Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
| 2 | /* |
| 3 | * Minix shell port for busybox |
| 4 | * |
| 5 | * This version of the Minix shell was adapted for use in busybox |
Eric Andersen | cb81e64 | 2003-07-14 21:21:08 +0000 | [diff] [blame] | 6 | * by Erik Andersen <andersen@codepoet.org> |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 7 | * |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 8 | * - backtick expansion did not work properly |
| 9 | * Jonas Holmberg <jonas.holmberg@axis.com> |
| 10 | * Robert Schwebel <r.schwebel@pengutronix.de> |
Eric Andersen | cb81e64 | 2003-07-14 21:21:08 +0000 | [diff] [blame] | 11 | * Erik Andersen <andersen@codepoet.org> |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 12 | * |
Rob Landley | c9c1a41 | 2006-07-12 19:17:55 +0000 | [diff] [blame] | 13 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 14 | */ |
| 15 | |
Bernhard Reutner-Fischer | e15d757 | 2006-06-02 20:56:16 +0000 | [diff] [blame] | 16 | #include "busybox.h" |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 17 | #include <setjmp.h> |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 18 | #include <sys/times.h> |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 19 | |
| 20 | #include "cmdedit.h" |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 21 | |
Mike Frysinger | 1781188 | 2006-05-05 20:33:07 +0000 | [diff] [blame] | 22 | /*#define MSHDEBUG 1*/ |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 23 | |
| 24 | #ifdef MSHDEBUG |
Mike Frysinger | 14ff19b | 2006-06-20 20:37:01 +0000 | [diff] [blame] | 25 | int mshdbg = MSHDEBUG; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 26 | |
| 27 | #define DBGPRINTF(x) if(mshdbg>0)printf x |
| 28 | #define DBGPRINTF0(x) if(mshdbg>0)printf x |
| 29 | #define DBGPRINTF1(x) if(mshdbg>1)printf x |
| 30 | #define DBGPRINTF2(x) if(mshdbg>2)printf x |
| 31 | #define DBGPRINTF3(x) if(mshdbg>3)printf x |
| 32 | #define DBGPRINTF4(x) if(mshdbg>4)printf x |
| 33 | #define DBGPRINTF5(x) if(mshdbg>5)printf x |
| 34 | #define DBGPRINTF6(x) if(mshdbg>6)printf x |
| 35 | #define DBGPRINTF7(x) if(mshdbg>7)printf x |
| 36 | #define DBGPRINTF8(x) if(mshdbg>8)printf x |
| 37 | #define DBGPRINTF9(x) if(mshdbg>9)printf x |
| 38 | |
| 39 | int mshdbg_rc = 0; |
| 40 | |
| 41 | #define RCPRINTF(x) if(mshdbg_rc)printf x |
| 42 | |
| 43 | #else |
| 44 | |
| 45 | #define DBGPRINTF(x) |
| 46 | #define DBGPRINTF0(x) |
| 47 | #define DBGPRINTF1(x) |
| 48 | #define DBGPRINTF2(x) |
| 49 | #define DBGPRINTF3(x) |
| 50 | #define DBGPRINTF4(x) |
| 51 | #define DBGPRINTF5(x) |
| 52 | #define DBGPRINTF6(x) |
| 53 | #define DBGPRINTF7(x) |
| 54 | #define DBGPRINTF8(x) |
| 55 | #define DBGPRINTF9(x) |
| 56 | |
| 57 | #define RCPRINTF(x) |
| 58 | |
| 59 | #endif /* MSHDEBUG */ |
| 60 | |
| 61 | |
Mike Frysinger | 2a13175 | 2006-06-06 06:26:12 +0000 | [diff] [blame] | 62 | #ifdef CONFIG_FEATURE_SH_FANCY_PROMPT |
| 63 | # define DEFAULT_ROOT_PROMPT "\\u:\\w> " |
| 64 | # define DEFAULT_USER_PROMPT "\\u:\\w$ " |
| 65 | #else |
| 66 | # define DEFAULT_ROOT_PROMPT "# " |
| 67 | # define DEFAULT_USER_PROMPT "$ " |
| 68 | #endif |
| 69 | |
| 70 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 71 | /* -------- sh.h -------- */ |
| 72 | /* |
| 73 | * shell |
| 74 | */ |
| 75 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 76 | #define LINELIM 2100 |
| 77 | #define NPUSH 8 /* limit to input nesting */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 78 | |
Eric Andersen | 392947c | 2002-12-11 07:42:46 +0000 | [diff] [blame] | 79 | #undef NOFILE |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 80 | #define NOFILE 20 /* Number of open files */ |
| 81 | #define NUFILE 10 /* Number of user-accessible files */ |
| 82 | #define FDBASE 10 /* First file usable by Shell */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 83 | |
| 84 | /* |
| 85 | * values returned by wait |
| 86 | */ |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 87 | #define WAITSIG(s) ((s)&0177) |
| 88 | #define WAITVAL(s) (((s)>>8)&0377) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 89 | #define WAITCORE(s) (((s)&0200)!=0) |
| 90 | |
| 91 | /* |
Eric Andersen | aff114c | 2004-04-14 17:51:38 +0000 | [diff] [blame] | 92 | * library and system definitions |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 93 | */ |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 94 | typedef void xint; /* base type of jmp_buf, for not broken compilers */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 95 | |
| 96 | /* |
| 97 | * shell components |
| 98 | */ |
| 99 | |
| 100 | #define QUOTE 0200 |
| 101 | |
| 102 | #define NOBLOCK ((struct op *)NULL) |
| 103 | #define NOWORD ((char *)NULL) |
| 104 | #define NOWORDS ((char **)NULL) |
| 105 | #define NOPIPE ((int *)NULL) |
| 106 | |
| 107 | /* |
| 108 | * Description of a command or an operation on commands. |
| 109 | * Might eventually use a union. |
| 110 | */ |
| 111 | struct op { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 112 | int type; /* operation type, see below */ |
| 113 | char **words; /* arguments to a command */ |
| 114 | struct ioword **ioact; /* IO actions (eg, < > >>) */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 115 | struct op *left; |
| 116 | struct op *right; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 117 | char *str; /* identifier for case and for */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 118 | }; |
| 119 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 120 | #define TCOM 1 /* command */ |
| 121 | #define TPAREN 2 /* (c-list) */ |
| 122 | #define TPIPE 3 /* a | b */ |
| 123 | #define TLIST 4 /* a [&;] b */ |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 124 | #define TOR 5 /* || */ |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 125 | #define TAND 6 /* && */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 126 | #define TFOR 7 |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 127 | #define TDO 8 |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 128 | #define TCASE 9 |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 129 | #define TIF 10 |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 130 | #define TWHILE 11 |
| 131 | #define TUNTIL 12 |
| 132 | #define TELIF 13 |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 133 | #define TPAT 14 /* pattern in case */ |
| 134 | #define TBRACE 15 /* {c-list} */ |
| 135 | #define TASYNC 16 /* c & */ |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 136 | /* Added to support "." file expansion */ |
| 137 | #define TDOT 17 |
| 138 | |
| 139 | /* Strings for names to make debug easier */ |
"Vladimir N. Oleynik" | ac97317 | 2005-09-22 14:38:17 +0000 | [diff] [blame] | 140 | #ifdef MSHDEBUG |
| 141 | static char *T_CMD_NAMES[] = { |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 142 | "PLACEHOLDER", |
| 143 | "TCOM", |
| 144 | "TPAREN", |
| 145 | "TPIPE", |
| 146 | "TLIST", |
| 147 | "TOR", |
| 148 | "TAND", |
| 149 | "TFOR", |
| 150 | "TDO", |
| 151 | "TCASE", |
| 152 | "TIF", |
| 153 | "TWHILE", |
| 154 | "TUNTIL", |
| 155 | "TELIF", |
| 156 | "TPAT", |
| 157 | "TBRACE", |
| 158 | "TASYNC", |
| 159 | "TDOT", |
| 160 | }; |
"Vladimir N. Oleynik" | ac97317 | 2005-09-22 14:38:17 +0000 | [diff] [blame] | 161 | #endif |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 162 | |
| 163 | /* |
| 164 | * actions determining the environment of a process |
| 165 | */ |
| 166 | #define BIT(i) (1<<(i)) |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 167 | #define FEXEC BIT(0) /* execute without forking */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 168 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 169 | #define AREASIZE (90000) |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 170 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 171 | /* |
| 172 | * flags to control evaluation of words |
| 173 | */ |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 174 | #define DOSUB 1 /* interpret $, `, and quotes */ |
| 175 | #define DOBLANK 2 /* perform blank interpretation */ |
| 176 | #define DOGLOB 4 /* interpret [?* */ |
| 177 | #define DOKEY 8 /* move words with `=' to 2nd arg. list */ |
| 178 | #define DOTRIM 16 /* trim resulting string */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 179 | |
| 180 | #define DOALL (DOSUB|DOBLANK|DOGLOB|DOKEY|DOTRIM) |
| 181 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 182 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 183 | /* PROTOTYPES */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 184 | static int newfile(char *s); |
| 185 | static char *findeq(char *cp); |
| 186 | static char *cclass(char *p, int sub); |
| 187 | static void initarea(void); |
Matt Kraai | 2d91deb | 2001-08-01 17:21:35 +0000 | [diff] [blame] | 188 | extern int msh_main(int argc, char **argv); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 189 | |
| 190 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 191 | struct brkcon { |
| 192 | jmp_buf brkpt; |
| 193 | struct brkcon *nextlev; |
| 194 | }; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 195 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 196 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 197 | /* |
| 198 | * redirection |
| 199 | */ |
| 200 | struct ioword { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 201 | short io_unit; /* unit affected */ |
| 202 | short io_flag; /* action (below) */ |
| 203 | char *io_name; /* file name */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 204 | }; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 205 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 206 | #define IOREAD 1 /* < */ |
| 207 | #define IOHERE 2 /* << (here file) */ |
| 208 | #define IOWRITE 4 /* > */ |
| 209 | #define IOCAT 8 /* >> */ |
| 210 | #define IOXHERE 16 /* ${}, ` in << */ |
| 211 | #define IODUP 32 /* >&digit */ |
| 212 | #define IOCLOSE 64 /* >&- */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 213 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 214 | #define IODEFAULT (-1) /* token for default IO unit */ |
| 215 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 216 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 217 | |
| 218 | /* |
| 219 | * parsing & execution environment |
| 220 | */ |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 221 | static struct env { |
| 222 | char *linep; |
| 223 | struct io *iobase; |
| 224 | struct io *iop; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 225 | xint *errpt; /* void * */ |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 226 | int iofd; |
| 227 | struct env *oenv; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 228 | } e; |
| 229 | |
| 230 | /* |
| 231 | * flags: |
| 232 | * -e: quit on error |
| 233 | * -k: look for name=value everywhere on command line |
| 234 | * -n: no execution |
| 235 | * -t: exit after reading and executing one command |
| 236 | * -v: echo as read |
| 237 | * -x: trace |
| 238 | * -u: unset variables net diagnostic |
| 239 | */ |
Mike Frysinger | 3672fe9 | 2006-11-15 21:52:10 +0000 | [diff] [blame] | 240 | static char flags['z' - 'a' + 1]; |
| 241 | /* this looks weird, but is OK ... we index flag with 'a'...'z' */ |
| 242 | static char *flag = flags - 'a'; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 243 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 244 | static char *null; /* null value for variable */ |
| 245 | static int intr; /* interrupt pending */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 246 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 247 | static char *trap[_NSIG + 1]; |
| 248 | static char ourtrap[_NSIG + 1]; |
| 249 | static int trapset; /* trap pending */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 250 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 251 | static int heedint; /* heed interrupt signals */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 252 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 253 | static int yynerrs; /* yacc */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 254 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 255 | static char line[LINELIM]; |
| 256 | static char *elinep; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 257 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 258 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 259 | /* |
| 260 | * other functions |
| 261 | */ |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 262 | static int (*inbuilt(char *s)) (struct op *); |
Eric Andersen | 392947c | 2002-12-11 07:42:46 +0000 | [diff] [blame] | 263 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 264 | static char *rexecve(char *c, char **v, char **envp); |
| 265 | static char *space(int n); |
| 266 | static char *strsave(char *s, int a); |
| 267 | static char *evalstr(char *cp, int f); |
| 268 | static char *putn(int n); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 269 | static char *unquote(char *as); |
| 270 | static struct var *lookup(char *n); |
| 271 | static int rlookup(char *n); |
| 272 | static struct wdblock *glob(char *cp, struct wdblock *wb); |
| 273 | static int my_getc(int ec); |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 274 | static int subgetc(char ec, int quoted); |
Eric Andersen | fd7a4c8 | 2004-09-02 23:13:10 +0000 | [diff] [blame] | 275 | static char **makenv(int all, struct wdblock *wb); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 276 | static char **eval(char **ap, int f); |
| 277 | static int setstatus(int s); |
| 278 | static int waitfor(int lastpid, int canintr); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 279 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 280 | static void onintr(int s); /* SIGINT handler */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 281 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 282 | static int newenv(int f); |
| 283 | static void quitenv(void); |
| 284 | static void err(char *s); |
| 285 | static int anys(char *s1, char *s2); |
| 286 | static int any(int c, char *s); |
| 287 | static void next(int f); |
| 288 | static void setdash(void); |
| 289 | static void onecommand(void); |
| 290 | static void runtrap(int i); |
| 291 | static int gmatch(char *s, char *p); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 292 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 293 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 294 | /* |
| 295 | * error handling |
| 296 | */ |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 297 | static void leave(void); /* abort shell (or fail in subshell) */ |
| 298 | static void fail(void); /* fail but return to process next command */ |
| 299 | static void warn(char *s); |
| 300 | static void sig(int i); /* default signal handler */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 301 | |
| 302 | |
| 303 | |
| 304 | /* -------- area stuff -------- */ |
| 305 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 306 | #define REGSIZE sizeof(struct region) |
| 307 | #define GROWBY (256) |
| 308 | /* #define SHRINKBY (64) */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 309 | #undef SHRINKBY |
Tim Riker | c1ef7bd | 2006-01-25 00:08:53 +0000 | [diff] [blame] | 310 | #define FREE (32767) |
| 311 | #define BUSY (0) |
| 312 | #define ALIGN (sizeof(int)-1) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 313 | |
| 314 | |
| 315 | struct region { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 316 | struct region *next; |
| 317 | int area; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 318 | }; |
| 319 | |
| 320 | |
| 321 | |
| 322 | /* -------- grammar stuff -------- */ |
| 323 | typedef union { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 324 | char *cp; |
| 325 | char **wp; |
| 326 | int i; |
| 327 | struct op *o; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 328 | } YYSTYPE; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 329 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 330 | #define WORD 256 |
| 331 | #define LOGAND 257 |
| 332 | #define LOGOR 258 |
| 333 | #define BREAK 259 |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 334 | #define IF 260 |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 335 | #define THEN 261 |
| 336 | #define ELSE 262 |
| 337 | #define ELIF 263 |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 338 | #define FI 264 |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 339 | #define CASE 265 |
| 340 | #define ESAC 266 |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 341 | #define FOR 267 |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 342 | #define WHILE 268 |
| 343 | #define UNTIL 269 |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 344 | #define DO 270 |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 345 | #define DONE 271 |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 346 | #define IN 272 |
| 347 | /* Added for "." file expansion */ |
| 348 | #define DOT 273 |
| 349 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 350 | #define YYERRCODE 300 |
| 351 | |
| 352 | /* flags to yylex */ |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 353 | #define CONTIN 01 /* skip new lines to complete command */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 354 | |
| 355 | #define SYNTAXERR zzerr() |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 356 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 357 | static struct op *pipeline(int cf); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 358 | static struct op *andor(void); |
| 359 | static struct op *c_list(void); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 360 | static int synio(int cf); |
| 361 | static void musthave(int c, int cf); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 362 | static struct op *simple(void); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 363 | static struct op *nested(int type, int mark); |
| 364 | static struct op *command(int cf); |
| 365 | static struct op *dogroup(int onlydone); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 366 | static struct op *thenpart(void); |
| 367 | static struct op *elsepart(void); |
| 368 | static struct op *caselist(void); |
| 369 | static struct op *casepart(void); |
| 370 | static char **pattern(void); |
| 371 | static char **wordlist(void); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 372 | static struct op *list(struct op *t1, struct op *t2); |
| 373 | static struct op *block(int type, struct op *t1, struct op *t2, char **wp); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 374 | static struct op *newtp(void); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 375 | static struct op *namelist(struct op *t); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 376 | static char **copyw(void); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 377 | static void word(char *cp); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 378 | static struct ioword **copyio(void); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 379 | static struct ioword *io(int u, int f, char *cp); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 380 | static void zzerr(void); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 381 | static void yyerror(char *s); |
| 382 | static int yylex(int cf); |
| 383 | static int collect(int c, int c1); |
| 384 | static int dual(int c); |
| 385 | static void diag(int ec); |
| 386 | static char *tree(unsigned size); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 387 | |
| 388 | /* -------- var.h -------- */ |
| 389 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 390 | struct var { |
| 391 | char *value; |
| 392 | char *name; |
| 393 | struct var *next; |
| 394 | char status; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 395 | }; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 396 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 397 | #define COPYV 1 /* flag to setval, suggesting copy */ |
| 398 | #define RONLY 01 /* variable is read-only */ |
| 399 | #define EXPORT 02 /* variable is to be exported */ |
| 400 | #define GETCELL 04 /* name & value space was got with getcell */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 401 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 402 | static int yyparse(void); |
| 403 | static struct var *lookup(char *n); |
| 404 | static void setval(struct var *vp, char *val); |
| 405 | static void nameval(struct var *vp, char *val, char *name); |
| 406 | static void export(struct var *vp); |
| 407 | static void ronly(struct var *vp); |
| 408 | static int isassign(char *s); |
| 409 | static int checkname(char *cp); |
| 410 | static int assign(char *s, int cf); |
| 411 | static void putvlist(int f, int out); |
| 412 | static int eqname(char *n1, char *n2); |
| 413 | |
| 414 | static int execute(struct op *t, int *pin, int *pout, int act); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 415 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 416 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 417 | /* -------- io.h -------- */ |
| 418 | /* io buffer */ |
| 419 | struct iobuf { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 420 | unsigned id; /* buffer id */ |
| 421 | char buf[512]; /* buffer */ |
| 422 | char *bufp; /* pointer into buffer */ |
| 423 | char *ebufp; /* pointer to end of buffer */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 424 | }; |
| 425 | |
| 426 | /* possible arguments to an IO function */ |
| 427 | struct ioarg { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 428 | char *aword; |
| 429 | char **awordlist; |
| 430 | int afile; /* file descriptor */ |
| 431 | unsigned afid; /* buffer id */ |
| 432 | long afpos; /* file position */ |
| 433 | struct iobuf *afbuf; /* buffer for this file */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 434 | }; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 435 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 436 | //static struct ioarg ioargstack[NPUSH]; |
| 437 | #define AFID_NOBUF (~0) |
| 438 | #define AFID_ID 0 |
| 439 | |
| 440 | /* an input generator's state */ |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 441 | struct io { |
| 442 | int (*iofn) (struct ioarg *, struct io *); |
| 443 | struct ioarg *argp; |
| 444 | int peekc; |
| 445 | char prev; /* previous character read by readc() */ |
| 446 | char nlcount; /* for `'s */ |
| 447 | char xchar; /* for `'s */ |
| 448 | char task; /* reason for pushed IO */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 449 | }; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 450 | |
| 451 | //static struct io iostack[NPUSH]; |
| 452 | #define XOTHER 0 /* none of the below */ |
| 453 | #define XDOLL 1 /* expanding ${} */ |
| 454 | #define XGRAVE 2 /* expanding `'s */ |
| 455 | #define XIO 3 /* file IO */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 456 | |
| 457 | /* in substitution */ |
| 458 | #define INSUB() (e.iop->task == XGRAVE || e.iop->task == XDOLL) |
| 459 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 460 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 461 | /* |
| 462 | * input generators for IO structure |
| 463 | */ |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 464 | static int nlchar(struct ioarg *ap); |
| 465 | static int strchar(struct ioarg *ap); |
| 466 | static int qstrchar(struct ioarg *ap); |
| 467 | static int filechar(struct ioarg *ap); |
| 468 | static int herechar(struct ioarg *ap); |
| 469 | static int linechar(struct ioarg *ap); |
| 470 | static int gravechar(struct ioarg *ap, struct io *iop); |
| 471 | static int qgravechar(struct ioarg *ap, struct io *iop); |
| 472 | static int dolchar(struct ioarg *ap); |
| 473 | static int wdchar(struct ioarg *ap); |
| 474 | static void scraphere(void); |
| 475 | static void freehere(int area); |
| 476 | static void gethere(void); |
| 477 | static void markhere(char *s, struct ioword *iop); |
| 478 | static int herein(char *hname, int xdoll); |
| 479 | static int run(struct ioarg *argp, int (*f) (struct ioarg *)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 480 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 481 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 482 | /* |
| 483 | * IO functions |
| 484 | */ |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 485 | static int eofc(void); |
| 486 | static int readc(void); |
| 487 | static void unget(int c); |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 488 | static void ioecho(char c); |
"Vladimir N. Oleynik" | 485d7cb | 2005-10-17 09:48:57 +0000 | [diff] [blame] | 489 | static void prs(const char *s); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 490 | static void prn(unsigned u); |
| 491 | static void closef(int i); |
| 492 | static void closeall(void); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 493 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 494 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 495 | /* |
| 496 | * IO control |
| 497 | */ |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 498 | static void pushio(struct ioarg *argp, int (*f) (struct ioarg *)); |
| 499 | static int remap(int fd); |
| 500 | static int openpipe(int *pv); |
| 501 | static void closepipe(int *pv); |
| 502 | static struct io *setbase(struct io *ip); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 503 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 504 | #define PUSHIO(what,arg,gen) ((temparg.what = (arg)),pushio(&temparg,(gen))) |
| 505 | #define RUN(what,arg,gen) ((temparg.what = (arg)), run(&temparg,(gen))) |
| 506 | |
| 507 | /* -------- word.h -------- */ |
| 508 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 509 | #define NSTART 16 /* default number of words to allow for initially */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 510 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 511 | struct wdblock { |
| 512 | short w_bsize; |
| 513 | short w_nword; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 514 | /* bounds are arbitrary */ |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 515 | char *w_words[1]; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 516 | }; |
| 517 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 518 | static struct wdblock *addword(char *wd, struct wdblock *wb); |
| 519 | static struct wdblock *newword(int nw); |
| 520 | static char **getwords(struct wdblock *wb); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 521 | |
| 522 | /* -------- area.h -------- */ |
| 523 | |
| 524 | /* |
| 525 | * storage allocation |
| 526 | */ |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 527 | static char *getcell(unsigned nbytes); |
| 528 | static void garbage(void); |
| 529 | static void setarea(char *cp, int a); |
| 530 | static int getarea(char *cp); |
| 531 | static void freearea(int a); |
| 532 | static void freecell(char *cp); |
| 533 | static int areanum; /* current allocation area */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 534 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 535 | #define NEW(type) (type *)getcell(sizeof(type)) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 536 | #define DELETE(obj) freecell((char *)obj) |
| 537 | |
| 538 | |
| 539 | /* -------- misc stuff -------- */ |
| 540 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 541 | static int forkexec(struct op *t, int *pin, int *pout, int act, char **wp); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 542 | static int iosetup(struct ioword *iop, int pipein, int pipeout); |
| 543 | static void echo(char **wp); |
| 544 | static struct op **find1case(struct op *t, char *w); |
| 545 | static struct op *findcase(struct op *t, char *w); |
| 546 | static void brkset(struct brkcon *bc); |
| 547 | static int dolabel(struct op *t); |
| 548 | static int dohelp(struct op *t); |
| 549 | static int dochdir(struct op *t); |
| 550 | static int doshift(struct op *t); |
| 551 | static int dologin(struct op *t); |
| 552 | static int doumask(struct op *t); |
| 553 | static int doexec(struct op *t); |
| 554 | static int dodot(struct op *t); |
| 555 | static int dowait(struct op *t); |
| 556 | static int doread(struct op *t); |
| 557 | static int doeval(struct op *t); |
| 558 | static int dotrap(struct op *t); |
| 559 | static int getsig(char *s); |
| 560 | static void setsig(int n, sighandler_t f); |
| 561 | static int getn(char *as); |
| 562 | static int dobreak(struct op *t); |
| 563 | static int docontinue(struct op *t); |
| 564 | static int brkcontin(char *cp, int val); |
| 565 | static int doexit(struct op *t); |
| 566 | static int doexport(struct op *t); |
| 567 | static int doreadonly(struct op *t); |
| 568 | static void rdexp(char **wp, void (*f) (struct var *), int key); |
| 569 | static void badid(char *s); |
| 570 | static int doset(struct op *t); |
| 571 | static void varput(char *s, int out); |
| 572 | static int dotimes(struct op *t); |
| 573 | static int expand(char *cp, struct wdblock **wbp, int f); |
| 574 | static char *blank(int f); |
| 575 | static int dollar(int quoted); |
| 576 | static int grave(int quoted); |
| 577 | static void globname(char *we, char *pp); |
| 578 | static char *generate(char *start1, char *end1, char *middle, char *end); |
| 579 | static int anyspcl(struct wdblock *wb); |
| 580 | static int xstrcmp(char *p1, char *p2); |
| 581 | static void glob0(char *a0, unsigned int a1, int a2, |
| 582 | int (*a3) (char *, char *)); |
| 583 | static void glob1(char *base, char *lim); |
| 584 | static void glob2(char *i, char *j); |
| 585 | static void glob3(char *i, char *j, char *k); |
| 586 | static void readhere(char **name, char *s, int ec); |
| 587 | static void pushio(struct ioarg *argp, int (*f) (struct ioarg *)); |
| 588 | static int xxchar(struct ioarg *ap); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 589 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 590 | struct here { |
| 591 | char *h_tag; |
| 592 | int h_dosub; |
| 593 | struct ioword *h_iop; |
| 594 | struct here *h_next; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 595 | }; |
| 596 | |
"Vladimir N. Oleynik" | 485d7cb | 2005-10-17 09:48:57 +0000 | [diff] [blame] | 597 | static const char * const signame[] = { |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 598 | "Signal 0", |
| 599 | "Hangup", |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 600 | (char *) NULL, /* interrupt */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 601 | "Quit", |
| 602 | "Illegal instruction", |
| 603 | "Trace/BPT trap", |
| 604 | "Abort", |
| 605 | "Bus error", |
| 606 | "Floating Point Exception", |
| 607 | "Killed", |
| 608 | "SIGUSR1", |
| 609 | "SIGSEGV", |
| 610 | "SIGUSR2", |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 611 | (char *) NULL, /* broken pipe */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 612 | "Alarm clock", |
| 613 | "Terminated", |
| 614 | }; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 615 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 616 | #define NSIGNAL (sizeof(signame)/sizeof(signame[0])) |
| 617 | |
| 618 | struct res { |
"Vladimir N. Oleynik" | 485d7cb | 2005-10-17 09:48:57 +0000 | [diff] [blame] | 619 | const char *r_name; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 620 | int r_val; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 621 | }; |
"Vladimir N. Oleynik" | 485d7cb | 2005-10-17 09:48:57 +0000 | [diff] [blame] | 622 | static const struct res restab[] = { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 623 | {"for", FOR}, |
| 624 | {"case", CASE}, |
| 625 | {"esac", ESAC}, |
| 626 | {"while", WHILE}, |
| 627 | {"do", DO}, |
| 628 | {"done", DONE}, |
| 629 | {"if", IF}, |
| 630 | {"in", IN}, |
| 631 | {"then", THEN}, |
| 632 | {"else", ELSE}, |
| 633 | {"elif", ELIF}, |
| 634 | {"until", UNTIL}, |
| 635 | {"fi", FI}, |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 636 | {";;", BREAK}, |
| 637 | {"||", LOGOR}, |
| 638 | {"&&", LOGAND}, |
| 639 | {"{", '{'}, |
| 640 | {"}", '}'}, |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 641 | {".", DOT}, |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 642 | {0, 0}, |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 643 | }; |
| 644 | |
| 645 | |
Eric Andersen | 1c03923 | 2001-07-07 00:05:55 +0000 | [diff] [blame] | 646 | struct builtincmd { |
| 647 | const char *name; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 648 | int (*builtinfunc) (struct op * t); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 649 | }; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 650 | static const struct builtincmd builtincmds[] = { |
| 651 | {".", dodot}, |
| 652 | {":", dolabel}, |
| 653 | {"break", dobreak}, |
| 654 | {"cd", dochdir}, |
| 655 | {"continue", docontinue}, |
| 656 | {"eval", doeval}, |
| 657 | {"exec", doexec}, |
| 658 | {"exit", doexit}, |
| 659 | {"export", doexport}, |
| 660 | {"help", dohelp}, |
| 661 | {"login", dologin}, |
| 662 | {"newgrp", dologin}, |
| 663 | {"read", doread}, |
| 664 | {"readonly", doreadonly}, |
| 665 | {"set", doset}, |
| 666 | {"shift", doshift}, |
| 667 | {"times", dotimes}, |
| 668 | {"trap", dotrap}, |
| 669 | {"umask", doumask}, |
| 670 | {"wait", dowait}, |
| 671 | {0, 0} |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 672 | }; |
| 673 | |
"Vladimir N. Oleynik" | ac97317 | 2005-09-22 14:38:17 +0000 | [diff] [blame] | 674 | static struct op *scantree(struct op *); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 675 | static struct op *dowholefile(int, int); |
| 676 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 677 | /* Globals */ |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 678 | extern char **environ; /* environment pointer */ |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 679 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 680 | static char **dolv; |
| 681 | static int dolc; |
| 682 | static int exstat; |
| 683 | static char gflg; |
"Vladimir N. Oleynik" | 485d7cb | 2005-10-17 09:48:57 +0000 | [diff] [blame] | 684 | static int interactive; /* Is this an interactive shell */ |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 685 | static int execflg; |
| 686 | static int multiline; /* \n changed to ; */ |
| 687 | static struct op *outtree; /* result from parser */ |
| 688 | static xint *failpt; |
| 689 | static xint *errpt; |
| 690 | static struct brkcon *brklist; |
| 691 | static int isbreak; |
| 692 | static struct wdblock *wdlist; |
| 693 | static struct wdblock *iolist; |
| 694 | static char *trap[_NSIG + 1]; |
| 695 | static char ourtrap[_NSIG + 1]; |
| 696 | static int trapset; /* trap pending */ |
| 697 | static int yynerrs; /* yacc */ |
| 698 | static char line[LINELIM]; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 699 | |
| 700 | #ifdef MSHDEBUG |
| 701 | static struct var *mshdbg_var; |
| 702 | #endif |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 703 | static struct var *vlist; /* dictionary */ |
| 704 | static struct var *homedir; /* home directory */ |
| 705 | static struct var *prompt; /* main prompt */ |
| 706 | static struct var *cprompt; /* continuation prompt */ |
| 707 | static struct var *path; /* search path for commands */ |
| 708 | static struct var *shell; /* shell to interpret command files */ |
| 709 | static struct var *ifs; /* field separators */ |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 710 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 711 | static int areanum; /* current allocation area */ |
| 712 | static int intr; |
| 713 | static int inparse; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 714 | static char *null = ""; |
| 715 | static int heedint = 1; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 716 | static void (*qflag) (int) = SIG_IGN; |
| 717 | static int startl; |
| 718 | static int peeksym; |
| 719 | static int nlseen; |
| 720 | static int iounit = IODEFAULT; |
| 721 | static YYSTYPE yylval; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 722 | static char *elinep = line + sizeof(line) - 5; |
| 723 | |
| 724 | static struct ioarg temparg = { 0, 0, 0, AFID_NOBUF, 0 }; /* temporary for PUSHIO */ |
| 725 | static struct ioarg ioargstack[NPUSH]; |
| 726 | static struct io iostack[NPUSH]; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 727 | static struct iobuf sharedbuf = { AFID_NOBUF }; |
| 728 | static struct iobuf mainbuf = { AFID_NOBUF }; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 729 | static unsigned bufid = AFID_ID; /* buffer id counter */ |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 730 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 731 | static struct here *inhere; /* list of hear docs while parsing */ |
| 732 | static struct here *acthere; /* list of active here documents */ |
| 733 | static struct region *areabot; /* bottom of area */ |
| 734 | static struct region *areatop; /* top of area */ |
| 735 | static struct region *areanxt; /* starting point of scan */ |
| 736 | static void *brktop; |
| 737 | static void *brkaddr; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 738 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 739 | static struct env e = { |
| 740 | line, /* linep: char ptr */ |
| 741 | iostack, /* iobase: struct io ptr */ |
| 742 | iostack - 1, /* iop: struct io ptr */ |
| 743 | (xint *) NULL, /* errpt: void ptr for errors? */ |
| 744 | FDBASE, /* iofd: file desc */ |
| 745 | (struct env *) NULL /* oenv: struct env ptr */ |
| 746 | }; |
| 747 | |
| 748 | #ifdef MSHDEBUG |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 749 | void print_t(struct op *t); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 750 | void print_t(struct op *t) |
| 751 | { |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 752 | DBGPRINTF(("T: t=%p, type %s, words=%p, IOword=%p\n", t, |
| 753 | T_CMD_NAMES[t->type], t->words, t->ioact)); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 754 | |
| 755 | if (t->words) { |
| 756 | DBGPRINTF(("T: W1: %s", t->words[0])); |
| 757 | } |
| 758 | |
| 759 | return; |
| 760 | } |
| 761 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 762 | void print_tree(struct op *head); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 763 | void print_tree(struct op *head) |
| 764 | { |
| 765 | if (head == NULL) { |
| 766 | DBGPRINTF(("PRINT_TREE: no tree\n")); |
| 767 | return; |
| 768 | } |
| 769 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 770 | DBGPRINTF(("NODE: %p, left %p, right %p\n", head, head->left, |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 771 | head->right)); |
| 772 | |
| 773 | if (head->left) |
| 774 | print_tree(head->left); |
| 775 | |
| 776 | if (head->right) |
| 777 | print_tree(head->right); |
| 778 | |
| 779 | return; |
| 780 | } |
| 781 | #endif /* MSHDEBUG */ |
| 782 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 783 | |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 784 | #ifdef CONFIG_FEATURE_COMMAND_EDITING |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 785 | static char *current_prompt; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 786 | #endif |
| 787 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 788 | /* -------- sh.c -------- */ |
| 789 | /* |
| 790 | * shell |
| 791 | */ |
| 792 | |
| 793 | |
Rob Landley | dfba741 | 2006-03-06 20:47:33 +0000 | [diff] [blame] | 794 | int msh_main(int argc, char **argv) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 795 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 796 | int f; |
| 797 | char *s; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 798 | int cflag; |
| 799 | char *name, **ap; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 800 | int (*iof) (struct ioarg *); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 801 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 802 | DBGPRINTF(("MSH_MAIN: argc %d, environ %p\n", argc, environ)); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 803 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 804 | initarea(); |
| 805 | if ((ap = environ) != NULL) { |
| 806 | while (*ap) |
| 807 | assign(*ap++, !COPYV); |
| 808 | for (ap = environ; *ap;) |
| 809 | export(lookup(*ap++)); |
| 810 | } |
| 811 | closeall(); |
| 812 | areanum = 1; |
| 813 | |
| 814 | shell = lookup("SHELL"); |
| 815 | if (shell->value == null) |
Eric Andersen | 7850014 | 2004-08-27 19:55:28 +0000 | [diff] [blame] | 816 | setval(shell, (char *)DEFAULT_SHELL); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 817 | export(shell); |
| 818 | |
| 819 | homedir = lookup("HOME"); |
| 820 | if (homedir->value == null) |
| 821 | setval(homedir, "/"); |
| 822 | export(homedir); |
| 823 | |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 824 | setval(lookup("$"), putn(getpid())); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 825 | |
| 826 | path = lookup("PATH"); |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 827 | if (path->value == null) { |
| 828 | if (geteuid() == 0) |
| 829 | setval(path, "/sbin:/bin:/usr/sbin:/usr/bin"); |
| 830 | else |
| 831 | setval(path, "/bin:/usr/bin"); |
| 832 | } |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 833 | export(path); |
| 834 | |
| 835 | ifs = lookup("IFS"); |
| 836 | if (ifs->value == null) |
| 837 | setval(ifs, " \t\n"); |
| 838 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 839 | #ifdef MSHDEBUG |
| 840 | mshdbg_var = lookup("MSHDEBUG"); |
| 841 | if (mshdbg_var->value == null) |
| 842 | setval(mshdbg_var, "0"); |
| 843 | #endif |
| 844 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 845 | prompt = lookup("PS1"); |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 846 | #ifdef CONFIG_FEATURE_SH_FANCY_PROMPT |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 847 | if (prompt->value == null) |
Eric Andersen | 1c03923 | 2001-07-07 00:05:55 +0000 | [diff] [blame] | 848 | #endif |
Mike Frysinger | 2a13175 | 2006-06-06 06:26:12 +0000 | [diff] [blame] | 849 | setval(prompt, DEFAULT_USER_PROMPT); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 850 | if (geteuid() == 0) { |
Mike Frysinger | 2a13175 | 2006-06-06 06:26:12 +0000 | [diff] [blame] | 851 | setval(prompt, DEFAULT_ROOT_PROMPT); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 852 | prompt->status &= ~EXPORT; |
| 853 | } |
| 854 | cprompt = lookup("PS2"); |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 855 | #ifdef CONFIG_FEATURE_SH_FANCY_PROMPT |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 856 | if (cprompt->value == null) |
Eric Andersen | 1c03923 | 2001-07-07 00:05:55 +0000 | [diff] [blame] | 857 | #endif |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 858 | setval(cprompt, "> "); |
| 859 | |
| 860 | iof = filechar; |
| 861 | cflag = 0; |
| 862 | name = *argv++; |
| 863 | if (--argc >= 1) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 864 | if (argv[0][0] == '-' && argv[0][1] != '\0') { |
| 865 | for (s = argv[0] + 1; *s; s++) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 866 | switch (*s) { |
| 867 | case 'c': |
| 868 | prompt->status &= ~EXPORT; |
| 869 | cprompt->status &= ~EXPORT; |
| 870 | setval(prompt, ""); |
| 871 | setval(cprompt, ""); |
| 872 | cflag = 1; |
| 873 | if (--argc > 0) |
| 874 | PUSHIO(aword, *++argv, iof = nlchar); |
| 875 | break; |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 876 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 877 | case 'q': |
| 878 | qflag = SIG_DFL; |
| 879 | break; |
| 880 | |
| 881 | case 's': |
| 882 | /* standard input */ |
| 883 | break; |
| 884 | |
| 885 | case 't': |
| 886 | prompt->status &= ~EXPORT; |
| 887 | setval(prompt, ""); |
| 888 | iof = linechar; |
| 889 | break; |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 890 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 891 | case 'i': |
| 892 | interactive++; |
| 893 | default: |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 894 | if (*s >= 'a' && *s <= 'z') |
| 895 | flag[(int) *s]++; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 896 | } |
| 897 | } else { |
| 898 | argv--; |
| 899 | argc++; |
| 900 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 901 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 902 | if (iof == filechar && --argc > 0) { |
| 903 | setval(prompt, ""); |
| 904 | setval(cprompt, ""); |
| 905 | prompt->status &= ~EXPORT; |
| 906 | cprompt->status &= ~EXPORT; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 907 | |
| 908 | /* Shell is non-interactive, activate printf-based debug */ |
| 909 | #ifdef MSHDEBUG |
| 910 | mshdbg = (int) (((char) (mshdbg_var->value[0])) - '0'); |
| 911 | if (mshdbg < 0) |
| 912 | mshdbg = 0; |
| 913 | #endif |
| 914 | DBGPRINTF(("MSH_MAIN: calling newfile()\n")); |
| 915 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 916 | if (newfile(name = *++argv)) |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 917 | exit(1); /* Exit on error */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 918 | } |
| 919 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 920 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 921 | setdash(); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 922 | |
| 923 | /* This won't be true if PUSHIO has been called, say from newfile() above */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 924 | if (e.iop < iostack) { |
| 925 | PUSHIO(afile, 0, iof); |
Eric Andersen | 1c03923 | 2001-07-07 00:05:55 +0000 | [diff] [blame] | 926 | if (isatty(0) && isatty(1) && !cflag) { |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 927 | interactive++; |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 928 | #ifndef CONFIG_FEATURE_SH_EXTRA_QUIET |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 929 | #ifdef MSHDEBUG |
"Vladimir N. Oleynik" | dd1ccdd | 2006-02-16 15:40:24 +0000 | [diff] [blame] | 930 | printf("\n\n%s Built-in shell (msh with debug)\n", BB_BANNER); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 931 | #else |
"Vladimir N. Oleynik" | dd1ccdd | 2006-02-16 15:40:24 +0000 | [diff] [blame] | 932 | printf("\n\n%s Built-in shell (msh)\n", BB_BANNER); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 933 | #endif |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 934 | printf("Enter 'help' for a list of built-in commands.\n\n"); |
Eric Andersen | d63dee4 | 2001-10-19 00:22:23 +0000 | [diff] [blame] | 935 | #endif |
Eric Andersen | 1c03923 | 2001-07-07 00:05:55 +0000 | [diff] [blame] | 936 | } |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 937 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 938 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 939 | signal(SIGQUIT, qflag); |
| 940 | if (name && name[0] == '-') { |
| 941 | interactive++; |
| 942 | if ((f = open(".profile", 0)) >= 0) |
| 943 | next(remap(f)); |
| 944 | if ((f = open("/etc/profile", 0)) >= 0) |
| 945 | next(remap(f)); |
| 946 | } |
| 947 | if (interactive) |
| 948 | signal(SIGTERM, sig); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 949 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 950 | if (signal(SIGINT, SIG_IGN) != SIG_IGN) |
| 951 | signal(SIGINT, onintr); |
| 952 | dolv = argv; |
| 953 | dolc = argc; |
| 954 | dolv[0] = name; |
| 955 | if (dolc > 1) { |
| 956 | for (ap = ++argv; --argc > 0;) { |
| 957 | if (assign(*ap = *argv++, !COPYV)) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 958 | dolc--; /* keyword */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 959 | } else { |
| 960 | ap++; |
| 961 | } |
| 962 | } |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 963 | } |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 964 | setval(lookup("#"), putn((--dolc < 0) ? (dolc = 0) : dolc)); |
| 965 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 966 | DBGPRINTF(("MSH_MAIN: begin FOR loop, interactive %d, e.iop %p, iostack %p\n", interactive, e.iop, iostack)); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 967 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 968 | for (;;) { |
| 969 | if (interactive && e.iop <= iostack) { |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 970 | #ifdef CONFIG_FEATURE_COMMAND_EDITING |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 971 | current_prompt = prompt->value; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 972 | #else |
| 973 | prs(prompt->value); |
| 974 | #endif |
| 975 | } |
| 976 | onecommand(); |
Eric Andersen | 1c31501 | 2002-04-26 23:40:09 +0000 | [diff] [blame] | 977 | /* Ensure that getenv("PATH") stays current */ |
| 978 | setenv("PATH", path->value, 1); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 979 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 980 | |
| 981 | DBGPRINTF(("MSH_MAIN: returning.\n")); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 982 | } |
| 983 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 984 | static void setdash(void) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 985 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 986 | char *cp; |
| 987 | int c; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 988 | char m['z' - 'a' + 1]; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 989 | |
| 990 | cp = m; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 991 | for (c = 'a'; c <= 'z'; c++) |
| 992 | if (flag[(int) c]) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 993 | *cp++ = c; |
| 994 | *cp = 0; |
| 995 | setval(lookup("-"), m); |
| 996 | } |
| 997 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 998 | static int newfile(char *s) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 999 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1000 | int f; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1001 | |
| 1002 | DBGPRINTF7(("NEWFILE: opening %s\n", s)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1003 | |
| 1004 | if (strcmp(s, "-") != 0) { |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1005 | DBGPRINTF(("NEWFILE: s is %s\n", s)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1006 | f = open(s, 0); |
| 1007 | if (f < 0) { |
| 1008 | prs(s); |
| 1009 | err(": cannot open"); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 1010 | return 1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1011 | } |
| 1012 | } else |
| 1013 | f = 0; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1014 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1015 | next(remap(f)); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 1016 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1017 | } |
| 1018 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1019 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1020 | struct op *scantree(struct op *head) |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1021 | { |
| 1022 | struct op *dotnode; |
| 1023 | |
| 1024 | if (head == NULL) |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1025 | return NULL; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1026 | |
| 1027 | if (head->left != NULL) { |
| 1028 | dotnode = scantree(head->left); |
| 1029 | if (dotnode) |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1030 | return dotnode; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1031 | } |
| 1032 | |
| 1033 | if (head->right != NULL) { |
| 1034 | dotnode = scantree(head->right); |
| 1035 | if (dotnode) |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1036 | return dotnode; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1037 | } |
| 1038 | |
| 1039 | if (head->words == NULL) |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1040 | return NULL; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1041 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 1042 | DBGPRINTF5(("SCANTREE: checking node %p\n", head)); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1043 | |
| 1044 | if ((head->type != TDOT) && (strcmp(".", head->words[0]) == 0)) { |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 1045 | DBGPRINTF5(("SCANTREE: dot found in node %p\n", head)); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1046 | return head; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1047 | } |
| 1048 | |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1049 | return NULL; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1050 | } |
| 1051 | |
| 1052 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1053 | static void onecommand(void) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1054 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1055 | int i; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1056 | jmp_buf m1; |
| 1057 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 1058 | DBGPRINTF(("ONECOMMAND: enter, outtree=%p\n", outtree)); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1059 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1060 | while (e.oenv) |
| 1061 | quitenv(); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1062 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1063 | areanum = 1; |
| 1064 | freehere(areanum); |
| 1065 | freearea(areanum); |
| 1066 | garbage(); |
| 1067 | wdlist = 0; |
| 1068 | iolist = 0; |
| 1069 | e.errpt = 0; |
| 1070 | e.linep = line; |
| 1071 | yynerrs = 0; |
| 1072 | multiline = 0; |
| 1073 | inparse = 1; |
| 1074 | intr = 0; |
| 1075 | execflg = 0; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1076 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1077 | setjmp(failpt = m1); /* Bruce Evans' fix */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1078 | if (setjmp(failpt = m1) || yyparse() || intr) { |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1079 | |
| 1080 | DBGPRINTF(("ONECOMMAND: this is not good.\n")); |
| 1081 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1082 | while (e.oenv) |
| 1083 | quitenv(); |
| 1084 | scraphere(); |
| 1085 | if (!interactive && intr) |
| 1086 | leave(); |
| 1087 | inparse = 0; |
| 1088 | intr = 0; |
| 1089 | return; |
| 1090 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1091 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1092 | inparse = 0; |
| 1093 | brklist = 0; |
| 1094 | intr = 0; |
| 1095 | execflg = 0; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1096 | |
| 1097 | if (!flag['n']) { |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 1098 | DBGPRINTF(("ONECOMMAND: calling execute, t=outtree=%p\n", |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1099 | outtree)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1100 | execute(outtree, NOPIPE, NOPIPE, 0); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1101 | } |
| 1102 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1103 | if (!interactive && intr) { |
| 1104 | execflg = 0; |
| 1105 | leave(); |
| 1106 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1107 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1108 | if ((i = trapset) != 0) { |
| 1109 | trapset = 0; |
| 1110 | runtrap(i); |
| 1111 | } |
| 1112 | } |
| 1113 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1114 | static void fail(void) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1115 | { |
| 1116 | longjmp(failpt, 1); |
| 1117 | /* NOTREACHED */ |
| 1118 | } |
| 1119 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1120 | static void leave(void) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1121 | { |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1122 | DBGPRINTF(("LEAVE: leave called!\n")); |
| 1123 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1124 | if (execflg) |
| 1125 | fail(); |
| 1126 | scraphere(); |
| 1127 | freehere(1); |
| 1128 | runtrap(0); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1129 | _exit(exstat); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1130 | /* NOTREACHED */ |
| 1131 | } |
| 1132 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1133 | static void warn(char *s) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1134 | { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1135 | if (*s) { |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1136 | prs(s); |
| 1137 | exstat = -1; |
| 1138 | } |
| 1139 | prs("\n"); |
| 1140 | if (flag['e']) |
| 1141 | leave(); |
| 1142 | } |
| 1143 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1144 | static void err(char *s) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1145 | { |
| 1146 | warn(s); |
| 1147 | if (flag['n']) |
| 1148 | return; |
| 1149 | if (!interactive) |
| 1150 | leave(); |
| 1151 | if (e.errpt) |
| 1152 | longjmp(e.errpt, 1); |
| 1153 | closeall(); |
| 1154 | e.iop = e.iobase = iostack; |
| 1155 | } |
| 1156 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1157 | static int newenv(int f) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1158 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1159 | struct env *ep; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1160 | |
| 1161 | DBGPRINTF(("NEWENV: f=%d (indicates quitenv and return)\n", f)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1162 | |
| 1163 | if (f) { |
| 1164 | quitenv(); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 1165 | return 1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1166 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1167 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1168 | ep = (struct env *) space(sizeof(*ep)); |
| 1169 | if (ep == NULL) { |
| 1170 | while (e.oenv) |
| 1171 | quitenv(); |
| 1172 | fail(); |
| 1173 | } |
| 1174 | *ep = e; |
| 1175 | e.oenv = ep; |
| 1176 | e.errpt = errpt; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1177 | |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 1178 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1179 | } |
| 1180 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1181 | static void quitenv(void) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1182 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1183 | struct env *ep; |
| 1184 | int fd; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1185 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 1186 | DBGPRINTF(("QUITENV: e.oenv=%p\n", e.oenv)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1187 | |
| 1188 | if ((ep = e.oenv) != NULL) { |
| 1189 | fd = e.iofd; |
| 1190 | e = *ep; |
| 1191 | /* should close `'d files */ |
| 1192 | DELETE(ep); |
| 1193 | while (--fd >= e.iofd) |
| 1194 | close(fd); |
| 1195 | } |
| 1196 | } |
| 1197 | |
| 1198 | /* |
| 1199 | * Is any character from s1 in s2? |
| 1200 | */ |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1201 | static int anys(char *s1, char *s2) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1202 | { |
| 1203 | while (*s1) |
| 1204 | if (any(*s1++, s2)) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 1205 | return 1; |
| 1206 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1207 | } |
| 1208 | |
| 1209 | /* |
| 1210 | * Is character c in s? |
| 1211 | */ |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1212 | static int any(int c, char *s) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1213 | { |
| 1214 | while (*s) |
| 1215 | if (*s++ == c) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 1216 | return 1; |
| 1217 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1218 | } |
| 1219 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1220 | static char *putn(int n) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1221 | { |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1222 | return itoa(n); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1223 | } |
| 1224 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1225 | static void next(int f) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1226 | { |
| 1227 | PUSHIO(afile, f, filechar); |
| 1228 | } |
| 1229 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1230 | static void onintr(int s) /* ANSI C requires a parameter */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1231 | { |
| 1232 | signal(SIGINT, onintr); |
| 1233 | intr = 1; |
| 1234 | if (interactive) { |
| 1235 | if (inparse) { |
| 1236 | prs("\n"); |
| 1237 | fail(); |
| 1238 | } |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1239 | } else if (heedint) { |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1240 | execflg = 0; |
| 1241 | leave(); |
| 1242 | } |
| 1243 | } |
| 1244 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1245 | static char *space(int n) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1246 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1247 | char *cp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1248 | |
| 1249 | if ((cp = getcell(n)) == 0) |
| 1250 | err("out of string space"); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1251 | return cp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1252 | } |
| 1253 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1254 | static char *strsave(char *s, int a) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1255 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1256 | char *cp, *xp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1257 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1258 | if ((cp = space(strlen(s) + 1)) != NULL) { |
| 1259 | setarea((char *) cp, a); |
| 1260 | for (xp = cp; (*xp++ = *s++) != '\0';); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1261 | return cp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1262 | } |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1263 | return ""; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1264 | } |
| 1265 | |
| 1266 | /* |
| 1267 | * trap handling |
| 1268 | */ |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1269 | static void sig(int i) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1270 | { |
| 1271 | trapset = i; |
| 1272 | signal(i, sig); |
| 1273 | } |
| 1274 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1275 | static void runtrap(int i) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1276 | { |
| 1277 | char *trapstr; |
| 1278 | |
| 1279 | if ((trapstr = trap[i]) == NULL) |
| 1280 | return; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1281 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1282 | if (i == 0) |
| 1283 | trap[i] = 0; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1284 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1285 | RUN(aword, trapstr, nlchar); |
| 1286 | } |
| 1287 | |
| 1288 | /* -------- var.c -------- */ |
| 1289 | |
| 1290 | /* |
| 1291 | * Find the given name in the dictionary |
| 1292 | * and return its value. If the name was |
| 1293 | * not previously there, enter it now and |
| 1294 | * return a null value. |
| 1295 | */ |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1296 | static struct var *lookup(char *n) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1297 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1298 | struct var *vp; |
| 1299 | char *cp; |
| 1300 | int c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1301 | static struct var dummy; |
| 1302 | |
| 1303 | if (isdigit(*n)) { |
| 1304 | dummy.name = n; |
| 1305 | for (c = 0; isdigit(*n) && c < 1000; n++) |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1306 | c = c * 10 + *n - '0'; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1307 | dummy.status = RONLY; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1308 | dummy.value = c <= dolc ? dolv[c] : null; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1309 | return &dummy; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1310 | } |
| 1311 | for (vp = vlist; vp; vp = vp->next) |
| 1312 | if (eqname(vp->name, n)) |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1313 | return vp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1314 | cp = findeq(n); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1315 | vp = (struct var *) space(sizeof(*vp)); |
| 1316 | if (vp == 0 || (vp->name = space((int) (cp - n) + 2)) == 0) { |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1317 | dummy.name = dummy.value = ""; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1318 | return &dummy; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1319 | } |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1320 | for (cp = vp->name; (*cp = *n++) && *cp != '='; cp++); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1321 | if (*cp == 0) |
| 1322 | *cp = '='; |
| 1323 | *++cp = 0; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1324 | setarea((char *) vp, 0); |
| 1325 | setarea((char *) vp->name, 0); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1326 | vp->value = null; |
| 1327 | vp->next = vlist; |
| 1328 | vp->status = GETCELL; |
| 1329 | vlist = vp; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1330 | return vp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1331 | } |
| 1332 | |
| 1333 | /* |
| 1334 | * give variable at `vp' the value `val'. |
| 1335 | */ |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1336 | static void setval(struct var *vp, char *val) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1337 | { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1338 | nameval(vp, val, (char *) NULL); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1339 | } |
| 1340 | |
| 1341 | /* |
| 1342 | * if name is not NULL, it must be |
| 1343 | * a prefix of the space `val', |
| 1344 | * and end with `='. |
| 1345 | * this is all so that exporting |
| 1346 | * values is reasonably painless. |
| 1347 | */ |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1348 | static void nameval(struct var *vp, char *val, char *name) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1349 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1350 | char *cp, *xp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1351 | char *nv; |
| 1352 | int fl; |
| 1353 | |
| 1354 | if (vp->status & RONLY) { |
| 1355 | for (xp = vp->name; *xp && *xp != '=';) |
| 1356 | putc(*xp++, stderr); |
| 1357 | err(" is read-only"); |
| 1358 | return; |
| 1359 | } |
| 1360 | fl = 0; |
| 1361 | if (name == NULL) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1362 | xp = space(strlen(vp->name) + strlen(val) + 2); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1363 | if (xp == 0) |
| 1364 | return; |
| 1365 | /* make string: name=value */ |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1366 | setarea((char *) xp, 0); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1367 | name = xp; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1368 | for (cp = vp->name; (*xp = *cp++) && *xp != '='; xp++); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1369 | if (*xp++ == 0) |
| 1370 | xp[-1] = '='; |
| 1371 | nv = xp; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1372 | for (cp = val; (*xp++ = *cp++) != '\0';); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1373 | val = nv; |
| 1374 | fl = GETCELL; |
| 1375 | } |
| 1376 | if (vp->status & GETCELL) |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1377 | freecell(vp->name); /* form new string `name=value' */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1378 | vp->name = name; |
| 1379 | vp->value = val; |
| 1380 | vp->status |= fl; |
| 1381 | } |
| 1382 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1383 | static void export(struct var *vp) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1384 | { |
| 1385 | vp->status |= EXPORT; |
| 1386 | } |
| 1387 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1388 | static void ronly(struct var *vp) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1389 | { |
Matt Kraai | 69edfec | 2001-08-06 14:14:18 +0000 | [diff] [blame] | 1390 | if (isalpha(vp->name[0]) || vp->name[0] == '_') /* not an internal symbol */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1391 | vp->status |= RONLY; |
| 1392 | } |
| 1393 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1394 | static int isassign(char *s) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1395 | { |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1396 | DBGPRINTF7(("ISASSIGN: enter, s=%s\n", s)); |
| 1397 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1398 | if (!isalpha((int) *s) && *s != '_') |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 1399 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1400 | for (; *s != '='; s++) |
Matt Kraai | 69edfec | 2001-08-06 14:14:18 +0000 | [diff] [blame] | 1401 | if (*s == 0 || (!isalnum(*s) && *s != '_')) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 1402 | return 0; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1403 | |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 1404 | return 1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1405 | } |
| 1406 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1407 | static int assign(char *s, int cf) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1408 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1409 | char *cp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1410 | struct var *vp; |
| 1411 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1412 | DBGPRINTF7(("ASSIGN: enter, s=%s, cf=%d\n", s, cf)); |
| 1413 | |
Matt Kraai | 69edfec | 2001-08-06 14:14:18 +0000 | [diff] [blame] | 1414 | if (!isalpha(*s) && *s != '_') |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 1415 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1416 | for (cp = s; *cp != '='; cp++) |
Matt Kraai | 69edfec | 2001-08-06 14:14:18 +0000 | [diff] [blame] | 1417 | if (*cp == 0 || (!isalnum(*cp) && *cp != '_')) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 1418 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1419 | vp = lookup(s); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1420 | nameval(vp, ++cp, cf == COPYV ? (char *) NULL : s); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1421 | if (cf != COPYV) |
| 1422 | vp->status &= ~GETCELL; |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 1423 | return 1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1424 | } |
| 1425 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1426 | static int checkname(char *cp) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1427 | { |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1428 | DBGPRINTF7(("CHECKNAME: enter, cp=%s\n", cp)); |
| 1429 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1430 | if (!isalpha(*cp++) && *(cp - 1) != '_') |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 1431 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1432 | while (*cp) |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1433 | if (!isalnum(*cp++) && *(cp - 1) != '_') |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 1434 | return 0; |
| 1435 | return 1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1436 | } |
| 1437 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1438 | static void putvlist(int f, int out) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1439 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1440 | struct var *vp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1441 | |
| 1442 | for (vp = vlist; vp; vp = vp->next) |
Matt Kraai | 69edfec | 2001-08-06 14:14:18 +0000 | [diff] [blame] | 1443 | if (vp->status & f && (isalpha(*vp->name) || *vp->name == '_')) { |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1444 | if (vp->status & EXPORT) |
| 1445 | write(out, "export ", 7); |
| 1446 | if (vp->status & RONLY) |
| 1447 | write(out, "readonly ", 9); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1448 | write(out, vp->name, (int) (findeq(vp->name) - vp->name)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1449 | write(out, "\n", 1); |
| 1450 | } |
| 1451 | } |
| 1452 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1453 | static int eqname(char *n1, char *n2) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1454 | { |
| 1455 | for (; *n1 != '=' && *n1 != 0; n1++) |
| 1456 | if (*n2++ != *n1) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 1457 | return 0; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1458 | return *n2 == 0 || *n2 == '='; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1459 | } |
| 1460 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1461 | static char *findeq(char *cp) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1462 | { |
| 1463 | while (*cp != '\0' && *cp != '=') |
| 1464 | cp++; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1465 | return cp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1466 | } |
| 1467 | |
| 1468 | /* -------- gmatch.c -------- */ |
| 1469 | /* |
| 1470 | * int gmatch(string, pattern) |
| 1471 | * char *string, *pattern; |
| 1472 | * |
| 1473 | * Match a pattern as in sh(1). |
| 1474 | */ |
| 1475 | |
| 1476 | #define CMASK 0377 |
| 1477 | #define QUOTE 0200 |
| 1478 | #define QMASK (CMASK&~QUOTE) |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1479 | #define NOT '!' /* might use ^ */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1480 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1481 | static int gmatch(char *s, char *p) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1482 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1483 | int sc, pc; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1484 | |
| 1485 | if (s == NULL || p == NULL) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 1486 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1487 | while ((pc = *p++ & CMASK) != '\0') { |
| 1488 | sc = *s++ & QMASK; |
| 1489 | switch (pc) { |
| 1490 | case '[': |
| 1491 | if ((p = cclass(p, sc)) == NULL) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 1492 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1493 | break; |
| 1494 | |
| 1495 | case '?': |
| 1496 | if (sc == 0) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 1497 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1498 | break; |
| 1499 | |
| 1500 | case '*': |
| 1501 | s--; |
| 1502 | do { |
| 1503 | if (*p == '\0' || gmatch(s, p)) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 1504 | return 1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1505 | } while (*s++ != '\0'); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 1506 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1507 | |
| 1508 | default: |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1509 | if (sc != (pc & ~QUOTE)) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 1510 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1511 | } |
| 1512 | } |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1513 | return *s == 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1514 | } |
| 1515 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1516 | static char *cclass(char *p, int sub) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1517 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1518 | int c, d, not, found; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1519 | |
| 1520 | if ((not = *p == NOT) != 0) |
| 1521 | p++; |
| 1522 | found = not; |
| 1523 | do { |
| 1524 | if (*p == '\0') |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1525 | return NULL; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1526 | c = *p & CMASK; |
| 1527 | if (p[1] == '-' && p[2] != ']') { |
| 1528 | d = p[2] & CMASK; |
| 1529 | p++; |
| 1530 | } else |
| 1531 | d = c; |
| 1532 | if (c == sub || (c <= sub && sub <= d)) |
| 1533 | found = !not; |
| 1534 | } while (*++p != ']'); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1535 | return found ? p + 1 : NULL; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1536 | } |
| 1537 | |
| 1538 | |
| 1539 | /* -------- area.c -------- */ |
| 1540 | |
| 1541 | /* |
| 1542 | * All memory between (char *)areabot and (char *)(areatop+1) is |
| 1543 | * exclusively administered by the area management routines. |
| 1544 | * It is assumed that sbrk() and brk() manipulate the high end. |
| 1545 | */ |
| 1546 | |
| 1547 | #define sbrk(X) ({ void * __q = (void *)-1; if (brkaddr + (int)(X) < brktop) { __q = brkaddr; brkaddr+=(int)(X); } __q;}) |
| 1548 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1549 | static void initarea(void) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1550 | { |
Mike Frysinger | 3132e9d | 2006-06-02 06:30:30 +0000 | [diff] [blame] | 1551 | brkaddr = xmalloc(AREASIZE); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1552 | brktop = brkaddr + AREASIZE; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1553 | |
Eric Andersen | a68ea1c | 2006-01-30 22:48:39 +0000 | [diff] [blame] | 1554 | while ((long) sbrk(0) & ALIGN) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1555 | sbrk(1); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1556 | areabot = (struct region *) sbrk(REGSIZE); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1557 | |
| 1558 | areabot->next = areabot; |
| 1559 | areabot->area = BUSY; |
| 1560 | areatop = areabot; |
| 1561 | areanxt = areabot; |
| 1562 | } |
| 1563 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1564 | char *getcell(unsigned nbytes) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1565 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1566 | int nregio; |
| 1567 | struct region *p, *q; |
| 1568 | int i; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1569 | |
| 1570 | if (nbytes == 0) { |
| 1571 | puts("getcell(0)"); |
| 1572 | abort(); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1573 | } |
| 1574 | /* silly and defeats the algorithm */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1575 | /* |
| 1576 | * round upwards and add administration area |
| 1577 | */ |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1578 | nregio = (nbytes + (REGSIZE - 1)) / REGSIZE + 1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1579 | for (p = areanxt;;) { |
| 1580 | if (p->area > areanum) { |
| 1581 | /* |
| 1582 | * merge free cells |
| 1583 | */ |
| 1584 | while ((q = p->next)->area > areanum && q != areanxt) |
| 1585 | p->next = q->next; |
| 1586 | /* |
| 1587 | * exit loop if cell big enough |
| 1588 | */ |
| 1589 | if (q >= p + nregio) |
| 1590 | goto found; |
| 1591 | } |
| 1592 | p = p->next; |
| 1593 | if (p == areanxt) |
| 1594 | break; |
| 1595 | } |
| 1596 | i = nregio >= GROWBY ? nregio : GROWBY; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1597 | p = (struct region *) sbrk(i * REGSIZE); |
| 1598 | if (p == (struct region *) -1) |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1599 | return NULL; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1600 | p--; |
| 1601 | if (p != areatop) { |
| 1602 | puts("not contig"); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1603 | abort(); /* allocated areas are contiguous */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1604 | } |
| 1605 | q = p + i; |
| 1606 | p->next = q; |
| 1607 | p->area = FREE; |
| 1608 | q->next = areabot; |
| 1609 | q->area = BUSY; |
| 1610 | areatop = q; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1611 | found: |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1612 | /* |
| 1613 | * we found a FREE area big enough, pointed to by 'p', and up to 'q' |
| 1614 | */ |
| 1615 | areanxt = p + nregio; |
| 1616 | if (areanxt < q) { |
| 1617 | /* |
| 1618 | * split into requested area and rest |
| 1619 | */ |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1620 | if (areanxt + 1 > q) { |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1621 | puts("OOM"); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1622 | abort(); /* insufficient space left for admin */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1623 | } |
| 1624 | areanxt->next = q; |
| 1625 | areanxt->area = FREE; |
| 1626 | p->next = areanxt; |
| 1627 | } |
| 1628 | p->area = areanum; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1629 | return (char *) (p + 1); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1630 | } |
| 1631 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1632 | static void freecell(char *cp) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1633 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1634 | struct region *p; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1635 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1636 | if ((p = (struct region *) cp) != NULL) { |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1637 | p--; |
| 1638 | if (p < areanxt) |
| 1639 | areanxt = p; |
| 1640 | p->area = FREE; |
| 1641 | } |
| 1642 | } |
| 1643 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1644 | static void freearea(int a) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1645 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1646 | struct region *p, *top; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1647 | |
| 1648 | top = areatop; |
| 1649 | for (p = areabot; p != top; p = p->next) |
| 1650 | if (p->area >= a) |
| 1651 | p->area = FREE; |
| 1652 | } |
| 1653 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1654 | static void setarea(char *cp, int a) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1655 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1656 | struct region *p; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1657 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1658 | if ((p = (struct region *) cp) != NULL) |
| 1659 | (p - 1)->area = a; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1660 | } |
| 1661 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1662 | int getarea(char *cp) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1663 | { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1664 | return ((struct region *) cp - 1)->area; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1665 | } |
| 1666 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1667 | static void garbage(void) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1668 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1669 | struct region *p, *q, *top; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1670 | |
| 1671 | top = areatop; |
| 1672 | for (p = areabot; p != top; p = p->next) { |
| 1673 | if (p->area > areanum) { |
| 1674 | while ((q = p->next)->area > areanum) |
| 1675 | p->next = q->next; |
| 1676 | areanxt = p; |
| 1677 | } |
| 1678 | } |
| 1679 | #ifdef SHRINKBY |
| 1680 | if (areatop >= q + SHRINKBY && q->area > areanum) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1681 | brk((char *) (q + 1)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1682 | q->next = areabot; |
| 1683 | q->area = BUSY; |
| 1684 | areatop = q; |
| 1685 | } |
| 1686 | #endif |
| 1687 | } |
| 1688 | |
| 1689 | /* -------- csyn.c -------- */ |
| 1690 | /* |
| 1691 | * shell: syntax (C version) |
| 1692 | */ |
| 1693 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1694 | int yyparse(void) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1695 | { |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1696 | DBGPRINTF7(("YYPARSE: enter...\n")); |
| 1697 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1698 | startl = 1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1699 | peeksym = 0; |
| 1700 | yynerrs = 0; |
| 1701 | outtree = c_list(); |
| 1702 | musthave('\n', 0); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1703 | return (yynerrs != 0); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1704 | } |
| 1705 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1706 | static struct op *pipeline(int cf) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1707 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1708 | struct op *t, *p; |
| 1709 | int c; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1710 | |
| 1711 | DBGPRINTF7(("PIPELINE: enter, cf=%d\n", cf)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1712 | |
| 1713 | t = command(cf); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1714 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 1715 | DBGPRINTF9(("PIPELINE: t=%p\n", t)); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1716 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1717 | if (t != NULL) { |
| 1718 | while ((c = yylex(0)) == '|') { |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1719 | if ((p = command(CONTIN)) == NULL) { |
| 1720 | DBGPRINTF8(("PIPELINE: error!\n")); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1721 | SYNTAXERR; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1722 | } |
| 1723 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1724 | if (t->type != TPAREN && t->type != TCOM) { |
| 1725 | /* shell statement */ |
| 1726 | t = block(TPAREN, t, NOBLOCK, NOWORDS); |
| 1727 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1728 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1729 | t = block(TPIPE, t, p, NOWORDS); |
| 1730 | } |
| 1731 | peeksym = c; |
| 1732 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1733 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 1734 | DBGPRINTF7(("PIPELINE: returning t=%p\n", t)); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1735 | return t; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1736 | } |
| 1737 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1738 | static struct op *andor(void) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1739 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1740 | struct op *t, *p; |
| 1741 | int c; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1742 | |
| 1743 | DBGPRINTF7(("ANDOR: enter...\n")); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1744 | |
| 1745 | t = pipeline(0); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1746 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 1747 | DBGPRINTF9(("ANDOR: t=%p\n", t)); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1748 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1749 | if (t != NULL) { |
| 1750 | while ((c = yylex(0)) == LOGAND || c == LOGOR) { |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1751 | if ((p = pipeline(CONTIN)) == NULL) { |
| 1752 | DBGPRINTF8(("ANDOR: error!\n")); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1753 | SYNTAXERR; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1754 | } |
| 1755 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1756 | t = block(c == LOGAND ? TAND : TOR, t, p, NOWORDS); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1757 | } /* WHILE */ |
| 1758 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1759 | peeksym = c; |
| 1760 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1761 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 1762 | DBGPRINTF7(("ANDOR: returning t=%p\n", t)); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1763 | return t; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1764 | } |
| 1765 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1766 | static struct op *c_list(void) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1767 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1768 | struct op *t, *p; |
| 1769 | int c; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1770 | |
| 1771 | DBGPRINTF7(("C_LIST: enter...\n")); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1772 | |
| 1773 | t = andor(); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1774 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1775 | if (t != NULL) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1776 | if ((peeksym = yylex(0)) == '&') |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1777 | t = block(TASYNC, t, NOBLOCK, NOWORDS); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1778 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1779 | while ((c = yylex(0)) == ';' || c == '&' |
| 1780 | || (multiline && c == '\n')) { |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1781 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1782 | if ((p = andor()) == NULL) |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1783 | return t; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1784 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1785 | if ((peeksym = yylex(0)) == '&') |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1786 | p = block(TASYNC, p, NOBLOCK, NOWORDS); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1787 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1788 | t = list(t, p); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1789 | } /* WHILE */ |
| 1790 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1791 | peeksym = c; |
| 1792 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1793 | /* IF */ |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 1794 | DBGPRINTF7(("C_LIST: returning t=%p\n", t)); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1795 | return t; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1796 | } |
| 1797 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1798 | static int synio(int cf) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1799 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1800 | struct ioword *iop; |
| 1801 | int i; |
| 1802 | int c; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1803 | |
| 1804 | DBGPRINTF7(("SYNIO: enter, cf=%d\n", cf)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1805 | |
| 1806 | if ((c = yylex(cf)) != '<' && c != '>') { |
| 1807 | peeksym = c; |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 1808 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1809 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1810 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1811 | i = yylval.i; |
| 1812 | musthave(WORD, 0); |
| 1813 | iop = io(iounit, i, yylval.cp); |
| 1814 | iounit = IODEFAULT; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1815 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1816 | if (i & IOHERE) |
| 1817 | markhere(yylval.cp, iop); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1818 | |
| 1819 | DBGPRINTF7(("SYNIO: returning 1\n")); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 1820 | return 1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1821 | } |
| 1822 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1823 | static void musthave(int c, int cf) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1824 | { |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1825 | if ((peeksym = yylex(cf)) != c) { |
| 1826 | DBGPRINTF7(("MUSTHAVE: error!\n")); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1827 | SYNTAXERR; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1828 | } |
| 1829 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1830 | peeksym = 0; |
| 1831 | } |
| 1832 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1833 | static struct op *simple(void) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1834 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1835 | struct op *t; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1836 | |
| 1837 | t = NULL; |
| 1838 | for (;;) { |
| 1839 | switch (peeksym = yylex(0)) { |
| 1840 | case '<': |
| 1841 | case '>': |
| 1842 | (void) synio(0); |
| 1843 | break; |
| 1844 | |
| 1845 | case WORD: |
| 1846 | if (t == NULL) { |
| 1847 | t = newtp(); |
| 1848 | t->type = TCOM; |
| 1849 | } |
| 1850 | peeksym = 0; |
| 1851 | word(yylval.cp); |
| 1852 | break; |
| 1853 | |
| 1854 | default: |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1855 | return t; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1856 | } |
| 1857 | } |
| 1858 | } |
| 1859 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1860 | static struct op *nested(int type, int mark) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1861 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1862 | struct op *t; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1863 | |
| 1864 | DBGPRINTF3(("NESTED: enter, type=%d, mark=%d\n", type, mark)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1865 | |
| 1866 | multiline++; |
| 1867 | t = c_list(); |
| 1868 | musthave(mark, 0); |
| 1869 | multiline--; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1870 | return block(type, t, NOBLOCK, NOWORDS); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1871 | } |
| 1872 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1873 | static struct op *command(int cf) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1874 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1875 | struct op *t; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1876 | struct wdblock *iosave; |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1877 | int c; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1878 | |
| 1879 | DBGPRINTF(("COMMAND: enter, cf=%d\n", cf)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1880 | |
| 1881 | iosave = iolist; |
| 1882 | iolist = NULL; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1883 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1884 | if (multiline) |
| 1885 | cf |= CONTIN; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1886 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1887 | while (synio(cf)) |
| 1888 | cf = 0; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1889 | |
| 1890 | c = yylex(cf); |
| 1891 | |
| 1892 | switch (c) { |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1893 | default: |
| 1894 | peeksym = c; |
| 1895 | if ((t = simple()) == NULL) { |
| 1896 | if (iolist == NULL) |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1897 | return NULL; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1898 | t = newtp(); |
| 1899 | t->type = TCOM; |
| 1900 | } |
| 1901 | break; |
| 1902 | |
| 1903 | case '(': |
| 1904 | t = nested(TPAREN, ')'); |
| 1905 | break; |
| 1906 | |
| 1907 | case '{': |
| 1908 | t = nested(TBRACE, '}'); |
| 1909 | break; |
| 1910 | |
| 1911 | case FOR: |
| 1912 | t = newtp(); |
| 1913 | t->type = TFOR; |
| 1914 | musthave(WORD, 0); |
| 1915 | startl = 1; |
| 1916 | t->str = yylval.cp; |
| 1917 | multiline++; |
| 1918 | t->words = wordlist(); |
| 1919 | if ((c = yylex(0)) != '\n' && c != ';') |
| 1920 | peeksym = c; |
| 1921 | t->left = dogroup(0); |
| 1922 | multiline--; |
| 1923 | break; |
| 1924 | |
| 1925 | case WHILE: |
| 1926 | case UNTIL: |
| 1927 | multiline++; |
| 1928 | t = newtp(); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1929 | t->type = c == WHILE ? TWHILE : TUNTIL; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1930 | t->left = c_list(); |
| 1931 | t->right = dogroup(1); |
| 1932 | t->words = NULL; |
| 1933 | multiline--; |
| 1934 | break; |
| 1935 | |
| 1936 | case CASE: |
| 1937 | t = newtp(); |
| 1938 | t->type = TCASE; |
| 1939 | musthave(WORD, 0); |
| 1940 | t->str = yylval.cp; |
| 1941 | startl++; |
| 1942 | multiline++; |
| 1943 | musthave(IN, CONTIN); |
| 1944 | startl++; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1945 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1946 | t->left = caselist(); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1947 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1948 | musthave(ESAC, 0); |
| 1949 | multiline--; |
| 1950 | break; |
| 1951 | |
| 1952 | case IF: |
| 1953 | multiline++; |
| 1954 | t = newtp(); |
| 1955 | t->type = TIF; |
| 1956 | t->left = c_list(); |
| 1957 | t->right = thenpart(); |
| 1958 | musthave(FI, 0); |
| 1959 | multiline--; |
| 1960 | break; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1961 | |
| 1962 | case DOT: |
| 1963 | t = newtp(); |
| 1964 | t->type = TDOT; |
| 1965 | |
| 1966 | musthave(WORD, 0); /* gets name of file */ |
| 1967 | DBGPRINTF7(("COMMAND: DOT clause, yylval.cp is %s\n", yylval.cp)); |
| 1968 | |
| 1969 | word(yylval.cp); /* add word to wdlist */ |
| 1970 | word(NOWORD); /* terminate wdlist */ |
| 1971 | t->words = copyw(); /* dup wdlist */ |
| 1972 | break; |
| 1973 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1974 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1975 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 1976 | while (synio(0)); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1977 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1978 | t = namelist(t); |
| 1979 | iolist = iosave; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1980 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 1981 | DBGPRINTF(("COMMAND: returning %p\n", t)); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1982 | |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1983 | return t; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1984 | } |
| 1985 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 1986 | static struct op *dowholefile(int type, int mark) |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1987 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 1988 | struct op *t; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 1989 | |
| 1990 | DBGPRINTF(("DOWHOLEFILE: enter, type=%d, mark=%d\n", type, mark)); |
| 1991 | |
| 1992 | multiline++; |
| 1993 | t = c_list(); |
| 1994 | multiline--; |
| 1995 | t = block(type, t, NOBLOCK, NOWORDS); |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 1996 | DBGPRINTF(("DOWHOLEFILE: return t=%p\n", t)); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 1997 | return t; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 1998 | } |
| 1999 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 2000 | static struct op *dogroup(int onlydone) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2001 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2002 | int c; |
| 2003 | struct op *mylist; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2004 | |
| 2005 | c = yylex(CONTIN); |
| 2006 | if (c == DONE && onlydone) |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2007 | return NULL; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2008 | if (c != DO) |
| 2009 | SYNTAXERR; |
| 2010 | mylist = c_list(); |
| 2011 | musthave(DONE, 0); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2012 | return mylist; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2013 | } |
| 2014 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 2015 | static struct op *thenpart(void) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2016 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2017 | int c; |
| 2018 | struct op *t; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2019 | |
| 2020 | if ((c = yylex(0)) != THEN) { |
| 2021 | peeksym = c; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2022 | return NULL; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2023 | } |
| 2024 | t = newtp(); |
| 2025 | t->type = 0; |
| 2026 | t->left = c_list(); |
| 2027 | if (t->left == NULL) |
| 2028 | SYNTAXERR; |
| 2029 | t->right = elsepart(); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2030 | return t; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2031 | } |
| 2032 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 2033 | static struct op *elsepart(void) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2034 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2035 | int c; |
| 2036 | struct op *t; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2037 | |
| 2038 | switch (c = yylex(0)) { |
| 2039 | case ELSE: |
| 2040 | if ((t = c_list()) == NULL) |
| 2041 | SYNTAXERR; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2042 | return t; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2043 | |
| 2044 | case ELIF: |
| 2045 | t = newtp(); |
| 2046 | t->type = TELIF; |
| 2047 | t->left = c_list(); |
| 2048 | t->right = thenpart(); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2049 | return t; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2050 | |
| 2051 | default: |
| 2052 | peeksym = c; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2053 | return NULL; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2054 | } |
| 2055 | } |
| 2056 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 2057 | static struct op *caselist(void) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2058 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2059 | struct op *t; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2060 | |
| 2061 | t = NULL; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2062 | while ((peeksym = yylex(CONTIN)) != ESAC) { |
| 2063 | DBGPRINTF(("CASELIST, doing yylex, peeksym=%d\n", peeksym)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2064 | t = list(t, casepart()); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2065 | } |
| 2066 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 2067 | DBGPRINTF(("CASELIST, returning t=%p\n", t)); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2068 | return t; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2069 | } |
| 2070 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 2071 | static struct op *casepart(void) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2072 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2073 | struct op *t; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2074 | |
| 2075 | DBGPRINTF7(("CASEPART: enter...\n")); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2076 | |
| 2077 | t = newtp(); |
| 2078 | t->type = TPAT; |
| 2079 | t->words = pattern(); |
| 2080 | musthave(')', 0); |
| 2081 | t->left = c_list(); |
| 2082 | if ((peeksym = yylex(CONTIN)) != ESAC) |
| 2083 | musthave(BREAK, CONTIN); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2084 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 2085 | DBGPRINTF7(("CASEPART: made newtp(TPAT, t=%p)\n", t)); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2086 | |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2087 | return t; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2088 | } |
| 2089 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 2090 | static char **pattern(void) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2091 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2092 | int c, cf; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2093 | |
| 2094 | cf = CONTIN; |
| 2095 | do { |
| 2096 | musthave(WORD, cf); |
| 2097 | word(yylval.cp); |
| 2098 | cf = 0; |
| 2099 | } while ((c = yylex(0)) == '|'); |
| 2100 | peeksym = c; |
| 2101 | word(NOWORD); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2102 | |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2103 | return copyw(); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2104 | } |
| 2105 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 2106 | static char **wordlist(void) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2107 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2108 | int c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2109 | |
| 2110 | if ((c = yylex(0)) != IN) { |
| 2111 | peeksym = c; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2112 | return NULL; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2113 | } |
| 2114 | startl = 0; |
| 2115 | while ((c = yylex(0)) == WORD) |
| 2116 | word(yylval.cp); |
| 2117 | word(NOWORD); |
| 2118 | peeksym = c; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2119 | return copyw(); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2120 | } |
| 2121 | |
| 2122 | /* |
| 2123 | * supporting functions |
| 2124 | */ |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2125 | static struct op *list(struct op *t1, struct op *t2) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2126 | { |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 2127 | DBGPRINTF7(("LIST: enter, t1=%p, t2=%p\n", t1, t2)); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2128 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2129 | if (t1 == NULL) |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2130 | return t2; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2131 | if (t2 == NULL) |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2132 | return t1; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2133 | |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2134 | return block(TLIST, t1, t2, NOWORDS); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2135 | } |
| 2136 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 2137 | static struct op *block(int type, struct op *t1, struct op *t2, char **wp) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2138 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2139 | struct op *t; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2140 | |
| 2141 | DBGPRINTF7(("BLOCK: enter, type=%d (%s)\n", type, T_CMD_NAMES[type])); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2142 | |
| 2143 | t = newtp(); |
| 2144 | t->type = type; |
| 2145 | t->left = t1; |
| 2146 | t->right = t2; |
| 2147 | t->words = wp; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2148 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 2149 | DBGPRINTF7(("BLOCK: inserted %p between %p and %p\n", t, t1, |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2150 | t2)); |
| 2151 | |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2152 | return t; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2153 | } |
| 2154 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2155 | /* See if given string is a shell multiline (FOR, IF, etc) */ |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2156 | static int rlookup(char *n) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2157 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2158 | const struct res *rp; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2159 | |
| 2160 | DBGPRINTF7(("RLOOKUP: enter, n is %s\n", n)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2161 | |
| 2162 | for (rp = restab; rp->r_name; rp++) |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2163 | if (strcmp(rp->r_name, n) == 0) { |
| 2164 | DBGPRINTF7(("RLOOKUP: match, returning %d\n", rp->r_val)); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2165 | return rp->r_val; /* Return numeric code for shell multiline */ |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2166 | } |
| 2167 | |
| 2168 | DBGPRINTF7(("RLOOKUP: NO match, returning 0\n")); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 2169 | return 0; /* Not a shell multiline */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2170 | } |
| 2171 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 2172 | static struct op *newtp(void) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2173 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2174 | struct op *t; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2175 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2176 | t = (struct op *) tree(sizeof(*t)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2177 | t->type = 0; |
| 2178 | t->words = NULL; |
| 2179 | t->ioact = NULL; |
| 2180 | t->left = NULL; |
| 2181 | t->right = NULL; |
| 2182 | t->str = NULL; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2183 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 2184 | DBGPRINTF3(("NEWTP: allocated %p\n", t)); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2185 | |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2186 | return t; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2187 | } |
| 2188 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2189 | static struct op *namelist(struct op *t) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2190 | { |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2191 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 2192 | DBGPRINTF7(("NAMELIST: enter, t=%p, type %s, iolist=%p\n", t, |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2193 | T_CMD_NAMES[t->type], iolist)); |
| 2194 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2195 | if (iolist) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2196 | iolist = addword((char *) NULL, iolist); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2197 | t->ioact = copyio(); |
| 2198 | } else |
| 2199 | t->ioact = NULL; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2200 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2201 | if (t->type != TCOM) { |
| 2202 | if (t->type != TPAREN && t->ioact != NULL) { |
| 2203 | t = block(TPAREN, t, NOBLOCK, NOWORDS); |
| 2204 | t->ioact = t->left->ioact; |
| 2205 | t->left->ioact = NULL; |
| 2206 | } |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2207 | return t; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2208 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2209 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2210 | word(NOWORD); |
| 2211 | t->words = copyw(); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2212 | |
| 2213 | |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2214 | return t; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2215 | } |
| 2216 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 2217 | static char **copyw(void) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2218 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2219 | char **wd; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2220 | |
| 2221 | wd = getwords(wdlist); |
| 2222 | wdlist = 0; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2223 | return wd; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2224 | } |
| 2225 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 2226 | static void word(char *cp) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2227 | { |
| 2228 | wdlist = addword(cp, wdlist); |
| 2229 | } |
| 2230 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 2231 | static struct ioword **copyio(void) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2232 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2233 | struct ioword **iop; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2234 | |
| 2235 | iop = (struct ioword **) getwords(iolist); |
| 2236 | iolist = 0; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2237 | return iop; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2238 | } |
| 2239 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 2240 | static struct ioword *io(int u, int f, char *cp) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2241 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2242 | struct ioword *iop; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2243 | |
| 2244 | iop = (struct ioword *) tree(sizeof(*iop)); |
| 2245 | iop->io_unit = u; |
| 2246 | iop->io_flag = f; |
| 2247 | iop->io_name = cp; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2248 | iolist = addword((char *) iop, iolist); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2249 | return iop; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2250 | } |
| 2251 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 2252 | static void zzerr(void) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2253 | { |
| 2254 | yyerror("syntax error"); |
| 2255 | } |
| 2256 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 2257 | static void yyerror(char *s) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2258 | { |
| 2259 | yynerrs++; |
| 2260 | if (interactive && e.iop <= iostack) { |
| 2261 | multiline = 0; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2262 | while (eofc() == 0 && yylex(0) != '\n'); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2263 | } |
| 2264 | err(s); |
| 2265 | fail(); |
| 2266 | } |
| 2267 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 2268 | static int yylex(int cf) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2269 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2270 | int c, c1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2271 | int atstart; |
| 2272 | |
| 2273 | if ((c = peeksym) > 0) { |
| 2274 | peeksym = 0; |
| 2275 | if (c == '\n') |
| 2276 | startl = 1; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2277 | return c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2278 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2279 | |
| 2280 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2281 | nlseen = 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2282 | atstart = startl; |
| 2283 | startl = 0; |
| 2284 | yylval.i = 0; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2285 | e.linep = line; |
| 2286 | |
| 2287 | /* MALAMO */ |
| 2288 | line[LINELIM - 1] = '\0'; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2289 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2290 | loop: |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2291 | while ((c = my_getc(0)) == ' ' || c == '\t') /* Skip whitespace */ |
| 2292 | ; |
| 2293 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2294 | switch (c) { |
| 2295 | default: |
| 2296 | if (any(c, "0123456789")) { |
| 2297 | unget(c1 = my_getc(0)); |
| 2298 | if (c1 == '<' || c1 == '>') { |
| 2299 | iounit = c - '0'; |
| 2300 | goto loop; |
| 2301 | } |
| 2302 | *e.linep++ = c; |
| 2303 | c = c1; |
| 2304 | } |
| 2305 | break; |
| 2306 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2307 | case '#': /* Comment, skip to next newline or End-of-string */ |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2308 | while ((c = my_getc(0)) != 0 && c != '\n'); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2309 | unget(c); |
| 2310 | goto loop; |
| 2311 | |
| 2312 | case 0: |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2313 | DBGPRINTF5(("YYLEX: return 0, c=%d\n", c)); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2314 | return c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2315 | |
| 2316 | case '$': |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2317 | DBGPRINTF9(("YYLEX: found $\n")); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2318 | *e.linep++ = c; |
| 2319 | if ((c = my_getc(0)) == '{') { |
| 2320 | if ((c = collect(c, '}')) != '\0') |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2321 | return c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2322 | goto pack; |
| 2323 | } |
| 2324 | break; |
| 2325 | |
| 2326 | case '`': |
| 2327 | case '\'': |
| 2328 | case '"': |
| 2329 | if ((c = collect(c, c)) != '\0') |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2330 | return c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2331 | goto pack; |
| 2332 | |
| 2333 | case '|': |
| 2334 | case '&': |
| 2335 | case ';': |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2336 | startl = 1; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2337 | /* If more chars process them, else return NULL char */ |
| 2338 | if ((c1 = dual(c)) != '\0') |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2339 | return c1; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2340 | else |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2341 | return c; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2342 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2343 | case '^': |
| 2344 | startl = 1; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2345 | return '|'; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2346 | case '>': |
| 2347 | case '<': |
| 2348 | diag(c); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2349 | return c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2350 | |
| 2351 | case '\n': |
| 2352 | nlseen++; |
| 2353 | gethere(); |
| 2354 | startl = 1; |
| 2355 | if (multiline || cf & CONTIN) { |
| 2356 | if (interactive && e.iop <= iostack) { |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 2357 | #ifdef CONFIG_FEATURE_COMMAND_EDITING |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2358 | current_prompt = cprompt->value; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2359 | #else |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2360 | prs(cprompt->value); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2361 | #endif |
| 2362 | } |
| 2363 | if (cf & CONTIN) |
| 2364 | goto loop; |
| 2365 | } |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2366 | return c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2367 | |
| 2368 | case '(': |
| 2369 | case ')': |
| 2370 | startl = 1; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2371 | return c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2372 | } |
| 2373 | |
| 2374 | unget(c); |
| 2375 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2376 | pack: |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2377 | while ((c = my_getc(0)) != 0 && !any(c, "`$ '\"\t;&<>()|^\n")) { |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2378 | if (e.linep >= elinep) |
| 2379 | err("word too long"); |
| 2380 | else |
| 2381 | *e.linep++ = c; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2382 | }; |
| 2383 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2384 | unget(c); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2385 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2386 | if (any(c, "\"'`$")) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2387 | goto loop; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2388 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2389 | *e.linep++ = '\0'; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2390 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2391 | if (atstart && (c = rlookup(line)) != 0) { |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2392 | startl = 1; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2393 | return c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2394 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2395 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2396 | yylval.cp = strsave(line, areanum); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2397 | return WORD; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2398 | } |
| 2399 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2400 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2401 | static int collect(int c, int c1) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2402 | { |
| 2403 | char s[2]; |
| 2404 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2405 | DBGPRINTF8(("COLLECT: enter, c=%d, c1=%d\n", c, c1)); |
| 2406 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2407 | *e.linep++ = c; |
| 2408 | while ((c = my_getc(c1)) != c1) { |
| 2409 | if (c == 0) { |
| 2410 | unget(c); |
| 2411 | s[0] = c1; |
| 2412 | s[1] = 0; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2413 | prs("no closing "); |
| 2414 | yyerror(s); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2415 | return YYERRCODE; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2416 | } |
| 2417 | if (interactive && c == '\n' && e.iop <= iostack) { |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 2418 | #ifdef CONFIG_FEATURE_COMMAND_EDITING |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2419 | current_prompt = cprompt->value; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2420 | #else |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2421 | prs(cprompt->value); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2422 | #endif |
| 2423 | } |
| 2424 | *e.linep++ = c; |
| 2425 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2426 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2427 | *e.linep++ = c; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2428 | |
| 2429 | DBGPRINTF8(("COLLECT: return 0, line is %s\n", line)); |
| 2430 | |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 2431 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2432 | } |
| 2433 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2434 | /* "multiline commands" helper func */ |
| 2435 | /* see if next 2 chars form a shell multiline */ |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2436 | static int dual(int c) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2437 | { |
| 2438 | char s[3]; |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2439 | char *cp = s; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2440 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2441 | DBGPRINTF8(("DUAL: enter, c=%d\n", c)); |
| 2442 | |
| 2443 | *cp++ = c; /* c is the given "peek" char */ |
| 2444 | *cp++ = my_getc(0); /* get next char of input */ |
| 2445 | *cp = 0; /* add EOS marker */ |
| 2446 | |
| 2447 | c = rlookup(s); /* see if 2 chars form a shell multiline */ |
| 2448 | if (c == 0) |
| 2449 | unget(*--cp); /* String is not a shell multiline, put peek char back */ |
| 2450 | |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2451 | return c; /* String is multiline, return numeric multiline (restab) code */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2452 | } |
| 2453 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2454 | static void diag(int ec) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2455 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2456 | int c; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2457 | |
| 2458 | DBGPRINTF8(("DIAG: enter, ec=%d\n", ec)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2459 | |
| 2460 | c = my_getc(0); |
| 2461 | if (c == '>' || c == '<') { |
| 2462 | if (c != ec) |
| 2463 | zzerr(); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2464 | yylval.i = ec == '>' ? IOWRITE | IOCAT : IOHERE; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2465 | c = my_getc(0); |
| 2466 | } else |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2467 | yylval.i = ec == '>' ? IOWRITE : IOREAD; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2468 | if (c != '&' || yylval.i == IOHERE) |
| 2469 | unget(c); |
| 2470 | else |
| 2471 | yylval.i |= IODUP; |
| 2472 | } |
| 2473 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 2474 | static char *tree(unsigned size) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2475 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2476 | char *t; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2477 | |
| 2478 | if ((t = getcell(size)) == NULL) { |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2479 | DBGPRINTF2(("TREE: getcell(%d) failed!\n", size)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2480 | prs("command line too complicated\n"); |
| 2481 | fail(); |
| 2482 | /* NOTREACHED */ |
| 2483 | } |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2484 | return t; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2485 | } |
| 2486 | |
| 2487 | /* VARARGS1 */ |
| 2488 | /* ARGSUSED */ |
| 2489 | |
| 2490 | /* -------- exec.c -------- */ |
| 2491 | |
| 2492 | /* |
| 2493 | * execute tree |
| 2494 | */ |
| 2495 | |
| 2496 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2497 | static int execute(struct op *t, int *pin, int *pout, int act) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2498 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2499 | struct op *t1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2500 | volatile int i, rv, a; |
| 2501 | char *cp, **wp, **wp2; |
| 2502 | struct var *vp; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2503 | struct op *outtree_save; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2504 | struct brkcon bc; |
| 2505 | |
| 2506 | #if __GNUC__ |
| 2507 | /* Avoid longjmp clobbering */ |
| 2508 | (void) ℘ |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 2509 | #endif |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2510 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2511 | if (t == NULL) { |
| 2512 | DBGPRINTF4(("EXECUTE: enter, t==null, returning.\n")); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 2513 | return 0; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2514 | } |
| 2515 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 2516 | DBGPRINTF(("EXECUTE: t=%p, t->type=%d (%s), t->words is %s\n", t, |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2517 | t->type, T_CMD_NAMES[t->type], |
| 2518 | ((t->words == NULL) ? "NULL" : t->words[0]))); |
| 2519 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2520 | rv = 0; |
| 2521 | a = areanum++; |
| 2522 | wp = (wp2 = t->words) != NULL |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2523 | ? eval(wp2, t->type == TCOM ? DOALL : DOALL & ~DOKEY) |
| 2524 | : NULL; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2525 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2526 | switch (t->type) { |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2527 | case TDOT: |
| 2528 | DBGPRINTF3(("EXECUTE: TDOT\n")); |
| 2529 | |
| 2530 | outtree_save = outtree; |
| 2531 | |
| 2532 | newfile(evalstr(t->words[0], DOALL)); |
| 2533 | |
| 2534 | t->left = dowholefile(TLIST, 0); |
| 2535 | t->right = NULL; |
| 2536 | |
| 2537 | outtree = outtree_save; |
| 2538 | |
| 2539 | if (t->left) |
| 2540 | rv = execute(t->left, pin, pout, 0); |
| 2541 | if (t->right) |
| 2542 | rv = execute(t->right, pin, pout, 0); |
| 2543 | break; |
| 2544 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2545 | case TPAREN: |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 2546 | rv = execute(t->left, pin, pout, 0); |
| 2547 | break; |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 2548 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2549 | case TCOM: |
Eric Andersen | 1c03923 | 2001-07-07 00:05:55 +0000 | [diff] [blame] | 2550 | { |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2551 | rv = forkexec(t, pin, pout, act, wp); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2552 | } |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2553 | break; |
| 2554 | |
| 2555 | case TPIPE: |
| 2556 | { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2557 | int pv[2]; |
| 2558 | |
| 2559 | if ((rv = openpipe(pv)) < 0) |
| 2560 | break; |
| 2561 | pv[0] = remap(pv[0]); |
| 2562 | pv[1] = remap(pv[1]); |
| 2563 | (void) execute(t->left, pin, pv, 0); |
| 2564 | rv = execute(t->right, pv, pout, 0); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2565 | } |
| 2566 | break; |
| 2567 | |
| 2568 | case TLIST: |
| 2569 | (void) execute(t->left, pin, pout, 0); |
| 2570 | rv = execute(t->right, pin, pout, 0); |
| 2571 | break; |
| 2572 | |
| 2573 | case TASYNC: |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2574 | { |
| 2575 | int hinteractive = interactive; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2576 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2577 | DBGPRINTF7(("EXECUTE: TASYNC clause, calling vfork()...\n")); |
| 2578 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2579 | i = vfork(); |
| 2580 | if (i != 0) { |
| 2581 | interactive = hinteractive; |
| 2582 | if (i != -1) { |
| 2583 | setval(lookup("!"), putn(i)); |
| 2584 | if (pin != NULL) |
| 2585 | closepipe(pin); |
| 2586 | if (interactive) { |
| 2587 | prs(putn(i)); |
| 2588 | prs("\n"); |
| 2589 | } |
| 2590 | } else |
| 2591 | rv = -1; |
| 2592 | setstatus(rv); |
| 2593 | } else { |
| 2594 | signal(SIGINT, SIG_IGN); |
| 2595 | signal(SIGQUIT, SIG_IGN); |
| 2596 | if (interactive) |
| 2597 | signal(SIGTERM, SIG_DFL); |
| 2598 | interactive = 0; |
| 2599 | if (pin == NULL) { |
| 2600 | close(0); |
"Vladimir N. Oleynik" | 6c35c7c | 2005-10-12 15:34:25 +0000 | [diff] [blame] | 2601 | open(bb_dev_null, 0); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2602 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2603 | _exit(execute(t->left, pin, pout, FEXEC)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2604 | } |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2605 | } |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2606 | break; |
| 2607 | |
| 2608 | case TOR: |
| 2609 | case TAND: |
| 2610 | rv = execute(t->left, pin, pout, 0); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2611 | if ((t1 = t->right) != NULL && (rv == 0) == (t->type == TAND)) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2612 | rv = execute(t1, pin, pout, 0); |
| 2613 | break; |
| 2614 | |
| 2615 | case TFOR: |
| 2616 | if (wp == NULL) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2617 | wp = dolv + 1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2618 | if ((i = dolc) < 0) |
| 2619 | i = 0; |
| 2620 | } else { |
| 2621 | i = -1; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2622 | while (*wp++ != NULL); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2623 | } |
| 2624 | vp = lookup(t->str); |
| 2625 | while (setjmp(bc.brkpt)) |
| 2626 | if (isbreak) |
| 2627 | goto broken; |
| 2628 | brkset(&bc); |
| 2629 | for (t1 = t->left; i-- && *wp != NULL;) { |
| 2630 | setval(vp, *wp++); |
| 2631 | rv = execute(t1, pin, pout, 0); |
| 2632 | } |
| 2633 | brklist = brklist->nextlev; |
| 2634 | break; |
| 2635 | |
| 2636 | case TWHILE: |
| 2637 | case TUNTIL: |
| 2638 | while (setjmp(bc.brkpt)) |
| 2639 | if (isbreak) |
| 2640 | goto broken; |
| 2641 | brkset(&bc); |
| 2642 | t1 = t->left; |
| 2643 | while ((execute(t1, pin, pout, 0) == 0) == (t->type == TWHILE)) |
| 2644 | rv = execute(t->right, pin, pout, 0); |
| 2645 | brklist = brklist->nextlev; |
| 2646 | break; |
| 2647 | |
| 2648 | case TIF: |
| 2649 | case TELIF: |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2650 | if (t->right != NULL) { |
| 2651 | rv = !execute(t->left, pin, pout, 0) ? |
| 2652 | execute(t->right->left, pin, pout, 0) : |
| 2653 | execute(t->right->right, pin, pout, 0); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2654 | } |
| 2655 | break; |
| 2656 | |
| 2657 | case TCASE: |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2658 | if ((cp = evalstr(t->str, DOSUB | DOTRIM)) == 0) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2659 | cp = ""; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2660 | |
| 2661 | DBGPRINTF7(("EXECUTE: TCASE, t->str is %s, cp is %s\n", |
| 2662 | ((t->str == NULL) ? "NULL" : t->str), |
| 2663 | ((cp == NULL) ? "NULL" : cp))); |
| 2664 | |
| 2665 | if ((t1 = findcase(t->left, cp)) != NULL) { |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 2666 | DBGPRINTF7(("EXECUTE: TCASE, calling execute(t=%p, t1=%p)...\n", t, t1)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2667 | rv = execute(t1, pin, pout, 0); |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 2668 | DBGPRINTF7(("EXECUTE: TCASE, back from execute(t=%p, t1=%p)...\n", t, t1)); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2669 | } |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2670 | break; |
| 2671 | |
| 2672 | case TBRACE: |
| 2673 | /* |
| 2674 | if (iopp = t->ioact) |
| 2675 | while (*iopp) |
| 2676 | if (iosetup(*iopp++, pin!=NULL, pout!=NULL)) { |
| 2677 | rv = -1; |
| 2678 | break; |
| 2679 | } |
| 2680 | */ |
| 2681 | if (rv >= 0 && (t1 = t->left)) |
| 2682 | rv = execute(t1, pin, pout, 0); |
| 2683 | break; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2684 | |
| 2685 | }; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2686 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2687 | broken: |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2688 | t->words = wp2; |
| 2689 | isbreak = 0; |
| 2690 | freehere(areanum); |
| 2691 | freearea(areanum); |
| 2692 | areanum = a; |
| 2693 | if (interactive && intr) { |
| 2694 | closeall(); |
| 2695 | fail(); |
| 2696 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2697 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2698 | if ((i = trapset) != 0) { |
| 2699 | trapset = 0; |
| 2700 | runtrap(i); |
| 2701 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2702 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 2703 | DBGPRINTF(("EXECUTE: returning from t=%p, rv=%d\n", t, rv)); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2704 | return rv; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2705 | } |
| 2706 | |
| 2707 | static int |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2708 | forkexec(struct op *t, int *pin, int *pout, int act, char **wp) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2709 | { |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2710 | pid_t newpid; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2711 | int i, rv; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2712 | int (*shcom) (struct op *) = NULL; |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2713 | int f; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2714 | char *cp = NULL; |
| 2715 | struct ioword **iopp; |
| 2716 | int resetsig; |
| 2717 | char **owp; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2718 | int forked = 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2719 | |
| 2720 | int *hpin = pin; |
| 2721 | int *hpout = pout; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2722 | char *hwp; |
| 2723 | int hinteractive; |
| 2724 | int hintr; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2725 | struct brkcon *hbrklist; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2726 | int hexecflg; |
| 2727 | |
| 2728 | #if __GNUC__ |
| 2729 | /* Avoid longjmp clobbering */ |
| 2730 | (void) &pin; |
| 2731 | (void) &pout; |
| 2732 | (void) ℘ |
| 2733 | (void) &shcom; |
| 2734 | (void) &cp; |
| 2735 | (void) &resetsig; |
| 2736 | (void) &owp; |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 2737 | #endif |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2738 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 2739 | DBGPRINTF(("FORKEXEC: t=%p, pin %p, pout %p, act %d\n", t, pin, |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2740 | pout, act)); |
| 2741 | DBGPRINTF7(("FORKEXEC: t->words is %s\n", |
| 2742 | ((t->words == NULL) ? "NULL" : t->words[0]))); |
| 2743 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2744 | owp = wp; |
| 2745 | resetsig = 0; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2746 | rv = -1; /* system-detected error */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2747 | if (t->type == TCOM) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2748 | while ((cp = *wp++) != NULL); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2749 | cp = *wp; |
| 2750 | |
| 2751 | /* strip all initial assignments */ |
| 2752 | /* not correct wrt PATH=yyy command etc */ |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2753 | if (flag['x']) { |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 2754 | DBGPRINTF9(("FORKEXEC: echo'ing, cp=%p, wp=%p, owp=%p\n", |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2755 | cp, wp, owp)); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2756 | echo(cp ? wp : owp); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2757 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2758 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2759 | if (cp == NULL && t->ioact == NULL) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2760 | while ((cp = *owp++) != NULL && assign(cp, COPYV)); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2761 | DBGPRINTF(("FORKEXEC: returning setstatus()\n")); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2762 | return setstatus(0); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2763 | } else if (cp != NULL) { |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2764 | shcom = inbuilt(cp); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2765 | } |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2766 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2767 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2768 | t->words = wp; |
| 2769 | f = act; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2770 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 2771 | DBGPRINTF(("FORKEXEC: shcom %p, f&FEXEC 0x%x, owp %p\n", shcom, |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2772 | f & FEXEC, owp)); |
| 2773 | |
| 2774 | if (shcom == NULL && (f & FEXEC) == 0) { |
| 2775 | /* Save values in case the child process alters them */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2776 | hpin = pin; |
| 2777 | hpout = pout; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2778 | hwp = *wp; |
| 2779 | hinteractive = interactive; |
| 2780 | hintr = intr; |
| 2781 | hbrklist = brklist; |
| 2782 | hexecflg = execflg; |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 2783 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2784 | DBGPRINTF3(("FORKEXEC: calling vfork()...\n")); |
| 2785 | |
| 2786 | newpid = vfork(); |
| 2787 | |
| 2788 | if (newpid == -1) { |
Denis Vlasenko | 89f0b34 | 2006-11-18 22:04:09 +0000 | [diff] [blame] | 2789 | DBGPRINTF(("FORKEXEC: ERROR, cannot vfork()!\n")); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 2790 | return -1; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2791 | } |
| 2792 | |
| 2793 | |
| 2794 | if (newpid > 0) { /* Parent */ |
| 2795 | |
| 2796 | /* Restore values */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2797 | pin = hpin; |
| 2798 | pout = hpout; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2799 | *wp = hwp; |
| 2800 | interactive = hinteractive; |
| 2801 | intr = hintr; |
| 2802 | brklist = hbrklist; |
| 2803 | execflg = hexecflg; |
| 2804 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2805 | /* moved up |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2806 | if (i == -1) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 2807 | return rv; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2808 | */ |
| 2809 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2810 | if (pin != NULL) |
| 2811 | closepipe(pin); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2812 | |
| 2813 | return (pout == NULL ? setstatus(waitfor(newpid, 0)) : 0); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2814 | } |
| 2815 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2816 | /* Must be the child process, pid should be 0 */ |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 2817 | DBGPRINTF(("FORKEXEC: child process, shcom=%p\n", shcom)); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2818 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2819 | if (interactive) { |
| 2820 | signal(SIGINT, SIG_IGN); |
| 2821 | signal(SIGQUIT, SIG_IGN); |
| 2822 | resetsig = 1; |
| 2823 | } |
| 2824 | interactive = 0; |
| 2825 | intr = 0; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2826 | forked = 1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2827 | brklist = 0; |
| 2828 | execflg = 0; |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 2829 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2830 | |
| 2831 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2832 | if (owp != NULL) |
| 2833 | while ((cp = *owp++) != NULL && assign(cp, COPYV)) |
| 2834 | if (shcom == NULL) |
| 2835 | export(lookup(cp)); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2836 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2837 | #ifdef COMPIPE |
| 2838 | if ((pin != NULL || pout != NULL) && shcom != NULL && shcom != doexec) { |
| 2839 | err("piping to/from shell builtins not yet done"); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2840 | if (forked) |
| 2841 | _exit(-1); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 2842 | return -1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2843 | } |
| 2844 | #endif |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2845 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2846 | if (pin != NULL) { |
| 2847 | dup2(pin[0], 0); |
| 2848 | closepipe(pin); |
| 2849 | } |
| 2850 | if (pout != NULL) { |
| 2851 | dup2(pout[1], 1); |
| 2852 | closepipe(pout); |
| 2853 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2854 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2855 | if ((iopp = t->ioact) != NULL) { |
| 2856 | if (shcom != NULL && shcom != doexec) { |
| 2857 | prs(cp); |
| 2858 | err(": cannot redirect shell command"); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2859 | if (forked) |
| 2860 | _exit(-1); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 2861 | return -1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2862 | } |
| 2863 | while (*iopp) |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2864 | if (iosetup(*iopp++, pin != NULL, pout != NULL)) { |
| 2865 | if (forked) |
| 2866 | _exit(rv); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2867 | return rv; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2868 | } |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2869 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2870 | |
| 2871 | if (shcom) { |
| 2872 | i = setstatus((*shcom) (t)); |
| 2873 | if (forked) |
| 2874 | _exit(i); |
| 2875 | DBGPRINTF(("FORKEXEC: returning i=%d\n", i)); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 2876 | return i; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2877 | } |
| 2878 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2879 | /* should use FIOCEXCL */ |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2880 | for (i = FDBASE; i < NOFILE; i++) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2881 | close(i); |
| 2882 | if (resetsig) { |
| 2883 | signal(SIGINT, SIG_DFL); |
| 2884 | signal(SIGQUIT, SIG_DFL); |
| 2885 | } |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2886 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2887 | if (t->type == TPAREN) |
| 2888 | _exit(execute(t->left, NOPIPE, NOPIPE, FEXEC)); |
| 2889 | if (wp[0] == NULL) |
| 2890 | _exit(0); |
| 2891 | |
Eric Andersen | fd7a4c8 | 2004-09-02 23:13:10 +0000 | [diff] [blame] | 2892 | cp = rexecve(wp[0], wp, makenv(0, NULL)); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2893 | prs(wp[0]); |
| 2894 | prs(": "); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2895 | err(cp); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2896 | if (!execflg) |
| 2897 | trap[0] = NULL; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2898 | |
| 2899 | DBGPRINTF(("FORKEXEC: calling leave(), pid=%d\n", newpid)); |
| 2900 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2901 | leave(); |
| 2902 | /* NOTREACHED */ |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2903 | _exit(1); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2904 | } |
| 2905 | |
| 2906 | /* |
| 2907 | * 0< 1> are ignored as required |
| 2908 | * within pipelines. |
| 2909 | */ |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2910 | static int iosetup(struct ioword *iop, int pipein, int pipeout) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2911 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2912 | int u = -1; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2913 | char *cp = NULL, *msg; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2914 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 2915 | DBGPRINTF(("IOSETUP: iop %p, pipein %i, pipeout %i\n", iop, |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2916 | pipein, pipeout)); |
| 2917 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2918 | if (iop->io_unit == IODEFAULT) /* take default */ |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2919 | iop->io_unit = iop->io_flag & (IOREAD | IOHERE) ? 0 : 1; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2920 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2921 | if (pipein && iop->io_unit == 0) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 2922 | return 0; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2923 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2924 | if (pipeout && iop->io_unit == 1) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 2925 | return 0; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2926 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2927 | msg = iop->io_flag & (IOREAD | IOHERE) ? "open" : "create"; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2928 | if ((iop->io_flag & IOHERE) == 0) { |
| 2929 | cp = iop->io_name; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2930 | if ((cp = evalstr(cp, DOSUB | DOTRIM)) == NULL) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 2931 | return 1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2932 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 2933 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2934 | if (iop->io_flag & IODUP) { |
| 2935 | if (cp[1] || (!isdigit(*cp) && *cp != '-')) { |
| 2936 | prs(cp); |
| 2937 | err(": illegal >& argument"); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 2938 | return 1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2939 | } |
| 2940 | if (*cp == '-') |
| 2941 | iop->io_flag = IOCLOSE; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2942 | iop->io_flag &= ~(IOREAD | IOWRITE); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2943 | } |
| 2944 | switch (iop->io_flag) { |
| 2945 | case IOREAD: |
| 2946 | u = open(cp, 0); |
| 2947 | break; |
| 2948 | |
| 2949 | case IOHERE: |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2950 | case IOHERE | IOXHERE: |
| 2951 | u = herein(iop->io_name, iop->io_flag & IOXHERE); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2952 | cp = "here file"; |
| 2953 | break; |
| 2954 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2955 | case IOWRITE | IOCAT: |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2956 | if ((u = open(cp, 1)) >= 0) { |
Denis Vlasenko | ea62077 | 2006-10-14 02:23:43 +0000 | [diff] [blame] | 2957 | lseek(u, (long) 0, SEEK_END); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2958 | break; |
| 2959 | } |
| 2960 | case IOWRITE: |
| 2961 | u = creat(cp, 0666); |
| 2962 | break; |
| 2963 | |
| 2964 | case IODUP: |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2965 | u = dup2(*cp - '0', iop->io_unit); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2966 | break; |
| 2967 | |
| 2968 | case IOCLOSE: |
| 2969 | close(iop->io_unit); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 2970 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2971 | } |
| 2972 | if (u < 0) { |
| 2973 | prs(cp); |
| 2974 | prs(": cannot "); |
| 2975 | warn(msg); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 2976 | return 1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2977 | } else { |
| 2978 | if (u != iop->io_unit) { |
| 2979 | dup2(u, iop->io_unit); |
| 2980 | close(u); |
| 2981 | } |
| 2982 | } |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 2983 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2984 | } |
| 2985 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2986 | static void echo(char **wp) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2987 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 2988 | int i; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2989 | |
| 2990 | prs("+"); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 2991 | for (i = 0; wp[i]; i++) { |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 2992 | if (i) |
| 2993 | prs(" "); |
| 2994 | prs(wp[i]); |
| 2995 | } |
| 2996 | prs("\n"); |
| 2997 | } |
| 2998 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 2999 | static struct op **find1case(struct op *t, char *w) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3000 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3001 | struct op *t1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3002 | struct op **tp; |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3003 | char **wp, *cp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3004 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3005 | |
| 3006 | if (t == NULL) { |
| 3007 | DBGPRINTF3(("FIND1CASE: enter, t==NULL, returning.\n")); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3008 | return NULL; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3009 | } |
| 3010 | |
| 3011 | DBGPRINTF3(("FIND1CASE: enter, t->type=%d (%s)\n", t->type, |
| 3012 | T_CMD_NAMES[t->type])); |
| 3013 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3014 | if (t->type == TLIST) { |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3015 | if ((tp = find1case(t->left, w)) != NULL) { |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 3016 | DBGPRINTF3(("FIND1CASE: found one to the left, returning tp=%p\n", tp)); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3017 | return tp; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3018 | } |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3019 | t1 = t->right; /* TPAT */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3020 | } else |
| 3021 | t1 = t; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3022 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3023 | for (wp = t1->words; *wp;) |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3024 | if ((cp = evalstr(*wp++, DOSUB)) && gmatch(w, cp)) { |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 3025 | DBGPRINTF3(("FIND1CASE: returning &t1->left= %p.\n", |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3026 | &t1->left)); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3027 | return &t1->left; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3028 | } |
| 3029 | |
| 3030 | DBGPRINTF(("FIND1CASE: returning NULL\n")); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3031 | return NULL; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3032 | } |
| 3033 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 3034 | static struct op *findcase(struct op *t, char *w) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3035 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3036 | struct op **tp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3037 | |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3038 | tp = find1case(t, w); |
| 3039 | return tp != NULL ? *tp : NULL; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3040 | } |
| 3041 | |
| 3042 | /* |
| 3043 | * Enter a new loop level (marked for break/continue). |
| 3044 | */ |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 3045 | static void brkset(struct brkcon *bc) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3046 | { |
| 3047 | bc->nextlev = brklist; |
| 3048 | brklist = bc; |
| 3049 | } |
| 3050 | |
| 3051 | /* |
| 3052 | * Wait for the last process created. |
| 3053 | * Print a message for each process found |
| 3054 | * that was killed by a signal. |
| 3055 | * Ignore interrupt signals while waiting |
| 3056 | * unless `canintr' is true. |
| 3057 | */ |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3058 | static int waitfor(int lastpid, int canintr) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3059 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3060 | int pid, rv; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3061 | int s; |
| 3062 | int oheedint = heedint; |
| 3063 | |
| 3064 | heedint = 0; |
| 3065 | rv = 0; |
| 3066 | do { |
| 3067 | pid = wait(&s); |
| 3068 | if (pid == -1) { |
| 3069 | if (errno != EINTR || canintr) |
| 3070 | break; |
| 3071 | } else { |
| 3072 | if ((rv = WAITSIG(s)) != 0) { |
| 3073 | if (rv < NSIGNAL) { |
| 3074 | if (signame[rv] != NULL) { |
| 3075 | if (pid != lastpid) { |
| 3076 | prn(pid); |
| 3077 | prs(": "); |
| 3078 | } |
| 3079 | prs(signame[rv]); |
| 3080 | } |
| 3081 | } else { |
| 3082 | if (pid != lastpid) { |
| 3083 | prn(pid); |
| 3084 | prs(": "); |
| 3085 | } |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3086 | prs("Signal "); |
| 3087 | prn(rv); |
| 3088 | prs(" "); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3089 | } |
| 3090 | if (WAITCORE(s)) |
| 3091 | prs(" - core dumped"); |
| 3092 | if (rv >= NSIGNAL || signame[rv]) |
| 3093 | prs("\n"); |
| 3094 | rv = -1; |
| 3095 | } else |
| 3096 | rv = WAITVAL(s); |
| 3097 | } |
| 3098 | } while (pid != lastpid); |
| 3099 | heedint = oheedint; |
| 3100 | if (intr) { |
| 3101 | if (interactive) { |
| 3102 | if (canintr) |
| 3103 | intr = 0; |
| 3104 | } else { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3105 | if (exstat == 0) |
| 3106 | exstat = rv; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3107 | onintr(0); |
| 3108 | } |
| 3109 | } |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3110 | return rv; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3111 | } |
| 3112 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3113 | static int setstatus(int s) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3114 | { |
| 3115 | exstat = s; |
| 3116 | setval(lookup("?"), putn(s)); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3117 | return s; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3118 | } |
| 3119 | |
| 3120 | /* |
| 3121 | * PATH-searching interface to execve. |
| 3122 | * If getenv("PATH") were kept up-to-date, |
| 3123 | * execvp might be used. |
| 3124 | */ |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 3125 | static char *rexecve(char *c, char **v, char **envp) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3126 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3127 | int i; |
| 3128 | char *sp, *tp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3129 | int eacces = 0, asis = 0; |
Eric Andersen | 1c03923 | 2001-07-07 00:05:55 +0000 | [diff] [blame] | 3130 | char *name = c; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3131 | |
Rob Landley | a299efb | 2006-08-10 21:46:43 +0000 | [diff] [blame] | 3132 | if (ENABLE_FEATURE_SH_STANDALONE_SHELL) { |
| 3133 | optind = 1; |
| 3134 | if (find_applet_by_name(name)) { |
| 3135 | /* We have to exec here since we vforked. Running |
| 3136 | * run_applet_by_name() won't work and bad things |
| 3137 | * will happen. */ |
| 3138 | execve(CONFIG_BUSYBOX_EXEC_PATH, v, envp); |
| 3139 | } |
Eric Andersen | 1c03923 | 2001-07-07 00:05:55 +0000 | [diff] [blame] | 3140 | } |
Eric Andersen | 1c03923 | 2001-07-07 00:05:55 +0000 | [diff] [blame] | 3141 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 3142 | DBGPRINTF(("REXECVE: c=%p, v=%p, envp=%p\n", c, v, envp)); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3143 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3144 | sp = any('/', c) ? "" : path->value; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3145 | asis = *sp == '\0'; |
| 3146 | while (asis || *sp != '\0') { |
| 3147 | asis = 0; |
| 3148 | tp = e.linep; |
| 3149 | for (; *sp != '\0'; tp++) |
| 3150 | if ((*tp = *sp++) == ':') { |
| 3151 | asis = *sp == '\0'; |
| 3152 | break; |
| 3153 | } |
| 3154 | if (tp != e.linep) |
| 3155 | *tp++ = '/'; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3156 | for (i = 0; (*tp++ = c[i++]) != '\0';); |
Eric Andersen | 1c03923 | 2001-07-07 00:05:55 +0000 | [diff] [blame] | 3157 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3158 | DBGPRINTF3(("REXECVE: e.linep is %s\n", e.linep)); |
| 3159 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3160 | execve(e.linep, v, envp); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3161 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3162 | switch (errno) { |
| 3163 | case ENOEXEC: |
| 3164 | *v = e.linep; |
| 3165 | tp = *--v; |
| 3166 | *v = e.linep; |
Glenn L McGrath | dc4e75e | 2003-09-02 02:36:18 +0000 | [diff] [blame] | 3167 | execve(DEFAULT_SHELL, v, envp); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3168 | *v = tp; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3169 | return "no Shell"; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3170 | |
| 3171 | case ENOMEM: |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3172 | return (char *) bb_msg_memory_exhausted; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3173 | |
| 3174 | case E2BIG: |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3175 | return "argument list too long"; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3176 | |
| 3177 | case EACCES: |
| 3178 | eacces++; |
| 3179 | break; |
| 3180 | } |
| 3181 | } |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3182 | return errno == ENOENT ? "not found" : "cannot execute"; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3183 | } |
| 3184 | |
| 3185 | /* |
| 3186 | * Run the command produced by generator `f' |
| 3187 | * applied to stream `arg'. |
| 3188 | */ |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3189 | static int run(struct ioarg *argp, int (*f) (struct ioarg *)) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3190 | { |
| 3191 | struct op *otree; |
| 3192 | struct wdblock *swdlist; |
| 3193 | struct wdblock *siolist; |
| 3194 | jmp_buf ev, rt; |
| 3195 | xint *ofail; |
| 3196 | int rv; |
| 3197 | |
| 3198 | #if __GNUC__ |
| 3199 | /* Avoid longjmp clobbering */ |
| 3200 | (void) &rv; |
| 3201 | #endif |
| 3202 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 3203 | DBGPRINTF(("RUN: enter, areanum %d, outtree %p, failpt %p\n", |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3204 | areanum, outtree, failpt)); |
| 3205 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3206 | areanum++; |
| 3207 | swdlist = wdlist; |
| 3208 | siolist = iolist; |
| 3209 | otree = outtree; |
| 3210 | ofail = failpt; |
| 3211 | rv = -1; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3212 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3213 | if (newenv(setjmp(errpt = ev)) == 0) { |
| 3214 | wdlist = 0; |
| 3215 | iolist = 0; |
| 3216 | pushio(argp, f); |
| 3217 | e.iobase = e.iop; |
| 3218 | yynerrs = 0; |
| 3219 | if (setjmp(failpt = rt) == 0 && yyparse() == 0) |
| 3220 | rv = execute(outtree, NOPIPE, NOPIPE, 0); |
| 3221 | quitenv(); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3222 | } else { |
| 3223 | DBGPRINTF(("RUN: error from newenv()!\n")); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3224 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3225 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3226 | wdlist = swdlist; |
| 3227 | iolist = siolist; |
| 3228 | failpt = ofail; |
| 3229 | outtree = otree; |
| 3230 | freearea(areanum--); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3231 | |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3232 | return rv; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3233 | } |
| 3234 | |
| 3235 | /* -------- do.c -------- */ |
| 3236 | |
| 3237 | /* |
| 3238 | * built-in commands: doX |
| 3239 | */ |
| 3240 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3241 | static int dohelp(struct op *t) |
Eric Andersen | 1c03923 | 2001-07-07 00:05:55 +0000 | [diff] [blame] | 3242 | { |
| 3243 | int col; |
| 3244 | const struct builtincmd *x; |
| 3245 | |
| 3246 | printf("\nBuilt-in commands:\n"); |
| 3247 | printf("-------------------\n"); |
| 3248 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3249 | for (col = 0, x = builtincmds; x->builtinfunc != NULL; x++) { |
Eric Andersen | 1c03923 | 2001-07-07 00:05:55 +0000 | [diff] [blame] | 3250 | if (!x->name) |
| 3251 | continue; |
| 3252 | col += printf("%s%s", ((col == 0) ? "\t" : " "), x->name); |
| 3253 | if (col > 60) { |
Denis Vlasenko | c6f188d | 2006-10-26 00:37:00 +0000 | [diff] [blame] | 3254 | puts(""); |
Eric Andersen | 1c03923 | 2001-07-07 00:05:55 +0000 | [diff] [blame] | 3255 | col = 0; |
| 3256 | } |
| 3257 | } |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 3258 | #ifdef CONFIG_FEATURE_SH_STANDALONE_SHELL |
Eric Andersen | 1c03923 | 2001-07-07 00:05:55 +0000 | [diff] [blame] | 3259 | { |
| 3260 | int i; |
| 3261 | const struct BB_applet *applet; |
| 3262 | extern const struct BB_applet applets[]; |
| 3263 | extern const size_t NUM_APPLETS; |
| 3264 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3265 | for (i = 0, applet = applets; i < NUM_APPLETS; applet++, i++) { |
Eric Andersen | 1c03923 | 2001-07-07 00:05:55 +0000 | [diff] [blame] | 3266 | if (!applet->name) |
| 3267 | continue; |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 3268 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3269 | col += printf("%s%s", ((col == 0) ? "\t" : " "), applet->name); |
Eric Andersen | 1c03923 | 2001-07-07 00:05:55 +0000 | [diff] [blame] | 3270 | if (col > 60) { |
Denis Vlasenko | c6f188d | 2006-10-26 00:37:00 +0000 | [diff] [blame] | 3271 | puts(""); |
Eric Andersen | 1c03923 | 2001-07-07 00:05:55 +0000 | [diff] [blame] | 3272 | col = 0; |
| 3273 | } |
| 3274 | } |
| 3275 | } |
| 3276 | #endif |
| 3277 | printf("\n\n"); |
| 3278 | return EXIT_SUCCESS; |
| 3279 | } |
| 3280 | |
| 3281 | |
| 3282 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3283 | static int dolabel(struct op *t) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3284 | { |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 3285 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3286 | } |
| 3287 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3288 | static int dochdir(struct op *t) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3289 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3290 | char *cp, *er; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3291 | |
| 3292 | if ((cp = t->words[1]) == NULL && (cp = homedir->value) == NULL) |
| 3293 | er = ": no home directory"; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3294 | else if (chdir(cp) < 0) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3295 | er = ": bad directory"; |
| 3296 | else |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 3297 | return 0; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3298 | prs(cp != NULL ? cp : "cd"); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3299 | err(er); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 3300 | return 1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3301 | } |
| 3302 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3303 | static int doshift(struct op *t) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3304 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3305 | int n; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3306 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3307 | n = t->words[1] ? getn(t->words[1]) : 1; |
| 3308 | if (dolc < n) { |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3309 | err("nothing to shift"); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 3310 | return 1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3311 | } |
| 3312 | dolv[n] = dolv[0]; |
| 3313 | dolv += n; |
| 3314 | dolc -= n; |
| 3315 | setval(lookup("#"), putn(dolc)); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 3316 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3317 | } |
| 3318 | |
| 3319 | /* |
| 3320 | * execute login and newgrp directly |
| 3321 | */ |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 3322 | static int dologin(struct op *t) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3323 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3324 | char *cp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3325 | |
| 3326 | if (interactive) { |
| 3327 | signal(SIGINT, SIG_DFL); |
| 3328 | signal(SIGQUIT, SIG_DFL); |
| 3329 | } |
Eric Andersen | fd7a4c8 | 2004-09-02 23:13:10 +0000 | [diff] [blame] | 3330 | cp = rexecve(t->words[0], t->words, makenv(0, NULL)); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3331 | prs(t->words[0]); |
| 3332 | prs(": "); |
| 3333 | err(cp); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 3334 | return 1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3335 | } |
| 3336 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3337 | static int doumask(struct op *t) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3338 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3339 | int i, n; |
| 3340 | char *cp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3341 | |
| 3342 | if ((cp = t->words[1]) == NULL) { |
| 3343 | i = umask(0); |
| 3344 | umask(i); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3345 | for (n = 3 * 4; (n -= 3) >= 0;) |
| 3346 | putc('0' + ((i >> n) & 07), stderr); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3347 | putc('\n', stderr); |
| 3348 | } else { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3349 | for (n = 0; *cp >= '0' && *cp <= '9'; cp++) |
| 3350 | n = n * 8 + (*cp - '0'); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3351 | umask(n); |
| 3352 | } |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 3353 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3354 | } |
| 3355 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3356 | static int doexec(struct op *t) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3357 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3358 | int i; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3359 | jmp_buf ex; |
| 3360 | xint *ofail; |
| 3361 | |
| 3362 | t->ioact = NULL; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3363 | for (i = 0; (t->words[i] = t->words[i + 1]) != NULL; i++); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3364 | if (i == 0) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 3365 | return 1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3366 | execflg = 1; |
| 3367 | ofail = failpt; |
| 3368 | if (setjmp(failpt = ex) == 0) |
| 3369 | execute(t, NOPIPE, NOPIPE, FEXEC); |
| 3370 | failpt = ofail; |
| 3371 | execflg = 0; |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 3372 | return 1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3373 | } |
| 3374 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 3375 | static int dodot(struct op *t) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3376 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3377 | int i; |
| 3378 | char *sp, *tp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3379 | char *cp; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3380 | int maltmp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3381 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 3382 | DBGPRINTF(("DODOT: enter, t=%p, tleft %p, tright %p, e.linep is %s\n", t, t->left, t->right, ((e.linep == NULL) ? "NULL" : e.linep))); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3383 | |
| 3384 | if ((cp = t->words[1]) == NULL) { |
| 3385 | DBGPRINTF(("DODOT: bad args, ret 0\n")); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 3386 | return 0; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3387 | } else { |
| 3388 | DBGPRINTF(("DODOT: cp is %s\n", cp)); |
| 3389 | } |
| 3390 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3391 | sp = any('/', cp) ? ":" : path->value; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3392 | |
| 3393 | DBGPRINTF(("DODOT: sp is %s, e.linep is %s\n", |
| 3394 | ((sp == NULL) ? "NULL" : sp), |
| 3395 | ((e.linep == NULL) ? "NULL" : e.linep))); |
| 3396 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3397 | while (*sp) { |
| 3398 | tp = e.linep; |
| 3399 | while (*sp && (*tp = *sp++) != ':') |
| 3400 | tp++; |
| 3401 | if (tp != e.linep) |
| 3402 | *tp++ = '/'; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3403 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3404 | for (i = 0; (*tp++ = cp[i++]) != '\0';); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3405 | |
| 3406 | /* Original code */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3407 | if ((i = open(e.linep, 0)) >= 0) { |
| 3408 | exstat = 0; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3409 | maltmp = remap(i); |
| 3410 | DBGPRINTF(("DODOT: remap=%d, exstat=%d, e.iofd %d, i %d, e.linep is %s\n", maltmp, exstat, e.iofd, i, e.linep)); |
| 3411 | |
| 3412 | next(maltmp); /* Basically a PUSHIO */ |
| 3413 | |
| 3414 | DBGPRINTF(("DODOT: returning exstat=%d\n", exstat)); |
| 3415 | |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3416 | return exstat; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3417 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3418 | |
| 3419 | } /* While */ |
| 3420 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3421 | prs(cp); |
| 3422 | err(": not found"); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3423 | |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 3424 | return -1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3425 | } |
| 3426 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 3427 | static int dowait(struct op *t) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3428 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3429 | int i; |
| 3430 | char *cp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3431 | |
| 3432 | if ((cp = t->words[1]) != NULL) { |
| 3433 | i = getn(cp); |
| 3434 | if (i == 0) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 3435 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3436 | } else |
| 3437 | i = -1; |
| 3438 | setstatus(waitfor(i, 1)); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 3439 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3440 | } |
| 3441 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 3442 | static int doread(struct op *t) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3443 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3444 | char *cp, **wp; |
| 3445 | int nb = 0; |
| 3446 | int nl = 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3447 | |
| 3448 | if (t->words[1] == NULL) { |
| 3449 | err("Usage: read name ..."); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 3450 | return 1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3451 | } |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3452 | for (wp = t->words + 1; *wp; wp++) { |
| 3453 | for (cp = e.linep; !nl && cp < elinep - 1; cp++) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3454 | if ((nb = read(0, cp, sizeof(*cp))) != sizeof(*cp) || |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3455 | (nl = (*cp == '\n')) || (wp[1] && any(*cp, ifs->value))) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3456 | break; |
| 3457 | *cp = 0; |
| 3458 | if (nb <= 0) |
| 3459 | break; |
| 3460 | setval(lookup(*wp), e.linep); |
| 3461 | } |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3462 | return nb <= 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3463 | } |
| 3464 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3465 | static int doeval(struct op *t) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3466 | { |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3467 | return RUN(awordlist, t->words + 1, wdchar); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3468 | } |
| 3469 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3470 | static int dotrap(struct op *t) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3471 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3472 | int n, i; |
| 3473 | int resetsig; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3474 | |
| 3475 | if (t->words[1] == NULL) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3476 | for (i = 0; i <= _NSIG; i++) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3477 | if (trap[i]) { |
| 3478 | prn(i); |
| 3479 | prs(": "); |
| 3480 | prs(trap[i]); |
| 3481 | prs("\n"); |
| 3482 | } |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 3483 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3484 | } |
| 3485 | resetsig = isdigit(*t->words[1]); |
| 3486 | for (i = resetsig ? 1 : 2; t->words[i] != NULL; ++i) { |
| 3487 | n = getsig(t->words[i]); |
| 3488 | freecell(trap[n]); |
| 3489 | trap[n] = 0; |
| 3490 | if (!resetsig) { |
| 3491 | if (*t->words[1] != '\0') { |
| 3492 | trap[n] = strsave(t->words[1], 0); |
| 3493 | setsig(n, sig); |
| 3494 | } else |
| 3495 | setsig(n, SIG_IGN); |
| 3496 | } else { |
| 3497 | if (interactive) |
| 3498 | if (n == SIGINT) |
| 3499 | setsig(n, onintr); |
| 3500 | else |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3501 | setsig(n, n == SIGQUIT ? SIG_IGN : SIG_DFL); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3502 | else |
| 3503 | setsig(n, SIG_DFL); |
| 3504 | } |
| 3505 | } |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 3506 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3507 | } |
| 3508 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 3509 | static int getsig(char *s) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3510 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3511 | int n; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3512 | |
| 3513 | if ((n = getn(s)) < 0 || n > _NSIG) { |
| 3514 | err("trap: bad signal number"); |
| 3515 | n = 0; |
| 3516 | } |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3517 | return n; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3518 | } |
| 3519 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3520 | static void setsig(int n, sighandler_t f) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3521 | { |
| 3522 | if (n == 0) |
| 3523 | return; |
| 3524 | if (signal(n, SIG_IGN) != SIG_IGN || ourtrap[n]) { |
| 3525 | ourtrap[n] = 1; |
| 3526 | signal(n, f); |
| 3527 | } |
| 3528 | } |
| 3529 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 3530 | static int getn(char *as) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3531 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3532 | char *s; |
| 3533 | int n, m; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3534 | |
| 3535 | s = as; |
| 3536 | m = 1; |
| 3537 | if (*s == '-') { |
| 3538 | m = -1; |
| 3539 | s++; |
| 3540 | } |
| 3541 | for (n = 0; isdigit(*s); s++) |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3542 | n = (n * 10) + (*s - '0'); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3543 | if (*s) { |
| 3544 | prs(as); |
| 3545 | err(": bad number"); |
| 3546 | } |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3547 | return n * m; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3548 | } |
| 3549 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 3550 | static int dobreak(struct op *t) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3551 | { |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3552 | return brkcontin(t->words[1], 1); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3553 | } |
| 3554 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 3555 | static int docontinue(struct op *t) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3556 | { |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3557 | return brkcontin(t->words[1], 0); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3558 | } |
| 3559 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3560 | static int brkcontin(char *cp, int val) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3561 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3562 | struct brkcon *bc; |
| 3563 | int nl; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3564 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3565 | nl = cp == NULL ? 1 : getn(cp); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3566 | if (nl <= 0) |
| 3567 | nl = 999; |
| 3568 | do { |
| 3569 | if ((bc = brklist) == NULL) |
| 3570 | break; |
| 3571 | brklist = bc->nextlev; |
| 3572 | } while (--nl); |
| 3573 | if (nl) { |
| 3574 | err("bad break/continue level"); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 3575 | return 1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3576 | } |
| 3577 | isbreak = val; |
| 3578 | longjmp(bc->brkpt, 1); |
| 3579 | /* NOTREACHED */ |
| 3580 | } |
| 3581 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 3582 | static int doexit(struct op *t) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3583 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3584 | char *cp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3585 | |
| 3586 | execflg = 0; |
| 3587 | if ((cp = t->words[1]) != NULL) |
| 3588 | setstatus(getn(cp)); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3589 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 3590 | DBGPRINTF(("DOEXIT: calling leave(), t=%p\n", t)); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3591 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3592 | leave(); |
| 3593 | /* NOTREACHED */ |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 3594 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3595 | } |
| 3596 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 3597 | static int doexport(struct op *t) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3598 | { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3599 | rdexp(t->words + 1, export, EXPORT); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 3600 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3601 | } |
| 3602 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 3603 | static int doreadonly(struct op *t) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3604 | { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3605 | rdexp(t->words + 1, ronly, RONLY); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 3606 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3607 | } |
| 3608 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3609 | static void rdexp(char **wp, void (*f) (struct var *), int key) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3610 | { |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 3611 | DBGPRINTF6(("RDEXP: enter, wp=%p, func=%p, key=%d\n", wp, f, key)); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3612 | DBGPRINTF6(("RDEXP: *wp=%s\n", *wp)); |
| 3613 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3614 | if (*wp != NULL) { |
Matt Kraai | f69bfc7 | 2001-07-12 19:39:59 +0000 | [diff] [blame] | 3615 | for (; *wp != NULL; wp++) { |
| 3616 | if (isassign(*wp)) { |
| 3617 | char *cp; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3618 | |
Matt Kraai | f69bfc7 | 2001-07-12 19:39:59 +0000 | [diff] [blame] | 3619 | assign(*wp, COPYV); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3620 | for (cp = *wp; *cp != '='; cp++); |
Matt Kraai | f69bfc7 | 2001-07-12 19:39:59 +0000 | [diff] [blame] | 3621 | *cp = '\0'; |
| 3622 | } |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3623 | if (checkname(*wp)) |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3624 | (*f) (lookup(*wp)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3625 | else |
| 3626 | badid(*wp); |
Matt Kraai | f69bfc7 | 2001-07-12 19:39:59 +0000 | [diff] [blame] | 3627 | } |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3628 | } else |
| 3629 | putvlist(key, 1); |
| 3630 | } |
| 3631 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3632 | static void badid(char *s) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3633 | { |
| 3634 | prs(s); |
| 3635 | err(": bad identifier"); |
| 3636 | } |
| 3637 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3638 | static int doset(struct op *t) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3639 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3640 | struct var *vp; |
| 3641 | char *cp; |
| 3642 | int n; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3643 | |
| 3644 | if ((cp = t->words[1]) == NULL) { |
| 3645 | for (vp = vlist; vp; vp = vp->next) |
| 3646 | varput(vp->name, 1); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 3647 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3648 | } |
| 3649 | if (*cp == '-') { |
| 3650 | /* bad: t->words++; */ |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3651 | for (n = 0; (t->words[n] = t->words[n + 1]) != NULL; n++); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3652 | if (*++cp == 0) |
| 3653 | flag['x'] = flag['v'] = 0; |
| 3654 | else |
| 3655 | for (; *cp; cp++) |
| 3656 | switch (*cp) { |
| 3657 | case 'e': |
| 3658 | if (!interactive) |
| 3659 | flag['e']++; |
| 3660 | break; |
| 3661 | |
| 3662 | default: |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3663 | if (*cp >= 'a' && *cp <= 'z') |
| 3664 | flag[(int) *cp]++; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3665 | break; |
| 3666 | } |
| 3667 | setdash(); |
| 3668 | } |
| 3669 | if (t->words[1]) { |
| 3670 | t->words[0] = dolv[0]; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3671 | for (n = 1; t->words[n]; n++) |
| 3672 | setarea((char *) t->words[n], 0); |
| 3673 | dolc = n - 1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3674 | dolv = t->words; |
| 3675 | setval(lookup("#"), putn(dolc)); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3676 | setarea((char *) (dolv - 1), 0); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3677 | } |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 3678 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3679 | } |
| 3680 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3681 | static void varput(char *s, int out) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3682 | { |
Matt Kraai | 69edfec | 2001-08-06 14:14:18 +0000 | [diff] [blame] | 3683 | if (isalnum(*s) || *s == '_') { |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3684 | write(out, s, strlen(s)); |
| 3685 | write(out, "\n", 1); |
| 3686 | } |
| 3687 | } |
| 3688 | |
| 3689 | |
| 3690 | /* |
| 3691 | * Copyright (c) 1999 Herbert Xu <herbert@debian.org> |
| 3692 | * This file contains code for the times builtin. |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3693 | */ |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3694 | static int dotimes(struct op *t) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3695 | { |
| 3696 | struct tms buf; |
| 3697 | long int clk_tck = sysconf(_SC_CLK_TCK); |
| 3698 | |
| 3699 | times(&buf); |
| 3700 | printf("%dm%fs %dm%fs\n%dm%fs %dm%fs\n", |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3701 | (int) (buf.tms_utime / clk_tck / 60), |
| 3702 | ((double) buf.tms_utime) / clk_tck, |
| 3703 | (int) (buf.tms_stime / clk_tck / 60), |
| 3704 | ((double) buf.tms_stime) / clk_tck, |
| 3705 | (int) (buf.tms_cutime / clk_tck / 60), |
| 3706 | ((double) buf.tms_cutime) / clk_tck, |
| 3707 | (int) (buf.tms_cstime / clk_tck / 60), |
| 3708 | ((double) buf.tms_cstime) / clk_tck); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3709 | return 0; |
| 3710 | } |
| 3711 | |
| 3712 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3713 | static int (*inbuilt(char *s)) (struct op *) { |
Eric Andersen | 1c03923 | 2001-07-07 00:05:55 +0000 | [diff] [blame] | 3714 | const struct builtincmd *bp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3715 | |
Eric Andersen | 1c03923 | 2001-07-07 00:05:55 +0000 | [diff] [blame] | 3716 | for (bp = builtincmds; bp->name != NULL; bp++) |
| 3717 | if (strcmp(bp->name, s) == 0) |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3718 | return bp->builtinfunc; |
Eric Andersen | 1c03923 | 2001-07-07 00:05:55 +0000 | [diff] [blame] | 3719 | |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3720 | return NULL; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3721 | } |
| 3722 | |
| 3723 | /* -------- eval.c -------- */ |
| 3724 | |
| 3725 | /* |
| 3726 | * ${} |
| 3727 | * `command` |
| 3728 | * blank interpretation |
| 3729 | * quoting |
| 3730 | * glob |
| 3731 | */ |
| 3732 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3733 | static char **eval(char **ap, int f) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3734 | { |
| 3735 | struct wdblock *wb; |
| 3736 | char **wp; |
| 3737 | char **wf; |
| 3738 | jmp_buf ev; |
| 3739 | |
| 3740 | #if __GNUC__ |
| 3741 | /* Avoid longjmp clobbering */ |
| 3742 | (void) ℘ |
| 3743 | (void) ≈ |
| 3744 | #endif |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3745 | |
| 3746 | DBGPRINTF4(("EVAL: enter, f=%d\n", f)); |
| 3747 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3748 | wp = NULL; |
| 3749 | wb = NULL; |
| 3750 | wf = NULL; |
| 3751 | if (newenv(setjmp(errpt = ev)) == 0) { |
| 3752 | while (*ap && isassign(*ap)) |
| 3753 | expand(*ap++, &wb, f & ~DOGLOB); |
| 3754 | if (flag['k']) { |
| 3755 | for (wf = ap; *wf; wf++) { |
| 3756 | if (isassign(*wf)) |
| 3757 | expand(*wf, &wb, f & ~DOGLOB); |
| 3758 | } |
| 3759 | } |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3760 | for (wb = addword((char *) 0, wb); *ap; ap++) { |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3761 | if (!flag['k'] || !isassign(*ap)) |
| 3762 | expand(*ap, &wb, f & ~DOKEY); |
| 3763 | } |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3764 | wb = addword((char *) 0, wb); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3765 | wp = getwords(wb); |
| 3766 | quitenv(); |
| 3767 | } else |
| 3768 | gflg = 1; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3769 | |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3770 | return gflg ? (char **) NULL : wp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3771 | } |
| 3772 | |
| 3773 | /* |
| 3774 | * Make the exported environment from the exported |
| 3775 | * names in the dictionary. Keyword assignments |
| 3776 | * will already have been done. |
| 3777 | */ |
Eric Andersen | fd7a4c8 | 2004-09-02 23:13:10 +0000 | [diff] [blame] | 3778 | static char **makenv(int all, struct wdblock *wb) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3779 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3780 | struct var *vp; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3781 | |
| 3782 | DBGPRINTF5(("MAKENV: enter, all=%d\n", all)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3783 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3784 | for (vp = vlist; vp; vp = vp->next) |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3785 | if (all || vp->status & EXPORT) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3786 | wb = addword(vp->name, wb); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3787 | wb = addword((char *) 0, wb); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3788 | return getwords(wb); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3789 | } |
| 3790 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3791 | static char *evalstr(char *cp, int f) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3792 | { |
| 3793 | struct wdblock *wb; |
| 3794 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 3795 | DBGPRINTF6(("EVALSTR: enter, cp=%p, f=%d\n", cp, f)); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3796 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3797 | wb = NULL; |
| 3798 | if (expand(cp, &wb, f)) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3799 | if (wb == NULL || wb->w_nword == 0 |
| 3800 | || (cp = wb->w_words[0]) == NULL) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3801 | cp = ""; |
| 3802 | DELETE(wb); |
| 3803 | } else |
| 3804 | cp = NULL; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3805 | return cp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3806 | } |
| 3807 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3808 | static int expand(char *cp, struct wdblock **wbp, int f) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3809 | { |
| 3810 | jmp_buf ev; |
| 3811 | |
| 3812 | #if __GNUC__ |
| 3813 | /* Avoid longjmp clobbering */ |
| 3814 | (void) &cp; |
| 3815 | #endif |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3816 | |
| 3817 | DBGPRINTF3(("EXPAND: enter, f=%d\n", f)); |
| 3818 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3819 | gflg = 0; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3820 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3821 | if (cp == NULL) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 3822 | return 0; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3823 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3824 | if (!anys("$`'\"", cp) && |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3825 | !anys(ifs->value, cp) && ((f & DOGLOB) == 0 || !anys("[*?", cp))) { |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3826 | cp = strsave(cp, areanum); |
| 3827 | if (f & DOTRIM) |
| 3828 | unquote(cp); |
| 3829 | *wbp = addword(cp, *wbp); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 3830 | return 1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3831 | } |
| 3832 | if (newenv(setjmp(errpt = ev)) == 0) { |
| 3833 | PUSHIO(aword, cp, strchar); |
| 3834 | e.iobase = e.iop; |
| 3835 | while ((cp = blank(f)) && gflg == 0) { |
| 3836 | e.linep = cp; |
| 3837 | cp = strsave(cp, areanum); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3838 | if ((f & DOGLOB) == 0) { |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3839 | if (f & DOTRIM) |
| 3840 | unquote(cp); |
| 3841 | *wbp = addword(cp, *wbp); |
| 3842 | } else |
| 3843 | *wbp = glob(cp, *wbp); |
| 3844 | } |
| 3845 | quitenv(); |
| 3846 | } else |
| 3847 | gflg = 1; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3848 | return gflg == 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3849 | } |
| 3850 | |
| 3851 | /* |
| 3852 | * Blank interpretation and quoting |
| 3853 | */ |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 3854 | static char *blank(int f) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3855 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3856 | int c, c1; |
| 3857 | char *sp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3858 | int scanequals, foundequals; |
| 3859 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3860 | DBGPRINTF3(("BLANK: enter, f=%d\n", f)); |
| 3861 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3862 | sp = e.linep; |
| 3863 | scanequals = f & DOKEY; |
| 3864 | foundequals = 0; |
| 3865 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3866 | loop: |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3867 | switch (c = subgetc('"', foundequals)) { |
| 3868 | case 0: |
| 3869 | if (sp == e.linep) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 3870 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3871 | *e.linep++ = 0; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3872 | return sp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3873 | |
| 3874 | default: |
| 3875 | if (f & DOBLANK && any(c, ifs->value)) |
| 3876 | goto loop; |
| 3877 | break; |
| 3878 | |
| 3879 | case '"': |
| 3880 | case '\'': |
| 3881 | scanequals = 0; |
| 3882 | if (INSUB()) |
| 3883 | break; |
| 3884 | for (c1 = c; (c = subgetc(c1, 1)) != c1;) { |
| 3885 | if (c == 0) |
| 3886 | break; |
| 3887 | if (c == '\'' || !any(c, "$`\"")) |
| 3888 | c |= QUOTE; |
| 3889 | *e.linep++ = c; |
| 3890 | } |
| 3891 | c = 0; |
| 3892 | } |
| 3893 | unget(c); |
Matt Kraai | 69edfec | 2001-08-06 14:14:18 +0000 | [diff] [blame] | 3894 | if (!isalpha(c) && c != '_') |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3895 | scanequals = 0; |
| 3896 | for (;;) { |
| 3897 | c = subgetc('"', foundequals); |
| 3898 | if (c == 0 || |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3899 | f & (DOBLANK && any(c, ifs->value)) || |
| 3900 | (!INSUB() && any(c, "\"'"))) { |
| 3901 | scanequals = 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3902 | unget(c); |
| 3903 | if (any(c, "\"'")) |
| 3904 | goto loop; |
| 3905 | break; |
| 3906 | } |
| 3907 | if (scanequals) { |
| 3908 | if (c == '=') { |
| 3909 | foundequals = 1; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3910 | scanequals = 0; |
| 3911 | } else if (!isalnum(c) && c != '_') |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3912 | scanequals = 0; |
| 3913 | } |
| 3914 | *e.linep++ = c; |
| 3915 | } |
| 3916 | *e.linep++ = 0; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3917 | return sp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3918 | } |
| 3919 | |
| 3920 | /* |
| 3921 | * Get characters, substituting for ` and $ |
| 3922 | */ |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3923 | static int subgetc(char ec, int quoted) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3924 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3925 | char c; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3926 | |
| 3927 | DBGPRINTF3(("SUBGETC: enter, quoted=%d\n", quoted)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3928 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3929 | again: |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3930 | c = my_getc(ec); |
| 3931 | if (!INSUB() && ec != '\'') { |
| 3932 | if (c == '`') { |
| 3933 | if (grave(quoted) == 0) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 3934 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3935 | e.iop->task = XGRAVE; |
| 3936 | goto again; |
| 3937 | } |
| 3938 | if (c == '$' && (c = dollar(quoted)) == 0) { |
| 3939 | e.iop->task = XDOLL; |
| 3940 | goto again; |
| 3941 | } |
| 3942 | } |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3943 | return c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3944 | } |
| 3945 | |
| 3946 | /* |
| 3947 | * Prepare to generate the string returned by ${} substitution. |
| 3948 | */ |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 3949 | static int dollar(int quoted) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3950 | { |
| 3951 | int otask; |
| 3952 | struct io *oiop; |
| 3953 | char *dolp; |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 3954 | char *s, c, *cp = NULL; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3955 | struct var *vp; |
| 3956 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3957 | DBGPRINTF3(("DOLLAR: enter, quoted=%d\n", quoted)); |
| 3958 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3959 | c = readc(); |
| 3960 | s = e.linep; |
| 3961 | if (c != '{') { |
| 3962 | *e.linep++ = c; |
Matt Kraai | 69edfec | 2001-08-06 14:14:18 +0000 | [diff] [blame] | 3963 | if (isalpha(c) || c == '_') { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3964 | while ((c = readc()) != 0 && (isalnum(c) || c == '_')) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3965 | if (e.linep < elinep) |
| 3966 | *e.linep++ = c; |
| 3967 | unget(c); |
| 3968 | } |
| 3969 | c = 0; |
| 3970 | } else { |
| 3971 | oiop = e.iop; |
| 3972 | otask = e.iop->task; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 3973 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3974 | e.iop->task = XOTHER; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3975 | while ((c = subgetc('"', 0)) != 0 && c != '}' && c != '\n') |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3976 | if (e.linep < elinep) |
| 3977 | *e.linep++ = c; |
| 3978 | if (oiop == e.iop) |
| 3979 | e.iop->task = otask; |
| 3980 | if (c != '}') { |
| 3981 | err("unclosed ${"); |
| 3982 | gflg++; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 3983 | return c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3984 | } |
| 3985 | } |
| 3986 | if (e.linep >= elinep) { |
| 3987 | err("string in ${} too long"); |
| 3988 | gflg++; |
| 3989 | e.linep -= 10; |
| 3990 | } |
| 3991 | *e.linep = 0; |
| 3992 | if (*s) |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 3993 | for (cp = s + 1; *cp; cp++) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 3994 | if (any(*cp, "=-+?")) { |
| 3995 | c = *cp; |
| 3996 | *cp++ = 0; |
| 3997 | break; |
| 3998 | } |
| 3999 | if (s[1] == 0 && (*s == '*' || *s == '@')) { |
| 4000 | if (dolc > 1) { |
| 4001 | /* currently this does not distinguish $* and $@ */ |
| 4002 | /* should check dollar */ |
| 4003 | e.linep = s; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4004 | PUSHIO(awordlist, dolv + 1, dolchar); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 4005 | return 0; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4006 | } else { /* trap the nasty ${=} */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4007 | s[0] = '1'; |
| 4008 | s[1] = 0; |
| 4009 | } |
| 4010 | } |
| 4011 | vp = lookup(s); |
| 4012 | if ((dolp = vp->value) == null) { |
| 4013 | switch (c) { |
| 4014 | case '=': |
| 4015 | if (isdigit(*s)) { |
| 4016 | err("cannot use ${...=...} with $n"); |
| 4017 | gflg++; |
| 4018 | break; |
| 4019 | } |
| 4020 | setval(vp, cp); |
| 4021 | dolp = vp->value; |
| 4022 | break; |
| 4023 | |
| 4024 | case '-': |
| 4025 | dolp = strsave(cp, areanum); |
| 4026 | break; |
| 4027 | |
| 4028 | case '?': |
| 4029 | if (*cp == 0) { |
| 4030 | prs("missing value for "); |
| 4031 | err(s); |
| 4032 | } else |
| 4033 | err(cp); |
| 4034 | gflg++; |
| 4035 | break; |
| 4036 | } |
| 4037 | } else if (c == '+') |
| 4038 | dolp = strsave(cp, areanum); |
| 4039 | if (flag['u'] && dolp == null) { |
| 4040 | prs("unset variable: "); |
| 4041 | err(s); |
| 4042 | gflg++; |
| 4043 | } |
| 4044 | e.linep = s; |
| 4045 | PUSHIO(aword, dolp, quoted ? qstrchar : strchar); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 4046 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4047 | } |
| 4048 | |
| 4049 | /* |
| 4050 | * Run the command in `...` and read its output. |
| 4051 | */ |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 4052 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 4053 | static int grave(int quoted) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4054 | { |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4055 | char *cp; |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4056 | int i; |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 4057 | int j; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4058 | int pf[2]; |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 4059 | static char child_cmd[LINELIM]; |
| 4060 | char *src; |
| 4061 | char *dest; |
| 4062 | int count; |
| 4063 | int ignore; |
| 4064 | int ignore_once; |
| 4065 | char *argument_list[4]; |
Eric Andersen | fd7a4c8 | 2004-09-02 23:13:10 +0000 | [diff] [blame] | 4066 | struct wdblock *wb = NULL; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4067 | |
| 4068 | #if __GNUC__ |
| 4069 | /* Avoid longjmp clobbering */ |
| 4070 | (void) &cp; |
| 4071 | #endif |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 4072 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4073 | for (cp = e.iop->argp->aword; *cp != '`'; cp++) |
| 4074 | if (*cp == 0) { |
| 4075 | err("no closing `"); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 4076 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4077 | } |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 4078 | |
| 4079 | /* string copy with dollar expansion */ |
| 4080 | src = e.iop->argp->aword; |
| 4081 | dest = child_cmd; |
| 4082 | count = 0; |
| 4083 | ignore = 0; |
| 4084 | ignore_once = 0; |
| 4085 | while ((*src != '`') && (count < LINELIM)) { |
| 4086 | if (*src == '\'') |
| 4087 | ignore = !ignore; |
| 4088 | if (*src == '\\') |
| 4089 | ignore_once = 1; |
| 4090 | if (*src == '$' && !ignore && !ignore_once) { |
| 4091 | struct var *vp; |
| 4092 | char var_name[LINELIM]; |
| 4093 | char alt_value[LINELIM]; |
| 4094 | int var_index = 0; |
| 4095 | int alt_index = 0; |
| 4096 | char operator = 0; |
| 4097 | int braces = 0; |
| 4098 | char *value; |
| 4099 | |
| 4100 | src++; |
| 4101 | if (*src == '{') { |
| 4102 | braces = 1; |
| 4103 | src++; |
| 4104 | } |
| 4105 | |
| 4106 | var_name[var_index++] = *src++; |
Paul Fox | 54690dc | 2005-07-20 18:33:12 +0000 | [diff] [blame] | 4107 | while (isalnum(*src) || *src=='_') |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 4108 | var_name[var_index++] = *src++; |
| 4109 | var_name[var_index] = 0; |
| 4110 | |
| 4111 | if (braces) { |
| 4112 | switch (*src) { |
| 4113 | case '}': |
| 4114 | break; |
| 4115 | case '-': |
| 4116 | case '=': |
| 4117 | case '+': |
| 4118 | case '?': |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4119 | operator = * src; |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 4120 | break; |
| 4121 | default: |
| 4122 | err("unclosed ${\n"); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 4123 | return 0; |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 4124 | } |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 4125 | if (operator) { |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 4126 | src++; |
| 4127 | while (*src && (*src != '}')) { |
| 4128 | alt_value[alt_index++] = *src++; |
| 4129 | } |
| 4130 | alt_value[alt_index] = 0; |
| 4131 | if (*src != '}') { |
| 4132 | err("unclosed ${\n"); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 4133 | return 0; |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 4134 | } |
| 4135 | } |
| 4136 | src++; |
| 4137 | } |
| 4138 | |
Eric Andersen | fd7a4c8 | 2004-09-02 23:13:10 +0000 | [diff] [blame] | 4139 | if (isalpha(*var_name)) { |
| 4140 | /* let subshell handle it instead */ |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 4141 | |
Eric Andersen | fd7a4c8 | 2004-09-02 23:13:10 +0000 | [diff] [blame] | 4142 | char *namep = var_name; |
| 4143 | |
| 4144 | *dest++ = '$'; |
| 4145 | if (braces) |
| 4146 | *dest++ = '{'; |
| 4147 | while (*namep) |
| 4148 | *dest++ = *namep++; |
| 4149 | if (operator) { |
| 4150 | char *altp = alt_value; |
| 4151 | *dest++ = operator; |
| 4152 | while (*altp) |
| 4153 | *dest++ = *altp++; |
| 4154 | } |
| 4155 | if (braces) |
| 4156 | *dest++ = '}'; |
| 4157 | |
| 4158 | wb = addword(lookup(var_name)->name, wb); |
| 4159 | } else { |
| 4160 | /* expand */ |
| 4161 | |
| 4162 | vp = lookup(var_name); |
| 4163 | if (vp->value != null) |
| 4164 | value = (operator == '+') ? |
| 4165 | alt_value : vp->value; |
| 4166 | else if (operator == '?') { |
| 4167 | err(alt_value); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 4168 | return 0; |
Eric Andersen | fd7a4c8 | 2004-09-02 23:13:10 +0000 | [diff] [blame] | 4169 | } else if (alt_index && (operator != '+')) { |
| 4170 | value = alt_value; |
| 4171 | if (operator == '=') |
| 4172 | setval(vp, value); |
| 4173 | } else |
| 4174 | continue; |
| 4175 | |
| 4176 | while (*value && (count < LINELIM)) { |
| 4177 | *dest++ = *value++; |
| 4178 | count++; |
| 4179 | } |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 4180 | } |
| 4181 | } else { |
| 4182 | *dest++ = *src++; |
| 4183 | count++; |
| 4184 | ignore_once = 0; |
| 4185 | } |
| 4186 | } |
| 4187 | *dest = '\0'; |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 4188 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4189 | if (openpipe(pf) < 0) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 4190 | return 0; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4191 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4192 | while ((i = vfork()) == -1 && errno == EAGAIN); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4193 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 4194 | DBGPRINTF3(("GRAVE: i is %p\n", io)); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4195 | |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 4196 | if (i < 0) { |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4197 | closepipe(pf); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4198 | err((char *) bb_msg_memory_exhausted); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 4199 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4200 | } |
| 4201 | if (i != 0) { |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 4202 | waitpid(i, NULL, 0); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4203 | e.iop->argp->aword = ++cp; |
| 4204 | close(pf[1]); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4205 | PUSHIO(afile, remap(pf[0]), |
| 4206 | (int (*)(struct ioarg *)) ((quoted) ? qgravechar : |
| 4207 | gravechar)); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 4208 | return 1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4209 | } |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4210 | /* allow trapped signals */ |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 4211 | /* XXX - Maybe this signal stuff should go as well? */ |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4212 | for (j = 0; j <= _NSIG; j++) |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 4213 | if (ourtrap[j] && signal(j, SIG_IGN) != SIG_IGN) |
| 4214 | signal(j, SIG_DFL); |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 4215 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4216 | dup2(pf[1], 1); |
| 4217 | closepipe(pf); |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 4218 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4219 | argument_list[0] = (char *) DEFAULT_SHELL; |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 4220 | argument_list[1] = "-c"; |
| 4221 | argument_list[2] = child_cmd; |
| 4222 | argument_list[3] = 0; |
| 4223 | |
Eric Andersen | fd7a4c8 | 2004-09-02 23:13:10 +0000 | [diff] [blame] | 4224 | cp = rexecve(argument_list[0], argument_list, makenv(1, wb)); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4225 | prs(argument_list[0]); |
| 4226 | prs(": "); |
| 4227 | err(cp); |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 4228 | _exit(1); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4229 | } |
| 4230 | |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 4231 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4232 | static char *unquote(char *as) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4233 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4234 | char *s; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4235 | |
| 4236 | if ((s = as) != NULL) |
| 4237 | while (*s) |
| 4238 | *s++ &= ~QUOTE; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4239 | return as; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4240 | } |
| 4241 | |
| 4242 | /* -------- glob.c -------- */ |
| 4243 | |
| 4244 | /* |
| 4245 | * glob |
| 4246 | */ |
| 4247 | |
| 4248 | #define scopy(x) strsave((x), areanum) |
| 4249 | #define BLKSIZ 512 |
| 4250 | #define NDENT ((BLKSIZ+sizeof(struct dirent)-1)/sizeof(struct dirent)) |
| 4251 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4252 | static struct wdblock *cl, *nl; |
| 4253 | static char spcl[] = "[?*"; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4254 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 4255 | static struct wdblock *glob(char *cp, struct wdblock *wb) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4256 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4257 | int i; |
| 4258 | char *pp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4259 | |
| 4260 | if (cp == 0) |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4261 | return wb; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4262 | i = 0; |
| 4263 | for (pp = cp; *pp; pp++) |
| 4264 | if (any(*pp, spcl)) |
| 4265 | i++; |
| 4266 | else if (!any(*pp & ~QUOTE, spcl)) |
| 4267 | *pp &= ~QUOTE; |
| 4268 | if (i != 0) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4269 | for (cl = addword(scopy(cp), (struct wdblock *) 0); anyspcl(cl); |
| 4270 | cl = nl) { |
| 4271 | nl = newword(cl->w_nword * 2); |
| 4272 | for (i = 0; i < cl->w_nword; i++) { /* for each argument */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4273 | for (pp = cl->w_words[i]; *pp; pp++) |
| 4274 | if (any(*pp, spcl)) { |
| 4275 | globname(cl->w_words[i], pp); |
| 4276 | break; |
| 4277 | } |
| 4278 | if (*pp == '\0') |
| 4279 | nl = addword(scopy(cl->w_words[i]), nl); |
| 4280 | } |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4281 | for (i = 0; i < cl->w_nword; i++) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4282 | DELETE(cl->w_words[i]); |
| 4283 | DELETE(cl); |
| 4284 | } |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4285 | for (i = 0; i < cl->w_nword; i++) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4286 | unquote(cl->w_words[i]); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4287 | glob0((char *) cl->w_words, cl->w_nword, sizeof(char *), xstrcmp); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4288 | if (cl->w_nword) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4289 | for (i = 0; i < cl->w_nword; i++) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4290 | wb = addword(cl->w_words[i], wb); |
| 4291 | DELETE(cl); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4292 | return wb; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4293 | } |
| 4294 | } |
| 4295 | wb = addword(unquote(cp), wb); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4296 | return wb; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4297 | } |
| 4298 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4299 | static void globname(char *we, char *pp) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4300 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4301 | char *np, *cp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4302 | char *name, *gp, *dp; |
| 4303 | int k; |
| 4304 | DIR *dirp; |
| 4305 | struct dirent *de; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4306 | char dname[NAME_MAX + 1]; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4307 | struct stat dbuf; |
| 4308 | |
| 4309 | for (np = we; np != pp; pp--) |
| 4310 | if (pp[-1] == '/') |
| 4311 | break; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4312 | for (dp = cp = space((int) (pp - np) + 3); np < pp;) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4313 | *cp++ = *np++; |
| 4314 | *cp++ = '.'; |
| 4315 | *cp = '\0'; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4316 | for (gp = cp = space(strlen(pp) + 1); *np && *np != '/';) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4317 | *cp++ = *np++; |
| 4318 | *cp = '\0'; |
| 4319 | dirp = opendir(dp); |
| 4320 | if (dirp == 0) { |
| 4321 | DELETE(dp); |
| 4322 | DELETE(gp); |
| 4323 | return; |
| 4324 | } |
| 4325 | dname[NAME_MAX] = '\0'; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4326 | while ((de = readdir(dirp)) != NULL) { |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4327 | /* XXX Hmmm... What this could be? (abial) */ |
| 4328 | /* |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4329 | if (ent[j].d_ino == 0) |
| 4330 | continue; |
| 4331 | */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4332 | strncpy(dname, de->d_name, NAME_MAX); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4333 | if (dname[0] == '.') |
| 4334 | if (*gp != '.') |
| 4335 | continue; |
| 4336 | for (k = 0; k < NAME_MAX; k++) |
| 4337 | if (any(dname[k], spcl)) |
| 4338 | dname[k] |= QUOTE; |
| 4339 | if (gmatch(dname, gp)) { |
| 4340 | name = generate(we, pp, dname, np); |
| 4341 | if (*np && !anys(np, spcl)) { |
| 4342 | if (stat(name, &dbuf)) { |
| 4343 | DELETE(name); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4344 | continue; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4345 | } |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4346 | } |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4347 | nl = addword(name, nl); |
| 4348 | } |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4349 | } |
| 4350 | closedir(dirp); |
| 4351 | DELETE(dp); |
| 4352 | DELETE(gp); |
| 4353 | } |
| 4354 | |
| 4355 | /* |
| 4356 | * generate a pathname as below. |
| 4357 | * start..end1 / middle end |
| 4358 | * the slashes come for free |
| 4359 | */ |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4360 | static char *generate(char *start1, char *end1, char *middle, char *end) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4361 | { |
| 4362 | char *p; |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4363 | char *op, *xp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4364 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4365 | p = op = |
| 4366 | space((int) (end1 - start1) + strlen(middle) + strlen(end) + 2); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4367 | for (xp = start1; xp != end1;) |
| 4368 | *op++ = *xp++; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4369 | for (xp = middle; (*op++ = *xp++) != '\0';); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4370 | op--; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4371 | for (xp = end; (*op++ = *xp++) != '\0';); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4372 | return p; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4373 | } |
| 4374 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4375 | static int anyspcl(struct wdblock *wb) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4376 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4377 | int i; |
| 4378 | char **wd; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4379 | |
| 4380 | wd = wb->w_words; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4381 | for (i = 0; i < wb->w_nword; i++) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4382 | if (anys(spcl, *wd++)) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 4383 | return 1; |
| 4384 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4385 | } |
| 4386 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 4387 | static int xstrcmp(char *p1, char *p2) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4388 | { |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4389 | return strcmp(*(char **) p1, *(char **) p2); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4390 | } |
| 4391 | |
| 4392 | /* -------- word.c -------- */ |
| 4393 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4394 | static struct wdblock *newword(int nw) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4395 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4396 | struct wdblock *wb; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4397 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4398 | wb = (struct wdblock *) space(sizeof(*wb) + nw * sizeof(char *)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4399 | wb->w_bsize = nw; |
| 4400 | wb->w_nword = 0; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4401 | return wb; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4402 | } |
| 4403 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4404 | static struct wdblock *addword(char *wd, struct wdblock *wb) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4405 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4406 | struct wdblock *wb2; |
| 4407 | int nw; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4408 | |
| 4409 | if (wb == NULL) |
| 4410 | wb = newword(NSTART); |
| 4411 | if ((nw = wb->w_nword) >= wb->w_bsize) { |
| 4412 | wb2 = newword(nw * 2); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4413 | memcpy((char *) wb2->w_words, (char *) wb->w_words, |
| 4414 | nw * sizeof(char *)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4415 | wb2->w_nword = nw; |
| 4416 | DELETE(wb); |
| 4417 | wb = wb2; |
| 4418 | } |
| 4419 | wb->w_words[wb->w_nword++] = wd; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4420 | return wb; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4421 | } |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4422 | |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 4423 | static |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4424 | char **getwords(struct wdblock *wb) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4425 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4426 | char **wd; |
| 4427 | int nb; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4428 | |
| 4429 | if (wb == NULL) |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4430 | return NULL; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4431 | if (wb->w_nword == 0) { |
| 4432 | DELETE(wb); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4433 | return NULL; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4434 | } |
| 4435 | wd = (char **) space(nb = sizeof(*wd) * wb->w_nword); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4436 | memcpy((char *) wd, (char *) wb->w_words, nb); |
| 4437 | DELETE(wb); /* perhaps should done by caller */ |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4438 | return wd; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4439 | } |
| 4440 | |
"Vladimir N. Oleynik" | ac97317 | 2005-09-22 14:38:17 +0000 | [diff] [blame] | 4441 | static int (*func) (char *, char *); |
| 4442 | static int globv; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4443 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 4444 | static void glob0(char *a0, unsigned a1, int a2, int (*a3) (char *, char *)) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4445 | { |
| 4446 | func = a3; |
| 4447 | globv = a2; |
| 4448 | glob1(a0, a0 + a1 * a2); |
| 4449 | } |
| 4450 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 4451 | static void glob1(char *base, char *lim) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4452 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4453 | char *i, *j; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4454 | int v2; |
| 4455 | char *lptr, *hptr; |
| 4456 | int c; |
| 4457 | unsigned n; |
| 4458 | |
| 4459 | |
| 4460 | v2 = globv; |
| 4461 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4462 | top: |
| 4463 | if ((n = (int) (lim - base)) <= v2) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4464 | return; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4465 | n = v2 * (n / (2 * v2)); |
| 4466 | hptr = lptr = base + n; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4467 | i = base; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4468 | j = lim - v2; |
| 4469 | for (;;) { |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4470 | if (i < lptr) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4471 | if ((c = (*func) (i, lptr)) == 0) { |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4472 | glob2(i, lptr -= v2); |
| 4473 | continue; |
| 4474 | } |
| 4475 | if (c < 0) { |
| 4476 | i += v2; |
| 4477 | continue; |
| 4478 | } |
| 4479 | } |
| 4480 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4481 | begin: |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4482 | if (j > hptr) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4483 | if ((c = (*func) (hptr, j)) == 0) { |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4484 | glob2(hptr += v2, j); |
| 4485 | goto begin; |
| 4486 | } |
| 4487 | if (c > 0) { |
| 4488 | if (i == lptr) { |
| 4489 | glob3(i, hptr += v2, j); |
| 4490 | i = lptr += v2; |
| 4491 | goto begin; |
| 4492 | } |
| 4493 | glob2(i, j); |
| 4494 | j -= v2; |
| 4495 | i += v2; |
| 4496 | continue; |
| 4497 | } |
| 4498 | j -= v2; |
| 4499 | goto begin; |
| 4500 | } |
| 4501 | |
| 4502 | |
| 4503 | if (i == lptr) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4504 | if (lptr - base >= lim - hptr) { |
| 4505 | glob1(hptr + v2, lim); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4506 | lim = lptr; |
| 4507 | } else { |
| 4508 | glob1(base, lptr); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4509 | base = hptr + v2; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4510 | } |
| 4511 | goto top; |
| 4512 | } |
| 4513 | |
| 4514 | |
| 4515 | glob3(j, lptr -= v2, i); |
| 4516 | j = hptr -= v2; |
| 4517 | } |
| 4518 | } |
| 4519 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 4520 | static void glob2(char *i, char *j) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4521 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4522 | char *index1, *index2, c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4523 | int m; |
| 4524 | |
| 4525 | m = globv; |
| 4526 | index1 = i; |
| 4527 | index2 = j; |
| 4528 | do { |
| 4529 | c = *index1; |
| 4530 | *index1++ = *index2; |
| 4531 | *index2++ = c; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4532 | } while (--m); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4533 | } |
| 4534 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 4535 | static void glob3(char *i, char *j, char *k) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4536 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4537 | char *index1, *index2, *index3; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4538 | int c; |
| 4539 | int m; |
| 4540 | |
| 4541 | m = globv; |
| 4542 | index1 = i; |
| 4543 | index2 = j; |
| 4544 | index3 = k; |
| 4545 | do { |
| 4546 | c = *index1; |
| 4547 | *index1++ = *index3; |
| 4548 | *index3++ = *index2; |
| 4549 | *index2++ = c; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4550 | } while (--m); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4551 | } |
| 4552 | |
| 4553 | /* -------- io.c -------- */ |
| 4554 | |
| 4555 | /* |
| 4556 | * shell IO |
| 4557 | */ |
| 4558 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4559 | static int my_getc(int ec) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4560 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4561 | int c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4562 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4563 | if (e.linep > elinep) { |
| 4564 | while ((c = readc()) != '\n' && c); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4565 | err("input line too long"); |
| 4566 | gflg++; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4567 | return c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4568 | } |
| 4569 | c = readc(); |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 4570 | if ((ec != '\'') && (ec != '`') && (e.iop->task != XGRAVE)) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4571 | if (c == '\\') { |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4572 | c = readc(); |
| 4573 | if (c == '\n' && ec != '\"') |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4574 | return my_getc(ec); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4575 | c |= QUOTE; |
| 4576 | } |
| 4577 | } |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4578 | return c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4579 | } |
| 4580 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 4581 | static void unget(int c) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4582 | { |
| 4583 | if (e.iop >= e.iobase) |
| 4584 | e.iop->peekc = c; |
| 4585 | } |
| 4586 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 4587 | static int eofc(void) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4588 | { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4589 | return e.iop < e.iobase || (e.iop->peekc == 0 && e.iop->prev == 0); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4590 | } |
| 4591 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 4592 | static int readc(void) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4593 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4594 | int c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4595 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 4596 | RCPRINTF(("READC: e.iop %p, e.iobase %p\n", e.iop, e.iobase)); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4597 | |
| 4598 | for (; e.iop >= e.iobase; e.iop--) { |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 4599 | RCPRINTF(("READC: e.iop %p, peekc 0x%x\n", e.iop, e.iop->peekc)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4600 | if ((c = e.iop->peekc) != '\0') { |
| 4601 | e.iop->peekc = 0; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4602 | return c; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4603 | } else { |
| 4604 | if (e.iop->prev != 0) { |
| 4605 | if ((c = (*e.iop->iofn) (e.iop->argp, e.iop)) != '\0') { |
| 4606 | if (c == -1) { |
| 4607 | e.iop++; |
| 4608 | continue; |
| 4609 | } |
| 4610 | if (e.iop == iostack) |
| 4611 | ioecho(c); |
| 4612 | return (e.iop->prev = c); |
| 4613 | } else if (e.iop->task == XIO && e.iop->prev != '\n') { |
| 4614 | e.iop->prev = 0; |
| 4615 | if (e.iop == iostack) |
| 4616 | ioecho('\n'); |
| 4617 | return '\n'; |
| 4618 | } |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4619 | } |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4620 | if (e.iop->task == XIO) { |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4621 | if (multiline) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4622 | return e.iop->prev = 0; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4623 | } |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4624 | if (interactive && e.iop == iostack + 1) { |
| 4625 | #ifdef CONFIG_FEATURE_COMMAND_EDITING |
| 4626 | current_prompt = prompt->value; |
| 4627 | #else |
| 4628 | prs(prompt->value); |
| 4629 | #endif |
| 4630 | } |
| 4631 | } |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4632 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4633 | |
| 4634 | } /* FOR */ |
| 4635 | |
| 4636 | if (e.iop >= iostack) { |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 4637 | RCPRINTF(("READC: return 0, e.iop %p\n", e.iop)); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 4638 | return 0; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4639 | } |
| 4640 | |
| 4641 | DBGPRINTF(("READC: leave()...\n")); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4642 | leave(); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4643 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4644 | /* NOTREACHED */ |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 4645 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4646 | } |
| 4647 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 4648 | static void ioecho(char c) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4649 | { |
| 4650 | if (flag['v']) |
| 4651 | write(2, &c, sizeof c); |
| 4652 | } |
| 4653 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4654 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4655 | static void pushio(struct ioarg *argp, int (*fn) (struct ioarg *)) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4656 | { |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 4657 | DBGPRINTF(("PUSHIO: argp %p, argp->afid 0x%x, e.iop %p\n", argp, |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4658 | argp->afid, e.iop)); |
| 4659 | |
| 4660 | /* Set env ptr for io source to next array spot and check for array overflow */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4661 | if (++e.iop >= &iostack[NPUSH]) { |
| 4662 | e.iop--; |
| 4663 | err("Shell input nested too deeply"); |
| 4664 | gflg++; |
| 4665 | return; |
| 4666 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4667 | |
| 4668 | /* We did not overflow the NPUSH array spots so setup data structs */ |
| 4669 | |
| 4670 | e.iop->iofn = (int (*)(struct ioarg *, struct io *)) fn; /* Store data source func ptr */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4671 | |
| 4672 | if (argp->afid != AFID_NOBUF) |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4673 | e.iop->argp = argp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4674 | else { |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4675 | |
| 4676 | e.iop->argp = ioargstack + (e.iop - iostack); /* MAL - index into stack */ |
| 4677 | *e.iop->argp = *argp; /* copy data from temp area into stack spot */ |
| 4678 | |
| 4679 | /* MAL - mainbuf is for 1st data source (command line?) and all nested use a single shared buffer? */ |
| 4680 | |
| 4681 | if (e.iop == &iostack[0]) |
| 4682 | e.iop->argp->afbuf = &mainbuf; |
| 4683 | else |
| 4684 | e.iop->argp->afbuf = &sharedbuf; |
| 4685 | |
| 4686 | /* MAL - if not a termimal AND (commandline OR readable file) then give it a buffer id? */ |
| 4687 | /* This line appears to be active when running scripts from command line */ |
| 4688 | if ((isatty(e.iop->argp->afile) == 0) |
| 4689 | && (e.iop == &iostack[0] |
Denis Vlasenko | ea62077 | 2006-10-14 02:23:43 +0000 | [diff] [blame] | 4690 | || lseek(e.iop->argp->afile, 0L, SEEK_CUR) != -1)) { |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4691 | if (++bufid == AFID_NOBUF) /* counter rollover check, AFID_NOBUF = 11111111 */ |
| 4692 | bufid = AFID_ID; /* AFID_ID = 0 */ |
| 4693 | |
| 4694 | e.iop->argp->afid = bufid; /* assign buffer id */ |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4695 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4696 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 4697 | DBGPRINTF(("PUSHIO: iostack %p, e.iop %p, afbuf %p\n", |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4698 | iostack, e.iop, e.iop->argp->afbuf)); |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 4699 | DBGPRINTF(("PUSHIO: mbuf %p, sbuf %p, bid %d, e.iop %p\n", |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4700 | &mainbuf, &sharedbuf, bufid, e.iop)); |
| 4701 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4702 | } |
| 4703 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4704 | e.iop->prev = ~'\n'; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4705 | e.iop->peekc = 0; |
| 4706 | e.iop->xchar = 0; |
| 4707 | e.iop->nlcount = 0; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4708 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4709 | if (fn == filechar || fn == linechar) |
| 4710 | e.iop->task = XIO; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4711 | else if (fn == (int (*)(struct ioarg *)) gravechar |
| 4712 | || fn == (int (*)(struct ioarg *)) qgravechar) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4713 | e.iop->task = XGRAVE; |
| 4714 | else |
| 4715 | e.iop->task = XOTHER; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4716 | |
| 4717 | return; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4718 | } |
| 4719 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 4720 | static struct io *setbase(struct io *ip) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4721 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4722 | struct io *xp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4723 | |
| 4724 | xp = e.iobase; |
| 4725 | e.iobase = ip; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4726 | return xp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4727 | } |
| 4728 | |
| 4729 | /* |
| 4730 | * Input generating functions |
| 4731 | */ |
| 4732 | |
| 4733 | /* |
| 4734 | * Produce the characters of a string, then a newline, then EOF. |
| 4735 | */ |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4736 | static int nlchar(struct ioarg *ap) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4737 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4738 | int c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4739 | |
| 4740 | if (ap->aword == NULL) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 4741 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4742 | if ((c = *ap->aword++) == 0) { |
| 4743 | ap->aword = NULL; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4744 | return '\n'; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4745 | } |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4746 | return c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4747 | } |
| 4748 | |
| 4749 | /* |
| 4750 | * Given a list of words, produce the characters |
| 4751 | * in them, with a space after each word. |
| 4752 | */ |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4753 | static int wdchar(struct ioarg *ap) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4754 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4755 | char c; |
| 4756 | char **wl; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4757 | |
| 4758 | if ((wl = ap->awordlist) == NULL) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 4759 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4760 | if (*wl != NULL) { |
| 4761 | if ((c = *(*wl)++) != 0) |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4762 | return c & 0177; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4763 | ap->awordlist++; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4764 | return ' '; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4765 | } |
| 4766 | ap->awordlist = NULL; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4767 | return '\n'; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4768 | } |
| 4769 | |
| 4770 | /* |
| 4771 | * Return the characters of a list of words, |
| 4772 | * producing a space between them. |
| 4773 | */ |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4774 | static int dolchar(struct ioarg *ap) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4775 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4776 | char *wp; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4777 | |
| 4778 | if ((wp = *ap->awordlist++) != NULL) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4779 | PUSHIO(aword, wp, *ap->awordlist == NULL ? strchar : xxchar); |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 4780 | return -1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4781 | } |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 4782 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4783 | } |
| 4784 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4785 | static int xxchar(struct ioarg *ap) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4786 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4787 | int c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4788 | |
| 4789 | if (ap->aword == NULL) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 4790 | return 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4791 | if ((c = *ap->aword++) == '\0') { |
| 4792 | ap->aword = NULL; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4793 | return ' '; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4794 | } |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4795 | return c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4796 | } |
| 4797 | |
| 4798 | /* |
| 4799 | * Produce the characters from a single word (string). |
| 4800 | */ |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4801 | static int strchar(struct ioarg *ap) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4802 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4803 | int c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4804 | |
| 4805 | if (ap->aword == NULL || (c = *ap->aword++) == 0) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 4806 | return 0; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4807 | return c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4808 | } |
| 4809 | |
| 4810 | /* |
| 4811 | * Produce quoted characters from a single word (string). |
| 4812 | */ |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4813 | static int qstrchar(struct ioarg *ap) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4814 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4815 | int c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4816 | |
| 4817 | if (ap->aword == NULL || (c = *ap->aword++) == 0) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 4818 | return 0; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4819 | return c | QUOTE; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4820 | } |
| 4821 | |
| 4822 | /* |
| 4823 | * Return the characters from a file. |
| 4824 | */ |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4825 | static int filechar(struct ioarg *ap) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4826 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4827 | int i; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4828 | char c; |
| 4829 | struct iobuf *bp = ap->afbuf; |
| 4830 | |
| 4831 | if (ap->afid != AFID_NOBUF) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4832 | if ((i = ap->afid != bp->id) || bp->bufp == bp->ebufp) { |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4833 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4834 | if (i) |
Denis Vlasenko | ea62077 | 2006-10-14 02:23:43 +0000 | [diff] [blame] | 4835 | lseek(ap->afile, ap->afpos, SEEK_SET); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4836 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4837 | i = safe_read(ap->afile, bp->buf, sizeof(bp->buf)); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4838 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4839 | if (i <= 0) { |
| 4840 | closef(ap->afile); |
| 4841 | return 0; |
| 4842 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4843 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4844 | bp->id = ap->afid; |
| 4845 | bp->ebufp = (bp->bufp = bp->buf) + i; |
| 4846 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4847 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4848 | ap->afpos++; |
| 4849 | return *bp->bufp++ & 0177; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4850 | } |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 4851 | #ifdef CONFIG_FEATURE_COMMAND_EDITING |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 4852 | if (interactive && isatty(ap->afile)) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4853 | static char mycommand[BUFSIZ]; |
| 4854 | static int position = 0, size = 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4855 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4856 | while (size == 0 || position >= size) { |
| 4857 | cmdedit_read_input(current_prompt, mycommand); |
| 4858 | size = strlen(mycommand); |
| 4859 | position = 0; |
| 4860 | } |
| 4861 | c = mycommand[position]; |
| 4862 | position++; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4863 | return c; |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 4864 | } else |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4865 | #endif |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4866 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4867 | { |
Eric Andersen | 7467c8d | 2001-07-12 20:26:32 +0000 | [diff] [blame] | 4868 | i = safe_read(ap->afile, &c, sizeof(c)); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4869 | return i == sizeof(c) ? (c & 0x7f) : (closef(ap->afile), 0); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4870 | } |
| 4871 | } |
| 4872 | |
| 4873 | /* |
| 4874 | * Return the characters from a here temp file. |
| 4875 | */ |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4876 | static int herechar(struct ioarg *ap) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4877 | { |
| 4878 | char c; |
| 4879 | |
| 4880 | |
| 4881 | if (read(ap->afile, &c, sizeof(c)) != sizeof(c)) { |
| 4882 | close(ap->afile); |
| 4883 | c = 0; |
| 4884 | } |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4885 | return c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4886 | |
| 4887 | } |
| 4888 | |
| 4889 | /* |
| 4890 | * Return the characters produced by a process (`...`). |
| 4891 | * Quote them if required, and remove any trailing newline characters. |
| 4892 | */ |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 4893 | static int gravechar(struct ioarg *ap, struct io *iop) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4894 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4895 | int c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4896 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4897 | if ((c = qgravechar(ap, iop) & ~QUOTE) == '\n') |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4898 | c = ' '; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4899 | return c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4900 | } |
| 4901 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4902 | static int qgravechar(struct ioarg *ap, struct io *iop) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4903 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4904 | int c; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4905 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 4906 | DBGPRINTF3(("QGRAVECHAR: enter, ap=%p, iop=%p\n", ap, iop)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4907 | |
| 4908 | if (iop->xchar) { |
| 4909 | if (iop->nlcount) { |
| 4910 | iop->nlcount--; |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4911 | return '\n' | QUOTE; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4912 | } |
| 4913 | c = iop->xchar; |
| 4914 | iop->xchar = 0; |
| 4915 | } else if ((c = filechar(ap)) == '\n') { |
| 4916 | iop->nlcount = 1; |
| 4917 | while ((c = filechar(ap)) == '\n') |
| 4918 | iop->nlcount++; |
| 4919 | iop->xchar = c; |
| 4920 | if (c == 0) |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4921 | return c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4922 | iop->nlcount--; |
| 4923 | c = '\n'; |
| 4924 | } |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4925 | return c != 0 ? c | QUOTE : 0; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4926 | } |
| 4927 | |
| 4928 | /* |
| 4929 | * Return a single command (usually the first line) from a file. |
| 4930 | */ |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4931 | static int linechar(struct ioarg *ap) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4932 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4933 | int c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4934 | |
| 4935 | if ((c = filechar(ap)) == '\n') { |
| 4936 | if (!multiline) { |
| 4937 | closef(ap->afile); |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4938 | ap->afile = -1; /* illegal value */ |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4939 | } |
| 4940 | } |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 4941 | return c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4942 | } |
| 4943 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4944 | static void prs(const char *s) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4945 | { |
| 4946 | if (*s) |
| 4947 | write(2, s, strlen(s)); |
| 4948 | } |
| 4949 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 4950 | static void prn(unsigned u) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4951 | { |
Eric Andersen | 737f5fb | 2003-03-14 16:05:59 +0000 | [diff] [blame] | 4952 | prs(itoa(u)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4953 | } |
| 4954 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4955 | static void closef(int i) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4956 | { |
| 4957 | if (i > 2) |
| 4958 | close(i); |
| 4959 | } |
| 4960 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 4961 | static void closeall(void) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4962 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4963 | int u; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4964 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4965 | for (u = NUFILE; u < NOFILE;) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4966 | close(u++); |
| 4967 | } |
| 4968 | |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4969 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4970 | /* |
| 4971 | * remap fd into Shell's fd space |
| 4972 | */ |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4973 | static int remap(int fd) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4974 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 4975 | int i; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4976 | int map[NOFILE]; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4977 | int newfd; |
| 4978 | |
| 4979 | |
| 4980 | DBGPRINTF(("REMAP: fd=%d, e.iofd=%d\n", fd, e.iofd)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4981 | |
| 4982 | if (fd < e.iofd) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4983 | for (i = 0; i < NOFILE; i++) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4984 | map[i] = 0; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4985 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4986 | do { |
| 4987 | map[fd] = 1; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4988 | newfd = dup(fd); |
| 4989 | fd = newfd; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4990 | } while (fd >= 0 && fd < e.iofd); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4991 | |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 4992 | for (i = 0; i < NOFILE; i++) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4993 | if (map[i]) |
| 4994 | close(i); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4995 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 4996 | if (fd < 0) |
| 4997 | err("too many files open in shell"); |
| 4998 | } |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 4999 | |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 5000 | return fd; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5001 | } |
| 5002 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 5003 | static int openpipe(int *pv) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5004 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 5005 | int i; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5006 | |
| 5007 | if ((i = pipe(pv)) < 0) |
| 5008 | err("can't create pipe - try again"); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 5009 | return i; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5010 | } |
| 5011 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 5012 | static void closepipe(int *pv) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5013 | { |
| 5014 | if (pv != NULL) { |
| 5015 | close(*pv++); |
| 5016 | close(*pv); |
| 5017 | } |
| 5018 | } |
| 5019 | |
| 5020 | /* -------- here.c -------- */ |
| 5021 | |
| 5022 | /* |
| 5023 | * here documents |
| 5024 | */ |
| 5025 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 5026 | static void markhere(char *s, struct ioword *iop) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5027 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 5028 | struct here *h, *lh; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 5029 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 5030 | DBGPRINTF7(("MARKHERE: enter, s=%p\n", s)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5031 | |
| 5032 | h = (struct here *) space(sizeof(struct here)); |
| 5033 | if (h == 0) |
| 5034 | return; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 5035 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5036 | h->h_tag = evalstr(s, DOSUB); |
| 5037 | if (h->h_tag == 0) |
| 5038 | return; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 5039 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5040 | h->h_iop = iop; |
| 5041 | iop->io_name = 0; |
| 5042 | h->h_next = NULL; |
| 5043 | if (inhere == 0) |
| 5044 | inhere = h; |
| 5045 | else |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 5046 | for (lh = inhere; lh != NULL; lh = lh->h_next) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5047 | if (lh->h_next == 0) { |
| 5048 | lh->h_next = h; |
| 5049 | break; |
| 5050 | } |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 5051 | iop->io_flag |= IOHERE | IOXHERE; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5052 | for (s = h->h_tag; *s; s++) |
| 5053 | if (*s & QUOTE) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 5054 | iop->io_flag &= ~IOXHERE; |
| 5055 | *s &= ~QUOTE; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5056 | } |
| 5057 | h->h_dosub = iop->io_flag & IOXHERE; |
| 5058 | } |
| 5059 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 5060 | static void gethere(void) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5061 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 5062 | struct here *h, *hp; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 5063 | |
| 5064 | DBGPRINTF7(("GETHERE: enter...\n")); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5065 | |
| 5066 | /* Scan here files first leaving inhere list in place */ |
| 5067 | for (hp = h = inhere; h != NULL; hp = h, h = h->h_next) |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 5068 | readhere(&h->h_iop->io_name, h->h_tag, h->h_dosub ? 0 : '\''); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5069 | |
| 5070 | /* Make inhere list active - keep list intact for scraphere */ |
| 5071 | if (hp != NULL) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 5072 | hp->h_next = acthere; |
| 5073 | acthere = inhere; |
| 5074 | inhere = NULL; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5075 | } |
| 5076 | } |
| 5077 | |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 5078 | static void readhere(char **name, char *s, int ec) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5079 | { |
| 5080 | int tf; |
| 5081 | char tname[30] = ".msh_XXXXXX"; |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 5082 | int c; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5083 | jmp_buf ev; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 5084 | char myline[LINELIM + 1]; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5085 | char *thenext; |
| 5086 | |
Mike Frysinger | 02d8fa4 | 2006-05-05 20:32:31 +0000 | [diff] [blame] | 5087 | DBGPRINTF7(("READHERE: enter, name=%p, s=%p\n", name, s)); |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 5088 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5089 | tf = mkstemp(tname); |
| 5090 | if (tf < 0) |
| 5091 | return; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 5092 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5093 | *name = strsave(tname, areanum); |
| 5094 | if (newenv(setjmp(errpt = ev)) != 0) |
| 5095 | unlink(tname); |
| 5096 | else { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 5097 | pushio(e.iop->argp, (int (*)(struct ioarg *)) e.iop->iofn); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5098 | e.iobase = e.iop; |
| 5099 | for (;;) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 5100 | if (interactive && e.iop <= iostack) { |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 5101 | #ifdef CONFIG_FEATURE_COMMAND_EDITING |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 5102 | current_prompt = cprompt->value; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5103 | #else |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 5104 | prs(cprompt->value); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5105 | #endif |
| 5106 | } |
| 5107 | thenext = myline; |
| 5108 | while ((c = my_getc(ec)) != '\n' && c) { |
| 5109 | if (ec == '\'') |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 5110 | c &= ~QUOTE; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5111 | if (thenext >= &myline[LINELIM]) { |
| 5112 | c = 0; |
| 5113 | break; |
| 5114 | } |
| 5115 | *thenext++ = c; |
| 5116 | } |
| 5117 | *thenext = 0; |
| 5118 | if (strcmp(s, myline) == 0 || c == 0) |
| 5119 | break; |
| 5120 | *thenext++ = '\n'; |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 5121 | write(tf, myline, (int) (thenext - myline)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5122 | } |
| 5123 | if (c == 0) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 5124 | prs("here document `"); |
| 5125 | prs(s); |
| 5126 | err("' unclosed"); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5127 | } |
| 5128 | quitenv(); |
| 5129 | } |
| 5130 | close(tf); |
| 5131 | } |
| 5132 | |
| 5133 | /* |
| 5134 | * open here temp file. |
| 5135 | * if unquoted here, expand here temp file into second temp file. |
| 5136 | */ |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 5137 | static int herein(char *hname, int xdoll) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5138 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 5139 | int hf; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5140 | int tf; |
| 5141 | |
| 5142 | #if __GNUC__ |
| 5143 | /* Avoid longjmp clobbering */ |
| 5144 | (void) &tf; |
| 5145 | #endif |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 5146 | if (hname == NULL) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 5147 | return -1; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 5148 | |
| 5149 | DBGPRINTF7(("HEREIN: hname is %s, xdoll=%d\n", hname, xdoll)); |
| 5150 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5151 | hf = open(hname, 0); |
| 5152 | if (hf < 0) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 5153 | return -1; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 5154 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5155 | if (xdoll) { |
| 5156 | char c; |
| 5157 | char tname[30] = ".msh_XXXXXX"; |
| 5158 | jmp_buf ev; |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 5159 | |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5160 | tf = mkstemp(tname); |
| 5161 | if (tf < 0) |
Denis Vlasenko | 079f8af | 2006-11-27 16:49:31 +0000 | [diff] [blame] | 5162 | return -1; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5163 | if (newenv(setjmp(errpt = ev)) == 0) { |
| 5164 | PUSHIO(afile, hf, herechar); |
| 5165 | setbase(e.iop); |
| 5166 | while ((c = subgetc(0, 0)) != 0) { |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 5167 | c &= ~QUOTE; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5168 | write(tf, &c, sizeof c); |
| 5169 | } |
| 5170 | quitenv(); |
| 5171 | } else |
| 5172 | unlink(tname); |
| 5173 | close(tf); |
| 5174 | tf = open(tname, 0); |
| 5175 | unlink(tname); |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 5176 | return tf; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5177 | } else |
Denis Vlasenko | d9e15f2 | 2006-11-27 16:49:55 +0000 | [diff] [blame^] | 5178 | return hf; |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5179 | } |
| 5180 | |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 5181 | static void scraphere(void) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5182 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 5183 | struct here *h; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 5184 | |
| 5185 | DBGPRINTF7(("SCRAPHERE: enter...\n")); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5186 | |
| 5187 | for (h = inhere; h != NULL; h = h->h_next) { |
| 5188 | if (h->h_iop && h->h_iop->io_name) |
Eric Andersen | 8401eea | 2004-08-04 19:16:54 +0000 | [diff] [blame] | 5189 | unlink(h->h_iop->io_name); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5190 | } |
| 5191 | inhere = NULL; |
| 5192 | } |
| 5193 | |
| 5194 | /* unlink here temp files before a freearea(area) */ |
Bernhard Reutner-Fischer | f087798 | 2006-06-25 22:08:53 +0000 | [diff] [blame] | 5195 | static void freehere(int area) |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5196 | { |
"Robert P. J. Day" | 6822983 | 2006-07-01 13:08:46 +0000 | [diff] [blame] | 5197 | struct here *h, *hl; |
Eric Andersen | 12de6cf | 2004-08-04 19:19:10 +0000 | [diff] [blame] | 5198 | |
| 5199 | DBGPRINTF6(("FREEHERE: enter, area=%d\n", area)); |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5200 | |
| 5201 | hl = NULL; |
| 5202 | for (h = acthere; h != NULL; h = h->h_next) |
| 5203 | if (getarea((char *) h) >= area) { |
| 5204 | if (h->h_iop->io_name != NULL) |
| 5205 | unlink(h->h_iop->io_name); |
| 5206 | if (hl == NULL) |
| 5207 | acthere = h->h_next; |
| 5208 | else |
| 5209 | hl->h_next = h->h_next; |
| 5210 | } else |
| 5211 | hl = h; |
| 5212 | } |
| 5213 | |
| 5214 | |
| 5215 | |
| 5216 | /* |
| 5217 | * Copyright (c) 1987,1997, Prentice Hall |
| 5218 | * All rights reserved. |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 5219 | * |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5220 | * Redistribution and use of the MINIX operating system in source and |
| 5221 | * binary forms, with or without modification, are permitted provided |
| 5222 | * that the following conditions are met: |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 5223 | * |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5224 | * Redistributions of source code must retain the above copyright |
| 5225 | * notice, this list of conditions and the following disclaimer. |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 5226 | * |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5227 | * Redistributions in binary form must reproduce the above |
| 5228 | * copyright notice, this list of conditions and the following |
| 5229 | * disclaimer in the documentation and/or other materials provided |
| 5230 | * with the distribution. |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 5231 | * |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5232 | * Neither the name of Prentice Hall nor the names of the software |
| 5233 | * authors or contributors may be used to endorse or promote |
| 5234 | * products derived from this software without specific prior |
| 5235 | * written permission. |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 5236 | * |
Eric Andersen | ff9eee4 | 2001-06-29 04:57:14 +0000 | [diff] [blame] | 5237 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS, AUTHORS, AND |
| 5238 | * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, |
| 5239 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 5240 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 5241 | * IN NO EVENT SHALL PRENTICE HALL OR ANY AUTHORS OR CONTRIBUTORS BE |
| 5242 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 5243 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 5244 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 5245 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 5246 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| 5247 | * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, |
| 5248 | * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 5249 | * |
| 5250 | */ |