Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 1 | /* ps.c - show process list |
Rob Landley | 7459c34 | 2013-08-20 15:37:42 -0500 | [diff] [blame] | 2 | * |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 3 | * Copyright 2015 Rob Landley <rob@landley.net> |
Rob Landley | 3fdbdac | 2014-05-18 14:05:13 -0500 | [diff] [blame] | 4 | * |
Rob Landley | 7459c34 | 2013-08-20 15:37:42 -0500 | [diff] [blame] | 5 | * See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/ps.html |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 6 | * And http://kernel.org/doc/Documentation/filesystems/proc.txt Table 1-4 |
| 7 | * And linux kernel source fs/proc/array.c function do_task_stat() |
| 8 | * |
Rob Landley | 77d7424 | 2015-04-14 19:37:55 -0500 | [diff] [blame] | 9 | * Deviations from posix: no -n to specify an alternate /etc/passwd (??!?) |
| 10 | * Posix says default output should have field named "TTY" but if you "-o tty" |
| 11 | * the same field should be called "TT" which is _INSANE_ and I'm not doing it. |
| 12 | * It also says that -o "args" and "comm" should behave differently but use |
| 13 | * the same title, which is not the same title as the default output. No. |
Rob Landley | 7459c34 | 2013-08-20 15:37:42 -0500 | [diff] [blame] | 14 | |
Rob Landley | 77d7424 | 2015-04-14 19:37:55 -0500 | [diff] [blame] | 15 | USE_PS(NEWTOY(ps, "aAdeflo*[!ol][+Ae]", TOYFLAG_USR|TOYFLAG_BIN)) |
Rob Landley | 7459c34 | 2013-08-20 15:37:42 -0500 | [diff] [blame] | 16 | |
| 17 | config PS |
| 18 | bool "ps" |
| 19 | default n |
| 20 | help |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 21 | usage: ps [-Aade] [-fl] [-gG GROUP] [-o FIELD] [-p PID] [-t TTY] [-u USER] |
Rob Landley | 3fdbdac | 2014-05-18 14:05:13 -0500 | [diff] [blame] | 22 | |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 23 | List processes. |
| 24 | |
| 25 | -A All processes |
| 26 | -a Processes with terminals, except session leaders |
| 27 | -d Processes that aren't session leaders |
| 28 | -e Same as -A |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 29 | -f Full listing |
Rob Landley | 97c536c | 2015-04-03 11:46:44 -0500 | [diff] [blame] | 30 | -l Long listing |
| 31 | |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 32 | -g Processes belonging to these session leaders |
| 33 | -G Processes with these real group IDs |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 34 | -o Show FIELDS for each process |
| 35 | -p select by PID |
| 36 | -t select by TTY |
| 37 | -u select by USER |
| 38 | -U select by USER |
| 39 | |
| 40 | GROUP, FIELD, PID, TTY, and USER are comma separated lists. |
| 41 | |
| 42 | OUTPUT (-o) FIELDS: |
| 43 | |
Rob Landley | 77d7424 | 2015-04-14 19:37:55 -0500 | [diff] [blame] | 44 | "UID", "PID", "PPID", "C", "PRI", "NI", "ADDR", "SZ", |
| 45 | "WCHAN", "STIME", "TTY", "TIME", "CMD", "COMMAND", "ELAPSED", "GROUP", |
| 46 | "%CPU", "PGID", "RGROUP", "RUSER", "USER", "VSZ" |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 47 | |
Rob Landley | 77d7424 | 2015-04-14 19:37:55 -0500 | [diff] [blame] | 48 | C Processor utilization for scheduling |
| 49 | F Process flags (PF_*) from linux source file include/sched.h |
| 50 | (in octal rather than hex because posix) |
| 51 | S Process state: |
| 52 | R (running) S (sleeping) D (disk sleep) T (stopped) t (tracing stop) |
| 53 | Z (zombie) X (dead) x (dead) K (wakekill) W (waking) |
| 54 | PID Process id |
| 55 | PPID Parent process id |
| 56 | PRI Priority |
| 57 | UID User id of process owner |
| 58 | |
| 59 | Default output is -o PID,TTY,TIME,CMD |
| 60 | With -f USER=UID,PID,PPID,C,STIME,TTY,TIME,CMD |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 61 | With -l F,S,UID,PID,PPID,C,PRI,NI,ADDR,SZ,WCHAN,TTY,TIME,CMD |
Rob Landley | 7459c34 | 2013-08-20 15:37:42 -0500 | [diff] [blame] | 62 | */ |
Rob Landley | 3fdbdac | 2014-05-18 14:05:13 -0500 | [diff] [blame] | 63 | |
Rob Landley | 7459c34 | 2013-08-20 15:37:42 -0500 | [diff] [blame] | 64 | #define FOR_ps |
| 65 | #include "toys.h" |
| 66 | |
| 67 | GLOBALS( |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 68 | struct arg_list *o; |
Rob Landley | 3db3414 | 2015-02-27 12:17:30 -0600 | [diff] [blame] | 69 | |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 70 | unsigned width; |
| 71 | dev_t tty; |
Rob Landley | 97c536c | 2015-04-03 11:46:44 -0500 | [diff] [blame] | 72 | void *fields; |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 73 | long uptime; |
Rob Landley | 7459c34 | 2013-08-20 15:37:42 -0500 | [diff] [blame] | 74 | ) |
| 75 | |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 76 | /* |
| 77 | l l fl a fl fl l l l l l f a a a |
| 78 | F S UID PID PPID C PRI NI ADDR SZ WCHAN STIME TTY TIME CMD |
| 79 | ruser user rgroup group pid ppid pgid pcpu vsz nice etime time tty comm args |
Rob Landley | 7459c34 | 2013-08-20 15:37:42 -0500 | [diff] [blame] | 80 | |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 81 | todo: thread support /proc/$d/task/%d/stat |
| 82 | man page: F flags mean... |
| 83 | */ |
| 84 | |
Rob Landley | 97c536c | 2015-04-03 11:46:44 -0500 | [diff] [blame] | 85 | struct strawberry { |
| 86 | struct strawberry *next, *prev; |
| 87 | short which, len; |
| 88 | char title[]; |
| 89 | }; |
| 90 | |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 91 | // dirtree callback. |
| 92 | // toybuf used as: 1024 /proc/$PID/stat, 1024 slot[], 2048 /proc/$PID/cmdline |
| 93 | static int do_ps(struct dirtree *new) |
Rob Landley | 7459c34 | 2013-08-20 15:37:42 -0500 | [diff] [blame] | 94 | { |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 95 | struct strawberry *field; |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 96 | long long *slot = (void *)(toybuf+1024); |
| 97 | char *name, *s, state; |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 98 | int nlen, i, fd, len, width = TT.width; |
Rob Landley | 7459c34 | 2013-08-20 15:37:42 -0500 | [diff] [blame] | 99 | |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 100 | if (!new->parent) return DIRTREE_RECURSE; |
| 101 | if (!(*slot = atol(new->name))) return 0; |
Rob Landley | 7459c34 | 2013-08-20 15:37:42 -0500 | [diff] [blame] | 102 | |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 103 | // name field limited to 256 bytes by VFS, plus 40 fields * max 20 chars: |
| 104 | // 1000-ish total, but some forced zero so actually there's headroom. |
| 105 | sprintf(toybuf, "%lld/stat", *slot); |
| 106 | if (!readfileat(dirtree_parentfd(new), toybuf, toybuf, 1024)) return 0; |
Rob Landley | 7459c34 | 2013-08-20 15:37:42 -0500 | [diff] [blame] | 107 | |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 108 | // parse oddball fields (name and state) |
| 109 | if (!(s = strchr(toybuf, '('))) return 0; |
| 110 | for (name = ++s; *s != ')'; s++) if (!*s) return 0; |
| 111 | nlen = s++-name; |
| 112 | if (1>sscanf(++s, " %c%n", &state, &i)) return 0; |
Rob Landley | 7459c34 | 2013-08-20 15:37:42 -0500 | [diff] [blame] | 113 | |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 114 | // parse numeric fields |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 115 | for (len = 1; len<100; len++) |
| 116 | if (1>sscanf(s += i, " %lld%n", slot+len, &i)) break; |
Rob Landley | 7459c34 | 2013-08-20 15:37:42 -0500 | [diff] [blame] | 117 | |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 118 | // skip entries we don't care about. |
| 119 | if ((toys.optflags&(FLAG_a|FLAG_d)) && getsid(*slot)==*slot) return 0; |
| 120 | if ((toys.optflags&FLAG_a) && !slot[4]) return 0; |
Rob Landley | 77d7424 | 2015-04-14 19:37:55 -0500 | [diff] [blame] | 121 | if (!(toys.optflags&(FLAG_a|FLAG_d|FLAG_A|FLAG_e)) && TT.tty!=slot[4]) |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 122 | return 0; |
Rob Landley | 7459c34 | 2013-08-20 15:37:42 -0500 | [diff] [blame] | 123 | |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 124 | for (field = TT.fields; field; field = field->next) { |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 125 | char *out = toybuf+2048; |
Rob Landley | 97c536c | 2015-04-03 11:46:44 -0500 | [diff] [blame] | 126 | |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 127 | // Default: unsupported (5 "C") |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 128 | sprintf(out, "-"); |
| 129 | |
Rob Landley | 97c536c | 2015-04-03 11:46:44 -0500 | [diff] [blame] | 130 | // PID, PPID, PRI, NI, ADDR, SZ |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 131 | if (-1 != (i = stridx((char[]){3,4,6,7,8,9,0}, field->which))) |
Rob Landley | 97c536c | 2015-04-03 11:46:44 -0500 | [diff] [blame] | 132 | sprintf(out, ((1<<i)&0x10) ? "%llx" : "%lld", |
| 133 | slot[((char[]){0,2,16,17,22})[i]]>>(((1<<i)&0x20) ? 12 : 0)); |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 134 | // F |
| 135 | else if (!(i = field->which)) sprintf(out, "%llo", slot[7]); |
Rob Landley | 97c536c | 2015-04-03 11:46:44 -0500 | [diff] [blame] | 136 | // S |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 137 | else if (i == 1) |
Rob Landley | 97c536c | 2015-04-03 11:46:44 -0500 | [diff] [blame] | 138 | sprintf(out, "%c", state); |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 139 | // UID and USER |
| 140 | else if (i == 2 || i == 22) { |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 141 | sprintf(out, "%d", new->st.st_uid); |
Rob Landley | 77d7424 | 2015-04-14 19:37:55 -0500 | [diff] [blame] | 142 | if (i == 22) { |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 143 | struct passwd *pw = getpwuid(new->st.st_uid); |
| 144 | |
| 145 | if (pw) out = pw->pw_name; |
| 146 | } |
Rob Landley | 97c536c | 2015-04-03 11:46:44 -0500 | [diff] [blame] | 147 | // WCHAN |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 148 | } else if (i==10) { |
Rob Landley | 97c536c | 2015-04-03 11:46:44 -0500 | [diff] [blame] | 149 | sprintf(toybuf+512, "%lld/wchan", *slot); |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 150 | readfileat(dirtree_parentfd(new), toybuf+512, out, 2047); |
| 151 | |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 152 | // STIME |
| 153 | // TTY |
| 154 | } else if (i==12) { |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 155 | |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 156 | // Can we readlink() our way to a name? |
| 157 | for (i=0; i<3; i++) { |
| 158 | struct stat st; |
| 159 | |
| 160 | sprintf(toybuf+512, "%lld/fd/%i", *slot, i); |
| 161 | fd = dirtree_parentfd(new); |
| 162 | if (!fstatat(fd, toybuf+512, &st, 0) && S_ISCHR(st.st_mode) |
| 163 | && st.st_rdev == slot[4] |
| 164 | && 0<(len = readlinkat(fd, toybuf+512, out, 2047))) |
| 165 | { |
| 166 | out[len] = 0; |
| 167 | if (!strncmp(out, "/dev/", 5)) out += 5; |
| 168 | |
| 169 | break; |
| 170 | } |
| 171 | } |
| 172 | |
| 173 | // Couldn't find it, show major:minor |
| 174 | if (i==3) { |
| 175 | i = slot[4]; |
| 176 | sprintf(out, "%d:%d", (i>>8)&0xfff, ((i>>12)&0xfff00)|(i&0xff)); |
| 177 | } |
| 178 | |
Rob Landley | 77d7424 | 2015-04-14 19:37:55 -0500 | [diff] [blame] | 179 | // TIME ELAPSED |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 180 | } else if (i==13 || i==16) { |
| 181 | long seconds = (i==16) ? slot[20] : slot[11]+slot[12], ll = 60*60*24; |
| 182 | |
| 183 | seconds /= sysconf(_SC_CLK_TCK); |
| 184 | if (i==16) seconds = TT.uptime-seconds; |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 185 | for (s = out, i = 0; i<4; i++) { |
| 186 | if (i>1 || seconds > ll) |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 187 | s += sprintf(s, (i==3) ? "%02ld" : "%ld%c", seconds/ll, "-::"[i]); |
| 188 | seconds %= ll; |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 189 | ll /= i ? 60 : 24; |
| 190 | } |
| 191 | |
Rob Landley | 77d7424 | 2015-04-14 19:37:55 -0500 | [diff] [blame] | 192 | //16 "ELAPSED", "GROUP", "%CPU", "PGID", "RGROUP", |
| 193 | //21 "RUSER", -, "VSZ" |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 194 | |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 195 | // Command line limited to 2k displayable. We could dynamically malloc, but |
| 196 | // it'd almost never get used, querying length of a proc file is awkward, |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 197 | // fixed buffer is nommu friendly... Wait for somebody to complain. :) |
| 198 | } else if (i == 14 || i == 15) { |
| 199 | int fd; |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 200 | |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 201 | len = 0; |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 202 | sprintf(out, "%lld/cmdline", *slot); |
| 203 | fd = openat(dirtree_parentfd(new), out, O_RDONLY); |
| 204 | |
| 205 | if (fd != -1) { |
| 206 | if (0<(len = read(fd, out, 2047))) { |
Rob Landley | 77d7424 | 2015-04-14 19:37:55 -0500 | [diff] [blame] | 207 | if (!out[len-1]) len--; |
| 208 | else out[len] = 0; |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 209 | for (i = 0; i<len; i++) if (out[i] < ' ') out[i] = ' '; |
Rob Landley | 7459c34 | 2013-08-20 15:37:42 -0500 | [diff] [blame] | 210 | } |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 211 | close(fd); |
| 212 | } |
| 213 | if (len<1) sprintf(out, "[%.*s]", nlen, name); |
Rob Landley | 7459c34 | 2013-08-20 15:37:42 -0500 | [diff] [blame] | 214 | } |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 215 | |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 216 | i = width<field->len ? width : field->len; |
| 217 | width -= printf(" %*.*s", i, field->next ? i : width, out); |
Rob Landley | 7459c34 | 2013-08-20 15:37:42 -0500 | [diff] [blame] | 218 | } |
Rob Landley | 7459c34 | 2013-08-20 15:37:42 -0500 | [diff] [blame] | 219 | xputc('\n'); |
Rob Landley | 7459c34 | 2013-08-20 15:37:42 -0500 | [diff] [blame] | 220 | |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 221 | return 0; |
Rob Landley | 7459c34 | 2013-08-20 15:37:42 -0500 | [diff] [blame] | 222 | } |
| 223 | |
| 224 | void ps_main(void) |
| 225 | { |
Rob Landley | 97c536c | 2015-04-03 11:46:44 -0500 | [diff] [blame] | 226 | struct strawberry *field; |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 227 | // Octal output code followed by header name |
Rob Landley | 77d7424 | 2015-04-14 19:37:55 -0500 | [diff] [blame] | 228 | char widths[] = {1,1,5,5,5,2,3,3,4,5,6,5,8,8,27,27,11,8,4,5,8,8,8,6}, |
| 229 | *typos[] = { |
| 230 | "F", "S", "UID", "PID", "PPID", "C", "PRI", "NI", "ADDR", "SZ", |
| 231 | "WCHAN", "STIME", "TTY", "TIME", "CMD", "COMMAND", "ELAPSED", "GROUP", |
| 232 | "%CPU", "PGID", "RGROUP", "RUSER", "USER", "VSZ" |
| 233 | }; |
Rob Landley | 97c536c | 2015-04-03 11:46:44 -0500 | [diff] [blame] | 234 | int i, fd = -1; |
Rob Landley | d0bc1a3 | 2015-03-14 12:34:14 -0500 | [diff] [blame] | 235 | |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 236 | TT.width = 80; |
| 237 | terminal_size(&TT.width, 0); |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 238 | TT.width--; |
Rob Landley | 7459c34 | 2013-08-20 15:37:42 -0500 | [diff] [blame] | 239 | |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 240 | // find controlling tty, falling back to /dev/tty if none |
| 241 | for (i = fd = 0; i < 4; i++) { |
| 242 | struct stat st; |
| 243 | |
| 244 | if (i != 3 || -1 != (i = fd = open("/dev/tty", O_RDONLY))) { |
| 245 | if (isatty(i) && !fstat(i, &st)) { |
| 246 | TT.tty = st.st_rdev; |
| 247 | break; |
| 248 | } |
| 249 | } |
Rob Landley | 7459c34 | 2013-08-20 15:37:42 -0500 | [diff] [blame] | 250 | } |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 251 | if (fd != -1) close(fd); |
Rob Landley | 3db3414 | 2015-02-27 12:17:30 -0600 | [diff] [blame] | 252 | |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 253 | sysinfo((void *)toybuf); |
| 254 | // Because "TT.uptime = *(long *)toybuf;" triggers a bug in gcc. |
| 255 | { |
| 256 | long *sigh = (long *)toybuf; |
| 257 | TT.uptime = *sigh; |
| 258 | } |
| 259 | |
Rob Landley | 77d7424 | 2015-04-14 19:37:55 -0500 | [diff] [blame] | 260 | // Manual field selection via -o |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 261 | if (toys.optflags&FLAG_o) { |
Rob Landley | 77d7424 | 2015-04-14 19:37:55 -0500 | [diff] [blame] | 262 | struct arg_list *ol; |
| 263 | int length; |
| 264 | |
| 265 | for (ol = TT.o; ol; ol = ol->next) { |
| 266 | char *width, *type, *title, *end, *arg = ol->arg; |
| 267 | |
| 268 | // Set title, length of title, type, end of type, and display width |
| 269 | while ((type = comma_iterate(&arg, &length))) { |
| 270 | if ((end = strchr(type, '=')) && length<(end-type)) { |
| 271 | title = end+1; |
| 272 | length = (end-type)-1; |
| 273 | } else { |
| 274 | end = type+length; |
| 275 | title = 0; |
| 276 | } |
| 277 | |
| 278 | // If changing display width, trim title at the : |
| 279 | if ((width = strchr(type, ':')) && width<end) { |
| 280 | if (!title) length = width-type; |
| 281 | } else width = 0; |
| 282 | |
| 283 | // Allocate structure, copy title |
| 284 | field = xmalloc(sizeof(struct strawberry)+length+1); |
| 285 | if (title) { |
| 286 | memcpy(field->title, title, length); |
| 287 | field->title[length] = 0; |
| 288 | } |
| 289 | field->len = length; |
| 290 | |
| 291 | if (width) { |
| 292 | field->len = strtol(++width, &title, 10); |
| 293 | if (!isdigit(*width) || title != end) |
| 294 | error_exit("bad : in -o %s@%ld", ol->arg, title-ol->arg); |
| 295 | end = width; |
| 296 | } |
| 297 | |
| 298 | // Find type (reuse width as temp because we're done with it) |
| 299 | for (i = 0; i<ARRAY_LEN(typos) && !field->which; i++) { |
| 300 | int j, k; |
| 301 | char *s; |
| 302 | |
| 303 | field->which = i; |
| 304 | for (j = 0; j < 2; j++) { |
| 305 | if (!j) s = typos[i]; |
| 306 | // posix requires alternate names for some fields |
| 307 | else if (-1 == (k = stridx((char []){7, 14, 15, 16}, i))) break; |
| 308 | else s = ((char *[]){"nice", "args", "comm", "etime"})[k]; |
| 309 | |
| 310 | if (!strncasecmp(type, s, end-type) && strlen(s)==end-type) break; |
| 311 | } |
| 312 | if (j!=2) break; |
| 313 | } |
| 314 | if (i == ARRAY_LEN(typos)) error_exit("bad -o %.*s", end-type, type); |
| 315 | if (!field->title) strcpy(field->title, typos[field->which]); |
| 316 | dlist_add_nomalloc((void *)&TT.fields, (void *)field); |
| 317 | } |
| 318 | } |
| 319 | |
| 320 | // Default fields (also with -f and -l) |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 321 | } else { |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 322 | unsigned short def = 0x7008; |
Rob Landley | 3db3414 | 2015-02-27 12:17:30 -0600 | [diff] [blame] | 323 | |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 324 | if (toys.optflags&FLAG_f) def = 0x783c; |
| 325 | if (toys.optflags&FLAG_l) def = 0x77ff; |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 326 | |
| 327 | // order of fields[] matches posix STDOUT section, so add enabled XSI |
| 328 | // defaults according to bitmask |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 329 | |
Rob Landley | 97c536c | 2015-04-03 11:46:44 -0500 | [diff] [blame] | 330 | for (i=0; def>>i; i++) { |
Rob Landley | 97c536c | 2015-04-03 11:46:44 -0500 | [diff] [blame] | 331 | if (!((def>>i)&1)) continue; |
| 332 | |
Rob Landley | 77d7424 | 2015-04-14 19:37:55 -0500 | [diff] [blame] | 333 | field = xmalloc(sizeof(struct strawberry)+strlen(typos[i])+1); |
Rob Landley | 97c536c | 2015-04-03 11:46:44 -0500 | [diff] [blame] | 334 | field->which = i; |
Rob Landley | 77d7424 | 2015-04-14 19:37:55 -0500 | [diff] [blame] | 335 | field->len = widths[i]; |
Rob Landley | 97c536c | 2015-04-03 11:46:44 -0500 | [diff] [blame] | 336 | strcpy(field->title, typos[i]); |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 337 | dlist_add_nomalloc((void *)&TT.fields, (void *)field); |
Rob Landley | 97c536c | 2015-04-03 11:46:44 -0500 | [diff] [blame] | 338 | } |
| 339 | } |
| 340 | dlist_terminate(TT.fields); |
| 341 | |
Rob Landley | 77d7424 | 2015-04-14 19:37:55 -0500 | [diff] [blame] | 342 | // Print padded headers. (Numbers are right justified, everyting else left. |
| 343 | // time and pcpu count as numbers, tty does not) |
| 344 | for (field = TT.fields; field; field = field->next) { |
| 345 | |
| 346 | // right justify F, UID, PID, PPID, PRI, NI, ADDR SZ, TIME, ELAPSED, %CPU |
| 347 | // todo: STIME? C? |
| 348 | if (!((1<<field->which)&0x523dd)) field->len *= -1; |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 349 | printf(" %*s", field->len, field->title); |
Rob Landley | 77d7424 | 2015-04-14 19:37:55 -0500 | [diff] [blame] | 350 | |
| 351 | // -f prints USER but calls it UID (but "ps -o uid -f" is numeric...?) |
| 352 | if ((toys.optflags&(FLAG_f|FLAG_o))==FLAG_f && field->which==2) |
| 353 | field->which = 22; |
| 354 | } |
Rob Landley | 0808937 | 2015-04-04 01:26:58 -0500 | [diff] [blame] | 355 | xputc('\n'); |
| 356 | |
Rob Landley | 9a733fc | 2015-04-02 15:07:36 -0500 | [diff] [blame] | 357 | dirtree_read("/proc", do_ps); |
Rob Landley | 7459c34 | 2013-08-20 15:37:42 -0500 | [diff] [blame] | 358 | } |