Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
| 2 | /* |
| 3 | * Busybox main internal header file |
| 4 | * |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 5 | * Based in part on code from sash, Copyright (c) 1999 by David I. Bell |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 6 | * Permission has been granted to redistribute this code under the GPL. |
Denis Vlasenko | f7996f3 | 2007-01-11 17:20:00 +0000 | [diff] [blame] | 7 | * |
Rob Landley | eb84a42 | 2006-09-20 21:41:13 +0000 | [diff] [blame] | 8 | * Licensed under the GPL version 2, see the file LICENSE in this tarball. |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 9 | */ |
Bernhard Reutner-Fischer | 86f5c99 | 2006-01-22 22:55:11 +0000 | [diff] [blame] | 10 | #ifndef __LIBBUSYBOX_H__ |
| 11 | #define __LIBBUSYBOX_H__ 1 |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 12 | |
Bernhard Reutner-Fischer | 781e42d | 2006-05-26 14:41:40 +0000 | [diff] [blame] | 13 | #include "platform.h" |
| 14 | |
Rob Landley | 5d9c42a | 2006-06-24 17:55:02 +0000 | [diff] [blame] | 15 | #include <ctype.h> |
Rob Landley | b623a54 | 2006-05-31 22:09:03 +0000 | [diff] [blame] | 16 | #include <dirent.h> |
Rob Landley | c9c1a41 | 2006-07-12 19:17:55 +0000 | [diff] [blame] | 17 | #include <errno.h> |
Rob Landley | 5d9c42a | 2006-06-24 17:55:02 +0000 | [diff] [blame] | 18 | #include <fcntl.h> |
Rob Landley | b623a54 | 2006-05-31 22:09:03 +0000 | [diff] [blame] | 19 | #include <inttypes.h> |
| 20 | #include <netdb.h> |
Rob Landley | d921b2e | 2006-08-03 15:41:12 +0000 | [diff] [blame] | 21 | #include <setjmp.h> |
Rob Landley | 1cca948 | 2006-07-10 19:45:20 +0000 | [diff] [blame] | 22 | #include <signal.h> |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 23 | #include <stdio.h> |
Manuel Novoa III | 68474f3 | 2004-02-05 14:45:58 +0000 | [diff] [blame] | 24 | #include <stdlib.h> |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 25 | #include <stdarg.h> |
Denis Vlasenko | 4b4b619 | 2007-03-18 20:33:26 +0000 | [diff] [blame] | 26 | #include <stddef.h> |
Rob Landley | 5d9c42a | 2006-06-24 17:55:02 +0000 | [diff] [blame] | 27 | #include <string.h> |
Denis Vlasenko | b308d81 | 2007-08-28 19:35:34 +0000 | [diff] [blame] | 28 | #include <sys/poll.h> |
Rob Landley | c9c1a41 | 2006-07-12 19:17:55 +0000 | [diff] [blame] | 29 | #include <sys/ioctl.h> |
Rob Landley | d921b2e | 2006-08-03 15:41:12 +0000 | [diff] [blame] | 30 | #include <sys/mman.h> |
Rob Landley | 5d9c42a | 2006-06-24 17:55:02 +0000 | [diff] [blame] | 31 | #include <sys/socket.h> |
"Vladimir N. Oleynik" | 7fe6520 | 2005-09-20 10:02:36 +0000 | [diff] [blame] | 32 | #include <sys/stat.h> |
Rob Landley | 299a6b4 | 2006-05-27 21:42:58 +0000 | [diff] [blame] | 33 | #include <sys/time.h> |
Rob Landley | b623a54 | 2006-05-31 22:09:03 +0000 | [diff] [blame] | 34 | #include <sys/types.h> |
Rob Landley | c9c1a41 | 2006-07-12 19:17:55 +0000 | [diff] [blame] | 35 | #include <sys/wait.h> |
Rob Landley | b623a54 | 2006-05-31 22:09:03 +0000 | [diff] [blame] | 36 | #include <termios.h> |
Rob Landley | d921b2e | 2006-08-03 15:41:12 +0000 | [diff] [blame] | 37 | #include <time.h> |
Rob Landley | b13fee4 | 2006-06-20 22:38:00 +0000 | [diff] [blame] | 38 | #include <unistd.h> |
Rob Landley | d921b2e | 2006-08-03 15:41:12 +0000 | [diff] [blame] | 39 | #include <utime.h> |
Denis Vlasenko | 7e3a5f5 | 2007-11-16 20:18:54 +0000 | [diff] [blame] | 40 | /* Try to pull in PATH_MAX */ |
| 41 | #include <limits.h> |
| 42 | #include <sys/param.h> |
| 43 | #ifndef PATH_MAX |
| 44 | #define PATH_MAX 256 |
| 45 | #endif |
Rob Landley | 299a6b4 | 2006-05-27 21:42:58 +0000 | [diff] [blame] | 46 | |
Mike Frysinger | 22876c7 | 2008-02-07 22:10:07 +0000 | [diff] [blame] | 47 | #ifdef HAVE_MNTENT_H |
| 48 | #include <mntent.h> |
| 49 | #endif |
| 50 | |
Mike Frysinger | 9412ec7 | 2008-02-07 22:41:33 +0000 | [diff] [blame] | 51 | #ifdef HAVE_SYS_STATFS_H |
| 52 | #include <sys/statfs.h> |
| 53 | #endif |
| 54 | |
Denis Vlasenko | b5a122b | 2006-12-30 14:46:51 +0000 | [diff] [blame] | 55 | #if ENABLE_SELINUX |
Bernhard Reutner-Fischer | d4cffd1 | 2005-09-21 17:38:30 +0000 | [diff] [blame] | 56 | #include <selinux/selinux.h> |
Denis Vlasenko | 1203c9b | 2007-03-11 22:16:02 +0000 | [diff] [blame] | 57 | #include <selinux/context.h> |
Denis Vlasenko | 2edbc2a | 2007-10-20 02:00:49 +0000 | [diff] [blame] | 58 | #include <selinux/flask.h> |
| 59 | #include <selinux/av_permissions.h> |
Eric Andersen | 9e48045 | 2003-07-03 10:07:04 +0000 | [diff] [blame] | 60 | #endif |
Robert Griebl | c9aca45 | 2002-06-04 20:06:25 +0000 | [diff] [blame] | 61 | |
Denis Vlasenko | b5a122b | 2006-12-30 14:46:51 +0000 | [diff] [blame] | 62 | #if ENABLE_LOCALE_SUPPORT |
Rob Landley | d921b2e | 2006-08-03 15:41:12 +0000 | [diff] [blame] | 63 | #include <locale.h> |
Rob Landley | eb84a42 | 2006-09-20 21:41:13 +0000 | [diff] [blame] | 64 | #else |
Denis Vlasenko | b5a122b | 2006-12-30 14:46:51 +0000 | [diff] [blame] | 65 | #define setlocale(x,y) ((void)0) |
Rob Landley | d921b2e | 2006-08-03 15:41:12 +0000 | [diff] [blame] | 66 | #endif |
| 67 | |
Eric Andersen | 887ca79 | 2002-07-03 23:19:26 +0000 | [diff] [blame] | 68 | #include "pwd_.h" |
| 69 | #include "grp_.h" |
Denis Vlasenko | b5a122b | 2006-12-30 14:46:51 +0000 | [diff] [blame] | 70 | /* ifdef it out, because it may include <shadow.h> */ |
| 71 | /* and we may not even _have_ <shadow.h>! */ |
| 72 | #if ENABLE_FEATURE_SHADOWPASSWDS |
Eric Andersen | 27f64e1 | 2002-06-23 04:24:25 +0000 | [diff] [blame] | 73 | #include "shadow_.h" |
Denis Vlasenko | b5a122b | 2006-12-30 14:46:51 +0000 | [diff] [blame] | 74 | #endif |
Eric Andersen | 27f64e1 | 2002-06-23 04:24:25 +0000 | [diff] [blame] | 75 | |
Denis Vlasenko | 847fa77 | 2008-01-28 22:45:43 +0000 | [diff] [blame] | 76 | /* Some libc's don't declare it, help them */ |
| 77 | extern char **environ; |
| 78 | |
Denis Vlasenko | 7e3a5f5 | 2007-11-16 20:18:54 +0000 | [diff] [blame] | 79 | #if defined(__GLIBC__) && __GLIBC__ < 2 |
| 80 | int vdprintf(int d, const char *format, va_list ap); |
Rob Landley | 362dc2b | 2006-06-05 17:35:24 +0000 | [diff] [blame] | 81 | #endif |
Denis Vlasenko | 7e3a5f5 | 2007-11-16 20:18:54 +0000 | [diff] [blame] | 82 | /* klogctl is in libc's klog.h, but we cheat and not #include that */ |
| 83 | int klogctl(int type, char *b, int len); |
| 84 | /* This is declared here rather than #including <libgen.h> in order to avoid |
| 85 | * confusing the two versions of basename. See the dirname/basename man page |
| 86 | * for details. */ |
| 87 | char *dirname(char *path); |
| 88 | /* Include our own copy of struct sysinfo to avoid binary compatibility |
| 89 | * problems with Linux 2.4, which changed things. Grumble, grumble. */ |
| 90 | struct sysinfo { |
| 91 | long uptime; /* Seconds since boot */ |
| 92 | unsigned long loads[3]; /* 1, 5, and 15 minute load averages */ |
| 93 | unsigned long totalram; /* Total usable main memory size */ |
| 94 | unsigned long freeram; /* Available memory size */ |
| 95 | unsigned long sharedram; /* Amount of shared memory */ |
| 96 | unsigned long bufferram; /* Memory used by buffers */ |
| 97 | unsigned long totalswap; /* Total swap space size */ |
| 98 | unsigned long freeswap; /* swap space still available */ |
| 99 | unsigned short procs; /* Number of current processes */ |
| 100 | unsigned short pad; /* Padding needed for m68k */ |
| 101 | unsigned long totalhigh; /* Total high memory size */ |
| 102 | unsigned long freehigh; /* Available high memory size */ |
| 103 | unsigned int mem_unit; /* Memory unit size in bytes */ |
| 104 | char _f[20 - 2*sizeof(long) - sizeof(int)]; /* Padding: libc5 uses this.. */ |
| 105 | }; |
| 106 | int sysinfo(struct sysinfo* info); |
Rob Landley | 362dc2b | 2006-06-05 17:35:24 +0000 | [diff] [blame] | 107 | |
Denis Vlasenko | 7e3a5f5 | 2007-11-16 20:18:54 +0000 | [diff] [blame] | 108 | |
| 109 | /* Tested to work correctly with all int types (IIRC :]) */ |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 110 | #define MAXINT(T) (T)( \ |
| 111 | ((T)-1) > 0 \ |
| 112 | ? (T)-1 \ |
| 113 | : (T)~((T)1 << (sizeof(T)*8-1)) \ |
| 114 | ) |
| 115 | |
| 116 | #define MININT(T) (T)( \ |
| 117 | ((T)-1) > 0 \ |
| 118 | ? (T)0 \ |
| 119 | : ((T)1 << (sizeof(T)*8-1)) \ |
| 120 | ) |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 121 | |
Denis Vlasenko | 5625415 | 2006-10-07 16:24:46 +0000 | [diff] [blame] | 122 | /* Large file support */ |
Denis Vlasenko | 7e3a5f5 | 2007-11-16 20:18:54 +0000 | [diff] [blame] | 123 | /* Note that CONFIG_LFS=y forces bbox to be built with all common ops |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 124 | * (stat, lseek etc) mapped to "largefile" variants by libc. |
| 125 | * Practically it means that open() automatically has O_LARGEFILE added |
| 126 | * and all filesize/file_offset parameters and struct members are "large" |
| 127 | * (in today's world - signed 64bit). For full support of large files, |
| 128 | * we need a few helper #defines (below) and careful use of off_t |
| 129 | * instead of int/ssize_t. No lseek64(), O_LARGEFILE etc necessary */ |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 130 | #if ENABLE_LFS |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 131 | /* CONFIG_LFS is on */ |
| 132 | # if ULONG_MAX > 0xffffffff |
| 133 | /* "long" is long enough on this system */ |
Denis Vlasenko | 5fa7148 | 2006-12-12 22:31:15 +0000 | [diff] [blame] | 134 | # define XATOOFF(a) xatoul_range(a, 0, LONG_MAX) |
Denis Vlasenko | d686a04 | 2006-11-27 14:43:21 +0000 | [diff] [blame] | 135 | /* usage: sz = BB_STRTOOFF(s, NULL, 10); if (errno || sz < 0) die(); */ |
| 136 | # define BB_STRTOOFF bb_strtoul |
| 137 | # define STRTOOFF strtoul |
Denis Vlasenko | cf30cc8 | 2006-11-24 14:53:18 +0000 | [diff] [blame] | 138 | /* usage: printf("size: %"OFF_FMT"d (%"OFF_FMT"x)\n", sz, sz); */ |
| 139 | # define OFF_FMT "l" |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 140 | # else |
Denis Vlasenko | cba9ef5 | 2006-10-10 21:00:47 +0000 | [diff] [blame] | 141 | /* "long" is too short, need "long long" */ |
Denis Vlasenko | 5fa7148 | 2006-12-12 22:31:15 +0000 | [diff] [blame] | 142 | # define XATOOFF(a) xatoull_range(a, 0, LLONG_MAX) |
Denis Vlasenko | d686a04 | 2006-11-27 14:43:21 +0000 | [diff] [blame] | 143 | # define BB_STRTOOFF bb_strtoull |
| 144 | # define STRTOOFF strtoull |
Denis Vlasenko | cf30cc8 | 2006-11-24 14:53:18 +0000 | [diff] [blame] | 145 | # define OFF_FMT "ll" |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 146 | # endif |
Denis Vlasenko | 5625415 | 2006-10-07 16:24:46 +0000 | [diff] [blame] | 147 | #else |
Denis Vlasenko | 5fa7148 | 2006-12-12 22:31:15 +0000 | [diff] [blame] | 148 | /* CONFIG_LFS is off */ |
| 149 | # if UINT_MAX == 0xffffffff |
| 150 | /* While sizeof(off_t) == sizeof(int), off_t is typedef'ed to long anyway. |
| 151 | * gcc will throw warnings on printf("%d", off_t). Crap... */ |
| 152 | # define XATOOFF(a) xatoi_u(a) |
| 153 | # define BB_STRTOOFF bb_strtou |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 154 | # define STRTOOFF strtol |
Denis Vlasenko | 5fa7148 | 2006-12-12 22:31:15 +0000 | [diff] [blame] | 155 | # define OFF_FMT "l" |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 156 | # else |
Denis Vlasenko | 5fa7148 | 2006-12-12 22:31:15 +0000 | [diff] [blame] | 157 | # define XATOOFF(a) xatoul_range(a, 0, LONG_MAX) |
| 158 | # define BB_STRTOOFF bb_strtoul |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 159 | # define STRTOOFF strtol |
Denis Vlasenko | cf30cc8 | 2006-11-24 14:53:18 +0000 | [diff] [blame] | 160 | # define OFF_FMT "l" |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 161 | # endif |
Denis Vlasenko | 5625415 | 2006-10-07 16:24:46 +0000 | [diff] [blame] | 162 | #endif |
| 163 | /* scary. better ideas? (but do *test* them first!) */ |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 164 | #define OFF_T_MAX ((off_t)~((off_t)1 << (sizeof(off_t)*8-1))) |
Denis Vlasenko | 5625415 | 2006-10-07 16:24:46 +0000 | [diff] [blame] | 165 | |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 166 | /* Some useful definitions */ |
Bernhard Reutner-Fischer | 781e42d | 2006-05-26 14:41:40 +0000 | [diff] [blame] | 167 | #undef FALSE |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 168 | #define FALSE ((int) 0) |
Bernhard Reutner-Fischer | 781e42d | 2006-05-26 14:41:40 +0000 | [diff] [blame] | 169 | #undef TRUE |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 170 | #define TRUE ((int) 1) |
Bernhard Reutner-Fischer | 781e42d | 2006-05-26 14:41:40 +0000 | [diff] [blame] | 171 | #undef SKIP |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 172 | #define SKIP ((int) 2) |
| 173 | |
| 174 | /* for mtab.c */ |
| 175 | #define MTAB_GETMOUNTPT '1' |
| 176 | #define MTAB_GETDEVICE '2' |
| 177 | |
| 178 | #define BUF_SIZE 8192 |
| 179 | #define EXPAND_ALLOC 1024 |
| 180 | |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 181 | /* Macros for min/max. */ |
| 182 | #ifndef MIN |
| 183 | #define MIN(a,b) (((a)<(b))?(a):(b)) |
| 184 | #endif |
| 185 | |
| 186 | #ifndef MAX |
| 187 | #define MAX(a,b) (((a)>(b))?(a):(b)) |
| 188 | #endif |
| 189 | |
Bernhard Reutner-Fischer | 421d9e5 | 2006-04-03 16:39:31 +0000 | [diff] [blame] | 190 | /* buffer allocation schemes */ |
Denis Vlasenko | b5a122b | 2006-12-30 14:46:51 +0000 | [diff] [blame] | 191 | #if ENABLE_FEATURE_BUFFERS_GO_ON_STACK |
Denis Vlasenko | bbd695d | 2007-04-08 10:52:28 +0000 | [diff] [blame] | 192 | #define RESERVE_CONFIG_BUFFER(buffer,len) char buffer[len] |
Bernhard Reutner-Fischer | 421d9e5 | 2006-04-03 16:39:31 +0000 | [diff] [blame] | 193 | #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char buffer[len] |
| 194 | #define RELEASE_CONFIG_BUFFER(buffer) ((void)0) |
| 195 | #else |
Denis Vlasenko | b5a122b | 2006-12-30 14:46:51 +0000 | [diff] [blame] | 196 | #if ENABLE_FEATURE_BUFFERS_GO_IN_BSS |
Bernhard Reutner-Fischer | 421d9e5 | 2006-04-03 16:39:31 +0000 | [diff] [blame] | 197 | #define RESERVE_CONFIG_BUFFER(buffer,len) static char buffer[len] |
| 198 | #define RESERVE_CONFIG_UBUFFER(buffer,len) static unsigned char buffer[len] |
| 199 | #define RELEASE_CONFIG_BUFFER(buffer) ((void)0) |
| 200 | #else |
Denis Vlasenko | bbd695d | 2007-04-08 10:52:28 +0000 | [diff] [blame] | 201 | #define RESERVE_CONFIG_BUFFER(buffer,len) char *buffer = xmalloc(len) |
| 202 | #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char *buffer = xmalloc(len) |
| 203 | #define RELEASE_CONFIG_BUFFER(buffer) free(buffer) |
Bernhard Reutner-Fischer | 421d9e5 | 2006-04-03 16:39:31 +0000 | [diff] [blame] | 204 | #endif |
| 205 | #endif |
| 206 | |
Denis Vlasenko | fad2b86 | 2007-05-31 22:16:38 +0000 | [diff] [blame] | 207 | #if defined(__GLIBC__) |
| 208 | /* glibc uses __errno_location() to get a ptr to errno */ |
| 209 | /* We can just memorize it once - no multithreading in busybox :) */ |
| 210 | extern int *const bb_errno; |
| 211 | #undef errno |
| 212 | #define errno (*bb_errno) |
| 213 | #endif |
| 214 | |
Denis Vlasenko | 459be35 | 2007-06-17 19:09:05 +0000 | [diff] [blame] | 215 | unsigned long long monotonic_us(void); |
Denis Vlasenko | bd7bb29 | 2007-06-17 23:40:26 +0000 | [diff] [blame] | 216 | unsigned monotonic_sec(void); |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 217 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 218 | extern void chomp(char *s); |
| 219 | extern void trim(char *s); |
| 220 | extern char *skip_whitespace(const char *); |
Denis Vlasenko | 0de9375 | 2006-12-26 02:51:29 +0000 | [diff] [blame] | 221 | extern char *skip_non_whitespace(const char *); |
Paul Fox | 0b62158 | 2005-08-09 19:38:05 +0000 | [diff] [blame] | 222 | |
Denis Vlasenko | 6ef06ee | 2007-03-14 22:06:01 +0000 | [diff] [blame] | 223 | //TODO: supply a pointer to char[11] buffer (avoid statics)? |
Bernhard Reutner-Fischer | 835f575 | 2007-01-22 17:48:08 +0000 | [diff] [blame] | 224 | extern const char *bb_mode_string(mode_t mode); |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 225 | extern int is_directory(const char *name, int followLinks, struct stat *statBuf); |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 226 | extern int remove_file(const char *path, int flags); |
| 227 | extern int copy_file(const char *source, const char *dest, int flags); |
Denis Vlasenko | bbd695d | 2007-04-08 10:52:28 +0000 | [diff] [blame] | 228 | enum { |
Denis Vlasenko | d166f83 | 2007-07-05 00:12:55 +0000 | [diff] [blame] | 229 | ACTION_RECURSE = (1 << 0), |
| 230 | ACTION_FOLLOWLINKS = (1 << 1), |
| 231 | ACTION_FOLLOWLINKS_L0 = (1 << 2), |
| 232 | ACTION_DEPTHFIRST = (1 << 3), |
| 233 | /*ACTION_REVERSE = (1 << 4), - unused */ |
Denis Vlasenko | bbd695d | 2007-04-08 10:52:28 +0000 | [diff] [blame] | 234 | }; |
Bernhard Reutner-Fischer | 3e816c1 | 2007-03-29 10:30:50 +0000 | [diff] [blame] | 235 | extern int recursive_action(const char *fileName, unsigned flags, |
Denis Vlasenko | 8c35d65 | 2006-10-27 23:42:25 +0000 | [diff] [blame] | 236 | int (*fileAction) (const char *fileName, struct stat* statbuf, void* userData, int depth), |
| 237 | int (*dirAction) (const char *fileName, struct stat* statbuf, void* userData, int depth), |
Denis Vlasenko | d166f83 | 2007-07-05 00:12:55 +0000 | [diff] [blame] | 238 | void* userData, unsigned depth); |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 239 | extern int device_open(const char *device, int mode); |
Denis Vlasenko | 5014dad | 2008-02-27 11:54:59 +0000 | [diff] [blame^] | 240 | extern int getpty(char *line, int size); |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 241 | extern int get_console_fd(void); |
Denis Vlasenko | a41fdf3 | 2007-01-29 22:51:00 +0000 | [diff] [blame] | 242 | extern char *find_block_device(const char *path); |
Denis Vlasenko | 714701c | 2006-12-22 00:21:07 +0000 | [diff] [blame] | 243 | /* bb_copyfd_XX print read/write errors and return -1 if they occur */ |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 244 | extern off_t bb_copyfd_eof(int fd1, int fd2); |
Denis Vlasenko | 714701c | 2006-12-22 00:21:07 +0000 | [diff] [blame] | 245 | extern off_t bb_copyfd_size(int fd1, int fd2, off_t size); |
| 246 | extern void bb_copyfd_exact_size(int fd1, int fd2, off_t size); |
| 247 | /* "short" copy can be detected by return value < size */ |
| 248 | /* this helper yells "short read!" if param is not -1 */ |
| 249 | extern void complain_copyfd_and_die(off_t sz) ATTRIBUTE_NORETURN; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 250 | extern char bb_process_escape_sequence(const char **ptr); |
Denis Vlasenko | 818322b | 2007-09-24 18:27:04 +0000 | [diff] [blame] | 251 | /* xxxx_strip version can modify its parameter: |
| 252 | * "/" -> "/" |
| 253 | * "abc" -> "abc" |
| 254 | * "abc/def" -> "def" |
| 255 | * "abc/def/" -> "def" !! |
| 256 | */ |
| 257 | extern char *bb_get_last_path_component_strip(char *path); |
| 258 | /* "abc/def/" -> "" and it never modifies 'path' */ |
| 259 | extern char *bb_get_last_path_component_nostrip(const char *path); |
Denis Vlasenko | cad04ef | 2007-03-25 23:21:05 +0000 | [diff] [blame] | 260 | |
| 261 | int ndelay_on(int fd); |
| 262 | int ndelay_off(int fd); |
Denis Vlasenko | 96e1b38 | 2007-09-30 23:50:48 +0000 | [diff] [blame] | 263 | int close_on_exec_on(int fd); |
Denis Vlasenko | a27a11b | 2007-08-18 14:16:39 +0000 | [diff] [blame] | 264 | void xdup2(int, int); |
Denis Vlasenko | cad04ef | 2007-03-25 23:21:05 +0000 | [diff] [blame] | 265 | void xmove_fd(int, int); |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 266 | |
| 267 | |
Denis Vlasenko | bbd695d | 2007-04-08 10:52:28 +0000 | [diff] [blame] | 268 | DIR *xopendir(const char *path); |
| 269 | DIR *warn_opendir(const char *path); |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 270 | |
Denis Vlasenko | beffd43 | 2007-09-05 11:30:34 +0000 | [diff] [blame] | 271 | /* UNUSED: char *xmalloc_realpath(const char *path); */ |
| 272 | char *xmalloc_readlink(const char *path); |
Denis Vlasenko | 6ca0444 | 2007-02-11 16:19:28 +0000 | [diff] [blame] | 273 | char *xmalloc_readlink_or_warn(const char *path); |
Denis Vlasenko | beffd43 | 2007-09-05 11:30:34 +0000 | [diff] [blame] | 274 | char *xrealloc_getcwd_or_warn(char *cwd); |
Denis Vlasenko | 2856dab | 2007-04-01 01:18:20 +0000 | [diff] [blame] | 275 | |
Paul Fox | 599bbfb | 2007-11-08 20:00:36 +0000 | [diff] [blame] | 276 | char *xmalloc_follow_symlinks(const char *path); |
Denis Vlasenko | 473dae0 | 2007-04-11 07:04:23 +0000 | [diff] [blame] | 277 | |
Denis Vlasenko | 3319637 | 2008-02-23 01:25:38 +0000 | [diff] [blame] | 278 | enum { |
| 279 | /* bb_signals(BB_SIGS_FATAL, handler) catches all signals which |
| 280 | * otherwise would kill us, except for those resulting from bugs: |
| 281 | * SIGSEGV, SIGILL, SIGFPE. |
| 282 | * Other fatal signals not included (TODO?): |
| 283 | * SIGBUS Bus error (bad memory access) |
| 284 | * SIGPOLL Pollable event. Synonym of SIGIO |
| 285 | * SIGPROF Profiling timer expired |
| 286 | * SIGSYS Bad argument to routine |
| 287 | * SIGTRAP Trace/breakpoint trap |
| 288 | */ |
| 289 | BB_SIGS_FATAL = 0 |
| 290 | + (1 << SIGHUP) |
| 291 | + (1 << SIGINT) |
| 292 | + (1 << SIGTERM) |
| 293 | + (1 << SIGPIPE) // Write to pipe with no readers |
| 294 | + (1 << SIGQUIT) // Quit from keyboard |
| 295 | + (1 << SIGABRT) // Abort signal from abort(3) |
| 296 | + (1 << SIGALRM) // Timer signal from alarm(2) |
| 297 | + (1 << SIGVTALRM) // Virtual alarm clock |
| 298 | + (1 << SIGXCPU) // CPU time limit exceeded |
| 299 | + (1 << SIGXFSZ) // File size limit exceeded |
| 300 | + (1 << SIGUSR1) // Yes kids, these are also fatal! |
| 301 | + (1 << SIGUSR2) |
| 302 | + 0, |
| 303 | }; |
Denis Vlasenko | 25591c3 | 2008-02-16 22:58:56 +0000 | [diff] [blame] | 304 | void bb_signals(int sigs, void (*f)(int)); |
| 305 | /* Unlike signal() and bb_signals, sets handler with sigaction() |
| 306 | * and in a way that while signal handler is run, no other signals |
| 307 | * will be blocked: */ |
| 308 | void bb_signals_recursive(int sigs, void (*f)(int)); |
| 309 | void sig_block(int); |
| 310 | void sig_unblock(int); |
| 311 | /* UNUSED: void sig_blocknone(void); */ |
| 312 | void sig_pause(void); |
Denis Vlasenko | 400d8bb | 2008-02-24 13:36:01 +0000 | [diff] [blame] | 313 | void kill_myself_with_sig(int sig) ATTRIBUTE_NORETURN; |
Denis Vlasenko | 2856dab | 2007-04-01 01:18:20 +0000 | [diff] [blame] | 314 | |
Denis Vlasenko | 2856dab | 2007-04-01 01:18:20 +0000 | [diff] [blame] | 315 | |
Denis Vlasenko | 1bb552b | 2007-04-05 21:25:15 +0000 | [diff] [blame] | 316 | void xsetgid(gid_t gid); |
| 317 | void xsetuid(uid_t uid); |
| 318 | void xchdir(const char *path); |
Denis Vlasenko | 394eebe | 2008-02-25 20:30:24 +0000 | [diff] [blame] | 319 | void xchroot(const char *path); |
Denis Vlasenko | 1bb552b | 2007-04-05 21:25:15 +0000 | [diff] [blame] | 320 | void xsetenv(const char *key, const char *value); |
| 321 | void xunlink(const char *pathname); |
Denis Vlasenko | bbd695d | 2007-04-08 10:52:28 +0000 | [diff] [blame] | 322 | void xstat(const char *pathname, struct stat *buf); |
Denis Vlasenko | 1bb552b | 2007-04-05 21:25:15 +0000 | [diff] [blame] | 323 | int xopen(const char *pathname, int flags); |
| 324 | int xopen3(const char *pathname, int flags, int mode); |
Denis Vlasenko | 50f7f44 | 2007-04-11 23:20:53 +0000 | [diff] [blame] | 325 | int open_or_warn(const char *pathname, int flags); |
| 326 | int open3_or_warn(const char *pathname, int flags, int mode); |
Denis Vlasenko | cb448fe | 2008-02-17 14:28:53 +0000 | [diff] [blame] | 327 | void xrename(const char *oldpath, const char *newpath); |
| 328 | int rename_or_warn(const char *oldpath, const char *newpath); |
Denis Vlasenko | 1bb552b | 2007-04-05 21:25:15 +0000 | [diff] [blame] | 329 | off_t xlseek(int fd, off_t offset, int whence); |
| 330 | off_t fdlength(int fd); |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 331 | |
Denis Vlasenko | 3718832 | 2008-02-16 13:20:56 +0000 | [diff] [blame] | 332 | void xpipe(int filedes[2]); |
| 333 | /* In this form code with pipes is much more readable */ |
| 334 | struct fd_pair { int rd; int wr; }; |
| 335 | #define piped_pair(pair) pipe(&((pair).rd)) |
| 336 | #define xpiped_pair(pair) xpipe(&((pair).rd)) |
| 337 | |
Denis Vlasenko | ed6a49c | 2007-11-18 22:56:25 +0000 | [diff] [blame] | 338 | /* Useful for having small structure members/global variables */ |
| 339 | typedef int8_t socktype_t; |
| 340 | typedef int8_t family_t; |
| 341 | struct BUG_too_small { |
| 342 | char BUG_socktype_t_too_small[(0 |
| 343 | | SOCK_STREAM |
| 344 | | SOCK_DGRAM |
| 345 | | SOCK_RDM |
| 346 | | SOCK_SEQPACKET |
| 347 | | SOCK_RAW |
| 348 | ) <= 127 ? 1 : -1]; |
| 349 | char BUG_family_t_too_small[(0 |
| 350 | | AF_UNSPEC |
| 351 | | AF_INET |
| 352 | | AF_INET6 |
| 353 | | AF_UNIX |
Mike Frysinger | 9412ec7 | 2008-02-07 22:41:33 +0000 | [diff] [blame] | 354 | #ifdef AF_PACKET |
Denis Vlasenko | ed6a49c | 2007-11-18 22:56:25 +0000 | [diff] [blame] | 355 | | AF_PACKET |
Mike Frysinger | 9412ec7 | 2008-02-07 22:41:33 +0000 | [diff] [blame] | 356 | #endif |
| 357 | #ifdef AF_NETLINK |
Denis Vlasenko | ed6a49c | 2007-11-18 22:56:25 +0000 | [diff] [blame] | 358 | | AF_NETLINK |
Mike Frysinger | 9412ec7 | 2008-02-07 22:41:33 +0000 | [diff] [blame] | 359 | #endif |
Denis Vlasenko | ed6a49c | 2007-11-18 22:56:25 +0000 | [diff] [blame] | 360 | /* | AF_DECnet */ |
| 361 | /* | AF_IPX */ |
| 362 | ) <= 127 ? 1 : -1]; |
| 363 | }; |
| 364 | |
| 365 | |
Denis Vlasenko | 448f024 | 2007-01-22 22:43:05 +0000 | [diff] [blame] | 366 | int xsocket(int domain, int type, int protocol); |
| 367 | void xbind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen); |
| 368 | void xlisten(int s, int backlog); |
| 369 | void xconnect(int s, const struct sockaddr *s_addr, socklen_t addrlen); |
Denis Vlasenko | dbe6e66 | 2007-08-14 16:43:01 +0000 | [diff] [blame] | 370 | ssize_t xsendto(int s, const void *buf, size_t len, const struct sockaddr *to, |
Bernhard Reutner-Fischer | b290889 | 2007-04-12 11:34:39 +0000 | [diff] [blame] | 371 | socklen_t tolen); |
Denis Vlasenko | 7f175cc | 2007-08-16 18:27:47 +0000 | [diff] [blame] | 372 | /* SO_REUSEADDR allows a server to rebind to an address that is already |
| 373 | * "in use" by old connections to e.g. previous server instance which is |
| 374 | * killed or crashed. Without it bind will fail until all such connections |
| 375 | * time out. Linux does not allow multiple live binds on same ip:port |
| 376 | * regardless of SO_REUSEADDR (unlike some other flavors of Unix). |
| 377 | * Turn it on before you call bind(). */ |
Denis Vlasenko | a27a11b | 2007-08-18 14:16:39 +0000 | [diff] [blame] | 378 | void setsockopt_reuseaddr(int fd); /* On Linux this never fails. */ |
Denis Vlasenko | 448f024 | 2007-01-22 22:43:05 +0000 | [diff] [blame] | 379 | int setsockopt_broadcast(int fd); |
Denis Vlasenko | 85629f0 | 2007-01-22 09:36:41 +0000 | [diff] [blame] | 380 | /* NB: returns port in host byte order */ |
| 381 | unsigned bb_lookup_port(const char *port, const char *protocol, unsigned default_port); |
Denis Vlasenko | bbe5146 | 2007-01-10 20:19:56 +0000 | [diff] [blame] | 382 | typedef struct len_and_sockaddr { |
Denis Vlasenko | 0850cda | 2007-02-07 23:20:32 +0000 | [diff] [blame] | 383 | socklen_t len; |
Denis Vlasenko | bbe5146 | 2007-01-10 20:19:56 +0000 | [diff] [blame] | 384 | union { |
| 385 | struct sockaddr sa; |
| 386 | struct sockaddr_in sin; |
| 387 | #if ENABLE_FEATURE_IPV6 |
| 388 | struct sockaddr_in6 sin6; |
| 389 | #endif |
Bernhard Reutner-Fischer | 8c69afd | 2008-01-29 10:33:34 +0000 | [diff] [blame] | 390 | } u; |
Denis Vlasenko | bbe5146 | 2007-01-10 20:19:56 +0000 | [diff] [blame] | 391 | } len_and_sockaddr; |
Denis Vlasenko | 992e05b | 2007-04-03 01:13:04 +0000 | [diff] [blame] | 392 | enum { |
| 393 | LSA_SIZEOF_SA = sizeof( |
| 394 | union { |
| 395 | struct sockaddr sa; |
| 396 | struct sockaddr_in sin; |
| 397 | #if ENABLE_FEATURE_IPV6 |
| 398 | struct sockaddr_in6 sin6; |
| 399 | #endif |
| 400 | } |
| 401 | ) |
| 402 | }; |
Denis Vlasenko | 5c51a7c | 2007-06-05 20:08:11 +0000 | [diff] [blame] | 403 | /* Create stream socket, and allocate suitable lsa. |
| 404 | * (lsa of correct size and lsa->sa.sa_family (AF_INET/AF_INET6)) |
Denis Vlasenko | beffd43 | 2007-09-05 11:30:34 +0000 | [diff] [blame] | 405 | * af == AF_UNSPEC will result in trying to create IPv6 socket, |
| 406 | * and if kernel doesn't support it, IPv4. |
Denis Vlasenko | 5c51a7c | 2007-06-05 20:08:11 +0000 | [diff] [blame] | 407 | */ |
| 408 | int xsocket_type(len_and_sockaddr **lsap, USE_FEATURE_IPV6(int af,) int sock_type); |
Denis Vlasenko | 5d68724 | 2007-01-12 20:59:31 +0000 | [diff] [blame] | 409 | int xsocket_stream(len_and_sockaddr **lsap); |
Denis Vlasenko | 729bd9e | 2007-04-02 12:37:28 +0000 | [diff] [blame] | 410 | /* Create server socket bound to bindaddr:port. bindaddr can be NULL, |
Denis Vlasenko | 8e9ccba | 2007-01-11 16:50:23 +0000 | [diff] [blame] | 411 | * numeric IP ("N.N.N.N") or numeric IPv6 address, |
| 412 | * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT"). |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 413 | * Only if there is no suffix, port argument is used */ |
Denis Vlasenko | 7f175cc | 2007-08-16 18:27:47 +0000 | [diff] [blame] | 414 | /* NB: these set SO_REUSEADDR before bind */ |
Denis Vlasenko | 448f024 | 2007-01-22 22:43:05 +0000 | [diff] [blame] | 415 | int create_and_bind_stream_or_die(const char *bindaddr, int port); |
Denis Vlasenko | 729bd9e | 2007-04-02 12:37:28 +0000 | [diff] [blame] | 416 | int create_and_bind_dgram_or_die(const char *bindaddr, int port); |
Denis Vlasenko | 8e9ccba | 2007-01-11 16:50:23 +0000 | [diff] [blame] | 417 | /* Create client TCP socket connected to peer:port. Peer cannot be NULL. |
| 418 | * Peer can be numeric IP ("N.N.N.N"), numeric IPv6 address or hostname, |
| 419 | * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT"). |
| 420 | * If there is no suffix, port argument is used */ |
Denis Vlasenko | 448f024 | 2007-01-22 22:43:05 +0000 | [diff] [blame] | 421 | int create_and_connect_stream_or_die(const char *peer, int port); |
Denis Vlasenko | 8e9ccba | 2007-01-11 16:50:23 +0000 | [diff] [blame] | 422 | /* Connect to peer identified by lsa */ |
Denis Vlasenko | 448f024 | 2007-01-22 22:43:05 +0000 | [diff] [blame] | 423 | int xconnect_stream(const len_and_sockaddr *lsa); |
Denis Vlasenko | bbe5146 | 2007-01-10 20:19:56 +0000 | [diff] [blame] | 424 | /* Return malloc'ed len_and_sockaddr with socket address of host:port |
| 425 | * Currently will return IPv4 or IPv6 sockaddrs only |
| 426 | * (depending on host), but in theory nothing prevents e.g. |
Denis Vlasenko | 5870ad9 | 2007-02-04 02:39:55 +0000 | [diff] [blame] | 427 | * UNIX socket address being returned, IPX sockaddr etc... |
| 428 | * On error does bb_error_msg and returns NULL */ |
| 429 | len_and_sockaddr* host2sockaddr(const char *host, int port); |
Denis Vlasenko | e991303 | 2007-02-04 02:41:57 +0000 | [diff] [blame] | 430 | /* Version which dies on error */ |
Denis Vlasenko | 42823d5 | 2007-02-04 02:39:08 +0000 | [diff] [blame] | 431 | len_and_sockaddr* xhost2sockaddr(const char *host, int port); |
Denis Vlasenko | 9ca26d3 | 2007-02-09 17:32:16 +0000 | [diff] [blame] | 432 | len_and_sockaddr* xdotted2sockaddr(const char *host, int port); |
Denis Vlasenko | 9adc6ce | 2007-01-22 22:45:27 +0000 | [diff] [blame] | 433 | #if ENABLE_FEATURE_IPV6 |
| 434 | /* Same, useful if you want to force family (e.g. IPv6) */ |
Denis Vlasenko | e991303 | 2007-02-04 02:41:57 +0000 | [diff] [blame] | 435 | len_and_sockaddr* host_and_af2sockaddr(const char *host, int port, sa_family_t af); |
Denis Vlasenko | 42823d5 | 2007-02-04 02:39:08 +0000 | [diff] [blame] | 436 | len_and_sockaddr* xhost_and_af2sockaddr(const char *host, int port, sa_family_t af); |
Denis Vlasenko | a1042e9 | 2007-01-26 07:01:10 +0000 | [diff] [blame] | 437 | #else |
Denis Vlasenko | e991303 | 2007-02-04 02:41:57 +0000 | [diff] [blame] | 438 | /* [we evaluate af: think about "host_and_af2sockaddr(..., af++)"] */ |
| 439 | #define host_and_af2sockaddr(host, port, af) ((void)(af), host2sockaddr((host), (port))) |
Denis Vlasenko | 42823d5 | 2007-02-04 02:39:08 +0000 | [diff] [blame] | 440 | #define xhost_and_af2sockaddr(host, port, af) ((void)(af), xhost2sockaddr((host), (port))) |
Denis Vlasenko | 9adc6ce | 2007-01-22 22:45:27 +0000 | [diff] [blame] | 441 | #endif |
Denis Vlasenko | 7f175cc | 2007-08-16 18:27:47 +0000 | [diff] [blame] | 442 | /* Assign sin[6]_port member if the socket is an AF_INET[6] one, |
Denis Vlasenko | 85629f0 | 2007-01-22 09:36:41 +0000 | [diff] [blame] | 443 | * otherwise no-op. Useful for ftp. |
Denis Vlasenko | 8e9ccba | 2007-01-11 16:50:23 +0000 | [diff] [blame] | 444 | * NB: does NOT do htons() internally, just direct assignment. */ |
Denis Vlasenko | 448f024 | 2007-01-22 22:43:05 +0000 | [diff] [blame] | 445 | void set_nport(len_and_sockaddr *lsa, unsigned port); |
Denis Vlasenko | 85629f0 | 2007-01-22 09:36:41 +0000 | [diff] [blame] | 446 | /* Retrieve sin[6]_port or return -1 for non-INET[6] lsa's */ |
Denis Vlasenko | 2856dab | 2007-04-01 01:18:20 +0000 | [diff] [blame] | 447 | int get_nport(const struct sockaddr *sa); |
Denis Vlasenko | 9adc6ce | 2007-01-22 22:45:27 +0000 | [diff] [blame] | 448 | /* Reverse DNS. Returns NULL on failure. */ |
Denis Vlasenko | a27a11b | 2007-08-18 14:16:39 +0000 | [diff] [blame] | 449 | char* xmalloc_sockaddr2host(const struct sockaddr *sa); |
Denis Vlasenko | 9adc6ce | 2007-01-22 22:45:27 +0000 | [diff] [blame] | 450 | /* This one doesn't append :PORTNUM */ |
Denis Vlasenko | a27a11b | 2007-08-18 14:16:39 +0000 | [diff] [blame] | 451 | char* xmalloc_sockaddr2host_noport(const struct sockaddr *sa); |
Denis Vlasenko | 9adc6ce | 2007-01-22 22:45:27 +0000 | [diff] [blame] | 452 | /* This one also doesn't fall back to dotted IP (returns NULL) */ |
Denis Vlasenko | a27a11b | 2007-08-18 14:16:39 +0000 | [diff] [blame] | 453 | char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa); |
Denis Vlasenko | 448f024 | 2007-01-22 22:43:05 +0000 | [diff] [blame] | 454 | /* inet_[ap]ton on steroids */ |
Denis Vlasenko | a27a11b | 2007-08-18 14:16:39 +0000 | [diff] [blame] | 455 | char* xmalloc_sockaddr2dotted(const struct sockaddr *sa); |
| 456 | char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa); |
Denis Vlasenko | 85629f0 | 2007-01-22 09:36:41 +0000 | [diff] [blame] | 457 | // "old" (ipv4 only) API |
Denis Vlasenko | 729bd9e | 2007-04-02 12:37:28 +0000 | [diff] [blame] | 458 | // users: traceroute.c hostname.c - use _list_ of all IPs |
Denis Vlasenko | 448f024 | 2007-01-22 22:43:05 +0000 | [diff] [blame] | 459 | struct hostent *xgethostbyname(const char *name); |
Denis Vlasenko | 729bd9e | 2007-04-02 12:37:28 +0000 | [diff] [blame] | 460 | // Also mount.c and inetd.c are using gethostbyname(), |
Denis Vlasenko | e991303 | 2007-02-04 02:41:57 +0000 | [diff] [blame] | 461 | // + inet_common.c has additional IPv4-only stuff |
Denis Vlasenko | c8717cd | 2006-11-22 16:10:39 +0000 | [diff] [blame] | 462 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 463 | |
Denis Vlasenko | 29fe726 | 2007-04-05 20:26:28 +0000 | [diff] [blame] | 464 | void socket_want_pktinfo(int fd); |
| 465 | ssize_t send_to_from(int fd, void *buf, size_t len, int flags, |
| 466 | const struct sockaddr *from, const struct sockaddr *to, |
| 467 | socklen_t tolen); |
| 468 | ssize_t recv_from_to(int fd, void *buf, size_t len, int flags, |
| 469 | struct sockaddr *from, struct sockaddr *to, |
| 470 | socklen_t sa_size); |
| 471 | |
Denis Vlasenko | 4daad90 | 2007-09-27 10:20:47 +0000 | [diff] [blame] | 472 | char *xstrdup(const char *s); |
| 473 | char *xstrndup(const char *s, int n); |
| 474 | char *safe_strncpy(char *dst, const char *src, size_t size); |
| 475 | /* Guaranteed to NOT be a macro (smallest code). Saves nearly 2k on uclibc. |
Denis Vlasenko | 7c654ae | 2007-09-27 10:26:59 +0000 | [diff] [blame] | 476 | * But potentially slow, don't use in one-billion-times loops */ |
Denis Vlasenko | 4daad90 | 2007-09-27 10:20:47 +0000 | [diff] [blame] | 477 | int bb_putchar(int ch); |
| 478 | char *xasprintf(const char *format, ...) __attribute__ ((format (printf, 1, 2))); |
Denis Vlasenko | d3c042f | 2007-12-30 01:59:53 +0000 | [diff] [blame] | 479 | /* Prints unprintable chars ch as ^C or M-c to file |
| 480 | * (M-c is used only if ch is ORed with PRINTABLE_META), |
| 481 | * else it is printed as-is (except for ch = 0x9b) */ |
| 482 | enum { PRINTABLE_META = 0x100 }; |
| 483 | void fputc_printable(int ch, FILE *file); |
Denis Vlasenko | 9f73944 | 2006-12-16 23:49:13 +0000 | [diff] [blame] | 484 | // gcc-4.1.1 still isn't good enough at optimizing it |
| 485 | // (+200 bytes compared to macro) |
Denis Vlasenko | 3ad5d0c | 2007-06-12 20:54:54 +0000 | [diff] [blame] | 486 | //static ALWAYS_INLINE |
Denis Vlasenko | 9f73944 | 2006-12-16 23:49:13 +0000 | [diff] [blame] | 487 | //int LONE_DASH(const char *s) { return s[0] == '-' && !s[1]; } |
Denis Vlasenko | 3ad5d0c | 2007-06-12 20:54:54 +0000 | [diff] [blame] | 488 | //static ALWAYS_INLINE |
Denis Vlasenko | 9f73944 | 2006-12-16 23:49:13 +0000 | [diff] [blame] | 489 | //int NOT_LONE_DASH(const char *s) { return s[0] != '-' || s[1]; } |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 490 | #define LONE_DASH(s) ((s)[0] == '-' && !(s)[1]) |
Denis Vlasenko | 9f73944 | 2006-12-16 23:49:13 +0000 | [diff] [blame] | 491 | #define NOT_LONE_DASH(s) ((s)[0] != '-' || (s)[1]) |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 492 | #define LONE_CHAR(s,c) ((s)[0] == (c) && !(s)[1]) |
Denis Vlasenko | bf66fbc | 2006-12-21 13:23:14 +0000 | [diff] [blame] | 493 | #define NOT_LONE_CHAR(s,c) ((s)[0] != (c) || (s)[1]) |
Denis Vlasenko | 16abcd9 | 2007-04-13 23:59:52 +0000 | [diff] [blame] | 494 | #define DOT_OR_DOTDOT(s) ((s)[0] == '.' && (!(s)[1] || ((s)[1] == '.' && !(s)[2]))) |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 495 | |
| 496 | /* dmalloc will redefine these to it's own implementation. It is safe |
| 497 | * to have the prototypes here unconditionally. */ |
Denis Vlasenko | c6758a0 | 2007-04-10 21:40:19 +0000 | [diff] [blame] | 498 | extern void *malloc_or_warn(size_t size); |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 499 | extern void *xmalloc(size_t size); |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 500 | extern void *xzalloc(size_t size); |
Denis Vlasenko | c6758a0 | 2007-04-10 21:40:19 +0000 | [diff] [blame] | 501 | extern void *xrealloc(void *old, size_t size); |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 502 | |
Denis Vlasenko | ea62077 | 2006-10-14 02:23:43 +0000 | [diff] [blame] | 503 | extern ssize_t safe_read(int fd, void *buf, size_t count); |
Denis Vlasenko | e376d45 | 2008-02-20 22:23:24 +0000 | [diff] [blame] | 504 | extern ssize_t nonblock_safe_read(int fd, void *buf, size_t count); |
Denis Vlasenko | 394eebe | 2008-02-25 20:30:24 +0000 | [diff] [blame] | 505 | // NB: will return short read on error, not -1, |
| 506 | // if some data was read before error occurred |
Denis Vlasenko | ea62077 | 2006-10-14 02:23:43 +0000 | [diff] [blame] | 507 | extern ssize_t full_read(int fd, void *buf, size_t count); |
| 508 | extern void xread(int fd, void *buf, size_t count); |
| 509 | extern unsigned char xread_char(int fd); |
Denis Vlasenko | d67cef2 | 2007-06-13 06:47:47 +0000 | [diff] [blame] | 510 | // Read one line a-la fgets. Uses one read(), works only on seekable streams |
Denis Vlasenko | ea62077 | 2006-10-14 02:23:43 +0000 | [diff] [blame] | 511 | extern char *reads(int fd, char *buf, size_t count); |
Denis Vlasenko | d67cef2 | 2007-06-13 06:47:47 +0000 | [diff] [blame] | 512 | // Read one line a-la fgets. Reads byte-by-byte. |
| 513 | // Useful when it is important to not read ahead. |
Denis Vlasenko | e376d45 | 2008-02-20 22:23:24 +0000 | [diff] [blame] | 514 | // Bytes are appended to pfx (which must be malloced, or NULL). |
Denis Vlasenko | d67cef2 | 2007-06-13 06:47:47 +0000 | [diff] [blame] | 515 | extern char *xmalloc_reads(int fd, char *pfx); |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 516 | extern ssize_t read_close(int fd, void *buf, size_t count); |
| 517 | extern ssize_t open_read_close(const char *filename, void *buf, size_t count); |
| 518 | extern void *xmalloc_open_read_close(const char *filename, size_t *sizep); |
Denis Vlasenko | ea62077 | 2006-10-14 02:23:43 +0000 | [diff] [blame] | 519 | |
| 520 | extern ssize_t safe_write(int fd, const void *buf, size_t count); |
Denis Vlasenko | 394eebe | 2008-02-25 20:30:24 +0000 | [diff] [blame] | 521 | // NB: will return short write on error, not -1, |
| 522 | // if some data was written before error occurred |
Denis Vlasenko | ea62077 | 2006-10-14 02:23:43 +0000 | [diff] [blame] | 523 | extern ssize_t full_write(int fd, const void *buf, size_t count); |
Denis Vlasenko | 2d27e4c | 2006-11-25 23:50:28 +0000 | [diff] [blame] | 524 | extern void xwrite(int fd, const void *buf, size_t count); |
Denis Vlasenko | ea62077 | 2006-10-14 02:23:43 +0000 | [diff] [blame] | 525 | |
Denis Vlasenko | 1de0830 | 2006-10-26 23:32:43 +0000 | [diff] [blame] | 526 | /* Reads and prints to stdout till eof, then closes FILE. Exits on error: */ |
Denis Vlasenko | ddec5af | 2006-10-26 23:25:17 +0000 | [diff] [blame] | 527 | extern void xprint_and_close_file(FILE *file); |
Denis Vlasenko | abee3d0 | 2007-12-26 20:44:45 +0000 | [diff] [blame] | 528 | /* Reads up to (and including) TERMINATING_STRING: */ |
Denis Vlasenko | ddec5af | 2006-10-26 23:25:17 +0000 | [diff] [blame] | 529 | extern char *xmalloc_fgets_str(FILE *file, const char *terminating_string); |
Denis Vlasenko | abee3d0 | 2007-12-26 20:44:45 +0000 | [diff] [blame] | 530 | /* Chops off TERMINATING_STRING: from the end: */ |
| 531 | extern char *xmalloc_fgetline_str(FILE *file, const char *terminating_string); |
| 532 | /* Reads up to (and including) "\n" or NUL byte */ |
| 533 | extern char *xmalloc_fgets(FILE *file); |
Denis Vlasenko | ddec5af | 2006-10-26 23:25:17 +0000 | [diff] [blame] | 534 | /* Chops off '\n' from the end, unlike fgets: */ |
| 535 | extern char *xmalloc_getline(FILE *file); |
| 536 | extern char *bb_get_chunk_from_file(FILE *file, int *end); |
| 537 | extern void die_if_ferror(FILE *file, const char *msg); |
| 538 | extern void die_if_ferror_stdout(void); |
| 539 | extern void xfflush_stdout(void); |
Denis Vlasenko | f0ed376 | 2006-10-26 23:21:47 +0000 | [diff] [blame] | 540 | extern void fflush_stdout_and_exit(int retval) ATTRIBUTE_NORETURN; |
Denis Vlasenko | ddec5af | 2006-10-26 23:25:17 +0000 | [diff] [blame] | 541 | extern int fclose_if_not_stdin(FILE *file); |
| 542 | extern FILE *xfopen(const char *filename, const char *mode); |
| 543 | /* Prints warning to stderr and returns NULL on failure: */ |
| 544 | extern FILE *fopen_or_warn(const char *filename, const char *mode); |
| 545 | /* "Opens" stdin if filename is special, else just opens file: */ |
| 546 | extern FILE *fopen_or_warn_stdin(const char *filename); |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 547 | |
Denis Vlasenko | 5d61e71 | 2007-09-27 10:09:59 +0000 | [diff] [blame] | 548 | /* Wrapper which restarts poll on EINTR or ENOMEM. |
| 549 | * On other errors complains [perror("poll")] and returns. |
| 550 | * Warning! May take (much) longer than timeout_ms to return! |
| 551 | * If this is a problem, use bare poll and open-code EINTR/ENOMEM handling */ |
| 552 | int safe_poll(struct pollfd *ufds, nfds_t nfds, int timeout_ms); |
| 553 | |
Denis Vlasenko | 6f1713f | 2008-02-25 23:23:58 +0000 | [diff] [blame] | 554 | char *safe_gethostname(void); |
| 555 | |
Bernhard Reutner-Fischer | 8b1fab2 | 2007-04-10 09:38:07 +0000 | [diff] [blame] | 556 | /* Convert each alpha char in str to lower-case */ |
Denis Vlasenko | 5d61e71 | 2007-09-27 10:09:59 +0000 | [diff] [blame] | 557 | char* str_tolower(char *str); |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 558 | |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 559 | char *utoa(unsigned n); |
| 560 | char *itoa(int n); |
Denis Vlasenko | 10457b9 | 2007-03-27 22:01:31 +0000 | [diff] [blame] | 561 | /* Returns a pointer past the formatted number, does NOT null-terminate */ |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 562 | char *utoa_to_buf(unsigned n, char *buf, unsigned buflen); |
| 563 | char *itoa_to_buf(int n, char *buf, unsigned buflen); |
Denis Vlasenko | 56ea65c | 2008-01-06 03:26:53 +0000 | [diff] [blame] | 564 | /* Intelligent formatters of bignums */ |
| 565 | void smart_ulltoa4(unsigned long long ul, char buf[5], const char *scale); |
| 566 | void smart_ulltoa5(unsigned long long ul, char buf[5], const char *scale); |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 567 | //TODO: provide pointer to buf (avoid statics)? |
| 568 | const char *make_human_readable_str(unsigned long long size, |
| 569 | unsigned long block_size, unsigned long display_unit); |
| 570 | /* Put a string of hex bytes ("1b2e66fe"...), return advanced pointer */ |
| 571 | char *bin2hex(char *buf, const char *cp, int count); |
Rob Landley | c5b1d4d | 2006-03-13 15:45:16 +0000 | [diff] [blame] | 572 | |
Denis Vlasenko | 1bab1de | 2007-07-27 15:30:39 +0000 | [diff] [blame] | 573 | /* Last element is marked by mult == 0 */ |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 574 | struct suffix_mult { |
Denis Vlasenko | f868963 | 2007-07-27 15:06:25 +0000 | [diff] [blame] | 575 | char suffix[4]; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 576 | unsigned mult; |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 577 | }; |
Denis Vlasenko | ed836cd | 2006-11-25 14:44:13 +0000 | [diff] [blame] | 578 | #include "xatonum.h" |
Denis Vlasenko | 1385899 | 2006-10-08 12:49:22 +0000 | [diff] [blame] | 579 | /* Specialized: */ |
Denis Vlasenko | 1385899 | 2006-10-08 12:49:22 +0000 | [diff] [blame] | 580 | /* Using xatoi() instead of naive atoi() is not always convenient - |
| 581 | * in many places people want *non-negative* values, but store them |
| 582 | * in signed int. Therefore we need this one: |
| 583 | * dies if input is not in [0, INT_MAX] range. Also will reject '-0' etc */ |
| 584 | int xatoi_u(const char *numstr); |
Denis Vlasenko | 1385899 | 2006-10-08 12:49:22 +0000 | [diff] [blame] | 585 | /* Useful for reading port numbers */ |
| 586 | uint16_t xatou16(const char *numstr); |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 587 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 588 | |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 589 | /* These parse entries in /etc/passwd and /etc/group. This is desirable |
| 590 | * for BusyBox since we want to avoid using the glibc NSS stuff, which |
Bernhard Reutner-Fischer | d5bd137 | 2005-09-20 21:06:17 +0000 | [diff] [blame] | 591 | * increases target size and is often not needed on embedded systems. */ |
Denis Vlasenko | 2405ad6 | 2007-01-19 21:24:17 +0000 | [diff] [blame] | 592 | long xuname2uid(const char *name); |
| 593 | long xgroup2gid(const char *name); |
Denis Vlasenko | 9a44c4f | 2006-12-28 05:44:47 +0000 | [diff] [blame] | 594 | /* wrapper: allows string to contain numeric uid or gid */ |
Denis Vlasenko | 2405ad6 | 2007-01-19 21:24:17 +0000 | [diff] [blame] | 595 | unsigned long get_ug_id(const char *s, long (*xname2id)(const char *)); |
Denis Vlasenko | 9a44c4f | 2006-12-28 05:44:47 +0000 | [diff] [blame] | 596 | /* from chpst. Does not die, returns 0 on failure */ |
Denis Vlasenko | de59c0f | 2006-10-05 22:50:22 +0000 | [diff] [blame] | 597 | struct bb_uidgid_t { |
Denis Vlasenko | 150f402 | 2007-01-13 21:06:21 +0000 | [diff] [blame] | 598 | uid_t uid; |
| 599 | gid_t gid; |
Denis Vlasenko | de59c0f | 2006-10-05 22:50:22 +0000 | [diff] [blame] | 600 | }; |
Denis Vlasenko | cce3858 | 2007-02-26 22:47:42 +0000 | [diff] [blame] | 601 | /* always sets uid and gid */ |
Denis Vlasenko | 2405ad6 | 2007-01-19 21:24:17 +0000 | [diff] [blame] | 602 | int get_uidgid(struct bb_uidgid_t*, const char*, int numeric_ok); |
Denis Vlasenko | cce3858 | 2007-02-26 22:47:42 +0000 | [diff] [blame] | 603 | /* chown-like handling of "user[:[group]" */ |
| 604 | void parse_chown_usergroup_or_die(struct bb_uidgid_t *u, char *user_group); |
Denis Vlasenko | 3734b94 | 2007-07-27 11:20:10 +0000 | [diff] [blame] | 605 | /* bb_getpwuid, bb_getgrgid: |
Denis Vlasenko | 1d10aaf | 2007-07-27 11:22:34 +0000 | [diff] [blame] | 606 | * bb_getXXXid(buf, bufsz, id) - copy user/group name or id |
| 607 | * as a string to buf, return user/group name or NULL |
| 608 | * bb_getXXXid(NULL, 0, id) - return user/group name or NULL |
| 609 | * bb_getXXXid(NULL, -1, id) - return user/group name or exit |
Denis Vlasenko | 3734b94 | 2007-07-27 11:20:10 +0000 | [diff] [blame] | 610 | */ |
| 611 | char *bb_getpwuid(char *name, int bufsize, long uid); |
| 612 | char *bb_getgrgid(char *group, int bufsize, long gid); |
Denis Vlasenko | 2405ad6 | 2007-01-19 21:24:17 +0000 | [diff] [blame] | 613 | /* versions which cache results (useful for ps, ls etc) */ |
| 614 | const char* get_cached_username(uid_t uid); |
| 615 | const char* get_cached_groupname(gid_t gid); |
| 616 | void clear_username_cache(void); |
| 617 | /* internally usernames are saved in fixed-sized char[] buffers */ |
| 618 | enum { USERNAME_MAX_SIZE = 16 - sizeof(int) }; |
Denis Vlasenko | de59c0f | 2006-10-05 22:50:22 +0000 | [diff] [blame] | 619 | |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 620 | |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 621 | int execable_file(const char *name); |
| 622 | char *find_execable(const char *filename); |
| 623 | int exists_execable(const char *filename); |
| 624 | |
Denis Vlasenko | 7e0fbf9 | 2007-09-04 19:33:22 +0000 | [diff] [blame] | 625 | /* BB_EXECxx always execs (it's not doing NOFORK/NOEXEC stuff), |
| 626 | * but it may exec busybox and call applet instead of searching PATH. |
| 627 | */ |
Denis Vlasenko | 80d14be | 2007-04-10 23:03:30 +0000 | [diff] [blame] | 628 | #if ENABLE_FEATURE_PREFER_APPLETS |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 629 | int bb_execvp(const char *file, char *const argv[]); |
| 630 | #define BB_EXECVP(prog,cmd) bb_execvp(prog,cmd) |
| 631 | #define BB_EXECLP(prog,cmd,...) \ |
Denis Vlasenko | 1aa7e47 | 2007-11-28 06:49:03 +0000 | [diff] [blame] | 632 | execlp((find_applet_by_name(prog) >= 0) ? CONFIG_BUSYBOX_EXEC_PATH : prog, \ |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 633 | cmd, __VA_ARGS__) |
| 634 | #else |
| 635 | #define BB_EXECVP(prog,cmd) execvp(prog,cmd) |
| 636 | #define BB_EXECLP(prog,cmd,...) execlp(prog,cmd, __VA_ARGS__) |
| 637 | #endif |
| 638 | |
| 639 | /* NOMMU friendy fork+exec */ |
| 640 | pid_t spawn(char **argv); |
| 641 | pid_t xspawn(char **argv); |
Denis Vlasenko | cd7001f | 2007-04-09 21:32:30 +0000 | [diff] [blame] | 642 | |
Denis Vlasenko | 284d0fa | 2008-02-16 13:18:17 +0000 | [diff] [blame] | 643 | int safe_waitpid(int pid, int *wstat, int options); |
| 644 | /* Unlike waitpid, waits ONLY for one process. |
Denis Vlasenko | cd7001f | 2007-04-09 21:32:30 +0000 | [diff] [blame] | 645 | * It's safe to pass negative 'pids' from failed [v]fork - |
Denis Vlasenko | 473dae0 | 2007-04-11 07:04:23 +0000 | [diff] [blame] | 646 | * wait4pid will return -1 (and will not clobber [v]fork's errno). |
Denis Vlasenko | cd7001f | 2007-04-09 21:32:30 +0000 | [diff] [blame] | 647 | * IOW: rc = wait4pid(spawn(argv)); |
| 648 | * if (rc < 0) bb_perror_msg("%s", argv[0]); |
| 649 | * if (rc > 0) bb_error_msg("exit code: %d", rc); |
| 650 | */ |
Denis Vlasenko | 473dae0 | 2007-04-11 07:04:23 +0000 | [diff] [blame] | 651 | int wait4pid(int pid); |
Denis Vlasenko | fb0eba7 | 2008-01-02 19:55:04 +0000 | [diff] [blame] | 652 | int wait_any_nohang(int *wstat); |
Denis Vlasenko | cd7001f | 2007-04-09 21:32:30 +0000 | [diff] [blame] | 653 | #define wait_crashed(w) ((w) & 127) |
| 654 | #define wait_exitcode(w) ((w) >> 8) |
| 655 | #define wait_stopsig(w) ((w) >> 8) |
| 656 | #define wait_stopped(w) (((w) & 127) == 127) |
| 657 | /* wait4pid(spawn(argv)) + NOFORK/NOEXEC (if configured) */ |
| 658 | int spawn_and_wait(char **argv); |
Denis Vlasenko | 18e19f2 | 2007-04-28 16:43:18 +0000 | [diff] [blame] | 659 | struct nofork_save_area { |
Denis Vlasenko | b055001 | 2007-05-24 12:18:16 +0000 | [diff] [blame] | 660 | jmp_buf die_jmp; |
Denis Vlasenko | 82d38da | 2007-10-10 14:38:47 +0000 | [diff] [blame] | 661 | const char *applet_name; |
Denis Vlasenko | 18e19f2 | 2007-04-28 16:43:18 +0000 | [diff] [blame] | 662 | int xfunc_error_retval; |
| 663 | uint32_t option_mask32; |
| 664 | int die_sleep; |
| 665 | smallint saved; |
| 666 | }; |
| 667 | void save_nofork_data(struct nofork_save_area *save); |
| 668 | void restore_nofork_data(struct nofork_save_area *save); |
| 669 | /* Does NOT check that applet is NOFORK, just blindly runs it */ |
Denis Vlasenko | 1aa7e47 | 2007-11-28 06:49:03 +0000 | [diff] [blame] | 670 | int run_nofork_applet(int applet_no, char **argv); |
| 671 | int run_nofork_applet_prime(struct nofork_save_area *old, int applet_no, char **argv); |
Denis Vlasenko | cd7001f | 2007-04-09 21:32:30 +0000 | [diff] [blame] | 672 | |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 673 | /* Helpers for daemonization. |
Denis Vlasenko | 53091ec | 2007-03-26 13:35:09 +0000 | [diff] [blame] | 674 | * |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 675 | * bb_daemonize(flags) = daemonize, does not compile on NOMMU |
Denis Vlasenko | 53091ec | 2007-03-26 13:35:09 +0000 | [diff] [blame] | 676 | * |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 677 | * bb_daemonize_or_rexec(flags, argv) = daemonizes on MMU (and ignores argv), |
| 678 | * rexec's itself on NOMMU with argv passed as command line. |
| 679 | * Thus bb_daemonize_or_rexec may cause your <applet>_main() to be re-executed |
| 680 | * from the start. (It will detect it and not reexec again second time). |
| 681 | * You have to audit carefully that you don't do something twice as a result |
| 682 | * (opening files/sockets, parsing config files etc...)! |
| 683 | * |
| 684 | * Both of the above will redirect fd 0,1,2 to /dev/null and drop ctty |
| 685 | * (will do setsid()). |
| 686 | * |
Denis Vlasenko | 53091ec | 2007-03-26 13:35:09 +0000 | [diff] [blame] | 687 | * forkexit_or_rexec(argv) = bare-bones "fork + parent exits" on MMU, |
| 688 | * "vfork + re-exec ourself" on NOMMU. No fd redirection, no setsid(). |
| 689 | * Currently used for openvt. On MMU ignores argv. |
| 690 | * |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 691 | * Helper for network daemons in foreground mode: |
Denis Vlasenko | 53091ec | 2007-03-26 13:35:09 +0000 | [diff] [blame] | 692 | * |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 693 | * bb_sanitize_stdio() = make sure that fd 0,1,2 are opened by opening them |
| 694 | * to /dev/null if they are not. |
| 695 | */ |
| 696 | enum { |
| 697 | DAEMON_CHDIR_ROOT = 1, |
Denis Vlasenko | a1b16f4 | 2007-07-31 17:09:44 +0000 | [diff] [blame] | 698 | DAEMON_DEVNULL_STDIO = 2, |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 699 | DAEMON_CLOSE_EXTRA_FDS = 4, |
| 700 | DAEMON_ONLY_SANITIZE = 8, /* internal use */ |
| 701 | }; |
Denis Vlasenko | 473dae0 | 2007-04-11 07:04:23 +0000 | [diff] [blame] | 702 | #if BB_MMU |
Denis Vlasenko | 53091ec | 2007-03-26 13:35:09 +0000 | [diff] [blame] | 703 | void forkexit_or_rexec(void); |
Denis Vlasenko | 367960b | 2007-08-18 14:20:21 +0000 | [diff] [blame] | 704 | enum { re_execed = 0 }; |
Denis Vlasenko | 53091ec | 2007-03-26 13:35:09 +0000 | [diff] [blame] | 705 | # define forkexit_or_rexec(argv) forkexit_or_rexec() |
| 706 | # define bb_daemonize_or_rexec(flags, argv) bb_daemonize_or_rexec(flags) |
| 707 | # define bb_daemonize(flags) bb_daemonize_or_rexec(flags, bogus) |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 708 | #else |
Denis Vlasenko | 367960b | 2007-08-18 14:20:21 +0000 | [diff] [blame] | 709 | void re_exec(char **argv) ATTRIBUTE_NORETURN; |
Denis Vlasenko | 53091ec | 2007-03-26 13:35:09 +0000 | [diff] [blame] | 710 | void forkexit_or_rexec(char **argv); |
Bernhard Reutner-Fischer | 163516d | 2007-04-10 14:16:19 +0000 | [diff] [blame] | 711 | extern bool re_execed; |
Denis Vlasenko | 05743d7 | 2008-02-10 12:10:08 +0000 | [diff] [blame] | 712 | int BUG_fork_is_unavailable_on_nommu(void); |
| 713 | int BUG_daemon_is_unavailable_on_nommu(void); |
| 714 | void BUG_bb_daemonize_is_unavailable_on_nommu(void); |
Denis Vlasenko | 53091ec | 2007-03-26 13:35:09 +0000 | [diff] [blame] | 715 | # define fork() BUG_fork_is_unavailable_on_nommu() |
| 716 | # define daemon(a,b) BUG_daemon_is_unavailable_on_nommu() |
| 717 | # define bb_daemonize(a) BUG_bb_daemonize_is_unavailable_on_nommu() |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 718 | #endif |
| 719 | void bb_daemonize_or_rexec(int flags, char **argv); |
| 720 | void bb_sanitize_stdio(void); |
Denis Vlasenko | c9ca0a3 | 2008-02-18 11:08:33 +0000 | [diff] [blame] | 721 | /* Clear dangerous stuff, set PATH. Return 1 if was run by different user. */ |
| 722 | int sanitize_env_if_suid(void); |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 723 | |
| 724 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 725 | extern const char *opt_complementary; |
Denis Vlasenko | c61852a | 2006-11-29 11:09:43 +0000 | [diff] [blame] | 726 | #if ENABLE_GETOPT_LONG |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 727 | #define No_argument "\0" |
| 728 | #define Required_argument "\001" |
| 729 | #define Optional_argument "\002" |
| 730 | extern const char *applet_long_options; |
Denis Vlasenko | c61852a | 2006-11-29 11:09:43 +0000 | [diff] [blame] | 731 | #endif |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 732 | extern uint32_t option_mask32; |
Denis Vlasenko | d37f222 | 2007-08-19 13:42:08 +0000 | [diff] [blame] | 733 | extern uint32_t getopt32(char **argv, const char *applet_opts, ...); |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 734 | |
| 735 | |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 736 | typedef struct llist_t { |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 737 | char *data; |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 738 | struct llist_t *link; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 739 | } llist_t; |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 740 | void llist_add_to(llist_t **old_head, void *data); |
| 741 | void llist_add_to_end(llist_t **list_head, void *data); |
| 742 | void *llist_pop(llist_t **elm); |
| 743 | void llist_unlink(llist_t **head, llist_t *elm); |
| 744 | void llist_free(llist_t *elm, void (*freeit)(void *data)); |
| 745 | llist_t *llist_rev(llist_t *list); |
Denis Vlasenko | 4b924f3 | 2007-05-30 00:29:55 +0000 | [diff] [blame] | 746 | /* BTW, surprisingly, changing API to |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 747 | * llist_t *llist_add_to(llist_t *old_head, void *data) |
| 748 | * etc does not result in smaller code... */ |
| 749 | |
Denis Vlasenko | 80edead | 2007-08-02 22:31:05 +0000 | [diff] [blame] | 750 | /* start_stop_daemon and udhcpc are special - they want |
| 751 | * to create pidfiles regardless of FEATURE_PIDFILE */ |
Denis Vlasenko | 1caca34 | 2007-08-02 10:14:29 +0000 | [diff] [blame] | 752 | #if ENABLE_FEATURE_PIDFILE || defined(WANT_PIDFILE) |
Denis Vlasenko | bb23c06 | 2007-08-15 20:05:37 +0000 | [diff] [blame] | 753 | /* True only if we created pidfile which is *file*, not /dev/null etc */ |
| 754 | extern smallint wrote_pidfile; |
| 755 | void write_pidfile(const char *path); |
| 756 | #define remove_pidfile(path) do { if (wrote_pidfile) unlink(path); } while (0) |
Denis Vlasenko | 10457b9 | 2007-03-27 22:01:31 +0000 | [diff] [blame] | 757 | #else |
Denis Vlasenko | bb23c06 | 2007-08-15 20:05:37 +0000 | [diff] [blame] | 758 | enum { wrote_pidfile = 0 }; |
| 759 | #define write_pidfile(path) ((void)0) |
| 760 | #define remove_pidfile(path) ((void)0) |
Denis Vlasenko | 10457b9 | 2007-03-27 22:01:31 +0000 | [diff] [blame] | 761 | #endif |
| 762 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 763 | enum { |
| 764 | LOGMODE_NONE = 0, |
Denis Vlasenko | 1b97efd | 2007-08-17 19:18:06 +0000 | [diff] [blame] | 765 | LOGMODE_STDIO = (1 << 0), |
| 766 | LOGMODE_SYSLOG = (1 << 1) * ENABLE_FEATURE_SYSLOG, |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 767 | LOGMODE_BOTH = LOGMODE_SYSLOG + LOGMODE_STDIO, |
| 768 | }; |
| 769 | extern const char *msg_eol; |
Denis Vlasenko | 04c99eb | 2007-04-07 00:44:31 +0000 | [diff] [blame] | 770 | extern smallint logmode; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 771 | extern int die_sleep; |
| 772 | extern int xfunc_error_retval; |
Denis Vlasenko | 3f3aa2a | 2007-04-09 21:35:07 +0000 | [diff] [blame] | 773 | extern jmp_buf die_jmp; |
Denis Vlasenko | 335b63d | 2007-04-10 21:38:30 +0000 | [diff] [blame] | 774 | extern void xfunc_die(void) ATTRIBUTE_NORETURN; |
Denis Vlasenko | 9b49a5e | 2007-10-11 10:05:36 +0000 | [diff] [blame] | 775 | extern void bb_show_usage(void) ATTRIBUTE_NORETURN; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 776 | extern void bb_error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))); |
| 777 | extern void bb_error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))); |
| 778 | extern void bb_perror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))); |
Denis Vlasenko | 0c97c9d | 2007-10-01 11:58:38 +0000 | [diff] [blame] | 779 | extern void bb_simple_perror_msg(const char *s); |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 780 | extern void bb_perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))); |
Denis Vlasenko | 0c97c9d | 2007-10-01 11:58:38 +0000 | [diff] [blame] | 781 | extern void bb_simple_perror_msg_and_die(const char *s) __attribute__ ((noreturn)); |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 782 | extern void bb_herror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))); |
| 783 | extern void bb_herror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))); |
| 784 | extern void bb_perror_nomsg_and_die(void) ATTRIBUTE_NORETURN; |
| 785 | extern void bb_perror_nomsg(void); |
| 786 | extern void bb_info_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))); |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 787 | extern void bb_verror_msg(const char *s, va_list p, const char *strerr); |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 788 | |
Denis Vlasenko | 9b49a5e | 2007-10-11 10:05:36 +0000 | [diff] [blame] | 789 | /* We need to export XXX_main from libbusybox |
| 790 | * only if we build "individual" binaries |
| 791 | */ |
| 792 | #if ENABLE_FEATURE_INDIVIDUAL |
| 793 | #define MAIN_EXTERNALLY_VISIBLE EXTERNALLY_VISIBLE |
| 794 | #else |
| 795 | #define MAIN_EXTERNALLY_VISIBLE |
| 796 | #endif |
| 797 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 798 | |
Denis Vlasenko | bf66fbc | 2006-12-21 13:23:14 +0000 | [diff] [blame] | 799 | /* applets which are useful from another applets */ |
Denis Vlasenko | 06af216 | 2007-02-03 17:28:39 +0000 | [diff] [blame] | 800 | int bb_cat(char** argv); |
Denis Vlasenko | fe5e23b | 2007-11-24 02:23:51 +0000 | [diff] [blame] | 801 | int echo_main(int argc, char** argv) MAIN_EXTERNALLY_VISIBLE; |
Denis Vlasenko | 9b49a5e | 2007-10-11 10:05:36 +0000 | [diff] [blame] | 802 | int test_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
| 803 | int kill_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
Denis Vlasenko | 703e202 | 2007-01-22 14:12:08 +0000 | [diff] [blame] | 804 | #if ENABLE_ROUTE |
Denis Vlasenko | 06af216 | 2007-02-03 17:28:39 +0000 | [diff] [blame] | 805 | void bb_displayroutes(int noresolve, int netstatfmt); |
| 806 | #endif |
Denis Vlasenko | 9b49a5e | 2007-10-11 10:05:36 +0000 | [diff] [blame] | 807 | int chown_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
Denis Vlasenko | 06af216 | 2007-02-03 17:28:39 +0000 | [diff] [blame] | 808 | #if ENABLE_GUNZIP |
Denis Vlasenko | 9b49a5e | 2007-10-11 10:05:36 +0000 | [diff] [blame] | 809 | int gunzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
Denis Vlasenko | 703e202 | 2007-01-22 14:12:08 +0000 | [diff] [blame] | 810 | #endif |
Denis Vlasenko | 77f1ec1 | 2007-10-13 03:36:03 +0000 | [diff] [blame] | 811 | #if ENABLE_BUNZIP2 |
| 812 | int bunzip2_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
| 813 | #endif |
Denis Vlasenko | fe42d17 | 2007-03-14 00:08:28 +0000 | [diff] [blame] | 814 | int bbunpack(char **argv, |
Denis Vlasenko | c86e052 | 2007-03-20 11:30:28 +0000 | [diff] [blame] | 815 | char* (*make_new_name)(char *filename), |
| 816 | USE_DESKTOP(long long) int (*unpacker)(void) |
Denis Vlasenko | fe42d17 | 2007-03-14 00:08:28 +0000 | [diff] [blame] | 817 | ); |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 818 | |
Denis Vlasenko | 270c17c | 2006-12-26 17:40:33 +0000 | [diff] [blame] | 819 | |
| 820 | /* Networking */ |
| 821 | int create_icmp_socket(void); |
| 822 | int create_icmp6_socket(void); |
| 823 | /* interface.c */ |
Denis Vlasenko | f5294e1 | 2007-04-14 10:09:57 +0000 | [diff] [blame] | 824 | /* This structure defines protocol families and their handlers. */ |
| 825 | struct aftype { |
| 826 | const char *name; |
| 827 | const char *title; |
| 828 | int af; |
| 829 | int alen; |
| 830 | char *(*print) (unsigned char *); |
| 831 | const char *(*sprint) (struct sockaddr *, int numeric); |
| 832 | int (*input) (/*int type,*/ const char *bufp, struct sockaddr *); |
| 833 | void (*herror) (char *text); |
| 834 | int (*rprint) (int options); |
| 835 | int (*rinput) (int typ, int ext, char **argv); |
| 836 | |
| 837 | /* may modify src */ |
| 838 | int (*getmask) (char *src, struct sockaddr * mask, char *name); |
| 839 | }; |
| 840 | /* This structure defines hardware protocols and their handlers. */ |
| 841 | struct hwtype { |
| 842 | const char *name; |
| 843 | const char *title; |
| 844 | int type; |
| 845 | int alen; |
| 846 | char *(*print) (unsigned char *); |
| 847 | int (*input) (const char *, struct sockaddr *); |
| 848 | int (*activate) (int fd); |
| 849 | int suppress_null_addr; |
| 850 | }; |
Denis Vlasenko | 1b16bda | 2007-06-19 11:10:02 +0000 | [diff] [blame] | 851 | extern smallint interface_opt_a; |
Denis Vlasenko | 270c17c | 2006-12-26 17:40:33 +0000 | [diff] [blame] | 852 | int display_interfaces(char *ifname); |
Denis Vlasenko | 1cc7022 | 2007-03-15 19:46:43 +0000 | [diff] [blame] | 853 | const struct aftype *get_aftype(const char *name); |
Denis Vlasenko | fa85b86 | 2007-01-07 01:24:12 +0000 | [diff] [blame] | 854 | const struct hwtype *get_hwtype(const char *name); |
| 855 | const struct hwtype *get_hwntype(int type); |
Denis Vlasenko | 270c17c | 2006-12-26 17:40:33 +0000 | [diff] [blame] | 856 | |
| 857 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 858 | #ifndef BUILD_INDIVIDUAL |
Denis Vlasenko | 1aa7e47 | 2007-11-28 06:49:03 +0000 | [diff] [blame] | 859 | extern int find_applet_by_name(const char *name); |
Denis Vlasenko | 32b633a | 2007-04-09 03:05:48 +0000 | [diff] [blame] | 860 | /* Returns only if applet is not found. */ |
Denis Vlasenko | f5294e1 | 2007-04-14 10:09:57 +0000 | [diff] [blame] | 861 | extern void run_applet_and_exit(const char *name, char **argv); |
Denis Vlasenko | 1aa7e47 | 2007-11-28 06:49:03 +0000 | [diff] [blame] | 862 | extern void run_applet_no_and_exit(int a, char **argv) ATTRIBUTE_NORETURN; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 863 | #endif |
| 864 | |
Mike Frysinger | 9412ec7 | 2008-02-07 22:41:33 +0000 | [diff] [blame] | 865 | #ifdef HAVE_MNTENT_H |
Denis Vlasenko | bf295dd | 2007-04-05 21:57:47 +0000 | [diff] [blame] | 866 | extern int match_fstype(const struct mntent *mt, const char *fstypes); |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 867 | extern struct mntent *find_mount_point(const char *name, const char *table); |
Mike Frysinger | 9412ec7 | 2008-02-07 22:41:33 +0000 | [diff] [blame] | 868 | #endif |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 869 | extern void erase_mtab(const char * name); |
| 870 | extern unsigned int tty_baud_to_value(speed_t speed); |
| 871 | extern speed_t tty_value_to_baud(unsigned int value); |
| 872 | extern void bb_warn_ignoring_args(int n); |
| 873 | |
| 874 | extern int get_linux_version_code(void); |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 875 | |
Rob Landley | 1d589b2 | 2005-11-29 23:47:10 +0000 | [diff] [blame] | 876 | extern char *query_loop(const char *device); |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 877 | extern int del_loop(const char *device); |
Denis Vlasenko | 0e2c9fb | 2007-08-03 14:16:24 +0000 | [diff] [blame] | 878 | /* If *devname is not NULL, use that name, otherwise try to find free one, |
| 879 | * malloc and return it in *devname. |
| 880 | * return value: 1: read-only loopdev was setup, 0: rw, < 0: error */ |
| 881 | extern int set_loop(char **devname, const char *file, unsigned long long offset); |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 882 | |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 883 | |
Denis Vlasenko | 6ef06ee | 2007-03-14 22:06:01 +0000 | [diff] [blame] | 884 | //TODO: pass buf pointer or return allocated buf (avoid statics)? |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 885 | char *bb_askpass(int timeout, const char * prompt); |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 886 | int bb_ask_confirmation(void); |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 887 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 888 | extern int bb_parse_mode(const char* s, mode_t* theMode); |
| 889 | |
Eric Andersen | e5dfced | 2001-04-09 22:48:12 +0000 | [diff] [blame] | 890 | char *concat_path_file(const char *path, const char *filename); |
Glenn L McGrath | 393183d | 2003-05-26 14:07:50 +0000 | [diff] [blame] | 891 | char *concat_subpath_file(const char *path, const char *filename); |
Denis Vlasenko | dc757aa | 2007-06-30 08:04:05 +0000 | [diff] [blame] | 892 | const char *bb_basename(const char *name); |
Denis Vlasenko | 7e84e53 | 2007-05-08 17:52:17 +0000 | [diff] [blame] | 893 | /* NB: can violate const-ness (similarly to strchr) */ |
Eric Andersen | c911a43 | 2001-05-15 17:42:16 +0000 | [diff] [blame] | 894 | char *last_char_is(const char *s, int c); |
Eric Andersen | e5dfced | 2001-04-09 22:48:12 +0000 | [diff] [blame] | 895 | |
Denis Vlasenko | 4921b54 | 2007-02-03 02:17:41 +0000 | [diff] [blame] | 896 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 897 | USE_DESKTOP(long long) int uncompress(int fd_in, int fd_out); |
| 898 | int inflate(int in, int out); |
Glenn L McGrath | 4949faf | 2001-04-11 16:23:35 +0000 | [diff] [blame] | 899 | |
Denis Vlasenko | 1457915 | 2006-10-26 01:09:46 +0000 | [diff] [blame] | 900 | |
Denis Vlasenko | 97a8dd3 | 2006-10-01 15:55:11 +0000 | [diff] [blame] | 901 | int bb_make_directory(char *path, long mode, int flags); |
Matt Kraai | ceeff73 | 2001-06-21 19:41:37 +0000 | [diff] [blame] | 902 | |
Denis Vlasenko | a77947f | 2006-09-27 14:19:16 +0000 | [diff] [blame] | 903 | int get_signum(const char *name); |
| 904 | const char *get_signame(int number); |
Denis Vlasenko | a4f4de9 | 2007-09-30 16:32:01 +0000 | [diff] [blame] | 905 | void print_signames(void); |
Rob Landley | c9c1a41 | 2006-07-12 19:17:55 +0000 | [diff] [blame] | 906 | |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 907 | char *bb_simplify_path(const char *path); |
Eric Andersen | 3450636 | 2001-08-02 05:02:46 +0000 | [diff] [blame] | 908 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 909 | #define FAIL_DELAY 3 |
| 910 | extern void bb_do_delay(int seconds); |
| 911 | extern void change_identity(const struct passwd *pw); |
| 912 | extern const char *change_identity_e2str(const struct passwd *pw); |
Denis Vlasenko | a2f6101 | 2007-09-10 13:15:28 +0000 | [diff] [blame] | 913 | extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args) ATTRIBUTE_NORETURN; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 914 | extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args); |
Denis Vlasenko | b5a122b | 2006-12-30 14:46:51 +0000 | [diff] [blame] | 915 | #if ENABLE_SELINUX |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 916 | extern void renew_current_security_context(void); |
| 917 | extern void set_current_security_context(security_context_t sid); |
Denis Vlasenko | 1203c9b | 2007-03-11 22:16:02 +0000 | [diff] [blame] | 918 | extern context_t set_security_context_component(security_context_t cur_context, |
| 919 | char *user, char *role, char *type, char *range); |
Denis Vlasenko | 39c651e | 2007-03-12 18:22:55 +0000 | [diff] [blame] | 920 | extern void setfscreatecon_or_die(security_context_t scontext); |
Denis Vlasenko | 2edbc2a | 2007-10-20 02:00:49 +0000 | [diff] [blame] | 921 | extern void selinux_preserve_fcontext(int fdesc); |
| 922 | #else |
| 923 | #define selinux_preserve_fcontext(fdesc) ((void)0) |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 924 | #endif |
Denis Vlasenko | d46d3c2 | 2007-02-06 19:28:50 +0000 | [diff] [blame] | 925 | extern void selinux_or_die(void); |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 926 | extern int restricted_shell(const char *shell); |
Denis Vlasenko | a2f6101 | 2007-09-10 13:15:28 +0000 | [diff] [blame] | 927 | |
| 928 | /* setup_environment: |
| 929 | * if loginshell = 1: cd(pw->pw_dir), clear environment, then set |
| 930 | * TERM=(old value) |
| 931 | * USER=pw->pw_name, LOGNAME=pw->pw_name |
| 932 | * PATH=bb_default_[root_]path |
| 933 | * HOME=pw->pw_dir |
| 934 | * SHELL=shell |
| 935 | * else if changeenv = 1: |
| 936 | * if not root (if pw->pw_uid != 0): |
| 937 | * USER=pw->pw_name, LOGNAME=pw->pw_name |
| 938 | * HOME=pw->pw_dir |
| 939 | * SHELL=shell |
| 940 | * else does nothing |
| 941 | */ |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 942 | extern void setup_environment(const char *shell, int loginshell, int changeenv, const struct passwd *pw); |
| 943 | extern int correct_password(const struct passwd *pw); |
Denis Vlasenko | 21d1014 | 2007-07-20 21:28:41 +0000 | [diff] [blame] | 944 | /* Returns a ptr to static storage */ |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 945 | extern char *pw_encrypt(const char *clear, const char *salt); |
| 946 | extern int obscure(const char *old, const char *newval, const struct passwd *pwdp); |
Denis Vlasenko | bfc3d82 | 2007-11-04 04:10:17 +0000 | [diff] [blame] | 947 | |
| 948 | int index_in_str_array(const char *const string_array[], const char *key); |
| 949 | int index_in_strings(const char *strings, const char *key); |
| 950 | int index_in_substr_array(const char *const string_array[], const char *key); |
| 951 | int index_in_substrings(const char *strings, const char *key); |
| 952 | const char *nth_string(const char *strings, int n); |
| 953 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 954 | extern void print_login_issue(const char *issue_file, const char *tty); |
| 955 | extern void print_login_prompt(void); |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 956 | |
Denis Vlasenko | 21d1014 | 2007-07-20 21:28:41 +0000 | [diff] [blame] | 957 | /* rnd is additional random input. New one is returned. |
| 958 | * Useful if you call crypt_make_salt many times in a row: |
| 959 | * rnd = crypt_make_salt(buf1, 4, 0); |
| 960 | * rnd = crypt_make_salt(buf2, 4, rnd); |
| 961 | * rnd = crypt_make_salt(buf3, 4, rnd); |
| 962 | * (otherwise we risk having same salt generated) |
| 963 | */ |
| 964 | extern int crypt_make_salt(char *p, int cnt, int rnd); |
| 965 | |
| 966 | /* Returns number of lines changed, or -1 on error */ |
| 967 | extern int update_passwd(const char *filename, const char *username, |
| 968 | const char *new_pw); |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 969 | |
Denis Vlasenko | f893da8 | 2007-08-09 08:27:24 +0000 | [diff] [blame] | 970 | /* NB: typically you want to pass fd 0, not 1. Think 'applet | grep something' */ |
| 971 | int get_terminal_width_height(int fd, int *width, int *height); |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 972 | |
Denis Vlasenko | fb79a2e | 2007-07-14 22:07:14 +0000 | [diff] [blame] | 973 | int ioctl_or_perror(int fd, int request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5))); |
| 974 | void ioctl_or_perror_and_die(int fd, int request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5))); |
| 975 | #if ENABLE_IOCTL_HEX2STR_ERROR |
| 976 | int bb_ioctl_or_warn(int fd, int request, void *argp, const char *ioctl_name); |
| 977 | void bb_xioctl(int fd, int request, void *argp, const char *ioctl_name); |
| 978 | #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp,#request) |
| 979 | #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp,#request) |
| 980 | #else |
| 981 | int bb_ioctl_or_warn(int fd, int request, void *argp); |
| 982 | void bb_xioctl(int fd, int request, void *argp); |
| 983 | #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp) |
| 984 | #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp) |
| 985 | #endif |
| 986 | |
Denis Vlasenko | 6ef06ee | 2007-03-14 22:06:01 +0000 | [diff] [blame] | 987 | char *is_in_ino_dev_hashtable(const struct stat *statbuf); |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 988 | void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name); |
| 989 | void reset_ino_dev_hashtable(void); |
Denis Vlasenko | 0b35470 | 2006-11-24 14:54:27 +0000 | [diff] [blame] | 990 | #ifdef __GLIBC__ |
| 991 | /* At least glibc has horrendously large inline for this, so wrap it */ |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 992 | unsigned long long bb_makedev(unsigned int major, unsigned int minor); |
Denis Vlasenko | 0b35470 | 2006-11-24 14:54:27 +0000 | [diff] [blame] | 993 | #undef makedev |
| 994 | #define makedev(a,b) bb_makedev(a,b) |
| 995 | #endif |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 996 | |
| 997 | |
Denis Vlasenko | 38f6319 | 2007-01-22 09:03:07 +0000 | [diff] [blame] | 998 | #if ENABLE_FEATURE_EDITING |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 999 | /* It's NOT just ENABLEd or disabled. It's a number: */ |
Denis Vlasenko | 38f6319 | 2007-01-22 09:03:07 +0000 | [diff] [blame] | 1000 | #ifdef CONFIG_FEATURE_EDITING_HISTORY |
| 1001 | #define MAX_HISTORY (CONFIG_FEATURE_EDITING_HISTORY + 0) |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1002 | #else |
| 1003 | #define MAX_HISTORY 0 |
| 1004 | #endif |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 1005 | typedef struct line_input_t { |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1006 | int flags; |
| 1007 | const char *path_lookup; |
| 1008 | #if MAX_HISTORY |
| 1009 | int cnt_history; |
| 1010 | int cur_history; |
Denis Vlasenko | 38f6319 | 2007-01-22 09:03:07 +0000 | [diff] [blame] | 1011 | USE_FEATURE_EDITING_SAVEHISTORY(const char *hist_file;) |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1012 | char *history[MAX_HISTORY + 1]; |
| 1013 | #endif |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 1014 | } line_input_t; |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1015 | enum { |
| 1016 | DO_HISTORY = 1 * (MAX_HISTORY > 0), |
Denis Vlasenko | 38f6319 | 2007-01-22 09:03:07 +0000 | [diff] [blame] | 1017 | SAVE_HISTORY = 2 * (MAX_HISTORY > 0) * ENABLE_FEATURE_EDITING_SAVEHISTORY, |
| 1018 | TAB_COMPLETION = 4 * ENABLE_FEATURE_TAB_COMPLETION, |
| 1019 | USERNAME_COMPLETION = 8 * ENABLE_FEATURE_USERNAME_COMPLETION, |
| 1020 | VI_MODE = 0x10 * ENABLE_FEATURE_EDITING_VI, |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1021 | WITH_PATH_LOOKUP = 0x20, |
| 1022 | FOR_SHELL = DO_HISTORY | SAVE_HISTORY | TAB_COMPLETION | USERNAME_COMPLETION, |
| 1023 | }; |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1024 | line_input_t *new_line_input_t(int flags); |
Denis Vlasenko | 6a5377a | 2007-09-25 18:35:28 +0000 | [diff] [blame] | 1025 | /* Returns: |
Denis Vlasenko | 80667e3 | 2008-02-02 18:35:55 +0000 | [diff] [blame] | 1026 | * -1 on read errors or EOF, or on bare Ctrl-D, |
| 1027 | * 0 on ctrl-C (the line entered is still returned in 'command'), |
Denis Vlasenko | 6a5377a | 2007-09-25 18:35:28 +0000 | [diff] [blame] | 1028 | * >0 length of input string, including terminating '\n' |
Denis Vlasenko | 6a5377a | 2007-09-25 18:35:28 +0000 | [diff] [blame] | 1029 | */ |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1030 | int read_line_input(const char* prompt, char* command, int maxsize, line_input_t *state); |
| 1031 | #else |
| 1032 | int read_line_input(const char* prompt, char* command, int maxsize); |
| 1033 | #define read_line_input(prompt, command, maxsize, state) \ |
| 1034 | read_line_input(prompt, command, maxsize) |
| 1035 | #endif |
| 1036 | |
| 1037 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1038 | #ifndef COMM_LEN |
| 1039 | #ifdef TASK_COMM_LEN |
Denis Vlasenko | fa07680 | 2006-11-05 00:38:51 +0000 | [diff] [blame] | 1040 | enum { COMM_LEN = TASK_COMM_LEN }; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1041 | #else |
| 1042 | /* synchronize with sizeof(task_struct.comm) in /usr/include/linux/sched.h */ |
Denis Vlasenko | fa07680 | 2006-11-05 00:38:51 +0000 | [diff] [blame] | 1043 | enum { COMM_LEN = 16 }; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1044 | #endif |
| 1045 | #endif |
Denis Vlasenko | 512499c | 2007-08-26 18:23:13 +0000 | [diff] [blame] | 1046 | typedef struct procps_status_t { |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 1047 | DIR *dir; |
Denis Vlasenko | 512499c | 2007-08-26 18:23:13 +0000 | [diff] [blame] | 1048 | uint8_t shift_pages_to_bytes; |
| 1049 | uint8_t shift_pages_to_kb; |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 1050 | /* Fields are set to 0/NULL if failed to determine (or not requested) */ |
Denis Vlasenko | f7d07b1 | 2007-06-30 08:03:26 +0000 | [diff] [blame] | 1051 | char *argv0; |
Denis Vlasenko | 0696b8a | 2007-06-06 07:40:16 +0000 | [diff] [blame] | 1052 | USE_SELINUX(char *context;) |
| 1053 | /* Everything below must contain no ptrs to malloc'ed data: |
| 1054 | * it is memset(0) for each process in procps_scan() */ |
Denis Vlasenko | fc1e995 | 2007-08-29 18:23:36 +0000 | [diff] [blame] | 1055 | unsigned long vsz, rss; /* we round it to kbytes */ |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 1056 | unsigned long stime, utime; |
Denis Vlasenko | 5fee2e1 | 2008-01-05 03:26:41 +0000 | [diff] [blame] | 1057 | unsigned long start_time; |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 1058 | unsigned pid; |
| 1059 | unsigned ppid; |
| 1060 | unsigned pgid; |
| 1061 | unsigned sid; |
| 1062 | unsigned uid; |
| 1063 | unsigned gid; |
Denis Vlasenko | 31789a8 | 2007-06-19 14:43:17 +0000 | [diff] [blame] | 1064 | unsigned tty_major,tty_minor; |
Denis Vlasenko | ff6e8e2 | 2007-09-08 16:51:19 +0000 | [diff] [blame] | 1065 | #if ENABLE_FEATURE_TOPMEM |
| 1066 | unsigned long mapped_rw; |
| 1067 | unsigned long mapped_ro; |
| 1068 | unsigned long shared_clean; |
| 1069 | unsigned long shared_dirty; |
| 1070 | unsigned long private_clean; |
| 1071 | unsigned long private_dirty; |
| 1072 | unsigned long stack; |
| 1073 | #endif |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 1074 | char state[4]; |
Denis Vlasenko | 98ebab8 | 2007-06-30 14:47:41 +0000 | [diff] [blame] | 1075 | /* basename of executable in exec(2), read from /proc/N/stat |
| 1076 | * (if executable is symlink or script, it is NOT replaced |
| 1077 | * by link target or interpreter name) */ |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 1078 | char comm[COMM_LEN]; |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 1079 | /* user/group? - use passwd/group parsing functions */ |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1080 | } procps_status_t; |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 1081 | enum { |
| 1082 | PSSCAN_PID = 1 << 0, |
| 1083 | PSSCAN_PPID = 1 << 1, |
| 1084 | PSSCAN_PGID = 1 << 2, |
| 1085 | PSSCAN_SID = 1 << 3, |
| 1086 | PSSCAN_UIDGID = 1 << 4, |
| 1087 | PSSCAN_COMM = 1 << 5, |
Denis Vlasenko | 98ebab8 | 2007-06-30 14:47:41 +0000 | [diff] [blame] | 1088 | /* PSSCAN_CMD = 1 << 6, - use read_cmdline instead */ |
Denis Vlasenko | f7d07b1 | 2007-06-30 08:03:26 +0000 | [diff] [blame] | 1089 | PSSCAN_ARGV0 = 1 << 7, |
Denis Vlasenko | 98ebab8 | 2007-06-30 14:47:41 +0000 | [diff] [blame] | 1090 | /* PSSCAN_EXE = 1 << 8, - not implemented */ |
Denis Vlasenko | f7d07b1 | 2007-06-30 08:03:26 +0000 | [diff] [blame] | 1091 | PSSCAN_STATE = 1 << 9, |
| 1092 | PSSCAN_VSZ = 1 << 10, |
| 1093 | PSSCAN_RSS = 1 << 11, |
| 1094 | PSSCAN_STIME = 1 << 12, |
| 1095 | PSSCAN_UTIME = 1 << 13, |
| 1096 | PSSCAN_TTY = 1 << 14, |
Denis Vlasenko | ff6e8e2 | 2007-09-08 16:51:19 +0000 | [diff] [blame] | 1097 | PSSCAN_SMAPS = (1 << 15) * ENABLE_FEATURE_TOPMEM, |
Denis Vlasenko | 72e1c89 | 2007-09-29 22:26:01 +0000 | [diff] [blame] | 1098 | PSSCAN_ARGVN = (1 << 16) * (ENABLE_PGREP | ENABLE_PKILL), |
| 1099 | USE_SELINUX(PSSCAN_CONTEXT = 1 << 17,) |
Denis Vlasenko | 5fee2e1 | 2008-01-05 03:26:41 +0000 | [diff] [blame] | 1100 | PSSCAN_START_TIME = 1 << 18, |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 1101 | /* These are all retrieved from proc/NN/stat in one go: */ |
| 1102 | PSSCAN_STAT = PSSCAN_PPID | PSSCAN_PGID | PSSCAN_SID |
| 1103 | | PSSCAN_COMM | PSSCAN_STATE |
Denis Vlasenko | 516a0ca | 2007-04-19 14:46:14 +0000 | [diff] [blame] | 1104 | | PSSCAN_VSZ | PSSCAN_RSS |
Denis Vlasenko | 5fee2e1 | 2008-01-05 03:26:41 +0000 | [diff] [blame] | 1105 | | PSSCAN_STIME | PSSCAN_UTIME | PSSCAN_START_TIME |
Denis Vlasenko | 516a0ca | 2007-04-19 14:46:14 +0000 | [diff] [blame] | 1106 | | PSSCAN_TTY, |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 1107 | }; |
| 1108 | procps_status_t* alloc_procps_scan(int flags); |
| 1109 | void free_procps_scan(procps_status_t* sp); |
| 1110 | procps_status_t* procps_scan(procps_status_t* sp, int flags); |
Denis Vlasenko | 98ebab8 | 2007-06-30 14:47:41 +0000 | [diff] [blame] | 1111 | /* Format cmdline (up to col chars) into char buf[col+1] */ |
| 1112 | /* Puts [comm] if cmdline is empty (-> process is a kernel thread) */ |
| 1113 | void read_cmdline(char *buf, int col, unsigned pid, const char *comm); |
Denis Vlasenko | 35fb512 | 2006-11-01 09:16:49 +0000 | [diff] [blame] | 1114 | pid_t *find_pid_by_name(const char* procName); |
| 1115 | pid_t *pidlist_reverse(pid_t *pidList); |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1116 | |
| 1117 | |
| 1118 | extern const char bb_uuenc_tbl_base64[]; |
| 1119 | extern const char bb_uuenc_tbl_std[]; |
Denis Vlasenko | e8240f1 | 2007-06-26 15:59:37 +0000 | [diff] [blame] | 1120 | void bb_uuencode(char *store, const void *s, int length, const char *tbl); |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1121 | |
Denis Vlasenko | dd539f7 | 2006-11-01 20:20:37 +0000 | [diff] [blame] | 1122 | typedef struct sha1_ctx_t { |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1123 | uint32_t count[2]; |
| 1124 | uint32_t hash[5]; |
| 1125 | uint32_t wbuf[16]; |
| 1126 | } sha1_ctx_t; |
| 1127 | void sha1_begin(sha1_ctx_t *ctx); |
| 1128 | void sha1_hash(const void *data, size_t length, sha1_ctx_t *ctx); |
| 1129 | void *sha1_end(void *resbuf, sha1_ctx_t *ctx); |
| 1130 | |
Denis Vlasenko | dd539f7 | 2006-11-01 20:20:37 +0000 | [diff] [blame] | 1131 | typedef struct md5_ctx_t { |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1132 | uint32_t A; |
| 1133 | uint32_t B; |
| 1134 | uint32_t C; |
| 1135 | uint32_t D; |
| 1136 | uint64_t total; |
| 1137 | uint32_t buflen; |
| 1138 | char buffer[128]; |
| 1139 | } md5_ctx_t; |
| 1140 | void md5_begin(md5_ctx_t *ctx); |
| 1141 | void md5_hash(const void *data, size_t length, md5_ctx_t *ctx); |
| 1142 | void *md5_end(void *resbuf, md5_ctx_t *ctx); |
| 1143 | |
Denis Vlasenko | c6758a0 | 2007-04-10 21:40:19 +0000 | [diff] [blame] | 1144 | uint32_t *crc32_filltable(uint32_t *tbl256, int endian); |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1145 | |
| 1146 | |
Denis Vlasenko | 49622d7 | 2007-03-10 16:58:49 +0000 | [diff] [blame] | 1147 | enum { /* DO NOT CHANGE THESE VALUES! cp.c, mv.c, install.c depend on them. */ |
Matt Kraai | 0144103 | 2001-04-24 01:30:02 +0000 | [diff] [blame] | 1148 | FILEUTILS_PRESERVE_STATUS = 1, |
Matt Kraai | 4c557bf | 2001-10-05 01:35:10 +0000 | [diff] [blame] | 1149 | FILEUTILS_DEREFERENCE = 2, |
Matt Kraai | 0144103 | 2001-04-24 01:30:02 +0000 | [diff] [blame] | 1150 | FILEUTILS_RECUR = 4, |
| 1151 | FILEUTILS_FORCE = 8, |
Denis Vlasenko | f24e1f4 | 2006-10-21 23:40:20 +0000 | [diff] [blame] | 1152 | FILEUTILS_INTERACTIVE = 0x10, |
| 1153 | FILEUTILS_MAKE_HARDLINK = 0x20, |
| 1154 | FILEUTILS_MAKE_SOFTLINK = 0x40, |
Denis Vlasenko | 49622d7 | 2007-03-10 16:58:49 +0000 | [diff] [blame] | 1155 | #if ENABLE_SELINUX |
| 1156 | FILEUTILS_PRESERVE_SECURITY_CONTEXT = 0x80, |
| 1157 | FILEUTILS_SET_SECURITY_CONTEXT = 0x100 |
| 1158 | #endif |
Matt Kraai | 91b2855 | 2001-04-23 18:53:07 +0000 | [diff] [blame] | 1159 | }; |
| 1160 | |
Denis Vlasenko | 49622d7 | 2007-03-10 16:58:49 +0000 | [diff] [blame] | 1161 | #define FILEUTILS_CP_OPTSTR "pdRfils" USE_SELINUX("c") |
Denis Vlasenko | 8f8f268 | 2006-10-03 21:00:43 +0000 | [diff] [blame] | 1162 | extern const char *applet_name; |
Bernhard Reutner-Fischer | 78e1d58 | 2008-01-13 17:52:53 +0000 | [diff] [blame] | 1163 | /* "BusyBox vN.N.N (timestamp or extra_version)" */ |
Denis Vlasenko | ca525b4 | 2007-06-13 12:27:17 +0000 | [diff] [blame] | 1164 | extern const char bb_banner[]; |
Denis Vlasenko | 0b5fd45 | 2006-09-19 09:55:09 +0000 | [diff] [blame] | 1165 | extern const char bb_msg_memory_exhausted[]; |
| 1166 | extern const char bb_msg_invalid_date[]; |
Denis Vlasenko | 0b5fd45 | 2006-09-19 09:55:09 +0000 | [diff] [blame] | 1167 | extern const char bb_msg_read_error[]; |
| 1168 | extern const char bb_msg_write_error[]; |
Denis Vlasenko | 0b5fd45 | 2006-09-19 09:55:09 +0000 | [diff] [blame] | 1169 | extern const char bb_msg_unknown[]; |
| 1170 | extern const char bb_msg_can_not_create_raw_socket[]; |
| 1171 | extern const char bb_msg_perm_denied_are_you_root[]; |
| 1172 | extern const char bb_msg_requires_arg[]; |
| 1173 | extern const char bb_msg_invalid_arg[]; |
| 1174 | extern const char bb_msg_standard_input[]; |
| 1175 | extern const char bb_msg_standard_output[]; |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 1176 | |
Denis Vlasenko | 7ca3921 | 2006-11-21 20:34:21 +0000 | [diff] [blame] | 1177 | extern const char bb_str_default[]; |
Denis Vlasenko | 98c0bba | 2007-01-26 23:31:05 +0000 | [diff] [blame] | 1178 | /* NB: (bb_hexdigits_upcase[i] | 0x20) -> lowercase hex digit */ |
Denis Vlasenko | 3a34d0c | 2007-01-12 22:10:34 +0000 | [diff] [blame] | 1179 | extern const char bb_hexdigits_upcase[]; |
Denis Vlasenko | 7ca3921 | 2006-11-21 20:34:21 +0000 | [diff] [blame] | 1180 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1181 | extern const char bb_path_mtab_file[]; |
Denis Vlasenko | 0b5fd45 | 2006-09-19 09:55:09 +0000 | [diff] [blame] | 1182 | extern const char bb_path_passwd_file[]; |
| 1183 | extern const char bb_path_shadow_file[]; |
| 1184 | extern const char bb_path_gshadow_file[]; |
| 1185 | extern const char bb_path_group_file[]; |
Denis Vlasenko | 0b5fd45 | 2006-09-19 09:55:09 +0000 | [diff] [blame] | 1186 | extern const char bb_path_motd_file[]; |
| 1187 | extern const char bb_path_wtmp_file[]; |
| 1188 | extern const char bb_dev_null[]; |
Denis Vlasenko | bdbbb7e | 2007-06-08 15:02:55 +0000 | [diff] [blame] | 1189 | extern const char bb_busybox_exec_path[]; |
Denis Vlasenko | 15611bb | 2007-06-12 08:52:02 +0000 | [diff] [blame] | 1190 | /* util-linux manpage says /sbin:/bin:/usr/sbin:/usr/bin, |
| 1191 | * but I want to save a few bytes here */ |
Denis Vlasenko | f5f75c5 | 2007-06-12 22:35:19 +0000 | [diff] [blame] | 1192 | extern const char bb_PATH_root_path[]; /* "PATH=/sbin:/usr/sbin:/bin:/usr/bin" */ |
| 1193 | #define bb_default_root_path (bb_PATH_root_path + sizeof("PATH")) |
| 1194 | #define bb_default_path (bb_PATH_root_path + sizeof("PATH=/sbin:/usr/sbin")) |
"Vladimir N. Oleynik" | 6f347ef | 2005-10-15 10:23:55 +0000 | [diff] [blame] | 1195 | |
Denis Vlasenko | 703e202 | 2007-01-22 14:12:08 +0000 | [diff] [blame] | 1196 | extern const int const_int_0; |
| 1197 | extern const int const_int_1; |
| 1198 | |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 1199 | |
"Vladimir N. Oleynik" | 6f347ef | 2005-10-15 10:23:55 +0000 | [diff] [blame] | 1200 | #ifndef BUFSIZ |
| 1201 | #define BUFSIZ 4096 |
| 1202 | #endif |
Denis Vlasenko | 8581863 | 2007-04-19 14:47:11 +0000 | [diff] [blame] | 1203 | /* Providing hard guarantee on minimum size (think of BUFSIZ == 128) */ |
Denis Vlasenko | 74324c8 | 2007-06-04 10:16:52 +0000 | [diff] [blame] | 1204 | enum { COMMON_BUFSIZE = (BUFSIZ >= 256*sizeof(void*) ? BUFSIZ+1 : 256*sizeof(void*)) }; |
| 1205 | extern char bb_common_bufsiz1[COMMON_BUFSIZE]; |
Denis Vlasenko | 972288e | 2007-03-15 00:57:01 +0000 | [diff] [blame] | 1206 | /* This struct is deliberately not defined. */ |
| 1207 | /* See docs/keep_data_small.txt */ |
| 1208 | struct globals; |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 1209 | /* '*const' ptr makes gcc optimize code much better. |
Denis Vlasenko | e324184 | 2007-08-13 10:36:25 +0000 | [diff] [blame] | 1210 | * Magic prevents ptr_to_globals from going into rodata. |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 1211 | * If you want to assign a value, use PTR_TO_GLOBALS = xxx */ |
Denis Vlasenko | bff32ce | 2007-03-15 19:48:35 +0000 | [diff] [blame] | 1212 | extern struct globals *const ptr_to_globals; |
| 1213 | #define PTR_TO_GLOBALS (*(struct globals**)&ptr_to_globals) |
"Vladimir N. Oleynik" | 6f347ef | 2005-10-15 10:23:55 +0000 | [diff] [blame] | 1214 | |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 1215 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1216 | /* You can change LIBBB_DEFAULT_LOGIN_SHELL, but don't use it, |
| 1217 | * use bb_default_login_shell and following defines. |
| 1218 | * If you change LIBBB_DEFAULT_LOGIN_SHELL, |
| 1219 | * don't forget to change increment constant. */ |
Glenn L McGrath | dc4e75e | 2003-09-02 02:36:18 +0000 | [diff] [blame] | 1220 | #define LIBBB_DEFAULT_LOGIN_SHELL "-/bin/sh" |
Denis Vlasenko | 0b5fd45 | 2006-09-19 09:55:09 +0000 | [diff] [blame] | 1221 | extern const char bb_default_login_shell[]; |
Glenn L McGrath | dc4e75e | 2003-09-02 02:36:18 +0000 | [diff] [blame] | 1222 | /* "/bin/sh" */ |
| 1223 | #define DEFAULT_SHELL (bb_default_login_shell+1) |
| 1224 | /* "sh" */ |
| 1225 | #define DEFAULT_SHELL_SHORT_NAME (bb_default_login_shell+6) |
| 1226 | |
| 1227 | |
Denis Vlasenko | b5a122b | 2006-12-30 14:46:51 +0000 | [diff] [blame] | 1228 | #if ENABLE_FEATURE_DEVFS |
Matt Kraai | 439e3df | 2001-07-23 14:52:08 +0000 | [diff] [blame] | 1229 | # define CURRENT_VC "/dev/vc/0" |
| 1230 | # define VC_1 "/dev/vc/1" |
| 1231 | # define VC_2 "/dev/vc/2" |
| 1232 | # define VC_3 "/dev/vc/3" |
| 1233 | # define VC_4 "/dev/vc/4" |
| 1234 | # define VC_5 "/dev/vc/5" |
Eric Andersen | 592ebd5 | 2003-07-22 07:33:14 +0000 | [diff] [blame] | 1235 | #if defined(__sh__) || defined(__H8300H__) || defined(__H8300S__) |
| 1236 | /* Yes, this sucks, but both SH (including sh64) and H8 have a SCI(F) for their |
| 1237 | respective serial ports .. as such, we can't use the common device paths for |
| 1238 | these. -- PFM */ |
| 1239 | # define SC_0 "/dev/ttsc/0" |
| 1240 | # define SC_1 "/dev/ttsc/1" |
| 1241 | # define SC_FORMAT "/dev/ttsc/%d" |
| 1242 | #else |
| 1243 | # define SC_0 "/dev/tts/0" |
| 1244 | # define SC_1 "/dev/tts/1" |
| 1245 | # define SC_FORMAT "/dev/tts/%d" |
| 1246 | #endif |
Matt Kraai | 439e3df | 2001-07-23 14:52:08 +0000 | [diff] [blame] | 1247 | # define VC_FORMAT "/dev/vc/%d" |
Eric Andersen | c7a3fb9 | 2002-03-20 15:25:25 +0000 | [diff] [blame] | 1248 | # define LOOP_FORMAT "/dev/loop/%d" |
Denis Vlasenko | 0e2c9fb | 2007-08-03 14:16:24 +0000 | [diff] [blame] | 1249 | # define LOOP_NAMESIZE (sizeof("/dev/loop/") + sizeof(int)*3 + 1) |
Denis Vlasenko | 0b193a7 | 2006-09-29 21:47:11 +0000 | [diff] [blame] | 1250 | # define LOOP_NAME "/dev/loop/" |
Eric Andersen | 5f28455 | 2003-11-14 03:11:29 +0000 | [diff] [blame] | 1251 | # define FB_0 "/dev/fb/0" |
Matt Kraai | 439e3df | 2001-07-23 14:52:08 +0000 | [diff] [blame] | 1252 | #else |
| 1253 | # define CURRENT_VC "/dev/tty0" |
| 1254 | # define VC_1 "/dev/tty1" |
| 1255 | # define VC_2 "/dev/tty2" |
| 1256 | # define VC_3 "/dev/tty3" |
| 1257 | # define VC_4 "/dev/tty4" |
| 1258 | # define VC_5 "/dev/tty5" |
Eric Andersen | 592ebd5 | 2003-07-22 07:33:14 +0000 | [diff] [blame] | 1259 | #if defined(__sh__) || defined(__H8300H__) || defined(__H8300S__) |
| 1260 | # define SC_0 "/dev/ttySC0" |
| 1261 | # define SC_1 "/dev/ttySC1" |
| 1262 | # define SC_FORMAT "/dev/ttySC%d" |
| 1263 | #else |
| 1264 | # define SC_0 "/dev/ttyS0" |
| 1265 | # define SC_1 "/dev/ttyS1" |
| 1266 | # define SC_FORMAT "/dev/ttyS%d" |
| 1267 | #endif |
Matt Kraai | 439e3df | 2001-07-23 14:52:08 +0000 | [diff] [blame] | 1268 | # define VC_FORMAT "/dev/tty%d" |
Eric Andersen | c7a3fb9 | 2002-03-20 15:25:25 +0000 | [diff] [blame] | 1269 | # define LOOP_FORMAT "/dev/loop%d" |
Denis Vlasenko | 0e2c9fb | 2007-08-03 14:16:24 +0000 | [diff] [blame] | 1270 | # define LOOP_NAMESIZE (sizeof("/dev/loop") + sizeof(int)*3 + 1) |
Denis Vlasenko | 0b193a7 | 2006-09-29 21:47:11 +0000 | [diff] [blame] | 1271 | # define LOOP_NAME "/dev/loop" |
Eric Andersen | 5f28455 | 2003-11-14 03:11:29 +0000 | [diff] [blame] | 1272 | # define FB_0 "/dev/fb0" |
Matt Kraai | 439e3df | 2001-07-23 14:52:08 +0000 | [diff] [blame] | 1273 | #endif |
| 1274 | |
| 1275 | /* The following devices are the same on devfs and non-devfs systems. */ |
| 1276 | #define CURRENT_TTY "/dev/tty" |
Denis Vlasenko | ec27feb | 2007-02-17 15:52:02 +0000 | [diff] [blame] | 1277 | #define DEV_CONSOLE "/dev/console" |
Matt Kraai | 439e3df | 2001-07-23 14:52:08 +0000 | [diff] [blame] | 1278 | |
Rob Landley | c57ec37 | 2006-04-10 17:07:15 +0000 | [diff] [blame] | 1279 | |
Rob Landley | b623a54 | 2006-05-31 22:09:03 +0000 | [diff] [blame] | 1280 | #ifndef RB_POWER_OFF |
| 1281 | /* Stop system and switch power off if possible. */ |
| 1282 | #define RB_POWER_OFF 0x4321fedc |
| 1283 | #endif |
| 1284 | |
Denis Vlasenko | cf30cc8 | 2006-11-24 14:53:18 +0000 | [diff] [blame] | 1285 | /* Make sure we call functions instead of macros. */ |
Rob Landley | 4ae905a | 2006-07-06 17:22:54 +0000 | [diff] [blame] | 1286 | #undef isalnum |
| 1287 | #undef isalpha |
| 1288 | #undef isascii |
| 1289 | #undef isblank |
| 1290 | #undef iscntrl |
Rob Landley | 4ae905a | 2006-07-06 17:22:54 +0000 | [diff] [blame] | 1291 | #undef isgraph |
| 1292 | #undef islower |
| 1293 | #undef isprint |
| 1294 | #undef ispunct |
| 1295 | #undef isspace |
| 1296 | #undef isupper |
| 1297 | #undef isxdigit |
| 1298 | |
Denis Vlasenko | 459903b | 2006-11-27 14:44:18 +0000 | [diff] [blame] | 1299 | /* This one is more efficient - we save ~400 bytes */ |
| 1300 | #undef isdigit |
| 1301 | #define isdigit(a) ((unsigned)((a) - '0') <= 9) |
| 1302 | |
| 1303 | |
Bernhard Reutner-Fischer | 73561cc | 2006-08-28 23:31:54 +0000 | [diff] [blame] | 1304 | #ifdef DMALLOC |
| 1305 | #include <dmalloc.h> |
| 1306 | #endif |
| 1307 | |
Denis Vlasenko | 80b8b39 | 2007-06-25 10:55:35 +0000 | [diff] [blame] | 1308 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) |
| 1309 | |
Bernhard Reutner-Fischer | 86f5c99 | 2006-01-22 22:55:11 +0000 | [diff] [blame] | 1310 | #endif /* __LIBBUSYBOX_H__ */ |