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 |
Denys Vlasenko | 0ef64bd | 2010-08-16 20:14:46 +0200 | [diff] [blame] | 6 | * Permission has been granted to redistribute this code under GPL. |
Denis Vlasenko | f7996f3 | 2007-01-11 17:20:00 +0000 | [diff] [blame] | 7 | * |
Denys Vlasenko | 0ef64bd | 2010-08-16 20:14:46 +0200 | [diff] [blame] | 8 | * Licensed under GPLv2, see file LICENSE in this source tree. |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 9 | */ |
Denis Vlasenko | f81e8db | 2009-04-09 12:35:13 +0000 | [diff] [blame] | 10 | #ifndef LIBBB_H |
| 11 | #define LIBBB_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> |
Denys Vlasenko | 89f5bfd | 2011-05-12 23:03:18 +0200 | [diff] [blame] | 23 | #if defined __UCLIBC__ /* TODO: and glibc? */ |
| 24 | /* use inlined versions of these: */ |
| 25 | # define sigfillset(s) __sigfillset(s) |
| 26 | # define sigemptyset(s) __sigemptyset(s) |
| 27 | # define sigisemptyset(s) __sigisemptyset(s) |
| 28 | #endif |
Denys Vlasenko | 5b9b136 | 2010-02-02 03:08:57 +0100 | [diff] [blame] | 29 | #include <stdint.h> |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 30 | #include <stdio.h> |
Manuel Novoa III | 68474f3 | 2004-02-05 14:45:58 +0000 | [diff] [blame] | 31 | #include <stdlib.h> |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 32 | #include <stdarg.h> |
Denis Vlasenko | 4b4b619 | 2007-03-18 20:33:26 +0000 | [diff] [blame] | 33 | #include <stddef.h> |
Rob Landley | 5d9c42a | 2006-06-24 17:55:02 +0000 | [diff] [blame] | 34 | #include <string.h> |
Denys Vlasenko | d48fdde | 2011-09-10 13:48:34 +0200 | [diff] [blame] | 35 | /* There are two incompatible basename's, let not use them! */ |
| 36 | /* See the dirname/basename man page for details */ |
| 37 | #include <libgen.h> /* dirname,basename */ |
| 38 | #undef basename |
| 39 | #define basename dont_use_basename |
Denis Vlasenko | b308d81 | 2007-08-28 19:35:34 +0000 | [diff] [blame] | 40 | #include <sys/poll.h> |
Rob Landley | c9c1a41 | 2006-07-12 19:17:55 +0000 | [diff] [blame] | 41 | #include <sys/ioctl.h> |
Rob Landley | d921b2e | 2006-08-03 15:41:12 +0000 | [diff] [blame] | 42 | #include <sys/mman.h> |
Rob Landley | 5d9c42a | 2006-06-24 17:55:02 +0000 | [diff] [blame] | 43 | #include <sys/socket.h> |
"Vladimir N. Oleynik" | 7fe6520 | 2005-09-20 10:02:36 +0000 | [diff] [blame] | 44 | #include <sys/stat.h> |
Rob Landley | 299a6b4 | 2006-05-27 21:42:58 +0000 | [diff] [blame] | 45 | #include <sys/time.h> |
Rob Landley | b623a54 | 2006-05-31 22:09:03 +0000 | [diff] [blame] | 46 | #include <sys/types.h> |
Denys Vlasenko | dd807c1 | 2011-02-07 14:58:57 +0100 | [diff] [blame] | 47 | #ifndef major |
| 48 | # include <sys/sysmacros.h> |
| 49 | #endif |
Rob Landley | c9c1a41 | 2006-07-12 19:17:55 +0000 | [diff] [blame] | 50 | #include <sys/wait.h> |
Rob Landley | b623a54 | 2006-05-31 22:09:03 +0000 | [diff] [blame] | 51 | #include <termios.h> |
Rob Landley | d921b2e | 2006-08-03 15:41:12 +0000 | [diff] [blame] | 52 | #include <time.h> |
Denis Vlasenko | 7e3a5f5 | 2007-11-16 20:18:54 +0000 | [diff] [blame] | 53 | #include <sys/param.h> |
Mike Frysinger | 22876c7 | 2008-02-07 22:10:07 +0000 | [diff] [blame] | 54 | #ifdef HAVE_MNTENT_H |
Waldemar Brodkorb | 95b83ba | 2010-08-06 09:17:26 +0200 | [diff] [blame] | 55 | # include <mntent.h> |
Mike Frysinger | 22876c7 | 2008-02-07 22:10:07 +0000 | [diff] [blame] | 56 | #endif |
Mike Frysinger | 9412ec7 | 2008-02-07 22:41:33 +0000 | [diff] [blame] | 57 | #ifdef HAVE_SYS_STATFS_H |
Waldemar Brodkorb | 95b83ba | 2010-08-06 09:17:26 +0200 | [diff] [blame] | 58 | # include <sys/statfs.h> |
Mike Frysinger | 9412ec7 | 2008-02-07 22:41:33 +0000 | [diff] [blame] | 59 | #endif |
Denys Vlasenko | 67905e2 | 2011-07-26 13:42:12 +0200 | [diff] [blame] | 60 | /* Don't do this here: |
| 61 | * #include <sys/sysinfo.h> |
| 62 | * Some linux/ includes pull in conflicting definition |
| 63 | * of struct sysinfo (only in some toolchanins), which breaks build. |
| 64 | * Include sys/sysinfo.h only in those files which need it. |
| 65 | */ |
Denis Vlasenko | b5a122b | 2006-12-30 14:46:51 +0000 | [diff] [blame] | 66 | #if ENABLE_SELINUX |
Waldemar Brodkorb | 95b83ba | 2010-08-06 09:17:26 +0200 | [diff] [blame] | 67 | # include <selinux/selinux.h> |
| 68 | # include <selinux/context.h> |
| 69 | # include <selinux/flask.h> |
| 70 | # include <selinux/av_permissions.h> |
Eric Andersen | 9e48045 | 2003-07-03 10:07:04 +0000 | [diff] [blame] | 71 | #endif |
Denys Vlasenko | 8d0e0cd | 2011-01-25 23:21:46 +0100 | [diff] [blame] | 72 | #if ENABLE_FEATURE_UTMP |
| 73 | # include <utmp.h> |
| 74 | #endif |
Denis Vlasenko | b5a122b | 2006-12-30 14:46:51 +0000 | [diff] [blame] | 75 | #if ENABLE_LOCALE_SUPPORT |
Denys Vlasenko | 9d57a80 | 2009-10-23 14:24:44 +0200 | [diff] [blame] | 76 | # include <locale.h> |
Rob Landley | eb84a42 | 2006-09-20 21:41:13 +0000 | [diff] [blame] | 77 | #else |
Denys Vlasenko | 9d57a80 | 2009-10-23 14:24:44 +0200 | [diff] [blame] | 78 | # define setlocale(x,y) ((void)0) |
Rob Landley | d921b2e | 2006-08-03 15:41:12 +0000 | [diff] [blame] | 79 | #endif |
Denis Vlasenko | 98636eb | 2008-05-09 17:59:34 +0000 | [diff] [blame] | 80 | #ifdef DMALLOC |
Denys Vlasenko | 9d57a80 | 2009-10-23 14:24:44 +0200 | [diff] [blame] | 81 | # include <dmalloc.h> |
Denis Vlasenko | b5a122b | 2006-12-30 14:46:51 +0000 | [diff] [blame] | 82 | #endif |
Denis Vlasenko | ee5dce3 | 2008-09-26 10:35:55 +0000 | [diff] [blame] | 83 | #include <pwd.h> |
| 84 | #include <grp.h> |
Denis Vlasenko | 98636eb | 2008-05-09 17:59:34 +0000 | [diff] [blame] | 85 | #if ENABLE_FEATURE_SHADOWPASSWDS |
Mike Frysinger | 52a4267 | 2009-07-09 01:33:20 -0400 | [diff] [blame] | 86 | # if !ENABLE_USE_BB_SHADOW |
| 87 | /* If using busybox's shadow implementation, do not include the shadow.h |
| 88 | * header as the toolchain may not provide it at all. |
| 89 | */ |
| 90 | # include <shadow.h> |
| 91 | # endif |
Denis Vlasenko | 98636eb | 2008-05-09 17:59:34 +0000 | [diff] [blame] | 92 | #endif |
Tito Ragusa | ad3d72f | 2011-01-16 23:39:45 +0100 | [diff] [blame] | 93 | /* Just in case libc doesn't define some of these... */ |
| 94 | #ifndef _PATH_PASSWD |
| 95 | #define _PATH_PASSWD "/etc/passwd" |
| 96 | #endif |
| 97 | #ifndef _PATH_GROUP |
| 98 | #define _PATH_GROUP "/etc/group" |
| 99 | #endif |
| 100 | #ifndef _PATH_SHADOW |
| 101 | #define _PATH_SHADOW "/etc/shadow" |
| 102 | #endif |
| 103 | #ifndef _PATH_GSHADOW |
| 104 | #define _PATH_GSHADOW "/etc/gshadow" |
| 105 | #endif |
Waldemar Brodkorb | 95b83ba | 2010-08-06 09:17:26 +0200 | [diff] [blame] | 106 | #if defined __FreeBSD__ || defined __OpenBSD__ |
Denys Vlasenko | bb1dcc9 | 2010-02-02 12:45:38 +0100 | [diff] [blame] | 107 | # include <netinet/in.h> |
| 108 | # include <arpa/inet.h> |
| 109 | #elif defined __APPLE__ |
| 110 | # include <netinet/in.h> |
| 111 | #else |
| 112 | # include <arpa/inet.h> |
| 113 | # if !defined(__socklen_t_defined) && !defined(_SOCKLEN_T_DECLARED) |
| 114 | /* We #define socklen_t *after* includes, otherwise we get |
| 115 | * typedef redefinition errors from system headers |
| 116 | * (in case "is it defined already" detection above failed) |
| 117 | */ |
| 118 | # define socklen_t bb_socklen_t |
| 119 | typedef unsigned socklen_t; |
| 120 | # endif |
| 121 | #endif |
Chris Rees | 330718e | 2011-01-24 17:07:06 +0100 | [diff] [blame] | 122 | #ifndef HAVE_CLEARENV |
| 123 | # define clearenv() do { if (environ) environ[0] = NULL; } while (0) |
| 124 | #endif |
| 125 | #ifndef HAVE_FDATASYNC |
| 126 | # define fdatasync fsync |
| 127 | #endif |
| 128 | #ifndef HAVE_XTABS |
| 129 | # define XTABS TAB3 |
| 130 | #endif |
Denys Vlasenko | bb1dcc9 | 2010-02-02 12:45:38 +0100 | [diff] [blame] | 131 | |
Denis Vlasenko | 98636eb | 2008-05-09 17:59:34 +0000 | [diff] [blame] | 132 | |
Denis Vlasenko | af6cca5 | 2008-05-25 04:31:54 +0000 | [diff] [blame] | 133 | /* Some libc's forget to declare these, do it ourself */ |
Denis Vlasenko | 847fa77 | 2008-01-28 22:45:43 +0000 | [diff] [blame] | 134 | |
Denis Vlasenko | cac0f5b | 2008-09-25 10:20:46 +0000 | [diff] [blame] | 135 | extern char **environ; |
Denis Vlasenko | 7e3a5f5 | 2007-11-16 20:18:54 +0000 | [diff] [blame] | 136 | #if defined(__GLIBC__) && __GLIBC__ < 2 |
| 137 | int vdprintf(int d, const char *format, va_list ap); |
Rob Landley | 362dc2b | 2006-06-05 17:35:24 +0000 | [diff] [blame] | 138 | #endif |
Denis Vlasenko | 7e3a5f5 | 2007-11-16 20:18:54 +0000 | [diff] [blame] | 139 | /* klogctl is in libc's klog.h, but we cheat and not #include that */ |
| 140 | int klogctl(int type, char *b, int len); |
Denys Vlasenko | bb1dcc9 | 2010-02-02 12:45:38 +0100 | [diff] [blame] | 141 | #ifndef PATH_MAX |
| 142 | # define PATH_MAX 256 |
| 143 | #endif |
| 144 | #ifndef BUFSIZ |
| 145 | # define BUFSIZ 4096 |
| 146 | #endif |
Rob Landley | 362dc2b | 2006-06-05 17:35:24 +0000 | [diff] [blame] | 147 | |
Denis Vlasenko | 7e3a5f5 | 2007-11-16 20:18:54 +0000 | [diff] [blame] | 148 | |
Denys Vlasenko | 0c4cf42 | 2011-06-30 02:44:27 +0200 | [diff] [blame] | 149 | /* Busybox does not use threads, we can speed up stdio. */ |
Dan Fandrich | 75214cf | 2011-06-30 02:59:17 +0200 | [diff] [blame] | 150 | #ifdef HAVE_UNLOCKED_STDIO |
| 151 | # undef getc |
| 152 | # define getc(stream) getc_unlocked(stream) |
| 153 | # undef getchar |
| 154 | # define getchar() getchar_unlocked() |
| 155 | # undef putc |
| 156 | # define putc(c, stream) putc_unlocked(c, stream) |
| 157 | # undef putchar |
| 158 | # define putchar(c) putchar_unlocked(c) |
| 159 | # undef fgetc |
| 160 | # define fgetc(stream) getc_unlocked(stream) |
| 161 | # undef fputc |
| 162 | # define fputc(c, stream) putc_unlocked(c, stream) |
| 163 | #endif |
Denys Vlasenko | 0c4cf42 | 2011-06-30 02:44:27 +0200 | [diff] [blame] | 164 | /* Above functions are required by POSIX.1-2008, below ones are extensions */ |
Dan Fandrich | 75214cf | 2011-06-30 02:59:17 +0200 | [diff] [blame] | 165 | #ifdef HAVE_UNLOCKED_LINE_OPS |
| 166 | # undef fgets |
| 167 | # define fgets(s, n, stream) fgets_unlocked(s, n, stream) |
| 168 | # undef fputs |
| 169 | # define fputs(s, stream) fputs_unlocked(s, stream) |
| 170 | #endif |
Denys Vlasenko | 0644891 | 2011-06-20 10:06:28 +0200 | [diff] [blame] | 171 | |
| 172 | |
Denis Vlasenko | 98636eb | 2008-05-09 17:59:34 +0000 | [diff] [blame] | 173 | /* Make all declarations hidden (-fvisibility flag only affects definitions) */ |
| 174 | /* (don't include system headers after this until corresponding pop!) */ |
Denis Vlasenko | f81e8db | 2009-04-09 12:35:13 +0000 | [diff] [blame] | 175 | PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN |
Denis Vlasenko | 98636eb | 2008-05-09 17:59:34 +0000 | [diff] [blame] | 176 | |
| 177 | |
| 178 | #if ENABLE_USE_BB_PWD_GRP |
| 179 | # include "pwd_.h" |
| 180 | # include "grp_.h" |
| 181 | #endif |
| 182 | #if ENABLE_FEATURE_SHADOWPASSWDS |
| 183 | # if ENABLE_USE_BB_SHADOW |
| 184 | # include "shadow_.h" |
| 185 | # endif |
| 186 | #endif |
| 187 | |
Denis Vlasenko | 7e3a5f5 | 2007-11-16 20:18:54 +0000 | [diff] [blame] | 188 | /* Tested to work correctly with all int types (IIRC :]) */ |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 189 | #define MAXINT(T) (T)( \ |
| 190 | ((T)-1) > 0 \ |
| 191 | ? (T)-1 \ |
| 192 | : (T)~((T)1 << (sizeof(T)*8-1)) \ |
| 193 | ) |
| 194 | |
| 195 | #define MININT(T) (T)( \ |
| 196 | ((T)-1) > 0 \ |
| 197 | ? (T)0 \ |
| 198 | : ((T)1 << (sizeof(T)*8-1)) \ |
| 199 | ) |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 200 | |
Denis Vlasenko | 5625415 | 2006-10-07 16:24:46 +0000 | [diff] [blame] | 201 | /* Large file support */ |
Denis Vlasenko | 7e3a5f5 | 2007-11-16 20:18:54 +0000 | [diff] [blame] | 202 | /* 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] | 203 | * (stat, lseek etc) mapped to "largefile" variants by libc. |
| 204 | * Practically it means that open() automatically has O_LARGEFILE added |
| 205 | * and all filesize/file_offset parameters and struct members are "large" |
| 206 | * (in today's world - signed 64bit). For full support of large files, |
| 207 | * we need a few helper #defines (below) and careful use of off_t |
| 208 | * instead of int/ssize_t. No lseek64(), O_LARGEFILE etc necessary */ |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 209 | #if ENABLE_LFS |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 210 | /* CONFIG_LFS is on */ |
| 211 | # if ULONG_MAX > 0xffffffff |
| 212 | /* "long" is long enough on this system */ |
Denis Vlasenko | 9d04b6b | 2009-03-28 02:13:01 +0000 | [diff] [blame] | 213 | typedef unsigned long uoff_t; |
Denis Vlasenko | 5fa7148 | 2006-12-12 22:31:15 +0000 | [diff] [blame] | 214 | # define XATOOFF(a) xatoul_range(a, 0, LONG_MAX) |
Denis Vlasenko | d686a04 | 2006-11-27 14:43:21 +0000 | [diff] [blame] | 215 | /* usage: sz = BB_STRTOOFF(s, NULL, 10); if (errno || sz < 0) die(); */ |
| 216 | # define BB_STRTOOFF bb_strtoul |
| 217 | # define STRTOOFF strtoul |
Denis Vlasenko | cf30cc8 | 2006-11-24 14:53:18 +0000 | [diff] [blame] | 218 | /* usage: printf("size: %"OFF_FMT"d (%"OFF_FMT"x)\n", sz, sz); */ |
| 219 | # define OFF_FMT "l" |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 220 | # else |
Denis Vlasenko | cba9ef5 | 2006-10-10 21:00:47 +0000 | [diff] [blame] | 221 | /* "long" is too short, need "long long" */ |
Denis Vlasenko | 9d04b6b | 2009-03-28 02:13:01 +0000 | [diff] [blame] | 222 | typedef unsigned long long uoff_t; |
Denis Vlasenko | 5fa7148 | 2006-12-12 22:31:15 +0000 | [diff] [blame] | 223 | # define XATOOFF(a) xatoull_range(a, 0, LLONG_MAX) |
Denis Vlasenko | d686a04 | 2006-11-27 14:43:21 +0000 | [diff] [blame] | 224 | # define BB_STRTOOFF bb_strtoull |
| 225 | # define STRTOOFF strtoull |
Denis Vlasenko | cf30cc8 | 2006-11-24 14:53:18 +0000 | [diff] [blame] | 226 | # define OFF_FMT "ll" |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 227 | # endif |
Denis Vlasenko | 5625415 | 2006-10-07 16:24:46 +0000 | [diff] [blame] | 228 | #else |
Denis Vlasenko | 5fa7148 | 2006-12-12 22:31:15 +0000 | [diff] [blame] | 229 | /* CONFIG_LFS is off */ |
| 230 | # if UINT_MAX == 0xffffffff |
| 231 | /* While sizeof(off_t) == sizeof(int), off_t is typedef'ed to long anyway. |
| 232 | * gcc will throw warnings on printf("%d", off_t). Crap... */ |
Denis Vlasenko | 9d04b6b | 2009-03-28 02:13:01 +0000 | [diff] [blame] | 233 | typedef unsigned long uoff_t; |
Denys Vlasenko | 7783248 | 2010-08-12 14:14:45 +0200 | [diff] [blame] | 234 | # define XATOOFF(a) xatoi_positive(a) |
Denis Vlasenko | 5fa7148 | 2006-12-12 22:31:15 +0000 | [diff] [blame] | 235 | # define BB_STRTOOFF bb_strtou |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 236 | # define STRTOOFF strtol |
Denis Vlasenko | 5fa7148 | 2006-12-12 22:31:15 +0000 | [diff] [blame] | 237 | # define OFF_FMT "l" |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 238 | # else |
Denis Vlasenko | 9d04b6b | 2009-03-28 02:13:01 +0000 | [diff] [blame] | 239 | typedef unsigned long uoff_t; |
Denis Vlasenko | 5fa7148 | 2006-12-12 22:31:15 +0000 | [diff] [blame] | 240 | # define XATOOFF(a) xatoul_range(a, 0, LONG_MAX) |
| 241 | # define BB_STRTOOFF bb_strtoul |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 242 | # define STRTOOFF strtol |
Denis Vlasenko | cf30cc8 | 2006-11-24 14:53:18 +0000 | [diff] [blame] | 243 | # define OFF_FMT "l" |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 244 | # endif |
Denis Vlasenko | 5625415 | 2006-10-07 16:24:46 +0000 | [diff] [blame] | 245 | #endif |
| 246 | /* scary. better ideas? (but do *test* them first!) */ |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 247 | #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] | 248 | |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 249 | /* Some useful definitions */ |
Bernhard Reutner-Fischer | 781e42d | 2006-05-26 14:41:40 +0000 | [diff] [blame] | 250 | #undef FALSE |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 251 | #define FALSE ((int) 0) |
Bernhard Reutner-Fischer | 781e42d | 2006-05-26 14:41:40 +0000 | [diff] [blame] | 252 | #undef TRUE |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 253 | #define TRUE ((int) 1) |
Bernhard Reutner-Fischer | 781e42d | 2006-05-26 14:41:40 +0000 | [diff] [blame] | 254 | #undef SKIP |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 255 | #define SKIP ((int) 2) |
| 256 | |
| 257 | /* for mtab.c */ |
| 258 | #define MTAB_GETMOUNTPT '1' |
| 259 | #define MTAB_GETDEVICE '2' |
| 260 | |
| 261 | #define BUF_SIZE 8192 |
| 262 | #define EXPAND_ALLOC 1024 |
| 263 | |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 264 | /* Macros for min/max. */ |
| 265 | #ifndef MIN |
Denys Vlasenko | e4dcba1 | 2010-10-28 18:57:19 +0200 | [diff] [blame] | 266 | #define MIN(a,b) (((a)<(b))?(a):(b)) |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 267 | #endif |
| 268 | |
| 269 | #ifndef MAX |
Denys Vlasenko | e4dcba1 | 2010-10-28 18:57:19 +0200 | [diff] [blame] | 270 | #define MAX(a,b) (((a)>(b))?(a):(b)) |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 271 | #endif |
| 272 | |
Bernhard Reutner-Fischer | 421d9e5 | 2006-04-03 16:39:31 +0000 | [diff] [blame] | 273 | /* buffer allocation schemes */ |
Denis Vlasenko | b5a122b | 2006-12-30 14:46:51 +0000 | [diff] [blame] | 274 | #if ENABLE_FEATURE_BUFFERS_GO_ON_STACK |
Denis Vlasenko | bbd695d | 2007-04-08 10:52:28 +0000 | [diff] [blame] | 275 | #define RESERVE_CONFIG_BUFFER(buffer,len) char buffer[len] |
Bernhard Reutner-Fischer | 421d9e5 | 2006-04-03 16:39:31 +0000 | [diff] [blame] | 276 | #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char buffer[len] |
| 277 | #define RELEASE_CONFIG_BUFFER(buffer) ((void)0) |
| 278 | #else |
Denis Vlasenko | b5a122b | 2006-12-30 14:46:51 +0000 | [diff] [blame] | 279 | #if ENABLE_FEATURE_BUFFERS_GO_IN_BSS |
Bernhard Reutner-Fischer | 421d9e5 | 2006-04-03 16:39:31 +0000 | [diff] [blame] | 280 | #define RESERVE_CONFIG_BUFFER(buffer,len) static char buffer[len] |
| 281 | #define RESERVE_CONFIG_UBUFFER(buffer,len) static unsigned char buffer[len] |
| 282 | #define RELEASE_CONFIG_BUFFER(buffer) ((void)0) |
| 283 | #else |
Denis Vlasenko | bbd695d | 2007-04-08 10:52:28 +0000 | [diff] [blame] | 284 | #define RESERVE_CONFIG_BUFFER(buffer,len) char *buffer = xmalloc(len) |
| 285 | #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char *buffer = xmalloc(len) |
| 286 | #define RELEASE_CONFIG_BUFFER(buffer) free(buffer) |
Bernhard Reutner-Fischer | 421d9e5 | 2006-04-03 16:39:31 +0000 | [diff] [blame] | 287 | #endif |
| 288 | #endif |
| 289 | |
Denis Vlasenko | fad2b86 | 2007-05-31 22:16:38 +0000 | [diff] [blame] | 290 | #if defined(__GLIBC__) |
| 291 | /* glibc uses __errno_location() to get a ptr to errno */ |
| 292 | /* We can just memorize it once - no multithreading in busybox :) */ |
| 293 | extern int *const bb_errno; |
| 294 | #undef errno |
| 295 | #define errno (*bb_errno) |
| 296 | #endif |
| 297 | |
Denys Vlasenko | 9ff50b8 | 2010-10-18 11:40:26 +0200 | [diff] [blame] | 298 | #if !(ULONG_MAX > 0xffffffff) |
| 299 | /* Only 32-bit CPUs need this, 64-bit ones use inlined version */ |
| 300 | uint64_t bb_bswap_64(uint64_t x) FAST_FUNC; |
| 301 | #endif |
| 302 | |
Denis Vlasenko | ce13b76 | 2008-06-29 02:25:53 +0000 | [diff] [blame] | 303 | unsigned long long monotonic_ns(void) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 304 | unsigned long long monotonic_us(void) FAST_FUNC; |
Denys Vlasenko | f2c8aa6 | 2010-01-12 12:52:30 +0100 | [diff] [blame] | 305 | unsigned long long monotonic_ms(void) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 306 | unsigned monotonic_sec(void) FAST_FUNC; |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 307 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 308 | extern void chomp(char *s) FAST_FUNC; |
| 309 | extern void trim(char *s) FAST_FUNC; |
| 310 | extern char *skip_whitespace(const char *) FAST_FUNC; |
| 311 | extern char *skip_non_whitespace(const char *) FAST_FUNC; |
Denys Vlasenko | f8d8aa1 | 2010-04-06 18:50:05 +0200 | [diff] [blame] | 312 | extern char *skip_dev_pfx(const char *tty_name) FAST_FUNC; |
| 313 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 314 | extern char *strrstr(const char *haystack, const char *needle) FAST_FUNC; |
Paul Fox | 0b62158 | 2005-08-09 19:38:05 +0000 | [diff] [blame] | 315 | |
Denis Vlasenko | 6ef06ee | 2007-03-14 22:06:01 +0000 | [diff] [blame] | 316 | //TODO: supply a pointer to char[11] buffer (avoid statics)? |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 317 | extern const char *bb_mode_string(mode_t mode) FAST_FUNC; |
| 318 | extern int is_directory(const char *name, int followLinks, struct stat *statBuf) FAST_FUNC; |
Denis Vlasenko | b9ad75f | 2008-03-28 17:49:31 +0000 | [diff] [blame] | 319 | enum { /* DO NOT CHANGE THESE VALUES! cp.c, mv.c, install.c depend on them. */ |
Denys Vlasenko | a40f062 | 2010-01-15 22:05:07 +0100 | [diff] [blame] | 320 | FILEUTILS_PRESERVE_STATUS = 1 << 0, /* -p */ |
| 321 | FILEUTILS_DEREFERENCE = 1 << 1, /* !-d */ |
| 322 | FILEUTILS_RECUR = 1 << 2, /* -R */ |
| 323 | FILEUTILS_FORCE = 1 << 3, /* -f */ |
| 324 | FILEUTILS_INTERACTIVE = 1 << 4, /* -i */ |
| 325 | FILEUTILS_MAKE_HARDLINK = 1 << 5, /* -l */ |
| 326 | FILEUTILS_MAKE_SOFTLINK = 1 << 6, /* -s */ |
| 327 | FILEUTILS_DEREF_SOFTLINK = 1 << 7, /* -L */ |
| 328 | FILEUTILS_DEREFERENCE_L0 = 1 << 8, /* -H */ |
Denis Vlasenko | b9ad75f | 2008-03-28 17:49:31 +0000 | [diff] [blame] | 329 | #if ENABLE_SELINUX |
Denys Vlasenko | a40f062 | 2010-01-15 22:05:07 +0100 | [diff] [blame] | 330 | FILEUTILS_PRESERVE_SECURITY_CONTEXT = 1 << 9, /* -c */ |
| 331 | FILEUTILS_SET_SECURITY_CONTEXT = 1 << 10, |
Denis Vlasenko | b9ad75f | 2008-03-28 17:49:31 +0000 | [diff] [blame] | 332 | #endif |
| 333 | }; |
Denys Vlasenko | a40f062 | 2010-01-15 22:05:07 +0100 | [diff] [blame] | 334 | #define FILEUTILS_CP_OPTSTR "pdRfilsLH" IF_SELINUX("c") |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 335 | extern int remove_file(const char *path, int flags) FAST_FUNC; |
Denis Vlasenko | b9ad75f | 2008-03-28 17:49:31 +0000 | [diff] [blame] | 336 | /* NB: without FILEUTILS_RECUR in flags, it will basically "cat" |
| 337 | * the source, not copy (unless "source" is a directory). |
| 338 | * This makes "cp /dev/null file" and "install /dev/null file" (!!!) |
| 339 | * work coreutils-compatibly. */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 340 | extern int copy_file(const char *source, const char *dest, int flags) FAST_FUNC; |
Denis Vlasenko | b9ad75f | 2008-03-28 17:49:31 +0000 | [diff] [blame] | 341 | |
Denis Vlasenko | bbd695d | 2007-04-08 10:52:28 +0000 | [diff] [blame] | 342 | enum { |
Denis Vlasenko | d166f83 | 2007-07-05 00:12:55 +0000 | [diff] [blame] | 343 | ACTION_RECURSE = (1 << 0), |
| 344 | ACTION_FOLLOWLINKS = (1 << 1), |
| 345 | ACTION_FOLLOWLINKS_L0 = (1 << 2), |
| 346 | ACTION_DEPTHFIRST = (1 << 3), |
| 347 | /*ACTION_REVERSE = (1 << 4), - unused */ |
Denis Vlasenko | 6e69e42 | 2008-07-27 12:10:07 +0000 | [diff] [blame] | 348 | ACTION_QUIET = (1 << 5), |
Denys Vlasenko | 8f7a6d2 | 2009-09-29 11:07:04 +0200 | [diff] [blame] | 349 | ACTION_DANGLING_OK = (1 << 6), |
Denis Vlasenko | bbd695d | 2007-04-08 10:52:28 +0000 | [diff] [blame] | 350 | }; |
Denys Vlasenko | 8f7a6d2 | 2009-09-29 11:07:04 +0200 | [diff] [blame] | 351 | typedef uint8_t recurse_flags_t; |
Bernhard Reutner-Fischer | 3e816c1 | 2007-03-29 10:30:50 +0000 | [diff] [blame] | 352 | extern int recursive_action(const char *fileName, unsigned flags, |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 353 | int FAST_FUNC (*fileAction)(const char *fileName, struct stat* statbuf, void* userData, int depth), |
| 354 | int FAST_FUNC (*dirAction)(const char *fileName, struct stat* statbuf, void* userData, int depth), |
| 355 | void* userData, unsigned depth) FAST_FUNC; |
| 356 | extern int device_open(const char *device, int mode) FAST_FUNC; |
Denis Vlasenko | 85c2471 | 2008-03-17 09:04:04 +0000 | [diff] [blame] | 357 | enum { GETPTY_BUFSIZE = 16 }; /* more than enough for "/dev/ttyXXX" */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 358 | extern int xgetpty(char *line) FAST_FUNC; |
Denis Vlasenko | 2afd5ab | 2008-08-05 23:32:27 +0000 | [diff] [blame] | 359 | extern int get_console_fd_or_die(void) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 360 | extern void console_make_active(int fd, const int vt_num) FAST_FUNC; |
| 361 | extern char *find_block_device(const char *path) FAST_FUNC; |
Denis Vlasenko | 714701c | 2006-12-22 00:21:07 +0000 | [diff] [blame] | 362 | /* bb_copyfd_XX print read/write errors and return -1 if they occur */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 363 | extern off_t bb_copyfd_eof(int fd1, int fd2) FAST_FUNC; |
| 364 | extern off_t bb_copyfd_size(int fd1, int fd2, off_t size) FAST_FUNC; |
| 365 | extern void bb_copyfd_exact_size(int fd1, int fd2, off_t size) FAST_FUNC; |
Denis Vlasenko | 714701c | 2006-12-22 00:21:07 +0000 | [diff] [blame] | 366 | /* "short" copy can be detected by return value < size */ |
| 367 | /* this helper yells "short read!" if param is not -1 */ |
Denis Vlasenko | a60f84e | 2008-07-05 09:18:54 +0000 | [diff] [blame] | 368 | extern void complain_copyfd_and_die(off_t sz) NORETURN FAST_FUNC; |
Denys Vlasenko | e6df7e2 | 2011-05-23 03:39:08 +0200 | [diff] [blame] | 369 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 370 | extern char bb_process_escape_sequence(const char **ptr) FAST_FUNC; |
Denys Vlasenko | 5360059 | 2010-10-23 21:06:06 +0200 | [diff] [blame] | 371 | char* strcpy_and_process_escape_sequences(char *dst, const char *src) FAST_FUNC; |
Denis Vlasenko | 818322b | 2007-09-24 18:27:04 +0000 | [diff] [blame] | 372 | /* xxxx_strip version can modify its parameter: |
| 373 | * "/" -> "/" |
| 374 | * "abc" -> "abc" |
| 375 | * "abc/def" -> "def" |
| 376 | * "abc/def/" -> "def" !! |
| 377 | */ |
Denys Vlasenko | e6df7e2 | 2011-05-23 03:39:08 +0200 | [diff] [blame] | 378 | char *bb_get_last_path_component_strip(char *path) FAST_FUNC; |
Denis Vlasenko | 818322b | 2007-09-24 18:27:04 +0000 | [diff] [blame] | 379 | /* "abc/def/" -> "" and it never modifies 'path' */ |
Denys Vlasenko | e6df7e2 | 2011-05-23 03:39:08 +0200 | [diff] [blame] | 380 | char *bb_get_last_path_component_nostrip(const char *path) FAST_FUNC; |
| 381 | /* Simpler version: does not special case "/" string */ |
| 382 | const char *bb_basename(const char *name) FAST_FUNC; |
| 383 | /* NB: can violate const-ness (similarly to strchr) */ |
| 384 | char *last_char_is(const char *s, int c) FAST_FUNC; |
Denis Vlasenko | cad04ef | 2007-03-25 23:21:05 +0000 | [diff] [blame] | 385 | |
Denys Vlasenko | e9a40e3 | 2011-01-24 00:29:55 +0100 | [diff] [blame] | 386 | void ndelay_on(int fd) FAST_FUNC; |
| 387 | void ndelay_off(int fd) FAST_FUNC; |
| 388 | void close_on_exec_on(int fd) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 389 | void xdup2(int, int) FAST_FUNC; |
| 390 | void xmove_fd(int, int) FAST_FUNC; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 391 | |
| 392 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 393 | DIR *xopendir(const char *path) FAST_FUNC; |
| 394 | DIR *warn_opendir(const char *path) FAST_FUNC; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 395 | |
Jérémie Koenig | fbedacf | 2010-03-26 19:08:53 +0100 | [diff] [blame] | 396 | char *xmalloc_realpath(const char *path) FAST_FUNC RETURNS_MALLOC; |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 397 | char *xmalloc_readlink(const char *path) FAST_FUNC RETURNS_MALLOC; |
| 398 | char *xmalloc_readlink_or_warn(const char *path) FAST_FUNC RETURNS_MALLOC; |
Denys Vlasenko | b57eee8 | 2009-11-04 17:54:17 +0100 | [diff] [blame] | 399 | /* !RETURNS_MALLOC: it's a realloc-like function */ |
| 400 | char *xrealloc_getcwd_or_warn(char *cwd) FAST_FUNC; |
Denis Vlasenko | 2856dab | 2007-04-01 01:18:20 +0000 | [diff] [blame] | 401 | |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 402 | char *xmalloc_follow_symlinks(const char *path) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | 473dae0 | 2007-04-11 07:04:23 +0000 | [diff] [blame] | 403 | |
Denis Vlasenko | 8e2cfec | 2008-03-12 23:19:35 +0000 | [diff] [blame] | 404 | |
Denis Vlasenko | 3319637 | 2008-02-23 01:25:38 +0000 | [diff] [blame] | 405 | enum { |
Denis Vlasenko | cf7cf62 | 2008-03-19 19:38:46 +0000 | [diff] [blame] | 406 | /* bb_signals(BB_FATAL_SIGS, handler) catches all signals which |
Denis Vlasenko | 3319637 | 2008-02-23 01:25:38 +0000 | [diff] [blame] | 407 | * otherwise would kill us, except for those resulting from bugs: |
| 408 | * SIGSEGV, SIGILL, SIGFPE. |
| 409 | * Other fatal signals not included (TODO?): |
| 410 | * SIGBUS Bus error (bad memory access) |
| 411 | * SIGPOLL Pollable event. Synonym of SIGIO |
| 412 | * SIGPROF Profiling timer expired |
| 413 | * SIGSYS Bad argument to routine |
| 414 | * SIGTRAP Trace/breakpoint trap |
Denis Vlasenko | d943af0 | 2008-03-30 15:56:38 +0000 | [diff] [blame] | 415 | * |
| 416 | * The only known arch with some of these sigs not fitting |
| 417 | * into 32 bits is parisc (SIGXCPU=33, SIGXFSZ=34, SIGSTKFLT=36). |
| 418 | * Dance around with long long to guard against that... |
Denis Vlasenko | 3319637 | 2008-02-23 01:25:38 +0000 | [diff] [blame] | 419 | */ |
Denis Vlasenko | d943af0 | 2008-03-30 15:56:38 +0000 | [diff] [blame] | 420 | BB_FATAL_SIGS = (int)(0 |
| 421 | + (1LL << SIGHUP) |
| 422 | + (1LL << SIGINT) |
| 423 | + (1LL << SIGTERM) |
| 424 | + (1LL << SIGPIPE) // Write to pipe with no readers |
| 425 | + (1LL << SIGQUIT) // Quit from keyboard |
| 426 | + (1LL << SIGABRT) // Abort signal from abort(3) |
| 427 | + (1LL << SIGALRM) // Timer signal from alarm(2) |
| 428 | + (1LL << SIGVTALRM) // Virtual alarm clock |
| 429 | + (1LL << SIGXCPU) // CPU time limit exceeded |
| 430 | + (1LL << SIGXFSZ) // File size limit exceeded |
| 431 | + (1LL << SIGUSR1) // Yes kids, these are also fatal! |
| 432 | + (1LL << SIGUSR2) |
| 433 | + 0), |
Denis Vlasenko | 3319637 | 2008-02-23 01:25:38 +0000 | [diff] [blame] | 434 | }; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 435 | void bb_signals(int sigs, void (*f)(int)) FAST_FUNC; |
Denis Vlasenko | 25591c3 | 2008-02-16 22:58:56 +0000 | [diff] [blame] | 436 | /* Unlike signal() and bb_signals, sets handler with sigaction() |
| 437 | * and in a way that while signal handler is run, no other signals |
Denis Vlasenko | cab28aa | 2009-01-31 01:02:07 +0000 | [diff] [blame] | 438 | * will be blocked; syscalls will not be restarted: */ |
| 439 | void bb_signals_recursive_norestart(int sigs, void (*f)(int)) FAST_FUNC; |
Denis Vlasenko | 8e2cfec | 2008-03-12 23:19:35 +0000 | [diff] [blame] | 440 | /* syscalls like read() will be interrupted with EINTR: */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 441 | void signal_no_SA_RESTART_empty_mask(int sig, void (*handler)(int)) FAST_FUNC; |
Denis Vlasenko | 8e2cfec | 2008-03-12 23:19:35 +0000 | [diff] [blame] | 442 | /* syscalls like read() won't be interrupted (though select/poll will be): */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 443 | void signal_SA_RESTART_empty_mask(int sig, void (*handler)(int)) FAST_FUNC; |
| 444 | void wait_for_any_sig(void) FAST_FUNC; |
Denis Vlasenko | a60f84e | 2008-07-05 09:18:54 +0000 | [diff] [blame] | 445 | void kill_myself_with_sig(int sig) NORETURN FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 446 | void sig_block(int sig) FAST_FUNC; |
| 447 | void sig_unblock(int sig) FAST_FUNC; |
Denis Vlasenko | 3f165fa | 2008-03-17 08:29:08 +0000 | [diff] [blame] | 448 | /* Will do sigaction(signum, act, NULL): */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 449 | int sigaction_set(int sig, const struct sigaction *act) FAST_FUNC; |
Denis Vlasenko | 3f165fa | 2008-03-17 08:29:08 +0000 | [diff] [blame] | 450 | /* SIG_BLOCK/SIG_UNBLOCK all signals: */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 451 | int sigprocmask_allsigs(int how) FAST_FUNC; |
Denis Vlasenko | 08ea11a | 2008-09-11 19:51:11 +0000 | [diff] [blame] | 452 | /* Standard handler which just records signo */ |
| 453 | extern smallint bb_got_signal; |
| 454 | void record_signo(int signo); /* not FAST_FUNC! */ |
Denis Vlasenko | 2856dab | 2007-04-01 01:18:20 +0000 | [diff] [blame] | 455 | |
Denis Vlasenko | 2856dab | 2007-04-01 01:18:20 +0000 | [diff] [blame] | 456 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 457 | void xsetgid(gid_t gid) FAST_FUNC; |
| 458 | void xsetuid(uid_t uid) FAST_FUNC; |
| 459 | void xchdir(const char *path) FAST_FUNC; |
| 460 | void xchroot(const char *path) FAST_FUNC; |
| 461 | void xsetenv(const char *key, const char *value) FAST_FUNC; |
Denis Vlasenko | 76ddc2e | 2008-12-30 05:05:31 +0000 | [diff] [blame] | 462 | void bb_unsetenv(const char *key) FAST_FUNC; |
Denys Vlasenko | dd8adde | 2010-06-24 05:00:50 +0200 | [diff] [blame] | 463 | void bb_unsetenv_and_free(char *key) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 464 | void xunlink(const char *pathname) FAST_FUNC; |
| 465 | void xstat(const char *pathname, struct stat *buf) FAST_FUNC; |
Denys Vlasenko | 8d3e225 | 2010-08-31 12:42:06 +0200 | [diff] [blame] | 466 | void xfstat(int fd, struct stat *buf, const char *errmsg) FAST_FUNC; |
Denys Vlasenko | f2a8d5d | 2009-08-21 17:40:36 +0200 | [diff] [blame] | 467 | int xopen(const char *pathname, int flags) FAST_FUNC; |
Bernhard Reutner-Fischer | a483087 | 2009-10-26 23:27:08 +0100 | [diff] [blame] | 468 | int xopen_nonblocking(const char *pathname) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 469 | int xopen3(const char *pathname, int flags, int mode) FAST_FUNC; |
| 470 | int open_or_warn(const char *pathname, int flags) FAST_FUNC; |
| 471 | int open3_or_warn(const char *pathname, int flags, int mode) FAST_FUNC; |
| 472 | int open_or_warn_stdin(const char *pathname) FAST_FUNC; |
Denys Vlasenko | e7b0a9e | 2010-08-22 05:39:15 +0200 | [diff] [blame] | 473 | int xopen_stdin(const char *pathname) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 474 | void xrename(const char *oldpath, const char *newpath) FAST_FUNC; |
| 475 | int rename_or_warn(const char *oldpath, const char *newpath) FAST_FUNC; |
| 476 | off_t xlseek(int fd, off_t offset, int whence) FAST_FUNC; |
Alexander Shishkin | 6722737 | 2010-10-22 13:27:16 +0200 | [diff] [blame] | 477 | int xmkstemp(char *template) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 478 | off_t fdlength(int fd) FAST_FUNC; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 479 | |
Denys Vlasenko | 40e7d25 | 2010-02-01 23:48:27 +0100 | [diff] [blame] | 480 | uoff_t FAST_FUNC get_volume_size_in_bytes(int fd, |
| 481 | const char *override, |
| 482 | unsigned override_units, |
| 483 | int extend); |
| 484 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 485 | void xpipe(int filedes[2]) FAST_FUNC; |
Denis Vlasenko | 3718832 | 2008-02-16 13:20:56 +0000 | [diff] [blame] | 486 | /* In this form code with pipes is much more readable */ |
| 487 | struct fd_pair { int rd; int wr; }; |
| 488 | #define piped_pair(pair) pipe(&((pair).rd)) |
| 489 | #define xpiped_pair(pair) xpipe(&((pair).rd)) |
| 490 | |
Denis Vlasenko | ed6a49c | 2007-11-18 22:56:25 +0000 | [diff] [blame] | 491 | /* Useful for having small structure members/global variables */ |
| 492 | typedef int8_t socktype_t; |
| 493 | typedef int8_t family_t; |
| 494 | struct BUG_too_small { |
| 495 | char BUG_socktype_t_too_small[(0 |
| 496 | | SOCK_STREAM |
| 497 | | SOCK_DGRAM |
| 498 | | SOCK_RDM |
| 499 | | SOCK_SEQPACKET |
| 500 | | SOCK_RAW |
| 501 | ) <= 127 ? 1 : -1]; |
| 502 | char BUG_family_t_too_small[(0 |
| 503 | | AF_UNSPEC |
| 504 | | AF_INET |
| 505 | | AF_INET6 |
| 506 | | AF_UNIX |
Mike Frysinger | 9412ec7 | 2008-02-07 22:41:33 +0000 | [diff] [blame] | 507 | #ifdef AF_PACKET |
Denis Vlasenko | ed6a49c | 2007-11-18 22:56:25 +0000 | [diff] [blame] | 508 | | AF_PACKET |
Mike Frysinger | 9412ec7 | 2008-02-07 22:41:33 +0000 | [diff] [blame] | 509 | #endif |
| 510 | #ifdef AF_NETLINK |
Denis Vlasenko | ed6a49c | 2007-11-18 22:56:25 +0000 | [diff] [blame] | 511 | | AF_NETLINK |
Mike Frysinger | 9412ec7 | 2008-02-07 22:41:33 +0000 | [diff] [blame] | 512 | #endif |
Denis Vlasenko | ed6a49c | 2007-11-18 22:56:25 +0000 | [diff] [blame] | 513 | /* | AF_DECnet */ |
| 514 | /* | AF_IPX */ |
| 515 | ) <= 127 ? 1 : -1]; |
| 516 | }; |
| 517 | |
| 518 | |
Denys Vlasenko | dc698bb | 2010-01-09 19:10:49 +0100 | [diff] [blame] | 519 | void parse_datestr(const char *date_str, struct tm *ptm) FAST_FUNC; |
| 520 | time_t validate_tm_time(const char *date_str, struct tm *ptm) FAST_FUNC; |
Denys Vlasenko | 73b71f3 | 2009-07-18 03:40:35 +0200 | [diff] [blame] | 521 | |
| 522 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 523 | int xsocket(int domain, int type, int protocol) FAST_FUNC; |
| 524 | void xbind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen) FAST_FUNC; |
| 525 | void xlisten(int s, int backlog) FAST_FUNC; |
| 526 | void xconnect(int s, const struct sockaddr *s_addr, socklen_t addrlen) FAST_FUNC; |
Denis Vlasenko | dbe6e66 | 2007-08-14 16:43:01 +0000 | [diff] [blame] | 527 | ssize_t xsendto(int s, const void *buf, size_t len, const struct sockaddr *to, |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 528 | socklen_t tolen) FAST_FUNC; |
Denis Vlasenko | 7f175cc | 2007-08-16 18:27:47 +0000 | [diff] [blame] | 529 | /* SO_REUSEADDR allows a server to rebind to an address that is already |
| 530 | * "in use" by old connections to e.g. previous server instance which is |
| 531 | * killed or crashed. Without it bind will fail until all such connections |
| 532 | * time out. Linux does not allow multiple live binds on same ip:port |
| 533 | * regardless of SO_REUSEADDR (unlike some other flavors of Unix). |
| 534 | * Turn it on before you call bind(). */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 535 | void setsockopt_reuseaddr(int fd) FAST_FUNC; /* On Linux this never fails. */ |
| 536 | int setsockopt_broadcast(int fd) FAST_FUNC; |
Denis Vlasenko | e537385 | 2008-12-10 11:12:16 +0000 | [diff] [blame] | 537 | int setsockopt_bindtodevice(int fd, const char *iface) FAST_FUNC; |
Denis Vlasenko | 85629f0 | 2007-01-22 09:36:41 +0000 | [diff] [blame] | 538 | /* NB: returns port in host byte order */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 539 | unsigned bb_lookup_port(const char *port, const char *protocol, unsigned default_port) FAST_FUNC; |
Denis Vlasenko | bbe5146 | 2007-01-10 20:19:56 +0000 | [diff] [blame] | 540 | typedef struct len_and_sockaddr { |
Denis Vlasenko | 0850cda | 2007-02-07 23:20:32 +0000 | [diff] [blame] | 541 | socklen_t len; |
Denis Vlasenko | bbe5146 | 2007-01-10 20:19:56 +0000 | [diff] [blame] | 542 | union { |
| 543 | struct sockaddr sa; |
| 544 | struct sockaddr_in sin; |
| 545 | #if ENABLE_FEATURE_IPV6 |
| 546 | struct sockaddr_in6 sin6; |
| 547 | #endif |
Bernhard Reutner-Fischer | 8c69afd | 2008-01-29 10:33:34 +0000 | [diff] [blame] | 548 | } u; |
Denis Vlasenko | bbe5146 | 2007-01-10 20:19:56 +0000 | [diff] [blame] | 549 | } len_and_sockaddr; |
Denis Vlasenko | 992e05b | 2007-04-03 01:13:04 +0000 | [diff] [blame] | 550 | enum { |
Denis Vlasenko | 4e6d511 | 2008-03-12 22:14:34 +0000 | [diff] [blame] | 551 | LSA_LEN_SIZE = offsetof(len_and_sockaddr, u), |
Denis Vlasenko | 992e05b | 2007-04-03 01:13:04 +0000 | [diff] [blame] | 552 | LSA_SIZEOF_SA = sizeof( |
| 553 | union { |
| 554 | struct sockaddr sa; |
| 555 | struct sockaddr_in sin; |
| 556 | #if ENABLE_FEATURE_IPV6 |
| 557 | struct sockaddr_in6 sin6; |
| 558 | #endif |
| 559 | } |
| 560 | ) |
| 561 | }; |
Denis Vlasenko | 5c51a7c | 2007-06-05 20:08:11 +0000 | [diff] [blame] | 562 | /* Create stream socket, and allocate suitable lsa. |
| 563 | * (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] | 564 | * af == AF_UNSPEC will result in trying to create IPv6 socket, |
Denys Vlasenko | b1278a3 | 2009-11-24 16:03:47 +0100 | [diff] [blame] | 565 | * and if kernel doesn't support it, fall back to IPv4. |
| 566 | * This is useful if you plan to bind to resulting local lsa. |
Denis Vlasenko | 5c51a7c | 2007-06-05 20:08:11 +0000 | [diff] [blame] | 567 | */ |
Denis Vlasenko | 4e6d511 | 2008-03-12 22:14:34 +0000 | [diff] [blame] | 568 | #if ENABLE_FEATURE_IPV6 |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 569 | int xsocket_type(len_and_sockaddr **lsap, int af, int sock_type) FAST_FUNC; |
Denis Vlasenko | 4e6d511 | 2008-03-12 22:14:34 +0000 | [diff] [blame] | 570 | #else |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 571 | int xsocket_type(len_and_sockaddr **lsap, int sock_type) FAST_FUNC; |
Denis Vlasenko | 4e6d511 | 2008-03-12 22:14:34 +0000 | [diff] [blame] | 572 | #define xsocket_type(lsap, af, sock_type) xsocket_type((lsap), (sock_type)) |
| 573 | #endif |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 574 | int xsocket_stream(len_and_sockaddr **lsap) FAST_FUNC; |
Denis Vlasenko | 729bd9e | 2007-04-02 12:37:28 +0000 | [diff] [blame] | 575 | /* Create server socket bound to bindaddr:port. bindaddr can be NULL, |
Denis Vlasenko | 8e9ccba | 2007-01-11 16:50:23 +0000 | [diff] [blame] | 576 | * numeric IP ("N.N.N.N") or numeric IPv6 address, |
| 577 | * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT"). |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 578 | * Only if there is no suffix, port argument is used */ |
Denis Vlasenko | 7f175cc | 2007-08-16 18:27:47 +0000 | [diff] [blame] | 579 | /* NB: these set SO_REUSEADDR before bind */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 580 | int create_and_bind_stream_or_die(const char *bindaddr, int port) FAST_FUNC; |
| 581 | int create_and_bind_dgram_or_die(const char *bindaddr, int port) FAST_FUNC; |
Denis Vlasenko | 8e9ccba | 2007-01-11 16:50:23 +0000 | [diff] [blame] | 582 | /* Create client TCP socket connected to peer:port. Peer cannot be NULL. |
| 583 | * Peer can be numeric IP ("N.N.N.N"), numeric IPv6 address or hostname, |
| 584 | * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT"). |
| 585 | * If there is no suffix, port argument is used */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 586 | int create_and_connect_stream_or_die(const char *peer, int port) FAST_FUNC; |
Denis Vlasenko | 8e9ccba | 2007-01-11 16:50:23 +0000 | [diff] [blame] | 587 | /* Connect to peer identified by lsa */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 588 | int xconnect_stream(const len_and_sockaddr *lsa) FAST_FUNC; |
Denis Vlasenko | 73c571a | 2009-03-09 00:12:37 +0000 | [diff] [blame] | 589 | /* Get local address of bound or accepted socket */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 590 | len_and_sockaddr *get_sock_lsa(int fd) FAST_FUNC RETURNS_MALLOC; |
Denys Vlasenko | f6916db | 2010-04-06 17:43:29 +0200 | [diff] [blame] | 591 | /* Get remote address of connected or accepted socket */ |
| 592 | len_and_sockaddr *get_peer_lsa(int fd) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | bbe5146 | 2007-01-10 20:19:56 +0000 | [diff] [blame] | 593 | /* Return malloc'ed len_and_sockaddr with socket address of host:port |
| 594 | * Currently will return IPv4 or IPv6 sockaddrs only |
| 595 | * (depending on host), but in theory nothing prevents e.g. |
Denis Vlasenko | 5870ad9 | 2007-02-04 02:39:55 +0000 | [diff] [blame] | 596 | * UNIX socket address being returned, IPX sockaddr etc... |
| 597 | * On error does bb_error_msg and returns NULL */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 598 | len_and_sockaddr* host2sockaddr(const char *host, int port) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | e991303 | 2007-02-04 02:41:57 +0000 | [diff] [blame] | 599 | /* Version which dies on error */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 600 | len_and_sockaddr* xhost2sockaddr(const char *host, int port) FAST_FUNC RETURNS_MALLOC; |
| 601 | len_and_sockaddr* xdotted2sockaddr(const char *host, int port) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | 9adc6ce | 2007-01-22 22:45:27 +0000 | [diff] [blame] | 602 | /* Same, useful if you want to force family (e.g. IPv6) */ |
Denis Vlasenko | 4e6d511 | 2008-03-12 22:14:34 +0000 | [diff] [blame] | 603 | #if !ENABLE_FEATURE_IPV6 |
| 604 | #define host_and_af2sockaddr(host, port, af) host2sockaddr((host), (port)) |
| 605 | #define xhost_and_af2sockaddr(host, port, af) xhost2sockaddr((host), (port)) |
| 606 | #else |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 607 | len_and_sockaddr* host_and_af2sockaddr(const char *host, int port, sa_family_t af) FAST_FUNC RETURNS_MALLOC; |
| 608 | len_and_sockaddr* xhost_and_af2sockaddr(const char *host, int port, sa_family_t af) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | 9adc6ce | 2007-01-22 22:45:27 +0000 | [diff] [blame] | 609 | #endif |
Denis Vlasenko | 7f175cc | 2007-08-16 18:27:47 +0000 | [diff] [blame] | 610 | /* 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] | 611 | * otherwise no-op. Useful for ftp. |
Denis Vlasenko | 8e9ccba | 2007-01-11 16:50:23 +0000 | [diff] [blame] | 612 | * NB: does NOT do htons() internally, just direct assignment. */ |
Denys Vlasenko | ca18311 | 2011-04-07 17:52:20 +0200 | [diff] [blame] | 613 | void set_nport(struct sockaddr *sa, unsigned port) FAST_FUNC; |
Denis Vlasenko | 85629f0 | 2007-01-22 09:36:41 +0000 | [diff] [blame] | 614 | /* Retrieve sin[6]_port or return -1 for non-INET[6] lsa's */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 615 | int get_nport(const struct sockaddr *sa) FAST_FUNC; |
Denis Vlasenko | 9adc6ce | 2007-01-22 22:45:27 +0000 | [diff] [blame] | 616 | /* Reverse DNS. Returns NULL on failure. */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 617 | char* xmalloc_sockaddr2host(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | 9adc6ce | 2007-01-22 22:45:27 +0000 | [diff] [blame] | 618 | /* This one doesn't append :PORTNUM */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 619 | char* xmalloc_sockaddr2host_noport(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | 9adc6ce | 2007-01-22 22:45:27 +0000 | [diff] [blame] | 620 | /* This one also doesn't fall back to dotted IP (returns NULL) */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 621 | char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | 448f024 | 2007-01-22 22:43:05 +0000 | [diff] [blame] | 622 | /* inet_[ap]ton on steroids */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 623 | char* xmalloc_sockaddr2dotted(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC; |
| 624 | char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | 85629f0 | 2007-01-22 09:36:41 +0000 | [diff] [blame] | 625 | // "old" (ipv4 only) API |
Denis Vlasenko | 729bd9e | 2007-04-02 12:37:28 +0000 | [diff] [blame] | 626 | // users: traceroute.c hostname.c - use _list_ of all IPs |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 627 | struct hostent *xgethostbyname(const char *name) FAST_FUNC; |
Denis Vlasenko | 729bd9e | 2007-04-02 12:37:28 +0000 | [diff] [blame] | 628 | // Also mount.c and inetd.c are using gethostbyname(), |
Denis Vlasenko | e991303 | 2007-02-04 02:41:57 +0000 | [diff] [blame] | 629 | // + inet_common.c has additional IPv4-only stuff |
Denis Vlasenko | c8717cd | 2006-11-22 16:10:39 +0000 | [diff] [blame] | 630 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 631 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 632 | void socket_want_pktinfo(int fd) FAST_FUNC; |
Denis Vlasenko | 29fe726 | 2007-04-05 20:26:28 +0000 | [diff] [blame] | 633 | ssize_t send_to_from(int fd, void *buf, size_t len, int flags, |
Denis Vlasenko | 081eb71 | 2008-03-17 09:02:21 +0000 | [diff] [blame] | 634 | const struct sockaddr *to, |
| 635 | const struct sockaddr *from, |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 636 | socklen_t tolen) FAST_FUNC; |
Denis Vlasenko | 29fe726 | 2007-04-05 20:26:28 +0000 | [diff] [blame] | 637 | ssize_t recv_from_to(int fd, void *buf, size_t len, int flags, |
Denis Vlasenko | 081eb71 | 2008-03-17 09:02:21 +0000 | [diff] [blame] | 638 | struct sockaddr *from, |
| 639 | struct sockaddr *to, |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 640 | socklen_t sa_size) FAST_FUNC; |
Denis Vlasenko | 29fe726 | 2007-04-05 20:26:28 +0000 | [diff] [blame] | 641 | |
Baruch Siach | e8f3633 | 2011-09-07 17:52:37 +0200 | [diff] [blame] | 642 | uint16_t inet_cksum(uint16_t *addr, int len) FAST_FUNC; |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 643 | |
| 644 | char *xstrdup(const char *s) FAST_FUNC RETURNS_MALLOC; |
| 645 | char *xstrndup(const char *s, int n) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | 0f293b9 | 2008-07-22 20:16:55 +0000 | [diff] [blame] | 646 | void overlapping_strcpy(char *dst, const char *src) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 647 | char *safe_strncpy(char *dst, const char *src, size_t size) FAST_FUNC; |
Denis Vlasenko | 360d966 | 2008-12-02 18:18:50 +0000 | [diff] [blame] | 648 | char *strncpy_IFNAMSIZ(char *dst, const char *src) FAST_FUNC; |
Denis Vlasenko | 4daad90 | 2007-09-27 10:20:47 +0000 | [diff] [blame] | 649 | /* 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] | 650 | * But potentially slow, don't use in one-billion-times loops */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 651 | int bb_putchar(int ch) FAST_FUNC; |
Denys Vlasenko | 19ced5c | 2010-06-06 21:53:09 +0200 | [diff] [blame] | 652 | /* Note: does not use stdio, writes to fd 2 directly */ |
| 653 | int bb_putchar_stderr(char ch) FAST_FUNC; |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 654 | char *xasprintf(const char *format, ...) __attribute__ ((format(printf, 1, 2))) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | 9f73944 | 2006-12-16 23:49:13 +0000 | [diff] [blame] | 655 | // gcc-4.1.1 still isn't good enough at optimizing it |
| 656 | // (+200 bytes compared to macro) |
Denis Vlasenko | 3ad5d0c | 2007-06-12 20:54:54 +0000 | [diff] [blame] | 657 | //static ALWAYS_INLINE |
Denis Vlasenko | 9f73944 | 2006-12-16 23:49:13 +0000 | [diff] [blame] | 658 | //int LONE_DASH(const char *s) { return s[0] == '-' && !s[1]; } |
Denis Vlasenko | 3ad5d0c | 2007-06-12 20:54:54 +0000 | [diff] [blame] | 659 | //static ALWAYS_INLINE |
Denis Vlasenko | 9f73944 | 2006-12-16 23:49:13 +0000 | [diff] [blame] | 660 | //int NOT_LONE_DASH(const char *s) { return s[0] != '-' || s[1]; } |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 661 | #define LONE_DASH(s) ((s)[0] == '-' && !(s)[1]) |
Denis Vlasenko | 9f73944 | 2006-12-16 23:49:13 +0000 | [diff] [blame] | 662 | #define NOT_LONE_DASH(s) ((s)[0] != '-' || (s)[1]) |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 663 | #define LONE_CHAR(s,c) ((s)[0] == (c) && !(s)[1]) |
Denis Vlasenko | bf66fbc | 2006-12-21 13:23:14 +0000 | [diff] [blame] | 664 | #define NOT_LONE_CHAR(s,c) ((s)[0] != (c) || (s)[1]) |
Denis Vlasenko | 16abcd9 | 2007-04-13 23:59:52 +0000 | [diff] [blame] | 665 | #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] | 666 | |
Denys Vlasenko | d8528b8 | 2010-01-31 05:15:38 +0100 | [diff] [blame] | 667 | typedef struct uni_stat_t { |
| 668 | unsigned byte_count; |
| 669 | unsigned unicode_count; |
| 670 | unsigned unicode_width; |
| 671 | } uni_stat_t; |
| 672 | /* Returns a string with unprintable chars replaced by '?' or |
| 673 | * SUBST_WCHAR. This function is unicode-aware. */ |
| 674 | const char* FAST_FUNC printable_string(uni_stat_t *stats, const char *str); |
| 675 | /* Prints unprintable char ch as ^C or M-c to file |
| 676 | * (M-c is used only if ch is ORed with PRINTABLE_META), |
| 677 | * else it is printed as-is (except for ch = 0x9b) */ |
| 678 | enum { PRINTABLE_META = 0x100 }; |
| 679 | void fputc_printable(int ch, FILE *file) FAST_FUNC; |
| 680 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 681 | /* dmalloc will redefine these to it's own implementation. It is safe |
| 682 | * to have the prototypes here unconditionally. */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 683 | void *malloc_or_warn(size_t size) FAST_FUNC RETURNS_MALLOC; |
| 684 | void *xmalloc(size_t size) FAST_FUNC RETURNS_MALLOC; |
| 685 | void *xzalloc(size_t size) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | deeed59 | 2008-07-08 05:14:36 +0000 | [diff] [blame] | 686 | void *xrealloc(void *old, size_t size) FAST_FUNC; |
Denis Vlasenko | 2784228 | 2008-08-04 13:20:36 +0000 | [diff] [blame] | 687 | /* After xrealloc_vector(v, 4, idx) it's ok to use |
| 688 | * at least v[idx] and v[idx+1], for all idx values. |
| 689 | * shift specifies how many new elements are added (1: 2, 2: 4... 8: 256...) |
| 690 | * when all elements are used up. New elements are zeroed out. */ |
Denis Vlasenko | deeed59 | 2008-07-08 05:14:36 +0000 | [diff] [blame] | 691 | #define xrealloc_vector(vector, shift, idx) \ |
| 692 | xrealloc_vector_helper((vector), (sizeof((vector)[0]) << 8) + (shift), (idx)) |
| 693 | void* xrealloc_vector_helper(void *vector, unsigned sizeof_and_shift, int idx) FAST_FUNC; |
| 694 | |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 695 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 696 | extern ssize_t safe_read(int fd, void *buf, size_t count) FAST_FUNC; |
Denys Vlasenko | 80542ba | 2011-05-08 21:23:43 +0200 | [diff] [blame] | 697 | extern ssize_t nonblock_immune_read(int fd, void *buf, size_t count, int loop_on_EINTR) FAST_FUNC; |
Denis Vlasenko | 394eebe | 2008-02-25 20:30:24 +0000 | [diff] [blame] | 698 | // NB: will return short read on error, not -1, |
| 699 | // if some data was read before error occurred |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 700 | extern ssize_t full_read(int fd, void *buf, size_t count) FAST_FUNC; |
| 701 | extern void xread(int fd, void *buf, size_t count) FAST_FUNC; |
| 702 | extern unsigned char xread_char(int fd) FAST_FUNC; |
Denis Vlasenko | b605272 | 2008-07-10 17:43:01 +0000 | [diff] [blame] | 703 | extern ssize_t read_close(int fd, void *buf, size_t maxsz) FAST_FUNC; |
| 704 | extern ssize_t open_read_close(const char *filename, void *buf, size_t maxsz) FAST_FUNC; |
Denis Vlasenko | 8ee649a | 2008-03-26 20:04:27 +0000 | [diff] [blame] | 705 | // Reads one line a-la fgets (but doesn't save terminating '\n'). |
| 706 | // Reads byte-by-byte. Useful when it is important to not read ahead. |
Denis Vlasenko | e376d45 | 2008-02-20 22:23:24 +0000 | [diff] [blame] | 707 | // Bytes are appended to pfx (which must be malloced, or NULL). |
Denys Vlasenko | 80c5b68 | 2011-05-08 21:21:10 +0200 | [diff] [blame] | 708 | extern char *xmalloc_reads(int fd, size_t *maxsz_p) FAST_FUNC; |
Denis Vlasenko | 9f57cf6 | 2009-03-18 17:32:44 +0000 | [diff] [blame] | 709 | /* Reads block up to *maxsz_p (default: INT_MAX - 4095) */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 710 | extern void *xmalloc_read(int fd, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | 9f57cf6 | 2009-03-18 17:32:44 +0000 | [diff] [blame] | 711 | /* Returns NULL if file can't be opened (default max size: INT_MAX - 4095) */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 712 | extern void *xmalloc_open_read_close(const char *filename, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC; |
Denys Vlasenko | 094cc51 | 2011-01-17 14:58:27 +0100 | [diff] [blame] | 713 | /* Never returns NULL */ |
| 714 | extern void *xmalloc_xopen_read_close(const char *filename, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC; |
Denys Vlasenko | 27653ad | 2010-05-06 14:19:19 +0000 | [diff] [blame] | 715 | /* Autodetects gzip/bzip2 formats. fd may be in the middle of the file! */ |
| 716 | #if ENABLE_FEATURE_SEAMLESS_LZMA \ |
| 717 | || ENABLE_FEATURE_SEAMLESS_BZ2 \ |
| 718 | || ENABLE_FEATURE_SEAMLESS_GZ \ |
| 719 | /* || ENABLE_FEATURE_SEAMLESS_Z */ |
Denys Vlasenko | 6948f21 | 2010-05-30 04:18:13 +0200 | [diff] [blame] | 720 | extern void setup_unzip_on_fd(int fd /*, int fail_if_not_detected*/) FAST_FUNC; |
Denys Vlasenko | 27653ad | 2010-05-06 14:19:19 +0000 | [diff] [blame] | 721 | #else |
| 722 | # define setup_unzip_on_fd(...) ((void)0) |
| 723 | #endif |
Denis Vlasenko | b605272 | 2008-07-10 17:43:01 +0000 | [diff] [blame] | 724 | /* Autodetects .gz etc */ |
Denis Vlasenko | e9ad84d | 2008-08-05 13:10:34 +0000 | [diff] [blame] | 725 | extern int open_zipped(const char *fname) FAST_FUNC; |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 726 | extern void *xmalloc_open_zipped_read_close(const char *fname, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | ea62077 | 2006-10-14 02:23:43 +0000 | [diff] [blame] | 727 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 728 | extern ssize_t safe_write(int fd, const void *buf, size_t count) FAST_FUNC; |
Denis Vlasenko | 394eebe | 2008-02-25 20:30:24 +0000 | [diff] [blame] | 729 | // NB: will return short write on error, not -1, |
| 730 | // if some data was written before error occurred |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 731 | extern ssize_t full_write(int fd, const void *buf, size_t count) FAST_FUNC; |
| 732 | extern void xwrite(int fd, const void *buf, size_t count) FAST_FUNC; |
Denis Vlasenko | 73c571a | 2009-03-09 00:12:37 +0000 | [diff] [blame] | 733 | extern void xwrite_str(int fd, const char *str) FAST_FUNC; |
Denys Vlasenko | 729ecb8 | 2010-06-07 14:14:26 +0200 | [diff] [blame] | 734 | extern ssize_t full_write1_str(const char *str) FAST_FUNC; |
| 735 | extern ssize_t full_write2_str(const char *str) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 736 | extern void xopen_xwrite_close(const char* file, const char *str) FAST_FUNC; |
Denis Vlasenko | ea62077 | 2006-10-14 02:23:43 +0000 | [diff] [blame] | 737 | |
Denys Vlasenko | dcd27ab | 2009-10-05 03:03:07 +0200 | [diff] [blame] | 738 | /* Close fd, but check for failures (some types of write errors) */ |
| 739 | extern void xclose(int fd) FAST_FUNC; |
| 740 | |
Denis Vlasenko | 1de0830 | 2006-10-26 23:32:43 +0000 | [diff] [blame] | 741 | /* Reads and prints to stdout till eof, then closes FILE. Exits on error: */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 742 | extern void xprint_and_close_file(FILE *file) FAST_FUNC; |
Denis Vlasenko | 2132e02 | 2008-07-15 10:33:12 +0000 | [diff] [blame] | 743 | |
Denys Vlasenko | a1a4483 | 2011-06-17 03:37:43 +0200 | [diff] [blame] | 744 | /* Reads a line from a text file, up to a newline or NUL byte, inclusive. |
| 745 | * Returns malloc'ed char*. If end is NULL '\n' isn't considered |
| 746 | * end of line. If end isn't NULL, length of the chunk is stored in it. |
| 747 | * Returns NULL if EOF/error. |
| 748 | */ |
Denis Vlasenko | 2132e02 | 2008-07-15 10:33:12 +0000 | [diff] [blame] | 749 | extern char *bb_get_chunk_from_file(FILE *file, int *end) FAST_FUNC; |
Denis Vlasenko | abee3d0 | 2007-12-26 20:44:45 +0000 | [diff] [blame] | 750 | /* Reads up to (and including) TERMINATING_STRING: */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 751 | extern char *xmalloc_fgets_str(FILE *file, const char *terminating_string) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | 9f57cf6 | 2009-03-18 17:32:44 +0000 | [diff] [blame] | 752 | /* Same, with limited max size, and returns the length (excluding NUL): */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 753 | extern char *xmalloc_fgets_str_len(FILE *file, const char *terminating_string, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | f3745ea | 2008-04-19 19:32:08 +0000 | [diff] [blame] | 754 | /* Chops off TERMINATING_STRING from the end: */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 755 | extern char *xmalloc_fgetline_str(FILE *file, const char *terminating_string) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | f3745ea | 2008-04-19 19:32:08 +0000 | [diff] [blame] | 756 | /* Reads up to (and including) "\n" or NUL byte: */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 757 | extern char *xmalloc_fgets(FILE *file) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | ddec5af | 2006-10-26 23:25:17 +0000 | [diff] [blame] | 758 | /* Chops off '\n' from the end, unlike fgets: */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 759 | extern char *xmalloc_fgetline(FILE *file) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | 2132e02 | 2008-07-15 10:33:12 +0000 | [diff] [blame] | 760 | /* Same, but doesn't try to conserve space (may have some slack after the end) */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 761 | /* extern char *xmalloc_fgetline_fast(FILE *file) FAST_FUNC RETURNS_MALLOC; */ |
Denis Vlasenko | 2132e02 | 2008-07-15 10:33:12 +0000 | [diff] [blame] | 762 | |
Denys Vlasenko | a7ccdee | 2009-11-15 23:28:11 +0100 | [diff] [blame] | 763 | void die_if_ferror(FILE *file, const char *msg) FAST_FUNC; |
| 764 | void die_if_ferror_stdout(void) FAST_FUNC; |
| 765 | int fflush_all(void) FAST_FUNC; |
| 766 | void fflush_stdout_and_exit(int retval) NORETURN FAST_FUNC; |
| 767 | int fclose_if_not_stdin(FILE *file) FAST_FUNC; |
| 768 | FILE* xfopen(const char *filename, const char *mode) FAST_FUNC; |
Denis Vlasenko | ddec5af | 2006-10-26 23:25:17 +0000 | [diff] [blame] | 769 | /* Prints warning to stderr and returns NULL on failure: */ |
Denys Vlasenko | a7ccdee | 2009-11-15 23:28:11 +0100 | [diff] [blame] | 770 | FILE* fopen_or_warn(const char *filename, const char *mode) FAST_FUNC; |
Denis Vlasenko | ddec5af | 2006-10-26 23:25:17 +0000 | [diff] [blame] | 771 | /* "Opens" stdin if filename is special, else just opens file: */ |
Denys Vlasenko | a7ccdee | 2009-11-15 23:28:11 +0100 | [diff] [blame] | 772 | FILE* xfopen_stdin(const char *filename) FAST_FUNC; |
| 773 | FILE* fopen_or_warn_stdin(const char *filename) FAST_FUNC; |
| 774 | FILE* fopen_for_read(const char *path) FAST_FUNC; |
| 775 | FILE* xfopen_for_read(const char *path) FAST_FUNC; |
| 776 | FILE* fopen_for_write(const char *path) FAST_FUNC; |
| 777 | FILE* xfopen_for_write(const char *path) FAST_FUNC; |
| 778 | FILE* xfdopen_for_read(int fd) FAST_FUNC; |
| 779 | FILE* xfdopen_for_write(int fd) FAST_FUNC; |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 780 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 781 | int bb_pstrcmp(const void *a, const void *b) /* not FAST_FUNC! */; |
| 782 | void qsort_string_vector(char **sv, unsigned count) FAST_FUNC; |
Denis Vlasenko | fb29038 | 2008-03-02 12:51:26 +0000 | [diff] [blame] | 783 | |
Denis Vlasenko | 5d61e71 | 2007-09-27 10:09:59 +0000 | [diff] [blame] | 784 | /* Wrapper which restarts poll on EINTR or ENOMEM. |
| 785 | * On other errors complains [perror("poll")] and returns. |
| 786 | * Warning! May take (much) longer than timeout_ms to return! |
| 787 | * If this is a problem, use bare poll and open-code EINTR/ENOMEM handling */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 788 | int safe_poll(struct pollfd *ufds, nfds_t nfds, int timeout_ms) FAST_FUNC; |
Denis Vlasenko | 5d61e71 | 2007-09-27 10:09:59 +0000 | [diff] [blame] | 789 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 790 | char *safe_gethostname(void) FAST_FUNC; |
Denis Vlasenko | c94d356 | 2008-06-30 13:30:21 +0000 | [diff] [blame] | 791 | char *safe_getdomainname(void) FAST_FUNC; |
Denis Vlasenko | 6f1713f | 2008-02-25 23:23:58 +0000 | [diff] [blame] | 792 | |
Bernhard Reutner-Fischer | 8b1fab2 | 2007-04-10 09:38:07 +0000 | [diff] [blame] | 793 | /* Convert each alpha char in str to lower-case */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 794 | char* str_tolower(char *str) FAST_FUNC; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 795 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 796 | char *utoa(unsigned n) FAST_FUNC; |
| 797 | char *itoa(int n) FAST_FUNC; |
Denis Vlasenko | 10457b9 | 2007-03-27 22:01:31 +0000 | [diff] [blame] | 798 | /* Returns a pointer past the formatted number, does NOT null-terminate */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 799 | char *utoa_to_buf(unsigned n, char *buf, unsigned buflen) FAST_FUNC; |
| 800 | char *itoa_to_buf(int n, char *buf, unsigned buflen) FAST_FUNC; |
Denis Vlasenko | 56ea65c | 2008-01-06 03:26:53 +0000 | [diff] [blame] | 801 | /* Intelligent formatters of bignums */ |
Kevin Cernekee | ccb0704 | 2010-10-25 02:00:24 +0200 | [diff] [blame] | 802 | void smart_ulltoa4(unsigned long long ul, char buf[4], const char *scale) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 803 | void smart_ulltoa5(unsigned long long ul, char buf[5], const char *scale) FAST_FUNC; |
Denys Vlasenko | 0bf44d0 | 2009-10-13 01:25:09 +0200 | [diff] [blame] | 804 | /* If block_size == 0, display size without fractional part, |
| 805 | * else display (size * block_size) with one decimal digit. |
Denys Vlasenko | 9c3b84a | 2010-01-18 01:55:00 +0100 | [diff] [blame] | 806 | * If display_unit == 0, show value no bigger than 1024 with suffix (K,M,G...), |
Denys Vlasenko | 0bf44d0 | 2009-10-13 01:25:09 +0200 | [diff] [blame] | 807 | * else divide by display_unit and do not use suffix. */ |
Denys Vlasenko | 9c3b84a | 2010-01-18 01:55:00 +0100 | [diff] [blame] | 808 | #define HUMAN_READABLE_MAX_WIDTH 7 /* "1024.0G" */ |
| 809 | #define HUMAN_READABLE_MAX_WIDTH_STR "7" |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 810 | //TODO: provide pointer to buf (avoid statics)? |
| 811 | const char *make_human_readable_str(unsigned long long size, |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 812 | unsigned long block_size, unsigned long display_unit) FAST_FUNC; |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 813 | /* Put a string of hex bytes ("1b2e66fe"...), return advanced pointer */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 814 | char *bin2hex(char *buf, const char *cp, int count) FAST_FUNC; |
Denys Vlasenko | 4836331 | 2010-04-04 15:29:32 +0200 | [diff] [blame] | 815 | /* Reverse */ |
| 816 | char* hex2bin(char *dst, const char *str, int count) FAST_FUNC; |
Rob Landley | c5b1d4d | 2006-03-13 15:45:16 +0000 | [diff] [blame] | 817 | |
Vladimir Dronnikov | db67a20 | 2009-10-15 09:24:25 +0200 | [diff] [blame] | 818 | /* Generate a UUID */ |
| 819 | void generate_uuid(uint8_t *buf) FAST_FUNC; |
| 820 | |
Denis Vlasenko | 1bab1de | 2007-07-27 15:30:39 +0000 | [diff] [blame] | 821 | /* Last element is marked by mult == 0 */ |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 822 | struct suffix_mult { |
Denis Vlasenko | f868963 | 2007-07-27 15:06:25 +0000 | [diff] [blame] | 823 | char suffix[4]; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 824 | unsigned mult; |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 825 | }; |
Denis Vlasenko | ed836cd | 2006-11-25 14:44:13 +0000 | [diff] [blame] | 826 | #include "xatonum.h" |
Denis Vlasenko | 1385899 | 2006-10-08 12:49:22 +0000 | [diff] [blame] | 827 | /* Specialized: */ |
Denys Vlasenko | 7783248 | 2010-08-12 14:14:45 +0200 | [diff] [blame] | 828 | |
Denis Vlasenko | 1385899 | 2006-10-08 12:49:22 +0000 | [diff] [blame] | 829 | /* Using xatoi() instead of naive atoi() is not always convenient - |
| 830 | * in many places people want *non-negative* values, but store them |
| 831 | * in signed int. Therefore we need this one: |
Denys Vlasenko | 7783248 | 2010-08-12 14:14:45 +0200 | [diff] [blame] | 832 | * dies if input is not in [0, INT_MAX] range. Also will reject '-0' etc. |
| 833 | * It should really be named xatoi_nonnegative (since it allows 0), |
| 834 | * but that would be too long. |
| 835 | */ |
| 836 | int xatoi_positive(const char *numstr) FAST_FUNC; |
| 837 | |
Denis Vlasenko | 1385899 | 2006-10-08 12:49:22 +0000 | [diff] [blame] | 838 | /* Useful for reading port numbers */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 839 | uint16_t xatou16(const char *numstr) FAST_FUNC; |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 840 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 841 | |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 842 | /* These parse entries in /etc/passwd and /etc/group. This is desirable |
| 843 | * 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] | 844 | * increases target size and is often not needed on embedded systems. */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 845 | long xuname2uid(const char *name) FAST_FUNC; |
| 846 | long xgroup2gid(const char *name) FAST_FUNC; |
Denis Vlasenko | 9a44c4f | 2006-12-28 05:44:47 +0000 | [diff] [blame] | 847 | /* wrapper: allows string to contain numeric uid or gid */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 848 | unsigned long get_ug_id(const char *s, long FAST_FUNC (*xname2id)(const char *)) FAST_FUNC; |
Denis Vlasenko | 9a44c4f | 2006-12-28 05:44:47 +0000 | [diff] [blame] | 849 | /* from chpst. Does not die, returns 0 on failure */ |
Denis Vlasenko | de59c0f | 2006-10-05 22:50:22 +0000 | [diff] [blame] | 850 | struct bb_uidgid_t { |
Denis Vlasenko | 150f402 | 2007-01-13 21:06:21 +0000 | [diff] [blame] | 851 | uid_t uid; |
| 852 | gid_t gid; |
Denis Vlasenko | de59c0f | 2006-10-05 22:50:22 +0000 | [diff] [blame] | 853 | }; |
Denis Vlasenko | cce3858 | 2007-02-26 22:47:42 +0000 | [diff] [blame] | 854 | /* always sets uid and gid */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 855 | int get_uidgid(struct bb_uidgid_t*, const char*, int numeric_ok) FAST_FUNC; |
Bernhard Reutner-Fischer | d73cbd3 | 2008-07-21 14:41:33 +0000 | [diff] [blame] | 856 | /* always sets uid and gid, allows numeric; exits on failure */ |
| 857 | void xget_uidgid(struct bb_uidgid_t*, const char*) FAST_FUNC; |
Denis Vlasenko | cce3858 | 2007-02-26 22:47:42 +0000 | [diff] [blame] | 858 | /* chown-like handling of "user[:[group]" */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 859 | void parse_chown_usergroup_or_die(struct bb_uidgid_t *u, char *user_group) FAST_FUNC; |
Denis Vlasenko | d7a805e | 2008-12-03 19:05:55 +0000 | [diff] [blame] | 860 | struct passwd* xgetpwnam(const char *name) FAST_FUNC; |
Denis Vlasenko | 15437e3 | 2008-12-05 16:23:06 +0000 | [diff] [blame] | 861 | struct group* xgetgrnam(const char *name) FAST_FUNC; |
Denis Vlasenko | 0c68a87 | 2008-12-02 22:56:59 +0000 | [diff] [blame] | 862 | struct passwd* xgetpwuid(uid_t uid) FAST_FUNC; |
| 863 | struct group* xgetgrgid(gid_t gid) FAST_FUNC; |
| 864 | char* xuid2uname(uid_t uid) FAST_FUNC; |
| 865 | char* xgid2group(gid_t gid) FAST_FUNC; |
| 866 | char* uid2uname(uid_t uid) FAST_FUNC; |
| 867 | char* gid2group(gid_t gid) FAST_FUNC; |
Denys Vlasenko | 7d65abe | 2011-03-01 16:27:13 +0100 | [diff] [blame] | 868 | char* uid2uname_utoa(uid_t uid) FAST_FUNC; |
| 869 | char* gid2group_utoa(gid_t gid) FAST_FUNC; |
Denis Vlasenko | 2405ad6 | 2007-01-19 21:24:17 +0000 | [diff] [blame] | 870 | /* versions which cache results (useful for ps, ls etc) */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 871 | const char* get_cached_username(uid_t uid) FAST_FUNC; |
| 872 | const char* get_cached_groupname(gid_t gid) FAST_FUNC; |
| 873 | void clear_username_cache(void) FAST_FUNC; |
Denis Vlasenko | 2405ad6 | 2007-01-19 21:24:17 +0000 | [diff] [blame] | 874 | /* internally usernames are saved in fixed-sized char[] buffers */ |
Denys Vlasenko | 7d65abe | 2011-03-01 16:27:13 +0100 | [diff] [blame] | 875 | enum { USERNAME_MAX_SIZE = 32 - sizeof(uid_t) }; |
Denis Vlasenko | a7d6c8b | 2008-03-19 23:15:26 +0000 | [diff] [blame] | 876 | #if ENABLE_FEATURE_CHECK_NAMES |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 877 | void die_if_bad_username(const char* name) FAST_FUNC; |
Denis Vlasenko | a7d6c8b | 2008-03-19 23:15:26 +0000 | [diff] [blame] | 878 | #else |
| 879 | #define die_if_bad_username(name) ((void)(name)) |
| 880 | #endif |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 881 | |
Denys Vlasenko | 37f5bef | 2010-04-05 03:18:40 +0200 | [diff] [blame] | 882 | #if ENABLE_FEATURE_UTMP |
Denys Vlasenko | 3a41611 | 2010-04-05 22:10:38 +0200 | [diff] [blame] | 883 | void FAST_FUNC write_new_utmp(pid_t pid, int new_type, const char *tty_name, const char *username, const char *hostname); |
| 884 | void FAST_FUNC update_utmp(pid_t pid, int new_type, const char *tty_name, const char *username, const char *hostname); |
Denys Vlasenko | 37f5bef | 2010-04-05 03:18:40 +0200 | [diff] [blame] | 885 | #else |
Denys Vlasenko | 3a41611 | 2010-04-05 22:10:38 +0200 | [diff] [blame] | 886 | # define write_new_utmp(pid, new_type, tty_name, username, hostname) ((void)0) |
| 887 | # define update_utmp(pid, new_type, tty_name, username, hostname) ((void)0) |
Denys Vlasenko | 37f5bef | 2010-04-05 03:18:40 +0200 | [diff] [blame] | 888 | #endif |
| 889 | |
Denys Vlasenko | b72baeb | 2011-02-02 18:38:57 +0100 | [diff] [blame] | 890 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 891 | int execable_file(const char *name) FAST_FUNC; |
| 892 | char *find_execable(const char *filename, char **PATHp) FAST_FUNC; |
| 893 | int exists_execable(const char *filename) FAST_FUNC; |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 894 | |
Denis Vlasenko | 7e0fbf9 | 2007-09-04 19:33:22 +0000 | [diff] [blame] | 895 | /* BB_EXECxx always execs (it's not doing NOFORK/NOEXEC stuff), |
| 896 | * but it may exec busybox and call applet instead of searching PATH. |
| 897 | */ |
Denis Vlasenko | 80d14be | 2007-04-10 23:03:30 +0000 | [diff] [blame] | 898 | #if ENABLE_FEATURE_PREFER_APPLETS |
Denys Vlasenko | c71b469 | 2011-02-02 03:28:56 +0100 | [diff] [blame] | 899 | int BB_EXECVP(const char *file, char *const argv[]) FAST_FUNC; |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 900 | #define BB_EXECLP(prog,cmd,...) \ |
Denys Vlasenko | c71b469 | 2011-02-02 03:28:56 +0100 | [diff] [blame] | 901 | do { \ |
| 902 | if (find_applet_by_name(prog) >= 0) \ |
| 903 | execlp(bb_busybox_exec_path, cmd, __VA_ARGS__); \ |
| 904 | execlp(prog, cmd, __VA_ARGS__); \ |
| 905 | } while (0) |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 906 | #else |
| 907 | #define BB_EXECVP(prog,cmd) execvp(prog,cmd) |
Denys Vlasenko | c71b469 | 2011-02-02 03:28:56 +0100 | [diff] [blame] | 908 | #define BB_EXECLP(prog,cmd,...) execlp(prog,cmd,__VA_ARGS__) |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 909 | #endif |
Pascal Bellard | 21e8e8d | 2010-07-04 00:57:03 +0200 | [diff] [blame] | 910 | int BB_EXECVP_or_die(char **argv) NORETURN FAST_FUNC; |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 911 | |
Pascal Bellard | 926031b | 2010-07-04 15:32:38 +0200 | [diff] [blame] | 912 | /* xvfork() can't be a _function_, return after vfork mangles stack |
| 913 | * in the parent. It must be a macro. */ |
| 914 | #define xvfork() \ |
| 915 | ({ \ |
| 916 | pid_t bb__xvfork_pid = vfork(); \ |
| 917 | if (bb__xvfork_pid < 0) \ |
| 918 | bb_perror_msg_and_die("vfork"); \ |
| 919 | bb__xvfork_pid; \ |
| 920 | }) |
| 921 | #if BB_MMU |
| 922 | pid_t xfork(void) FAST_FUNC; |
| 923 | #endif |
| 924 | |
Denys Vlasenko | 8531d76 | 2010-03-18 22:44:00 +0100 | [diff] [blame] | 925 | /* NOMMU friendy fork+exec: */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 926 | pid_t spawn(char **argv) FAST_FUNC; |
| 927 | pid_t xspawn(char **argv) FAST_FUNC; |
Denis Vlasenko | cd7001f | 2007-04-09 21:32:30 +0000 | [diff] [blame] | 928 | |
Denis Vlasenko | 3854c5d | 2008-11-06 22:39:57 +0000 | [diff] [blame] | 929 | pid_t safe_waitpid(pid_t pid, int *wstat, int options) FAST_FUNC; |
Denys Vlasenko | 8531d76 | 2010-03-18 22:44:00 +0100 | [diff] [blame] | 930 | pid_t wait_any_nohang(int *wstat) FAST_FUNC; |
| 931 | /* wait4pid: unlike waitpid, waits ONLY for one process. |
| 932 | * Returns sig + 0x180 if child is killed by signal. |
Denis Vlasenko | cd7001f | 2007-04-09 21:32:30 +0000 | [diff] [blame] | 933 | * It's safe to pass negative 'pids' from failed [v]fork - |
Denis Vlasenko | 473dae0 | 2007-04-11 07:04:23 +0000 | [diff] [blame] | 934 | * wait4pid will return -1 (and will not clobber [v]fork's errno). |
Denis Vlasenko | cd7001f | 2007-04-09 21:32:30 +0000 | [diff] [blame] | 935 | * IOW: rc = wait4pid(spawn(argv)); |
| 936 | * if (rc < 0) bb_perror_msg("%s", argv[0]); |
Denys Vlasenko | 8531d76 | 2010-03-18 22:44:00 +0100 | [diff] [blame] | 937 | * if (rc > 0) bb_error_msg("exit code: %d", rc & 0xff); |
Denis Vlasenko | cd7001f | 2007-04-09 21:32:30 +0000 | [diff] [blame] | 938 | */ |
Denis Vlasenko | 3854c5d | 2008-11-06 22:39:57 +0000 | [diff] [blame] | 939 | int wait4pid(pid_t pid) FAST_FUNC; |
Denys Vlasenko | 8531d76 | 2010-03-18 22:44:00 +0100 | [diff] [blame] | 940 | /* Same as wait4pid(spawn(argv)), but with NOFORK/NOEXEC if configured: */ |
Denys Vlasenko | 8f24f98 | 2009-06-07 16:02:00 +0200 | [diff] [blame] | 941 | int spawn_and_wait(char **argv) FAST_FUNC; |
Denis Vlasenko | 18e19f2 | 2007-04-28 16:43:18 +0000 | [diff] [blame] | 942 | /* Does NOT check that applet is NOFORK, just blindly runs it */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 943 | int run_nofork_applet(int applet_no, char **argv) FAST_FUNC; |
Denis Vlasenko | cd7001f | 2007-04-09 21:32:30 +0000 | [diff] [blame] | 944 | |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 945 | /* Helpers for daemonization. |
Denis Vlasenko | 53091ec | 2007-03-26 13:35:09 +0000 | [diff] [blame] | 946 | * |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 947 | * bb_daemonize(flags) = daemonize, does not compile on NOMMU |
Denis Vlasenko | 53091ec | 2007-03-26 13:35:09 +0000 | [diff] [blame] | 948 | * |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 949 | * bb_daemonize_or_rexec(flags, argv) = daemonizes on MMU (and ignores argv), |
| 950 | * rexec's itself on NOMMU with argv passed as command line. |
| 951 | * Thus bb_daemonize_or_rexec may cause your <applet>_main() to be re-executed |
| 952 | * from the start. (It will detect it and not reexec again second time). |
| 953 | * You have to audit carefully that you don't do something twice as a result |
| 954 | * (opening files/sockets, parsing config files etc...)! |
| 955 | * |
| 956 | * Both of the above will redirect fd 0,1,2 to /dev/null and drop ctty |
| 957 | * (will do setsid()). |
| 958 | * |
Pascal Bellard | 926031b | 2010-07-04 15:32:38 +0200 | [diff] [blame] | 959 | * fork_or_rexec(argv) = bare-bones fork on MMU, |
Denis Vlasenko | 53091ec | 2007-03-26 13:35:09 +0000 | [diff] [blame] | 960 | * "vfork + re-exec ourself" on NOMMU. No fd redirection, no setsid(). |
Denis Vlasenko | 83518d1 | 2009-03-20 22:17:13 +0000 | [diff] [blame] | 961 | * On MMU ignores argv. |
Denis Vlasenko | 53091ec | 2007-03-26 13:35:09 +0000 | [diff] [blame] | 962 | * |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 963 | * Helper for network daemons in foreground mode: |
Denis Vlasenko | 53091ec | 2007-03-26 13:35:09 +0000 | [diff] [blame] | 964 | * |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 965 | * bb_sanitize_stdio() = make sure that fd 0,1,2 are opened by opening them |
| 966 | * to /dev/null if they are not. |
| 967 | */ |
| 968 | enum { |
| 969 | DAEMON_CHDIR_ROOT = 1, |
Denis Vlasenko | a1b16f4 | 2007-07-31 17:09:44 +0000 | [diff] [blame] | 970 | DAEMON_DEVNULL_STDIO = 2, |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 971 | DAEMON_CLOSE_EXTRA_FDS = 4, |
| 972 | DAEMON_ONLY_SANITIZE = 8, /* internal use */ |
| 973 | }; |
Denis Vlasenko | 473dae0 | 2007-04-11 07:04:23 +0000 | [diff] [blame] | 974 | #if BB_MMU |
Denis Vlasenko | 367960b | 2007-08-18 14:20:21 +0000 | [diff] [blame] | 975 | enum { re_execed = 0 }; |
Pascal Bellard | 926031b | 2010-07-04 15:32:38 +0200 | [diff] [blame] | 976 | # define fork_or_rexec(argv) xfork() |
Denis Vlasenko | 53091ec | 2007-03-26 13:35:09 +0000 | [diff] [blame] | 977 | # define bb_daemonize_or_rexec(flags, argv) bb_daemonize_or_rexec(flags) |
| 978 | # define bb_daemonize(flags) bb_daemonize_or_rexec(flags, bogus) |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 979 | #else |
Pascal Bellard | 926031b | 2010-07-04 15:32:38 +0200 | [diff] [blame] | 980 | extern bool re_execed; |
Denis Vlasenko | a60f84e | 2008-07-05 09:18:54 +0000 | [diff] [blame] | 981 | void re_exec(char **argv) NORETURN FAST_FUNC; |
Denis Vlasenko | 83518d1 | 2009-03-20 22:17:13 +0000 | [diff] [blame] | 982 | pid_t fork_or_rexec(char **argv) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 983 | int BUG_fork_is_unavailable_on_nommu(void) FAST_FUNC; |
| 984 | int BUG_daemon_is_unavailable_on_nommu(void) FAST_FUNC; |
| 985 | void BUG_bb_daemonize_is_unavailable_on_nommu(void) FAST_FUNC; |
Denis Vlasenko | 53091ec | 2007-03-26 13:35:09 +0000 | [diff] [blame] | 986 | # define fork() BUG_fork_is_unavailable_on_nommu() |
Pascal Bellard | 926031b | 2010-07-04 15:32:38 +0200 | [diff] [blame] | 987 | # define xfork() BUG_fork_is_unavailable_on_nommu() |
Denis Vlasenko | 53091ec | 2007-03-26 13:35:09 +0000 | [diff] [blame] | 988 | # define daemon(a,b) BUG_daemon_is_unavailable_on_nommu() |
| 989 | # define bb_daemonize(a) BUG_bb_daemonize_is_unavailable_on_nommu() |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 990 | #endif |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 991 | void bb_daemonize_or_rexec(int flags, char **argv) FAST_FUNC; |
| 992 | void bb_sanitize_stdio(void) FAST_FUNC; |
Denis Vlasenko | c9ca0a3 | 2008-02-18 11:08:33 +0000 | [diff] [blame] | 993 | /* Clear dangerous stuff, set PATH. Return 1 if was run by different user. */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 994 | int sanitize_env_if_suid(void) FAST_FUNC; |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 995 | |
| 996 | |
Denys Vlasenko | e992bae | 2009-11-28 15:18:53 +0100 | [diff] [blame] | 997 | char* single_argv(char **argv) FAST_FUNC; |
Denis Vlasenko | 62a90cd | 2008-03-17 09:07:36 +0000 | [diff] [blame] | 998 | extern const char *const bb_argv_dash[]; /* "-", NULL */ |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 999 | extern const char *opt_complementary; |
Denys Vlasenko | f3b92d3 | 2009-06-19 12:10:38 +0200 | [diff] [blame] | 1000 | #if ENABLE_LONG_OPTS || ENABLE_FEATURE_GETOPT_LONG |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 1001 | #define No_argument "\0" |
| 1002 | #define Required_argument "\001" |
| 1003 | #define Optional_argument "\002" |
| 1004 | extern const char *applet_long_options; |
Denis Vlasenko | c61852a | 2006-11-29 11:09:43 +0000 | [diff] [blame] | 1005 | #endif |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1006 | extern uint32_t option_mask32; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1007 | extern uint32_t getopt32(char **argv, const char *applet_opts, ...) FAST_FUNC; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1008 | |
| 1009 | |
Denys Vlasenko | 9be4702 | 2011-05-16 12:21:31 +0200 | [diff] [blame] | 1010 | /* Having next pointer as a first member allows easy creation |
| 1011 | * of "llist-compatible" structs, and using llist_FOO functions |
| 1012 | * on them. |
| 1013 | */ |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 1014 | typedef struct llist_t { |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 1015 | struct llist_t *link; |
Denys Vlasenko | 9be4702 | 2011-05-16 12:21:31 +0200 | [diff] [blame] | 1016 | char *data; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1017 | } llist_t; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1018 | void llist_add_to(llist_t **old_head, void *data) FAST_FUNC; |
| 1019 | void llist_add_to_end(llist_t **list_head, void *data) FAST_FUNC; |
| 1020 | void *llist_pop(llist_t **elm) FAST_FUNC; |
| 1021 | void llist_unlink(llist_t **head, llist_t *elm) FAST_FUNC; |
| 1022 | void llist_free(llist_t *elm, void (*freeit)(void *data)) FAST_FUNC; |
| 1023 | llist_t *llist_rev(llist_t *list) FAST_FUNC; |
Denis Vlasenko | 0b791d9 | 2009-04-13 20:52:00 +0000 | [diff] [blame] | 1024 | llist_t *llist_find_str(llist_t *first, const char *str) FAST_FUNC; |
Denis Vlasenko | 4b924f3 | 2007-05-30 00:29:55 +0000 | [diff] [blame] | 1025 | /* BTW, surprisingly, changing API to |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 1026 | * llist_t *llist_add_to(llist_t *old_head, void *data) |
| 1027 | * etc does not result in smaller code... */ |
| 1028 | |
Denis Vlasenko | 80edead | 2007-08-02 22:31:05 +0000 | [diff] [blame] | 1029 | /* start_stop_daemon and udhcpc are special - they want |
| 1030 | * to create pidfiles regardless of FEATURE_PIDFILE */ |
Denis Vlasenko | 1caca34 | 2007-08-02 10:14:29 +0000 | [diff] [blame] | 1031 | #if ENABLE_FEATURE_PIDFILE || defined(WANT_PIDFILE) |
Denis Vlasenko | bb23c06 | 2007-08-15 20:05:37 +0000 | [diff] [blame] | 1032 | /* True only if we created pidfile which is *file*, not /dev/null etc */ |
| 1033 | extern smallint wrote_pidfile; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1034 | void write_pidfile(const char *path) FAST_FUNC; |
Denis Vlasenko | bb23c06 | 2007-08-15 20:05:37 +0000 | [diff] [blame] | 1035 | #define remove_pidfile(path) do { if (wrote_pidfile) unlink(path); } while (0) |
Denis Vlasenko | 10457b9 | 2007-03-27 22:01:31 +0000 | [diff] [blame] | 1036 | #else |
Denis Vlasenko | bb23c06 | 2007-08-15 20:05:37 +0000 | [diff] [blame] | 1037 | enum { wrote_pidfile = 0 }; |
| 1038 | #define write_pidfile(path) ((void)0) |
| 1039 | #define remove_pidfile(path) ((void)0) |
Denis Vlasenko | 10457b9 | 2007-03-27 22:01:31 +0000 | [diff] [blame] | 1040 | #endif |
| 1041 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1042 | enum { |
| 1043 | LOGMODE_NONE = 0, |
Denis Vlasenko | 1b97efd | 2007-08-17 19:18:06 +0000 | [diff] [blame] | 1044 | LOGMODE_STDIO = (1 << 0), |
| 1045 | LOGMODE_SYSLOG = (1 << 1) * ENABLE_FEATURE_SYSLOG, |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1046 | LOGMODE_BOTH = LOGMODE_SYSLOG + LOGMODE_STDIO, |
| 1047 | }; |
| 1048 | extern const char *msg_eol; |
Denis Vlasenko | 04c99eb | 2007-04-07 00:44:31 +0000 | [diff] [blame] | 1049 | extern smallint logmode; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1050 | extern int die_sleep; |
Denys Vlasenko | 7aa6304 | 2010-09-01 16:04:24 +0200 | [diff] [blame] | 1051 | extern uint8_t xfunc_error_retval; |
Denis Vlasenko | 3f3aa2a | 2007-04-09 21:35:07 +0000 | [diff] [blame] | 1052 | extern jmp_buf die_jmp; |
Denis Vlasenko | a60f84e | 2008-07-05 09:18:54 +0000 | [diff] [blame] | 1053 | extern void xfunc_die(void) NORETURN FAST_FUNC; |
| 1054 | extern void bb_show_usage(void) NORETURN FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1055 | extern void bb_error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; |
| 1056 | extern void bb_error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC; |
| 1057 | extern void bb_perror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; |
| 1058 | extern void bb_simple_perror_msg(const char *s) FAST_FUNC; |
| 1059 | extern void bb_perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC; |
Denis Vlasenko | fb1a23d | 2009-03-07 01:54:24 +0000 | [diff] [blame] | 1060 | extern void bb_simple_perror_msg_and_die(const char *s) NORETURN FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1061 | extern void bb_herror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; |
| 1062 | extern void bb_herror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC; |
Denis Vlasenko | a60f84e | 2008-07-05 09:18:54 +0000 | [diff] [blame] | 1063 | extern void bb_perror_nomsg_and_die(void) NORETURN FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1064 | extern void bb_perror_nomsg(void) FAST_FUNC; |
| 1065 | extern void bb_info_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; |
| 1066 | extern void bb_verror_msg(const char *s, va_list p, const char *strerr) FAST_FUNC; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1067 | |
Denis Vlasenko | 9b49a5e | 2007-10-11 10:05:36 +0000 | [diff] [blame] | 1068 | /* We need to export XXX_main from libbusybox |
| 1069 | * only if we build "individual" binaries |
| 1070 | */ |
| 1071 | #if ENABLE_FEATURE_INDIVIDUAL |
| 1072 | #define MAIN_EXTERNALLY_VISIBLE EXTERNALLY_VISIBLE |
| 1073 | #else |
| 1074 | #define MAIN_EXTERNALLY_VISIBLE |
| 1075 | #endif |
| 1076 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1077 | |
Denis Vlasenko | cd2663f | 2008-06-01 22:36:39 +0000 | [diff] [blame] | 1078 | /* Applets which are useful from another applets */ |
Denis Vlasenko | 06af216 | 2007-02-03 17:28:39 +0000 | [diff] [blame] | 1079 | int bb_cat(char** argv); |
Denis Vlasenko | cd2663f | 2008-06-01 22:36:39 +0000 | [diff] [blame] | 1080 | /* If shell needs them, they exist even if not enabled as applets */ |
Denis Vlasenko | 5e34ff2 | 2009-04-21 11:09:40 +0000 | [diff] [blame] | 1081 | int echo_main(int argc, char** argv) IF_ECHO(MAIN_EXTERNALLY_VISIBLE); |
| 1082 | int printf_main(int argc, char **argv) IF_PRINTF(MAIN_EXTERNALLY_VISIBLE); |
| 1083 | int test_main(int argc, char **argv) IF_TEST(MAIN_EXTERNALLY_VISIBLE); |
| 1084 | int kill_main(int argc, char **argv) IF_KILL(MAIN_EXTERNALLY_VISIBLE); |
Denis Vlasenko | cd2663f | 2008-06-01 22:36:39 +0000 | [diff] [blame] | 1085 | /* Similar, but used by chgrp, not shell */ |
Denis Vlasenko | 5e34ff2 | 2009-04-21 11:09:40 +0000 | [diff] [blame] | 1086 | int chown_main(int argc, char **argv) IF_CHOWN(MAIN_EXTERNALLY_VISIBLE); |
Denis Vlasenko | c41cba5 | 2009-03-09 15:46:07 +0000 | [diff] [blame] | 1087 | /* Used by ftpd */ |
Denis Vlasenko | 5e34ff2 | 2009-04-21 11:09:40 +0000 | [diff] [blame] | 1088 | int ls_main(int argc, char **argv) IF_LS(MAIN_EXTERNALLY_VISIBLE); |
| 1089 | /* Don't need IF_xxx() guard for these */ |
Denis Vlasenko | 9b49a5e | 2007-10-11 10:05:36 +0000 | [diff] [blame] | 1090 | int gunzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
Denis Vlasenko | 77f1ec1 | 2007-10-13 03:36:03 +0000 | [diff] [blame] | 1091 | int bunzip2_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
Denis Vlasenko | 1a9e9bd | 2008-11-01 12:54:56 +0000 | [diff] [blame] | 1092 | |
Denis Vlasenko | 468aea2 | 2008-04-01 14:47:57 +0000 | [diff] [blame] | 1093 | #if ENABLE_ROUTE |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1094 | void bb_displayroutes(int noresolve, int netstatfmt) FAST_FUNC; |
Denis Vlasenko | 468aea2 | 2008-04-01 14:47:57 +0000 | [diff] [blame] | 1095 | #endif |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1096 | |
Denis Vlasenko | 270c17c | 2006-12-26 17:40:33 +0000 | [diff] [blame] | 1097 | |
| 1098 | /* Networking */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1099 | int create_icmp_socket(void) FAST_FUNC; |
| 1100 | int create_icmp6_socket(void) FAST_FUNC; |
Denis Vlasenko | 270c17c | 2006-12-26 17:40:33 +0000 | [diff] [blame] | 1101 | /* interface.c */ |
Denis Vlasenko | f5294e1 | 2007-04-14 10:09:57 +0000 | [diff] [blame] | 1102 | /* This structure defines protocol families and their handlers. */ |
| 1103 | struct aftype { |
| 1104 | const char *name; |
| 1105 | const char *title; |
| 1106 | int af; |
| 1107 | int alen; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1108 | char* FAST_FUNC (*print)(unsigned char *); |
| 1109 | const char* FAST_FUNC (*sprint)(struct sockaddr *, int numeric); |
| 1110 | int FAST_FUNC (*input)(/*int type,*/ const char *bufp, struct sockaddr *); |
| 1111 | void FAST_FUNC (*herror)(char *text); |
| 1112 | int FAST_FUNC (*rprint)(int options); |
| 1113 | int FAST_FUNC (*rinput)(int typ, int ext, char **argv); |
Denis Vlasenko | f5294e1 | 2007-04-14 10:09:57 +0000 | [diff] [blame] | 1114 | /* may modify src */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1115 | int FAST_FUNC (*getmask)(char *src, struct sockaddr *mask, char *name); |
Denis Vlasenko | f5294e1 | 2007-04-14 10:09:57 +0000 | [diff] [blame] | 1116 | }; |
| 1117 | /* This structure defines hardware protocols and their handlers. */ |
| 1118 | struct hwtype { |
| 1119 | const char *name; |
| 1120 | const char *title; |
| 1121 | int type; |
| 1122 | int alen; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1123 | char* FAST_FUNC (*print)(unsigned char *); |
| 1124 | int FAST_FUNC (*input)(const char *, struct sockaddr *); |
| 1125 | int FAST_FUNC (*activate)(int fd); |
Denis Vlasenko | f5294e1 | 2007-04-14 10:09:57 +0000 | [diff] [blame] | 1126 | int suppress_null_addr; |
| 1127 | }; |
Denis Vlasenko | 1b16bda | 2007-06-19 11:10:02 +0000 | [diff] [blame] | 1128 | extern smallint interface_opt_a; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1129 | int display_interfaces(char *ifname) FAST_FUNC; |
Bernhard Reutner-Fischer | f3b778a | 2008-05-16 16:10:31 +0000 | [diff] [blame] | 1130 | #if ENABLE_FEATURE_HWIB |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1131 | int in_ib(const char *bufp, struct sockaddr *sap) FAST_FUNC; |
Denis Vlasenko | 3b162ec | 2008-06-04 07:59:51 +0000 | [diff] [blame] | 1132 | #else |
| 1133 | #define in_ib(a, b) 1 /* fail */ |
Bernhard Reutner-Fischer | f3b778a | 2008-05-16 16:10:31 +0000 | [diff] [blame] | 1134 | #endif |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1135 | const struct aftype *get_aftype(const char *name) FAST_FUNC; |
| 1136 | const struct hwtype *get_hwtype(const char *name) FAST_FUNC; |
| 1137 | const struct hwtype *get_hwntype(int type) FAST_FUNC; |
Denis Vlasenko | 270c17c | 2006-12-26 17:40:33 +0000 | [diff] [blame] | 1138 | |
| 1139 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1140 | #ifndef BUILD_INDIVIDUAL |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1141 | extern int find_applet_by_name(const char *name) FAST_FUNC; |
Denis Vlasenko | 32b633a | 2007-04-09 03:05:48 +0000 | [diff] [blame] | 1142 | /* Returns only if applet is not found. */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1143 | extern void run_applet_and_exit(const char *name, char **argv) FAST_FUNC; |
Denis Vlasenko | a60f84e | 2008-07-05 09:18:54 +0000 | [diff] [blame] | 1144 | extern void run_applet_no_and_exit(int a, char **argv) NORETURN FAST_FUNC; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1145 | #endif |
| 1146 | |
Mike Frysinger | 9412ec7 | 2008-02-07 22:41:33 +0000 | [diff] [blame] | 1147 | #ifdef HAVE_MNTENT_H |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1148 | extern int match_fstype(const struct mntent *mt, const char *fstypes) FAST_FUNC; |
Denys Vlasenko | 6ae6426 | 2009-07-18 16:22:26 +0200 | [diff] [blame] | 1149 | extern struct mntent *find_mount_point(const char *name, int subdir_too) FAST_FUNC; |
Mike Frysinger | 9412ec7 | 2008-02-07 22:41:33 +0000 | [diff] [blame] | 1150 | #endif |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1151 | extern void erase_mtab(const char * name) FAST_FUNC; |
| 1152 | extern unsigned int tty_baud_to_value(speed_t speed) FAST_FUNC; |
| 1153 | extern speed_t tty_value_to_baud(unsigned int value) FAST_FUNC; |
Denys Vlasenko | a355da0 | 2010-01-04 13:16:08 +0100 | [diff] [blame] | 1154 | #if ENABLE_DESKTOP |
| 1155 | extern void bb_warn_ignoring_args(char *arg) FAST_FUNC; |
| 1156 | #else |
| 1157 | # define bb_warn_ignoring_args(arg) ((void)0) |
| 1158 | #endif |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1159 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1160 | extern int get_linux_version_code(void) FAST_FUNC; |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 1161 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1162 | extern char *query_loop(const char *device) FAST_FUNC; |
| 1163 | extern int del_loop(const char *device) FAST_FUNC; |
Denis Vlasenko | 0e2c9fb | 2007-08-03 14:16:24 +0000 | [diff] [blame] | 1164 | /* If *devname is not NULL, use that name, otherwise try to find free one, |
| 1165 | * malloc and return it in *devname. |
| 1166 | * return value: 1: read-only loopdev was setup, 0: rw, < 0: error */ |
Denys Vlasenko | 13e709c | 2011-09-12 02:13:47 +0200 | [diff] [blame^] | 1167 | extern int set_loop(char **devname, const char *file, unsigned long long offset, int ro) FAST_FUNC; |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 1168 | |
Bernhard Reutner-Fischer | 82b1429 | 2008-12-03 18:48:39 +0000 | [diff] [blame] | 1169 | /* Like bb_ask below, but asks on stdin with no timeout. */ |
| 1170 | char *bb_ask_stdin(const char * prompt) FAST_FUNC; |
Denis Vlasenko | 6ef06ee | 2007-03-14 22:06:01 +0000 | [diff] [blame] | 1171 | //TODO: pass buf pointer or return allocated buf (avoid statics)? |
Bernhard Reutner-Fischer | 82b1429 | 2008-12-03 18:48:39 +0000 | [diff] [blame] | 1172 | char *bb_ask(const int fd, int timeout, const char * prompt) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1173 | int bb_ask_confirmation(void) FAST_FUNC; |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 1174 | |
Denis Vlasenko | c01340f | 2008-07-16 22:12:18 +0000 | [diff] [blame] | 1175 | int bb_parse_mode(const char* s, mode_t* theMode) FAST_FUNC; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1176 | |
Denis Vlasenko | e559e0a | 2008-07-15 21:09:30 +0000 | [diff] [blame] | 1177 | /* |
Denis Vlasenko | 2e157dd | 2008-07-19 09:27:19 +0000 | [diff] [blame] | 1178 | * Config file parser |
Denis Vlasenko | e559e0a | 2008-07-15 21:09:30 +0000 | [diff] [blame] | 1179 | */ |
Denis Vlasenko | dcb3fcb | 2008-07-19 22:57:00 +0000 | [diff] [blame] | 1180 | enum { |
Denis Vlasenko | 084266e | 2008-07-26 23:08:31 +0000 | [diff] [blame] | 1181 | PARSE_COLLAPSE = 0x00010000, // treat consecutive delimiters as one |
| 1182 | PARSE_TRIM = 0x00020000, // trim leading and trailing delimiters |
| 1183 | // TODO: COLLAPSE and TRIM seem to always go in pair |
| 1184 | PARSE_GREEDY = 0x00040000, // last token takes entire remainder of the line |
| 1185 | PARSE_MIN_DIE = 0x00100000, // die if < min tokens found |
Denis Vlasenko | dcb3fcb | 2008-07-19 22:57:00 +0000 | [diff] [blame] | 1186 | // keep a copy of current line |
Denis Vlasenko | 35a064b | 2008-11-06 00:49:59 +0000 | [diff] [blame] | 1187 | PARSE_KEEP_COPY = 0x00200000 * ENABLE_FEATURE_CROND_D, |
Denis Vlasenko | 084266e | 2008-07-26 23:08:31 +0000 | [diff] [blame] | 1188 | // PARSE_ESCAPE = 0x00400000, // process escape sequences in tokens |
| 1189 | // NORMAL is: |
| 1190 | // * remove leading and trailing delimiters and collapse |
| 1191 | // multiple delimiters into one |
| 1192 | // * warn and continue if less than mintokens delimiters found |
| 1193 | // * grab everything into last token |
| 1194 | PARSE_NORMAL = PARSE_COLLAPSE | PARSE_TRIM | PARSE_GREEDY, |
Denis Vlasenko | dcb3fcb | 2008-07-19 22:57:00 +0000 | [diff] [blame] | 1195 | }; |
Denis Vlasenko | e559e0a | 2008-07-15 21:09:30 +0000 | [diff] [blame] | 1196 | typedef struct parser_t { |
| 1197 | FILE *fp; |
Denis Vlasenko | dcb3fcb | 2008-07-19 22:57:00 +0000 | [diff] [blame] | 1198 | char *data; |
Timo Teras | adcabf3 | 2011-06-20 09:49:56 +0200 | [diff] [blame] | 1199 | char *line, *nline; |
| 1200 | size_t line_alloc, nline_alloc; |
Denis Vlasenko | e559e0a | 2008-07-15 21:09:30 +0000 | [diff] [blame] | 1201 | int lineno; |
| 1202 | } parser_t; |
Bernhard Reutner-Fischer | 6792128 | 2008-07-17 11:59:13 +0000 | [diff] [blame] | 1203 | parser_t* config_open(const char *filename) FAST_FUNC; |
Denis Vlasenko | 5415c85 | 2008-07-21 23:05:26 +0000 | [diff] [blame] | 1204 | parser_t* config_open2(const char *filename, FILE* FAST_FUNC (*fopen_func)(const char *path)) FAST_FUNC; |
Denys Vlasenko | adbbee4 | 2010-06-21 07:17:23 +0200 | [diff] [blame] | 1205 | /* delims[0] is a comment char (use '\0' to disable), the rest are token delimiters */ |
Denis Vlasenko | 2e157dd | 2008-07-19 09:27:19 +0000 | [diff] [blame] | 1206 | int config_read(parser_t *parser, char **tokens, unsigned flags, const char *delims) FAST_FUNC; |
| 1207 | #define config_read(parser, tokens, max, min, str, flags) \ |
| 1208 | config_read(parser, tokens, ((flags) | (((min) & 0xFF) << 8) | ((max) & 0xFF)), str) |
Denis Vlasenko | c01340f | 2008-07-16 22:12:18 +0000 | [diff] [blame] | 1209 | void config_close(parser_t *parser) FAST_FUNC; |
Denis Vlasenko | e559e0a | 2008-07-15 21:09:30 +0000 | [diff] [blame] | 1210 | |
Denis Vlasenko | 6bf05cf | 2008-05-07 12:18:48 +0000 | [diff] [blame] | 1211 | /* Concatenate path and filename to new allocated buffer. |
| 1212 | * Add "/" only as needed (no duplicate "//" are produced). |
| 1213 | * If path is NULL, it is assumed to be "/". |
| 1214 | * filename should not be NULL. */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1215 | char *concat_path_file(const char *path, const char *filename) FAST_FUNC; |
Denys Vlasenko | e6df7e2 | 2011-05-23 03:39:08 +0200 | [diff] [blame] | 1216 | /* Returns NULL on . and .. */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1217 | char *concat_subpath_file(const char *path, const char *filename) FAST_FUNC; |
Eric Andersen | e5dfced | 2001-04-09 22:48:12 +0000 | [diff] [blame] | 1218 | |
Denis Vlasenko | 4921b54 | 2007-02-03 02:17:41 +0000 | [diff] [blame] | 1219 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1220 | int bb_make_directory(char *path, long mode, int flags) FAST_FUNC; |
Matt Kraai | ceeff73 | 2001-06-21 19:41:37 +0000 | [diff] [blame] | 1221 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1222 | int get_signum(const char *name) FAST_FUNC; |
| 1223 | const char *get_signame(int number) FAST_FUNC; |
| 1224 | void print_signames(void) FAST_FUNC; |
Rob Landley | c9c1a41 | 2006-07-12 19:17:55 +0000 | [diff] [blame] | 1225 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1226 | char *bb_simplify_path(const char *path) FAST_FUNC; |
Denis Vlasenko | 1cf4a0e | 2009-04-22 13:49:16 +0000 | [diff] [blame] | 1227 | /* Returns ptr to NUL */ |
| 1228 | char *bb_simplify_abs_path_inplace(char *path) FAST_FUNC; |
Eric Andersen | 3450636 | 2001-08-02 05:02:46 +0000 | [diff] [blame] | 1229 | |
Denys Vlasenko | 681efe2 | 2011-03-08 21:00:36 +0100 | [diff] [blame] | 1230 | #define LOGIN_FAIL_DELAY 3 |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1231 | extern void bb_do_delay(int seconds) FAST_FUNC; |
| 1232 | extern void change_identity(const struct passwd *pw) FAST_FUNC; |
Denis Vlasenko | a60f84e | 2008-07-05 09:18:54 +0000 | [diff] [blame] | 1233 | extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args) NORETURN FAST_FUNC; |
Denys Vlasenko | 681efe2 | 2011-03-08 21:00:36 +0100 | [diff] [blame] | 1234 | |
| 1235 | /* Returns $SHELL, getpwuid(getuid())->pw_shell, or DEFAULT_SHELL. |
| 1236 | * Note that getpwuid result might need xstrdup'ing |
| 1237 | * if there is a possibility of intervening getpwxxx() calls. |
| 1238 | */ |
| 1239 | const char *get_shell_name(void); |
| 1240 | |
Denis Vlasenko | b5a122b | 2006-12-30 14:46:51 +0000 | [diff] [blame] | 1241 | #if ENABLE_SELINUX |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1242 | extern void renew_current_security_context(void) FAST_FUNC; |
| 1243 | extern void set_current_security_context(security_context_t sid) FAST_FUNC; |
Denis Vlasenko | 1203c9b | 2007-03-11 22:16:02 +0000 | [diff] [blame] | 1244 | extern context_t set_security_context_component(security_context_t cur_context, |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1245 | char *user, char *role, char *type, char *range) FAST_FUNC; |
| 1246 | extern void setfscreatecon_or_die(security_context_t scontext) FAST_FUNC; |
| 1247 | extern void selinux_preserve_fcontext(int fdesc) FAST_FUNC; |
Denis Vlasenko | 2edbc2a | 2007-10-20 02:00:49 +0000 | [diff] [blame] | 1248 | #else |
| 1249 | #define selinux_preserve_fcontext(fdesc) ((void)0) |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1250 | #endif |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1251 | extern void selinux_or_die(void) FAST_FUNC; |
Denis Vlasenko | a2f6101 | 2007-09-10 13:15:28 +0000 | [diff] [blame] | 1252 | |
Davide Cavalca | 9b3b979 | 2011-01-25 02:26:03 +0100 | [diff] [blame] | 1253 | |
| 1254 | /* systemd support */ |
| 1255 | #define SD_LISTEN_FDS_START 3 |
| 1256 | int sd_listen_fds(void); |
| 1257 | |
| 1258 | |
Denis Vlasenko | a2f6101 | 2007-09-10 13:15:28 +0000 | [diff] [blame] | 1259 | /* setup_environment: |
Bernhard Reutner-Fischer | 99709ab | 2010-02-24 16:10:09 +0100 | [diff] [blame] | 1260 | * if chdir pw->pw_dir: ok: else if to_tmp == 1: goto /tmp else: goto / or die |
Denis Vlasenko | cdf6277 | 2008-03-17 08:42:43 +0000 | [diff] [blame] | 1261 | * if clear_env = 1: cd(pw->pw_dir), clear environment, then set |
Denis Vlasenko | a2f6101 | 2007-09-10 13:15:28 +0000 | [diff] [blame] | 1262 | * TERM=(old value) |
| 1263 | * USER=pw->pw_name, LOGNAME=pw->pw_name |
| 1264 | * PATH=bb_default_[root_]path |
| 1265 | * HOME=pw->pw_dir |
| 1266 | * SHELL=shell |
Denis Vlasenko | cdf6277 | 2008-03-17 08:42:43 +0000 | [diff] [blame] | 1267 | * else if change_env = 1: |
Denis Vlasenko | a2f6101 | 2007-09-10 13:15:28 +0000 | [diff] [blame] | 1268 | * if not root (if pw->pw_uid != 0): |
| 1269 | * USER=pw->pw_name, LOGNAME=pw->pw_name |
| 1270 | * HOME=pw->pw_dir |
| 1271 | * SHELL=shell |
| 1272 | * else does nothing |
| 1273 | */ |
Denys Vlasenko | fd686a2 | 2010-02-26 09:52:45 +0100 | [diff] [blame] | 1274 | #define SETUP_ENV_CHANGEENV (1 << 0) |
| 1275 | #define SETUP_ENV_CLEARENV (1 << 1) |
| 1276 | #define SETUP_ENV_TO_TMP (1 << 2) |
| 1277 | extern void setup_environment(const char *shell, int flags, const struct passwd *pw) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1278 | extern int correct_password(const struct passwd *pw) FAST_FUNC; |
Denis Vlasenko | fdddab0 | 2008-06-12 16:56:52 +0000 | [diff] [blame] | 1279 | /* Returns a malloced string */ |
Denis Vlasenko | b4c5bf6 | 2008-06-15 18:35:34 +0000 | [diff] [blame] | 1280 | #if !ENABLE_USE_BB_CRYPT |
| 1281 | #define pw_encrypt(clear, salt, cleanup) pw_encrypt(clear, salt) |
| 1282 | #endif |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1283 | extern char *pw_encrypt(const char *clear, const char *salt, int cleanup) FAST_FUNC; |
| 1284 | extern int obscure(const char *old, const char *newval, const struct passwd *pwdp) FAST_FUNC; |
Denys Vlasenko | 12a4327 | 2011-05-13 03:19:01 +0200 | [diff] [blame] | 1285 | /* |
| 1286 | * rnd is additional random input. New one is returned. |
Denis Vlasenko | 4ea83bf | 2008-06-12 16:55:59 +0000 | [diff] [blame] | 1287 | * Useful if you call crypt_make_salt many times in a row: |
| 1288 | * rnd = crypt_make_salt(buf1, 4, 0); |
| 1289 | * rnd = crypt_make_salt(buf2, 4, rnd); |
| 1290 | * rnd = crypt_make_salt(buf3, 4, rnd); |
| 1291 | * (otherwise we risk having same salt generated) |
| 1292 | */ |
Denys Vlasenko | 12a4327 | 2011-05-13 03:19:01 +0200 | [diff] [blame] | 1293 | extern int crypt_make_salt(char *p, int cnt /*, int rnd*/) FAST_FUNC; |
| 1294 | /* "$N$" + sha_salt_16_bytes + NUL */ |
| 1295 | #define MAX_PW_SALT_LEN (3 + 16 + 1) |
| 1296 | extern char* crypt_make_pw_salt(char p[MAX_PW_SALT_LEN], const char *algo) FAST_FUNC; |
| 1297 | |
Denis Vlasenko | 829bbd3 | 2009-04-14 00:51:05 +0000 | [diff] [blame] | 1298 | |
Denis Vlasenko | 4ea83bf | 2008-06-12 16:55:59 +0000 | [diff] [blame] | 1299 | /* Returns number of lines changed, or -1 on error */ |
Denis Vlasenko | 829bbd3 | 2009-04-14 00:51:05 +0000 | [diff] [blame] | 1300 | #if !(ENABLE_FEATURE_ADDUSER_TO_GROUP || ENABLE_FEATURE_DEL_USER_FROM_GROUP) |
| 1301 | #define update_passwd(filename, username, data, member) \ |
| 1302 | update_passwd(filename, username, data) |
| 1303 | #endif |
| 1304 | extern int update_passwd(const char *filename, |
| 1305 | const char *username, |
| 1306 | const char *data, |
| 1307 | const char *member) FAST_FUNC; |
Denis Vlasenko | bfc3d82 | 2007-11-04 04:10:17 +0000 | [diff] [blame] | 1308 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1309 | int index_in_str_array(const char *const string_array[], const char *key) FAST_FUNC; |
| 1310 | int index_in_strings(const char *strings, const char *key) FAST_FUNC; |
| 1311 | int index_in_substr_array(const char *const string_array[], const char *key) FAST_FUNC; |
| 1312 | int index_in_substrings(const char *strings, const char *key) FAST_FUNC; |
| 1313 | const char *nth_string(const char *strings, int n) FAST_FUNC; |
Denis Vlasenko | bfc3d82 | 2007-11-04 04:10:17 +0000 | [diff] [blame] | 1314 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1315 | extern void print_login_issue(const char *issue_file, const char *tty) FAST_FUNC; |
| 1316 | extern void print_login_prompt(void) FAST_FUNC; |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 1317 | |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 1318 | char *xmalloc_ttyname(int fd) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | f893da8 | 2007-08-09 08:27:24 +0000 | [diff] [blame] | 1319 | /* NB: typically you want to pass fd 0, not 1. Think 'applet | grep something' */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1320 | int get_terminal_width_height(int fd, unsigned *width, unsigned *height) FAST_FUNC; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1321 | |
Denis Vlasenko | 202ac50 | 2008-11-05 13:20:58 +0000 | [diff] [blame] | 1322 | int tcsetattr_stdin_TCSANOW(const struct termios *tp) FAST_FUNC; |
| 1323 | |
Denis Vlasenko | 5bb2fc2 | 2008-04-21 03:23:59 +0000 | [diff] [blame] | 1324 | /* NB: "unsigned request" is crucial! "int request" will break some arches! */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1325 | int ioctl_or_perror(int fd, unsigned request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5))) FAST_FUNC; |
| 1326 | int ioctl_or_perror_and_die(int fd, unsigned request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5))) FAST_FUNC; |
Denis Vlasenko | fb79a2e | 2007-07-14 22:07:14 +0000 | [diff] [blame] | 1327 | #if ENABLE_IOCTL_HEX2STR_ERROR |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1328 | int bb_ioctl_or_warn(int fd, unsigned request, void *argp, const char *ioctl_name) FAST_FUNC; |
| 1329 | int bb_xioctl(int fd, unsigned request, void *argp, const char *ioctl_name) FAST_FUNC; |
Denis Vlasenko | fb79a2e | 2007-07-14 22:07:14 +0000 | [diff] [blame] | 1330 | #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp,#request) |
| 1331 | #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp,#request) |
| 1332 | #else |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1333 | int bb_ioctl_or_warn(int fd, unsigned request, void *argp) FAST_FUNC; |
| 1334 | int bb_xioctl(int fd, unsigned request, void *argp) FAST_FUNC; |
Denis Vlasenko | fb79a2e | 2007-07-14 22:07:14 +0000 | [diff] [blame] | 1335 | #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp) |
| 1336 | #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp) |
| 1337 | #endif |
| 1338 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1339 | char *is_in_ino_dev_hashtable(const struct stat *statbuf) FAST_FUNC; |
| 1340 | void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name) FAST_FUNC; |
| 1341 | void reset_ino_dev_hashtable(void) FAST_FUNC; |
Denis Vlasenko | 0b35470 | 2006-11-24 14:54:27 +0000 | [diff] [blame] | 1342 | #ifdef __GLIBC__ |
| 1343 | /* At least glibc has horrendously large inline for this, so wrap it */ |
Denys Vlasenko | 975c714 | 2011-01-24 23:53:12 +0100 | [diff] [blame] | 1344 | unsigned long long bb_makedev(unsigned major, unsigned minor) FAST_FUNC; |
Denis Vlasenko | 0b35470 | 2006-11-24 14:54:27 +0000 | [diff] [blame] | 1345 | #undef makedev |
| 1346 | #define makedev(a,b) bb_makedev(a,b) |
| 1347 | #endif |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1348 | |
| 1349 | |
Denys Vlasenko | 4b7db4f | 2009-05-29 10:39:06 +0200 | [diff] [blame] | 1350 | /* "Keycodes" that report an escape sequence. |
| 1351 | * We use something which fits into signed char, |
Denys Vlasenko | 5370bfb | 2009-09-06 02:58:59 +0200 | [diff] [blame] | 1352 | * yet doesn't represent any valid Unicode character. |
Denys Vlasenko | 4b7db4f | 2009-05-29 10:39:06 +0200 | [diff] [blame] | 1353 | * Also, -1 is reserved for error indication and we don't use it. */ |
| 1354 | enum { |
| 1355 | KEYCODE_UP = -2, |
| 1356 | KEYCODE_DOWN = -3, |
| 1357 | KEYCODE_RIGHT = -4, |
| 1358 | KEYCODE_LEFT = -5, |
| 1359 | KEYCODE_HOME = -6, |
| 1360 | KEYCODE_END = -7, |
| 1361 | KEYCODE_INSERT = -8, |
| 1362 | KEYCODE_DELETE = -9, |
| 1363 | KEYCODE_PAGEUP = -10, |
| 1364 | KEYCODE_PAGEDOWN = -11, |
Denys Vlasenko | a17eeb8 | 2009-10-25 23:50:56 +0100 | [diff] [blame] | 1365 | |
| 1366 | KEYCODE_CTRL_UP = KEYCODE_UP & ~0x40, |
| 1367 | KEYCODE_CTRL_DOWN = KEYCODE_DOWN & ~0x40, |
| 1368 | KEYCODE_CTRL_RIGHT = KEYCODE_RIGHT & ~0x40, |
| 1369 | KEYCODE_CTRL_LEFT = KEYCODE_LEFT & ~0x40, |
Denys Vlasenko | 4b7db4f | 2009-05-29 10:39:06 +0200 | [diff] [blame] | 1370 | #if 0 |
| 1371 | KEYCODE_FUN1 = -12, |
| 1372 | KEYCODE_FUN2 = -13, |
| 1373 | KEYCODE_FUN3 = -14, |
| 1374 | KEYCODE_FUN4 = -15, |
| 1375 | KEYCODE_FUN5 = -16, |
| 1376 | KEYCODE_FUN6 = -17, |
| 1377 | KEYCODE_FUN7 = -18, |
| 1378 | KEYCODE_FUN8 = -19, |
| 1379 | KEYCODE_FUN9 = -20, |
| 1380 | KEYCODE_FUN10 = -21, |
| 1381 | KEYCODE_FUN11 = -22, |
| 1382 | KEYCODE_FUN12 = -23, |
| 1383 | #endif |
Denys Vlasenko | 180f585 | 2009-10-26 00:59:59 +0100 | [diff] [blame] | 1384 | KEYCODE_CURSOR_POS = -0x100, /* 0xfff..fff00 */ |
Denys Vlasenko | 4b7db4f | 2009-05-29 10:39:06 +0200 | [diff] [blame] | 1385 | /* How long is the longest ESC sequence we know? |
| 1386 | * We want it big enough to be able to contain |
| 1387 | * cursor position sequence "ESC [ 9999 ; 9999 R" |
| 1388 | */ |
| 1389 | KEYCODE_BUFFER_SIZE = 16 |
| 1390 | }; |
| 1391 | /* Note: fd may be in blocking or non-blocking mode, both make sense. |
| 1392 | * For one, less uses non-blocking mode. |
| 1393 | * Only the first read syscall inside read_key may block indefinitely |
| 1394 | * (unless fd is in non-blocking mode), |
| 1395 | * subsequent reads will time out after a few milliseconds. |
| 1396 | * Return of -1 means EOF or error (errno == 0 on EOF). |
| 1397 | * buffer[0] is used as a counter of buffered chars and must be 0 |
| 1398 | * on first call. |
Denys Vlasenko | 58f108e | 2010-03-11 21:17:55 +0100 | [diff] [blame] | 1399 | * timeout: |
| 1400 | * -2: do not poll for input; |
| 1401 | * -1: poll(-1) (i.e. block); |
| 1402 | * >=0: poll for TIMEOUT milliseconds, return -1/EAGAIN on timeout |
Denys Vlasenko | 4b7db4f | 2009-05-29 10:39:06 +0200 | [diff] [blame] | 1403 | */ |
Denys Vlasenko | 58f108e | 2010-03-11 21:17:55 +0100 | [diff] [blame] | 1404 | int64_t read_key(int fd, char *buffer, int timeout) FAST_FUNC; |
Tomas Heinrich | d2b0405 | 2010-03-09 14:09:24 +0100 | [diff] [blame] | 1405 | void read_key_ungets(char *buffer, const char *str, unsigned len) FAST_FUNC; |
Denys Vlasenko | 4b7db4f | 2009-05-29 10:39:06 +0200 | [diff] [blame] | 1406 | |
| 1407 | |
Denis Vlasenko | 38f6319 | 2007-01-22 09:03:07 +0000 | [diff] [blame] | 1408 | #if ENABLE_FEATURE_EDITING |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1409 | /* It's NOT just ENABLEd or disabled. It's a number: */ |
Denys Vlasenko | 2c4de5b | 2011-03-31 13:16:52 +0200 | [diff] [blame] | 1410 | # if defined CONFIG_FEATURE_EDITING_HISTORY && CONFIG_FEATURE_EDITING_HISTORY > 0 |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 1411 | # define MAX_HISTORY (CONFIG_FEATURE_EDITING_HISTORY + 0) |
Denys Vlasenko | 2c4de5b | 2011-03-31 13:16:52 +0200 | [diff] [blame] | 1412 | unsigned size_from_HISTFILESIZE(const char *hp); |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 1413 | # else |
| 1414 | # define MAX_HISTORY 0 |
| 1415 | # endif |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 1416 | typedef struct line_input_t { |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1417 | int flags; |
| 1418 | const char *path_lookup; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 1419 | # if MAX_HISTORY |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1420 | int cnt_history; |
| 1421 | int cur_history; |
Denys Vlasenko | 2c4de5b | 2011-03-31 13:16:52 +0200 | [diff] [blame] | 1422 | int max_history; /* must never be <= 0 */ |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 1423 | # if ENABLE_FEATURE_EDITING_SAVEHISTORY |
Denys Vlasenko | bede215 | 2011-09-04 16:12:33 +0200 | [diff] [blame] | 1424 | /* meaning of this field depends on FEATURE_EDITING_SAVE_ON_EXIT: |
| 1425 | * if !FEATURE_EDITING_SAVE_ON_EXIT: "how many lines are |
| 1426 | * in on-disk history" |
| 1427 | * if FEATURE_EDITING_SAVE_ON_EXIT: "how many in-memory lines are |
| 1428 | * also in on-disk history (and thus need to be skipped on save)" |
| 1429 | */ |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1430 | unsigned cnt_history_in_file; |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1431 | const char *hist_file; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 1432 | # endif |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1433 | char *history[MAX_HISTORY + 1]; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 1434 | # endif |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 1435 | } line_input_t; |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1436 | enum { |
Denys Vlasenko | e45af7a | 2011-09-04 16:15:24 +0200 | [diff] [blame] | 1437 | DO_HISTORY = 1 * (MAX_HISTORY > 0), |
| 1438 | TAB_COMPLETION = 2 * ENABLE_FEATURE_TAB_COMPLETION, |
| 1439 | USERNAME_COMPLETION = 4 * ENABLE_FEATURE_USERNAME_COMPLETION, |
| 1440 | VI_MODE = 8 * ENABLE_FEATURE_EDITING_VI, |
| 1441 | WITH_PATH_LOOKUP = 0x10, |
| 1442 | FOR_SHELL = DO_HISTORY | TAB_COMPLETION | USERNAME_COMPLETION, |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1443 | }; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1444 | line_input_t *new_line_input_t(int flags) FAST_FUNC; |
Denys Vlasenko | 5c2e81b | 2009-07-16 14:14:34 +0200 | [diff] [blame] | 1445 | /* So far static: void free_line_input_t(line_input_t *n) FAST_FUNC; */ |
Denys Vlasenko | 046341e | 2011-02-04 17:53:59 +0100 | [diff] [blame] | 1446 | /* |
| 1447 | * maxsize must be >= 2. |
Denys Vlasenko | 5c2e81b | 2009-07-16 14:14:34 +0200 | [diff] [blame] | 1448 | * Returns: |
Denis Vlasenko | 80667e3 | 2008-02-02 18:35:55 +0000 | [diff] [blame] | 1449 | * -1 on read errors or EOF, or on bare Ctrl-D, |
| 1450 | * 0 on ctrl-C (the line entered is still returned in 'command'), |
Denis Vlasenko | 6a5377a | 2007-09-25 18:35:28 +0000 | [diff] [blame] | 1451 | * >0 length of input string, including terminating '\n' |
Denis Vlasenko | 6a5377a | 2007-09-25 18:35:28 +0000 | [diff] [blame] | 1452 | */ |
Denys Vlasenko | 66c5b12 | 2011-02-08 05:07:02 +0100 | [diff] [blame] | 1453 | int read_line_input(line_input_t *st, const char *prompt, char *command, int maxsize, int timeout) FAST_FUNC; |
Denys Vlasenko | bede215 | 2011-09-04 16:12:33 +0200 | [diff] [blame] | 1454 | # if ENABLE_FEATURE_EDITING_SAVE_ON_EXIT |
| 1455 | void save_history(line_input_t *st); |
| 1456 | # endif |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1457 | #else |
Denys Vlasenko | 36df048 | 2009-10-19 16:07:28 +0200 | [diff] [blame] | 1458 | #define MAX_HISTORY 0 |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1459 | int read_line_input(const char* prompt, char* command, int maxsize) FAST_FUNC; |
Denys Vlasenko | 66c5b12 | 2011-02-08 05:07:02 +0100 | [diff] [blame] | 1460 | #define read_line_input(state, prompt, command, maxsize, timeout) \ |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1461 | read_line_input(prompt, command, maxsize) |
| 1462 | #endif |
| 1463 | |
| 1464 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1465 | #ifndef COMM_LEN |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 1466 | # ifdef TASK_COMM_LEN |
Denis Vlasenko | fa07680 | 2006-11-05 00:38:51 +0000 | [diff] [blame] | 1467 | enum { COMM_LEN = TASK_COMM_LEN }; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 1468 | # else |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1469 | /* synchronize with sizeof(task_struct.comm) in /usr/include/linux/sched.h */ |
Denis Vlasenko | fa07680 | 2006-11-05 00:38:51 +0000 | [diff] [blame] | 1470 | enum { COMM_LEN = 16 }; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 1471 | # endif |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1472 | #endif |
Alexander Shishkin | 0834a6d | 2010-08-28 23:20:34 +0200 | [diff] [blame] | 1473 | |
| 1474 | struct smaprec { |
| 1475 | unsigned long mapped_rw; |
| 1476 | unsigned long mapped_ro; |
| 1477 | unsigned long shared_clean; |
| 1478 | unsigned long shared_dirty; |
| 1479 | unsigned long private_clean; |
| 1480 | unsigned long private_dirty; |
| 1481 | unsigned long stack; |
| 1482 | unsigned long smap_pss, smap_swap; |
| 1483 | unsigned long smap_size; |
| 1484 | unsigned long smap_start; |
| 1485 | char smap_mode[5]; |
| 1486 | char *smap_name; |
| 1487 | }; |
| 1488 | |
| 1489 | #if !ENABLE_PMAP |
| 1490 | #define procps_read_smaps(pid, total, cb, data) \ |
| 1491 | procps_read_smaps(pid, total) |
| 1492 | #endif |
| 1493 | int FAST_FUNC procps_read_smaps(pid_t pid, struct smaprec *total, |
| 1494 | void (*cb)(struct smaprec *, void *), void *data); |
| 1495 | |
Denis Vlasenko | 512499c | 2007-08-26 18:23:13 +0000 | [diff] [blame] | 1496 | typedef struct procps_status_t { |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 1497 | DIR *dir; |
Denys Vlasenko | b410d4a | 2009-09-19 22:29:42 +0200 | [diff] [blame] | 1498 | IF_FEATURE_SHOW_THREADS(DIR *task_dir;) |
Denis Vlasenko | 512499c | 2007-08-26 18:23:13 +0000 | [diff] [blame] | 1499 | uint8_t shift_pages_to_bytes; |
| 1500 | uint8_t shift_pages_to_kb; |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 1501 | /* Fields are set to 0/NULL if failed to determine (or not requested) */ |
Denis Vlasenko | 3b3ca11 | 2008-07-17 18:39:36 +0000 | [diff] [blame] | 1502 | uint16_t argv_len; |
Denis Vlasenko | f7d07b1 | 2007-06-30 08:03:26 +0000 | [diff] [blame] | 1503 | char *argv0; |
Alexander Shishkin | e766f62 | 2009-07-29 01:35:13 +0200 | [diff] [blame] | 1504 | char *exe; |
Denis Vlasenko | 5e34ff2 | 2009-04-21 11:09:40 +0000 | [diff] [blame] | 1505 | IF_SELINUX(char *context;) |
Lauri Kasanen | 6578f2c | 2010-12-05 05:22:29 +0100 | [diff] [blame] | 1506 | IF_FEATURE_SHOW_THREADS(unsigned main_thread_pid;) |
Denis Vlasenko | 0696b8a | 2007-06-06 07:40:16 +0000 | [diff] [blame] | 1507 | /* Everything below must contain no ptrs to malloc'ed data: |
| 1508 | * it is memset(0) for each process in procps_scan() */ |
Denis Vlasenko | fc1e995 | 2007-08-29 18:23:36 +0000 | [diff] [blame] | 1509 | unsigned long vsz, rss; /* we round it to kbytes */ |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 1510 | unsigned long stime, utime; |
Denis Vlasenko | 5fee2e1 | 2008-01-05 03:26:41 +0000 | [diff] [blame] | 1511 | unsigned long start_time; |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 1512 | unsigned pid; |
| 1513 | unsigned ppid; |
| 1514 | unsigned pgid; |
| 1515 | unsigned sid; |
| 1516 | unsigned uid; |
| 1517 | unsigned gid; |
Denys Vlasenko | fca70a8 | 2009-07-03 22:16:17 +0200 | [diff] [blame] | 1518 | #if ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS |
| 1519 | unsigned ruid; |
| 1520 | unsigned rgid; |
| 1521 | int niceness; |
| 1522 | #endif |
Denis Vlasenko | 31789a8 | 2007-06-19 14:43:17 +0000 | [diff] [blame] | 1523 | unsigned tty_major,tty_minor; |
Denis Vlasenko | ff6e8e2 | 2007-09-08 16:51:19 +0000 | [diff] [blame] | 1524 | #if ENABLE_FEATURE_TOPMEM |
Alexander Shishkin | 0834a6d | 2010-08-28 23:20:34 +0200 | [diff] [blame] | 1525 | struct smaprec smaps; |
Denis Vlasenko | ff6e8e2 | 2007-09-08 16:51:19 +0000 | [diff] [blame] | 1526 | #endif |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 1527 | char state[4]; |
Denis Vlasenko | 98ebab8 | 2007-06-30 14:47:41 +0000 | [diff] [blame] | 1528 | /* basename of executable in exec(2), read from /proc/N/stat |
| 1529 | * (if executable is symlink or script, it is NOT replaced |
| 1530 | * by link target or interpreter name) */ |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 1531 | char comm[COMM_LEN]; |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 1532 | /* user/group? - use passwd/group parsing functions */ |
Denis Vlasenko | 17e7f04 | 2008-09-25 10:48:06 +0000 | [diff] [blame] | 1533 | #if ENABLE_FEATURE_TOP_SMP_PROCESS |
| 1534 | int last_seen_on_cpu; |
| 1535 | #endif |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1536 | } procps_status_t; |
Denys Vlasenko | fca70a8 | 2009-07-03 22:16:17 +0200 | [diff] [blame] | 1537 | /* flag bits for procps_scan(xx, flags) calls */ |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 1538 | enum { |
| 1539 | PSSCAN_PID = 1 << 0, |
| 1540 | PSSCAN_PPID = 1 << 1, |
| 1541 | PSSCAN_PGID = 1 << 2, |
| 1542 | PSSCAN_SID = 1 << 3, |
| 1543 | PSSCAN_UIDGID = 1 << 4, |
| 1544 | PSSCAN_COMM = 1 << 5, |
Denis Vlasenko | 98ebab8 | 2007-06-30 14:47:41 +0000 | [diff] [blame] | 1545 | /* PSSCAN_CMD = 1 << 6, - use read_cmdline instead */ |
Denis Vlasenko | f7d07b1 | 2007-06-30 08:03:26 +0000 | [diff] [blame] | 1546 | PSSCAN_ARGV0 = 1 << 7, |
Alexander Shishkin | e766f62 | 2009-07-29 01:35:13 +0200 | [diff] [blame] | 1547 | PSSCAN_EXE = 1 << 8, |
Denis Vlasenko | f7d07b1 | 2007-06-30 08:03:26 +0000 | [diff] [blame] | 1548 | PSSCAN_STATE = 1 << 9, |
| 1549 | PSSCAN_VSZ = 1 << 10, |
| 1550 | PSSCAN_RSS = 1 << 11, |
| 1551 | PSSCAN_STIME = 1 << 12, |
| 1552 | PSSCAN_UTIME = 1 << 13, |
| 1553 | PSSCAN_TTY = 1 << 14, |
Denis Vlasenko | ff6e8e2 | 2007-09-08 16:51:19 +0000 | [diff] [blame] | 1554 | PSSCAN_SMAPS = (1 << 15) * ENABLE_FEATURE_TOPMEM, |
Denis Vlasenko | 9f00e05 | 2009-02-14 01:36:11 +0000 | [diff] [blame] | 1555 | /* NB: used by find_pid_by_name(). Any applet using it |
| 1556 | * needs to be mentioned here. */ |
| 1557 | PSSCAN_ARGVN = (1 << 16) * (ENABLE_KILLALL |
| 1558 | || ENABLE_PGREP || ENABLE_PKILL |
| 1559 | || ENABLE_PIDOF |
Denis Vlasenko | 3266aa9 | 2009-04-01 11:24:04 +0000 | [diff] [blame] | 1560 | || ENABLE_SESTATUS |
Denis Vlasenko | 9f00e05 | 2009-02-14 01:36:11 +0000 | [diff] [blame] | 1561 | ), |
Denys Vlasenko | 4ff1ce0 | 2009-09-22 11:21:48 +0200 | [diff] [blame] | 1562 | PSSCAN_CONTEXT = (1 << 17) * ENABLE_SELINUX, |
Denis Vlasenko | 5fee2e1 | 2008-01-05 03:26:41 +0000 | [diff] [blame] | 1563 | PSSCAN_START_TIME = 1 << 18, |
Denys Vlasenko | fca70a8 | 2009-07-03 22:16:17 +0200 | [diff] [blame] | 1564 | PSSCAN_CPU = (1 << 19) * ENABLE_FEATURE_TOP_SMP_PROCESS, |
| 1565 | PSSCAN_NICE = (1 << 20) * ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS, |
| 1566 | PSSCAN_RUIDGID = (1 << 21) * ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS, |
Denys Vlasenko | b410d4a | 2009-09-19 22:29:42 +0200 | [diff] [blame] | 1567 | PSSCAN_TASKS = (1 << 22) * ENABLE_FEATURE_SHOW_THREADS, |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 1568 | }; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1569 | //procps_status_t* alloc_procps_scan(void) FAST_FUNC; |
| 1570 | void free_procps_scan(procps_status_t* sp) FAST_FUNC; |
| 1571 | procps_status_t* procps_scan(procps_status_t* sp, int flags) FAST_FUNC; |
Denys Vlasenko | 3a0f6f2 | 2009-09-12 00:15:34 +0200 | [diff] [blame] | 1572 | /* Format cmdline (up to col chars) into char buf[size] */ |
Denis Vlasenko | 98ebab8 | 2007-06-30 14:47:41 +0000 | [diff] [blame] | 1573 | /* Puts [comm] if cmdline is empty (-> process is a kernel thread) */ |
Denys Vlasenko | 3a0f6f2 | 2009-09-12 00:15:34 +0200 | [diff] [blame] | 1574 | void read_cmdline(char *buf, int size, unsigned pid, const char *comm) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1575 | pid_t *find_pid_by_name(const char* procName) FAST_FUNC; |
| 1576 | pid_t *pidlist_reverse(pid_t *pidList) FAST_FUNC; |
Denys Vlasenko | c9b9750 | 2010-08-16 02:49:21 +0200 | [diff] [blame] | 1577 | int starts_with_cpu(const char *str) FAST_FUNC; |
| 1578 | unsigned get_cpu_count(void) FAST_FUNC; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1579 | |
| 1580 | |
Denys Vlasenko | dd1061b | 2011-09-11 21:04:02 +0200 | [diff] [blame] | 1581 | /* Use strict=1 if you process input from untrusted source: |
| 1582 | * it will return NULL on invalid %xx (bad hex chars) |
| 1583 | * and str + 1 if decoded char is / or NUL. |
| 1584 | * In non-strict mode, it always succeeds (returns str), |
| 1585 | * and also it additionally decoded '+' to space. |
| 1586 | */ |
| 1587 | char *percent_decode_in_place(char *str, int strict) FAST_FUNC; |
| 1588 | |
| 1589 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1590 | extern const char bb_uuenc_tbl_base64[]; |
| 1591 | extern const char bb_uuenc_tbl_std[]; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1592 | void bb_uuencode(char *store, const void *s, int length, const char *tbl) FAST_FUNC; |
Denys Vlasenko | 9fe98f7 | 2010-09-16 17:51:13 +0200 | [diff] [blame] | 1593 | enum { |
| 1594 | BASE64_FLAG_UU_STOP = 0x100, |
| 1595 | /* Sign-extends to a value which never matches fgetc result: */ |
| 1596 | BASE64_FLAG_NO_STOP_CHAR = 0x80, |
| 1597 | }; |
| 1598 | void FAST_FUNC read_base64(FILE *src_stream, FILE *dst_stream, int flags); |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1599 | |
Denis Vlasenko | dd539f7 | 2006-11-01 20:20:37 +0000 | [diff] [blame] | 1600 | typedef struct md5_ctx_t { |
Denys Vlasenko | 302ad14 | 2010-10-19 02:16:12 +0200 | [diff] [blame] | 1601 | uint8_t wbuffer[64]; /* always correctly aligned for uint64_t */ |
| 1602 | void (*process_block)(struct md5_ctx_t*) FAST_FUNC; |
Denys Vlasenko | c48a5c6 | 2010-10-18 14:48:30 +0200 | [diff] [blame] | 1603 | uint64_t total64; /* must be directly before hash[] */ |
Denys Vlasenko | 302ad14 | 2010-10-19 02:16:12 +0200 | [diff] [blame] | 1604 | uint32_t hash[8]; /* 4 elements for md5, 5 for sha1, 8 for sha256 */ |
| 1605 | } md5_ctx_t; |
| 1606 | typedef struct md5_ctx_t sha1_ctx_t; |
| 1607 | typedef struct md5_ctx_t sha256_ctx_t; |
Denys Vlasenko | c48a5c6 | 2010-10-18 14:48:30 +0200 | [diff] [blame] | 1608 | typedef struct sha512_ctx_t { |
| 1609 | uint64_t total64[2]; /* must be directly before hash[] */ |
| 1610 | uint64_t hash[8]; |
Denys Vlasenko | 302ad14 | 2010-10-19 02:16:12 +0200 | [diff] [blame] | 1611 | uint8_t wbuffer[128]; /* always correctly aligned for uint64_t */ |
Denys Vlasenko | c48a5c6 | 2010-10-18 14:48:30 +0200 | [diff] [blame] | 1612 | } sha512_ctx_t; |
Denys Vlasenko | 302ad14 | 2010-10-19 02:16:12 +0200 | [diff] [blame] | 1613 | void md5_begin(md5_ctx_t *ctx) FAST_FUNC; |
| 1614 | void md5_hash(md5_ctx_t *ctx, const void *data, size_t length) FAST_FUNC; |
| 1615 | void md5_end(md5_ctx_t *ctx, void *resbuf) FAST_FUNC; |
| 1616 | void sha1_begin(sha1_ctx_t *ctx) FAST_FUNC; |
| 1617 | #define sha1_hash md5_hash |
| 1618 | void sha1_end(sha1_ctx_t *ctx, void *resbuf) FAST_FUNC; |
| 1619 | void sha256_begin(sha256_ctx_t *ctx) FAST_FUNC; |
| 1620 | #define sha256_hash md5_hash |
| 1621 | #define sha256_end sha1_end |
Denys Vlasenko | c48a5c6 | 2010-10-18 14:48:30 +0200 | [diff] [blame] | 1622 | void sha512_begin(sha512_ctx_t *ctx) FAST_FUNC; |
| 1623 | void sha512_hash(sha512_ctx_t *ctx, const void *buffer, size_t len) FAST_FUNC; |
| 1624 | void sha512_end(sha512_ctx_t *ctx, void *resbuf) FAST_FUNC; |
Denis Vlasenko | e9b9a19 | 2008-11-11 01:38:04 +0000 | [diff] [blame] | 1625 | |
Denys Vlasenko | 9ce642f | 2010-10-27 15:26:45 +0200 | [diff] [blame] | 1626 | extern uint32_t *global_crc32_table; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1627 | uint32_t *crc32_filltable(uint32_t *tbl256, int endian) FAST_FUNC; |
Denys Vlasenko | 9ce642f | 2010-10-27 15:26:45 +0200 | [diff] [blame] | 1628 | uint32_t crc32_block_endian1(uint32_t val, const void *buf, unsigned len, uint32_t *crc_table) FAST_FUNC; |
| 1629 | uint32_t crc32_block_endian0(uint32_t val, const void *buf, unsigned len, uint32_t *crc_table) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1630 | |
| 1631 | typedef struct masks_labels_t { |
| 1632 | const char *labels; |
| 1633 | const int masks[]; |
| 1634 | } masks_labels_t; |
| 1635 | int print_flags_separated(const int *masks, const char *labels, |
| 1636 | int flags, const char *separator) FAST_FUNC; |
| 1637 | int print_flags(const masks_labels_t *ml, int flags) FAST_FUNC; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1638 | |
Magnus Damm | f591499 | 2009-11-08 16:34:43 +0100 | [diff] [blame] | 1639 | typedef struct bb_progress_t { |
Denys Vlasenko | ab8d00d | 2011-02-11 19:09:30 +0100 | [diff] [blame] | 1640 | unsigned last_size; |
| 1641 | unsigned last_update_sec; |
| 1642 | unsigned last_change_sec; |
Magnus Damm | f591499 | 2009-11-08 16:34:43 +0100 | [diff] [blame] | 1643 | unsigned start_sec; |
Denys Vlasenko | d55e139 | 2011-02-11 18:56:13 +0100 | [diff] [blame] | 1644 | const char *curfile; |
Magnus Damm | f591499 | 2009-11-08 16:34:43 +0100 | [diff] [blame] | 1645 | } bb_progress_t; |
| 1646 | |
Denys Vlasenko | d55e139 | 2011-02-11 18:56:13 +0100 | [diff] [blame] | 1647 | #define is_bb_progress_inited(p) ((p)->curfile != NULL) |
| 1648 | #define bb_progress_free(p) do { \ |
| 1649 | if (ENABLE_UNICODE_SUPPORT) free((char*)((p)->curfile)); \ |
| 1650 | (p)->curfile = NULL; \ |
| 1651 | } while (0) |
| 1652 | void bb_progress_init(bb_progress_t *p, const char *curfile) FAST_FUNC; |
| 1653 | void bb_progress_update(bb_progress_t *p, |
Denys Vlasenko | 805aa9f | 2011-02-10 14:25:51 +0100 | [diff] [blame] | 1654 | uoff_t beg_range, |
| 1655 | uoff_t transferred, |
| 1656 | uoff_t totalsize) FAST_FUNC; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1657 | |
Denys Vlasenko | d55e139 | 2011-02-11 18:56:13 +0100 | [diff] [blame] | 1658 | |
Denis Vlasenko | 8f8f268 | 2006-10-03 21:00:43 +0000 | [diff] [blame] | 1659 | extern const char *applet_name; |
Denys Vlasenko | 0004e99 | 2010-09-01 12:01:17 +0200 | [diff] [blame] | 1660 | |
| 1661 | /* Some older linkers don't perform string merging, we used to have common strings |
| 1662 | * as global arrays to do it by hand. But: |
| 1663 | * (1) newer linkers do it themselves, |
| 1664 | * (2) however, they DONT merge string constants with global arrays, |
| 1665 | * even if the value is the same (!). Thus global arrays actually |
| 1666 | * increased size a bit: for example, "/etc/passwd" string from libc |
| 1667 | * wasn't merged with bb_path_passwd_file[] array! |
| 1668 | * Therefore now we use #defines. |
| 1669 | */ |
Bernhard Reutner-Fischer | 78e1d58 | 2008-01-13 17:52:53 +0000 | [diff] [blame] | 1670 | /* "BusyBox vN.N.N (timestamp or extra_version)" */ |
Denis Vlasenko | ca525b4 | 2007-06-13 12:27:17 +0000 | [diff] [blame] | 1671 | extern const char bb_banner[]; |
Denis Vlasenko | 0b5fd45 | 2006-09-19 09:55:09 +0000 | [diff] [blame] | 1672 | extern const char bb_msg_memory_exhausted[]; |
| 1673 | extern const char bb_msg_invalid_date[]; |
Denys Vlasenko | 0004e99 | 2010-09-01 12:01:17 +0200 | [diff] [blame] | 1674 | #define bb_msg_read_error "read error" |
| 1675 | #define bb_msg_write_error "write error" |
Denis Vlasenko | 0b5fd45 | 2006-09-19 09:55:09 +0000 | [diff] [blame] | 1676 | extern const char bb_msg_unknown[]; |
| 1677 | extern const char bb_msg_can_not_create_raw_socket[]; |
| 1678 | extern const char bb_msg_perm_denied_are_you_root[]; |
Denys Vlasenko | b2e5fc3 | 2009-11-25 14:52:47 +0100 | [diff] [blame] | 1679 | extern const char bb_msg_you_must_be_root[]; |
Denis Vlasenko | 0b5fd45 | 2006-09-19 09:55:09 +0000 | [diff] [blame] | 1680 | extern const char bb_msg_requires_arg[]; |
| 1681 | extern const char bb_msg_invalid_arg[]; |
| 1682 | extern const char bb_msg_standard_input[]; |
| 1683 | extern const char bb_msg_standard_output[]; |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 1684 | |
Denis Vlasenko | 98c0bba | 2007-01-26 23:31:05 +0000 | [diff] [blame] | 1685 | /* NB: (bb_hexdigits_upcase[i] | 0x20) -> lowercase hex digit */ |
Denis Vlasenko | 3a34d0c | 2007-01-12 22:10:34 +0000 | [diff] [blame] | 1686 | extern const char bb_hexdigits_upcase[]; |
Denis Vlasenko | 7ca3921 | 2006-11-21 20:34:21 +0000 | [diff] [blame] | 1687 | |
Denis Vlasenko | 0b5fd45 | 2006-09-19 09:55:09 +0000 | [diff] [blame] | 1688 | extern const char bb_path_wtmp_file[]; |
Denys Vlasenko | 0004e99 | 2010-09-01 12:01:17 +0200 | [diff] [blame] | 1689 | |
| 1690 | /* Busybox mount uses either /proc/mounts or /etc/mtab to |
| 1691 | * get the list of currently mounted filesystems */ |
| 1692 | #define bb_path_mtab_file IF_FEATURE_MTAB_SUPPORT("/etc/mtab")IF_NOT_FEATURE_MTAB_SUPPORT("/proc/mounts") |
| 1693 | |
Tito Ragusa | ad3d72f | 2011-01-16 23:39:45 +0100 | [diff] [blame] | 1694 | #define bb_path_passwd_file _PATH_PASSWD |
| 1695 | #define bb_path_group_file _PATH_GROUP |
| 1696 | #define bb_path_shadow_file _PATH_SHADOW |
| 1697 | #define bb_path_gshadow_file _PATH_GSHADOW |
Denys Vlasenko | 0004e99 | 2010-09-01 12:01:17 +0200 | [diff] [blame] | 1698 | |
| 1699 | #define bb_path_motd_file "/etc/motd" |
| 1700 | |
| 1701 | #define bb_dev_null "/dev/null" |
Denis Vlasenko | bdbbb7e | 2007-06-08 15:02:55 +0000 | [diff] [blame] | 1702 | extern const char bb_busybox_exec_path[]; |
Denis Vlasenko | 15611bb | 2007-06-12 08:52:02 +0000 | [diff] [blame] | 1703 | /* util-linux manpage says /sbin:/bin:/usr/sbin:/usr/bin, |
| 1704 | * but I want to save a few bytes here */ |
Denis Vlasenko | f5f75c5 | 2007-06-12 22:35:19 +0000 | [diff] [blame] | 1705 | extern const char bb_PATH_root_path[]; /* "PATH=/sbin:/usr/sbin:/bin:/usr/bin" */ |
| 1706 | #define bb_default_root_path (bb_PATH_root_path + sizeof("PATH")) |
| 1707 | #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] | 1708 | |
Denis Vlasenko | 703e202 | 2007-01-22 14:12:08 +0000 | [diff] [blame] | 1709 | extern const int const_int_0; |
| 1710 | extern const int const_int_1; |
| 1711 | |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 1712 | |
Denis Vlasenko | 8581863 | 2007-04-19 14:47:11 +0000 | [diff] [blame] | 1713 | /* Providing hard guarantee on minimum size (think of BUFSIZ == 128) */ |
Denis Vlasenko | 74324c8 | 2007-06-04 10:16:52 +0000 | [diff] [blame] | 1714 | enum { COMMON_BUFSIZE = (BUFSIZ >= 256*sizeof(void*) ? BUFSIZ+1 : 256*sizeof(void*)) }; |
| 1715 | extern char bb_common_bufsiz1[COMMON_BUFSIZE]; |
Denis Vlasenko | 972288e | 2007-03-15 00:57:01 +0000 | [diff] [blame] | 1716 | /* This struct is deliberately not defined. */ |
| 1717 | /* See docs/keep_data_small.txt */ |
| 1718 | struct globals; |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 1719 | /* '*const' ptr makes gcc optimize code much better. |
Denis Vlasenko | e324184 | 2007-08-13 10:36:25 +0000 | [diff] [blame] | 1720 | * Magic prevents ptr_to_globals from going into rodata. |
Denis Vlasenko | 574f2f4 | 2008-02-27 18:41:59 +0000 | [diff] [blame] | 1721 | * If you want to assign a value, use SET_PTR_TO_GLOBALS(x) */ |
Denis Vlasenko | bff32ce | 2007-03-15 19:48:35 +0000 | [diff] [blame] | 1722 | extern struct globals *const ptr_to_globals; |
Denis Vlasenko | 574f2f4 | 2008-02-27 18:41:59 +0000 | [diff] [blame] | 1723 | /* At least gcc 3.4.6 on mipsel system needs optimization barrier */ |
Bernhard Reutner-Fischer | 797c96d | 2008-06-06 10:31:39 +0000 | [diff] [blame] | 1724 | #define barrier() __asm__ __volatile__("":::"memory") |
Denis Vlasenko | 574f2f4 | 2008-02-27 18:41:59 +0000 | [diff] [blame] | 1725 | #define SET_PTR_TO_GLOBALS(x) do { \ |
Denys Vlasenko | 90a9904 | 2009-09-06 02:36:23 +0200 | [diff] [blame] | 1726 | (*(struct globals**)&ptr_to_globals) = (void*)(x); \ |
Denis Vlasenko | 574f2f4 | 2008-02-27 18:41:59 +0000 | [diff] [blame] | 1727 | barrier(); \ |
| 1728 | } while (0) |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 1729 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1730 | /* You can change LIBBB_DEFAULT_LOGIN_SHELL, but don't use it, |
| 1731 | * use bb_default_login_shell and following defines. |
| 1732 | * If you change LIBBB_DEFAULT_LOGIN_SHELL, |
| 1733 | * don't forget to change increment constant. */ |
Ladislav Michl | a73b87e | 2010-06-27 03:23:31 +0200 | [diff] [blame] | 1734 | #define LIBBB_DEFAULT_LOGIN_SHELL "-/bin/sh" |
Denis Vlasenko | 0b5fd45 | 2006-09-19 09:55:09 +0000 | [diff] [blame] | 1735 | extern const char bb_default_login_shell[]; |
Glenn L McGrath | dc4e75e | 2003-09-02 02:36:18 +0000 | [diff] [blame] | 1736 | /* "/bin/sh" */ |
Ladislav Michl | a73b87e | 2010-06-27 03:23:31 +0200 | [diff] [blame] | 1737 | #define DEFAULT_SHELL (bb_default_login_shell+1) |
Glenn L McGrath | dc4e75e | 2003-09-02 02:36:18 +0000 | [diff] [blame] | 1738 | /* "sh" */ |
Ladislav Michl | a73b87e | 2010-06-27 03:23:31 +0200 | [diff] [blame] | 1739 | #define DEFAULT_SHELL_SHORT_NAME (bb_default_login_shell+6) |
Glenn L McGrath | dc4e75e | 2003-09-02 02:36:18 +0000 | [diff] [blame] | 1740 | |
Jeremie Koenig | 816ed97 | 2010-05-27 15:46:29 +0200 | [diff] [blame] | 1741 | /* The following devices are the same on all systems. */ |
| 1742 | #define CURRENT_TTY "/dev/tty" |
| 1743 | #define DEV_CONSOLE "/dev/console" |
| 1744 | |
| 1745 | #if defined(__FreeBSD_kernel__) |
| 1746 | # define CURRENT_VC CURRENT_TTY |
| 1747 | # define VC_1 "/dev/ttyv0" |
| 1748 | # define VC_2 "/dev/ttyv1" |
| 1749 | # define VC_3 "/dev/ttyv2" |
| 1750 | # define VC_4 "/dev/ttyv3" |
| 1751 | # define VC_5 "/dev/ttyv4" |
| 1752 | # define VC_FORMAT "/dev/ttyv%d" |
| 1753 | #elif defined(__GNU__) |
| 1754 | # define CURRENT_VC CURRENT_TTY |
| 1755 | # define VC_1 "/dev/tty1" |
| 1756 | # define VC_2 "/dev/tty2" |
| 1757 | # define VC_3 "/dev/tty3" |
| 1758 | # define VC_4 "/dev/tty4" |
| 1759 | # define VC_5 "/dev/tty5" |
| 1760 | # define VC_FORMAT "/dev/tty%d" |
Denys Vlasenko | 1c26e05 | 2010-10-24 02:35:17 +0200 | [diff] [blame] | 1761 | #elif ENABLE_FEATURE_DEVFS |
| 1762 | /*Linux, obsolete devfs names */ |
Matt Kraai | 439e3df | 2001-07-23 14:52:08 +0000 | [diff] [blame] | 1763 | # define CURRENT_VC "/dev/vc/0" |
| 1764 | # define VC_1 "/dev/vc/1" |
| 1765 | # define VC_2 "/dev/vc/2" |
| 1766 | # define VC_3 "/dev/vc/3" |
| 1767 | # define VC_4 "/dev/vc/4" |
| 1768 | # define VC_5 "/dev/vc/5" |
Matt Kraai | 439e3df | 2001-07-23 14:52:08 +0000 | [diff] [blame] | 1769 | # define VC_FORMAT "/dev/vc/%d" |
Eric Andersen | c7a3fb9 | 2002-03-20 15:25:25 +0000 | [diff] [blame] | 1770 | # define LOOP_FORMAT "/dev/loop/%d" |
Denis Vlasenko | 0e2c9fb | 2007-08-03 14:16:24 +0000 | [diff] [blame] | 1771 | # define LOOP_NAMESIZE (sizeof("/dev/loop/") + sizeof(int)*3 + 1) |
Denis Vlasenko | 0b193a7 | 2006-09-29 21:47:11 +0000 | [diff] [blame] | 1772 | # define LOOP_NAME "/dev/loop/" |
Eric Andersen | 5f28455 | 2003-11-14 03:11:29 +0000 | [diff] [blame] | 1773 | # define FB_0 "/dev/fb/0" |
Matt Kraai | 439e3df | 2001-07-23 14:52:08 +0000 | [diff] [blame] | 1774 | #else |
Denys Vlasenko | 1c26e05 | 2010-10-24 02:35:17 +0200 | [diff] [blame] | 1775 | /*Linux, normal names */ |
Matt Kraai | 439e3df | 2001-07-23 14:52:08 +0000 | [diff] [blame] | 1776 | # define CURRENT_VC "/dev/tty0" |
| 1777 | # define VC_1 "/dev/tty1" |
| 1778 | # define VC_2 "/dev/tty2" |
| 1779 | # define VC_3 "/dev/tty3" |
| 1780 | # define VC_4 "/dev/tty4" |
| 1781 | # define VC_5 "/dev/tty5" |
Matt Kraai | 439e3df | 2001-07-23 14:52:08 +0000 | [diff] [blame] | 1782 | # define VC_FORMAT "/dev/tty%d" |
Eric Andersen | c7a3fb9 | 2002-03-20 15:25:25 +0000 | [diff] [blame] | 1783 | # define LOOP_FORMAT "/dev/loop%d" |
Denis Vlasenko | 0e2c9fb | 2007-08-03 14:16:24 +0000 | [diff] [blame] | 1784 | # define LOOP_NAMESIZE (sizeof("/dev/loop") + sizeof(int)*3 + 1) |
Denis Vlasenko | 0b193a7 | 2006-09-29 21:47:11 +0000 | [diff] [blame] | 1785 | # define LOOP_NAME "/dev/loop" |
Eric Andersen | 5f28455 | 2003-11-14 03:11:29 +0000 | [diff] [blame] | 1786 | # define FB_0 "/dev/fb0" |
Matt Kraai | 439e3df | 2001-07-23 14:52:08 +0000 | [diff] [blame] | 1787 | #endif |
| 1788 | |
Rob Landley | c57ec37 | 2006-04-10 17:07:15 +0000 | [diff] [blame] | 1789 | |
Denys Vlasenko | 9d57a80 | 2009-10-23 14:24:44 +0200 | [diff] [blame] | 1790 | #define ARRAY_SIZE(x) ((unsigned)(sizeof(x) / sizeof((x)[0]))) |
| 1791 | |
Rob Landley | b623a54 | 2006-05-31 22:09:03 +0000 | [diff] [blame] | 1792 | |
Denys Vlasenko | a7a1fd0 | 2009-10-23 13:05:03 +0200 | [diff] [blame] | 1793 | /* We redefine ctype macros. Unicode-correct handling of char types |
| 1794 | * can't be done with such byte-oriented operations anyway, |
| 1795 | * we don't lose anything. |
| 1796 | */ |
Rob Landley | 4ae905a | 2006-07-06 17:22:54 +0000 | [diff] [blame] | 1797 | #undef isalnum |
| 1798 | #undef isalpha |
| 1799 | #undef isascii |
| 1800 | #undef isblank |
| 1801 | #undef iscntrl |
Denys Vlasenko | a7a1fd0 | 2009-10-23 13:05:03 +0200 | [diff] [blame] | 1802 | #undef isdigit |
Rob Landley | 4ae905a | 2006-07-06 17:22:54 +0000 | [diff] [blame] | 1803 | #undef isgraph |
| 1804 | #undef islower |
| 1805 | #undef isprint |
Denys Vlasenko | a7a1fd0 | 2009-10-23 13:05:03 +0200 | [diff] [blame] | 1806 | #undef ispunct |
Denys Vlasenko | f2cbb03 | 2009-10-23 03:16:08 +0200 | [diff] [blame] | 1807 | #undef isspace |
Denys Vlasenko | a7a1fd0 | 2009-10-23 13:05:03 +0200 | [diff] [blame] | 1808 | #undef isupper |
| 1809 | #undef isxdigit |
| 1810 | #undef toupper |
| 1811 | #undef tolower |
Rob Landley | 4ae905a | 2006-07-06 17:22:54 +0000 | [diff] [blame] | 1812 | |
Denys Vlasenko | a7a1fd0 | 2009-10-23 13:05:03 +0200 | [diff] [blame] | 1813 | /* We save ~500 bytes on isdigit alone. |
Denys Vlasenko | 7b4cd6f | 2009-10-23 02:22:03 +0200 | [diff] [blame] | 1814 | * BTW, x86 likes (unsigned char) cast more than (unsigned). */ |
Denys Vlasenko | 8684cbb | 2009-11-18 11:34:43 +0100 | [diff] [blame] | 1815 | |
| 1816 | /* These work the same for ASCII and Unicode, |
| 1817 | * assuming no one asks "is this a *Unicode* letter?" using isalpha(letter) */ |
Denys Vlasenko | f2cbb03 | 2009-10-23 03:16:08 +0200 | [diff] [blame] | 1818 | #define isascii(a) ((unsigned char)(a) <= 0x7f) |
Denys Vlasenko | 8684cbb | 2009-11-18 11:34:43 +0100 | [diff] [blame] | 1819 | #define isdigit(a) ((unsigned char)((a) - '0') <= 9) |
Denys Vlasenko | f2cbb03 | 2009-10-23 03:16:08 +0200 | [diff] [blame] | 1820 | #define isupper(a) ((unsigned char)((a) - 'A') <= ('Z' - 'A')) |
| 1821 | #define islower(a) ((unsigned char)((a) - 'a') <= ('z' - 'a')) |
Denys Vlasenko | a7a1fd0 | 2009-10-23 13:05:03 +0200 | [diff] [blame] | 1822 | #define isalpha(a) ((unsigned char)(((a)|0x20) - 'a') <= ('z' - 'a')) |
Denys Vlasenko | f2cbb03 | 2009-10-23 03:16:08 +0200 | [diff] [blame] | 1823 | #define isblank(a) ({ unsigned char bb__isblank = (a); bb__isblank == ' ' || bb__isblank == '\t'; }) |
| 1824 | #define iscntrl(a) ({ unsigned char bb__iscntrl = (a); bb__iscntrl < ' ' || bb__iscntrl == 0x7f; }) |
Denys Vlasenko | a7a1fd0 | 2009-10-23 13:05:03 +0200 | [diff] [blame] | 1825 | /* In POSIX/C locale isspace is only these chars: "\t\n\v\f\r" and space. |
Denys Vlasenko | f125b6d | 2009-10-22 19:41:45 +0200 | [diff] [blame] | 1826 | * "\t\n\v\f\r" happen to have ASCII codes 9,10,11,12,13. |
Denys Vlasenko | f125b6d | 2009-10-22 19:41:45 +0200 | [diff] [blame] | 1827 | */ |
Denys Vlasenko | f125b6d | 2009-10-22 19:41:45 +0200 | [diff] [blame] | 1828 | #define isspace(a) ({ unsigned char bb__isspace = (a) - 9; bb__isspace == (' ' - 9) || bb__isspace <= (13 - 9); }) |
Denys Vlasenko | 8684cbb | 2009-11-18 11:34:43 +0100 | [diff] [blame] | 1829 | // Unsafe wrt NUL: #define ispunct(a) (strchr("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~", (a)) != NULL) |
| 1830 | #define ispunct(a) (strchrnul("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~", (a))[0]) |
| 1831 | // Bigger code: #define isalnum(a) ({ unsigned char bb__isalnum = (a) - '0'; bb__isalnum <= 9 || ((bb__isalnum - ('A' - '0')) & 0xdf) <= 25; }) |
Denys Vlasenko | 11c12c4 | 2009-10-23 13:57:24 +0200 | [diff] [blame] | 1832 | #define isalnum(a) bb_ascii_isalnum(a) |
| 1833 | static ALWAYS_INLINE int bb_ascii_isalnum(unsigned char a) |
| 1834 | { |
| 1835 | unsigned char b = a - '0'; |
| 1836 | if (b <= 9) |
| 1837 | return (b <= 9); |
| 1838 | b = (a|0x20) - 'a'; |
| 1839 | return b <= 'z' - 'a'; |
| 1840 | } |
| 1841 | #define isxdigit(a) bb_ascii_isxdigit(a) |
| 1842 | static ALWAYS_INLINE int bb_ascii_isxdigit(unsigned char a) |
| 1843 | { |
| 1844 | unsigned char b = a - '0'; |
| 1845 | if (b <= 9) |
| 1846 | return (b <= 9); |
| 1847 | b = (a|0x20) - 'a'; |
| 1848 | return b <= 'f' - 'a'; |
| 1849 | } |
Denys Vlasenko | a7a1fd0 | 2009-10-23 13:05:03 +0200 | [diff] [blame] | 1850 | #define toupper(a) bb_ascii_toupper(a) |
| 1851 | static ALWAYS_INLINE unsigned char bb_ascii_toupper(unsigned char a) |
| 1852 | { |
| 1853 | unsigned char b = a - 'a'; |
| 1854 | if (b <= ('z' - 'a')) |
| 1855 | a -= 'a' - 'A'; |
| 1856 | return a; |
| 1857 | } |
| 1858 | #define tolower(a) bb_ascii_tolower(a) |
| 1859 | static ALWAYS_INLINE unsigned char bb_ascii_tolower(unsigned char a) |
| 1860 | { |
| 1861 | unsigned char b = a - 'A'; |
| 1862 | if (b <= ('Z' - 'A')) |
| 1863 | a += 'a' - 'A'; |
| 1864 | return a; |
| 1865 | } |
Denys Vlasenko | f125b6d | 2009-10-22 19:41:45 +0200 | [diff] [blame] | 1866 | |
Denys Vlasenko | 8684cbb | 2009-11-18 11:34:43 +0100 | [diff] [blame] | 1867 | /* In ASCII and Unicode, these are likely to be very different. |
| 1868 | * Let's prevent ambiguous usage from the start */ |
| 1869 | #define isgraph(a) isgraph_is_ambiguous_dont_use(a) |
| 1870 | #define isprint(a) isprint_is_ambiguous_dont_use(a) |
| 1871 | /* NB: must not treat EOF as isgraph or isprint */ |
| 1872 | #define isgraph_asciionly(a) ((unsigned)((a) - 0x21) <= 0x7e - 0x21) |
| 1873 | #define isprint_asciionly(a) ((unsigned)((a) - 0x20) <= 0x7e - 0x20) |
| 1874 | |
Denys Vlasenko | f2cbb03 | 2009-10-23 03:16:08 +0200 | [diff] [blame] | 1875 | |
Denis Vlasenko | f81e8db | 2009-04-09 12:35:13 +0000 | [diff] [blame] | 1876 | POP_SAVED_FUNCTION_VISIBILITY |
| 1877 | |
Bernhard Reutner-Fischer | 73561cc | 2006-08-28 23:31:54 +0000 | [diff] [blame] | 1878 | #endif |