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> |
Thomas Petazzoni | af4f0e4 | 2013-10-16 19:59:45 +0200 | [diff] [blame] | 35 | /* There are two incompatible basename's, let's not use them! */ |
Denys Vlasenko | d48fdde | 2011-09-10 13:48:34 +0200 | [diff] [blame] | 36 | /* See the dirname/basename man page for details */ |
| 37 | #include <libgen.h> /* dirname,basename */ |
| 38 | #undef basename |
| 39 | #define basename dont_use_basename |
Thomas Petazzoni | af4f0e4 | 2013-10-16 19:59:45 +0200 | [diff] [blame] | 40 | #include <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> |
Denys Vlasenko | a76dd50 | 2012-01-08 16:11:38 +0100 | [diff] [blame] | 54 | #include <pwd.h> |
| 55 | #include <grp.h> |
Denys Vlasenko | 3e0c428 | 2012-01-08 16:13:55 +0100 | [diff] [blame] | 56 | #if ENABLE_FEATURE_SHADOWPASSWDS |
| 57 | # if !ENABLE_USE_BB_SHADOW |
| 58 | /* If using busybox's shadow implementation, do not include the shadow.h |
| 59 | * header as the toolchain may not provide it at all. |
| 60 | */ |
| 61 | # include <shadow.h> |
| 62 | # endif |
| 63 | #endif |
Denys Vlasenko | a76dd50 | 2012-01-08 16:11:38 +0100 | [diff] [blame] | 64 | #if defined(ANDROID) || defined(__ANDROID__) |
| 65 | # define endpwent() ((void)0) |
| 66 | # define endgrent() ((void)0) |
| 67 | #endif |
Mike Frysinger | 22876c7 | 2008-02-07 22:10:07 +0000 | [diff] [blame] | 68 | #ifdef HAVE_MNTENT_H |
Waldemar Brodkorb | 95b83ba | 2010-08-06 09:17:26 +0200 | [diff] [blame] | 69 | # include <mntent.h> |
Mike Frysinger | 22876c7 | 2008-02-07 22:10:07 +0000 | [diff] [blame] | 70 | #endif |
Mike Frysinger | 9412ec7 | 2008-02-07 22:41:33 +0000 | [diff] [blame] | 71 | #ifdef HAVE_SYS_STATFS_H |
Waldemar Brodkorb | 95b83ba | 2010-08-06 09:17:26 +0200 | [diff] [blame] | 72 | # include <sys/statfs.h> |
Mike Frysinger | 9412ec7 | 2008-02-07 22:41:33 +0000 | [diff] [blame] | 73 | #endif |
Denys Vlasenko | 67905e2 | 2011-07-26 13:42:12 +0200 | [diff] [blame] | 74 | /* Don't do this here: |
| 75 | * #include <sys/sysinfo.h> |
| 76 | * Some linux/ includes pull in conflicting definition |
| 77 | * of struct sysinfo (only in some toolchanins), which breaks build. |
| 78 | * Include sys/sysinfo.h only in those files which need it. |
| 79 | */ |
Denis Vlasenko | b5a122b | 2006-12-30 14:46:51 +0000 | [diff] [blame] | 80 | #if ENABLE_SELINUX |
Waldemar Brodkorb | 95b83ba | 2010-08-06 09:17:26 +0200 | [diff] [blame] | 81 | # include <selinux/selinux.h> |
| 82 | # include <selinux/context.h> |
| 83 | # include <selinux/flask.h> |
| 84 | # include <selinux/av_permissions.h> |
Eric Andersen | 9e48045 | 2003-07-03 10:07:04 +0000 | [diff] [blame] | 85 | #endif |
Denys Vlasenko | 8d0e0cd | 2011-01-25 23:21:46 +0100 | [diff] [blame] | 86 | #if ENABLE_FEATURE_UTMP |
Bernhard Reutner-Fischer | 7d86384 | 2015-04-19 23:45:17 +0200 | [diff] [blame] | 87 | # if defined __UCLIBC__ && ( \ |
| 88 | (UCLIBC_VERSION >= KERNEL_VERSION(0, 9, 32) \ |
| 89 | && UCLIBC_VERSION < KERNEL_VERSION(0, 9, 34) \ |
| 90 | && defined __UCLIBC_HAS_UTMPX__ \ |
| 91 | ) || ( \ |
| 92 | UCLIBC_VERSION >= KERNEL_VERSION(0, 9, 34) \ |
| 93 | ) \ |
| 94 | ) |
| 95 | # include <utmpx.h> |
| 96 | # elif defined __UCLIBC__ |
| 97 | # include <utmp.h> |
| 98 | # define utmpx utmp |
| 99 | # define setutxent setutent |
| 100 | # define endutxent endutent |
| 101 | # define getutxent getutent |
| 102 | # define getutxid getutid |
| 103 | # define getutxline getutline |
| 104 | # define pututxline pututline |
| 105 | # define utmpxname utmpname |
| 106 | # define updwtmpx updwtmp |
| 107 | # define _PATH_UTMPX _PATH_UTMP |
| 108 | # else |
| 109 | # include <utmpx.h> |
| 110 | # endif |
Denys Vlasenko | 8d0e0cd | 2011-01-25 23:21:46 +0100 | [diff] [blame] | 111 | #endif |
Denis Vlasenko | b5a122b | 2006-12-30 14:46:51 +0000 | [diff] [blame] | 112 | #if ENABLE_LOCALE_SUPPORT |
Denys Vlasenko | 9d57a80 | 2009-10-23 14:24:44 +0200 | [diff] [blame] | 113 | # include <locale.h> |
Rob Landley | eb84a42 | 2006-09-20 21:41:13 +0000 | [diff] [blame] | 114 | #else |
Denys Vlasenko | 9d57a80 | 2009-10-23 14:24:44 +0200 | [diff] [blame] | 115 | # define setlocale(x,y) ((void)0) |
Rob Landley | d921b2e | 2006-08-03 15:41:12 +0000 | [diff] [blame] | 116 | #endif |
Denis Vlasenko | 98636eb | 2008-05-09 17:59:34 +0000 | [diff] [blame] | 117 | #ifdef DMALLOC |
Denys Vlasenko | 9d57a80 | 2009-10-23 14:24:44 +0200 | [diff] [blame] | 118 | # include <dmalloc.h> |
Denis Vlasenko | b5a122b | 2006-12-30 14:46:51 +0000 | [diff] [blame] | 119 | #endif |
Tito Ragusa | ad3d72f | 2011-01-16 23:39:45 +0100 | [diff] [blame] | 120 | /* Just in case libc doesn't define some of these... */ |
| 121 | #ifndef _PATH_PASSWD |
| 122 | #define _PATH_PASSWD "/etc/passwd" |
| 123 | #endif |
| 124 | #ifndef _PATH_GROUP |
| 125 | #define _PATH_GROUP "/etc/group" |
| 126 | #endif |
| 127 | #ifndef _PATH_SHADOW |
| 128 | #define _PATH_SHADOW "/etc/shadow" |
| 129 | #endif |
| 130 | #ifndef _PATH_GSHADOW |
| 131 | #define _PATH_GSHADOW "/etc/gshadow" |
| 132 | #endif |
Waldemar Brodkorb | 95b83ba | 2010-08-06 09:17:26 +0200 | [diff] [blame] | 133 | #if defined __FreeBSD__ || defined __OpenBSD__ |
Denys Vlasenko | bb1dcc9 | 2010-02-02 12:45:38 +0100 | [diff] [blame] | 134 | # include <netinet/in.h> |
| 135 | # include <arpa/inet.h> |
| 136 | #elif defined __APPLE__ |
| 137 | # include <netinet/in.h> |
| 138 | #else |
| 139 | # include <arpa/inet.h> |
| 140 | # if !defined(__socklen_t_defined) && !defined(_SOCKLEN_T_DECLARED) |
| 141 | /* We #define socklen_t *after* includes, otherwise we get |
| 142 | * typedef redefinition errors from system headers |
| 143 | * (in case "is it defined already" detection above failed) |
| 144 | */ |
| 145 | # define socklen_t bb_socklen_t |
| 146 | typedef unsigned socklen_t; |
| 147 | # endif |
| 148 | #endif |
Chris Rees | 330718e | 2011-01-24 17:07:06 +0100 | [diff] [blame] | 149 | #ifndef HAVE_CLEARENV |
| 150 | # define clearenv() do { if (environ) environ[0] = NULL; } while (0) |
| 151 | #endif |
| 152 | #ifndef HAVE_FDATASYNC |
| 153 | # define fdatasync fsync |
| 154 | #endif |
| 155 | #ifndef HAVE_XTABS |
| 156 | # define XTABS TAB3 |
| 157 | #endif |
Denys Vlasenko | bb1dcc9 | 2010-02-02 12:45:38 +0100 | [diff] [blame] | 158 | |
Denis Vlasenko | 98636eb | 2008-05-09 17:59:34 +0000 | [diff] [blame] | 159 | |
Denis Vlasenko | af6cca5 | 2008-05-25 04:31:54 +0000 | [diff] [blame] | 160 | /* Some libc's forget to declare these, do it ourself */ |
Denis Vlasenko | 847fa77 | 2008-01-28 22:45:43 +0000 | [diff] [blame] | 161 | |
Denis Vlasenko | cac0f5b | 2008-09-25 10:20:46 +0000 | [diff] [blame] | 162 | extern char **environ; |
Denis Vlasenko | 7e3a5f5 | 2007-11-16 20:18:54 +0000 | [diff] [blame] | 163 | #if defined(__GLIBC__) && __GLIBC__ < 2 |
| 164 | int vdprintf(int d, const char *format, va_list ap); |
Rob Landley | 362dc2b | 2006-06-05 17:35:24 +0000 | [diff] [blame] | 165 | #endif |
Denis Vlasenko | 7e3a5f5 | 2007-11-16 20:18:54 +0000 | [diff] [blame] | 166 | /* klogctl is in libc's klog.h, but we cheat and not #include that */ |
| 167 | int klogctl(int type, char *b, int len); |
Denys Vlasenko | bb1dcc9 | 2010-02-02 12:45:38 +0100 | [diff] [blame] | 168 | #ifndef PATH_MAX |
| 169 | # define PATH_MAX 256 |
| 170 | #endif |
| 171 | #ifndef BUFSIZ |
| 172 | # define BUFSIZ 4096 |
| 173 | #endif |
Rob Landley | 362dc2b | 2006-06-05 17:35:24 +0000 | [diff] [blame] | 174 | |
Denis Vlasenko | 7e3a5f5 | 2007-11-16 20:18:54 +0000 | [diff] [blame] | 175 | |
Denys Vlasenko | 0c4cf42 | 2011-06-30 02:44:27 +0200 | [diff] [blame] | 176 | /* Busybox does not use threads, we can speed up stdio. */ |
Dan Fandrich | 75214cf | 2011-06-30 02:59:17 +0200 | [diff] [blame] | 177 | #ifdef HAVE_UNLOCKED_STDIO |
| 178 | # undef getc |
| 179 | # define getc(stream) getc_unlocked(stream) |
| 180 | # undef getchar |
| 181 | # define getchar() getchar_unlocked() |
| 182 | # undef putc |
| 183 | # define putc(c, stream) putc_unlocked(c, stream) |
| 184 | # undef putchar |
| 185 | # define putchar(c) putchar_unlocked(c) |
| 186 | # undef fgetc |
| 187 | # define fgetc(stream) getc_unlocked(stream) |
| 188 | # undef fputc |
| 189 | # define fputc(c, stream) putc_unlocked(c, stream) |
| 190 | #endif |
Denys Vlasenko | 0c4cf42 | 2011-06-30 02:44:27 +0200 | [diff] [blame] | 191 | /* Above functions are required by POSIX.1-2008, below ones are extensions */ |
Dan Fandrich | 75214cf | 2011-06-30 02:59:17 +0200 | [diff] [blame] | 192 | #ifdef HAVE_UNLOCKED_LINE_OPS |
| 193 | # undef fgets |
| 194 | # define fgets(s, n, stream) fgets_unlocked(s, n, stream) |
| 195 | # undef fputs |
| 196 | # define fputs(s, stream) fputs_unlocked(s, stream) |
| 197 | #endif |
Denys Vlasenko | 0644891 | 2011-06-20 10:06:28 +0200 | [diff] [blame] | 198 | |
| 199 | |
Denis Vlasenko | 98636eb | 2008-05-09 17:59:34 +0000 | [diff] [blame] | 200 | /* Make all declarations hidden (-fvisibility flag only affects definitions) */ |
| 201 | /* (don't include system headers after this until corresponding pop!) */ |
Denis Vlasenko | f81e8db | 2009-04-09 12:35:13 +0000 | [diff] [blame] | 202 | PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN |
Denis Vlasenko | 98636eb | 2008-05-09 17:59:34 +0000 | [diff] [blame] | 203 | |
| 204 | |
| 205 | #if ENABLE_USE_BB_PWD_GRP |
| 206 | # include "pwd_.h" |
| 207 | # include "grp_.h" |
| 208 | #endif |
| 209 | #if ENABLE_FEATURE_SHADOWPASSWDS |
| 210 | # if ENABLE_USE_BB_SHADOW |
| 211 | # include "shadow_.h" |
| 212 | # endif |
| 213 | #endif |
| 214 | |
Denis Vlasenko | 7e3a5f5 | 2007-11-16 20:18:54 +0000 | [diff] [blame] | 215 | /* Tested to work correctly with all int types (IIRC :]) */ |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 216 | #define MAXINT(T) (T)( \ |
| 217 | ((T)-1) > 0 \ |
| 218 | ? (T)-1 \ |
| 219 | : (T)~((T)1 << (sizeof(T)*8-1)) \ |
| 220 | ) |
| 221 | |
| 222 | #define MININT(T) (T)( \ |
| 223 | ((T)-1) > 0 \ |
| 224 | ? (T)0 \ |
| 225 | : ((T)1 << (sizeof(T)*8-1)) \ |
| 226 | ) |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 227 | |
Denis Vlasenko | 5625415 | 2006-10-07 16:24:46 +0000 | [diff] [blame] | 228 | /* Large file support */ |
Denis Vlasenko | 7e3a5f5 | 2007-11-16 20:18:54 +0000 | [diff] [blame] | 229 | /* 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] | 230 | * (stat, lseek etc) mapped to "largefile" variants by libc. |
| 231 | * Practically it means that open() automatically has O_LARGEFILE added |
| 232 | * and all filesize/file_offset parameters and struct members are "large" |
| 233 | * (in today's world - signed 64bit). For full support of large files, |
| 234 | * we need a few helper #defines (below) and careful use of off_t |
| 235 | * instead of int/ssize_t. No lseek64(), O_LARGEFILE etc necessary */ |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 236 | #if ENABLE_LFS |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 237 | /* CONFIG_LFS is on */ |
| 238 | # if ULONG_MAX > 0xffffffff |
| 239 | /* "long" is long enough on this system */ |
Denis Vlasenko | 9d04b6b | 2009-03-28 02:13:01 +0000 | [diff] [blame] | 240 | typedef unsigned long uoff_t; |
Denys Vlasenko | f59a50e | 2011-11-16 21:30:19 +0100 | [diff] [blame] | 241 | # define XATOOFF(a) xatoul_range((a), 0, LONG_MAX) |
Denis Vlasenko | d686a04 | 2006-11-27 14:43:21 +0000 | [diff] [blame] | 242 | /* usage: sz = BB_STRTOOFF(s, NULL, 10); if (errno || sz < 0) die(); */ |
| 243 | # define BB_STRTOOFF bb_strtoul |
| 244 | # define STRTOOFF strtoul |
Denis Vlasenko | cf30cc8 | 2006-11-24 14:53:18 +0000 | [diff] [blame] | 245 | /* usage: printf("size: %"OFF_FMT"d (%"OFF_FMT"x)\n", sz, sz); */ |
| 246 | # define OFF_FMT "l" |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 247 | # else |
Denis Vlasenko | cba9ef5 | 2006-10-10 21:00:47 +0000 | [diff] [blame] | 248 | /* "long" is too short, need "long long" */ |
Denis Vlasenko | 9d04b6b | 2009-03-28 02:13:01 +0000 | [diff] [blame] | 249 | typedef unsigned long long uoff_t; |
Denys Vlasenko | f59a50e | 2011-11-16 21:30:19 +0100 | [diff] [blame] | 250 | # define XATOOFF(a) xatoull_range((a), 0, LLONG_MAX) |
Denis Vlasenko | d686a04 | 2006-11-27 14:43:21 +0000 | [diff] [blame] | 251 | # define BB_STRTOOFF bb_strtoull |
| 252 | # define STRTOOFF strtoull |
Denis Vlasenko | cf30cc8 | 2006-11-24 14:53:18 +0000 | [diff] [blame] | 253 | # define OFF_FMT "ll" |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 254 | # endif |
Denis Vlasenko | 5625415 | 2006-10-07 16:24:46 +0000 | [diff] [blame] | 255 | #else |
Denis Vlasenko | 5fa7148 | 2006-12-12 22:31:15 +0000 | [diff] [blame] | 256 | /* CONFIG_LFS is off */ |
| 257 | # if UINT_MAX == 0xffffffff |
| 258 | /* While sizeof(off_t) == sizeof(int), off_t is typedef'ed to long anyway. |
| 259 | * gcc will throw warnings on printf("%d", off_t). Crap... */ |
Denis Vlasenko | 9d04b6b | 2009-03-28 02:13:01 +0000 | [diff] [blame] | 260 | typedef unsigned long uoff_t; |
Denys Vlasenko | 7783248 | 2010-08-12 14:14:45 +0200 | [diff] [blame] | 261 | # define XATOOFF(a) xatoi_positive(a) |
Denis Vlasenko | 5fa7148 | 2006-12-12 22:31:15 +0000 | [diff] [blame] | 262 | # define BB_STRTOOFF bb_strtou |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 263 | # define STRTOOFF strtol |
Denis Vlasenko | 5fa7148 | 2006-12-12 22:31:15 +0000 | [diff] [blame] | 264 | # define OFF_FMT "l" |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 265 | # else |
Denis Vlasenko | 9d04b6b | 2009-03-28 02:13:01 +0000 | [diff] [blame] | 266 | typedef unsigned long uoff_t; |
Denys Vlasenko | f59a50e | 2011-11-16 21:30:19 +0100 | [diff] [blame] | 267 | # define XATOOFF(a) xatoul_range((a), 0, LONG_MAX) |
Denis Vlasenko | 5fa7148 | 2006-12-12 22:31:15 +0000 | [diff] [blame] | 268 | # define BB_STRTOOFF bb_strtoul |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 269 | # define STRTOOFF strtol |
Denis Vlasenko | cf30cc8 | 2006-11-24 14:53:18 +0000 | [diff] [blame] | 270 | # define OFF_FMT "l" |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 271 | # endif |
Denis Vlasenko | 5625415 | 2006-10-07 16:24:46 +0000 | [diff] [blame] | 272 | #endif |
| 273 | /* scary. better ideas? (but do *test* them first!) */ |
Denis Vlasenko | 7039a66 | 2006-10-08 17:54:47 +0000 | [diff] [blame] | 274 | #define OFF_T_MAX ((off_t)~((off_t)1 << (sizeof(off_t)*8-1))) |
Denys Vlasenko | 1dc80ba | 2011-11-17 21:51:32 +0100 | [diff] [blame] | 275 | /* Users report bionic to use 32-bit off_t even if LARGEFILE support is requested. |
| 276 | * We misdetected that. Don't let it build: |
| 277 | */ |
| 278 | struct BUG_off_t_size_is_misdetected { |
| 279 | char BUG_off_t_size_is_misdetected[sizeof(off_t) == sizeof(uoff_t) ? 1 : -1]; |
| 280 | }; |
Denis Vlasenko | 5625415 | 2006-10-07 16:24:46 +0000 | [diff] [blame] | 281 | |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 282 | /* Some useful definitions */ |
Bernhard Reutner-Fischer | 781e42d | 2006-05-26 14:41:40 +0000 | [diff] [blame] | 283 | #undef FALSE |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 284 | #define FALSE ((int) 0) |
Bernhard Reutner-Fischer | 781e42d | 2006-05-26 14:41:40 +0000 | [diff] [blame] | 285 | #undef TRUE |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 286 | #define TRUE ((int) 1) |
Bernhard Reutner-Fischer | 781e42d | 2006-05-26 14:41:40 +0000 | [diff] [blame] | 287 | #undef SKIP |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 288 | #define SKIP ((int) 2) |
| 289 | |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 290 | /* Macros for min/max. */ |
| 291 | #ifndef MIN |
Denys Vlasenko | e4dcba1 | 2010-10-28 18:57:19 +0200 | [diff] [blame] | 292 | #define MIN(a,b) (((a)<(b))?(a):(b)) |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 293 | #endif |
| 294 | |
| 295 | #ifndef MAX |
Denys Vlasenko | e4dcba1 | 2010-10-28 18:57:19 +0200 | [diff] [blame] | 296 | #define MAX(a,b) (((a)>(b))?(a):(b)) |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 297 | #endif |
| 298 | |
Bernhard Reutner-Fischer | 421d9e5 | 2006-04-03 16:39:31 +0000 | [diff] [blame] | 299 | /* buffer allocation schemes */ |
Denis Vlasenko | b5a122b | 2006-12-30 14:46:51 +0000 | [diff] [blame] | 300 | #if ENABLE_FEATURE_BUFFERS_GO_ON_STACK |
Denis Vlasenko | bbd695d | 2007-04-08 10:52:28 +0000 | [diff] [blame] | 301 | #define RESERVE_CONFIG_BUFFER(buffer,len) char buffer[len] |
Bernhard Reutner-Fischer | 421d9e5 | 2006-04-03 16:39:31 +0000 | [diff] [blame] | 302 | #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char buffer[len] |
| 303 | #define RELEASE_CONFIG_BUFFER(buffer) ((void)0) |
| 304 | #else |
Denis Vlasenko | b5a122b | 2006-12-30 14:46:51 +0000 | [diff] [blame] | 305 | #if ENABLE_FEATURE_BUFFERS_GO_IN_BSS |
Bernhard Reutner-Fischer | 421d9e5 | 2006-04-03 16:39:31 +0000 | [diff] [blame] | 306 | #define RESERVE_CONFIG_BUFFER(buffer,len) static char buffer[len] |
| 307 | #define RESERVE_CONFIG_UBUFFER(buffer,len) static unsigned char buffer[len] |
| 308 | #define RELEASE_CONFIG_BUFFER(buffer) ((void)0) |
| 309 | #else |
Denis Vlasenko | bbd695d | 2007-04-08 10:52:28 +0000 | [diff] [blame] | 310 | #define RESERVE_CONFIG_BUFFER(buffer,len) char *buffer = xmalloc(len) |
| 311 | #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char *buffer = xmalloc(len) |
| 312 | #define RELEASE_CONFIG_BUFFER(buffer) free(buffer) |
Bernhard Reutner-Fischer | 421d9e5 | 2006-04-03 16:39:31 +0000 | [diff] [blame] | 313 | #endif |
| 314 | #endif |
| 315 | |
Denis Vlasenko | fad2b86 | 2007-05-31 22:16:38 +0000 | [diff] [blame] | 316 | #if defined(__GLIBC__) |
| 317 | /* glibc uses __errno_location() to get a ptr to errno */ |
| 318 | /* We can just memorize it once - no multithreading in busybox :) */ |
| 319 | extern int *const bb_errno; |
| 320 | #undef errno |
| 321 | #define errno (*bb_errno) |
| 322 | #endif |
| 323 | |
Denys Vlasenko | 9ff50b8 | 2010-10-18 11:40:26 +0200 | [diff] [blame] | 324 | #if !(ULONG_MAX > 0xffffffff) |
| 325 | /* Only 32-bit CPUs need this, 64-bit ones use inlined version */ |
| 326 | uint64_t bb_bswap_64(uint64_t x) FAST_FUNC; |
| 327 | #endif |
| 328 | |
Denis Vlasenko | ce13b76 | 2008-06-29 02:25:53 +0000 | [diff] [blame] | 329 | unsigned long long monotonic_ns(void) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 330 | unsigned long long monotonic_us(void) FAST_FUNC; |
Denys Vlasenko | f2c8aa6 | 2010-01-12 12:52:30 +0100 | [diff] [blame] | 331 | unsigned long long monotonic_ms(void) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 332 | unsigned monotonic_sec(void) FAST_FUNC; |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 333 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 334 | extern void chomp(char *s) FAST_FUNC; |
| 335 | extern void trim(char *s) FAST_FUNC; |
| 336 | extern char *skip_whitespace(const char *) FAST_FUNC; |
| 337 | extern char *skip_non_whitespace(const char *) FAST_FUNC; |
Denys Vlasenko | f8d8aa1 | 2010-04-06 18:50:05 +0200 | [diff] [blame] | 338 | extern char *skip_dev_pfx(const char *tty_name) FAST_FUNC; |
| 339 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 340 | extern char *strrstr(const char *haystack, const char *needle) FAST_FUNC; |
Paul Fox | 0b62158 | 2005-08-09 19:38:05 +0000 | [diff] [blame] | 341 | |
Denis Vlasenko | 6ef06ee | 2007-03-14 22:06:01 +0000 | [diff] [blame] | 342 | //TODO: supply a pointer to char[11] buffer (avoid statics)? |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 343 | extern const char *bb_mode_string(mode_t mode) FAST_FUNC; |
Denys Vlasenko | f282c6b | 2011-12-18 03:27:46 +0100 | [diff] [blame] | 344 | extern int is_directory(const char *name, int followLinks) FAST_FUNC; |
Denis Vlasenko | b9ad75f | 2008-03-28 17:49:31 +0000 | [diff] [blame] | 345 | 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] | 346 | FILEUTILS_PRESERVE_STATUS = 1 << 0, /* -p */ |
| 347 | FILEUTILS_DEREFERENCE = 1 << 1, /* !-d */ |
| 348 | FILEUTILS_RECUR = 1 << 2, /* -R */ |
| 349 | FILEUTILS_FORCE = 1 << 3, /* -f */ |
| 350 | FILEUTILS_INTERACTIVE = 1 << 4, /* -i */ |
| 351 | FILEUTILS_MAKE_HARDLINK = 1 << 5, /* -l */ |
| 352 | FILEUTILS_MAKE_SOFTLINK = 1 << 6, /* -s */ |
| 353 | FILEUTILS_DEREF_SOFTLINK = 1 << 7, /* -L */ |
| 354 | FILEUTILS_DEREFERENCE_L0 = 1 << 8, /* -H */ |
Denis Vlasenko | b9ad75f | 2008-03-28 17:49:31 +0000 | [diff] [blame] | 355 | #if ENABLE_SELINUX |
Denys Vlasenko | a40f062 | 2010-01-15 22:05:07 +0100 | [diff] [blame] | 356 | FILEUTILS_PRESERVE_SECURITY_CONTEXT = 1 << 9, /* -c */ |
| 357 | FILEUTILS_SET_SECURITY_CONTEXT = 1 << 10, |
Denis Vlasenko | b9ad75f | 2008-03-28 17:49:31 +0000 | [diff] [blame] | 358 | #endif |
Natanael Copa | 02112d8 | 2012-05-22 17:11:46 +0200 | [diff] [blame] | 359 | FILEUTILS_IGNORE_CHMOD_ERR = 1 << 11, |
Denys Vlasenko | 17f8418 | 2014-05-19 16:23:50 +0200 | [diff] [blame] | 360 | /* -v */ |
| 361 | FILEUTILS_VERBOSE = (1 << 12) * ENABLE_FEATURE_VERBOSE, |
Denis Vlasenko | b9ad75f | 2008-03-28 17:49:31 +0000 | [diff] [blame] | 362 | }; |
Denys Vlasenko | a40f062 | 2010-01-15 22:05:07 +0100 | [diff] [blame] | 363 | #define FILEUTILS_CP_OPTSTR "pdRfilsLH" IF_SELINUX("c") |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 364 | extern int remove_file(const char *path, int flags) FAST_FUNC; |
Denis Vlasenko | b9ad75f | 2008-03-28 17:49:31 +0000 | [diff] [blame] | 365 | /* NB: without FILEUTILS_RECUR in flags, it will basically "cat" |
| 366 | * the source, not copy (unless "source" is a directory). |
| 367 | * This makes "cp /dev/null file" and "install /dev/null file" (!!!) |
| 368 | * work coreutils-compatibly. */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 369 | 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] | 370 | |
Denis Vlasenko | bbd695d | 2007-04-08 10:52:28 +0000 | [diff] [blame] | 371 | enum { |
Denis Vlasenko | d166f83 | 2007-07-05 00:12:55 +0000 | [diff] [blame] | 372 | ACTION_RECURSE = (1 << 0), |
| 373 | ACTION_FOLLOWLINKS = (1 << 1), |
| 374 | ACTION_FOLLOWLINKS_L0 = (1 << 2), |
| 375 | ACTION_DEPTHFIRST = (1 << 3), |
| 376 | /*ACTION_REVERSE = (1 << 4), - unused */ |
Denis Vlasenko | 6e69e42 | 2008-07-27 12:10:07 +0000 | [diff] [blame] | 377 | ACTION_QUIET = (1 << 5), |
Denys Vlasenko | 8f7a6d2 | 2009-09-29 11:07:04 +0200 | [diff] [blame] | 378 | ACTION_DANGLING_OK = (1 << 6), |
Denis Vlasenko | bbd695d | 2007-04-08 10:52:28 +0000 | [diff] [blame] | 379 | }; |
Denys Vlasenko | 8f7a6d2 | 2009-09-29 11:07:04 +0200 | [diff] [blame] | 380 | typedef uint8_t recurse_flags_t; |
Bernhard Reutner-Fischer | 3e816c1 | 2007-03-29 10:30:50 +0000 | [diff] [blame] | 381 | extern int recursive_action(const char *fileName, unsigned flags, |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 382 | int FAST_FUNC (*fileAction)(const char *fileName, struct stat* statbuf, void* userData, int depth), |
| 383 | int FAST_FUNC (*dirAction)(const char *fileName, struct stat* statbuf, void* userData, int depth), |
| 384 | void* userData, unsigned depth) FAST_FUNC; |
| 385 | extern int device_open(const char *device, int mode) FAST_FUNC; |
Denis Vlasenko | 85c2471 | 2008-03-17 09:04:04 +0000 | [diff] [blame] | 386 | enum { GETPTY_BUFSIZE = 16 }; /* more than enough for "/dev/ttyXXX" */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 387 | extern int xgetpty(char *line) FAST_FUNC; |
Denis Vlasenko | 2afd5ab | 2008-08-05 23:32:27 +0000 | [diff] [blame] | 388 | extern int get_console_fd_or_die(void) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 389 | extern void console_make_active(int fd, const int vt_num) FAST_FUNC; |
| 390 | extern char *find_block_device(const char *path) FAST_FUNC; |
Denis Vlasenko | 714701c | 2006-12-22 00:21:07 +0000 | [diff] [blame] | 391 | /* 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] | 392 | extern off_t bb_copyfd_eof(int fd1, int fd2) FAST_FUNC; |
| 393 | extern off_t bb_copyfd_size(int fd1, int fd2, off_t size) FAST_FUNC; |
| 394 | 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] | 395 | /* "short" copy can be detected by return value < size */ |
| 396 | /* this helper yells "short read!" if param is not -1 */ |
Denis Vlasenko | a60f84e | 2008-07-05 09:18:54 +0000 | [diff] [blame] | 397 | extern void complain_copyfd_and_die(off_t sz) NORETURN FAST_FUNC; |
Denys Vlasenko | e6df7e2 | 2011-05-23 03:39:08 +0200 | [diff] [blame] | 398 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 399 | extern char bb_process_escape_sequence(const char **ptr) FAST_FUNC; |
Denys Vlasenko | 5360059 | 2010-10-23 21:06:06 +0200 | [diff] [blame] | 400 | 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] | 401 | /* xxxx_strip version can modify its parameter: |
| 402 | * "/" -> "/" |
| 403 | * "abc" -> "abc" |
| 404 | * "abc/def" -> "def" |
| 405 | * "abc/def/" -> "def" !! |
| 406 | */ |
Denys Vlasenko | e6df7e2 | 2011-05-23 03:39:08 +0200 | [diff] [blame] | 407 | char *bb_get_last_path_component_strip(char *path) FAST_FUNC; |
Denis Vlasenko | 818322b | 2007-09-24 18:27:04 +0000 | [diff] [blame] | 408 | /* "abc/def/" -> "" and it never modifies 'path' */ |
Denys Vlasenko | e6df7e2 | 2011-05-23 03:39:08 +0200 | [diff] [blame] | 409 | char *bb_get_last_path_component_nostrip(const char *path) FAST_FUNC; |
| 410 | /* Simpler version: does not special case "/" string */ |
| 411 | const char *bb_basename(const char *name) FAST_FUNC; |
| 412 | /* NB: can violate const-ness (similarly to strchr) */ |
| 413 | char *last_char_is(const char *s, int c) FAST_FUNC; |
Denys Vlasenko | 1961aea | 2013-02-26 00:36:53 +0100 | [diff] [blame] | 414 | const char* endofname(const char *name) FAST_FUNC; |
Denys Vlasenko | 8dff01d | 2015-03-12 17:48:34 +0100 | [diff] [blame] | 415 | char *is_prefixed_with(const char *string, const char *key) FAST_FUNC; |
Bartosz Golaszewski | 7448b51 | 2015-08-25 16:36:43 +0200 | [diff] [blame] | 416 | char *is_suffixed_with(const char *string, const char *key) FAST_FUNC; |
Denis Vlasenko | cad04ef | 2007-03-25 23:21:05 +0000 | [diff] [blame] | 417 | |
Denys Vlasenko | d6e7672 | 2014-09-22 21:14:02 +0200 | [diff] [blame] | 418 | int ndelay_on(int fd) FAST_FUNC; |
| 419 | int ndelay_off(int fd) FAST_FUNC; |
Denys Vlasenko | e9a40e3 | 2011-01-24 00:29:55 +0100 | [diff] [blame] | 420 | void close_on_exec_on(int fd) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 421 | void xdup2(int, int) FAST_FUNC; |
| 422 | void xmove_fd(int, int) FAST_FUNC; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 423 | |
| 424 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 425 | DIR *xopendir(const char *path) FAST_FUNC; |
| 426 | DIR *warn_opendir(const char *path) FAST_FUNC; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 427 | |
Jérémie Koenig | fbedacf | 2010-03-26 19:08:53 +0100 | [diff] [blame] | 428 | char *xmalloc_realpath(const char *path) FAST_FUNC RETURNS_MALLOC; |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 429 | char *xmalloc_readlink(const char *path) FAST_FUNC RETURNS_MALLOC; |
| 430 | char *xmalloc_readlink_or_warn(const char *path) FAST_FUNC RETURNS_MALLOC; |
Denys Vlasenko | b57eee8 | 2009-11-04 17:54:17 +0100 | [diff] [blame] | 431 | /* !RETURNS_MALLOC: it's a realloc-like function */ |
| 432 | char *xrealloc_getcwd_or_warn(char *cwd) FAST_FUNC; |
Denis Vlasenko | 2856dab | 2007-04-01 01:18:20 +0000 | [diff] [blame] | 433 | |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 434 | char *xmalloc_follow_symlinks(const char *path) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | 473dae0 | 2007-04-11 07:04:23 +0000 | [diff] [blame] | 435 | |
Denis Vlasenko | 8e2cfec | 2008-03-12 23:19:35 +0000 | [diff] [blame] | 436 | |
Denis Vlasenko | 3319637 | 2008-02-23 01:25:38 +0000 | [diff] [blame] | 437 | enum { |
Denis Vlasenko | cf7cf62 | 2008-03-19 19:38:46 +0000 | [diff] [blame] | 438 | /* bb_signals(BB_FATAL_SIGS, handler) catches all signals which |
Denis Vlasenko | 3319637 | 2008-02-23 01:25:38 +0000 | [diff] [blame] | 439 | * otherwise would kill us, except for those resulting from bugs: |
| 440 | * SIGSEGV, SIGILL, SIGFPE. |
| 441 | * Other fatal signals not included (TODO?): |
| 442 | * SIGBUS Bus error (bad memory access) |
| 443 | * SIGPOLL Pollable event. Synonym of SIGIO |
| 444 | * SIGPROF Profiling timer expired |
| 445 | * SIGSYS Bad argument to routine |
| 446 | * SIGTRAP Trace/breakpoint trap |
Denis Vlasenko | d943af0 | 2008-03-30 15:56:38 +0000 | [diff] [blame] | 447 | * |
| 448 | * The only known arch with some of these sigs not fitting |
| 449 | * into 32 bits is parisc (SIGXCPU=33, SIGXFSZ=34, SIGSTKFLT=36). |
| 450 | * Dance around with long long to guard against that... |
Denis Vlasenko | 3319637 | 2008-02-23 01:25:38 +0000 | [diff] [blame] | 451 | */ |
Denis Vlasenko | d943af0 | 2008-03-30 15:56:38 +0000 | [diff] [blame] | 452 | BB_FATAL_SIGS = (int)(0 |
| 453 | + (1LL << SIGHUP) |
| 454 | + (1LL << SIGINT) |
| 455 | + (1LL << SIGTERM) |
| 456 | + (1LL << SIGPIPE) // Write to pipe with no readers |
| 457 | + (1LL << SIGQUIT) // Quit from keyboard |
| 458 | + (1LL << SIGABRT) // Abort signal from abort(3) |
| 459 | + (1LL << SIGALRM) // Timer signal from alarm(2) |
| 460 | + (1LL << SIGVTALRM) // Virtual alarm clock |
| 461 | + (1LL << SIGXCPU) // CPU time limit exceeded |
| 462 | + (1LL << SIGXFSZ) // File size limit exceeded |
| 463 | + (1LL << SIGUSR1) // Yes kids, these are also fatal! |
| 464 | + (1LL << SIGUSR2) |
| 465 | + 0), |
Denis Vlasenko | 3319637 | 2008-02-23 01:25:38 +0000 | [diff] [blame] | 466 | }; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 467 | void bb_signals(int sigs, void (*f)(int)) FAST_FUNC; |
Denis Vlasenko | 25591c3 | 2008-02-16 22:58:56 +0000 | [diff] [blame] | 468 | /* Unlike signal() and bb_signals, sets handler with sigaction() |
| 469 | * 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] | 470 | * will be blocked; syscalls will not be restarted: */ |
| 471 | void bb_signals_recursive_norestart(int sigs, void (*f)(int)) FAST_FUNC; |
Denis Vlasenko | 8e2cfec | 2008-03-12 23:19:35 +0000 | [diff] [blame] | 472 | /* syscalls like read() will be interrupted with EINTR: */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 473 | 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] | 474 | /* syscalls like read() won't be interrupted (though select/poll will be): */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 475 | void signal_SA_RESTART_empty_mask(int sig, void (*handler)(int)) FAST_FUNC; |
| 476 | void wait_for_any_sig(void) FAST_FUNC; |
Denis Vlasenko | a60f84e | 2008-07-05 09:18:54 +0000 | [diff] [blame] | 477 | void kill_myself_with_sig(int sig) NORETURN FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 478 | void sig_block(int sig) FAST_FUNC; |
| 479 | void sig_unblock(int sig) FAST_FUNC; |
Denis Vlasenko | 3f165fa | 2008-03-17 08:29:08 +0000 | [diff] [blame] | 480 | /* Will do sigaction(signum, act, NULL): */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 481 | int sigaction_set(int sig, const struct sigaction *act) FAST_FUNC; |
Denis Vlasenko | 3f165fa | 2008-03-17 08:29:08 +0000 | [diff] [blame] | 482 | /* SIG_BLOCK/SIG_UNBLOCK all signals: */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 483 | int sigprocmask_allsigs(int how) FAST_FUNC; |
Denis Vlasenko | 08ea11a | 2008-09-11 19:51:11 +0000 | [diff] [blame] | 484 | /* Standard handler which just records signo */ |
| 485 | extern smallint bb_got_signal; |
| 486 | void record_signo(int signo); /* not FAST_FUNC! */ |
Denis Vlasenko | 2856dab | 2007-04-01 01:18:20 +0000 | [diff] [blame] | 487 | |
Denis Vlasenko | 2856dab | 2007-04-01 01:18:20 +0000 | [diff] [blame] | 488 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 489 | void xsetgid(gid_t gid) FAST_FUNC; |
| 490 | void xsetuid(uid_t uid) FAST_FUNC; |
Ryan Mallon | 5906a5c | 2013-10-08 14:52:49 +0200 | [diff] [blame] | 491 | void xsetegid(gid_t egid) FAST_FUNC; |
| 492 | void xseteuid(uid_t euid) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 493 | void xchdir(const char *path) FAST_FUNC; |
| 494 | void xchroot(const char *path) FAST_FUNC; |
| 495 | void xsetenv(const char *key, const char *value) FAST_FUNC; |
Denis Vlasenko | 76ddc2e | 2008-12-30 05:05:31 +0000 | [diff] [blame] | 496 | void bb_unsetenv(const char *key) FAST_FUNC; |
Denys Vlasenko | dd8adde | 2010-06-24 05:00:50 +0200 | [diff] [blame] | 497 | void bb_unsetenv_and_free(char *key) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 498 | void xunlink(const char *pathname) FAST_FUNC; |
| 499 | void xstat(const char *pathname, struct stat *buf) FAST_FUNC; |
Denys Vlasenko | 8d3e225 | 2010-08-31 12:42:06 +0200 | [diff] [blame] | 500 | void xfstat(int fd, struct stat *buf, const char *errmsg) FAST_FUNC; |
Ryan Mallon | 5906a5c | 2013-10-08 14:52:49 +0200 | [diff] [blame] | 501 | int open3_or_warn(const char *pathname, int flags, int mode) FAST_FUNC; |
| 502 | int open_or_warn(const char *pathname, int flags) FAST_FUNC; |
| 503 | int xopen3(const char *pathname, int flags, int mode) FAST_FUNC; |
Denys Vlasenko | f2a8d5d | 2009-08-21 17:40:36 +0200 | [diff] [blame] | 504 | int xopen(const char *pathname, int flags) FAST_FUNC; |
Bernhard Reutner-Fischer | a483087 | 2009-10-26 23:27:08 +0100 | [diff] [blame] | 505 | int xopen_nonblocking(const char *pathname) FAST_FUNC; |
Ryan Mallon | 5906a5c | 2013-10-08 14:52:49 +0200 | [diff] [blame] | 506 | int xopen_as_uid_gid(const char *pathname, int flags, uid_t u, gid_t g) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 507 | int open_or_warn_stdin(const char *pathname) FAST_FUNC; |
Denys Vlasenko | e7b0a9e | 2010-08-22 05:39:15 +0200 | [diff] [blame] | 508 | int xopen_stdin(const char *pathname) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 509 | void xrename(const char *oldpath, const char *newpath) FAST_FUNC; |
| 510 | int rename_or_warn(const char *oldpath, const char *newpath) FAST_FUNC; |
| 511 | off_t xlseek(int fd, off_t offset, int whence) FAST_FUNC; |
Alexander Shishkin | 6722737 | 2010-10-22 13:27:16 +0200 | [diff] [blame] | 512 | int xmkstemp(char *template) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 513 | off_t fdlength(int fd) FAST_FUNC; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 514 | |
Denys Vlasenko | 40e7d25 | 2010-02-01 23:48:27 +0100 | [diff] [blame] | 515 | uoff_t FAST_FUNC get_volume_size_in_bytes(int fd, |
Denys Vlasenko | 982e87f | 2013-07-30 11:52:58 +0200 | [diff] [blame] | 516 | const char *override, |
| 517 | unsigned override_units, |
| 518 | int extend); |
Denys Vlasenko | 40e7d25 | 2010-02-01 23:48:27 +0100 | [diff] [blame] | 519 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 520 | void xpipe(int filedes[2]) FAST_FUNC; |
Denis Vlasenko | 3718832 | 2008-02-16 13:20:56 +0000 | [diff] [blame] | 521 | /* In this form code with pipes is much more readable */ |
| 522 | struct fd_pair { int rd; int wr; }; |
| 523 | #define piped_pair(pair) pipe(&((pair).rd)) |
| 524 | #define xpiped_pair(pair) xpipe(&((pair).rd)) |
| 525 | |
Denis Vlasenko | ed6a49c | 2007-11-18 22:56:25 +0000 | [diff] [blame] | 526 | /* Useful for having small structure members/global variables */ |
| 527 | typedef int8_t socktype_t; |
| 528 | typedef int8_t family_t; |
| 529 | struct BUG_too_small { |
| 530 | char BUG_socktype_t_too_small[(0 |
| 531 | | SOCK_STREAM |
| 532 | | SOCK_DGRAM |
| 533 | | SOCK_RDM |
| 534 | | SOCK_SEQPACKET |
| 535 | | SOCK_RAW |
| 536 | ) <= 127 ? 1 : -1]; |
| 537 | char BUG_family_t_too_small[(0 |
| 538 | | AF_UNSPEC |
| 539 | | AF_INET |
| 540 | | AF_INET6 |
| 541 | | AF_UNIX |
Mike Frysinger | 9412ec7 | 2008-02-07 22:41:33 +0000 | [diff] [blame] | 542 | #ifdef AF_PACKET |
Denis Vlasenko | ed6a49c | 2007-11-18 22:56:25 +0000 | [diff] [blame] | 543 | | AF_PACKET |
Mike Frysinger | 9412ec7 | 2008-02-07 22:41:33 +0000 | [diff] [blame] | 544 | #endif |
| 545 | #ifdef AF_NETLINK |
Denis Vlasenko | ed6a49c | 2007-11-18 22:56:25 +0000 | [diff] [blame] | 546 | | AF_NETLINK |
Mike Frysinger | 9412ec7 | 2008-02-07 22:41:33 +0000 | [diff] [blame] | 547 | #endif |
Denis Vlasenko | ed6a49c | 2007-11-18 22:56:25 +0000 | [diff] [blame] | 548 | /* | AF_DECnet */ |
| 549 | /* | AF_IPX */ |
| 550 | ) <= 127 ? 1 : -1]; |
| 551 | }; |
| 552 | |
| 553 | |
Denys Vlasenko | dc698bb | 2010-01-09 19:10:49 +0100 | [diff] [blame] | 554 | void parse_datestr(const char *date_str, struct tm *ptm) FAST_FUNC; |
| 555 | time_t validate_tm_time(const char *date_str, struct tm *ptm) FAST_FUNC; |
Denys Vlasenko | 8f2cb7a | 2013-03-29 12:30:33 +0100 | [diff] [blame] | 556 | char *strftime_HHMMSS(char *buf, unsigned len, time_t *tp) FAST_FUNC; |
| 557 | char *strftime_YYYYMMDDHHMMSS(char *buf, unsigned len, time_t *tp) FAST_FUNC; |
Denys Vlasenko | 73b71f3 | 2009-07-18 03:40:35 +0200 | [diff] [blame] | 558 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 559 | int xsocket(int domain, int type, int protocol) FAST_FUNC; |
| 560 | void xbind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen) FAST_FUNC; |
| 561 | void xlisten(int s, int backlog) FAST_FUNC; |
| 562 | 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] | 563 | 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] | 564 | socklen_t tolen) FAST_FUNC; |
Denys Vlasenko | c52cbea | 2015-08-24 19:48:03 +0200 | [diff] [blame] | 565 | |
| 566 | int setsockopt_int(int fd, int level, int optname, int optval) FAST_FUNC; |
| 567 | int setsockopt_1(int fd, int level, int optname) FAST_FUNC; |
| 568 | int setsockopt_SOL_SOCKET_int(int fd, int optname, int optval) FAST_FUNC; |
| 569 | int setsockopt_SOL_SOCKET_1(int fd, int optname) FAST_FUNC; |
Denis Vlasenko | 7f175cc | 2007-08-16 18:27:47 +0000 | [diff] [blame] | 570 | /* SO_REUSEADDR allows a server to rebind to an address that is already |
| 571 | * "in use" by old connections to e.g. previous server instance which is |
| 572 | * killed or crashed. Without it bind will fail until all such connections |
| 573 | * time out. Linux does not allow multiple live binds on same ip:port |
| 574 | * regardless of SO_REUSEADDR (unlike some other flavors of Unix). |
| 575 | * Turn it on before you call bind(). */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 576 | void setsockopt_reuseaddr(int fd) FAST_FUNC; /* On Linux this never fails. */ |
Denys Vlasenko | c52cbea | 2015-08-24 19:48:03 +0200 | [diff] [blame] | 577 | int setsockopt_keepalive(int fd) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 578 | int setsockopt_broadcast(int fd) FAST_FUNC; |
Denis Vlasenko | e537385 | 2008-12-10 11:12:16 +0000 | [diff] [blame] | 579 | int setsockopt_bindtodevice(int fd, const char *iface) FAST_FUNC; |
Denis Vlasenko | 85629f0 | 2007-01-22 09:36:41 +0000 | [diff] [blame] | 580 | /* NB: returns port in host byte order */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 581 | 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] | 582 | typedef struct len_and_sockaddr { |
Denis Vlasenko | 0850cda | 2007-02-07 23:20:32 +0000 | [diff] [blame] | 583 | socklen_t len; |
Denis Vlasenko | bbe5146 | 2007-01-10 20:19:56 +0000 | [diff] [blame] | 584 | union { |
| 585 | struct sockaddr sa; |
| 586 | struct sockaddr_in sin; |
| 587 | #if ENABLE_FEATURE_IPV6 |
| 588 | struct sockaddr_in6 sin6; |
| 589 | #endif |
Bernhard Reutner-Fischer | 8c69afd | 2008-01-29 10:33:34 +0000 | [diff] [blame] | 590 | } u; |
Denis Vlasenko | bbe5146 | 2007-01-10 20:19:56 +0000 | [diff] [blame] | 591 | } len_and_sockaddr; |
Denis Vlasenko | 992e05b | 2007-04-03 01:13:04 +0000 | [diff] [blame] | 592 | enum { |
Denis Vlasenko | 4e6d511 | 2008-03-12 22:14:34 +0000 | [diff] [blame] | 593 | LSA_LEN_SIZE = offsetof(len_and_sockaddr, u), |
Denis Vlasenko | 992e05b | 2007-04-03 01:13:04 +0000 | [diff] [blame] | 594 | LSA_SIZEOF_SA = sizeof( |
| 595 | union { |
| 596 | struct sockaddr sa; |
| 597 | struct sockaddr_in sin; |
| 598 | #if ENABLE_FEATURE_IPV6 |
| 599 | struct sockaddr_in6 sin6; |
| 600 | #endif |
| 601 | } |
| 602 | ) |
| 603 | }; |
Denis Vlasenko | 5c51a7c | 2007-06-05 20:08:11 +0000 | [diff] [blame] | 604 | /* Create stream socket, and allocate suitable lsa. |
| 605 | * (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] | 606 | * af == AF_UNSPEC will result in trying to create IPv6 socket, |
Denys Vlasenko | b1278a3 | 2009-11-24 16:03:47 +0100 | [diff] [blame] | 607 | * and if kernel doesn't support it, fall back to IPv4. |
| 608 | * This is useful if you plan to bind to resulting local lsa. |
Denis Vlasenko | 5c51a7c | 2007-06-05 20:08:11 +0000 | [diff] [blame] | 609 | */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 610 | int xsocket_type(len_and_sockaddr **lsap, int af, int sock_type) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 611 | int xsocket_stream(len_and_sockaddr **lsap) FAST_FUNC; |
Denis Vlasenko | 729bd9e | 2007-04-02 12:37:28 +0000 | [diff] [blame] | 612 | /* Create server socket bound to bindaddr:port. bindaddr can be NULL, |
Denis Vlasenko | 8e9ccba | 2007-01-11 16:50:23 +0000 | [diff] [blame] | 613 | * numeric IP ("N.N.N.N") or numeric IPv6 address, |
| 614 | * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT"). |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 615 | * Only if there is no suffix, port argument is used */ |
Denis Vlasenko | 7f175cc | 2007-08-16 18:27:47 +0000 | [diff] [blame] | 616 | /* NB: these set SO_REUSEADDR before bind */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 617 | int create_and_bind_stream_or_die(const char *bindaddr, int port) FAST_FUNC; |
| 618 | 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] | 619 | /* Create client TCP socket connected to peer:port. Peer cannot be NULL. |
| 620 | * Peer can be numeric IP ("N.N.N.N"), numeric IPv6 address or hostname, |
| 621 | * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT"). |
| 622 | * If there is no suffix, port argument is used */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 623 | 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] | 624 | /* Connect to peer identified by lsa */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 625 | int xconnect_stream(const len_and_sockaddr *lsa) FAST_FUNC; |
Denis Vlasenko | 73c571a | 2009-03-09 00:12:37 +0000 | [diff] [blame] | 626 | /* Get local address of bound or accepted socket */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 627 | len_and_sockaddr *get_sock_lsa(int fd) FAST_FUNC RETURNS_MALLOC; |
Denys Vlasenko | f6916db | 2010-04-06 17:43:29 +0200 | [diff] [blame] | 628 | /* Get remote address of connected or accepted socket */ |
| 629 | len_and_sockaddr *get_peer_lsa(int fd) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | bbe5146 | 2007-01-10 20:19:56 +0000 | [diff] [blame] | 630 | /* Return malloc'ed len_and_sockaddr with socket address of host:port |
| 631 | * Currently will return IPv4 or IPv6 sockaddrs only |
| 632 | * (depending on host), but in theory nothing prevents e.g. |
Denis Vlasenko | 5870ad9 | 2007-02-04 02:39:55 +0000 | [diff] [blame] | 633 | * UNIX socket address being returned, IPX sockaddr etc... |
| 634 | * On error does bb_error_msg and returns NULL */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 635 | 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] | 636 | /* Version which dies on error */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 637 | len_and_sockaddr* xhost2sockaddr(const char *host, int port) FAST_FUNC RETURNS_MALLOC; |
| 638 | 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] | 639 | /* Same, useful if you want to force family (e.g. IPv6) */ |
Denis Vlasenko | 4e6d511 | 2008-03-12 22:14:34 +0000 | [diff] [blame] | 640 | #if !ENABLE_FEATURE_IPV6 |
| 641 | #define host_and_af2sockaddr(host, port, af) host2sockaddr((host), (port)) |
| 642 | #define xhost_and_af2sockaddr(host, port, af) xhost2sockaddr((host), (port)) |
| 643 | #else |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 644 | len_and_sockaddr* host_and_af2sockaddr(const char *host, int port, sa_family_t af) FAST_FUNC RETURNS_MALLOC; |
| 645 | 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] | 646 | #endif |
Denis Vlasenko | 7f175cc | 2007-08-16 18:27:47 +0000 | [diff] [blame] | 647 | /* 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] | 648 | * otherwise no-op. Useful for ftp. |
Denis Vlasenko | 8e9ccba | 2007-01-11 16:50:23 +0000 | [diff] [blame] | 649 | * NB: does NOT do htons() internally, just direct assignment. */ |
Denys Vlasenko | ca18311 | 2011-04-07 17:52:20 +0200 | [diff] [blame] | 650 | void set_nport(struct sockaddr *sa, unsigned port) FAST_FUNC; |
Denis Vlasenko | 85629f0 | 2007-01-22 09:36:41 +0000 | [diff] [blame] | 651 | /* 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] | 652 | int get_nport(const struct sockaddr *sa) FAST_FUNC; |
Denis Vlasenko | 9adc6ce | 2007-01-22 22:45:27 +0000 | [diff] [blame] | 653 | /* Reverse DNS. Returns NULL on failure. */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 654 | char* xmalloc_sockaddr2host(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | 9adc6ce | 2007-01-22 22:45:27 +0000 | [diff] [blame] | 655 | /* This one doesn't append :PORTNUM */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 656 | char* xmalloc_sockaddr2host_noport(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | 9adc6ce | 2007-01-22 22:45:27 +0000 | [diff] [blame] | 657 | /* This one also doesn't fall back to dotted IP (returns NULL) */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 658 | char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | 448f024 | 2007-01-22 22:43:05 +0000 | [diff] [blame] | 659 | /* inet_[ap]ton on steroids */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 660 | char* xmalloc_sockaddr2dotted(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC; |
| 661 | char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | 85629f0 | 2007-01-22 09:36:41 +0000 | [diff] [blame] | 662 | // "old" (ipv4 only) API |
Denis Vlasenko | 729bd9e | 2007-04-02 12:37:28 +0000 | [diff] [blame] | 663 | // users: traceroute.c hostname.c - use _list_ of all IPs |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 664 | struct hostent *xgethostbyname(const char *name) FAST_FUNC; |
Denis Vlasenko | 729bd9e | 2007-04-02 12:37:28 +0000 | [diff] [blame] | 665 | // Also mount.c and inetd.c are using gethostbyname(), |
Denis Vlasenko | e991303 | 2007-02-04 02:41:57 +0000 | [diff] [blame] | 666 | // + inet_common.c has additional IPv4-only stuff |
Denis Vlasenko | c8717cd | 2006-11-22 16:10:39 +0000 | [diff] [blame] | 667 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 668 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 669 | void socket_want_pktinfo(int fd) FAST_FUNC; |
Denis Vlasenko | 29fe726 | 2007-04-05 20:26:28 +0000 | [diff] [blame] | 670 | 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] | 671 | const struct sockaddr *to, |
| 672 | const struct sockaddr *from, |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 673 | socklen_t tolen) FAST_FUNC; |
Denis Vlasenko | 29fe726 | 2007-04-05 20:26:28 +0000 | [diff] [blame] | 674 | 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] | 675 | struct sockaddr *from, |
| 676 | struct sockaddr *to, |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 677 | socklen_t sa_size) FAST_FUNC; |
Denis Vlasenko | 29fe726 | 2007-04-05 20:26:28 +0000 | [diff] [blame] | 678 | |
Baruch Siach | e8f3633 | 2011-09-07 17:52:37 +0200 | [diff] [blame] | 679 | uint16_t inet_cksum(uint16_t *addr, int len) FAST_FUNC; |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 680 | |
| 681 | char *xstrdup(const char *s) FAST_FUNC RETURNS_MALLOC; |
| 682 | char *xstrndup(const char *s, int n) FAST_FUNC RETURNS_MALLOC; |
Ron Yorston | d840c5d | 2015-07-19 23:05:20 +0200 | [diff] [blame] | 683 | void *xmemdup(const void *s, int n) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | 0f293b9 | 2008-07-22 20:16:55 +0000 | [diff] [blame] | 684 | void overlapping_strcpy(char *dst, const char *src) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 685 | 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] | 686 | char *strncpy_IFNAMSIZ(char *dst, const char *src) FAST_FUNC; |
Denys Vlasenko | 6f06890 | 2014-02-27 11:17:06 +0100 | [diff] [blame] | 687 | unsigned count_strstr(const char *str, const char *sub) FAST_FUNC; |
| 688 | char *xmalloc_substitute_string(const char *src, int count, const char *sub, const char *repl) FAST_FUNC; |
Denis Vlasenko | 4daad90 | 2007-09-27 10:20:47 +0000 | [diff] [blame] | 689 | /* 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] | 690 | * But potentially slow, don't use in one-billion-times loops */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 691 | int bb_putchar(int ch) FAST_FUNC; |
Denys Vlasenko | 19ced5c | 2010-06-06 21:53:09 +0200 | [diff] [blame] | 692 | /* Note: does not use stdio, writes to fd 2 directly */ |
| 693 | int bb_putchar_stderr(char ch) FAST_FUNC; |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 694 | char *xasprintf(const char *format, ...) __attribute__ ((format(printf, 1, 2))) FAST_FUNC RETURNS_MALLOC; |
Denys Vlasenko | e52da55 | 2015-10-09 17:59:56 +0200 | [diff] [blame] | 695 | char *auto_string(char *str) FAST_FUNC; |
Denis Vlasenko | 9f73944 | 2006-12-16 23:49:13 +0000 | [diff] [blame] | 696 | // gcc-4.1.1 still isn't good enough at optimizing it |
| 697 | // (+200 bytes compared to macro) |
Denis Vlasenko | 3ad5d0c | 2007-06-12 20:54:54 +0000 | [diff] [blame] | 698 | //static ALWAYS_INLINE |
Denis Vlasenko | 9f73944 | 2006-12-16 23:49:13 +0000 | [diff] [blame] | 699 | //int LONE_DASH(const char *s) { return s[0] == '-' && !s[1]; } |
Denis Vlasenko | 3ad5d0c | 2007-06-12 20:54:54 +0000 | [diff] [blame] | 700 | //static ALWAYS_INLINE |
Denis Vlasenko | 9f73944 | 2006-12-16 23:49:13 +0000 | [diff] [blame] | 701 | //int NOT_LONE_DASH(const char *s) { return s[0] != '-' || s[1]; } |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 702 | #define LONE_DASH(s) ((s)[0] == '-' && !(s)[1]) |
Denis Vlasenko | 9f73944 | 2006-12-16 23:49:13 +0000 | [diff] [blame] | 703 | #define NOT_LONE_DASH(s) ((s)[0] != '-' || (s)[1]) |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 704 | #define LONE_CHAR(s,c) ((s)[0] == (c) && !(s)[1]) |
Denis Vlasenko | bf66fbc | 2006-12-21 13:23:14 +0000 | [diff] [blame] | 705 | #define NOT_LONE_CHAR(s,c) ((s)[0] != (c) || (s)[1]) |
Denis Vlasenko | 16abcd9 | 2007-04-13 23:59:52 +0000 | [diff] [blame] | 706 | #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] | 707 | |
Denys Vlasenko | d8528b8 | 2010-01-31 05:15:38 +0100 | [diff] [blame] | 708 | typedef struct uni_stat_t { |
| 709 | unsigned byte_count; |
| 710 | unsigned unicode_count; |
| 711 | unsigned unicode_width; |
| 712 | } uni_stat_t; |
| 713 | /* Returns a string with unprintable chars replaced by '?' or |
| 714 | * SUBST_WCHAR. This function is unicode-aware. */ |
| 715 | const char* FAST_FUNC printable_string(uni_stat_t *stats, const char *str); |
| 716 | /* Prints unprintable char ch as ^C or M-c to file |
| 717 | * (M-c is used only if ch is ORed with PRINTABLE_META), |
| 718 | * else it is printed as-is (except for ch = 0x9b) */ |
| 719 | enum { PRINTABLE_META = 0x100 }; |
| 720 | void fputc_printable(int ch, FILE *file) FAST_FUNC; |
Bartosz Golaszewski | 79c618c | 2013-07-30 06:29:42 +0200 | [diff] [blame] | 721 | /* Return a string that is the printable representation of character ch. |
| 722 | * Buffer must hold at least four characters. */ |
Denys Vlasenko | bfa6ed1 | 2013-07-30 11:41:58 +0200 | [diff] [blame] | 723 | enum { |
| 724 | VISIBLE_ENDLINE = 1 << 0, |
| 725 | VISIBLE_SHOW_TABS = 1 << 1, |
| 726 | }; |
Bartosz Golaszewski | 79c618c | 2013-07-30 06:29:42 +0200 | [diff] [blame] | 727 | void visible(unsigned ch, char *buf, int flags) FAST_FUNC; |
Denys Vlasenko | d8528b8 | 2010-01-31 05:15:38 +0100 | [diff] [blame] | 728 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 729 | /* dmalloc will redefine these to it's own implementation. It is safe |
| 730 | * to have the prototypes here unconditionally. */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 731 | void *malloc_or_warn(size_t size) FAST_FUNC RETURNS_MALLOC; |
| 732 | void *xmalloc(size_t size) FAST_FUNC RETURNS_MALLOC; |
| 733 | void *xzalloc(size_t size) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | deeed59 | 2008-07-08 05:14:36 +0000 | [diff] [blame] | 734 | void *xrealloc(void *old, size_t size) FAST_FUNC; |
Denys Vlasenko | 1671424 | 2011-09-21 01:59:15 +0200 | [diff] [blame] | 735 | /* After v = xrealloc_vector(v, SHIFT, idx) it's ok to use |
Denis Vlasenko | 2784228 | 2008-08-04 13:20:36 +0000 | [diff] [blame] | 736 | * at least v[idx] and v[idx+1], for all idx values. |
Denys Vlasenko | 1671424 | 2011-09-21 01:59:15 +0200 | [diff] [blame] | 737 | * SHIFT specifies how many new elements are added (1:2, 2:4, ..., 8:256...) |
| 738 | * when all elements are used up. New elements are zeroed out. |
| 739 | * xrealloc_vector(v, SHIFT, idx) *MUST* be called with consecutive IDXs - |
| 740 | * skipping an index is a bad bug - it may miss a realloc! |
| 741 | */ |
Denis Vlasenko | deeed59 | 2008-07-08 05:14:36 +0000 | [diff] [blame] | 742 | #define xrealloc_vector(vector, shift, idx) \ |
| 743 | xrealloc_vector_helper((vector), (sizeof((vector)[0]) << 8) + (shift), (idx)) |
| 744 | void* xrealloc_vector_helper(void *vector, unsigned sizeof_and_shift, int idx) FAST_FUNC; |
| 745 | |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 746 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 747 | extern ssize_t safe_read(int fd, void *buf, size_t count) FAST_FUNC; |
Ron Yorston | 61d6ae2 | 2015-04-19 10:50:25 +0100 | [diff] [blame] | 748 | extern ssize_t nonblock_immune_read(int fd, void *buf, size_t count) FAST_FUNC; |
Denis Vlasenko | 394eebe | 2008-02-25 20:30:24 +0000 | [diff] [blame] | 749 | // NB: will return short read on error, not -1, |
| 750 | // if some data was read before error occurred |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 751 | extern ssize_t full_read(int fd, void *buf, size_t count) FAST_FUNC; |
| 752 | extern void xread(int fd, void *buf, size_t count) FAST_FUNC; |
| 753 | extern unsigned char xread_char(int fd) FAST_FUNC; |
Denis Vlasenko | b605272 | 2008-07-10 17:43:01 +0000 | [diff] [blame] | 754 | extern ssize_t read_close(int fd, void *buf, size_t maxsz) FAST_FUNC; |
| 755 | 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] | 756 | // Reads one line a-la fgets (but doesn't save terminating '\n'). |
| 757 | // 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] | 758 | // Bytes are appended to pfx (which must be malloced, or NULL). |
Denys Vlasenko | 80c5b68 | 2011-05-08 21:21:10 +0200 | [diff] [blame] | 759 | extern char *xmalloc_reads(int fd, size_t *maxsz_p) FAST_FUNC; |
Denis Vlasenko | 9f57cf6 | 2009-03-18 17:32:44 +0000 | [diff] [blame] | 760 | /* Reads block up to *maxsz_p (default: INT_MAX - 4095) */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 761 | 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] | 762 | /* 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] | 763 | 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] | 764 | /* Never returns NULL */ |
| 765 | extern void *xmalloc_xopen_read_close(const char *filename, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC; |
Denys Vlasenko | 5965507 | 2012-03-06 16:23:50 +0100 | [diff] [blame] | 766 | |
Denys Vlasenko | 04c1417 | 2014-11-26 15:17:59 +0100 | [diff] [blame] | 767 | #if defined(ARG_MAX) && (ARG_MAX >= 60*1024 || !defined(_SC_ARG_MAX)) |
| 768 | /* Use _constant_ maximum if: defined && (big enough || no variable one exists) */ |
Denys Vlasenko | f92f1d0 | 2014-06-22 13:54:40 +0200 | [diff] [blame] | 769 | # define bb_arg_max() ((unsigned)ARG_MAX) |
Denys Vlasenko | 04c1417 | 2014-11-26 15:17:59 +0100 | [diff] [blame] | 770 | #elif defined(_SC_ARG_MAX) |
| 771 | /* Else use variable one (a bit more expensive) */ |
Denys Vlasenko | f92f1d0 | 2014-06-22 13:54:40 +0200 | [diff] [blame] | 772 | unsigned bb_arg_max(void) FAST_FUNC; |
| 773 | #else |
Denys Vlasenko | 04c1417 | 2014-11-26 15:17:59 +0100 | [diff] [blame] | 774 | /* If all else fails */ |
Denys Vlasenko | f92f1d0 | 2014-06-22 13:54:40 +0200 | [diff] [blame] | 775 | # define bb_arg_max() ((unsigned)(32 * 1024)) |
| 776 | #endif |
Bartosz Golaszewski | 5d2e409 | 2014-06-22 14:01:13 +0200 | [diff] [blame] | 777 | unsigned bb_clk_tck(void) FAST_FUNC; |
Denys Vlasenko | f92f1d0 | 2014-06-22 13:54:40 +0200 | [diff] [blame] | 778 | |
Denys Vlasenko | 5965507 | 2012-03-06 16:23:50 +0100 | [diff] [blame] | 779 | #define SEAMLESS_COMPRESSION (0 \ |
| 780 | || ENABLE_FEATURE_SEAMLESS_XZ \ |
| 781 | || ENABLE_FEATURE_SEAMLESS_LZMA \ |
| 782 | || ENABLE_FEATURE_SEAMLESS_BZ2 \ |
| 783 | || ENABLE_FEATURE_SEAMLESS_GZ \ |
| 784 | || ENABLE_FEATURE_SEAMLESS_Z) |
| 785 | |
Denys Vlasenko | 8a6a2f9 | 2012-03-06 16:27:48 +0100 | [diff] [blame] | 786 | #if SEAMLESS_COMPRESSION |
Denys Vlasenko | 27653ad | 2010-05-06 14:19:19 +0000 | [diff] [blame] | 787 | /* Autodetects gzip/bzip2 formats. fd may be in the middle of the file! */ |
Denys Vlasenko | 640ce3d | 2014-02-02 02:06:38 +0100 | [diff] [blame] | 788 | extern int setup_unzip_on_fd(int fd, int fail_if_not_compressed) FAST_FUNC; |
Denis Vlasenko | b605272 | 2008-07-10 17:43:01 +0000 | [diff] [blame] | 789 | /* Autodetects .gz etc */ |
Denys Vlasenko | 640ce3d | 2014-02-02 02:06:38 +0100 | [diff] [blame] | 790 | extern int open_zipped(const char *fname, int fail_if_not_compressed) FAST_FUNC; |
Denys Vlasenko | b4c11c1 | 2014-12-07 00:44:00 +0100 | [diff] [blame] | 791 | extern void *xmalloc_open_zipped_read_close(const char *fname, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC; |
Denys Vlasenko | 8a6a2f9 | 2012-03-06 16:27:48 +0100 | [diff] [blame] | 792 | #else |
| 793 | # define setup_unzip_on_fd(...) (0) |
Denys Vlasenko | 640ce3d | 2014-02-02 02:06:38 +0100 | [diff] [blame] | 794 | # define open_zipped(fname, fail_if_not_compressed) open((fname), O_RDONLY); |
Denys Vlasenko | b4c11c1 | 2014-12-07 00:44:00 +0100 | [diff] [blame] | 795 | # define xmalloc_open_zipped_read_close(fname, maxsz_p) xmalloc_open_read_close((fname), (maxsz_p)) |
Denys Vlasenko | 8a6a2f9 | 2012-03-06 16:27:48 +0100 | [diff] [blame] | 796 | #endif |
Denis Vlasenko | ea62077 | 2006-10-14 02:23:43 +0000 | [diff] [blame] | 797 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 798 | 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] | 799 | // NB: will return short write on error, not -1, |
| 800 | // if some data was written before error occurred |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 801 | extern ssize_t full_write(int fd, const void *buf, size_t count) FAST_FUNC; |
| 802 | 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] | 803 | extern void xwrite_str(int fd, const char *str) FAST_FUNC; |
Denys Vlasenko | 729ecb8 | 2010-06-07 14:14:26 +0200 | [diff] [blame] | 804 | extern ssize_t full_write1_str(const char *str) FAST_FUNC; |
| 805 | extern ssize_t full_write2_str(const char *str) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 806 | 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] | 807 | |
Denys Vlasenko | dcd27ab | 2009-10-05 03:03:07 +0200 | [diff] [blame] | 808 | /* Close fd, but check for failures (some types of write errors) */ |
| 809 | extern void xclose(int fd) FAST_FUNC; |
| 810 | |
Denis Vlasenko | 1de0830 | 2006-10-26 23:32:43 +0000 | [diff] [blame] | 811 | /* 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] | 812 | extern void xprint_and_close_file(FILE *file) FAST_FUNC; |
Denis Vlasenko | 2132e02 | 2008-07-15 10:33:12 +0000 | [diff] [blame] | 813 | |
Denys Vlasenko | a1a4483 | 2011-06-17 03:37:43 +0200 | [diff] [blame] | 814 | /* Reads a line from a text file, up to a newline or NUL byte, inclusive. |
| 815 | * Returns malloc'ed char*. If end is NULL '\n' isn't considered |
| 816 | * end of line. If end isn't NULL, length of the chunk is stored in it. |
| 817 | * Returns NULL if EOF/error. |
| 818 | */ |
Denis Vlasenko | 2132e02 | 2008-07-15 10:33:12 +0000 | [diff] [blame] | 819 | 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] | 820 | /* Reads up to (and including) TERMINATING_STRING: */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 821 | 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] | 822 | /* Same, with limited max size, and returns the length (excluding NUL): */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 823 | 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] | 824 | /* Chops off TERMINATING_STRING from the end: */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 825 | 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] | 826 | /* Reads up to (and including) "\n" or NUL byte: */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 827 | extern char *xmalloc_fgets(FILE *file) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | ddec5af | 2006-10-26 23:25:17 +0000 | [diff] [blame] | 828 | /* Chops off '\n' from the end, unlike fgets: */ |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 829 | extern char *xmalloc_fgetline(FILE *file) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | 2132e02 | 2008-07-15 10:33:12 +0000 | [diff] [blame] | 830 | /* 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] | 831 | /* extern char *xmalloc_fgetline_fast(FILE *file) FAST_FUNC RETURNS_MALLOC; */ |
Denis Vlasenko | 2132e02 | 2008-07-15 10:33:12 +0000 | [diff] [blame] | 832 | |
Denys Vlasenko | a7ccdee | 2009-11-15 23:28:11 +0100 | [diff] [blame] | 833 | void die_if_ferror(FILE *file, const char *msg) FAST_FUNC; |
| 834 | void die_if_ferror_stdout(void) FAST_FUNC; |
| 835 | int fflush_all(void) FAST_FUNC; |
| 836 | void fflush_stdout_and_exit(int retval) NORETURN FAST_FUNC; |
| 837 | int fclose_if_not_stdin(FILE *file) FAST_FUNC; |
| 838 | FILE* xfopen(const char *filename, const char *mode) FAST_FUNC; |
Denis Vlasenko | ddec5af | 2006-10-26 23:25:17 +0000 | [diff] [blame] | 839 | /* Prints warning to stderr and returns NULL on failure: */ |
Denys Vlasenko | a7ccdee | 2009-11-15 23:28:11 +0100 | [diff] [blame] | 840 | FILE* fopen_or_warn(const char *filename, const char *mode) FAST_FUNC; |
Denis Vlasenko | ddec5af | 2006-10-26 23:25:17 +0000 | [diff] [blame] | 841 | /* "Opens" stdin if filename is special, else just opens file: */ |
Denys Vlasenko | a7ccdee | 2009-11-15 23:28:11 +0100 | [diff] [blame] | 842 | FILE* xfopen_stdin(const char *filename) FAST_FUNC; |
| 843 | FILE* fopen_or_warn_stdin(const char *filename) FAST_FUNC; |
| 844 | FILE* fopen_for_read(const char *path) FAST_FUNC; |
| 845 | FILE* xfopen_for_read(const char *path) FAST_FUNC; |
| 846 | FILE* fopen_for_write(const char *path) FAST_FUNC; |
| 847 | FILE* xfopen_for_write(const char *path) FAST_FUNC; |
| 848 | FILE* xfdopen_for_read(int fd) FAST_FUNC; |
| 849 | FILE* xfdopen_for_write(int fd) FAST_FUNC; |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 850 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 851 | int bb_pstrcmp(const void *a, const void *b) /* not FAST_FUNC! */; |
| 852 | void qsort_string_vector(char **sv, unsigned count) FAST_FUNC; |
Denis Vlasenko | fb29038 | 2008-03-02 12:51:26 +0000 | [diff] [blame] | 853 | |
Denis Vlasenko | 5d61e71 | 2007-09-27 10:09:59 +0000 | [diff] [blame] | 854 | /* Wrapper which restarts poll on EINTR or ENOMEM. |
| 855 | * On other errors complains [perror("poll")] and returns. |
| 856 | * Warning! May take (much) longer than timeout_ms to return! |
| 857 | * 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] | 858 | 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] | 859 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 860 | char *safe_gethostname(void) FAST_FUNC; |
Denis Vlasenko | 6f1713f | 2008-02-25 23:23:58 +0000 | [diff] [blame] | 861 | |
Bernhard Reutner-Fischer | 8b1fab2 | 2007-04-10 09:38:07 +0000 | [diff] [blame] | 862 | /* Convert each alpha char in str to lower-case */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 863 | char* str_tolower(char *str) FAST_FUNC; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 864 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 865 | char *utoa(unsigned n) FAST_FUNC; |
| 866 | char *itoa(int n) FAST_FUNC; |
Denis Vlasenko | 10457b9 | 2007-03-27 22:01:31 +0000 | [diff] [blame] | 867 | /* Returns a pointer past the formatted number, does NOT null-terminate */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 868 | char *utoa_to_buf(unsigned n, char *buf, unsigned buflen) FAST_FUNC; |
| 869 | char *itoa_to_buf(int n, char *buf, unsigned buflen) FAST_FUNC; |
Denis Vlasenko | 56ea65c | 2008-01-06 03:26:53 +0000 | [diff] [blame] | 870 | /* Intelligent formatters of bignums */ |
Denys Vlasenko | a407cf7 | 2013-09-06 12:53:14 +0200 | [diff] [blame] | 871 | char *smart_ulltoa4(unsigned long long ul, char buf[4], const char *scale) FAST_FUNC; |
| 872 | char *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] | 873 | /* If block_size == 0, display size without fractional part, |
| 874 | * else display (size * block_size) with one decimal digit. |
Denys Vlasenko | 9c3b84a | 2010-01-18 01:55:00 +0100 | [diff] [blame] | 875 | * 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] | 876 | * else divide by display_unit and do not use suffix. */ |
Denys Vlasenko | 9c3b84a | 2010-01-18 01:55:00 +0100 | [diff] [blame] | 877 | #define HUMAN_READABLE_MAX_WIDTH 7 /* "1024.0G" */ |
| 878 | #define HUMAN_READABLE_MAX_WIDTH_STR "7" |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 879 | //TODO: provide pointer to buf (avoid statics)? |
| 880 | const char *make_human_readable_str(unsigned long long size, |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 881 | unsigned long block_size, unsigned long display_unit) FAST_FUNC; |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 882 | /* Put a string of hex bytes ("1b2e66fe"...), return advanced pointer */ |
Denys Vlasenko | 1f56e51 | 2011-10-19 22:40:35 +0200 | [diff] [blame] | 883 | char *bin2hex(char *dst, const char *src, int count) FAST_FUNC; |
Denys Vlasenko | 4836331 | 2010-04-04 15:29:32 +0200 | [diff] [blame] | 884 | /* Reverse */ |
Denys Vlasenko | 1f56e51 | 2011-10-19 22:40:35 +0200 | [diff] [blame] | 885 | char* hex2bin(char *dst, const char *src, int count) FAST_FUNC; |
Rob Landley | c5b1d4d | 2006-03-13 15:45:16 +0000 | [diff] [blame] | 886 | |
Vladimir Dronnikov | db67a20 | 2009-10-15 09:24:25 +0200 | [diff] [blame] | 887 | /* Generate a UUID */ |
| 888 | void generate_uuid(uint8_t *buf) FAST_FUNC; |
| 889 | |
Denis Vlasenko | 1bab1de | 2007-07-27 15:30:39 +0000 | [diff] [blame] | 890 | /* Last element is marked by mult == 0 */ |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 891 | struct suffix_mult { |
Denis Vlasenko | f868963 | 2007-07-27 15:06:25 +0000 | [diff] [blame] | 892 | char suffix[4]; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 893 | unsigned mult; |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 894 | }; |
Denys Vlasenko | c72b43c | 2013-07-13 23:49:45 +0200 | [diff] [blame] | 895 | extern const struct suffix_mult bkm_suffixes[]; |
| 896 | #define km_suffixes (bkm_suffixes + 1) |
Ari Sundholm | 8893023 | 2015-03-04 18:46:48 +0200 | [diff] [blame] | 897 | extern const struct suffix_mult cwbkMG_suffixes[]; |
Ari Sundholm | 911db16 | 2015-03-22 17:55:38 +0100 | [diff] [blame] | 898 | #define kMG_suffixes (cwbkMG_suffixes + 3) |
Denys Vlasenko | c72b43c | 2013-07-13 23:49:45 +0200 | [diff] [blame] | 899 | |
Denis Vlasenko | ed836cd | 2006-11-25 14:44:13 +0000 | [diff] [blame] | 900 | #include "xatonum.h" |
Denis Vlasenko | 1385899 | 2006-10-08 12:49:22 +0000 | [diff] [blame] | 901 | /* Specialized: */ |
Denys Vlasenko | 7783248 | 2010-08-12 14:14:45 +0200 | [diff] [blame] | 902 | |
Denis Vlasenko | 1385899 | 2006-10-08 12:49:22 +0000 | [diff] [blame] | 903 | /* Using xatoi() instead of naive atoi() is not always convenient - |
| 904 | * in many places people want *non-negative* values, but store them |
| 905 | * in signed int. Therefore we need this one: |
Denys Vlasenko | 7783248 | 2010-08-12 14:14:45 +0200 | [diff] [blame] | 906 | * dies if input is not in [0, INT_MAX] range. Also will reject '-0' etc. |
| 907 | * It should really be named xatoi_nonnegative (since it allows 0), |
| 908 | * but that would be too long. |
| 909 | */ |
| 910 | int xatoi_positive(const char *numstr) FAST_FUNC; |
| 911 | |
Denis Vlasenko | 1385899 | 2006-10-08 12:49:22 +0000 | [diff] [blame] | 912 | /* Useful for reading port numbers */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 913 | uint16_t xatou16(const char *numstr) FAST_FUNC; |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 914 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 915 | |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 916 | /* These parse entries in /etc/passwd and /etc/group. This is desirable |
| 917 | * 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] | 918 | * increases target size and is often not needed on embedded systems. */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 919 | long xuname2uid(const char *name) FAST_FUNC; |
| 920 | long xgroup2gid(const char *name) FAST_FUNC; |
Denis Vlasenko | 9a44c4f | 2006-12-28 05:44:47 +0000 | [diff] [blame] | 921 | /* wrapper: allows string to contain numeric uid or gid */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 922 | unsigned long get_ug_id(const char *s, long FAST_FUNC (*xname2id)(const char *)) FAST_FUNC; |
Denis Vlasenko | de59c0f | 2006-10-05 22:50:22 +0000 | [diff] [blame] | 923 | struct bb_uidgid_t { |
Denis Vlasenko | 150f402 | 2007-01-13 21:06:21 +0000 | [diff] [blame] | 924 | uid_t uid; |
| 925 | gid_t gid; |
Denis Vlasenko | de59c0f | 2006-10-05 22:50:22 +0000 | [diff] [blame] | 926 | }; |
Denys Vlasenko | 526d858 | 2015-10-19 04:27:17 +0200 | [diff] [blame] | 927 | /* always sets uid and gid; returns 0 on failure */ |
| 928 | int get_uidgid(struct bb_uidgid_t*, const char*) FAST_FUNC; |
| 929 | /* always sets uid and gid; exits on failure */ |
Bernhard Reutner-Fischer | d73cbd3 | 2008-07-21 14:41:33 +0000 | [diff] [blame] | 930 | void xget_uidgid(struct bb_uidgid_t*, const char*) FAST_FUNC; |
Denis Vlasenko | cce3858 | 2007-02-26 22:47:42 +0000 | [diff] [blame] | 931 | /* chown-like handling of "user[:[group]" */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 932 | 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] | 933 | struct passwd* xgetpwnam(const char *name) FAST_FUNC; |
Denis Vlasenko | 15437e3 | 2008-12-05 16:23:06 +0000 | [diff] [blame] | 934 | struct group* xgetgrnam(const char *name) FAST_FUNC; |
Denis Vlasenko | 0c68a87 | 2008-12-02 22:56:59 +0000 | [diff] [blame] | 935 | struct passwd* xgetpwuid(uid_t uid) FAST_FUNC; |
| 936 | struct group* xgetgrgid(gid_t gid) FAST_FUNC; |
| 937 | char* xuid2uname(uid_t uid) FAST_FUNC; |
| 938 | char* xgid2group(gid_t gid) FAST_FUNC; |
| 939 | char* uid2uname(uid_t uid) FAST_FUNC; |
| 940 | char* gid2group(gid_t gid) FAST_FUNC; |
Denys Vlasenko | 7d65abe | 2011-03-01 16:27:13 +0100 | [diff] [blame] | 941 | char* uid2uname_utoa(uid_t uid) FAST_FUNC; |
| 942 | char* gid2group_utoa(gid_t gid) FAST_FUNC; |
Denis Vlasenko | 2405ad6 | 2007-01-19 21:24:17 +0000 | [diff] [blame] | 943 | /* versions which cache results (useful for ps, ls etc) */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 944 | const char* get_cached_username(uid_t uid) FAST_FUNC; |
| 945 | const char* get_cached_groupname(gid_t gid) FAST_FUNC; |
| 946 | void clear_username_cache(void) FAST_FUNC; |
Denis Vlasenko | 2405ad6 | 2007-01-19 21:24:17 +0000 | [diff] [blame] | 947 | /* internally usernames are saved in fixed-sized char[] buffers */ |
Denys Vlasenko | 7d65abe | 2011-03-01 16:27:13 +0100 | [diff] [blame] | 948 | enum { USERNAME_MAX_SIZE = 32 - sizeof(uid_t) }; |
Denis Vlasenko | a7d6c8b | 2008-03-19 23:15:26 +0000 | [diff] [blame] | 949 | #if ENABLE_FEATURE_CHECK_NAMES |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 950 | void die_if_bad_username(const char* name) FAST_FUNC; |
Denis Vlasenko | a7d6c8b | 2008-03-19 23:15:26 +0000 | [diff] [blame] | 951 | #else |
| 952 | #define die_if_bad_username(name) ((void)(name)) |
| 953 | #endif |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 954 | |
Denys Vlasenko | 37f5bef | 2010-04-05 03:18:40 +0200 | [diff] [blame] | 955 | #if ENABLE_FEATURE_UTMP |
Denys Vlasenko | 3a41611 | 2010-04-05 22:10:38 +0200 | [diff] [blame] | 956 | void FAST_FUNC write_new_utmp(pid_t pid, int new_type, const char *tty_name, const char *username, const char *hostname); |
| 957 | void FAST_FUNC update_utmp(pid_t pid, int new_type, const char *tty_name, const char *username, const char *hostname); |
Denys Vlasenko | da92126 | 2015-01-05 15:37:58 +0100 | [diff] [blame] | 958 | void FAST_FUNC update_utmp_DEAD_PROCESS(pid_t pid); |
Denys Vlasenko | 37f5bef | 2010-04-05 03:18:40 +0200 | [diff] [blame] | 959 | #else |
Denys Vlasenko | 3a41611 | 2010-04-05 22:10:38 +0200 | [diff] [blame] | 960 | # define write_new_utmp(pid, new_type, tty_name, username, hostname) ((void)0) |
| 961 | # define update_utmp(pid, new_type, tty_name, username, hostname) ((void)0) |
Denys Vlasenko | da92126 | 2015-01-05 15:37:58 +0100 | [diff] [blame] | 962 | # define update_utmp_DEAD_PROCESS(pid) ((void)0) |
Denys Vlasenko | 37f5bef | 2010-04-05 03:18:40 +0200 | [diff] [blame] | 963 | #endif |
| 964 | |
Denys Vlasenko | b72baeb | 2011-02-02 18:38:57 +0100 | [diff] [blame] | 965 | |
Denys Vlasenko | e765b5a | 2014-05-02 17:15:58 +0200 | [diff] [blame] | 966 | int file_is_executable(const char *name) FAST_FUNC; |
| 967 | char *find_executable(const char *filename, char **PATHp) FAST_FUNC; |
| 968 | int executable_exists(const char *filename) FAST_FUNC; |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 969 | |
Denis Vlasenko | 7e0fbf9 | 2007-09-04 19:33:22 +0000 | [diff] [blame] | 970 | /* BB_EXECxx always execs (it's not doing NOFORK/NOEXEC stuff), |
| 971 | * but it may exec busybox and call applet instead of searching PATH. |
| 972 | */ |
Denis Vlasenko | 80d14be | 2007-04-10 23:03:30 +0000 | [diff] [blame] | 973 | #if ENABLE_FEATURE_PREFER_APPLETS |
Denys Vlasenko | c71b469 | 2011-02-02 03:28:56 +0100 | [diff] [blame] | 974 | int BB_EXECVP(const char *file, char *const argv[]) FAST_FUNC; |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 975 | #define BB_EXECLP(prog,cmd,...) \ |
Denys Vlasenko | c71b469 | 2011-02-02 03:28:56 +0100 | [diff] [blame] | 976 | do { \ |
| 977 | if (find_applet_by_name(prog) >= 0) \ |
| 978 | execlp(bb_busybox_exec_path, cmd, __VA_ARGS__); \ |
| 979 | execlp(prog, cmd, __VA_ARGS__); \ |
| 980 | } while (0) |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 981 | #else |
| 982 | #define BB_EXECVP(prog,cmd) execvp(prog,cmd) |
Denys Vlasenko | c71b469 | 2011-02-02 03:28:56 +0100 | [diff] [blame] | 983 | #define BB_EXECLP(prog,cmd,...) execlp(prog,cmd,__VA_ARGS__) |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 984 | #endif |
Pascal Bellard | 21e8e8d | 2010-07-04 00:57:03 +0200 | [diff] [blame] | 985 | int BB_EXECVP_or_die(char **argv) NORETURN FAST_FUNC; |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 986 | |
Pascal Bellard | 926031b | 2010-07-04 15:32:38 +0200 | [diff] [blame] | 987 | /* xvfork() can't be a _function_, return after vfork mangles stack |
| 988 | * in the parent. It must be a macro. */ |
| 989 | #define xvfork() \ |
| 990 | ({ \ |
| 991 | pid_t bb__xvfork_pid = vfork(); \ |
| 992 | if (bb__xvfork_pid < 0) \ |
| 993 | bb_perror_msg_and_die("vfork"); \ |
| 994 | bb__xvfork_pid; \ |
| 995 | }) |
| 996 | #if BB_MMU |
| 997 | pid_t xfork(void) FAST_FUNC; |
| 998 | #endif |
| 999 | |
Denys Vlasenko | 8531d76 | 2010-03-18 22:44:00 +0100 | [diff] [blame] | 1000 | /* NOMMU friendy fork+exec: */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1001 | pid_t spawn(char **argv) FAST_FUNC; |
| 1002 | pid_t xspawn(char **argv) FAST_FUNC; |
Denis Vlasenko | cd7001f | 2007-04-09 21:32:30 +0000 | [diff] [blame] | 1003 | |
Denis Vlasenko | 3854c5d | 2008-11-06 22:39:57 +0000 | [diff] [blame] | 1004 | 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] | 1005 | pid_t wait_any_nohang(int *wstat) FAST_FUNC; |
| 1006 | /* wait4pid: unlike waitpid, waits ONLY for one process. |
| 1007 | * Returns sig + 0x180 if child is killed by signal. |
Denis Vlasenko | cd7001f | 2007-04-09 21:32:30 +0000 | [diff] [blame] | 1008 | * It's safe to pass negative 'pids' from failed [v]fork - |
Denis Vlasenko | 473dae0 | 2007-04-11 07:04:23 +0000 | [diff] [blame] | 1009 | * wait4pid will return -1 (and will not clobber [v]fork's errno). |
Denis Vlasenko | cd7001f | 2007-04-09 21:32:30 +0000 | [diff] [blame] | 1010 | * IOW: rc = wait4pid(spawn(argv)); |
| 1011 | * if (rc < 0) bb_perror_msg("%s", argv[0]); |
Denys Vlasenko | 8531d76 | 2010-03-18 22:44:00 +0100 | [diff] [blame] | 1012 | * if (rc > 0) bb_error_msg("exit code: %d", rc & 0xff); |
Denis Vlasenko | cd7001f | 2007-04-09 21:32:30 +0000 | [diff] [blame] | 1013 | */ |
Denis Vlasenko | 3854c5d | 2008-11-06 22:39:57 +0000 | [diff] [blame] | 1014 | int wait4pid(pid_t pid) FAST_FUNC; |
Denys Vlasenko | 8531d76 | 2010-03-18 22:44:00 +0100 | [diff] [blame] | 1015 | /* Same as wait4pid(spawn(argv)), but with NOFORK/NOEXEC if configured: */ |
Denys Vlasenko | 8f24f98 | 2009-06-07 16:02:00 +0200 | [diff] [blame] | 1016 | int spawn_and_wait(char **argv) FAST_FUNC; |
Denis Vlasenko | 18e19f2 | 2007-04-28 16:43:18 +0000 | [diff] [blame] | 1017 | /* Does NOT check that applet is NOFORK, just blindly runs it */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1018 | int run_nofork_applet(int applet_no, char **argv) FAST_FUNC; |
Denis Vlasenko | cd7001f | 2007-04-09 21:32:30 +0000 | [diff] [blame] | 1019 | |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 1020 | /* Helpers for daemonization. |
Denis Vlasenko | 53091ec | 2007-03-26 13:35:09 +0000 | [diff] [blame] | 1021 | * |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 1022 | * bb_daemonize(flags) = daemonize, does not compile on NOMMU |
Denis Vlasenko | 53091ec | 2007-03-26 13:35:09 +0000 | [diff] [blame] | 1023 | * |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 1024 | * bb_daemonize_or_rexec(flags, argv) = daemonizes on MMU (and ignores argv), |
| 1025 | * rexec's itself on NOMMU with argv passed as command line. |
| 1026 | * Thus bb_daemonize_or_rexec may cause your <applet>_main() to be re-executed |
| 1027 | * from the start. (It will detect it and not reexec again second time). |
| 1028 | * You have to audit carefully that you don't do something twice as a result |
| 1029 | * (opening files/sockets, parsing config files etc...)! |
| 1030 | * |
| 1031 | * Both of the above will redirect fd 0,1,2 to /dev/null and drop ctty |
| 1032 | * (will do setsid()). |
| 1033 | * |
Pascal Bellard | 926031b | 2010-07-04 15:32:38 +0200 | [diff] [blame] | 1034 | * fork_or_rexec(argv) = bare-bones fork on MMU, |
Denis Vlasenko | 53091ec | 2007-03-26 13:35:09 +0000 | [diff] [blame] | 1035 | * "vfork + re-exec ourself" on NOMMU. No fd redirection, no setsid(). |
Denis Vlasenko | 83518d1 | 2009-03-20 22:17:13 +0000 | [diff] [blame] | 1036 | * On MMU ignores argv. |
Denis Vlasenko | 53091ec | 2007-03-26 13:35:09 +0000 | [diff] [blame] | 1037 | * |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 1038 | * Helper for network daemons in foreground mode: |
Denis Vlasenko | 53091ec | 2007-03-26 13:35:09 +0000 | [diff] [blame] | 1039 | * |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 1040 | * bb_sanitize_stdio() = make sure that fd 0,1,2 are opened by opening them |
| 1041 | * to /dev/null if they are not. |
| 1042 | */ |
| 1043 | enum { |
| 1044 | DAEMON_CHDIR_ROOT = 1, |
Denis Vlasenko | a1b16f4 | 2007-07-31 17:09:44 +0000 | [diff] [blame] | 1045 | DAEMON_DEVNULL_STDIO = 2, |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 1046 | DAEMON_CLOSE_EXTRA_FDS = 4, |
| 1047 | DAEMON_ONLY_SANITIZE = 8, /* internal use */ |
Peter Korsgaard | 743edac | 2011-11-09 19:44:37 +0100 | [diff] [blame] | 1048 | DAEMON_DOUBLE_FORK = 16, /* double fork to avoid controlling tty */ |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 1049 | }; |
Denis Vlasenko | 473dae0 | 2007-04-11 07:04:23 +0000 | [diff] [blame] | 1050 | #if BB_MMU |
Denis Vlasenko | 367960b | 2007-08-18 14:20:21 +0000 | [diff] [blame] | 1051 | enum { re_execed = 0 }; |
Pascal Bellard | 926031b | 2010-07-04 15:32:38 +0200 | [diff] [blame] | 1052 | # define fork_or_rexec(argv) xfork() |
Denis Vlasenko | 53091ec | 2007-03-26 13:35:09 +0000 | [diff] [blame] | 1053 | # define bb_daemonize_or_rexec(flags, argv) bb_daemonize_or_rexec(flags) |
| 1054 | # define bb_daemonize(flags) bb_daemonize_or_rexec(flags, bogus) |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 1055 | #else |
Pascal Bellard | 926031b | 2010-07-04 15:32:38 +0200 | [diff] [blame] | 1056 | extern bool re_execed; |
Denys Vlasenko | d2277e2 | 2011-11-22 17:19:26 +0100 | [diff] [blame] | 1057 | /* Note: re_exec() and fork_or_rexec() do argv[0][0] |= 0x80 on NOMMU! |
| 1058 | * _Parent_ needs to undo it if it doesn't want to have argv[0] mangled. |
| 1059 | */ |
Denis Vlasenko | a60f84e | 2008-07-05 09:18:54 +0000 | [diff] [blame] | 1060 | void re_exec(char **argv) NORETURN FAST_FUNC; |
Denis Vlasenko | 83518d1 | 2009-03-20 22:17:13 +0000 | [diff] [blame] | 1061 | pid_t fork_or_rexec(char **argv) FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1062 | int BUG_fork_is_unavailable_on_nommu(void) FAST_FUNC; |
| 1063 | int BUG_daemon_is_unavailable_on_nommu(void) FAST_FUNC; |
| 1064 | void BUG_bb_daemonize_is_unavailable_on_nommu(void) FAST_FUNC; |
Denis Vlasenko | 53091ec | 2007-03-26 13:35:09 +0000 | [diff] [blame] | 1065 | # define fork() BUG_fork_is_unavailable_on_nommu() |
Pascal Bellard | 926031b | 2010-07-04 15:32:38 +0200 | [diff] [blame] | 1066 | # define xfork() BUG_fork_is_unavailable_on_nommu() |
Denis Vlasenko | 53091ec | 2007-03-26 13:35:09 +0000 | [diff] [blame] | 1067 | # define daemon(a,b) BUG_daemon_is_unavailable_on_nommu() |
| 1068 | # define bb_daemonize(a) BUG_bb_daemonize_is_unavailable_on_nommu() |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 1069 | #endif |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1070 | void bb_daemonize_or_rexec(int flags, char **argv) FAST_FUNC; |
| 1071 | void bb_sanitize_stdio(void) FAST_FUNC; |
Denis Vlasenko | c9ca0a3 | 2008-02-18 11:08:33 +0000 | [diff] [blame] | 1072 | /* 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] | 1073 | int sanitize_env_if_suid(void) FAST_FUNC; |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 1074 | |
| 1075 | |
Denys Vlasenko | e992bae | 2009-11-28 15:18:53 +0100 | [diff] [blame] | 1076 | char* single_argv(char **argv) FAST_FUNC; |
Denis Vlasenko | 62a90cd | 2008-03-17 09:07:36 +0000 | [diff] [blame] | 1077 | extern const char *const bb_argv_dash[]; /* "-", NULL */ |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1078 | extern const char *opt_complementary; |
Denys Vlasenko | f3b92d3 | 2009-06-19 12:10:38 +0200 | [diff] [blame] | 1079 | #if ENABLE_LONG_OPTS || ENABLE_FEATURE_GETOPT_LONG |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 1080 | #define No_argument "\0" |
| 1081 | #define Required_argument "\001" |
| 1082 | #define Optional_argument "\002" |
| 1083 | extern const char *applet_long_options; |
Denis Vlasenko | c61852a | 2006-11-29 11:09:43 +0000 | [diff] [blame] | 1084 | #endif |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1085 | extern uint32_t option_mask32; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1086 | extern uint32_t getopt32(char **argv, const char *applet_opts, ...) FAST_FUNC; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1087 | |
| 1088 | |
Denys Vlasenko | 9be4702 | 2011-05-16 12:21:31 +0200 | [diff] [blame] | 1089 | /* Having next pointer as a first member allows easy creation |
| 1090 | * of "llist-compatible" structs, and using llist_FOO functions |
| 1091 | * on them. |
| 1092 | */ |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 1093 | typedef struct llist_t { |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 1094 | struct llist_t *link; |
Denys Vlasenko | 9be4702 | 2011-05-16 12:21:31 +0200 | [diff] [blame] | 1095 | char *data; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1096 | } llist_t; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1097 | void llist_add_to(llist_t **old_head, void *data) FAST_FUNC; |
| 1098 | void llist_add_to_end(llist_t **list_head, void *data) FAST_FUNC; |
| 1099 | void *llist_pop(llist_t **elm) FAST_FUNC; |
| 1100 | void llist_unlink(llist_t **head, llist_t *elm) FAST_FUNC; |
| 1101 | void llist_free(llist_t *elm, void (*freeit)(void *data)) FAST_FUNC; |
| 1102 | llist_t *llist_rev(llist_t *list) FAST_FUNC; |
Denis Vlasenko | 0b791d9 | 2009-04-13 20:52:00 +0000 | [diff] [blame] | 1103 | 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] | 1104 | /* BTW, surprisingly, changing API to |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 1105 | * llist_t *llist_add_to(llist_t *old_head, void *data) |
| 1106 | * etc does not result in smaller code... */ |
| 1107 | |
Denis Vlasenko | 80edead | 2007-08-02 22:31:05 +0000 | [diff] [blame] | 1108 | /* start_stop_daemon and udhcpc are special - they want |
| 1109 | * to create pidfiles regardless of FEATURE_PIDFILE */ |
Denis Vlasenko | 1caca34 | 2007-08-02 10:14:29 +0000 | [diff] [blame] | 1110 | #if ENABLE_FEATURE_PIDFILE || defined(WANT_PIDFILE) |
Denis Vlasenko | bb23c06 | 2007-08-15 20:05:37 +0000 | [diff] [blame] | 1111 | /* True only if we created pidfile which is *file*, not /dev/null etc */ |
| 1112 | extern smallint wrote_pidfile; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1113 | void write_pidfile(const char *path) FAST_FUNC; |
Denis Vlasenko | bb23c06 | 2007-08-15 20:05:37 +0000 | [diff] [blame] | 1114 | #define remove_pidfile(path) do { if (wrote_pidfile) unlink(path); } while (0) |
Denis Vlasenko | 10457b9 | 2007-03-27 22:01:31 +0000 | [diff] [blame] | 1115 | #else |
Denis Vlasenko | bb23c06 | 2007-08-15 20:05:37 +0000 | [diff] [blame] | 1116 | enum { wrote_pidfile = 0 }; |
| 1117 | #define write_pidfile(path) ((void)0) |
| 1118 | #define remove_pidfile(path) ((void)0) |
Denis Vlasenko | 10457b9 | 2007-03-27 22:01:31 +0000 | [diff] [blame] | 1119 | #endif |
| 1120 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1121 | enum { |
| 1122 | LOGMODE_NONE = 0, |
Denis Vlasenko | 1b97efd | 2007-08-17 19:18:06 +0000 | [diff] [blame] | 1123 | LOGMODE_STDIO = (1 << 0), |
| 1124 | LOGMODE_SYSLOG = (1 << 1) * ENABLE_FEATURE_SYSLOG, |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1125 | LOGMODE_BOTH = LOGMODE_SYSLOG + LOGMODE_STDIO, |
| 1126 | }; |
| 1127 | extern const char *msg_eol; |
Denys Vlasenko | 3dfe0ae | 2014-04-30 14:48:28 +0200 | [diff] [blame] | 1128 | extern smallint syslog_level; |
Denis Vlasenko | 04c99eb | 2007-04-07 00:44:31 +0000 | [diff] [blame] | 1129 | extern smallint logmode; |
Denys Vlasenko | 7aa6304 | 2010-09-01 16:04:24 +0200 | [diff] [blame] | 1130 | extern uint8_t xfunc_error_retval; |
Denys Vlasenko | 550bf5b | 2015-10-09 16:42:57 +0200 | [diff] [blame] | 1131 | extern void (*die_func)(void); |
Denis Vlasenko | a60f84e | 2008-07-05 09:18:54 +0000 | [diff] [blame] | 1132 | extern void xfunc_die(void) NORETURN FAST_FUNC; |
| 1133 | extern void bb_show_usage(void) NORETURN FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1134 | extern void bb_error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; |
| 1135 | extern void bb_error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC; |
| 1136 | extern void bb_perror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; |
| 1137 | extern void bb_simple_perror_msg(const char *s) FAST_FUNC; |
| 1138 | 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] | 1139 | 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] | 1140 | extern void bb_herror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; |
| 1141 | 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] | 1142 | extern void bb_perror_nomsg_and_die(void) NORETURN FAST_FUNC; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1143 | extern void bb_perror_nomsg(void) FAST_FUNC; |
| 1144 | extern void bb_info_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; |
| 1145 | extern void bb_verror_msg(const char *s, va_list p, const char *strerr) FAST_FUNC; |
Michel Stam | d3fabf8 | 2014-11-04 12:19:04 +0100 | [diff] [blame] | 1146 | extern void bb_logenv_override(void) FAST_FUNC; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1147 | |
Denis Vlasenko | 9b49a5e | 2007-10-11 10:05:36 +0000 | [diff] [blame] | 1148 | /* We need to export XXX_main from libbusybox |
| 1149 | * only if we build "individual" binaries |
| 1150 | */ |
| 1151 | #if ENABLE_FEATURE_INDIVIDUAL |
| 1152 | #define MAIN_EXTERNALLY_VISIBLE EXTERNALLY_VISIBLE |
| 1153 | #else |
| 1154 | #define MAIN_EXTERNALLY_VISIBLE |
| 1155 | #endif |
| 1156 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1157 | |
Denis Vlasenko | cd2663f | 2008-06-01 22:36:39 +0000 | [diff] [blame] | 1158 | /* Applets which are useful from another applets */ |
Denis Vlasenko | 06af216 | 2007-02-03 17:28:39 +0000 | [diff] [blame] | 1159 | int bb_cat(char** argv); |
Denis Vlasenko | cd2663f | 2008-06-01 22:36:39 +0000 | [diff] [blame] | 1160 | /* If shell needs them, they exist even if not enabled as applets */ |
Denis Vlasenko | 5e34ff2 | 2009-04-21 11:09:40 +0000 | [diff] [blame] | 1161 | int echo_main(int argc, char** argv) IF_ECHO(MAIN_EXTERNALLY_VISIBLE); |
| 1162 | int printf_main(int argc, char **argv) IF_PRINTF(MAIN_EXTERNALLY_VISIBLE); |
| 1163 | int test_main(int argc, char **argv) IF_TEST(MAIN_EXTERNALLY_VISIBLE); |
| 1164 | int kill_main(int argc, char **argv) IF_KILL(MAIN_EXTERNALLY_VISIBLE); |
Denis Vlasenko | cd2663f | 2008-06-01 22:36:39 +0000 | [diff] [blame] | 1165 | /* Similar, but used by chgrp, not shell */ |
Denis Vlasenko | 5e34ff2 | 2009-04-21 11:09:40 +0000 | [diff] [blame] | 1166 | int chown_main(int argc, char **argv) IF_CHOWN(MAIN_EXTERNALLY_VISIBLE); |
Denis Vlasenko | c41cba5 | 2009-03-09 15:46:07 +0000 | [diff] [blame] | 1167 | /* Used by ftpd */ |
Denis Vlasenko | 5e34ff2 | 2009-04-21 11:09:40 +0000 | [diff] [blame] | 1168 | int ls_main(int argc, char **argv) IF_LS(MAIN_EXTERNALLY_VISIBLE); |
| 1169 | /* Don't need IF_xxx() guard for these */ |
Denis Vlasenko | 9b49a5e | 2007-10-11 10:05:36 +0000 | [diff] [blame] | 1170 | int gunzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
Denis Vlasenko | 77f1ec1 | 2007-10-13 03:36:03 +0000 | [diff] [blame] | 1171 | int bunzip2_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
Denis Vlasenko | 1a9e9bd | 2008-11-01 12:54:56 +0000 | [diff] [blame] | 1172 | |
Denis Vlasenko | 468aea2 | 2008-04-01 14:47:57 +0000 | [diff] [blame] | 1173 | #if ENABLE_ROUTE |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1174 | void bb_displayroutes(int noresolve, int netstatfmt) FAST_FUNC; |
Denis Vlasenko | 468aea2 | 2008-04-01 14:47:57 +0000 | [diff] [blame] | 1175 | #endif |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1176 | |
Denis Vlasenko | 270c17c | 2006-12-26 17:40:33 +0000 | [diff] [blame] | 1177 | |
| 1178 | /* Networking */ |
Denis Vlasenko | f5294e1 | 2007-04-14 10:09:57 +0000 | [diff] [blame] | 1179 | /* This structure defines protocol families and their handlers. */ |
| 1180 | struct aftype { |
| 1181 | const char *name; |
| 1182 | const char *title; |
| 1183 | int af; |
| 1184 | int alen; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1185 | char* FAST_FUNC (*print)(unsigned char *); |
| 1186 | const char* FAST_FUNC (*sprint)(struct sockaddr *, int numeric); |
| 1187 | int FAST_FUNC (*input)(/*int type,*/ const char *bufp, struct sockaddr *); |
| 1188 | void FAST_FUNC (*herror)(char *text); |
| 1189 | int FAST_FUNC (*rprint)(int options); |
| 1190 | int FAST_FUNC (*rinput)(int typ, int ext, char **argv); |
Denis Vlasenko | f5294e1 | 2007-04-14 10:09:57 +0000 | [diff] [blame] | 1191 | /* may modify src */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1192 | int FAST_FUNC (*getmask)(char *src, struct sockaddr *mask, char *name); |
Denis Vlasenko | f5294e1 | 2007-04-14 10:09:57 +0000 | [diff] [blame] | 1193 | }; |
| 1194 | /* This structure defines hardware protocols and their handlers. */ |
| 1195 | struct hwtype { |
| 1196 | const char *name; |
| 1197 | const char *title; |
| 1198 | int type; |
| 1199 | int alen; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1200 | char* FAST_FUNC (*print)(unsigned char *); |
| 1201 | int FAST_FUNC (*input)(const char *, struct sockaddr *); |
| 1202 | int FAST_FUNC (*activate)(int fd); |
Denis Vlasenko | f5294e1 | 2007-04-14 10:09:57 +0000 | [diff] [blame] | 1203 | int suppress_null_addr; |
| 1204 | }; |
Denis Vlasenko | 1b16bda | 2007-06-19 11:10:02 +0000 | [diff] [blame] | 1205 | extern smallint interface_opt_a; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1206 | int display_interfaces(char *ifname) FAST_FUNC; |
Bartosz Golaszewski | c19be75 | 2013-07-25 04:39:04 +0200 | [diff] [blame] | 1207 | int in_ether(const char *bufp, struct sockaddr *sap) FAST_FUNC; |
Bernhard Reutner-Fischer | f3b778a | 2008-05-16 16:10:31 +0000 | [diff] [blame] | 1208 | #if ENABLE_FEATURE_HWIB |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1209 | int in_ib(const char *bufp, struct sockaddr *sap) FAST_FUNC; |
Denis Vlasenko | 3b162ec | 2008-06-04 07:59:51 +0000 | [diff] [blame] | 1210 | #else |
| 1211 | #define in_ib(a, b) 1 /* fail */ |
Bernhard Reutner-Fischer | f3b778a | 2008-05-16 16:10:31 +0000 | [diff] [blame] | 1212 | #endif |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1213 | const struct aftype *get_aftype(const char *name) FAST_FUNC; |
| 1214 | const struct hwtype *get_hwtype(const char *name) FAST_FUNC; |
| 1215 | const struct hwtype *get_hwntype(int type) FAST_FUNC; |
Denis Vlasenko | 270c17c | 2006-12-26 17:40:33 +0000 | [diff] [blame] | 1216 | |
| 1217 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1218 | #ifndef BUILD_INDIVIDUAL |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1219 | extern int find_applet_by_name(const char *name) FAST_FUNC; |
Denis Vlasenko | 32b633a | 2007-04-09 03:05:48 +0000 | [diff] [blame] | 1220 | /* Returns only if applet is not found. */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1221 | 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] | 1222 | 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] | 1223 | #endif |
| 1224 | |
Mike Frysinger | 9412ec7 | 2008-02-07 22:41:33 +0000 | [diff] [blame] | 1225 | #ifdef HAVE_MNTENT_H |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1226 | 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] | 1227 | 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] | 1228 | #endif |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1229 | extern void erase_mtab(const char * name) FAST_FUNC; |
| 1230 | extern unsigned int tty_baud_to_value(speed_t speed) FAST_FUNC; |
| 1231 | extern speed_t tty_value_to_baud(unsigned int value) FAST_FUNC; |
Denys Vlasenko | a355da0 | 2010-01-04 13:16:08 +0100 | [diff] [blame] | 1232 | #if ENABLE_DESKTOP |
| 1233 | extern void bb_warn_ignoring_args(char *arg) FAST_FUNC; |
| 1234 | #else |
| 1235 | # define bb_warn_ignoring_args(arg) ((void)0) |
| 1236 | #endif |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1237 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1238 | extern int get_linux_version_code(void) FAST_FUNC; |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 1239 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1240 | extern char *query_loop(const char *device) FAST_FUNC; |
| 1241 | extern int del_loop(const char *device) FAST_FUNC; |
Denis Vlasenko | 0e2c9fb | 2007-08-03 14:16:24 +0000 | [diff] [blame] | 1242 | /* If *devname is not NULL, use that name, otherwise try to find free one, |
| 1243 | * malloc and return it in *devname. |
| 1244 | * return value: 1: read-only loopdev was setup, 0: rw, < 0: error */ |
Denys Vlasenko | 13e709c | 2011-09-12 02:13:47 +0200 | [diff] [blame] | 1245 | 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] | 1246 | |
Bernhard Reutner-Fischer | 82b1429 | 2008-12-03 18:48:39 +0000 | [diff] [blame] | 1247 | /* Like bb_ask below, but asks on stdin with no timeout. */ |
| 1248 | char *bb_ask_stdin(const char * prompt) FAST_FUNC; |
Denis Vlasenko | 6ef06ee | 2007-03-14 22:06:01 +0000 | [diff] [blame] | 1249 | //TODO: pass buf pointer or return allocated buf (avoid statics)? |
Bernhard Reutner-Fischer | 82b1429 | 2008-12-03 18:48:39 +0000 | [diff] [blame] | 1250 | 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] | 1251 | int bb_ask_confirmation(void) FAST_FUNC; |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 1252 | |
Denys Vlasenko | 5711a2a | 2015-10-07 17:55:33 +0200 | [diff] [blame] | 1253 | /* Returns -1 if input is invalid. current_mode is a base for e.g. "u+rw" */ |
| 1254 | int bb_parse_mode(const char* s, unsigned cur_mode) FAST_FUNC; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1255 | |
Denis Vlasenko | e559e0a | 2008-07-15 21:09:30 +0000 | [diff] [blame] | 1256 | /* |
Denis Vlasenko | 2e157dd | 2008-07-19 09:27:19 +0000 | [diff] [blame] | 1257 | * Config file parser |
Denis Vlasenko | e559e0a | 2008-07-15 21:09:30 +0000 | [diff] [blame] | 1258 | */ |
Denis Vlasenko | dcb3fcb | 2008-07-19 22:57:00 +0000 | [diff] [blame] | 1259 | enum { |
Denis Vlasenko | 084266e | 2008-07-26 23:08:31 +0000 | [diff] [blame] | 1260 | PARSE_COLLAPSE = 0x00010000, // treat consecutive delimiters as one |
| 1261 | PARSE_TRIM = 0x00020000, // trim leading and trailing delimiters |
| 1262 | // TODO: COLLAPSE and TRIM seem to always go in pair |
| 1263 | PARSE_GREEDY = 0x00040000, // last token takes entire remainder of the line |
| 1264 | PARSE_MIN_DIE = 0x00100000, // die if < min tokens found |
Denis Vlasenko | dcb3fcb | 2008-07-19 22:57:00 +0000 | [diff] [blame] | 1265 | // keep a copy of current line |
Denis Vlasenko | 35a064b | 2008-11-06 00:49:59 +0000 | [diff] [blame] | 1266 | PARSE_KEEP_COPY = 0x00200000 * ENABLE_FEATURE_CROND_D, |
Denys Vlasenko | 499597d | 2012-01-11 00:37:17 +0100 | [diff] [blame] | 1267 | PARSE_EOL_COMMENTS = 0x00400000, // comments are recognized even if they aren't the first char |
Denis Vlasenko | 084266e | 2008-07-26 23:08:31 +0000 | [diff] [blame] | 1268 | // NORMAL is: |
| 1269 | // * remove leading and trailing delimiters and collapse |
| 1270 | // multiple delimiters into one |
| 1271 | // * warn and continue if less than mintokens delimiters found |
| 1272 | // * grab everything into last token |
Denys Vlasenko | 499597d | 2012-01-11 00:37:17 +0100 | [diff] [blame] | 1273 | // * comments are recognized even if they aren't the first char |
| 1274 | PARSE_NORMAL = PARSE_COLLAPSE | PARSE_TRIM | PARSE_GREEDY | PARSE_EOL_COMMENTS, |
Denis Vlasenko | dcb3fcb | 2008-07-19 22:57:00 +0000 | [diff] [blame] | 1275 | }; |
Denis Vlasenko | e559e0a | 2008-07-15 21:09:30 +0000 | [diff] [blame] | 1276 | typedef struct parser_t { |
| 1277 | FILE *fp; |
Denis Vlasenko | dcb3fcb | 2008-07-19 22:57:00 +0000 | [diff] [blame] | 1278 | char *data; |
Timo Teras | adcabf3 | 2011-06-20 09:49:56 +0200 | [diff] [blame] | 1279 | char *line, *nline; |
| 1280 | size_t line_alloc, nline_alloc; |
Denis Vlasenko | e559e0a | 2008-07-15 21:09:30 +0000 | [diff] [blame] | 1281 | int lineno; |
| 1282 | } parser_t; |
Bernhard Reutner-Fischer | 6792128 | 2008-07-17 11:59:13 +0000 | [diff] [blame] | 1283 | parser_t* config_open(const char *filename) FAST_FUNC; |
Denis Vlasenko | 5415c85 | 2008-07-21 23:05:26 +0000 | [diff] [blame] | 1284 | 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] | 1285 | /* 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] | 1286 | int config_read(parser_t *parser, char **tokens, unsigned flags, const char *delims) FAST_FUNC; |
| 1287 | #define config_read(parser, tokens, max, min, str, flags) \ |
| 1288 | config_read(parser, tokens, ((flags) | (((min) & 0xFF) << 8) | ((max) & 0xFF)), str) |
Denis Vlasenko | c01340f | 2008-07-16 22:12:18 +0000 | [diff] [blame] | 1289 | void config_close(parser_t *parser) FAST_FUNC; |
Denis Vlasenko | e559e0a | 2008-07-15 21:09:30 +0000 | [diff] [blame] | 1290 | |
Denis Vlasenko | 6bf05cf | 2008-05-07 12:18:48 +0000 | [diff] [blame] | 1291 | /* Concatenate path and filename to new allocated buffer. |
| 1292 | * Add "/" only as needed (no duplicate "//" are produced). |
| 1293 | * If path is NULL, it is assumed to be "/". |
| 1294 | * filename should not be NULL. */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1295 | char *concat_path_file(const char *path, const char *filename) FAST_FUNC; |
Denys Vlasenko | e6df7e2 | 2011-05-23 03:39:08 +0200 | [diff] [blame] | 1296 | /* Returns NULL on . and .. */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1297 | char *concat_subpath_file(const char *path, const char *filename) FAST_FUNC; |
Eric Andersen | e5dfced | 2001-04-09 22:48:12 +0000 | [diff] [blame] | 1298 | |
Denis Vlasenko | 4921b54 | 2007-02-03 02:17:41 +0000 | [diff] [blame] | 1299 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1300 | int bb_make_directory(char *path, long mode, int flags) FAST_FUNC; |
Matt Kraai | ceeff73 | 2001-06-21 19:41:37 +0000 | [diff] [blame] | 1301 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1302 | int get_signum(const char *name) FAST_FUNC; |
| 1303 | const char *get_signame(int number) FAST_FUNC; |
| 1304 | void print_signames(void) FAST_FUNC; |
Rob Landley | c9c1a41 | 2006-07-12 19:17:55 +0000 | [diff] [blame] | 1305 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1306 | char *bb_simplify_path(const char *path) FAST_FUNC; |
Denis Vlasenko | 1cf4a0e | 2009-04-22 13:49:16 +0000 | [diff] [blame] | 1307 | /* Returns ptr to NUL */ |
| 1308 | char *bb_simplify_abs_path_inplace(char *path) FAST_FUNC; |
Eric Andersen | 3450636 | 2001-08-02 05:02:46 +0000 | [diff] [blame] | 1309 | |
Peter Kümmel | a6588fa | 2014-12-22 01:55:54 +0100 | [diff] [blame] | 1310 | #ifndef LOGIN_FAIL_DELAY |
Denys Vlasenko | 681efe2 | 2011-03-08 21:00:36 +0100 | [diff] [blame] | 1311 | #define LOGIN_FAIL_DELAY 3 |
Peter Kümmel | a6588fa | 2014-12-22 01:55:54 +0100 | [diff] [blame] | 1312 | #endif |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1313 | extern void bb_do_delay(int seconds) FAST_FUNC; |
| 1314 | extern void change_identity(const struct passwd *pw) FAST_FUNC; |
Denis Vlasenko | a60f84e | 2008-07-05 09:18:54 +0000 | [diff] [blame] | 1315 | 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] | 1316 | |
| 1317 | /* Returns $SHELL, getpwuid(getuid())->pw_shell, or DEFAULT_SHELL. |
| 1318 | * Note that getpwuid result might need xstrdup'ing |
| 1319 | * if there is a possibility of intervening getpwxxx() calls. |
| 1320 | */ |
Denys Vlasenko | fd77ea5 | 2012-10-03 09:42:21 +0200 | [diff] [blame] | 1321 | const char *get_shell_name(void) FAST_FUNC; |
Denys Vlasenko | 681efe2 | 2011-03-08 21:00:36 +0100 | [diff] [blame] | 1322 | |
Denis Vlasenko | b5a122b | 2006-12-30 14:46:51 +0000 | [diff] [blame] | 1323 | #if ENABLE_SELINUX |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1324 | extern void renew_current_security_context(void) FAST_FUNC; |
| 1325 | extern void set_current_security_context(security_context_t sid) FAST_FUNC; |
Denis Vlasenko | 1203c9b | 2007-03-11 22:16:02 +0000 | [diff] [blame] | 1326 | extern context_t set_security_context_component(security_context_t cur_context, |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1327 | char *user, char *role, char *type, char *range) FAST_FUNC; |
| 1328 | extern void setfscreatecon_or_die(security_context_t scontext) FAST_FUNC; |
| 1329 | extern void selinux_preserve_fcontext(int fdesc) FAST_FUNC; |
Denis Vlasenko | 2edbc2a | 2007-10-20 02:00:49 +0000 | [diff] [blame] | 1330 | #else |
| 1331 | #define selinux_preserve_fcontext(fdesc) ((void)0) |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1332 | #endif |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1333 | extern void selinux_or_die(void) FAST_FUNC; |
Denis Vlasenko | a2f6101 | 2007-09-10 13:15:28 +0000 | [diff] [blame] | 1334 | |
Davide Cavalca | 9b3b979 | 2011-01-25 02:26:03 +0100 | [diff] [blame] | 1335 | |
Denis Vlasenko | a2f6101 | 2007-09-10 13:15:28 +0000 | [diff] [blame] | 1336 | /* setup_environment: |
Bernhard Reutner-Fischer | 99709ab | 2010-02-24 16:10:09 +0100 | [diff] [blame] | 1337 | * 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] | 1338 | * if clear_env = 1: cd(pw->pw_dir), clear environment, then set |
Denis Vlasenko | a2f6101 | 2007-09-10 13:15:28 +0000 | [diff] [blame] | 1339 | * TERM=(old value) |
| 1340 | * USER=pw->pw_name, LOGNAME=pw->pw_name |
| 1341 | * PATH=bb_default_[root_]path |
| 1342 | * HOME=pw->pw_dir |
| 1343 | * SHELL=shell |
Denis Vlasenko | cdf6277 | 2008-03-17 08:42:43 +0000 | [diff] [blame] | 1344 | * else if change_env = 1: |
Denis Vlasenko | a2f6101 | 2007-09-10 13:15:28 +0000 | [diff] [blame] | 1345 | * if not root (if pw->pw_uid != 0): |
| 1346 | * USER=pw->pw_name, LOGNAME=pw->pw_name |
| 1347 | * HOME=pw->pw_dir |
| 1348 | * SHELL=shell |
| 1349 | * else does nothing |
| 1350 | */ |
Denys Vlasenko | fd686a2 | 2010-02-26 09:52:45 +0100 | [diff] [blame] | 1351 | #define SETUP_ENV_CHANGEENV (1 << 0) |
| 1352 | #define SETUP_ENV_CLEARENV (1 << 1) |
| 1353 | #define SETUP_ENV_TO_TMP (1 << 2) |
Pascal Bellard | 70fc8c1 | 2012-06-12 13:21:02 +0200 | [diff] [blame] | 1354 | #define SETUP_ENV_NO_CHDIR (1 << 4) |
Denys Vlasenko | 8b59b2c | 2013-11-19 13:36:45 +0100 | [diff] [blame] | 1355 | void setup_environment(const char *shell, int flags, const struct passwd *pw) FAST_FUNC; |
| 1356 | void nuke_str(char *str) FAST_FUNC; |
Morten Kvistgaard | feac9b6 | 2014-08-05 21:57:18 +0200 | [diff] [blame] | 1357 | int check_password(const struct passwd *pw, const char *plaintext) FAST_FUNC; |
Denys Vlasenko | 8b59b2c | 2013-11-19 13:36:45 +0100 | [diff] [blame] | 1358 | int ask_and_check_password_extended(const struct passwd *pw, int timeout, const char *prompt) FAST_FUNC; |
| 1359 | int ask_and_check_password(const struct passwd *pw) FAST_FUNC; |
Denis Vlasenko | fdddab0 | 2008-06-12 16:56:52 +0000 | [diff] [blame] | 1360 | /* Returns a malloced string */ |
Denis Vlasenko | b4c5bf6 | 2008-06-15 18:35:34 +0000 | [diff] [blame] | 1361 | #if !ENABLE_USE_BB_CRYPT |
| 1362 | #define pw_encrypt(clear, salt, cleanup) pw_encrypt(clear, salt) |
| 1363 | #endif |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1364 | extern char *pw_encrypt(const char *clear, const char *salt, int cleanup) FAST_FUNC; |
| 1365 | 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] | 1366 | /* |
| 1367 | * rnd is additional random input. New one is returned. |
Denis Vlasenko | 4ea83bf | 2008-06-12 16:55:59 +0000 | [diff] [blame] | 1368 | * Useful if you call crypt_make_salt many times in a row: |
| 1369 | * rnd = crypt_make_salt(buf1, 4, 0); |
| 1370 | * rnd = crypt_make_salt(buf2, 4, rnd); |
| 1371 | * rnd = crypt_make_salt(buf3, 4, rnd); |
| 1372 | * (otherwise we risk having same salt generated) |
| 1373 | */ |
Denys Vlasenko | 12a4327 | 2011-05-13 03:19:01 +0200 | [diff] [blame] | 1374 | extern int crypt_make_salt(char *p, int cnt /*, int rnd*/) FAST_FUNC; |
| 1375 | /* "$N$" + sha_salt_16_bytes + NUL */ |
| 1376 | #define MAX_PW_SALT_LEN (3 + 16 + 1) |
| 1377 | extern char* crypt_make_pw_salt(char p[MAX_PW_SALT_LEN], const char *algo) FAST_FUNC; |
| 1378 | |
Denis Vlasenko | 829bbd3 | 2009-04-14 00:51:05 +0000 | [diff] [blame] | 1379 | |
Denis Vlasenko | 4ea83bf | 2008-06-12 16:55:59 +0000 | [diff] [blame] | 1380 | /* Returns number of lines changed, or -1 on error */ |
Denis Vlasenko | 829bbd3 | 2009-04-14 00:51:05 +0000 | [diff] [blame] | 1381 | #if !(ENABLE_FEATURE_ADDUSER_TO_GROUP || ENABLE_FEATURE_DEL_USER_FROM_GROUP) |
| 1382 | #define update_passwd(filename, username, data, member) \ |
| 1383 | update_passwd(filename, username, data) |
| 1384 | #endif |
| 1385 | extern int update_passwd(const char *filename, |
| 1386 | const char *username, |
| 1387 | const char *data, |
| 1388 | const char *member) FAST_FUNC; |
Denis Vlasenko | bfc3d82 | 2007-11-04 04:10:17 +0000 | [diff] [blame] | 1389 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1390 | int index_in_str_array(const char *const string_array[], const char *key) FAST_FUNC; |
| 1391 | int index_in_strings(const char *strings, const char *key) FAST_FUNC; |
| 1392 | int index_in_substr_array(const char *const string_array[], const char *key) FAST_FUNC; |
| 1393 | int index_in_substrings(const char *strings, const char *key) FAST_FUNC; |
| 1394 | const char *nth_string(const char *strings, int n) FAST_FUNC; |
Denis Vlasenko | bfc3d82 | 2007-11-04 04:10:17 +0000 | [diff] [blame] | 1395 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1396 | extern void print_login_issue(const char *issue_file, const char *tty) FAST_FUNC; |
| 1397 | extern void print_login_prompt(void) FAST_FUNC; |
Denis Vlasenko | bb7fcb4 | 2007-03-26 13:20:04 +0000 | [diff] [blame] | 1398 | |
Denys Vlasenko | 53283ad | 2009-11-02 14:20:34 +0100 | [diff] [blame] | 1399 | char *xmalloc_ttyname(int fd) FAST_FUNC RETURNS_MALLOC; |
Denis Vlasenko | f893da8 | 2007-08-09 08:27:24 +0000 | [diff] [blame] | 1400 | /* 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] | 1401 | int get_terminal_width_height(int fd, unsigned *width, unsigned *height) FAST_FUNC; |
Denys Vlasenko | 641caae | 2015-10-23 01:44:22 +0200 | [diff] [blame^] | 1402 | int get_terminal_width(int fd) FAST_FUNC; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1403 | |
Denis Vlasenko | 202ac50 | 2008-11-05 13:20:58 +0000 | [diff] [blame] | 1404 | int tcsetattr_stdin_TCSANOW(const struct termios *tp) FAST_FUNC; |
| 1405 | |
Denis Vlasenko | 5bb2fc2 | 2008-04-21 03:23:59 +0000 | [diff] [blame] | 1406 | /* NB: "unsigned request" is crucial! "int request" will break some arches! */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1407 | int ioctl_or_perror(int fd, unsigned request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5))) FAST_FUNC; |
| 1408 | 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] | 1409 | #if ENABLE_IOCTL_HEX2STR_ERROR |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1410 | int bb_ioctl_or_warn(int fd, unsigned request, void *argp, const char *ioctl_name) FAST_FUNC; |
| 1411 | 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] | 1412 | #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp,#request) |
| 1413 | #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp,#request) |
| 1414 | #else |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1415 | int bb_ioctl_or_warn(int fd, unsigned request, void *argp) FAST_FUNC; |
| 1416 | int bb_xioctl(int fd, unsigned request, void *argp) FAST_FUNC; |
Denis Vlasenko | fb79a2e | 2007-07-14 22:07:14 +0000 | [diff] [blame] | 1417 | #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp) |
| 1418 | #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp) |
| 1419 | #endif |
| 1420 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1421 | char *is_in_ino_dev_hashtable(const struct stat *statbuf) FAST_FUNC; |
| 1422 | void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name) FAST_FUNC; |
| 1423 | void reset_ino_dev_hashtable(void) FAST_FUNC; |
Denis Vlasenko | 0b35470 | 2006-11-24 14:54:27 +0000 | [diff] [blame] | 1424 | #ifdef __GLIBC__ |
| 1425 | /* At least glibc has horrendously large inline for this, so wrap it */ |
Denys Vlasenko | 975c714 | 2011-01-24 23:53:12 +0100 | [diff] [blame] | 1426 | unsigned long long bb_makedev(unsigned major, unsigned minor) FAST_FUNC; |
Denis Vlasenko | 0b35470 | 2006-11-24 14:54:27 +0000 | [diff] [blame] | 1427 | #undef makedev |
| 1428 | #define makedev(a,b) bb_makedev(a,b) |
| 1429 | #endif |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1430 | |
| 1431 | |
Denys Vlasenko | 4b7db4f | 2009-05-29 10:39:06 +0200 | [diff] [blame] | 1432 | /* "Keycodes" that report an escape sequence. |
| 1433 | * We use something which fits into signed char, |
Denys Vlasenko | 5370bfb | 2009-09-06 02:58:59 +0200 | [diff] [blame] | 1434 | * yet doesn't represent any valid Unicode character. |
Denys Vlasenko | 4b7db4f | 2009-05-29 10:39:06 +0200 | [diff] [blame] | 1435 | * Also, -1 is reserved for error indication and we don't use it. */ |
| 1436 | enum { |
| 1437 | KEYCODE_UP = -2, |
| 1438 | KEYCODE_DOWN = -3, |
| 1439 | KEYCODE_RIGHT = -4, |
| 1440 | KEYCODE_LEFT = -5, |
| 1441 | KEYCODE_HOME = -6, |
| 1442 | KEYCODE_END = -7, |
| 1443 | KEYCODE_INSERT = -8, |
| 1444 | KEYCODE_DELETE = -9, |
| 1445 | KEYCODE_PAGEUP = -10, |
| 1446 | KEYCODE_PAGEDOWN = -11, |
Denys Vlasenko | 9ce09bc | 2011-11-03 13:28:22 +0100 | [diff] [blame] | 1447 | // -12 is reserved for Alt/Ctrl/Shift-TAB |
| 1448 | #if 0 |
| 1449 | KEYCODE_FUN1 = -13, |
| 1450 | KEYCODE_FUN2 = -14, |
| 1451 | KEYCODE_FUN3 = -15, |
| 1452 | KEYCODE_FUN4 = -16, |
| 1453 | KEYCODE_FUN5 = -17, |
| 1454 | KEYCODE_FUN6 = -18, |
| 1455 | KEYCODE_FUN7 = -19, |
| 1456 | KEYCODE_FUN8 = -20, |
| 1457 | KEYCODE_FUN9 = -21, |
| 1458 | KEYCODE_FUN10 = -22, |
| 1459 | KEYCODE_FUN11 = -23, |
| 1460 | KEYCODE_FUN12 = -24, |
| 1461 | #endif |
| 1462 | /* Be sure that last defined value is small enough |
| 1463 | * to not interfere with Alt/Ctrl/Shift bits. |
| 1464 | * So far we do not exceed -31 (0xfff..fffe1), |
| 1465 | * which gives us three upper bits in LSB to play with. |
| 1466 | */ |
| 1467 | //KEYCODE_SHIFT_TAB = (-12) & ~0x80, |
| 1468 | //KEYCODE_SHIFT_... = KEYCODE_... & ~0x80, |
| 1469 | //KEYCODE_CTRL_UP = KEYCODE_UP & ~0x40, |
| 1470 | //KEYCODE_CTRL_DOWN = KEYCODE_DOWN & ~0x40, |
Denys Vlasenko | a17eeb8 | 2009-10-25 23:50:56 +0100 | [diff] [blame] | 1471 | KEYCODE_CTRL_RIGHT = KEYCODE_RIGHT & ~0x40, |
| 1472 | KEYCODE_CTRL_LEFT = KEYCODE_LEFT & ~0x40, |
Denys Vlasenko | 9ce09bc | 2011-11-03 13:28:22 +0100 | [diff] [blame] | 1473 | //KEYCODE_ALT_UP = KEYCODE_UP & ~0x20, |
| 1474 | //KEYCODE_ALT_DOWN = KEYCODE_DOWN & ~0x20, |
| 1475 | KEYCODE_ALT_RIGHT = KEYCODE_RIGHT & ~0x20, |
| 1476 | KEYCODE_ALT_LEFT = KEYCODE_LEFT & ~0x20, |
| 1477 | |
Denys Vlasenko | 180f585 | 2009-10-26 00:59:59 +0100 | [diff] [blame] | 1478 | KEYCODE_CURSOR_POS = -0x100, /* 0xfff..fff00 */ |
Denys Vlasenko | 4b7db4f | 2009-05-29 10:39:06 +0200 | [diff] [blame] | 1479 | /* How long is the longest ESC sequence we know? |
| 1480 | * We want it big enough to be able to contain |
| 1481 | * cursor position sequence "ESC [ 9999 ; 9999 R" |
| 1482 | */ |
| 1483 | KEYCODE_BUFFER_SIZE = 16 |
| 1484 | }; |
| 1485 | /* Note: fd may be in blocking or non-blocking mode, both make sense. |
| 1486 | * For one, less uses non-blocking mode. |
| 1487 | * Only the first read syscall inside read_key may block indefinitely |
| 1488 | * (unless fd is in non-blocking mode), |
| 1489 | * subsequent reads will time out after a few milliseconds. |
| 1490 | * Return of -1 means EOF or error (errno == 0 on EOF). |
| 1491 | * buffer[0] is used as a counter of buffered chars and must be 0 |
| 1492 | * on first call. |
Denys Vlasenko | 58f108e | 2010-03-11 21:17:55 +0100 | [diff] [blame] | 1493 | * timeout: |
| 1494 | * -2: do not poll for input; |
| 1495 | * -1: poll(-1) (i.e. block); |
| 1496 | * >=0: poll for TIMEOUT milliseconds, return -1/EAGAIN on timeout |
Denys Vlasenko | 4b7db4f | 2009-05-29 10:39:06 +0200 | [diff] [blame] | 1497 | */ |
Denys Vlasenko | 58f108e | 2010-03-11 21:17:55 +0100 | [diff] [blame] | 1498 | int64_t read_key(int fd, char *buffer, int timeout) FAST_FUNC; |
Tomas Heinrich | d2b0405 | 2010-03-09 14:09:24 +0100 | [diff] [blame] | 1499 | 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] | 1500 | |
| 1501 | |
Denis Vlasenko | 38f6319 | 2007-01-22 09:03:07 +0000 | [diff] [blame] | 1502 | #if ENABLE_FEATURE_EDITING |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1503 | /* It's NOT just ENABLEd or disabled. It's a number: */ |
Denys Vlasenko | 2c4de5b | 2011-03-31 13:16:52 +0200 | [diff] [blame] | 1504 | # if defined CONFIG_FEATURE_EDITING_HISTORY && CONFIG_FEATURE_EDITING_HISTORY > 0 |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 1505 | # define MAX_HISTORY (CONFIG_FEATURE_EDITING_HISTORY + 0) |
Flemming Madsen | d96ffda | 2013-04-07 18:47:24 +0200 | [diff] [blame] | 1506 | unsigned size_from_HISTFILESIZE(const char *hp) FAST_FUNC; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 1507 | # else |
| 1508 | # define MAX_HISTORY 0 |
| 1509 | # endif |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 1510 | typedef struct line_input_t { |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1511 | int flags; |
| 1512 | const char *path_lookup; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 1513 | # if MAX_HISTORY |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1514 | int cnt_history; |
| 1515 | int cur_history; |
Denys Vlasenko | 2c4de5b | 2011-03-31 13:16:52 +0200 | [diff] [blame] | 1516 | int max_history; /* must never be <= 0 */ |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 1517 | # if ENABLE_FEATURE_EDITING_SAVEHISTORY |
Denys Vlasenko | bede215 | 2011-09-04 16:12:33 +0200 | [diff] [blame] | 1518 | /* meaning of this field depends on FEATURE_EDITING_SAVE_ON_EXIT: |
| 1519 | * if !FEATURE_EDITING_SAVE_ON_EXIT: "how many lines are |
| 1520 | * in on-disk history" |
| 1521 | * if FEATURE_EDITING_SAVE_ON_EXIT: "how many in-memory lines are |
| 1522 | * also in on-disk history (and thus need to be skipped on save)" |
| 1523 | */ |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1524 | unsigned cnt_history_in_file; |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1525 | const char *hist_file; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 1526 | # endif |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1527 | char *history[MAX_HISTORY + 1]; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 1528 | # endif |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 1529 | } line_input_t; |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1530 | enum { |
Denys Vlasenko | e45af7a | 2011-09-04 16:15:24 +0200 | [diff] [blame] | 1531 | DO_HISTORY = 1 * (MAX_HISTORY > 0), |
| 1532 | TAB_COMPLETION = 2 * ENABLE_FEATURE_TAB_COMPLETION, |
| 1533 | USERNAME_COMPLETION = 4 * ENABLE_FEATURE_USERNAME_COMPLETION, |
| 1534 | VI_MODE = 8 * ENABLE_FEATURE_EDITING_VI, |
| 1535 | WITH_PATH_LOOKUP = 0x10, |
| 1536 | FOR_SHELL = DO_HISTORY | TAB_COMPLETION | USERNAME_COMPLETION, |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1537 | }; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1538 | line_input_t *new_line_input_t(int flags) FAST_FUNC; |
Denys Vlasenko | 5c2e81b | 2009-07-16 14:14:34 +0200 | [diff] [blame] | 1539 | /* 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] | 1540 | /* |
| 1541 | * maxsize must be >= 2. |
Denys Vlasenko | 5c2e81b | 2009-07-16 14:14:34 +0200 | [diff] [blame] | 1542 | * Returns: |
Denis Vlasenko | 80667e3 | 2008-02-02 18:35:55 +0000 | [diff] [blame] | 1543 | * -1 on read errors or EOF, or on bare Ctrl-D, |
| 1544 | * 0 on ctrl-C (the line entered is still returned in 'command'), |
Denis Vlasenko | 6a5377a | 2007-09-25 18:35:28 +0000 | [diff] [blame] | 1545 | * >0 length of input string, including terminating '\n' |
Denis Vlasenko | 6a5377a | 2007-09-25 18:35:28 +0000 | [diff] [blame] | 1546 | */ |
Denys Vlasenko | 66c5b12 | 2011-02-08 05:07:02 +0100 | [diff] [blame] | 1547 | int read_line_input(line_input_t *st, const char *prompt, char *command, int maxsize, int timeout) FAST_FUNC; |
Flemming Madsen | d96ffda | 2013-04-07 18:47:24 +0200 | [diff] [blame] | 1548 | void show_history(const line_input_t *st) FAST_FUNC; |
Denys Vlasenko | bede215 | 2011-09-04 16:12:33 +0200 | [diff] [blame] | 1549 | # if ENABLE_FEATURE_EDITING_SAVE_ON_EXIT |
| 1550 | void save_history(line_input_t *st); |
| 1551 | # endif |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1552 | #else |
Denys Vlasenko | 36df048 | 2009-10-19 16:07:28 +0200 | [diff] [blame] | 1553 | #define MAX_HISTORY 0 |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1554 | 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] | 1555 | #define read_line_input(state, prompt, command, maxsize, timeout) \ |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1556 | read_line_input(prompt, command, maxsize) |
| 1557 | #endif |
| 1558 | |
| 1559 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1560 | #ifndef COMM_LEN |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 1561 | # ifdef TASK_COMM_LEN |
Denis Vlasenko | fa07680 | 2006-11-05 00:38:51 +0000 | [diff] [blame] | 1562 | enum { COMM_LEN = TASK_COMM_LEN }; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 1563 | # else |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1564 | /* synchronize with sizeof(task_struct.comm) in /usr/include/linux/sched.h */ |
Denis Vlasenko | fa07680 | 2006-11-05 00:38:51 +0000 | [diff] [blame] | 1565 | enum { COMM_LEN = 16 }; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 1566 | # endif |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1567 | #endif |
Alexander Shishkin | 0834a6d | 2010-08-28 23:20:34 +0200 | [diff] [blame] | 1568 | |
| 1569 | struct smaprec { |
| 1570 | unsigned long mapped_rw; |
| 1571 | unsigned long mapped_ro; |
| 1572 | unsigned long shared_clean; |
| 1573 | unsigned long shared_dirty; |
| 1574 | unsigned long private_clean; |
| 1575 | unsigned long private_dirty; |
| 1576 | unsigned long stack; |
| 1577 | unsigned long smap_pss, smap_swap; |
| 1578 | unsigned long smap_size; |
| 1579 | unsigned long smap_start; |
| 1580 | char smap_mode[5]; |
| 1581 | char *smap_name; |
| 1582 | }; |
| 1583 | |
| 1584 | #if !ENABLE_PMAP |
| 1585 | #define procps_read_smaps(pid, total, cb, data) \ |
| 1586 | procps_read_smaps(pid, total) |
| 1587 | #endif |
| 1588 | int FAST_FUNC procps_read_smaps(pid_t pid, struct smaprec *total, |
Denys Vlasenko | 6830ade | 2013-01-15 13:58:01 +0100 | [diff] [blame] | 1589 | void (*cb)(struct smaprec *, void *), void *data); |
Alexander Shishkin | 0834a6d | 2010-08-28 23:20:34 +0200 | [diff] [blame] | 1590 | |
Denis Vlasenko | 512499c | 2007-08-26 18:23:13 +0000 | [diff] [blame] | 1591 | typedef struct procps_status_t { |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 1592 | DIR *dir; |
Denys Vlasenko | b410d4a | 2009-09-19 22:29:42 +0200 | [diff] [blame] | 1593 | IF_FEATURE_SHOW_THREADS(DIR *task_dir;) |
Denis Vlasenko | 512499c | 2007-08-26 18:23:13 +0000 | [diff] [blame] | 1594 | uint8_t shift_pages_to_bytes; |
| 1595 | uint8_t shift_pages_to_kb; |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 1596 | /* 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] | 1597 | uint16_t argv_len; |
Denis Vlasenko | f7d07b1 | 2007-06-30 08:03:26 +0000 | [diff] [blame] | 1598 | char *argv0; |
Alexander Shishkin | e766f62 | 2009-07-29 01:35:13 +0200 | [diff] [blame] | 1599 | char *exe; |
Denis Vlasenko | 5e34ff2 | 2009-04-21 11:09:40 +0000 | [diff] [blame] | 1600 | IF_SELINUX(char *context;) |
Lauri Kasanen | 6578f2c | 2010-12-05 05:22:29 +0100 | [diff] [blame] | 1601 | IF_FEATURE_SHOW_THREADS(unsigned main_thread_pid;) |
Denis Vlasenko | 0696b8a | 2007-06-06 07:40:16 +0000 | [diff] [blame] | 1602 | /* Everything below must contain no ptrs to malloc'ed data: |
| 1603 | * it is memset(0) for each process in procps_scan() */ |
Denis Vlasenko | fc1e995 | 2007-08-29 18:23:36 +0000 | [diff] [blame] | 1604 | unsigned long vsz, rss; /* we round it to kbytes */ |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 1605 | unsigned long stime, utime; |
Denis Vlasenko | 5fee2e1 | 2008-01-05 03:26:41 +0000 | [diff] [blame] | 1606 | unsigned long start_time; |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 1607 | unsigned pid; |
| 1608 | unsigned ppid; |
| 1609 | unsigned pgid; |
| 1610 | unsigned sid; |
| 1611 | unsigned uid; |
| 1612 | unsigned gid; |
Denys Vlasenko | fca70a8 | 2009-07-03 22:16:17 +0200 | [diff] [blame] | 1613 | #if ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS |
| 1614 | unsigned ruid; |
| 1615 | unsigned rgid; |
| 1616 | int niceness; |
| 1617 | #endif |
Denis Vlasenko | 31789a8 | 2007-06-19 14:43:17 +0000 | [diff] [blame] | 1618 | unsigned tty_major,tty_minor; |
Denis Vlasenko | ff6e8e2 | 2007-09-08 16:51:19 +0000 | [diff] [blame] | 1619 | #if ENABLE_FEATURE_TOPMEM |
Alexander Shishkin | 0834a6d | 2010-08-28 23:20:34 +0200 | [diff] [blame] | 1620 | struct smaprec smaps; |
Denis Vlasenko | ff6e8e2 | 2007-09-08 16:51:19 +0000 | [diff] [blame] | 1621 | #endif |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 1622 | char state[4]; |
Denis Vlasenko | 98ebab8 | 2007-06-30 14:47:41 +0000 | [diff] [blame] | 1623 | /* basename of executable in exec(2), read from /proc/N/stat |
| 1624 | * (if executable is symlink or script, it is NOT replaced |
| 1625 | * by link target or interpreter name) */ |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 1626 | char comm[COMM_LEN]; |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 1627 | /* user/group? - use passwd/group parsing functions */ |
Denis Vlasenko | 17e7f04 | 2008-09-25 10:48:06 +0000 | [diff] [blame] | 1628 | #if ENABLE_FEATURE_TOP_SMP_PROCESS |
| 1629 | int last_seen_on_cpu; |
| 1630 | #endif |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1631 | } procps_status_t; |
Denys Vlasenko | fca70a8 | 2009-07-03 22:16:17 +0200 | [diff] [blame] | 1632 | /* flag bits for procps_scan(xx, flags) calls */ |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 1633 | enum { |
| 1634 | PSSCAN_PID = 1 << 0, |
| 1635 | PSSCAN_PPID = 1 << 1, |
| 1636 | PSSCAN_PGID = 1 << 2, |
| 1637 | PSSCAN_SID = 1 << 3, |
| 1638 | PSSCAN_UIDGID = 1 << 4, |
| 1639 | PSSCAN_COMM = 1 << 5, |
Denis Vlasenko | 98ebab8 | 2007-06-30 14:47:41 +0000 | [diff] [blame] | 1640 | /* PSSCAN_CMD = 1 << 6, - use read_cmdline instead */ |
Denis Vlasenko | f7d07b1 | 2007-06-30 08:03:26 +0000 | [diff] [blame] | 1641 | PSSCAN_ARGV0 = 1 << 7, |
Alexander Shishkin | e766f62 | 2009-07-29 01:35:13 +0200 | [diff] [blame] | 1642 | PSSCAN_EXE = 1 << 8, |
Denis Vlasenko | f7d07b1 | 2007-06-30 08:03:26 +0000 | [diff] [blame] | 1643 | PSSCAN_STATE = 1 << 9, |
| 1644 | PSSCAN_VSZ = 1 << 10, |
| 1645 | PSSCAN_RSS = 1 << 11, |
| 1646 | PSSCAN_STIME = 1 << 12, |
| 1647 | PSSCAN_UTIME = 1 << 13, |
| 1648 | PSSCAN_TTY = 1 << 14, |
Denis Vlasenko | ff6e8e2 | 2007-09-08 16:51:19 +0000 | [diff] [blame] | 1649 | PSSCAN_SMAPS = (1 << 15) * ENABLE_FEATURE_TOPMEM, |
Denis Vlasenko | 9f00e05 | 2009-02-14 01:36:11 +0000 | [diff] [blame] | 1650 | /* NB: used by find_pid_by_name(). Any applet using it |
| 1651 | * needs to be mentioned here. */ |
| 1652 | PSSCAN_ARGVN = (1 << 16) * (ENABLE_KILLALL |
| 1653 | || ENABLE_PGREP || ENABLE_PKILL |
| 1654 | || ENABLE_PIDOF |
Denis Vlasenko | 3266aa9 | 2009-04-01 11:24:04 +0000 | [diff] [blame] | 1655 | || ENABLE_SESTATUS |
Denis Vlasenko | 9f00e05 | 2009-02-14 01:36:11 +0000 | [diff] [blame] | 1656 | ), |
Denys Vlasenko | 4ff1ce0 | 2009-09-22 11:21:48 +0200 | [diff] [blame] | 1657 | PSSCAN_CONTEXT = (1 << 17) * ENABLE_SELINUX, |
Denis Vlasenko | 5fee2e1 | 2008-01-05 03:26:41 +0000 | [diff] [blame] | 1658 | PSSCAN_START_TIME = 1 << 18, |
Denys Vlasenko | fca70a8 | 2009-07-03 22:16:17 +0200 | [diff] [blame] | 1659 | PSSCAN_CPU = (1 << 19) * ENABLE_FEATURE_TOP_SMP_PROCESS, |
| 1660 | PSSCAN_NICE = (1 << 20) * ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS, |
| 1661 | PSSCAN_RUIDGID = (1 << 21) * ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS, |
Denys Vlasenko | b410d4a | 2009-09-19 22:29:42 +0200 | [diff] [blame] | 1662 | PSSCAN_TASKS = (1 << 22) * ENABLE_FEATURE_SHOW_THREADS, |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 1663 | }; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1664 | //procps_status_t* alloc_procps_scan(void) FAST_FUNC; |
| 1665 | void free_procps_scan(procps_status_t* sp) FAST_FUNC; |
| 1666 | 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] | 1667 | /* Format cmdline (up to col chars) into char buf[size] */ |
Denis Vlasenko | 98ebab8 | 2007-06-30 14:47:41 +0000 | [diff] [blame] | 1668 | /* Puts [comm] if cmdline is empty (-> process is a kernel thread) */ |
Denys Vlasenko | 3a0f6f2 | 2009-09-12 00:15:34 +0200 | [diff] [blame] | 1669 | 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] | 1670 | pid_t *find_pid_by_name(const char* procName) FAST_FUNC; |
| 1671 | pid_t *pidlist_reverse(pid_t *pidList) FAST_FUNC; |
Denys Vlasenko | c9b9750 | 2010-08-16 02:49:21 +0200 | [diff] [blame] | 1672 | int starts_with_cpu(const char *str) FAST_FUNC; |
| 1673 | unsigned get_cpu_count(void) FAST_FUNC; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1674 | |
| 1675 | |
Denys Vlasenko | dd1061b | 2011-09-11 21:04:02 +0200 | [diff] [blame] | 1676 | /* Use strict=1 if you process input from untrusted source: |
| 1677 | * it will return NULL on invalid %xx (bad hex chars) |
| 1678 | * and str + 1 if decoded char is / or NUL. |
| 1679 | * In non-strict mode, it always succeeds (returns str), |
| 1680 | * and also it additionally decoded '+' to space. |
| 1681 | */ |
| 1682 | char *percent_decode_in_place(char *str, int strict) FAST_FUNC; |
| 1683 | |
| 1684 | |
Aurelien Jarno | d3a4239 | 2012-07-24 16:28:34 +0200 | [diff] [blame] | 1685 | extern const char bb_uuenc_tbl_base64[] ALIGN1; |
| 1686 | extern const char bb_uuenc_tbl_std[] ALIGN1; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1687 | 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] | 1688 | enum { |
| 1689 | BASE64_FLAG_UU_STOP = 0x100, |
| 1690 | /* Sign-extends to a value which never matches fgetc result: */ |
| 1691 | BASE64_FLAG_NO_STOP_CHAR = 0x80, |
| 1692 | }; |
Leonid Lisovskiy | 328f27f | 2011-10-28 13:59:04 +0200 | [diff] [blame] | 1693 | const char *decode_base64(char **pp_dst, const char *src) FAST_FUNC; |
| 1694 | void read_base64(FILE *src_stream, FILE *dst_stream, int flags) FAST_FUNC; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1695 | |
Denis Vlasenko | dd539f7 | 2006-11-01 20:20:37 +0000 | [diff] [blame] | 1696 | typedef struct md5_ctx_t { |
Denys Vlasenko | 302ad14 | 2010-10-19 02:16:12 +0200 | [diff] [blame] | 1697 | uint8_t wbuffer[64]; /* always correctly aligned for uint64_t */ |
| 1698 | void (*process_block)(struct md5_ctx_t*) FAST_FUNC; |
Denys Vlasenko | c48a5c6 | 2010-10-18 14:48:30 +0200 | [diff] [blame] | 1699 | uint64_t total64; /* must be directly before hash[] */ |
Denys Vlasenko | 302ad14 | 2010-10-19 02:16:12 +0200 | [diff] [blame] | 1700 | uint32_t hash[8]; /* 4 elements for md5, 5 for sha1, 8 for sha256 */ |
| 1701 | } md5_ctx_t; |
| 1702 | typedef struct md5_ctx_t sha1_ctx_t; |
| 1703 | typedef struct md5_ctx_t sha256_ctx_t; |
Denys Vlasenko | c48a5c6 | 2010-10-18 14:48:30 +0200 | [diff] [blame] | 1704 | typedef struct sha512_ctx_t { |
| 1705 | uint64_t total64[2]; /* must be directly before hash[] */ |
| 1706 | uint64_t hash[8]; |
Denys Vlasenko | 302ad14 | 2010-10-19 02:16:12 +0200 | [diff] [blame] | 1707 | uint8_t wbuffer[128]; /* always correctly aligned for uint64_t */ |
Denys Vlasenko | c48a5c6 | 2010-10-18 14:48:30 +0200 | [diff] [blame] | 1708 | } sha512_ctx_t; |
Lauri Kasanen | b8173b6 | 2013-01-14 05:20:50 +0100 | [diff] [blame] | 1709 | typedef struct sha3_ctx_t { |
| 1710 | uint64_t state[25]; |
| 1711 | unsigned bytes_queued; |
| 1712 | } sha3_ctx_t; |
Denys Vlasenko | 302ad14 | 2010-10-19 02:16:12 +0200 | [diff] [blame] | 1713 | void md5_begin(md5_ctx_t *ctx) FAST_FUNC; |
Denys Vlasenko | 2cfcc9e | 2013-01-20 00:38:09 +0100 | [diff] [blame] | 1714 | void md5_hash(md5_ctx_t *ctx, const void *buffer, size_t len) FAST_FUNC; |
Denys Vlasenko | 302ad14 | 2010-10-19 02:16:12 +0200 | [diff] [blame] | 1715 | void md5_end(md5_ctx_t *ctx, void *resbuf) FAST_FUNC; |
| 1716 | void sha1_begin(sha1_ctx_t *ctx) FAST_FUNC; |
| 1717 | #define sha1_hash md5_hash |
| 1718 | void sha1_end(sha1_ctx_t *ctx, void *resbuf) FAST_FUNC; |
| 1719 | void sha256_begin(sha256_ctx_t *ctx) FAST_FUNC; |
| 1720 | #define sha256_hash md5_hash |
| 1721 | #define sha256_end sha1_end |
Denys Vlasenko | c48a5c6 | 2010-10-18 14:48:30 +0200 | [diff] [blame] | 1722 | void sha512_begin(sha512_ctx_t *ctx) FAST_FUNC; |
| 1723 | void sha512_hash(sha512_ctx_t *ctx, const void *buffer, size_t len) FAST_FUNC; |
| 1724 | void sha512_end(sha512_ctx_t *ctx, void *resbuf) FAST_FUNC; |
Lauri Kasanen | b8173b6 | 2013-01-14 05:20:50 +0100 | [diff] [blame] | 1725 | void sha3_begin(sha3_ctx_t *ctx) FAST_FUNC; |
| 1726 | void sha3_hash(sha3_ctx_t *ctx, const void *buffer, size_t len) FAST_FUNC; |
Denys Vlasenko | 2cfcc9e | 2013-01-20 00:38:09 +0100 | [diff] [blame] | 1727 | void sha3_end(sha3_ctx_t *ctx, void *resbuf) FAST_FUNC; |
Denis Vlasenko | e9b9a19 | 2008-11-11 01:38:04 +0000 | [diff] [blame] | 1728 | |
Denys Vlasenko | 9ce642f | 2010-10-27 15:26:45 +0200 | [diff] [blame] | 1729 | extern uint32_t *global_crc32_table; |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 1730 | uint32_t *crc32_filltable(uint32_t *tbl256, int endian) FAST_FUNC; |
Denys Vlasenko | 9ce642f | 2010-10-27 15:26:45 +0200 | [diff] [blame] | 1731 | uint32_t crc32_block_endian1(uint32_t val, const void *buf, unsigned len, uint32_t *crc_table) FAST_FUNC; |
| 1732 | 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] | 1733 | |
| 1734 | typedef struct masks_labels_t { |
| 1735 | const char *labels; |
| 1736 | const int masks[]; |
| 1737 | } masks_labels_t; |
| 1738 | int print_flags_separated(const int *masks, const char *labels, |
| 1739 | int flags, const char *separator) FAST_FUNC; |
| 1740 | int print_flags(const masks_labels_t *ml, int flags) FAST_FUNC; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1741 | |
Magnus Damm | f591499 | 2009-11-08 16:34:43 +0100 | [diff] [blame] | 1742 | typedef struct bb_progress_t { |
Denys Vlasenko | ab8d00d | 2011-02-11 19:09:30 +0100 | [diff] [blame] | 1743 | unsigned last_size; |
| 1744 | unsigned last_update_sec; |
| 1745 | unsigned last_change_sec; |
Magnus Damm | f591499 | 2009-11-08 16:34:43 +0100 | [diff] [blame] | 1746 | unsigned start_sec; |
Denys Vlasenko | d55e139 | 2011-02-11 18:56:13 +0100 | [diff] [blame] | 1747 | const char *curfile; |
Magnus Damm | f591499 | 2009-11-08 16:34:43 +0100 | [diff] [blame] | 1748 | } bb_progress_t; |
| 1749 | |
Denys Vlasenko | d55e139 | 2011-02-11 18:56:13 +0100 | [diff] [blame] | 1750 | #define is_bb_progress_inited(p) ((p)->curfile != NULL) |
| 1751 | #define bb_progress_free(p) do { \ |
| 1752 | if (ENABLE_UNICODE_SUPPORT) free((char*)((p)->curfile)); \ |
| 1753 | (p)->curfile = NULL; \ |
| 1754 | } while (0) |
| 1755 | void bb_progress_init(bb_progress_t *p, const char *curfile) FAST_FUNC; |
| 1756 | void bb_progress_update(bb_progress_t *p, |
Denys Vlasenko | 805aa9f | 2011-02-10 14:25:51 +0100 | [diff] [blame] | 1757 | uoff_t beg_range, |
| 1758 | uoff_t transferred, |
| 1759 | uoff_t totalsize) FAST_FUNC; |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1760 | |
Denys Vlasenko | d55e139 | 2011-02-11 18:56:13 +0100 | [diff] [blame] | 1761 | |
Denis Vlasenko | 8f8f268 | 2006-10-03 21:00:43 +0000 | [diff] [blame] | 1762 | extern const char *applet_name; |
Denys Vlasenko | 0004e99 | 2010-09-01 12:01:17 +0200 | [diff] [blame] | 1763 | |
| 1764 | /* Some older linkers don't perform string merging, we used to have common strings |
| 1765 | * as global arrays to do it by hand. But: |
| 1766 | * (1) newer linkers do it themselves, |
| 1767 | * (2) however, they DONT merge string constants with global arrays, |
| 1768 | * even if the value is the same (!). Thus global arrays actually |
| 1769 | * increased size a bit: for example, "/etc/passwd" string from libc |
| 1770 | * wasn't merged with bb_path_passwd_file[] array! |
| 1771 | * Therefore now we use #defines. |
| 1772 | */ |
Bernhard Reutner-Fischer | 78e1d58 | 2008-01-13 17:52:53 +0000 | [diff] [blame] | 1773 | /* "BusyBox vN.N.N (timestamp or extra_version)" */ |
Aurelien Jarno | d3a4239 | 2012-07-24 16:28:34 +0200 | [diff] [blame] | 1774 | extern const char bb_banner[] ALIGN1; |
| 1775 | extern const char bb_msg_memory_exhausted[] ALIGN1; |
| 1776 | extern const char bb_msg_invalid_date[] ALIGN1; |
Denys Vlasenko | 0004e99 | 2010-09-01 12:01:17 +0200 | [diff] [blame] | 1777 | #define bb_msg_read_error "read error" |
| 1778 | #define bb_msg_write_error "write error" |
Aurelien Jarno | d3a4239 | 2012-07-24 16:28:34 +0200 | [diff] [blame] | 1779 | extern const char bb_msg_unknown[] ALIGN1; |
| 1780 | extern const char bb_msg_can_not_create_raw_socket[] ALIGN1; |
| 1781 | extern const char bb_msg_perm_denied_are_you_root[] ALIGN1; |
| 1782 | extern const char bb_msg_you_must_be_root[] ALIGN1; |
| 1783 | extern const char bb_msg_requires_arg[] ALIGN1; |
Denys Vlasenko | 0f296a3 | 2015-10-14 13:21:01 +0200 | [diff] [blame] | 1784 | extern const char bb_msg_invalid_arg_to[] ALIGN1; |
Aurelien Jarno | d3a4239 | 2012-07-24 16:28:34 +0200 | [diff] [blame] | 1785 | extern const char bb_msg_standard_input[] ALIGN1; |
| 1786 | extern const char bb_msg_standard_output[] ALIGN1; |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 1787 | |
Denis Vlasenko | 98c0bba | 2007-01-26 23:31:05 +0000 | [diff] [blame] | 1788 | /* NB: (bb_hexdigits_upcase[i] | 0x20) -> lowercase hex digit */ |
Aurelien Jarno | d3a4239 | 2012-07-24 16:28:34 +0200 | [diff] [blame] | 1789 | extern const char bb_hexdigits_upcase[] ALIGN1; |
Denis Vlasenko | 7ca3921 | 2006-11-21 20:34:21 +0000 | [diff] [blame] | 1790 | |
Aurelien Jarno | d3a4239 | 2012-07-24 16:28:34 +0200 | [diff] [blame] | 1791 | extern const char bb_path_wtmp_file[] ALIGN1; |
Denys Vlasenko | 0004e99 | 2010-09-01 12:01:17 +0200 | [diff] [blame] | 1792 | |
| 1793 | /* Busybox mount uses either /proc/mounts or /etc/mtab to |
| 1794 | * get the list of currently mounted filesystems */ |
| 1795 | #define bb_path_mtab_file IF_FEATURE_MTAB_SUPPORT("/etc/mtab")IF_NOT_FEATURE_MTAB_SUPPORT("/proc/mounts") |
| 1796 | |
Tito Ragusa | ad3d72f | 2011-01-16 23:39:45 +0100 | [diff] [blame] | 1797 | #define bb_path_passwd_file _PATH_PASSWD |
| 1798 | #define bb_path_group_file _PATH_GROUP |
| 1799 | #define bb_path_shadow_file _PATH_SHADOW |
| 1800 | #define bb_path_gshadow_file _PATH_GSHADOW |
Denys Vlasenko | 0004e99 | 2010-09-01 12:01:17 +0200 | [diff] [blame] | 1801 | |
| 1802 | #define bb_path_motd_file "/etc/motd" |
| 1803 | |
| 1804 | #define bb_dev_null "/dev/null" |
Aurelien Jarno | d3a4239 | 2012-07-24 16:28:34 +0200 | [diff] [blame] | 1805 | extern const char bb_busybox_exec_path[] ALIGN1; |
Denis Vlasenko | 15611bb | 2007-06-12 08:52:02 +0000 | [diff] [blame] | 1806 | /* util-linux manpage says /sbin:/bin:/usr/sbin:/usr/bin, |
| 1807 | * but I want to save a few bytes here */ |
Aurelien Jarno | d3a4239 | 2012-07-24 16:28:34 +0200 | [diff] [blame] | 1808 | extern const char bb_PATH_root_path[] ALIGN1; /* "PATH=/sbin:/usr/sbin:/bin:/usr/bin" */ |
Denis Vlasenko | f5f75c5 | 2007-06-12 22:35:19 +0000 | [diff] [blame] | 1809 | #define bb_default_root_path (bb_PATH_root_path + sizeof("PATH")) |
| 1810 | #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] | 1811 | |
Denis Vlasenko | 703e202 | 2007-01-22 14:12:08 +0000 | [diff] [blame] | 1812 | extern const int const_int_0; |
Denys Vlasenko | c52cbea | 2015-08-24 19:48:03 +0200 | [diff] [blame] | 1813 | //extern const int const_int_1; |
Denis Vlasenko | 703e202 | 2007-01-22 14:12:08 +0000 | [diff] [blame] | 1814 | |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 1815 | |
Denis Vlasenko | 8581863 | 2007-04-19 14:47:11 +0000 | [diff] [blame] | 1816 | /* Providing hard guarantee on minimum size (think of BUFSIZ == 128) */ |
Denis Vlasenko | 74324c8 | 2007-06-04 10:16:52 +0000 | [diff] [blame] | 1817 | enum { COMMON_BUFSIZE = (BUFSIZ >= 256*sizeof(void*) ? BUFSIZ+1 : 256*sizeof(void*)) }; |
| 1818 | extern char bb_common_bufsiz1[COMMON_BUFSIZE]; |
Denis Vlasenko | 972288e | 2007-03-15 00:57:01 +0000 | [diff] [blame] | 1819 | /* This struct is deliberately not defined. */ |
| 1820 | /* See docs/keep_data_small.txt */ |
| 1821 | struct globals; |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 1822 | /* '*const' ptr makes gcc optimize code much better. |
Denis Vlasenko | e324184 | 2007-08-13 10:36:25 +0000 | [diff] [blame] | 1823 | * Magic prevents ptr_to_globals from going into rodata. |
Denis Vlasenko | 574f2f4 | 2008-02-27 18:41:59 +0000 | [diff] [blame] | 1824 | * 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] | 1825 | extern struct globals *const ptr_to_globals; |
Denis Vlasenko | 574f2f4 | 2008-02-27 18:41:59 +0000 | [diff] [blame] | 1826 | /* 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] | 1827 | #define barrier() __asm__ __volatile__("":::"memory") |
Denis Vlasenko | 574f2f4 | 2008-02-27 18:41:59 +0000 | [diff] [blame] | 1828 | #define SET_PTR_TO_GLOBALS(x) do { \ |
Denys Vlasenko | 90a9904 | 2009-09-06 02:36:23 +0200 | [diff] [blame] | 1829 | (*(struct globals**)&ptr_to_globals) = (void*)(x); \ |
Denis Vlasenko | 574f2f4 | 2008-02-27 18:41:59 +0000 | [diff] [blame] | 1830 | barrier(); \ |
| 1831 | } while (0) |
Guilherme Maciel Ferreira | 840ef17 | 2013-10-16 14:43:30 +0200 | [diff] [blame] | 1832 | #define FREE_PTR_TO_GLOBALS() do { \ |
| 1833 | if (ENABLE_FEATURE_CLEAN_UP) { \ |
| 1834 | free(ptr_to_globals); \ |
| 1835 | } \ |
| 1836 | } while (0) |
Denis Vlasenko | 8d9f495 | 2007-04-08 15:08:42 +0000 | [diff] [blame] | 1837 | |
Denis Vlasenko | dca0b70 | 2006-10-27 09:05:02 +0000 | [diff] [blame] | 1838 | /* You can change LIBBB_DEFAULT_LOGIN_SHELL, but don't use it, |
| 1839 | * use bb_default_login_shell and following defines. |
| 1840 | * If you change LIBBB_DEFAULT_LOGIN_SHELL, |
| 1841 | * don't forget to change increment constant. */ |
Ladislav Michl | a73b87e | 2010-06-27 03:23:31 +0200 | [diff] [blame] | 1842 | #define LIBBB_DEFAULT_LOGIN_SHELL "-/bin/sh" |
Aurelien Jarno | d3a4239 | 2012-07-24 16:28:34 +0200 | [diff] [blame] | 1843 | extern const char bb_default_login_shell[] ALIGN1; |
Glenn L McGrath | dc4e75e | 2003-09-02 02:36:18 +0000 | [diff] [blame] | 1844 | /* "/bin/sh" */ |
Ladislav Michl | a73b87e | 2010-06-27 03:23:31 +0200 | [diff] [blame] | 1845 | #define DEFAULT_SHELL (bb_default_login_shell+1) |
Glenn L McGrath | dc4e75e | 2003-09-02 02:36:18 +0000 | [diff] [blame] | 1846 | /* "sh" */ |
Ladislav Michl | a73b87e | 2010-06-27 03:23:31 +0200 | [diff] [blame] | 1847 | #define DEFAULT_SHELL_SHORT_NAME (bb_default_login_shell+6) |
Glenn L McGrath | dc4e75e | 2003-09-02 02:36:18 +0000 | [diff] [blame] | 1848 | |
Jeremie Koenig | 816ed97 | 2010-05-27 15:46:29 +0200 | [diff] [blame] | 1849 | /* The following devices are the same on all systems. */ |
| 1850 | #define CURRENT_TTY "/dev/tty" |
| 1851 | #define DEV_CONSOLE "/dev/console" |
| 1852 | |
| 1853 | #if defined(__FreeBSD_kernel__) |
| 1854 | # define CURRENT_VC CURRENT_TTY |
| 1855 | # define VC_1 "/dev/ttyv0" |
| 1856 | # define VC_2 "/dev/ttyv1" |
| 1857 | # define VC_3 "/dev/ttyv2" |
| 1858 | # define VC_4 "/dev/ttyv3" |
| 1859 | # define VC_5 "/dev/ttyv4" |
| 1860 | # define VC_FORMAT "/dev/ttyv%d" |
| 1861 | #elif defined(__GNU__) |
| 1862 | # define CURRENT_VC CURRENT_TTY |
| 1863 | # define VC_1 "/dev/tty1" |
| 1864 | # define VC_2 "/dev/tty2" |
| 1865 | # define VC_3 "/dev/tty3" |
| 1866 | # define VC_4 "/dev/tty4" |
| 1867 | # define VC_5 "/dev/tty5" |
| 1868 | # define VC_FORMAT "/dev/tty%d" |
Denys Vlasenko | 1c26e05 | 2010-10-24 02:35:17 +0200 | [diff] [blame] | 1869 | #elif ENABLE_FEATURE_DEVFS |
| 1870 | /*Linux, obsolete devfs names */ |
Matt Kraai | 439e3df | 2001-07-23 14:52:08 +0000 | [diff] [blame] | 1871 | # define CURRENT_VC "/dev/vc/0" |
| 1872 | # define VC_1 "/dev/vc/1" |
| 1873 | # define VC_2 "/dev/vc/2" |
| 1874 | # define VC_3 "/dev/vc/3" |
| 1875 | # define VC_4 "/dev/vc/4" |
| 1876 | # define VC_5 "/dev/vc/5" |
Matt Kraai | 439e3df | 2001-07-23 14:52:08 +0000 | [diff] [blame] | 1877 | # define VC_FORMAT "/dev/vc/%d" |
Denys Vlasenko | 4928e9f | 2013-06-27 03:45:16 +0200 | [diff] [blame] | 1878 | # define LOOP_FORMAT "/dev/loop/%u" |
Denis Vlasenko | 0e2c9fb | 2007-08-03 14:16:24 +0000 | [diff] [blame] | 1879 | # define LOOP_NAMESIZE (sizeof("/dev/loop/") + sizeof(int)*3 + 1) |
Denis Vlasenko | 0b193a7 | 2006-09-29 21:47:11 +0000 | [diff] [blame] | 1880 | # define LOOP_NAME "/dev/loop/" |
Eric Andersen | 5f28455 | 2003-11-14 03:11:29 +0000 | [diff] [blame] | 1881 | # define FB_0 "/dev/fb/0" |
Matt Kraai | 439e3df | 2001-07-23 14:52:08 +0000 | [diff] [blame] | 1882 | #else |
Denys Vlasenko | 1c26e05 | 2010-10-24 02:35:17 +0200 | [diff] [blame] | 1883 | /*Linux, normal names */ |
Matt Kraai | 439e3df | 2001-07-23 14:52:08 +0000 | [diff] [blame] | 1884 | # define CURRENT_VC "/dev/tty0" |
| 1885 | # define VC_1 "/dev/tty1" |
| 1886 | # define VC_2 "/dev/tty2" |
| 1887 | # define VC_3 "/dev/tty3" |
| 1888 | # define VC_4 "/dev/tty4" |
| 1889 | # define VC_5 "/dev/tty5" |
Matt Kraai | 439e3df | 2001-07-23 14:52:08 +0000 | [diff] [blame] | 1890 | # define VC_FORMAT "/dev/tty%d" |
Denys Vlasenko | 4928e9f | 2013-06-27 03:45:16 +0200 | [diff] [blame] | 1891 | # define LOOP_FORMAT "/dev/loop%u" |
Denis Vlasenko | 0e2c9fb | 2007-08-03 14:16:24 +0000 | [diff] [blame] | 1892 | # define LOOP_NAMESIZE (sizeof("/dev/loop") + sizeof(int)*3 + 1) |
Denis Vlasenko | 0b193a7 | 2006-09-29 21:47:11 +0000 | [diff] [blame] | 1893 | # define LOOP_NAME "/dev/loop" |
Eric Andersen | 5f28455 | 2003-11-14 03:11:29 +0000 | [diff] [blame] | 1894 | # define FB_0 "/dev/fb0" |
Matt Kraai | 439e3df | 2001-07-23 14:52:08 +0000 | [diff] [blame] | 1895 | #endif |
| 1896 | |
Rob Landley | c57ec37 | 2006-04-10 17:07:15 +0000 | [diff] [blame] | 1897 | |
Denys Vlasenko | 9d57a80 | 2009-10-23 14:24:44 +0200 | [diff] [blame] | 1898 | #define ARRAY_SIZE(x) ((unsigned)(sizeof(x) / sizeof((x)[0]))) |
Denys Vlasenko | ab3964d | 2015-10-13 14:50:20 +0200 | [diff] [blame] | 1899 | #define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)])) |
Denys Vlasenko | 9d57a80 | 2009-10-23 14:24:44 +0200 | [diff] [blame] | 1900 | |
Rob Landley | b623a54 | 2006-05-31 22:09:03 +0000 | [diff] [blame] | 1901 | |
Denys Vlasenko | a7a1fd0 | 2009-10-23 13:05:03 +0200 | [diff] [blame] | 1902 | /* We redefine ctype macros. Unicode-correct handling of char types |
| 1903 | * can't be done with such byte-oriented operations anyway, |
| 1904 | * we don't lose anything. |
| 1905 | */ |
Rob Landley | 4ae905a | 2006-07-06 17:22:54 +0000 | [diff] [blame] | 1906 | #undef isalnum |
| 1907 | #undef isalpha |
| 1908 | #undef isascii |
| 1909 | #undef isblank |
| 1910 | #undef iscntrl |
Denys Vlasenko | a7a1fd0 | 2009-10-23 13:05:03 +0200 | [diff] [blame] | 1911 | #undef isdigit |
Rob Landley | 4ae905a | 2006-07-06 17:22:54 +0000 | [diff] [blame] | 1912 | #undef isgraph |
| 1913 | #undef islower |
| 1914 | #undef isprint |
Denys Vlasenko | a7a1fd0 | 2009-10-23 13:05:03 +0200 | [diff] [blame] | 1915 | #undef ispunct |
Denys Vlasenko | f2cbb03 | 2009-10-23 03:16:08 +0200 | [diff] [blame] | 1916 | #undef isspace |
Denys Vlasenko | a7a1fd0 | 2009-10-23 13:05:03 +0200 | [diff] [blame] | 1917 | #undef isupper |
| 1918 | #undef isxdigit |
| 1919 | #undef toupper |
| 1920 | #undef tolower |
Rob Landley | 4ae905a | 2006-07-06 17:22:54 +0000 | [diff] [blame] | 1921 | |
Denys Vlasenko | a7a1fd0 | 2009-10-23 13:05:03 +0200 | [diff] [blame] | 1922 | /* We save ~500 bytes on isdigit alone. |
Denys Vlasenko | 7b4cd6f | 2009-10-23 02:22:03 +0200 | [diff] [blame] | 1923 | * BTW, x86 likes (unsigned char) cast more than (unsigned). */ |
Denys Vlasenko | 8684cbb | 2009-11-18 11:34:43 +0100 | [diff] [blame] | 1924 | |
| 1925 | /* These work the same for ASCII and Unicode, |
| 1926 | * assuming no one asks "is this a *Unicode* letter?" using isalpha(letter) */ |
Denys Vlasenko | f2cbb03 | 2009-10-23 03:16:08 +0200 | [diff] [blame] | 1927 | #define isascii(a) ((unsigned char)(a) <= 0x7f) |
Denys Vlasenko | 8684cbb | 2009-11-18 11:34:43 +0100 | [diff] [blame] | 1928 | #define isdigit(a) ((unsigned char)((a) - '0') <= 9) |
Denys Vlasenko | f2cbb03 | 2009-10-23 03:16:08 +0200 | [diff] [blame] | 1929 | #define isupper(a) ((unsigned char)((a) - 'A') <= ('Z' - 'A')) |
| 1930 | #define islower(a) ((unsigned char)((a) - 'a') <= ('z' - 'a')) |
Denys Vlasenko | a7a1fd0 | 2009-10-23 13:05:03 +0200 | [diff] [blame] | 1931 | #define isalpha(a) ((unsigned char)(((a)|0x20) - 'a') <= ('z' - 'a')) |
Denys Vlasenko | f2cbb03 | 2009-10-23 03:16:08 +0200 | [diff] [blame] | 1932 | #define isblank(a) ({ unsigned char bb__isblank = (a); bb__isblank == ' ' || bb__isblank == '\t'; }) |
| 1933 | #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] | 1934 | /* 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] | 1935 | * "\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] | 1936 | */ |
Denys Vlasenko | f125b6d | 2009-10-22 19:41:45 +0200 | [diff] [blame] | 1937 | #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] | 1938 | // Unsafe wrt NUL: #define ispunct(a) (strchr("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~", (a)) != NULL) |
| 1939 | #define ispunct(a) (strchrnul("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~", (a))[0]) |
| 1940 | // 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] | 1941 | #define isalnum(a) bb_ascii_isalnum(a) |
| 1942 | static ALWAYS_INLINE int bb_ascii_isalnum(unsigned char a) |
| 1943 | { |
| 1944 | unsigned char b = a - '0'; |
| 1945 | if (b <= 9) |
| 1946 | return (b <= 9); |
| 1947 | b = (a|0x20) - 'a'; |
| 1948 | return b <= 'z' - 'a'; |
| 1949 | } |
| 1950 | #define isxdigit(a) bb_ascii_isxdigit(a) |
| 1951 | static ALWAYS_INLINE int bb_ascii_isxdigit(unsigned char a) |
| 1952 | { |
| 1953 | unsigned char b = a - '0'; |
| 1954 | if (b <= 9) |
| 1955 | return (b <= 9); |
| 1956 | b = (a|0x20) - 'a'; |
| 1957 | return b <= 'f' - 'a'; |
| 1958 | } |
Denys Vlasenko | a7a1fd0 | 2009-10-23 13:05:03 +0200 | [diff] [blame] | 1959 | #define toupper(a) bb_ascii_toupper(a) |
| 1960 | static ALWAYS_INLINE unsigned char bb_ascii_toupper(unsigned char a) |
| 1961 | { |
| 1962 | unsigned char b = a - 'a'; |
| 1963 | if (b <= ('z' - 'a')) |
| 1964 | a -= 'a' - 'A'; |
| 1965 | return a; |
| 1966 | } |
| 1967 | #define tolower(a) bb_ascii_tolower(a) |
| 1968 | static ALWAYS_INLINE unsigned char bb_ascii_tolower(unsigned char a) |
| 1969 | { |
| 1970 | unsigned char b = a - 'A'; |
| 1971 | if (b <= ('Z' - 'A')) |
| 1972 | a += 'a' - 'A'; |
| 1973 | return a; |
| 1974 | } |
Denys Vlasenko | f125b6d | 2009-10-22 19:41:45 +0200 | [diff] [blame] | 1975 | |
Denys Vlasenko | 8684cbb | 2009-11-18 11:34:43 +0100 | [diff] [blame] | 1976 | /* In ASCII and Unicode, these are likely to be very different. |
| 1977 | * Let's prevent ambiguous usage from the start */ |
| 1978 | #define isgraph(a) isgraph_is_ambiguous_dont_use(a) |
| 1979 | #define isprint(a) isprint_is_ambiguous_dont_use(a) |
| 1980 | /* NB: must not treat EOF as isgraph or isprint */ |
| 1981 | #define isgraph_asciionly(a) ((unsigned)((a) - 0x21) <= 0x7e - 0x21) |
| 1982 | #define isprint_asciionly(a) ((unsigned)((a) - 0x20) <= 0x7e - 0x20) |
| 1983 | |
Denys Vlasenko | f2cbb03 | 2009-10-23 03:16:08 +0200 | [diff] [blame] | 1984 | |
Bartosz Golaszewski | 3ed81cf | 2014-06-22 16:30:41 +0200 | [diff] [blame] | 1985 | /* Simple unit-testing framework */ |
| 1986 | |
| 1987 | typedef void (*bbunit_testfunc)(void); |
| 1988 | |
| 1989 | struct bbunit_listelem { |
Bartosz Golaszewski | 3ed81cf | 2014-06-22 16:30:41 +0200 | [diff] [blame] | 1990 | const char* name; |
| 1991 | bbunit_testfunc testfunc; |
| 1992 | }; |
| 1993 | |
| 1994 | void bbunit_registertest(struct bbunit_listelem* test); |
| 1995 | void bbunit_settestfailed(void); |
| 1996 | |
| 1997 | #define BBUNIT_DEFINE_TEST(NAME) \ |
| 1998 | static void bbunit_##NAME##_test(void); \ |
| 1999 | static struct bbunit_listelem bbunit_##NAME##_elem = { \ |
| 2000 | .name = #NAME, \ |
| 2001 | .testfunc = bbunit_##NAME##_test, \ |
| 2002 | }; \ |
Bartosz Golaszewski | bf0f2c7 | 2014-06-26 14:31:05 +0200 | [diff] [blame] | 2003 | static void INIT_FUNC bbunit_##NAME##_register(void) \ |
Bartosz Golaszewski | 3ed81cf | 2014-06-22 16:30:41 +0200 | [diff] [blame] | 2004 | { \ |
| 2005 | bbunit_registertest(&bbunit_##NAME##_elem); \ |
| 2006 | } \ |
| 2007 | static void bbunit_##NAME##_test(void) |
| 2008 | |
| 2009 | /* |
| 2010 | * Both 'goto bbunit_end' and 'break' are here only to get rid |
| 2011 | * of compiler warnings. |
| 2012 | */ |
| 2013 | #define BBUNIT_ENDTEST \ |
| 2014 | do { \ |
| 2015 | goto bbunit_end; \ |
| 2016 | bbunit_end: \ |
| 2017 | break; \ |
| 2018 | } while (0) |
| 2019 | |
| 2020 | #define BBUNIT_PRINTASSERTFAIL \ |
| 2021 | do { \ |
| 2022 | bb_error_msg( \ |
| 2023 | "[ERROR] Assertion failed in file %s, line %d", \ |
| 2024 | __FILE__, __LINE__); \ |
| 2025 | } while (0) |
| 2026 | |
| 2027 | #define BBUNIT_ASSERTION_FAILED \ |
| 2028 | do { \ |
| 2029 | bbunit_settestfailed(); \ |
| 2030 | goto bbunit_end; \ |
| 2031 | } while (0) |
| 2032 | |
| 2033 | /* |
| 2034 | * Assertions. |
| 2035 | * For now we only offer assertions which cause tests to fail |
| 2036 | * immediately. In the future 'expects' might be added too - |
| 2037 | * similar to those offered by the gtest framework. |
| 2038 | */ |
| 2039 | #define BBUNIT_ASSERT_EQ(EXPECTED, ACTUAL) \ |
| 2040 | do { \ |
| 2041 | if ((EXPECTED) != (ACTUAL)) { \ |
| 2042 | BBUNIT_PRINTASSERTFAIL; \ |
| 2043 | bb_error_msg("[ERROR] '%s' isn't equal to '%s'", \ |
| 2044 | #EXPECTED, #ACTUAL); \ |
| 2045 | BBUNIT_ASSERTION_FAILED; \ |
| 2046 | } \ |
| 2047 | } while (0) |
| 2048 | |
| 2049 | #define BBUNIT_ASSERT_NOTEQ(EXPECTED, ACTUAL) \ |
| 2050 | do { \ |
| 2051 | if ((EXPECTED) == (ACTUAL)) { \ |
| 2052 | BBUNIT_PRINTASSERTFAIL; \ |
| 2053 | bb_error_msg("[ERROR] '%s' is equal to '%s'", \ |
| 2054 | #EXPECTED, #ACTUAL); \ |
| 2055 | BBUNIT_ASSERTION_FAILED; \ |
| 2056 | } \ |
| 2057 | } while (0) |
| 2058 | |
| 2059 | #define BBUNIT_ASSERT_NOTNULL(PTR) \ |
| 2060 | do { \ |
| 2061 | if ((PTR) == NULL) { \ |
| 2062 | BBUNIT_PRINTASSERTFAIL; \ |
| 2063 | bb_error_msg("[ERROR] '%s' is NULL!", #PTR); \ |
| 2064 | BBUNIT_ASSERTION_FAILED; \ |
| 2065 | } \ |
| 2066 | } while (0) |
| 2067 | |
| 2068 | #define BBUNIT_ASSERT_NULL(PTR) \ |
| 2069 | do { \ |
| 2070 | if ((PTR) != NULL) { \ |
| 2071 | BBUNIT_PRINTASSERTFAIL; \ |
| 2072 | bb_error_msg("[ERROR] '%s' is not NULL!", #PTR); \ |
| 2073 | BBUNIT_ASSERTION_FAILED; \ |
| 2074 | } \ |
| 2075 | } while (0) |
| 2076 | |
| 2077 | #define BBUNIT_ASSERT_FALSE(STATEMENT) \ |
| 2078 | do { \ |
| 2079 | if ((STATEMENT)) { \ |
| 2080 | BBUNIT_PRINTASSERTFAIL; \ |
| 2081 | bb_error_msg("[ERROR] Statement '%s' evaluated to true!", \ |
| 2082 | #STATEMENT); \ |
| 2083 | BBUNIT_ASSERTION_FAILED; \ |
| 2084 | } \ |
| 2085 | } while (0) |
| 2086 | |
| 2087 | #define BBUNIT_ASSERT_TRUE(STATEMENT) \ |
| 2088 | do { \ |
| 2089 | if (!(STATEMENT)) { \ |
| 2090 | BBUNIT_PRINTASSERTFAIL; \ |
| 2091 | bb_error_msg("[ERROR] Statement '%s' evaluated to false!", \ |
| 2092 | #STATEMENT); \ |
| 2093 | BBUNIT_ASSERTION_FAILED; \ |
| 2094 | } \ |
| 2095 | } while (0) |
| 2096 | |
| 2097 | #define BBUNIT_ASSERT_STREQ(STR1, STR2) \ |
| 2098 | do { \ |
| 2099 | if (strcmp(STR1, STR2) != 0) { \ |
| 2100 | BBUNIT_PRINTASSERTFAIL; \ |
| 2101 | bb_error_msg("[ERROR] Strings '%s' and '%s' " \ |
| 2102 | "are not the same", STR1, STR2); \ |
| 2103 | BBUNIT_ASSERTION_FAILED; \ |
| 2104 | } \ |
| 2105 | } while (0) |
| 2106 | |
| 2107 | #define BBUNIT_ASSERT_STRNOTEQ(STR1, STR2) \ |
| 2108 | do { \ |
| 2109 | if (strcmp(STR1, STR2) == 0) { \ |
| 2110 | BBUNIT_PRINTASSERTFAIL; \ |
| 2111 | bb_error_msg("[ERROR] Strings '%s' and '%s' " \ |
| 2112 | "are the same, but were " \ |
| 2113 | "expected to differ", STR1, STR2); \ |
| 2114 | BBUNIT_ASSERTION_FAILED; \ |
| 2115 | } \ |
| 2116 | } while (0) |
| 2117 | |
| 2118 | |
Denis Vlasenko | f81e8db | 2009-04-09 12:35:13 +0000 | [diff] [blame] | 2119 | POP_SAVED_FUNCTION_VISIBILITY |
| 2120 | |
Bernhard Reutner-Fischer | 73561cc | 2006-08-28 23:31:54 +0000 | [diff] [blame] | 2121 | #endif |