1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * Busybox main internal header file
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4 | *
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5 | * Based in part on code from sash, Copyright (c) 1999 by David I. Bell
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6 | * Permission has been granted to redistribute this code under GPL.
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7 | *
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8 | * Licensed under GPLv2, see file LICENSE in this source tree.
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9 | */
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10 | #ifndef LIBBB_H
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11 | #define LIBBB_H 1
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12 |
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13 | #define BB_VER "1.26.2"
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14 | #define BB_BT "2017/3/16 10:00:00"
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15 | #include "autoconf.h"
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16 |
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17 | #define fgets_unlocked fgets
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18 | #define getchar_unlocked getchar
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19 | #define fputs_unlocked fputs
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20 | #define putchar_unlocked putchar
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21 | #define ferror_unlocked ferror
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22 | #define fileno_unlocked fileno
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23 |
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24 | #include "platform.h"
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25 |
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26 | #include <ctype.h>
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27 | #include "dirent.h"
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28 | #include <errno.h>
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29 | #include <fcntl.h>
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30 | #include <inttypes.h>
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31 | #include <netdb.h>
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32 | #include <setjmp.h>
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33 | #include <signal.h>
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34 | #include <paths.h>
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35 | #if defined __UCLIBC__ /* TODO: and glibc? */
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36 | /* use inlined versions of these: */
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37 | # define sigfillset(s) __sigfillset(s)
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38 | # define sigemptyset(s) __sigemptyset(s)
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39 | # define sigisemptyset(s) __sigisemptyset(s)
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40 | #endif
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41 | #include <stdint.h>
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42 | #include <stdio.h>
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43 | #include <stdlib.h>
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44 | #include <stdarg.h>
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45 | #include <stddef.h>
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46 | #include <string.h>
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47 | /* There are two incompatible basename's, let's not use them! */
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48 | /* See the dirname/basename man page for details */
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49 | #include <libgen.h> /* dirname,basename */
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50 | #undef basename
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51 | #define basename dont_use_basename
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52 | #include <poll.h>
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53 | #include <sys/ioctl.h>
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54 | #include <sys/mman.h>
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55 | #include <sys/socket.h>
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56 | #include <sys/stat.h>
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57 | #include <sys/time.h>
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58 | #include <sys/types.h>
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59 | #if !defined(major) || defined(__GLIBC__)
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60 | # include <sys/sysmacros.h>
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61 | #endif
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62 | #include <sys/wait.h>
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63 | #include <termios.h>
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64 | #include <time.h>
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65 | #include <sys/param.h>
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66 | #include <pwd.h>
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67 | #include <grp.h>
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68 | #if ENABLE_FEATURE_SHADOWPASSWDS
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69 | # if !ENABLE_USE_BB_SHADOW
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70 | /* If using busybox's shadow implementation, do not include the shadow.h
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71 | * header as the toolchain may not provide it at all.
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72 | */
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73 | # include <shadow.h>
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74 | # endif
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75 | #endif
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76 | #if defined(ANDROID) || defined(__ANDROID__)
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77 | # define endpwent() ((void)0)
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78 | # define endgrent() ((void)0)
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79 | #endif
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80 | #ifdef HAVE_MNTENT_H
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81 | # include <mntent.h>
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82 | #endif
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83 | #ifdef HAVE_SYS_STATFS_H
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84 | # include <sys/statfs.h>
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85 | #endif
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86 |
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87 | extern char *strchrnul(const char *, int);
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88 | extern void *memrchr(const void *s, int c, size_t n);
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89 |
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90 | /* Don't do this here:
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91 | * #include <sys/sysinfo.h>
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92 | * Some linux/ includes pull in conflicting definition
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93 | * of struct sysinfo (only in some toolchanins), which breaks build.
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94 | * Include sys/sysinfo.h only in those files which need it.
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95 | */
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96 | #if ENABLE_SELINUX
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97 | # include <selinux/selinux.h>
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98 | # include <selinux/context.h>
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99 | #endif
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100 | #if ENABLE_FEATURE_UTMP
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101 | # if defined __UCLIBC__ && ( \
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102 | (UCLIBC_VERSION >= KERNEL_VERSION(0, 9, 32) \
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103 | && UCLIBC_VERSION < KERNEL_VERSION(0, 9, 34) \
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104 | && defined __UCLIBC_HAS_UTMPX__ \
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105 | ) || ( \
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106 | UCLIBC_VERSION >= KERNEL_VERSION(0, 9, 34) \
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107 | ) \
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108 | )
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109 | # include <utmpx.h>
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110 | # elif defined __UCLIBC__
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111 | # include <utmp.h>
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112 | # define utmpx utmp
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113 | # define setutxent setutent
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114 | # define endutxent endutent
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115 | # define getutxent getutent
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116 | # define getutxid getutid
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117 | # define getutxline getutline
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118 | # define pututxline pututline
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119 | # define utmpxname utmpname
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120 | # define updwtmpx updwtmp
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121 | # define _PATH_UTMPX _PATH_UTMP
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122 | # else
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123 | # include <utmp.h>
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124 | # include <utmpx.h>
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125 | # if defined _PATH_UTMP && !defined _PATH_UTMPX
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126 | # define _PATH_UTMPX _PATH_UTMP
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127 | # endif
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128 | # endif
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129 | #endif
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130 | #if ENABLE_LOCALE_SUPPORT
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131 | # include <locale.h>
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132 | #else
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133 | # define setlocale(x,y) ((void)0)
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134 | #endif
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135 | #ifdef DMALLOC
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136 | # include <dmalloc.h>
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137 | #endif
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138 | /* Just in case libc doesn't define some of these... */
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139 | #ifndef _PATH_PASSWD
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140 | #define _PATH_PASSWD "/etc/passwd"
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141 | #endif
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142 | #ifndef _PATH_GROUP
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143 | #define _PATH_GROUP "/etc/group"
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144 | #endif
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145 | #ifndef _PATH_SHADOW
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146 | #define _PATH_SHADOW "/etc/shadow"
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147 | #endif
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148 | #ifndef _PATH_GSHADOW
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149 | #define _PATH_GSHADOW "/etc/gshadow"
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150 | #endif
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151 | #if defined __FreeBSD__ || defined __OpenBSD__
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152 | # include <netinet/in.h>
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153 | # include <arpa/inet.h>
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154 | #elif defined __APPLE__
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155 | # include <netinet/in.h>
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156 | #else
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157 | # include <arpa/inet.h>
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158 | //This breaks on bionic:
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159 | //# if !defined(__socklen_t_defined) && !defined(_SOCKLEN_T_DECLARED)
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160 | ///* We #define socklen_t *after* includes, otherwise we get
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161 | // * typedef redefinition errors from system headers
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162 | // * (in case "is it defined already" detection above failed)
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163 | // */
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164 | //# define socklen_t bb_socklen_t
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165 | // typedef unsigned socklen_t;
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166 | //# endif
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167 | //if this is still needed, add a fix along the lines of
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168 | // ifdef SPECIFIC_BROKEN_LIBC_CHECK / typedef socklen_t / endif
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169 | //in platform.h instead!
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170 | #endif
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171 | #ifndef HAVE_CLEARENV
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172 | # define clearenv() do { if (environ) environ[0] = NULL; } while (0)
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173 | #endif
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174 | #ifndef HAVE_FDATASYNC
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175 | # define fdatasync fsync
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176 | #endif
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177 | #ifndef HAVE_XTABS
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178 | # define XTABS TAB3
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179 | #endif
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180 |
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181 |
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182 | /* Some libc's forget to declare these, do it ourself */
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183 |
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184 | extern char **environ;
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185 | #if defined(__GLIBC__) && __GLIBC__ < 2
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186 | int vdprintf(int d, const char *format, va_list ap);
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187 | #endif
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188 | /* klogctl is in libc's klog.h, but we cheat and not #include that */
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189 | int klogctl(int type, char *b, int len);
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190 | #ifndef PATH_MAX
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191 | # define PATH_MAX 256
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192 | #endif
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193 | #ifndef BUFSIZ
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194 | # define BUFSIZ 4096
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195 | #endif
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196 |
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197 |
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198 | /* Busybox does not use threads, we can speed up stdio. */
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199 | #ifdef HAVE_UNLOCKED_STDIO
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200 | # undef getc
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201 | # define getc(stream) getc_unlocked(stream)
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202 | # undef getchar
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203 | # define getchar() getchar_unlocked()
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204 | # undef putc
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205 | # define putc(c,stream) putc_unlocked(c,stream)
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206 | # undef putchar
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207 | # define putchar(c) putchar_unlocked(c)
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208 | # undef fgetc
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209 | # define fgetc(stream) getc_unlocked(stream)
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210 | # undef fputc
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211 | # define fputc(c,stream) putc_unlocked(c,stream)
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212 | #endif
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213 | /* Above functions are required by POSIX.1-2008, below ones are extensions */
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214 | #ifdef HAVE_UNLOCKED_LINE_OPS
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215 | # undef fgets
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216 | # define fgets(s,n,stream) fgets_unlocked(s,n,stream)
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217 | # undef fputs
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218 | # define fputs(s,stream) fputs_unlocked(s,stream)
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219 | /* musl <= 1.1.15 does not support fflush_unlocked(NULL) */
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220 | //# undef fflush
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221 | //# define fflush(stream) fflush_unlocked(stream)
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222 | # undef feof
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223 | # define feof(stream) feof_unlocked(stream)
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224 | # undef ferror
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225 | # define ferror(stream) ferror_unlocked(stream)
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226 | # undef fileno
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227 | # define fileno(stream) fileno_unlocked(stream)
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228 | #endif
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229 |
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230 |
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231 | /* Make all declarations hidden (-fvisibility flag only affects definitions) */
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232 | /* (don't include system headers after this until corresponding pop!) */
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233 | PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
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234 |
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235 |
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236 | #if ENABLE_USE_BB_PWD_GRP
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237 | # include "pwd_.h"
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238 | # include "grp_.h"
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239 | #endif
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240 | #if ENABLE_FEATURE_SHADOWPASSWDS
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241 | # if ENABLE_USE_BB_SHADOW
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242 | # include "shadow_.h"
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243 | # endif
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244 | #endif
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245 |
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246 | /* Tested to work correctly with all int types (IIRC :]) */
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247 | #define MAXINT(T) (T)( \
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248 | ((T)-1) > 0 \
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249 | ? (T)-1 \
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250 | : (T)~((T)1 << (sizeof(T)*8-1)) \
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251 | )
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252 |
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253 | #define MININT(T) (T)( \
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254 | ((T)-1) > 0 \
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255 | ? (T)0 \
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256 | : ((T)1 << (sizeof(T)*8-1)) \
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257 | )
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258 |
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259 | /* Large file support */
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260 | /* Note that CONFIG_LFS=y forces bbox to be built with all common ops
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261 | * (stat, lseek etc) mapped to "largefile" variants by libc.
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262 | * Practically it means that open() automatically has O_LARGEFILE added
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263 | * and all filesize/file_offset parameters and struct members are "large"
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264 | * (in today's world - signed 64bit). For full support of large files,
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265 | * we need a few helper #defines (below) and careful use of off_t
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266 | * instead of int/ssize_t. No lseek64(), O_LARGEFILE etc necessary */
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267 | #if ENABLE_LFS
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268 | /* CONFIG_LFS is on */
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269 | # if ULONG_MAX > 0xffffffff
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270 | /* "long" is long enough on this system */
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271 | typedef unsigned long uoff_t;
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272 | # define XATOOFF(a) xatoul_range((a), 0, LONG_MAX)
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273 | /* usage: sz = BB_STRTOOFF(s, NULL, 10); if (errno || sz < 0) die(); */
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274 | # define BB_STRTOOFF bb_strtoul
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275 | # define STRTOOFF strtoul
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276 | /* usage: printf("size: %"OFF_FMT"d (%"OFF_FMT"x)\n", sz, sz); */
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277 | # define OFF_FMT "l"
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278 | # else
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279 | /* "long" is too short, need "long long" */
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280 | typedef unsigned long long uoff_t;
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281 | # define XATOOFF(a) xatoull_range((a), 0, LLONG_MAX)
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282 | long long FAST_FUNC bb_strtoll(const char *arg, char **endp, int base);
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283 | unsigned long long FAST_FUNC bb_strtoull(const char *arg, char **endp, int base);
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284 | # define BB_STRTOOFF bb_strtoull
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285 | # define STRTOOFF strtoull
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286 | # define OFF_FMT "ll"
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287 | # endif
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288 | #else
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289 | /* CONFIG_LFS is off */
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290 | # if UINT_MAX == 0xffffffff
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291 | /* While sizeof(off_t) == sizeof(int), off_t is typedef'ed to long anyway.
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292 | * gcc will throw warnings on printf("%d", off_t). Crap... */
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293 | typedef unsigned long uoff_t;
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294 | # define XATOOFF(a) xatoi_positive(a)
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295 | # define BB_STRTOOFF bb_strtou
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296 | # define STRTOOFF strtol
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297 | # define OFF_FMT "l"
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298 | # else
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299 | typedef unsigned long uoff_t;
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300 | # define XATOOFF(a) xatoul_range((a), 0, LONG_MAX)
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301 | # define BB_STRTOOFF bb_strtoul
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302 | # define STRTOOFF strtol
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303 | # define OFF_FMT "l"
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304 | # endif
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305 | #endif
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306 | /* scary. better ideas? (but do *test* them first!) */
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307 | #define OFF_T_MAX ((off_t)~((off_t)1 << (sizeof(off_t)*8-1)))
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308 | /* Users report bionic to use 32-bit off_t even if LARGEFILE support is requested.
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309 | * We misdetected that. Don't let it build:
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310 | *
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311 | struct BUG_off_t_size_is_misdetected {
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312 | char BUG_off_t_size_is_misdetected[sizeof(off_t) == sizeof(uoff_t) ? 1 : -1];
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313 | };*/
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314 | long FAST_FUNC bb_strtol(const char *arg, char **endp, int base);
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315 | unsigned long FAST_FUNC bb_strtoul(const char *arg, char **endp, int base);
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316 | #if UINT_MAX != ULONG_MAX
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317 | int FAST_FUNC bb_strtoi(const char *arg, char **endp, int base);
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318 | unsigned FAST_FUNC bb_strtou(const char *arg, char **endp, int base);
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319 | #else
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320 | #define bb_strtoi bb_strtol
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321 | #define bb_strtou bb_strtoul
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322 | #endif
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323 |
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324 | /* Some useful definitions */
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325 | #undef FALSE
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326 | #define FALSE ((int) 0)
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327 | #undef TRUE
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328 | #define TRUE ((int) 1)
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329 | #undef SKIP
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330 | #define SKIP ((int) 2)
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331 |
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332 | /* Macros for min/max. */
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333 | #ifndef MIN
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334 | #define MIN(a,b) (((a)<(b))?(a):(b))
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335 | #endif
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336 |
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337 | #ifndef MAX
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338 | #define MAX(a,b) (((a)>(b))?(a):(b))
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339 | #endif
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340 |
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341 | /* buffer allocation schemes */
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342 | #if ENABLE_FEATURE_BUFFERS_GO_ON_STACK
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343 | #define RESERVE_CONFIG_BUFFER(buffer,len) char buffer[len]
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344 | #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char buffer[len]
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345 | #define RELEASE_CONFIG_BUFFER(buffer) ((void)0)
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346 | #else
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347 | #if ENABLE_FEATURE_BUFFERS_GO_IN_BSS
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348 | #define RESERVE_CONFIG_BUFFER(buffer,len) static char buffer[len]
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349 | #define RESERVE_CONFIG_UBUFFER(buffer,len) static unsigned char buffer[len]
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350 | #define RELEASE_CONFIG_BUFFER(buffer) ((void)0)
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351 | #else
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352 | #define RESERVE_CONFIG_BUFFER(buffer,len) char *buffer = xmalloc(len)
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353 | #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char *buffer = xmalloc(len)
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354 | #define RELEASE_CONFIG_BUFFER(buffer) free(buffer)
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355 | #endif
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356 | #endif
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357 |
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358 | #if defined(__GLIBC__)
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359 | /* glibc uses __errno_location() to get a ptr to errno */
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360 | /* We can just memorize it once - no multithreading in busybox :) */
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361 | extern int *const bb_errno;
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362 | #undef errno
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363 | #define errno (*bb_errno)
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364 | #endif
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365 |
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366 | #if !(ULONG_MAX > 0xffffffff)
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367 | /* Only 32-bit CPUs need this, 64-bit ones use inlined version */
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368 | uint64_t bb_bswap_64(uint64_t x) FAST_FUNC;
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369 | #endif
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370 |
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371 | unsigned long long monotonic_ns(void) FAST_FUNC;
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372 | unsigned long long monotonic_us(void) FAST_FUNC;
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373 | unsigned long long monotonic_ms(void) FAST_FUNC;
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374 | unsigned monotonic_sec(void) FAST_FUNC;
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375 |
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376 | extern void chomp(char *s) FAST_FUNC;
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377 | extern void trim(char *s) FAST_FUNC;
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378 | extern char *skip_whitespace(const char *) FAST_FUNC;
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379 | extern char *skip_non_whitespace(const char *) FAST_FUNC;
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380 | extern char *skip_dev_pfx(const char *tty_name) FAST_FUNC;
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381 |
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382 | extern char *strrstr(const char *haystack, const char *needle) FAST_FUNC;
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383 |
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384 | //TODO: supply a pointer to char[11] buffer (avoid statics)?
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385 | extern const char *bb_mode_string(mode_t mode) FAST_FUNC;
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386 | extern int is_directory(const char *name, int followLinks) FAST_FUNC;
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387 | enum { /* cp.c, mv.c, install.c depend on these values. CAREFUL when changing them! */
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388 | FILEUTILS_PRESERVE_STATUS = 1 << 0, /* -p */
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389 | FILEUTILS_DEREFERENCE = 1 << 1, /* !-d */
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390 | FILEUTILS_RECUR = 1 << 2, /* -R */
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391 | FILEUTILS_FORCE = 1 << 3, /* -f */
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392 | FILEUTILS_INTERACTIVE = 1 << 4, /* -i */
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393 | FILEUTILS_MAKE_HARDLINK = 1 << 5, /* -l */
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394 | FILEUTILS_MAKE_SOFTLINK = 1 << 6, /* -s */
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395 | FILEUTILS_DEREF_SOFTLINK = 1 << 7, /* -L */
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396 | FILEUTILS_DEREFERENCE_L0 = 1 << 8, /* -H */
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397 | /* -a = -pdR (mapped in cp.c) */
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398 | /* -r = -dR (mapped in cp.c) */
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399 | /* -P = -d (mapped in cp.c) */
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400 | FILEUTILS_VERBOSE = (1 << 12) * ENABLE_FEATURE_VERBOSE, /* -v */
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401 | FILEUTILS_UPDATE = 1 << 13, /* -u */
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402 | #if ENABLE_SELINUX
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403 | FILEUTILS_PRESERVE_SECURITY_CONTEXT = 1 << 14, /* -c */
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404 | #endif
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405 | FILEUTILS_RMDEST = 1 << (15 - !ENABLE_SELINUX), /* --remove-destination */
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406 | /*
|
---|
407 | * Hole. cp may have some bits set here,
|
---|
408 | * they should not affect remove_file()/copy_file()
|
---|
409 | */
|
---|
410 | #if ENABLE_SELINUX
|
---|
411 | FILEUTILS_SET_SECURITY_CONTEXT = 1 << 30,
|
---|
412 | #endif
|
---|
413 | FILEUTILS_IGNORE_CHMOD_ERR = 1 << 31,
|
---|
414 | };
|
---|
415 | #define FILEUTILS_CP_OPTSTR "pdRfilsLHarPvu" IF_SELINUX("c")
|
---|
416 | extern int remove_file(const char *path, int flags) FAST_FUNC;
|
---|
417 | /* NB: without FILEUTILS_RECUR in flags, it will basically "cat"
|
---|
418 | * the source, not copy (unless "source" is a directory).
|
---|
419 | * This makes "cp /dev/null file" and "install /dev/null file" (!!!)
|
---|
420 | * work coreutils-compatibly. */
|
---|
421 | extern int copy_file(const char *source, const char *dest, int flags) FAST_FUNC;
|
---|
422 |
|
---|
423 | enum {
|
---|
424 | ACTION_RECURSE = (1 << 0),
|
---|
425 | ACTION_FOLLOWLINKS = (1 << 1),
|
---|
426 | ACTION_FOLLOWLINKS_L0 = (1 << 2),
|
---|
427 | ACTION_DEPTHFIRST = (1 << 3),
|
---|
428 | /*ACTION_REVERSE = (1 << 4), - unused */
|
---|
429 | ACTION_QUIET = (1 << 5),
|
---|
430 | ACTION_DANGLING_OK = (1 << 6),
|
---|
431 | };
|
---|
432 | typedef uint8_t recurse_flags_t;
|
---|
433 | extern int recursive_action(const char *fileName, unsigned flags,
|
---|
434 | int FAST_FUNC (*fileAction)(const char *fileName, struct stat* statbuf, void* userData, int depth),
|
---|
435 | int FAST_FUNC (*dirAction)(const char *fileName, struct stat* statbuf, void* userData, int depth),
|
---|
436 | void* userData, unsigned depth) FAST_FUNC;
|
---|
437 | extern int device_open(const char *device, int mode) FAST_FUNC;
|
---|
438 | enum { GETPTY_BUFSIZE = 16 }; /* more than enough for "/dev/ttyXXX" */
|
---|
439 | extern int xgetpty(char *line) FAST_FUNC;
|
---|
440 | extern int get_console_fd_or_die(void) FAST_FUNC;
|
---|
441 | extern void console_make_active(int fd, const int vt_num) FAST_FUNC;
|
---|
442 | extern char *find_block_device(const char *path) FAST_FUNC;
|
---|
443 | /* bb_copyfd_XX print read/write errors and return -1 if they occur */
|
---|
444 | extern off_t bb_copyfd_eof(int fd1, int fd2) FAST_FUNC;
|
---|
445 | extern off_t bb_copyfd_size(int fd1, int fd2, off_t size) FAST_FUNC;
|
---|
446 | extern void bb_copyfd_exact_size(int fd1, int fd2, off_t size) FAST_FUNC;
|
---|
447 | /* "short" copy can be detected by return value < size */
|
---|
448 | /* this helper yells "short read!" if param is not -1 */
|
---|
449 | extern void complain_copyfd_and_die(off_t sz) NORETURN FAST_FUNC;
|
---|
450 |
|
---|
451 | extern char bb_process_escape_sequence(const char **ptr) FAST_FUNC;
|
---|
452 | char* strcpy_and_process_escape_sequences(char *dst, const char *src) FAST_FUNC;
|
---|
453 | /* xxxx_strip version can modify its parameter:
|
---|
454 | * "/" -> "/"
|
---|
455 | * "abc" -> "abc"
|
---|
456 | * "abc/def" -> "def"
|
---|
457 | * "abc/def/" -> "def" !!
|
---|
458 | */
|
---|
459 | char *bb_get_last_path_component_strip(char *path) FAST_FUNC;
|
---|
460 | /* "abc/def/" -> "" and it never modifies 'path' */
|
---|
461 | char *bb_get_last_path_component_nostrip(const char *path) FAST_FUNC;
|
---|
462 | /* Simpler version: does not special case "/" string */
|
---|
463 | const char *bb_basename(const char *name) FAST_FUNC;
|
---|
464 | /* NB: can violate const-ness (similarly to strchr) */
|
---|
465 | char *last_char_is(const char *s, int c) FAST_FUNC;
|
---|
466 | const char* endofname(const char *name) FAST_FUNC;
|
---|
467 | char *is_prefixed_with(const char *string, const char *key) FAST_FUNC;
|
---|
468 | char *is_suffixed_with(const char *string, const char *key) FAST_FUNC;
|
---|
469 |
|
---|
470 | int ndelay_on(int fd) FAST_FUNC;
|
---|
471 | int ndelay_off(int fd) FAST_FUNC;
|
---|
472 | void close_on_exec_on(int fd) FAST_FUNC;
|
---|
473 | void xdup2(int, int) FAST_FUNC;
|
---|
474 | void xmove_fd(int, int) FAST_FUNC;
|
---|
475 |
|
---|
476 |
|
---|
477 | DIR *xopendir(const char *path) FAST_FUNC;
|
---|
478 | DIR *warn_opendir(const char *path) FAST_FUNC;
|
---|
479 |
|
---|
480 | char *xmalloc_realpath(const char *path) FAST_FUNC RETURNS_MALLOC;
|
---|
481 | char *xmalloc_readlink(const char *path) FAST_FUNC RETURNS_MALLOC;
|
---|
482 | char *xmalloc_readlink_or_warn(const char *path) FAST_FUNC RETURNS_MALLOC;
|
---|
483 | /* !RETURNS_MALLOC: it's a realloc-like function */
|
---|
484 | char *xrealloc_getcwd_or_warn(char *cwd) FAST_FUNC;
|
---|
485 |
|
---|
486 | char *xmalloc_follow_symlinks(const char *path) FAST_FUNC RETURNS_MALLOC;
|
---|
487 |
|
---|
488 |
|
---|
489 | enum {
|
---|
490 | /* bb_signals(BB_FATAL_SIGS, handler) catches all signals which
|
---|
491 | * otherwise would kill us, except for those resulting from bugs:
|
---|
492 | * SIGSEGV, SIGILL, SIGFPE.
|
---|
493 | * Other fatal signals not included (TODO?):
|
---|
494 | * SIGBUS Bus error (bad memory access)
|
---|
495 | * SIGPOLL Pollable event. Synonym of SIGIO
|
---|
496 | * SIGPROF Profiling timer expired
|
---|
497 | * SIGSYS Bad argument to routine
|
---|
498 | * SIGTRAP Trace/breakpoint trap
|
---|
499 | *
|
---|
500 | * The only known arch with some of these sigs not fitting
|
---|
501 | * into 32 bits is parisc (SIGXCPU=33, SIGXFSZ=34, SIGSTKFLT=36).
|
---|
502 | * Dance around with long long to guard against that...
|
---|
503 | */
|
---|
504 | BB_FATAL_SIGS = (int)(0
|
---|
505 | + (1LL << SIGHUP)
|
---|
506 | + (1LL << SIGINT)
|
---|
507 | + (1LL << SIGTERM)
|
---|
508 | + (1LL << SIGPIPE) // Write to pipe with no readers
|
---|
509 | + (1LL << SIGQUIT) // Quit from keyboard
|
---|
510 | + (1LL << SIGABRT) // Abort signal from abort(3)
|
---|
511 | + (1LL << SIGALRM) // Timer signal from alarm(2)
|
---|
512 | + (1LL << SIGVTALRM) // Virtual alarm clock
|
---|
513 | + (1LL << SIGXCPU) // CPU time limit exceeded
|
---|
514 | + (1LL << SIGXFSZ) // File size limit exceeded
|
---|
515 | + (1LL << SIGUSR1) // Yes kids, these are also fatal!
|
---|
516 | + (1LL << SIGUSR2)
|
---|
517 | + 0),
|
---|
518 | };
|
---|
519 | void bb_signals(int sigs, void (*f)(int)) FAST_FUNC;
|
---|
520 | /* Unlike signal() and bb_signals, sets handler with sigaction()
|
---|
521 | * and in a way that while signal handler is run, no other signals
|
---|
522 | * will be blocked; syscalls will not be restarted: */
|
---|
523 | void bb_signals_recursive_norestart(int sigs, void (*f)(int)) FAST_FUNC;
|
---|
524 | /* syscalls like read() will be interrupted with EINTR: */
|
---|
525 | void signal_no_SA_RESTART_empty_mask(int sig, void (*handler)(int)) FAST_FUNC;
|
---|
526 | /* syscalls like read() won't be interrupted (though select/poll will be): */
|
---|
527 | void signal_SA_RESTART_empty_mask(int sig, void (*handler)(int)) FAST_FUNC;
|
---|
528 | void wait_for_any_sig(void) FAST_FUNC;
|
---|
529 | void kill_myself_with_sig(int sig) NORETURN FAST_FUNC;
|
---|
530 | void sig_block(int sig) FAST_FUNC;
|
---|
531 | void sig_unblock(int sig) FAST_FUNC;
|
---|
532 | /* Will do sigaction(signum, act, NULL): */
|
---|
533 | int sigaction_set(int sig, const struct sigaction *act) FAST_FUNC;
|
---|
534 | /* SIG_BLOCK/SIG_UNBLOCK all signals: */
|
---|
535 | int sigprocmask_allsigs(int how) FAST_FUNC;
|
---|
536 | /* Standard handler which just records signo */
|
---|
537 | extern smallint bb_got_signal;
|
---|
538 | void record_signo(int signo); /* not FAST_FUNC! */
|
---|
539 |
|
---|
540 |
|
---|
541 | void xsetgid(gid_t gid) FAST_FUNC;
|
---|
542 | void xsetuid(uid_t uid) FAST_FUNC;
|
---|
543 | void xsetegid(gid_t egid) FAST_FUNC;
|
---|
544 | void xseteuid(uid_t euid) FAST_FUNC;
|
---|
545 | void xchdir(const char *path) FAST_FUNC;
|
---|
546 | void xfchdir(int fd) FAST_FUNC;
|
---|
547 | void xchroot(const char *path) FAST_FUNC;
|
---|
548 | void xsetenv(const char *key, const char *value) FAST_FUNC;
|
---|
549 | void bb_unsetenv(const char *key) FAST_FUNC;
|
---|
550 | void bb_unsetenv_and_free(char *key) FAST_FUNC;
|
---|
551 | void xunlink(const char *pathname) FAST_FUNC;
|
---|
552 | void xstat(const char *pathname, struct stat *buf) FAST_FUNC;
|
---|
553 | void xfstat(int fd, struct stat *buf, const char *errmsg) FAST_FUNC;
|
---|
554 | int open3_or_warn(const char *pathname, int flags, int mode) FAST_FUNC;
|
---|
555 | int open_or_warn(const char *pathname, int flags) FAST_FUNC;
|
---|
556 | int xopen3(const char *pathname, int flags, int mode) FAST_FUNC;
|
---|
557 | int xopen(const char *pathname, int flags) FAST_FUNC;
|
---|
558 | int xopen_nonblocking(const char *pathname) FAST_FUNC;
|
---|
559 | int xopen_as_uid_gid(const char *pathname, int flags, uid_t u, gid_t g) FAST_FUNC;
|
---|
560 | int open_or_warn_stdin(const char *pathname) FAST_FUNC;
|
---|
561 | int xopen_stdin(const char *pathname) FAST_FUNC;
|
---|
562 | void xrename(const char *oldpath, const char *newpath) FAST_FUNC;
|
---|
563 | int rename_or_warn(const char *oldpath, const char *newpath) FAST_FUNC;
|
---|
564 | off_t xlseek(int fd, off_t offset, int whence) FAST_FUNC;
|
---|
565 | int xmkstemp(char *template) FAST_FUNC;
|
---|
566 | off_t fdlength(int fd) FAST_FUNC;
|
---|
567 |
|
---|
568 | uoff_t FAST_FUNC get_volume_size_in_bytes(int fd,
|
---|
569 | const char *override,
|
---|
570 | unsigned override_units,
|
---|
571 | int extend);
|
---|
572 |
|
---|
573 | void xpipe(int filedes[2]) FAST_FUNC;
|
---|
574 | /* In this form code with pipes is much more readable */
|
---|
575 | struct fd_pair { int rd; int wr; };
|
---|
576 | #define piped_pair(pair) pipe(&((pair).rd))
|
---|
577 | #define xpiped_pair(pair) xpipe(&((pair).rd))
|
---|
578 |
|
---|
579 | /* Useful for having small structure members/global variables */
|
---|
580 | typedef int8_t socktype_t;
|
---|
581 | typedef int8_t family_t;
|
---|
582 | struct BUG_too_small {
|
---|
583 | char BUG_socktype_t_too_small[(0
|
---|
584 | | SOCK_STREAM
|
---|
585 | | SOCK_DGRAM
|
---|
586 | | SOCK_RDM
|
---|
587 | | SOCK_SEQPACKET
|
---|
588 | | SOCK_RAW
|
---|
589 | ) <= 127 ? 1 : -1];
|
---|
590 | char BUG_family_t_too_small[(0
|
---|
591 | | AF_UNSPEC
|
---|
592 | | AF_INET
|
---|
593 | | AF_INET6
|
---|
594 | | AF_UNIX
|
---|
595 | #ifdef AF_PACKET
|
---|
596 | | AF_PACKET
|
---|
597 | #endif
|
---|
598 | #ifdef AF_NETLINK
|
---|
599 | | AF_NETLINK
|
---|
600 | #endif
|
---|
601 | /* | AF_DECnet */
|
---|
602 | /* | AF_IPX */
|
---|
603 | ) <= 127 ? 1 : -1];
|
---|
604 | };
|
---|
605 |
|
---|
606 |
|
---|
607 | void parse_datestr(const char *date_str, struct tm *ptm) FAST_FUNC;
|
---|
608 | time_t validate_tm_time(const char *date_str, struct tm *ptm) FAST_FUNC;
|
---|
609 | char *strftime_HHMMSS(char *buf, unsigned len, time_t *tp) FAST_FUNC;
|
---|
610 | char *strftime_YYYYMMDDHHMMSS(char *buf, unsigned len, time_t *tp) FAST_FUNC;
|
---|
611 |
|
---|
612 | int xsocket(int domain, int type, int protocol) FAST_FUNC;
|
---|
613 | void xbind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen) FAST_FUNC;
|
---|
614 | void xlisten(int s, int backlog) FAST_FUNC;
|
---|
615 | void xconnect(int s, const struct sockaddr *s_addr, socklen_t addrlen) FAST_FUNC;
|
---|
616 | ssize_t xsendto(int s, const void *buf, size_t len, const struct sockaddr *to,
|
---|
617 | socklen_t tolen) FAST_FUNC;
|
---|
618 |
|
---|
619 | int setsockopt_int(int fd, int level, int optname, int optval) FAST_FUNC;
|
---|
620 | int setsockopt_1(int fd, int level, int optname) FAST_FUNC;
|
---|
621 | int setsockopt_SOL_SOCKET_int(int fd, int optname, int optval) FAST_FUNC;
|
---|
622 | int setsockopt_SOL_SOCKET_1(int fd, int optname) FAST_FUNC;
|
---|
623 | /* SO_REUSEADDR allows a server to rebind to an address that is already
|
---|
624 | * "in use" by old connections to e.g. previous server instance which is
|
---|
625 | * killed or crashed. Without it bind will fail until all such connections
|
---|
626 | * time out. Linux does not allow multiple live binds on same ip:port
|
---|
627 | * regardless of SO_REUSEADDR (unlike some other flavors of Unix).
|
---|
628 | * Turn it on before you call bind(). */
|
---|
629 | void setsockopt_reuseaddr(int fd) FAST_FUNC; /* On Linux this never fails. */
|
---|
630 | int setsockopt_keepalive(int fd) FAST_FUNC;
|
---|
631 | int setsockopt_broadcast(int fd) FAST_FUNC;
|
---|
632 | int setsockopt_bindtodevice(int fd, const char *iface) FAST_FUNC;
|
---|
633 | /* NB: returns port in host byte order */
|
---|
634 | unsigned bb_lookup_port(const char *port, const char *protocol, unsigned default_port) FAST_FUNC;
|
---|
635 | typedef struct len_and_sockaddr {
|
---|
636 | socklen_t len;
|
---|
637 | union {
|
---|
638 | struct sockaddr sa;
|
---|
639 | struct sockaddr_in sin;
|
---|
640 | #if ENABLE_FEATURE_IPV6
|
---|
641 | struct sockaddr_in6 sin6;
|
---|
642 | #endif
|
---|
643 | } u;
|
---|
644 | } len_and_sockaddr;
|
---|
645 | enum {
|
---|
646 | LSA_LEN_SIZE = offsetof(len_and_sockaddr, u),
|
---|
647 | LSA_SIZEOF_SA = sizeof(
|
---|
648 | union {
|
---|
649 | struct sockaddr sa;
|
---|
650 | struct sockaddr_in sin;
|
---|
651 | #if ENABLE_FEATURE_IPV6
|
---|
652 | struct sockaddr_in6 sin6;
|
---|
653 | #endif
|
---|
654 | }
|
---|
655 | )
|
---|
656 | };
|
---|
657 | /* Create stream socket, and allocate suitable lsa.
|
---|
658 | * (lsa of correct size and lsa->sa.sa_family (AF_INET/AF_INET6))
|
---|
659 | * af == AF_UNSPEC will result in trying to create IPv6 socket,
|
---|
660 | * and if kernel doesn't support it, fall back to IPv4.
|
---|
661 | * This is useful if you plan to bind to resulting local lsa.
|
---|
662 | */
|
---|
663 | int xsocket_type(len_and_sockaddr **lsap, int af, int sock_type) FAST_FUNC;
|
---|
664 | int xsocket_stream(len_and_sockaddr **lsap) FAST_FUNC;
|
---|
665 | /* Create server socket bound to bindaddr:port. bindaddr can be NULL,
|
---|
666 | * numeric IP ("N.N.N.N") or numeric IPv6 address,
|
---|
667 | * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT").
|
---|
668 | * Only if there is no suffix, port argument is used */
|
---|
669 | /* NB: these set SO_REUSEADDR before bind */
|
---|
670 | int create_and_bind_stream_or_die(const char *bindaddr, int port) FAST_FUNC;
|
---|
671 | int create_and_bind_dgram_or_die(const char *bindaddr, int port) FAST_FUNC;
|
---|
672 | /* Create client TCP socket connected to peer:port. Peer cannot be NULL.
|
---|
673 | * Peer can be numeric IP ("N.N.N.N"), numeric IPv6 address or hostname,
|
---|
674 | * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT").
|
---|
675 | * If there is no suffix, port argument is used */
|
---|
676 | int create_and_connect_stream_or_die(const char *peer, int port) FAST_FUNC;
|
---|
677 | /* Connect to peer identified by lsa */
|
---|
678 | int xconnect_stream(const len_and_sockaddr *lsa) FAST_FUNC;
|
---|
679 | /* Get local address of bound or accepted socket */
|
---|
680 | len_and_sockaddr *get_sock_lsa(int fd) FAST_FUNC RETURNS_MALLOC;
|
---|
681 | /* Get remote address of connected or accepted socket */
|
---|
682 | len_and_sockaddr *get_peer_lsa(int fd) FAST_FUNC RETURNS_MALLOC;
|
---|
683 | /* Return malloc'ed len_and_sockaddr with socket address of host:port
|
---|
684 | * Currently will return IPv4 or IPv6 sockaddrs only
|
---|
685 | * (depending on host), but in theory nothing prevents e.g.
|
---|
686 | * UNIX socket address being returned, IPX sockaddr etc...
|
---|
687 | * On error does bb_error_msg and returns NULL */
|
---|
688 | len_and_sockaddr* host2sockaddr(const char *host, int port) FAST_FUNC RETURNS_MALLOC;
|
---|
689 | /* Version which dies on error */
|
---|
690 | len_and_sockaddr* xhost2sockaddr(const char *host, int port) FAST_FUNC RETURNS_MALLOC;
|
---|
691 | len_and_sockaddr* xdotted2sockaddr(const char *host, int port) FAST_FUNC RETURNS_MALLOC;
|
---|
692 | /* Same, useful if you want to force family (e.g. IPv6) */
|
---|
693 | #if !ENABLE_FEATURE_IPV6
|
---|
694 | #define host_and_af2sockaddr(host, port, af) host2sockaddr((host), (port))
|
---|
695 | #define xhost_and_af2sockaddr(host, port, af) xhost2sockaddr((host), (port))
|
---|
696 | #else
|
---|
697 | len_and_sockaddr* host_and_af2sockaddr(const char *host, int port, sa_family_t af) FAST_FUNC RETURNS_MALLOC;
|
---|
698 | len_and_sockaddr* xhost_and_af2sockaddr(const char *host, int port, sa_family_t af) FAST_FUNC RETURNS_MALLOC;
|
---|
699 | #endif
|
---|
700 | /* Assign sin[6]_port member if the socket is an AF_INET[6] one,
|
---|
701 | * otherwise no-op. Useful for ftp.
|
---|
702 | * NB: does NOT do htons() internally, just direct assignment. */
|
---|
703 | void set_nport(struct sockaddr *sa, unsigned port) FAST_FUNC;
|
---|
704 | /* Retrieve sin[6]_port or return -1 for non-INET[6] lsa's */
|
---|
705 | int get_nport(const struct sockaddr *sa) FAST_FUNC;
|
---|
706 | /* Reverse DNS. Returns NULL on failure. */
|
---|
707 | char* xmalloc_sockaddr2host(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC;
|
---|
708 | /* This one doesn't append :PORTNUM */
|
---|
709 | char* xmalloc_sockaddr2host_noport(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC;
|
---|
710 | /* This one also doesn't fall back to dotted IP (returns NULL) */
|
---|
711 | char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC;
|
---|
712 | /* inet_[ap]ton on steroids */
|
---|
713 | char* xmalloc_sockaddr2dotted(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC;
|
---|
714 | char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa) FAST_FUNC RETURNS_MALLOC;
|
---|
715 | // "old" (ipv4 only) API
|
---|
716 | // users: traceroute.c hostname.c - use _list_ of all IPs
|
---|
717 | struct hostent *xgethostbyname(const char *name) FAST_FUNC;
|
---|
718 | // Also mount.c and inetd.c are using gethostbyname(),
|
---|
719 | // + inet_common.c has additional IPv4-only stuff
|
---|
720 |
|
---|
721 |
|
---|
722 | void socket_want_pktinfo(int fd) FAST_FUNC;
|
---|
723 | ssize_t send_to_from(int fd, void *buf, size_t len, int flags,
|
---|
724 | const struct sockaddr *to,
|
---|
725 | const struct sockaddr *from,
|
---|
726 | socklen_t tolen) FAST_FUNC;
|
---|
727 | ssize_t recv_from_to(int fd, void *buf, size_t len, int flags,
|
---|
728 | struct sockaddr *from,
|
---|
729 | struct sockaddr *to,
|
---|
730 | socklen_t sa_size) FAST_FUNC;
|
---|
731 |
|
---|
732 | uint16_t inet_cksum(uint16_t *addr, int len) FAST_FUNC;
|
---|
733 |
|
---|
734 | char *xstrdup(const char *s) FAST_FUNC RETURNS_MALLOC;
|
---|
735 | char *xstrndup(const char *s, int n) FAST_FUNC RETURNS_MALLOC;
|
---|
736 | void *xmemdup(const void *s, int n) FAST_FUNC RETURNS_MALLOC;
|
---|
737 | void overlapping_strcpy(char *dst, const char *src) FAST_FUNC;
|
---|
738 | char *safe_strncpy(char *dst, const char *src, size_t size) FAST_FUNC;
|
---|
739 | char *strncpy_IFNAMSIZ(char *dst, const char *src) FAST_FUNC;
|
---|
740 | unsigned count_strstr(const char *str, const char *sub) FAST_FUNC;
|
---|
741 | char *xmalloc_substitute_string(const char *src, int count, const char *sub, const char *repl) FAST_FUNC;
|
---|
742 | /* Guaranteed to NOT be a macro (smallest code). Saves nearly 2k on uclibc.
|
---|
743 | * But potentially slow, don't use in one-billion-times loops */
|
---|
744 | int bb_putchar(int ch) FAST_FUNC;
|
---|
745 | /* Note: does not use stdio, writes to fd 2 directly */
|
---|
746 | int bb_putchar_stderr(char ch) FAST_FUNC;
|
---|
747 | char *xasprintf(const char *format, ...) __attribute__ ((format(printf, 1, 2))) FAST_FUNC RETURNS_MALLOC;
|
---|
748 | char *auto_string(char *str) FAST_FUNC;
|
---|
749 | // gcc-4.1.1 still isn't good enough at optimizing it
|
---|
750 | // (+200 bytes compared to macro)
|
---|
751 | //static ALWAYS_INLINE
|
---|
752 | //int LONE_DASH(const char *s) { return s[0] == '-' && !s[1]; }
|
---|
753 | //static ALWAYS_INLINE
|
---|
754 | //int NOT_LONE_DASH(const char *s) { return s[0] != '-' || s[1]; }
|
---|
755 | #define LONE_DASH(s) ((s)[0] == '-' && !(s)[1])
|
---|
756 | #define NOT_LONE_DASH(s) ((s)[0] != '-' || (s)[1])
|
---|
757 | #define LONE_CHAR(s,c) ((s)[0] == (c) && !(s)[1])
|
---|
758 | #define NOT_LONE_CHAR(s,c) ((s)[0] != (c) || (s)[1])
|
---|
759 | #define DOT_OR_DOTDOT(s) ((s)[0] == '.' && (!(s)[1] || ((s)[1] == '.' && !(s)[2])))
|
---|
760 |
|
---|
761 | typedef struct uni_stat_t {
|
---|
762 | unsigned byte_count;
|
---|
763 | unsigned unicode_count;
|
---|
764 | unsigned unicode_width;
|
---|
765 | } uni_stat_t;
|
---|
766 | /* Returns a string with unprintable chars replaced by '?' or
|
---|
767 | * SUBST_WCHAR. This function is unicode-aware. */
|
---|
768 | const char* FAST_FUNC printable_string(uni_stat_t *stats, const char *str);
|
---|
769 | /* Prints unprintable char ch as ^C or M-c to file
|
---|
770 | * (M-c is used only if ch is ORed with PRINTABLE_META),
|
---|
771 | * else it is printed as-is (except for ch = 0x9b) */
|
---|
772 | enum { PRINTABLE_META = 0x100 };
|
---|
773 | void fputc_printable(int ch, FILE *file) FAST_FUNC;
|
---|
774 | /* Return a string that is the printable representation of character ch.
|
---|
775 | * Buffer must hold at least four characters. */
|
---|
776 | enum {
|
---|
777 | VISIBLE_ENDLINE = 1 << 0,
|
---|
778 | VISIBLE_SHOW_TABS = 1 << 1,
|
---|
779 | };
|
---|
780 | void visible(unsigned ch, char *buf, int flags) FAST_FUNC;
|
---|
781 |
|
---|
782 | /* dmalloc will redefine these to it's own implementation. It is safe
|
---|
783 | * to have the prototypes here unconditionally. */
|
---|
784 | void *malloc_or_warn(size_t size) FAST_FUNC RETURNS_MALLOC;
|
---|
785 | void *xmalloc(size_t size) FAST_FUNC RETURNS_MALLOC;
|
---|
786 | void *xzalloc(size_t size) FAST_FUNC RETURNS_MALLOC;
|
---|
787 | void *xrealloc(void *old, size_t size) FAST_FUNC;
|
---|
788 | /* After v = xrealloc_vector(v, SHIFT, idx) it's ok to use
|
---|
789 | * at least v[idx] and v[idx+1], for all idx values.
|
---|
790 | * SHIFT specifies how many new elements are added (1:2, 2:4, ..., 8:256...)
|
---|
791 | * when all elements are used up. New elements are zeroed out.
|
---|
792 | * xrealloc_vector(v, SHIFT, idx) *MUST* be called with consecutive IDXs -
|
---|
793 | * skipping an index is a bad bug - it may miss a realloc!
|
---|
794 | */
|
---|
795 | #define xrealloc_vector(vector, shift, idx) \
|
---|
796 | xrealloc_vector_helper((vector), (sizeof((vector)[0]) << 8) + (shift), (idx))
|
---|
797 | void* xrealloc_vector_helper(void *vector, unsigned sizeof_and_shift, int idx) FAST_FUNC;
|
---|
798 |
|
---|
799 |
|
---|
800 | extern ssize_t safe_read(int fd, void *buf, size_t count) FAST_FUNC;
|
---|
801 | extern ssize_t nonblock_immune_read(int fd, void *buf, size_t count) FAST_FUNC;
|
---|
802 | // NB: will return short read on error, not -1,
|
---|
803 | // if some data was read before error occurred
|
---|
804 | extern ssize_t full_read(int fd, void *buf, size_t count) FAST_FUNC;
|
---|
805 | extern void xread(int fd, void *buf, size_t count) FAST_FUNC;
|
---|
806 | extern unsigned char xread_char(int fd) FAST_FUNC;
|
---|
807 | extern ssize_t read_close(int fd, void *buf, size_t maxsz) FAST_FUNC;
|
---|
808 | extern ssize_t open_read_close(const char *filename, void *buf, size_t maxsz) FAST_FUNC;
|
---|
809 | // Reads one line a-la fgets (but doesn't save terminating '\n').
|
---|
810 | // Reads byte-by-byte. Useful when it is important to not read ahead.
|
---|
811 | // Bytes are appended to pfx (which must be malloced, or NULL).
|
---|
812 | extern char *xmalloc_reads(int fd, size_t *maxsz_p) FAST_FUNC;
|
---|
813 | /* Reads block up to *maxsz_p (default: INT_MAX - 4095) */
|
---|
814 | extern void *xmalloc_read(int fd, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC;
|
---|
815 | /* Returns NULL if file can't be opened (default max size: INT_MAX - 4095) */
|
---|
816 | extern void *xmalloc_open_read_close(const char *filename, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC;
|
---|
817 | /* Never returns NULL */
|
---|
818 | extern void *xmalloc_xopen_read_close(const char *filename, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC;
|
---|
819 |
|
---|
820 | #if defined(ARG_MAX) && (ARG_MAX >= 60*1024 || !defined(_SC_ARG_MAX))
|
---|
821 | /* Use _constant_ maximum if: defined && (big enough || no variable one exists) */
|
---|
822 | # define bb_arg_max() ((unsigned)ARG_MAX)
|
---|
823 | #elif defined(_SC_ARG_MAX)
|
---|
824 | /* Else use variable one (a bit more expensive) */
|
---|
825 | unsigned bb_arg_max(void) FAST_FUNC;
|
---|
826 | #else
|
---|
827 | /* If all else fails */
|
---|
828 | # define bb_arg_max() ((unsigned)(32 * 1024))
|
---|
829 | #endif
|
---|
830 | unsigned bb_clk_tck(void) FAST_FUNC;
|
---|
831 |
|
---|
832 | #define SEAMLESS_COMPRESSION (0 \
|
---|
833 | || ENABLE_FEATURE_SEAMLESS_XZ \
|
---|
834 | || ENABLE_FEATURE_SEAMLESS_LZMA \
|
---|
835 | || ENABLE_FEATURE_SEAMLESS_BZ2 \
|
---|
836 | || ENABLE_FEATURE_SEAMLESS_GZ \
|
---|
837 | || ENABLE_FEATURE_SEAMLESS_Z)
|
---|
838 |
|
---|
839 | #if SEAMLESS_COMPRESSION
|
---|
840 | /* Autodetects gzip/bzip2 formats. fd may be in the middle of the file! */
|
---|
841 | extern int setup_unzip_on_fd(int fd, int fail_if_not_compressed) FAST_FUNC;
|
---|
842 | /* Autodetects .gz etc */
|
---|
843 | extern int open_zipped(const char *fname, int fail_if_not_compressed) FAST_FUNC;
|
---|
844 | extern void *xmalloc_open_zipped_read_close(const char *fname, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC;
|
---|
845 | #else
|
---|
846 | # define setup_unzip_on_fd(...) (0)
|
---|
847 | # define open_zipped(fname, fail_if_not_compressed) open((fname), O_RDONLY);
|
---|
848 | # define xmalloc_open_zipped_read_close(fname, maxsz_p) xmalloc_open_read_close((fname), (maxsz_p))
|
---|
849 | #endif
|
---|
850 |
|
---|
851 | extern ssize_t safe_write(int fd, const void *buf, size_t count) FAST_FUNC;
|
---|
852 | // NB: will return short write on error, not -1,
|
---|
853 | // if some data was written before error occurred
|
---|
854 | extern ssize_t full_write(int fd, const void *buf, size_t count) FAST_FUNC;
|
---|
855 | extern void xwrite(int fd, const void *buf, size_t count) FAST_FUNC;
|
---|
856 | extern void xwrite_str(int fd, const char *str) FAST_FUNC;
|
---|
857 | extern ssize_t full_write1_str(const char *str) FAST_FUNC;
|
---|
858 | extern ssize_t full_write2_str(const char *str) FAST_FUNC;
|
---|
859 | extern void xopen_xwrite_close(const char* file, const char *str) FAST_FUNC;
|
---|
860 |
|
---|
861 | /* Close fd, but check for failures (some types of write errors) */
|
---|
862 | extern void xclose(int fd) FAST_FUNC;
|
---|
863 |
|
---|
864 | /* Reads and prints to stdout till eof, then closes FILE. Exits on error: */
|
---|
865 | extern void xprint_and_close_file(FILE *file) FAST_FUNC;
|
---|
866 |
|
---|
867 | /* Reads a line from a text file, up to a newline or NUL byte, inclusive.
|
---|
868 | * Returns malloc'ed char*. If end is NULL '\n' isn't considered
|
---|
869 | * end of line. If end isn't NULL, length of the chunk is stored in it.
|
---|
870 | * Returns NULL if EOF/error.
|
---|
871 | */
|
---|
872 | extern char *bb_get_chunk_from_file(FILE *file, int *end) FAST_FUNC;
|
---|
873 | /* Reads up to (and including) TERMINATING_STRING: */
|
---|
874 | extern char *xmalloc_fgets_str(FILE *file, const char *terminating_string) FAST_FUNC RETURNS_MALLOC;
|
---|
875 | /* Same, with limited max size, and returns the length (excluding NUL): */
|
---|
876 | extern char *xmalloc_fgets_str_len(FILE *file, const char *terminating_string, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC;
|
---|
877 | /* Chops off TERMINATING_STRING from the end: */
|
---|
878 | extern char *xmalloc_fgetline_str(FILE *file, const char *terminating_string) FAST_FUNC RETURNS_MALLOC;
|
---|
879 | /* Reads up to (and including) "\n" or NUL byte: */
|
---|
880 | extern char *xmalloc_fgets(FILE *file) FAST_FUNC RETURNS_MALLOC;
|
---|
881 | /* Chops off '\n' from the end, unlike fgets: */
|
---|
882 | extern char *xmalloc_fgetline(FILE *file) FAST_FUNC RETURNS_MALLOC;
|
---|
883 | /* Same, but doesn't try to conserve space (may have some slack after the end) */
|
---|
884 | /* extern char *xmalloc_fgetline_fast(FILE *file) FAST_FUNC RETURNS_MALLOC; */
|
---|
885 |
|
---|
886 | void die_if_ferror(FILE *file, const char *msg) FAST_FUNC;
|
---|
887 | void die_if_ferror_stdout(void) FAST_FUNC;
|
---|
888 | int fflush_all(void) FAST_FUNC;
|
---|
889 | void fflush_stdout_and_exit(int retval) NORETURN FAST_FUNC;
|
---|
890 | int fclose_if_not_stdin(FILE *file) FAST_FUNC;
|
---|
891 | FILE* xfopen(const char *filename, const char *mode) FAST_FUNC;
|
---|
892 | /* Prints warning to stderr and returns NULL on failure: */
|
---|
893 | FILE* fopen_or_warn(const char *filename, const char *mode) FAST_FUNC;
|
---|
894 | /* "Opens" stdin if filename is special, else just opens file: */
|
---|
895 | FILE* xfopen_stdin(const char *filename) FAST_FUNC;
|
---|
896 | FILE* fopen_or_warn_stdin(const char *filename) FAST_FUNC;
|
---|
897 | FILE* fopen_for_read(const char *path) FAST_FUNC;
|
---|
898 | FILE* xfopen_for_read(const char *path) FAST_FUNC;
|
---|
899 | FILE* fopen_for_write(const char *path) FAST_FUNC;
|
---|
900 | FILE* xfopen_for_write(const char *path) FAST_FUNC;
|
---|
901 | FILE* xfdopen_for_read(int fd) FAST_FUNC;
|
---|
902 | FILE* xfdopen_for_write(int fd) FAST_FUNC;
|
---|
903 |
|
---|
904 | int bb_pstrcmp(const void *a, const void *b) /* not FAST_FUNC! */;
|
---|
905 | void qsort_string_vector(char **sv, unsigned count) FAST_FUNC;
|
---|
906 |
|
---|
907 | /* Wrapper which restarts poll on EINTR or ENOMEM.
|
---|
908 | * On other errors complains [perror("poll")] and returns.
|
---|
909 | * Warning! May take (much) longer than timeout_ms to return!
|
---|
910 | * If this is a problem, use bare poll and open-code EINTR/ENOMEM handling */
|
---|
911 | int safe_poll(struct pollfd *ufds, nfds_t nfds, int timeout_ms) FAST_FUNC;
|
---|
912 |
|
---|
913 | char *safe_gethostname(void) FAST_FUNC;
|
---|
914 |
|
---|
915 | /* Convert each alpha char in str to lower-case */
|
---|
916 | char* str_tolower(char *str) FAST_FUNC;
|
---|
917 |
|
---|
918 | char *bb_utoa(unsigned n) FAST_FUNC;
|
---|
919 | char *bb_itoa(int n) FAST_FUNC;
|
---|
920 | /* Returns a pointer past the formatted number, does NOT null-terminate */
|
---|
921 | char *utoa_to_buf(unsigned n, char *buf, unsigned buflen) FAST_FUNC;
|
---|
922 | char *itoa_to_buf(int n, char *buf, unsigned buflen) FAST_FUNC;
|
---|
923 | /* Intelligent formatters of bignums */
|
---|
924 | char *smart_ulltoa4(unsigned long long ul, char buf[4], const char *scale) FAST_FUNC;
|
---|
925 | char *smart_ulltoa5(unsigned long long ul, char buf[5], const char *scale) FAST_FUNC;
|
---|
926 | /* If block_size == 0, display size without fractional part,
|
---|
927 | * else display (size * block_size) with one decimal digit.
|
---|
928 | * If display_unit == 0, show value no bigger than 1024 with suffix (K,M,G...),
|
---|
929 | * else divide by display_unit and do not use suffix. */
|
---|
930 | #define HUMAN_READABLE_MAX_WIDTH 7 /* "1024.0G" */
|
---|
931 | #define HUMAN_READABLE_MAX_WIDTH_STR "7"
|
---|
932 | //TODO: provide pointer to buf (avoid statics)?
|
---|
933 | const char *make_human_readable_str(unsigned long long size,
|
---|
934 | unsigned long block_size, unsigned long display_unit) FAST_FUNC;
|
---|
935 | /* Put a string of hex bytes ("1b2e66fe"...), return advanced pointer */
|
---|
936 | char *bin2hex(char *dst, const char *src, int count) FAST_FUNC;
|
---|
937 | /* Reverse */
|
---|
938 | char* hex2bin(char *dst, const char *src, int count) FAST_FUNC;
|
---|
939 |
|
---|
940 | /* Generate a UUID */
|
---|
941 | void generate_uuid(uint8_t *buf) FAST_FUNC;
|
---|
942 |
|
---|
943 | /* Last element is marked by mult == 0 */
|
---|
944 | struct suffix_mult {
|
---|
945 | char suffix[4];
|
---|
946 | unsigned mult;
|
---|
947 | };
|
---|
948 | extern const struct suffix_mult bkm_suffixes[];
|
---|
949 | #define km_suffixes (bkm_suffixes + 1)
|
---|
950 | extern const struct suffix_mult cwbkMG_suffixes[];
|
---|
951 | #define kMG_suffixes (cwbkMG_suffixes + 3)
|
---|
952 | extern const struct suffix_mult kmg_i_suffixes[];
|
---|
953 |
|
---|
954 | /*#include "xatonum.h"*/
|
---|
955 | long FAST_FUNC bb_strtol(const char *arg, char **endp, int base);
|
---|
956 | /* Specialized: */
|
---|
957 |
|
---|
958 | /* Using xatoi() instead of naive atoi() is not always convenient -
|
---|
959 | * in many places people want *non-negative* values, but store them
|
---|
960 | * in signed int. Therefore we need this one:
|
---|
961 | * dies if input is not in [0, INT_MAX] range. Also will reject '-0' etc.
|
---|
962 | * It should really be named xatoi_nonnegative (since it allows 0),
|
---|
963 | * but that would be too long.
|
---|
964 | */
|
---|
965 | int xatoi_positive(const char *numstr) FAST_FUNC;
|
---|
966 |
|
---|
967 | /* Useful for reading port numbers */
|
---|
968 | uint16_t xatou16(const char *numstr) FAST_FUNC;
|
---|
969 |
|
---|
970 |
|
---|
971 | /* These parse entries in /etc/passwd and /etc/group. This is desirable
|
---|
972 | * for BusyBox since we want to avoid using the glibc NSS stuff, which
|
---|
973 | * increases target size and is often not needed on embedded systems. */
|
---|
974 | long xuname2uid(const char *name) FAST_FUNC;
|
---|
975 | long xgroup2gid(const char *name) FAST_FUNC;
|
---|
976 | /* wrapper: allows string to contain numeric uid or gid */
|
---|
977 | unsigned long get_ug_id(const char *s, long FAST_FUNC (*xname2id)(const char *)) FAST_FUNC;
|
---|
978 | struct bb_uidgid_t {
|
---|
979 | uid_t uid;
|
---|
980 | gid_t gid;
|
---|
981 | };
|
---|
982 | /* always sets uid and gid; returns 0 on failure */
|
---|
983 | int get_uidgid(struct bb_uidgid_t*, const char*) FAST_FUNC;
|
---|
984 | /* always sets uid and gid; exits on failure */
|
---|
985 | void xget_uidgid(struct bb_uidgid_t*, const char*) FAST_FUNC;
|
---|
986 | /* chown-like handling of "user[:[group]" */
|
---|
987 | void parse_chown_usergroup_or_die(struct bb_uidgid_t *u, char *user_group) FAST_FUNC;
|
---|
988 | struct passwd* xgetpwnam(const char *name) FAST_FUNC;
|
---|
989 | struct group* xgetgrnam(const char *name) FAST_FUNC;
|
---|
990 | struct passwd* xgetpwuid(uid_t uid) FAST_FUNC;
|
---|
991 | struct group* xgetgrgid(gid_t gid) FAST_FUNC;
|
---|
992 | char* xuid2uname(uid_t uid) FAST_FUNC;
|
---|
993 | char* xgid2group(gid_t gid) FAST_FUNC;
|
---|
994 | char* uid2uname(uid_t uid) FAST_FUNC;
|
---|
995 | char* gid2group(gid_t gid) FAST_FUNC;
|
---|
996 | char* uid2uname_utoa(uid_t uid) FAST_FUNC;
|
---|
997 | char* gid2group_utoa(gid_t gid) FAST_FUNC;
|
---|
998 | /* versions which cache results (useful for ps, ls etc) */
|
---|
999 | const char* get_cached_username(uid_t uid) FAST_FUNC;
|
---|
1000 | const char* get_cached_groupname(gid_t gid) FAST_FUNC;
|
---|
1001 | void clear_username_cache(void) FAST_FUNC;
|
---|
1002 | /* internally usernames are saved in fixed-sized char[] buffers */
|
---|
1003 | enum { USERNAME_MAX_SIZE = 32 - sizeof(uid_t) };
|
---|
1004 | #if ENABLE_FEATURE_CHECK_NAMES
|
---|
1005 | void die_if_bad_username(const char* name) FAST_FUNC;
|
---|
1006 | #else
|
---|
1007 | #define die_if_bad_username(name) ((void)(name))
|
---|
1008 | #endif
|
---|
1009 |
|
---|
1010 | #if ENABLE_FEATURE_UTMP
|
---|
1011 | void FAST_FUNC write_new_utmp(pid_t pid, int new_type, const char *tty_name, const char *username, const char *hostname);
|
---|
1012 | void FAST_FUNC update_utmp(pid_t pid, int new_type, const char *tty_name, const char *username, const char *hostname);
|
---|
1013 | void FAST_FUNC update_utmp_DEAD_PROCESS(pid_t pid);
|
---|
1014 | #else
|
---|
1015 | # define write_new_utmp(pid, new_type, tty_name, username, hostname) ((void)0)
|
---|
1016 | # define update_utmp(pid, new_type, tty_name, username, hostname) ((void)0)
|
---|
1017 | # define update_utmp_DEAD_PROCESS(pid) ((void)0)
|
---|
1018 | #endif
|
---|
1019 |
|
---|
1020 |
|
---|
1021 | int file_is_executable(const char *name) FAST_FUNC;
|
---|
1022 | char *find_executable(const char *filename, char **PATHp) FAST_FUNC;
|
---|
1023 | int executable_exists(const char *filename) FAST_FUNC;
|
---|
1024 |
|
---|
1025 | /* BB_EXECxx always execs (it's not doing NOFORK/NOEXEC stuff),
|
---|
1026 | * but it may exec busybox and call applet instead of searching PATH.
|
---|
1027 | */
|
---|
1028 | #if ENABLE_FEATURE_PREFER_APPLETS
|
---|
1029 | int BB_EXECVP(const char *file, char *const argv[]) FAST_FUNC;
|
---|
1030 | #define BB_EXECLP(prog,cmd,...) \
|
---|
1031 | do { \
|
---|
1032 | if (find_applet_by_name(prog) >= 0) \
|
---|
1033 | execlp(bb_busybox_exec_path, cmd, __VA_ARGS__); \
|
---|
1034 | execlp(prog, cmd, __VA_ARGS__); \
|
---|
1035 | } while (0)
|
---|
1036 | #else
|
---|
1037 | #define BB_EXECVP(prog,cmd) execvp(prog,cmd)
|
---|
1038 | #define BB_EXECLP(prog,cmd,...) execlp(prog,cmd,__VA_ARGS__)
|
---|
1039 | #endif
|
---|
1040 | void BB_EXECVP_or_die(char **argv) NORETURN FAST_FUNC;
|
---|
1041 | void exec_prog_or_SHELL(char **argv) NORETURN FAST_FUNC;
|
---|
1042 |
|
---|
1043 | /* xvfork() can't be a _function_, return after vfork in child mangles stack
|
---|
1044 | * in the parent. It must be a macro. */
|
---|
1045 | #define xvfork() \
|
---|
1046 | ({ \
|
---|
1047 | pid_t bb__xvfork_pid = vfork(); \
|
---|
1048 | if (bb__xvfork_pid < 0) \
|
---|
1049 | bb_perror_msg_and_die("vfork"); \
|
---|
1050 | bb__xvfork_pid; \
|
---|
1051 | })
|
---|
1052 | #if BB_MMU
|
---|
1053 | pid_t xfork(void) FAST_FUNC;
|
---|
1054 | #endif
|
---|
1055 | void xvfork_parent_waits_and_exits(void) FAST_FUNC;
|
---|
1056 |
|
---|
1057 | /* NOMMU friendy fork+exec: */
|
---|
1058 | pid_t spawn(char **argv) FAST_FUNC;
|
---|
1059 | pid_t xspawn(char **argv) FAST_FUNC;
|
---|
1060 |
|
---|
1061 | pid_t safe_waitpid(pid_t pid, int *wstat, int options) FAST_FUNC;
|
---|
1062 | pid_t wait_any_nohang(int *wstat) FAST_FUNC;
|
---|
1063 | /* wait4pid: unlike waitpid, waits ONLY for one process.
|
---|
1064 | * Returns sig + 0x180 if child is killed by signal.
|
---|
1065 | * It's safe to pass negative 'pids' from failed [v]fork -
|
---|
1066 | * wait4pid will return -1 (and will not clobber [v]fork's errno).
|
---|
1067 | * IOW: rc = wait4pid(spawn(argv));
|
---|
1068 | * if (rc < 0) bb_perror_msg("%s", argv[0]);
|
---|
1069 | * if (rc > 0) bb_error_msg("exit code: %d", rc & 0xff);
|
---|
1070 | */
|
---|
1071 | int wait4pid(pid_t pid) FAST_FUNC;
|
---|
1072 | int wait_for_exitstatus(pid_t pid) FAST_FUNC;
|
---|
1073 | /* Same as wait4pid(spawn(argv)), but with NOFORK/NOEXEC if configured: */
|
---|
1074 | int spawn_and_wait(char **argv) FAST_FUNC;
|
---|
1075 | /* Does NOT check that applet is NOFORK, just blindly runs it */
|
---|
1076 | int run_nofork_applet(int applet_no, char **argv) FAST_FUNC;
|
---|
1077 |
|
---|
1078 | /* Helpers for daemonization.
|
---|
1079 | *
|
---|
1080 | * bb_daemonize(flags) = daemonize, does not compile on NOMMU
|
---|
1081 | *
|
---|
1082 | * bb_daemonize_or_rexec(flags, argv) = daemonizes on MMU (and ignores argv),
|
---|
1083 | * rexec's itself on NOMMU with argv passed as command line.
|
---|
1084 | * Thus bb_daemonize_or_rexec may cause your <applet>_main() to be re-executed
|
---|
1085 | * from the start. (It will detect it and not reexec again second time).
|
---|
1086 | * You have to audit carefully that you don't do something twice as a result
|
---|
1087 | * (opening files/sockets, parsing config files etc...)!
|
---|
1088 | *
|
---|
1089 | * Both of the above will redirect fd 0,1,2 to /dev/null and drop ctty
|
---|
1090 | * (will do setsid()).
|
---|
1091 | *
|
---|
1092 | * fork_or_rexec(argv) = bare-bones fork on MMU,
|
---|
1093 | * "vfork + re-exec ourself" on NOMMU. No fd redirection, no setsid().
|
---|
1094 | * On MMU ignores argv.
|
---|
1095 | *
|
---|
1096 | * Helper for network daemons in foreground mode:
|
---|
1097 | *
|
---|
1098 | * bb_sanitize_stdio() = make sure that fd 0,1,2 are opened by opening them
|
---|
1099 | * to /dev/null if they are not.
|
---|
1100 | */
|
---|
1101 | enum {
|
---|
1102 | DAEMON_CHDIR_ROOT = 1,
|
---|
1103 | DAEMON_DEVNULL_STDIO = 2,
|
---|
1104 | DAEMON_CLOSE_EXTRA_FDS = 4,
|
---|
1105 | DAEMON_ONLY_SANITIZE = 8, /* internal use */
|
---|
1106 | DAEMON_DOUBLE_FORK = 16, /* double fork to avoid controlling tty */
|
---|
1107 | };
|
---|
1108 | #if BB_MMU
|
---|
1109 | enum { re_execed = 0 };
|
---|
1110 | # define fork_or_rexec(argv) xfork()
|
---|
1111 | # define bb_daemonize_or_rexec(flags, argv) bb_daemonize_or_rexec(flags)
|
---|
1112 | # define bb_daemonize(flags) bb_daemonize_or_rexec(flags, bogus)
|
---|
1113 | #else
|
---|
1114 | extern bool re_execed;
|
---|
1115 | /* Note: re_exec() and fork_or_rexec() do argv[0][0] |= 0x80 on NOMMU!
|
---|
1116 | * _Parent_ needs to undo it if it doesn't want to have argv[0] mangled.
|
---|
1117 | */
|
---|
1118 | void re_exec(char **argv) NORETURN FAST_FUNC;
|
---|
1119 | pid_t fork_or_rexec(char **argv) FAST_FUNC;
|
---|
1120 | int BUG_fork_is_unavailable_on_nommu(void) FAST_FUNC;
|
---|
1121 | int BUG_daemon_is_unavailable_on_nommu(void) FAST_FUNC;
|
---|
1122 | void BUG_bb_daemonize_is_unavailable_on_nommu(void) FAST_FUNC;
|
---|
1123 | # define fork() BUG_fork_is_unavailable_on_nommu()
|
---|
1124 | # define xfork() BUG_fork_is_unavailable_on_nommu()
|
---|
1125 | # define daemon(a,b) BUG_daemon_is_unavailable_on_nommu()
|
---|
1126 | # define bb_daemonize(a) BUG_bb_daemonize_is_unavailable_on_nommu()
|
---|
1127 | #endif
|
---|
1128 | void bb_daemonize_or_rexec(int flags, char **argv) FAST_FUNC;
|
---|
1129 | void bb_sanitize_stdio(void) FAST_FUNC;
|
---|
1130 | /* Clear dangerous stuff, set PATH. Return 1 if was run by different user. */
|
---|
1131 | int sanitize_env_if_suid(void) FAST_FUNC;
|
---|
1132 |
|
---|
1133 |
|
---|
1134 | char* single_argv(char **argv) FAST_FUNC;
|
---|
1135 | extern const char *const bb_argv_dash[]; /* "-", NULL */
|
---|
1136 | extern const char *opt_complementary;
|
---|
1137 | #if ENABLE_LONG_OPTS || ENABLE_FEATURE_GETOPT_LONG
|
---|
1138 | #define No_argument "\0"
|
---|
1139 | #define Required_argument "\001"
|
---|
1140 | #define Optional_argument "\002"
|
---|
1141 | extern const char *applet_long_options;
|
---|
1142 | #endif
|
---|
1143 | extern uint32_t option_mask32;
|
---|
1144 | extern uint32_t getopt32(char **argv, const char *applet_opts, ...) FAST_FUNC;
|
---|
1145 |
|
---|
1146 |
|
---|
1147 | /* Having next pointer as a first member allows easy creation
|
---|
1148 | * of "llist-compatible" structs, and using llist_FOO functions
|
---|
1149 | * on them.
|
---|
1150 | */
|
---|
1151 | typedef struct llist_t {
|
---|
1152 | struct llist_t *link;
|
---|
1153 | char *data;
|
---|
1154 | } llist_t;
|
---|
1155 | void llist_add_to(llist_t **old_head, void *data) FAST_FUNC;
|
---|
1156 | void llist_add_to_end(llist_t **list_head, void *data) FAST_FUNC;
|
---|
1157 | void *llist_pop(llist_t **elm) FAST_FUNC;
|
---|
1158 | void llist_unlink(llist_t **head, llist_t *elm) FAST_FUNC;
|
---|
1159 | void llist_free(llist_t *elm, void (*freeit)(void *data)) FAST_FUNC;
|
---|
1160 | llist_t *llist_rev(llist_t *list) FAST_FUNC;
|
---|
1161 | llist_t *llist_find_str(llist_t *first, const char *str) FAST_FUNC;
|
---|
1162 | /* BTW, surprisingly, changing API to
|
---|
1163 | * llist_t *llist_add_to(llist_t *old_head, void *data)
|
---|
1164 | * etc does not result in smaller code... */
|
---|
1165 |
|
---|
1166 | /* start_stop_daemon and udhcpc are special - they want
|
---|
1167 | * to create pidfiles regardless of FEATURE_PIDFILE */
|
---|
1168 | #if ENABLE_FEATURE_PIDFILE || defined(WANT_PIDFILE)
|
---|
1169 | /* True only if we created pidfile which is *file*, not /dev/null etc */
|
---|
1170 | extern smallint wrote_pidfile;
|
---|
1171 | void write_pidfile(const char *path) FAST_FUNC;
|
---|
1172 | #define remove_pidfile(path) do { if (wrote_pidfile) unlink(path); } while (0)
|
---|
1173 | #else
|
---|
1174 | enum { wrote_pidfile = 0 };
|
---|
1175 | #define write_pidfile(path) ((void)0)
|
---|
1176 | #define remove_pidfile(path) ((void)0)
|
---|
1177 | #endif
|
---|
1178 |
|
---|
1179 | enum {
|
---|
1180 | LOGMODE_NONE = 0,
|
---|
1181 | LOGMODE_STDIO = (1 << 0),
|
---|
1182 | LOGMODE_SYSLOG = (1 << 1) * ENABLE_FEATURE_SYSLOG,
|
---|
1183 | LOGMODE_BOTH = LOGMODE_SYSLOG + LOGMODE_STDIO,
|
---|
1184 | };
|
---|
1185 | extern const char *msg_eol;
|
---|
1186 | extern smallint syslog_level;
|
---|
1187 | extern smallint logmode;
|
---|
1188 | extern uint8_t xfunc_error_retval;
|
---|
1189 | extern void (*die_func)(void);
|
---|
1190 | extern void xfunc_die(void) NORETURN FAST_FUNC;
|
---|
1191 | extern void bb_show_usage(void) NORETURN FAST_FUNC;
|
---|
1192 | extern void bb_error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC;
|
---|
1193 | extern void bb_error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC;
|
---|
1194 | extern void bb_perror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC;
|
---|
1195 | extern void bb_simple_perror_msg(const char *s) FAST_FUNC;
|
---|
1196 | extern void bb_perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC;
|
---|
1197 | extern void bb_simple_perror_msg_and_die(const char *s) NORETURN FAST_FUNC;
|
---|
1198 | extern void bb_herror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC;
|
---|
1199 | extern void bb_herror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC;
|
---|
1200 | extern void bb_perror_nomsg_and_die(void) NORETURN FAST_FUNC;
|
---|
1201 | extern void bb_perror_nomsg(void) FAST_FUNC;
|
---|
1202 | extern void bb_verror_msg(const char *s, va_list p, const char *strerr) FAST_FUNC;
|
---|
1203 | extern void bb_logenv_override(void) FAST_FUNC;
|
---|
1204 |
|
---|
1205 | /* We need to export XXX_main from libbusybox
|
---|
1206 | * only if we build "individual" binaries
|
---|
1207 | */
|
---|
1208 | #if ENABLE_FEATURE_INDIVIDUAL
|
---|
1209 | #define MAIN_EXTERNALLY_VISIBLE EXTERNALLY_VISIBLE
|
---|
1210 | #else
|
---|
1211 | #define MAIN_EXTERNALLY_VISIBLE
|
---|
1212 | #endif
|
---|
1213 |
|
---|
1214 |
|
---|
1215 | /* Applets which are useful from another applets */
|
---|
1216 | int bb_cat(char** argv);
|
---|
1217 | /* If shell needs them, they exist even if not enabled as applets */
|
---|
1218 | int echo_main(int argc, char** argv) IF_ECHO(MAIN_EXTERNALLY_VISIBLE);
|
---|
1219 | int printf_main(int argc, char **argv) IF_PRINTF(MAIN_EXTERNALLY_VISIBLE);
|
---|
1220 | int test_main(int argc, char **argv)
|
---|
1221 | #if ENABLE_TEST || ENABLE_TEST1 || ENABLE_TEST2
|
---|
1222 | MAIN_EXTERNALLY_VISIBLE
|
---|
1223 | #endif
|
---|
1224 | ;
|
---|
1225 | int kill_main(int argc, char **argv)
|
---|
1226 | #if ENABLE_KILL || ENABLE_KILLALL || ENABLE_KILLALL5
|
---|
1227 | MAIN_EXTERNALLY_VISIBLE
|
---|
1228 | #endif
|
---|
1229 | ;
|
---|
1230 | /* Similar, but used by chgrp, not shell */
|
---|
1231 | int chown_main(int argc, char **argv) IF_CHOWN(MAIN_EXTERNALLY_VISIBLE);
|
---|
1232 | /* Used by ftpd */
|
---|
1233 | int ls_main(int argc, char **argv) IF_LS(MAIN_EXTERNALLY_VISIBLE);
|
---|
1234 | /* Don't need IF_xxx() guard for these */
|
---|
1235 | int gunzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
1236 | int bunzip2_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
1237 |
|
---|
1238 | #if ENABLE_ROUTE
|
---|
1239 | void bb_displayroutes(int noresolve, int netstatfmt) FAST_FUNC;
|
---|
1240 | #endif
|
---|
1241 |
|
---|
1242 |
|
---|
1243 | /* Networking */
|
---|
1244 | /* This structure defines protocol families and their handlers. */
|
---|
1245 | struct aftype {
|
---|
1246 | const char *name;
|
---|
1247 | const char *title;
|
---|
1248 | int af;
|
---|
1249 | int alen;
|
---|
1250 | char* FAST_FUNC (*print)(unsigned char *);
|
---|
1251 | const char* FAST_FUNC (*sprint)(struct sockaddr *, int numeric);
|
---|
1252 | int FAST_FUNC (*input)(/*int type,*/ const char *bufp, struct sockaddr *);
|
---|
1253 | void FAST_FUNC (*herror)(char *text);
|
---|
1254 | int FAST_FUNC (*rprint)(int options);
|
---|
1255 | int FAST_FUNC (*rinput)(int typ, int ext, char **argv);
|
---|
1256 | /* may modify src */
|
---|
1257 | int FAST_FUNC (*getmask)(char *src, struct sockaddr *mask, char *name);
|
---|
1258 | };
|
---|
1259 | /* This structure defines hardware protocols and their handlers. */
|
---|
1260 | struct hwtype {
|
---|
1261 | const char *name;
|
---|
1262 | const char *title;
|
---|
1263 | int type;
|
---|
1264 | int alen;
|
---|
1265 | char* FAST_FUNC (*print)(unsigned char *);
|
---|
1266 | int FAST_FUNC (*input)(const char *, struct sockaddr *);
|
---|
1267 | int FAST_FUNC (*activate)(int fd);
|
---|
1268 | int suppress_null_addr;
|
---|
1269 | };
|
---|
1270 | extern smallint interface_opt_a;
|
---|
1271 | int display_interfaces(char *ifname) FAST_FUNC;
|
---|
1272 | int in_ether(const char *bufp, struct sockaddr *sap) FAST_FUNC;
|
---|
1273 | #if ENABLE_FEATURE_HWIB
|
---|
1274 | int in_ib(const char *bufp, struct sockaddr *sap) FAST_FUNC;
|
---|
1275 | #else
|
---|
1276 | #define in_ib(a, b) 1 /* fail */
|
---|
1277 | #endif
|
---|
1278 | const struct aftype *get_aftype(const char *name) FAST_FUNC;
|
---|
1279 | const struct hwtype *get_hwtype(const char *name) FAST_FUNC;
|
---|
1280 | const struct hwtype *get_hwntype(int type) FAST_FUNC;
|
---|
1281 |
|
---|
1282 |
|
---|
1283 | #ifndef BUILD_INDIVIDUAL
|
---|
1284 | extern int find_applet_by_name(const char *name) FAST_FUNC;
|
---|
1285 | extern void run_applet_no_and_exit(int a, char **argv) NORETURN FAST_FUNC;
|
---|
1286 | #endif
|
---|
1287 |
|
---|
1288 | #ifdef HAVE_MNTENT_H
|
---|
1289 | extern int match_fstype(const struct mntent *mt, const char *fstypes) FAST_FUNC;
|
---|
1290 | extern struct mntent *find_mount_point(const char *name, int subdir_too) FAST_FUNC;
|
---|
1291 | #endif
|
---|
1292 | extern void erase_mtab(const char * name) FAST_FUNC;
|
---|
1293 | extern unsigned int tty_baud_to_value(speed_t speed) FAST_FUNC;
|
---|
1294 | extern speed_t tty_value_to_baud(unsigned int value) FAST_FUNC;
|
---|
1295 | #if ENABLE_DESKTOP
|
---|
1296 | extern void bb_warn_ignoring_args(char *arg) FAST_FUNC;
|
---|
1297 | #else
|
---|
1298 | # define bb_warn_ignoring_args(arg) ((void)0)
|
---|
1299 | #endif
|
---|
1300 |
|
---|
1301 | extern int get_linux_version_code(void) FAST_FUNC;
|
---|
1302 |
|
---|
1303 | extern char *query_loop(const char *device) FAST_FUNC;
|
---|
1304 | extern int del_loop(const char *device) FAST_FUNC;
|
---|
1305 | /* If *devname is not NULL, use that name, otherwise try to find free one,
|
---|
1306 | * malloc and return it in *devname.
|
---|
1307 | * return value: 1: read-only loopdev was setup, 0: rw, < 0: error */
|
---|
1308 | extern int set_loop(char **devname, const char *file, unsigned long long offset, int ro) FAST_FUNC;
|
---|
1309 |
|
---|
1310 | /* Like bb_ask below, but asks on stdin with no timeout. */
|
---|
1311 | char *bb_ask_stdin(const char * prompt) FAST_FUNC;
|
---|
1312 | //TODO: pass buf pointer or return allocated buf (avoid statics)?
|
---|
1313 | char *bb_ask(const int fd, int timeout, const char * prompt) FAST_FUNC;
|
---|
1314 | int bb_ask_confirmation(void) FAST_FUNC;
|
---|
1315 |
|
---|
1316 | /* Returns -1 if input is invalid. current_mode is a base for e.g. "u+rw" */
|
---|
1317 | int bb_parse_mode(const char* s, unsigned cur_mode) FAST_FUNC;
|
---|
1318 |
|
---|
1319 | /*
|
---|
1320 | * Config file parser
|
---|
1321 | */
|
---|
1322 | enum {
|
---|
1323 | PARSE_COLLAPSE = 0x00010000, // treat consecutive delimiters as one
|
---|
1324 | PARSE_TRIM = 0x00020000, // trim leading and trailing delimiters
|
---|
1325 | // TODO: COLLAPSE and TRIM seem to always go in pair
|
---|
1326 | PARSE_GREEDY = 0x00040000, // last token takes entire remainder of the line
|
---|
1327 | PARSE_MIN_DIE = 0x00100000, // die if < min tokens found
|
---|
1328 | // keep a copy of current line
|
---|
1329 | PARSE_KEEP_COPY = 0x00200000 * ENABLE_FEATURE_CROND_D,
|
---|
1330 | PARSE_EOL_COMMENTS = 0x00400000, // comments are recognized even if they aren't the first char
|
---|
1331 | // NORMAL is:
|
---|
1332 | // * remove leading and trailing delimiters and collapse
|
---|
1333 | // multiple delimiters into one
|
---|
1334 | // * warn and continue if less than mintokens delimiters found
|
---|
1335 | // * grab everything into last token
|
---|
1336 | // * comments are recognized even if they aren't the first char
|
---|
1337 | PARSE_NORMAL = PARSE_COLLAPSE | PARSE_TRIM | PARSE_GREEDY | PARSE_EOL_COMMENTS,
|
---|
1338 | };
|
---|
1339 | typedef struct parser_t {
|
---|
1340 | FILE *fp;
|
---|
1341 | char *data;
|
---|
1342 | char *line, *nline;
|
---|
1343 | size_t line_alloc, nline_alloc;
|
---|
1344 | int lineno;
|
---|
1345 | } parser_t;
|
---|
1346 | parser_t* config_open(const char *filename) FAST_FUNC;
|
---|
1347 | parser_t* config_open2(const char *filename, FILE* FAST_FUNC (*fopen_func)(const char *path)) FAST_FUNC;
|
---|
1348 | /* delims[0] is a comment char (use '\0' to disable), the rest are token delimiters */
|
---|
1349 | int config_read(parser_t *parser, char **tokens, unsigned flags, const char *delims) FAST_FUNC;
|
---|
1350 | #define config_read(parser, tokens, max, min, str, flags) \
|
---|
1351 | config_read(parser, tokens, ((flags) | (((min) & 0xFF) << 8) | ((max) & 0xFF)), str)
|
---|
1352 | void config_close(parser_t *parser) FAST_FUNC;
|
---|
1353 |
|
---|
1354 | /* Concatenate path and filename to new allocated buffer.
|
---|
1355 | * Add "/" only as needed (no duplicate "//" are produced).
|
---|
1356 | * If path is NULL, it is assumed to be "/".
|
---|
1357 | * filename should not be NULL. */
|
---|
1358 | char *concat_path_file(const char *path, const char *filename) FAST_FUNC;
|
---|
1359 | /* Returns NULL on . and .. */
|
---|
1360 | char *concat_subpath_file(const char *path, const char *filename) FAST_FUNC;
|
---|
1361 |
|
---|
1362 |
|
---|
1363 | int bb_make_directory(char *path, long mode, int flags) FAST_FUNC;
|
---|
1364 |
|
---|
1365 | int get_signum(const char *name) FAST_FUNC;
|
---|
1366 | const char *get_signame(int number) FAST_FUNC;
|
---|
1367 | void print_signames(void) FAST_FUNC;
|
---|
1368 |
|
---|
1369 | char *bb_simplify_path(const char *path) FAST_FUNC;
|
---|
1370 | /* Returns ptr to NUL */
|
---|
1371 | char *bb_simplify_abs_path_inplace(char *path) FAST_FUNC;
|
---|
1372 |
|
---|
1373 | #ifndef LOGIN_FAIL_DELAY
|
---|
1374 | #define LOGIN_FAIL_DELAY 3
|
---|
1375 | #endif
|
---|
1376 | extern void bb_do_delay(int seconds) FAST_FUNC;
|
---|
1377 | extern void change_identity(const struct passwd *pw) FAST_FUNC;
|
---|
1378 | extern void run_shell(const char *shell, int loginshell, const char **args) NORETURN FAST_FUNC;
|
---|
1379 |
|
---|
1380 | /* Returns $SHELL, getpwuid(getuid())->pw_shell, or DEFAULT_SHELL.
|
---|
1381 | * Note that getpwuid result might need xstrdup'ing
|
---|
1382 | * if there is a possibility of intervening getpwxxx() calls.
|
---|
1383 | */
|
---|
1384 | const char *get_shell_name(void) FAST_FUNC;
|
---|
1385 |
|
---|
1386 | #if ENABLE_SELINUX
|
---|
1387 | extern void renew_current_security_context(void) FAST_FUNC;
|
---|
1388 | extern void set_current_security_context(security_context_t sid) FAST_FUNC;
|
---|
1389 | extern context_t set_security_context_component(security_context_t cur_context,
|
---|
1390 | char *user, char *role, char *type, char *range) FAST_FUNC;
|
---|
1391 | extern void setfscreatecon_or_die(security_context_t scontext) FAST_FUNC;
|
---|
1392 | extern void selinux_preserve_fcontext(int fdesc) FAST_FUNC;
|
---|
1393 | #else
|
---|
1394 | #define selinux_preserve_fcontext(fdesc) ((void)0)
|
---|
1395 | #endif
|
---|
1396 | extern void selinux_or_die(void) FAST_FUNC;
|
---|
1397 |
|
---|
1398 |
|
---|
1399 | /* setup_environment:
|
---|
1400 | * if chdir pw->pw_dir: ok: else if to_tmp == 1: goto /tmp else: goto / or die
|
---|
1401 | * if clear_env = 1: cd(pw->pw_dir), clear environment, then set
|
---|
1402 | * TERM=(old value)
|
---|
1403 | * USER=pw->pw_name, LOGNAME=pw->pw_name
|
---|
1404 | * PATH=bb_default_[root_]path
|
---|
1405 | * HOME=pw->pw_dir
|
---|
1406 | * SHELL=shell
|
---|
1407 | * else if change_env = 1:
|
---|
1408 | * if not root (if pw->pw_uid != 0):
|
---|
1409 | * USER=pw->pw_name, LOGNAME=pw->pw_name
|
---|
1410 | * HOME=pw->pw_dir
|
---|
1411 | * SHELL=shell
|
---|
1412 | * else does nothing
|
---|
1413 | */
|
---|
1414 | #define SETUP_ENV_CHANGEENV (1 << 0)
|
---|
1415 | #define SETUP_ENV_CLEARENV (1 << 1)
|
---|
1416 | #define SETUP_ENV_TO_TMP (1 << 2)
|
---|
1417 | #define SETUP_ENV_NO_CHDIR (1 << 4)
|
---|
1418 | void setup_environment(const char *shell, int flags, const struct passwd *pw) FAST_FUNC;
|
---|
1419 | void nuke_str(char *str) FAST_FUNC;
|
---|
1420 | int check_password(const struct passwd *pw, const char *plaintext) FAST_FUNC;
|
---|
1421 | int ask_and_check_password_extended(const struct passwd *pw, int timeout, const char *prompt) FAST_FUNC;
|
---|
1422 | int ask_and_check_password(const struct passwd *pw) FAST_FUNC;
|
---|
1423 | /* Returns a malloced string */
|
---|
1424 | #if !ENABLE_USE_BB_CRYPT
|
---|
1425 | #define pw_encrypt(clear, salt, cleanup) pw_encrypt(clear, salt)
|
---|
1426 | #endif
|
---|
1427 | extern char *pw_encrypt(const char *clear, const char *salt, int cleanup) FAST_FUNC;
|
---|
1428 | extern int obscure(const char *old, const char *newval, const struct passwd *pwdp) FAST_FUNC;
|
---|
1429 | /*
|
---|
1430 | * rnd is additional random input. New one is returned.
|
---|
1431 | * Useful if you call crypt_make_salt many times in a row:
|
---|
1432 | * rnd = crypt_make_salt(buf1, 4, 0);
|
---|
1433 | * rnd = crypt_make_salt(buf2, 4, rnd);
|
---|
1434 | * rnd = crypt_make_salt(buf3, 4, rnd);
|
---|
1435 | * (otherwise we risk having same salt generated)
|
---|
1436 | */
|
---|
1437 | extern int crypt_make_salt(char *p, int cnt /*, int rnd*/) FAST_FUNC;
|
---|
1438 | /* "$N$" + sha_salt_16_bytes + NUL */
|
---|
1439 | #define MAX_PW_SALT_LEN (3 + 16 + 1)
|
---|
1440 | extern char* crypt_make_pw_salt(char p[MAX_PW_SALT_LEN], const char *algo) FAST_FUNC;
|
---|
1441 |
|
---|
1442 |
|
---|
1443 | /* Returns number of lines changed, or -1 on error */
|
---|
1444 | #if !(ENABLE_FEATURE_ADDUSER_TO_GROUP || ENABLE_FEATURE_DEL_USER_FROM_GROUP)
|
---|
1445 | #define update_passwd(filename, username, data, member) \
|
---|
1446 | update_passwd(filename, username, data)
|
---|
1447 | #endif
|
---|
1448 | extern int update_passwd(const char *filename,
|
---|
1449 | const char *username,
|
---|
1450 | const char *data,
|
---|
1451 | const char *member) FAST_FUNC;
|
---|
1452 |
|
---|
1453 | int index_in_str_array(const char *const string_array[], const char *key) FAST_FUNC;
|
---|
1454 | int index_in_strings(const char *strings, const char *key) FAST_FUNC;
|
---|
1455 | int index_in_substr_array(const char *const string_array[], const char *key) FAST_FUNC;
|
---|
1456 | int index_in_substrings(const char *strings, const char *key) FAST_FUNC;
|
---|
1457 | const char *nth_string(const char *strings, int n) FAST_FUNC;
|
---|
1458 |
|
---|
1459 | extern void print_login_issue(const char *issue_file, const char *tty) FAST_FUNC;
|
---|
1460 | extern void print_login_prompt(void) FAST_FUNC;
|
---|
1461 |
|
---|
1462 | char *xmalloc_ttyname(int fd) FAST_FUNC RETURNS_MALLOC;
|
---|
1463 | /* NB: typically you want to pass fd 0, not 1. Think 'applet | grep something' */
|
---|
1464 | int get_terminal_width_height(int fd, unsigned *width, unsigned *height) FAST_FUNC;
|
---|
1465 | int get_terminal_width(int fd) FAST_FUNC;
|
---|
1466 |
|
---|
1467 | int tcsetattr_stdin_TCSANOW(const struct termios *tp) FAST_FUNC;
|
---|
1468 |
|
---|
1469 | /* NB: "unsigned request" is crucial! "int request" will break some arches! */
|
---|
1470 | int ioctl_or_perror(int fd, unsigned request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5))) FAST_FUNC;
|
---|
1471 | int ioctl_or_perror_and_die(int fd, unsigned request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5))) FAST_FUNC;
|
---|
1472 | #if ENABLE_IOCTL_HEX2STR_ERROR
|
---|
1473 | int bb_ioctl_or_warn(int fd, unsigned request, void *argp, const char *ioctl_name) FAST_FUNC;
|
---|
1474 | int bb_xioctl(int fd, unsigned request, void *argp, const char *ioctl_name) FAST_FUNC;
|
---|
1475 | #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp,#request)
|
---|
1476 | #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp,#request)
|
---|
1477 | #else
|
---|
1478 | int bb_ioctl_or_warn(int fd, unsigned request, void *argp) FAST_FUNC;
|
---|
1479 | int bb_xioctl(int fd, unsigned request, void *argp) FAST_FUNC;
|
---|
1480 | #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp)
|
---|
1481 | #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp)
|
---|
1482 | #endif
|
---|
1483 |
|
---|
1484 | char *is_in_ino_dev_hashtable(const struct stat *statbuf) FAST_FUNC;
|
---|
1485 | void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name) FAST_FUNC;
|
---|
1486 | void reset_ino_dev_hashtable(void) FAST_FUNC;
|
---|
1487 | #ifdef __GLIBC__
|
---|
1488 | /* At least glibc has horrendously large inline for this, so wrap it */
|
---|
1489 | unsigned long long bb_makedev(unsigned major, unsigned minor) FAST_FUNC;
|
---|
1490 | #undef makedev
|
---|
1491 | #define makedev(a,b) bb_makedev(a,b)
|
---|
1492 | #endif
|
---|
1493 |
|
---|
1494 |
|
---|
1495 | /* "Keycodes" that report an escape sequence.
|
---|
1496 | * We use something which fits into signed char,
|
---|
1497 | * yet doesn't represent any valid Unicode character.
|
---|
1498 | * Also, -1 is reserved for error indication and we don't use it. */
|
---|
1499 | enum {
|
---|
1500 | KEYCODE_UP = -2,
|
---|
1501 | KEYCODE_DOWN = -3,
|
---|
1502 | KEYCODE_RIGHT = -4,
|
---|
1503 | KEYCODE_LEFT = -5,
|
---|
1504 | KEYCODE_HOME = -6,
|
---|
1505 | KEYCODE_END = -7,
|
---|
1506 | KEYCODE_INSERT = -8,
|
---|
1507 | KEYCODE_DELETE = -9,
|
---|
1508 | KEYCODE_PAGEUP = -10,
|
---|
1509 | KEYCODE_PAGEDOWN = -11,
|
---|
1510 | KEYCODE_BACKSPACE = -12, /* Used only if Alt/Ctrl/Shifted */
|
---|
1511 | KEYCODE_D = -13, /* Used only if Alted */
|
---|
1512 | #if 0
|
---|
1513 | KEYCODE_FUN1 = ,
|
---|
1514 | KEYCODE_FUN2 = ,
|
---|
1515 | KEYCODE_FUN3 = ,
|
---|
1516 | KEYCODE_FUN4 = ,
|
---|
1517 | KEYCODE_FUN5 = ,
|
---|
1518 | KEYCODE_FUN6 = ,
|
---|
1519 | KEYCODE_FUN7 = ,
|
---|
1520 | KEYCODE_FUN8 = ,
|
---|
1521 | KEYCODE_FUN9 = ,
|
---|
1522 | KEYCODE_FUN10 = ,
|
---|
1523 | KEYCODE_FUN11 = ,
|
---|
1524 | KEYCODE_FUN12 = ,
|
---|
1525 | #endif
|
---|
1526 | /* ^^^^^ Be sure that last defined value is small enough.
|
---|
1527 | * Current read_key() code allows going up to -32 (0xfff..fffe0).
|
---|
1528 | * This gives three upper bits in LSB to play with:
|
---|
1529 | * KEYCODE_foo values are 0xfff..fffXX, lowest XX bits are: scavvvvv,
|
---|
1530 | * s=0 if SHIFT, c=0 if CTRL, a=0 if ALT,
|
---|
1531 | * vvvvv bits are the same for same key regardless of "shift bits".
|
---|
1532 | */
|
---|
1533 | //KEYCODE_SHIFT_... = KEYCODE_... & ~0x80,
|
---|
1534 | KEYCODE_CTRL_RIGHT = KEYCODE_RIGHT & ~0x40,
|
---|
1535 | KEYCODE_CTRL_LEFT = KEYCODE_LEFT & ~0x40,
|
---|
1536 | KEYCODE_ALT_RIGHT = KEYCODE_RIGHT & ~0x20,
|
---|
1537 | KEYCODE_ALT_LEFT = KEYCODE_LEFT & ~0x20,
|
---|
1538 | KEYCODE_ALT_BACKSPACE = KEYCODE_BACKSPACE & ~0x20,
|
---|
1539 | KEYCODE_ALT_D = KEYCODE_D & ~0x20,
|
---|
1540 |
|
---|
1541 | KEYCODE_CURSOR_POS = -0x100, /* 0xfff..fff00 */
|
---|
1542 | /* How long is the longest ESC sequence we know?
|
---|
1543 | * We want it big enough to be able to contain
|
---|
1544 | * cursor position sequence "ESC [ 9999 ; 9999 R"
|
---|
1545 | */
|
---|
1546 | KEYCODE_BUFFER_SIZE = 16
|
---|
1547 | };
|
---|
1548 | /* Note: fd may be in blocking or non-blocking mode, both make sense.
|
---|
1549 | * For one, less uses non-blocking mode.
|
---|
1550 | * Only the first read syscall inside read_key may block indefinitely
|
---|
1551 | * (unless fd is in non-blocking mode),
|
---|
1552 | * subsequent reads will time out after a few milliseconds.
|
---|
1553 | * Return of -1 means EOF or error (errno == 0 on EOF).
|
---|
1554 | * buffer[0] is used as a counter of buffered chars and must be 0
|
---|
1555 | * on first call.
|
---|
1556 | * timeout:
|
---|
1557 | * -2: do not poll for input;
|
---|
1558 | * -1: poll(-1) (i.e. block);
|
---|
1559 | * >=0: poll for TIMEOUT milliseconds, return -1/EAGAIN on timeout
|
---|
1560 | */
|
---|
1561 | int64_t read_key(int fd, char *buffer, int timeout) FAST_FUNC;
|
---|
1562 | void read_key_ungets(char *buffer, const char *str, unsigned len) FAST_FUNC;
|
---|
1563 |
|
---|
1564 |
|
---|
1565 | #if ENABLE_FEATURE_EDITING
|
---|
1566 | /* It's NOT just ENABLEd or disabled. It's a number: */
|
---|
1567 | # if defined CONFIG_FEATURE_EDITING_HISTORY && CONFIG_FEATURE_EDITING_HISTORY > 0
|
---|
1568 | # define MAX_HISTORY (CONFIG_FEATURE_EDITING_HISTORY + 0)
|
---|
1569 | unsigned size_from_HISTFILESIZE(const char *hp) FAST_FUNC;
|
---|
1570 | # else
|
---|
1571 | # define MAX_HISTORY 0
|
---|
1572 | # endif
|
---|
1573 | typedef struct line_input_t {
|
---|
1574 | int flags;
|
---|
1575 | const char *path_lookup;
|
---|
1576 | # if MAX_HISTORY
|
---|
1577 | int cnt_history;
|
---|
1578 | int cur_history;
|
---|
1579 | int max_history; /* must never be <= 0 */
|
---|
1580 | # if ENABLE_FEATURE_EDITING_SAVEHISTORY
|
---|
1581 | /* meaning of this field depends on FEATURE_EDITING_SAVE_ON_EXIT:
|
---|
1582 | * if !FEATURE_EDITING_SAVE_ON_EXIT: "how many lines are
|
---|
1583 | * in on-disk history"
|
---|
1584 | * if FEATURE_EDITING_SAVE_ON_EXIT: "how many in-memory lines are
|
---|
1585 | * also in on-disk history (and thus need to be skipped on save)"
|
---|
1586 | */
|
---|
1587 | unsigned cnt_history_in_file;
|
---|
1588 | const char *hist_file;
|
---|
1589 | # endif
|
---|
1590 | char *history[MAX_HISTORY + 1];
|
---|
1591 | # endif
|
---|
1592 | } line_input_t;
|
---|
1593 | enum {
|
---|
1594 | DO_HISTORY = 1 * (MAX_HISTORY > 0),
|
---|
1595 | TAB_COMPLETION = 2 * ENABLE_FEATURE_TAB_COMPLETION,
|
---|
1596 | USERNAME_COMPLETION = 4 * ENABLE_FEATURE_USERNAME_COMPLETION,
|
---|
1597 | VI_MODE = 8 * ENABLE_FEATURE_EDITING_VI,
|
---|
1598 | WITH_PATH_LOOKUP = 0x10,
|
---|
1599 | FOR_SHELL = DO_HISTORY | TAB_COMPLETION | USERNAME_COMPLETION,
|
---|
1600 | };
|
---|
1601 | line_input_t *new_line_input_t(int flags) FAST_FUNC;
|
---|
1602 | /* So far static: void free_line_input_t(line_input_t *n) FAST_FUNC; */
|
---|
1603 | /*
|
---|
1604 | * maxsize must be >= 2.
|
---|
1605 | * Returns:
|
---|
1606 | * -1 on read errors or EOF, or on bare Ctrl-D,
|
---|
1607 | * 0 on ctrl-C (the line entered is still returned in 'command'),
|
---|
1608 | * >0 length of input string, including terminating '\n'
|
---|
1609 | */
|
---|
1610 | int read_line_input(line_input_t *st, const char *prompt, char *command, int maxsize, int timeout) FAST_FUNC;
|
---|
1611 | void show_history(const line_input_t *st) FAST_FUNC;
|
---|
1612 | # if ENABLE_FEATURE_EDITING_SAVE_ON_EXIT
|
---|
1613 | void save_history(line_input_t *st);
|
---|
1614 | # endif
|
---|
1615 | #else
|
---|
1616 | #define MAX_HISTORY 0
|
---|
1617 | int read_line_input(const char* prompt, char* command, int maxsize) FAST_FUNC;
|
---|
1618 | #define read_line_input(state, prompt, command, maxsize, timeout) \
|
---|
1619 | read_line_input(prompt, command, maxsize)
|
---|
1620 | #endif
|
---|
1621 |
|
---|
1622 |
|
---|
1623 | #ifndef COMM_LEN
|
---|
1624 | # ifdef TASK_COMM_LEN
|
---|
1625 | enum { COMM_LEN = TASK_COMM_LEN };
|
---|
1626 | # else
|
---|
1627 | /* synchronize with sizeof(task_struct.comm) in /usr/include/linux/sched.h */
|
---|
1628 | enum { COMM_LEN = 16 };
|
---|
1629 | # endif
|
---|
1630 | #endif
|
---|
1631 |
|
---|
1632 | struct smaprec {
|
---|
1633 | unsigned long mapped_rw;
|
---|
1634 | unsigned long mapped_ro;
|
---|
1635 | unsigned long shared_clean;
|
---|
1636 | unsigned long shared_dirty;
|
---|
1637 | unsigned long private_clean;
|
---|
1638 | unsigned long private_dirty;
|
---|
1639 | unsigned long stack;
|
---|
1640 | unsigned long smap_pss, smap_swap;
|
---|
1641 | unsigned long smap_size;
|
---|
1642 | unsigned long smap_start;
|
---|
1643 | char smap_mode[5];
|
---|
1644 | char *smap_name;
|
---|
1645 | };
|
---|
1646 |
|
---|
1647 | #if !ENABLE_PMAP
|
---|
1648 | #define procps_read_smaps(pid, total, cb, data) \
|
---|
1649 | procps_read_smaps(pid, total)
|
---|
1650 | #endif
|
---|
1651 | int FAST_FUNC procps_read_smaps(pid_t pid, struct smaprec *total,
|
---|
1652 | void (*cb)(struct smaprec *, void *), void *data);
|
---|
1653 |
|
---|
1654 | typedef struct procps_status_t {
|
---|
1655 | DIR *dir;
|
---|
1656 | IF_FEATURE_SHOW_THREADS(DIR *task_dir;)
|
---|
1657 | uint8_t shift_pages_to_bytes;
|
---|
1658 | uint8_t shift_pages_to_kb;
|
---|
1659 | /* Fields are set to 0/NULL if failed to determine (or not requested) */
|
---|
1660 | uint16_t argv_len;
|
---|
1661 | char *argv0;
|
---|
1662 | char *exe;
|
---|
1663 | IF_SELINUX(char *context;)
|
---|
1664 | IF_FEATURE_SHOW_THREADS(unsigned main_thread_pid;)
|
---|
1665 | /* Everything below must contain no ptrs to malloc'ed data:
|
---|
1666 | * it is memset(0) for each process in procps_scan() */
|
---|
1667 | unsigned long vsz, rss; /* we round it to kbytes */
|
---|
1668 | unsigned long stime, utime;
|
---|
1669 | unsigned long start_time;
|
---|
1670 | unsigned pid;
|
---|
1671 | unsigned ppid;
|
---|
1672 | unsigned pgid;
|
---|
1673 | unsigned sid;
|
---|
1674 | unsigned uid;
|
---|
1675 | unsigned gid;
|
---|
1676 | #if ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS
|
---|
1677 | unsigned ruid;
|
---|
1678 | unsigned rgid;
|
---|
1679 | int niceness;
|
---|
1680 | #endif
|
---|
1681 | unsigned tty_major,tty_minor;
|
---|
1682 | #if ENABLE_FEATURE_TOPMEM
|
---|
1683 | struct smaprec smaps;
|
---|
1684 | #endif
|
---|
1685 | char state[4];
|
---|
1686 | /* basename of executable in exec(2), read from /proc/N/stat
|
---|
1687 | * (if executable is symlink or script, it is NOT replaced
|
---|
1688 | * by link target or interpreter name) */
|
---|
1689 | char comm[COMM_LEN];
|
---|
1690 | /* user/group? - use passwd/group parsing functions */
|
---|
1691 | #if ENABLE_FEATURE_TOP_SMP_PROCESS
|
---|
1692 | int last_seen_on_cpu;
|
---|
1693 | #endif
|
---|
1694 | } procps_status_t;
|
---|
1695 | /* flag bits for procps_scan(xx, flags) calls */
|
---|
1696 | enum {
|
---|
1697 | PSSCAN_PID = 1 << 0,
|
---|
1698 | PSSCAN_PPID = 1 << 1,
|
---|
1699 | PSSCAN_PGID = 1 << 2,
|
---|
1700 | PSSCAN_SID = 1 << 3,
|
---|
1701 | PSSCAN_UIDGID = 1 << 4,
|
---|
1702 | PSSCAN_COMM = 1 << 5,
|
---|
1703 | /* PSSCAN_CMD = 1 << 6, - use read_cmdline instead */
|
---|
1704 | PSSCAN_ARGV0 = 1 << 7,
|
---|
1705 | PSSCAN_EXE = 1 << 8,
|
---|
1706 | PSSCAN_STATE = 1 << 9,
|
---|
1707 | PSSCAN_VSZ = 1 << 10,
|
---|
1708 | PSSCAN_RSS = 1 << 11,
|
---|
1709 | PSSCAN_STIME = 1 << 12,
|
---|
1710 | PSSCAN_UTIME = 1 << 13,
|
---|
1711 | PSSCAN_TTY = 1 << 14,
|
---|
1712 | PSSCAN_SMAPS = (1 << 15) * ENABLE_FEATURE_TOPMEM,
|
---|
1713 | /* NB: used by find_pid_by_name(). Any applet using it
|
---|
1714 | * needs to be mentioned here. */
|
---|
1715 | PSSCAN_ARGVN = (1 << 16) * (ENABLE_KILLALL
|
---|
1716 | || ENABLE_PGREP || ENABLE_PKILL
|
---|
1717 | || ENABLE_PIDOF
|
---|
1718 | || ENABLE_SESTATUS
|
---|
1719 | ),
|
---|
1720 | PSSCAN_CONTEXT = (1 << 17) * ENABLE_SELINUX,
|
---|
1721 | PSSCAN_START_TIME = 1 << 18,
|
---|
1722 | PSSCAN_CPU = (1 << 19) * ENABLE_FEATURE_TOP_SMP_PROCESS,
|
---|
1723 | PSSCAN_NICE = (1 << 20) * ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS,
|
---|
1724 | PSSCAN_RUIDGID = (1 << 21) * ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS,
|
---|
1725 | PSSCAN_TASKS = (1 << 22) * ENABLE_FEATURE_SHOW_THREADS,
|
---|
1726 | };
|
---|
1727 | //procps_status_t* alloc_procps_scan(void) FAST_FUNC;
|
---|
1728 | void free_procps_scan(procps_status_t* sp) FAST_FUNC;
|
---|
1729 | procps_status_t* procps_scan(procps_status_t* sp, int flags) FAST_FUNC;
|
---|
1730 | /* Format cmdline (up to col chars) into char buf[size] */
|
---|
1731 | /* Puts [comm] if cmdline is empty (-> process is a kernel thread) */
|
---|
1732 | void read_cmdline(char *buf, int size, unsigned pid, const char *comm) FAST_FUNC;
|
---|
1733 | pid_t *find_pid_by_name(const char* procName) FAST_FUNC;
|
---|
1734 | pid_t *pidlist_reverse(pid_t *pidList) FAST_FUNC;
|
---|
1735 | int starts_with_cpu(const char *str) FAST_FUNC;
|
---|
1736 | unsigned get_cpu_count(void) FAST_FUNC;
|
---|
1737 |
|
---|
1738 |
|
---|
1739 | /* Use strict=1 if you process input from untrusted source:
|
---|
1740 | * it will return NULL on invalid %xx (bad hex chars)
|
---|
1741 | * and str + 1 if decoded char is / or NUL.
|
---|
1742 | * In non-strict mode, it always succeeds (returns str),
|
---|
1743 | * and also it additionally decoded '+' to space.
|
---|
1744 | */
|
---|
1745 | char *percent_decode_in_place(char *str, int strict) FAST_FUNC;
|
---|
1746 |
|
---|
1747 |
|
---|
1748 | extern const char bb_uuenc_tbl_base64[] ALIGN1;
|
---|
1749 | extern const char bb_uuenc_tbl_std[] ALIGN1;
|
---|
1750 | void bb_uuencode(char *store, const void *s, int length, const char *tbl) FAST_FUNC;
|
---|
1751 | enum {
|
---|
1752 | BASE64_FLAG_UU_STOP = 0x100,
|
---|
1753 | /* Sign-extends to a value which never matches fgetc result: */
|
---|
1754 | BASE64_FLAG_NO_STOP_CHAR = 0x80,
|
---|
1755 | };
|
---|
1756 | const char *decode_base64(char **pp_dst, const char *src) FAST_FUNC;
|
---|
1757 | void read_base64(FILE *src_stream, FILE *dst_stream, int flags) FAST_FUNC;
|
---|
1758 |
|
---|
1759 | typedef struct md5_ctx_t {
|
---|
1760 | uint8_t wbuffer[64]; /* always correctly aligned for uint64_t */
|
---|
1761 | void (*process_block)(struct md5_ctx_t*) FAST_FUNC;
|
---|
1762 | uint64_t total64; /* must be directly before hash[] */
|
---|
1763 | uint32_t hash[8]; /* 4 elements for md5, 5 for sha1, 8 for sha256 */
|
---|
1764 | } md5_ctx_t;
|
---|
1765 | typedef struct md5_ctx_t sha1_ctx_t;
|
---|
1766 | typedef struct md5_ctx_t sha256_ctx_t;
|
---|
1767 | typedef struct sha512_ctx_t {
|
---|
1768 | uint64_t total64[2]; /* must be directly before hash[] */
|
---|
1769 | uint64_t hash[8];
|
---|
1770 | uint8_t wbuffer[128]; /* always correctly aligned for uint64_t */
|
---|
1771 | } sha512_ctx_t;
|
---|
1772 | typedef struct sha3_ctx_t {
|
---|
1773 | uint64_t state[25];
|
---|
1774 | unsigned bytes_queued;
|
---|
1775 | unsigned input_block_bytes;
|
---|
1776 | } sha3_ctx_t;
|
---|
1777 | void md5_begin(md5_ctx_t *ctx) FAST_FUNC;
|
---|
1778 | void md5_hash(md5_ctx_t *ctx, const void *buffer, size_t len) FAST_FUNC;
|
---|
1779 | void md5_end(md5_ctx_t *ctx, void *resbuf) FAST_FUNC;
|
---|
1780 | void sha1_begin(sha1_ctx_t *ctx) FAST_FUNC;
|
---|
1781 | #define sha1_hash md5_hash
|
---|
1782 | void sha1_end(sha1_ctx_t *ctx, void *resbuf) FAST_FUNC;
|
---|
1783 | void sha256_begin(sha256_ctx_t *ctx) FAST_FUNC;
|
---|
1784 | #define sha256_hash md5_hash
|
---|
1785 | #define sha256_end sha1_end
|
---|
1786 | void sha512_begin(sha512_ctx_t *ctx) FAST_FUNC;
|
---|
1787 | void sha512_hash(sha512_ctx_t *ctx, const void *buffer, size_t len) FAST_FUNC;
|
---|
1788 | void sha512_end(sha512_ctx_t *ctx, void *resbuf) FAST_FUNC;
|
---|
1789 | void sha3_begin(sha3_ctx_t *ctx) FAST_FUNC;
|
---|
1790 | void sha3_hash(sha3_ctx_t *ctx, const void *buffer, size_t len) FAST_FUNC;
|
---|
1791 | void sha3_end(sha3_ctx_t *ctx, void *resbuf) FAST_FUNC;
|
---|
1792 |
|
---|
1793 | extern uint32_t *global_crc32_table;
|
---|
1794 | uint32_t *crc32_filltable(uint32_t *tbl256, int endian) FAST_FUNC;
|
---|
1795 | uint32_t crc32_block_endian1(uint32_t val, const void *buf, unsigned len, uint32_t *crc_table) FAST_FUNC;
|
---|
1796 | uint32_t crc32_block_endian0(uint32_t val, const void *buf, unsigned len, uint32_t *crc_table) FAST_FUNC;
|
---|
1797 |
|
---|
1798 | typedef struct masks_labels_t {
|
---|
1799 | const char *labels;
|
---|
1800 | const int masks[];
|
---|
1801 | } masks_labels_t;
|
---|
1802 | int print_flags_separated(const int *masks, const char *labels,
|
---|
1803 | int flags, const char *separator) FAST_FUNC;
|
---|
1804 | int print_flags(const masks_labels_t *ml, int flags) FAST_FUNC;
|
---|
1805 |
|
---|
1806 | typedef struct bb_progress_t {
|
---|
1807 | unsigned last_size;
|
---|
1808 | unsigned last_update_sec;
|
---|
1809 | unsigned last_change_sec;
|
---|
1810 | unsigned start_sec;
|
---|
1811 | const char *curfile;
|
---|
1812 | } bb_progress_t;
|
---|
1813 |
|
---|
1814 | #define is_bb_progress_inited(p) ((p)->curfile != NULL)
|
---|
1815 | #define bb_progress_free(p) do { \
|
---|
1816 | if (ENABLE_UNICODE_SUPPORT) free((char*)((p)->curfile)); \
|
---|
1817 | (p)->curfile = NULL; \
|
---|
1818 | } while (0)
|
---|
1819 | void bb_progress_init(bb_progress_t *p, const char *curfile) FAST_FUNC;
|
---|
1820 | void bb_progress_update(bb_progress_t *p,
|
---|
1821 | uoff_t beg_range,
|
---|
1822 | uoff_t transferred,
|
---|
1823 | uoff_t totalsize) FAST_FUNC;
|
---|
1824 |
|
---|
1825 | unsigned ubi_devnum_from_devname(const char *str) FAST_FUNC;
|
---|
1826 | int ubi_get_volid_by_name(unsigned ubi_devnum, const char *vol_name) FAST_FUNC;
|
---|
1827 |
|
---|
1828 |
|
---|
1829 | extern const char *applet_name;
|
---|
1830 |
|
---|
1831 | /* Some older linkers don't perform string merging, we used to have common strings
|
---|
1832 | * as global arrays to do it by hand. But:
|
---|
1833 | * (1) newer linkers do it themselves,
|
---|
1834 | * (2) however, they DONT merge string constants with global arrays,
|
---|
1835 | * even if the value is the same (!). Thus global arrays actually
|
---|
1836 | * increased size a bit: for example, "/etc/passwd" string from libc
|
---|
1837 | * wasn't merged with bb_path_passwd_file[] array!
|
---|
1838 | * Therefore now we use #defines.
|
---|
1839 | */
|
---|
1840 | /* "BusyBox vN.N.N (timestamp or extra_version)" */
|
---|
1841 | extern const char bb_banner[] ALIGN1;
|
---|
1842 | extern const char bb_msg_memory_exhausted[] ALIGN1;
|
---|
1843 | extern const char bb_msg_invalid_date[] ALIGN1;
|
---|
1844 | #define bb_msg_read_error "read error"
|
---|
1845 | #define bb_msg_write_error "write error"
|
---|
1846 | extern const char bb_msg_unknown[] ALIGN1;
|
---|
1847 | extern const char bb_msg_can_not_create_raw_socket[] ALIGN1;
|
---|
1848 | extern const char bb_msg_perm_denied_are_you_root[] ALIGN1;
|
---|
1849 | extern const char bb_msg_you_must_be_root[] ALIGN1;
|
---|
1850 | extern const char bb_msg_requires_arg[] ALIGN1;
|
---|
1851 | extern const char bb_msg_invalid_arg_to[] ALIGN1;
|
---|
1852 | extern const char bb_msg_standard_input[] ALIGN1;
|
---|
1853 | extern const char bb_msg_standard_output[] ALIGN1;
|
---|
1854 |
|
---|
1855 | /* NB: (bb_hexdigits_upcase[i] | 0x20) -> lowercase hex digit */
|
---|
1856 | extern const char bb_hexdigits_upcase[] ALIGN1;
|
---|
1857 |
|
---|
1858 | extern const char bb_path_wtmp_file[] ALIGN1;
|
---|
1859 |
|
---|
1860 | /* Busybox mount uses either /proc/mounts or /etc/mtab to
|
---|
1861 | * get the list of currently mounted filesystems */
|
---|
1862 | #define bb_path_mtab_file IF_FEATURE_MTAB_SUPPORT("/etc/mtab")IF_NOT_FEATURE_MTAB_SUPPORT("/proc/mounts")
|
---|
1863 |
|
---|
1864 | #define bb_path_passwd_file _PATH_PASSWD
|
---|
1865 | #define bb_path_group_file _PATH_GROUP
|
---|
1866 | #define bb_path_shadow_file _PATH_SHADOW
|
---|
1867 | #define bb_path_gshadow_file _PATH_GSHADOW
|
---|
1868 |
|
---|
1869 | #define bb_path_motd_file "/etc/motd"
|
---|
1870 |
|
---|
1871 | #define bb_dev_null "/dev/null"
|
---|
1872 | extern const char bb_busybox_exec_path[] ALIGN1;
|
---|
1873 | /* util-linux manpage says /sbin:/bin:/usr/sbin:/usr/bin,
|
---|
1874 | * but I want to save a few bytes here */
|
---|
1875 | extern const char bb_PATH_root_path[] ALIGN1; /* "PATH=/sbin:/usr/sbin:/bin:/usr/bin" */
|
---|
1876 | #define bb_default_root_path (bb_PATH_root_path + sizeof("PATH"))
|
---|
1877 | #define bb_default_path (bb_PATH_root_path + sizeof("PATH=/sbin:/usr/sbin"))
|
---|
1878 |
|
---|
1879 | extern const int const_int_0;
|
---|
1880 | //extern const int const_int_1;
|
---|
1881 |
|
---|
1882 | /* This struct is deliberately not defined. */
|
---|
1883 | /* See docs/keep_data_small.txt */
|
---|
1884 | struct globals;
|
---|
1885 | /* '*const' ptr makes gcc optimize code much better.
|
---|
1886 | * Magic prevents ptr_to_globals from going into rodata.
|
---|
1887 | * If you want to assign a value, use SET_PTR_TO_GLOBALS(x) */
|
---|
1888 | extern struct globals *const ptr_to_globals;
|
---|
1889 | /* At least gcc 3.4.6 on mipsel system needs optimization barrier */
|
---|
1890 | #define barrier() __asm__ __volatile__("":::"memory")
|
---|
1891 | #define SET_PTR_TO_GLOBALS(x) do { \
|
---|
1892 | (*(struct globals**)&ptr_to_globals) = (void*)(x); \
|
---|
1893 | barrier(); \
|
---|
1894 | } while (0)
|
---|
1895 | #define FREE_PTR_TO_GLOBALS() do { \
|
---|
1896 | if (ENABLE_FEATURE_CLEAN_UP) { \
|
---|
1897 | free(ptr_to_globals); \
|
---|
1898 | } \
|
---|
1899 | } while (0)
|
---|
1900 |
|
---|
1901 | /* You can change LIBBB_DEFAULT_LOGIN_SHELL, but don't use it,
|
---|
1902 | * use bb_default_login_shell and following defines.
|
---|
1903 | * If you change LIBBB_DEFAULT_LOGIN_SHELL,
|
---|
1904 | * don't forget to change increment constant. */
|
---|
1905 | #define LIBBB_DEFAULT_LOGIN_SHELL "-/bin/sh"
|
---|
1906 | extern const char bb_default_login_shell[] ALIGN1;
|
---|
1907 | /* "/bin/sh" */
|
---|
1908 | #define DEFAULT_SHELL (bb_default_login_shell+1)
|
---|
1909 | /* "sh" */
|
---|
1910 | #define DEFAULT_SHELL_SHORT_NAME (bb_default_login_shell+6)
|
---|
1911 |
|
---|
1912 | /* The following devices are the same on all systems. */
|
---|
1913 | #define CURRENT_TTY "/dev/tty"
|
---|
1914 | #define DEV_CONSOLE "/dev/console"
|
---|
1915 |
|
---|
1916 | #if defined(__FreeBSD_kernel__)
|
---|
1917 | # define CURRENT_VC CURRENT_TTY
|
---|
1918 | # define VC_1 "/dev/ttyv0"
|
---|
1919 | # define VC_2 "/dev/ttyv1"
|
---|
1920 | # define VC_3 "/dev/ttyv2"
|
---|
1921 | # define VC_4 "/dev/ttyv3"
|
---|
1922 | # define VC_5 "/dev/ttyv4"
|
---|
1923 | # define VC_FORMAT "/dev/ttyv%d"
|
---|
1924 | #elif defined(__GNU__)
|
---|
1925 | # define CURRENT_VC CURRENT_TTY
|
---|
1926 | # define VC_1 "/dev/tty1"
|
---|
1927 | # define VC_2 "/dev/tty2"
|
---|
1928 | # define VC_3 "/dev/tty3"
|
---|
1929 | # define VC_4 "/dev/tty4"
|
---|
1930 | # define VC_5 "/dev/tty5"
|
---|
1931 | # define VC_FORMAT "/dev/tty%d"
|
---|
1932 | #elif ENABLE_FEATURE_DEVFS
|
---|
1933 | /*Linux, obsolete devfs names */
|
---|
1934 | # define CURRENT_VC "/dev/vc/0"
|
---|
1935 | # define VC_1 "/dev/vc/1"
|
---|
1936 | # define VC_2 "/dev/vc/2"
|
---|
1937 | # define VC_3 "/dev/vc/3"
|
---|
1938 | # define VC_4 "/dev/vc/4"
|
---|
1939 | # define VC_5 "/dev/vc/5"
|
---|
1940 | # define VC_FORMAT "/dev/vc/%d"
|
---|
1941 | # define LOOP_FORMAT "/dev/loop/%u"
|
---|
1942 | # define LOOP_NAMESIZE (sizeof("/dev/loop/") + sizeof(int)*3 + 1)
|
---|
1943 | # define LOOP_NAME "/dev/loop/"
|
---|
1944 | # define FB_0 "/dev/fb/0"
|
---|
1945 | #else
|
---|
1946 | /*Linux, normal names */
|
---|
1947 | # define CURRENT_VC "/dev/tty0"
|
---|
1948 | # define VC_1 "/dev/tty1"
|
---|
1949 | # define VC_2 "/dev/tty2"
|
---|
1950 | # define VC_3 "/dev/tty3"
|
---|
1951 | # define VC_4 "/dev/tty4"
|
---|
1952 | # define VC_5 "/dev/tty5"
|
---|
1953 | # define VC_FORMAT "/dev/tty%d"
|
---|
1954 | # define LOOP_FORMAT "/dev/loop%u"
|
---|
1955 | # define LOOP_NAMESIZE (sizeof("/dev/loop") + sizeof(int)*3 + 1)
|
---|
1956 | # define LOOP_NAME "/dev/loop"
|
---|
1957 | # define FB_0 "/dev/fb0"
|
---|
1958 | #endif
|
---|
1959 |
|
---|
1960 |
|
---|
1961 | #define ARRAY_SIZE(x) ((unsigned)(sizeof(x) / sizeof((x)[0])))
|
---|
1962 | #define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
|
---|
1963 |
|
---|
1964 |
|
---|
1965 | /* We redefine ctype macros. Unicode-correct handling of char types
|
---|
1966 | * can't be done with such byte-oriented operations anyway,
|
---|
1967 | * we don't lose anything.
|
---|
1968 | */
|
---|
1969 | #undef isalnum
|
---|
1970 | #undef isalpha
|
---|
1971 | #undef isascii
|
---|
1972 | #undef isblank
|
---|
1973 | #undef iscntrl
|
---|
1974 | #undef isdigit
|
---|
1975 | #undef isgraph
|
---|
1976 | #undef islower
|
---|
1977 | #undef isprint
|
---|
1978 | #undef ispunct
|
---|
1979 | #undef isspace
|
---|
1980 | #undef isupper
|
---|
1981 | #undef isxdigit
|
---|
1982 | #undef toupper
|
---|
1983 | #undef tolower
|
---|
1984 |
|
---|
1985 | /* We save ~500 bytes on isdigit alone.
|
---|
1986 | * BTW, x86 likes (unsigned char) cast more than (unsigned). */
|
---|
1987 |
|
---|
1988 | /* These work the same for ASCII and Unicode,
|
---|
1989 | * assuming no one asks "is this a *Unicode* letter?" using isalpha(letter) */
|
---|
1990 | #define isascii(a) ((unsigned char)(a) <= 0x7f)
|
---|
1991 | #define isdigit(a) ((unsigned char)((a) - '0') <= 9)
|
---|
1992 | #define isupper(a) ((unsigned char)((a) - 'A') <= ('Z' - 'A'))
|
---|
1993 | #define islower(a) ((unsigned char)((a) - 'a') <= ('z' - 'a'))
|
---|
1994 | #define isalpha(a) ((unsigned char)(((a)|0x20) - 'a') <= ('z' - 'a'))
|
---|
1995 | #define isblank(a) ({ unsigned char bb__isblank = (a); bb__isblank == ' ' || bb__isblank == '\t'; })
|
---|
1996 | #define iscntrl(a) ({ unsigned char bb__iscntrl = (a); bb__iscntrl < ' ' || bb__iscntrl == 0x7f; })
|
---|
1997 | /* In POSIX/C locale isspace is only these chars: "\t\n\v\f\r" and space.
|
---|
1998 | * "\t\n\v\f\r" happen to have ASCII codes 9,10,11,12,13.
|
---|
1999 | */
|
---|
2000 | #define isspace(a) ({ unsigned char bb__isspace = (a) - 9; bb__isspace == (' ' - 9) || bb__isspace <= (13 - 9); })
|
---|
2001 | // Unsafe wrt NUL: #define ispunct(a) (strchr("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~", (a)) != NULL)
|
---|
2002 | #define ispunct(a) (strchrnul("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~", (a))[0])
|
---|
2003 | // Bigger code: #define isalnum(a) ({ unsigned char bb__isalnum = (a) - '0'; bb__isalnum <= 9 || ((bb__isalnum - ('A' - '0')) & 0xdf) <= 25; })
|
---|
2004 | #define isalnum(a) bb_ascii_isalnum(a)
|
---|
2005 | static ALWAYS_INLINE int bb_ascii_isalnum(unsigned char a)
|
---|
2006 | {
|
---|
2007 | unsigned char b = a - '0';
|
---|
2008 | if (b <= 9)
|
---|
2009 | return (b <= 9);
|
---|
2010 | b = (a|0x20) - 'a';
|
---|
2011 | return b <= 'z' - 'a';
|
---|
2012 | }
|
---|
2013 | #define isxdigit(a) bb_ascii_isxdigit(a)
|
---|
2014 | static ALWAYS_INLINE int bb_ascii_isxdigit(unsigned char a)
|
---|
2015 | {
|
---|
2016 | unsigned char b = a - '0';
|
---|
2017 | if (b <= 9)
|
---|
2018 | return (b <= 9);
|
---|
2019 | b = (a|0x20) - 'a';
|
---|
2020 | return b <= 'f' - 'a';
|
---|
2021 | }
|
---|
2022 | #define toupper(a) bb_ascii_toupper(a)
|
---|
2023 | static ALWAYS_INLINE unsigned char bb_ascii_toupper(unsigned char a)
|
---|
2024 | {
|
---|
2025 | unsigned char b = a - 'a';
|
---|
2026 | if (b <= ('z' - 'a'))
|
---|
2027 | a -= 'a' - 'A';
|
---|
2028 | return a;
|
---|
2029 | }
|
---|
2030 | #define tolower(a) bb_ascii_tolower(a)
|
---|
2031 | static ALWAYS_INLINE unsigned char bb_ascii_tolower(unsigned char a)
|
---|
2032 | {
|
---|
2033 | unsigned char b = a - 'A';
|
---|
2034 | if (b <= ('Z' - 'A'))
|
---|
2035 | a += 'a' - 'A';
|
---|
2036 | return a;
|
---|
2037 | }
|
---|
2038 |
|
---|
2039 | /* In ASCII and Unicode, these are likely to be very different.
|
---|
2040 | * Let's prevent ambiguous usage from the start */
|
---|
2041 | #define isgraph(a) isgraph_is_ambiguous_dont_use(a)
|
---|
2042 | #define isprint(a) isprint_is_ambiguous_dont_use(a)
|
---|
2043 | /* NB: must not treat EOF as isgraph or isprint */
|
---|
2044 | #define isgraph_asciionly(a) ((unsigned)((a) - 0x21) <= 0x7e - 0x21)
|
---|
2045 | #define isprint_asciionly(a) ((unsigned)((a) - 0x20) <= 0x7e - 0x20)
|
---|
2046 |
|
---|
2047 |
|
---|
2048 | /* Simple unit-testing framework */
|
---|
2049 |
|
---|
2050 | typedef void (*bbunit_testfunc)(void);
|
---|
2051 |
|
---|
2052 | struct bbunit_listelem {
|
---|
2053 | const char* name;
|
---|
2054 | bbunit_testfunc testfunc;
|
---|
2055 | };
|
---|
2056 |
|
---|
2057 | void bbunit_registertest(struct bbunit_listelem* test);
|
---|
2058 | void bbunit_settestfailed(void);
|
---|
2059 |
|
---|
2060 | #define BBUNIT_DEFINE_TEST(NAME) \
|
---|
2061 | static void bbunit_##NAME##_test(void); \
|
---|
2062 | static struct bbunit_listelem bbunit_##NAME##_elem = { \
|
---|
2063 | .name = #NAME, \
|
---|
2064 | .testfunc = bbunit_##NAME##_test, \
|
---|
2065 | }; \
|
---|
2066 | static void INIT_FUNC bbunit_##NAME##_register(void) \
|
---|
2067 | { \
|
---|
2068 | bbunit_registertest(&bbunit_##NAME##_elem); \
|
---|
2069 | } \
|
---|
2070 | static void bbunit_##NAME##_test(void)
|
---|
2071 |
|
---|
2072 | /*
|
---|
2073 | * Both 'goto bbunit_end' and 'break' are here only to get rid
|
---|
2074 | * of compiler warnings.
|
---|
2075 | */
|
---|
2076 | #define BBUNIT_ENDTEST \
|
---|
2077 | do { \
|
---|
2078 | goto bbunit_end; \
|
---|
2079 | bbunit_end: \
|
---|
2080 | break; \
|
---|
2081 | } while (0)
|
---|
2082 |
|
---|
2083 | #define BBUNIT_PRINTASSERTFAIL \
|
---|
2084 | do { \
|
---|
2085 | bb_error_msg( \
|
---|
2086 | "[ERROR] Assertion failed in file %s, line %d", \
|
---|
2087 | __FILE__, __LINE__); \
|
---|
2088 | } while (0)
|
---|
2089 |
|
---|
2090 | #define BBUNIT_ASSERTION_FAILED \
|
---|
2091 | do { \
|
---|
2092 | bbunit_settestfailed(); \
|
---|
2093 | goto bbunit_end; \
|
---|
2094 | } while (0)
|
---|
2095 |
|
---|
2096 | /*
|
---|
2097 | * Assertions.
|
---|
2098 | * For now we only offer assertions which cause tests to fail
|
---|
2099 | * immediately. In the future 'expects' might be added too -
|
---|
2100 | * similar to those offered by the gtest framework.
|
---|
2101 | */
|
---|
2102 | #define BBUNIT_ASSERT_EQ(EXPECTED, ACTUAL) \
|
---|
2103 | do { \
|
---|
2104 | if ((EXPECTED) != (ACTUAL)) { \
|
---|
2105 | BBUNIT_PRINTASSERTFAIL; \
|
---|
2106 | bb_error_msg("[ERROR] '%s' isn't equal to '%s'", \
|
---|
2107 | #EXPECTED, #ACTUAL); \
|
---|
2108 | BBUNIT_ASSERTION_FAILED; \
|
---|
2109 | } \
|
---|
2110 | } while (0)
|
---|
2111 |
|
---|
2112 | #define BBUNIT_ASSERT_NOTEQ(EXPECTED, ACTUAL) \
|
---|
2113 | do { \
|
---|
2114 | if ((EXPECTED) == (ACTUAL)) { \
|
---|
2115 | BBUNIT_PRINTASSERTFAIL; \
|
---|
2116 | bb_error_msg("[ERROR] '%s' is equal to '%s'", \
|
---|
2117 | #EXPECTED, #ACTUAL); \
|
---|
2118 | BBUNIT_ASSERTION_FAILED; \
|
---|
2119 | } \
|
---|
2120 | } while (0)
|
---|
2121 |
|
---|
2122 | #define BBUNIT_ASSERT_NOTNULL(PTR) \
|
---|
2123 | do { \
|
---|
2124 | if ((PTR) == NULL) { \
|
---|
2125 | BBUNIT_PRINTASSERTFAIL; \
|
---|
2126 | bb_error_msg("[ERROR] '%s' is NULL!", #PTR); \
|
---|
2127 | BBUNIT_ASSERTION_FAILED; \
|
---|
2128 | } \
|
---|
2129 | } while (0)
|
---|
2130 |
|
---|
2131 | #define BBUNIT_ASSERT_NULL(PTR) \
|
---|
2132 | do { \
|
---|
2133 | if ((PTR) != NULL) { \
|
---|
2134 | BBUNIT_PRINTASSERTFAIL; \
|
---|
2135 | bb_error_msg("[ERROR] '%s' is not NULL!", #PTR); \
|
---|
2136 | BBUNIT_ASSERTION_FAILED; \
|
---|
2137 | } \
|
---|
2138 | } while (0)
|
---|
2139 |
|
---|
2140 | #define BBUNIT_ASSERT_FALSE(STATEMENT) \
|
---|
2141 | do { \
|
---|
2142 | if ((STATEMENT)) { \
|
---|
2143 | BBUNIT_PRINTASSERTFAIL; \
|
---|
2144 | bb_error_msg("[ERROR] Statement '%s' evaluated to true!", \
|
---|
2145 | #STATEMENT); \
|
---|
2146 | BBUNIT_ASSERTION_FAILED; \
|
---|
2147 | } \
|
---|
2148 | } while (0)
|
---|
2149 |
|
---|
2150 | #define BBUNIT_ASSERT_TRUE(STATEMENT) \
|
---|
2151 | do { \
|
---|
2152 | if (!(STATEMENT)) { \
|
---|
2153 | BBUNIT_PRINTASSERTFAIL; \
|
---|
2154 | bb_error_msg("[ERROR] Statement '%s' evaluated to false!", \
|
---|
2155 | #STATEMENT); \
|
---|
2156 | BBUNIT_ASSERTION_FAILED; \
|
---|
2157 | } \
|
---|
2158 | } while (0)
|
---|
2159 |
|
---|
2160 | #define BBUNIT_ASSERT_STREQ(STR1, STR2) \
|
---|
2161 | do { \
|
---|
2162 | if (strcmp(STR1, STR2) != 0) { \
|
---|
2163 | BBUNIT_PRINTASSERTFAIL; \
|
---|
2164 | bb_error_msg("[ERROR] Strings '%s' and '%s' " \
|
---|
2165 | "are not the same", STR1, STR2); \
|
---|
2166 | BBUNIT_ASSERTION_FAILED; \
|
---|
2167 | } \
|
---|
2168 | } while (0)
|
---|
2169 |
|
---|
2170 | #define BBUNIT_ASSERT_STRNOTEQ(STR1, STR2) \
|
---|
2171 | do { \
|
---|
2172 | if (strcmp(STR1, STR2) == 0) { \
|
---|
2173 | BBUNIT_PRINTASSERTFAIL; \
|
---|
2174 | bb_error_msg("[ERROR] Strings '%s' and '%s' " \
|
---|
2175 | "are the same, but were " \
|
---|
2176 | "expected to differ", STR1, STR2); \
|
---|
2177 | BBUNIT_ASSERTION_FAILED; \
|
---|
2178 | } \
|
---|
2179 | } while (0)
|
---|
2180 |
|
---|
2181 |
|
---|
2182 | POP_SAVED_FUNCTION_VISIBILITY
|
---|
2183 |
|
---|
2184 | #endif
|
---|