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 the GPL.
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7 | *
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8 | * Licensed under the GPL version 2, see the file LICENSE in this tarball.
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9 | */
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10 | #ifndef __LIBBUSYBOX_H__
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11 | #define __LIBBUSYBOX_H__ 1
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12 |
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13 | #include "platform.h"
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14 |
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15 | #include <ctype.h>
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16 | #include <dirent.h>
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17 | #include <errno.h>
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18 | #include <fcntl.h>
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19 | #include <inttypes.h>
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20 | #include <mntent.h>
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21 | #include <netdb.h>
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22 | #include <setjmp.h>
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23 | #include <signal.h>
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24 | #include <stdio.h>
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25 | #include <stdlib.h>
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26 | #include <stdarg.h>
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27 | #include <stddef.h>
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28 | #include <string.h>
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29 | /* #include <strings.h> - said to be obsolete */
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30 | #include <sys/ioctl.h>
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31 | #include <sys/mman.h>
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32 | #include <sys/socket.h>
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33 | #include <sys/stat.h>
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34 | #include <sys/statfs.h>
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35 | #include <sys/time.h>
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36 | #include <sys/types.h>
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37 | #include <sys/wait.h>
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38 | #include <termios.h>
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39 | #include <time.h>
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40 | #include <unistd.h>
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41 | #include <utime.h>
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42 |
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43 | #if ENABLE_SELINUX
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44 | #include <selinux/selinux.h>
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45 | #include <selinux/context.h>
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46 | #endif
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47 |
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48 | #if ENABLE_LOCALE_SUPPORT
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49 | #include <locale.h>
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50 | #else
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51 | #define setlocale(x,y) ((void)0)
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52 | #endif
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53 |
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54 | #include "pwd_.h"
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55 | #include "grp_.h"
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56 | /* ifdef it out, because it may include <shadow.h> */
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57 | /* and we may not even _have_ <shadow.h>! */
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58 | #if ENABLE_FEATURE_SHADOWPASSWDS
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59 | #include "shadow_.h"
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60 | #endif
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61 |
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62 | /* Try to pull in PATH_MAX */
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63 | #include <limits.h>
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64 | #include <sys/param.h>
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65 | #ifndef PATH_MAX
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66 | #define PATH_MAX 256
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67 | #endif
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68 |
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69 | /* Tested to work correctly (IIRC :]) */
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70 | #define MAXINT(T) (T)( \
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71 | ((T)-1) > 0 \
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72 | ? (T)-1 \
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73 | : (T)~((T)1 << (sizeof(T)*8-1)) \
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74 | )
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75 |
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76 | #define MININT(T) (T)( \
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77 | ((T)-1) > 0 \
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78 | ? (T)0 \
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79 | : ((T)1 << (sizeof(T)*8-1)) \
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80 | )
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81 |
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82 | /* Large file support */
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83 | /* Note that CONFIG_LFS forces bbox to be built with all common ops
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84 | * (stat, lseek etc) mapped to "largefile" variants by libc.
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85 | * Practically it means that open() automatically has O_LARGEFILE added
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86 | * and all filesize/file_offset parameters and struct members are "large"
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87 | * (in today's world - signed 64bit). For full support of large files,
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88 | * we need a few helper #defines (below) and careful use of off_t
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89 | * instead of int/ssize_t. No lseek64(), O_LARGEFILE etc necessary */
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90 | #if ENABLE_LFS
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91 | /* CONFIG_LFS is on */
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92 | # if ULONG_MAX > 0xffffffff
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93 | /* "long" is long enough on this system */
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94 | # define XATOOFF(a) xatoul_range(a, 0, LONG_MAX)
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95 | /* usage: sz = BB_STRTOOFF(s, NULL, 10); if (errno || sz < 0) die(); */
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96 | # define BB_STRTOOFF bb_strtoul
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97 | # define STRTOOFF strtoul
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98 | /* usage: printf("size: %"OFF_FMT"d (%"OFF_FMT"x)\n", sz, sz); */
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99 | # define OFF_FMT "l"
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100 | # else
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101 | /* "long" is too short, need "long long" */
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102 | # define XATOOFF(a) xatoull_range(a, 0, LLONG_MAX)
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103 | # define BB_STRTOOFF bb_strtoull
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104 | # define STRTOOFF strtoull
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105 | # define OFF_FMT "ll"
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106 | # endif
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107 | #else
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108 | /* CONFIG_LFS is off */
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109 | # if UINT_MAX == 0xffffffff
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110 | /* While sizeof(off_t) == sizeof(int), off_t is typedef'ed to long anyway.
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111 | * gcc will throw warnings on printf("%d", off_t). Crap... */
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112 | # define XATOOFF(a) xatoi_u(a)
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113 | # define BB_STRTOOFF bb_strtou
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114 | # define STRTOOFF strtol
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115 | # define OFF_FMT "l"
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116 | # else
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117 | # define XATOOFF(a) xatoul_range(a, 0, LONG_MAX)
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118 | # define BB_STRTOOFF bb_strtoul
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119 | # define STRTOOFF strtol
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120 | # define OFF_FMT "l"
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121 | # endif
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122 | #endif
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123 | /* scary. better ideas? (but do *test* them first!) */
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124 | #define OFF_T_MAX ((off_t)~((off_t)1 << (sizeof(off_t)*8-1)))
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125 |
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126 | /* Some useful definitions */
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127 | #undef FALSE
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128 | #define FALSE ((int) 0)
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129 | #undef TRUE
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130 | #define TRUE ((int) 1)
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131 | #undef SKIP
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132 | #define SKIP ((int) 2)
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133 |
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134 | /* for mtab.c */
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135 | #define MTAB_GETMOUNTPT '1'
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136 | #define MTAB_GETDEVICE '2'
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137 |
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138 | #define BUF_SIZE 8192
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139 | #define EXPAND_ALLOC 1024
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140 |
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141 | /* Macros for min/max. */
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142 | #ifndef MIN
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143 | #define MIN(a,b) (((a)<(b))?(a):(b))
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144 | #endif
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145 |
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146 | #ifndef MAX
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147 | #define MAX(a,b) (((a)>(b))?(a):(b))
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148 | #endif
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149 |
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150 | /* buffer allocation schemes */
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151 | #if ENABLE_FEATURE_BUFFERS_GO_ON_STACK
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152 | #define RESERVE_CONFIG_BUFFER(buffer,len) char buffer[len]
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153 | #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char buffer[len]
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154 | #define RELEASE_CONFIG_BUFFER(buffer) ((void)0)
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155 | #else
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156 | #if ENABLE_FEATURE_BUFFERS_GO_IN_BSS
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157 | #define RESERVE_CONFIG_BUFFER(buffer,len) static char buffer[len]
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158 | #define RESERVE_CONFIG_UBUFFER(buffer,len) static unsigned char buffer[len]
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159 | #define RELEASE_CONFIG_BUFFER(buffer) ((void)0)
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160 | #else
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161 | #define RESERVE_CONFIG_BUFFER(buffer,len) char *buffer = xmalloc(len)
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162 | #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char *buffer = xmalloc(len)
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163 | #define RELEASE_CONFIG_BUFFER(buffer) free(buffer)
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164 | #endif
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165 | #endif
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166 |
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167 |
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168 | #if defined(__GLIBC__)
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169 | /* glibc uses __errno_location() to get a ptr to errno */
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170 | /* We can just memorize it once - no multithreading in busybox :) */
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171 | extern int *const bb_errno;
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172 | #undef errno
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173 | #define errno (*bb_errno)
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174 | #endif
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175 |
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176 | #if defined(__GLIBC__) && __GLIBC__ < 2
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177 | int vdprintf(int d, const char *format, va_list ap);
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178 | #endif
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179 | // This is declared here rather than #including <libgen.h> in order to avoid
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180 | // confusing the two versions of basename. See the dirname/basename man page
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181 | // for details.
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182 | char *dirname(char *path);
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183 | /* Include our own copy of struct sysinfo to avoid binary compatibility
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184 | * problems with Linux 2.4, which changed things. Grumble, grumble. */
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185 | struct sysinfo {
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186 | long uptime; /* Seconds since boot */
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187 | unsigned long loads[3]; /* 1, 5, and 15 minute load averages */
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188 | unsigned long totalram; /* Total usable main memory size */
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189 | unsigned long freeram; /* Available memory size */
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190 | unsigned long sharedram; /* Amount of shared memory */
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191 | unsigned long bufferram; /* Memory used by buffers */
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192 | unsigned long totalswap; /* Total swap space size */
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193 | unsigned long freeswap; /* swap space still available */
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194 | unsigned short procs; /* Number of current processes */
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195 | unsigned short pad; /* Padding needed for m68k */
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196 | unsigned long totalhigh; /* Total high memory size */
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197 | unsigned long freehigh; /* Available high memory size */
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198 | unsigned int mem_unit; /* Memory unit size in bytes */
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199 | char _f[20-2*sizeof(long)-sizeof(int)]; /* Padding: libc5 uses this.. */
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200 | };
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201 | int sysinfo(struct sysinfo* info);
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202 |
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203 | unsigned long long monotonic_us(void);
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204 | unsigned monotonic_sec(void);
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205 |
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206 | extern void chomp(char *s);
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207 | extern void trim(char *s);
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208 | extern char *skip_whitespace(const char *);
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209 | extern char *skip_non_whitespace(const char *);
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210 |
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211 | //TODO: supply a pointer to char[11] buffer (avoid statics)?
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212 | extern const char *bb_mode_string(mode_t mode);
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213 | extern int is_directory(const char *name, int followLinks, struct stat *statBuf);
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214 | extern int remove_file(const char *path, int flags);
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215 | extern int copy_file(const char *source, const char *dest, int flags);
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216 | enum {
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217 | ACTION_RECURSE = (1 << 0),
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218 | ACTION_FOLLOWLINKS = (1 << 1),
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219 | ACTION_FOLLOWLINKS_L0 = (1 << 2),
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220 | ACTION_DEPTHFIRST = (1 << 3),
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221 | /*ACTION_REVERSE = (1 << 4), - unused */
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222 | };
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223 | extern int recursive_action(const char *fileName, unsigned flags,
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224 | int (*fileAction) (const char *fileName, struct stat* statbuf, void* userData, int depth),
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225 | int (*dirAction) (const char *fileName, struct stat* statbuf, void* userData, int depth),
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226 | void* userData, unsigned depth);
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227 | extern int device_open(const char *device, int mode);
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228 | extern int get_console_fd(void);
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229 | extern char *find_block_device(const char *path);
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230 | /* bb_copyfd_XX print read/write errors and return -1 if they occur */
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231 | extern off_t bb_copyfd_eof(int fd1, int fd2);
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232 | extern off_t bb_copyfd_size(int fd1, int fd2, off_t size);
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233 | extern void bb_copyfd_exact_size(int fd1, int fd2, off_t size);
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234 | /* "short" copy can be detected by return value < size */
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235 | /* this helper yells "short read!" if param is not -1 */
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236 | extern void complain_copyfd_and_die(off_t sz) ATTRIBUTE_NORETURN;
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237 | extern char bb_process_escape_sequence(const char **ptr);
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238 | /* TODO: sometimes modifies its parameter, which
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239 | * makes it rather inconvenient at times: */
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240 | extern char *bb_get_last_path_component(char *path);
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241 |
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242 | int ndelay_on(int fd);
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243 | int ndelay_off(int fd);
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244 | void xdup2(int, int);
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245 | void xmove_fd(int, int);
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246 |
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247 |
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248 | DIR *xopendir(const char *path);
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249 | DIR *warn_opendir(const char *path);
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250 |
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251 | /* UNUSED: char *xmalloc_realpath(const char *path); */
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252 | char *xmalloc_readlink(const char *path);
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253 | char *xmalloc_readlink_or_warn(const char *path);
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254 | char *xrealloc_getcwd_or_warn(char *cwd);
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255 |
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256 |
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257 | //TODO: signal(sid, f) is the same? then why?
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258 | extern void sig_catch(int,void (*)(int));
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259 | //#define sig_ignore(s) (sig_catch((s), SIG_IGN))
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260 | //#define sig_uncatch(s) (sig_catch((s), SIG_DFL))
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261 | extern void sig_block(int);
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262 | extern void sig_unblock(int);
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263 | /* UNUSED: extern void sig_blocknone(void); */
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264 | extern void sig_pause(void);
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265 |
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266 |
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267 | void xsetgid(gid_t gid);
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268 | void xsetuid(uid_t uid);
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269 | void xchdir(const char *path);
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270 | void xsetenv(const char *key, const char *value);
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271 | void xunlink(const char *pathname);
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272 | void xstat(const char *pathname, struct stat *buf);
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273 | int xopen(const char *pathname, int flags);
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274 | int xopen3(const char *pathname, int flags, int mode);
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275 | int open_or_warn(const char *pathname, int flags);
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276 | int open3_or_warn(const char *pathname, int flags, int mode);
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277 | void xpipe(int filedes[2]);
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278 | off_t xlseek(int fd, off_t offset, int whence);
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279 | off_t fdlength(int fd);
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280 |
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281 | int xsocket(int domain, int type, int protocol);
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282 | void xbind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen);
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283 | void xlisten(int s, int backlog);
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284 | void xconnect(int s, const struct sockaddr *s_addr, socklen_t addrlen);
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285 | ssize_t xsendto(int s, const void *buf, size_t len, const struct sockaddr *to,
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286 | socklen_t tolen);
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287 | /* SO_REUSEADDR allows a server to rebind to an address that is already
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288 | * "in use" by old connections to e.g. previous server instance which is
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289 | * killed or crashed. Without it bind will fail until all such connections
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290 | * time out. Linux does not allow multiple live binds on same ip:port
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291 | * regardless of SO_REUSEADDR (unlike some other flavors of Unix).
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292 | * Turn it on before you call bind(). */
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293 | void setsockopt_reuseaddr(int fd); /* On Linux this never fails. */
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294 | int setsockopt_broadcast(int fd);
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295 | /* NB: returns port in host byte order */
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296 | unsigned bb_lookup_port(const char *port, const char *protocol, unsigned default_port);
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297 | typedef struct len_and_sockaddr {
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298 | socklen_t len;
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299 | union {
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300 | struct sockaddr sa;
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301 | struct sockaddr_in sin;
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302 | #if ENABLE_FEATURE_IPV6
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303 | struct sockaddr_in6 sin6;
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304 | #endif
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305 | };
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306 | } len_and_sockaddr;
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307 | enum {
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308 | LSA_SIZEOF_SA = sizeof(
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309 | union {
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310 | struct sockaddr sa;
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311 | struct sockaddr_in sin;
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312 | #if ENABLE_FEATURE_IPV6
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313 | struct sockaddr_in6 sin6;
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314 | #endif
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315 | }
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316 | )
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317 | };
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318 | /* Create stream socket, and allocate suitable lsa.
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319 | * (lsa of correct size and lsa->sa.sa_family (AF_INET/AF_INET6))
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320 | * af == AF_UNSPEC will result in trying to create IPv6 socket,
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321 | * and if kernel doesn't support it, IPv4.
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322 | */
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323 | int xsocket_type(len_and_sockaddr **lsap, USE_FEATURE_IPV6(int af,) int sock_type);
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324 | int xsocket_stream(len_and_sockaddr **lsap);
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325 | /* Create server socket bound to bindaddr:port. bindaddr can be NULL,
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326 | * numeric IP ("N.N.N.N") or numeric IPv6 address,
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327 | * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT").
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328 | * Only if there is no suffix, port argument is used */
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329 | /* NB: these set SO_REUSEADDR before bind */
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330 | int create_and_bind_stream_or_die(const char *bindaddr, int port);
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331 | int create_and_bind_dgram_or_die(const char *bindaddr, int port);
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332 | /* Create client TCP socket connected to peer:port. Peer cannot be NULL.
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333 | * Peer can be numeric IP ("N.N.N.N"), numeric IPv6 address or hostname,
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334 | * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT").
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335 | * If there is no suffix, port argument is used */
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336 | int create_and_connect_stream_or_die(const char *peer, int port);
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337 | /* Connect to peer identified by lsa */
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338 | int xconnect_stream(const len_and_sockaddr *lsa);
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339 | /* Return malloc'ed len_and_sockaddr with socket address of host:port
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340 | * Currently will return IPv4 or IPv6 sockaddrs only
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341 | * (depending on host), but in theory nothing prevents e.g.
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342 | * UNIX socket address being returned, IPX sockaddr etc...
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343 | * On error does bb_error_msg and returns NULL */
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344 | len_and_sockaddr* host2sockaddr(const char *host, int port);
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345 | /* Version which dies on error */
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346 | len_and_sockaddr* xhost2sockaddr(const char *host, int port);
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347 | len_and_sockaddr* xdotted2sockaddr(const char *host, int port);
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348 | #if ENABLE_FEATURE_IPV6
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349 | /* Same, useful if you want to force family (e.g. IPv6) */
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350 | len_and_sockaddr* host_and_af2sockaddr(const char *host, int port, sa_family_t af);
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351 | len_and_sockaddr* xhost_and_af2sockaddr(const char *host, int port, sa_family_t af);
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352 | #else
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353 | /* [we evaluate af: think about "host_and_af2sockaddr(..., af++)"] */
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354 | #define host_and_af2sockaddr(host, port, af) ((void)(af), host2sockaddr((host), (port)))
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355 | #define xhost_and_af2sockaddr(host, port, af) ((void)(af), xhost2sockaddr((host), (port)))
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356 | #endif
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357 | /* Assign sin[6]_port member if the socket is an AF_INET[6] one,
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358 | * otherwise no-op. Useful for ftp.
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359 | * NB: does NOT do htons() internally, just direct assignment. */
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360 | void set_nport(len_and_sockaddr *lsa, unsigned port);
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361 | /* Retrieve sin[6]_port or return -1 for non-INET[6] lsa's */
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362 | int get_nport(const struct sockaddr *sa);
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363 | /* Reverse DNS. Returns NULL on failure. */
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364 | char* xmalloc_sockaddr2host(const struct sockaddr *sa);
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365 | /* This one doesn't append :PORTNUM */
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366 | char* xmalloc_sockaddr2host_noport(const struct sockaddr *sa);
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367 | /* This one also doesn't fall back to dotted IP (returns NULL) */
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368 | char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa);
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369 | /* inet_[ap]ton on steroids */
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370 | char* xmalloc_sockaddr2dotted(const struct sockaddr *sa);
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371 | char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa);
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372 | // "old" (ipv4 only) API
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373 | // users: traceroute.c hostname.c - use _list_ of all IPs
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374 | struct hostent *xgethostbyname(const char *name);
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375 | // Also mount.c and inetd.c are using gethostbyname(),
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376 | // + inet_common.c has additional IPv4-only stuff
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377 |
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378 |
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379 | void socket_want_pktinfo(int fd);
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380 | ssize_t send_to_from(int fd, void *buf, size_t len, int flags,
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381 | const struct sockaddr *from, const struct sockaddr *to,
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382 | socklen_t tolen);
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383 | ssize_t recv_from_to(int fd, void *buf, size_t len, int flags,
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384 | struct sockaddr *from, struct sockaddr *to,
|
---|
385 | socklen_t sa_size);
|
---|
386 |
|
---|
387 |
|
---|
388 | extern char *xstrdup(const char *s);
|
---|
389 | extern char *xstrndup(const char *s, int n);
|
---|
390 | extern char *safe_strncpy(char *dst, const char *src, size_t size);
|
---|
391 | extern char *xasprintf(const char *format, ...) __attribute__ ((format (printf, 1, 2)));
|
---|
392 | // gcc-4.1.1 still isn't good enough at optimizing it
|
---|
393 | // (+200 bytes compared to macro)
|
---|
394 | //static ALWAYS_INLINE
|
---|
395 | //int LONE_DASH(const char *s) { return s[0] == '-' && !s[1]; }
|
---|
396 | //static ALWAYS_INLINE
|
---|
397 | //int NOT_LONE_DASH(const char *s) { return s[0] != '-' || s[1]; }
|
---|
398 | #define LONE_DASH(s) ((s)[0] == '-' && !(s)[1])
|
---|
399 | #define NOT_LONE_DASH(s) ((s)[0] != '-' || (s)[1])
|
---|
400 | #define LONE_CHAR(s,c) ((s)[0] == (c) && !(s)[1])
|
---|
401 | #define NOT_LONE_CHAR(s,c) ((s)[0] != (c) || (s)[1])
|
---|
402 | #define DOT_OR_DOTDOT(s) ((s)[0] == '.' && (!(s)[1] || ((s)[1] == '.' && !(s)[2])))
|
---|
403 |
|
---|
404 | /* dmalloc will redefine these to it's own implementation. It is safe
|
---|
405 | * to have the prototypes here unconditionally. */
|
---|
406 | extern void *malloc_or_warn(size_t size);
|
---|
407 | extern void *xmalloc(size_t size);
|
---|
408 | extern void *xzalloc(size_t size);
|
---|
409 | extern void *xrealloc(void *old, size_t size);
|
---|
410 |
|
---|
411 | extern ssize_t safe_read(int fd, void *buf, size_t count);
|
---|
412 | extern ssize_t full_read(int fd, void *buf, size_t count);
|
---|
413 | extern void xread(int fd, void *buf, size_t count);
|
---|
414 | extern unsigned char xread_char(int fd);
|
---|
415 | // Read one line a-la fgets. Uses one read(), works only on seekable streams
|
---|
416 | extern char *reads(int fd, char *buf, size_t count);
|
---|
417 | // Read one line a-la fgets. Reads byte-by-byte.
|
---|
418 | // Useful when it is important to not read ahead.
|
---|
419 | extern char *xmalloc_reads(int fd, char *pfx);
|
---|
420 | extern ssize_t read_close(int fd, void *buf, size_t count);
|
---|
421 | extern ssize_t open_read_close(const char *filename, void *buf, size_t count);
|
---|
422 | extern void *xmalloc_open_read_close(const char *filename, size_t *sizep);
|
---|
423 |
|
---|
424 | extern ssize_t safe_write(int fd, const void *buf, size_t count);
|
---|
425 | extern ssize_t full_write(int fd, const void *buf, size_t count);
|
---|
426 | extern void xwrite(int fd, const void *buf, size_t count);
|
---|
427 |
|
---|
428 | /* Reads and prints to stdout till eof, then closes FILE. Exits on error: */
|
---|
429 | extern void xprint_and_close_file(FILE *file);
|
---|
430 | extern char *xmalloc_fgets(FILE *file);
|
---|
431 | /* Read up to (and including) TERMINATING_STRING: */
|
---|
432 | extern char *xmalloc_fgets_str(FILE *file, const char *terminating_string);
|
---|
433 | /* Chops off '\n' from the end, unlike fgets: */
|
---|
434 | extern char *xmalloc_getline(FILE *file);
|
---|
435 | extern char *bb_get_chunk_from_file(FILE *file, int *end);
|
---|
436 | extern void die_if_ferror(FILE *file, const char *msg);
|
---|
437 | extern void die_if_ferror_stdout(void);
|
---|
438 | extern void xfflush_stdout(void);
|
---|
439 | extern void fflush_stdout_and_exit(int retval) ATTRIBUTE_NORETURN;
|
---|
440 | extern int fclose_if_not_stdin(FILE *file);
|
---|
441 | extern FILE *xfopen(const char *filename, const char *mode);
|
---|
442 | /* Prints warning to stderr and returns NULL on failure: */
|
---|
443 | extern FILE *fopen_or_warn(const char *filename, const char *mode);
|
---|
444 | /* "Opens" stdin if filename is special, else just opens file: */
|
---|
445 | extern FILE *fopen_or_warn_stdin(const char *filename);
|
---|
446 |
|
---|
447 | /* Convert each alpha char in str to lower-case */
|
---|
448 | extern char* str_tolower(char *str);
|
---|
449 |
|
---|
450 | char *utoa(unsigned n);
|
---|
451 | char *itoa(int n);
|
---|
452 | /* Returns a pointer past the formatted number, does NOT null-terminate */
|
---|
453 | char *utoa_to_buf(unsigned n, char *buf, unsigned buflen);
|
---|
454 | char *itoa_to_buf(int n, char *buf, unsigned buflen);
|
---|
455 | void smart_ulltoa5(unsigned long long ul, char buf[5]);
|
---|
456 | //TODO: provide pointer to buf (avoid statics)?
|
---|
457 | const char *make_human_readable_str(unsigned long long size,
|
---|
458 | unsigned long block_size, unsigned long display_unit);
|
---|
459 | /* Put a string of hex bytes ("1b2e66fe"...), return advanced pointer */
|
---|
460 | char *bin2hex(char *buf, const char *cp, int count);
|
---|
461 |
|
---|
462 | /* Last element is marked by mult == 0 */
|
---|
463 | struct suffix_mult {
|
---|
464 | char suffix[4];
|
---|
465 | unsigned mult;
|
---|
466 | };
|
---|
467 | #include "xatonum.h"
|
---|
468 | /* Specialized: */
|
---|
469 | /* Using xatoi() instead of naive atoi() is not always convenient -
|
---|
470 | * in many places people want *non-negative* values, but store them
|
---|
471 | * in signed int. Therefore we need this one:
|
---|
472 | * dies if input is not in [0, INT_MAX] range. Also will reject '-0' etc */
|
---|
473 | int xatoi_u(const char *numstr);
|
---|
474 | /* Useful for reading port numbers */
|
---|
475 | uint16_t xatou16(const char *numstr);
|
---|
476 |
|
---|
477 |
|
---|
478 | /* These parse entries in /etc/passwd and /etc/group. This is desirable
|
---|
479 | * for BusyBox since we want to avoid using the glibc NSS stuff, which
|
---|
480 | * increases target size and is often not needed on embedded systems. */
|
---|
481 | long xuname2uid(const char *name);
|
---|
482 | long xgroup2gid(const char *name);
|
---|
483 | /* wrapper: allows string to contain numeric uid or gid */
|
---|
484 | unsigned long get_ug_id(const char *s, long (*xname2id)(const char *));
|
---|
485 | /* from chpst. Does not die, returns 0 on failure */
|
---|
486 | struct bb_uidgid_t {
|
---|
487 | uid_t uid;
|
---|
488 | gid_t gid;
|
---|
489 | };
|
---|
490 | /* always sets uid and gid */
|
---|
491 | int get_uidgid(struct bb_uidgid_t*, const char*, int numeric_ok);
|
---|
492 | /* chown-like handling of "user[:[group]" */
|
---|
493 | void parse_chown_usergroup_or_die(struct bb_uidgid_t *u, char *user_group);
|
---|
494 | /* bb_getpwuid, bb_getgrgid:
|
---|
495 | * bb_getXXXid(buf, bufsz, id) - copy user/group name or id
|
---|
496 | * as a string to buf, return user/group name or NULL
|
---|
497 | * bb_getXXXid(NULL, 0, id) - return user/group name or NULL
|
---|
498 | * bb_getXXXid(NULL, -1, id) - return user/group name or exit
|
---|
499 | */
|
---|
500 | char *bb_getpwuid(char *name, int bufsize, long uid);
|
---|
501 | char *bb_getgrgid(char *group, int bufsize, long gid);
|
---|
502 | /* versions which cache results (useful for ps, ls etc) */
|
---|
503 | const char* get_cached_username(uid_t uid);
|
---|
504 | const char* get_cached_groupname(gid_t gid);
|
---|
505 | void clear_username_cache(void);
|
---|
506 | /* internally usernames are saved in fixed-sized char[] buffers */
|
---|
507 | enum { USERNAME_MAX_SIZE = 16 - sizeof(int) };
|
---|
508 |
|
---|
509 |
|
---|
510 | struct bb_applet;
|
---|
511 | int execable_file(const char *name);
|
---|
512 | char *find_execable(const char *filename);
|
---|
513 | int exists_execable(const char *filename);
|
---|
514 |
|
---|
515 | #if ENABLE_FEATURE_PREFER_APPLETS
|
---|
516 | int bb_execvp(const char *file, char *const argv[]);
|
---|
517 | #define BB_EXECVP(prog,cmd) bb_execvp(prog,cmd)
|
---|
518 | #define BB_EXECLP(prog,cmd,...) \
|
---|
519 | execlp((find_applet_by_name(prog)) ? CONFIG_BUSYBOX_EXEC_PATH : prog, \
|
---|
520 | cmd, __VA_ARGS__)
|
---|
521 | #else
|
---|
522 | #define BB_EXECVP(prog,cmd) execvp(prog,cmd)
|
---|
523 | #define BB_EXECLP(prog,cmd,...) execlp(prog,cmd, __VA_ARGS__)
|
---|
524 | #endif
|
---|
525 |
|
---|
526 | /* NOMMU friendy fork+exec */
|
---|
527 | pid_t spawn(char **argv);
|
---|
528 | pid_t xspawn(char **argv);
|
---|
529 |
|
---|
530 | /* Unlike waitpid, waits ONLY for one process,
|
---|
531 | * It's safe to pass negative 'pids' from failed [v]fork -
|
---|
532 | * wait4pid will return -1 (and will not clobber [v]fork's errno).
|
---|
533 | * IOW: rc = wait4pid(spawn(argv));
|
---|
534 | * if (rc < 0) bb_perror_msg("%s", argv[0]);
|
---|
535 | * if (rc > 0) bb_error_msg("exit code: %d", rc);
|
---|
536 | */
|
---|
537 | int wait4pid(int pid);
|
---|
538 | int wait_pid(int *wstat, int pid);
|
---|
539 | int wait_nohang(int *wstat);
|
---|
540 | #define wait_crashed(w) ((w) & 127)
|
---|
541 | #define wait_exitcode(w) ((w) >> 8)
|
---|
542 | #define wait_stopsig(w) ((w) >> 8)
|
---|
543 | #define wait_stopped(w) (((w) & 127) == 127)
|
---|
544 | /* wait4pid(spawn(argv)) + NOFORK/NOEXEC (if configured) */
|
---|
545 | int spawn_and_wait(char **argv);
|
---|
546 | struct nofork_save_area {
|
---|
547 | jmp_buf die_jmp;
|
---|
548 | const struct bb_applet *current_applet;
|
---|
549 | int xfunc_error_retval;
|
---|
550 | uint32_t option_mask32;
|
---|
551 | int die_sleep;
|
---|
552 | smallint saved;
|
---|
553 | };
|
---|
554 | void save_nofork_data(struct nofork_save_area *save);
|
---|
555 | void restore_nofork_data(struct nofork_save_area *save);
|
---|
556 | /* Does NOT check that applet is NOFORK, just blindly runs it */
|
---|
557 | int run_nofork_applet(const struct bb_applet *a, char **argv);
|
---|
558 | int run_nofork_applet_prime(struct nofork_save_area *old, const struct bb_applet *a, char **argv);
|
---|
559 |
|
---|
560 | /* Helpers for daemonization.
|
---|
561 | *
|
---|
562 | * bb_daemonize(flags) = daemonize, does not compile on NOMMU
|
---|
563 | *
|
---|
564 | * bb_daemonize_or_rexec(flags, argv) = daemonizes on MMU (and ignores argv),
|
---|
565 | * rexec's itself on NOMMU with argv passed as command line.
|
---|
566 | * Thus bb_daemonize_or_rexec may cause your <applet>_main() to be re-executed
|
---|
567 | * from the start. (It will detect it and not reexec again second time).
|
---|
568 | * You have to audit carefully that you don't do something twice as a result
|
---|
569 | * (opening files/sockets, parsing config files etc...)!
|
---|
570 | *
|
---|
571 | * Both of the above will redirect fd 0,1,2 to /dev/null and drop ctty
|
---|
572 | * (will do setsid()).
|
---|
573 | *
|
---|
574 | * forkexit_or_rexec(argv) = bare-bones "fork + parent exits" on MMU,
|
---|
575 | * "vfork + re-exec ourself" on NOMMU. No fd redirection, no setsid().
|
---|
576 | * Currently used for openvt. On MMU ignores argv.
|
---|
577 | *
|
---|
578 | * Helper for network daemons in foreground mode:
|
---|
579 | *
|
---|
580 | * bb_sanitize_stdio() = make sure that fd 0,1,2 are opened by opening them
|
---|
581 | * to /dev/null if they are not.
|
---|
582 | */
|
---|
583 | enum {
|
---|
584 | DAEMON_CHDIR_ROOT = 1,
|
---|
585 | DAEMON_DEVNULL_STDIO = 2,
|
---|
586 | DAEMON_CLOSE_EXTRA_FDS = 4,
|
---|
587 | DAEMON_ONLY_SANITIZE = 8, /* internal use */
|
---|
588 | };
|
---|
589 | #if BB_MMU
|
---|
590 | void forkexit_or_rexec(void);
|
---|
591 | enum { re_execed = 0 };
|
---|
592 | # define forkexit_or_rexec(argv) forkexit_or_rexec()
|
---|
593 | # define bb_daemonize_or_rexec(flags, argv) bb_daemonize_or_rexec(flags)
|
---|
594 | # define bb_daemonize(flags) bb_daemonize_or_rexec(flags, bogus)
|
---|
595 | #else
|
---|
596 | void re_exec(char **argv) ATTRIBUTE_NORETURN;
|
---|
597 | void forkexit_or_rexec(char **argv);
|
---|
598 | extern bool re_execed;
|
---|
599 | # define fork() BUG_fork_is_unavailable_on_nommu()
|
---|
600 | # define daemon(a,b) BUG_daemon_is_unavailable_on_nommu()
|
---|
601 | # define bb_daemonize(a) BUG_bb_daemonize_is_unavailable_on_nommu()
|
---|
602 | #endif
|
---|
603 | void bb_daemonize_or_rexec(int flags, char **argv);
|
---|
604 | void bb_sanitize_stdio(void);
|
---|
605 |
|
---|
606 |
|
---|
607 | extern const char *opt_complementary;
|
---|
608 | #if ENABLE_GETOPT_LONG
|
---|
609 | #define No_argument "\0"
|
---|
610 | #define Required_argument "\001"
|
---|
611 | #define Optional_argument "\002"
|
---|
612 | extern const char *applet_long_options;
|
---|
613 | #endif
|
---|
614 | extern uint32_t option_mask32;
|
---|
615 | extern uint32_t getopt32(char **argv, const char *applet_opts, ...);
|
---|
616 |
|
---|
617 |
|
---|
618 | typedef struct llist_t {
|
---|
619 | char *data;
|
---|
620 | struct llist_t *link;
|
---|
621 | } llist_t;
|
---|
622 | void llist_add_to(llist_t **old_head, void *data);
|
---|
623 | void llist_add_to_end(llist_t **list_head, void *data);
|
---|
624 | void *llist_pop(llist_t **elm);
|
---|
625 | void llist_unlink(llist_t **head, llist_t *elm);
|
---|
626 | void llist_free(llist_t *elm, void (*freeit)(void *data));
|
---|
627 | llist_t *llist_rev(llist_t *list);
|
---|
628 | /* BTW, surprisingly, changing API to
|
---|
629 | * llist_t *llist_add_to(llist_t *old_head, void *data)
|
---|
630 | * etc does not result in smaller code... */
|
---|
631 |
|
---|
632 | /* start_stop_daemon and udhcpc are special - they want
|
---|
633 | * to create pidfiles regardless of FEATURE_PIDFILE */
|
---|
634 | #if ENABLE_FEATURE_PIDFILE || defined(WANT_PIDFILE)
|
---|
635 | /* True only if we created pidfile which is *file*, not /dev/null etc */
|
---|
636 | extern smallint wrote_pidfile;
|
---|
637 | void write_pidfile(const char *path);
|
---|
638 | #define remove_pidfile(path) do { if (wrote_pidfile) unlink(path); } while (0)
|
---|
639 | #else
|
---|
640 | enum { wrote_pidfile = 0 };
|
---|
641 | #define write_pidfile(path) ((void)0)
|
---|
642 | #define remove_pidfile(path) ((void)0)
|
---|
643 | #endif
|
---|
644 |
|
---|
645 | enum {
|
---|
646 | LOGMODE_NONE = 0,
|
---|
647 | LOGMODE_STDIO = (1 << 0),
|
---|
648 | LOGMODE_SYSLOG = (1 << 1) * ENABLE_FEATURE_SYSLOG,
|
---|
649 | LOGMODE_BOTH = LOGMODE_SYSLOG + LOGMODE_STDIO,
|
---|
650 | };
|
---|
651 | extern const char *msg_eol;
|
---|
652 | extern smallint logmode;
|
---|
653 | extern int die_sleep;
|
---|
654 | extern int xfunc_error_retval;
|
---|
655 | extern jmp_buf die_jmp;
|
---|
656 | extern void xfunc_die(void) ATTRIBUTE_NORETURN;
|
---|
657 | extern void bb_show_usage(void) ATTRIBUTE_NORETURN ATTRIBUTE_EXTERNALLY_VISIBLE;
|
---|
658 | extern void bb_error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
|
---|
659 | extern void bb_error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
|
---|
660 | extern void bb_perror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
|
---|
661 | extern void bb_perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
|
---|
662 | extern void bb_herror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
|
---|
663 | extern void bb_herror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
|
---|
664 | extern void bb_perror_nomsg_and_die(void) ATTRIBUTE_NORETURN;
|
---|
665 | extern void bb_perror_nomsg(void);
|
---|
666 | extern void bb_info_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
|
---|
667 | extern void bb_verror_msg(const char *s, va_list p, const char *strerr);
|
---|
668 |
|
---|
669 |
|
---|
670 | /* applets which are useful from another applets */
|
---|
671 | int bb_cat(char** argv);
|
---|
672 | int bb_echo(char** argv);
|
---|
673 | int test_main(int argc, char** argv);
|
---|
674 | int kill_main(int argc, char **argv);
|
---|
675 | #if ENABLE_ROUTE
|
---|
676 | void bb_displayroutes(int noresolve, int netstatfmt);
|
---|
677 | #endif
|
---|
678 | int chown_main(int argc, char **argv);
|
---|
679 | #if ENABLE_GUNZIP
|
---|
680 | int gunzip_main(int argc, char **argv);
|
---|
681 | #endif
|
---|
682 | int bbunpack(char **argv,
|
---|
683 | char* (*make_new_name)(char *filename),
|
---|
684 | USE_DESKTOP(long long) int (*unpacker)(void)
|
---|
685 | );
|
---|
686 |
|
---|
687 |
|
---|
688 | /* Networking */
|
---|
689 | int create_icmp_socket(void);
|
---|
690 | int create_icmp6_socket(void);
|
---|
691 | /* interface.c */
|
---|
692 | /* This structure defines protocol families and their handlers. */
|
---|
693 | struct aftype {
|
---|
694 | const char *name;
|
---|
695 | const char *title;
|
---|
696 | int af;
|
---|
697 | int alen;
|
---|
698 | char *(*print) (unsigned char *);
|
---|
699 | const char *(*sprint) (struct sockaddr *, int numeric);
|
---|
700 | int (*input) (/*int type,*/ const char *bufp, struct sockaddr *);
|
---|
701 | void (*herror) (char *text);
|
---|
702 | int (*rprint) (int options);
|
---|
703 | int (*rinput) (int typ, int ext, char **argv);
|
---|
704 |
|
---|
705 | /* may modify src */
|
---|
706 | int (*getmask) (char *src, struct sockaddr * mask, char *name);
|
---|
707 | };
|
---|
708 | /* This structure defines hardware protocols and their handlers. */
|
---|
709 | struct hwtype {
|
---|
710 | const char *name;
|
---|
711 | const char *title;
|
---|
712 | int type;
|
---|
713 | int alen;
|
---|
714 | char *(*print) (unsigned char *);
|
---|
715 | int (*input) (const char *, struct sockaddr *);
|
---|
716 | int (*activate) (int fd);
|
---|
717 | int suppress_null_addr;
|
---|
718 | };
|
---|
719 | extern smallint interface_opt_a;
|
---|
720 | int display_interfaces(char *ifname);
|
---|
721 | const struct aftype *get_aftype(const char *name);
|
---|
722 | const struct hwtype *get_hwtype(const char *name);
|
---|
723 | const struct hwtype *get_hwntype(int type);
|
---|
724 |
|
---|
725 |
|
---|
726 | #ifndef BUILD_INDIVIDUAL
|
---|
727 | extern const struct bb_applet *find_applet_by_name(const char *name);
|
---|
728 | /* Returns only if applet is not found. */
|
---|
729 | extern void run_applet_and_exit(const char *name, char **argv);
|
---|
730 | extern void run_current_applet_and_exit(char **argv) ATTRIBUTE_NORETURN;
|
---|
731 | #endif
|
---|
732 |
|
---|
733 | extern int match_fstype(const struct mntent *mt, const char *fstypes);
|
---|
734 | extern struct mntent *find_mount_point(const char *name, const char *table);
|
---|
735 | extern void erase_mtab(const char * name);
|
---|
736 | extern unsigned int tty_baud_to_value(speed_t speed);
|
---|
737 | extern speed_t tty_value_to_baud(unsigned int value);
|
---|
738 | extern void bb_warn_ignoring_args(int n);
|
---|
739 |
|
---|
740 | extern int get_linux_version_code(void);
|
---|
741 |
|
---|
742 | extern char *query_loop(const char *device);
|
---|
743 | extern int del_loop(const char *device);
|
---|
744 | /* If *devname is not NULL, use that name, otherwise try to find free one,
|
---|
745 | * malloc and return it in *devname.
|
---|
746 | * return value: 1: read-only loopdev was setup, 0: rw, < 0: error */
|
---|
747 | extern int set_loop(char **devname, const char *file, unsigned long long offset);
|
---|
748 |
|
---|
749 |
|
---|
750 | //TODO: pass buf pointer or return allocated buf (avoid statics)?
|
---|
751 | char *bb_askpass(int timeout, const char * prompt);
|
---|
752 | int bb_ask_confirmation(void);
|
---|
753 | int klogctl(int type, char * b, int len);
|
---|
754 |
|
---|
755 | extern int bb_parse_mode(const char* s, mode_t* theMode);
|
---|
756 |
|
---|
757 | char *concat_path_file(const char *path, const char *filename);
|
---|
758 | char *concat_subpath_file(const char *path, const char *filename);
|
---|
759 | const char *bb_basename(const char *name);
|
---|
760 | /* NB: can violate const-ness (similarly to strchr) */
|
---|
761 | char *last_char_is(const char *s, int c);
|
---|
762 |
|
---|
763 |
|
---|
764 | USE_DESKTOP(long long) int uncompress(int fd_in, int fd_out);
|
---|
765 | int inflate(int in, int out);
|
---|
766 |
|
---|
767 |
|
---|
768 | int bb_make_directory(char *path, long mode, int flags);
|
---|
769 |
|
---|
770 | int get_signum(const char *name);
|
---|
771 | const char *get_signame(int number);
|
---|
772 |
|
---|
773 | char *bb_simplify_path(const char *path);
|
---|
774 |
|
---|
775 | #define FAIL_DELAY 3
|
---|
776 | extern void bb_do_delay(int seconds);
|
---|
777 | extern void change_identity(const struct passwd *pw);
|
---|
778 | extern const char *change_identity_e2str(const struct passwd *pw);
|
---|
779 | extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args) ATTRIBUTE_NORETURN;
|
---|
780 | #if ENABLE_SELINUX
|
---|
781 | extern void renew_current_security_context(void);
|
---|
782 | extern void set_current_security_context(security_context_t sid);
|
---|
783 | extern context_t set_security_context_component(security_context_t cur_context,
|
---|
784 | char *user, char *role, char *type, char *range);
|
---|
785 | extern void setfscreatecon_or_die(security_context_t scontext);
|
---|
786 | #endif
|
---|
787 | extern void selinux_or_die(void);
|
---|
788 | extern int restricted_shell(const char *shell);
|
---|
789 | extern void setup_environment(const char *shell, int loginshell, int changeenv, const struct passwd *pw);
|
---|
790 | extern int correct_password(const struct passwd *pw);
|
---|
791 | /* Returns a ptr to static storage */
|
---|
792 | extern char *pw_encrypt(const char *clear, const char *salt);
|
---|
793 | extern int obscure(const char *old, const char *newval, const struct passwd *pwdp);
|
---|
794 | extern int index_in_str_array(const char *const string_array[], const char *key);
|
---|
795 | extern int index_in_strings(const char *strings, const char *key);
|
---|
796 | extern int index_in_substr_array(const char *const string_array[], const char *key);
|
---|
797 | extern int index_in_substrings(const char *strings, const char *key);
|
---|
798 | extern void print_login_issue(const char *issue_file, const char *tty);
|
---|
799 | extern void print_login_prompt(void);
|
---|
800 |
|
---|
801 | /* rnd is additional random input. New one is returned.
|
---|
802 | * Useful if you call crypt_make_salt many times in a row:
|
---|
803 | * rnd = crypt_make_salt(buf1, 4, 0);
|
---|
804 | * rnd = crypt_make_salt(buf2, 4, rnd);
|
---|
805 | * rnd = crypt_make_salt(buf3, 4, rnd);
|
---|
806 | * (otherwise we risk having same salt generated)
|
---|
807 | */
|
---|
808 | extern int crypt_make_salt(char *p, int cnt, int rnd);
|
---|
809 |
|
---|
810 | /* Returns number of lines changed, or -1 on error */
|
---|
811 | extern int update_passwd(const char *filename, const char *username,
|
---|
812 | const char *new_pw);
|
---|
813 |
|
---|
814 | /* NB: typically you want to pass fd 0, not 1. Think 'applet | grep something' */
|
---|
815 | int get_terminal_width_height(int fd, int *width, int *height);
|
---|
816 |
|
---|
817 | int ioctl_or_perror(int fd, int request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5)));
|
---|
818 | void ioctl_or_perror_and_die(int fd, int request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5)));
|
---|
819 | #if ENABLE_IOCTL_HEX2STR_ERROR
|
---|
820 | int bb_ioctl_or_warn(int fd, int request, void *argp, const char *ioctl_name);
|
---|
821 | void bb_xioctl(int fd, int request, void *argp, const char *ioctl_name);
|
---|
822 | #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp,#request)
|
---|
823 | #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp,#request)
|
---|
824 | #else
|
---|
825 | int bb_ioctl_or_warn(int fd, int request, void *argp);
|
---|
826 | void bb_xioctl(int fd, int request, void *argp);
|
---|
827 | #define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp)
|
---|
828 | #define xioctl(fd,request,argp) bb_xioctl(fd,request,argp)
|
---|
829 | #endif
|
---|
830 |
|
---|
831 | char *is_in_ino_dev_hashtable(const struct stat *statbuf);
|
---|
832 | void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name);
|
---|
833 | void reset_ino_dev_hashtable(void);
|
---|
834 | #ifdef __GLIBC__
|
---|
835 | /* At least glibc has horrendously large inline for this, so wrap it */
|
---|
836 | unsigned long long bb_makedev(unsigned int major, unsigned int minor);
|
---|
837 | #undef makedev
|
---|
838 | #define makedev(a,b) bb_makedev(a,b)
|
---|
839 | #endif
|
---|
840 |
|
---|
841 |
|
---|
842 | #if ENABLE_FEATURE_EDITING
|
---|
843 | /* It's NOT just ENABLEd or disabled. It's a number: */
|
---|
844 | #ifdef CONFIG_FEATURE_EDITING_HISTORY
|
---|
845 | #define MAX_HISTORY (CONFIG_FEATURE_EDITING_HISTORY + 0)
|
---|
846 | #else
|
---|
847 | #define MAX_HISTORY 0
|
---|
848 | #endif
|
---|
849 | typedef struct line_input_t {
|
---|
850 | int flags;
|
---|
851 | const char *path_lookup;
|
---|
852 | #if MAX_HISTORY
|
---|
853 | int cnt_history;
|
---|
854 | int cur_history;
|
---|
855 | USE_FEATURE_EDITING_SAVEHISTORY(const char *hist_file;)
|
---|
856 | char *history[MAX_HISTORY + 1];
|
---|
857 | #endif
|
---|
858 | } line_input_t;
|
---|
859 | enum {
|
---|
860 | DO_HISTORY = 1 * (MAX_HISTORY > 0),
|
---|
861 | SAVE_HISTORY = 2 * (MAX_HISTORY > 0) * ENABLE_FEATURE_EDITING_SAVEHISTORY,
|
---|
862 | TAB_COMPLETION = 4 * ENABLE_FEATURE_TAB_COMPLETION,
|
---|
863 | USERNAME_COMPLETION = 8 * ENABLE_FEATURE_USERNAME_COMPLETION,
|
---|
864 | VI_MODE = 0x10 * ENABLE_FEATURE_EDITING_VI,
|
---|
865 | WITH_PATH_LOOKUP = 0x20,
|
---|
866 | FOR_SHELL = DO_HISTORY | SAVE_HISTORY | TAB_COMPLETION | USERNAME_COMPLETION,
|
---|
867 | };
|
---|
868 | line_input_t *new_line_input_t(int flags);
|
---|
869 | int read_line_input(const char* prompt, char* command, int maxsize, line_input_t *state);
|
---|
870 | #else
|
---|
871 | int read_line_input(const char* prompt, char* command, int maxsize);
|
---|
872 | #define read_line_input(prompt, command, maxsize, state) \
|
---|
873 | read_line_input(prompt, command, maxsize)
|
---|
874 | #endif
|
---|
875 |
|
---|
876 |
|
---|
877 | #ifndef COMM_LEN
|
---|
878 | #ifdef TASK_COMM_LEN
|
---|
879 | enum { COMM_LEN = TASK_COMM_LEN };
|
---|
880 | #else
|
---|
881 | /* synchronize with sizeof(task_struct.comm) in /usr/include/linux/sched.h */
|
---|
882 | enum { COMM_LEN = 16 };
|
---|
883 | #endif
|
---|
884 | #endif
|
---|
885 | typedef struct {
|
---|
886 | DIR *dir;
|
---|
887 | /* Fields are set to 0/NULL if failed to determine (or not requested) */
|
---|
888 | /*char *cmd;*/
|
---|
889 | char *argv0;
|
---|
890 | /*char *exe;*/
|
---|
891 | USE_SELINUX(char *context;)
|
---|
892 | /* Everything below must contain no ptrs to malloc'ed data:
|
---|
893 | * it is memset(0) for each process in procps_scan() */
|
---|
894 | unsigned vsz, rss; /* we round it to kbytes */
|
---|
895 | unsigned long stime, utime;
|
---|
896 | unsigned pid;
|
---|
897 | unsigned ppid;
|
---|
898 | unsigned pgid;
|
---|
899 | unsigned sid;
|
---|
900 | unsigned uid;
|
---|
901 | unsigned gid;
|
---|
902 | unsigned tty_major,tty_minor;
|
---|
903 | char state[4];
|
---|
904 | /* basename of executable in exec(2), read from /proc/N/stat
|
---|
905 | * (if executable is symlink or script, it is NOT replaced
|
---|
906 | * by link target or interpreter name) */
|
---|
907 | char comm[COMM_LEN];
|
---|
908 | /* user/group? - use passwd/group parsing functions */
|
---|
909 | } procps_status_t;
|
---|
910 | enum {
|
---|
911 | PSSCAN_PID = 1 << 0,
|
---|
912 | PSSCAN_PPID = 1 << 1,
|
---|
913 | PSSCAN_PGID = 1 << 2,
|
---|
914 | PSSCAN_SID = 1 << 3,
|
---|
915 | PSSCAN_UIDGID = 1 << 4,
|
---|
916 | PSSCAN_COMM = 1 << 5,
|
---|
917 | /* PSSCAN_CMD = 1 << 6, - use read_cmdline instead */
|
---|
918 | PSSCAN_ARGV0 = 1 << 7,
|
---|
919 | /* PSSCAN_EXE = 1 << 8, - not implemented */
|
---|
920 | PSSCAN_STATE = 1 << 9,
|
---|
921 | PSSCAN_VSZ = 1 << 10,
|
---|
922 | PSSCAN_RSS = 1 << 11,
|
---|
923 | PSSCAN_STIME = 1 << 12,
|
---|
924 | PSSCAN_UTIME = 1 << 13,
|
---|
925 | PSSCAN_TTY = 1 << 14,
|
---|
926 | USE_SELINUX(PSSCAN_CONTEXT = 1 << 15,)
|
---|
927 | /* These are all retrieved from proc/NN/stat in one go: */
|
---|
928 | PSSCAN_STAT = PSSCAN_PPID | PSSCAN_PGID | PSSCAN_SID
|
---|
929 | | PSSCAN_COMM | PSSCAN_STATE
|
---|
930 | | PSSCAN_VSZ | PSSCAN_RSS
|
---|
931 | | PSSCAN_STIME | PSSCAN_UTIME
|
---|
932 | | PSSCAN_TTY,
|
---|
933 | };
|
---|
934 | procps_status_t* alloc_procps_scan(int flags);
|
---|
935 | void free_procps_scan(procps_status_t* sp);
|
---|
936 | procps_status_t* procps_scan(procps_status_t* sp, int flags);
|
---|
937 | /* Format cmdline (up to col chars) into char buf[col+1] */
|
---|
938 | /* Puts [comm] if cmdline is empty (-> process is a kernel thread) */
|
---|
939 | void read_cmdline(char *buf, int col, unsigned pid, const char *comm);
|
---|
940 | pid_t *find_pid_by_name(const char* procName);
|
---|
941 | pid_t *pidlist_reverse(pid_t *pidList);
|
---|
942 |
|
---|
943 |
|
---|
944 | extern const char bb_uuenc_tbl_base64[];
|
---|
945 | extern const char bb_uuenc_tbl_std[];
|
---|
946 | void bb_uuencode(char *store, const void *s, int length, const char *tbl);
|
---|
947 |
|
---|
948 | typedef struct sha1_ctx_t {
|
---|
949 | uint32_t count[2];
|
---|
950 | uint32_t hash[5];
|
---|
951 | uint32_t wbuf[16];
|
---|
952 | } sha1_ctx_t;
|
---|
953 | void sha1_begin(sha1_ctx_t *ctx);
|
---|
954 | void sha1_hash(const void *data, size_t length, sha1_ctx_t *ctx);
|
---|
955 | void *sha1_end(void *resbuf, sha1_ctx_t *ctx);
|
---|
956 |
|
---|
957 | typedef struct md5_ctx_t {
|
---|
958 | uint32_t A;
|
---|
959 | uint32_t B;
|
---|
960 | uint32_t C;
|
---|
961 | uint32_t D;
|
---|
962 | uint64_t total;
|
---|
963 | uint32_t buflen;
|
---|
964 | char buffer[128];
|
---|
965 | } md5_ctx_t;
|
---|
966 | void md5_begin(md5_ctx_t *ctx);
|
---|
967 | void md5_hash(const void *data, size_t length, md5_ctx_t *ctx);
|
---|
968 | void *md5_end(void *resbuf, md5_ctx_t *ctx);
|
---|
969 |
|
---|
970 | uint32_t *crc32_filltable(uint32_t *tbl256, int endian);
|
---|
971 |
|
---|
972 |
|
---|
973 | enum { /* DO NOT CHANGE THESE VALUES! cp.c, mv.c, install.c depend on them. */
|
---|
974 | FILEUTILS_PRESERVE_STATUS = 1,
|
---|
975 | FILEUTILS_DEREFERENCE = 2,
|
---|
976 | FILEUTILS_RECUR = 4,
|
---|
977 | FILEUTILS_FORCE = 8,
|
---|
978 | FILEUTILS_INTERACTIVE = 0x10,
|
---|
979 | FILEUTILS_MAKE_HARDLINK = 0x20,
|
---|
980 | FILEUTILS_MAKE_SOFTLINK = 0x40,
|
---|
981 | #if ENABLE_SELINUX
|
---|
982 | FILEUTILS_PRESERVE_SECURITY_CONTEXT = 0x80,
|
---|
983 | FILEUTILS_SET_SECURITY_CONTEXT = 0x100
|
---|
984 | #endif
|
---|
985 | };
|
---|
986 |
|
---|
987 | #define FILEUTILS_CP_OPTSTR "pdRfils" USE_SELINUX("c")
|
---|
988 | extern const struct bb_applet *current_applet;
|
---|
989 | extern const char *applet_name;
|
---|
990 | /* "BusyBox vN.N.N (timestamp or extra_vestion)" */
|
---|
991 | extern const char bb_banner[];
|
---|
992 | extern const char bb_msg_memory_exhausted[];
|
---|
993 | extern const char bb_msg_invalid_date[];
|
---|
994 | extern const char bb_msg_read_error[];
|
---|
995 | extern const char bb_msg_write_error[];
|
---|
996 | extern const char bb_msg_unknown[];
|
---|
997 | extern const char bb_msg_can_not_create_raw_socket[];
|
---|
998 | extern const char bb_msg_perm_denied_are_you_root[];
|
---|
999 | extern const char bb_msg_requires_arg[];
|
---|
1000 | extern const char bb_msg_invalid_arg[];
|
---|
1001 | extern const char bb_msg_standard_input[];
|
---|
1002 | extern const char bb_msg_standard_output[];
|
---|
1003 |
|
---|
1004 | extern const char bb_str_default[];
|
---|
1005 | /* NB: (bb_hexdigits_upcase[i] | 0x20) -> lowercase hex digit */
|
---|
1006 | extern const char bb_hexdigits_upcase[];
|
---|
1007 |
|
---|
1008 | extern const char bb_path_mtab_file[];
|
---|
1009 | extern const char bb_path_passwd_file[];
|
---|
1010 | extern const char bb_path_shadow_file[];
|
---|
1011 | extern const char bb_path_gshadow_file[];
|
---|
1012 | extern const char bb_path_group_file[];
|
---|
1013 | extern const char bb_path_motd_file[];
|
---|
1014 | extern const char bb_path_wtmp_file[];
|
---|
1015 | extern const char bb_dev_null[];
|
---|
1016 | extern const char bb_busybox_exec_path[];
|
---|
1017 | /* util-linux manpage says /sbin:/bin:/usr/sbin:/usr/bin,
|
---|
1018 | * but I want to save a few bytes here */
|
---|
1019 | extern const char bb_PATH_root_path[]; /* "PATH=/sbin:/usr/sbin:/bin:/usr/bin" */
|
---|
1020 | #define bb_default_root_path (bb_PATH_root_path + sizeof("PATH"))
|
---|
1021 | #define bb_default_path (bb_PATH_root_path + sizeof("PATH=/sbin:/usr/sbin"))
|
---|
1022 |
|
---|
1023 | extern const int const_int_0;
|
---|
1024 | extern const int const_int_1;
|
---|
1025 |
|
---|
1026 |
|
---|
1027 | #ifndef BUFSIZ
|
---|
1028 | #define BUFSIZ 4096
|
---|
1029 | #endif
|
---|
1030 | /* Providing hard guarantee on minimum size (think of BUFSIZ == 128) */
|
---|
1031 | enum { COMMON_BUFSIZE = (BUFSIZ >= 256*sizeof(void*) ? BUFSIZ+1 : 256*sizeof(void*)) };
|
---|
1032 | extern char bb_common_bufsiz1[COMMON_BUFSIZE];
|
---|
1033 | /* This struct is deliberately not defined. */
|
---|
1034 | /* See docs/keep_data_small.txt */
|
---|
1035 | struct globals;
|
---|
1036 | /* '*const' ptr makes gcc optimize code much better.
|
---|
1037 | * Magic prevents ptr_to_globals from going into rodata.
|
---|
1038 | * If you want to assign a value, use PTR_TO_GLOBALS = xxx */
|
---|
1039 | extern struct globals *const ptr_to_globals;
|
---|
1040 | #define PTR_TO_GLOBALS (*(struct globals**)&ptr_to_globals)
|
---|
1041 |
|
---|
1042 |
|
---|
1043 | /* You can change LIBBB_DEFAULT_LOGIN_SHELL, but don't use it,
|
---|
1044 | * use bb_default_login_shell and following defines.
|
---|
1045 | * If you change LIBBB_DEFAULT_LOGIN_SHELL,
|
---|
1046 | * don't forget to change increment constant. */
|
---|
1047 | #define LIBBB_DEFAULT_LOGIN_SHELL "-/bin/sh"
|
---|
1048 | extern const char bb_default_login_shell[];
|
---|
1049 | /* "/bin/sh" */
|
---|
1050 | #define DEFAULT_SHELL (bb_default_login_shell+1)
|
---|
1051 | /* "sh" */
|
---|
1052 | #define DEFAULT_SHELL_SHORT_NAME (bb_default_login_shell+6)
|
---|
1053 |
|
---|
1054 |
|
---|
1055 | #if ENABLE_FEATURE_DEVFS
|
---|
1056 | # define CURRENT_VC "/dev/vc/0"
|
---|
1057 | # define VC_1 "/dev/vc/1"
|
---|
1058 | # define VC_2 "/dev/vc/2"
|
---|
1059 | # define VC_3 "/dev/vc/3"
|
---|
1060 | # define VC_4 "/dev/vc/4"
|
---|
1061 | # define VC_5 "/dev/vc/5"
|
---|
1062 | #if defined(__sh__) || defined(__H8300H__) || defined(__H8300S__)
|
---|
1063 | /* Yes, this sucks, but both SH (including sh64) and H8 have a SCI(F) for their
|
---|
1064 | respective serial ports .. as such, we can't use the common device paths for
|
---|
1065 | these. -- PFM */
|
---|
1066 | # define SC_0 "/dev/ttsc/0"
|
---|
1067 | # define SC_1 "/dev/ttsc/1"
|
---|
1068 | # define SC_FORMAT "/dev/ttsc/%d"
|
---|
1069 | #else
|
---|
1070 | # define SC_0 "/dev/tts/0"
|
---|
1071 | # define SC_1 "/dev/tts/1"
|
---|
1072 | # define SC_FORMAT "/dev/tts/%d"
|
---|
1073 | #endif
|
---|
1074 | # define VC_FORMAT "/dev/vc/%d"
|
---|
1075 | # define LOOP_FORMAT "/dev/loop/%d"
|
---|
1076 | # define LOOP_NAMESIZE (sizeof("/dev/loop/") + sizeof(int)*3 + 1)
|
---|
1077 | # define LOOP_NAME "/dev/loop/"
|
---|
1078 | # define FB_0 "/dev/fb/0"
|
---|
1079 | #else
|
---|
1080 | # define CURRENT_VC "/dev/tty0"
|
---|
1081 | # define VC_1 "/dev/tty1"
|
---|
1082 | # define VC_2 "/dev/tty2"
|
---|
1083 | # define VC_3 "/dev/tty3"
|
---|
1084 | # define VC_4 "/dev/tty4"
|
---|
1085 | # define VC_5 "/dev/tty5"
|
---|
1086 | #if defined(__sh__) || defined(__H8300H__) || defined(__H8300S__)
|
---|
1087 | # define SC_0 "/dev/ttySC0"
|
---|
1088 | # define SC_1 "/dev/ttySC1"
|
---|
1089 | # define SC_FORMAT "/dev/ttySC%d"
|
---|
1090 | #else
|
---|
1091 | # define SC_0 "/dev/ttyS0"
|
---|
1092 | # define SC_1 "/dev/ttyS1"
|
---|
1093 | # define SC_FORMAT "/dev/ttyS%d"
|
---|
1094 | #endif
|
---|
1095 | # define VC_FORMAT "/dev/tty%d"
|
---|
1096 | # define LOOP_FORMAT "/dev/loop%d"
|
---|
1097 | # define LOOP_NAMESIZE (sizeof("/dev/loop") + sizeof(int)*3 + 1)
|
---|
1098 | # define LOOP_NAME "/dev/loop"
|
---|
1099 | # define FB_0 "/dev/fb0"
|
---|
1100 | #endif
|
---|
1101 |
|
---|
1102 | /* The following devices are the same on devfs and non-devfs systems. */
|
---|
1103 | #define CURRENT_TTY "/dev/tty"
|
---|
1104 | #define DEV_CONSOLE "/dev/console"
|
---|
1105 |
|
---|
1106 |
|
---|
1107 | #ifndef RB_POWER_OFF
|
---|
1108 | /* Stop system and switch power off if possible. */
|
---|
1109 | #define RB_POWER_OFF 0x4321fedc
|
---|
1110 | #endif
|
---|
1111 |
|
---|
1112 | /* Make sure we call functions instead of macros. */
|
---|
1113 | #undef isalnum
|
---|
1114 | #undef isalpha
|
---|
1115 | #undef isascii
|
---|
1116 | #undef isblank
|
---|
1117 | #undef iscntrl
|
---|
1118 | #undef isgraph
|
---|
1119 | #undef islower
|
---|
1120 | #undef isprint
|
---|
1121 | #undef ispunct
|
---|
1122 | #undef isspace
|
---|
1123 | #undef isupper
|
---|
1124 | #undef isxdigit
|
---|
1125 |
|
---|
1126 | /* This one is more efficient - we save ~400 bytes */
|
---|
1127 | #undef isdigit
|
---|
1128 | #define isdigit(a) ((unsigned)((a) - '0') <= 9)
|
---|
1129 |
|
---|
1130 |
|
---|
1131 | #ifdef DMALLOC
|
---|
1132 | #include <dmalloc.h>
|
---|
1133 | #endif
|
---|
1134 |
|
---|
1135 |
|
---|
1136 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
|
---|
1137 |
|
---|
1138 | #endif /* __LIBBUSYBOX_H__ */
|
---|