1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * Mini find implementation for busybox
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4 | *
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5 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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6 | *
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7 | * Reworked by David Douthitt <n9ubh@callsign.net> and
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8 | * Matt Kraai <kraai@alumni.carnegiemellon.edu>.
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9 | *
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10 | * Licensed under the GPL version 2, see the file LICENSE in this tarball.
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11 | */
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12 |
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13 | /* findutils-4.1.20:
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14 | *
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15 | * # find file.txt -exec 'echo {}' '{} {}' ';'
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16 | * find: echo file.txt: No such file or directory
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17 | * # find file.txt -exec 'echo' '{} {}' '; '
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18 | * find: missing argument to `-exec'
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19 | * # find file.txt -exec 'echo {}' '{} {}' ';' junk
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20 | * find: paths must precede expression
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21 | * # find file.txt -exec 'echo {}' '{} {}' ';' junk ';'
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22 | * find: paths must precede expression
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23 | * # find file.txt -exec 'echo' '{} {}' ';'
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24 | * file.txt file.txt
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25 | * (strace: execve("/bin/echo", ["echo", "file.txt file.txt"], [ 30 vars ]))
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26 | * # find file.txt -exec 'echo' '{} {}' ';' -print -exec pwd ';'
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27 | * file.txt file.txt
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28 | * file.txt
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29 | * /tmp
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30 | * # find -name '*.c' -o -name '*.h'
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31 | * [shows files, *.c and *.h intermixed]
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32 | * # find file.txt -name '*f*' -o -name '*t*'
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33 | * file.txt
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34 | * # find file.txt -name '*z*' -o -name '*t*'
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35 | * file.txt
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36 | * # find file.txt -name '*f*' -o -name '*z*'
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37 | * file.txt
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38 | *
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39 | * # find t z -name '*t*' -print -o -name '*z*'
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40 | * t
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41 | * # find t z t z -name '*t*' -o -name '*z*' -print
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42 | * z
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43 | * z
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44 | * # find t z t z '(' -name '*t*' -o -name '*z*' ')' -o -print
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45 | * (no output)
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46 | */
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47 |
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48 | /* Testing script
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49 | * ./busybox find "$@" | tee /tmp/bb_find
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50 | * echo ==================
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51 | * /path/to/gnu/find "$@" | tee /tmp/std_find
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52 | * echo ==================
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53 | * diff -u /tmp/std_find /tmp/bb_find && echo Identical
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54 | */
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55 |
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56 | #include <fnmatch.h>
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57 | #include "libbb.h"
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58 | #if ENABLE_FEATURE_FIND_REGEX
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59 | #include "xregex.h"
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60 | #endif
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61 |
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62 | /* This is a NOEXEC applet. Be very careful! */
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63 |
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64 |
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65 | USE_FEATURE_FIND_XDEV(static dev_t *xdev_dev;)
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66 | USE_FEATURE_FIND_XDEV(static int xdev_count;)
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67 |
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68 | typedef int (*action_fp)(const char *fileName, struct stat *statbuf, void *);
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69 |
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70 | typedef struct {
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71 | action_fp f;
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72 | #if ENABLE_FEATURE_FIND_NOT
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73 | bool invert;
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74 | #endif
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75 | } action;
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76 | #define ACTS(name, arg...) typedef struct { action a; arg; } action_##name;
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77 | #define ACTF(name) static int func_##name(const char *fileName, struct stat *statbuf, action_##name* ap)
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78 | ACTS(print)
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79 | ACTS(name, const char *pattern;)
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80 | USE_FEATURE_FIND_PATH( ACTS(path, const char *pattern;))
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81 | USE_FEATURE_FIND_REGEX( ACTS(regex, regex_t compiled_pattern;))
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82 | USE_FEATURE_FIND_PRINT0( ACTS(print0))
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83 | USE_FEATURE_FIND_TYPE( ACTS(type, int type_mask;))
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84 | USE_FEATURE_FIND_PERM( ACTS(perm, char perm_char; mode_t perm_mask;))
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85 | USE_FEATURE_FIND_MTIME( ACTS(mtime, char mtime_char; unsigned mtime_days;))
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86 | USE_FEATURE_FIND_MMIN( ACTS(mmin, char mmin_char; unsigned mmin_mins;))
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87 | USE_FEATURE_FIND_NEWER( ACTS(newer, time_t newer_mtime;))
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88 | USE_FEATURE_FIND_INUM( ACTS(inum, ino_t inode_num;))
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89 | USE_FEATURE_FIND_USER( ACTS(user, uid_t uid;))
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90 | USE_FEATURE_FIND_SIZE( ACTS(size, char size_char; off_t size;))
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91 | USE_FEATURE_FIND_CONTEXT(ACTS(context, security_context_t context;))
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92 | USE_FEATURE_FIND_PAREN( ACTS(paren, action ***subexpr;))
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93 | USE_FEATURE_FIND_PRUNE( ACTS(prune))
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94 | USE_FEATURE_FIND_DELETE( ACTS(delete))
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95 | USE_FEATURE_FIND_EXEC( ACTS(exec, char **exec_argv; unsigned *subst_count; int exec_argc;))
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96 | USE_FEATURE_FIND_GROUP( ACTS(group, gid_t gid;))
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97 |
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98 | static action ***actions;
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99 | static bool need_print = 1;
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100 | static int recurse_flags = ACTION_RECURSE;
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101 |
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102 | #if ENABLE_FEATURE_FIND_EXEC
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103 | static unsigned count_subst(const char *str)
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104 | {
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105 | unsigned count = 0;
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106 | while ((str = strstr(str, "{}")) != NULL) {
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107 | count++;
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108 | str++;
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109 | }
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110 | return count;
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111 | }
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112 |
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113 |
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114 | static char* subst(const char *src, unsigned count, const char* filename)
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115 | {
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116 | char *buf, *dst, *end;
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117 | size_t flen = strlen(filename);
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118 | /* we replace each '{}' with filename: growth by strlen-2 */
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119 | buf = dst = xmalloc(strlen(src) + count*(flen-2) + 1);
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120 | while ((end = strstr(src, "{}"))) {
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121 | memcpy(dst, src, end - src);
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122 | dst += end - src;
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123 | src = end + 2;
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124 | memcpy(dst, filename, flen);
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125 | dst += flen;
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126 | }
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127 | strcpy(dst, src);
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128 | return buf;
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129 | }
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130 | #endif
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131 |
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132 | /* Return values of ACTFs ('action functions') are a bit mask:
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133 | * bit 1=1: prune (use SKIP constant for setting it)
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134 | * bit 0=1: matched successfully (TRUE)
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135 | */
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136 |
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137 | static int exec_actions(action ***appp, const char *fileName, struct stat *statbuf)
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138 | {
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139 | int cur_group;
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140 | int cur_action;
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141 | int rc = 0;
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142 | action **app, *ap;
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143 |
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144 | /* "action group" is a set of actions ANDed together.
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145 | * groups are ORed together.
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146 | * We simply evaluate each group until we find one in which all actions
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147 | * succeed. */
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148 |
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149 | /* -prune is special: if it is encountered, then we won't
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150 | * descend into current directory. It doesn't matter whether
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151 | * action group (in which -prune sits) will succeed or not:
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152 | * find * -prune -name 'f*' -o -name 'm*' -- prunes every dir
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153 | * find * -name 'f*' -o -prune -name 'm*' -- prunes all dirs
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154 | * not starting with 'f' */
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155 |
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156 | /* We invert TRUE bit (bit 0). Now 1 there means 'failure'.
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157 | * and bitwise OR in "rc |= TRUE ^ ap->f()" will:
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158 | * (1) make SKIP (-prune) bit stick; and (2) detect 'failure'.
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159 | * On return, bit is restored. */
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160 |
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161 | cur_group = -1;
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162 | while ((app = appp[++cur_group])) {
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163 | rc &= ~TRUE; /* 'success' so far, clear TRUE bit */
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164 | cur_action = -1;
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165 | while (1) {
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166 | ap = app[++cur_action];
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167 | if (!ap) /* all actions in group were successful */
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168 | return rc ^ TRUE; /* restore TRUE bit */
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169 | rc |= TRUE ^ ap->f(fileName, statbuf, ap);
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170 | #if ENABLE_FEATURE_FIND_NOT
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171 | if (ap->invert) rc ^= TRUE;
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172 | #endif
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173 | if (rc & TRUE) /* current group failed, try next */
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174 | break;
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175 | }
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176 | }
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177 | return rc ^ TRUE; /* restore TRUE bit */
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178 | }
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179 |
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180 |
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181 | ACTF(name)
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182 | {
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183 | const char *tmp = bb_basename(fileName);
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184 | if (tmp != fileName && !*tmp) { /* "foo/bar/". Oh no... go back to 'b' */
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185 | tmp--;
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186 | while (tmp != fileName && *--tmp != '/')
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187 | continue;
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188 | if (*tmp == '/')
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189 | tmp++;
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190 | }
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191 | return fnmatch(ap->pattern, tmp, FNM_PERIOD) == 0;
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192 | }
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193 | #if ENABLE_FEATURE_FIND_PATH
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194 | ACTF(path)
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195 | {
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196 | return fnmatch(ap->pattern, fileName, 0) == 0;
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197 | }
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198 | #endif
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199 | #if ENABLE_FEATURE_FIND_REGEX
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200 | ACTF(regex)
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201 | {
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202 | regmatch_t match;
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203 | if (regexec(&ap->compiled_pattern, fileName, 1, &match, 0 /*eflags*/))
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204 | return 0; /* no match */
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205 | if (match.rm_so)
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206 | return 0; /* match doesn't start at pos 0 */
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207 | if (fileName[match.rm_eo])
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208 | return 0; /* match doesn't end exactly at end of pathname */
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209 | return 1;
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210 | }
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211 | #endif
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212 | #if ENABLE_FEATURE_FIND_TYPE
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213 | ACTF(type)
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214 | {
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215 | return ((statbuf->st_mode & S_IFMT) == ap->type_mask);
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216 | }
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217 | #endif
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218 | #if ENABLE_FEATURE_FIND_PERM
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219 | ACTF(perm)
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220 | {
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221 | /* -perm +mode: at least one of perm_mask bits are set */
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222 | if (ap->perm_char == '+')
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223 | return (statbuf->st_mode & ap->perm_mask) != 0;
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224 | /* -perm -mode: all of perm_mask are set */
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225 | if (ap->perm_char == '-')
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226 | return (statbuf->st_mode & ap->perm_mask) == ap->perm_mask;
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227 | /* -perm mode: file mode must match perm_mask */
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228 | return (statbuf->st_mode & 07777) == ap->perm_mask;
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229 | }
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230 | #endif
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231 | #if ENABLE_FEATURE_FIND_MTIME
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232 | ACTF(mtime)
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233 | {
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234 | time_t file_age = time(NULL) - statbuf->st_mtime;
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235 | time_t mtime_secs = ap->mtime_days * 24*60*60;
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236 | if (ap->mtime_char == '+')
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237 | return file_age >= mtime_secs + 24*60*60;
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238 | if (ap->mtime_char == '-')
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239 | return file_age < mtime_secs;
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240 | /* just numeric mtime */
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241 | return file_age >= mtime_secs && file_age < (mtime_secs + 24*60*60);
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242 | }
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243 | #endif
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244 | #if ENABLE_FEATURE_FIND_MMIN
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245 | ACTF(mmin)
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246 | {
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247 | time_t file_age = time(NULL) - statbuf->st_mtime;
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248 | time_t mmin_secs = ap->mmin_mins * 60;
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249 | if (ap->mmin_char == '+')
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250 | return file_age >= mmin_secs + 60;
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251 | if (ap->mmin_char == '-')
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252 | return file_age < mmin_secs;
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253 | /* just numeric mmin */
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254 | return file_age >= mmin_secs && file_age < (mmin_secs + 60);
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255 | }
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256 | #endif
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257 | #if ENABLE_FEATURE_FIND_NEWER
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258 | ACTF(newer)
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259 | {
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260 | return (ap->newer_mtime < statbuf->st_mtime);
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261 | }
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262 | #endif
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263 | #if ENABLE_FEATURE_FIND_INUM
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264 | ACTF(inum)
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265 | {
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266 | return (statbuf->st_ino == ap->inode_num);
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267 | }
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268 | #endif
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269 | #if ENABLE_FEATURE_FIND_EXEC
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270 | ACTF(exec)
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271 | {
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272 | int i, rc;
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273 | char *argv[ap->exec_argc + 1];
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274 | for (i = 0; i < ap->exec_argc; i++)
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275 | argv[i] = subst(ap->exec_argv[i], ap->subst_count[i], fileName);
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276 | argv[i] = NULL; /* terminate the list */
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277 |
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278 | rc = spawn_and_wait(argv);
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279 | if (rc < 0)
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280 | bb_perror_msg("%s", argv[0]);
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281 |
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282 | i = 0;
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283 | while (argv[i])
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284 | free(argv[i++]);
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285 | return rc == 0; /* return 1 if exitcode 0 */
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286 | }
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287 | #endif
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288 | #if ENABLE_FEATURE_FIND_USER
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289 | ACTF(user)
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290 | {
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291 | return (statbuf->st_uid == ap->uid);
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292 | }
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293 | #endif
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294 | #if ENABLE_FEATURE_FIND_GROUP
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295 | ACTF(group)
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296 | {
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297 | return (statbuf->st_gid == ap->gid);
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298 | }
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299 | #endif
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300 | #if ENABLE_FEATURE_FIND_PRINT0
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301 | ACTF(print0)
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302 | {
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303 | printf("%s%c", fileName, '\0');
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304 | return TRUE;
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305 | }
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306 | #endif
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307 | ACTF(print)
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308 | {
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309 | puts(fileName);
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310 | return TRUE;
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311 | }
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312 | #if ENABLE_FEATURE_FIND_PAREN
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313 | ACTF(paren)
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314 | {
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315 | return exec_actions(ap->subexpr, fileName, statbuf);
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316 | }
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317 | #endif
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318 | #if ENABLE_FEATURE_FIND_SIZE
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319 | ACTF(size)
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320 | {
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321 | if (ap->size_char == '+')
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322 | return statbuf->st_size > ap->size;
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323 | if (ap->size_char == '-')
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324 | return statbuf->st_size < ap->size;
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325 | return statbuf->st_size == ap->size;
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326 | }
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327 | #endif
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328 | #if ENABLE_FEATURE_FIND_PRUNE
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329 | /*
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330 | * -prune: if -depth is not given, return true and do not descend
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331 | * current dir; if -depth is given, return false with no effect.
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332 | * Example:
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333 | * find dir -name 'asm-*' -prune -o -name '*.[chS]' -print
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334 | */
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335 | ACTF(prune)
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336 | {
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337 | return SKIP + TRUE;
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338 | }
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339 | #endif
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340 | #if ENABLE_FEATURE_FIND_DELETE
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341 | ACTF(delete)
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342 | {
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343 | int rc;
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344 | if (S_ISDIR(statbuf->st_mode)) {
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345 | rc = rmdir(fileName);
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346 | } else {
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347 | rc = unlink(fileName);
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348 | }
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349 | if (rc < 0)
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350 | bb_perror_msg("%s", fileName);
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351 | return TRUE;
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352 | }
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353 | #endif
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354 | #if ENABLE_FEATURE_FIND_CONTEXT
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355 | ACTF(context)
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356 | {
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357 | security_context_t con;
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358 | int rc;
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359 |
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360 | if (recurse_flags & ACTION_FOLLOWLINKS) {
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361 | rc = getfilecon(fileName, &con);
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362 | } else {
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363 | rc = lgetfilecon(fileName, &con);
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364 | }
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365 | if (rc < 0)
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366 | return FALSE;
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367 | rc = strcmp(ap->context, con);
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368 | freecon(con);
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369 | return rc == 0;
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370 | }
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371 | #endif
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372 |
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373 |
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374 | static int fileAction(const char *fileName, struct stat *statbuf, void *userData, int depth)
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375 | {
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376 | int i;
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377 | #if ENABLE_FEATURE_FIND_MAXDEPTH
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378 | int maxdepth = (int)(ptrdiff_t)userData;
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379 |
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380 | if (depth > maxdepth) return SKIP;
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381 | #endif
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382 |
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383 | #if ENABLE_FEATURE_FIND_XDEV
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384 | if (S_ISDIR(statbuf->st_mode) && xdev_count) {
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385 | for (i = 0; i < xdev_count; i++) {
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386 | if (xdev_dev[i] == statbuf->st_dev)
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387 | break;
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388 | }
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389 | if (i == xdev_count)
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390 | return SKIP;
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391 | }
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392 | #endif
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393 | i = exec_actions(actions, fileName, statbuf);
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394 | /* Had no explicit -print[0] or -exec? then print */
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395 | if ((i & TRUE) && need_print)
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396 | puts(fileName);
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397 | /* Cannot return 0: our caller, recursive_action(),
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398 | * will perror() and skip dirs (if called on dir) */
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399 | return (i & SKIP) ? SKIP : TRUE;
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400 | }
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401 |
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402 |
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403 | #if ENABLE_FEATURE_FIND_TYPE
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404 | static int find_type(const char *type)
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405 | {
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406 | int mask = 0;
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407 |
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408 | if (*type == 'b')
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409 | mask = S_IFBLK;
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410 | else if (*type == 'c')
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411 | mask = S_IFCHR;
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412 | else if (*type == 'd')
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413 | mask = S_IFDIR;
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414 | else if (*type == 'p')
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415 | mask = S_IFIFO;
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416 | else if (*type == 'f')
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417 | mask = S_IFREG;
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418 | else if (*type == 'l')
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419 | mask = S_IFLNK;
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420 | else if (*type == 's')
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421 | mask = S_IFSOCK;
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422 |
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423 | if (mask == 0 || *(type + 1) != '\0')
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424 | bb_error_msg_and_die(bb_msg_invalid_arg, type, "-type");
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425 |
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426 | return mask;
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427 | }
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428 | #endif
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429 |
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430 | #if ENABLE_FEATURE_FIND_PERM \
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431 | || ENABLE_FEATURE_FIND_MTIME || ENABLE_FEATURE_FIND_MMIN \
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432 | || ENABLE_FEATURE_FIND_SIZE
|
---|
433 | static const char* plus_minus_num(const char* str)
|
---|
434 | {
|
---|
435 | if (*str == '-' || *str == '+')
|
---|
436 | str++;
|
---|
437 | return str;
|
---|
438 | }
|
---|
439 | #endif
|
---|
440 |
|
---|
441 | static action*** parse_params(char **argv)
|
---|
442 | {
|
---|
443 | enum {
|
---|
444 | PARM_a ,
|
---|
445 | PARM_o ,
|
---|
446 | USE_FEATURE_FIND_NOT( PARM_char_not ,)
|
---|
447 | #if ENABLE_DESKTOP
|
---|
448 | PARM_and ,
|
---|
449 | PARM_or ,
|
---|
450 | USE_FEATURE_FIND_NOT( PARM_not ,)
|
---|
451 | #endif
|
---|
452 | PARM_print ,
|
---|
453 | USE_FEATURE_FIND_PRINT0( PARM_print0 ,)
|
---|
454 | USE_FEATURE_FIND_DEPTH( PARM_depth ,)
|
---|
455 | USE_FEATURE_FIND_PRUNE( PARM_prune ,)
|
---|
456 | USE_FEATURE_FIND_DELETE( PARM_delete ,)
|
---|
457 | USE_FEATURE_FIND_EXEC( PARM_exec ,)
|
---|
458 | USE_FEATURE_FIND_PAREN( PARM_char_brace,)
|
---|
459 | /* All options starting from here require argument */
|
---|
460 | PARM_name ,
|
---|
461 | USE_FEATURE_FIND_PATH( PARM_path ,)
|
---|
462 | USE_FEATURE_FIND_REGEX( PARM_regex ,)
|
---|
463 | USE_FEATURE_FIND_TYPE( PARM_type ,)
|
---|
464 | USE_FEATURE_FIND_PERM( PARM_perm ,)
|
---|
465 | USE_FEATURE_FIND_MTIME( PARM_mtime ,)
|
---|
466 | USE_FEATURE_FIND_MMIN( PARM_mmin ,)
|
---|
467 | USE_FEATURE_FIND_NEWER( PARM_newer ,)
|
---|
468 | USE_FEATURE_FIND_INUM( PARM_inum ,)
|
---|
469 | USE_FEATURE_FIND_USER( PARM_user ,)
|
---|
470 | USE_FEATURE_FIND_GROUP( PARM_group ,)
|
---|
471 | USE_FEATURE_FIND_SIZE( PARM_size ,)
|
---|
472 | USE_FEATURE_FIND_CONTEXT(PARM_context ,)
|
---|
473 | };
|
---|
474 |
|
---|
475 | static const char params[] ALIGN1 =
|
---|
476 | "-a\0"
|
---|
477 | "-o\0"
|
---|
478 | USE_FEATURE_FIND_NOT( "!\0" )
|
---|
479 | #if ENABLE_DESKTOP
|
---|
480 | "-and\0"
|
---|
481 | "-or\0"
|
---|
482 | USE_FEATURE_FIND_NOT( "-not\0" )
|
---|
483 | #endif
|
---|
484 | "-print\0"
|
---|
485 | USE_FEATURE_FIND_PRINT0( "-print0\0" )
|
---|
486 | USE_FEATURE_FIND_DEPTH( "-depth\0" )
|
---|
487 | USE_FEATURE_FIND_PRUNE( "-prune\0" )
|
---|
488 | USE_FEATURE_FIND_DELETE( "-delete\0" )
|
---|
489 | USE_FEATURE_FIND_EXEC( "-exec\0" )
|
---|
490 | USE_FEATURE_FIND_PAREN( "(\0" )
|
---|
491 | /* All options starting from here require argument */
|
---|
492 | "-name\0"
|
---|
493 | USE_FEATURE_FIND_PATH( "-path\0" )
|
---|
494 | USE_FEATURE_FIND_REGEX( "-regex\0" )
|
---|
495 | USE_FEATURE_FIND_TYPE( "-type\0" )
|
---|
496 | USE_FEATURE_FIND_PERM( "-perm\0" )
|
---|
497 | USE_FEATURE_FIND_MTIME( "-mtime\0" )
|
---|
498 | USE_FEATURE_FIND_MMIN( "-mmin\0" )
|
---|
499 | USE_FEATURE_FIND_NEWER( "-newer\0" )
|
---|
500 | USE_FEATURE_FIND_INUM( "-inum\0" )
|
---|
501 | USE_FEATURE_FIND_USER( "-user\0" )
|
---|
502 | USE_FEATURE_FIND_GROUP( "-group\0" )
|
---|
503 | USE_FEATURE_FIND_SIZE( "-size\0" )
|
---|
504 | USE_FEATURE_FIND_CONTEXT("-context\0")
|
---|
505 | ;
|
---|
506 |
|
---|
507 | action*** appp;
|
---|
508 | unsigned cur_group = 0;
|
---|
509 | unsigned cur_action = 0;
|
---|
510 | USE_FEATURE_FIND_NOT( bool invert_flag = 0; )
|
---|
511 |
|
---|
512 | /* 'static' doesn't work here! (gcc 4.1.2) */
|
---|
513 | action* alloc_action(int sizeof_struct, action_fp f)
|
---|
514 | {
|
---|
515 | action *ap;
|
---|
516 | appp[cur_group] = xrealloc(appp[cur_group], (cur_action+2) * sizeof(*appp));
|
---|
517 | appp[cur_group][cur_action++] = ap = xmalloc(sizeof_struct);
|
---|
518 | appp[cur_group][cur_action] = NULL;
|
---|
519 | ap->f = f;
|
---|
520 | USE_FEATURE_FIND_NOT( ap->invert = invert_flag; )
|
---|
521 | USE_FEATURE_FIND_NOT( invert_flag = 0; )
|
---|
522 | return ap;
|
---|
523 | }
|
---|
524 |
|
---|
525 | #define ALLOC_ACTION(name) (action_##name*)alloc_action(sizeof(action_##name), (action_fp) func_##name)
|
---|
526 |
|
---|
527 | appp = xzalloc(2 * sizeof(appp[0])); /* appp[0],[1] == NULL */
|
---|
528 |
|
---|
529 | /* Actions have side effects and return a true or false value
|
---|
530 | * We implement: -print, -print0, -exec
|
---|
531 | *
|
---|
532 | * The rest are tests.
|
---|
533 | *
|
---|
534 | * Tests and actions are grouped by operators
|
---|
535 | * ( expr ) Force precedence
|
---|
536 | * ! expr True if expr is false
|
---|
537 | * -not expr Same as ! expr
|
---|
538 | * expr1 [-a[nd]] expr2 And; expr2 is not evaluated if expr1 is false
|
---|
539 | * expr1 -o[r] expr2 Or; expr2 is not evaluated if expr1 is true
|
---|
540 | * expr1 , expr2 List; both expr1 and expr2 are always evaluated
|
---|
541 | * We implement: (), -a, -o
|
---|
542 | */
|
---|
543 | while (*argv) {
|
---|
544 | const char *arg = argv[0];
|
---|
545 | int parm = index_in_strings(params, arg);
|
---|
546 | const char *arg1 = argv[1];
|
---|
547 |
|
---|
548 | if (parm >= PARM_name) {
|
---|
549 | /* All options starting from -name require argument */
|
---|
550 | if (!arg1)
|
---|
551 | bb_error_msg_and_die(bb_msg_requires_arg, arg);
|
---|
552 | argv++;
|
---|
553 | }
|
---|
554 |
|
---|
555 | /* We can use big switch() here, but on i386
|
---|
556 | * it doesn't give smaller code. Other arches? */
|
---|
557 |
|
---|
558 | /* --- Operators --- */
|
---|
559 | if (parm == PARM_a USE_DESKTOP(|| parm == PARM_and)) {
|
---|
560 | /* no further special handling required */
|
---|
561 | }
|
---|
562 | else if (parm == PARM_o USE_DESKTOP(|| parm == PARM_or)) {
|
---|
563 | /* start new OR group */
|
---|
564 | cur_group++;
|
---|
565 | appp = xrealloc(appp, (cur_group+2) * sizeof(*appp));
|
---|
566 | /*appp[cur_group] = NULL; - already NULL */
|
---|
567 | appp[cur_group+1] = NULL;
|
---|
568 | cur_action = 0;
|
---|
569 | }
|
---|
570 | #if ENABLE_FEATURE_FIND_NOT
|
---|
571 | else if (parm == PARM_char_not USE_DESKTOP(|| parm == PARM_not)) {
|
---|
572 | /* also handles "find ! ! -name 'foo*'" */
|
---|
573 | invert_flag ^= 1;
|
---|
574 | }
|
---|
575 | #endif
|
---|
576 |
|
---|
577 | /* --- Tests and actions --- */
|
---|
578 | else if (parm == PARM_print) {
|
---|
579 | need_print = 0;
|
---|
580 | /* GNU find ignores '!' here: "find ! -print" */
|
---|
581 | USE_FEATURE_FIND_NOT( invert_flag = 0; )
|
---|
582 | (void) ALLOC_ACTION(print);
|
---|
583 | }
|
---|
584 | #if ENABLE_FEATURE_FIND_PRINT0
|
---|
585 | else if (parm == PARM_print0) {
|
---|
586 | need_print = 0;
|
---|
587 | USE_FEATURE_FIND_NOT( invert_flag = 0; )
|
---|
588 | (void) ALLOC_ACTION(print0);
|
---|
589 | }
|
---|
590 | #endif
|
---|
591 | #if ENABLE_FEATURE_FIND_DEPTH
|
---|
592 | else if (parm == PARM_depth) {
|
---|
593 | recurse_flags |= ACTION_DEPTHFIRST;
|
---|
594 | }
|
---|
595 | #endif
|
---|
596 | #if ENABLE_FEATURE_FIND_PRUNE
|
---|
597 | else if (parm == PARM_prune) {
|
---|
598 | USE_FEATURE_FIND_NOT( invert_flag = 0; )
|
---|
599 | (void) ALLOC_ACTION(prune);
|
---|
600 | }
|
---|
601 | #endif
|
---|
602 | #if ENABLE_FEATURE_FIND_DELETE
|
---|
603 | else if (parm == PARM_delete) {
|
---|
604 | need_print = 0;
|
---|
605 | recurse_flags |= ACTION_DEPTHFIRST;
|
---|
606 | (void) ALLOC_ACTION(delete);
|
---|
607 | }
|
---|
608 | #endif
|
---|
609 | #if ENABLE_FEATURE_FIND_EXEC
|
---|
610 | else if (parm == PARM_exec) {
|
---|
611 | int i;
|
---|
612 | action_exec *ap;
|
---|
613 | need_print = 0;
|
---|
614 | USE_FEATURE_FIND_NOT( invert_flag = 0; )
|
---|
615 | ap = ALLOC_ACTION(exec);
|
---|
616 | ap->exec_argv = ++argv; /* first arg after -exec */
|
---|
617 | ap->exec_argc = 0;
|
---|
618 | while (1) {
|
---|
619 | if (!*argv) /* did not see ';' until end */
|
---|
620 | bb_error_msg_and_die("-exec CMD must end by ';'");
|
---|
621 | if (LONE_CHAR(argv[0], ';'))
|
---|
622 | break;
|
---|
623 | argv++;
|
---|
624 | ap->exec_argc++;
|
---|
625 | }
|
---|
626 | if (ap->exec_argc == 0)
|
---|
627 | bb_error_msg_and_die(bb_msg_requires_arg, arg);
|
---|
628 | ap->subst_count = xmalloc(ap->exec_argc * sizeof(int));
|
---|
629 | i = ap->exec_argc;
|
---|
630 | while (i--)
|
---|
631 | ap->subst_count[i] = count_subst(ap->exec_argv[i]);
|
---|
632 | }
|
---|
633 | #endif
|
---|
634 | #if ENABLE_FEATURE_FIND_PAREN
|
---|
635 | else if (parm == PARM_char_brace) {
|
---|
636 | action_paren *ap;
|
---|
637 | char **endarg;
|
---|
638 | unsigned nested = 1;
|
---|
639 |
|
---|
640 | endarg = argv;
|
---|
641 | while (1) {
|
---|
642 | if (!*++endarg)
|
---|
643 | bb_error_msg_and_die("unpaired '('");
|
---|
644 | if (LONE_CHAR(*endarg, '('))
|
---|
645 | nested++;
|
---|
646 | else if (LONE_CHAR(*endarg, ')') && !--nested) {
|
---|
647 | *endarg = NULL;
|
---|
648 | break;
|
---|
649 | }
|
---|
650 | }
|
---|
651 | ap = ALLOC_ACTION(paren);
|
---|
652 | ap->subexpr = parse_params(argv + 1);
|
---|
653 | *endarg = (char*) ")"; /* restore NULLed parameter */
|
---|
654 | argv = endarg;
|
---|
655 | }
|
---|
656 | #endif
|
---|
657 | else if (parm == PARM_name) {
|
---|
658 | action_name *ap;
|
---|
659 | ap = ALLOC_ACTION(name);
|
---|
660 | ap->pattern = arg1;
|
---|
661 | }
|
---|
662 | #if ENABLE_FEATURE_FIND_PATH
|
---|
663 | else if (parm == PARM_path) {
|
---|
664 | action_path *ap;
|
---|
665 | ap = ALLOC_ACTION(path);
|
---|
666 | ap->pattern = arg1;
|
---|
667 | }
|
---|
668 | #endif
|
---|
669 | #if ENABLE_FEATURE_FIND_REGEX
|
---|
670 | else if (parm == PARM_regex) {
|
---|
671 | action_regex *ap;
|
---|
672 | ap = ALLOC_ACTION(regex);
|
---|
673 | xregcomp(&ap->compiled_pattern, arg1, 0 /*cflags*/);
|
---|
674 | }
|
---|
675 | #endif
|
---|
676 | #if ENABLE_FEATURE_FIND_TYPE
|
---|
677 | else if (parm == PARM_type) {
|
---|
678 | action_type *ap;
|
---|
679 | ap = ALLOC_ACTION(type);
|
---|
680 | ap->type_mask = find_type(arg1);
|
---|
681 | }
|
---|
682 | #endif
|
---|
683 | #if ENABLE_FEATURE_FIND_PERM
|
---|
684 | /* -perm mode File's permission bits are exactly mode (octal or symbolic).
|
---|
685 | * Symbolic modes use mode 0 as a point of departure.
|
---|
686 | * -perm -mode All of the permission bits mode are set for the file.
|
---|
687 | * -perm +mode Any of the permission bits mode are set for the file.
|
---|
688 | */
|
---|
689 | else if (parm == PARM_perm) {
|
---|
690 | action_perm *ap;
|
---|
691 | ap = ALLOC_ACTION(perm);
|
---|
692 | ap->perm_char = arg1[0];
|
---|
693 | arg1 = plus_minus_num(arg1);
|
---|
694 | ap->perm_mask = 0;
|
---|
695 | if (!bb_parse_mode(arg1, &ap->perm_mask))
|
---|
696 | bb_error_msg_and_die("invalid mode: %s", arg1);
|
---|
697 | }
|
---|
698 | #endif
|
---|
699 | #if ENABLE_FEATURE_FIND_MTIME
|
---|
700 | else if (parm == PARM_mtime) {
|
---|
701 | action_mtime *ap;
|
---|
702 | ap = ALLOC_ACTION(mtime);
|
---|
703 | ap->mtime_char = arg1[0];
|
---|
704 | ap->mtime_days = xatoul(plus_minus_num(arg1));
|
---|
705 | }
|
---|
706 | #endif
|
---|
707 | #if ENABLE_FEATURE_FIND_MMIN
|
---|
708 | else if (parm == PARM_mmin) {
|
---|
709 | action_mmin *ap;
|
---|
710 | ap = ALLOC_ACTION(mmin);
|
---|
711 | ap->mmin_char = arg1[0];
|
---|
712 | ap->mmin_mins = xatoul(plus_minus_num(arg1));
|
---|
713 | }
|
---|
714 | #endif
|
---|
715 | #if ENABLE_FEATURE_FIND_NEWER
|
---|
716 | else if (parm == PARM_newer) {
|
---|
717 | struct stat stat_newer;
|
---|
718 | action_newer *ap;
|
---|
719 | ap = ALLOC_ACTION(newer);
|
---|
720 | xstat(arg1, &stat_newer);
|
---|
721 | ap->newer_mtime = stat_newer.st_mtime;
|
---|
722 | }
|
---|
723 | #endif
|
---|
724 | #if ENABLE_FEATURE_FIND_INUM
|
---|
725 | else if (parm == PARM_inum) {
|
---|
726 | action_inum *ap;
|
---|
727 | ap = ALLOC_ACTION(inum);
|
---|
728 | ap->inode_num = xatoul(arg1);
|
---|
729 | }
|
---|
730 | #endif
|
---|
731 | #if ENABLE_FEATURE_FIND_USER
|
---|
732 | else if (parm == PARM_user) {
|
---|
733 | action_user *ap;
|
---|
734 | ap = ALLOC_ACTION(user);
|
---|
735 | ap->uid = bb_strtou(arg1, NULL, 10);
|
---|
736 | if (errno)
|
---|
737 | ap->uid = xuname2uid(arg1);
|
---|
738 | }
|
---|
739 | #endif
|
---|
740 | #if ENABLE_FEATURE_FIND_GROUP
|
---|
741 | else if (parm == PARM_group) {
|
---|
742 | action_group *ap;
|
---|
743 | ap = ALLOC_ACTION(group);
|
---|
744 | ap->gid = bb_strtou(arg1, NULL, 10);
|
---|
745 | if (errno)
|
---|
746 | ap->gid = xgroup2gid(arg1);
|
---|
747 | }
|
---|
748 | #endif
|
---|
749 | #if ENABLE_FEATURE_FIND_SIZE
|
---|
750 | else if (parm == PARM_size) {
|
---|
751 | /* -size n[bckw]: file uses n units of space
|
---|
752 | * b (default): units are 512-byte blocks
|
---|
753 | * c: 1 byte
|
---|
754 | * k: kilobytes
|
---|
755 | * w: 2-byte words
|
---|
756 | */
|
---|
757 | #if ENABLE_LFS
|
---|
758 | #define XATOU_SFX xatoull_sfx
|
---|
759 | #else
|
---|
760 | #define XATOU_SFX xatoul_sfx
|
---|
761 | #endif
|
---|
762 | static const struct suffix_mult find_suffixes[] = {
|
---|
763 | { "c", 1 },
|
---|
764 | { "w", 2 },
|
---|
765 | { "", 512 },
|
---|
766 | { "b", 512 },
|
---|
767 | { "k", 1024 },
|
---|
768 | { }
|
---|
769 | };
|
---|
770 | action_size *ap;
|
---|
771 | ap = ALLOC_ACTION(size);
|
---|
772 | ap->size_char = arg1[0];
|
---|
773 | ap->size = XATOU_SFX(plus_minus_num(arg1), find_suffixes);
|
---|
774 | }
|
---|
775 | #endif
|
---|
776 | #if ENABLE_FEATURE_FIND_CONTEXT
|
---|
777 | else if (parm == PARM_context) {
|
---|
778 | action_context *ap;
|
---|
779 | ap = ALLOC_ACTION(context);
|
---|
780 | ap->context = NULL;
|
---|
781 | /* SELinux headers erroneously declare non-const parameter */
|
---|
782 | if (selinux_raw_to_trans_context((char*)arg1, &ap->context))
|
---|
783 | bb_perror_msg("%s", arg1);
|
---|
784 | }
|
---|
785 | #endif
|
---|
786 | else {
|
---|
787 | bb_error_msg("unrecognized: %s", arg);
|
---|
788 | bb_show_usage();
|
---|
789 | }
|
---|
790 | argv++;
|
---|
791 | }
|
---|
792 | return appp;
|
---|
793 | #undef ALLOC_ACTION
|
---|
794 | }
|
---|
795 |
|
---|
796 |
|
---|
797 | int find_main(int argc, char **argv);
|
---|
798 | int find_main(int argc, char **argv)
|
---|
799 | {
|
---|
800 | static const char options[] ALIGN1 =
|
---|
801 | "-follow\0"
|
---|
802 | USE_FEATURE_FIND_XDEV( "-xdev\0" )
|
---|
803 | USE_FEATURE_FIND_MAXDEPTH("-maxdepth\0")
|
---|
804 | ;
|
---|
805 | enum {
|
---|
806 | OPT_FOLLOW,
|
---|
807 | USE_FEATURE_FIND_XDEV( OPT_XDEV ,)
|
---|
808 | USE_FEATURE_FIND_MAXDEPTH(OPT_MAXDEPTH,)
|
---|
809 | };
|
---|
810 |
|
---|
811 | char *arg;
|
---|
812 | char **argp;
|
---|
813 | int i, firstopt, status = EXIT_SUCCESS;
|
---|
814 | #if ENABLE_FEATURE_FIND_MAXDEPTH
|
---|
815 | int maxdepth = INT_MAX;
|
---|
816 | #endif
|
---|
817 |
|
---|
818 | for (firstopt = 1; firstopt < argc; firstopt++) {
|
---|
819 | if (argv[firstopt][0] == '-')
|
---|
820 | break;
|
---|
821 | if (ENABLE_FEATURE_FIND_NOT && LONE_CHAR(argv[firstopt], '!'))
|
---|
822 | break;
|
---|
823 | #if ENABLE_FEATURE_FIND_PAREN
|
---|
824 | if (LONE_CHAR(argv[firstopt], '('))
|
---|
825 | break;
|
---|
826 | #endif
|
---|
827 | }
|
---|
828 | if (firstopt == 1) {
|
---|
829 | argv[0] = (char*)".";
|
---|
830 | argv--;
|
---|
831 | firstopt++;
|
---|
832 | }
|
---|
833 |
|
---|
834 | /* All options always return true. They always take effect
|
---|
835 | * rather than being processed only when their place in the
|
---|
836 | * expression is reached.
|
---|
837 | * We implement: -follow, -xdev, -maxdepth
|
---|
838 | */
|
---|
839 | /* Process options, and replace then with -a */
|
---|
840 | /* (-a will be ignored by recursive parser later) */
|
---|
841 | argp = &argv[firstopt];
|
---|
842 | while ((arg = argp[0])) {
|
---|
843 | int opt = index_in_strings(options, arg);
|
---|
844 | if (opt == OPT_FOLLOW) {
|
---|
845 | recurse_flags |= ACTION_FOLLOWLINKS;
|
---|
846 | argp[0] = (char*)"-a";
|
---|
847 | }
|
---|
848 | #if ENABLE_FEATURE_FIND_XDEV
|
---|
849 | if (opt == OPT_XDEV) {
|
---|
850 | struct stat stbuf;
|
---|
851 | if (!xdev_count) {
|
---|
852 | xdev_count = firstopt - 1;
|
---|
853 | xdev_dev = xmalloc(xdev_count * sizeof(dev_t));
|
---|
854 | for (i = 1; i < firstopt; i++) {
|
---|
855 | /* not xstat(): shouldn't bomb out on
|
---|
856 | * "find not_exist exist -xdev" */
|
---|
857 | if (stat(argv[i], &stbuf))
|
---|
858 | stbuf.st_dev = -1L;
|
---|
859 | xdev_dev[i-1] = stbuf.st_dev;
|
---|
860 | }
|
---|
861 | }
|
---|
862 | argp[0] = (char*)"-a";
|
---|
863 | }
|
---|
864 | #endif
|
---|
865 | #if ENABLE_FEATURE_FIND_MAXDEPTH
|
---|
866 | if (opt == OPT_MAXDEPTH) {
|
---|
867 | if (!argp[1])
|
---|
868 | bb_show_usage();
|
---|
869 | maxdepth = xatoi_u(argp[1]);
|
---|
870 | argp[0] = (char*)"-a";
|
---|
871 | argp[1] = (char*)"-a";
|
---|
872 | argp++;
|
---|
873 | }
|
---|
874 | #endif
|
---|
875 | argp++;
|
---|
876 | }
|
---|
877 |
|
---|
878 | actions = parse_params(&argv[firstopt]);
|
---|
879 |
|
---|
880 | for (i = 1; i < firstopt; i++) {
|
---|
881 | if (!recursive_action(argv[i],
|
---|
882 | recurse_flags, /* flags */
|
---|
883 | fileAction, /* file action */
|
---|
884 | fileAction, /* dir action */
|
---|
885 | #if ENABLE_FEATURE_FIND_MAXDEPTH
|
---|
886 | /* double cast suppresses
|
---|
887 | * "cast to ptr from int of different size" */
|
---|
888 | (void*)(ptrdiff_t)maxdepth,/* user data */
|
---|
889 | #else
|
---|
890 | NULL, /* user data */
|
---|
891 | #endif
|
---|
892 | 0)) /* depth */
|
---|
893 | status = EXIT_FAILURE;
|
---|
894 | }
|
---|
895 | return status;
|
---|
896 | }
|
---|