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 GPLv2, see file LICENSE in this source tree.
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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 | //applet:IF_FIND(APPLET_NOEXEC(find, find, _BB_DIR_USR_BIN, _BB_SUID_DROP, find))
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57 |
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58 | //kbuild:lib-$(CONFIG_FIND) += find.o
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59 |
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60 | //config:config FIND
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61 | //config: bool "find"
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62 | //config: default y
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63 | //config: help
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64 | //config: find is used to search your system to find specified files.
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65 | //config:
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66 | //config:config FEATURE_FIND_PRINT0
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67 | //config: bool "Enable -print0: NUL-terminated output"
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68 | //config: default y
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69 | //config: depends on FIND
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70 | //config: help
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71 | //config: Causes output names to be separated by a NUL character
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72 | //config: rather than a newline. This allows names that contain
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73 | //config: newlines and other whitespace to be more easily
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74 | //config: interpreted by other programs.
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75 | //config:
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76 | //config:config FEATURE_FIND_MTIME
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77 | //config: bool "Enable -mtime: modified time matching"
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78 | //config: default y
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79 | //config: depends on FIND
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80 | //config: help
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81 | //config: Allow searching based on the modification time of
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82 | //config: files, in days.
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83 | //config:
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84 | //config:config FEATURE_FIND_MMIN
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85 | //config: bool "Enable -mmin: modified time matching by minutes"
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86 | //config: default y
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87 | //config: depends on FIND
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88 | //config: help
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89 | //config: Allow searching based on the modification time of
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90 | //config: files, in minutes.
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91 | //config:
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92 | //config:config FEATURE_FIND_PERM
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93 | //config: bool "Enable -perm: permissions matching"
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94 | //config: default y
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95 | //config: depends on FIND
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96 | //config: help
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97 | //config: Enable searching based on file permissions.
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98 | //config:
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99 | //config:config FEATURE_FIND_TYPE
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100 | //config: bool "Enable -type: file type matching (file/dir/link/...)"
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101 | //config: default y
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102 | //config: depends on FIND
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103 | //config: help
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104 | //config: Enable searching based on file type (file,
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105 | //config: directory, socket, device, etc.).
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106 | //config:
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107 | //config:config FEATURE_FIND_XDEV
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108 | //config: bool "Enable -xdev: 'stay in filesystem'"
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109 | //config: default y
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110 | //config: depends on FIND
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111 | //config: help
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112 | //config: This option allows find to restrict searches to a single filesystem.
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113 | //config:
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114 | //config:config FEATURE_FIND_MAXDEPTH
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115 | //config: bool "Enable -maxdepth N"
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116 | //config: default y
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117 | //config: depends on FIND
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118 | //config: help
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119 | //config: This option enables -maxdepth N option.
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120 | //config:
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121 | //config:config FEATURE_FIND_NEWER
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122 | //config: bool "Enable -newer: compare file modification times"
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123 | //config: default y
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124 | //config: depends on FIND
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125 | //config: help
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126 | //config: Support the 'find -newer' option for finding any files which have
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127 | //config: a modified time that is more recent than the specified FILE.
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128 | //config:
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129 | //config:config FEATURE_FIND_INUM
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130 | //config: bool "Enable -inum: inode number matching"
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131 | //config: default y
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132 | //config: depends on FIND
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133 | //config: help
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134 | //config: Support the 'find -inum' option for searching by inode number.
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135 | //config:
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136 | //config:config FEATURE_FIND_EXEC
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137 | //config: bool "Enable -exec: execute commands"
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138 | //config: default y
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139 | //config: depends on FIND
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140 | //config: help
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141 | //config: Support the 'find -exec' option for executing commands based upon
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142 | //config: the files matched.
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143 | //config:
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144 | //config:config FEATURE_FIND_USER
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145 | //config: bool "Enable -user: username/uid matching"
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146 | //config: default y
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147 | //config: depends on FIND
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148 | //config: help
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149 | //config: Support the 'find -user' option for searching by username or uid.
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150 | //config:
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151 | //config:config FEATURE_FIND_GROUP
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152 | //config: bool "Enable -group: group/gid matching"
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153 | //config: default y
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154 | //config: depends on FIND
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155 | //config: help
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156 | //config: Support the 'find -group' option for searching by group name or gid.
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157 | //config:
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158 | //config:config FEATURE_FIND_NOT
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159 | //config: bool "Enable the 'not' (!) operator"
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160 | //config: default y
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161 | //config: depends on FIND
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162 | //config: help
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163 | //config: Support the '!' operator to invert the test results.
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164 | //config: If 'Enable full-blown desktop' is enabled, then will also support
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165 | //config: the non-POSIX notation '-not'.
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166 | //config:
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167 | //config:config FEATURE_FIND_DEPTH
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168 | //config: bool "Enable -depth"
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169 | //config: default y
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170 | //config: depends on FIND
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171 | //config: help
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172 | //config: Process each directory's contents before the directory itself.
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173 | //config:
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174 | //config:config FEATURE_FIND_PAREN
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175 | //config: bool "Enable parens in options"
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176 | //config: default y
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177 | //config: depends on FIND
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178 | //config: help
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179 | //config: Enable usage of parens '(' to specify logical order of arguments.
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180 | //config:
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181 | //config:config FEATURE_FIND_SIZE
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182 | //config: bool "Enable -size: file size matching"
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183 | //config: default y
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184 | //config: depends on FIND
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185 | //config: help
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186 | //config: Support the 'find -size' option for searching by file size.
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187 | //config:
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188 | //config:config FEATURE_FIND_PRUNE
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189 | //config: bool "Enable -prune: exclude subdirectories"
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190 | //config: default y
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191 | //config: depends on FIND
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192 | //config: help
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193 | //config: If the file is a directory, dont descend into it. Useful for
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194 | //config: exclusion .svn and CVS directories.
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195 | //config:
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196 | //config:config FEATURE_FIND_DELETE
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197 | //config: bool "Enable -delete: delete files/dirs"
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198 | //config: default y
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199 | //config: depends on FIND && FEATURE_FIND_DEPTH
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200 | //config: help
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201 | //config: Support the 'find -delete' option for deleting files and directories.
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202 | //config: WARNING: This option can do much harm if used wrong. Busybox will not
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203 | //config: try to protect the user from doing stupid things. Use with care.
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204 | //config:
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205 | //config:config FEATURE_FIND_PATH
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206 | //config: bool "Enable -path: match pathname with shell pattern"
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207 | //config: default y
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208 | //config: depends on FIND
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209 | //config: help
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210 | //config: The -path option matches whole pathname instead of just filename.
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211 | //config:
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212 | //config:config FEATURE_FIND_REGEX
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213 | //config: bool "Enable -regex: match pathname with regex"
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214 | //config: default y
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215 | //config: depends on FIND
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216 | //config: help
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217 | //config: The -regex option matches whole pathname against regular expression.
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218 | //config:
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219 | //config:config FEATURE_FIND_CONTEXT
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220 | //config: bool "Enable -context: security context matching"
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221 | //config: default n
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222 | //config: depends on FIND && SELINUX
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223 | //config: help
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224 | //config: Support the 'find -context' option for matching security context.
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225 | //config:
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226 | //config:config FEATURE_FIND_LINKS
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227 | //config: bool "Enable -links: link count matching"
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228 | //config: default y
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229 | //config: depends on FIND
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230 | //config: help
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231 | //config: Support the 'find -links' option for matching number of links.
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232 |
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233 | #include <fnmatch.h>
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234 | #include "libbb.h"
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235 | #if ENABLE_FEATURE_FIND_REGEX
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236 | #include "xregex.h"
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237 | #endif
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238 |
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239 | /* This is a NOEXEC applet. Be very careful! */
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240 |
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241 |
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242 | typedef int (*action_fp)(const char *fileName, const struct stat *statbuf, void *) FAST_FUNC;
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243 |
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244 | typedef struct {
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245 | action_fp f;
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246 | #if ENABLE_FEATURE_FIND_NOT
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247 | bool invert;
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248 | #endif
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249 | } action;
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250 |
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251 | #define ACTS(name, ...) typedef struct { action a; __VA_ARGS__ } action_##name;
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252 | #define ACTF(name) \
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253 | static int FAST_FUNC func_##name(const char *fileName UNUSED_PARAM, \
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254 | const struct stat *statbuf UNUSED_PARAM, \
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255 | action_##name* ap UNUSED_PARAM)
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256 |
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257 | ACTS(print)
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258 | ACTS(name, const char *pattern; bool iname;)
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259 | IF_FEATURE_FIND_PATH( ACTS(path, const char *pattern;))
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260 | IF_FEATURE_FIND_REGEX( ACTS(regex, regex_t compiled_pattern;))
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261 | IF_FEATURE_FIND_PRINT0( ACTS(print0))
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262 | IF_FEATURE_FIND_TYPE( ACTS(type, int type_mask;))
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263 | IF_FEATURE_FIND_PERM( ACTS(perm, char perm_char; mode_t perm_mask;))
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264 | IF_FEATURE_FIND_MTIME( ACTS(mtime, char mtime_char; unsigned mtime_days;))
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265 | IF_FEATURE_FIND_MMIN( ACTS(mmin, char mmin_char; unsigned mmin_mins;))
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266 | IF_FEATURE_FIND_NEWER( ACTS(newer, time_t newer_mtime;))
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267 | IF_FEATURE_FIND_INUM( ACTS(inum, ino_t inode_num;))
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268 | IF_FEATURE_FIND_USER( ACTS(user, uid_t uid;))
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269 | IF_FEATURE_FIND_SIZE( ACTS(size, char size_char; off_t size;))
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270 | IF_FEATURE_FIND_CONTEXT(ACTS(context, security_context_t context;))
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271 | IF_FEATURE_FIND_PAREN( ACTS(paren, action ***subexpr;))
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272 | IF_FEATURE_FIND_PRUNE( ACTS(prune))
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273 | IF_FEATURE_FIND_DELETE( ACTS(delete))
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274 | IF_FEATURE_FIND_EXEC( ACTS(exec, char **exec_argv; unsigned *subst_count; int exec_argc;))
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275 | IF_FEATURE_FIND_GROUP( ACTS(group, gid_t gid;))
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276 | IF_FEATURE_FIND_LINKS( ACTS(links, char links_char; int links_count;))
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277 |
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278 | struct globals {
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279 | IF_FEATURE_FIND_XDEV(dev_t *xdev_dev;)
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280 | IF_FEATURE_FIND_XDEV(int xdev_count;)
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281 | action ***actions;
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282 | bool need_print;
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283 | recurse_flags_t recurse_flags;
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284 | } FIX_ALIASING;
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285 | #define G (*(struct globals*)&bb_common_bufsiz1)
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286 | #define INIT_G() do { \
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287 | struct G_sizecheck { \
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288 | char G_sizecheck[sizeof(G) > COMMON_BUFSIZE ? -1 : 1]; \
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289 | }; \
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290 | /* we have to zero it out because of NOEXEC */ \
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291 | memset(&G, 0, offsetof(struct globals, need_print)); \
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292 | G.need_print = 1; \
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293 | G.recurse_flags = ACTION_RECURSE; \
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294 | } while (0)
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295 |
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296 | #if ENABLE_FEATURE_FIND_EXEC
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297 | static unsigned count_subst(const char *str)
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298 | {
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299 | unsigned count = 0;
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300 | while ((str = strstr(str, "{}")) != NULL) {
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301 | count++;
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302 | str++;
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303 | }
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304 | return count;
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305 | }
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306 |
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307 |
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308 | static char* subst(const char *src, unsigned count, const char* filename)
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309 | {
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310 | char *buf, *dst, *end;
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311 | size_t flen = strlen(filename);
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312 | /* we replace each '{}' with filename: growth by strlen-2 */
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313 | buf = dst = xmalloc(strlen(src) + count*(flen-2) + 1);
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314 | while ((end = strstr(src, "{}"))) {
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315 | memcpy(dst, src, end - src);
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316 | dst += end - src;
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317 | src = end + 2;
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318 | memcpy(dst, filename, flen);
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319 | dst += flen;
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320 | }
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321 | strcpy(dst, src);
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322 | return buf;
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323 | }
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324 | #endif
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325 |
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326 | /* Return values of ACTFs ('action functions') are a bit mask:
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327 | * bit 1=1: prune (use SKIP constant for setting it)
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328 | * bit 0=1: matched successfully (TRUE)
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329 | */
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330 |
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331 | static int exec_actions(action ***appp, const char *fileName, const struct stat *statbuf)
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332 | {
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333 | int cur_group;
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334 | int cur_action;
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335 | int rc = 0;
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336 | action **app, *ap;
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337 |
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338 | /* "action group" is a set of actions ANDed together.
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339 | * groups are ORed together.
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340 | * We simply evaluate each group until we find one in which all actions
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341 | * succeed. */
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342 |
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343 | /* -prune is special: if it is encountered, then we won't
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344 | * descend into current directory. It doesn't matter whether
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345 | * action group (in which -prune sits) will succeed or not:
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346 | * find * -prune -name 'f*' -o -name 'm*' -- prunes every dir
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347 | * find * -name 'f*' -o -prune -name 'm*' -- prunes all dirs
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348 | * not starting with 'f' */
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349 |
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350 | /* We invert TRUE bit (bit 0). Now 1 there means 'failure'.
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351 | * and bitwise OR in "rc |= TRUE ^ ap->f()" will:
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352 | * (1) make SKIP (-prune) bit stick; and (2) detect 'failure'.
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353 | * On return, bit is restored. */
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354 |
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355 | cur_group = -1;
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356 | while ((app = appp[++cur_group]) != NULL) {
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357 | rc &= ~TRUE; /* 'success' so far, clear TRUE bit */
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358 | cur_action = -1;
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359 | while (1) {
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360 | ap = app[++cur_action];
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361 | if (!ap) /* all actions in group were successful */
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362 | return rc ^ TRUE; /* restore TRUE bit */
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363 | rc |= TRUE ^ ap->f(fileName, statbuf, ap);
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364 | #if ENABLE_FEATURE_FIND_NOT
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365 | if (ap->invert) rc ^= TRUE;
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366 | #endif
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367 | if (rc & TRUE) /* current group failed, try next */
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368 | break;
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369 | }
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370 | }
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371 | return rc ^ TRUE; /* restore TRUE bit */
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372 | }
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373 |
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374 |
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375 | ACTF(name)
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376 | {
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377 | const char *tmp = bb_basename(fileName);
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378 | if (tmp != fileName && *tmp == '\0') {
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379 | /* "foo/bar/". Oh no... go back to 'b' */
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380 | tmp--;
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381 | while (tmp != fileName && *--tmp != '/')
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382 | continue;
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383 | if (*tmp == '/')
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384 | tmp++;
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385 | }
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386 | /* Was using FNM_PERIOD flag too,
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387 | * but somewhere between 4.1.20 and 4.4.0 GNU find stopped using it.
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388 | * find -name '*foo' should match .foo too:
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389 | */
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390 | return fnmatch(ap->pattern, tmp, (ap->iname ? FNM_CASEFOLD : 0)) == 0;
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391 | }
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392 |
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393 | #if ENABLE_FEATURE_FIND_PATH
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394 | ACTF(path)
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395 | {
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396 | return fnmatch(ap->pattern, fileName, 0) == 0;
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397 | }
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398 | #endif
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399 | #if ENABLE_FEATURE_FIND_REGEX
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400 | ACTF(regex)
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401 | {
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402 | regmatch_t match;
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403 | if (regexec(&ap->compiled_pattern, fileName, 1, &match, 0 /*eflags*/))
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404 | return 0; /* no match */
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405 | if (match.rm_so)
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406 | return 0; /* match doesn't start at pos 0 */
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407 | if (fileName[match.rm_eo])
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408 | return 0; /* match doesn't end exactly at end of pathname */
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409 | return 1;
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410 | }
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411 | #endif
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412 | #if ENABLE_FEATURE_FIND_TYPE
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413 | ACTF(type)
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414 | {
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415 | return ((statbuf->st_mode & S_IFMT) == ap->type_mask);
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416 | }
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417 | #endif
|
---|
418 | #if ENABLE_FEATURE_FIND_PERM
|
---|
419 | ACTF(perm)
|
---|
420 | {
|
---|
421 | /* -perm +mode: at least one of perm_mask bits are set */
|
---|
422 | if (ap->perm_char == '+')
|
---|
423 | return (statbuf->st_mode & ap->perm_mask) != 0;
|
---|
424 | /* -perm -mode: all of perm_mask are set */
|
---|
425 | if (ap->perm_char == '-')
|
---|
426 | return (statbuf->st_mode & ap->perm_mask) == ap->perm_mask;
|
---|
427 | /* -perm mode: file mode must match perm_mask */
|
---|
428 | return (statbuf->st_mode & 07777) == ap->perm_mask;
|
---|
429 | }
|
---|
430 | #endif
|
---|
431 | #if ENABLE_FEATURE_FIND_MTIME
|
---|
432 | ACTF(mtime)
|
---|
433 | {
|
---|
434 | time_t file_age = time(NULL) - statbuf->st_mtime;
|
---|
435 | time_t mtime_secs = ap->mtime_days * 24*60*60;
|
---|
436 | if (ap->mtime_char == '+')
|
---|
437 | return file_age >= mtime_secs + 24*60*60;
|
---|
438 | if (ap->mtime_char == '-')
|
---|
439 | return file_age < mtime_secs;
|
---|
440 | /* just numeric mtime */
|
---|
441 | return file_age >= mtime_secs && file_age < (mtime_secs + 24*60*60);
|
---|
442 | }
|
---|
443 | #endif
|
---|
444 | #if ENABLE_FEATURE_FIND_MMIN
|
---|
445 | ACTF(mmin)
|
---|
446 | {
|
---|
447 | time_t file_age = time(NULL) - statbuf->st_mtime;
|
---|
448 | time_t mmin_secs = ap->mmin_mins * 60;
|
---|
449 | if (ap->mmin_char == '+')
|
---|
450 | return file_age >= mmin_secs + 60;
|
---|
451 | if (ap->mmin_char == '-')
|
---|
452 | return file_age < mmin_secs;
|
---|
453 | /* just numeric mmin */
|
---|
454 | return file_age >= mmin_secs && file_age < (mmin_secs + 60);
|
---|
455 | }
|
---|
456 | #endif
|
---|
457 | #if ENABLE_FEATURE_FIND_NEWER
|
---|
458 | ACTF(newer)
|
---|
459 | {
|
---|
460 | return (ap->newer_mtime < statbuf->st_mtime);
|
---|
461 | }
|
---|
462 | #endif
|
---|
463 | #if ENABLE_FEATURE_FIND_INUM
|
---|
464 | ACTF(inum)
|
---|
465 | {
|
---|
466 | return (statbuf->st_ino == ap->inode_num);
|
---|
467 | }
|
---|
468 | #endif
|
---|
469 | #if ENABLE_FEATURE_FIND_EXEC
|
---|
470 | ACTF(exec)
|
---|
471 | {
|
---|
472 | int i, rc;
|
---|
473 | #if ENABLE_USE_PORTABLE_CODE
|
---|
474 | char **argv = alloca(sizeof(char*) * (ap->exec_argc + 1));
|
---|
475 | #else /* gcc 4.3.1 generates smaller code: */
|
---|
476 | char *argv[ap->exec_argc + 1];
|
---|
477 | #endif
|
---|
478 | for (i = 0; i < ap->exec_argc; i++)
|
---|
479 | argv[i] = subst(ap->exec_argv[i], ap->subst_count[i], fileName);
|
---|
480 | argv[i] = NULL; /* terminate the list */
|
---|
481 |
|
---|
482 | rc = spawn_and_wait(argv);
|
---|
483 | if (rc < 0)
|
---|
484 | bb_simple_perror_msg(argv[0]);
|
---|
485 |
|
---|
486 | i = 0;
|
---|
487 | while (argv[i])
|
---|
488 | free(argv[i++]);
|
---|
489 | return rc == 0; /* return 1 if exitcode 0 */
|
---|
490 | }
|
---|
491 | #endif
|
---|
492 | #if ENABLE_FEATURE_FIND_USER
|
---|
493 | ACTF(user)
|
---|
494 | {
|
---|
495 | return (statbuf->st_uid == ap->uid);
|
---|
496 | }
|
---|
497 | #endif
|
---|
498 | #if ENABLE_FEATURE_FIND_GROUP
|
---|
499 | ACTF(group)
|
---|
500 | {
|
---|
501 | return (statbuf->st_gid == ap->gid);
|
---|
502 | }
|
---|
503 | #endif
|
---|
504 | #if ENABLE_FEATURE_FIND_PRINT0
|
---|
505 | ACTF(print0)
|
---|
506 | {
|
---|
507 | printf("%s%c", fileName, '\0');
|
---|
508 | return TRUE;
|
---|
509 | }
|
---|
510 | #endif
|
---|
511 | ACTF(print)
|
---|
512 | {
|
---|
513 | puts(fileName);
|
---|
514 | return TRUE;
|
---|
515 | }
|
---|
516 | #if ENABLE_FEATURE_FIND_PAREN
|
---|
517 | ACTF(paren)
|
---|
518 | {
|
---|
519 | return exec_actions(ap->subexpr, fileName, statbuf);
|
---|
520 | }
|
---|
521 | #endif
|
---|
522 | #if ENABLE_FEATURE_FIND_SIZE
|
---|
523 | ACTF(size)
|
---|
524 | {
|
---|
525 | if (ap->size_char == '+')
|
---|
526 | return statbuf->st_size > ap->size;
|
---|
527 | if (ap->size_char == '-')
|
---|
528 | return statbuf->st_size < ap->size;
|
---|
529 | return statbuf->st_size == ap->size;
|
---|
530 | }
|
---|
531 | #endif
|
---|
532 | #if ENABLE_FEATURE_FIND_PRUNE
|
---|
533 | /*
|
---|
534 | * -prune: if -depth is not given, return true and do not descend
|
---|
535 | * current dir; if -depth is given, return false with no effect.
|
---|
536 | * Example:
|
---|
537 | * find dir -name 'asm-*' -prune -o -name '*.[chS]' -print
|
---|
538 | */
|
---|
539 | ACTF(prune)
|
---|
540 | {
|
---|
541 | return SKIP + TRUE;
|
---|
542 | }
|
---|
543 | #endif
|
---|
544 | #if ENABLE_FEATURE_FIND_DELETE
|
---|
545 | ACTF(delete)
|
---|
546 | {
|
---|
547 | int rc;
|
---|
548 | if (S_ISDIR(statbuf->st_mode)) {
|
---|
549 | rc = rmdir(fileName);
|
---|
550 | } else {
|
---|
551 | rc = unlink(fileName);
|
---|
552 | }
|
---|
553 | if (rc < 0)
|
---|
554 | bb_simple_perror_msg(fileName);
|
---|
555 | return TRUE;
|
---|
556 | }
|
---|
557 | #endif
|
---|
558 | #if ENABLE_FEATURE_FIND_CONTEXT
|
---|
559 | ACTF(context)
|
---|
560 | {
|
---|
561 | security_context_t con;
|
---|
562 | int rc;
|
---|
563 |
|
---|
564 | if (G.recurse_flags & ACTION_FOLLOWLINKS) {
|
---|
565 | rc = getfilecon(fileName, &con);
|
---|
566 | } else {
|
---|
567 | rc = lgetfilecon(fileName, &con);
|
---|
568 | }
|
---|
569 | if (rc < 0)
|
---|
570 | return FALSE;
|
---|
571 | rc = strcmp(ap->context, con);
|
---|
572 | freecon(con);
|
---|
573 | return rc == 0;
|
---|
574 | }
|
---|
575 | #endif
|
---|
576 | #if ENABLE_FEATURE_FIND_LINKS
|
---|
577 | ACTF(links)
|
---|
578 | {
|
---|
579 | switch(ap->links_char) {
|
---|
580 | case '-' : return (statbuf->st_nlink < ap->links_count);
|
---|
581 | case '+' : return (statbuf->st_nlink > ap->links_count);
|
---|
582 | default: return (statbuf->st_nlink == ap->links_count);
|
---|
583 | }
|
---|
584 | }
|
---|
585 | #endif
|
---|
586 |
|
---|
587 | static int FAST_FUNC fileAction(const char *fileName,
|
---|
588 | struct stat *statbuf,
|
---|
589 | void *userData IF_NOT_FEATURE_FIND_MAXDEPTH(UNUSED_PARAM),
|
---|
590 | int depth IF_NOT_FEATURE_FIND_MAXDEPTH(UNUSED_PARAM))
|
---|
591 | {
|
---|
592 | int r;
|
---|
593 | #if ENABLE_FEATURE_FIND_MAXDEPTH
|
---|
594 | #define minmaxdepth ((int*)userData)
|
---|
595 |
|
---|
596 | if (depth < minmaxdepth[0])
|
---|
597 | return TRUE; /* skip this, continue recursing */
|
---|
598 | if (depth > minmaxdepth[1])
|
---|
599 | return SKIP; /* stop recursing */
|
---|
600 | #endif
|
---|
601 |
|
---|
602 | r = exec_actions(G.actions, fileName, statbuf);
|
---|
603 | /* Had no explicit -print[0] or -exec? then print */
|
---|
604 | if ((r & TRUE) && G.need_print)
|
---|
605 | puts(fileName);
|
---|
606 |
|
---|
607 | #if ENABLE_FEATURE_FIND_MAXDEPTH
|
---|
608 | if (S_ISDIR(statbuf->st_mode)) {
|
---|
609 | if (depth == minmaxdepth[1])
|
---|
610 | return SKIP;
|
---|
611 | }
|
---|
612 | #endif
|
---|
613 | #if ENABLE_FEATURE_FIND_XDEV
|
---|
614 | /* -xdev stops on mountpoints, but AFTER mountpoit itself
|
---|
615 | * is processed as usual */
|
---|
616 | if (S_ISDIR(statbuf->st_mode)) {
|
---|
617 | if (G.xdev_count) {
|
---|
618 | int i;
|
---|
619 | for (i = 0; i < G.xdev_count; i++) {
|
---|
620 | if (G.xdev_dev[i] == statbuf->st_dev)
|
---|
621 | goto found;
|
---|
622 | }
|
---|
623 | return SKIP;
|
---|
624 | found: ;
|
---|
625 | }
|
---|
626 | }
|
---|
627 | #endif
|
---|
628 |
|
---|
629 | /* Cannot return 0: our caller, recursive_action(),
|
---|
630 | * will perror() and skip dirs (if called on dir) */
|
---|
631 | return (r & SKIP) ? SKIP : TRUE;
|
---|
632 | #undef minmaxdepth
|
---|
633 | }
|
---|
634 |
|
---|
635 |
|
---|
636 | #if ENABLE_FEATURE_FIND_TYPE
|
---|
637 | static int find_type(const char *type)
|
---|
638 | {
|
---|
639 | int mask = 0;
|
---|
640 |
|
---|
641 | if (*type == 'b')
|
---|
642 | mask = S_IFBLK;
|
---|
643 | else if (*type == 'c')
|
---|
644 | mask = S_IFCHR;
|
---|
645 | else if (*type == 'd')
|
---|
646 | mask = S_IFDIR;
|
---|
647 | else if (*type == 'p')
|
---|
648 | mask = S_IFIFO;
|
---|
649 | else if (*type == 'f')
|
---|
650 | mask = S_IFREG;
|
---|
651 | else if (*type == 'l')
|
---|
652 | mask = S_IFLNK;
|
---|
653 | else if (*type == 's')
|
---|
654 | mask = S_IFSOCK;
|
---|
655 |
|
---|
656 | if (mask == 0 || type[1] != '\0')
|
---|
657 | bb_error_msg_and_die(bb_msg_invalid_arg, type, "-type");
|
---|
658 |
|
---|
659 | return mask;
|
---|
660 | }
|
---|
661 | #endif
|
---|
662 |
|
---|
663 | #if ENABLE_FEATURE_FIND_PERM \
|
---|
664 | || ENABLE_FEATURE_FIND_MTIME || ENABLE_FEATURE_FIND_MMIN \
|
---|
665 | || ENABLE_FEATURE_FIND_SIZE || ENABLE_FEATURE_FIND_LINKS
|
---|
666 | static const char* plus_minus_num(const char* str)
|
---|
667 | {
|
---|
668 | if (*str == '-' || *str == '+')
|
---|
669 | str++;
|
---|
670 | return str;
|
---|
671 | }
|
---|
672 | #endif
|
---|
673 |
|
---|
674 | static action*** parse_params(char **argv)
|
---|
675 | {
|
---|
676 | enum {
|
---|
677 | PARM_a ,
|
---|
678 | PARM_o ,
|
---|
679 | IF_FEATURE_FIND_NOT( PARM_char_not ,)
|
---|
680 | #if ENABLE_DESKTOP
|
---|
681 | PARM_and ,
|
---|
682 | PARM_or ,
|
---|
683 | IF_FEATURE_FIND_NOT( PARM_not ,)
|
---|
684 | #endif
|
---|
685 | PARM_print ,
|
---|
686 | IF_FEATURE_FIND_PRINT0( PARM_print0 ,)
|
---|
687 | IF_FEATURE_FIND_DEPTH( PARM_depth ,)
|
---|
688 | IF_FEATURE_FIND_PRUNE( PARM_prune ,)
|
---|
689 | IF_FEATURE_FIND_DELETE( PARM_delete ,)
|
---|
690 | IF_FEATURE_FIND_EXEC( PARM_exec ,)
|
---|
691 | IF_FEATURE_FIND_PAREN( PARM_char_brace,)
|
---|
692 | /* All options starting from here require argument */
|
---|
693 | PARM_name ,
|
---|
694 | PARM_iname ,
|
---|
695 | IF_FEATURE_FIND_PATH( PARM_path ,)
|
---|
696 | IF_FEATURE_FIND_REGEX( PARM_regex ,)
|
---|
697 | IF_FEATURE_FIND_TYPE( PARM_type ,)
|
---|
698 | IF_FEATURE_FIND_PERM( PARM_perm ,)
|
---|
699 | IF_FEATURE_FIND_MTIME( PARM_mtime ,)
|
---|
700 | IF_FEATURE_FIND_MMIN( PARM_mmin ,)
|
---|
701 | IF_FEATURE_FIND_NEWER( PARM_newer ,)
|
---|
702 | IF_FEATURE_FIND_INUM( PARM_inum ,)
|
---|
703 | IF_FEATURE_FIND_USER( PARM_user ,)
|
---|
704 | IF_FEATURE_FIND_GROUP( PARM_group ,)
|
---|
705 | IF_FEATURE_FIND_SIZE( PARM_size ,)
|
---|
706 | IF_FEATURE_FIND_CONTEXT(PARM_context ,)
|
---|
707 | IF_FEATURE_FIND_LINKS( PARM_links ,)
|
---|
708 | };
|
---|
709 |
|
---|
710 | static const char params[] ALIGN1 =
|
---|
711 | "-a\0"
|
---|
712 | "-o\0"
|
---|
713 | IF_FEATURE_FIND_NOT( "!\0" )
|
---|
714 | #if ENABLE_DESKTOP
|
---|
715 | "-and\0"
|
---|
716 | "-or\0"
|
---|
717 | IF_FEATURE_FIND_NOT( "-not\0" )
|
---|
718 | #endif
|
---|
719 | "-print\0"
|
---|
720 | IF_FEATURE_FIND_PRINT0( "-print0\0" )
|
---|
721 | IF_FEATURE_FIND_DEPTH( "-depth\0" )
|
---|
722 | IF_FEATURE_FIND_PRUNE( "-prune\0" )
|
---|
723 | IF_FEATURE_FIND_DELETE( "-delete\0" )
|
---|
724 | IF_FEATURE_FIND_EXEC( "-exec\0" )
|
---|
725 | IF_FEATURE_FIND_PAREN( "(\0" )
|
---|
726 | /* All options starting from here require argument */
|
---|
727 | "-name\0"
|
---|
728 | "-iname\0"
|
---|
729 | IF_FEATURE_FIND_PATH( "-path\0" )
|
---|
730 | IF_FEATURE_FIND_REGEX( "-regex\0" )
|
---|
731 | IF_FEATURE_FIND_TYPE( "-type\0" )
|
---|
732 | IF_FEATURE_FIND_PERM( "-perm\0" )
|
---|
733 | IF_FEATURE_FIND_MTIME( "-mtime\0" )
|
---|
734 | IF_FEATURE_FIND_MMIN( "-mmin\0" )
|
---|
735 | IF_FEATURE_FIND_NEWER( "-newer\0" )
|
---|
736 | IF_FEATURE_FIND_INUM( "-inum\0" )
|
---|
737 | IF_FEATURE_FIND_USER( "-user\0" )
|
---|
738 | IF_FEATURE_FIND_GROUP( "-group\0" )
|
---|
739 | IF_FEATURE_FIND_SIZE( "-size\0" )
|
---|
740 | IF_FEATURE_FIND_CONTEXT("-context\0")
|
---|
741 | IF_FEATURE_FIND_LINKS( "-links\0" )
|
---|
742 | ;
|
---|
743 |
|
---|
744 | action*** appp;
|
---|
745 | unsigned cur_group = 0;
|
---|
746 | unsigned cur_action = 0;
|
---|
747 | IF_FEATURE_FIND_NOT( bool invert_flag = 0; )
|
---|
748 |
|
---|
749 | /* This is the only place in busybox where we use nested function.
|
---|
750 | * So far more standard alternatives were bigger. */
|
---|
751 | /* Auto decl suppresses "func without a prototype" warning: */
|
---|
752 | auto action* alloc_action(int sizeof_struct, action_fp f);
|
---|
753 | action* alloc_action(int sizeof_struct, action_fp f)
|
---|
754 | {
|
---|
755 | action *ap;
|
---|
756 | appp[cur_group] = xrealloc(appp[cur_group], (cur_action+2) * sizeof(*appp));
|
---|
757 | appp[cur_group][cur_action++] = ap = xzalloc(sizeof_struct);
|
---|
758 | appp[cur_group][cur_action] = NULL;
|
---|
759 | ap->f = f;
|
---|
760 | IF_FEATURE_FIND_NOT( ap->invert = invert_flag; )
|
---|
761 | IF_FEATURE_FIND_NOT( invert_flag = 0; )
|
---|
762 | return ap;
|
---|
763 | }
|
---|
764 |
|
---|
765 | #define ALLOC_ACTION(name) (action_##name*)alloc_action(sizeof(action_##name), (action_fp) func_##name)
|
---|
766 |
|
---|
767 | appp = xzalloc(2 * sizeof(appp[0])); /* appp[0],[1] == NULL */
|
---|
768 |
|
---|
769 | /* Actions have side effects and return a true or false value
|
---|
770 | * We implement: -print, -print0, -exec
|
---|
771 | *
|
---|
772 | * The rest are tests.
|
---|
773 | *
|
---|
774 | * Tests and actions are grouped by operators
|
---|
775 | * ( expr ) Force precedence
|
---|
776 | * ! expr True if expr is false
|
---|
777 | * -not expr Same as ! expr
|
---|
778 | * expr1 [-a[nd]] expr2 And; expr2 is not evaluated if expr1 is false
|
---|
779 | * expr1 -o[r] expr2 Or; expr2 is not evaluated if expr1 is true
|
---|
780 | * expr1 , expr2 List; both expr1 and expr2 are always evaluated
|
---|
781 | * We implement: (), -a, -o
|
---|
782 | */
|
---|
783 | while (*argv) {
|
---|
784 | const char *arg = argv[0];
|
---|
785 | int parm = index_in_strings(params, arg);
|
---|
786 | const char *arg1 = argv[1];
|
---|
787 |
|
---|
788 | if (parm >= PARM_name) {
|
---|
789 | /* All options starting from -name require argument */
|
---|
790 | if (!arg1)
|
---|
791 | bb_error_msg_and_die(bb_msg_requires_arg, arg);
|
---|
792 | argv++;
|
---|
793 | }
|
---|
794 |
|
---|
795 | /* We can use big switch() here, but on i386
|
---|
796 | * it doesn't give smaller code. Other arches? */
|
---|
797 |
|
---|
798 | /* --- Operators --- */
|
---|
799 | if (parm == PARM_a IF_DESKTOP(|| parm == PARM_and)) {
|
---|
800 | /* no further special handling required */
|
---|
801 | }
|
---|
802 | else if (parm == PARM_o IF_DESKTOP(|| parm == PARM_or)) {
|
---|
803 | /* start new OR group */
|
---|
804 | cur_group++;
|
---|
805 | appp = xrealloc(appp, (cur_group+2) * sizeof(*appp));
|
---|
806 | /*appp[cur_group] = NULL; - already NULL */
|
---|
807 | appp[cur_group+1] = NULL;
|
---|
808 | cur_action = 0;
|
---|
809 | }
|
---|
810 | #if ENABLE_FEATURE_FIND_NOT
|
---|
811 | else if (parm == PARM_char_not IF_DESKTOP(|| parm == PARM_not)) {
|
---|
812 | /* also handles "find ! ! -name 'foo*'" */
|
---|
813 | invert_flag ^= 1;
|
---|
814 | }
|
---|
815 | #endif
|
---|
816 |
|
---|
817 | /* --- Tests and actions --- */
|
---|
818 | else if (parm == PARM_print) {
|
---|
819 | G.need_print = 0;
|
---|
820 | /* GNU find ignores '!' here: "find ! -print" */
|
---|
821 | IF_FEATURE_FIND_NOT( invert_flag = 0; )
|
---|
822 | (void) ALLOC_ACTION(print);
|
---|
823 | }
|
---|
824 | #if ENABLE_FEATURE_FIND_PRINT0
|
---|
825 | else if (parm == PARM_print0) {
|
---|
826 | G.need_print = 0;
|
---|
827 | IF_FEATURE_FIND_NOT( invert_flag = 0; )
|
---|
828 | (void) ALLOC_ACTION(print0);
|
---|
829 | }
|
---|
830 | #endif
|
---|
831 | #if ENABLE_FEATURE_FIND_DEPTH
|
---|
832 | else if (parm == PARM_depth) {
|
---|
833 | G.recurse_flags |= ACTION_DEPTHFIRST;
|
---|
834 | }
|
---|
835 | #endif
|
---|
836 | #if ENABLE_FEATURE_FIND_PRUNE
|
---|
837 | else if (parm == PARM_prune) {
|
---|
838 | IF_FEATURE_FIND_NOT( invert_flag = 0; )
|
---|
839 | (void) ALLOC_ACTION(prune);
|
---|
840 | }
|
---|
841 | #endif
|
---|
842 | #if ENABLE_FEATURE_FIND_DELETE
|
---|
843 | else if (parm == PARM_delete) {
|
---|
844 | G.need_print = 0;
|
---|
845 | G.recurse_flags |= ACTION_DEPTHFIRST;
|
---|
846 | (void) ALLOC_ACTION(delete);
|
---|
847 | }
|
---|
848 | #endif
|
---|
849 | #if ENABLE_FEATURE_FIND_EXEC
|
---|
850 | else if (parm == PARM_exec) {
|
---|
851 | int i;
|
---|
852 | action_exec *ap;
|
---|
853 | G.need_print = 0;
|
---|
854 | IF_FEATURE_FIND_NOT( invert_flag = 0; )
|
---|
855 | ap = ALLOC_ACTION(exec);
|
---|
856 | ap->exec_argv = ++argv; /* first arg after -exec */
|
---|
857 | /*ap->exec_argc = 0; - ALLOC_ACTION did it */
|
---|
858 | while (1) {
|
---|
859 | if (!*argv) /* did not see ';' or '+' until end */
|
---|
860 | bb_error_msg_and_die(bb_msg_requires_arg, "-exec");
|
---|
861 | // find -exec echo Foo ">{}<" ";"
|
---|
862 | // executes "echo Foo <filename>",
|
---|
863 | // find -exec echo Foo ">{}<" "+"
|
---|
864 | // executes "echo Foo <filename1> <filename2> <filename3>...".
|
---|
865 | // TODO (so far we treat "+" just like ";")
|
---|
866 | if ((argv[0][0] == ';' || argv[0][0] == '+')
|
---|
867 | && argv[0][1] == '\0'
|
---|
868 | ) {
|
---|
869 | break;
|
---|
870 | }
|
---|
871 | argv++;
|
---|
872 | ap->exec_argc++;
|
---|
873 | }
|
---|
874 | if (ap->exec_argc == 0)
|
---|
875 | bb_error_msg_and_die(bb_msg_requires_arg, arg);
|
---|
876 | ap->subst_count = xmalloc(ap->exec_argc * sizeof(int));
|
---|
877 | i = ap->exec_argc;
|
---|
878 | while (i--)
|
---|
879 | ap->subst_count[i] = count_subst(ap->exec_argv[i]);
|
---|
880 | }
|
---|
881 | #endif
|
---|
882 | #if ENABLE_FEATURE_FIND_PAREN
|
---|
883 | else if (parm == PARM_char_brace) {
|
---|
884 | action_paren *ap;
|
---|
885 | char **endarg;
|
---|
886 | unsigned nested = 1;
|
---|
887 |
|
---|
888 | endarg = argv;
|
---|
889 | while (1) {
|
---|
890 | if (!*++endarg)
|
---|
891 | bb_error_msg_and_die("unpaired '('");
|
---|
892 | if (LONE_CHAR(*endarg, '('))
|
---|
893 | nested++;
|
---|
894 | else if (LONE_CHAR(*endarg, ')') && !--nested) {
|
---|
895 | *endarg = NULL;
|
---|
896 | break;
|
---|
897 | }
|
---|
898 | }
|
---|
899 | ap = ALLOC_ACTION(paren);
|
---|
900 | ap->subexpr = parse_params(argv + 1);
|
---|
901 | *endarg = (char*) ")"; /* restore NULLed parameter */
|
---|
902 | argv = endarg;
|
---|
903 | }
|
---|
904 | #endif
|
---|
905 | else if (parm == PARM_name || parm == PARM_iname) {
|
---|
906 | action_name *ap;
|
---|
907 | ap = ALLOC_ACTION(name);
|
---|
908 | ap->pattern = arg1;
|
---|
909 | ap->iname = (parm == PARM_iname);
|
---|
910 | }
|
---|
911 | #if ENABLE_FEATURE_FIND_PATH
|
---|
912 | else if (parm == PARM_path) {
|
---|
913 | action_path *ap;
|
---|
914 | ap = ALLOC_ACTION(path);
|
---|
915 | ap->pattern = arg1;
|
---|
916 | }
|
---|
917 | #endif
|
---|
918 | #if ENABLE_FEATURE_FIND_REGEX
|
---|
919 | else if (parm == PARM_regex) {
|
---|
920 | action_regex *ap;
|
---|
921 | ap = ALLOC_ACTION(regex);
|
---|
922 | xregcomp(&ap->compiled_pattern, arg1, 0 /*cflags*/);
|
---|
923 | }
|
---|
924 | #endif
|
---|
925 | #if ENABLE_FEATURE_FIND_TYPE
|
---|
926 | else if (parm == PARM_type) {
|
---|
927 | action_type *ap;
|
---|
928 | ap = ALLOC_ACTION(type);
|
---|
929 | ap->type_mask = find_type(arg1);
|
---|
930 | }
|
---|
931 | #endif
|
---|
932 | #if ENABLE_FEATURE_FIND_PERM
|
---|
933 | /* -perm mode File's permission bits are exactly mode (octal or symbolic).
|
---|
934 | * Symbolic modes use mode 0 as a point of departure.
|
---|
935 | * -perm -mode All of the permission bits mode are set for the file.
|
---|
936 | * -perm +mode Any of the permission bits mode are set for the file.
|
---|
937 | */
|
---|
938 | else if (parm == PARM_perm) {
|
---|
939 | action_perm *ap;
|
---|
940 | ap = ALLOC_ACTION(perm);
|
---|
941 | ap->perm_char = arg1[0];
|
---|
942 | arg1 = plus_minus_num(arg1);
|
---|
943 | /*ap->perm_mask = 0; - ALLOC_ACTION did it */
|
---|
944 | if (!bb_parse_mode(arg1, &ap->perm_mask))
|
---|
945 | bb_error_msg_and_die("invalid mode '%s'", arg1);
|
---|
946 | }
|
---|
947 | #endif
|
---|
948 | #if ENABLE_FEATURE_FIND_MTIME
|
---|
949 | else if (parm == PARM_mtime) {
|
---|
950 | action_mtime *ap;
|
---|
951 | ap = ALLOC_ACTION(mtime);
|
---|
952 | ap->mtime_char = arg1[0];
|
---|
953 | ap->mtime_days = xatoul(plus_minus_num(arg1));
|
---|
954 | }
|
---|
955 | #endif
|
---|
956 | #if ENABLE_FEATURE_FIND_MMIN
|
---|
957 | else if (parm == PARM_mmin) {
|
---|
958 | action_mmin *ap;
|
---|
959 | ap = ALLOC_ACTION(mmin);
|
---|
960 | ap->mmin_char = arg1[0];
|
---|
961 | ap->mmin_mins = xatoul(plus_minus_num(arg1));
|
---|
962 | }
|
---|
963 | #endif
|
---|
964 | #if ENABLE_FEATURE_FIND_NEWER
|
---|
965 | else if (parm == PARM_newer) {
|
---|
966 | struct stat stat_newer;
|
---|
967 | action_newer *ap;
|
---|
968 | ap = ALLOC_ACTION(newer);
|
---|
969 | xstat(arg1, &stat_newer);
|
---|
970 | ap->newer_mtime = stat_newer.st_mtime;
|
---|
971 | }
|
---|
972 | #endif
|
---|
973 | #if ENABLE_FEATURE_FIND_INUM
|
---|
974 | else if (parm == PARM_inum) {
|
---|
975 | action_inum *ap;
|
---|
976 | ap = ALLOC_ACTION(inum);
|
---|
977 | ap->inode_num = xatoul(arg1);
|
---|
978 | }
|
---|
979 | #endif
|
---|
980 | #if ENABLE_FEATURE_FIND_USER
|
---|
981 | else if (parm == PARM_user) {
|
---|
982 | action_user *ap;
|
---|
983 | ap = ALLOC_ACTION(user);
|
---|
984 | ap->uid = bb_strtou(arg1, NULL, 10);
|
---|
985 | if (errno)
|
---|
986 | ap->uid = xuname2uid(arg1);
|
---|
987 | }
|
---|
988 | #endif
|
---|
989 | #if ENABLE_FEATURE_FIND_GROUP
|
---|
990 | else if (parm == PARM_group) {
|
---|
991 | action_group *ap;
|
---|
992 | ap = ALLOC_ACTION(group);
|
---|
993 | ap->gid = bb_strtou(arg1, NULL, 10);
|
---|
994 | if (errno)
|
---|
995 | ap->gid = xgroup2gid(arg1);
|
---|
996 | }
|
---|
997 | #endif
|
---|
998 | #if ENABLE_FEATURE_FIND_SIZE
|
---|
999 | else if (parm == PARM_size) {
|
---|
1000 | /* -size n[bckw]: file uses n units of space
|
---|
1001 | * b (default): units are 512-byte blocks
|
---|
1002 | * c: 1 byte
|
---|
1003 | * k: kilobytes
|
---|
1004 | * w: 2-byte words
|
---|
1005 | */
|
---|
1006 | #if ENABLE_LFS
|
---|
1007 | #define XATOU_SFX xatoull_sfx
|
---|
1008 | #else
|
---|
1009 | #define XATOU_SFX xatoul_sfx
|
---|
1010 | #endif
|
---|
1011 | static const struct suffix_mult find_suffixes[] = {
|
---|
1012 | { "c", 1 },
|
---|
1013 | { "w", 2 },
|
---|
1014 | { "", 512 },
|
---|
1015 | { "b", 512 },
|
---|
1016 | { "k", 1024 },
|
---|
1017 | { "", 0 }
|
---|
1018 | };
|
---|
1019 | action_size *ap;
|
---|
1020 | ap = ALLOC_ACTION(size);
|
---|
1021 | ap->size_char = arg1[0];
|
---|
1022 | ap->size = XATOU_SFX(plus_minus_num(arg1), find_suffixes);
|
---|
1023 | }
|
---|
1024 | #endif
|
---|
1025 | #if ENABLE_FEATURE_FIND_CONTEXT
|
---|
1026 | else if (parm == PARM_context) {
|
---|
1027 | action_context *ap;
|
---|
1028 | ap = ALLOC_ACTION(context);
|
---|
1029 | /*ap->context = NULL; - ALLOC_ACTION did it */
|
---|
1030 | /* SELinux headers erroneously declare non-const parameter */
|
---|
1031 | if (selinux_raw_to_trans_context((char*)arg1, &ap->context))
|
---|
1032 | bb_simple_perror_msg(arg1);
|
---|
1033 | }
|
---|
1034 | #endif
|
---|
1035 | #if ENABLE_FEATURE_FIND_LINKS
|
---|
1036 | else if (parm == PARM_links) {
|
---|
1037 | action_links *ap;
|
---|
1038 | ap = ALLOC_ACTION(links);
|
---|
1039 | ap->links_char = arg1[0];
|
---|
1040 | ap->links_count = xatoul(plus_minus_num(arg1));
|
---|
1041 | }
|
---|
1042 | #endif
|
---|
1043 | else {
|
---|
1044 | bb_error_msg("unrecognized: %s", arg);
|
---|
1045 | bb_show_usage();
|
---|
1046 | }
|
---|
1047 | argv++;
|
---|
1048 | }
|
---|
1049 | return appp;
|
---|
1050 | #undef ALLOC_ACTION
|
---|
1051 | }
|
---|
1052 |
|
---|
1053 | //usage:#define find_trivial_usage
|
---|
1054 | //usage: "[PATH]... [EXPRESSION]"
|
---|
1055 | //usage:#define find_full_usage "\n\n"
|
---|
1056 | //usage: "Search for files. The default PATH is the current directory,\n"
|
---|
1057 | //usage: "default EXPRESSION is '-print'\n"
|
---|
1058 | //usage: "\nEXPRESSION may consist of:"
|
---|
1059 | //usage: "\n -follow Follow symlinks"
|
---|
1060 | //usage: IF_FEATURE_FIND_XDEV(
|
---|
1061 | //usage: "\n -xdev Don't descend directories on other filesystems"
|
---|
1062 | //usage: )
|
---|
1063 | //usage: IF_FEATURE_FIND_MAXDEPTH(
|
---|
1064 | //usage: "\n -maxdepth N Descend at most N levels. -maxdepth 0 applies"
|
---|
1065 | //usage: "\n tests/actions to command line arguments only"
|
---|
1066 | //usage: )
|
---|
1067 | //usage: "\n -mindepth N Don't act on first N levels"
|
---|
1068 | //usage: "\n -name PATTERN File name (w/o directory name) matches PATTERN"
|
---|
1069 | //usage: "\n -iname PATTERN Case insensitive -name"
|
---|
1070 | //usage: IF_FEATURE_FIND_PATH(
|
---|
1071 | //usage: "\n -path PATTERN Path matches PATTERN"
|
---|
1072 | //usage: )
|
---|
1073 | //usage: IF_FEATURE_FIND_REGEX(
|
---|
1074 | //usage: "\n -regex PATTERN Path matches regex PATTERN"
|
---|
1075 | //usage: )
|
---|
1076 | //usage: IF_FEATURE_FIND_TYPE(
|
---|
1077 | //usage: "\n -type X File type is X (X is one of: f,d,l,b,c,...)"
|
---|
1078 | //usage: )
|
---|
1079 | //usage: IF_FEATURE_FIND_PERM(
|
---|
1080 | //usage: "\n -perm NNN Permissions match any of (+NNN), all of (-NNN),"
|
---|
1081 | //usage: "\n or exactly NNN"
|
---|
1082 | //usage: )
|
---|
1083 | //usage: IF_FEATURE_FIND_MTIME(
|
---|
1084 | //usage: "\n -mtime DAYS Modified time is greater than (+N), less than (-N),"
|
---|
1085 | //usage: "\n or exactly N days"
|
---|
1086 | //usage: )
|
---|
1087 | //usage: IF_FEATURE_FIND_MMIN(
|
---|
1088 | //usage: "\n -mmin MINS Modified time is greater than (+N), less than (-N),"
|
---|
1089 | //usage: "\n or exactly N minutes"
|
---|
1090 | //usage: )
|
---|
1091 | //usage: IF_FEATURE_FIND_NEWER(
|
---|
1092 | //usage: "\n -newer FILE Modified time is more recent than FILE's"
|
---|
1093 | //usage: )
|
---|
1094 | //usage: IF_FEATURE_FIND_INUM(
|
---|
1095 | //usage: "\n -inum N File has inode number N"
|
---|
1096 | //usage: )
|
---|
1097 | //usage: IF_FEATURE_FIND_USER(
|
---|
1098 | //usage: "\n -user NAME File is owned by user NAME (numeric user ID allowed)"
|
---|
1099 | //usage: )
|
---|
1100 | //usage: IF_FEATURE_FIND_GROUP(
|
---|
1101 | //usage: "\n -group NAME File belongs to group NAME (numeric group ID allowed)"
|
---|
1102 | //usage: )
|
---|
1103 | //usage: IF_FEATURE_FIND_DEPTH(
|
---|
1104 | //usage: "\n -depth Process directory name after traversing it"
|
---|
1105 | //usage: )
|
---|
1106 | //usage: IF_FEATURE_FIND_SIZE(
|
---|
1107 | //usage: "\n -size N[bck] File size is N (c:bytes,k:kbytes,b:512 bytes(def.))"
|
---|
1108 | //usage: "\n +/-N: file size is bigger/smaller than N"
|
---|
1109 | //usage: )
|
---|
1110 | //usage: IF_FEATURE_FIND_LINKS(
|
---|
1111 | //usage: "\n -links N Number of links is greater than (+N), less than (-N),"
|
---|
1112 | //usage: "\n or exactly N"
|
---|
1113 | //usage: )
|
---|
1114 | //usage: "\n -print Print (default and assumed)"
|
---|
1115 | //usage: IF_FEATURE_FIND_PRINT0(
|
---|
1116 | //usage: "\n -print0 Delimit output with null characters rather than"
|
---|
1117 | //usage: "\n newlines"
|
---|
1118 | //usage: )
|
---|
1119 | //usage: IF_FEATURE_FIND_CONTEXT(
|
---|
1120 | //usage: "\n -context File has specified security context"
|
---|
1121 | //usage: )
|
---|
1122 | //usage: IF_FEATURE_FIND_EXEC(
|
---|
1123 | //usage: "\n -exec CMD ARG ; Run CMD with all instances of {} replaced by the"
|
---|
1124 | //usage: "\n matching files"
|
---|
1125 | //usage: )
|
---|
1126 | //usage: IF_FEATURE_FIND_PRUNE(
|
---|
1127 | //usage: "\n -prune Stop traversing current subtree"
|
---|
1128 | //usage: )
|
---|
1129 | //usage: IF_FEATURE_FIND_DELETE(
|
---|
1130 | //usage: "\n -delete Delete files, turns on -depth option"
|
---|
1131 | //usage: )
|
---|
1132 | //usage: IF_FEATURE_FIND_PAREN(
|
---|
1133 | //usage: "\n (EXPR) Group an expression"
|
---|
1134 | //usage: )
|
---|
1135 | //usage:
|
---|
1136 | //usage:#define find_example_usage
|
---|
1137 | //usage: "$ find / -name passwd\n"
|
---|
1138 | //usage: "/etc/passwd\n"
|
---|
1139 |
|
---|
1140 | int find_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
1141 | int find_main(int argc UNUSED_PARAM, char **argv)
|
---|
1142 | {
|
---|
1143 | static const char options[] ALIGN1 =
|
---|
1144 | "-follow\0"
|
---|
1145 | IF_FEATURE_FIND_XDEV( "-xdev\0" )
|
---|
1146 | IF_FEATURE_FIND_MAXDEPTH("-mindepth\0""-maxdepth\0")
|
---|
1147 | ;
|
---|
1148 | enum {
|
---|
1149 | OPT_FOLLOW,
|
---|
1150 | IF_FEATURE_FIND_XDEV( OPT_XDEV ,)
|
---|
1151 | IF_FEATURE_FIND_MAXDEPTH(OPT_MINDEPTH,)
|
---|
1152 | };
|
---|
1153 |
|
---|
1154 | char *arg;
|
---|
1155 | char **argp;
|
---|
1156 | int i, firstopt, status = EXIT_SUCCESS;
|
---|
1157 | #if ENABLE_FEATURE_FIND_MAXDEPTH
|
---|
1158 | int minmaxdepth[2] = { 0, INT_MAX };
|
---|
1159 | #else
|
---|
1160 | #define minmaxdepth NULL
|
---|
1161 | #endif
|
---|
1162 |
|
---|
1163 | INIT_G();
|
---|
1164 |
|
---|
1165 | for (firstopt = 1; argv[firstopt]; firstopt++) {
|
---|
1166 | if (argv[firstopt][0] == '-')
|
---|
1167 | break;
|
---|
1168 | if (ENABLE_FEATURE_FIND_NOT && LONE_CHAR(argv[firstopt], '!'))
|
---|
1169 | break;
|
---|
1170 | #if ENABLE_FEATURE_FIND_PAREN
|
---|
1171 | if (LONE_CHAR(argv[firstopt], '('))
|
---|
1172 | break;
|
---|
1173 | #endif
|
---|
1174 | }
|
---|
1175 | if (firstopt == 1) {
|
---|
1176 | argv[0] = (char*)".";
|
---|
1177 | argv--;
|
---|
1178 | firstopt++;
|
---|
1179 | }
|
---|
1180 |
|
---|
1181 | /* All options always return true. They always take effect
|
---|
1182 | * rather than being processed only when their place in the
|
---|
1183 | * expression is reached.
|
---|
1184 | * We implement: -follow, -xdev, -maxdepth
|
---|
1185 | */
|
---|
1186 | /* Process options, and replace then with -a */
|
---|
1187 | /* (-a will be ignored by recursive parser later) */
|
---|
1188 | argp = &argv[firstopt];
|
---|
1189 | while ((arg = argp[0])) {
|
---|
1190 | int opt = index_in_strings(options, arg);
|
---|
1191 | if (opt == OPT_FOLLOW) {
|
---|
1192 | G.recurse_flags |= ACTION_FOLLOWLINKS | ACTION_DANGLING_OK;
|
---|
1193 | argp[0] = (char*)"-a";
|
---|
1194 | }
|
---|
1195 | #if ENABLE_FEATURE_FIND_XDEV
|
---|
1196 | if (opt == OPT_XDEV) {
|
---|
1197 | struct stat stbuf;
|
---|
1198 | if (!G.xdev_count) {
|
---|
1199 | G.xdev_count = firstopt - 1;
|
---|
1200 | G.xdev_dev = xzalloc(G.xdev_count * sizeof(G.xdev_dev[0]));
|
---|
1201 | for (i = 1; i < firstopt; i++) {
|
---|
1202 | /* not xstat(): shouldn't bomb out on
|
---|
1203 | * "find not_exist exist -xdev" */
|
---|
1204 | if (stat(argv[i], &stbuf) == 0)
|
---|
1205 | G.xdev_dev[i-1] = stbuf.st_dev;
|
---|
1206 | /* else G.xdev_dev[i-1] stays 0 and
|
---|
1207 | * won't match any real device dev_t */
|
---|
1208 | }
|
---|
1209 | }
|
---|
1210 | argp[0] = (char*)"-a";
|
---|
1211 | }
|
---|
1212 | #endif
|
---|
1213 | #if ENABLE_FEATURE_FIND_MAXDEPTH
|
---|
1214 | if (opt == OPT_MINDEPTH || opt == OPT_MINDEPTH + 1) {
|
---|
1215 | if (!argp[1])
|
---|
1216 | bb_show_usage();
|
---|
1217 | minmaxdepth[opt - OPT_MINDEPTH] = xatoi_positive(argp[1]);
|
---|
1218 | argp[0] = (char*)"-a";
|
---|
1219 | argp[1] = (char*)"-a";
|
---|
1220 | argp++;
|
---|
1221 | }
|
---|
1222 | #endif
|
---|
1223 | argp++;
|
---|
1224 | }
|
---|
1225 |
|
---|
1226 | G.actions = parse_params(&argv[firstopt]);
|
---|
1227 |
|
---|
1228 | for (i = 1; i < firstopt; i++) {
|
---|
1229 | if (!recursive_action(argv[i],
|
---|
1230 | G.recurse_flags,/* flags */
|
---|
1231 | fileAction, /* file action */
|
---|
1232 | fileAction, /* dir action */
|
---|
1233 | #if ENABLE_FEATURE_FIND_MAXDEPTH
|
---|
1234 | minmaxdepth, /* user data */
|
---|
1235 | #else
|
---|
1236 | NULL, /* user data */
|
---|
1237 | #endif
|
---|
1238 | 0)) /* depth */
|
---|
1239 | status = EXIT_FAILURE;
|
---|
1240 | }
|
---|
1241 | return status;
|
---|
1242 | }
|
---|