[3320] | 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 | {
|
---|
| 396 | return fnmatch(ap->pattern, fileName, 0) == 0;
|
---|
| 397 | }
|
---|
| 398 | #endif
|
---|
| 399 | #if ENABLE_FEATURE_FIND_REGEX
|
---|
| 400 | ACTF(regex)
|
---|
| 401 | {
|
---|
| 402 | regmatch_t match;
|
---|
| 403 | if (regexec(&ap->compiled_pattern, fileName, 1, &match, 0 /*eflags*/))
|
---|
| 404 | return 0; /* no match */
|
---|
| 405 | if (match.rm_so)
|
---|
| 406 | return 0; /* match doesn't start at pos 0 */
|
---|
| 407 | if (fileName[match.rm_eo])
|
---|
| 408 | return 0; /* match doesn't end exactly at end of pathname */
|
---|
| 409 | return 1;
|
---|
| 410 | }
|
---|
| 411 | #endif
|
---|
| 412 | #if ENABLE_FEATURE_FIND_TYPE
|
---|
| 413 | ACTF(type)
|
---|
| 414 | {
|
---|
| 415 | return ((statbuf->st_mode & S_IFMT) == ap->type_mask);
|
---|
| 416 | }
|
---|
| 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 | }
|
---|