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901 lines
23 KiB
C
901 lines
23 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Mini find implementation for busybox
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*
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* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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*
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* Reworked by David Douthitt <n9ubh@callsign.net> and
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* Matt Kraai <kraai@alumni.carnegiemellon.edu>.
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*
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* Licensed under the GPL version 2, see the file LICENSE in this tarball.
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*/
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/* findutils-4.1.20:
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*
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* # find file.txt -exec 'echo {}' '{} {}' ';'
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* find: echo file.txt: No such file or directory
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* # find file.txt -exec 'echo' '{} {}' '; '
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* find: missing argument to `-exec'
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* # find file.txt -exec 'echo {}' '{} {}' ';' junk
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* find: paths must precede expression
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* # find file.txt -exec 'echo {}' '{} {}' ';' junk ';'
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* find: paths must precede expression
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* # find file.txt -exec 'echo' '{} {}' ';'
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* file.txt file.txt
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* (strace: execve("/bin/echo", ["echo", "file.txt file.txt"], [ 30 vars ]))
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* # find file.txt -exec 'echo' '{} {}' ';' -print -exec pwd ';'
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* file.txt file.txt
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* file.txt
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* /tmp
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* # find -name '*.c' -o -name '*.h'
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* [shows files, *.c and *.h intermixed]
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* # find file.txt -name '*f*' -o -name '*t*'
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* file.txt
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* # find file.txt -name '*z*' -o -name '*t*'
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* file.txt
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* # find file.txt -name '*f*' -o -name '*z*'
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* file.txt
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*
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* # find t z -name '*t*' -print -o -name '*z*'
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* t
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* # find t z t z -name '*t*' -o -name '*z*' -print
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* z
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* z
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* # find t z t z '(' -name '*t*' -o -name '*z*' ')' -o -print
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* (no output)
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*/
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/* Testing script
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* ./busybox find "$@" | tee /tmp/bb_find
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* echo ==================
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* /path/to/gnu/find "$@" | tee /tmp/std_find
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* echo ==================
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* diff -u /tmp/std_find /tmp/bb_find && echo Identical
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*/
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#include <fnmatch.h>
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#include "libbb.h"
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#if ENABLE_FEATURE_FIND_REGEX
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#include "xregex.h"
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#endif
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/* This is a NOEXEC applet. Be very careful! */
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USE_FEATURE_FIND_XDEV(static dev_t *xdev_dev;)
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USE_FEATURE_FIND_XDEV(static int xdev_count;)
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typedef int (*action_fp)(const char *fileName, struct stat *statbuf, void *);
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typedef struct {
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action_fp f;
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#if ENABLE_FEATURE_FIND_NOT
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bool invert;
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#endif
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} action;
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#define ACTS(name, arg...) typedef struct { action a; arg; } action_##name;
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#define ACTF(name) static int func_##name(const char *fileName, struct stat *statbuf, action_##name* ap)
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ACTS(print)
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ACTS(name, const char *pattern; bool iname;)
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USE_FEATURE_FIND_PATH( ACTS(path, const char *pattern;))
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USE_FEATURE_FIND_REGEX( ACTS(regex, regex_t compiled_pattern;))
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USE_FEATURE_FIND_PRINT0( ACTS(print0))
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USE_FEATURE_FIND_TYPE( ACTS(type, int type_mask;))
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USE_FEATURE_FIND_PERM( ACTS(perm, char perm_char; mode_t perm_mask;))
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USE_FEATURE_FIND_MTIME( ACTS(mtime, char mtime_char; unsigned mtime_days;))
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USE_FEATURE_FIND_MMIN( ACTS(mmin, char mmin_char; unsigned mmin_mins;))
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USE_FEATURE_FIND_NEWER( ACTS(newer, time_t newer_mtime;))
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USE_FEATURE_FIND_INUM( ACTS(inum, ino_t inode_num;))
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USE_FEATURE_FIND_USER( ACTS(user, uid_t uid;))
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USE_FEATURE_FIND_SIZE( ACTS(size, char size_char; off_t size;))
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USE_FEATURE_FIND_CONTEXT(ACTS(context, security_context_t context;))
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USE_FEATURE_FIND_PAREN( ACTS(paren, action ***subexpr;))
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USE_FEATURE_FIND_PRUNE( ACTS(prune))
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USE_FEATURE_FIND_DELETE( ACTS(delete))
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USE_FEATURE_FIND_EXEC( ACTS(exec, char **exec_argv; unsigned *subst_count; int exec_argc;))
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USE_FEATURE_FIND_GROUP( ACTS(group, gid_t gid;))
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static action ***actions;
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static bool need_print = 1;
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static int recurse_flags = ACTION_RECURSE;
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#if ENABLE_FEATURE_FIND_EXEC
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static unsigned count_subst(const char *str)
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{
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unsigned count = 0;
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while ((str = strstr(str, "{}")) != NULL) {
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count++;
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str++;
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}
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return count;
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}
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static char* subst(const char *src, unsigned count, const char* filename)
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{
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char *buf, *dst, *end;
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size_t flen = strlen(filename);
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/* we replace each '{}' with filename: growth by strlen-2 */
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buf = dst = xmalloc(strlen(src) + count*(flen-2) + 1);
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while ((end = strstr(src, "{}"))) {
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memcpy(dst, src, end - src);
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dst += end - src;
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src = end + 2;
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memcpy(dst, filename, flen);
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dst += flen;
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}
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strcpy(dst, src);
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return buf;
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}
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#endif
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/* Return values of ACTFs ('action functions') are a bit mask:
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* bit 1=1: prune (use SKIP constant for setting it)
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* bit 0=1: matched successfully (TRUE)
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*/
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static int exec_actions(action ***appp, const char *fileName, struct stat *statbuf)
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{
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int cur_group;
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int cur_action;
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int rc = 0;
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action **app, *ap;
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/* "action group" is a set of actions ANDed together.
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* groups are ORed together.
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* We simply evaluate each group until we find one in which all actions
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* succeed. */
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/* -prune is special: if it is encountered, then we won't
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* descend into current directory. It doesn't matter whether
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* action group (in which -prune sits) will succeed or not:
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* find * -prune -name 'f*' -o -name 'm*' -- prunes every dir
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* find * -name 'f*' -o -prune -name 'm*' -- prunes all dirs
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* not starting with 'f' */
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/* We invert TRUE bit (bit 0). Now 1 there means 'failure'.
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* and bitwise OR in "rc |= TRUE ^ ap->f()" will:
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* (1) make SKIP (-prune) bit stick; and (2) detect 'failure'.
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* On return, bit is restored. */
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cur_group = -1;
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while ((app = appp[++cur_group])) {
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rc &= ~TRUE; /* 'success' so far, clear TRUE bit */
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cur_action = -1;
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while (1) {
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ap = app[++cur_action];
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if (!ap) /* all actions in group were successful */
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return rc ^ TRUE; /* restore TRUE bit */
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rc |= TRUE ^ ap->f(fileName, statbuf, ap);
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#if ENABLE_FEATURE_FIND_NOT
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if (ap->invert) rc ^= TRUE;
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#endif
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if (rc & TRUE) /* current group failed, try next */
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break;
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}
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}
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return rc ^ TRUE; /* restore TRUE bit */
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}
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ACTF(name)
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{
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const char *tmp = bb_basename(fileName);
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if (tmp != fileName && !*tmp) { /* "foo/bar/". Oh no... go back to 'b' */
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tmp--;
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while (tmp != fileName && *--tmp != '/')
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continue;
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if (*tmp == '/')
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tmp++;
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}
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return fnmatch(ap->pattern, tmp, FNM_PERIOD | (ap->iname ? FNM_CASEFOLD : 0)) == 0;
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}
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#if ENABLE_FEATURE_FIND_PATH
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ACTF(path)
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{
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return fnmatch(ap->pattern, fileName, 0) == 0;
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}
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#endif
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#if ENABLE_FEATURE_FIND_REGEX
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ACTF(regex)
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{
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regmatch_t match;
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if (regexec(&ap->compiled_pattern, fileName, 1, &match, 0 /*eflags*/))
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return 0; /* no match */
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if (match.rm_so)
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return 0; /* match doesn't start at pos 0 */
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if (fileName[match.rm_eo])
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return 0; /* match doesn't end exactly at end of pathname */
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return 1;
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}
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#endif
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#if ENABLE_FEATURE_FIND_TYPE
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ACTF(type)
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{
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return ((statbuf->st_mode & S_IFMT) == ap->type_mask);
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}
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#endif
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#if ENABLE_FEATURE_FIND_PERM
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ACTF(perm)
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{
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/* -perm +mode: at least one of perm_mask bits are set */
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if (ap->perm_char == '+')
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return (statbuf->st_mode & ap->perm_mask) != 0;
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/* -perm -mode: all of perm_mask are set */
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if (ap->perm_char == '-')
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return (statbuf->st_mode & ap->perm_mask) == ap->perm_mask;
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/* -perm mode: file mode must match perm_mask */
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return (statbuf->st_mode & 07777) == ap->perm_mask;
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}
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#endif
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#if ENABLE_FEATURE_FIND_MTIME
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ACTF(mtime)
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{
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time_t file_age = time(NULL) - statbuf->st_mtime;
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time_t mtime_secs = ap->mtime_days * 24*60*60;
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if (ap->mtime_char == '+')
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return file_age >= mtime_secs + 24*60*60;
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if (ap->mtime_char == '-')
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return file_age < mtime_secs;
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/* just numeric mtime */
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return file_age >= mtime_secs && file_age < (mtime_secs + 24*60*60);
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}
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#endif
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#if ENABLE_FEATURE_FIND_MMIN
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ACTF(mmin)
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{
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time_t file_age = time(NULL) - statbuf->st_mtime;
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time_t mmin_secs = ap->mmin_mins * 60;
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if (ap->mmin_char == '+')
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return file_age >= mmin_secs + 60;
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if (ap->mmin_char == '-')
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return file_age < mmin_secs;
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/* just numeric mmin */
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return file_age >= mmin_secs && file_age < (mmin_secs + 60);
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}
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#endif
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#if ENABLE_FEATURE_FIND_NEWER
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ACTF(newer)
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{
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return (ap->newer_mtime < statbuf->st_mtime);
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}
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#endif
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#if ENABLE_FEATURE_FIND_INUM
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ACTF(inum)
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{
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return (statbuf->st_ino == ap->inode_num);
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}
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#endif
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#if ENABLE_FEATURE_FIND_EXEC
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ACTF(exec)
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{
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int i, rc;
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char *argv[ap->exec_argc + 1];
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for (i = 0; i < ap->exec_argc; i++)
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argv[i] = subst(ap->exec_argv[i], ap->subst_count[i], fileName);
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argv[i] = NULL; /* terminate the list */
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rc = spawn_and_wait(argv);
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if (rc < 0)
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bb_simple_perror_msg(argv[0]);
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i = 0;
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while (argv[i])
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free(argv[i++]);
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return rc == 0; /* return 1 if exitcode 0 */
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}
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#endif
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#if ENABLE_FEATURE_FIND_USER
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ACTF(user)
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{
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return (statbuf->st_uid == ap->uid);
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}
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#endif
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#if ENABLE_FEATURE_FIND_GROUP
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ACTF(group)
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{
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return (statbuf->st_gid == ap->gid);
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}
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#endif
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#if ENABLE_FEATURE_FIND_PRINT0
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ACTF(print0)
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{
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printf("%s%c", fileName, '\0');
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return TRUE;
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}
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#endif
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ACTF(print)
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{
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puts(fileName);
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return TRUE;
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}
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#if ENABLE_FEATURE_FIND_PAREN
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ACTF(paren)
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{
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return exec_actions(ap->subexpr, fileName, statbuf);
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}
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#endif
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#if ENABLE_FEATURE_FIND_SIZE
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ACTF(size)
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{
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if (ap->size_char == '+')
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return statbuf->st_size > ap->size;
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if (ap->size_char == '-')
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return statbuf->st_size < ap->size;
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return statbuf->st_size == ap->size;
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}
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#endif
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#if ENABLE_FEATURE_FIND_PRUNE
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/*
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* -prune: if -depth is not given, return true and do not descend
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* current dir; if -depth is given, return false with no effect.
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* Example:
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* find dir -name 'asm-*' -prune -o -name '*.[chS]' -print
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*/
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ACTF(prune)
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{
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return SKIP + TRUE;
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}
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#endif
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#if ENABLE_FEATURE_FIND_DELETE
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ACTF(delete)
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{
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int rc;
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if (S_ISDIR(statbuf->st_mode)) {
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rc = rmdir(fileName);
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} else {
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rc = unlink(fileName);
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}
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if (rc < 0)
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bb_simple_perror_msg(fileName);
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return TRUE;
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}
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#endif
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#if ENABLE_FEATURE_FIND_CONTEXT
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ACTF(context)
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{
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security_context_t con;
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int rc;
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if (recurse_flags & ACTION_FOLLOWLINKS) {
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rc = getfilecon(fileName, &con);
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} else {
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rc = lgetfilecon(fileName, &con);
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}
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if (rc < 0)
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return FALSE;
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rc = strcmp(ap->context, con);
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freecon(con);
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return rc == 0;
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}
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#endif
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static int fileAction(const char *fileName, struct stat *statbuf, void *userData, int depth)
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{
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int i;
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#if ENABLE_FEATURE_FIND_MAXDEPTH
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int maxdepth = (int)(ptrdiff_t)userData;
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if (depth > maxdepth) return SKIP;
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#endif
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#if ENABLE_FEATURE_FIND_XDEV
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if (S_ISDIR(statbuf->st_mode) && xdev_count) {
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for (i = 0; i < xdev_count; i++) {
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if (xdev_dev[i] == statbuf->st_dev)
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break;
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}
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if (i == xdev_count)
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return SKIP;
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}
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#endif
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i = exec_actions(actions, fileName, statbuf);
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/* Had no explicit -print[0] or -exec? then print */
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if ((i & TRUE) && need_print)
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puts(fileName);
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/* Cannot return 0: our caller, recursive_action(),
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* will perror() and skip dirs (if called on dir) */
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return (i & SKIP) ? SKIP : TRUE;
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}
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#if ENABLE_FEATURE_FIND_TYPE
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static int find_type(const char *type)
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{
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int mask = 0;
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if (*type == 'b')
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mask = S_IFBLK;
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else if (*type == 'c')
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mask = S_IFCHR;
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else if (*type == 'd')
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mask = S_IFDIR;
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else if (*type == 'p')
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mask = S_IFIFO;
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else if (*type == 'f')
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mask = S_IFREG;
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else if (*type == 'l')
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mask = S_IFLNK;
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else if (*type == 's')
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mask = S_IFSOCK;
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if (mask == 0 || *(type + 1) != '\0')
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bb_error_msg_and_die(bb_msg_invalid_arg, type, "-type");
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return mask;
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}
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#endif
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#if ENABLE_FEATURE_FIND_PERM \
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|| ENABLE_FEATURE_FIND_MTIME || ENABLE_FEATURE_FIND_MMIN \
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|| ENABLE_FEATURE_FIND_SIZE
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static const char* plus_minus_num(const char* str)
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{
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if (*str == '-' || *str == '+')
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str++;
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return str;
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}
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#endif
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static action*** parse_params(char **argv)
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{
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enum {
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PARM_a ,
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PARM_o ,
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USE_FEATURE_FIND_NOT( PARM_char_not ,)
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#if ENABLE_DESKTOP
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PARM_and ,
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PARM_or ,
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USE_FEATURE_FIND_NOT( PARM_not ,)
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#endif
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PARM_print ,
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USE_FEATURE_FIND_PRINT0( PARM_print0 ,)
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USE_FEATURE_FIND_DEPTH( PARM_depth ,)
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USE_FEATURE_FIND_PRUNE( PARM_prune ,)
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USE_FEATURE_FIND_DELETE( PARM_delete ,)
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USE_FEATURE_FIND_EXEC( PARM_exec ,)
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USE_FEATURE_FIND_PAREN( PARM_char_brace,)
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/* All options starting from here require argument */
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PARM_name ,
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PARM_iname ,
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USE_FEATURE_FIND_PATH( PARM_path ,)
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USE_FEATURE_FIND_REGEX( PARM_regex ,)
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USE_FEATURE_FIND_TYPE( PARM_type ,)
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USE_FEATURE_FIND_PERM( PARM_perm ,)
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USE_FEATURE_FIND_MTIME( PARM_mtime ,)
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USE_FEATURE_FIND_MMIN( PARM_mmin ,)
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USE_FEATURE_FIND_NEWER( PARM_newer ,)
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USE_FEATURE_FIND_INUM( PARM_inum ,)
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USE_FEATURE_FIND_USER( PARM_user ,)
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USE_FEATURE_FIND_GROUP( PARM_group ,)
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USE_FEATURE_FIND_SIZE( PARM_size ,)
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USE_FEATURE_FIND_CONTEXT(PARM_context ,)
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};
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static const char params[] ALIGN1 =
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"-a\0"
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"-o\0"
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USE_FEATURE_FIND_NOT( "!\0" )
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#if ENABLE_DESKTOP
|
|
"-and\0"
|
|
"-or\0"
|
|
USE_FEATURE_FIND_NOT( "-not\0" )
|
|
#endif
|
|
"-print\0"
|
|
USE_FEATURE_FIND_PRINT0( "-print0\0" )
|
|
USE_FEATURE_FIND_DEPTH( "-depth\0" )
|
|
USE_FEATURE_FIND_PRUNE( "-prune\0" )
|
|
USE_FEATURE_FIND_DELETE( "-delete\0" )
|
|
USE_FEATURE_FIND_EXEC( "-exec\0" )
|
|
USE_FEATURE_FIND_PAREN( "(\0" )
|
|
/* All options starting from here require argument */
|
|
"-name\0"
|
|
"-iname\0"
|
|
USE_FEATURE_FIND_PATH( "-path\0" )
|
|
USE_FEATURE_FIND_REGEX( "-regex\0" )
|
|
USE_FEATURE_FIND_TYPE( "-type\0" )
|
|
USE_FEATURE_FIND_PERM( "-perm\0" )
|
|
USE_FEATURE_FIND_MTIME( "-mtime\0" )
|
|
USE_FEATURE_FIND_MMIN( "-mmin\0" )
|
|
USE_FEATURE_FIND_NEWER( "-newer\0" )
|
|
USE_FEATURE_FIND_INUM( "-inum\0" )
|
|
USE_FEATURE_FIND_USER( "-user\0" )
|
|
USE_FEATURE_FIND_GROUP( "-group\0" )
|
|
USE_FEATURE_FIND_SIZE( "-size\0" )
|
|
USE_FEATURE_FIND_CONTEXT("-context\0")
|
|
;
|
|
|
|
action*** appp;
|
|
unsigned cur_group = 0;
|
|
unsigned cur_action = 0;
|
|
USE_FEATURE_FIND_NOT( bool invert_flag = 0; )
|
|
|
|
/* 'static' doesn't work here! (gcc 4.1.2) */
|
|
action* alloc_action(int sizeof_struct, action_fp f)
|
|
{
|
|
action *ap;
|
|
appp[cur_group] = xrealloc(appp[cur_group], (cur_action+2) * sizeof(*appp));
|
|
appp[cur_group][cur_action++] = ap = xmalloc(sizeof_struct);
|
|
appp[cur_group][cur_action] = NULL;
|
|
ap->f = f;
|
|
USE_FEATURE_FIND_NOT( ap->invert = invert_flag; )
|
|
USE_FEATURE_FIND_NOT( invert_flag = 0; )
|
|
return ap;
|
|
}
|
|
|
|
#define ALLOC_ACTION(name) (action_##name*)alloc_action(sizeof(action_##name), (action_fp) func_##name)
|
|
|
|
appp = xzalloc(2 * sizeof(appp[0])); /* appp[0],[1] == NULL */
|
|
|
|
/* Actions have side effects and return a true or false value
|
|
* We implement: -print, -print0, -exec
|
|
*
|
|
* The rest are tests.
|
|
*
|
|
* Tests and actions are grouped by operators
|
|
* ( expr ) Force precedence
|
|
* ! expr True if expr is false
|
|
* -not expr Same as ! expr
|
|
* expr1 [-a[nd]] expr2 And; expr2 is not evaluated if expr1 is false
|
|
* expr1 -o[r] expr2 Or; expr2 is not evaluated if expr1 is true
|
|
* expr1 , expr2 List; both expr1 and expr2 are always evaluated
|
|
* We implement: (), -a, -o
|
|
*/
|
|
while (*argv) {
|
|
const char *arg = argv[0];
|
|
int parm = index_in_strings(params, arg);
|
|
const char *arg1 = argv[1];
|
|
|
|
if (parm >= PARM_name) {
|
|
/* All options starting from -name require argument */
|
|
if (!arg1)
|
|
bb_error_msg_and_die(bb_msg_requires_arg, arg);
|
|
argv++;
|
|
}
|
|
|
|
/* We can use big switch() here, but on i386
|
|
* it doesn't give smaller code. Other arches? */
|
|
|
|
/* --- Operators --- */
|
|
if (parm == PARM_a USE_DESKTOP(|| parm == PARM_and)) {
|
|
/* no further special handling required */
|
|
}
|
|
else if (parm == PARM_o USE_DESKTOP(|| parm == PARM_or)) {
|
|
/* start new OR group */
|
|
cur_group++;
|
|
appp = xrealloc(appp, (cur_group+2) * sizeof(*appp));
|
|
/*appp[cur_group] = NULL; - already NULL */
|
|
appp[cur_group+1] = NULL;
|
|
cur_action = 0;
|
|
}
|
|
#if ENABLE_FEATURE_FIND_NOT
|
|
else if (parm == PARM_char_not USE_DESKTOP(|| parm == PARM_not)) {
|
|
/* also handles "find ! ! -name 'foo*'" */
|
|
invert_flag ^= 1;
|
|
}
|
|
#endif
|
|
|
|
/* --- Tests and actions --- */
|
|
else if (parm == PARM_print) {
|
|
need_print = 0;
|
|
/* GNU find ignores '!' here: "find ! -print" */
|
|
USE_FEATURE_FIND_NOT( invert_flag = 0; )
|
|
(void) ALLOC_ACTION(print);
|
|
}
|
|
#if ENABLE_FEATURE_FIND_PRINT0
|
|
else if (parm == PARM_print0) {
|
|
need_print = 0;
|
|
USE_FEATURE_FIND_NOT( invert_flag = 0; )
|
|
(void) ALLOC_ACTION(print0);
|
|
}
|
|
#endif
|
|
#if ENABLE_FEATURE_FIND_DEPTH
|
|
else if (parm == PARM_depth) {
|
|
recurse_flags |= ACTION_DEPTHFIRST;
|
|
}
|
|
#endif
|
|
#if ENABLE_FEATURE_FIND_PRUNE
|
|
else if (parm == PARM_prune) {
|
|
USE_FEATURE_FIND_NOT( invert_flag = 0; )
|
|
(void) ALLOC_ACTION(prune);
|
|
}
|
|
#endif
|
|
#if ENABLE_FEATURE_FIND_DELETE
|
|
else if (parm == PARM_delete) {
|
|
need_print = 0;
|
|
recurse_flags |= ACTION_DEPTHFIRST;
|
|
(void) ALLOC_ACTION(delete);
|
|
}
|
|
#endif
|
|
#if ENABLE_FEATURE_FIND_EXEC
|
|
else if (parm == PARM_exec) {
|
|
int i;
|
|
action_exec *ap;
|
|
need_print = 0;
|
|
USE_FEATURE_FIND_NOT( invert_flag = 0; )
|
|
ap = ALLOC_ACTION(exec);
|
|
ap->exec_argv = ++argv; /* first arg after -exec */
|
|
ap->exec_argc = 0;
|
|
while (1) {
|
|
if (!*argv) /* did not see ';' until end */
|
|
bb_error_msg_and_die("-exec CMD must end by ';'");
|
|
if (LONE_CHAR(argv[0], ';'))
|
|
break;
|
|
argv++;
|
|
ap->exec_argc++;
|
|
}
|
|
if (ap->exec_argc == 0)
|
|
bb_error_msg_and_die(bb_msg_requires_arg, arg);
|
|
ap->subst_count = xmalloc(ap->exec_argc * sizeof(int));
|
|
i = ap->exec_argc;
|
|
while (i--)
|
|
ap->subst_count[i] = count_subst(ap->exec_argv[i]);
|
|
}
|
|
#endif
|
|
#if ENABLE_FEATURE_FIND_PAREN
|
|
else if (parm == PARM_char_brace) {
|
|
action_paren *ap;
|
|
char **endarg;
|
|
unsigned nested = 1;
|
|
|
|
endarg = argv;
|
|
while (1) {
|
|
if (!*++endarg)
|
|
bb_error_msg_and_die("unpaired '('");
|
|
if (LONE_CHAR(*endarg, '('))
|
|
nested++;
|
|
else if (LONE_CHAR(*endarg, ')') && !--nested) {
|
|
*endarg = NULL;
|
|
break;
|
|
}
|
|
}
|
|
ap = ALLOC_ACTION(paren);
|
|
ap->subexpr = parse_params(argv + 1);
|
|
*endarg = (char*) ")"; /* restore NULLed parameter */
|
|
argv = endarg;
|
|
}
|
|
#endif
|
|
else if (parm == PARM_name || parm == PARM_iname) {
|
|
action_name *ap;
|
|
ap = ALLOC_ACTION(name);
|
|
ap->pattern = arg1;
|
|
ap->iname = (parm == PARM_iname);
|
|
}
|
|
#if ENABLE_FEATURE_FIND_PATH
|
|
else if (parm == PARM_path) {
|
|
action_path *ap;
|
|
ap = ALLOC_ACTION(path);
|
|
ap->pattern = arg1;
|
|
}
|
|
#endif
|
|
#if ENABLE_FEATURE_FIND_REGEX
|
|
else if (parm == PARM_regex) {
|
|
action_regex *ap;
|
|
ap = ALLOC_ACTION(regex);
|
|
xregcomp(&ap->compiled_pattern, arg1, 0 /*cflags*/);
|
|
}
|
|
#endif
|
|
#if ENABLE_FEATURE_FIND_TYPE
|
|
else if (parm == PARM_type) {
|
|
action_type *ap;
|
|
ap = ALLOC_ACTION(type);
|
|
ap->type_mask = find_type(arg1);
|
|
}
|
|
#endif
|
|
#if ENABLE_FEATURE_FIND_PERM
|
|
/* -perm mode File's permission bits are exactly mode (octal or symbolic).
|
|
* Symbolic modes use mode 0 as a point of departure.
|
|
* -perm -mode All of the permission bits mode are set for the file.
|
|
* -perm +mode Any of the permission bits mode are set for the file.
|
|
*/
|
|
else if (parm == PARM_perm) {
|
|
action_perm *ap;
|
|
ap = ALLOC_ACTION(perm);
|
|
ap->perm_char = arg1[0];
|
|
arg1 = plus_minus_num(arg1);
|
|
ap->perm_mask = 0;
|
|
if (!bb_parse_mode(arg1, &ap->perm_mask))
|
|
bb_error_msg_and_die("invalid mode: %s", arg1);
|
|
}
|
|
#endif
|
|
#if ENABLE_FEATURE_FIND_MTIME
|
|
else if (parm == PARM_mtime) {
|
|
action_mtime *ap;
|
|
ap = ALLOC_ACTION(mtime);
|
|
ap->mtime_char = arg1[0];
|
|
ap->mtime_days = xatoul(plus_minus_num(arg1));
|
|
}
|
|
#endif
|
|
#if ENABLE_FEATURE_FIND_MMIN
|
|
else if (parm == PARM_mmin) {
|
|
action_mmin *ap;
|
|
ap = ALLOC_ACTION(mmin);
|
|
ap->mmin_char = arg1[0];
|
|
ap->mmin_mins = xatoul(plus_minus_num(arg1));
|
|
}
|
|
#endif
|
|
#if ENABLE_FEATURE_FIND_NEWER
|
|
else if (parm == PARM_newer) {
|
|
struct stat stat_newer;
|
|
action_newer *ap;
|
|
ap = ALLOC_ACTION(newer);
|
|
xstat(arg1, &stat_newer);
|
|
ap->newer_mtime = stat_newer.st_mtime;
|
|
}
|
|
#endif
|
|
#if ENABLE_FEATURE_FIND_INUM
|
|
else if (parm == PARM_inum) {
|
|
action_inum *ap;
|
|
ap = ALLOC_ACTION(inum);
|
|
ap->inode_num = xatoul(arg1);
|
|
}
|
|
#endif
|
|
#if ENABLE_FEATURE_FIND_USER
|
|
else if (parm == PARM_user) {
|
|
action_user *ap;
|
|
ap = ALLOC_ACTION(user);
|
|
ap->uid = bb_strtou(arg1, NULL, 10);
|
|
if (errno)
|
|
ap->uid = xuname2uid(arg1);
|
|
}
|
|
#endif
|
|
#if ENABLE_FEATURE_FIND_GROUP
|
|
else if (parm == PARM_group) {
|
|
action_group *ap;
|
|
ap = ALLOC_ACTION(group);
|
|
ap->gid = bb_strtou(arg1, NULL, 10);
|
|
if (errno)
|
|
ap->gid = xgroup2gid(arg1);
|
|
}
|
|
#endif
|
|
#if ENABLE_FEATURE_FIND_SIZE
|
|
else if (parm == PARM_size) {
|
|
/* -size n[bckw]: file uses n units of space
|
|
* b (default): units are 512-byte blocks
|
|
* c: 1 byte
|
|
* k: kilobytes
|
|
* w: 2-byte words
|
|
*/
|
|
#if ENABLE_LFS
|
|
#define XATOU_SFX xatoull_sfx
|
|
#else
|
|
#define XATOU_SFX xatoul_sfx
|
|
#endif
|
|
static const struct suffix_mult find_suffixes[] = {
|
|
{ "c", 1 },
|
|
{ "w", 2 },
|
|
{ "", 512 },
|
|
{ "b", 512 },
|
|
{ "k", 1024 },
|
|
{ }
|
|
};
|
|
action_size *ap;
|
|
ap = ALLOC_ACTION(size);
|
|
ap->size_char = arg1[0];
|
|
ap->size = XATOU_SFX(plus_minus_num(arg1), find_suffixes);
|
|
}
|
|
#endif
|
|
#if ENABLE_FEATURE_FIND_CONTEXT
|
|
else if (parm == PARM_context) {
|
|
action_context *ap;
|
|
ap = ALLOC_ACTION(context);
|
|
ap->context = NULL;
|
|
/* SELinux headers erroneously declare non-const parameter */
|
|
if (selinux_raw_to_trans_context((char*)arg1, &ap->context))
|
|
bb_simple_perror_msg(arg1);
|
|
}
|
|
#endif
|
|
else {
|
|
bb_error_msg("unrecognized: %s", arg);
|
|
bb_show_usage();
|
|
}
|
|
argv++;
|
|
}
|
|
return appp;
|
|
#undef ALLOC_ACTION
|
|
}
|
|
|
|
|
|
int find_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|
int find_main(int argc, char **argv)
|
|
{
|
|
static const char options[] ALIGN1 =
|
|
"-follow\0"
|
|
USE_FEATURE_FIND_XDEV( "-xdev\0" )
|
|
USE_FEATURE_FIND_MAXDEPTH("-maxdepth\0")
|
|
;
|
|
enum {
|
|
OPT_FOLLOW,
|
|
USE_FEATURE_FIND_XDEV( OPT_XDEV ,)
|
|
USE_FEATURE_FIND_MAXDEPTH(OPT_MAXDEPTH,)
|
|
};
|
|
|
|
char *arg;
|
|
char **argp;
|
|
int i, firstopt, status = EXIT_SUCCESS;
|
|
#if ENABLE_FEATURE_FIND_MAXDEPTH
|
|
int maxdepth = INT_MAX;
|
|
#endif
|
|
|
|
for (firstopt = 1; firstopt < argc; firstopt++) {
|
|
if (argv[firstopt][0] == '-')
|
|
break;
|
|
if (ENABLE_FEATURE_FIND_NOT && LONE_CHAR(argv[firstopt], '!'))
|
|
break;
|
|
#if ENABLE_FEATURE_FIND_PAREN
|
|
if (LONE_CHAR(argv[firstopt], '('))
|
|
break;
|
|
#endif
|
|
}
|
|
if (firstopt == 1) {
|
|
argv[0] = (char*)".";
|
|
argv--;
|
|
firstopt++;
|
|
}
|
|
|
|
/* All options always return true. They always take effect
|
|
* rather than being processed only when their place in the
|
|
* expression is reached.
|
|
* We implement: -follow, -xdev, -maxdepth
|
|
*/
|
|
/* Process options, and replace then with -a */
|
|
/* (-a will be ignored by recursive parser later) */
|
|
argp = &argv[firstopt];
|
|
while ((arg = argp[0])) {
|
|
int opt = index_in_strings(options, arg);
|
|
if (opt == OPT_FOLLOW) {
|
|
recurse_flags |= ACTION_FOLLOWLINKS;
|
|
argp[0] = (char*)"-a";
|
|
}
|
|
#if ENABLE_FEATURE_FIND_XDEV
|
|
if (opt == OPT_XDEV) {
|
|
struct stat stbuf;
|
|
if (!xdev_count) {
|
|
xdev_count = firstopt - 1;
|
|
xdev_dev = xmalloc(xdev_count * sizeof(dev_t));
|
|
for (i = 1; i < firstopt; i++) {
|
|
/* not xstat(): shouldn't bomb out on
|
|
* "find not_exist exist -xdev" */
|
|
if (stat(argv[i], &stbuf))
|
|
stbuf.st_dev = -1L;
|
|
xdev_dev[i-1] = stbuf.st_dev;
|
|
}
|
|
}
|
|
argp[0] = (char*)"-a";
|
|
}
|
|
#endif
|
|
#if ENABLE_FEATURE_FIND_MAXDEPTH
|
|
if (opt == OPT_MAXDEPTH) {
|
|
if (!argp[1])
|
|
bb_show_usage();
|
|
maxdepth = xatoi_u(argp[1]);
|
|
argp[0] = (char*)"-a";
|
|
argp[1] = (char*)"-a";
|
|
argp++;
|
|
}
|
|
#endif
|
|
argp++;
|
|
}
|
|
|
|
actions = parse_params(&argv[firstopt]);
|
|
|
|
for (i = 1; i < firstopt; i++) {
|
|
if (!recursive_action(argv[i],
|
|
recurse_flags, /* flags */
|
|
fileAction, /* file action */
|
|
fileAction, /* dir action */
|
|
#if ENABLE_FEATURE_FIND_MAXDEPTH
|
|
/* double cast suppresses
|
|
* "cast to ptr from int of different size" */
|
|
(void*)(ptrdiff_t)maxdepth,/* user data */
|
|
#else
|
|
NULL, /* user data */
|
|
#endif
|
|
0)) /* depth */
|
|
status = EXIT_FAILURE;
|
|
}
|
|
return status;
|
|
}
|