1 /* vi: set sw=4 ts=4: */
3 * Mini find implementation for busybox
5 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
7 * Reworked by David Douthitt <n9ubh@callsign.net> and
8 * Matt Kraai <kraai@alumni.carnegiemellon.edu>.
10 * Licensed under GPLv2, see file LICENSE in this source tree.
15 * # find file.txt -exec 'echo {}' '{} {}' ';'
16 * find: echo file.txt: No such file or directory
17 * # find file.txt -exec 'echo' '{} {}' '; '
18 * find: missing argument to `-exec'
19 * # find file.txt -exec 'echo {}' '{} {}' ';' junk
20 * find: paths must precede expression
21 * # find file.txt -exec 'echo {}' '{} {}' ';' junk ';'
22 * find: paths must precede expression
23 * # find file.txt -exec 'echo' '{} {}' ';'
25 * (strace: execve("/bin/echo", ["echo", "file.txt file.txt"], [ 30 vars ]))
26 * # find file.txt -exec 'echo' '{} {}' ';' -print -exec pwd ';'
30 * # find -name '*.c' -o -name '*.h'
31 * [shows files, *.c and *.h intermixed]
32 * # find file.txt -name '*f*' -o -name '*t*'
34 * # find file.txt -name '*z*' -o -name '*t*'
36 * # find file.txt -name '*f*' -o -name '*z*'
39 * # find t z -name '*t*' -print -o -name '*z*'
41 * # find t z t z -name '*t*' -o -name '*z*' -print
44 * # find t z t z '(' -name '*t*' -o -name '*z*' ')' -o -print
49 * ./busybox find "$@" | tee /tmp/bb_find
50 * echo ==================
51 * /path/to/gnu/find "$@" | tee /tmp/std_find
52 * echo ==================
53 * diff -u /tmp/std_find /tmp/bb_find && echo Identical
60 //config: find is used to search your system to find specified files.
62 //config:config FEATURE_FIND_PRINT0
63 //config: bool "Enable -print0: NUL-terminated output"
65 //config: depends on FIND
67 //config: Causes output names to be separated by a NUL character
68 //config: rather than a newline. This allows names that contain
69 //config: newlines and other whitespace to be more easily
70 //config: interpreted by other programs.
72 //config:config FEATURE_FIND_MTIME
73 //config: bool "Enable -mtime: modified time matching"
75 //config: depends on FIND
77 //config: Allow searching based on the modification time of
78 //config: files, in days.
80 //config:config FEATURE_FIND_MMIN
81 //config: bool "Enable -mmin: modified time matching by minutes"
83 //config: depends on FIND
85 //config: Allow searching based on the modification time of
86 //config: files, in minutes.
88 //config:config FEATURE_FIND_PERM
89 //config: bool "Enable -perm: permissions matching"
91 //config: depends on FIND
93 //config: Enable searching based on file permissions.
95 //config:config FEATURE_FIND_TYPE
96 //config: bool "Enable -type: file type matching (file/dir/link/...)"
98 //config: depends on FIND
100 //config: Enable searching based on file type (file,
101 //config: directory, socket, device, etc.).
103 //config:config FEATURE_FIND_XDEV
104 //config: bool "Enable -xdev: 'stay in filesystem'"
106 //config: depends on FIND
108 //config: This option allows find to restrict searches to a single filesystem.
110 //config:config FEATURE_FIND_MAXDEPTH
111 //config: bool "Enable -mindepth N and -maxdepth N"
113 //config: depends on FIND
115 //config: This option enables -mindepth N and -maxdepth N option.
117 //config:config FEATURE_FIND_NEWER
118 //config: bool "Enable -newer: compare file modification times"
120 //config: depends on FIND
122 //config: Support the 'find -newer' option for finding any files which have
123 //config: modification time that is more recent than the specified FILE.
125 //config:config FEATURE_FIND_INUM
126 //config: bool "Enable -inum: inode number matching"
128 //config: depends on FIND
130 //config: Support the 'find -inum' option for searching by inode number.
132 //config:config FEATURE_FIND_EXEC
133 //config: bool "Enable -exec: execute commands"
135 //config: depends on FIND
137 //config: Support the 'find -exec' option for executing commands based upon
138 //config: the files matched.
140 //config:config FEATURE_FIND_USER
141 //config: bool "Enable -user: username/uid matching"
143 //config: depends on FIND
145 //config: Support the 'find -user' option for searching by username or uid.
147 //config:config FEATURE_FIND_GROUP
148 //config: bool "Enable -group: group/gid matching"
150 //config: depends on FIND
152 //config: Support the 'find -group' option for searching by group name or gid.
154 //config:config FEATURE_FIND_NOT
155 //config: bool "Enable the 'not' (!) operator"
157 //config: depends on FIND
159 //config: Support the '!' operator to invert the test results.
160 //config: If 'Enable full-blown desktop' is enabled, then will also support
161 //config: the non-POSIX notation '-not'.
163 //config:config FEATURE_FIND_DEPTH
164 //config: bool "Enable -depth"
166 //config: depends on FIND
168 //config: Process each directory's contents before the directory itself.
170 //config:config FEATURE_FIND_PAREN
171 //config: bool "Enable parens in options"
173 //config: depends on FIND
175 //config: Enable usage of parens '(' to specify logical order of arguments.
177 //config:config FEATURE_FIND_SIZE
178 //config: bool "Enable -size: file size matching"
180 //config: depends on FIND
182 //config: Support the 'find -size' option for searching by file size.
184 //config:config FEATURE_FIND_PRUNE
185 //config: bool "Enable -prune: exclude subdirectories"
187 //config: depends on FIND
189 //config: If the file is a directory, dont descend into it. Useful for
190 //config: exclusion .svn and CVS directories.
192 //config:config FEATURE_FIND_DELETE
193 //config: bool "Enable -delete: delete files/dirs"
195 //config: depends on FIND && FEATURE_FIND_DEPTH
197 //config: Support the 'find -delete' option for deleting files and directories.
198 //config: WARNING: This option can do much harm if used wrong. Busybox will not
199 //config: try to protect the user from doing stupid things. Use with care.
201 //config:config FEATURE_FIND_PATH
202 //config: bool "Enable -path: match pathname with shell pattern"
204 //config: depends on FIND
206 //config: The -path option matches whole pathname instead of just filename.
208 //config:config FEATURE_FIND_REGEX
209 //config: bool "Enable -regex: match pathname with regex"
211 //config: depends on FIND
213 //config: The -regex option matches whole pathname against regular expression.
215 //config:config FEATURE_FIND_CONTEXT
216 //config: bool "Enable -context: security context matching"
218 //config: depends on FIND && SELINUX
220 //config: Support the 'find -context' option for matching security context.
222 //config:config FEATURE_FIND_LINKS
223 //config: bool "Enable -links: link count matching"
225 //config: depends on FIND
227 //config: Support the 'find -links' option for matching number of links.
229 //applet:IF_FIND(APPLET_NOEXEC(find, find, BB_DIR_USR_BIN, BB_SUID_DROP, find))
231 //kbuild:lib-$(CONFIG_FIND) += find.o
233 //usage:#define find_trivial_usage
234 //usage: "[PATH]... [OPTIONS] [ACTIONS]"
235 //usage:#define find_full_usage "\n\n"
236 //usage: "Search for files and perform actions on them.\n"
237 //usage: "First failed action stops processing of current file.\n"
238 //usage: "Defaults: PATH is current directory, action is '-print'\n"
239 //usage: "\nOptions:"
240 //usage: "\n -follow Follow symlinks"
241 //usage: IF_FEATURE_FIND_XDEV(
242 //usage: "\n -xdev Don't descend directories on other filesystems"
244 //usage: IF_FEATURE_FIND_MAXDEPTH(
245 //usage: "\n -maxdepth N Descend at most N levels. -maxdepth 0 applies"
246 //usage: "\n actions to command line arguments only"
247 //usage: "\n -mindepth N Don't act on first N levels"
249 //usage: IF_FEATURE_FIND_DEPTH(
250 //usage: "\n -depth Act on directory *after* traversing it"
253 //usage: "\nActions:"
254 //usage: IF_FEATURE_FIND_PAREN(
255 //usage: "\n ( ACTIONS ) Group actions for -o / -a"
257 //usage: IF_FEATURE_FIND_NOT(
258 //usage: "\n ! ACT Invert ACT's success/failure"
260 //usage: "\n ACT1 [-a] ACT2 If ACT1 fails, stop, else do ACT2"
261 //usage: "\n ACT1 -o ACT2 If ACT1 succeeds, stop, else do ACT2"
262 //usage: "\n Note: -a has higher priority than -o"
263 //usage: "\n -name PATTERN Match file name (w/o directory name) to PATTERN"
264 //usage: "\n -iname PATTERN Case insensitive -name"
265 //usage: IF_FEATURE_FIND_PATH(
266 //usage: "\n -path PATTERN Match path to PATTERN"
268 //usage: IF_FEATURE_FIND_REGEX(
269 //usage: "\n -regex PATTERN Match path to regex PATTERN"
271 //usage: IF_FEATURE_FIND_TYPE(
272 //usage: "\n -type X File type is X (one of: f,d,l,b,c,...)"
274 //usage: IF_FEATURE_FIND_PERM(
275 //usage: "\n -perm MASK At least one mask bit (+MASK), all bits (-MASK),"
276 //usage: "\n or exactly MASK bits are set in file's mode"
278 //usage: IF_FEATURE_FIND_MTIME(
279 //usage: "\n -mtime DAYS mtime is greater than (+N), less than (-N),"
280 //usage: "\n or exactly N days in the past"
282 //usage: IF_FEATURE_FIND_MMIN(
283 //usage: "\n -mmin MINS mtime is greater than (+N), less than (-N),"
284 //usage: "\n or exactly N minutes in the past"
286 //usage: IF_FEATURE_FIND_NEWER(
287 //usage: "\n -newer FILE mtime is more recent than FILE's"
289 //usage: IF_FEATURE_FIND_INUM(
290 //usage: "\n -inum N File has inode number N"
292 //usage: IF_FEATURE_FIND_USER(
293 //usage: "\n -user NAME/ID File is owned by given user"
295 //usage: IF_FEATURE_FIND_GROUP(
296 //usage: "\n -group NAME/ID File is owned by given group"
298 //usage: IF_FEATURE_FIND_SIZE(
299 //usage: "\n -size N[bck] File size is N (c:bytes,k:kbytes,b:512 bytes(def.))"
300 //usage: "\n +/-N: file size is bigger/smaller than N"
302 //usage: IF_FEATURE_FIND_LINKS(
303 //usage: "\n -links N Number of links is greater than (+N), less than (-N),"
304 //usage: "\n or exactly N"
306 //usage: IF_FEATURE_FIND_CONTEXT(
307 //usage: "\n -context CTX File has specified security context"
309 //usage: IF_FEATURE_FIND_PRUNE(
310 //usage: "\n -prune If current file is directory, don't descend into it"
312 //usage: "\nIf none of the following actions is specified, -print is assumed"
313 //usage: "\n -print Print file name"
314 //usage: IF_FEATURE_FIND_PRINT0(
315 //usage: "\n -print0 Print file name, NUL terminated"
317 //usage: IF_FEATURE_FIND_EXEC(
318 //usage: "\n -exec CMD ARG ; Run CMD with all instances of {} replaced by"
319 //usage: "\n file name. Fails if CMD exits with nonzero"
321 //usage: IF_FEATURE_FIND_DELETE(
322 //usage: "\n -delete Delete current file/directory. Turns on -depth option"
325 //usage:#define find_example_usage
326 //usage: "$ find / -name passwd\n"
327 //usage: "/etc/passwd\n"
331 #if ENABLE_FEATURE_FIND_REGEX
335 /* This is a NOEXEC applet. Be very careful! */
338 typedef int (*action_fp)(const char *fileName, const struct stat *statbuf, void *) FAST_FUNC;
342 #if ENABLE_FEATURE_FIND_NOT
347 #define ACTS(name, ...) typedef struct { action a; __VA_ARGS__ } action_##name;
349 static int FAST_FUNC func_##name(const char *fileName UNUSED_PARAM, \
350 const struct stat *statbuf UNUSED_PARAM, \
351 action_##name* ap UNUSED_PARAM)
354 ACTS(name, const char *pattern; bool iname;)
355 IF_FEATURE_FIND_PATH( ACTS(path, const char *pattern;))
356 IF_FEATURE_FIND_REGEX( ACTS(regex, regex_t compiled_pattern;))
357 IF_FEATURE_FIND_PRINT0( ACTS(print0))
358 IF_FEATURE_FIND_TYPE( ACTS(type, int type_mask;))
359 IF_FEATURE_FIND_PERM( ACTS(perm, char perm_char; mode_t perm_mask;))
360 IF_FEATURE_FIND_MTIME( ACTS(mtime, char mtime_char; unsigned mtime_days;))
361 IF_FEATURE_FIND_MMIN( ACTS(mmin, char mmin_char; unsigned mmin_mins;))
362 IF_FEATURE_FIND_NEWER( ACTS(newer, time_t newer_mtime;))
363 IF_FEATURE_FIND_INUM( ACTS(inum, ino_t inode_num;))
364 IF_FEATURE_FIND_USER( ACTS(user, uid_t uid;))
365 IF_FEATURE_FIND_SIZE( ACTS(size, char size_char; off_t size;))
366 IF_FEATURE_FIND_CONTEXT(ACTS(context, security_context_t context;))
367 IF_FEATURE_FIND_PAREN( ACTS(paren, action ***subexpr;))
368 IF_FEATURE_FIND_PRUNE( ACTS(prune))
369 IF_FEATURE_FIND_DELETE( ACTS(delete))
370 IF_FEATURE_FIND_EXEC( ACTS(exec, char **exec_argv; unsigned *subst_count; int exec_argc;))
371 IF_FEATURE_FIND_GROUP( ACTS(group, gid_t gid;))
372 IF_FEATURE_FIND_LINKS( ACTS(links, char links_char; int links_count;))
375 IF_FEATURE_FIND_XDEV(dev_t *xdev_dev;)
376 IF_FEATURE_FIND_XDEV(int xdev_count;)
377 #if ENABLE_FEATURE_FIND_MAXDEPTH
383 recurse_flags_t recurse_flags;
385 #define G (*(struct globals*)&bb_common_bufsiz1)
386 #define INIT_G() do { \
387 struct G_sizecheck { \
388 char G_sizecheck[sizeof(G) > COMMON_BUFSIZE ? -1 : 1]; \
390 /* we have to zero it out because of NOEXEC */ \
391 memset(&G, 0, sizeof(G)); \
392 IF_FEATURE_FIND_MAXDEPTH(G.minmaxdepth[1] = INT_MAX;) \
394 G.recurse_flags = ACTION_RECURSE; \
397 #if ENABLE_FEATURE_FIND_EXEC
398 static unsigned count_subst(const char *str)
401 while ((str = strstr(str, "{}")) != NULL) {
409 static char* subst(const char *src, unsigned count, const char* filename)
411 char *buf, *dst, *end;
412 size_t flen = strlen(filename);
413 /* we replace each '{}' with filename: growth by strlen-2 */
414 buf = dst = xmalloc(strlen(src) + count*(flen-2) + 1);
415 while ((end = strstr(src, "{}"))) {
416 memcpy(dst, src, end - src);
419 memcpy(dst, filename, flen);
427 /* Return values of ACTFs ('action functions') are a bit mask:
428 * bit 1=1: prune (use SKIP constant for setting it)
429 * bit 0=1: matched successfully (TRUE)
432 static int exec_actions(action ***appp, const char *fileName, const struct stat *statbuf)
439 /* "action group" is a set of actions ANDed together.
440 * groups are ORed together.
441 * We simply evaluate each group until we find one in which all actions
444 /* -prune is special: if it is encountered, then we won't
445 * descend into current directory. It doesn't matter whether
446 * action group (in which -prune sits) will succeed or not:
447 * find * -prune -name 'f*' -o -name 'm*' -- prunes every dir
448 * find * -name 'f*' -o -prune -name 'm*' -- prunes all dirs
449 * not starting with 'f' */
451 /* We invert TRUE bit (bit 0). Now 1 there means 'failure'.
452 * and bitwise OR in "rc |= TRUE ^ ap->f()" will:
453 * (1) make SKIP (-prune) bit stick; and (2) detect 'failure'.
454 * On return, bit is restored. */
457 while ((app = appp[++cur_group]) != NULL) {
458 rc &= ~TRUE; /* 'success' so far, clear TRUE bit */
461 ap = app[++cur_action];
462 if (!ap) /* all actions in group were successful */
463 return rc ^ TRUE; /* restore TRUE bit */
464 rc |= TRUE ^ ap->f(fileName, statbuf, ap);
465 #if ENABLE_FEATURE_FIND_NOT
466 if (ap->invert) rc ^= TRUE;
468 if (rc & TRUE) /* current group failed, try next */
472 return rc ^ TRUE; /* restore TRUE bit */
478 const char *tmp = bb_basename(fileName);
479 if (tmp != fileName && *tmp == '\0') {
480 /* "foo/bar/". Oh no... go back to 'b' */
482 while (tmp != fileName && *--tmp != '/')
487 /* Was using FNM_PERIOD flag too,
488 * but somewhere between 4.1.20 and 4.4.0 GNU find stopped using it.
489 * find -name '*foo' should match .foo too:
491 return fnmatch(ap->pattern, tmp, (ap->iname ? FNM_CASEFOLD : 0)) == 0;
494 #if ENABLE_FEATURE_FIND_PATH
497 return fnmatch(ap->pattern, fileName, 0) == 0;
500 #if ENABLE_FEATURE_FIND_REGEX
504 if (regexec(&ap->compiled_pattern, fileName, 1, &match, 0 /*eflags*/))
505 return 0; /* no match */
507 return 0; /* match doesn't start at pos 0 */
508 if (fileName[match.rm_eo])
509 return 0; /* match doesn't end exactly at end of pathname */
513 #if ENABLE_FEATURE_FIND_TYPE
516 return ((statbuf->st_mode & S_IFMT) == ap->type_mask);
519 #if ENABLE_FEATURE_FIND_PERM
522 /* -perm +mode: at least one of perm_mask bits are set */
523 if (ap->perm_char == '+')
524 return (statbuf->st_mode & ap->perm_mask) != 0;
525 /* -perm -mode: all of perm_mask are set */
526 if (ap->perm_char == '-')
527 return (statbuf->st_mode & ap->perm_mask) == ap->perm_mask;
528 /* -perm mode: file mode must match perm_mask */
529 return (statbuf->st_mode & 07777) == ap->perm_mask;
532 #if ENABLE_FEATURE_FIND_MTIME
535 time_t file_age = time(NULL) - statbuf->st_mtime;
536 time_t mtime_secs = ap->mtime_days * 24*60*60;
537 if (ap->mtime_char == '+')
538 return file_age >= mtime_secs + 24*60*60;
539 if (ap->mtime_char == '-')
540 return file_age < mtime_secs;
541 /* just numeric mtime */
542 return file_age >= mtime_secs && file_age < (mtime_secs + 24*60*60);
545 #if ENABLE_FEATURE_FIND_MMIN
548 time_t file_age = time(NULL) - statbuf->st_mtime;
549 time_t mmin_secs = ap->mmin_mins * 60;
550 if (ap->mmin_char == '+')
551 return file_age >= mmin_secs + 60;
552 if (ap->mmin_char == '-')
553 return file_age < mmin_secs;
554 /* just numeric mmin */
555 return file_age >= mmin_secs && file_age < (mmin_secs + 60);
558 #if ENABLE_FEATURE_FIND_NEWER
561 return (ap->newer_mtime < statbuf->st_mtime);
564 #if ENABLE_FEATURE_FIND_INUM
567 return (statbuf->st_ino == ap->inode_num);
570 #if ENABLE_FEATURE_FIND_EXEC
574 #if ENABLE_USE_PORTABLE_CODE
575 char **argv = alloca(sizeof(char*) * (ap->exec_argc + 1));
576 #else /* gcc 4.3.1 generates smaller code: */
577 char *argv[ap->exec_argc + 1];
579 for (i = 0; i < ap->exec_argc; i++)
580 argv[i] = subst(ap->exec_argv[i], ap->subst_count[i], fileName);
581 argv[i] = NULL; /* terminate the list */
583 rc = spawn_and_wait(argv);
585 bb_simple_perror_msg(argv[0]);
590 return rc == 0; /* return 1 if exitcode 0 */
593 #if ENABLE_FEATURE_FIND_USER
596 return (statbuf->st_uid == ap->uid);
599 #if ENABLE_FEATURE_FIND_GROUP
602 return (statbuf->st_gid == ap->gid);
605 #if ENABLE_FEATURE_FIND_PRINT0
608 printf("%s%c", fileName, '\0');
617 #if ENABLE_FEATURE_FIND_PAREN
620 return exec_actions(ap->subexpr, fileName, statbuf);
623 #if ENABLE_FEATURE_FIND_SIZE
626 if (ap->size_char == '+')
627 return statbuf->st_size > ap->size;
628 if (ap->size_char == '-')
629 return statbuf->st_size < ap->size;
630 return statbuf->st_size == ap->size;
633 #if ENABLE_FEATURE_FIND_PRUNE
635 * -prune: if -depth is not given, return true and do not descend
636 * current dir; if -depth is given, return false with no effect.
638 * find dir -name 'asm-*' -prune -o -name '*.[chS]' -print
645 #if ENABLE_FEATURE_FIND_DELETE
649 if (S_ISDIR(statbuf->st_mode)) {
650 rc = rmdir(fileName);
652 rc = unlink(fileName);
655 bb_simple_perror_msg(fileName);
659 #if ENABLE_FEATURE_FIND_CONTEXT
662 security_context_t con;
665 if (G.recurse_flags & ACTION_FOLLOWLINKS) {
666 rc = getfilecon(fileName, &con);
668 rc = lgetfilecon(fileName, &con);
672 rc = strcmp(ap->context, con);
677 #if ENABLE_FEATURE_FIND_LINKS
680 switch(ap->links_char) {
681 case '-' : return (statbuf->st_nlink < ap->links_count);
682 case '+' : return (statbuf->st_nlink > ap->links_count);
683 default: return (statbuf->st_nlink == ap->links_count);
688 static int FAST_FUNC fileAction(const char *fileName,
689 struct stat *statbuf,
690 void *userData UNUSED_PARAM,
691 int depth IF_NOT_FEATURE_FIND_MAXDEPTH(UNUSED_PARAM))
695 #if ENABLE_FEATURE_FIND_MAXDEPTH
696 if (depth < G.minmaxdepth[0])
697 return TRUE; /* skip this, continue recursing */
698 if (depth > G.minmaxdepth[1])
699 return SKIP; /* stop recursing */
702 r = exec_actions(G.actions, fileName, statbuf);
703 /* Had no explicit -print[0] or -exec? then print */
704 if ((r & TRUE) && G.need_print)
707 #if ENABLE_FEATURE_FIND_MAXDEPTH
708 if (S_ISDIR(statbuf->st_mode)) {
709 if (depth == G.minmaxdepth[1])
713 #if ENABLE_FEATURE_FIND_XDEV
714 /* -xdev stops on mountpoints, but AFTER mountpoit itself
715 * is processed as usual */
716 if (S_ISDIR(statbuf->st_mode)) {
719 for (i = 0; i < G.xdev_count; i++) {
720 if (G.xdev_dev[i] == statbuf->st_dev)
729 /* Cannot return 0: our caller, recursive_action(),
730 * will perror() and skip dirs (if called on dir) */
731 return (r & SKIP) ? SKIP : TRUE;
735 #if ENABLE_FEATURE_FIND_TYPE
736 static int find_type(const char *type)
742 else if (*type == 'c')
744 else if (*type == 'd')
746 else if (*type == 'p')
748 else if (*type == 'f')
750 else if (*type == 'l')
752 else if (*type == 's')
755 if (mask == 0 || type[1] != '\0')
756 bb_error_msg_and_die(bb_msg_invalid_arg, type, "-type");
762 #if ENABLE_FEATURE_FIND_PERM \
763 || ENABLE_FEATURE_FIND_MTIME || ENABLE_FEATURE_FIND_MMIN \
764 || ENABLE_FEATURE_FIND_SIZE || ENABLE_FEATURE_FIND_LINKS
765 static const char* plus_minus_num(const char* str)
767 if (*str == '-' || *str == '+')
773 static action*** parse_params(char **argv)
777 IF_FEATURE_FIND_XDEV( OPT_XDEV ,)
778 IF_FEATURE_FIND_DEPTH( OPT_DEPTH ,)
781 IF_FEATURE_FIND_NOT( PARM_char_not ,)
785 IF_FEATURE_FIND_NOT( PARM_not ,)
788 IF_FEATURE_FIND_PRINT0( PARM_print0 ,)
789 IF_FEATURE_FIND_PRUNE( PARM_prune ,)
790 IF_FEATURE_FIND_DELETE( PARM_delete ,)
791 IF_FEATURE_FIND_EXEC( PARM_exec ,)
792 IF_FEATURE_FIND_PAREN( PARM_char_brace,)
793 /* All options/actions starting from here require argument */
796 IF_FEATURE_FIND_PATH( PARM_path ,)
797 IF_FEATURE_FIND_REGEX( PARM_regex ,)
798 IF_FEATURE_FIND_TYPE( PARM_type ,)
799 IF_FEATURE_FIND_PERM( PARM_perm ,)
800 IF_FEATURE_FIND_MTIME( PARM_mtime ,)
801 IF_FEATURE_FIND_MMIN( PARM_mmin ,)
802 IF_FEATURE_FIND_NEWER( PARM_newer ,)
803 IF_FEATURE_FIND_INUM( PARM_inum ,)
804 IF_FEATURE_FIND_USER( PARM_user ,)
805 IF_FEATURE_FIND_GROUP( PARM_group ,)
806 IF_FEATURE_FIND_SIZE( PARM_size ,)
807 IF_FEATURE_FIND_CONTEXT(PARM_context ,)
808 IF_FEATURE_FIND_LINKS( PARM_links ,)
809 IF_FEATURE_FIND_MAXDEPTH(OPT_MINDEPTH,OPT_MAXDEPTH,)
812 static const char params[] ALIGN1 =
814 IF_FEATURE_FIND_XDEV( "-xdev\0" )
815 IF_FEATURE_FIND_DEPTH( "-depth\0" )
818 IF_FEATURE_FIND_NOT( "!\0" )
822 IF_FEATURE_FIND_NOT( "-not\0" )
825 IF_FEATURE_FIND_PRINT0( "-print0\0" )
826 IF_FEATURE_FIND_PRUNE( "-prune\0" )
827 IF_FEATURE_FIND_DELETE( "-delete\0" )
828 IF_FEATURE_FIND_EXEC( "-exec\0" )
829 IF_FEATURE_FIND_PAREN( "(\0" )
830 /* All options/actions starting from here require argument */
833 IF_FEATURE_FIND_PATH( "-path\0" )
834 IF_FEATURE_FIND_REGEX( "-regex\0" )
835 IF_FEATURE_FIND_TYPE( "-type\0" )
836 IF_FEATURE_FIND_PERM( "-perm\0" )
837 IF_FEATURE_FIND_MTIME( "-mtime\0" )
838 IF_FEATURE_FIND_MMIN( "-mmin\0" )
839 IF_FEATURE_FIND_NEWER( "-newer\0" )
840 IF_FEATURE_FIND_INUM( "-inum\0" )
841 IF_FEATURE_FIND_USER( "-user\0" )
842 IF_FEATURE_FIND_GROUP( "-group\0" )
843 IF_FEATURE_FIND_SIZE( "-size\0" )
844 IF_FEATURE_FIND_CONTEXT("-context\0")
845 IF_FEATURE_FIND_LINKS( "-links\0" )
846 IF_FEATURE_FIND_MAXDEPTH("-mindepth\0""-maxdepth\0")
850 unsigned cur_group = 0;
851 unsigned cur_action = 0;
852 IF_FEATURE_FIND_NOT( bool invert_flag = 0; )
854 /* This is the only place in busybox where we use nested function.
855 * So far more standard alternatives were bigger. */
856 /* Auto decl suppresses "func without a prototype" warning: */
857 auto action* alloc_action(int sizeof_struct, action_fp f);
858 action* alloc_action(int sizeof_struct, action_fp f)
861 appp[cur_group] = xrealloc(appp[cur_group], (cur_action+2) * sizeof(*appp));
862 appp[cur_group][cur_action++] = ap = xzalloc(sizeof_struct);
863 appp[cur_group][cur_action] = NULL;
865 IF_FEATURE_FIND_NOT( ap->invert = invert_flag; )
866 IF_FEATURE_FIND_NOT( invert_flag = 0; )
870 #define ALLOC_ACTION(name) (action_##name*)alloc_action(sizeof(action_##name), (action_fp) func_##name)
872 appp = xzalloc(2 * sizeof(appp[0])); /* appp[0],[1] == NULL */
875 const char *arg = argv[0];
876 int parm = index_in_strings(params, arg);
877 const char *arg1 = argv[1];
879 if (parm >= PARM_name) {
880 /* All options/actions starting from -name require argument */
882 bb_error_msg_and_die(bb_msg_requires_arg, arg);
886 /* We can use big switch() here, but on i386
887 * it doesn't give smaller code. Other arches? */
889 /* Options always return true. They always take effect
890 * rather than being processed only when their place in the
891 * expression is reached.
894 #if ENABLE_FEATURE_FIND_XDEV
895 if (parm == OPT_XDEV) {
899 #if ENABLE_FEATURE_FIND_MAXDEPTH
900 else if (parm == OPT_MINDEPTH || parm == OPT_MINDEPTH + 1) {
901 G.minmaxdepth[parm - OPT_MINDEPTH] = xatoi_positive(arg1);
904 #if ENABLE_FEATURE_FIND_DEPTH
905 else if (parm == OPT_DEPTH) {
906 G.recurse_flags |= ACTION_DEPTHFIRST;
909 /* Actions are grouped by operators
910 * ( expr ) Force precedence
911 * ! expr True if expr is false
912 * -not expr Same as ! expr
913 * expr1 [-a[nd]] expr2 And; expr2 is not evaluated if expr1 is false
914 * expr1 -o[r] expr2 Or; expr2 is not evaluated if expr1 is true
915 * expr1 , expr2 List; both expr1 and expr2 are always evaluated
916 * We implement: (), -a, -o
919 else if (parm == PARM_a IF_DESKTOP(|| parm == PARM_and)) {
920 /* no further special handling required */
922 else if (parm == PARM_o IF_DESKTOP(|| parm == PARM_or)) {
923 /* start new OR group */
925 appp = xrealloc(appp, (cur_group+2) * sizeof(*appp));
926 /*appp[cur_group] = NULL; - already NULL */
927 appp[cur_group+1] = NULL;
930 #if ENABLE_FEATURE_FIND_NOT
931 else if (parm == PARM_char_not IF_DESKTOP(|| parm == PARM_not)) {
932 /* also handles "find ! ! -name 'foo*'" */
937 else if (parm == PARM_print) {
939 (void) ALLOC_ACTION(print);
941 #if ENABLE_FEATURE_FIND_PRINT0
942 else if (parm == PARM_print0) {
944 (void) ALLOC_ACTION(print0);
947 #if ENABLE_FEATURE_FIND_PRUNE
948 else if (parm == PARM_prune) {
949 (void) ALLOC_ACTION(prune);
952 #if ENABLE_FEATURE_FIND_DELETE
953 else if (parm == PARM_delete) {
955 G.recurse_flags |= ACTION_DEPTHFIRST;
956 (void) ALLOC_ACTION(delete);
959 #if ENABLE_FEATURE_FIND_EXEC
960 else if (parm == PARM_exec) {
964 ap = ALLOC_ACTION(exec);
965 ap->exec_argv = ++argv; /* first arg after -exec */
966 /*ap->exec_argc = 0; - ALLOC_ACTION did it */
968 if (!*argv) /* did not see ';' or '+' until end */
969 bb_error_msg_and_die(bb_msg_requires_arg, "-exec");
970 // find -exec echo Foo ">{}<" ";"
971 // executes "echo Foo >FILENAME<",
972 // find -exec echo Foo ">{}<" "+"
973 // executes "echo Foo FILENAME1 FILENAME2 FILENAME3...".
974 // TODO (so far we treat "+" just like ";")
975 if ((argv[0][0] == ';' || argv[0][0] == '+')
976 && argv[0][1] == '\0'
983 if (ap->exec_argc == 0)
984 bb_error_msg_and_die(bb_msg_requires_arg, arg);
985 ap->subst_count = xmalloc(ap->exec_argc * sizeof(int));
988 ap->subst_count[i] = count_subst(ap->exec_argv[i]);
991 #if ENABLE_FEATURE_FIND_PAREN
992 else if (parm == PARM_char_brace) {
1000 bb_error_msg_and_die("unpaired '('");
1001 if (LONE_CHAR(*endarg, '('))
1003 else if (LONE_CHAR(*endarg, ')') && !--nested) {
1008 ap = ALLOC_ACTION(paren);
1009 ap->subexpr = parse_params(argv + 1);
1010 *endarg = (char*) ")"; /* restore NULLed parameter */
1014 else if (parm == PARM_name || parm == PARM_iname) {
1016 ap = ALLOC_ACTION(name);
1018 ap->iname = (parm == PARM_iname);
1020 #if ENABLE_FEATURE_FIND_PATH
1021 else if (parm == PARM_path) {
1023 ap = ALLOC_ACTION(path);
1027 #if ENABLE_FEATURE_FIND_REGEX
1028 else if (parm == PARM_regex) {
1030 ap = ALLOC_ACTION(regex);
1031 xregcomp(&ap->compiled_pattern, arg1, 0 /*cflags*/);
1034 #if ENABLE_FEATURE_FIND_TYPE
1035 else if (parm == PARM_type) {
1037 ap = ALLOC_ACTION(type);
1038 ap->type_mask = find_type(arg1);
1041 #if ENABLE_FEATURE_FIND_PERM
1042 /* -perm BITS File's mode bits are exactly BITS (octal or symbolic).
1043 * Symbolic modes use mode 0 as a point of departure.
1044 * -perm -BITS All of the BITS are set in file's mode.
1045 * -perm +BITS At least one of the BITS is set in file's mode.
1047 else if (parm == PARM_perm) {
1049 ap = ALLOC_ACTION(perm);
1050 ap->perm_char = arg1[0];
1051 arg1 = plus_minus_num(arg1);
1052 /*ap->perm_mask = 0; - ALLOC_ACTION did it */
1053 if (!bb_parse_mode(arg1, &ap->perm_mask))
1054 bb_error_msg_and_die("invalid mode '%s'", arg1);
1057 #if ENABLE_FEATURE_FIND_MTIME
1058 else if (parm == PARM_mtime) {
1060 ap = ALLOC_ACTION(mtime);
1061 ap->mtime_char = arg1[0];
1062 ap->mtime_days = xatoul(plus_minus_num(arg1));
1065 #if ENABLE_FEATURE_FIND_MMIN
1066 else if (parm == PARM_mmin) {
1068 ap = ALLOC_ACTION(mmin);
1069 ap->mmin_char = arg1[0];
1070 ap->mmin_mins = xatoul(plus_minus_num(arg1));
1073 #if ENABLE_FEATURE_FIND_NEWER
1074 else if (parm == PARM_newer) {
1075 struct stat stat_newer;
1077 ap = ALLOC_ACTION(newer);
1078 xstat(arg1, &stat_newer);
1079 ap->newer_mtime = stat_newer.st_mtime;
1082 #if ENABLE_FEATURE_FIND_INUM
1083 else if (parm == PARM_inum) {
1085 ap = ALLOC_ACTION(inum);
1086 ap->inode_num = xatoul(arg1);
1089 #if ENABLE_FEATURE_FIND_USER
1090 else if (parm == PARM_user) {
1092 ap = ALLOC_ACTION(user);
1093 ap->uid = bb_strtou(arg1, NULL, 10);
1095 ap->uid = xuname2uid(arg1);
1098 #if ENABLE_FEATURE_FIND_GROUP
1099 else if (parm == PARM_group) {
1101 ap = ALLOC_ACTION(group);
1102 ap->gid = bb_strtou(arg1, NULL, 10);
1104 ap->gid = xgroup2gid(arg1);
1107 #if ENABLE_FEATURE_FIND_SIZE
1108 else if (parm == PARM_size) {
1109 /* -size n[bckw]: file uses n units of space
1110 * b (default): units are 512-byte blocks
1116 #define XATOU_SFX xatoull_sfx
1118 #define XATOU_SFX xatoul_sfx
1120 static const struct suffix_mult find_suffixes[] = {
1129 ap = ALLOC_ACTION(size);
1130 ap->size_char = arg1[0];
1131 ap->size = XATOU_SFX(plus_minus_num(arg1), find_suffixes);
1134 #if ENABLE_FEATURE_FIND_CONTEXT
1135 else if (parm == PARM_context) {
1137 ap = ALLOC_ACTION(context);
1138 /*ap->context = NULL; - ALLOC_ACTION did it */
1139 /* SELinux headers erroneously declare non-const parameter */
1140 if (selinux_raw_to_trans_context((char*)arg1, &ap->context))
1141 bb_simple_perror_msg(arg1);
1144 #if ENABLE_FEATURE_FIND_LINKS
1145 else if (parm == PARM_links) {
1147 ap = ALLOC_ACTION(links);
1148 ap->links_char = arg1[0];
1149 ap->links_count = xatoul(plus_minus_num(arg1));
1153 bb_error_msg("unrecognized: %s", arg);
1162 int find_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
1163 int find_main(int argc UNUSED_PARAM, char **argv)
1165 int i, firstopt, status = EXIT_SUCCESS;
1170 for (firstopt = 0; argv[firstopt]; firstopt++) {
1171 if (argv[firstopt][0] == '-')
1173 if (ENABLE_FEATURE_FIND_NOT && LONE_CHAR(argv[firstopt], '!'))
1175 if (ENABLE_FEATURE_FIND_PAREN && LONE_CHAR(argv[firstopt], '('))
1178 if (firstopt == 0) {
1179 *--argv = (char*)".";
1183 G.actions = parse_params(&argv[firstopt]);
1184 argv[firstopt] = NULL;
1186 #if ENABLE_FEATURE_FIND_XDEV
1190 G.xdev_count = firstopt;
1191 G.xdev_dev = xzalloc(G.xdev_count * sizeof(G.xdev_dev[0]));
1192 for (i = 0; argv[i]; i++) {
1193 /* not xstat(): shouldn't bomb out on
1194 * "find not_exist exist -xdev" */
1195 if (stat(argv[i], &stbuf) == 0)
1196 G.xdev_dev[i] = stbuf.st_dev;
1197 /* else G.xdev_dev[i] stays 0 and
1198 * won't match any real device dev_t
1204 for (i = 0; argv[i]; i++) {
1205 if (!recursive_action(argv[i],
1206 G.recurse_flags,/* flags */
1207 fileAction, /* file action */
1208 fileAction, /* dir action */
1209 NULL, /* user data */
1212 status = EXIT_FAILURE;