summaryrefslogtreecommitdiff
path: root/findutils/find.c (plain)
blob: 4c9f9d8a17817413f81b2d574c4eb60529e88d1a
1/* vi: set sw=4 ts=4: */
2/*
3 * Mini find implementation for busybox
4 *
5 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
6 *
7 * Reworked by David Douthitt <n9ubh@callsign.net> and
8 * Matt Kraai <kraai@alumni.carnegiemellon.edu>.
9 *
10 * Licensed under GPLv2, see file LICENSE in this source tree.
11 */
12
13/* findutils-4.1.20:
14 *
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' '{} {}' ';'
24 * file.txt file.txt
25 * (strace: execve("/bin/echo", ["echo", "file.txt file.txt"], [ 30 vars ]))
26 * # find file.txt -exec 'echo' '{} {}' ';' -print -exec pwd ';'
27 * file.txt file.txt
28 * file.txt
29 * /tmp
30 * # find -name '*.c' -o -name '*.h'
31 * [shows files, *.c and *.h intermixed]
32 * # find file.txt -name '*f*' -o -name '*t*'
33 * file.txt
34 * # find file.txt -name '*z*' -o -name '*t*'
35 * file.txt
36 * # find file.txt -name '*f*' -o -name '*z*'
37 * file.txt
38 *
39 * # find t z -name '*t*' -print -o -name '*z*'
40 * t
41 * # find t z t z -name '*t*' -o -name '*z*' -print
42 * z
43 * z
44 * # find t z t z '(' -name '*t*' -o -name '*z*' ')' -o -print
45 * (no output)
46 */
47
48/* Testing script
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
54 */
55
56//config:config FIND
57//config: bool "find"
58//config: default y
59//config: help
60//config: find is used to search your system to find specified files.
61//config:
62//config:config FEATURE_FIND_PRINT0
63//config: bool "Enable -print0: NUL-terminated output"
64//config: default y
65//config: depends on FIND
66//config: help
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.
71//config:
72//config:config FEATURE_FIND_MTIME
73//config: bool "Enable -mtime: modified time matching"
74//config: default y
75//config: depends on FIND
76//config: help
77//config: Allow searching based on the modification time of
78//config: files, in days.
79//config:
80//config:config FEATURE_FIND_MMIN
81//config: bool "Enable -mmin: modified time matching by minutes"
82//config: default y
83//config: depends on FIND
84//config: help
85//config: Allow searching based on the modification time of
86//config: files, in minutes.
87//config:
88//config:config FEATURE_FIND_PERM
89//config: bool "Enable -perm: permissions matching"
90//config: default y
91//config: depends on FIND
92//config: help
93//config: Enable searching based on file permissions.
94//config:
95//config:config FEATURE_FIND_TYPE
96//config: bool "Enable -type: file type matching (file/dir/link/...)"
97//config: default y
98//config: depends on FIND
99//config: help
100//config: Enable searching based on file type (file,
101//config: directory, socket, device, etc.).
102//config:
103//config:config FEATURE_FIND_XDEV
104//config: bool "Enable -xdev: 'stay in filesystem'"
105//config: default y
106//config: depends on FIND
107//config: help
108//config: This option allows find to restrict searches to a single filesystem.
109//config:
110//config:config FEATURE_FIND_MAXDEPTH
111//config: bool "Enable -mindepth N and -maxdepth N"
112//config: default y
113//config: depends on FIND
114//config: help
115//config: This option enables -mindepth N and -maxdepth N option.
116//config:
117//config:config FEATURE_FIND_NEWER
118//config: bool "Enable -newer: compare file modification times"
119//config: default y
120//config: depends on FIND
121//config: help
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.
124//config:
125//config:config FEATURE_FIND_INUM
126//config: bool "Enable -inum: inode number matching"
127//config: default y
128//config: depends on FIND
129//config: help
130//config: Support the 'find -inum' option for searching by inode number.
131//config:
132//config:config FEATURE_FIND_EXEC
133//config: bool "Enable -exec: execute commands"
134//config: default y
135//config: depends on FIND
136//config: help
137//config: Support the 'find -exec' option for executing commands based upon
138//config: the files matched.
139//config:
140//config:config FEATURE_FIND_USER
141//config: bool "Enable -user: username/uid matching"
142//config: default y
143//config: depends on FIND
144//config: help
145//config: Support the 'find -user' option for searching by username or uid.
146//config:
147//config:config FEATURE_FIND_GROUP
148//config: bool "Enable -group: group/gid matching"
149//config: default y
150//config: depends on FIND
151//config: help
152//config: Support the 'find -group' option for searching by group name or gid.
153//config:
154//config:config FEATURE_FIND_NOT
155//config: bool "Enable the 'not' (!) operator"
156//config: default y
157//config: depends on FIND
158//config: help
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'.
162//config:
163//config:config FEATURE_FIND_DEPTH
164//config: bool "Enable -depth"
165//config: default y
166//config: depends on FIND
167//config: help
168//config: Process each directory's contents before the directory itself.
169//config:
170//config:config FEATURE_FIND_PAREN
171//config: bool "Enable parens in options"
172//config: default y
173//config: depends on FIND
174//config: help
175//config: Enable usage of parens '(' to specify logical order of arguments.
176//config:
177//config:config FEATURE_FIND_SIZE
178//config: bool "Enable -size: file size matching"
179//config: default y
180//config: depends on FIND
181//config: help
182//config: Support the 'find -size' option for searching by file size.
183//config:
184//config:config FEATURE_FIND_PRUNE
185//config: bool "Enable -prune: exclude subdirectories"
186//config: default y
187//config: depends on FIND
188//config: help
189//config: If the file is a directory, dont descend into it. Useful for
190//config: exclusion .svn and CVS directories.
191//config:
192//config:config FEATURE_FIND_DELETE
193//config: bool "Enable -delete: delete files/dirs"
194//config: default y
195//config: depends on FIND && FEATURE_FIND_DEPTH
196//config: help
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.
200//config:
201//config:config FEATURE_FIND_PATH
202//config: bool "Enable -path: match pathname with shell pattern"
203//config: default y
204//config: depends on FIND
205//config: help
206//config: The -path option matches whole pathname instead of just filename.
207//config:
208//config:config FEATURE_FIND_REGEX
209//config: bool "Enable -regex: match pathname with regex"
210//config: default y
211//config: depends on FIND
212//config: help
213//config: The -regex option matches whole pathname against regular expression.
214//config:
215//config:config FEATURE_FIND_CONTEXT
216//config: bool "Enable -context: security context matching"
217//config: default n
218//config: depends on FIND && SELINUX
219//config: help
220//config: Support the 'find -context' option for matching security context.
221//config:
222//config:config FEATURE_FIND_LINKS
223//config: bool "Enable -links: link count matching"
224//config: default y
225//config: depends on FIND
226//config: help
227//config: Support the 'find -links' option for matching number of links.
228
229//applet:IF_FIND(APPLET_NOEXEC(find, find, BB_DIR_USR_BIN, BB_SUID_DROP, find))
230
231//kbuild:lib-$(CONFIG_FIND) += find.o
232
233//usage:#define find_trivial_usage
234//usage: "[-HL] [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: "\n -L,-follow Follow symlinks"
240//usage: "\n -H ...on command line only"
241//usage: IF_FEATURE_FIND_XDEV(
242//usage: "\n -xdev Don't descend directories on other filesystems"
243//usage: )
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"
248//usage: )
249//usage: IF_FEATURE_FIND_DEPTH(
250//usage: "\n -depth Act on directory *after* traversing it"
251//usage: )
252//usage: "\n"
253//usage: "\nActions:"
254//usage: IF_FEATURE_FIND_PAREN(
255//usage: "\n ( ACTIONS ) Group actions for -o / -a"
256//usage: )
257//usage: IF_FEATURE_FIND_NOT(
258//usage: "\n ! ACT Invert ACT's success/failure"
259//usage: )
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"
267//usage: "\n -ipath PATTERN Case insensitive -path"
268//usage: )
269//usage: IF_FEATURE_FIND_REGEX(
270//usage: "\n -regex PATTERN Match path to regex PATTERN"
271//usage: )
272//usage: IF_FEATURE_FIND_TYPE(
273//usage: "\n -type X File type is X (one of: f,d,l,b,c,...)"
274//usage: )
275//usage: IF_FEATURE_FIND_PERM(
276//usage: "\n -perm MASK At least one mask bit (+MASK), all bits (-MASK),"
277//usage: "\n or exactly MASK bits are set in file's mode"
278//usage: )
279//usage: IF_FEATURE_FIND_MTIME(
280//usage: "\n -mtime DAYS mtime is greater than (+N), less than (-N),"
281//usage: "\n or exactly N days in the past"
282//usage: )
283//usage: IF_FEATURE_FIND_MMIN(
284//usage: "\n -mmin MINS mtime is greater than (+N), less than (-N),"
285//usage: "\n or exactly N minutes in the past"
286//usage: )
287//usage: IF_FEATURE_FIND_NEWER(
288//usage: "\n -newer FILE mtime is more recent than FILE's"
289//usage: )
290//usage: IF_FEATURE_FIND_INUM(
291//usage: "\n -inum N File has inode number N"
292//usage: )
293//usage: IF_FEATURE_FIND_USER(
294//usage: "\n -user NAME/ID File is owned by given user"
295//usage: )
296//usage: IF_FEATURE_FIND_GROUP(
297//usage: "\n -group NAME/ID File is owned by given group"
298//usage: )
299//usage: IF_FEATURE_FIND_SIZE(
300//usage: "\n -size N[bck] File size is N (c:bytes,k:kbytes,b:512 bytes(def.))"
301//usage: "\n +/-N: file size is bigger/smaller than N"
302//usage: )
303//usage: IF_FEATURE_FIND_LINKS(
304//usage: "\n -links N Number of links is greater than (+N), less than (-N),"
305//usage: "\n or exactly N"
306//usage: )
307//usage: IF_FEATURE_FIND_CONTEXT(
308//usage: "\n -context CTX File has specified security context"
309//usage: )
310//usage: IF_FEATURE_FIND_PRUNE(
311//usage: "\n -prune If current file is directory, don't descend into it"
312//usage: )
313//usage: "\nIf none of the following actions is specified, -print is assumed"
314//usage: "\n -print Print file name"
315//usage: IF_FEATURE_FIND_PRINT0(
316//usage: "\n -print0 Print file name, NUL terminated"
317//usage: )
318//usage: IF_FEATURE_FIND_EXEC(
319//usage: "\n -exec CMD ARG ; Run CMD with all instances of {} replaced by"
320//usage: "\n file name. Fails if CMD exits with nonzero"
321//usage: )
322//usage: IF_FEATURE_FIND_DELETE(
323//usage: "\n -delete Delete current file/directory. Turns on -depth option"
324//usage: )
325//usage:
326//usage:#define find_example_usage
327//usage: "$ find / -name passwd\n"
328//usage: "/etc/passwd\n"
329
330#include <fnmatch.h>
331#include "libbb.h"
332#if ENABLE_FEATURE_FIND_REGEX
333# include "xregex.h"
334#endif
335/* GNUism: */
336#ifndef FNM_CASEFOLD
337# define FNM_CASEFOLD 0
338#endif
339
340#define dbg(...) ((void)0)
341/* #define dbg(...) bb_error_msg(__VA_ARGS__) */
342
343/* This is a NOEXEC applet. Be very careful! */
344
345
346typedef int (*action_fp)(const char *fileName, const struct stat *statbuf, void *) FAST_FUNC;
347
348typedef struct {
349 action_fp f;
350#if ENABLE_FEATURE_FIND_NOT
351 bool invert;
352#endif
353} action;
354
355#define ACTS(name, ...) typedef struct { action a; __VA_ARGS__ } action_##name;
356#define ACTF(name) \
357 static int FAST_FUNC func_##name(const char *fileName UNUSED_PARAM, \
358 const struct stat *statbuf UNUSED_PARAM, \
359 action_##name* ap UNUSED_PARAM)
360
361 ACTS(print)
362 ACTS(name, const char *pattern; bool iname;)
363IF_FEATURE_FIND_PATH( ACTS(path, const char *pattern; bool ipath;))
364IF_FEATURE_FIND_REGEX( ACTS(regex, regex_t compiled_pattern;))
365IF_FEATURE_FIND_PRINT0( ACTS(print0))
366IF_FEATURE_FIND_TYPE( ACTS(type, int type_mask;))
367IF_FEATURE_FIND_PERM( ACTS(perm, char perm_char; mode_t perm_mask;))
368IF_FEATURE_FIND_MTIME( ACTS(mtime, char mtime_char; unsigned mtime_days;))
369IF_FEATURE_FIND_MMIN( ACTS(mmin, char mmin_char; unsigned mmin_mins;))
370IF_FEATURE_FIND_NEWER( ACTS(newer, time_t newer_mtime;))
371IF_FEATURE_FIND_INUM( ACTS(inum, ino_t inode_num;))
372IF_FEATURE_FIND_USER( ACTS(user, uid_t uid;))
373IF_FEATURE_FIND_SIZE( ACTS(size, char size_char; filesize_t size;))
374IF_FEATURE_FIND_CONTEXT(ACTS(context, security_context_t context;))
375IF_FEATURE_FIND_PAREN( ACTS(paren, action ***subexpr;))
376IF_FEATURE_FIND_PRUNE( ACTS(prune))
377IF_FEATURE_FIND_DELETE( ACTS(delete))
378IF_FEATURE_FIND_EXEC( ACTS(exec, char **exec_argv; unsigned *subst_count; int exec_argc;))
379IF_FEATURE_FIND_GROUP( ACTS(group, gid_t gid;))
380IF_FEATURE_FIND_LINKS( ACTS(links, char links_char; unsigned links_count;))
381
382struct globals {
383 IF_FEATURE_FIND_XDEV(dev_t *xdev_dev;)
384 IF_FEATURE_FIND_XDEV(int xdev_count;)
385#if ENABLE_FEATURE_FIND_MAXDEPTH
386 int minmaxdepth[2];
387#endif
388 action ***actions;
389 smallint need_print;
390 smallint xdev_on;
391 recurse_flags_t recurse_flags;
392} FIX_ALIASING;
393#define G (*(struct globals*)&bb_common_bufsiz1)
394#define INIT_G() do { \
395 struct G_sizecheck { \
396 char G_sizecheck[sizeof(G) > COMMON_BUFSIZE ? -1 : 1]; \
397 }; \
398 /* we have to zero it out because of NOEXEC */ \
399 memset(&G, 0, sizeof(G)); \
400 IF_FEATURE_FIND_MAXDEPTH(G.minmaxdepth[1] = INT_MAX;) \
401 G.need_print = 1; \
402 G.recurse_flags = ACTION_RECURSE; \
403} while (0)
404
405#if ENABLE_FEATURE_FIND_EXEC
406static unsigned count_subst(const char *str)
407{
408 unsigned count = 0;
409 while ((str = strstr(str, "{}")) != NULL) {
410 count++;
411 str++;
412 }
413 return count;
414}
415
416
417static char* subst(const char *src, unsigned count, const char* filename)
418{
419 char *buf, *dst, *end;
420 size_t flen = strlen(filename);
421 /* we replace each '{}' with filename: growth by strlen-2 */
422 buf = dst = xmalloc(strlen(src) + count*(flen-2) + 1);
423 while ((end = strstr(src, "{}"))) {
424 memcpy(dst, src, end - src);
425 dst += end - src;
426 src = end + 2;
427 memcpy(dst, filename, flen);
428 dst += flen;
429 }
430 strcpy(dst, src);
431 return buf;
432}
433#endif
434
435/* Return values of ACTFs ('action functions') are a bit mask:
436 * bit 1=1: prune (use SKIP constant for setting it)
437 * bit 0=1: matched successfully (TRUE)
438 */
439
440static int exec_actions(action ***appp, const char *fileName, const struct stat *statbuf)
441{
442 int cur_group;
443 int cur_action;
444 int rc = 0;
445 action **app, *ap;
446
447 /* "action group" is a set of actions ANDed together.
448 * groups are ORed together.
449 * We simply evaluate each group until we find one in which all actions
450 * succeed. */
451
452 /* -prune is special: if it is encountered, then we won't
453 * descend into current directory. It doesn't matter whether
454 * action group (in which -prune sits) will succeed or not:
455 * find * -prune -name 'f*' -o -name 'm*' -- prunes every dir
456 * find * -name 'f*' -o -prune -name 'm*' -- prunes all dirs
457 * not starting with 'f' */
458
459 /* We invert TRUE bit (bit 0). Now 1 there means 'failure'.
460 * and bitwise OR in "rc |= TRUE ^ ap->f()" will:
461 * (1) make SKIP (-prune) bit stick; and (2) detect 'failure'.
462 * On return, bit is restored. */
463
464 cur_group = -1;
465 while ((app = appp[++cur_group]) != NULL) {
466 rc &= ~TRUE; /* 'success' so far, clear TRUE bit */
467 cur_action = -1;
468 while (1) {
469 ap = app[++cur_action];
470 if (!ap) /* all actions in group were successful */
471 return rc ^ TRUE; /* restore TRUE bit */
472 rc |= TRUE ^ ap->f(fileName, statbuf, ap);
473#if ENABLE_FEATURE_FIND_NOT
474 if (ap->invert) rc ^= TRUE;
475#endif
476 dbg("grp %d action %d rc:0x%x", cur_group, cur_action, rc);
477 if (rc & TRUE) /* current group failed, try next */
478 break;
479 }
480 }
481 dbg("returning:0x%x", rc ^ TRUE);
482 return rc ^ TRUE; /* restore TRUE bit */
483}
484
485
486#if !FNM_CASEFOLD
487static char *strcpy_upcase(char *dst, const char *src)
488{
489 char *d = dst;
490 while (1) {
491 unsigned char ch = *src++;
492 if (ch >= 'a' && ch <= 'z')
493 ch -= ('a' - 'A');
494 *d++ = ch;
495 if (ch == '\0')
496 break;
497 }
498 return dst;
499}
500#endif
501
502ACTF(name)
503{
504 const char *tmp = bb_basename(fileName);
505 if (tmp != fileName && *tmp == '\0') {
506 /* "foo/bar/". Oh no... go back to 'b' */
507 tmp--;
508 while (tmp != fileName && *--tmp != '/')
509 continue;
510 if (*tmp == '/')
511 tmp++;
512 }
513 /* Was using FNM_PERIOD flag too,
514 * but somewhere between 4.1.20 and 4.4.0 GNU find stopped using it.
515 * find -name '*foo' should match .foo too:
516 */
517#if FNM_CASEFOLD
518 return fnmatch(ap->pattern, tmp, (ap->iname ? FNM_CASEFOLD : 0)) == 0;
519#else
520 if (ap->iname)
521 tmp = strcpy_upcase(alloca(strlen(tmp) + 1), tmp);
522 return fnmatch(ap->pattern, tmp, 0) == 0;
523#endif
524}
525
526#if ENABLE_FEATURE_FIND_PATH
527ACTF(path)
528{
529# if FNM_CASEFOLD
530 return fnmatch(ap->pattern, fileName, (ap->ipath ? FNM_CASEFOLD : 0)) == 0;
531# else
532 if (ap->ipath)
533 fileName = strcpy_upcase(alloca(strlen(fileName) + 1), fileName);
534 return fnmatch(ap->pattern, fileName, 0) == 0;
535# endif
536}
537#endif
538#if ENABLE_FEATURE_FIND_REGEX
539ACTF(regex)
540{
541 regmatch_t match;
542 if (regexec(&ap->compiled_pattern, fileName, 1, &match, 0 /*eflags*/))
543 return 0; /* no match */
544 if (match.rm_so)
545 return 0; /* match doesn't start at pos 0 */
546 if (fileName[match.rm_eo])
547 return 0; /* match doesn't end exactly at end of pathname */
548 return 1;
549}
550#endif
551#if ENABLE_FEATURE_FIND_TYPE
552ACTF(type)
553{
554 return ((statbuf->st_mode & S_IFMT) == (unsigned) ap->type_mask);
555}
556#endif
557#if ENABLE_FEATURE_FIND_PERM
558ACTF(perm)
559{
560 /* -perm +mode: at least one of perm_mask bits are set */
561 if (ap->perm_char == '+')
562 return (statbuf->st_mode & ap->perm_mask) != 0;
563 /* -perm -mode: all of perm_mask are set */
564 if (ap->perm_char == '-')
565 return (statbuf->st_mode & ap->perm_mask) == ap->perm_mask;
566 /* -perm mode: file mode must match perm_mask */
567 return (statbuf->st_mode & 07777) == ap->perm_mask;
568}
569#endif
570#if ENABLE_FEATURE_FIND_MTIME
571ACTF(mtime)
572{
573 time_t file_age = time(NULL) - statbuf->st_mtime;
574 time_t mtime_secs = ap->mtime_days * 24*60*60;
575 if (ap->mtime_char == '+')
576 return file_age >= mtime_secs + 24*60*60;
577 if (ap->mtime_char == '-')
578 return file_age < mtime_secs;
579 /* just numeric mtime */
580 return file_age >= mtime_secs && file_age < (mtime_secs + 24*60*60);
581}
582#endif
583#if ENABLE_FEATURE_FIND_MMIN
584ACTF(mmin)
585{
586 time_t file_age = time(NULL) - statbuf->st_mtime;
587 time_t mmin_secs = ap->mmin_mins * 60;
588 if (ap->mmin_char == '+')
589 return file_age >= mmin_secs + 60;
590 if (ap->mmin_char == '-')
591 return file_age < mmin_secs;
592 /* just numeric mmin */
593 return file_age >= mmin_secs && file_age < (mmin_secs + 60);
594}
595#endif
596#if ENABLE_FEATURE_FIND_NEWER
597ACTF(newer)
598{
599 return ((time_t) ap->newer_mtime < (time_t) statbuf->st_mtime);
600}
601#endif
602#if ENABLE_FEATURE_FIND_INUM
603ACTF(inum)
604{
605 return (statbuf->st_ino == ap->inode_num);
606}
607#endif
608#if ENABLE_FEATURE_FIND_EXEC
609ACTF(exec)
610{
611 int i, rc;
612#if ENABLE_USE_PORTABLE_CODE
613 char **argv = alloca(sizeof(char*) * (ap->exec_argc + 1));
614#else /* gcc 4.3.1 generates smaller code: */
615 char *argv[ap->exec_argc + 1];
616#endif
617 for (i = 0; i < ap->exec_argc; i++)
618 argv[i] = subst(ap->exec_argv[i], ap->subst_count[i], fileName);
619 argv[i] = NULL; /* terminate the list */
620
621 rc = spawn_and_wait(argv);
622 if (rc < 0)
623 bb_simple_perror_msg(argv[0]);
624
625 i = 0;
626 while (argv[i])
627 free(argv[i++]);
628 return rc == 0; /* return 1 if exitcode 0 */
629}
630#endif
631#if ENABLE_FEATURE_FIND_USER
632ACTF(user)
633{
634 return (statbuf->st_uid == ap->uid);
635}
636#endif
637#if ENABLE_FEATURE_FIND_GROUP
638ACTF(group)
639{
640 return (statbuf->st_gid == ap->gid);
641}
642#endif
643#if ENABLE_FEATURE_FIND_PRINT0
644ACTF(print0)
645{
646 printf("%s%c", fileName, '\0');
647 return TRUE;
648}
649#endif
650ACTF(print)
651{
652 puts(fileName);
653 return TRUE;
654}
655#if ENABLE_FEATURE_FIND_PAREN
656ACTF(paren)
657{
658 return exec_actions(ap->subexpr, fileName, statbuf);
659}
660#endif
661#if ENABLE_FEATURE_FIND_SIZE
662ACTF(size)
663{
664 if (ap->size_char == '+')
665 return statbuf->st_size > ap->size;
666 if (ap->size_char == '-')
667 return statbuf->st_size < ap->size;
668 return statbuf->st_size == ap->size;
669}
670#endif
671#if ENABLE_FEATURE_FIND_PRUNE
672/*
673 * -prune: if -depth is not given, return true and do not descend
674 * current dir; if -depth is given, return false with no effect.
675 * Example:
676 * find dir -name 'asm-*' -prune -o -name '*.[chS]' -print
677 */
678ACTF(prune)
679{
680 return SKIP + TRUE;
681}
682#endif
683#if ENABLE_FEATURE_FIND_DELETE
684ACTF(delete)
685{
686 int rc;
687 if (S_ISDIR(statbuf->st_mode)) {
688 rc = rmdir(fileName);
689 } else {
690 rc = unlink(fileName);
691 }
692 if (rc < 0)
693 bb_simple_perror_msg(fileName);
694 return TRUE;
695}
696#endif
697#if ENABLE_FEATURE_FIND_CONTEXT
698ACTF(context)
699{
700 security_context_t con;
701 int rc;
702
703 if (G.recurse_flags & ACTION_FOLLOWLINKS) {
704 rc = getfilecon(fileName, &con);
705 } else {
706 rc = lgetfilecon(fileName, &con);
707 }
708 if (rc < 0)
709 return FALSE;
710 rc = strcmp(ap->context, con);
711 freecon(con);
712 return rc == 0;
713}
714#endif
715#if ENABLE_FEATURE_FIND_LINKS
716ACTF(links)
717{
718 switch(ap->links_char) {
719 case '-' : return (statbuf->st_nlink < ap->links_count);
720 case '+' : return (statbuf->st_nlink > ap->links_count);
721 default: return (statbuf->st_nlink == ap->links_count);
722 }
723}
724#endif
725
726static int FAST_FUNC fileAction(const char *fileName,
727 struct stat *statbuf,
728 void *userData UNUSED_PARAM,
729 int depth IF_NOT_FEATURE_FIND_MAXDEPTH(UNUSED_PARAM))
730{
731 int r;
732 int same_fs = 1;
733
734#if ENABLE_FEATURE_FIND_XDEV
735 if (S_ISDIR(statbuf->st_mode) && G.xdev_count) {
736 int i;
737 for (i = 0; i < G.xdev_count; i++) {
738 if (G.xdev_dev[i] == statbuf->st_dev)
739 goto found;
740 }
741 //bb_error_msg("'%s': not same fs", fileName);
742 same_fs = 0;
743 found: ;
744 }
745#endif
746
747#if ENABLE_FEATURE_FIND_MAXDEPTH
748 if (depth < G.minmaxdepth[0]) {
749 if (same_fs)
750 return TRUE; /* skip this, continue recursing */
751 return SKIP; /* stop recursing */
752 }
753 if (depth > G.minmaxdepth[1])
754 return SKIP; /* stop recursing */
755#endif
756
757 r = exec_actions(G.actions, fileName, statbuf);
758 /* Had no explicit -print[0] or -exec? then print */
759 if ((r & TRUE) && G.need_print)
760 puts(fileName);
761
762#if ENABLE_FEATURE_FIND_MAXDEPTH
763 if (S_ISDIR(statbuf->st_mode)) {
764 if (depth == G.minmaxdepth[1])
765 return SKIP;
766 }
767#endif
768 /* -xdev stops on mountpoints, but AFTER mountpoit itself
769 * is processed as usual */
770 if (!same_fs) {
771 return SKIP;
772 }
773
774 /* Cannot return 0: our caller, recursive_action(),
775 * will perror() and skip dirs (if called on dir) */
776 return (r & SKIP) ? SKIP : TRUE;
777}
778
779
780#if ENABLE_FEATURE_FIND_TYPE
781static int find_type(const char *type)
782{
783 int mask = 0;
784
785 if (*type == 'b')
786 mask = S_IFBLK;
787 else if (*type == 'c')
788 mask = S_IFCHR;
789 else if (*type == 'd')
790 mask = S_IFDIR;
791 else if (*type == 'p')
792 mask = S_IFIFO;
793 else if (*type == 'f')
794 mask = S_IFREG;
795 else if (*type == 'l')
796 mask = S_IFLNK;
797 else if (*type == 's')
798 mask = S_IFSOCK;
799
800 if (mask == 0 || type[1] != '\0')
801 bb_error_msg_and_die(bb_msg_invalid_arg, type, "-type");
802
803 return mask;
804}
805#endif
806
807#if ENABLE_FEATURE_FIND_PERM \
808 || ENABLE_FEATURE_FIND_MTIME || ENABLE_FEATURE_FIND_MMIN \
809 || ENABLE_FEATURE_FIND_SIZE || ENABLE_FEATURE_FIND_LINKS
810static const char* plus_minus_num(const char* str)
811{
812 if (*str == '-' || *str == '+')
813 str++;
814 return str;
815}
816#endif
817
818/* Say no to GCCism */
819#define USE_NESTED_FUNCTION 0
820
821#if !USE_NESTED_FUNCTION
822struct pp_locals {
823 action*** appp;
824 unsigned cur_group;
825 unsigned cur_action;
826 IF_FEATURE_FIND_NOT( bool invert_flag; )
827};
828static action* alloc_action(struct pp_locals *ppl, int sizeof_struct, action_fp f)
829{
830 action *ap = xzalloc(sizeof_struct);
831 action **app;
832 action ***group = &ppl->appp[ppl->cur_group];
833 *group = app = xrealloc(*group, (ppl->cur_action+2) * sizeof(ppl->appp[0][0]));
834 app[ppl->cur_action++] = ap;
835 app[ppl->cur_action] = NULL;
836 ap->f = f;
837 IF_FEATURE_FIND_NOT( ap->invert = ppl->invert_flag; )
838 IF_FEATURE_FIND_NOT( ppl->invert_flag = 0; )
839 return ap;
840}
841#endif
842
843static action*** parse_params(char **argv)
844{
845 enum {
846 OPT_FOLLOW ,
847 IF_FEATURE_FIND_XDEV( OPT_XDEV ,)
848 IF_FEATURE_FIND_DEPTH( OPT_DEPTH ,)
849 PARM_a ,
850 PARM_o ,
851 IF_FEATURE_FIND_NOT( PARM_char_not ,)
852#if ENABLE_DESKTOP
853 PARM_and ,
854 PARM_or ,
855 IF_FEATURE_FIND_NOT( PARM_not ,)
856#endif
857 PARM_print ,
858 IF_FEATURE_FIND_PRINT0( PARM_print0 ,)
859 IF_FEATURE_FIND_PRUNE( PARM_prune ,)
860 IF_FEATURE_FIND_DELETE( PARM_delete ,)
861 IF_FEATURE_FIND_EXEC( PARM_exec ,)
862 IF_FEATURE_FIND_PAREN( PARM_char_brace,)
863 /* All options/actions starting from here require argument */
864 PARM_name ,
865 PARM_iname ,
866 IF_FEATURE_FIND_PATH( PARM_path ,)
867#if ENABLE_DESKTOP
868 /* -wholename is a synonym for -path */
869 /* We support it because Linux kernel's "make tags" uses it */
870 IF_FEATURE_FIND_PATH( PARM_wholename ,)
871#endif
872 IF_FEATURE_FIND_PATH( PARM_ipath ,)
873 IF_FEATURE_FIND_REGEX( PARM_regex ,)
874 IF_FEATURE_FIND_TYPE( PARM_type ,)
875 IF_FEATURE_FIND_PERM( PARM_perm ,)
876 IF_FEATURE_FIND_MTIME( PARM_mtime ,)
877 IF_FEATURE_FIND_MMIN( PARM_mmin ,)
878 IF_FEATURE_FIND_NEWER( PARM_newer ,)
879 IF_FEATURE_FIND_INUM( PARM_inum ,)
880 IF_FEATURE_FIND_USER( PARM_user ,)
881 IF_FEATURE_FIND_GROUP( PARM_group ,)
882 IF_FEATURE_FIND_SIZE( PARM_size ,)
883 IF_FEATURE_FIND_CONTEXT(PARM_context ,)
884 IF_FEATURE_FIND_LINKS( PARM_links ,)
885 IF_FEATURE_FIND_MAXDEPTH(OPT_MINDEPTH,OPT_MAXDEPTH,)
886 };
887
888 static const char params[] ALIGN1 =
889 "-follow\0"
890 IF_FEATURE_FIND_XDEV( "-xdev\0" )
891 IF_FEATURE_FIND_DEPTH( "-depth\0" )
892 "-a\0"
893 "-o\0"
894 IF_FEATURE_FIND_NOT( "!\0" )
895#if ENABLE_DESKTOP
896 "-and\0"
897 "-or\0"
898 IF_FEATURE_FIND_NOT( "-not\0" )
899#endif
900 "-print\0"
901 IF_FEATURE_FIND_PRINT0( "-print0\0" )
902 IF_FEATURE_FIND_PRUNE( "-prune\0" )
903 IF_FEATURE_FIND_DELETE( "-delete\0" )
904 IF_FEATURE_FIND_EXEC( "-exec\0" )
905 IF_FEATURE_FIND_PAREN( "(\0" )
906 /* All options/actions starting from here require argument */
907 "-name\0"
908 "-iname\0"
909 IF_FEATURE_FIND_PATH( "-path\0" )
910#if ENABLE_DESKTOP
911 IF_FEATURE_FIND_PATH( "-wholename\0")
912#endif
913 IF_FEATURE_FIND_PATH( "-ipath\0" )
914 IF_FEATURE_FIND_REGEX( "-regex\0" )
915 IF_FEATURE_FIND_TYPE( "-type\0" )
916 IF_FEATURE_FIND_PERM( "-perm\0" )
917 IF_FEATURE_FIND_MTIME( "-mtime\0" )
918 IF_FEATURE_FIND_MMIN( "-mmin\0" )
919 IF_FEATURE_FIND_NEWER( "-newer\0" )
920 IF_FEATURE_FIND_INUM( "-inum\0" )
921 IF_FEATURE_FIND_USER( "-user\0" )
922 IF_FEATURE_FIND_GROUP( "-group\0" )
923 IF_FEATURE_FIND_SIZE( "-size\0" )
924 IF_FEATURE_FIND_CONTEXT("-context\0")
925 IF_FEATURE_FIND_LINKS( "-links\0" )
926 IF_FEATURE_FIND_MAXDEPTH("-mindepth\0""-maxdepth\0")
927 ;
928
929#if !USE_NESTED_FUNCTION
930 struct pp_locals ppl;
931#define appp (ppl.appp )
932#define cur_group (ppl.cur_group )
933#define cur_action (ppl.cur_action )
934#define invert_flag (ppl.invert_flag)
935#define ALLOC_ACTION(name) (action_##name*)alloc_action(&ppl, sizeof(action_##name), (action_fp) func_##name)
936#else
937 action*** appp;
938 unsigned cur_group;
939 unsigned cur_action;
940 IF_FEATURE_FIND_NOT( bool invert_flag; )
941
942 /* This is the only place in busybox where we use nested function.
943 * So far more standard alternatives were bigger. */
944 /* Auto decl suppresses "func without a prototype" warning: */
945 auto action* alloc_action(int sizeof_struct, action_fp f);
946 action* alloc_action(int sizeof_struct, action_fp f)
947 {
948 action *ap;
949 appp[cur_group] = xrealloc(appp[cur_group], (cur_action+2) * sizeof(appp[0][0]));
950 appp[cur_group][cur_action++] = ap = xzalloc(sizeof_struct);
951 appp[cur_group][cur_action] = NULL;
952 ap->f = f;
953 IF_FEATURE_FIND_NOT( ap->invert = invert_flag; )
954 IF_FEATURE_FIND_NOT( invert_flag = 0; )
955 return ap;
956 }
957#define ALLOC_ACTION(name) (action_##name*)alloc_action(sizeof(action_##name), (action_fp) func_##name)
958#endif
959
960 cur_group = 0;
961 cur_action = 0;
962 IF_FEATURE_FIND_NOT( invert_flag = 0; )
963 appp = xzalloc(2 * sizeof(appp[0])); /* appp[0],[1] == NULL */
964
965 while (*argv) {
966 const char *arg = argv[0];
967 int parm = index_in_strings(params, arg);
968 const char *arg1 = argv[1];
969
970 dbg("arg:'%s' arg1:'%s' parm:%d PARM_type:%d", arg, arg1, parm, PARM_type);
971
972 if (parm >= PARM_name) {
973 /* All options/actions starting from -name require argument */
974 if (!arg1)
975 bb_error_msg_and_die(bb_msg_requires_arg, arg);
976 argv++;
977 }
978
979 /* We can use big switch() here, but on i386
980 * it doesn't give smaller code. Other arches? */
981
982/* Options always return true. They always take effect
983 * rather than being processed only when their place in the
984 * expression is reached.
985 */
986 /* Options */
987 if (parm == OPT_FOLLOW) {
988 dbg("follow enabled: %d", __LINE__);
989 G.recurse_flags |= ACTION_FOLLOWLINKS | ACTION_DANGLING_OK;
990 }
991#if ENABLE_FEATURE_FIND_XDEV
992 else if (parm == OPT_XDEV) {
993 dbg("%d", __LINE__);
994 G.xdev_on = 1;
995 }
996#endif
997#if ENABLE_FEATURE_FIND_MAXDEPTH
998 else if (parm == OPT_MINDEPTH || parm == OPT_MINDEPTH + 1) {
999 dbg("%d", __LINE__);
1000 G.minmaxdepth[parm - OPT_MINDEPTH] = xatoi_positive(arg1);
1001 }
1002#endif
1003#if ENABLE_FEATURE_FIND_DEPTH
1004 else if (parm == OPT_DEPTH) {
1005 dbg("%d", __LINE__);
1006 G.recurse_flags |= ACTION_DEPTHFIRST;
1007 }
1008#endif
1009/* Actions are grouped by operators
1010 * ( expr ) Force precedence
1011 * ! expr True if expr is false
1012 * -not expr Same as ! expr
1013 * expr1 [-a[nd]] expr2 And; expr2 is not evaluated if expr1 is false
1014 * expr1 -o[r] expr2 Or; expr2 is not evaluated if expr1 is true
1015 * expr1 , expr2 List; both expr1 and expr2 are always evaluated
1016 * We implement: (), -a, -o
1017 */
1018 /* Operators */
1019 else if (parm == PARM_a IF_DESKTOP(|| parm == PARM_and)) {
1020 dbg("%d", __LINE__);
1021 /* no further special handling required */
1022 }
1023 else if (parm == PARM_o IF_DESKTOP(|| parm == PARM_or)) {
1024 dbg("%d", __LINE__);
1025 /* start new OR group */
1026 cur_group++;
1027 appp = xrealloc(appp, (cur_group+2) * sizeof(appp[0]));
1028 /*appp[cur_group] = NULL; - already NULL */
1029 appp[cur_group+1] = NULL;
1030 cur_action = 0;
1031 }
1032#if ENABLE_FEATURE_FIND_NOT
1033 else if (parm == PARM_char_not IF_DESKTOP(|| parm == PARM_not)) {
1034 /* also handles "find ! ! -name 'foo*'" */
1035 invert_flag ^= 1;
1036 dbg("invert_flag:%d", invert_flag);
1037 }
1038#endif
1039 /* Actions */
1040 else if (parm == PARM_print) {
1041 dbg("%d", __LINE__);
1042 G.need_print = 0;
1043 (void) ALLOC_ACTION(print);
1044 }
1045#if ENABLE_FEATURE_FIND_PRINT0
1046 else if (parm == PARM_print0) {
1047 dbg("%d", __LINE__);
1048 G.need_print = 0;
1049 (void) ALLOC_ACTION(print0);
1050 }
1051#endif
1052#if ENABLE_FEATURE_FIND_PRUNE
1053 else if (parm == PARM_prune) {
1054 dbg("%d", __LINE__);
1055 (void) ALLOC_ACTION(prune);
1056 }
1057#endif
1058#if ENABLE_FEATURE_FIND_DELETE
1059 else if (parm == PARM_delete) {
1060 dbg("%d", __LINE__);
1061 G.need_print = 0;
1062 G.recurse_flags |= ACTION_DEPTHFIRST;
1063 (void) ALLOC_ACTION(delete);
1064 }
1065#endif
1066#if ENABLE_FEATURE_FIND_EXEC
1067 else if (parm == PARM_exec) {
1068 int i;
1069 action_exec *ap;
1070 dbg("%d", __LINE__);
1071 G.need_print = 0;
1072 ap = ALLOC_ACTION(exec);
1073 ap->exec_argv = ++argv; /* first arg after -exec */
1074 /*ap->exec_argc = 0; - ALLOC_ACTION did it */
1075 while (1) {
1076 if (!*argv) /* did not see ';' or '+' until end */
1077 bb_error_msg_and_die(bb_msg_requires_arg, "-exec");
1078 // find -exec echo Foo ">{}<" ";"
1079 // executes "echo Foo >FILENAME<",
1080 // find -exec echo Foo ">{}<" "+"
1081 // executes "echo Foo FILENAME1 FILENAME2 FILENAME3...".
1082 // TODO (so far we treat "+" just like ";")
1083 if ((argv[0][0] == ';' || argv[0][0] == '+')
1084 && argv[0][1] == '\0'
1085 ) {
1086 break;
1087 }
1088 argv++;
1089 ap->exec_argc++;
1090 }
1091 if (ap->exec_argc == 0)
1092 bb_error_msg_and_die(bb_msg_requires_arg, arg);
1093 ap->subst_count = xmalloc(ap->exec_argc * sizeof(int));
1094 i = ap->exec_argc;
1095 while (i--)
1096 ap->subst_count[i] = count_subst(ap->exec_argv[i]);
1097 }
1098#endif
1099#if ENABLE_FEATURE_FIND_PAREN
1100 else if (parm == PARM_char_brace) {
1101 action_paren *ap;
1102 char **endarg;
1103 unsigned nested = 1;
1104
1105 dbg("%d", __LINE__);
1106 endarg = argv;
1107 while (1) {
1108 if (!*++endarg)
1109 bb_error_msg_and_die("unpaired '('");
1110 if (LONE_CHAR(*endarg, '('))
1111 nested++;
1112 else if (LONE_CHAR(*endarg, ')') && !--nested) {
1113 *endarg = NULL;
1114 break;
1115 }
1116 }
1117 ap = ALLOC_ACTION(paren);
1118 ap->subexpr = parse_params(argv + 1);
1119 *endarg = (char*) ")"; /* restore NULLed parameter */
1120 argv = endarg;
1121 }
1122#endif
1123 else if (parm == PARM_name || parm == PARM_iname) {
1124 action_name *ap;
1125 dbg("%d", __LINE__);
1126 ap = ALLOC_ACTION(name);
1127 ap->pattern = arg1;
1128 ap->iname = (parm == PARM_iname);
1129 }
1130#if ENABLE_FEATURE_FIND_PATH
1131 else if (parm == PARM_path IF_DESKTOP(|| parm == PARM_wholename) || parm == PARM_ipath) {
1132 action_path *ap;
1133 dbg("%d", __LINE__);
1134 ap = ALLOC_ACTION(path);
1135 ap->pattern = arg1;
1136 ap->ipath = (parm == PARM_ipath);
1137 }
1138#endif
1139#if ENABLE_FEATURE_FIND_REGEX
1140 else if (parm == PARM_regex) {
1141 action_regex *ap;
1142 dbg("%d", __LINE__);
1143 ap = ALLOC_ACTION(regex);
1144 xregcomp(&ap->compiled_pattern, arg1, 0 /*cflags*/);
1145 }
1146#endif
1147#if ENABLE_FEATURE_FIND_TYPE
1148 else if (parm == PARM_type) {
1149 action_type *ap;
1150 ap = ALLOC_ACTION(type);
1151 ap->type_mask = find_type(arg1);
1152 dbg("created:type mask:%x", ap->type_mask);
1153 }
1154#endif
1155#if ENABLE_FEATURE_FIND_PERM
1156/* -perm BITS File's mode bits are exactly BITS (octal or symbolic).
1157 * Symbolic modes use mode 0 as a point of departure.
1158 * -perm -BITS All of the BITS are set in file's mode.
1159 * -perm +BITS At least one of the BITS is set in file's mode.
1160 */
1161 else if (parm == PARM_perm) {
1162 action_perm *ap;
1163 dbg("%d", __LINE__);
1164 ap = ALLOC_ACTION(perm);
1165 ap->perm_char = arg1[0];
1166 arg1 = plus_minus_num(arg1);
1167 /*ap->perm_mask = 0; - ALLOC_ACTION did it */
1168 if (!bb_parse_mode(arg1, &ap->perm_mask))
1169 bb_error_msg_and_die("invalid mode '%s'", arg1);
1170 }
1171#endif
1172#if ENABLE_FEATURE_FIND_MTIME
1173 else if (parm == PARM_mtime) {
1174 action_mtime *ap;
1175 dbg("%d", __LINE__);
1176 ap = ALLOC_ACTION(mtime);
1177 ap->mtime_char = arg1[0];
1178 ap->mtime_days = xatoul(plus_minus_num(arg1));
1179 }
1180#endif
1181#if ENABLE_FEATURE_FIND_MMIN
1182 else if (parm == PARM_mmin) {
1183 action_mmin *ap;
1184 dbg("%d", __LINE__);
1185 ap = ALLOC_ACTION(mmin);
1186 ap->mmin_char = arg1[0];
1187 ap->mmin_mins = xatoul(plus_minus_num(arg1));
1188 }
1189#endif
1190#if ENABLE_FEATURE_FIND_NEWER
1191 else if (parm == PARM_newer) {
1192 struct stat stat_newer;
1193 action_newer *ap;
1194 dbg("%d", __LINE__);
1195 ap = ALLOC_ACTION(newer);
1196 xstat(arg1, &stat_newer);
1197 ap->newer_mtime = stat_newer.st_mtime;
1198 }
1199#endif
1200#if ENABLE_FEATURE_FIND_INUM
1201 else if (parm == PARM_inum) {
1202 action_inum *ap;
1203 dbg("%d", __LINE__);
1204 ap = ALLOC_ACTION(inum);
1205 ap->inode_num = xatoul(arg1);
1206 }
1207#endif
1208#if ENABLE_FEATURE_FIND_USER
1209 else if (parm == PARM_user) {
1210 action_user *ap;
1211 dbg("%d", __LINE__);
1212 ap = ALLOC_ACTION(user);
1213 ap->uid = bb_strtou(arg1, NULL, 10);
1214 if (errno)
1215 ap->uid = xuname2uid(arg1);
1216 }
1217#endif
1218#if ENABLE_FEATURE_FIND_GROUP
1219 else if (parm == PARM_group) {
1220 action_group *ap;
1221 dbg("%d", __LINE__);
1222 ap = ALLOC_ACTION(group);
1223 ap->gid = bb_strtou(arg1, NULL, 10);
1224 if (errno)
1225 ap->gid = xgroup2gid(arg1);
1226 }
1227#endif
1228#if ENABLE_FEATURE_FIND_SIZE
1229 else if (parm == PARM_size) {
1230/* -size n[bckw]: file uses n units of space
1231 * b (default): units are 512-byte blocks
1232 * c: 1 byte
1233 * k: kilobytes
1234 * w: 2-byte words
1235 */
1236#if ENABLE_LFS
1237#define XATOU_SFX xatoull_sfx
1238#else
1239#define XATOU_SFX xatoul_sfx
1240#endif
1241 static const struct suffix_mult find_suffixes[] = {
1242 { "c", 1 },
1243 { "w", 2 },
1244 { "", 512 },
1245 { "b", 512 },
1246 { "k", 1024 },
1247 { "", 0 }
1248 };
1249 action_size *ap;
1250 dbg("%d", __LINE__);
1251 ap = ALLOC_ACTION(size);
1252 ap->size_char = arg1[0];
1253 ap->size = XATOU_SFX(plus_minus_num(arg1), find_suffixes);
1254 }
1255#endif
1256#if ENABLE_FEATURE_FIND_CONTEXT
1257 else if (parm == PARM_context) {
1258 action_context *ap;
1259 dbg("%d", __LINE__);
1260 ap = ALLOC_ACTION(context);
1261 /*ap->context = NULL; - ALLOC_ACTION did it */
1262 /* SELinux headers erroneously declare non-const parameter */
1263 if (selinux_raw_to_trans_context((char*)arg1, &ap->context))
1264 bb_simple_perror_msg(arg1);
1265 }
1266#endif
1267#if ENABLE_FEATURE_FIND_LINKS
1268 else if (parm == PARM_links) {
1269 action_links *ap;
1270 dbg("%d", __LINE__);
1271 ap = ALLOC_ACTION(links);
1272 ap->links_char = arg1[0];
1273 ap->links_count = xatoul(plus_minus_num(arg1));
1274 }
1275#endif
1276 else {
1277 bb_error_msg("unrecognized: %s", arg);
1278 bb_show_usage();
1279 }
1280 argv++;
1281 }
1282 dbg("exiting %s", __func__);
1283 return appp;
1284#undef ALLOC_ACTION
1285#undef appp
1286#undef cur_action
1287#undef invert_flag
1288}
1289
1290int find_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
1291int find_main(int argc UNUSED_PARAM, char **argv)
1292{
1293 int i, firstopt, status = EXIT_SUCCESS;
1294 char **past_HLP, *saved;
1295
1296 INIT_G();
1297
1298 /* "find -type f" + getopt("+HLP") => disaster.
1299 * Need to avoid getopt running into a non-HLP option.
1300 * Do this by temporarily storing NULL there:
1301 */
1302 past_HLP = argv;
1303 for (;;) {
1304 saved = *++past_HLP;
1305 if (!saved)
1306 break;
1307 if (saved[0] != '-')
1308 break;
1309 if (!saved[1])
1310 break; /* it is "-" */
1311 if ((saved+1)[strspn(saved+1, "HLP")] != '\0')
1312 break;
1313 }
1314 *past_HLP = NULL;
1315 /* "+": stop on first non-option */
1316 i = getopt32(argv, "+HLP");
1317 if (i & (1<<0))
1318 G.recurse_flags |= ACTION_FOLLOWLINKS_L0 | ACTION_DANGLING_OK;
1319 if (i & (1<<1))
1320 G.recurse_flags |= ACTION_FOLLOWLINKS | ACTION_DANGLING_OK;
1321 /* -P is default and is ignored */
1322 argv = past_HLP; /* same result as "argv += optind;" */
1323 *past_HLP = saved;
1324
1325 for (firstopt = 0; argv[firstopt]; firstopt++) {
1326 if (argv[firstopt][0] == '-')
1327 break;
1328 if (ENABLE_FEATURE_FIND_NOT && LONE_CHAR(argv[firstopt], '!'))
1329 break;
1330 if (ENABLE_FEATURE_FIND_PAREN && LONE_CHAR(argv[firstopt], '('))
1331 break;
1332 }
1333 if (firstopt == 0) {
1334 *--argv = (char*)".";
1335 firstopt++;
1336 }
1337
1338 G.actions = parse_params(&argv[firstopt]);
1339 argv[firstopt] = NULL;
1340
1341#if ENABLE_FEATURE_FIND_XDEV
1342 if (G.xdev_on) {
1343 struct stat stbuf;
1344
1345 G.xdev_count = firstopt;
1346 G.xdev_dev = xzalloc(G.xdev_count * sizeof(G.xdev_dev[0]));
1347 for (i = 0; argv[i]; i++) {
1348 /* not xstat(): shouldn't bomb out on
1349 * "find not_exist exist -xdev" */
1350 if (stat(argv[i], &stbuf) == 0)
1351 G.xdev_dev[i] = stbuf.st_dev;
1352 /* else G.xdev_dev[i] stays 0 and
1353 * won't match any real device dev_t
1354 */
1355 }
1356 }
1357#endif
1358
1359 for (i = 0; argv[i]; i++) {
1360 if (!recursive_action(argv[i],
1361 G.recurse_flags,/* flags */
1362 fileAction, /* file action */
1363 fileAction, /* dir action */
1364 NULL, /* user data */
1365 0) /* depth */
1366 ) {
1367 status = EXIT_FAILURE;
1368 }
1369 }
1370
1371 return status;
1372}
1373
generated by cgit at 2024-05-15 23:43:41 (GMT)