source: MondoRescue/branches/3.3/mindi-busybox/findutils/find.c@ 3621

Last change on this file since 3621 was 3621, checked in by Bruno Cornec, 7 years ago

New 3?3 banch for incorporation of latest busybox 1.25. Changing minor version to handle potential incompatibilities.
File size: 41.5 KB
Line 
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_EXEC_PLUS
141//config: bool "Enable -exec ... {} +"
142//config: default y
143//config: depends on FEATURE_FIND_EXEC
144//config: help
145//config: Support the 'find -exec ... {} +' option for executing commands
146//config: for all matched files at once.
147//config: Without this option, -exec + is a synonym for -exec ;
148//config: (IOW: it works correctly, but without expected speedup)
149//config:
150//config:config FEATURE_FIND_USER
151//config: bool "Enable -user: username/uid matching"
152//config: default y
153//config: depends on FIND
154//config: help
155//config: Support the 'find -user' option for searching by username or uid.
156//config:
157//config:config FEATURE_FIND_GROUP
158//config: bool "Enable -group: group/gid matching"
159//config: default y
160//config: depends on FIND
161//config: help
162//config: Support the 'find -group' option for searching by group name or gid.
163//config:
164//config:config FEATURE_FIND_NOT
165//config: bool "Enable the 'not' (!) operator"
166//config: default y
167//config: depends on FIND
168//config: help
169//config: Support the '!' operator to invert the test results.
170//config: If 'Enable full-blown desktop' is enabled, then will also support
171//config: the non-POSIX notation '-not'.
172//config:
173//config:config FEATURE_FIND_DEPTH
174//config: bool "Enable -depth"
175//config: default y
176//config: depends on FIND
177//config: help
178//config: Process each directory's contents before the directory itself.
179//config:
180//config:config FEATURE_FIND_PAREN
181//config: bool "Enable parens in options"
182//config: default y
183//config: depends on FIND
184//config: help
185//config: Enable usage of parens '(' to specify logical order of arguments.
186//config:
187//config:config FEATURE_FIND_SIZE
188//config: bool "Enable -size: file size matching"
189//config: default y
190//config: depends on FIND
191//config: help
192//config: Support the 'find -size' option for searching by file size.
193//config:
194//config:config FEATURE_FIND_PRUNE
195//config: bool "Enable -prune: exclude subdirectories"
196//config: default y
197//config: depends on FIND
198//config: help
199//config: If the file is a directory, dont descend into it. Useful for
200//config: exclusion .svn and CVS directories.
201//config:
202//config:config FEATURE_FIND_DELETE
203//config: bool "Enable -delete: delete files/dirs"
204//config: default y
205//config: depends on FIND && FEATURE_FIND_DEPTH
206//config: help
207//config: Support the 'find -delete' option for deleting files and directories.
208//config: WARNING: This option can do much harm if used wrong. Busybox will not
209//config: try to protect the user from doing stupid things. Use with care.
210//config:
211//config:config FEATURE_FIND_PATH
212//config: bool "Enable -path: match pathname with shell pattern"
213//config: default y
214//config: depends on FIND
215//config: help
216//config: The -path option matches whole pathname instead of just filename.
217//config:
218//config:config FEATURE_FIND_REGEX
219//config: bool "Enable -regex: match pathname with regex"
220//config: default y
221//config: depends on FIND
222//config: help
223//config: The -regex option matches whole pathname against regular expression.
224//config:
225//config:config FEATURE_FIND_CONTEXT
226//config: bool "Enable -context: security context matching"
227//config: default n
228//config: depends on FIND && SELINUX
229//config: help
230//config: Support the 'find -context' option for matching security context.
231//config:
232//config:config FEATURE_FIND_LINKS
233//config: bool "Enable -links: link count matching"
234//config: default y
235//config: depends on FIND
236//config: help
237//config: Support the 'find -links' option for matching number of links.
238
239//applet:IF_FIND(APPLET_NOEXEC(find, find, BB_DIR_USR_BIN, BB_SUID_DROP, find))
240
241//kbuild:lib-$(CONFIG_FIND) += find.o
242
243//usage:#define find_trivial_usage
244//usage: "[-HL] [PATH]... [OPTIONS] [ACTIONS]"
245//usage:#define find_full_usage "\n\n"
246//usage: "Search for files and perform actions on them.\n"
247//usage: "First failed action stops processing of current file.\n"
248//usage: "Defaults: PATH is current directory, action is '-print'\n"
249//usage: "\n -L,-follow Follow symlinks"
250//usage: "\n -H ...on command line only"
251//usage: IF_FEATURE_FIND_XDEV(
252//usage: "\n -xdev Don't descend directories on other filesystems"
253//usage: )
254//usage: IF_FEATURE_FIND_MAXDEPTH(
255//usage: "\n -maxdepth N Descend at most N levels. -maxdepth 0 applies"
256//usage: "\n actions to command line arguments only"
257//usage: "\n -mindepth N Don't act on first N levels"
258//usage: )
259//usage: IF_FEATURE_FIND_DEPTH(
260//usage: "\n -depth Act on directory *after* traversing it"
261//usage: )
262//usage: "\n"
263//usage: "\nActions:"
264//usage: IF_FEATURE_FIND_PAREN(
265//usage: "\n ( ACTIONS ) Group actions for -o / -a"
266//usage: )
267//usage: IF_FEATURE_FIND_NOT(
268//usage: "\n ! ACT Invert ACT's success/failure"
269//usage: )
270//usage: "\n ACT1 [-a] ACT2 If ACT1 fails, stop, else do ACT2"
271//usage: "\n ACT1 -o ACT2 If ACT1 succeeds, stop, else do ACT2"
272//usage: "\n Note: -a has higher priority than -o"
273//usage: "\n -name PATTERN Match file name (w/o directory name) to PATTERN"
274//usage: "\n -iname PATTERN Case insensitive -name"
275//usage: IF_FEATURE_FIND_PATH(
276//usage: "\n -path PATTERN Match path to PATTERN"
277//usage: "\n -ipath PATTERN Case insensitive -path"
278//usage: )
279//usage: IF_FEATURE_FIND_REGEX(
280//usage: "\n -regex PATTERN Match path to regex PATTERN"
281//usage: )
282//usage: IF_FEATURE_FIND_TYPE(
283//usage: "\n -type X File type is X (one of: f,d,l,b,c,...)"
284//usage: )
285//usage: IF_FEATURE_FIND_PERM(
286//usage: "\n -perm MASK At least one mask bit (+MASK), all bits (-MASK),"
287//usage: "\n or exactly MASK bits are set in file's mode"
288//usage: )
289//usage: IF_FEATURE_FIND_MTIME(
290//usage: "\n -mtime DAYS mtime is greater than (+N), less than (-N),"
291//usage: "\n or exactly N days in the past"
292//usage: )
293//usage: IF_FEATURE_FIND_MMIN(
294//usage: "\n -mmin MINS mtime is greater than (+N), less than (-N),"
295//usage: "\n or exactly N minutes in the past"
296//usage: )
297//usage: IF_FEATURE_FIND_NEWER(
298//usage: "\n -newer FILE mtime is more recent than FILE's"
299//usage: )
300//usage: IF_FEATURE_FIND_INUM(
301//usage: "\n -inum N File has inode number N"
302//usage: )
303//usage: IF_FEATURE_FIND_USER(
304//usage: "\n -user NAME/ID File is owned by given user"
305//usage: )
306//usage: IF_FEATURE_FIND_GROUP(
307//usage: "\n -group NAME/ID File is owned by given group"
308//usage: )
309//usage: IF_FEATURE_FIND_SIZE(
310//usage: "\n -size N[bck] File size is N (c:bytes,k:kbytes,b:512 bytes(def.))"
311//usage: "\n +/-N: file size is bigger/smaller than N"
312//usage: )
313//usage: IF_FEATURE_FIND_LINKS(
314//usage: "\n -links N Number of links is greater than (+N), less than (-N),"
315//usage: "\n or exactly N"
316//usage: )
317//usage: IF_FEATURE_FIND_CONTEXT(
318//usage: "\n -context CTX File has specified security context"
319//usage: )
320//usage: IF_FEATURE_FIND_PRUNE(
321//usage: "\n -prune If current file is directory, don't descend into it"
322//usage: )
323//usage: "\nIf none of the following actions is specified, -print is assumed"
324//usage: "\n -print Print file name"
325//usage: IF_FEATURE_FIND_PRINT0(
326//usage: "\n -print0 Print file name, NUL terminated"
327//usage: )
328//usage: IF_FEATURE_FIND_EXEC(
329//usage: "\n -exec CMD ARG ; Run CMD with all instances of {} replaced by"
330//usage: "\n file name. Fails if CMD exits with nonzero"
331//usage: )
332//usage: IF_FEATURE_FIND_EXEC_PLUS(
333//usage: "\n -exec CMD ARG + Run CMD with {} replaced by list of file names"
334//usage: )
335//usage: IF_FEATURE_FIND_DELETE(
336//usage: "\n -delete Delete current file/directory. Turns on -depth option"
337//usage: )
338//usage:
339//usage:#define find_example_usage
340//usage: "$ find / -name passwd\n"
341//usage: "/etc/passwd\n"
342
343#include <fnmatch.h>
344#include "libbb.h"
345#include "common_bufsiz.h"
346#if ENABLE_FEATURE_FIND_REGEX
347# include "xregex.h"
348#endif
349/* GNUism: */
350#ifndef FNM_CASEFOLD
351# define FNM_CASEFOLD 0
352#endif
353
354#if 1
355# define dbg(...) ((void)0)
356#else
357# define dbg(...) bb_error_msg(__VA_ARGS__)
358#endif
359
360
361/* This is a NOEXEC applet. Be very careful! */
362
363
364typedef int (*action_fp)(const char *fileName, const struct stat *statbuf, void *) FAST_FUNC;
365
366typedef struct {
367 action_fp f;
368#if ENABLE_FEATURE_FIND_NOT
369 bool invert;
370#endif
371} action;
372
373#define ACTS(name, ...) typedef struct { action a; __VA_ARGS__ } action_##name;
374#define ACTF(name) \
375 static int FAST_FUNC func_##name(const char *fileName UNUSED_PARAM, \
376 const struct stat *statbuf UNUSED_PARAM, \
377 action_##name* ap UNUSED_PARAM)
378
379 ACTS(print)
380 ACTS(name, const char *pattern; bool iname;)
381IF_FEATURE_FIND_PATH( ACTS(path, const char *pattern; bool ipath;))
382IF_FEATURE_FIND_REGEX( ACTS(regex, regex_t compiled_pattern;))
383IF_FEATURE_FIND_PRINT0( ACTS(print0))
384IF_FEATURE_FIND_TYPE( ACTS(type, int type_mask;))
385IF_FEATURE_FIND_PERM( ACTS(perm, char perm_char; mode_t perm_mask;))
386IF_FEATURE_FIND_MTIME( ACTS(mtime, char mtime_char; unsigned mtime_days;))
387IF_FEATURE_FIND_MMIN( ACTS(mmin, char mmin_char; unsigned mmin_mins;))
388IF_FEATURE_FIND_NEWER( ACTS(newer, time_t newer_mtime;))
389IF_FEATURE_FIND_INUM( ACTS(inum, ino_t inode_num;))
390IF_FEATURE_FIND_USER( ACTS(user, uid_t uid;))
391IF_FEATURE_FIND_SIZE( ACTS(size, char size_char; off_t size;))
392IF_FEATURE_FIND_CONTEXT(ACTS(context, security_context_t context;))
393IF_FEATURE_FIND_PAREN( ACTS(paren, action ***subexpr;))
394IF_FEATURE_FIND_PRUNE( ACTS(prune))
395IF_FEATURE_FIND_DELETE( ACTS(delete))
396IF_FEATURE_FIND_EXEC( ACTS(exec,
397 char **exec_argv; /* -exec ARGS */
398 unsigned *subst_count;
399 int exec_argc; /* count of ARGS */
400 IF_FEATURE_FIND_EXEC_PLUS(
401 /*
402 * filelist is NULL if "exec ;"
403 * non-NULL if "exec +"
404 */
405 char **filelist;
406 int filelist_idx;
407 int file_len;
408 )
409 ))
410IF_FEATURE_FIND_GROUP( ACTS(group, gid_t gid;))
411IF_FEATURE_FIND_LINKS( ACTS(links, char links_char; int links_count;))
412
413struct globals {
414 IF_FEATURE_FIND_XDEV(dev_t *xdev_dev;)
415 IF_FEATURE_FIND_XDEV(int xdev_count;)
416#if ENABLE_FEATURE_FIND_MAXDEPTH
417 int minmaxdepth[2];
418#endif
419 action ***actions;
420 smallint need_print;
421 smallint xdev_on;
422 recurse_flags_t recurse_flags;
423 IF_FEATURE_FIND_EXEC_PLUS(unsigned max_argv_len;)
424} FIX_ALIASING;
425#define G (*(struct globals*)bb_common_bufsiz1)
426#define INIT_G() do { \
427 setup_common_bufsiz(); \
428 BUILD_BUG_ON(sizeof(G) > COMMON_BUFSIZE); \
429 /* we have to zero it out because of NOEXEC */ \
430 memset(&G, 0, sizeof(G)); \
431 IF_FEATURE_FIND_MAXDEPTH(G.minmaxdepth[1] = INT_MAX;) \
432 IF_FEATURE_FIND_EXEC_PLUS(G.max_argv_len = bb_arg_max() - 2048;) \
433 G.need_print = 1; \
434 G.recurse_flags = ACTION_RECURSE; \
435} while (0)
436
437/* Return values of ACTFs ('action functions') are a bit mask:
438 * bit 1=1: prune (use SKIP constant for setting it)
439 * bit 0=1: matched successfully (TRUE)
440 */
441
442static int exec_actions(action ***appp, const char *fileName, const struct stat *statbuf)
443{
444 int cur_group;
445 int cur_action;
446 int rc = 0;
447 action **app, *ap;
448
449 /* "action group" is a set of actions ANDed together.
450 * groups are ORed together.
451 * We simply evaluate each group until we find one in which all actions
452 * succeed. */
453
454 /* -prune is special: if it is encountered, then we won't
455 * descend into current directory. It doesn't matter whether
456 * action group (in which -prune sits) will succeed or not:
457 * find * -prune -name 'f*' -o -name 'm*' -- prunes every dir
458 * find * -name 'f*' -o -prune -name 'm*' -- prunes all dirs
459 * not starting with 'f' */
460
461 /* We invert TRUE bit (bit 0). Now 1 there means 'failure'.
462 * and bitwise OR in "rc |= TRUE ^ ap->f()" will:
463 * (1) make SKIP (-prune) bit stick; and (2) detect 'failure'.
464 * On return, bit is restored. */
465
466 cur_group = -1;
467 while ((app = appp[++cur_group]) != NULL) {
468 rc &= ~TRUE; /* 'success' so far, clear TRUE bit */
469 cur_action = -1;
470 while (1) {
471 ap = app[++cur_action];
472 if (!ap) /* all actions in group were successful */
473 return rc ^ TRUE; /* restore TRUE bit */
474 rc |= TRUE ^ ap->f(fileName, statbuf, ap);
475#if ENABLE_FEATURE_FIND_NOT
476 if (ap->invert) rc ^= TRUE;
477#endif
478 dbg("grp %d action %d rc:0x%x", cur_group, cur_action, rc);
479 if (rc & TRUE) /* current group failed, try next */
480 break;
481 }
482 }
483 dbg("returning:0x%x", rc ^ TRUE);
484 return rc ^ TRUE; /* restore TRUE bit */
485}
486
487#if !FNM_CASEFOLD
488static char *strcpy_upcase(char *dst, const char *src)
489{
490 char *d = dst;
491 while (1) {
492 unsigned char ch = *src++;
493 if (ch >= 'a' && ch <= 'z')
494 ch -= ('a' - 'A');
495 *d++ = ch;
496 if (ch == '\0')
497 break;
498 }
499 return dst;
500}
501#endif
502
503ACTF(name)
504{
505 const char *tmp = bb_basename(fileName);
506 if (tmp != fileName && *tmp == '\0') {
507 /* "foo/bar/". Oh no... go back to 'b' */
508 tmp--;
509 while (tmp != fileName && *--tmp != '/')
510 continue;
511 if (*tmp == '/')
512 tmp++;
513 }
514 /* Was using FNM_PERIOD flag too,
515 * but somewhere between 4.1.20 and 4.4.0 GNU find stopped using it.
516 * find -name '*foo' should match .foo too:
517 */
518#if FNM_CASEFOLD
519 return fnmatch(ap->pattern, tmp, (ap->iname ? FNM_CASEFOLD : 0)) == 0;
520#else
521 if (ap->iname)
522 tmp = strcpy_upcase(alloca(strlen(tmp) + 1), tmp);
523 return fnmatch(ap->pattern, tmp, 0) == 0;
524#endif
525}
526
527#if ENABLE_FEATURE_FIND_PATH
528ACTF(path)
529{
530# if FNM_CASEFOLD
531 return fnmatch(ap->pattern, fileName, (ap->ipath ? FNM_CASEFOLD : 0)) == 0;
532# else
533 if (ap->ipath)
534 fileName = strcpy_upcase(alloca(strlen(fileName) + 1), fileName);
535 return fnmatch(ap->pattern, fileName, 0) == 0;
536# endif
537}
538#endif
539#if ENABLE_FEATURE_FIND_REGEX
540ACTF(regex)
541{
542 regmatch_t match;
543 if (regexec(&ap->compiled_pattern, fileName, 1, &match, 0 /*eflags*/))
544 return 0; /* no match */
545 if (match.rm_so)
546 return 0; /* match doesn't start at pos 0 */
547 if (fileName[match.rm_eo])
548 return 0; /* match doesn't end exactly at end of pathname */
549 return 1;
550}
551#endif
552#if ENABLE_FEATURE_FIND_TYPE
553ACTF(type)
554{
555 return ((statbuf->st_mode & S_IFMT) == ap->type_mask);
556}
557#endif
558#if ENABLE_FEATURE_FIND_PERM
559ACTF(perm)
560{
561 /* -perm [+/]mode: at least one of perm_mask bits are set */
562 if (ap->perm_char == '+' || ap->perm_char == '/')
563 return (statbuf->st_mode & ap->perm_mask) != 0;
564 /* -perm -mode: all of perm_mask are set */
565 if (ap->perm_char == '-')
566 return (statbuf->st_mode & ap->perm_mask) == ap->perm_mask;
567 /* -perm mode: file mode must match perm_mask */
568 return (statbuf->st_mode & 07777) == ap->perm_mask;
569}
570#endif
571#if ENABLE_FEATURE_FIND_MTIME
572ACTF(mtime)
573{
574 time_t file_age = time(NULL) - statbuf->st_mtime;
575 time_t mtime_secs = ap->mtime_days * 24*60*60;
576 if (ap->mtime_char == '+')
577 return file_age >= mtime_secs + 24*60*60;
578 if (ap->mtime_char == '-')
579 return file_age < mtime_secs;
580 /* just numeric mtime */
581 return file_age >= mtime_secs && file_age < (mtime_secs + 24*60*60);
582}
583#endif
584#if ENABLE_FEATURE_FIND_MMIN
585ACTF(mmin)
586{
587 time_t file_age = time(NULL) - statbuf->st_mtime;
588 time_t mmin_secs = ap->mmin_mins * 60;
589 if (ap->mmin_char == '+')
590 return file_age >= mmin_secs + 60;
591 if (ap->mmin_char == '-')
592 return file_age < mmin_secs;
593 /* just numeric mmin */
594 return file_age >= mmin_secs && file_age < (mmin_secs + 60);
595}
596#endif
597#if ENABLE_FEATURE_FIND_NEWER
598ACTF(newer)
599{
600 return (ap->newer_mtime < statbuf->st_mtime);
601}
602#endif
603#if ENABLE_FEATURE_FIND_INUM
604ACTF(inum)
605{
606 return (statbuf->st_ino == ap->inode_num);
607}
608#endif
609#if ENABLE_FEATURE_FIND_EXEC
610static int do_exec(action_exec *ap, const char *fileName)
611{
612 int i, rc;
613# if ENABLE_FEATURE_FIND_EXEC_PLUS
614 int size = ap->exec_argc + ap->filelist_idx + 1;
615# else
616 int size = ap->exec_argc + 1;
617# endif
618# if ENABLE_USE_PORTABLE_CODE
619 char **argv = alloca(sizeof(char*) * size);
620# else /* gcc 4.3.1 generates smaller code: */
621 char *argv[size];
622# endif
623 char **pp = argv;
624
625 for (i = 0; i < ap->exec_argc; i++) {
626 const char *arg = ap->exec_argv[i];
627
628# if ENABLE_FEATURE_FIND_EXEC_PLUS
629 if (ap->filelist) {
630 /* Handling "-exec +"
631 * Only one exec_argv[i] has substitution in it.
632 * Expand that one exec_argv[i] into file list.
633 */
634 if (ap->subst_count[i] == 0) {
635 *pp++ = xstrdup(arg);
636 } else {
637 int j = 0;
638 while (ap->filelist[j]) {
639 /* 2nd arg here should be ap->subst_count[i], but it is always 1: */
640 *pp++ = xmalloc_substitute_string(arg, 1, "{}", ap->filelist[j]);
641 free(ap->filelist[j]);
642 j++;
643 }
644 }
645 } else
646# endif
647 {
648 /* Handling "-exec ;" */
649 *pp++ = xmalloc_substitute_string(arg, ap->subst_count[i], "{}", fileName);
650 }
651 }
652 *pp = NULL; /* terminate the list */
653
654# if ENABLE_FEATURE_FIND_EXEC_PLUS
655 if (ap->filelist) {
656 ap->filelist[0] = NULL;
657 ap->filelist_idx = 0;
658 ap->file_len = 0;
659 }
660# endif
661
662 rc = spawn_and_wait(argv);
663 if (rc < 0)
664 bb_simple_perror_msg(argv[0]);
665
666 i = 0;
667 while (argv[i])
668 free(argv[i++]);
669 return rc == 0; /* return 1 if exitcode 0 */
670}
671ACTF(exec)
672{
673# if ENABLE_FEATURE_FIND_EXEC_PLUS
674 if (ap->filelist) {
675 int rc;
676
677 ap->filelist = xrealloc_vector(ap->filelist, 8, ap->filelist_idx);
678 ap->filelist[ap->filelist_idx++] = xstrdup(fileName);
679 ap->file_len += strlen(fileName) + sizeof(char*) + 1;
680 /* If we have lots of files already, exec the command */
681 rc = 1;
682 if (ap->file_len >= G.max_argv_len)
683 rc = do_exec(ap, NULL);
684 return rc;
685 }
686# endif
687 return do_exec(ap, fileName);
688}
689# if ENABLE_FEATURE_FIND_EXEC_PLUS
690static int flush_exec_plus(void)
691{
692 action *ap;
693 action **app;
694 action ***appp = G.actions;
695 while ((app = *appp++) != NULL) {
696 while ((ap = *app++) != NULL) {
697 if (ap->f == (action_fp)func_exec) {
698 action_exec *ae = (void*)ap;
699 if (ae->filelist_idx != 0) {
700 int rc = do_exec(ae, NULL);
701# if ENABLE_FEATURE_FIND_NOT
702 if (ap->invert) rc = !rc;
703# endif
704 if (rc == 0)
705 return 1;
706 }
707 }
708 }
709 }
710 return 0;
711}
712# endif
713#endif
714#if ENABLE_FEATURE_FIND_USER
715ACTF(user)
716{
717 return (statbuf->st_uid == ap->uid);
718}
719#endif
720#if ENABLE_FEATURE_FIND_GROUP
721ACTF(group)
722{
723 return (statbuf->st_gid == ap->gid);
724}
725#endif
726#if ENABLE_FEATURE_FIND_PRINT0
727ACTF(print0)
728{
729 printf("%s%c", fileName, '\0');
730 return TRUE;
731}
732#endif
733ACTF(print)
734{
735 puts(fileName);
736 return TRUE;
737}
738#if ENABLE_FEATURE_FIND_PAREN
739ACTF(paren)
740{
741 return exec_actions(ap->subexpr, fileName, statbuf);
742}
743#endif
744#if ENABLE_FEATURE_FIND_SIZE
745ACTF(size)
746{
747 if (ap->size_char == '+')
748 return statbuf->st_size > ap->size;
749 if (ap->size_char == '-')
750 return statbuf->st_size < ap->size;
751 return statbuf->st_size == ap->size;
752}
753#endif
754#if ENABLE_FEATURE_FIND_PRUNE
755/*
756 * -prune: if -depth is not given, return true and do not descend
757 * current dir; if -depth is given, return false with no effect.
758 * Example:
759 * find dir -name 'asm-*' -prune -o -name '*.[chS]' -print
760 */
761ACTF(prune)
762{
763 return SKIP + TRUE;
764}
765#endif
766#if ENABLE_FEATURE_FIND_DELETE
767ACTF(delete)
768{
769 int rc;
770 if (S_ISDIR(statbuf->st_mode)) {
771 /* "find . -delete" skips rmdir(".") */
772 rc = 0;
773 if (NOT_LONE_CHAR(fileName, '.'))
774 rc = rmdir(fileName);
775 } else {
776 rc = unlink(fileName);
777 }
778 if (rc < 0)
779 bb_simple_perror_msg(fileName);
780 return TRUE;
781}
782#endif
783#if ENABLE_FEATURE_FIND_CONTEXT
784ACTF(context)
785{
786 security_context_t con;
787 int rc;
788
789 if (G.recurse_flags & ACTION_FOLLOWLINKS) {
790 rc = getfilecon(fileName, &con);
791 } else {
792 rc = lgetfilecon(fileName, &con);
793 }
794 if (rc < 0)
795 return FALSE;
796 rc = strcmp(ap->context, con);
797 freecon(con);
798 return rc == 0;
799}
800#endif
801#if ENABLE_FEATURE_FIND_LINKS
802ACTF(links)
803{
804 switch(ap->links_char) {
805 case '-' : return (statbuf->st_nlink < ap->links_count);
806 case '+' : return (statbuf->st_nlink > ap->links_count);
807 default: return (statbuf->st_nlink == ap->links_count);
808 }
809}
810#endif
811
812static int FAST_FUNC fileAction(const char *fileName,
813 struct stat *statbuf,
814 void *userData UNUSED_PARAM,
815 int depth IF_NOT_FEATURE_FIND_MAXDEPTH(UNUSED_PARAM))
816{
817 int r;
818 int same_fs = 1;
819
820#if ENABLE_FEATURE_FIND_XDEV
821 if (S_ISDIR(statbuf->st_mode) && G.xdev_count) {
822 int i;
823 for (i = 0; i < G.xdev_count; i++) {
824 if (G.xdev_dev[i] == statbuf->st_dev)
825 goto found;
826 }
827 //bb_error_msg("'%s': not same fs", fileName);
828 same_fs = 0;
829 found: ;
830 }
831#endif
832
833#if ENABLE_FEATURE_FIND_MAXDEPTH
834 if (depth < G.minmaxdepth[0]) {
835 if (same_fs)
836 return TRUE; /* skip this, continue recursing */
837 return SKIP; /* stop recursing */
838 }
839 if (depth > G.minmaxdepth[1])
840 return SKIP; /* stop recursing */
841#endif
842
843 r = exec_actions(G.actions, fileName, statbuf);
844 /* Had no explicit -print[0] or -exec? then print */
845 if ((r & TRUE) && G.need_print)
846 puts(fileName);
847
848#if ENABLE_FEATURE_FIND_MAXDEPTH
849 if (S_ISDIR(statbuf->st_mode)) {
850 if (depth == G.minmaxdepth[1])
851 return SKIP;
852 }
853#endif
854 /* -xdev stops on mountpoints, but AFTER mountpoit itself
855 * is processed as usual */
856 if (!same_fs) {
857 return SKIP;
858 }
859
860 /* Cannot return 0: our caller, recursive_action(),
861 * will perror() and skip dirs (if called on dir) */
862 return (r & SKIP) ? SKIP : TRUE;
863}
864
865
866#if ENABLE_FEATURE_FIND_TYPE
867static int find_type(const char *type)
868{
869 int mask = 0;
870
871 if (*type == 'b')
872 mask = S_IFBLK;
873 else if (*type == 'c')
874 mask = S_IFCHR;
875 else if (*type == 'd')
876 mask = S_IFDIR;
877 else if (*type == 'p')
878 mask = S_IFIFO;
879 else if (*type == 'f')
880 mask = S_IFREG;
881 else if (*type == 'l')
882 mask = S_IFLNK;
883 else if (*type == 's')
884 mask = S_IFSOCK;
885
886 if (mask == 0 || type[1] != '\0')
887 bb_error_msg_and_die(bb_msg_invalid_arg_to, type, "-type");
888
889 return mask;
890}
891#endif
892
893#if ENABLE_FEATURE_FIND_PERM \
894 || ENABLE_FEATURE_FIND_MTIME || ENABLE_FEATURE_FIND_MMIN \
895 || ENABLE_FEATURE_FIND_SIZE || ENABLE_FEATURE_FIND_LINKS
896static const char* plus_minus_num(const char* str)
897{
898 if (*str == '-' || *str == '+')
899 str++;
900 return str;
901}
902#endif
903
904/* Say no to GCCism */
905#define USE_NESTED_FUNCTION 0
906
907#if !USE_NESTED_FUNCTION
908struct pp_locals {
909 action*** appp;
910 unsigned cur_group;
911 unsigned cur_action;
912 IF_FEATURE_FIND_NOT( bool invert_flag; )
913};
914static action* alloc_action(struct pp_locals *ppl, int sizeof_struct, action_fp f)
915{
916 action *ap = xzalloc(sizeof_struct);
917 action **app;
918 action ***group = &ppl->appp[ppl->cur_group];
919 *group = app = xrealloc(*group, (ppl->cur_action+2) * sizeof(ppl->appp[0][0]));
920 app[ppl->cur_action++] = ap;
921 app[ppl->cur_action] = NULL;
922 ap->f = f;
923 IF_FEATURE_FIND_NOT( ap->invert = ppl->invert_flag; )
924 IF_FEATURE_FIND_NOT( ppl->invert_flag = 0; )
925 return ap;
926}
927#endif
928
929static action*** parse_params(char **argv)
930{
931 enum {
932 OPT_FOLLOW ,
933 IF_FEATURE_FIND_XDEV( OPT_XDEV ,)
934 IF_FEATURE_FIND_DEPTH( OPT_DEPTH ,)
935 PARM_a ,
936 PARM_o ,
937 IF_FEATURE_FIND_NOT( PARM_char_not ,)
938#if ENABLE_DESKTOP
939 PARM_and ,
940 PARM_or ,
941 IF_FEATURE_FIND_NOT( PARM_not ,)
942#endif
943 PARM_print ,
944 IF_FEATURE_FIND_PRINT0( PARM_print0 ,)
945 IF_FEATURE_FIND_PRUNE( PARM_prune ,)
946 IF_FEATURE_FIND_DELETE( PARM_delete ,)
947 IF_FEATURE_FIND_EXEC( PARM_exec ,)
948 IF_FEATURE_FIND_PAREN( PARM_char_brace,)
949 /* All options/actions starting from here require argument */
950 PARM_name ,
951 PARM_iname ,
952 IF_FEATURE_FIND_PATH( PARM_path ,)
953#if ENABLE_DESKTOP
954 /* -wholename is a synonym for -path */
955 /* We support it because Linux kernel's "make tags" uses it */
956 IF_FEATURE_FIND_PATH( PARM_wholename ,)
957#endif
958 IF_FEATURE_FIND_PATH( PARM_ipath ,)
959 IF_FEATURE_FIND_REGEX( PARM_regex ,)
960 IF_FEATURE_FIND_TYPE( PARM_type ,)
961 IF_FEATURE_FIND_PERM( PARM_perm ,)
962 IF_FEATURE_FIND_MTIME( PARM_mtime ,)
963 IF_FEATURE_FIND_MMIN( PARM_mmin ,)
964 IF_FEATURE_FIND_NEWER( PARM_newer ,)
965 IF_FEATURE_FIND_INUM( PARM_inum ,)
966 IF_FEATURE_FIND_USER( PARM_user ,)
967 IF_FEATURE_FIND_GROUP( PARM_group ,)
968 IF_FEATURE_FIND_SIZE( PARM_size ,)
969 IF_FEATURE_FIND_CONTEXT(PARM_context ,)
970 IF_FEATURE_FIND_LINKS( PARM_links ,)
971 IF_FEATURE_FIND_MAXDEPTH(OPT_MINDEPTH,OPT_MAXDEPTH,)
972 };
973
974 static const char params[] ALIGN1 =
975 "-follow\0"
976 IF_FEATURE_FIND_XDEV( "-xdev\0" )
977 IF_FEATURE_FIND_DEPTH( "-depth\0" )
978 "-a\0"
979 "-o\0"
980 IF_FEATURE_FIND_NOT( "!\0" )
981#if ENABLE_DESKTOP
982 "-and\0"
983 "-or\0"
984 IF_FEATURE_FIND_NOT( "-not\0" )
985#endif
986 "-print\0"
987 IF_FEATURE_FIND_PRINT0( "-print0\0" )
988 IF_FEATURE_FIND_PRUNE( "-prune\0" )
989 IF_FEATURE_FIND_DELETE( "-delete\0" )
990 IF_FEATURE_FIND_EXEC( "-exec\0" )
991 IF_FEATURE_FIND_PAREN( "(\0" )
992 /* All options/actions starting from here require argument */
993 "-name\0"
994 "-iname\0"
995 IF_FEATURE_FIND_PATH( "-path\0" )
996#if ENABLE_DESKTOP
997 IF_FEATURE_FIND_PATH( "-wholename\0")
998#endif
999 IF_FEATURE_FIND_PATH( "-ipath\0" )
1000 IF_FEATURE_FIND_REGEX( "-regex\0" )
1001 IF_FEATURE_FIND_TYPE( "-type\0" )
1002 IF_FEATURE_FIND_PERM( "-perm\0" )
1003 IF_FEATURE_FIND_MTIME( "-mtime\0" )
1004 IF_FEATURE_FIND_MMIN( "-mmin\0" )
1005 IF_FEATURE_FIND_NEWER( "-newer\0" )
1006 IF_FEATURE_FIND_INUM( "-inum\0" )
1007 IF_FEATURE_FIND_USER( "-user\0" )
1008 IF_FEATURE_FIND_GROUP( "-group\0" )
1009 IF_FEATURE_FIND_SIZE( "-size\0" )
1010 IF_FEATURE_FIND_CONTEXT("-context\0")
1011 IF_FEATURE_FIND_LINKS( "-links\0" )
1012 IF_FEATURE_FIND_MAXDEPTH("-mindepth\0""-maxdepth\0")
1013 ;
1014
1015#if !USE_NESTED_FUNCTION
1016 struct pp_locals ppl;
1017#define appp (ppl.appp )
1018#define cur_group (ppl.cur_group )
1019#define cur_action (ppl.cur_action )
1020#define invert_flag (ppl.invert_flag)
1021#define ALLOC_ACTION(name) (action_##name*)alloc_action(&ppl, sizeof(action_##name), (action_fp) func_##name)
1022#else
1023 action*** appp;
1024 unsigned cur_group;
1025 unsigned cur_action;
1026 IF_FEATURE_FIND_NOT( bool invert_flag; )
1027
1028 /* This is the only place in busybox where we use nested function.
1029 * So far more standard alternatives were bigger. */
1030 /* Auto decl suppresses "func without a prototype" warning: */
1031 auto action* alloc_action(int sizeof_struct, action_fp f);
1032 action* alloc_action(int sizeof_struct, action_fp f)
1033 {
1034 action *ap;
1035 appp[cur_group] = xrealloc(appp[cur_group], (cur_action+2) * sizeof(appp[0][0]));
1036 appp[cur_group][cur_action++] = ap = xzalloc(sizeof_struct);
1037 appp[cur_group][cur_action] = NULL;
1038 ap->f = f;
1039 IF_FEATURE_FIND_NOT( ap->invert = invert_flag; )
1040 IF_FEATURE_FIND_NOT( invert_flag = 0; )
1041 return ap;
1042 }
1043#define ALLOC_ACTION(name) (action_##name*)alloc_action(sizeof(action_##name), (action_fp) func_##name)
1044#endif
1045
1046 cur_group = 0;
1047 cur_action = 0;
1048 IF_FEATURE_FIND_NOT( invert_flag = 0; )
1049 appp = xzalloc(2 * sizeof(appp[0])); /* appp[0],[1] == NULL */
1050
1051 while (*argv) {
1052 const char *arg = argv[0];
1053 int parm = index_in_strings(params, arg);
1054 const char *arg1 = argv[1];
1055
1056 dbg("arg:'%s' arg1:'%s' parm:%d PARM_type:%d", arg, arg1, parm, PARM_type);
1057
1058 if (parm >= PARM_name) {
1059 /* All options/actions starting from -name require argument */
1060 if (!arg1)
1061 bb_error_msg_and_die(bb_msg_requires_arg, arg);
1062 argv++;
1063 }
1064
1065 /* We can use big switch() here, but on i386
1066 * it doesn't give smaller code. Other arches? */
1067
1068/* Options always return true. They always take effect
1069 * rather than being processed only when their place in the
1070 * expression is reached.
1071 */
1072 /* Options */
1073 if (parm == OPT_FOLLOW) {
1074 dbg("follow enabled: %d", __LINE__);
1075 G.recurse_flags |= ACTION_FOLLOWLINKS | ACTION_DANGLING_OK;
1076 }
1077#if ENABLE_FEATURE_FIND_XDEV
1078 else if (parm == OPT_XDEV) {
1079 dbg("%d", __LINE__);
1080 G.xdev_on = 1;
1081 }
1082#endif
1083#if ENABLE_FEATURE_FIND_MAXDEPTH
1084 else if (parm == OPT_MINDEPTH || parm == OPT_MINDEPTH + 1) {
1085 dbg("%d", __LINE__);
1086 G.minmaxdepth[parm - OPT_MINDEPTH] = xatoi_positive(arg1);
1087 }
1088#endif
1089#if ENABLE_FEATURE_FIND_DEPTH
1090 else if (parm == OPT_DEPTH) {
1091 dbg("%d", __LINE__);
1092 G.recurse_flags |= ACTION_DEPTHFIRST;
1093 }
1094#endif
1095/* Actions are grouped by operators
1096 * ( expr ) Force precedence
1097 * ! expr True if expr is false
1098 * -not expr Same as ! expr
1099 * expr1 [-a[nd]] expr2 And; expr2 is not evaluated if expr1 is false
1100 * expr1 -o[r] expr2 Or; expr2 is not evaluated if expr1 is true
1101 * expr1 , expr2 List; both expr1 and expr2 are always evaluated
1102 * We implement: (), -a, -o
1103 */
1104 /* Operators */
1105 else if (parm == PARM_a IF_DESKTOP(|| parm == PARM_and)) {
1106 dbg("%d", __LINE__);
1107 /* no further special handling required */
1108 }
1109 else if (parm == PARM_o IF_DESKTOP(|| parm == PARM_or)) {
1110 dbg("%d", __LINE__);
1111 /* start new OR group */
1112 cur_group++;
1113 appp = xrealloc(appp, (cur_group+2) * sizeof(appp[0]));
1114 /*appp[cur_group] = NULL; - already NULL */
1115 appp[cur_group+1] = NULL;
1116 cur_action = 0;
1117 }
1118#if ENABLE_FEATURE_FIND_NOT
1119 else if (parm == PARM_char_not IF_DESKTOP(|| parm == PARM_not)) {
1120 /* also handles "find ! ! -name 'foo*'" */
1121 invert_flag ^= 1;
1122 dbg("invert_flag:%d", invert_flag);
1123 }
1124#endif
1125 /* Actions */
1126 else if (parm == PARM_print) {
1127 dbg("%d", __LINE__);
1128 G.need_print = 0;
1129 (void) ALLOC_ACTION(print);
1130 }
1131#if ENABLE_FEATURE_FIND_PRINT0
1132 else if (parm == PARM_print0) {
1133 dbg("%d", __LINE__);
1134 G.need_print = 0;
1135 (void) ALLOC_ACTION(print0);
1136 }
1137#endif
1138#if ENABLE_FEATURE_FIND_PRUNE
1139 else if (parm == PARM_prune) {
1140 dbg("%d", __LINE__);
1141 (void) ALLOC_ACTION(prune);
1142 }
1143#endif
1144#if ENABLE_FEATURE_FIND_DELETE
1145 else if (parm == PARM_delete) {
1146 dbg("%d", __LINE__);
1147 G.need_print = 0;
1148 G.recurse_flags |= ACTION_DEPTHFIRST;
1149 (void) ALLOC_ACTION(delete);
1150 }
1151#endif
1152#if ENABLE_FEATURE_FIND_EXEC
1153 else if (parm == PARM_exec) {
1154 int i;
1155 action_exec *ap;
1156 IF_FEATURE_FIND_EXEC_PLUS(int all_subst = 0;)
1157 dbg("%d", __LINE__);
1158 G.need_print = 0;
1159 ap = ALLOC_ACTION(exec);
1160 ap->exec_argv = ++argv; /* first arg after -exec */
1161 /*ap->exec_argc = 0; - ALLOC_ACTION did it */
1162 while (1) {
1163 if (!*argv) /* did not see ';' or '+' until end */
1164 bb_error_msg_and_die(bb_msg_requires_arg, "-exec");
1165 // find -exec echo Foo ">{}<" ";"
1166 // executes "echo Foo >FILENAME<",
1167 // find -exec echo Foo ">{}<" "+"
1168 // executes "echo Foo FILENAME1 FILENAME2 FILENAME3...".
1169 if ((argv[0][0] == ';' || argv[0][0] == '+')
1170 && argv[0][1] == '\0'
1171 ) {
1172# if ENABLE_FEATURE_FIND_EXEC_PLUS
1173 if (argv[0][0] == '+')
1174 ap->filelist = xzalloc(sizeof(ap->filelist[0]));
1175# endif
1176 break;
1177 }
1178 argv++;
1179 ap->exec_argc++;
1180 }
1181 if (ap->exec_argc == 0)
1182 bb_error_msg_and_die(bb_msg_requires_arg, arg);
1183 ap->subst_count = xmalloc(ap->exec_argc * sizeof(int));
1184 i = ap->exec_argc;
1185 while (i--) {
1186 ap->subst_count[i] = count_strstr(ap->exec_argv[i], "{}");
1187 IF_FEATURE_FIND_EXEC_PLUS(all_subst += ap->subst_count[i];)
1188 }
1189# if ENABLE_FEATURE_FIND_EXEC_PLUS
1190 /*
1191 * coreutils expects {} to appear only once in "-exec +"
1192 */
1193 if (all_subst != 1 && ap->filelist)
1194 bb_error_msg_and_die("only one '{}' allowed for -exec +");
1195# endif
1196 }
1197#endif
1198#if ENABLE_FEATURE_FIND_PAREN
1199 else if (parm == PARM_char_brace) {
1200 action_paren *ap;
1201 char **endarg;
1202 unsigned nested = 1;
1203
1204 dbg("%d", __LINE__);
1205 endarg = argv;
1206 while (1) {
1207 if (!*++endarg)
1208 bb_error_msg_and_die("unpaired '('");
1209 if (LONE_CHAR(*endarg, '('))
1210 nested++;
1211 else if (LONE_CHAR(*endarg, ')') && !--nested) {
1212 *endarg = NULL;
1213 break;
1214 }
1215 }
1216 ap = ALLOC_ACTION(paren);
1217 ap->subexpr = parse_params(argv + 1);
1218 *endarg = (char*) ")"; /* restore NULLed parameter */
1219 argv = endarg;
1220 }
1221#endif
1222 else if (parm == PARM_name || parm == PARM_iname) {
1223 action_name *ap;
1224 dbg("%d", __LINE__);
1225 ap = ALLOC_ACTION(name);
1226 ap->pattern = arg1;
1227 ap->iname = (parm == PARM_iname);
1228 }
1229#if ENABLE_FEATURE_FIND_PATH
1230 else if (parm == PARM_path IF_DESKTOP(|| parm == PARM_wholename) || parm == PARM_ipath) {
1231 action_path *ap;
1232 dbg("%d", __LINE__);
1233 ap = ALLOC_ACTION(path);
1234 ap->pattern = arg1;
1235 ap->ipath = (parm == PARM_ipath);
1236 }
1237#endif
1238#if ENABLE_FEATURE_FIND_REGEX
1239 else if (parm == PARM_regex) {
1240 action_regex *ap;
1241 dbg("%d", __LINE__);
1242 ap = ALLOC_ACTION(regex);
1243 xregcomp(&ap->compiled_pattern, arg1, 0 /*cflags*/);
1244 }
1245#endif
1246#if ENABLE_FEATURE_FIND_TYPE
1247 else if (parm == PARM_type) {
1248 action_type *ap;
1249 ap = ALLOC_ACTION(type);
1250 ap->type_mask = find_type(arg1);
1251 dbg("created:type mask:%x", ap->type_mask);
1252 }
1253#endif
1254#if ENABLE_FEATURE_FIND_PERM
1255/* -perm BITS File's mode bits are exactly BITS (octal or symbolic).
1256 * Symbolic modes use mode 0 as a point of departure.
1257 * -perm -BITS All of the BITS are set in file's mode.
1258 * -perm [+/]BITS At least one of the BITS is set in file's mode.
1259 */
1260 else if (parm == PARM_perm) {
1261 action_perm *ap;
1262 dbg("%d", __LINE__);
1263 ap = ALLOC_ACTION(perm);
1264 ap->perm_char = arg1[0];
1265 arg1 = (arg1[0] == '/' ? arg1+1 : plus_minus_num(arg1));
1266 /*ap->perm_mask = 0; - ALLOC_ACTION did it */
1267 ap->perm_mask = bb_parse_mode(arg1, ap->perm_mask);
1268 if (ap->perm_mask == (mode_t)-1)
1269 bb_error_msg_and_die("invalid mode '%s'", arg1);
1270 }
1271#endif
1272#if ENABLE_FEATURE_FIND_MTIME
1273 else if (parm == PARM_mtime) {
1274 action_mtime *ap;
1275 dbg("%d", __LINE__);
1276 ap = ALLOC_ACTION(mtime);
1277 ap->mtime_char = arg1[0];
1278 ap->mtime_days = xatoul(plus_minus_num(arg1));
1279 }
1280#endif
1281#if ENABLE_FEATURE_FIND_MMIN
1282 else if (parm == PARM_mmin) {
1283 action_mmin *ap;
1284 dbg("%d", __LINE__);
1285 ap = ALLOC_ACTION(mmin);
1286 ap->mmin_char = arg1[0];
1287 ap->mmin_mins = xatoul(plus_minus_num(arg1));
1288 }
1289#endif
1290#if ENABLE_FEATURE_FIND_NEWER
1291 else if (parm == PARM_newer) {
1292 struct stat stat_newer;
1293 action_newer *ap;
1294 dbg("%d", __LINE__);
1295 ap = ALLOC_ACTION(newer);
1296 xstat(arg1, &stat_newer);
1297 ap->newer_mtime = stat_newer.st_mtime;
1298 }
1299#endif
1300#if ENABLE_FEATURE_FIND_INUM
1301 else if (parm == PARM_inum) {
1302 action_inum *ap;
1303 dbg("%d", __LINE__);
1304 ap = ALLOC_ACTION(inum);
1305 ap->inode_num = xatoul(arg1);
1306 }
1307#endif
1308#if ENABLE_FEATURE_FIND_USER
1309 else if (parm == PARM_user) {
1310 action_user *ap;
1311 dbg("%d", __LINE__);
1312 ap = ALLOC_ACTION(user);
1313 ap->uid = bb_strtou(arg1, NULL, 10);
1314 if (errno)
1315 ap->uid = xuname2uid(arg1);
1316 }
1317#endif
1318#if ENABLE_FEATURE_FIND_GROUP
1319 else if (parm == PARM_group) {
1320 action_group *ap;
1321 dbg("%d", __LINE__);
1322 ap = ALLOC_ACTION(group);
1323 ap->gid = bb_strtou(arg1, NULL, 10);
1324 if (errno)
1325 ap->gid = xgroup2gid(arg1);
1326 }
1327#endif
1328#if ENABLE_FEATURE_FIND_SIZE
1329 else if (parm == PARM_size) {
1330/* -size n[bckw]: file uses n units of space
1331 * b (default): units are 512-byte blocks
1332 * c: 1 byte
1333 * k: kilobytes
1334 * w: 2-byte words
1335 */
1336#if ENABLE_LFS
1337#define XATOU_SFX xatoull_sfx
1338#else
1339#define XATOU_SFX xatoul_sfx
1340#endif
1341 static const struct suffix_mult find_suffixes[] = {
1342 { "c", 1 },
1343 { "w", 2 },
1344 { "", 512 },
1345 { "b", 512 },
1346 { "k", 1024 },
1347 { "", 0 }
1348 };
1349 action_size *ap;
1350 dbg("%d", __LINE__);
1351 ap = ALLOC_ACTION(size);
1352 ap->size_char = arg1[0];
1353 ap->size = XATOU_SFX(plus_minus_num(arg1), find_suffixes);
1354 }
1355#endif
1356#if ENABLE_FEATURE_FIND_CONTEXT
1357 else if (parm == PARM_context) {
1358 action_context *ap;
1359 dbg("%d", __LINE__);
1360 ap = ALLOC_ACTION(context);
1361 /*ap->context = NULL; - ALLOC_ACTION did it */
1362 /* SELinux headers erroneously declare non-const parameter */
1363 if (selinux_raw_to_trans_context((char*)arg1, &ap->context))
1364 bb_simple_perror_msg(arg1);
1365 }
1366#endif
1367#if ENABLE_FEATURE_FIND_LINKS
1368 else if (parm == PARM_links) {
1369 action_links *ap;
1370 dbg("%d", __LINE__);
1371 ap = ALLOC_ACTION(links);
1372 ap->links_char = arg1[0];
1373 ap->links_count = xatoul(plus_minus_num(arg1));
1374 }
1375#endif
1376 else {
1377 bb_error_msg("unrecognized: %s", arg);
1378 bb_show_usage();
1379 }
1380 argv++;
1381 }
1382 dbg("exiting %s", __func__);
1383 return appp;
1384#undef ALLOC_ACTION
1385#undef appp
1386#undef cur_action
1387#undef invert_flag
1388}
1389
1390int find_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
1391int find_main(int argc UNUSED_PARAM, char **argv)
1392{
1393 int i, firstopt, status = EXIT_SUCCESS;
1394 char **past_HLP, *saved;
1395
1396 INIT_G();
1397
1398 /* "find -type f" + getopt("+HLP") => disaster.
1399 * Need to avoid getopt running into a non-HLP option.
1400 * Do this by temporarily storing NULL there:
1401 */
1402 past_HLP = argv;
1403 for (;;) {
1404 saved = *++past_HLP;
1405 if (!saved)
1406 break;
1407 if (saved[0] != '-')
1408 break;
1409 if (!saved[1])
1410 break; /* it is "-" */
1411 if ((saved+1)[strspn(saved+1, "HLP")] != '\0')
1412 break;
1413 }
1414 *past_HLP = NULL;
1415 /* "+": stop on first non-option */
1416 i = getopt32(argv, "+HLP");
1417 if (i & (1<<0))
1418 G.recurse_flags |= ACTION_FOLLOWLINKS_L0 | ACTION_DANGLING_OK;
1419 if (i & (1<<1))
1420 G.recurse_flags |= ACTION_FOLLOWLINKS | ACTION_DANGLING_OK;
1421 /* -P is default and is ignored */
1422 argv = past_HLP; /* same result as "argv += optind;" */
1423 *past_HLP = saved;
1424
1425 for (firstopt = 0; argv[firstopt]; firstopt++) {
1426 if (argv[firstopt][0] == '-')
1427 break;
1428 if (ENABLE_FEATURE_FIND_NOT && LONE_CHAR(argv[firstopt], '!'))
1429 break;
1430 if (ENABLE_FEATURE_FIND_PAREN && LONE_CHAR(argv[firstopt], '('))
1431 break;
1432 }
1433 if (firstopt == 0) {
1434 *--argv = (char*)".";
1435 firstopt++;
1436 }
1437
1438 G.actions = parse_params(&argv[firstopt]);
1439 argv[firstopt] = NULL;
1440
1441#if ENABLE_FEATURE_FIND_XDEV
1442 if (G.xdev_on) {
1443 struct stat stbuf;
1444
1445 G.xdev_count = firstopt;
1446 G.xdev_dev = xzalloc(G.xdev_count * sizeof(G.xdev_dev[0]));
1447 for (i = 0; argv[i]; i++) {
1448 /* not xstat(): shouldn't bomb out on
1449 * "find not_exist exist -xdev" */
1450 if (stat(argv[i], &stbuf) == 0)
1451 G.xdev_dev[i] = stbuf.st_dev;
1452 /* else G.xdev_dev[i] stays 0 and
1453 * won't match any real device dev_t
1454 */
1455 }
1456 }
1457#endif
1458
1459 for (i = 0; argv[i]; i++) {
1460 if (!recursive_action(argv[i],
1461 G.recurse_flags,/* flags */
1462 fileAction, /* file action */
1463 fileAction, /* dir action */
1464 NULL, /* user data */
1465 0) /* depth */
1466 ) {
1467 status |= EXIT_FAILURE;
1468 }
1469 }
1470
1471 IF_FEATURE_FIND_EXEC_PLUS(status |= flush_exec_plus();)
1472 return status;
1473}
Note: See TracBrowser for help on using the repository browser.