summaryrefslogtreecommitdiff
path: root/findutils/find.c (plain)
blob: 4f976d5528498a73f4ea5d7450ab261024936130
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; filesize_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; unsigned 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 int r;
506 const char *tmp = bb_basename(fileName);
507 /* GNU findutils: find DIR/ -name DIR
508 * prints "DIR/" (DIR// prints "DIR//" etc).
509 * Need to strip trailing "/".
510 * Such names can come only from top-level names, but
511 * we can't do this before recursive_action() call,
512 * since then "find FILE/ -name FILE"
513 * would also work (on non-directories), which is wrong.
514 */
515 char *trunc_slash = NULL;
516
517 if (*tmp == '\0') {
518 /* "foo/bar/[//...]" */
519 while (tmp != fileName && tmp[-1] == '/')
520 tmp--;
521 if (tmp == fileName) { /* entire fileName is "//.."? */
522 /* yes, convert "//..." to "/"
523 * Testcases:
524 * find / -maxdepth 1 -name /: prints /
525 * find // -maxdepth 1 -name /: prints //
526 * find / -maxdepth 1 -name //: prints nothing
527 * find // -maxdepth 1 -name //: prints nothing
528 */
529 if (tmp[1])
530 trunc_slash = (char*)tmp + 1;
531 } else {
532 /* no, it's "foo/bar/[//...]", go back to 'b' */
533 trunc_slash = (char*)tmp;
534 while (tmp != fileName && tmp[-1] != '/')
535 tmp--;
536 }
537 }
538
539 /* Was using FNM_PERIOD flag too,
540 * but somewhere between 4.1.20 and 4.4.0 GNU find stopped using it.
541 * find -name '*foo' should match .foo too:
542 */
543 if (trunc_slash) *trunc_slash = '\0';
544#if FNM_CASEFOLD
545 r = fnmatch(ap->pattern, tmp, (ap->iname ? FNM_CASEFOLD : 0));
546#else
547 if (ap->iname)
548 tmp = strcpy_upcase(alloca(strlen(tmp) + 1), tmp);
549 r = fnmatch(ap->pattern, tmp, 0);
550#endif
551 if (trunc_slash) *trunc_slash = '/';
552 return r == 0;
553}
554
555#if ENABLE_FEATURE_FIND_PATH
556ACTF(path)
557{
558# if FNM_CASEFOLD
559 return fnmatch(ap->pattern, fileName, (ap->ipath ? FNM_CASEFOLD : 0)) == 0;
560# else
561 if (ap->ipath)
562 fileName = strcpy_upcase(alloca(strlen(fileName) + 1), fileName);
563 return fnmatch(ap->pattern, fileName, 0) == 0;
564# endif
565}
566#endif
567#if ENABLE_FEATURE_FIND_REGEX
568ACTF(regex)
569{
570 regmatch_t match;
571 if (regexec(&ap->compiled_pattern, fileName, 1, &match, 0 /*eflags*/))
572 return 0; /* no match */
573 if (match.rm_so)
574 return 0; /* match doesn't start at pos 0 */
575 if (fileName[match.rm_eo])
576 return 0; /* match doesn't end exactly at end of pathname */
577 return 1;
578}
579#endif
580#if ENABLE_FEATURE_FIND_TYPE
581ACTF(type)
582{
583 return ((statbuf->st_mode & S_IFMT) == (unsigned) ap->type_mask);
584}
585#endif
586#if ENABLE_FEATURE_FIND_PERM
587ACTF(perm)
588{
589 /* -perm [+/]mode: at least one of perm_mask bits are set */
590 if (ap->perm_char == '+' || ap->perm_char == '/')
591 return (statbuf->st_mode & ap->perm_mask) != 0;
592 /* -perm -mode: all of perm_mask are set */
593 if (ap->perm_char == '-')
594 return (statbuf->st_mode & ap->perm_mask) == ap->perm_mask;
595 /* -perm mode: file mode must match perm_mask */
596 return (statbuf->st_mode & 07777) == ap->perm_mask;
597}
598#endif
599#if ENABLE_FEATURE_FIND_MTIME
600ACTF(mtime)
601{
602 time_t file_age = time(NULL) - statbuf->st_mtime;
603 time_t mtime_secs = ap->mtime_days * 24*60*60;
604 if (ap->mtime_char == '+')
605 return file_age >= mtime_secs + 24*60*60;
606 if (ap->mtime_char == '-')
607 return file_age < mtime_secs;
608 /* just numeric mtime */
609 return file_age >= mtime_secs && file_age < (mtime_secs + 24*60*60);
610}
611#endif
612#if ENABLE_FEATURE_FIND_MMIN
613ACTF(mmin)
614{
615 time_t file_age = time(NULL) - statbuf->st_mtime;
616 time_t mmin_secs = ap->mmin_mins * 60;
617 if (ap->mmin_char == '+')
618 return file_age >= mmin_secs + 60;
619 if (ap->mmin_char == '-')
620 return file_age < mmin_secs;
621 /* just numeric mmin */
622 return file_age >= mmin_secs && file_age < (mmin_secs + 60);
623}
624#endif
625#if ENABLE_FEATURE_FIND_NEWER
626ACTF(newer)
627{
628 return ((time_t) ap->newer_mtime < (time_t) statbuf->st_mtime);
629}
630#endif
631#if ENABLE_FEATURE_FIND_INUM
632ACTF(inum)
633{
634 return (statbuf->st_ino == ap->inode_num);
635}
636#endif
637#if ENABLE_FEATURE_FIND_EXEC
638static int do_exec(action_exec *ap, const char *fileName)
639{
640 int i, rc;
641# if ENABLE_FEATURE_FIND_EXEC_PLUS
642 int size = ap->exec_argc + ap->filelist_idx + 1;
643# else
644 int size = ap->exec_argc + 1;
645# endif
646# if ENABLE_USE_PORTABLE_CODE
647 char **argv = alloca(sizeof(char*) * size);
648# else /* gcc 4.3.1 generates smaller code: */
649 char *argv[size];
650# endif
651 char **pp = argv;
652
653 for (i = 0; i < ap->exec_argc; i++) {
654 const char *arg = ap->exec_argv[i];
655
656# if ENABLE_FEATURE_FIND_EXEC_PLUS
657 if (ap->filelist) {
658 /* Handling "-exec +"
659 * Only one exec_argv[i] has substitution in it.
660 * Expand that one exec_argv[i] into file list.
661 */
662 if (ap->subst_count[i] == 0) {
663 *pp++ = xstrdup(arg);
664 } else {
665 int j = 0;
666 while (ap->filelist[j]) {
667 /* 2nd arg here should be ap->subst_count[i], but it is always 1: */
668 *pp++ = xmalloc_substitute_string(arg, 1, "{}", ap->filelist[j]);
669 free(ap->filelist[j]);
670 j++;
671 }
672 }
673 } else
674# endif
675 {
676 /* Handling "-exec ;" */
677 *pp++ = xmalloc_substitute_string(arg, ap->subst_count[i], "{}", fileName);
678 }
679 }
680 *pp = NULL; /* terminate the list */
681
682# if ENABLE_FEATURE_FIND_EXEC_PLUS
683 if (ap->filelist) {
684 ap->filelist[0] = NULL;
685 ap->filelist_idx = 0;
686 ap->file_len = 0;
687 }
688# endif
689
690 rc = spawn_and_wait(argv);
691 if (rc < 0)
692 bb_simple_perror_msg(argv[0]);
693
694 i = 0;
695 while (argv[i])
696 free(argv[i++]);
697 return rc == 0; /* return 1 if exitcode 0 */
698}
699ACTF(exec)
700{
701# if ENABLE_FEATURE_FIND_EXEC_PLUS
702 if (ap->filelist) {
703 int rc;
704
705 ap->filelist = xrealloc_vector(ap->filelist, 8, ap->filelist_idx);
706 ap->filelist[ap->filelist_idx++] = xstrdup(fileName);
707 ap->file_len += strlen(fileName) + sizeof(char*) + 1;
708 /* If we have lots of files already, exec the command */
709 rc = 1;
710 if (ap->file_len >= G.max_argv_len)
711 rc = do_exec(ap, NULL);
712 return rc;
713 }
714# endif
715 return do_exec(ap, fileName);
716}
717# if ENABLE_FEATURE_FIND_EXEC_PLUS
718static int flush_exec_plus(void)
719{
720 action *ap;
721 action **app;
722 action ***appp = G.actions;
723 while ((app = *appp++) != NULL) {
724 while ((ap = *app++) != NULL) {
725 if (ap->f == (action_fp)func_exec) {
726 action_exec *ae = (void*)ap;
727 if (ae->filelist_idx != 0) {
728 int rc = do_exec(ae, NULL);
729# if ENABLE_FEATURE_FIND_NOT
730 if (ap->invert) rc = !rc;
731# endif
732 if (rc == 0)
733 return 1;
734 }
735 }
736 }
737 }
738 return 0;
739}
740# endif
741#endif
742#if ENABLE_FEATURE_FIND_USER
743ACTF(user)
744{
745 return (statbuf->st_uid == ap->uid);
746}
747#endif
748#if ENABLE_FEATURE_FIND_GROUP
749ACTF(group)
750{
751 return (statbuf->st_gid == ap->gid);
752}
753#endif
754#if ENABLE_FEATURE_FIND_PRINT0
755ACTF(print0)
756{
757 printf("%s%c", fileName, '\0');
758 return TRUE;
759}
760#endif
761ACTF(print)
762{
763 puts(fileName);
764 return TRUE;
765}
766#if ENABLE_FEATURE_FIND_PAREN
767ACTF(paren)
768{
769 return exec_actions(ap->subexpr, fileName, statbuf);
770}
771#endif
772#if ENABLE_FEATURE_FIND_SIZE
773ACTF(size)
774{
775 if (ap->size_char == '+')
776 return statbuf->st_size > ap->size;
777 if (ap->size_char == '-')
778 return statbuf->st_size < ap->size;
779 return statbuf->st_size == ap->size;
780}
781#endif
782#if ENABLE_FEATURE_FIND_PRUNE
783/*
784 * -prune: if -depth is not given, return true and do not descend
785 * current dir; if -depth is given, return false with no effect.
786 * Example:
787 * find dir -name 'asm-*' -prune -o -name '*.[chS]' -print
788 */
789ACTF(prune)
790{
791 return SKIP + TRUE;
792}
793#endif
794#if ENABLE_FEATURE_FIND_DELETE
795ACTF(delete)
796{
797 int rc;
798 if (S_ISDIR(statbuf->st_mode)) {
799 /* "find . -delete" skips rmdir(".") */
800 rc = 0;
801 if (NOT_LONE_CHAR(fileName, '.'))
802 rc = rmdir(fileName);
803 } else {
804 rc = unlink(fileName);
805 }
806 if (rc < 0)
807 bb_simple_perror_msg(fileName);
808 return TRUE;
809}
810#endif
811#if ENABLE_FEATURE_FIND_CONTEXT
812ACTF(context)
813{
814 security_context_t con;
815 int rc;
816
817 if (G.recurse_flags & ACTION_FOLLOWLINKS) {
818 rc = getfilecon(fileName, &con);
819 } else {
820 rc = lgetfilecon(fileName, &con);
821 }
822 if (rc < 0)
823 return FALSE;
824 rc = strcmp(ap->context, con);
825 freecon(con);
826 return rc == 0;
827}
828#endif
829#if ENABLE_FEATURE_FIND_LINKS
830ACTF(links)
831{
832 switch(ap->links_char) {
833 case '-' : return (statbuf->st_nlink < ap->links_count);
834 case '+' : return (statbuf->st_nlink > ap->links_count);
835 default: return (statbuf->st_nlink == ap->links_count);
836 }
837}
838#endif
839
840static int FAST_FUNC fileAction(const char *fileName,
841 struct stat *statbuf,
842 void *userData UNUSED_PARAM,
843 int depth IF_NOT_FEATURE_FIND_MAXDEPTH(UNUSED_PARAM))
844{
845 int r;
846 int same_fs = 1;
847
848#if ENABLE_FEATURE_FIND_XDEV
849 if (S_ISDIR(statbuf->st_mode) && G.xdev_count) {
850 int i;
851 for (i = 0; i < G.xdev_count; i++) {
852 if (G.xdev_dev[i] == statbuf->st_dev)
853 goto found;
854 }
855 //bb_error_msg("'%s': not same fs", fileName);
856 same_fs = 0;
857 found: ;
858 }
859#endif
860
861#if ENABLE_FEATURE_FIND_MAXDEPTH
862 if (depth < G.minmaxdepth[0]) {
863 if (same_fs)
864 return TRUE; /* skip this, continue recursing */
865 return SKIP; /* stop recursing */
866 }
867 if (depth > G.minmaxdepth[1])
868 return SKIP; /* stop recursing */
869#endif
870
871 r = exec_actions(G.actions, fileName, statbuf);
872 /* Had no explicit -print[0] or -exec? then print */
873 if ((r & TRUE) && G.need_print)
874 puts(fileName);
875
876#if ENABLE_FEATURE_FIND_MAXDEPTH
877 if (S_ISDIR(statbuf->st_mode)) {
878 if (depth == G.minmaxdepth[1])
879 return SKIP;
880 }
881#endif
882 /* -xdev stops on mountpoints, but AFTER mountpoit itself
883 * is processed as usual */
884 if (!same_fs) {
885 return SKIP;
886 }
887
888 /* Cannot return 0: our caller, recursive_action(),
889 * will perror() and skip dirs (if called on dir) */
890 return (r & SKIP) ? SKIP : TRUE;
891}
892
893
894#if ENABLE_FEATURE_FIND_TYPE
895static int find_type(const char *type)
896{
897 int mask = 0;
898
899 if (*type == 'b')
900 mask = S_IFBLK;
901 else if (*type == 'c')
902 mask = S_IFCHR;
903 else if (*type == 'd')
904 mask = S_IFDIR;
905 else if (*type == 'p')
906 mask = S_IFIFO;
907 else if (*type == 'f')
908 mask = S_IFREG;
909 else if (*type == 'l')
910 mask = S_IFLNK;
911 else if (*type == 's')
912 mask = S_IFSOCK;
913
914 if (mask == 0 || type[1] != '\0')
915 bb_error_msg_and_die(bb_msg_invalid_arg_to, type, "-type");
916
917 return mask;
918}
919#endif
920
921#if ENABLE_FEATURE_FIND_PERM \
922 || ENABLE_FEATURE_FIND_MTIME || ENABLE_FEATURE_FIND_MMIN \
923 || ENABLE_FEATURE_FIND_SIZE || ENABLE_FEATURE_FIND_LINKS
924static const char* plus_minus_num(const char* str)
925{
926 if (*str == '-' || *str == '+')
927 str++;
928 return str;
929}
930#endif
931
932/* Say no to GCCism */
933#define USE_NESTED_FUNCTION 0
934
935#if !USE_NESTED_FUNCTION
936struct pp_locals {
937 action*** appp;
938 unsigned cur_group;
939 unsigned cur_action;
940 IF_FEATURE_FIND_NOT( bool invert_flag; )
941};
942static action* alloc_action(struct pp_locals *ppl, int sizeof_struct, action_fp f)
943{
944 action *ap = xzalloc(sizeof_struct);
945 action **app;
946 action ***group = &ppl->appp[ppl->cur_group];
947 *group = app = xrealloc(*group, (ppl->cur_action+2) * sizeof(ppl->appp[0][0]));
948 app[ppl->cur_action++] = ap;
949 app[ppl->cur_action] = NULL;
950 ap->f = f;
951 IF_FEATURE_FIND_NOT( ap->invert = ppl->invert_flag; )
952 IF_FEATURE_FIND_NOT( ppl->invert_flag = 0; )
953 return ap;
954}
955#endif
956
957static action*** parse_params(char **argv)
958{
959 enum {
960 OPT_FOLLOW ,
961 IF_FEATURE_FIND_XDEV( OPT_XDEV ,)
962 IF_FEATURE_FIND_DEPTH( OPT_DEPTH ,)
963 PARM_a ,
964 PARM_o ,
965 IF_FEATURE_FIND_NOT( PARM_char_not ,)
966#if ENABLE_DESKTOP
967 PARM_and ,
968 PARM_or ,
969 IF_FEATURE_FIND_NOT( PARM_not ,)
970#endif
971 PARM_print ,
972 IF_FEATURE_FIND_PRINT0( PARM_print0 ,)
973 IF_FEATURE_FIND_PRUNE( PARM_prune ,)
974 IF_FEATURE_FIND_DELETE( PARM_delete ,)
975 IF_FEATURE_FIND_EXEC( PARM_exec ,)
976 IF_FEATURE_FIND_PAREN( PARM_char_brace,)
977 /* All options/actions starting from here require argument */
978 PARM_name ,
979 PARM_iname ,
980 IF_FEATURE_FIND_PATH( PARM_path ,)
981#if ENABLE_DESKTOP
982 /* -wholename is a synonym for -path */
983 /* We support it because Linux kernel's "make tags" uses it */
984 IF_FEATURE_FIND_PATH( PARM_wholename ,)
985#endif
986 IF_FEATURE_FIND_PATH( PARM_ipath ,)
987 IF_FEATURE_FIND_REGEX( PARM_regex ,)
988 IF_FEATURE_FIND_TYPE( PARM_type ,)
989 IF_FEATURE_FIND_PERM( PARM_perm ,)
990 IF_FEATURE_FIND_MTIME( PARM_mtime ,)
991 IF_FEATURE_FIND_MMIN( PARM_mmin ,)
992 IF_FEATURE_FIND_NEWER( PARM_newer ,)
993 IF_FEATURE_FIND_INUM( PARM_inum ,)
994 IF_FEATURE_FIND_USER( PARM_user ,)
995 IF_FEATURE_FIND_GROUP( PARM_group ,)
996 IF_FEATURE_FIND_SIZE( PARM_size ,)
997 IF_FEATURE_FIND_CONTEXT(PARM_context ,)
998 IF_FEATURE_FIND_LINKS( PARM_links ,)
999 IF_FEATURE_FIND_MAXDEPTH(OPT_MINDEPTH,OPT_MAXDEPTH,)
1000 };
1001
1002 static const char params[] ALIGN1 =
1003 "-follow\0"
1004 IF_FEATURE_FIND_XDEV( "-xdev\0" )
1005 IF_FEATURE_FIND_DEPTH( "-depth\0" )
1006 "-a\0"
1007 "-o\0"
1008 IF_FEATURE_FIND_NOT( "!\0" )
1009#if ENABLE_DESKTOP
1010 "-and\0"
1011 "-or\0"
1012 IF_FEATURE_FIND_NOT( "-not\0" )
1013#endif
1014 "-print\0"
1015 IF_FEATURE_FIND_PRINT0( "-print0\0" )
1016 IF_FEATURE_FIND_PRUNE( "-prune\0" )
1017 IF_FEATURE_FIND_DELETE( "-delete\0" )
1018 IF_FEATURE_FIND_EXEC( "-exec\0" )
1019 IF_FEATURE_FIND_PAREN( "(\0" )
1020 /* All options/actions starting from here require argument */
1021 "-name\0"
1022 "-iname\0"
1023 IF_FEATURE_FIND_PATH( "-path\0" )
1024#if ENABLE_DESKTOP
1025 IF_FEATURE_FIND_PATH( "-wholename\0")
1026#endif
1027 IF_FEATURE_FIND_PATH( "-ipath\0" )
1028 IF_FEATURE_FIND_REGEX( "-regex\0" )
1029 IF_FEATURE_FIND_TYPE( "-type\0" )
1030 IF_FEATURE_FIND_PERM( "-perm\0" )
1031 IF_FEATURE_FIND_MTIME( "-mtime\0" )
1032 IF_FEATURE_FIND_MMIN( "-mmin\0" )
1033 IF_FEATURE_FIND_NEWER( "-newer\0" )
1034 IF_FEATURE_FIND_INUM( "-inum\0" )
1035 IF_FEATURE_FIND_USER( "-user\0" )
1036 IF_FEATURE_FIND_GROUP( "-group\0" )
1037 IF_FEATURE_FIND_SIZE( "-size\0" )
1038 IF_FEATURE_FIND_CONTEXT("-context\0")
1039 IF_FEATURE_FIND_LINKS( "-links\0" )
1040 IF_FEATURE_FIND_MAXDEPTH("-mindepth\0""-maxdepth\0")
1041 ;
1042
1043#if !USE_NESTED_FUNCTION
1044 struct pp_locals ppl;
1045#define appp (ppl.appp )
1046#define cur_group (ppl.cur_group )
1047#define cur_action (ppl.cur_action )
1048#define invert_flag (ppl.invert_flag)
1049#define ALLOC_ACTION(name) (action_##name*)alloc_action(&ppl, sizeof(action_##name), (action_fp) func_##name)
1050#else
1051 action*** appp;
1052 unsigned cur_group;
1053 unsigned cur_action;
1054 IF_FEATURE_FIND_NOT( bool invert_flag; )
1055
1056 /* This is the only place in busybox where we use nested function.
1057 * So far more standard alternatives were bigger. */
1058 /* Auto decl suppresses "func without a prototype" warning: */
1059 auto action* alloc_action(int sizeof_struct, action_fp f);
1060 action* alloc_action(int sizeof_struct, action_fp f)
1061 {
1062 action *ap;
1063 appp[cur_group] = xrealloc(appp[cur_group], (cur_action+2) * sizeof(appp[0][0]));
1064 appp[cur_group][cur_action++] = ap = xzalloc(sizeof_struct);
1065 appp[cur_group][cur_action] = NULL;
1066 ap->f = f;
1067 IF_FEATURE_FIND_NOT( ap->invert = invert_flag; )
1068 IF_FEATURE_FIND_NOT( invert_flag = 0; )
1069 return ap;
1070 }
1071#define ALLOC_ACTION(name) (action_##name*)alloc_action(sizeof(action_##name), (action_fp) func_##name)
1072#endif
1073
1074 cur_group = 0;
1075 cur_action = 0;
1076 IF_FEATURE_FIND_NOT( invert_flag = 0; )
1077 appp = xzalloc(2 * sizeof(appp[0])); /* appp[0],[1] == NULL */
1078
1079 while (*argv) {
1080 const char *arg = argv[0];
1081 int parm = index_in_strings(params, arg);
1082 const char *arg1 = argv[1];
1083
1084 dbg("arg:'%s' arg1:'%s' parm:%d PARM_type:%d", arg, arg1, parm, PARM_type);
1085
1086 if (parm >= PARM_name) {
1087 /* All options/actions starting from -name require argument */
1088 if (!arg1)
1089 bb_error_msg_and_die(bb_msg_requires_arg, arg);
1090 argv++;
1091 }
1092
1093 /* We can use big switch() here, but on i386
1094 * it doesn't give smaller code. Other arches? */
1095
1096/* Options always return true. They always take effect
1097 * rather than being processed only when their place in the
1098 * expression is reached.
1099 */
1100 /* Options */
1101 if (parm == OPT_FOLLOW) {
1102 dbg("follow enabled: %d", __LINE__);
1103 G.recurse_flags |= ACTION_FOLLOWLINKS | ACTION_DANGLING_OK;
1104 }
1105#if ENABLE_FEATURE_FIND_XDEV
1106 else if (parm == OPT_XDEV) {
1107 dbg("%d", __LINE__);
1108 G.xdev_on = 1;
1109 }
1110#endif
1111#if ENABLE_FEATURE_FIND_MAXDEPTH
1112 else if (parm == OPT_MINDEPTH || parm == OPT_MINDEPTH + 1) {
1113 dbg("%d", __LINE__);
1114 G.minmaxdepth[parm - OPT_MINDEPTH] = xatoi_positive(arg1);
1115 }
1116#endif
1117#if ENABLE_FEATURE_FIND_DEPTH
1118 else if (parm == OPT_DEPTH) {
1119 dbg("%d", __LINE__);
1120 G.recurse_flags |= ACTION_DEPTHFIRST;
1121 }
1122#endif
1123/* Actions are grouped by operators
1124 * ( expr ) Force precedence
1125 * ! expr True if expr is false
1126 * -not expr Same as ! expr
1127 * expr1 [-a[nd]] expr2 And; expr2 is not evaluated if expr1 is false
1128 * expr1 -o[r] expr2 Or; expr2 is not evaluated if expr1 is true
1129 * expr1 , expr2 List; both expr1 and expr2 are always evaluated
1130 * We implement: (), -a, -o
1131 */
1132 /* Operators */
1133 else if (parm == PARM_a IF_DESKTOP(|| parm == PARM_and)) {
1134 dbg("%d", __LINE__);
1135 /* no further special handling required */
1136 }
1137 else if (parm == PARM_o IF_DESKTOP(|| parm == PARM_or)) {
1138 dbg("%d", __LINE__);
1139 /* start new OR group */
1140 cur_group++;
1141 appp = xrealloc(appp, (cur_group+2) * sizeof(appp[0]));
1142 /*appp[cur_group] = NULL; - already NULL */
1143 appp[cur_group+1] = NULL;
1144 cur_action = 0;
1145 }
1146#if ENABLE_FEATURE_FIND_NOT
1147 else if (parm == PARM_char_not IF_DESKTOP(|| parm == PARM_not)) {
1148 /* also handles "find ! ! -name 'foo*'" */
1149 invert_flag ^= 1;
1150 dbg("invert_flag:%d", invert_flag);
1151 }
1152#endif
1153 /* Actions */
1154 else if (parm == PARM_print) {
1155 dbg("%d", __LINE__);
1156 G.need_print = 0;
1157 (void) ALLOC_ACTION(print);
1158 }
1159#if ENABLE_FEATURE_FIND_PRINT0
1160 else if (parm == PARM_print0) {
1161 dbg("%d", __LINE__);
1162 G.need_print = 0;
1163 (void) ALLOC_ACTION(print0);
1164 }
1165#endif
1166#if ENABLE_FEATURE_FIND_PRUNE
1167 else if (parm == PARM_prune) {
1168 dbg("%d", __LINE__);
1169 (void) ALLOC_ACTION(prune);
1170 }
1171#endif
1172#if ENABLE_FEATURE_FIND_DELETE
1173 else if (parm == PARM_delete) {
1174 dbg("%d", __LINE__);
1175 G.need_print = 0;
1176 G.recurse_flags |= ACTION_DEPTHFIRST;
1177 (void) ALLOC_ACTION(delete);
1178 }
1179#endif
1180#if ENABLE_FEATURE_FIND_EXEC
1181 else if (parm == PARM_exec) {
1182 int i;
1183 action_exec *ap;
1184 IF_FEATURE_FIND_EXEC_PLUS(int all_subst = 0;)
1185 dbg("%d", __LINE__);
1186 G.need_print = 0;
1187 ap = ALLOC_ACTION(exec);
1188 ap->exec_argv = ++argv; /* first arg after -exec */
1189 /*ap->exec_argc = 0; - ALLOC_ACTION did it */
1190 while (1) {
1191 if (!*argv) /* did not see ';' or '+' until end */
1192 bb_error_msg_and_die(bb_msg_requires_arg, "-exec");
1193 // find -exec echo Foo ">{}<" ";"
1194 // executes "echo Foo >FILENAME<",
1195 // find -exec echo Foo ">{}<" "+"
1196 // executes "echo Foo FILENAME1 FILENAME2 FILENAME3...".
1197 if ((argv[0][0] == ';' || argv[0][0] == '+')
1198 && argv[0][1] == '\0'
1199 ) {
1200# if ENABLE_FEATURE_FIND_EXEC_PLUS
1201 if (argv[0][0] == '+')
1202 ap->filelist = xzalloc(sizeof(ap->filelist[0]));
1203# endif
1204 break;
1205 }
1206 argv++;
1207 ap->exec_argc++;
1208 }
1209 if (ap->exec_argc == 0)
1210 bb_error_msg_and_die(bb_msg_requires_arg, arg);
1211 ap->subst_count = xmalloc(ap->exec_argc * sizeof(int));
1212 i = ap->exec_argc;
1213 while (i--) {
1214 ap->subst_count[i] = count_strstr(ap->exec_argv[i], "{}");
1215 IF_FEATURE_FIND_EXEC_PLUS(all_subst += ap->subst_count[i];)
1216 }
1217# if ENABLE_FEATURE_FIND_EXEC_PLUS
1218 /*
1219 * coreutils expects {} to appear only once in "-exec +"
1220 */
1221 if (all_subst != 1 && ap->filelist)
1222 bb_error_msg_and_die("only one '{}' allowed for -exec +");
1223# endif
1224 }
1225#endif
1226#if ENABLE_FEATURE_FIND_PAREN
1227 else if (parm == PARM_char_brace) {
1228 action_paren *ap;
1229 char **endarg;
1230 unsigned nested = 1;
1231
1232 dbg("%d", __LINE__);
1233 endarg = argv;
1234 while (1) {
1235 if (!*++endarg)
1236 bb_error_msg_and_die("unpaired '('");
1237 if (LONE_CHAR(*endarg, '('))
1238 nested++;
1239 else if (LONE_CHAR(*endarg, ')') && !--nested) {
1240 *endarg = NULL;
1241 break;
1242 }
1243 }
1244 ap = ALLOC_ACTION(paren);
1245 ap->subexpr = parse_params(argv + 1);
1246 *endarg = (char*) ")"; /* restore NULLed parameter */
1247 argv = endarg;
1248 }
1249#endif
1250 else if (parm == PARM_name || parm == PARM_iname) {
1251 action_name *ap;
1252 dbg("%d", __LINE__);
1253 ap = ALLOC_ACTION(name);
1254 ap->pattern = arg1;
1255 ap->iname = (parm == PARM_iname);
1256 }
1257#if ENABLE_FEATURE_FIND_PATH
1258 else if (parm == PARM_path IF_DESKTOP(|| parm == PARM_wholename) || parm == PARM_ipath) {
1259 action_path *ap;
1260 dbg("%d", __LINE__);
1261 ap = ALLOC_ACTION(path);
1262 ap->pattern = arg1;
1263 ap->ipath = (parm == PARM_ipath);
1264 }
1265#endif
1266#if ENABLE_FEATURE_FIND_REGEX
1267 else if (parm == PARM_regex) {
1268 action_regex *ap;
1269 dbg("%d", __LINE__);
1270 ap = ALLOC_ACTION(regex);
1271 xregcomp(&ap->compiled_pattern, arg1, 0 /*cflags*/);
1272 }
1273#endif
1274#if ENABLE_FEATURE_FIND_TYPE
1275 else if (parm == PARM_type) {
1276 action_type *ap;
1277 ap = ALLOC_ACTION(type);
1278 ap->type_mask = find_type(arg1);
1279 dbg("created:type mask:%x", ap->type_mask);
1280 }
1281#endif
1282#if ENABLE_FEATURE_FIND_PERM
1283/* -perm BITS File's mode bits are exactly BITS (octal or symbolic).
1284 * Symbolic modes use mode 0 as a point of departure.
1285 * -perm -BITS All of the BITS are set in file's mode.
1286 * -perm [+/]BITS At least one of the BITS is set in file's mode.
1287 */
1288 else if (parm == PARM_perm) {
1289 action_perm *ap;
1290 dbg("%d", __LINE__);
1291 ap = ALLOC_ACTION(perm);
1292 ap->perm_char = arg1[0];
1293 arg1 = (arg1[0] == '/' ? arg1+1 : plus_minus_num(arg1));
1294 /*ap->perm_mask = 0; - ALLOC_ACTION did it */
1295 ap->perm_mask = bb_parse_mode(arg1, ap->perm_mask);
1296 if (ap->perm_mask == (mode_t)-1)
1297 bb_error_msg_and_die("invalid mode '%s'", arg1);
1298 }
1299#endif
1300#if ENABLE_FEATURE_FIND_MTIME
1301 else if (parm == PARM_mtime) {
1302 action_mtime *ap;
1303 dbg("%d", __LINE__);
1304 ap = ALLOC_ACTION(mtime);
1305 ap->mtime_char = arg1[0];
1306 ap->mtime_days = xatoul(plus_minus_num(arg1));
1307 }
1308#endif
1309#if ENABLE_FEATURE_FIND_MMIN
1310 else if (parm == PARM_mmin) {
1311 action_mmin *ap;
1312 dbg("%d", __LINE__);
1313 ap = ALLOC_ACTION(mmin);
1314 ap->mmin_char = arg1[0];
1315 ap->mmin_mins = xatoul(plus_minus_num(arg1));
1316 }
1317#endif
1318#if ENABLE_FEATURE_FIND_NEWER
1319 else if (parm == PARM_newer) {
1320 struct stat stat_newer;
1321 action_newer *ap;
1322 dbg("%d", __LINE__);
1323 ap = ALLOC_ACTION(newer);
1324 xstat(arg1, &stat_newer);
1325 ap->newer_mtime = stat_newer.st_mtime;
1326 }
1327#endif
1328#if ENABLE_FEATURE_FIND_INUM
1329 else if (parm == PARM_inum) {
1330 action_inum *ap;
1331 dbg("%d", __LINE__);
1332 ap = ALLOC_ACTION(inum);
1333 ap->inode_num = xatoul(arg1);
1334 }
1335#endif
1336#if ENABLE_FEATURE_FIND_USER
1337 else if (parm == PARM_user) {
1338 action_user *ap;
1339 dbg("%d", __LINE__);
1340 ap = ALLOC_ACTION(user);
1341 ap->uid = bb_strtou(arg1, NULL, 10);
1342 if (errno)
1343 ap->uid = xuname2uid(arg1);
1344 }
1345#endif
1346#if ENABLE_FEATURE_FIND_GROUP
1347 else if (parm == PARM_group) {
1348 action_group *ap;
1349 dbg("%d", __LINE__);
1350 ap = ALLOC_ACTION(group);
1351 ap->gid = bb_strtou(arg1, NULL, 10);
1352 if (errno)
1353 ap->gid = xgroup2gid(arg1);
1354 }
1355#endif
1356#if ENABLE_FEATURE_FIND_SIZE
1357 else if (parm == PARM_size) {
1358/* -size n[bckw]: file uses n units of space
1359 * b (default): units are 512-byte blocks
1360 * c: 1 byte
1361 * k: kilobytes
1362 * w: 2-byte words
1363 */
1364#if ENABLE_LFS
1365#define XATOU_SFX xatoull_sfx
1366#else
1367#define XATOU_SFX xatoul_sfx
1368#endif
1369 static const struct suffix_mult find_suffixes[] = {
1370 { "c", 1 },
1371 { "w", 2 },
1372 { "", 512 },
1373 { "b", 512 },
1374 { "k", 1024 },
1375 { "", 0 }
1376 };
1377 action_size *ap;
1378 dbg("%d", __LINE__);
1379 ap = ALLOC_ACTION(size);
1380 ap->size_char = arg1[0];
1381 ap->size = XATOU_SFX(plus_minus_num(arg1), find_suffixes);
1382 }
1383#endif
1384#if ENABLE_FEATURE_FIND_CONTEXT
1385 else if (parm == PARM_context) {
1386 action_context *ap;
1387 dbg("%d", __LINE__);
1388 ap = ALLOC_ACTION(context);
1389 /*ap->context = NULL; - ALLOC_ACTION did it */
1390 /* SELinux headers erroneously declare non-const parameter */
1391 if (selinux_raw_to_trans_context((char*)arg1, &ap->context))
1392 bb_simple_perror_msg(arg1);
1393 }
1394#endif
1395#if ENABLE_FEATURE_FIND_LINKS
1396 else if (parm == PARM_links) {
1397 action_links *ap;
1398 dbg("%d", __LINE__);
1399 ap = ALLOC_ACTION(links);
1400 ap->links_char = arg1[0];
1401 ap->links_count = xatoul(plus_minus_num(arg1));
1402 }
1403#endif
1404 else {
1405 bb_error_msg("unrecognized: %s", arg);
1406 bb_show_usage();
1407 }
1408 argv++;
1409 }
1410 dbg("exiting %s", __func__);
1411 return appp;
1412#undef ALLOC_ACTION
1413#undef appp
1414#undef cur_action
1415#undef invert_flag
1416}
1417
1418int find_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
1419int find_main(int argc UNUSED_PARAM, char **argv)
1420{
1421 int i, firstopt, status = EXIT_SUCCESS;
1422 char **past_HLP, *saved;
1423
1424 INIT_G();
1425
1426 /* "find -type f" + getopt("+HLP") => disaster.
1427 * Need to avoid getopt running into a non-HLP option.
1428 * Do this by temporarily storing NULL there:
1429 */
1430 past_HLP = argv;
1431 for (;;) {
1432 saved = *++past_HLP;
1433 if (!saved)
1434 break;
1435 if (saved[0] != '-')
1436 break;
1437 if (!saved[1])
1438 break; /* it is "-" */
1439 if ((saved+1)[strspn(saved+1, "HLP")] != '\0')
1440 break;
1441 }
1442 *past_HLP = NULL;
1443 /* "+": stop on first non-option */
1444 i = getopt32(argv, "+HLP");
1445 if (i & (1<<0))
1446 G.recurse_flags |= ACTION_FOLLOWLINKS_L0 | ACTION_DANGLING_OK;
1447 if (i & (1<<1))
1448 G.recurse_flags |= ACTION_FOLLOWLINKS | ACTION_DANGLING_OK;
1449 /* -P is default and is ignored */
1450 argv = past_HLP; /* same result as "argv += optind;" */
1451 *past_HLP = saved;
1452
1453 for (firstopt = 0; argv[firstopt]; firstopt++) {
1454 if (argv[firstopt][0] == '-')
1455 break;
1456 if (ENABLE_FEATURE_FIND_NOT && LONE_CHAR(argv[firstopt], '!'))
1457 break;
1458 if (ENABLE_FEATURE_FIND_PAREN && LONE_CHAR(argv[firstopt], '('))
1459 break;
1460 }
1461 if (firstopt == 0) {
1462 *--argv = (char*)".";
1463 firstopt++;
1464 }
1465
1466 G.actions = parse_params(&argv[firstopt]);
1467 argv[firstopt] = NULL;
1468
1469#if ENABLE_FEATURE_FIND_XDEV
1470 if (G.xdev_on) {
1471 struct stat stbuf;
1472
1473 G.xdev_count = firstopt;
1474 G.xdev_dev = xzalloc(G.xdev_count * sizeof(G.xdev_dev[0]));
1475 for (i = 0; argv[i]; i++) {
1476 /* not xstat(): shouldn't bomb out on
1477 * "find not_exist exist -xdev" */
1478 if (stat(argv[i], &stbuf) == 0)
1479 G.xdev_dev[i] = stbuf.st_dev;
1480 /* else G.xdev_dev[i] stays 0 and
1481 * won't match any real device dev_t
1482 */
1483 }
1484 }
1485#endif
1486
1487 for (i = 0; argv[i]; i++) {
1488 if (!recursive_action(argv[i],
1489 G.recurse_flags,/* flags */
1490 fileAction, /* file action */
1491 fileAction, /* dir action */
1492 NULL, /* user data */
1493 0) /* depth */
1494 ) {
1495 status |= EXIT_FAILURE;
1496 }
1497 }
1498
1499 IF_FEATURE_FIND_EXEC_PLUS(status |= flush_exec_plus();)
1500 return status;
1501}
1502
generated by cgit at 2024-05-15 10:12:27 (GMT)