source: branches/3.2/mindi-busybox/findutils/find.c @ 3232

Last change on this file since 3232 was 3232, checked in by Bruno Cornec, 7 years ago
  • Update mindi-busybox to 1.21.1
File size: 36.9 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_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:       "[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    -follow     Follow symlinks"
240//usage:    IF_FEATURE_FIND_XDEV(
241//usage:     "\n    -xdev       Don't descend directories on other filesystems"
242//usage:    )
243//usage:    IF_FEATURE_FIND_MAXDEPTH(
244//usage:     "\n    -maxdepth N Descend at most N levels. -maxdepth 0 applies"
245//usage:     "\n            actions to command line arguments only"
246//usage:     "\n    -mindepth N Don't act on first N levels"
247//usage:    )
248//usage:    IF_FEATURE_FIND_DEPTH(
249//usage:     "\n    -depth      Act on directory *after* traversing it"
250//usage:    )
251//usage:     "\n"
252//usage:     "\nActions:"
253//usage:    IF_FEATURE_FIND_PAREN(
254//usage:     "\n    ( ACTIONS ) Group actions for -o / -a"
255//usage:    )
256//usage:    IF_FEATURE_FIND_NOT(
257//usage:     "\n    ! ACT       Invert ACT's success/failure"
258//usage:    )
259//usage:     "\n    ACT1 [-a] ACT2  If ACT1 fails, stop, else do ACT2"
260//usage:     "\n    ACT1 -o ACT2    If ACT1 succeeds, stop, else do ACT2"
261//usage:     "\n            Note: -a has higher priority than -o"
262//usage:     "\n    -name PATTERN   Match file name (w/o directory name) to PATTERN"
263//usage:     "\n    -iname PATTERN  Case insensitive -name"
264//usage:    IF_FEATURE_FIND_PATH(
265//usage:     "\n    -path PATTERN   Match path to PATTERN"
266//usage:     "\n    -ipath PATTERN  Case insensitive -path"
267//usage:    )
268//usage:    IF_FEATURE_FIND_REGEX(
269//usage:     "\n    -regex PATTERN  Match path to regex PATTERN"
270//usage:    )
271//usage:    IF_FEATURE_FIND_TYPE(
272//usage:     "\n    -type X     File type is X (one of: f,d,l,b,c,...)"
273//usage:    )
274//usage:    IF_FEATURE_FIND_PERM(
275//usage:     "\n    -perm MASK  At least one mask bit (+MASK), all bits (-MASK),"
276//usage:     "\n            or exactly MASK bits are set in file's mode"
277//usage:    )
278//usage:    IF_FEATURE_FIND_MTIME(
279//usage:     "\n    -mtime DAYS mtime is greater than (+N), less than (-N),"
280//usage:     "\n            or exactly N days in the past"
281//usage:    )
282//usage:    IF_FEATURE_FIND_MMIN(
283//usage:     "\n    -mmin MINS  mtime is greater than (+N), less than (-N),"
284//usage:     "\n            or exactly N minutes in the past"
285//usage:    )
286//usage:    IF_FEATURE_FIND_NEWER(
287//usage:     "\n    -newer FILE mtime is more recent than FILE's"
288//usage:    )
289//usage:    IF_FEATURE_FIND_INUM(
290//usage:     "\n    -inum N     File has inode number N"
291//usage:    )
292//usage:    IF_FEATURE_FIND_USER(
293//usage:     "\n    -user NAME/ID   File is owned by given user"
294//usage:    )
295//usage:    IF_FEATURE_FIND_GROUP(
296//usage:     "\n    -group NAME/ID  File is owned by given group"
297//usage:    )
298//usage:    IF_FEATURE_FIND_SIZE(
299//usage:     "\n    -size N[bck]    File size is N (c:bytes,k:kbytes,b:512 bytes(def.))"
300//usage:     "\n            +/-N: file size is bigger/smaller than N"
301//usage:    )
302//usage:    IF_FEATURE_FIND_LINKS(
303//usage:     "\n    -links N    Number of links is greater than (+N), less than (-N),"
304//usage:     "\n            or exactly N"
305//usage:    )
306//usage:    IF_FEATURE_FIND_CONTEXT(
307//usage:     "\n    -context CTX    File has specified security context"
308//usage:    )
309//usage:    IF_FEATURE_FIND_PRUNE(
310//usage:     "\n    -prune      If current file is directory, don't descend into it"
311//usage:    )
312//usage:     "\nIf none of the following actions is specified, -print is assumed"
313//usage:     "\n    -print      Print file name"
314//usage:    IF_FEATURE_FIND_PRINT0(
315//usage:     "\n    -print0     Print file name, NUL terminated"
316//usage:    )
317//usage:    IF_FEATURE_FIND_EXEC(
318//usage:     "\n    -exec CMD ARG ; Run CMD with all instances of {} replaced by"
319//usage:     "\n            file name. Fails if CMD exits with nonzero"
320//usage:    )
321//usage:    IF_FEATURE_FIND_DELETE(
322//usage:     "\n    -delete     Delete current file/directory. Turns on -depth option"
323//usage:    )
324//usage:
325//usage:#define find_example_usage
326//usage:       "$ find / -name passwd\n"
327//usage:       "/etc/passwd\n"
328
329#include <fnmatch.h>
330#include "libbb.h"
331#if ENABLE_FEATURE_FIND_REGEX
332# include "xregex.h"
333#endif
334/* GNUism: */
335#ifndef FNM_CASEFOLD
336# define FNM_CASEFOLD 0
337#endif
338
339#define dbg(...) ((void)0)
340/* #define dbg(...) bb_error_msg(__VA_ARGS__) */
341
342/* This is a NOEXEC applet. Be very careful! */
343
344
345typedef int (*action_fp)(const char *fileName, const struct stat *statbuf, void *) FAST_FUNC;
346
347typedef struct {
348    action_fp f;
349#if ENABLE_FEATURE_FIND_NOT
350    bool invert;
351#endif
352} action;
353
354#define ACTS(name, ...) typedef struct { action a; __VA_ARGS__ } action_##name;
355#define ACTF(name) \
356    static int FAST_FUNC func_##name(const char *fileName UNUSED_PARAM, \
357        const struct stat *statbuf UNUSED_PARAM, \
358        action_##name* ap UNUSED_PARAM)
359
360                        ACTS(print)
361                        ACTS(name,  const char *pattern; bool iname;)
362IF_FEATURE_FIND_PATH(   ACTS(path,  const char *pattern; bool ipath;))
363IF_FEATURE_FIND_REGEX(  ACTS(regex, regex_t compiled_pattern;))
364IF_FEATURE_FIND_PRINT0( ACTS(print0))
365IF_FEATURE_FIND_TYPE(   ACTS(type,  int type_mask;))
366IF_FEATURE_FIND_PERM(   ACTS(perm,  char perm_char; mode_t perm_mask;))
367IF_FEATURE_FIND_MTIME(  ACTS(mtime, char mtime_char; unsigned mtime_days;))
368IF_FEATURE_FIND_MMIN(   ACTS(mmin,  char mmin_char; unsigned mmin_mins;))
369IF_FEATURE_FIND_NEWER(  ACTS(newer, time_t newer_mtime;))
370IF_FEATURE_FIND_INUM(   ACTS(inum,  ino_t inode_num;))
371IF_FEATURE_FIND_USER(   ACTS(user,  uid_t uid;))
372IF_FEATURE_FIND_SIZE(   ACTS(size,  char size_char; off_t size;))
373IF_FEATURE_FIND_CONTEXT(ACTS(context, security_context_t context;))
374IF_FEATURE_FIND_PAREN(  ACTS(paren, action ***subexpr;))
375IF_FEATURE_FIND_PRUNE(  ACTS(prune))
376IF_FEATURE_FIND_DELETE( ACTS(delete))
377IF_FEATURE_FIND_EXEC(   ACTS(exec,  char **exec_argv; unsigned *subst_count; int exec_argc;))
378IF_FEATURE_FIND_GROUP(  ACTS(group, gid_t gid;))
379IF_FEATURE_FIND_LINKS(  ACTS(links, char links_char; int links_count;))
380
381struct globals {
382    IF_FEATURE_FIND_XDEV(dev_t *xdev_dev;)
383    IF_FEATURE_FIND_XDEV(int xdev_count;)
384#if ENABLE_FEATURE_FIND_MAXDEPTH
385    int minmaxdepth[2];
386#endif
387    action ***actions;
388    smallint need_print;
389    smallint xdev_on;
390    recurse_flags_t recurse_flags;
391} FIX_ALIASING;
392#define G (*(struct globals*)&bb_common_bufsiz1)
393#define INIT_G() do { \
394    struct G_sizecheck { \
395        char G_sizecheck[sizeof(G) > COMMON_BUFSIZE ? -1 : 1]; \
396    }; \
397    /* we have to zero it out because of NOEXEC */ \
398    memset(&G, 0, sizeof(G)); \
399    IF_FEATURE_FIND_MAXDEPTH(G.minmaxdepth[1] = INT_MAX;) \
400    G.need_print = 1; \
401    G.recurse_flags = ACTION_RECURSE; \
402} while (0)
403
404#if ENABLE_FEATURE_FIND_EXEC
405static unsigned count_subst(const char *str)
406{
407    unsigned count = 0;
408    while ((str = strstr(str, "{}")) != NULL) {
409        count++;
410        str++;
411    }
412    return count;
413}
414
415
416static char* subst(const char *src, unsigned count, const char* filename)
417{
418    char *buf, *dst, *end;
419    size_t flen = strlen(filename);
420    /* we replace each '{}' with filename: growth by strlen-2 */
421    buf = dst = xmalloc(strlen(src) + count*(flen-2) + 1);
422    while ((end = strstr(src, "{}"))) {
423        memcpy(dst, src, end - src);
424        dst += end - src;
425        src = end + 2;
426        memcpy(dst, filename, flen);
427        dst += flen;
428    }
429    strcpy(dst, src);
430    return buf;
431}
432#endif
433
434/* Return values of ACTFs ('action functions') are a bit mask:
435 * bit 1=1: prune (use SKIP constant for setting it)
436 * bit 0=1: matched successfully (TRUE)
437 */
438
439static int exec_actions(action ***appp, const char *fileName, const struct stat *statbuf)
440{
441    int cur_group;
442    int cur_action;
443    int rc = 0;
444    action **app, *ap;
445
446    /* "action group" is a set of actions ANDed together.
447     * groups are ORed together.
448     * We simply evaluate each group until we find one in which all actions
449     * succeed. */
450
451    /* -prune is special: if it is encountered, then we won't
452     * descend into current directory. It doesn't matter whether
453     * action group (in which -prune sits) will succeed or not:
454     * find * -prune -name 'f*' -o -name 'm*' -- prunes every dir
455     * find * -name 'f*' -o -prune -name 'm*' -- prunes all dirs
456     *     not starting with 'f' */
457
458    /* We invert TRUE bit (bit 0). Now 1 there means 'failure'.
459     * and bitwise OR in "rc |= TRUE ^ ap->f()" will:
460     * (1) make SKIP (-prune) bit stick; and (2) detect 'failure'.
461     * On return, bit is restored.  */
462
463    cur_group = -1;
464    while ((app = appp[++cur_group]) != NULL) {
465        rc &= ~TRUE; /* 'success' so far, clear TRUE bit */
466        cur_action = -1;
467        while (1) {
468            ap = app[++cur_action];
469            if (!ap) /* all actions in group were successful */
470                return rc ^ TRUE; /* restore TRUE bit */
471            rc |= TRUE ^ ap->f(fileName, statbuf, ap);
472#if ENABLE_FEATURE_FIND_NOT
473            if (ap->invert) rc ^= TRUE;
474#endif
475            dbg("grp %d action %d rc:0x%x", cur_group, cur_action, rc);
476            if (rc & TRUE) /* current group failed, try next */
477                break;
478        }
479    }
480    dbg("returning:0x%x", rc ^ TRUE);
481    return rc ^ TRUE; /* restore TRUE bit */
482}
483
484
485#if !FNM_CASEFOLD
486static char *strcpy_upcase(char *dst, const char *src)
487{
488    char *d = dst;
489    while (1) {
490        unsigned char ch = *src++;
491        if (ch >= 'a' && ch <= 'z')
492            ch -= ('a' - 'A');
493        *d++ = ch;
494        if (ch == '\0')
495            break;
496    }
497    return dst;
498}
499#endif
500
501ACTF(name)
502{
503    const char *tmp = bb_basename(fileName);
504    if (tmp != fileName && *tmp == '\0') {
505        /* "foo/bar/". Oh no... go back to 'b' */
506        tmp--;
507        while (tmp != fileName && *--tmp != '/')
508            continue;
509        if (*tmp == '/')
510            tmp++;
511    }
512    /* Was using FNM_PERIOD flag too,
513     * but somewhere between 4.1.20 and 4.4.0 GNU find stopped using it.
514     * find -name '*foo' should match .foo too:
515     */
516#if FNM_CASEFOLD
517    return fnmatch(ap->pattern, tmp, (ap->iname ? FNM_CASEFOLD : 0)) == 0;
518#else
519    if (ap->iname)
520        tmp = strcpy_upcase(alloca(strlen(tmp) + 1), tmp);
521    return fnmatch(ap->pattern, tmp, 0) == 0;
522#endif
523}
524
525#if ENABLE_FEATURE_FIND_PATH
526ACTF(path)
527{
528# if FNM_CASEFOLD
529    return fnmatch(ap->pattern, fileName, (ap->ipath ? FNM_CASEFOLD : 0)) == 0;
530# else
531    if (ap->ipath)
532        fileName = strcpy_upcase(alloca(strlen(fileName) + 1), fileName);
533    return fnmatch(ap->pattern, fileName, 0) == 0;
534# endif
535}
536#endif
537#if ENABLE_FEATURE_FIND_REGEX
538ACTF(regex)
539{
540    regmatch_t match;
541    if (regexec(&ap->compiled_pattern, fileName, 1, &match, 0 /*eflags*/))
542        return 0; /* no match */
543    if (match.rm_so)
544        return 0; /* match doesn't start at pos 0 */
545    if (fileName[match.rm_eo])
546        return 0; /* match doesn't end exactly at end of pathname */
547    return 1;
548}
549#endif
550#if ENABLE_FEATURE_FIND_TYPE
551ACTF(type)
552{
553    return ((statbuf->st_mode & S_IFMT) == ap->type_mask);
554}
555#endif
556#if ENABLE_FEATURE_FIND_PERM
557ACTF(perm)
558{
559    /* -perm +mode: at least one of perm_mask bits are set */
560    if (ap->perm_char == '+')
561        return (statbuf->st_mode & ap->perm_mask) != 0;
562    /* -perm -mode: all of perm_mask are set */
563    if (ap->perm_char == '-')
564        return (statbuf->st_mode & ap->perm_mask) == ap->perm_mask;
565    /* -perm mode: file mode must match perm_mask */
566    return (statbuf->st_mode & 07777) == ap->perm_mask;
567}
568#endif
569#if ENABLE_FEATURE_FIND_MTIME
570ACTF(mtime)
571{
572    time_t file_age = time(NULL) - statbuf->st_mtime;
573    time_t mtime_secs = ap->mtime_days * 24*60*60;
574    if (ap->mtime_char == '+')
575        return file_age >= mtime_secs + 24*60*60;
576    if (ap->mtime_char == '-')
577        return file_age < mtime_secs;
578    /* just numeric mtime */
579    return file_age >= mtime_secs && file_age < (mtime_secs + 24*60*60);
580}
581#endif
582#if ENABLE_FEATURE_FIND_MMIN
583ACTF(mmin)
584{
585    time_t file_age = time(NULL) - statbuf->st_mtime;
586    time_t mmin_secs = ap->mmin_mins * 60;
587    if (ap->mmin_char == '+')
588        return file_age >= mmin_secs + 60;
589    if (ap->mmin_char == '-')
590        return file_age < mmin_secs;
591    /* just numeric mmin */
592    return file_age >= mmin_secs && file_age < (mmin_secs + 60);
593}
594#endif
595#if ENABLE_FEATURE_FIND_NEWER
596ACTF(newer)
597{
598    return (ap->newer_mtime < statbuf->st_mtime);
599}
600#endif
601#if ENABLE_FEATURE_FIND_INUM
602ACTF(inum)
603{
604    return (statbuf->st_ino == ap->inode_num);
605}
606#endif
607#if ENABLE_FEATURE_FIND_EXEC
608ACTF(exec)
609{
610    int i, rc;
611#if ENABLE_USE_PORTABLE_CODE
612    char **argv = alloca(sizeof(char*) * (ap->exec_argc + 1));
613#else /* gcc 4.3.1 generates smaller code: */
614    char *argv[ap->exec_argc + 1];
615#endif
616    for (i = 0; i < ap->exec_argc; i++)
617        argv[i] = subst(ap->exec_argv[i], ap->subst_count[i], fileName);
618    argv[i] = NULL; /* terminate the list */
619
620    rc = spawn_and_wait(argv);
621    if (rc < 0)
622        bb_simple_perror_msg(argv[0]);
623
624    i = 0;
625    while (argv[i])
626        free(argv[i++]);
627    return rc == 0; /* return 1 if exitcode 0 */
628}
629#endif
630#if ENABLE_FEATURE_FIND_USER
631ACTF(user)
632{
633    return (statbuf->st_uid == ap->uid);
634}
635#endif
636#if ENABLE_FEATURE_FIND_GROUP
637ACTF(group)
638{
639    return (statbuf->st_gid == ap->gid);
640}
641#endif
642#if ENABLE_FEATURE_FIND_PRINT0
643ACTF(print0)
644{
645    printf("%s%c", fileName, '\0');
646    return TRUE;
647}
648#endif
649ACTF(print)
650{
651    puts(fileName);
652    return TRUE;
653}
654#if ENABLE_FEATURE_FIND_PAREN
655ACTF(paren)
656{
657    return exec_actions(ap->subexpr, fileName, statbuf);
658}
659#endif
660#if ENABLE_FEATURE_FIND_SIZE
661ACTF(size)
662{
663    if (ap->size_char == '+')
664        return statbuf->st_size > ap->size;
665    if (ap->size_char == '-')
666        return statbuf->st_size < ap->size;
667    return statbuf->st_size == ap->size;
668}
669#endif
670#if ENABLE_FEATURE_FIND_PRUNE
671/*
672 * -prune: if -depth is not given, return true and do not descend
673 * current dir; if -depth is given, return false with no effect.
674 * Example:
675 * find dir -name 'asm-*' -prune -o -name '*.[chS]' -print
676 */
677ACTF(prune)
678{
679    return SKIP + TRUE;
680}
681#endif
682#if ENABLE_FEATURE_FIND_DELETE
683ACTF(delete)
684{
685    int rc;
686    if (S_ISDIR(statbuf->st_mode)) {
687        rc = rmdir(fileName);
688    } else {
689        rc = unlink(fileName);
690    }
691    if (rc < 0)
692        bb_simple_perror_msg(fileName);
693    return TRUE;
694}
695#endif
696#if ENABLE_FEATURE_FIND_CONTEXT
697ACTF(context)
698{
699    security_context_t con;
700    int rc;
701
702    if (G.recurse_flags & ACTION_FOLLOWLINKS) {
703        rc = getfilecon(fileName, &con);
704    } else {
705        rc = lgetfilecon(fileName, &con);
706    }
707    if (rc < 0)
708        return FALSE;
709    rc = strcmp(ap->context, con);
710    freecon(con);
711    return rc == 0;
712}
713#endif
714#if ENABLE_FEATURE_FIND_LINKS
715ACTF(links)
716{
717    switch(ap->links_char) {
718    case '-' : return (statbuf->st_nlink <  ap->links_count);
719    case '+' : return (statbuf->st_nlink >  ap->links_count);
720    default:   return (statbuf->st_nlink == ap->links_count);
721    }
722}
723#endif
724
725static int FAST_FUNC fileAction(const char *fileName,
726        struct stat *statbuf,
727        void *userData UNUSED_PARAM,
728        int depth IF_NOT_FEATURE_FIND_MAXDEPTH(UNUSED_PARAM))
729{
730    int r;
731    int same_fs = 1;
732
733#if ENABLE_FEATURE_FIND_XDEV
734    if (S_ISDIR(statbuf->st_mode) && G.xdev_count) {
735        int i;
736        for (i = 0; i < G.xdev_count; i++) {
737            if (G.xdev_dev[i] == statbuf->st_dev)
738                goto found;
739        }
740        //bb_error_msg("'%s': not same fs", fileName);
741        same_fs = 0;
742 found: ;
743    }
744#endif
745
746#if ENABLE_FEATURE_FIND_MAXDEPTH
747    if (depth < G.minmaxdepth[0]) {
748        if (same_fs)
749            return TRUE; /* skip this, continue recursing */
750        return SKIP; /* stop recursing */
751    }
752    if (depth > G.minmaxdepth[1])
753        return SKIP; /* stop recursing */
754#endif
755
756    r = exec_actions(G.actions, fileName, statbuf);
757    /* Had no explicit -print[0] or -exec? then print */
758    if ((r & TRUE) && G.need_print)
759        puts(fileName);
760
761#if ENABLE_FEATURE_FIND_MAXDEPTH
762    if (S_ISDIR(statbuf->st_mode)) {
763        if (depth == G.minmaxdepth[1])
764            return SKIP;
765    }
766#endif
767    /* -xdev stops on mountpoints, but AFTER mountpoit itself
768     * is processed as usual */
769    if (!same_fs) {
770        return SKIP;
771    }
772
773    /* Cannot return 0: our caller, recursive_action(),
774     * will perror() and skip dirs (if called on dir) */
775    return (r & SKIP) ? SKIP : TRUE;
776}
777
778
779#if ENABLE_FEATURE_FIND_TYPE
780static int find_type(const char *type)
781{
782    int mask = 0;
783
784    if (*type == 'b')
785        mask = S_IFBLK;
786    else if (*type == 'c')
787        mask = S_IFCHR;
788    else if (*type == 'd')
789        mask = S_IFDIR;
790    else if (*type == 'p')
791        mask = S_IFIFO;
792    else if (*type == 'f')
793        mask = S_IFREG;
794    else if (*type == 'l')
795        mask = S_IFLNK;
796    else if (*type == 's')
797        mask = S_IFSOCK;
798
799    if (mask == 0 || type[1] != '\0')
800        bb_error_msg_and_die(bb_msg_invalid_arg, type, "-type");
801
802    return mask;
803}
804#endif
805
806#if ENABLE_FEATURE_FIND_PERM \
807 || ENABLE_FEATURE_FIND_MTIME || ENABLE_FEATURE_FIND_MMIN \
808 || ENABLE_FEATURE_FIND_SIZE  || ENABLE_FEATURE_FIND_LINKS
809static const char* plus_minus_num(const char* str)
810{
811    if (*str == '-' || *str == '+')
812        str++;
813    return str;
814}
815#endif
816
817static action*** parse_params(char **argv)
818{
819    enum {
820                            OPT_FOLLOW     ,
821    IF_FEATURE_FIND_XDEV(   OPT_XDEV       ,)
822    IF_FEATURE_FIND_DEPTH(  OPT_DEPTH      ,)
823                            PARM_a         ,
824                            PARM_o         ,
825    IF_FEATURE_FIND_NOT(    PARM_char_not  ,)
826#if ENABLE_DESKTOP
827                            PARM_and       ,
828                            PARM_or        ,
829    IF_FEATURE_FIND_NOT(    PARM_not       ,)
830#endif
831                            PARM_print     ,
832    IF_FEATURE_FIND_PRINT0( PARM_print0    ,)
833    IF_FEATURE_FIND_PRUNE(  PARM_prune     ,)
834    IF_FEATURE_FIND_DELETE( PARM_delete    ,)
835    IF_FEATURE_FIND_EXEC(   PARM_exec      ,)
836    IF_FEATURE_FIND_PAREN(  PARM_char_brace,)
837    /* All options/actions starting from here require argument */
838                            PARM_name      ,
839                            PARM_iname     ,
840    IF_FEATURE_FIND_PATH(   PARM_path      ,)
841#if ENABLE_DESKTOP
842    /* -wholename is a synonym for -path */
843    /* We support it because Linux kernel's "make tags" uses it */
844    IF_FEATURE_FIND_PATH(   PARM_wholename ,)
845#endif
846    IF_FEATURE_FIND_PATH(   PARM_ipath     ,)
847    IF_FEATURE_FIND_REGEX(  PARM_regex     ,)
848    IF_FEATURE_FIND_TYPE(   PARM_type      ,)
849    IF_FEATURE_FIND_PERM(   PARM_perm      ,)
850    IF_FEATURE_FIND_MTIME(  PARM_mtime     ,)
851    IF_FEATURE_FIND_MMIN(   PARM_mmin      ,)
852    IF_FEATURE_FIND_NEWER(  PARM_newer     ,)
853    IF_FEATURE_FIND_INUM(   PARM_inum      ,)
854    IF_FEATURE_FIND_USER(   PARM_user      ,)
855    IF_FEATURE_FIND_GROUP(  PARM_group     ,)
856    IF_FEATURE_FIND_SIZE(   PARM_size      ,)
857    IF_FEATURE_FIND_CONTEXT(PARM_context   ,)
858    IF_FEATURE_FIND_LINKS(  PARM_links     ,)
859    IF_FEATURE_FIND_MAXDEPTH(OPT_MINDEPTH,OPT_MAXDEPTH,)
860    };
861
862    static const char params[] ALIGN1 =
863                            "-follow\0"
864    IF_FEATURE_FIND_XDEV(   "-xdev\0"                 )
865    IF_FEATURE_FIND_DEPTH(  "-depth\0"                )
866                            "-a\0"
867                            "-o\0"
868    IF_FEATURE_FIND_NOT(    "!\0"       )
869#if ENABLE_DESKTOP
870                            "-and\0"
871                            "-or\0"
872    IF_FEATURE_FIND_NOT(    "-not\0"    )
873#endif
874                            "-print\0"
875    IF_FEATURE_FIND_PRINT0( "-print0\0" )
876    IF_FEATURE_FIND_PRUNE(  "-prune\0"  )
877    IF_FEATURE_FIND_DELETE( "-delete\0" )
878    IF_FEATURE_FIND_EXEC(   "-exec\0"   )
879    IF_FEATURE_FIND_PAREN(  "(\0"       )
880    /* All options/actions starting from here require argument */
881                            "-name\0"
882                            "-iname\0"
883    IF_FEATURE_FIND_PATH(   "-path\0"   )
884#if ENABLE_DESKTOP
885    IF_FEATURE_FIND_PATH(   "-wholename\0")
886#endif
887    IF_FEATURE_FIND_PATH(   "-ipath\0"  )
888    IF_FEATURE_FIND_REGEX(  "-regex\0"  )
889    IF_FEATURE_FIND_TYPE(   "-type\0"   )
890    IF_FEATURE_FIND_PERM(   "-perm\0"   )
891    IF_FEATURE_FIND_MTIME(  "-mtime\0"  )
892    IF_FEATURE_FIND_MMIN(   "-mmin\0"   )
893    IF_FEATURE_FIND_NEWER(  "-newer\0"  )
894    IF_FEATURE_FIND_INUM(   "-inum\0"   )
895    IF_FEATURE_FIND_USER(   "-user\0"   )
896    IF_FEATURE_FIND_GROUP(  "-group\0"  )
897    IF_FEATURE_FIND_SIZE(   "-size\0"   )
898    IF_FEATURE_FIND_CONTEXT("-context\0")
899    IF_FEATURE_FIND_LINKS(  "-links\0"  )
900    IF_FEATURE_FIND_MAXDEPTH("-mindepth\0""-maxdepth\0")
901    ;
902
903    action*** appp;
904    unsigned cur_group = 0;
905    unsigned cur_action = 0;
906    IF_FEATURE_FIND_NOT( bool invert_flag = 0; )
907
908    /* This is the only place in busybox where we use nested function.
909     * So far more standard alternatives were bigger. */
910    /* Auto decl suppresses "func without a prototype" warning: */
911    auto action* alloc_action(int sizeof_struct, action_fp f);
912    action* alloc_action(int sizeof_struct, action_fp f)
913    {
914        action *ap;
915        appp[cur_group] = xrealloc(appp[cur_group], (cur_action+2) * sizeof(*appp));
916        appp[cur_group][cur_action++] = ap = xzalloc(sizeof_struct);
917        appp[cur_group][cur_action] = NULL;
918        ap->f = f;
919        IF_FEATURE_FIND_NOT( ap->invert = invert_flag; )
920        IF_FEATURE_FIND_NOT( invert_flag = 0; )
921        return ap;
922    }
923
924#define ALLOC_ACTION(name) (action_##name*)alloc_action(sizeof(action_##name), (action_fp) func_##name)
925
926    appp = xzalloc(2 * sizeof(appp[0])); /* appp[0],[1] == NULL */
927
928    while (*argv) {
929        const char *arg = argv[0];
930        int parm = index_in_strings(params, arg);
931        const char *arg1 = argv[1];
932
933        dbg("arg:'%s' arg1:'%s' parm:%d PARM_type:%d", arg, arg1, parm, PARM_type);
934
935        if (parm >= PARM_name) {
936            /* All options/actions starting from -name require argument */
937            if (!arg1)
938                bb_error_msg_and_die(bb_msg_requires_arg, arg);
939            argv++;
940        }
941
942        /* We can use big switch() here, but on i386
943         * it doesn't give smaller code. Other arches? */
944
945/* Options always return true. They always take effect
946 * rather than being processed only when their place in the
947 * expression is reached.
948 */
949        /* Options */
950        if (parm == OPT_FOLLOW) {
951                        dbg("follow enabled: %d", __LINE__);
952                        G.recurse_flags |= ACTION_FOLLOWLINKS | ACTION_DANGLING_OK;
953        }
954#if ENABLE_FEATURE_FIND_XDEV
955        else if (parm == OPT_XDEV) {
956            dbg("%d", __LINE__);
957            G.xdev_on = 1;
958        }
959#endif
960#if ENABLE_FEATURE_FIND_MAXDEPTH
961        else if (parm == OPT_MINDEPTH || parm == OPT_MINDEPTH + 1) {
962            dbg("%d", __LINE__);
963            G.minmaxdepth[parm - OPT_MINDEPTH] = xatoi_positive(arg1);
964        }
965#endif
966#if ENABLE_FEATURE_FIND_DEPTH
967        else if (parm == OPT_DEPTH) {
968            dbg("%d", __LINE__);
969            G.recurse_flags |= ACTION_DEPTHFIRST;
970        }
971#endif
972/* Actions are grouped by operators
973 * ( expr )              Force precedence
974 * ! expr                True if expr is false
975 * -not expr             Same as ! expr
976 * expr1 [-a[nd]] expr2  And; expr2 is not evaluated if expr1 is false
977 * expr1 -o[r] expr2     Or; expr2 is not evaluated if expr1 is true
978 * expr1 , expr2         List; both expr1 and expr2 are always evaluated
979 * We implement: (), -a, -o
980 */
981        /* Operators */
982        else if (parm == PARM_a IF_DESKTOP(|| parm == PARM_and)) {
983            dbg("%d", __LINE__);
984            /* no further special handling required */
985        }
986        else if (parm == PARM_o IF_DESKTOP(|| parm == PARM_or)) {
987            dbg("%d", __LINE__);
988            /* start new OR group */
989            cur_group++;
990            appp = xrealloc(appp, (cur_group+2) * sizeof(*appp));
991            /*appp[cur_group] = NULL; - already NULL */
992            appp[cur_group+1] = NULL;
993            cur_action = 0;
994        }
995#if ENABLE_FEATURE_FIND_NOT
996        else if (parm == PARM_char_not IF_DESKTOP(|| parm == PARM_not)) {
997            /* also handles "find ! ! -name 'foo*'" */
998            invert_flag ^= 1;
999            dbg("invert_flag:%d", invert_flag);
1000        }
1001#endif
1002        /* Actions */
1003        else if (parm == PARM_print) {
1004            dbg("%d", __LINE__);
1005            G.need_print = 0;
1006            (void) ALLOC_ACTION(print);
1007        }
1008#if ENABLE_FEATURE_FIND_PRINT0
1009        else if (parm == PARM_print0) {
1010            dbg("%d", __LINE__);
1011            G.need_print = 0;
1012            (void) ALLOC_ACTION(print0);
1013        }
1014#endif
1015#if ENABLE_FEATURE_FIND_PRUNE
1016        else if (parm == PARM_prune) {
1017            dbg("%d", __LINE__);
1018            (void) ALLOC_ACTION(prune);
1019        }
1020#endif
1021#if ENABLE_FEATURE_FIND_DELETE
1022        else if (parm == PARM_delete) {
1023            dbg("%d", __LINE__);
1024            G.need_print = 0;
1025            G.recurse_flags |= ACTION_DEPTHFIRST;
1026            (void) ALLOC_ACTION(delete);
1027        }
1028#endif
1029#if ENABLE_FEATURE_FIND_EXEC
1030        else if (parm == PARM_exec) {
1031            int i;
1032            action_exec *ap;
1033            dbg("%d", __LINE__);
1034            G.need_print = 0;
1035            ap = ALLOC_ACTION(exec);
1036            ap->exec_argv = ++argv; /* first arg after -exec */
1037            /*ap->exec_argc = 0; - ALLOC_ACTION did it */
1038            while (1) {
1039                if (!*argv) /* did not see ';' or '+' until end */
1040                    bb_error_msg_and_die(bb_msg_requires_arg, "-exec");
1041                // find -exec echo Foo ">{}<" ";"
1042                // executes "echo Foo >FILENAME<",
1043                // find -exec echo Foo ">{}<" "+"
1044                // executes "echo Foo FILENAME1 FILENAME2 FILENAME3...".
1045                // TODO (so far we treat "+" just like ";")
1046                if ((argv[0][0] == ';' || argv[0][0] == '+')
1047                 && argv[0][1] == '\0'
1048                ) {
1049                    break;
1050                }
1051                argv++;
1052                ap->exec_argc++;
1053            }
1054            if (ap->exec_argc == 0)
1055                bb_error_msg_and_die(bb_msg_requires_arg, arg);
1056            ap->subst_count = xmalloc(ap->exec_argc * sizeof(int));
1057            i = ap->exec_argc;
1058            while (i--)
1059                ap->subst_count[i] = count_subst(ap->exec_argv[i]);
1060        }
1061#endif
1062#if ENABLE_FEATURE_FIND_PAREN
1063        else if (parm == PARM_char_brace) {
1064            action_paren *ap;
1065            char **endarg;
1066            unsigned nested = 1;
1067
1068            dbg("%d", __LINE__);
1069            endarg = argv;
1070            while (1) {
1071                if (!*++endarg)
1072                    bb_error_msg_and_die("unpaired '('");
1073                if (LONE_CHAR(*endarg, '('))
1074                    nested++;
1075                else if (LONE_CHAR(*endarg, ')') && !--nested) {
1076                    *endarg = NULL;
1077                    break;
1078                }
1079            }
1080            ap = ALLOC_ACTION(paren);
1081            ap->subexpr = parse_params(argv + 1);
1082            *endarg = (char*) ")"; /* restore NULLed parameter */
1083            argv = endarg;
1084        }
1085#endif
1086        else if (parm == PARM_name || parm == PARM_iname) {
1087            action_name *ap;
1088            dbg("%d", __LINE__);
1089            ap = ALLOC_ACTION(name);
1090            ap->pattern = arg1;
1091            ap->iname = (parm == PARM_iname);
1092        }
1093#if ENABLE_FEATURE_FIND_PATH
1094        else if (parm == PARM_path IF_DESKTOP(|| parm == PARM_wholename) || parm == PARM_ipath) {
1095            action_path *ap;
1096            dbg("%d", __LINE__);
1097            ap = ALLOC_ACTION(path);
1098            ap->pattern = arg1;
1099            ap->ipath = (parm == PARM_ipath);
1100        }
1101#endif
1102#if ENABLE_FEATURE_FIND_REGEX
1103        else if (parm == PARM_regex) {
1104            action_regex *ap;
1105            dbg("%d", __LINE__);
1106            ap = ALLOC_ACTION(regex);
1107            xregcomp(&ap->compiled_pattern, arg1, 0 /*cflags*/);
1108        }
1109#endif
1110#if ENABLE_FEATURE_FIND_TYPE
1111        else if (parm == PARM_type) {
1112            action_type *ap;
1113            ap = ALLOC_ACTION(type);
1114            ap->type_mask = find_type(arg1);
1115            dbg("created:type mask:%x", ap->type_mask);
1116        }
1117#endif
1118#if ENABLE_FEATURE_FIND_PERM
1119/* -perm BITS   File's mode bits are exactly BITS (octal or symbolic).
1120 *              Symbolic modes use mode 0 as a point of departure.
1121 * -perm -BITS  All of the BITS are set in file's mode.
1122 * -perm +BITS  At least one of the BITS is set in file's mode.
1123 */
1124        else if (parm == PARM_perm) {
1125            action_perm *ap;
1126            dbg("%d", __LINE__);
1127            ap = ALLOC_ACTION(perm);
1128            ap->perm_char = arg1[0];
1129            arg1 = plus_minus_num(arg1);
1130            /*ap->perm_mask = 0; - ALLOC_ACTION did it */
1131            if (!bb_parse_mode(arg1, &ap->perm_mask))
1132                bb_error_msg_and_die("invalid mode '%s'", arg1);
1133        }
1134#endif
1135#if ENABLE_FEATURE_FIND_MTIME
1136        else if (parm == PARM_mtime) {
1137            action_mtime *ap;
1138            dbg("%d", __LINE__);
1139            ap = ALLOC_ACTION(mtime);
1140            ap->mtime_char = arg1[0];
1141            ap->mtime_days = xatoul(plus_minus_num(arg1));
1142        }
1143#endif
1144#if ENABLE_FEATURE_FIND_MMIN
1145        else if (parm == PARM_mmin) {
1146            action_mmin *ap;
1147            dbg("%d", __LINE__);
1148            ap = ALLOC_ACTION(mmin);
1149            ap->mmin_char = arg1[0];
1150            ap->mmin_mins = xatoul(plus_minus_num(arg1));
1151        }
1152#endif
1153#if ENABLE_FEATURE_FIND_NEWER
1154        else if (parm == PARM_newer) {
1155            struct stat stat_newer;
1156            action_newer *ap;
1157            dbg("%d", __LINE__);
1158            ap = ALLOC_ACTION(newer);
1159            xstat(arg1, &stat_newer);
1160            ap->newer_mtime = stat_newer.st_mtime;
1161        }
1162#endif
1163#if ENABLE_FEATURE_FIND_INUM
1164        else if (parm == PARM_inum) {
1165            action_inum *ap;
1166            dbg("%d", __LINE__);
1167            ap = ALLOC_ACTION(inum);
1168            ap->inode_num = xatoul(arg1);
1169        }
1170#endif
1171#if ENABLE_FEATURE_FIND_USER
1172        else if (parm == PARM_user) {
1173            action_user *ap;
1174            dbg("%d", __LINE__);
1175            ap = ALLOC_ACTION(user);
1176            ap->uid = bb_strtou(arg1, NULL, 10);
1177            if (errno)
1178                ap->uid = xuname2uid(arg1);
1179        }
1180#endif
1181#if ENABLE_FEATURE_FIND_GROUP
1182        else if (parm == PARM_group) {
1183            action_group *ap;
1184            dbg("%d", __LINE__);
1185            ap = ALLOC_ACTION(group);
1186            ap->gid = bb_strtou(arg1, NULL, 10);
1187            if (errno)
1188                ap->gid = xgroup2gid(arg1);
1189        }
1190#endif
1191#if ENABLE_FEATURE_FIND_SIZE
1192        else if (parm == PARM_size) {
1193/* -size n[bckw]: file uses n units of space
1194 * b (default): units are 512-byte blocks
1195 * c: 1 byte
1196 * k: kilobytes
1197 * w: 2-byte words
1198 */
1199#if ENABLE_LFS
1200#define XATOU_SFX xatoull_sfx
1201#else
1202#define XATOU_SFX xatoul_sfx
1203#endif
1204            static const struct suffix_mult find_suffixes[] = {
1205                { "c", 1 },
1206                { "w", 2 },
1207                { "", 512 },
1208                { "b", 512 },
1209                { "k", 1024 },
1210                { "", 0 }
1211            };
1212            action_size *ap;
1213            dbg("%d", __LINE__);
1214            ap = ALLOC_ACTION(size);
1215            ap->size_char = arg1[0];
1216            ap->size = XATOU_SFX(plus_minus_num(arg1), find_suffixes);
1217        }
1218#endif
1219#if ENABLE_FEATURE_FIND_CONTEXT
1220        else if (parm == PARM_context) {
1221            action_context *ap;
1222            dbg("%d", __LINE__);
1223            ap = ALLOC_ACTION(context);
1224            /*ap->context = NULL; - ALLOC_ACTION did it */
1225            /* SELinux headers erroneously declare non-const parameter */
1226            if (selinux_raw_to_trans_context((char*)arg1, &ap->context))
1227                bb_simple_perror_msg(arg1);
1228        }
1229#endif
1230#if ENABLE_FEATURE_FIND_LINKS
1231        else if (parm == PARM_links) {
1232            action_links *ap;
1233            dbg("%d", __LINE__);
1234            ap = ALLOC_ACTION(links);
1235            ap->links_char = arg1[0];
1236            ap->links_count = xatoul(plus_minus_num(arg1));
1237        }
1238#endif
1239        else {
1240            bb_error_msg("unrecognized: %s", arg);
1241            bb_show_usage();
1242        }
1243        argv++;
1244    }
1245    dbg("exiting %s", __func__);
1246    return appp;
1247#undef ALLOC_ACTION
1248}
1249
1250int find_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
1251int find_main(int argc UNUSED_PARAM, char **argv)
1252{
1253    int i, firstopt, status = EXIT_SUCCESS;
1254
1255    INIT_G();
1256
1257    argv++;
1258    for (firstopt = 0; argv[firstopt]; firstopt++) {
1259        if (argv[firstopt][0] == '-')
1260            break;
1261        if (ENABLE_FEATURE_FIND_NOT && LONE_CHAR(argv[firstopt], '!'))
1262            break;
1263        if (ENABLE_FEATURE_FIND_PAREN && LONE_CHAR(argv[firstopt], '('))
1264            break;
1265    }
1266    if (firstopt == 0) {
1267        *--argv = (char*)".";
1268        firstopt++;
1269    }
1270
1271    G.actions = parse_params(&argv[firstopt]);
1272    argv[firstopt] = NULL;
1273
1274#if ENABLE_FEATURE_FIND_XDEV
1275    if (G.xdev_on) {
1276        struct stat stbuf;
1277
1278        G.xdev_count = firstopt;
1279        G.xdev_dev = xzalloc(G.xdev_count * sizeof(G.xdev_dev[0]));
1280        for (i = 0; argv[i]; i++) {
1281            /* not xstat(): shouldn't bomb out on
1282             * "find not_exist exist -xdev" */
1283            if (stat(argv[i], &stbuf) == 0)
1284                G.xdev_dev[i] = stbuf.st_dev;
1285            /* else G.xdev_dev[i] stays 0 and
1286             * won't match any real device dev_t
1287             */
1288        }
1289    }
1290#endif
1291
1292    for (i = 0; argv[i]; i++) {
1293        if (!recursive_action(argv[i],
1294                G.recurse_flags,/* flags */
1295                fileAction,     /* file action */
1296                fileAction,     /* dir action */
1297                NULL,           /* user data */
1298                0)              /* depth */
1299        ) {
1300            status = EXIT_FAILURE;
1301        }
1302    }
1303
1304    return status;
1305}
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