Annotation of /tags/mkinitrd-6_3_1/busybox/findutils/find.c
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Wed Aug 18 21:56:57 2010 UTC (14 years, 1 month ago) by niro
Original Path: trunk/mkinitrd-magellan/busybox/findutils/find.c
File MIME type: text/plain
File size: 35712 byte(s)
Wed Aug 18 21:56:57 2010 UTC (14 years, 1 month ago) by niro
Original Path: trunk/mkinitrd-magellan/busybox/findutils/find.c
File MIME type: text/plain
File size: 35712 byte(s)
-updated to busybox-1.17.1
1 | niro | 532 | /* 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 the GPL version 2, see the file LICENSE in this tarball. | ||
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 | niro | 816 | /* 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 | niro | 1123 | //applet:IF_FIND(APPLET_NOEXEC(find, find, _BB_DIR_USR_BIN, _BB_SUID_DROP, find)) |
57 | |||
58 | //kbuild:lib-$(CONFIG_FIND) += find.o | ||
59 | |||
60 | //config:config FIND | ||
61 | //config: bool "find" | ||
62 | //config: default y | ||
63 | //config: help | ||
64 | //config: find is used to search your system to find specified files. | ||
65 | //config: | ||
66 | //config:config FEATURE_FIND_PRINT0 | ||
67 | //config: bool "Enable -print0: NUL-terminated output" | ||
68 | //config: default y | ||
69 | //config: depends on FIND | ||
70 | //config: help | ||
71 | //config: Causes output names to be separated by a NUL character | ||
72 | //config: rather than a newline. This allows names that contain | ||
73 | //config: newlines and other whitespace to be more easily | ||
74 | //config: interpreted by other programs. | ||
75 | //config: | ||
76 | //config:config FEATURE_FIND_MTIME | ||
77 | //config: bool "Enable -mtime: modified time matching" | ||
78 | //config: default y | ||
79 | //config: depends on FIND | ||
80 | //config: help | ||
81 | //config: Allow searching based on the modification time of | ||
82 | //config: files, in days. | ||
83 | //config: | ||
84 | //config:config FEATURE_FIND_MMIN | ||
85 | //config: bool "Enable -mmin: modified time matching by minutes" | ||
86 | //config: default y | ||
87 | //config: depends on FIND | ||
88 | //config: help | ||
89 | //config: Allow searching based on the modification time of | ||
90 | //config: files, in minutes. | ||
91 | //config: | ||
92 | //config:config FEATURE_FIND_PERM | ||
93 | //config: bool "Enable -perm: permissions matching" | ||
94 | //config: default y | ||
95 | //config: depends on FIND | ||
96 | //config: help | ||
97 | //config: Enable searching based on file permissions. | ||
98 | //config: | ||
99 | //config:config FEATURE_FIND_TYPE | ||
100 | //config: bool "Enable -type: file type matching (file/dir/link/...)" | ||
101 | //config: default y | ||
102 | //config: depends on FIND | ||
103 | //config: help | ||
104 | //config: Enable searching based on file type (file, | ||
105 | //config: directory, socket, device, etc.). | ||
106 | //config: | ||
107 | //config:config FEATURE_FIND_XDEV | ||
108 | //config: bool "Enable -xdev: 'stay in filesystem'" | ||
109 | //config: default y | ||
110 | //config: depends on FIND | ||
111 | //config: help | ||
112 | //config: This option allows find to restrict searches to a single filesystem. | ||
113 | //config: | ||
114 | //config:config FEATURE_FIND_MAXDEPTH | ||
115 | //config: bool "Enable -maxdepth N" | ||
116 | //config: default y | ||
117 | //config: depends on FIND | ||
118 | //config: help | ||
119 | //config: This option enables -maxdepth N option. | ||
120 | //config: | ||
121 | //config:config FEATURE_FIND_NEWER | ||
122 | //config: bool "Enable -newer: compare file modification times" | ||
123 | //config: default y | ||
124 | //config: depends on FIND | ||
125 | //config: help | ||
126 | //config: Support the 'find -newer' option for finding any files which have | ||
127 | //config: a modified time that is more recent than the specified FILE. | ||
128 | //config: | ||
129 | //config:config FEATURE_FIND_INUM | ||
130 | //config: bool "Enable -inum: inode number matching" | ||
131 | //config: default y | ||
132 | //config: depends on FIND | ||
133 | //config: help | ||
134 | //config: Support the 'find -inum' option for searching by inode number. | ||
135 | //config: | ||
136 | //config:config FEATURE_FIND_EXEC | ||
137 | //config: bool "Enable -exec: execute commands" | ||
138 | //config: default y | ||
139 | //config: depends on FIND | ||
140 | //config: help | ||
141 | //config: Support the 'find -exec' option for executing commands based upon | ||
142 | //config: the files matched. | ||
143 | //config: | ||
144 | //config:config FEATURE_FIND_USER | ||
145 | //config: bool "Enable -user: username/uid matching" | ||
146 | //config: default y | ||
147 | //config: depends on FIND | ||
148 | //config: help | ||
149 | //config: Support the 'find -user' option for searching by username or uid. | ||
150 | //config: | ||
151 | //config:config FEATURE_FIND_GROUP | ||
152 | //config: bool "Enable -group: group/gid matching" | ||
153 | //config: default y | ||
154 | //config: depends on FIND | ||
155 | //config: help | ||
156 | //config: Support the 'find -group' option for searching by group name or gid. | ||
157 | //config: | ||
158 | //config:config FEATURE_FIND_NOT | ||
159 | //config: bool "Enable the 'not' (!) operator" | ||
160 | //config: default y | ||
161 | //config: depends on FIND | ||
162 | //config: help | ||
163 | //config: Support the '!' operator to invert the test results. | ||
164 | //config: If 'Enable full-blown desktop' is enabled, then will also support | ||
165 | //config: the non-POSIX notation '-not'. | ||
166 | //config: | ||
167 | //config:config FEATURE_FIND_DEPTH | ||
168 | //config: bool "Enable -depth" | ||
169 | //config: default y | ||
170 | //config: depends on FIND | ||
171 | //config: help | ||
172 | //config: Process each directory's contents before the directory itself. | ||
173 | //config: | ||
174 | //config:config FEATURE_FIND_PAREN | ||
175 | //config: bool "Enable parens in options" | ||
176 | //config: default y | ||
177 | //config: depends on FIND | ||
178 | //config: help | ||
179 | //config: Enable usage of parens '(' to specify logical order of arguments. | ||
180 | //config: | ||
181 | //config:config FEATURE_FIND_SIZE | ||
182 | //config: bool "Enable -size: file size matching" | ||
183 | //config: default y | ||
184 | //config: depends on FIND | ||
185 | //config: help | ||
186 | //config: Support the 'find -size' option for searching by file size. | ||
187 | //config: | ||
188 | //config:config FEATURE_FIND_PRUNE | ||
189 | //config: bool "Enable -prune: exclude subdirectories" | ||
190 | //config: default y | ||
191 | //config: depends on FIND | ||
192 | //config: help | ||
193 | //config: If the file is a directory, dont descend into it. Useful for | ||
194 | //config: exclusion .svn and CVS directories. | ||
195 | //config: | ||
196 | //config:config FEATURE_FIND_DELETE | ||
197 | //config: bool "Enable -delete: delete files/dirs" | ||
198 | //config: default y | ||
199 | //config: depends on FIND && FEATURE_FIND_DEPTH | ||
200 | //config: help | ||
201 | //config: Support the 'find -delete' option for deleting files and directories. | ||
202 | //config: WARNING: This option can do much harm if used wrong. Busybox will not | ||
203 | //config: try to protect the user from doing stupid things. Use with care. | ||
204 | //config: | ||
205 | //config:config FEATURE_FIND_PATH | ||
206 | //config: bool "Enable -path: match pathname with shell pattern" | ||
207 | //config: default y | ||
208 | //config: depends on FIND | ||
209 | //config: help | ||
210 | //config: The -path option matches whole pathname instead of just filename. | ||
211 | //config: | ||
212 | //config:config FEATURE_FIND_REGEX | ||
213 | //config: bool "Enable -regex: match pathname with regex" | ||
214 | //config: default y | ||
215 | //config: depends on FIND | ||
216 | //config: help | ||
217 | //config: The -regex option matches whole pathname against regular expression. | ||
218 | //config: | ||
219 | //config:config FEATURE_FIND_CONTEXT | ||
220 | //config: bool "Enable -context: security context matching" | ||
221 | //config: default n | ||
222 | //config: depends on FIND && SELINUX | ||
223 | //config: help | ||
224 | //config: Support the 'find -context' option for matching security context. | ||
225 | //config: | ||
226 | //config:config FEATURE_FIND_LINKS | ||
227 | //config: bool "Enable -links: link count matching" | ||
228 | //config: default y | ||
229 | //config: depends on FIND | ||
230 | //config: help | ||
231 | //config: Support the 'find -links' option for matching number of links. | ||
232 | |||
233 | niro | 532 | #include <fnmatch.h> |
234 | niro | 816 | #include "libbb.h" |
235 | #if ENABLE_FEATURE_FIND_REGEX | ||
236 | #include "xregex.h" | ||
237 | #endif | ||
238 | niro | 532 | |
239 | niro | 816 | /* This is a NOEXEC applet. Be very careful! */ |
240 | |||
241 | |||
242 | niro | 984 | typedef int (*action_fp)(const char *fileName, const struct stat *statbuf, void *) FAST_FUNC; |
243 | niro | 532 | |
244 | typedef struct { | ||
245 | action_fp f; | ||
246 | niro | 816 | #if ENABLE_FEATURE_FIND_NOT |
247 | bool invert; | ||
248 | #endif | ||
249 | niro | 532 | } action; |
250 | |||
251 | niro | 984 | #define ACTS(name, ...) typedef struct { action a; __VA_ARGS__ } action_##name; |
252 | #define ACTF(name) \ | ||
253 | static int FAST_FUNC func_##name(const char *fileName UNUSED_PARAM, \ | ||
254 | const struct stat *statbuf UNUSED_PARAM, \ | ||
255 | action_##name* ap UNUSED_PARAM) | ||
256 | niro | 532 | |
257 | niro | 984 | ACTS(print) |
258 | ACTS(name, const char *pattern; bool iname;) | ||
259 | IF_FEATURE_FIND_PATH( ACTS(path, const char *pattern;)) | ||
260 | IF_FEATURE_FIND_REGEX( ACTS(regex, regex_t compiled_pattern;)) | ||
261 | IF_FEATURE_FIND_PRINT0( ACTS(print0)) | ||
262 | IF_FEATURE_FIND_TYPE( ACTS(type, int type_mask;)) | ||
263 | IF_FEATURE_FIND_PERM( ACTS(perm, char perm_char; mode_t perm_mask;)) | ||
264 | IF_FEATURE_FIND_MTIME( ACTS(mtime, char mtime_char; unsigned mtime_days;)) | ||
265 | IF_FEATURE_FIND_MMIN( ACTS(mmin, char mmin_char; unsigned mmin_mins;)) | ||
266 | IF_FEATURE_FIND_NEWER( ACTS(newer, time_t newer_mtime;)) | ||
267 | IF_FEATURE_FIND_INUM( ACTS(inum, ino_t inode_num;)) | ||
268 | IF_FEATURE_FIND_USER( ACTS(user, uid_t uid;)) | ||
269 | IF_FEATURE_FIND_SIZE( ACTS(size, char size_char; off_t size;)) | ||
270 | IF_FEATURE_FIND_CONTEXT(ACTS(context, security_context_t context;)) | ||
271 | IF_FEATURE_FIND_PAREN( ACTS(paren, action ***subexpr;)) | ||
272 | IF_FEATURE_FIND_PRUNE( ACTS(prune)) | ||
273 | IF_FEATURE_FIND_DELETE( ACTS(delete)) | ||
274 | IF_FEATURE_FIND_EXEC( ACTS(exec, char **exec_argv; unsigned *subst_count; int exec_argc;)) | ||
275 | IF_FEATURE_FIND_GROUP( ACTS(group, gid_t gid;)) | ||
276 | IF_FEATURE_FIND_LINKS( ACTS(links, char links_char; int links_count;)) | ||
277 | |||
278 | struct globals { | ||
279 | IF_FEATURE_FIND_XDEV(dev_t *xdev_dev;) | ||
280 | IF_FEATURE_FIND_XDEV(int xdev_count;) | ||
281 | action ***actions; | ||
282 | bool need_print; | ||
283 | recurse_flags_t recurse_flags; | ||
284 | niro | 1123 | } FIX_ALIASING; |
285 | niro | 984 | #define G (*(struct globals*)&bb_common_bufsiz1) |
286 | #define INIT_G() do { \ | ||
287 | struct G_sizecheck { \ | ||
288 | char G_sizecheck[sizeof(G) > COMMON_BUFSIZE ? -1 : 1]; \ | ||
289 | }; \ | ||
290 | /* we have to zero it out because of NOEXEC */ \ | ||
291 | memset(&G, 0, offsetof(struct globals, need_print)); \ | ||
292 | G.need_print = 1; \ | ||
293 | G.recurse_flags = ACTION_RECURSE; \ | ||
294 | } while (0) | ||
295 | |||
296 | niro | 532 | #if ENABLE_FEATURE_FIND_EXEC |
297 | niro | 816 | static unsigned count_subst(const char *str) |
298 | niro | 532 | { |
299 | niro | 816 | unsigned count = 0; |
300 | while ((str = strstr(str, "{}")) != NULL) { | ||
301 | niro | 532 | count++; |
302 | str++; | ||
303 | } | ||
304 | return count; | ||
305 | } | ||
306 | |||
307 | |||
308 | niro | 816 | static char* subst(const char *src, unsigned count, const char* filename) |
309 | niro | 532 | { |
310 | char *buf, *dst, *end; | ||
311 | niro | 816 | size_t flen = strlen(filename); |
312 | niro | 532 | /* we replace each '{}' with filename: growth by strlen-2 */ |
313 | buf = dst = xmalloc(strlen(src) + count*(flen-2) + 1); | ||
314 | while ((end = strstr(src, "{}"))) { | ||
315 | memcpy(dst, src, end - src); | ||
316 | dst += end - src; | ||
317 | src = end + 2; | ||
318 | memcpy(dst, filename, flen); | ||
319 | dst += flen; | ||
320 | } | ||
321 | strcpy(dst, src); | ||
322 | return buf; | ||
323 | } | ||
324 | #endif | ||
325 | |||
326 | niro | 816 | /* Return values of ACTFs ('action functions') are a bit mask: |
327 | * bit 1=1: prune (use SKIP constant for setting it) | ||
328 | * bit 0=1: matched successfully (TRUE) | ||
329 | */ | ||
330 | niro | 532 | |
331 | niro | 984 | static int exec_actions(action ***appp, const char *fileName, const struct stat *statbuf) |
332 | niro | 532 | { |
333 | int cur_group; | ||
334 | int cur_action; | ||
335 | niro | 816 | int rc = 0; |
336 | niro | 532 | action **app, *ap; |
337 | |||
338 | niro | 816 | /* "action group" is a set of actions ANDed together. |
339 | * groups are ORed together. | ||
340 | * We simply evaluate each group until we find one in which all actions | ||
341 | * succeed. */ | ||
342 | |||
343 | /* -prune is special: if it is encountered, then we won't | ||
344 | * descend into current directory. It doesn't matter whether | ||
345 | * action group (in which -prune sits) will succeed or not: | ||
346 | * find * -prune -name 'f*' -o -name 'm*' -- prunes every dir | ||
347 | * find * -name 'f*' -o -prune -name 'm*' -- prunes all dirs | ||
348 | * not starting with 'f' */ | ||
349 | |||
350 | /* We invert TRUE bit (bit 0). Now 1 there means 'failure'. | ||
351 | * and bitwise OR in "rc |= TRUE ^ ap->f()" will: | ||
352 | * (1) make SKIP (-prune) bit stick; and (2) detect 'failure'. | ||
353 | * On return, bit is restored. */ | ||
354 | |||
355 | niro | 532 | cur_group = -1; |
356 | niro | 984 | while ((app = appp[++cur_group]) != NULL) { |
357 | niro | 816 | rc &= ~TRUE; /* 'success' so far, clear TRUE bit */ |
358 | niro | 532 | cur_action = -1; |
359 | niro | 816 | while (1) { |
360 | niro | 532 | ap = app[++cur_action]; |
361 | niro | 816 | if (!ap) /* all actions in group were successful */ |
362 | return rc ^ TRUE; /* restore TRUE bit */ | ||
363 | rc |= TRUE ^ ap->f(fileName, statbuf, ap); | ||
364 | #if ENABLE_FEATURE_FIND_NOT | ||
365 | if (ap->invert) rc ^= TRUE; | ||
366 | #endif | ||
367 | if (rc & TRUE) /* current group failed, try next */ | ||
368 | break; | ||
369 | niro | 532 | } |
370 | } | ||
371 | niro | 816 | return rc ^ TRUE; /* restore TRUE bit */ |
372 | niro | 532 | } |
373 | |||
374 | |||
375 | ACTF(name) | ||
376 | { | ||
377 | niro | 816 | const char *tmp = bb_basename(fileName); |
378 | niro | 1123 | if (tmp != fileName && *tmp == '\0') { |
379 | /* "foo/bar/". Oh no... go back to 'b' */ | ||
380 | niro | 816 | tmp--; |
381 | while (tmp != fileName && *--tmp != '/') | ||
382 | continue; | ||
383 | if (*tmp == '/') | ||
384 | tmp++; | ||
385 | } | ||
386 | niro | 1123 | /* Was using FNM_PERIOD flag too, |
387 | * but somewhere between 4.1.20 and 4.4.0 GNU find stopped using it. | ||
388 | * find -name '*foo' should match .foo too: | ||
389 | */ | ||
390 | return fnmatch(ap->pattern, tmp, (ap->iname ? FNM_CASEFOLD : 0)) == 0; | ||
391 | niro | 532 | } |
392 | niro | 816 | |
393 | #if ENABLE_FEATURE_FIND_PATH | ||
394 | ACTF(path) | ||
395 | { | ||
396 | return fnmatch(ap->pattern, fileName, 0) == 0; | ||
397 | } | ||
398 | #endif | ||
399 | #if ENABLE_FEATURE_FIND_REGEX | ||
400 | ACTF(regex) | ||
401 | { | ||
402 | regmatch_t match; | ||
403 | if (regexec(&ap->compiled_pattern, fileName, 1, &match, 0 /*eflags*/)) | ||
404 | return 0; /* no match */ | ||
405 | if (match.rm_so) | ||
406 | return 0; /* match doesn't start at pos 0 */ | ||
407 | if (fileName[match.rm_eo]) | ||
408 | return 0; /* match doesn't end exactly at end of pathname */ | ||
409 | return 1; | ||
410 | } | ||
411 | #endif | ||
412 | niro | 532 | #if ENABLE_FEATURE_FIND_TYPE |
413 | ACTF(type) | ||
414 | { | ||
415 | return ((statbuf->st_mode & S_IFMT) == ap->type_mask); | ||
416 | } | ||
417 | #endif | ||
418 | #if ENABLE_FEATURE_FIND_PERM | ||
419 | ACTF(perm) | ||
420 | { | ||
421 | niro | 816 | /* -perm +mode: at least one of perm_mask bits are set */ |
422 | if (ap->perm_char == '+') | ||
423 | return (statbuf->st_mode & ap->perm_mask) != 0; | ||
424 | /* -perm -mode: all of perm_mask are set */ | ||
425 | if (ap->perm_char == '-') | ||
426 | return (statbuf->st_mode & ap->perm_mask) == ap->perm_mask; | ||
427 | /* -perm mode: file mode must match perm_mask */ | ||
428 | return (statbuf->st_mode & 07777) == ap->perm_mask; | ||
429 | niro | 532 | } |
430 | #endif | ||
431 | #if ENABLE_FEATURE_FIND_MTIME | ||
432 | ACTF(mtime) | ||
433 | { | ||
434 | time_t file_age = time(NULL) - statbuf->st_mtime; | ||
435 | niro | 816 | time_t mtime_secs = ap->mtime_days * 24*60*60; |
436 | if (ap->mtime_char == '+') | ||
437 | return file_age >= mtime_secs + 24*60*60; | ||
438 | if (ap->mtime_char == '-') | ||
439 | return file_age < mtime_secs; | ||
440 | /* just numeric mtime */ | ||
441 | return file_age >= mtime_secs && file_age < (mtime_secs + 24*60*60); | ||
442 | niro | 532 | } |
443 | #endif | ||
444 | #if ENABLE_FEATURE_FIND_MMIN | ||
445 | ACTF(mmin) | ||
446 | { | ||
447 | time_t file_age = time(NULL) - statbuf->st_mtime; | ||
448 | time_t mmin_secs = ap->mmin_mins * 60; | ||
449 | niro | 816 | if (ap->mmin_char == '+') |
450 | return file_age >= mmin_secs + 60; | ||
451 | if (ap->mmin_char == '-') | ||
452 | return file_age < mmin_secs; | ||
453 | /* just numeric mmin */ | ||
454 | return file_age >= mmin_secs && file_age < (mmin_secs + 60); | ||
455 | niro | 532 | } |
456 | #endif | ||
457 | #if ENABLE_FEATURE_FIND_NEWER | ||
458 | ACTF(newer) | ||
459 | { | ||
460 | niro | 816 | return (ap->newer_mtime < statbuf->st_mtime); |
461 | niro | 532 | } |
462 | #endif | ||
463 | #if ENABLE_FEATURE_FIND_INUM | ||
464 | ACTF(inum) | ||
465 | { | ||
466 | niro | 816 | return (statbuf->st_ino == ap->inode_num); |
467 | niro | 532 | } |
468 | #endif | ||
469 | #if ENABLE_FEATURE_FIND_EXEC | ||
470 | ACTF(exec) | ||
471 | { | ||
472 | int i, rc; | ||
473 | niro | 984 | #if ENABLE_USE_PORTABLE_CODE |
474 | char **argv = alloca(sizeof(char*) * (ap->exec_argc + 1)); | ||
475 | #else /* gcc 4.3.1 generates smaller code: */ | ||
476 | niro | 816 | char *argv[ap->exec_argc + 1]; |
477 | niro | 984 | #endif |
478 | niro | 532 | for (i = 0; i < ap->exec_argc; i++) |
479 | argv[i] = subst(ap->exec_argv[i], ap->subst_count[i], fileName); | ||
480 | argv[i] = NULL; /* terminate the list */ | ||
481 | niro | 816 | |
482 | rc = spawn_and_wait(argv); | ||
483 | if (rc < 0) | ||
484 | bb_simple_perror_msg(argv[0]); | ||
485 | |||
486 | i = 0; | ||
487 | while (argv[i]) | ||
488 | free(argv[i++]); | ||
489 | return rc == 0; /* return 1 if exitcode 0 */ | ||
490 | niro | 532 | } |
491 | #endif | ||
492 | niro | 816 | #if ENABLE_FEATURE_FIND_USER |
493 | ACTF(user) | ||
494 | { | ||
495 | return (statbuf->st_uid == ap->uid); | ||
496 | } | ||
497 | #endif | ||
498 | #if ENABLE_FEATURE_FIND_GROUP | ||
499 | ACTF(group) | ||
500 | { | ||
501 | return (statbuf->st_gid == ap->gid); | ||
502 | } | ||
503 | #endif | ||
504 | niro | 532 | #if ENABLE_FEATURE_FIND_PRINT0 |
505 | ACTF(print0) | ||
506 | { | ||
507 | printf("%s%c", fileName, '\0'); | ||
508 | return TRUE; | ||
509 | } | ||
510 | #endif | ||
511 | ACTF(print) | ||
512 | { | ||
513 | puts(fileName); | ||
514 | return TRUE; | ||
515 | } | ||
516 | niro | 816 | #if ENABLE_FEATURE_FIND_PAREN |
517 | niro | 532 | ACTF(paren) |
518 | { | ||
519 | return exec_actions(ap->subexpr, fileName, statbuf); | ||
520 | } | ||
521 | niro | 816 | #endif |
522 | #if ENABLE_FEATURE_FIND_SIZE | ||
523 | ACTF(size) | ||
524 | { | ||
525 | if (ap->size_char == '+') | ||
526 | return statbuf->st_size > ap->size; | ||
527 | if (ap->size_char == '-') | ||
528 | return statbuf->st_size < ap->size; | ||
529 | return statbuf->st_size == ap->size; | ||
530 | } | ||
531 | #endif | ||
532 | #if ENABLE_FEATURE_FIND_PRUNE | ||
533 | niro | 532 | /* |
534 | * -prune: if -depth is not given, return true and do not descend | ||
535 | * current dir; if -depth is given, return false with no effect. | ||
536 | * Example: | ||
537 | * find dir -name 'asm-*' -prune -o -name '*.[chS]' -print | ||
538 | */ | ||
539 | ACTF(prune) | ||
540 | { | ||
541 | niro | 816 | return SKIP + TRUE; |
542 | niro | 532 | } |
543 | niro | 816 | #endif |
544 | #if ENABLE_FEATURE_FIND_DELETE | ||
545 | ACTF(delete) | ||
546 | niro | 532 | { |
547 | niro | 816 | int rc; |
548 | if (S_ISDIR(statbuf->st_mode)) { | ||
549 | rc = rmdir(fileName); | ||
550 | } else { | ||
551 | rc = unlink(fileName); | ||
552 | } | ||
553 | if (rc < 0) | ||
554 | bb_simple_perror_msg(fileName); | ||
555 | return TRUE; | ||
556 | niro | 532 | } |
557 | #endif | ||
558 | niro | 816 | #if ENABLE_FEATURE_FIND_CONTEXT |
559 | ACTF(context) | ||
560 | { | ||
561 | security_context_t con; | ||
562 | int rc; | ||
563 | niro | 532 | |
564 | niro | 984 | if (G.recurse_flags & ACTION_FOLLOWLINKS) { |
565 | niro | 816 | rc = getfilecon(fileName, &con); |
566 | } else { | ||
567 | rc = lgetfilecon(fileName, &con); | ||
568 | } | ||
569 | if (rc < 0) | ||
570 | return FALSE; | ||
571 | rc = strcmp(ap->context, con); | ||
572 | freecon(con); | ||
573 | return rc == 0; | ||
574 | } | ||
575 | #endif | ||
576 | niro | 984 | #if ENABLE_FEATURE_FIND_LINKS |
577 | ACTF(links) | ||
578 | { | ||
579 | switch(ap->links_char) { | ||
580 | case '-' : return (statbuf->st_nlink < ap->links_count); | ||
581 | case '+' : return (statbuf->st_nlink > ap->links_count); | ||
582 | default: return (statbuf->st_nlink == ap->links_count); | ||
583 | } | ||
584 | } | ||
585 | #endif | ||
586 | niro | 532 | |
587 | niro | 816 | static int FAST_FUNC fileAction(const char *fileName, |
588 | struct stat *statbuf, | ||
589 | niro | 984 | void *userData IF_NOT_FEATURE_FIND_MAXDEPTH(UNUSED_PARAM), |
590 | int depth IF_NOT_FEATURE_FIND_MAXDEPTH(UNUSED_PARAM)) | ||
591 | niro | 532 | { |
592 | niro | 984 | int r; |
593 | niro | 816 | #if ENABLE_FEATURE_FIND_MAXDEPTH |
594 | niro | 984 | #define minmaxdepth ((int*)userData) |
595 | niro | 816 | |
596 | niro | 984 | if (depth < minmaxdepth[0]) |
597 | return TRUE; /* skip this, continue recursing */ | ||
598 | if (depth > minmaxdepth[1]) | ||
599 | return SKIP; /* stop recursing */ | ||
600 | niro | 816 | #endif |
601 | |||
602 | niro | 984 | r = exec_actions(G.actions, fileName, statbuf); |
603 | /* Had no explicit -print[0] or -exec? then print */ | ||
604 | if ((r & TRUE) && G.need_print) | ||
605 | puts(fileName); | ||
606 | |||
607 | #if ENABLE_FEATURE_FIND_MAXDEPTH | ||
608 | if (S_ISDIR(statbuf->st_mode)) { | ||
609 | if (depth == minmaxdepth[1]) | ||
610 | return SKIP; | ||
611 | } | ||
612 | #endif | ||
613 | niro | 816 | #if ENABLE_FEATURE_FIND_XDEV |
614 | niro | 984 | /* -xdev stops on mountpoints, but AFTER mountpoit itself |
615 | * is processed as usual */ | ||
616 | if (S_ISDIR(statbuf->st_mode)) { | ||
617 | if (G.xdev_count) { | ||
618 | int i; | ||
619 | for (i = 0; i < G.xdev_count; i++) { | ||
620 | if (G.xdev_dev[i] == statbuf->st_dev) | ||
621 | goto found; | ||
622 | } | ||
623 | return SKIP; | ||
624 | found: ; | ||
625 | niro | 532 | } |
626 | } | ||
627 | #endif | ||
628 | niro | 984 | |
629 | niro | 532 | /* Cannot return 0: our caller, recursive_action(), |
630 | * will perror() and skip dirs (if called on dir) */ | ||
631 | niro | 984 | return (r & SKIP) ? SKIP : TRUE; |
632 | #undef minmaxdepth | ||
633 | niro | 532 | } |
634 | |||
635 | |||
636 | #if ENABLE_FEATURE_FIND_TYPE | ||
637 | niro | 816 | static int find_type(const char *type) |
638 | niro | 532 | { |
639 | int mask = 0; | ||
640 | |||
641 | niro | 816 | if (*type == 'b') |
642 | niro | 532 | mask = S_IFBLK; |
643 | niro | 816 | else if (*type == 'c') |
644 | niro | 532 | mask = S_IFCHR; |
645 | niro | 816 | else if (*type == 'd') |
646 | niro | 532 | mask = S_IFDIR; |
647 | niro | 816 | else if (*type == 'p') |
648 | niro | 532 | mask = S_IFIFO; |
649 | niro | 816 | else if (*type == 'f') |
650 | niro | 532 | mask = S_IFREG; |
651 | niro | 816 | else if (*type == 'l') |
652 | niro | 532 | mask = S_IFLNK; |
653 | niro | 816 | else if (*type == 's') |
654 | niro | 532 | mask = S_IFSOCK; |
655 | |||
656 | niro | 984 | if (mask == 0 || type[1] != '\0') |
657 | niro | 532 | bb_error_msg_and_die(bb_msg_invalid_arg, type, "-type"); |
658 | |||
659 | return mask; | ||
660 | } | ||
661 | #endif | ||
662 | |||
663 | niro | 816 | #if ENABLE_FEATURE_FIND_PERM \ |
664 | || ENABLE_FEATURE_FIND_MTIME || ENABLE_FEATURE_FIND_MMIN \ | ||
665 | niro | 984 | || ENABLE_FEATURE_FIND_SIZE || ENABLE_FEATURE_FIND_LINKS |
666 | niro | 816 | static const char* plus_minus_num(const char* str) |
667 | niro | 532 | { |
668 | niro | 816 | if (*str == '-' || *str == '+') |
669 | str++; | ||
670 | return str; | ||
671 | } | ||
672 | #endif | ||
673 | |||
674 | static action*** parse_params(char **argv) | ||
675 | { | ||
676 | enum { | ||
677 | niro | 984 | PARM_a , |
678 | PARM_o , | ||
679 | IF_FEATURE_FIND_NOT( PARM_char_not ,) | ||
680 | niro | 816 | #if ENABLE_DESKTOP |
681 | niro | 984 | PARM_and , |
682 | PARM_or , | ||
683 | IF_FEATURE_FIND_NOT( PARM_not ,) | ||
684 | niro | 816 | #endif |
685 | niro | 984 | PARM_print , |
686 | IF_FEATURE_FIND_PRINT0( PARM_print0 ,) | ||
687 | IF_FEATURE_FIND_DEPTH( PARM_depth ,) | ||
688 | IF_FEATURE_FIND_PRUNE( PARM_prune ,) | ||
689 | IF_FEATURE_FIND_DELETE( PARM_delete ,) | ||
690 | IF_FEATURE_FIND_EXEC( PARM_exec ,) | ||
691 | IF_FEATURE_FIND_PAREN( PARM_char_brace,) | ||
692 | niro | 816 | /* All options starting from here require argument */ |
693 | niro | 984 | PARM_name , |
694 | PARM_iname , | ||
695 | IF_FEATURE_FIND_PATH( PARM_path ,) | ||
696 | IF_FEATURE_FIND_REGEX( PARM_regex ,) | ||
697 | IF_FEATURE_FIND_TYPE( PARM_type ,) | ||
698 | IF_FEATURE_FIND_PERM( PARM_perm ,) | ||
699 | IF_FEATURE_FIND_MTIME( PARM_mtime ,) | ||
700 | IF_FEATURE_FIND_MMIN( PARM_mmin ,) | ||
701 | IF_FEATURE_FIND_NEWER( PARM_newer ,) | ||
702 | IF_FEATURE_FIND_INUM( PARM_inum ,) | ||
703 | IF_FEATURE_FIND_USER( PARM_user ,) | ||
704 | IF_FEATURE_FIND_GROUP( PARM_group ,) | ||
705 | IF_FEATURE_FIND_SIZE( PARM_size ,) | ||
706 | IF_FEATURE_FIND_CONTEXT(PARM_context ,) | ||
707 | IF_FEATURE_FIND_LINKS( PARM_links ,) | ||
708 | niro | 816 | }; |
709 | |||
710 | static const char params[] ALIGN1 = | ||
711 | "-a\0" | ||
712 | "-o\0" | ||
713 | niro | 984 | IF_FEATURE_FIND_NOT( "!\0" ) |
714 | niro | 816 | #if ENABLE_DESKTOP |
715 | "-and\0" | ||
716 | "-or\0" | ||
717 | niro | 984 | IF_FEATURE_FIND_NOT( "-not\0" ) |
718 | niro | 816 | #endif |
719 | "-print\0" | ||
720 | niro | 984 | IF_FEATURE_FIND_PRINT0( "-print0\0" ) |
721 | IF_FEATURE_FIND_DEPTH( "-depth\0" ) | ||
722 | IF_FEATURE_FIND_PRUNE( "-prune\0" ) | ||
723 | IF_FEATURE_FIND_DELETE( "-delete\0" ) | ||
724 | IF_FEATURE_FIND_EXEC( "-exec\0" ) | ||
725 | IF_FEATURE_FIND_PAREN( "(\0" ) | ||
726 | niro | 816 | /* All options starting from here require argument */ |
727 | "-name\0" | ||
728 | "-iname\0" | ||
729 | niro | 984 | IF_FEATURE_FIND_PATH( "-path\0" ) |
730 | IF_FEATURE_FIND_REGEX( "-regex\0" ) | ||
731 | IF_FEATURE_FIND_TYPE( "-type\0" ) | ||
732 | IF_FEATURE_FIND_PERM( "-perm\0" ) | ||
733 | IF_FEATURE_FIND_MTIME( "-mtime\0" ) | ||
734 | IF_FEATURE_FIND_MMIN( "-mmin\0" ) | ||
735 | IF_FEATURE_FIND_NEWER( "-newer\0" ) | ||
736 | IF_FEATURE_FIND_INUM( "-inum\0" ) | ||
737 | IF_FEATURE_FIND_USER( "-user\0" ) | ||
738 | IF_FEATURE_FIND_GROUP( "-group\0" ) | ||
739 | IF_FEATURE_FIND_SIZE( "-size\0" ) | ||
740 | IF_FEATURE_FIND_CONTEXT("-context\0") | ||
741 | IF_FEATURE_FIND_LINKS( "-links\0" ) | ||
742 | niro | 816 | ; |
743 | |||
744 | niro | 532 | action*** appp; |
745 | niro | 816 | unsigned cur_group = 0; |
746 | unsigned cur_action = 0; | ||
747 | niro | 984 | IF_FEATURE_FIND_NOT( bool invert_flag = 0; ) |
748 | niro | 532 | |
749 | niro | 816 | /* This is the only place in busybox where we use nested function. |
750 | * So far more standard alternatives were bigger. */ | ||
751 | /* Suppress a warning "func without a prototype" */ | ||
752 | auto action* alloc_action(int sizeof_struct, action_fp f); | ||
753 | niro | 532 | action* alloc_action(int sizeof_struct, action_fp f) |
754 | { | ||
755 | action *ap; | ||
756 | appp[cur_group] = xrealloc(appp[cur_group], (cur_action+2) * sizeof(*appp)); | ||
757 | appp[cur_group][cur_action++] = ap = xmalloc(sizeof_struct); | ||
758 | appp[cur_group][cur_action] = NULL; | ||
759 | ap->f = f; | ||
760 | niro | 984 | IF_FEATURE_FIND_NOT( ap->invert = invert_flag; ) |
761 | IF_FEATURE_FIND_NOT( invert_flag = 0; ) | ||
762 | niro | 532 | return ap; |
763 | } | ||
764 | niro | 816 | |
765 | niro | 532 | #define ALLOC_ACTION(name) (action_##name*)alloc_action(sizeof(action_##name), (action_fp) func_##name) |
766 | |||
767 | niro | 816 | appp = xzalloc(2 * sizeof(appp[0])); /* appp[0],[1] == NULL */ |
768 | niro | 532 | |
769 | niro | 816 | /* Actions have side effects and return a true or false value |
770 | * We implement: -print, -print0, -exec | ||
771 | * | ||
772 | * The rest are tests. | ||
773 | * | ||
774 | * Tests and actions are grouped by operators | ||
775 | * ( expr ) Force precedence | ||
776 | * ! expr True if expr is false | ||
777 | * -not expr Same as ! expr | ||
778 | * expr1 [-a[nd]] expr2 And; expr2 is not evaluated if expr1 is false | ||
779 | * expr1 -o[r] expr2 Or; expr2 is not evaluated if expr1 is true | ||
780 | * expr1 , expr2 List; both expr1 and expr2 are always evaluated | ||
781 | * We implement: (), -a, -o | ||
782 | */ | ||
783 | while (*argv) { | ||
784 | const char *arg = argv[0]; | ||
785 | int parm = index_in_strings(params, arg); | ||
786 | const char *arg1 = argv[1]; | ||
787 | niro | 532 | |
788 | niro | 816 | if (parm >= PARM_name) { |
789 | /* All options starting from -name require argument */ | ||
790 | if (!arg1) | ||
791 | bb_error_msg_and_die(bb_msg_requires_arg, arg); | ||
792 | argv++; | ||
793 | } | ||
794 | niro | 532 | |
795 | niro | 816 | /* We can use big switch() here, but on i386 |
796 | * it doesn't give smaller code. Other arches? */ | ||
797 | niro | 532 | |
798 | /* --- Operators --- */ | ||
799 | niro | 984 | if (parm == PARM_a IF_DESKTOP(|| parm == PARM_and)) { |
800 | niro | 816 | /* no further special handling required */ |
801 | niro | 532 | } |
802 | niro | 984 | else if (parm == PARM_o IF_DESKTOP(|| parm == PARM_or)) { |
803 | niro | 532 | /* start new OR group */ |
804 | cur_group++; | ||
805 | appp = xrealloc(appp, (cur_group+2) * sizeof(*appp)); | ||
806 | niro | 816 | /*appp[cur_group] = NULL; - already NULL */ |
807 | niro | 532 | appp[cur_group+1] = NULL; |
808 | cur_action = 0; | ||
809 | } | ||
810 | niro | 816 | #if ENABLE_FEATURE_FIND_NOT |
811 | niro | 984 | else if (parm == PARM_char_not IF_DESKTOP(|| parm == PARM_not)) { |
812 | niro | 816 | /* also handles "find ! ! -name 'foo*'" */ |
813 | invert_flag ^= 1; | ||
814 | } | ||
815 | #endif | ||
816 | niro | 532 | |
817 | /* --- Tests and actions --- */ | ||
818 | niro | 816 | else if (parm == PARM_print) { |
819 | niro | 984 | G.need_print = 0; |
820 | niro | 816 | /* GNU find ignores '!' here: "find ! -print" */ |
821 | niro | 984 | IF_FEATURE_FIND_NOT( invert_flag = 0; ) |
822 | niro | 532 | (void) ALLOC_ACTION(print); |
823 | } | ||
824 | #if ENABLE_FEATURE_FIND_PRINT0 | ||
825 | niro | 816 | else if (parm == PARM_print0) { |
826 | niro | 984 | G.need_print = 0; |
827 | IF_FEATURE_FIND_NOT( invert_flag = 0; ) | ||
828 | niro | 532 | (void) ALLOC_ACTION(print0); |
829 | } | ||
830 | #endif | ||
831 | niro | 816 | #if ENABLE_FEATURE_FIND_DEPTH |
832 | else if (parm == PARM_depth) { | ||
833 | niro | 984 | G.recurse_flags |= ACTION_DEPTHFIRST; |
834 | niro | 816 | } |
835 | #endif | ||
836 | #if ENABLE_FEATURE_FIND_PRUNE | ||
837 | else if (parm == PARM_prune) { | ||
838 | niro | 984 | IF_FEATURE_FIND_NOT( invert_flag = 0; ) |
839 | niro | 816 | (void) ALLOC_ACTION(prune); |
840 | } | ||
841 | #endif | ||
842 | #if ENABLE_FEATURE_FIND_DELETE | ||
843 | else if (parm == PARM_delete) { | ||
844 | niro | 984 | G.need_print = 0; |
845 | G.recurse_flags |= ACTION_DEPTHFIRST; | ||
846 | niro | 816 | (void) ALLOC_ACTION(delete); |
847 | } | ||
848 | #endif | ||
849 | #if ENABLE_FEATURE_FIND_EXEC | ||
850 | else if (parm == PARM_exec) { | ||
851 | int i; | ||
852 | action_exec *ap; | ||
853 | niro | 984 | G.need_print = 0; |
854 | IF_FEATURE_FIND_NOT( invert_flag = 0; ) | ||
855 | niro | 816 | ap = ALLOC_ACTION(exec); |
856 | ap->exec_argv = ++argv; /* first arg after -exec */ | ||
857 | ap->exec_argc = 0; | ||
858 | while (1) { | ||
859 | niro | 1123 | if (!*argv) /* did not see ';' or '+' until end */ |
860 | bb_error_msg_and_die(bb_msg_requires_arg, "-exec"); | ||
861 | niro | 816 | if (LONE_CHAR(argv[0], ';')) |
862 | break; | ||
863 | niro | 1123 | //TODO: implement {} + (like xargs) |
864 | // See: | ||
865 | // find findutils/ -exec echo ">"{}"<" \; | ||
866 | // find findutils/ -exec echo ">"{}"<" + | ||
867 | niro | 816 | argv++; |
868 | ap->exec_argc++; | ||
869 | } | ||
870 | if (ap->exec_argc == 0) | ||
871 | bb_error_msg_and_die(bb_msg_requires_arg, arg); | ||
872 | ap->subst_count = xmalloc(ap->exec_argc * sizeof(int)); | ||
873 | i = ap->exec_argc; | ||
874 | while (i--) | ||
875 | ap->subst_count[i] = count_subst(ap->exec_argv[i]); | ||
876 | } | ||
877 | #endif | ||
878 | #if ENABLE_FEATURE_FIND_PAREN | ||
879 | else if (parm == PARM_char_brace) { | ||
880 | action_paren *ap; | ||
881 | char **endarg; | ||
882 | unsigned nested = 1; | ||
883 | |||
884 | endarg = argv; | ||
885 | while (1) { | ||
886 | if (!*++endarg) | ||
887 | bb_error_msg_and_die("unpaired '('"); | ||
888 | if (LONE_CHAR(*endarg, '(')) | ||
889 | nested++; | ||
890 | else if (LONE_CHAR(*endarg, ')') && !--nested) { | ||
891 | *endarg = NULL; | ||
892 | break; | ||
893 | } | ||
894 | } | ||
895 | ap = ALLOC_ACTION(paren); | ||
896 | ap->subexpr = parse_params(argv + 1); | ||
897 | *endarg = (char*) ")"; /* restore NULLed parameter */ | ||
898 | argv = endarg; | ||
899 | } | ||
900 | #endif | ||
901 | else if (parm == PARM_name || parm == PARM_iname) { | ||
902 | niro | 532 | action_name *ap; |
903 | ap = ALLOC_ACTION(name); | ||
904 | ap->pattern = arg1; | ||
905 | niro | 816 | ap->iname = (parm == PARM_iname); |
906 | niro | 532 | } |
907 | niro | 816 | #if ENABLE_FEATURE_FIND_PATH |
908 | else if (parm == PARM_path) { | ||
909 | action_path *ap; | ||
910 | ap = ALLOC_ACTION(path); | ||
911 | ap->pattern = arg1; | ||
912 | } | ||
913 | #endif | ||
914 | #if ENABLE_FEATURE_FIND_REGEX | ||
915 | else if (parm == PARM_regex) { | ||
916 | action_regex *ap; | ||
917 | ap = ALLOC_ACTION(regex); | ||
918 | xregcomp(&ap->compiled_pattern, arg1, 0 /*cflags*/); | ||
919 | } | ||
920 | #endif | ||
921 | niro | 532 | #if ENABLE_FEATURE_FIND_TYPE |
922 | niro | 816 | else if (parm == PARM_type) { |
923 | niro | 532 | action_type *ap; |
924 | ap = ALLOC_ACTION(type); | ||
925 | ap->type_mask = find_type(arg1); | ||
926 | } | ||
927 | #endif | ||
928 | #if ENABLE_FEATURE_FIND_PERM | ||
929 | niro | 816 | /* -perm mode File's permission bits are exactly mode (octal or symbolic). |
930 | niro | 532 | * Symbolic modes use mode 0 as a point of departure. |
931 | * -perm -mode All of the permission bits mode are set for the file. | ||
932 | * -perm +mode Any of the permission bits mode are set for the file. | ||
933 | */ | ||
934 | niro | 816 | else if (parm == PARM_perm) { |
935 | niro | 532 | action_perm *ap; |
936 | ap = ALLOC_ACTION(perm); | ||
937 | ap->perm_char = arg1[0]; | ||
938 | niro | 816 | arg1 = plus_minus_num(arg1); |
939 | ap->perm_mask = 0; | ||
940 | if (!bb_parse_mode(arg1, &ap->perm_mask)) | ||
941 | niro | 1123 | bb_error_msg_and_die("invalid mode '%s'", arg1); |
942 | niro | 532 | } |
943 | #endif | ||
944 | #if ENABLE_FEATURE_FIND_MTIME | ||
945 | niro | 816 | else if (parm == PARM_mtime) { |
946 | niro | 532 | action_mtime *ap; |
947 | ap = ALLOC_ACTION(mtime); | ||
948 | ap->mtime_char = arg1[0]; | ||
949 | niro | 816 | ap->mtime_days = xatoul(plus_minus_num(arg1)); |
950 | niro | 532 | } |
951 | #endif | ||
952 | #if ENABLE_FEATURE_FIND_MMIN | ||
953 | niro | 816 | else if (parm == PARM_mmin) { |
954 | niro | 532 | action_mmin *ap; |
955 | ap = ALLOC_ACTION(mmin); | ||
956 | ap->mmin_char = arg1[0]; | ||
957 | niro | 816 | ap->mmin_mins = xatoul(plus_minus_num(arg1)); |
958 | niro | 532 | } |
959 | #endif | ||
960 | #if ENABLE_FEATURE_FIND_NEWER | ||
961 | niro | 816 | else if (parm == PARM_newer) { |
962 | struct stat stat_newer; | ||
963 | niro | 532 | action_newer *ap; |
964 | niro | 816 | ap = ALLOC_ACTION(newer); |
965 | niro | 532 | xstat(arg1, &stat_newer); |
966 | ap->newer_mtime = stat_newer.st_mtime; | ||
967 | } | ||
968 | #endif | ||
969 | #if ENABLE_FEATURE_FIND_INUM | ||
970 | niro | 816 | else if (parm == PARM_inum) { |
971 | niro | 532 | action_inum *ap; |
972 | ap = ALLOC_ACTION(inum); | ||
973 | ap->inode_num = xatoul(arg1); | ||
974 | } | ||
975 | #endif | ||
976 | niro | 816 | #if ENABLE_FEATURE_FIND_USER |
977 | else if (parm == PARM_user) { | ||
978 | action_user *ap; | ||
979 | ap = ALLOC_ACTION(user); | ||
980 | ap->uid = bb_strtou(arg1, NULL, 10); | ||
981 | if (errno) | ||
982 | ap->uid = xuname2uid(arg1); | ||
983 | niro | 532 | } |
984 | #endif | ||
985 | niro | 816 | #if ENABLE_FEATURE_FIND_GROUP |
986 | else if (parm == PARM_group) { | ||
987 | action_group *ap; | ||
988 | ap = ALLOC_ACTION(group); | ||
989 | ap->gid = bb_strtou(arg1, NULL, 10); | ||
990 | if (errno) | ||
991 | ap->gid = xgroup2gid(arg1); | ||
992 | niro | 532 | } |
993 | niro | 816 | #endif |
994 | #if ENABLE_FEATURE_FIND_SIZE | ||
995 | else if (parm == PARM_size) { | ||
996 | /* -size n[bckw]: file uses n units of space | ||
997 | * b (default): units are 512-byte blocks | ||
998 | * c: 1 byte | ||
999 | * k: kilobytes | ||
1000 | * w: 2-byte words | ||
1001 | */ | ||
1002 | #if ENABLE_LFS | ||
1003 | #define XATOU_SFX xatoull_sfx | ||
1004 | #else | ||
1005 | #define XATOU_SFX xatoul_sfx | ||
1006 | #endif | ||
1007 | static const struct suffix_mult find_suffixes[] = { | ||
1008 | { "c", 1 }, | ||
1009 | { "w", 2 }, | ||
1010 | { "", 512 }, | ||
1011 | { "b", 512 }, | ||
1012 | { "k", 1024 }, | ||
1013 | niro | 984 | { "", 0 } |
1014 | niro | 816 | }; |
1015 | niro | 532 | action_size *ap; |
1016 | ap = ALLOC_ACTION(size); | ||
1017 | niro | 816 | ap->size_char = arg1[0]; |
1018 | ap->size = XATOU_SFX(plus_minus_num(arg1), find_suffixes); | ||
1019 | niro | 532 | } |
1020 | #endif | ||
1021 | niro | 816 | #if ENABLE_FEATURE_FIND_CONTEXT |
1022 | else if (parm == PARM_context) { | ||
1023 | action_context *ap; | ||
1024 | ap = ALLOC_ACTION(context); | ||
1025 | ap->context = NULL; | ||
1026 | /* SELinux headers erroneously declare non-const parameter */ | ||
1027 | if (selinux_raw_to_trans_context((char*)arg1, &ap->context)) | ||
1028 | bb_simple_perror_msg(arg1); | ||
1029 | } | ||
1030 | #endif | ||
1031 | niro | 984 | #if ENABLE_FEATURE_FIND_LINKS |
1032 | else if (parm == PARM_links) { | ||
1033 | action_links *ap; | ||
1034 | ap = ALLOC_ACTION(links); | ||
1035 | ap->links_char = arg1[0]; | ||
1036 | ap->links_count = xatoul(plus_minus_num(arg1)); | ||
1037 | } | ||
1038 | #endif | ||
1039 | niro | 816 | else { |
1040 | bb_error_msg("unrecognized: %s", arg); | ||
1041 | niro | 532 | bb_show_usage(); |
1042 | niro | 816 | } |
1043 | niro | 532 | argv++; |
1044 | } | ||
1045 | return appp; | ||
1046 | #undef ALLOC_ACTION | ||
1047 | } | ||
1048 | |||
1049 | niro | 1123 | //usage:#define find_trivial_usage |
1050 | //usage: "[PATH]... [EXPRESSION]" | ||
1051 | //usage:#define find_full_usage "\n\n" | ||
1052 | //usage: "Search for files. The default PATH is the current directory,\n" | ||
1053 | //usage: "default EXPRESSION is '-print'\n" | ||
1054 | //usage: "\nEXPRESSION may consist of:" | ||
1055 | //usage: "\n -follow Follow symlinks" | ||
1056 | //usage: IF_FEATURE_FIND_XDEV( | ||
1057 | //usage: "\n -xdev Don't descend directories on other filesystems" | ||
1058 | //usage: ) | ||
1059 | //usage: IF_FEATURE_FIND_MAXDEPTH( | ||
1060 | //usage: "\n -maxdepth N Descend at most N levels. -maxdepth 0 applies" | ||
1061 | //usage: "\n tests/actions to command line arguments only" | ||
1062 | //usage: ) | ||
1063 | //usage: "\n -mindepth N Don't act on first N levels" | ||
1064 | //usage: "\n -name PATTERN File name (w/o directory name) matches PATTERN" | ||
1065 | //usage: "\n -iname PATTERN Case insensitive -name" | ||
1066 | //usage: IF_FEATURE_FIND_PATH( | ||
1067 | //usage: "\n -path PATTERN Path matches PATTERN" | ||
1068 | //usage: ) | ||
1069 | //usage: IF_FEATURE_FIND_REGEX( | ||
1070 | //usage: "\n -regex PATTERN Path matches regex PATTERN" | ||
1071 | //usage: ) | ||
1072 | //usage: IF_FEATURE_FIND_TYPE( | ||
1073 | //usage: "\n -type X File type is X (X is one of: f,d,l,b,c,...)" | ||
1074 | //usage: ) | ||
1075 | //usage: IF_FEATURE_FIND_PERM( | ||
1076 | //usage: "\n -perm NNN Permissions match any of (+NNN), all of (-NNN)," | ||
1077 | //usage: "\n or exactly NNN" | ||
1078 | //usage: ) | ||
1079 | //usage: IF_FEATURE_FIND_MTIME( | ||
1080 | //usage: "\n -mtime DAYS Modified time is greater than (+N), less than (-N)," | ||
1081 | //usage: "\n or exactly N days" | ||
1082 | //usage: ) | ||
1083 | //usage: IF_FEATURE_FIND_MMIN( | ||
1084 | //usage: "\n -mmin MINS Modified time is greater than (+N), less than (-N)," | ||
1085 | //usage: "\n or exactly N minutes" | ||
1086 | //usage: ) | ||
1087 | //usage: IF_FEATURE_FIND_NEWER( | ||
1088 | //usage: "\n -newer FILE Modified time is more recent than FILE's" | ||
1089 | //usage: ) | ||
1090 | //usage: IF_FEATURE_FIND_INUM( | ||
1091 | //usage: "\n -inum N File has inode number N" | ||
1092 | //usage: ) | ||
1093 | //usage: IF_FEATURE_FIND_USER( | ||
1094 | //usage: "\n -user NAME File is owned by user NAME (numeric user ID allowed)" | ||
1095 | //usage: ) | ||
1096 | //usage: IF_FEATURE_FIND_GROUP( | ||
1097 | //usage: "\n -group NAME File belongs to group NAME (numeric group ID allowed)" | ||
1098 | //usage: ) | ||
1099 | //usage: IF_FEATURE_FIND_DEPTH( | ||
1100 | //usage: "\n -depth Process directory name after traversing it" | ||
1101 | //usage: ) | ||
1102 | //usage: IF_FEATURE_FIND_SIZE( | ||
1103 | //usage: "\n -size N[bck] File size is N (c:bytes,k:kbytes,b:512 bytes(def.))" | ||
1104 | //usage: "\n +/-N: file size is bigger/smaller than N" | ||
1105 | //usage: ) | ||
1106 | //usage: IF_FEATURE_FIND_LINKS( | ||
1107 | //usage: "\n -links N Number of links is greater than (+N), less than (-N)," | ||
1108 | //usage: "\n or exactly N" | ||
1109 | //usage: ) | ||
1110 | //usage: "\n -print Print (default and assumed)" | ||
1111 | //usage: IF_FEATURE_FIND_PRINT0( | ||
1112 | //usage: "\n -print0 Delimit output with null characters rather than" | ||
1113 | //usage: "\n newlines" | ||
1114 | //usage: ) | ||
1115 | //usage: IF_FEATURE_FIND_CONTEXT( | ||
1116 | //usage: "\n -context File has specified security context" | ||
1117 | //usage: ) | ||
1118 | //usage: IF_FEATURE_FIND_EXEC( | ||
1119 | //usage: "\n -exec CMD ARG ; Run CMD with all instances of {} replaced by the" | ||
1120 | //usage: "\n matching files" | ||
1121 | //usage: ) | ||
1122 | //usage: IF_FEATURE_FIND_PRUNE( | ||
1123 | //usage: "\n -prune Stop traversing current subtree" | ||
1124 | //usage: ) | ||
1125 | //usage: IF_FEATURE_FIND_DELETE( | ||
1126 | //usage: "\n -delete Delete files, turns on -depth option" | ||
1127 | //usage: ) | ||
1128 | //usage: IF_FEATURE_FIND_PAREN( | ||
1129 | //usage: "\n (EXPR) Group an expression" | ||
1130 | //usage: ) | ||
1131 | //usage: | ||
1132 | //usage:#define find_example_usage | ||
1133 | //usage: "$ find / -name passwd\n" | ||
1134 | //usage: "/etc/passwd\n" | ||
1135 | niro | 532 | |
1136 | niro | 816 | int find_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
1137 | niro | 984 | int find_main(int argc UNUSED_PARAM, char **argv) |
1138 | niro | 532 | { |
1139 | niro | 816 | static const char options[] ALIGN1 = |
1140 | "-follow\0" | ||
1141 | niro | 984 | IF_FEATURE_FIND_XDEV( "-xdev\0" ) |
1142 | IF_FEATURE_FIND_MAXDEPTH("-mindepth\0""-maxdepth\0") | ||
1143 | niro | 816 | ; |
1144 | enum { | ||
1145 | OPT_FOLLOW, | ||
1146 | niro | 984 | IF_FEATURE_FIND_XDEV( OPT_XDEV ,) |
1147 | IF_FEATURE_FIND_MAXDEPTH(OPT_MINDEPTH,) | ||
1148 | niro | 816 | }; |
1149 | |||
1150 | niro | 532 | char *arg; |
1151 | char **argp; | ||
1152 | int i, firstopt, status = EXIT_SUCCESS; | ||
1153 | niro | 816 | #if ENABLE_FEATURE_FIND_MAXDEPTH |
1154 | niro | 984 | int minmaxdepth[2] = { 0, INT_MAX }; |
1155 | #else | ||
1156 | #define minmaxdepth NULL | ||
1157 | niro | 816 | #endif |
1158 | niro | 532 | |
1159 | niro | 984 | INIT_G(); |
1160 | |||
1161 | for (firstopt = 1; argv[firstopt]; firstopt++) { | ||
1162 | niro | 532 | if (argv[firstopt][0] == '-') |
1163 | break; | ||
1164 | niro | 816 | if (ENABLE_FEATURE_FIND_NOT && LONE_CHAR(argv[firstopt], '!')) |
1165 | break; | ||
1166 | #if ENABLE_FEATURE_FIND_PAREN | ||
1167 | niro | 532 | if (LONE_CHAR(argv[firstopt], '(')) |
1168 | break; | ||
1169 | #endif | ||
1170 | } | ||
1171 | if (firstopt == 1) { | ||
1172 | niro | 816 | argv[0] = (char*)"."; |
1173 | niro | 532 | argv--; |
1174 | firstopt++; | ||
1175 | } | ||
1176 | |||
1177 | niro | 816 | /* All options always return true. They always take effect |
1178 | * rather than being processed only when their place in the | ||
1179 | * expression is reached. | ||
1180 | * We implement: -follow, -xdev, -maxdepth | ||
1181 | */ | ||
1182 | niro | 532 | /* Process options, and replace then with -a */ |
1183 | /* (-a will be ignored by recursive parser later) */ | ||
1184 | argp = &argv[firstopt]; | ||
1185 | while ((arg = argp[0])) { | ||
1186 | niro | 816 | int opt = index_in_strings(options, arg); |
1187 | if (opt == OPT_FOLLOW) { | ||
1188 | niro | 984 | G.recurse_flags |= ACTION_FOLLOWLINKS | ACTION_DANGLING_OK; |
1189 | niro | 816 | argp[0] = (char*)"-a"; |
1190 | niro | 532 | } |
1191 | #if ENABLE_FEATURE_FIND_XDEV | ||
1192 | niro | 816 | if (opt == OPT_XDEV) { |
1193 | niro | 532 | struct stat stbuf; |
1194 | niro | 984 | if (!G.xdev_count) { |
1195 | G.xdev_count = firstopt - 1; | ||
1196 | G.xdev_dev = xzalloc(G.xdev_count * sizeof(G.xdev_dev[0])); | ||
1197 | niro | 532 | for (i = 1; i < firstopt; i++) { |
1198 | /* not xstat(): shouldn't bomb out on | ||
1199 | * "find not_exist exist -xdev" */ | ||
1200 | niro | 984 | if (stat(argv[i], &stbuf) == 0) |
1201 | G.xdev_dev[i-1] = stbuf.st_dev; | ||
1202 | /* else G.xdev_dev[i-1] stays 0 and | ||
1203 | * won't match any real device dev_t */ | ||
1204 | niro | 532 | } |
1205 | } | ||
1206 | niro | 816 | argp[0] = (char*)"-a"; |
1207 | niro | 532 | } |
1208 | #endif | ||
1209 | niro | 816 | #if ENABLE_FEATURE_FIND_MAXDEPTH |
1210 | niro | 984 | if (opt == OPT_MINDEPTH || opt == OPT_MINDEPTH + 1) { |
1211 | niro | 816 | if (!argp[1]) |
1212 | bb_show_usage(); | ||
1213 | niro | 984 | minmaxdepth[opt - OPT_MINDEPTH] = xatoi_u(argp[1]); |
1214 | niro | 816 | argp[0] = (char*)"-a"; |
1215 | argp[1] = (char*)"-a"; | ||
1216 | argp++; | ||
1217 | } | ||
1218 | #endif | ||
1219 | niro | 532 | argp++; |
1220 | } | ||
1221 | |||
1222 | niro | 984 | G.actions = parse_params(&argv[firstopt]); |
1223 | niro | 532 | |
1224 | for (i = 1; i < firstopt; i++) { | ||
1225 | if (!recursive_action(argv[i], | ||
1226 | niro | 984 | G.recurse_flags,/* flags */ |
1227 | niro | 816 | fileAction, /* file action */ |
1228 | fileAction, /* dir action */ | ||
1229 | #if ENABLE_FEATURE_FIND_MAXDEPTH | ||
1230 | niro | 984 | minmaxdepth, /* user data */ |
1231 | niro | 816 | #else |
1232 | NULL, /* user data */ | ||
1233 | #endif | ||
1234 | 0)) /* depth */ | ||
1235 | niro | 532 | status = EXIT_FAILURE; |
1236 | } | ||
1237 | return status; | ||
1238 | } |