source: MondoRescue/branches/stable/mindi-busybox/findutils/find.c@ 821

Last change on this file since 821 was 821, checked in by Bruno Cornec, 18 years ago

Addition of busybox 1.2.1 as a mindi-busybox new package
This should avoid delivering binary files in mindi not built there (Fedora and Debian are quite serious about that)
File size: 8.1 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 the GPL v2 or later, see the file LICENSE in this tarball.
11 */
12
13#include "busybox.h"
14#include <stdio.h>
15#include <unistd.h>
16#include <dirent.h>
17#include <string.h>
18#include <stdlib.h>
19#include <fnmatch.h>
20#include <time.h>
21#include <ctype.h>
22
23static char *pattern;
24#ifdef CONFIG_FEATURE_FIND_PRINT0
25static char printsep = '\n';
26#endif
27
28#ifdef CONFIG_FEATURE_FIND_TYPE
29static int type_mask = 0;
30#endif
31
32#ifdef CONFIG_FEATURE_FIND_PERM
33static char perm_char = 0;
34static int perm_mask = 0;
35#endif
36
37#ifdef CONFIG_FEATURE_FIND_MTIME
38static char mtime_char;
39static int mtime_days;
40#endif
41
42#ifdef CONFIG_FEATURE_FIND_MMIN
43static char mmin_char;
44static int mmin_mins;
45#endif
46
47#ifdef CONFIG_FEATURE_FIND_XDEV
48static dev_t *xdev_dev;
49static int xdev_count = 0;
50#endif
51
52#ifdef CONFIG_FEATURE_FIND_NEWER
53static time_t newer_mtime;
54#endif
55
56#ifdef CONFIG_FEATURE_FIND_INUM
57static ino_t inode_num;
58#endif
59
60#ifdef CONFIG_FEATURE_FIND_EXEC
61static char **exec_str;
62static int num_matches;
63static int exec_opt;
64#endif
65
66static int fileAction(const char *fileName, struct stat *statbuf, void* junk)
67{
68#ifdef CONFIG_FEATURE_FIND_XDEV
69 if (S_ISDIR(statbuf->st_mode) && xdev_count) {
70 int i;
71 for (i=0; i<xdev_count; i++) {
72 if (xdev_dev[i] != statbuf->st_dev)
73 return SKIP;
74 }
75 }
76#endif
77 if (pattern != NULL) {
78 const char *tmp = strrchr(fileName, '/');
79
80 if (tmp == NULL)
81 tmp = fileName;
82 else
83 tmp++;
84 if (!(fnmatch(pattern, tmp, FNM_PERIOD) == 0))
85 goto no_match;
86 }
87#ifdef CONFIG_FEATURE_FIND_TYPE
88 if (type_mask != 0) {
89 if (!((statbuf->st_mode & S_IFMT) == type_mask))
90 goto no_match;
91 }
92#endif
93#ifdef CONFIG_FEATURE_FIND_PERM
94 if (perm_mask != 0) {
95 if (!((isdigit(perm_char) && (statbuf->st_mode & 07777) == perm_mask) ||
96 (perm_char == '-' && (statbuf->st_mode & perm_mask) == perm_mask) ||
97 (perm_char == '+' && (statbuf->st_mode & perm_mask) != 0)))
98 goto no_match;
99 }
100#endif
101#ifdef CONFIG_FEATURE_FIND_MTIME
102 if (mtime_char != 0) {
103 time_t file_age = time(NULL) - statbuf->st_mtime;
104 time_t mtime_secs = mtime_days * 24 * 60 * 60;
105 if (!((isdigit(mtime_char) && file_age >= mtime_secs &&
106 file_age < mtime_secs + 24 * 60 * 60) ||
107 (mtime_char == '+' && file_age >= mtime_secs + 24 * 60 * 60) ||
108 (mtime_char == '-' && file_age < mtime_secs)))
109 goto no_match;
110 }
111#endif
112#ifdef CONFIG_FEATURE_FIND_MMIN
113 if (mmin_char != 0) {
114 time_t file_age = time(NULL) - statbuf->st_mtime;
115 time_t mmin_secs = mmin_mins * 60;
116 if (!((isdigit(mmin_char) && file_age >= mmin_secs &&
117 file_age < mmin_secs + 60) ||
118 (mmin_char == '+' && file_age >= mmin_secs + 60) ||
119 (mmin_char == '-' && file_age < mmin_secs)))
120 goto no_match;
121 }
122#endif
123#ifdef CONFIG_FEATURE_FIND_NEWER
124 if (newer_mtime != 0) {
125 time_t file_age = newer_mtime - statbuf->st_mtime;
126 if (file_age >= 0)
127 goto no_match;
128 }
129#endif
130#ifdef CONFIG_FEATURE_FIND_INUM
131 if (inode_num != 0) {
132 if (!(statbuf->st_ino == inode_num))
133 goto no_match;
134 }
135#endif
136#ifdef CONFIG_FEATURE_FIND_EXEC
137 if (exec_opt) {
138 int i;
139 char *cmd_string = "";
140 for (i = 0; i < num_matches; i++)
141 cmd_string = bb_xasprintf("%s%s%s", cmd_string, exec_str[i], fileName);
142 cmd_string = bb_xasprintf("%s%s", cmd_string, exec_str[num_matches]);
143 system(cmd_string);
144 goto no_match;
145 }
146#endif
147
148#ifdef CONFIG_FEATURE_FIND_PRINT0
149 printf("%s%c", fileName, printsep);
150#else
151 puts(fileName);
152#endif
153no_match:
154 return (TRUE);
155}
156
157#ifdef CONFIG_FEATURE_FIND_TYPE
158static int find_type(char *type)
159{
160 int mask = 0;
161
162 switch (type[0]) {
163 case 'b':
164 mask = S_IFBLK;
165 break;
166 case 'c':
167 mask = S_IFCHR;
168 break;
169 case 'd':
170 mask = S_IFDIR;
171 break;
172 case 'p':
173 mask = S_IFIFO;
174 break;
175 case 'f':
176 mask = S_IFREG;
177 break;
178 case 'l':
179 mask = S_IFLNK;
180 break;
181 case 's':
182 mask = S_IFSOCK;
183 break;
184 }
185
186 if (mask == 0 || type[1] != '\0')
187 bb_error_msg_and_die(bb_msg_invalid_arg, type, "-type");
188
189 return mask;
190}
191#endif
192
193int find_main(int argc, char **argv)
194{
195 int dereference = FALSE;
196 int i, firstopt, status = EXIT_SUCCESS;
197
198 for (firstopt = 1; firstopt < argc; firstopt++) {
199 if (argv[firstopt][0] == '-')
200 break;
201 }
202
203 /* Parse any options */
204 for (i = firstopt; i < argc; i++) {
205 if (strcmp(argv[i], "-follow") == 0)
206 dereference = TRUE;
207 else if (strcmp(argv[i], "-print") == 0) {
208 ;
209 }
210#ifdef CONFIG_FEATURE_FIND_PRINT0
211 else if (strcmp(argv[i], "-print0") == 0)
212 printsep = '\0';
213#endif
214 else if (strcmp(argv[i], "-name") == 0) {
215 if (++i == argc)
216 bb_error_msg_and_die(bb_msg_requires_arg, "-name");
217 pattern = argv[i];
218#ifdef CONFIG_FEATURE_FIND_TYPE
219 } else if (strcmp(argv[i], "-type") == 0) {
220 if (++i == argc)
221 bb_error_msg_and_die(bb_msg_requires_arg, "-type");
222 type_mask = find_type(argv[i]);
223#endif
224#ifdef CONFIG_FEATURE_FIND_PERM
225 } else if (strcmp(argv[i], "-perm") == 0) {
226 char *end;
227 if (++i == argc)
228 bb_error_msg_and_die(bb_msg_requires_arg, "-perm");
229 perm_mask = strtol(argv[i], &end, 8);
230 if ((end[0] != '\0') || (perm_mask > 07777))
231 bb_error_msg_and_die(bb_msg_invalid_arg, argv[i], "-perm");
232 if ((perm_char = argv[i][0]) == '-')
233 perm_mask = -perm_mask;
234#endif
235#ifdef CONFIG_FEATURE_FIND_MTIME
236 } else if (strcmp(argv[i], "-mtime") == 0) {
237 char *end;
238 if (++i == argc)
239 bb_error_msg_and_die(bb_msg_requires_arg, "-mtime");
240 mtime_days = strtol(argv[i], &end, 10);
241 if (end[0] != '\0')
242 bb_error_msg_and_die(bb_msg_invalid_arg, argv[i], "-mtime");
243 if ((mtime_char = argv[i][0]) == '-')
244 mtime_days = -mtime_days;
245#endif
246#ifdef CONFIG_FEATURE_FIND_MMIN
247 } else if (strcmp(argv[i], "-mmin") == 0) {
248 char *end;
249 if (++i == argc)
250 bb_error_msg_and_die(bb_msg_requires_arg, "-mmin");
251 mmin_mins = strtol(argv[i], &end, 10);
252 if (end[0] != '\0')
253 bb_error_msg_and_die(bb_msg_invalid_arg, argv[i], "-mmin");
254 if ((mmin_char = argv[i][0]) == '-')
255 mmin_mins = -mmin_mins;
256#endif
257#ifdef CONFIG_FEATURE_FIND_XDEV
258 } else if (strcmp(argv[i], "-xdev") == 0) {
259 struct stat stbuf;
260
261 xdev_count = ( firstopt - 1 ) ? ( firstopt - 1 ) : 1;
262 xdev_dev = xmalloc ( xdev_count * sizeof( dev_t ));
263
264 if ( firstopt == 1 ) {
265 xstat ( ".", &stbuf );
266 xdev_dev [0] = stbuf. st_dev;
267 }
268 else {
269
270 for (i = 1; i < firstopt; i++) {
271 xstat ( argv [i], &stbuf );
272 xdev_dev [i-1] = stbuf. st_dev;
273 }
274 }
275#endif
276#ifdef CONFIG_FEATURE_FIND_NEWER
277 } else if (strcmp(argv[i], "-newer") == 0) {
278 struct stat stat_newer;
279 if (++i == argc)
280 bb_error_msg_and_die(bb_msg_requires_arg, "-newer");
281 xstat (argv[i], &stat_newer);
282 newer_mtime = stat_newer.st_mtime;
283#endif
284#ifdef CONFIG_FEATURE_FIND_INUM
285 } else if (strcmp(argv[i], "-inum") == 0) {
286 char *end;
287 if (++i == argc)
288 bb_error_msg_and_die(bb_msg_requires_arg, "-inum");
289 inode_num = strtol(argv[i], &end, 10);
290 if (end[0] != '\0')
291 bb_error_msg_and_die(bb_msg_invalid_arg, argv[i], "-inum");
292#endif
293#ifdef CONFIG_FEATURE_FIND_EXEC
294 } else if (strcmp(argv[i], "-exec") == 0) {
295 int b_pos;
296 char *cmd_string = "";
297
298 while (i++) {
299 if (i == argc)
300 bb_error_msg_and_die(bb_msg_requires_arg, "-exec");
301 if (*argv[i] == ';')
302 break;
303 cmd_string = bb_xasprintf("%s %s", cmd_string, argv[i]);
304 }
305
306 if (*cmd_string == 0)
307 bb_error_msg_and_die(bb_msg_requires_arg, "-exec");
308 cmd_string++;
309 exec_str = xmalloc(sizeof(char *));
310
311 while ((b_pos = strstr(cmd_string, "{}") - cmd_string), (b_pos >= 0)) {
312 num_matches++;
313 exec_str = xrealloc(exec_str, (num_matches + 1) * sizeof(char *));
314 exec_str[num_matches - 1] = bb_xstrndup(cmd_string, b_pos);
315 cmd_string += b_pos + 2;
316 }
317 exec_str[num_matches] = bb_xstrdup(cmd_string);
318 exec_opt = 1;
319#endif
320 } else
321 bb_show_usage();
322 }
323
324 if (firstopt == 1) {
325 if (! recursive_action(".", TRUE, dereference, FALSE, fileAction,
326 fileAction, NULL))
327 status = EXIT_FAILURE;
328 } else {
329 for (i = 1; i < firstopt; i++) {
330 if (! recursive_action(argv[i], TRUE, dereference, FALSE, fileAction,
331 fileAction, NULL))
332 status = EXIT_FAILURE;
333 }
334 }
335
336 return status;
337}
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