blob: 1c8ab89e8f0a94021261df8c6da5805bdb6d4923
1 | /* |
2 | setfiles: based on policycoreutils 2.0.19 |
3 | policycoreutils was released under GPL 2. |
4 | Port to BusyBox (c) 2007 by Yuichi Nakamura <ynakam@hitachisoft.jp> |
5 | */ |
6 | |
7 | //usage:#define setfiles_trivial_usage |
8 | //usage: "[-dnpqsvW] [-e DIR]... [-o FILE] [-r alt_root_path]" |
9 | //usage: IF_FEATURE_SETFILES_CHECK_OPTION( |
10 | //usage: " [-c policyfile] spec_file" |
11 | //usage: ) |
12 | //usage: " pathname" |
13 | //usage:#define setfiles_full_usage "\n\n" |
14 | //usage: "Reset file contexts under pathname according to spec_file\n" |
15 | //usage: IF_FEATURE_SETFILES_CHECK_OPTION( |
16 | //usage: "\n -c FILE Check the validity of the contexts against the specified binary policy" |
17 | //usage: ) |
18 | //usage: "\n -d Show which specification matched each file" |
19 | //usage: "\n -l Log changes in file labels to syslog" |
20 | //usage: "\n -n Don't change any file labels" |
21 | //usage: "\n -q Suppress warnings" |
22 | //usage: "\n -r DIR Use an alternate root path" |
23 | //usage: "\n -e DIR Exclude DIR" |
24 | //usage: "\n -F Force reset of context to match file_context for customizable files" |
25 | //usage: "\n -o FILE Save list of files with incorrect context" |
26 | //usage: "\n -s Take a list of files from stdin (instead of command line)" |
27 | //usage: "\n -v Show changes in file labels, if type or role are changing" |
28 | //usage: "\n -vv Show changes in file labels, if type, role, or user are changing" |
29 | //usage: "\n -W Display warnings about entries that had no matching files" |
30 | //usage: |
31 | //usage:#define restorecon_trivial_usage |
32 | //usage: "[-iFnRv] [-e EXCLUDEDIR]... [-o FILE] [-f FILE]" |
33 | //usage:#define restorecon_full_usage "\n\n" |
34 | //usage: "Reset security contexts of files in pathname\n" |
35 | //usage: "\n -i Ignore files that don't exist" |
36 | //usage: "\n -f FILE File with list of files to process" |
37 | //usage: "\n -e DIR Directory to exclude" |
38 | //usage: "\n -R,-r Recurse" |
39 | //usage: "\n -n Don't change any file labels" |
40 | //usage: "\n -o FILE Save list of files with incorrect context" |
41 | //usage: "\n -v Verbose" |
42 | //usage: "\n -vv Show changed labels" |
43 | //usage: "\n -F Force reset of context to match file_context" |
44 | //usage: "\n for customizable files, or the user section," |
45 | //usage: "\n if it has changed" |
46 | |
47 | #include "libbb.h" |
48 | #if ENABLE_FEATURE_SETFILES_CHECK_OPTION |
49 | #include <sepol/sepol.h> |
50 | #endif |
51 | |
52 | #define MAX_EXCLUDES 50 |
53 | |
54 | struct edir { |
55 | char *directory; |
56 | size_t size; |
57 | }; |
58 | |
59 | struct globals { |
60 | FILE *outfile; |
61 | char *policyfile; |
62 | char *rootpath; |
63 | int rootpathlen; |
64 | unsigned count; |
65 | int excludeCtr; |
66 | int errors; |
67 | int verbose; /* getopt32 uses it, has to be int */ |
68 | smallint recurse; /* Recursive descent */ |
69 | smallint follow_mounts; |
70 | /* Behavior flags determined based on setfiles vs. restorecon */ |
71 | smallint expand_realpath; /* Expand paths via realpath */ |
72 | smallint abort_on_error; /* Abort the file tree walk upon an error */ |
73 | int add_assoc; /* Track inode associations for conflict detection */ |
74 | int matchpathcon_flags; /* Flags to matchpathcon */ |
75 | dev_t dev_id; /* Device id where target file exists */ |
76 | int nerr; |
77 | struct edir excludeArray[MAX_EXCLUDES]; |
78 | } FIX_ALIASING; |
79 | #define G (*(struct globals*)&bb_common_bufsiz1) |
80 | void BUG_setfiles_globals_too_big(void); |
81 | #define INIT_G() do { \ |
82 | if (sizeof(G) > COMMON_BUFSIZE) \ |
83 | BUG_setfiles_globals_too_big(); \ |
84 | /* memset(&G, 0, sizeof(G)); - already is */ \ |
85 | } while (0) |
86 | #define outfile (G.outfile ) |
87 | #define policyfile (G.policyfile ) |
88 | #define rootpath (G.rootpath ) |
89 | #define rootpathlen (G.rootpathlen ) |
90 | #define count (G.count ) |
91 | #define excludeCtr (G.excludeCtr ) |
92 | #define errors (G.errors ) |
93 | #define verbose (G.verbose ) |
94 | #define recurse (G.recurse ) |
95 | #define follow_mounts (G.follow_mounts ) |
96 | #define expand_realpath (G.expand_realpath ) |
97 | #define abort_on_error (G.abort_on_error ) |
98 | #define add_assoc (G.add_assoc ) |
99 | #define matchpathcon_flags (G.matchpathcon_flags) |
100 | #define dev_id (G.dev_id ) |
101 | #define nerr (G.nerr ) |
102 | #define excludeArray (G.excludeArray ) |
103 | |
104 | /* Must match getopt32 string! */ |
105 | enum { |
106 | OPT_d = (1 << 0), |
107 | OPT_e = (1 << 1), |
108 | OPT_f = (1 << 2), |
109 | OPT_i = (1 << 3), |
110 | OPT_l = (1 << 4), |
111 | OPT_n = (1 << 5), |
112 | OPT_p = (1 << 6), |
113 | OPT_q = (1 << 7), |
114 | OPT_r = (1 << 8), |
115 | OPT_s = (1 << 9), |
116 | OPT_v = (1 << 10), |
117 | OPT_o = (1 << 11), |
118 | OPT_F = (1 << 12), |
119 | OPT_W = (1 << 13), |
120 | OPT_c = (1 << 14), /* c only for setfiles */ |
121 | OPT_R = (1 << 14), /* R only for restorecon */ |
122 | }; |
123 | #define FLAG_d_debug (option_mask32 & OPT_d) |
124 | #define FLAG_e (option_mask32 & OPT_e) |
125 | #define FLAG_f (option_mask32 & OPT_f) |
126 | #define FLAG_i_ignore_enoent (option_mask32 & OPT_i) |
127 | #define FLAG_l_take_log (option_mask32 & OPT_l) |
128 | #define FLAG_n_dry_run (option_mask32 & OPT_n) |
129 | #define FLAG_p_progress (option_mask32 & OPT_p) |
130 | #define FLAG_q_quiet (option_mask32 & OPT_q) |
131 | #define FLAG_r (option_mask32 & OPT_r) |
132 | #define FLAG_s (option_mask32 & OPT_s) |
133 | #define FLAG_v (option_mask32 & OPT_v) |
134 | #define FLAG_o (option_mask32 & OPT_o) |
135 | #define FLAG_F_force (option_mask32 & OPT_F) |
136 | #define FLAG_W_warn_no_match (option_mask32 & OPT_W) |
137 | #define FLAG_c (option_mask32 & OPT_c) |
138 | #define FLAG_R (option_mask32 & OPT_R) |
139 | |
140 | |
141 | static void qprintf(const char *fmt UNUSED_PARAM, ...) |
142 | { |
143 | /* quiet, do nothing */ |
144 | } |
145 | |
146 | static void inc_err(void) |
147 | { |
148 | nerr++; |
149 | if (nerr > 9 && !FLAG_d_debug) { |
150 | bb_error_msg_and_die("exiting after 10 errors"); |
151 | } |
152 | } |
153 | |
154 | static void add_exclude(const char *directory) |
155 | { |
156 | struct stat sb; |
157 | size_t len; |
158 | |
159 | if (directory == NULL || directory[0] != '/') { |
160 | bb_error_msg_and_die("full path required for exclude: %s", directory); |
161 | } |
162 | if (lstat(directory, &sb)) { |
163 | bb_error_msg("directory \"%s\" not found, ignoring", directory); |
164 | return; |
165 | } |
166 | if ((sb.st_mode & S_IFDIR) == 0) { |
167 | bb_error_msg("\"%s\" is not a directory: mode %o, ignoring", |
168 | directory, sb.st_mode); |
169 | return; |
170 | } |
171 | if (excludeCtr == MAX_EXCLUDES) { |
172 | bb_error_msg_and_die("maximum excludes %d exceeded", MAX_EXCLUDES); |
173 | } |
174 | |
175 | len = strlen(directory); |
176 | while (len > 1 && directory[len - 1] == '/') { |
177 | len--; |
178 | } |
179 | excludeArray[excludeCtr].directory = xstrndup(directory, len); |
180 | excludeArray[excludeCtr++].size = len; |
181 | } |
182 | |
183 | static bool exclude(const char *file) |
184 | { |
185 | int i = 0; |
186 | for (i = 0; i < excludeCtr; i++) { |
187 | if (strncmp(file, excludeArray[i].directory, |
188 | excludeArray[i].size) == 0) { |
189 | if (file[excludeArray[i].size] == '\0' |
190 | || file[excludeArray[i].size] == '/') { |
191 | return 1; |
192 | } |
193 | } |
194 | } |
195 | return 0; |
196 | } |
197 | |
198 | static int match(const char *name, struct stat *sb, char **con) |
199 | { |
200 | int ret; |
201 | char path[PATH_MAX + 1]; |
202 | char *tmp_path = xstrdup(name); |
203 | |
204 | if (excludeCtr > 0 && exclude(name)) { |
205 | goto err; |
206 | } |
207 | ret = lstat(name, sb); |
208 | if (ret) { |
209 | if (FLAG_i_ignore_enoent && errno == ENOENT) { |
210 | free(tmp_path); |
211 | return 0; |
212 | } |
213 | bb_error_msg("stat(%s)", name); |
214 | goto err; |
215 | } |
216 | |
217 | if (expand_realpath) { |
218 | if (S_ISLNK(sb->st_mode)) { |
219 | char *p = NULL; |
220 | char *file_sep; |
221 | |
222 | size_t len = 0; |
223 | |
224 | if (verbose > 1) |
225 | bb_error_msg("warning! %s refers to a symbolic link, not following last component", name); |
226 | |
227 | file_sep = strrchr(tmp_path, '/'); |
228 | if (file_sep == tmp_path) { |
229 | file_sep++; |
230 | path[0] = '\0'; |
231 | p = path; |
232 | } else if (file_sep) { |
233 | *file_sep++ = '\0'; |
234 | p = realpath(tmp_path, path); |
235 | } else { |
236 | file_sep = tmp_path; |
237 | p = realpath("./", path); |
238 | } |
239 | if (p) |
240 | len = strlen(p); |
241 | if (!p || len + strlen(file_sep) + 2 > PATH_MAX) { |
242 | bb_perror_msg("realpath(%s) failed", name); |
243 | goto err; |
244 | } |
245 | p += len; |
246 | /* ensure trailing slash of directory name */ |
247 | if (len == 0 || p[-1] != '/') { |
248 | *p++ = '/'; |
249 | } |
250 | strcpy(p, file_sep); |
251 | name = path; |
252 | if (excludeCtr > 0 && exclude(name)) |
253 | goto err; |
254 | |
255 | } else { |
256 | char *p; |
257 | p = realpath(name, path); |
258 | if (!p) { |
259 | bb_perror_msg("realpath(%s)", name); |
260 | goto err; |
261 | } |
262 | name = p; |
263 | if (excludeCtr > 0 && exclude(name)) |
264 | goto err; |
265 | } |
266 | } |
267 | |
268 | /* name will be what is matched in the policy */ |
269 | if (NULL != rootpath) { |
270 | if (0 != strncmp(rootpath, name, rootpathlen)) { |
271 | bb_error_msg("%s is not located in %s", |
272 | name, rootpath); |
273 | goto err; |
274 | } |
275 | name += rootpathlen; |
276 | } |
277 | |
278 | free(tmp_path); |
279 | if (rootpath != NULL && name[0] == '\0') |
280 | /* this is actually the root dir of the alt root */ |
281 | return matchpathcon_index("/", sb->st_mode, con); |
282 | return matchpathcon_index(name, sb->st_mode, con); |
283 | err: |
284 | free(tmp_path); |
285 | return -1; |
286 | } |
287 | |
288 | /* Compare two contexts to see if their differences are "significant", |
289 | * or whether the only difference is in the user. */ |
290 | static bool only_changed_user(const char *a, const char *b) |
291 | { |
292 | if (FLAG_F_force) |
293 | return 0; |
294 | if (!a || !b) |
295 | return 0; |
296 | a = strchr(a, ':'); /* Rest of the context after the user */ |
297 | b = strchr(b, ':'); |
298 | if (!a || !b) |
299 | return 0; |
300 | return (strcmp(a, b) == 0); |
301 | } |
302 | |
303 | static int restore(const char *file) |
304 | { |
305 | char *my_file; |
306 | struct stat my_sb; |
307 | int i, j, ret; |
308 | char *context = NULL; |
309 | char *newcon = NULL; |
310 | bool user_only_changed = 0; |
311 | int retval = 0; |
312 | |
313 | my_file = bb_simplify_path(file); |
314 | |
315 | i = match(my_file, &my_sb, &newcon); |
316 | |
317 | if (i < 0) /* No matching specification. */ |
318 | goto out; |
319 | |
320 | if (FLAG_p_progress) { |
321 | count++; |
322 | if (count % 0x400 == 0) { /* every 1024 times */ |
323 | count = (count % (80*0x400)); |
324 | if (count == 0) |
325 | bb_putchar('\n'); |
326 | bb_putchar('*'); |
327 | fflush_all(); |
328 | } |
329 | } |
330 | |
331 | /* |
332 | * Try to add an association between this inode and |
333 | * this specification. If there is already an association |
334 | * for this inode and it conflicts with this specification, |
335 | * then use the last matching specification. |
336 | */ |
337 | if (add_assoc) { |
338 | j = matchpathcon_filespec_add(my_sb.st_ino, i, my_file); |
339 | if (j < 0) |
340 | goto err; |
341 | |
342 | if (j != i) { |
343 | /* There was already an association and it took precedence. */ |
344 | goto out; |
345 | } |
346 | } |
347 | |
348 | if (FLAG_d_debug) |
349 | printf("%s: %s matched by %s\n", applet_name, my_file, newcon); |
350 | |
351 | /* Get the current context of the file. */ |
352 | ret = lgetfilecon_raw(my_file, &context); |
353 | if (ret < 0) { |
354 | if (errno == ENODATA) { |
355 | context = NULL; /* paranoia */ |
356 | } else { |
357 | bb_perror_msg("lgetfilecon_raw on %s", my_file); |
358 | goto err; |
359 | } |
360 | user_only_changed = 0; |
361 | } else |
362 | user_only_changed = only_changed_user(context, newcon); |
363 | |
364 | /* |
365 | * Do not relabel the file if the matching specification is |
366 | * <<none>> or the file is already labeled according to the |
367 | * specification. |
368 | */ |
369 | if ((strcmp(newcon, "<<none>>") == 0) |
370 | || (context && (strcmp(context, newcon) == 0) && !FLAG_F_force)) { |
371 | goto out; |
372 | } |
373 | |
374 | if (!FLAG_F_force && context && (is_context_customizable(context) > 0)) { |
375 | if (verbose > 1) { |
376 | bb_error_msg("skipping %s. %s is customizable_types", |
377 | my_file, context); |
378 | } |
379 | goto out; |
380 | } |
381 | |
382 | if (verbose) { |
383 | /* If we're just doing "-v", trim out any relabels where |
384 | * the user has changed but the role and type are the |
385 | * same. For "-vv", emit everything. */ |
386 | if (verbose > 1 || !user_only_changed) { |
387 | bb_info_msg("%s: reset %s context %s->%s", |
388 | applet_name, my_file, context ? context : "", newcon); |
389 | } |
390 | } |
391 | |
392 | if (FLAG_l_take_log && !user_only_changed) { |
393 | if (context) |
394 | bb_info_msg("relabeling %s from %s to %s", my_file, context, newcon); |
395 | else |
396 | bb_info_msg("labeling %s to %s", my_file, newcon); |
397 | } |
398 | |
399 | if (outfile && !user_only_changed) |
400 | fprintf(outfile, "%s\n", my_file); |
401 | |
402 | /* |
403 | * Do not relabel the file if -n was used. |
404 | */ |
405 | if (FLAG_n_dry_run || user_only_changed) |
406 | goto out; |
407 | |
408 | /* |
409 | * Relabel the file to the specified context. |
410 | */ |
411 | ret = lsetfilecon(my_file, newcon); |
412 | if (ret) { |
413 | bb_perror_msg("lsetfileconon(%s,%s)", my_file, newcon); |
414 | goto err; |
415 | } |
416 | |
417 | out: |
418 | freecon(context); |
419 | freecon(newcon); |
420 | free(my_file); |
421 | return retval; |
422 | err: |
423 | retval--; /* -1 */ |
424 | goto out; |
425 | } |
426 | |
427 | /* |
428 | * Apply the last matching specification to a file. |
429 | * This function is called by recursive_action on each file during |
430 | * the directory traversal. |
431 | */ |
432 | static int FAST_FUNC apply_spec( |
433 | const char *file, |
434 | struct stat *sb, |
435 | void *userData UNUSED_PARAM, |
436 | int depth UNUSED_PARAM) |
437 | { |
438 | if (!follow_mounts) { |
439 | /* setfiles does not process across different mount points */ |
440 | if (sb->st_dev != dev_id) { |
441 | return SKIP; |
442 | } |
443 | } |
444 | errors |= restore(file); |
445 | if (abort_on_error && errors) |
446 | return FALSE; |
447 | return TRUE; |
448 | } |
449 | |
450 | |
451 | static int canoncon(const char *path, unsigned lineno, char **contextp) |
452 | { |
453 | static const char err_msg[] ALIGN1 = "%s: line %u has invalid context %s"; |
454 | |
455 | char *tmpcon; |
456 | char *context = *contextp; |
457 | int invalid = 0; |
458 | |
459 | #if ENABLE_FEATURE_SETFILES_CHECK_OPTION |
460 | if (policyfile) { |
461 | if (sepol_check_context(context) >= 0) |
462 | return 0; |
463 | /* Exit immediately if we're in checking mode. */ |
464 | bb_error_msg_and_die(err_msg, path, lineno, context); |
465 | } |
466 | #endif |
467 | |
468 | if (security_canonicalize_context_raw(context, &tmpcon) < 0) { |
469 | if (errno != ENOENT) { |
470 | invalid = 1; |
471 | inc_err(); |
472 | } |
473 | } else { |
474 | free(context); |
475 | *contextp = tmpcon; |
476 | } |
477 | |
478 | if (invalid) { |
479 | bb_error_msg(err_msg, path, lineno, context); |
480 | } |
481 | |
482 | return invalid; |
483 | } |
484 | |
485 | static int process_one(char *name) |
486 | { |
487 | struct stat sb; |
488 | int rc; |
489 | |
490 | rc = lstat(name, &sb); |
491 | if (rc < 0) { |
492 | if (FLAG_i_ignore_enoent && errno == ENOENT) |
493 | return 0; |
494 | bb_perror_msg("stat(%s)", name); |
495 | goto err; |
496 | } |
497 | dev_id = sb.st_dev; |
498 | |
499 | if (S_ISDIR(sb.st_mode) && recurse) { |
500 | if (recursive_action(name, |
501 | ACTION_RECURSE, |
502 | apply_spec, |
503 | apply_spec, |
504 | NULL, 0) != TRUE |
505 | ) { |
506 | bb_error_msg("error while labeling %s", name); |
507 | goto err; |
508 | } |
509 | } else { |
510 | rc = restore(name); |
511 | if (rc) |
512 | goto err; |
513 | } |
514 | |
515 | out: |
516 | if (add_assoc) { |
517 | if (FLAG_q_quiet) |
518 | set_matchpathcon_printf(&qprintf); |
519 | matchpathcon_filespec_eval(); |
520 | set_matchpathcon_printf(NULL); |
521 | matchpathcon_filespec_destroy(); |
522 | } |
523 | |
524 | return rc; |
525 | |
526 | err: |
527 | rc = -1; |
528 | goto out; |
529 | } |
530 | |
531 | int setfiles_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
532 | int setfiles_main(int argc UNUSED_PARAM, char **argv) |
533 | { |
534 | struct stat sb; |
535 | int rc, i = 0; |
536 | const char *input_filename = NULL; |
537 | char *buf = NULL; |
538 | size_t buf_len; |
539 | int flags; |
540 | llist_t *exclude_dir = NULL; |
541 | char *out_filename = NULL; |
542 | |
543 | INIT_G(); |
544 | |
545 | if (applet_name[0] == 's') { /* "setfiles" */ |
546 | /* |
547 | * setfiles: |
548 | * Recursive descent, |
549 | * Does not expand paths via realpath, |
550 | * Aborts on errors during the file tree walk, |
551 | * Try to track inode associations for conflict detection, |
552 | * Does not follow mounts, |
553 | * Validates all file contexts at init time. |
554 | */ |
555 | recurse = 1; |
556 | abort_on_error = 1; |
557 | add_assoc = 1; |
558 | /* follow_mounts = 0; - already is */ |
559 | matchpathcon_flags = MATCHPATHCON_VALIDATE | MATCHPATHCON_NOTRANS; |
560 | } else { |
561 | /* |
562 | * restorecon: |
563 | * No recursive descent unless -r/-R, |
564 | * Expands paths via realpath, |
565 | * Do not abort on errors during the file tree walk, |
566 | * Do not try to track inode associations for conflict detection, |
567 | * Follows mounts, |
568 | * Does lazy validation of contexts upon use. |
569 | */ |
570 | expand_realpath = 1; |
571 | follow_mounts = 1; |
572 | matchpathcon_flags = MATCHPATHCON_NOTRANS; |
573 | /* restorecon only */ |
574 | selinux_or_die(); |
575 | } |
576 | |
577 | set_matchpathcon_flags(matchpathcon_flags); |
578 | |
579 | opt_complementary = "e::vv:v--p:p--v:v--q:q--v"; |
580 | /* Option order must match OPT_x definitions! */ |
581 | if (applet_name[0] == 'r') { /* restorecon */ |
582 | flags = getopt32(argv, "de:f:ilnpqrsvo:FWR", |
583 | &exclude_dir, &input_filename, &out_filename, &verbose); |
584 | } else { /* setfiles */ |
585 | flags = getopt32(argv, "de:f:ilnpqr:svo:FW" |
586 | IF_FEATURE_SETFILES_CHECK_OPTION("c:"), |
587 | &exclude_dir, &input_filename, &rootpath, &out_filename, |
588 | IF_FEATURE_SETFILES_CHECK_OPTION(&policyfile,) |
589 | &verbose); |
590 | } |
591 | argv += optind; |
592 | |
593 | #if ENABLE_FEATURE_SETFILES_CHECK_OPTION |
594 | if ((applet_name[0] == 's') && (flags & OPT_c)) { |
595 | FILE *policystream; |
596 | |
597 | policystream = xfopen_for_read(policyfile); |
598 | if (sepol_set_policydb_from_file(policystream) < 0) { |
599 | bb_error_msg_and_die("sepol_set_policydb_from_file on %s", policyfile); |
600 | } |
601 | fclose(policystream); |
602 | |
603 | /* Only process the specified file_contexts file, not |
604 | * any .homedirs or .local files, and do not perform |
605 | * context translations. */ |
606 | set_matchpathcon_flags(MATCHPATHCON_BASEONLY | |
607 | MATCHPATHCON_NOTRANS | |
608 | MATCHPATHCON_VALIDATE); |
609 | } |
610 | #endif |
611 | |
612 | while (exclude_dir) |
613 | add_exclude(llist_pop(&exclude_dir)); |
614 | |
615 | if (flags & OPT_o) { |
616 | outfile = stdout; |
617 | if (NOT_LONE_CHAR(out_filename, '-')) { |
618 | outfile = xfopen_for_write(out_filename); |
619 | } |
620 | } |
621 | if (applet_name[0] == 'r') { /* restorecon */ |
622 | if (flags & (OPT_r | OPT_R)) |
623 | recurse = 1; |
624 | } else { /* setfiles */ |
625 | if (flags & OPT_r) |
626 | rootpathlen = strlen(rootpath); |
627 | } |
628 | if (flags & OPT_s) { |
629 | input_filename = "-"; |
630 | add_assoc = 0; |
631 | } |
632 | |
633 | if (applet_name[0] == 's') { /* setfiles */ |
634 | /* Use our own invalid context checking function so that |
635 | * we can support either checking against the active policy or |
636 | * checking against a binary policy file. */ |
637 | set_matchpathcon_canoncon(&canoncon); |
638 | if (!argv[0]) |
639 | bb_show_usage(); |
640 | xstat(argv[0], &sb); |
641 | if (!S_ISREG(sb.st_mode)) { |
642 | bb_error_msg_and_die("spec file %s is not a regular file", argv[0]); |
643 | } |
644 | /* Load the file contexts configuration and check it. */ |
645 | rc = matchpathcon_init(argv[0]); |
646 | if (rc < 0) { |
647 | bb_simple_perror_msg_and_die(argv[0]); |
648 | } |
649 | if (nerr) |
650 | exit(EXIT_FAILURE); |
651 | argv++; |
652 | } |
653 | |
654 | #ifdef __BIONIC__ |
655 | else { |
656 | const char *file_contexts = selinux_file_contexts_path(); |
657 | /* Load the default file contexts configuration and check it. */ |
658 | if (matchpathcon_init(file_contexts) < 0) { |
659 | bb_perror_msg_and_die("%s not found!", file_contexts); |
660 | } |
661 | } |
662 | #endif |
663 | |
664 | if (input_filename) { |
665 | ssize_t len; |
666 | FILE *f = stdin; |
667 | |
668 | if (NOT_LONE_CHAR(input_filename, '-')) |
669 | f = xfopen_for_read(input_filename); |
670 | while ((len = getline(&buf, &buf_len, f)) > 0) { |
671 | buf[len - 1] = '\0'; |
672 | errors |= process_one(buf); |
673 | } |
674 | if (ENABLE_FEATURE_CLEAN_UP) |
675 | fclose_if_not_stdin(f); |
676 | } else { |
677 | if (!argv[0]) |
678 | bb_show_usage(); |
679 | for (i = 0; argv[i]; i++) { |
680 | errors |= process_one(argv[i]); |
681 | } |
682 | } |
683 | |
684 | if (FLAG_W_warn_no_match) |
685 | matchpathcon_checkmatches(argv[0]); |
686 | |
687 | if (ENABLE_FEATURE_CLEAN_UP && outfile) |
688 | fclose(outfile); |
689 | |
690 | return errors; |
691 | } |
692 |