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e114e473 CS |
1 | /* |
2 | * Copyright (C) 2007 Casey Schaufler <casey@schaufler-ca.com> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation, version 2. | |
7 | * | |
8 | * Authors: | |
9 | * Casey Schaufler <casey@schaufler-ca.com> | |
10 | * Ahmed S. Darwish <darwish.07@gmail.com> | |
11 | * | |
12 | * Special thanks to the authors of selinuxfs. | |
13 | * | |
14 | * Karl MacMillan <kmacmillan@tresys.com> | |
15 | * James Morris <jmorris@redhat.com> | |
16 | * | |
17 | */ | |
18 | ||
19 | #include <linux/kernel.h> | |
20 | #include <linux/vmalloc.h> | |
21 | #include <linux/security.h> | |
22 | #include <linux/mutex.h> | |
5a0e3ad6 | 23 | #include <linux/slab.h> |
6d3dc07c | 24 | #include <net/net_namespace.h> |
e114e473 CS |
25 | #include <net/cipso_ipv4.h> |
26 | #include <linux/seq_file.h> | |
27 | #include <linux/ctype.h> | |
4bc87e62 | 28 | #include <linux/audit.h> |
e114e473 CS |
29 | #include "smack.h" |
30 | ||
31 | /* | |
32 | * smackfs pseudo filesystem. | |
33 | */ | |
34 | ||
35 | enum smk_inos { | |
36 | SMK_ROOT_INO = 2, | |
37 | SMK_LOAD = 3, /* load policy */ | |
38 | SMK_CIPSO = 4, /* load label -> CIPSO mapping */ | |
39 | SMK_DOI = 5, /* CIPSO DOI */ | |
40 | SMK_DIRECT = 6, /* CIPSO level indicating direct label */ | |
41 | SMK_AMBIENT = 7, /* internet ambient label */ | |
6d3dc07c | 42 | SMK_NETLBLADDR = 8, /* single label hosts */ |
15446235 | 43 | SMK_ONLYCAP = 9, /* the only "capable" label */ |
ecfcc53f | 44 | SMK_LOGGING = 10, /* logging */ |
7898e1f8 | 45 | SMK_LOAD_SELF = 11, /* task specific rules */ |
828716c2 | 46 | SMK_ACCESSES = 12, /* access policy */ |
f7112e6c CS |
47 | SMK_MAPPED = 13, /* CIPSO level indicating mapped label */ |
48 | SMK_LOAD2 = 14, /* load policy with long labels */ | |
49 | SMK_LOAD_SELF2 = 15, /* load task specific rules with long labels */ | |
50 | SMK_ACCESS2 = 16, /* make an access check with long labels */ | |
51 | SMK_CIPSO2 = 17, /* load long label -> CIPSO mapping */ | |
449543b0 | 52 | SMK_REVOKE_SUBJ = 18, /* set rules with subject label to '-' */ |
e114e473 CS |
53 | }; |
54 | ||
55 | /* | |
56 | * List locks | |
57 | */ | |
58 | static DEFINE_MUTEX(smack_list_lock); | |
59 | static DEFINE_MUTEX(smack_cipso_lock); | |
4bc87e62 | 60 | static DEFINE_MUTEX(smack_ambient_lock); |
6d3dc07c | 61 | static DEFINE_MUTEX(smk_netlbladdr_lock); |
e114e473 CS |
62 | |
63 | /* | |
64 | * This is the "ambient" label for network traffic. | |
65 | * If it isn't somehow marked, use this. | |
66 | * It can be reset via smackfs/ambient | |
67 | */ | |
f7112e6c | 68 | char *smack_net_ambient; |
e114e473 | 69 | |
e114e473 CS |
70 | /* |
71 | * This is the level in a CIPSO header that indicates a | |
72 | * smack label is contained directly in the category set. | |
73 | * It can be reset via smackfs/direct | |
74 | */ | |
75 | int smack_cipso_direct = SMACK_CIPSO_DIRECT_DEFAULT; | |
76 | ||
f7112e6c CS |
77 | /* |
78 | * This is the level in a CIPSO header that indicates a | |
79 | * secid is contained directly in the category set. | |
80 | * It can be reset via smackfs/mapped | |
81 | */ | |
82 | int smack_cipso_mapped = SMACK_CIPSO_MAPPED_DEFAULT; | |
83 | ||
15446235 CS |
84 | /* |
85 | * Unless a process is running with this label even | |
86 | * having CAP_MAC_OVERRIDE isn't enough to grant | |
87 | * privilege to violate MAC policy. If no label is | |
88 | * designated (the NULL case) capabilities apply to | |
89 | * everyone. It is expected that the hat (^) label | |
90 | * will be used if any label is used. | |
91 | */ | |
92 | char *smack_onlycap; | |
93 | ||
6d3dc07c CS |
94 | /* |
95 | * Certain IP addresses may be designated as single label hosts. | |
96 | * Packets are sent there unlabeled, but only from tasks that | |
97 | * can write to the specified label. | |
98 | */ | |
7198e2ee EB |
99 | |
100 | LIST_HEAD(smk_netlbladdr_list); | |
272cd7a8 CS |
101 | |
102 | /* | |
103 | * Rule lists are maintained for each label. | |
f7112e6c | 104 | * This master list is just for reading /smack/load and /smack/load2. |
272cd7a8 CS |
105 | */ |
106 | struct smack_master_list { | |
107 | struct list_head list; | |
108 | struct smack_rule *smk_rule; | |
109 | }; | |
110 | ||
7198e2ee | 111 | LIST_HEAD(smack_rule_list); |
6d3dc07c | 112 | |
e114e473 | 113 | static int smk_cipso_doi_value = SMACK_CIPSO_DOI_DEFAULT; |
e114e473 | 114 | |
4303154e EB |
115 | const char *smack_cipso_option = SMACK_CIPSO_OPTION; |
116 | ||
e114e473 CS |
117 | /* |
118 | * Values for parsing cipso rules | |
119 | * SMK_DIGITLEN: Length of a digit field in a rule. | |
b500ce8d AD |
120 | * SMK_CIPSOMIN: Minimum possible cipso rule length. |
121 | * SMK_CIPSOMAX: Maximum possible cipso rule length. | |
e114e473 CS |
122 | */ |
123 | #define SMK_DIGITLEN 4 | |
b500ce8d AD |
124 | #define SMK_CIPSOMIN (SMK_LABELLEN + 2 * SMK_DIGITLEN) |
125 | #define SMK_CIPSOMAX (SMK_CIPSOMIN + SMACK_CIPSO_MAXCATNUM * SMK_DIGITLEN) | |
126 | ||
127 | /* | |
128 | * Values for parsing MAC rules | |
129 | * SMK_ACCESS: Maximum possible combination of access permissions | |
130 | * SMK_ACCESSLEN: Maximum length for a rule access field | |
131 | * SMK_LOADLEN: Smack rule length | |
132 | */ | |
5c6d1125 JS |
133 | #define SMK_OACCESS "rwxa" |
134 | #define SMK_ACCESS "rwxat" | |
135 | #define SMK_OACCESSLEN (sizeof(SMK_OACCESS) - 1) | |
136 | #define SMK_ACCESSLEN (sizeof(SMK_ACCESS) - 1) | |
137 | #define SMK_OLOADLEN (SMK_LABELLEN + SMK_LABELLEN + SMK_OACCESSLEN) | |
138 | #define SMK_LOADLEN (SMK_LABELLEN + SMK_LABELLEN + SMK_ACCESSLEN) | |
b500ce8d | 139 | |
f7112e6c CS |
140 | /* |
141 | * Stricly for CIPSO level manipulation. | |
142 | * Set the category bit number in a smack label sized buffer. | |
143 | */ | |
144 | static inline void smack_catset_bit(unsigned int cat, char *catsetp) | |
145 | { | |
146 | if (cat == 0 || cat > (SMK_CIPSOLEN * 8)) | |
147 | return; | |
148 | ||
149 | catsetp[(cat - 1) / 8] |= 0x80 >> ((cat - 1) % 8); | |
150 | } | |
151 | ||
6d3dc07c CS |
152 | /** |
153 | * smk_netlabel_audit_set - fill a netlbl_audit struct | |
154 | * @nap: structure to fill | |
155 | */ | |
156 | static void smk_netlabel_audit_set(struct netlbl_audit *nap) | |
157 | { | |
158 | nap->loginuid = audit_get_loginuid(current); | |
159 | nap->sessionid = audit_get_sessionid(current); | |
676dac4b | 160 | nap->secid = smack_to_secid(smk_of_current()); |
6d3dc07c CS |
161 | } |
162 | ||
163 | /* | |
f7112e6c | 164 | * Value for parsing single label host rules |
6d3dc07c | 165 | * "1.2.3.4 X" |
6d3dc07c CS |
166 | */ |
167 | #define SMK_NETLBLADDRMIN 9 | |
e114e473 | 168 | |
e114e473 CS |
169 | /** |
170 | * smk_set_access - add a rule to the rule list | |
171 | * @srp: the new rule to add | |
7898e1f8 CS |
172 | * @rule_list: the list of rules |
173 | * @rule_lock: the rule list lock | |
e114e473 CS |
174 | * |
175 | * Looks through the current subject/object/access list for | |
176 | * the subject/object pair and replaces the access that was | |
177 | * there. If the pair isn't found add it with the specified | |
178 | * access. | |
81ea714b | 179 | * |
7898e1f8 | 180 | * Returns 1 if a rule was found to exist already, 0 if it is new |
81ea714b SL |
181 | * Returns 0 if nothing goes wrong or -ENOMEM if it fails |
182 | * during the allocation of the new pair to add. | |
e114e473 | 183 | */ |
7898e1f8 CS |
184 | static int smk_set_access(struct smack_rule *srp, struct list_head *rule_list, |
185 | struct mutex *rule_lock) | |
e114e473 | 186 | { |
7198e2ee | 187 | struct smack_rule *sp; |
7898e1f8 | 188 | int found = 0; |
e114e473 | 189 | |
7898e1f8 CS |
190 | mutex_lock(rule_lock); |
191 | ||
272cd7a8 CS |
192 | /* |
193 | * Because the object label is less likely to match | |
194 | * than the subject label check it first | |
195 | */ | |
7898e1f8 | 196 | list_for_each_entry_rcu(sp, rule_list, list) { |
272cd7a8 CS |
197 | if (sp->smk_object == srp->smk_object && |
198 | sp->smk_subject == srp->smk_subject) { | |
7198e2ee EB |
199 | found = 1; |
200 | sp->smk_access = srp->smk_access; | |
e114e473 CS |
201 | break; |
202 | } | |
e114e473 | 203 | } |
7198e2ee | 204 | if (found == 0) |
7898e1f8 | 205 | list_add_rcu(&srp->list, rule_list); |
e114e473 | 206 | |
7898e1f8 | 207 | mutex_unlock(rule_lock); |
e114e473 | 208 | |
7898e1f8 | 209 | return found; |
e114e473 CS |
210 | } |
211 | ||
212 | /** | |
f7112e6c CS |
213 | * smk_fill_rule - Fill Smack rule from strings |
214 | * @subject: subject label string | |
215 | * @object: object label string | |
216 | * @access: access string | |
0e94ae17 JS |
217 | * @rule: Smack rule |
218 | * @import: if non-zero, import labels | |
3518721a | 219 | * @len: label length limit |
f7112e6c CS |
220 | * |
221 | * Returns 0 on success, -1 on failure | |
e114e473 | 222 | */ |
f7112e6c CS |
223 | static int smk_fill_rule(const char *subject, const char *object, |
224 | const char *access, struct smack_rule *rule, | |
3518721a | 225 | int import, int len) |
e114e473 | 226 | { |
f7112e6c | 227 | const char *cp; |
0e94ae17 | 228 | struct smack_known *skp; |
e114e473 | 229 | |
0e94ae17 | 230 | if (import) { |
3518721a | 231 | rule->smk_subject = smk_import(subject, len); |
0e94ae17 JS |
232 | if (rule->smk_subject == NULL) |
233 | return -1; | |
234 | ||
3518721a | 235 | rule->smk_object = smk_import(object, len); |
0e94ae17 JS |
236 | if (rule->smk_object == NULL) |
237 | return -1; | |
238 | } else { | |
3518721a | 239 | cp = smk_parse_smack(subject, len); |
f7112e6c CS |
240 | if (cp == NULL) |
241 | return -1; | |
242 | skp = smk_find_entry(cp); | |
243 | kfree(cp); | |
0e94ae17 JS |
244 | if (skp == NULL) |
245 | return -1; | |
246 | rule->smk_subject = skp->smk_known; | |
247 | ||
3518721a | 248 | cp = smk_parse_smack(object, len); |
f7112e6c CS |
249 | if (cp == NULL) |
250 | return -1; | |
251 | skp = smk_find_entry(cp); | |
252 | kfree(cp); | |
0e94ae17 JS |
253 | if (skp == NULL) |
254 | return -1; | |
255 | rule->smk_object = skp->smk_known; | |
256 | } | |
7198e2ee EB |
257 | |
258 | rule->smk_access = 0; | |
e114e473 | 259 | |
3518721a | 260 | for (cp = access; *cp != '\0'; cp++) { |
f7112e6c CS |
261 | switch (*cp) { |
262 | case '-': | |
263 | break; | |
264 | case 'r': | |
265 | case 'R': | |
266 | rule->smk_access |= MAY_READ; | |
267 | break; | |
268 | case 'w': | |
269 | case 'W': | |
270 | rule->smk_access |= MAY_WRITE; | |
271 | break; | |
272 | case 'x': | |
273 | case 'X': | |
274 | rule->smk_access |= MAY_EXEC; | |
275 | break; | |
276 | case 'a': | |
277 | case 'A': | |
278 | rule->smk_access |= MAY_APPEND; | |
279 | break; | |
280 | case 't': | |
281 | case 'T': | |
282 | rule->smk_access |= MAY_TRANSMUTE; | |
283 | break; | |
284 | default: | |
3518721a | 285 | return 0; |
f7112e6c | 286 | } |
e114e473 CS |
287 | } |
288 | ||
3518721a | 289 | return 0; |
f7112e6c | 290 | } |
e114e473 | 291 | |
f7112e6c CS |
292 | /** |
293 | * smk_parse_rule - parse Smack rule from load string | |
294 | * @data: string to be parsed whose size is SMK_LOADLEN | |
295 | * @rule: Smack rule | |
296 | * @import: if non-zero, import labels | |
297 | * | |
298 | * Returns 0 on success, -1 on errors. | |
299 | */ | |
300 | static int smk_parse_rule(const char *data, struct smack_rule *rule, int import) | |
301 | { | |
302 | int rc; | |
e114e473 | 303 | |
f7112e6c | 304 | rc = smk_fill_rule(data, data + SMK_LABELLEN, |
3518721a CS |
305 | data + SMK_LABELLEN + SMK_LABELLEN, rule, import, |
306 | SMK_LABELLEN); | |
f7112e6c CS |
307 | return rc; |
308 | } | |
e114e473 | 309 | |
f7112e6c CS |
310 | /** |
311 | * smk_parse_long_rule - parse Smack rule from rule string | |
312 | * @data: string to be parsed, null terminated | |
313 | * @rule: Smack rule | |
314 | * @import: if non-zero, import labels | |
315 | * | |
316 | * Returns 0 on success, -1 on failure | |
317 | */ | |
318 | static int smk_parse_long_rule(const char *data, struct smack_rule *rule, | |
319 | int import) | |
320 | { | |
321 | char *subject; | |
322 | char *object; | |
323 | char *access; | |
324 | int datalen; | |
325 | int rc = -1; | |
5c6d1125 | 326 | |
3b9fc372 | 327 | /* This is inefficient */ |
f7112e6c | 328 | datalen = strlen(data); |
3b9fc372 AC |
329 | |
330 | /* Our first element can be 64 + \0 with no spaces */ | |
331 | subject = kzalloc(datalen + 1, GFP_KERNEL); | |
f7112e6c CS |
332 | if (subject == NULL) |
333 | return -1; | |
334 | object = kzalloc(datalen, GFP_KERNEL); | |
335 | if (object == NULL) | |
336 | goto free_out_s; | |
337 | access = kzalloc(datalen, GFP_KERNEL); | |
338 | if (access == NULL) | |
339 | goto free_out_o; | |
340 | ||
341 | if (sscanf(data, "%s %s %s", subject, object, access) == 3) | |
3518721a | 342 | rc = smk_fill_rule(subject, object, access, rule, import, 0); |
f7112e6c CS |
343 | |
344 | kfree(access); | |
345 | free_out_o: | |
346 | kfree(object); | |
347 | free_out_s: | |
348 | kfree(subject); | |
349 | return rc; | |
828716c2 JS |
350 | } |
351 | ||
f7112e6c CS |
352 | #define SMK_FIXED24_FMT 0 /* Fixed 24byte label format */ |
353 | #define SMK_LONG_FMT 1 /* Variable long label format */ | |
828716c2 | 354 | /** |
f7112e6c | 355 | * smk_write_rules_list - write() for any /smack rule file |
828716c2 JS |
356 | * @file: file pointer, not actually used |
357 | * @buf: where to get the data from | |
358 | * @count: bytes sent | |
359 | * @ppos: where to start - must be 0 | |
360 | * @rule_list: the list of rules to write to | |
361 | * @rule_lock: lock for the rule list | |
f7112e6c | 362 | * @format: /smack/load or /smack/load2 format. |
828716c2 JS |
363 | * |
364 | * Get one smack access rule from above. | |
f7112e6c CS |
365 | * The format for SMK_LONG_FMT is: |
366 | * "subject<whitespace>object<whitespace>access[<whitespace>...]" | |
367 | * The format for SMK_FIXED24_FMT is exactly: | |
368 | * "subject object rwxat" | |
828716c2 | 369 | */ |
f7112e6c CS |
370 | static ssize_t smk_write_rules_list(struct file *file, const char __user *buf, |
371 | size_t count, loff_t *ppos, | |
372 | struct list_head *rule_list, | |
373 | struct mutex *rule_lock, int format) | |
828716c2 | 374 | { |
272cd7a8 CS |
375 | struct smack_master_list *smlp; |
376 | struct smack_known *skp; | |
828716c2 JS |
377 | struct smack_rule *rule; |
378 | char *data; | |
f7112e6c | 379 | int datalen; |
828716c2 | 380 | int rc = -EINVAL; |
272cd7a8 | 381 | int load = 0; |
828716c2 JS |
382 | |
383 | /* | |
384 | * No partial writes. | |
385 | * Enough data must be present. | |
386 | */ | |
387 | if (*ppos != 0) | |
388 | return -EINVAL; | |
828716c2 | 389 | |
f7112e6c CS |
390 | if (format == SMK_FIXED24_FMT) { |
391 | /* | |
392 | * Minor hack for backward compatibility | |
393 | */ | |
394 | if (count != SMK_OLOADLEN && count != SMK_LOADLEN) | |
395 | return -EINVAL; | |
396 | datalen = SMK_LOADLEN; | |
397 | } else | |
398 | datalen = count + 1; | |
399 | ||
400 | data = kzalloc(datalen, GFP_KERNEL); | |
828716c2 JS |
401 | if (data == NULL) |
402 | return -ENOMEM; | |
403 | ||
404 | if (copy_from_user(data, buf, count) != 0) { | |
405 | rc = -EFAULT; | |
406 | goto out; | |
407 | } | |
408 | ||
828716c2 JS |
409 | rule = kzalloc(sizeof(*rule), GFP_KERNEL); |
410 | if (rule == NULL) { | |
411 | rc = -ENOMEM; | |
412 | goto out; | |
413 | } | |
414 | ||
f7112e6c CS |
415 | if (format == SMK_LONG_FMT) { |
416 | /* | |
417 | * Be sure the data string is terminated. | |
418 | */ | |
419 | data[count] = '\0'; | |
420 | if (smk_parse_long_rule(data, rule, 1)) | |
421 | goto out_free_rule; | |
422 | } else { | |
423 | /* | |
424 | * More on the minor hack for backward compatibility | |
425 | */ | |
426 | if (count == (SMK_OLOADLEN)) | |
427 | data[SMK_OLOADLEN] = '-'; | |
428 | if (smk_parse_rule(data, rule, 1)) | |
429 | goto out_free_rule; | |
430 | } | |
431 | ||
828716c2 | 432 | |
272cd7a8 CS |
433 | if (rule_list == NULL) { |
434 | load = 1; | |
435 | skp = smk_find_entry(rule->smk_subject); | |
436 | rule_list = &skp->smk_rules; | |
437 | rule_lock = &skp->smk_rules_lock; | |
438 | } | |
439 | ||
7898e1f8 CS |
440 | rc = count; |
441 | /* | |
f7112e6c | 442 | * If this is a global as opposed to self and a new rule |
40809565 | 443 | * it needs to get added for reporting. |
7898e1f8 CS |
444 | * smk_set_access returns true if there was already a rule |
445 | * for the subject/object pair, and false if it was new. | |
446 | */ | |
f7112e6c CS |
447 | if (!smk_set_access(rule, rule_list, rule_lock)) { |
448 | if (load) { | |
449 | smlp = kzalloc(sizeof(*smlp), GFP_KERNEL); | |
450 | if (smlp != NULL) { | |
451 | smlp->smk_rule = rule; | |
452 | list_add_rcu(&smlp->list, &smack_rule_list); | |
453 | } else | |
454 | rc = -ENOMEM; | |
455 | } | |
7898e1f8 | 456 | goto out; |
272cd7a8 | 457 | } |
e114e473 | 458 | |
7198e2ee EB |
459 | out_free_rule: |
460 | kfree(rule); | |
e114e473 CS |
461 | out: |
462 | kfree(data); | |
463 | return rc; | |
464 | } | |
465 | ||
7898e1f8 | 466 | /* |
40809565 | 467 | * Core logic for smackfs seq list operations. |
7898e1f8 CS |
468 | */ |
469 | ||
40809565 CS |
470 | static void *smk_seq_start(struct seq_file *s, loff_t *pos, |
471 | struct list_head *head) | |
7898e1f8 | 472 | { |
272cd7a8 CS |
473 | struct list_head *list; |
474 | ||
475 | /* | |
476 | * This is 0 the first time through. | |
477 | */ | |
478 | if (s->index == 0) | |
40809565 | 479 | s->private = head; |
272cd7a8 CS |
480 | |
481 | if (s->private == NULL) | |
7898e1f8 | 482 | return NULL; |
272cd7a8 CS |
483 | |
484 | list = s->private; | |
485 | if (list_empty(list)) | |
7898e1f8 | 486 | return NULL; |
272cd7a8 CS |
487 | |
488 | if (s->index == 0) | |
489 | return list->next; | |
490 | return list; | |
7898e1f8 CS |
491 | } |
492 | ||
40809565 CS |
493 | static void *smk_seq_next(struct seq_file *s, void *v, loff_t *pos, |
494 | struct list_head *head) | |
7898e1f8 CS |
495 | { |
496 | struct list_head *list = v; | |
497 | ||
40809565 | 498 | if (list_is_last(list, head)) { |
272cd7a8 | 499 | s->private = NULL; |
7898e1f8 CS |
500 | return NULL; |
501 | } | |
272cd7a8 | 502 | s->private = list->next; |
7898e1f8 CS |
503 | return list->next; |
504 | } | |
505 | ||
40809565 CS |
506 | static void smk_seq_stop(struct seq_file *s, void *v) |
507 | { | |
508 | /* No-op */ | |
509 | } | |
510 | ||
f7112e6c | 511 | static void smk_rule_show(struct seq_file *s, struct smack_rule *srp, int max) |
40809565 | 512 | { |
f7112e6c CS |
513 | /* |
514 | * Don't show any rules with label names too long for | |
515 | * interface file (/smack/load or /smack/load2) | |
516 | * because you should expect to be able to write | |
517 | * anything you read back. | |
518 | */ | |
519 | if (strlen(srp->smk_subject) >= max || strlen(srp->smk_object) >= max) | |
520 | return; | |
7898e1f8 | 521 | |
65ee7f45 RK |
522 | if (srp->smk_access == 0) |
523 | return; | |
524 | ||
f7112e6c | 525 | seq_printf(s, "%s %s", srp->smk_subject, srp->smk_object); |
7898e1f8 CS |
526 | |
527 | seq_putc(s, ' '); | |
528 | ||
529 | if (srp->smk_access & MAY_READ) | |
530 | seq_putc(s, 'r'); | |
531 | if (srp->smk_access & MAY_WRITE) | |
532 | seq_putc(s, 'w'); | |
533 | if (srp->smk_access & MAY_EXEC) | |
534 | seq_putc(s, 'x'); | |
535 | if (srp->smk_access & MAY_APPEND) | |
536 | seq_putc(s, 'a'); | |
537 | if (srp->smk_access & MAY_TRANSMUTE) | |
538 | seq_putc(s, 't'); | |
7898e1f8 CS |
539 | |
540 | seq_putc(s, '\n'); | |
f7112e6c CS |
541 | } |
542 | ||
543 | /* | |
544 | * Seq_file read operations for /smack/load | |
545 | */ | |
546 | ||
547 | static void *load2_seq_start(struct seq_file *s, loff_t *pos) | |
548 | { | |
549 | return smk_seq_start(s, pos, &smack_rule_list); | |
550 | } | |
551 | ||
552 | static void *load2_seq_next(struct seq_file *s, void *v, loff_t *pos) | |
553 | { | |
554 | return smk_seq_next(s, v, pos, &smack_rule_list); | |
555 | } | |
556 | ||
557 | static int load_seq_show(struct seq_file *s, void *v) | |
558 | { | |
559 | struct list_head *list = v; | |
560 | struct smack_master_list *smlp = | |
561 | list_entry(list, struct smack_master_list, list); | |
562 | ||
563 | smk_rule_show(s, smlp->smk_rule, SMK_LABELLEN); | |
7898e1f8 CS |
564 | |
565 | return 0; | |
566 | } | |
567 | ||
7898e1f8 | 568 | static const struct seq_operations load_seq_ops = { |
f7112e6c CS |
569 | .start = load2_seq_start, |
570 | .next = load2_seq_next, | |
7898e1f8 | 571 | .show = load_seq_show, |
40809565 | 572 | .stop = smk_seq_stop, |
7898e1f8 CS |
573 | }; |
574 | ||
575 | /** | |
576 | * smk_open_load - open() for /smack/load | |
577 | * @inode: inode structure representing file | |
578 | * @file: "load" file pointer | |
579 | * | |
580 | * For reading, use load_seq_* seq_file reading operations. | |
581 | */ | |
582 | static int smk_open_load(struct inode *inode, struct file *file) | |
583 | { | |
584 | return seq_open(file, &load_seq_ops); | |
585 | } | |
586 | ||
587 | /** | |
588 | * smk_write_load - write() for /smack/load | |
589 | * @file: file pointer, not actually used | |
590 | * @buf: where to get the data from | |
591 | * @count: bytes sent | |
592 | * @ppos: where to start - must be 0 | |
593 | * | |
594 | */ | |
595 | static ssize_t smk_write_load(struct file *file, const char __user *buf, | |
596 | size_t count, loff_t *ppos) | |
597 | { | |
7898e1f8 CS |
598 | /* |
599 | * Must have privilege. | |
600 | * No partial writes. | |
601 | * Enough data must be present. | |
602 | */ | |
1880eff7 | 603 | if (!smack_privileged(CAP_MAC_ADMIN)) |
7898e1f8 CS |
604 | return -EPERM; |
605 | ||
f7112e6c CS |
606 | return smk_write_rules_list(file, buf, count, ppos, NULL, NULL, |
607 | SMK_FIXED24_FMT); | |
7898e1f8 CS |
608 | } |
609 | ||
e114e473 CS |
610 | static const struct file_operations smk_load_ops = { |
611 | .open = smk_open_load, | |
612 | .read = seq_read, | |
613 | .llseek = seq_lseek, | |
614 | .write = smk_write_load, | |
cb622bbb | 615 | .release = seq_release, |
e114e473 CS |
616 | }; |
617 | ||
618 | /** | |
619 | * smk_cipso_doi - initialize the CIPSO domain | |
620 | */ | |
30aa4faf | 621 | static void smk_cipso_doi(void) |
e114e473 CS |
622 | { |
623 | int rc; | |
624 | struct cipso_v4_doi *doip; | |
6d3dc07c | 625 | struct netlbl_audit nai; |
e114e473 | 626 | |
6d3dc07c | 627 | smk_netlabel_audit_set(&nai); |
4bc87e62 | 628 | |
6d3dc07c | 629 | rc = netlbl_cfg_map_del(NULL, PF_INET, NULL, NULL, &nai); |
e114e473 CS |
630 | if (rc != 0) |
631 | printk(KERN_WARNING "%s:%d remove rc = %d\n", | |
632 | __func__, __LINE__, rc); | |
633 | ||
634 | doip = kmalloc(sizeof(struct cipso_v4_doi), GFP_KERNEL); | |
635 | if (doip == NULL) | |
636 | panic("smack: Failed to initialize cipso DOI.\n"); | |
637 | doip->map.std = NULL; | |
638 | doip->doi = smk_cipso_doi_value; | |
639 | doip->type = CIPSO_V4_MAP_PASS; | |
640 | doip->tags[0] = CIPSO_V4_TAG_RBITMAP; | |
641 | for (rc = 1; rc < CIPSO_V4_TAG_MAXCNT; rc++) | |
642 | doip->tags[rc] = CIPSO_V4_TAG_INVALID; | |
643 | ||
6d3dc07c | 644 | rc = netlbl_cfg_cipsov4_add(doip, &nai); |
b1edeb10 | 645 | if (rc != 0) { |
6c2e8ac0 PM |
646 | printk(KERN_WARNING "%s:%d cipso add rc = %d\n", |
647 | __func__, __LINE__, rc); | |
648 | kfree(doip); | |
649 | return; | |
650 | } | |
6d3dc07c | 651 | rc = netlbl_cfg_cipsov4_map_add(doip->doi, NULL, NULL, NULL, &nai); |
6c2e8ac0 PM |
652 | if (rc != 0) { |
653 | printk(KERN_WARNING "%s:%d map add rc = %d\n", | |
e114e473 | 654 | __func__, __LINE__, rc); |
b1edeb10 | 655 | kfree(doip); |
6c2e8ac0 | 656 | return; |
b1edeb10 | 657 | } |
e114e473 CS |
658 | } |
659 | ||
4bc87e62 CS |
660 | /** |
661 | * smk_unlbl_ambient - initialize the unlabeled domain | |
251a2a95 | 662 | * @oldambient: previous domain string |
4bc87e62 | 663 | */ |
30aa4faf | 664 | static void smk_unlbl_ambient(char *oldambient) |
4bc87e62 CS |
665 | { |
666 | int rc; | |
6d3dc07c | 667 | struct netlbl_audit nai; |
4bc87e62 | 668 | |
6d3dc07c | 669 | smk_netlabel_audit_set(&nai); |
4bc87e62 CS |
670 | |
671 | if (oldambient != NULL) { | |
6d3dc07c | 672 | rc = netlbl_cfg_map_del(oldambient, PF_INET, NULL, NULL, &nai); |
4bc87e62 CS |
673 | if (rc != 0) |
674 | printk(KERN_WARNING "%s:%d remove rc = %d\n", | |
675 | __func__, __LINE__, rc); | |
676 | } | |
f7112e6c CS |
677 | if (smack_net_ambient == NULL) |
678 | smack_net_ambient = smack_known_floor.smk_known; | |
4bc87e62 | 679 | |
6d3dc07c CS |
680 | rc = netlbl_cfg_unlbl_map_add(smack_net_ambient, PF_INET, |
681 | NULL, NULL, &nai); | |
4bc87e62 CS |
682 | if (rc != 0) |
683 | printk(KERN_WARNING "%s:%d add rc = %d\n", | |
684 | __func__, __LINE__, rc); | |
685 | } | |
686 | ||
e114e473 CS |
687 | /* |
688 | * Seq_file read operations for /smack/cipso | |
689 | */ | |
690 | ||
691 | static void *cipso_seq_start(struct seq_file *s, loff_t *pos) | |
692 | { | |
40809565 | 693 | return smk_seq_start(s, pos, &smack_known_list); |
e114e473 CS |
694 | } |
695 | ||
696 | static void *cipso_seq_next(struct seq_file *s, void *v, loff_t *pos) | |
697 | { | |
40809565 | 698 | return smk_seq_next(s, v, pos, &smack_known_list); |
e114e473 CS |
699 | } |
700 | ||
701 | /* | |
702 | * Print cipso labels in format: | |
703 | * label level[/cat[,cat]] | |
704 | */ | |
705 | static int cipso_seq_show(struct seq_file *s, void *v) | |
706 | { | |
7198e2ee EB |
707 | struct list_head *list = v; |
708 | struct smack_known *skp = | |
709 | list_entry(list, struct smack_known, list); | |
f7112e6c | 710 | struct netlbl_lsm_secattr_catmap *cmp = skp->smk_netlabel.attr.mls.cat; |
e114e473 | 711 | char sep = '/'; |
e114e473 | 712 | int i; |
e114e473 | 713 | |
f7112e6c CS |
714 | /* |
715 | * Don't show a label that could not have been set using | |
716 | * /smack/cipso. This is in support of the notion that | |
717 | * anything read from /smack/cipso ought to be writeable | |
718 | * to /smack/cipso. | |
719 | * | |
720 | * /smack/cipso2 should be used instead. | |
721 | */ | |
722 | if (strlen(skp->smk_known) >= SMK_LABELLEN) | |
e114e473 CS |
723 | return 0; |
724 | ||
f7112e6c | 725 | seq_printf(s, "%s %3d", skp->smk_known, skp->smk_netlabel.attr.mls.lvl); |
e114e473 | 726 | |
f7112e6c CS |
727 | for (i = netlbl_secattr_catmap_walk(cmp, 0); i >= 0; |
728 | i = netlbl_secattr_catmap_walk(cmp, i + 1)) { | |
729 | seq_printf(s, "%c%d", sep, i); | |
730 | sep = ','; | |
731 | } | |
e114e473 CS |
732 | |
733 | seq_putc(s, '\n'); | |
734 | ||
735 | return 0; | |
736 | } | |
737 | ||
88e9d34c | 738 | static const struct seq_operations cipso_seq_ops = { |
e114e473 | 739 | .start = cipso_seq_start, |
e114e473 CS |
740 | .next = cipso_seq_next, |
741 | .show = cipso_seq_show, | |
40809565 | 742 | .stop = smk_seq_stop, |
e114e473 CS |
743 | }; |
744 | ||
745 | /** | |
746 | * smk_open_cipso - open() for /smack/cipso | |
747 | * @inode: inode structure representing file | |
748 | * @file: "cipso" file pointer | |
749 | * | |
750 | * Connect our cipso_seq_* operations with /smack/cipso | |
751 | * file_operations | |
752 | */ | |
753 | static int smk_open_cipso(struct inode *inode, struct file *file) | |
754 | { | |
755 | return seq_open(file, &cipso_seq_ops); | |
756 | } | |
757 | ||
758 | /** | |
f7112e6c | 759 | * smk_set_cipso - do the work for write() for cipso and cipso2 |
251a2a95 | 760 | * @file: file pointer, not actually used |
e114e473 CS |
761 | * @buf: where to get the data from |
762 | * @count: bytes sent | |
763 | * @ppos: where to start | |
f7112e6c | 764 | * @format: /smack/cipso or /smack/cipso2 |
e114e473 CS |
765 | * |
766 | * Accepts only one cipso rule per write call. | |
767 | * Returns number of bytes written or error code, as appropriate | |
768 | */ | |
f7112e6c CS |
769 | static ssize_t smk_set_cipso(struct file *file, const char __user *buf, |
770 | size_t count, loff_t *ppos, int format) | |
e114e473 CS |
771 | { |
772 | struct smack_known *skp; | |
f7112e6c CS |
773 | struct netlbl_lsm_secattr ncats; |
774 | char mapcatset[SMK_CIPSOLEN]; | |
e114e473 | 775 | int maplevel; |
f7112e6c | 776 | unsigned int cat; |
e114e473 CS |
777 | int catlen; |
778 | ssize_t rc = -EINVAL; | |
779 | char *data = NULL; | |
780 | char *rule; | |
781 | int ret; | |
782 | int i; | |
783 | ||
784 | /* | |
785 | * Must have privilege. | |
786 | * No partial writes. | |
787 | * Enough data must be present. | |
788 | */ | |
1880eff7 | 789 | if (!smack_privileged(CAP_MAC_ADMIN)) |
e114e473 CS |
790 | return -EPERM; |
791 | if (*ppos != 0) | |
792 | return -EINVAL; | |
f7112e6c CS |
793 | if (format == SMK_FIXED24_FMT && |
794 | (count < SMK_CIPSOMIN || count > SMK_CIPSOMAX)) | |
e114e473 CS |
795 | return -EINVAL; |
796 | ||
797 | data = kzalloc(count + 1, GFP_KERNEL); | |
798 | if (data == NULL) | |
799 | return -ENOMEM; | |
800 | ||
801 | if (copy_from_user(data, buf, count) != 0) { | |
802 | rc = -EFAULT; | |
803 | goto unlockedout; | |
804 | } | |
805 | ||
806 | data[count] = '\0'; | |
807 | rule = data; | |
808 | /* | |
809 | * Only allow one writer at a time. Writes should be | |
810 | * quite rare and small in any case. | |
811 | */ | |
812 | mutex_lock(&smack_cipso_lock); | |
813 | ||
814 | skp = smk_import_entry(rule, 0); | |
815 | if (skp == NULL) | |
816 | goto out; | |
817 | ||
f7112e6c CS |
818 | if (format == SMK_FIXED24_FMT) |
819 | rule += SMK_LABELLEN; | |
820 | else | |
821 | rule += strlen(skp->smk_known); | |
822 | ||
e114e473 CS |
823 | ret = sscanf(rule, "%d", &maplevel); |
824 | if (ret != 1 || maplevel > SMACK_CIPSO_MAXLEVEL) | |
825 | goto out; | |
826 | ||
827 | rule += SMK_DIGITLEN; | |
828 | ret = sscanf(rule, "%d", &catlen); | |
829 | if (ret != 1 || catlen > SMACK_CIPSO_MAXCATNUM) | |
830 | goto out; | |
831 | ||
f7112e6c CS |
832 | if (format == SMK_FIXED24_FMT && |
833 | count != (SMK_CIPSOMIN + catlen * SMK_DIGITLEN)) | |
e114e473 CS |
834 | goto out; |
835 | ||
836 | memset(mapcatset, 0, sizeof(mapcatset)); | |
837 | ||
838 | for (i = 0; i < catlen; i++) { | |
839 | rule += SMK_DIGITLEN; | |
f7112e6c | 840 | ret = sscanf(rule, "%u", &cat); |
e114e473 CS |
841 | if (ret != 1 || cat > SMACK_CIPSO_MAXCATVAL) |
842 | goto out; | |
843 | ||
844 | smack_catset_bit(cat, mapcatset); | |
845 | } | |
846 | ||
f7112e6c CS |
847 | rc = smk_netlbl_mls(maplevel, mapcatset, &ncats, SMK_CIPSOLEN); |
848 | if (rc >= 0) { | |
849 | netlbl_secattr_catmap_free(skp->smk_netlabel.attr.mls.cat); | |
850 | skp->smk_netlabel.attr.mls.cat = ncats.attr.mls.cat; | |
851 | skp->smk_netlabel.attr.mls.lvl = ncats.attr.mls.lvl; | |
852 | rc = count; | |
e114e473 CS |
853 | } |
854 | ||
e114e473 CS |
855 | out: |
856 | mutex_unlock(&smack_cipso_lock); | |
857 | unlockedout: | |
858 | kfree(data); | |
859 | return rc; | |
860 | } | |
861 | ||
f7112e6c CS |
862 | /** |
863 | * smk_write_cipso - write() for /smack/cipso | |
864 | * @file: file pointer, not actually used | |
865 | * @buf: where to get the data from | |
866 | * @count: bytes sent | |
867 | * @ppos: where to start | |
868 | * | |
869 | * Accepts only one cipso rule per write call. | |
870 | * Returns number of bytes written or error code, as appropriate | |
871 | */ | |
872 | static ssize_t smk_write_cipso(struct file *file, const char __user *buf, | |
873 | size_t count, loff_t *ppos) | |
874 | { | |
875 | return smk_set_cipso(file, buf, count, ppos, SMK_FIXED24_FMT); | |
876 | } | |
877 | ||
e114e473 CS |
878 | static const struct file_operations smk_cipso_ops = { |
879 | .open = smk_open_cipso, | |
880 | .read = seq_read, | |
881 | .llseek = seq_lseek, | |
882 | .write = smk_write_cipso, | |
883 | .release = seq_release, | |
884 | }; | |
885 | ||
f7112e6c CS |
886 | /* |
887 | * Seq_file read operations for /smack/cipso2 | |
888 | */ | |
889 | ||
890 | /* | |
891 | * Print cipso labels in format: | |
892 | * label level[/cat[,cat]] | |
893 | */ | |
894 | static int cipso2_seq_show(struct seq_file *s, void *v) | |
895 | { | |
896 | struct list_head *list = v; | |
897 | struct smack_known *skp = | |
898 | list_entry(list, struct smack_known, list); | |
899 | struct netlbl_lsm_secattr_catmap *cmp = skp->smk_netlabel.attr.mls.cat; | |
900 | char sep = '/'; | |
901 | int i; | |
902 | ||
903 | seq_printf(s, "%s %3d", skp->smk_known, skp->smk_netlabel.attr.mls.lvl); | |
904 | ||
905 | for (i = netlbl_secattr_catmap_walk(cmp, 0); i >= 0; | |
906 | i = netlbl_secattr_catmap_walk(cmp, i + 1)) { | |
907 | seq_printf(s, "%c%d", sep, i); | |
908 | sep = ','; | |
909 | } | |
910 | ||
911 | seq_putc(s, '\n'); | |
912 | ||
913 | return 0; | |
914 | } | |
915 | ||
916 | static const struct seq_operations cipso2_seq_ops = { | |
917 | .start = cipso_seq_start, | |
918 | .next = cipso_seq_next, | |
919 | .show = cipso2_seq_show, | |
920 | .stop = smk_seq_stop, | |
921 | }; | |
922 | ||
923 | /** | |
924 | * smk_open_cipso2 - open() for /smack/cipso2 | |
925 | * @inode: inode structure representing file | |
926 | * @file: "cipso2" file pointer | |
927 | * | |
928 | * Connect our cipso_seq_* operations with /smack/cipso2 | |
929 | * file_operations | |
930 | */ | |
931 | static int smk_open_cipso2(struct inode *inode, struct file *file) | |
932 | { | |
933 | return seq_open(file, &cipso2_seq_ops); | |
934 | } | |
935 | ||
936 | /** | |
937 | * smk_write_cipso2 - write() for /smack/cipso2 | |
938 | * @file: file pointer, not actually used | |
939 | * @buf: where to get the data from | |
940 | * @count: bytes sent | |
941 | * @ppos: where to start | |
942 | * | |
943 | * Accepts only one cipso rule per write call. | |
944 | * Returns number of bytes written or error code, as appropriate | |
945 | */ | |
946 | static ssize_t smk_write_cipso2(struct file *file, const char __user *buf, | |
947 | size_t count, loff_t *ppos) | |
948 | { | |
949 | return smk_set_cipso(file, buf, count, ppos, SMK_LONG_FMT); | |
950 | } | |
951 | ||
952 | static const struct file_operations smk_cipso2_ops = { | |
953 | .open = smk_open_cipso2, | |
954 | .read = seq_read, | |
955 | .llseek = seq_lseek, | |
956 | .write = smk_write_cipso2, | |
957 | .release = seq_release, | |
958 | }; | |
959 | ||
6d3dc07c CS |
960 | /* |
961 | * Seq_file read operations for /smack/netlabel | |
962 | */ | |
963 | ||
964 | static void *netlbladdr_seq_start(struct seq_file *s, loff_t *pos) | |
965 | { | |
40809565 | 966 | return smk_seq_start(s, pos, &smk_netlbladdr_list); |
6d3dc07c CS |
967 | } |
968 | ||
969 | static void *netlbladdr_seq_next(struct seq_file *s, void *v, loff_t *pos) | |
970 | { | |
40809565 | 971 | return smk_seq_next(s, v, pos, &smk_netlbladdr_list); |
6d3dc07c | 972 | } |
6d3dc07c CS |
973 | #define BEBITS (sizeof(__be32) * 8) |
974 | ||
975 | /* | |
976 | * Print host/label pairs | |
977 | */ | |
978 | static int netlbladdr_seq_show(struct seq_file *s, void *v) | |
979 | { | |
7198e2ee EB |
980 | struct list_head *list = v; |
981 | struct smk_netlbladdr *skp = | |
982 | list_entry(list, struct smk_netlbladdr, list); | |
6d3dc07c | 983 | unsigned char *hp = (char *) &skp->smk_host.sin_addr.s_addr; |
113a0e45 | 984 | int maskn; |
985 | u32 temp_mask = be32_to_cpu(skp->smk_mask.s_addr); | |
6d3dc07c | 986 | |
113a0e45 | 987 | for (maskn = 0; temp_mask; temp_mask <<= 1, maskn++); |
6d3dc07c CS |
988 | |
989 | seq_printf(s, "%u.%u.%u.%u/%d %s\n", | |
990 | hp[0], hp[1], hp[2], hp[3], maskn, skp->smk_label); | |
991 | ||
992 | return 0; | |
993 | } | |
994 | ||
88e9d34c | 995 | static const struct seq_operations netlbladdr_seq_ops = { |
6d3dc07c | 996 | .start = netlbladdr_seq_start, |
6d3dc07c CS |
997 | .next = netlbladdr_seq_next, |
998 | .show = netlbladdr_seq_show, | |
40809565 | 999 | .stop = smk_seq_stop, |
6d3dc07c CS |
1000 | }; |
1001 | ||
1002 | /** | |
1003 | * smk_open_netlbladdr - open() for /smack/netlabel | |
1004 | * @inode: inode structure representing file | |
1005 | * @file: "netlabel" file pointer | |
1006 | * | |
1007 | * Connect our netlbladdr_seq_* operations with /smack/netlabel | |
1008 | * file_operations | |
1009 | */ | |
1010 | static int smk_open_netlbladdr(struct inode *inode, struct file *file) | |
1011 | { | |
1012 | return seq_open(file, &netlbladdr_seq_ops); | |
1013 | } | |
1014 | ||
113a0e45 | 1015 | /** |
1016 | * smk_netlbladdr_insert | |
1017 | * @new : netlabel to insert | |
1018 | * | |
1019 | * This helper insert netlabel in the smack_netlbladdrs list | |
1020 | * sorted by netmask length (longest to smallest) | |
7198e2ee EB |
1021 | * locked by &smk_netlbladdr_lock in smk_write_netlbladdr |
1022 | * | |
113a0e45 | 1023 | */ |
1024 | static void smk_netlbladdr_insert(struct smk_netlbladdr *new) | |
1025 | { | |
7198e2ee | 1026 | struct smk_netlbladdr *m, *m_next; |
113a0e45 | 1027 | |
7198e2ee EB |
1028 | if (list_empty(&smk_netlbladdr_list)) { |
1029 | list_add_rcu(&new->list, &smk_netlbladdr_list); | |
113a0e45 | 1030 | return; |
1031 | } | |
1032 | ||
05725f7e JP |
1033 | m = list_entry_rcu(smk_netlbladdr_list.next, |
1034 | struct smk_netlbladdr, list); | |
7198e2ee | 1035 | |
113a0e45 | 1036 | /* the comparison '>' is a bit hacky, but works */ |
7198e2ee EB |
1037 | if (new->smk_mask.s_addr > m->smk_mask.s_addr) { |
1038 | list_add_rcu(&new->list, &smk_netlbladdr_list); | |
113a0e45 | 1039 | return; |
1040 | } | |
7198e2ee EB |
1041 | |
1042 | list_for_each_entry_rcu(m, &smk_netlbladdr_list, list) { | |
1043 | if (list_is_last(&m->list, &smk_netlbladdr_list)) { | |
1044 | list_add_rcu(&new->list, &m->list); | |
113a0e45 | 1045 | return; |
1046 | } | |
05725f7e JP |
1047 | m_next = list_entry_rcu(m->list.next, |
1048 | struct smk_netlbladdr, list); | |
7198e2ee EB |
1049 | if (new->smk_mask.s_addr > m_next->smk_mask.s_addr) { |
1050 | list_add_rcu(&new->list, &m->list); | |
113a0e45 | 1051 | return; |
1052 | } | |
1053 | } | |
1054 | } | |
1055 | ||
1056 | ||
6d3dc07c CS |
1057 | /** |
1058 | * smk_write_netlbladdr - write() for /smack/netlabel | |
251a2a95 | 1059 | * @file: file pointer, not actually used |
6d3dc07c CS |
1060 | * @buf: where to get the data from |
1061 | * @count: bytes sent | |
1062 | * @ppos: where to start | |
1063 | * | |
1064 | * Accepts only one netlbladdr per write call. | |
1065 | * Returns number of bytes written or error code, as appropriate | |
1066 | */ | |
1067 | static ssize_t smk_write_netlbladdr(struct file *file, const char __user *buf, | |
1068 | size_t count, loff_t *ppos) | |
1069 | { | |
1070 | struct smk_netlbladdr *skp; | |
1071 | struct sockaddr_in newname; | |
f7112e6c | 1072 | char *smack; |
6d3dc07c | 1073 | char *sp; |
f7112e6c | 1074 | char *data; |
6d3dc07c CS |
1075 | char *host = (char *)&newname.sin_addr.s_addr; |
1076 | int rc; | |
1077 | struct netlbl_audit audit_info; | |
1078 | struct in_addr mask; | |
1079 | unsigned int m; | |
7198e2ee | 1080 | int found; |
113a0e45 | 1081 | u32 mask_bits = (1<<31); |
6d3dc07c | 1082 | __be32 nsa; |
113a0e45 | 1083 | u32 temp_mask; |
6d3dc07c CS |
1084 | |
1085 | /* | |
1086 | * Must have privilege. | |
1087 | * No partial writes. | |
1088 | * Enough data must be present. | |
1089 | * "<addr/mask, as a.b.c.d/e><space><label>" | |
1090 | * "<addr, as a.b.c.d><space><label>" | |
1091 | */ | |
1880eff7 | 1092 | if (!smack_privileged(CAP_MAC_ADMIN)) |
6d3dc07c CS |
1093 | return -EPERM; |
1094 | if (*ppos != 0) | |
1095 | return -EINVAL; | |
f7112e6c | 1096 | if (count < SMK_NETLBLADDRMIN) |
6d3dc07c | 1097 | return -EINVAL; |
f7112e6c CS |
1098 | |
1099 | data = kzalloc(count + 1, GFP_KERNEL); | |
1100 | if (data == NULL) | |
1101 | return -ENOMEM; | |
1102 | ||
1103 | if (copy_from_user(data, buf, count) != 0) { | |
1104 | rc = -EFAULT; | |
1105 | goto free_data_out; | |
1106 | } | |
1107 | ||
1108 | smack = kzalloc(count + 1, GFP_KERNEL); | |
1109 | if (smack == NULL) { | |
1110 | rc = -ENOMEM; | |
1111 | goto free_data_out; | |
1112 | } | |
6d3dc07c CS |
1113 | |
1114 | data[count] = '\0'; | |
1115 | ||
1116 | rc = sscanf(data, "%hhd.%hhd.%hhd.%hhd/%d %s", | |
1117 | &host[0], &host[1], &host[2], &host[3], &m, smack); | |
1118 | if (rc != 6) { | |
1119 | rc = sscanf(data, "%hhd.%hhd.%hhd.%hhd %s", | |
1120 | &host[0], &host[1], &host[2], &host[3], smack); | |
f7112e6c CS |
1121 | if (rc != 5) { |
1122 | rc = -EINVAL; | |
1123 | goto free_out; | |
1124 | } | |
6d3dc07c CS |
1125 | m = BEBITS; |
1126 | } | |
f7112e6c CS |
1127 | if (m > BEBITS) { |
1128 | rc = -EINVAL; | |
1129 | goto free_out; | |
1130 | } | |
6d3dc07c | 1131 | |
f7112e6c CS |
1132 | /* |
1133 | * If smack begins with '-', it is an option, don't import it | |
1134 | */ | |
4303154e EB |
1135 | if (smack[0] != '-') { |
1136 | sp = smk_import(smack, 0); | |
f7112e6c CS |
1137 | if (sp == NULL) { |
1138 | rc = -EINVAL; | |
1139 | goto free_out; | |
1140 | } | |
4303154e EB |
1141 | } else { |
1142 | /* check known options */ | |
1143 | if (strcmp(smack, smack_cipso_option) == 0) | |
1144 | sp = (char *)smack_cipso_option; | |
f7112e6c CS |
1145 | else { |
1146 | rc = -EINVAL; | |
1147 | goto free_out; | |
1148 | } | |
4303154e | 1149 | } |
6d3dc07c | 1150 | |
113a0e45 | 1151 | for (temp_mask = 0; m > 0; m--) { |
1152 | temp_mask |= mask_bits; | |
1153 | mask_bits >>= 1; | |
6d3dc07c | 1154 | } |
113a0e45 | 1155 | mask.s_addr = cpu_to_be32(temp_mask); |
1156 | ||
1157 | newname.sin_addr.s_addr &= mask.s_addr; | |
6d3dc07c CS |
1158 | /* |
1159 | * Only allow one writer at a time. Writes should be | |
1160 | * quite rare and small in any case. | |
1161 | */ | |
1162 | mutex_lock(&smk_netlbladdr_lock); | |
1163 | ||
1164 | nsa = newname.sin_addr.s_addr; | |
113a0e45 | 1165 | /* try to find if the prefix is already in the list */ |
7198e2ee EB |
1166 | found = 0; |
1167 | list_for_each_entry_rcu(skp, &smk_netlbladdr_list, list) { | |
6d3dc07c | 1168 | if (skp->smk_host.sin_addr.s_addr == nsa && |
7198e2ee EB |
1169 | skp->smk_mask.s_addr == mask.s_addr) { |
1170 | found = 1; | |
6d3dc07c | 1171 | break; |
7198e2ee EB |
1172 | } |
1173 | } | |
6d3dc07c CS |
1174 | smk_netlabel_audit_set(&audit_info); |
1175 | ||
7198e2ee | 1176 | if (found == 0) { |
6d3dc07c CS |
1177 | skp = kzalloc(sizeof(*skp), GFP_KERNEL); |
1178 | if (skp == NULL) | |
1179 | rc = -ENOMEM; | |
1180 | else { | |
1181 | rc = 0; | |
1182 | skp->smk_host.sin_addr.s_addr = newname.sin_addr.s_addr; | |
1183 | skp->smk_mask.s_addr = mask.s_addr; | |
6d3dc07c | 1184 | skp->smk_label = sp; |
113a0e45 | 1185 | smk_netlbladdr_insert(skp); |
6d3dc07c CS |
1186 | } |
1187 | } else { | |
4303154e | 1188 | /* we delete the unlabeled entry, only if the previous label |
25985edc | 1189 | * wasn't the special CIPSO option */ |
4303154e EB |
1190 | if (skp->smk_label != smack_cipso_option) |
1191 | rc = netlbl_cfg_unlbl_static_del(&init_net, NULL, | |
1192 | &skp->smk_host.sin_addr, &skp->smk_mask, | |
1193 | PF_INET, &audit_info); | |
1194 | else | |
1195 | rc = 0; | |
6d3dc07c CS |
1196 | skp->smk_label = sp; |
1197 | } | |
1198 | ||
1199 | /* | |
1200 | * Now tell netlabel about the single label nature of | |
1201 | * this host so that incoming packets get labeled. | |
4303154e | 1202 | * but only if we didn't get the special CIPSO option |
6d3dc07c | 1203 | */ |
4303154e | 1204 | if (rc == 0 && sp != smack_cipso_option) |
6d3dc07c CS |
1205 | rc = netlbl_cfg_unlbl_static_add(&init_net, NULL, |
1206 | &skp->smk_host.sin_addr, &skp->smk_mask, PF_INET, | |
1207 | smack_to_secid(skp->smk_label), &audit_info); | |
1208 | ||
1209 | if (rc == 0) | |
1210 | rc = count; | |
1211 | ||
1212 | mutex_unlock(&smk_netlbladdr_lock); | |
1213 | ||
f7112e6c CS |
1214 | free_out: |
1215 | kfree(smack); | |
1216 | free_data_out: | |
1217 | kfree(data); | |
1218 | ||
6d3dc07c CS |
1219 | return rc; |
1220 | } | |
1221 | ||
1222 | static const struct file_operations smk_netlbladdr_ops = { | |
1223 | .open = smk_open_netlbladdr, | |
1224 | .read = seq_read, | |
1225 | .llseek = seq_lseek, | |
1226 | .write = smk_write_netlbladdr, | |
1227 | .release = seq_release, | |
1228 | }; | |
1229 | ||
e114e473 CS |
1230 | /** |
1231 | * smk_read_doi - read() for /smack/doi | |
1232 | * @filp: file pointer, not actually used | |
1233 | * @buf: where to put the result | |
1234 | * @count: maximum to send along | |
1235 | * @ppos: where to start | |
1236 | * | |
1237 | * Returns number of bytes read or error code, as appropriate | |
1238 | */ | |
1239 | static ssize_t smk_read_doi(struct file *filp, char __user *buf, | |
1240 | size_t count, loff_t *ppos) | |
1241 | { | |
1242 | char temp[80]; | |
1243 | ssize_t rc; | |
1244 | ||
1245 | if (*ppos != 0) | |
1246 | return 0; | |
1247 | ||
1248 | sprintf(temp, "%d", smk_cipso_doi_value); | |
1249 | rc = simple_read_from_buffer(buf, count, ppos, temp, strlen(temp)); | |
1250 | ||
1251 | return rc; | |
1252 | } | |
1253 | ||
1254 | /** | |
1255 | * smk_write_doi - write() for /smack/doi | |
251a2a95 | 1256 | * @file: file pointer, not actually used |
e114e473 CS |
1257 | * @buf: where to get the data from |
1258 | * @count: bytes sent | |
1259 | * @ppos: where to start | |
1260 | * | |
1261 | * Returns number of bytes written or error code, as appropriate | |
1262 | */ | |
1263 | static ssize_t smk_write_doi(struct file *file, const char __user *buf, | |
1264 | size_t count, loff_t *ppos) | |
1265 | { | |
1266 | char temp[80]; | |
1267 | int i; | |
1268 | ||
1880eff7 | 1269 | if (!smack_privileged(CAP_MAC_ADMIN)) |
e114e473 CS |
1270 | return -EPERM; |
1271 | ||
1272 | if (count >= sizeof(temp) || count == 0) | |
1273 | return -EINVAL; | |
1274 | ||
1275 | if (copy_from_user(temp, buf, count) != 0) | |
1276 | return -EFAULT; | |
1277 | ||
1278 | temp[count] = '\0'; | |
1279 | ||
1280 | if (sscanf(temp, "%d", &i) != 1) | |
1281 | return -EINVAL; | |
1282 | ||
1283 | smk_cipso_doi_value = i; | |
1284 | ||
1285 | smk_cipso_doi(); | |
1286 | ||
1287 | return count; | |
1288 | } | |
1289 | ||
1290 | static const struct file_operations smk_doi_ops = { | |
1291 | .read = smk_read_doi, | |
1292 | .write = smk_write_doi, | |
6038f373 | 1293 | .llseek = default_llseek, |
e114e473 CS |
1294 | }; |
1295 | ||
1296 | /** | |
1297 | * smk_read_direct - read() for /smack/direct | |
1298 | * @filp: file pointer, not actually used | |
1299 | * @buf: where to put the result | |
1300 | * @count: maximum to send along | |
1301 | * @ppos: where to start | |
1302 | * | |
1303 | * Returns number of bytes read or error code, as appropriate | |
1304 | */ | |
1305 | static ssize_t smk_read_direct(struct file *filp, char __user *buf, | |
1306 | size_t count, loff_t *ppos) | |
1307 | { | |
1308 | char temp[80]; | |
1309 | ssize_t rc; | |
1310 | ||
1311 | if (*ppos != 0) | |
1312 | return 0; | |
1313 | ||
1314 | sprintf(temp, "%d", smack_cipso_direct); | |
1315 | rc = simple_read_from_buffer(buf, count, ppos, temp, strlen(temp)); | |
1316 | ||
1317 | return rc; | |
1318 | } | |
1319 | ||
1320 | /** | |
1321 | * smk_write_direct - write() for /smack/direct | |
251a2a95 | 1322 | * @file: file pointer, not actually used |
e114e473 CS |
1323 | * @buf: where to get the data from |
1324 | * @count: bytes sent | |
1325 | * @ppos: where to start | |
1326 | * | |
1327 | * Returns number of bytes written or error code, as appropriate | |
1328 | */ | |
1329 | static ssize_t smk_write_direct(struct file *file, const char __user *buf, | |
1330 | size_t count, loff_t *ppos) | |
1331 | { | |
f7112e6c | 1332 | struct smack_known *skp; |
e114e473 CS |
1333 | char temp[80]; |
1334 | int i; | |
1335 | ||
1880eff7 | 1336 | if (!smack_privileged(CAP_MAC_ADMIN)) |
e114e473 CS |
1337 | return -EPERM; |
1338 | ||
1339 | if (count >= sizeof(temp) || count == 0) | |
1340 | return -EINVAL; | |
1341 | ||
1342 | if (copy_from_user(temp, buf, count) != 0) | |
1343 | return -EFAULT; | |
1344 | ||
1345 | temp[count] = '\0'; | |
1346 | ||
1347 | if (sscanf(temp, "%d", &i) != 1) | |
1348 | return -EINVAL; | |
1349 | ||
f7112e6c CS |
1350 | /* |
1351 | * Don't do anything if the value hasn't actually changed. | |
1352 | * If it is changing reset the level on entries that were | |
1353 | * set up to be direct when they were created. | |
1354 | */ | |
1355 | if (smack_cipso_direct != i) { | |
1356 | mutex_lock(&smack_known_lock); | |
1357 | list_for_each_entry_rcu(skp, &smack_known_list, list) | |
1358 | if (skp->smk_netlabel.attr.mls.lvl == | |
1359 | smack_cipso_direct) | |
1360 | skp->smk_netlabel.attr.mls.lvl = i; | |
1361 | smack_cipso_direct = i; | |
1362 | mutex_unlock(&smack_known_lock); | |
1363 | } | |
e114e473 CS |
1364 | |
1365 | return count; | |
1366 | } | |
1367 | ||
1368 | static const struct file_operations smk_direct_ops = { | |
1369 | .read = smk_read_direct, | |
1370 | .write = smk_write_direct, | |
6038f373 | 1371 | .llseek = default_llseek, |
e114e473 CS |
1372 | }; |
1373 | ||
f7112e6c CS |
1374 | /** |
1375 | * smk_read_mapped - read() for /smack/mapped | |
1376 | * @filp: file pointer, not actually used | |
1377 | * @buf: where to put the result | |
1378 | * @count: maximum to send along | |
1379 | * @ppos: where to start | |
1380 | * | |
1381 | * Returns number of bytes read or error code, as appropriate | |
1382 | */ | |
1383 | static ssize_t smk_read_mapped(struct file *filp, char __user *buf, | |
1384 | size_t count, loff_t *ppos) | |
1385 | { | |
1386 | char temp[80]; | |
1387 | ssize_t rc; | |
1388 | ||
1389 | if (*ppos != 0) | |
1390 | return 0; | |
1391 | ||
1392 | sprintf(temp, "%d", smack_cipso_mapped); | |
1393 | rc = simple_read_from_buffer(buf, count, ppos, temp, strlen(temp)); | |
1394 | ||
1395 | return rc; | |
1396 | } | |
1397 | ||
1398 | /** | |
1399 | * smk_write_mapped - write() for /smack/mapped | |
1400 | * @file: file pointer, not actually used | |
1401 | * @buf: where to get the data from | |
1402 | * @count: bytes sent | |
1403 | * @ppos: where to start | |
1404 | * | |
1405 | * Returns number of bytes written or error code, as appropriate | |
1406 | */ | |
1407 | static ssize_t smk_write_mapped(struct file *file, const char __user *buf, | |
1408 | size_t count, loff_t *ppos) | |
1409 | { | |
1410 | struct smack_known *skp; | |
1411 | char temp[80]; | |
1412 | int i; | |
1413 | ||
1880eff7 | 1414 | if (!smack_privileged(CAP_MAC_ADMIN)) |
f7112e6c CS |
1415 | return -EPERM; |
1416 | ||
1417 | if (count >= sizeof(temp) || count == 0) | |
1418 | return -EINVAL; | |
1419 | ||
1420 | if (copy_from_user(temp, buf, count) != 0) | |
1421 | return -EFAULT; | |
1422 | ||
1423 | temp[count] = '\0'; | |
1424 | ||
1425 | if (sscanf(temp, "%d", &i) != 1) | |
1426 | return -EINVAL; | |
1427 | ||
1428 | /* | |
1429 | * Don't do anything if the value hasn't actually changed. | |
1430 | * If it is changing reset the level on entries that were | |
1431 | * set up to be mapped when they were created. | |
1432 | */ | |
1433 | if (smack_cipso_mapped != i) { | |
1434 | mutex_lock(&smack_known_lock); | |
1435 | list_for_each_entry_rcu(skp, &smack_known_list, list) | |
1436 | if (skp->smk_netlabel.attr.mls.lvl == | |
1437 | smack_cipso_mapped) | |
1438 | skp->smk_netlabel.attr.mls.lvl = i; | |
1439 | smack_cipso_mapped = i; | |
1440 | mutex_unlock(&smack_known_lock); | |
1441 | } | |
1442 | ||
1443 | return count; | |
1444 | } | |
1445 | ||
1446 | static const struct file_operations smk_mapped_ops = { | |
1447 | .read = smk_read_mapped, | |
1448 | .write = smk_write_mapped, | |
1449 | .llseek = default_llseek, | |
1450 | }; | |
1451 | ||
e114e473 CS |
1452 | /** |
1453 | * smk_read_ambient - read() for /smack/ambient | |
1454 | * @filp: file pointer, not actually used | |
1455 | * @buf: where to put the result | |
1456 | * @cn: maximum to send along | |
1457 | * @ppos: where to start | |
1458 | * | |
1459 | * Returns number of bytes read or error code, as appropriate | |
1460 | */ | |
1461 | static ssize_t smk_read_ambient(struct file *filp, char __user *buf, | |
1462 | size_t cn, loff_t *ppos) | |
1463 | { | |
1464 | ssize_t rc; | |
e114e473 CS |
1465 | int asize; |
1466 | ||
1467 | if (*ppos != 0) | |
1468 | return 0; | |
1469 | /* | |
1470 | * Being careful to avoid a problem in the case where | |
1471 | * smack_net_ambient gets changed in midstream. | |
e114e473 | 1472 | */ |
4bc87e62 | 1473 | mutex_lock(&smack_ambient_lock); |
e114e473 | 1474 | |
4bc87e62 CS |
1475 | asize = strlen(smack_net_ambient) + 1; |
1476 | ||
1477 | if (cn >= asize) | |
1478 | rc = simple_read_from_buffer(buf, cn, ppos, | |
1479 | smack_net_ambient, asize); | |
1480 | else | |
1481 | rc = -EINVAL; | |
e114e473 | 1482 | |
4bc87e62 | 1483 | mutex_unlock(&smack_ambient_lock); |
e114e473 CS |
1484 | |
1485 | return rc; | |
1486 | } | |
1487 | ||
1488 | /** | |
1489 | * smk_write_ambient - write() for /smack/ambient | |
251a2a95 | 1490 | * @file: file pointer, not actually used |
e114e473 CS |
1491 | * @buf: where to get the data from |
1492 | * @count: bytes sent | |
1493 | * @ppos: where to start | |
1494 | * | |
1495 | * Returns number of bytes written or error code, as appropriate | |
1496 | */ | |
1497 | static ssize_t smk_write_ambient(struct file *file, const char __user *buf, | |
1498 | size_t count, loff_t *ppos) | |
1499 | { | |
4bc87e62 | 1500 | char *oldambient; |
f7112e6c CS |
1501 | char *smack = NULL; |
1502 | char *data; | |
1503 | int rc = count; | |
e114e473 | 1504 | |
1880eff7 | 1505 | if (!smack_privileged(CAP_MAC_ADMIN)) |
e114e473 CS |
1506 | return -EPERM; |
1507 | ||
f7112e6c CS |
1508 | data = kzalloc(count + 1, GFP_KERNEL); |
1509 | if (data == NULL) | |
1510 | return -ENOMEM; | |
e114e473 | 1511 | |
f7112e6c CS |
1512 | if (copy_from_user(data, buf, count) != 0) { |
1513 | rc = -EFAULT; | |
1514 | goto out; | |
1515 | } | |
e114e473 | 1516 | |
f7112e6c CS |
1517 | smack = smk_import(data, count); |
1518 | if (smack == NULL) { | |
1519 | rc = -EINVAL; | |
1520 | goto out; | |
1521 | } | |
e114e473 | 1522 | |
4bc87e62 CS |
1523 | mutex_lock(&smack_ambient_lock); |
1524 | ||
1525 | oldambient = smack_net_ambient; | |
e114e473 | 1526 | smack_net_ambient = smack; |
4bc87e62 CS |
1527 | smk_unlbl_ambient(oldambient); |
1528 | ||
1529 | mutex_unlock(&smack_ambient_lock); | |
e114e473 | 1530 | |
f7112e6c CS |
1531 | out: |
1532 | kfree(data); | |
1533 | return rc; | |
e114e473 CS |
1534 | } |
1535 | ||
1536 | static const struct file_operations smk_ambient_ops = { | |
1537 | .read = smk_read_ambient, | |
1538 | .write = smk_write_ambient, | |
6038f373 | 1539 | .llseek = default_llseek, |
e114e473 CS |
1540 | }; |
1541 | ||
15446235 CS |
1542 | /** |
1543 | * smk_read_onlycap - read() for /smack/onlycap | |
1544 | * @filp: file pointer, not actually used | |
1545 | * @buf: where to put the result | |
1546 | * @cn: maximum to send along | |
1547 | * @ppos: where to start | |
1548 | * | |
1549 | * Returns number of bytes read or error code, as appropriate | |
1550 | */ | |
1551 | static ssize_t smk_read_onlycap(struct file *filp, char __user *buf, | |
1552 | size_t cn, loff_t *ppos) | |
1553 | { | |
1554 | char *smack = ""; | |
1555 | ssize_t rc = -EINVAL; | |
1556 | int asize; | |
1557 | ||
1558 | if (*ppos != 0) | |
1559 | return 0; | |
1560 | ||
1561 | if (smack_onlycap != NULL) | |
1562 | smack = smack_onlycap; | |
1563 | ||
1564 | asize = strlen(smack) + 1; | |
1565 | ||
1566 | if (cn >= asize) | |
1567 | rc = simple_read_from_buffer(buf, cn, ppos, smack, asize); | |
1568 | ||
1569 | return rc; | |
1570 | } | |
1571 | ||
1572 | /** | |
1573 | * smk_write_onlycap - write() for /smack/onlycap | |
251a2a95 | 1574 | * @file: file pointer, not actually used |
15446235 CS |
1575 | * @buf: where to get the data from |
1576 | * @count: bytes sent | |
1577 | * @ppos: where to start | |
1578 | * | |
1579 | * Returns number of bytes written or error code, as appropriate | |
1580 | */ | |
1581 | static ssize_t smk_write_onlycap(struct file *file, const char __user *buf, | |
1582 | size_t count, loff_t *ppos) | |
1583 | { | |
f7112e6c | 1584 | char *data; |
676dac4b | 1585 | char *sp = smk_of_task(current->cred->security); |
f7112e6c | 1586 | int rc = count; |
15446235 | 1587 | |
1880eff7 | 1588 | if (!smack_privileged(CAP_MAC_ADMIN)) |
15446235 CS |
1589 | return -EPERM; |
1590 | ||
1591 | /* | |
1592 | * This can be done using smk_access() but is done | |
1593 | * explicitly for clarity. The smk_access() implementation | |
1594 | * would use smk_access(smack_onlycap, MAY_WRITE) | |
1595 | */ | |
1596 | if (smack_onlycap != NULL && smack_onlycap != sp) | |
1597 | return -EPERM; | |
1598 | ||
f7112e6c CS |
1599 | data = kzalloc(count, GFP_KERNEL); |
1600 | if (data == NULL) | |
1601 | return -ENOMEM; | |
15446235 CS |
1602 | |
1603 | /* | |
1604 | * Should the null string be passed in unset the onlycap value. | |
1605 | * This seems like something to be careful with as usually | |
1606 | * smk_import only expects to return NULL for errors. It | |
1607 | * is usually the case that a nullstring or "\n" would be | |
1608 | * bad to pass to smk_import but in fact this is useful here. | |
f7112e6c CS |
1609 | * |
1610 | * smk_import will also reject a label beginning with '-', | |
1611 | * so "-usecapabilities" will also work. | |
15446235 | 1612 | */ |
f7112e6c CS |
1613 | if (copy_from_user(data, buf, count) != 0) |
1614 | rc = -EFAULT; | |
1615 | else | |
1616 | smack_onlycap = smk_import(data, count); | |
15446235 | 1617 | |
f7112e6c CS |
1618 | kfree(data); |
1619 | return rc; | |
15446235 CS |
1620 | } |
1621 | ||
1622 | static const struct file_operations smk_onlycap_ops = { | |
1623 | .read = smk_read_onlycap, | |
1624 | .write = smk_write_onlycap, | |
6038f373 | 1625 | .llseek = default_llseek, |
15446235 CS |
1626 | }; |
1627 | ||
ecfcc53f EB |
1628 | /** |
1629 | * smk_read_logging - read() for /smack/logging | |
1630 | * @filp: file pointer, not actually used | |
1631 | * @buf: where to put the result | |
1632 | * @cn: maximum to send along | |
1633 | * @ppos: where to start | |
1634 | * | |
1635 | * Returns number of bytes read or error code, as appropriate | |
1636 | */ | |
1637 | static ssize_t smk_read_logging(struct file *filp, char __user *buf, | |
1638 | size_t count, loff_t *ppos) | |
1639 | { | |
1640 | char temp[32]; | |
1641 | ssize_t rc; | |
1642 | ||
1643 | if (*ppos != 0) | |
1644 | return 0; | |
1645 | ||
1646 | sprintf(temp, "%d\n", log_policy); | |
1647 | rc = simple_read_from_buffer(buf, count, ppos, temp, strlen(temp)); | |
1648 | return rc; | |
1649 | } | |
1650 | ||
1651 | /** | |
1652 | * smk_write_logging - write() for /smack/logging | |
1653 | * @file: file pointer, not actually used | |
1654 | * @buf: where to get the data from | |
1655 | * @count: bytes sent | |
1656 | * @ppos: where to start | |
1657 | * | |
1658 | * Returns number of bytes written or error code, as appropriate | |
1659 | */ | |
1660 | static ssize_t smk_write_logging(struct file *file, const char __user *buf, | |
1661 | size_t count, loff_t *ppos) | |
1662 | { | |
1663 | char temp[32]; | |
1664 | int i; | |
1665 | ||
1880eff7 | 1666 | if (!smack_privileged(CAP_MAC_ADMIN)) |
ecfcc53f EB |
1667 | return -EPERM; |
1668 | ||
1669 | if (count >= sizeof(temp) || count == 0) | |
1670 | return -EINVAL; | |
1671 | ||
1672 | if (copy_from_user(temp, buf, count) != 0) | |
1673 | return -EFAULT; | |
1674 | ||
1675 | temp[count] = '\0'; | |
1676 | ||
1677 | if (sscanf(temp, "%d", &i) != 1) | |
1678 | return -EINVAL; | |
1679 | if (i < 0 || i > 3) | |
1680 | return -EINVAL; | |
1681 | log_policy = i; | |
1682 | return count; | |
1683 | } | |
1684 | ||
1685 | ||
1686 | ||
1687 | static const struct file_operations smk_logging_ops = { | |
1688 | .read = smk_read_logging, | |
1689 | .write = smk_write_logging, | |
6038f373 | 1690 | .llseek = default_llseek, |
ecfcc53f | 1691 | }; |
7898e1f8 CS |
1692 | |
1693 | /* | |
1694 | * Seq_file read operations for /smack/load-self | |
1695 | */ | |
1696 | ||
1697 | static void *load_self_seq_start(struct seq_file *s, loff_t *pos) | |
1698 | { | |
1699 | struct task_smack *tsp = current_security(); | |
1700 | ||
40809565 | 1701 | return smk_seq_start(s, pos, &tsp->smk_rules); |
7898e1f8 CS |
1702 | } |
1703 | ||
1704 | static void *load_self_seq_next(struct seq_file *s, void *v, loff_t *pos) | |
1705 | { | |
1706 | struct task_smack *tsp = current_security(); | |
7898e1f8 | 1707 | |
40809565 | 1708 | return smk_seq_next(s, v, pos, &tsp->smk_rules); |
7898e1f8 CS |
1709 | } |
1710 | ||
1711 | static int load_self_seq_show(struct seq_file *s, void *v) | |
1712 | { | |
1713 | struct list_head *list = v; | |
1714 | struct smack_rule *srp = | |
1715 | list_entry(list, struct smack_rule, list); | |
1716 | ||
f7112e6c | 1717 | smk_rule_show(s, srp, SMK_LABELLEN); |
7898e1f8 CS |
1718 | |
1719 | return 0; | |
1720 | } | |
1721 | ||
7898e1f8 CS |
1722 | static const struct seq_operations load_self_seq_ops = { |
1723 | .start = load_self_seq_start, | |
1724 | .next = load_self_seq_next, | |
1725 | .show = load_self_seq_show, | |
40809565 | 1726 | .stop = smk_seq_stop, |
7898e1f8 CS |
1727 | }; |
1728 | ||
1729 | ||
1730 | /** | |
f7112e6c | 1731 | * smk_open_load_self - open() for /smack/load-self2 |
7898e1f8 CS |
1732 | * @inode: inode structure representing file |
1733 | * @file: "load" file pointer | |
1734 | * | |
1735 | * For reading, use load_seq_* seq_file reading operations. | |
1736 | */ | |
1737 | static int smk_open_load_self(struct inode *inode, struct file *file) | |
1738 | { | |
1739 | return seq_open(file, &load_self_seq_ops); | |
1740 | } | |
1741 | ||
1742 | /** | |
1743 | * smk_write_load_self - write() for /smack/load-self | |
1744 | * @file: file pointer, not actually used | |
1745 | * @buf: where to get the data from | |
1746 | * @count: bytes sent | |
1747 | * @ppos: where to start - must be 0 | |
1748 | * | |
1749 | */ | |
1750 | static ssize_t smk_write_load_self(struct file *file, const char __user *buf, | |
1751 | size_t count, loff_t *ppos) | |
1752 | { | |
1753 | struct task_smack *tsp = current_security(); | |
1754 | ||
f7112e6c CS |
1755 | return smk_write_rules_list(file, buf, count, ppos, &tsp->smk_rules, |
1756 | &tsp->smk_rules_lock, SMK_FIXED24_FMT); | |
7898e1f8 CS |
1757 | } |
1758 | ||
1759 | static const struct file_operations smk_load_self_ops = { | |
1760 | .open = smk_open_load_self, | |
1761 | .read = seq_read, | |
1762 | .llseek = seq_lseek, | |
1763 | .write = smk_write_load_self, | |
1764 | .release = seq_release, | |
1765 | }; | |
828716c2 JS |
1766 | |
1767 | /** | |
f7112e6c | 1768 | * smk_user_access - handle access check transaction |
828716c2 JS |
1769 | * @file: file pointer |
1770 | * @buf: data from user space | |
1771 | * @count: bytes sent | |
1772 | * @ppos: where to start - must be 0 | |
1773 | */ | |
f7112e6c CS |
1774 | static ssize_t smk_user_access(struct file *file, const char __user *buf, |
1775 | size_t count, loff_t *ppos, int format) | |
828716c2 JS |
1776 | { |
1777 | struct smack_rule rule; | |
1778 | char *data; | |
f7112e6c | 1779 | char *cod; |
f8859d98 | 1780 | int res; |
828716c2 | 1781 | |
828716c2 JS |
1782 | data = simple_transaction_get(file, buf, count); |
1783 | if (IS_ERR(data)) | |
1784 | return PTR_ERR(data); | |
1785 | ||
f7112e6c CS |
1786 | if (format == SMK_FIXED24_FMT) { |
1787 | if (count < SMK_LOADLEN) | |
1788 | return -EINVAL; | |
1789 | res = smk_parse_rule(data, &rule, 0); | |
1790 | } else { | |
1791 | /* | |
1792 | * Copy the data to make sure the string is terminated. | |
1793 | */ | |
1794 | cod = kzalloc(count + 1, GFP_KERNEL); | |
1795 | if (cod == NULL) | |
1796 | return -ENOMEM; | |
1797 | memcpy(cod, data, count); | |
1798 | cod[count] = '\0'; | |
1799 | res = smk_parse_long_rule(cod, &rule, 0); | |
1800 | kfree(cod); | |
1801 | } | |
1802 | ||
1803 | if (res) | |
828716c2 JS |
1804 | return -EINVAL; |
1805 | ||
f8859d98 JS |
1806 | res = smk_access(rule.smk_subject, rule.smk_object, rule.smk_access, |
1807 | NULL); | |
1808 | data[0] = res == 0 ? '1' : '0'; | |
1809 | data[1] = '\0'; | |
828716c2 | 1810 | |
d86b2b61 | 1811 | simple_transaction_set(file, 2); |
f7112e6c CS |
1812 | |
1813 | if (format == SMK_FIXED24_FMT) | |
1814 | return SMK_LOADLEN; | |
1815 | return count; | |
1816 | } | |
1817 | ||
1818 | /** | |
1819 | * smk_write_access - handle access check transaction | |
1820 | * @file: file pointer | |
1821 | * @buf: data from user space | |
1822 | * @count: bytes sent | |
1823 | * @ppos: where to start - must be 0 | |
1824 | */ | |
1825 | static ssize_t smk_write_access(struct file *file, const char __user *buf, | |
1826 | size_t count, loff_t *ppos) | |
1827 | { | |
1828 | return smk_user_access(file, buf, count, ppos, SMK_FIXED24_FMT); | |
828716c2 JS |
1829 | } |
1830 | ||
1831 | static const struct file_operations smk_access_ops = { | |
1832 | .write = smk_write_access, | |
1833 | .read = simple_transaction_read, | |
1834 | .release = simple_transaction_release, | |
1835 | .llseek = generic_file_llseek, | |
1836 | }; | |
1837 | ||
f7112e6c CS |
1838 | |
1839 | /* | |
1840 | * Seq_file read operations for /smack/load2 | |
1841 | */ | |
1842 | ||
1843 | static int load2_seq_show(struct seq_file *s, void *v) | |
1844 | { | |
1845 | struct list_head *list = v; | |
1846 | struct smack_master_list *smlp = | |
1847 | list_entry(list, struct smack_master_list, list); | |
1848 | ||
1849 | smk_rule_show(s, smlp->smk_rule, SMK_LONGLABEL); | |
1850 | ||
1851 | return 0; | |
1852 | } | |
1853 | ||
1854 | static const struct seq_operations load2_seq_ops = { | |
1855 | .start = load2_seq_start, | |
1856 | .next = load2_seq_next, | |
1857 | .show = load2_seq_show, | |
1858 | .stop = smk_seq_stop, | |
1859 | }; | |
1860 | ||
1861 | /** | |
1862 | * smk_open_load2 - open() for /smack/load2 | |
1863 | * @inode: inode structure representing file | |
1864 | * @file: "load2" file pointer | |
1865 | * | |
1866 | * For reading, use load2_seq_* seq_file reading operations. | |
1867 | */ | |
1868 | static int smk_open_load2(struct inode *inode, struct file *file) | |
1869 | { | |
1870 | return seq_open(file, &load2_seq_ops); | |
1871 | } | |
1872 | ||
1873 | /** | |
1874 | * smk_write_load2 - write() for /smack/load2 | |
1875 | * @file: file pointer, not actually used | |
1876 | * @buf: where to get the data from | |
1877 | * @count: bytes sent | |
1878 | * @ppos: where to start - must be 0 | |
1879 | * | |
1880 | */ | |
1881 | static ssize_t smk_write_load2(struct file *file, const char __user *buf, | |
1882 | size_t count, loff_t *ppos) | |
1883 | { | |
1884 | /* | |
1885 | * Must have privilege. | |
1886 | */ | |
1880eff7 | 1887 | if (!smack_privileged(CAP_MAC_ADMIN)) |
f7112e6c CS |
1888 | return -EPERM; |
1889 | ||
1890 | return smk_write_rules_list(file, buf, count, ppos, NULL, NULL, | |
1891 | SMK_LONG_FMT); | |
1892 | } | |
1893 | ||
1894 | static const struct file_operations smk_load2_ops = { | |
1895 | .open = smk_open_load2, | |
1896 | .read = seq_read, | |
1897 | .llseek = seq_lseek, | |
1898 | .write = smk_write_load2, | |
1899 | .release = seq_release, | |
1900 | }; | |
1901 | ||
1902 | /* | |
1903 | * Seq_file read operations for /smack/load-self2 | |
1904 | */ | |
1905 | ||
1906 | static void *load_self2_seq_start(struct seq_file *s, loff_t *pos) | |
1907 | { | |
1908 | struct task_smack *tsp = current_security(); | |
1909 | ||
1910 | return smk_seq_start(s, pos, &tsp->smk_rules); | |
1911 | } | |
1912 | ||
1913 | static void *load_self2_seq_next(struct seq_file *s, void *v, loff_t *pos) | |
1914 | { | |
1915 | struct task_smack *tsp = current_security(); | |
1916 | ||
1917 | return smk_seq_next(s, v, pos, &tsp->smk_rules); | |
1918 | } | |
1919 | ||
1920 | static int load_self2_seq_show(struct seq_file *s, void *v) | |
1921 | { | |
1922 | struct list_head *list = v; | |
1923 | struct smack_rule *srp = | |
1924 | list_entry(list, struct smack_rule, list); | |
1925 | ||
1926 | smk_rule_show(s, srp, SMK_LONGLABEL); | |
1927 | ||
1928 | return 0; | |
1929 | } | |
1930 | ||
1931 | static const struct seq_operations load_self2_seq_ops = { | |
1932 | .start = load_self2_seq_start, | |
1933 | .next = load_self2_seq_next, | |
1934 | .show = load_self2_seq_show, | |
1935 | .stop = smk_seq_stop, | |
1936 | }; | |
1937 | ||
1938 | /** | |
1939 | * smk_open_load_self2 - open() for /smack/load-self2 | |
1940 | * @inode: inode structure representing file | |
1941 | * @file: "load" file pointer | |
1942 | * | |
1943 | * For reading, use load_seq_* seq_file reading operations. | |
1944 | */ | |
1945 | static int smk_open_load_self2(struct inode *inode, struct file *file) | |
1946 | { | |
1947 | return seq_open(file, &load_self2_seq_ops); | |
1948 | } | |
1949 | ||
1950 | /** | |
1951 | * smk_write_load_self2 - write() for /smack/load-self2 | |
1952 | * @file: file pointer, not actually used | |
1953 | * @buf: where to get the data from | |
1954 | * @count: bytes sent | |
1955 | * @ppos: where to start - must be 0 | |
1956 | * | |
1957 | */ | |
1958 | static ssize_t smk_write_load_self2(struct file *file, const char __user *buf, | |
1959 | size_t count, loff_t *ppos) | |
1960 | { | |
1961 | struct task_smack *tsp = current_security(); | |
1962 | ||
1963 | return smk_write_rules_list(file, buf, count, ppos, &tsp->smk_rules, | |
1964 | &tsp->smk_rules_lock, SMK_LONG_FMT); | |
1965 | } | |
1966 | ||
1967 | static const struct file_operations smk_load_self2_ops = { | |
1968 | .open = smk_open_load_self2, | |
1969 | .read = seq_read, | |
1970 | .llseek = seq_lseek, | |
1971 | .write = smk_write_load_self2, | |
1972 | .release = seq_release, | |
1973 | }; | |
1974 | ||
1975 | /** | |
1976 | * smk_write_access2 - handle access check transaction | |
1977 | * @file: file pointer | |
1978 | * @buf: data from user space | |
1979 | * @count: bytes sent | |
1980 | * @ppos: where to start - must be 0 | |
1981 | */ | |
1982 | static ssize_t smk_write_access2(struct file *file, const char __user *buf, | |
1983 | size_t count, loff_t *ppos) | |
1984 | { | |
1985 | return smk_user_access(file, buf, count, ppos, SMK_LONG_FMT); | |
1986 | } | |
1987 | ||
1988 | static const struct file_operations smk_access2_ops = { | |
1989 | .write = smk_write_access2, | |
1990 | .read = simple_transaction_read, | |
1991 | .release = simple_transaction_release, | |
1992 | .llseek = generic_file_llseek, | |
1993 | }; | |
1994 | ||
449543b0 RK |
1995 | /** |
1996 | * smk_write_revoke_subj - write() for /smack/revoke-subject | |
1997 | * @file: file pointer | |
1998 | * @buf: data from user space | |
1999 | * @count: bytes sent | |
2000 | * @ppos: where to start - must be 0 | |
2001 | */ | |
2002 | static ssize_t smk_write_revoke_subj(struct file *file, const char __user *buf, | |
2003 | size_t count, loff_t *ppos) | |
2004 | { | |
2005 | char *data = NULL; | |
2006 | const char *cp = NULL; | |
2007 | struct smack_known *skp; | |
2008 | struct smack_rule *sp; | |
2009 | struct list_head *rule_list; | |
2010 | struct mutex *rule_lock; | |
2011 | int rc = count; | |
2012 | ||
2013 | if (*ppos != 0) | |
2014 | return -EINVAL; | |
2015 | ||
2016 | if (!smack_privileged(CAP_MAC_ADMIN)) | |
2017 | return -EPERM; | |
2018 | ||
2019 | if (count == 0 || count > SMK_LONGLABEL) | |
2020 | return -EINVAL; | |
2021 | ||
2022 | data = kzalloc(count, GFP_KERNEL); | |
2023 | if (data == NULL) | |
2024 | return -ENOMEM; | |
2025 | ||
2026 | if (copy_from_user(data, buf, count) != 0) { | |
2027 | rc = -EFAULT; | |
2028 | goto free_out; | |
2029 | } | |
2030 | ||
2031 | cp = smk_parse_smack(data, count); | |
2032 | if (cp == NULL) { | |
2033 | rc = -EINVAL; | |
2034 | goto free_out; | |
2035 | } | |
2036 | ||
2037 | skp = smk_find_entry(cp); | |
2038 | if (skp == NULL) { | |
2039 | rc = -EINVAL; | |
2040 | goto free_out; | |
2041 | } | |
2042 | ||
2043 | rule_list = &skp->smk_rules; | |
2044 | rule_lock = &skp->smk_rules_lock; | |
2045 | ||
2046 | mutex_lock(rule_lock); | |
2047 | ||
2048 | list_for_each_entry_rcu(sp, rule_list, list) | |
2049 | sp->smk_access = 0; | |
2050 | ||
2051 | mutex_unlock(rule_lock); | |
2052 | ||
2053 | free_out: | |
2054 | kfree(data); | |
2055 | kfree(cp); | |
2056 | return rc; | |
2057 | } | |
2058 | ||
2059 | static const struct file_operations smk_revoke_subj_ops = { | |
2060 | .write = smk_write_revoke_subj, | |
2061 | .read = simple_transaction_read, | |
2062 | .release = simple_transaction_release, | |
2063 | .llseek = generic_file_llseek, | |
2064 | }; | |
2065 | ||
e114e473 CS |
2066 | /** |
2067 | * smk_fill_super - fill the /smackfs superblock | |
2068 | * @sb: the empty superblock | |
2069 | * @data: unused | |
2070 | * @silent: unused | |
2071 | * | |
2072 | * Fill in the well known entries for /smack | |
2073 | * | |
2074 | * Returns 0 on success, an error code on failure | |
2075 | */ | |
2076 | static int smk_fill_super(struct super_block *sb, void *data, int silent) | |
2077 | { | |
2078 | int rc; | |
2079 | struct inode *root_inode; | |
2080 | ||
2081 | static struct tree_descr smack_files[] = { | |
7898e1f8 CS |
2082 | [SMK_LOAD] = { |
2083 | "load", &smk_load_ops, S_IRUGO|S_IWUSR}, | |
2084 | [SMK_CIPSO] = { | |
2085 | "cipso", &smk_cipso_ops, S_IRUGO|S_IWUSR}, | |
2086 | [SMK_DOI] = { | |
2087 | "doi", &smk_doi_ops, S_IRUGO|S_IWUSR}, | |
2088 | [SMK_DIRECT] = { | |
2089 | "direct", &smk_direct_ops, S_IRUGO|S_IWUSR}, | |
2090 | [SMK_AMBIENT] = { | |
2091 | "ambient", &smk_ambient_ops, S_IRUGO|S_IWUSR}, | |
2092 | [SMK_NETLBLADDR] = { | |
2093 | "netlabel", &smk_netlbladdr_ops, S_IRUGO|S_IWUSR}, | |
2094 | [SMK_ONLYCAP] = { | |
2095 | "onlycap", &smk_onlycap_ops, S_IRUGO|S_IWUSR}, | |
2096 | [SMK_LOGGING] = { | |
2097 | "logging", &smk_logging_ops, S_IRUGO|S_IWUSR}, | |
2098 | [SMK_LOAD_SELF] = { | |
2099 | "load-self", &smk_load_self_ops, S_IRUGO|S_IWUGO}, | |
828716c2 | 2100 | [SMK_ACCESSES] = { |
0e94ae17 | 2101 | "access", &smk_access_ops, S_IRUGO|S_IWUGO}, |
f7112e6c CS |
2102 | [SMK_MAPPED] = { |
2103 | "mapped", &smk_mapped_ops, S_IRUGO|S_IWUSR}, | |
2104 | [SMK_LOAD2] = { | |
2105 | "load2", &smk_load2_ops, S_IRUGO|S_IWUSR}, | |
2106 | [SMK_LOAD_SELF2] = { | |
2107 | "load-self2", &smk_load_self2_ops, S_IRUGO|S_IWUGO}, | |
2108 | [SMK_ACCESS2] = { | |
2109 | "access2", &smk_access2_ops, S_IRUGO|S_IWUGO}, | |
2110 | [SMK_CIPSO2] = { | |
2111 | "cipso2", &smk_cipso2_ops, S_IRUGO|S_IWUSR}, | |
449543b0 RK |
2112 | [SMK_REVOKE_SUBJ] = { |
2113 | "revoke-subject", &smk_revoke_subj_ops, | |
2114 | S_IRUGO|S_IWUSR}, | |
7898e1f8 CS |
2115 | /* last one */ |
2116 | {""} | |
e114e473 CS |
2117 | }; |
2118 | ||
2119 | rc = simple_fill_super(sb, SMACK_MAGIC, smack_files); | |
2120 | if (rc != 0) { | |
2121 | printk(KERN_ERR "%s failed %d while creating inodes\n", | |
2122 | __func__, rc); | |
2123 | return rc; | |
2124 | } | |
2125 | ||
2126 | root_inode = sb->s_root->d_inode; | |
e114e473 CS |
2127 | |
2128 | return 0; | |
2129 | } | |
2130 | ||
2131 | /** | |
fc14f2fe | 2132 | * smk_mount - get the smackfs superblock |
e114e473 CS |
2133 | * @fs_type: passed along without comment |
2134 | * @flags: passed along without comment | |
2135 | * @dev_name: passed along without comment | |
2136 | * @data: passed along without comment | |
e114e473 CS |
2137 | * |
2138 | * Just passes everything along. | |
2139 | * | |
2140 | * Returns what the lower level code does. | |
2141 | */ | |
fc14f2fe AV |
2142 | static struct dentry *smk_mount(struct file_system_type *fs_type, |
2143 | int flags, const char *dev_name, void *data) | |
e114e473 | 2144 | { |
fc14f2fe | 2145 | return mount_single(fs_type, flags, data, smk_fill_super); |
e114e473 CS |
2146 | } |
2147 | ||
2148 | static struct file_system_type smk_fs_type = { | |
2149 | .name = "smackfs", | |
fc14f2fe | 2150 | .mount = smk_mount, |
e114e473 CS |
2151 | .kill_sb = kill_litter_super, |
2152 | }; | |
2153 | ||
2154 | static struct vfsmount *smackfs_mount; | |
2155 | ||
f7112e6c CS |
2156 | static int __init smk_preset_netlabel(struct smack_known *skp) |
2157 | { | |
2158 | skp->smk_netlabel.domain = skp->smk_known; | |
2159 | skp->smk_netlabel.flags = | |
2160 | NETLBL_SECATTR_DOMAIN | NETLBL_SECATTR_MLS_LVL; | |
2161 | return smk_netlbl_mls(smack_cipso_direct, skp->smk_known, | |
2162 | &skp->smk_netlabel, strlen(skp->smk_known)); | |
2163 | } | |
2164 | ||
e114e473 CS |
2165 | /** |
2166 | * init_smk_fs - get the smackfs superblock | |
2167 | * | |
2168 | * register the smackfs | |
2169 | * | |
076c54c5 AD |
2170 | * Do not register smackfs if Smack wasn't enabled |
2171 | * on boot. We can not put this method normally under the | |
2172 | * smack_init() code path since the security subsystem get | |
2173 | * initialized before the vfs caches. | |
2174 | * | |
2175 | * Returns true if we were not chosen on boot or if | |
2176 | * we were chosen and filesystem registration succeeded. | |
e114e473 CS |
2177 | */ |
2178 | static int __init init_smk_fs(void) | |
2179 | { | |
2180 | int err; | |
f7112e6c | 2181 | int rc; |
e114e473 | 2182 | |
076c54c5 AD |
2183 | if (!security_module_enable(&smack_ops)) |
2184 | return 0; | |
2185 | ||
e114e473 CS |
2186 | err = register_filesystem(&smk_fs_type); |
2187 | if (!err) { | |
2188 | smackfs_mount = kern_mount(&smk_fs_type); | |
2189 | if (IS_ERR(smackfs_mount)) { | |
2190 | printk(KERN_ERR "smackfs: could not mount!\n"); | |
2191 | err = PTR_ERR(smackfs_mount); | |
2192 | smackfs_mount = NULL; | |
2193 | } | |
2194 | } | |
2195 | ||
e114e473 | 2196 | smk_cipso_doi(); |
4bc87e62 | 2197 | smk_unlbl_ambient(NULL); |
e114e473 | 2198 | |
f7112e6c CS |
2199 | rc = smk_preset_netlabel(&smack_known_floor); |
2200 | if (err == 0 && rc < 0) | |
2201 | err = rc; | |
2202 | rc = smk_preset_netlabel(&smack_known_hat); | |
2203 | if (err == 0 && rc < 0) | |
2204 | err = rc; | |
2205 | rc = smk_preset_netlabel(&smack_known_huh); | |
2206 | if (err == 0 && rc < 0) | |
2207 | err = rc; | |
2208 | rc = smk_preset_netlabel(&smack_known_invalid); | |
2209 | if (err == 0 && rc < 0) | |
2210 | err = rc; | |
2211 | rc = smk_preset_netlabel(&smack_known_star); | |
2212 | if (err == 0 && rc < 0) | |
2213 | err = rc; | |
2214 | rc = smk_preset_netlabel(&smack_known_web); | |
2215 | if (err == 0 && rc < 0) | |
2216 | err = rc; | |
2217 | ||
e114e473 CS |
2218 | return err; |
2219 | } | |
2220 | ||
2221 | __initcall(init_smk_fs); |