Commit | Line | Data |
---|---|---|
26a2a1c9 KT |
1 | /* |
2 | * security/tomoyo/domain.c | |
3 | * | |
c3ef1500 | 4 | * Domain transition functions for TOMOYO. |
26a2a1c9 | 5 | * |
c3ef1500 | 6 | * Copyright (C) 2005-2010 NTT DATA CORPORATION |
26a2a1c9 KT |
7 | */ |
8 | ||
9 | #include "common.h" | |
26a2a1c9 | 10 | #include <linux/binfmts.h> |
5a0e3ad6 | 11 | #include <linux/slab.h> |
26a2a1c9 KT |
12 | |
13 | /* Variables definitions.*/ | |
14 | ||
15 | /* The initial domain. */ | |
16 | struct tomoyo_domain_info tomoyo_kernel_domain; | |
17 | ||
36f5e1ff TH |
18 | /** |
19 | * tomoyo_update_policy - Update an entry for exception policy. | |
20 | * | |
21 | * @new_entry: Pointer to "struct tomoyo_acl_info". | |
22 | * @size: Size of @new_entry in bytes. | |
23 | * @is_delete: True if it is a delete request. | |
24 | * @list: Pointer to "struct list_head". | |
25 | * @check_duplicate: Callback function to find duplicated entry. | |
26 | * | |
27 | * Returns 0 on success, negative value otherwise. | |
28 | * | |
29 | * Caller holds tomoyo_read_lock(). | |
30 | */ | |
31 | int tomoyo_update_policy(struct tomoyo_acl_head *new_entry, const int size, | |
32 | bool is_delete, struct list_head *list, | |
33 | bool (*check_duplicate) (const struct tomoyo_acl_head | |
34 | *, | |
35 | const struct tomoyo_acl_head | |
36 | *)) | |
37 | { | |
38 | int error = is_delete ? -ENOENT : -ENOMEM; | |
39 | struct tomoyo_acl_head *entry; | |
40 | ||
41 | if (mutex_lock_interruptible(&tomoyo_policy_lock)) | |
42 | return -ENOMEM; | |
43 | list_for_each_entry_rcu(entry, list, list) { | |
44 | if (!check_duplicate(entry, new_entry)) | |
45 | continue; | |
46 | entry->is_deleted = is_delete; | |
47 | error = 0; | |
48 | break; | |
49 | } | |
50 | if (error && !is_delete) { | |
51 | entry = tomoyo_commit_ok(new_entry, size); | |
52 | if (entry) { | |
53 | list_add_tail_rcu(&entry->list, list); | |
54 | error = 0; | |
55 | } | |
56 | } | |
57 | mutex_unlock(&tomoyo_policy_lock); | |
58 | return error; | |
59 | } | |
60 | ||
237ab459 TH |
61 | /** |
62 | * tomoyo_update_domain - Update an entry for domain policy. | |
63 | * | |
64 | * @new_entry: Pointer to "struct tomoyo_acl_info". | |
65 | * @size: Size of @new_entry in bytes. | |
66 | * @is_delete: True if it is a delete request. | |
67 | * @domain: Pointer to "struct tomoyo_domain_info". | |
68 | * @check_duplicate: Callback function to find duplicated entry. | |
69 | * @merge_duplicate: Callback function to merge duplicated entry. | |
70 | * | |
71 | * Returns 0 on success, negative value otherwise. | |
72 | * | |
73 | * Caller holds tomoyo_read_lock(). | |
74 | */ | |
75 | int tomoyo_update_domain(struct tomoyo_acl_info *new_entry, const int size, | |
76 | bool is_delete, struct tomoyo_domain_info *domain, | |
77 | bool (*check_duplicate) (const struct tomoyo_acl_info | |
78 | *, | |
79 | const struct tomoyo_acl_info | |
80 | *), | |
81 | bool (*merge_duplicate) (struct tomoyo_acl_info *, | |
82 | struct tomoyo_acl_info *, | |
83 | const bool)) | |
84 | { | |
85 | int error = is_delete ? -ENOENT : -ENOMEM; | |
86 | struct tomoyo_acl_info *entry; | |
87 | ||
88 | if (mutex_lock_interruptible(&tomoyo_policy_lock)) | |
89 | return error; | |
90 | list_for_each_entry_rcu(entry, &domain->acl_info_list, list) { | |
91 | if (!check_duplicate(entry, new_entry)) | |
92 | continue; | |
93 | if (merge_duplicate) | |
94 | entry->is_deleted = merge_duplicate(entry, new_entry, | |
95 | is_delete); | |
96 | else | |
97 | entry->is_deleted = is_delete; | |
98 | error = 0; | |
99 | break; | |
100 | } | |
101 | if (error && !is_delete) { | |
102 | entry = tomoyo_commit_ok(new_entry, size); | |
103 | if (entry) { | |
104 | list_add_tail_rcu(&entry->list, &domain->acl_info_list); | |
105 | error = 0; | |
106 | } | |
107 | } | |
108 | mutex_unlock(&tomoyo_policy_lock); | |
109 | return error; | |
110 | } | |
111 | ||
c3fa109a TH |
112 | /* |
113 | * tomoyo_domain_list is used for holding list of domains. | |
114 | * The ->acl_info_list of "struct tomoyo_domain_info" is used for holding | |
115 | * permissions (e.g. "allow_read /lib/libc-2.5.so") given to each domain. | |
116 | * | |
117 | * An entry is added by | |
118 | * | |
119 | * # ( echo "<kernel>"; echo "allow_execute /sbin/init" ) > \ | |
120 | * /sys/kernel/security/tomoyo/domain_policy | |
121 | * | |
122 | * and is deleted by | |
123 | * | |
124 | * # ( echo "<kernel>"; echo "delete allow_execute /sbin/init" ) > \ | |
125 | * /sys/kernel/security/tomoyo/domain_policy | |
126 | * | |
127 | * and all entries are retrieved by | |
128 | * | |
129 | * # cat /sys/kernel/security/tomoyo/domain_policy | |
130 | * | |
131 | * A domain is added by | |
132 | * | |
133 | * # echo "<kernel>" > /sys/kernel/security/tomoyo/domain_policy | |
134 | * | |
135 | * and is deleted by | |
136 | * | |
137 | * # echo "delete <kernel>" > /sys/kernel/security/tomoyo/domain_policy | |
138 | * | |
139 | * and all domains are retrieved by | |
140 | * | |
141 | * # grep '^<kernel>' /sys/kernel/security/tomoyo/domain_policy | |
142 | * | |
143 | * Normally, a domainname is monotonically getting longer because a domainname | |
144 | * which the process will belong to if an execve() operation succeeds is | |
145 | * defined as a concatenation of "current domainname" + "pathname passed to | |
146 | * execve()". | |
147 | * See tomoyo_domain_initializer_list and tomoyo_domain_keeper_list for | |
148 | * exceptions. | |
149 | */ | |
26a2a1c9 | 150 | LIST_HEAD(tomoyo_domain_list); |
26a2a1c9 | 151 | |
26a2a1c9 KT |
152 | /** |
153 | * tomoyo_get_last_name - Get last component of a domainname. | |
154 | * | |
155 | * @domain: Pointer to "struct tomoyo_domain_info". | |
156 | * | |
157 | * Returns the last component of the domainname. | |
158 | */ | |
159 | const char *tomoyo_get_last_name(const struct tomoyo_domain_info *domain) | |
160 | { | |
161 | const char *cp0 = domain->domainname->name; | |
162 | const char *cp1 = strrchr(cp0, ' '); | |
163 | ||
164 | if (cp1) | |
165 | return cp1 + 1; | |
166 | return cp0; | |
167 | } | |
168 | ||
c3fa109a TH |
169 | /* |
170 | * tomoyo_domain_initializer_list is used for holding list of programs which | |
171 | * triggers reinitialization of domainname. Normally, a domainname is | |
172 | * monotonically getting longer. But sometimes, we restart daemon programs. | |
173 | * It would be convenient for us that "a daemon started upon system boot" and | |
174 | * "the daemon restarted from console" belong to the same domain. Thus, TOMOYO | |
175 | * provides a way to shorten domainnames. | |
176 | * | |
177 | * An entry is added by | |
178 | * | |
179 | * # echo 'initialize_domain /usr/sbin/httpd' > \ | |
180 | * /sys/kernel/security/tomoyo/exception_policy | |
181 | * | |
182 | * and is deleted by | |
183 | * | |
184 | * # echo 'delete initialize_domain /usr/sbin/httpd' > \ | |
185 | * /sys/kernel/security/tomoyo/exception_policy | |
186 | * | |
187 | * and all entries are retrieved by | |
188 | * | |
189 | * # grep ^initialize_domain /sys/kernel/security/tomoyo/exception_policy | |
190 | * | |
191 | * In the example above, /usr/sbin/httpd will belong to | |
192 | * "<kernel> /usr/sbin/httpd" domain. | |
193 | * | |
194 | * You may specify a domainname using "from" keyword. | |
195 | * "initialize_domain /usr/sbin/httpd from <kernel> /etc/rc.d/init.d/httpd" | |
196 | * will cause "/usr/sbin/httpd" executed from "<kernel> /etc/rc.d/init.d/httpd" | |
197 | * domain to belong to "<kernel> /usr/sbin/httpd" domain. | |
198 | * | |
199 | * You may add "no_" prefix to "initialize_domain". | |
200 | * "initialize_domain /usr/sbin/httpd" and | |
201 | * "no_initialize_domain /usr/sbin/httpd from <kernel> /etc/rc.d/init.d/httpd" | |
202 | * will cause "/usr/sbin/httpd" to belong to "<kernel> /usr/sbin/httpd" domain | |
203 | * unless executed from "<kernel> /etc/rc.d/init.d/httpd" domain. | |
204 | */ | |
847b173e | 205 | LIST_HEAD(tomoyo_domain_initializer_list); |
26a2a1c9 | 206 | |
36f5e1ff TH |
207 | static bool tomoyo_same_domain_initializer_entry(const struct tomoyo_acl_head * |
208 | a, | |
209 | const struct tomoyo_acl_head * | |
210 | b) | |
211 | { | |
212 | const struct tomoyo_domain_initializer_entry *p1 = | |
213 | container_of(a, typeof(*p1), head); | |
214 | const struct tomoyo_domain_initializer_entry *p2 = | |
215 | container_of(b, typeof(*p2), head); | |
216 | return p1->is_not == p2->is_not && p1->is_last_name == p2->is_last_name | |
217 | && p1->domainname == p2->domainname | |
218 | && p1->program == p2->program; | |
219 | } | |
220 | ||
26a2a1c9 KT |
221 | /** |
222 | * tomoyo_update_domain_initializer_entry - Update "struct tomoyo_domain_initializer_entry" list. | |
223 | * | |
224 | * @domainname: The name of domain. May be NULL. | |
225 | * @program: The name of program. | |
226 | * @is_not: True if it is "no_initialize_domain" entry. | |
227 | * @is_delete: True if it is a delete request. | |
228 | * | |
229 | * Returns 0 on success, negative value otherwise. | |
fdb8ebb7 TH |
230 | * |
231 | * Caller holds tomoyo_read_lock(). | |
26a2a1c9 KT |
232 | */ |
233 | static int tomoyo_update_domain_initializer_entry(const char *domainname, | |
234 | const char *program, | |
235 | const bool is_not, | |
236 | const bool is_delete) | |
237 | { | |
9e4b50e9 | 238 | struct tomoyo_domain_initializer_entry e = { .is_not = is_not }; |
ca0b7df3 | 239 | int error = is_delete ? -ENOENT : -ENOMEM; |
26a2a1c9 | 240 | |
3f629636 TH |
241 | if (!tomoyo_is_correct_path(program)) |
242 | return -EINVAL; | |
26a2a1c9 KT |
243 | if (domainname) { |
244 | if (!tomoyo_is_domain_def(domainname) && | |
3f629636 | 245 | tomoyo_is_correct_path(domainname)) |
9e4b50e9 | 246 | e.is_last_name = true; |
17080008 | 247 | else if (!tomoyo_is_correct_domain(domainname)) |
26a2a1c9 | 248 | return -EINVAL; |
9e4b50e9 TH |
249 | e.domainname = tomoyo_get_name(domainname); |
250 | if (!e.domainname) | |
ca0b7df3 | 251 | goto out; |
26a2a1c9 | 252 | } |
9e4b50e9 TH |
253 | e.program = tomoyo_get_name(program); |
254 | if (!e.program) | |
ca0b7df3 | 255 | goto out; |
36f5e1ff TH |
256 | error = tomoyo_update_policy(&e.head, sizeof(e), is_delete, |
257 | &tomoyo_domain_initializer_list, | |
258 | tomoyo_same_domain_initializer_entry); | |
ca0b7df3 | 259 | out: |
9e4b50e9 TH |
260 | tomoyo_put_name(e.domainname); |
261 | tomoyo_put_name(e.program); | |
26a2a1c9 KT |
262 | return error; |
263 | } | |
264 | ||
265 | /** | |
266 | * tomoyo_read_domain_initializer_policy - Read "struct tomoyo_domain_initializer_entry" list. | |
267 | * | |
268 | * @head: Pointer to "struct tomoyo_io_buffer". | |
269 | * | |
270 | * Returns true on success, false otherwise. | |
fdb8ebb7 TH |
271 | * |
272 | * Caller holds tomoyo_read_lock(). | |
26a2a1c9 KT |
273 | */ |
274 | bool tomoyo_read_domain_initializer_policy(struct tomoyo_io_buffer *head) | |
275 | { | |
276 | struct list_head *pos; | |
277 | bool done = true; | |
278 | ||
26a2a1c9 KT |
279 | list_for_each_cookie(pos, head->read_var2, |
280 | &tomoyo_domain_initializer_list) { | |
281 | const char *no; | |
282 | const char *from = ""; | |
283 | const char *domain = ""; | |
284 | struct tomoyo_domain_initializer_entry *ptr; | |
285 | ptr = list_entry(pos, struct tomoyo_domain_initializer_entry, | |
82e0f001 TH |
286 | head.list); |
287 | if (ptr->head.is_deleted) | |
26a2a1c9 KT |
288 | continue; |
289 | no = ptr->is_not ? "no_" : ""; | |
290 | if (ptr->domainname) { | |
291 | from = " from "; | |
292 | domain = ptr->domainname->name; | |
293 | } | |
7d2948b1 TH |
294 | done = tomoyo_io_printf(head, |
295 | "%s" TOMOYO_KEYWORD_INITIALIZE_DOMAIN | |
296 | "%s%s%s\n", no, ptr->program->name, | |
297 | from, domain); | |
298 | if (!done) | |
26a2a1c9 | 299 | break; |
26a2a1c9 | 300 | } |
26a2a1c9 KT |
301 | return done; |
302 | } | |
303 | ||
304 | /** | |
305 | * tomoyo_write_domain_initializer_policy - Write "struct tomoyo_domain_initializer_entry" list. | |
306 | * | |
307 | * @data: String to parse. | |
308 | * @is_not: True if it is "no_initialize_domain" entry. | |
309 | * @is_delete: True if it is a delete request. | |
310 | * | |
311 | * Returns 0 on success, negative value otherwise. | |
fdb8ebb7 TH |
312 | * |
313 | * Caller holds tomoyo_read_lock(). | |
26a2a1c9 KT |
314 | */ |
315 | int tomoyo_write_domain_initializer_policy(char *data, const bool is_not, | |
316 | const bool is_delete) | |
317 | { | |
318 | char *cp = strstr(data, " from "); | |
319 | ||
320 | if (cp) { | |
321 | *cp = '\0'; | |
322 | return tomoyo_update_domain_initializer_entry(cp + 6, data, | |
323 | is_not, | |
324 | is_delete); | |
325 | } | |
326 | return tomoyo_update_domain_initializer_entry(NULL, data, is_not, | |
327 | is_delete); | |
328 | } | |
329 | ||
330 | /** | |
331 | * tomoyo_is_domain_initializer - Check whether the given program causes domainname reinitialization. | |
332 | * | |
333 | * @domainname: The name of domain. | |
334 | * @program: The name of program. | |
335 | * @last_name: The last component of @domainname. | |
336 | * | |
337 | * Returns true if executing @program reinitializes domain transition, | |
338 | * false otherwise. | |
fdb8ebb7 TH |
339 | * |
340 | * Caller holds tomoyo_read_lock(). | |
26a2a1c9 KT |
341 | */ |
342 | static bool tomoyo_is_domain_initializer(const struct tomoyo_path_info * | |
343 | domainname, | |
344 | const struct tomoyo_path_info *program, | |
345 | const struct tomoyo_path_info * | |
346 | last_name) | |
347 | { | |
348 | struct tomoyo_domain_initializer_entry *ptr; | |
349 | bool flag = false; | |
350 | ||
82e0f001 TH |
351 | list_for_each_entry_rcu(ptr, &tomoyo_domain_initializer_list, |
352 | head.list) { | |
353 | if (ptr->head.is_deleted) | |
26a2a1c9 KT |
354 | continue; |
355 | if (ptr->domainname) { | |
356 | if (!ptr->is_last_name) { | |
357 | if (ptr->domainname != domainname) | |
358 | continue; | |
359 | } else { | |
360 | if (tomoyo_pathcmp(ptr->domainname, last_name)) | |
361 | continue; | |
362 | } | |
363 | } | |
364 | if (tomoyo_pathcmp(ptr->program, program)) | |
365 | continue; | |
366 | if (ptr->is_not) { | |
367 | flag = false; | |
368 | break; | |
369 | } | |
370 | flag = true; | |
371 | } | |
26a2a1c9 KT |
372 | return flag; |
373 | } | |
374 | ||
c3fa109a TH |
375 | /* |
376 | * tomoyo_domain_keeper_list is used for holding list of domainnames which | |
377 | * suppresses domain transition. Normally, a domainname is monotonically | |
378 | * getting longer. But sometimes, we want to suppress domain transition. | |
379 | * It would be convenient for us that programs executed from a login session | |
380 | * belong to the same domain. Thus, TOMOYO provides a way to suppress domain | |
381 | * transition. | |
382 | * | |
383 | * An entry is added by | |
384 | * | |
385 | * # echo 'keep_domain <kernel> /usr/sbin/sshd /bin/bash' > \ | |
386 | * /sys/kernel/security/tomoyo/exception_policy | |
387 | * | |
388 | * and is deleted by | |
389 | * | |
390 | * # echo 'delete keep_domain <kernel> /usr/sbin/sshd /bin/bash' > \ | |
391 | * /sys/kernel/security/tomoyo/exception_policy | |
392 | * | |
393 | * and all entries are retrieved by | |
394 | * | |
395 | * # grep ^keep_domain /sys/kernel/security/tomoyo/exception_policy | |
396 | * | |
397 | * In the example above, any process which belongs to | |
398 | * "<kernel> /usr/sbin/sshd /bin/bash" domain will remain in that domain, | |
399 | * unless explicitly specified by "initialize_domain" or "no_keep_domain". | |
400 | * | |
401 | * You may specify a program using "from" keyword. | |
402 | * "keep_domain /bin/pwd from <kernel> /usr/sbin/sshd /bin/bash" | |
403 | * will cause "/bin/pwd" executed from "<kernel> /usr/sbin/sshd /bin/bash" | |
404 | * domain to remain in "<kernel> /usr/sbin/sshd /bin/bash" domain. | |
405 | * | |
406 | * You may add "no_" prefix to "keep_domain". | |
407 | * "keep_domain <kernel> /usr/sbin/sshd /bin/bash" and | |
408 | * "no_keep_domain /usr/bin/passwd from <kernel> /usr/sbin/sshd /bin/bash" will | |
409 | * cause "/usr/bin/passwd" to belong to | |
410 | * "<kernel> /usr/sbin/sshd /bin/bash /usr/bin/passwd" domain, unless | |
411 | * explicitly specified by "initialize_domain". | |
412 | */ | |
847b173e | 413 | LIST_HEAD(tomoyo_domain_keeper_list); |
26a2a1c9 | 414 | |
36f5e1ff TH |
415 | static bool tomoyo_same_domain_keeper_entry(const struct tomoyo_acl_head *a, |
416 | const struct tomoyo_acl_head *b) | |
417 | { | |
418 | const struct tomoyo_domain_keeper_entry *p1 = | |
419 | container_of(a, typeof(*p1), head); | |
420 | const struct tomoyo_domain_keeper_entry *p2 = | |
421 | container_of(b, typeof(*p2), head); | |
422 | return p1->is_not == p2->is_not && p1->is_last_name == p2->is_last_name | |
423 | && p1->domainname == p2->domainname | |
424 | && p1->program == p2->program; | |
425 | } | |
426 | ||
26a2a1c9 KT |
427 | /** |
428 | * tomoyo_update_domain_keeper_entry - Update "struct tomoyo_domain_keeper_entry" list. | |
429 | * | |
430 | * @domainname: The name of domain. | |
431 | * @program: The name of program. May be NULL. | |
432 | * @is_not: True if it is "no_keep_domain" entry. | |
433 | * @is_delete: True if it is a delete request. | |
434 | * | |
435 | * Returns 0 on success, negative value otherwise. | |
fdb8ebb7 TH |
436 | * |
437 | * Caller holds tomoyo_read_lock(). | |
26a2a1c9 KT |
438 | */ |
439 | static int tomoyo_update_domain_keeper_entry(const char *domainname, | |
440 | const char *program, | |
441 | const bool is_not, | |
442 | const bool is_delete) | |
443 | { | |
9e4b50e9 | 444 | struct tomoyo_domain_keeper_entry e = { .is_not = is_not }; |
ca0b7df3 | 445 | int error = is_delete ? -ENOENT : -ENOMEM; |
26a2a1c9 KT |
446 | |
447 | if (!tomoyo_is_domain_def(domainname) && | |
3f629636 | 448 | tomoyo_is_correct_path(domainname)) |
9e4b50e9 | 449 | e.is_last_name = true; |
17080008 | 450 | else if (!tomoyo_is_correct_domain(domainname)) |
26a2a1c9 KT |
451 | return -EINVAL; |
452 | if (program) { | |
3f629636 | 453 | if (!tomoyo_is_correct_path(program)) |
26a2a1c9 | 454 | return -EINVAL; |
9e4b50e9 TH |
455 | e.program = tomoyo_get_name(program); |
456 | if (!e.program) | |
ca0b7df3 | 457 | goto out; |
26a2a1c9 | 458 | } |
9e4b50e9 TH |
459 | e.domainname = tomoyo_get_name(domainname); |
460 | if (!e.domainname) | |
ca0b7df3 | 461 | goto out; |
36f5e1ff TH |
462 | error = tomoyo_update_policy(&e.head, sizeof(e), is_delete, |
463 | &tomoyo_domain_keeper_list, | |
464 | tomoyo_same_domain_keeper_entry); | |
ca0b7df3 | 465 | out: |
9e4b50e9 TH |
466 | tomoyo_put_name(e.domainname); |
467 | tomoyo_put_name(e.program); | |
26a2a1c9 KT |
468 | return error; |
469 | } | |
470 | ||
471 | /** | |
472 | * tomoyo_write_domain_keeper_policy - Write "struct tomoyo_domain_keeper_entry" list. | |
473 | * | |
474 | * @data: String to parse. | |
475 | * @is_not: True if it is "no_keep_domain" entry. | |
476 | * @is_delete: True if it is a delete request. | |
477 | * | |
fdb8ebb7 | 478 | * Caller holds tomoyo_read_lock(). |
26a2a1c9 KT |
479 | */ |
480 | int tomoyo_write_domain_keeper_policy(char *data, const bool is_not, | |
481 | const bool is_delete) | |
482 | { | |
483 | char *cp = strstr(data, " from "); | |
484 | ||
485 | if (cp) { | |
486 | *cp = '\0'; | |
487 | return tomoyo_update_domain_keeper_entry(cp + 6, data, is_not, | |
488 | is_delete); | |
489 | } | |
490 | return tomoyo_update_domain_keeper_entry(data, NULL, is_not, is_delete); | |
491 | } | |
492 | ||
493 | /** | |
494 | * tomoyo_read_domain_keeper_policy - Read "struct tomoyo_domain_keeper_entry" list. | |
495 | * | |
496 | * @head: Pointer to "struct tomoyo_io_buffer". | |
497 | * | |
498 | * Returns true on success, false otherwise. | |
fdb8ebb7 TH |
499 | * |
500 | * Caller holds tomoyo_read_lock(). | |
26a2a1c9 KT |
501 | */ |
502 | bool tomoyo_read_domain_keeper_policy(struct tomoyo_io_buffer *head) | |
503 | { | |
504 | struct list_head *pos; | |
33043cbb | 505 | bool done = true; |
26a2a1c9 | 506 | |
26a2a1c9 KT |
507 | list_for_each_cookie(pos, head->read_var2, |
508 | &tomoyo_domain_keeper_list) { | |
509 | struct tomoyo_domain_keeper_entry *ptr; | |
510 | const char *no; | |
511 | const char *from = ""; | |
512 | const char *program = ""; | |
513 | ||
82e0f001 TH |
514 | ptr = list_entry(pos, struct tomoyo_domain_keeper_entry, |
515 | head.list); | |
516 | if (ptr->head.is_deleted) | |
26a2a1c9 KT |
517 | continue; |
518 | no = ptr->is_not ? "no_" : ""; | |
519 | if (ptr->program) { | |
520 | from = " from "; | |
521 | program = ptr->program->name; | |
522 | } | |
7d2948b1 TH |
523 | done = tomoyo_io_printf(head, |
524 | "%s" TOMOYO_KEYWORD_KEEP_DOMAIN | |
525 | "%s%s%s\n", no, program, from, | |
526 | ptr->domainname->name); | |
527 | if (!done) | |
26a2a1c9 | 528 | break; |
26a2a1c9 | 529 | } |
26a2a1c9 KT |
530 | return done; |
531 | } | |
532 | ||
533 | /** | |
534 | * tomoyo_is_domain_keeper - Check whether the given program causes domain transition suppression. | |
535 | * | |
536 | * @domainname: The name of domain. | |
537 | * @program: The name of program. | |
538 | * @last_name: The last component of @domainname. | |
539 | * | |
540 | * Returns true if executing @program supresses domain transition, | |
541 | * false otherwise. | |
fdb8ebb7 TH |
542 | * |
543 | * Caller holds tomoyo_read_lock(). | |
26a2a1c9 KT |
544 | */ |
545 | static bool tomoyo_is_domain_keeper(const struct tomoyo_path_info *domainname, | |
546 | const struct tomoyo_path_info *program, | |
547 | const struct tomoyo_path_info *last_name) | |
548 | { | |
549 | struct tomoyo_domain_keeper_entry *ptr; | |
550 | bool flag = false; | |
551 | ||
82e0f001 TH |
552 | list_for_each_entry_rcu(ptr, &tomoyo_domain_keeper_list, head.list) { |
553 | if (ptr->head.is_deleted) | |
26a2a1c9 KT |
554 | continue; |
555 | if (!ptr->is_last_name) { | |
556 | if (ptr->domainname != domainname) | |
557 | continue; | |
558 | } else { | |
559 | if (tomoyo_pathcmp(ptr->domainname, last_name)) | |
560 | continue; | |
561 | } | |
562 | if (ptr->program && tomoyo_pathcmp(ptr->program, program)) | |
563 | continue; | |
564 | if (ptr->is_not) { | |
565 | flag = false; | |
566 | break; | |
567 | } | |
568 | flag = true; | |
569 | } | |
26a2a1c9 KT |
570 | return flag; |
571 | } | |
572 | ||
1084307c TH |
573 | /* |
574 | * tomoyo_aggregator_list is used for holding list of rewrite table for | |
575 | * execve() request. Some programs provides similar functionality. This keyword | |
576 | * allows users to aggregate such programs. | |
577 | * | |
578 | * Entries are added by | |
579 | * | |
580 | * # echo 'aggregator /usr/bin/vi /./editor' > \ | |
581 | * /sys/kernel/security/tomoyo/exception_policy | |
582 | * # echo 'aggregator /usr/bin/emacs /./editor' > \ | |
583 | * /sys/kernel/security/tomoyo/exception_policy | |
584 | * | |
585 | * and are deleted by | |
586 | * | |
587 | * # echo 'delete aggregator /usr/bin/vi /./editor' > \ | |
588 | * /sys/kernel/security/tomoyo/exception_policy | |
589 | * # echo 'delete aggregator /usr/bin/emacs /./editor' > \ | |
590 | * /sys/kernel/security/tomoyo/exception_policy | |
591 | * | |
592 | * and all entries are retrieved by | |
593 | * | |
594 | * # grep ^aggregator /sys/kernel/security/tomoyo/exception_policy | |
595 | * | |
596 | * In the example above, if /usr/bin/vi or /usr/bin/emacs are executed, | |
597 | * permission is checked for /./editor and domainname which the current process | |
598 | * will belong to after execve() succeeds is calculated using /./editor . | |
599 | */ | |
600 | LIST_HEAD(tomoyo_aggregator_list); | |
601 | ||
36f5e1ff TH |
602 | static bool tomoyo_same_aggregator_entry(const struct tomoyo_acl_head *a, |
603 | const struct tomoyo_acl_head *b) | |
604 | { | |
605 | const struct tomoyo_aggregator_entry *p1 = container_of(a, typeof(*p1), | |
606 | head); | |
607 | const struct tomoyo_aggregator_entry *p2 = container_of(b, typeof(*p2), | |
608 | head); | |
609 | return p1->original_name == p2->original_name && | |
610 | p1->aggregated_name == p2->aggregated_name; | |
611 | } | |
612 | ||
1084307c TH |
613 | /** |
614 | * tomoyo_update_aggregator_entry - Update "struct tomoyo_aggregator_entry" list. | |
615 | * | |
616 | * @original_name: The original program's name. | |
617 | * @aggregated_name: The program name to use. | |
618 | * @is_delete: True if it is a delete request. | |
619 | * | |
620 | * Returns 0 on success, negative value otherwise. | |
621 | * | |
622 | * Caller holds tomoyo_read_lock(). | |
623 | */ | |
624 | static int tomoyo_update_aggregator_entry(const char *original_name, | |
625 | const char *aggregated_name, | |
626 | const bool is_delete) | |
627 | { | |
1084307c TH |
628 | struct tomoyo_aggregator_entry e = { }; |
629 | int error = is_delete ? -ENOENT : -ENOMEM; | |
630 | ||
631 | if (!tomoyo_is_correct_path(original_name) || | |
632 | !tomoyo_is_correct_path(aggregated_name)) | |
633 | return -EINVAL; | |
634 | e.original_name = tomoyo_get_name(original_name); | |
635 | e.aggregated_name = tomoyo_get_name(aggregated_name); | |
636 | if (!e.original_name || !e.aggregated_name || | |
637 | e.aggregated_name->is_patterned) /* No patterns allowed. */ | |
638 | goto out; | |
36f5e1ff TH |
639 | error = tomoyo_update_policy(&e.head, sizeof(e), is_delete, |
640 | &tomoyo_aggregator_list, | |
641 | tomoyo_same_aggregator_entry); | |
1084307c TH |
642 | out: |
643 | tomoyo_put_name(e.original_name); | |
644 | tomoyo_put_name(e.aggregated_name); | |
645 | return error; | |
646 | } | |
647 | ||
648 | /** | |
649 | * tomoyo_read_aggregator_policy - Read "struct tomoyo_aggregator_entry" list. | |
650 | * | |
651 | * @head: Pointer to "struct tomoyo_io_buffer". | |
652 | * | |
653 | * Returns true on success, false otherwise. | |
654 | * | |
655 | * Caller holds tomoyo_read_lock(). | |
656 | */ | |
657 | bool tomoyo_read_aggregator_policy(struct tomoyo_io_buffer *head) | |
658 | { | |
659 | struct list_head *pos; | |
660 | bool done = true; | |
661 | ||
662 | list_for_each_cookie(pos, head->read_var2, &tomoyo_aggregator_list) { | |
663 | struct tomoyo_aggregator_entry *ptr; | |
664 | ||
82e0f001 TH |
665 | ptr = list_entry(pos, struct tomoyo_aggregator_entry, |
666 | head.list); | |
667 | if (ptr->head.is_deleted) | |
1084307c TH |
668 | continue; |
669 | done = tomoyo_io_printf(head, TOMOYO_KEYWORD_AGGREGATOR | |
670 | "%s %s\n", ptr->original_name->name, | |
671 | ptr->aggregated_name->name); | |
672 | if (!done) | |
673 | break; | |
674 | } | |
675 | return done; | |
676 | } | |
677 | ||
678 | /** | |
679 | * tomoyo_write_aggregator_policy - Write "struct tomoyo_aggregator_entry" list. | |
680 | * | |
681 | * @data: String to parse. | |
682 | * @is_delete: True if it is a delete request. | |
683 | * | |
684 | * Returns 0 on success, negative value otherwise. | |
685 | * | |
686 | * Caller holds tomoyo_read_lock(). | |
687 | */ | |
688 | int tomoyo_write_aggregator_policy(char *data, const bool is_delete) | |
689 | { | |
690 | char *cp = strchr(data, ' '); | |
691 | ||
692 | if (!cp) | |
693 | return -EINVAL; | |
694 | *cp++ = '\0'; | |
695 | return tomoyo_update_aggregator_entry(data, cp, is_delete); | |
696 | } | |
697 | ||
c3fa109a TH |
698 | /* |
699 | * tomoyo_alias_list is used for holding list of symlink's pathnames which are | |
700 | * allowed to be passed to an execve() request. Normally, the domainname which | |
701 | * the current process will belong to after execve() succeeds is calculated | |
702 | * using dereferenced pathnames. But some programs behave differently depending | |
703 | * on the name passed to argv[0]. For busybox, calculating domainname using | |
704 | * dereferenced pathnames will cause all programs in the busybox to belong to | |
705 | * the same domain. Thus, TOMOYO provides a way to allow use of symlink's | |
706 | * pathname for checking execve()'s permission and calculating domainname which | |
707 | * the current process will belong to after execve() succeeds. | |
708 | * | |
709 | * An entry is added by | |
710 | * | |
711 | * # echo 'alias /bin/busybox /bin/cat' > \ | |
712 | * /sys/kernel/security/tomoyo/exception_policy | |
713 | * | |
714 | * and is deleted by | |
715 | * | |
716 | * # echo 'delete alias /bin/busybox /bin/cat' > \ | |
717 | * /sys/kernel/security/tomoyo/exception_policy | |
718 | * | |
719 | * and all entries are retrieved by | |
720 | * | |
721 | * # grep ^alias /sys/kernel/security/tomoyo/exception_policy | |
722 | * | |
723 | * In the example above, if /bin/cat is a symlink to /bin/busybox and execution | |
724 | * of /bin/cat is requested, permission is checked for /bin/cat rather than | |
725 | * /bin/busybox and domainname which the current process will belong to after | |
726 | * execve() succeeds is calculated using /bin/cat rather than /bin/busybox . | |
727 | */ | |
847b173e | 728 | LIST_HEAD(tomoyo_alias_list); |
26a2a1c9 | 729 | |
36f5e1ff TH |
730 | static bool tomoyo_same_alias_entry(const struct tomoyo_acl_head *a, |
731 | const struct tomoyo_acl_head *b) | |
732 | { | |
733 | const struct tomoyo_alias_entry *p1 = container_of(a, typeof(*p1), | |
734 | head); | |
735 | const struct tomoyo_alias_entry *p2 = container_of(b, typeof(*p2), | |
736 | head); | |
737 | return p1->original_name == p2->original_name && | |
738 | p1->aliased_name == p2->aliased_name; | |
739 | } | |
740 | ||
26a2a1c9 KT |
741 | /** |
742 | * tomoyo_update_alias_entry - Update "struct tomoyo_alias_entry" list. | |
743 | * | |
744 | * @original_name: The original program's real name. | |
745 | * @aliased_name: The symbolic program's symbolic link's name. | |
746 | * @is_delete: True if it is a delete request. | |
747 | * | |
748 | * Returns 0 on success, negative value otherwise. | |
fdb8ebb7 TH |
749 | * |
750 | * Caller holds tomoyo_read_lock(). | |
26a2a1c9 KT |
751 | */ |
752 | static int tomoyo_update_alias_entry(const char *original_name, | |
753 | const char *aliased_name, | |
754 | const bool is_delete) | |
755 | { | |
9e4b50e9 | 756 | struct tomoyo_alias_entry e = { }; |
ca0b7df3 | 757 | int error = is_delete ? -ENOENT : -ENOMEM; |
26a2a1c9 | 758 | |
3f629636 TH |
759 | if (!tomoyo_is_correct_path(original_name) || |
760 | !tomoyo_is_correct_path(aliased_name)) | |
761 | return -EINVAL; | |
9e4b50e9 TH |
762 | e.original_name = tomoyo_get_name(original_name); |
763 | e.aliased_name = tomoyo_get_name(aliased_name); | |
3f629636 TH |
764 | if (!e.original_name || !e.aliased_name || |
765 | e.original_name->is_patterned || e.aliased_name->is_patterned) | |
766 | goto out; /* No patterns allowed. */ | |
36f5e1ff TH |
767 | error = tomoyo_update_policy(&e.head, sizeof(e), is_delete, |
768 | &tomoyo_alias_list, | |
769 | tomoyo_same_alias_entry); | |
ca0b7df3 | 770 | out: |
9e4b50e9 TH |
771 | tomoyo_put_name(e.original_name); |
772 | tomoyo_put_name(e.aliased_name); | |
26a2a1c9 KT |
773 | return error; |
774 | } | |
775 | ||
776 | /** | |
777 | * tomoyo_read_alias_policy - Read "struct tomoyo_alias_entry" list. | |
778 | * | |
779 | * @head: Pointer to "struct tomoyo_io_buffer". | |
780 | * | |
781 | * Returns true on success, false otherwise. | |
fdb8ebb7 TH |
782 | * |
783 | * Caller holds tomoyo_read_lock(). | |
26a2a1c9 KT |
784 | */ |
785 | bool tomoyo_read_alias_policy(struct tomoyo_io_buffer *head) | |
786 | { | |
787 | struct list_head *pos; | |
788 | bool done = true; | |
789 | ||
26a2a1c9 KT |
790 | list_for_each_cookie(pos, head->read_var2, &tomoyo_alias_list) { |
791 | struct tomoyo_alias_entry *ptr; | |
792 | ||
82e0f001 TH |
793 | ptr = list_entry(pos, struct tomoyo_alias_entry, head.list); |
794 | if (ptr->head.is_deleted) | |
26a2a1c9 | 795 | continue; |
7d2948b1 TH |
796 | done = tomoyo_io_printf(head, TOMOYO_KEYWORD_ALIAS "%s %s\n", |
797 | ptr->original_name->name, | |
798 | ptr->aliased_name->name); | |
799 | if (!done) | |
26a2a1c9 | 800 | break; |
26a2a1c9 | 801 | } |
26a2a1c9 KT |
802 | return done; |
803 | } | |
804 | ||
805 | /** | |
806 | * tomoyo_write_alias_policy - Write "struct tomoyo_alias_entry" list. | |
807 | * | |
808 | * @data: String to parse. | |
809 | * @is_delete: True if it is a delete request. | |
810 | * | |
811 | * Returns 0 on success, negative value otherwise. | |
fdb8ebb7 TH |
812 | * |
813 | * Caller holds tomoyo_read_lock(). | |
26a2a1c9 KT |
814 | */ |
815 | int tomoyo_write_alias_policy(char *data, const bool is_delete) | |
816 | { | |
817 | char *cp = strchr(data, ' '); | |
818 | ||
819 | if (!cp) | |
820 | return -EINVAL; | |
821 | *cp++ = '\0'; | |
822 | return tomoyo_update_alias_entry(data, cp, is_delete); | |
823 | } | |
824 | ||
26a2a1c9 KT |
825 | /** |
826 | * tomoyo_find_or_assign_new_domain - Create a domain. | |
827 | * | |
828 | * @domainname: The name of domain. | |
829 | * @profile: Profile number to assign if the domain was newly created. | |
830 | * | |
831 | * Returns pointer to "struct tomoyo_domain_info" on success, NULL otherwise. | |
fdb8ebb7 TH |
832 | * |
833 | * Caller holds tomoyo_read_lock(). | |
26a2a1c9 KT |
834 | */ |
835 | struct tomoyo_domain_info *tomoyo_find_or_assign_new_domain(const char * | |
836 | domainname, | |
837 | const u8 profile) | |
838 | { | |
ca0b7df3 | 839 | struct tomoyo_domain_info *entry; |
29282381 | 840 | struct tomoyo_domain_info *domain = NULL; |
26a2a1c9 | 841 | const struct tomoyo_path_info *saved_domainname; |
ca0b7df3 | 842 | bool found = false; |
26a2a1c9 | 843 | |
17080008 | 844 | if (!tomoyo_is_correct_domain(domainname)) |
ca0b7df3 | 845 | return NULL; |
bf24fb01 | 846 | saved_domainname = tomoyo_get_name(domainname); |
26a2a1c9 | 847 | if (!saved_domainname) |
ca0b7df3 | 848 | return NULL; |
4e5d6f7e | 849 | entry = kzalloc(sizeof(*entry), GFP_NOFS); |
29282381 TH |
850 | if (mutex_lock_interruptible(&tomoyo_policy_lock)) |
851 | goto out; | |
ca0b7df3 TH |
852 | list_for_each_entry_rcu(domain, &tomoyo_domain_list, list) { |
853 | if (domain->is_deleted || | |
854 | tomoyo_pathcmp(saved_domainname, domain->domainname)) | |
855 | continue; | |
856 | found = true; | |
857 | break; | |
858 | } | |
859 | if (!found && tomoyo_memory_ok(entry)) { | |
860 | INIT_LIST_HEAD(&entry->acl_info_list); | |
861 | entry->domainname = saved_domainname; | |
bf24fb01 | 862 | saved_domainname = NULL; |
ca0b7df3 TH |
863 | entry->profile = profile; |
864 | list_add_tail_rcu(&entry->list, &tomoyo_domain_list); | |
865 | domain = entry; | |
866 | entry = NULL; | |
867 | found = true; | |
26a2a1c9 | 868 | } |
f737d95d | 869 | mutex_unlock(&tomoyo_policy_lock); |
29282381 | 870 | out: |
bf24fb01 | 871 | tomoyo_put_name(saved_domainname); |
ca0b7df3 TH |
872 | kfree(entry); |
873 | return found ? domain : NULL; | |
26a2a1c9 KT |
874 | } |
875 | ||
876 | /** | |
877 | * tomoyo_find_next_domain - Find a domain. | |
878 | * | |
56f8c9bc | 879 | * @bprm: Pointer to "struct linux_binprm". |
26a2a1c9 KT |
880 | * |
881 | * Returns 0 on success, negative value otherwise. | |
fdb8ebb7 TH |
882 | * |
883 | * Caller holds tomoyo_read_lock(). | |
26a2a1c9 | 884 | */ |
56f8c9bc | 885 | int tomoyo_find_next_domain(struct linux_binprm *bprm) |
26a2a1c9 | 886 | { |
17fcfbd9 | 887 | struct tomoyo_request_info r; |
c8c57e84 | 888 | char *tmp = kzalloc(TOMOYO_EXEC_TMPSIZE, GFP_NOFS); |
26a2a1c9 KT |
889 | struct tomoyo_domain_info *old_domain = tomoyo_domain(); |
890 | struct tomoyo_domain_info *domain = NULL; | |
891 | const char *old_domain_name = old_domain->domainname->name; | |
892 | const char *original_name = bprm->filename; | |
57c2590f TH |
893 | u8 mode; |
894 | bool is_enforce; | |
26a2a1c9 | 895 | int retval = -ENOMEM; |
c8c57e84 TH |
896 | bool need_kfree = false; |
897 | struct tomoyo_path_info rn = { }; /* real name */ | |
898 | struct tomoyo_path_info sn = { }; /* symlink name */ | |
17fcfbd9 | 899 | struct tomoyo_path_info ln; /* last name */ |
26a2a1c9 | 900 | |
c8c57e84 TH |
901 | ln.name = tomoyo_get_last_name(old_domain); |
902 | tomoyo_fill_path_info(&ln); | |
57c2590f TH |
903 | mode = tomoyo_init_request_info(&r, NULL, TOMOYO_MAC_FILE_EXECUTE); |
904 | is_enforce = (mode == TOMOYO_CONFIG_ENFORCING); | |
26a2a1c9 KT |
905 | if (!tmp) |
906 | goto out; | |
907 | ||
17fcfbd9 | 908 | retry: |
c8c57e84 TH |
909 | if (need_kfree) { |
910 | kfree(rn.name); | |
911 | need_kfree = false; | |
912 | } | |
26a2a1c9 KT |
913 | /* Get tomoyo_realpath of program. */ |
914 | retval = -ENOENT; | |
c8c57e84 TH |
915 | rn.name = tomoyo_realpath(original_name); |
916 | if (!rn.name) | |
26a2a1c9 | 917 | goto out; |
c8c57e84 TH |
918 | tomoyo_fill_path_info(&rn); |
919 | need_kfree = true; | |
920 | ||
26a2a1c9 | 921 | /* Get tomoyo_realpath of symbolic link. */ |
c8c57e84 TH |
922 | sn.name = tomoyo_realpath_nofollow(original_name); |
923 | if (!sn.name) | |
26a2a1c9 | 924 | goto out; |
17fcfbd9 | 925 | tomoyo_fill_path_info(&sn); |
26a2a1c9 KT |
926 | |
927 | /* Check 'alias' directive. */ | |
17fcfbd9 | 928 | if (tomoyo_pathcmp(&rn, &sn)) { |
26a2a1c9 KT |
929 | struct tomoyo_alias_entry *ptr; |
930 | /* Is this program allowed to be called via symbolic links? */ | |
82e0f001 TH |
931 | list_for_each_entry_rcu(ptr, &tomoyo_alias_list, head.list) { |
932 | if (ptr->head.is_deleted || | |
17fcfbd9 TH |
933 | tomoyo_pathcmp(&rn, ptr->original_name) || |
934 | tomoyo_pathcmp(&sn, ptr->aliased_name)) | |
26a2a1c9 | 935 | continue; |
c8c57e84 TH |
936 | kfree(rn.name); |
937 | need_kfree = false; | |
938 | /* This is OK because it is read only. */ | |
939 | rn = *ptr->aliased_name; | |
26a2a1c9 KT |
940 | break; |
941 | } | |
26a2a1c9 KT |
942 | } |
943 | ||
1084307c TH |
944 | /* Check 'aggregator' directive. */ |
945 | { | |
946 | struct tomoyo_aggregator_entry *ptr; | |
82e0f001 TH |
947 | list_for_each_entry_rcu(ptr, &tomoyo_aggregator_list, |
948 | head.list) { | |
949 | if (ptr->head.is_deleted || | |
1084307c TH |
950 | !tomoyo_path_matches_pattern(&rn, |
951 | ptr->original_name)) | |
952 | continue; | |
953 | if (need_kfree) | |
954 | kfree(rn.name); | |
955 | need_kfree = false; | |
956 | /* This is OK because it is read only. */ | |
957 | rn = *ptr->aggregated_name; | |
958 | break; | |
959 | } | |
960 | } | |
961 | ||
26a2a1c9 | 962 | /* Check execute permission. */ |
05336dee | 963 | retval = tomoyo_path_permission(&r, TOMOYO_TYPE_EXECUTE, &rn); |
17fcfbd9 TH |
964 | if (retval == TOMOYO_RETRY_REQUEST) |
965 | goto retry; | |
26a2a1c9 KT |
966 | if (retval < 0) |
967 | goto out; | |
968 | ||
17fcfbd9 | 969 | if (tomoyo_is_domain_initializer(old_domain->domainname, &rn, &ln)) { |
26a2a1c9 | 970 | /* Transit to the child of tomoyo_kernel_domain domain. */ |
c8c57e84 TH |
971 | snprintf(tmp, TOMOYO_EXEC_TMPSIZE - 1, |
972 | TOMOYO_ROOT_NAME " " "%s", rn.name); | |
26a2a1c9 KT |
973 | } else if (old_domain == &tomoyo_kernel_domain && |
974 | !tomoyo_policy_loaded) { | |
975 | /* | |
976 | * Needn't to transit from kernel domain before starting | |
977 | * /sbin/init. But transit from kernel domain if executing | |
978 | * initializers because they might start before /sbin/init. | |
979 | */ | |
980 | domain = old_domain; | |
17fcfbd9 | 981 | } else if (tomoyo_is_domain_keeper(old_domain->domainname, &rn, &ln)) { |
26a2a1c9 KT |
982 | /* Keep current domain. */ |
983 | domain = old_domain; | |
984 | } else { | |
985 | /* Normal domain transition. */ | |
c8c57e84 TH |
986 | snprintf(tmp, TOMOYO_EXEC_TMPSIZE - 1, |
987 | "%s %s", old_domain_name, rn.name); | |
26a2a1c9 | 988 | } |
c8c57e84 | 989 | if (domain || strlen(tmp) >= TOMOYO_EXEC_TMPSIZE - 10) |
26a2a1c9 | 990 | goto done; |
c8c57e84 | 991 | domain = tomoyo_find_domain(tmp); |
26a2a1c9 KT |
992 | if (domain) |
993 | goto done; | |
17fcfbd9 TH |
994 | if (is_enforce) { |
995 | int error = tomoyo_supervisor(&r, "# wants to create domain\n" | |
c8c57e84 | 996 | "%s\n", tmp); |
17fcfbd9 TH |
997 | if (error == TOMOYO_RETRY_REQUEST) |
998 | goto retry; | |
999 | if (error < 0) | |
1000 | goto done; | |
1001 | } | |
c8c57e84 | 1002 | domain = tomoyo_find_or_assign_new_domain(tmp, old_domain->profile); |
26a2a1c9 KT |
1003 | done: |
1004 | if (domain) | |
1005 | goto out; | |
c8c57e84 | 1006 | printk(KERN_WARNING "TOMOYO-ERROR: Domain '%s' not defined.\n", tmp); |
26a2a1c9 KT |
1007 | if (is_enforce) |
1008 | retval = -EPERM; | |
1009 | else | |
ea13ddba | 1010 | old_domain->transition_failed = true; |
26a2a1c9 | 1011 | out: |
56f8c9bc TH |
1012 | if (!domain) |
1013 | domain = old_domain; | |
ec8e6a4e TH |
1014 | /* Update reference count on "struct tomoyo_domain_info". */ |
1015 | atomic_inc(&domain->users); | |
56f8c9bc | 1016 | bprm->cred->security = domain; |
c8c57e84 TH |
1017 | if (need_kfree) |
1018 | kfree(rn.name); | |
1019 | kfree(sn.name); | |
8e2d39a1 | 1020 | kfree(tmp); |
26a2a1c9 KT |
1021 | return retval; |
1022 | } |