Commit | Line | Data |
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9590837b KT |
1 | /* |
2 | * security/tomoyo/common.h | |
3 | * | |
76bb0895 | 4 | * Header file for TOMOYO. |
9590837b | 5 | * |
76bb0895 | 6 | * Copyright (C) 2005-2010 NTT DATA CORPORATION |
9590837b KT |
7 | */ |
8 | ||
9 | #ifndef _SECURITY_TOMOYO_COMMON_H | |
10 | #define _SECURITY_TOMOYO_COMMON_H | |
11 | ||
12 | #include <linux/ctype.h> | |
13 | #include <linux/string.h> | |
14 | #include <linux/mm.h> | |
15 | #include <linux/file.h> | |
16 | #include <linux/kmod.h> | |
17 | #include <linux/fs.h> | |
18 | #include <linux/sched.h> | |
19 | #include <linux/namei.h> | |
20 | #include <linux/mount.h> | |
21 | #include <linux/list.h> | |
76bb0895 | 22 | #include <linux/cred.h> |
17fcfbd9 | 23 | #include <linux/poll.h> |
76bb0895 TH |
24 | struct linux_binprm; |
25 | ||
26 | /********** Constants definitions. **********/ | |
27 | ||
28 | /* | |
29 | * TOMOYO uses this hash only when appending a string into the string | |
30 | * table. Frequency of appending strings is very low. So we don't need | |
31 | * large (e.g. 64k) hash size. 256 will be sufficient. | |
32 | */ | |
33 | #define TOMOYO_HASH_BITS 8 | |
34 | #define TOMOYO_MAX_HASH (1u<<TOMOYO_HASH_BITS) | |
35 | ||
c8c57e84 | 36 | #define TOMOYO_EXEC_TMPSIZE 4096 |
76bb0895 TH |
37 | |
38 | /* Profile number is an integer between 0 and 255. */ | |
39 | #define TOMOYO_MAX_PROFILES 256 | |
40 | ||
cb0abe6a TH |
41 | enum tomoyo_mode_index { |
42 | TOMOYO_CONFIG_DISABLED, | |
43 | TOMOYO_CONFIG_LEARNING, | |
44 | TOMOYO_CONFIG_PERMISSIVE, | |
57c2590f TH |
45 | TOMOYO_CONFIG_ENFORCING, |
46 | TOMOYO_CONFIG_USE_DEFAULT = 255 | |
cb0abe6a TH |
47 | }; |
48 | ||
a230f9e7 TH |
49 | enum tomoyo_policy_id { |
50 | TOMOYO_ID_GROUP, | |
51 | TOMOYO_ID_PATH_GROUP, | |
52 | TOMOYO_ID_NUMBER_GROUP, | |
5448ec4f | 53 | TOMOYO_ID_TRANSITION_CONTROL, |
a230f9e7 | 54 | TOMOYO_ID_AGGREGATOR, |
a230f9e7 TH |
55 | TOMOYO_ID_MANAGER, |
56 | TOMOYO_ID_NAME, | |
57 | TOMOYO_ID_ACL, | |
58 | TOMOYO_ID_DOMAIN, | |
59 | TOMOYO_MAX_POLICY | |
60 | }; | |
61 | ||
62 | enum tomoyo_group_id { | |
63 | TOMOYO_PATH_GROUP, | |
64 | TOMOYO_NUMBER_GROUP, | |
65 | TOMOYO_MAX_GROUP | |
66 | }; | |
67 | ||
76bb0895 | 68 | /* Keywords for ACLs. */ |
1084307c | 69 | #define TOMOYO_KEYWORD_AGGREGATOR "aggregator " |
2106ccd9 | 70 | #define TOMOYO_KEYWORD_ALLOW_MOUNT "allow_mount " |
76bb0895 TH |
71 | #define TOMOYO_KEYWORD_ALLOW_READ "allow_read " |
72 | #define TOMOYO_KEYWORD_DELETE "delete " | |
76bb0895 TH |
73 | #define TOMOYO_KEYWORD_INITIALIZE_DOMAIN "initialize_domain " |
74 | #define TOMOYO_KEYWORD_KEEP_DOMAIN "keep_domain " | |
75 | #define TOMOYO_KEYWORD_NO_INITIALIZE_DOMAIN "no_initialize_domain " | |
76 | #define TOMOYO_KEYWORD_NO_KEEP_DOMAIN "no_keep_domain " | |
7762fbff | 77 | #define TOMOYO_KEYWORD_PATH_GROUP "path_group " |
4c3e9e2d | 78 | #define TOMOYO_KEYWORD_NUMBER_GROUP "number_group " |
76bb0895 TH |
79 | #define TOMOYO_KEYWORD_SELECT "select " |
80 | #define TOMOYO_KEYWORD_USE_PROFILE "use_profile " | |
9b244373 TH |
81 | #define TOMOYO_KEYWORD_QUOTA_EXCEEDED "quota_exceeded" |
82 | #define TOMOYO_KEYWORD_TRANSITION_FAILED "transition_failed" | |
76bb0895 TH |
83 | /* A domain definition starts with <kernel>. */ |
84 | #define TOMOYO_ROOT_NAME "<kernel>" | |
85 | #define TOMOYO_ROOT_NAME_LEN (sizeof(TOMOYO_ROOT_NAME) - 1) | |
86 | ||
4c3e9e2d TH |
87 | /* Value type definition. */ |
88 | #define TOMOYO_VALUE_TYPE_INVALID 0 | |
89 | #define TOMOYO_VALUE_TYPE_DECIMAL 1 | |
90 | #define TOMOYO_VALUE_TYPE_OCTAL 2 | |
91 | #define TOMOYO_VALUE_TYPE_HEXADECIMAL 3 | |
92 | ||
5448ec4f TH |
93 | enum tomoyo_transition_type { |
94 | /* Do not change this order, */ | |
95 | TOMOYO_TRANSITION_CONTROL_NO_INITIALIZE, | |
96 | TOMOYO_TRANSITION_CONTROL_INITIALIZE, | |
97 | TOMOYO_TRANSITION_CONTROL_NO_KEEP, | |
98 | TOMOYO_TRANSITION_CONTROL_KEEP, | |
99 | TOMOYO_MAX_TRANSITION_TYPE | |
100 | }; | |
101 | ||
76bb0895 | 102 | /* Index numbers for Access Controls. */ |
084da356 | 103 | enum tomoyo_acl_entry_type_index { |
7ef61233 TH |
104 | TOMOYO_TYPE_PATH_ACL, |
105 | TOMOYO_TYPE_PATH2_ACL, | |
a1f9bb6a | 106 | TOMOYO_TYPE_PATH_NUMBER_ACL, |
75093152 | 107 | TOMOYO_TYPE_MKDEV_ACL, |
2106ccd9 | 108 | TOMOYO_TYPE_MOUNT_ACL, |
084da356 | 109 | }; |
76bb0895 TH |
110 | |
111 | /* Index numbers for File Controls. */ | |
084da356 | 112 | enum tomoyo_path_acl_index { |
7ef61233 TH |
113 | TOMOYO_TYPE_EXECUTE, |
114 | TOMOYO_TYPE_READ, | |
115 | TOMOYO_TYPE_WRITE, | |
7c75964f | 116 | TOMOYO_TYPE_APPEND, |
7ef61233 | 117 | TOMOYO_TYPE_UNLINK, |
7c75964f | 118 | TOMOYO_TYPE_GETATTR, |
7ef61233 | 119 | TOMOYO_TYPE_RMDIR, |
7ef61233 TH |
120 | TOMOYO_TYPE_TRUNCATE, |
121 | TOMOYO_TYPE_SYMLINK, | |
7ef61233 | 122 | TOMOYO_TYPE_CHROOT, |
7ef61233 TH |
123 | TOMOYO_TYPE_UMOUNT, |
124 | TOMOYO_MAX_PATH_OPERATION | |
084da356 TH |
125 | }; |
126 | ||
75093152 | 127 | enum tomoyo_mkdev_acl_index { |
a1f9bb6a TH |
128 | TOMOYO_TYPE_MKBLOCK, |
129 | TOMOYO_TYPE_MKCHAR, | |
75093152 | 130 | TOMOYO_MAX_MKDEV_OPERATION |
a1f9bb6a TH |
131 | }; |
132 | ||
084da356 | 133 | enum tomoyo_path2_acl_index { |
7ef61233 TH |
134 | TOMOYO_TYPE_LINK, |
135 | TOMOYO_TYPE_RENAME, | |
136 | TOMOYO_TYPE_PIVOT_ROOT, | |
137 | TOMOYO_MAX_PATH2_OPERATION | |
084da356 TH |
138 | }; |
139 | ||
a1f9bb6a TH |
140 | enum tomoyo_path_number_acl_index { |
141 | TOMOYO_TYPE_CREATE, | |
142 | TOMOYO_TYPE_MKDIR, | |
143 | TOMOYO_TYPE_MKFIFO, | |
144 | TOMOYO_TYPE_MKSOCK, | |
145 | TOMOYO_TYPE_IOCTL, | |
146 | TOMOYO_TYPE_CHMOD, | |
147 | TOMOYO_TYPE_CHOWN, | |
148 | TOMOYO_TYPE_CHGRP, | |
149 | TOMOYO_MAX_PATH_NUMBER_OPERATION | |
150 | }; | |
151 | ||
084da356 TH |
152 | enum tomoyo_securityfs_interface_index { |
153 | TOMOYO_DOMAINPOLICY, | |
154 | TOMOYO_EXCEPTIONPOLICY, | |
155 | TOMOYO_DOMAIN_STATUS, | |
156 | TOMOYO_PROCESS_STATUS, | |
157 | TOMOYO_MEMINFO, | |
158 | TOMOYO_SELFDOMAIN, | |
159 | TOMOYO_VERSION, | |
160 | TOMOYO_PROFILE, | |
17fcfbd9 | 161 | TOMOYO_QUERY, |
084da356 TH |
162 | TOMOYO_MANAGER |
163 | }; | |
9590837b | 164 | |
57c2590f TH |
165 | enum tomoyo_mac_index { |
166 | TOMOYO_MAC_FILE_EXECUTE, | |
167 | TOMOYO_MAC_FILE_OPEN, | |
168 | TOMOYO_MAC_FILE_CREATE, | |
169 | TOMOYO_MAC_FILE_UNLINK, | |
7c75964f | 170 | TOMOYO_MAC_FILE_GETATTR, |
57c2590f TH |
171 | TOMOYO_MAC_FILE_MKDIR, |
172 | TOMOYO_MAC_FILE_RMDIR, | |
173 | TOMOYO_MAC_FILE_MKFIFO, | |
174 | TOMOYO_MAC_FILE_MKSOCK, | |
175 | TOMOYO_MAC_FILE_TRUNCATE, | |
176 | TOMOYO_MAC_FILE_SYMLINK, | |
57c2590f TH |
177 | TOMOYO_MAC_FILE_MKBLOCK, |
178 | TOMOYO_MAC_FILE_MKCHAR, | |
179 | TOMOYO_MAC_FILE_LINK, | |
180 | TOMOYO_MAC_FILE_RENAME, | |
181 | TOMOYO_MAC_FILE_CHMOD, | |
182 | TOMOYO_MAC_FILE_CHOWN, | |
183 | TOMOYO_MAC_FILE_CHGRP, | |
184 | TOMOYO_MAC_FILE_IOCTL, | |
185 | TOMOYO_MAC_FILE_CHROOT, | |
186 | TOMOYO_MAC_FILE_MOUNT, | |
187 | TOMOYO_MAC_FILE_UMOUNT, | |
188 | TOMOYO_MAC_FILE_PIVOT_ROOT, | |
189 | TOMOYO_MAX_MAC_INDEX | |
190 | }; | |
191 | ||
192 | enum tomoyo_mac_category_index { | |
193 | TOMOYO_MAC_CATEGORY_FILE, | |
194 | TOMOYO_MAX_MAC_CATEGORY_INDEX | |
195 | }; | |
196 | ||
17fcfbd9 TH |
197 | #define TOMOYO_RETRY_REQUEST 1 /* Retry this request. */ |
198 | ||
76bb0895 | 199 | /********** Structure definitions. **********/ |
9590837b | 200 | |
82e0f001 TH |
201 | /* |
202 | * tomoyo_acl_head is a structure which is used for holding elements not in | |
203 | * domain policy. | |
204 | * It has following fields. | |
205 | * | |
206 | * (1) "list" which is linked to tomoyo_policy_list[] . | |
207 | * (2) "is_deleted" is a bool which is true if marked as deleted, false | |
208 | * otherwise. | |
209 | */ | |
210 | struct tomoyo_acl_head { | |
211 | struct list_head list; | |
212 | bool is_deleted; | |
213 | } __packed; | |
214 | ||
cb0abe6a TH |
215 | /* |
216 | * tomoyo_request_info is a structure which is used for holding | |
217 | * | |
218 | * (1) Domain information of current process. | |
17fcfbd9 TH |
219 | * (2) How many retries are made for this request. |
220 | * (3) Profile number used for this request. | |
221 | * (4) Access control mode of the profile. | |
cb0abe6a TH |
222 | */ |
223 | struct tomoyo_request_info { | |
224 | struct tomoyo_domain_info *domain; | |
cf6e9a64 TH |
225 | /* For holding parameters. */ |
226 | union { | |
227 | struct { | |
228 | const struct tomoyo_path_info *filename; | |
484ca79c TH |
229 | /* For using wildcards at tomoyo_find_next_domain(). */ |
230 | const struct tomoyo_path_info *matched_path; | |
cf6e9a64 TH |
231 | u8 operation; |
232 | } path; | |
233 | struct { | |
234 | const struct tomoyo_path_info *filename1; | |
235 | const struct tomoyo_path_info *filename2; | |
236 | u8 operation; | |
237 | } path2; | |
238 | struct { | |
239 | const struct tomoyo_path_info *filename; | |
240 | unsigned int mode; | |
241 | unsigned int major; | |
242 | unsigned int minor; | |
243 | u8 operation; | |
244 | } mkdev; | |
245 | struct { | |
246 | const struct tomoyo_path_info *filename; | |
247 | unsigned long number; | |
248 | u8 operation; | |
249 | } path_number; | |
250 | struct { | |
251 | const struct tomoyo_path_info *type; | |
252 | const struct tomoyo_path_info *dir; | |
253 | const struct tomoyo_path_info *dev; | |
254 | unsigned long flags; | |
255 | int need_dev; | |
256 | } mount; | |
257 | } param; | |
258 | u8 param_type; | |
259 | bool granted; | |
17fcfbd9 TH |
260 | u8 retry; |
261 | u8 profile; | |
cb0abe6a | 262 | u8 mode; /* One of tomoyo_mode_index . */ |
57c2590f | 263 | u8 type; |
cb0abe6a TH |
264 | }; |
265 | ||
c3fa109a TH |
266 | /* |
267 | * tomoyo_path_info is a structure which is used for holding a string data | |
268 | * used by TOMOYO. | |
269 | * This structure has several fields for supporting pattern matching. | |
270 | * | |
271 | * (1) "name" is the '\0' terminated string data. | |
272 | * (2) "hash" is full_name_hash(name, strlen(name)). | |
273 | * This allows tomoyo_pathcmp() to compare by hash before actually compare | |
274 | * using strcmp(). | |
275 | * (3) "const_len" is the length of the initial segment of "name" which | |
276 | * consists entirely of non wildcard characters. In other words, the length | |
277 | * which we can compare two strings using strncmp(). | |
278 | * (4) "is_dir" is a bool which is true if "name" ends with "/", | |
279 | * false otherwise. | |
280 | * TOMOYO distinguishes directory and non-directory. A directory ends with | |
281 | * "/" and non-directory does not end with "/". | |
282 | * (5) "is_patterned" is a bool which is true if "name" contains wildcard | |
283 | * characters, false otherwise. This allows TOMOYO to use "hash" and | |
284 | * strcmp() for string comparison if "is_patterned" is false. | |
c3fa109a | 285 | */ |
9590837b KT |
286 | struct tomoyo_path_info { |
287 | const char *name; | |
288 | u32 hash; /* = full_name_hash(name, strlen(name)) */ | |
9590837b KT |
289 | u16 const_len; /* = tomoyo_const_part_length(name) */ |
290 | bool is_dir; /* = tomoyo_strendswith(name, "/") */ | |
291 | bool is_patterned; /* = tomoyo_path_contains_pattern(name) */ | |
9590837b KT |
292 | }; |
293 | ||
294 | /* | |
e2bf6907 | 295 | * tomoyo_name is a structure which is used for linking |
76bb0895 | 296 | * "struct tomoyo_path_info" into tomoyo_name_list . |
9590837b | 297 | */ |
e2bf6907 | 298 | struct tomoyo_name { |
76bb0895 TH |
299 | struct list_head list; |
300 | atomic_t users; | |
301 | struct tomoyo_path_info entry; | |
302 | }; | |
9590837b | 303 | |
7762fbff TH |
304 | struct tomoyo_name_union { |
305 | const struct tomoyo_path_info *filename; | |
a98aa4de | 306 | struct tomoyo_group *group; |
7762fbff TH |
307 | u8 is_group; |
308 | }; | |
309 | ||
4c3e9e2d TH |
310 | struct tomoyo_number_union { |
311 | unsigned long values[2]; | |
a98aa4de | 312 | struct tomoyo_group *group; |
4c3e9e2d TH |
313 | u8 min_type; |
314 | u8 max_type; | |
315 | u8 is_group; | |
316 | }; | |
317 | ||
a98aa4de TH |
318 | /* Structure for "path_group"/"number_group" directive. */ |
319 | struct tomoyo_group { | |
4c3e9e2d TH |
320 | struct list_head list; |
321 | const struct tomoyo_path_info *group_name; | |
322 | struct list_head member_list; | |
323 | atomic_t users; | |
324 | }; | |
325 | ||
7762fbff | 326 | /* Structure for "path_group" directive. */ |
a98aa4de | 327 | struct tomoyo_path_group { |
82e0f001 | 328 | struct tomoyo_acl_head head; |
7762fbff TH |
329 | const struct tomoyo_path_info *member_name; |
330 | }; | |
331 | ||
4c3e9e2d | 332 | /* Structure for "number_group" directive. */ |
a98aa4de | 333 | struct tomoyo_number_group { |
82e0f001 | 334 | struct tomoyo_acl_head head; |
4c3e9e2d TH |
335 | struct tomoyo_number_union number; |
336 | }; | |
337 | ||
9590837b | 338 | /* |
c3fa109a TH |
339 | * tomoyo_acl_info is a structure which is used for holding |
340 | * | |
341 | * (1) "list" which is linked to the ->acl_info_list of | |
342 | * "struct tomoyo_domain_info" | |
237ab459 TH |
343 | * (2) "is_deleted" is a bool which is true if this domain is marked as |
344 | * "deleted", false otherwise. | |
345 | * (3) "type" which tells type of the entry. | |
9590837b KT |
346 | * |
347 | * Packing "struct tomoyo_acl_info" allows | |
237ab459 | 348 | * "struct tomoyo_path_acl" to embed "u16" and "struct tomoyo_path2_acl" |
75093152 | 349 | * "struct tomoyo_path_number_acl" "struct tomoyo_mkdev_acl" to embed |
237ab459 | 350 | * "u8" without enlarging their structure size. |
9590837b KT |
351 | */ |
352 | struct tomoyo_acl_info { | |
353 | struct list_head list; | |
237ab459 TH |
354 | bool is_deleted; |
355 | u8 type; /* = one of values in "enum tomoyo_acl_entry_type_index". */ | |
9590837b KT |
356 | } __packed; |
357 | ||
c3fa109a TH |
358 | /* |
359 | * tomoyo_domain_info is a structure which is used for holding permissions | |
360 | * (e.g. "allow_read /lib/libc-2.5.so") given to each domain. | |
361 | * It has following fields. | |
362 | * | |
363 | * (1) "list" which is linked to tomoyo_domain_list . | |
364 | * (2) "acl_info_list" which is linked to "struct tomoyo_acl_info". | |
365 | * (3) "domainname" which holds the name of the domain. | |
366 | * (4) "profile" which remembers profile number assigned to this domain. | |
367 | * (5) "is_deleted" is a bool which is true if this domain is marked as | |
368 | * "deleted", false otherwise. | |
369 | * (6) "quota_warned" is a bool which is used for suppressing warning message | |
370 | * when learning mode learned too much entries. | |
7c75964f | 371 | * (7) "transition_failed" is a bool which is set to true when this domain was |
ea13ddba TH |
372 | * unable to create a new domain at tomoyo_find_next_domain() because the |
373 | * name of the domain to be created was too long or it could not allocate | |
374 | * memory. If set to true, more than one process continued execve() | |
375 | * without domain transition. | |
ec8e6a4e TH |
376 | * (9) "users" is an atomic_t that holds how many "struct cred"->security |
377 | * are referring this "struct tomoyo_domain_info". If is_deleted == true | |
378 | * and users == 0, this struct will be kfree()d upon next garbage | |
379 | * collection. | |
c3fa109a TH |
380 | * |
381 | * A domain's lifecycle is an analogy of files on / directory. | |
382 | * Multiple domains with the same domainname cannot be created (as with | |
383 | * creating files with the same filename fails with -EEXIST). | |
384 | * If a process reached a domain, that process can reside in that domain after | |
385 | * that domain is marked as "deleted" (as with a process can access an already | |
386 | * open()ed file after that file was unlink()ed). | |
387 | */ | |
9590837b KT |
388 | struct tomoyo_domain_info { |
389 | struct list_head list; | |
390 | struct list_head acl_info_list; | |
391 | /* Name of this domain. Never NULL. */ | |
392 | const struct tomoyo_path_info *domainname; | |
393 | u8 profile; /* Profile number to use. */ | |
a0558fc3 | 394 | bool is_deleted; /* Delete flag. */ |
9590837b | 395 | bool quota_warned; /* Quota warnning flag. */ |
ea13ddba | 396 | bool transition_failed; /* Domain transition failed flag. */ |
ec8e6a4e | 397 | atomic_t users; /* Number of referring credentials. */ |
9590837b KT |
398 | }; |
399 | ||
9590837b | 400 | /* |
7ef61233 | 401 | * tomoyo_path_acl is a structure which is used for holding an |
c3fa109a TH |
402 | * entry with one pathname operation (e.g. open(), mkdir()). |
403 | * It has following fields. | |
404 | * | |
405 | * (1) "head" which is a "struct tomoyo_acl_info". | |
406 | * (2) "perm" which is a bitmask of permitted operations. | |
7762fbff | 407 | * (3) "name" is the pathname. |
c3fa109a | 408 | * |
7c75964f TH |
409 | * Directives held by this structure are "allow_execute", "allow_read", |
410 | * "allow_write", "allow_append", "allow_unlink", "allow_rmdir", | |
411 | * "allow_truncate", "allow_symlink", "allow_chroot" and "allow_unmount". | |
9590837b | 412 | */ |
7ef61233 TH |
413 | struct tomoyo_path_acl { |
414 | struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH_ACL */ | |
9590837b | 415 | u16 perm; |
7762fbff | 416 | struct tomoyo_name_union name; |
9590837b KT |
417 | }; |
418 | ||
a1f9bb6a TH |
419 | /* |
420 | * tomoyo_path_number_acl is a structure which is used for holding an | |
421 | * entry with one pathname and one number operation. | |
422 | * It has following fields. | |
423 | * | |
424 | * (1) "head" which is a "struct tomoyo_acl_info". | |
425 | * (2) "perm" which is a bitmask of permitted operations. | |
426 | * (3) "name" is the pathname. | |
427 | * (4) "number" is the numeric value. | |
428 | * | |
429 | * Directives held by this structure are "allow_create", "allow_mkdir", | |
430 | * "allow_ioctl", "allow_mkfifo", "allow_mksock", "allow_chmod", "allow_chown" | |
431 | * and "allow_chgrp". | |
432 | * | |
433 | */ | |
434 | struct tomoyo_path_number_acl { | |
435 | struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH_NUMBER_ACL */ | |
436 | u8 perm; | |
437 | struct tomoyo_name_union name; | |
438 | struct tomoyo_number_union number; | |
439 | }; | |
440 | ||
441 | /* | |
75093152 | 442 | * tomoyo_mkdev_acl is a structure which is used for holding an |
a1f9bb6a TH |
443 | * entry with one pathname and three numbers operation. |
444 | * It has following fields. | |
445 | * | |
446 | * (1) "head" which is a "struct tomoyo_acl_info". | |
447 | * (2) "perm" which is a bitmask of permitted operations. | |
448 | * (3) "mode" is the create mode. | |
449 | * (4) "major" is the major number of device node. | |
450 | * (5) "minor" is the minor number of device node. | |
451 | * | |
452 | * Directives held by this structure are "allow_mkchar", "allow_mkblock". | |
453 | * | |
454 | */ | |
75093152 TH |
455 | struct tomoyo_mkdev_acl { |
456 | struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_MKDEV_ACL */ | |
a1f9bb6a TH |
457 | u8 perm; |
458 | struct tomoyo_name_union name; | |
459 | struct tomoyo_number_union mode; | |
460 | struct tomoyo_number_union major; | |
461 | struct tomoyo_number_union minor; | |
462 | }; | |
463 | ||
c3fa109a | 464 | /* |
7ef61233 | 465 | * tomoyo_path2_acl is a structure which is used for holding an |
937bf613 | 466 | * entry with two pathnames operation (i.e. link(), rename() and pivot_root()). |
c3fa109a TH |
467 | * It has following fields. |
468 | * | |
469 | * (1) "head" which is a "struct tomoyo_acl_info". | |
470 | * (2) "perm" which is a bitmask of permitted operations. | |
7762fbff TH |
471 | * (3) "name1" is the source/old pathname. |
472 | * (4) "name2" is the destination/new pathname. | |
c3fa109a | 473 | * |
937bf613 TH |
474 | * Directives held by this structure are "allow_rename", "allow_link" and |
475 | * "allow_pivot_root". | |
c3fa109a | 476 | */ |
7ef61233 TH |
477 | struct tomoyo_path2_acl { |
478 | struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH2_ACL */ | |
9590837b | 479 | u8 perm; |
7762fbff TH |
480 | struct tomoyo_name_union name1; |
481 | struct tomoyo_name_union name2; | |
9590837b KT |
482 | }; |
483 | ||
2106ccd9 TH |
484 | /* |
485 | * tomoyo_mount_acl is a structure which is used for holding an | |
486 | * entry for mount operation. | |
487 | * It has following fields. | |
488 | * | |
489 | * (1) "head" which is a "struct tomoyo_acl_info". | |
237ab459 TH |
490 | * (2) "dev_name" is the device name. |
491 | * (3) "dir_name" is the mount point. | |
492 | * (4) "fs_type" is the filesystem type. | |
2106ccd9 TH |
493 | * (5) "flags" is the mount flags. |
494 | * | |
237ab459 | 495 | * Directive held by this structure is "allow_mount". |
2106ccd9 TH |
496 | */ |
497 | struct tomoyo_mount_acl { | |
498 | struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_MOUNT_ACL */ | |
2106ccd9 TH |
499 | struct tomoyo_name_union dev_name; |
500 | struct tomoyo_name_union dir_name; | |
501 | struct tomoyo_name_union fs_type; | |
502 | struct tomoyo_number_union flags; | |
503 | }; | |
504 | ||
f23571e8 TH |
505 | #define TOMOYO_MAX_IO_READ_QUEUE 32 |
506 | ||
c3fa109a | 507 | /* |
f23571e8 TH |
508 | * Structure for reading/writing policy via /sys/kernel/security/tomoyo |
509 | * interfaces. | |
c3fa109a | 510 | */ |
9590837b | 511 | struct tomoyo_io_buffer { |
8fbe71f0 | 512 | void (*read) (struct tomoyo_io_buffer *); |
9590837b | 513 | int (*write) (struct tomoyo_io_buffer *); |
17fcfbd9 | 514 | int (*poll) (struct file *file, poll_table *wait); |
9590837b KT |
515 | /* Exclusive lock for this structure. */ |
516 | struct mutex io_sem; | |
fdb8ebb7 TH |
517 | /* Index returned by tomoyo_read_lock(). */ |
518 | int reader_idx; | |
f23571e8 TH |
519 | char __user *read_user_buf; |
520 | int read_user_buf_avail; | |
521 | struct { | |
522 | struct list_head *domain; | |
523 | struct list_head *group; | |
524 | struct list_head *acl; | |
525 | int avail; | |
526 | int step; | |
527 | int query_index; | |
528 | u16 index; | |
529 | u8 bit; | |
530 | u8 w_pos; | |
531 | bool eof; | |
532 | bool print_this_domain_only; | |
533 | bool print_execute_only; | |
534 | const char *w[TOMOYO_MAX_IO_READ_QUEUE]; | |
535 | } r; | |
9590837b KT |
536 | /* The position currently writing to. */ |
537 | struct tomoyo_domain_info *write_var1; | |
9590837b KT |
538 | /* Buffer for reading. */ |
539 | char *read_buf; | |
9590837b KT |
540 | /* Size of read buffer. */ |
541 | int readbuf_size; | |
542 | /* Buffer for writing. */ | |
543 | char *write_buf; | |
544 | /* Bytes available for writing. */ | |
545 | int write_avail; | |
546 | /* Size of write buffer. */ | |
547 | int writebuf_size; | |
17fcfbd9 TH |
548 | /* Type of this interface. */ |
549 | u8 type; | |
9590837b KT |
550 | }; |
551 | ||
76bb0895 | 552 | /* |
5448ec4f TH |
553 | * tomoyo_transition_control is a structure which is used for holding |
554 | * "initialize_domain"/"no_initialize_domain"/"keep_domain"/"no_keep_domain" | |
555 | * entries. | |
76bb0895 TH |
556 | * It has following fields. |
557 | * | |
82e0f001 | 558 | * (1) "head" is "struct tomoyo_acl_head". |
5448ec4f | 559 | * (2) "type" is type of this entry. |
82e0f001 | 560 | * (3) "is_last_name" is a bool which is true if "domainname" is "the last |
76bb0895 | 561 | * component of a domainname", false otherwise. |
82e0f001 TH |
562 | * (4) "domainname" which is "a domainname" or "the last component of a |
563 | * domainname". | |
564 | * (5) "program" which is a program's pathname. | |
76bb0895 | 565 | */ |
5448ec4f | 566 | struct tomoyo_transition_control { |
82e0f001 | 567 | struct tomoyo_acl_head head; |
5448ec4f | 568 | u8 type; /* One of values in "enum tomoyo_transition_type". */ |
76bb0895 TH |
569 | /* True if the domainname is tomoyo_get_last_name(). */ |
570 | bool is_last_name; | |
5448ec4f TH |
571 | const struct tomoyo_path_info *domainname; /* Maybe NULL */ |
572 | const struct tomoyo_path_info *program; /* Maybe NULL */ | |
76bb0895 TH |
573 | }; |
574 | ||
1084307c | 575 | /* |
e2bf6907 | 576 | * tomoyo_aggregator is a structure which is used for holding |
1084307c TH |
577 | * "aggregator" entries. |
578 | * It has following fields. | |
579 | * | |
82e0f001 | 580 | * (1) "head" is "struct tomoyo_acl_head". |
1084307c TH |
581 | * (2) "original_name" which is originally requested name. |
582 | * (3) "aggregated_name" which is name to rewrite. | |
1084307c | 583 | */ |
e2bf6907 | 584 | struct tomoyo_aggregator { |
82e0f001 | 585 | struct tomoyo_acl_head head; |
1084307c TH |
586 | const struct tomoyo_path_info *original_name; |
587 | const struct tomoyo_path_info *aggregated_name; | |
1084307c TH |
588 | }; |
589 | ||
76bb0895 | 590 | /* |
e2bf6907 | 591 | * tomoyo_manager is a structure which is used for holding list of |
76bb0895 TH |
592 | * domainnames or programs which are permitted to modify configuration via |
593 | * /sys/kernel/security/tomoyo/ interface. | |
594 | * It has following fields. | |
595 | * | |
82e0f001 TH |
596 | * (1) "head" is "struct tomoyo_acl_head". |
597 | * (2) "is_domain" is a bool which is true if "manager" is a domainname, false | |
76bb0895 | 598 | * otherwise. |
82e0f001 | 599 | * (3) "manager" is a domainname or a program's pathname. |
76bb0895 | 600 | */ |
e2bf6907 | 601 | struct tomoyo_manager { |
82e0f001 TH |
602 | struct tomoyo_acl_head head; |
603 | bool is_domain; /* True if manager is a domainname. */ | |
76bb0895 TH |
604 | /* A path to program or a domainname. */ |
605 | const struct tomoyo_path_info *manager; | |
76bb0895 TH |
606 | }; |
607 | ||
57c2590f TH |
608 | struct tomoyo_preference { |
609 | unsigned int learning_max_entry; | |
610 | bool enforcing_verbose; | |
611 | bool learning_verbose; | |
612 | bool permissive_verbose; | |
613 | }; | |
614 | ||
615 | struct tomoyo_profile { | |
616 | const struct tomoyo_path_info *comment; | |
617 | struct tomoyo_preference *learning; | |
618 | struct tomoyo_preference *permissive; | |
619 | struct tomoyo_preference *enforcing; | |
620 | struct tomoyo_preference preference; | |
621 | u8 default_config; | |
622 | u8 config[TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX]; | |
623 | }; | |
624 | ||
76bb0895 TH |
625 | /********** Function prototypes. **********/ |
626 | ||
c3ef1500 TH |
627 | /* Check whether the given string starts with the given keyword. */ |
628 | bool tomoyo_str_starts(char **src, const char *find); | |
629 | /* Get tomoyo_realpath() of current process. */ | |
630 | const char *tomoyo_get_exe(void); | |
631 | /* Format string. */ | |
632 | void tomoyo_normalize_line(unsigned char *buffer); | |
633 | /* Print warning or error message on console. */ | |
634 | void tomoyo_warn_log(struct tomoyo_request_info *r, const char *fmt, ...) | |
635 | __attribute__ ((format(printf, 2, 3))); | |
636 | /* Check all profiles currently assigned to domains are defined. */ | |
637 | void tomoyo_check_profile(void); | |
638 | /* Open operation for /sys/kernel/security/tomoyo/ interface. */ | |
639 | int tomoyo_open_control(const u8 type, struct file *file); | |
640 | /* Close /sys/kernel/security/tomoyo/ interface. */ | |
641 | int tomoyo_close_control(struct file *file); | |
0849e3ba TH |
642 | /* Poll operation for /sys/kernel/security/tomoyo/ interface. */ |
643 | int tomoyo_poll_control(struct file *file, poll_table *wait); | |
c3ef1500 TH |
644 | /* Read operation for /sys/kernel/security/tomoyo/ interface. */ |
645 | int tomoyo_read_control(struct file *file, char __user *buffer, | |
646 | const int buffer_len); | |
647 | /* Write operation for /sys/kernel/security/tomoyo/ interface. */ | |
648 | int tomoyo_write_control(struct file *file, const char __user *buffer, | |
649 | const int buffer_len); | |
650 | /* Check whether the domain has too many ACL entries to hold. */ | |
651 | bool tomoyo_domain_quota_is_ok(struct tomoyo_request_info *r); | |
652 | /* Print out of memory warning message. */ | |
653 | void tomoyo_warn_oom(const char *function); | |
7762fbff | 654 | /* Check whether the given name matches the given name_union. */ |
484ca79c TH |
655 | const struct tomoyo_path_info * |
656 | tomoyo_compare_name_union(const struct tomoyo_path_info *name, | |
657 | const struct tomoyo_name_union *ptr); | |
2106ccd9 TH |
658 | /* Check whether the given number matches the given number_union. */ |
659 | bool tomoyo_compare_number_union(const unsigned long value, | |
660 | const struct tomoyo_number_union *ptr); | |
57c2590f | 661 | int tomoyo_get_mode(const u8 profile, const u8 index); |
f23571e8 | 662 | void tomoyo_io_printf(struct tomoyo_io_buffer *head, const char *fmt, ...) |
9590837b KT |
663 | __attribute__ ((format(printf, 2, 3))); |
664 | /* Check whether the domainname is correct. */ | |
75093152 | 665 | bool tomoyo_correct_domain(const unsigned char *domainname); |
9590837b | 666 | /* Check whether the token is correct. */ |
75093152 TH |
667 | bool tomoyo_correct_path(const char *filename); |
668 | bool tomoyo_correct_word(const char *string); | |
9590837b | 669 | /* Check whether the token can be a domainname. */ |
75093152 | 670 | bool tomoyo_domain_def(const unsigned char *buffer); |
7762fbff TH |
671 | bool tomoyo_parse_name_union(const char *filename, |
672 | struct tomoyo_name_union *ptr); | |
673 | /* Check whether the given filename matches the given path_group. */ | |
484ca79c TH |
674 | const struct tomoyo_path_info * |
675 | tomoyo_path_matches_group(const struct tomoyo_path_info *pathname, | |
676 | const struct tomoyo_group *group); | |
4c3e9e2d TH |
677 | /* Check whether the given value matches the given number_group. */ |
678 | bool tomoyo_number_matches_group(const unsigned long min, | |
679 | const unsigned long max, | |
a98aa4de | 680 | const struct tomoyo_group *group); |
9590837b KT |
681 | /* Check whether the given filename matches the given pattern. */ |
682 | bool tomoyo_path_matches_pattern(const struct tomoyo_path_info *filename, | |
683 | const struct tomoyo_path_info *pattern); | |
4c3e9e2d | 684 | |
4c3e9e2d | 685 | bool tomoyo_parse_number_union(char *data, struct tomoyo_number_union *num); |
7762fbff TH |
686 | /* Tokenize a line. */ |
687 | bool tomoyo_tokenize(char *buffer, char *w[], size_t size); | |
9590837b KT |
688 | /* Write domain policy violation warning message to console? */ |
689 | bool tomoyo_verbose_mode(const struct tomoyo_domain_info *domain); | |
2106ccd9 TH |
690 | /* Fill "struct tomoyo_request_info". */ |
691 | int tomoyo_init_request_info(struct tomoyo_request_info *r, | |
57c2590f TH |
692 | struct tomoyo_domain_info *domain, |
693 | const u8 index); | |
2106ccd9 TH |
694 | /* Check permission for mount operation. */ |
695 | int tomoyo_mount_permission(char *dev_name, struct path *path, char *type, | |
696 | unsigned long flags, void *data_page); | |
1084307c | 697 | /* Create "aggregator" entry in exception policy. */ |
e2bf6907 | 698 | int tomoyo_write_aggregator(char *data, const bool is_delete); |
5448ec4f TH |
699 | int tomoyo_write_transition_control(char *data, const bool is_delete, |
700 | const u8 type); | |
9590837b | 701 | /* |
7c75964f | 702 | * Create "allow_execute", "allow_read", "allow_write", "allow_append", |
9590837b KT |
703 | * "allow_create", "allow_unlink", "allow_mkdir", "allow_rmdir", |
704 | * "allow_mkfifo", "allow_mksock", "allow_mkblock", "allow_mkchar", | |
7c75964f TH |
705 | * "allow_truncate", "allow_symlink", "allow_rename" and "allow_link" entry |
706 | * in domain policy. | |
9590837b | 707 | */ |
e2bf6907 TH |
708 | int tomoyo_write_file(char *data, struct tomoyo_domain_info *domain, |
709 | const bool is_delete); | |
2106ccd9 | 710 | /* Create "allow_mount" entry in domain policy. */ |
e2bf6907 TH |
711 | int tomoyo_write_mount(char *data, struct tomoyo_domain_info *domain, |
712 | const bool is_delete); | |
7c2ea22e TH |
713 | /* Create "path_group"/"number_group" entry in exception policy. */ |
714 | int tomoyo_write_group(char *data, const bool is_delete, const u8 type); | |
17fcfbd9 TH |
715 | int tomoyo_supervisor(struct tomoyo_request_info *r, const char *fmt, ...) |
716 | __attribute__ ((format(printf, 2, 3))); | |
9590837b KT |
717 | /* Find a domain by the given name. */ |
718 | struct tomoyo_domain_info *tomoyo_find_domain(const char *domainname); | |
719 | /* Find or create a domain by the given name. */ | |
e2bf6907 TH |
720 | struct tomoyo_domain_info *tomoyo_assign_domain(const char *domainname, |
721 | const u8 profile); | |
57c2590f | 722 | struct tomoyo_profile *tomoyo_profile(const u8 profile); |
7c2ea22e TH |
723 | /* |
724 | * Allocate memory for "struct tomoyo_path_group"/"struct tomoyo_number_group". | |
725 | */ | |
726 | struct tomoyo_group *tomoyo_get_group(const char *group_name, const u8 type); | |
7762fbff | 727 | |
9590837b KT |
728 | /* Check mode for specified functionality. */ |
729 | unsigned int tomoyo_check_flags(const struct tomoyo_domain_info *domain, | |
730 | const u8 index); | |
9590837b KT |
731 | /* Fill in "struct tomoyo_path_info" members. */ |
732 | void tomoyo_fill_path_info(struct tomoyo_path_info *ptr); | |
733 | /* Run policy loader when /sbin/init starts. */ | |
734 | void tomoyo_load_policy(const char *filename); | |
9590837b | 735 | |
4c3e9e2d TH |
736 | void tomoyo_put_number_union(struct tomoyo_number_union *ptr); |
737 | ||
76bb0895 | 738 | /* Convert binary string to ascii string. */ |
c8c57e84 | 739 | char *tomoyo_encode(const char *str); |
76bb0895 TH |
740 | |
741 | /* | |
0617c7ff TH |
742 | * Returns realpath(3) of the given pathname except that |
743 | * ignores chroot'ed root and does not follow the final symlink. | |
76bb0895 | 744 | */ |
0617c7ff | 745 | char *tomoyo_realpath_nofollow(const char *pathname); |
76bb0895 | 746 | /* |
0617c7ff TH |
747 | * Returns realpath(3) of the given pathname except that |
748 | * ignores chroot'ed root and the pathname is already solved. | |
76bb0895 | 749 | */ |
76bb0895 TH |
750 | char *tomoyo_realpath_from_path(struct path *path); |
751 | ||
752 | /* Check memory quota. */ | |
753 | bool tomoyo_memory_ok(void *ptr); | |
9e4b50e9 | 754 | void *tomoyo_commit_ok(void *data, const unsigned int size); |
76bb0895 TH |
755 | |
756 | /* | |
757 | * Keep the given name on the RAM. | |
758 | * The RAM is shared, so NEVER try to modify or kfree() the returned name. | |
759 | */ | |
760 | const struct tomoyo_path_info *tomoyo_get_name(const char *name); | |
761 | ||
762 | /* Check for memory usage. */ | |
8fbe71f0 | 763 | void tomoyo_read_memory_counter(struct tomoyo_io_buffer *head); |
76bb0895 TH |
764 | |
765 | /* Set memory quota. */ | |
766 | int tomoyo_write_memory_quota(struct tomoyo_io_buffer *head); | |
767 | ||
c3ef1500 TH |
768 | /* Initialize mm related code. */ |
769 | void __init tomoyo_mm_init(void); | |
05336dee | 770 | int tomoyo_path_permission(struct tomoyo_request_info *r, u8 operation, |
76bb0895 TH |
771 | const struct tomoyo_path_info *filename); |
772 | int tomoyo_check_open_permission(struct tomoyo_domain_info *domain, | |
773 | struct path *path, const int flag); | |
a1f9bb6a TH |
774 | int tomoyo_path_number_perm(const u8 operation, struct path *path, |
775 | unsigned long number); | |
75093152 TH |
776 | int tomoyo_mkdev_perm(const u8 operation, struct path *path, |
777 | const unsigned int mode, unsigned int dev); | |
97d6931e TH |
778 | int tomoyo_path_perm(const u8 operation, struct path *path); |
779 | int tomoyo_path2_perm(const u8 operation, struct path *path1, | |
780 | struct path *path2); | |
76bb0895 TH |
781 | int tomoyo_find_next_domain(struct linux_binprm *bprm); |
782 | ||
a1f9bb6a TH |
783 | void tomoyo_print_ulong(char *buffer, const int buffer_len, |
784 | const unsigned long value, const u8 type); | |
785 | ||
7762fbff TH |
786 | /* Drop refcount on tomoyo_name_union. */ |
787 | void tomoyo_put_name_union(struct tomoyo_name_union *ptr); | |
788 | ||
847b173e TH |
789 | /* Run garbage collector. */ |
790 | void tomoyo_run_gc(void); | |
791 | ||
792 | void tomoyo_memory_free(void *ptr); | |
793 | ||
237ab459 TH |
794 | int tomoyo_update_domain(struct tomoyo_acl_info *new_entry, const int size, |
795 | bool is_delete, struct tomoyo_domain_info *domain, | |
796 | bool (*check_duplicate) (const struct tomoyo_acl_info | |
797 | *, | |
798 | const struct tomoyo_acl_info | |
799 | *), | |
800 | bool (*merge_duplicate) (struct tomoyo_acl_info *, | |
801 | struct tomoyo_acl_info *, | |
802 | const bool)); | |
36f5e1ff TH |
803 | int tomoyo_update_policy(struct tomoyo_acl_head *new_entry, const int size, |
804 | bool is_delete, struct list_head *list, | |
805 | bool (*check_duplicate) (const struct tomoyo_acl_head | |
806 | *, | |
807 | const struct tomoyo_acl_head | |
808 | *)); | |
99a85259 | 809 | void tomoyo_check_acl(struct tomoyo_request_info *r, |
484ca79c | 810 | bool (*check_entry) (struct tomoyo_request_info *, |
99a85259 | 811 | const struct tomoyo_acl_info *)); |
237ab459 | 812 | |
76bb0895 TH |
813 | /********** External variable definitions. **********/ |
814 | ||
815 | /* Lock for GC. */ | |
816 | extern struct srcu_struct tomoyo_ss; | |
817 | ||
818 | /* The list for "struct tomoyo_domain_info". */ | |
819 | extern struct list_head tomoyo_domain_list; | |
820 | ||
a230f9e7 TH |
821 | extern struct list_head tomoyo_policy_list[TOMOYO_MAX_POLICY]; |
822 | extern struct list_head tomoyo_group_list[TOMOYO_MAX_GROUP]; | |
847b173e | 823 | extern struct list_head tomoyo_name_list[TOMOYO_MAX_HASH]; |
847b173e | 824 | |
76bb0895 TH |
825 | /* Lock for protecting policy. */ |
826 | extern struct mutex tomoyo_policy_lock; | |
827 | ||
828 | /* Has /sbin/init started? */ | |
829 | extern bool tomoyo_policy_loaded; | |
830 | ||
831 | /* The kernel's domain. */ | |
832 | extern struct tomoyo_domain_info tomoyo_kernel_domain; | |
833 | ||
71c28236 TH |
834 | extern const char *tomoyo_path_keyword[TOMOYO_MAX_PATH_OPERATION]; |
835 | extern const char *tomoyo_mkdev_keyword[TOMOYO_MAX_MKDEV_OPERATION]; | |
836 | extern const char *tomoyo_path2_keyword[TOMOYO_MAX_PATH2_OPERATION]; | |
837 | extern const char *tomoyo_path_number_keyword[TOMOYO_MAX_PATH_NUMBER_OPERATION]; | |
838 | ||
17fcfbd9 TH |
839 | extern unsigned int tomoyo_quota_for_query; |
840 | extern unsigned int tomoyo_query_memory_size; | |
841 | ||
76bb0895 TH |
842 | /********** Inlined functions. **********/ |
843 | ||
844 | static inline int tomoyo_read_lock(void) | |
845 | { | |
846 | return srcu_read_lock(&tomoyo_ss); | |
847 | } | |
848 | ||
849 | static inline void tomoyo_read_unlock(int idx) | |
850 | { | |
851 | srcu_read_unlock(&tomoyo_ss, idx); | |
852 | } | |
853 | ||
9590837b KT |
854 | /* strcmp() for "struct tomoyo_path_info" structure. */ |
855 | static inline bool tomoyo_pathcmp(const struct tomoyo_path_info *a, | |
856 | const struct tomoyo_path_info *b) | |
857 | { | |
858 | return a->hash != b->hash || strcmp(a->name, b->name); | |
859 | } | |
860 | ||
9590837b | 861 | /** |
75093152 | 862 | * tomoyo_valid - Check whether the character is a valid char. |
9590837b KT |
863 | * |
864 | * @c: The character to check. | |
865 | * | |
866 | * Returns true if @c is a valid character, false otherwise. | |
867 | */ | |
75093152 | 868 | static inline bool tomoyo_valid(const unsigned char c) |
9590837b KT |
869 | { |
870 | return c > ' ' && c < 127; | |
871 | } | |
872 | ||
873 | /** | |
75093152 | 874 | * tomoyo_invalid - Check whether the character is an invalid char. |
9590837b KT |
875 | * |
876 | * @c: The character to check. | |
877 | * | |
878 | * Returns true if @c is an invalid character, false otherwise. | |
879 | */ | |
75093152 | 880 | static inline bool tomoyo_invalid(const unsigned char c) |
9590837b KT |
881 | { |
882 | return c && (c <= ' ' || c >= 127); | |
883 | } | |
884 | ||
76bb0895 TH |
885 | static inline void tomoyo_put_name(const struct tomoyo_path_info *name) |
886 | { | |
887 | if (name) { | |
e2bf6907 TH |
888 | struct tomoyo_name *ptr = |
889 | container_of(name, typeof(*ptr), entry); | |
76bb0895 TH |
890 | atomic_dec(&ptr->users); |
891 | } | |
892 | } | |
9590837b | 893 | |
a98aa4de | 894 | static inline void tomoyo_put_group(struct tomoyo_group *group) |
4c3e9e2d TH |
895 | { |
896 | if (group) | |
897 | atomic_dec(&group->users); | |
898 | } | |
899 | ||
76bb0895 TH |
900 | static inline struct tomoyo_domain_info *tomoyo_domain(void) |
901 | { | |
902 | return current_cred()->security; | |
903 | } | |
9590837b | 904 | |
76bb0895 TH |
905 | static inline struct tomoyo_domain_info *tomoyo_real_domain(struct task_struct |
906 | *task) | |
907 | { | |
908 | return task_cred_xxx(task, security); | |
909 | } | |
9590837b | 910 | |
75093152 | 911 | static inline bool tomoyo_same_acl_head(const struct tomoyo_acl_info *p1, |
7762fbff TH |
912 | const struct tomoyo_acl_info *p2) |
913 | { | |
914 | return p1->type == p2->type; | |
915 | } | |
916 | ||
75093152 | 917 | static inline bool tomoyo_same_name_union |
7762fbff TH |
918 | (const struct tomoyo_name_union *p1, const struct tomoyo_name_union *p2) |
919 | { | |
920 | return p1->filename == p2->filename && p1->group == p2->group && | |
921 | p1->is_group == p2->is_group; | |
922 | } | |
923 | ||
75093152 | 924 | static inline bool tomoyo_same_number_union |
4c3e9e2d TH |
925 | (const struct tomoyo_number_union *p1, const struct tomoyo_number_union *p2) |
926 | { | |
927 | return p1->values[0] == p2->values[0] && p1->values[1] == p2->values[1] | |
928 | && p1->group == p2->group && p1->min_type == p2->min_type && | |
929 | p1->max_type == p2->max_type && p1->is_group == p2->is_group; | |
930 | } | |
931 | ||
9590837b KT |
932 | /** |
933 | * list_for_each_cookie - iterate over a list with cookie. | |
934 | * @pos: the &struct list_head to use as a loop cursor. | |
9590837b | 935 | * @head: the head for your list. |
9590837b | 936 | */ |
475e6fa3 TH |
937 | #define list_for_each_cookie(pos, head) \ |
938 | if (!pos) \ | |
939 | pos = srcu_dereference((head)->next, &tomoyo_ss); \ | |
940 | for ( ; pos != (head); pos = srcu_dereference(pos->next, &tomoyo_ss)) | |
fdb8ebb7 | 941 | |
9590837b | 942 | #endif /* !defined(_SECURITY_TOMOYO_COMMON_H) */ |