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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 | ||
32997144 TH |
41 | /* Group number is an integer between 0 and 255. */ |
42 | #define TOMOYO_MAX_ACL_GROUPS 256 | |
43 | ||
b5bc60b4 | 44 | /* Index numbers for operation mode. */ |
cb0abe6a TH |
45 | enum tomoyo_mode_index { |
46 | TOMOYO_CONFIG_DISABLED, | |
47 | TOMOYO_CONFIG_LEARNING, | |
48 | TOMOYO_CONFIG_PERMISSIVE, | |
57c2590f | 49 | TOMOYO_CONFIG_ENFORCING, |
eadd99cc TH |
50 | TOMOYO_CONFIG_MAX_MODE, |
51 | TOMOYO_CONFIG_WANT_REJECT_LOG = 64, | |
52 | TOMOYO_CONFIG_WANT_GRANT_LOG = 128, | |
53 | TOMOYO_CONFIG_USE_DEFAULT = 255, | |
cb0abe6a TH |
54 | }; |
55 | ||
b5bc60b4 | 56 | /* Index numbers for entry type. */ |
a230f9e7 TH |
57 | enum tomoyo_policy_id { |
58 | TOMOYO_ID_GROUP, | |
59 | TOMOYO_ID_PATH_GROUP, | |
60 | TOMOYO_ID_NUMBER_GROUP, | |
5448ec4f | 61 | TOMOYO_ID_TRANSITION_CONTROL, |
a230f9e7 | 62 | TOMOYO_ID_AGGREGATOR, |
a230f9e7 TH |
63 | TOMOYO_ID_MANAGER, |
64 | TOMOYO_ID_NAME, | |
65 | TOMOYO_ID_ACL, | |
66 | TOMOYO_ID_DOMAIN, | |
67 | TOMOYO_MAX_POLICY | |
68 | }; | |
69 | ||
2c47ab93 TH |
70 | /* Index numbers for domain's attributes. */ |
71 | enum tomoyo_domain_info_flags_index { | |
72 | /* Quota warnning flag. */ | |
73 | TOMOYO_DIF_QUOTA_WARNED, | |
74 | /* | |
75 | * This domain was unable to create a new domain at | |
76 | * tomoyo_find_next_domain() because the name of the domain to be | |
77 | * created was too long or it could not allocate memory. | |
78 | * More than one process continued execve() without domain transition. | |
79 | */ | |
80 | TOMOYO_DIF_TRANSITION_FAILED, | |
81 | TOMOYO_MAX_DOMAIN_INFO_FLAGS | |
82 | }; | |
83 | ||
b5bc60b4 | 84 | /* Index numbers for group entries. */ |
a230f9e7 TH |
85 | enum tomoyo_group_id { |
86 | TOMOYO_PATH_GROUP, | |
87 | TOMOYO_NUMBER_GROUP, | |
88 | TOMOYO_MAX_GROUP | |
89 | }; | |
90 | ||
b5bc60b4 TH |
91 | /* Index numbers for type of numeric values. */ |
92 | enum tomoyo_value_type { | |
93 | TOMOYO_VALUE_TYPE_INVALID, | |
94 | TOMOYO_VALUE_TYPE_DECIMAL, | |
95 | TOMOYO_VALUE_TYPE_OCTAL, | |
96 | TOMOYO_VALUE_TYPE_HEXADECIMAL, | |
97 | }; | |
4c3e9e2d | 98 | |
b5bc60b4 | 99 | /* Index numbers for domain transition control keywords. */ |
5448ec4f TH |
100 | enum tomoyo_transition_type { |
101 | /* Do not change this order, */ | |
bd03a3e4 TH |
102 | TOMOYO_TRANSITION_CONTROL_NO_RESET, |
103 | TOMOYO_TRANSITION_CONTROL_RESET, | |
5448ec4f TH |
104 | TOMOYO_TRANSITION_CONTROL_NO_INITIALIZE, |
105 | TOMOYO_TRANSITION_CONTROL_INITIALIZE, | |
106 | TOMOYO_TRANSITION_CONTROL_NO_KEEP, | |
107 | TOMOYO_TRANSITION_CONTROL_KEEP, | |
108 | TOMOYO_MAX_TRANSITION_TYPE | |
109 | }; | |
110 | ||
76bb0895 | 111 | /* Index numbers for Access Controls. */ |
084da356 | 112 | enum tomoyo_acl_entry_type_index { |
7ef61233 TH |
113 | TOMOYO_TYPE_PATH_ACL, |
114 | TOMOYO_TYPE_PATH2_ACL, | |
a1f9bb6a | 115 | TOMOYO_TYPE_PATH_NUMBER_ACL, |
75093152 | 116 | TOMOYO_TYPE_MKDEV_ACL, |
2106ccd9 | 117 | TOMOYO_TYPE_MOUNT_ACL, |
084da356 | 118 | }; |
76bb0895 | 119 | |
b5bc60b4 | 120 | /* Index numbers for access controls with one pathname. */ |
084da356 | 121 | enum tomoyo_path_acl_index { |
7ef61233 TH |
122 | TOMOYO_TYPE_EXECUTE, |
123 | TOMOYO_TYPE_READ, | |
124 | TOMOYO_TYPE_WRITE, | |
7c75964f | 125 | TOMOYO_TYPE_APPEND, |
7ef61233 | 126 | TOMOYO_TYPE_UNLINK, |
7c75964f | 127 | TOMOYO_TYPE_GETATTR, |
7ef61233 | 128 | TOMOYO_TYPE_RMDIR, |
7ef61233 TH |
129 | TOMOYO_TYPE_TRUNCATE, |
130 | TOMOYO_TYPE_SYMLINK, | |
7ef61233 | 131 | TOMOYO_TYPE_CHROOT, |
7ef61233 TH |
132 | TOMOYO_TYPE_UMOUNT, |
133 | TOMOYO_MAX_PATH_OPERATION | |
084da356 TH |
134 | }; |
135 | ||
b22b8b9f | 136 | /* Index numbers for /sys/kernel/security/tomoyo/stat interface. */ |
eadd99cc TH |
137 | enum tomoyo_memory_stat_type { |
138 | TOMOYO_MEMORY_POLICY, | |
139 | TOMOYO_MEMORY_AUDIT, | |
140 | TOMOYO_MEMORY_QUERY, | |
141 | TOMOYO_MAX_MEMORY_STAT | |
142 | }; | |
143 | ||
75093152 | 144 | enum tomoyo_mkdev_acl_index { |
a1f9bb6a TH |
145 | TOMOYO_TYPE_MKBLOCK, |
146 | TOMOYO_TYPE_MKCHAR, | |
75093152 | 147 | TOMOYO_MAX_MKDEV_OPERATION |
a1f9bb6a TH |
148 | }; |
149 | ||
b5bc60b4 | 150 | /* Index numbers for access controls with two pathnames. */ |
084da356 | 151 | enum tomoyo_path2_acl_index { |
7ef61233 TH |
152 | TOMOYO_TYPE_LINK, |
153 | TOMOYO_TYPE_RENAME, | |
154 | TOMOYO_TYPE_PIVOT_ROOT, | |
155 | TOMOYO_MAX_PATH2_OPERATION | |
084da356 TH |
156 | }; |
157 | ||
b5bc60b4 | 158 | /* Index numbers for access controls with one pathname and one number. */ |
a1f9bb6a TH |
159 | enum tomoyo_path_number_acl_index { |
160 | TOMOYO_TYPE_CREATE, | |
161 | TOMOYO_TYPE_MKDIR, | |
162 | TOMOYO_TYPE_MKFIFO, | |
163 | TOMOYO_TYPE_MKSOCK, | |
164 | TOMOYO_TYPE_IOCTL, | |
165 | TOMOYO_TYPE_CHMOD, | |
166 | TOMOYO_TYPE_CHOWN, | |
167 | TOMOYO_TYPE_CHGRP, | |
168 | TOMOYO_MAX_PATH_NUMBER_OPERATION | |
169 | }; | |
170 | ||
b5bc60b4 | 171 | /* Index numbers for /sys/kernel/security/tomoyo/ interfaces. */ |
084da356 TH |
172 | enum tomoyo_securityfs_interface_index { |
173 | TOMOYO_DOMAINPOLICY, | |
174 | TOMOYO_EXCEPTIONPOLICY, | |
175 | TOMOYO_DOMAIN_STATUS, | |
176 | TOMOYO_PROCESS_STATUS, | |
b22b8b9f | 177 | TOMOYO_STAT, |
084da356 | 178 | TOMOYO_SELFDOMAIN, |
eadd99cc | 179 | TOMOYO_AUDIT, |
084da356 TH |
180 | TOMOYO_VERSION, |
181 | TOMOYO_PROFILE, | |
17fcfbd9 | 182 | TOMOYO_QUERY, |
084da356 TH |
183 | TOMOYO_MANAGER |
184 | }; | |
9590837b | 185 | |
b5bc60b4 TH |
186 | /* Index numbers for special mount operations. */ |
187 | enum tomoyo_special_mount { | |
188 | TOMOYO_MOUNT_BIND, /* mount --bind /source /dest */ | |
189 | TOMOYO_MOUNT_MOVE, /* mount --move /old /new */ | |
190 | TOMOYO_MOUNT_REMOUNT, /* mount -o remount /dir */ | |
191 | TOMOYO_MOUNT_MAKE_UNBINDABLE, /* mount --make-unbindable /dir */ | |
192 | TOMOYO_MOUNT_MAKE_PRIVATE, /* mount --make-private /dir */ | |
193 | TOMOYO_MOUNT_MAKE_SLAVE, /* mount --make-slave /dir */ | |
194 | TOMOYO_MOUNT_MAKE_SHARED, /* mount --make-shared /dir */ | |
195 | TOMOYO_MAX_SPECIAL_MOUNT | |
196 | }; | |
197 | ||
198 | /* Index numbers for functionality. */ | |
57c2590f TH |
199 | enum tomoyo_mac_index { |
200 | TOMOYO_MAC_FILE_EXECUTE, | |
201 | TOMOYO_MAC_FILE_OPEN, | |
202 | TOMOYO_MAC_FILE_CREATE, | |
203 | TOMOYO_MAC_FILE_UNLINK, | |
7c75964f | 204 | TOMOYO_MAC_FILE_GETATTR, |
57c2590f TH |
205 | TOMOYO_MAC_FILE_MKDIR, |
206 | TOMOYO_MAC_FILE_RMDIR, | |
207 | TOMOYO_MAC_FILE_MKFIFO, | |
208 | TOMOYO_MAC_FILE_MKSOCK, | |
209 | TOMOYO_MAC_FILE_TRUNCATE, | |
210 | TOMOYO_MAC_FILE_SYMLINK, | |
57c2590f TH |
211 | TOMOYO_MAC_FILE_MKBLOCK, |
212 | TOMOYO_MAC_FILE_MKCHAR, | |
213 | TOMOYO_MAC_FILE_LINK, | |
214 | TOMOYO_MAC_FILE_RENAME, | |
215 | TOMOYO_MAC_FILE_CHMOD, | |
216 | TOMOYO_MAC_FILE_CHOWN, | |
217 | TOMOYO_MAC_FILE_CHGRP, | |
218 | TOMOYO_MAC_FILE_IOCTL, | |
219 | TOMOYO_MAC_FILE_CHROOT, | |
220 | TOMOYO_MAC_FILE_MOUNT, | |
221 | TOMOYO_MAC_FILE_UMOUNT, | |
222 | TOMOYO_MAC_FILE_PIVOT_ROOT, | |
223 | TOMOYO_MAX_MAC_INDEX | |
224 | }; | |
225 | ||
b5bc60b4 | 226 | /* Index numbers for category of functionality. */ |
57c2590f TH |
227 | enum tomoyo_mac_category_index { |
228 | TOMOYO_MAC_CATEGORY_FILE, | |
229 | TOMOYO_MAX_MAC_CATEGORY_INDEX | |
230 | }; | |
231 | ||
82e0f001 | 232 | /* |
b5bc60b4 TH |
233 | * Retry this request. Returned by tomoyo_supervisor() if policy violation has |
234 | * occurred in enforcing mode and the userspace daemon decided to retry. | |
82e0f001 | 235 | * |
b5bc60b4 TH |
236 | * We must choose a positive value in order to distinguish "granted" (which is |
237 | * 0) and "rejected" (which is a negative value) and "retry". | |
82e0f001 | 238 | */ |
b5bc60b4 TH |
239 | #define TOMOYO_RETRY_REQUEST 1 |
240 | ||
b22b8b9f TH |
241 | /* Index numbers for /sys/kernel/security/tomoyo/stat interface. */ |
242 | enum tomoyo_policy_stat_type { | |
243 | /* Do not change this order. */ | |
244 | TOMOYO_STAT_POLICY_UPDATES, | |
245 | TOMOYO_STAT_POLICY_LEARNING, /* == TOMOYO_CONFIG_LEARNING */ | |
246 | TOMOYO_STAT_POLICY_PERMISSIVE, /* == TOMOYO_CONFIG_PERMISSIVE */ | |
247 | TOMOYO_STAT_POLICY_ENFORCING, /* == TOMOYO_CONFIG_ENFORCING */ | |
248 | TOMOYO_MAX_POLICY_STAT | |
249 | }; | |
250 | ||
d5ca1725 TH |
251 | /* Index numbers for profile's PREFERENCE values. */ |
252 | enum tomoyo_pref_index { | |
eadd99cc | 253 | TOMOYO_PREF_MAX_AUDIT_LOG, |
d5ca1725 TH |
254 | TOMOYO_PREF_MAX_LEARNING_ENTRY, |
255 | TOMOYO_MAX_PREF | |
256 | }; | |
257 | ||
b5bc60b4 TH |
258 | /********** Structure definitions. **********/ |
259 | ||
260 | /* Common header for holding ACL entries. */ | |
82e0f001 TH |
261 | struct tomoyo_acl_head { |
262 | struct list_head list; | |
263 | bool is_deleted; | |
264 | } __packed; | |
265 | ||
0df7e8b8 TH |
266 | /* Common header for shared entries. */ |
267 | struct tomoyo_shared_acl_head { | |
268 | struct list_head list; | |
269 | atomic_t users; | |
270 | } __packed; | |
271 | ||
bd03a3e4 TH |
272 | struct tomoyo_policy_namespace; |
273 | ||
b5bc60b4 | 274 | /* Structure for request info. */ |
cb0abe6a TH |
275 | struct tomoyo_request_info { |
276 | struct tomoyo_domain_info *domain; | |
cf6e9a64 TH |
277 | /* For holding parameters. */ |
278 | union { | |
279 | struct { | |
280 | const struct tomoyo_path_info *filename; | |
484ca79c TH |
281 | /* For using wildcards at tomoyo_find_next_domain(). */ |
282 | const struct tomoyo_path_info *matched_path; | |
b5bc60b4 | 283 | /* One of values in "enum tomoyo_path_acl_index". */ |
cf6e9a64 TH |
284 | u8 operation; |
285 | } path; | |
286 | struct { | |
287 | const struct tomoyo_path_info *filename1; | |
288 | const struct tomoyo_path_info *filename2; | |
b5bc60b4 | 289 | /* One of values in "enum tomoyo_path2_acl_index". */ |
cf6e9a64 TH |
290 | u8 operation; |
291 | } path2; | |
292 | struct { | |
293 | const struct tomoyo_path_info *filename; | |
294 | unsigned int mode; | |
295 | unsigned int major; | |
296 | unsigned int minor; | |
b5bc60b4 | 297 | /* One of values in "enum tomoyo_mkdev_acl_index". */ |
cf6e9a64 TH |
298 | u8 operation; |
299 | } mkdev; | |
300 | struct { | |
301 | const struct tomoyo_path_info *filename; | |
302 | unsigned long number; | |
b5bc60b4 TH |
303 | /* |
304 | * One of values in | |
305 | * "enum tomoyo_path_number_acl_index". | |
306 | */ | |
cf6e9a64 TH |
307 | u8 operation; |
308 | } path_number; | |
309 | struct { | |
310 | const struct tomoyo_path_info *type; | |
311 | const struct tomoyo_path_info *dir; | |
312 | const struct tomoyo_path_info *dev; | |
313 | unsigned long flags; | |
314 | int need_dev; | |
315 | } mount; | |
316 | } param; | |
317 | u8 param_type; | |
318 | bool granted; | |
17fcfbd9 TH |
319 | u8 retry; |
320 | u8 profile; | |
cb0abe6a | 321 | u8 mode; /* One of tomoyo_mode_index . */ |
57c2590f | 322 | u8 type; |
cb0abe6a TH |
323 | }; |
324 | ||
b5bc60b4 | 325 | /* Structure for holding a token. */ |
9590837b KT |
326 | struct tomoyo_path_info { |
327 | const char *name; | |
328 | u32 hash; /* = full_name_hash(name, strlen(name)) */ | |
9590837b KT |
329 | u16 const_len; /* = tomoyo_const_part_length(name) */ |
330 | bool is_dir; /* = tomoyo_strendswith(name, "/") */ | |
331 | bool is_patterned; /* = tomoyo_path_contains_pattern(name) */ | |
9590837b KT |
332 | }; |
333 | ||
b5bc60b4 | 334 | /* Structure for holding string data. */ |
e2bf6907 | 335 | struct tomoyo_name { |
0df7e8b8 | 336 | struct tomoyo_shared_acl_head head; |
76bb0895 TH |
337 | struct tomoyo_path_info entry; |
338 | }; | |
9590837b | 339 | |
b5bc60b4 | 340 | /* Structure for holding a word. */ |
7762fbff | 341 | struct tomoyo_name_union { |
b5bc60b4 | 342 | /* Either @filename or @group is NULL. */ |
7762fbff | 343 | const struct tomoyo_path_info *filename; |
a98aa4de | 344 | struct tomoyo_group *group; |
7762fbff TH |
345 | }; |
346 | ||
b5bc60b4 | 347 | /* Structure for holding a number. */ |
4c3e9e2d TH |
348 | struct tomoyo_number_union { |
349 | unsigned long values[2]; | |
b5bc60b4 TH |
350 | struct tomoyo_group *group; /* Maybe NULL. */ |
351 | /* One of values in "enum tomoyo_value_type". */ | |
0df7e8b8 | 352 | u8 value_type[2]; |
4c3e9e2d TH |
353 | }; |
354 | ||
a98aa4de TH |
355 | /* Structure for "path_group"/"number_group" directive. */ |
356 | struct tomoyo_group { | |
0df7e8b8 | 357 | struct tomoyo_shared_acl_head head; |
4c3e9e2d TH |
358 | const struct tomoyo_path_info *group_name; |
359 | struct list_head member_list; | |
4c3e9e2d TH |
360 | }; |
361 | ||
7762fbff | 362 | /* Structure for "path_group" directive. */ |
a98aa4de | 363 | struct tomoyo_path_group { |
82e0f001 | 364 | struct tomoyo_acl_head head; |
7762fbff TH |
365 | const struct tomoyo_path_info *member_name; |
366 | }; | |
367 | ||
4c3e9e2d | 368 | /* Structure for "number_group" directive. */ |
a98aa4de | 369 | struct tomoyo_number_group { |
82e0f001 | 370 | struct tomoyo_acl_head head; |
4c3e9e2d TH |
371 | struct tomoyo_number_union number; |
372 | }; | |
373 | ||
b5bc60b4 | 374 | /* Common header for individual entries. */ |
9590837b KT |
375 | struct tomoyo_acl_info { |
376 | struct list_head list; | |
237ab459 | 377 | bool is_deleted; |
b5bc60b4 | 378 | u8 type; /* One of values in "enum tomoyo_acl_entry_type_index". */ |
9590837b KT |
379 | } __packed; |
380 | ||
b5bc60b4 | 381 | /* Structure for domain information. */ |
9590837b KT |
382 | struct tomoyo_domain_info { |
383 | struct list_head list; | |
384 | struct list_head acl_info_list; | |
385 | /* Name of this domain. Never NULL. */ | |
386 | const struct tomoyo_path_info *domainname; | |
bd03a3e4 TH |
387 | /* Namespace for this domain. Never NULL. */ |
388 | struct tomoyo_policy_namespace *ns; | |
9590837b | 389 | u8 profile; /* Profile number to use. */ |
32997144 | 390 | u8 group; /* Group number to use. */ |
a0558fc3 | 391 | bool is_deleted; /* Delete flag. */ |
2c47ab93 | 392 | bool flags[TOMOYO_MAX_DOMAIN_INFO_FLAGS]; |
ec8e6a4e | 393 | atomic_t users; /* Number of referring credentials. */ |
9590837b KT |
394 | }; |
395 | ||
9590837b | 396 | /* |
b5bc60b4 TH |
397 | * Structure for "file execute", "file read", "file write", "file append", |
398 | * "file unlink", "file getattr", "file rmdir", "file truncate", | |
399 | * "file symlink", "file chroot" and "file unmount" directive. | |
9590837b | 400 | */ |
7ef61233 TH |
401 | struct tomoyo_path_acl { |
402 | struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH_ACL */ | |
b5bc60b4 | 403 | u16 perm; /* Bitmask of values in "enum tomoyo_path_acl_index". */ |
7762fbff | 404 | struct tomoyo_name_union name; |
9590837b KT |
405 | }; |
406 | ||
a1f9bb6a | 407 | /* |
b5bc60b4 TH |
408 | * Structure for "file create", "file mkdir", "file mkfifo", "file mksock", |
409 | * "file ioctl", "file chmod", "file chown" and "file chgrp" directive. | |
a1f9bb6a TH |
410 | */ |
411 | struct tomoyo_path_number_acl { | |
412 | struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH_NUMBER_ACL */ | |
b5bc60b4 | 413 | /* Bitmask of values in "enum tomoyo_path_number_acl_index". */ |
a1f9bb6a TH |
414 | u8 perm; |
415 | struct tomoyo_name_union name; | |
416 | struct tomoyo_number_union number; | |
417 | }; | |
418 | ||
b5bc60b4 | 419 | /* Structure for "file mkblock" and "file mkchar" directive. */ |
75093152 TH |
420 | struct tomoyo_mkdev_acl { |
421 | struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_MKDEV_ACL */ | |
b5bc60b4 | 422 | u8 perm; /* Bitmask of values in "enum tomoyo_mkdev_acl_index". */ |
a1f9bb6a TH |
423 | struct tomoyo_name_union name; |
424 | struct tomoyo_number_union mode; | |
425 | struct tomoyo_number_union major; | |
426 | struct tomoyo_number_union minor; | |
427 | }; | |
428 | ||
c3fa109a | 429 | /* |
b5bc60b4 | 430 | * Structure for "file rename", "file link" and "file pivot_root" directive. |
c3fa109a | 431 | */ |
7ef61233 TH |
432 | struct tomoyo_path2_acl { |
433 | struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH2_ACL */ | |
b5bc60b4 | 434 | u8 perm; /* Bitmask of values in "enum tomoyo_path2_acl_index". */ |
7762fbff TH |
435 | struct tomoyo_name_union name1; |
436 | struct tomoyo_name_union name2; | |
9590837b KT |
437 | }; |
438 | ||
b5bc60b4 | 439 | /* Structure for "file mount" directive. */ |
2106ccd9 TH |
440 | struct tomoyo_mount_acl { |
441 | struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_MOUNT_ACL */ | |
2106ccd9 TH |
442 | struct tomoyo_name_union dev_name; |
443 | struct tomoyo_name_union dir_name; | |
444 | struct tomoyo_name_union fs_type; | |
445 | struct tomoyo_number_union flags; | |
446 | }; | |
447 | ||
a238cf5b TH |
448 | /* Structure for holding a line from /sys/kernel/security/tomoyo/ interface. */ |
449 | struct tomoyo_acl_param { | |
450 | char *data; | |
451 | struct list_head *list; | |
bd03a3e4 | 452 | struct tomoyo_policy_namespace *ns; |
a238cf5b TH |
453 | bool is_delete; |
454 | }; | |
455 | ||
0d2171d7 | 456 | #define TOMOYO_MAX_IO_READ_QUEUE 64 |
f23571e8 | 457 | |
c3fa109a | 458 | /* |
f23571e8 TH |
459 | * Structure for reading/writing policy via /sys/kernel/security/tomoyo |
460 | * interfaces. | |
c3fa109a | 461 | */ |
9590837b | 462 | struct tomoyo_io_buffer { |
8fbe71f0 | 463 | void (*read) (struct tomoyo_io_buffer *); |
9590837b | 464 | int (*write) (struct tomoyo_io_buffer *); |
17fcfbd9 | 465 | int (*poll) (struct file *file, poll_table *wait); |
9590837b KT |
466 | /* Exclusive lock for this structure. */ |
467 | struct mutex io_sem; | |
f23571e8 | 468 | char __user *read_user_buf; |
2c47ab93 | 469 | size_t read_user_buf_avail; |
f23571e8 | 470 | struct { |
bd03a3e4 | 471 | struct list_head *ns; |
f23571e8 TH |
472 | struct list_head *domain; |
473 | struct list_head *group; | |
474 | struct list_head *acl; | |
2c47ab93 TH |
475 | size_t avail; |
476 | unsigned int step; | |
477 | unsigned int query_index; | |
f23571e8 | 478 | u16 index; |
32997144 | 479 | u8 acl_group_index; |
f23571e8 TH |
480 | u8 bit; |
481 | u8 w_pos; | |
482 | bool eof; | |
483 | bool print_this_domain_only; | |
bd03a3e4 | 484 | bool print_transition_related_only; |
f23571e8 TH |
485 | const char *w[TOMOYO_MAX_IO_READ_QUEUE]; |
486 | } r; | |
0df7e8b8 | 487 | struct { |
bd03a3e4 | 488 | struct tomoyo_policy_namespace *ns; |
0df7e8b8 TH |
489 | /* The position currently writing to. */ |
490 | struct tomoyo_domain_info *domain; | |
491 | /* Bytes available for writing. */ | |
2c47ab93 | 492 | size_t avail; |
bd03a3e4 | 493 | bool is_delete; |
0df7e8b8 | 494 | } w; |
9590837b KT |
495 | /* Buffer for reading. */ |
496 | char *read_buf; | |
9590837b | 497 | /* Size of read buffer. */ |
2c47ab93 | 498 | size_t readbuf_size; |
9590837b KT |
499 | /* Buffer for writing. */ |
500 | char *write_buf; | |
9590837b | 501 | /* Size of write buffer. */ |
2c47ab93 | 502 | size_t writebuf_size; |
17fcfbd9 | 503 | /* Type of this interface. */ |
2c47ab93 | 504 | enum tomoyo_securityfs_interface_index type; |
2e503bbb TH |
505 | /* Users counter protected by tomoyo_io_buffer_list_lock. */ |
506 | u8 users; | |
507 | /* List for telling GC not to kfree() elements. */ | |
508 | struct list_head list; | |
9590837b KT |
509 | }; |
510 | ||
76bb0895 | 511 | /* |
b5bc60b4 TH |
512 | * Structure for "initialize_domain"/"no_initialize_domain"/"keep_domain"/ |
513 | * "no_keep_domain" keyword. | |
76bb0895 | 514 | */ |
5448ec4f | 515 | struct tomoyo_transition_control { |
82e0f001 | 516 | struct tomoyo_acl_head head; |
5448ec4f | 517 | u8 type; /* One of values in "enum tomoyo_transition_type". */ |
76bb0895 TH |
518 | /* True if the domainname is tomoyo_get_last_name(). */ |
519 | bool is_last_name; | |
5448ec4f TH |
520 | const struct tomoyo_path_info *domainname; /* Maybe NULL */ |
521 | const struct tomoyo_path_info *program; /* Maybe NULL */ | |
76bb0895 TH |
522 | }; |
523 | ||
b5bc60b4 | 524 | /* Structure for "aggregator" keyword. */ |
e2bf6907 | 525 | struct tomoyo_aggregator { |
82e0f001 | 526 | struct tomoyo_acl_head head; |
1084307c TH |
527 | const struct tomoyo_path_info *original_name; |
528 | const struct tomoyo_path_info *aggregated_name; | |
1084307c TH |
529 | }; |
530 | ||
b5bc60b4 | 531 | /* Structure for policy manager. */ |
e2bf6907 | 532 | struct tomoyo_manager { |
82e0f001 TH |
533 | struct tomoyo_acl_head head; |
534 | bool is_domain; /* True if manager is a domainname. */ | |
76bb0895 TH |
535 | /* A path to program or a domainname. */ |
536 | const struct tomoyo_path_info *manager; | |
76bb0895 TH |
537 | }; |
538 | ||
57c2590f TH |
539 | struct tomoyo_preference { |
540 | unsigned int learning_max_entry; | |
541 | bool enforcing_verbose; | |
542 | bool learning_verbose; | |
543 | bool permissive_verbose; | |
544 | }; | |
545 | ||
b5bc60b4 | 546 | /* Structure for /sys/kernel/security/tomnoyo/profile interface. */ |
57c2590f TH |
547 | struct tomoyo_profile { |
548 | const struct tomoyo_path_info *comment; | |
549 | struct tomoyo_preference *learning; | |
550 | struct tomoyo_preference *permissive; | |
551 | struct tomoyo_preference *enforcing; | |
552 | struct tomoyo_preference preference; | |
553 | u8 default_config; | |
554 | u8 config[TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX]; | |
d5ca1725 | 555 | unsigned int pref[TOMOYO_MAX_PREF]; |
57c2590f TH |
556 | }; |
557 | ||
eadd99cc TH |
558 | /* Structure for representing YYYY/MM/DD hh/mm/ss. */ |
559 | struct tomoyo_time { | |
560 | u16 year; | |
561 | u8 month; | |
562 | u8 day; | |
563 | u8 hour; | |
564 | u8 min; | |
565 | u8 sec; | |
566 | }; | |
567 | ||
bd03a3e4 TH |
568 | /* Structure for policy namespace. */ |
569 | struct tomoyo_policy_namespace { | |
570 | /* Profile table. Memory is allocated as needed. */ | |
571 | struct tomoyo_profile *profile_ptr[TOMOYO_MAX_PROFILES]; | |
572 | /* List of "struct tomoyo_group". */ | |
573 | struct list_head group_list[TOMOYO_MAX_GROUP]; | |
574 | /* List of policy. */ | |
575 | struct list_head policy_list[TOMOYO_MAX_POLICY]; | |
576 | /* The global ACL referred by "use_group" keyword. */ | |
577 | struct list_head acl_group[TOMOYO_MAX_ACL_GROUPS]; | |
578 | /* List for connecting to tomoyo_namespace_list list. */ | |
579 | struct list_head namespace_list; | |
580 | /* Profile version. Currently only 20100903 is defined. */ | |
581 | unsigned int profile_version; | |
582 | /* Name of this namespace (e.g. "<kernel>", "</usr/sbin/httpd>" ). */ | |
583 | const char *name; | |
584 | }; | |
585 | ||
76bb0895 TH |
586 | /********** Function prototypes. **********/ |
587 | ||
bd03a3e4 | 588 | void tomoyo_init_policy_namespace(struct tomoyo_policy_namespace *ns); |
c3ef1500 | 589 | bool tomoyo_str_starts(char **src, const char *find); |
c3ef1500 | 590 | const char *tomoyo_get_exe(void); |
c3ef1500 | 591 | void tomoyo_normalize_line(unsigned char *buffer); |
c3ef1500 | 592 | void tomoyo_check_profile(void); |
c3ef1500 | 593 | int tomoyo_open_control(const u8 type, struct file *file); |
0df7e8b8 | 594 | int tomoyo_close_control(struct tomoyo_io_buffer *head); |
0849e3ba | 595 | int tomoyo_poll_control(struct file *file, poll_table *wait); |
2c47ab93 TH |
596 | ssize_t tomoyo_read_control(struct tomoyo_io_buffer *head, char __user *buffer, |
597 | const int buffer_len); | |
598 | ssize_t tomoyo_write_control(struct tomoyo_io_buffer *head, | |
599 | const char __user *buffer, const int buffer_len); | |
c3ef1500 | 600 | bool tomoyo_domain_quota_is_ok(struct tomoyo_request_info *r); |
c3ef1500 | 601 | void tomoyo_warn_oom(const char *function); |
484ca79c TH |
602 | const struct tomoyo_path_info * |
603 | tomoyo_compare_name_union(const struct tomoyo_path_info *name, | |
604 | const struct tomoyo_name_union *ptr); | |
2106ccd9 TH |
605 | bool tomoyo_compare_number_union(const unsigned long value, |
606 | const struct tomoyo_number_union *ptr); | |
bd03a3e4 TH |
607 | int tomoyo_get_mode(const struct tomoyo_policy_namespace *ns, const u8 profile, |
608 | const u8 index); | |
f23571e8 | 609 | void tomoyo_io_printf(struct tomoyo_io_buffer *head, const char *fmt, ...) |
9590837b | 610 | __attribute__ ((format(printf, 2, 3))); |
75093152 | 611 | bool tomoyo_correct_domain(const unsigned char *domainname); |
75093152 TH |
612 | bool tomoyo_correct_path(const char *filename); |
613 | bool tomoyo_correct_word(const char *string); | |
75093152 | 614 | bool tomoyo_domain_def(const unsigned char *buffer); |
a238cf5b | 615 | bool tomoyo_parse_name_union(struct tomoyo_acl_param *param, |
7762fbff | 616 | struct tomoyo_name_union *ptr); |
484ca79c TH |
617 | const struct tomoyo_path_info * |
618 | tomoyo_path_matches_group(const struct tomoyo_path_info *pathname, | |
619 | const struct tomoyo_group *group); | |
4c3e9e2d TH |
620 | bool tomoyo_number_matches_group(const unsigned long min, |
621 | const unsigned long max, | |
a98aa4de | 622 | const struct tomoyo_group *group); |
9590837b KT |
623 | bool tomoyo_path_matches_pattern(const struct tomoyo_path_info *filename, |
624 | const struct tomoyo_path_info *pattern); | |
a238cf5b TH |
625 | bool tomoyo_parse_number_union(struct tomoyo_acl_param *param, |
626 | struct tomoyo_number_union *ptr); | |
7762fbff | 627 | bool tomoyo_tokenize(char *buffer, char *w[], size_t size); |
9590837b | 628 | bool tomoyo_verbose_mode(const struct tomoyo_domain_info *domain); |
2106ccd9 | 629 | int tomoyo_init_request_info(struct tomoyo_request_info *r, |
57c2590f TH |
630 | struct tomoyo_domain_info *domain, |
631 | const u8 index); | |
b5bc60b4 TH |
632 | int tomoyo_mount_permission(char *dev_name, struct path *path, |
633 | const char *type, unsigned long flags, | |
634 | void *data_page); | |
a238cf5b TH |
635 | int tomoyo_write_aggregator(struct tomoyo_acl_param *param); |
636 | int tomoyo_write_transition_control(struct tomoyo_acl_param *param, | |
5448ec4f | 637 | const u8 type); |
a238cf5b TH |
638 | int tomoyo_write_file(struct tomoyo_acl_param *param); |
639 | int tomoyo_write_group(struct tomoyo_acl_param *param, const u8 type); | |
17fcfbd9 TH |
640 | int tomoyo_supervisor(struct tomoyo_request_info *r, const char *fmt, ...) |
641 | __attribute__ ((format(printf, 2, 3))); | |
9590837b | 642 | struct tomoyo_domain_info *tomoyo_find_domain(const char *domainname); |
e2bf6907 | 643 | struct tomoyo_domain_info *tomoyo_assign_domain(const char *domainname, |
bd03a3e4 TH |
644 | const bool transit); |
645 | struct tomoyo_profile *tomoyo_profile(const struct tomoyo_policy_namespace *ns, | |
646 | const u8 profile); | |
647 | struct tomoyo_policy_namespace *tomoyo_assign_namespace | |
648 | (const char *domainname); | |
a238cf5b TH |
649 | struct tomoyo_group *tomoyo_get_group(struct tomoyo_acl_param *param, |
650 | const u8 idx); | |
9590837b KT |
651 | unsigned int tomoyo_check_flags(const struct tomoyo_domain_info *domain, |
652 | const u8 index); | |
9590837b | 653 | void tomoyo_fill_path_info(struct tomoyo_path_info *ptr); |
9590837b | 654 | void tomoyo_load_policy(const char *filename); |
4c3e9e2d | 655 | void tomoyo_put_number_union(struct tomoyo_number_union *ptr); |
c8c57e84 | 656 | char *tomoyo_encode(const char *str); |
0617c7ff | 657 | char *tomoyo_realpath_nofollow(const char *pathname); |
76bb0895 | 658 | char *tomoyo_realpath_from_path(struct path *path); |
76bb0895 | 659 | bool tomoyo_memory_ok(void *ptr); |
9e4b50e9 | 660 | void *tomoyo_commit_ok(void *data, const unsigned int size); |
76bb0895 | 661 | const struct tomoyo_path_info *tomoyo_get_name(const char *name); |
b22b8b9f TH |
662 | void tomoyo_convert_time(time_t time, struct tomoyo_time *stamp); |
663 | void tomoyo_update_stat(const u8 index); | |
c3ef1500 | 664 | void __init tomoyo_mm_init(void); |
05336dee | 665 | int tomoyo_path_permission(struct tomoyo_request_info *r, u8 operation, |
76bb0895 TH |
666 | const struct tomoyo_path_info *filename); |
667 | int tomoyo_check_open_permission(struct tomoyo_domain_info *domain, | |
668 | struct path *path, const int flag); | |
a1f9bb6a TH |
669 | int tomoyo_path_number_perm(const u8 operation, struct path *path, |
670 | unsigned long number); | |
75093152 TH |
671 | int tomoyo_mkdev_perm(const u8 operation, struct path *path, |
672 | const unsigned int mode, unsigned int dev); | |
97d6931e TH |
673 | int tomoyo_path_perm(const u8 operation, struct path *path); |
674 | int tomoyo_path2_perm(const u8 operation, struct path *path1, | |
675 | struct path *path2); | |
76bb0895 | 676 | int tomoyo_find_next_domain(struct linux_binprm *bprm); |
a1f9bb6a TH |
677 | void tomoyo_print_ulong(char *buffer, const int buffer_len, |
678 | const unsigned long value, const u8 type); | |
7762fbff | 679 | void tomoyo_put_name_union(struct tomoyo_name_union *ptr); |
2e503bbb | 680 | void tomoyo_notify_gc(struct tomoyo_io_buffer *head, const bool is_register); |
847b173e | 681 | void tomoyo_memory_free(void *ptr); |
237ab459 | 682 | int tomoyo_update_domain(struct tomoyo_acl_info *new_entry, const int size, |
a238cf5b | 683 | struct tomoyo_acl_param *param, |
237ab459 TH |
684 | bool (*check_duplicate) (const struct tomoyo_acl_info |
685 | *, | |
686 | const struct tomoyo_acl_info | |
687 | *), | |
688 | bool (*merge_duplicate) (struct tomoyo_acl_info *, | |
689 | struct tomoyo_acl_info *, | |
690 | const bool)); | |
36f5e1ff | 691 | int tomoyo_update_policy(struct tomoyo_acl_head *new_entry, const int size, |
a238cf5b | 692 | struct tomoyo_acl_param *param, |
36f5e1ff TH |
693 | bool (*check_duplicate) (const struct tomoyo_acl_head |
694 | *, | |
695 | const struct tomoyo_acl_head | |
696 | *)); | |
99a85259 | 697 | void tomoyo_check_acl(struct tomoyo_request_info *r, |
484ca79c | 698 | bool (*check_entry) (struct tomoyo_request_info *, |
99a85259 | 699 | const struct tomoyo_acl_info *)); |
a238cf5b TH |
700 | char *tomoyo_read_token(struct tomoyo_acl_param *param); |
701 | bool tomoyo_permstr(const char *string, const char *keyword); | |
237ab459 | 702 | |
eadd99cc | 703 | const char *tomoyo_yesno(const unsigned int value); |
bd03a3e4 TH |
704 | void tomoyo_write_log(struct tomoyo_request_info *r, const char *fmt, ...) |
705 | __attribute__ ((format(printf, 2, 3))); | |
eadd99cc TH |
706 | void tomoyo_write_log2(struct tomoyo_request_info *r, int len, const char *fmt, |
707 | va_list args); | |
708 | void tomoyo_read_log(struct tomoyo_io_buffer *head); | |
709 | int tomoyo_poll_log(struct file *file, poll_table *wait); | |
710 | char *tomoyo_init_log(struct tomoyo_request_info *r, int len, const char *fmt, | |
711 | va_list args); | |
712 | ||
76bb0895 TH |
713 | /********** External variable definitions. **********/ |
714 | ||
715 | /* Lock for GC. */ | |
716 | extern struct srcu_struct tomoyo_ss; | |
717 | ||
718 | /* The list for "struct tomoyo_domain_info". */ | |
719 | extern struct list_head tomoyo_domain_list; | |
720 | ||
847b173e | 721 | extern struct list_head tomoyo_name_list[TOMOYO_MAX_HASH]; |
847b173e | 722 | |
76bb0895 TH |
723 | /* Lock for protecting policy. */ |
724 | extern struct mutex tomoyo_policy_lock; | |
725 | ||
726 | /* Has /sbin/init started? */ | |
727 | extern bool tomoyo_policy_loaded; | |
728 | ||
729 | /* The kernel's domain. */ | |
730 | extern struct tomoyo_domain_info tomoyo_kernel_domain; | |
bd03a3e4 TH |
731 | extern struct tomoyo_policy_namespace tomoyo_kernel_namespace; |
732 | extern struct list_head tomoyo_namespace_list; | |
76bb0895 | 733 | |
2c47ab93 TH |
734 | extern const char * const tomoyo_mac_keywords[TOMOYO_MAX_MAC_INDEX + |
735 | TOMOYO_MAX_MAC_CATEGORY_INDEX]; | |
736 | extern const char * const tomoyo_path_keyword[TOMOYO_MAX_PATH_OPERATION]; | |
737 | extern const u8 tomoyo_index2category[TOMOYO_MAX_MAC_INDEX]; | |
738 | ||
71c28236 | 739 | |
0d2171d7 TH |
740 | extern const u8 tomoyo_pnnn2mac[TOMOYO_MAX_MKDEV_OPERATION]; |
741 | extern const u8 tomoyo_pp2mac[TOMOYO_MAX_PATH2_OPERATION]; | |
742 | extern const u8 tomoyo_pn2mac[TOMOYO_MAX_PATH_NUMBER_OPERATION]; | |
743 | ||
2c47ab93 | 744 | extern const char * const tomoyo_dif[TOMOYO_MAX_DOMAIN_INFO_FLAGS]; |
eadd99cc TH |
745 | extern const char * const tomoyo_mode[TOMOYO_CONFIG_MAX_MODE]; |
746 | extern unsigned int tomoyo_memory_quota[TOMOYO_MAX_MEMORY_STAT]; | |
747 | extern unsigned int tomoyo_memory_used[TOMOYO_MAX_MEMORY_STAT]; | |
17fcfbd9 | 748 | |
76bb0895 TH |
749 | /********** Inlined functions. **********/ |
750 | ||
b5bc60b4 TH |
751 | /** |
752 | * tomoyo_read_lock - Take lock for protecting policy. | |
753 | * | |
754 | * Returns index number for tomoyo_read_unlock(). | |
755 | */ | |
76bb0895 TH |
756 | static inline int tomoyo_read_lock(void) |
757 | { | |
758 | return srcu_read_lock(&tomoyo_ss); | |
759 | } | |
760 | ||
b5bc60b4 TH |
761 | /** |
762 | * tomoyo_read_unlock - Release lock for protecting policy. | |
763 | * | |
764 | * @idx: Index number returned by tomoyo_read_lock(). | |
765 | * | |
766 | * Returns nothing. | |
767 | */ | |
76bb0895 TH |
768 | static inline void tomoyo_read_unlock(int idx) |
769 | { | |
770 | srcu_read_unlock(&tomoyo_ss, idx); | |
771 | } | |
772 | ||
b5bc60b4 TH |
773 | /** |
774 | * tomoyo_pathcmp - strcmp() for "struct tomoyo_path_info" structure. | |
775 | * | |
776 | * @a: Pointer to "struct tomoyo_path_info". | |
777 | * @b: Pointer to "struct tomoyo_path_info". | |
778 | * | |
779 | * Returns true if @a == @b, false otherwise. | |
780 | */ | |
9590837b KT |
781 | static inline bool tomoyo_pathcmp(const struct tomoyo_path_info *a, |
782 | const struct tomoyo_path_info *b) | |
783 | { | |
784 | return a->hash != b->hash || strcmp(a->name, b->name); | |
785 | } | |
786 | ||
b5bc60b4 TH |
787 | /** |
788 | * tomoyo_put_name - Drop reference on "struct tomoyo_name". | |
789 | * | |
790 | * @name: Pointer to "struct tomoyo_path_info". Maybe NULL. | |
791 | * | |
792 | * Returns nothing. | |
793 | */ | |
76bb0895 TH |
794 | static inline void tomoyo_put_name(const struct tomoyo_path_info *name) |
795 | { | |
796 | if (name) { | |
e2bf6907 TH |
797 | struct tomoyo_name *ptr = |
798 | container_of(name, typeof(*ptr), entry); | |
0df7e8b8 | 799 | atomic_dec(&ptr->head.users); |
76bb0895 TH |
800 | } |
801 | } | |
9590837b | 802 | |
b5bc60b4 TH |
803 | /** |
804 | * tomoyo_put_group - Drop reference on "struct tomoyo_group". | |
805 | * | |
806 | * @group: Pointer to "struct tomoyo_group". Maybe NULL. | |
807 | * | |
808 | * Returns nothing. | |
809 | */ | |
a98aa4de | 810 | static inline void tomoyo_put_group(struct tomoyo_group *group) |
4c3e9e2d TH |
811 | { |
812 | if (group) | |
0df7e8b8 | 813 | atomic_dec(&group->head.users); |
4c3e9e2d TH |
814 | } |
815 | ||
b5bc60b4 TH |
816 | /** |
817 | * tomoyo_domain - Get "struct tomoyo_domain_info" for current thread. | |
818 | * | |
819 | * Returns pointer to "struct tomoyo_domain_info" for current thread. | |
820 | */ | |
76bb0895 TH |
821 | static inline struct tomoyo_domain_info *tomoyo_domain(void) |
822 | { | |
823 | return current_cred()->security; | |
824 | } | |
9590837b | 825 | |
b5bc60b4 TH |
826 | /** |
827 | * tomoyo_real_domain - Get "struct tomoyo_domain_info" for specified thread. | |
828 | * | |
829 | * @task: Pointer to "struct task_struct". | |
830 | * | |
831 | * Returns pointer to "struct tomoyo_security" for specified thread. | |
832 | */ | |
76bb0895 TH |
833 | static inline struct tomoyo_domain_info *tomoyo_real_domain(struct task_struct |
834 | *task) | |
835 | { | |
836 | return task_cred_xxx(task, security); | |
837 | } | |
9590837b | 838 | |
b5bc60b4 TH |
839 | /** |
840 | * tomoyo_same_name_union - Check for duplicated "struct tomoyo_name_union" entry. | |
841 | * | |
842 | * @a: Pointer to "struct tomoyo_name_union". | |
843 | * @b: Pointer to "struct tomoyo_name_union". | |
844 | * | |
845 | * Returns true if @a == @b, false otherwise. | |
846 | */ | |
75093152 | 847 | static inline bool tomoyo_same_name_union |
b5bc60b4 | 848 | (const struct tomoyo_name_union *a, const struct tomoyo_name_union *b) |
7762fbff | 849 | { |
0df7e8b8 | 850 | return a->filename == b->filename && a->group == b->group; |
7762fbff TH |
851 | } |
852 | ||
b5bc60b4 TH |
853 | /** |
854 | * tomoyo_same_number_union - Check for duplicated "struct tomoyo_number_union" entry. | |
855 | * | |
856 | * @a: Pointer to "struct tomoyo_number_union". | |
857 | * @b: Pointer to "struct tomoyo_number_union". | |
858 | * | |
859 | * Returns true if @a == @b, false otherwise. | |
860 | */ | |
75093152 | 861 | static inline bool tomoyo_same_number_union |
b5bc60b4 | 862 | (const struct tomoyo_number_union *a, const struct tomoyo_number_union *b) |
4c3e9e2d | 863 | { |
b5bc60b4 | 864 | return a->values[0] == b->values[0] && a->values[1] == b->values[1] && |
0df7e8b8 TH |
865 | a->group == b->group && a->value_type[0] == b->value_type[0] && |
866 | a->value_type[1] == b->value_type[1]; | |
4c3e9e2d TH |
867 | } |
868 | ||
bd03a3e4 TH |
869 | /** |
870 | * tomoyo_current_namespace - Get "struct tomoyo_policy_namespace" for current thread. | |
871 | * | |
872 | * Returns pointer to "struct tomoyo_policy_namespace" for current thread. | |
873 | */ | |
874 | static inline struct tomoyo_policy_namespace *tomoyo_current_namespace(void) | |
875 | { | |
876 | return tomoyo_domain()->ns; | |
877 | } | |
878 | ||
eadd99cc TH |
879 | #if defined(CONFIG_SLOB) |
880 | ||
881 | /** | |
882 | * tomoyo_round2 - Round up to power of 2 for calculating memory usage. | |
883 | * | |
884 | * @size: Size to be rounded up. | |
885 | * | |
886 | * Returns @size. | |
887 | * | |
888 | * Since SLOB does not round up, this function simply returns @size. | |
889 | */ | |
890 | static inline int tomoyo_round2(size_t size) | |
891 | { | |
892 | return size; | |
893 | } | |
894 | ||
895 | #else | |
896 | ||
897 | /** | |
898 | * tomoyo_round2 - Round up to power of 2 for calculating memory usage. | |
899 | * | |
900 | * @size: Size to be rounded up. | |
901 | * | |
902 | * Returns rounded size. | |
903 | * | |
904 | * Strictly speaking, SLAB may be able to allocate (e.g.) 96 bytes instead of | |
905 | * (e.g.) 128 bytes. | |
906 | */ | |
907 | static inline int tomoyo_round2(size_t size) | |
908 | { | |
909 | #if PAGE_SIZE == 4096 | |
910 | size_t bsize = 32; | |
911 | #else | |
912 | size_t bsize = 64; | |
913 | #endif | |
914 | if (!size) | |
915 | return 0; | |
916 | while (size > bsize) | |
917 | bsize <<= 1; | |
918 | return bsize; | |
919 | } | |
920 | ||
921 | #endif | |
922 | ||
9590837b KT |
923 | /** |
924 | * list_for_each_cookie - iterate over a list with cookie. | |
925 | * @pos: the &struct list_head to use as a loop cursor. | |
9590837b | 926 | * @head: the head for your list. |
9590837b | 927 | */ |
475e6fa3 TH |
928 | #define list_for_each_cookie(pos, head) \ |
929 | if (!pos) \ | |
930 | pos = srcu_dereference((head)->next, &tomoyo_ss); \ | |
931 | for ( ; pos != (head); pos = srcu_dereference(pos->next, &tomoyo_ss)) | |
fdb8ebb7 | 932 | |
9590837b | 933 | #endif /* !defined(_SECURITY_TOMOYO_COMMON_H) */ |