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> |
2066a361 TH |
24 | #include <linux/binfmts.h> |
25 | #include <linux/highmem.h> | |
76bb0895 TH |
26 | |
27 | /********** Constants definitions. **********/ | |
28 | ||
29 | /* | |
30 | * TOMOYO uses this hash only when appending a string into the string | |
31 | * table. Frequency of appending strings is very low. So we don't need | |
32 | * large (e.g. 64k) hash size. 256 will be sufficient. | |
33 | */ | |
34 | #define TOMOYO_HASH_BITS 8 | |
35 | #define TOMOYO_MAX_HASH (1u<<TOMOYO_HASH_BITS) | |
36 | ||
c8c57e84 | 37 | #define TOMOYO_EXEC_TMPSIZE 4096 |
76bb0895 TH |
38 | |
39 | /* Profile number is an integer between 0 and 255. */ | |
40 | #define TOMOYO_MAX_PROFILES 256 | |
41 | ||
32997144 TH |
42 | /* Group number is an integer between 0 and 255. */ |
43 | #define TOMOYO_MAX_ACL_GROUPS 256 | |
44 | ||
2066a361 TH |
45 | /* Index numbers for "struct tomoyo_condition". */ |
46 | enum tomoyo_conditions_index { | |
47 | TOMOYO_TASK_UID, /* current_uid() */ | |
48 | TOMOYO_TASK_EUID, /* current_euid() */ | |
49 | TOMOYO_TASK_SUID, /* current_suid() */ | |
50 | TOMOYO_TASK_FSUID, /* current_fsuid() */ | |
51 | TOMOYO_TASK_GID, /* current_gid() */ | |
52 | TOMOYO_TASK_EGID, /* current_egid() */ | |
53 | TOMOYO_TASK_SGID, /* current_sgid() */ | |
54 | TOMOYO_TASK_FSGID, /* current_fsgid() */ | |
55 | TOMOYO_TASK_PID, /* sys_getpid() */ | |
56 | TOMOYO_TASK_PPID, /* sys_getppid() */ | |
8761afd4 TH |
57 | TOMOYO_TYPE_IS_SOCKET, /* S_IFSOCK */ |
58 | TOMOYO_TYPE_IS_SYMLINK, /* S_IFLNK */ | |
59 | TOMOYO_TYPE_IS_FILE, /* S_IFREG */ | |
60 | TOMOYO_TYPE_IS_BLOCK_DEV, /* S_IFBLK */ | |
61 | TOMOYO_TYPE_IS_DIRECTORY, /* S_IFDIR */ | |
62 | TOMOYO_TYPE_IS_CHAR_DEV, /* S_IFCHR */ | |
63 | TOMOYO_TYPE_IS_FIFO, /* S_IFIFO */ | |
64 | TOMOYO_MODE_SETUID, /* S_ISUID */ | |
65 | TOMOYO_MODE_SETGID, /* S_ISGID */ | |
66 | TOMOYO_MODE_STICKY, /* S_ISVTX */ | |
67 | TOMOYO_MODE_OWNER_READ, /* S_IRUSR */ | |
68 | TOMOYO_MODE_OWNER_WRITE, /* S_IWUSR */ | |
69 | TOMOYO_MODE_OWNER_EXECUTE, /* S_IXUSR */ | |
70 | TOMOYO_MODE_GROUP_READ, /* S_IRGRP */ | |
71 | TOMOYO_MODE_GROUP_WRITE, /* S_IWGRP */ | |
72 | TOMOYO_MODE_GROUP_EXECUTE, /* S_IXGRP */ | |
73 | TOMOYO_MODE_OTHERS_READ, /* S_IROTH */ | |
74 | TOMOYO_MODE_OTHERS_WRITE, /* S_IWOTH */ | |
75 | TOMOYO_MODE_OTHERS_EXECUTE, /* S_IXOTH */ | |
2ca9bf45 TH |
76 | TOMOYO_EXEC_REALPATH, |
77 | TOMOYO_SYMLINK_TARGET, | |
8761afd4 TH |
78 | TOMOYO_PATH1_UID, |
79 | TOMOYO_PATH1_GID, | |
80 | TOMOYO_PATH1_INO, | |
81 | TOMOYO_PATH1_MAJOR, | |
82 | TOMOYO_PATH1_MINOR, | |
83 | TOMOYO_PATH1_PERM, | |
84 | TOMOYO_PATH1_TYPE, | |
85 | TOMOYO_PATH1_DEV_MAJOR, | |
86 | TOMOYO_PATH1_DEV_MINOR, | |
87 | TOMOYO_PATH2_UID, | |
88 | TOMOYO_PATH2_GID, | |
89 | TOMOYO_PATH2_INO, | |
90 | TOMOYO_PATH2_MAJOR, | |
91 | TOMOYO_PATH2_MINOR, | |
92 | TOMOYO_PATH2_PERM, | |
93 | TOMOYO_PATH2_TYPE, | |
94 | TOMOYO_PATH2_DEV_MAJOR, | |
95 | TOMOYO_PATH2_DEV_MINOR, | |
96 | TOMOYO_PATH1_PARENT_UID, | |
97 | TOMOYO_PATH1_PARENT_GID, | |
98 | TOMOYO_PATH1_PARENT_INO, | |
99 | TOMOYO_PATH1_PARENT_PERM, | |
100 | TOMOYO_PATH2_PARENT_UID, | |
101 | TOMOYO_PATH2_PARENT_GID, | |
102 | TOMOYO_PATH2_PARENT_INO, | |
103 | TOMOYO_PATH2_PARENT_PERM, | |
2066a361 TH |
104 | TOMOYO_MAX_CONDITION_KEYWORD, |
105 | TOMOYO_NUMBER_UNION, | |
2ca9bf45 | 106 | TOMOYO_NAME_UNION, |
2066a361 TH |
107 | }; |
108 | ||
8761afd4 TH |
109 | |
110 | /* Index numbers for stat(). */ | |
111 | enum tomoyo_path_stat_index { | |
112 | /* Do not change this order. */ | |
113 | TOMOYO_PATH1, | |
114 | TOMOYO_PATH1_PARENT, | |
115 | TOMOYO_PATH2, | |
116 | TOMOYO_PATH2_PARENT, | |
117 | TOMOYO_MAX_PATH_STAT | |
118 | }; | |
119 | ||
b5bc60b4 | 120 | /* Index numbers for operation mode. */ |
cb0abe6a TH |
121 | enum tomoyo_mode_index { |
122 | TOMOYO_CONFIG_DISABLED, | |
123 | TOMOYO_CONFIG_LEARNING, | |
124 | TOMOYO_CONFIG_PERMISSIVE, | |
57c2590f | 125 | TOMOYO_CONFIG_ENFORCING, |
eadd99cc TH |
126 | TOMOYO_CONFIG_MAX_MODE, |
127 | TOMOYO_CONFIG_WANT_REJECT_LOG = 64, | |
128 | TOMOYO_CONFIG_WANT_GRANT_LOG = 128, | |
129 | TOMOYO_CONFIG_USE_DEFAULT = 255, | |
cb0abe6a TH |
130 | }; |
131 | ||
b5bc60b4 | 132 | /* Index numbers for entry type. */ |
a230f9e7 TH |
133 | enum tomoyo_policy_id { |
134 | TOMOYO_ID_GROUP, | |
135 | TOMOYO_ID_PATH_GROUP, | |
136 | TOMOYO_ID_NUMBER_GROUP, | |
5448ec4f | 137 | TOMOYO_ID_TRANSITION_CONTROL, |
a230f9e7 | 138 | TOMOYO_ID_AGGREGATOR, |
a230f9e7 | 139 | TOMOYO_ID_MANAGER, |
2066a361 | 140 | TOMOYO_ID_CONDITION, |
a230f9e7 TH |
141 | TOMOYO_ID_NAME, |
142 | TOMOYO_ID_ACL, | |
143 | TOMOYO_ID_DOMAIN, | |
144 | TOMOYO_MAX_POLICY | |
145 | }; | |
146 | ||
2c47ab93 TH |
147 | /* Index numbers for domain's attributes. */ |
148 | enum tomoyo_domain_info_flags_index { | |
149 | /* Quota warnning flag. */ | |
150 | TOMOYO_DIF_QUOTA_WARNED, | |
151 | /* | |
152 | * This domain was unable to create a new domain at | |
153 | * tomoyo_find_next_domain() because the name of the domain to be | |
154 | * created was too long or it could not allocate memory. | |
155 | * More than one process continued execve() without domain transition. | |
156 | */ | |
157 | TOMOYO_DIF_TRANSITION_FAILED, | |
158 | TOMOYO_MAX_DOMAIN_INFO_FLAGS | |
159 | }; | |
160 | ||
b5bc60b4 | 161 | /* Index numbers for group entries. */ |
a230f9e7 TH |
162 | enum tomoyo_group_id { |
163 | TOMOYO_PATH_GROUP, | |
164 | TOMOYO_NUMBER_GROUP, | |
165 | TOMOYO_MAX_GROUP | |
166 | }; | |
167 | ||
b5bc60b4 TH |
168 | /* Index numbers for type of numeric values. */ |
169 | enum tomoyo_value_type { | |
170 | TOMOYO_VALUE_TYPE_INVALID, | |
171 | TOMOYO_VALUE_TYPE_DECIMAL, | |
172 | TOMOYO_VALUE_TYPE_OCTAL, | |
173 | TOMOYO_VALUE_TYPE_HEXADECIMAL, | |
174 | }; | |
4c3e9e2d | 175 | |
b5bc60b4 | 176 | /* Index numbers for domain transition control keywords. */ |
5448ec4f TH |
177 | enum tomoyo_transition_type { |
178 | /* Do not change this order, */ | |
bd03a3e4 TH |
179 | TOMOYO_TRANSITION_CONTROL_NO_RESET, |
180 | TOMOYO_TRANSITION_CONTROL_RESET, | |
5448ec4f TH |
181 | TOMOYO_TRANSITION_CONTROL_NO_INITIALIZE, |
182 | TOMOYO_TRANSITION_CONTROL_INITIALIZE, | |
183 | TOMOYO_TRANSITION_CONTROL_NO_KEEP, | |
184 | TOMOYO_TRANSITION_CONTROL_KEEP, | |
185 | TOMOYO_MAX_TRANSITION_TYPE | |
186 | }; | |
187 | ||
76bb0895 | 188 | /* Index numbers for Access Controls. */ |
084da356 | 189 | enum tomoyo_acl_entry_type_index { |
7ef61233 TH |
190 | TOMOYO_TYPE_PATH_ACL, |
191 | TOMOYO_TYPE_PATH2_ACL, | |
a1f9bb6a | 192 | TOMOYO_TYPE_PATH_NUMBER_ACL, |
75093152 | 193 | TOMOYO_TYPE_MKDEV_ACL, |
2106ccd9 | 194 | TOMOYO_TYPE_MOUNT_ACL, |
084da356 | 195 | }; |
76bb0895 | 196 | |
b5bc60b4 | 197 | /* Index numbers for access controls with one pathname. */ |
084da356 | 198 | enum tomoyo_path_acl_index { |
7ef61233 TH |
199 | TOMOYO_TYPE_EXECUTE, |
200 | TOMOYO_TYPE_READ, | |
201 | TOMOYO_TYPE_WRITE, | |
7c75964f | 202 | TOMOYO_TYPE_APPEND, |
7ef61233 | 203 | TOMOYO_TYPE_UNLINK, |
7c75964f | 204 | TOMOYO_TYPE_GETATTR, |
7ef61233 | 205 | TOMOYO_TYPE_RMDIR, |
7ef61233 TH |
206 | TOMOYO_TYPE_TRUNCATE, |
207 | TOMOYO_TYPE_SYMLINK, | |
7ef61233 | 208 | TOMOYO_TYPE_CHROOT, |
7ef61233 TH |
209 | TOMOYO_TYPE_UMOUNT, |
210 | TOMOYO_MAX_PATH_OPERATION | |
084da356 TH |
211 | }; |
212 | ||
b22b8b9f | 213 | /* Index numbers for /sys/kernel/security/tomoyo/stat interface. */ |
eadd99cc TH |
214 | enum tomoyo_memory_stat_type { |
215 | TOMOYO_MEMORY_POLICY, | |
216 | TOMOYO_MEMORY_AUDIT, | |
217 | TOMOYO_MEMORY_QUERY, | |
218 | TOMOYO_MAX_MEMORY_STAT | |
219 | }; | |
220 | ||
75093152 | 221 | enum tomoyo_mkdev_acl_index { |
a1f9bb6a TH |
222 | TOMOYO_TYPE_MKBLOCK, |
223 | TOMOYO_TYPE_MKCHAR, | |
75093152 | 224 | TOMOYO_MAX_MKDEV_OPERATION |
a1f9bb6a TH |
225 | }; |
226 | ||
b5bc60b4 | 227 | /* Index numbers for access controls with two pathnames. */ |
084da356 | 228 | enum tomoyo_path2_acl_index { |
7ef61233 TH |
229 | TOMOYO_TYPE_LINK, |
230 | TOMOYO_TYPE_RENAME, | |
231 | TOMOYO_TYPE_PIVOT_ROOT, | |
232 | TOMOYO_MAX_PATH2_OPERATION | |
084da356 TH |
233 | }; |
234 | ||
b5bc60b4 | 235 | /* Index numbers for access controls with one pathname and one number. */ |
a1f9bb6a TH |
236 | enum tomoyo_path_number_acl_index { |
237 | TOMOYO_TYPE_CREATE, | |
238 | TOMOYO_TYPE_MKDIR, | |
239 | TOMOYO_TYPE_MKFIFO, | |
240 | TOMOYO_TYPE_MKSOCK, | |
241 | TOMOYO_TYPE_IOCTL, | |
242 | TOMOYO_TYPE_CHMOD, | |
243 | TOMOYO_TYPE_CHOWN, | |
244 | TOMOYO_TYPE_CHGRP, | |
245 | TOMOYO_MAX_PATH_NUMBER_OPERATION | |
246 | }; | |
247 | ||
b5bc60b4 | 248 | /* Index numbers for /sys/kernel/security/tomoyo/ interfaces. */ |
084da356 TH |
249 | enum tomoyo_securityfs_interface_index { |
250 | TOMOYO_DOMAINPOLICY, | |
251 | TOMOYO_EXCEPTIONPOLICY, | |
084da356 | 252 | TOMOYO_PROCESS_STATUS, |
b22b8b9f | 253 | TOMOYO_STAT, |
084da356 | 254 | TOMOYO_SELFDOMAIN, |
eadd99cc | 255 | TOMOYO_AUDIT, |
084da356 TH |
256 | TOMOYO_VERSION, |
257 | TOMOYO_PROFILE, | |
17fcfbd9 | 258 | TOMOYO_QUERY, |
084da356 TH |
259 | TOMOYO_MANAGER |
260 | }; | |
9590837b | 261 | |
b5bc60b4 TH |
262 | /* Index numbers for special mount operations. */ |
263 | enum tomoyo_special_mount { | |
264 | TOMOYO_MOUNT_BIND, /* mount --bind /source /dest */ | |
265 | TOMOYO_MOUNT_MOVE, /* mount --move /old /new */ | |
266 | TOMOYO_MOUNT_REMOUNT, /* mount -o remount /dir */ | |
267 | TOMOYO_MOUNT_MAKE_UNBINDABLE, /* mount --make-unbindable /dir */ | |
268 | TOMOYO_MOUNT_MAKE_PRIVATE, /* mount --make-private /dir */ | |
269 | TOMOYO_MOUNT_MAKE_SLAVE, /* mount --make-slave /dir */ | |
270 | TOMOYO_MOUNT_MAKE_SHARED, /* mount --make-shared /dir */ | |
271 | TOMOYO_MAX_SPECIAL_MOUNT | |
272 | }; | |
273 | ||
274 | /* Index numbers for functionality. */ | |
57c2590f TH |
275 | enum tomoyo_mac_index { |
276 | TOMOYO_MAC_FILE_EXECUTE, | |
277 | TOMOYO_MAC_FILE_OPEN, | |
278 | TOMOYO_MAC_FILE_CREATE, | |
279 | TOMOYO_MAC_FILE_UNLINK, | |
7c75964f | 280 | TOMOYO_MAC_FILE_GETATTR, |
57c2590f TH |
281 | TOMOYO_MAC_FILE_MKDIR, |
282 | TOMOYO_MAC_FILE_RMDIR, | |
283 | TOMOYO_MAC_FILE_MKFIFO, | |
284 | TOMOYO_MAC_FILE_MKSOCK, | |
285 | TOMOYO_MAC_FILE_TRUNCATE, | |
286 | TOMOYO_MAC_FILE_SYMLINK, | |
57c2590f TH |
287 | TOMOYO_MAC_FILE_MKBLOCK, |
288 | TOMOYO_MAC_FILE_MKCHAR, | |
289 | TOMOYO_MAC_FILE_LINK, | |
290 | TOMOYO_MAC_FILE_RENAME, | |
291 | TOMOYO_MAC_FILE_CHMOD, | |
292 | TOMOYO_MAC_FILE_CHOWN, | |
293 | TOMOYO_MAC_FILE_CHGRP, | |
294 | TOMOYO_MAC_FILE_IOCTL, | |
295 | TOMOYO_MAC_FILE_CHROOT, | |
296 | TOMOYO_MAC_FILE_MOUNT, | |
297 | TOMOYO_MAC_FILE_UMOUNT, | |
298 | TOMOYO_MAC_FILE_PIVOT_ROOT, | |
299 | TOMOYO_MAX_MAC_INDEX | |
300 | }; | |
301 | ||
b5bc60b4 | 302 | /* Index numbers for category of functionality. */ |
57c2590f TH |
303 | enum tomoyo_mac_category_index { |
304 | TOMOYO_MAC_CATEGORY_FILE, | |
305 | TOMOYO_MAX_MAC_CATEGORY_INDEX | |
306 | }; | |
307 | ||
82e0f001 | 308 | /* |
b5bc60b4 TH |
309 | * Retry this request. Returned by tomoyo_supervisor() if policy violation has |
310 | * occurred in enforcing mode and the userspace daemon decided to retry. | |
82e0f001 | 311 | * |
b5bc60b4 TH |
312 | * We must choose a positive value in order to distinguish "granted" (which is |
313 | * 0) and "rejected" (which is a negative value) and "retry". | |
82e0f001 | 314 | */ |
b5bc60b4 TH |
315 | #define TOMOYO_RETRY_REQUEST 1 |
316 | ||
b22b8b9f TH |
317 | /* Index numbers for /sys/kernel/security/tomoyo/stat interface. */ |
318 | enum tomoyo_policy_stat_type { | |
319 | /* Do not change this order. */ | |
320 | TOMOYO_STAT_POLICY_UPDATES, | |
321 | TOMOYO_STAT_POLICY_LEARNING, /* == TOMOYO_CONFIG_LEARNING */ | |
322 | TOMOYO_STAT_POLICY_PERMISSIVE, /* == TOMOYO_CONFIG_PERMISSIVE */ | |
323 | TOMOYO_STAT_POLICY_ENFORCING, /* == TOMOYO_CONFIG_ENFORCING */ | |
324 | TOMOYO_MAX_POLICY_STAT | |
325 | }; | |
326 | ||
d5ca1725 TH |
327 | /* Index numbers for profile's PREFERENCE values. */ |
328 | enum tomoyo_pref_index { | |
eadd99cc | 329 | TOMOYO_PREF_MAX_AUDIT_LOG, |
d5ca1725 TH |
330 | TOMOYO_PREF_MAX_LEARNING_ENTRY, |
331 | TOMOYO_MAX_PREF | |
332 | }; | |
333 | ||
b5bc60b4 TH |
334 | /********** Structure definitions. **********/ |
335 | ||
336 | /* Common header for holding ACL entries. */ | |
82e0f001 TH |
337 | struct tomoyo_acl_head { |
338 | struct list_head list; | |
339 | bool is_deleted; | |
340 | } __packed; | |
341 | ||
0df7e8b8 TH |
342 | /* Common header for shared entries. */ |
343 | struct tomoyo_shared_acl_head { | |
344 | struct list_head list; | |
345 | atomic_t users; | |
346 | } __packed; | |
347 | ||
bd03a3e4 TH |
348 | struct tomoyo_policy_namespace; |
349 | ||
b5bc60b4 | 350 | /* Structure for request info. */ |
cb0abe6a | 351 | struct tomoyo_request_info { |
8761afd4 TH |
352 | /* |
353 | * For holding parameters specific to operations which deal files. | |
354 | * NULL if not dealing files. | |
355 | */ | |
356 | struct tomoyo_obj_info *obj; | |
2ca9bf45 TH |
357 | /* |
358 | * For holding parameters specific to execve() request. | |
359 | * NULL if not dealing do_execve(). | |
360 | */ | |
361 | struct tomoyo_execve *ee; | |
cb0abe6a | 362 | struct tomoyo_domain_info *domain; |
cf6e9a64 TH |
363 | /* For holding parameters. */ |
364 | union { | |
365 | struct { | |
366 | const struct tomoyo_path_info *filename; | |
484ca79c TH |
367 | /* For using wildcards at tomoyo_find_next_domain(). */ |
368 | const struct tomoyo_path_info *matched_path; | |
b5bc60b4 | 369 | /* One of values in "enum tomoyo_path_acl_index". */ |
cf6e9a64 TH |
370 | u8 operation; |
371 | } path; | |
372 | struct { | |
373 | const struct tomoyo_path_info *filename1; | |
374 | const struct tomoyo_path_info *filename2; | |
b5bc60b4 | 375 | /* One of values in "enum tomoyo_path2_acl_index". */ |
cf6e9a64 TH |
376 | u8 operation; |
377 | } path2; | |
378 | struct { | |
379 | const struct tomoyo_path_info *filename; | |
380 | unsigned int mode; | |
381 | unsigned int major; | |
382 | unsigned int minor; | |
b5bc60b4 | 383 | /* One of values in "enum tomoyo_mkdev_acl_index". */ |
cf6e9a64 TH |
384 | u8 operation; |
385 | } mkdev; | |
386 | struct { | |
387 | const struct tomoyo_path_info *filename; | |
388 | unsigned long number; | |
b5bc60b4 TH |
389 | /* |
390 | * One of values in | |
391 | * "enum tomoyo_path_number_acl_index". | |
392 | */ | |
cf6e9a64 TH |
393 | u8 operation; |
394 | } path_number; | |
395 | struct { | |
396 | const struct tomoyo_path_info *type; | |
397 | const struct tomoyo_path_info *dir; | |
398 | const struct tomoyo_path_info *dev; | |
399 | unsigned long flags; | |
400 | int need_dev; | |
401 | } mount; | |
402 | } param; | |
403 | u8 param_type; | |
404 | bool granted; | |
17fcfbd9 TH |
405 | u8 retry; |
406 | u8 profile; | |
cb0abe6a | 407 | u8 mode; /* One of tomoyo_mode_index . */ |
57c2590f | 408 | u8 type; |
cb0abe6a TH |
409 | }; |
410 | ||
b5bc60b4 | 411 | /* Structure for holding a token. */ |
9590837b KT |
412 | struct tomoyo_path_info { |
413 | const char *name; | |
414 | u32 hash; /* = full_name_hash(name, strlen(name)) */ | |
9590837b KT |
415 | u16 const_len; /* = tomoyo_const_part_length(name) */ |
416 | bool is_dir; /* = tomoyo_strendswith(name, "/") */ | |
417 | bool is_patterned; /* = tomoyo_path_contains_pattern(name) */ | |
9590837b KT |
418 | }; |
419 | ||
b5bc60b4 | 420 | /* Structure for holding string data. */ |
e2bf6907 | 421 | struct tomoyo_name { |
0df7e8b8 | 422 | struct tomoyo_shared_acl_head head; |
76bb0895 TH |
423 | struct tomoyo_path_info entry; |
424 | }; | |
9590837b | 425 | |
b5bc60b4 | 426 | /* Structure for holding a word. */ |
7762fbff | 427 | struct tomoyo_name_union { |
b5bc60b4 | 428 | /* Either @filename or @group is NULL. */ |
7762fbff | 429 | const struct tomoyo_path_info *filename; |
a98aa4de | 430 | struct tomoyo_group *group; |
7762fbff TH |
431 | }; |
432 | ||
b5bc60b4 | 433 | /* Structure for holding a number. */ |
4c3e9e2d TH |
434 | struct tomoyo_number_union { |
435 | unsigned long values[2]; | |
b5bc60b4 TH |
436 | struct tomoyo_group *group; /* Maybe NULL. */ |
437 | /* One of values in "enum tomoyo_value_type". */ | |
0df7e8b8 | 438 | u8 value_type[2]; |
4c3e9e2d TH |
439 | }; |
440 | ||
a98aa4de TH |
441 | /* Structure for "path_group"/"number_group" directive. */ |
442 | struct tomoyo_group { | |
0df7e8b8 | 443 | struct tomoyo_shared_acl_head head; |
4c3e9e2d TH |
444 | const struct tomoyo_path_info *group_name; |
445 | struct list_head member_list; | |
4c3e9e2d TH |
446 | }; |
447 | ||
7762fbff | 448 | /* Structure for "path_group" directive. */ |
a98aa4de | 449 | struct tomoyo_path_group { |
82e0f001 | 450 | struct tomoyo_acl_head head; |
7762fbff TH |
451 | const struct tomoyo_path_info *member_name; |
452 | }; | |
453 | ||
4c3e9e2d | 454 | /* Structure for "number_group" directive. */ |
a98aa4de | 455 | struct tomoyo_number_group { |
82e0f001 | 456 | struct tomoyo_acl_head head; |
4c3e9e2d TH |
457 | struct tomoyo_number_union number; |
458 | }; | |
459 | ||
8761afd4 TH |
460 | /* Subset of "struct stat". Used by conditional ACL and audit logs. */ |
461 | struct tomoyo_mini_stat { | |
462 | uid_t uid; | |
463 | gid_t gid; | |
464 | ino_t ino; | |
465 | mode_t mode; | |
466 | dev_t dev; | |
467 | dev_t rdev; | |
468 | }; | |
469 | ||
470 | /* Structure for attribute checks in addition to pathname checks. */ | |
471 | struct tomoyo_obj_info { | |
472 | /* | |
473 | * True if tomoyo_get_attributes() was already called, false otherwise. | |
474 | */ | |
475 | bool validate_done; | |
476 | /* True if @stat[] is valid. */ | |
477 | bool stat_valid[TOMOYO_MAX_PATH_STAT]; | |
478 | /* First pathname. Initialized with { NULL, NULL } if no path. */ | |
479 | struct path path1; | |
480 | /* Second pathname. Initialized with { NULL, NULL } if no path. */ | |
481 | struct path path2; | |
482 | /* | |
483 | * Information on @path1, @path1's parent directory, @path2, @path2's | |
484 | * parent directory. | |
485 | */ | |
486 | struct tomoyo_mini_stat stat[TOMOYO_MAX_PATH_STAT]; | |
2ca9bf45 TH |
487 | /* |
488 | * Content of symbolic link to be created. NULL for operations other | |
489 | * than symlink(). | |
490 | */ | |
491 | struct tomoyo_path_info *symlink_target; | |
492 | }; | |
493 | ||
494 | /* Structure for execve() operation. */ | |
495 | struct tomoyo_execve { | |
496 | struct tomoyo_request_info r; | |
497 | struct tomoyo_obj_info obj; | |
498 | struct linux_binprm *bprm; | |
499 | /* For temporary use. */ | |
500 | char *tmp; /* Size is TOMOYO_EXEC_TMPSIZE bytes */ | |
8761afd4 TH |
501 | }; |
502 | ||
2066a361 TH |
503 | /* Structure for entries which follows "struct tomoyo_condition". */ |
504 | struct tomoyo_condition_element { | |
505 | /* Left hand operand. */ | |
506 | u8 left; | |
507 | /* Right hand operand. */ | |
508 | u8 right; | |
509 | /* Equation operator. True if equals or overlaps, false otherwise. */ | |
510 | bool equals; | |
511 | }; | |
512 | ||
513 | /* Structure for optional arguments. */ | |
514 | struct tomoyo_condition { | |
515 | struct tomoyo_shared_acl_head head; | |
516 | u32 size; /* Memory size allocated for this entry. */ | |
517 | u16 condc; /* Number of conditions in this struct. */ | |
518 | u16 numbers_count; /* Number of "struct tomoyo_number_union values". */ | |
2ca9bf45 | 519 | u16 names_count; /* Number of "struct tomoyo_name_union names". */ |
2066a361 TH |
520 | /* |
521 | * struct tomoyo_condition_element condition[condc]; | |
522 | * struct tomoyo_number_union values[numbers_count]; | |
2ca9bf45 | 523 | * struct tomoyo_name_union names[names_count]; |
2066a361 TH |
524 | */ |
525 | }; | |
526 | ||
b5bc60b4 | 527 | /* Common header for individual entries. */ |
9590837b KT |
528 | struct tomoyo_acl_info { |
529 | struct list_head list; | |
2066a361 | 530 | struct tomoyo_condition *cond; /* Maybe NULL. */ |
237ab459 | 531 | bool is_deleted; |
b5bc60b4 | 532 | u8 type; /* One of values in "enum tomoyo_acl_entry_type_index". */ |
9590837b KT |
533 | } __packed; |
534 | ||
b5bc60b4 | 535 | /* Structure for domain information. */ |
9590837b KT |
536 | struct tomoyo_domain_info { |
537 | struct list_head list; | |
538 | struct list_head acl_info_list; | |
539 | /* Name of this domain. Never NULL. */ | |
540 | const struct tomoyo_path_info *domainname; | |
bd03a3e4 TH |
541 | /* Namespace for this domain. Never NULL. */ |
542 | struct tomoyo_policy_namespace *ns; | |
9590837b | 543 | u8 profile; /* Profile number to use. */ |
32997144 | 544 | u8 group; /* Group number to use. */ |
a0558fc3 | 545 | bool is_deleted; /* Delete flag. */ |
2c47ab93 | 546 | bool flags[TOMOYO_MAX_DOMAIN_INFO_FLAGS]; |
ec8e6a4e | 547 | atomic_t users; /* Number of referring credentials. */ |
9590837b KT |
548 | }; |
549 | ||
9590837b | 550 | /* |
b5bc60b4 TH |
551 | * Structure for "file execute", "file read", "file write", "file append", |
552 | * "file unlink", "file getattr", "file rmdir", "file truncate", | |
553 | * "file symlink", "file chroot" and "file unmount" directive. | |
9590837b | 554 | */ |
7ef61233 TH |
555 | struct tomoyo_path_acl { |
556 | struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH_ACL */ | |
b5bc60b4 | 557 | u16 perm; /* Bitmask of values in "enum tomoyo_path_acl_index". */ |
7762fbff | 558 | struct tomoyo_name_union name; |
9590837b KT |
559 | }; |
560 | ||
a1f9bb6a | 561 | /* |
b5bc60b4 TH |
562 | * Structure for "file create", "file mkdir", "file mkfifo", "file mksock", |
563 | * "file ioctl", "file chmod", "file chown" and "file chgrp" directive. | |
a1f9bb6a TH |
564 | */ |
565 | struct tomoyo_path_number_acl { | |
566 | struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH_NUMBER_ACL */ | |
b5bc60b4 | 567 | /* Bitmask of values in "enum tomoyo_path_number_acl_index". */ |
a1f9bb6a TH |
568 | u8 perm; |
569 | struct tomoyo_name_union name; | |
570 | struct tomoyo_number_union number; | |
571 | }; | |
572 | ||
b5bc60b4 | 573 | /* Structure for "file mkblock" and "file mkchar" directive. */ |
75093152 TH |
574 | struct tomoyo_mkdev_acl { |
575 | struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_MKDEV_ACL */ | |
b5bc60b4 | 576 | u8 perm; /* Bitmask of values in "enum tomoyo_mkdev_acl_index". */ |
a1f9bb6a TH |
577 | struct tomoyo_name_union name; |
578 | struct tomoyo_number_union mode; | |
579 | struct tomoyo_number_union major; | |
580 | struct tomoyo_number_union minor; | |
581 | }; | |
582 | ||
c3fa109a | 583 | /* |
b5bc60b4 | 584 | * Structure for "file rename", "file link" and "file pivot_root" directive. |
c3fa109a | 585 | */ |
7ef61233 TH |
586 | struct tomoyo_path2_acl { |
587 | struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH2_ACL */ | |
b5bc60b4 | 588 | u8 perm; /* Bitmask of values in "enum tomoyo_path2_acl_index". */ |
7762fbff TH |
589 | struct tomoyo_name_union name1; |
590 | struct tomoyo_name_union name2; | |
9590837b KT |
591 | }; |
592 | ||
b5bc60b4 | 593 | /* Structure for "file mount" directive. */ |
2106ccd9 TH |
594 | struct tomoyo_mount_acl { |
595 | struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_MOUNT_ACL */ | |
2106ccd9 TH |
596 | struct tomoyo_name_union dev_name; |
597 | struct tomoyo_name_union dir_name; | |
598 | struct tomoyo_name_union fs_type; | |
599 | struct tomoyo_number_union flags; | |
600 | }; | |
601 | ||
a238cf5b TH |
602 | /* Structure for holding a line from /sys/kernel/security/tomoyo/ interface. */ |
603 | struct tomoyo_acl_param { | |
604 | char *data; | |
605 | struct list_head *list; | |
bd03a3e4 | 606 | struct tomoyo_policy_namespace *ns; |
a238cf5b TH |
607 | bool is_delete; |
608 | }; | |
609 | ||
0d2171d7 | 610 | #define TOMOYO_MAX_IO_READ_QUEUE 64 |
f23571e8 | 611 | |
c3fa109a | 612 | /* |
f23571e8 TH |
613 | * Structure for reading/writing policy via /sys/kernel/security/tomoyo |
614 | * interfaces. | |
c3fa109a | 615 | */ |
9590837b | 616 | struct tomoyo_io_buffer { |
8fbe71f0 | 617 | void (*read) (struct tomoyo_io_buffer *); |
9590837b | 618 | int (*write) (struct tomoyo_io_buffer *); |
17fcfbd9 | 619 | int (*poll) (struct file *file, poll_table *wait); |
9590837b KT |
620 | /* Exclusive lock for this structure. */ |
621 | struct mutex io_sem; | |
f23571e8 | 622 | char __user *read_user_buf; |
2c47ab93 | 623 | size_t read_user_buf_avail; |
f23571e8 | 624 | struct { |
bd03a3e4 | 625 | struct list_head *ns; |
f23571e8 TH |
626 | struct list_head *domain; |
627 | struct list_head *group; | |
628 | struct list_head *acl; | |
2c47ab93 TH |
629 | size_t avail; |
630 | unsigned int step; | |
631 | unsigned int query_index; | |
f23571e8 | 632 | u16 index; |
2066a361 | 633 | u16 cond_index; |
32997144 | 634 | u8 acl_group_index; |
2066a361 | 635 | u8 cond_step; |
f23571e8 TH |
636 | u8 bit; |
637 | u8 w_pos; | |
638 | bool eof; | |
639 | bool print_this_domain_only; | |
bd03a3e4 | 640 | bool print_transition_related_only; |
2066a361 | 641 | bool print_cond_part; |
f23571e8 TH |
642 | const char *w[TOMOYO_MAX_IO_READ_QUEUE]; |
643 | } r; | |
0df7e8b8 | 644 | struct { |
bd03a3e4 | 645 | struct tomoyo_policy_namespace *ns; |
0df7e8b8 TH |
646 | /* The position currently writing to. */ |
647 | struct tomoyo_domain_info *domain; | |
648 | /* Bytes available for writing. */ | |
2c47ab93 | 649 | size_t avail; |
bd03a3e4 | 650 | bool is_delete; |
0df7e8b8 | 651 | } w; |
9590837b KT |
652 | /* Buffer for reading. */ |
653 | char *read_buf; | |
9590837b | 654 | /* Size of read buffer. */ |
2c47ab93 | 655 | size_t readbuf_size; |
9590837b KT |
656 | /* Buffer for writing. */ |
657 | char *write_buf; | |
9590837b | 658 | /* Size of write buffer. */ |
2c47ab93 | 659 | size_t writebuf_size; |
17fcfbd9 | 660 | /* Type of this interface. */ |
2c47ab93 | 661 | enum tomoyo_securityfs_interface_index type; |
2e503bbb TH |
662 | /* Users counter protected by tomoyo_io_buffer_list_lock. */ |
663 | u8 users; | |
664 | /* List for telling GC not to kfree() elements. */ | |
665 | struct list_head list; | |
9590837b KT |
666 | }; |
667 | ||
76bb0895 | 668 | /* |
b5bc60b4 TH |
669 | * Structure for "initialize_domain"/"no_initialize_domain"/"keep_domain"/ |
670 | * "no_keep_domain" keyword. | |
76bb0895 | 671 | */ |
5448ec4f | 672 | struct tomoyo_transition_control { |
82e0f001 | 673 | struct tomoyo_acl_head head; |
5448ec4f | 674 | u8 type; /* One of values in "enum tomoyo_transition_type". */ |
76bb0895 TH |
675 | /* True if the domainname is tomoyo_get_last_name(). */ |
676 | bool is_last_name; | |
5448ec4f TH |
677 | const struct tomoyo_path_info *domainname; /* Maybe NULL */ |
678 | const struct tomoyo_path_info *program; /* Maybe NULL */ | |
76bb0895 TH |
679 | }; |
680 | ||
b5bc60b4 | 681 | /* Structure for "aggregator" keyword. */ |
e2bf6907 | 682 | struct tomoyo_aggregator { |
82e0f001 | 683 | struct tomoyo_acl_head head; |
1084307c TH |
684 | const struct tomoyo_path_info *original_name; |
685 | const struct tomoyo_path_info *aggregated_name; | |
1084307c TH |
686 | }; |
687 | ||
b5bc60b4 | 688 | /* Structure for policy manager. */ |
e2bf6907 | 689 | struct tomoyo_manager { |
82e0f001 TH |
690 | struct tomoyo_acl_head head; |
691 | bool is_domain; /* True if manager is a domainname. */ | |
76bb0895 TH |
692 | /* A path to program or a domainname. */ |
693 | const struct tomoyo_path_info *manager; | |
76bb0895 TH |
694 | }; |
695 | ||
57c2590f TH |
696 | struct tomoyo_preference { |
697 | unsigned int learning_max_entry; | |
698 | bool enforcing_verbose; | |
699 | bool learning_verbose; | |
700 | bool permissive_verbose; | |
701 | }; | |
702 | ||
b5bc60b4 | 703 | /* Structure for /sys/kernel/security/tomnoyo/profile interface. */ |
57c2590f TH |
704 | struct tomoyo_profile { |
705 | const struct tomoyo_path_info *comment; | |
706 | struct tomoyo_preference *learning; | |
707 | struct tomoyo_preference *permissive; | |
708 | struct tomoyo_preference *enforcing; | |
709 | struct tomoyo_preference preference; | |
710 | u8 default_config; | |
711 | u8 config[TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX]; | |
d5ca1725 | 712 | unsigned int pref[TOMOYO_MAX_PREF]; |
57c2590f TH |
713 | }; |
714 | ||
eadd99cc TH |
715 | /* Structure for representing YYYY/MM/DD hh/mm/ss. */ |
716 | struct tomoyo_time { | |
717 | u16 year; | |
718 | u8 month; | |
719 | u8 day; | |
720 | u8 hour; | |
721 | u8 min; | |
722 | u8 sec; | |
723 | }; | |
724 | ||
bd03a3e4 TH |
725 | /* Structure for policy namespace. */ |
726 | struct tomoyo_policy_namespace { | |
727 | /* Profile table. Memory is allocated as needed. */ | |
728 | struct tomoyo_profile *profile_ptr[TOMOYO_MAX_PROFILES]; | |
729 | /* List of "struct tomoyo_group". */ | |
730 | struct list_head group_list[TOMOYO_MAX_GROUP]; | |
731 | /* List of policy. */ | |
732 | struct list_head policy_list[TOMOYO_MAX_POLICY]; | |
733 | /* The global ACL referred by "use_group" keyword. */ | |
734 | struct list_head acl_group[TOMOYO_MAX_ACL_GROUPS]; | |
735 | /* List for connecting to tomoyo_namespace_list list. */ | |
736 | struct list_head namespace_list; | |
737 | /* Profile version. Currently only 20100903 is defined. */ | |
738 | unsigned int profile_version; | |
739 | /* Name of this namespace (e.g. "<kernel>", "</usr/sbin/httpd>" ). */ | |
740 | const char *name; | |
741 | }; | |
742 | ||
76bb0895 TH |
743 | /********** Function prototypes. **********/ |
744 | ||
2106ccd9 TH |
745 | bool tomoyo_compare_number_union(const unsigned long value, |
746 | const struct tomoyo_number_union *ptr); | |
2066a361 TH |
747 | bool tomoyo_condition(struct tomoyo_request_info *r, |
748 | const struct tomoyo_condition *cond); | |
75093152 | 749 | bool tomoyo_correct_domain(const unsigned char *domainname); |
75093152 TH |
750 | bool tomoyo_correct_path(const char *filename); |
751 | bool tomoyo_correct_word(const char *string); | |
75093152 | 752 | bool tomoyo_domain_def(const unsigned char *buffer); |
3ddf17f0 TH |
753 | bool tomoyo_domain_quota_is_ok(struct tomoyo_request_info *r); |
754 | bool tomoyo_memory_ok(void *ptr); | |
4c3e9e2d TH |
755 | bool tomoyo_number_matches_group(const unsigned long min, |
756 | const unsigned long max, | |
a98aa4de | 757 | const struct tomoyo_group *group); |
3ddf17f0 TH |
758 | bool tomoyo_parse_name_union(struct tomoyo_acl_param *param, |
759 | struct tomoyo_name_union *ptr); | |
a238cf5b TH |
760 | bool tomoyo_parse_number_union(struct tomoyo_acl_param *param, |
761 | struct tomoyo_number_union *ptr); | |
3ddf17f0 TH |
762 | bool tomoyo_path_matches_pattern(const struct tomoyo_path_info *filename, |
763 | const struct tomoyo_path_info *pattern); | |
764 | bool tomoyo_permstr(const char *string, const char *keyword); | |
765 | bool tomoyo_str_starts(char **src, const char *find); | |
766 | char *tomoyo_encode(const char *str); | |
767 | char *tomoyo_init_log(struct tomoyo_request_info *r, int len, const char *fmt, | |
768 | va_list args); | |
769 | char *tomoyo_read_token(struct tomoyo_acl_param *param); | |
770 | char *tomoyo_realpath_from_path(struct path *path); | |
771 | char *tomoyo_realpath_nofollow(const char *pathname); | |
772 | const char *tomoyo_get_exe(void); | |
773 | const char *tomoyo_yesno(const unsigned int value); | |
774 | const struct tomoyo_path_info *tomoyo_compare_name_union | |
775 | (const struct tomoyo_path_info *name, const struct tomoyo_name_union *ptr); | |
776 | const struct tomoyo_path_info *tomoyo_get_name(const char *name); | |
777 | const struct tomoyo_path_info *tomoyo_path_matches_group | |
778 | (const struct tomoyo_path_info *pathname, const struct tomoyo_group *group); | |
779 | int tomoyo_check_open_permission(struct tomoyo_domain_info *domain, | |
780 | struct path *path, const int flag); | |
781 | int tomoyo_close_control(struct tomoyo_io_buffer *head); | |
782 | int tomoyo_find_next_domain(struct linux_binprm *bprm); | |
783 | int tomoyo_get_mode(const struct tomoyo_policy_namespace *ns, const u8 profile, | |
784 | const u8 index); | |
2106ccd9 | 785 | int tomoyo_init_request_info(struct tomoyo_request_info *r, |
57c2590f TH |
786 | struct tomoyo_domain_info *domain, |
787 | const u8 index); | |
3ddf17f0 TH |
788 | int tomoyo_mkdev_perm(const u8 operation, struct path *path, |
789 | const unsigned int mode, unsigned int dev); | |
b5bc60b4 TH |
790 | int tomoyo_mount_permission(char *dev_name, struct path *path, |
791 | const char *type, unsigned long flags, | |
792 | void *data_page); | |
3ddf17f0 TH |
793 | int tomoyo_open_control(const u8 type, struct file *file); |
794 | int tomoyo_path2_perm(const u8 operation, struct path *path1, | |
795 | struct path *path2); | |
796 | int tomoyo_path_number_perm(const u8 operation, struct path *path, | |
797 | unsigned long number); | |
798 | int tomoyo_path_perm(const u8 operation, struct path *path); | |
799 | int tomoyo_path_permission(struct tomoyo_request_info *r, u8 operation, | |
800 | const struct tomoyo_path_info *filename); | |
801 | int tomoyo_poll_control(struct file *file, poll_table *wait); | |
802 | int tomoyo_poll_log(struct file *file, poll_table *wait); | |
803 | int tomoyo_supervisor(struct tomoyo_request_info *r, const char *fmt, ...) | |
804 | __printf(2, 3); | |
805 | int tomoyo_update_domain(struct tomoyo_acl_info *new_entry, const int size, | |
806 | struct tomoyo_acl_param *param, | |
807 | bool (*check_duplicate) | |
808 | (const struct tomoyo_acl_info *, | |
809 | const struct tomoyo_acl_info *), | |
810 | bool (*merge_duplicate) | |
811 | (struct tomoyo_acl_info *, struct tomoyo_acl_info *, | |
812 | const bool)); | |
813 | int tomoyo_update_policy(struct tomoyo_acl_head *new_entry, const int size, | |
814 | struct tomoyo_acl_param *param, | |
815 | bool (*check_duplicate) | |
816 | (const struct tomoyo_acl_head *, | |
817 | const struct tomoyo_acl_head *)); | |
a238cf5b | 818 | int tomoyo_write_aggregator(struct tomoyo_acl_param *param); |
a238cf5b TH |
819 | int tomoyo_write_file(struct tomoyo_acl_param *param); |
820 | int tomoyo_write_group(struct tomoyo_acl_param *param, const u8 type); | |
3ddf17f0 TH |
821 | int tomoyo_write_transition_control(struct tomoyo_acl_param *param, |
822 | const u8 type); | |
823 | ssize_t tomoyo_read_control(struct tomoyo_io_buffer *head, char __user *buffer, | |
824 | const int buffer_len); | |
825 | ssize_t tomoyo_write_control(struct tomoyo_io_buffer *head, | |
826 | const char __user *buffer, const int buffer_len); | |
2066a361 | 827 | struct tomoyo_condition *tomoyo_get_condition(struct tomoyo_acl_param *param); |
e2bf6907 | 828 | struct tomoyo_domain_info *tomoyo_assign_domain(const char *domainname, |
bd03a3e4 | 829 | const bool transit); |
3ddf17f0 | 830 | struct tomoyo_domain_info *tomoyo_find_domain(const char *domainname); |
a238cf5b TH |
831 | struct tomoyo_group *tomoyo_get_group(struct tomoyo_acl_param *param, |
832 | const u8 idx); | |
3ddf17f0 TH |
833 | struct tomoyo_policy_namespace *tomoyo_assign_namespace |
834 | (const char *domainname); | |
835 | struct tomoyo_profile *tomoyo_profile(const struct tomoyo_policy_namespace *ns, | |
836 | const u8 profile); | |
9590837b KT |
837 | unsigned int tomoyo_check_flags(const struct tomoyo_domain_info *domain, |
838 | const u8 index); | |
2066a361 | 839 | u8 tomoyo_parse_ulong(unsigned long *result, char **str); |
9e4b50e9 | 840 | void *tomoyo_commit_ok(void *data, const unsigned int size); |
efe836ab | 841 | void __init tomoyo_load_builtin_policy(void); |
3ddf17f0 | 842 | void __init tomoyo_mm_init(void); |
99a85259 | 843 | void tomoyo_check_acl(struct tomoyo_request_info *r, |
484ca79c | 844 | bool (*check_entry) (struct tomoyo_request_info *, |
99a85259 | 845 | const struct tomoyo_acl_info *)); |
3ddf17f0 TH |
846 | void tomoyo_check_profile(void); |
847 | void tomoyo_convert_time(time_t time, struct tomoyo_time *stamp); | |
2066a361 | 848 | void tomoyo_del_condition(struct list_head *element); |
3ddf17f0 | 849 | void tomoyo_fill_path_info(struct tomoyo_path_info *ptr); |
8761afd4 | 850 | void tomoyo_get_attributes(struct tomoyo_obj_info *obj); |
3ddf17f0 TH |
851 | void tomoyo_init_policy_namespace(struct tomoyo_policy_namespace *ns); |
852 | void tomoyo_io_printf(struct tomoyo_io_buffer *head, const char *fmt, ...) | |
853 | __printf(2, 3); | |
854 | void tomoyo_load_policy(const char *filename); | |
855 | void tomoyo_memory_free(void *ptr); | |
856 | void tomoyo_normalize_line(unsigned char *buffer); | |
857 | void tomoyo_notify_gc(struct tomoyo_io_buffer *head, const bool is_register); | |
858 | void tomoyo_print_ulong(char *buffer, const int buffer_len, | |
859 | const unsigned long value, const u8 type); | |
860 | void tomoyo_put_name_union(struct tomoyo_name_union *ptr); | |
861 | void tomoyo_put_number_union(struct tomoyo_number_union *ptr); | |
862 | void tomoyo_read_log(struct tomoyo_io_buffer *head); | |
863 | void tomoyo_update_stat(const u8 index); | |
864 | void tomoyo_warn_oom(const char *function); | |
bd03a3e4 | 865 | void tomoyo_write_log(struct tomoyo_request_info *r, const char *fmt, ...) |
3ddf17f0 | 866 | __printf(2, 3); |
eadd99cc TH |
867 | void tomoyo_write_log2(struct tomoyo_request_info *r, int len, const char *fmt, |
868 | va_list args); | |
eadd99cc | 869 | |
76bb0895 TH |
870 | /********** External variable definitions. **********/ |
871 | ||
76bb0895 | 872 | extern bool tomoyo_policy_loaded; |
2066a361 TH |
873 | extern const char * const tomoyo_condition_keyword |
874 | [TOMOYO_MAX_CONDITION_KEYWORD]; | |
3ddf17f0 TH |
875 | extern const char * const tomoyo_dif[TOMOYO_MAX_DOMAIN_INFO_FLAGS]; |
876 | extern const char * const tomoyo_mac_keywords[TOMOYO_MAX_MAC_INDEX | |
877 | + TOMOYO_MAX_MAC_CATEGORY_INDEX]; | |
878 | extern const char * const tomoyo_mode[TOMOYO_CONFIG_MAX_MODE]; | |
2c47ab93 TH |
879 | extern const char * const tomoyo_path_keyword[TOMOYO_MAX_PATH_OPERATION]; |
880 | extern const u8 tomoyo_index2category[TOMOYO_MAX_MAC_INDEX]; | |
3ddf17f0 | 881 | extern const u8 tomoyo_pn2mac[TOMOYO_MAX_PATH_NUMBER_OPERATION]; |
0d2171d7 TH |
882 | extern const u8 tomoyo_pnnn2mac[TOMOYO_MAX_MKDEV_OPERATION]; |
883 | extern const u8 tomoyo_pp2mac[TOMOYO_MAX_PATH2_OPERATION]; | |
2066a361 | 884 | extern struct list_head tomoyo_condition_list; |
3ddf17f0 TH |
885 | extern struct list_head tomoyo_domain_list; |
886 | extern struct list_head tomoyo_name_list[TOMOYO_MAX_HASH]; | |
887 | extern struct list_head tomoyo_namespace_list; | |
888 | extern struct mutex tomoyo_policy_lock; | |
889 | extern struct srcu_struct tomoyo_ss; | |
890 | extern struct tomoyo_domain_info tomoyo_kernel_domain; | |
891 | extern struct tomoyo_policy_namespace tomoyo_kernel_namespace; | |
eadd99cc TH |
892 | extern unsigned int tomoyo_memory_quota[TOMOYO_MAX_MEMORY_STAT]; |
893 | extern unsigned int tomoyo_memory_used[TOMOYO_MAX_MEMORY_STAT]; | |
17fcfbd9 | 894 | |
76bb0895 TH |
895 | /********** Inlined functions. **********/ |
896 | ||
b5bc60b4 TH |
897 | /** |
898 | * tomoyo_read_lock - Take lock for protecting policy. | |
899 | * | |
900 | * Returns index number for tomoyo_read_unlock(). | |
901 | */ | |
76bb0895 TH |
902 | static inline int tomoyo_read_lock(void) |
903 | { | |
904 | return srcu_read_lock(&tomoyo_ss); | |
905 | } | |
906 | ||
b5bc60b4 TH |
907 | /** |
908 | * tomoyo_read_unlock - Release lock for protecting policy. | |
909 | * | |
910 | * @idx: Index number returned by tomoyo_read_lock(). | |
911 | * | |
912 | * Returns nothing. | |
913 | */ | |
76bb0895 TH |
914 | static inline void tomoyo_read_unlock(int idx) |
915 | { | |
916 | srcu_read_unlock(&tomoyo_ss, idx); | |
917 | } | |
918 | ||
2066a361 TH |
919 | /** |
920 | * tomoyo_sys_getppid - Copy of getppid(). | |
921 | * | |
922 | * Returns parent process's PID. | |
923 | * | |
924 | * Alpha does not have getppid() defined. To be able to build this module on | |
925 | * Alpha, I have to copy getppid() from kernel/timer.c. | |
926 | */ | |
927 | static inline pid_t tomoyo_sys_getppid(void) | |
928 | { | |
929 | pid_t pid; | |
930 | rcu_read_lock(); | |
931 | pid = task_tgid_vnr(current->real_parent); | |
932 | rcu_read_unlock(); | |
933 | return pid; | |
934 | } | |
935 | ||
936 | /** | |
937 | * tomoyo_sys_getpid - Copy of getpid(). | |
938 | * | |
939 | * Returns current thread's PID. | |
940 | * | |
941 | * Alpha does not have getpid() defined. To be able to build this module on | |
942 | * Alpha, I have to copy getpid() from kernel/timer.c. | |
943 | */ | |
944 | static inline pid_t tomoyo_sys_getpid(void) | |
945 | { | |
946 | return task_tgid_vnr(current); | |
947 | } | |
948 | ||
b5bc60b4 TH |
949 | /** |
950 | * tomoyo_pathcmp - strcmp() for "struct tomoyo_path_info" structure. | |
951 | * | |
952 | * @a: Pointer to "struct tomoyo_path_info". | |
953 | * @b: Pointer to "struct tomoyo_path_info". | |
954 | * | |
955 | * Returns true if @a == @b, false otherwise. | |
956 | */ | |
9590837b KT |
957 | static inline bool tomoyo_pathcmp(const struct tomoyo_path_info *a, |
958 | const struct tomoyo_path_info *b) | |
959 | { | |
960 | return a->hash != b->hash || strcmp(a->name, b->name); | |
961 | } | |
962 | ||
b5bc60b4 TH |
963 | /** |
964 | * tomoyo_put_name - Drop reference on "struct tomoyo_name". | |
965 | * | |
966 | * @name: Pointer to "struct tomoyo_path_info". Maybe NULL. | |
967 | * | |
968 | * Returns nothing. | |
969 | */ | |
76bb0895 TH |
970 | static inline void tomoyo_put_name(const struct tomoyo_path_info *name) |
971 | { | |
972 | if (name) { | |
e2bf6907 TH |
973 | struct tomoyo_name *ptr = |
974 | container_of(name, typeof(*ptr), entry); | |
0df7e8b8 | 975 | atomic_dec(&ptr->head.users); |
76bb0895 TH |
976 | } |
977 | } | |
9590837b | 978 | |
2066a361 TH |
979 | /** |
980 | * tomoyo_put_condition - Drop reference on "struct tomoyo_condition". | |
981 | * | |
982 | * @cond: Pointer to "struct tomoyo_condition". Maybe NULL. | |
983 | * | |
984 | * Returns nothing. | |
985 | */ | |
986 | static inline void tomoyo_put_condition(struct tomoyo_condition *cond) | |
987 | { | |
988 | if (cond) | |
989 | atomic_dec(&cond->head.users); | |
990 | } | |
991 | ||
b5bc60b4 TH |
992 | /** |
993 | * tomoyo_put_group - Drop reference on "struct tomoyo_group". | |
994 | * | |
995 | * @group: Pointer to "struct tomoyo_group". Maybe NULL. | |
996 | * | |
997 | * Returns nothing. | |
998 | */ | |
a98aa4de | 999 | static inline void tomoyo_put_group(struct tomoyo_group *group) |
4c3e9e2d TH |
1000 | { |
1001 | if (group) | |
0df7e8b8 | 1002 | atomic_dec(&group->head.users); |
4c3e9e2d TH |
1003 | } |
1004 | ||
b5bc60b4 TH |
1005 | /** |
1006 | * tomoyo_domain - Get "struct tomoyo_domain_info" for current thread. | |
1007 | * | |
1008 | * Returns pointer to "struct tomoyo_domain_info" for current thread. | |
1009 | */ | |
76bb0895 TH |
1010 | static inline struct tomoyo_domain_info *tomoyo_domain(void) |
1011 | { | |
1012 | return current_cred()->security; | |
1013 | } | |
9590837b | 1014 | |
b5bc60b4 TH |
1015 | /** |
1016 | * tomoyo_real_domain - Get "struct tomoyo_domain_info" for specified thread. | |
1017 | * | |
1018 | * @task: Pointer to "struct task_struct". | |
1019 | * | |
1020 | * Returns pointer to "struct tomoyo_security" for specified thread. | |
1021 | */ | |
76bb0895 TH |
1022 | static inline struct tomoyo_domain_info *tomoyo_real_domain(struct task_struct |
1023 | *task) | |
1024 | { | |
1025 | return task_cred_xxx(task, security); | |
1026 | } | |
9590837b | 1027 | |
b5bc60b4 TH |
1028 | /** |
1029 | * tomoyo_same_name_union - Check for duplicated "struct tomoyo_name_union" entry. | |
1030 | * | |
1031 | * @a: Pointer to "struct tomoyo_name_union". | |
1032 | * @b: Pointer to "struct tomoyo_name_union". | |
1033 | * | |
1034 | * Returns true if @a == @b, false otherwise. | |
1035 | */ | |
75093152 | 1036 | static inline bool tomoyo_same_name_union |
b5bc60b4 | 1037 | (const struct tomoyo_name_union *a, const struct tomoyo_name_union *b) |
7762fbff | 1038 | { |
0df7e8b8 | 1039 | return a->filename == b->filename && a->group == b->group; |
7762fbff TH |
1040 | } |
1041 | ||
b5bc60b4 TH |
1042 | /** |
1043 | * tomoyo_same_number_union - Check for duplicated "struct tomoyo_number_union" entry. | |
1044 | * | |
1045 | * @a: Pointer to "struct tomoyo_number_union". | |
1046 | * @b: Pointer to "struct tomoyo_number_union". | |
1047 | * | |
1048 | * Returns true if @a == @b, false otherwise. | |
1049 | */ | |
75093152 | 1050 | static inline bool tomoyo_same_number_union |
b5bc60b4 | 1051 | (const struct tomoyo_number_union *a, const struct tomoyo_number_union *b) |
4c3e9e2d | 1052 | { |
b5bc60b4 | 1053 | return a->values[0] == b->values[0] && a->values[1] == b->values[1] && |
0df7e8b8 TH |
1054 | a->group == b->group && a->value_type[0] == b->value_type[0] && |
1055 | a->value_type[1] == b->value_type[1]; | |
4c3e9e2d TH |
1056 | } |
1057 | ||
bd03a3e4 TH |
1058 | /** |
1059 | * tomoyo_current_namespace - Get "struct tomoyo_policy_namespace" for current thread. | |
1060 | * | |
1061 | * Returns pointer to "struct tomoyo_policy_namespace" for current thread. | |
1062 | */ | |
1063 | static inline struct tomoyo_policy_namespace *tomoyo_current_namespace(void) | |
1064 | { | |
1065 | return tomoyo_domain()->ns; | |
1066 | } | |
1067 | ||
eadd99cc TH |
1068 | #if defined(CONFIG_SLOB) |
1069 | ||
1070 | /** | |
1071 | * tomoyo_round2 - Round up to power of 2 for calculating memory usage. | |
1072 | * | |
1073 | * @size: Size to be rounded up. | |
1074 | * | |
1075 | * Returns @size. | |
1076 | * | |
1077 | * Since SLOB does not round up, this function simply returns @size. | |
1078 | */ | |
1079 | static inline int tomoyo_round2(size_t size) | |
1080 | { | |
1081 | return size; | |
1082 | } | |
1083 | ||
1084 | #else | |
1085 | ||
1086 | /** | |
1087 | * tomoyo_round2 - Round up to power of 2 for calculating memory usage. | |
1088 | * | |
1089 | * @size: Size to be rounded up. | |
1090 | * | |
1091 | * Returns rounded size. | |
1092 | * | |
1093 | * Strictly speaking, SLAB may be able to allocate (e.g.) 96 bytes instead of | |
1094 | * (e.g.) 128 bytes. | |
1095 | */ | |
1096 | static inline int tomoyo_round2(size_t size) | |
1097 | { | |
1098 | #if PAGE_SIZE == 4096 | |
1099 | size_t bsize = 32; | |
1100 | #else | |
1101 | size_t bsize = 64; | |
1102 | #endif | |
1103 | if (!size) | |
1104 | return 0; | |
1105 | while (size > bsize) | |
1106 | bsize <<= 1; | |
1107 | return bsize; | |
1108 | } | |
1109 | ||
1110 | #endif | |
1111 | ||
9590837b KT |
1112 | /** |
1113 | * list_for_each_cookie - iterate over a list with cookie. | |
1114 | * @pos: the &struct list_head to use as a loop cursor. | |
9590837b | 1115 | * @head: the head for your list. |
9590837b | 1116 | */ |
475e6fa3 TH |
1117 | #define list_for_each_cookie(pos, head) \ |
1118 | if (!pos) \ | |
1119 | pos = srcu_dereference((head)->next, &tomoyo_ss); \ | |
1120 | for ( ; pos != (head); pos = srcu_dereference(pos->next, &tomoyo_ss)) | |
fdb8ebb7 | 1121 | |
9590837b | 1122 | #endif /* !defined(_SECURITY_TOMOYO_COMMON_H) */ |