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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 | ||
76bb0895 | 49 | /* Keywords for ACLs. */ |
1084307c | 50 | #define TOMOYO_KEYWORD_AGGREGATOR "aggregator " |
76bb0895 | 51 | #define TOMOYO_KEYWORD_ALIAS "alias " |
2106ccd9 | 52 | #define TOMOYO_KEYWORD_ALLOW_MOUNT "allow_mount " |
76bb0895 TH |
53 | #define TOMOYO_KEYWORD_ALLOW_READ "allow_read " |
54 | #define TOMOYO_KEYWORD_DELETE "delete " | |
55 | #define TOMOYO_KEYWORD_DENY_REWRITE "deny_rewrite " | |
56 | #define TOMOYO_KEYWORD_FILE_PATTERN "file_pattern " | |
57 | #define TOMOYO_KEYWORD_INITIALIZE_DOMAIN "initialize_domain " | |
58 | #define TOMOYO_KEYWORD_KEEP_DOMAIN "keep_domain " | |
59 | #define TOMOYO_KEYWORD_NO_INITIALIZE_DOMAIN "no_initialize_domain " | |
60 | #define TOMOYO_KEYWORD_NO_KEEP_DOMAIN "no_keep_domain " | |
7762fbff | 61 | #define TOMOYO_KEYWORD_PATH_GROUP "path_group " |
4c3e9e2d | 62 | #define TOMOYO_KEYWORD_NUMBER_GROUP "number_group " |
76bb0895 TH |
63 | #define TOMOYO_KEYWORD_SELECT "select " |
64 | #define TOMOYO_KEYWORD_USE_PROFILE "use_profile " | |
65 | #define TOMOYO_KEYWORD_IGNORE_GLOBAL_ALLOW_READ "ignore_global_allow_read" | |
9b244373 TH |
66 | #define TOMOYO_KEYWORD_QUOTA_EXCEEDED "quota_exceeded" |
67 | #define TOMOYO_KEYWORD_TRANSITION_FAILED "transition_failed" | |
76bb0895 TH |
68 | /* A domain definition starts with <kernel>. */ |
69 | #define TOMOYO_ROOT_NAME "<kernel>" | |
70 | #define TOMOYO_ROOT_NAME_LEN (sizeof(TOMOYO_ROOT_NAME) - 1) | |
71 | ||
4c3e9e2d TH |
72 | /* Value type definition. */ |
73 | #define TOMOYO_VALUE_TYPE_INVALID 0 | |
74 | #define TOMOYO_VALUE_TYPE_DECIMAL 1 | |
75 | #define TOMOYO_VALUE_TYPE_OCTAL 2 | |
76 | #define TOMOYO_VALUE_TYPE_HEXADECIMAL 3 | |
77 | ||
76bb0895 | 78 | /* Index numbers for Access Controls. */ |
084da356 | 79 | enum tomoyo_acl_entry_type_index { |
7ef61233 TH |
80 | TOMOYO_TYPE_PATH_ACL, |
81 | TOMOYO_TYPE_PATH2_ACL, | |
a1f9bb6a TH |
82 | TOMOYO_TYPE_PATH_NUMBER_ACL, |
83 | TOMOYO_TYPE_PATH_NUMBER3_ACL, | |
2106ccd9 | 84 | TOMOYO_TYPE_MOUNT_ACL, |
084da356 | 85 | }; |
76bb0895 TH |
86 | |
87 | /* Index numbers for File Controls. */ | |
88 | ||
89 | /* | |
a1f9bb6a TH |
90 | * TOMOYO_TYPE_READ_WRITE is special. TOMOYO_TYPE_READ_WRITE is automatically |
91 | * set if both TOMOYO_TYPE_READ and TOMOYO_TYPE_WRITE are set. | |
92 | * Both TOMOYO_TYPE_READ and TOMOYO_TYPE_WRITE are automatically set if | |
93 | * TOMOYO_TYPE_READ_WRITE is set. | |
94 | * TOMOYO_TYPE_READ_WRITE is automatically cleared if either TOMOYO_TYPE_READ | |
95 | * or TOMOYO_TYPE_WRITE is cleared. | |
96 | * Both TOMOYO_TYPE_READ and TOMOYO_TYPE_WRITE are automatically cleared if | |
97 | * TOMOYO_TYPE_READ_WRITE is cleared. | |
76bb0895 TH |
98 | */ |
99 | ||
084da356 | 100 | enum tomoyo_path_acl_index { |
7ef61233 TH |
101 | TOMOYO_TYPE_READ_WRITE, |
102 | TOMOYO_TYPE_EXECUTE, | |
103 | TOMOYO_TYPE_READ, | |
104 | TOMOYO_TYPE_WRITE, | |
7ef61233 | 105 | TOMOYO_TYPE_UNLINK, |
7ef61233 | 106 | TOMOYO_TYPE_RMDIR, |
7ef61233 TH |
107 | TOMOYO_TYPE_TRUNCATE, |
108 | TOMOYO_TYPE_SYMLINK, | |
109 | TOMOYO_TYPE_REWRITE, | |
7ef61233 | 110 | TOMOYO_TYPE_CHROOT, |
7ef61233 TH |
111 | TOMOYO_TYPE_UMOUNT, |
112 | TOMOYO_MAX_PATH_OPERATION | |
084da356 TH |
113 | }; |
114 | ||
a1f9bb6a TH |
115 | enum tomoyo_path_number3_acl_index { |
116 | TOMOYO_TYPE_MKBLOCK, | |
117 | TOMOYO_TYPE_MKCHAR, | |
118 | TOMOYO_MAX_PATH_NUMBER3_OPERATION | |
119 | }; | |
120 | ||
084da356 | 121 | enum tomoyo_path2_acl_index { |
7ef61233 TH |
122 | TOMOYO_TYPE_LINK, |
123 | TOMOYO_TYPE_RENAME, | |
124 | TOMOYO_TYPE_PIVOT_ROOT, | |
125 | TOMOYO_MAX_PATH2_OPERATION | |
084da356 TH |
126 | }; |
127 | ||
a1f9bb6a TH |
128 | enum tomoyo_path_number_acl_index { |
129 | TOMOYO_TYPE_CREATE, | |
130 | TOMOYO_TYPE_MKDIR, | |
131 | TOMOYO_TYPE_MKFIFO, | |
132 | TOMOYO_TYPE_MKSOCK, | |
133 | TOMOYO_TYPE_IOCTL, | |
134 | TOMOYO_TYPE_CHMOD, | |
135 | TOMOYO_TYPE_CHOWN, | |
136 | TOMOYO_TYPE_CHGRP, | |
137 | TOMOYO_MAX_PATH_NUMBER_OPERATION | |
138 | }; | |
139 | ||
084da356 TH |
140 | enum tomoyo_securityfs_interface_index { |
141 | TOMOYO_DOMAINPOLICY, | |
142 | TOMOYO_EXCEPTIONPOLICY, | |
143 | TOMOYO_DOMAIN_STATUS, | |
144 | TOMOYO_PROCESS_STATUS, | |
145 | TOMOYO_MEMINFO, | |
146 | TOMOYO_SELFDOMAIN, | |
147 | TOMOYO_VERSION, | |
148 | TOMOYO_PROFILE, | |
17fcfbd9 | 149 | TOMOYO_QUERY, |
084da356 TH |
150 | TOMOYO_MANAGER |
151 | }; | |
9590837b | 152 | |
57c2590f TH |
153 | enum tomoyo_mac_index { |
154 | TOMOYO_MAC_FILE_EXECUTE, | |
155 | TOMOYO_MAC_FILE_OPEN, | |
156 | TOMOYO_MAC_FILE_CREATE, | |
157 | TOMOYO_MAC_FILE_UNLINK, | |
158 | TOMOYO_MAC_FILE_MKDIR, | |
159 | TOMOYO_MAC_FILE_RMDIR, | |
160 | TOMOYO_MAC_FILE_MKFIFO, | |
161 | TOMOYO_MAC_FILE_MKSOCK, | |
162 | TOMOYO_MAC_FILE_TRUNCATE, | |
163 | TOMOYO_MAC_FILE_SYMLINK, | |
164 | TOMOYO_MAC_FILE_REWRITE, | |
165 | TOMOYO_MAC_FILE_MKBLOCK, | |
166 | TOMOYO_MAC_FILE_MKCHAR, | |
167 | TOMOYO_MAC_FILE_LINK, | |
168 | TOMOYO_MAC_FILE_RENAME, | |
169 | TOMOYO_MAC_FILE_CHMOD, | |
170 | TOMOYO_MAC_FILE_CHOWN, | |
171 | TOMOYO_MAC_FILE_CHGRP, | |
172 | TOMOYO_MAC_FILE_IOCTL, | |
173 | TOMOYO_MAC_FILE_CHROOT, | |
174 | TOMOYO_MAC_FILE_MOUNT, | |
175 | TOMOYO_MAC_FILE_UMOUNT, | |
176 | TOMOYO_MAC_FILE_PIVOT_ROOT, | |
177 | TOMOYO_MAX_MAC_INDEX | |
178 | }; | |
179 | ||
180 | enum tomoyo_mac_category_index { | |
181 | TOMOYO_MAC_CATEGORY_FILE, | |
182 | TOMOYO_MAX_MAC_CATEGORY_INDEX | |
183 | }; | |
184 | ||
17fcfbd9 TH |
185 | #define TOMOYO_RETRY_REQUEST 1 /* Retry this request. */ |
186 | ||
76bb0895 | 187 | /********** Structure definitions. **********/ |
9590837b | 188 | |
cb0abe6a TH |
189 | /* |
190 | * tomoyo_request_info is a structure which is used for holding | |
191 | * | |
192 | * (1) Domain information of current process. | |
17fcfbd9 TH |
193 | * (2) How many retries are made for this request. |
194 | * (3) Profile number used for this request. | |
195 | * (4) Access control mode of the profile. | |
cb0abe6a TH |
196 | */ |
197 | struct tomoyo_request_info { | |
198 | struct tomoyo_domain_info *domain; | |
17fcfbd9 TH |
199 | u8 retry; |
200 | u8 profile; | |
cb0abe6a | 201 | u8 mode; /* One of tomoyo_mode_index . */ |
57c2590f | 202 | u8 type; |
cb0abe6a TH |
203 | }; |
204 | ||
c3fa109a TH |
205 | /* |
206 | * tomoyo_path_info is a structure which is used for holding a string data | |
207 | * used by TOMOYO. | |
208 | * This structure has several fields for supporting pattern matching. | |
209 | * | |
210 | * (1) "name" is the '\0' terminated string data. | |
211 | * (2) "hash" is full_name_hash(name, strlen(name)). | |
212 | * This allows tomoyo_pathcmp() to compare by hash before actually compare | |
213 | * using strcmp(). | |
214 | * (3) "const_len" is the length of the initial segment of "name" which | |
215 | * consists entirely of non wildcard characters. In other words, the length | |
216 | * which we can compare two strings using strncmp(). | |
217 | * (4) "is_dir" is a bool which is true if "name" ends with "/", | |
218 | * false otherwise. | |
219 | * TOMOYO distinguishes directory and non-directory. A directory ends with | |
220 | * "/" and non-directory does not end with "/". | |
221 | * (5) "is_patterned" is a bool which is true if "name" contains wildcard | |
222 | * characters, false otherwise. This allows TOMOYO to use "hash" and | |
223 | * strcmp() for string comparison if "is_patterned" is false. | |
c3fa109a | 224 | */ |
9590837b KT |
225 | struct tomoyo_path_info { |
226 | const char *name; | |
227 | u32 hash; /* = full_name_hash(name, strlen(name)) */ | |
9590837b KT |
228 | u16 const_len; /* = tomoyo_const_part_length(name) */ |
229 | bool is_dir; /* = tomoyo_strendswith(name, "/") */ | |
230 | bool is_patterned; /* = tomoyo_path_contains_pattern(name) */ | |
9590837b KT |
231 | }; |
232 | ||
233 | /* | |
76bb0895 TH |
234 | * tomoyo_name_entry is a structure which is used for linking |
235 | * "struct tomoyo_path_info" into tomoyo_name_list . | |
9590837b | 236 | */ |
76bb0895 TH |
237 | struct tomoyo_name_entry { |
238 | struct list_head list; | |
239 | atomic_t users; | |
240 | struct tomoyo_path_info entry; | |
241 | }; | |
9590837b | 242 | |
7762fbff TH |
243 | struct tomoyo_name_union { |
244 | const struct tomoyo_path_info *filename; | |
245 | struct tomoyo_path_group *group; | |
246 | u8 is_group; | |
247 | }; | |
248 | ||
4c3e9e2d TH |
249 | struct tomoyo_number_union { |
250 | unsigned long values[2]; | |
251 | struct tomoyo_number_group *group; | |
252 | u8 min_type; | |
253 | u8 max_type; | |
254 | u8 is_group; | |
255 | }; | |
256 | ||
7762fbff TH |
257 | /* Structure for "path_group" directive. */ |
258 | struct tomoyo_path_group { | |
259 | struct list_head list; | |
260 | const struct tomoyo_path_info *group_name; | |
261 | struct list_head member_list; | |
262 | atomic_t users; | |
263 | }; | |
264 | ||
4c3e9e2d TH |
265 | /* Structure for "number_group" directive. */ |
266 | struct tomoyo_number_group { | |
267 | struct list_head list; | |
268 | const struct tomoyo_path_info *group_name; | |
269 | struct list_head member_list; | |
270 | atomic_t users; | |
271 | }; | |
272 | ||
7762fbff TH |
273 | /* Structure for "path_group" directive. */ |
274 | struct tomoyo_path_group_member { | |
275 | struct list_head list; | |
276 | bool is_deleted; | |
277 | const struct tomoyo_path_info *member_name; | |
278 | }; | |
279 | ||
4c3e9e2d TH |
280 | /* Structure for "number_group" directive. */ |
281 | struct tomoyo_number_group_member { | |
282 | struct list_head list; | |
283 | bool is_deleted; | |
284 | struct tomoyo_number_union number; | |
285 | }; | |
286 | ||
9590837b | 287 | /* |
c3fa109a TH |
288 | * tomoyo_acl_info is a structure which is used for holding |
289 | * | |
290 | * (1) "list" which is linked to the ->acl_info_list of | |
291 | * "struct tomoyo_domain_info" | |
ea13ddba | 292 | * (2) "type" which tells type of the entry (either |
7ef61233 | 293 | * "struct tomoyo_path_acl" or "struct tomoyo_path2_acl"). |
9590837b KT |
294 | * |
295 | * Packing "struct tomoyo_acl_info" allows | |
7ef61233 TH |
296 | * "struct tomoyo_path_acl" to embed "u8" + "u16" and |
297 | * "struct tomoyo_path2_acl" to embed "u8" | |
9590837b KT |
298 | * without enlarging their structure size. |
299 | */ | |
300 | struct tomoyo_acl_info { | |
301 | struct list_head list; | |
9590837b KT |
302 | u8 type; |
303 | } __packed; | |
304 | ||
c3fa109a TH |
305 | /* |
306 | * tomoyo_domain_info is a structure which is used for holding permissions | |
307 | * (e.g. "allow_read /lib/libc-2.5.so") given to each domain. | |
308 | * It has following fields. | |
309 | * | |
310 | * (1) "list" which is linked to tomoyo_domain_list . | |
311 | * (2) "acl_info_list" which is linked to "struct tomoyo_acl_info". | |
312 | * (3) "domainname" which holds the name of the domain. | |
313 | * (4) "profile" which remembers profile number assigned to this domain. | |
314 | * (5) "is_deleted" is a bool which is true if this domain is marked as | |
315 | * "deleted", false otherwise. | |
316 | * (6) "quota_warned" is a bool which is used for suppressing warning message | |
317 | * when learning mode learned too much entries. | |
ea13ddba TH |
318 | * (7) "ignore_global_allow_read" is a bool which is true if this domain |
319 | * should ignore "allow_read" directive in exception policy. | |
320 | * (8) "transition_failed" is a bool which is set to true when this domain was | |
321 | * unable to create a new domain at tomoyo_find_next_domain() because the | |
322 | * name of the domain to be created was too long or it could not allocate | |
323 | * memory. If set to true, more than one process continued execve() | |
324 | * without domain transition. | |
ec8e6a4e TH |
325 | * (9) "users" is an atomic_t that holds how many "struct cred"->security |
326 | * are referring this "struct tomoyo_domain_info". If is_deleted == true | |
327 | * and users == 0, this struct will be kfree()d upon next garbage | |
328 | * collection. | |
c3fa109a TH |
329 | * |
330 | * A domain's lifecycle is an analogy of files on / directory. | |
331 | * Multiple domains with the same domainname cannot be created (as with | |
332 | * creating files with the same filename fails with -EEXIST). | |
333 | * If a process reached a domain, that process can reside in that domain after | |
334 | * that domain is marked as "deleted" (as with a process can access an already | |
335 | * open()ed file after that file was unlink()ed). | |
336 | */ | |
9590837b KT |
337 | struct tomoyo_domain_info { |
338 | struct list_head list; | |
339 | struct list_head acl_info_list; | |
340 | /* Name of this domain. Never NULL. */ | |
341 | const struct tomoyo_path_info *domainname; | |
342 | u8 profile; /* Profile number to use. */ | |
a0558fc3 | 343 | bool is_deleted; /* Delete flag. */ |
9590837b | 344 | bool quota_warned; /* Quota warnning flag. */ |
ea13ddba TH |
345 | bool ignore_global_allow_read; /* Ignore "allow_read" flag. */ |
346 | bool transition_failed; /* Domain transition failed flag. */ | |
ec8e6a4e | 347 | atomic_t users; /* Number of referring credentials. */ |
9590837b KT |
348 | }; |
349 | ||
9590837b | 350 | /* |
7ef61233 | 351 | * tomoyo_path_acl is a structure which is used for holding an |
c3fa109a TH |
352 | * entry with one pathname operation (e.g. open(), mkdir()). |
353 | * It has following fields. | |
354 | * | |
355 | * (1) "head" which is a "struct tomoyo_acl_info". | |
356 | * (2) "perm" which is a bitmask of permitted operations. | |
7762fbff | 357 | * (3) "name" is the pathname. |
c3fa109a TH |
358 | * |
359 | * Directives held by this structure are "allow_read/write", "allow_execute", | |
a1f9bb6a | 360 | * "allow_read", "allow_write", "allow_unlink", "allow_rmdir", |
2106ccd9 TH |
361 | * "allow_truncate", "allow_symlink", "allow_rewrite", "allow_chroot" and |
362 | * "allow_unmount". | |
9590837b | 363 | */ |
7ef61233 TH |
364 | struct tomoyo_path_acl { |
365 | struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH_ACL */ | |
9590837b | 366 | u16 perm; |
7762fbff | 367 | struct tomoyo_name_union name; |
9590837b KT |
368 | }; |
369 | ||
a1f9bb6a TH |
370 | /* |
371 | * tomoyo_path_number_acl is a structure which is used for holding an | |
372 | * entry with one pathname and one number operation. | |
373 | * It has following fields. | |
374 | * | |
375 | * (1) "head" which is a "struct tomoyo_acl_info". | |
376 | * (2) "perm" which is a bitmask of permitted operations. | |
377 | * (3) "name" is the pathname. | |
378 | * (4) "number" is the numeric value. | |
379 | * | |
380 | * Directives held by this structure are "allow_create", "allow_mkdir", | |
381 | * "allow_ioctl", "allow_mkfifo", "allow_mksock", "allow_chmod", "allow_chown" | |
382 | * and "allow_chgrp". | |
383 | * | |
384 | */ | |
385 | struct tomoyo_path_number_acl { | |
386 | struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH_NUMBER_ACL */ | |
387 | u8 perm; | |
388 | struct tomoyo_name_union name; | |
389 | struct tomoyo_number_union number; | |
390 | }; | |
391 | ||
392 | /* | |
393 | * tomoyo_path_number3_acl is a structure which is used for holding an | |
394 | * entry with one pathname and three numbers operation. | |
395 | * It has following fields. | |
396 | * | |
397 | * (1) "head" which is a "struct tomoyo_acl_info". | |
398 | * (2) "perm" which is a bitmask of permitted operations. | |
399 | * (3) "mode" is the create mode. | |
400 | * (4) "major" is the major number of device node. | |
401 | * (5) "minor" is the minor number of device node. | |
402 | * | |
403 | * Directives held by this structure are "allow_mkchar", "allow_mkblock". | |
404 | * | |
405 | */ | |
406 | struct tomoyo_path_number3_acl { | |
407 | struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH_NUMBER3_ACL */ | |
408 | u8 perm; | |
409 | struct tomoyo_name_union name; | |
410 | struct tomoyo_number_union mode; | |
411 | struct tomoyo_number_union major; | |
412 | struct tomoyo_number_union minor; | |
413 | }; | |
414 | ||
c3fa109a | 415 | /* |
7ef61233 | 416 | * tomoyo_path2_acl is a structure which is used for holding an |
937bf613 | 417 | * entry with two pathnames operation (i.e. link(), rename() and pivot_root()). |
c3fa109a TH |
418 | * It has following fields. |
419 | * | |
420 | * (1) "head" which is a "struct tomoyo_acl_info". | |
421 | * (2) "perm" which is a bitmask of permitted operations. | |
7762fbff TH |
422 | * (3) "name1" is the source/old pathname. |
423 | * (4) "name2" is the destination/new pathname. | |
c3fa109a | 424 | * |
937bf613 TH |
425 | * Directives held by this structure are "allow_rename", "allow_link" and |
426 | * "allow_pivot_root". | |
c3fa109a | 427 | */ |
7ef61233 TH |
428 | struct tomoyo_path2_acl { |
429 | struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH2_ACL */ | |
9590837b | 430 | u8 perm; |
7762fbff TH |
431 | struct tomoyo_name_union name1; |
432 | struct tomoyo_name_union name2; | |
9590837b KT |
433 | }; |
434 | ||
2106ccd9 TH |
435 | /* |
436 | * tomoyo_mount_acl is a structure which is used for holding an | |
437 | * entry for mount operation. | |
438 | * It has following fields. | |
439 | * | |
440 | * (1) "head" which is a "struct tomoyo_acl_info". | |
441 | * (2) "is_deleted" is boolean. | |
442 | * (3) "dev_name" is the device name. | |
443 | * (4) "dir_name" is the mount point. | |
444 | * (5) "flags" is the mount flags. | |
445 | * | |
446 | * Directives held by this structure are "allow_rename", "allow_link" and | |
447 | * "allow_pivot_root". | |
448 | */ | |
449 | struct tomoyo_mount_acl { | |
450 | struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_MOUNT_ACL */ | |
451 | bool is_deleted; | |
452 | struct tomoyo_name_union dev_name; | |
453 | struct tomoyo_name_union dir_name; | |
454 | struct tomoyo_name_union fs_type; | |
455 | struct tomoyo_number_union flags; | |
456 | }; | |
457 | ||
c3fa109a TH |
458 | /* |
459 | * tomoyo_io_buffer is a structure which is used for reading and modifying | |
460 | * configuration via /sys/kernel/security/tomoyo/ interface. | |
461 | * It has many fields. ->read_var1 , ->read_var2 , ->write_var1 are used as | |
462 | * cursors. | |
463 | * | |
464 | * Since the content of /sys/kernel/security/tomoyo/domain_policy is a list of | |
465 | * "struct tomoyo_domain_info" entries and each "struct tomoyo_domain_info" | |
466 | * entry has a list of "struct tomoyo_acl_info", we need two cursors when | |
467 | * reading (one is for traversing tomoyo_domain_list and the other is for | |
468 | * traversing "struct tomoyo_acl_info"->acl_info_list ). | |
469 | * | |
470 | * If a line written to /sys/kernel/security/tomoyo/domain_policy starts with | |
471 | * "select ", TOMOYO seeks the cursor ->read_var1 and ->write_var1 to the | |
472 | * domain with the domainname specified by the rest of that line (NULL is set | |
473 | * if seek failed). | |
474 | * If a line written to /sys/kernel/security/tomoyo/domain_policy starts with | |
475 | * "delete ", TOMOYO deletes an entry or a domain specified by the rest of that | |
476 | * line (->write_var1 is set to NULL if a domain was deleted). | |
477 | * If a line written to /sys/kernel/security/tomoyo/domain_policy starts with | |
478 | * neither "select " nor "delete ", an entry or a domain specified by that line | |
479 | * is appended. | |
480 | */ | |
9590837b KT |
481 | struct tomoyo_io_buffer { |
482 | int (*read) (struct tomoyo_io_buffer *); | |
483 | int (*write) (struct tomoyo_io_buffer *); | |
17fcfbd9 | 484 | int (*poll) (struct file *file, poll_table *wait); |
9590837b KT |
485 | /* Exclusive lock for this structure. */ |
486 | struct mutex io_sem; | |
fdb8ebb7 TH |
487 | /* Index returned by tomoyo_read_lock(). */ |
488 | int reader_idx; | |
9590837b KT |
489 | /* The position currently reading from. */ |
490 | struct list_head *read_var1; | |
491 | /* Extra variables for reading. */ | |
492 | struct list_head *read_var2; | |
493 | /* The position currently writing to. */ | |
494 | struct tomoyo_domain_info *write_var1; | |
495 | /* The step for reading. */ | |
496 | int read_step; | |
497 | /* Buffer for reading. */ | |
498 | char *read_buf; | |
499 | /* EOF flag for reading. */ | |
500 | bool read_eof; | |
501 | /* Read domain ACL of specified PID? */ | |
502 | bool read_single_domain; | |
503 | /* Extra variable for reading. */ | |
504 | u8 read_bit; | |
505 | /* Bytes available for reading. */ | |
506 | int read_avail; | |
507 | /* Size of read buffer. */ | |
508 | int readbuf_size; | |
509 | /* Buffer for writing. */ | |
510 | char *write_buf; | |
511 | /* Bytes available for writing. */ | |
512 | int write_avail; | |
513 | /* Size of write buffer. */ | |
514 | int writebuf_size; | |
17fcfbd9 TH |
515 | /* Type of this interface. */ |
516 | u8 type; | |
9590837b KT |
517 | }; |
518 | ||
76bb0895 TH |
519 | /* |
520 | * tomoyo_globally_readable_file_entry is a structure which is used for holding | |
521 | * "allow_read" entries. | |
522 | * It has following fields. | |
523 | * | |
524 | * (1) "list" which is linked to tomoyo_globally_readable_list . | |
525 | * (2) "filename" is a pathname which is allowed to open(O_RDONLY). | |
526 | * (3) "is_deleted" is a bool which is true if marked as deleted, false | |
527 | * otherwise. | |
528 | */ | |
529 | struct tomoyo_globally_readable_file_entry { | |
530 | struct list_head list; | |
531 | const struct tomoyo_path_info *filename; | |
532 | bool is_deleted; | |
533 | }; | |
534 | ||
535 | /* | |
536 | * tomoyo_pattern_entry is a structure which is used for holding | |
537 | * "tomoyo_pattern_list" entries. | |
538 | * It has following fields. | |
539 | * | |
540 | * (1) "list" which is linked to tomoyo_pattern_list . | |
541 | * (2) "pattern" is a pathname pattern which is used for converting pathnames | |
542 | * to pathname patterns during learning mode. | |
543 | * (3) "is_deleted" is a bool which is true if marked as deleted, false | |
544 | * otherwise. | |
545 | */ | |
546 | struct tomoyo_pattern_entry { | |
547 | struct list_head list; | |
548 | const struct tomoyo_path_info *pattern; | |
549 | bool is_deleted; | |
550 | }; | |
551 | ||
552 | /* | |
553 | * tomoyo_no_rewrite_entry is a structure which is used for holding | |
554 | * "deny_rewrite" entries. | |
555 | * It has following fields. | |
556 | * | |
557 | * (1) "list" which is linked to tomoyo_no_rewrite_list . | |
558 | * (2) "pattern" is a pathname which is by default not permitted to modify | |
559 | * already existing content. | |
560 | * (3) "is_deleted" is a bool which is true if marked as deleted, false | |
561 | * otherwise. | |
562 | */ | |
563 | struct tomoyo_no_rewrite_entry { | |
564 | struct list_head list; | |
565 | const struct tomoyo_path_info *pattern; | |
566 | bool is_deleted; | |
567 | }; | |
568 | ||
569 | /* | |
570 | * tomoyo_domain_initializer_entry is a structure which is used for holding | |
571 | * "initialize_domain" and "no_initialize_domain" entries. | |
572 | * It has following fields. | |
573 | * | |
574 | * (1) "list" which is linked to tomoyo_domain_initializer_list . | |
575 | * (2) "domainname" which is "a domainname" or "the last component of a | |
576 | * domainname". This field is NULL if "from" clause is not specified. | |
577 | * (3) "program" which is a program's pathname. | |
578 | * (4) "is_deleted" is a bool which is true if marked as deleted, false | |
579 | * otherwise. | |
580 | * (5) "is_not" is a bool which is true if "no_initialize_domain", false | |
581 | * otherwise. | |
582 | * (6) "is_last_name" is a bool which is true if "domainname" is "the last | |
583 | * component of a domainname", false otherwise. | |
584 | */ | |
585 | struct tomoyo_domain_initializer_entry { | |
586 | struct list_head list; | |
587 | const struct tomoyo_path_info *domainname; /* This may be NULL */ | |
588 | const struct tomoyo_path_info *program; | |
589 | bool is_deleted; | |
590 | bool is_not; /* True if this entry is "no_initialize_domain". */ | |
591 | /* True if the domainname is tomoyo_get_last_name(). */ | |
592 | bool is_last_name; | |
593 | }; | |
594 | ||
595 | /* | |
596 | * tomoyo_domain_keeper_entry is a structure which is used for holding | |
597 | * "keep_domain" and "no_keep_domain" entries. | |
598 | * It has following fields. | |
599 | * | |
600 | * (1) "list" which is linked to tomoyo_domain_keeper_list . | |
601 | * (2) "domainname" which is "a domainname" or "the last component of a | |
602 | * domainname". | |
603 | * (3) "program" which is a program's pathname. | |
604 | * This field is NULL if "from" clause is not specified. | |
605 | * (4) "is_deleted" is a bool which is true if marked as deleted, false | |
606 | * otherwise. | |
607 | * (5) "is_not" is a bool which is true if "no_initialize_domain", false | |
608 | * otherwise. | |
609 | * (6) "is_last_name" is a bool which is true if "domainname" is "the last | |
610 | * component of a domainname", false otherwise. | |
611 | */ | |
612 | struct tomoyo_domain_keeper_entry { | |
613 | struct list_head list; | |
614 | const struct tomoyo_path_info *domainname; | |
615 | const struct tomoyo_path_info *program; /* This may be NULL */ | |
616 | bool is_deleted; | |
617 | bool is_not; /* True if this entry is "no_keep_domain". */ | |
618 | /* True if the domainname is tomoyo_get_last_name(). */ | |
619 | bool is_last_name; | |
620 | }; | |
621 | ||
1084307c TH |
622 | /* |
623 | * tomoyo_aggregator_entry is a structure which is used for holding | |
624 | * "aggregator" entries. | |
625 | * It has following fields. | |
626 | * | |
627 | * (1) "list" which is linked to tomoyo_aggregator_list . | |
628 | * (2) "original_name" which is originally requested name. | |
629 | * (3) "aggregated_name" which is name to rewrite. | |
630 | * (4) "is_deleted" is a bool which is true if marked as deleted, false | |
631 | * otherwise. | |
632 | */ | |
633 | struct tomoyo_aggregator_entry { | |
634 | struct list_head list; | |
635 | const struct tomoyo_path_info *original_name; | |
636 | const struct tomoyo_path_info *aggregated_name; | |
637 | bool is_deleted; | |
638 | }; | |
639 | ||
76bb0895 TH |
640 | /* |
641 | * tomoyo_alias_entry is a structure which is used for holding "alias" entries. | |
642 | * It has following fields. | |
643 | * | |
644 | * (1) "list" which is linked to tomoyo_alias_list . | |
645 | * (2) "original_name" which is a dereferenced pathname. | |
646 | * (3) "aliased_name" which is a symlink's pathname. | |
647 | * (4) "is_deleted" is a bool which is true if marked as deleted, false | |
648 | * otherwise. | |
649 | */ | |
650 | struct tomoyo_alias_entry { | |
651 | struct list_head list; | |
652 | const struct tomoyo_path_info *original_name; | |
653 | const struct tomoyo_path_info *aliased_name; | |
654 | bool is_deleted; | |
655 | }; | |
656 | ||
657 | /* | |
658 | * tomoyo_policy_manager_entry is a structure which is used for holding list of | |
659 | * domainnames or programs which are permitted to modify configuration via | |
660 | * /sys/kernel/security/tomoyo/ interface. | |
661 | * It has following fields. | |
662 | * | |
663 | * (1) "list" which is linked to tomoyo_policy_manager_list . | |
664 | * (2) "manager" is a domainname or a program's pathname. | |
665 | * (3) "is_domain" is a bool which is true if "manager" is a domainname, false | |
666 | * otherwise. | |
667 | * (4) "is_deleted" is a bool which is true if marked as deleted, false | |
668 | * otherwise. | |
669 | */ | |
670 | struct tomoyo_policy_manager_entry { | |
671 | struct list_head list; | |
672 | /* A path to program or a domainname. */ | |
673 | const struct tomoyo_path_info *manager; | |
674 | bool is_domain; /* True if manager is a domainname. */ | |
675 | bool is_deleted; /* True if this entry is deleted. */ | |
676 | }; | |
677 | ||
57c2590f TH |
678 | struct tomoyo_preference { |
679 | unsigned int learning_max_entry; | |
680 | bool enforcing_verbose; | |
681 | bool learning_verbose; | |
682 | bool permissive_verbose; | |
683 | }; | |
684 | ||
685 | struct tomoyo_profile { | |
686 | const struct tomoyo_path_info *comment; | |
687 | struct tomoyo_preference *learning; | |
688 | struct tomoyo_preference *permissive; | |
689 | struct tomoyo_preference *enforcing; | |
690 | struct tomoyo_preference preference; | |
691 | u8 default_config; | |
692 | u8 config[TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX]; | |
693 | }; | |
694 | ||
76bb0895 TH |
695 | /********** Function prototypes. **********/ |
696 | ||
17fcfbd9 TH |
697 | extern asmlinkage long sys_getpid(void); |
698 | extern asmlinkage long sys_getppid(void); | |
699 | ||
c3ef1500 TH |
700 | /* Check whether the given string starts with the given keyword. */ |
701 | bool tomoyo_str_starts(char **src, const char *find); | |
702 | /* Get tomoyo_realpath() of current process. */ | |
703 | const char *tomoyo_get_exe(void); | |
704 | /* Format string. */ | |
705 | void tomoyo_normalize_line(unsigned char *buffer); | |
706 | /* Print warning or error message on console. */ | |
707 | void tomoyo_warn_log(struct tomoyo_request_info *r, const char *fmt, ...) | |
708 | __attribute__ ((format(printf, 2, 3))); | |
709 | /* Check all profiles currently assigned to domains are defined. */ | |
710 | void tomoyo_check_profile(void); | |
711 | /* Open operation for /sys/kernel/security/tomoyo/ interface. */ | |
712 | int tomoyo_open_control(const u8 type, struct file *file); | |
713 | /* Close /sys/kernel/security/tomoyo/ interface. */ | |
714 | int tomoyo_close_control(struct file *file); | |
715 | /* Read operation for /sys/kernel/security/tomoyo/ interface. */ | |
716 | int tomoyo_read_control(struct file *file, char __user *buffer, | |
717 | const int buffer_len); | |
718 | /* Write operation for /sys/kernel/security/tomoyo/ interface. */ | |
719 | int tomoyo_write_control(struct file *file, const char __user *buffer, | |
720 | const int buffer_len); | |
721 | /* Check whether the domain has too many ACL entries to hold. */ | |
722 | bool tomoyo_domain_quota_is_ok(struct tomoyo_request_info *r); | |
723 | /* Print out of memory warning message. */ | |
724 | void tomoyo_warn_oom(const char *function); | |
7762fbff TH |
725 | /* Check whether the given name matches the given name_union. */ |
726 | bool tomoyo_compare_name_union(const struct tomoyo_path_info *name, | |
727 | const struct tomoyo_name_union *ptr); | |
2106ccd9 TH |
728 | /* Check whether the given number matches the given number_union. */ |
729 | bool tomoyo_compare_number_union(const unsigned long value, | |
730 | const struct tomoyo_number_union *ptr); | |
57c2590f | 731 | int tomoyo_get_mode(const u8 profile, const u8 index); |
9590837b KT |
732 | /* Transactional sprintf() for policy dump. */ |
733 | bool tomoyo_io_printf(struct tomoyo_io_buffer *head, const char *fmt, ...) | |
734 | __attribute__ ((format(printf, 2, 3))); | |
735 | /* Check whether the domainname is correct. */ | |
17080008 | 736 | bool tomoyo_is_correct_domain(const unsigned char *domainname); |
9590837b | 737 | /* Check whether the token is correct. */ |
3f629636 TH |
738 | bool tomoyo_is_correct_path(const char *filename); |
739 | bool tomoyo_is_correct_word(const char *string); | |
9590837b KT |
740 | /* Check whether the token can be a domainname. */ |
741 | bool tomoyo_is_domain_def(const unsigned char *buffer); | |
7762fbff TH |
742 | bool tomoyo_parse_name_union(const char *filename, |
743 | struct tomoyo_name_union *ptr); | |
744 | /* Check whether the given filename matches the given path_group. */ | |
745 | bool tomoyo_path_matches_group(const struct tomoyo_path_info *pathname, | |
3f629636 | 746 | const struct tomoyo_path_group *group); |
4c3e9e2d TH |
747 | /* Check whether the given value matches the given number_group. */ |
748 | bool tomoyo_number_matches_group(const unsigned long min, | |
749 | const unsigned long max, | |
750 | const struct tomoyo_number_group *group); | |
9590837b KT |
751 | /* Check whether the given filename matches the given pattern. */ |
752 | bool tomoyo_path_matches_pattern(const struct tomoyo_path_info *filename, | |
753 | const struct tomoyo_path_info *pattern); | |
4c3e9e2d TH |
754 | |
755 | bool tomoyo_print_number_union(struct tomoyo_io_buffer *head, | |
756 | const struct tomoyo_number_union *ptr); | |
757 | bool tomoyo_parse_number_union(char *data, struct tomoyo_number_union *num); | |
758 | ||
1084307c TH |
759 | /* Read "aggregator" entry in exception policy. */ |
760 | bool tomoyo_read_aggregator_policy(struct tomoyo_io_buffer *head); | |
9590837b KT |
761 | /* Read "alias" entry in exception policy. */ |
762 | bool tomoyo_read_alias_policy(struct tomoyo_io_buffer *head); | |
763 | /* | |
764 | * Read "initialize_domain" and "no_initialize_domain" entry | |
765 | * in exception policy. | |
766 | */ | |
767 | bool tomoyo_read_domain_initializer_policy(struct tomoyo_io_buffer *head); | |
768 | /* Read "keep_domain" and "no_keep_domain" entry in exception policy. */ | |
769 | bool tomoyo_read_domain_keeper_policy(struct tomoyo_io_buffer *head); | |
770 | /* Read "file_pattern" entry in exception policy. */ | |
771 | bool tomoyo_read_file_pattern(struct tomoyo_io_buffer *head); | |
7762fbff TH |
772 | /* Read "path_group" entry in exception policy. */ |
773 | bool tomoyo_read_path_group_policy(struct tomoyo_io_buffer *head); | |
4c3e9e2d TH |
774 | /* Read "number_group" entry in exception policy. */ |
775 | bool tomoyo_read_number_group_policy(struct tomoyo_io_buffer *head); | |
9590837b KT |
776 | /* Read "allow_read" entry in exception policy. */ |
777 | bool tomoyo_read_globally_readable_policy(struct tomoyo_io_buffer *head); | |
778 | /* Read "deny_rewrite" entry in exception policy. */ | |
779 | bool tomoyo_read_no_rewrite_policy(struct tomoyo_io_buffer *head); | |
7762fbff TH |
780 | /* Tokenize a line. */ |
781 | bool tomoyo_tokenize(char *buffer, char *w[], size_t size); | |
9590837b KT |
782 | /* Write domain policy violation warning message to console? */ |
783 | bool tomoyo_verbose_mode(const struct tomoyo_domain_info *domain); | |
784 | /* Convert double path operation to operation name. */ | |
7ef61233 | 785 | const char *tomoyo_path22keyword(const u8 operation); |
a1f9bb6a TH |
786 | const char *tomoyo_path_number2keyword(const u8 operation); |
787 | const char *tomoyo_path_number32keyword(const u8 operation); | |
9590837b KT |
788 | /* Get the last component of the given domainname. */ |
789 | const char *tomoyo_get_last_name(const struct tomoyo_domain_info *domain); | |
9590837b | 790 | /* Convert single path operation to operation name. */ |
7ef61233 | 791 | const char *tomoyo_path2keyword(const u8 operation); |
2106ccd9 TH |
792 | /* Fill "struct tomoyo_request_info". */ |
793 | int tomoyo_init_request_info(struct tomoyo_request_info *r, | |
57c2590f TH |
794 | struct tomoyo_domain_info *domain, |
795 | const u8 index); | |
2106ccd9 TH |
796 | /* Check permission for mount operation. */ |
797 | int tomoyo_mount_permission(char *dev_name, struct path *path, char *type, | |
798 | unsigned long flags, void *data_page); | |
1084307c TH |
799 | /* Create "aggregator" entry in exception policy. */ |
800 | int tomoyo_write_aggregator_policy(char *data, const bool is_delete); | |
9590837b KT |
801 | /* Create "alias" entry in exception policy. */ |
802 | int tomoyo_write_alias_policy(char *data, const bool is_delete); | |
803 | /* | |
804 | * Create "initialize_domain" and "no_initialize_domain" entry | |
805 | * in exception policy. | |
806 | */ | |
807 | int tomoyo_write_domain_initializer_policy(char *data, const bool is_not, | |
808 | const bool is_delete); | |
809 | /* Create "keep_domain" and "no_keep_domain" entry in exception policy. */ | |
810 | int tomoyo_write_domain_keeper_policy(char *data, const bool is_not, | |
811 | const bool is_delete); | |
812 | /* | |
813 | * Create "allow_read/write", "allow_execute", "allow_read", "allow_write", | |
814 | * "allow_create", "allow_unlink", "allow_mkdir", "allow_rmdir", | |
815 | * "allow_mkfifo", "allow_mksock", "allow_mkblock", "allow_mkchar", | |
816 | * "allow_truncate", "allow_symlink", "allow_rewrite", "allow_rename" and | |
817 | * "allow_link" entry in domain policy. | |
818 | */ | |
819 | int tomoyo_write_file_policy(char *data, struct tomoyo_domain_info *domain, | |
820 | const bool is_delete); | |
821 | /* Create "allow_read" entry in exception policy. */ | |
822 | int tomoyo_write_globally_readable_policy(char *data, const bool is_delete); | |
2106ccd9 TH |
823 | /* Create "allow_mount" entry in domain policy. */ |
824 | int tomoyo_write_mount_policy(char *data, struct tomoyo_domain_info *domain, | |
825 | const bool is_delete); | |
9590837b KT |
826 | /* Create "deny_rewrite" entry in exception policy. */ |
827 | int tomoyo_write_no_rewrite_policy(char *data, const bool is_delete); | |
828 | /* Create "file_pattern" entry in exception policy. */ | |
829 | int tomoyo_write_pattern_policy(char *data, const bool is_delete); | |
7762fbff TH |
830 | /* Create "path_group" entry in exception policy. */ |
831 | int tomoyo_write_path_group_policy(char *data, const bool is_delete); | |
17fcfbd9 TH |
832 | int tomoyo_supervisor(struct tomoyo_request_info *r, const char *fmt, ...) |
833 | __attribute__ ((format(printf, 2, 3))); | |
4c3e9e2d TH |
834 | /* Create "number_group" entry in exception policy. */ |
835 | int tomoyo_write_number_group_policy(char *data, const bool is_delete); | |
9590837b KT |
836 | /* Find a domain by the given name. */ |
837 | struct tomoyo_domain_info *tomoyo_find_domain(const char *domainname); | |
838 | /* Find or create a domain by the given name. */ | |
839 | struct tomoyo_domain_info *tomoyo_find_or_assign_new_domain(const char * | |
840 | domainname, | |
841 | const u8 profile); | |
57c2590f | 842 | struct tomoyo_profile *tomoyo_profile(const u8 profile); |
7762fbff TH |
843 | /* Allocate memory for "struct tomoyo_path_group". */ |
844 | struct tomoyo_path_group *tomoyo_get_path_group(const char *group_name); | |
4c3e9e2d | 845 | struct tomoyo_number_group *tomoyo_get_number_group(const char *group_name); |
7762fbff | 846 | |
9590837b KT |
847 | /* Check mode for specified functionality. */ |
848 | unsigned int tomoyo_check_flags(const struct tomoyo_domain_info *domain, | |
849 | const u8 index); | |
9590837b KT |
850 | /* Fill in "struct tomoyo_path_info" members. */ |
851 | void tomoyo_fill_path_info(struct tomoyo_path_info *ptr); | |
852 | /* Run policy loader when /sbin/init starts. */ | |
853 | void tomoyo_load_policy(const char *filename); | |
9590837b | 854 | |
4c3e9e2d TH |
855 | void tomoyo_put_number_union(struct tomoyo_number_union *ptr); |
856 | ||
76bb0895 | 857 | /* Convert binary string to ascii string. */ |
c8c57e84 | 858 | char *tomoyo_encode(const char *str); |
76bb0895 TH |
859 | |
860 | /* | |
861 | * Returns realpath(3) of the given pathname but ignores chroot'ed root. | |
862 | * These functions use kzalloc(), so the caller must call kfree() | |
863 | * if these functions didn't return NULL. | |
864 | */ | |
865 | char *tomoyo_realpath(const char *pathname); | |
866 | /* | |
867 | * Same with tomoyo_realpath() except that it doesn't follow the final symlink. | |
868 | */ | |
869 | char *tomoyo_realpath_nofollow(const char *pathname); | |
870 | /* Same with tomoyo_realpath() except that the pathname is already solved. */ | |
871 | char *tomoyo_realpath_from_path(struct path *path); | |
17fcfbd9 TH |
872 | /* Get patterned pathname. */ |
873 | const char *tomoyo_file_pattern(const struct tomoyo_path_info *filename); | |
76bb0895 TH |
874 | |
875 | /* Check memory quota. */ | |
876 | bool tomoyo_memory_ok(void *ptr); | |
9e4b50e9 | 877 | void *tomoyo_commit_ok(void *data, const unsigned int size); |
76bb0895 TH |
878 | |
879 | /* | |
880 | * Keep the given name on the RAM. | |
881 | * The RAM is shared, so NEVER try to modify or kfree() the returned name. | |
882 | */ | |
883 | const struct tomoyo_path_info *tomoyo_get_name(const char *name); | |
884 | ||
885 | /* Check for memory usage. */ | |
886 | int tomoyo_read_memory_counter(struct tomoyo_io_buffer *head); | |
887 | ||
888 | /* Set memory quota. */ | |
889 | int tomoyo_write_memory_quota(struct tomoyo_io_buffer *head); | |
890 | ||
c3ef1500 TH |
891 | /* Initialize mm related code. */ |
892 | void __init tomoyo_mm_init(void); | |
57c2590f | 893 | int tomoyo_check_exec_perm(struct tomoyo_request_info *r, |
76bb0895 TH |
894 | const struct tomoyo_path_info *filename); |
895 | int tomoyo_check_open_permission(struct tomoyo_domain_info *domain, | |
896 | struct path *path, const int flag); | |
a1f9bb6a TH |
897 | int tomoyo_path_number_perm(const u8 operation, struct path *path, |
898 | unsigned long number); | |
899 | int tomoyo_path_number3_perm(const u8 operation, struct path *path, | |
900 | const unsigned int mode, unsigned int dev); | |
97d6931e TH |
901 | int tomoyo_path_perm(const u8 operation, struct path *path); |
902 | int tomoyo_path2_perm(const u8 operation, struct path *path1, | |
903 | struct path *path2); | |
76bb0895 TH |
904 | int tomoyo_find_next_domain(struct linux_binprm *bprm); |
905 | ||
a1f9bb6a TH |
906 | void tomoyo_print_ulong(char *buffer, const int buffer_len, |
907 | const unsigned long value, const u8 type); | |
908 | ||
7762fbff TH |
909 | /* Drop refcount on tomoyo_name_union. */ |
910 | void tomoyo_put_name_union(struct tomoyo_name_union *ptr); | |
911 | ||
847b173e TH |
912 | /* Run garbage collector. */ |
913 | void tomoyo_run_gc(void); | |
914 | ||
915 | void tomoyo_memory_free(void *ptr); | |
916 | ||
76bb0895 TH |
917 | /********** External variable definitions. **********/ |
918 | ||
919 | /* Lock for GC. */ | |
920 | extern struct srcu_struct tomoyo_ss; | |
921 | ||
922 | /* The list for "struct tomoyo_domain_info". */ | |
923 | extern struct list_head tomoyo_domain_list; | |
924 | ||
7762fbff | 925 | extern struct list_head tomoyo_path_group_list; |
4c3e9e2d | 926 | extern struct list_head tomoyo_number_group_list; |
847b173e TH |
927 | extern struct list_head tomoyo_domain_initializer_list; |
928 | extern struct list_head tomoyo_domain_keeper_list; | |
1084307c | 929 | extern struct list_head tomoyo_aggregator_list; |
847b173e TH |
930 | extern struct list_head tomoyo_alias_list; |
931 | extern struct list_head tomoyo_globally_readable_list; | |
932 | extern struct list_head tomoyo_pattern_list; | |
933 | extern struct list_head tomoyo_no_rewrite_list; | |
934 | extern struct list_head tomoyo_policy_manager_list; | |
935 | extern struct list_head tomoyo_name_list[TOMOYO_MAX_HASH]; | |
847b173e | 936 | |
76bb0895 TH |
937 | /* Lock for protecting policy. */ |
938 | extern struct mutex tomoyo_policy_lock; | |
939 | ||
940 | /* Has /sbin/init started? */ | |
941 | extern bool tomoyo_policy_loaded; | |
942 | ||
943 | /* The kernel's domain. */ | |
944 | extern struct tomoyo_domain_info tomoyo_kernel_domain; | |
945 | ||
17fcfbd9 TH |
946 | extern unsigned int tomoyo_quota_for_query; |
947 | extern unsigned int tomoyo_query_memory_size; | |
948 | ||
76bb0895 TH |
949 | /********** Inlined functions. **********/ |
950 | ||
951 | static inline int tomoyo_read_lock(void) | |
952 | { | |
953 | return srcu_read_lock(&tomoyo_ss); | |
954 | } | |
955 | ||
956 | static inline void tomoyo_read_unlock(int idx) | |
957 | { | |
958 | srcu_read_unlock(&tomoyo_ss, idx); | |
959 | } | |
960 | ||
9590837b KT |
961 | /* strcmp() for "struct tomoyo_path_info" structure. */ |
962 | static inline bool tomoyo_pathcmp(const struct tomoyo_path_info *a, | |
963 | const struct tomoyo_path_info *b) | |
964 | { | |
965 | return a->hash != b->hash || strcmp(a->name, b->name); | |
966 | } | |
967 | ||
9590837b KT |
968 | /** |
969 | * tomoyo_is_valid - Check whether the character is a valid char. | |
970 | * | |
971 | * @c: The character to check. | |
972 | * | |
973 | * Returns true if @c is a valid character, false otherwise. | |
974 | */ | |
975 | static inline bool tomoyo_is_valid(const unsigned char c) | |
976 | { | |
977 | return c > ' ' && c < 127; | |
978 | } | |
979 | ||
980 | /** | |
981 | * tomoyo_is_invalid - Check whether the character is an invalid char. | |
982 | * | |
983 | * @c: The character to check. | |
984 | * | |
985 | * Returns true if @c is an invalid character, false otherwise. | |
986 | */ | |
987 | static inline bool tomoyo_is_invalid(const unsigned char c) | |
988 | { | |
989 | return c && (c <= ' ' || c >= 127); | |
990 | } | |
991 | ||
76bb0895 TH |
992 | static inline void tomoyo_put_name(const struct tomoyo_path_info *name) |
993 | { | |
994 | if (name) { | |
995 | struct tomoyo_name_entry *ptr = | |
996 | container_of(name, struct tomoyo_name_entry, entry); | |
997 | atomic_dec(&ptr->users); | |
998 | } | |
999 | } | |
9590837b | 1000 | |
7762fbff TH |
1001 | static inline void tomoyo_put_path_group(struct tomoyo_path_group *group) |
1002 | { | |
1003 | if (group) | |
1004 | atomic_dec(&group->users); | |
1005 | } | |
1006 | ||
4c3e9e2d TH |
1007 | static inline void tomoyo_put_number_group(struct tomoyo_number_group *group) |
1008 | { | |
1009 | if (group) | |
1010 | atomic_dec(&group->users); | |
1011 | } | |
1012 | ||
76bb0895 TH |
1013 | static inline struct tomoyo_domain_info *tomoyo_domain(void) |
1014 | { | |
1015 | return current_cred()->security; | |
1016 | } | |
9590837b | 1017 | |
76bb0895 TH |
1018 | static inline struct tomoyo_domain_info *tomoyo_real_domain(struct task_struct |
1019 | *task) | |
1020 | { | |
1021 | return task_cred_xxx(task, security); | |
1022 | } | |
9590837b | 1023 | |
7762fbff TH |
1024 | static inline bool tomoyo_is_same_acl_head(const struct tomoyo_acl_info *p1, |
1025 | const struct tomoyo_acl_info *p2) | |
1026 | { | |
1027 | return p1->type == p2->type; | |
1028 | } | |
1029 | ||
1030 | static inline bool tomoyo_is_same_name_union | |
1031 | (const struct tomoyo_name_union *p1, const struct tomoyo_name_union *p2) | |
1032 | { | |
1033 | return p1->filename == p2->filename && p1->group == p2->group && | |
1034 | p1->is_group == p2->is_group; | |
1035 | } | |
1036 | ||
4c3e9e2d TH |
1037 | static inline bool tomoyo_is_same_number_union |
1038 | (const struct tomoyo_number_union *p1, const struct tomoyo_number_union *p2) | |
1039 | { | |
1040 | return p1->values[0] == p2->values[0] && p1->values[1] == p2->values[1] | |
1041 | && p1->group == p2->group && p1->min_type == p2->min_type && | |
1042 | p1->max_type == p2->max_type && p1->is_group == p2->is_group; | |
1043 | } | |
1044 | ||
7762fbff TH |
1045 | static inline bool tomoyo_is_same_path_acl(const struct tomoyo_path_acl *p1, |
1046 | const struct tomoyo_path_acl *p2) | |
1047 | { | |
1048 | return tomoyo_is_same_acl_head(&p1->head, &p2->head) && | |
1049 | tomoyo_is_same_name_union(&p1->name, &p2->name); | |
1050 | } | |
1051 | ||
a1f9bb6a TH |
1052 | static inline bool tomoyo_is_same_path_number3_acl |
1053 | (const struct tomoyo_path_number3_acl *p1, | |
1054 | const struct tomoyo_path_number3_acl *p2) | |
1055 | { | |
1056 | return tomoyo_is_same_acl_head(&p1->head, &p2->head) | |
1057 | && tomoyo_is_same_name_union(&p1->name, &p2->name) | |
1058 | && tomoyo_is_same_number_union(&p1->mode, &p2->mode) | |
1059 | && tomoyo_is_same_number_union(&p1->major, &p2->major) | |
1060 | && tomoyo_is_same_number_union(&p1->minor, &p2->minor); | |
1061 | } | |
1062 | ||
1063 | ||
7762fbff TH |
1064 | static inline bool tomoyo_is_same_path2_acl(const struct tomoyo_path2_acl *p1, |
1065 | const struct tomoyo_path2_acl *p2) | |
1066 | { | |
1067 | return tomoyo_is_same_acl_head(&p1->head, &p2->head) && | |
1068 | tomoyo_is_same_name_union(&p1->name1, &p2->name1) && | |
1069 | tomoyo_is_same_name_union(&p1->name2, &p2->name2); | |
1070 | } | |
1071 | ||
a1f9bb6a TH |
1072 | static inline bool tomoyo_is_same_path_number_acl |
1073 | (const struct tomoyo_path_number_acl *p1, | |
1074 | const struct tomoyo_path_number_acl *p2) | |
1075 | { | |
1076 | return tomoyo_is_same_acl_head(&p1->head, &p2->head) | |
1077 | && tomoyo_is_same_name_union(&p1->name, &p2->name) | |
1078 | && tomoyo_is_same_number_union(&p1->number, &p2->number); | |
1079 | } | |
1080 | ||
2106ccd9 TH |
1081 | static inline bool tomoyo_is_same_mount_acl(const struct tomoyo_mount_acl *p1, |
1082 | const struct tomoyo_mount_acl *p2) | |
1083 | { | |
1084 | return tomoyo_is_same_acl_head(&p1->head, &p2->head) && | |
1085 | tomoyo_is_same_name_union(&p1->dev_name, &p2->dev_name) && | |
1086 | tomoyo_is_same_name_union(&p1->dir_name, &p2->dir_name) && | |
1087 | tomoyo_is_same_name_union(&p1->fs_type, &p2->fs_type) && | |
1088 | tomoyo_is_same_number_union(&p1->flags, &p2->flags); | |
1089 | } | |
1090 | ||
9e4b50e9 TH |
1091 | static inline bool tomoyo_is_same_domain_initializer_entry |
1092 | (const struct tomoyo_domain_initializer_entry *p1, | |
1093 | const struct tomoyo_domain_initializer_entry *p2) | |
1094 | { | |
1095 | return p1->is_not == p2->is_not && p1->is_last_name == p2->is_last_name | |
1096 | && p1->domainname == p2->domainname | |
1097 | && p1->program == p2->program; | |
1098 | } | |
1099 | ||
1100 | static inline bool tomoyo_is_same_domain_keeper_entry | |
1101 | (const struct tomoyo_domain_keeper_entry *p1, | |
1102 | const struct tomoyo_domain_keeper_entry *p2) | |
1103 | { | |
1104 | return p1->is_not == p2->is_not && p1->is_last_name == p2->is_last_name | |
1105 | && p1->domainname == p2->domainname | |
1106 | && p1->program == p2->program; | |
1107 | } | |
1108 | ||
1084307c TH |
1109 | static inline bool tomoyo_is_same_aggregator_entry |
1110 | (const struct tomoyo_aggregator_entry *p1, | |
1111 | const struct tomoyo_aggregator_entry *p2) | |
1112 | { | |
1113 | return p1->original_name == p2->original_name && | |
1114 | p1->aggregated_name == p2->aggregated_name; | |
1115 | } | |
1116 | ||
9e4b50e9 TH |
1117 | static inline bool tomoyo_is_same_alias_entry |
1118 | (const struct tomoyo_alias_entry *p1, const struct tomoyo_alias_entry *p2) | |
1119 | { | |
1120 | return p1->original_name == p2->original_name && | |
1121 | p1->aliased_name == p2->aliased_name; | |
1122 | } | |
1123 | ||
9590837b KT |
1124 | /** |
1125 | * list_for_each_cookie - iterate over a list with cookie. | |
1126 | * @pos: the &struct list_head to use as a loop cursor. | |
1127 | * @cookie: the &struct list_head to use as a cookie. | |
1128 | * @head: the head for your list. | |
1129 | * | |
fdb8ebb7 | 1130 | * Same with list_for_each_rcu() except that this primitive uses @cookie |
9590837b KT |
1131 | * so that we can continue iteration. |
1132 | * @cookie must be NULL when iteration starts, and @cookie will become | |
1133 | * NULL when iteration finishes. | |
1134 | */ | |
fdb8ebb7 TH |
1135 | #define list_for_each_cookie(pos, cookie, head) \ |
1136 | for (({ if (!cookie) \ | |
1137 | cookie = head; }), \ | |
1138 | pos = rcu_dereference((cookie)->next); \ | |
1139 | prefetch(pos->next), pos != (head) || ((cookie) = NULL); \ | |
1140 | (cookie) = pos, pos = rcu_dereference(pos->next)) | |
1141 | ||
9590837b | 1142 | #endif /* !defined(_SECURITY_TOMOYO_COMMON_H) */ |