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Kentaro Takeda95908372009-02-05 17:18:13 +09001/*
2 * security/tomoyo/common.h
3 *
Tetsuo Handa76bb0892010-02-11 09:42:40 +09004 * Header file for TOMOYO.
Kentaro Takeda95908372009-02-05 17:18:13 +09005 *
Tetsuo Handa76bb0892010-02-11 09:42:40 +09006 * Copyright (C) 2005-2010 NTT DATA CORPORATION
Kentaro Takeda95908372009-02-05 17:18:13 +09007 */
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>
Tetsuo Handa76bb0892010-02-11 09:42:40 +090022#include <linux/cred.h>
Tetsuo Handa17fcfbd2010-05-17 10:11:36 +090023#include <linux/poll.h>
Tetsuo Handa2066a362011-07-08 13:21:37 +090024#include <linux/binfmts.h>
25#include <linux/highmem.h>
Kentaro Takeda95908372009-02-05 17:18:13 +090026
Tetsuo Handa76bb0892010-02-11 09:42:40 +090027/********** 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
Tetsuo Handac8c57e82010-06-03 20:36:43 +090037#define TOMOYO_EXEC_TMPSIZE 4096
Tetsuo Handa76bb0892010-02-11 09:42:40 +090038
39/* Profile number is an integer between 0 and 255. */
40#define TOMOYO_MAX_PROFILES 256
41
Tetsuo Handa32997142011-06-26 23:19:28 +090042/* Group number is an integer between 0 and 255. */
43#define TOMOYO_MAX_ACL_GROUPS 256
44
Tetsuo Handa2066a362011-07-08 13:21:37 +090045/* Index numbers for "struct tomoyo_condition". */
46enum 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() */
Tetsuo Handa5b636852011-07-08 13:24:54 +090057 TOMOYO_EXEC_ARGC, /* "struct linux_binprm *"->argc */
58 TOMOYO_EXEC_ENVC, /* "struct linux_binprm *"->envc */
Tetsuo Handa8761afd2011-07-08 13:22:41 +090059 TOMOYO_TYPE_IS_SOCKET, /* S_IFSOCK */
60 TOMOYO_TYPE_IS_SYMLINK, /* S_IFLNK */
61 TOMOYO_TYPE_IS_FILE, /* S_IFREG */
62 TOMOYO_TYPE_IS_BLOCK_DEV, /* S_IFBLK */
63 TOMOYO_TYPE_IS_DIRECTORY, /* S_IFDIR */
64 TOMOYO_TYPE_IS_CHAR_DEV, /* S_IFCHR */
65 TOMOYO_TYPE_IS_FIFO, /* S_IFIFO */
66 TOMOYO_MODE_SETUID, /* S_ISUID */
67 TOMOYO_MODE_SETGID, /* S_ISGID */
68 TOMOYO_MODE_STICKY, /* S_ISVTX */
69 TOMOYO_MODE_OWNER_READ, /* S_IRUSR */
70 TOMOYO_MODE_OWNER_WRITE, /* S_IWUSR */
71 TOMOYO_MODE_OWNER_EXECUTE, /* S_IXUSR */
72 TOMOYO_MODE_GROUP_READ, /* S_IRGRP */
73 TOMOYO_MODE_GROUP_WRITE, /* S_IWGRP */
74 TOMOYO_MODE_GROUP_EXECUTE, /* S_IXGRP */
75 TOMOYO_MODE_OTHERS_READ, /* S_IROTH */
76 TOMOYO_MODE_OTHERS_WRITE, /* S_IWOTH */
77 TOMOYO_MODE_OTHERS_EXECUTE, /* S_IXOTH */
Tetsuo Handa2ca9bf42011-07-08 13:23:44 +090078 TOMOYO_EXEC_REALPATH,
79 TOMOYO_SYMLINK_TARGET,
Tetsuo Handa8761afd2011-07-08 13:22:41 +090080 TOMOYO_PATH1_UID,
81 TOMOYO_PATH1_GID,
82 TOMOYO_PATH1_INO,
83 TOMOYO_PATH1_MAJOR,
84 TOMOYO_PATH1_MINOR,
85 TOMOYO_PATH1_PERM,
86 TOMOYO_PATH1_TYPE,
87 TOMOYO_PATH1_DEV_MAJOR,
88 TOMOYO_PATH1_DEV_MINOR,
89 TOMOYO_PATH2_UID,
90 TOMOYO_PATH2_GID,
91 TOMOYO_PATH2_INO,
92 TOMOYO_PATH2_MAJOR,
93 TOMOYO_PATH2_MINOR,
94 TOMOYO_PATH2_PERM,
95 TOMOYO_PATH2_TYPE,
96 TOMOYO_PATH2_DEV_MAJOR,
97 TOMOYO_PATH2_DEV_MINOR,
98 TOMOYO_PATH1_PARENT_UID,
99 TOMOYO_PATH1_PARENT_GID,
100 TOMOYO_PATH1_PARENT_INO,
101 TOMOYO_PATH1_PARENT_PERM,
102 TOMOYO_PATH2_PARENT_UID,
103 TOMOYO_PATH2_PARENT_GID,
104 TOMOYO_PATH2_PARENT_INO,
105 TOMOYO_PATH2_PARENT_PERM,
Tetsuo Handa2066a362011-07-08 13:21:37 +0900106 TOMOYO_MAX_CONDITION_KEYWORD,
107 TOMOYO_NUMBER_UNION,
Tetsuo Handa2ca9bf42011-07-08 13:23:44 +0900108 TOMOYO_NAME_UNION,
Tetsuo Handa5b636852011-07-08 13:24:54 +0900109 TOMOYO_ARGV_ENTRY,
110 TOMOYO_ENVP_ENTRY,
Tetsuo Handa2066a362011-07-08 13:21:37 +0900111};
112
Tetsuo Handa8761afd2011-07-08 13:22:41 +0900113
114/* Index numbers for stat(). */
115enum tomoyo_path_stat_index {
116 /* Do not change this order. */
117 TOMOYO_PATH1,
118 TOMOYO_PATH1_PARENT,
119 TOMOYO_PATH2,
120 TOMOYO_PATH2_PARENT,
121 TOMOYO_MAX_PATH_STAT
122};
123
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900124/* Index numbers for operation mode. */
Tetsuo Handacb0abe62010-05-17 10:08:05 +0900125enum tomoyo_mode_index {
126 TOMOYO_CONFIG_DISABLED,
127 TOMOYO_CONFIG_LEARNING,
128 TOMOYO_CONFIG_PERMISSIVE,
Tetsuo Handa57c25902010-06-03 20:38:44 +0900129 TOMOYO_CONFIG_ENFORCING,
Tetsuo Handaeadd99c2011-06-26 23:18:58 +0900130 TOMOYO_CONFIG_MAX_MODE,
131 TOMOYO_CONFIG_WANT_REJECT_LOG = 64,
132 TOMOYO_CONFIG_WANT_GRANT_LOG = 128,
133 TOMOYO_CONFIG_USE_DEFAULT = 255,
Tetsuo Handacb0abe62010-05-17 10:08:05 +0900134};
135
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900136/* Index numbers for entry type. */
Tetsuo Handaa230f9e2010-06-17 16:53:24 +0900137enum tomoyo_policy_id {
138 TOMOYO_ID_GROUP,
139 TOMOYO_ID_PATH_GROUP,
140 TOMOYO_ID_NUMBER_GROUP,
Tetsuo Handa5448ec42010-06-21 11:14:39 +0900141 TOMOYO_ID_TRANSITION_CONTROL,
Tetsuo Handaa230f9e2010-06-17 16:53:24 +0900142 TOMOYO_ID_AGGREGATOR,
Tetsuo Handaa230f9e2010-06-17 16:53:24 +0900143 TOMOYO_ID_MANAGER,
Tetsuo Handa2066a362011-07-08 13:21:37 +0900144 TOMOYO_ID_CONDITION,
Tetsuo Handaa230f9e2010-06-17 16:53:24 +0900145 TOMOYO_ID_NAME,
146 TOMOYO_ID_ACL,
147 TOMOYO_ID_DOMAIN,
148 TOMOYO_MAX_POLICY
149};
150
Tetsuo Handa2c47ab92011-06-26 23:21:19 +0900151/* Index numbers for domain's attributes. */
152enum tomoyo_domain_info_flags_index {
153 /* Quota warnning flag. */
154 TOMOYO_DIF_QUOTA_WARNED,
155 /*
156 * This domain was unable to create a new domain at
157 * tomoyo_find_next_domain() because the name of the domain to be
158 * created was too long or it could not allocate memory.
159 * More than one process continued execve() without domain transition.
160 */
161 TOMOYO_DIF_TRANSITION_FAILED,
162 TOMOYO_MAX_DOMAIN_INFO_FLAGS
163};
164
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900165/* Index numbers for group entries. */
Tetsuo Handaa230f9e2010-06-17 16:53:24 +0900166enum tomoyo_group_id {
167 TOMOYO_PATH_GROUP,
168 TOMOYO_NUMBER_GROUP,
169 TOMOYO_MAX_GROUP
170};
171
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900172/* Index numbers for type of numeric values. */
173enum tomoyo_value_type {
174 TOMOYO_VALUE_TYPE_INVALID,
175 TOMOYO_VALUE_TYPE_DECIMAL,
176 TOMOYO_VALUE_TYPE_OCTAL,
177 TOMOYO_VALUE_TYPE_HEXADECIMAL,
178};
Tetsuo Handa4c3e9e22010-05-17 10:06:58 +0900179
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900180/* Index numbers for domain transition control keywords. */
Tetsuo Handa5448ec42010-06-21 11:14:39 +0900181enum tomoyo_transition_type {
182 /* Do not change this order, */
Tetsuo Handabd03a3e2011-06-26 23:19:52 +0900183 TOMOYO_TRANSITION_CONTROL_NO_RESET,
184 TOMOYO_TRANSITION_CONTROL_RESET,
Tetsuo Handa5448ec42010-06-21 11:14:39 +0900185 TOMOYO_TRANSITION_CONTROL_NO_INITIALIZE,
186 TOMOYO_TRANSITION_CONTROL_INITIALIZE,
187 TOMOYO_TRANSITION_CONTROL_NO_KEEP,
188 TOMOYO_TRANSITION_CONTROL_KEEP,
189 TOMOYO_MAX_TRANSITION_TYPE
190};
191
Tetsuo Handa76bb0892010-02-11 09:42:40 +0900192/* Index numbers for Access Controls. */
Tetsuo Handa084da352010-02-15 15:10:39 +0900193enum tomoyo_acl_entry_type_index {
Tetsuo Handa7ef61232010-02-16 08:03:30 +0900194 TOMOYO_TYPE_PATH_ACL,
195 TOMOYO_TYPE_PATH2_ACL,
Tetsuo Handaa1f9bb62010-05-17 10:09:15 +0900196 TOMOYO_TYPE_PATH_NUMBER_ACL,
Tetsuo Handa75093152010-06-16 16:23:55 +0900197 TOMOYO_TYPE_MKDEV_ACL,
Tetsuo Handa2106ccd2010-05-17 10:10:31 +0900198 TOMOYO_TYPE_MOUNT_ACL,
Tetsuo Handa084da352010-02-15 15:10:39 +0900199};
Tetsuo Handa76bb0892010-02-11 09:42:40 +0900200
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900201/* Index numbers for access controls with one pathname. */
Tetsuo Handa084da352010-02-15 15:10:39 +0900202enum tomoyo_path_acl_index {
Tetsuo Handa7ef61232010-02-16 08:03:30 +0900203 TOMOYO_TYPE_EXECUTE,
204 TOMOYO_TYPE_READ,
205 TOMOYO_TYPE_WRITE,
Tetsuo Handa7c759642011-06-26 23:15:31 +0900206 TOMOYO_TYPE_APPEND,
Tetsuo Handa7ef61232010-02-16 08:03:30 +0900207 TOMOYO_TYPE_UNLINK,
Tetsuo Handa7c759642011-06-26 23:15:31 +0900208 TOMOYO_TYPE_GETATTR,
Tetsuo Handa7ef61232010-02-16 08:03:30 +0900209 TOMOYO_TYPE_RMDIR,
Tetsuo Handa7ef61232010-02-16 08:03:30 +0900210 TOMOYO_TYPE_TRUNCATE,
211 TOMOYO_TYPE_SYMLINK,
Tetsuo Handa7ef61232010-02-16 08:03:30 +0900212 TOMOYO_TYPE_CHROOT,
Tetsuo Handa7ef61232010-02-16 08:03:30 +0900213 TOMOYO_TYPE_UMOUNT,
214 TOMOYO_MAX_PATH_OPERATION
Tetsuo Handa084da352010-02-15 15:10:39 +0900215};
Tetsuo Handa76bb0892010-02-11 09:42:40 +0900216
Tetsuo Handab22b8b92011-06-26 23:21:50 +0900217/* Index numbers for /sys/kernel/security/tomoyo/stat interface. */
Tetsuo Handaeadd99c2011-06-26 23:18:58 +0900218enum tomoyo_memory_stat_type {
219 TOMOYO_MEMORY_POLICY,
220 TOMOYO_MEMORY_AUDIT,
221 TOMOYO_MEMORY_QUERY,
222 TOMOYO_MAX_MEMORY_STAT
223};
224
Tetsuo Handa75093152010-06-16 16:23:55 +0900225enum tomoyo_mkdev_acl_index {
Tetsuo Handaa1f9bb62010-05-17 10:09:15 +0900226 TOMOYO_TYPE_MKBLOCK,
227 TOMOYO_TYPE_MKCHAR,
Tetsuo Handa75093152010-06-16 16:23:55 +0900228 TOMOYO_MAX_MKDEV_OPERATION
Tetsuo Handaa1f9bb62010-05-17 10:09:15 +0900229};
230
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900231/* Index numbers for access controls with two pathnames. */
Tetsuo Handa084da352010-02-15 15:10:39 +0900232enum tomoyo_path2_acl_index {
Tetsuo Handa7ef61232010-02-16 08:03:30 +0900233 TOMOYO_TYPE_LINK,
234 TOMOYO_TYPE_RENAME,
235 TOMOYO_TYPE_PIVOT_ROOT,
236 TOMOYO_MAX_PATH2_OPERATION
Tetsuo Handa084da352010-02-15 15:10:39 +0900237};
Tetsuo Handa76bb0892010-02-11 09:42:40 +0900238
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900239/* Index numbers for access controls with one pathname and one number. */
Tetsuo Handaa1f9bb62010-05-17 10:09:15 +0900240enum tomoyo_path_number_acl_index {
241 TOMOYO_TYPE_CREATE,
242 TOMOYO_TYPE_MKDIR,
243 TOMOYO_TYPE_MKFIFO,
244 TOMOYO_TYPE_MKSOCK,
245 TOMOYO_TYPE_IOCTL,
246 TOMOYO_TYPE_CHMOD,
247 TOMOYO_TYPE_CHOWN,
248 TOMOYO_TYPE_CHGRP,
249 TOMOYO_MAX_PATH_NUMBER_OPERATION
250};
251
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900252/* Index numbers for /sys/kernel/security/tomoyo/ interfaces. */
Tetsuo Handa084da352010-02-15 15:10:39 +0900253enum tomoyo_securityfs_interface_index {
254 TOMOYO_DOMAINPOLICY,
255 TOMOYO_EXCEPTIONPOLICY,
Tetsuo Handa084da352010-02-15 15:10:39 +0900256 TOMOYO_PROCESS_STATUS,
Tetsuo Handab22b8b92011-06-26 23:21:50 +0900257 TOMOYO_STAT,
Tetsuo Handa084da352010-02-15 15:10:39 +0900258 TOMOYO_SELFDOMAIN,
Tetsuo Handaeadd99c2011-06-26 23:18:58 +0900259 TOMOYO_AUDIT,
Tetsuo Handa084da352010-02-15 15:10:39 +0900260 TOMOYO_VERSION,
261 TOMOYO_PROFILE,
Tetsuo Handa17fcfbd2010-05-17 10:11:36 +0900262 TOMOYO_QUERY,
Tetsuo Handa084da352010-02-15 15:10:39 +0900263 TOMOYO_MANAGER
264};
Tetsuo Handa76bb0892010-02-11 09:42:40 +0900265
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900266/* Index numbers for special mount operations. */
267enum tomoyo_special_mount {
268 TOMOYO_MOUNT_BIND, /* mount --bind /source /dest */
269 TOMOYO_MOUNT_MOVE, /* mount --move /old /new */
270 TOMOYO_MOUNT_REMOUNT, /* mount -o remount /dir */
271 TOMOYO_MOUNT_MAKE_UNBINDABLE, /* mount --make-unbindable /dir */
272 TOMOYO_MOUNT_MAKE_PRIVATE, /* mount --make-private /dir */
273 TOMOYO_MOUNT_MAKE_SLAVE, /* mount --make-slave /dir */
274 TOMOYO_MOUNT_MAKE_SHARED, /* mount --make-shared /dir */
275 TOMOYO_MAX_SPECIAL_MOUNT
276};
277
278/* Index numbers for functionality. */
Tetsuo Handa57c25902010-06-03 20:38:44 +0900279enum tomoyo_mac_index {
280 TOMOYO_MAC_FILE_EXECUTE,
281 TOMOYO_MAC_FILE_OPEN,
282 TOMOYO_MAC_FILE_CREATE,
283 TOMOYO_MAC_FILE_UNLINK,
Tetsuo Handa7c759642011-06-26 23:15:31 +0900284 TOMOYO_MAC_FILE_GETATTR,
Tetsuo Handa57c25902010-06-03 20:38:44 +0900285 TOMOYO_MAC_FILE_MKDIR,
286 TOMOYO_MAC_FILE_RMDIR,
287 TOMOYO_MAC_FILE_MKFIFO,
288 TOMOYO_MAC_FILE_MKSOCK,
289 TOMOYO_MAC_FILE_TRUNCATE,
290 TOMOYO_MAC_FILE_SYMLINK,
Tetsuo Handa57c25902010-06-03 20:38:44 +0900291 TOMOYO_MAC_FILE_MKBLOCK,
292 TOMOYO_MAC_FILE_MKCHAR,
293 TOMOYO_MAC_FILE_LINK,
294 TOMOYO_MAC_FILE_RENAME,
295 TOMOYO_MAC_FILE_CHMOD,
296 TOMOYO_MAC_FILE_CHOWN,
297 TOMOYO_MAC_FILE_CHGRP,
298 TOMOYO_MAC_FILE_IOCTL,
299 TOMOYO_MAC_FILE_CHROOT,
300 TOMOYO_MAC_FILE_MOUNT,
301 TOMOYO_MAC_FILE_UMOUNT,
302 TOMOYO_MAC_FILE_PIVOT_ROOT,
303 TOMOYO_MAX_MAC_INDEX
304};
305
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900306/* Index numbers for category of functionality. */
Tetsuo Handa57c25902010-06-03 20:38:44 +0900307enum tomoyo_mac_category_index {
308 TOMOYO_MAC_CATEGORY_FILE,
309 TOMOYO_MAX_MAC_CATEGORY_INDEX
310};
311
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900312/*
313 * Retry this request. Returned by tomoyo_supervisor() if policy violation has
314 * occurred in enforcing mode and the userspace daemon decided to retry.
315 *
316 * We must choose a positive value in order to distinguish "granted" (which is
317 * 0) and "rejected" (which is a negative value) and "retry".
318 */
319#define TOMOYO_RETRY_REQUEST 1
Tetsuo Handa17fcfbd2010-05-17 10:11:36 +0900320
Tetsuo Handab22b8b92011-06-26 23:21:50 +0900321/* Index numbers for /sys/kernel/security/tomoyo/stat interface. */
322enum tomoyo_policy_stat_type {
323 /* Do not change this order. */
324 TOMOYO_STAT_POLICY_UPDATES,
325 TOMOYO_STAT_POLICY_LEARNING, /* == TOMOYO_CONFIG_LEARNING */
326 TOMOYO_STAT_POLICY_PERMISSIVE, /* == TOMOYO_CONFIG_PERMISSIVE */
327 TOMOYO_STAT_POLICY_ENFORCING, /* == TOMOYO_CONFIG_ENFORCING */
328 TOMOYO_MAX_POLICY_STAT
329};
330
Tetsuo Handad5ca1722011-06-26 23:18:21 +0900331/* Index numbers for profile's PREFERENCE values. */
332enum tomoyo_pref_index {
Tetsuo Handaeadd99c2011-06-26 23:18:58 +0900333 TOMOYO_PREF_MAX_AUDIT_LOG,
Tetsuo Handad5ca1722011-06-26 23:18:21 +0900334 TOMOYO_PREF_MAX_LEARNING_ENTRY,
335 TOMOYO_MAX_PREF
336};
337
Tetsuo Handa76bb0892010-02-11 09:42:40 +0900338/********** Structure definitions. **********/
Kentaro Takeda95908372009-02-05 17:18:13 +0900339
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900340/* Common header for holding ACL entries. */
Tetsuo Handa82e0f002010-06-15 09:22:42 +0900341struct tomoyo_acl_head {
342 struct list_head list;
343 bool is_deleted;
344} __packed;
345
Tetsuo Handa0df7e8b2011-06-26 23:16:36 +0900346/* Common header for shared entries. */
347struct tomoyo_shared_acl_head {
348 struct list_head list;
349 atomic_t users;
350} __packed;
351
Tetsuo Handabd03a3e2011-06-26 23:19:52 +0900352struct tomoyo_policy_namespace;
353
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900354/* Structure for request info. */
Tetsuo Handacb0abe62010-05-17 10:08:05 +0900355struct tomoyo_request_info {
Tetsuo Handa8761afd2011-07-08 13:22:41 +0900356 /*
357 * For holding parameters specific to operations which deal files.
358 * NULL if not dealing files.
359 */
360 struct tomoyo_obj_info *obj;
Tetsuo Handa2ca9bf42011-07-08 13:23:44 +0900361 /*
362 * For holding parameters specific to execve() request.
363 * NULL if not dealing do_execve().
364 */
365 struct tomoyo_execve *ee;
Tetsuo Handacb0abe62010-05-17 10:08:05 +0900366 struct tomoyo_domain_info *domain;
Tetsuo Handacf6e9a62010-06-16 16:21:36 +0900367 /* For holding parameters. */
368 union {
369 struct {
370 const struct tomoyo_path_info *filename;
Tetsuo Handa484ca792010-07-29 14:29:55 +0900371 /* For using wildcards at tomoyo_find_next_domain(). */
372 const struct tomoyo_path_info *matched_path;
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900373 /* One of values in "enum tomoyo_path_acl_index". */
Tetsuo Handacf6e9a62010-06-16 16:21:36 +0900374 u8 operation;
375 } path;
376 struct {
377 const struct tomoyo_path_info *filename1;
378 const struct tomoyo_path_info *filename2;
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900379 /* One of values in "enum tomoyo_path2_acl_index". */
Tetsuo Handacf6e9a62010-06-16 16:21:36 +0900380 u8 operation;
381 } path2;
382 struct {
383 const struct tomoyo_path_info *filename;
384 unsigned int mode;
385 unsigned int major;
386 unsigned int minor;
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900387 /* One of values in "enum tomoyo_mkdev_acl_index". */
Tetsuo Handacf6e9a62010-06-16 16:21:36 +0900388 u8 operation;
389 } mkdev;
390 struct {
391 const struct tomoyo_path_info *filename;
392 unsigned long number;
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900393 /*
394 * One of values in
395 * "enum tomoyo_path_number_acl_index".
396 */
Tetsuo Handacf6e9a62010-06-16 16:21:36 +0900397 u8 operation;
398 } path_number;
399 struct {
400 const struct tomoyo_path_info *type;
401 const struct tomoyo_path_info *dir;
402 const struct tomoyo_path_info *dev;
403 unsigned long flags;
404 int need_dev;
405 } mount;
406 } param;
407 u8 param_type;
408 bool granted;
Tetsuo Handa17fcfbd2010-05-17 10:11:36 +0900409 u8 retry;
410 u8 profile;
Tetsuo Handacb0abe62010-05-17 10:08:05 +0900411 u8 mode; /* One of tomoyo_mode_index . */
Tetsuo Handa57c25902010-06-03 20:38:44 +0900412 u8 type;
Tetsuo Handacb0abe62010-05-17 10:08:05 +0900413};
414
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900415/* Structure for holding a token. */
Kentaro Takeda95908372009-02-05 17:18:13 +0900416struct tomoyo_path_info {
417 const char *name;
418 u32 hash; /* = full_name_hash(name, strlen(name)) */
Kentaro Takeda95908372009-02-05 17:18:13 +0900419 u16 const_len; /* = tomoyo_const_part_length(name) */
420 bool is_dir; /* = tomoyo_strendswith(name, "/") */
421 bool is_patterned; /* = tomoyo_path_contains_pattern(name) */
Kentaro Takeda95908372009-02-05 17:18:13 +0900422};
423
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900424/* Structure for holding string data. */
Tetsuo Handae2bf6902010-06-25 11:16:00 +0900425struct tomoyo_name {
Tetsuo Handa0df7e8b2011-06-26 23:16:36 +0900426 struct tomoyo_shared_acl_head head;
Tetsuo Handa76bb0892010-02-11 09:42:40 +0900427 struct tomoyo_path_info entry;
428};
Kentaro Takeda95908372009-02-05 17:18:13 +0900429
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900430/* Structure for holding a word. */
Tetsuo Handa7762fbf2010-05-10 17:30:26 +0900431struct tomoyo_name_union {
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900432 /* Either @filename or @group is NULL. */
Tetsuo Handa7762fbf2010-05-10 17:30:26 +0900433 const struct tomoyo_path_info *filename;
Tetsuo Handaa98aa4d2010-06-17 16:52:29 +0900434 struct tomoyo_group *group;
Tetsuo Handa7762fbf2010-05-10 17:30:26 +0900435};
436
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900437/* Structure for holding a number. */
Tetsuo Handa4c3e9e22010-05-17 10:06:58 +0900438struct tomoyo_number_union {
439 unsigned long values[2];
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900440 struct tomoyo_group *group; /* Maybe NULL. */
441 /* One of values in "enum tomoyo_value_type". */
Tetsuo Handa0df7e8b2011-06-26 23:16:36 +0900442 u8 value_type[2];
Tetsuo Handa4c3e9e22010-05-17 10:06:58 +0900443};
444
Tetsuo Handaa98aa4d2010-06-17 16:52:29 +0900445/* Structure for "path_group"/"number_group" directive. */
446struct tomoyo_group {
Tetsuo Handa0df7e8b2011-06-26 23:16:36 +0900447 struct tomoyo_shared_acl_head head;
Tetsuo Handaa98aa4d2010-06-17 16:52:29 +0900448 const struct tomoyo_path_info *group_name;
449 struct list_head member_list;
Tetsuo Handaa98aa4d2010-06-17 16:52:29 +0900450};
451
Tetsuo Handa7762fbf2010-05-10 17:30:26 +0900452/* Structure for "path_group" directive. */
453struct tomoyo_path_group {
Tetsuo Handa82e0f002010-06-15 09:22:42 +0900454 struct tomoyo_acl_head head;
Tetsuo Handa7762fbf2010-05-10 17:30:26 +0900455 const struct tomoyo_path_info *member_name;
456};
457
Tetsuo Handa4c3e9e22010-05-17 10:06:58 +0900458/* Structure for "number_group" directive. */
Tetsuo Handaa98aa4d2010-06-17 16:52:29 +0900459struct tomoyo_number_group {
Tetsuo Handa82e0f002010-06-15 09:22:42 +0900460 struct tomoyo_acl_head head;
Tetsuo Handa4c3e9e22010-05-17 10:06:58 +0900461 struct tomoyo_number_union number;
462};
463
Tetsuo Handa8761afd2011-07-08 13:22:41 +0900464/* Subset of "struct stat". Used by conditional ACL and audit logs. */
465struct tomoyo_mini_stat {
466 uid_t uid;
467 gid_t gid;
468 ino_t ino;
469 mode_t mode;
470 dev_t dev;
471 dev_t rdev;
472};
473
Tetsuo Handa5b636852011-07-08 13:24:54 +0900474/* Structure for dumping argv[] and envp[] of "struct linux_binprm". */
475struct tomoyo_page_dump {
476 struct page *page; /* Previously dumped page. */
477 char *data; /* Contents of "page". Size is PAGE_SIZE. */
478};
479
Tetsuo Handa8761afd2011-07-08 13:22:41 +0900480/* Structure for attribute checks in addition to pathname checks. */
481struct tomoyo_obj_info {
482 /*
483 * True if tomoyo_get_attributes() was already called, false otherwise.
484 */
485 bool validate_done;
486 /* True if @stat[] is valid. */
487 bool stat_valid[TOMOYO_MAX_PATH_STAT];
488 /* First pathname. Initialized with { NULL, NULL } if no path. */
489 struct path path1;
490 /* Second pathname. Initialized with { NULL, NULL } if no path. */
491 struct path path2;
492 /*
493 * Information on @path1, @path1's parent directory, @path2, @path2's
494 * parent directory.
495 */
496 struct tomoyo_mini_stat stat[TOMOYO_MAX_PATH_STAT];
Tetsuo Handa2ca9bf42011-07-08 13:23:44 +0900497 /*
498 * Content of symbolic link to be created. NULL for operations other
499 * than symlink().
500 */
501 struct tomoyo_path_info *symlink_target;
502};
503
Tetsuo Handa5b636852011-07-08 13:24:54 +0900504/* Structure for argv[]. */
505struct tomoyo_argv {
506 unsigned long index;
507 const struct tomoyo_path_info *value;
508 bool is_not;
509};
510
511/* Structure for envp[]. */
512struct tomoyo_envp {
513 const struct tomoyo_path_info *name;
514 const struct tomoyo_path_info *value;
515 bool is_not;
516};
517
Tetsuo Handa2ca9bf42011-07-08 13:23:44 +0900518/* Structure for execve() operation. */
519struct tomoyo_execve {
520 struct tomoyo_request_info r;
521 struct tomoyo_obj_info obj;
522 struct linux_binprm *bprm;
Tetsuo Handa5b636852011-07-08 13:24:54 +0900523 /* For dumping argv[] and envp[]. */
524 struct tomoyo_page_dump dump;
Tetsuo Handa2ca9bf42011-07-08 13:23:44 +0900525 /* For temporary use. */
526 char *tmp; /* Size is TOMOYO_EXEC_TMPSIZE bytes */
Tetsuo Handa8761afd2011-07-08 13:22:41 +0900527};
528
Tetsuo Handa2066a362011-07-08 13:21:37 +0900529/* Structure for entries which follows "struct tomoyo_condition". */
530struct tomoyo_condition_element {
Tetsuo Handa5b636852011-07-08 13:24:54 +0900531 /*
532 * Left hand operand. A "struct tomoyo_argv" for TOMOYO_ARGV_ENTRY, a
533 * "struct tomoyo_envp" for TOMOYO_ENVP_ENTRY is attached to the tail
534 * of the array of this struct.
535 */
Tetsuo Handa2066a362011-07-08 13:21:37 +0900536 u8 left;
Tetsuo Handa5b636852011-07-08 13:24:54 +0900537 /*
538 * Right hand operand. A "struct tomoyo_number_union" for
539 * TOMOYO_NUMBER_UNION, a "struct tomoyo_name_union" for
540 * TOMOYO_NAME_UNION is attached to the tail of the array of this
541 * struct.
542 */
Tetsuo Handa2066a362011-07-08 13:21:37 +0900543 u8 right;
544 /* Equation operator. True if equals or overlaps, false otherwise. */
545 bool equals;
546};
547
548/* Structure for optional arguments. */
549struct tomoyo_condition {
550 struct tomoyo_shared_acl_head head;
551 u32 size; /* Memory size allocated for this entry. */
552 u16 condc; /* Number of conditions in this struct. */
553 u16 numbers_count; /* Number of "struct tomoyo_number_union values". */
Tetsuo Handa2ca9bf42011-07-08 13:23:44 +0900554 u16 names_count; /* Number of "struct tomoyo_name_union names". */
Tetsuo Handa5b636852011-07-08 13:24:54 +0900555 u16 argc; /* Number of "struct tomoyo_argv". */
556 u16 envc; /* Number of "struct tomoyo_envp". */
Tetsuo Handa2066a362011-07-08 13:21:37 +0900557 /*
558 * struct tomoyo_condition_element condition[condc];
559 * struct tomoyo_number_union values[numbers_count];
Tetsuo Handa2ca9bf42011-07-08 13:23:44 +0900560 * struct tomoyo_name_union names[names_count];
Tetsuo Handa5b636852011-07-08 13:24:54 +0900561 * struct tomoyo_argv argv[argc];
562 * struct tomoyo_envp envp[envc];
Tetsuo Handa2066a362011-07-08 13:21:37 +0900563 */
564};
565
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900566/* Common header for individual entries. */
Kentaro Takeda95908372009-02-05 17:18:13 +0900567struct tomoyo_acl_info {
568 struct list_head list;
Tetsuo Handa2066a362011-07-08 13:21:37 +0900569 struct tomoyo_condition *cond; /* Maybe NULL. */
Tetsuo Handa237ab452010-06-12 20:46:22 +0900570 bool is_deleted;
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900571 u8 type; /* One of values in "enum tomoyo_acl_entry_type_index". */
Kentaro Takeda95908372009-02-05 17:18:13 +0900572} __packed;
573
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900574/* Structure for domain information. */
Kentaro Takeda95908372009-02-05 17:18:13 +0900575struct tomoyo_domain_info {
576 struct list_head list;
577 struct list_head acl_info_list;
578 /* Name of this domain. Never NULL. */
579 const struct tomoyo_path_info *domainname;
Tetsuo Handabd03a3e2011-06-26 23:19:52 +0900580 /* Namespace for this domain. Never NULL. */
581 struct tomoyo_policy_namespace *ns;
Kentaro Takeda95908372009-02-05 17:18:13 +0900582 u8 profile; /* Profile number to use. */
Tetsuo Handa32997142011-06-26 23:19:28 +0900583 u8 group; /* Group number to use. */
Tetsuo Handaa0558fc2009-04-06 20:49:14 +0900584 bool is_deleted; /* Delete flag. */
Tetsuo Handa2c47ab92011-06-26 23:21:19 +0900585 bool flags[TOMOYO_MAX_DOMAIN_INFO_FLAGS];
Tetsuo Handaec8e6a42010-02-11 09:43:20 +0900586 atomic_t users; /* Number of referring credentials. */
Kentaro Takeda95908372009-02-05 17:18:13 +0900587};
588
Kentaro Takeda95908372009-02-05 17:18:13 +0900589/*
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900590 * Structure for "file execute", "file read", "file write", "file append",
591 * "file unlink", "file getattr", "file rmdir", "file truncate",
592 * "file symlink", "file chroot" and "file unmount" directive.
Kentaro Takeda95908372009-02-05 17:18:13 +0900593 */
Tetsuo Handa7ef61232010-02-16 08:03:30 +0900594struct tomoyo_path_acl {
595 struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH_ACL */
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900596 u16 perm; /* Bitmask of values in "enum tomoyo_path_acl_index". */
Tetsuo Handa7762fbf2010-05-10 17:30:26 +0900597 struct tomoyo_name_union name;
Kentaro Takeda95908372009-02-05 17:18:13 +0900598};
599
Tetsuo Handac3fa1092009-06-08 12:37:39 +0900600/*
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900601 * Structure for "file create", "file mkdir", "file mkfifo", "file mksock",
602 * "file ioctl", "file chmod", "file chown" and "file chgrp" directive.
Tetsuo Handaa1f9bb62010-05-17 10:09:15 +0900603 */
604struct tomoyo_path_number_acl {
605 struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH_NUMBER_ACL */
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900606 /* Bitmask of values in "enum tomoyo_path_number_acl_index". */
Tetsuo Handaa1f9bb62010-05-17 10:09:15 +0900607 u8 perm;
608 struct tomoyo_name_union name;
609 struct tomoyo_number_union number;
610};
611
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900612/* Structure for "file mkblock" and "file mkchar" directive. */
Tetsuo Handa75093152010-06-16 16:23:55 +0900613struct tomoyo_mkdev_acl {
614 struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_MKDEV_ACL */
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900615 u8 perm; /* Bitmask of values in "enum tomoyo_mkdev_acl_index". */
Tetsuo Handaa1f9bb62010-05-17 10:09:15 +0900616 struct tomoyo_name_union name;
617 struct tomoyo_number_union mode;
618 struct tomoyo_number_union major;
619 struct tomoyo_number_union minor;
620};
621
622/*
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900623 * Structure for "file rename", "file link" and "file pivot_root" directive.
Tetsuo Handac3fa1092009-06-08 12:37:39 +0900624 */
Tetsuo Handa7ef61232010-02-16 08:03:30 +0900625struct tomoyo_path2_acl {
626 struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH2_ACL */
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900627 u8 perm; /* Bitmask of values in "enum tomoyo_path2_acl_index". */
Tetsuo Handa7762fbf2010-05-10 17:30:26 +0900628 struct tomoyo_name_union name1;
629 struct tomoyo_name_union name2;
Kentaro Takeda95908372009-02-05 17:18:13 +0900630};
631
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900632/* Structure for "file mount" directive. */
Tetsuo Handa2106ccd2010-05-17 10:10:31 +0900633struct tomoyo_mount_acl {
634 struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_MOUNT_ACL */
Tetsuo Handa2106ccd2010-05-17 10:10:31 +0900635 struct tomoyo_name_union dev_name;
636 struct tomoyo_name_union dir_name;
637 struct tomoyo_name_union fs_type;
638 struct tomoyo_number_union flags;
639};
640
Tetsuo Handaa238cf52011-06-26 23:17:10 +0900641/* Structure for holding a line from /sys/kernel/security/tomoyo/ interface. */
642struct tomoyo_acl_param {
643 char *data;
644 struct list_head *list;
Tetsuo Handabd03a3e2011-06-26 23:19:52 +0900645 struct tomoyo_policy_namespace *ns;
Tetsuo Handaa238cf52011-06-26 23:17:10 +0900646 bool is_delete;
647};
648
Tetsuo Handa0d2171d2011-06-26 23:17:46 +0900649#define TOMOYO_MAX_IO_READ_QUEUE 64
Tetsuo Handaf23571e2010-06-24 14:57:16 +0900650
Tetsuo Handa2106ccd2010-05-17 10:10:31 +0900651/*
Tetsuo Handaf23571e2010-06-24 14:57:16 +0900652 * Structure for reading/writing policy via /sys/kernel/security/tomoyo
653 * interfaces.
Tetsuo Handac3fa1092009-06-08 12:37:39 +0900654 */
Kentaro Takeda95908372009-02-05 17:18:13 +0900655struct tomoyo_io_buffer {
Tetsuo Handa8fbe71f2010-06-16 16:29:59 +0900656 void (*read) (struct tomoyo_io_buffer *);
Kentaro Takeda95908372009-02-05 17:18:13 +0900657 int (*write) (struct tomoyo_io_buffer *);
Tetsuo Handa17fcfbd2010-05-17 10:11:36 +0900658 int (*poll) (struct file *file, poll_table *wait);
Kentaro Takeda95908372009-02-05 17:18:13 +0900659 /* Exclusive lock for this structure. */
660 struct mutex io_sem;
Tetsuo Handaf23571e2010-06-24 14:57:16 +0900661 char __user *read_user_buf;
Tetsuo Handa2c47ab92011-06-26 23:21:19 +0900662 size_t read_user_buf_avail;
Tetsuo Handaf23571e2010-06-24 14:57:16 +0900663 struct {
Tetsuo Handabd03a3e2011-06-26 23:19:52 +0900664 struct list_head *ns;
Tetsuo Handaf23571e2010-06-24 14:57:16 +0900665 struct list_head *domain;
666 struct list_head *group;
667 struct list_head *acl;
Tetsuo Handa2c47ab92011-06-26 23:21:19 +0900668 size_t avail;
669 unsigned int step;
670 unsigned int query_index;
Tetsuo Handaf23571e2010-06-24 14:57:16 +0900671 u16 index;
Tetsuo Handa2066a362011-07-08 13:21:37 +0900672 u16 cond_index;
Tetsuo Handa32997142011-06-26 23:19:28 +0900673 u8 acl_group_index;
Tetsuo Handa2066a362011-07-08 13:21:37 +0900674 u8 cond_step;
Tetsuo Handaf23571e2010-06-24 14:57:16 +0900675 u8 bit;
676 u8 w_pos;
677 bool eof;
678 bool print_this_domain_only;
Tetsuo Handabd03a3e2011-06-26 23:19:52 +0900679 bool print_transition_related_only;
Tetsuo Handa2066a362011-07-08 13:21:37 +0900680 bool print_cond_part;
Tetsuo Handaf23571e2010-06-24 14:57:16 +0900681 const char *w[TOMOYO_MAX_IO_READ_QUEUE];
682 } r;
Tetsuo Handa0df7e8b2011-06-26 23:16:36 +0900683 struct {
Tetsuo Handabd03a3e2011-06-26 23:19:52 +0900684 struct tomoyo_policy_namespace *ns;
Tetsuo Handa0df7e8b2011-06-26 23:16:36 +0900685 /* The position currently writing to. */
686 struct tomoyo_domain_info *domain;
687 /* Bytes available for writing. */
Tetsuo Handa2c47ab92011-06-26 23:21:19 +0900688 size_t avail;
Tetsuo Handabd03a3e2011-06-26 23:19:52 +0900689 bool is_delete;
Tetsuo Handa0df7e8b2011-06-26 23:16:36 +0900690 } w;
Kentaro Takeda95908372009-02-05 17:18:13 +0900691 /* Buffer for reading. */
692 char *read_buf;
Kentaro Takeda95908372009-02-05 17:18:13 +0900693 /* Size of read buffer. */
Tetsuo Handa2c47ab92011-06-26 23:21:19 +0900694 size_t readbuf_size;
Kentaro Takeda95908372009-02-05 17:18:13 +0900695 /* Buffer for writing. */
696 char *write_buf;
Kentaro Takeda95908372009-02-05 17:18:13 +0900697 /* Size of write buffer. */
Tetsuo Handa2c47ab92011-06-26 23:21:19 +0900698 size_t writebuf_size;
Tetsuo Handa17fcfbd2010-05-17 10:11:36 +0900699 /* Type of this interface. */
Tetsuo Handa2c47ab92011-06-26 23:21:19 +0900700 enum tomoyo_securityfs_interface_index type;
Tetsuo Handa2e503bb2011-06-26 23:20:55 +0900701 /* Users counter protected by tomoyo_io_buffer_list_lock. */
702 u8 users;
703 /* List for telling GC not to kfree() elements. */
704 struct list_head list;
Kentaro Takeda95908372009-02-05 17:18:13 +0900705};
706
Tetsuo Handa76bb0892010-02-11 09:42:40 +0900707/*
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900708 * Structure for "initialize_domain"/"no_initialize_domain"/"keep_domain"/
709 * "no_keep_domain" keyword.
Tetsuo Handa76bb0892010-02-11 09:42:40 +0900710 */
Tetsuo Handa5448ec42010-06-21 11:14:39 +0900711struct tomoyo_transition_control {
Tetsuo Handa82e0f002010-06-15 09:22:42 +0900712 struct tomoyo_acl_head head;
Tetsuo Handa5448ec42010-06-21 11:14:39 +0900713 u8 type; /* One of values in "enum tomoyo_transition_type". */
Tetsuo Handa76bb0892010-02-11 09:42:40 +0900714 /* True if the domainname is tomoyo_get_last_name(). */
715 bool is_last_name;
Tetsuo Handa5448ec42010-06-21 11:14:39 +0900716 const struct tomoyo_path_info *domainname; /* Maybe NULL */
717 const struct tomoyo_path_info *program; /* Maybe NULL */
Tetsuo Handa76bb0892010-02-11 09:42:40 +0900718};
719
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900720/* Structure for "aggregator" keyword. */
Tetsuo Handae2bf6902010-06-25 11:16:00 +0900721struct tomoyo_aggregator {
Tetsuo Handa82e0f002010-06-15 09:22:42 +0900722 struct tomoyo_acl_head head;
Tetsuo Handa10843072010-06-03 20:38:03 +0900723 const struct tomoyo_path_info *original_name;
724 const struct tomoyo_path_info *aggregated_name;
Tetsuo Handa10843072010-06-03 20:38:03 +0900725};
726
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900727/* Structure for policy manager. */
Tetsuo Handae2bf6902010-06-25 11:16:00 +0900728struct tomoyo_manager {
Tetsuo Handa82e0f002010-06-15 09:22:42 +0900729 struct tomoyo_acl_head head;
730 bool is_domain; /* True if manager is a domainname. */
Tetsuo Handa76bb0892010-02-11 09:42:40 +0900731 /* A path to program or a domainname. */
732 const struct tomoyo_path_info *manager;
Tetsuo Handa76bb0892010-02-11 09:42:40 +0900733};
734
Tetsuo Handa57c25902010-06-03 20:38:44 +0900735struct tomoyo_preference {
736 unsigned int learning_max_entry;
737 bool enforcing_verbose;
738 bool learning_verbose;
739 bool permissive_verbose;
740};
741
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900742/* Structure for /sys/kernel/security/tomnoyo/profile interface. */
Tetsuo Handa57c25902010-06-03 20:38:44 +0900743struct tomoyo_profile {
744 const struct tomoyo_path_info *comment;
745 struct tomoyo_preference *learning;
746 struct tomoyo_preference *permissive;
747 struct tomoyo_preference *enforcing;
748 struct tomoyo_preference preference;
749 u8 default_config;
750 u8 config[TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX];
Tetsuo Handad5ca1722011-06-26 23:18:21 +0900751 unsigned int pref[TOMOYO_MAX_PREF];
Tetsuo Handa57c25902010-06-03 20:38:44 +0900752};
753
Tetsuo Handaeadd99c2011-06-26 23:18:58 +0900754/* Structure for representing YYYY/MM/DD hh/mm/ss. */
755struct tomoyo_time {
756 u16 year;
757 u8 month;
758 u8 day;
759 u8 hour;
760 u8 min;
761 u8 sec;
762};
763
Tetsuo Handabd03a3e2011-06-26 23:19:52 +0900764/* Structure for policy namespace. */
765struct tomoyo_policy_namespace {
766 /* Profile table. Memory is allocated as needed. */
767 struct tomoyo_profile *profile_ptr[TOMOYO_MAX_PROFILES];
768 /* List of "struct tomoyo_group". */
769 struct list_head group_list[TOMOYO_MAX_GROUP];
770 /* List of policy. */
771 struct list_head policy_list[TOMOYO_MAX_POLICY];
772 /* The global ACL referred by "use_group" keyword. */
773 struct list_head acl_group[TOMOYO_MAX_ACL_GROUPS];
774 /* List for connecting to tomoyo_namespace_list list. */
775 struct list_head namespace_list;
776 /* Profile version. Currently only 20100903 is defined. */
777 unsigned int profile_version;
778 /* Name of this namespace (e.g. "<kernel>", "</usr/sbin/httpd>" ). */
779 const char *name;
780};
781
Tetsuo Handa76bb0892010-02-11 09:42:40 +0900782/********** Function prototypes. **********/
783
Tetsuo Handa2106ccd2010-05-17 10:10:31 +0900784bool tomoyo_compare_number_union(const unsigned long value,
785 const struct tomoyo_number_union *ptr);
Tetsuo Handa2066a362011-07-08 13:21:37 +0900786bool tomoyo_condition(struct tomoyo_request_info *r,
787 const struct tomoyo_condition *cond);
Tetsuo Handa75093152010-06-16 16:23:55 +0900788bool tomoyo_correct_domain(const unsigned char *domainname);
Tetsuo Handa75093152010-06-16 16:23:55 +0900789bool tomoyo_correct_path(const char *filename);
790bool tomoyo_correct_word(const char *string);
Tetsuo Handa75093152010-06-16 16:23:55 +0900791bool tomoyo_domain_def(const unsigned char *buffer);
Tetsuo Handa3ddf17f2011-06-29 14:22:37 +0900792bool tomoyo_domain_quota_is_ok(struct tomoyo_request_info *r);
Tetsuo Handa5b636852011-07-08 13:24:54 +0900793bool tomoyo_dump_page(struct linux_binprm *bprm, unsigned long pos,
794 struct tomoyo_page_dump *dump);
Tetsuo Handa3ddf17f2011-06-29 14:22:37 +0900795bool tomoyo_memory_ok(void *ptr);
Tetsuo Handa4c3e9e22010-05-17 10:06:58 +0900796bool tomoyo_number_matches_group(const unsigned long min,
797 const unsigned long max,
Tetsuo Handaa98aa4d2010-06-17 16:52:29 +0900798 const struct tomoyo_group *group);
Tetsuo Handa3ddf17f2011-06-29 14:22:37 +0900799bool tomoyo_parse_name_union(struct tomoyo_acl_param *param,
800 struct tomoyo_name_union *ptr);
Tetsuo Handaa238cf52011-06-26 23:17:10 +0900801bool tomoyo_parse_number_union(struct tomoyo_acl_param *param,
802 struct tomoyo_number_union *ptr);
Tetsuo Handa3ddf17f2011-06-29 14:22:37 +0900803bool tomoyo_path_matches_pattern(const struct tomoyo_path_info *filename,
804 const struct tomoyo_path_info *pattern);
805bool tomoyo_permstr(const char *string, const char *keyword);
806bool tomoyo_str_starts(char **src, const char *find);
807char *tomoyo_encode(const char *str);
808char *tomoyo_init_log(struct tomoyo_request_info *r, int len, const char *fmt,
809 va_list args);
810char *tomoyo_read_token(struct tomoyo_acl_param *param);
811char *tomoyo_realpath_from_path(struct path *path);
812char *tomoyo_realpath_nofollow(const char *pathname);
813const char *tomoyo_get_exe(void);
814const char *tomoyo_yesno(const unsigned int value);
815const struct tomoyo_path_info *tomoyo_compare_name_union
816(const struct tomoyo_path_info *name, const struct tomoyo_name_union *ptr);
817const struct tomoyo_path_info *tomoyo_get_name(const char *name);
818const struct tomoyo_path_info *tomoyo_path_matches_group
819(const struct tomoyo_path_info *pathname, const struct tomoyo_group *group);
820int tomoyo_check_open_permission(struct tomoyo_domain_info *domain,
821 struct path *path, const int flag);
822int tomoyo_close_control(struct tomoyo_io_buffer *head);
823int tomoyo_find_next_domain(struct linux_binprm *bprm);
824int tomoyo_get_mode(const struct tomoyo_policy_namespace *ns, const u8 profile,
825 const u8 index);
Tetsuo Handa2106ccd2010-05-17 10:10:31 +0900826int tomoyo_init_request_info(struct tomoyo_request_info *r,
Tetsuo Handa57c25902010-06-03 20:38:44 +0900827 struct tomoyo_domain_info *domain,
828 const u8 index);
Tetsuo Handa3ddf17f2011-06-29 14:22:37 +0900829int tomoyo_mkdev_perm(const u8 operation, struct path *path,
830 const unsigned int mode, unsigned int dev);
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900831int tomoyo_mount_permission(char *dev_name, struct path *path,
832 const char *type, unsigned long flags,
833 void *data_page);
Tetsuo Handa3ddf17f2011-06-29 14:22:37 +0900834int tomoyo_open_control(const u8 type, struct file *file);
Tetsuo Handa97d69312010-02-16 09:46:15 +0900835int tomoyo_path2_perm(const u8 operation, struct path *path1,
836 struct path *path2);
Tetsuo Handa3ddf17f2011-06-29 14:22:37 +0900837int tomoyo_path_number_perm(const u8 operation, struct path *path,
838 unsigned long number);
Tetsuo Handa97fb35e2011-07-08 13:25:53 +0900839int tomoyo_path_perm(const u8 operation, struct path *path,
840 const char *target);
Tetsuo Handa3ddf17f2011-06-29 14:22:37 +0900841int tomoyo_path_permission(struct tomoyo_request_info *r, u8 operation,
842 const struct tomoyo_path_info *filename);
843int tomoyo_poll_control(struct file *file, poll_table *wait);
844int tomoyo_poll_log(struct file *file, poll_table *wait);
845int tomoyo_supervisor(struct tomoyo_request_info *r, const char *fmt, ...)
846 __printf(2, 3);
Tetsuo Handa237ab452010-06-12 20:46:22 +0900847int tomoyo_update_domain(struct tomoyo_acl_info *new_entry, const int size,
Tetsuo Handaa238cf52011-06-26 23:17:10 +0900848 struct tomoyo_acl_param *param,
Tetsuo Handa3ddf17f2011-06-29 14:22:37 +0900849 bool (*check_duplicate)
850 (const struct tomoyo_acl_info *,
851 const struct tomoyo_acl_info *),
852 bool (*merge_duplicate)
853 (struct tomoyo_acl_info *, struct tomoyo_acl_info *,
854 const bool));
Tetsuo Handa36f5e1f2010-06-15 09:23:26 +0900855int tomoyo_update_policy(struct tomoyo_acl_head *new_entry, const int size,
Tetsuo Handaa238cf52011-06-26 23:17:10 +0900856 struct tomoyo_acl_param *param,
Tetsuo Handa3ddf17f2011-06-29 14:22:37 +0900857 bool (*check_duplicate)
858 (const struct tomoyo_acl_head *,
859 const struct tomoyo_acl_head *));
860int tomoyo_write_aggregator(struct tomoyo_acl_param *param);
861int tomoyo_write_file(struct tomoyo_acl_param *param);
862int tomoyo_write_group(struct tomoyo_acl_param *param, const u8 type);
863int tomoyo_write_transition_control(struct tomoyo_acl_param *param,
864 const u8 type);
865ssize_t tomoyo_read_control(struct tomoyo_io_buffer *head, char __user *buffer,
866 const int buffer_len);
867ssize_t tomoyo_write_control(struct tomoyo_io_buffer *head,
868 const char __user *buffer, const int buffer_len);
Tetsuo Handa2066a362011-07-08 13:21:37 +0900869struct tomoyo_condition *tomoyo_get_condition(struct tomoyo_acl_param *param);
Tetsuo Handa3ddf17f2011-06-29 14:22:37 +0900870struct tomoyo_domain_info *tomoyo_assign_domain(const char *domainname,
871 const bool transit);
872struct tomoyo_domain_info *tomoyo_find_domain(const char *domainname);
873struct tomoyo_group *tomoyo_get_group(struct tomoyo_acl_param *param,
874 const u8 idx);
875struct tomoyo_policy_namespace *tomoyo_assign_namespace
876(const char *domainname);
877struct tomoyo_profile *tomoyo_profile(const struct tomoyo_policy_namespace *ns,
878 const u8 profile);
879unsigned int tomoyo_check_flags(const struct tomoyo_domain_info *domain,
880 const u8 index);
Tetsuo Handa2066a362011-07-08 13:21:37 +0900881u8 tomoyo_parse_ulong(unsigned long *result, char **str);
Tetsuo Handa3ddf17f2011-06-29 14:22:37 +0900882void *tomoyo_commit_ok(void *data, const unsigned int size);
883void __init tomoyo_load_builtin_policy(void);
884void __init tomoyo_mm_init(void);
Tetsuo Handa99a85252010-06-16 16:22:51 +0900885void tomoyo_check_acl(struct tomoyo_request_info *r,
Tetsuo Handa484ca792010-07-29 14:29:55 +0900886 bool (*check_entry) (struct tomoyo_request_info *,
Tetsuo Handa99a85252010-06-16 16:22:51 +0900887 const struct tomoyo_acl_info *));
Tetsuo Handa3ddf17f2011-06-29 14:22:37 +0900888void tomoyo_check_profile(void);
889void tomoyo_convert_time(time_t time, struct tomoyo_time *stamp);
Tetsuo Handa2066a362011-07-08 13:21:37 +0900890void tomoyo_del_condition(struct list_head *element);
Tetsuo Handa3ddf17f2011-06-29 14:22:37 +0900891void tomoyo_fill_path_info(struct tomoyo_path_info *ptr);
Tetsuo Handa8761afd2011-07-08 13:22:41 +0900892void tomoyo_get_attributes(struct tomoyo_obj_info *obj);
Tetsuo Handa3ddf17f2011-06-29 14:22:37 +0900893void tomoyo_init_policy_namespace(struct tomoyo_policy_namespace *ns);
894void tomoyo_io_printf(struct tomoyo_io_buffer *head, const char *fmt, ...)
895 __printf(2, 3);
896void tomoyo_load_policy(const char *filename);
897void tomoyo_memory_free(void *ptr);
898void tomoyo_normalize_line(unsigned char *buffer);
899void tomoyo_notify_gc(struct tomoyo_io_buffer *head, const bool is_register);
900void tomoyo_print_ulong(char *buffer, const int buffer_len,
901 const unsigned long value, const u8 type);
902void tomoyo_put_name_union(struct tomoyo_name_union *ptr);
903void tomoyo_put_number_union(struct tomoyo_number_union *ptr);
904void tomoyo_read_log(struct tomoyo_io_buffer *head);
905void tomoyo_update_stat(const u8 index);
906void tomoyo_warn_oom(const char *function);
Tetsuo Handabd03a3e2011-06-26 23:19:52 +0900907void tomoyo_write_log(struct tomoyo_request_info *r, const char *fmt, ...)
Tetsuo Handa3ddf17f2011-06-29 14:22:37 +0900908 __printf(2, 3);
Tetsuo Handaeadd99c2011-06-26 23:18:58 +0900909void tomoyo_write_log2(struct tomoyo_request_info *r, int len, const char *fmt,
910 va_list args);
Tetsuo Handaeadd99c2011-06-26 23:18:58 +0900911
Tetsuo Handa76bb0892010-02-11 09:42:40 +0900912/********** External variable definitions. **********/
913
Tetsuo Handa76bb0892010-02-11 09:42:40 +0900914extern bool tomoyo_policy_loaded;
Tetsuo Handa2066a362011-07-08 13:21:37 +0900915extern const char * const tomoyo_condition_keyword
916[TOMOYO_MAX_CONDITION_KEYWORD];
Tetsuo Handa3ddf17f2011-06-29 14:22:37 +0900917extern const char * const tomoyo_dif[TOMOYO_MAX_DOMAIN_INFO_FLAGS];
918extern const char * const tomoyo_mac_keywords[TOMOYO_MAX_MAC_INDEX
919 + TOMOYO_MAX_MAC_CATEGORY_INDEX];
920extern const char * const tomoyo_mode[TOMOYO_CONFIG_MAX_MODE];
Tetsuo Handa2c47ab92011-06-26 23:21:19 +0900921extern const char * const tomoyo_path_keyword[TOMOYO_MAX_PATH_OPERATION];
922extern const u8 tomoyo_index2category[TOMOYO_MAX_MAC_INDEX];
Tetsuo Handa3ddf17f2011-06-29 14:22:37 +0900923extern const u8 tomoyo_pn2mac[TOMOYO_MAX_PATH_NUMBER_OPERATION];
Tetsuo Handa0d2171d2011-06-26 23:17:46 +0900924extern const u8 tomoyo_pnnn2mac[TOMOYO_MAX_MKDEV_OPERATION];
925extern const u8 tomoyo_pp2mac[TOMOYO_MAX_PATH2_OPERATION];
Tetsuo Handa2066a362011-07-08 13:21:37 +0900926extern struct list_head tomoyo_condition_list;
Tetsuo Handa3ddf17f2011-06-29 14:22:37 +0900927extern struct list_head tomoyo_domain_list;
928extern struct list_head tomoyo_name_list[TOMOYO_MAX_HASH];
929extern struct list_head tomoyo_namespace_list;
930extern struct mutex tomoyo_policy_lock;
931extern struct srcu_struct tomoyo_ss;
932extern struct tomoyo_domain_info tomoyo_kernel_domain;
933extern struct tomoyo_policy_namespace tomoyo_kernel_namespace;
Tetsuo Handaeadd99c2011-06-26 23:18:58 +0900934extern unsigned int tomoyo_memory_quota[TOMOYO_MAX_MEMORY_STAT];
935extern unsigned int tomoyo_memory_used[TOMOYO_MAX_MEMORY_STAT];
Tetsuo Handa17fcfbd2010-05-17 10:11:36 +0900936
Tetsuo Handa76bb0892010-02-11 09:42:40 +0900937/********** Inlined functions. **********/
938
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900939/**
940 * tomoyo_read_lock - Take lock for protecting policy.
941 *
942 * Returns index number for tomoyo_read_unlock().
943 */
Tetsuo Handa76bb0892010-02-11 09:42:40 +0900944static inline int tomoyo_read_lock(void)
945{
946 return srcu_read_lock(&tomoyo_ss);
947}
948
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900949/**
950 * tomoyo_read_unlock - Release lock for protecting policy.
951 *
952 * @idx: Index number returned by tomoyo_read_lock().
953 *
954 * Returns nothing.
955 */
Tetsuo Handa76bb0892010-02-11 09:42:40 +0900956static inline void tomoyo_read_unlock(int idx)
957{
958 srcu_read_unlock(&tomoyo_ss, idx);
959}
960
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900961/**
Tetsuo Handa2066a362011-07-08 13:21:37 +0900962 * tomoyo_sys_getppid - Copy of getppid().
963 *
964 * Returns parent process's PID.
965 *
966 * Alpha does not have getppid() defined. To be able to build this module on
967 * Alpha, I have to copy getppid() from kernel/timer.c.
968 */
969static inline pid_t tomoyo_sys_getppid(void)
970{
971 pid_t pid;
972 rcu_read_lock();
973 pid = task_tgid_vnr(current->real_parent);
974 rcu_read_unlock();
975 return pid;
976}
977
978/**
979 * tomoyo_sys_getpid - Copy of getpid().
980 *
981 * Returns current thread's PID.
982 *
983 * Alpha does not have getpid() defined. To be able to build this module on
984 * Alpha, I have to copy getpid() from kernel/timer.c.
985 */
986static inline pid_t tomoyo_sys_getpid(void)
987{
988 return task_tgid_vnr(current);
989}
990
991/**
Tetsuo Handab5bc60b2011-06-26 23:16:03 +0900992 * tomoyo_pathcmp - strcmp() for "struct tomoyo_path_info" structure.
993 *
994 * @a: Pointer to "struct tomoyo_path_info".
995 * @b: Pointer to "struct tomoyo_path_info".
996 *
997 * Returns true if @a == @b, false otherwise.
998 */
Kentaro Takeda95908372009-02-05 17:18:13 +0900999static inline bool tomoyo_pathcmp(const struct tomoyo_path_info *a,
1000 const struct tomoyo_path_info *b)
1001{
1002 return a->hash != b->hash || strcmp(a->name, b->name);
1003}
1004
Kentaro Takeda95908372009-02-05 17:18:13 +09001005/**
Tetsuo Handab5bc60b2011-06-26 23:16:03 +09001006 * tomoyo_put_name - Drop reference on "struct tomoyo_name".
1007 *
1008 * @name: Pointer to "struct tomoyo_path_info". Maybe NULL.
1009 *
1010 * Returns nothing.
1011 */
Tetsuo Handa76bb0892010-02-11 09:42:40 +09001012static inline void tomoyo_put_name(const struct tomoyo_path_info *name)
1013{
1014 if (name) {
Tetsuo Handae2bf6902010-06-25 11:16:00 +09001015 struct tomoyo_name *ptr =
1016 container_of(name, typeof(*ptr), entry);
Tetsuo Handa0df7e8b2011-06-26 23:16:36 +09001017 atomic_dec(&ptr->head.users);
Tetsuo Handa76bb0892010-02-11 09:42:40 +09001018 }
1019}
Kentaro Takeda95908372009-02-05 17:18:13 +09001020
Tetsuo Handab5bc60b2011-06-26 23:16:03 +09001021/**
Tetsuo Handa2066a362011-07-08 13:21:37 +09001022 * tomoyo_put_condition - Drop reference on "struct tomoyo_condition".
1023 *
1024 * @cond: Pointer to "struct tomoyo_condition". Maybe NULL.
1025 *
1026 * Returns nothing.
1027 */
1028static inline void tomoyo_put_condition(struct tomoyo_condition *cond)
1029{
1030 if (cond)
1031 atomic_dec(&cond->head.users);
1032}
1033
1034/**
Tetsuo Handab5bc60b2011-06-26 23:16:03 +09001035 * tomoyo_put_group - Drop reference on "struct tomoyo_group".
1036 *
1037 * @group: Pointer to "struct tomoyo_group". Maybe NULL.
1038 *
1039 * Returns nothing.
1040 */
Tetsuo Handaa98aa4d2010-06-17 16:52:29 +09001041static inline void tomoyo_put_group(struct tomoyo_group *group)
Tetsuo Handa4c3e9e22010-05-17 10:06:58 +09001042{
1043 if (group)
Tetsuo Handa0df7e8b2011-06-26 23:16:36 +09001044 atomic_dec(&group->head.users);
Tetsuo Handa4c3e9e22010-05-17 10:06:58 +09001045}
1046
Tetsuo Handab5bc60b2011-06-26 23:16:03 +09001047/**
1048 * tomoyo_domain - Get "struct tomoyo_domain_info" for current thread.
1049 *
1050 * Returns pointer to "struct tomoyo_domain_info" for current thread.
1051 */
Tetsuo Handa76bb0892010-02-11 09:42:40 +09001052static inline struct tomoyo_domain_info *tomoyo_domain(void)
1053{
1054 return current_cred()->security;
1055}
Kentaro Takeda95908372009-02-05 17:18:13 +09001056
Tetsuo Handab5bc60b2011-06-26 23:16:03 +09001057/**
1058 * tomoyo_real_domain - Get "struct tomoyo_domain_info" for specified thread.
1059 *
1060 * @task: Pointer to "struct task_struct".
1061 *
1062 * Returns pointer to "struct tomoyo_security" for specified thread.
1063 */
Tetsuo Handa76bb0892010-02-11 09:42:40 +09001064static inline struct tomoyo_domain_info *tomoyo_real_domain(struct task_struct
1065 *task)
1066{
1067 return task_cred_xxx(task, security);
1068}
Kentaro Takeda95908372009-02-05 17:18:13 +09001069
Tetsuo Handab5bc60b2011-06-26 23:16:03 +09001070/**
1071 * tomoyo_same_name_union - Check for duplicated "struct tomoyo_name_union" entry.
1072 *
1073 * @a: Pointer to "struct tomoyo_name_union".
1074 * @b: Pointer to "struct tomoyo_name_union".
1075 *
1076 * Returns true if @a == @b, false otherwise.
1077 */
Tetsuo Handa75093152010-06-16 16:23:55 +09001078static inline bool tomoyo_same_name_union
Tetsuo Handab5bc60b2011-06-26 23:16:03 +09001079(const struct tomoyo_name_union *a, const struct tomoyo_name_union *b)
Tetsuo Handa7762fbf2010-05-10 17:30:26 +09001080{
Tetsuo Handa0df7e8b2011-06-26 23:16:36 +09001081 return a->filename == b->filename && a->group == b->group;
Tetsuo Handa7762fbf2010-05-10 17:30:26 +09001082}
1083
Tetsuo Handab5bc60b2011-06-26 23:16:03 +09001084/**
1085 * tomoyo_same_number_union - Check for duplicated "struct tomoyo_number_union" entry.
1086 *
1087 * @a: Pointer to "struct tomoyo_number_union".
1088 * @b: Pointer to "struct tomoyo_number_union".
1089 *
1090 * Returns true if @a == @b, false otherwise.
1091 */
Tetsuo Handa75093152010-06-16 16:23:55 +09001092static inline bool tomoyo_same_number_union
Tetsuo Handab5bc60b2011-06-26 23:16:03 +09001093(const struct tomoyo_number_union *a, const struct tomoyo_number_union *b)
Tetsuo Handa4c3e9e22010-05-17 10:06:58 +09001094{
Tetsuo Handab5bc60b2011-06-26 23:16:03 +09001095 return a->values[0] == b->values[0] && a->values[1] == b->values[1] &&
Tetsuo Handa0df7e8b2011-06-26 23:16:36 +09001096 a->group == b->group && a->value_type[0] == b->value_type[0] &&
1097 a->value_type[1] == b->value_type[1];
Tetsuo Handa4c3e9e22010-05-17 10:06:58 +09001098}
1099
Tetsuo Handabd03a3e2011-06-26 23:19:52 +09001100/**
1101 * tomoyo_current_namespace - Get "struct tomoyo_policy_namespace" for current thread.
1102 *
1103 * Returns pointer to "struct tomoyo_policy_namespace" for current thread.
1104 */
1105static inline struct tomoyo_policy_namespace *tomoyo_current_namespace(void)
1106{
1107 return tomoyo_domain()->ns;
1108}
1109
Tetsuo Handaeadd99c2011-06-26 23:18:58 +09001110#if defined(CONFIG_SLOB)
1111
1112/**
1113 * tomoyo_round2 - Round up to power of 2 for calculating memory usage.
1114 *
1115 * @size: Size to be rounded up.
1116 *
1117 * Returns @size.
1118 *
1119 * Since SLOB does not round up, this function simply returns @size.
1120 */
1121static inline int tomoyo_round2(size_t size)
1122{
1123 return size;
1124}
1125
1126#else
1127
1128/**
1129 * tomoyo_round2 - Round up to power of 2 for calculating memory usage.
1130 *
1131 * @size: Size to be rounded up.
1132 *
1133 * Returns rounded size.
1134 *
1135 * Strictly speaking, SLAB may be able to allocate (e.g.) 96 bytes instead of
1136 * (e.g.) 128 bytes.
1137 */
1138static inline int tomoyo_round2(size_t size)
1139{
1140#if PAGE_SIZE == 4096
1141 size_t bsize = 32;
1142#else
1143 size_t bsize = 64;
1144#endif
1145 if (!size)
1146 return 0;
1147 while (size > bsize)
1148 bsize <<= 1;
1149 return bsize;
1150}
1151
1152#endif
1153
Kentaro Takeda95908372009-02-05 17:18:13 +09001154/**
1155 * list_for_each_cookie - iterate over a list with cookie.
1156 * @pos: the &struct list_head to use as a loop cursor.
Kentaro Takeda95908372009-02-05 17:18:13 +09001157 * @head: the head for your list.
Kentaro Takeda95908372009-02-05 17:18:13 +09001158 */
Tetsuo Handa475e6fa2010-06-24 11:28:14 +09001159#define list_for_each_cookie(pos, head) \
1160 if (!pos) \
1161 pos = srcu_dereference((head)->next, &tomoyo_ss); \
1162 for ( ; pos != (head); pos = srcu_dereference(pos->next, &tomoyo_ss))
Tetsuo Handafdb8ebb2009-12-08 09:34:43 +09001163
Kentaro Takeda95908372009-02-05 17:18:13 +09001164#endif /* !defined(_SECURITY_TOMOYO_COMMON_H) */