1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * security/tomoyo/tomoyo.c |
4 | * |
5 | * Copyright (C) 2005-2011 NTT DATA CORPORATION |
6 | */ |
7 | |
8 | #include <linux/lsm_hooks.h> |
9 | #include "common.h" |
10 | |
11 | /** |
12 | * tomoyo_domain - Get "struct tomoyo_domain_info" for current thread. |
13 | * |
14 | * Returns pointer to "struct tomoyo_domain_info" for current thread. |
15 | */ |
16 | struct tomoyo_domain_info *tomoyo_domain(void) |
17 | { |
18 | struct tomoyo_task *s = tomoyo_task(current); |
19 | |
20 | if (s->old_domain_info && !current->in_execve) { |
21 | atomic_dec(v: &s->old_domain_info->users); |
22 | s->old_domain_info = NULL; |
23 | } |
24 | return s->domain_info; |
25 | } |
26 | |
27 | /** |
28 | * tomoyo_cred_prepare - Target for security_prepare_creds(). |
29 | * |
30 | * @new: Pointer to "struct cred". |
31 | * @old: Pointer to "struct cred". |
32 | * @gfp: Memory allocation flags. |
33 | * |
34 | * Returns 0. |
35 | */ |
36 | static int tomoyo_cred_prepare(struct cred *new, const struct cred *old, |
37 | gfp_t gfp) |
38 | { |
39 | /* Restore old_domain_info saved by previous execve() request. */ |
40 | struct tomoyo_task *s = tomoyo_task(current); |
41 | |
42 | if (s->old_domain_info && !current->in_execve) { |
43 | atomic_dec(v: &s->domain_info->users); |
44 | s->domain_info = s->old_domain_info; |
45 | s->old_domain_info = NULL; |
46 | } |
47 | return 0; |
48 | } |
49 | |
50 | /** |
51 | * tomoyo_bprm_committed_creds - Target for security_bprm_committed_creds(). |
52 | * |
53 | * @bprm: Pointer to "struct linux_binprm". |
54 | */ |
55 | static void tomoyo_bprm_committed_creds(const struct linux_binprm *bprm) |
56 | { |
57 | /* Clear old_domain_info saved by execve() request. */ |
58 | struct tomoyo_task *s = tomoyo_task(current); |
59 | |
60 | atomic_dec(v: &s->old_domain_info->users); |
61 | s->old_domain_info = NULL; |
62 | } |
63 | |
64 | #ifndef CONFIG_SECURITY_TOMOYO_OMIT_USERSPACE_LOADER |
65 | /** |
66 | * tomoyo_bprm_creds_for_exec - Target for security_bprm_creds_for_exec(). |
67 | * |
68 | * @bprm: Pointer to "struct linux_binprm". |
69 | * |
70 | * Returns 0. |
71 | */ |
72 | static int tomoyo_bprm_creds_for_exec(struct linux_binprm *bprm) |
73 | { |
74 | /* |
75 | * Load policy if /sbin/tomoyo-init exists and /sbin/init is requested |
76 | * for the first time. |
77 | */ |
78 | if (!tomoyo_policy_loaded) |
79 | tomoyo_load_policy(bprm->filename); |
80 | return 0; |
81 | } |
82 | #endif |
83 | |
84 | /** |
85 | * tomoyo_bprm_check_security - Target for security_bprm_check(). |
86 | * |
87 | * @bprm: Pointer to "struct linux_binprm". |
88 | * |
89 | * Returns 0 on success, negative value otherwise. |
90 | */ |
91 | static int tomoyo_bprm_check_security(struct linux_binprm *bprm) |
92 | { |
93 | struct tomoyo_task *s = tomoyo_task(current); |
94 | |
95 | /* |
96 | * Execute permission is checked against pathname passed to execve() |
97 | * using current domain. |
98 | */ |
99 | if (!s->old_domain_info) { |
100 | const int idx = tomoyo_read_lock(); |
101 | const int err = tomoyo_find_next_domain(bprm); |
102 | |
103 | tomoyo_read_unlock(idx); |
104 | return err; |
105 | } |
106 | /* |
107 | * Read permission is checked against interpreters using next domain. |
108 | */ |
109 | return tomoyo_check_open_permission(domain: s->domain_info, |
110 | path: &bprm->file->f_path, O_RDONLY); |
111 | } |
112 | |
113 | /** |
114 | * tomoyo_inode_getattr - Target for security_inode_getattr(). |
115 | * |
116 | * @path: Pointer to "struct path". |
117 | * |
118 | * Returns 0 on success, negative value otherwise. |
119 | */ |
120 | static int tomoyo_inode_getattr(const struct path *path) |
121 | { |
122 | return tomoyo_path_perm(operation: TOMOYO_TYPE_GETATTR, path, NULL); |
123 | } |
124 | |
125 | /** |
126 | * tomoyo_path_truncate - Target for security_path_truncate(). |
127 | * |
128 | * @path: Pointer to "struct path". |
129 | * |
130 | * Returns 0 on success, negative value otherwise. |
131 | */ |
132 | static int tomoyo_path_truncate(const struct path *path) |
133 | { |
134 | return tomoyo_path_perm(operation: TOMOYO_TYPE_TRUNCATE, path, NULL); |
135 | } |
136 | |
137 | /** |
138 | * tomoyo_file_truncate - Target for security_file_truncate(). |
139 | * |
140 | * @file: Pointer to "struct file". |
141 | * |
142 | * Returns 0 on success, negative value otherwise. |
143 | */ |
144 | static int tomoyo_file_truncate(struct file *file) |
145 | { |
146 | return tomoyo_path_truncate(path: &file->f_path); |
147 | } |
148 | |
149 | /** |
150 | * tomoyo_path_unlink - Target for security_path_unlink(). |
151 | * |
152 | * @parent: Pointer to "struct path". |
153 | * @dentry: Pointer to "struct dentry". |
154 | * |
155 | * Returns 0 on success, negative value otherwise. |
156 | */ |
157 | static int tomoyo_path_unlink(const struct path *parent, struct dentry *dentry) |
158 | { |
159 | struct path path = { .mnt = parent->mnt, .dentry = dentry }; |
160 | |
161 | return tomoyo_path_perm(operation: TOMOYO_TYPE_UNLINK, path: &path, NULL); |
162 | } |
163 | |
164 | /** |
165 | * tomoyo_path_mkdir - Target for security_path_mkdir(). |
166 | * |
167 | * @parent: Pointer to "struct path". |
168 | * @dentry: Pointer to "struct dentry". |
169 | * @mode: DAC permission mode. |
170 | * |
171 | * Returns 0 on success, negative value otherwise. |
172 | */ |
173 | static int tomoyo_path_mkdir(const struct path *parent, struct dentry *dentry, |
174 | umode_t mode) |
175 | { |
176 | struct path path = { .mnt = parent->mnt, .dentry = dentry }; |
177 | |
178 | return tomoyo_path_number_perm(operation: TOMOYO_TYPE_MKDIR, path: &path, |
179 | number: mode & S_IALLUGO); |
180 | } |
181 | |
182 | /** |
183 | * tomoyo_path_rmdir - Target for security_path_rmdir(). |
184 | * |
185 | * @parent: Pointer to "struct path". |
186 | * @dentry: Pointer to "struct dentry". |
187 | * |
188 | * Returns 0 on success, negative value otherwise. |
189 | */ |
190 | static int tomoyo_path_rmdir(const struct path *parent, struct dentry *dentry) |
191 | { |
192 | struct path path = { .mnt = parent->mnt, .dentry = dentry }; |
193 | |
194 | return tomoyo_path_perm(operation: TOMOYO_TYPE_RMDIR, path: &path, NULL); |
195 | } |
196 | |
197 | /** |
198 | * tomoyo_path_symlink - Target for security_path_symlink(). |
199 | * |
200 | * @parent: Pointer to "struct path". |
201 | * @dentry: Pointer to "struct dentry". |
202 | * @old_name: Symlink's content. |
203 | * |
204 | * Returns 0 on success, negative value otherwise. |
205 | */ |
206 | static int tomoyo_path_symlink(const struct path *parent, struct dentry *dentry, |
207 | const char *old_name) |
208 | { |
209 | struct path path = { .mnt = parent->mnt, .dentry = dentry }; |
210 | |
211 | return tomoyo_path_perm(operation: TOMOYO_TYPE_SYMLINK, path: &path, target: old_name); |
212 | } |
213 | |
214 | /** |
215 | * tomoyo_path_mknod - Target for security_path_mknod(). |
216 | * |
217 | * @parent: Pointer to "struct path". |
218 | * @dentry: Pointer to "struct dentry". |
219 | * @mode: DAC permission mode. |
220 | * @dev: Device attributes. |
221 | * |
222 | * Returns 0 on success, negative value otherwise. |
223 | */ |
224 | static int tomoyo_path_mknod(const struct path *parent, struct dentry *dentry, |
225 | umode_t mode, unsigned int dev) |
226 | { |
227 | struct path path = { .mnt = parent->mnt, .dentry = dentry }; |
228 | int type = TOMOYO_TYPE_CREATE; |
229 | const unsigned int perm = mode & S_IALLUGO; |
230 | |
231 | switch (mode & S_IFMT) { |
232 | case S_IFCHR: |
233 | type = TOMOYO_TYPE_MKCHAR; |
234 | break; |
235 | case S_IFBLK: |
236 | type = TOMOYO_TYPE_MKBLOCK; |
237 | break; |
238 | default: |
239 | goto no_dev; |
240 | } |
241 | return tomoyo_mkdev_perm(operation: type, path: &path, mode: perm, dev); |
242 | no_dev: |
243 | switch (mode & S_IFMT) { |
244 | case S_IFIFO: |
245 | type = TOMOYO_TYPE_MKFIFO; |
246 | break; |
247 | case S_IFSOCK: |
248 | type = TOMOYO_TYPE_MKSOCK; |
249 | break; |
250 | } |
251 | return tomoyo_path_number_perm(operation: type, path: &path, number: perm); |
252 | } |
253 | |
254 | /** |
255 | * tomoyo_path_link - Target for security_path_link(). |
256 | * |
257 | * @old_dentry: Pointer to "struct dentry". |
258 | * @new_dir: Pointer to "struct path". |
259 | * @new_dentry: Pointer to "struct dentry". |
260 | * |
261 | * Returns 0 on success, negative value otherwise. |
262 | */ |
263 | static int tomoyo_path_link(struct dentry *old_dentry, const struct path *new_dir, |
264 | struct dentry *new_dentry) |
265 | { |
266 | struct path path1 = { .mnt = new_dir->mnt, .dentry = old_dentry }; |
267 | struct path path2 = { .mnt = new_dir->mnt, .dentry = new_dentry }; |
268 | |
269 | return tomoyo_path2_perm(operation: TOMOYO_TYPE_LINK, path1: &path1, path2: &path2); |
270 | } |
271 | |
272 | /** |
273 | * tomoyo_path_rename - Target for security_path_rename(). |
274 | * |
275 | * @old_parent: Pointer to "struct path". |
276 | * @old_dentry: Pointer to "struct dentry". |
277 | * @new_parent: Pointer to "struct path". |
278 | * @new_dentry: Pointer to "struct dentry". |
279 | * @flags: Rename options. |
280 | * |
281 | * Returns 0 on success, negative value otherwise. |
282 | */ |
283 | static int tomoyo_path_rename(const struct path *old_parent, |
284 | struct dentry *old_dentry, |
285 | const struct path *new_parent, |
286 | struct dentry *new_dentry, |
287 | const unsigned int flags) |
288 | { |
289 | struct path path1 = { .mnt = old_parent->mnt, .dentry = old_dentry }; |
290 | struct path path2 = { .mnt = new_parent->mnt, .dentry = new_dentry }; |
291 | |
292 | if (flags & RENAME_EXCHANGE) { |
293 | const int err = tomoyo_path2_perm(operation: TOMOYO_TYPE_RENAME, path1: &path2, |
294 | path2: &path1); |
295 | |
296 | if (err) |
297 | return err; |
298 | } |
299 | return tomoyo_path2_perm(operation: TOMOYO_TYPE_RENAME, path1: &path1, path2: &path2); |
300 | } |
301 | |
302 | /** |
303 | * tomoyo_file_fcntl - Target for security_file_fcntl(). |
304 | * |
305 | * @file: Pointer to "struct file". |
306 | * @cmd: Command for fcntl(). |
307 | * @arg: Argument for @cmd. |
308 | * |
309 | * Returns 0 on success, negative value otherwise. |
310 | */ |
311 | static int tomoyo_file_fcntl(struct file *file, unsigned int cmd, |
312 | unsigned long arg) |
313 | { |
314 | if (!(cmd == F_SETFL && ((arg ^ file->f_flags) & O_APPEND))) |
315 | return 0; |
316 | return tomoyo_check_open_permission(domain: tomoyo_domain(), path: &file->f_path, |
317 | O_WRONLY | (arg & O_APPEND)); |
318 | } |
319 | |
320 | /** |
321 | * tomoyo_file_open - Target for security_file_open(). |
322 | * |
323 | * @f: Pointer to "struct file". |
324 | * |
325 | * Returns 0 on success, negative value otherwise. |
326 | */ |
327 | static int tomoyo_file_open(struct file *f) |
328 | { |
329 | /* Don't check read permission here if called from execve(). */ |
330 | if (current->in_execve) |
331 | return 0; |
332 | return tomoyo_check_open_permission(domain: tomoyo_domain(), path: &f->f_path, |
333 | flag: f->f_flags); |
334 | } |
335 | |
336 | /** |
337 | * tomoyo_file_ioctl - Target for security_file_ioctl(). |
338 | * |
339 | * @file: Pointer to "struct file". |
340 | * @cmd: Command for ioctl(). |
341 | * @arg: Argument for @cmd. |
342 | * |
343 | * Returns 0 on success, negative value otherwise. |
344 | */ |
345 | static int tomoyo_file_ioctl(struct file *file, unsigned int cmd, |
346 | unsigned long arg) |
347 | { |
348 | return tomoyo_path_number_perm(operation: TOMOYO_TYPE_IOCTL, path: &file->f_path, number: cmd); |
349 | } |
350 | |
351 | /** |
352 | * tomoyo_path_chmod - Target for security_path_chmod(). |
353 | * |
354 | * @path: Pointer to "struct path". |
355 | * @mode: DAC permission mode. |
356 | * |
357 | * Returns 0 on success, negative value otherwise. |
358 | */ |
359 | static int tomoyo_path_chmod(const struct path *path, umode_t mode) |
360 | { |
361 | return tomoyo_path_number_perm(operation: TOMOYO_TYPE_CHMOD, path, |
362 | number: mode & S_IALLUGO); |
363 | } |
364 | |
365 | /** |
366 | * tomoyo_path_chown - Target for security_path_chown(). |
367 | * |
368 | * @path: Pointer to "struct path". |
369 | * @uid: Owner ID. |
370 | * @gid: Group ID. |
371 | * |
372 | * Returns 0 on success, negative value otherwise. |
373 | */ |
374 | static int tomoyo_path_chown(const struct path *path, kuid_t uid, kgid_t gid) |
375 | { |
376 | int error = 0; |
377 | |
378 | if (uid_valid(uid)) |
379 | error = tomoyo_path_number_perm(operation: TOMOYO_TYPE_CHOWN, path, |
380 | number: from_kuid(to: &init_user_ns, uid)); |
381 | if (!error && gid_valid(gid)) |
382 | error = tomoyo_path_number_perm(operation: TOMOYO_TYPE_CHGRP, path, |
383 | number: from_kgid(to: &init_user_ns, gid)); |
384 | return error; |
385 | } |
386 | |
387 | /** |
388 | * tomoyo_path_chroot - Target for security_path_chroot(). |
389 | * |
390 | * @path: Pointer to "struct path". |
391 | * |
392 | * Returns 0 on success, negative value otherwise. |
393 | */ |
394 | static int tomoyo_path_chroot(const struct path *path) |
395 | { |
396 | return tomoyo_path_perm(operation: TOMOYO_TYPE_CHROOT, path, NULL); |
397 | } |
398 | |
399 | /** |
400 | * tomoyo_sb_mount - Target for security_sb_mount(). |
401 | * |
402 | * @dev_name: Name of device file. Maybe NULL. |
403 | * @path: Pointer to "struct path". |
404 | * @type: Name of filesystem type. Maybe NULL. |
405 | * @flags: Mount options. |
406 | * @data: Optional data. Maybe NULL. |
407 | * |
408 | * Returns 0 on success, negative value otherwise. |
409 | */ |
410 | static int tomoyo_sb_mount(const char *dev_name, const struct path *path, |
411 | const char *type, unsigned long flags, void *data) |
412 | { |
413 | return tomoyo_mount_permission(dev_name, path, type, flags, data_page: data); |
414 | } |
415 | |
416 | /** |
417 | * tomoyo_sb_umount - Target for security_sb_umount(). |
418 | * |
419 | * @mnt: Pointer to "struct vfsmount". |
420 | * @flags: Unmount options. |
421 | * |
422 | * Returns 0 on success, negative value otherwise. |
423 | */ |
424 | static int tomoyo_sb_umount(struct vfsmount *mnt, int flags) |
425 | { |
426 | struct path path = { .mnt = mnt, .dentry = mnt->mnt_root }; |
427 | |
428 | return tomoyo_path_perm(operation: TOMOYO_TYPE_UMOUNT, path: &path, NULL); |
429 | } |
430 | |
431 | /** |
432 | * tomoyo_sb_pivotroot - Target for security_sb_pivotroot(). |
433 | * |
434 | * @old_path: Pointer to "struct path". |
435 | * @new_path: Pointer to "struct path". |
436 | * |
437 | * Returns 0 on success, negative value otherwise. |
438 | */ |
439 | static int tomoyo_sb_pivotroot(const struct path *old_path, const struct path *new_path) |
440 | { |
441 | return tomoyo_path2_perm(operation: TOMOYO_TYPE_PIVOT_ROOT, path1: new_path, path2: old_path); |
442 | } |
443 | |
444 | /** |
445 | * tomoyo_socket_listen - Check permission for listen(). |
446 | * |
447 | * @sock: Pointer to "struct socket". |
448 | * @backlog: Backlog parameter. |
449 | * |
450 | * Returns 0 on success, negative value otherwise. |
451 | */ |
452 | static int tomoyo_socket_listen(struct socket *sock, int backlog) |
453 | { |
454 | return tomoyo_socket_listen_permission(sock); |
455 | } |
456 | |
457 | /** |
458 | * tomoyo_socket_connect - Check permission for connect(). |
459 | * |
460 | * @sock: Pointer to "struct socket". |
461 | * @addr: Pointer to "struct sockaddr". |
462 | * @addr_len: Size of @addr. |
463 | * |
464 | * Returns 0 on success, negative value otherwise. |
465 | */ |
466 | static int tomoyo_socket_connect(struct socket *sock, struct sockaddr *addr, |
467 | int addr_len) |
468 | { |
469 | return tomoyo_socket_connect_permission(sock, addr, addr_len); |
470 | } |
471 | |
472 | /** |
473 | * tomoyo_socket_bind - Check permission for bind(). |
474 | * |
475 | * @sock: Pointer to "struct socket". |
476 | * @addr: Pointer to "struct sockaddr". |
477 | * @addr_len: Size of @addr. |
478 | * |
479 | * Returns 0 on success, negative value otherwise. |
480 | */ |
481 | static int tomoyo_socket_bind(struct socket *sock, struct sockaddr *addr, |
482 | int addr_len) |
483 | { |
484 | return tomoyo_socket_bind_permission(sock, addr, addr_len); |
485 | } |
486 | |
487 | /** |
488 | * tomoyo_socket_sendmsg - Check permission for sendmsg(). |
489 | * |
490 | * @sock: Pointer to "struct socket". |
491 | * @msg: Pointer to "struct msghdr". |
492 | * @size: Size of message. |
493 | * |
494 | * Returns 0 on success, negative value otherwise. |
495 | */ |
496 | static int tomoyo_socket_sendmsg(struct socket *sock, struct msghdr *msg, |
497 | int size) |
498 | { |
499 | return tomoyo_socket_sendmsg_permission(sock, msg, size); |
500 | } |
501 | |
502 | struct lsm_blob_sizes tomoyo_blob_sizes __ro_after_init = { |
503 | .lbs_task = sizeof(struct tomoyo_task), |
504 | }; |
505 | |
506 | /** |
507 | * tomoyo_task_alloc - Target for security_task_alloc(). |
508 | * |
509 | * @task: Pointer to "struct task_struct". |
510 | * @clone_flags: clone() flags. |
511 | * |
512 | * Returns 0. |
513 | */ |
514 | static int tomoyo_task_alloc(struct task_struct *task, |
515 | unsigned long clone_flags) |
516 | { |
517 | struct tomoyo_task *old = tomoyo_task(current); |
518 | struct tomoyo_task *new = tomoyo_task(task); |
519 | |
520 | new->domain_info = old->domain_info; |
521 | atomic_inc(v: &new->domain_info->users); |
522 | new->old_domain_info = NULL; |
523 | return 0; |
524 | } |
525 | |
526 | /** |
527 | * tomoyo_task_free - Target for security_task_free(). |
528 | * |
529 | * @task: Pointer to "struct task_struct". |
530 | */ |
531 | static void tomoyo_task_free(struct task_struct *task) |
532 | { |
533 | struct tomoyo_task *s = tomoyo_task(task); |
534 | |
535 | if (s->domain_info) { |
536 | atomic_dec(v: &s->domain_info->users); |
537 | s->domain_info = NULL; |
538 | } |
539 | if (s->old_domain_info) { |
540 | atomic_dec(v: &s->old_domain_info->users); |
541 | s->old_domain_info = NULL; |
542 | } |
543 | } |
544 | |
545 | /* |
546 | * tomoyo_security_ops is a "struct security_operations" which is used for |
547 | * registering TOMOYO. |
548 | */ |
549 | static struct security_hook_list tomoyo_hooks[] __ro_after_init = { |
550 | LSM_HOOK_INIT(cred_prepare, tomoyo_cred_prepare), |
551 | LSM_HOOK_INIT(bprm_committed_creds, tomoyo_bprm_committed_creds), |
552 | LSM_HOOK_INIT(task_alloc, tomoyo_task_alloc), |
553 | LSM_HOOK_INIT(task_free, tomoyo_task_free), |
554 | #ifndef CONFIG_SECURITY_TOMOYO_OMIT_USERSPACE_LOADER |
555 | LSM_HOOK_INIT(bprm_creds_for_exec, tomoyo_bprm_creds_for_exec), |
556 | #endif |
557 | LSM_HOOK_INIT(bprm_check_security, tomoyo_bprm_check_security), |
558 | LSM_HOOK_INIT(file_fcntl, tomoyo_file_fcntl), |
559 | LSM_HOOK_INIT(file_open, tomoyo_file_open), |
560 | LSM_HOOK_INIT(file_truncate, tomoyo_file_truncate), |
561 | LSM_HOOK_INIT(path_truncate, tomoyo_path_truncate), |
562 | LSM_HOOK_INIT(path_unlink, tomoyo_path_unlink), |
563 | LSM_HOOK_INIT(path_mkdir, tomoyo_path_mkdir), |
564 | LSM_HOOK_INIT(path_rmdir, tomoyo_path_rmdir), |
565 | LSM_HOOK_INIT(path_symlink, tomoyo_path_symlink), |
566 | LSM_HOOK_INIT(path_mknod, tomoyo_path_mknod), |
567 | LSM_HOOK_INIT(path_link, tomoyo_path_link), |
568 | LSM_HOOK_INIT(path_rename, tomoyo_path_rename), |
569 | LSM_HOOK_INIT(inode_getattr, tomoyo_inode_getattr), |
570 | LSM_HOOK_INIT(file_ioctl, tomoyo_file_ioctl), |
571 | LSM_HOOK_INIT(path_chmod, tomoyo_path_chmod), |
572 | LSM_HOOK_INIT(path_chown, tomoyo_path_chown), |
573 | LSM_HOOK_INIT(path_chroot, tomoyo_path_chroot), |
574 | LSM_HOOK_INIT(sb_mount, tomoyo_sb_mount), |
575 | LSM_HOOK_INIT(sb_umount, tomoyo_sb_umount), |
576 | LSM_HOOK_INIT(sb_pivotroot, tomoyo_sb_pivotroot), |
577 | LSM_HOOK_INIT(socket_bind, tomoyo_socket_bind), |
578 | LSM_HOOK_INIT(socket_connect, tomoyo_socket_connect), |
579 | LSM_HOOK_INIT(socket_listen, tomoyo_socket_listen), |
580 | LSM_HOOK_INIT(socket_sendmsg, tomoyo_socket_sendmsg), |
581 | }; |
582 | |
583 | /* Lock for GC. */ |
584 | DEFINE_SRCU(tomoyo_ss); |
585 | |
586 | int tomoyo_enabled __ro_after_init = 1; |
587 | |
588 | /** |
589 | * tomoyo_init - Register TOMOYO Linux as a LSM module. |
590 | * |
591 | * Returns 0. |
592 | */ |
593 | static int __init tomoyo_init(void) |
594 | { |
595 | struct tomoyo_task *s = tomoyo_task(current); |
596 | |
597 | /* register ourselves with the security framework */ |
598 | security_add_hooks(hooks: tomoyo_hooks, ARRAY_SIZE(tomoyo_hooks), lsm: "tomoyo" ); |
599 | pr_info("TOMOYO Linux initialized\n" ); |
600 | s->domain_info = &tomoyo_kernel_domain; |
601 | atomic_inc(v: &tomoyo_kernel_domain.users); |
602 | s->old_domain_info = NULL; |
603 | tomoyo_mm_init(); |
604 | |
605 | return 0; |
606 | } |
607 | |
608 | DEFINE_LSM(tomoyo) = { |
609 | .name = "tomoyo" , |
610 | .enabled = &tomoyo_enabled, |
611 | .flags = LSM_FLAG_LEGACY_MAJOR, |
612 | .blobs = &tomoyo_blob_sizes, |
613 | .init = tomoyo_init, |
614 | }; |
615 | |