security.h 48 KB

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  1. /*
  2. * Linux Security plug
  3. *
  4. * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
  5. * Copyright (C) 2001 Greg Kroah-Hartman <greg@kroah.com>
  6. * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
  7. * Copyright (C) 2001 James Morris <jmorris@intercode.com.au>
  8. * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group)
  9. * Copyright (C) 2016 Mellanox Techonologies
  10. *
  11. * This program is free software; you can redistribute it and/or modify
  12. * it under the terms of the GNU General Public License as published by
  13. * the Free Software Foundation; either version 2 of the License, or
  14. * (at your option) any later version.
  15. *
  16. * Due to this file being licensed under the GPL there is controversy over
  17. * whether this permits you to write a module that #includes this file
  18. * without placing your module under the GPL. Please consult a lawyer for
  19. * advice before doing this.
  20. *
  21. */
  22. #ifndef __LINUX_SECURITY_H
  23. #define __LINUX_SECURITY_H
  24. #include <linux/key.h>
  25. #include <linux/capability.h>
  26. #include <linux/fs.h>
  27. #include <linux/slab.h>
  28. #include <linux/err.h>
  29. #include <linux/string.h>
  30. #include <linux/mm.h>
  31. #include <linux/fs.h>
  32. #include <linux/bpf.h>
  33. struct linux_binprm;
  34. struct cred;
  35. struct rlimit;
  36. struct siginfo;
  37. struct sem_array;
  38. struct sembuf;
  39. struct kern_ipc_perm;
  40. struct audit_context;
  41. struct super_block;
  42. struct inode;
  43. struct dentry;
  44. struct file;
  45. struct vfsmount;
  46. struct path;
  47. struct qstr;
  48. struct iattr;
  49. struct fown_struct;
  50. struct file_operations;
  51. struct shmid_kernel;
  52. struct msg_msg;
  53. struct msg_queue;
  54. struct xattr;
  55. struct xfrm_sec_ctx;
  56. struct mm_struct;
  57. /* If capable should audit the security request */
  58. #define SECURITY_CAP_NOAUDIT 0
  59. #define SECURITY_CAP_AUDIT 1
  60. /* LSM Agnostic defines for sb_set_mnt_opts */
  61. #define SECURITY_LSM_NATIVE_LABELS 1
  62. struct ctl_table;
  63. struct audit_krule;
  64. struct user_namespace;
  65. struct timezone;
  66. enum lsm_event {
  67. LSM_POLICY_CHANGE,
  68. };
  69. /* These functions are in security/commoncap.c */
  70. extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
  71. int cap, int audit);
  72. extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz);
  73. extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
  74. extern int cap_ptrace_traceme(struct task_struct *parent);
  75. extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
  76. extern int cap_capset(struct cred *new, const struct cred *old,
  77. const kernel_cap_t *effective,
  78. const kernel_cap_t *inheritable,
  79. const kernel_cap_t *permitted);
  80. extern int cap_bprm_set_creds(struct linux_binprm *bprm);
  81. extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
  82. const void *value, size_t size, int flags);
  83. extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
  84. extern int cap_inode_need_killpriv(struct dentry *dentry);
  85. extern int cap_inode_killpriv(struct dentry *dentry);
  86. extern int cap_inode_getsecurity(struct inode *inode, const char *name,
  87. void **buffer, bool alloc);
  88. extern int cap_mmap_addr(unsigned long addr);
  89. extern int cap_mmap_file(struct file *file, unsigned long reqprot,
  90. unsigned long prot, unsigned long flags);
  91. extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
  92. extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
  93. unsigned long arg4, unsigned long arg5);
  94. extern int cap_task_setscheduler(struct task_struct *p);
  95. extern int cap_task_setioprio(struct task_struct *p, int ioprio);
  96. extern int cap_task_setnice(struct task_struct *p, int nice);
  97. extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
  98. struct msghdr;
  99. struct sk_buff;
  100. struct sock;
  101. struct sockaddr;
  102. struct socket;
  103. struct flowi;
  104. struct dst_entry;
  105. struct xfrm_selector;
  106. struct xfrm_policy;
  107. struct xfrm_state;
  108. struct xfrm_user_sec_ctx;
  109. struct seq_file;
  110. #ifdef CONFIG_MMU
  111. extern unsigned long mmap_min_addr;
  112. extern unsigned long dac_mmap_min_addr;
  113. #else
  114. #define mmap_min_addr 0UL
  115. #define dac_mmap_min_addr 0UL
  116. #endif
  117. /*
  118. * Values used in the task_security_ops calls
  119. */
  120. /* setuid or setgid, id0 == uid or gid */
  121. #define LSM_SETID_ID 1
  122. /* setreuid or setregid, id0 == real, id1 == eff */
  123. #define LSM_SETID_RE 2
  124. /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
  125. #define LSM_SETID_RES 4
  126. /* setfsuid or setfsgid, id0 == fsuid or fsgid */
  127. #define LSM_SETID_FS 8
  128. /* Flags for security_task_prlimit(). */
  129. #define LSM_PRLIMIT_READ 1
  130. #define LSM_PRLIMIT_WRITE 2
  131. /* forward declares to avoid warnings */
  132. struct sched_param;
  133. struct request_sock;
  134. /* bprm->unsafe reasons */
  135. #define LSM_UNSAFE_SHARE 1
  136. #define LSM_UNSAFE_PTRACE 2
  137. #define LSM_UNSAFE_NO_NEW_PRIVS 4
  138. #ifdef CONFIG_MMU
  139. extern int mmap_min_addr_handler(struct ctl_table *table, int write,
  140. void __user *buffer, size_t *lenp, loff_t *ppos);
  141. #endif
  142. /* security_inode_init_security callback function to write xattrs */
  143. typedef int (*initxattrs) (struct inode *inode,
  144. const struct xattr *xattr_array, void *fs_data);
  145. #ifdef CONFIG_SECURITY
  146. struct security_mnt_opts {
  147. char **mnt_opts;
  148. int *mnt_opts_flags;
  149. int num_mnt_opts;
  150. };
  151. int call_lsm_notifier(enum lsm_event event, void *data);
  152. int register_lsm_notifier(struct notifier_block *nb);
  153. int unregister_lsm_notifier(struct notifier_block *nb);
  154. static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
  155. {
  156. opts->mnt_opts = NULL;
  157. opts->mnt_opts_flags = NULL;
  158. opts->num_mnt_opts = 0;
  159. }
  160. static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
  161. {
  162. int i;
  163. if (opts->mnt_opts)
  164. for (i = 0; i < opts->num_mnt_opts; i++)
  165. kfree(opts->mnt_opts[i]);
  166. kfree(opts->mnt_opts);
  167. opts->mnt_opts = NULL;
  168. kfree(opts->mnt_opts_flags);
  169. opts->mnt_opts_flags = NULL;
  170. opts->num_mnt_opts = 0;
  171. }
  172. /* prototypes */
  173. extern int security_init(void);
  174. /* Security operations */
  175. int security_binder_set_context_mgr(struct task_struct *mgr);
  176. int security_binder_transaction(struct task_struct *from,
  177. struct task_struct *to);
  178. int security_binder_transfer_binder(struct task_struct *from,
  179. struct task_struct *to);
  180. int security_binder_transfer_file(struct task_struct *from,
  181. struct task_struct *to, struct file *file);
  182. int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
  183. int security_ptrace_traceme(struct task_struct *parent);
  184. int security_capget(struct task_struct *target,
  185. kernel_cap_t *effective,
  186. kernel_cap_t *inheritable,
  187. kernel_cap_t *permitted);
  188. int security_capset(struct cred *new, const struct cred *old,
  189. const kernel_cap_t *effective,
  190. const kernel_cap_t *inheritable,
  191. const kernel_cap_t *permitted);
  192. int security_capable(const struct cred *cred, struct user_namespace *ns,
  193. int cap);
  194. int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
  195. int cap);
  196. int security_quotactl(int cmds, int type, int id, struct super_block *sb);
  197. int security_quota_on(struct dentry *dentry);
  198. int security_syslog(int type);
  199. int security_settime64(const struct timespec64 *ts, const struct timezone *tz);
  200. static inline int security_settime(const struct timespec *ts, const struct timezone *tz)
  201. {
  202. struct timespec64 ts64 = timespec_to_timespec64(*ts);
  203. return security_settime64(&ts64, tz);
  204. }
  205. int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
  206. int security_bprm_set_creds(struct linux_binprm *bprm);
  207. int security_bprm_check(struct linux_binprm *bprm);
  208. void security_bprm_committing_creds(struct linux_binprm *bprm);
  209. void security_bprm_committed_creds(struct linux_binprm *bprm);
  210. int security_sb_alloc(struct super_block *sb);
  211. void security_sb_free(struct super_block *sb);
  212. int security_sb_copy_data(char *orig, char *copy);
  213. int security_sb_remount(struct super_block *sb, void *data);
  214. int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
  215. int security_sb_show_options(struct seq_file *m, struct super_block *sb);
  216. int security_sb_statfs(struct dentry *dentry);
  217. int security_sb_mount(const char *dev_name, const struct path *path,
  218. const char *type, unsigned long flags, void *data);
  219. int security_sb_umount(struct vfsmount *mnt, int flags);
  220. int security_sb_pivotroot(const struct path *old_path, const struct path *new_path);
  221. int security_sb_set_mnt_opts(struct super_block *sb,
  222. struct security_mnt_opts *opts,
  223. unsigned long kern_flags,
  224. unsigned long *set_kern_flags);
  225. int security_sb_clone_mnt_opts(const struct super_block *oldsb,
  226. struct super_block *newsb,
  227. unsigned long kern_flags,
  228. unsigned long *set_kern_flags);
  229. int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
  230. int security_dentry_init_security(struct dentry *dentry, int mode,
  231. const struct qstr *name, void **ctx,
  232. u32 *ctxlen);
  233. int security_dentry_create_files_as(struct dentry *dentry, int mode,
  234. struct qstr *name,
  235. const struct cred *old,
  236. struct cred *new);
  237. int security_inode_alloc(struct inode *inode);
  238. void security_inode_free(struct inode *inode);
  239. int security_inode_init_security(struct inode *inode, struct inode *dir,
  240. const struct qstr *qstr,
  241. initxattrs initxattrs, void *fs_data);
  242. int security_old_inode_init_security(struct inode *inode, struct inode *dir,
  243. const struct qstr *qstr, const char **name,
  244. void **value, size_t *len);
  245. int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
  246. int security_inode_link(struct dentry *old_dentry, struct inode *dir,
  247. struct dentry *new_dentry);
  248. int security_inode_unlink(struct inode *dir, struct dentry *dentry);
  249. int security_inode_symlink(struct inode *dir, struct dentry *dentry,
  250. const char *old_name);
  251. int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
  252. int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
  253. int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
  254. int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
  255. struct inode *new_dir, struct dentry *new_dentry,
  256. unsigned int flags);
  257. int security_inode_readlink(struct dentry *dentry);
  258. int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
  259. bool rcu);
  260. int security_inode_permission(struct inode *inode, int mask);
  261. int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
  262. int security_inode_getattr(const struct path *path);
  263. int security_inode_setxattr(struct dentry *dentry, const char *name,
  264. const void *value, size_t size, int flags);
  265. void security_inode_post_setxattr(struct dentry *dentry, const char *name,
  266. const void *value, size_t size, int flags);
  267. int security_inode_getxattr(struct dentry *dentry, const char *name);
  268. int security_inode_listxattr(struct dentry *dentry);
  269. int security_inode_removexattr(struct dentry *dentry, const char *name);
  270. int security_inode_need_killpriv(struct dentry *dentry);
  271. int security_inode_killpriv(struct dentry *dentry);
  272. int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc);
  273. int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
  274. int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
  275. void security_inode_getsecid(struct inode *inode, u32 *secid);
  276. int security_inode_copy_up(struct dentry *src, struct cred **new);
  277. int security_inode_copy_up_xattr(const char *name);
  278. int security_file_permission(struct file *file, int mask);
  279. int security_file_alloc(struct file *file);
  280. void security_file_free(struct file *file);
  281. int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
  282. int security_mmap_file(struct file *file, unsigned long prot,
  283. unsigned long flags);
  284. int security_mmap_addr(unsigned long addr);
  285. int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
  286. unsigned long prot);
  287. int security_file_lock(struct file *file, unsigned int cmd);
  288. int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
  289. void security_file_set_fowner(struct file *file);
  290. int security_file_send_sigiotask(struct task_struct *tsk,
  291. struct fown_struct *fown, int sig);
  292. int security_file_receive(struct file *file);
  293. int security_file_open(struct file *file, const struct cred *cred);
  294. int security_task_alloc(struct task_struct *task, unsigned long clone_flags);
  295. void security_task_free(struct task_struct *task);
  296. int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
  297. void security_cred_free(struct cred *cred);
  298. int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
  299. void security_transfer_creds(struct cred *new, const struct cred *old);
  300. int security_kernel_act_as(struct cred *new, u32 secid);
  301. int security_kernel_create_files_as(struct cred *new, struct inode *inode);
  302. int security_kernel_module_request(char *kmod_name);
  303. int security_kernel_read_file(struct file *file, enum kernel_read_file_id id);
  304. int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
  305. enum kernel_read_file_id id);
  306. int security_task_fix_setuid(struct cred *new, const struct cred *old,
  307. int flags);
  308. int security_task_setpgid(struct task_struct *p, pid_t pgid);
  309. int security_task_getpgid(struct task_struct *p);
  310. int security_task_getsid(struct task_struct *p);
  311. void security_task_getsecid(struct task_struct *p, u32 *secid);
  312. int security_task_setnice(struct task_struct *p, int nice);
  313. int security_task_setioprio(struct task_struct *p, int ioprio);
  314. int security_task_getioprio(struct task_struct *p);
  315. int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
  316. unsigned int flags);
  317. int security_task_setrlimit(struct task_struct *p, unsigned int resource,
  318. struct rlimit *new_rlim);
  319. int security_task_setscheduler(struct task_struct *p);
  320. int security_task_getscheduler(struct task_struct *p);
  321. int security_task_movememory(struct task_struct *p);
  322. int security_task_kill(struct task_struct *p, struct siginfo *info,
  323. int sig, u32 secid);
  324. int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
  325. unsigned long arg4, unsigned long arg5);
  326. void security_task_to_inode(struct task_struct *p, struct inode *inode);
  327. int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
  328. void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
  329. int security_msg_msg_alloc(struct msg_msg *msg);
  330. void security_msg_msg_free(struct msg_msg *msg);
  331. int security_msg_queue_alloc(struct msg_queue *msq);
  332. void security_msg_queue_free(struct msg_queue *msq);
  333. int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
  334. int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
  335. int security_msg_queue_msgsnd(struct msg_queue *msq,
  336. struct msg_msg *msg, int msqflg);
  337. int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
  338. struct task_struct *target, long type, int mode);
  339. int security_shm_alloc(struct shmid_kernel *shp);
  340. void security_shm_free(struct shmid_kernel *shp);
  341. int security_shm_associate(struct shmid_kernel *shp, int shmflg);
  342. int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
  343. int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
  344. int security_sem_alloc(struct sem_array *sma);
  345. void security_sem_free(struct sem_array *sma);
  346. int security_sem_associate(struct sem_array *sma, int semflg);
  347. int security_sem_semctl(struct sem_array *sma, int cmd);
  348. int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
  349. unsigned nsops, int alter);
  350. void security_d_instantiate(struct dentry *dentry, struct inode *inode);
  351. int security_getprocattr(struct task_struct *p, char *name, char **value);
  352. int security_setprocattr(const char *name, void *value, size_t size);
  353. int security_netlink_send(struct sock *sk, struct sk_buff *skb);
  354. int security_ismaclabel(const char *name);
  355. int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
  356. int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
  357. void security_release_secctx(char *secdata, u32 seclen);
  358. void security_inode_invalidate_secctx(struct inode *inode);
  359. int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
  360. int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
  361. int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
  362. #else /* CONFIG_SECURITY */
  363. struct security_mnt_opts {
  364. };
  365. static inline int call_lsm_notifier(enum lsm_event event, void *data)
  366. {
  367. return 0;
  368. }
  369. static inline int register_lsm_notifier(struct notifier_block *nb)
  370. {
  371. return 0;
  372. }
  373. static inline int unregister_lsm_notifier(struct notifier_block *nb)
  374. {
  375. return 0;
  376. }
  377. static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
  378. {
  379. }
  380. static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
  381. {
  382. }
  383. /*
  384. * This is the default capabilities functionality. Most of these functions
  385. * are just stubbed out, but a few must call the proper capable code.
  386. */
  387. static inline int security_init(void)
  388. {
  389. return 0;
  390. }
  391. static inline int security_binder_set_context_mgr(struct task_struct *mgr)
  392. {
  393. return 0;
  394. }
  395. static inline int security_binder_transaction(struct task_struct *from,
  396. struct task_struct *to)
  397. {
  398. return 0;
  399. }
  400. static inline int security_binder_transfer_binder(struct task_struct *from,
  401. struct task_struct *to)
  402. {
  403. return 0;
  404. }
  405. static inline int security_binder_transfer_file(struct task_struct *from,
  406. struct task_struct *to,
  407. struct file *file)
  408. {
  409. return 0;
  410. }
  411. static inline int security_ptrace_access_check(struct task_struct *child,
  412. unsigned int mode)
  413. {
  414. return cap_ptrace_access_check(child, mode);
  415. }
  416. static inline int security_ptrace_traceme(struct task_struct *parent)
  417. {
  418. return cap_ptrace_traceme(parent);
  419. }
  420. static inline int security_capget(struct task_struct *target,
  421. kernel_cap_t *effective,
  422. kernel_cap_t *inheritable,
  423. kernel_cap_t *permitted)
  424. {
  425. return cap_capget(target, effective, inheritable, permitted);
  426. }
  427. static inline int security_capset(struct cred *new,
  428. const struct cred *old,
  429. const kernel_cap_t *effective,
  430. const kernel_cap_t *inheritable,
  431. const kernel_cap_t *permitted)
  432. {
  433. return cap_capset(new, old, effective, inheritable, permitted);
  434. }
  435. static inline int security_capable(const struct cred *cred,
  436. struct user_namespace *ns, int cap)
  437. {
  438. return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT);
  439. }
  440. static inline int security_capable_noaudit(const struct cred *cred,
  441. struct user_namespace *ns, int cap) {
  442. return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
  443. }
  444. static inline int security_quotactl(int cmds, int type, int id,
  445. struct super_block *sb)
  446. {
  447. return 0;
  448. }
  449. static inline int security_quota_on(struct dentry *dentry)
  450. {
  451. return 0;
  452. }
  453. static inline int security_syslog(int type)
  454. {
  455. return 0;
  456. }
  457. static inline int security_settime64(const struct timespec64 *ts,
  458. const struct timezone *tz)
  459. {
  460. return cap_settime(ts, tz);
  461. }
  462. static inline int security_settime(const struct timespec *ts,
  463. const struct timezone *tz)
  464. {
  465. struct timespec64 ts64 = timespec_to_timespec64(*ts);
  466. return cap_settime(&ts64, tz);
  467. }
  468. static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
  469. {
  470. return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages));
  471. }
  472. static inline int security_bprm_set_creds(struct linux_binprm *bprm)
  473. {
  474. return cap_bprm_set_creds(bprm);
  475. }
  476. static inline int security_bprm_check(struct linux_binprm *bprm)
  477. {
  478. return 0;
  479. }
  480. static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
  481. {
  482. }
  483. static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
  484. {
  485. }
  486. static inline int security_sb_alloc(struct super_block *sb)
  487. {
  488. return 0;
  489. }
  490. static inline void security_sb_free(struct super_block *sb)
  491. { }
  492. static inline int security_sb_copy_data(char *orig, char *copy)
  493. {
  494. return 0;
  495. }
  496. static inline int security_sb_remount(struct super_block *sb, void *data)
  497. {
  498. return 0;
  499. }
  500. static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
  501. {
  502. return 0;
  503. }
  504. static inline int security_sb_show_options(struct seq_file *m,
  505. struct super_block *sb)
  506. {
  507. return 0;
  508. }
  509. static inline int security_sb_statfs(struct dentry *dentry)
  510. {
  511. return 0;
  512. }
  513. static inline int security_sb_mount(const char *dev_name, const struct path *path,
  514. const char *type, unsigned long flags,
  515. void *data)
  516. {
  517. return 0;
  518. }
  519. static inline int security_sb_umount(struct vfsmount *mnt, int flags)
  520. {
  521. return 0;
  522. }
  523. static inline int security_sb_pivotroot(const struct path *old_path,
  524. const struct path *new_path)
  525. {
  526. return 0;
  527. }
  528. static inline int security_sb_set_mnt_opts(struct super_block *sb,
  529. struct security_mnt_opts *opts,
  530. unsigned long kern_flags,
  531. unsigned long *set_kern_flags)
  532. {
  533. return 0;
  534. }
  535. static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
  536. struct super_block *newsb,
  537. unsigned long kern_flags,
  538. unsigned long *set_kern_flags)
  539. {
  540. return 0;
  541. }
  542. static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
  543. {
  544. return 0;
  545. }
  546. static inline int security_inode_alloc(struct inode *inode)
  547. {
  548. return 0;
  549. }
  550. static inline void security_inode_free(struct inode *inode)
  551. { }
  552. static inline int security_dentry_init_security(struct dentry *dentry,
  553. int mode,
  554. const struct qstr *name,
  555. void **ctx,
  556. u32 *ctxlen)
  557. {
  558. return -EOPNOTSUPP;
  559. }
  560. static inline int security_dentry_create_files_as(struct dentry *dentry,
  561. int mode, struct qstr *name,
  562. const struct cred *old,
  563. struct cred *new)
  564. {
  565. return 0;
  566. }
  567. static inline int security_inode_init_security(struct inode *inode,
  568. struct inode *dir,
  569. const struct qstr *qstr,
  570. const initxattrs xattrs,
  571. void *fs_data)
  572. {
  573. return 0;
  574. }
  575. static inline int security_old_inode_init_security(struct inode *inode,
  576. struct inode *dir,
  577. const struct qstr *qstr,
  578. const char **name,
  579. void **value, size_t *len)
  580. {
  581. return -EOPNOTSUPP;
  582. }
  583. static inline int security_inode_create(struct inode *dir,
  584. struct dentry *dentry,
  585. umode_t mode)
  586. {
  587. return 0;
  588. }
  589. static inline int security_inode_link(struct dentry *old_dentry,
  590. struct inode *dir,
  591. struct dentry *new_dentry)
  592. {
  593. return 0;
  594. }
  595. static inline int security_inode_unlink(struct inode *dir,
  596. struct dentry *dentry)
  597. {
  598. return 0;
  599. }
  600. static inline int security_inode_symlink(struct inode *dir,
  601. struct dentry *dentry,
  602. const char *old_name)
  603. {
  604. return 0;
  605. }
  606. static inline int security_inode_mkdir(struct inode *dir,
  607. struct dentry *dentry,
  608. int mode)
  609. {
  610. return 0;
  611. }
  612. static inline int security_inode_rmdir(struct inode *dir,
  613. struct dentry *dentry)
  614. {
  615. return 0;
  616. }
  617. static inline int security_inode_mknod(struct inode *dir,
  618. struct dentry *dentry,
  619. int mode, dev_t dev)
  620. {
  621. return 0;
  622. }
  623. static inline int security_inode_rename(struct inode *old_dir,
  624. struct dentry *old_dentry,
  625. struct inode *new_dir,
  626. struct dentry *new_dentry,
  627. unsigned int flags)
  628. {
  629. return 0;
  630. }
  631. static inline int security_inode_readlink(struct dentry *dentry)
  632. {
  633. return 0;
  634. }
  635. static inline int security_inode_follow_link(struct dentry *dentry,
  636. struct inode *inode,
  637. bool rcu)
  638. {
  639. return 0;
  640. }
  641. static inline int security_inode_permission(struct inode *inode, int mask)
  642. {
  643. return 0;
  644. }
  645. static inline int security_inode_setattr(struct dentry *dentry,
  646. struct iattr *attr)
  647. {
  648. return 0;
  649. }
  650. static inline int security_inode_getattr(const struct path *path)
  651. {
  652. return 0;
  653. }
  654. static inline int security_inode_setxattr(struct dentry *dentry,
  655. const char *name, const void *value, size_t size, int flags)
  656. {
  657. return cap_inode_setxattr(dentry, name, value, size, flags);
  658. }
  659. static inline void security_inode_post_setxattr(struct dentry *dentry,
  660. const char *name, const void *value, size_t size, int flags)
  661. { }
  662. static inline int security_inode_getxattr(struct dentry *dentry,
  663. const char *name)
  664. {
  665. return 0;
  666. }
  667. static inline int security_inode_listxattr(struct dentry *dentry)
  668. {
  669. return 0;
  670. }
  671. static inline int security_inode_removexattr(struct dentry *dentry,
  672. const char *name)
  673. {
  674. return cap_inode_removexattr(dentry, name);
  675. }
  676. static inline int security_inode_need_killpriv(struct dentry *dentry)
  677. {
  678. return cap_inode_need_killpriv(dentry);
  679. }
  680. static inline int security_inode_killpriv(struct dentry *dentry)
  681. {
  682. return cap_inode_killpriv(dentry);
  683. }
  684. static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
  685. {
  686. return -EOPNOTSUPP;
  687. }
  688. static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
  689. {
  690. return -EOPNOTSUPP;
  691. }
  692. static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
  693. {
  694. return 0;
  695. }
  696. static inline void security_inode_getsecid(struct inode *inode, u32 *secid)
  697. {
  698. *secid = 0;
  699. }
  700. static inline int security_inode_copy_up(struct dentry *src, struct cred **new)
  701. {
  702. return 0;
  703. }
  704. static inline int security_inode_copy_up_xattr(const char *name)
  705. {
  706. return -EOPNOTSUPP;
  707. }
  708. static inline int security_file_permission(struct file *file, int mask)
  709. {
  710. return 0;
  711. }
  712. static inline int security_file_alloc(struct file *file)
  713. {
  714. return 0;
  715. }
  716. static inline void security_file_free(struct file *file)
  717. { }
  718. static inline int security_file_ioctl(struct file *file, unsigned int cmd,
  719. unsigned long arg)
  720. {
  721. return 0;
  722. }
  723. static inline int security_mmap_file(struct file *file, unsigned long prot,
  724. unsigned long flags)
  725. {
  726. return 0;
  727. }
  728. static inline int security_mmap_addr(unsigned long addr)
  729. {
  730. return cap_mmap_addr(addr);
  731. }
  732. static inline int security_file_mprotect(struct vm_area_struct *vma,
  733. unsigned long reqprot,
  734. unsigned long prot)
  735. {
  736. return 0;
  737. }
  738. static inline int security_file_lock(struct file *file, unsigned int cmd)
  739. {
  740. return 0;
  741. }
  742. static inline int security_file_fcntl(struct file *file, unsigned int cmd,
  743. unsigned long arg)
  744. {
  745. return 0;
  746. }
  747. static inline void security_file_set_fowner(struct file *file)
  748. {
  749. return;
  750. }
  751. static inline int security_file_send_sigiotask(struct task_struct *tsk,
  752. struct fown_struct *fown,
  753. int sig)
  754. {
  755. return 0;
  756. }
  757. static inline int security_file_receive(struct file *file)
  758. {
  759. return 0;
  760. }
  761. static inline int security_file_open(struct file *file,
  762. const struct cred *cred)
  763. {
  764. return 0;
  765. }
  766. static inline int security_task_alloc(struct task_struct *task,
  767. unsigned long clone_flags)
  768. {
  769. return 0;
  770. }
  771. static inline void security_task_free(struct task_struct *task)
  772. { }
  773. static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
  774. {
  775. return 0;
  776. }
  777. static inline void security_cred_free(struct cred *cred)
  778. { }
  779. static inline int security_prepare_creds(struct cred *new,
  780. const struct cred *old,
  781. gfp_t gfp)
  782. {
  783. return 0;
  784. }
  785. static inline void security_transfer_creds(struct cred *new,
  786. const struct cred *old)
  787. {
  788. }
  789. static inline int security_kernel_act_as(struct cred *cred, u32 secid)
  790. {
  791. return 0;
  792. }
  793. static inline int security_kernel_create_files_as(struct cred *cred,
  794. struct inode *inode)
  795. {
  796. return 0;
  797. }
  798. static inline int security_kernel_module_request(char *kmod_name)
  799. {
  800. return 0;
  801. }
  802. static inline int security_kernel_read_file(struct file *file,
  803. enum kernel_read_file_id id)
  804. {
  805. return 0;
  806. }
  807. static inline int security_kernel_post_read_file(struct file *file,
  808. char *buf, loff_t size,
  809. enum kernel_read_file_id id)
  810. {
  811. return 0;
  812. }
  813. static inline int security_task_fix_setuid(struct cred *new,
  814. const struct cred *old,
  815. int flags)
  816. {
  817. return cap_task_fix_setuid(new, old, flags);
  818. }
  819. static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
  820. {
  821. return 0;
  822. }
  823. static inline int security_task_getpgid(struct task_struct *p)
  824. {
  825. return 0;
  826. }
  827. static inline int security_task_getsid(struct task_struct *p)
  828. {
  829. return 0;
  830. }
  831. static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
  832. {
  833. *secid = 0;
  834. }
  835. static inline int security_task_setnice(struct task_struct *p, int nice)
  836. {
  837. return cap_task_setnice(p, nice);
  838. }
  839. static inline int security_task_setioprio(struct task_struct *p, int ioprio)
  840. {
  841. return cap_task_setioprio(p, ioprio);
  842. }
  843. static inline int security_task_getioprio(struct task_struct *p)
  844. {
  845. return 0;
  846. }
  847. static inline int security_task_prlimit(const struct cred *cred,
  848. const struct cred *tcred,
  849. unsigned int flags)
  850. {
  851. return 0;
  852. }
  853. static inline int security_task_setrlimit(struct task_struct *p,
  854. unsigned int resource,
  855. struct rlimit *new_rlim)
  856. {
  857. return 0;
  858. }
  859. static inline int security_task_setscheduler(struct task_struct *p)
  860. {
  861. return cap_task_setscheduler(p);
  862. }
  863. static inline int security_task_getscheduler(struct task_struct *p)
  864. {
  865. return 0;
  866. }
  867. static inline int security_task_movememory(struct task_struct *p)
  868. {
  869. return 0;
  870. }
  871. static inline int security_task_kill(struct task_struct *p,
  872. struct siginfo *info, int sig,
  873. u32 secid)
  874. {
  875. return 0;
  876. }
  877. static inline int security_task_prctl(int option, unsigned long arg2,
  878. unsigned long arg3,
  879. unsigned long arg4,
  880. unsigned long arg5)
  881. {
  882. return cap_task_prctl(option, arg2, arg3, arg4, arg5);
  883. }
  884. static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
  885. { }
  886. static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
  887. short flag)
  888. {
  889. return 0;
  890. }
  891. static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
  892. {
  893. *secid = 0;
  894. }
  895. static inline int security_msg_msg_alloc(struct msg_msg *msg)
  896. {
  897. return 0;
  898. }
  899. static inline void security_msg_msg_free(struct msg_msg *msg)
  900. { }
  901. static inline int security_msg_queue_alloc(struct msg_queue *msq)
  902. {
  903. return 0;
  904. }
  905. static inline void security_msg_queue_free(struct msg_queue *msq)
  906. { }
  907. static inline int security_msg_queue_associate(struct msg_queue *msq,
  908. int msqflg)
  909. {
  910. return 0;
  911. }
  912. static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
  913. {
  914. return 0;
  915. }
  916. static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
  917. struct msg_msg *msg, int msqflg)
  918. {
  919. return 0;
  920. }
  921. static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
  922. struct msg_msg *msg,
  923. struct task_struct *target,
  924. long type, int mode)
  925. {
  926. return 0;
  927. }
  928. static inline int security_shm_alloc(struct shmid_kernel *shp)
  929. {
  930. return 0;
  931. }
  932. static inline void security_shm_free(struct shmid_kernel *shp)
  933. { }
  934. static inline int security_shm_associate(struct shmid_kernel *shp,
  935. int shmflg)
  936. {
  937. return 0;
  938. }
  939. static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
  940. {
  941. return 0;
  942. }
  943. static inline int security_shm_shmat(struct shmid_kernel *shp,
  944. char __user *shmaddr, int shmflg)
  945. {
  946. return 0;
  947. }
  948. static inline int security_sem_alloc(struct sem_array *sma)
  949. {
  950. return 0;
  951. }
  952. static inline void security_sem_free(struct sem_array *sma)
  953. { }
  954. static inline int security_sem_associate(struct sem_array *sma, int semflg)
  955. {
  956. return 0;
  957. }
  958. static inline int security_sem_semctl(struct sem_array *sma, int cmd)
  959. {
  960. return 0;
  961. }
  962. static inline int security_sem_semop(struct sem_array *sma,
  963. struct sembuf *sops, unsigned nsops,
  964. int alter)
  965. {
  966. return 0;
  967. }
  968. static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
  969. { }
  970. static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
  971. {
  972. return -EINVAL;
  973. }
  974. static inline int security_setprocattr(char *name, void *value, size_t size)
  975. {
  976. return -EINVAL;
  977. }
  978. static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
  979. {
  980. return 0;
  981. }
  982. static inline int security_ismaclabel(const char *name)
  983. {
  984. return 0;
  985. }
  986. static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
  987. {
  988. return -EOPNOTSUPP;
  989. }
  990. static inline int security_secctx_to_secid(const char *secdata,
  991. u32 seclen,
  992. u32 *secid)
  993. {
  994. return -EOPNOTSUPP;
  995. }
  996. static inline void security_release_secctx(char *secdata, u32 seclen)
  997. {
  998. }
  999. static inline void security_inode_invalidate_secctx(struct inode *inode)
  1000. {
  1001. }
  1002. static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
  1003. {
  1004. return -EOPNOTSUPP;
  1005. }
  1006. static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
  1007. {
  1008. return -EOPNOTSUPP;
  1009. }
  1010. static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
  1011. {
  1012. return -EOPNOTSUPP;
  1013. }
  1014. #endif /* CONFIG_SECURITY */
  1015. #ifdef CONFIG_SECURITY_NETWORK
  1016. int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
  1017. int security_unix_may_send(struct socket *sock, struct socket *other);
  1018. int security_socket_create(int family, int type, int protocol, int kern);
  1019. int security_socket_post_create(struct socket *sock, int family,
  1020. int type, int protocol, int kern);
  1021. int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
  1022. int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
  1023. int security_socket_listen(struct socket *sock, int backlog);
  1024. int security_socket_accept(struct socket *sock, struct socket *newsock);
  1025. int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
  1026. int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
  1027. int size, int flags);
  1028. int security_socket_getsockname(struct socket *sock);
  1029. int security_socket_getpeername(struct socket *sock);
  1030. int security_socket_getsockopt(struct socket *sock, int level, int optname);
  1031. int security_socket_setsockopt(struct socket *sock, int level, int optname);
  1032. int security_socket_shutdown(struct socket *sock, int how);
  1033. int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
  1034. int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
  1035. int __user *optlen, unsigned len);
  1036. int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
  1037. int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
  1038. void security_sk_free(struct sock *sk);
  1039. void security_sk_clone(const struct sock *sk, struct sock *newsk);
  1040. void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
  1041. void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
  1042. void security_sock_graft(struct sock*sk, struct socket *parent);
  1043. int security_inet_conn_request(struct sock *sk,
  1044. struct sk_buff *skb, struct request_sock *req);
  1045. void security_inet_csk_clone(struct sock *newsk,
  1046. const struct request_sock *req);
  1047. void security_inet_conn_established(struct sock *sk,
  1048. struct sk_buff *skb);
  1049. int security_secmark_relabel_packet(u32 secid);
  1050. void security_secmark_refcount_inc(void);
  1051. void security_secmark_refcount_dec(void);
  1052. int security_tun_dev_alloc_security(void **security);
  1053. void security_tun_dev_free_security(void *security);
  1054. int security_tun_dev_create(void);
  1055. int security_tun_dev_attach_queue(void *security);
  1056. int security_tun_dev_attach(struct sock *sk, void *security);
  1057. int security_tun_dev_open(void *security);
  1058. #else /* CONFIG_SECURITY_NETWORK */
  1059. static inline int security_unix_stream_connect(struct sock *sock,
  1060. struct sock *other,
  1061. struct sock *newsk)
  1062. {
  1063. return 0;
  1064. }
  1065. static inline int security_unix_may_send(struct socket *sock,
  1066. struct socket *other)
  1067. {
  1068. return 0;
  1069. }
  1070. static inline int security_socket_create(int family, int type,
  1071. int protocol, int kern)
  1072. {
  1073. return 0;
  1074. }
  1075. static inline int security_socket_post_create(struct socket *sock,
  1076. int family,
  1077. int type,
  1078. int protocol, int kern)
  1079. {
  1080. return 0;
  1081. }
  1082. static inline int security_socket_bind(struct socket *sock,
  1083. struct sockaddr *address,
  1084. int addrlen)
  1085. {
  1086. return 0;
  1087. }
  1088. static inline int security_socket_connect(struct socket *sock,
  1089. struct sockaddr *address,
  1090. int addrlen)
  1091. {
  1092. return 0;
  1093. }
  1094. static inline int security_socket_listen(struct socket *sock, int backlog)
  1095. {
  1096. return 0;
  1097. }
  1098. static inline int security_socket_accept(struct socket *sock,
  1099. struct socket *newsock)
  1100. {
  1101. return 0;
  1102. }
  1103. static inline int security_socket_sendmsg(struct socket *sock,
  1104. struct msghdr *msg, int size)
  1105. {
  1106. return 0;
  1107. }
  1108. static inline int security_socket_recvmsg(struct socket *sock,
  1109. struct msghdr *msg, int size,
  1110. int flags)
  1111. {
  1112. return 0;
  1113. }
  1114. static inline int security_socket_getsockname(struct socket *sock)
  1115. {
  1116. return 0;
  1117. }
  1118. static inline int security_socket_getpeername(struct socket *sock)
  1119. {
  1120. return 0;
  1121. }
  1122. static inline int security_socket_getsockopt(struct socket *sock,
  1123. int level, int optname)
  1124. {
  1125. return 0;
  1126. }
  1127. static inline int security_socket_setsockopt(struct socket *sock,
  1128. int level, int optname)
  1129. {
  1130. return 0;
  1131. }
  1132. static inline int security_socket_shutdown(struct socket *sock, int how)
  1133. {
  1134. return 0;
  1135. }
  1136. static inline int security_sock_rcv_skb(struct sock *sk,
  1137. struct sk_buff *skb)
  1138. {
  1139. return 0;
  1140. }
  1141. static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
  1142. int __user *optlen, unsigned len)
  1143. {
  1144. return -ENOPROTOOPT;
  1145. }
  1146. static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
  1147. {
  1148. return -ENOPROTOOPT;
  1149. }
  1150. static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
  1151. {
  1152. return 0;
  1153. }
  1154. static inline void security_sk_free(struct sock *sk)
  1155. {
  1156. }
  1157. static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
  1158. {
  1159. }
  1160. static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
  1161. {
  1162. }
  1163. static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
  1164. {
  1165. }
  1166. static inline void security_sock_graft(struct sock *sk, struct socket *parent)
  1167. {
  1168. }
  1169. static inline int security_inet_conn_request(struct sock *sk,
  1170. struct sk_buff *skb, struct request_sock *req)
  1171. {
  1172. return 0;
  1173. }
  1174. static inline void security_inet_csk_clone(struct sock *newsk,
  1175. const struct request_sock *req)
  1176. {
  1177. }
  1178. static inline void security_inet_conn_established(struct sock *sk,
  1179. struct sk_buff *skb)
  1180. {
  1181. }
  1182. static inline int security_secmark_relabel_packet(u32 secid)
  1183. {
  1184. return 0;
  1185. }
  1186. static inline void security_secmark_refcount_inc(void)
  1187. {
  1188. }
  1189. static inline void security_secmark_refcount_dec(void)
  1190. {
  1191. }
  1192. static inline int security_tun_dev_alloc_security(void **security)
  1193. {
  1194. return 0;
  1195. }
  1196. static inline void security_tun_dev_free_security(void *security)
  1197. {
  1198. }
  1199. static inline int security_tun_dev_create(void)
  1200. {
  1201. return 0;
  1202. }
  1203. static inline int security_tun_dev_attach_queue(void *security)
  1204. {
  1205. return 0;
  1206. }
  1207. static inline int security_tun_dev_attach(struct sock *sk, void *security)
  1208. {
  1209. return 0;
  1210. }
  1211. static inline int security_tun_dev_open(void *security)
  1212. {
  1213. return 0;
  1214. }
  1215. #endif /* CONFIG_SECURITY_NETWORK */
  1216. #ifdef CONFIG_SECURITY_INFINIBAND
  1217. int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey);
  1218. int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num);
  1219. int security_ib_alloc_security(void **sec);
  1220. void security_ib_free_security(void *sec);
  1221. #else /* CONFIG_SECURITY_INFINIBAND */
  1222. static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
  1223. {
  1224. return 0;
  1225. }
  1226. static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
  1227. {
  1228. return 0;
  1229. }
  1230. static inline int security_ib_alloc_security(void **sec)
  1231. {
  1232. return 0;
  1233. }
  1234. static inline void security_ib_free_security(void *sec)
  1235. {
  1236. }
  1237. #endif /* CONFIG_SECURITY_INFINIBAND */
  1238. #ifdef CONFIG_SECURITY_NETWORK_XFRM
  1239. int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
  1240. struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
  1241. int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
  1242. void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
  1243. int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
  1244. int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
  1245. int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
  1246. struct xfrm_sec_ctx *polsec, u32 secid);
  1247. int security_xfrm_state_delete(struct xfrm_state *x);
  1248. void security_xfrm_state_free(struct xfrm_state *x);
  1249. int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
  1250. int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
  1251. struct xfrm_policy *xp,
  1252. const struct flowi *fl);
  1253. int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
  1254. void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
  1255. #else /* CONFIG_SECURITY_NETWORK_XFRM */
  1256. static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
  1257. struct xfrm_user_sec_ctx *sec_ctx,
  1258. gfp_t gfp)
  1259. {
  1260. return 0;
  1261. }
  1262. static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
  1263. {
  1264. return 0;
  1265. }
  1266. static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
  1267. {
  1268. }
  1269. static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
  1270. {
  1271. return 0;
  1272. }
  1273. static inline int security_xfrm_state_alloc(struct xfrm_state *x,
  1274. struct xfrm_user_sec_ctx *sec_ctx)
  1275. {
  1276. return 0;
  1277. }
  1278. static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
  1279. struct xfrm_sec_ctx *polsec, u32 secid)
  1280. {
  1281. return 0;
  1282. }
  1283. static inline void security_xfrm_state_free(struct xfrm_state *x)
  1284. {
  1285. }
  1286. static inline int security_xfrm_state_delete(struct xfrm_state *x)
  1287. {
  1288. return 0;
  1289. }
  1290. static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
  1291. {
  1292. return 0;
  1293. }
  1294. static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
  1295. struct xfrm_policy *xp, const struct flowi *fl)
  1296. {
  1297. return 1;
  1298. }
  1299. static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
  1300. {
  1301. return 0;
  1302. }
  1303. static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
  1304. {
  1305. }
  1306. #endif /* CONFIG_SECURITY_NETWORK_XFRM */
  1307. #ifdef CONFIG_SECURITY_PATH
  1308. int security_path_unlink(const struct path *dir, struct dentry *dentry);
  1309. int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode);
  1310. int security_path_rmdir(const struct path *dir, struct dentry *dentry);
  1311. int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
  1312. unsigned int dev);
  1313. int security_path_truncate(const struct path *path);
  1314. int security_path_symlink(const struct path *dir, struct dentry *dentry,
  1315. const char *old_name);
  1316. int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
  1317. struct dentry *new_dentry);
  1318. int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
  1319. const struct path *new_dir, struct dentry *new_dentry,
  1320. unsigned int flags);
  1321. int security_path_chmod(const struct path *path, umode_t mode);
  1322. int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid);
  1323. int security_path_chroot(const struct path *path);
  1324. #else /* CONFIG_SECURITY_PATH */
  1325. static inline int security_path_unlink(const struct path *dir, struct dentry *dentry)
  1326. {
  1327. return 0;
  1328. }
  1329. static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry,
  1330. umode_t mode)
  1331. {
  1332. return 0;
  1333. }
  1334. static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry)
  1335. {
  1336. return 0;
  1337. }
  1338. static inline int security_path_mknod(const struct path *dir, struct dentry *dentry,
  1339. umode_t mode, unsigned int dev)
  1340. {
  1341. return 0;
  1342. }
  1343. static inline int security_path_truncate(const struct path *path)
  1344. {
  1345. return 0;
  1346. }
  1347. static inline int security_path_symlink(const struct path *dir, struct dentry *dentry,
  1348. const char *old_name)
  1349. {
  1350. return 0;
  1351. }
  1352. static inline int security_path_link(struct dentry *old_dentry,
  1353. const struct path *new_dir,
  1354. struct dentry *new_dentry)
  1355. {
  1356. return 0;
  1357. }
  1358. static inline int security_path_rename(const struct path *old_dir,
  1359. struct dentry *old_dentry,
  1360. const struct path *new_dir,
  1361. struct dentry *new_dentry,
  1362. unsigned int flags)
  1363. {
  1364. return 0;
  1365. }
  1366. static inline int security_path_chmod(const struct path *path, umode_t mode)
  1367. {
  1368. return 0;
  1369. }
  1370. static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
  1371. {
  1372. return 0;
  1373. }
  1374. static inline int security_path_chroot(const struct path *path)
  1375. {
  1376. return 0;
  1377. }
  1378. #endif /* CONFIG_SECURITY_PATH */
  1379. #ifdef CONFIG_KEYS
  1380. #ifdef CONFIG_SECURITY
  1381. int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
  1382. void security_key_free(struct key *key);
  1383. int security_key_permission(key_ref_t key_ref,
  1384. const struct cred *cred, unsigned perm);
  1385. int security_key_getsecurity(struct key *key, char **_buffer);
  1386. #else
  1387. static inline int security_key_alloc(struct key *key,
  1388. const struct cred *cred,
  1389. unsigned long flags)
  1390. {
  1391. return 0;
  1392. }
  1393. static inline void security_key_free(struct key *key)
  1394. {
  1395. }
  1396. static inline int security_key_permission(key_ref_t key_ref,
  1397. const struct cred *cred,
  1398. unsigned perm)
  1399. {
  1400. return 0;
  1401. }
  1402. static inline int security_key_getsecurity(struct key *key, char **_buffer)
  1403. {
  1404. *_buffer = NULL;
  1405. return 0;
  1406. }
  1407. #endif
  1408. #endif /* CONFIG_KEYS */
  1409. #ifdef CONFIG_AUDIT
  1410. #ifdef CONFIG_SECURITY
  1411. int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
  1412. int security_audit_rule_known(struct audit_krule *krule);
  1413. int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
  1414. struct audit_context *actx);
  1415. void security_audit_rule_free(void *lsmrule);
  1416. #else
  1417. static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
  1418. void **lsmrule)
  1419. {
  1420. return 0;
  1421. }
  1422. static inline int security_audit_rule_known(struct audit_krule *krule)
  1423. {
  1424. return 0;
  1425. }
  1426. static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
  1427. void *lsmrule, struct audit_context *actx)
  1428. {
  1429. return 0;
  1430. }
  1431. static inline void security_audit_rule_free(void *lsmrule)
  1432. { }
  1433. #endif /* CONFIG_SECURITY */
  1434. #endif /* CONFIG_AUDIT */
  1435. #ifdef CONFIG_SECURITYFS
  1436. extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
  1437. struct dentry *parent, void *data,
  1438. const struct file_operations *fops);
  1439. extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
  1440. struct dentry *securityfs_create_symlink(const char *name,
  1441. struct dentry *parent,
  1442. const char *target,
  1443. const struct inode_operations *iops);
  1444. extern void securityfs_remove(struct dentry *dentry);
  1445. #else /* CONFIG_SECURITYFS */
  1446. static inline struct dentry *securityfs_create_dir(const char *name,
  1447. struct dentry *parent)
  1448. {
  1449. return ERR_PTR(-ENODEV);
  1450. }
  1451. static inline struct dentry *securityfs_create_file(const char *name,
  1452. umode_t mode,
  1453. struct dentry *parent,
  1454. void *data,
  1455. const struct file_operations *fops)
  1456. {
  1457. return ERR_PTR(-ENODEV);
  1458. }
  1459. static inline struct dentry *securityfs_create_symlink(const char *name,
  1460. struct dentry *parent,
  1461. const char *target,
  1462. const struct inode_operations *iops)
  1463. {
  1464. return ERR_PTR(-ENODEV);
  1465. }
  1466. static inline void securityfs_remove(struct dentry *dentry)
  1467. {}
  1468. #endif
  1469. #ifdef CONFIG_BPF_SYSCALL
  1470. #ifdef CONFIG_SECURITY
  1471. extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size);
  1472. extern int security_bpf_map(struct bpf_map *map, fmode_t fmode);
  1473. extern int security_bpf_prog(struct bpf_prog *prog);
  1474. extern int security_bpf_map_alloc(struct bpf_map *map);
  1475. extern void security_bpf_map_free(struct bpf_map *map);
  1476. extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux);
  1477. extern void security_bpf_prog_free(struct bpf_prog_aux *aux);
  1478. #else
  1479. static inline int security_bpf(int cmd, union bpf_attr *attr,
  1480. unsigned int size)
  1481. {
  1482. return 0;
  1483. }
  1484. static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode)
  1485. {
  1486. return 0;
  1487. }
  1488. static inline int security_bpf_prog(struct bpf_prog *prog)
  1489. {
  1490. return 0;
  1491. }
  1492. static inline int security_bpf_map_alloc(struct bpf_map *map)
  1493. {
  1494. return 0;
  1495. }
  1496. static inline void security_bpf_map_free(struct bpf_map *map)
  1497. { }
  1498. static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
  1499. {
  1500. return 0;
  1501. }
  1502. static inline void security_bpf_prog_free(struct bpf_prog_aux *aux)
  1503. { }
  1504. #endif /* CONFIG_SECURITY */
  1505. #endif /* CONFIG_BPF_SYSCALL */
  1506. #ifdef CONFIG_SECURITY
  1507. static inline char *alloc_secdata(void)
  1508. {
  1509. return (char *)get_zeroed_page(GFP_KERNEL);
  1510. }
  1511. static inline void free_secdata(void *secdata)
  1512. {
  1513. free_page((unsigned long)secdata);
  1514. }
  1515. #else
  1516. static inline char *alloc_secdata(void)
  1517. {
  1518. return (char *)1;
  1519. }
  1520. static inline void free_secdata(void *secdata)
  1521. { }
  1522. #endif /* CONFIG_SECURITY */
  1523. #endif /* ! __LINUX_SECURITY_H */