include/linux/security.h

   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  *
  10  *      This program is free software; you can redistribute it and/or modify
  11  *      it under the terms of the GNU General Public License as published by
  12  *      the Free Software Foundation; either version 2 of the License, or
  13  *      (at your option) any later version.
  14  *
  15  *      Due to this file being licensed under the GPL there is controversy over
  16  *      whether this permits you to write a module that #includes this file
  17  *      without placing your module under the GPL.  Please consult a lawyer for
  18  *      advice before doing this.
  19  *
  20  */
  21
  22 #ifndef __LINUX_SECURITY_H
  23 #define __LINUX_SECURITY_H
  24
  25 #include <linux/key.h>
  26 #include <linux/capability.h>
  27 #include <linux/slab.h>
  28 #include <linux/err.h>
  29 #include <linux/string.h>
  30 #include <linux/mm.h>
  31
  32 struct linux_binprm;
  33 struct cred;
  34 struct rlimit;
  35 struct siginfo;
  36 struct sem_array;
  37 struct sembuf;
  38 struct kern_ipc_perm;
  39 struct audit_context;
  40 struct super_block;
  41 struct inode;
  42 struct dentry;
  43 struct file;
  44 struct vfsmount;
  45 struct path;
  46 struct qstr;
  47 struct nameidata;
  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
  58 /* If capable should audit the security request */
  59 #define SECURITY_CAP_NOAUDIT 0
  60 #define SECURITY_CAP_AUDIT 1
  61
  62 /* LSM Agnostic defines for sb_set_mnt_opts */
  63 #define SECURITY_LSM_NATIVE_LABELS      1
  64
  65 struct ctl_table;
  66 struct audit_krule;
  67 struct user_namespace;
  68 struct timezone;
  69
  70 /* These functions are in security/commoncap.c */
  71 extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
  72                        int cap, int audit);
  73 extern int cap_settime(const struct timespec *ts, const struct timezone *tz);
  74 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
  75 extern int cap_ptrace_traceme(struct task_struct *parent);
  76 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
  77 extern int cap_capset(struct cred *new, const struct cred *old,
  78                       const kernel_cap_t *effective,
  79                       const kernel_cap_t *inheritable,
  80                       const kernel_cap_t *permitted);
  81 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
  82 extern int cap_bprm_secureexec(struct linux_binprm *bprm);
  83 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
  84                               const void *value, size_t size, int flags);
  85 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
  86 extern int cap_inode_need_killpriv(struct dentry *dentry);
  87 extern int cap_inode_killpriv(struct dentry *dentry);
  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
  99 struct msghdr;
 100 struct sk_buff;
 101 struct sock;
 102 struct sockaddr;
 103 struct socket;
 104 struct flowi;
 105 struct dst_entry;
 106 struct xfrm_selector;
 107 struct xfrm_policy;
 108 struct xfrm_state;
 109 struct xfrm_user_sec_ctx;
 110 struct seq_file;
 111
 112 #ifdef CONFIG_MMU
 113 extern unsigned long mmap_min_addr;
 114 extern unsigned long dac_mmap_min_addr;
 115 #else
 116 #define mmap_min_addr           0UL
 117 #define dac_mmap_min_addr       0UL
 118 #endif
 119
 120 /*
 121  * Values used in the task_security_ops calls
 122  */
 123 /* setuid or setgid, id0 == uid or gid */
 124 #define LSM_SETID_ID    1
 125
 126 /* setreuid or setregid, id0 == real, id1 == eff */
 127 #define LSM_SETID_RE    2
 128
 129 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
 130 #define LSM_SETID_RES   4
 131
 132 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
 133 #define LSM_SETID_FS    8
 134
 135 /* forward declares to avoid warnings */
 136 struct sched_param;
 137 struct request_sock;
 138
 139 /* bprm->unsafe reasons */
 140 #define LSM_UNSAFE_SHARE        1
 141 #define LSM_UNSAFE_PTRACE       2
 142 #define LSM_UNSAFE_PTRACE_CAP   4
 143 #define LSM_UNSAFE_NO_NEW_PRIVS 8
 144
 145 #ifdef CONFIG_MMU
 146 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
 147                                  void __user *buffer, size_t *lenp, loff_t *ppos);
 148 #endif
 149
 150 /* security_inode_init_security callback function to write xattrs */
 151 typedef int (*initxattrs) (struct inode *inode,
 152                            const struct xattr *xattr_array, void *fs_data);
 153
 154 #ifdef CONFIG_SECURITY
 155
 156 struct security_mnt_opts {
 157         char **mnt_opts;
 158         int *mnt_opts_flags;
 159         int num_mnt_opts;
 160 };
 161
 162 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
 163 {
 164         opts->mnt_opts = NULL;
 165         opts->mnt_opts_flags = NULL;
 166         opts->num_mnt_opts = 0;
 167 }
 168
 169 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
 170 {
 171         int i;
 172         if (opts->mnt_opts)
 173                 for (i = 0; i < opts->num_mnt_opts; i++)
 174                         kfree(opts->mnt_opts[i]);
 175         kfree(opts->mnt_opts);
 176         opts->mnt_opts = NULL;
 177         kfree(opts->mnt_opts_flags);
 178         opts->mnt_opts_flags = NULL;
 179         opts->num_mnt_opts = 0;
 180 }
 181
 182 /* prototypes */
 183 extern int security_init(void);
 184
 185 /* Security operations */
 186 int security_binder_set_context_mgr(struct task_struct *mgr);
 187 int security_binder_transaction(struct task_struct *from,
 188                                 struct task_struct *to);
 189 int security_binder_transfer_binder(struct task_struct *from,
 190                                     struct task_struct *to);
 191 int security_binder_transfer_file(struct task_struct *from,
 192                                   struct task_struct *to, struct file *file);
 193 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
 194 int security_ptrace_traceme(struct task_struct *parent);
 195 int security_capget(struct task_struct *target,
 196                     kernel_cap_t *effective,
 197                     kernel_cap_t *inheritable,
 198                     kernel_cap_t *permitted);
 199 int security_capset(struct cred *new, const struct cred *old,
 200                     const kernel_cap_t *effective,
 201                     const kernel_cap_t *inheritable,
 202                     const kernel_cap_t *permitted);
 203 int security_capable(const struct cred *cred, struct user_namespace *ns,
 204                         int cap);
 205 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
 206                              int cap);
 207 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
 208 int security_quota_on(struct dentry *dentry);
 209 int security_syslog(int type);
 210 int security_settime(const struct timespec *ts, const struct timezone *tz);
 211 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
 212 int security_bprm_set_creds(struct linux_binprm *bprm);
 213 int security_bprm_check(struct linux_binprm *bprm);
 214 void security_bprm_committing_creds(struct linux_binprm *bprm);
 215 void security_bprm_committed_creds(struct linux_binprm *bprm);
 216 int security_bprm_secureexec(struct linux_binprm *bprm);
 217 int security_sb_alloc(struct super_block *sb);
 218 void security_sb_free(struct super_block *sb);
 219 int security_sb_copy_data(char *orig, char *copy);
 220 int security_sb_remount(struct super_block *sb, void *data);
 221 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
 222 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
 223 int security_sb_statfs(struct dentry *dentry);
 224 int security_sb_mount(const char *dev_name, struct path *path,
 225                       const char *type, unsigned long flags, void *data);
 226 int security_sb_umount(struct vfsmount *mnt, int flags);
 227 int security_sb_pivotroot(struct path *old_path, struct path *new_path);
 228 int security_sb_set_mnt_opts(struct super_block *sb,
 229                                 struct security_mnt_opts *opts,
 230                                 unsigned long kern_flags,
 231                                 unsigned long *set_kern_flags);
 232 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 233                                 struct super_block *newsb);
 234 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
 235 int security_dentry_init_security(struct dentry *dentry, int mode,
 236                                         struct qstr *name, void **ctx,
 237                                         u32 *ctxlen);
 238
 239 int security_inode_alloc(struct inode *inode);
 240 void security_inode_free(struct inode *inode);
 241 int security_inode_init_security(struct inode *inode, struct inode *dir,
 242                                  const struct qstr *qstr,
 243                                  initxattrs initxattrs, void *fs_data);
 244 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
 245                                      const struct qstr *qstr, const char **name,
 246                                      void **value, size_t *len);
 247 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
 248 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 249                          struct dentry *new_dentry);
 250 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
 251 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 252                            const char *old_name);
 253 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
 254 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
 255 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
 256 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 257                           struct inode *new_dir, struct dentry *new_dentry,
 258                           unsigned int flags);
 259 int security_inode_readlink(struct dentry *dentry);
 260 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
 261 int security_inode_permission(struct inode *inode, int mask);
 262 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
 263 int security_inode_getattr(const struct path *path);
 264 int security_inode_setxattr(struct dentry *dentry, const char *name,
 265                             const void *value, size_t size, int flags);
 266 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 267                                   const void *value, size_t size, int flags);
 268 int security_inode_getxattr(struct dentry *dentry, const char *name);
 269 int security_inode_listxattr(struct dentry *dentry);
 270 int security_inode_removexattr(struct dentry *dentry, const char *name);
 271 int security_inode_need_killpriv(struct dentry *dentry);
 272 int security_inode_killpriv(struct dentry *dentry);
 273 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
 274 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
 275 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
 276 void security_inode_getsecid(const struct inode *inode, u32 *secid);
 277 int security_file_permission(struct file *file, int mask);
 278 int security_file_alloc(struct file *file);
 279 void security_file_free(struct file *file);
 280 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
 281 int security_mmap_file(struct file *file, unsigned long prot,
 282                         unsigned long flags);
 283 int security_mmap_addr(unsigned long addr);
 284 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 285                            unsigned long prot);
 286 int security_file_lock(struct file *file, unsigned int cmd);
 287 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
 288 void security_file_set_fowner(struct file *file);
 289 int security_file_send_sigiotask(struct task_struct *tsk,
 290                                  struct fown_struct *fown, int sig);
 291 int security_file_receive(struct file *file);
 292 int security_file_open(struct file *file, const struct cred *cred);
 293 int security_task_create(unsigned long clone_flags);
 294 void security_task_free(struct task_struct *task);
 295 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
 296 void security_cred_free(struct cred *cred);
 297 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
 298 void security_transfer_creds(struct cred *new, const struct cred *old);
 299 int security_kernel_act_as(struct cred *new, u32 secid);
 300 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
 301 int security_kernel_fw_from_file(struct file *file, char *buf, size_t size);
 302 int security_kernel_module_request(char *kmod_name);
 303 int security_kernel_module_from_file(struct file *file);
 304 int security_task_fix_setuid(struct cred *new, const struct cred *old,
 305                              int flags);
 306 int security_task_setpgid(struct task_struct *p, pid_t pgid);
 307 int security_task_getpgid(struct task_struct *p);
 308 int security_task_getsid(struct task_struct *p);
 309 void security_task_getsecid(struct task_struct *p, u32 *secid);
 310 int security_task_setnice(struct task_struct *p, int nice);
 311 int security_task_setioprio(struct task_struct *p, int ioprio);
 312 int security_task_getioprio(struct task_struct *p);
 313 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
 314                 struct rlimit *new_rlim);
 315 int security_task_setscheduler(struct task_struct *p);
 316 int security_task_getscheduler(struct task_struct *p);
 317 int security_task_movememory(struct task_struct *p);
 318 int security_task_kill(struct task_struct *p, struct siginfo *info,
 319                         int sig, u32 secid);
 320 int security_task_wait(struct task_struct *p);
 321 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 322                         unsigned long arg4, unsigned long arg5);
 323 void security_task_to_inode(struct task_struct *p, struct inode *inode);
 324 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
 325 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
 326 int security_msg_msg_alloc(struct msg_msg *msg);
 327 void security_msg_msg_free(struct msg_msg *msg);
 328 int security_msg_queue_alloc(struct msg_queue *msq);
 329 void security_msg_queue_free(struct msg_queue *msq);
 330 int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
 331 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
 332 int security_msg_queue_msgsnd(struct msg_queue *msq,
 333                               struct msg_msg *msg, int msqflg);
 334 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
 335                               struct task_struct *target, long type, int mode);
 336 int security_shm_alloc(struct shmid_kernel *shp);
 337 void security_shm_free(struct shmid_kernel *shp);
 338 int security_shm_associate(struct shmid_kernel *shp, int shmflg);
 339 int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
 340 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
 341 int security_sem_alloc(struct sem_array *sma);
 342 void security_sem_free(struct sem_array *sma);
 343 int security_sem_associate(struct sem_array *sma, int semflg);
 344 int security_sem_semctl(struct sem_array *sma, int cmd);
 345 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
 346                         unsigned nsops, int alter);
 347 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
 348 int security_getprocattr(struct task_struct *p, char *name, char **value);
 349 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
 350 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
 351 int security_ismaclabel(const char *name);
 352 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
 353 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
 354 void security_release_secctx(char *secdata, u32 seclen);
 355
 356 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
 357 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
 358 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
 359 #else /* CONFIG_SECURITY */
 360 struct security_mnt_opts {
 361 };
 362
 363 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
 364 {
 365 }
 366
 367 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
 368 {
 369 }
 370
 371 /*
 372  * This is the default capabilities functionality.  Most of these functions
 373  * are just stubbed out, but a few must call the proper capable code.
 374  */
 375
 376 static inline int security_init(void)
 377 {
 378         return 0;
 379 }
 380
 381 static inline int security_binder_set_context_mgr(struct task_struct *mgr)
 382 {
 383         return 0;
 384 }
 385
 386 static inline int security_binder_transaction(struct task_struct *from,
 387                                               struct task_struct *to)
 388 {
 389         return 0;
 390 }
 391
 392 static inline int security_binder_transfer_binder(struct task_struct *from,
 393                                                   struct task_struct *to)
 394 {
 395         return 0;
 396 }
 397
 398 static inline int security_binder_transfer_file(struct task_struct *from,
 399                                                 struct task_struct *to,
 400                                                 struct file *file)
 401 {
 402         return 0;
 403 }
 404
 405 static inline int security_ptrace_access_check(struct task_struct *child,
 406                                              unsigned int mode)
 407 {
 408         return cap_ptrace_access_check(child, mode);
 409 }
 410
 411 static inline int security_ptrace_traceme(struct task_struct *parent)
 412 {
 413         return cap_ptrace_traceme(parent);
 414 }
 415
 416 static inline int security_capget(struct task_struct *target,
 417                                    kernel_cap_t *effective,
 418                                    kernel_cap_t *inheritable,
 419                                    kernel_cap_t *permitted)
 420 {
 421         return cap_capget(target, effective, inheritable, permitted);
 422 }
 423
 424 static inline int security_capset(struct cred *new,
 425                                    const struct cred *old,
 426                                    const kernel_cap_t *effective,
 427                                    const kernel_cap_t *inheritable,
 428                                    const kernel_cap_t *permitted)
 429 {
 430         return cap_capset(new, old, effective, inheritable, permitted);
 431 }
 432
 433 static inline int security_capable(const struct cred *cred,
 434                                    struct user_namespace *ns, int cap)
 435 {
 436         return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT);
 437 }
 438
 439 static inline int security_capable_noaudit(const struct cred *cred,
 440                                            struct user_namespace *ns, int cap) {
 441         return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
 442 }
 443
 444 static inline int security_quotactl(int cmds, int type, int id,
 445                                      struct super_block *sb)
 446 {
 447         return 0;
 448 }
 449
 450 static inline int security_quota_on(struct dentry *dentry)
 451 {
 452         return 0;
 453 }
 454
 455 static inline int security_syslog(int type)
 456 {
 457         return 0;
 458 }
 459
 460 static inline int security_settime(const struct timespec *ts,
 461                                    const struct timezone *tz)
 462 {
 463         return cap_settime(ts, tz);
 464 }
 465
 466 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 467 {
 468         return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages));
 469 }
 470
 471 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
 472 {
 473         return cap_bprm_set_creds(bprm);
 474 }
 475
 476 static inline int security_bprm_check(struct linux_binprm *bprm)
 477 {
 478         return 0;
 479 }
 480
 481 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
 482 {
 483 }
 484
 485 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
 486 {
 487 }
 488
 489 static inline int security_bprm_secureexec(struct linux_binprm *bprm)
 490 {
 491         return cap_bprm_secureexec(bprm);
 492 }
 493
 494 static inline int security_sb_alloc(struct super_block *sb)
 495 {
 496         return 0;
 497 }
 498
 499 static inline void security_sb_free(struct super_block *sb)
 500 { }
 501
 502 static inline int security_sb_copy_data(char *orig, char *copy)
 503 {
 504         return 0;
 505 }
 506
 507 static inline int security_sb_remount(struct super_block *sb, void *data)
 508 {
 509         return 0;
 510 }
 511
 512 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
 513 {
 514         return 0;
 515 }
 516
 517 static inline int security_sb_show_options(struct seq_file *m,
 518                                            struct super_block *sb)
 519 {
 520         return 0;
 521 }
 522
 523 static inline int security_sb_statfs(struct dentry *dentry)
 524 {
 525         return 0;
 526 }
 527
 528 static inline int security_sb_mount(const char *dev_name, struct path *path,
 529                                     const char *type, unsigned long flags,
 530                                     void *data)
 531 {
 532         return 0;
 533 }
 534
 535 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
 536 {
 537         return 0;
 538 }
 539
 540 static inline int security_sb_pivotroot(struct path *old_path,
 541                                         struct path *new_path)
 542 {
 543         return 0;
 544 }
 545
 546 static inline int security_sb_set_mnt_opts(struct super_block *sb,
 547                                            struct security_mnt_opts *opts,
 548                                            unsigned long kern_flags,
 549                                            unsigned long *set_kern_flags)
 550 {
 551         return 0;
 552 }
 553
 554 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 555                                               struct super_block *newsb)
 556 {
 557         return 0;
 558 }
 559
 560 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
 561 {
 562         return 0;
 563 }
 564
 565 static inline int security_inode_alloc(struct inode *inode)
 566 {
 567         return 0;
 568 }
 569
 570 static inline void security_inode_free(struct inode *inode)
 571 { }
 572
 573 static inline int security_dentry_init_security(struct dentry *dentry,
 574                                                  int mode,
 575                                                  struct qstr *name,
 576                                                  void **ctx,
 577                                                  u32 *ctxlen)
 578 {
 579         return -EOPNOTSUPP;
 580 }
 581
 582
 583 static inline int security_inode_init_security(struct inode *inode,
 584                                                 struct inode *dir,
 585                                                 const struct qstr *qstr,
 586                                                 const initxattrs xattrs,
 587                                                 void *fs_data)
 588 {
 589         return 0;
 590 }
 591
 592 static inline int security_old_inode_init_security(struct inode *inode,
 593                                                    struct inode *dir,
 594                                                    const struct qstr *qstr,
 595                                                    const char **name,
 596                                                    void **value, size_t *len)
 597 {
 598         return -EOPNOTSUPP;
 599 }
 600
 601 static inline int security_inode_create(struct inode *dir,
 602                                          struct dentry *dentry,
 603                                          umode_t mode)
 604 {
 605         return 0;
 606 }
 607
 608 static inline int security_inode_link(struct dentry *old_dentry,
 609                                        struct inode *dir,
 610                                        struct dentry *new_dentry)
 611 {
 612         return 0;
 613 }
 614
 615 static inline int security_inode_unlink(struct inode *dir,
 616                                          struct dentry *dentry)
 617 {
 618         return 0;
 619 }
 620
 621 static inline int security_inode_symlink(struct inode *dir,
 622                                           struct dentry *dentry,
 623                                           const char *old_name)
 624 {
 625         return 0;
 626 }
 627
 628 static inline int security_inode_mkdir(struct inode *dir,
 629                                         struct dentry *dentry,
 630                                         int mode)
 631 {
 632         return 0;
 633 }
 634
 635 static inline int security_inode_rmdir(struct inode *dir,
 636                                         struct dentry *dentry)
 637 {
 638         return 0;
 639 }
 640
 641 static inline int security_inode_mknod(struct inode *dir,
 642                                         struct dentry *dentry,
 643                                         int mode, dev_t dev)
 644 {
 645         return 0;
 646 }
 647
 648 static inline int security_inode_rename(struct inode *old_dir,
 649                                          struct dentry *old_dentry,
 650                                          struct inode *new_dir,
 651                                          struct dentry *new_dentry,
 652                                          unsigned int flags)
 653 {
 654         return 0;
 655 }
 656
 657 static inline int security_inode_readlink(struct dentry *dentry)
 658 {
 659         return 0;
 660 }
 661
 662 static inline int security_inode_follow_link(struct dentry *dentry,
 663                                               struct nameidata *nd)
 664 {
 665         return 0;
 666 }
 667
 668 static inline int security_inode_permission(struct inode *inode, int mask)
 669 {
 670         return 0;
 671 }
 672
 673 static inline int security_inode_setattr(struct dentry *dentry,
 674                                           struct iattr *attr)
 675 {
 676         return 0;
 677 }
 678
 679 static inline int security_inode_getattr(const struct path *path)
 680 {
 681         return 0;
 682 }
 683
 684 static inline int security_inode_setxattr(struct dentry *dentry,
 685                 const char *name, const void *value, size_t size, int flags)
 686 {
 687         return cap_inode_setxattr(dentry, name, value, size, flags);
 688 }
 689
 690 static inline void security_inode_post_setxattr(struct dentry *dentry,
 691                 const char *name, const void *value, size_t size, int flags)
 692 { }
 693
 694 static inline int security_inode_getxattr(struct dentry *dentry,
 695                         const char *name)
 696 {
 697         return 0;
 698 }
 699
 700 static inline int security_inode_listxattr(struct dentry *dentry)
 701 {
 702         return 0;
 703 }
 704
 705 static inline int security_inode_removexattr(struct dentry *dentry,
 706                         const char *name)
 707 {
 708         return cap_inode_removexattr(dentry, name);
 709 }
 710
 711 static inline int security_inode_need_killpriv(struct dentry *dentry)
 712 {
 713         return cap_inode_need_killpriv(dentry);
 714 }
 715
 716 static inline int security_inode_killpriv(struct dentry *dentry)
 717 {
 718         return cap_inode_killpriv(dentry);
 719 }
 720
 721 static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
 722 {
 723         return -EOPNOTSUPP;
 724 }
 725
 726 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 727 {
 728         return -EOPNOTSUPP;
 729 }
 730
 731 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 732 {
 733         return 0;
 734 }
 735
 736 static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
 737 {
 738         *secid = 0;
 739 }
 740
 741 static inline int security_file_permission(struct file *file, int mask)
 742 {
 743         return 0;
 744 }
 745
 746 static inline int security_file_alloc(struct file *file)
 747 {
 748         return 0;
 749 }
 750
 751 static inline void security_file_free(struct file *file)
 752 { }
 753
 754 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
 755                                       unsigned long arg)
 756 {
 757         return 0;
 758 }
 759
 760 static inline int security_mmap_file(struct file *file, unsigned long prot,
 761                                      unsigned long flags)
 762 {
 763         return 0;
 764 }
 765
 766 static inline int security_mmap_addr(unsigned long addr)
 767 {
 768         return cap_mmap_addr(addr);
 769 }
 770
 771 static inline int security_file_mprotect(struct vm_area_struct *vma,
 772                                          unsigned long reqprot,
 773                                          unsigned long prot)
 774 {
 775         return 0;
 776 }
 777
 778 static inline int security_file_lock(struct file *file, unsigned int cmd)
 779 {
 780         return 0;
 781 }
 782
 783 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
 784                                       unsigned long arg)
 785 {
 786         return 0;
 787 }
 788
 789 static inline void security_file_set_fowner(struct file *file)
 790 {
 791         return;
 792 }
 793
 794 static inline int security_file_send_sigiotask(struct task_struct *tsk,
 795                                                struct fown_struct *fown,
 796                                                int sig)
 797 {
 798         return 0;
 799 }
 800
 801 static inline int security_file_receive(struct file *file)
 802 {
 803         return 0;
 804 }
 805
 806 static inline int security_file_open(struct file *file,
 807                                      const struct cred *cred)
 808 {
 809         return 0;
 810 }
 811
 812 static inline int security_task_create(unsigned long clone_flags)
 813 {
 814         return 0;
 815 }
 816
 817 static inline void security_task_free(struct task_struct *task)
 818 { }
 819
 820 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 821 {
 822         return 0;
 823 }
 824
 825 static inline void security_cred_free(struct cred *cred)
 826 { }
 827
 828 static inline int security_prepare_creds(struct cred *new,
 829                                          const struct cred *old,
 830                                          gfp_t gfp)
 831 {
 832         return 0;
 833 }
 834
 835 static inline void security_transfer_creds(struct cred *new,
 836                                            const struct cred *old)
 837 {
 838 }
 839
 840 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
 841 {
 842         return 0;
 843 }
 844
 845 static inline int security_kernel_create_files_as(struct cred *cred,
 846                                                   struct inode *inode)
 847 {
 848         return 0;
 849 }
 850
 851 static inline int security_kernel_fw_from_file(struct file *file,
 852                                                char *buf, size_t size)
 853 {
 854         return 0;
 855 }
 856
 857 static inline int security_kernel_module_request(char *kmod_name)
 858 {
 859         return 0;
 860 }
 861
 862 static inline int security_kernel_module_from_file(struct file *file)
 863 {
 864         return 0;
 865 }
 866
 867 static inline int security_task_fix_setuid(struct cred *new,
 868                                            const struct cred *old,
 869                                            int flags)
 870 {
 871         return cap_task_fix_setuid(new, old, flags);
 872 }
 873
 874 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
 875 {
 876         return 0;
 877 }
 878
 879 static inline int security_task_getpgid(struct task_struct *p)
 880 {
 881         return 0;
 882 }
 883
 884 static inline int security_task_getsid(struct task_struct *p)
 885 {
 886         return 0;
 887 }
 888
 889 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
 890 {
 891         *secid = 0;
 892 }
 893
 894 static inline int security_task_setnice(struct task_struct *p, int nice)
 895 {
 896         return cap_task_setnice(p, nice);
 897 }
 898
 899 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
 900 {
 901         return cap_task_setioprio(p, ioprio);
 902 }
 903
 904 static inline int security_task_getioprio(struct task_struct *p)
 905 {
 906         return 0;
 907 }
 908
 909 static inline int security_task_setrlimit(struct task_struct *p,
 910                                           unsigned int resource,
 911                                           struct rlimit *new_rlim)
 912 {
 913         return 0;
 914 }
 915
 916 static inline int security_task_setscheduler(struct task_struct *p)
 917 {
 918         return cap_task_setscheduler(p);
 919 }
 920
 921 static inline int security_task_getscheduler(struct task_struct *p)
 922 {
 923         return 0;
 924 }
 925
 926 static inline int security_task_movememory(struct task_struct *p)
 927 {
 928         return 0;
 929 }
 930
 931 static inline int security_task_kill(struct task_struct *p,
 932                                      struct siginfo *info, int sig,
 933                                      u32 secid)
 934 {
 935         return 0;
 936 }
 937
 938 static inline int security_task_wait(struct task_struct *p)
 939 {
 940         return 0;
 941 }
 942
 943 static inline int security_task_prctl(int option, unsigned long arg2,
 944                                       unsigned long arg3,
 945                                       unsigned long arg4,
 946                                       unsigned long arg5)
 947 {
 948         return cap_task_prctl(option, arg2, arg3, arg3, arg5);
 949 }
 950
 951 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
 952 { }
 953
 954 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
 955                                           short flag)
 956 {
 957         return 0;
 958 }
 959
 960 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
 961 {
 962         *secid = 0;
 963 }
 964
 965 static inline int security_msg_msg_alloc(struct msg_msg *msg)
 966 {
 967         return 0;
 968 }
 969
 970 static inline void security_msg_msg_free(struct msg_msg *msg)
 971 { }
 972
 973 static inline int security_msg_queue_alloc(struct msg_queue *msq)
 974 {
 975         return 0;
 976 }
 977
 978 static inline void security_msg_queue_free(struct msg_queue *msq)
 979 { }
 980
 981 static inline int security_msg_queue_associate(struct msg_queue *msq,
 982                                                int msqflg)
 983 {
 984         return 0;
 985 }
 986
 987 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
 988 {
 989         return 0;
 990 }
 991
 992 static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
 993                                             struct msg_msg *msg, int msqflg)
 994 {
 995         return 0;
 996 }
 997
 998 static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
 999                                             struct msg_msg *msg,
1000                                             struct task_struct *target,
1001                                             long type, int mode)
1002 {
1003         return 0;
1004 }
1005
1006 static inline int security_shm_alloc(struct shmid_kernel *shp)
1007 {
1008         return 0;
1009 }
1010
1011 static inline void security_shm_free(struct shmid_kernel *shp)
1012 { }
1013
1014 static inline int security_shm_associate(struct shmid_kernel *shp,
1015                                          int shmflg)
1016 {
1017         return 0;
1018 }
1019
1020 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
1021 {
1022         return 0;
1023 }
1024
1025 static inline int security_shm_shmat(struct shmid_kernel *shp,
1026                                      char __user *shmaddr, int shmflg)
1027 {
1028         return 0;
1029 }
1030
1031 static inline int security_sem_alloc(struct sem_array *sma)
1032 {
1033         return 0;
1034 }
1035
1036 static inline void security_sem_free(struct sem_array *sma)
1037 { }
1038
1039 static inline int security_sem_associate(struct sem_array *sma, int semflg)
1040 {
1041         return 0;
1042 }
1043
1044 static inline int security_sem_semctl(struct sem_array *sma, int cmd)
1045 {
1046         return 0;
1047 }
1048
1049 static inline int security_sem_semop(struct sem_array *sma,
1050                                      struct sembuf *sops, unsigned nsops,
1051                                      int alter)
1052 {
1053         return 0;
1054 }
1055
1056 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1057 { }
1058
1059 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
1060 {
1061         return -EINVAL;
1062 }
1063
1064 static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
1065 {
1066         return -EINVAL;
1067 }
1068
1069 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1070 {
1071         return 0;
1072 }
1073
1074 static inline int security_ismaclabel(const char *name)
1075 {
1076         return 0;
1077 }
1078
1079 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1080 {
1081         return -EOPNOTSUPP;
1082 }
1083
1084 static inline int security_secctx_to_secid(const char *secdata,
1085                                            u32 seclen,
1086                                            u32 *secid)
1087 {
1088         return -EOPNOTSUPP;
1089 }
1090
1091 static inline void security_release_secctx(char *secdata, u32 seclen)
1092 {
1093 }
1094
1095 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1096 {
1097         return -EOPNOTSUPP;
1098 }
1099 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1100 {
1101         return -EOPNOTSUPP;
1102 }
1103 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1104 {
1105         return -EOPNOTSUPP;
1106 }
1107 #endif  /* CONFIG_SECURITY */
1108
1109 #ifdef CONFIG_SECURITY_NETWORK
1110
1111 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
1112 int security_unix_may_send(struct socket *sock,  struct socket *other);
1113 int security_socket_create(int family, int type, int protocol, int kern);
1114 int security_socket_post_create(struct socket *sock, int family,
1115                                 int type, int protocol, int kern);
1116 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
1117 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
1118 int security_socket_listen(struct socket *sock, int backlog);
1119 int security_socket_accept(struct socket *sock, struct socket *newsock);
1120 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
1121 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1122                             int size, int flags);
1123 int security_socket_getsockname(struct socket *sock);
1124 int security_socket_getpeername(struct socket *sock);
1125 int security_socket_getsockopt(struct socket *sock, int level, int optname);
1126 int security_socket_setsockopt(struct socket *sock, int level, int optname);
1127 int security_socket_shutdown(struct socket *sock, int how);
1128 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
1129 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1130                                       int __user *optlen, unsigned len);
1131 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
1132 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
1133 void security_sk_free(struct sock *sk);
1134 void security_sk_clone(const struct sock *sk, struct sock *newsk);
1135 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
1136 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
1137 void security_sock_graft(struct sock*sk, struct socket *parent);
1138 int security_inet_conn_request(struct sock *sk,
1139                         struct sk_buff *skb, struct request_sock *req);
1140 void security_inet_csk_clone(struct sock *newsk,
1141                         const struct request_sock *req);
1142 void security_inet_conn_established(struct sock *sk,
1143                         struct sk_buff *skb);
1144 int security_secmark_relabel_packet(u32 secid);
1145 void security_secmark_refcount_inc(void);
1146 void security_secmark_refcount_dec(void);
1147 int security_tun_dev_alloc_security(void **security);
1148 void security_tun_dev_free_security(void *security);
1149 int security_tun_dev_create(void);
1150 int security_tun_dev_attach_queue(void *security);
1151 int security_tun_dev_attach(struct sock *sk, void *security);
1152 int security_tun_dev_open(void *security);
1153
1154 #else   /* CONFIG_SECURITY_NETWORK */
1155 static inline int security_unix_stream_connect(struct sock *sock,
1156                                                struct sock *other,
1157                                                struct sock *newsk)
1158 {
1159         return 0;
1160 }
1161
1162 static inline int security_unix_may_send(struct socket *sock,
1163                                          struct socket *other)
1164 {
1165         return 0;
1166 }
1167
1168 static inline int security_socket_create(int family, int type,
1169                                          int protocol, int kern)
1170 {
1171         return 0;
1172 }
1173
1174 static inline int security_socket_post_create(struct socket *sock,
1175                                               int family,
1176                                               int type,
1177                                               int protocol, int kern)
1178 {
1179         return 0;
1180 }
1181
1182 static inline int security_socket_bind(struct socket *sock,
1183                                        struct sockaddr *address,
1184                                        int addrlen)
1185 {
1186         return 0;
1187 }
1188
1189 static inline int security_socket_connect(struct socket *sock,
1190                                           struct sockaddr *address,
1191                                           int addrlen)
1192 {
1193         return 0;
1194 }
1195
1196 static inline int security_socket_listen(struct socket *sock, int backlog)
1197 {
1198         return 0;
1199 }
1200
1201 static inline int security_socket_accept(struct socket *sock,
1202                                          struct socket *newsock)
1203 {
1204         return 0;
1205 }
1206
1207 static inline int security_socket_sendmsg(struct socket *sock,
1208                                           struct msghdr *msg, int size)
1209 {
1210         return 0;
1211 }
1212
1213 static inline int security_socket_recvmsg(struct socket *sock,
1214                                           struct msghdr *msg, int size,
1215                                           int flags)
1216 {
1217         return 0;
1218 }
1219
1220 static inline int security_socket_getsockname(struct socket *sock)
1221 {
1222         return 0;
1223 }
1224
1225 static inline int security_socket_getpeername(struct socket *sock)
1226 {
1227         return 0;
1228 }
1229
1230 static inline int security_socket_getsockopt(struct socket *sock,
1231                                              int level, int optname)
1232 {
1233         return 0;
1234 }
1235
1236 static inline int security_socket_setsockopt(struct socket *sock,
1237                                              int level, int optname)
1238 {
1239         return 0;
1240 }
1241
1242 static inline int security_socket_shutdown(struct socket *sock, int how)
1243 {
1244         return 0;
1245 }
1246 static inline int security_sock_rcv_skb(struct sock *sk,
1247                                         struct sk_buff *skb)
1248 {
1249         return 0;
1250 }
1251
1252 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1253                                                     int __user *optlen, unsigned len)
1254 {
1255         return -ENOPROTOOPT;
1256 }
1257
1258 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1259 {
1260         return -ENOPROTOOPT;
1261 }
1262
1263 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1264 {
1265         return 0;
1266 }
1267
1268 static inline void security_sk_free(struct sock *sk)
1269 {
1270 }
1271
1272 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
1273 {
1274 }
1275
1276 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1277 {
1278 }
1279
1280 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1281 {
1282 }
1283
1284 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
1285 {
1286 }
1287
1288 static inline int security_inet_conn_request(struct sock *sk,
1289                         struct sk_buff *skb, struct request_sock *req)
1290 {
1291         return 0;
1292 }
1293
1294 static inline void security_inet_csk_clone(struct sock *newsk,
1295                         const struct request_sock *req)
1296 {
1297 }
1298
1299 static inline void security_inet_conn_established(struct sock *sk,
1300                         struct sk_buff *skb)
1301 {
1302 }
1303
1304 static inline int security_secmark_relabel_packet(u32 secid)
1305 {
1306         return 0;
1307 }
1308
1309 static inline void security_secmark_refcount_inc(void)
1310 {
1311 }
1312
1313 static inline void security_secmark_refcount_dec(void)
1314 {
1315 }
1316
1317 static inline int security_tun_dev_alloc_security(void **security)
1318 {
1319         return 0;
1320 }
1321
1322 static inline void security_tun_dev_free_security(void *security)
1323 {
1324 }
1325
1326 static inline int security_tun_dev_create(void)
1327 {
1328         return 0;
1329 }
1330
1331 static inline int security_tun_dev_attach_queue(void *security)
1332 {
1333         return 0;
1334 }
1335
1336 static inline int security_tun_dev_attach(struct sock *sk, void *security)
1337 {
1338         return 0;
1339 }
1340
1341 static inline int security_tun_dev_open(void *security)
1342 {
1343         return 0;
1344 }
1345 #endif  /* CONFIG_SECURITY_NETWORK */
1346
1347 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1348
1349 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1350                                struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
1351 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
1352 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
1353 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
1354 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
1355 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1356                                       struct xfrm_sec_ctx *polsec, u32 secid);
1357 int security_xfrm_state_delete(struct xfrm_state *x);
1358 void security_xfrm_state_free(struct xfrm_state *x);
1359 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1360 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1361                                        struct xfrm_policy *xp,
1362                                        const struct flowi *fl);
1363 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
1364 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
1365
1366 #else   /* CONFIG_SECURITY_NETWORK_XFRM */
1367
1368 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1369                                              struct xfrm_user_sec_ctx *sec_ctx,
1370                                              gfp_t gfp)
1371 {
1372         return 0;
1373 }
1374
1375 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
1376 {
1377         return 0;
1378 }
1379
1380 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1381 {
1382 }
1383
1384 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1385 {
1386         return 0;
1387 }
1388
1389 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
1390                                         struct xfrm_user_sec_ctx *sec_ctx)
1391 {
1392         return 0;
1393 }
1394
1395 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1396                                         struct xfrm_sec_ctx *polsec, u32 secid)
1397 {
1398         return 0;
1399 }
1400
1401 static inline void security_xfrm_state_free(struct xfrm_state *x)
1402 {
1403 }
1404
1405 static inline int security_xfrm_state_delete(struct xfrm_state *x)
1406 {
1407         return 0;
1408 }
1409
1410 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1411 {
1412         return 0;
1413 }
1414
1415 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1416                         struct xfrm_policy *xp, const struct flowi *fl)
1417 {
1418         return 1;
1419 }
1420
1421 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1422 {
1423         return 0;
1424 }
1425
1426 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1427 {
1428 }
1429
1430 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1431
1432 #ifdef CONFIG_SECURITY_PATH
1433 int security_path_unlink(struct path *dir, struct dentry *dentry);
1434 int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode);
1435 int security_path_rmdir(struct path *dir, struct dentry *dentry);
1436 int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode,
1437                         unsigned int dev);
1438 int security_path_truncate(struct path *path);
1439 int security_path_symlink(struct path *dir, struct dentry *dentry,
1440                           const char *old_name);
1441 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
1442                        struct dentry *new_dentry);
1443 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
1444                          struct path *new_dir, struct dentry *new_dentry,
1445                          unsigned int flags);
1446 int security_path_chmod(struct path *path, umode_t mode);
1447 int security_path_chown(struct path *path, kuid_t uid, kgid_t gid);
1448 int security_path_chroot(struct path *path);
1449 #else   /* CONFIG_SECURITY_PATH */
1450 static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
1451 {
1452         return 0;
1453 }
1454
1455 static inline int security_path_mkdir(struct path *dir, struct dentry *dentry,
1456                                       umode_t mode)
1457 {
1458         return 0;
1459 }
1460
1461 static inline int security_path_rmdir(struct path *dir, struct dentry *dentry)
1462 {
1463         return 0;
1464 }
1465
1466 static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
1467                                       umode_t mode, unsigned int dev)
1468 {
1469         return 0;
1470 }
1471
1472 static inline int security_path_truncate(struct path *path)
1473 {
1474         return 0;
1475 }
1476
1477 static inline int security_path_symlink(struct path *dir, struct dentry *dentry,
1478                                         const char *old_name)
1479 {
1480         return 0;
1481 }
1482
1483 static inline int security_path_link(struct dentry *old_dentry,
1484                                      struct path *new_dir,
1485                                      struct dentry *new_dentry)
1486 {
1487         return 0;
1488 }
1489
1490 static inline int security_path_rename(struct path *old_dir,
1491                                        struct dentry *old_dentry,
1492                                        struct path *new_dir,
1493                                        struct dentry *new_dentry,
1494                                        unsigned int flags)
1495 {
1496         return 0;
1497 }
1498
1499 static inline int security_path_chmod(struct path *path, umode_t mode)
1500 {
1501         return 0;
1502 }
1503
1504 static inline int security_path_chown(struct path *path, kuid_t uid, kgid_t gid)
1505 {
1506         return 0;
1507 }
1508
1509 static inline int security_path_chroot(struct path *path)
1510 {
1511         return 0;
1512 }
1513 #endif  /* CONFIG_SECURITY_PATH */
1514
1515 #ifdef CONFIG_KEYS
1516 #ifdef CONFIG_SECURITY
1517
1518 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
1519 void security_key_free(struct key *key);
1520 int security_key_permission(key_ref_t key_ref,
1521                             const struct cred *cred, unsigned perm);
1522 int security_key_getsecurity(struct key *key, char **_buffer);
1523
1524 #else
1525
1526 static inline int security_key_alloc(struct key *key,
1527                                      const struct cred *cred,
1528                                      unsigned long flags)
1529 {
1530         return 0;
1531 }
1532
1533 static inline void security_key_free(struct key *key)
1534 {
1535 }
1536
1537 static inline int security_key_permission(key_ref_t key_ref,
1538                                           const struct cred *cred,
1539                                           unsigned perm)
1540 {
1541         return 0;
1542 }
1543
1544 static inline int security_key_getsecurity(struct key *key, char **_buffer)
1545 {
1546         *_buffer = NULL;
1547         return 0;
1548 }
1549
1550 #endif
1551 #endif /* CONFIG_KEYS */
1552
1553 #ifdef CONFIG_AUDIT
1554 #ifdef CONFIG_SECURITY
1555 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
1556 int security_audit_rule_known(struct audit_krule *krule);
1557 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1558                               struct audit_context *actx);
1559 void security_audit_rule_free(void *lsmrule);
1560
1561 #else
1562
1563 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
1564                                            void **lsmrule)
1565 {
1566         return 0;
1567 }
1568
1569 static inline int security_audit_rule_known(struct audit_krule *krule)
1570 {
1571         return 0;
1572 }
1573
1574 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
1575                                    void *lsmrule, struct audit_context *actx)
1576 {
1577         return 0;
1578 }
1579
1580 static inline void security_audit_rule_free(void *lsmrule)
1581 { }
1582
1583 #endif /* CONFIG_SECURITY */
1584 #endif /* CONFIG_AUDIT */
1585
1586 #ifdef CONFIG_SECURITYFS
1587
1588 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
1589                                              struct dentry *parent, void *data,
1590                                              const struct file_operations *fops);
1591 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
1592 extern void securityfs_remove(struct dentry *dentry);
1593
1594 #else /* CONFIG_SECURITYFS */
1595
1596 static inline struct dentry *securityfs_create_dir(const char *name,
1597                                                    struct dentry *parent)
1598 {
1599         return ERR_PTR(-ENODEV);
1600 }
1601
1602 static inline struct dentry *securityfs_create_file(const char *name,
1603                                                     umode_t mode,
1604                                                     struct dentry *parent,
1605                                                     void *data,
1606                                                     const struct file_operations *fops)
1607 {
1608         return ERR_PTR(-ENODEV);
1609 }
1610
1611 static inline void securityfs_remove(struct dentry *dentry)
1612 {}
1613
1614 #endif
1615
1616 #ifdef CONFIG_SECURITY
1617
1618 static inline char *alloc_secdata(void)
1619 {
1620         return (char *)get_zeroed_page(GFP_KERNEL);
1621 }
1622
1623 static inline void free_secdata(void *secdata)
1624 {
1625         free_page((unsigned long)secdata);
1626 }
1627
1628 #else
1629
1630 static inline char *alloc_secdata(void)
1631 {
1632         return (char *)1;
1633 }
1634
1635 static inline void free_secdata(void *secdata)
1636 { }
1637 #endif /* CONFIG_SECURITY */
1638
1639 #endif /* ! __LINUX_SECURITY_H */
1640