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 iattr;
  48 struct fown_struct;
  49 struct file_operations;
  50 struct shmid_kernel;
  51 struct msg_msg;
  52 struct msg_queue;
  53 struct xattr;
  54 struct xfrm_sec_ctx;
  55 struct mm_struct;
  56
  57 /* If capable should audit the security request */
  58 #define SECURITY_CAP_NOAUDIT 0
  59 #define SECURITY_CAP_AUDIT 1
  60
  61 /* LSM Agnostic defines for sb_set_mnt_opts */
  62 #define SECURITY_LSM_NATIVE_LABELS      1
  63
  64 struct ctl_table;
  65 struct audit_krule;
  66 struct user_namespace;
  67 struct timezone;
  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 timespec *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_bprm_secureexec(struct linux_binprm *bprm);
  82 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
  83                               const void *value, size_t size, int flags);
  84 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
  85 extern int cap_inode_need_killpriv(struct dentry *dentry);
  86 extern int cap_inode_killpriv(struct dentry *dentry);
  87 extern int cap_mmap_addr(unsigned long addr);
  88 extern int cap_mmap_file(struct file *file, unsigned long reqprot,
  89                          unsigned long prot, unsigned long flags);
  90 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
  91 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
  92                           unsigned long arg4, unsigned long arg5);
  93 extern int cap_task_setscheduler(struct task_struct *p);
  94 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
  95 extern int cap_task_setnice(struct task_struct *p, int nice);
  96 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
  97
  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
 111 #ifdef CONFIG_MMU
 112 extern unsigned long mmap_min_addr;
 113 extern unsigned long dac_mmap_min_addr;
 114 #else
 115 #define mmap_min_addr           0UL
 116 #define dac_mmap_min_addr       0UL
 117 #endif
 118
 119 /*
 120  * Values used in the task_security_ops calls
 121  */
 122 /* setuid or setgid, id0 == uid or gid */
 123 #define LSM_SETID_ID    1
 124
 125 /* setreuid or setregid, id0 == real, id1 == eff */
 126 #define LSM_SETID_RE    2
 127
 128 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
 129 #define LSM_SETID_RES   4
 130
 131 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
 132 #define LSM_SETID_FS    8
 133
 134 /* forward declares to avoid warnings */
 135 struct sched_param;
 136 struct request_sock;
 137
 138 /* bprm->unsafe reasons */
 139 #define LSM_UNSAFE_SHARE        1
 140 #define LSM_UNSAFE_PTRACE       2
 141 #define LSM_UNSAFE_PTRACE_CAP   4
 142 #define LSM_UNSAFE_NO_NEW_PRIVS 8
 143
 144 #ifdef CONFIG_MMU
 145 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
 146                                  void __user *buffer, size_t *lenp, loff_t *ppos);
 147 #endif
 148
 149 /* security_inode_init_security callback function to write xattrs */
 150 typedef int (*initxattrs) (struct inode *inode,
 151                            const struct xattr *xattr_array, void *fs_data);
 152
 153 #ifdef CONFIG_SECURITY
 154
 155 struct security_mnt_opts {
 156         char **mnt_opts;
 157         int *mnt_opts_flags;
 158         int num_mnt_opts;
 159 };
 160
 161 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
 162 {
 163         opts->mnt_opts = NULL;
 164         opts->mnt_opts_flags = NULL;
 165         opts->num_mnt_opts = 0;
 166 }
 167
 168 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
 169 {
 170         int i;
 171         if (opts->mnt_opts)
 172                 for (i = 0; i < opts->num_mnt_opts; i++)
 173                         kfree(opts->mnt_opts[i]);
 174         kfree(opts->mnt_opts);
 175         opts->mnt_opts = NULL;
 176         kfree(opts->mnt_opts_flags);
 177         opts->mnt_opts_flags = NULL;
 178         opts->num_mnt_opts = 0;
 179 }
 180
 181 /* prototypes */
 182 extern int security_init(void);
 183
 184 /* Security operations */
 185 int security_binder_set_context_mgr(struct task_struct *mgr);
 186 int security_binder_transaction(struct task_struct *from,
 187                                 struct task_struct *to);
 188 int security_binder_transfer_binder(struct task_struct *from,
 189                                     struct task_struct *to);
 190 int security_binder_transfer_file(struct task_struct *from,
 191                                   struct task_struct *to, struct file *file);
 192 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
 193 int security_ptrace_traceme(struct task_struct *parent);
 194 int security_capget(struct task_struct *target,
 195                     kernel_cap_t *effective,
 196                     kernel_cap_t *inheritable,
 197                     kernel_cap_t *permitted);
 198 int security_capset(struct cred *new, const struct cred *old,
 199                     const kernel_cap_t *effective,
 200                     const kernel_cap_t *inheritable,
 201                     const kernel_cap_t *permitted);
 202 int security_capable(const struct cred *cred, struct user_namespace *ns,
 203                         int cap);
 204 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
 205                              int cap);
 206 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
 207 int security_quota_on(struct dentry *dentry);
 208 int security_syslog(int type);
 209 int security_settime(const struct timespec *ts, const struct timezone *tz);
 210 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
 211 int security_bprm_set_creds(struct linux_binprm *bprm);
 212 int security_bprm_check(struct linux_binprm *bprm);
 213 void security_bprm_committing_creds(struct linux_binprm *bprm);
 214 void security_bprm_committed_creds(struct linux_binprm *bprm);
 215 int security_bprm_secureexec(struct linux_binprm *bprm);
 216 int security_sb_alloc(struct super_block *sb);
 217 void security_sb_free(struct super_block *sb);
 218 int security_sb_copy_data(char *orig, char *copy);
 219 int security_sb_remount(struct super_block *sb, void *data);
 220 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
 221 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
 222 int security_sb_statfs(struct dentry *dentry);
 223 int security_sb_mount(const char *dev_name, struct path *path,
 224                       const char *type, unsigned long flags, void *data);
 225 int security_sb_umount(struct vfsmount *mnt, int flags);
 226 int security_sb_pivotroot(struct path *old_path, struct path *new_path);
 227 int security_sb_set_mnt_opts(struct super_block *sb,
 228                                 struct security_mnt_opts *opts,
 229                                 unsigned long kern_flags,
 230                                 unsigned long *set_kern_flags);
 231 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 232                                 struct super_block *newsb);
 233 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
 234 int security_dentry_init_security(struct dentry *dentry, int mode,
 235                                         struct qstr *name, void **ctx,
 236                                         u32 *ctxlen);
 237
 238 int security_inode_alloc(struct inode *inode);
 239 void security_inode_free(struct inode *inode);
 240 int security_inode_init_security(struct inode *inode, struct inode *dir,
 241                                  const struct qstr *qstr,
 242                                  initxattrs initxattrs, void *fs_data);
 243 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
 244                                      const struct qstr *qstr, const char **name,
 245                                      void **value, size_t *len);
 246 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
 247 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 248                          struct dentry *new_dentry);
 249 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
 250 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 251                            const char *old_name);
 252 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
 253 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
 254 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
 255 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 256                           struct inode *new_dir, struct dentry *new_dentry,
 257                           unsigned int flags);
 258 int security_inode_readlink(struct dentry *dentry);
 259 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
 260                                bool rcu);
 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(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(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 void security_inode_invalidate_secctx(struct inode *inode);
 357 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
 358 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
 359 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
 360 #else /* CONFIG_SECURITY */
 361 struct security_mnt_opts {
 362 };
 363
 364 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
 365 {
 366 }
 367
 368 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
 369 {
 370 }
 371
 372 /*
 373  * This is the default capabilities functionality.  Most of these functions
 374  * are just stubbed out, but a few must call the proper capable code.
 375  */
 376
 377 static inline int security_init(void)
 378 {
 379         return 0;
 380 }
 381
 382 static inline int security_binder_set_context_mgr(struct task_struct *mgr)
 383 {
 384         return 0;
 385 }
 386
 387 static inline int security_binder_transaction(struct task_struct *from,
 388                                               struct task_struct *to)
 389 {
 390         return 0;
 391 }
 392
 393 static inline int security_binder_transfer_binder(struct task_struct *from,
 394                                                   struct task_struct *to)
 395 {
 396         return 0;
 397 }
 398
 399 static inline int security_binder_transfer_file(struct task_struct *from,
 400                                                 struct task_struct *to,
 401                                                 struct file *file)
 402 {
 403         return 0;
 404 }
 405
 406 static inline int security_ptrace_access_check(struct task_struct *child,
 407                                              unsigned int mode)
 408 {
 409         return cap_ptrace_access_check(child, mode);
 410 }
 411
 412 static inline int security_ptrace_traceme(struct task_struct *parent)
 413 {
 414         return cap_ptrace_traceme(parent);
 415 }
 416
 417 static inline int security_capget(struct task_struct *target,
 418                                    kernel_cap_t *effective,
 419                                    kernel_cap_t *inheritable,
 420                                    kernel_cap_t *permitted)
 421 {
 422         return cap_capget(target, effective, inheritable, permitted);
 423 }
 424
 425 static inline int security_capset(struct cred *new,
 426                                    const struct cred *old,
 427                                    const kernel_cap_t *effective,
 428                                    const kernel_cap_t *inheritable,
 429                                    const kernel_cap_t *permitted)
 430 {
 431         return cap_capset(new, old, effective, inheritable, permitted);
 432 }
 433
 434 static inline int security_capable(const struct cred *cred,
 435                                    struct user_namespace *ns, int cap)
 436 {
 437         return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT);
 438 }
 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
 445 static inline int security_quotactl(int cmds, int type, int id,
 446                                      struct super_block *sb)
 447 {
 448         return 0;
 449 }
 450
 451 static inline int security_quota_on(struct dentry *dentry)
 452 {
 453         return 0;
 454 }
 455
 456 static inline int security_syslog(int type)
 457 {
 458         return 0;
 459 }
 460
 461 static inline int security_settime(const struct timespec *ts,
 462                                    const struct timezone *tz)
 463 {
 464         return cap_settime(ts, tz);
 465 }
 466
 467 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 468 {
 469         return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages));
 470 }
 471
 472 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
 473 {
 474         return cap_bprm_set_creds(bprm);
 475 }
 476
 477 static inline int security_bprm_check(struct linux_binprm *bprm)
 478 {
 479         return 0;
 480 }
 481
 482 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
 483 {
 484 }
 485
 486 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
 487 {
 488 }
 489
 490 static inline int security_bprm_secureexec(struct linux_binprm *bprm)
 491 {
 492         return cap_bprm_secureexec(bprm);
 493 }
 494
 495 static inline int security_sb_alloc(struct super_block *sb)
 496 {
 497         return 0;
 498 }
 499
 500 static inline void security_sb_free(struct super_block *sb)
 501 { }
 502
 503 static inline int security_sb_copy_data(char *orig, char *copy)
 504 {
 505         return 0;
 506 }
 507
 508 static inline int security_sb_remount(struct super_block *sb, void *data)
 509 {
 510         return 0;
 511 }
 512
 513 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
 514 {
 515         return 0;
 516 }
 517
 518 static inline int security_sb_show_options(struct seq_file *m,
 519                                            struct super_block *sb)
 520 {
 521         return 0;
 522 }
 523
 524 static inline int security_sb_statfs(struct dentry *dentry)
 525 {
 526         return 0;
 527 }
 528
 529 static inline int security_sb_mount(const char *dev_name, struct path *path,
 530                                     const char *type, unsigned long flags,
 531                                     void *data)
 532 {
 533         return 0;
 534 }
 535
 536 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
 537 {
 538         return 0;
 539 }
 540
 541 static inline int security_sb_pivotroot(struct path *old_path,
 542                                         struct path *new_path)
 543 {
 544         return 0;
 545 }
 546
 547 static inline int security_sb_set_mnt_opts(struct super_block *sb,
 548                                            struct security_mnt_opts *opts,
 549                                            unsigned long kern_flags,
 550                                            unsigned long *set_kern_flags)
 551 {
 552         return 0;
 553 }
 554
 555 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 556                                               struct super_block *newsb)
 557 {
 558         return 0;
 559 }
 560
 561 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
 562 {
 563         return 0;
 564 }
 565
 566 static inline int security_inode_alloc(struct inode *inode)
 567 {
 568         return 0;
 569 }
 570
 571 static inline void security_inode_free(struct inode *inode)
 572 { }
 573
 574 static inline int security_dentry_init_security(struct dentry *dentry,
 575                                                  int mode,
 576                                                  struct qstr *name,
 577                                                  void **ctx,
 578                                                  u32 *ctxlen)
 579 {
 580         return -EOPNOTSUPP;
 581 }
 582
 583
 584 static inline int security_inode_init_security(struct inode *inode,
 585                                                 struct inode *dir,
 586                                                 const struct qstr *qstr,
 587                                                 const initxattrs xattrs,
 588                                                 void *fs_data)
 589 {
 590         return 0;
 591 }
 592
 593 static inline int security_old_inode_init_security(struct inode *inode,
 594                                                    struct inode *dir,
 595                                                    const struct qstr *qstr,
 596                                                    const char **name,
 597                                                    void **value, size_t *len)
 598 {
 599         return -EOPNOTSUPP;
 600 }
 601
 602 static inline int security_inode_create(struct inode *dir,
 603                                          struct dentry *dentry,
 604                                          umode_t mode)
 605 {
 606         return 0;
 607 }
 608
 609 static inline int security_inode_link(struct dentry *old_dentry,
 610                                        struct inode *dir,
 611                                        struct dentry *new_dentry)
 612 {
 613         return 0;
 614 }
 615
 616 static inline int security_inode_unlink(struct inode *dir,
 617                                          struct dentry *dentry)
 618 {
 619         return 0;
 620 }
 621
 622 static inline int security_inode_symlink(struct inode *dir,
 623                                           struct dentry *dentry,
 624                                           const char *old_name)
 625 {
 626         return 0;
 627 }
 628
 629 static inline int security_inode_mkdir(struct inode *dir,
 630                                         struct dentry *dentry,
 631                                         int mode)
 632 {
 633         return 0;
 634 }
 635
 636 static inline int security_inode_rmdir(struct inode *dir,
 637                                         struct dentry *dentry)
 638 {
 639         return 0;
 640 }
 641
 642 static inline int security_inode_mknod(struct inode *dir,
 643                                         struct dentry *dentry,
 644                                         int mode, dev_t dev)
 645 {
 646         return 0;
 647 }
 648
 649 static inline int security_inode_rename(struct inode *old_dir,
 650                                          struct dentry *old_dentry,
 651                                          struct inode *new_dir,
 652                                          struct dentry *new_dentry,
 653                                          unsigned int flags)
 654 {
 655         return 0;
 656 }
 657
 658 static inline int security_inode_readlink(struct dentry *dentry)
 659 {
 660         return 0;
 661 }
 662
 663 static inline int security_inode_follow_link(struct dentry *dentry,
 664                                              struct inode *inode,
 665                                              bool rcu)
 666 {
 667         return 0;
 668 }
 669
 670 static inline int security_inode_permission(struct inode *inode, int mask)
 671 {
 672         return 0;
 673 }
 674
 675 static inline int security_inode_setattr(struct dentry *dentry,
 676                                           struct iattr *attr)
 677 {
 678         return 0;
 679 }
 680
 681 static inline int security_inode_getattr(const struct path *path)
 682 {
 683         return 0;
 684 }
 685
 686 static inline int security_inode_setxattr(struct dentry *dentry,
 687                 const char *name, const void *value, size_t size, int flags)
 688 {
 689         return cap_inode_setxattr(dentry, name, value, size, flags);
 690 }
 691
 692 static inline void security_inode_post_setxattr(struct dentry *dentry,
 693                 const char *name, const void *value, size_t size, int flags)
 694 { }
 695
 696 static inline int security_inode_getxattr(struct dentry *dentry,
 697                         const char *name)
 698 {
 699         return 0;
 700 }
 701
 702 static inline int security_inode_listxattr(struct dentry *dentry)
 703 {
 704         return 0;
 705 }
 706
 707 static inline int security_inode_removexattr(struct dentry *dentry,
 708                         const char *name)
 709 {
 710         return cap_inode_removexattr(dentry, name);
 711 }
 712
 713 static inline int security_inode_need_killpriv(struct dentry *dentry)
 714 {
 715         return cap_inode_need_killpriv(dentry);
 716 }
 717
 718 static inline int security_inode_killpriv(struct dentry *dentry)
 719 {
 720         return cap_inode_killpriv(dentry);
 721 }
 722
 723 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
 724 {
 725         return -EOPNOTSUPP;
 726 }
 727
 728 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 729 {
 730         return -EOPNOTSUPP;
 731 }
 732
 733 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 734 {
 735         return 0;
 736 }
 737
 738 static inline void security_inode_getsecid(struct inode *inode, u32 *secid)
 739 {
 740         *secid = 0;
 741 }
 742
 743 static inline int security_file_permission(struct file *file, int mask)
 744 {
 745         return 0;
 746 }
 747
 748 static inline int security_file_alloc(struct file *file)
 749 {
 750         return 0;
 751 }
 752
 753 static inline void security_file_free(struct file *file)
 754 { }
 755
 756 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
 757                                       unsigned long arg)
 758 {
 759         return 0;
 760 }
 761
 762 static inline int security_mmap_file(struct file *file, unsigned long prot,
 763                                      unsigned long flags)
 764 {
 765         return 0;
 766 }
 767
 768 static inline int security_mmap_addr(unsigned long addr)
 769 {
 770         return cap_mmap_addr(addr);
 771 }
 772
 773 static inline int security_file_mprotect(struct vm_area_struct *vma,
 774                                          unsigned long reqprot,
 775                                          unsigned long prot)
 776 {
 777         return 0;
 778 }
 779
 780 static inline int security_file_lock(struct file *file, unsigned int cmd)
 781 {
 782         return 0;
 783 }
 784
 785 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
 786                                       unsigned long arg)
 787 {
 788         return 0;
 789 }
 790
 791 static inline void security_file_set_fowner(struct file *file)
 792 {
 793         return;
 794 }
 795
 796 static inline int security_file_send_sigiotask(struct task_struct *tsk,
 797                                                struct fown_struct *fown,
 798                                                int sig)
 799 {
 800         return 0;
 801 }
 802
 803 static inline int security_file_receive(struct file *file)
 804 {
 805         return 0;
 806 }
 807
 808 static inline int security_file_open(struct file *file,
 809                                      const struct cred *cred)
 810 {
 811         return 0;
 812 }
 813
 814 static inline int security_task_create(unsigned long clone_flags)
 815 {
 816         return 0;
 817 }
 818
 819 static inline void security_task_free(struct task_struct *task)
 820 { }
 821
 822 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 823 {
 824         return 0;
 825 }
 826
 827 static inline void security_cred_free(struct cred *cred)
 828 { }
 829
 830 static inline int security_prepare_creds(struct cred *new,
 831                                          const struct cred *old,
 832                                          gfp_t gfp)
 833 {
 834         return 0;
 835 }
 836
 837 static inline void security_transfer_creds(struct cred *new,
 838                                            const struct cred *old)
 839 {
 840 }
 841
 842 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
 843 {
 844         return 0;
 845 }
 846
 847 static inline int security_kernel_create_files_as(struct cred *cred,
 848                                                   struct inode *inode)
 849 {
 850         return 0;
 851 }
 852
 853 static inline int security_kernel_fw_from_file(struct file *file,
 854                                                char *buf, size_t size)
 855 {
 856         return 0;
 857 }
 858
 859 static inline int security_kernel_module_request(char *kmod_name)
 860 {
 861         return 0;
 862 }
 863
 864 static inline int security_kernel_module_from_file(struct file *file)
 865 {
 866         return 0;
 867 }
 868
 869 static inline int security_task_fix_setuid(struct cred *new,
 870                                            const struct cred *old,
 871                                            int flags)
 872 {
 873         return cap_task_fix_setuid(new, old, flags);
 874 }
 875
 876 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
 877 {
 878         return 0;
 879 }
 880
 881 static inline int security_task_getpgid(struct task_struct *p)
 882 {
 883         return 0;
 884 }
 885
 886 static inline int security_task_getsid(struct task_struct *p)
 887 {
 888         return 0;
 889 }
 890
 891 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
 892 {
 893         *secid = 0;
 894 }
 895
 896 static inline int security_task_setnice(struct task_struct *p, int nice)
 897 {
 898         return cap_task_setnice(p, nice);
 899 }
 900
 901 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
 902 {
 903         return cap_task_setioprio(p, ioprio);
 904 }
 905
 906 static inline int security_task_getioprio(struct task_struct *p)
 907 {
 908         return 0;
 909 }
 910
 911 static inline int security_task_setrlimit(struct task_struct *p,
 912                                           unsigned int resource,
 913                                           struct rlimit *new_rlim)
 914 {
 915         return 0;
 916 }
 917
 918 static inline int security_task_setscheduler(struct task_struct *p)
 919 {
 920         return cap_task_setscheduler(p);
 921 }
 922
 923 static inline int security_task_getscheduler(struct task_struct *p)
 924 {
 925         return 0;
 926 }
 927
 928 static inline int security_task_movememory(struct task_struct *p)
 929 {
 930         return 0;
 931 }
 932
 933 static inline int security_task_kill(struct task_struct *p,
 934                                      struct siginfo *info, int sig,
 935                                      u32 secid)
 936 {
 937         return 0;
 938 }
 939
 940 static inline int security_task_wait(struct task_struct *p)
 941 {
 942         return 0;
 943 }
 944
 945 static inline int security_task_prctl(int option, unsigned long arg2,
 946                                       unsigned long arg3,
 947                                       unsigned long arg4,
 948                                       unsigned long arg5)
 949 {
 950         return cap_task_prctl(option, arg2, arg3, arg4, arg5);
 951 }
 952
 953 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
 954 { }
 955
 956 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
 957                                           short flag)
 958 {
 959         return 0;
 960 }
 961
 962 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
 963 {
 964         *secid = 0;
 965 }
 966
 967 static inline int security_msg_msg_alloc(struct msg_msg *msg)
 968 {
 969         return 0;
 970 }
 971
 972 static inline void security_msg_msg_free(struct msg_msg *msg)
 973 { }
 974
 975 static inline int security_msg_queue_alloc(struct msg_queue *msq)
 976 {
 977         return 0;
 978 }
 979
 980 static inline void security_msg_queue_free(struct msg_queue *msq)
 981 { }
 982
 983 static inline int security_msg_queue_associate(struct msg_queue *msq,
 984                                                int msqflg)
 985 {
 986         return 0;
 987 }
 988
 989 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
 990 {
 991         return 0;
 992 }
 993
 994 static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
 995                                             struct msg_msg *msg, int msqflg)
 996 {
 997         return 0;
 998 }
 999
1000 static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
1001                                             struct msg_msg *msg,
1002                                             struct task_struct *target,
1003                                             long type, int mode)
1004 {
1005         return 0;
1006 }
1007
1008 static inline int security_shm_alloc(struct shmid_kernel *shp)
1009 {
1010         return 0;
1011 }
1012
1013 static inline void security_shm_free(struct shmid_kernel *shp)
1014 { }
1015
1016 static inline int security_shm_associate(struct shmid_kernel *shp,
1017                                          int shmflg)
1018 {
1019         return 0;
1020 }
1021
1022 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
1023 {
1024         return 0;
1025 }
1026
1027 static inline int security_shm_shmat(struct shmid_kernel *shp,
1028                                      char __user *shmaddr, int shmflg)
1029 {
1030         return 0;
1031 }
1032
1033 static inline int security_sem_alloc(struct sem_array *sma)
1034 {
1035         return 0;
1036 }
1037
1038 static inline void security_sem_free(struct sem_array *sma)
1039 { }
1040
1041 static inline int security_sem_associate(struct sem_array *sma, int semflg)
1042 {
1043         return 0;
1044 }
1045
1046 static inline int security_sem_semctl(struct sem_array *sma, int cmd)
1047 {
1048         return 0;
1049 }
1050
1051 static inline int security_sem_semop(struct sem_array *sma,
1052                                      struct sembuf *sops, unsigned nsops,
1053                                      int alter)
1054 {
1055         return 0;
1056 }
1057
1058 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1059 { }
1060
1061 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
1062 {
1063         return -EINVAL;
1064 }
1065
1066 static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
1067 {
1068         return -EINVAL;
1069 }
1070
1071 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1072 {
1073         return 0;
1074 }
1075
1076 static inline int security_ismaclabel(const char *name)
1077 {
1078         return 0;
1079 }
1080
1081 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1082 {
1083         return -EOPNOTSUPP;
1084 }
1085
1086 static inline int security_secctx_to_secid(const char *secdata,
1087                                            u32 seclen,
1088                                            u32 *secid)
1089 {
1090         return -EOPNOTSUPP;
1091 }
1092
1093 static inline void security_release_secctx(char *secdata, u32 seclen)
1094 {
1095 }
1096
1097 static inline void security_inode_invalidate_secctx(struct inode *inode)
1098 {
1099 }
1100
1101 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1102 {
1103         return -EOPNOTSUPP;
1104 }
1105 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1106 {
1107         return -EOPNOTSUPP;
1108 }
1109 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1110 {
1111         return -EOPNOTSUPP;
1112 }
1113 #endif  /* CONFIG_SECURITY */
1114
1115 #ifdef CONFIG_SECURITY_NETWORK
1116
1117 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
1118 int security_unix_may_send(struct socket *sock,  struct socket *other);
1119 int security_socket_create(int family, int type, int protocol, int kern);
1120 int security_socket_post_create(struct socket *sock, int family,
1121                                 int type, int protocol, int kern);
1122 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
1123 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
1124 int security_socket_listen(struct socket *sock, int backlog);
1125 int security_socket_accept(struct socket *sock, struct socket *newsock);
1126 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
1127 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1128                             int size, int flags);
1129 int security_socket_getsockname(struct socket *sock);
1130 int security_socket_getpeername(struct socket *sock);
1131 int security_socket_getsockopt(struct socket *sock, int level, int optname);
1132 int security_socket_setsockopt(struct socket *sock, int level, int optname);
1133 int security_socket_shutdown(struct socket *sock, int how);
1134 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
1135 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1136                                       int __user *optlen, unsigned len);
1137 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
1138 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
1139 void security_sk_free(struct sock *sk);
1140 void security_sk_clone(const struct sock *sk, struct sock *newsk);
1141 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
1142 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
1143 void security_sock_graft(struct sock*sk, struct socket *parent);
1144 int security_inet_conn_request(struct sock *sk,
1145                         struct sk_buff *skb, struct request_sock *req);
1146 void security_inet_csk_clone(struct sock *newsk,
1147                         const struct request_sock *req);
1148 void security_inet_conn_established(struct sock *sk,
1149                         struct sk_buff *skb);
1150 int security_secmark_relabel_packet(u32 secid);
1151 void security_secmark_refcount_inc(void);
1152 void security_secmark_refcount_dec(void);
1153 int security_tun_dev_alloc_security(void **security);
1154 void security_tun_dev_free_security(void *security);
1155 int security_tun_dev_create(void);
1156 int security_tun_dev_attach_queue(void *security);
1157 int security_tun_dev_attach(struct sock *sk, void *security);
1158 int security_tun_dev_open(void *security);
1159
1160 #else   /* CONFIG_SECURITY_NETWORK */
1161 static inline int security_unix_stream_connect(struct sock *sock,
1162                                                struct sock *other,
1163                                                struct sock *newsk)
1164 {
1165         return 0;
1166 }
1167
1168 static inline int security_unix_may_send(struct socket *sock,
1169                                          struct socket *other)
1170 {
1171         return 0;
1172 }
1173
1174 static inline int security_socket_create(int family, int type,
1175                                          int protocol, int kern)
1176 {
1177         return 0;
1178 }
1179
1180 static inline int security_socket_post_create(struct socket *sock,
1181                                               int family,
1182                                               int type,
1183                                               int protocol, int kern)
1184 {
1185         return 0;
1186 }
1187
1188 static inline int security_socket_bind(struct socket *sock,
1189                                        struct sockaddr *address,
1190                                        int addrlen)
1191 {
1192         return 0;
1193 }
1194
1195 static inline int security_socket_connect(struct socket *sock,
1196                                           struct sockaddr *address,
1197                                           int addrlen)
1198 {
1199         return 0;
1200 }
1201
1202 static inline int security_socket_listen(struct socket *sock, int backlog)
1203 {
1204         return 0;
1205 }
1206
1207 static inline int security_socket_accept(struct socket *sock,
1208                                          struct socket *newsock)
1209 {
1210         return 0;
1211 }
1212
1213 static inline int security_socket_sendmsg(struct socket *sock,
1214                                           struct msghdr *msg, int size)
1215 {
1216         return 0;
1217 }
1218
1219 static inline int security_socket_recvmsg(struct socket *sock,
1220                                           struct msghdr *msg, int size,
1221                                           int flags)
1222 {
1223         return 0;
1224 }
1225
1226 static inline int security_socket_getsockname(struct socket *sock)
1227 {
1228         return 0;
1229 }
1230
1231 static inline int security_socket_getpeername(struct socket *sock)
1232 {
1233         return 0;
1234 }
1235
1236 static inline int security_socket_getsockopt(struct socket *sock,
1237                                              int level, int optname)
1238 {
1239         return 0;
1240 }
1241
1242 static inline int security_socket_setsockopt(struct socket *sock,
1243                                              int level, int optname)
1244 {
1245         return 0;
1246 }
1247
1248 static inline int security_socket_shutdown(struct socket *sock, int how)
1249 {
1250         return 0;
1251 }
1252 static inline int security_sock_rcv_skb(struct sock *sk,
1253                                         struct sk_buff *skb)
1254 {
1255         return 0;
1256 }
1257
1258 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1259                                                     int __user *optlen, unsigned len)
1260 {
1261         return -ENOPROTOOPT;
1262 }
1263
1264 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1265 {
1266         return -ENOPROTOOPT;
1267 }
1268
1269 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1270 {
1271         return 0;
1272 }
1273
1274 static inline void security_sk_free(struct sock *sk)
1275 {
1276 }
1277
1278 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
1279 {
1280 }
1281
1282 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1283 {
1284 }
1285
1286 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1287 {
1288 }
1289
1290 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
1291 {
1292 }
1293
1294 static inline int security_inet_conn_request(struct sock *sk,
1295                         struct sk_buff *skb, struct request_sock *req)
1296 {
1297         return 0;
1298 }
1299
1300 static inline void security_inet_csk_clone(struct sock *newsk,
1301                         const struct request_sock *req)
1302 {
1303 }
1304
1305 static inline void security_inet_conn_established(struct sock *sk,
1306                         struct sk_buff *skb)
1307 {
1308 }
1309
1310 static inline int security_secmark_relabel_packet(u32 secid)
1311 {
1312         return 0;
1313 }
1314
1315 static inline void security_secmark_refcount_inc(void)
1316 {
1317 }
1318
1319 static inline void security_secmark_refcount_dec(void)
1320 {
1321 }
1322
1323 static inline int security_tun_dev_alloc_security(void **security)
1324 {
1325         return 0;
1326 }
1327
1328 static inline void security_tun_dev_free_security(void *security)
1329 {
1330 }
1331
1332 static inline int security_tun_dev_create(void)
1333 {
1334         return 0;
1335 }
1336
1337 static inline int security_tun_dev_attach_queue(void *security)
1338 {
1339         return 0;
1340 }
1341
1342 static inline int security_tun_dev_attach(struct sock *sk, void *security)
1343 {
1344         return 0;
1345 }
1346
1347 static inline int security_tun_dev_open(void *security)
1348 {
1349         return 0;
1350 }
1351 #endif  /* CONFIG_SECURITY_NETWORK */
1352
1353 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1354
1355 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1356                                struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
1357 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
1358 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
1359 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
1360 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
1361 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1362                                       struct xfrm_sec_ctx *polsec, u32 secid);
1363 int security_xfrm_state_delete(struct xfrm_state *x);
1364 void security_xfrm_state_free(struct xfrm_state *x);
1365 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1366 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1367                                        struct xfrm_policy *xp,
1368                                        const struct flowi *fl);
1369 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
1370 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
1371
1372 #else   /* CONFIG_SECURITY_NETWORK_XFRM */
1373
1374 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1375                                              struct xfrm_user_sec_ctx *sec_ctx,
1376                                              gfp_t gfp)
1377 {
1378         return 0;
1379 }
1380
1381 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
1382 {
1383         return 0;
1384 }
1385
1386 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1387 {
1388 }
1389
1390 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1391 {
1392         return 0;
1393 }
1394
1395 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
1396                                         struct xfrm_user_sec_ctx *sec_ctx)
1397 {
1398         return 0;
1399 }
1400
1401 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1402                                         struct xfrm_sec_ctx *polsec, u32 secid)
1403 {
1404         return 0;
1405 }
1406
1407 static inline void security_xfrm_state_free(struct xfrm_state *x)
1408 {
1409 }
1410
1411 static inline int security_xfrm_state_delete(struct xfrm_state *x)
1412 {
1413         return 0;
1414 }
1415
1416 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1417 {
1418         return 0;
1419 }
1420
1421 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1422                         struct xfrm_policy *xp, const struct flowi *fl)
1423 {
1424         return 1;
1425 }
1426
1427 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1428 {
1429         return 0;
1430 }
1431
1432 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1433 {
1434 }
1435
1436 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1437
1438 #ifdef CONFIG_SECURITY_PATH
1439 int security_path_unlink(struct path *dir, struct dentry *dentry);
1440 int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode);
1441 int security_path_rmdir(struct path *dir, struct dentry *dentry);
1442 int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode,
1443                         unsigned int dev);
1444 int security_path_truncate(struct path *path);
1445 int security_path_symlink(struct path *dir, struct dentry *dentry,
1446                           const char *old_name);
1447 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
1448                        struct dentry *new_dentry);
1449 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
1450                          struct path *new_dir, struct dentry *new_dentry,
1451                          unsigned int flags);
1452 int security_path_chmod(struct path *path, umode_t mode);
1453 int security_path_chown(struct path *path, kuid_t uid, kgid_t gid);
1454 int security_path_chroot(struct path *path);
1455 #else   /* CONFIG_SECURITY_PATH */
1456 static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
1457 {
1458         return 0;
1459 }
1460
1461 static inline int security_path_mkdir(struct path *dir, struct dentry *dentry,
1462                                       umode_t mode)
1463 {
1464         return 0;
1465 }
1466
1467 static inline int security_path_rmdir(struct path *dir, struct dentry *dentry)
1468 {
1469         return 0;
1470 }
1471
1472 static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
1473                                       umode_t mode, unsigned int dev)
1474 {
1475         return 0;
1476 }
1477
1478 static inline int security_path_truncate(struct path *path)
1479 {
1480         return 0;
1481 }
1482
1483 static inline int security_path_symlink(struct path *dir, struct dentry *dentry,
1484                                         const char *old_name)
1485 {
1486         return 0;
1487 }
1488
1489 static inline int security_path_link(struct dentry *old_dentry,
1490                                      struct path *new_dir,
1491                                      struct dentry *new_dentry)
1492 {
1493         return 0;
1494 }
1495
1496 static inline int security_path_rename(struct path *old_dir,
1497                                        struct dentry *old_dentry,
1498                                        struct path *new_dir,
1499                                        struct dentry *new_dentry,
1500                                        unsigned int flags)
1501 {
1502         return 0;
1503 }
1504
1505 static inline int security_path_chmod(struct path *path, umode_t mode)
1506 {
1507         return 0;
1508 }
1509
1510 static inline int security_path_chown(struct path *path, kuid_t uid, kgid_t gid)
1511 {
1512         return 0;
1513 }
1514
1515 static inline int security_path_chroot(struct path *path)
1516 {
1517         return 0;
1518 }
1519 #endif  /* CONFIG_SECURITY_PATH */
1520
1521 #ifdef CONFIG_KEYS
1522 #ifdef CONFIG_SECURITY
1523
1524 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
1525 void security_key_free(struct key *key);
1526 int security_key_permission(key_ref_t key_ref,
1527                             const struct cred *cred, unsigned perm);
1528 int security_key_getsecurity(struct key *key, char **_buffer);
1529
1530 #else
1531
1532 static inline int security_key_alloc(struct key *key,
1533                                      const struct cred *cred,
1534                                      unsigned long flags)
1535 {
1536         return 0;
1537 }
1538
1539 static inline void security_key_free(struct key *key)
1540 {
1541 }
1542
1543 static inline int security_key_permission(key_ref_t key_ref,
1544                                           const struct cred *cred,
1545                                           unsigned perm)
1546 {
1547         return 0;
1548 }
1549
1550 static inline int security_key_getsecurity(struct key *key, char **_buffer)
1551 {
1552         *_buffer = NULL;
1553         return 0;
1554 }
1555
1556 #endif
1557 #endif /* CONFIG_KEYS */
1558
1559 #ifdef CONFIG_AUDIT
1560 #ifdef CONFIG_SECURITY
1561 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
1562 int security_audit_rule_known(struct audit_krule *krule);
1563 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1564                               struct audit_context *actx);
1565 void security_audit_rule_free(void *lsmrule);
1566
1567 #else
1568
1569 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
1570                                            void **lsmrule)
1571 {
1572         return 0;
1573 }
1574
1575 static inline int security_audit_rule_known(struct audit_krule *krule)
1576 {
1577         return 0;
1578 }
1579
1580 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
1581                                    void *lsmrule, struct audit_context *actx)
1582 {
1583         return 0;
1584 }
1585
1586 static inline void security_audit_rule_free(void *lsmrule)
1587 { }
1588
1589 #endif /* CONFIG_SECURITY */
1590 #endif /* CONFIG_AUDIT */
1591
1592 #ifdef CONFIG_SECURITYFS
1593
1594 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
1595                                              struct dentry *parent, void *data,
1596                                              const struct file_operations *fops);
1597 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
1598 extern void securityfs_remove(struct dentry *dentry);
1599
1600 #else /* CONFIG_SECURITYFS */
1601
1602 static inline struct dentry *securityfs_create_dir(const char *name,
1603                                                    struct dentry *parent)
1604 {
1605         return ERR_PTR(-ENODEV);
1606 }
1607
1608 static inline struct dentry *securityfs_create_file(const char *name,
1609                                                     umode_t mode,
1610                                                     struct dentry *parent,
1611                                                     void *data,
1612                                                     const struct file_operations *fops)
1613 {
1614         return ERR_PTR(-ENODEV);
1615 }
1616
1617 static inline void securityfs_remove(struct dentry *dentry)
1618 {}
1619
1620 #endif
1621
1622 #ifdef CONFIG_SECURITY
1623
1624 static inline char *alloc_secdata(void)
1625 {
1626         return (char *)get_zeroed_page(GFP_KERNEL);
1627 }
1628
1629 static inline void free_secdata(void *secdata)
1630 {
1631         free_page((unsigned long)secdata);
1632 }
1633
1634 #else
1635
1636 static inline char *alloc_secdata(void)
1637 {
1638         return (char *)1;
1639 }
1640
1641 static inline void free_secdata(void *secdata)
1642 { }
1643 #endif /* CONFIG_SECURITY */
1644
1645 #endif /* ! __LINUX_SECURITY_H */
1646