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/fs.h>
  28 #include <linux/slab.h>
  29 #include <linux/err.h>
  30 #include <linux/string.h>
  31 #include <linux/mm.h>
  32 #include <linux/fs.h>
  33
  34 struct linux_binprm;
  35 struct cred;
  36 struct rlimit;
  37 struct siginfo;
  38 struct sem_array;
  39 struct sembuf;
  40 struct kern_ipc_perm;
  41 struct audit_context;
  42 struct super_block;
  43 struct inode;
  44 struct dentry;
  45 struct file;
  46 struct vfsmount;
  47 struct path;
  48 struct qstr;
  49 struct iattr;
  50 struct fown_struct;
  51 struct file_operations;
  52 struct shmid_kernel;
  53 struct msg_msg;
  54 struct msg_queue;
  55 struct xattr;
  56 struct xfrm_sec_ctx;
  57 struct mm_struct;
  58
  59 /* If capable should audit the security request */
  60 #define SECURITY_CAP_NOAUDIT 0
  61 #define SECURITY_CAP_AUDIT 1
  62
  63 /* LSM Agnostic defines for sb_set_mnt_opts */
  64 #define SECURITY_LSM_NATIVE_LABELS      1
  65
  66 struct ctl_table;
  67 struct audit_krule;
  68 struct user_namespace;
  69 struct timezone;
  70
  71 /* These functions are in security/commoncap.c */
  72 extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
  73                        int cap, int audit);
  74 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz);
  75 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
  76 extern int cap_ptrace_traceme(struct task_struct *parent);
  77 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
  78 extern int cap_capset(struct cred *new, const struct cred *old,
  79                       const kernel_cap_t *effective,
  80                       const kernel_cap_t *inheritable,
  81                       const kernel_cap_t *permitted);
  82 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
  83 extern int cap_bprm_secureexec(struct linux_binprm *bprm);
  84 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
  85                               const void *value, size_t size, int flags);
  86 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
  87 extern int cap_inode_need_killpriv(struct dentry *dentry);
  88 extern int cap_inode_killpriv(struct dentry *dentry);
  89 extern int cap_mmap_addr(unsigned long addr);
  90 extern int cap_mmap_file(struct file *file, unsigned long reqprot,
  91                          unsigned long prot, unsigned long flags);
  92 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
  93 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
  94                           unsigned long arg4, unsigned long arg5);
  95 extern int cap_task_setscheduler(struct task_struct *p);
  96 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
  97 extern int cap_task_setnice(struct task_struct *p, int nice);
  98 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
  99
 100 struct msghdr;
 101 struct sk_buff;
 102 struct sock;
 103 struct sockaddr;
 104 struct socket;
 105 struct flowi;
 106 struct dst_entry;
 107 struct xfrm_selector;
 108 struct xfrm_policy;
 109 struct xfrm_state;
 110 struct xfrm_user_sec_ctx;
 111 struct seq_file;
 112
 113 #ifdef CONFIG_MMU
 114 extern unsigned long mmap_min_addr;
 115 extern unsigned long dac_mmap_min_addr;
 116 #else
 117 #define mmap_min_addr           0UL
 118 #define dac_mmap_min_addr       0UL
 119 #endif
 120
 121 /*
 122  * Values used in the task_security_ops calls
 123  */
 124 /* setuid or setgid, id0 == uid or gid */
 125 #define LSM_SETID_ID    1
 126
 127 /* setreuid or setregid, id0 == real, id1 == eff */
 128 #define LSM_SETID_RE    2
 129
 130 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
 131 #define LSM_SETID_RES   4
 132
 133 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
 134 #define LSM_SETID_FS    8
 135
 136 /* forward declares to avoid warnings */
 137 struct sched_param;
 138 struct request_sock;
 139
 140 /* bprm->unsafe reasons */
 141 #define LSM_UNSAFE_SHARE        1
 142 #define LSM_UNSAFE_PTRACE       2
 143 #define LSM_UNSAFE_PTRACE_CAP   4
 144 #define LSM_UNSAFE_NO_NEW_PRIVS 8
 145
 146 #ifdef CONFIG_MMU
 147 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
 148                                  void __user *buffer, size_t *lenp, loff_t *ppos);
 149 #endif
 150
 151 /* security_inode_init_security callback function to write xattrs */
 152 typedef int (*initxattrs) (struct inode *inode,
 153                            const struct xattr *xattr_array, void *fs_data);
 154
 155 #ifdef CONFIG_SECURITY
 156
 157 struct security_mnt_opts {
 158         char **mnt_opts;
 159         int *mnt_opts_flags;
 160         int num_mnt_opts;
 161 };
 162
 163 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
 164 {
 165         opts->mnt_opts = NULL;
 166         opts->mnt_opts_flags = NULL;
 167         opts->num_mnt_opts = 0;
 168 }
 169
 170 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
 171 {
 172         int i;
 173         if (opts->mnt_opts)
 174                 for (i = 0; i < opts->num_mnt_opts; i++)
 175                         kfree(opts->mnt_opts[i]);
 176         kfree(opts->mnt_opts);
 177         opts->mnt_opts = NULL;
 178         kfree(opts->mnt_opts_flags);
 179         opts->mnt_opts_flags = NULL;
 180         opts->num_mnt_opts = 0;
 181 }
 182
 183 /* prototypes */
 184 extern int security_init(void);
 185
 186 /* Security operations */
 187 int security_binder_set_context_mgr(struct task_struct *mgr);
 188 int security_binder_transaction(struct task_struct *from,
 189                                 struct task_struct *to);
 190 int security_binder_transfer_binder(struct task_struct *from,
 191                                     struct task_struct *to);
 192 int security_binder_transfer_file(struct task_struct *from,
 193                                   struct task_struct *to, struct file *file);
 194 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
 195 int security_ptrace_traceme(struct task_struct *parent);
 196 int security_capget(struct task_struct *target,
 197                     kernel_cap_t *effective,
 198                     kernel_cap_t *inheritable,
 199                     kernel_cap_t *permitted);
 200 int security_capset(struct cred *new, const struct cred *old,
 201                     const kernel_cap_t *effective,
 202                     const kernel_cap_t *inheritable,
 203                     const kernel_cap_t *permitted);
 204 int security_capable(const struct cred *cred, struct user_namespace *ns,
 205                         int cap);
 206 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
 207                              int cap);
 208 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
 209 int security_quota_on(struct dentry *dentry);
 210 int security_syslog(int type);
 211 int security_settime64(const struct timespec64 *ts, const struct timezone *tz);
 212 static inline int security_settime(const struct timespec *ts, const struct timezone *tz)
 213 {
 214         struct timespec64 ts64 = timespec_to_timespec64(*ts);
 215
 216         return security_settime64(&ts64, tz);
 217 }
 218 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
 219 int security_bprm_set_creds(struct linux_binprm *bprm);
 220 int security_bprm_check(struct linux_binprm *bprm);
 221 void security_bprm_committing_creds(struct linux_binprm *bprm);
 222 void security_bprm_committed_creds(struct linux_binprm *bprm);
 223 int security_bprm_secureexec(struct linux_binprm *bprm);
 224 int security_sb_alloc(struct super_block *sb);
 225 void security_sb_free(struct super_block *sb);
 226 int security_sb_copy_data(char *orig, char *copy);
 227 int security_sb_remount(struct super_block *sb, void *data);
 228 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
 229 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
 230 int security_sb_statfs(struct dentry *dentry);
 231 int security_sb_mount(const char *dev_name, const struct path *path,
 232                       const char *type, unsigned long flags, void *data);
 233 int security_sb_umount(struct vfsmount *mnt, int flags);
 234 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path);
 235 int security_sb_set_mnt_opts(struct super_block *sb,
 236                                 struct security_mnt_opts *opts,
 237                                 unsigned long kern_flags,
 238                                 unsigned long *set_kern_flags);
 239 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 240                                 struct super_block *newsb);
 241 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
 242 int security_dentry_init_security(struct dentry *dentry, int mode,
 243                                         const struct qstr *name, void **ctx,
 244                                         u32 *ctxlen);
 245 int security_dentry_create_files_as(struct dentry *dentry, int mode,
 246                                         struct qstr *name,
 247                                         const struct cred *old,
 248                                         struct cred *new);
 249
 250 int security_inode_alloc(struct inode *inode);
 251 void security_inode_free(struct inode *inode);
 252 int security_inode_init_security(struct inode *inode, struct inode *dir,
 253                                  const struct qstr *qstr,
 254                                  initxattrs initxattrs, void *fs_data);
 255 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
 256                                      const struct qstr *qstr, const char **name,
 257                                      void **value, size_t *len);
 258 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
 259 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 260                          struct dentry *new_dentry);
 261 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
 262 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 263                            const char *old_name);
 264 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
 265 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
 266 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
 267 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 268                           struct inode *new_dir, struct dentry *new_dentry,
 269                           unsigned int flags);
 270 int security_inode_readlink(struct dentry *dentry);
 271 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
 272                                bool rcu);
 273 int security_inode_permission(struct inode *inode, int mask);
 274 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
 275 int security_inode_getattr(const struct path *path);
 276 int security_inode_setxattr(struct dentry *dentry, const char *name,
 277                             const void *value, size_t size, int flags);
 278 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 279                                   const void *value, size_t size, int flags);
 280 int security_inode_getxattr(struct dentry *dentry, const char *name);
 281 int security_inode_listxattr(struct dentry *dentry);
 282 int security_inode_removexattr(struct dentry *dentry, const char *name);
 283 int security_inode_need_killpriv(struct dentry *dentry);
 284 int security_inode_killpriv(struct dentry *dentry);
 285 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc);
 286 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
 287 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
 288 void security_inode_getsecid(struct inode *inode, u32 *secid);
 289 int security_inode_copy_up(struct dentry *src, struct cred **new);
 290 int security_inode_copy_up_xattr(const char *name);
 291 int security_file_permission(struct file *file, int mask);
 292 int security_file_alloc(struct file *file);
 293 void security_file_free(struct file *file);
 294 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
 295 int security_mmap_file(struct file *file, unsigned long prot,
 296                         unsigned long flags);
 297 int security_mmap_addr(unsigned long addr);
 298 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 299                            unsigned long prot);
 300 int security_file_lock(struct file *file, unsigned int cmd);
 301 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
 302 void security_file_set_fowner(struct file *file);
 303 int security_file_send_sigiotask(struct task_struct *tsk,
 304                                  struct fown_struct *fown, int sig);
 305 int security_file_receive(struct file *file);
 306 int security_file_open(struct file *file, const struct cred *cred);
 307 int security_task_create(unsigned long clone_flags);
 308 void security_task_free(struct task_struct *task);
 309 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
 310 void security_cred_free(struct cred *cred);
 311 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
 312 void security_transfer_creds(struct cred *new, const struct cred *old);
 313 int security_kernel_act_as(struct cred *new, u32 secid);
 314 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
 315 int security_kernel_module_request(char *kmod_name);
 316 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id);
 317 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
 318                                    enum kernel_read_file_id id);
 319 int security_task_fix_setuid(struct cred *new, const struct cred *old,
 320                              int flags);
 321 int security_task_setpgid(struct task_struct *p, pid_t pgid);
 322 int security_task_getpgid(struct task_struct *p);
 323 int security_task_getsid(struct task_struct *p);
 324 void security_task_getsecid(struct task_struct *p, u32 *secid);
 325 int security_task_setnice(struct task_struct *p, int nice);
 326 int security_task_setioprio(struct task_struct *p, int ioprio);
 327 int security_task_getioprio(struct task_struct *p);
 328 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
 329                 struct rlimit *new_rlim);
 330 int security_task_setscheduler(struct task_struct *p);
 331 int security_task_getscheduler(struct task_struct *p);
 332 int security_task_movememory(struct task_struct *p);
 333 int security_task_kill(struct task_struct *p, struct siginfo *info,
 334                         int sig, u32 secid);
 335 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 336                         unsigned long arg4, unsigned long arg5);
 337 void security_task_to_inode(struct task_struct *p, struct inode *inode);
 338 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
 339 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
 340 int security_msg_msg_alloc(struct msg_msg *msg);
 341 void security_msg_msg_free(struct msg_msg *msg);
 342 int security_msg_queue_alloc(struct msg_queue *msq);
 343 void security_msg_queue_free(struct msg_queue *msq);
 344 int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
 345 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
 346 int security_msg_queue_msgsnd(struct msg_queue *msq,
 347                               struct msg_msg *msg, int msqflg);
 348 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
 349                               struct task_struct *target, long type, int mode);
 350 int security_shm_alloc(struct shmid_kernel *shp);
 351 void security_shm_free(struct shmid_kernel *shp);
 352 int security_shm_associate(struct shmid_kernel *shp, int shmflg);
 353 int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
 354 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
 355 int security_sem_alloc(struct sem_array *sma);
 356 void security_sem_free(struct sem_array *sma);
 357 int security_sem_associate(struct sem_array *sma, int semflg);
 358 int security_sem_semctl(struct sem_array *sma, int cmd);
 359 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
 360                         unsigned nsops, int alter);
 361 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
 362 int security_getprocattr(struct task_struct *p, char *name, char **value);
 363 int security_setprocattr(const char *name, void *value, size_t size);
 364 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
 365 int security_ismaclabel(const char *name);
 366 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
 367 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
 368 void security_release_secctx(char *secdata, u32 seclen);
 369
 370 void security_inode_invalidate_secctx(struct inode *inode);
 371 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
 372 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
 373 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
 374 #else /* CONFIG_SECURITY */
 375 struct security_mnt_opts {
 376 };
 377
 378 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
 379 {
 380 }
 381
 382 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
 383 {
 384 }
 385
 386 /*
 387  * This is the default capabilities functionality.  Most of these functions
 388  * are just stubbed out, but a few must call the proper capable code.
 389  */
 390
 391 static inline int security_init(void)
 392 {
 393         return 0;
 394 }
 395
 396 static inline int security_binder_set_context_mgr(struct task_struct *mgr)
 397 {
 398         return 0;
 399 }
 400
 401 static inline int security_binder_transaction(struct task_struct *from,
 402                                               struct task_struct *to)
 403 {
 404         return 0;
 405 }
 406
 407 static inline int security_binder_transfer_binder(struct task_struct *from,
 408                                                   struct task_struct *to)
 409 {
 410         return 0;
 411 }
 412
 413 static inline int security_binder_transfer_file(struct task_struct *from,
 414                                                 struct task_struct *to,
 415                                                 struct file *file)
 416 {
 417         return 0;
 418 }
 419
 420 static inline int security_ptrace_access_check(struct task_struct *child,
 421                                              unsigned int mode)
 422 {
 423         return cap_ptrace_access_check(child, mode);
 424 }
 425
 426 static inline int security_ptrace_traceme(struct task_struct *parent)
 427 {
 428         return cap_ptrace_traceme(parent);
 429 }
 430
 431 static inline int security_capget(struct task_struct *target,
 432                                    kernel_cap_t *effective,
 433                                    kernel_cap_t *inheritable,
 434                                    kernel_cap_t *permitted)
 435 {
 436         return cap_capget(target, effective, inheritable, permitted);
 437 }
 438
 439 static inline int security_capset(struct cred *new,
 440                                    const struct cred *old,
 441                                    const kernel_cap_t *effective,
 442                                    const kernel_cap_t *inheritable,
 443                                    const kernel_cap_t *permitted)
 444 {
 445         return cap_capset(new, old, effective, inheritable, permitted);
 446 }
 447
 448 static inline int security_capable(const struct cred *cred,
 449                                    struct user_namespace *ns, int cap)
 450 {
 451         return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT);
 452 }
 453
 454 static inline int security_capable_noaudit(const struct cred *cred,
 455                                            struct user_namespace *ns, int cap) {
 456         return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
 457 }
 458
 459 static inline int security_quotactl(int cmds, int type, int id,
 460                                      struct super_block *sb)
 461 {
 462         return 0;
 463 }
 464
 465 static inline int security_quota_on(struct dentry *dentry)
 466 {
 467         return 0;
 468 }
 469
 470 static inline int security_syslog(int type)
 471 {
 472         return 0;
 473 }
 474
 475 static inline int security_settime64(const struct timespec64 *ts,
 476                                      const struct timezone *tz)
 477 {
 478         return cap_settime(ts, tz);
 479 }
 480
 481 static inline int security_settime(const struct timespec *ts,
 482                                    const struct timezone *tz)
 483 {
 484         struct timespec64 ts64 = timespec_to_timespec64(*ts);
 485
 486         return cap_settime(&ts64, tz);
 487 }
 488
 489 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 490 {
 491         return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages));
 492 }
 493
 494 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
 495 {
 496         return cap_bprm_set_creds(bprm);
 497 }
 498
 499 static inline int security_bprm_check(struct linux_binprm *bprm)
 500 {
 501         return 0;
 502 }
 503
 504 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
 505 {
 506 }
 507
 508 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
 509 {
 510 }
 511
 512 static inline int security_bprm_secureexec(struct linux_binprm *bprm)
 513 {
 514         return cap_bprm_secureexec(bprm);
 515 }
 516
 517 static inline int security_sb_alloc(struct super_block *sb)
 518 {
 519         return 0;
 520 }
 521
 522 static inline void security_sb_free(struct super_block *sb)
 523 { }
 524
 525 static inline int security_sb_copy_data(char *orig, char *copy)
 526 {
 527         return 0;
 528 }
 529
 530 static inline int security_sb_remount(struct super_block *sb, void *data)
 531 {
 532         return 0;
 533 }
 534
 535 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
 536 {
 537         return 0;
 538 }
 539
 540 static inline int security_sb_show_options(struct seq_file *m,
 541                                            struct super_block *sb)
 542 {
 543         return 0;
 544 }
 545
 546 static inline int security_sb_statfs(struct dentry *dentry)
 547 {
 548         return 0;
 549 }
 550
 551 static inline int security_sb_mount(const char *dev_name, const struct path *path,
 552                                     const char *type, unsigned long flags,
 553                                     void *data)
 554 {
 555         return 0;
 556 }
 557
 558 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
 559 {
 560         return 0;
 561 }
 562
 563 static inline int security_sb_pivotroot(const struct path *old_path,
 564                                         const struct path *new_path)
 565 {
 566         return 0;
 567 }
 568
 569 static inline int security_sb_set_mnt_opts(struct super_block *sb,
 570                                            struct security_mnt_opts *opts,
 571                                            unsigned long kern_flags,
 572                                            unsigned long *set_kern_flags)
 573 {
 574         return 0;
 575 }
 576
 577 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 578                                               struct super_block *newsb)
 579 {
 580         return 0;
 581 }
 582
 583 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
 584 {
 585         return 0;
 586 }
 587
 588 static inline int security_inode_alloc(struct inode *inode)
 589 {
 590         return 0;
 591 }
 592
 593 static inline void security_inode_free(struct inode *inode)
 594 { }
 595
 596 static inline int security_dentry_init_security(struct dentry *dentry,
 597                                                  int mode,
 598                                                  const struct qstr *name,
 599                                                  void **ctx,
 600                                                  u32 *ctxlen)
 601 {
 602         return -EOPNOTSUPP;
 603 }
 604
 605 static inline int security_dentry_create_files_as(struct dentry *dentry,
 606                                                   int mode, struct qstr *name,
 607                                                   const struct cred *old,
 608                                                   struct cred *new)
 609 {
 610         return 0;
 611 }
 612
 613
 614 static inline int security_inode_init_security(struct inode *inode,
 615                                                 struct inode *dir,
 616                                                 const struct qstr *qstr,
 617                                                 const initxattrs xattrs,
 618                                                 void *fs_data)
 619 {
 620         return 0;
 621 }
 622
 623 static inline int security_old_inode_init_security(struct inode *inode,
 624                                                    struct inode *dir,
 625                                                    const struct qstr *qstr,
 626                                                    const char **name,
 627                                                    void **value, size_t *len)
 628 {
 629         return -EOPNOTSUPP;
 630 }
 631
 632 static inline int security_inode_create(struct inode *dir,
 633                                          struct dentry *dentry,
 634                                          umode_t mode)
 635 {
 636         return 0;
 637 }
 638
 639 static inline int security_inode_link(struct dentry *old_dentry,
 640                                        struct inode *dir,
 641                                        struct dentry *new_dentry)
 642 {
 643         return 0;
 644 }
 645
 646 static inline int security_inode_unlink(struct inode *dir,
 647                                          struct dentry *dentry)
 648 {
 649         return 0;
 650 }
 651
 652 static inline int security_inode_symlink(struct inode *dir,
 653                                           struct dentry *dentry,
 654                                           const char *old_name)
 655 {
 656         return 0;
 657 }
 658
 659 static inline int security_inode_mkdir(struct inode *dir,
 660                                         struct dentry *dentry,
 661                                         int mode)
 662 {
 663         return 0;
 664 }
 665
 666 static inline int security_inode_rmdir(struct inode *dir,
 667                                         struct dentry *dentry)
 668 {
 669         return 0;
 670 }
 671
 672 static inline int security_inode_mknod(struct inode *dir,
 673                                         struct dentry *dentry,
 674                                         int mode, dev_t dev)
 675 {
 676         return 0;
 677 }
 678
 679 static inline int security_inode_rename(struct inode *old_dir,
 680                                          struct dentry *old_dentry,
 681                                          struct inode *new_dir,
 682                                          struct dentry *new_dentry,
 683                                          unsigned int flags)
 684 {
 685         return 0;
 686 }
 687
 688 static inline int security_inode_readlink(struct dentry *dentry)
 689 {
 690         return 0;
 691 }
 692
 693 static inline int security_inode_follow_link(struct dentry *dentry,
 694                                              struct inode *inode,
 695                                              bool rcu)
 696 {
 697         return 0;
 698 }
 699
 700 static inline int security_inode_permission(struct inode *inode, int mask)
 701 {
 702         return 0;
 703 }
 704
 705 static inline int security_inode_setattr(struct dentry *dentry,
 706                                           struct iattr *attr)
 707 {
 708         return 0;
 709 }
 710
 711 static inline int security_inode_getattr(const struct path *path)
 712 {
 713         return 0;
 714 }
 715
 716 static inline int security_inode_setxattr(struct dentry *dentry,
 717                 const char *name, const void *value, size_t size, int flags)
 718 {
 719         return cap_inode_setxattr(dentry, name, value, size, flags);
 720 }
 721
 722 static inline void security_inode_post_setxattr(struct dentry *dentry,
 723                 const char *name, const void *value, size_t size, int flags)
 724 { }
 725
 726 static inline int security_inode_getxattr(struct dentry *dentry,
 727                         const char *name)
 728 {
 729         return 0;
 730 }
 731
 732 static inline int security_inode_listxattr(struct dentry *dentry)
 733 {
 734         return 0;
 735 }
 736
 737 static inline int security_inode_removexattr(struct dentry *dentry,
 738                         const char *name)
 739 {
 740         return cap_inode_removexattr(dentry, name);
 741 }
 742
 743 static inline int security_inode_need_killpriv(struct dentry *dentry)
 744 {
 745         return cap_inode_need_killpriv(dentry);
 746 }
 747
 748 static inline int security_inode_killpriv(struct dentry *dentry)
 749 {
 750         return cap_inode_killpriv(dentry);
 751 }
 752
 753 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
 754 {
 755         return -EOPNOTSUPP;
 756 }
 757
 758 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 759 {
 760         return -EOPNOTSUPP;
 761 }
 762
 763 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 764 {
 765         return 0;
 766 }
 767
 768 static inline void security_inode_getsecid(struct inode *inode, u32 *secid)
 769 {
 770         *secid = 0;
 771 }
 772
 773 static inline int security_inode_copy_up(struct dentry *src, struct cred **new)
 774 {
 775         return 0;
 776 }
 777
 778 static inline int security_inode_copy_up_xattr(const char *name)
 779 {
 780         return -EOPNOTSUPP;
 781 }
 782
 783 static inline int security_file_permission(struct file *file, int mask)
 784 {
 785         return 0;
 786 }
 787
 788 static inline int security_file_alloc(struct file *file)
 789 {
 790         return 0;
 791 }
 792
 793 static inline void security_file_free(struct file *file)
 794 { }
 795
 796 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
 797                                       unsigned long arg)
 798 {
 799         return 0;
 800 }
 801
 802 static inline int security_mmap_file(struct file *file, unsigned long prot,
 803                                      unsigned long flags)
 804 {
 805         return 0;
 806 }
 807
 808 static inline int security_mmap_addr(unsigned long addr)
 809 {
 810         return cap_mmap_addr(addr);
 811 }
 812
 813 static inline int security_file_mprotect(struct vm_area_struct *vma,
 814                                          unsigned long reqprot,
 815                                          unsigned long prot)
 816 {
 817         return 0;
 818 }
 819
 820 static inline int security_file_lock(struct file *file, unsigned int cmd)
 821 {
 822         return 0;
 823 }
 824
 825 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
 826                                       unsigned long arg)
 827 {
 828         return 0;
 829 }
 830
 831 static inline void security_file_set_fowner(struct file *file)
 832 {
 833         return;
 834 }
 835
 836 static inline int security_file_send_sigiotask(struct task_struct *tsk,
 837                                                struct fown_struct *fown,
 838                                                int sig)
 839 {
 840         return 0;
 841 }
 842
 843 static inline int security_file_receive(struct file *file)
 844 {
 845         return 0;
 846 }
 847
 848 static inline int security_file_open(struct file *file,
 849                                      const struct cred *cred)
 850 {
 851         return 0;
 852 }
 853
 854 static inline int security_task_create(unsigned long clone_flags)
 855 {
 856         return 0;
 857 }
 858
 859 static inline void security_task_free(struct task_struct *task)
 860 { }
 861
 862 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 863 {
 864         return 0;
 865 }
 866
 867 static inline void security_cred_free(struct cred *cred)
 868 { }
 869
 870 static inline int security_prepare_creds(struct cred *new,
 871                                          const struct cred *old,
 872                                          gfp_t gfp)
 873 {
 874         return 0;
 875 }
 876
 877 static inline void security_transfer_creds(struct cred *new,
 878                                            const struct cred *old)
 879 {
 880 }
 881
 882 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
 883 {
 884         return 0;
 885 }
 886
 887 static inline int security_kernel_create_files_as(struct cred *cred,
 888                                                   struct inode *inode)
 889 {
 890         return 0;
 891 }
 892
 893 static inline int security_kernel_module_request(char *kmod_name)
 894 {
 895         return 0;
 896 }
 897
 898 static inline int security_kernel_read_file(struct file *file,
 899                                             enum kernel_read_file_id id)
 900 {
 901         return 0;
 902 }
 903
 904 static inline int security_kernel_post_read_file(struct file *file,
 905                                                  char *buf, loff_t size,
 906                                                  enum kernel_read_file_id id)
 907 {
 908         return 0;
 909 }
 910
 911 static inline int security_task_fix_setuid(struct cred *new,
 912                                            const struct cred *old,
 913                                            int flags)
 914 {
 915         return cap_task_fix_setuid(new, old, flags);
 916 }
 917
 918 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
 919 {
 920         return 0;
 921 }
 922
 923 static inline int security_task_getpgid(struct task_struct *p)
 924 {
 925         return 0;
 926 }
 927
 928 static inline int security_task_getsid(struct task_struct *p)
 929 {
 930         return 0;
 931 }
 932
 933 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
 934 {
 935         *secid = 0;
 936 }
 937
 938 static inline int security_task_setnice(struct task_struct *p, int nice)
 939 {
 940         return cap_task_setnice(p, nice);
 941 }
 942
 943 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
 944 {
 945         return cap_task_setioprio(p, ioprio);
 946 }
 947
 948 static inline int security_task_getioprio(struct task_struct *p)
 949 {
 950         return 0;
 951 }
 952
 953 static inline int security_task_setrlimit(struct task_struct *p,
 954                                           unsigned int resource,
 955                                           struct rlimit *new_rlim)
 956 {
 957         return 0;
 958 }
 959
 960 static inline int security_task_setscheduler(struct task_struct *p)
 961 {
 962         return cap_task_setscheduler(p);
 963 }
 964
 965 static inline int security_task_getscheduler(struct task_struct *p)
 966 {
 967         return 0;
 968 }
 969
 970 static inline int security_task_movememory(struct task_struct *p)
 971 {
 972         return 0;
 973 }
 974
 975 static inline int security_task_kill(struct task_struct *p,
 976                                      struct siginfo *info, int sig,
 977                                      u32 secid)
 978 {
 979         return 0;
 980 }
 981
 982 static inline int security_task_prctl(int option, unsigned long arg2,
 983                                       unsigned long arg3,
 984                                       unsigned long arg4,
 985                                       unsigned long arg5)
 986 {
 987         return cap_task_prctl(option, arg2, arg3, arg4, arg5);
 988 }
 989
 990 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
 991 { }
 992
 993 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
 994                                           short flag)
 995 {
 996         return 0;
 997 }
 998
 999 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1000 {
1001         *secid = 0;
1002 }
1003
1004 static inline int security_msg_msg_alloc(struct msg_msg *msg)
1005 {
1006         return 0;
1007 }
1008
1009 static inline void security_msg_msg_free(struct msg_msg *msg)
1010 { }
1011
1012 static inline int security_msg_queue_alloc(struct msg_queue *msq)
1013 {
1014         return 0;
1015 }
1016
1017 static inline void security_msg_queue_free(struct msg_queue *msq)
1018 { }
1019
1020 static inline int security_msg_queue_associate(struct msg_queue *msq,
1021                                                int msqflg)
1022 {
1023         return 0;
1024 }
1025
1026 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
1027 {
1028         return 0;
1029 }
1030
1031 static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
1032                                             struct msg_msg *msg, int msqflg)
1033 {
1034         return 0;
1035 }
1036
1037 static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
1038                                             struct msg_msg *msg,
1039                                             struct task_struct *target,
1040                                             long type, int mode)
1041 {
1042         return 0;
1043 }
1044
1045 static inline int security_shm_alloc(struct shmid_kernel *shp)
1046 {
1047         return 0;
1048 }
1049
1050 static inline void security_shm_free(struct shmid_kernel *shp)
1051 { }
1052
1053 static inline int security_shm_associate(struct shmid_kernel *shp,
1054                                          int shmflg)
1055 {
1056         return 0;
1057 }
1058
1059 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
1060 {
1061         return 0;
1062 }
1063
1064 static inline int security_shm_shmat(struct shmid_kernel *shp,
1065                                      char __user *shmaddr, int shmflg)
1066 {
1067         return 0;
1068 }
1069
1070 static inline int security_sem_alloc(struct sem_array *sma)
1071 {
1072         return 0;
1073 }
1074
1075 static inline void security_sem_free(struct sem_array *sma)
1076 { }
1077
1078 static inline int security_sem_associate(struct sem_array *sma, int semflg)
1079 {
1080         return 0;
1081 }
1082
1083 static inline int security_sem_semctl(struct sem_array *sma, int cmd)
1084 {
1085         return 0;
1086 }
1087
1088 static inline int security_sem_semop(struct sem_array *sma,
1089                                      struct sembuf *sops, unsigned nsops,
1090                                      int alter)
1091 {
1092         return 0;
1093 }
1094
1095 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1096 { }
1097
1098 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
1099 {
1100         return -EINVAL;
1101 }
1102
1103 static inline int security_setprocattr(char *name, void *value, size_t size)
1104 {
1105         return -EINVAL;
1106 }
1107
1108 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1109 {
1110         return 0;
1111 }
1112
1113 static inline int security_ismaclabel(const char *name)
1114 {
1115         return 0;
1116 }
1117
1118 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1119 {
1120         return -EOPNOTSUPP;
1121 }
1122
1123 static inline int security_secctx_to_secid(const char *secdata,
1124                                            u32 seclen,
1125                                            u32 *secid)
1126 {
1127         return -EOPNOTSUPP;
1128 }
1129
1130 static inline void security_release_secctx(char *secdata, u32 seclen)
1131 {
1132 }
1133
1134 static inline void security_inode_invalidate_secctx(struct inode *inode)
1135 {
1136 }
1137
1138 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1139 {
1140         return -EOPNOTSUPP;
1141 }
1142 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1143 {
1144         return -EOPNOTSUPP;
1145 }
1146 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1147 {
1148         return -EOPNOTSUPP;
1149 }
1150 #endif  /* CONFIG_SECURITY */
1151
1152 #ifdef CONFIG_SECURITY_NETWORK
1153
1154 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
1155 int security_unix_may_send(struct socket *sock,  struct socket *other);
1156 int security_socket_create(int family, int type, int protocol, int kern);
1157 int security_socket_post_create(struct socket *sock, int family,
1158                                 int type, int protocol, int kern);
1159 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
1160 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
1161 int security_socket_listen(struct socket *sock, int backlog);
1162 int security_socket_accept(struct socket *sock, struct socket *newsock);
1163 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
1164 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1165                             int size, int flags);
1166 int security_socket_getsockname(struct socket *sock);
1167 int security_socket_getpeername(struct socket *sock);
1168 int security_socket_getsockopt(struct socket *sock, int level, int optname);
1169 int security_socket_setsockopt(struct socket *sock, int level, int optname);
1170 int security_socket_shutdown(struct socket *sock, int how);
1171 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
1172 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1173                                       int __user *optlen, unsigned len);
1174 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
1175 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
1176 void security_sk_free(struct sock *sk);
1177 void security_sk_clone(const struct sock *sk, struct sock *newsk);
1178 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
1179 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
1180 void security_sock_graft(struct sock*sk, struct socket *parent);
1181 int security_inet_conn_request(struct sock *sk,
1182                         struct sk_buff *skb, struct request_sock *req);
1183 void security_inet_csk_clone(struct sock *newsk,
1184                         const struct request_sock *req);
1185 void security_inet_conn_established(struct sock *sk,
1186                         struct sk_buff *skb);
1187 int security_secmark_relabel_packet(u32 secid);
1188 void security_secmark_refcount_inc(void);
1189 void security_secmark_refcount_dec(void);
1190 int security_tun_dev_alloc_security(void **security);
1191 void security_tun_dev_free_security(void *security);
1192 int security_tun_dev_create(void);
1193 int security_tun_dev_attach_queue(void *security);
1194 int security_tun_dev_attach(struct sock *sk, void *security);
1195 int security_tun_dev_open(void *security);
1196
1197 #else   /* CONFIG_SECURITY_NETWORK */
1198 static inline int security_unix_stream_connect(struct sock *sock,
1199                                                struct sock *other,
1200                                                struct sock *newsk)
1201 {
1202         return 0;
1203 }
1204
1205 static inline int security_unix_may_send(struct socket *sock,
1206                                          struct socket *other)
1207 {
1208         return 0;
1209 }
1210
1211 static inline int security_socket_create(int family, int type,
1212                                          int protocol, int kern)
1213 {
1214         return 0;
1215 }
1216
1217 static inline int security_socket_post_create(struct socket *sock,
1218                                               int family,
1219                                               int type,
1220                                               int protocol, int kern)
1221 {
1222         return 0;
1223 }
1224
1225 static inline int security_socket_bind(struct socket *sock,
1226                                        struct sockaddr *address,
1227                                        int addrlen)
1228 {
1229         return 0;
1230 }
1231
1232 static inline int security_socket_connect(struct socket *sock,
1233                                           struct sockaddr *address,
1234                                           int addrlen)
1235 {
1236         return 0;
1237 }
1238
1239 static inline int security_socket_listen(struct socket *sock, int backlog)
1240 {
1241         return 0;
1242 }
1243
1244 static inline int security_socket_accept(struct socket *sock,
1245                                          struct socket *newsock)
1246 {
1247         return 0;
1248 }
1249
1250 static inline int security_socket_sendmsg(struct socket *sock,
1251                                           struct msghdr *msg, int size)
1252 {
1253         return 0;
1254 }
1255
1256 static inline int security_socket_recvmsg(struct socket *sock,
1257                                           struct msghdr *msg, int size,
1258                                           int flags)
1259 {
1260         return 0;
1261 }
1262
1263 static inline int security_socket_getsockname(struct socket *sock)
1264 {
1265         return 0;
1266 }
1267
1268 static inline int security_socket_getpeername(struct socket *sock)
1269 {
1270         return 0;
1271 }
1272
1273 static inline int security_socket_getsockopt(struct socket *sock,
1274                                              int level, int optname)
1275 {
1276         return 0;
1277 }
1278
1279 static inline int security_socket_setsockopt(struct socket *sock,
1280                                              int level, int optname)
1281 {
1282         return 0;
1283 }
1284
1285 static inline int security_socket_shutdown(struct socket *sock, int how)
1286 {
1287         return 0;
1288 }
1289 static inline int security_sock_rcv_skb(struct sock *sk,
1290                                         struct sk_buff *skb)
1291 {
1292         return 0;
1293 }
1294
1295 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1296                                                     int __user *optlen, unsigned len)
1297 {
1298         return -ENOPROTOOPT;
1299 }
1300
1301 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1302 {
1303         return -ENOPROTOOPT;
1304 }
1305
1306 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1307 {
1308         return 0;
1309 }
1310
1311 static inline void security_sk_free(struct sock *sk)
1312 {
1313 }
1314
1315 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
1316 {
1317 }
1318
1319 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1320 {
1321 }
1322
1323 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1324 {
1325 }
1326
1327 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
1328 {
1329 }
1330
1331 static inline int security_inet_conn_request(struct sock *sk,
1332                         struct sk_buff *skb, struct request_sock *req)
1333 {
1334         return 0;
1335 }
1336
1337 static inline void security_inet_csk_clone(struct sock *newsk,
1338                         const struct request_sock *req)
1339 {
1340 }
1341
1342 static inline void security_inet_conn_established(struct sock *sk,
1343                         struct sk_buff *skb)
1344 {
1345 }
1346
1347 static inline int security_secmark_relabel_packet(u32 secid)
1348 {
1349         return 0;
1350 }
1351
1352 static inline void security_secmark_refcount_inc(void)
1353 {
1354 }
1355
1356 static inline void security_secmark_refcount_dec(void)
1357 {
1358 }
1359
1360 static inline int security_tun_dev_alloc_security(void **security)
1361 {
1362         return 0;
1363 }
1364
1365 static inline void security_tun_dev_free_security(void *security)
1366 {
1367 }
1368
1369 static inline int security_tun_dev_create(void)
1370 {
1371         return 0;
1372 }
1373
1374 static inline int security_tun_dev_attach_queue(void *security)
1375 {
1376         return 0;
1377 }
1378
1379 static inline int security_tun_dev_attach(struct sock *sk, void *security)
1380 {
1381         return 0;
1382 }
1383
1384 static inline int security_tun_dev_open(void *security)
1385 {
1386         return 0;
1387 }
1388 #endif  /* CONFIG_SECURITY_NETWORK */
1389
1390 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1391
1392 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1393                                struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
1394 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
1395 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
1396 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
1397 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
1398 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1399                                       struct xfrm_sec_ctx *polsec, u32 secid);
1400 int security_xfrm_state_delete(struct xfrm_state *x);
1401 void security_xfrm_state_free(struct xfrm_state *x);
1402 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1403 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1404                                        struct xfrm_policy *xp,
1405                                        const struct flowi *fl);
1406 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
1407 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
1408
1409 #else   /* CONFIG_SECURITY_NETWORK_XFRM */
1410
1411 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1412                                              struct xfrm_user_sec_ctx *sec_ctx,
1413                                              gfp_t gfp)
1414 {
1415         return 0;
1416 }
1417
1418 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
1419 {
1420         return 0;
1421 }
1422
1423 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1424 {
1425 }
1426
1427 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1428 {
1429         return 0;
1430 }
1431
1432 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
1433                                         struct xfrm_user_sec_ctx *sec_ctx)
1434 {
1435         return 0;
1436 }
1437
1438 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1439                                         struct xfrm_sec_ctx *polsec, u32 secid)
1440 {
1441         return 0;
1442 }
1443
1444 static inline void security_xfrm_state_free(struct xfrm_state *x)
1445 {
1446 }
1447
1448 static inline int security_xfrm_state_delete(struct xfrm_state *x)
1449 {
1450         return 0;
1451 }
1452
1453 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1454 {
1455         return 0;
1456 }
1457
1458 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1459                         struct xfrm_policy *xp, const struct flowi *fl)
1460 {
1461         return 1;
1462 }
1463
1464 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1465 {
1466         return 0;
1467 }
1468
1469 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1470 {
1471 }
1472
1473 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1474
1475 #ifdef CONFIG_SECURITY_PATH
1476 int security_path_unlink(const struct path *dir, struct dentry *dentry);
1477 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode);
1478 int security_path_rmdir(const struct path *dir, struct dentry *dentry);
1479 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
1480                         unsigned int dev);
1481 int security_path_truncate(const struct path *path);
1482 int security_path_symlink(const struct path *dir, struct dentry *dentry,
1483                           const char *old_name);
1484 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
1485                        struct dentry *new_dentry);
1486 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
1487                          const struct path *new_dir, struct dentry *new_dentry,
1488                          unsigned int flags);
1489 int security_path_chmod(const struct path *path, umode_t mode);
1490 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid);
1491 int security_path_chroot(const struct path *path);
1492 #else   /* CONFIG_SECURITY_PATH */
1493 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry)
1494 {
1495         return 0;
1496 }
1497
1498 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry,
1499                                       umode_t mode)
1500 {
1501         return 0;
1502 }
1503
1504 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry)
1505 {
1506         return 0;
1507 }
1508
1509 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry,
1510                                       umode_t mode, unsigned int dev)
1511 {
1512         return 0;
1513 }
1514
1515 static inline int security_path_truncate(const struct path *path)
1516 {
1517         return 0;
1518 }
1519
1520 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry,
1521                                         const char *old_name)
1522 {
1523         return 0;
1524 }
1525
1526 static inline int security_path_link(struct dentry *old_dentry,
1527                                      const struct path *new_dir,
1528                                      struct dentry *new_dentry)
1529 {
1530         return 0;
1531 }
1532
1533 static inline int security_path_rename(const struct path *old_dir,
1534                                        struct dentry *old_dentry,
1535                                        const struct path *new_dir,
1536                                        struct dentry *new_dentry,
1537                                        unsigned int flags)
1538 {
1539         return 0;
1540 }
1541
1542 static inline int security_path_chmod(const struct path *path, umode_t mode)
1543 {
1544         return 0;
1545 }
1546
1547 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
1548 {
1549         return 0;
1550 }
1551
1552 static inline int security_path_chroot(const struct path *path)
1553 {
1554         return 0;
1555 }
1556 #endif  /* CONFIG_SECURITY_PATH */
1557
1558 #ifdef CONFIG_KEYS
1559 #ifdef CONFIG_SECURITY
1560
1561 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
1562 void security_key_free(struct key *key);
1563 int security_key_permission(key_ref_t key_ref,
1564                             const struct cred *cred, unsigned perm);
1565 int security_key_getsecurity(struct key *key, char **_buffer);
1566
1567 #else
1568
1569 static inline int security_key_alloc(struct key *key,
1570                                      const struct cred *cred,
1571                                      unsigned long flags)
1572 {
1573         return 0;
1574 }
1575
1576 static inline void security_key_free(struct key *key)
1577 {
1578 }
1579
1580 static inline int security_key_permission(key_ref_t key_ref,
1581                                           const struct cred *cred,
1582                                           unsigned perm)
1583 {
1584         return 0;
1585 }
1586
1587 static inline int security_key_getsecurity(struct key *key, char **_buffer)
1588 {
1589         *_buffer = NULL;
1590         return 0;
1591 }
1592
1593 #endif
1594 #endif /* CONFIG_KEYS */
1595
1596 #ifdef CONFIG_AUDIT
1597 #ifdef CONFIG_SECURITY
1598 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
1599 int security_audit_rule_known(struct audit_krule *krule);
1600 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1601                               struct audit_context *actx);
1602 void security_audit_rule_free(void *lsmrule);
1603
1604 #else
1605
1606 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
1607                                            void **lsmrule)
1608 {
1609         return 0;
1610 }
1611
1612 static inline int security_audit_rule_known(struct audit_krule *krule)
1613 {
1614         return 0;
1615 }
1616
1617 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
1618                                    void *lsmrule, struct audit_context *actx)
1619 {
1620         return 0;
1621 }
1622
1623 static inline void security_audit_rule_free(void *lsmrule)
1624 { }
1625
1626 #endif /* CONFIG_SECURITY */
1627 #endif /* CONFIG_AUDIT */
1628
1629 #ifdef CONFIG_SECURITYFS
1630
1631 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
1632                                              struct dentry *parent, void *data,
1633                                              const struct file_operations *fops);
1634 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
1635 extern void securityfs_remove(struct dentry *dentry);
1636
1637 #else /* CONFIG_SECURITYFS */
1638
1639 static inline struct dentry *securityfs_create_dir(const char *name,
1640                                                    struct dentry *parent)
1641 {
1642         return ERR_PTR(-ENODEV);
1643 }
1644
1645 static inline struct dentry *securityfs_create_file(const char *name,
1646                                                     umode_t mode,
1647                                                     struct dentry *parent,
1648                                                     void *data,
1649                                                     const struct file_operations *fops)
1650 {
1651         return ERR_PTR(-ENODEV);
1652 }
1653
1654 static inline void securityfs_remove(struct dentry *dentry)
1655 {}
1656
1657 #endif
1658
1659 #ifdef CONFIG_SECURITY
1660
1661 static inline char *alloc_secdata(void)
1662 {
1663         return (char *)get_zeroed_page(GFP_KERNEL);
1664 }
1665
1666 static inline void free_secdata(void *secdata)
1667 {
1668         free_page((unsigned long)secdata);
1669 }
1670
1671 #else
1672
1673 static inline char *alloc_secdata(void)
1674 {
1675         return (char *)1;
1676 }
1677
1678 static inline void free_secdata(void *secdata)
1679 { }
1680 #endif /* CONFIG_SECURITY */
1681
1682 #endif /* ! __LINUX_SECURITY_H */
1683