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