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_wait(struct task_struct *p);
 336 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 337                         unsigned long arg4, unsigned long arg5);
 338 void security_task_to_inode(struct task_struct *p, struct inode *inode);
 339 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
 340 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
 341 int security_msg_msg_alloc(struct msg_msg *msg);
 342 void security_msg_msg_free(struct msg_msg *msg);
 343 int security_msg_queue_alloc(struct msg_queue *msq);
 344 void security_msg_queue_free(struct msg_queue *msq);
 345 int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
 346 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
 347 int security_msg_queue_msgsnd(struct msg_queue *msq,
 348                               struct msg_msg *msg, int msqflg);
 349 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
 350                               struct task_struct *target, long type, int mode);
 351 int security_shm_alloc(struct shmid_kernel *shp);
 352 void security_shm_free(struct shmid_kernel *shp);
 353 int security_shm_associate(struct shmid_kernel *shp, int shmflg);
 354 int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
 355 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
 356 int security_sem_alloc(struct sem_array *sma);
 357 void security_sem_free(struct sem_array *sma);
 358 int security_sem_associate(struct sem_array *sma, int semflg);
 359 int security_sem_semctl(struct sem_array *sma, int cmd);
 360 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
 361                         unsigned nsops, int alter);
 362 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
 363 int security_getprocattr(struct task_struct *p, char *name, char **value);
 364 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
 365 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
 366 int security_ismaclabel(const char *name);
 367 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
 368 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
 369 void security_release_secctx(char *secdata, u32 seclen);
 370
 371 void security_inode_invalidate_secctx(struct inode *inode);
 372 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
 373 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
 374 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
 375 #else /* CONFIG_SECURITY */
 376 struct security_mnt_opts {
 377 };
 378
 379 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
 380 {
 381 }
 382
 383 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
 384 {
 385 }
 386
 387 /*
 388  * This is the default capabilities functionality.  Most of these functions
 389  * are just stubbed out, but a few must call the proper capable code.
 390  */
 391
 392 static inline int security_init(void)
 393 {
 394         return 0;
 395 }
 396
 397 static inline int security_binder_set_context_mgr(struct task_struct *mgr)
 398 {
 399         return 0;
 400 }
 401
 402 static inline int security_binder_transaction(struct task_struct *from,
 403                                               struct task_struct *to)
 404 {
 405         return 0;
 406 }
 407
 408 static inline int security_binder_transfer_binder(struct task_struct *from,
 409                                                   struct task_struct *to)
 410 {
 411         return 0;
 412 }
 413
 414 static inline int security_binder_transfer_file(struct task_struct *from,
 415                                                 struct task_struct *to,
 416                                                 struct file *file)
 417 {
 418         return 0;
 419 }
 420
 421 static inline int security_ptrace_access_check(struct task_struct *child,
 422                                              unsigned int mode)
 423 {
 424         return cap_ptrace_access_check(child, mode);
 425 }
 426
 427 static inline int security_ptrace_traceme(struct task_struct *parent)
 428 {
 429         return cap_ptrace_traceme(parent);
 430 }
 431
 432 static inline int security_capget(struct task_struct *target,
 433                                    kernel_cap_t *effective,
 434                                    kernel_cap_t *inheritable,
 435                                    kernel_cap_t *permitted)
 436 {
 437         return cap_capget(target, effective, inheritable, permitted);
 438 }
 439
 440 static inline int security_capset(struct cred *new,
 441                                    const struct cred *old,
 442                                    const kernel_cap_t *effective,
 443                                    const kernel_cap_t *inheritable,
 444                                    const kernel_cap_t *permitted)
 445 {
 446         return cap_capset(new, old, effective, inheritable, permitted);
 447 }
 448
 449 static inline int security_capable(const struct cred *cred,
 450                                    struct user_namespace *ns, int cap)
 451 {
 452         return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT);
 453 }
 454
 455 static inline int security_capable_noaudit(const struct cred *cred,
 456                                            struct user_namespace *ns, int cap) {
 457         return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
 458 }
 459
 460 static inline int security_quotactl(int cmds, int type, int id,
 461                                      struct super_block *sb)
 462 {
 463         return 0;
 464 }
 465
 466 static inline int security_quota_on(struct dentry *dentry)
 467 {
 468         return 0;
 469 }
 470
 471 static inline int security_syslog(int type)
 472 {
 473         return 0;
 474 }
 475
 476 static inline int security_settime64(const struct timespec64 *ts,
 477                                      const struct timezone *tz)
 478 {
 479         return cap_settime(ts, tz);
 480 }
 481
 482 static inline int security_settime(const struct timespec *ts,
 483                                    const struct timezone *tz)
 484 {
 485         struct timespec64 ts64 = timespec_to_timespec64(*ts);
 486
 487         return cap_settime(&ts64, tz);
 488 }
 489
 490 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 491 {
 492         return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages));
 493 }
 494
 495 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
 496 {
 497         return cap_bprm_set_creds(bprm);
 498 }
 499
 500 static inline int security_bprm_check(struct linux_binprm *bprm)
 501 {
 502         return 0;
 503 }
 504
 505 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
 506 {
 507 }
 508
 509 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
 510 {
 511 }
 512
 513 static inline int security_bprm_secureexec(struct linux_binprm *bprm)
 514 {
 515         return cap_bprm_secureexec(bprm);
 516 }
 517
 518 static inline int security_sb_alloc(struct super_block *sb)
 519 {
 520         return 0;
 521 }
 522
 523 static inline void security_sb_free(struct super_block *sb)
 524 { }
 525
 526 static inline int security_sb_copy_data(char *orig, char *copy)
 527 {
 528         return 0;
 529 }
 530
 531 static inline int security_sb_remount(struct super_block *sb, void *data)
 532 {
 533         return 0;
 534 }
 535
 536 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
 537 {
 538         return 0;
 539 }
 540
 541 static inline int security_sb_show_options(struct seq_file *m,
 542                                            struct super_block *sb)
 543 {
 544         return 0;
 545 }
 546
 547 static inline int security_sb_statfs(struct dentry *dentry)
 548 {
 549         return 0;
 550 }
 551
 552 static inline int security_sb_mount(const char *dev_name, const struct path *path,
 553                                     const char *type, unsigned long flags,
 554                                     void *data)
 555 {
 556         return 0;
 557 }
 558
 559 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
 560 {
 561         return 0;
 562 }
 563
 564 static inline int security_sb_pivotroot(const struct path *old_path,
 565                                         const struct path *new_path)
 566 {
 567         return 0;
 568 }
 569
 570 static inline int security_sb_set_mnt_opts(struct super_block *sb,
 571                                            struct security_mnt_opts *opts,
 572                                            unsigned long kern_flags,
 573                                            unsigned long *set_kern_flags)
 574 {
 575         return 0;
 576 }
 577
 578 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 579                                               struct super_block *newsb)
 580 {
 581         return 0;
 582 }
 583
 584 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
 585 {
 586         return 0;
 587 }
 588
 589 static inline int security_inode_alloc(struct inode *inode)
 590 {
 591         return 0;
 592 }
 593
 594 static inline void security_inode_free(struct inode *inode)
 595 { }
 596
 597 static inline int security_dentry_init_security(struct dentry *dentry,
 598                                                  int mode,
 599                                                  const struct qstr *name,
 600                                                  void **ctx,
 601                                                  u32 *ctxlen)
 602 {
 603         return -EOPNOTSUPP;
 604 }
 605
 606 static inline int security_dentry_create_files_as(struct dentry *dentry,
 607                                                   int mode, struct qstr *name,
 608                                                   const struct cred *old,
 609                                                   struct cred *new)
 610 {
 611         return 0;
 612 }
 613
 614
 615 static inline int security_inode_init_security(struct inode *inode,
 616                                                 struct inode *dir,
 617                                                 const struct qstr *qstr,
 618                                                 const initxattrs xattrs,
 619                                                 void *fs_data)
 620 {
 621         return 0;
 622 }
 623
 624 static inline int security_old_inode_init_security(struct inode *inode,
 625                                                    struct inode *dir,
 626                                                    const struct qstr *qstr,
 627                                                    const char **name,
 628                                                    void **value, size_t *len)
 629 {
 630         return -EOPNOTSUPP;
 631 }
 632
 633 static inline int security_inode_create(struct inode *dir,
 634                                          struct dentry *dentry,
 635                                          umode_t mode)
 636 {
 637         return 0;
 638 }
 639
 640 static inline int security_inode_link(struct dentry *old_dentry,
 641                                        struct inode *dir,
 642                                        struct dentry *new_dentry)
 643 {
 644         return 0;
 645 }
 646
 647 static inline int security_inode_unlink(struct inode *dir,
 648                                          struct dentry *dentry)
 649 {
 650         return 0;
 651 }
 652
 653 static inline int security_inode_symlink(struct inode *dir,
 654                                           struct dentry *dentry,
 655                                           const char *old_name)
 656 {
 657         return 0;
 658 }
 659
 660 static inline int security_inode_mkdir(struct inode *dir,
 661                                         struct dentry *dentry,
 662                                         int mode)
 663 {
 664         return 0;
 665 }
 666
 667 static inline int security_inode_rmdir(struct inode *dir,
 668                                         struct dentry *dentry)
 669 {
 670         return 0;
 671 }
 672
 673 static inline int security_inode_mknod(struct inode *dir,
 674                                         struct dentry *dentry,
 675                                         int mode, dev_t dev)
 676 {
 677         return 0;
 678 }
 679
 680 static inline int security_inode_rename(struct inode *old_dir,
 681                                          struct dentry *old_dentry,
 682                                          struct inode *new_dir,
 683                                          struct dentry *new_dentry,
 684                                          unsigned int flags)
 685 {
 686         return 0;
 687 }
 688
 689 static inline int security_inode_readlink(struct dentry *dentry)
 690 {
 691         return 0;
 692 }
 693
 694 static inline int security_inode_follow_link(struct dentry *dentry,
 695                                              struct inode *inode,
 696                                              bool rcu)
 697 {
 698         return 0;
 699 }
 700
 701 static inline int security_inode_permission(struct inode *inode, int mask)
 702 {
 703         return 0;
 704 }
 705
 706 static inline int security_inode_setattr(struct dentry *dentry,
 707                                           struct iattr *attr)
 708 {
 709         return 0;
 710 }
 711
 712 static inline int security_inode_getattr(const struct path *path)
 713 {
 714         return 0;
 715 }
 716
 717 static inline int security_inode_setxattr(struct dentry *dentry,
 718                 const char *name, const void *value, size_t size, int flags)
 719 {
 720         return cap_inode_setxattr(dentry, name, value, size, flags);
 721 }
 722
 723 static inline void security_inode_post_setxattr(struct dentry *dentry,
 724                 const char *name, const void *value, size_t size, int flags)
 725 { }
 726
 727 static inline int security_inode_getxattr(struct dentry *dentry,
 728                         const char *name)
 729 {
 730         return 0;
 731 }
 732
 733 static inline int security_inode_listxattr(struct dentry *dentry)
 734 {
 735         return 0;
 736 }
 737
 738 static inline int security_inode_removexattr(struct dentry *dentry,
 739                         const char *name)
 740 {
 741         return cap_inode_removexattr(dentry, name);
 742 }
 743
 744 static inline int security_inode_need_killpriv(struct dentry *dentry)
 745 {
 746         return cap_inode_need_killpriv(dentry);
 747 }
 748
 749 static inline int security_inode_killpriv(struct dentry *dentry)
 750 {
 751         return cap_inode_killpriv(dentry);
 752 }
 753
 754 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
 755 {
 756         return -EOPNOTSUPP;
 757 }
 758
 759 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 760 {
 761         return -EOPNOTSUPP;
 762 }
 763
 764 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 765 {
 766         return 0;
 767 }
 768
 769 static inline void security_inode_getsecid(struct inode *inode, u32 *secid)
 770 {
 771         *secid = 0;
 772 }
 773
 774 static inline int security_inode_copy_up(struct dentry *src, struct cred **new)
 775 {
 776         return 0;
 777 }
 778
 779 static inline int security_inode_copy_up_xattr(const char *name)
 780 {
 781         return -EOPNOTSUPP;
 782 }
 783
 784 static inline int security_file_permission(struct file *file, int mask)
 785 {
 786         return 0;
 787 }
 788
 789 static inline int security_file_alloc(struct file *file)
 790 {
 791         return 0;
 792 }
 793
 794 static inline void security_file_free(struct file *file)
 795 { }
 796
 797 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
 798                                       unsigned long arg)
 799 {
 800         return 0;
 801 }
 802
 803 static inline int security_mmap_file(struct file *file, unsigned long prot,
 804                                      unsigned long flags)
 805 {
 806         return 0;
 807 }
 808
 809 static inline int security_mmap_addr(unsigned long addr)
 810 {
 811         return cap_mmap_addr(addr);
 812 }
 813
 814 static inline int security_file_mprotect(struct vm_area_struct *vma,
 815                                          unsigned long reqprot,
 816                                          unsigned long prot)
 817 {
 818         return 0;
 819 }
 820
 821 static inline int security_file_lock(struct file *file, unsigned int cmd)
 822 {
 823         return 0;
 824 }
 825
 826 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
 827                                       unsigned long arg)
 828 {
 829         return 0;
 830 }
 831
 832 static inline void security_file_set_fowner(struct file *file)
 833 {
 834         return;
 835 }
 836
 837 static inline int security_file_send_sigiotask(struct task_struct *tsk,
 838                                                struct fown_struct *fown,
 839                                                int sig)
 840 {
 841         return 0;
 842 }
 843
 844 static inline int security_file_receive(struct file *file)
 845 {
 846         return 0;
 847 }
 848
 849 static inline int security_file_open(struct file *file,
 850                                      const struct cred *cred)
 851 {
 852         return 0;
 853 }
 854
 855 static inline int security_task_create(unsigned long clone_flags)
 856 {
 857         return 0;
 858 }
 859
 860 static inline void security_task_free(struct task_struct *task)
 861 { }
 862
 863 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 864 {
 865         return 0;
 866 }
 867
 868 static inline void security_cred_free(struct cred *cred)
 869 { }
 870
 871 static inline int security_prepare_creds(struct cred *new,
 872                                          const struct cred *old,
 873                                          gfp_t gfp)
 874 {
 875         return 0;
 876 }
 877
 878 static inline void security_transfer_creds(struct cred *new,
 879                                            const struct cred *old)
 880 {
 881 }
 882
 883 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
 884 {
 885         return 0;
 886 }
 887
 888 static inline int security_kernel_create_files_as(struct cred *cred,
 889                                                   struct inode *inode)
 890 {
 891         return 0;
 892 }
 893
 894 static inline int security_kernel_module_request(char *kmod_name)
 895 {
 896         return 0;
 897 }
 898
 899 static inline int security_kernel_read_file(struct file *file,
 900                                             enum kernel_read_file_id id)
 901 {
 902         return 0;
 903 }
 904
 905 static inline int security_kernel_post_read_file(struct file *file,
 906                                                  char *buf, loff_t size,
 907                                                  enum kernel_read_file_id id)
 908 {
 909         return 0;
 910 }
 911
 912 static inline int security_task_fix_setuid(struct cred *new,
 913                                            const struct cred *old,
 914                                            int flags)
 915 {
 916         return cap_task_fix_setuid(new, old, flags);
 917 }
 918
 919 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
 920 {
 921         return 0;
 922 }
 923
 924 static inline int security_task_getpgid(struct task_struct *p)
 925 {
 926         return 0;
 927 }
 928
 929 static inline int security_task_getsid(struct task_struct *p)
 930 {
 931         return 0;
 932 }
 933
 934 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
 935 {
 936         *secid = 0;
 937 }
 938
 939 static inline int security_task_setnice(struct task_struct *p, int nice)
 940 {
 941         return cap_task_setnice(p, nice);
 942 }
 943
 944 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
 945 {
 946         return cap_task_setioprio(p, ioprio);
 947 }
 948
 949 static inline int security_task_getioprio(struct task_struct *p)
 950 {
 951         return 0;
 952 }
 953
 954 static inline int security_task_setrlimit(struct task_struct *p,
 955                                           unsigned int resource,
 956                                           struct rlimit *new_rlim)
 957 {
 958         return 0;
 959 }
 960
 961 static inline int security_task_setscheduler(struct task_struct *p)
 962 {
 963         return cap_task_setscheduler(p);
 964 }
 965
 966 static inline int security_task_getscheduler(struct task_struct *p)
 967 {
 968         return 0;
 969 }
 970
 971 static inline int security_task_movememory(struct task_struct *p)
 972 {
 973         return 0;
 974 }
 975
 976 static inline int security_task_kill(struct task_struct *p,
 977                                      struct siginfo *info, int sig,
 978                                      u32 secid)
 979 {
 980         return 0;
 981 }
 982
 983 static inline int security_task_wait(struct task_struct *p)
 984 {
 985         return 0;
 986 }
 987
 988 static inline int security_task_prctl(int option, unsigned long arg2,
 989                                       unsigned long arg3,
 990                                       unsigned long arg4,
 991                                       unsigned long arg5)
 992 {
 993         return cap_task_prctl(option, arg2, arg3, arg4, arg5);
 994 }
 995
 996 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
 997 { }
 998
 999 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
1000                                           short flag)
1001 {
1002         return 0;
1003 }
1004
1005 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1006 {
1007         *secid = 0;
1008 }
1009
1010 static inline int security_msg_msg_alloc(struct msg_msg *msg)
1011 {
1012         return 0;
1013 }
1014
1015 static inline void security_msg_msg_free(struct msg_msg *msg)
1016 { }
1017
1018 static inline int security_msg_queue_alloc(struct msg_queue *msq)
1019 {
1020         return 0;
1021 }
1022
1023 static inline void security_msg_queue_free(struct msg_queue *msq)
1024 { }
1025
1026 static inline int security_msg_queue_associate(struct msg_queue *msq,
1027                                                int msqflg)
1028 {
1029         return 0;
1030 }
1031
1032 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
1033 {
1034         return 0;
1035 }
1036
1037 static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
1038                                             struct msg_msg *msg, int msqflg)
1039 {
1040         return 0;
1041 }
1042
1043 static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
1044                                             struct msg_msg *msg,
1045                                             struct task_struct *target,
1046                                             long type, int mode)
1047 {
1048         return 0;
1049 }
1050
1051 static inline int security_shm_alloc(struct shmid_kernel *shp)
1052 {
1053         return 0;
1054 }
1055
1056 static inline void security_shm_free(struct shmid_kernel *shp)
1057 { }
1058
1059 static inline int security_shm_associate(struct shmid_kernel *shp,
1060                                          int shmflg)
1061 {
1062         return 0;
1063 }
1064
1065 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
1066 {
1067         return 0;
1068 }
1069
1070 static inline int security_shm_shmat(struct shmid_kernel *shp,
1071                                      char __user *shmaddr, int shmflg)
1072 {
1073         return 0;
1074 }
1075
1076 static inline int security_sem_alloc(struct sem_array *sma)
1077 {
1078         return 0;
1079 }
1080
1081 static inline void security_sem_free(struct sem_array *sma)
1082 { }
1083
1084 static inline int security_sem_associate(struct sem_array *sma, int semflg)
1085 {
1086         return 0;
1087 }
1088
1089 static inline int security_sem_semctl(struct sem_array *sma, int cmd)
1090 {
1091         return 0;
1092 }
1093
1094 static inline int security_sem_semop(struct sem_array *sma,
1095                                      struct sembuf *sops, unsigned nsops,
1096                                      int alter)
1097 {
1098         return 0;
1099 }
1100
1101 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1102 { }
1103
1104 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
1105 {
1106         return -EINVAL;
1107 }
1108
1109 static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
1110 {
1111         return -EINVAL;
1112 }
1113
1114 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1115 {
1116         return 0;
1117 }
1118
1119 static inline int security_ismaclabel(const char *name)
1120 {
1121         return 0;
1122 }
1123
1124 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1125 {
1126         return -EOPNOTSUPP;
1127 }
1128
1129 static inline int security_secctx_to_secid(const char *secdata,
1130                                            u32 seclen,
1131                                            u32 *secid)
1132 {
1133         return -EOPNOTSUPP;
1134 }
1135
1136 static inline void security_release_secctx(char *secdata, u32 seclen)
1137 {
1138 }
1139
1140 static inline void security_inode_invalidate_secctx(struct inode *inode)
1141 {
1142 }
1143
1144 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1145 {
1146         return -EOPNOTSUPP;
1147 }
1148 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1149 {
1150         return -EOPNOTSUPP;
1151 }
1152 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1153 {
1154         return -EOPNOTSUPP;
1155 }
1156 #endif  /* CONFIG_SECURITY */
1157
1158 #ifdef CONFIG_SECURITY_NETWORK
1159
1160 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
1161 int security_unix_may_send(struct socket *sock,  struct socket *other);
1162 int security_socket_create(int family, int type, int protocol, int kern);
1163 int security_socket_post_create(struct socket *sock, int family,
1164                                 int type, int protocol, int kern);
1165 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
1166 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
1167 int security_socket_listen(struct socket *sock, int backlog);
1168 int security_socket_accept(struct socket *sock, struct socket *newsock);
1169 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
1170 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1171                             int size, int flags);
1172 int security_socket_getsockname(struct socket *sock);
1173 int security_socket_getpeername(struct socket *sock);
1174 int security_socket_getsockopt(struct socket *sock, int level, int optname);
1175 int security_socket_setsockopt(struct socket *sock, int level, int optname);
1176 int security_socket_shutdown(struct socket *sock, int how);
1177 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
1178 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1179                                       int __user *optlen, unsigned len);
1180 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
1181 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
1182 void security_sk_free(struct sock *sk);
1183 void security_sk_clone(const struct sock *sk, struct sock *newsk);
1184 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
1185 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
1186 void security_sock_graft(struct sock*sk, struct socket *parent);
1187 int security_inet_conn_request(struct sock *sk,
1188                         struct sk_buff *skb, struct request_sock *req);
1189 void security_inet_csk_clone(struct sock *newsk,
1190                         const struct request_sock *req);
1191 void security_inet_conn_established(struct sock *sk,
1192                         struct sk_buff *skb);
1193 int security_secmark_relabel_packet(u32 secid);
1194 void security_secmark_refcount_inc(void);
1195 void security_secmark_refcount_dec(void);
1196 int security_tun_dev_alloc_security(void **security);
1197 void security_tun_dev_free_security(void *security);
1198 int security_tun_dev_create(void);
1199 int security_tun_dev_attach_queue(void *security);
1200 int security_tun_dev_attach(struct sock *sk, void *security);
1201 int security_tun_dev_open(void *security);
1202
1203 #else   /* CONFIG_SECURITY_NETWORK */
1204 static inline int security_unix_stream_connect(struct sock *sock,
1205                                                struct sock *other,
1206                                                struct sock *newsk)
1207 {
1208         return 0;
1209 }
1210
1211 static inline int security_unix_may_send(struct socket *sock,
1212                                          struct socket *other)
1213 {
1214         return 0;
1215 }
1216
1217 static inline int security_socket_create(int family, int type,
1218                                          int protocol, int kern)
1219 {
1220         return 0;
1221 }
1222
1223 static inline int security_socket_post_create(struct socket *sock,
1224                                               int family,
1225                                               int type,
1226                                               int protocol, int kern)
1227 {
1228         return 0;
1229 }
1230
1231 static inline int security_socket_bind(struct socket *sock,
1232                                        struct sockaddr *address,
1233                                        int addrlen)
1234 {
1235         return 0;
1236 }
1237
1238 static inline int security_socket_connect(struct socket *sock,
1239                                           struct sockaddr *address,
1240                                           int addrlen)
1241 {
1242         return 0;
1243 }
1244
1245 static inline int security_socket_listen(struct socket *sock, int backlog)
1246 {
1247         return 0;
1248 }
1249
1250 static inline int security_socket_accept(struct socket *sock,
1251                                          struct socket *newsock)
1252 {
1253         return 0;
1254 }
1255
1256 static inline int security_socket_sendmsg(struct socket *sock,
1257                                           struct msghdr *msg, int size)
1258 {
1259         return 0;
1260 }
1261
1262 static inline int security_socket_recvmsg(struct socket *sock,
1263                                           struct msghdr *msg, int size,
1264                                           int flags)
1265 {
1266         return 0;
1267 }
1268
1269 static inline int security_socket_getsockname(struct socket *sock)
1270 {
1271         return 0;
1272 }
1273
1274 static inline int security_socket_getpeername(struct socket *sock)
1275 {
1276         return 0;
1277 }
1278
1279 static inline int security_socket_getsockopt(struct socket *sock,
1280                                              int level, int optname)
1281 {
1282         return 0;
1283 }
1284
1285 static inline int security_socket_setsockopt(struct socket *sock,
1286                                              int level, int optname)
1287 {
1288         return 0;
1289 }
1290
1291 static inline int security_socket_shutdown(struct socket *sock, int how)
1292 {
1293         return 0;
1294 }
1295 static inline int security_sock_rcv_skb(struct sock *sk,
1296                                         struct sk_buff *skb)
1297 {
1298         return 0;
1299 }
1300
1301 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1302                                                     int __user *optlen, unsigned len)
1303 {
1304         return -ENOPROTOOPT;
1305 }
1306
1307 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1308 {
1309         return -ENOPROTOOPT;
1310 }
1311
1312 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1313 {
1314         return 0;
1315 }
1316
1317 static inline void security_sk_free(struct sock *sk)
1318 {
1319 }
1320
1321 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
1322 {
1323 }
1324
1325 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1326 {
1327 }
1328
1329 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1330 {
1331 }
1332
1333 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
1334 {
1335 }
1336
1337 static inline int security_inet_conn_request(struct sock *sk,
1338                         struct sk_buff *skb, struct request_sock *req)
1339 {
1340         return 0;
1341 }
1342
1343 static inline void security_inet_csk_clone(struct sock *newsk,
1344                         const struct request_sock *req)
1345 {
1346 }
1347
1348 static inline void security_inet_conn_established(struct sock *sk,
1349                         struct sk_buff *skb)
1350 {
1351 }
1352
1353 static inline int security_secmark_relabel_packet(u32 secid)
1354 {
1355         return 0;
1356 }
1357
1358 static inline void security_secmark_refcount_inc(void)
1359 {
1360 }
1361
1362 static inline void security_secmark_refcount_dec(void)
1363 {
1364 }
1365
1366 static inline int security_tun_dev_alloc_security(void **security)
1367 {
1368         return 0;
1369 }
1370
1371 static inline void security_tun_dev_free_security(void *security)
1372 {
1373 }
1374
1375 static inline int security_tun_dev_create(void)
1376 {
1377         return 0;
1378 }
1379
1380 static inline int security_tun_dev_attach_queue(void *security)
1381 {
1382         return 0;
1383 }
1384
1385 static inline int security_tun_dev_attach(struct sock *sk, void *security)
1386 {
1387         return 0;
1388 }
1389
1390 static inline int security_tun_dev_open(void *security)
1391 {
1392         return 0;
1393 }
1394 #endif  /* CONFIG_SECURITY_NETWORK */
1395
1396 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1397
1398 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1399                                struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
1400 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
1401 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
1402 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
1403 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
1404 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1405                                       struct xfrm_sec_ctx *polsec, u32 secid);
1406 int security_xfrm_state_delete(struct xfrm_state *x);
1407 void security_xfrm_state_free(struct xfrm_state *x);
1408 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1409 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1410                                        struct xfrm_policy *xp,
1411                                        const struct flowi *fl);
1412 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
1413 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
1414
1415 #else   /* CONFIG_SECURITY_NETWORK_XFRM */
1416
1417 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1418                                              struct xfrm_user_sec_ctx *sec_ctx,
1419                                              gfp_t gfp)
1420 {
1421         return 0;
1422 }
1423
1424 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
1425 {
1426         return 0;
1427 }
1428
1429 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1430 {
1431 }
1432
1433 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1434 {
1435         return 0;
1436 }
1437
1438 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
1439                                         struct xfrm_user_sec_ctx *sec_ctx)
1440 {
1441         return 0;
1442 }
1443
1444 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1445                                         struct xfrm_sec_ctx *polsec, u32 secid)
1446 {
1447         return 0;
1448 }
1449
1450 static inline void security_xfrm_state_free(struct xfrm_state *x)
1451 {
1452 }
1453
1454 static inline int security_xfrm_state_delete(struct xfrm_state *x)
1455 {
1456         return 0;
1457 }
1458
1459 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1460 {
1461         return 0;
1462 }
1463
1464 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1465                         struct xfrm_policy *xp, const struct flowi *fl)
1466 {
1467         return 1;
1468 }
1469
1470 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1471 {
1472         return 0;
1473 }
1474
1475 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1476 {
1477 }
1478
1479 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1480
1481 #ifdef CONFIG_SECURITY_PATH
1482 int security_path_unlink(const struct path *dir, struct dentry *dentry);
1483 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode);
1484 int security_path_rmdir(const struct path *dir, struct dentry *dentry);
1485 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
1486                         unsigned int dev);
1487 int security_path_truncate(const struct path *path);
1488 int security_path_symlink(const struct path *dir, struct dentry *dentry,
1489                           const char *old_name);
1490 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
1491                        struct dentry *new_dentry);
1492 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
1493                          const struct path *new_dir, struct dentry *new_dentry,
1494                          unsigned int flags);
1495 int security_path_chmod(const struct path *path, umode_t mode);
1496 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid);
1497 int security_path_chroot(const struct path *path);
1498 #else   /* CONFIG_SECURITY_PATH */
1499 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry)
1500 {
1501         return 0;
1502 }
1503
1504 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry,
1505                                       umode_t mode)
1506 {
1507         return 0;
1508 }
1509
1510 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry)
1511 {
1512         return 0;
1513 }
1514
1515 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry,
1516                                       umode_t mode, unsigned int dev)
1517 {
1518         return 0;
1519 }
1520
1521 static inline int security_path_truncate(const struct path *path)
1522 {
1523         return 0;
1524 }
1525
1526 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry,
1527                                         const char *old_name)
1528 {
1529         return 0;
1530 }
1531
1532 static inline int security_path_link(struct dentry *old_dentry,
1533                                      const struct path *new_dir,
1534                                      struct dentry *new_dentry)
1535 {
1536         return 0;
1537 }
1538
1539 static inline int security_path_rename(const struct path *old_dir,
1540                                        struct dentry *old_dentry,
1541                                        const struct path *new_dir,
1542                                        struct dentry *new_dentry,
1543                                        unsigned int flags)
1544 {
1545         return 0;
1546 }
1547
1548 static inline int security_path_chmod(const struct path *path, umode_t mode)
1549 {
1550         return 0;
1551 }
1552
1553 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
1554 {
1555         return 0;
1556 }
1557
1558 static inline int security_path_chroot(const struct path *path)
1559 {
1560         return 0;
1561 }
1562 #endif  /* CONFIG_SECURITY_PATH */
1563
1564 #ifdef CONFIG_KEYS
1565 #ifdef CONFIG_SECURITY
1566
1567 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
1568 void security_key_free(struct key *key);
1569 int security_key_permission(key_ref_t key_ref,
1570                             const struct cred *cred, unsigned perm);
1571 int security_key_getsecurity(struct key *key, char **_buffer);
1572
1573 #else
1574
1575 static inline int security_key_alloc(struct key *key,
1576                                      const struct cred *cred,
1577                                      unsigned long flags)
1578 {
1579         return 0;
1580 }
1581
1582 static inline void security_key_free(struct key *key)
1583 {
1584 }
1585
1586 static inline int security_key_permission(key_ref_t key_ref,
1587                                           const struct cred *cred,
1588                                           unsigned perm)
1589 {
1590         return 0;
1591 }
1592
1593 static inline int security_key_getsecurity(struct key *key, char **_buffer)
1594 {
1595         *_buffer = NULL;
1596         return 0;
1597 }
1598
1599 #endif
1600 #endif /* CONFIG_KEYS */
1601
1602 #ifdef CONFIG_AUDIT
1603 #ifdef CONFIG_SECURITY
1604 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
1605 int security_audit_rule_known(struct audit_krule *krule);
1606 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1607                               struct audit_context *actx);
1608 void security_audit_rule_free(void *lsmrule);
1609
1610 #else
1611
1612 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
1613                                            void **lsmrule)
1614 {
1615         return 0;
1616 }
1617
1618 static inline int security_audit_rule_known(struct audit_krule *krule)
1619 {
1620         return 0;
1621 }
1622
1623 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
1624                                    void *lsmrule, struct audit_context *actx)
1625 {
1626         return 0;
1627 }
1628
1629 static inline void security_audit_rule_free(void *lsmrule)
1630 { }
1631
1632 #endif /* CONFIG_SECURITY */
1633 #endif /* CONFIG_AUDIT */
1634
1635 #ifdef CONFIG_SECURITYFS
1636
1637 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
1638                                              struct dentry *parent, void *data,
1639                                              const struct file_operations *fops);
1640 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
1641 extern void securityfs_remove(struct dentry *dentry);
1642
1643 #else /* CONFIG_SECURITYFS */
1644
1645 static inline struct dentry *securityfs_create_dir(const char *name,
1646                                                    struct dentry *parent)
1647 {
1648         return ERR_PTR(-ENODEV);
1649 }
1650
1651 static inline struct dentry *securityfs_create_file(const char *name,
1652                                                     umode_t mode,
1653                                                     struct dentry *parent,
1654                                                     void *data,
1655                                                     const struct file_operations *fops)
1656 {
1657         return ERR_PTR(-ENODEV);
1658 }
1659
1660 static inline void securityfs_remove(struct dentry *dentry)
1661 {}
1662
1663 #endif
1664
1665 #ifdef CONFIG_SECURITY
1666
1667 static inline char *alloc_secdata(void)
1668 {
1669         return (char *)get_zeroed_page(GFP_KERNEL);
1670 }
1671
1672 static inline void free_secdata(void *secdata)
1673 {
1674         free_page((unsigned long)secdata);
1675 }
1676
1677 #else
1678
1679 static inline char *alloc_secdata(void)
1680 {
1681         return (char *)1;
1682 }
1683
1684 static inline void free_secdata(void *secdata)
1685 { }
1686 #endif /* CONFIG_SECURITY */
1687
1688 #endif /* ! __LINUX_SECURITY_H */
1689