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