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  * Copyright (C) 2016 Mellanox Techonologies
  10  *
  11  *      This program is free software; you can redistribute it and/or modify
  12  *      it under the terms of the GNU General Public License as published by
  13  *      the Free Software Foundation; either version 2 of the License, or
  14  *      (at your option) any later version.
  15  *
  16  *      Due to this file being licensed under the GPL there is controversy over
  17  *      whether this permits you to write a module that #includes this file
  18  *      without placing your module under the GPL.  Please consult a lawyer for
  19  *      advice before doing this.
  20  *
  21  */
  22
  23 #ifndef __LINUX_SECURITY_H
  24 #define __LINUX_SECURITY_H
  25
  26 #include <linux/key.h>
  27 #include <linux/capability.h>
  28 #include <linux/fs.h>
  29 #include <linux/slab.h>
  30 #include <linux/err.h>
  31 #include <linux/string.h>
  32 #include <linux/mm.h>
  33 #include <linux/fs.h>
  34
  35 struct linux_binprm;
  36 struct cred;
  37 struct rlimit;
  38 struct siginfo;
  39 struct sem_array;
  40 struct sembuf;
  41 struct kern_ipc_perm;
  42 struct audit_context;
  43 struct super_block;
  44 struct inode;
  45 struct dentry;
  46 struct file;
  47 struct vfsmount;
  48 struct path;
  49 struct qstr;
  50 struct iattr;
  51 struct fown_struct;
  52 struct file_operations;
  53 struct shmid_kernel;
  54 struct msg_msg;
  55 struct msg_queue;
  56 struct xattr;
  57 struct xfrm_sec_ctx;
  58 struct mm_struct;
  59
  60 /* If capable should audit the security request */
  61 #define SECURITY_CAP_NOAUDIT 0
  62 #define SECURITY_CAP_AUDIT 1
  63
  64 /* LSM Agnostic defines for sb_set_mnt_opts */
  65 #define SECURITY_LSM_NATIVE_LABELS      1
  66
  67 struct ctl_table;
  68 struct audit_krule;
  69 struct user_namespace;
  70 struct timezone;
  71
  72 enum lsm_event {
  73         LSM_POLICY_CHANGE,
  74 };
  75
  76 /* These functions are in security/commoncap.c */
  77 extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
  78                        int cap, int audit);
  79 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz);
  80 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
  81 extern int cap_ptrace_traceme(struct task_struct *parent);
  82 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
  83 extern int cap_capset(struct cred *new, const struct cred *old,
  84                       const kernel_cap_t *effective,
  85                       const kernel_cap_t *inheritable,
  86                       const kernel_cap_t *permitted);
  87 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
  88 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
  89                               const void *value, size_t size, int flags);
  90 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
  91 extern int cap_inode_need_killpriv(struct dentry *dentry);
  92 extern int cap_inode_killpriv(struct dentry *dentry);
  93 extern int cap_mmap_addr(unsigned long addr);
  94 extern int cap_mmap_file(struct file *file, unsigned long reqprot,
  95                          unsigned long prot, unsigned long flags);
  96 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
  97 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
  98                           unsigned long arg4, unsigned long arg5);
  99 extern int cap_task_setscheduler(struct task_struct *p);
 100 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
 101 extern int cap_task_setnice(struct task_struct *p, int nice);
 102 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
 103
 104 struct msghdr;
 105 struct sk_buff;
 106 struct sock;
 107 struct sockaddr;
 108 struct socket;
 109 struct flowi;
 110 struct dst_entry;
 111 struct xfrm_selector;
 112 struct xfrm_policy;
 113 struct xfrm_state;
 114 struct xfrm_user_sec_ctx;
 115 struct seq_file;
 116
 117 #ifdef CONFIG_MMU
 118 extern unsigned long mmap_min_addr;
 119 extern unsigned long dac_mmap_min_addr;
 120 #else
 121 #define mmap_min_addr           0UL
 122 #define dac_mmap_min_addr       0UL
 123 #endif
 124
 125 /*
 126  * Values used in the task_security_ops calls
 127  */
 128 /* setuid or setgid, id0 == uid or gid */
 129 #define LSM_SETID_ID    1
 130
 131 /* setreuid or setregid, id0 == real, id1 == eff */
 132 #define LSM_SETID_RE    2
 133
 134 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
 135 #define LSM_SETID_RES   4
 136
 137 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
 138 #define LSM_SETID_FS    8
 139
 140 /* Flags for security_task_prlimit(). */
 141 #define LSM_PRLIMIT_READ  1
 142 #define LSM_PRLIMIT_WRITE 2
 143
 144 /* forward declares to avoid warnings */
 145 struct sched_param;
 146 struct request_sock;
 147
 148 /* bprm->unsafe reasons */
 149 #define LSM_UNSAFE_SHARE        1
 150 #define LSM_UNSAFE_PTRACE       2
 151 #define LSM_UNSAFE_NO_NEW_PRIVS 4
 152
 153 #ifdef CONFIG_MMU
 154 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
 155                                  void __user *buffer, size_t *lenp, loff_t *ppos);
 156 #endif
 157
 158 /* security_inode_init_security callback function to write xattrs */
 159 typedef int (*initxattrs) (struct inode *inode,
 160                            const struct xattr *xattr_array, void *fs_data);
 161
 162 #ifdef CONFIG_SECURITY
 163
 164 struct security_mnt_opts {
 165         char **mnt_opts;
 166         int *mnt_opts_flags;
 167         int num_mnt_opts;
 168 };
 169
 170 int call_lsm_notifier(enum lsm_event event, void *data);
 171 int register_lsm_notifier(struct notifier_block *nb);
 172 int unregister_lsm_notifier(struct notifier_block *nb);
 173
 174 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
 175 {
 176         opts->mnt_opts = NULL;
 177         opts->mnt_opts_flags = NULL;
 178         opts->num_mnt_opts = 0;
 179 }
 180
 181 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
 182 {
 183         int i;
 184         if (opts->mnt_opts)
 185                 for (i = 0; i < opts->num_mnt_opts; i++)
 186                         kfree(opts->mnt_opts[i]);
 187         kfree(opts->mnt_opts);
 188         opts->mnt_opts = NULL;
 189         kfree(opts->mnt_opts_flags);
 190         opts->mnt_opts_flags = NULL;
 191         opts->num_mnt_opts = 0;
 192 }
 193
 194 /* prototypes */
 195 extern int security_init(void);
 196
 197 /* Security operations */
 198 int security_binder_set_context_mgr(struct task_struct *mgr);
 199 int security_binder_transaction(struct task_struct *from,
 200                                 struct task_struct *to);
 201 int security_binder_transfer_binder(struct task_struct *from,
 202                                     struct task_struct *to);
 203 int security_binder_transfer_file(struct task_struct *from,
 204                                   struct task_struct *to, struct file *file);
 205 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
 206 int security_ptrace_traceme(struct task_struct *parent);
 207 int security_capget(struct task_struct *target,
 208                     kernel_cap_t *effective,
 209                     kernel_cap_t *inheritable,
 210                     kernel_cap_t *permitted);
 211 int security_capset(struct cred *new, const struct cred *old,
 212                     const kernel_cap_t *effective,
 213                     const kernel_cap_t *inheritable,
 214                     const kernel_cap_t *permitted);
 215 int security_capable(const struct cred *cred, struct user_namespace *ns,
 216                         int cap);
 217 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
 218                              int cap);
 219 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
 220 int security_quota_on(struct dentry *dentry);
 221 int security_syslog(int type);
 222 int security_settime64(const struct timespec64 *ts, const struct timezone *tz);
 223 static inline int security_settime(const struct timespec *ts, const struct timezone *tz)
 224 {
 225         struct timespec64 ts64 = timespec_to_timespec64(*ts);
 226
 227         return security_settime64(&ts64, tz);
 228 }
 229 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
 230 int security_bprm_set_creds(struct linux_binprm *bprm);
 231 int security_bprm_check(struct linux_binprm *bprm);
 232 void security_bprm_committing_creds(struct linux_binprm *bprm);
 233 void security_bprm_committed_creds(struct linux_binprm *bprm);
 234 int security_sb_alloc(struct super_block *sb);
 235 void security_sb_free(struct super_block *sb);
 236 int security_sb_copy_data(char *orig, char *copy);
 237 int security_sb_remount(struct super_block *sb, void *data);
 238 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
 239 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
 240 int security_sb_statfs(struct dentry *dentry);
 241 int security_sb_mount(const char *dev_name, const struct path *path,
 242                       const char *type, unsigned long flags, void *data);
 243 int security_sb_umount(struct vfsmount *mnt, int flags);
 244 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path);
 245 int security_sb_set_mnt_opts(struct super_block *sb,
 246                                 struct security_mnt_opts *opts,
 247                                 unsigned long kern_flags,
 248                                 unsigned long *set_kern_flags);
 249 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 250                                 struct super_block *newsb,
 251                                 unsigned long kern_flags,
 252                                 unsigned long *set_kern_flags);
 253 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
 254 int security_dentry_init_security(struct dentry *dentry, int mode,
 255                                         const struct qstr *name, void **ctx,
 256                                         u32 *ctxlen);
 257 int security_dentry_create_files_as(struct dentry *dentry, int mode,
 258                                         struct qstr *name,
 259                                         const struct cred *old,
 260                                         struct cred *new);
 261
 262 int security_inode_alloc(struct inode *inode);
 263 void security_inode_free(struct inode *inode);
 264 int security_inode_init_security(struct inode *inode, struct inode *dir,
 265                                  const struct qstr *qstr,
 266                                  initxattrs initxattrs, void *fs_data);
 267 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
 268                                      const struct qstr *qstr, const char **name,
 269                                      void **value, size_t *len);
 270 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
 271 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 272                          struct dentry *new_dentry);
 273 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
 274 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 275                            const char *old_name);
 276 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
 277 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
 278 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
 279 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 280                           struct inode *new_dir, struct dentry *new_dentry,
 281                           unsigned int flags);
 282 int security_inode_readlink(struct dentry *dentry);
 283 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
 284                                bool rcu);
 285 int security_inode_permission(struct inode *inode, int mask);
 286 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
 287 int security_inode_getattr(const struct path *path);
 288 int security_inode_setxattr(struct dentry *dentry, const char *name,
 289                             const void *value, size_t size, int flags);
 290 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 291                                   const void *value, size_t size, int flags);
 292 int security_inode_getxattr(struct dentry *dentry, const char *name);
 293 int security_inode_listxattr(struct dentry *dentry);
 294 int security_inode_removexattr(struct dentry *dentry, const char *name);
 295 int security_inode_need_killpriv(struct dentry *dentry);
 296 int security_inode_killpriv(struct dentry *dentry);
 297 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc);
 298 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
 299 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
 300 void security_inode_getsecid(struct inode *inode, u32 *secid);
 301 int security_inode_copy_up(struct dentry *src, struct cred **new);
 302 int security_inode_copy_up_xattr(const char *name);
 303 int security_file_permission(struct file *file, int mask);
 304 int security_file_alloc(struct file *file);
 305 void security_file_free(struct file *file);
 306 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
 307 int security_mmap_file(struct file *file, unsigned long prot,
 308                         unsigned long flags);
 309 int security_mmap_addr(unsigned long addr);
 310 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 311                            unsigned long prot);
 312 int security_file_lock(struct file *file, unsigned int cmd);
 313 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
 314 void security_file_set_fowner(struct file *file);
 315 int security_file_send_sigiotask(struct task_struct *tsk,
 316                                  struct fown_struct *fown, int sig);
 317 int security_file_receive(struct file *file);
 318 int security_file_open(struct file *file, const struct cred *cred);
 319 int security_task_create(unsigned long clone_flags);
 320 int security_task_alloc(struct task_struct *task, unsigned long clone_flags);
 321 void security_task_free(struct task_struct *task);
 322 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
 323 void security_cred_free(struct cred *cred);
 324 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
 325 void security_transfer_creds(struct cred *new, const struct cred *old);
 326 int security_kernel_act_as(struct cred *new, u32 secid);
 327 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
 328 int security_kernel_module_request(char *kmod_name);
 329 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id);
 330 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
 331                                    enum kernel_read_file_id id);
 332 int security_task_fix_setuid(struct cred *new, const struct cred *old,
 333                              int flags);
 334 int security_task_setpgid(struct task_struct *p, pid_t pgid);
 335 int security_task_getpgid(struct task_struct *p);
 336 int security_task_getsid(struct task_struct *p);
 337 void security_task_getsecid(struct task_struct *p, u32 *secid);
 338 int security_task_setnice(struct task_struct *p, int nice);
 339 int security_task_setioprio(struct task_struct *p, int ioprio);
 340 int security_task_getioprio(struct task_struct *p);
 341 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
 342                           unsigned int flags);
 343 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
 344                 struct rlimit *new_rlim);
 345 int security_task_setscheduler(struct task_struct *p);
 346 int security_task_getscheduler(struct task_struct *p);
 347 int security_task_movememory(struct task_struct *p);
 348 int security_task_kill(struct task_struct *p, struct siginfo *info,
 349                         int sig, u32 secid);
 350 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 351                         unsigned long arg4, unsigned long arg5);
 352 void security_task_to_inode(struct task_struct *p, struct inode *inode);
 353 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
 354 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
 355 int security_msg_msg_alloc(struct msg_msg *msg);
 356 void security_msg_msg_free(struct msg_msg *msg);
 357 int security_msg_queue_alloc(struct msg_queue *msq);
 358 void security_msg_queue_free(struct msg_queue *msq);
 359 int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
 360 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
 361 int security_msg_queue_msgsnd(struct msg_queue *msq,
 362                               struct msg_msg *msg, int msqflg);
 363 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
 364                               struct task_struct *target, long type, int mode);
 365 int security_shm_alloc(struct shmid_kernel *shp);
 366 void security_shm_free(struct shmid_kernel *shp);
 367 int security_shm_associate(struct shmid_kernel *shp, int shmflg);
 368 int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
 369 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
 370 int security_sem_alloc(struct sem_array *sma);
 371 void security_sem_free(struct sem_array *sma);
 372 int security_sem_associate(struct sem_array *sma, int semflg);
 373 int security_sem_semctl(struct sem_array *sma, int cmd);
 374 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
 375                         unsigned nsops, int alter);
 376 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
 377 int security_getprocattr(struct task_struct *p, char *name, char **value);
 378 int security_setprocattr(const char *name, void *value, size_t size);
 379 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
 380 int security_ismaclabel(const char *name);
 381 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
 382 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
 383 void security_release_secctx(char *secdata, u32 seclen);
 384
 385 void security_inode_invalidate_secctx(struct inode *inode);
 386 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
 387 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
 388 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
 389 #else /* CONFIG_SECURITY */
 390 struct security_mnt_opts {
 391 };
 392
 393 static inline int call_lsm_notifier(enum lsm_event event, void *data)
 394 {
 395         return 0;
 396 }
 397
 398 static inline int register_lsm_notifier(struct notifier_block *nb)
 399 {
 400         return 0;
 401 }
 402
 403 static inline  int unregister_lsm_notifier(struct notifier_block *nb)
 404 {
 405         return 0;
 406 }
 407
 408 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
 409 {
 410 }
 411
 412 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
 413 {
 414 }
 415
 416 /*
 417  * This is the default capabilities functionality.  Most of these functions
 418  * are just stubbed out, but a few must call the proper capable code.
 419  */
 420
 421 static inline int security_init(void)
 422 {
 423         return 0;
 424 }
 425
 426 static inline int security_binder_set_context_mgr(struct task_struct *mgr)
 427 {
 428         return 0;
 429 }
 430
 431 static inline int security_binder_transaction(struct task_struct *from,
 432                                               struct task_struct *to)
 433 {
 434         return 0;
 435 }
 436
 437 static inline int security_binder_transfer_binder(struct task_struct *from,
 438                                                   struct task_struct *to)
 439 {
 440         return 0;
 441 }
 442
 443 static inline int security_binder_transfer_file(struct task_struct *from,
 444                                                 struct task_struct *to,
 445                                                 struct file *file)
 446 {
 447         return 0;
 448 }
 449
 450 static inline int security_ptrace_access_check(struct task_struct *child,
 451                                              unsigned int mode)
 452 {
 453         return cap_ptrace_access_check(child, mode);
 454 }
 455
 456 static inline int security_ptrace_traceme(struct task_struct *parent)
 457 {
 458         return cap_ptrace_traceme(parent);
 459 }
 460
 461 static inline int security_capget(struct task_struct *target,
 462                                    kernel_cap_t *effective,
 463                                    kernel_cap_t *inheritable,
 464                                    kernel_cap_t *permitted)
 465 {
 466         return cap_capget(target, effective, inheritable, permitted);
 467 }
 468
 469 static inline int security_capset(struct cred *new,
 470                                    const struct cred *old,
 471                                    const kernel_cap_t *effective,
 472                                    const kernel_cap_t *inheritable,
 473                                    const kernel_cap_t *permitted)
 474 {
 475         return cap_capset(new, old, effective, inheritable, permitted);
 476 }
 477
 478 static inline int security_capable(const struct cred *cred,
 479                                    struct user_namespace *ns, int cap)
 480 {
 481         return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT);
 482 }
 483
 484 static inline int security_capable_noaudit(const struct cred *cred,
 485                                            struct user_namespace *ns, int cap) {
 486         return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
 487 }
 488
 489 static inline int security_quotactl(int cmds, int type, int id,
 490                                      struct super_block *sb)
 491 {
 492         return 0;
 493 }
 494
 495 static inline int security_quota_on(struct dentry *dentry)
 496 {
 497         return 0;
 498 }
 499
 500 static inline int security_syslog(int type)
 501 {
 502         return 0;
 503 }
 504
 505 static inline int security_settime64(const struct timespec64 *ts,
 506                                      const struct timezone *tz)
 507 {
 508         return cap_settime(ts, tz);
 509 }
 510
 511 static inline int security_settime(const struct timespec *ts,
 512                                    const struct timezone *tz)
 513 {
 514         struct timespec64 ts64 = timespec_to_timespec64(*ts);
 515
 516         return cap_settime(&ts64, tz);
 517 }
 518
 519 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 520 {
 521         return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages));
 522 }
 523
 524 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
 525 {
 526         return cap_bprm_set_creds(bprm);
 527 }
 528
 529 static inline int security_bprm_check(struct linux_binprm *bprm)
 530 {
 531         return 0;
 532 }
 533
 534 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
 535 {
 536 }
 537
 538 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
 539 {
 540 }
 541
 542 static inline int security_sb_alloc(struct super_block *sb)
 543 {
 544         return 0;
 545 }
 546
 547 static inline void security_sb_free(struct super_block *sb)
 548 { }
 549
 550 static inline int security_sb_copy_data(char *orig, char *copy)
 551 {
 552         return 0;
 553 }
 554
 555 static inline int security_sb_remount(struct super_block *sb, void *data)
 556 {
 557         return 0;
 558 }
 559
 560 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
 561 {
 562         return 0;
 563 }
 564
 565 static inline int security_sb_show_options(struct seq_file *m,
 566                                            struct super_block *sb)
 567 {
 568         return 0;
 569 }
 570
 571 static inline int security_sb_statfs(struct dentry *dentry)
 572 {
 573         return 0;
 574 }
 575
 576 static inline int security_sb_mount(const char *dev_name, const struct path *path,
 577                                     const char *type, unsigned long flags,
 578                                     void *data)
 579 {
 580         return 0;
 581 }
 582
 583 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
 584 {
 585         return 0;
 586 }
 587
 588 static inline int security_sb_pivotroot(const struct path *old_path,
 589                                         const struct path *new_path)
 590 {
 591         return 0;
 592 }
 593
 594 static inline int security_sb_set_mnt_opts(struct super_block *sb,
 595                                            struct security_mnt_opts *opts,
 596                                            unsigned long kern_flags,
 597                                            unsigned long *set_kern_flags)
 598 {
 599         return 0;
 600 }
 601
 602 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 603                                               struct super_block *newsb,
 604                                               unsigned long kern_flags,
 605                                               unsigned long *set_kern_flags)
 606 {
 607         return 0;
 608 }
 609
 610 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
 611 {
 612         return 0;
 613 }
 614
 615 static inline int security_inode_alloc(struct inode *inode)
 616 {
 617         return 0;
 618 }
 619
 620 static inline void security_inode_free(struct inode *inode)
 621 { }
 622
 623 static inline int security_dentry_init_security(struct dentry *dentry,
 624                                                  int mode,
 625                                                  const struct qstr *name,
 626                                                  void **ctx,
 627                                                  u32 *ctxlen)
 628 {
 629         return -EOPNOTSUPP;
 630 }
 631
 632 static inline int security_dentry_create_files_as(struct dentry *dentry,
 633                                                   int mode, struct qstr *name,
 634                                                   const struct cred *old,
 635                                                   struct cred *new)
 636 {
 637         return 0;
 638 }
 639
 640
 641 static inline int security_inode_init_security(struct inode *inode,
 642                                                 struct inode *dir,
 643                                                 const struct qstr *qstr,
 644                                                 const initxattrs xattrs,
 645                                                 void *fs_data)
 646 {
 647         return 0;
 648 }
 649
 650 static inline int security_old_inode_init_security(struct inode *inode,
 651                                                    struct inode *dir,
 652                                                    const struct qstr *qstr,
 653                                                    const char **name,
 654                                                    void **value, size_t *len)
 655 {
 656         return -EOPNOTSUPP;
 657 }
 658
 659 static inline int security_inode_create(struct inode *dir,
 660                                          struct dentry *dentry,
 661                                          umode_t mode)
 662 {
 663         return 0;
 664 }
 665
 666 static inline int security_inode_link(struct dentry *old_dentry,
 667                                        struct inode *dir,
 668                                        struct dentry *new_dentry)
 669 {
 670         return 0;
 671 }
 672
 673 static inline int security_inode_unlink(struct inode *dir,
 674                                          struct dentry *dentry)
 675 {
 676         return 0;
 677 }
 678
 679 static inline int security_inode_symlink(struct inode *dir,
 680                                           struct dentry *dentry,
 681                                           const char *old_name)
 682 {
 683         return 0;
 684 }
 685
 686 static inline int security_inode_mkdir(struct inode *dir,
 687                                         struct dentry *dentry,
 688                                         int mode)
 689 {
 690         return 0;
 691 }
 692
 693 static inline int security_inode_rmdir(struct inode *dir,
 694                                         struct dentry *dentry)
 695 {
 696         return 0;
 697 }
 698
 699 static inline int security_inode_mknod(struct inode *dir,
 700                                         struct dentry *dentry,
 701                                         int mode, dev_t dev)
 702 {
 703         return 0;
 704 }
 705
 706 static inline int security_inode_rename(struct inode *old_dir,
 707                                          struct dentry *old_dentry,
 708                                          struct inode *new_dir,
 709                                          struct dentry *new_dentry,
 710                                          unsigned int flags)
 711 {
 712         return 0;
 713 }
 714
 715 static inline int security_inode_readlink(struct dentry *dentry)
 716 {
 717         return 0;
 718 }
 719
 720 static inline int security_inode_follow_link(struct dentry *dentry,
 721                                              struct inode *inode,
 722                                              bool rcu)
 723 {
 724         return 0;
 725 }
 726
 727 static inline int security_inode_permission(struct inode *inode, int mask)
 728 {
 729         return 0;
 730 }
 731
 732 static inline int security_inode_setattr(struct dentry *dentry,
 733                                           struct iattr *attr)
 734 {
 735         return 0;
 736 }
 737
 738 static inline int security_inode_getattr(const struct path *path)
 739 {
 740         return 0;
 741 }
 742
 743 static inline int security_inode_setxattr(struct dentry *dentry,
 744                 const char *name, const void *value, size_t size, int flags)
 745 {
 746         return cap_inode_setxattr(dentry, name, value, size, flags);
 747 }
 748
 749 static inline void security_inode_post_setxattr(struct dentry *dentry,
 750                 const char *name, const void *value, size_t size, int flags)
 751 { }
 752
 753 static inline int security_inode_getxattr(struct dentry *dentry,
 754                         const char *name)
 755 {
 756         return 0;
 757 }
 758
 759 static inline int security_inode_listxattr(struct dentry *dentry)
 760 {
 761         return 0;
 762 }
 763
 764 static inline int security_inode_removexattr(struct dentry *dentry,
 765                         const char *name)
 766 {
 767         return cap_inode_removexattr(dentry, name);
 768 }
 769
 770 static inline int security_inode_need_killpriv(struct dentry *dentry)
 771 {
 772         return cap_inode_need_killpriv(dentry);
 773 }
 774
 775 static inline int security_inode_killpriv(struct dentry *dentry)
 776 {
 777         return cap_inode_killpriv(dentry);
 778 }
 779
 780 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
 781 {
 782         return -EOPNOTSUPP;
 783 }
 784
 785 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 786 {
 787         return -EOPNOTSUPP;
 788 }
 789
 790 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 791 {
 792         return 0;
 793 }
 794
 795 static inline void security_inode_getsecid(struct inode *inode, u32 *secid)
 796 {
 797         *secid = 0;
 798 }
 799
 800 static inline int security_inode_copy_up(struct dentry *src, struct cred **new)
 801 {
 802         return 0;
 803 }
 804
 805 static inline int security_inode_copy_up_xattr(const char *name)
 806 {
 807         return -EOPNOTSUPP;
 808 }
 809
 810 static inline int security_file_permission(struct file *file, int mask)
 811 {
 812         return 0;
 813 }
 814
 815 static inline int security_file_alloc(struct file *file)
 816 {
 817         return 0;
 818 }
 819
 820 static inline void security_file_free(struct file *file)
 821 { }
 822
 823 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
 824                                       unsigned long arg)
 825 {
 826         return 0;
 827 }
 828
 829 static inline int security_mmap_file(struct file *file, unsigned long prot,
 830                                      unsigned long flags)
 831 {
 832         return 0;
 833 }
 834
 835 static inline int security_mmap_addr(unsigned long addr)
 836 {
 837         return cap_mmap_addr(addr);
 838 }
 839
 840 static inline int security_file_mprotect(struct vm_area_struct *vma,
 841                                          unsigned long reqprot,
 842                                          unsigned long prot)
 843 {
 844         return 0;
 845 }
 846
 847 static inline int security_file_lock(struct file *file, unsigned int cmd)
 848 {
 849         return 0;
 850 }
 851
 852 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
 853                                       unsigned long arg)
 854 {
 855         return 0;
 856 }
 857
 858 static inline void security_file_set_fowner(struct file *file)
 859 {
 860         return;
 861 }
 862
 863 static inline int security_file_send_sigiotask(struct task_struct *tsk,
 864                                                struct fown_struct *fown,
 865                                                int sig)
 866 {
 867         return 0;
 868 }
 869
 870 static inline int security_file_receive(struct file *file)
 871 {
 872         return 0;
 873 }
 874
 875 static inline int security_file_open(struct file *file,
 876                                      const struct cred *cred)
 877 {
 878         return 0;
 879 }
 880
 881 static inline int security_task_create(unsigned long clone_flags)
 882 {
 883         return 0;
 884 }
 885
 886 static inline int security_task_alloc(struct task_struct *task,
 887                                       unsigned long clone_flags)
 888 {
 889         return 0;
 890 }
 891
 892 static inline void security_task_free(struct task_struct *task)
 893 { }
 894
 895 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 896 {
 897         return 0;
 898 }
 899
 900 static inline void security_cred_free(struct cred *cred)
 901 { }
 902
 903 static inline int security_prepare_creds(struct cred *new,
 904                                          const struct cred *old,
 905                                          gfp_t gfp)
 906 {
 907         return 0;
 908 }
 909
 910 static inline void security_transfer_creds(struct cred *new,
 911                                            const struct cred *old)
 912 {
 913 }
 914
 915 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
 916 {
 917         return 0;
 918 }
 919
 920 static inline int security_kernel_create_files_as(struct cred *cred,
 921                                                   struct inode *inode)
 922 {
 923         return 0;
 924 }
 925
 926 static inline int security_kernel_module_request(char *kmod_name)
 927 {
 928         return 0;
 929 }
 930
 931 static inline int security_kernel_read_file(struct file *file,
 932                                             enum kernel_read_file_id id)
 933 {
 934         return 0;
 935 }
 936
 937 static inline int security_kernel_post_read_file(struct file *file,
 938                                                  char *buf, loff_t size,
 939                                                  enum kernel_read_file_id id)
 940 {
 941         return 0;
 942 }
 943
 944 static inline int security_task_fix_setuid(struct cred *new,
 945                                            const struct cred *old,
 946                                            int flags)
 947 {
 948         return cap_task_fix_setuid(new, old, flags);
 949 }
 950
 951 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
 952 {
 953         return 0;
 954 }
 955
 956 static inline int security_task_getpgid(struct task_struct *p)
 957 {
 958         return 0;
 959 }
 960
 961 static inline int security_task_getsid(struct task_struct *p)
 962 {
 963         return 0;
 964 }
 965
 966 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
 967 {
 968         *secid = 0;
 969 }
 970
 971 static inline int security_task_setnice(struct task_struct *p, int nice)
 972 {
 973         return cap_task_setnice(p, nice);
 974 }
 975
 976 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
 977 {
 978         return cap_task_setioprio(p, ioprio);
 979 }
 980
 981 static inline int security_task_getioprio(struct task_struct *p)
 982 {
 983         return 0;
 984 }
 985
 986 static inline int security_task_prlimit(const struct cred *cred,
 987                                         const struct cred *tcred,
 988                                         unsigned int flags)
 989 {
 990         return 0;
 991 }
 992
 993 static inline int security_task_setrlimit(struct task_struct *p,
 994                                           unsigned int resource,
 995                                           struct rlimit *new_rlim)
 996 {
 997         return 0;
 998 }
 999
1000 static inline int security_task_setscheduler(struct task_struct *p)
1001 {
1002         return cap_task_setscheduler(p);
1003 }
1004
1005 static inline int security_task_getscheduler(struct task_struct *p)
1006 {
1007         return 0;
1008 }
1009
1010 static inline int security_task_movememory(struct task_struct *p)
1011 {
1012         return 0;
1013 }
1014
1015 static inline int security_task_kill(struct task_struct *p,
1016                                      struct siginfo *info, int sig,
1017                                      u32 secid)
1018 {
1019         return 0;
1020 }
1021
1022 static inline int security_task_prctl(int option, unsigned long arg2,
1023                                       unsigned long arg3,
1024                                       unsigned long arg4,
1025                                       unsigned long arg5)
1026 {
1027         return cap_task_prctl(option, arg2, arg3, arg4, arg5);
1028 }
1029
1030 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
1031 { }
1032
1033 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
1034                                           short flag)
1035 {
1036         return 0;
1037 }
1038
1039 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1040 {
1041         *secid = 0;
1042 }
1043
1044 static inline int security_msg_msg_alloc(struct msg_msg *msg)
1045 {
1046         return 0;
1047 }
1048
1049 static inline void security_msg_msg_free(struct msg_msg *msg)
1050 { }
1051
1052 static inline int security_msg_queue_alloc(struct msg_queue *msq)
1053 {
1054         return 0;
1055 }
1056
1057 static inline void security_msg_queue_free(struct msg_queue *msq)
1058 { }
1059
1060 static inline int security_msg_queue_associate(struct msg_queue *msq,
1061                                                int msqflg)
1062 {
1063         return 0;
1064 }
1065
1066 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
1067 {
1068         return 0;
1069 }
1070
1071 static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
1072                                             struct msg_msg *msg, int msqflg)
1073 {
1074         return 0;
1075 }
1076
1077 static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
1078                                             struct msg_msg *msg,
1079                                             struct task_struct *target,
1080                                             long type, int mode)
1081 {
1082         return 0;
1083 }
1084
1085 static inline int security_shm_alloc(struct shmid_kernel *shp)
1086 {
1087         return 0;
1088 }
1089
1090 static inline void security_shm_free(struct shmid_kernel *shp)
1091 { }
1092
1093 static inline int security_shm_associate(struct shmid_kernel *shp,
1094                                          int shmflg)
1095 {
1096         return 0;
1097 }
1098
1099 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
1100 {
1101         return 0;
1102 }
1103
1104 static inline int security_shm_shmat(struct shmid_kernel *shp,
1105                                      char __user *shmaddr, int shmflg)
1106 {
1107         return 0;
1108 }
1109
1110 static inline int security_sem_alloc(struct sem_array *sma)
1111 {
1112         return 0;
1113 }
1114
1115 static inline void security_sem_free(struct sem_array *sma)
1116 { }
1117
1118 static inline int security_sem_associate(struct sem_array *sma, int semflg)
1119 {
1120         return 0;
1121 }
1122
1123 static inline int security_sem_semctl(struct sem_array *sma, int cmd)
1124 {
1125         return 0;
1126 }
1127
1128 static inline int security_sem_semop(struct sem_array *sma,
1129                                      struct sembuf *sops, unsigned nsops,
1130                                      int alter)
1131 {
1132         return 0;
1133 }
1134
1135 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1136 { }
1137
1138 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
1139 {
1140         return -EINVAL;
1141 }
1142
1143 static inline int security_setprocattr(char *name, void *value, size_t size)
1144 {
1145         return -EINVAL;
1146 }
1147
1148 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1149 {
1150         return 0;
1151 }
1152
1153 static inline int security_ismaclabel(const char *name)
1154 {
1155         return 0;
1156 }
1157
1158 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1159 {
1160         return -EOPNOTSUPP;
1161 }
1162
1163 static inline int security_secctx_to_secid(const char *secdata,
1164                                            u32 seclen,
1165                                            u32 *secid)
1166 {
1167         return -EOPNOTSUPP;
1168 }
1169
1170 static inline void security_release_secctx(char *secdata, u32 seclen)
1171 {
1172 }
1173
1174 static inline void security_inode_invalidate_secctx(struct inode *inode)
1175 {
1176 }
1177
1178 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1179 {
1180         return -EOPNOTSUPP;
1181 }
1182 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1183 {
1184         return -EOPNOTSUPP;
1185 }
1186 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1187 {
1188         return -EOPNOTSUPP;
1189 }
1190 #endif  /* CONFIG_SECURITY */
1191
1192 #ifdef CONFIG_SECURITY_NETWORK
1193
1194 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
1195 int security_unix_may_send(struct socket *sock,  struct socket *other);
1196 int security_socket_create(int family, int type, int protocol, int kern);
1197 int security_socket_post_create(struct socket *sock, int family,
1198                                 int type, int protocol, int kern);
1199 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
1200 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
1201 int security_socket_listen(struct socket *sock, int backlog);
1202 int security_socket_accept(struct socket *sock, struct socket *newsock);
1203 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
1204 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1205                             int size, int flags);
1206 int security_socket_getsockname(struct socket *sock);
1207 int security_socket_getpeername(struct socket *sock);
1208 int security_socket_getsockopt(struct socket *sock, int level, int optname);
1209 int security_socket_setsockopt(struct socket *sock, int level, int optname);
1210 int security_socket_shutdown(struct socket *sock, int how);
1211 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
1212 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1213                                       int __user *optlen, unsigned len);
1214 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
1215 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
1216 void security_sk_free(struct sock *sk);
1217 void security_sk_clone(const struct sock *sk, struct sock *newsk);
1218 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
1219 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
1220 void security_sock_graft(struct sock*sk, struct socket *parent);
1221 int security_inet_conn_request(struct sock *sk,
1222                         struct sk_buff *skb, struct request_sock *req);
1223 void security_inet_csk_clone(struct sock *newsk,
1224                         const struct request_sock *req);
1225 void security_inet_conn_established(struct sock *sk,
1226                         struct sk_buff *skb);
1227 int security_secmark_relabel_packet(u32 secid);
1228 void security_secmark_refcount_inc(void);
1229 void security_secmark_refcount_dec(void);
1230 int security_tun_dev_alloc_security(void **security);
1231 void security_tun_dev_free_security(void *security);
1232 int security_tun_dev_create(void);
1233 int security_tun_dev_attach_queue(void *security);
1234 int security_tun_dev_attach(struct sock *sk, void *security);
1235 int security_tun_dev_open(void *security);
1236
1237 #else   /* CONFIG_SECURITY_NETWORK */
1238 static inline int security_unix_stream_connect(struct sock *sock,
1239                                                struct sock *other,
1240                                                struct sock *newsk)
1241 {
1242         return 0;
1243 }
1244
1245 static inline int security_unix_may_send(struct socket *sock,
1246                                          struct socket *other)
1247 {
1248         return 0;
1249 }
1250
1251 static inline int security_socket_create(int family, int type,
1252                                          int protocol, int kern)
1253 {
1254         return 0;
1255 }
1256
1257 static inline int security_socket_post_create(struct socket *sock,
1258                                               int family,
1259                                               int type,
1260                                               int protocol, int kern)
1261 {
1262         return 0;
1263 }
1264
1265 static inline int security_socket_bind(struct socket *sock,
1266                                        struct sockaddr *address,
1267                                        int addrlen)
1268 {
1269         return 0;
1270 }
1271
1272 static inline int security_socket_connect(struct socket *sock,
1273                                           struct sockaddr *address,
1274                                           int addrlen)
1275 {
1276         return 0;
1277 }
1278
1279 static inline int security_socket_listen(struct socket *sock, int backlog)
1280 {
1281         return 0;
1282 }
1283
1284 static inline int security_socket_accept(struct socket *sock,
1285                                          struct socket *newsock)
1286 {
1287         return 0;
1288 }
1289
1290 static inline int security_socket_sendmsg(struct socket *sock,
1291                                           struct msghdr *msg, int size)
1292 {
1293         return 0;
1294 }
1295
1296 static inline int security_socket_recvmsg(struct socket *sock,
1297                                           struct msghdr *msg, int size,
1298                                           int flags)
1299 {
1300         return 0;
1301 }
1302
1303 static inline int security_socket_getsockname(struct socket *sock)
1304 {
1305         return 0;
1306 }
1307
1308 static inline int security_socket_getpeername(struct socket *sock)
1309 {
1310         return 0;
1311 }
1312
1313 static inline int security_socket_getsockopt(struct socket *sock,
1314                                              int level, int optname)
1315 {
1316         return 0;
1317 }
1318
1319 static inline int security_socket_setsockopt(struct socket *sock,
1320                                              int level, int optname)
1321 {
1322         return 0;
1323 }
1324
1325 static inline int security_socket_shutdown(struct socket *sock, int how)
1326 {
1327         return 0;
1328 }
1329 static inline int security_sock_rcv_skb(struct sock *sk,
1330                                         struct sk_buff *skb)
1331 {
1332         return 0;
1333 }
1334
1335 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1336                                                     int __user *optlen, unsigned len)
1337 {
1338         return -ENOPROTOOPT;
1339 }
1340
1341 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1342 {
1343         return -ENOPROTOOPT;
1344 }
1345
1346 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1347 {
1348         return 0;
1349 }
1350
1351 static inline void security_sk_free(struct sock *sk)
1352 {
1353 }
1354
1355 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
1356 {
1357 }
1358
1359 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1360 {
1361 }
1362
1363 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1364 {
1365 }
1366
1367 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
1368 {
1369 }
1370
1371 static inline int security_inet_conn_request(struct sock *sk,
1372                         struct sk_buff *skb, struct request_sock *req)
1373 {
1374         return 0;
1375 }
1376
1377 static inline void security_inet_csk_clone(struct sock *newsk,
1378                         const struct request_sock *req)
1379 {
1380 }
1381
1382 static inline void security_inet_conn_established(struct sock *sk,
1383                         struct sk_buff *skb)
1384 {
1385 }
1386
1387 static inline int security_secmark_relabel_packet(u32 secid)
1388 {
1389         return 0;
1390 }
1391
1392 static inline void security_secmark_refcount_inc(void)
1393 {
1394 }
1395
1396 static inline void security_secmark_refcount_dec(void)
1397 {
1398 }
1399
1400 static inline int security_tun_dev_alloc_security(void **security)
1401 {
1402         return 0;
1403 }
1404
1405 static inline void security_tun_dev_free_security(void *security)
1406 {
1407 }
1408
1409 static inline int security_tun_dev_create(void)
1410 {
1411         return 0;
1412 }
1413
1414 static inline int security_tun_dev_attach_queue(void *security)
1415 {
1416         return 0;
1417 }
1418
1419 static inline int security_tun_dev_attach(struct sock *sk, void *security)
1420 {
1421         return 0;
1422 }
1423
1424 static inline int security_tun_dev_open(void *security)
1425 {
1426         return 0;
1427 }
1428 #endif  /* CONFIG_SECURITY_NETWORK */
1429
1430 #ifdef CONFIG_SECURITY_INFINIBAND
1431 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey);
1432 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num);
1433 int security_ib_alloc_security(void **sec);
1434 void security_ib_free_security(void *sec);
1435 #else   /* CONFIG_SECURITY_INFINIBAND */
1436 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
1437 {
1438         return 0;
1439 }
1440
1441 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
1442 {
1443         return 0;
1444 }
1445
1446 static inline int security_ib_alloc_security(void **sec)
1447 {
1448         return 0;
1449 }
1450
1451 static inline void security_ib_free_security(void *sec)
1452 {
1453 }
1454 #endif  /* CONFIG_SECURITY_INFINIBAND */
1455
1456 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1457
1458 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1459                                struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
1460 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
1461 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
1462 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
1463 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
1464 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1465                                       struct xfrm_sec_ctx *polsec, u32 secid);
1466 int security_xfrm_state_delete(struct xfrm_state *x);
1467 void security_xfrm_state_free(struct xfrm_state *x);
1468 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1469 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1470                                        struct xfrm_policy *xp,
1471                                        const struct flowi *fl);
1472 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
1473 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
1474
1475 #else   /* CONFIG_SECURITY_NETWORK_XFRM */
1476
1477 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1478                                              struct xfrm_user_sec_ctx *sec_ctx,
1479                                              gfp_t gfp)
1480 {
1481         return 0;
1482 }
1483
1484 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
1485 {
1486         return 0;
1487 }
1488
1489 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1490 {
1491 }
1492
1493 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1494 {
1495         return 0;
1496 }
1497
1498 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
1499                                         struct xfrm_user_sec_ctx *sec_ctx)
1500 {
1501         return 0;
1502 }
1503
1504 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1505                                         struct xfrm_sec_ctx *polsec, u32 secid)
1506 {
1507         return 0;
1508 }
1509
1510 static inline void security_xfrm_state_free(struct xfrm_state *x)
1511 {
1512 }
1513
1514 static inline int security_xfrm_state_delete(struct xfrm_state *x)
1515 {
1516         return 0;
1517 }
1518
1519 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1520 {
1521         return 0;
1522 }
1523
1524 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1525                         struct xfrm_policy *xp, const struct flowi *fl)
1526 {
1527         return 1;
1528 }
1529
1530 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1531 {
1532         return 0;
1533 }
1534
1535 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1536 {
1537 }
1538
1539 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1540
1541 #ifdef CONFIG_SECURITY_PATH
1542 int security_path_unlink(const struct path *dir, struct dentry *dentry);
1543 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode);
1544 int security_path_rmdir(const struct path *dir, struct dentry *dentry);
1545 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
1546                         unsigned int dev);
1547 int security_path_truncate(const struct path *path);
1548 int security_path_symlink(const struct path *dir, struct dentry *dentry,
1549                           const char *old_name);
1550 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
1551                        struct dentry *new_dentry);
1552 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
1553                          const struct path *new_dir, struct dentry *new_dentry,
1554                          unsigned int flags);
1555 int security_path_chmod(const struct path *path, umode_t mode);
1556 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid);
1557 int security_path_chroot(const struct path *path);
1558 #else   /* CONFIG_SECURITY_PATH */
1559 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry)
1560 {
1561         return 0;
1562 }
1563
1564 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry,
1565                                       umode_t mode)
1566 {
1567         return 0;
1568 }
1569
1570 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry)
1571 {
1572         return 0;
1573 }
1574
1575 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry,
1576                                       umode_t mode, unsigned int dev)
1577 {
1578         return 0;
1579 }
1580
1581 static inline int security_path_truncate(const struct path *path)
1582 {
1583         return 0;
1584 }
1585
1586 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry,
1587                                         const char *old_name)
1588 {
1589         return 0;
1590 }
1591
1592 static inline int security_path_link(struct dentry *old_dentry,
1593                                      const struct path *new_dir,
1594                                      struct dentry *new_dentry)
1595 {
1596         return 0;
1597 }
1598
1599 static inline int security_path_rename(const struct path *old_dir,
1600                                        struct dentry *old_dentry,
1601                                        const struct path *new_dir,
1602                                        struct dentry *new_dentry,
1603                                        unsigned int flags)
1604 {
1605         return 0;
1606 }
1607
1608 static inline int security_path_chmod(const struct path *path, umode_t mode)
1609 {
1610         return 0;
1611 }
1612
1613 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
1614 {
1615         return 0;
1616 }
1617
1618 static inline int security_path_chroot(const struct path *path)
1619 {
1620         return 0;
1621 }
1622 #endif  /* CONFIG_SECURITY_PATH */
1623
1624 #ifdef CONFIG_KEYS
1625 #ifdef CONFIG_SECURITY
1626
1627 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
1628 void security_key_free(struct key *key);
1629 int security_key_permission(key_ref_t key_ref,
1630                             const struct cred *cred, unsigned perm);
1631 int security_key_getsecurity(struct key *key, char **_buffer);
1632
1633 #else
1634
1635 static inline int security_key_alloc(struct key *key,
1636                                      const struct cred *cred,
1637                                      unsigned long flags)
1638 {
1639         return 0;
1640 }
1641
1642 static inline void security_key_free(struct key *key)
1643 {
1644 }
1645
1646 static inline int security_key_permission(key_ref_t key_ref,
1647                                           const struct cred *cred,
1648                                           unsigned perm)
1649 {
1650         return 0;
1651 }
1652
1653 static inline int security_key_getsecurity(struct key *key, char **_buffer)
1654 {
1655         *_buffer = NULL;
1656         return 0;
1657 }
1658
1659 #endif
1660 #endif /* CONFIG_KEYS */
1661
1662 #ifdef CONFIG_AUDIT
1663 #ifdef CONFIG_SECURITY
1664 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
1665 int security_audit_rule_known(struct audit_krule *krule);
1666 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1667                               struct audit_context *actx);
1668 void security_audit_rule_free(void *lsmrule);
1669
1670 #else
1671
1672 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
1673                                            void **lsmrule)
1674 {
1675         return 0;
1676 }
1677
1678 static inline int security_audit_rule_known(struct audit_krule *krule)
1679 {
1680         return 0;
1681 }
1682
1683 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
1684                                    void *lsmrule, struct audit_context *actx)
1685 {
1686         return 0;
1687 }
1688
1689 static inline void security_audit_rule_free(void *lsmrule)
1690 { }
1691
1692 #endif /* CONFIG_SECURITY */
1693 #endif /* CONFIG_AUDIT */
1694
1695 #ifdef CONFIG_SECURITYFS
1696
1697 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
1698                                              struct dentry *parent, void *data,
1699                                              const struct file_operations *fops);
1700 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
1701 struct dentry *securityfs_create_symlink(const char *name,
1702                                          struct dentry *parent,
1703                                          const char *target,
1704                                          const struct inode_operations *iops);
1705 extern void securityfs_remove(struct dentry *dentry);
1706
1707 #else /* CONFIG_SECURITYFS */
1708
1709 static inline struct dentry *securityfs_create_dir(const char *name,
1710                                                    struct dentry *parent)
1711 {
1712         return ERR_PTR(-ENODEV);
1713 }
1714
1715 static inline struct dentry *securityfs_create_file(const char *name,
1716                                                     umode_t mode,
1717                                                     struct dentry *parent,
1718                                                     void *data,
1719                                                     const struct file_operations *fops)
1720 {
1721         return ERR_PTR(-ENODEV);
1722 }
1723
1724 static inline struct dentry *securityfs_create_symlink(const char *name,
1725                                         struct dentry *parent,
1726                                         const char *target,
1727                                         const struct inode_operations *iops)
1728 {
1729         return ERR_PTR(-ENODEV);
1730 }
1731
1732 static inline void securityfs_remove(struct dentry *dentry)
1733 {}
1734
1735 #endif
1736
1737 #ifdef CONFIG_SECURITY
1738
1739 static inline char *alloc_secdata(void)
1740 {
1741         return (char *)get_zeroed_page(GFP_KERNEL);
1742 }
1743
1744 static inline void free_secdata(void *secdata)
1745 {
1746         free_page((unsigned long)secdata);
1747 }
1748
1749 #else
1750
1751 static inline char *alloc_secdata(void)
1752 {
1753         return (char *)1;
1754 }
1755
1756 static inline void free_secdata(void *secdata)
1757 { }
1758 #endif /* CONFIG_SECURITY */
1759
1760 #endif /* ! __LINUX_SECURITY_H */
1761