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 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 msg_msg;
  53 struct xattr;
  54 struct xfrm_sec_ctx;
  55 struct mm_struct;
  56
  57 /* If capable should audit the security request */
  58 #define SECURITY_CAP_NOAUDIT 0
  59 #define SECURITY_CAP_AUDIT 1
  60
  61 /* LSM Agnostic defines for sb_set_mnt_opts */
  62 #define SECURITY_LSM_NATIVE_LABELS      1
  63
  64 struct ctl_table;
  65 struct audit_krule;
  66 struct user_namespace;
  67 struct timezone;
  68
  69 enum lsm_event {
  70         LSM_POLICY_CHANGE,
  71 };
  72
  73 /* These functions are in security/commoncap.c */
  74 extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
  75                        int cap, int audit);
  76 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz);
  77 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
  78 extern int cap_ptrace_traceme(struct task_struct *parent);
  79 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
  80 extern int cap_capset(struct cred *new, const struct cred *old,
  81                       const kernel_cap_t *effective,
  82                       const kernel_cap_t *inheritable,
  83                       const kernel_cap_t *permitted);
  84 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
  85 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
  86                               const void *value, size_t size, int flags);
  87 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
  88 extern int cap_inode_need_killpriv(struct dentry *dentry);
  89 extern int cap_inode_killpriv(struct dentry *dentry);
  90 extern int cap_inode_getsecurity(struct inode *inode, const char *name,
  91                                  void **buffer, bool alloc);
  92 extern int cap_mmap_addr(unsigned long addr);
  93 extern int cap_mmap_file(struct file *file, unsigned long reqprot,
  94                          unsigned long prot, unsigned long flags);
  95 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
  96 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
  97                           unsigned long arg4, unsigned long arg5);
  98 extern int cap_task_setscheduler(struct task_struct *p);
  99 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
 100 extern int cap_task_setnice(struct task_struct *p, int nice);
 101 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
 102
 103 struct msghdr;
 104 struct sk_buff;
 105 struct sock;
 106 struct sockaddr;
 107 struct socket;
 108 struct flowi;
 109 struct dst_entry;
 110 struct xfrm_selector;
 111 struct xfrm_policy;
 112 struct xfrm_state;
 113 struct xfrm_user_sec_ctx;
 114 struct seq_file;
 115 struct sctp_endpoint;
 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 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
 224 int security_bprm_set_creds(struct linux_binprm *bprm);
 225 int security_bprm_check(struct linux_binprm *bprm);
 226 void security_bprm_committing_creds(struct linux_binprm *bprm);
 227 void security_bprm_committed_creds(struct linux_binprm *bprm);
 228 int security_sb_alloc(struct super_block *sb);
 229 void security_sb_free(struct super_block *sb);
 230 int security_sb_copy_data(char *orig, char *copy);
 231 int security_sb_remount(struct super_block *sb, void *data);
 232 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
 233 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
 234 int security_sb_statfs(struct dentry *dentry);
 235 int security_sb_mount(const char *dev_name, const struct path *path,
 236                       const char *type, unsigned long flags, void *data);
 237 int security_sb_umount(struct vfsmount *mnt, int flags);
 238 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path);
 239 int security_sb_set_mnt_opts(struct super_block *sb,
 240                                 struct security_mnt_opts *opts,
 241                                 unsigned long kern_flags,
 242                                 unsigned long *set_kern_flags);
 243 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 244                                 struct super_block *newsb,
 245                                 unsigned long kern_flags,
 246                                 unsigned long *set_kern_flags);
 247 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
 248 int security_dentry_init_security(struct dentry *dentry, int mode,
 249                                         const struct qstr *name, void **ctx,
 250                                         u32 *ctxlen);
 251 int security_dentry_create_files_as(struct dentry *dentry, int mode,
 252                                         struct qstr *name,
 253                                         const struct cred *old,
 254                                         struct cred *new);
 255
 256 int security_inode_alloc(struct inode *inode);
 257 void security_inode_free(struct inode *inode);
 258 int security_inode_init_security(struct inode *inode, struct inode *dir,
 259                                  const struct qstr *qstr,
 260                                  initxattrs initxattrs, void *fs_data);
 261 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
 262                                      const struct qstr *qstr, const char **name,
 263                                      void **value, size_t *len);
 264 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
 265 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 266                          struct dentry *new_dentry);
 267 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
 268 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 269                            const char *old_name);
 270 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
 271 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
 272 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
 273 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 274                           struct inode *new_dir, struct dentry *new_dentry,
 275                           unsigned int flags);
 276 int security_inode_readlink(struct dentry *dentry);
 277 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
 278                                bool rcu);
 279 int security_inode_permission(struct inode *inode, int mask);
 280 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
 281 int security_inode_getattr(const struct path *path);
 282 int security_inode_setxattr(struct dentry *dentry, const char *name,
 283                             const void *value, size_t size, int flags);
 284 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 285                                   const void *value, size_t size, int flags);
 286 int security_inode_getxattr(struct dentry *dentry, const char *name);
 287 int security_inode_listxattr(struct dentry *dentry);
 288 int security_inode_removexattr(struct dentry *dentry, const char *name);
 289 int security_inode_need_killpriv(struct dentry *dentry);
 290 int security_inode_killpriv(struct dentry *dentry);
 291 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc);
 292 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
 293 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
 294 void security_inode_getsecid(struct inode *inode, u32 *secid);
 295 int security_inode_copy_up(struct dentry *src, struct cred **new);
 296 int security_inode_copy_up_xattr(const char *name);
 297 int security_file_permission(struct file *file, int mask);
 298 int security_file_alloc(struct file *file);
 299 void security_file_free(struct file *file);
 300 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
 301 int security_mmap_file(struct file *file, unsigned long prot,
 302                         unsigned long flags);
 303 int security_mmap_addr(unsigned long addr);
 304 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 305                            unsigned long prot);
 306 int security_file_lock(struct file *file, unsigned int cmd);
 307 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
 308 void security_file_set_fowner(struct file *file);
 309 int security_file_send_sigiotask(struct task_struct *tsk,
 310                                  struct fown_struct *fown, int sig);
 311 int security_file_receive(struct file *file);
 312 int security_file_open(struct file *file, const struct cred *cred);
 313 int security_task_alloc(struct task_struct *task, unsigned long clone_flags);
 314 void security_task_free(struct task_struct *task);
 315 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
 316 void security_cred_free(struct cred *cred);
 317 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
 318 void security_transfer_creds(struct cred *new, const struct cred *old);
 319 void security_cred_getsecid(const struct cred *c, u32 *secid);
 320 int security_kernel_act_as(struct cred *new, u32 secid);
 321 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
 322 int security_kernel_module_request(char *kmod_name);
 323 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id);
 324 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
 325                                    enum kernel_read_file_id id);
 326 int security_task_fix_setuid(struct cred *new, const struct cred *old,
 327                              int flags);
 328 int security_task_setpgid(struct task_struct *p, pid_t pgid);
 329 int security_task_getpgid(struct task_struct *p);
 330 int security_task_getsid(struct task_struct *p);
 331 void security_task_getsecid(struct task_struct *p, u32 *secid);
 332 int security_task_setnice(struct task_struct *p, int nice);
 333 int security_task_setioprio(struct task_struct *p, int ioprio);
 334 int security_task_getioprio(struct task_struct *p);
 335 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
 336                           unsigned int flags);
 337 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
 338                 struct rlimit *new_rlim);
 339 int security_task_setscheduler(struct task_struct *p);
 340 int security_task_getscheduler(struct task_struct *p);
 341 int security_task_movememory(struct task_struct *p);
 342 int security_task_kill(struct task_struct *p, struct siginfo *info,
 343                         int sig, const struct cred *cred);
 344 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 345                         unsigned long arg4, unsigned long arg5);
 346 void security_task_to_inode(struct task_struct *p, struct inode *inode);
 347 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
 348 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
 349 int security_msg_msg_alloc(struct msg_msg *msg);
 350 void security_msg_msg_free(struct msg_msg *msg);
 351 int security_msg_queue_alloc(struct kern_ipc_perm *msq);
 352 void security_msg_queue_free(struct kern_ipc_perm *msq);
 353 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg);
 354 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd);
 355 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
 356                               struct msg_msg *msg, int msqflg);
 357 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
 358                               struct task_struct *target, long type, int mode);
 359 int security_shm_alloc(struct kern_ipc_perm *shp);
 360 void security_shm_free(struct kern_ipc_perm *shp);
 361 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg);
 362 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd);
 363 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg);
 364 int security_sem_alloc(struct kern_ipc_perm *sma);
 365 void security_sem_free(struct kern_ipc_perm *sma);
 366 int security_sem_associate(struct kern_ipc_perm *sma, int semflg);
 367 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd);
 368 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
 369                         unsigned nsops, int alter);
 370 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
 371 int security_getprocattr(struct task_struct *p, char *name, char **value);
 372 int security_setprocattr(const char *name, void *value, size_t size);
 373 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
 374 int security_ismaclabel(const char *name);
 375 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
 376 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
 377 void security_release_secctx(char *secdata, u32 seclen);
 378
 379 void security_inode_invalidate_secctx(struct inode *inode);
 380 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
 381 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
 382 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
 383 #else /* CONFIG_SECURITY */
 384 struct security_mnt_opts {
 385 };
 386
 387 static inline int call_lsm_notifier(enum lsm_event event, void *data)
 388 {
 389         return 0;
 390 }
 391
 392 static inline int register_lsm_notifier(struct notifier_block *nb)
 393 {
 394         return 0;
 395 }
 396
 397 static inline  int unregister_lsm_notifier(struct notifier_block *nb)
 398 {
 399         return 0;
 400 }
 401
 402 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
 403 {
 404 }
 405
 406 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
 407 {
 408 }
 409
 410 /*
 411  * This is the default capabilities functionality.  Most of these functions
 412  * are just stubbed out, but a few must call the proper capable code.
 413  */
 414
 415 static inline int security_init(void)
 416 {
 417         return 0;
 418 }
 419
 420 static inline int security_binder_set_context_mgr(struct task_struct *mgr)
 421 {
 422         return 0;
 423 }
 424
 425 static inline int security_binder_transaction(struct task_struct *from,
 426                                               struct task_struct *to)
 427 {
 428         return 0;
 429 }
 430
 431 static inline int security_binder_transfer_binder(struct task_struct *from,
 432                                                   struct task_struct *to)
 433 {
 434         return 0;
 435 }
 436
 437 static inline int security_binder_transfer_file(struct task_struct *from,
 438                                                 struct task_struct *to,
 439                                                 struct file *file)
 440 {
 441         return 0;
 442 }
 443
 444 static inline int security_ptrace_access_check(struct task_struct *child,
 445                                              unsigned int mode)
 446 {
 447         return cap_ptrace_access_check(child, mode);
 448 }
 449
 450 static inline int security_ptrace_traceme(struct task_struct *parent)
 451 {
 452         return cap_ptrace_traceme(parent);
 453 }
 454
 455 static inline int security_capget(struct task_struct *target,
 456                                    kernel_cap_t *effective,
 457                                    kernel_cap_t *inheritable,
 458                                    kernel_cap_t *permitted)
 459 {
 460         return cap_capget(target, effective, inheritable, permitted);
 461 }
 462
 463 static inline int security_capset(struct cred *new,
 464                                    const struct cred *old,
 465                                    const kernel_cap_t *effective,
 466                                    const kernel_cap_t *inheritable,
 467                                    const kernel_cap_t *permitted)
 468 {
 469         return cap_capset(new, old, effective, inheritable, permitted);
 470 }
 471
 472 static inline int security_capable(const struct cred *cred,
 473                                    struct user_namespace *ns, int cap)
 474 {
 475         return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT);
 476 }
 477
 478 static inline int security_capable_noaudit(const struct cred *cred,
 479                                            struct user_namespace *ns, int cap) {
 480         return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
 481 }
 482
 483 static inline int security_quotactl(int cmds, int type, int id,
 484                                      struct super_block *sb)
 485 {
 486         return 0;
 487 }
 488
 489 static inline int security_quota_on(struct dentry *dentry)
 490 {
 491         return 0;
 492 }
 493
 494 static inline int security_syslog(int type)
 495 {
 496         return 0;
 497 }
 498
 499 static inline int security_settime64(const struct timespec64 *ts,
 500                                      const struct timezone *tz)
 501 {
 502         return cap_settime(ts, tz);
 503 }
 504
 505 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 506 {
 507         return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages));
 508 }
 509
 510 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
 511 {
 512         return cap_bprm_set_creds(bprm);
 513 }
 514
 515 static inline int security_bprm_check(struct linux_binprm *bprm)
 516 {
 517         return 0;
 518 }
 519
 520 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
 521 {
 522 }
 523
 524 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
 525 {
 526 }
 527
 528 static inline int security_sb_alloc(struct super_block *sb)
 529 {
 530         return 0;
 531 }
 532
 533 static inline void security_sb_free(struct super_block *sb)
 534 { }
 535
 536 static inline int security_sb_copy_data(char *orig, char *copy)
 537 {
 538         return 0;
 539 }
 540
 541 static inline int security_sb_remount(struct super_block *sb, void *data)
 542 {
 543         return 0;
 544 }
 545
 546 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
 547 {
 548         return 0;
 549 }
 550
 551 static inline int security_sb_show_options(struct seq_file *m,
 552                                            struct super_block *sb)
 553 {
 554         return 0;
 555 }
 556
 557 static inline int security_sb_statfs(struct dentry *dentry)
 558 {
 559         return 0;
 560 }
 561
 562 static inline int security_sb_mount(const char *dev_name, const struct path *path,
 563                                     const char *type, unsigned long flags,
 564                                     void *data)
 565 {
 566         return 0;
 567 }
 568
 569 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
 570 {
 571         return 0;
 572 }
 573
 574 static inline int security_sb_pivotroot(const struct path *old_path,
 575                                         const struct path *new_path)
 576 {
 577         return 0;
 578 }
 579
 580 static inline int security_sb_set_mnt_opts(struct super_block *sb,
 581                                            struct security_mnt_opts *opts,
 582                                            unsigned long kern_flags,
 583                                            unsigned long *set_kern_flags)
 584 {
 585         return 0;
 586 }
 587
 588 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 589                                               struct super_block *newsb,
 590                                               unsigned long kern_flags,
 591                                               unsigned long *set_kern_flags)
 592 {
 593         return 0;
 594 }
 595
 596 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
 597 {
 598         return 0;
 599 }
 600
 601 static inline int security_inode_alloc(struct inode *inode)
 602 {
 603         return 0;
 604 }
 605
 606 static inline void security_inode_free(struct inode *inode)
 607 { }
 608
 609 static inline int security_dentry_init_security(struct dentry *dentry,
 610                                                  int mode,
 611                                                  const struct qstr *name,
 612                                                  void **ctx,
 613                                                  u32 *ctxlen)
 614 {
 615         return -EOPNOTSUPP;
 616 }
 617
 618 static inline int security_dentry_create_files_as(struct dentry *dentry,
 619                                                   int mode, struct qstr *name,
 620                                                   const struct cred *old,
 621                                                   struct cred *new)
 622 {
 623         return 0;
 624 }
 625
 626
 627 static inline int security_inode_init_security(struct inode *inode,
 628                                                 struct inode *dir,
 629                                                 const struct qstr *qstr,
 630                                                 const initxattrs xattrs,
 631                                                 void *fs_data)
 632 {
 633         return 0;
 634 }
 635
 636 static inline int security_old_inode_init_security(struct inode *inode,
 637                                                    struct inode *dir,
 638                                                    const struct qstr *qstr,
 639                                                    const char **name,
 640                                                    void **value, size_t *len)
 641 {
 642         return -EOPNOTSUPP;
 643 }
 644
 645 static inline int security_inode_create(struct inode *dir,
 646                                          struct dentry *dentry,
 647                                          umode_t mode)
 648 {
 649         return 0;
 650 }
 651
 652 static inline int security_inode_link(struct dentry *old_dentry,
 653                                        struct inode *dir,
 654                                        struct dentry *new_dentry)
 655 {
 656         return 0;
 657 }
 658
 659 static inline int security_inode_unlink(struct inode *dir,
 660                                          struct dentry *dentry)
 661 {
 662         return 0;
 663 }
 664
 665 static inline int security_inode_symlink(struct inode *dir,
 666                                           struct dentry *dentry,
 667                                           const char *old_name)
 668 {
 669         return 0;
 670 }
 671
 672 static inline int security_inode_mkdir(struct inode *dir,
 673                                         struct dentry *dentry,
 674                                         int mode)
 675 {
 676         return 0;
 677 }
 678
 679 static inline int security_inode_rmdir(struct inode *dir,
 680                                         struct dentry *dentry)
 681 {
 682         return 0;
 683 }
 684
 685 static inline int security_inode_mknod(struct inode *dir,
 686                                         struct dentry *dentry,
 687                                         int mode, dev_t dev)
 688 {
 689         return 0;
 690 }
 691
 692 static inline int security_inode_rename(struct inode *old_dir,
 693                                          struct dentry *old_dentry,
 694                                          struct inode *new_dir,
 695                                          struct dentry *new_dentry,
 696                                          unsigned int flags)
 697 {
 698         return 0;
 699 }
 700
 701 static inline int security_inode_readlink(struct dentry *dentry)
 702 {
 703         return 0;
 704 }
 705
 706 static inline int security_inode_follow_link(struct dentry *dentry,
 707                                              struct inode *inode,
 708                                              bool rcu)
 709 {
 710         return 0;
 711 }
 712
 713 static inline int security_inode_permission(struct inode *inode, int mask)
 714 {
 715         return 0;
 716 }
 717
 718 static inline int security_inode_setattr(struct dentry *dentry,
 719                                           struct iattr *attr)
 720 {
 721         return 0;
 722 }
 723
 724 static inline int security_inode_getattr(const struct path *path)
 725 {
 726         return 0;
 727 }
 728
 729 static inline int security_inode_setxattr(struct dentry *dentry,
 730                 const char *name, const void *value, size_t size, int flags)
 731 {
 732         return cap_inode_setxattr(dentry, name, value, size, flags);
 733 }
 734
 735 static inline void security_inode_post_setxattr(struct dentry *dentry,
 736                 const char *name, const void *value, size_t size, int flags)
 737 { }
 738
 739 static inline int security_inode_getxattr(struct dentry *dentry,
 740                         const char *name)
 741 {
 742         return 0;
 743 }
 744
 745 static inline int security_inode_listxattr(struct dentry *dentry)
 746 {
 747         return 0;
 748 }
 749
 750 static inline int security_inode_removexattr(struct dentry *dentry,
 751                         const char *name)
 752 {
 753         return cap_inode_removexattr(dentry, name);
 754 }
 755
 756 static inline int security_inode_need_killpriv(struct dentry *dentry)
 757 {
 758         return cap_inode_need_killpriv(dentry);
 759 }
 760
 761 static inline int security_inode_killpriv(struct dentry *dentry)
 762 {
 763         return cap_inode_killpriv(dentry);
 764 }
 765
 766 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
 767 {
 768         return -EOPNOTSUPP;
 769 }
 770
 771 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 772 {
 773         return -EOPNOTSUPP;
 774 }
 775
 776 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 777 {
 778         return 0;
 779 }
 780
 781 static inline void security_inode_getsecid(struct inode *inode, u32 *secid)
 782 {
 783         *secid = 0;
 784 }
 785
 786 static inline int security_inode_copy_up(struct dentry *src, struct cred **new)
 787 {
 788         return 0;
 789 }
 790
 791 static inline int security_inode_copy_up_xattr(const char *name)
 792 {
 793         return -EOPNOTSUPP;
 794 }
 795
 796 static inline int security_file_permission(struct file *file, int mask)
 797 {
 798         return 0;
 799 }
 800
 801 static inline int security_file_alloc(struct file *file)
 802 {
 803         return 0;
 804 }
 805
 806 static inline void security_file_free(struct file *file)
 807 { }
 808
 809 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
 810                                       unsigned long arg)
 811 {
 812         return 0;
 813 }
 814
 815 static inline int security_mmap_file(struct file *file, unsigned long prot,
 816                                      unsigned long flags)
 817 {
 818         return 0;
 819 }
 820
 821 static inline int security_mmap_addr(unsigned long addr)
 822 {
 823         return cap_mmap_addr(addr);
 824 }
 825
 826 static inline int security_file_mprotect(struct vm_area_struct *vma,
 827                                          unsigned long reqprot,
 828                                          unsigned long prot)
 829 {
 830         return 0;
 831 }
 832
 833 static inline int security_file_lock(struct file *file, unsigned int cmd)
 834 {
 835         return 0;
 836 }
 837
 838 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
 839                                       unsigned long arg)
 840 {
 841         return 0;
 842 }
 843
 844 static inline void security_file_set_fowner(struct file *file)
 845 {
 846         return;
 847 }
 848
 849 static inline int security_file_send_sigiotask(struct task_struct *tsk,
 850                                                struct fown_struct *fown,
 851                                                int sig)
 852 {
 853         return 0;
 854 }
 855
 856 static inline int security_file_receive(struct file *file)
 857 {
 858         return 0;
 859 }
 860
 861 static inline int security_file_open(struct file *file,
 862                                      const struct cred *cred)
 863 {
 864         return 0;
 865 }
 866
 867 static inline int security_task_alloc(struct task_struct *task,
 868                                       unsigned long clone_flags)
 869 {
 870         return 0;
 871 }
 872
 873 static inline void security_task_free(struct task_struct *task)
 874 { }
 875
 876 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 877 {
 878         return 0;
 879 }
 880
 881 static inline void security_cred_free(struct cred *cred)
 882 { }
 883
 884 static inline int security_prepare_creds(struct cred *new,
 885                                          const struct cred *old,
 886                                          gfp_t gfp)
 887 {
 888         return 0;
 889 }
 890
 891 static inline void security_transfer_creds(struct cred *new,
 892                                            const struct cred *old)
 893 {
 894 }
 895
 896 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
 897 {
 898         return 0;
 899 }
 900
 901 static inline int security_kernel_create_files_as(struct cred *cred,
 902                                                   struct inode *inode)
 903 {
 904         return 0;
 905 }
 906
 907 static inline int security_kernel_module_request(char *kmod_name)
 908 {
 909         return 0;
 910 }
 911
 912 static inline int security_kernel_read_file(struct file *file,
 913                                             enum kernel_read_file_id id)
 914 {
 915         return 0;
 916 }
 917
 918 static inline int security_kernel_post_read_file(struct file *file,
 919                                                  char *buf, loff_t size,
 920                                                  enum kernel_read_file_id id)
 921 {
 922         return 0;
 923 }
 924
 925 static inline int security_task_fix_setuid(struct cred *new,
 926                                            const struct cred *old,
 927                                            int flags)
 928 {
 929         return cap_task_fix_setuid(new, old, flags);
 930 }
 931
 932 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
 933 {
 934         return 0;
 935 }
 936
 937 static inline int security_task_getpgid(struct task_struct *p)
 938 {
 939         return 0;
 940 }
 941
 942 static inline int security_task_getsid(struct task_struct *p)
 943 {
 944         return 0;
 945 }
 946
 947 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
 948 {
 949         *secid = 0;
 950 }
 951
 952 static inline int security_task_setnice(struct task_struct *p, int nice)
 953 {
 954         return cap_task_setnice(p, nice);
 955 }
 956
 957 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
 958 {
 959         return cap_task_setioprio(p, ioprio);
 960 }
 961
 962 static inline int security_task_getioprio(struct task_struct *p)
 963 {
 964         return 0;
 965 }
 966
 967 static inline int security_task_prlimit(const struct cred *cred,
 968                                         const struct cred *tcred,
 969                                         unsigned int flags)
 970 {
 971         return 0;
 972 }
 973
 974 static inline int security_task_setrlimit(struct task_struct *p,
 975                                           unsigned int resource,
 976                                           struct rlimit *new_rlim)
 977 {
 978         return 0;
 979 }
 980
 981 static inline int security_task_setscheduler(struct task_struct *p)
 982 {
 983         return cap_task_setscheduler(p);
 984 }
 985
 986 static inline int security_task_getscheduler(struct task_struct *p)
 987 {
 988         return 0;
 989 }
 990
 991 static inline int security_task_movememory(struct task_struct *p)
 992 {
 993         return 0;
 994 }
 995
 996 static inline int security_task_kill(struct task_struct *p,
 997                                      struct siginfo *info, int sig,
 998                                      const struct cred *cred)
 999 {
1000         return 0;
1001 }
1002
1003 static inline int security_task_prctl(int option, unsigned long arg2,
1004                                       unsigned long arg3,
1005                                       unsigned long arg4,
1006                                       unsigned long arg5)
1007 {
1008         return cap_task_prctl(option, arg2, arg3, arg4, arg5);
1009 }
1010
1011 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
1012 { }
1013
1014 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
1015                                           short flag)
1016 {
1017         return 0;
1018 }
1019
1020 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1021 {
1022         *secid = 0;
1023 }
1024
1025 static inline int security_msg_msg_alloc(struct msg_msg *msg)
1026 {
1027         return 0;
1028 }
1029
1030 static inline void security_msg_msg_free(struct msg_msg *msg)
1031 { }
1032
1033 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq)
1034 {
1035         return 0;
1036 }
1037
1038 static inline void security_msg_queue_free(struct kern_ipc_perm *msq)
1039 { }
1040
1041 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq,
1042                                                int msqflg)
1043 {
1044         return 0;
1045 }
1046
1047 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
1048 {
1049         return 0;
1050 }
1051
1052 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
1053                                             struct msg_msg *msg, int msqflg)
1054 {
1055         return 0;
1056 }
1057
1058 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq,
1059                                             struct msg_msg *msg,
1060                                             struct task_struct *target,
1061                                             long type, int mode)
1062 {
1063         return 0;
1064 }
1065
1066 static inline int security_shm_alloc(struct kern_ipc_perm *shp)
1067 {
1068         return 0;
1069 }
1070
1071 static inline void security_shm_free(struct kern_ipc_perm *shp)
1072 { }
1073
1074 static inline int security_shm_associate(struct kern_ipc_perm *shp,
1075                                          int shmflg)
1076 {
1077         return 0;
1078 }
1079
1080 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd)
1081 {
1082         return 0;
1083 }
1084
1085 static inline int security_shm_shmat(struct kern_ipc_perm *shp,
1086                                      char __user *shmaddr, int shmflg)
1087 {
1088         return 0;
1089 }
1090
1091 static inline int security_sem_alloc(struct kern_ipc_perm *sma)
1092 {
1093         return 0;
1094 }
1095
1096 static inline void security_sem_free(struct kern_ipc_perm *sma)
1097 { }
1098
1099 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg)
1100 {
1101         return 0;
1102 }
1103
1104 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd)
1105 {
1106         return 0;
1107 }
1108
1109 static inline int security_sem_semop(struct kern_ipc_perm *sma,
1110                                      struct sembuf *sops, unsigned nsops,
1111                                      int alter)
1112 {
1113         return 0;
1114 }
1115
1116 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1117 { }
1118
1119 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
1120 {
1121         return -EINVAL;
1122 }
1123
1124 static inline int security_setprocattr(char *name, void *value, size_t size)
1125 {
1126         return -EINVAL;
1127 }
1128
1129 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1130 {
1131         return 0;
1132 }
1133
1134 static inline int security_ismaclabel(const char *name)
1135 {
1136         return 0;
1137 }
1138
1139 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1140 {
1141         return -EOPNOTSUPP;
1142 }
1143
1144 static inline int security_secctx_to_secid(const char *secdata,
1145                                            u32 seclen,
1146                                            u32 *secid)
1147 {
1148         return -EOPNOTSUPP;
1149 }
1150
1151 static inline void security_release_secctx(char *secdata, u32 seclen)
1152 {
1153 }
1154
1155 static inline void security_inode_invalidate_secctx(struct inode *inode)
1156 {
1157 }
1158
1159 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1160 {
1161         return -EOPNOTSUPP;
1162 }
1163 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1164 {
1165         return -EOPNOTSUPP;
1166 }
1167 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1168 {
1169         return -EOPNOTSUPP;
1170 }
1171 #endif  /* CONFIG_SECURITY */
1172
1173 #ifdef CONFIG_SECURITY_NETWORK
1174
1175 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
1176 int security_unix_may_send(struct socket *sock,  struct socket *other);
1177 int security_socket_create(int family, int type, int protocol, int kern);
1178 int security_socket_post_create(struct socket *sock, int family,
1179                                 int type, int protocol, int kern);
1180 int security_socket_socketpair(struct socket *socka, struct socket *sockb);
1181 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
1182 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
1183 int security_socket_listen(struct socket *sock, int backlog);
1184 int security_socket_accept(struct socket *sock, struct socket *newsock);
1185 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
1186 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1187                             int size, int flags);
1188 int security_socket_getsockname(struct socket *sock);
1189 int security_socket_getpeername(struct socket *sock);
1190 int security_socket_getsockopt(struct socket *sock, int level, int optname);
1191 int security_socket_setsockopt(struct socket *sock, int level, int optname);
1192 int security_socket_shutdown(struct socket *sock, int how);
1193 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
1194 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1195                                       int __user *optlen, unsigned len);
1196 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
1197 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
1198 void security_sk_free(struct sock *sk);
1199 void security_sk_clone(const struct sock *sk, struct sock *newsk);
1200 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
1201 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
1202 void security_sock_graft(struct sock*sk, struct socket *parent);
1203 int security_inet_conn_request(struct sock *sk,
1204                         struct sk_buff *skb, struct request_sock *req);
1205 void security_inet_csk_clone(struct sock *newsk,
1206                         const struct request_sock *req);
1207 void security_inet_conn_established(struct sock *sk,
1208                         struct sk_buff *skb);
1209 int security_secmark_relabel_packet(u32 secid);
1210 void security_secmark_refcount_inc(void);
1211 void security_secmark_refcount_dec(void);
1212 int security_tun_dev_alloc_security(void **security);
1213 void security_tun_dev_free_security(void *security);
1214 int security_tun_dev_create(void);
1215 int security_tun_dev_attach_queue(void *security);
1216 int security_tun_dev_attach(struct sock *sk, void *security);
1217 int security_tun_dev_open(void *security);
1218 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb);
1219 int security_sctp_bind_connect(struct sock *sk, int optname,
1220                                struct sockaddr *address, int addrlen);
1221 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk,
1222                             struct sock *newsk);
1223
1224 #else   /* CONFIG_SECURITY_NETWORK */
1225 static inline int security_unix_stream_connect(struct sock *sock,
1226                                                struct sock *other,
1227                                                struct sock *newsk)
1228 {
1229         return 0;
1230 }
1231
1232 static inline int security_unix_may_send(struct socket *sock,
1233                                          struct socket *other)
1234 {
1235         return 0;
1236 }
1237
1238 static inline int security_socket_create(int family, int type,
1239                                          int protocol, int kern)
1240 {
1241         return 0;
1242 }
1243
1244 static inline int security_socket_post_create(struct socket *sock,
1245                                               int family,
1246                                               int type,
1247                                               int protocol, int kern)
1248 {
1249         return 0;
1250 }
1251
1252 static inline int security_socket_socketpair(struct socket *socka,
1253                                              struct socket *sockb)
1254 {
1255         return 0;
1256 }
1257
1258 static inline int security_socket_bind(struct socket *sock,
1259                                        struct sockaddr *address,
1260                                        int addrlen)
1261 {
1262         return 0;
1263 }
1264
1265 static inline int security_socket_connect(struct socket *sock,
1266                                           struct sockaddr *address,
1267                                           int addrlen)
1268 {
1269         return 0;
1270 }
1271
1272 static inline int security_socket_listen(struct socket *sock, int backlog)
1273 {
1274         return 0;
1275 }
1276
1277 static inline int security_socket_accept(struct socket *sock,
1278                                          struct socket *newsock)
1279 {
1280         return 0;
1281 }
1282
1283 static inline int security_socket_sendmsg(struct socket *sock,
1284                                           struct msghdr *msg, int size)
1285 {
1286         return 0;
1287 }
1288
1289 static inline int security_socket_recvmsg(struct socket *sock,
1290                                           struct msghdr *msg, int size,
1291                                           int flags)
1292 {
1293         return 0;
1294 }
1295
1296 static inline int security_socket_getsockname(struct socket *sock)
1297 {
1298         return 0;
1299 }
1300
1301 static inline int security_socket_getpeername(struct socket *sock)
1302 {
1303         return 0;
1304 }
1305
1306 static inline int security_socket_getsockopt(struct socket *sock,
1307                                              int level, int optname)
1308 {
1309         return 0;
1310 }
1311
1312 static inline int security_socket_setsockopt(struct socket *sock,
1313                                              int level, int optname)
1314 {
1315         return 0;
1316 }
1317
1318 static inline int security_socket_shutdown(struct socket *sock, int how)
1319 {
1320         return 0;
1321 }
1322 static inline int security_sock_rcv_skb(struct sock *sk,
1323                                         struct sk_buff *skb)
1324 {
1325         return 0;
1326 }
1327
1328 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1329                                                     int __user *optlen, unsigned len)
1330 {
1331         return -ENOPROTOOPT;
1332 }
1333
1334 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1335 {
1336         return -ENOPROTOOPT;
1337 }
1338
1339 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1340 {
1341         return 0;
1342 }
1343
1344 static inline void security_sk_free(struct sock *sk)
1345 {
1346 }
1347
1348 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
1349 {
1350 }
1351
1352 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1353 {
1354 }
1355
1356 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1357 {
1358 }
1359
1360 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
1361 {
1362 }
1363
1364 static inline int security_inet_conn_request(struct sock *sk,
1365                         struct sk_buff *skb, struct request_sock *req)
1366 {
1367         return 0;
1368 }
1369
1370 static inline void security_inet_csk_clone(struct sock *newsk,
1371                         const struct request_sock *req)
1372 {
1373 }
1374
1375 static inline void security_inet_conn_established(struct sock *sk,
1376                         struct sk_buff *skb)
1377 {
1378 }
1379
1380 static inline int security_secmark_relabel_packet(u32 secid)
1381 {
1382         return 0;
1383 }
1384
1385 static inline void security_secmark_refcount_inc(void)
1386 {
1387 }
1388
1389 static inline void security_secmark_refcount_dec(void)
1390 {
1391 }
1392
1393 static inline int security_tun_dev_alloc_security(void **security)
1394 {
1395         return 0;
1396 }
1397
1398 static inline void security_tun_dev_free_security(void *security)
1399 {
1400 }
1401
1402 static inline int security_tun_dev_create(void)
1403 {
1404         return 0;
1405 }
1406
1407 static inline int security_tun_dev_attach_queue(void *security)
1408 {
1409         return 0;
1410 }
1411
1412 static inline int security_tun_dev_attach(struct sock *sk, void *security)
1413 {
1414         return 0;
1415 }
1416
1417 static inline int security_tun_dev_open(void *security)
1418 {
1419         return 0;
1420 }
1421
1422 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep,
1423                                               struct sk_buff *skb)
1424 {
1425         return 0;
1426 }
1427
1428 static inline int security_sctp_bind_connect(struct sock *sk, int optname,
1429                                              struct sockaddr *address,
1430                                              int addrlen)
1431 {
1432         return 0;
1433 }
1434
1435 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep,
1436                                           struct sock *sk,
1437                                           struct sock *newsk)
1438 {
1439 }
1440 #endif  /* CONFIG_SECURITY_NETWORK */
1441
1442 #ifdef CONFIG_SECURITY_INFINIBAND
1443 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey);
1444 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num);
1445 int security_ib_alloc_security(void **sec);
1446 void security_ib_free_security(void *sec);
1447 #else   /* CONFIG_SECURITY_INFINIBAND */
1448 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
1449 {
1450         return 0;
1451 }
1452
1453 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
1454 {
1455         return 0;
1456 }
1457
1458 static inline int security_ib_alloc_security(void **sec)
1459 {
1460         return 0;
1461 }
1462
1463 static inline void security_ib_free_security(void *sec)
1464 {
1465 }
1466 #endif  /* CONFIG_SECURITY_INFINIBAND */
1467
1468 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1469
1470 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1471                                struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
1472 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
1473 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
1474 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
1475 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
1476 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1477                                       struct xfrm_sec_ctx *polsec, u32 secid);
1478 int security_xfrm_state_delete(struct xfrm_state *x);
1479 void security_xfrm_state_free(struct xfrm_state *x);
1480 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1481 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1482                                        struct xfrm_policy *xp,
1483                                        const struct flowi *fl);
1484 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
1485 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
1486
1487 #else   /* CONFIG_SECURITY_NETWORK_XFRM */
1488
1489 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1490                                              struct xfrm_user_sec_ctx *sec_ctx,
1491                                              gfp_t gfp)
1492 {
1493         return 0;
1494 }
1495
1496 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
1497 {
1498         return 0;
1499 }
1500
1501 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1502 {
1503 }
1504
1505 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1506 {
1507         return 0;
1508 }
1509
1510 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
1511                                         struct xfrm_user_sec_ctx *sec_ctx)
1512 {
1513         return 0;
1514 }
1515
1516 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1517                                         struct xfrm_sec_ctx *polsec, u32 secid)
1518 {
1519         return 0;
1520 }
1521
1522 static inline void security_xfrm_state_free(struct xfrm_state *x)
1523 {
1524 }
1525
1526 static inline int security_xfrm_state_delete(struct xfrm_state *x)
1527 {
1528         return 0;
1529 }
1530
1531 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1532 {
1533         return 0;
1534 }
1535
1536 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1537                         struct xfrm_policy *xp, const struct flowi *fl)
1538 {
1539         return 1;
1540 }
1541
1542 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1543 {
1544         return 0;
1545 }
1546
1547 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1548 {
1549 }
1550
1551 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1552
1553 #ifdef CONFIG_SECURITY_PATH
1554 int security_path_unlink(const struct path *dir, struct dentry *dentry);
1555 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode);
1556 int security_path_rmdir(const struct path *dir, struct dentry *dentry);
1557 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
1558                         unsigned int dev);
1559 int security_path_truncate(const struct path *path);
1560 int security_path_symlink(const struct path *dir, struct dentry *dentry,
1561                           const char *old_name);
1562 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
1563                        struct dentry *new_dentry);
1564 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
1565                          const struct path *new_dir, struct dentry *new_dentry,
1566                          unsigned int flags);
1567 int security_path_chmod(const struct path *path, umode_t mode);
1568 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid);
1569 int security_path_chroot(const struct path *path);
1570 #else   /* CONFIG_SECURITY_PATH */
1571 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry)
1572 {
1573         return 0;
1574 }
1575
1576 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry,
1577                                       umode_t mode)
1578 {
1579         return 0;
1580 }
1581
1582 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry)
1583 {
1584         return 0;
1585 }
1586
1587 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry,
1588                                       umode_t mode, unsigned int dev)
1589 {
1590         return 0;
1591 }
1592
1593 static inline int security_path_truncate(const struct path *path)
1594 {
1595         return 0;
1596 }
1597
1598 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry,
1599                                         const char *old_name)
1600 {
1601         return 0;
1602 }
1603
1604 static inline int security_path_link(struct dentry *old_dentry,
1605                                      const struct path *new_dir,
1606                                      struct dentry *new_dentry)
1607 {
1608         return 0;
1609 }
1610
1611 static inline int security_path_rename(const struct path *old_dir,
1612                                        struct dentry *old_dentry,
1613                                        const struct path *new_dir,
1614                                        struct dentry *new_dentry,
1615                                        unsigned int flags)
1616 {
1617         return 0;
1618 }
1619
1620 static inline int security_path_chmod(const struct path *path, umode_t mode)
1621 {
1622         return 0;
1623 }
1624
1625 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
1626 {
1627         return 0;
1628 }
1629
1630 static inline int security_path_chroot(const struct path *path)
1631 {
1632         return 0;
1633 }
1634 #endif  /* CONFIG_SECURITY_PATH */
1635
1636 #ifdef CONFIG_KEYS
1637 #ifdef CONFIG_SECURITY
1638
1639 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
1640 void security_key_free(struct key *key);
1641 int security_key_permission(key_ref_t key_ref,
1642                             const struct cred *cred, unsigned perm);
1643 int security_key_getsecurity(struct key *key, char **_buffer);
1644
1645 #else
1646
1647 static inline int security_key_alloc(struct key *key,
1648                                      const struct cred *cred,
1649                                      unsigned long flags)
1650 {
1651         return 0;
1652 }
1653
1654 static inline void security_key_free(struct key *key)
1655 {
1656 }
1657
1658 static inline int security_key_permission(key_ref_t key_ref,
1659                                           const struct cred *cred,
1660                                           unsigned perm)
1661 {
1662         return 0;
1663 }
1664
1665 static inline int security_key_getsecurity(struct key *key, char **_buffer)
1666 {
1667         *_buffer = NULL;
1668         return 0;
1669 }
1670
1671 #endif
1672 #endif /* CONFIG_KEYS */
1673
1674 #ifdef CONFIG_AUDIT
1675 #ifdef CONFIG_SECURITY
1676 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
1677 int security_audit_rule_known(struct audit_krule *krule);
1678 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1679                               struct audit_context *actx);
1680 void security_audit_rule_free(void *lsmrule);
1681
1682 #else
1683
1684 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
1685                                            void **lsmrule)
1686 {
1687         return 0;
1688 }
1689
1690 static inline int security_audit_rule_known(struct audit_krule *krule)
1691 {
1692         return 0;
1693 }
1694
1695 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
1696                                    void *lsmrule, struct audit_context *actx)
1697 {
1698         return 0;
1699 }
1700
1701 static inline void security_audit_rule_free(void *lsmrule)
1702 { }
1703
1704 #endif /* CONFIG_SECURITY */
1705 #endif /* CONFIG_AUDIT */
1706
1707 #ifdef CONFIG_SECURITYFS
1708
1709 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
1710                                              struct dentry *parent, void *data,
1711                                              const struct file_operations *fops);
1712 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
1713 struct dentry *securityfs_create_symlink(const char *name,
1714                                          struct dentry *parent,
1715                                          const char *target,
1716                                          const struct inode_operations *iops);
1717 extern void securityfs_remove(struct dentry *dentry);
1718
1719 #else /* CONFIG_SECURITYFS */
1720
1721 static inline struct dentry *securityfs_create_dir(const char *name,
1722                                                    struct dentry *parent)
1723 {
1724         return ERR_PTR(-ENODEV);
1725 }
1726
1727 static inline struct dentry *securityfs_create_file(const char *name,
1728                                                     umode_t mode,
1729                                                     struct dentry *parent,
1730                                                     void *data,
1731                                                     const struct file_operations *fops)
1732 {
1733         return ERR_PTR(-ENODEV);
1734 }
1735
1736 static inline struct dentry *securityfs_create_symlink(const char *name,
1737                                         struct dentry *parent,
1738                                         const char *target,
1739                                         const struct inode_operations *iops)
1740 {
1741         return ERR_PTR(-ENODEV);
1742 }
1743
1744 static inline void securityfs_remove(struct dentry *dentry)
1745 {}
1746
1747 #endif
1748
1749 #ifdef CONFIG_BPF_SYSCALL
1750 union bpf_attr;
1751 struct bpf_map;
1752 struct bpf_prog;
1753 struct bpf_prog_aux;
1754 #ifdef CONFIG_SECURITY
1755 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size);
1756 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode);
1757 extern int security_bpf_prog(struct bpf_prog *prog);
1758 extern int security_bpf_map_alloc(struct bpf_map *map);
1759 extern void security_bpf_map_free(struct bpf_map *map);
1760 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux);
1761 extern void security_bpf_prog_free(struct bpf_prog_aux *aux);
1762 #else
1763 static inline int security_bpf(int cmd, union bpf_attr *attr,
1764                                              unsigned int size)
1765 {
1766         return 0;
1767 }
1768
1769 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode)
1770 {
1771         return 0;
1772 }
1773
1774 static inline int security_bpf_prog(struct bpf_prog *prog)
1775 {
1776         return 0;
1777 }
1778
1779 static inline int security_bpf_map_alloc(struct bpf_map *map)
1780 {
1781         return 0;
1782 }
1783
1784 static inline void security_bpf_map_free(struct bpf_map *map)
1785 { }
1786
1787 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
1788 {
1789         return 0;
1790 }
1791
1792 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux)
1793 { }
1794 #endif /* CONFIG_SECURITY */
1795 #endif /* CONFIG_BPF_SYSCALL */
1796
1797 #ifdef CONFIG_SECURITY
1798
1799 static inline char *alloc_secdata(void)
1800 {
1801         return (char *)get_zeroed_page(GFP_KERNEL);
1802 }
1803
1804 static inline void free_secdata(void *secdata)
1805 {
1806         free_page((unsigned long)secdata);
1807 }
1808
1809 #else
1810
1811 static inline char *alloc_secdata(void)
1812 {
1813         return (char *)1;
1814 }
1815
1816 static inline void free_secdata(void *secdata)
1817 { }
1818 #endif /* CONFIG_SECURITY */
1819
1820 #endif /* ! __LINUX_SECURITY_H */
1821