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 /* Default (no) options for the capable function */
  61 #define CAP_OPT_NONE 0x0
  62 /* If capable should audit the security request */
  63 #define CAP_OPT_NOAUDIT BIT(1)
  64 /* If capable is being called by a setid function */
  65 #define CAP_OPT_INSETID BIT(2)
  66
  67 /* LSM Agnostic defines for sb_set_mnt_opts */
  68 #define SECURITY_LSM_NATIVE_LABELS      1
  69
  70 struct ctl_table;
  71 struct audit_krule;
  72 struct user_namespace;
  73 struct timezone;
  74
  75 enum lsm_event {
  76         LSM_POLICY_CHANGE,
  77 };
  78
  79 /* These functions are in security/commoncap.c */
  80 extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
  81                        int cap, unsigned int opts);
  82 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz);
  83 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
  84 extern int cap_ptrace_traceme(struct task_struct *parent);
  85 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
  86 extern int cap_capset(struct cred *new, const struct cred *old,
  87                       const kernel_cap_t *effective,
  88                       const kernel_cap_t *inheritable,
  89                       const kernel_cap_t *permitted);
  90 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
  91 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
  92                               const void *value, size_t size, int flags);
  93 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
  94 extern int cap_inode_need_killpriv(struct dentry *dentry);
  95 extern int cap_inode_killpriv(struct dentry *dentry);
  96 extern int cap_inode_getsecurity(struct inode *inode, const char *name,
  97                                  void **buffer, bool alloc);
  98 extern int cap_mmap_addr(unsigned long addr);
  99 extern int cap_mmap_file(struct file *file, unsigned long reqprot,
 100                          unsigned long prot, unsigned long flags);
 101 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
 102 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 103                           unsigned long arg4, unsigned long arg5);
 104 extern int cap_task_setscheduler(struct task_struct *p);
 105 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
 106 extern int cap_task_setnice(struct task_struct *p, int nice);
 107 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
 108
 109 struct msghdr;
 110 struct sk_buff;
 111 struct sock;
 112 struct sockaddr;
 113 struct socket;
 114 struct flowi;
 115 struct dst_entry;
 116 struct xfrm_selector;
 117 struct xfrm_policy;
 118 struct xfrm_state;
 119 struct xfrm_user_sec_ctx;
 120 struct seq_file;
 121
 122 #ifdef CONFIG_MMU
 123 extern unsigned long mmap_min_addr;
 124 extern unsigned long dac_mmap_min_addr;
 125 #else
 126 #define mmap_min_addr           0UL
 127 #define dac_mmap_min_addr       0UL
 128 #endif
 129
 130 /*
 131  * Values used in the task_security_ops calls
 132  */
 133 /* setuid or setgid, id0 == uid or gid */
 134 #define LSM_SETID_ID    1
 135
 136 /* setreuid or setregid, id0 == real, id1 == eff */
 137 #define LSM_SETID_RE    2
 138
 139 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
 140 #define LSM_SETID_RES   4
 141
 142 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
 143 #define LSM_SETID_FS    8
 144
 145 /* Flags for security_task_prlimit(). */
 146 #define LSM_PRLIMIT_READ  1
 147 #define LSM_PRLIMIT_WRITE 2
 148
 149 /* forward declares to avoid warnings */
 150 struct sched_param;
 151 struct request_sock;
 152
 153 /* bprm->unsafe reasons */
 154 #define LSM_UNSAFE_SHARE        1
 155 #define LSM_UNSAFE_PTRACE       2
 156 #define LSM_UNSAFE_NO_NEW_PRIVS 4
 157
 158 #ifdef CONFIG_MMU
 159 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
 160                                  void __user *buffer, size_t *lenp, loff_t *ppos);
 161 #endif
 162
 163 /* security_inode_init_security callback function to write xattrs */
 164 typedef int (*initxattrs) (struct inode *inode,
 165                            const struct xattr *xattr_array, void *fs_data);
 166
 167 #ifdef CONFIG_SECURITY
 168
 169 struct security_mnt_opts {
 170         char **mnt_opts;
 171         int *mnt_opts_flags;
 172         int num_mnt_opts;
 173 };
 174
 175 int call_lsm_notifier(enum lsm_event event, void *data);
 176 int register_lsm_notifier(struct notifier_block *nb);
 177 int unregister_lsm_notifier(struct notifier_block *nb);
 178
 179 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
 180 {
 181         opts->mnt_opts = NULL;
 182         opts->mnt_opts_flags = NULL;
 183         opts->num_mnt_opts = 0;
 184 }
 185
 186 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
 187 {
 188         int i;
 189         if (opts->mnt_opts)
 190                 for (i = 0; i < opts->num_mnt_opts; i++)
 191                         kfree(opts->mnt_opts[i]);
 192         kfree(opts->mnt_opts);
 193         opts->mnt_opts = NULL;
 194         kfree(opts->mnt_opts_flags);
 195         opts->mnt_opts_flags = NULL;
 196         opts->num_mnt_opts = 0;
 197 }
 198
 199 /* prototypes */
 200 extern int security_init(void);
 201
 202 /* Security operations */
 203 int security_binder_set_context_mgr(struct task_struct *mgr);
 204 int security_binder_transaction(struct task_struct *from,
 205                                 struct task_struct *to);
 206 int security_binder_transfer_binder(struct task_struct *from,
 207                                     struct task_struct *to);
 208 int security_binder_transfer_file(struct task_struct *from,
 209                                   struct task_struct *to, struct file *file);
 210 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
 211 int security_ptrace_traceme(struct task_struct *parent);
 212 int security_capget(struct task_struct *target,
 213                     kernel_cap_t *effective,
 214                     kernel_cap_t *inheritable,
 215                     kernel_cap_t *permitted);
 216 int security_capset(struct cred *new, const struct cred *old,
 217                     const kernel_cap_t *effective,
 218                     const kernel_cap_t *inheritable,
 219                     const kernel_cap_t *permitted);
 220 int security_capable(const struct cred *cred,
 221                        struct user_namespace *ns,
 222                        int cap,
 223                        unsigned int opts);
 224 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
 225 int security_quota_on(struct dentry *dentry);
 226 int security_syslog(int type);
 227 int security_settime64(const struct timespec64 *ts, const struct timezone *tz);
 228 static inline int security_settime(const struct timespec *ts, const struct timezone *tz)
 229 {
 230         struct timespec64 ts64 = timespec_to_timespec64(*ts);
 231
 232         return security_settime64(&ts64, tz);
 233 }
 234 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
 235 int security_bprm_set_creds(struct linux_binprm *bprm);
 236 int security_bprm_check(struct linux_binprm *bprm);
 237 void security_bprm_committing_creds(struct linux_binprm *bprm);
 238 void security_bprm_committed_creds(struct linux_binprm *bprm);
 239 int security_sb_alloc(struct super_block *sb);
 240 void security_sb_free(struct super_block *sb);
 241 int security_sb_copy_data(char *orig, char *copy);
 242 int security_sb_remount(struct super_block *sb, void *data);
 243 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
 244 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
 245 int security_sb_statfs(struct dentry *dentry);
 246 int security_sb_mount(const char *dev_name, const struct path *path,
 247                       const char *type, unsigned long flags, void *data);
 248 int security_sb_umount(struct vfsmount *mnt, int flags);
 249 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path);
 250 int security_sb_set_mnt_opts(struct super_block *sb,
 251                                 struct security_mnt_opts *opts,
 252                                 unsigned long kern_flags,
 253                                 unsigned long *set_kern_flags);
 254 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 255                                 struct super_block *newsb,
 256                                 unsigned long kern_flags,
 257                                 unsigned long *set_kern_flags);
 258 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
 259 int security_dentry_init_security(struct dentry *dentry, int mode,
 260                                         const struct qstr *name, void **ctx,
 261                                         u32 *ctxlen);
 262 int security_dentry_create_files_as(struct dentry *dentry, int mode,
 263                                         struct qstr *name,
 264                                         const struct cred *old,
 265                                         struct cred *new);
 266
 267 int security_inode_alloc(struct inode *inode);
 268 void security_inode_free(struct inode *inode);
 269 int security_inode_init_security(struct inode *inode, struct inode *dir,
 270                                  const struct qstr *qstr,
 271                                  initxattrs initxattrs, void *fs_data);
 272 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
 273                                      const struct qstr *qstr, const char **name,
 274                                      void **value, size_t *len);
 275 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
 276 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 277                          struct dentry *new_dentry);
 278 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
 279 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 280                            const char *old_name);
 281 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
 282 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
 283 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
 284 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 285                           struct inode *new_dir, struct dentry *new_dentry,
 286                           unsigned int flags);
 287 int security_inode_readlink(struct dentry *dentry);
 288 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
 289                                bool rcu);
 290 int security_inode_permission(struct inode *inode, int mask);
 291 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
 292 int security_inode_getattr(const struct path *path);
 293 int security_inode_setxattr(struct dentry *dentry, const char *name,
 294                             const void *value, size_t size, int flags);
 295 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 296                                   const void *value, size_t size, int flags);
 297 int security_inode_getxattr(struct dentry *dentry, const char *name);
 298 int security_inode_listxattr(struct dentry *dentry);
 299 int security_inode_removexattr(struct dentry *dentry, const char *name);
 300 int security_inode_need_killpriv(struct dentry *dentry);
 301 int security_inode_killpriv(struct dentry *dentry);
 302 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc);
 303 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
 304 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
 305 void security_inode_getsecid(struct inode *inode, u32 *secid);
 306 int security_inode_copy_up(struct dentry *src, struct cred **new);
 307 int security_inode_copy_up_xattr(const char *name);
 308 int security_file_permission(struct file *file, int mask);
 309 int security_file_alloc(struct file *file);
 310 void security_file_free(struct file *file);
 311 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
 312 int security_mmap_file(struct file *file, unsigned long prot,
 313                         unsigned long flags);
 314 int security_mmap_addr(unsigned long addr);
 315 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 316                            unsigned long prot);
 317 int security_file_lock(struct file *file, unsigned int cmd);
 318 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
 319 void security_file_set_fowner(struct file *file);
 320 int security_file_send_sigiotask(struct task_struct *tsk,
 321                                  struct fown_struct *fown, int sig);
 322 int security_file_receive(struct file *file);
 323 int security_file_open(struct file *file, const struct cred *cred);
 324 int security_task_alloc(struct task_struct *task, unsigned long clone_flags);
 325 void security_task_free(struct task_struct *task);
 326 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
 327 void security_cred_free(struct cred *cred);
 328 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
 329 void security_transfer_creds(struct cred *new, const struct cred *old);
 330 int security_kernel_act_as(struct cred *new, u32 secid);
 331 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
 332 int security_kernel_module_request(char *kmod_name);
 333 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id);
 334 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
 335                                    enum kernel_read_file_id id);
 336 int security_task_fix_setuid(struct cred *new, const struct cred *old,
 337                              int flags);
 338 int security_task_setpgid(struct task_struct *p, pid_t pgid);
 339 int security_task_getpgid(struct task_struct *p);
 340 int security_task_getsid(struct task_struct *p);
 341 void security_task_getsecid(struct task_struct *p, u32 *secid);
 342 int security_task_setnice(struct task_struct *p, int nice);
 343 int security_task_setioprio(struct task_struct *p, int ioprio);
 344 int security_task_getioprio(struct task_struct *p);
 345 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
 346                           unsigned int flags);
 347 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
 348                 struct rlimit *new_rlim);
 349 int security_task_setscheduler(struct task_struct *p);
 350 int security_task_getscheduler(struct task_struct *p);
 351 int security_task_movememory(struct task_struct *p);
 352 int security_task_kill(struct task_struct *p, struct siginfo *info,
 353                         int sig, u32 secid);
 354 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 355                         unsigned long arg4, unsigned long arg5);
 356 void security_task_to_inode(struct task_struct *p, struct inode *inode);
 357 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
 358 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
 359 int security_msg_msg_alloc(struct msg_msg *msg);
 360 void security_msg_msg_free(struct msg_msg *msg);
 361 int security_msg_queue_alloc(struct msg_queue *msq);
 362 void security_msg_queue_free(struct msg_queue *msq);
 363 int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
 364 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
 365 int security_msg_queue_msgsnd(struct msg_queue *msq,
 366                               struct msg_msg *msg, int msqflg);
 367 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
 368                               struct task_struct *target, long type, int mode);
 369 int security_shm_alloc(struct shmid_kernel *shp);
 370 void security_shm_free(struct shmid_kernel *shp);
 371 int security_shm_associate(struct shmid_kernel *shp, int shmflg);
 372 int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
 373 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
 374 int security_sem_alloc(struct sem_array *sma);
 375 void security_sem_free(struct sem_array *sma);
 376 int security_sem_associate(struct sem_array *sma, int semflg);
 377 int security_sem_semctl(struct sem_array *sma, int cmd);
 378 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
 379                         unsigned nsops, int alter);
 380 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
 381 int security_getprocattr(struct task_struct *p, const char *lsm, char *name,
 382                          char **value);
 383 int security_setprocattr(const char *lsm, const char *name, void *value,
 384                          size_t size);
 385 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
 386 int security_ismaclabel(const char *name);
 387 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
 388 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
 389 void security_release_secctx(char *secdata, u32 seclen);
 390
 391 void security_inode_invalidate_secctx(struct inode *inode);
 392 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
 393 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
 394 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
 395 #else /* CONFIG_SECURITY */
 396 struct security_mnt_opts {
 397 };
 398
 399 static inline int call_lsm_notifier(enum lsm_event event, void *data)
 400 {
 401         return 0;
 402 }
 403
 404 static inline int register_lsm_notifier(struct notifier_block *nb)
 405 {
 406         return 0;
 407 }
 408
 409 static inline  int unregister_lsm_notifier(struct notifier_block *nb)
 410 {
 411         return 0;
 412 }
 413
 414 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
 415 {
 416 }
 417
 418 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
 419 {
 420 }
 421
 422 /*
 423  * This is the default capabilities functionality.  Most of these functions
 424  * are just stubbed out, but a few must call the proper capable code.
 425  */
 426
 427 static inline int security_init(void)
 428 {
 429         return 0;
 430 }
 431
 432 static inline int security_binder_set_context_mgr(struct task_struct *mgr)
 433 {
 434         return 0;
 435 }
 436
 437 static inline int security_binder_transaction(struct task_struct *from,
 438                                               struct task_struct *to)
 439 {
 440         return 0;
 441 }
 442
 443 static inline int security_binder_transfer_binder(struct task_struct *from,
 444                                                   struct task_struct *to)
 445 {
 446         return 0;
 447 }
 448
 449 static inline int security_binder_transfer_file(struct task_struct *from,
 450                                                 struct task_struct *to,
 451                                                 struct file *file)
 452 {
 453         return 0;
 454 }
 455
 456 static inline int security_ptrace_access_check(struct task_struct *child,
 457                                              unsigned int mode)
 458 {
 459         return cap_ptrace_access_check(child, mode);
 460 }
 461
 462 static inline int security_ptrace_traceme(struct task_struct *parent)
 463 {
 464         return cap_ptrace_traceme(parent);
 465 }
 466
 467 static inline int security_capget(struct task_struct *target,
 468                                    kernel_cap_t *effective,
 469                                    kernel_cap_t *inheritable,
 470                                    kernel_cap_t *permitted)
 471 {
 472         return cap_capget(target, effective, inheritable, permitted);
 473 }
 474
 475 static inline int security_capset(struct cred *new,
 476                                    const struct cred *old,
 477                                    const kernel_cap_t *effective,
 478                                    const kernel_cap_t *inheritable,
 479                                    const kernel_cap_t *permitted)
 480 {
 481         return cap_capset(new, old, effective, inheritable, permitted);
 482 }
 483
 484 static inline int security_capable(const struct cred *cred,
 485                                    struct user_namespace *ns,
 486                                    int cap,
 487                                    unsigned int opts)
 488 {
 489         return cap_capable(cred, ns, cap, opts);
 490 }
 491
 492 static inline int security_quotactl(int cmds, int type, int id,
 493                                      struct super_block *sb)
 494 {
 495         return 0;
 496 }
 497
 498 static inline int security_quota_on(struct dentry *dentry)
 499 {
 500         return 0;
 501 }
 502
 503 static inline int security_syslog(int type)
 504 {
 505         return 0;
 506 }
 507
 508 static inline int security_settime64(const struct timespec64 *ts,
 509                                      const struct timezone *tz)
 510 {
 511         return cap_settime(ts, tz);
 512 }
 513
 514 static inline int security_settime(const struct timespec *ts,
 515                                    const struct timezone *tz)
 516 {
 517         struct timespec64 ts64 = timespec_to_timespec64(*ts);
 518
 519         return cap_settime(&ts64, tz);
 520 }
 521
 522 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 523 {
 524         return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages));
 525 }
 526
 527 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
 528 {
 529         return cap_bprm_set_creds(bprm);
 530 }
 531
 532 static inline int security_bprm_check(struct linux_binprm *bprm)
 533 {
 534         return 0;
 535 }
 536
 537 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
 538 {
 539 }
 540
 541 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
 542 {
 543 }
 544
 545 static inline int security_sb_alloc(struct super_block *sb)
 546 {
 547         return 0;
 548 }
 549
 550 static inline void security_sb_free(struct super_block *sb)
 551 { }
 552
 553 static inline int security_sb_copy_data(char *orig, char *copy)
 554 {
 555         return 0;
 556 }
 557
 558 static inline int security_sb_remount(struct super_block *sb, void *data)
 559 {
 560         return 0;
 561 }
 562
 563 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
 564 {
 565         return 0;
 566 }
 567
 568 static inline int security_sb_show_options(struct seq_file *m,
 569                                            struct super_block *sb)
 570 {
 571         return 0;
 572 }
 573
 574 static inline int security_sb_statfs(struct dentry *dentry)
 575 {
 576         return 0;
 577 }
 578
 579 static inline int security_sb_mount(const char *dev_name, const struct path *path,
 580                                     const char *type, unsigned long flags,
 581                                     void *data)
 582 {
 583         return 0;
 584 }
 585
 586 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
 587 {
 588         return 0;
 589 }
 590
 591 static inline int security_sb_pivotroot(const struct path *old_path,
 592                                         const struct path *new_path)
 593 {
 594         return 0;
 595 }
 596
 597 static inline int security_sb_set_mnt_opts(struct super_block *sb,
 598                                            struct security_mnt_opts *opts,
 599                                            unsigned long kern_flags,
 600                                            unsigned long *set_kern_flags)
 601 {
 602         return 0;
 603 }
 604
 605 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 606                                               struct super_block *newsb,
 607                                               unsigned long kern_flags,
 608                                               unsigned long *set_kern_flags)
 609 {
 610         return 0;
 611 }
 612
 613 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
 614 {
 615         return 0;
 616 }
 617
 618 static inline int security_inode_alloc(struct inode *inode)
 619 {
 620         return 0;
 621 }
 622
 623 static inline void security_inode_free(struct inode *inode)
 624 { }
 625
 626 static inline int security_dentry_init_security(struct dentry *dentry,
 627                                                  int mode,
 628                                                  const struct qstr *name,
 629                                                  void **ctx,
 630                                                  u32 *ctxlen)
 631 {
 632         return -EOPNOTSUPP;
 633 }
 634
 635 static inline int security_dentry_create_files_as(struct dentry *dentry,
 636                                                   int mode, struct qstr *name,
 637                                                   const struct cred *old,
 638                                                   struct cred *new)
 639 {
 640         return 0;
 641 }
 642
 643
 644 static inline int security_inode_init_security(struct inode *inode,
 645                                                 struct inode *dir,
 646                                                 const struct qstr *qstr,
 647                                                 const initxattrs xattrs,
 648                                                 void *fs_data)
 649 {
 650         return 0;
 651 }
 652
 653 static inline int security_old_inode_init_security(struct inode *inode,
 654                                                    struct inode *dir,
 655                                                    const struct qstr *qstr,
 656                                                    const char **name,
 657                                                    void **value, size_t *len)
 658 {
 659         return -EOPNOTSUPP;
 660 }
 661
 662 static inline int security_inode_create(struct inode *dir,
 663                                          struct dentry *dentry,
 664                                          umode_t mode)
 665 {
 666         return 0;
 667 }
 668
 669 static inline int security_inode_link(struct dentry *old_dentry,
 670                                        struct inode *dir,
 671                                        struct dentry *new_dentry)
 672 {
 673         return 0;
 674 }
 675
 676 static inline int security_inode_unlink(struct inode *dir,
 677                                          struct dentry *dentry)
 678 {
 679         return 0;
 680 }
 681
 682 static inline int security_inode_symlink(struct inode *dir,
 683                                           struct dentry *dentry,
 684                                           const char *old_name)
 685 {
 686         return 0;
 687 }
 688
 689 static inline int security_inode_mkdir(struct inode *dir,
 690                                         struct dentry *dentry,
 691                                         int mode)
 692 {
 693         return 0;
 694 }
 695
 696 static inline int security_inode_rmdir(struct inode *dir,
 697                                         struct dentry *dentry)
 698 {
 699         return 0;
 700 }
 701
 702 static inline int security_inode_mknod(struct inode *dir,
 703                                         struct dentry *dentry,
 704                                         int mode, dev_t dev)
 705 {
 706         return 0;
 707 }
 708
 709 static inline int security_inode_rename(struct inode *old_dir,
 710                                          struct dentry *old_dentry,
 711                                          struct inode *new_dir,
 712                                          struct dentry *new_dentry,
 713                                          unsigned int flags)
 714 {
 715         return 0;
 716 }
 717
 718 static inline int security_inode_readlink(struct dentry *dentry)
 719 {
 720         return 0;
 721 }
 722
 723 static inline int security_inode_follow_link(struct dentry *dentry,
 724                                              struct inode *inode,
 725                                              bool rcu)
 726 {
 727         return 0;
 728 }
 729
 730 static inline int security_inode_permission(struct inode *inode, int mask)
 731 {
 732         return 0;
 733 }
 734
 735 static inline int security_inode_setattr(struct dentry *dentry,
 736                                           struct iattr *attr)
 737 {
 738         return 0;
 739 }
 740
 741 static inline int security_inode_getattr(const struct path *path)
 742 {
 743         return 0;
 744 }
 745
 746 static inline int security_inode_setxattr(struct dentry *dentry,
 747                 const char *name, const void *value, size_t size, int flags)
 748 {
 749         return cap_inode_setxattr(dentry, name, value, size, flags);
 750 }
 751
 752 static inline void security_inode_post_setxattr(struct dentry *dentry,
 753                 const char *name, const void *value, size_t size, int flags)
 754 { }
 755
 756 static inline int security_inode_getxattr(struct dentry *dentry,
 757                         const char *name)
 758 {
 759         return 0;
 760 }
 761
 762 static inline int security_inode_listxattr(struct dentry *dentry)
 763 {
 764         return 0;
 765 }
 766
 767 static inline int security_inode_removexattr(struct dentry *dentry,
 768                         const char *name)
 769 {
 770         return cap_inode_removexattr(dentry, name);
 771 }
 772
 773 static inline int security_inode_need_killpriv(struct dentry *dentry)
 774 {
 775         return cap_inode_need_killpriv(dentry);
 776 }
 777
 778 static inline int security_inode_killpriv(struct dentry *dentry)
 779 {
 780         return cap_inode_killpriv(dentry);
 781 }
 782
 783 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
 784 {
 785         return -EOPNOTSUPP;
 786 }
 787
 788 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 789 {
 790         return -EOPNOTSUPP;
 791 }
 792
 793 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 794 {
 795         return 0;
 796 }
 797
 798 static inline void security_inode_getsecid(struct inode *inode, u32 *secid)
 799 {
 800         *secid = 0;
 801 }
 802
 803 static inline int security_inode_copy_up(struct dentry *src, struct cred **new)
 804 {
 805         return 0;
 806 }
 807
 808 static inline int security_inode_copy_up_xattr(const char *name)
 809 {
 810         return -EOPNOTSUPP;
 811 }
 812
 813 static inline int security_file_permission(struct file *file, int mask)
 814 {
 815         return 0;
 816 }
 817
 818 static inline int security_file_alloc(struct file *file)
 819 {
 820         return 0;
 821 }
 822
 823 static inline void security_file_free(struct file *file)
 824 { }
 825
 826 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
 827                                       unsigned long arg)
 828 {
 829         return 0;
 830 }
 831
 832 static inline int security_mmap_file(struct file *file, unsigned long prot,
 833                                      unsigned long flags)
 834 {
 835         return 0;
 836 }
 837
 838 static inline int security_mmap_addr(unsigned long addr)
 839 {
 840         return cap_mmap_addr(addr);
 841 }
 842
 843 static inline int security_file_mprotect(struct vm_area_struct *vma,
 844                                          unsigned long reqprot,
 845                                          unsigned long prot)
 846 {
 847         return 0;
 848 }
 849
 850 static inline int security_file_lock(struct file *file, unsigned int cmd)
 851 {
 852         return 0;
 853 }
 854
 855 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
 856                                       unsigned long arg)
 857 {
 858         return 0;
 859 }
 860
 861 static inline void security_file_set_fowner(struct file *file)
 862 {
 863         return;
 864 }
 865
 866 static inline int security_file_send_sigiotask(struct task_struct *tsk,
 867                                                struct fown_struct *fown,
 868                                                int sig)
 869 {
 870         return 0;
 871 }
 872
 873 static inline int security_file_receive(struct file *file)
 874 {
 875         return 0;
 876 }
 877
 878 static inline int security_file_open(struct file *file,
 879                                      const struct cred *cred)
 880 {
 881         return 0;
 882 }
 883
 884 static inline int security_task_alloc(struct task_struct *task,
 885                                       unsigned long clone_flags)
 886 {
 887         return 0;
 888 }
 889
 890 static inline void security_task_free(struct task_struct *task)
 891 { }
 892
 893 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 894 {
 895         return 0;
 896 }
 897
 898 static inline void security_cred_free(struct cred *cred)
 899 { }
 900
 901 static inline int security_prepare_creds(struct cred *new,
 902                                          const struct cred *old,
 903                                          gfp_t gfp)
 904 {
 905         return 0;
 906 }
 907
 908 static inline void security_transfer_creds(struct cred *new,
 909                                            const struct cred *old)
 910 {
 911 }
 912
 913 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
 914 {
 915         return 0;
 916 }
 917
 918 static inline int security_kernel_create_files_as(struct cred *cred,
 919                                                   struct inode *inode)
 920 {
 921         return 0;
 922 }
 923
 924 static inline int security_kernel_module_request(char *kmod_name)
 925 {
 926         return 0;
 927 }
 928
 929 static inline int security_kernel_read_file(struct file *file,
 930                                             enum kernel_read_file_id id)
 931 {
 932         return 0;
 933 }
 934
 935 static inline int security_kernel_post_read_file(struct file *file,
 936                                                  char *buf, loff_t size,
 937                                                  enum kernel_read_file_id id)
 938 {
 939         return 0;
 940 }
 941
 942 static inline int security_task_fix_setuid(struct cred *new,
 943                                            const struct cred *old,
 944                                            int flags)
 945 {
 946         return cap_task_fix_setuid(new, old, flags);
 947 }
 948
 949 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
 950 {
 951         return 0;
 952 }
 953
 954 static inline int security_task_getpgid(struct task_struct *p)
 955 {
 956         return 0;
 957 }
 958
 959 static inline int security_task_getsid(struct task_struct *p)
 960 {
 961         return 0;
 962 }
 963
 964 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
 965 {
 966         *secid = 0;
 967 }
 968
 969 static inline int security_task_setnice(struct task_struct *p, int nice)
 970 {
 971         return cap_task_setnice(p, nice);
 972 }
 973
 974 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
 975 {
 976         return cap_task_setioprio(p, ioprio);
 977 }
 978
 979 static inline int security_task_getioprio(struct task_struct *p)
 980 {
 981         return 0;
 982 }
 983
 984 static inline int security_task_prlimit(const struct cred *cred,
 985                                         const struct cred *tcred,
 986                                         unsigned int flags)
 987 {
 988         return 0;
 989 }
 990
 991 static inline int security_task_setrlimit(struct task_struct *p,
 992                                           unsigned int resource,
 993                                           struct rlimit *new_rlim)
 994 {
 995         return 0;
 996 }
 997
 998 static inline int security_task_setscheduler(struct task_struct *p)
 999 {
1000         return cap_task_setscheduler(p);
1001 }
1002
1003 static inline int security_task_getscheduler(struct task_struct *p)
1004 {
1005         return 0;
1006 }
1007
1008 static inline int security_task_movememory(struct task_struct *p)
1009 {
1010         return 0;
1011 }
1012
1013 static inline int security_task_kill(struct task_struct *p,
1014                                      struct siginfo *info, int sig,
1015                                      u32 secid)
1016 {
1017         return 0;
1018 }
1019
1020 static inline int security_task_prctl(int option, unsigned long arg2,
1021                                       unsigned long arg3,
1022                                       unsigned long arg4,
1023                                       unsigned long arg5)
1024 {
1025         return cap_task_prctl(option, arg2, arg3, arg4, arg5);
1026 }
1027
1028 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
1029 { }
1030
1031 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
1032                                           short flag)
1033 {
1034         return 0;
1035 }
1036
1037 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1038 {
1039         *secid = 0;
1040 }
1041
1042 static inline int security_msg_msg_alloc(struct msg_msg *msg)
1043 {
1044         return 0;
1045 }
1046
1047 static inline void security_msg_msg_free(struct msg_msg *msg)
1048 { }
1049
1050 static inline int security_msg_queue_alloc(struct msg_queue *msq)
1051 {
1052         return 0;
1053 }
1054
1055 static inline void security_msg_queue_free(struct msg_queue *msq)
1056 { }
1057
1058 static inline int security_msg_queue_associate(struct msg_queue *msq,
1059                                                int msqflg)
1060 {
1061         return 0;
1062 }
1063
1064 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
1065 {
1066         return 0;
1067 }
1068
1069 static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
1070                                             struct msg_msg *msg, int msqflg)
1071 {
1072         return 0;
1073 }
1074
1075 static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
1076                                             struct msg_msg *msg,
1077                                             struct task_struct *target,
1078                                             long type, int mode)
1079 {
1080         return 0;
1081 }
1082
1083 static inline int security_shm_alloc(struct shmid_kernel *shp)
1084 {
1085         return 0;
1086 }
1087
1088 static inline void security_shm_free(struct shmid_kernel *shp)
1089 { }
1090
1091 static inline int security_shm_associate(struct shmid_kernel *shp,
1092                                          int shmflg)
1093 {
1094         return 0;
1095 }
1096
1097 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
1098 {
1099         return 0;
1100 }
1101
1102 static inline int security_shm_shmat(struct shmid_kernel *shp,
1103                                      char __user *shmaddr, int shmflg)
1104 {
1105         return 0;
1106 }
1107
1108 static inline int security_sem_alloc(struct sem_array *sma)
1109 {
1110         return 0;
1111 }
1112
1113 static inline void security_sem_free(struct sem_array *sma)
1114 { }
1115
1116 static inline int security_sem_associate(struct sem_array *sma, int semflg)
1117 {
1118         return 0;
1119 }
1120
1121 static inline int security_sem_semctl(struct sem_array *sma, int cmd)
1122 {
1123         return 0;
1124 }
1125
1126 static inline int security_sem_semop(struct sem_array *sma,
1127                                      struct sembuf *sops, unsigned nsops,
1128                                      int alter)
1129 {
1130         return 0;
1131 }
1132
1133 static inline void security_d_instantiate(struct dentry *dentry,
1134                                           struct inode *inode)
1135 { }
1136
1137 static inline int security_getprocattr(struct task_struct *p, const char *lsm,
1138                                        char *name, char **value)
1139 {
1140         return -EINVAL;
1141 }
1142
1143 static inline int security_setprocattr(const char *lsm, char *name,
1144                                        void *value, size_t size)
1145 {
1146         return -EINVAL;
1147 }
1148
1149 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1150 {
1151         return 0;
1152 }
1153
1154 static inline int security_ismaclabel(const char *name)
1155 {
1156         return 0;
1157 }
1158
1159 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1160 {
1161         return -EOPNOTSUPP;
1162 }
1163
1164 static inline int security_secctx_to_secid(const char *secdata,
1165                                            u32 seclen,
1166                                            u32 *secid)
1167 {
1168         return -EOPNOTSUPP;
1169 }
1170
1171 static inline void security_release_secctx(char *secdata, u32 seclen)
1172 {
1173 }
1174
1175 static inline void security_inode_invalidate_secctx(struct inode *inode)
1176 {
1177 }
1178
1179 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1180 {
1181         return -EOPNOTSUPP;
1182 }
1183 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1184 {
1185         return -EOPNOTSUPP;
1186 }
1187 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1188 {
1189         return -EOPNOTSUPP;
1190 }
1191 #endif  /* CONFIG_SECURITY */
1192
1193 #ifdef CONFIG_SECURITY_NETWORK
1194
1195 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
1196 int security_unix_may_send(struct socket *sock,  struct socket *other);
1197 int security_socket_create(int family, int type, int protocol, int kern);
1198 int security_socket_post_create(struct socket *sock, int family,
1199                                 int type, int protocol, int kern);
1200 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
1201 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
1202 int security_socket_listen(struct socket *sock, int backlog);
1203 int security_socket_accept(struct socket *sock, struct socket *newsock);
1204 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
1205 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1206                             int size, int flags);
1207 int security_socket_getsockname(struct socket *sock);
1208 int security_socket_getpeername(struct socket *sock);
1209 int security_socket_getsockopt(struct socket *sock, int level, int optname);
1210 int security_socket_setsockopt(struct socket *sock, int level, int optname);
1211 int security_socket_shutdown(struct socket *sock, int how);
1212 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
1213 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1214                                       int __user *optlen, unsigned len);
1215 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
1216 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
1217 void security_sk_free(struct sock *sk);
1218 void security_sk_clone(const struct sock *sk, struct sock *newsk);
1219 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
1220 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
1221 void security_sock_graft(struct sock*sk, struct socket *parent);
1222 int security_inet_conn_request(struct sock *sk,
1223                         struct sk_buff *skb, struct request_sock *req);
1224 void security_inet_csk_clone(struct sock *newsk,
1225                         const struct request_sock *req);
1226 void security_inet_conn_established(struct sock *sk,
1227                         struct sk_buff *skb);
1228 int security_secmark_relabel_packet(u32 secid);
1229 void security_secmark_refcount_inc(void);
1230 void security_secmark_refcount_dec(void);
1231 int security_tun_dev_alloc_security(void **security);
1232 void security_tun_dev_free_security(void *security);
1233 int security_tun_dev_create(void);
1234 int security_tun_dev_attach_queue(void *security);
1235 int security_tun_dev_attach(struct sock *sk, void *security);
1236 int security_tun_dev_open(void *security);
1237
1238 #else   /* CONFIG_SECURITY_NETWORK */
1239 static inline int security_unix_stream_connect(struct sock *sock,
1240                                                struct sock *other,
1241                                                struct sock *newsk)
1242 {
1243         return 0;
1244 }
1245
1246 static inline int security_unix_may_send(struct socket *sock,
1247                                          struct socket *other)
1248 {
1249         return 0;
1250 }
1251
1252 static inline int security_socket_create(int family, int type,
1253                                          int protocol, int kern)
1254 {
1255         return 0;
1256 }
1257
1258 static inline int security_socket_post_create(struct socket *sock,
1259                                               int family,
1260                                               int type,
1261                                               int protocol, int kern)
1262 {
1263         return 0;
1264 }
1265
1266 static inline int security_socket_bind(struct socket *sock,
1267                                        struct sockaddr *address,
1268                                        int addrlen)
1269 {
1270         return 0;
1271 }
1272
1273 static inline int security_socket_connect(struct socket *sock,
1274                                           struct sockaddr *address,
1275                                           int addrlen)
1276 {
1277         return 0;
1278 }
1279
1280 static inline int security_socket_listen(struct socket *sock, int backlog)
1281 {
1282         return 0;
1283 }
1284
1285 static inline int security_socket_accept(struct socket *sock,
1286                                          struct socket *newsock)
1287 {
1288         return 0;
1289 }
1290
1291 static inline int security_socket_sendmsg(struct socket *sock,
1292                                           struct msghdr *msg, int size)
1293 {
1294         return 0;
1295 }
1296
1297 static inline int security_socket_recvmsg(struct socket *sock,
1298                                           struct msghdr *msg, int size,
1299                                           int flags)
1300 {
1301         return 0;
1302 }
1303
1304 static inline int security_socket_getsockname(struct socket *sock)
1305 {
1306         return 0;
1307 }
1308
1309 static inline int security_socket_getpeername(struct socket *sock)
1310 {
1311         return 0;
1312 }
1313
1314 static inline int security_socket_getsockopt(struct socket *sock,
1315                                              int level, int optname)
1316 {
1317         return 0;
1318 }
1319
1320 static inline int security_socket_setsockopt(struct socket *sock,
1321                                              int level, int optname)
1322 {
1323         return 0;
1324 }
1325
1326 static inline int security_socket_shutdown(struct socket *sock, int how)
1327 {
1328         return 0;
1329 }
1330 static inline int security_sock_rcv_skb(struct sock *sk,
1331                                         struct sk_buff *skb)
1332 {
1333         return 0;
1334 }
1335
1336 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1337                                                     int __user *optlen, unsigned len)
1338 {
1339         return -ENOPROTOOPT;
1340 }
1341
1342 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1343 {
1344         return -ENOPROTOOPT;
1345 }
1346
1347 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1348 {
1349         return 0;
1350 }
1351
1352 static inline void security_sk_free(struct sock *sk)
1353 {
1354 }
1355
1356 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
1357 {
1358 }
1359
1360 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1361 {
1362 }
1363
1364 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1365 {
1366 }
1367
1368 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
1369 {
1370 }
1371
1372 static inline int security_inet_conn_request(struct sock *sk,
1373                         struct sk_buff *skb, struct request_sock *req)
1374 {
1375         return 0;
1376 }
1377
1378 static inline void security_inet_csk_clone(struct sock *newsk,
1379                         const struct request_sock *req)
1380 {
1381 }
1382
1383 static inline void security_inet_conn_established(struct sock *sk,
1384                         struct sk_buff *skb)
1385 {
1386 }
1387
1388 static inline int security_secmark_relabel_packet(u32 secid)
1389 {
1390         return 0;
1391 }
1392
1393 static inline void security_secmark_refcount_inc(void)
1394 {
1395 }
1396
1397 static inline void security_secmark_refcount_dec(void)
1398 {
1399 }
1400
1401 static inline int security_tun_dev_alloc_security(void **security)
1402 {
1403         return 0;
1404 }
1405
1406 static inline void security_tun_dev_free_security(void *security)
1407 {
1408 }
1409
1410 static inline int security_tun_dev_create(void)
1411 {
1412         return 0;
1413 }
1414
1415 static inline int security_tun_dev_attach_queue(void *security)
1416 {
1417         return 0;
1418 }
1419
1420 static inline int security_tun_dev_attach(struct sock *sk, void *security)
1421 {
1422         return 0;
1423 }
1424
1425 static inline int security_tun_dev_open(void *security)
1426 {
1427         return 0;
1428 }
1429 #endif  /* CONFIG_SECURITY_NETWORK */
1430
1431 #ifdef CONFIG_SECURITY_INFINIBAND
1432 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey);
1433 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num);
1434 int security_ib_alloc_security(void **sec);
1435 void security_ib_free_security(void *sec);
1436 #else   /* CONFIG_SECURITY_INFINIBAND */
1437 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
1438 {
1439         return 0;
1440 }
1441
1442 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
1443 {
1444         return 0;
1445 }
1446
1447 static inline int security_ib_alloc_security(void **sec)
1448 {
1449         return 0;
1450 }
1451
1452 static inline void security_ib_free_security(void *sec)
1453 {
1454 }
1455 #endif  /* CONFIG_SECURITY_INFINIBAND */
1456
1457 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1458
1459 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1460                                struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
1461 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
1462 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
1463 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
1464 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
1465 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1466                                       struct xfrm_sec_ctx *polsec, u32 secid);
1467 int security_xfrm_state_delete(struct xfrm_state *x);
1468 void security_xfrm_state_free(struct xfrm_state *x);
1469 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1470 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1471                                        struct xfrm_policy *xp,
1472                                        const struct flowi *fl);
1473 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
1474 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
1475
1476 #else   /* CONFIG_SECURITY_NETWORK_XFRM */
1477
1478 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1479                                              struct xfrm_user_sec_ctx *sec_ctx,
1480                                              gfp_t gfp)
1481 {
1482         return 0;
1483 }
1484
1485 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
1486 {
1487         return 0;
1488 }
1489
1490 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1491 {
1492 }
1493
1494 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1495 {
1496         return 0;
1497 }
1498
1499 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
1500                                         struct xfrm_user_sec_ctx *sec_ctx)
1501 {
1502         return 0;
1503 }
1504
1505 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1506                                         struct xfrm_sec_ctx *polsec, u32 secid)
1507 {
1508         return 0;
1509 }
1510
1511 static inline void security_xfrm_state_free(struct xfrm_state *x)
1512 {
1513 }
1514
1515 static inline int security_xfrm_state_delete(struct xfrm_state *x)
1516 {
1517         return 0;
1518 }
1519
1520 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1521 {
1522         return 0;
1523 }
1524
1525 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1526                         struct xfrm_policy *xp, const struct flowi *fl)
1527 {
1528         return 1;
1529 }
1530
1531 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1532 {
1533         return 0;
1534 }
1535
1536 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1537 {
1538 }
1539
1540 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1541
1542 #ifdef CONFIG_SECURITY_PATH
1543 int security_path_unlink(const struct path *dir, struct dentry *dentry);
1544 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode);
1545 int security_path_rmdir(const struct path *dir, struct dentry *dentry);
1546 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
1547                         unsigned int dev);
1548 int security_path_truncate(const struct path *path);
1549 int security_path_symlink(const struct path *dir, struct dentry *dentry,
1550                           const char *old_name);
1551 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
1552                        struct dentry *new_dentry);
1553 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
1554                          const struct path *new_dir, struct dentry *new_dentry,
1555                          unsigned int flags);
1556 int security_path_chmod(const struct path *path, umode_t mode);
1557 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid);
1558 int security_path_chroot(const struct path *path);
1559 #else   /* CONFIG_SECURITY_PATH */
1560 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry)
1561 {
1562         return 0;
1563 }
1564
1565 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry,
1566                                       umode_t mode)
1567 {
1568         return 0;
1569 }
1570
1571 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry)
1572 {
1573         return 0;
1574 }
1575
1576 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry,
1577                                       umode_t mode, unsigned int dev)
1578 {
1579         return 0;
1580 }
1581
1582 static inline int security_path_truncate(const struct path *path)
1583 {
1584         return 0;
1585 }
1586
1587 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry,
1588                                         const char *old_name)
1589 {
1590         return 0;
1591 }
1592
1593 static inline int security_path_link(struct dentry *old_dentry,
1594                                      const struct path *new_dir,
1595                                      struct dentry *new_dentry)
1596 {
1597         return 0;
1598 }
1599
1600 static inline int security_path_rename(const struct path *old_dir,
1601                                        struct dentry *old_dentry,
1602                                        const struct path *new_dir,
1603                                        struct dentry *new_dentry,
1604                                        unsigned int flags)
1605 {
1606         return 0;
1607 }
1608
1609 static inline int security_path_chmod(const struct path *path, umode_t mode)
1610 {
1611         return 0;
1612 }
1613
1614 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
1615 {
1616         return 0;
1617 }
1618
1619 static inline int security_path_chroot(const struct path *path)
1620 {
1621         return 0;
1622 }
1623 #endif  /* CONFIG_SECURITY_PATH */
1624
1625 #ifdef CONFIG_KEYS
1626 #ifdef CONFIG_SECURITY
1627
1628 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
1629 void security_key_free(struct key *key);
1630 int security_key_permission(key_ref_t key_ref,
1631                             const struct cred *cred, unsigned perm);
1632 int security_key_getsecurity(struct key *key, char **_buffer);
1633
1634 #else
1635
1636 static inline int security_key_alloc(struct key *key,
1637                                      const struct cred *cred,
1638                                      unsigned long flags)
1639 {
1640         return 0;
1641 }
1642
1643 static inline void security_key_free(struct key *key)
1644 {
1645 }
1646
1647 static inline int security_key_permission(key_ref_t key_ref,
1648                                           const struct cred *cred,
1649                                           unsigned perm)
1650 {
1651         return 0;
1652 }
1653
1654 static inline int security_key_getsecurity(struct key *key, char **_buffer)
1655 {
1656         *_buffer = NULL;
1657         return 0;
1658 }
1659
1660 #endif
1661 #endif /* CONFIG_KEYS */
1662
1663 #ifdef CONFIG_AUDIT
1664 #ifdef CONFIG_SECURITY
1665 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
1666 int security_audit_rule_known(struct audit_krule *krule);
1667 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1668                               struct audit_context *actx);
1669 void security_audit_rule_free(void *lsmrule);
1670
1671 #else
1672
1673 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
1674                                            void **lsmrule)
1675 {
1676         return 0;
1677 }
1678
1679 static inline int security_audit_rule_known(struct audit_krule *krule)
1680 {
1681         return 0;
1682 }
1683
1684 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
1685                                    void *lsmrule, struct audit_context *actx)
1686 {
1687         return 0;
1688 }
1689
1690 static inline void security_audit_rule_free(void *lsmrule)
1691 { }
1692
1693 #endif /* CONFIG_SECURITY */
1694 #endif /* CONFIG_AUDIT */
1695
1696 #ifdef CONFIG_SECURITYFS
1697
1698 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
1699                                              struct dentry *parent, void *data,
1700                                              const struct file_operations *fops);
1701 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
1702 struct dentry *securityfs_create_symlink(const char *name,
1703                                          struct dentry *parent,
1704                                          const char *target,
1705                                          const struct inode_operations *iops);
1706 extern void securityfs_remove(struct dentry *dentry);
1707
1708 #else /* CONFIG_SECURITYFS */
1709
1710 static inline struct dentry *securityfs_create_dir(const char *name,
1711                                                    struct dentry *parent)
1712 {
1713         return ERR_PTR(-ENODEV);
1714 }
1715
1716 static inline struct dentry *securityfs_create_file(const char *name,
1717                                                     umode_t mode,
1718                                                     struct dentry *parent,
1719                                                     void *data,
1720                                                     const struct file_operations *fops)
1721 {
1722         return ERR_PTR(-ENODEV);
1723 }
1724
1725 static inline struct dentry *securityfs_create_symlink(const char *name,
1726                                         struct dentry *parent,
1727                                         const char *target,
1728                                         const struct inode_operations *iops)
1729 {
1730         return ERR_PTR(-ENODEV);
1731 }
1732
1733 static inline void securityfs_remove(struct dentry *dentry)
1734 {}
1735
1736 #endif
1737
1738 #ifdef CONFIG_BPF_SYSCALL
1739 union bpf_attr;
1740 struct bpf_map;
1741 struct bpf_prog;
1742 struct bpf_prog_aux;
1743 #ifdef CONFIG_SECURITY
1744 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size);
1745 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode);
1746 extern int security_bpf_prog(struct bpf_prog *prog);
1747 extern int security_bpf_map_alloc(struct bpf_map *map);
1748 extern void security_bpf_map_free(struct bpf_map *map);
1749 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux);
1750 extern void security_bpf_prog_free(struct bpf_prog_aux *aux);
1751 #else
1752 static inline int security_bpf(int cmd, union bpf_attr *attr,
1753                                              unsigned int size)
1754 {
1755         return 0;
1756 }
1757
1758 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode)
1759 {
1760         return 0;
1761 }
1762
1763 static inline int security_bpf_prog(struct bpf_prog *prog)
1764 {
1765         return 0;
1766 }
1767
1768 static inline int security_bpf_map_alloc(struct bpf_map *map)
1769 {
1770         return 0;
1771 }
1772
1773 static inline void security_bpf_map_free(struct bpf_map *map)
1774 { }
1775
1776 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
1777 {
1778         return 0;
1779 }
1780
1781 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux)
1782 { }
1783 #endif /* CONFIG_SECURITY */
1784 #endif /* CONFIG_BPF_SYSCALL */
1785
1786 #ifdef CONFIG_SECURITY
1787
1788 static inline char *alloc_secdata(void)
1789 {
1790         return (char *)get_zeroed_page(GFP_KERNEL);
1791 }
1792
1793 static inline void free_secdata(void *secdata)
1794 {
1795         free_page((unsigned long)secdata);
1796 }
1797
1798 #else
1799
1800 static inline char *alloc_secdata(void)
1801 {
1802         return (char *)1;
1803 }
1804
1805 static inline void free_secdata(void *secdata)
1806 { }
1807 #endif /* CONFIG_SECURITY */
1808
1809 #ifdef CONFIG_LOCK_DOWN_KERNEL
1810 extern void __init init_lockdown(void);
1811 #else
1812 static inline void __init init_lockdown(void)
1813 {
1814 }
1815 #endif
1816
1817 #endif /* ! __LINUX_SECURITY_H */
1818