include/linux/security.h

   1 /*
   2  * Linux Security plug
   3  *
   4  * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
   5  * Copyright (C) 2001 Greg Kroah-Hartman <greg@kroah.com>
   6  * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
   7  * Copyright (C) 2001 James Morris <jmorris@intercode.com.au>
   8  * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group)
   9  * Copyright (C) 2016 Mellanox Techonologies
  10  *
  11  *      This program is free software; you can redistribute it and/or modify
  12  *      it under the terms of the GNU General Public License as published by
  13  *      the Free Software Foundation; either version 2 of the License, or
  14  *      (at your option) any later version.
  15  *
  16  *      Due to this file being licensed under the GPL there is controversy over
  17  *      whether this permits you to write a module that #includes this file
  18  *      without placing your module under the GPL.  Please consult a lawyer for
  19  *      advice before doing this.
  20  *
  21  */
  22
  23 #ifndef __LINUX_SECURITY_H
  24 #define __LINUX_SECURITY_H
  25
  26 #include <linux/key.h>
  27 #include <linux/capability.h>
  28 #include <linux/fs.h>
  29 #include <linux/slab.h>
  30 #include <linux/err.h>
  31 #include <linux/string.h>
  32 #include <linux/mm.h>
  33 #include <linux/fs.h>
  34
  35 struct linux_binprm;
  36 struct cred;
  37 struct rlimit;
  38 struct siginfo;
  39 struct sem_array;
  40 struct sembuf;
  41 struct kern_ipc_perm;
  42 struct audit_context;
  43 struct super_block;
  44 struct inode;
  45 struct dentry;
  46 struct file;
  47 struct vfsmount;
  48 struct path;
  49 struct qstr;
  50 struct iattr;
  51 struct fown_struct;
  52 struct file_operations;
  53 struct shmid_kernel;
  54 struct msg_msg;
  55 struct msg_queue;
  56 struct xattr;
  57 struct xfrm_sec_ctx;
  58 struct mm_struct;
  59
  60 /* If capable should audit the security request */
  61 #define SECURITY_CAP_NOAUDIT 0
  62 #define SECURITY_CAP_AUDIT 1
  63
  64 /* LSM Agnostic defines for sb_set_mnt_opts */
  65 #define SECURITY_LSM_NATIVE_LABELS      1
  66
  67 struct ctl_table;
  68 struct audit_krule;
  69 struct user_namespace;
  70 struct timezone;
  71
  72 enum lsm_event {
  73         LSM_POLICY_CHANGE,
  74 };
  75
  76 /* These functions are in security/commoncap.c */
  77 extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
  78                        int cap, int audit);
  79 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz);
  80 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
  81 extern int cap_ptrace_traceme(struct task_struct *parent);
  82 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
  83 extern int cap_capset(struct cred *new, const struct cred *old,
  84                       const kernel_cap_t *effective,
  85                       const kernel_cap_t *inheritable,
  86                       const kernel_cap_t *permitted);
  87 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
  88 extern int cap_bprm_secureexec(struct linux_binprm *bprm);
  89 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
  90                               const void *value, size_t size, int flags);
  91 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
  92 extern int cap_inode_need_killpriv(struct dentry *dentry);
  93 extern int cap_inode_killpriv(struct dentry *dentry);
  94 extern int cap_inode_getsecurity(struct inode *inode, const char *name,
  95                                  void **buffer, bool alloc);
  96 extern int cap_mmap_addr(unsigned long addr);
  97 extern int cap_mmap_file(struct file *file, unsigned long reqprot,
  98                          unsigned long prot, unsigned long flags);
  99 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
 100 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 101                           unsigned long arg4, unsigned long arg5);
 102 extern int cap_task_setscheduler(struct task_struct *p);
 103 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
 104 extern int cap_task_setnice(struct task_struct *p, int nice);
 105 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
 106
 107 struct msghdr;
 108 struct sk_buff;
 109 struct sock;
 110 struct sockaddr;
 111 struct socket;
 112 struct flowi;
 113 struct dst_entry;
 114 struct xfrm_selector;
 115 struct xfrm_policy;
 116 struct xfrm_state;
 117 struct xfrm_user_sec_ctx;
 118 struct seq_file;
 119
 120 #ifdef CONFIG_MMU
 121 extern unsigned long mmap_min_addr;
 122 extern unsigned long dac_mmap_min_addr;
 123 #else
 124 #define mmap_min_addr           0UL
 125 #define dac_mmap_min_addr       0UL
 126 #endif
 127
 128 /*
 129  * Values used in the task_security_ops calls
 130  */
 131 /* setuid or setgid, id0 == uid or gid */
 132 #define LSM_SETID_ID    1
 133
 134 /* setreuid or setregid, id0 == real, id1 == eff */
 135 #define LSM_SETID_RE    2
 136
 137 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
 138 #define LSM_SETID_RES   4
 139
 140 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
 141 #define LSM_SETID_FS    8
 142
 143 /* Flags for security_task_prlimit(). */
 144 #define LSM_PRLIMIT_READ  1
 145 #define LSM_PRLIMIT_WRITE 2
 146
 147 /* forward declares to avoid warnings */
 148 struct sched_param;
 149 struct request_sock;
 150
 151 /* bprm->unsafe reasons */
 152 #define LSM_UNSAFE_SHARE        1
 153 #define LSM_UNSAFE_PTRACE       2
 154 #define LSM_UNSAFE_NO_NEW_PRIVS 4
 155
 156 #ifdef CONFIG_MMU
 157 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
 158                                  void __user *buffer, size_t *lenp, loff_t *ppos);
 159 #endif
 160
 161 /* security_inode_init_security callback function to write xattrs */
 162 typedef int (*initxattrs) (struct inode *inode,
 163                            const struct xattr *xattr_array, void *fs_data);
 164
 165 #ifdef CONFIG_SECURITY
 166
 167 struct security_mnt_opts {
 168         char **mnt_opts;
 169         int *mnt_opts_flags;
 170         int num_mnt_opts;
 171 };
 172
 173 int call_lsm_notifier(enum lsm_event event, void *data);
 174 int register_lsm_notifier(struct notifier_block *nb);
 175 int unregister_lsm_notifier(struct notifier_block *nb);
 176
 177 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
 178 {
 179         opts->mnt_opts = NULL;
 180         opts->mnt_opts_flags = NULL;
 181         opts->num_mnt_opts = 0;
 182 }
 183
 184 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
 185 {
 186         int i;
 187         if (opts->mnt_opts)
 188                 for (i = 0; i < opts->num_mnt_opts; i++)
 189                         kfree(opts->mnt_opts[i]);
 190         kfree(opts->mnt_opts);
 191         opts->mnt_opts = NULL;
 192         kfree(opts->mnt_opts_flags);
 193         opts->mnt_opts_flags = NULL;
 194         opts->num_mnt_opts = 0;
 195 }
 196
 197 /* prototypes */
 198 extern int security_init(void);
 199
 200 /* Security operations */
 201 int security_binder_set_context_mgr(struct task_struct *mgr);
 202 int security_binder_transaction(struct task_struct *from,
 203                                 struct task_struct *to);
 204 int security_binder_transfer_binder(struct task_struct *from,
 205                                     struct task_struct *to);
 206 int security_binder_transfer_file(struct task_struct *from,
 207                                   struct task_struct *to, struct file *file);
 208 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
 209 int security_ptrace_traceme(struct task_struct *parent);
 210 int security_capget(struct task_struct *target,
 211                     kernel_cap_t *effective,
 212                     kernel_cap_t *inheritable,
 213                     kernel_cap_t *permitted);
 214 int security_capset(struct cred *new, const struct cred *old,
 215                     const kernel_cap_t *effective,
 216                     const kernel_cap_t *inheritable,
 217                     const kernel_cap_t *permitted);
 218 int security_capable(const struct cred *cred, struct user_namespace *ns,
 219                         int cap);
 220 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
 221                              int cap);
 222 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
 223 int security_quota_on(struct dentry *dentry);
 224 int security_syslog(int type);
 225 int security_settime64(const struct timespec64 *ts, const struct timezone *tz);
 226 static inline int security_settime(const struct timespec *ts, const struct timezone *tz)
 227 {
 228         struct timespec64 ts64 = timespec_to_timespec64(*ts);
 229
 230         return security_settime64(&ts64, tz);
 231 }
 232 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
 233 int security_bprm_set_creds(struct linux_binprm *bprm);
 234 int security_bprm_check(struct linux_binprm *bprm);
 235 void security_bprm_committing_creds(struct linux_binprm *bprm);
 236 void security_bprm_committed_creds(struct linux_binprm *bprm);
 237 int security_bprm_secureexec(struct linux_binprm *bprm);
 238 int security_sb_alloc(struct super_block *sb);
 239 void security_sb_free(struct super_block *sb);
 240 int security_sb_copy_data(char *orig, char *copy);
 241 int security_sb_remount(struct super_block *sb, void *data);
 242 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
 243 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
 244 int security_sb_statfs(struct dentry *dentry);
 245 int security_sb_mount(const char *dev_name, const struct path *path,
 246                       const char *type, unsigned long flags, void *data);
 247 int security_sb_umount(struct vfsmount *mnt, int flags);
 248 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path);
 249 int security_sb_set_mnt_opts(struct super_block *sb,
 250                                 struct security_mnt_opts *opts,
 251                                 unsigned long kern_flags,
 252                                 unsigned long *set_kern_flags);
 253 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 254                                 struct super_block *newsb,
 255                                 unsigned long kern_flags,
 256                                 unsigned long *set_kern_flags);
 257 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
 258 int security_dentry_init_security(struct dentry *dentry, int mode,
 259                                         const struct qstr *name, void **ctx,
 260                                         u32 *ctxlen);
 261 int security_dentry_create_files_as(struct dentry *dentry, int mode,
 262                                         struct qstr *name,
 263                                         const struct cred *old,
 264                                         struct cred *new);
 265
 266 int security_inode_alloc(struct inode *inode);
 267 void security_inode_free(struct inode *inode);
 268 int security_inode_init_security(struct inode *inode, struct inode *dir,
 269                                  const struct qstr *qstr,
 270                                  initxattrs initxattrs, void *fs_data);
 271 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
 272                                      const struct qstr *qstr, const char **name,
 273                                      void **value, size_t *len);
 274 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
 275 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 276                          struct dentry *new_dentry);
 277 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
 278 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 279                            const char *old_name);
 280 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
 281 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
 282 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
 283 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 284                           struct inode *new_dir, struct dentry *new_dentry,
 285                           unsigned int flags);
 286 int security_inode_readlink(struct dentry *dentry);
 287 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
 288                                bool rcu);
 289 int security_inode_permission(struct inode *inode, int mask);
 290 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
 291 int security_inode_getattr(const struct path *path);
 292 int security_inode_setxattr(struct dentry *dentry, const char *name,
 293                             const void *value, size_t size, int flags);
 294 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 295                                   const void *value, size_t size, int flags);
 296 int security_inode_getxattr(struct dentry *dentry, const char *name);
 297 int security_inode_listxattr(struct dentry *dentry);
 298 int security_inode_removexattr(struct dentry *dentry, const char *name);
 299 int security_inode_need_killpriv(struct dentry *dentry);
 300 int security_inode_killpriv(struct dentry *dentry);
 301 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc);
 302 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
 303 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
 304 void security_inode_getsecid(struct inode *inode, u32 *secid);
 305 int security_inode_copy_up(struct dentry *src, struct cred **new);
 306 int security_inode_copy_up_xattr(const char *name);
 307 int security_file_permission(struct file *file, int mask);
 308 int security_file_alloc(struct file *file);
 309 void security_file_free(struct file *file);
 310 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
 311 int security_mmap_file(struct file *file, unsigned long prot,
 312                         unsigned long flags);
 313 int security_mmap_addr(unsigned long addr);
 314 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 315                            unsigned long prot);
 316 int security_file_lock(struct file *file, unsigned int cmd);
 317 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
 318 void security_file_set_fowner(struct file *file);
 319 int security_file_send_sigiotask(struct task_struct *tsk,
 320                                  struct fown_struct *fown, int sig);
 321 int security_file_receive(struct file *file);
 322 int security_file_open(struct file *file, const struct cred *cred);
 323 int security_task_create(unsigned long clone_flags);
 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, char *name, char **value);
 382 int security_setprocattr(const char *name, void *value, size_t size);
 383 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
 384 int security_ismaclabel(const char *name);
 385 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
 386 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
 387 void security_release_secctx(char *secdata, u32 seclen);
 388
 389 void security_inode_invalidate_secctx(struct inode *inode);
 390 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
 391 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
 392 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
 393 #else /* CONFIG_SECURITY */
 394 struct security_mnt_opts {
 395 };
 396
 397 static inline int call_lsm_notifier(enum lsm_event event, void *data)
 398 {
 399         return 0;
 400 }
 401
 402 static inline int register_lsm_notifier(struct notifier_block *nb)
 403 {
 404         return 0;
 405 }
 406
 407 static inline  int unregister_lsm_notifier(struct notifier_block *nb)
 408 {
 409         return 0;
 410 }
 411
 412 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
 413 {
 414 }
 415
 416 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
 417 {
 418 }
 419
 420 /*
 421  * This is the default capabilities functionality.  Most of these functions
 422  * are just stubbed out, but a few must call the proper capable code.
 423  */
 424
 425 static inline int security_init(void)
 426 {
 427         return 0;
 428 }
 429
 430 static inline int security_binder_set_context_mgr(struct task_struct *mgr)
 431 {
 432         return 0;
 433 }
 434
 435 static inline int security_binder_transaction(struct task_struct *from,
 436                                               struct task_struct *to)
 437 {
 438         return 0;
 439 }
 440
 441 static inline int security_binder_transfer_binder(struct task_struct *from,
 442                                                   struct task_struct *to)
 443 {
 444         return 0;
 445 }
 446
 447 static inline int security_binder_transfer_file(struct task_struct *from,
 448                                                 struct task_struct *to,
 449                                                 struct file *file)
 450 {
 451         return 0;
 452 }
 453
 454 static inline int security_ptrace_access_check(struct task_struct *child,
 455                                              unsigned int mode)
 456 {
 457         return cap_ptrace_access_check(child, mode);
 458 }
 459
 460 static inline int security_ptrace_traceme(struct task_struct *parent)
 461 {
 462         return cap_ptrace_traceme(parent);
 463 }
 464
 465 static inline int security_capget(struct task_struct *target,
 466                                    kernel_cap_t *effective,
 467                                    kernel_cap_t *inheritable,
 468                                    kernel_cap_t *permitted)
 469 {
 470         return cap_capget(target, effective, inheritable, permitted);
 471 }
 472
 473 static inline int security_capset(struct cred *new,
 474                                    const struct cred *old,
 475                                    const kernel_cap_t *effective,
 476                                    const kernel_cap_t *inheritable,
 477                                    const kernel_cap_t *permitted)
 478 {
 479         return cap_capset(new, old, effective, inheritable, permitted);
 480 }
 481
 482 static inline int security_capable(const struct cred *cred,
 483                                    struct user_namespace *ns, int cap)
 484 {
 485         return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT);
 486 }
 487
 488 static inline int security_capable_noaudit(const struct cred *cred,
 489                                            struct user_namespace *ns, int cap) {
 490         return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
 491 }
 492
 493 static inline int security_quotactl(int cmds, int type, int id,
 494                                      struct super_block *sb)
 495 {
 496         return 0;
 497 }
 498
 499 static inline int security_quota_on(struct dentry *dentry)
 500 {
 501         return 0;
 502 }
 503
 504 static inline int security_syslog(int type)
 505 {
 506         return 0;
 507 }
 508
 509 static inline int security_settime64(const struct timespec64 *ts,
 510                                      const struct timezone *tz)
 511 {
 512         return cap_settime(ts, tz);
 513 }
 514
 515 static inline int security_settime(const struct timespec *ts,
 516                                    const struct timezone *tz)
 517 {
 518         struct timespec64 ts64 = timespec_to_timespec64(*ts);
 519
 520         return cap_settime(&ts64, tz);
 521 }
 522
 523 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 524 {
 525         return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages));
 526 }
 527
 528 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
 529 {
 530         return cap_bprm_set_creds(bprm);
 531 }
 532
 533 static inline int security_bprm_check(struct linux_binprm *bprm)
 534 {
 535         return 0;
 536 }
 537
 538 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
 539 {
 540 }
 541
 542 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
 543 {
 544 }
 545
 546 static inline int security_bprm_secureexec(struct linux_binprm *bprm)
 547 {
 548         return cap_bprm_secureexec(bprm);
 549 }
 550
 551 static inline int security_sb_alloc(struct super_block *sb)
 552 {
 553         return 0;
 554 }
 555
 556 static inline void security_sb_free(struct super_block *sb)
 557 { }
 558
 559 static inline int security_sb_copy_data(char *orig, char *copy)
 560 {
 561         return 0;
 562 }
 563
 564 static inline int security_sb_remount(struct super_block *sb, void *data)
 565 {
 566         return 0;
 567 }
 568
 569 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
 570 {
 571         return 0;
 572 }
 573
 574 static inline int security_sb_show_options(struct seq_file *m,
 575                                            struct super_block *sb)
 576 {
 577         return 0;
 578 }
 579
 580 static inline int security_sb_statfs(struct dentry *dentry)
 581 {
 582         return 0;
 583 }
 584
 585 static inline int security_sb_mount(const char *dev_name, const struct path *path,
 586                                     const char *type, unsigned long flags,
 587                                     void *data)
 588 {
 589         return 0;
 590 }
 591
 592 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
 593 {
 594         return 0;
 595 }
 596
 597 static inline int security_sb_pivotroot(const struct path *old_path,
 598                                         const struct path *new_path)
 599 {
 600         return 0;
 601 }
 602
 603 static inline int security_sb_set_mnt_opts(struct super_block *sb,
 604                                            struct security_mnt_opts *opts,
 605                                            unsigned long kern_flags,
 606                                            unsigned long *set_kern_flags)
 607 {
 608         return 0;
 609 }
 610
 611 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 612                                               struct super_block *newsb,
 613                                               unsigned long kern_flags,
 614                                               unsigned long *set_kern_flags)
 615 {
 616         return 0;
 617 }
 618
 619 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
 620 {
 621         return 0;
 622 }
 623
 624 static inline int security_inode_alloc(struct inode *inode)
 625 {
 626         return 0;
 627 }
 628
 629 static inline void security_inode_free(struct inode *inode)
 630 { }
 631
 632 static inline int security_dentry_init_security(struct dentry *dentry,
 633                                                  int mode,
 634                                                  const struct qstr *name,
 635                                                  void **ctx,
 636                                                  u32 *ctxlen)
 637 {
 638         return -EOPNOTSUPP;
 639 }
 640
 641 static inline int security_dentry_create_files_as(struct dentry *dentry,
 642                                                   int mode, struct qstr *name,
 643                                                   const struct cred *old,
 644                                                   struct cred *new)
 645 {
 646         return 0;
 647 }
 648
 649
 650 static inline int security_inode_init_security(struct inode *inode,
 651                                                 struct inode *dir,
 652                                                 const struct qstr *qstr,
 653                                                 const initxattrs xattrs,
 654                                                 void *fs_data)
 655 {
 656         return 0;
 657 }
 658
 659 static inline int security_old_inode_init_security(struct inode *inode,
 660                                                    struct inode *dir,
 661                                                    const struct qstr *qstr,
 662                                                    const char **name,
 663                                                    void **value, size_t *len)
 664 {
 665         return -EOPNOTSUPP;
 666 }
 667
 668 static inline int security_inode_create(struct inode *dir,
 669                                          struct dentry *dentry,
 670                                          umode_t mode)
 671 {
 672         return 0;
 673 }
 674
 675 static inline int security_inode_link(struct dentry *old_dentry,
 676                                        struct inode *dir,
 677                                        struct dentry *new_dentry)
 678 {
 679         return 0;
 680 }
 681
 682 static inline int security_inode_unlink(struct inode *dir,
 683                                          struct dentry *dentry)
 684 {
 685         return 0;
 686 }
 687
 688 static inline int security_inode_symlink(struct inode *dir,
 689                                           struct dentry *dentry,
 690                                           const char *old_name)
 691 {
 692         return 0;
 693 }
 694
 695 static inline int security_inode_mkdir(struct inode *dir,
 696                                         struct dentry *dentry,
 697                                         int mode)
 698 {
 699         return 0;
 700 }
 701
 702 static inline int security_inode_rmdir(struct inode *dir,
 703                                         struct dentry *dentry)
 704 {
 705         return 0;
 706 }
 707
 708 static inline int security_inode_mknod(struct inode *dir,
 709                                         struct dentry *dentry,
 710                                         int mode, dev_t dev)
 711 {
 712         return 0;
 713 }
 714
 715 static inline int security_inode_rename(struct inode *old_dir,
 716                                          struct dentry *old_dentry,
 717                                          struct inode *new_dir,
 718                                          struct dentry *new_dentry,
 719                                          unsigned int flags)
 720 {
 721         return 0;
 722 }
 723
 724 static inline int security_inode_readlink(struct dentry *dentry)
 725 {
 726         return 0;
 727 }
 728
 729 static inline int security_inode_follow_link(struct dentry *dentry,
 730                                              struct inode *inode,
 731                                              bool rcu)
 732 {
 733         return 0;
 734 }
 735
 736 static inline int security_inode_permission(struct inode *inode, int mask)
 737 {
 738         return 0;
 739 }
 740
 741 static inline int security_inode_setattr(struct dentry *dentry,
 742                                           struct iattr *attr)
 743 {
 744         return 0;
 745 }
 746
 747 static inline int security_inode_getattr(const struct path *path)
 748 {
 749         return 0;
 750 }
 751
 752 static inline int security_inode_setxattr(struct dentry *dentry,
 753                 const char *name, const void *value, size_t size, int flags)
 754 {
 755         return cap_inode_setxattr(dentry, name, value, size, flags);
 756 }
 757
 758 static inline void security_inode_post_setxattr(struct dentry *dentry,
 759                 const char *name, const void *value, size_t size, int flags)
 760 { }
 761
 762 static inline int security_inode_getxattr(struct dentry *dentry,
 763                         const char *name)
 764 {
 765         return 0;
 766 }
 767
 768 static inline int security_inode_listxattr(struct dentry *dentry)
 769 {
 770         return 0;
 771 }
 772
 773 static inline int security_inode_removexattr(struct dentry *dentry,
 774                         const char *name)
 775 {
 776         return cap_inode_removexattr(dentry, name);
 777 }
 778
 779 static inline int security_inode_need_killpriv(struct dentry *dentry)
 780 {
 781         return cap_inode_need_killpriv(dentry);
 782 }
 783
 784 static inline int security_inode_killpriv(struct dentry *dentry)
 785 {
 786         return cap_inode_killpriv(dentry);
 787 }
 788
 789 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
 790 {
 791         return -EOPNOTSUPP;
 792 }
 793
 794 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 795 {
 796         return -EOPNOTSUPP;
 797 }
 798
 799 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 800 {
 801         return 0;
 802 }
 803
 804 static inline void security_inode_getsecid(struct inode *inode, u32 *secid)
 805 {
 806         *secid = 0;
 807 }
 808
 809 static inline int security_inode_copy_up(struct dentry *src, struct cred **new)
 810 {
 811         return 0;
 812 }
 813
 814 static inline int security_inode_copy_up_xattr(const char *name)
 815 {
 816         return -EOPNOTSUPP;
 817 }
 818
 819 static inline int security_file_permission(struct file *file, int mask)
 820 {
 821         return 0;
 822 }
 823
 824 static inline int security_file_alloc(struct file *file)
 825 {
 826         return 0;
 827 }
 828
 829 static inline void security_file_free(struct file *file)
 830 { }
 831
 832 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
 833                                       unsigned long arg)
 834 {
 835         return 0;
 836 }
 837
 838 static inline int security_mmap_file(struct file *file, unsigned long prot,
 839                                      unsigned long flags)
 840 {
 841         return 0;
 842 }
 843
 844 static inline int security_mmap_addr(unsigned long addr)
 845 {
 846         return cap_mmap_addr(addr);
 847 }
 848
 849 static inline int security_file_mprotect(struct vm_area_struct *vma,
 850                                          unsigned long reqprot,
 851                                          unsigned long prot)
 852 {
 853         return 0;
 854 }
 855
 856 static inline int security_file_lock(struct file *file, unsigned int cmd)
 857 {
 858         return 0;
 859 }
 860
 861 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
 862                                       unsigned long arg)
 863 {
 864         return 0;
 865 }
 866
 867 static inline void security_file_set_fowner(struct file *file)
 868 {
 869         return;
 870 }
 871
 872 static inline int security_file_send_sigiotask(struct task_struct *tsk,
 873                                                struct fown_struct *fown,
 874                                                int sig)
 875 {
 876         return 0;
 877 }
 878
 879 static inline int security_file_receive(struct file *file)
 880 {
 881         return 0;
 882 }
 883
 884 static inline int security_file_open(struct file *file,
 885                                      const struct cred *cred)
 886 {
 887         return 0;
 888 }
 889
 890 static inline int security_task_create(unsigned long clone_flags)
 891 {
 892         return 0;
 893 }
 894
 895 static inline int security_task_alloc(struct task_struct *task,
 896                                       unsigned long clone_flags)
 897 {
 898         return 0;
 899 }
 900
 901 static inline void security_task_free(struct task_struct *task)
 902 { }
 903
 904 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 905 {
 906         return 0;
 907 }
 908
 909 static inline void security_cred_free(struct cred *cred)
 910 { }
 911
 912 static inline int security_prepare_creds(struct cred *new,
 913                                          const struct cred *old,
 914                                          gfp_t gfp)
 915 {
 916         return 0;
 917 }
 918
 919 static inline void security_transfer_creds(struct cred *new,
 920                                            const struct cred *old)
 921 {
 922 }
 923
 924 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
 925 {
 926         return 0;
 927 }
 928
 929 static inline int security_kernel_create_files_as(struct cred *cred,
 930                                                   struct inode *inode)
 931 {
 932         return 0;
 933 }
 934
 935 static inline int security_kernel_module_request(char *kmod_name)
 936 {
 937         return 0;
 938 }
 939
 940 static inline int security_kernel_read_file(struct file *file,
 941                                             enum kernel_read_file_id id)
 942 {
 943         return 0;
 944 }
 945
 946 static inline int security_kernel_post_read_file(struct file *file,
 947                                                  char *buf, loff_t size,
 948                                                  enum kernel_read_file_id id)
 949 {
 950         return 0;
 951 }
 952
 953 static inline int security_task_fix_setuid(struct cred *new,
 954                                            const struct cred *old,
 955                                            int flags)
 956 {
 957         return cap_task_fix_setuid(new, old, flags);
 958 }
 959
 960 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
 961 {
 962         return 0;
 963 }
 964
 965 static inline int security_task_getpgid(struct task_struct *p)
 966 {
 967         return 0;
 968 }
 969
 970 static inline int security_task_getsid(struct task_struct *p)
 971 {
 972         return 0;
 973 }
 974
 975 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
 976 {
 977         *secid = 0;
 978 }
 979
 980 static inline int security_task_setnice(struct task_struct *p, int nice)
 981 {
 982         return cap_task_setnice(p, nice);
 983 }
 984
 985 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
 986 {
 987         return cap_task_setioprio(p, ioprio);
 988 }
 989
 990 static inline int security_task_getioprio(struct task_struct *p)
 991 {
 992         return 0;
 993 }
 994
 995 static inline int security_task_prlimit(const struct cred *cred,
 996                                         const struct cred *tcred,
 997                                         unsigned int flags)
 998 {
 999         return 0;
1000 }
1001
1002 static inline int security_task_setrlimit(struct task_struct *p,
1003                                           unsigned int resource,
1004                                           struct rlimit *new_rlim)
1005 {
1006         return 0;
1007 }
1008
1009 static inline int security_task_setscheduler(struct task_struct *p)
1010 {
1011         return cap_task_setscheduler(p);
1012 }
1013
1014 static inline int security_task_getscheduler(struct task_struct *p)
1015 {
1016         return 0;
1017 }
1018
1019 static inline int security_task_movememory(struct task_struct *p)
1020 {
1021         return 0;
1022 }
1023
1024 static inline int security_task_kill(struct task_struct *p,
1025                                      struct siginfo *info, int sig,
1026                                      u32 secid)
1027 {
1028         return 0;
1029 }
1030
1031 static inline int security_task_prctl(int option, unsigned long arg2,
1032                                       unsigned long arg3,
1033                                       unsigned long arg4,
1034                                       unsigned long arg5)
1035 {
1036         return cap_task_prctl(option, arg2, arg3, arg4, arg5);
1037 }
1038
1039 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
1040 { }
1041
1042 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
1043                                           short flag)
1044 {
1045         return 0;
1046 }
1047
1048 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1049 {
1050         *secid = 0;
1051 }
1052
1053 static inline int security_msg_msg_alloc(struct msg_msg *msg)
1054 {
1055         return 0;
1056 }
1057
1058 static inline void security_msg_msg_free(struct msg_msg *msg)
1059 { }
1060
1061 static inline int security_msg_queue_alloc(struct msg_queue *msq)
1062 {
1063         return 0;
1064 }
1065
1066 static inline void security_msg_queue_free(struct msg_queue *msq)
1067 { }
1068
1069 static inline int security_msg_queue_associate(struct msg_queue *msq,
1070                                                int msqflg)
1071 {
1072         return 0;
1073 }
1074
1075 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
1076 {
1077         return 0;
1078 }
1079
1080 static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
1081                                             struct msg_msg *msg, int msqflg)
1082 {
1083         return 0;
1084 }
1085
1086 static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
1087                                             struct msg_msg *msg,
1088                                             struct task_struct *target,
1089                                             long type, int mode)
1090 {
1091         return 0;
1092 }
1093
1094 static inline int security_shm_alloc(struct shmid_kernel *shp)
1095 {
1096         return 0;
1097 }
1098
1099 static inline void security_shm_free(struct shmid_kernel *shp)
1100 { }
1101
1102 static inline int security_shm_associate(struct shmid_kernel *shp,
1103                                          int shmflg)
1104 {
1105         return 0;
1106 }
1107
1108 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
1109 {
1110         return 0;
1111 }
1112
1113 static inline int security_shm_shmat(struct shmid_kernel *shp,
1114                                      char __user *shmaddr, int shmflg)
1115 {
1116         return 0;
1117 }
1118
1119 static inline int security_sem_alloc(struct sem_array *sma)
1120 {
1121         return 0;
1122 }
1123
1124 static inline void security_sem_free(struct sem_array *sma)
1125 { }
1126
1127 static inline int security_sem_associate(struct sem_array *sma, int semflg)
1128 {
1129         return 0;
1130 }
1131
1132 static inline int security_sem_semctl(struct sem_array *sma, int cmd)
1133 {
1134         return 0;
1135 }
1136
1137 static inline int security_sem_semop(struct sem_array *sma,
1138                                      struct sembuf *sops, unsigned nsops,
1139                                      int alter)
1140 {
1141         return 0;
1142 }
1143
1144 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1145 { }
1146
1147 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
1148 {
1149         return -EINVAL;
1150 }
1151
1152 static inline int security_setprocattr(char *name, void *value, size_t size)
1153 {
1154         return -EINVAL;
1155 }
1156
1157 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1158 {
1159         return 0;
1160 }
1161
1162 static inline int security_ismaclabel(const char *name)
1163 {
1164         return 0;
1165 }
1166
1167 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1168 {
1169         return -EOPNOTSUPP;
1170 }
1171
1172 static inline int security_secctx_to_secid(const char *secdata,
1173                                            u32 seclen,
1174                                            u32 *secid)
1175 {
1176         return -EOPNOTSUPP;
1177 }
1178
1179 static inline void security_release_secctx(char *secdata, u32 seclen)
1180 {
1181 }
1182
1183 static inline void security_inode_invalidate_secctx(struct inode *inode)
1184 {
1185 }
1186
1187 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1188 {
1189         return -EOPNOTSUPP;
1190 }
1191 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1192 {
1193         return -EOPNOTSUPP;
1194 }
1195 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1196 {
1197         return -EOPNOTSUPP;
1198 }
1199 #endif  /* CONFIG_SECURITY */
1200
1201 #ifdef CONFIG_SECURITY_NETWORK
1202
1203 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
1204 int security_unix_may_send(struct socket *sock,  struct socket *other);
1205 int security_socket_create(int family, int type, int protocol, int kern);
1206 int security_socket_post_create(struct socket *sock, int family,
1207                                 int type, int protocol, int kern);
1208 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
1209 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
1210 int security_socket_listen(struct socket *sock, int backlog);
1211 int security_socket_accept(struct socket *sock, struct socket *newsock);
1212 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
1213 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1214                             int size, int flags);
1215 int security_socket_getsockname(struct socket *sock);
1216 int security_socket_getpeername(struct socket *sock);
1217 int security_socket_getsockopt(struct socket *sock, int level, int optname);
1218 int security_socket_setsockopt(struct socket *sock, int level, int optname);
1219 int security_socket_shutdown(struct socket *sock, int how);
1220 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
1221 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1222                                       int __user *optlen, unsigned len);
1223 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
1224 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
1225 void security_sk_free(struct sock *sk);
1226 void security_sk_clone(const struct sock *sk, struct sock *newsk);
1227 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
1228 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
1229 void security_sock_graft(struct sock*sk, struct socket *parent);
1230 int security_inet_conn_request(struct sock *sk,
1231                         struct sk_buff *skb, struct request_sock *req);
1232 void security_inet_csk_clone(struct sock *newsk,
1233                         const struct request_sock *req);
1234 void security_inet_conn_established(struct sock *sk,
1235                         struct sk_buff *skb);
1236 int security_secmark_relabel_packet(u32 secid);
1237 void security_secmark_refcount_inc(void);
1238 void security_secmark_refcount_dec(void);
1239 int security_tun_dev_alloc_security(void **security);
1240 void security_tun_dev_free_security(void *security);
1241 int security_tun_dev_create(void);
1242 int security_tun_dev_attach_queue(void *security);
1243 int security_tun_dev_attach(struct sock *sk, void *security);
1244 int security_tun_dev_open(void *security);
1245
1246 #else   /* CONFIG_SECURITY_NETWORK */
1247 static inline int security_unix_stream_connect(struct sock *sock,
1248                                                struct sock *other,
1249                                                struct sock *newsk)
1250 {
1251         return 0;
1252 }
1253
1254 static inline int security_unix_may_send(struct socket *sock,
1255                                          struct socket *other)
1256 {
1257         return 0;
1258 }
1259
1260 static inline int security_socket_create(int family, int type,
1261                                          int protocol, int kern)
1262 {
1263         return 0;
1264 }
1265
1266 static inline int security_socket_post_create(struct socket *sock,
1267                                               int family,
1268                                               int type,
1269                                               int protocol, int kern)
1270 {
1271         return 0;
1272 }
1273
1274 static inline int security_socket_bind(struct socket *sock,
1275                                        struct sockaddr *address,
1276                                        int addrlen)
1277 {
1278         return 0;
1279 }
1280
1281 static inline int security_socket_connect(struct socket *sock,
1282                                           struct sockaddr *address,
1283                                           int addrlen)
1284 {
1285         return 0;
1286 }
1287
1288 static inline int security_socket_listen(struct socket *sock, int backlog)
1289 {
1290         return 0;
1291 }
1292
1293 static inline int security_socket_accept(struct socket *sock,
1294                                          struct socket *newsock)
1295 {
1296         return 0;
1297 }
1298
1299 static inline int security_socket_sendmsg(struct socket *sock,
1300                                           struct msghdr *msg, int size)
1301 {
1302         return 0;
1303 }
1304
1305 static inline int security_socket_recvmsg(struct socket *sock,
1306                                           struct msghdr *msg, int size,
1307                                           int flags)
1308 {
1309         return 0;
1310 }
1311
1312 static inline int security_socket_getsockname(struct socket *sock)
1313 {
1314         return 0;
1315 }
1316
1317 static inline int security_socket_getpeername(struct socket *sock)
1318 {
1319         return 0;
1320 }
1321
1322 static inline int security_socket_getsockopt(struct socket *sock,
1323                                              int level, int optname)
1324 {
1325         return 0;
1326 }
1327
1328 static inline int security_socket_setsockopt(struct socket *sock,
1329                                              int level, int optname)
1330 {
1331         return 0;
1332 }
1333
1334 static inline int security_socket_shutdown(struct socket *sock, int how)
1335 {
1336         return 0;
1337 }
1338 static inline int security_sock_rcv_skb(struct sock *sk,
1339                                         struct sk_buff *skb)
1340 {
1341         return 0;
1342 }
1343
1344 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1345                                                     int __user *optlen, unsigned len)
1346 {
1347         return -ENOPROTOOPT;
1348 }
1349
1350 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1351 {
1352         return -ENOPROTOOPT;
1353 }
1354
1355 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1356 {
1357         return 0;
1358 }
1359
1360 static inline void security_sk_free(struct sock *sk)
1361 {
1362 }
1363
1364 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
1365 {
1366 }
1367
1368 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1369 {
1370 }
1371
1372 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1373 {
1374 }
1375
1376 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
1377 {
1378 }
1379
1380 static inline int security_inet_conn_request(struct sock *sk,
1381                         struct sk_buff *skb, struct request_sock *req)
1382 {
1383         return 0;
1384 }
1385
1386 static inline void security_inet_csk_clone(struct sock *newsk,
1387                         const struct request_sock *req)
1388 {
1389 }
1390
1391 static inline void security_inet_conn_established(struct sock *sk,
1392                         struct sk_buff *skb)
1393 {
1394 }
1395
1396 static inline int security_secmark_relabel_packet(u32 secid)
1397 {
1398         return 0;
1399 }
1400
1401 static inline void security_secmark_refcount_inc(void)
1402 {
1403 }
1404
1405 static inline void security_secmark_refcount_dec(void)
1406 {
1407 }
1408
1409 static inline int security_tun_dev_alloc_security(void **security)
1410 {
1411         return 0;
1412 }
1413
1414 static inline void security_tun_dev_free_security(void *security)
1415 {
1416 }
1417
1418 static inline int security_tun_dev_create(void)
1419 {
1420         return 0;
1421 }
1422
1423 static inline int security_tun_dev_attach_queue(void *security)
1424 {
1425         return 0;
1426 }
1427
1428 static inline int security_tun_dev_attach(struct sock *sk, void *security)
1429 {
1430         return 0;
1431 }
1432
1433 static inline int security_tun_dev_open(void *security)
1434 {
1435         return 0;
1436 }
1437 #endif  /* CONFIG_SECURITY_NETWORK */
1438
1439 #ifdef CONFIG_SECURITY_INFINIBAND
1440 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey);
1441 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num);
1442 int security_ib_alloc_security(void **sec);
1443 void security_ib_free_security(void *sec);
1444 #else   /* CONFIG_SECURITY_INFINIBAND */
1445 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
1446 {
1447         return 0;
1448 }
1449
1450 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
1451 {
1452         return 0;
1453 }
1454
1455 static inline int security_ib_alloc_security(void **sec)
1456 {
1457         return 0;
1458 }
1459
1460 static inline void security_ib_free_security(void *sec)
1461 {
1462 }
1463 #endif  /* CONFIG_SECURITY_INFINIBAND */
1464
1465 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1466
1467 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1468                                struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
1469 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
1470 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
1471 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
1472 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
1473 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1474                                       struct xfrm_sec_ctx *polsec, u32 secid);
1475 int security_xfrm_state_delete(struct xfrm_state *x);
1476 void security_xfrm_state_free(struct xfrm_state *x);
1477 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1478 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1479                                        struct xfrm_policy *xp,
1480                                        const struct flowi *fl);
1481 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
1482 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
1483
1484 #else   /* CONFIG_SECURITY_NETWORK_XFRM */
1485
1486 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1487                                              struct xfrm_user_sec_ctx *sec_ctx,
1488                                              gfp_t gfp)
1489 {
1490         return 0;
1491 }
1492
1493 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
1494 {
1495         return 0;
1496 }
1497
1498 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1499 {
1500 }
1501
1502 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1503 {
1504         return 0;
1505 }
1506
1507 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
1508                                         struct xfrm_user_sec_ctx *sec_ctx)
1509 {
1510         return 0;
1511 }
1512
1513 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1514                                         struct xfrm_sec_ctx *polsec, u32 secid)
1515 {
1516         return 0;
1517 }
1518
1519 static inline void security_xfrm_state_free(struct xfrm_state *x)
1520 {
1521 }
1522
1523 static inline int security_xfrm_state_delete(struct xfrm_state *x)
1524 {
1525         return 0;
1526 }
1527
1528 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1529 {
1530         return 0;
1531 }
1532
1533 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1534                         struct xfrm_policy *xp, const struct flowi *fl)
1535 {
1536         return 1;
1537 }
1538
1539 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1540 {
1541         return 0;
1542 }
1543
1544 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1545 {
1546 }
1547
1548 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1549
1550 #ifdef CONFIG_SECURITY_PATH
1551 int security_path_unlink(const struct path *dir, struct dentry *dentry);
1552 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode);
1553 int security_path_rmdir(const struct path *dir, struct dentry *dentry);
1554 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
1555                         unsigned int dev);
1556 int security_path_truncate(const struct path *path);
1557 int security_path_symlink(const struct path *dir, struct dentry *dentry,
1558                           const char *old_name);
1559 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
1560                        struct dentry *new_dentry);
1561 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
1562                          const struct path *new_dir, struct dentry *new_dentry,
1563                          unsigned int flags);
1564 int security_path_chmod(const struct path *path, umode_t mode);
1565 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid);
1566 int security_path_chroot(const struct path *path);
1567 #else   /* CONFIG_SECURITY_PATH */
1568 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry)
1569 {
1570         return 0;
1571 }
1572
1573 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry,
1574                                       umode_t mode)
1575 {
1576         return 0;
1577 }
1578
1579 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry)
1580 {
1581         return 0;
1582 }
1583
1584 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry,
1585                                       umode_t mode, unsigned int dev)
1586 {
1587         return 0;
1588 }
1589
1590 static inline int security_path_truncate(const struct path *path)
1591 {
1592         return 0;
1593 }
1594
1595 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry,
1596                                         const char *old_name)
1597 {
1598         return 0;
1599 }
1600
1601 static inline int security_path_link(struct dentry *old_dentry,
1602                                      const struct path *new_dir,
1603                                      struct dentry *new_dentry)
1604 {
1605         return 0;
1606 }
1607
1608 static inline int security_path_rename(const struct path *old_dir,
1609                                        struct dentry *old_dentry,
1610                                        const struct path *new_dir,
1611                                        struct dentry *new_dentry,
1612                                        unsigned int flags)
1613 {
1614         return 0;
1615 }
1616
1617 static inline int security_path_chmod(const struct path *path, umode_t mode)
1618 {
1619         return 0;
1620 }
1621
1622 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
1623 {
1624         return 0;
1625 }
1626
1627 static inline int security_path_chroot(const struct path *path)
1628 {
1629         return 0;
1630 }
1631 #endif  /* CONFIG_SECURITY_PATH */
1632
1633 #ifdef CONFIG_KEYS
1634 #ifdef CONFIG_SECURITY
1635
1636 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
1637 void security_key_free(struct key *key);
1638 int security_key_permission(key_ref_t key_ref,
1639                             const struct cred *cred, unsigned perm);
1640 int security_key_getsecurity(struct key *key, char **_buffer);
1641
1642 #else
1643
1644 static inline int security_key_alloc(struct key *key,
1645                                      const struct cred *cred,
1646                                      unsigned long flags)
1647 {
1648         return 0;
1649 }
1650
1651 static inline void security_key_free(struct key *key)
1652 {
1653 }
1654
1655 static inline int security_key_permission(key_ref_t key_ref,
1656                                           const struct cred *cred,
1657                                           unsigned perm)
1658 {
1659         return 0;
1660 }
1661
1662 static inline int security_key_getsecurity(struct key *key, char **_buffer)
1663 {
1664         *_buffer = NULL;
1665         return 0;
1666 }
1667
1668 #endif
1669 #endif /* CONFIG_KEYS */
1670
1671 #ifdef CONFIG_AUDIT
1672 #ifdef CONFIG_SECURITY
1673 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
1674 int security_audit_rule_known(struct audit_krule *krule);
1675 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1676                               struct audit_context *actx);
1677 void security_audit_rule_free(void *lsmrule);
1678
1679 #else
1680
1681 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
1682                                            void **lsmrule)
1683 {
1684         return 0;
1685 }
1686
1687 static inline int security_audit_rule_known(struct audit_krule *krule)
1688 {
1689         return 0;
1690 }
1691
1692 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
1693                                    void *lsmrule, struct audit_context *actx)
1694 {
1695         return 0;
1696 }
1697
1698 static inline void security_audit_rule_free(void *lsmrule)
1699 { }
1700
1701 #endif /* CONFIG_SECURITY */
1702 #endif /* CONFIG_AUDIT */
1703
1704 #ifdef CONFIG_SECURITYFS
1705
1706 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
1707                                              struct dentry *parent, void *data,
1708                                              const struct file_operations *fops);
1709 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
1710 struct dentry *securityfs_create_symlink(const char *name,
1711                                          struct dentry *parent,
1712                                          const char *target,
1713                                          const struct inode_operations *iops);
1714 extern void securityfs_remove(struct dentry *dentry);
1715
1716 #else /* CONFIG_SECURITYFS */
1717
1718 static inline struct dentry *securityfs_create_dir(const char *name,
1719                                                    struct dentry *parent)
1720 {
1721         return ERR_PTR(-ENODEV);
1722 }
1723
1724 static inline struct dentry *securityfs_create_file(const char *name,
1725                                                     umode_t mode,
1726                                                     struct dentry *parent,
1727                                                     void *data,
1728                                                     const struct file_operations *fops)
1729 {
1730         return ERR_PTR(-ENODEV);
1731 }
1732
1733 static inline struct dentry *securityfs_create_symlink(const char *name,
1734                                         struct dentry *parent,
1735                                         const char *target,
1736                                         const struct inode_operations *iops)
1737 {
1738         return ERR_PTR(-ENODEV);
1739 }
1740
1741 static inline void securityfs_remove(struct dentry *dentry)
1742 {}
1743
1744 #endif
1745
1746 #ifdef CONFIG_SECURITY
1747
1748 static inline char *alloc_secdata(void)
1749 {
1750         return (char *)get_zeroed_page(GFP_KERNEL);
1751 }
1752
1753 static inline void free_secdata(void *secdata)
1754 {
1755         free_page((unsigned long)secdata);
1756 }
1757
1758 #else
1759
1760 static inline char *alloc_secdata(void)
1761 {
1762         return (char *)1;
1763 }
1764
1765 static inline void free_secdata(void *secdata)
1766 { }
1767 #endif /* CONFIG_SECURITY */
1768
1769 #ifdef CONFIG_LOCK_DOWN_KERNEL
1770 extern void lock_kernel_down(void);
1771 #ifdef CONFIG_ALLOW_LOCKDOWN_LIFT
1772 extern void lift_kernel_lockdown(void);
1773 #endif
1774 #else
1775 static inline void lock_kernel_down(void)
1776 {
1777 }
1778 #endif
1779
1780 #endif /* ! __LINUX_SECURITY_H */
1781