include/linux/security.h

   1 /*
   2  * Linux Security plug
   3  *
   4  * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
   5  * Copyright (C) 2001 Greg Kroah-Hartman <greg@kroah.com>
   6  * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
   7  * Copyright (C) 2001 James Morris <jmorris@intercode.com.au>
   8  * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group)
   9  * Copyright (C) 2016 Mellanox Techonologies
  10  *
  11  *      This program is free software; you can redistribute it and/or modify
  12  *      it under the terms of the GNU General Public License as published by
  13  *      the Free Software Foundation; either version 2 of the License, or
  14  *      (at your option) any later version.
  15  *
  16  *      Due to this file being licensed under the GPL there is controversy over
  17  *      whether this permits you to write a module that #includes this file
  18  *      without placing your module under the GPL.  Please consult a lawyer for
  19  *      advice before doing this.
  20  *
  21  */
  22
  23 #ifndef __LINUX_SECURITY_H
  24 #define __LINUX_SECURITY_H
  25
  26 #include <linux/key.h>
  27 #include <linux/capability.h>
  28 #include <linux/fs.h>
  29 #include <linux/slab.h>
  30 #include <linux/err.h>
  31 #include <linux/string.h>
  32 #include <linux/mm.h>
  33 #include <linux/fs.h>
  34
  35 struct linux_binprm;
  36 struct cred;
  37 struct rlimit;
  38 struct siginfo;
  39 struct sem_array;
  40 struct sembuf;
  41 struct kern_ipc_perm;
  42 struct audit_context;
  43 struct super_block;
  44 struct inode;
  45 struct dentry;
  46 struct file;
  47 struct vfsmount;
  48 struct path;
  49 struct qstr;
  50 struct iattr;
  51 struct fown_struct;
  52 struct file_operations;
  53 struct shmid_kernel;
  54 struct msg_msg;
  55 struct msg_queue;
  56 struct xattr;
  57 struct xfrm_sec_ctx;
  58 struct mm_struct;
  59
  60 /* If capable should audit the security request */
  61 #define SECURITY_CAP_NOAUDIT 0
  62 #define SECURITY_CAP_AUDIT 1
  63
  64 /* LSM Agnostic defines for sb_set_mnt_opts */
  65 #define SECURITY_LSM_NATIVE_LABELS      1
  66
  67 struct ctl_table;
  68 struct audit_krule;
  69 struct user_namespace;
  70 struct timezone;
  71
  72 enum lsm_event {
  73         LSM_POLICY_CHANGE,
  74 };
  75
  76 /* These functions are in security/commoncap.c */
  77 extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
  78                        int cap, int audit);
  79 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz);
  80 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
  81 extern int cap_ptrace_traceme(struct task_struct *parent);
  82 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
  83 extern int cap_capset(struct cred *new, const struct cred *old,
  84                       const kernel_cap_t *effective,
  85                       const kernel_cap_t *inheritable,
  86                       const kernel_cap_t *permitted);
  87 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
  88 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
  89                               const void *value, size_t size, int flags);
  90 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
  91 extern int cap_inode_need_killpriv(struct dentry *dentry);
  92 extern int cap_inode_killpriv(struct dentry *dentry);
  93 extern int cap_inode_getsecurity(struct inode *inode, const char *name,
  94                                  void **buffer, bool alloc);
  95 extern int cap_mmap_addr(unsigned long addr);
  96 extern int cap_mmap_file(struct file *file, unsigned long reqprot,
  97                          unsigned long prot, unsigned long flags);
  98 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
  99 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 100                           unsigned long arg4, unsigned long arg5);
 101 extern int cap_task_setscheduler(struct task_struct *p);
 102 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
 103 extern int cap_task_setnice(struct task_struct *p, int nice);
 104 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
 105
 106 struct msghdr;
 107 struct sk_buff;
 108 struct sock;
 109 struct sockaddr;
 110 struct socket;
 111 struct flowi;
 112 struct dst_entry;
 113 struct xfrm_selector;
 114 struct xfrm_policy;
 115 struct xfrm_state;
 116 struct xfrm_user_sec_ctx;
 117 struct seq_file;
 118
 119 #ifdef CONFIG_MMU
 120 extern unsigned long mmap_min_addr;
 121 extern unsigned long dac_mmap_min_addr;
 122 #else
 123 #define mmap_min_addr           0UL
 124 #define dac_mmap_min_addr       0UL
 125 #endif
 126
 127 /*
 128  * Values used in the task_security_ops calls
 129  */
 130 /* setuid or setgid, id0 == uid or gid */
 131 #define LSM_SETID_ID    1
 132
 133 /* setreuid or setregid, id0 == real, id1 == eff */
 134 #define LSM_SETID_RE    2
 135
 136 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
 137 #define LSM_SETID_RES   4
 138
 139 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
 140 #define LSM_SETID_FS    8
 141
 142 /* Flags for security_task_prlimit(). */
 143 #define LSM_PRLIMIT_READ  1
 144 #define LSM_PRLIMIT_WRITE 2
 145
 146 /* forward declares to avoid warnings */
 147 struct sched_param;
 148 struct request_sock;
 149
 150 /* bprm->unsafe reasons */
 151 #define LSM_UNSAFE_SHARE        1
 152 #define LSM_UNSAFE_PTRACE       2
 153 #define LSM_UNSAFE_NO_NEW_PRIVS 4
 154
 155 #ifdef CONFIG_MMU
 156 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
 157                                  void __user *buffer, size_t *lenp, loff_t *ppos);
 158 #endif
 159
 160 /* security_inode_init_security callback function to write xattrs */
 161 typedef int (*initxattrs) (struct inode *inode,
 162                            const struct xattr *xattr_array, void *fs_data);
 163
 164 #ifdef CONFIG_SECURITY
 165
 166 struct security_mnt_opts {
 167         char **mnt_opts;
 168         int *mnt_opts_flags;
 169         int num_mnt_opts;
 170 };
 171
 172 int call_lsm_notifier(enum lsm_event event, void *data);
 173 int register_lsm_notifier(struct notifier_block *nb);
 174 int unregister_lsm_notifier(struct notifier_block *nb);
 175
 176 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
 177 {
 178         opts->mnt_opts = NULL;
 179         opts->mnt_opts_flags = NULL;
 180         opts->num_mnt_opts = 0;
 181 }
 182
 183 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
 184 {
 185         int i;
 186         if (opts->mnt_opts)
 187                 for (i = 0; i < opts->num_mnt_opts; i++)
 188                         kfree(opts->mnt_opts[i]);
 189         kfree(opts->mnt_opts);
 190         opts->mnt_opts = NULL;
 191         kfree(opts->mnt_opts_flags);
 192         opts->mnt_opts_flags = NULL;
 193         opts->num_mnt_opts = 0;
 194 }
 195
 196 /* prototypes */
 197 extern int security_init(void);
 198
 199 /* Security operations */
 200 int security_binder_set_context_mgr(struct task_struct *mgr);
 201 int security_binder_transaction(struct task_struct *from,
 202                                 struct task_struct *to);
 203 int security_binder_transfer_binder(struct task_struct *from,
 204                                     struct task_struct *to);
 205 int security_binder_transfer_file(struct task_struct *from,
 206                                   struct task_struct *to, struct file *file);
 207 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
 208 int security_ptrace_traceme(struct task_struct *parent);
 209 int security_capget(struct task_struct *target,
 210                     kernel_cap_t *effective,
 211                     kernel_cap_t *inheritable,
 212                     kernel_cap_t *permitted);
 213 int security_capset(struct cred *new, const struct cred *old,
 214                     const kernel_cap_t *effective,
 215                     const kernel_cap_t *inheritable,
 216                     const kernel_cap_t *permitted);
 217 int security_capable(const struct cred *cred, struct user_namespace *ns,
 218                         int cap);
 219 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
 220                              int cap);
 221 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
 222 int security_quota_on(struct dentry *dentry);
 223 int security_syslog(int type);
 224 int security_settime64(const struct timespec64 *ts, const struct timezone *tz);
 225 static inline int security_settime(const struct timespec *ts, const struct timezone *tz)
 226 {
 227         struct timespec64 ts64 = timespec_to_timespec64(*ts);
 228
 229         return security_settime64(&ts64, tz);
 230 }
 231 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
 232 int security_bprm_set_creds(struct linux_binprm *bprm);
 233 int security_bprm_check(struct linux_binprm *bprm);
 234 void security_bprm_committing_creds(struct linux_binprm *bprm);
 235 void security_bprm_committed_creds(struct linux_binprm *bprm);
 236 int security_sb_alloc(struct super_block *sb);
 237 void security_sb_free(struct super_block *sb);
 238 int security_sb_copy_data(char *orig, char *copy);
 239 int security_sb_remount(struct super_block *sb, void *data);
 240 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
 241 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
 242 int security_sb_statfs(struct dentry *dentry);
 243 int security_sb_mount(const char *dev_name, const struct path *path,
 244                       const char *type, unsigned long flags, void *data);
 245 int security_sb_umount(struct vfsmount *mnt, int flags);
 246 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path);
 247 int security_sb_set_mnt_opts(struct super_block *sb,
 248                                 struct security_mnt_opts *opts,
 249                                 unsigned long kern_flags,
 250                                 unsigned long *set_kern_flags);
 251 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 252                                 struct super_block *newsb,
 253                                 unsigned long kern_flags,
 254                                 unsigned long *set_kern_flags);
 255 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
 256 int security_dentry_init_security(struct dentry *dentry, int mode,
 257                                         const struct qstr *name, void **ctx,
 258                                         u32 *ctxlen);
 259 int security_dentry_create_files_as(struct dentry *dentry, int mode,
 260                                         struct qstr *name,
 261                                         const struct cred *old,
 262                                         struct cred *new);
 263
 264 int security_inode_alloc(struct inode *inode);
 265 void security_inode_free(struct inode *inode);
 266 int security_inode_init_security(struct inode *inode, struct inode *dir,
 267                                  const struct qstr *qstr,
 268                                  initxattrs initxattrs, void *fs_data);
 269 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
 270                                      const struct qstr *qstr, const char **name,
 271                                      void **value, size_t *len);
 272 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
 273 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 274                          struct dentry *new_dentry);
 275 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
 276 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 277                            const char *old_name);
 278 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
 279 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
 280 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
 281 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 282                           struct inode *new_dir, struct dentry *new_dentry,
 283                           unsigned int flags);
 284 int security_inode_readlink(struct dentry *dentry);
 285 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
 286                                bool rcu);
 287 int security_inode_permission(struct inode *inode, int mask);
 288 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
 289 int security_inode_getattr(const struct path *path);
 290 int security_inode_setxattr(struct dentry *dentry, const char *name,
 291                             const void *value, size_t size, int flags);
 292 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 293                                   const void *value, size_t size, int flags);
 294 int security_inode_getxattr(struct dentry *dentry, const char *name);
 295 int security_inode_listxattr(struct dentry *dentry);
 296 int security_inode_removexattr(struct dentry *dentry, const char *name);
 297 int security_inode_need_killpriv(struct dentry *dentry);
 298 int security_inode_killpriv(struct dentry *dentry);
 299 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc);
 300 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
 301 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
 302 void security_inode_getsecid(struct inode *inode, u32 *secid);
 303 int security_inode_copy_up(struct dentry *src, struct cred **new);
 304 int security_inode_copy_up_xattr(const char *name);
 305 int security_file_permission(struct file *file, int mask);
 306 int security_file_alloc(struct file *file);
 307 void security_file_free(struct file *file);
 308 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
 309 int security_mmap_file(struct file *file, unsigned long prot,
 310                         unsigned long flags);
 311 int security_mmap_addr(unsigned long addr);
 312 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 313                            unsigned long prot);
 314 int security_file_lock(struct file *file, unsigned int cmd);
 315 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
 316 void security_file_set_fowner(struct file *file);
 317 int security_file_send_sigiotask(struct task_struct *tsk,
 318                                  struct fown_struct *fown, int sig);
 319 int security_file_receive(struct file *file);
 320 int security_file_open(struct file *file, const struct cred *cred);
 321 int security_task_alloc(struct task_struct *task, unsigned long clone_flags);
 322 void security_task_free(struct task_struct *task);
 323 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
 324 void security_cred_free(struct cred *cred);
 325 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
 326 void security_transfer_creds(struct cred *new, const struct cred *old);
 327 int security_kernel_act_as(struct cred *new, u32 secid);
 328 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
 329 int security_kernel_module_request(char *kmod_name);
 330 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id);
 331 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
 332                                    enum kernel_read_file_id id);
 333 int security_task_fix_setuid(struct cred *new, const struct cred *old,
 334                              int flags);
 335 int security_task_setpgid(struct task_struct *p, pid_t pgid);
 336 int security_task_getpgid(struct task_struct *p);
 337 int security_task_getsid(struct task_struct *p);
 338 void security_task_getsecid(struct task_struct *p, u32 *secid);
 339 int security_task_setnice(struct task_struct *p, int nice);
 340 int security_task_setioprio(struct task_struct *p, int ioprio);
 341 int security_task_getioprio(struct task_struct *p);
 342 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
 343                           unsigned int flags);
 344 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
 345                 struct rlimit *new_rlim);
 346 int security_task_setscheduler(struct task_struct *p);
 347 int security_task_getscheduler(struct task_struct *p);
 348 int security_task_movememory(struct task_struct *p);
 349 int security_task_kill(struct task_struct *p, struct siginfo *info,
 350                         int sig, u32 secid);
 351 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 352                         unsigned long arg4, unsigned long arg5);
 353 void security_task_to_inode(struct task_struct *p, struct inode *inode);
 354 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
 355 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
 356 int security_msg_msg_alloc(struct msg_msg *msg);
 357 void security_msg_msg_free(struct msg_msg *msg);
 358 int security_msg_queue_alloc(struct msg_queue *msq);
 359 void security_msg_queue_free(struct msg_queue *msq);
 360 int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
 361 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
 362 int security_msg_queue_msgsnd(struct msg_queue *msq,
 363                               struct msg_msg *msg, int msqflg);
 364 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
 365                               struct task_struct *target, long type, int mode);
 366 int security_shm_alloc(struct shmid_kernel *shp);
 367 void security_shm_free(struct shmid_kernel *shp);
 368 int security_shm_associate(struct shmid_kernel *shp, int shmflg);
 369 int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
 370 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
 371 int security_sem_alloc(struct sem_array *sma);
 372 void security_sem_free(struct sem_array *sma);
 373 int security_sem_associate(struct sem_array *sma, int semflg);
 374 int security_sem_semctl(struct sem_array *sma, int cmd);
 375 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
 376                         unsigned nsops, int alter);
 377 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
 378 int security_getprocattr(struct task_struct *p, char *name, char **value);
 379 int security_setprocattr(const char *name, void *value, size_t size);
 380 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
 381 int security_ismaclabel(const char *name);
 382 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
 383 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
 384 void security_release_secctx(char *secdata, u32 seclen);
 385
 386 void security_inode_invalidate_secctx(struct inode *inode);
 387 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
 388 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
 389 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
 390 #else /* CONFIG_SECURITY */
 391 struct security_mnt_opts {
 392 };
 393
 394 static inline int call_lsm_notifier(enum lsm_event event, void *data)
 395 {
 396         return 0;
 397 }
 398
 399 static inline int register_lsm_notifier(struct notifier_block *nb)
 400 {
 401         return 0;
 402 }
 403
 404 static inline  int unregister_lsm_notifier(struct notifier_block *nb)
 405 {
 406         return 0;
 407 }
 408
 409 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
 410 {
 411 }
 412
 413 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
 414 {
 415 }
 416
 417 /*
 418  * This is the default capabilities functionality.  Most of these functions
 419  * are just stubbed out, but a few must call the proper capable code.
 420  */
 421
 422 static inline int security_init(void)
 423 {
 424         return 0;
 425 }
 426
 427 static inline int security_binder_set_context_mgr(struct task_struct *mgr)
 428 {
 429         return 0;
 430 }
 431
 432 static inline int security_binder_transaction(struct task_struct *from,
 433                                               struct task_struct *to)
 434 {
 435         return 0;
 436 }
 437
 438 static inline int security_binder_transfer_binder(struct task_struct *from,
 439                                                   struct task_struct *to)
 440 {
 441         return 0;
 442 }
 443
 444 static inline int security_binder_transfer_file(struct task_struct *from,
 445                                                 struct task_struct *to,
 446                                                 struct file *file)
 447 {
 448         return 0;
 449 }
 450
 451 static inline int security_ptrace_access_check(struct task_struct *child,
 452                                              unsigned int mode)
 453 {
 454         return cap_ptrace_access_check(child, mode);
 455 }
 456
 457 static inline int security_ptrace_traceme(struct task_struct *parent)
 458 {
 459         return cap_ptrace_traceme(parent);
 460 }
 461
 462 static inline int security_capget(struct task_struct *target,
 463                                    kernel_cap_t *effective,
 464                                    kernel_cap_t *inheritable,
 465                                    kernel_cap_t *permitted)
 466 {
 467         return cap_capget(target, effective, inheritable, permitted);
 468 }
 469
 470 static inline int security_capset(struct cred *new,
 471                                    const struct cred *old,
 472                                    const kernel_cap_t *effective,
 473                                    const kernel_cap_t *inheritable,
 474                                    const kernel_cap_t *permitted)
 475 {
 476         return cap_capset(new, old, effective, inheritable, permitted);
 477 }
 478
 479 static inline int security_capable(const struct cred *cred,
 480                                    struct user_namespace *ns, int cap)
 481 {
 482         return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT);
 483 }
 484
 485 static inline int security_capable_noaudit(const struct cred *cred,
 486                                            struct user_namespace *ns, int cap) {
 487         return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
 488 }
 489
 490 static inline int security_quotactl(int cmds, int type, int id,
 491                                      struct super_block *sb)
 492 {
 493         return 0;
 494 }
 495
 496 static inline int security_quota_on(struct dentry *dentry)
 497 {
 498         return 0;
 499 }
 500
 501 static inline int security_syslog(int type)
 502 {
 503         return 0;
 504 }
 505
 506 static inline int security_settime64(const struct timespec64 *ts,
 507                                      const struct timezone *tz)
 508 {
 509         return cap_settime(ts, tz);
 510 }
 511
 512 static inline int security_settime(const struct timespec *ts,
 513                                    const struct timezone *tz)
 514 {
 515         struct timespec64 ts64 = timespec_to_timespec64(*ts);
 516
 517         return cap_settime(&ts64, tz);
 518 }
 519
 520 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 521 {
 522         return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages));
 523 }
 524
 525 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
 526 {
 527         return cap_bprm_set_creds(bprm);
 528 }
 529
 530 static inline int security_bprm_check(struct linux_binprm *bprm)
 531 {
 532         return 0;
 533 }
 534
 535 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
 536 {
 537 }
 538
 539 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
 540 {
 541 }
 542
 543 static inline int security_sb_alloc(struct super_block *sb)
 544 {
 545         return 0;
 546 }
 547
 548 static inline void security_sb_free(struct super_block *sb)
 549 { }
 550
 551 static inline int security_sb_copy_data(char *orig, char *copy)
 552 {
 553         return 0;
 554 }
 555
 556 static inline int security_sb_remount(struct super_block *sb, void *data)
 557 {
 558         return 0;
 559 }
 560
 561 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
 562 {
 563         return 0;
 564 }
 565
 566 static inline int security_sb_show_options(struct seq_file *m,
 567                                            struct super_block *sb)
 568 {
 569         return 0;
 570 }
 571
 572 static inline int security_sb_statfs(struct dentry *dentry)
 573 {
 574         return 0;
 575 }
 576
 577 static inline int security_sb_mount(const char *dev_name, const struct path *path,
 578                                     const char *type, unsigned long flags,
 579                                     void *data)
 580 {
 581         return 0;
 582 }
 583
 584 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
 585 {
 586         return 0;
 587 }
 588
 589 static inline int security_sb_pivotroot(const struct path *old_path,
 590                                         const struct path *new_path)
 591 {
 592         return 0;
 593 }
 594
 595 static inline int security_sb_set_mnt_opts(struct super_block *sb,
 596                                            struct security_mnt_opts *opts,
 597                                            unsigned long kern_flags,
 598                                            unsigned long *set_kern_flags)
 599 {
 600         return 0;
 601 }
 602
 603 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 604                                               struct super_block *newsb,
 605                                               unsigned long kern_flags,
 606                                               unsigned long *set_kern_flags)
 607 {
 608         return 0;
 609 }
 610
 611 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
 612 {
 613         return 0;
 614 }
 615
 616 static inline int security_inode_alloc(struct inode *inode)
 617 {
 618         return 0;
 619 }
 620
 621 static inline void security_inode_free(struct inode *inode)
 622 { }
 623
 624 static inline int security_dentry_init_security(struct dentry *dentry,
 625                                                  int mode,
 626                                                  const struct qstr *name,
 627                                                  void **ctx,
 628                                                  u32 *ctxlen)
 629 {
 630         return -EOPNOTSUPP;
 631 }
 632
 633 static inline int security_dentry_create_files_as(struct dentry *dentry,
 634                                                   int mode, struct qstr *name,
 635                                                   const struct cred *old,
 636                                                   struct cred *new)
 637 {
 638         return 0;
 639 }
 640
 641
 642 static inline int security_inode_init_security(struct inode *inode,
 643                                                 struct inode *dir,
 644                                                 const struct qstr *qstr,
 645                                                 const initxattrs xattrs,
 646                                                 void *fs_data)
 647 {
 648         return 0;
 649 }
 650
 651 static inline int security_old_inode_init_security(struct inode *inode,
 652                                                    struct inode *dir,
 653                                                    const struct qstr *qstr,
 654                                                    const char **name,
 655                                                    void **value, size_t *len)
 656 {
 657         return -EOPNOTSUPP;
 658 }
 659
 660 static inline int security_inode_create(struct inode *dir,
 661                                          struct dentry *dentry,
 662                                          umode_t mode)
 663 {
 664         return 0;
 665 }
 666
 667 static inline int security_inode_link(struct dentry *old_dentry,
 668                                        struct inode *dir,
 669                                        struct dentry *new_dentry)
 670 {
 671         return 0;
 672 }
 673
 674 static inline int security_inode_unlink(struct inode *dir,
 675                                          struct dentry *dentry)
 676 {
 677         return 0;
 678 }
 679
 680 static inline int security_inode_symlink(struct inode *dir,
 681                                           struct dentry *dentry,
 682                                           const char *old_name)
 683 {
 684         return 0;
 685 }
 686
 687 static inline int security_inode_mkdir(struct inode *dir,
 688                                         struct dentry *dentry,
 689                                         int mode)
 690 {
 691         return 0;
 692 }
 693
 694 static inline int security_inode_rmdir(struct inode *dir,
 695                                         struct dentry *dentry)
 696 {
 697         return 0;
 698 }
 699
 700 static inline int security_inode_mknod(struct inode *dir,
 701                                         struct dentry *dentry,
 702                                         int mode, dev_t dev)
 703 {
 704         return 0;
 705 }
 706
 707 static inline int security_inode_rename(struct inode *old_dir,
 708                                          struct dentry *old_dentry,
 709                                          struct inode *new_dir,
 710                                          struct dentry *new_dentry,
 711                                          unsigned int flags)
 712 {
 713         return 0;
 714 }
 715
 716 static inline int security_inode_readlink(struct dentry *dentry)
 717 {
 718         return 0;
 719 }
 720
 721 static inline int security_inode_follow_link(struct dentry *dentry,
 722                                              struct inode *inode,
 723                                              bool rcu)
 724 {
 725         return 0;
 726 }
 727
 728 static inline int security_inode_permission(struct inode *inode, int mask)
 729 {
 730         return 0;
 731 }
 732
 733 static inline int security_inode_setattr(struct dentry *dentry,
 734                                           struct iattr *attr)
 735 {
 736         return 0;
 737 }
 738
 739 static inline int security_inode_getattr(const struct path *path)
 740 {
 741         return 0;
 742 }
 743
 744 static inline int security_inode_setxattr(struct dentry *dentry,
 745                 const char *name, const void *value, size_t size, int flags)
 746 {
 747         return cap_inode_setxattr(dentry, name, value, size, flags);
 748 }
 749
 750 static inline void security_inode_post_setxattr(struct dentry *dentry,
 751                 const char *name, const void *value, size_t size, int flags)
 752 { }
 753
 754 static inline int security_inode_getxattr(struct dentry *dentry,
 755                         const char *name)
 756 {
 757         return 0;
 758 }
 759
 760 static inline int security_inode_listxattr(struct dentry *dentry)
 761 {
 762         return 0;
 763 }
 764
 765 static inline int security_inode_removexattr(struct dentry *dentry,
 766                         const char *name)
 767 {
 768         return cap_inode_removexattr(dentry, name);
 769 }
 770
 771 static inline int security_inode_need_killpriv(struct dentry *dentry)
 772 {
 773         return cap_inode_need_killpriv(dentry);
 774 }
 775
 776 static inline int security_inode_killpriv(struct dentry *dentry)
 777 {
 778         return cap_inode_killpriv(dentry);
 779 }
 780
 781 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
 782 {
 783         return -EOPNOTSUPP;
 784 }
 785
 786 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 787 {
 788         return -EOPNOTSUPP;
 789 }
 790
 791 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 792 {
 793         return 0;
 794 }
 795
 796 static inline void security_inode_getsecid(struct inode *inode, u32 *secid)
 797 {
 798         *secid = 0;
 799 }
 800
 801 static inline int security_inode_copy_up(struct dentry *src, struct cred **new)
 802 {
 803         return 0;
 804 }
 805
 806 static inline int security_inode_copy_up_xattr(const char *name)
 807 {
 808         return -EOPNOTSUPP;
 809 }
 810
 811 static inline int security_file_permission(struct file *file, int mask)
 812 {
 813         return 0;
 814 }
 815
 816 static inline int security_file_alloc(struct file *file)
 817 {
 818         return 0;
 819 }
 820
 821 static inline void security_file_free(struct file *file)
 822 { }
 823
 824 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
 825                                       unsigned long arg)
 826 {
 827         return 0;
 828 }
 829
 830 static inline int security_mmap_file(struct file *file, unsigned long prot,
 831                                      unsigned long flags)
 832 {
 833         return 0;
 834 }
 835
 836 static inline int security_mmap_addr(unsigned long addr)
 837 {
 838         return cap_mmap_addr(addr);
 839 }
 840
 841 static inline int security_file_mprotect(struct vm_area_struct *vma,
 842                                          unsigned long reqprot,
 843                                          unsigned long prot)
 844 {
 845         return 0;
 846 }
 847
 848 static inline int security_file_lock(struct file *file, unsigned int cmd)
 849 {
 850         return 0;
 851 }
 852
 853 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
 854                                       unsigned long arg)
 855 {
 856         return 0;
 857 }
 858
 859 static inline void security_file_set_fowner(struct file *file)
 860 {
 861         return;
 862 }
 863
 864 static inline int security_file_send_sigiotask(struct task_struct *tsk,
 865                                                struct fown_struct *fown,
 866                                                int sig)
 867 {
 868         return 0;
 869 }
 870
 871 static inline int security_file_receive(struct file *file)
 872 {
 873         return 0;
 874 }
 875
 876 static inline int security_file_open(struct file *file,
 877                                      const struct cred *cred)
 878 {
 879         return 0;
 880 }
 881
 882 static inline int security_task_alloc(struct task_struct *task,
 883                                       unsigned long clone_flags)
 884 {
 885         return 0;
 886 }
 887
 888 static inline void security_task_free(struct task_struct *task)
 889 { }
 890
 891 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 892 {
 893         return 0;
 894 }
 895
 896 static inline void security_cred_free(struct cred *cred)
 897 { }
 898
 899 static inline int security_prepare_creds(struct cred *new,
 900                                          const struct cred *old,
 901                                          gfp_t gfp)
 902 {
 903         return 0;
 904 }
 905
 906 static inline void security_transfer_creds(struct cred *new,
 907                                            const struct cred *old)
 908 {
 909 }
 910
 911 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
 912 {
 913         return 0;
 914 }
 915
 916 static inline int security_kernel_create_files_as(struct cred *cred,
 917                                                   struct inode *inode)
 918 {
 919         return 0;
 920 }
 921
 922 static inline int security_kernel_module_request(char *kmod_name)
 923 {
 924         return 0;
 925 }
 926
 927 static inline int security_kernel_read_file(struct file *file,
 928                                             enum kernel_read_file_id id)
 929 {
 930         return 0;
 931 }
 932
 933 static inline int security_kernel_post_read_file(struct file *file,
 934                                                  char *buf, loff_t size,
 935                                                  enum kernel_read_file_id id)
 936 {
 937         return 0;
 938 }
 939
 940 static inline int security_task_fix_setuid(struct cred *new,
 941                                            const struct cred *old,
 942                                            int flags)
 943 {
 944         return cap_task_fix_setuid(new, old, flags);
 945 }
 946
 947 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
 948 {
 949         return 0;
 950 }
 951
 952 static inline int security_task_getpgid(struct task_struct *p)
 953 {
 954         return 0;
 955 }
 956
 957 static inline int security_task_getsid(struct task_struct *p)
 958 {
 959         return 0;
 960 }
 961
 962 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
 963 {
 964         *secid = 0;
 965 }
 966
 967 static inline int security_task_setnice(struct task_struct *p, int nice)
 968 {
 969         return cap_task_setnice(p, nice);
 970 }
 971
 972 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
 973 {
 974         return cap_task_setioprio(p, ioprio);
 975 }
 976
 977 static inline int security_task_getioprio(struct task_struct *p)
 978 {
 979         return 0;
 980 }
 981
 982 static inline int security_task_prlimit(const struct cred *cred,
 983                                         const struct cred *tcred,
 984                                         unsigned int flags)
 985 {
 986         return 0;
 987 }
 988
 989 static inline int security_task_setrlimit(struct task_struct *p,
 990                                           unsigned int resource,
 991                                           struct rlimit *new_rlim)
 992 {
 993         return 0;
 994 }
 995
 996 static inline int security_task_setscheduler(struct task_struct *p)
 997 {
 998         return cap_task_setscheduler(p);
 999 }
1000
1001 static inline int security_task_getscheduler(struct task_struct *p)
1002 {
1003         return 0;
1004 }
1005
1006 static inline int security_task_movememory(struct task_struct *p)
1007 {
1008         return 0;
1009 }
1010
1011 static inline int security_task_kill(struct task_struct *p,
1012                                      struct siginfo *info, int sig,
1013                                      u32 secid)
1014 {
1015         return 0;
1016 }
1017
1018 static inline int security_task_prctl(int option, unsigned long arg2,
1019                                       unsigned long arg3,
1020                                       unsigned long arg4,
1021                                       unsigned long arg5)
1022 {
1023         return cap_task_prctl(option, arg2, arg3, arg4, arg5);
1024 }
1025
1026 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
1027 { }
1028
1029 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
1030                                           short flag)
1031 {
1032         return 0;
1033 }
1034
1035 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1036 {
1037         *secid = 0;
1038 }
1039
1040 static inline int security_msg_msg_alloc(struct msg_msg *msg)
1041 {
1042         return 0;
1043 }
1044
1045 static inline void security_msg_msg_free(struct msg_msg *msg)
1046 { }
1047
1048 static inline int security_msg_queue_alloc(struct msg_queue *msq)
1049 {
1050         return 0;
1051 }
1052
1053 static inline void security_msg_queue_free(struct msg_queue *msq)
1054 { }
1055
1056 static inline int security_msg_queue_associate(struct msg_queue *msq,
1057                                                int msqflg)
1058 {
1059         return 0;
1060 }
1061
1062 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
1063 {
1064         return 0;
1065 }
1066
1067 static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
1068                                             struct msg_msg *msg, int msqflg)
1069 {
1070         return 0;
1071 }
1072
1073 static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
1074                                             struct msg_msg *msg,
1075                                             struct task_struct *target,
1076                                             long type, int mode)
1077 {
1078         return 0;
1079 }
1080
1081 static inline int security_shm_alloc(struct shmid_kernel *shp)
1082 {
1083         return 0;
1084 }
1085
1086 static inline void security_shm_free(struct shmid_kernel *shp)
1087 { }
1088
1089 static inline int security_shm_associate(struct shmid_kernel *shp,
1090                                          int shmflg)
1091 {
1092         return 0;
1093 }
1094
1095 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
1096 {
1097         return 0;
1098 }
1099
1100 static inline int security_shm_shmat(struct shmid_kernel *shp,
1101                                      char __user *shmaddr, int shmflg)
1102 {
1103         return 0;
1104 }
1105
1106 static inline int security_sem_alloc(struct sem_array *sma)
1107 {
1108         return 0;
1109 }
1110
1111 static inline void security_sem_free(struct sem_array *sma)
1112 { }
1113
1114 static inline int security_sem_associate(struct sem_array *sma, int semflg)
1115 {
1116         return 0;
1117 }
1118
1119 static inline int security_sem_semctl(struct sem_array *sma, int cmd)
1120 {
1121         return 0;
1122 }
1123
1124 static inline int security_sem_semop(struct sem_array *sma,
1125                                      struct sembuf *sops, unsigned nsops,
1126                                      int alter)
1127 {
1128         return 0;
1129 }
1130
1131 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1132 { }
1133
1134 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
1135 {
1136         return -EINVAL;
1137 }
1138
1139 static inline int security_setprocattr(char *name, void *value, size_t size)
1140 {
1141         return -EINVAL;
1142 }
1143
1144 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1145 {
1146         return 0;
1147 }
1148
1149 static inline int security_ismaclabel(const char *name)
1150 {
1151         return 0;
1152 }
1153
1154 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1155 {
1156         return -EOPNOTSUPP;
1157 }
1158
1159 static inline int security_secctx_to_secid(const char *secdata,
1160                                            u32 seclen,
1161                                            u32 *secid)
1162 {
1163         return -EOPNOTSUPP;
1164 }
1165
1166 static inline void security_release_secctx(char *secdata, u32 seclen)
1167 {
1168 }
1169
1170 static inline void security_inode_invalidate_secctx(struct inode *inode)
1171 {
1172 }
1173
1174 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1175 {
1176         return -EOPNOTSUPP;
1177 }
1178 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1179 {
1180         return -EOPNOTSUPP;
1181 }
1182 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1183 {
1184         return -EOPNOTSUPP;
1185 }
1186 #endif  /* CONFIG_SECURITY */
1187
1188 #ifdef CONFIG_SECURITY_NETWORK
1189
1190 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
1191 int security_unix_may_send(struct socket *sock,  struct socket *other);
1192 int security_socket_create(int family, int type, int protocol, int kern);
1193 int security_socket_post_create(struct socket *sock, int family,
1194                                 int type, int protocol, int kern);
1195 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
1196 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
1197 int security_socket_listen(struct socket *sock, int backlog);
1198 int security_socket_accept(struct socket *sock, struct socket *newsock);
1199 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
1200 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1201                             int size, int flags);
1202 int security_socket_getsockname(struct socket *sock);
1203 int security_socket_getpeername(struct socket *sock);
1204 int security_socket_getsockopt(struct socket *sock, int level, int optname);
1205 int security_socket_setsockopt(struct socket *sock, int level, int optname);
1206 int security_socket_shutdown(struct socket *sock, int how);
1207 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
1208 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1209                                       int __user *optlen, unsigned len);
1210 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
1211 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
1212 void security_sk_free(struct sock *sk);
1213 void security_sk_clone(const struct sock *sk, struct sock *newsk);
1214 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
1215 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
1216 void security_sock_graft(struct sock*sk, struct socket *parent);
1217 int security_inet_conn_request(struct sock *sk,
1218                         struct sk_buff *skb, struct request_sock *req);
1219 void security_inet_csk_clone(struct sock *newsk,
1220                         const struct request_sock *req);
1221 void security_inet_conn_established(struct sock *sk,
1222                         struct sk_buff *skb);
1223 int security_secmark_relabel_packet(u32 secid);
1224 void security_secmark_refcount_inc(void);
1225 void security_secmark_refcount_dec(void);
1226 int security_tun_dev_alloc_security(void **security);
1227 void security_tun_dev_free_security(void *security);
1228 int security_tun_dev_create(void);
1229 int security_tun_dev_attach_queue(void *security);
1230 int security_tun_dev_attach(struct sock *sk, void *security);
1231 int security_tun_dev_open(void *security);
1232
1233 #else   /* CONFIG_SECURITY_NETWORK */
1234 static inline int security_unix_stream_connect(struct sock *sock,
1235                                                struct sock *other,
1236                                                struct sock *newsk)
1237 {
1238         return 0;
1239 }
1240
1241 static inline int security_unix_may_send(struct socket *sock,
1242                                          struct socket *other)
1243 {
1244         return 0;
1245 }
1246
1247 static inline int security_socket_create(int family, int type,
1248                                          int protocol, int kern)
1249 {
1250         return 0;
1251 }
1252
1253 static inline int security_socket_post_create(struct socket *sock,
1254                                               int family,
1255                                               int type,
1256                                               int protocol, int kern)
1257 {
1258         return 0;
1259 }
1260
1261 static inline int security_socket_bind(struct socket *sock,
1262                                        struct sockaddr *address,
1263                                        int addrlen)
1264 {
1265         return 0;
1266 }
1267
1268 static inline int security_socket_connect(struct socket *sock,
1269                                           struct sockaddr *address,
1270                                           int addrlen)
1271 {
1272         return 0;
1273 }
1274
1275 static inline int security_socket_listen(struct socket *sock, int backlog)
1276 {
1277         return 0;
1278 }
1279
1280 static inline int security_socket_accept(struct socket *sock,
1281                                          struct socket *newsock)
1282 {
1283         return 0;
1284 }
1285
1286 static inline int security_socket_sendmsg(struct socket *sock,
1287                                           struct msghdr *msg, int size)
1288 {
1289         return 0;
1290 }
1291
1292 static inline int security_socket_recvmsg(struct socket *sock,
1293                                           struct msghdr *msg, int size,
1294                                           int flags)
1295 {
1296         return 0;
1297 }
1298
1299 static inline int security_socket_getsockname(struct socket *sock)
1300 {
1301         return 0;
1302 }
1303
1304 static inline int security_socket_getpeername(struct socket *sock)
1305 {
1306         return 0;
1307 }
1308
1309 static inline int security_socket_getsockopt(struct socket *sock,
1310                                              int level, int optname)
1311 {
1312         return 0;
1313 }
1314
1315 static inline int security_socket_setsockopt(struct socket *sock,
1316                                              int level, int optname)
1317 {
1318         return 0;
1319 }
1320
1321 static inline int security_socket_shutdown(struct socket *sock, int how)
1322 {
1323         return 0;
1324 }
1325 static inline int security_sock_rcv_skb(struct sock *sk,
1326                                         struct sk_buff *skb)
1327 {
1328         return 0;
1329 }
1330
1331 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1332                                                     int __user *optlen, unsigned len)
1333 {
1334         return -ENOPROTOOPT;
1335 }
1336
1337 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1338 {
1339         return -ENOPROTOOPT;
1340 }
1341
1342 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1343 {
1344         return 0;
1345 }
1346
1347 static inline void security_sk_free(struct sock *sk)
1348 {
1349 }
1350
1351 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
1352 {
1353 }
1354
1355 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1356 {
1357 }
1358
1359 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1360 {
1361 }
1362
1363 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
1364 {
1365 }
1366
1367 static inline int security_inet_conn_request(struct sock *sk,
1368                         struct sk_buff *skb, struct request_sock *req)
1369 {
1370         return 0;
1371 }
1372
1373 static inline void security_inet_csk_clone(struct sock *newsk,
1374                         const struct request_sock *req)
1375 {
1376 }
1377
1378 static inline void security_inet_conn_established(struct sock *sk,
1379                         struct sk_buff *skb)
1380 {
1381 }
1382
1383 static inline int security_secmark_relabel_packet(u32 secid)
1384 {
1385         return 0;
1386 }
1387
1388 static inline void security_secmark_refcount_inc(void)
1389 {
1390 }
1391
1392 static inline void security_secmark_refcount_dec(void)
1393 {
1394 }
1395
1396 static inline int security_tun_dev_alloc_security(void **security)
1397 {
1398         return 0;
1399 }
1400
1401 static inline void security_tun_dev_free_security(void *security)
1402 {
1403 }
1404
1405 static inline int security_tun_dev_create(void)
1406 {
1407         return 0;
1408 }
1409
1410 static inline int security_tun_dev_attach_queue(void *security)
1411 {
1412         return 0;
1413 }
1414
1415 static inline int security_tun_dev_attach(struct sock *sk, void *security)
1416 {
1417         return 0;
1418 }
1419
1420 static inline int security_tun_dev_open(void *security)
1421 {
1422         return 0;
1423 }
1424 #endif  /* CONFIG_SECURITY_NETWORK */
1425
1426 #ifdef CONFIG_SECURITY_INFINIBAND
1427 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey);
1428 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num);
1429 int security_ib_alloc_security(void **sec);
1430 void security_ib_free_security(void *sec);
1431 #else   /* CONFIG_SECURITY_INFINIBAND */
1432 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
1433 {
1434         return 0;
1435 }
1436
1437 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
1438 {
1439         return 0;
1440 }
1441
1442 static inline int security_ib_alloc_security(void **sec)
1443 {
1444         return 0;
1445 }
1446
1447 static inline void security_ib_free_security(void *sec)
1448 {
1449 }
1450 #endif  /* CONFIG_SECURITY_INFINIBAND */
1451
1452 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1453
1454 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1455                                struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
1456 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
1457 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
1458 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
1459 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
1460 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1461                                       struct xfrm_sec_ctx *polsec, u32 secid);
1462 int security_xfrm_state_delete(struct xfrm_state *x);
1463 void security_xfrm_state_free(struct xfrm_state *x);
1464 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1465 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1466                                        struct xfrm_policy *xp,
1467                                        const struct flowi *fl);
1468 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
1469 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
1470
1471 #else   /* CONFIG_SECURITY_NETWORK_XFRM */
1472
1473 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1474                                              struct xfrm_user_sec_ctx *sec_ctx,
1475                                              gfp_t gfp)
1476 {
1477         return 0;
1478 }
1479
1480 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
1481 {
1482         return 0;
1483 }
1484
1485 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1486 {
1487 }
1488
1489 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1490 {
1491         return 0;
1492 }
1493
1494 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
1495                                         struct xfrm_user_sec_ctx *sec_ctx)
1496 {
1497         return 0;
1498 }
1499
1500 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1501                                         struct xfrm_sec_ctx *polsec, u32 secid)
1502 {
1503         return 0;
1504 }
1505
1506 static inline void security_xfrm_state_free(struct xfrm_state *x)
1507 {
1508 }
1509
1510 static inline int security_xfrm_state_delete(struct xfrm_state *x)
1511 {
1512         return 0;
1513 }
1514
1515 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1516 {
1517         return 0;
1518 }
1519
1520 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1521                         struct xfrm_policy *xp, const struct flowi *fl)
1522 {
1523         return 1;
1524 }
1525
1526 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1527 {
1528         return 0;
1529 }
1530
1531 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1532 {
1533 }
1534
1535 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1536
1537 #ifdef CONFIG_SECURITY_PATH
1538 int security_path_unlink(const struct path *dir, struct dentry *dentry);
1539 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode);
1540 int security_path_rmdir(const struct path *dir, struct dentry *dentry);
1541 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
1542                         unsigned int dev);
1543 int security_path_truncate(const struct path *path);
1544 int security_path_symlink(const struct path *dir, struct dentry *dentry,
1545                           const char *old_name);
1546 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
1547                        struct dentry *new_dentry);
1548 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
1549                          const struct path *new_dir, struct dentry *new_dentry,
1550                          unsigned int flags);
1551 int security_path_chmod(const struct path *path, umode_t mode);
1552 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid);
1553 int security_path_chroot(const struct path *path);
1554 #else   /* CONFIG_SECURITY_PATH */
1555 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry)
1556 {
1557         return 0;
1558 }
1559
1560 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry,
1561                                       umode_t mode)
1562 {
1563         return 0;
1564 }
1565
1566 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry)
1567 {
1568         return 0;
1569 }
1570
1571 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry,
1572                                       umode_t mode, unsigned int dev)
1573 {
1574         return 0;
1575 }
1576
1577 static inline int security_path_truncate(const struct path *path)
1578 {
1579         return 0;
1580 }
1581
1582 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry,
1583                                         const char *old_name)
1584 {
1585         return 0;
1586 }
1587
1588 static inline int security_path_link(struct dentry *old_dentry,
1589                                      const struct path *new_dir,
1590                                      struct dentry *new_dentry)
1591 {
1592         return 0;
1593 }
1594
1595 static inline int security_path_rename(const struct path *old_dir,
1596                                        struct dentry *old_dentry,
1597                                        const struct path *new_dir,
1598                                        struct dentry *new_dentry,
1599                                        unsigned int flags)
1600 {
1601         return 0;
1602 }
1603
1604 static inline int security_path_chmod(const struct path *path, umode_t mode)
1605 {
1606         return 0;
1607 }
1608
1609 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
1610 {
1611         return 0;
1612 }
1613
1614 static inline int security_path_chroot(const struct path *path)
1615 {
1616         return 0;
1617 }
1618 #endif  /* CONFIG_SECURITY_PATH */
1619
1620 #ifdef CONFIG_KEYS
1621 #ifdef CONFIG_SECURITY
1622
1623 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
1624 void security_key_free(struct key *key);
1625 int security_key_permission(key_ref_t key_ref,
1626                             const struct cred *cred, unsigned perm);
1627 int security_key_getsecurity(struct key *key, char **_buffer);
1628
1629 #else
1630
1631 static inline int security_key_alloc(struct key *key,
1632                                      const struct cred *cred,
1633                                      unsigned long flags)
1634 {
1635         return 0;
1636 }
1637
1638 static inline void security_key_free(struct key *key)
1639 {
1640 }
1641
1642 static inline int security_key_permission(key_ref_t key_ref,
1643                                           const struct cred *cred,
1644                                           unsigned perm)
1645 {
1646         return 0;
1647 }
1648
1649 static inline int security_key_getsecurity(struct key *key, char **_buffer)
1650 {
1651         *_buffer = NULL;
1652         return 0;
1653 }
1654
1655 #endif
1656 #endif /* CONFIG_KEYS */
1657
1658 #ifdef CONFIG_AUDIT
1659 #ifdef CONFIG_SECURITY
1660 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
1661 int security_audit_rule_known(struct audit_krule *krule);
1662 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1663                               struct audit_context *actx);
1664 void security_audit_rule_free(void *lsmrule);
1665
1666 #else
1667
1668 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
1669                                            void **lsmrule)
1670 {
1671         return 0;
1672 }
1673
1674 static inline int security_audit_rule_known(struct audit_krule *krule)
1675 {
1676         return 0;
1677 }
1678
1679 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
1680                                    void *lsmrule, struct audit_context *actx)
1681 {
1682         return 0;
1683 }
1684
1685 static inline void security_audit_rule_free(void *lsmrule)
1686 { }
1687
1688 #endif /* CONFIG_SECURITY */
1689 #endif /* CONFIG_AUDIT */
1690
1691 #ifdef CONFIG_SECURITYFS
1692
1693 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
1694                                              struct dentry *parent, void *data,
1695                                              const struct file_operations *fops);
1696 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
1697 struct dentry *securityfs_create_symlink(const char *name,
1698                                          struct dentry *parent,
1699                                          const char *target,
1700                                          const struct inode_operations *iops);
1701 extern void securityfs_remove(struct dentry *dentry);
1702
1703 #else /* CONFIG_SECURITYFS */
1704
1705 static inline struct dentry *securityfs_create_dir(const char *name,
1706                                                    struct dentry *parent)
1707 {
1708         return ERR_PTR(-ENODEV);
1709 }
1710
1711 static inline struct dentry *securityfs_create_file(const char *name,
1712                                                     umode_t mode,
1713                                                     struct dentry *parent,
1714                                                     void *data,
1715                                                     const struct file_operations *fops)
1716 {
1717         return ERR_PTR(-ENODEV);
1718 }
1719
1720 static inline struct dentry *securityfs_create_symlink(const char *name,
1721                                         struct dentry *parent,
1722                                         const char *target,
1723                                         const struct inode_operations *iops)
1724 {
1725         return ERR_PTR(-ENODEV);
1726 }
1727
1728 static inline void securityfs_remove(struct dentry *dentry)
1729 {}
1730
1731 #endif
1732
1733 #ifdef CONFIG_BPF_SYSCALL
1734 union bpf_attr;
1735 struct bpf_map;
1736 struct bpf_prog;
1737 struct bpf_prog_aux;
1738 #ifdef CONFIG_SECURITY
1739 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size);
1740 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode);
1741 extern int security_bpf_prog(struct bpf_prog *prog);
1742 extern int security_bpf_map_alloc(struct bpf_map *map);
1743 extern void security_bpf_map_free(struct bpf_map *map);
1744 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux);
1745 extern void security_bpf_prog_free(struct bpf_prog_aux *aux);
1746 #else
1747 static inline int security_bpf(int cmd, union bpf_attr *attr,
1748                                              unsigned int size)
1749 {
1750         return 0;
1751 }
1752
1753 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode)
1754 {
1755         return 0;
1756 }
1757
1758 static inline int security_bpf_prog(struct bpf_prog *prog)
1759 {
1760         return 0;
1761 }
1762
1763 static inline int security_bpf_map_alloc(struct bpf_map *map)
1764 {
1765         return 0;
1766 }
1767
1768 static inline void security_bpf_map_free(struct bpf_map *map)
1769 { }
1770
1771 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
1772 {
1773         return 0;
1774 }
1775
1776 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux)
1777 { }
1778 #endif /* CONFIG_SECURITY */
1779 #endif /* CONFIG_BPF_SYSCALL */
1780
1781 #ifdef CONFIG_SECURITY
1782
1783 static inline char *alloc_secdata(void)
1784 {
1785         return (char *)get_zeroed_page(GFP_KERNEL);
1786 }
1787
1788 static inline void free_secdata(void *secdata)
1789 {
1790         free_page((unsigned long)secdata);
1791 }
1792
1793 #else
1794
1795 static inline char *alloc_secdata(void)
1796 {
1797         return (char *)1;
1798 }
1799
1800 static inline void free_secdata(void *secdata)
1801 { }
1802 #endif /* CONFIG_SECURITY */
1803
1804 #ifdef CONFIG_LOCK_DOWN_KERNEL
1805 extern void __init init_lockdown(void);
1806 #else
1807 static inline void __init init_lockdown(void)
1808 {
1809 }
1810 #endif
1811
1812 #endif /* ! __LINUX_SECURITY_H */
1813