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