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