include/linux/security.h

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