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/kernel_read_file.h>
  27 #include <linux/key.h>
  28 #include <linux/capability.h>
  29 #include <linux/fs.h>
  30 #include <linux/slab.h>
  31 #include <linux/err.h>
  32 #include <linux/string.h>
  33 #include <linux/mm.h>
  34
  35 struct linux_binprm;
  36 struct cred;
  37 struct rlimit;
  38 struct kernel_siginfo;
  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 msg_msg;
  53 struct xattr;
  54 struct kernfs_node;
  55 struct xfrm_sec_ctx;
  56 struct mm_struct;
  57 struct fs_context;
  58 struct fs_parameter;
  59 enum fs_value_type;
  60 struct watch;
  61 struct watch_notification;
  62
  63 /* Default (no) options for the capable function */
  64 #define CAP_OPT_NONE 0x0
  65 /* If capable should audit the security request */
  66 #define CAP_OPT_NOAUDIT BIT(1)
  67 /* If capable is being called by a setid function */
  68 #define CAP_OPT_INSETID BIT(2)
  69
  70 /* LSM Agnostic defines for fs_context::lsm_flags */
  71 #define SECURITY_LSM_NATIVE_LABELS      1
  72
  73 struct ctl_table;
  74 struct audit_krule;
  75 struct user_namespace;
  76 struct timezone;
  77
  78 enum lsm_event {
  79         LSM_POLICY_CHANGE,
  80 };
  81
  82 /*
  83  * These are reasons that can be passed to the security_locked_down()
  84  * LSM hook. Lockdown reasons that protect kernel integrity (ie, the
  85  * ability for userland to modify kernel code) are placed before
  86  * LOCKDOWN_INTEGRITY_MAX.  Lockdown reasons that protect kernel
  87  * confidentiality (ie, the ability for userland to extract
  88  * information from the running kernel that would otherwise be
  89  * restricted) are placed before LOCKDOWN_CONFIDENTIALITY_MAX.
  90  *
  91  * LSM authors should note that the semantics of any given lockdown
  92  * reason are not guaranteed to be stable - the same reason may block
  93  * one set of features in one kernel release, and a slightly different
  94  * set of features in a later kernel release. LSMs that seek to expose
  95  * lockdown policy at any level of granularity other than "none",
  96  * "integrity" or "confidentiality" are responsible for either
  97  * ensuring that they expose a consistent level of functionality to
  98  * userland, or ensuring that userland is aware that this is
  99  * potentially a moving target. It is easy to misuse this information
 100  * in a way that could break userspace. Please be careful not to do
 101  * so.
 102  *
 103  * If you add to this, remember to extend lockdown_reasons in
 104  * security/lockdown/lockdown.c.
 105  */
 106 enum lockdown_reason {
 107         LOCKDOWN_NONE,
 108         LOCKDOWN_MODULE_SIGNATURE,
 109         LOCKDOWN_DEV_MEM,
 110         LOCKDOWN_EFI_TEST,
 111         LOCKDOWN_KEXEC,
 112         LOCKDOWN_HIBERNATION,
 113         LOCKDOWN_PCI_ACCESS,
 114         LOCKDOWN_IOPORT,
 115         LOCKDOWN_MSR,
 116         LOCKDOWN_ACPI_TABLES,
 117         LOCKDOWN_PCMCIA_CIS,
 118         LOCKDOWN_TIOCSSERIAL,
 119         LOCKDOWN_MODULE_PARAMETERS,
 120         LOCKDOWN_MMIOTRACE,
 121         LOCKDOWN_DEBUGFS,
 122         LOCKDOWN_XMON_WR,
 123         LOCKDOWN_BPF_WRITE_USER,
 124         LOCKDOWN_INTEGRITY_MAX,
 125         LOCKDOWN_KCORE,
 126         LOCKDOWN_KPROBES,
 127         LOCKDOWN_BPF_READ_KERNEL,
 128         LOCKDOWN_PERF,
 129         LOCKDOWN_TRACEFS,
 130         LOCKDOWN_XMON_RW,
 131         LOCKDOWN_XFRM_SECRET,
 132         LOCKDOWN_CONFIDENTIALITY_MAX,
 133 };
 134
 135 extern const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1];
 136
 137 /*
 138  * A "security context" is the text representation of
 139  * the information used by LSMs.
 140  * This structure contains the string, its length, and which LSM
 141  * it is useful for.
 142  */
 143 struct lsmcontext {
 144         char    *context;       /* Provided by the module */
 145         u32     len;
 146         int     slot;           /* Identifies the module */
 147 };
 148
 149 /**
 150  * lsmcontext_init - initialize an lsmcontext structure.
 151  * @cp: Pointer to the context to initialize
 152  * @context: Initial context, or NULL
 153  * @size: Size of context, or 0
 154  * @slot: Which LSM provided the context
 155  *
 156  * Fill in the lsmcontext from the provided information.
 157  * This is a scaffolding function that will be removed when
 158  * lsmcontext integration is complete.
 159  */
 160 static inline void lsmcontext_init(struct lsmcontext *cp, char *context,
 161                                    u32 size, int slot)
 162 {
 163         cp->slot = slot;
 164         cp->context = context;
 165         cp->len = size;
 166 }
 167
 168 /*
 169  * Data exported by the security modules
 170  *
 171  * Any LSM that provides secid or secctx based hooks must be included.
 172  */
 173 #define LSMBLOB_ENTRIES ( \
 174         (IS_ENABLED(CONFIG_SECURITY_SELINUX) ? 1 : 0) + \
 175         (IS_ENABLED(CONFIG_SECURITY_SMACK) ? 1 : 0) + \
 176         (IS_ENABLED(CONFIG_SECURITY_APPARMOR) ? 1 : 0) + \
 177         (IS_ENABLED(CONFIG_BPF_LSM) ? 1 : 0))
 178
 179 struct lsmblob {
 180         u32     secid[LSMBLOB_ENTRIES];
 181 };
 182
 183 #define LSMBLOB_INVALID         -1      /* Not a valid LSM slot number */
 184 #define LSMBLOB_NEEDED          -2      /* Slot requested on initialization */
 185 #define LSMBLOB_NOT_NEEDED      -3      /* Slot not requested */
 186 #define LSMBLOB_DISPLAY         -4      /* Use the "display" slot */
 187 #define LSMBLOB_FIRST           -5      /* Use the default "display" slot */
 188
 189 /**
 190  * lsmblob_init - initialize an lsmblob structure.
 191  * @blob: Pointer to the data to initialize
 192  * @secid: The initial secid value
 193  *
 194  * Set all secid for all modules to the specified value.
 195  */
 196 static inline void lsmblob_init(struct lsmblob *blob, u32 secid)
 197 {
 198         int i;
 199
 200         for (i = 0; i < LSMBLOB_ENTRIES; i++)
 201                 blob->secid[i] = secid;
 202 }
 203
 204 /**
 205  * lsmblob_is_set - report if there is an value in the lsmblob
 206  * @blob: Pointer to the exported LSM data
 207  *
 208  * Returns true if there is a secid set, false otherwise
 209  */
 210 static inline bool lsmblob_is_set(struct lsmblob *blob)
 211 {
 212         struct lsmblob empty = {};
 213
 214         return !!memcmp(blob, &empty, sizeof(*blob));
 215 }
 216
 217 /**
 218  * lsmblob_equal - report if the two lsmblob's are equal
 219  * @bloba: Pointer to one LSM data
 220  * @blobb: Pointer to the other LSM data
 221  *
 222  * Returns true if all entries in the two are equal, false otherwise
 223  */
 224 static inline bool lsmblob_equal(struct lsmblob *bloba, struct lsmblob *blobb)
 225 {
 226         return !memcmp(bloba, blobb, sizeof(*bloba));
 227 }
 228
 229 /**
 230  * lsmblob_value - find the first non-zero value in an lsmblob structure.
 231  * @blob: Pointer to the data
 232  *
 233  * This needs to be used with extreme caution, as the cases where
 234  * it is appropriate are rare.
 235  *
 236  * Return the first secid value set in the lsmblob.
 237  * There should only be one.
 238  */
 239 static inline u32 lsmblob_value(const struct lsmblob *blob)
 240 {
 241         int i;
 242
 243         for (i = 0; i < LSMBLOB_ENTRIES; i++)
 244                 if (blob->secid[i])
 245                         return blob->secid[i];
 246
 247         return 0;
 248 }
 249
 250 const char *security_lsm_slot_name(int slot);
 251
 252 static inline bool lsm_multiple_contexts(void)
 253 {
 254 #ifdef CONFIG_SECURITY
 255         return security_lsm_slot_name(1) != NULL;
 256 #else
 257         return false;
 258 #endif
 259 }
 260
 261 /* These functions are in security/commoncap.c */
 262 extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
 263                        int cap, unsigned int opts);
 264 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz);
 265 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
 266 extern int cap_ptrace_traceme(struct task_struct *parent);
 267 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
 268 extern int cap_capset(struct cred *new, const struct cred *old,
 269                       const kernel_cap_t *effective,
 270                       const kernel_cap_t *inheritable,
 271                       const kernel_cap_t *permitted);
 272 extern int cap_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file);
 273 int cap_inode_setxattr(struct dentry *dentry, const char *name,
 274                        const void *value, size_t size, int flags);
 275 int cap_inode_removexattr(struct user_namespace *mnt_userns,
 276                           struct dentry *dentry, const char *name);
 277 int cap_inode_need_killpriv(struct dentry *dentry);
 278 int cap_inode_killpriv(struct user_namespace *mnt_userns,
 279                        struct dentry *dentry);
 280 int cap_inode_getsecurity(struct user_namespace *mnt_userns,
 281                           struct inode *inode, const char *name, void **buffer,
 282                           bool alloc);
 283 extern int cap_mmap_addr(unsigned long addr);
 284 extern int cap_mmap_file(struct file *file, unsigned long reqprot,
 285                          unsigned long prot, unsigned long flags);
 286 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
 287 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 288                           unsigned long arg4, unsigned long arg5);
 289 extern int cap_task_setscheduler(struct task_struct *p);
 290 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
 291 extern int cap_task_setnice(struct task_struct *p, int nice);
 292 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
 293
 294 struct msghdr;
 295 struct sk_buff;
 296 struct sock;
 297 struct sockaddr;
 298 struct socket;
 299 struct flowi_common;
 300 struct dst_entry;
 301 struct xfrm_selector;
 302 struct xfrm_policy;
 303 struct xfrm_state;
 304 struct xfrm_user_sec_ctx;
 305 struct seq_file;
 306 struct sctp_endpoint;
 307
 308 #ifdef CONFIG_MMU
 309 extern unsigned long mmap_min_addr;
 310 extern unsigned long dac_mmap_min_addr;
 311 #else
 312 #define mmap_min_addr           0UL
 313 #define dac_mmap_min_addr       0UL
 314 #endif
 315
 316 /*
 317  * Values used in the task_security_ops calls
 318  */
 319 /* setuid or setgid, id0 == uid or gid */
 320 #define LSM_SETID_ID    1
 321
 322 /* setreuid or setregid, id0 == real, id1 == eff */
 323 #define LSM_SETID_RE    2
 324
 325 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
 326 #define LSM_SETID_RES   4
 327
 328 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
 329 #define LSM_SETID_FS    8
 330
 331 /* Flags for security_task_prlimit(). */
 332 #define LSM_PRLIMIT_READ  1
 333 #define LSM_PRLIMIT_WRITE 2
 334
 335 /* forward declares to avoid warnings */
 336 struct sched_param;
 337 struct request_sock;
 338
 339 /* bprm->unsafe reasons */
 340 #define LSM_UNSAFE_SHARE        1
 341 #define LSM_UNSAFE_PTRACE       2
 342 #define LSM_UNSAFE_NO_NEW_PRIVS 4
 343
 344 #ifdef CONFIG_MMU
 345 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
 346                                  void *buffer, size_t *lenp, loff_t *ppos);
 347 #endif
 348
 349 /* security_inode_init_security callback function to write xattrs */
 350 typedef int (*initxattrs) (struct inode *inode,
 351                            const struct xattr *xattr_array, void *fs_data);
 352
 353
 354 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */
 355 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM,
 356 #define __data_id_stringify(dummy, str) #str,
 357
 358 enum kernel_load_data_id {
 359         __kernel_read_file_id(__data_id_enumify)
 360 };
 361
 362 static const char * const kernel_load_data_str[] = {
 363         __kernel_read_file_id(__data_id_stringify)
 364 };
 365
 366 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id)
 367 {
 368         if ((unsigned)id >= LOADING_MAX_ID)
 369                 return kernel_load_data_str[LOADING_UNKNOWN];
 370
 371         return kernel_load_data_str[id];
 372 }
 373
 374 #ifdef CONFIG_SECURITY
 375
 376 int call_blocking_lsm_notifier(enum lsm_event event, void *data);
 377 int register_blocking_lsm_notifier(struct notifier_block *nb);
 378 int unregister_blocking_lsm_notifier(struct notifier_block *nb);
 379
 380 /* prototypes */
 381 extern int security_init(void);
 382 extern int early_security_init(void);
 383
 384 /* Security operations */
 385 int security_binder_set_context_mgr(const struct cred *mgr);
 386 int security_binder_transaction(const struct cred *from,
 387                                 const struct cred *to);
 388 int security_binder_transfer_binder(const struct cred *from,
 389                                     const struct cred *to);
 390 int security_binder_transfer_file(const struct cred *from,
 391                                   const struct cred *to, struct file *file);
 392 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
 393 int security_ptrace_traceme(struct task_struct *parent);
 394 int security_capget(struct task_struct *target,
 395                     kernel_cap_t *effective,
 396                     kernel_cap_t *inheritable,
 397                     kernel_cap_t *permitted);
 398 int security_capset(struct cred *new, const struct cred *old,
 399                     const kernel_cap_t *effective,
 400                     const kernel_cap_t *inheritable,
 401                     const kernel_cap_t *permitted);
 402 int security_capable(const struct cred *cred,
 403                        struct user_namespace *ns,
 404                        int cap,
 405                        unsigned int opts);
 406 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
 407 int security_quota_on(struct dentry *dentry);
 408 int security_syslog(int type);
 409 int security_settime64(const struct timespec64 *ts, const struct timezone *tz);
 410 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
 411 int security_bprm_creds_for_exec(struct linux_binprm *bprm);
 412 int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file);
 413 int security_bprm_check(struct linux_binprm *bprm);
 414 void security_bprm_committing_creds(struct linux_binprm *bprm);
 415 void security_bprm_committed_creds(struct linux_binprm *bprm);
 416 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc);
 417 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param);
 418 int security_sb_alloc(struct super_block *sb);
 419 void security_sb_delete(struct super_block *sb);
 420 void security_sb_free(struct super_block *sb);
 421 void security_free_mnt_opts(void **mnt_opts);
 422 int security_sb_eat_lsm_opts(char *options, void **mnt_opts);
 423 int security_sb_mnt_opts_compat(struct super_block *sb, void *mnt_opts);
 424 int security_sb_remount(struct super_block *sb, void *mnt_opts);
 425 int security_sb_kern_mount(struct super_block *sb);
 426 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
 427 int security_sb_statfs(struct dentry *dentry);
 428 int security_sb_mount(const char *dev_name, const struct path *path,
 429                       const char *type, unsigned long flags, void *data);
 430 int security_sb_umount(struct vfsmount *mnt, int flags);
 431 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path);
 432 int security_sb_set_mnt_opts(struct super_block *sb,
 433                                 void *mnt_opts,
 434                                 unsigned long kern_flags,
 435                                 unsigned long *set_kern_flags);
 436 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 437                                 struct super_block *newsb,
 438                                 unsigned long kern_flags,
 439                                 unsigned long *set_kern_flags);
 440 int security_add_mnt_opt(const char *option, const char *val,
 441                                 int len, void **mnt_opts);
 442 int security_move_mount(const struct path *from_path, const struct path *to_path);
 443 int security_dentry_init_security(struct dentry *dentry, int mode,
 444                                         const struct qstr *name, void **ctx,
 445                                         u32 *ctxlen);
 446 int security_dentry_create_files_as(struct dentry *dentry, int mode,
 447                                         struct qstr *name,
 448                                         const struct cred *old,
 449                                         struct cred *new);
 450 int security_path_notify(const struct path *path, u64 mask,
 451                                         unsigned int obj_type);
 452 int security_inode_alloc(struct inode *inode);
 453 void security_inode_free(struct inode *inode);
 454 int security_inode_init_security(struct inode *inode, struct inode *dir,
 455                                  const struct qstr *qstr,
 456                                  initxattrs initxattrs, void *fs_data);
 457 int security_inode_init_security_anon(struct inode *inode,
 458                                       const struct qstr *name,
 459                                       const struct inode *context_inode);
 460 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
 461                                      const struct qstr *qstr, const char **name,
 462                                      void **value, size_t *len);
 463 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
 464 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 465                          struct dentry *new_dentry);
 466 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
 467 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 468                            const char *old_name);
 469 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
 470 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
 471 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
 472 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 473                           struct inode *new_dir, struct dentry *new_dentry,
 474                           unsigned int flags);
 475 int security_inode_readlink(struct dentry *dentry);
 476 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
 477                                bool rcu);
 478 int security_inode_permission(struct inode *inode, int mask);
 479 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
 480 int security_inode_getattr(const struct path *path);
 481 int security_inode_setxattr(struct user_namespace *mnt_userns,
 482                             struct dentry *dentry, const char *name,
 483                             const void *value, size_t size, int flags);
 484 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 485                                   const void *value, size_t size, int flags);
 486 int security_inode_getxattr(struct dentry *dentry, const char *name);
 487 int security_inode_listxattr(struct dentry *dentry);
 488 int security_inode_removexattr(struct user_namespace *mnt_userns,
 489                                struct dentry *dentry, const char *name);
 490 int security_inode_need_killpriv(struct dentry *dentry);
 491 int security_inode_killpriv(struct user_namespace *mnt_userns,
 492                             struct dentry *dentry);
 493 int security_inode_getsecurity(struct user_namespace *mnt_userns,
 494                                struct inode *inode, const char *name,
 495                                void **buffer, bool alloc);
 496 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
 497 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
 498 void security_inode_getsecid(struct inode *inode, struct lsmblob *blob);
 499 int security_inode_copy_up(struct dentry *src, struct cred **new);
 500 int security_inode_copy_up_xattr(const char *name);
 501 int security_kernfs_init_security(struct kernfs_node *kn_dir,
 502                                   struct kernfs_node *kn);
 503 int security_file_permission(struct file *file, int mask);
 504 int security_file_alloc(struct file *file);
 505 void security_file_free(struct file *file);
 506 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
 507 int security_mmap_file(struct file *file, unsigned long prot,
 508                         unsigned long flags);
 509 int security_mmap_addr(unsigned long addr);
 510 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 511                            unsigned long prot);
 512 int security_file_lock(struct file *file, unsigned int cmd);
 513 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
 514 void security_file_set_fowner(struct file *file);
 515 int security_file_send_sigiotask(struct task_struct *tsk,
 516                                  struct fown_struct *fown, int sig);
 517 int security_file_receive(struct file *file);
 518 int security_file_open(struct file *file);
 519 int security_task_alloc(struct task_struct *task, unsigned long clone_flags);
 520 void security_task_free(struct task_struct *task);
 521 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
 522 void security_cred_free(struct cred *cred);
 523 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
 524 void security_transfer_creds(struct cred *new, const struct cred *old);
 525 void security_cred_getsecid(const struct cred *c, struct lsmblob *blob);
 526 int security_kernel_act_as(struct cred *new, struct lsmblob *blob);
 527 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
 528 int security_kernel_module_request(char *kmod_name);
 529 int security_kernel_load_data(enum kernel_load_data_id id, bool contents);
 530 int security_kernel_post_load_data(char *buf, loff_t size,
 531                                    enum kernel_load_data_id id,
 532                                    char *description);
 533 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id,
 534                               bool contents);
 535 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
 536                                    enum kernel_read_file_id id);
 537 int security_task_fix_setuid(struct cred *new, const struct cred *old,
 538                              int flags);
 539 int security_task_fix_setgid(struct cred *new, const struct cred *old,
 540                              int flags);
 541 int security_task_setpgid(struct task_struct *p, pid_t pgid);
 542 int security_task_getpgid(struct task_struct *p);
 543 int security_task_getsid(struct task_struct *p);
 544 void security_task_getsecid_subj(struct task_struct *p, struct lsmblob *blob);
 545 void security_task_getsecid_obj(struct task_struct *p, struct lsmblob *blob);
 546 int security_task_setnice(struct task_struct *p, int nice);
 547 int security_task_setioprio(struct task_struct *p, int ioprio);
 548 int security_task_getioprio(struct task_struct *p);
 549 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
 550                           unsigned int flags);
 551 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
 552                 struct rlimit *new_rlim);
 553 int security_task_setscheduler(struct task_struct *p);
 554 int security_task_getscheduler(struct task_struct *p);
 555 int security_task_movememory(struct task_struct *p);
 556 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info,
 557                         int sig, const struct cred *cred);
 558 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 559                         unsigned long arg4, unsigned long arg5);
 560 void security_task_to_inode(struct task_struct *p, struct inode *inode);
 561 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
 562 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, struct lsmblob *blob);
 563 int security_msg_msg_alloc(struct msg_msg *msg);
 564 void security_msg_msg_free(struct msg_msg *msg);
 565 int security_msg_queue_alloc(struct kern_ipc_perm *msq);
 566 void security_msg_queue_free(struct kern_ipc_perm *msq);
 567 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg);
 568 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd);
 569 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
 570                               struct msg_msg *msg, int msqflg);
 571 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
 572                               struct task_struct *target, long type, int mode);
 573 int security_shm_alloc(struct kern_ipc_perm *shp);
 574 void security_shm_free(struct kern_ipc_perm *shp);
 575 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg);
 576 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd);
 577 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg);
 578 int security_sem_alloc(struct kern_ipc_perm *sma);
 579 void security_sem_free(struct kern_ipc_perm *sma);
 580 int security_sem_associate(struct kern_ipc_perm *sma, int semflg);
 581 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd);
 582 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
 583                         unsigned nsops, int alter);
 584 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
 585 int security_getprocattr(struct task_struct *p, const char *lsm, char *name,
 586                          char **value);
 587 int security_setprocattr(const char *lsm, const char *name, void *value,
 588                          size_t size);
 589 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
 590 int security_ismaclabel(const char *name);
 591 int security_secid_to_secctx(struct lsmblob *blob, struct lsmcontext *cp,
 592                              int display);
 593 int security_secctx_to_secid(const char *secdata, u32 seclen,
 594                              struct lsmblob *blob);
 595 void security_release_secctx(struct lsmcontext *cp);
 596 void security_inode_invalidate_secctx(struct inode *inode);
 597 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
 598 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
 599 int security_inode_getsecctx(struct inode *inode, struct lsmcontext *cp);
 600 int security_locked_down(enum lockdown_reason what);
 601 int security_lock_kernel_down(const char *where, enum lockdown_reason level);
 602 #else /* CONFIG_SECURITY */
 603
 604 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data)
 605 {
 606         return 0;
 607 }
 608
 609 static inline int register_blocking_lsm_notifier(struct notifier_block *nb)
 610 {
 611         return 0;
 612 }
 613
 614 static inline  int unregister_blocking_lsm_notifier(struct notifier_block *nb)
 615 {
 616         return 0;
 617 }
 618
 619 static inline void security_free_mnt_opts(void **mnt_opts)
 620 {
 621 }
 622
 623 /*
 624  * This is the default capabilities functionality.  Most of these functions
 625  * are just stubbed out, but a few must call the proper capable code.
 626  */
 627
 628 static inline int security_init(void)
 629 {
 630         return 0;
 631 }
 632
 633 static inline int early_security_init(void)
 634 {
 635         return 0;
 636 }
 637
 638 static inline int security_binder_set_context_mgr(const struct cred *mgr)
 639 {
 640         return 0;
 641 }
 642
 643 static inline int security_binder_transaction(const struct cred *from,
 644                                               const struct cred *to)
 645 {
 646         return 0;
 647 }
 648
 649 static inline int security_binder_transfer_binder(const struct cred *from,
 650                                                   const struct cred *to)
 651 {
 652         return 0;
 653 }
 654
 655 static inline int security_binder_transfer_file(const struct cred *from,
 656                                                 const struct cred *to,
 657                                                 struct file *file)
 658 {
 659         return 0;
 660 }
 661
 662 static inline int security_ptrace_access_check(struct task_struct *child,
 663                                              unsigned int mode)
 664 {
 665         return cap_ptrace_access_check(child, mode);
 666 }
 667
 668 static inline int security_ptrace_traceme(struct task_struct *parent)
 669 {
 670         return cap_ptrace_traceme(parent);
 671 }
 672
 673 static inline int security_capget(struct task_struct *target,
 674                                    kernel_cap_t *effective,
 675                                    kernel_cap_t *inheritable,
 676                                    kernel_cap_t *permitted)
 677 {
 678         return cap_capget(target, effective, inheritable, permitted);
 679 }
 680
 681 static inline int security_capset(struct cred *new,
 682                                    const struct cred *old,
 683                                    const kernel_cap_t *effective,
 684                                    const kernel_cap_t *inheritable,
 685                                    const kernel_cap_t *permitted)
 686 {
 687         return cap_capset(new, old, effective, inheritable, permitted);
 688 }
 689
 690 static inline int security_capable(const struct cred *cred,
 691                                    struct user_namespace *ns,
 692                                    int cap,
 693                                    unsigned int opts)
 694 {
 695         return cap_capable(cred, ns, cap, opts);
 696 }
 697
 698 static inline int security_quotactl(int cmds, int type, int id,
 699                                      struct super_block *sb)
 700 {
 701         return 0;
 702 }
 703
 704 static inline int security_quota_on(struct dentry *dentry)
 705 {
 706         return 0;
 707 }
 708
 709 static inline int security_syslog(int type)
 710 {
 711         return 0;
 712 }
 713
 714 static inline int security_settime64(const struct timespec64 *ts,
 715                                      const struct timezone *tz)
 716 {
 717         return cap_settime(ts, tz);
 718 }
 719
 720 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 721 {
 722         return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages));
 723 }
 724
 725 static inline int security_bprm_creds_for_exec(struct linux_binprm *bprm)
 726 {
 727         return 0;
 728 }
 729
 730 static inline int security_bprm_creds_from_file(struct linux_binprm *bprm,
 731                                                 struct file *file)
 732 {
 733         return cap_bprm_creds_from_file(bprm, file);
 734 }
 735
 736 static inline int security_bprm_check(struct linux_binprm *bprm)
 737 {
 738         return 0;
 739 }
 740
 741 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
 742 {
 743 }
 744
 745 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
 746 {
 747 }
 748
 749 static inline int security_fs_context_dup(struct fs_context *fc,
 750                                           struct fs_context *src_fc)
 751 {
 752         return 0;
 753 }
 754 static inline int security_fs_context_parse_param(struct fs_context *fc,
 755                                                   struct fs_parameter *param)
 756 {
 757         return -ENOPARAM;
 758 }
 759
 760 static inline int security_sb_alloc(struct super_block *sb)
 761 {
 762         return 0;
 763 }
 764
 765 static inline void security_sb_delete(struct super_block *sb)
 766 { }
 767
 768 static inline void security_sb_free(struct super_block *sb)
 769 { }
 770
 771 static inline int security_sb_eat_lsm_opts(char *options,
 772                                            void **mnt_opts)
 773 {
 774         return 0;
 775 }
 776
 777 static inline int security_sb_remount(struct super_block *sb,
 778                                       void *mnt_opts)
 779 {
 780         return 0;
 781 }
 782
 783 static inline int security_sb_mnt_opts_compat(struct super_block *sb,
 784                                               void *mnt_opts)
 785 {
 786         return 0;
 787 }
 788
 789
 790 static inline int security_sb_kern_mount(struct super_block *sb)
 791 {
 792         return 0;
 793 }
 794
 795 static inline int security_sb_show_options(struct seq_file *m,
 796                                            struct super_block *sb)
 797 {
 798         return 0;
 799 }
 800
 801 static inline int security_sb_statfs(struct dentry *dentry)
 802 {
 803         return 0;
 804 }
 805
 806 static inline int security_sb_mount(const char *dev_name, const struct path *path,
 807                                     const char *type, unsigned long flags,
 808                                     void *data)
 809 {
 810         return 0;
 811 }
 812
 813 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
 814 {
 815         return 0;
 816 }
 817
 818 static inline int security_sb_pivotroot(const struct path *old_path,
 819                                         const struct path *new_path)
 820 {
 821         return 0;
 822 }
 823
 824 static inline int security_sb_set_mnt_opts(struct super_block *sb,
 825                                            void *mnt_opts,
 826                                            unsigned long kern_flags,
 827                                            unsigned long *set_kern_flags)
 828 {
 829         return 0;
 830 }
 831
 832 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 833                                               struct super_block *newsb,
 834                                               unsigned long kern_flags,
 835                                               unsigned long *set_kern_flags)
 836 {
 837         return 0;
 838 }
 839
 840 static inline int security_add_mnt_opt(const char *option, const char *val,
 841                                         int len, void **mnt_opts)
 842 {
 843         return 0;
 844 }
 845
 846 static inline int security_move_mount(const struct path *from_path,
 847                                       const struct path *to_path)
 848 {
 849         return 0;
 850 }
 851
 852 static inline int security_path_notify(const struct path *path, u64 mask,
 853                                 unsigned int obj_type)
 854 {
 855         return 0;
 856 }
 857
 858 static inline int security_inode_alloc(struct inode *inode)
 859 {
 860         return 0;
 861 }
 862
 863 static inline void security_inode_free(struct inode *inode)
 864 { }
 865
 866 static inline int security_dentry_init_security(struct dentry *dentry,
 867                                                  int mode,
 868                                                  const struct qstr *name,
 869                                                  void **ctx,
 870                                                  u32 *ctxlen)
 871 {
 872         return -EOPNOTSUPP;
 873 }
 874
 875 static inline int security_dentry_create_files_as(struct dentry *dentry,
 876                                                   int mode, struct qstr *name,
 877                                                   const struct cred *old,
 878                                                   struct cred *new)
 879 {
 880         return 0;
 881 }
 882
 883
 884 static inline int security_inode_init_security(struct inode *inode,
 885                                                 struct inode *dir,
 886                                                 const struct qstr *qstr,
 887                                                 const initxattrs xattrs,
 888                                                 void *fs_data)
 889 {
 890         return 0;
 891 }
 892
 893 static inline int security_inode_init_security_anon(struct inode *inode,
 894                                                     const struct qstr *name,
 895                                                     const struct inode *context_inode)
 896 {
 897         return 0;
 898 }
 899
 900 static inline int security_old_inode_init_security(struct inode *inode,
 901                                                    struct inode *dir,
 902                                                    const struct qstr *qstr,
 903                                                    const char **name,
 904                                                    void **value, size_t *len)
 905 {
 906         return -EOPNOTSUPP;
 907 }
 908
 909 static inline int security_inode_create(struct inode *dir,
 910                                          struct dentry *dentry,
 911                                          umode_t mode)
 912 {
 913         return 0;
 914 }
 915
 916 static inline int security_inode_link(struct dentry *old_dentry,
 917                                        struct inode *dir,
 918                                        struct dentry *new_dentry)
 919 {
 920         return 0;
 921 }
 922
 923 static inline int security_inode_unlink(struct inode *dir,
 924                                          struct dentry *dentry)
 925 {
 926         return 0;
 927 }
 928
 929 static inline int security_inode_symlink(struct inode *dir,
 930                                           struct dentry *dentry,
 931                                           const char *old_name)
 932 {
 933         return 0;
 934 }
 935
 936 static inline int security_inode_mkdir(struct inode *dir,
 937                                         struct dentry *dentry,
 938                                         int mode)
 939 {
 940         return 0;
 941 }
 942
 943 static inline int security_inode_rmdir(struct inode *dir,
 944                                         struct dentry *dentry)
 945 {
 946         return 0;
 947 }
 948
 949 static inline int security_inode_mknod(struct inode *dir,
 950                                         struct dentry *dentry,
 951                                         int mode, dev_t dev)
 952 {
 953         return 0;
 954 }
 955
 956 static inline int security_inode_rename(struct inode *old_dir,
 957                                          struct dentry *old_dentry,
 958                                          struct inode *new_dir,
 959                                          struct dentry *new_dentry,
 960                                          unsigned int flags)
 961 {
 962         return 0;
 963 }
 964
 965 static inline int security_inode_readlink(struct dentry *dentry)
 966 {
 967         return 0;
 968 }
 969
 970 static inline int security_inode_follow_link(struct dentry *dentry,
 971                                              struct inode *inode,
 972                                              bool rcu)
 973 {
 974         return 0;
 975 }
 976
 977 static inline int security_inode_permission(struct inode *inode, int mask)
 978 {
 979         return 0;
 980 }
 981
 982 static inline int security_inode_setattr(struct dentry *dentry,
 983                                           struct iattr *attr)
 984 {
 985         return 0;
 986 }
 987
 988 static inline int security_inode_getattr(const struct path *path)
 989 {
 990         return 0;
 991 }
 992
 993 static inline int security_inode_setxattr(struct user_namespace *mnt_userns,
 994                 struct dentry *dentry, const char *name, const void *value,
 995                 size_t size, int flags)
 996 {
 997         return cap_inode_setxattr(dentry, name, value, size, flags);
 998 }
 999
1000 static inline void security_inode_post_setxattr(struct dentry *dentry,
1001                 const char *name, const void *value, size_t size, int flags)
1002 { }
1003
1004 static inline int security_inode_getxattr(struct dentry *dentry,
1005                         const char *name)
1006 {
1007         return 0;
1008 }
1009
1010 static inline int security_inode_listxattr(struct dentry *dentry)
1011 {
1012         return 0;
1013 }
1014
1015 static inline int security_inode_removexattr(struct user_namespace *mnt_userns,
1016                                              struct dentry *dentry,
1017                                              const char *name)
1018 {
1019         return cap_inode_removexattr(mnt_userns, dentry, name);
1020 }
1021
1022 static inline int security_inode_need_killpriv(struct dentry *dentry)
1023 {
1024         return cap_inode_need_killpriv(dentry);
1025 }
1026
1027 static inline int security_inode_killpriv(struct user_namespace *mnt_userns,
1028                                           struct dentry *dentry)
1029 {
1030         return cap_inode_killpriv(mnt_userns, dentry);
1031 }
1032
1033 static inline int security_inode_getsecurity(struct user_namespace *mnt_userns,
1034                                              struct inode *inode,
1035                                              const char *name, void **buffer,
1036                                              bool alloc)
1037 {
1038         return cap_inode_getsecurity(mnt_userns, inode, name, buffer, alloc);
1039 }
1040
1041 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
1042 {
1043         return -EOPNOTSUPP;
1044 }
1045
1046 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
1047 {
1048         return 0;
1049 }
1050
1051 static inline void security_inode_getsecid(struct inode *inode,
1052                                            struct lsmblob *blob)
1053 {
1054         lsmblob_init(blob, 0);
1055 }
1056
1057 static inline int security_inode_copy_up(struct dentry *src, struct cred **new)
1058 {
1059         return 0;
1060 }
1061
1062 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir,
1063                                                 struct kernfs_node *kn)
1064 {
1065         return 0;
1066 }
1067
1068 static inline int security_inode_copy_up_xattr(const char *name)
1069 {
1070         return -EOPNOTSUPP;
1071 }
1072
1073 static inline int security_file_permission(struct file *file, int mask)
1074 {
1075         return 0;
1076 }
1077
1078 static inline int security_file_alloc(struct file *file)
1079 {
1080         return 0;
1081 }
1082
1083 static inline void security_file_free(struct file *file)
1084 { }
1085
1086 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
1087                                       unsigned long arg)
1088 {
1089         return 0;
1090 }
1091
1092 static inline int security_mmap_file(struct file *file, unsigned long prot,
1093                                      unsigned long flags)
1094 {
1095         return 0;
1096 }
1097
1098 static inline int security_mmap_addr(unsigned long addr)
1099 {
1100         return cap_mmap_addr(addr);
1101 }
1102
1103 static inline int security_file_mprotect(struct vm_area_struct *vma,
1104                                          unsigned long reqprot,
1105                                          unsigned long prot)
1106 {
1107         return 0;
1108 }
1109
1110 static inline int security_file_lock(struct file *file, unsigned int cmd)
1111 {
1112         return 0;
1113 }
1114
1115 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
1116                                       unsigned long arg)
1117 {
1118         return 0;
1119 }
1120
1121 static inline void security_file_set_fowner(struct file *file)
1122 {
1123         return;
1124 }
1125
1126 static inline int security_file_send_sigiotask(struct task_struct *tsk,
1127                                                struct fown_struct *fown,
1128                                                int sig)
1129 {
1130         return 0;
1131 }
1132
1133 static inline int security_file_receive(struct file *file)
1134 {
1135         return 0;
1136 }
1137
1138 static inline int security_file_open(struct file *file)
1139 {
1140         return 0;
1141 }
1142
1143 static inline int security_task_alloc(struct task_struct *task,
1144                                       unsigned long clone_flags)
1145 {
1146         return 0;
1147 }
1148
1149 static inline void security_task_free(struct task_struct *task)
1150 { }
1151
1152 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
1153 {
1154         return 0;
1155 }
1156
1157 static inline void security_cred_free(struct cred *cred)
1158 { }
1159
1160 static inline int security_prepare_creds(struct cred *new,
1161                                          const struct cred *old,
1162                                          gfp_t gfp)
1163 {
1164         return 0;
1165 }
1166
1167 static inline void security_transfer_creds(struct cred *new,
1168                                            const struct cred *old)
1169 {
1170 }
1171
1172 static inline int security_kernel_act_as(struct cred *cred,
1173                                          struct lsmblob *blob)
1174 {
1175         return 0;
1176 }
1177
1178 static inline int security_kernel_create_files_as(struct cred *cred,
1179                                                   struct inode *inode)
1180 {
1181         return 0;
1182 }
1183
1184 static inline int security_kernel_module_request(char *kmod_name)
1185 {
1186         return 0;
1187 }
1188
1189 static inline int security_kernel_load_data(enum kernel_load_data_id id, bool contents)
1190 {
1191         return 0;
1192 }
1193
1194 static inline int security_kernel_post_load_data(char *buf, loff_t size,
1195                                                  enum kernel_load_data_id id,
1196                                                  char *description)
1197 {
1198         return 0;
1199 }
1200
1201 static inline int security_kernel_read_file(struct file *file,
1202                                             enum kernel_read_file_id id,
1203                                             bool contents)
1204 {
1205         return 0;
1206 }
1207
1208 static inline int security_kernel_post_read_file(struct file *file,
1209                                                  char *buf, loff_t size,
1210                                                  enum kernel_read_file_id id)
1211 {
1212         return 0;
1213 }
1214
1215 static inline int security_task_fix_setuid(struct cred *new,
1216                                            const struct cred *old,
1217                                            int flags)
1218 {
1219         return cap_task_fix_setuid(new, old, flags);
1220 }
1221
1222 static inline int security_task_fix_setgid(struct cred *new,
1223                                            const struct cred *old,
1224                                            int flags)
1225 {
1226         return 0;
1227 }
1228
1229 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
1230 {
1231         return 0;
1232 }
1233
1234 static inline int security_task_getpgid(struct task_struct *p)
1235 {
1236         return 0;
1237 }
1238
1239 static inline int security_task_getsid(struct task_struct *p)
1240 {
1241         return 0;
1242 }
1243
1244 static inline void security_task_getsecid_subj(struct task_struct *p,
1245                                                struct lsmblob *blob)
1246 {
1247         lsmblob_init(blob, 0);
1248 }
1249
1250 static inline void security_task_getsecid_obj(struct task_struct *p,
1251                                               struct lsmblob *blob)
1252 {
1253         lsmblob_init(blob, 0);
1254 }
1255
1256 static inline int security_task_setnice(struct task_struct *p, int nice)
1257 {
1258         return cap_task_setnice(p, nice);
1259 }
1260
1261 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
1262 {
1263         return cap_task_setioprio(p, ioprio);
1264 }
1265
1266 static inline int security_task_getioprio(struct task_struct *p)
1267 {
1268         return 0;
1269 }
1270
1271 static inline int security_task_prlimit(const struct cred *cred,
1272                                         const struct cred *tcred,
1273                                         unsigned int flags)
1274 {
1275         return 0;
1276 }
1277
1278 static inline int security_task_setrlimit(struct task_struct *p,
1279                                           unsigned int resource,
1280                                           struct rlimit *new_rlim)
1281 {
1282         return 0;
1283 }
1284
1285 static inline int security_task_setscheduler(struct task_struct *p)
1286 {
1287         return cap_task_setscheduler(p);
1288 }
1289
1290 static inline int security_task_getscheduler(struct task_struct *p)
1291 {
1292         return 0;
1293 }
1294
1295 static inline int security_task_movememory(struct task_struct *p)
1296 {
1297         return 0;
1298 }
1299
1300 static inline int security_task_kill(struct task_struct *p,
1301                                      struct kernel_siginfo *info, int sig,
1302                                      const struct cred *cred)
1303 {
1304         return 0;
1305 }
1306
1307 static inline int security_task_prctl(int option, unsigned long arg2,
1308                                       unsigned long arg3,
1309                                       unsigned long arg4,
1310                                       unsigned long arg5)
1311 {
1312         return cap_task_prctl(option, arg2, arg3, arg4, arg5);
1313 }
1314
1315 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
1316 { }
1317
1318 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
1319                                           short flag)
1320 {
1321         return 0;
1322 }
1323
1324 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp,
1325                                          struct lsmblob *blob)
1326 {
1327         lsmblob_init(blob, 0);
1328 }
1329
1330 static inline int security_msg_msg_alloc(struct msg_msg *msg)
1331 {
1332         return 0;
1333 }
1334
1335 static inline void security_msg_msg_free(struct msg_msg *msg)
1336 { }
1337
1338 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq)
1339 {
1340         return 0;
1341 }
1342
1343 static inline void security_msg_queue_free(struct kern_ipc_perm *msq)
1344 { }
1345
1346 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq,
1347                                                int msqflg)
1348 {
1349         return 0;
1350 }
1351
1352 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
1353 {
1354         return 0;
1355 }
1356
1357 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
1358                                             struct msg_msg *msg, int msqflg)
1359 {
1360         return 0;
1361 }
1362
1363 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq,
1364                                             struct msg_msg *msg,
1365                                             struct task_struct *target,
1366                                             long type, int mode)
1367 {
1368         return 0;
1369 }
1370
1371 static inline int security_shm_alloc(struct kern_ipc_perm *shp)
1372 {
1373         return 0;
1374 }
1375
1376 static inline void security_shm_free(struct kern_ipc_perm *shp)
1377 { }
1378
1379 static inline int security_shm_associate(struct kern_ipc_perm *shp,
1380                                          int shmflg)
1381 {
1382         return 0;
1383 }
1384
1385 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd)
1386 {
1387         return 0;
1388 }
1389
1390 static inline int security_shm_shmat(struct kern_ipc_perm *shp,
1391                                      char __user *shmaddr, int shmflg)
1392 {
1393         return 0;
1394 }
1395
1396 static inline int security_sem_alloc(struct kern_ipc_perm *sma)
1397 {
1398         return 0;
1399 }
1400
1401 static inline void security_sem_free(struct kern_ipc_perm *sma)
1402 { }
1403
1404 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg)
1405 {
1406         return 0;
1407 }
1408
1409 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd)
1410 {
1411         return 0;
1412 }
1413
1414 static inline int security_sem_semop(struct kern_ipc_perm *sma,
1415                                      struct sembuf *sops, unsigned nsops,
1416                                      int alter)
1417 {
1418         return 0;
1419 }
1420
1421 static inline void security_d_instantiate(struct dentry *dentry,
1422                                           struct inode *inode)
1423 { }
1424
1425 static inline int security_getprocattr(struct task_struct *p, const char *lsm,
1426                                        char *name, char **value)
1427 {
1428         return -EINVAL;
1429 }
1430
1431 static inline int security_setprocattr(const char *lsm, char *name,
1432                                        void *value, size_t size)
1433 {
1434         return -EINVAL;
1435 }
1436
1437 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1438 {
1439         return 0;
1440 }
1441
1442 static inline int security_ismaclabel(const char *name)
1443 {
1444         return 0;
1445 }
1446
1447 static inline int security_secid_to_secctx(struct lsmblob *blob,
1448                                            struct lsmcontext *cp, int display)
1449 {
1450         return -EOPNOTSUPP;
1451 }
1452
1453 static inline int security_secctx_to_secid(const char *secdata,
1454                                            u32 seclen,
1455                                            struct lsmblob *blob)
1456 {
1457         return -EOPNOTSUPP;
1458 }
1459
1460 static inline void security_release_secctx(struct lsmcontext *cp)
1461 {
1462 }
1463
1464 static inline void security_inode_invalidate_secctx(struct inode *inode)
1465 {
1466 }
1467
1468 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1469 {
1470         return -EOPNOTSUPP;
1471 }
1472 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1473 {
1474         return -EOPNOTSUPP;
1475 }
1476 static inline int security_inode_getsecctx(struct inode *inode,
1477                                            struct lsmcontext *cp)
1478 {
1479         return -EOPNOTSUPP;
1480 }
1481 static inline int security_locked_down(enum lockdown_reason what)
1482 {
1483         return 0;
1484 }
1485 static inline int security_lock_kernel_down(const char *where, enum lockdown_reason level)
1486 {
1487         return 0;
1488 }
1489 #endif  /* CONFIG_SECURITY */
1490
1491 #if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE)
1492 int security_post_notification(const struct cred *w_cred,
1493                                const struct cred *cred,
1494                                struct watch_notification *n);
1495 #else
1496 static inline int security_post_notification(const struct cred *w_cred,
1497                                              const struct cred *cred,
1498                                              struct watch_notification *n)
1499 {
1500         return 0;
1501 }
1502 #endif
1503
1504 #if defined(CONFIG_SECURITY) && defined(CONFIG_KEY_NOTIFICATIONS)
1505 int security_watch_key(struct key *key);
1506 #else
1507 static inline int security_watch_key(struct key *key)
1508 {
1509         return 0;
1510 }
1511 #endif
1512
1513 #ifdef CONFIG_SECURITY_NETWORK
1514
1515 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
1516 int security_unix_may_send(struct socket *sock,  struct socket *other);
1517 int security_socket_create(int family, int type, int protocol, int kern);
1518 int security_socket_post_create(struct socket *sock, int family,
1519                                 int type, int protocol, int kern);
1520 int security_socket_socketpair(struct socket *socka, struct socket *sockb);
1521 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
1522 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
1523 int security_socket_listen(struct socket *sock, int backlog);
1524 int security_socket_accept(struct socket *sock, struct socket *newsock);
1525 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
1526 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1527                             int size, int flags);
1528 int security_socket_getsockname(struct socket *sock);
1529 int security_socket_getpeername(struct socket *sock);
1530 int security_socket_getsockopt(struct socket *sock, int level, int optname);
1531 int security_socket_setsockopt(struct socket *sock, int level, int optname);
1532 int security_socket_shutdown(struct socket *sock, int how);
1533 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
1534 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1535                                       int __user *optlen, unsigned len);
1536 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb,
1537                                      struct lsmblob *blob);
1538 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
1539 void security_sk_free(struct sock *sk);
1540 void security_sk_clone(const struct sock *sk, struct sock *newsk);
1541 void security_sk_classify_flow(struct sock *sk, struct flowi_common *flic);
1542 void security_req_classify_flow(const struct request_sock *req,
1543                                 struct flowi_common *flic);
1544 void security_sock_graft(struct sock*sk, struct socket *parent);
1545 int security_inet_conn_request(const struct sock *sk,
1546                         struct sk_buff *skb, struct request_sock *req);
1547 void security_inet_csk_clone(struct sock *newsk,
1548                         const struct request_sock *req);
1549 void security_inet_conn_established(struct sock *sk,
1550                         struct sk_buff *skb);
1551 int security_secmark_relabel_packet(struct lsmblob *blob);
1552 void security_secmark_refcount_inc(void);
1553 void security_secmark_refcount_dec(void);
1554 int security_tun_dev_alloc_security(void **security);
1555 void security_tun_dev_free_security(void *security);
1556 int security_tun_dev_create(void);
1557 int security_tun_dev_attach_queue(void *security);
1558 int security_tun_dev_attach(struct sock *sk, void *security);
1559 int security_tun_dev_open(void *security);
1560 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb);
1561 int security_sctp_bind_connect(struct sock *sk, int optname,
1562                                struct sockaddr *address, int addrlen);
1563 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk,
1564                             struct sock *newsk);
1565
1566 #else   /* CONFIG_SECURITY_NETWORK */
1567 static inline int security_unix_stream_connect(struct sock *sock,
1568                                                struct sock *other,
1569                                                struct sock *newsk)
1570 {
1571         return 0;
1572 }
1573
1574 static inline int security_unix_may_send(struct socket *sock,
1575                                          struct socket *other)
1576 {
1577         return 0;
1578 }
1579
1580 static inline int security_socket_create(int family, int type,
1581                                          int protocol, int kern)
1582 {
1583         return 0;
1584 }
1585
1586 static inline int security_socket_post_create(struct socket *sock,
1587                                               int family,
1588                                               int type,
1589                                               int protocol, int kern)
1590 {
1591         return 0;
1592 }
1593
1594 static inline int security_socket_socketpair(struct socket *socka,
1595                                              struct socket *sockb)
1596 {
1597         return 0;
1598 }
1599
1600 static inline int security_socket_bind(struct socket *sock,
1601                                        struct sockaddr *address,
1602                                        int addrlen)
1603 {
1604         return 0;
1605 }
1606
1607 static inline int security_socket_connect(struct socket *sock,
1608                                           struct sockaddr *address,
1609                                           int addrlen)
1610 {
1611         return 0;
1612 }
1613
1614 static inline int security_socket_listen(struct socket *sock, int backlog)
1615 {
1616         return 0;
1617 }
1618
1619 static inline int security_socket_accept(struct socket *sock,
1620                                          struct socket *newsock)
1621 {
1622         return 0;
1623 }
1624
1625 static inline int security_socket_sendmsg(struct socket *sock,
1626                                           struct msghdr *msg, int size)
1627 {
1628         return 0;
1629 }
1630
1631 static inline int security_socket_recvmsg(struct socket *sock,
1632                                           struct msghdr *msg, int size,
1633                                           int flags)
1634 {
1635         return 0;
1636 }
1637
1638 static inline int security_socket_getsockname(struct socket *sock)
1639 {
1640         return 0;
1641 }
1642
1643 static inline int security_socket_getpeername(struct socket *sock)
1644 {
1645         return 0;
1646 }
1647
1648 static inline int security_socket_getsockopt(struct socket *sock,
1649                                              int level, int optname)
1650 {
1651         return 0;
1652 }
1653
1654 static inline int security_socket_setsockopt(struct socket *sock,
1655                                              int level, int optname)
1656 {
1657         return 0;
1658 }
1659
1660 static inline int security_socket_shutdown(struct socket *sock, int how)
1661 {
1662         return 0;
1663 }
1664 static inline int security_sock_rcv_skb(struct sock *sk,
1665                                         struct sk_buff *skb)
1666 {
1667         return 0;
1668 }
1669
1670 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1671                                                     int __user *optlen, unsigned len)
1672 {
1673         return -ENOPROTOOPT;
1674 }
1675
1676 static inline int security_socket_getpeersec_dgram(struct socket *sock,
1677                                                    struct sk_buff *skb,
1678                                                    struct lsmblob *blob)
1679 {
1680         return -ENOPROTOOPT;
1681 }
1682
1683 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1684 {
1685         return 0;
1686 }
1687
1688 static inline void security_sk_free(struct sock *sk)
1689 {
1690 }
1691
1692 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
1693 {
1694 }
1695
1696 static inline void security_sk_classify_flow(struct sock *sk,
1697                                              struct flowi_common *flic)
1698 {
1699 }
1700
1701 static inline void security_req_classify_flow(const struct request_sock *req,
1702                                               struct flowi_common *flic)
1703 {
1704 }
1705
1706 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
1707 {
1708 }
1709
1710 static inline int security_inet_conn_request(const struct sock *sk,
1711                         struct sk_buff *skb, struct request_sock *req)
1712 {
1713         return 0;
1714 }
1715
1716 static inline void security_inet_csk_clone(struct sock *newsk,
1717                         const struct request_sock *req)
1718 {
1719 }
1720
1721 static inline void security_inet_conn_established(struct sock *sk,
1722                         struct sk_buff *skb)
1723 {
1724 }
1725
1726 static inline int security_secmark_relabel_packet(struct lsmblob *blob)
1727 {
1728         return 0;
1729 }
1730
1731 static inline void security_secmark_refcount_inc(void)
1732 {
1733 }
1734
1735 static inline void security_secmark_refcount_dec(void)
1736 {
1737 }
1738
1739 static inline int security_tun_dev_alloc_security(void **security)
1740 {
1741         return 0;
1742 }
1743
1744 static inline void security_tun_dev_free_security(void *security)
1745 {
1746 }
1747
1748 static inline int security_tun_dev_create(void)
1749 {
1750         return 0;
1751 }
1752
1753 static inline int security_tun_dev_attach_queue(void *security)
1754 {
1755         return 0;
1756 }
1757
1758 static inline int security_tun_dev_attach(struct sock *sk, void *security)
1759 {
1760         return 0;
1761 }
1762
1763 static inline int security_tun_dev_open(void *security)
1764 {
1765         return 0;
1766 }
1767
1768 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep,
1769                                               struct sk_buff *skb)
1770 {
1771         return 0;
1772 }
1773
1774 static inline int security_sctp_bind_connect(struct sock *sk, int optname,
1775                                              struct sockaddr *address,
1776                                              int addrlen)
1777 {
1778         return 0;
1779 }
1780
1781 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep,
1782                                           struct sock *sk,
1783                                           struct sock *newsk)
1784 {
1785 }
1786 #endif  /* CONFIG_SECURITY_NETWORK */
1787
1788 #ifdef CONFIG_SECURITY_INFINIBAND
1789 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey);
1790 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num);
1791 int security_ib_alloc_security(void **sec);
1792 void security_ib_free_security(void *sec);
1793 #else   /* CONFIG_SECURITY_INFINIBAND */
1794 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
1795 {
1796         return 0;
1797 }
1798
1799 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
1800 {
1801         return 0;
1802 }
1803
1804 static inline int security_ib_alloc_security(void **sec)
1805 {
1806         return 0;
1807 }
1808
1809 static inline void security_ib_free_security(void *sec)
1810 {
1811 }
1812 #endif  /* CONFIG_SECURITY_INFINIBAND */
1813
1814 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1815
1816 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1817                                struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
1818 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
1819 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
1820 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
1821 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
1822 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1823                                       struct xfrm_sec_ctx *polsec, u32 secid);
1824 int security_xfrm_state_delete(struct xfrm_state *x);
1825 void security_xfrm_state_free(struct xfrm_state *x);
1826 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid);
1827 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1828                                        struct xfrm_policy *xp,
1829                                        const struct flowi_common *flic);
1830 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
1831 void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic);
1832
1833 #else   /* CONFIG_SECURITY_NETWORK_XFRM */
1834
1835 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1836                                              struct xfrm_user_sec_ctx *sec_ctx,
1837                                              gfp_t gfp)
1838 {
1839         return 0;
1840 }
1841
1842 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
1843 {
1844         return 0;
1845 }
1846
1847 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1848 {
1849 }
1850
1851 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1852 {
1853         return 0;
1854 }
1855
1856 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
1857                                         struct xfrm_user_sec_ctx *sec_ctx)
1858 {
1859         return 0;
1860 }
1861
1862 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1863                                         struct xfrm_sec_ctx *polsec, u32 secid)
1864 {
1865         return 0;
1866 }
1867
1868 static inline void security_xfrm_state_free(struct xfrm_state *x)
1869 {
1870 }
1871
1872 static inline int security_xfrm_state_delete(struct xfrm_state *x)
1873 {
1874         return 0;
1875 }
1876
1877 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid)
1878 {
1879         return 0;
1880 }
1881
1882 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1883                                                      struct xfrm_policy *xp,
1884                                                      const struct flowi_common *flic)
1885 {
1886         return 1;
1887 }
1888
1889 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1890 {
1891         return 0;
1892 }
1893
1894 static inline void security_skb_classify_flow(struct sk_buff *skb,
1895                                               struct flowi_common *flic)
1896 {
1897 }
1898
1899 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1900
1901 #ifdef CONFIG_SECURITY_PATH
1902 int security_path_unlink(const struct path *dir, struct dentry *dentry);
1903 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode);
1904 int security_path_rmdir(const struct path *dir, struct dentry *dentry);
1905 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
1906                         unsigned int dev);
1907 int security_path_truncate(const struct path *path);
1908 int security_path_symlink(const struct path *dir, struct dentry *dentry,
1909                           const char *old_name);
1910 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
1911                        struct dentry *new_dentry);
1912 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
1913                          const struct path *new_dir, struct dentry *new_dentry,
1914                          unsigned int flags);
1915 int security_path_chmod(const struct path *path, umode_t mode);
1916 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid);
1917 int security_path_chroot(const struct path *path);
1918 #else   /* CONFIG_SECURITY_PATH */
1919 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry)
1920 {
1921         return 0;
1922 }
1923
1924 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry,
1925                                       umode_t mode)
1926 {
1927         return 0;
1928 }
1929
1930 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry)
1931 {
1932         return 0;
1933 }
1934
1935 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry,
1936                                       umode_t mode, unsigned int dev)
1937 {
1938         return 0;
1939 }
1940
1941 static inline int security_path_truncate(const struct path *path)
1942 {
1943         return 0;
1944 }
1945
1946 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry,
1947                                         const char *old_name)
1948 {
1949         return 0;
1950 }
1951
1952 static inline int security_path_link(struct dentry *old_dentry,
1953                                      const struct path *new_dir,
1954                                      struct dentry *new_dentry)
1955 {
1956         return 0;
1957 }
1958
1959 static inline int security_path_rename(const struct path *old_dir,
1960                                        struct dentry *old_dentry,
1961                                        const struct path *new_dir,
1962                                        struct dentry *new_dentry,
1963                                        unsigned int flags)
1964 {
1965         return 0;
1966 }
1967
1968 static inline int security_path_chmod(const struct path *path, umode_t mode)
1969 {
1970         return 0;
1971 }
1972
1973 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
1974 {
1975         return 0;
1976 }
1977
1978 static inline int security_path_chroot(const struct path *path)
1979 {
1980         return 0;
1981 }
1982 #endif  /* CONFIG_SECURITY_PATH */
1983
1984 #ifdef CONFIG_KEYS
1985 #ifdef CONFIG_SECURITY
1986
1987 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
1988 void security_key_free(struct key *key);
1989 int security_key_permission(key_ref_t key_ref, const struct cred *cred,
1990                             enum key_need_perm need_perm);
1991 int security_key_getsecurity(struct key *key, char **_buffer);
1992
1993 #else
1994
1995 static inline int security_key_alloc(struct key *key,
1996                                      const struct cred *cred,
1997                                      unsigned long flags)
1998 {
1999         return 0;
2000 }
2001
2002 static inline void security_key_free(struct key *key)
2003 {
2004 }
2005
2006 static inline int security_key_permission(key_ref_t key_ref,
2007                                           const struct cred *cred,
2008                                           enum key_need_perm need_perm)
2009 {
2010         return 0;
2011 }
2012
2013 static inline int security_key_getsecurity(struct key *key, char **_buffer)
2014 {
2015         *_buffer = NULL;
2016         return 0;
2017 }
2018
2019 #endif
2020 #endif /* CONFIG_KEYS */
2021
2022 #ifdef CONFIG_AUDIT
2023 #ifdef CONFIG_SECURITY
2024 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
2025 int security_audit_rule_known(struct audit_krule *krule);
2026 int security_audit_rule_match(struct lsmblob *blob, u32 field, u32 op,
2027                               void **lsmrule);
2028 void security_audit_rule_free(void **lsmrule);
2029
2030 #else
2031
2032 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
2033                                            void **lsmrule)
2034 {
2035         return 0;
2036 }
2037
2038 static inline int security_audit_rule_known(struct audit_krule *krule)
2039 {
2040         return 0;
2041 }
2042
2043 static inline int security_audit_rule_match(struct lsmblob *blob, u32 field,
2044                                             u32 op, void **lsmrule)
2045 {
2046         return 0;
2047 }
2048
2049 static inline void security_audit_rule_free(void **lsmrule)
2050 { }
2051
2052 #endif /* CONFIG_SECURITY */
2053 #endif /* CONFIG_AUDIT */
2054
2055 #ifdef CONFIG_SECURITYFS
2056
2057 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
2058                                              struct dentry *parent, void *data,
2059                                              const struct file_operations *fops);
2060 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
2061 struct dentry *securityfs_create_symlink(const char *name,
2062                                          struct dentry *parent,
2063                                          const char *target,
2064                                          const struct inode_operations *iops);
2065 extern void securityfs_remove(struct dentry *dentry);
2066
2067 #else /* CONFIG_SECURITYFS */
2068
2069 static inline struct dentry *securityfs_create_dir(const char *name,
2070                                                    struct dentry *parent)
2071 {
2072         return ERR_PTR(-ENODEV);
2073 }
2074
2075 static inline struct dentry *securityfs_create_file(const char *name,
2076                                                     umode_t mode,
2077                                                     struct dentry *parent,
2078                                                     void *data,
2079                                                     const struct file_operations *fops)
2080 {
2081         return ERR_PTR(-ENODEV);
2082 }
2083
2084 static inline struct dentry *securityfs_create_symlink(const char *name,
2085                                         struct dentry *parent,
2086                                         const char *target,
2087                                         const struct inode_operations *iops)
2088 {
2089         return ERR_PTR(-ENODEV);
2090 }
2091
2092 static inline void securityfs_remove(struct dentry *dentry)
2093 {}
2094
2095 #endif
2096
2097 #ifdef CONFIG_BPF_SYSCALL
2098 union bpf_attr;
2099 struct bpf_map;
2100 struct bpf_prog;
2101 struct bpf_prog_aux;
2102 #ifdef CONFIG_SECURITY
2103 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size);
2104 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode);
2105 extern int security_bpf_prog(struct bpf_prog *prog);
2106 extern int security_bpf_map_alloc(struct bpf_map *map);
2107 extern void security_bpf_map_free(struct bpf_map *map);
2108 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux);
2109 extern void security_bpf_prog_free(struct bpf_prog_aux *aux);
2110 #else
2111 static inline int security_bpf(int cmd, union bpf_attr *attr,
2112                                              unsigned int size)
2113 {
2114         return 0;
2115 }
2116
2117 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode)
2118 {
2119         return 0;
2120 }
2121
2122 static inline int security_bpf_prog(struct bpf_prog *prog)
2123 {
2124         return 0;
2125 }
2126
2127 static inline int security_bpf_map_alloc(struct bpf_map *map)
2128 {
2129         return 0;
2130 }
2131
2132 static inline void security_bpf_map_free(struct bpf_map *map)
2133 { }
2134
2135 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
2136 {
2137         return 0;
2138 }
2139
2140 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux)
2141 { }
2142 #endif /* CONFIG_SECURITY */
2143 #endif /* CONFIG_BPF_SYSCALL */
2144
2145 #ifdef CONFIG_PERF_EVENTS
2146 struct perf_event_attr;
2147 struct perf_event;
2148
2149 #ifdef CONFIG_SECURITY
2150 extern int security_perf_event_open(struct perf_event_attr *attr, int type);
2151 extern int security_perf_event_alloc(struct perf_event *event);
2152 extern void security_perf_event_free(struct perf_event *event);
2153 extern int security_perf_event_read(struct perf_event *event);
2154 extern int security_perf_event_write(struct perf_event *event);
2155 #else
2156 static inline int security_perf_event_open(struct perf_event_attr *attr,
2157                                            int type)
2158 {
2159         return 0;
2160 }
2161
2162 static inline int security_perf_event_alloc(struct perf_event *event)
2163 {
2164         return 0;
2165 }
2166
2167 static inline void security_perf_event_free(struct perf_event *event)
2168 {
2169 }
2170
2171 static inline int security_perf_event_read(struct perf_event *event)
2172 {
2173         return 0;
2174 }
2175
2176 static inline int security_perf_event_write(struct perf_event *event)
2177 {
2178         return 0;
2179 }
2180 #endif /* CONFIG_SECURITY */
2181 #endif /* CONFIG_PERF_EVENTS */
2182
2183 #endif /* ! __LINUX_SECURITY_H */