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