include/linux/security.h

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