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