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