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