security/capability.c

   1 /*
   2  *  Capabilities Linux Security Module
   3  *
   4  *  This is the default security module in case no other module is loaded.
   5  *
   6  *      This program is free software; you can redistribute it and/or modify
   7  *      it under the terms of the GNU General Public License as published by
   8  *      the Free Software Foundation; either version 2 of the License, or
   9  *      (at your option) any later version.
  10  *
  11  */
  12
  13 #include <linux/security.h>
  14
  15 static int cap_binder_set_context_mgr(struct task_struct *mgr)
  16 {
  17         return 0;
  18 }
  19
  20 static int cap_binder_transaction(struct task_struct *from,
  21                                   struct task_struct *to)
  22 {
  23         return 0;
  24 }
  25
  26 static int cap_binder_transfer_binder(struct task_struct *from,
  27                                       struct task_struct *to)
  28 {
  29         return 0;
  30 }
  31
  32 static int cap_binder_transfer_file(struct task_struct *from,
  33                                     struct task_struct *to, struct file *file)
  34 {
  35         return 0;
  36 }
  37
  38 static int cap_syslog(int type)
  39 {
  40         return 0;
  41 }
  42
  43 static int cap_quotactl(int cmds, int type, int id, struct super_block *sb)
  44 {
  45         return 0;
  46 }
  47
  48 static int cap_quota_on(struct dentry *dentry)
  49 {
  50         return 0;
  51 }
  52
  53 static int cap_bprm_check_security(struct linux_binprm *bprm)
  54 {
  55         return 0;
  56 }
  57
  58 static void cap_bprm_committing_creds(struct linux_binprm *bprm)
  59 {
  60 }
  61
  62 static void cap_bprm_committed_creds(struct linux_binprm *bprm)
  63 {
  64 }
  65
  66 static int cap_sb_alloc_security(struct super_block *sb)
  67 {
  68         return 0;
  69 }
  70
  71 static void cap_sb_free_security(struct super_block *sb)
  72 {
  73 }
  74
  75 static int cap_sb_copy_data(char *orig, char *copy)
  76 {
  77         return 0;
  78 }
  79
  80 static int cap_sb_remount(struct super_block *sb, void *data)
  81 {
  82         return 0;
  83 }
  84
  85 static int cap_sb_kern_mount(struct super_block *sb, int flags, void *data)
  86 {
  87         return 0;
  88 }
  89
  90 static int cap_sb_show_options(struct seq_file *m, struct super_block *sb)
  91 {
  92         return 0;
  93 }
  94
  95 static int cap_sb_statfs(struct dentry *dentry)
  96 {
  97         return 0;
  98 }
  99
 100 static int cap_sb_mount(const char *dev_name, struct path *path,
 101                         const char *type, unsigned long flags, void *data)
 102 {
 103         return 0;
 104 }
 105
 106 static int cap_sb_umount(struct vfsmount *mnt, int flags)
 107 {
 108         return 0;
 109 }
 110
 111 static int cap_sb_pivotroot(struct path *old_path, struct path *new_path)
 112 {
 113         return 0;
 114 }
 115
 116 static int cap_sb_set_mnt_opts(struct super_block *sb,
 117                                struct security_mnt_opts *opts,
 118                                unsigned long kern_flags,
 119                                unsigned long *set_kern_flags)
 120
 121 {
 122         if (unlikely(opts->num_mnt_opts))
 123                 return -EOPNOTSUPP;
 124         return 0;
 125 }
 126
 127 static int cap_sb_clone_mnt_opts(const struct super_block *oldsb,
 128                                   struct super_block *newsb)
 129 {
 130         return 0;
 131 }
 132
 133 static int cap_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
 134 {
 135         return 0;
 136 }
 137
 138 static int cap_dentry_init_security(struct dentry *dentry, int mode,
 139                                         struct qstr *name, void **ctx,
 140                                         u32 *ctxlen)
 141 {
 142         return -EOPNOTSUPP;
 143 }
 144
 145 static int cap_inode_alloc_security(struct inode *inode)
 146 {
 147         return 0;
 148 }
 149
 150 static void cap_inode_free_security(struct inode *inode)
 151 {
 152 }
 153
 154 static int cap_inode_init_security(struct inode *inode, struct inode *dir,
 155                                    const struct qstr *qstr, const char **name,
 156                                    void **value, size_t *len)
 157 {
 158         return -EOPNOTSUPP;
 159 }
 160
 161 static int cap_inode_create(struct inode *inode, struct dentry *dentry,
 162                             umode_t mask)
 163 {
 164         return 0;
 165 }
 166
 167 static int cap_inode_link(struct dentry *old_dentry, struct inode *inode,
 168                           struct dentry *new_dentry)
 169 {
 170         return 0;
 171 }
 172
 173 static int cap_inode_unlink(struct inode *inode, struct dentry *dentry)
 174 {
 175         return 0;
 176 }
 177
 178 static int cap_inode_symlink(struct inode *inode, struct dentry *dentry,
 179                              const char *name)
 180 {
 181         return 0;
 182 }
 183
 184 static int cap_inode_mkdir(struct inode *inode, struct dentry *dentry,
 185                            umode_t mask)
 186 {
 187         return 0;
 188 }
 189
 190 static int cap_inode_rmdir(struct inode *inode, struct dentry *dentry)
 191 {
 192         return 0;
 193 }
 194
 195 static int cap_inode_mknod(struct inode *inode, struct dentry *dentry,
 196                            umode_t mode, dev_t dev)
 197 {
 198         return 0;
 199 }
 200
 201 static int cap_inode_rename(struct inode *old_inode, struct dentry *old_dentry,
 202                             struct inode *new_inode, struct dentry *new_dentry)
 203 {
 204         return 0;
 205 }
 206
 207 static int cap_inode_readlink(struct dentry *dentry)
 208 {
 209         return 0;
 210 }
 211
 212 static int cap_inode_follow_link(struct dentry *dentry,
 213                                  struct nameidata *nameidata)
 214 {
 215         return 0;
 216 }
 217
 218 static int cap_inode_permission(struct inode *inode, int mask)
 219 {
 220         return 0;
 221 }
 222
 223 static int cap_inode_setattr(struct dentry *dentry, struct iattr *iattr)
 224 {
 225         return 0;
 226 }
 227
 228 static int cap_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
 229 {
 230         return 0;
 231 }
 232
 233 static void cap_inode_post_setxattr(struct dentry *dentry, const char *name,
 234                                     const void *value, size_t size, int flags)
 235 {
 236 }
 237
 238 static int cap_inode_getxattr(struct dentry *dentry, const char *name)
 239 {
 240         return 0;
 241 }
 242
 243 static int cap_inode_listxattr(struct dentry *dentry)
 244 {
 245         return 0;
 246 }
 247
 248 static int cap_inode_getsecurity(const struct inode *inode, const char *name,
 249                                  void **buffer, bool alloc)
 250 {
 251         return -EOPNOTSUPP;
 252 }
 253
 254 static int cap_inode_setsecurity(struct inode *inode, const char *name,
 255                                  const void *value, size_t size, int flags)
 256 {
 257         return -EOPNOTSUPP;
 258 }
 259
 260 static int cap_inode_listsecurity(struct inode *inode, char *buffer,
 261                                   size_t buffer_size)
 262 {
 263         return 0;
 264 }
 265
 266 static void cap_inode_getsecid(const struct inode *inode, u32 *secid)
 267 {
 268         *secid = 0;
 269 }
 270
 271 #ifdef CONFIG_SECURITY_PATH
 272 static int cap_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode,
 273                           unsigned int dev)
 274 {
 275         return 0;
 276 }
 277
 278 static int cap_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode)
 279 {
 280         return 0;
 281 }
 282
 283 static int cap_path_rmdir(struct path *dir, struct dentry *dentry)
 284 {
 285         return 0;
 286 }
 287
 288 static int cap_path_unlink(struct path *dir, struct dentry *dentry)
 289 {
 290         return 0;
 291 }
 292
 293 static int cap_path_symlink(struct path *dir, struct dentry *dentry,
 294                             const char *old_name)
 295 {
 296         return 0;
 297 }
 298
 299 static int cap_path_link(struct dentry *old_dentry, struct path *new_dir,
 300                          struct dentry *new_dentry)
 301 {
 302         return 0;
 303 }
 304
 305 static int cap_path_rename(struct path *old_path, struct dentry *old_dentry,
 306                            struct path *new_path, struct dentry *new_dentry)
 307 {
 308         return 0;
 309 }
 310
 311 static int cap_path_truncate(struct path *path)
 312 {
 313         return 0;
 314 }
 315
 316 static int cap_path_chmod(struct path *path, umode_t mode)
 317 {
 318         return 0;
 319 }
 320
 321 static int cap_path_chown(struct path *path, kuid_t uid, kgid_t gid)
 322 {
 323         return 0;
 324 }
 325
 326 static int cap_path_chroot(struct path *root)
 327 {
 328         return 0;
 329 }
 330 #endif
 331
 332 static int cap_file_permission(struct file *file, int mask)
 333 {
 334         return 0;
 335 }
 336
 337 static int cap_file_alloc_security(struct file *file)
 338 {
 339         return 0;
 340 }
 341
 342 static void cap_file_free_security(struct file *file)
 343 {
 344 }
 345
 346 static int cap_file_ioctl(struct file *file, unsigned int command,
 347                           unsigned long arg)
 348 {
 349         return 0;
 350 }
 351
 352 static int cap_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 353                              unsigned long prot)
 354 {
 355         return 0;
 356 }
 357
 358 static int cap_file_lock(struct file *file, unsigned int cmd)
 359 {
 360         return 0;
 361 }
 362
 363 static int cap_file_fcntl(struct file *file, unsigned int cmd,
 364                           unsigned long arg)
 365 {
 366         return 0;
 367 }
 368
 369 static void cap_file_set_fowner(struct file *file)
 370 {
 371         return;
 372 }
 373
 374 static int cap_file_send_sigiotask(struct task_struct *tsk,
 375                                    struct fown_struct *fown, int sig)
 376 {
 377         return 0;
 378 }
 379
 380 static int cap_file_receive(struct file *file)
 381 {
 382         return 0;
 383 }
 384
 385 static int cap_file_open(struct file *file, const struct cred *cred)
 386 {
 387         return 0;
 388 }
 389
 390 static int cap_task_create(unsigned long clone_flags)
 391 {
 392         return 0;
 393 }
 394
 395 static void cap_task_free(struct task_struct *task)
 396 {
 397 }
 398
 399 static int cap_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 400 {
 401         return 0;
 402 }
 403
 404 static void cap_cred_free(struct cred *cred)
 405 {
 406 }
 407
 408 static int cap_cred_prepare(struct cred *new, const struct cred *old, gfp_t gfp)
 409 {
 410         return 0;
 411 }
 412
 413 static void cap_cred_transfer(struct cred *new, const struct cred *old)
 414 {
 415 }
 416
 417 static int cap_kernel_act_as(struct cred *new, u32 secid)
 418 {
 419         return 0;
 420 }
 421
 422 static int cap_kernel_create_files_as(struct cred *new, struct inode *inode)
 423 {
 424         return 0;
 425 }
 426
 427 static int cap_kernel_fw_from_file(struct file *file, char *buf, size_t size)
 428 {
 429         return 0;
 430 }
 431
 432 static int cap_kernel_module_request(char *kmod_name)
 433 {
 434         return 0;
 435 }
 436
 437 static int cap_kernel_module_from_file(struct file *file)
 438 {
 439         return 0;
 440 }
 441
 442 static int cap_task_setpgid(struct task_struct *p, pid_t pgid)
 443 {
 444         return 0;
 445 }
 446
 447 static int cap_task_getpgid(struct task_struct *p)
 448 {
 449         return 0;
 450 }
 451
 452 static int cap_task_getsid(struct task_struct *p)
 453 {
 454         return 0;
 455 }
 456
 457 static void cap_task_getsecid(struct task_struct *p, u32 *secid)
 458 {
 459         *secid = 0;
 460 }
 461
 462 static int cap_task_getioprio(struct task_struct *p)
 463 {
 464         return 0;
 465 }
 466
 467 static int cap_task_setrlimit(struct task_struct *p, unsigned int resource,
 468                 struct rlimit *new_rlim)
 469 {
 470         return 0;
 471 }
 472
 473 static int cap_task_getscheduler(struct task_struct *p)
 474 {
 475         return 0;
 476 }
 477
 478 static int cap_task_movememory(struct task_struct *p)
 479 {
 480         return 0;
 481 }
 482
 483 static int cap_task_wait(struct task_struct *p)
 484 {
 485         return 0;
 486 }
 487
 488 static int cap_task_kill(struct task_struct *p, struct siginfo *info,
 489                          int sig, u32 secid)
 490 {
 491         return 0;
 492 }
 493
 494 static void cap_task_to_inode(struct task_struct *p, struct inode *inode)
 495 {
 496 }
 497
 498 static int cap_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
 499 {
 500         return 0;
 501 }
 502
 503 static void cap_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
 504 {
 505         *secid = 0;
 506 }
 507
 508 static int cap_msg_msg_alloc_security(struct msg_msg *msg)
 509 {
 510         return 0;
 511 }
 512
 513 static void cap_msg_msg_free_security(struct msg_msg *msg)
 514 {
 515 }
 516
 517 static int cap_msg_queue_alloc_security(struct msg_queue *msq)
 518 {
 519         return 0;
 520 }
 521
 522 static void cap_msg_queue_free_security(struct msg_queue *msq)
 523 {
 524 }
 525
 526 static int cap_msg_queue_associate(struct msg_queue *msq, int msqflg)
 527 {
 528         return 0;
 529 }
 530
 531 static int cap_msg_queue_msgctl(struct msg_queue *msq, int cmd)
 532 {
 533         return 0;
 534 }
 535
 536 static int cap_msg_queue_msgsnd(struct msg_queue *msq, struct msg_msg *msg,
 537                                 int msgflg)
 538 {
 539         return 0;
 540 }
 541
 542 static int cap_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
 543                                 struct task_struct *target, long type, int mode)
 544 {
 545         return 0;
 546 }
 547
 548 static int cap_shm_alloc_security(struct shmid_kernel *shp)
 549 {
 550         return 0;
 551 }
 552
 553 static void cap_shm_free_security(struct shmid_kernel *shp)
 554 {
 555 }
 556
 557 static int cap_shm_associate(struct shmid_kernel *shp, int shmflg)
 558 {
 559         return 0;
 560 }
 561
 562 static int cap_shm_shmctl(struct shmid_kernel *shp, int cmd)
 563 {
 564         return 0;
 565 }
 566
 567 static int cap_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr,
 568                          int shmflg)
 569 {
 570         return 0;
 571 }
 572
 573 static int cap_sem_alloc_security(struct sem_array *sma)
 574 {
 575         return 0;
 576 }
 577
 578 static void cap_sem_free_security(struct sem_array *sma)
 579 {
 580 }
 581
 582 static int cap_sem_associate(struct sem_array *sma, int semflg)
 583 {
 584         return 0;
 585 }
 586
 587 static int cap_sem_semctl(struct sem_array *sma, int cmd)
 588 {
 589         return 0;
 590 }
 591
 592 static int cap_sem_semop(struct sem_array *sma, struct sembuf *sops,
 593                          unsigned nsops, int alter)
 594 {
 595         return 0;
 596 }
 597
 598 #ifdef CONFIG_SECURITY_NETWORK
 599 static int cap_unix_stream_connect(struct sock *sock, struct sock *other,
 600                                    struct sock *newsk)
 601 {
 602         return 0;
 603 }
 604
 605 static int cap_unix_may_send(struct socket *sock, struct socket *other)
 606 {
 607         return 0;
 608 }
 609
 610 static int cap_socket_create(int family, int type, int protocol, int kern)
 611 {
 612         return 0;
 613 }
 614
 615 static int cap_socket_post_create(struct socket *sock, int family, int type,
 616                                   int protocol, int kern)
 617 {
 618         return 0;
 619 }
 620
 621 static int cap_socket_bind(struct socket *sock, struct sockaddr *address,
 622                            int addrlen)
 623 {
 624         return 0;
 625 }
 626
 627 static int cap_socket_connect(struct socket *sock, struct sockaddr *address,
 628                               int addrlen)
 629 {
 630         return 0;
 631 }
 632
 633 static int cap_socket_listen(struct socket *sock, int backlog)
 634 {
 635         return 0;
 636 }
 637
 638 static int cap_socket_accept(struct socket *sock, struct socket *newsock)
 639 {
 640         return 0;
 641 }
 642
 643 static int cap_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
 644 {
 645         return 0;
 646 }
 647
 648 static int cap_socket_recvmsg(struct socket *sock, struct msghdr *msg,
 649                               int size, int flags)
 650 {
 651         return 0;
 652 }
 653
 654 static int cap_socket_getsockname(struct socket *sock)
 655 {
 656         return 0;
 657 }
 658
 659 static int cap_socket_getpeername(struct socket *sock)
 660 {
 661         return 0;
 662 }
 663
 664 static int cap_socket_setsockopt(struct socket *sock, int level, int optname)
 665 {
 666         return 0;
 667 }
 668
 669 static int cap_socket_getsockopt(struct socket *sock, int level, int optname)
 670 {
 671         return 0;
 672 }
 673
 674 static int cap_socket_shutdown(struct socket *sock, int how)
 675 {
 676         return 0;
 677 }
 678
 679 static int cap_socket_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
 680 {
 681         return 0;
 682 }
 683
 684 static int cap_socket_getpeersec_stream(struct socket *sock,
 685                                         char __user *optval,
 686                                         int __user *optlen, unsigned len)
 687 {
 688         return -ENOPROTOOPT;
 689 }
 690
 691 static int cap_socket_getpeersec_dgram(struct socket *sock,
 692                                        struct sk_buff *skb, u32 *secid)
 693 {
 694         return -ENOPROTOOPT;
 695 }
 696
 697 static int cap_sk_alloc_security(struct sock *sk, int family, gfp_t priority)
 698 {
 699         return 0;
 700 }
 701
 702 static void cap_sk_free_security(struct sock *sk)
 703 {
 704 }
 705
 706 static void cap_sk_clone_security(const struct sock *sk, struct sock *newsk)
 707 {
 708 }
 709
 710 static void cap_sk_getsecid(struct sock *sk, u32 *secid)
 711 {
 712 }
 713
 714 static void cap_sock_graft(struct sock *sk, struct socket *parent)
 715 {
 716 }
 717
 718 static int cap_inet_conn_request(struct sock *sk, struct sk_buff *skb,
 719                                  struct request_sock *req)
 720 {
 721         return 0;
 722 }
 723
 724 static void cap_inet_csk_clone(struct sock *newsk,
 725                                const struct request_sock *req)
 726 {
 727 }
 728
 729 static void cap_inet_conn_established(struct sock *sk, struct sk_buff *skb)
 730 {
 731 }
 732
 733 static int cap_secmark_relabel_packet(u32 secid)
 734 {
 735         return 0;
 736 }
 737
 738 static void cap_secmark_refcount_inc(void)
 739 {
 740 }
 741
 742 static void cap_secmark_refcount_dec(void)
 743 {
 744 }
 745
 746 static void cap_req_classify_flow(const struct request_sock *req,
 747                                   struct flowi *fl)
 748 {
 749 }
 750
 751 static int cap_tun_dev_alloc_security(void **security)
 752 {
 753         return 0;
 754 }
 755
 756 static void cap_tun_dev_free_security(void *security)
 757 {
 758 }
 759
 760 static int cap_tun_dev_create(void)
 761 {
 762         return 0;
 763 }
 764
 765 static int cap_tun_dev_attach_queue(void *security)
 766 {
 767         return 0;
 768 }
 769
 770 static int cap_tun_dev_attach(struct sock *sk, void *security)
 771 {
 772         return 0;
 773 }
 774
 775 static int cap_tun_dev_open(void *security)
 776 {
 777         return 0;
 778 }
 779
 780 static void cap_skb_owned_by(struct sk_buff *skb, struct sock *sk)
 781 {
 782 }
 783
 784 #endif  /* CONFIG_SECURITY_NETWORK */
 785
 786 #ifdef CONFIG_SECURITY_NETWORK_XFRM
 787 static int cap_xfrm_policy_alloc_security(struct xfrm_sec_ctx **ctxp,
 788                                           struct xfrm_user_sec_ctx *sec_ctx,
 789                                           gfp_t gfp)
 790 {
 791         return 0;
 792 }
 793
 794 static int cap_xfrm_policy_clone_security(struct xfrm_sec_ctx *old_ctx,
 795                                           struct xfrm_sec_ctx **new_ctxp)
 796 {
 797         return 0;
 798 }
 799
 800 static void cap_xfrm_policy_free_security(struct xfrm_sec_ctx *ctx)
 801 {
 802 }
 803
 804 static int cap_xfrm_policy_delete_security(struct xfrm_sec_ctx *ctx)
 805 {
 806         return 0;
 807 }
 808
 809 static int cap_xfrm_state_alloc(struct xfrm_state *x,
 810                                 struct xfrm_user_sec_ctx *sec_ctx)
 811 {
 812         return 0;
 813 }
 814
 815 static int cap_xfrm_state_alloc_acquire(struct xfrm_state *x,
 816                                         struct xfrm_sec_ctx *polsec,
 817                                         u32 secid)
 818 {
 819         return 0;
 820 }
 821
 822 static void cap_xfrm_state_free_security(struct xfrm_state *x)
 823 {
 824 }
 825
 826 static int cap_xfrm_state_delete_security(struct xfrm_state *x)
 827 {
 828         return 0;
 829 }
 830
 831 static int cap_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 sk_sid, u8 dir)
 832 {
 833         return 0;
 834 }
 835
 836 static int cap_xfrm_state_pol_flow_match(struct xfrm_state *x,
 837                                          struct xfrm_policy *xp,
 838                                          const struct flowi *fl)
 839 {
 840         return 1;
 841 }
 842
 843 static int cap_xfrm_decode_session(struct sk_buff *skb, u32 *fl, int ckall)
 844 {
 845         return 0;
 846 }
 847
 848 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
 849 static void cap_d_instantiate(struct dentry *dentry, struct inode *inode)
 850 {
 851 }
 852
 853 static int cap_getprocattr(struct task_struct *p, char *name, char **value)
 854 {
 855         return -EINVAL;
 856 }
 857
 858 static int cap_setprocattr(struct task_struct *p, char *name, void *value,
 859                            size_t size)
 860 {
 861         return -EINVAL;
 862 }
 863
 864 static int cap_ismaclabel(const char *name)
 865 {
 866         return 0;
 867 }
 868
 869 static int cap_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
 870 {
 871         return -EOPNOTSUPP;
 872 }
 873
 874 static int cap_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
 875 {
 876         *secid = 0;
 877         return 0;
 878 }
 879
 880 static void cap_release_secctx(char *secdata, u32 seclen)
 881 {
 882 }
 883
 884 static int cap_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
 885 {
 886         return 0;
 887 }
 888
 889 static int cap_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
 890 {
 891         return 0;
 892 }
 893
 894 static int cap_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
 895 {
 896         return -EOPNOTSUPP;
 897 }
 898 #ifdef CONFIG_KEYS
 899 static int cap_key_alloc(struct key *key, const struct cred *cred,
 900                          unsigned long flags)
 901 {
 902         return 0;
 903 }
 904
 905 static void cap_key_free(struct key *key)
 906 {
 907 }
 908
 909 static int cap_key_permission(key_ref_t key_ref, const struct cred *cred,
 910                               unsigned perm)
 911 {
 912         return 0;
 913 }
 914
 915 static int cap_key_getsecurity(struct key *key, char **_buffer)
 916 {
 917         *_buffer = NULL;
 918         return 0;
 919 }
 920
 921 #endif /* CONFIG_KEYS */
 922
 923 #ifdef CONFIG_AUDIT
 924 static int cap_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
 925 {
 926         return 0;
 927 }
 928
 929 static int cap_audit_rule_known(struct audit_krule *krule)
 930 {
 931         return 0;
 932 }
 933
 934 static int cap_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
 935                                 struct audit_context *actx)
 936 {
 937         return 0;
 938 }
 939
 940 static void cap_audit_rule_free(void *lsmrule)
 941 {
 942 }
 943 #endif /* CONFIG_AUDIT */
 944
 945 #define set_to_cap_if_null(ops, function)                               \
 946         do {                                                            \
 947                 if (!ops->function) {                                   \
 948                         ops->function = cap_##function;                 \
 949                         pr_debug("Had to override the " #function       \
 950                                  " security operation with the default.\n");\
 951                         }                                               \
 952         } while (0)
 953
 954 void __init security_fixup_ops(struct security_operations *ops)
 955 {
 956         set_to_cap_if_null(ops, binder_set_context_mgr);
 957         set_to_cap_if_null(ops, binder_transaction);
 958         set_to_cap_if_null(ops, binder_transfer_binder);
 959         set_to_cap_if_null(ops, binder_transfer_file);
 960         set_to_cap_if_null(ops, ptrace_access_check);
 961         set_to_cap_if_null(ops, ptrace_traceme);
 962         set_to_cap_if_null(ops, capget);
 963         set_to_cap_if_null(ops, capset);
 964         set_to_cap_if_null(ops, capable);
 965         set_to_cap_if_null(ops, quotactl);
 966         set_to_cap_if_null(ops, quota_on);
 967         set_to_cap_if_null(ops, syslog);
 968         set_to_cap_if_null(ops, settime);
 969         set_to_cap_if_null(ops, vm_enough_memory);
 970         set_to_cap_if_null(ops, bprm_set_creds);
 971         set_to_cap_if_null(ops, bprm_committing_creds);
 972         set_to_cap_if_null(ops, bprm_committed_creds);
 973         set_to_cap_if_null(ops, bprm_check_security);
 974         set_to_cap_if_null(ops, bprm_secureexec);
 975         set_to_cap_if_null(ops, sb_alloc_security);
 976         set_to_cap_if_null(ops, sb_free_security);
 977         set_to_cap_if_null(ops, sb_copy_data);
 978         set_to_cap_if_null(ops, sb_remount);
 979         set_to_cap_if_null(ops, sb_kern_mount);
 980         set_to_cap_if_null(ops, sb_show_options);
 981         set_to_cap_if_null(ops, sb_statfs);
 982         set_to_cap_if_null(ops, sb_mount);
 983         set_to_cap_if_null(ops, sb_umount);
 984         set_to_cap_if_null(ops, sb_pivotroot);
 985         set_to_cap_if_null(ops, sb_set_mnt_opts);
 986         set_to_cap_if_null(ops, sb_clone_mnt_opts);
 987         set_to_cap_if_null(ops, sb_parse_opts_str);
 988         set_to_cap_if_null(ops, dentry_init_security);
 989         set_to_cap_if_null(ops, inode_alloc_security);
 990         set_to_cap_if_null(ops, inode_free_security);
 991         set_to_cap_if_null(ops, inode_init_security);
 992         set_to_cap_if_null(ops, inode_create);
 993         set_to_cap_if_null(ops, inode_link);
 994         set_to_cap_if_null(ops, inode_unlink);
 995         set_to_cap_if_null(ops, inode_symlink);
 996         set_to_cap_if_null(ops, inode_mkdir);
 997         set_to_cap_if_null(ops, inode_rmdir);
 998         set_to_cap_if_null(ops, inode_mknod);
 999         set_to_cap_if_null(ops, inode_rename);
1000         set_to_cap_if_null(ops, inode_readlink);
1001         set_to_cap_if_null(ops, inode_follow_link);
1002         set_to_cap_if_null(ops, inode_permission);
1003         set_to_cap_if_null(ops, inode_setattr);
1004         set_to_cap_if_null(ops, inode_getattr);
1005         set_to_cap_if_null(ops, inode_setxattr);
1006         set_to_cap_if_null(ops, inode_post_setxattr);
1007         set_to_cap_if_null(ops, inode_getxattr);
1008         set_to_cap_if_null(ops, inode_listxattr);
1009         set_to_cap_if_null(ops, inode_removexattr);
1010         set_to_cap_if_null(ops, inode_need_killpriv);
1011         set_to_cap_if_null(ops, inode_killpriv);
1012         set_to_cap_if_null(ops, inode_getsecurity);
1013         set_to_cap_if_null(ops, inode_setsecurity);
1014         set_to_cap_if_null(ops, inode_listsecurity);
1015         set_to_cap_if_null(ops, inode_getsecid);
1016 #ifdef CONFIG_SECURITY_PATH
1017         set_to_cap_if_null(ops, path_mknod);
1018         set_to_cap_if_null(ops, path_mkdir);
1019         set_to_cap_if_null(ops, path_rmdir);
1020         set_to_cap_if_null(ops, path_unlink);
1021         set_to_cap_if_null(ops, path_symlink);
1022         set_to_cap_if_null(ops, path_link);
1023         set_to_cap_if_null(ops, path_rename);
1024         set_to_cap_if_null(ops, path_truncate);
1025         set_to_cap_if_null(ops, path_chmod);
1026         set_to_cap_if_null(ops, path_chown);
1027         set_to_cap_if_null(ops, path_chroot);
1028 #endif
1029         set_to_cap_if_null(ops, file_permission);
1030         set_to_cap_if_null(ops, file_alloc_security);
1031         set_to_cap_if_null(ops, file_free_security);
1032         set_to_cap_if_null(ops, file_ioctl);
1033         set_to_cap_if_null(ops, mmap_addr);
1034         set_to_cap_if_null(ops, mmap_file);
1035         set_to_cap_if_null(ops, file_mprotect);
1036         set_to_cap_if_null(ops, file_lock);
1037         set_to_cap_if_null(ops, file_fcntl);
1038         set_to_cap_if_null(ops, file_set_fowner);
1039         set_to_cap_if_null(ops, file_send_sigiotask);
1040         set_to_cap_if_null(ops, file_receive);
1041         set_to_cap_if_null(ops, file_open);
1042         set_to_cap_if_null(ops, task_create);
1043         set_to_cap_if_null(ops, task_free);
1044         set_to_cap_if_null(ops, cred_alloc_blank);
1045         set_to_cap_if_null(ops, cred_free);
1046         set_to_cap_if_null(ops, cred_prepare);
1047         set_to_cap_if_null(ops, cred_transfer);
1048         set_to_cap_if_null(ops, kernel_act_as);
1049         set_to_cap_if_null(ops, kernel_create_files_as);
1050         set_to_cap_if_null(ops, kernel_fw_from_file);
1051         set_to_cap_if_null(ops, kernel_module_request);
1052         set_to_cap_if_null(ops, kernel_module_from_file);
1053         set_to_cap_if_null(ops, task_fix_setuid);
1054         set_to_cap_if_null(ops, task_setpgid);
1055         set_to_cap_if_null(ops, task_getpgid);
1056         set_to_cap_if_null(ops, task_getsid);
1057         set_to_cap_if_null(ops, task_getsecid);
1058         set_to_cap_if_null(ops, task_setnice);
1059         set_to_cap_if_null(ops, task_setioprio);
1060         set_to_cap_if_null(ops, task_getioprio);
1061         set_to_cap_if_null(ops, task_setrlimit);
1062         set_to_cap_if_null(ops, task_setscheduler);
1063         set_to_cap_if_null(ops, task_getscheduler);
1064         set_to_cap_if_null(ops, task_movememory);
1065         set_to_cap_if_null(ops, task_wait);
1066         set_to_cap_if_null(ops, task_kill);
1067         set_to_cap_if_null(ops, task_prctl);
1068         set_to_cap_if_null(ops, task_to_inode);
1069         set_to_cap_if_null(ops, ipc_permission);
1070         set_to_cap_if_null(ops, ipc_getsecid);
1071         set_to_cap_if_null(ops, msg_msg_alloc_security);
1072         set_to_cap_if_null(ops, msg_msg_free_security);
1073         set_to_cap_if_null(ops, msg_queue_alloc_security);
1074         set_to_cap_if_null(ops, msg_queue_free_security);
1075         set_to_cap_if_null(ops, msg_queue_associate);
1076         set_to_cap_if_null(ops, msg_queue_msgctl);
1077         set_to_cap_if_null(ops, msg_queue_msgsnd);
1078         set_to_cap_if_null(ops, msg_queue_msgrcv);
1079         set_to_cap_if_null(ops, shm_alloc_security);
1080         set_to_cap_if_null(ops, shm_free_security);
1081         set_to_cap_if_null(ops, shm_associate);
1082         set_to_cap_if_null(ops, shm_shmctl);
1083         set_to_cap_if_null(ops, shm_shmat);
1084         set_to_cap_if_null(ops, sem_alloc_security);
1085         set_to_cap_if_null(ops, sem_free_security);
1086         set_to_cap_if_null(ops, sem_associate);
1087         set_to_cap_if_null(ops, sem_semctl);
1088         set_to_cap_if_null(ops, sem_semop);
1089         set_to_cap_if_null(ops, netlink_send);
1090         set_to_cap_if_null(ops, d_instantiate);
1091         set_to_cap_if_null(ops, getprocattr);
1092         set_to_cap_if_null(ops, setprocattr);
1093         set_to_cap_if_null(ops, ismaclabel);
1094         set_to_cap_if_null(ops, secid_to_secctx);
1095         set_to_cap_if_null(ops, secctx_to_secid);
1096         set_to_cap_if_null(ops, release_secctx);
1097         set_to_cap_if_null(ops, inode_notifysecctx);
1098         set_to_cap_if_null(ops, inode_setsecctx);
1099         set_to_cap_if_null(ops, inode_getsecctx);
1100 #ifdef CONFIG_SECURITY_NETWORK
1101         set_to_cap_if_null(ops, unix_stream_connect);
1102         set_to_cap_if_null(ops, unix_may_send);
1103         set_to_cap_if_null(ops, socket_create);
1104         set_to_cap_if_null(ops, socket_post_create);
1105         set_to_cap_if_null(ops, socket_bind);
1106         set_to_cap_if_null(ops, socket_connect);
1107         set_to_cap_if_null(ops, socket_listen);
1108         set_to_cap_if_null(ops, socket_accept);
1109         set_to_cap_if_null(ops, socket_sendmsg);
1110         set_to_cap_if_null(ops, socket_recvmsg);
1111         set_to_cap_if_null(ops, socket_getsockname);
1112         set_to_cap_if_null(ops, socket_getpeername);
1113         set_to_cap_if_null(ops, socket_setsockopt);
1114         set_to_cap_if_null(ops, socket_getsockopt);
1115         set_to_cap_if_null(ops, socket_shutdown);
1116         set_to_cap_if_null(ops, socket_sock_rcv_skb);
1117         set_to_cap_if_null(ops, socket_getpeersec_stream);
1118         set_to_cap_if_null(ops, socket_getpeersec_dgram);
1119         set_to_cap_if_null(ops, sk_alloc_security);
1120         set_to_cap_if_null(ops, sk_free_security);
1121         set_to_cap_if_null(ops, sk_clone_security);
1122         set_to_cap_if_null(ops, sk_getsecid);
1123         set_to_cap_if_null(ops, sock_graft);
1124         set_to_cap_if_null(ops, inet_conn_request);
1125         set_to_cap_if_null(ops, inet_csk_clone);
1126         set_to_cap_if_null(ops, inet_conn_established);
1127         set_to_cap_if_null(ops, secmark_relabel_packet);
1128         set_to_cap_if_null(ops, secmark_refcount_inc);
1129         set_to_cap_if_null(ops, secmark_refcount_dec);
1130         set_to_cap_if_null(ops, req_classify_flow);
1131         set_to_cap_if_null(ops, tun_dev_alloc_security);
1132         set_to_cap_if_null(ops, tun_dev_free_security);
1133         set_to_cap_if_null(ops, tun_dev_create);
1134         set_to_cap_if_null(ops, tun_dev_open);
1135         set_to_cap_if_null(ops, tun_dev_attach_queue);
1136         set_to_cap_if_null(ops, tun_dev_attach);
1137         set_to_cap_if_null(ops, skb_owned_by);
1138 #endif  /* CONFIG_SECURITY_NETWORK */
1139 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1140         set_to_cap_if_null(ops, xfrm_policy_alloc_security);
1141         set_to_cap_if_null(ops, xfrm_policy_clone_security);
1142         set_to_cap_if_null(ops, xfrm_policy_free_security);
1143         set_to_cap_if_null(ops, xfrm_policy_delete_security);
1144         set_to_cap_if_null(ops, xfrm_state_alloc);
1145         set_to_cap_if_null(ops, xfrm_state_alloc_acquire);
1146         set_to_cap_if_null(ops, xfrm_state_free_security);
1147         set_to_cap_if_null(ops, xfrm_state_delete_security);
1148         set_to_cap_if_null(ops, xfrm_policy_lookup);
1149         set_to_cap_if_null(ops, xfrm_state_pol_flow_match);
1150         set_to_cap_if_null(ops, xfrm_decode_session);
1151 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1152 #ifdef CONFIG_KEYS
1153         set_to_cap_if_null(ops, key_alloc);
1154         set_to_cap_if_null(ops, key_free);
1155         set_to_cap_if_null(ops, key_permission);
1156         set_to_cap_if_null(ops, key_getsecurity);
1157 #endif  /* CONFIG_KEYS */
1158 #ifdef CONFIG_AUDIT
1159         set_to_cap_if_null(ops, audit_rule_init);
1160         set_to_cap_if_null(ops, audit_rule_known);
1161         set_to_cap_if_null(ops, audit_rule_match);
1162         set_to_cap_if_null(ops, audit_rule_free);
1163 #endif
1164 }