security.c revision e52c1764f18a62776a0f2bc6752fb76b6e345827
1/* 2 * Security plug functions 3 * 4 * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com> 5 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> 6 * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 */ 13 14#include <linux/capability.h> 15#include <linux/module.h> 16#include <linux/init.h> 17#include <linux/kernel.h> 18#include <linux/security.h> 19 20/* Boot-time LSM user choice */ 21static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1]; 22 23/* things that live in dummy.c */ 24extern struct security_operations dummy_security_ops; 25extern void security_fixup_ops(struct security_operations *ops); 26 27struct security_operations *security_ops; /* Initialized to NULL */ 28 29/* amount of vm to protect from userspace access */ 30unsigned long mmap_min_addr = CONFIG_SECURITY_DEFAULT_MMAP_MIN_ADDR; 31 32static inline int verify(struct security_operations *ops) 33{ 34 /* verify the security_operations structure exists */ 35 if (!ops) 36 return -EINVAL; 37 security_fixup_ops(ops); 38 return 0; 39} 40 41static void __init do_security_initcalls(void) 42{ 43 initcall_t *call; 44 call = __security_initcall_start; 45 while (call < __security_initcall_end) { 46 (*call) (); 47 call++; 48 } 49} 50 51/** 52 * security_init - initializes the security framework 53 * 54 * This should be called early in the kernel initialization sequence. 55 */ 56int __init security_init(void) 57{ 58 printk(KERN_INFO "Security Framework initialized\n"); 59 60 if (verify(&dummy_security_ops)) { 61 printk(KERN_ERR "%s could not verify " 62 "dummy_security_ops structure.\n", __func__); 63 return -EIO; 64 } 65 66 security_ops = &dummy_security_ops; 67 do_security_initcalls(); 68 69 return 0; 70} 71 72/* Save user chosen LSM */ 73static int __init choose_lsm(char *str) 74{ 75 strncpy(chosen_lsm, str, SECURITY_NAME_MAX); 76 return 1; 77} 78__setup("security=", choose_lsm); 79 80/** 81 * security_module_enable - Load given security module on boot ? 82 * @ops: a pointer to the struct security_operations that is to be checked. 83 * 84 * Each LSM must pass this method before registering its own operations 85 * to avoid security registration races. This method may also be used 86 * to check if your LSM is currently loaded during kernel initialization. 87 * 88 * Return true if: 89 * -The passed LSM is the one chosen by user at boot time, 90 * -or user didsn't specify a specific LSM and we're the first to ask 91 * for registeration permissoin, 92 * -or the passed LSM is currently loaded. 93 * Otherwise, return false. 94 */ 95int __init security_module_enable(struct security_operations *ops) 96{ 97 if (!*chosen_lsm) 98 strncpy(chosen_lsm, ops->name, SECURITY_NAME_MAX); 99 else if (strncmp(ops->name, chosen_lsm, SECURITY_NAME_MAX)) 100 return 0; 101 102 return 1; 103} 104 105/** 106 * register_security - registers a security framework with the kernel 107 * @ops: a pointer to the struct security_options that is to be registered 108 * 109 * This function is to allow a security module to register itself with the 110 * kernel security subsystem. Some rudimentary checking is done on the @ops 111 * value passed to this function. You'll need to check first if your LSM 112 * is allowed to register its @ops by calling security_module_enable(@ops). 113 * 114 * If there is already a security module registered with the kernel, 115 * an error will be returned. Otherwise 0 is returned on success. 116 */ 117int register_security(struct security_operations *ops) 118{ 119 if (verify(ops)) { 120 printk(KERN_DEBUG "%s could not verify " 121 "security_operations structure.\n", __func__); 122 return -EINVAL; 123 } 124 125 if (security_ops != &dummy_security_ops) 126 return -EAGAIN; 127 128 security_ops = ops; 129 130 return 0; 131} 132 133/** 134 * mod_reg_security - allows security modules to be "stacked" 135 * @name: a pointer to a string with the name of the security_options to be registered 136 * @ops: a pointer to the struct security_options that is to be registered 137 * 138 * This function allows security modules to be stacked if the currently loaded 139 * security module allows this to happen. It passes the @name and @ops to the 140 * register_security function of the currently loaded security module. 141 * 142 * The return value depends on the currently loaded security module, with 0 as 143 * success. 144 */ 145int mod_reg_security(const char *name, struct security_operations *ops) 146{ 147 if (verify(ops)) { 148 printk(KERN_INFO "%s could not verify " 149 "security operations.\n", __func__); 150 return -EINVAL; 151 } 152 153 if (ops == security_ops) { 154 printk(KERN_INFO "%s security operations " 155 "already registered.\n", __func__); 156 return -EINVAL; 157 } 158 159 return security_ops->register_security(name, ops); 160} 161 162/* Security operations */ 163 164int security_ptrace(struct task_struct *parent, struct task_struct *child) 165{ 166 return security_ops->ptrace(parent, child); 167} 168 169int security_capget(struct task_struct *target, 170 kernel_cap_t *effective, 171 kernel_cap_t *inheritable, 172 kernel_cap_t *permitted) 173{ 174 return security_ops->capget(target, effective, inheritable, permitted); 175} 176 177int security_capset_check(struct task_struct *target, 178 kernel_cap_t *effective, 179 kernel_cap_t *inheritable, 180 kernel_cap_t *permitted) 181{ 182 return security_ops->capset_check(target, effective, inheritable, permitted); 183} 184 185void security_capset_set(struct task_struct *target, 186 kernel_cap_t *effective, 187 kernel_cap_t *inheritable, 188 kernel_cap_t *permitted) 189{ 190 security_ops->capset_set(target, effective, inheritable, permitted); 191} 192 193int security_capable(struct task_struct *tsk, int cap) 194{ 195 return security_ops->capable(tsk, cap); 196} 197 198int security_acct(struct file *file) 199{ 200 return security_ops->acct(file); 201} 202 203int security_sysctl(struct ctl_table *table, int op) 204{ 205 return security_ops->sysctl(table, op); 206} 207 208int security_quotactl(int cmds, int type, int id, struct super_block *sb) 209{ 210 return security_ops->quotactl(cmds, type, id, sb); 211} 212 213int security_quota_on(struct dentry *dentry) 214{ 215 return security_ops->quota_on(dentry); 216} 217 218int security_syslog(int type) 219{ 220 return security_ops->syslog(type); 221} 222 223int security_settime(struct timespec *ts, struct timezone *tz) 224{ 225 return security_ops->settime(ts, tz); 226} 227 228int security_vm_enough_memory(long pages) 229{ 230 return security_ops->vm_enough_memory(current->mm, pages); 231} 232 233int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 234{ 235 return security_ops->vm_enough_memory(mm, pages); 236} 237 238int security_bprm_alloc(struct linux_binprm *bprm) 239{ 240 return security_ops->bprm_alloc_security(bprm); 241} 242 243void security_bprm_free(struct linux_binprm *bprm) 244{ 245 security_ops->bprm_free_security(bprm); 246} 247 248void security_bprm_apply_creds(struct linux_binprm *bprm, int unsafe) 249{ 250 security_ops->bprm_apply_creds(bprm, unsafe); 251} 252 253void security_bprm_post_apply_creds(struct linux_binprm *bprm) 254{ 255 security_ops->bprm_post_apply_creds(bprm); 256} 257 258int security_bprm_set(struct linux_binprm *bprm) 259{ 260 return security_ops->bprm_set_security(bprm); 261} 262 263int security_bprm_check(struct linux_binprm *bprm) 264{ 265 return security_ops->bprm_check_security(bprm); 266} 267 268int security_bprm_secureexec(struct linux_binprm *bprm) 269{ 270 return security_ops->bprm_secureexec(bprm); 271} 272 273int security_sb_alloc(struct super_block *sb) 274{ 275 return security_ops->sb_alloc_security(sb); 276} 277 278void security_sb_free(struct super_block *sb) 279{ 280 security_ops->sb_free_security(sb); 281} 282 283int security_sb_copy_data(char *orig, char *copy) 284{ 285 return security_ops->sb_copy_data(orig, copy); 286} 287EXPORT_SYMBOL(security_sb_copy_data); 288 289int security_sb_kern_mount(struct super_block *sb, void *data) 290{ 291 return security_ops->sb_kern_mount(sb, data); 292} 293 294int security_sb_statfs(struct dentry *dentry) 295{ 296 return security_ops->sb_statfs(dentry); 297} 298 299int security_sb_mount(char *dev_name, struct path *path, 300 char *type, unsigned long flags, void *data) 301{ 302 return security_ops->sb_mount(dev_name, path, type, flags, data); 303} 304 305int security_sb_check_sb(struct vfsmount *mnt, struct path *path) 306{ 307 return security_ops->sb_check_sb(mnt, path); 308} 309 310int security_sb_umount(struct vfsmount *mnt, int flags) 311{ 312 return security_ops->sb_umount(mnt, flags); 313} 314 315void security_sb_umount_close(struct vfsmount *mnt) 316{ 317 security_ops->sb_umount_close(mnt); 318} 319 320void security_sb_umount_busy(struct vfsmount *mnt) 321{ 322 security_ops->sb_umount_busy(mnt); 323} 324 325void security_sb_post_remount(struct vfsmount *mnt, unsigned long flags, void *data) 326{ 327 security_ops->sb_post_remount(mnt, flags, data); 328} 329 330void security_sb_post_addmount(struct vfsmount *mnt, struct path *mountpoint) 331{ 332 security_ops->sb_post_addmount(mnt, mountpoint); 333} 334 335int security_sb_pivotroot(struct path *old_path, struct path *new_path) 336{ 337 return security_ops->sb_pivotroot(old_path, new_path); 338} 339 340void security_sb_post_pivotroot(struct path *old_path, struct path *new_path) 341{ 342 security_ops->sb_post_pivotroot(old_path, new_path); 343} 344 345int security_sb_get_mnt_opts(const struct super_block *sb, 346 struct security_mnt_opts *opts) 347{ 348 return security_ops->sb_get_mnt_opts(sb, opts); 349} 350 351int security_sb_set_mnt_opts(struct super_block *sb, 352 struct security_mnt_opts *opts) 353{ 354 return security_ops->sb_set_mnt_opts(sb, opts); 355} 356EXPORT_SYMBOL(security_sb_set_mnt_opts); 357 358void security_sb_clone_mnt_opts(const struct super_block *oldsb, 359 struct super_block *newsb) 360{ 361 security_ops->sb_clone_mnt_opts(oldsb, newsb); 362} 363EXPORT_SYMBOL(security_sb_clone_mnt_opts); 364 365int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts) 366{ 367 return security_ops->sb_parse_opts_str(options, opts); 368} 369EXPORT_SYMBOL(security_sb_parse_opts_str); 370 371int security_inode_alloc(struct inode *inode) 372{ 373 inode->i_security = NULL; 374 return security_ops->inode_alloc_security(inode); 375} 376 377void security_inode_free(struct inode *inode) 378{ 379 security_ops->inode_free_security(inode); 380} 381 382int security_inode_init_security(struct inode *inode, struct inode *dir, 383 char **name, void **value, size_t *len) 384{ 385 if (unlikely(IS_PRIVATE(inode))) 386 return -EOPNOTSUPP; 387 return security_ops->inode_init_security(inode, dir, name, value, len); 388} 389EXPORT_SYMBOL(security_inode_init_security); 390 391int security_inode_create(struct inode *dir, struct dentry *dentry, int mode) 392{ 393 if (unlikely(IS_PRIVATE(dir))) 394 return 0; 395 return security_ops->inode_create(dir, dentry, mode); 396} 397 398int security_inode_link(struct dentry *old_dentry, struct inode *dir, 399 struct dentry *new_dentry) 400{ 401 if (unlikely(IS_PRIVATE(old_dentry->d_inode))) 402 return 0; 403 return security_ops->inode_link(old_dentry, dir, new_dentry); 404} 405 406int security_inode_unlink(struct inode *dir, struct dentry *dentry) 407{ 408 if (unlikely(IS_PRIVATE(dentry->d_inode))) 409 return 0; 410 return security_ops->inode_unlink(dir, dentry); 411} 412 413int security_inode_symlink(struct inode *dir, struct dentry *dentry, 414 const char *old_name) 415{ 416 if (unlikely(IS_PRIVATE(dir))) 417 return 0; 418 return security_ops->inode_symlink(dir, dentry, old_name); 419} 420 421int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode) 422{ 423 if (unlikely(IS_PRIVATE(dir))) 424 return 0; 425 return security_ops->inode_mkdir(dir, dentry, mode); 426} 427 428int security_inode_rmdir(struct inode *dir, struct dentry *dentry) 429{ 430 if (unlikely(IS_PRIVATE(dentry->d_inode))) 431 return 0; 432 return security_ops->inode_rmdir(dir, dentry); 433} 434 435int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev) 436{ 437 if (unlikely(IS_PRIVATE(dir))) 438 return 0; 439 return security_ops->inode_mknod(dir, dentry, mode, dev); 440} 441 442int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 443 struct inode *new_dir, struct dentry *new_dentry) 444{ 445 if (unlikely(IS_PRIVATE(old_dentry->d_inode) || 446 (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode)))) 447 return 0; 448 return security_ops->inode_rename(old_dir, old_dentry, 449 new_dir, new_dentry); 450} 451 452int security_inode_readlink(struct dentry *dentry) 453{ 454 if (unlikely(IS_PRIVATE(dentry->d_inode))) 455 return 0; 456 return security_ops->inode_readlink(dentry); 457} 458 459int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd) 460{ 461 if (unlikely(IS_PRIVATE(dentry->d_inode))) 462 return 0; 463 return security_ops->inode_follow_link(dentry, nd); 464} 465 466int security_inode_permission(struct inode *inode, int mask, struct nameidata *nd) 467{ 468 if (unlikely(IS_PRIVATE(inode))) 469 return 0; 470 return security_ops->inode_permission(inode, mask, nd); 471} 472 473int security_inode_setattr(struct dentry *dentry, struct iattr *attr) 474{ 475 if (unlikely(IS_PRIVATE(dentry->d_inode))) 476 return 0; 477 return security_ops->inode_setattr(dentry, attr); 478} 479 480int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry) 481{ 482 if (unlikely(IS_PRIVATE(dentry->d_inode))) 483 return 0; 484 return security_ops->inode_getattr(mnt, dentry); 485} 486 487void security_inode_delete(struct inode *inode) 488{ 489 if (unlikely(IS_PRIVATE(inode))) 490 return; 491 security_ops->inode_delete(inode); 492} 493 494int security_inode_setxattr(struct dentry *dentry, const char *name, 495 const void *value, size_t size, int flags) 496{ 497 if (unlikely(IS_PRIVATE(dentry->d_inode))) 498 return 0; 499 return security_ops->inode_setxattr(dentry, name, value, size, flags); 500} 501 502void security_inode_post_setxattr(struct dentry *dentry, const char *name, 503 const void *value, size_t size, int flags) 504{ 505 if (unlikely(IS_PRIVATE(dentry->d_inode))) 506 return; 507 security_ops->inode_post_setxattr(dentry, name, value, size, flags); 508} 509 510int security_inode_getxattr(struct dentry *dentry, const char *name) 511{ 512 if (unlikely(IS_PRIVATE(dentry->d_inode))) 513 return 0; 514 return security_ops->inode_getxattr(dentry, name); 515} 516 517int security_inode_listxattr(struct dentry *dentry) 518{ 519 if (unlikely(IS_PRIVATE(dentry->d_inode))) 520 return 0; 521 return security_ops->inode_listxattr(dentry); 522} 523 524int security_inode_removexattr(struct dentry *dentry, const char *name) 525{ 526 if (unlikely(IS_PRIVATE(dentry->d_inode))) 527 return 0; 528 return security_ops->inode_removexattr(dentry, name); 529} 530 531int security_inode_need_killpriv(struct dentry *dentry) 532{ 533 return security_ops->inode_need_killpriv(dentry); 534} 535 536int security_inode_killpriv(struct dentry *dentry) 537{ 538 return security_ops->inode_killpriv(dentry); 539} 540 541int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc) 542{ 543 if (unlikely(IS_PRIVATE(inode))) 544 return 0; 545 return security_ops->inode_getsecurity(inode, name, buffer, alloc); 546} 547 548int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 549{ 550 if (unlikely(IS_PRIVATE(inode))) 551 return 0; 552 return security_ops->inode_setsecurity(inode, name, value, size, flags); 553} 554 555int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 556{ 557 if (unlikely(IS_PRIVATE(inode))) 558 return 0; 559 return security_ops->inode_listsecurity(inode, buffer, buffer_size); 560} 561 562void security_inode_getsecid(const struct inode *inode, u32 *secid) 563{ 564 security_ops->inode_getsecid(inode, secid); 565} 566 567int security_file_permission(struct file *file, int mask) 568{ 569 return security_ops->file_permission(file, mask); 570} 571 572int security_file_alloc(struct file *file) 573{ 574 return security_ops->file_alloc_security(file); 575} 576 577void security_file_free(struct file *file) 578{ 579 security_ops->file_free_security(file); 580} 581 582int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 583{ 584 return security_ops->file_ioctl(file, cmd, arg); 585} 586 587int security_file_mmap(struct file *file, unsigned long reqprot, 588 unsigned long prot, unsigned long flags, 589 unsigned long addr, unsigned long addr_only) 590{ 591 return security_ops->file_mmap(file, reqprot, prot, flags, addr, addr_only); 592} 593 594int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 595 unsigned long prot) 596{ 597 return security_ops->file_mprotect(vma, reqprot, prot); 598} 599 600int security_file_lock(struct file *file, unsigned int cmd) 601{ 602 return security_ops->file_lock(file, cmd); 603} 604 605int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg) 606{ 607 return security_ops->file_fcntl(file, cmd, arg); 608} 609 610int security_file_set_fowner(struct file *file) 611{ 612 return security_ops->file_set_fowner(file); 613} 614 615int security_file_send_sigiotask(struct task_struct *tsk, 616 struct fown_struct *fown, int sig) 617{ 618 return security_ops->file_send_sigiotask(tsk, fown, sig); 619} 620 621int security_file_receive(struct file *file) 622{ 623 return security_ops->file_receive(file); 624} 625 626int security_dentry_open(struct file *file) 627{ 628 return security_ops->dentry_open(file); 629} 630 631int security_task_create(unsigned long clone_flags) 632{ 633 return security_ops->task_create(clone_flags); 634} 635 636int security_task_alloc(struct task_struct *p) 637{ 638 return security_ops->task_alloc_security(p); 639} 640 641void security_task_free(struct task_struct *p) 642{ 643 security_ops->task_free_security(p); 644} 645 646int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags) 647{ 648 return security_ops->task_setuid(id0, id1, id2, flags); 649} 650 651int security_task_post_setuid(uid_t old_ruid, uid_t old_euid, 652 uid_t old_suid, int flags) 653{ 654 return security_ops->task_post_setuid(old_ruid, old_euid, old_suid, flags); 655} 656 657int security_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags) 658{ 659 return security_ops->task_setgid(id0, id1, id2, flags); 660} 661 662int security_task_setpgid(struct task_struct *p, pid_t pgid) 663{ 664 return security_ops->task_setpgid(p, pgid); 665} 666 667int security_task_getpgid(struct task_struct *p) 668{ 669 return security_ops->task_getpgid(p); 670} 671 672int security_task_getsid(struct task_struct *p) 673{ 674 return security_ops->task_getsid(p); 675} 676 677void security_task_getsecid(struct task_struct *p, u32 *secid) 678{ 679 security_ops->task_getsecid(p, secid); 680} 681EXPORT_SYMBOL(security_task_getsecid); 682 683int security_task_setgroups(struct group_info *group_info) 684{ 685 return security_ops->task_setgroups(group_info); 686} 687 688int security_task_setnice(struct task_struct *p, int nice) 689{ 690 return security_ops->task_setnice(p, nice); 691} 692 693int security_task_setioprio(struct task_struct *p, int ioprio) 694{ 695 return security_ops->task_setioprio(p, ioprio); 696} 697 698int security_task_getioprio(struct task_struct *p) 699{ 700 return security_ops->task_getioprio(p); 701} 702 703int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim) 704{ 705 return security_ops->task_setrlimit(resource, new_rlim); 706} 707 708int security_task_setscheduler(struct task_struct *p, 709 int policy, struct sched_param *lp) 710{ 711 return security_ops->task_setscheduler(p, policy, lp); 712} 713 714int security_task_getscheduler(struct task_struct *p) 715{ 716 return security_ops->task_getscheduler(p); 717} 718 719int security_task_movememory(struct task_struct *p) 720{ 721 return security_ops->task_movememory(p); 722} 723 724int security_task_kill(struct task_struct *p, struct siginfo *info, 725 int sig, u32 secid) 726{ 727 return security_ops->task_kill(p, info, sig, secid); 728} 729 730int security_task_wait(struct task_struct *p) 731{ 732 return security_ops->task_wait(p); 733} 734 735int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 736 unsigned long arg4, unsigned long arg5, long *rc_p) 737{ 738 return security_ops->task_prctl(option, arg2, arg3, arg4, arg5, rc_p); 739} 740 741void security_task_reparent_to_init(struct task_struct *p) 742{ 743 security_ops->task_reparent_to_init(p); 744} 745 746void security_task_to_inode(struct task_struct *p, struct inode *inode) 747{ 748 security_ops->task_to_inode(p, inode); 749} 750 751int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag) 752{ 753 return security_ops->ipc_permission(ipcp, flag); 754} 755 756void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 757{ 758 security_ops->ipc_getsecid(ipcp, secid); 759} 760 761int security_msg_msg_alloc(struct msg_msg *msg) 762{ 763 return security_ops->msg_msg_alloc_security(msg); 764} 765 766void security_msg_msg_free(struct msg_msg *msg) 767{ 768 security_ops->msg_msg_free_security(msg); 769} 770 771int security_msg_queue_alloc(struct msg_queue *msq) 772{ 773 return security_ops->msg_queue_alloc_security(msq); 774} 775 776void security_msg_queue_free(struct msg_queue *msq) 777{ 778 security_ops->msg_queue_free_security(msq); 779} 780 781int security_msg_queue_associate(struct msg_queue *msq, int msqflg) 782{ 783 return security_ops->msg_queue_associate(msq, msqflg); 784} 785 786int security_msg_queue_msgctl(struct msg_queue *msq, int cmd) 787{ 788 return security_ops->msg_queue_msgctl(msq, cmd); 789} 790 791int security_msg_queue_msgsnd(struct msg_queue *msq, 792 struct msg_msg *msg, int msqflg) 793{ 794 return security_ops->msg_queue_msgsnd(msq, msg, msqflg); 795} 796 797int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg, 798 struct task_struct *target, long type, int mode) 799{ 800 return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode); 801} 802 803int security_shm_alloc(struct shmid_kernel *shp) 804{ 805 return security_ops->shm_alloc_security(shp); 806} 807 808void security_shm_free(struct shmid_kernel *shp) 809{ 810 security_ops->shm_free_security(shp); 811} 812 813int security_shm_associate(struct shmid_kernel *shp, int shmflg) 814{ 815 return security_ops->shm_associate(shp, shmflg); 816} 817 818int security_shm_shmctl(struct shmid_kernel *shp, int cmd) 819{ 820 return security_ops->shm_shmctl(shp, cmd); 821} 822 823int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg) 824{ 825 return security_ops->shm_shmat(shp, shmaddr, shmflg); 826} 827 828int security_sem_alloc(struct sem_array *sma) 829{ 830 return security_ops->sem_alloc_security(sma); 831} 832 833void security_sem_free(struct sem_array *sma) 834{ 835 security_ops->sem_free_security(sma); 836} 837 838int security_sem_associate(struct sem_array *sma, int semflg) 839{ 840 return security_ops->sem_associate(sma, semflg); 841} 842 843int security_sem_semctl(struct sem_array *sma, int cmd) 844{ 845 return security_ops->sem_semctl(sma, cmd); 846} 847 848int security_sem_semop(struct sem_array *sma, struct sembuf *sops, 849 unsigned nsops, int alter) 850{ 851 return security_ops->sem_semop(sma, sops, nsops, alter); 852} 853 854void security_d_instantiate(struct dentry *dentry, struct inode *inode) 855{ 856 if (unlikely(inode && IS_PRIVATE(inode))) 857 return; 858 security_ops->d_instantiate(dentry, inode); 859} 860EXPORT_SYMBOL(security_d_instantiate); 861 862int security_getprocattr(struct task_struct *p, char *name, char **value) 863{ 864 return security_ops->getprocattr(p, name, value); 865} 866 867int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size) 868{ 869 return security_ops->setprocattr(p, name, value, size); 870} 871 872int security_netlink_send(struct sock *sk, struct sk_buff *skb) 873{ 874 return security_ops->netlink_send(sk, skb); 875} 876 877int security_netlink_recv(struct sk_buff *skb, int cap) 878{ 879 return security_ops->netlink_recv(skb, cap); 880} 881EXPORT_SYMBOL(security_netlink_recv); 882 883int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 884{ 885 return security_ops->secid_to_secctx(secid, secdata, seclen); 886} 887EXPORT_SYMBOL(security_secid_to_secctx); 888 889int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid) 890{ 891 return security_ops->secctx_to_secid(secdata, seclen, secid); 892} 893EXPORT_SYMBOL(security_secctx_to_secid); 894 895void security_release_secctx(char *secdata, u32 seclen) 896{ 897 return security_ops->release_secctx(secdata, seclen); 898} 899EXPORT_SYMBOL(security_release_secctx); 900 901#ifdef CONFIG_SECURITY_NETWORK 902 903int security_unix_stream_connect(struct socket *sock, struct socket *other, 904 struct sock *newsk) 905{ 906 return security_ops->unix_stream_connect(sock, other, newsk); 907} 908EXPORT_SYMBOL(security_unix_stream_connect); 909 910int security_unix_may_send(struct socket *sock, struct socket *other) 911{ 912 return security_ops->unix_may_send(sock, other); 913} 914EXPORT_SYMBOL(security_unix_may_send); 915 916int security_socket_create(int family, int type, int protocol, int kern) 917{ 918 return security_ops->socket_create(family, type, protocol, kern); 919} 920 921int security_socket_post_create(struct socket *sock, int family, 922 int type, int protocol, int kern) 923{ 924 return security_ops->socket_post_create(sock, family, type, 925 protocol, kern); 926} 927 928int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen) 929{ 930 return security_ops->socket_bind(sock, address, addrlen); 931} 932 933int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen) 934{ 935 return security_ops->socket_connect(sock, address, addrlen); 936} 937 938int security_socket_listen(struct socket *sock, int backlog) 939{ 940 return security_ops->socket_listen(sock, backlog); 941} 942 943int security_socket_accept(struct socket *sock, struct socket *newsock) 944{ 945 return security_ops->socket_accept(sock, newsock); 946} 947 948void security_socket_post_accept(struct socket *sock, struct socket *newsock) 949{ 950 security_ops->socket_post_accept(sock, newsock); 951} 952 953int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size) 954{ 955 return security_ops->socket_sendmsg(sock, msg, size); 956} 957 958int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 959 int size, int flags) 960{ 961 return security_ops->socket_recvmsg(sock, msg, size, flags); 962} 963 964int security_socket_getsockname(struct socket *sock) 965{ 966 return security_ops->socket_getsockname(sock); 967} 968 969int security_socket_getpeername(struct socket *sock) 970{ 971 return security_ops->socket_getpeername(sock); 972} 973 974int security_socket_getsockopt(struct socket *sock, int level, int optname) 975{ 976 return security_ops->socket_getsockopt(sock, level, optname); 977} 978 979int security_socket_setsockopt(struct socket *sock, int level, int optname) 980{ 981 return security_ops->socket_setsockopt(sock, level, optname); 982} 983 984int security_socket_shutdown(struct socket *sock, int how) 985{ 986 return security_ops->socket_shutdown(sock, how); 987} 988 989int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb) 990{ 991 return security_ops->socket_sock_rcv_skb(sk, skb); 992} 993EXPORT_SYMBOL(security_sock_rcv_skb); 994 995int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 996 int __user *optlen, unsigned len) 997{ 998 return security_ops->socket_getpeersec_stream(sock, optval, optlen, len); 999} 1000 1001int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1002{ 1003 return security_ops->socket_getpeersec_dgram(sock, skb, secid); 1004} 1005EXPORT_SYMBOL(security_socket_getpeersec_dgram); 1006 1007int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1008{ 1009 return security_ops->sk_alloc_security(sk, family, priority); 1010} 1011 1012void security_sk_free(struct sock *sk) 1013{ 1014 return security_ops->sk_free_security(sk); 1015} 1016 1017void security_sk_clone(const struct sock *sk, struct sock *newsk) 1018{ 1019 return security_ops->sk_clone_security(sk, newsk); 1020} 1021 1022void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1023{ 1024 security_ops->sk_getsecid(sk, &fl->secid); 1025} 1026EXPORT_SYMBOL(security_sk_classify_flow); 1027 1028void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1029{ 1030 security_ops->req_classify_flow(req, fl); 1031} 1032EXPORT_SYMBOL(security_req_classify_flow); 1033 1034void security_sock_graft(struct sock *sk, struct socket *parent) 1035{ 1036 security_ops->sock_graft(sk, parent); 1037} 1038EXPORT_SYMBOL(security_sock_graft); 1039 1040int security_inet_conn_request(struct sock *sk, 1041 struct sk_buff *skb, struct request_sock *req) 1042{ 1043 return security_ops->inet_conn_request(sk, skb, req); 1044} 1045EXPORT_SYMBOL(security_inet_conn_request); 1046 1047void security_inet_csk_clone(struct sock *newsk, 1048 const struct request_sock *req) 1049{ 1050 security_ops->inet_csk_clone(newsk, req); 1051} 1052 1053void security_inet_conn_established(struct sock *sk, 1054 struct sk_buff *skb) 1055{ 1056 security_ops->inet_conn_established(sk, skb); 1057} 1058 1059#endif /* CONFIG_SECURITY_NETWORK */ 1060 1061#ifdef CONFIG_SECURITY_NETWORK_XFRM 1062 1063int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx) 1064{ 1065 return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx); 1066} 1067EXPORT_SYMBOL(security_xfrm_policy_alloc); 1068 1069int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, 1070 struct xfrm_sec_ctx **new_ctxp) 1071{ 1072 return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp); 1073} 1074 1075void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1076{ 1077 security_ops->xfrm_policy_free_security(ctx); 1078} 1079EXPORT_SYMBOL(security_xfrm_policy_free); 1080 1081int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1082{ 1083 return security_ops->xfrm_policy_delete_security(ctx); 1084} 1085 1086int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx) 1087{ 1088 return security_ops->xfrm_state_alloc_security(x, sec_ctx, 0); 1089} 1090EXPORT_SYMBOL(security_xfrm_state_alloc); 1091 1092int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1093 struct xfrm_sec_ctx *polsec, u32 secid) 1094{ 1095 if (!polsec) 1096 return 0; 1097 /* 1098 * We want the context to be taken from secid which is usually 1099 * from the sock. 1100 */ 1101 return security_ops->xfrm_state_alloc_security(x, NULL, secid); 1102} 1103 1104int security_xfrm_state_delete(struct xfrm_state *x) 1105{ 1106 return security_ops->xfrm_state_delete_security(x); 1107} 1108EXPORT_SYMBOL(security_xfrm_state_delete); 1109 1110void security_xfrm_state_free(struct xfrm_state *x) 1111{ 1112 security_ops->xfrm_state_free_security(x); 1113} 1114 1115int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1116{ 1117 return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir); 1118} 1119 1120int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1121 struct xfrm_policy *xp, struct flowi *fl) 1122{ 1123 return security_ops->xfrm_state_pol_flow_match(x, xp, fl); 1124} 1125 1126int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1127{ 1128 return security_ops->xfrm_decode_session(skb, secid, 1); 1129} 1130 1131void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1132{ 1133 int rc = security_ops->xfrm_decode_session(skb, &fl->secid, 0); 1134 1135 BUG_ON(rc); 1136} 1137EXPORT_SYMBOL(security_skb_classify_flow); 1138 1139#endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1140 1141#ifdef CONFIG_KEYS 1142 1143int security_key_alloc(struct key *key, struct task_struct *tsk, unsigned long flags) 1144{ 1145 return security_ops->key_alloc(key, tsk, flags); 1146} 1147 1148void security_key_free(struct key *key) 1149{ 1150 security_ops->key_free(key); 1151} 1152 1153int security_key_permission(key_ref_t key_ref, 1154 struct task_struct *context, key_perm_t perm) 1155{ 1156 return security_ops->key_permission(key_ref, context, perm); 1157} 1158 1159int security_key_getsecurity(struct key *key, char **_buffer) 1160{ 1161 return security_ops->key_getsecurity(key, _buffer); 1162} 1163 1164#endif /* CONFIG_KEYS */ 1165 1166#ifdef CONFIG_AUDIT 1167 1168int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule) 1169{ 1170 return security_ops->audit_rule_init(field, op, rulestr, lsmrule); 1171} 1172 1173int security_audit_rule_known(struct audit_krule *krule) 1174{ 1175 return security_ops->audit_rule_known(krule); 1176} 1177 1178void security_audit_rule_free(void *lsmrule) 1179{ 1180 security_ops->audit_rule_free(lsmrule); 1181} 1182 1183int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule, 1184 struct audit_context *actx) 1185{ 1186 return security_ops->audit_rule_match(secid, field, op, lsmrule, actx); 1187} 1188 1189#endif /* CONFIG_AUDIT */ 1190