security.c revision 2e72d51b4ac32989496870cd8171b3682fea1839
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#include <linux/integrity.h> 20#include <linux/ima.h> 21#include <linux/evm.h> 22#include <linux/fsnotify.h> 23#include <linux/mman.h> 24#include <linux/mount.h> 25#include <linux/personality.h> 26#include <linux/backing-dev.h> 27#include <net/flow.h> 28 29#define MAX_LSM_EVM_XATTR 2 30 31/* Boot-time LSM user choice */ 32static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] = 33 CONFIG_DEFAULT_SECURITY; 34 35static struct security_operations *security_ops; 36static struct security_operations default_security_ops = { 37 .name = "default", 38}; 39 40static inline int __init verify(struct security_operations *ops) 41{ 42 /* verify the security_operations structure exists */ 43 if (!ops) 44 return -EINVAL; 45 security_fixup_ops(ops); 46 return 0; 47} 48 49static void __init do_security_initcalls(void) 50{ 51 initcall_t *call; 52 call = __security_initcall_start; 53 while (call < __security_initcall_end) { 54 (*call) (); 55 call++; 56 } 57} 58 59/** 60 * security_init - initializes the security framework 61 * 62 * This should be called early in the kernel initialization sequence. 63 */ 64int __init security_init(void) 65{ 66 printk(KERN_INFO "Security Framework initialized\n"); 67 68 security_fixup_ops(&default_security_ops); 69 security_ops = &default_security_ops; 70 do_security_initcalls(); 71 72 return 0; 73} 74 75void reset_security_ops(void) 76{ 77 security_ops = &default_security_ops; 78} 79 80/* Save user chosen LSM */ 81static int __init choose_lsm(char *str) 82{ 83 strncpy(chosen_lsm, str, SECURITY_NAME_MAX); 84 return 1; 85} 86__setup("security=", choose_lsm); 87 88/** 89 * security_module_enable - Load given security module on boot ? 90 * @ops: a pointer to the struct security_operations that is to be checked. 91 * 92 * Each LSM must pass this method before registering its own operations 93 * to avoid security registration races. This method may also be used 94 * to check if your LSM is currently loaded during kernel initialization. 95 * 96 * Return true if: 97 * -The passed LSM is the one chosen by user at boot time, 98 * -or the passed LSM is configured as the default and the user did not 99 * choose an alternate LSM at boot time. 100 * Otherwise, return false. 101 */ 102int __init security_module_enable(struct security_operations *ops) 103{ 104 return !strcmp(ops->name, chosen_lsm); 105} 106 107/** 108 * register_security - registers a security framework with the kernel 109 * @ops: a pointer to the struct security_options that is to be registered 110 * 111 * This function allows a security module to register itself with the 112 * kernel security subsystem. Some rudimentary checking is done on the @ops 113 * value passed to this function. You'll need to check first if your LSM 114 * is allowed to register its @ops by calling security_module_enable(@ops). 115 * 116 * If there is already a security module registered with the kernel, 117 * an error will be returned. Otherwise %0 is returned on success. 118 */ 119int __init register_security(struct security_operations *ops) 120{ 121 if (verify(ops)) { 122 printk(KERN_DEBUG "%s could not verify " 123 "security_operations structure.\n", __func__); 124 return -EINVAL; 125 } 126 127 if (security_ops != &default_security_ops) 128 return -EAGAIN; 129 130 security_ops = ops; 131 132 return 0; 133} 134 135/* Security operations */ 136 137int security_ptrace_access_check(struct task_struct *child, unsigned int mode) 138{ 139#ifdef CONFIG_SECURITY_YAMA_STACKED 140 int rc; 141 rc = yama_ptrace_access_check(child, mode); 142 if (rc) 143 return rc; 144#endif 145 return security_ops->ptrace_access_check(child, mode); 146} 147 148int security_ptrace_traceme(struct task_struct *parent) 149{ 150#ifdef CONFIG_SECURITY_YAMA_STACKED 151 int rc; 152 rc = yama_ptrace_traceme(parent); 153 if (rc) 154 return rc; 155#endif 156 return security_ops->ptrace_traceme(parent); 157} 158 159int security_capget(struct task_struct *target, 160 kernel_cap_t *effective, 161 kernel_cap_t *inheritable, 162 kernel_cap_t *permitted) 163{ 164 return security_ops->capget(target, effective, inheritable, permitted); 165} 166 167int security_capset(struct cred *new, const struct cred *old, 168 const kernel_cap_t *effective, 169 const kernel_cap_t *inheritable, 170 const kernel_cap_t *permitted) 171{ 172 return security_ops->capset(new, old, 173 effective, inheritable, permitted); 174} 175 176int security_capable(const struct cred *cred, struct user_namespace *ns, 177 int cap) 178{ 179 return security_ops->capable(cred, ns, cap, SECURITY_CAP_AUDIT); 180} 181 182int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns, 183 int cap) 184{ 185 return security_ops->capable(cred, ns, cap, SECURITY_CAP_NOAUDIT); 186} 187 188int security_quotactl(int cmds, int type, int id, struct super_block *sb) 189{ 190 return security_ops->quotactl(cmds, type, id, sb); 191} 192 193int security_quota_on(struct dentry *dentry) 194{ 195 return security_ops->quota_on(dentry); 196} 197 198int security_syslog(int type) 199{ 200 return security_ops->syslog(type); 201} 202 203int security_settime(const struct timespec *ts, const struct timezone *tz) 204{ 205 return security_ops->settime(ts, tz); 206} 207 208int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 209{ 210 return security_ops->vm_enough_memory(mm, pages); 211} 212 213int security_bprm_set_creds(struct linux_binprm *bprm) 214{ 215 return security_ops->bprm_set_creds(bprm); 216} 217 218int security_bprm_check(struct linux_binprm *bprm) 219{ 220 int ret; 221 222 ret = security_ops->bprm_check_security(bprm); 223 if (ret) 224 return ret; 225 return ima_bprm_check(bprm); 226} 227 228void security_bprm_committing_creds(struct linux_binprm *bprm) 229{ 230 security_ops->bprm_committing_creds(bprm); 231} 232 233void security_bprm_committed_creds(struct linux_binprm *bprm) 234{ 235 security_ops->bprm_committed_creds(bprm); 236} 237 238int security_bprm_secureexec(struct linux_binprm *bprm) 239{ 240 return security_ops->bprm_secureexec(bprm); 241} 242 243int security_sb_alloc(struct super_block *sb) 244{ 245 return security_ops->sb_alloc_security(sb); 246} 247 248void security_sb_free(struct super_block *sb) 249{ 250 security_ops->sb_free_security(sb); 251} 252 253int security_sb_copy_data(char *orig, char *copy) 254{ 255 return security_ops->sb_copy_data(orig, copy); 256} 257EXPORT_SYMBOL(security_sb_copy_data); 258 259int security_sb_remount(struct super_block *sb, void *data) 260{ 261 return security_ops->sb_remount(sb, data); 262} 263 264int security_sb_kern_mount(struct super_block *sb, int flags, void *data) 265{ 266 return security_ops->sb_kern_mount(sb, flags, data); 267} 268 269int security_sb_show_options(struct seq_file *m, struct super_block *sb) 270{ 271 return security_ops->sb_show_options(m, sb); 272} 273 274int security_sb_statfs(struct dentry *dentry) 275{ 276 return security_ops->sb_statfs(dentry); 277} 278 279int security_sb_mount(const char *dev_name, struct path *path, 280 const char *type, unsigned long flags, void *data) 281{ 282 return security_ops->sb_mount(dev_name, path, type, flags, data); 283} 284 285int security_sb_umount(struct vfsmount *mnt, int flags) 286{ 287 return security_ops->sb_umount(mnt, flags); 288} 289 290int security_sb_pivotroot(struct path *old_path, struct path *new_path) 291{ 292 return security_ops->sb_pivotroot(old_path, new_path); 293} 294 295int security_sb_set_mnt_opts(struct super_block *sb, 296 struct security_mnt_opts *opts) 297{ 298 return security_ops->sb_set_mnt_opts(sb, opts); 299} 300EXPORT_SYMBOL(security_sb_set_mnt_opts); 301 302void security_sb_clone_mnt_opts(const struct super_block *oldsb, 303 struct super_block *newsb) 304{ 305 security_ops->sb_clone_mnt_opts(oldsb, newsb); 306} 307EXPORT_SYMBOL(security_sb_clone_mnt_opts); 308 309int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts) 310{ 311 return security_ops->sb_parse_opts_str(options, opts); 312} 313EXPORT_SYMBOL(security_sb_parse_opts_str); 314 315int security_inode_alloc(struct inode *inode) 316{ 317 inode->i_security = NULL; 318 return security_ops->inode_alloc_security(inode); 319} 320 321void security_inode_free(struct inode *inode) 322{ 323 integrity_inode_free(inode); 324 security_ops->inode_free_security(inode); 325} 326 327int security_inode_init_security(struct inode *inode, struct inode *dir, 328 const struct qstr *qstr, 329 const initxattrs initxattrs, void *fs_data) 330{ 331 struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1]; 332 struct xattr *lsm_xattr, *evm_xattr, *xattr; 333 int ret; 334 335 if (unlikely(IS_PRIVATE(inode))) 336 return 0; 337 338 memset(new_xattrs, 0, sizeof new_xattrs); 339 if (!initxattrs) 340 return security_ops->inode_init_security(inode, dir, qstr, 341 NULL, NULL, NULL); 342 lsm_xattr = new_xattrs; 343 ret = security_ops->inode_init_security(inode, dir, qstr, 344 &lsm_xattr->name, 345 &lsm_xattr->value, 346 &lsm_xattr->value_len); 347 if (ret) 348 goto out; 349 350 evm_xattr = lsm_xattr + 1; 351 ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr); 352 if (ret) 353 goto out; 354 ret = initxattrs(inode, new_xattrs, fs_data); 355out: 356 for (xattr = new_xattrs; xattr->name != NULL; xattr++) { 357 kfree(xattr->name); 358 kfree(xattr->value); 359 } 360 return (ret == -EOPNOTSUPP) ? 0 : ret; 361} 362EXPORT_SYMBOL(security_inode_init_security); 363 364int security_old_inode_init_security(struct inode *inode, struct inode *dir, 365 const struct qstr *qstr, char **name, 366 void **value, size_t *len) 367{ 368 if (unlikely(IS_PRIVATE(inode))) 369 return -EOPNOTSUPP; 370 return security_ops->inode_init_security(inode, dir, qstr, name, value, 371 len); 372} 373EXPORT_SYMBOL(security_old_inode_init_security); 374 375#ifdef CONFIG_SECURITY_PATH 376int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode, 377 unsigned int dev) 378{ 379 if (unlikely(IS_PRIVATE(dir->dentry->d_inode))) 380 return 0; 381 return security_ops->path_mknod(dir, dentry, mode, dev); 382} 383EXPORT_SYMBOL(security_path_mknod); 384 385int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode) 386{ 387 if (unlikely(IS_PRIVATE(dir->dentry->d_inode))) 388 return 0; 389 return security_ops->path_mkdir(dir, dentry, mode); 390} 391EXPORT_SYMBOL(security_path_mkdir); 392 393int security_path_rmdir(struct path *dir, struct dentry *dentry) 394{ 395 if (unlikely(IS_PRIVATE(dir->dentry->d_inode))) 396 return 0; 397 return security_ops->path_rmdir(dir, dentry); 398} 399 400int security_path_unlink(struct path *dir, struct dentry *dentry) 401{ 402 if (unlikely(IS_PRIVATE(dir->dentry->d_inode))) 403 return 0; 404 return security_ops->path_unlink(dir, dentry); 405} 406EXPORT_SYMBOL(security_path_unlink); 407 408int security_path_symlink(struct path *dir, struct dentry *dentry, 409 const char *old_name) 410{ 411 if (unlikely(IS_PRIVATE(dir->dentry->d_inode))) 412 return 0; 413 return security_ops->path_symlink(dir, dentry, old_name); 414} 415 416int security_path_link(struct dentry *old_dentry, struct path *new_dir, 417 struct dentry *new_dentry) 418{ 419 if (unlikely(IS_PRIVATE(old_dentry->d_inode))) 420 return 0; 421 return security_ops->path_link(old_dentry, new_dir, new_dentry); 422} 423 424int security_path_rename(struct path *old_dir, struct dentry *old_dentry, 425 struct path *new_dir, struct dentry *new_dentry) 426{ 427 if (unlikely(IS_PRIVATE(old_dentry->d_inode) || 428 (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode)))) 429 return 0; 430 return security_ops->path_rename(old_dir, old_dentry, new_dir, 431 new_dentry); 432} 433EXPORT_SYMBOL(security_path_rename); 434 435int security_path_truncate(struct path *path) 436{ 437 if (unlikely(IS_PRIVATE(path->dentry->d_inode))) 438 return 0; 439 return security_ops->path_truncate(path); 440} 441 442int security_path_chmod(struct path *path, umode_t mode) 443{ 444 if (unlikely(IS_PRIVATE(path->dentry->d_inode))) 445 return 0; 446 return security_ops->path_chmod(path, mode); 447} 448 449int security_path_chown(struct path *path, kuid_t uid, kgid_t gid) 450{ 451 if (unlikely(IS_PRIVATE(path->dentry->d_inode))) 452 return 0; 453 return security_ops->path_chown(path, uid, gid); 454} 455 456int security_path_chroot(struct path *path) 457{ 458 return security_ops->path_chroot(path); 459} 460#endif 461 462int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode) 463{ 464 if (unlikely(IS_PRIVATE(dir))) 465 return 0; 466 return security_ops->inode_create(dir, dentry, mode); 467} 468EXPORT_SYMBOL_GPL(security_inode_create); 469 470int security_inode_link(struct dentry *old_dentry, struct inode *dir, 471 struct dentry *new_dentry) 472{ 473 if (unlikely(IS_PRIVATE(old_dentry->d_inode))) 474 return 0; 475 return security_ops->inode_link(old_dentry, dir, new_dentry); 476} 477 478int security_inode_unlink(struct inode *dir, struct dentry *dentry) 479{ 480 if (unlikely(IS_PRIVATE(dentry->d_inode))) 481 return 0; 482 return security_ops->inode_unlink(dir, dentry); 483} 484 485int security_inode_symlink(struct inode *dir, struct dentry *dentry, 486 const char *old_name) 487{ 488 if (unlikely(IS_PRIVATE(dir))) 489 return 0; 490 return security_ops->inode_symlink(dir, dentry, old_name); 491} 492 493int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) 494{ 495 if (unlikely(IS_PRIVATE(dir))) 496 return 0; 497 return security_ops->inode_mkdir(dir, dentry, mode); 498} 499EXPORT_SYMBOL_GPL(security_inode_mkdir); 500 501int security_inode_rmdir(struct inode *dir, struct dentry *dentry) 502{ 503 if (unlikely(IS_PRIVATE(dentry->d_inode))) 504 return 0; 505 return security_ops->inode_rmdir(dir, dentry); 506} 507 508int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) 509{ 510 if (unlikely(IS_PRIVATE(dir))) 511 return 0; 512 return security_ops->inode_mknod(dir, dentry, mode, dev); 513} 514 515int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 516 struct inode *new_dir, struct dentry *new_dentry) 517{ 518 if (unlikely(IS_PRIVATE(old_dentry->d_inode) || 519 (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode)))) 520 return 0; 521 return security_ops->inode_rename(old_dir, old_dentry, 522 new_dir, new_dentry); 523} 524 525int security_inode_readlink(struct dentry *dentry) 526{ 527 if (unlikely(IS_PRIVATE(dentry->d_inode))) 528 return 0; 529 return security_ops->inode_readlink(dentry); 530} 531 532int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd) 533{ 534 if (unlikely(IS_PRIVATE(dentry->d_inode))) 535 return 0; 536 return security_ops->inode_follow_link(dentry, nd); 537} 538 539int security_inode_permission(struct inode *inode, int mask) 540{ 541 if (unlikely(IS_PRIVATE(inode))) 542 return 0; 543 return security_ops->inode_permission(inode, mask); 544} 545 546int security_inode_setattr(struct dentry *dentry, struct iattr *attr) 547{ 548 int ret; 549 550 if (unlikely(IS_PRIVATE(dentry->d_inode))) 551 return 0; 552 ret = security_ops->inode_setattr(dentry, attr); 553 if (ret) 554 return ret; 555 return evm_inode_setattr(dentry, attr); 556} 557EXPORT_SYMBOL_GPL(security_inode_setattr); 558 559int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry) 560{ 561 if (unlikely(IS_PRIVATE(dentry->d_inode))) 562 return 0; 563 return security_ops->inode_getattr(mnt, dentry); 564} 565 566int security_inode_setxattr(struct dentry *dentry, const char *name, 567 const void *value, size_t size, int flags) 568{ 569 int ret; 570 571 if (unlikely(IS_PRIVATE(dentry->d_inode))) 572 return 0; 573 ret = security_ops->inode_setxattr(dentry, name, value, size, flags); 574 if (ret) 575 return ret; 576 ret = ima_inode_setxattr(dentry, name, value, size); 577 if (ret) 578 return ret; 579 return evm_inode_setxattr(dentry, name, value, size); 580} 581 582void security_inode_post_setxattr(struct dentry *dentry, const char *name, 583 const void *value, size_t size, int flags) 584{ 585 if (unlikely(IS_PRIVATE(dentry->d_inode))) 586 return; 587 security_ops->inode_post_setxattr(dentry, name, value, size, flags); 588 evm_inode_post_setxattr(dentry, name, value, size); 589} 590 591int security_inode_getxattr(struct dentry *dentry, const char *name) 592{ 593 if (unlikely(IS_PRIVATE(dentry->d_inode))) 594 return 0; 595 return security_ops->inode_getxattr(dentry, name); 596} 597 598int security_inode_listxattr(struct dentry *dentry) 599{ 600 if (unlikely(IS_PRIVATE(dentry->d_inode))) 601 return 0; 602 return security_ops->inode_listxattr(dentry); 603} 604 605int security_inode_removexattr(struct dentry *dentry, const char *name) 606{ 607 int ret; 608 609 if (unlikely(IS_PRIVATE(dentry->d_inode))) 610 return 0; 611 ret = security_ops->inode_removexattr(dentry, name); 612 if (ret) 613 return ret; 614 ret = ima_inode_removexattr(dentry, name); 615 if (ret) 616 return ret; 617 return evm_inode_removexattr(dentry, name); 618} 619 620int security_inode_need_killpriv(struct dentry *dentry) 621{ 622 return security_ops->inode_need_killpriv(dentry); 623} 624 625int security_inode_killpriv(struct dentry *dentry) 626{ 627 return security_ops->inode_killpriv(dentry); 628} 629 630int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc) 631{ 632 if (unlikely(IS_PRIVATE(inode))) 633 return -EOPNOTSUPP; 634 return security_ops->inode_getsecurity(inode, name, buffer, alloc); 635} 636 637int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 638{ 639 if (unlikely(IS_PRIVATE(inode))) 640 return -EOPNOTSUPP; 641 return security_ops->inode_setsecurity(inode, name, value, size, flags); 642} 643 644int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 645{ 646 if (unlikely(IS_PRIVATE(inode))) 647 return 0; 648 return security_ops->inode_listsecurity(inode, buffer, buffer_size); 649} 650 651void security_inode_getsecid(const struct inode *inode, u32 *secid) 652{ 653 security_ops->inode_getsecid(inode, secid); 654} 655 656int security_file_permission(struct file *file, int mask) 657{ 658 int ret; 659 660 ret = security_ops->file_permission(file, mask); 661 if (ret) 662 return ret; 663 664 return fsnotify_perm(file, mask); 665} 666 667int security_file_alloc(struct file *file) 668{ 669 return security_ops->file_alloc_security(file); 670} 671 672void security_file_free(struct file *file) 673{ 674 security_ops->file_free_security(file); 675} 676 677int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 678{ 679 return security_ops->file_ioctl(file, cmd, arg); 680} 681 682static inline unsigned long mmap_prot(struct file *file, unsigned long prot) 683{ 684 /* 685 * Does we have PROT_READ and does the application expect 686 * it to imply PROT_EXEC? If not, nothing to talk about... 687 */ 688 if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ) 689 return prot; 690 if (!(current->personality & READ_IMPLIES_EXEC)) 691 return prot; 692 /* 693 * if that's an anonymous mapping, let it. 694 */ 695 if (!file) 696 return prot | PROT_EXEC; 697 /* 698 * ditto if it's not on noexec mount, except that on !MMU we need 699 * BDI_CAP_EXEC_MMAP (== VM_MAYEXEC) in this case 700 */ 701 if (!(file->f_path.mnt->mnt_flags & MNT_NOEXEC)) { 702#ifndef CONFIG_MMU 703 unsigned long caps = 0; 704 struct address_space *mapping = file->f_mapping; 705 if (mapping && mapping->backing_dev_info) 706 caps = mapping->backing_dev_info->capabilities; 707 if (!(caps & BDI_CAP_EXEC_MAP)) 708 return prot; 709#endif 710 return prot | PROT_EXEC; 711 } 712 /* anything on noexec mount won't get PROT_EXEC */ 713 return prot; 714} 715 716int security_mmap_file(struct file *file, unsigned long prot, 717 unsigned long flags) 718{ 719 int ret; 720 ret = security_ops->mmap_file(file, prot, 721 mmap_prot(file, prot), flags); 722 if (ret) 723 return ret; 724 return ima_file_mmap(file, prot); 725} 726 727int security_mmap_addr(unsigned long addr) 728{ 729 return security_ops->mmap_addr(addr); 730} 731 732int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 733 unsigned long prot) 734{ 735 return security_ops->file_mprotect(vma, reqprot, prot); 736} 737 738int security_file_lock(struct file *file, unsigned int cmd) 739{ 740 return security_ops->file_lock(file, cmd); 741} 742 743int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg) 744{ 745 return security_ops->file_fcntl(file, cmd, arg); 746} 747 748int security_file_set_fowner(struct file *file) 749{ 750 return security_ops->file_set_fowner(file); 751} 752 753int security_file_send_sigiotask(struct task_struct *tsk, 754 struct fown_struct *fown, int sig) 755{ 756 return security_ops->file_send_sigiotask(tsk, fown, sig); 757} 758 759int security_file_receive(struct file *file) 760{ 761 return security_ops->file_receive(file); 762} 763 764int security_file_open(struct file *file, const struct cred *cred) 765{ 766 int ret; 767 768 ret = security_ops->file_open(file, cred); 769 if (ret) 770 return ret; 771 772 return fsnotify_perm(file, MAY_OPEN); 773} 774 775int security_task_create(unsigned long clone_flags) 776{ 777 return security_ops->task_create(clone_flags); 778} 779 780void security_task_free(struct task_struct *task) 781{ 782#ifdef CONFIG_SECURITY_YAMA_STACKED 783 yama_task_free(task); 784#endif 785 security_ops->task_free(task); 786} 787 788int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 789{ 790 return security_ops->cred_alloc_blank(cred, gfp); 791} 792 793void security_cred_free(struct cred *cred) 794{ 795 security_ops->cred_free(cred); 796} 797 798int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp) 799{ 800 return security_ops->cred_prepare(new, old, gfp); 801} 802 803void security_transfer_creds(struct cred *new, const struct cred *old) 804{ 805 security_ops->cred_transfer(new, old); 806} 807 808int security_kernel_act_as(struct cred *new, u32 secid) 809{ 810 return security_ops->kernel_act_as(new, secid); 811} 812 813int security_kernel_create_files_as(struct cred *new, struct inode *inode) 814{ 815 return security_ops->kernel_create_files_as(new, inode); 816} 817 818int security_kernel_module_request(char *kmod_name) 819{ 820 return security_ops->kernel_module_request(kmod_name); 821} 822 823int security_kernel_module_from_file(struct file *file) 824{ 825 return security_ops->kernel_module_from_file(file); 826} 827 828int security_task_fix_setuid(struct cred *new, const struct cred *old, 829 int flags) 830{ 831 return security_ops->task_fix_setuid(new, old, flags); 832} 833 834int security_task_setpgid(struct task_struct *p, pid_t pgid) 835{ 836 return security_ops->task_setpgid(p, pgid); 837} 838 839int security_task_getpgid(struct task_struct *p) 840{ 841 return security_ops->task_getpgid(p); 842} 843 844int security_task_getsid(struct task_struct *p) 845{ 846 return security_ops->task_getsid(p); 847} 848 849void security_task_getsecid(struct task_struct *p, u32 *secid) 850{ 851 security_ops->task_getsecid(p, secid); 852} 853EXPORT_SYMBOL(security_task_getsecid); 854 855int security_task_setnice(struct task_struct *p, int nice) 856{ 857 return security_ops->task_setnice(p, nice); 858} 859 860int security_task_setioprio(struct task_struct *p, int ioprio) 861{ 862 return security_ops->task_setioprio(p, ioprio); 863} 864 865int security_task_getioprio(struct task_struct *p) 866{ 867 return security_ops->task_getioprio(p); 868} 869 870int security_task_setrlimit(struct task_struct *p, unsigned int resource, 871 struct rlimit *new_rlim) 872{ 873 return security_ops->task_setrlimit(p, resource, new_rlim); 874} 875 876int security_task_setscheduler(struct task_struct *p) 877{ 878 return security_ops->task_setscheduler(p); 879} 880 881int security_task_getscheduler(struct task_struct *p) 882{ 883 return security_ops->task_getscheduler(p); 884} 885 886int security_task_movememory(struct task_struct *p) 887{ 888 return security_ops->task_movememory(p); 889} 890 891int security_task_kill(struct task_struct *p, struct siginfo *info, 892 int sig, u32 secid) 893{ 894 return security_ops->task_kill(p, info, sig, secid); 895} 896 897int security_task_wait(struct task_struct *p) 898{ 899 return security_ops->task_wait(p); 900} 901 902int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 903 unsigned long arg4, unsigned long arg5) 904{ 905#ifdef CONFIG_SECURITY_YAMA_STACKED 906 int rc; 907 rc = yama_task_prctl(option, arg2, arg3, arg4, arg5); 908 if (rc != -ENOSYS) 909 return rc; 910#endif 911 return security_ops->task_prctl(option, arg2, arg3, arg4, arg5); 912} 913 914void security_task_to_inode(struct task_struct *p, struct inode *inode) 915{ 916 security_ops->task_to_inode(p, inode); 917} 918 919int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag) 920{ 921 return security_ops->ipc_permission(ipcp, flag); 922} 923 924void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 925{ 926 security_ops->ipc_getsecid(ipcp, secid); 927} 928 929int security_msg_msg_alloc(struct msg_msg *msg) 930{ 931 return security_ops->msg_msg_alloc_security(msg); 932} 933 934void security_msg_msg_free(struct msg_msg *msg) 935{ 936 security_ops->msg_msg_free_security(msg); 937} 938 939int security_msg_queue_alloc(struct msg_queue *msq) 940{ 941 return security_ops->msg_queue_alloc_security(msq); 942} 943 944void security_msg_queue_free(struct msg_queue *msq) 945{ 946 security_ops->msg_queue_free_security(msq); 947} 948 949int security_msg_queue_associate(struct msg_queue *msq, int msqflg) 950{ 951 return security_ops->msg_queue_associate(msq, msqflg); 952} 953 954int security_msg_queue_msgctl(struct msg_queue *msq, int cmd) 955{ 956 return security_ops->msg_queue_msgctl(msq, cmd); 957} 958 959int security_msg_queue_msgsnd(struct msg_queue *msq, 960 struct msg_msg *msg, int msqflg) 961{ 962 return security_ops->msg_queue_msgsnd(msq, msg, msqflg); 963} 964 965int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg, 966 struct task_struct *target, long type, int mode) 967{ 968 return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode); 969} 970 971int security_shm_alloc(struct shmid_kernel *shp) 972{ 973 return security_ops->shm_alloc_security(shp); 974} 975 976void security_shm_free(struct shmid_kernel *shp) 977{ 978 security_ops->shm_free_security(shp); 979} 980 981int security_shm_associate(struct shmid_kernel *shp, int shmflg) 982{ 983 return security_ops->shm_associate(shp, shmflg); 984} 985 986int security_shm_shmctl(struct shmid_kernel *shp, int cmd) 987{ 988 return security_ops->shm_shmctl(shp, cmd); 989} 990 991int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg) 992{ 993 return security_ops->shm_shmat(shp, shmaddr, shmflg); 994} 995 996int security_sem_alloc(struct sem_array *sma) 997{ 998 return security_ops->sem_alloc_security(sma); 999} 1000 1001void security_sem_free(struct sem_array *sma) 1002{ 1003 security_ops->sem_free_security(sma); 1004} 1005 1006int security_sem_associate(struct sem_array *sma, int semflg) 1007{ 1008 return security_ops->sem_associate(sma, semflg); 1009} 1010 1011int security_sem_semctl(struct sem_array *sma, int cmd) 1012{ 1013 return security_ops->sem_semctl(sma, cmd); 1014} 1015 1016int security_sem_semop(struct sem_array *sma, struct sembuf *sops, 1017 unsigned nsops, int alter) 1018{ 1019 return security_ops->sem_semop(sma, sops, nsops, alter); 1020} 1021 1022void security_d_instantiate(struct dentry *dentry, struct inode *inode) 1023{ 1024 if (unlikely(inode && IS_PRIVATE(inode))) 1025 return; 1026 security_ops->d_instantiate(dentry, inode); 1027} 1028EXPORT_SYMBOL(security_d_instantiate); 1029 1030int security_getprocattr(struct task_struct *p, char *name, char **value) 1031{ 1032 return security_ops->getprocattr(p, name, value); 1033} 1034 1035int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size) 1036{ 1037 return security_ops->setprocattr(p, name, value, size); 1038} 1039 1040int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1041{ 1042 return security_ops->netlink_send(sk, skb); 1043} 1044 1045int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1046{ 1047 return security_ops->secid_to_secctx(secid, secdata, seclen); 1048} 1049EXPORT_SYMBOL(security_secid_to_secctx); 1050 1051int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid) 1052{ 1053 return security_ops->secctx_to_secid(secdata, seclen, secid); 1054} 1055EXPORT_SYMBOL(security_secctx_to_secid); 1056 1057void security_release_secctx(char *secdata, u32 seclen) 1058{ 1059 security_ops->release_secctx(secdata, seclen); 1060} 1061EXPORT_SYMBOL(security_release_secctx); 1062 1063int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1064{ 1065 return security_ops->inode_notifysecctx(inode, ctx, ctxlen); 1066} 1067EXPORT_SYMBOL(security_inode_notifysecctx); 1068 1069int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1070{ 1071 return security_ops->inode_setsecctx(dentry, ctx, ctxlen); 1072} 1073EXPORT_SYMBOL(security_inode_setsecctx); 1074 1075int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1076{ 1077 return security_ops->inode_getsecctx(inode, ctx, ctxlen); 1078} 1079EXPORT_SYMBOL(security_inode_getsecctx); 1080 1081#ifdef CONFIG_SECURITY_NETWORK 1082 1083int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk) 1084{ 1085 return security_ops->unix_stream_connect(sock, other, newsk); 1086} 1087EXPORT_SYMBOL(security_unix_stream_connect); 1088 1089int security_unix_may_send(struct socket *sock, struct socket *other) 1090{ 1091 return security_ops->unix_may_send(sock, other); 1092} 1093EXPORT_SYMBOL(security_unix_may_send); 1094 1095int security_socket_create(int family, int type, int protocol, int kern) 1096{ 1097 return security_ops->socket_create(family, type, protocol, kern); 1098} 1099 1100int security_socket_post_create(struct socket *sock, int family, 1101 int type, int protocol, int kern) 1102{ 1103 return security_ops->socket_post_create(sock, family, type, 1104 protocol, kern); 1105} 1106 1107int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen) 1108{ 1109 return security_ops->socket_bind(sock, address, addrlen); 1110} 1111 1112int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen) 1113{ 1114 return security_ops->socket_connect(sock, address, addrlen); 1115} 1116 1117int security_socket_listen(struct socket *sock, int backlog) 1118{ 1119 return security_ops->socket_listen(sock, backlog); 1120} 1121 1122int security_socket_accept(struct socket *sock, struct socket *newsock) 1123{ 1124 return security_ops->socket_accept(sock, newsock); 1125} 1126 1127int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size) 1128{ 1129 return security_ops->socket_sendmsg(sock, msg, size); 1130} 1131 1132int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1133 int size, int flags) 1134{ 1135 return security_ops->socket_recvmsg(sock, msg, size, flags); 1136} 1137 1138int security_socket_getsockname(struct socket *sock) 1139{ 1140 return security_ops->socket_getsockname(sock); 1141} 1142 1143int security_socket_getpeername(struct socket *sock) 1144{ 1145 return security_ops->socket_getpeername(sock); 1146} 1147 1148int security_socket_getsockopt(struct socket *sock, int level, int optname) 1149{ 1150 return security_ops->socket_getsockopt(sock, level, optname); 1151} 1152 1153int security_socket_setsockopt(struct socket *sock, int level, int optname) 1154{ 1155 return security_ops->socket_setsockopt(sock, level, optname); 1156} 1157 1158int security_socket_shutdown(struct socket *sock, int how) 1159{ 1160 return security_ops->socket_shutdown(sock, how); 1161} 1162 1163int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb) 1164{ 1165 return security_ops->socket_sock_rcv_skb(sk, skb); 1166} 1167EXPORT_SYMBOL(security_sock_rcv_skb); 1168 1169int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1170 int __user *optlen, unsigned len) 1171{ 1172 return security_ops->socket_getpeersec_stream(sock, optval, optlen, len); 1173} 1174 1175int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1176{ 1177 return security_ops->socket_getpeersec_dgram(sock, skb, secid); 1178} 1179EXPORT_SYMBOL(security_socket_getpeersec_dgram); 1180 1181int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1182{ 1183 return security_ops->sk_alloc_security(sk, family, priority); 1184} 1185 1186void security_sk_free(struct sock *sk) 1187{ 1188 security_ops->sk_free_security(sk); 1189} 1190 1191void security_sk_clone(const struct sock *sk, struct sock *newsk) 1192{ 1193 security_ops->sk_clone_security(sk, newsk); 1194} 1195EXPORT_SYMBOL(security_sk_clone); 1196 1197void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1198{ 1199 security_ops->sk_getsecid(sk, &fl->flowi_secid); 1200} 1201EXPORT_SYMBOL(security_sk_classify_flow); 1202 1203void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1204{ 1205 security_ops->req_classify_flow(req, fl); 1206} 1207EXPORT_SYMBOL(security_req_classify_flow); 1208 1209void security_sock_graft(struct sock *sk, struct socket *parent) 1210{ 1211 security_ops->sock_graft(sk, parent); 1212} 1213EXPORT_SYMBOL(security_sock_graft); 1214 1215int security_inet_conn_request(struct sock *sk, 1216 struct sk_buff *skb, struct request_sock *req) 1217{ 1218 return security_ops->inet_conn_request(sk, skb, req); 1219} 1220EXPORT_SYMBOL(security_inet_conn_request); 1221 1222void security_inet_csk_clone(struct sock *newsk, 1223 const struct request_sock *req) 1224{ 1225 security_ops->inet_csk_clone(newsk, req); 1226} 1227 1228void security_inet_conn_established(struct sock *sk, 1229 struct sk_buff *skb) 1230{ 1231 security_ops->inet_conn_established(sk, skb); 1232} 1233 1234int security_secmark_relabel_packet(u32 secid) 1235{ 1236 return security_ops->secmark_relabel_packet(secid); 1237} 1238EXPORT_SYMBOL(security_secmark_relabel_packet); 1239 1240void security_secmark_refcount_inc(void) 1241{ 1242 security_ops->secmark_refcount_inc(); 1243} 1244EXPORT_SYMBOL(security_secmark_refcount_inc); 1245 1246void security_secmark_refcount_dec(void) 1247{ 1248 security_ops->secmark_refcount_dec(); 1249} 1250EXPORT_SYMBOL(security_secmark_refcount_dec); 1251 1252int security_tun_dev_create(void) 1253{ 1254 return security_ops->tun_dev_create(); 1255} 1256EXPORT_SYMBOL(security_tun_dev_create); 1257 1258void security_tun_dev_post_create(struct sock *sk) 1259{ 1260 return security_ops->tun_dev_post_create(sk); 1261} 1262EXPORT_SYMBOL(security_tun_dev_post_create); 1263 1264int security_tun_dev_attach(struct sock *sk) 1265{ 1266 return security_ops->tun_dev_attach(sk); 1267} 1268EXPORT_SYMBOL(security_tun_dev_attach); 1269 1270#endif /* CONFIG_SECURITY_NETWORK */ 1271 1272#ifdef CONFIG_SECURITY_NETWORK_XFRM 1273 1274int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx) 1275{ 1276 return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx); 1277} 1278EXPORT_SYMBOL(security_xfrm_policy_alloc); 1279 1280int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, 1281 struct xfrm_sec_ctx **new_ctxp) 1282{ 1283 return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp); 1284} 1285 1286void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1287{ 1288 security_ops->xfrm_policy_free_security(ctx); 1289} 1290EXPORT_SYMBOL(security_xfrm_policy_free); 1291 1292int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1293{ 1294 return security_ops->xfrm_policy_delete_security(ctx); 1295} 1296 1297int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx) 1298{ 1299 return security_ops->xfrm_state_alloc_security(x, sec_ctx, 0); 1300} 1301EXPORT_SYMBOL(security_xfrm_state_alloc); 1302 1303int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1304 struct xfrm_sec_ctx *polsec, u32 secid) 1305{ 1306 if (!polsec) 1307 return 0; 1308 /* 1309 * We want the context to be taken from secid which is usually 1310 * from the sock. 1311 */ 1312 return security_ops->xfrm_state_alloc_security(x, NULL, secid); 1313} 1314 1315int security_xfrm_state_delete(struct xfrm_state *x) 1316{ 1317 return security_ops->xfrm_state_delete_security(x); 1318} 1319EXPORT_SYMBOL(security_xfrm_state_delete); 1320 1321void security_xfrm_state_free(struct xfrm_state *x) 1322{ 1323 security_ops->xfrm_state_free_security(x); 1324} 1325 1326int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1327{ 1328 return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir); 1329} 1330 1331int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1332 struct xfrm_policy *xp, 1333 const struct flowi *fl) 1334{ 1335 return security_ops->xfrm_state_pol_flow_match(x, xp, fl); 1336} 1337 1338int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1339{ 1340 return security_ops->xfrm_decode_session(skb, secid, 1); 1341} 1342 1343void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1344{ 1345 int rc = security_ops->xfrm_decode_session(skb, &fl->flowi_secid, 0); 1346 1347 BUG_ON(rc); 1348} 1349EXPORT_SYMBOL(security_skb_classify_flow); 1350 1351#endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1352 1353#ifdef CONFIG_KEYS 1354 1355int security_key_alloc(struct key *key, const struct cred *cred, 1356 unsigned long flags) 1357{ 1358 return security_ops->key_alloc(key, cred, flags); 1359} 1360 1361void security_key_free(struct key *key) 1362{ 1363 security_ops->key_free(key); 1364} 1365 1366int security_key_permission(key_ref_t key_ref, 1367 const struct cred *cred, key_perm_t perm) 1368{ 1369 return security_ops->key_permission(key_ref, cred, perm); 1370} 1371 1372int security_key_getsecurity(struct key *key, char **_buffer) 1373{ 1374 return security_ops->key_getsecurity(key, _buffer); 1375} 1376 1377#endif /* CONFIG_KEYS */ 1378 1379#ifdef CONFIG_AUDIT 1380 1381int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule) 1382{ 1383 return security_ops->audit_rule_init(field, op, rulestr, lsmrule); 1384} 1385 1386int security_audit_rule_known(struct audit_krule *krule) 1387{ 1388 return security_ops->audit_rule_known(krule); 1389} 1390 1391void security_audit_rule_free(void *lsmrule) 1392{ 1393 security_ops->audit_rule_free(lsmrule); 1394} 1395 1396int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule, 1397 struct audit_context *actx) 1398{ 1399 return security_ops->audit_rule_match(secid, field, op, lsmrule, actx); 1400} 1401 1402#endif /* CONFIG_AUDIT */ 1403