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