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
  20/* Boot-time LSM user choice */
  21static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1];
  22
  23/* things that live in capability.c */
  24extern struct security_operations default_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        security_fixup_ops(&default_security_ops);
  61        security_ops = &default_security_ops;
  62        do_security_initcalls();
  63
  64        return 0;
  65}
  66
  67/* Save user chosen LSM */
  68static int __init choose_lsm(char *str)
  69{
  70        strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
  71        return 1;
  72}
  73__setup("security=", choose_lsm);
  74
  75/**
  76 * security_module_enable - Load given security module on boot ?
  77 * @ops: a pointer to the struct security_operations that is to be checked.
  78 *
  79 * Each LSM must pass this method before registering its own operations
  80 * to avoid security registration races. This method may also be used
  81 * to check if your LSM is currently loaded during kernel initialization.
  82 *
  83 * Return true if:
  84 *      -The passed LSM is the one chosen by user at boot time,
  85 *      -or user didn't specify a specific LSM and we're the first to ask
  86 *       for registration permission,
  87 *      -or the passed LSM is currently loaded.
  88 * Otherwise, return false.
  89 */
  90int __init security_module_enable(struct security_operations *ops)
  91{
  92        if (!*chosen_lsm)
  93                strncpy(chosen_lsm, ops->name, SECURITY_NAME_MAX);
  94        else if (strncmp(ops->name, chosen_lsm, SECURITY_NAME_MAX))
  95                return 0;
  96
  97        return 1;
  98}
  99
 100/**
 101 * register_security - registers a security framework with the kernel
 102 * @ops: a pointer to the struct security_options that is to be registered
 103 *
 104 * This function allows a security module to register itself with the
 105 * kernel security subsystem.  Some rudimentary checking is done on the @ops
 106 * value passed to this function. You'll need to check first if your LSM
 107 * is allowed to register its @ops by calling security_module_enable(@ops).
 108 *
 109 * If there is already a security module registered with the kernel,
 110 * an error will be returned.  Otherwise %0 is returned on success.
 111 */
 112int register_security(struct security_operations *ops)
 113{
 114        if (verify(ops)) {
 115                printk(KERN_DEBUG "%s could not verify "
 116                       "security_operations structure.\n", __func__);
 117                return -EINVAL;
 118        }
 119
 120        if (security_ops != &default_security_ops)
 121                return -EAGAIN;
 122
 123        security_ops = ops;
 124
 125        return 0;
 126}
 127
 128/* Security operations */
 129
 130int security_ptrace_may_access(struct task_struct *child, unsigned int mode)
 131{
 132        return security_ops->ptrace_may_access(child, mode);
 133}
 134
 135int security_ptrace_traceme(struct task_struct *parent)
 136{
 137        return security_ops->ptrace_traceme(parent);
 138}
 139
 140int security_capget(struct task_struct *target,
 141                     kernel_cap_t *effective,
 142                     kernel_cap_t *inheritable,
 143                     kernel_cap_t *permitted)
 144{
 145        return security_ops->capget(target, effective, inheritable, permitted);
 146}
 147
 148int security_capset(struct cred *new, const struct cred *old,
 149                    const kernel_cap_t *effective,
 150                    const kernel_cap_t *inheritable,
 151                    const kernel_cap_t *permitted)
 152{
 153        return security_ops->capset(new, old,
 154                                    effective, inheritable, permitted);
 155}
 156
 157int security_capable(int cap)
 158{
 159        return security_ops->capable(current, current_cred(), cap,
 160                                     SECURITY_CAP_AUDIT);
 161}
 162
 163int security_real_capable(struct task_struct *tsk, int cap)
 164{
 165        const struct cred *cred;
 166        int ret;
 167
 168        cred = get_task_cred(tsk);
 169        ret = security_ops->capable(tsk, cred, cap, SECURITY_CAP_AUDIT);
 170        put_cred(cred);
 171        return ret;
 172}
 173
 174int security_real_capable_noaudit(struct task_struct *tsk, int cap)
 175{
 176        const struct cred *cred;
 177        int ret;
 178
 179        cred = get_task_cred(tsk);
 180        ret = security_ops->capable(tsk, cred, cap, SECURITY_CAP_NOAUDIT);
 181        put_cred(cred);
 182        return ret;
 183}
 184
 185int security_acct(struct file *file)
 186{
 187        return security_ops->acct(file);
 188}
 189
 190int security_sysctl(struct ctl_table *table, int op)
 191{
 192        return security_ops->sysctl(table, op);
 193}
 194
 195int security_quotactl(int cmds, int type, int id, struct super_block *sb)
 196{
 197        return security_ops->quotactl(cmds, type, id, sb);
 198}
 199
 200int security_quota_on(struct dentry *dentry)
 201{
 202        return security_ops->quota_on(dentry);
 203}
 204
 205int security_syslog(int type)
 206{
 207        return security_ops->syslog(type);
 208}
 209
 210int security_settime(struct timespec *ts, struct timezone *tz)
 211{
 212        return security_ops->settime(ts, tz);
 213}
 214
 215int security_vm_enough_memory(long pages)
 216{
 217        WARN_ON(current->mm == NULL);
 218        return security_ops->vm_enough_memory(current->mm, pages);
 219}
 220
 221int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 222{
 223        WARN_ON(mm == NULL);
 224        return security_ops->vm_enough_memory(mm, pages);
 225}
 226
 227int security_vm_enough_memory_kern(long pages)
 228{
 229        /* If current->mm is a kernel thread then we will pass NULL,
 230           for this specific case that is fine */
 231        return security_ops->vm_enough_memory(current->mm, pages);
 232}
 233
 234int security_bprm_set_creds(struct linux_binprm *bprm)
 235{
 236        return security_ops->bprm_set_creds(bprm);
 237}
 238
 239int security_bprm_check(struct linux_binprm *bprm)
 240{
 241        return security_ops->bprm_check_security(bprm);
 242}
 243
 244void security_bprm_committing_creds(struct linux_binprm *bprm)
 245{
 246        security_ops->bprm_committing_creds(bprm);
 247}
 248
 249void security_bprm_committed_creds(struct linux_binprm *bprm)
 250{
 251        security_ops->bprm_committed_creds(bprm);
 252}
 253
 254int security_bprm_secureexec(struct linux_binprm *bprm)
 255{
 256        return security_ops->bprm_secureexec(bprm);
 257}
 258
 259int security_sb_alloc(struct super_block *sb)
 260{
 261        return security_ops->sb_alloc_security(sb);
 262}
 263
 264void security_sb_free(struct super_block *sb)
 265{
 266        security_ops->sb_free_security(sb);
 267}
 268
 269int security_sb_copy_data(char *orig, char *copy)
 270{
 271        return security_ops->sb_copy_data(orig, copy);
 272}
 273EXPORT_SYMBOL(security_sb_copy_data);
 274
 275int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
 276{
 277        return security_ops->sb_kern_mount(sb, flags, data);
 278}
 279
 280int security_sb_show_options(struct seq_file *m, struct super_block *sb)
 281{
 282        return security_ops->sb_show_options(m, sb);
 283}
 284
 285int security_sb_statfs(struct dentry *dentry)
 286{
 287        return security_ops->sb_statfs(dentry);
 288}
 289
 290int security_sb_mount(char *dev_name, struct path *path,
 291                       char *type, unsigned long flags, void *data)
 292{
 293        return security_ops->sb_mount(dev_name, path, type, flags, data);
 294}
 295
 296int security_sb_check_sb(struct vfsmount *mnt, struct path *path)
 297{
 298        return security_ops->sb_check_sb(mnt, path);
 299}
 300
 301int security_sb_umount(struct vfsmount *mnt, int flags)
 302{
 303        return security_ops->sb_umount(mnt, flags);
 304}
 305
 306void security_sb_umount_close(struct vfsmount *mnt)
 307{
 308        security_ops->sb_umount_close(mnt);
 309}
 310
 311void security_sb_umount_busy(struct vfsmount *mnt)
 312{
 313        security_ops->sb_umount_busy(mnt);
 314}
 315
 316void security_sb_post_remount(struct vfsmount *mnt, unsigned long flags, void *data)
 317{
 318        security_ops->sb_post_remount(mnt, flags, data);
 319}
 320
 321void security_sb_post_addmount(struct vfsmount *mnt, struct path *mountpoint)
 322{
 323        security_ops->sb_post_addmount(mnt, mountpoint);
 324}
 325
 326int security_sb_pivotroot(struct path *old_path, struct path *new_path)
 327{
 328        return security_ops->sb_pivotroot(old_path, new_path);
 329}
 330
 331void security_sb_post_pivotroot(struct path *old_path, struct path *new_path)
 332{
 333        security_ops->sb_post_pivotroot(old_path, new_path);
 334}
 335
 336int security_sb_set_mnt_opts(struct super_block *sb,
 337                                struct security_mnt_opts *opts)
 338{
 339        return security_ops->sb_set_mnt_opts(sb, opts);
 340}
 341EXPORT_SYMBOL(security_sb_set_mnt_opts);
 342
 343void security_sb_clone_mnt_opts(const struct super_block *oldsb,
 344                                struct super_block *newsb)
 345{
 346        security_ops->sb_clone_mnt_opts(oldsb, newsb);
 347}
 348EXPORT_SYMBOL(security_sb_clone_mnt_opts);
 349
 350int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
 351{
 352        return security_ops->sb_parse_opts_str(options, opts);
 353}
 354EXPORT_SYMBOL(security_sb_parse_opts_str);
 355
 356int security_inode_alloc(struct inode *inode)
 357{
 358        inode->i_security = NULL;
 359        return security_ops->inode_alloc_security(inode);
 360}
 361
 362void security_inode_free(struct inode *inode)
 363{
 364        security_ops->inode_free_security(inode);
 365}
 366
 367int security_inode_init_security(struct inode *inode, struct inode *dir,
 368                                  char **name, void **value, size_t *len)
 369{
 370        if (unlikely(IS_PRIVATE(inode)))
 371                return -EOPNOTSUPP;
 372        return security_ops->inode_init_security(inode, dir, name, value, len);
 373}
 374EXPORT_SYMBOL(security_inode_init_security);
 375
 376#ifdef CONFIG_SECURITY_PATH
 377int security_path_mknod(struct path *path, struct dentry *dentry, int mode,
 378                        unsigned int dev)
 379{
 380        if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 381                return 0;
 382        return security_ops->path_mknod(path, dentry, mode, dev);
 383}
 384EXPORT_SYMBOL(security_path_mknod);
 385
 386int security_path_mkdir(struct path *path, struct dentry *dentry, int mode)
 387{
 388        if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 389                return 0;
 390        return security_ops->path_mkdir(path, dentry, mode);
 391}
 392
 393int security_path_rmdir(struct path *path, struct dentry *dentry)
 394{
 395        if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 396                return 0;
 397        return security_ops->path_rmdir(path, dentry);
 398}
 399
 400int security_path_unlink(struct path *path, struct dentry *dentry)
 401{
 402        if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 403                return 0;
 404        return security_ops->path_unlink(path, dentry);
 405}
 406
 407int security_path_symlink(struct path *path, struct dentry *dentry,
 408                          const char *old_name)
 409{
 410        if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 411                return 0;
 412        return security_ops->path_symlink(path, dentry, old_name);
 413}
 414
 415int security_path_link(struct dentry *old_dentry, struct path *new_dir,
 416                       struct dentry *new_dentry)
 417{
 418        if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
 419                return 0;
 420        return security_ops->path_link(old_dentry, new_dir, new_dentry);
 421}
 422
 423int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
 424                         struct path *new_dir, struct dentry *new_dentry)
 425{
 426        if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
 427                     (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
 428                return 0;
 429        return security_ops->path_rename(old_dir, old_dentry, new_dir,
 430                                         new_dentry);
 431}
 432
 433int security_path_truncate(struct path *path, loff_t length,
 434                           unsigned int time_attrs)
 435{
 436        if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 437                return 0;
 438        return security_ops->path_truncate(path, length, time_attrs);
 439}
 440#endif
 441
 442int security_inode_create(struct inode *dir, struct dentry *dentry, int mode)
 443{
 444        if (unlikely(IS_PRIVATE(dir)))
 445                return 0;
 446        return security_ops->inode_create(dir, dentry, mode);
 447}
 448
 449int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 450                         struct dentry *new_dentry)
 451{
 452        if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
 453                return 0;
 454        return security_ops->inode_link(old_dentry, dir, new_dentry);
 455}
 456
 457int security_inode_unlink(struct inode *dir, struct dentry *dentry)
 458{
 459        if (unlikely(IS_PRIVATE(dentry->d_inode)))
 460                return 0;
 461        return security_ops->inode_unlink(dir, dentry);
 462}
 463
 464int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 465                            const char *old_name)
 466{
 467        if (unlikely(IS_PRIVATE(dir)))
 468                return 0;
 469        return security_ops->inode_symlink(dir, dentry, old_name);
 470}
 471
 472int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode)
 473{
 474        if (unlikely(IS_PRIVATE(dir)))
 475                return 0;
 476        return security_ops->inode_mkdir(dir, dentry, mode);
 477}
 478
 479int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
 480{
 481        if (unlikely(IS_PRIVATE(dentry->d_inode)))
 482                return 0;
 483        return security_ops->inode_rmdir(dir, dentry);
 484}
 485
 486int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
 487{
 488        if (unlikely(IS_PRIVATE(dir)))
 489                return 0;
 490        return security_ops->inode_mknod(dir, dentry, mode, dev);
 491}
 492
 493int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 494                           struct inode *new_dir, struct dentry *new_dentry)
 495{
 496        if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
 497            (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
 498                return 0;
 499        return security_ops->inode_rename(old_dir, old_dentry,
 500                                           new_dir, new_dentry);
 501}
 502
 503int security_inode_readlink(struct dentry *dentry)
 504{
 505        if (unlikely(IS_PRIVATE(dentry->d_inode)))
 506                return 0;
 507        return security_ops->inode_readlink(dentry);
 508}
 509
 510int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd)
 511{
 512        if (unlikely(IS_PRIVATE(dentry->d_inode)))
 513                return 0;
 514        return security_ops->inode_follow_link(dentry, nd);
 515}
 516
 517int security_inode_permission(struct inode *inode, int mask)
 518{
 519        if (unlikely(IS_PRIVATE(inode)))
 520                return 0;
 521        return security_ops->inode_permission(inode, mask);
 522}
 523
 524int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
 525{
 526        if (unlikely(IS_PRIVATE(dentry->d_inode)))
 527                return 0;
 528        return security_ops->inode_setattr(dentry, attr);
 529}
 530EXPORT_SYMBOL_GPL(security_inode_setattr);
 531
 532int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
 533{
 534        if (unlikely(IS_PRIVATE(dentry->d_inode)))
 535                return 0;
 536        return security_ops->inode_getattr(mnt, dentry);
 537}
 538
 539void security_inode_delete(struct inode *inode)
 540{
 541        if (unlikely(IS_PRIVATE(inode)))
 542                return;
 543        security_ops->inode_delete(inode);
 544}
 545
 546int security_inode_setxattr(struct dentry *dentry, const char *name,
 547                            const void *value, size_t size, int flags)
 548{
 549        if (unlikely(IS_PRIVATE(dentry->d_inode)))
 550                return 0;
 551        return security_ops->inode_setxattr(dentry, name, value, size, flags);
 552}
 553
 554void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 555                                  const void *value, size_t size, int flags)
 556{
 557        if (unlikely(IS_PRIVATE(dentry->d_inode)))
 558                return;
 559        security_ops->inode_post_setxattr(dentry, name, value, size, flags);
 560}
 561
 562int security_inode_getxattr(struct dentry *dentry, const char *name)
 563{
 564        if (unlikely(IS_PRIVATE(dentry->d_inode)))
 565                return 0;
 566        return security_ops->inode_getxattr(dentry, name);
 567}
 568
 569int security_inode_listxattr(struct dentry *dentry)
 570{
 571        if (unlikely(IS_PRIVATE(dentry->d_inode)))
 572                return 0;
 573        return security_ops->inode_listxattr(dentry);
 574}
 575
 576int security_inode_removexattr(struct dentry *dentry, const char *name)
 577{
 578        if (unlikely(IS_PRIVATE(dentry->d_inode)))
 579                return 0;
 580        return security_ops->inode_removexattr(dentry, name);
 581}
 582
 583int security_inode_need_killpriv(struct dentry *dentry)
 584{
 585        return security_ops->inode_need_killpriv(dentry);
 586}
 587
 588int security_inode_killpriv(struct dentry *dentry)
 589{
 590        return security_ops->inode_killpriv(dentry);
 591}
 592
 593int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
 594{
 595        if (unlikely(IS_PRIVATE(inode)))
 596                return 0;
 597        return security_ops->inode_getsecurity(inode, name, buffer, alloc);
 598}
 599
 600int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 601{
 602        if (unlikely(IS_PRIVATE(inode)))
 603                return 0;
 604        return security_ops->inode_setsecurity(inode, name, value, size, flags);
 605}
 606
 607int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 608{
 609        if (unlikely(IS_PRIVATE(inode)))
 610                return 0;
 611        return security_ops->inode_listsecurity(inode, buffer, buffer_size);
 612}
 613
 614void security_inode_getsecid(const struct inode *inode, u32 *secid)
 615{
 616        security_ops->inode_getsecid(inode, secid);
 617}
 618
 619int security_file_permission(struct file *file, int mask)
 620{
 621        return security_ops->file_permission(file, mask);
 622}
 623
 624int security_file_alloc(struct file *file)
 625{
 626        return security_ops->file_alloc_security(file);
 627}
 628
 629void security_file_free(struct file *file)
 630{
 631        security_ops->file_free_security(file);
 632}
 633
 634int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 635{
 636        return security_ops->file_ioctl(file, cmd, arg);
 637}
 638
 639int security_file_mmap(struct file *file, unsigned long reqprot,
 640                        unsigned long prot, unsigned long flags,
 641                        unsigned long addr, unsigned long addr_only)
 642{
 643        return security_ops->file_mmap(file, reqprot, prot, flags, addr, addr_only);
 644}
 645
 646int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 647                            unsigned long prot)
 648{
 649        return security_ops->file_mprotect(vma, reqprot, prot);
 650}
 651
 652int security_file_lock(struct file *file, unsigned int cmd)
 653{
 654        return security_ops->file_lock(file, cmd);
 655}
 656
 657int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
 658{
 659        return security_ops->file_fcntl(file, cmd, arg);
 660}
 661
 662int security_file_set_fowner(struct file *file)
 663{
 664        return security_ops->file_set_fowner(file);
 665}
 666
 667int security_file_send_sigiotask(struct task_struct *tsk,
 668                                  struct fown_struct *fown, int sig)
 669{
 670        return security_ops->file_send_sigiotask(tsk, fown, sig);
 671}
 672
 673int security_file_receive(struct file *file)
 674{
 675        return security_ops->file_receive(file);
 676}
 677
 678int security_dentry_open(struct file *file, const struct cred *cred)
 679{
 680        return security_ops->dentry_open(file, cred);
 681}
 682
 683int security_task_create(unsigned long clone_flags)
 684{
 685        return security_ops->task_create(clone_flags);
 686}
 687
 688void security_cred_free(struct cred *cred)
 689{
 690        security_ops->cred_free(cred);
 691}
 692
 693int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
 694{
 695        return security_ops->cred_prepare(new, old, gfp);
 696}
 697
 698void security_commit_creds(struct cred *new, const struct cred *old)
 699{
 700        security_ops->cred_commit(new, old);
 701}
 702
 703int security_kernel_act_as(struct cred *new, u32 secid)
 704{
 705        return security_ops->kernel_act_as(new, secid);
 706}
 707
 708int security_kernel_create_files_as(struct cred *new, struct inode *inode)
 709{
 710        return security_ops->kernel_create_files_as(new, inode);
 711}
 712
 713int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags)
 714{
 715        return security_ops->task_setuid(id0, id1, id2, flags);
 716}
 717
 718int security_task_fix_setuid(struct cred *new, const struct cred *old,
 719                             int flags)
 720{
 721        return security_ops->task_fix_setuid(new, old, flags);
 722}
 723
 724int security_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags)
 725{
 726        return security_ops->task_setgid(id0, id1, id2, flags);
 727}
 728
 729int security_task_setpgid(struct task_struct *p, pid_t pgid)
 730{
 731        return security_ops->task_setpgid(p, pgid);
 732}
 733
 734int security_task_getpgid(struct task_struct *p)
 735{
 736        return security_ops->task_getpgid(p);
 737}
 738
 739int security_task_getsid(struct task_struct *p)
 740{
 741        return security_ops->task_getsid(p);
 742}
 743
 744void security_task_getsecid(struct task_struct *p, u32 *secid)
 745{
 746        security_ops->task_getsecid(p, secid);
 747}
 748EXPORT_SYMBOL(security_task_getsecid);
 749
 750int security_task_setgroups(struct group_info *group_info)
 751{
 752        return security_ops->task_setgroups(group_info);
 753}
 754
 755int security_task_setnice(struct task_struct *p, int nice)
 756{
 757        return security_ops->task_setnice(p, nice);
 758}
 759
 760int security_task_setioprio(struct task_struct *p, int ioprio)
 761{
 762        return security_ops->task_setioprio(p, ioprio);
 763}
 764
 765int security_task_getioprio(struct task_struct *p)
 766{
 767        return security_ops->task_getioprio(p);
 768}
 769
 770int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim)
 771{
 772        return security_ops->task_setrlimit(resource, new_rlim);
 773}
 774
 775int security_task_setscheduler(struct task_struct *p,
 776                                int policy, struct sched_param *lp)
 777{
 778        return security_ops->task_setscheduler(p, policy, lp);
 779}
 780
 781int security_task_getscheduler(struct task_struct *p)
 782{
 783        return security_ops->task_getscheduler(p);
 784}
 785
 786int security_task_movememory(struct task_struct *p)
 787{
 788        return security_ops->task_movememory(p);
 789}
 790
 791int security_task_kill(struct task_struct *p, struct siginfo *info,
 792                        int sig, u32 secid)
 793{
 794        return security_ops->task_kill(p, info, sig, secid);
 795}
 796
 797int security_task_wait(struct task_struct *p)
 798{
 799        return security_ops->task_wait(p);
 800}
 801
 802int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 803                         unsigned long arg4, unsigned long arg5)
 804{
 805        return security_ops->task_prctl(option, arg2, arg3, arg4, arg5);
 806}
 807
 808void security_task_to_inode(struct task_struct *p, struct inode *inode)
 809{
 810        security_ops->task_to_inode(p, inode);
 811}
 812
 813int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
 814{
 815        return security_ops->ipc_permission(ipcp, flag);
 816}
 817
 818void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
 819{
 820        security_ops->ipc_getsecid(ipcp, secid);
 821}
 822
 823int security_msg_msg_alloc(struct msg_msg *msg)
 824{
 825        return security_ops->msg_msg_alloc_security(msg);
 826}
 827
 828void security_msg_msg_free(struct msg_msg *msg)
 829{
 830        security_ops->msg_msg_free_security(msg);
 831}
 832
 833int security_msg_queue_alloc(struct msg_queue *msq)
 834{
 835        return security_ops->msg_queue_alloc_security(msq);
 836}
 837
 838void security_msg_queue_free(struct msg_queue *msq)
 839{
 840        security_ops->msg_queue_free_security(msq);
 841}
 842
 843int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
 844{
 845        return security_ops->msg_queue_associate(msq, msqflg);
 846}
 847
 848int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
 849{
 850        return security_ops->msg_queue_msgctl(msq, cmd);
 851}
 852
 853int security_msg_queue_msgsnd(struct msg_queue *msq,
 854                               struct msg_msg *msg, int msqflg)
 855{
 856        return security_ops->msg_queue_msgsnd(msq, msg, msqflg);
 857}
 858
 859int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
 860                               struct task_struct *target, long type, int mode)
 861{
 862        return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode);
 863}
 864
 865int security_shm_alloc(struct shmid_kernel *shp)
 866{
 867        return security_ops->shm_alloc_security(shp);
 868}
 869
 870void security_shm_free(struct shmid_kernel *shp)
 871{
 872        security_ops->shm_free_security(shp);
 873}
 874
 875int security_shm_associate(struct shmid_kernel *shp, int shmflg)
 876{
 877        return security_ops->shm_associate(shp, shmflg);
 878}
 879
 880int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
 881{
 882        return security_ops->shm_shmctl(shp, cmd);
 883}
 884
 885int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
 886{
 887        return security_ops->shm_shmat(shp, shmaddr, shmflg);
 888}
 889
 890int security_sem_alloc(struct sem_array *sma)
 891{
 892        return security_ops->sem_alloc_security(sma);
 893}
 894
 895void security_sem_free(struct sem_array *sma)
 896{
 897        security_ops->sem_free_security(sma);
 898}
 899
 900int security_sem_associate(struct sem_array *sma, int semflg)
 901{
 902        return security_ops->sem_associate(sma, semflg);
 903}
 904
 905int security_sem_semctl(struct sem_array *sma, int cmd)
 906{
 907        return security_ops->sem_semctl(sma, cmd);
 908}
 909
 910int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
 911                        unsigned nsops, int alter)
 912{
 913        return security_ops->sem_semop(sma, sops, nsops, alter);
 914}
 915
 916void security_d_instantiate(struct dentry *dentry, struct inode *inode)
 917{
 918        if (unlikely(inode && IS_PRIVATE(inode)))
 919                return;
 920        security_ops->d_instantiate(dentry, inode);
 921}
 922EXPORT_SYMBOL(security_d_instantiate);
 923
 924int security_getprocattr(struct task_struct *p, char *name, char **value)
 925{
 926        return security_ops->getprocattr(p, name, value);
 927}
 928
 929int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
 930{
 931        return security_ops->setprocattr(p, name, value, size);
 932}
 933
 934int security_netlink_send(struct sock *sk, struct sk_buff *skb)
 935{
 936        return security_ops->netlink_send(sk, skb);
 937}
 938
 939int security_netlink_recv(struct sk_buff *skb, int cap)
 940{
 941        return security_ops->netlink_recv(skb, cap);
 942}
 943EXPORT_SYMBOL(security_netlink_recv);
 944
 945int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
 946{
 947        return security_ops->secid_to_secctx(secid, secdata, seclen);
 948}
 949EXPORT_SYMBOL(security_secid_to_secctx);
 950
 951int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
 952{
 953        return security_ops->secctx_to_secid(secdata, seclen, secid);
 954}
 955EXPORT_SYMBOL(security_secctx_to_secid);
 956
 957void security_release_secctx(char *secdata, u32 seclen)
 958{
 959        security_ops->release_secctx(secdata, seclen);
 960}
 961EXPORT_SYMBOL(security_release_secctx);
 962
 963#ifdef CONFIG_SECURITY_NETWORK
 964
 965int security_unix_stream_connect(struct socket *sock, struct socket *other,
 966                                 struct sock *newsk)
 967{
 968        return security_ops->unix_stream_connect(sock, other, newsk);
 969}
 970EXPORT_SYMBOL(security_unix_stream_connect);
 971
 972int security_unix_may_send(struct socket *sock,  struct socket *other)
 973{
 974        return security_ops->unix_may_send(sock, other);
 975}
 976EXPORT_SYMBOL(security_unix_may_send);
 977
 978int security_socket_create(int family, int type, int protocol, int kern)
 979{
 980        return security_ops->socket_create(family, type, protocol, kern);
 981}
 982
 983int security_socket_post_create(struct socket *sock, int family,
 984                                int type, int protocol, int kern)
 985{
 986        return security_ops->socket_post_create(sock, family, type,
 987                                                protocol, kern);
 988}
 989
 990int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
 991{
 992        return security_ops->socket_bind(sock, address, addrlen);
 993}
 994
 995int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
 996{
 997        return security_ops->socket_connect(sock, address, addrlen);
 998}
 999
1000int security_socket_listen(struct socket *sock, int backlog)
1001{
1002        return security_ops->socket_listen(sock, backlog);
1003}
1004
1005int security_socket_accept(struct socket *sock, struct socket *newsock)
1006{
1007        return security_ops->socket_accept(sock, newsock);
1008}
1009
1010void security_socket_post_accept(struct socket *sock, struct socket *newsock)
1011{
1012        security_ops->socket_post_accept(sock, newsock);
1013}
1014
1015int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1016{
1017        return security_ops->socket_sendmsg(sock, msg, size);
1018}
1019
1020int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1021                            int size, int flags)
1022{
1023        return security_ops->socket_recvmsg(sock, msg, size, flags);
1024}
1025
1026int security_socket_getsockname(struct socket *sock)
1027{
1028        return security_ops->socket_getsockname(sock);
1029}
1030
1031int security_socket_getpeername(struct socket *sock)
1032{
1033        return security_ops->socket_getpeername(sock);
1034}
1035
1036int security_socket_getsockopt(struct socket *sock, int level, int optname)
1037{
1038        return security_ops->socket_getsockopt(sock, level, optname);
1039}
1040
1041int security_socket_setsockopt(struct socket *sock, int level, int optname)
1042{
1043        return security_ops->socket_setsockopt(sock, level, optname);
1044}
1045
1046int security_socket_shutdown(struct socket *sock, int how)
1047{
1048        return security_ops->socket_shutdown(sock, how);
1049}
1050
1051int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1052{
1053        return security_ops->socket_sock_rcv_skb(sk, skb);
1054}
1055EXPORT_SYMBOL(security_sock_rcv_skb);
1056
1057int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1058                                      int __user *optlen, unsigned len)
1059{
1060        return security_ops->socket_getpeersec_stream(sock, optval, optlen, len);
1061}
1062
1063int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1064{
1065        return security_ops->socket_getpeersec_dgram(sock, skb, secid);
1066}
1067EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1068
1069int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1070{
1071        return security_ops->sk_alloc_security(sk, family, priority);
1072}
1073
1074void security_sk_free(struct sock *sk)
1075{
1076        security_ops->sk_free_security(sk);
1077}
1078
1079void security_sk_clone(const struct sock *sk, struct sock *newsk)
1080{
1081        security_ops->sk_clone_security(sk, newsk);
1082}
1083
1084void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1085{
1086        security_ops->sk_getsecid(sk, &fl->secid);
1087}
1088EXPORT_SYMBOL(security_sk_classify_flow);
1089
1090void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1091{
1092        security_ops->req_classify_flow(req, fl);
1093}
1094EXPORT_SYMBOL(security_req_classify_flow);
1095
1096void security_sock_graft(struct sock *sk, struct socket *parent)
1097{
1098        security_ops->sock_graft(sk, parent);
1099}
1100EXPORT_SYMBOL(security_sock_graft);
1101
1102int security_inet_conn_request(struct sock *sk,
1103                        struct sk_buff *skb, struct request_sock *req)
1104{
1105        return security_ops->inet_conn_request(sk, skb, req);
1106}
1107EXPORT_SYMBOL(security_inet_conn_request);
1108
1109void security_inet_csk_clone(struct sock *newsk,
1110                        const struct request_sock *req)
1111{
1112        security_ops->inet_csk_clone(newsk, req);
1113}
1114
1115void security_inet_conn_established(struct sock *sk,
1116                        struct sk_buff *skb)
1117{
1118        security_ops->inet_conn_established(sk, skb);
1119}
1120
1121#endif  /* CONFIG_SECURITY_NETWORK */
1122
1123#ifdef CONFIG_SECURITY_NETWORK_XFRM
1124
1125int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
1126{
1127        return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx);
1128}
1129EXPORT_SYMBOL(security_xfrm_policy_alloc);
1130
1131int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1132                              struct xfrm_sec_ctx **new_ctxp)
1133{
1134        return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp);
1135}
1136
1137void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1138{
1139        security_ops->xfrm_policy_free_security(ctx);
1140}
1141EXPORT_SYMBOL(security_xfrm_policy_free);
1142
1143int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1144{
1145        return security_ops->xfrm_policy_delete_security(ctx);
1146}
1147
1148int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx)
1149{
1150        return security_ops->xfrm_state_alloc_security(x, sec_ctx, 0);
1151}
1152EXPORT_SYMBOL(security_xfrm_state_alloc);
1153
1154int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1155                                      struct xfrm_sec_ctx *polsec, u32 secid)
1156{
1157        if (!polsec)
1158                return 0;
1159        /*
1160         * We want the context to be taken from secid which is usually
1161         * from the sock.
1162         */
1163        return security_ops->xfrm_state_alloc_security(x, NULL, secid);
1164}
1165
1166int security_xfrm_state_delete(struct xfrm_state *x)
1167{
1168        return security_ops->xfrm_state_delete_security(x);
1169}
1170EXPORT_SYMBOL(security_xfrm_state_delete);
1171
1172void security_xfrm_state_free(struct xfrm_state *x)
1173{
1174        security_ops->xfrm_state_free_security(x);
1175}
1176
1177int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1178{
1179        return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir);
1180}
1181
1182int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1183                                       struct xfrm_policy *xp, struct flowi *fl)
1184{
1185        return security_ops->xfrm_state_pol_flow_match(x, xp, fl);
1186}
1187
1188int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1189{
1190        return security_ops->xfrm_decode_session(skb, secid, 1);
1191}
1192
1193void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1194{
1195        int rc = security_ops->xfrm_decode_session(skb, &fl->secid, 0);
1196
1197        BUG_ON(rc);
1198}
1199EXPORT_SYMBOL(security_skb_classify_flow);
1200
1201#endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1202
1203#ifdef CONFIG_KEYS
1204
1205int security_key_alloc(struct key *key, const struct cred *cred,
1206                       unsigned long flags)
1207{
1208        return security_ops->key_alloc(key, cred, flags);
1209}
1210
1211void security_key_free(struct key *key)
1212{
1213        security_ops->key_free(key);
1214}
1215
1216int security_key_permission(key_ref_t key_ref,
1217                            const struct cred *cred, key_perm_t perm)
1218{
1219        return security_ops->key_permission(key_ref, cred, perm);
1220}
1221
1222int security_key_getsecurity(struct key *key, char **_buffer)
1223{
1224        return security_ops->key_getsecurity(key, _buffer);
1225}
1226
1227#endif  /* CONFIG_KEYS */
1228
1229#ifdef CONFIG_AUDIT
1230
1231int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1232{
1233        return security_ops->audit_rule_init(field, op, rulestr, lsmrule);
1234}
1235
1236int security_audit_rule_known(struct audit_krule *krule)
1237{
1238        return security_ops->audit_rule_known(krule);
1239}
1240
1241void security_audit_rule_free(void *lsmrule)
1242{
1243        security_ops->audit_rule_free(lsmrule);
1244}
1245
1246int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1247                              struct audit_context *actx)
1248{
1249        return security_ops->audit_rule_match(secid, field, op, lsmrule, actx);
1250}
1251
1252#endif /* CONFIG_AUDIT */
1253