4 * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
5 * Copyright (C) 2001 Greg Kroah-Hartman <greg@kroah.com>
6 * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
7 * Copyright (C) 2001 James Morris <jmorris@intercode.com.au>
8 * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group)
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * Due to this file being licensed under the GPL there is controversy over
16 * whether this permits you to write a module that #includes this file
17 * without placing your module under the GPL. Please consult a lawyer for
18 * advice before doing this.
22 #ifndef __LINUX_SECURITY_H
23 #define __LINUX_SECURITY_H
26 #include <linux/binfmts.h>
27 #include <linux/signal.h>
28 #include <linux/resource.h>
29 #include <linux/sem.h>
30 #include <linux/shm.h>
31 #include <linux/mm.h> /* PAGE_ALIGN */
32 #include <linux/msg.h>
33 #include <linux/sched.h>
34 #include <linux/key.h>
35 #include <linux/xfrm.h>
36 #include <linux/gfp.h>
39 /* Maximum number of letters for an LSM name string */
40 #define SECURITY_NAME_MAX 10
42 /* If capable should audit the security request */
43 #define SECURITY_CAP_NOAUDIT 0
44 #define SECURITY_CAP_AUDIT 1
50 * These functions are in security/capability.c and are used
51 * as the default capabilities functions
53 extern int cap_capable(struct task_struct *tsk, const struct cred *cred,
55 extern int cap_settime(struct timespec *ts, struct timezone *tz);
56 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
57 extern int cap_ptrace_traceme(struct task_struct *parent);
58 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
59 extern int cap_capset(struct cred *new, const struct cred *old,
60 const kernel_cap_t *effective,
61 const kernel_cap_t *inheritable,
62 const kernel_cap_t *permitted);
63 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
64 extern int cap_bprm_secureexec(struct linux_binprm *bprm);
65 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
66 const void *value, size_t size, int flags);
67 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
68 extern int cap_inode_need_killpriv(struct dentry *dentry);
69 extern int cap_inode_killpriv(struct dentry *dentry);
70 extern int cap_file_mmap(struct file *file, unsigned long reqprot,
71 unsigned long prot, unsigned long flags,
72 unsigned long addr, unsigned long addr_only);
73 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
74 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
75 unsigned long arg4, unsigned long arg5);
76 extern int cap_task_setscheduler(struct task_struct *p, int policy, struct sched_param *lp);
77 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
78 extern int cap_task_setnice(struct task_struct *p, int nice);
79 extern int cap_syslog(int type);
80 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
92 struct xfrm_user_sec_ctx;
95 extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
96 extern int cap_netlink_recv(struct sk_buff *skb, int cap);
99 extern unsigned long mmap_min_addr;
100 extern unsigned long dac_mmap_min_addr;
102 #define dac_mmap_min_addr 0UL
106 * Values used in the task_security_ops calls
108 /* setuid or setgid, id0 == uid or gid */
109 #define LSM_SETID_ID 1
111 /* setreuid or setregid, id0 == real, id1 == eff */
112 #define LSM_SETID_RE 2
114 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
115 #define LSM_SETID_RES 4
117 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
118 #define LSM_SETID_FS 8
120 /* forward declares to avoid warnings */
124 /* bprm->unsafe reasons */
125 #define LSM_UNSAFE_SHARE 1
126 #define LSM_UNSAFE_PTRACE 2
127 #define LSM_UNSAFE_PTRACE_CAP 4
131 * If a hint addr is less than mmap_min_addr change hint to be as
132 * low as possible but still greater than mmap_min_addr
134 static inline unsigned long round_hint_to_min(unsigned long hint)
137 if (((void *)hint != NULL) &&
138 (hint < mmap_min_addr))
139 return PAGE_ALIGN(mmap_min_addr);
142 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
143 void __user *buffer, size_t *lenp, loff_t *ppos);
146 #ifdef CONFIG_SECURITY
148 struct security_mnt_opts {
154 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
156 opts->mnt_opts = NULL;
157 opts->mnt_opts_flags = NULL;
158 opts->num_mnt_opts = 0;
161 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
165 for (i = 0; i < opts->num_mnt_opts; i++)
166 kfree(opts->mnt_opts[i]);
167 kfree(opts->mnt_opts);
168 opts->mnt_opts = NULL;
169 kfree(opts->mnt_opts_flags);
170 opts->mnt_opts_flags = NULL;
171 opts->num_mnt_opts = 0;
175 * struct security_operations - main security structure
177 * Security module identifier.
180 * A string that acts as a unique identifeir for the LSM with max number
181 * of characters = SECURITY_NAME_MAX.
183 * Security hooks for program execution operations.
186 * Save security information in the bprm->security field, typically based
187 * on information about the bprm->file, for later use by the apply_creds
188 * hook. This hook may also optionally check permissions (e.g. for
189 * transitions between security domains).
190 * This hook may be called multiple times during a single execve, e.g. for
191 * interpreters. The hook can tell whether it has already been called by
192 * checking to see if @bprm->security is non-NULL. If so, then the hook
193 * may decide either to retain the security information saved earlier or
195 * @bprm contains the linux_binprm structure.
196 * Return 0 if the hook is successful and permission is granted.
197 * @bprm_check_security:
198 * This hook mediates the point when a search for a binary handler will
199 * begin. It allows a check the @bprm->security value which is set in the
200 * preceding set_creds call. The primary difference from set_creds is
201 * that the argv list and envp list are reliably available in @bprm. This
202 * hook may be called multiple times during a single execve; and in each
203 * pass set_creds is called first.
204 * @bprm contains the linux_binprm structure.
205 * Return 0 if the hook is successful and permission is granted.
206 * @bprm_committing_creds:
207 * Prepare to install the new security attributes of a process being
208 * transformed by an execve operation, based on the old credentials
209 * pointed to by @current->cred and the information set in @bprm->cred by
210 * the bprm_set_creds hook. @bprm points to the linux_binprm structure.
211 * This hook is a good place to perform state changes on the process such
212 * as closing open file descriptors to which access will no longer be
213 * granted when the attributes are changed. This is called immediately
214 * before commit_creds().
215 * @bprm_committed_creds:
216 * Tidy up after the installation of the new security attributes of a
217 * process being transformed by an execve operation. The new credentials
218 * have, by this point, been set to @current->cred. @bprm points to the
219 * linux_binprm structure. This hook is a good place to perform state
220 * changes on the process such as clearing out non-inheritable signal
221 * state. This is called immediately after commit_creds().
223 * Return a boolean value (0 or 1) indicating whether a "secure exec"
224 * is required. The flag is passed in the auxiliary table
225 * on the initial stack to the ELF interpreter to indicate whether libc
226 * should enable secure mode.
227 * @bprm contains the linux_binprm structure.
229 * Security hooks for filesystem operations.
231 * @sb_alloc_security:
232 * Allocate and attach a security structure to the sb->s_security field.
233 * The s_security field is initialized to NULL when the structure is
235 * @sb contains the super_block structure to be modified.
236 * Return 0 if operation was successful.
238 * Deallocate and clear the sb->s_security field.
239 * @sb contains the super_block structure to be modified.
241 * Check permission before obtaining filesystem statistics for the @mnt
243 * @dentry is a handle on the superblock for the filesystem.
244 * Return 0 if permission is granted.
246 * Check permission before an object specified by @dev_name is mounted on
247 * the mount point named by @nd. For an ordinary mount, @dev_name
248 * identifies a device if the file system type requires a device. For a
249 * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a
250 * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
251 * pathname of the object being mounted.
252 * @dev_name contains the name for object being mounted.
253 * @path contains the path for mount point object.
254 * @type contains the filesystem type.
255 * @flags contains the mount flags.
256 * @data contains the filesystem-specific data.
257 * Return 0 if permission is granted.
259 * Allow mount option data to be copied prior to parsing by the filesystem,
260 * so that the security module can extract security-specific mount
261 * options cleanly (a filesystem may modify the data e.g. with strsep()).
262 * This also allows the original mount data to be stripped of security-
263 * specific options to avoid having to make filesystems aware of them.
264 * @type the type of filesystem being mounted.
265 * @orig the original mount data copied from userspace.
266 * @copy copied data which will be passed to the security module.
267 * Returns 0 if the copy was successful.
269 * Check permission before the device with superblock @mnt->sb is mounted
270 * on the mount point named by @nd.
271 * @mnt contains the vfsmount for device being mounted.
272 * @path contains the path for the mount point.
273 * Return 0 if permission is granted.
275 * Check permission before the @mnt file system is unmounted.
276 * @mnt contains the mounted file system.
277 * @flags contains the unmount flags, e.g. MNT_FORCE.
278 * Return 0 if permission is granted.
280 * Close any files in the @mnt mounted filesystem that are held open by
281 * the security module. This hook is called during an umount operation
282 * prior to checking whether the filesystem is still busy.
283 * @mnt contains the mounted filesystem.
285 * Handle a failed umount of the @mnt mounted filesystem, e.g. re-opening
286 * any files that were closed by umount_close. This hook is called during
287 * an umount operation if the umount fails after a call to the
289 * @mnt contains the mounted filesystem.
291 * Update the security module's state when a filesystem is remounted.
292 * This hook is only called if the remount was successful.
293 * @mnt contains the mounted file system.
294 * @flags contains the new filesystem flags.
295 * @data contains the filesystem-specific data.
297 * Update the security module's state when a filesystem is mounted.
298 * This hook is called any time a mount is successfully grafetd to
300 * @mnt contains the mounted filesystem.
301 * @mountpoint contains the path for the mount point.
303 * Check permission before pivoting the root filesystem.
304 * @old_path contains the path for the new location of the current root (put_old).
305 * @new_path contains the path for the new root (new_root).
306 * Return 0 if permission is granted.
307 * @sb_post_pivotroot:
308 * Update module state after a successful pivot.
309 * @old_path contains the path for the old root.
310 * @new_path contains the path for the new root.
312 * Set the security relevant mount options used for a superblock
313 * @sb the superblock to set security mount options for
314 * @opts binary data structure containing all lsm mount data
315 * @sb_clone_mnt_opts:
316 * Copy all security options from a given superblock to another
317 * @oldsb old superblock which contain information to clone
318 * @newsb new superblock which needs filled in
319 * @sb_parse_opts_str:
320 * Parse a string of security data filling in the opts structure
321 * @options string containing all mount options known by the LSM
322 * @opts binary data structure usable by the LSM
324 * Security hooks for inode operations.
326 * @inode_alloc_security:
327 * Allocate and attach a security structure to @inode->i_security. The
328 * i_security field is initialized to NULL when the inode structure is
330 * @inode contains the inode structure.
331 * Return 0 if operation was successful.
332 * @inode_free_security:
333 * @inode contains the inode structure.
334 * Deallocate the inode security structure and set @inode->i_security to
336 * @inode_init_security:
337 * Obtain the security attribute name suffix and value to set on a newly
338 * created inode and set up the incore security field for the new inode.
339 * This hook is called by the fs code as part of the inode creation
340 * transaction and provides for atomic labeling of the inode, unlike
341 * the post_create/mkdir/... hooks called by the VFS. The hook function
342 * is expected to allocate the name and value via kmalloc, with the caller
343 * being responsible for calling kfree after using them.
344 * If the security module does not use security attributes or does
345 * not wish to put a security attribute on this particular inode,
346 * then it should return -EOPNOTSUPP to skip this processing.
347 * @inode contains the inode structure of the newly created inode.
348 * @dir contains the inode structure of the parent directory.
349 * @name will be set to the allocated name suffix (e.g. selinux).
350 * @value will be set to the allocated attribute value.
351 * @len will be set to the length of the value.
352 * Returns 0 if @name and @value have been successfully set,
353 * -EOPNOTSUPP if no security attribute is needed, or
354 * -ENOMEM on memory allocation failure.
356 * Check permission to create a regular file.
357 * @dir contains inode structure of the parent of the new file.
358 * @dentry contains the dentry structure for the file to be created.
359 * @mode contains the file mode of the file to be created.
360 * Return 0 if permission is granted.
362 * Check permission before creating a new hard link to a file.
363 * @old_dentry contains the dentry structure for an existing link to the file.
364 * @dir contains the inode structure of the parent directory of the new link.
365 * @new_dentry contains the dentry structure for the new link.
366 * Return 0 if permission is granted.
368 * Check permission before creating a new hard link to a file.
369 * @old_dentry contains the dentry structure for an existing link
371 * @new_dir contains the path structure of the parent directory of
373 * @new_dentry contains the dentry structure for the new link.
374 * Return 0 if permission is granted.
376 * Check the permission to remove a hard link to a file.
377 * @dir contains the inode structure of parent directory of the file.
378 * @dentry contains the dentry structure for file to be unlinked.
379 * Return 0 if permission is granted.
381 * Check the permission to remove a hard link to a file.
382 * @dir contains the path structure of parent directory of the file.
383 * @dentry contains the dentry structure for file to be unlinked.
384 * Return 0 if permission is granted.
386 * Check the permission to create a symbolic link to a file.
387 * @dir contains the inode structure of parent directory of the symbolic link.
388 * @dentry contains the dentry structure of the symbolic link.
389 * @old_name contains the pathname of file.
390 * Return 0 if permission is granted.
392 * Check the permission to create a symbolic link to a file.
393 * @dir contains the path structure of parent directory of
395 * @dentry contains the dentry structure of the symbolic link.
396 * @old_name contains the pathname of file.
397 * Return 0 if permission is granted.
399 * Check permissions to create a new directory in the existing directory
400 * associated with inode strcture @dir.
401 * @dir containst the inode structure of parent of the directory to be created.
402 * @dentry contains the dentry structure of new directory.
403 * @mode contains the mode of new directory.
404 * Return 0 if permission is granted.
406 * Check permissions to create a new directory in the existing directory
407 * associated with path strcture @path.
408 * @dir containst the path structure of parent of the directory
410 * @dentry contains the dentry structure of new directory.
411 * @mode contains the mode of new directory.
412 * Return 0 if permission is granted.
414 * Check the permission to remove a directory.
415 * @dir contains the inode structure of parent of the directory to be removed.
416 * @dentry contains the dentry structure of directory to be removed.
417 * Return 0 if permission is granted.
419 * Check the permission to remove a directory.
420 * @dir contains the path structure of parent of the directory to be
422 * @dentry contains the dentry structure of directory to be removed.
423 * Return 0 if permission is granted.
425 * Check permissions when creating a special file (or a socket or a fifo
426 * file created via the mknod system call). Note that if mknod operation
427 * is being done for a regular file, then the create hook will be called
429 * @dir contains the inode structure of parent of the new file.
430 * @dentry contains the dentry structure of the new file.
431 * @mode contains the mode of the new file.
432 * @dev contains the device number.
433 * Return 0 if permission is granted.
435 * Check permissions when creating a file. Note that this hook is called
436 * even if mknod operation is being done for a regular file.
437 * @dir contains the path structure of parent of the new file.
438 * @dentry contains the dentry structure of the new file.
439 * @mode contains the mode of the new file.
440 * @dev contains the undecoded device number. Use new_decode_dev() to get
441 * the decoded device number.
442 * Return 0 if permission is granted.
444 * Check for permission to rename a file or directory.
445 * @old_dir contains the inode structure for parent of the old link.
446 * @old_dentry contains the dentry structure of the old link.
447 * @new_dir contains the inode structure for parent of the new link.
448 * @new_dentry contains the dentry structure of the new link.
449 * Return 0 if permission is granted.
451 * Check for permission to rename a file or directory.
452 * @old_dir contains the path structure for parent of the old link.
453 * @old_dentry contains the dentry structure of the old link.
454 * @new_dir contains the path structure for parent of the new link.
455 * @new_dentry contains the dentry structure of the new link.
456 * Return 0 if permission is granted.
458 * Check for permission to change DAC's permission of a file or directory.
459 * @dentry contains the dentry structure.
460 * @mnt contains the vfsmnt structure.
461 * @mode contains DAC's mode.
462 * Return 0 if permission is granted.
464 * Check for permission to change owner/group of a file or directory.
465 * @path contains the path structure.
466 * @uid contains new owner's ID.
467 * @gid contains new group's ID.
468 * Return 0 if permission is granted.
470 * Check for permission to change root directory.
471 * @path contains the path structure.
472 * Return 0 if permission is granted.
474 * Check the permission to read the symbolic link.
475 * @dentry contains the dentry structure for the file link.
476 * Return 0 if permission is granted.
477 * @inode_follow_link:
478 * Check permission to follow a symbolic link when looking up a pathname.
479 * @dentry contains the dentry structure for the link.
480 * @nd contains the nameidata structure for the parent directory.
481 * Return 0 if permission is granted.
483 * Check permission before accessing an inode. This hook is called by the
484 * existing Linux permission function, so a security module can use it to
485 * provide additional checking for existing Linux permission checks.
486 * Notice that this hook is called when a file is opened (as well as many
487 * other operations), whereas the file_security_ops permission hook is
488 * called when the actual read/write operations are performed.
489 * @inode contains the inode structure to check.
490 * @mask contains the permission mask.
491 * @nd contains the nameidata (may be NULL).
492 * Return 0 if permission is granted.
494 * Check permission before setting file attributes. Note that the kernel
495 * call to notify_change is performed from several locations, whenever
496 * file attributes change (such as when a file is truncated, chown/chmod
497 * operations, transferring disk quotas, etc).
498 * @dentry contains the dentry structure for the file.
499 * @attr is the iattr structure containing the new file attributes.
500 * Return 0 if permission is granted.
502 * Check permission before truncating a file.
503 * @path contains the path structure for the file.
504 * @length is the new length of the file.
505 * @time_attrs is the flags passed to do_truncate().
506 * Return 0 if permission is granted.
508 * Check permission before obtaining file attributes.
509 * @mnt is the vfsmount where the dentry was looked up
510 * @dentry contains the dentry structure for the file.
511 * Return 0 if permission is granted.
513 * @inode contains the inode structure for deleted inode.
514 * This hook is called when a deleted inode is released (i.e. an inode
515 * with no hard links has its use count drop to zero). A security module
516 * can use this hook to release any persistent label associated with the
519 * Check permission before setting the extended attributes
520 * @value identified by @name for @dentry.
521 * Return 0 if permission is granted.
522 * @inode_post_setxattr:
523 * Update inode security field after successful setxattr operation.
524 * @value identified by @name for @dentry.
526 * Check permission before obtaining the extended attributes
527 * identified by @name for @dentry.
528 * Return 0 if permission is granted.
530 * Check permission before obtaining the list of extended attribute
532 * Return 0 if permission is granted.
533 * @inode_removexattr:
534 * Check permission before removing the extended attribute
535 * identified by @name for @dentry.
536 * Return 0 if permission is granted.
537 * @inode_getsecurity:
538 * Retrieve a copy of the extended attribute representation of the
539 * security label associated with @name for @inode via @buffer. Note that
540 * @name is the remainder of the attribute name after the security prefix
541 * has been removed. @alloc is used to specify of the call should return a
542 * value via the buffer or just the value length Return size of buffer on
544 * @inode_setsecurity:
545 * Set the security label associated with @name for @inode from the
546 * extended attribute value @value. @size indicates the size of the
547 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
548 * Note that @name is the remainder of the attribute name after the
549 * security. prefix has been removed.
550 * Return 0 on success.
551 * @inode_listsecurity:
552 * Copy the extended attribute names for the security labels
553 * associated with @inode into @buffer. The maximum size of @buffer
554 * is specified by @buffer_size. @buffer may be NULL to request
555 * the size of the buffer required.
556 * Returns number of bytes used/required on success.
557 * @inode_need_killpriv:
558 * Called when an inode has been changed.
559 * @dentry is the dentry being changed.
560 * Return <0 on error to abort the inode change operation.
561 * Return 0 if inode_killpriv does not need to be called.
562 * Return >0 if inode_killpriv does need to be called.
564 * The setuid bit is being removed. Remove similar security labels.
565 * Called with the dentry->d_inode->i_mutex held.
566 * @dentry is the dentry being changed.
567 * Return 0 on success. If error is returned, then the operation
568 * causing setuid bit removal is failed.
570 * Get the secid associated with the node.
571 * @inode contains a pointer to the inode.
572 * @secid contains a pointer to the location where result will be saved.
573 * In case of failure, @secid will be set to zero.
575 * Security hooks for file operations
578 * Check file permissions before accessing an open file. This hook is
579 * called by various operations that read or write files. A security
580 * module can use this hook to perform additional checking on these
581 * operations, e.g. to revalidate permissions on use to support privilege
582 * bracketing or policy changes. Notice that this hook is used when the
583 * actual read/write operations are performed, whereas the
584 * inode_security_ops hook is called when a file is opened (as well as
585 * many other operations).
586 * Caveat: Although this hook can be used to revalidate permissions for
587 * various system call operations that read or write files, it does not
588 * address the revalidation of permissions for memory-mapped files.
589 * Security modules must handle this separately if they need such
591 * @file contains the file structure being accessed.
592 * @mask contains the requested permissions.
593 * Return 0 if permission is granted.
594 * @file_alloc_security:
595 * Allocate and attach a security structure to the file->f_security field.
596 * The security field is initialized to NULL when the structure is first
598 * @file contains the file structure to secure.
599 * Return 0 if the hook is successful and permission is granted.
600 * @file_free_security:
601 * Deallocate and free any security structures stored in file->f_security.
602 * @file contains the file structure being modified.
604 * @file contains the file structure.
605 * @cmd contains the operation to perform.
606 * @arg contains the operational arguments.
607 * Check permission for an ioctl operation on @file. Note that @arg can
608 * sometimes represents a user space pointer; in other cases, it may be a
609 * simple integer value. When @arg represents a user space pointer, it
610 * should never be used by the security module.
611 * Return 0 if permission is granted.
613 * Check permissions for a mmap operation. The @file may be NULL, e.g.
614 * if mapping anonymous memory.
615 * @file contains the file structure for file to map (may be NULL).
616 * @reqprot contains the protection requested by the application.
617 * @prot contains the protection that will be applied by the kernel.
618 * @flags contains the operational flags.
619 * Return 0 if permission is granted.
621 * Check permissions before changing memory access permissions.
622 * @vma contains the memory region to modify.
623 * @reqprot contains the protection requested by the application.
624 * @prot contains the protection that will be applied by the kernel.
625 * Return 0 if permission is granted.
627 * Check permission before performing file locking operations.
628 * Note: this hook mediates both flock and fcntl style locks.
629 * @file contains the file structure.
630 * @cmd contains the posix-translated lock operation to perform
631 * (e.g. F_RDLCK, F_WRLCK).
632 * Return 0 if permission is granted.
634 * Check permission before allowing the file operation specified by @cmd
635 * from being performed on the file @file. Note that @arg can sometimes
636 * represents a user space pointer; in other cases, it may be a simple
637 * integer value. When @arg represents a user space pointer, it should
638 * never be used by the security module.
639 * @file contains the file structure.
640 * @cmd contains the operation to be performed.
641 * @arg contains the operational arguments.
642 * Return 0 if permission is granted.
644 * Save owner security information (typically from current->security) in
645 * file->f_security for later use by the send_sigiotask hook.
646 * @file contains the file structure to update.
647 * Return 0 on success.
648 * @file_send_sigiotask:
649 * Check permission for the file owner @fown to send SIGIO or SIGURG to the
650 * process @tsk. Note that this hook is sometimes called from interrupt.
651 * Note that the fown_struct, @fown, is never outside the context of a
652 * struct file, so the file structure (and associated security information)
653 * can always be obtained:
654 * container_of(fown, struct file, f_owner)
655 * @tsk contains the structure of task receiving signal.
656 * @fown contains the file owner information.
657 * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
658 * Return 0 if permission is granted.
660 * This hook allows security modules to control the ability of a process
661 * to receive an open file descriptor via socket IPC.
662 * @file contains the file structure being received.
663 * Return 0 if permission is granted.
665 * Security hook for dentry
668 * Save open-time permission checking state for later use upon
669 * file_permission, and recheck access if anything has changed
670 * since inode_permission.
672 * Security hooks for task operations.
675 * Check permission before creating a child process. See the clone(2)
676 * manual page for definitions of the @clone_flags.
677 * @clone_flags contains the flags indicating what should be shared.
678 * Return 0 if permission is granted.
680 * @cred points to the credentials.
681 * @gfp indicates the atomicity of any memory allocations.
682 * Only allocate sufficient memory and attach to @cred such that
683 * cred_transfer() will not get ENOMEM.
685 * @cred points to the credentials.
686 * Deallocate and clear the cred->security field in a set of credentials.
688 * @new points to the new credentials.
689 * @old points to the original credentials.
690 * @gfp indicates the atomicity of any memory allocations.
691 * Prepare a new set of credentials by copying the data from the old set.
693 * @new points to the new credentials.
694 * @old points to the original credentials.
695 * Install a new set of credentials.
697 * @new points to the new credentials.
698 * @old points to the original credentials.
699 * Transfer data from original creds to new creds
701 * Set the credentials for a kernel service to act as (subjective context).
702 * @new points to the credentials to be modified.
703 * @secid specifies the security ID to be set
704 * The current task must be the one that nominated @secid.
705 * Return 0 if successful.
706 * @kernel_create_files_as:
707 * Set the file creation context in a set of credentials to be the same as
708 * the objective context of the specified inode.
709 * @new points to the credentials to be modified.
710 * @inode points to the inode to use as a reference.
711 * The current task must be the one that nominated @inode.
712 * Return 0 if successful.
713 * @kernel_module_request:
714 * Ability to trigger the kernel to automatically upcall to userspace for
715 * userspace to load a kernel module with the given name.
716 * @kmod_name name of the module requested by the kernel
717 * Return 0 if successful.
719 * Check permission before setting one or more of the user identity
720 * attributes of the current process. The @flags parameter indicates
721 * which of the set*uid system calls invoked this hook and how to
722 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
723 * definitions at the beginning of this file for the @flags values and
725 * @id0 contains a uid.
726 * @id1 contains a uid.
727 * @id2 contains a uid.
728 * @flags contains one of the LSM_SETID_* values.
729 * Return 0 if permission is granted.
731 * Update the module's state after setting one or more of the user
732 * identity attributes of the current process. The @flags parameter
733 * indicates which of the set*uid system calls invoked this hook. If
734 * @new is the set of credentials that will be installed. Modifications
735 * should be made to this rather than to @current->cred.
736 * @old is the set of credentials that are being replaces
737 * @flags contains one of the LSM_SETID_* values.
738 * Return 0 on success.
740 * Check permission before setting one or more of the group identity
741 * attributes of the current process. The @flags parameter indicates
742 * which of the set*gid system calls invoked this hook and how to
743 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
744 * definitions at the beginning of this file for the @flags values and
746 * @id0 contains a gid.
747 * @id1 contains a gid.
748 * @id2 contains a gid.
749 * @flags contains one of the LSM_SETID_* values.
750 * Return 0 if permission is granted.
752 * Check permission before setting the process group identifier of the
753 * process @p to @pgid.
754 * @p contains the task_struct for process being modified.
755 * @pgid contains the new pgid.
756 * Return 0 if permission is granted.
758 * Check permission before getting the process group identifier of the
760 * @p contains the task_struct for the process.
761 * Return 0 if permission is granted.
763 * Check permission before getting the session identifier of the process
765 * @p contains the task_struct for the process.
766 * Return 0 if permission is granted.
768 * Retrieve the security identifier of the process @p.
769 * @p contains the task_struct for the process and place is into @secid.
770 * In case of failure, @secid will be set to zero.
773 * Check permission before setting the supplementary group set of the
775 * @group_info contains the new group information.
776 * Return 0 if permission is granted.
778 * Check permission before setting the nice value of @p to @nice.
779 * @p contains the task_struct of process.
780 * @nice contains the new nice value.
781 * Return 0 if permission is granted.
783 * Check permission before setting the ioprio value of @p to @ioprio.
784 * @p contains the task_struct of process.
785 * @ioprio contains the new ioprio value
786 * Return 0 if permission is granted.
788 * Check permission before getting the ioprio value of @p.
789 * @p contains the task_struct of process.
790 * Return 0 if permission is granted.
792 * Check permission before setting the resource limits of the current
793 * process for @resource to @new_rlim. The old resource limit values can
794 * be examined by dereferencing (current->signal->rlim + resource).
795 * @resource contains the resource whose limit is being set.
796 * @new_rlim contains the new limits for @resource.
797 * Return 0 if permission is granted.
798 * @task_setscheduler:
799 * Check permission before setting scheduling policy and/or parameters of
800 * process @p based on @policy and @lp.
801 * @p contains the task_struct for process.
802 * @policy contains the scheduling policy.
803 * @lp contains the scheduling parameters.
804 * Return 0 if permission is granted.
805 * @task_getscheduler:
806 * Check permission before obtaining scheduling information for process
808 * @p contains the task_struct for process.
809 * Return 0 if permission is granted.
811 * Check permission before moving memory owned by process @p.
812 * @p contains the task_struct for process.
813 * Return 0 if permission is granted.
815 * Check permission before sending signal @sig to @p. @info can be NULL,
816 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
817 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
818 * from the kernel and should typically be permitted.
819 * SIGIO signals are handled separately by the send_sigiotask hook in
821 * @p contains the task_struct for process.
822 * @info contains the signal information.
823 * @sig contains the signal value.
824 * @secid contains the sid of the process where the signal originated
825 * Return 0 if permission is granted.
827 * Check permission before allowing a process to reap a child process @p
828 * and collect its status information.
829 * @p contains the task_struct for process.
830 * Return 0 if permission is granted.
832 * Check permission before performing a process control operation on the
834 * @option contains the operation.
835 * @arg2 contains a argument.
836 * @arg3 contains a argument.
837 * @arg4 contains a argument.
838 * @arg5 contains a argument.
839 * Return -ENOSYS if no-one wanted to handle this op, any other value to
840 * cause prctl() to return immediately with that value.
842 * Set the security attributes for an inode based on an associated task's
843 * security attributes, e.g. for /proc/pid inodes.
844 * @p contains the task_struct for the task.
845 * @inode contains the inode structure for the inode.
847 * Security hooks for Netlink messaging.
850 * Save security information for a netlink message so that permission
851 * checking can be performed when the message is processed. The security
852 * information can be saved using the eff_cap field of the
853 * netlink_skb_parms structure. Also may be used to provide fine
854 * grained control over message transmission.
855 * @sk associated sock of task sending the message.,
856 * @skb contains the sk_buff structure for the netlink message.
857 * Return 0 if the information was successfully saved and message
858 * is allowed to be transmitted.
860 * Check permission before processing the received netlink message in
862 * @skb contains the sk_buff structure for the netlink message.
863 * @cap indicates the capability required
864 * Return 0 if permission is granted.
866 * Security hooks for Unix domain networking.
868 * @unix_stream_connect:
869 * Check permissions before establishing a Unix domain stream connection
870 * between @sock and @other.
871 * @sock contains the socket structure.
872 * @other contains the peer socket structure.
873 * Return 0 if permission is granted.
875 * Check permissions before connecting or sending datagrams from @sock to
877 * @sock contains the socket structure.
878 * @sock contains the peer socket structure.
879 * Return 0 if permission is granted.
881 * The @unix_stream_connect and @unix_may_send hooks were necessary because
882 * Linux provides an alternative to the conventional file name space for Unix
883 * domain sockets. Whereas binding and connecting to sockets in the file name
884 * space is mediated by the typical file permissions (and caught by the mknod
885 * and permission hooks in inode_security_ops), binding and connecting to
886 * sockets in the abstract name space is completely unmediated. Sufficient
887 * control of Unix domain sockets in the abstract name space isn't possible
888 * using only the socket layer hooks, since we need to know the actual target
889 * socket, which is not looked up until we are inside the af_unix code.
891 * Security hooks for socket operations.
894 * Check permissions prior to creating a new socket.
895 * @family contains the requested protocol family.
896 * @type contains the requested communications type.
897 * @protocol contains the requested protocol.
898 * @kern set to 1 if a kernel socket.
899 * Return 0 if permission is granted.
900 * @socket_post_create:
901 * This hook allows a module to update or allocate a per-socket security
902 * structure. Note that the security field was not added directly to the
903 * socket structure, but rather, the socket security information is stored
904 * in the associated inode. Typically, the inode alloc_security hook will
905 * allocate and and attach security information to
906 * sock->inode->i_security. This hook may be used to update the
907 * sock->inode->i_security field with additional information that wasn't
908 * available when the inode was allocated.
909 * @sock contains the newly created socket structure.
910 * @family contains the requested protocol family.
911 * @type contains the requested communications type.
912 * @protocol contains the requested protocol.
913 * @kern set to 1 if a kernel socket.
915 * Check permission before socket protocol layer bind operation is
916 * performed and the socket @sock is bound to the address specified in the
917 * @address parameter.
918 * @sock contains the socket structure.
919 * @address contains the address to bind to.
920 * @addrlen contains the length of address.
921 * Return 0 if permission is granted.
923 * Check permission before socket protocol layer connect operation
924 * attempts to connect socket @sock to a remote address, @address.
925 * @sock contains the socket structure.
926 * @address contains the address of remote endpoint.
927 * @addrlen contains the length of address.
928 * Return 0 if permission is granted.
930 * Check permission before socket protocol layer listen operation.
931 * @sock contains the socket structure.
932 * @backlog contains the maximum length for the pending connection queue.
933 * Return 0 if permission is granted.
935 * Check permission before accepting a new connection. Note that the new
936 * socket, @newsock, has been created and some information copied to it,
937 * but the accept operation has not actually been performed.
938 * @sock contains the listening socket structure.
939 * @newsock contains the newly created server socket for connection.
940 * Return 0 if permission is granted.
942 * Check permission before transmitting a message to another socket.
943 * @sock contains the socket structure.
944 * @msg contains the message to be transmitted.
945 * @size contains the size of message.
946 * Return 0 if permission is granted.
948 * Check permission before receiving a message from a socket.
949 * @sock contains the socket structure.
950 * @msg contains the message structure.
951 * @size contains the size of message structure.
952 * @flags contains the operational flags.
953 * Return 0 if permission is granted.
954 * @socket_getsockname:
955 * Check permission before the local address (name) of the socket object
956 * @sock is retrieved.
957 * @sock contains the socket structure.
958 * Return 0 if permission is granted.
959 * @socket_getpeername:
960 * Check permission before the remote address (name) of a socket object
961 * @sock is retrieved.
962 * @sock contains the socket structure.
963 * Return 0 if permission is granted.
964 * @socket_getsockopt:
965 * Check permissions before retrieving the options associated with socket
967 * @sock contains the socket structure.
968 * @level contains the protocol level to retrieve option from.
969 * @optname contains the name of option to retrieve.
970 * Return 0 if permission is granted.
971 * @socket_setsockopt:
972 * Check permissions before setting the options associated with socket
974 * @sock contains the socket structure.
975 * @level contains the protocol level to set options for.
976 * @optname contains the name of the option to set.
977 * Return 0 if permission is granted.
979 * Checks permission before all or part of a connection on the socket
980 * @sock is shut down.
981 * @sock contains the socket structure.
982 * @how contains the flag indicating how future sends and receives are handled.
983 * Return 0 if permission is granted.
984 * @socket_sock_rcv_skb:
985 * Check permissions on incoming network packets. This hook is distinct
986 * from Netfilter's IP input hooks since it is the first time that the
987 * incoming sk_buff @skb has been associated with a particular socket, @sk.
988 * Must not sleep inside this hook because some callers hold spinlocks.
989 * @sk contains the sock (not socket) associated with the incoming sk_buff.
990 * @skb contains the incoming network data.
991 * @socket_getpeersec_stream:
992 * This hook allows the security module to provide peer socket security
993 * state for unix or connected tcp sockets to userspace via getsockopt
994 * SO_GETPEERSEC. For tcp sockets this can be meaningful if the
995 * socket is associated with an ipsec SA.
996 * @sock is the local socket.
997 * @optval userspace memory where the security state is to be copied.
998 * @optlen userspace int where the module should copy the actual length
999 * of the security state.
1000 * @len as input is the maximum length to copy to userspace provided
1002 * Return 0 if all is well, otherwise, typical getsockopt return
1004 * @socket_getpeersec_dgram:
1005 * This hook allows the security module to provide peer socket security
1006 * state for udp sockets on a per-packet basis to userspace via
1007 * getsockopt SO_GETPEERSEC. The application must first have indicated
1008 * the IP_PASSSEC option via getsockopt. It can then retrieve the
1009 * security state returned by this hook for a packet via the SCM_SECURITY
1010 * ancillary message type.
1011 * @skb is the skbuff for the packet being queried
1012 * @secdata is a pointer to a buffer in which to copy the security data
1013 * @seclen is the maximum length for @secdata
1014 * Return 0 on success, error on failure.
1015 * @sk_alloc_security:
1016 * Allocate and attach a security structure to the sk->sk_security field,
1017 * which is used to copy security attributes between local stream sockets.
1018 * @sk_free_security:
1019 * Deallocate security structure.
1020 * @sk_clone_security:
1021 * Clone/copy security structure.
1023 * Retrieve the LSM-specific secid for the sock to enable caching of network
1026 * Sets the socket's isec sid to the sock's sid.
1027 * @inet_conn_request:
1028 * Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
1030 * Sets the new child socket's sid to the openreq sid.
1031 * @inet_conn_established:
1032 * Sets the connection's peersid to the secmark on skb.
1033 * @req_classify_flow:
1034 * Sets the flow's sid to the openreq sid.
1036 * Check permissions prior to creating a new TUN device.
1037 * @tun_dev_post_create:
1038 * This hook allows a module to update or allocate a per-socket security
1040 * @sk contains the newly created sock structure.
1042 * Check permissions prior to attaching to a persistent TUN device. This
1043 * hook can also be used by the module to update any security state
1044 * associated with the TUN device's sock structure.
1045 * @sk contains the existing sock structure.
1047 * Security hooks for XFRM operations.
1049 * @xfrm_policy_alloc_security:
1050 * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
1051 * Database used by the XFRM system.
1052 * @sec_ctx contains the security context information being provided by
1053 * the user-level policy update program (e.g., setkey).
1054 * Allocate a security structure to the xp->security field; the security
1055 * field is initialized to NULL when the xfrm_policy is allocated.
1056 * Return 0 if operation was successful (memory to allocate, legal context)
1057 * @xfrm_policy_clone_security:
1058 * @old_ctx contains an existing xfrm_sec_ctx.
1059 * @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
1060 * Allocate a security structure in new_ctxp that contains the
1061 * information from the old_ctx structure.
1062 * Return 0 if operation was successful (memory to allocate).
1063 * @xfrm_policy_free_security:
1064 * @ctx contains the xfrm_sec_ctx
1065 * Deallocate xp->security.
1066 * @xfrm_policy_delete_security:
1067 * @ctx contains the xfrm_sec_ctx.
1068 * Authorize deletion of xp->security.
1069 * @xfrm_state_alloc_security:
1070 * @x contains the xfrm_state being added to the Security Association
1071 * Database by the XFRM system.
1072 * @sec_ctx contains the security context information being provided by
1073 * the user-level SA generation program (e.g., setkey or racoon).
1074 * @secid contains the secid from which to take the mls portion of the context.
1075 * Allocate a security structure to the x->security field; the security
1076 * field is initialized to NULL when the xfrm_state is allocated. Set the
1077 * context to correspond to either sec_ctx or polsec, with the mls portion
1078 * taken from secid in the latter case.
1079 * Return 0 if operation was successful (memory to allocate, legal context).
1080 * @xfrm_state_free_security:
1081 * @x contains the xfrm_state.
1082 * Deallocate x->security.
1083 * @xfrm_state_delete_security:
1084 * @x contains the xfrm_state.
1085 * Authorize deletion of x->security.
1086 * @xfrm_policy_lookup:
1087 * @ctx contains the xfrm_sec_ctx for which the access control is being
1089 * @fl_secid contains the flow security label that is used to authorize
1090 * access to the policy xp.
1091 * @dir contains the direction of the flow (input or output).
1092 * Check permission when a flow selects a xfrm_policy for processing
1093 * XFRMs on a packet. The hook is called when selecting either a
1094 * per-socket policy or a generic xfrm policy.
1095 * Return 0 if permission is granted, -ESRCH otherwise, or -errno
1097 * @xfrm_state_pol_flow_match:
1098 * @x contains the state to match.
1099 * @xp contains the policy to check for a match.
1100 * @fl contains the flow to check for a match.
1101 * Return 1 if there is a match.
1102 * @xfrm_decode_session:
1103 * @skb points to skb to decode.
1104 * @secid points to the flow key secid to set.
1105 * @ckall says if all xfrms used should be checked for same secid.
1106 * Return 0 if ckall is zero or all xfrms used have the same secid.
1108 * Security hooks affecting all Key Management operations
1111 * Permit allocation of a key and assign security data. Note that key does
1112 * not have a serial number assigned at this point.
1113 * @key points to the key.
1114 * @flags is the allocation flags
1115 * Return 0 if permission is granted, -ve error otherwise.
1117 * Notification of destruction; free security data.
1118 * @key points to the key.
1121 * See whether a specific operational right is granted to a process on a
1123 * @key_ref refers to the key (key pointer + possession attribute bit).
1124 * @cred points to the credentials to provide the context against which to
1125 * evaluate the security data on the key.
1126 * @perm describes the combination of permissions required of this key.
1127 * Return 1 if permission granted, 0 if permission denied and -ve it the
1128 * normal permissions model should be effected.
1130 * Get a textual representation of the security context attached to a key
1131 * for the purposes of honouring KEYCTL_GETSECURITY. This function
1132 * allocates the storage for the NUL-terminated string and the caller
1134 * @key points to the key to be queried.
1135 * @_buffer points to a pointer that should be set to point to the
1136 * resulting string (if no label or an error occurs).
1137 * Return the length of the string (including terminating NUL) or -ve if
1139 * May also return 0 (and a NULL buffer pointer) if there is no label.
1140 * @key_session_to_parent:
1141 * Forcibly assign the session keyring from a process to its parent
1143 * @cred: Pointer to process's credentials
1144 * @parent_cred: Pointer to parent process's credentials
1145 * @keyring: Proposed new session keyring
1146 * Return 0 if permission is granted, -ve error otherwise.
1148 * Security hooks affecting all System V IPC operations.
1151 * Check permissions for access to IPC
1152 * @ipcp contains the kernel IPC permission structure
1153 * @flag contains the desired (requested) permission set
1154 * Return 0 if permission is granted.
1156 * Get the secid associated with the ipc object.
1157 * @ipcp contains the kernel IPC permission structure.
1158 * @secid contains a pointer to the location where result will be saved.
1159 * In case of failure, @secid will be set to zero.
1161 * Security hooks for individual messages held in System V IPC message queues
1162 * @msg_msg_alloc_security:
1163 * Allocate and attach a security structure to the msg->security field.
1164 * The security field is initialized to NULL when the structure is first
1166 * @msg contains the message structure to be modified.
1167 * Return 0 if operation was successful and permission is granted.
1168 * @msg_msg_free_security:
1169 * Deallocate the security structure for this message.
1170 * @msg contains the message structure to be modified.
1172 * Security hooks for System V IPC Message Queues
1174 * @msg_queue_alloc_security:
1175 * Allocate and attach a security structure to the
1176 * msq->q_perm.security field. The security field is initialized to
1177 * NULL when the structure is first created.
1178 * @msq contains the message queue structure to be modified.
1179 * Return 0 if operation was successful and permission is granted.
1180 * @msg_queue_free_security:
1181 * Deallocate security structure for this message queue.
1182 * @msq contains the message queue structure to be modified.
1183 * @msg_queue_associate:
1184 * Check permission when a message queue is requested through the
1185 * msgget system call. This hook is only called when returning the
1186 * message queue identifier for an existing message queue, not when a
1187 * new message queue is created.
1188 * @msq contains the message queue to act upon.
1189 * @msqflg contains the operation control flags.
1190 * Return 0 if permission is granted.
1191 * @msg_queue_msgctl:
1192 * Check permission when a message control operation specified by @cmd
1193 * is to be performed on the message queue @msq.
1194 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
1195 * @msq contains the message queue to act upon. May be NULL.
1196 * @cmd contains the operation to be performed.
1197 * Return 0 if permission is granted.
1198 * @msg_queue_msgsnd:
1199 * Check permission before a message, @msg, is enqueued on the message
1201 * @msq contains the message queue to send message to.
1202 * @msg contains the message to be enqueued.
1203 * @msqflg contains operational flags.
1204 * Return 0 if permission is granted.
1205 * @msg_queue_msgrcv:
1206 * Check permission before a message, @msg, is removed from the message
1207 * queue, @msq. The @target task structure contains a pointer to the
1208 * process that will be receiving the message (not equal to the current
1209 * process when inline receives are being performed).
1210 * @msq contains the message queue to retrieve message from.
1211 * @msg contains the message destination.
1212 * @target contains the task structure for recipient process.
1213 * @type contains the type of message requested.
1214 * @mode contains the operational flags.
1215 * Return 0 if permission is granted.
1217 * Security hooks for System V Shared Memory Segments
1219 * @shm_alloc_security:
1220 * Allocate and attach a security structure to the shp->shm_perm.security
1221 * field. The security field is initialized to NULL when the structure is
1223 * @shp contains the shared memory structure to be modified.
1224 * Return 0 if operation was successful and permission is granted.
1225 * @shm_free_security:
1226 * Deallocate the security struct for this memory segment.
1227 * @shp contains the shared memory structure to be modified.
1229 * Check permission when a shared memory region is requested through the
1230 * shmget system call. This hook is only called when returning the shared
1231 * memory region identifier for an existing region, not when a new shared
1232 * memory region is created.
1233 * @shp contains the shared memory structure to be modified.
1234 * @shmflg contains the operation control flags.
1235 * Return 0 if permission is granted.
1237 * Check permission when a shared memory control operation specified by
1238 * @cmd is to be performed on the shared memory region @shp.
1239 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1240 * @shp contains shared memory structure to be modified.
1241 * @cmd contains the operation to be performed.
1242 * Return 0 if permission is granted.
1244 * Check permissions prior to allowing the shmat system call to attach the
1245 * shared memory segment @shp to the data segment of the calling process.
1246 * The attaching address is specified by @shmaddr.
1247 * @shp contains the shared memory structure to be modified.
1248 * @shmaddr contains the address to attach memory region to.
1249 * @shmflg contains the operational flags.
1250 * Return 0 if permission is granted.
1252 * Security hooks for System V Semaphores
1254 * @sem_alloc_security:
1255 * Allocate and attach a security structure to the sma->sem_perm.security
1256 * field. The security field is initialized to NULL when the structure is
1258 * @sma contains the semaphore structure
1259 * Return 0 if operation was successful and permission is granted.
1260 * @sem_free_security:
1261 * deallocate security struct for this semaphore
1262 * @sma contains the semaphore structure.
1264 * Check permission when a semaphore is requested through the semget
1265 * system call. This hook is only called when returning the semaphore
1266 * identifier for an existing semaphore, not when a new one must be
1268 * @sma contains the semaphore structure.
1269 * @semflg contains the operation control flags.
1270 * Return 0 if permission is granted.
1272 * Check permission when a semaphore operation specified by @cmd is to be
1273 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
1274 * IPC_INFO or SEM_INFO.
1275 * @sma contains the semaphore structure. May be NULL.
1276 * @cmd contains the operation to be performed.
1277 * Return 0 if permission is granted.
1279 * Check permissions before performing operations on members of the
1280 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1282 * @sma contains the semaphore structure.
1283 * @sops contains the operations to perform.
1284 * @nsops contains the number of operations to perform.
1285 * @alter contains the flag indicating whether changes are to be made.
1286 * Return 0 if permission is granted.
1288 * @ptrace_access_check:
1289 * Check permission before allowing the current process to trace the
1291 * Security modules may also want to perform a process tracing check
1292 * during an execve in the set_security or apply_creds hooks of
1293 * tracing check during an execve in the bprm_set_creds hook of
1294 * binprm_security_ops if the process is being traced and its security
1295 * attributes would be changed by the execve.
1296 * @child contains the task_struct structure for the target process.
1297 * @mode contains the PTRACE_MODE flags indicating the form of access.
1298 * Return 0 if permission is granted.
1300 * Check that the @parent process has sufficient permission to trace the
1301 * current process before allowing the current process to present itself
1302 * to the @parent process for tracing.
1303 * The parent process will still have to undergo the ptrace_access_check
1304 * checks before it is allowed to trace this one.
1305 * @parent contains the task_struct structure for debugger process.
1306 * Return 0 if permission is granted.
1308 * Get the @effective, @inheritable, and @permitted capability sets for
1309 * the @target process. The hook may also perform permission checking to
1310 * determine if the current process is allowed to see the capability sets
1311 * of the @target process.
1312 * @target contains the task_struct structure for target process.
1313 * @effective contains the effective capability set.
1314 * @inheritable contains the inheritable capability set.
1315 * @permitted contains the permitted capability set.
1316 * Return 0 if the capability sets were successfully obtained.
1318 * Set the @effective, @inheritable, and @permitted capability sets for
1319 * the current process.
1320 * @new contains the new credentials structure for target process.
1321 * @old contains the current credentials structure for target process.
1322 * @effective contains the effective capability set.
1323 * @inheritable contains the inheritable capability set.
1324 * @permitted contains the permitted capability set.
1325 * Return 0 and update @new if permission is granted.
1327 * Check whether the @tsk process has the @cap capability in the indicated
1329 * @tsk contains the task_struct for the process.
1330 * @cred contains the credentials to use.
1331 * @cap contains the capability <include/linux/capability.h>.
1332 * @audit: Whether to write an audit message or not
1333 * Return 0 if the capability is granted for @tsk.
1335 * Check permission before enabling or disabling process accounting. If
1336 * accounting is being enabled, then @file refers to the open file used to
1337 * store accounting records. If accounting is being disabled, then @file
1339 * @file contains the file structure for the accounting file (may be NULL).
1340 * Return 0 if permission is granted.
1342 * Check permission before accessing the @table sysctl variable in the
1343 * manner specified by @op.
1344 * @table contains the ctl_table structure for the sysctl variable.
1345 * @op contains the operation (001 = search, 002 = write, 004 = read).
1346 * Return 0 if permission is granted.
1348 * Check permission before accessing the kernel message ring or changing
1349 * logging to the console.
1350 * See the syslog(2) manual page for an explanation of the @type values.
1351 * @type contains the type of action.
1352 * Return 0 if permission is granted.
1354 * Check permission to change the system time.
1355 * struct timespec and timezone are defined in include/linux/time.h
1356 * @ts contains new time
1357 * @tz contains new timezone
1358 * Return 0 if permission is granted.
1359 * @vm_enough_memory:
1360 * Check permissions for allocating a new virtual mapping.
1361 * @mm contains the mm struct it is being added to.
1362 * @pages contains the number of pages.
1363 * Return 0 if permission is granted.
1366 * Convert secid to security context.
1367 * @secid contains the security ID.
1368 * @secdata contains the pointer that stores the converted security context.
1370 * Convert security context to secid.
1371 * @secid contains the pointer to the generated security ID.
1372 * @secdata contains the security context.
1375 * Release the security context.
1376 * @secdata contains the security context.
1377 * @seclen contains the length of the security context.
1379 * Security hooks for Audit
1382 * Allocate and initialize an LSM audit rule structure.
1383 * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
1384 * @op contains the operator the rule uses.
1385 * @rulestr contains the context where the rule will be applied to.
1386 * @lsmrule contains a pointer to receive the result.
1387 * Return 0 if @lsmrule has been successfully set,
1388 * -EINVAL in case of an invalid rule.
1390 * @audit_rule_known:
1391 * Specifies whether given @rule contains any fields related to current LSM.
1392 * @rule contains the audit rule of interest.
1393 * Return 1 in case of relation found, 0 otherwise.
1395 * @audit_rule_match:
1396 * Determine if given @secid matches a rule previously approved
1397 * by @audit_rule_known.
1398 * @secid contains the security id in question.
1399 * @field contains the field which relates to current LSM.
1400 * @op contains the operator that will be used for matching.
1401 * @rule points to the audit rule that will be checked against.
1402 * @actx points to the audit context associated with the check.
1403 * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
1406 * Deallocate the LSM audit rule structure previously allocated by
1408 * @rule contains the allocated rule
1410 * @inode_notifysecctx:
1411 * Notify the security module of what the security context of an inode
1412 * should be. Initializes the incore security context managed by the
1413 * security module for this inode. Example usage: NFS client invokes
1414 * this hook to initialize the security context in its incore inode to the
1415 * value provided by the server for the file when the server returned the
1416 * file's attributes to the client.
1418 * Must be called with inode->i_mutex locked.
1420 * @inode we wish to set the security context of.
1421 * @ctx contains the string which we wish to set in the inode.
1422 * @ctxlen contains the length of @ctx.
1425 * Change the security context of an inode. Updates the
1426 * incore security context managed by the security module and invokes the
1427 * fs code as needed (via __vfs_setxattr_noperm) to update any backing
1428 * xattrs that represent the context. Example usage: NFS server invokes
1429 * this hook to change the security context in its incore inode and on the
1430 * backing filesystem to a value provided by the client on a SETATTR
1433 * Must be called with inode->i_mutex locked.
1435 * @dentry contains the inode we wish to set the security context of.
1436 * @ctx contains the string which we wish to set in the inode.
1437 * @ctxlen contains the length of @ctx.
1440 * Returns a string containing all relavent security context information
1442 * @inode we wish to set the security context of.
1443 * @ctx is a pointer in which to place the allocated security context.
1444 * @ctxlen points to the place to put the length of @ctx.
1445 * This is the main security structure.
1447 struct security_operations {
1448 char name[SECURITY_NAME_MAX + 1];
1450 int (*ptrace_access_check) (struct task_struct *child, unsigned int mode);
1451 int (*ptrace_traceme) (struct task_struct *parent);
1452 int (*capget) (struct task_struct *target,
1453 kernel_cap_t *effective,
1454 kernel_cap_t *inheritable, kernel_cap_t *permitted);
1455 int (*capset) (struct cred *new,
1456 const struct cred *old,
1457 const kernel_cap_t *effective,
1458 const kernel_cap_t *inheritable,
1459 const kernel_cap_t *permitted);
1460 int (*capable) (struct task_struct *tsk, const struct cred *cred,
1461 int cap, int audit);
1462 int (*acct) (struct file *file);
1463 int (*sysctl) (struct ctl_table *table, int op);
1464 int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
1465 int (*quota_on) (struct dentry *dentry);
1466 int (*syslog) (int type);
1467 int (*settime) (struct timespec *ts, struct timezone *tz);
1468 int (*vm_enough_memory) (struct mm_struct *mm, long pages);
1470 int (*bprm_set_creds) (struct linux_binprm *bprm);
1471 int (*bprm_check_security) (struct linux_binprm *bprm);
1472 int (*bprm_secureexec) (struct linux_binprm *bprm);
1473 void (*bprm_committing_creds) (struct linux_binprm *bprm);
1474 void (*bprm_committed_creds) (struct linux_binprm *bprm);
1476 int (*sb_alloc_security) (struct super_block *sb);
1477 void (*sb_free_security) (struct super_block *sb);
1478 int (*sb_copy_data) (char *orig, char *copy);
1479 int (*sb_kern_mount) (struct super_block *sb, int flags, void *data);
1480 int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
1481 int (*sb_statfs) (struct dentry *dentry);
1482 int (*sb_mount) (char *dev_name, struct path *path,
1483 char *type, unsigned long flags, void *data);
1484 int (*sb_check_sb) (struct vfsmount *mnt, struct path *path);
1485 int (*sb_umount) (struct vfsmount *mnt, int flags);
1486 void (*sb_umount_close) (struct vfsmount *mnt);
1487 void (*sb_umount_busy) (struct vfsmount *mnt);
1488 void (*sb_post_remount) (struct vfsmount *mnt,
1489 unsigned long flags, void *data);
1490 void (*sb_post_addmount) (struct vfsmount *mnt,
1491 struct path *mountpoint);
1492 int (*sb_pivotroot) (struct path *old_path,
1493 struct path *new_path);
1494 void (*sb_post_pivotroot) (struct path *old_path,
1495 struct path *new_path);
1496 int (*sb_set_mnt_opts) (struct super_block *sb,
1497 struct security_mnt_opts *opts);
1498 void (*sb_clone_mnt_opts) (const struct super_block *oldsb,
1499 struct super_block *newsb);
1500 int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
1502 #ifdef CONFIG_SECURITY_PATH
1503 int (*path_unlink) (struct path *dir, struct dentry *dentry);
1504 int (*path_mkdir) (struct path *dir, struct dentry *dentry, int mode);
1505 int (*path_rmdir) (struct path *dir, struct dentry *dentry);
1506 int (*path_mknod) (struct path *dir, struct dentry *dentry, int mode,
1508 int (*path_truncate) (struct path *path, loff_t length,
1509 unsigned int time_attrs);
1510 int (*path_symlink) (struct path *dir, struct dentry *dentry,
1511 const char *old_name);
1512 int (*path_link) (struct dentry *old_dentry, struct path *new_dir,
1513 struct dentry *new_dentry);
1514 int (*path_rename) (struct path *old_dir, struct dentry *old_dentry,
1515 struct path *new_dir, struct dentry *new_dentry);
1516 int (*path_chmod) (struct dentry *dentry, struct vfsmount *mnt,
1518 int (*path_chown) (struct path *path, uid_t uid, gid_t gid);
1519 int (*path_chroot) (struct path *path);
1522 int (*inode_alloc_security) (struct inode *inode);
1523 void (*inode_free_security) (struct inode *inode);
1524 int (*inode_init_security) (struct inode *inode, struct inode *dir,
1525 char **name, void **value, size_t *len);
1526 int (*inode_create) (struct inode *dir,
1527 struct dentry *dentry, int mode);
1528 int (*inode_link) (struct dentry *old_dentry,
1529 struct inode *dir, struct dentry *new_dentry);
1530 int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
1531 int (*inode_symlink) (struct inode *dir,
1532 struct dentry *dentry, const char *old_name);
1533 int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, int mode);
1534 int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
1535 int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
1536 int mode, dev_t dev);
1537 int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
1538 struct inode *new_dir, struct dentry *new_dentry);
1539 int (*inode_readlink) (struct dentry *dentry);
1540 int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
1541 int (*inode_permission) (struct inode *inode, int mask);
1542 int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
1543 int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
1544 void (*inode_delete) (struct inode *inode);
1545 int (*inode_setxattr) (struct dentry *dentry, const char *name,
1546 const void *value, size_t size, int flags);
1547 void (*inode_post_setxattr) (struct dentry *dentry, const char *name,
1548 const void *value, size_t size, int flags);
1549 int (*inode_getxattr) (struct dentry *dentry, const char *name);
1550 int (*inode_listxattr) (struct dentry *dentry);
1551 int (*inode_removexattr) (struct dentry *dentry, const char *name);
1552 int (*inode_need_killpriv) (struct dentry *dentry);
1553 int (*inode_killpriv) (struct dentry *dentry);
1554 int (*inode_getsecurity) (const struct inode *inode, const char *name, void **buffer, bool alloc);
1555 int (*inode_setsecurity) (struct inode *inode, const char *name, const void *value, size_t size, int flags);
1556 int (*inode_listsecurity) (struct inode *inode, char *buffer, size_t buffer_size);
1557 void (*inode_getsecid) (const struct inode *inode, u32 *secid);
1559 int (*file_permission) (struct file *file, int mask);
1560 int (*file_alloc_security) (struct file *file);
1561 void (*file_free_security) (struct file *file);
1562 int (*file_ioctl) (struct file *file, unsigned int cmd,
1564 int (*file_mmap) (struct file *file,
1565 unsigned long reqprot, unsigned long prot,
1566 unsigned long flags, unsigned long addr,
1567 unsigned long addr_only);
1568 int (*file_mprotect) (struct vm_area_struct *vma,
1569 unsigned long reqprot,
1570 unsigned long prot);
1571 int (*file_lock) (struct file *file, unsigned int cmd);
1572 int (*file_fcntl) (struct file *file, unsigned int cmd,
1574 int (*file_set_fowner) (struct file *file);
1575 int (*file_send_sigiotask) (struct task_struct *tsk,
1576 struct fown_struct *fown, int sig);
1577 int (*file_receive) (struct file *file);
1578 int (*dentry_open) (struct file *file, const struct cred *cred);
1580 int (*task_create) (unsigned long clone_flags);
1581 int (*cred_alloc_blank) (struct cred *cred, gfp_t gfp);
1582 void (*cred_free) (struct cred *cred);
1583 int (*cred_prepare)(struct cred *new, const struct cred *old,
1585 void (*cred_commit)(struct cred *new, const struct cred *old);
1586 void (*cred_transfer)(struct cred *new, const struct cred *old);
1587 int (*kernel_act_as)(struct cred *new, u32 secid);
1588 int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
1589 int (*kernel_module_request)(char *kmod_name);
1590 int (*task_setuid) (uid_t id0, uid_t id1, uid_t id2, int flags);
1591 int (*task_fix_setuid) (struct cred *new, const struct cred *old,
1593 int (*task_setgid) (gid_t id0, gid_t id1, gid_t id2, int flags);
1594 int (*task_setpgid) (struct task_struct *p, pid_t pgid);
1595 int (*task_getpgid) (struct task_struct *p);
1596 int (*task_getsid) (struct task_struct *p);
1597 void (*task_getsecid) (struct task_struct *p, u32 *secid);
1598 int (*task_setgroups) (struct group_info *group_info);
1599 int (*task_setnice) (struct task_struct *p, int nice);
1600 int (*task_setioprio) (struct task_struct *p, int ioprio);
1601 int (*task_getioprio) (struct task_struct *p);
1602 int (*task_setrlimit) (unsigned int resource, struct rlimit *new_rlim);
1603 int (*task_setscheduler) (struct task_struct *p, int policy,
1604 struct sched_param *lp);
1605 int (*task_getscheduler) (struct task_struct *p);
1606 int (*task_movememory) (struct task_struct *p);
1607 int (*task_kill) (struct task_struct *p,
1608 struct siginfo *info, int sig, u32 secid);
1609 int (*task_wait) (struct task_struct *p);
1610 int (*task_prctl) (int option, unsigned long arg2,
1611 unsigned long arg3, unsigned long arg4,
1612 unsigned long arg5);
1613 void (*task_to_inode) (struct task_struct *p, struct inode *inode);
1615 int (*ipc_permission) (struct kern_ipc_perm *ipcp, short flag);
1616 void (*ipc_getsecid) (struct kern_ipc_perm *ipcp, u32 *secid);
1618 int (*msg_msg_alloc_security) (struct msg_msg *msg);
1619 void (*msg_msg_free_security) (struct msg_msg *msg);
1621 int (*msg_queue_alloc_security) (struct msg_queue *msq);
1622 void (*msg_queue_free_security) (struct msg_queue *msq);
1623 int (*msg_queue_associate) (struct msg_queue *msq, int msqflg);
1624 int (*msg_queue_msgctl) (struct msg_queue *msq, int cmd);
1625 int (*msg_queue_msgsnd) (struct msg_queue *msq,
1626 struct msg_msg *msg, int msqflg);
1627 int (*msg_queue_msgrcv) (struct msg_queue *msq,
1628 struct msg_msg *msg,
1629 struct task_struct *target,
1630 long type, int mode);
1632 int (*shm_alloc_security) (struct shmid_kernel *shp);
1633 void (*shm_free_security) (struct shmid_kernel *shp);
1634 int (*shm_associate) (struct shmid_kernel *shp, int shmflg);
1635 int (*shm_shmctl) (struct shmid_kernel *shp, int cmd);
1636 int (*shm_shmat) (struct shmid_kernel *shp,
1637 char __user *shmaddr, int shmflg);
1639 int (*sem_alloc_security) (struct sem_array *sma);
1640 void (*sem_free_security) (struct sem_array *sma);
1641 int (*sem_associate) (struct sem_array *sma, int semflg);
1642 int (*sem_semctl) (struct sem_array *sma, int cmd);
1643 int (*sem_semop) (struct sem_array *sma,
1644 struct sembuf *sops, unsigned nsops, int alter);
1646 int (*netlink_send) (struct sock *sk, struct sk_buff *skb);
1647 int (*netlink_recv) (struct sk_buff *skb, int cap);
1649 void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1651 int (*getprocattr) (struct task_struct *p, char *name, char **value);
1652 int (*setprocattr) (struct task_struct *p, char *name, void *value, size_t size);
1653 int (*secid_to_secctx) (u32 secid, char **secdata, u32 *seclen);
1654 int (*secctx_to_secid) (const char *secdata, u32 seclen, u32 *secid);
1655 void (*release_secctx) (char *secdata, u32 seclen);
1657 int (*inode_notifysecctx)(struct inode *inode, void *ctx, u32 ctxlen);
1658 int (*inode_setsecctx)(struct dentry *dentry, void *ctx, u32 ctxlen);
1659 int (*inode_getsecctx)(struct inode *inode, void **ctx, u32 *ctxlen);
1661 #ifdef CONFIG_SECURITY_NETWORK
1662 int (*unix_stream_connect) (struct socket *sock,
1663 struct socket *other, struct sock *newsk);
1664 int (*unix_may_send) (struct socket *sock, struct socket *other);
1666 int (*socket_create) (int family, int type, int protocol, int kern);
1667 int (*socket_post_create) (struct socket *sock, int family,
1668 int type, int protocol, int kern);
1669 int (*socket_bind) (struct socket *sock,
1670 struct sockaddr *address, int addrlen);
1671 int (*socket_connect) (struct socket *sock,
1672 struct sockaddr *address, int addrlen);
1673 int (*socket_listen) (struct socket *sock, int backlog);
1674 int (*socket_accept) (struct socket *sock, struct socket *newsock);
1675 int (*socket_sendmsg) (struct socket *sock,
1676 struct msghdr *msg, int size);
1677 int (*socket_recvmsg) (struct socket *sock,
1678 struct msghdr *msg, int size, int flags);
1679 int (*socket_getsockname) (struct socket *sock);
1680 int (*socket_getpeername) (struct socket *sock);
1681 int (*socket_getsockopt) (struct socket *sock, int level, int optname);
1682 int (*socket_setsockopt) (struct socket *sock, int level, int optname);
1683 int (*socket_shutdown) (struct socket *sock, int how);
1684 int (*socket_sock_rcv_skb) (struct sock *sk, struct sk_buff *skb);
1685 int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
1686 int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
1687 int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
1688 void (*sk_free_security) (struct sock *sk);
1689 void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
1690 void (*sk_getsecid) (struct sock *sk, u32 *secid);
1691 void (*sock_graft) (struct sock *sk, struct socket *parent);
1692 int (*inet_conn_request) (struct sock *sk, struct sk_buff *skb,
1693 struct request_sock *req);
1694 void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req);
1695 void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb);
1696 void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
1697 int (*tun_dev_create)(void);
1698 void (*tun_dev_post_create)(struct sock *sk);
1699 int (*tun_dev_attach)(struct sock *sk);
1700 #endif /* CONFIG_SECURITY_NETWORK */
1702 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1703 int (*xfrm_policy_alloc_security) (struct xfrm_sec_ctx **ctxp,
1704 struct xfrm_user_sec_ctx *sec_ctx);
1705 int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
1706 void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
1707 int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
1708 int (*xfrm_state_alloc_security) (struct xfrm_state *x,
1709 struct xfrm_user_sec_ctx *sec_ctx,
1711 void (*xfrm_state_free_security) (struct xfrm_state *x);
1712 int (*xfrm_state_delete_security) (struct xfrm_state *x);
1713 int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1714 int (*xfrm_state_pol_flow_match) (struct xfrm_state *x,
1715 struct xfrm_policy *xp,
1717 int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall);
1718 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1720 /* key management security hooks */
1722 int (*key_alloc) (struct key *key, const struct cred *cred, unsigned long flags);
1723 void (*key_free) (struct key *key);
1724 int (*key_permission) (key_ref_t key_ref,
1725 const struct cred *cred,
1727 int (*key_getsecurity)(struct key *key, char **_buffer);
1728 int (*key_session_to_parent)(const struct cred *cred,
1729 const struct cred *parent_cred,
1731 #endif /* CONFIG_KEYS */
1734 int (*audit_rule_init) (u32 field, u32 op, char *rulestr, void **lsmrule);
1735 int (*audit_rule_known) (struct audit_krule *krule);
1736 int (*audit_rule_match) (u32 secid, u32 field, u32 op, void *lsmrule,
1737 struct audit_context *actx);
1738 void (*audit_rule_free) (void *lsmrule);
1739 #endif /* CONFIG_AUDIT */
1743 extern int security_init(void);
1744 extern int security_module_enable(struct security_operations *ops);
1745 extern int register_security(struct security_operations *ops);
1747 /* Security operations */
1748 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
1749 int security_ptrace_traceme(struct task_struct *parent);
1750 int security_capget(struct task_struct *target,
1751 kernel_cap_t *effective,
1752 kernel_cap_t *inheritable,
1753 kernel_cap_t *permitted);
1754 int security_capset(struct cred *new, const struct cred *old,
1755 const kernel_cap_t *effective,
1756 const kernel_cap_t *inheritable,
1757 const kernel_cap_t *permitted);
1758 int security_capable(int cap);
1759 int security_real_capable(struct task_struct *tsk, int cap);
1760 int security_real_capable_noaudit(struct task_struct *tsk, int cap);
1761 int security_acct(struct file *file);
1762 int security_sysctl(struct ctl_table *table, int op);
1763 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
1764 int security_quota_on(struct dentry *dentry);
1765 int security_syslog(int type);
1766 int security_settime(struct timespec *ts, struct timezone *tz);
1767 int security_vm_enough_memory(long pages);
1768 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
1769 int security_vm_enough_memory_kern(long pages);
1770 int security_bprm_set_creds(struct linux_binprm *bprm);
1771 int security_bprm_check(struct linux_binprm *bprm);
1772 void security_bprm_committing_creds(struct linux_binprm *bprm);
1773 void security_bprm_committed_creds(struct linux_binprm *bprm);
1774 int security_bprm_secureexec(struct linux_binprm *bprm);
1775 int security_sb_alloc(struct super_block *sb);
1776 void security_sb_free(struct super_block *sb);
1777 int security_sb_copy_data(char *orig, char *copy);
1778 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
1779 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
1780 int security_sb_statfs(struct dentry *dentry);
1781 int security_sb_mount(char *dev_name, struct path *path,
1782 char *type, unsigned long flags, void *data);
1783 int security_sb_check_sb(struct vfsmount *mnt, struct path *path);
1784 int security_sb_umount(struct vfsmount *mnt, int flags);
1785 void security_sb_umount_close(struct vfsmount *mnt);
1786 void security_sb_umount_busy(struct vfsmount *mnt);
1787 void security_sb_post_remount(struct vfsmount *mnt, unsigned long flags, void *data);
1788 void security_sb_post_addmount(struct vfsmount *mnt, struct path *mountpoint);
1789 int security_sb_pivotroot(struct path *old_path, struct path *new_path);
1790 void security_sb_post_pivotroot(struct path *old_path, struct path *new_path);
1791 int security_sb_set_mnt_opts(struct super_block *sb, struct security_mnt_opts *opts);
1792 void security_sb_clone_mnt_opts(const struct super_block *oldsb,
1793 struct super_block *newsb);
1794 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
1796 int security_inode_alloc(struct inode *inode);
1797 void security_inode_free(struct inode *inode);
1798 int security_inode_init_security(struct inode *inode, struct inode *dir,
1799 char **name, void **value, size_t *len);
1800 int security_inode_create(struct inode *dir, struct dentry *dentry, int mode);
1801 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1802 struct dentry *new_dentry);
1803 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
1804 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
1805 const char *old_name);
1806 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode);
1807 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
1808 int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev);
1809 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
1810 struct inode *new_dir, struct dentry *new_dentry);
1811 int security_inode_readlink(struct dentry *dentry);
1812 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
1813 int security_inode_permission(struct inode *inode, int mask);
1814 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
1815 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
1816 void security_inode_delete(struct inode *inode);
1817 int security_inode_setxattr(struct dentry *dentry, const char *name,
1818 const void *value, size_t size, int flags);
1819 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1820 const void *value, size_t size, int flags);
1821 int security_inode_getxattr(struct dentry *dentry, const char *name);
1822 int security_inode_listxattr(struct dentry *dentry);
1823 int security_inode_removexattr(struct dentry *dentry, const char *name);
1824 int security_inode_need_killpriv(struct dentry *dentry);
1825 int security_inode_killpriv(struct dentry *dentry);
1826 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
1827 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1828 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
1829 void security_inode_getsecid(const struct inode *inode, u32 *secid);
1830 int security_file_permission(struct file *file, int mask);
1831 int security_file_alloc(struct file *file);
1832 void security_file_free(struct file *file);
1833 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
1834 int security_file_mmap(struct file *file, unsigned long reqprot,
1835 unsigned long prot, unsigned long flags,
1836 unsigned long addr, unsigned long addr_only);
1837 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1838 unsigned long prot);
1839 int security_file_lock(struct file *file, unsigned int cmd);
1840 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
1841 int security_file_set_fowner(struct file *file);
1842 int security_file_send_sigiotask(struct task_struct *tsk,
1843 struct fown_struct *fown, int sig);
1844 int security_file_receive(struct file *file);
1845 int security_dentry_open(struct file *file, const struct cred *cred);
1846 int security_task_create(unsigned long clone_flags);
1847 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
1848 void security_cred_free(struct cred *cred);
1849 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
1850 void security_commit_creds(struct cred *new, const struct cred *old);
1851 void security_transfer_creds(struct cred *new, const struct cred *old);
1852 int security_kernel_act_as(struct cred *new, u32 secid);
1853 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
1854 int security_kernel_module_request(char *kmod_name);
1855 int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags);
1856 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1858 int security_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags);
1859 int security_task_setpgid(struct task_struct *p, pid_t pgid);
1860 int security_task_getpgid(struct task_struct *p);
1861 int security_task_getsid(struct task_struct *p);
1862 void security_task_getsecid(struct task_struct *p, u32 *secid);
1863 int security_task_setgroups(struct group_info *group_info);
1864 int security_task_setnice(struct task_struct *p, int nice);
1865 int security_task_setioprio(struct task_struct *p, int ioprio);
1866 int security_task_getioprio(struct task_struct *p);
1867 int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim);
1868 int security_task_setscheduler(struct task_struct *p,
1869 int policy, struct sched_param *lp);
1870 int security_task_getscheduler(struct task_struct *p);
1871 int security_task_movememory(struct task_struct *p);
1872 int security_task_kill(struct task_struct *p, struct siginfo *info,
1873 int sig, u32 secid);
1874 int security_task_wait(struct task_struct *p);
1875 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1876 unsigned long arg4, unsigned long arg5);
1877 void security_task_to_inode(struct task_struct *p, struct inode *inode);
1878 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
1879 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
1880 int security_msg_msg_alloc(struct msg_msg *msg);
1881 void security_msg_msg_free(struct msg_msg *msg);
1882 int security_msg_queue_alloc(struct msg_queue *msq);
1883 void security_msg_queue_free(struct msg_queue *msq);
1884 int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
1885 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
1886 int security_msg_queue_msgsnd(struct msg_queue *msq,
1887 struct msg_msg *msg, int msqflg);
1888 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1889 struct task_struct *target, long type, int mode);
1890 int security_shm_alloc(struct shmid_kernel *shp);
1891 void security_shm_free(struct shmid_kernel *shp);
1892 int security_shm_associate(struct shmid_kernel *shp, int shmflg);
1893 int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
1894 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
1895 int security_sem_alloc(struct sem_array *sma);
1896 void security_sem_free(struct sem_array *sma);
1897 int security_sem_associate(struct sem_array *sma, int semflg);
1898 int security_sem_semctl(struct sem_array *sma, int cmd);
1899 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1900 unsigned nsops, int alter);
1901 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
1902 int security_getprocattr(struct task_struct *p, char *name, char **value);
1903 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
1904 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
1905 int security_netlink_recv(struct sk_buff *skb, int cap);
1906 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
1907 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
1908 void security_release_secctx(char *secdata, u32 seclen);
1910 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
1911 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
1912 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
1913 #else /* CONFIG_SECURITY */
1914 struct security_mnt_opts {
1917 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
1921 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
1926 * This is the default capabilities functionality. Most of these functions
1927 * are just stubbed out, but a few must call the proper capable code.
1930 static inline int security_init(void)
1935 static inline int security_ptrace_access_check(struct task_struct *child,
1938 return cap_ptrace_access_check(child, mode);
1941 static inline int security_ptrace_traceme(struct task_struct *parent)
1943 return cap_ptrace_traceme(parent);
1946 static inline int security_capget(struct task_struct *target,
1947 kernel_cap_t *effective,
1948 kernel_cap_t *inheritable,
1949 kernel_cap_t *permitted)
1951 return cap_capget(target, effective, inheritable, permitted);
1954 static inline int security_capset(struct cred *new,
1955 const struct cred *old,
1956 const kernel_cap_t *effective,
1957 const kernel_cap_t *inheritable,
1958 const kernel_cap_t *permitted)
1960 return cap_capset(new, old, effective, inheritable, permitted);
1963 static inline int security_capable(int cap)
1965 return cap_capable(current, current_cred(), cap, SECURITY_CAP_AUDIT);
1968 static inline int security_real_capable(struct task_struct *tsk, int cap)
1973 ret = cap_capable(tsk, __task_cred(tsk), cap, SECURITY_CAP_AUDIT);
1979 int security_real_capable_noaudit(struct task_struct *tsk, int cap)
1984 ret = cap_capable(tsk, __task_cred(tsk), cap,
1985 SECURITY_CAP_NOAUDIT);
1990 static inline int security_acct(struct file *file)
1995 static inline int security_sysctl(struct ctl_table *table, int op)
2000 static inline int security_quotactl(int cmds, int type, int id,
2001 struct super_block *sb)
2006 static inline int security_quota_on(struct dentry *dentry)
2011 static inline int security_syslog(int type)
2013 return cap_syslog(type);
2016 static inline int security_settime(struct timespec *ts, struct timezone *tz)
2018 return cap_settime(ts, tz);
2021 static inline int security_vm_enough_memory(long pages)
2023 WARN_ON(current->mm == NULL);
2024 return cap_vm_enough_memory(current->mm, pages);
2027 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
2029 WARN_ON(mm == NULL);
2030 return cap_vm_enough_memory(mm, pages);
2033 static inline int security_vm_enough_memory_kern(long pages)
2035 /* If current->mm is a kernel thread then we will pass NULL,
2036 for this specific case that is fine */
2037 return cap_vm_enough_memory(current->mm, pages);
2040 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
2042 return cap_bprm_set_creds(bprm);
2045 static inline int security_bprm_check(struct linux_binprm *bprm)
2050 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
2054 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
2058 static inline int security_bprm_secureexec(struct linux_binprm *bprm)
2060 return cap_bprm_secureexec(bprm);
2063 static inline int security_sb_alloc(struct super_block *sb)
2068 static inline void security_sb_free(struct super_block *sb)
2071 static inline int security_sb_copy_data(char *orig, char *copy)
2076 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
2081 static inline int security_sb_show_options(struct seq_file *m,
2082 struct super_block *sb)
2087 static inline int security_sb_statfs(struct dentry *dentry)
2092 static inline int security_sb_mount(char *dev_name, struct path *path,
2093 char *type, unsigned long flags,
2099 static inline int security_sb_check_sb(struct vfsmount *mnt,
2105 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
2110 static inline void security_sb_umount_close(struct vfsmount *mnt)
2113 static inline void security_sb_umount_busy(struct vfsmount *mnt)
2116 static inline void security_sb_post_remount(struct vfsmount *mnt,
2117 unsigned long flags, void *data)
2120 static inline void security_sb_post_addmount(struct vfsmount *mnt,
2121 struct path *mountpoint)
2124 static inline int security_sb_pivotroot(struct path *old_path,
2125 struct path *new_path)
2130 static inline void security_sb_post_pivotroot(struct path *old_path,
2131 struct path *new_path)
2134 static inline int security_sb_set_mnt_opts(struct super_block *sb,
2135 struct security_mnt_opts *opts)
2140 static inline void security_sb_clone_mnt_opts(const struct super_block *oldsb,
2141 struct super_block *newsb)
2144 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
2149 static inline int security_inode_alloc(struct inode *inode)
2154 static inline void security_inode_free(struct inode *inode)
2157 static inline int security_inode_init_security(struct inode *inode,
2166 static inline int security_inode_create(struct inode *dir,
2167 struct dentry *dentry,
2173 static inline int security_inode_link(struct dentry *old_dentry,
2175 struct dentry *new_dentry)
2180 static inline int security_inode_unlink(struct inode *dir,
2181 struct dentry *dentry)
2186 static inline int security_inode_symlink(struct inode *dir,
2187 struct dentry *dentry,
2188 const char *old_name)
2193 static inline int security_inode_mkdir(struct inode *dir,
2194 struct dentry *dentry,
2200 static inline int security_inode_rmdir(struct inode *dir,
2201 struct dentry *dentry)
2206 static inline int security_inode_mknod(struct inode *dir,
2207 struct dentry *dentry,
2208 int mode, dev_t dev)
2213 static inline int security_inode_rename(struct inode *old_dir,
2214 struct dentry *old_dentry,
2215 struct inode *new_dir,
2216 struct dentry *new_dentry)
2221 static inline int security_inode_readlink(struct dentry *dentry)
2226 static inline int security_inode_follow_link(struct dentry *dentry,
2227 struct nameidata *nd)
2232 static inline int security_inode_permission(struct inode *inode, int mask)
2237 static inline int security_inode_setattr(struct dentry *dentry,
2243 static inline int security_inode_getattr(struct vfsmount *mnt,
2244 struct dentry *dentry)
2249 static inline void security_inode_delete(struct inode *inode)
2252 static inline int security_inode_setxattr(struct dentry *dentry,
2253 const char *name, const void *value, size_t size, int flags)
2255 return cap_inode_setxattr(dentry, name, value, size, flags);
2258 static inline void security_inode_post_setxattr(struct dentry *dentry,
2259 const char *name, const void *value, size_t size, int flags)
2262 static inline int security_inode_getxattr(struct dentry *dentry,
2268 static inline int security_inode_listxattr(struct dentry *dentry)
2273 static inline int security_inode_removexattr(struct dentry *dentry,
2276 return cap_inode_removexattr(dentry, name);
2279 static inline int security_inode_need_killpriv(struct dentry *dentry)
2281 return cap_inode_need_killpriv(dentry);
2284 static inline int security_inode_killpriv(struct dentry *dentry)
2286 return cap_inode_killpriv(dentry);
2289 static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
2294 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
2299 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
2304 static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
2309 static inline int security_file_permission(struct file *file, int mask)
2314 static inline int security_file_alloc(struct file *file)
2319 static inline void security_file_free(struct file *file)
2322 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
2328 static inline int security_file_mmap(struct file *file, unsigned long reqprot,
2330 unsigned long flags,
2332 unsigned long addr_only)
2334 return cap_file_mmap(file, reqprot, prot, flags, addr, addr_only);
2337 static inline int security_file_mprotect(struct vm_area_struct *vma,
2338 unsigned long reqprot,
2344 static inline int security_file_lock(struct file *file, unsigned int cmd)
2349 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
2355 static inline int security_file_set_fowner(struct file *file)
2360 static inline int security_file_send_sigiotask(struct task_struct *tsk,
2361 struct fown_struct *fown,
2367 static inline int security_file_receive(struct file *file)
2372 static inline int security_dentry_open(struct file *file,
2373 const struct cred *cred)
2378 static inline int security_task_create(unsigned long clone_flags)
2383 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
2388 static inline void security_cred_free(struct cred *cred)
2391 static inline int security_prepare_creds(struct cred *new,
2392 const struct cred *old,
2398 static inline void security_commit_creds(struct cred *new,
2399 const struct cred *old)
2403 static inline void security_transfer_creds(struct cred *new,
2404 const struct cred *old)
2408 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
2413 static inline int security_kernel_create_files_as(struct cred *cred,
2414 struct inode *inode)
2419 static inline int security_kernel_module_request(char *kmod_name)
2424 static inline int security_task_setuid(uid_t id0, uid_t id1, uid_t id2,
2430 static inline int security_task_fix_setuid(struct cred *new,
2431 const struct cred *old,
2434 return cap_task_fix_setuid(new, old, flags);
2437 static inline int security_task_setgid(gid_t id0, gid_t id1, gid_t id2,
2443 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
2448 static inline int security_task_getpgid(struct task_struct *p)
2453 static inline int security_task_getsid(struct task_struct *p)
2458 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
2463 static inline int security_task_setgroups(struct group_info *group_info)
2468 static inline int security_task_setnice(struct task_struct *p, int nice)
2470 return cap_task_setnice(p, nice);
2473 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
2475 return cap_task_setioprio(p, ioprio);
2478 static inline int security_task_getioprio(struct task_struct *p)
2483 static inline int security_task_setrlimit(unsigned int resource,
2484 struct rlimit *new_rlim)
2489 static inline int security_task_setscheduler(struct task_struct *p,
2491 struct sched_param *lp)
2493 return cap_task_setscheduler(p, policy, lp);
2496 static inline int security_task_getscheduler(struct task_struct *p)
2501 static inline int security_task_movememory(struct task_struct *p)
2506 static inline int security_task_kill(struct task_struct *p,
2507 struct siginfo *info, int sig,
2513 static inline int security_task_wait(struct task_struct *p)
2518 static inline int security_task_prctl(int option, unsigned long arg2,
2523 return cap_task_prctl(option, arg2, arg3, arg3, arg5);
2526 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
2529 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
2535 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
2540 static inline int security_msg_msg_alloc(struct msg_msg *msg)
2545 static inline void security_msg_msg_free(struct msg_msg *msg)
2548 static inline int security_msg_queue_alloc(struct msg_queue *msq)
2553 static inline void security_msg_queue_free(struct msg_queue *msq)
2556 static inline int security_msg_queue_associate(struct msg_queue *msq,
2562 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
2567 static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
2568 struct msg_msg *msg, int msqflg)
2573 static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
2574 struct msg_msg *msg,
2575 struct task_struct *target,
2576 long type, int mode)
2581 static inline int security_shm_alloc(struct shmid_kernel *shp)
2586 static inline void security_shm_free(struct shmid_kernel *shp)
2589 static inline int security_shm_associate(struct shmid_kernel *shp,
2595 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
2600 static inline int security_shm_shmat(struct shmid_kernel *shp,
2601 char __user *shmaddr, int shmflg)
2606 static inline int security_sem_alloc(struct sem_array *sma)
2611 static inline void security_sem_free(struct sem_array *sma)
2614 static inline int security_sem_associate(struct sem_array *sma, int semflg)
2619 static inline int security_sem_semctl(struct sem_array *sma, int cmd)
2624 static inline int security_sem_semop(struct sem_array *sma,
2625 struct sembuf *sops, unsigned nsops,
2631 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
2634 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
2639 static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2644 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
2646 return cap_netlink_send(sk, skb);
2649 static inline int security_netlink_recv(struct sk_buff *skb, int cap)
2651 return cap_netlink_recv(skb, cap);
2654 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2659 static inline int security_secctx_to_secid(const char *secdata,
2666 static inline void security_release_secctx(char *secdata, u32 seclen)
2670 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
2674 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
2678 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
2682 #endif /* CONFIG_SECURITY */
2684 #ifdef CONFIG_SECURITY_NETWORK
2686 int security_unix_stream_connect(struct socket *sock, struct socket *other,
2687 struct sock *newsk);
2688 int security_unix_may_send(struct socket *sock, struct socket *other);
2689 int security_socket_create(int family, int type, int protocol, int kern);
2690 int security_socket_post_create(struct socket *sock, int family,
2691 int type, int protocol, int kern);
2692 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
2693 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
2694 int security_socket_listen(struct socket *sock, int backlog);
2695 int security_socket_accept(struct socket *sock, struct socket *newsock);
2696 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
2697 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2698 int size, int flags);
2699 int security_socket_getsockname(struct socket *sock);
2700 int security_socket_getpeername(struct socket *sock);
2701 int security_socket_getsockopt(struct socket *sock, int level, int optname);
2702 int security_socket_setsockopt(struct socket *sock, int level, int optname);
2703 int security_socket_shutdown(struct socket *sock, int how);
2704 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
2705 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2706 int __user *optlen, unsigned len);
2707 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
2708 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
2709 void security_sk_free(struct sock *sk);
2710 void security_sk_clone(const struct sock *sk, struct sock *newsk);
2711 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
2712 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
2713 void security_sock_graft(struct sock*sk, struct socket *parent);
2714 int security_inet_conn_request(struct sock *sk,
2715 struct sk_buff *skb, struct request_sock *req);
2716 void security_inet_csk_clone(struct sock *newsk,
2717 const struct request_sock *req);
2718 void security_inet_conn_established(struct sock *sk,
2719 struct sk_buff *skb);
2720 int security_tun_dev_create(void);
2721 void security_tun_dev_post_create(struct sock *sk);
2722 int security_tun_dev_attach(struct sock *sk);
2724 #else /* CONFIG_SECURITY_NETWORK */
2725 static inline int security_unix_stream_connect(struct socket *sock,
2726 struct socket *other,
2732 static inline int security_unix_may_send(struct socket *sock,
2733 struct socket *other)
2738 static inline int security_socket_create(int family, int type,
2739 int protocol, int kern)
2744 static inline int security_socket_post_create(struct socket *sock,
2747 int protocol, int kern)
2752 static inline int security_socket_bind(struct socket *sock,
2753 struct sockaddr *address,
2759 static inline int security_socket_connect(struct socket *sock,
2760 struct sockaddr *address,
2766 static inline int security_socket_listen(struct socket *sock, int backlog)
2771 static inline int security_socket_accept(struct socket *sock,
2772 struct socket *newsock)
2777 static inline int security_socket_sendmsg(struct socket *sock,
2778 struct msghdr *msg, int size)
2783 static inline int security_socket_recvmsg(struct socket *sock,
2784 struct msghdr *msg, int size,
2790 static inline int security_socket_getsockname(struct socket *sock)
2795 static inline int security_socket_getpeername(struct socket *sock)
2800 static inline int security_socket_getsockopt(struct socket *sock,
2801 int level, int optname)
2806 static inline int security_socket_setsockopt(struct socket *sock,
2807 int level, int optname)
2812 static inline int security_socket_shutdown(struct socket *sock, int how)
2816 static inline int security_sock_rcv_skb(struct sock *sk,
2817 struct sk_buff *skb)
2822 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2823 int __user *optlen, unsigned len)
2825 return -ENOPROTOOPT;
2828 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
2830 return -ENOPROTOOPT;
2833 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2838 static inline void security_sk_free(struct sock *sk)
2842 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
2846 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
2850 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2854 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
2858 static inline int security_inet_conn_request(struct sock *sk,
2859 struct sk_buff *skb, struct request_sock *req)
2864 static inline void security_inet_csk_clone(struct sock *newsk,
2865 const struct request_sock *req)
2869 static inline void security_inet_conn_established(struct sock *sk,
2870 struct sk_buff *skb)
2874 static inline int security_tun_dev_create(void)
2879 static inline void security_tun_dev_post_create(struct sock *sk)
2883 static inline int security_tun_dev_attach(struct sock *sk)
2887 #endif /* CONFIG_SECURITY_NETWORK */
2889 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2891 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx);
2892 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
2893 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
2894 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
2895 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
2896 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2897 struct xfrm_sec_ctx *polsec, u32 secid);
2898 int security_xfrm_state_delete(struct xfrm_state *x);
2899 void security_xfrm_state_free(struct xfrm_state *x);
2900 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
2901 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2902 struct xfrm_policy *xp, struct flowi *fl);
2903 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
2904 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
2906 #else /* CONFIG_SECURITY_NETWORK_XFRM */
2908 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
2913 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
2918 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
2922 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
2927 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
2928 struct xfrm_user_sec_ctx *sec_ctx)
2933 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2934 struct xfrm_sec_ctx *polsec, u32 secid)
2939 static inline void security_xfrm_state_free(struct xfrm_state *x)
2943 static inline int security_xfrm_state_delete(struct xfrm_state *x)
2948 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
2953 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2954 struct xfrm_policy *xp, struct flowi *fl)
2959 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
2964 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2968 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2970 #ifdef CONFIG_SECURITY_PATH
2971 int security_path_unlink(struct path *dir, struct dentry *dentry);
2972 int security_path_mkdir(struct path *dir, struct dentry *dentry, int mode);
2973 int security_path_rmdir(struct path *dir, struct dentry *dentry);
2974 int security_path_mknod(struct path *dir, struct dentry *dentry, int mode,
2976 int security_path_truncate(struct path *path, loff_t length,
2977 unsigned int time_attrs);
2978 int security_path_symlink(struct path *dir, struct dentry *dentry,
2979 const char *old_name);
2980 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
2981 struct dentry *new_dentry);
2982 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
2983 struct path *new_dir, struct dentry *new_dentry);
2984 int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
2986 int security_path_chown(struct path *path, uid_t uid, gid_t gid);
2987 int security_path_chroot(struct path *path);
2988 #else /* CONFIG_SECURITY_PATH */
2989 static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
2994 static inline int security_path_mkdir(struct path *dir, struct dentry *dentry,
3000 static inline int security_path_rmdir(struct path *dir, struct dentry *dentry)
3005 static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
3006 int mode, unsigned int dev)
3011 static inline int security_path_truncate(struct path *path, loff_t length,
3012 unsigned int time_attrs)
3017 static inline int security_path_symlink(struct path *dir, struct dentry *dentry,
3018 const char *old_name)
3023 static inline int security_path_link(struct dentry *old_dentry,
3024 struct path *new_dir,
3025 struct dentry *new_dentry)
3030 static inline int security_path_rename(struct path *old_dir,
3031 struct dentry *old_dentry,
3032 struct path *new_dir,
3033 struct dentry *new_dentry)
3038 static inline int security_path_chmod(struct dentry *dentry,
3039 struct vfsmount *mnt,
3045 static inline int security_path_chown(struct path *path, uid_t uid, gid_t gid)
3050 static inline int security_path_chroot(struct path *path)
3054 #endif /* CONFIG_SECURITY_PATH */
3057 #ifdef CONFIG_SECURITY
3059 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
3060 void security_key_free(struct key *key);
3061 int security_key_permission(key_ref_t key_ref,
3062 const struct cred *cred, key_perm_t perm);
3063 int security_key_getsecurity(struct key *key, char **_buffer);
3064 int security_key_session_to_parent(const struct cred *cred,
3065 const struct cred *parent_cred,
3070 static inline int security_key_alloc(struct key *key,
3071 const struct cred *cred,
3072 unsigned long flags)
3077 static inline void security_key_free(struct key *key)
3081 static inline int security_key_permission(key_ref_t key_ref,
3082 const struct cred *cred,
3088 static inline int security_key_getsecurity(struct key *key, char **_buffer)
3094 static inline int security_key_session_to_parent(const struct cred *cred,
3095 const struct cred *parent_cred,
3102 #endif /* CONFIG_KEYS */
3105 #ifdef CONFIG_SECURITY
3106 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
3107 int security_audit_rule_known(struct audit_krule *krule);
3108 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
3109 struct audit_context *actx);
3110 void security_audit_rule_free(void *lsmrule);
3114 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
3120 static inline int security_audit_rule_known(struct audit_krule *krule)
3125 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
3126 void *lsmrule, struct audit_context *actx)
3131 static inline void security_audit_rule_free(void *lsmrule)
3134 #endif /* CONFIG_SECURITY */
3135 #endif /* CONFIG_AUDIT */
3137 #ifdef CONFIG_SECURITYFS
3139 extern struct dentry *securityfs_create_file(const char *name, mode_t mode,
3140 struct dentry *parent, void *data,
3141 const struct file_operations *fops);
3142 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
3143 extern void securityfs_remove(struct dentry *dentry);
3145 #else /* CONFIG_SECURITYFS */
3147 static inline struct dentry *securityfs_create_dir(const char *name,
3148 struct dentry *parent)
3150 return ERR_PTR(-ENODEV);
3153 static inline struct dentry *securityfs_create_file(const char *name,
3155 struct dentry *parent,
3157 const struct file_operations *fops)
3159 return ERR_PTR(-ENODEV);
3162 static inline void securityfs_remove(struct dentry *dentry)
3167 #ifdef CONFIG_SECURITY
3169 static inline char *alloc_secdata(void)
3171 return (char *)get_zeroed_page(GFP_KERNEL);
3174 static inline void free_secdata(void *secdata)
3176 free_page((unsigned long)secdata);
3181 static inline char *alloc_secdata(void)
3186 static inline void free_secdata(void *secdata)
3188 #endif /* CONFIG_SECURITY */
3190 #endif /* ! __LINUX_SECURITY_H */