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/msg.h>
32 #include <linux/sched.h>
33 #include <linux/key.h>
34 #include <linux/xfrm.h>
37 /* Maximum number of letters for an LSM name string */
38 #define SECURITY_NAME_MAX 10
40 /* If capable should audit the security request */
41 #define SECURITY_CAP_NOAUDIT 0
42 #define SECURITY_CAP_AUDIT 1
48 * These functions are in security/capability.c and are used
49 * as the default capabilities functions
51 extern int cap_capable(struct task_struct *tsk, const struct cred *cred,
53 extern int cap_settime(struct timespec *ts, struct timezone *tz);
54 extern int cap_ptrace_may_access(struct task_struct *child, unsigned int mode);
55 extern int cap_ptrace_traceme(struct task_struct *parent);
56 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
57 extern int cap_capset(struct cred *new, const struct cred *old,
58 const kernel_cap_t *effective,
59 const kernel_cap_t *inheritable,
60 const kernel_cap_t *permitted);
61 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
62 extern int cap_bprm_secureexec(struct linux_binprm *bprm);
63 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
64 const void *value, size_t size, int flags);
65 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
66 extern int cap_inode_need_killpriv(struct dentry *dentry);
67 extern int cap_inode_killpriv(struct dentry *dentry);
68 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
69 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
70 unsigned long arg4, unsigned long arg5);
71 extern int cap_task_setscheduler(struct task_struct *p, int policy, struct sched_param *lp);
72 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
73 extern int cap_task_setnice(struct task_struct *p, int nice);
74 extern int cap_syslog(int type);
75 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
87 struct xfrm_user_sec_ctx;
90 extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
91 extern int cap_netlink_recv(struct sk_buff *skb, int cap);
93 extern unsigned long mmap_min_addr;
95 * Values used in the task_security_ops calls
97 /* setuid or setgid, id0 == uid or gid */
98 #define LSM_SETID_ID 1
100 /* setreuid or setregid, id0 == real, id1 == eff */
101 #define LSM_SETID_RE 2
103 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
104 #define LSM_SETID_RES 4
106 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
107 #define LSM_SETID_FS 8
109 /* forward declares to avoid warnings */
113 /* bprm->unsafe reasons */
114 #define LSM_UNSAFE_SHARE 1
115 #define LSM_UNSAFE_PTRACE 2
116 #define LSM_UNSAFE_PTRACE_CAP 4
118 #ifdef CONFIG_SECURITY
120 struct security_mnt_opts {
126 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
128 opts->mnt_opts = NULL;
129 opts->mnt_opts_flags = NULL;
130 opts->num_mnt_opts = 0;
133 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
137 for (i = 0; i < opts->num_mnt_opts; i++)
138 kfree(opts->mnt_opts[i]);
139 kfree(opts->mnt_opts);
140 opts->mnt_opts = NULL;
141 kfree(opts->mnt_opts_flags);
142 opts->mnt_opts_flags = NULL;
143 opts->num_mnt_opts = 0;
147 * struct security_operations - main security structure
149 * Security module identifier.
152 * A string that acts as a unique identifeir for the LSM with max number
153 * of characters = SECURITY_NAME_MAX.
155 * Security hooks for program execution operations.
158 * Save security information in the bprm->security field, typically based
159 * on information about the bprm->file, for later use by the apply_creds
160 * hook. This hook may also optionally check permissions (e.g. for
161 * transitions between security domains).
162 * This hook may be called multiple times during a single execve, e.g. for
163 * interpreters. The hook can tell whether it has already been called by
164 * checking to see if @bprm->security is non-NULL. If so, then the hook
165 * may decide either to retain the security information saved earlier or
167 * @bprm contains the linux_binprm structure.
168 * Return 0 if the hook is successful and permission is granted.
169 * @bprm_check_security:
170 * This hook mediates the point when a search for a binary handler will
171 * begin. It allows a check the @bprm->security value which is set in the
172 * preceding set_creds call. The primary difference from set_creds is
173 * that the argv list and envp list are reliably available in @bprm. This
174 * hook may be called multiple times during a single execve; and in each
175 * pass set_creds is called first.
176 * @bprm contains the linux_binprm structure.
177 * Return 0 if the hook is successful and permission is granted.
178 * @bprm_committing_creds:
179 * Prepare to install the new security attributes of a process being
180 * transformed by an execve operation, based on the old credentials
181 * pointed to by @current->cred and the information set in @bprm->cred by
182 * the bprm_set_creds hook. @bprm points to the linux_binprm structure.
183 * This hook is a good place to perform state changes on the process such
184 * as closing open file descriptors to which access will no longer be
185 * granted when the attributes are changed. This is called immediately
186 * before commit_creds().
187 * @bprm_committed_creds:
188 * Tidy up after the installation of the new security attributes of a
189 * process being transformed by an execve operation. The new credentials
190 * have, by this point, been set to @current->cred. @bprm points to the
191 * linux_binprm structure. This hook is a good place to perform state
192 * changes on the process such as clearing out non-inheritable signal
193 * state. This is called immediately after commit_creds().
195 * Return a boolean value (0 or 1) indicating whether a "secure exec"
196 * is required. The flag is passed in the auxiliary table
197 * on the initial stack to the ELF interpreter to indicate whether libc
198 * should enable secure mode.
199 * @bprm contains the linux_binprm structure.
201 * Security hooks for filesystem operations.
203 * @sb_alloc_security:
204 * Allocate and attach a security structure to the sb->s_security field.
205 * The s_security field is initialized to NULL when the structure is
207 * @sb contains the super_block structure to be modified.
208 * Return 0 if operation was successful.
210 * Deallocate and clear the sb->s_security field.
211 * @sb contains the super_block structure to be modified.
213 * Check permission before obtaining filesystem statistics for the @mnt
215 * @dentry is a handle on the superblock for the filesystem.
216 * Return 0 if permission is granted.
218 * Check permission before an object specified by @dev_name is mounted on
219 * the mount point named by @nd. For an ordinary mount, @dev_name
220 * identifies a device if the file system type requires a device. For a
221 * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a
222 * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
223 * pathname of the object being mounted.
224 * @dev_name contains the name for object being mounted.
225 * @path contains the path for mount point object.
226 * @type contains the filesystem type.
227 * @flags contains the mount flags.
228 * @data contains the filesystem-specific data.
229 * Return 0 if permission is granted.
231 * Allow mount option data to be copied prior to parsing by the filesystem,
232 * so that the security module can extract security-specific mount
233 * options cleanly (a filesystem may modify the data e.g. with strsep()).
234 * This also allows the original mount data to be stripped of security-
235 * specific options to avoid having to make filesystems aware of them.
236 * @type the type of filesystem being mounted.
237 * @orig the original mount data copied from userspace.
238 * @copy copied data which will be passed to the security module.
239 * Returns 0 if the copy was successful.
241 * Check permission before the device with superblock @mnt->sb is mounted
242 * on the mount point named by @nd.
243 * @mnt contains the vfsmount for device being mounted.
244 * @path contains the path for the mount point.
245 * Return 0 if permission is granted.
247 * Check permission before the @mnt file system is unmounted.
248 * @mnt contains the mounted file system.
249 * @flags contains the unmount flags, e.g. MNT_FORCE.
250 * Return 0 if permission is granted.
252 * Close any files in the @mnt mounted filesystem that are held open by
253 * the security module. This hook is called during an umount operation
254 * prior to checking whether the filesystem is still busy.
255 * @mnt contains the mounted filesystem.
257 * Handle a failed umount of the @mnt mounted filesystem, e.g. re-opening
258 * any files that were closed by umount_close. This hook is called during
259 * an umount operation if the umount fails after a call to the
261 * @mnt contains the mounted filesystem.
263 * Update the security module's state when a filesystem is remounted.
264 * This hook is only called if the remount was successful.
265 * @mnt contains the mounted file system.
266 * @flags contains the new filesystem flags.
267 * @data contains the filesystem-specific data.
269 * Update the security module's state when a filesystem is mounted.
270 * This hook is called any time a mount is successfully grafetd to
272 * @mnt contains the mounted filesystem.
273 * @mountpoint contains the path for the mount point.
275 * Check permission before pivoting the root filesystem.
276 * @old_path contains the path for the new location of the current root (put_old).
277 * @new_path contains the path for the new root (new_root).
278 * Return 0 if permission is granted.
279 * @sb_post_pivotroot:
280 * Update module state after a successful pivot.
281 * @old_path contains the path for the old root.
282 * @new_path contains the path for the new root.
284 * Set the security relevant mount options used for a superblock
285 * @sb the superblock to set security mount options for
286 * @opts binary data structure containing all lsm mount data
287 * @sb_clone_mnt_opts:
288 * Copy all security options from a given superblock to another
289 * @oldsb old superblock which contain information to clone
290 * @newsb new superblock which needs filled in
291 * @sb_parse_opts_str:
292 * Parse a string of security data filling in the opts structure
293 * @options string containing all mount options known by the LSM
294 * @opts binary data structure usable by the LSM
296 * Security hooks for inode operations.
298 * @inode_alloc_security:
299 * Allocate and attach a security structure to @inode->i_security. The
300 * i_security field is initialized to NULL when the inode structure is
302 * @inode contains the inode structure.
303 * Return 0 if operation was successful.
304 * @inode_free_security:
305 * @inode contains the inode structure.
306 * Deallocate the inode security structure and set @inode->i_security to
308 * @inode_init_security:
309 * Obtain the security attribute name suffix and value to set on a newly
310 * created inode and set up the incore security field for the new inode.
311 * This hook is called by the fs code as part of the inode creation
312 * transaction and provides for atomic labeling of the inode, unlike
313 * the post_create/mkdir/... hooks called by the VFS. The hook function
314 * is expected to allocate the name and value via kmalloc, with the caller
315 * being responsible for calling kfree after using them.
316 * If the security module does not use security attributes or does
317 * not wish to put a security attribute on this particular inode,
318 * then it should return -EOPNOTSUPP to skip this processing.
319 * @inode contains the inode structure of the newly created inode.
320 * @dir contains the inode structure of the parent directory.
321 * @name will be set to the allocated name suffix (e.g. selinux).
322 * @value will be set to the allocated attribute value.
323 * @len will be set to the length of the value.
324 * Returns 0 if @name and @value have been successfully set,
325 * -EOPNOTSUPP if no security attribute is needed, or
326 * -ENOMEM on memory allocation failure.
328 * Check permission to create a regular file.
329 * @dir contains inode structure of the parent of the new file.
330 * @dentry contains the dentry structure for the file to be created.
331 * @mode contains the file mode of the file to be created.
332 * Return 0 if permission is granted.
334 * Check permission before creating a new hard link to a file.
335 * @old_dentry contains the dentry structure for an existing link to the file.
336 * @dir contains the inode structure of the parent directory of the new link.
337 * @new_dentry contains the dentry structure for the new link.
338 * Return 0 if permission is granted.
340 * Check permission before creating a new hard link to a file.
341 * @old_dentry contains the dentry structure for an existing link
343 * @new_dir contains the path structure of the parent directory of
345 * @new_dentry contains the dentry structure for the new link.
346 * Return 0 if permission is granted.
348 * Check the permission to remove a hard link to a file.
349 * @dir contains the inode structure of parent directory of the file.
350 * @dentry contains the dentry structure for file to be unlinked.
351 * Return 0 if permission is granted.
353 * Check the permission to remove a hard link to a file.
354 * @dir contains the path structure of parent directory of the file.
355 * @dentry contains the dentry structure for file to be unlinked.
356 * Return 0 if permission is granted.
358 * Check the permission to create a symbolic link to a file.
359 * @dir contains the inode structure of parent directory of the symbolic link.
360 * @dentry contains the dentry structure of the symbolic link.
361 * @old_name contains the pathname of file.
362 * Return 0 if permission is granted.
364 * Check the permission to create a symbolic link to a file.
365 * @dir contains the path structure of parent directory of
367 * @dentry contains the dentry structure of the symbolic link.
368 * @old_name contains the pathname of file.
369 * Return 0 if permission is granted.
371 * Check permissions to create a new directory in the existing directory
372 * associated with inode strcture @dir.
373 * @dir containst the inode structure of parent of the directory to be created.
374 * @dentry contains the dentry structure of new directory.
375 * @mode contains the mode of new directory.
376 * Return 0 if permission is granted.
378 * Check permissions to create a new directory in the existing directory
379 * associated with path strcture @path.
380 * @dir containst the path structure of parent of the directory
382 * @dentry contains the dentry structure of new directory.
383 * @mode contains the mode of new directory.
384 * Return 0 if permission is granted.
386 * Check the permission to remove a directory.
387 * @dir contains the inode structure of parent of the directory to be removed.
388 * @dentry contains the dentry structure of directory to be removed.
389 * Return 0 if permission is granted.
391 * Check the permission to remove a directory.
392 * @dir contains the path structure of parent of the directory to be
394 * @dentry contains the dentry structure of directory to be removed.
395 * Return 0 if permission is granted.
397 * Check permissions when creating a special file (or a socket or a fifo
398 * file created via the mknod system call). Note that if mknod operation
399 * is being done for a regular file, then the create hook will be called
401 * @dir contains the inode structure of parent of the new file.
402 * @dentry contains the dentry structure of the new file.
403 * @mode contains the mode of the new file.
404 * @dev contains the device number.
405 * Return 0 if permission is granted.
407 * Check permissions when creating a file. Note that this hook is called
408 * even if mknod operation is being done for a regular file.
409 * @dir contains the path structure of parent of the new file.
410 * @dentry contains the dentry structure of the new file.
411 * @mode contains the mode of the new file.
412 * @dev contains the undecoded device number. Use new_decode_dev() to get
413 * the decoded device number.
414 * Return 0 if permission is granted.
416 * Check for permission to rename a file or directory.
417 * @old_dir contains the inode structure for parent of the old link.
418 * @old_dentry contains the dentry structure of the old link.
419 * @new_dir contains the inode structure for parent of the new link.
420 * @new_dentry contains the dentry structure of the new link.
421 * Return 0 if permission is granted.
423 * Check for permission to rename a file or directory.
424 * @old_dir contains the path structure for parent of the old link.
425 * @old_dentry contains the dentry structure of the old link.
426 * @new_dir contains the path structure for parent of the new link.
427 * @new_dentry contains the dentry structure of the new link.
428 * Return 0 if permission is granted.
430 * Check the permission to read the symbolic link.
431 * @dentry contains the dentry structure for the file link.
432 * Return 0 if permission is granted.
433 * @inode_follow_link:
434 * Check permission to follow a symbolic link when looking up a pathname.
435 * @dentry contains the dentry structure for the link.
436 * @nd contains the nameidata structure for the parent directory.
437 * Return 0 if permission is granted.
439 * Check permission before accessing an inode. This hook is called by the
440 * existing Linux permission function, so a security module can use it to
441 * provide additional checking for existing Linux permission checks.
442 * Notice that this hook is called when a file is opened (as well as many
443 * other operations), whereas the file_security_ops permission hook is
444 * called when the actual read/write operations are performed.
445 * @inode contains the inode structure to check.
446 * @mask contains the permission mask.
447 * @nd contains the nameidata (may be NULL).
448 * Return 0 if permission is granted.
450 * Check permission before setting file attributes. Note that the kernel
451 * call to notify_change is performed from several locations, whenever
452 * file attributes change (such as when a file is truncated, chown/chmod
453 * operations, transferring disk quotas, etc).
454 * @dentry contains the dentry structure for the file.
455 * @attr is the iattr structure containing the new file attributes.
456 * Return 0 if permission is granted.
458 * Check permission before truncating a file.
459 * @path contains the path structure for the file.
460 * @length is the new length of the file.
461 * @time_attrs is the flags passed to do_truncate().
462 * Return 0 if permission is granted.
464 * Check permission before obtaining file attributes.
465 * @mnt is the vfsmount where the dentry was looked up
466 * @dentry contains the dentry structure for the file.
467 * Return 0 if permission is granted.
469 * @inode contains the inode structure for deleted inode.
470 * This hook is called when a deleted inode is released (i.e. an inode
471 * with no hard links has its use count drop to zero). A security module
472 * can use this hook to release any persistent label associated with the
475 * Check permission before setting the extended attributes
476 * @value identified by @name for @dentry.
477 * Return 0 if permission is granted.
478 * @inode_post_setxattr:
479 * Update inode security field after successful setxattr operation.
480 * @value identified by @name for @dentry.
482 * Check permission before obtaining the extended attributes
483 * identified by @name for @dentry.
484 * Return 0 if permission is granted.
486 * Check permission before obtaining the list of extended attribute
488 * Return 0 if permission is granted.
489 * @inode_removexattr:
490 * Check permission before removing the extended attribute
491 * identified by @name for @dentry.
492 * Return 0 if permission is granted.
493 * @inode_getsecurity:
494 * Retrieve a copy of the extended attribute representation of the
495 * security label associated with @name for @inode via @buffer. Note that
496 * @name is the remainder of the attribute name after the security prefix
497 * has been removed. @alloc is used to specify of the call should return a
498 * value via the buffer or just the value length Return size of buffer on
500 * @inode_setsecurity:
501 * Set the security label associated with @name for @inode from the
502 * extended attribute value @value. @size indicates the size of the
503 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
504 * Note that @name is the remainder of the attribute name after the
505 * security. prefix has been removed.
506 * Return 0 on success.
507 * @inode_listsecurity:
508 * Copy the extended attribute names for the security labels
509 * associated with @inode into @buffer. The maximum size of @buffer
510 * is specified by @buffer_size. @buffer may be NULL to request
511 * the size of the buffer required.
512 * Returns number of bytes used/required on success.
513 * @inode_need_killpriv:
514 * Called when an inode has been changed.
515 * @dentry is the dentry being changed.
516 * Return <0 on error to abort the inode change operation.
517 * Return 0 if inode_killpriv does not need to be called.
518 * Return >0 if inode_killpriv does need to be called.
520 * The setuid bit is being removed. Remove similar security labels.
521 * Called with the dentry->d_inode->i_mutex held.
522 * @dentry is the dentry being changed.
523 * Return 0 on success. If error is returned, then the operation
524 * causing setuid bit removal is failed.
526 * Get the secid associated with the node.
527 * @inode contains a pointer to the inode.
528 * @secid contains a pointer to the location where result will be saved.
529 * In case of failure, @secid will be set to zero.
531 * Security hooks for file operations
534 * Check file permissions before accessing an open file. This hook is
535 * called by various operations that read or write files. A security
536 * module can use this hook to perform additional checking on these
537 * operations, e.g. to revalidate permissions on use to support privilege
538 * bracketing or policy changes. Notice that this hook is used when the
539 * actual read/write operations are performed, whereas the
540 * inode_security_ops hook is called when a file is opened (as well as
541 * many other operations).
542 * Caveat: Although this hook can be used to revalidate permissions for
543 * various system call operations that read or write files, it does not
544 * address the revalidation of permissions for memory-mapped files.
545 * Security modules must handle this separately if they need such
547 * @file contains the file structure being accessed.
548 * @mask contains the requested permissions.
549 * Return 0 if permission is granted.
550 * @file_alloc_security:
551 * Allocate and attach a security structure to the file->f_security field.
552 * The security field is initialized to NULL when the structure is first
554 * @file contains the file structure to secure.
555 * Return 0 if the hook is successful and permission is granted.
556 * @file_free_security:
557 * Deallocate and free any security structures stored in file->f_security.
558 * @file contains the file structure being modified.
560 * @file contains the file structure.
561 * @cmd contains the operation to perform.
562 * @arg contains the operational arguments.
563 * Check permission for an ioctl operation on @file. Note that @arg can
564 * sometimes represents a user space pointer; in other cases, it may be a
565 * simple integer value. When @arg represents a user space pointer, it
566 * should never be used by the security module.
567 * Return 0 if permission is granted.
569 * Check permissions for a mmap operation. The @file may be NULL, e.g.
570 * if mapping anonymous memory.
571 * @file contains the file structure for file to map (may be NULL).
572 * @reqprot contains the protection requested by the application.
573 * @prot contains the protection that will be applied by the kernel.
574 * @flags contains the operational flags.
575 * Return 0 if permission is granted.
577 * Check permissions before changing memory access permissions.
578 * @vma contains the memory region to modify.
579 * @reqprot contains the protection requested by the application.
580 * @prot contains the protection that will be applied by the kernel.
581 * Return 0 if permission is granted.
583 * Check permission before performing file locking operations.
584 * Note: this hook mediates both flock and fcntl style locks.
585 * @file contains the file structure.
586 * @cmd contains the posix-translated lock operation to perform
587 * (e.g. F_RDLCK, F_WRLCK).
588 * Return 0 if permission is granted.
590 * Check permission before allowing the file operation specified by @cmd
591 * from being performed on the file @file. Note that @arg can sometimes
592 * represents a user space pointer; in other cases, it may be a simple
593 * integer value. When @arg represents a user space pointer, it should
594 * never be used by the security module.
595 * @file contains the file structure.
596 * @cmd contains the operation to be performed.
597 * @arg contains the operational arguments.
598 * Return 0 if permission is granted.
600 * Save owner security information (typically from current->security) in
601 * file->f_security for later use by the send_sigiotask hook.
602 * @file contains the file structure to update.
603 * Return 0 on success.
604 * @file_send_sigiotask:
605 * Check permission for the file owner @fown to send SIGIO or SIGURG to the
606 * process @tsk. Note that this hook is sometimes called from interrupt.
607 * Note that the fown_struct, @fown, is never outside the context of a
608 * struct file, so the file structure (and associated security information)
609 * can always be obtained:
610 * container_of(fown, struct file, f_owner)
611 * @tsk contains the structure of task receiving signal.
612 * @fown contains the file owner information.
613 * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
614 * Return 0 if permission is granted.
616 * This hook allows security modules to control the ability of a process
617 * to receive an open file descriptor via socket IPC.
618 * @file contains the file structure being received.
619 * Return 0 if permission is granted.
621 * Security hook for dentry
624 * Save open-time permission checking state for later use upon
625 * file_permission, and recheck access if anything has changed
626 * since inode_permission.
628 * Security hooks for task operations.
631 * Check permission before creating a child process. See the clone(2)
632 * manual page for definitions of the @clone_flags.
633 * @clone_flags contains the flags indicating what should be shared.
634 * Return 0 if permission is granted.
636 * @cred points to the credentials.
637 * Deallocate and clear the cred->security field in a set of credentials.
639 * @new points to the new credentials.
640 * @old points to the original credentials.
641 * @gfp indicates the atomicity of any memory allocations.
642 * Prepare a new set of credentials by copying the data from the old set.
644 * @new points to the new credentials.
645 * @old points to the original credentials.
646 * Install a new set of credentials.
648 * Set the credentials for a kernel service to act as (subjective context).
649 * @new points to the credentials to be modified.
650 * @secid specifies the security ID to be set
651 * The current task must be the one that nominated @secid.
652 * Return 0 if successful.
653 * @kernel_create_files_as:
654 * Set the file creation context in a set of credentials to be the same as
655 * the objective context of the specified inode.
656 * @new points to the credentials to be modified.
657 * @inode points to the inode to use as a reference.
658 * The current task must be the one that nominated @inode.
659 * Return 0 if successful.
661 * Check permission before setting one or more of the user identity
662 * attributes of the current process. The @flags parameter indicates
663 * which of the set*uid system calls invoked this hook and how to
664 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
665 * definitions at the beginning of this file for the @flags values and
667 * @id0 contains a uid.
668 * @id1 contains a uid.
669 * @id2 contains a uid.
670 * @flags contains one of the LSM_SETID_* values.
671 * Return 0 if permission is granted.
673 * Update the module's state after setting one or more of the user
674 * identity attributes of the current process. The @flags parameter
675 * indicates which of the set*uid system calls invoked this hook. If
676 * @new is the set of credentials that will be installed. Modifications
677 * should be made to this rather than to @current->cred.
678 * @old is the set of credentials that are being replaces
679 * @flags contains one of the LSM_SETID_* values.
680 * Return 0 on success.
682 * Check permission before setting one or more of the group identity
683 * attributes of the current process. The @flags parameter indicates
684 * which of the set*gid system calls invoked this hook and how to
685 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
686 * definitions at the beginning of this file for the @flags values and
688 * @id0 contains a gid.
689 * @id1 contains a gid.
690 * @id2 contains a gid.
691 * @flags contains one of the LSM_SETID_* values.
692 * Return 0 if permission is granted.
694 * Check permission before setting the process group identifier of the
695 * process @p to @pgid.
696 * @p contains the task_struct for process being modified.
697 * @pgid contains the new pgid.
698 * Return 0 if permission is granted.
700 * Check permission before getting the process group identifier of the
702 * @p contains the task_struct for the process.
703 * Return 0 if permission is granted.
705 * Check permission before getting the session identifier of the process
707 * @p contains the task_struct for the process.
708 * Return 0 if permission is granted.
710 * Retrieve the security identifier of the process @p.
711 * @p contains the task_struct for the process and place is into @secid.
712 * In case of failure, @secid will be set to zero.
715 * Check permission before setting the supplementary group set of the
717 * @group_info contains the new group information.
718 * Return 0 if permission is granted.
720 * Check permission before setting the nice value of @p to @nice.
721 * @p contains the task_struct of process.
722 * @nice contains the new nice value.
723 * Return 0 if permission is granted.
725 * Check permission before setting the ioprio value of @p to @ioprio.
726 * @p contains the task_struct of process.
727 * @ioprio contains the new ioprio value
728 * Return 0 if permission is granted.
730 * Check permission before getting the ioprio value of @p.
731 * @p contains the task_struct of process.
732 * Return 0 if permission is granted.
734 * Check permission before setting the resource limits of the current
735 * process for @resource to @new_rlim. The old resource limit values can
736 * be examined by dereferencing (current->signal->rlim + resource).
737 * @resource contains the resource whose limit is being set.
738 * @new_rlim contains the new limits for @resource.
739 * Return 0 if permission is granted.
740 * @task_setscheduler:
741 * Check permission before setting scheduling policy and/or parameters of
742 * process @p based on @policy and @lp.
743 * @p contains the task_struct for process.
744 * @policy contains the scheduling policy.
745 * @lp contains the scheduling parameters.
746 * Return 0 if permission is granted.
747 * @task_getscheduler:
748 * Check permission before obtaining scheduling information for process
750 * @p contains the task_struct for process.
751 * Return 0 if permission is granted.
753 * Check permission before moving memory owned by process @p.
754 * @p contains the task_struct for process.
755 * Return 0 if permission is granted.
757 * Check permission before sending signal @sig to @p. @info can be NULL,
758 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
759 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
760 * from the kernel and should typically be permitted.
761 * SIGIO signals are handled separately by the send_sigiotask hook in
763 * @p contains the task_struct for process.
764 * @info contains the signal information.
765 * @sig contains the signal value.
766 * @secid contains the sid of the process where the signal originated
767 * Return 0 if permission is granted.
769 * Check permission before allowing a process to reap a child process @p
770 * and collect its status information.
771 * @p contains the task_struct for process.
772 * Return 0 if permission is granted.
774 * Check permission before performing a process control operation on the
776 * @option contains the operation.
777 * @arg2 contains a argument.
778 * @arg3 contains a argument.
779 * @arg4 contains a argument.
780 * @arg5 contains a argument.
781 * Return -ENOSYS if no-one wanted to handle this op, any other value to
782 * cause prctl() to return immediately with that value.
784 * Set the security attributes for an inode based on an associated task's
785 * security attributes, e.g. for /proc/pid inodes.
786 * @p contains the task_struct for the task.
787 * @inode contains the inode structure for the inode.
789 * Security hooks for Netlink messaging.
792 * Save security information for a netlink message so that permission
793 * checking can be performed when the message is processed. The security
794 * information can be saved using the eff_cap field of the
795 * netlink_skb_parms structure. Also may be used to provide fine
796 * grained control over message transmission.
797 * @sk associated sock of task sending the message.,
798 * @skb contains the sk_buff structure for the netlink message.
799 * Return 0 if the information was successfully saved and message
800 * is allowed to be transmitted.
802 * Check permission before processing the received netlink message in
804 * @skb contains the sk_buff structure for the netlink message.
805 * @cap indicates the capability required
806 * Return 0 if permission is granted.
808 * Security hooks for Unix domain networking.
810 * @unix_stream_connect:
811 * Check permissions before establishing a Unix domain stream connection
812 * between @sock and @other.
813 * @sock contains the socket structure.
814 * @other contains the peer socket structure.
815 * Return 0 if permission is granted.
817 * Check permissions before connecting or sending datagrams from @sock to
819 * @sock contains the socket structure.
820 * @sock contains the peer socket structure.
821 * Return 0 if permission is granted.
823 * The @unix_stream_connect and @unix_may_send hooks were necessary because
824 * Linux provides an alternative to the conventional file name space for Unix
825 * domain sockets. Whereas binding and connecting to sockets in the file name
826 * space is mediated by the typical file permissions (and caught by the mknod
827 * and permission hooks in inode_security_ops), binding and connecting to
828 * sockets in the abstract name space is completely unmediated. Sufficient
829 * control of Unix domain sockets in the abstract name space isn't possible
830 * using only the socket layer hooks, since we need to know the actual target
831 * socket, which is not looked up until we are inside the af_unix code.
833 * Security hooks for socket operations.
836 * Check permissions prior to creating a new socket.
837 * @family contains the requested protocol family.
838 * @type contains the requested communications type.
839 * @protocol contains the requested protocol.
840 * @kern set to 1 if a kernel socket.
841 * Return 0 if permission is granted.
842 * @socket_post_create:
843 * This hook allows a module to update or allocate a per-socket security
844 * structure. Note that the security field was not added directly to the
845 * socket structure, but rather, the socket security information is stored
846 * in the associated inode. Typically, the inode alloc_security hook will
847 * allocate and and attach security information to
848 * sock->inode->i_security. This hook may be used to update the
849 * sock->inode->i_security field with additional information that wasn't
850 * available when the inode was allocated.
851 * @sock contains the newly created socket structure.
852 * @family contains the requested protocol family.
853 * @type contains the requested communications type.
854 * @protocol contains the requested protocol.
855 * @kern set to 1 if a kernel socket.
857 * Check permission before socket protocol layer bind operation is
858 * performed and the socket @sock is bound to the address specified in the
859 * @address parameter.
860 * @sock contains the socket structure.
861 * @address contains the address to bind to.
862 * @addrlen contains the length of address.
863 * Return 0 if permission is granted.
865 * Check permission before socket protocol layer connect operation
866 * attempts to connect socket @sock to a remote address, @address.
867 * @sock contains the socket structure.
868 * @address contains the address of remote endpoint.
869 * @addrlen contains the length of address.
870 * Return 0 if permission is granted.
872 * Check permission before socket protocol layer listen operation.
873 * @sock contains the socket structure.
874 * @backlog contains the maximum length for the pending connection queue.
875 * Return 0 if permission is granted.
877 * Check permission before accepting a new connection. Note that the new
878 * socket, @newsock, has been created and some information copied to it,
879 * but the accept operation has not actually been performed.
880 * @sock contains the listening socket structure.
881 * @newsock contains the newly created server socket for connection.
882 * Return 0 if permission is granted.
884 * Check permission before transmitting a message to another socket.
885 * @sock contains the socket structure.
886 * @msg contains the message to be transmitted.
887 * @size contains the size of message.
888 * Return 0 if permission is granted.
890 * Check permission before receiving a message from a socket.
891 * @sock contains the socket structure.
892 * @msg contains the message structure.
893 * @size contains the size of message structure.
894 * @flags contains the operational flags.
895 * Return 0 if permission is granted.
896 * @socket_getsockname:
897 * Check permission before the local address (name) of the socket object
898 * @sock is retrieved.
899 * @sock contains the socket structure.
900 * Return 0 if permission is granted.
901 * @socket_getpeername:
902 * Check permission before the remote address (name) of a socket object
903 * @sock is retrieved.
904 * @sock contains the socket structure.
905 * Return 0 if permission is granted.
906 * @socket_getsockopt:
907 * Check permissions before retrieving the options associated with socket
909 * @sock contains the socket structure.
910 * @level contains the protocol level to retrieve option from.
911 * @optname contains the name of option to retrieve.
912 * Return 0 if permission is granted.
913 * @socket_setsockopt:
914 * Check permissions before setting the options associated with socket
916 * @sock contains the socket structure.
917 * @level contains the protocol level to set options for.
918 * @optname contains the name of the option to set.
919 * Return 0 if permission is granted.
921 * Checks permission before all or part of a connection on the socket
922 * @sock is shut down.
923 * @sock contains the socket structure.
924 * @how contains the flag indicating how future sends and receives are handled.
925 * Return 0 if permission is granted.
926 * @socket_sock_rcv_skb:
927 * Check permissions on incoming network packets. This hook is distinct
928 * from Netfilter's IP input hooks since it is the first time that the
929 * incoming sk_buff @skb has been associated with a particular socket, @sk.
930 * @sk contains the sock (not socket) associated with the incoming sk_buff.
931 * @skb contains the incoming network data.
932 * @socket_getpeersec_stream:
933 * This hook allows the security module to provide peer socket security
934 * state for unix or connected tcp sockets to userspace via getsockopt
935 * SO_GETPEERSEC. For tcp sockets this can be meaningful if the
936 * socket is associated with an ipsec SA.
937 * @sock is the local socket.
938 * @optval userspace memory where the security state is to be copied.
939 * @optlen userspace int where the module should copy the actual length
940 * of the security state.
941 * @len as input is the maximum length to copy to userspace provided
943 * Return 0 if all is well, otherwise, typical getsockopt return
945 * @socket_getpeersec_dgram:
946 * This hook allows the security module to provide peer socket security
947 * state for udp sockets on a per-packet basis to userspace via
948 * getsockopt SO_GETPEERSEC. The application must first have indicated
949 * the IP_PASSSEC option via getsockopt. It can then retrieve the
950 * security state returned by this hook for a packet via the SCM_SECURITY
951 * ancillary message type.
952 * @skb is the skbuff for the packet being queried
953 * @secdata is a pointer to a buffer in which to copy the security data
954 * @seclen is the maximum length for @secdata
955 * Return 0 on success, error on failure.
956 * @sk_alloc_security:
957 * Allocate and attach a security structure to the sk->sk_security field,
958 * which is used to copy security attributes between local stream sockets.
960 * Deallocate security structure.
961 * @sk_clone_security:
962 * Clone/copy security structure.
964 * Retrieve the LSM-specific secid for the sock to enable caching of network
967 * Sets the socket's isec sid to the sock's sid.
968 * @inet_conn_request:
969 * Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
971 * Sets the new child socket's sid to the openreq sid.
972 * @inet_conn_established:
973 * Sets the connection's peersid to the secmark on skb.
974 * @req_classify_flow:
975 * Sets the flow's sid to the openreq sid.
977 * Security hooks for XFRM operations.
979 * @xfrm_policy_alloc_security:
980 * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
981 * Database used by the XFRM system.
982 * @sec_ctx contains the security context information being provided by
983 * the user-level policy update program (e.g., setkey).
984 * Allocate a security structure to the xp->security field; the security
985 * field is initialized to NULL when the xfrm_policy is allocated.
986 * Return 0 if operation was successful (memory to allocate, legal context)
987 * @xfrm_policy_clone_security:
988 * @old_ctx contains an existing xfrm_sec_ctx.
989 * @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
990 * Allocate a security structure in new_ctxp that contains the
991 * information from the old_ctx structure.
992 * Return 0 if operation was successful (memory to allocate).
993 * @xfrm_policy_free_security:
994 * @ctx contains the xfrm_sec_ctx
995 * Deallocate xp->security.
996 * @xfrm_policy_delete_security:
997 * @ctx contains the xfrm_sec_ctx.
998 * Authorize deletion of xp->security.
999 * @xfrm_state_alloc_security:
1000 * @x contains the xfrm_state being added to the Security Association
1001 * Database by the XFRM system.
1002 * @sec_ctx contains the security context information being provided by
1003 * the user-level SA generation program (e.g., setkey or racoon).
1004 * @secid contains the secid from which to take the mls portion of the context.
1005 * Allocate a security structure to the x->security field; the security
1006 * field is initialized to NULL when the xfrm_state is allocated. Set the
1007 * context to correspond to either sec_ctx or polsec, with the mls portion
1008 * taken from secid in the latter case.
1009 * Return 0 if operation was successful (memory to allocate, legal context).
1010 * @xfrm_state_free_security:
1011 * @x contains the xfrm_state.
1012 * Deallocate x->security.
1013 * @xfrm_state_delete_security:
1014 * @x contains the xfrm_state.
1015 * Authorize deletion of x->security.
1016 * @xfrm_policy_lookup:
1017 * @ctx contains the xfrm_sec_ctx for which the access control is being
1019 * @fl_secid contains the flow security label that is used to authorize
1020 * access to the policy xp.
1021 * @dir contains the direction of the flow (input or output).
1022 * Check permission when a flow selects a xfrm_policy for processing
1023 * XFRMs on a packet. The hook is called when selecting either a
1024 * per-socket policy or a generic xfrm policy.
1025 * Return 0 if permission is granted, -ESRCH otherwise, or -errno
1027 * @xfrm_state_pol_flow_match:
1028 * @x contains the state to match.
1029 * @xp contains the policy to check for a match.
1030 * @fl contains the flow to check for a match.
1031 * Return 1 if there is a match.
1032 * @xfrm_decode_session:
1033 * @skb points to skb to decode.
1034 * @secid points to the flow key secid to set.
1035 * @ckall says if all xfrms used should be checked for same secid.
1036 * Return 0 if ckall is zero or all xfrms used have the same secid.
1038 * Security hooks affecting all Key Management operations
1041 * Permit allocation of a key and assign security data. Note that key does
1042 * not have a serial number assigned at this point.
1043 * @key points to the key.
1044 * @flags is the allocation flags
1045 * Return 0 if permission is granted, -ve error otherwise.
1047 * Notification of destruction; free security data.
1048 * @key points to the key.
1051 * See whether a specific operational right is granted to a process on a
1053 * @key_ref refers to the key (key pointer + possession attribute bit).
1054 * @cred points to the credentials to provide the context against which to
1055 * evaluate the security data on the key.
1056 * @perm describes the combination of permissions required of this key.
1057 * Return 1 if permission granted, 0 if permission denied and -ve it the
1058 * normal permissions model should be effected.
1060 * Get a textual representation of the security context attached to a key
1061 * for the purposes of honouring KEYCTL_GETSECURITY. This function
1062 * allocates the storage for the NUL-terminated string and the caller
1064 * @key points to the key to be queried.
1065 * @_buffer points to a pointer that should be set to point to the
1066 * resulting string (if no label or an error occurs).
1067 * Return the length of the string (including terminating NUL) or -ve if
1069 * May also return 0 (and a NULL buffer pointer) if there is no label.
1071 * Security hooks affecting all System V IPC operations.
1074 * Check permissions for access to IPC
1075 * @ipcp contains the kernel IPC permission structure
1076 * @flag contains the desired (requested) permission set
1077 * Return 0 if permission is granted.
1079 * Get the secid associated with the ipc object.
1080 * @ipcp contains the kernel IPC permission structure.
1081 * @secid contains a pointer to the location where result will be saved.
1082 * In case of failure, @secid will be set to zero.
1084 * Security hooks for individual messages held in System V IPC message queues
1085 * @msg_msg_alloc_security:
1086 * Allocate and attach a security structure to the msg->security field.
1087 * The security field is initialized to NULL when the structure is first
1089 * @msg contains the message structure to be modified.
1090 * Return 0 if operation was successful and permission is granted.
1091 * @msg_msg_free_security:
1092 * Deallocate the security structure for this message.
1093 * @msg contains the message structure to be modified.
1095 * Security hooks for System V IPC Message Queues
1097 * @msg_queue_alloc_security:
1098 * Allocate and attach a security structure to the
1099 * msq->q_perm.security field. The security field is initialized to
1100 * NULL when the structure is first created.
1101 * @msq contains the message queue structure to be modified.
1102 * Return 0 if operation was successful and permission is granted.
1103 * @msg_queue_free_security:
1104 * Deallocate security structure for this message queue.
1105 * @msq contains the message queue structure to be modified.
1106 * @msg_queue_associate:
1107 * Check permission when a message queue is requested through the
1108 * msgget system call. This hook is only called when returning the
1109 * message queue identifier for an existing message queue, not when a
1110 * new message queue is created.
1111 * @msq contains the message queue to act upon.
1112 * @msqflg contains the operation control flags.
1113 * Return 0 if permission is granted.
1114 * @msg_queue_msgctl:
1115 * Check permission when a message control operation specified by @cmd
1116 * is to be performed on the message queue @msq.
1117 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
1118 * @msq contains the message queue to act upon. May be NULL.
1119 * @cmd contains the operation to be performed.
1120 * Return 0 if permission is granted.
1121 * @msg_queue_msgsnd:
1122 * Check permission before a message, @msg, is enqueued on the message
1124 * @msq contains the message queue to send message to.
1125 * @msg contains the message to be enqueued.
1126 * @msqflg contains operational flags.
1127 * Return 0 if permission is granted.
1128 * @msg_queue_msgrcv:
1129 * Check permission before a message, @msg, is removed from the message
1130 * queue, @msq. The @target task structure contains a pointer to the
1131 * process that will be receiving the message (not equal to the current
1132 * process when inline receives are being performed).
1133 * @msq contains the message queue to retrieve message from.
1134 * @msg contains the message destination.
1135 * @target contains the task structure for recipient process.
1136 * @type contains the type of message requested.
1137 * @mode contains the operational flags.
1138 * Return 0 if permission is granted.
1140 * Security hooks for System V Shared Memory Segments
1142 * @shm_alloc_security:
1143 * Allocate and attach a security structure to the shp->shm_perm.security
1144 * field. The security field is initialized to NULL when the structure is
1146 * @shp contains the shared memory structure to be modified.
1147 * Return 0 if operation was successful and permission is granted.
1148 * @shm_free_security:
1149 * Deallocate the security struct for this memory segment.
1150 * @shp contains the shared memory structure to be modified.
1152 * Check permission when a shared memory region is requested through the
1153 * shmget system call. This hook is only called when returning the shared
1154 * memory region identifier for an existing region, not when a new shared
1155 * memory region is created.
1156 * @shp contains the shared memory structure to be modified.
1157 * @shmflg contains the operation control flags.
1158 * Return 0 if permission is granted.
1160 * Check permission when a shared memory control operation specified by
1161 * @cmd is to be performed on the shared memory region @shp.
1162 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1163 * @shp contains shared memory structure to be modified.
1164 * @cmd contains the operation to be performed.
1165 * Return 0 if permission is granted.
1167 * Check permissions prior to allowing the shmat system call to attach the
1168 * shared memory segment @shp to the data segment of the calling process.
1169 * The attaching address is specified by @shmaddr.
1170 * @shp contains the shared memory structure to be modified.
1171 * @shmaddr contains the address to attach memory region to.
1172 * @shmflg contains the operational flags.
1173 * Return 0 if permission is granted.
1175 * Security hooks for System V Semaphores
1177 * @sem_alloc_security:
1178 * Allocate and attach a security structure to the sma->sem_perm.security
1179 * field. The security field is initialized to NULL when the structure is
1181 * @sma contains the semaphore structure
1182 * Return 0 if operation was successful and permission is granted.
1183 * @sem_free_security:
1184 * deallocate security struct for this semaphore
1185 * @sma contains the semaphore structure.
1187 * Check permission when a semaphore is requested through the semget
1188 * system call. This hook is only called when returning the semaphore
1189 * identifier for an existing semaphore, not when a new one must be
1191 * @sma contains the semaphore structure.
1192 * @semflg contains the operation control flags.
1193 * Return 0 if permission is granted.
1195 * Check permission when a semaphore operation specified by @cmd is to be
1196 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
1197 * IPC_INFO or SEM_INFO.
1198 * @sma contains the semaphore structure. May be NULL.
1199 * @cmd contains the operation to be performed.
1200 * Return 0 if permission is granted.
1202 * Check permissions before performing operations on members of the
1203 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1205 * @sma contains the semaphore structure.
1206 * @sops contains the operations to perform.
1207 * @nsops contains the number of operations to perform.
1208 * @alter contains the flag indicating whether changes are to be made.
1209 * Return 0 if permission is granted.
1211 * @ptrace_may_access:
1212 * Check permission before allowing the current process to trace the
1214 * Security modules may also want to perform a process tracing check
1215 * during an execve in the set_security or apply_creds hooks of
1216 * tracing check during an execve in the bprm_set_creds hook of
1217 * binprm_security_ops if the process is being traced and its security
1218 * attributes would be changed by the execve.
1219 * @child contains the task_struct structure for the target process.
1220 * @mode contains the PTRACE_MODE flags indicating the form of access.
1221 * Return 0 if permission is granted.
1223 * Check that the @parent process has sufficient permission to trace the
1224 * current process before allowing the current process to present itself
1225 * to the @parent process for tracing.
1226 * The parent process will still have to undergo the ptrace_may_access
1227 * checks before it is allowed to trace this one.
1228 * @parent contains the task_struct structure for debugger process.
1229 * Return 0 if permission is granted.
1231 * Get the @effective, @inheritable, and @permitted capability sets for
1232 * the @target process. The hook may also perform permission checking to
1233 * determine if the current process is allowed to see the capability sets
1234 * of the @target process.
1235 * @target contains the task_struct structure for target process.
1236 * @effective contains the effective capability set.
1237 * @inheritable contains the inheritable capability set.
1238 * @permitted contains the permitted capability set.
1239 * Return 0 if the capability sets were successfully obtained.
1241 * Set the @effective, @inheritable, and @permitted capability sets for
1242 * the current process.
1243 * @new contains the new credentials structure for target process.
1244 * @old contains the current credentials structure for target process.
1245 * @effective contains the effective capability set.
1246 * @inheritable contains the inheritable capability set.
1247 * @permitted contains the permitted capability set.
1248 * Return 0 and update @new if permission is granted.
1250 * Check whether the @tsk process has the @cap capability in the indicated
1252 * @tsk contains the task_struct for the process.
1253 * @cred contains the credentials to use.
1254 * @cap contains the capability <include/linux/capability.h>.
1255 * @audit: Whether to write an audit message or not
1256 * Return 0 if the capability is granted for @tsk.
1258 * Check permission before enabling or disabling process accounting. If
1259 * accounting is being enabled, then @file refers to the open file used to
1260 * store accounting records. If accounting is being disabled, then @file
1262 * @file contains the file structure for the accounting file (may be NULL).
1263 * Return 0 if permission is granted.
1265 * Check permission before accessing the @table sysctl variable in the
1266 * manner specified by @op.
1267 * @table contains the ctl_table structure for the sysctl variable.
1268 * @op contains the operation (001 = search, 002 = write, 004 = read).
1269 * Return 0 if permission is granted.
1271 * Check permission before accessing the kernel message ring or changing
1272 * logging to the console.
1273 * See the syslog(2) manual page for an explanation of the @type values.
1274 * @type contains the type of action.
1275 * Return 0 if permission is granted.
1277 * Check permission to change the system time.
1278 * struct timespec and timezone are defined in include/linux/time.h
1279 * @ts contains new time
1280 * @tz contains new timezone
1281 * Return 0 if permission is granted.
1282 * @vm_enough_memory:
1283 * Check permissions for allocating a new virtual mapping.
1284 * @mm contains the mm struct it is being added to.
1285 * @pages contains the number of pages.
1286 * Return 0 if permission is granted.
1289 * Convert secid to security context.
1290 * @secid contains the security ID.
1291 * @secdata contains the pointer that stores the converted security context.
1293 * Convert security context to secid.
1294 * @secid contains the pointer to the generated security ID.
1295 * @secdata contains the security context.
1298 * Release the security context.
1299 * @secdata contains the security context.
1300 * @seclen contains the length of the security context.
1302 * Security hooks for Audit
1305 * Allocate and initialize an LSM audit rule structure.
1306 * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
1307 * @op contains the operator the rule uses.
1308 * @rulestr contains the context where the rule will be applied to.
1309 * @lsmrule contains a pointer to receive the result.
1310 * Return 0 if @lsmrule has been successfully set,
1311 * -EINVAL in case of an invalid rule.
1313 * @audit_rule_known:
1314 * Specifies whether given @rule contains any fields related to current LSM.
1315 * @rule contains the audit rule of interest.
1316 * Return 1 in case of relation found, 0 otherwise.
1318 * @audit_rule_match:
1319 * Determine if given @secid matches a rule previously approved
1320 * by @audit_rule_known.
1321 * @secid contains the security id in question.
1322 * @field contains the field which relates to current LSM.
1323 * @op contains the operator that will be used for matching.
1324 * @rule points to the audit rule that will be checked against.
1325 * @actx points to the audit context associated with the check.
1326 * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
1329 * Deallocate the LSM audit rule structure previously allocated by
1331 * @rule contains the allocated rule
1333 * This is the main security structure.
1335 struct security_operations {
1336 char name[SECURITY_NAME_MAX + 1];
1338 int (*ptrace_may_access) (struct task_struct *child, unsigned int mode);
1339 int (*ptrace_traceme) (struct task_struct *parent);
1340 int (*capget) (struct task_struct *target,
1341 kernel_cap_t *effective,
1342 kernel_cap_t *inheritable, kernel_cap_t *permitted);
1343 int (*capset) (struct cred *new,
1344 const struct cred *old,
1345 const kernel_cap_t *effective,
1346 const kernel_cap_t *inheritable,
1347 const kernel_cap_t *permitted);
1348 int (*capable) (struct task_struct *tsk, const struct cred *cred,
1349 int cap, int audit);
1350 int (*acct) (struct file *file);
1351 int (*sysctl) (struct ctl_table *table, int op);
1352 int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
1353 int (*quota_on) (struct dentry *dentry);
1354 int (*syslog) (int type);
1355 int (*settime) (struct timespec *ts, struct timezone *tz);
1356 int (*vm_enough_memory) (struct mm_struct *mm, long pages);
1358 int (*bprm_set_creds) (struct linux_binprm *bprm);
1359 int (*bprm_check_security) (struct linux_binprm *bprm);
1360 int (*bprm_secureexec) (struct linux_binprm *bprm);
1361 void (*bprm_committing_creds) (struct linux_binprm *bprm);
1362 void (*bprm_committed_creds) (struct linux_binprm *bprm);
1364 int (*sb_alloc_security) (struct super_block *sb);
1365 void (*sb_free_security) (struct super_block *sb);
1366 int (*sb_copy_data) (char *orig, char *copy);
1367 int (*sb_kern_mount) (struct super_block *sb, int flags, void *data);
1368 int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
1369 int (*sb_statfs) (struct dentry *dentry);
1370 int (*sb_mount) (char *dev_name, struct path *path,
1371 char *type, unsigned long flags, void *data);
1372 int (*sb_check_sb) (struct vfsmount *mnt, struct path *path);
1373 int (*sb_umount) (struct vfsmount *mnt, int flags);
1374 void (*sb_umount_close) (struct vfsmount *mnt);
1375 void (*sb_umount_busy) (struct vfsmount *mnt);
1376 void (*sb_post_remount) (struct vfsmount *mnt,
1377 unsigned long flags, void *data);
1378 void (*sb_post_addmount) (struct vfsmount *mnt,
1379 struct path *mountpoint);
1380 int (*sb_pivotroot) (struct path *old_path,
1381 struct path *new_path);
1382 void (*sb_post_pivotroot) (struct path *old_path,
1383 struct path *new_path);
1384 int (*sb_set_mnt_opts) (struct super_block *sb,
1385 struct security_mnt_opts *opts);
1386 void (*sb_clone_mnt_opts) (const struct super_block *oldsb,
1387 struct super_block *newsb);
1388 int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
1390 #ifdef CONFIG_SECURITY_PATH
1391 int (*path_unlink) (struct path *dir, struct dentry *dentry);
1392 int (*path_mkdir) (struct path *dir, struct dentry *dentry, int mode);
1393 int (*path_rmdir) (struct path *dir, struct dentry *dentry);
1394 int (*path_mknod) (struct path *dir, struct dentry *dentry, int mode,
1396 int (*path_truncate) (struct path *path, loff_t length,
1397 unsigned int time_attrs);
1398 int (*path_symlink) (struct path *dir, struct dentry *dentry,
1399 const char *old_name);
1400 int (*path_link) (struct dentry *old_dentry, struct path *new_dir,
1401 struct dentry *new_dentry);
1402 int (*path_rename) (struct path *old_dir, struct dentry *old_dentry,
1403 struct path *new_dir, struct dentry *new_dentry);
1406 int (*inode_alloc_security) (struct inode *inode);
1407 void (*inode_free_security) (struct inode *inode);
1408 int (*inode_init_security) (struct inode *inode, struct inode *dir,
1409 char **name, void **value, size_t *len);
1410 int (*inode_create) (struct inode *dir,
1411 struct dentry *dentry, int mode);
1412 int (*inode_link) (struct dentry *old_dentry,
1413 struct inode *dir, struct dentry *new_dentry);
1414 int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
1415 int (*inode_symlink) (struct inode *dir,
1416 struct dentry *dentry, const char *old_name);
1417 int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, int mode);
1418 int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
1419 int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
1420 int mode, dev_t dev);
1421 int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
1422 struct inode *new_dir, struct dentry *new_dentry);
1423 int (*inode_readlink) (struct dentry *dentry);
1424 int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
1425 int (*inode_permission) (struct inode *inode, int mask);
1426 int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
1427 int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
1428 void (*inode_delete) (struct inode *inode);
1429 int (*inode_setxattr) (struct dentry *dentry, const char *name,
1430 const void *value, size_t size, int flags);
1431 void (*inode_post_setxattr) (struct dentry *dentry, const char *name,
1432 const void *value, size_t size, int flags);
1433 int (*inode_getxattr) (struct dentry *dentry, const char *name);
1434 int (*inode_listxattr) (struct dentry *dentry);
1435 int (*inode_removexattr) (struct dentry *dentry, const char *name);
1436 int (*inode_need_killpriv) (struct dentry *dentry);
1437 int (*inode_killpriv) (struct dentry *dentry);
1438 int (*inode_getsecurity) (const struct inode *inode, const char *name, void **buffer, bool alloc);
1439 int (*inode_setsecurity) (struct inode *inode, const char *name, const void *value, size_t size, int flags);
1440 int (*inode_listsecurity) (struct inode *inode, char *buffer, size_t buffer_size);
1441 void (*inode_getsecid) (const struct inode *inode, u32 *secid);
1443 int (*file_permission) (struct file *file, int mask);
1444 int (*file_alloc_security) (struct file *file);
1445 void (*file_free_security) (struct file *file);
1446 int (*file_ioctl) (struct file *file, unsigned int cmd,
1448 int (*file_mmap) (struct file *file,
1449 unsigned long reqprot, unsigned long prot,
1450 unsigned long flags, unsigned long addr,
1451 unsigned long addr_only);
1452 int (*file_mprotect) (struct vm_area_struct *vma,
1453 unsigned long reqprot,
1454 unsigned long prot);
1455 int (*file_lock) (struct file *file, unsigned int cmd);
1456 int (*file_fcntl) (struct file *file, unsigned int cmd,
1458 int (*file_set_fowner) (struct file *file);
1459 int (*file_send_sigiotask) (struct task_struct *tsk,
1460 struct fown_struct *fown, int sig);
1461 int (*file_receive) (struct file *file);
1462 int (*dentry_open) (struct file *file, const struct cred *cred);
1464 int (*task_create) (unsigned long clone_flags);
1465 void (*cred_free) (struct cred *cred);
1466 int (*cred_prepare)(struct cred *new, const struct cred *old,
1468 void (*cred_commit)(struct cred *new, const struct cred *old);
1469 int (*kernel_act_as)(struct cred *new, u32 secid);
1470 int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
1471 int (*task_setuid) (uid_t id0, uid_t id1, uid_t id2, int flags);
1472 int (*task_fix_setuid) (struct cred *new, const struct cred *old,
1474 int (*task_setgid) (gid_t id0, gid_t id1, gid_t id2, int flags);
1475 int (*task_setpgid) (struct task_struct *p, pid_t pgid);
1476 int (*task_getpgid) (struct task_struct *p);
1477 int (*task_getsid) (struct task_struct *p);
1478 void (*task_getsecid) (struct task_struct *p, u32 *secid);
1479 int (*task_setgroups) (struct group_info *group_info);
1480 int (*task_setnice) (struct task_struct *p, int nice);
1481 int (*task_setioprio) (struct task_struct *p, int ioprio);
1482 int (*task_getioprio) (struct task_struct *p);
1483 int (*task_setrlimit) (unsigned int resource, struct rlimit *new_rlim);
1484 int (*task_setscheduler) (struct task_struct *p, int policy,
1485 struct sched_param *lp);
1486 int (*task_getscheduler) (struct task_struct *p);
1487 int (*task_movememory) (struct task_struct *p);
1488 int (*task_kill) (struct task_struct *p,
1489 struct siginfo *info, int sig, u32 secid);
1490 int (*task_wait) (struct task_struct *p);
1491 int (*task_prctl) (int option, unsigned long arg2,
1492 unsigned long arg3, unsigned long arg4,
1493 unsigned long arg5);
1494 void (*task_to_inode) (struct task_struct *p, struct inode *inode);
1496 int (*ipc_permission) (struct kern_ipc_perm *ipcp, short flag);
1497 void (*ipc_getsecid) (struct kern_ipc_perm *ipcp, u32 *secid);
1499 int (*msg_msg_alloc_security) (struct msg_msg *msg);
1500 void (*msg_msg_free_security) (struct msg_msg *msg);
1502 int (*msg_queue_alloc_security) (struct msg_queue *msq);
1503 void (*msg_queue_free_security) (struct msg_queue *msq);
1504 int (*msg_queue_associate) (struct msg_queue *msq, int msqflg);
1505 int (*msg_queue_msgctl) (struct msg_queue *msq, int cmd);
1506 int (*msg_queue_msgsnd) (struct msg_queue *msq,
1507 struct msg_msg *msg, int msqflg);
1508 int (*msg_queue_msgrcv) (struct msg_queue *msq,
1509 struct msg_msg *msg,
1510 struct task_struct *target,
1511 long type, int mode);
1513 int (*shm_alloc_security) (struct shmid_kernel *shp);
1514 void (*shm_free_security) (struct shmid_kernel *shp);
1515 int (*shm_associate) (struct shmid_kernel *shp, int shmflg);
1516 int (*shm_shmctl) (struct shmid_kernel *shp, int cmd);
1517 int (*shm_shmat) (struct shmid_kernel *shp,
1518 char __user *shmaddr, int shmflg);
1520 int (*sem_alloc_security) (struct sem_array *sma);
1521 void (*sem_free_security) (struct sem_array *sma);
1522 int (*sem_associate) (struct sem_array *sma, int semflg);
1523 int (*sem_semctl) (struct sem_array *sma, int cmd);
1524 int (*sem_semop) (struct sem_array *sma,
1525 struct sembuf *sops, unsigned nsops, int alter);
1527 int (*netlink_send) (struct sock *sk, struct sk_buff *skb);
1528 int (*netlink_recv) (struct sk_buff *skb, int cap);
1530 void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1532 int (*getprocattr) (struct task_struct *p, char *name, char **value);
1533 int (*setprocattr) (struct task_struct *p, char *name, void *value, size_t size);
1534 int (*secid_to_secctx) (u32 secid, char **secdata, u32 *seclen);
1535 int (*secctx_to_secid) (const char *secdata, u32 seclen, u32 *secid);
1536 void (*release_secctx) (char *secdata, u32 seclen);
1538 #ifdef CONFIG_SECURITY_NETWORK
1539 int (*unix_stream_connect) (struct socket *sock,
1540 struct socket *other, struct sock *newsk);
1541 int (*unix_may_send) (struct socket *sock, struct socket *other);
1543 int (*socket_create) (int family, int type, int protocol, int kern);
1544 int (*socket_post_create) (struct socket *sock, int family,
1545 int type, int protocol, int kern);
1546 int (*socket_bind) (struct socket *sock,
1547 struct sockaddr *address, int addrlen);
1548 int (*socket_connect) (struct socket *sock,
1549 struct sockaddr *address, int addrlen);
1550 int (*socket_listen) (struct socket *sock, int backlog);
1551 int (*socket_accept) (struct socket *sock, struct socket *newsock);
1552 int (*socket_sendmsg) (struct socket *sock,
1553 struct msghdr *msg, int size);
1554 int (*socket_recvmsg) (struct socket *sock,
1555 struct msghdr *msg, int size, int flags);
1556 int (*socket_getsockname) (struct socket *sock);
1557 int (*socket_getpeername) (struct socket *sock);
1558 int (*socket_getsockopt) (struct socket *sock, int level, int optname);
1559 int (*socket_setsockopt) (struct socket *sock, int level, int optname);
1560 int (*socket_shutdown) (struct socket *sock, int how);
1561 int (*socket_sock_rcv_skb) (struct sock *sk, struct sk_buff *skb);
1562 int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
1563 int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
1564 int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
1565 void (*sk_free_security) (struct sock *sk);
1566 void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
1567 void (*sk_getsecid) (struct sock *sk, u32 *secid);
1568 void (*sock_graft) (struct sock *sk, struct socket *parent);
1569 int (*inet_conn_request) (struct sock *sk, struct sk_buff *skb,
1570 struct request_sock *req);
1571 void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req);
1572 void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb);
1573 void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
1574 #endif /* CONFIG_SECURITY_NETWORK */
1576 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1577 int (*xfrm_policy_alloc_security) (struct xfrm_sec_ctx **ctxp,
1578 struct xfrm_user_sec_ctx *sec_ctx);
1579 int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
1580 void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
1581 int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
1582 int (*xfrm_state_alloc_security) (struct xfrm_state *x,
1583 struct xfrm_user_sec_ctx *sec_ctx,
1585 void (*xfrm_state_free_security) (struct xfrm_state *x);
1586 int (*xfrm_state_delete_security) (struct xfrm_state *x);
1587 int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1588 int (*xfrm_state_pol_flow_match) (struct xfrm_state *x,
1589 struct xfrm_policy *xp,
1591 int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall);
1592 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1594 /* key management security hooks */
1596 int (*key_alloc) (struct key *key, const struct cred *cred, unsigned long flags);
1597 void (*key_free) (struct key *key);
1598 int (*key_permission) (key_ref_t key_ref,
1599 const struct cred *cred,
1601 int (*key_getsecurity)(struct key *key, char **_buffer);
1602 #endif /* CONFIG_KEYS */
1605 int (*audit_rule_init) (u32 field, u32 op, char *rulestr, void **lsmrule);
1606 int (*audit_rule_known) (struct audit_krule *krule);
1607 int (*audit_rule_match) (u32 secid, u32 field, u32 op, void *lsmrule,
1608 struct audit_context *actx);
1609 void (*audit_rule_free) (void *lsmrule);
1610 #endif /* CONFIG_AUDIT */
1614 extern int security_init(void);
1615 extern int security_module_enable(struct security_operations *ops);
1616 extern int register_security(struct security_operations *ops);
1618 /* Security operations */
1619 int security_ptrace_may_access(struct task_struct *child, unsigned int mode);
1620 int security_ptrace_traceme(struct task_struct *parent);
1621 int security_capget(struct task_struct *target,
1622 kernel_cap_t *effective,
1623 kernel_cap_t *inheritable,
1624 kernel_cap_t *permitted);
1625 int security_capset(struct cred *new, const struct cred *old,
1626 const kernel_cap_t *effective,
1627 const kernel_cap_t *inheritable,
1628 const kernel_cap_t *permitted);
1629 int security_capable(int cap);
1630 int security_real_capable(struct task_struct *tsk, int cap);
1631 int security_real_capable_noaudit(struct task_struct *tsk, int cap);
1632 int security_acct(struct file *file);
1633 int security_sysctl(struct ctl_table *table, int op);
1634 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
1635 int security_quota_on(struct dentry *dentry);
1636 int security_syslog(int type);
1637 int security_settime(struct timespec *ts, struct timezone *tz);
1638 int security_vm_enough_memory(long pages);
1639 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
1640 int security_vm_enough_memory_kern(long pages);
1641 int security_bprm_set_creds(struct linux_binprm *bprm);
1642 int security_bprm_check(struct linux_binprm *bprm);
1643 void security_bprm_committing_creds(struct linux_binprm *bprm);
1644 void security_bprm_committed_creds(struct linux_binprm *bprm);
1645 int security_bprm_secureexec(struct linux_binprm *bprm);
1646 int security_sb_alloc(struct super_block *sb);
1647 void security_sb_free(struct super_block *sb);
1648 int security_sb_copy_data(char *orig, char *copy);
1649 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
1650 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
1651 int security_sb_statfs(struct dentry *dentry);
1652 int security_sb_mount(char *dev_name, struct path *path,
1653 char *type, unsigned long flags, void *data);
1654 int security_sb_check_sb(struct vfsmount *mnt, struct path *path);
1655 int security_sb_umount(struct vfsmount *mnt, int flags);
1656 void security_sb_umount_close(struct vfsmount *mnt);
1657 void security_sb_umount_busy(struct vfsmount *mnt);
1658 void security_sb_post_remount(struct vfsmount *mnt, unsigned long flags, void *data);
1659 void security_sb_post_addmount(struct vfsmount *mnt, struct path *mountpoint);
1660 int security_sb_pivotroot(struct path *old_path, struct path *new_path);
1661 void security_sb_post_pivotroot(struct path *old_path, struct path *new_path);
1662 int security_sb_set_mnt_opts(struct super_block *sb, struct security_mnt_opts *opts);
1663 void security_sb_clone_mnt_opts(const struct super_block *oldsb,
1664 struct super_block *newsb);
1665 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
1667 int security_inode_alloc(struct inode *inode);
1668 void security_inode_free(struct inode *inode);
1669 int security_inode_init_security(struct inode *inode, struct inode *dir,
1670 char **name, void **value, size_t *len);
1671 int security_inode_create(struct inode *dir, struct dentry *dentry, int mode);
1672 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1673 struct dentry *new_dentry);
1674 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
1675 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
1676 const char *old_name);
1677 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode);
1678 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
1679 int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev);
1680 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
1681 struct inode *new_dir, struct dentry *new_dentry);
1682 int security_inode_readlink(struct dentry *dentry);
1683 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
1684 int security_inode_permission(struct inode *inode, int mask);
1685 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
1686 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
1687 void security_inode_delete(struct inode *inode);
1688 int security_inode_setxattr(struct dentry *dentry, const char *name,
1689 const void *value, size_t size, int flags);
1690 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1691 const void *value, size_t size, int flags);
1692 int security_inode_getxattr(struct dentry *dentry, const char *name);
1693 int security_inode_listxattr(struct dentry *dentry);
1694 int security_inode_removexattr(struct dentry *dentry, const char *name);
1695 int security_inode_need_killpriv(struct dentry *dentry);
1696 int security_inode_killpriv(struct dentry *dentry);
1697 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
1698 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1699 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
1700 void security_inode_getsecid(const struct inode *inode, u32 *secid);
1701 int security_file_permission(struct file *file, int mask);
1702 int security_file_alloc(struct file *file);
1703 void security_file_free(struct file *file);
1704 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
1705 int security_file_mmap(struct file *file, unsigned long reqprot,
1706 unsigned long prot, unsigned long flags,
1707 unsigned long addr, unsigned long addr_only);
1708 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1709 unsigned long prot);
1710 int security_file_lock(struct file *file, unsigned int cmd);
1711 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
1712 int security_file_set_fowner(struct file *file);
1713 int security_file_send_sigiotask(struct task_struct *tsk,
1714 struct fown_struct *fown, int sig);
1715 int security_file_receive(struct file *file);
1716 int security_dentry_open(struct file *file, const struct cred *cred);
1717 int security_task_create(unsigned long clone_flags);
1718 void security_cred_free(struct cred *cred);
1719 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
1720 void security_commit_creds(struct cred *new, const struct cred *old);
1721 int security_kernel_act_as(struct cred *new, u32 secid);
1722 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
1723 int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags);
1724 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1726 int security_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags);
1727 int security_task_setpgid(struct task_struct *p, pid_t pgid);
1728 int security_task_getpgid(struct task_struct *p);
1729 int security_task_getsid(struct task_struct *p);
1730 void security_task_getsecid(struct task_struct *p, u32 *secid);
1731 int security_task_setgroups(struct group_info *group_info);
1732 int security_task_setnice(struct task_struct *p, int nice);
1733 int security_task_setioprio(struct task_struct *p, int ioprio);
1734 int security_task_getioprio(struct task_struct *p);
1735 int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim);
1736 int security_task_setscheduler(struct task_struct *p,
1737 int policy, struct sched_param *lp);
1738 int security_task_getscheduler(struct task_struct *p);
1739 int security_task_movememory(struct task_struct *p);
1740 int security_task_kill(struct task_struct *p, struct siginfo *info,
1741 int sig, u32 secid);
1742 int security_task_wait(struct task_struct *p);
1743 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1744 unsigned long arg4, unsigned long arg5);
1745 void security_task_to_inode(struct task_struct *p, struct inode *inode);
1746 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
1747 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
1748 int security_msg_msg_alloc(struct msg_msg *msg);
1749 void security_msg_msg_free(struct msg_msg *msg);
1750 int security_msg_queue_alloc(struct msg_queue *msq);
1751 void security_msg_queue_free(struct msg_queue *msq);
1752 int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
1753 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
1754 int security_msg_queue_msgsnd(struct msg_queue *msq,
1755 struct msg_msg *msg, int msqflg);
1756 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1757 struct task_struct *target, long type, int mode);
1758 int security_shm_alloc(struct shmid_kernel *shp);
1759 void security_shm_free(struct shmid_kernel *shp);
1760 int security_shm_associate(struct shmid_kernel *shp, int shmflg);
1761 int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
1762 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
1763 int security_sem_alloc(struct sem_array *sma);
1764 void security_sem_free(struct sem_array *sma);
1765 int security_sem_associate(struct sem_array *sma, int semflg);
1766 int security_sem_semctl(struct sem_array *sma, int cmd);
1767 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1768 unsigned nsops, int alter);
1769 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
1770 int security_getprocattr(struct task_struct *p, char *name, char **value);
1771 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
1772 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
1773 int security_netlink_recv(struct sk_buff *skb, int cap);
1774 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
1775 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
1776 void security_release_secctx(char *secdata, u32 seclen);
1778 #else /* CONFIG_SECURITY */
1779 struct security_mnt_opts {
1782 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
1786 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
1791 * This is the default capabilities functionality. Most of these functions
1792 * are just stubbed out, but a few must call the proper capable code.
1795 static inline int security_init(void)
1800 static inline int security_ptrace_may_access(struct task_struct *child,
1803 return cap_ptrace_may_access(child, mode);
1806 static inline int security_ptrace_traceme(struct task_struct *parent)
1808 return cap_ptrace_traceme(parent);
1811 static inline int security_capget(struct task_struct *target,
1812 kernel_cap_t *effective,
1813 kernel_cap_t *inheritable,
1814 kernel_cap_t *permitted)
1816 return cap_capget(target, effective, inheritable, permitted);
1819 static inline int security_capset(struct cred *new,
1820 const struct cred *old,
1821 const kernel_cap_t *effective,
1822 const kernel_cap_t *inheritable,
1823 const kernel_cap_t *permitted)
1825 return cap_capset(new, old, effective, inheritable, permitted);
1828 static inline int security_capable(int cap)
1830 return cap_capable(current, current_cred(), cap, SECURITY_CAP_AUDIT);
1833 static inline int security_real_capable(struct task_struct *tsk, int cap)
1838 ret = cap_capable(tsk, __task_cred(tsk), cap, SECURITY_CAP_AUDIT);
1844 int security_real_capable_noaudit(struct task_struct *tsk, int cap)
1849 ret = cap_capable(tsk, __task_cred(tsk), cap,
1850 SECURITY_CAP_NOAUDIT);
1855 static inline int security_acct(struct file *file)
1860 static inline int security_sysctl(struct ctl_table *table, int op)
1865 static inline int security_quotactl(int cmds, int type, int id,
1866 struct super_block *sb)
1871 static inline int security_quota_on(struct dentry *dentry)
1876 static inline int security_syslog(int type)
1878 return cap_syslog(type);
1881 static inline int security_settime(struct timespec *ts, struct timezone *tz)
1883 return cap_settime(ts, tz);
1886 static inline int security_vm_enough_memory(long pages)
1888 WARN_ON(current->mm == NULL);
1889 return cap_vm_enough_memory(current->mm, pages);
1892 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
1894 WARN_ON(mm == NULL);
1895 return cap_vm_enough_memory(mm, pages);
1898 static inline int security_vm_enough_memory_kern(long pages)
1900 /* If current->mm is a kernel thread then we will pass NULL,
1901 for this specific case that is fine */
1902 return cap_vm_enough_memory(current->mm, pages);
1905 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
1907 return cap_bprm_set_creds(bprm);
1910 static inline int security_bprm_check(struct linux_binprm *bprm)
1915 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
1919 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
1923 static inline int security_bprm_secureexec(struct linux_binprm *bprm)
1925 return cap_bprm_secureexec(bprm);
1928 static inline int security_sb_alloc(struct super_block *sb)
1933 static inline void security_sb_free(struct super_block *sb)
1936 static inline int security_sb_copy_data(char *orig, char *copy)
1941 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
1946 static inline int security_sb_show_options(struct seq_file *m,
1947 struct super_block *sb)
1952 static inline int security_sb_statfs(struct dentry *dentry)
1957 static inline int security_sb_mount(char *dev_name, struct path *path,
1958 char *type, unsigned long flags,
1964 static inline int security_sb_check_sb(struct vfsmount *mnt,
1970 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
1975 static inline void security_sb_umount_close(struct vfsmount *mnt)
1978 static inline void security_sb_umount_busy(struct vfsmount *mnt)
1981 static inline void security_sb_post_remount(struct vfsmount *mnt,
1982 unsigned long flags, void *data)
1985 static inline void security_sb_post_addmount(struct vfsmount *mnt,
1986 struct path *mountpoint)
1989 static inline int security_sb_pivotroot(struct path *old_path,
1990 struct path *new_path)
1995 static inline void security_sb_post_pivotroot(struct path *old_path,
1996 struct path *new_path)
1999 static inline int security_sb_set_mnt_opts(struct super_block *sb,
2000 struct security_mnt_opts *opts)
2005 static inline void security_sb_clone_mnt_opts(const struct super_block *oldsb,
2006 struct super_block *newsb)
2009 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
2014 static inline int security_inode_alloc(struct inode *inode)
2019 static inline void security_inode_free(struct inode *inode)
2022 static inline int security_inode_init_security(struct inode *inode,
2031 static inline int security_inode_create(struct inode *dir,
2032 struct dentry *dentry,
2038 static inline int security_inode_link(struct dentry *old_dentry,
2040 struct dentry *new_dentry)
2045 static inline int security_inode_unlink(struct inode *dir,
2046 struct dentry *dentry)
2051 static inline int security_inode_symlink(struct inode *dir,
2052 struct dentry *dentry,
2053 const char *old_name)
2058 static inline int security_inode_mkdir(struct inode *dir,
2059 struct dentry *dentry,
2065 static inline int security_inode_rmdir(struct inode *dir,
2066 struct dentry *dentry)
2071 static inline int security_inode_mknod(struct inode *dir,
2072 struct dentry *dentry,
2073 int mode, dev_t dev)
2078 static inline int security_inode_rename(struct inode *old_dir,
2079 struct dentry *old_dentry,
2080 struct inode *new_dir,
2081 struct dentry *new_dentry)
2086 static inline int security_inode_readlink(struct dentry *dentry)
2091 static inline int security_inode_follow_link(struct dentry *dentry,
2092 struct nameidata *nd)
2097 static inline int security_inode_permission(struct inode *inode, int mask)
2102 static inline int security_inode_setattr(struct dentry *dentry,
2108 static inline int security_inode_getattr(struct vfsmount *mnt,
2109 struct dentry *dentry)
2114 static inline void security_inode_delete(struct inode *inode)
2117 static inline int security_inode_setxattr(struct dentry *dentry,
2118 const char *name, const void *value, size_t size, int flags)
2120 return cap_inode_setxattr(dentry, name, value, size, flags);
2123 static inline void security_inode_post_setxattr(struct dentry *dentry,
2124 const char *name, const void *value, size_t size, int flags)
2127 static inline int security_inode_getxattr(struct dentry *dentry,
2133 static inline int security_inode_listxattr(struct dentry *dentry)
2138 static inline int security_inode_removexattr(struct dentry *dentry,
2141 return cap_inode_removexattr(dentry, name);
2144 static inline int security_inode_need_killpriv(struct dentry *dentry)
2146 return cap_inode_need_killpriv(dentry);
2149 static inline int security_inode_killpriv(struct dentry *dentry)
2151 return cap_inode_killpriv(dentry);
2154 static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
2159 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
2164 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
2169 static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
2174 static inline int security_file_permission(struct file *file, int mask)
2179 static inline int security_file_alloc(struct file *file)
2184 static inline void security_file_free(struct file *file)
2187 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
2193 static inline int security_file_mmap(struct file *file, unsigned long reqprot,
2195 unsigned long flags,
2197 unsigned long addr_only)
2202 static inline int security_file_mprotect(struct vm_area_struct *vma,
2203 unsigned long reqprot,
2209 static inline int security_file_lock(struct file *file, unsigned int cmd)
2214 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
2220 static inline int security_file_set_fowner(struct file *file)
2225 static inline int security_file_send_sigiotask(struct task_struct *tsk,
2226 struct fown_struct *fown,
2232 static inline int security_file_receive(struct file *file)
2237 static inline int security_dentry_open(struct file *file,
2238 const struct cred *cred)
2243 static inline int security_task_create(unsigned long clone_flags)
2248 static inline void security_cred_free(struct cred *cred)
2251 static inline int security_prepare_creds(struct cred *new,
2252 const struct cred *old,
2258 static inline void security_commit_creds(struct cred *new,
2259 const struct cred *old)
2263 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
2268 static inline int security_kernel_create_files_as(struct cred *cred,
2269 struct inode *inode)
2274 static inline int security_task_setuid(uid_t id0, uid_t id1, uid_t id2,
2280 static inline int security_task_fix_setuid(struct cred *new,
2281 const struct cred *old,
2284 return cap_task_fix_setuid(new, old, flags);
2287 static inline int security_task_setgid(gid_t id0, gid_t id1, gid_t id2,
2293 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
2298 static inline int security_task_getpgid(struct task_struct *p)
2303 static inline int security_task_getsid(struct task_struct *p)
2308 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
2313 static inline int security_task_setgroups(struct group_info *group_info)
2318 static inline int security_task_setnice(struct task_struct *p, int nice)
2320 return cap_task_setnice(p, nice);
2323 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
2325 return cap_task_setioprio(p, ioprio);
2328 static inline int security_task_getioprio(struct task_struct *p)
2333 static inline int security_task_setrlimit(unsigned int resource,
2334 struct rlimit *new_rlim)
2339 static inline int security_task_setscheduler(struct task_struct *p,
2341 struct sched_param *lp)
2343 return cap_task_setscheduler(p, policy, lp);
2346 static inline int security_task_getscheduler(struct task_struct *p)
2351 static inline int security_task_movememory(struct task_struct *p)
2356 static inline int security_task_kill(struct task_struct *p,
2357 struct siginfo *info, int sig,
2363 static inline int security_task_wait(struct task_struct *p)
2368 static inline int security_task_prctl(int option, unsigned long arg2,
2373 return cap_task_prctl(option, arg2, arg3, arg3, arg5);
2376 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
2379 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
2385 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
2390 static inline int security_msg_msg_alloc(struct msg_msg *msg)
2395 static inline void security_msg_msg_free(struct msg_msg *msg)
2398 static inline int security_msg_queue_alloc(struct msg_queue *msq)
2403 static inline void security_msg_queue_free(struct msg_queue *msq)
2406 static inline int security_msg_queue_associate(struct msg_queue *msq,
2412 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
2417 static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
2418 struct msg_msg *msg, int msqflg)
2423 static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
2424 struct msg_msg *msg,
2425 struct task_struct *target,
2426 long type, int mode)
2431 static inline int security_shm_alloc(struct shmid_kernel *shp)
2436 static inline void security_shm_free(struct shmid_kernel *shp)
2439 static inline int security_shm_associate(struct shmid_kernel *shp,
2445 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
2450 static inline int security_shm_shmat(struct shmid_kernel *shp,
2451 char __user *shmaddr, int shmflg)
2456 static inline int security_sem_alloc(struct sem_array *sma)
2461 static inline void security_sem_free(struct sem_array *sma)
2464 static inline int security_sem_associate(struct sem_array *sma, int semflg)
2469 static inline int security_sem_semctl(struct sem_array *sma, int cmd)
2474 static inline int security_sem_semop(struct sem_array *sma,
2475 struct sembuf *sops, unsigned nsops,
2481 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
2484 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
2489 static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2494 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
2496 return cap_netlink_send(sk, skb);
2499 static inline int security_netlink_recv(struct sk_buff *skb, int cap)
2501 return cap_netlink_recv(skb, cap);
2504 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2509 static inline int security_secctx_to_secid(const char *secdata,
2516 static inline void security_release_secctx(char *secdata, u32 seclen)
2519 #endif /* CONFIG_SECURITY */
2521 #ifdef CONFIG_SECURITY_NETWORK
2523 int security_unix_stream_connect(struct socket *sock, struct socket *other,
2524 struct sock *newsk);
2525 int security_unix_may_send(struct socket *sock, struct socket *other);
2526 int security_socket_create(int family, int type, int protocol, int kern);
2527 int security_socket_post_create(struct socket *sock, int family,
2528 int type, int protocol, int kern);
2529 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
2530 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
2531 int security_socket_listen(struct socket *sock, int backlog);
2532 int security_socket_accept(struct socket *sock, struct socket *newsock);
2533 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
2534 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2535 int size, int flags);
2536 int security_socket_getsockname(struct socket *sock);
2537 int security_socket_getpeername(struct socket *sock);
2538 int security_socket_getsockopt(struct socket *sock, int level, int optname);
2539 int security_socket_setsockopt(struct socket *sock, int level, int optname);
2540 int security_socket_shutdown(struct socket *sock, int how);
2541 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
2542 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2543 int __user *optlen, unsigned len);
2544 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
2545 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
2546 void security_sk_free(struct sock *sk);
2547 void security_sk_clone(const struct sock *sk, struct sock *newsk);
2548 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
2549 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
2550 void security_sock_graft(struct sock*sk, struct socket *parent);
2551 int security_inet_conn_request(struct sock *sk,
2552 struct sk_buff *skb, struct request_sock *req);
2553 void security_inet_csk_clone(struct sock *newsk,
2554 const struct request_sock *req);
2555 void security_inet_conn_established(struct sock *sk,
2556 struct sk_buff *skb);
2558 #else /* CONFIG_SECURITY_NETWORK */
2559 static inline int security_unix_stream_connect(struct socket *sock,
2560 struct socket *other,
2566 static inline int security_unix_may_send(struct socket *sock,
2567 struct socket *other)
2572 static inline int security_socket_create(int family, int type,
2573 int protocol, int kern)
2578 static inline int security_socket_post_create(struct socket *sock,
2581 int protocol, int kern)
2586 static inline int security_socket_bind(struct socket *sock,
2587 struct sockaddr *address,
2593 static inline int security_socket_connect(struct socket *sock,
2594 struct sockaddr *address,
2600 static inline int security_socket_listen(struct socket *sock, int backlog)
2605 static inline int security_socket_accept(struct socket *sock,
2606 struct socket *newsock)
2611 static inline int security_socket_sendmsg(struct socket *sock,
2612 struct msghdr *msg, int size)
2617 static inline int security_socket_recvmsg(struct socket *sock,
2618 struct msghdr *msg, int size,
2624 static inline int security_socket_getsockname(struct socket *sock)
2629 static inline int security_socket_getpeername(struct socket *sock)
2634 static inline int security_socket_getsockopt(struct socket *sock,
2635 int level, int optname)
2640 static inline int security_socket_setsockopt(struct socket *sock,
2641 int level, int optname)
2646 static inline int security_socket_shutdown(struct socket *sock, int how)
2650 static inline int security_sock_rcv_skb(struct sock *sk,
2651 struct sk_buff *skb)
2656 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2657 int __user *optlen, unsigned len)
2659 return -ENOPROTOOPT;
2662 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
2664 return -ENOPROTOOPT;
2667 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2672 static inline void security_sk_free(struct sock *sk)
2676 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
2680 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
2684 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2688 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
2692 static inline int security_inet_conn_request(struct sock *sk,
2693 struct sk_buff *skb, struct request_sock *req)
2698 static inline void security_inet_csk_clone(struct sock *newsk,
2699 const struct request_sock *req)
2703 static inline void security_inet_conn_established(struct sock *sk,
2704 struct sk_buff *skb)
2707 #endif /* CONFIG_SECURITY_NETWORK */
2709 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2711 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx);
2712 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
2713 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
2714 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
2715 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
2716 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2717 struct xfrm_sec_ctx *polsec, u32 secid);
2718 int security_xfrm_state_delete(struct xfrm_state *x);
2719 void security_xfrm_state_free(struct xfrm_state *x);
2720 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
2721 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2722 struct xfrm_policy *xp, struct flowi *fl);
2723 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
2724 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
2726 #else /* CONFIG_SECURITY_NETWORK_XFRM */
2728 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
2733 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
2738 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
2742 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
2747 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
2748 struct xfrm_user_sec_ctx *sec_ctx)
2753 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2754 struct xfrm_sec_ctx *polsec, u32 secid)
2759 static inline void security_xfrm_state_free(struct xfrm_state *x)
2763 static inline int security_xfrm_state_delete(struct xfrm_state *x)
2768 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
2773 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2774 struct xfrm_policy *xp, struct flowi *fl)
2779 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
2784 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2788 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2790 #ifdef CONFIG_SECURITY_PATH
2791 int security_path_unlink(struct path *dir, struct dentry *dentry);
2792 int security_path_mkdir(struct path *dir, struct dentry *dentry, int mode);
2793 int security_path_rmdir(struct path *dir, struct dentry *dentry);
2794 int security_path_mknod(struct path *dir, struct dentry *dentry, int mode,
2796 int security_path_truncate(struct path *path, loff_t length,
2797 unsigned int time_attrs);
2798 int security_path_symlink(struct path *dir, struct dentry *dentry,
2799 const char *old_name);
2800 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
2801 struct dentry *new_dentry);
2802 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
2803 struct path *new_dir, struct dentry *new_dentry);
2804 #else /* CONFIG_SECURITY_PATH */
2805 static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
2810 static inline int security_path_mkdir(struct path *dir, struct dentry *dentry,
2816 static inline int security_path_rmdir(struct path *dir, struct dentry *dentry)
2821 static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
2822 int mode, unsigned int dev)
2827 static inline int security_path_truncate(struct path *path, loff_t length,
2828 unsigned int time_attrs)
2833 static inline int security_path_symlink(struct path *dir, struct dentry *dentry,
2834 const char *old_name)
2839 static inline int security_path_link(struct dentry *old_dentry,
2840 struct path *new_dir,
2841 struct dentry *new_dentry)
2846 static inline int security_path_rename(struct path *old_dir,
2847 struct dentry *old_dentry,
2848 struct path *new_dir,
2849 struct dentry *new_dentry)
2853 #endif /* CONFIG_SECURITY_PATH */
2856 #ifdef CONFIG_SECURITY
2858 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
2859 void security_key_free(struct key *key);
2860 int security_key_permission(key_ref_t key_ref,
2861 const struct cred *cred, key_perm_t perm);
2862 int security_key_getsecurity(struct key *key, char **_buffer);
2866 static inline int security_key_alloc(struct key *key,
2867 const struct cred *cred,
2868 unsigned long flags)
2873 static inline void security_key_free(struct key *key)
2877 static inline int security_key_permission(key_ref_t key_ref,
2878 const struct cred *cred,
2884 static inline int security_key_getsecurity(struct key *key, char **_buffer)
2891 #endif /* CONFIG_KEYS */
2894 #ifdef CONFIG_SECURITY
2895 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
2896 int security_audit_rule_known(struct audit_krule *krule);
2897 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
2898 struct audit_context *actx);
2899 void security_audit_rule_free(void *lsmrule);
2903 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
2909 static inline int security_audit_rule_known(struct audit_krule *krule)
2914 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
2915 void *lsmrule, struct audit_context *actx)
2920 static inline void security_audit_rule_free(void *lsmrule)
2923 #endif /* CONFIG_SECURITY */
2924 #endif /* CONFIG_AUDIT */
2926 #ifdef CONFIG_SECURITYFS
2928 extern struct dentry *securityfs_create_file(const char *name, mode_t mode,
2929 struct dentry *parent, void *data,
2930 const struct file_operations *fops);
2931 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
2932 extern void securityfs_remove(struct dentry *dentry);
2934 #else /* CONFIG_SECURITYFS */
2936 static inline struct dentry *securityfs_create_dir(const char *name,
2937 struct dentry *parent)
2939 return ERR_PTR(-ENODEV);
2942 static inline struct dentry *securityfs_create_file(const char *name,
2944 struct dentry *parent,
2946 const struct file_operations *fops)
2948 return ERR_PTR(-ENODEV);
2951 static inline void securityfs_remove(struct dentry *dentry)
2956 #endif /* ! __LINUX_SECURITY_H */