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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Linux Security plug
3 *
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)
9 *
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.
14 *
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.
19 *
20 */
21
22#ifndef __LINUX_SECURITY_H
23#define __LINUX_SECURITY_H
24
25#include <linux/fs.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>
David Howells29db9192005-10-30 15:02:44 -080033#include <linux/key.h>
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -070034#include <linux/xfrm.h>
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -070035#include <net/flow.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070036
Andrew Morgan72c2d582007-10-18 03:05:59 -070037extern unsigned securebits;
38
Ahmed S. Darwish076c54c2008-03-06 18:09:10 +020039/* Maximum number of letters for an LSM name string */
40#define SECURITY_NAME_MAX 10
41
Linus Torvalds1da177e2005-04-16 15:20:36 -070042struct ctl_table;
Ahmed S. Darwish03d37d22008-03-01 22:00:05 +020043struct audit_krule;
Linus Torvalds1da177e2005-04-16 15:20:36 -070044
45/*
46 * These functions are in security/capability.c and are used
47 * as the default capabilities functions
48 */
49extern int cap_capable (struct task_struct *tsk, int cap);
50extern int cap_settime (struct timespec *ts, struct timezone *tz);
51extern int cap_ptrace (struct task_struct *parent, struct task_struct *child);
52extern int cap_capget (struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
53extern int cap_capset_check (struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
54extern void cap_capset_set (struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
55extern int cap_bprm_set_security (struct linux_binprm *bprm);
56extern void cap_bprm_apply_creds (struct linux_binprm *bprm, int unsafe);
57extern int cap_bprm_secureexec(struct linux_binprm *bprm);
58extern int cap_inode_setxattr(struct dentry *dentry, char *name, void *value, size_t size, int flags);
59extern int cap_inode_removexattr(struct dentry *dentry, char *name);
Serge E. Hallynb5376772007-10-16 23:31:36 -070060extern int cap_inode_need_killpriv(struct dentry *dentry);
61extern int cap_inode_killpriv(struct dentry *dentry);
Linus Torvalds1da177e2005-04-16 15:20:36 -070062extern int cap_task_post_setuid (uid_t old_ruid, uid_t old_euid, uid_t old_suid, int flags);
63extern void cap_task_reparent_to_init (struct task_struct *p);
Serge E. Hallynb5376772007-10-16 23:31:36 -070064extern int cap_task_setscheduler (struct task_struct *p, int policy, struct sched_param *lp);
65extern int cap_task_setioprio (struct task_struct *p, int ioprio);
66extern int cap_task_setnice (struct task_struct *p, int nice);
Linus Torvalds1da177e2005-04-16 15:20:36 -070067extern int cap_syslog (int type);
James Morris20510f22007-10-16 23:31:32 -070068extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
Linus Torvalds1da177e2005-04-16 15:20:36 -070069
70struct msghdr;
71struct sk_buff;
72struct sock;
73struct sockaddr;
74struct socket;
Trent Jaegerdf718372005-12-13 23:12:27 -080075struct flowi;
76struct dst_entry;
77struct xfrm_selector;
78struct xfrm_policy;
79struct xfrm_state;
80struct xfrm_user_sec_ctx;
Linus Torvalds1da177e2005-04-16 15:20:36 -070081
82extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
Darrel Goeddelc7bdb542006-06-27 13:26:11 -070083extern int cap_netlink_recv(struct sk_buff *skb, int cap);
Linus Torvalds1da177e2005-04-16 15:20:36 -070084
Eric Parised032182007-06-28 15:55:21 -040085extern unsigned long mmap_min_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -070086/*
87 * Values used in the task_security_ops calls
88 */
89/* setuid or setgid, id0 == uid or gid */
90#define LSM_SETID_ID 1
91
92/* setreuid or setregid, id0 == real, id1 == eff */
93#define LSM_SETID_RE 2
94
95/* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
96#define LSM_SETID_RES 4
97
98/* setfsuid or setfsgid, id0 == fsuid or fsgid */
99#define LSM_SETID_FS 8
100
101/* forward declares to avoid warnings */
102struct nfsctl_arg;
103struct sched_param;
104struct swap_info_struct;
Venkat Yekkirala4237c752006-07-24 23:32:50 -0700105struct request_sock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106
107/* bprm_apply_creds unsafe reasons */
108#define LSM_UNSAFE_SHARE 1
109#define LSM_UNSAFE_PTRACE 2
110#define LSM_UNSAFE_PTRACE_CAP 4
111
112#ifdef CONFIG_SECURITY
113
Eric Parise0007522008-03-05 10:31:54 -0500114struct security_mnt_opts {
115 char **mnt_opts;
116 int *mnt_opts_flags;
117 int num_mnt_opts;
118};
119
120static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
121{
122 opts->mnt_opts = NULL;
123 opts->mnt_opts_flags = NULL;
124 opts->num_mnt_opts = 0;
125}
126
127static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
128{
129 int i;
130 if (opts->mnt_opts)
131 for(i = 0; i < opts->num_mnt_opts; i++)
132 kfree(opts->mnt_opts[i]);
133 kfree(opts->mnt_opts);
134 opts->mnt_opts = NULL;
135 kfree(opts->mnt_opts_flags);
136 opts->mnt_opts_flags = NULL;
137 opts->num_mnt_opts = 0;
138}
139
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140/**
141 * struct security_operations - main security structure
142 *
Ahmed S. Darwish076c54c2008-03-06 18:09:10 +0200143 * Security module identifier.
144 *
145 * @name:
146 * A string that acts as a unique identifeir for the LSM with max number
147 * of characters = SECURITY_NAME_MAX.
148 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149 * Security hooks for program execution operations.
150 *
151 * @bprm_alloc_security:
152 * Allocate and attach a security structure to the @bprm->security field.
153 * The security field is initialized to NULL when the bprm structure is
154 * allocated.
155 * @bprm contains the linux_binprm structure to be modified.
156 * Return 0 if operation was successful.
157 * @bprm_free_security:
158 * @bprm contains the linux_binprm structure to be modified.
159 * Deallocate and clear the @bprm->security field.
160 * @bprm_apply_creds:
161 * Compute and set the security attributes of a process being transformed
162 * by an execve operation based on the old attributes (current->security)
163 * and the information saved in @bprm->security by the set_security hook.
164 * Since this hook function (and its caller) are void, this hook can not
165 * return an error. However, it can leave the security attributes of the
166 * process unchanged if an access failure occurs at this point.
167 * bprm_apply_creds is called under task_lock. @unsafe indicates various
168 * reasons why it may be unsafe to change security state.
169 * @bprm contains the linux_binprm structure.
170 * @bprm_post_apply_creds:
171 * Runs after bprm_apply_creds with the task_lock dropped, so that
172 * functions which cannot be called safely under the task_lock can
173 * be used. This hook is a good place to perform state changes on
174 * the process such as closing open file descriptors to which access
175 * is no longer granted if the attributes were changed.
176 * Note that a security module might need to save state between
177 * bprm_apply_creds and bprm_post_apply_creds to store the decision
178 * on whether the process may proceed.
179 * @bprm contains the linux_binprm structure.
180 * @bprm_set_security:
181 * Save security information in the bprm->security field, typically based
182 * on information about the bprm->file, for later use by the apply_creds
183 * hook. This hook may also optionally check permissions (e.g. for
184 * transitions between security domains).
185 * This hook may be called multiple times during a single execve, e.g. for
186 * interpreters. The hook can tell whether it has already been called by
187 * checking to see if @bprm->security is non-NULL. If so, then the hook
188 * may decide either to retain the security information saved earlier or
189 * to replace it.
190 * @bprm contains the linux_binprm structure.
191 * Return 0 if the hook is successful and permission is granted.
192 * @bprm_check_security:
193 * This hook mediates the point when a search for a binary handler will
194 * begin. It allows a check the @bprm->security value which is set in
195 * the preceding set_security call. The primary difference from
196 * set_security is that the argv list and envp list are reliably
197 * available in @bprm. This hook may be called multiple times
198 * during a single execve; and in each pass set_security is called
199 * first.
200 * @bprm contains the linux_binprm structure.
201 * Return 0 if the hook is successful and permission is granted.
202 * @bprm_secureexec:
203 * Return a boolean value (0 or 1) indicating whether a "secure exec"
204 * is required. The flag is passed in the auxiliary table
205 * on the initial stack to the ELF interpreter to indicate whether libc
206 * should enable secure mode.
207 * @bprm contains the linux_binprm structure.
208 *
209 * Security hooks for filesystem operations.
210 *
211 * @sb_alloc_security:
212 * Allocate and attach a security structure to the sb->s_security field.
213 * The s_security field is initialized to NULL when the structure is
214 * allocated.
215 * @sb contains the super_block structure to be modified.
216 * Return 0 if operation was successful.
217 * @sb_free_security:
218 * Deallocate and clear the sb->s_security field.
219 * @sb contains the super_block structure to be modified.
220 * @sb_statfs:
David Howells726c3342006-06-23 02:02:58 -0700221 * Check permission before obtaining filesystem statistics for the @mnt
222 * mountpoint.
223 * @dentry is a handle on the superblock for the filesystem.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224 * Return 0 if permission is granted.
225 * @sb_mount:
226 * Check permission before an object specified by @dev_name is mounted on
227 * the mount point named by @nd. For an ordinary mount, @dev_name
228 * identifies a device if the file system type requires a device. For a
229 * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a
230 * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
231 * pathname of the object being mounted.
232 * @dev_name contains the name for object being mounted.
233 * @nd contains the nameidata structure for mount point object.
234 * @type contains the filesystem type.
235 * @flags contains the mount flags.
236 * @data contains the filesystem-specific data.
237 * Return 0 if permission is granted.
238 * @sb_copy_data:
239 * Allow mount option data to be copied prior to parsing by the filesystem,
240 * so that the security module can extract security-specific mount
241 * options cleanly (a filesystem may modify the data e.g. with strsep()).
242 * This also allows the original mount data to be stripped of security-
243 * specific options to avoid having to make filesystems aware of them.
244 * @type the type of filesystem being mounted.
245 * @orig the original mount data copied from userspace.
246 * @copy copied data which will be passed to the security module.
247 * Returns 0 if the copy was successful.
248 * @sb_check_sb:
249 * Check permission before the device with superblock @mnt->sb is mounted
250 * on the mount point named by @nd.
251 * @mnt contains the vfsmount for device being mounted.
252 * @nd contains the nameidata object for the mount point.
253 * Return 0 if permission is granted.
254 * @sb_umount:
255 * Check permission before the @mnt file system is unmounted.
256 * @mnt contains the mounted file system.
257 * @flags contains the unmount flags, e.g. MNT_FORCE.
258 * Return 0 if permission is granted.
259 * @sb_umount_close:
260 * Close any files in the @mnt mounted filesystem that are held open by
261 * the security module. This hook is called during an umount operation
262 * prior to checking whether the filesystem is still busy.
263 * @mnt contains the mounted filesystem.
264 * @sb_umount_busy:
265 * Handle a failed umount of the @mnt mounted filesystem, e.g. re-opening
266 * any files that were closed by umount_close. This hook is called during
267 * an umount operation if the umount fails after a call to the
268 * umount_close hook.
269 * @mnt contains the mounted filesystem.
270 * @sb_post_remount:
271 * Update the security module's state when a filesystem is remounted.
272 * This hook is only called if the remount was successful.
273 * @mnt contains the mounted file system.
274 * @flags contains the new filesystem flags.
275 * @data contains the filesystem-specific data.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276 * @sb_post_addmount:
277 * Update the security module's state when a filesystem is mounted.
278 * This hook is called any time a mount is successfully grafetd to
279 * the tree.
280 * @mnt contains the mounted filesystem.
281 * @mountpoint_nd contains the nameidata structure for the mount point.
282 * @sb_pivotroot:
283 * Check permission before pivoting the root filesystem.
284 * @old_nd contains the nameidata structure for the new location of the current root (put_old).
285 * @new_nd contains the nameidata structure for the new root (new_root).
286 * Return 0 if permission is granted.
287 * @sb_post_pivotroot:
288 * Update module state after a successful pivot.
289 * @old_nd contains the nameidata structure for the old root.
290 * @new_nd contains the nameidata structure for the new root.
Eric Parisc9180a52007-11-30 13:00:35 -0500291 * @sb_get_mnt_opts:
292 * Get the security relevant mount options used for a superblock
293 * @sb the superblock to get security mount options from
Eric Parise0007522008-03-05 10:31:54 -0500294 * @opts binary data structure containing all lsm mount data
Eric Parisc9180a52007-11-30 13:00:35 -0500295 * @sb_set_mnt_opts:
296 * Set the security relevant mount options used for a superblock
297 * @sb the superblock to set security mount options for
Eric Parise0007522008-03-05 10:31:54 -0500298 * @opts binary data structure containing all lsm mount data
Eric Parisc9180a52007-11-30 13:00:35 -0500299 * @sb_clone_mnt_opts:
300 * Copy all security options from a given superblock to another
301 * @oldsb old superblock which contain information to clone
302 * @newsb new superblock which needs filled in
Eric Parise0007522008-03-05 10:31:54 -0500303 * @sb_parse_opts_str:
304 * Parse a string of security data filling in the opts structure
305 * @options string containing all mount options known by the LSM
306 * @opts binary data structure usable by the LSM
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307 *
308 * Security hooks for inode operations.
309 *
310 * @inode_alloc_security:
311 * Allocate and attach a security structure to @inode->i_security. The
312 * i_security field is initialized to NULL when the inode structure is
313 * allocated.
314 * @inode contains the inode structure.
315 * Return 0 if operation was successful.
316 * @inode_free_security:
317 * @inode contains the inode structure.
318 * Deallocate the inode security structure and set @inode->i_security to
319 * NULL.
Stephen Smalley5e41ff92005-09-09 13:01:35 -0700320 * @inode_init_security:
321 * Obtain the security attribute name suffix and value to set on a newly
322 * created inode and set up the incore security field for the new inode.
323 * This hook is called by the fs code as part of the inode creation
324 * transaction and provides for atomic labeling of the inode, unlike
325 * the post_create/mkdir/... hooks called by the VFS. The hook function
326 * is expected to allocate the name and value via kmalloc, with the caller
327 * being responsible for calling kfree after using them.
328 * If the security module does not use security attributes or does
329 * not wish to put a security attribute on this particular inode,
330 * then it should return -EOPNOTSUPP to skip this processing.
331 * @inode contains the inode structure of the newly created inode.
332 * @dir contains the inode structure of the parent directory.
333 * @name will be set to the allocated name suffix (e.g. selinux).
334 * @value will be set to the allocated attribute value.
335 * @len will be set to the length of the value.
336 * Returns 0 if @name and @value have been successfully set,
337 * -EOPNOTSUPP if no security attribute is needed, or
338 * -ENOMEM on memory allocation failure.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339 * @inode_create:
340 * Check permission to create a regular file.
341 * @dir contains inode structure of the parent of the new file.
342 * @dentry contains the dentry structure for the file to be created.
343 * @mode contains the file mode of the file to be created.
344 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345 * @inode_link:
346 * Check permission before creating a new hard link to a file.
347 * @old_dentry contains the dentry structure for an existing link to the file.
348 * @dir contains the inode structure of the parent directory of the new link.
349 * @new_dentry contains the dentry structure for the new link.
350 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351 * @inode_unlink:
352 * Check the permission to remove a hard link to a file.
353 * @dir contains the inode structure of parent directory of the file.
354 * @dentry contains the dentry structure for file to be unlinked.
355 * Return 0 if permission is granted.
356 * @inode_symlink:
357 * Check the permission to create a symbolic link to a file.
358 * @dir contains the inode structure of parent directory of the symbolic link.
359 * @dentry contains the dentry structure of the symbolic link.
360 * @old_name contains the pathname of file.
361 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362 * @inode_mkdir:
363 * Check permissions to create a new directory in the existing directory
364 * associated with inode strcture @dir.
365 * @dir containst the inode structure of parent of the directory to be created.
366 * @dentry contains the dentry structure of new directory.
367 * @mode contains the mode of new directory.
368 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369 * @inode_rmdir:
370 * Check the permission to remove a directory.
371 * @dir contains the inode structure of parent of the directory to be removed.
372 * @dentry contains the dentry structure of directory to be removed.
373 * Return 0 if permission is granted.
374 * @inode_mknod:
375 * Check permissions when creating a special file (or a socket or a fifo
376 * file created via the mknod system call). Note that if mknod operation
377 * is being done for a regular file, then the create hook will be called
378 * and not this hook.
379 * @dir contains the inode structure of parent of the new file.
380 * @dentry contains the dentry structure of the new file.
381 * @mode contains the mode of the new file.
Michael Opdenacker59c51592007-05-09 08:57:56 +0200382 * @dev contains the device number.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384 * @inode_rename:
385 * Check for permission to rename a file or directory.
386 * @old_dir contains the inode structure for parent of the old link.
387 * @old_dentry contains the dentry structure of the old link.
388 * @new_dir contains the inode structure for parent of the new link.
389 * @new_dentry contains the dentry structure of the new link.
390 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700391 * @inode_readlink:
392 * Check the permission to read the symbolic link.
393 * @dentry contains the dentry structure for the file link.
394 * Return 0 if permission is granted.
395 * @inode_follow_link:
396 * Check permission to follow a symbolic link when looking up a pathname.
397 * @dentry contains the dentry structure for the link.
398 * @nd contains the nameidata structure for the parent directory.
399 * Return 0 if permission is granted.
400 * @inode_permission:
401 * Check permission before accessing an inode. This hook is called by the
402 * existing Linux permission function, so a security module can use it to
403 * provide additional checking for existing Linux permission checks.
404 * Notice that this hook is called when a file is opened (as well as many
405 * other operations), whereas the file_security_ops permission hook is
406 * called when the actual read/write operations are performed.
407 * @inode contains the inode structure to check.
408 * @mask contains the permission mask.
409 * @nd contains the nameidata (may be NULL).
410 * Return 0 if permission is granted.
411 * @inode_setattr:
412 * Check permission before setting file attributes. Note that the kernel
413 * call to notify_change is performed from several locations, whenever
414 * file attributes change (such as when a file is truncated, chown/chmod
415 * operations, transferring disk quotas, etc).
416 * @dentry contains the dentry structure for the file.
417 * @attr is the iattr structure containing the new file attributes.
418 * Return 0 if permission is granted.
419 * @inode_getattr:
420 * Check permission before obtaining file attributes.
421 * @mnt is the vfsmount where the dentry was looked up
422 * @dentry contains the dentry structure for the file.
423 * Return 0 if permission is granted.
424 * @inode_delete:
425 * @inode contains the inode structure for deleted inode.
426 * This hook is called when a deleted inode is released (i.e. an inode
427 * with no hard links has its use count drop to zero). A security module
428 * can use this hook to release any persistent label associated with the
429 * inode.
430 * @inode_setxattr:
431 * Check permission before setting the extended attributes
432 * @value identified by @name for @dentry.
433 * Return 0 if permission is granted.
434 * @inode_post_setxattr:
435 * Update inode security field after successful setxattr operation.
436 * @value identified by @name for @dentry.
437 * @inode_getxattr:
438 * Check permission before obtaining the extended attributes
439 * identified by @name for @dentry.
440 * Return 0 if permission is granted.
441 * @inode_listxattr:
442 * Check permission before obtaining the list of extended attribute
443 * names for @dentry.
444 * Return 0 if permission is granted.
445 * @inode_removexattr:
446 * Check permission before removing the extended attribute
447 * identified by @name for @dentry.
448 * Return 0 if permission is granted.
449 * @inode_getsecurity:
David P. Quigley42492592008-02-04 22:29:39 -0800450 * Retrieve a copy of the extended attribute representation of the
451 * security label associated with @name for @inode via @buffer. Note that
452 * @name is the remainder of the attribute name after the security prefix
453 * has been removed. @alloc is used to specify of the call should return a
454 * value via the buffer or just the value length Return size of buffer on
455 * success.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700456 * @inode_setsecurity:
457 * Set the security label associated with @name for @inode from the
458 * extended attribute value @value. @size indicates the size of the
459 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
460 * Note that @name is the remainder of the attribute name after the
461 * security. prefix has been removed.
462 * Return 0 on success.
463 * @inode_listsecurity:
464 * Copy the extended attribute names for the security labels
465 * associated with @inode into @buffer. The maximum size of @buffer
466 * is specified by @buffer_size. @buffer may be NULL to request
467 * the size of the buffer required.
468 * Returns number of bytes used/required on success.
Serge E. Hallynb5376772007-10-16 23:31:36 -0700469 * @inode_need_killpriv:
470 * Called when an inode has been changed.
471 * @dentry is the dentry being changed.
472 * Return <0 on error to abort the inode change operation.
473 * Return 0 if inode_killpriv does not need to be called.
474 * Return >0 if inode_killpriv does need to be called.
475 * @inode_killpriv:
476 * The setuid bit is being removed. Remove similar security labels.
477 * Called with the dentry->d_inode->i_mutex held.
478 * @dentry is the dentry being changed.
479 * Return 0 on success. If error is returned, then the operation
480 * causing setuid bit removal is failed.
Ahmed S. Darwish8a076192008-03-01 21:51:09 +0200481 * @inode_getsecid:
482 * Get the secid associated with the node.
483 * @inode contains a pointer to the inode.
484 * @secid contains a pointer to the location where result will be saved.
485 * In case of failure, @secid will be set to zero.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486 *
487 * Security hooks for file operations
488 *
489 * @file_permission:
490 * Check file permissions before accessing an open file. This hook is
491 * called by various operations that read or write files. A security
492 * module can use this hook to perform additional checking on these
493 * operations, e.g. to revalidate permissions on use to support privilege
494 * bracketing or policy changes. Notice that this hook is used when the
495 * actual read/write operations are performed, whereas the
496 * inode_security_ops hook is called when a file is opened (as well as
497 * many other operations).
498 * Caveat: Although this hook can be used to revalidate permissions for
499 * various system call operations that read or write files, it does not
500 * address the revalidation of permissions for memory-mapped files.
501 * Security modules must handle this separately if they need such
502 * revalidation.
503 * @file contains the file structure being accessed.
504 * @mask contains the requested permissions.
505 * Return 0 if permission is granted.
506 * @file_alloc_security:
507 * Allocate and attach a security structure to the file->f_security field.
508 * The security field is initialized to NULL when the structure is first
509 * created.
510 * @file contains the file structure to secure.
511 * Return 0 if the hook is successful and permission is granted.
512 * @file_free_security:
513 * Deallocate and free any security structures stored in file->f_security.
514 * @file contains the file structure being modified.
515 * @file_ioctl:
516 * @file contains the file structure.
517 * @cmd contains the operation to perform.
518 * @arg contains the operational arguments.
519 * Check permission for an ioctl operation on @file. Note that @arg can
520 * sometimes represents a user space pointer; in other cases, it may be a
521 * simple integer value. When @arg represents a user space pointer, it
522 * should never be used by the security module.
523 * Return 0 if permission is granted.
524 * @file_mmap :
525 * Check permissions for a mmap operation. The @file may be NULL, e.g.
526 * if mapping anonymous memory.
527 * @file contains the file structure for file to map (may be NULL).
528 * @reqprot contains the protection requested by the application.
529 * @prot contains the protection that will be applied by the kernel.
530 * @flags contains the operational flags.
531 * Return 0 if permission is granted.
532 * @file_mprotect:
533 * Check permissions before changing memory access permissions.
534 * @vma contains the memory region to modify.
535 * @reqprot contains the protection requested by the application.
536 * @prot contains the protection that will be applied by the kernel.
537 * Return 0 if permission is granted.
538 * @file_lock:
539 * Check permission before performing file locking operations.
540 * Note: this hook mediates both flock and fcntl style locks.
541 * @file contains the file structure.
542 * @cmd contains the posix-translated lock operation to perform
543 * (e.g. F_RDLCK, F_WRLCK).
544 * Return 0 if permission is granted.
545 * @file_fcntl:
546 * Check permission before allowing the file operation specified by @cmd
547 * from being performed on the file @file. Note that @arg can sometimes
548 * represents a user space pointer; in other cases, it may be a simple
549 * integer value. When @arg represents a user space pointer, it should
550 * never be used by the security module.
551 * @file contains the file structure.
552 * @cmd contains the operation to be performed.
553 * @arg contains the operational arguments.
554 * Return 0 if permission is granted.
555 * @file_set_fowner:
556 * Save owner security information (typically from current->security) in
557 * file->f_security for later use by the send_sigiotask hook.
558 * @file contains the file structure to update.
559 * Return 0 on success.
560 * @file_send_sigiotask:
561 * Check permission for the file owner @fown to send SIGIO or SIGURG to the
562 * process @tsk. Note that this hook is sometimes called from interrupt.
563 * Note that the fown_struct, @fown, is never outside the context of a
564 * struct file, so the file structure (and associated security information)
565 * can always be obtained:
Robert P. J. Dayb385a142007-02-10 01:46:25 -0800566 * container_of(fown, struct file, f_owner)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567 * @tsk contains the structure of task receiving signal.
568 * @fown contains the file owner information.
569 * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
570 * Return 0 if permission is granted.
571 * @file_receive:
572 * This hook allows security modules to control the ability of a process
573 * to receive an open file descriptor via socket IPC.
574 * @file contains the file structure being received.
575 * Return 0 if permission is granted.
576 *
Yuichi Nakamura788e7dd2007-09-14 09:27:07 +0900577 * Security hook for dentry
578 *
579 * @dentry_open
580 * Save open-time permission checking state for later use upon
581 * file_permission, and recheck access if anything has changed
582 * since inode_permission.
583 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700584 * Security hooks for task operations.
585 *
586 * @task_create:
587 * Check permission before creating a child process. See the clone(2)
588 * manual page for definitions of the @clone_flags.
589 * @clone_flags contains the flags indicating what should be shared.
590 * Return 0 if permission is granted.
591 * @task_alloc_security:
592 * @p contains the task_struct for child process.
593 * Allocate and attach a security structure to the p->security field. The
594 * security field is initialized to NULL when the task structure is
595 * allocated.
596 * Return 0 if operation was successful.
597 * @task_free_security:
598 * @p contains the task_struct for process.
599 * Deallocate and clear the p->security field.
600 * @task_setuid:
601 * Check permission before setting one or more of the user identity
602 * attributes of the current process. The @flags parameter indicates
603 * which of the set*uid system calls invoked this hook and how to
604 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
605 * definitions at the beginning of this file for the @flags values and
606 * their meanings.
607 * @id0 contains a uid.
608 * @id1 contains a uid.
609 * @id2 contains a uid.
610 * @flags contains one of the LSM_SETID_* values.
611 * Return 0 if permission is granted.
612 * @task_post_setuid:
613 * Update the module's state after setting one or more of the user
614 * identity attributes of the current process. The @flags parameter
615 * indicates which of the set*uid system calls invoked this hook. If
616 * @flags is LSM_SETID_FS, then @old_ruid is the old fs uid and the other
617 * parameters are not used.
618 * @old_ruid contains the old real uid (or fs uid if LSM_SETID_FS).
619 * @old_euid contains the old effective uid (or -1 if LSM_SETID_FS).
620 * @old_suid contains the old saved uid (or -1 if LSM_SETID_FS).
621 * @flags contains one of the LSM_SETID_* values.
622 * Return 0 on success.
623 * @task_setgid:
624 * Check permission before setting one or more of the group identity
625 * attributes of the current process. The @flags parameter indicates
626 * which of the set*gid system calls invoked this hook and how to
627 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
628 * definitions at the beginning of this file for the @flags values and
629 * their meanings.
630 * @id0 contains a gid.
631 * @id1 contains a gid.
632 * @id2 contains a gid.
633 * @flags contains one of the LSM_SETID_* values.
634 * Return 0 if permission is granted.
635 * @task_setpgid:
636 * Check permission before setting the process group identifier of the
637 * process @p to @pgid.
638 * @p contains the task_struct for process being modified.
639 * @pgid contains the new pgid.
640 * Return 0 if permission is granted.
641 * @task_getpgid:
642 * Check permission before getting the process group identifier of the
643 * process @p.
644 * @p contains the task_struct for the process.
645 * Return 0 if permission is granted.
646 * @task_getsid:
647 * Check permission before getting the session identifier of the process
648 * @p.
649 * @p contains the task_struct for the process.
650 * Return 0 if permission is granted.
David Quigleyf9008e42006-06-30 01:55:46 -0700651 * @task_getsecid:
652 * Retrieve the security identifier of the process @p.
653 * @p contains the task_struct for the process and place is into @secid.
Ahmed S. Darwish8a076192008-03-01 21:51:09 +0200654 * In case of failure, @secid will be set to zero.
655 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700656 * @task_setgroups:
657 * Check permission before setting the supplementary group set of the
658 * current process.
659 * @group_info contains the new group information.
660 * Return 0 if permission is granted.
661 * @task_setnice:
662 * Check permission before setting the nice value of @p to @nice.
663 * @p contains the task_struct of process.
664 * @nice contains the new nice value.
665 * Return 0 if permission is granted.
James Morris03e68062006-06-23 02:03:58 -0700666 * @task_setioprio
667 * Check permission before setting the ioprio value of @p to @ioprio.
668 * @p contains the task_struct of process.
669 * @ioprio contains the new ioprio value
670 * Return 0 if permission is granted.
David Quigleya1836a42006-06-30 01:55:49 -0700671 * @task_getioprio
672 * Check permission before getting the ioprio value of @p.
673 * @p contains the task_struct of process.
674 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700675 * @task_setrlimit:
676 * Check permission before setting the resource limits of the current
677 * process for @resource to @new_rlim. The old resource limit values can
678 * be examined by dereferencing (current->signal->rlim + resource).
679 * @resource contains the resource whose limit is being set.
680 * @new_rlim contains the new limits for @resource.
681 * Return 0 if permission is granted.
682 * @task_setscheduler:
683 * Check permission before setting scheduling policy and/or parameters of
684 * process @p based on @policy and @lp.
685 * @p contains the task_struct for process.
686 * @policy contains the scheduling policy.
687 * @lp contains the scheduling parameters.
688 * Return 0 if permission is granted.
689 * @task_getscheduler:
690 * Check permission before obtaining scheduling information for process
691 * @p.
692 * @p contains the task_struct for process.
693 * Return 0 if permission is granted.
David Quigley35601542006-06-23 02:04:01 -0700694 * @task_movememory
695 * Check permission before moving memory owned by process @p.
696 * @p contains the task_struct for process.
697 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700698 * @task_kill:
699 * Check permission before sending signal @sig to @p. @info can be NULL,
700 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
701 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
702 * from the kernel and should typically be permitted.
703 * SIGIO signals are handled separately by the send_sigiotask hook in
704 * file_security_ops.
705 * @p contains the task_struct for process.
706 * @info contains the signal information.
707 * @sig contains the signal value.
David Quigleyf9008e42006-06-30 01:55:46 -0700708 * @secid contains the sid of the process where the signal originated
Linus Torvalds1da177e2005-04-16 15:20:36 -0700709 * Return 0 if permission is granted.
710 * @task_wait:
711 * Check permission before allowing a process to reap a child process @p
712 * and collect its status information.
713 * @p contains the task_struct for process.
714 * Return 0 if permission is granted.
715 * @task_prctl:
716 * Check permission before performing a process control operation on the
717 * current process.
718 * @option contains the operation.
719 * @arg2 contains a argument.
720 * @arg3 contains a argument.
721 * @arg4 contains a argument.
722 * @arg5 contains a argument.
723 * Return 0 if permission is granted.
724 * @task_reparent_to_init:
725 * Set the security attributes in @p->security for a kernel thread that
726 * is being reparented to the init task.
727 * @p contains the task_struct for the kernel thread.
728 * @task_to_inode:
729 * Set the security attributes for an inode based on an associated task's
730 * security attributes, e.g. for /proc/pid inodes.
731 * @p contains the task_struct for the task.
732 * @inode contains the inode structure for the inode.
733 *
734 * Security hooks for Netlink messaging.
735 *
736 * @netlink_send:
737 * Save security information for a netlink message so that permission
738 * checking can be performed when the message is processed. The security
739 * information can be saved using the eff_cap field of the
740 * netlink_skb_parms structure. Also may be used to provide fine
741 * grained control over message transmission.
742 * @sk associated sock of task sending the message.,
743 * @skb contains the sk_buff structure for the netlink message.
744 * Return 0 if the information was successfully saved and message
745 * is allowed to be transmitted.
746 * @netlink_recv:
747 * Check permission before processing the received netlink message in
748 * @skb.
749 * @skb contains the sk_buff structure for the netlink message.
Darrel Goeddelc7bdb542006-06-27 13:26:11 -0700750 * @cap indicates the capability required
Linus Torvalds1da177e2005-04-16 15:20:36 -0700751 * Return 0 if permission is granted.
752 *
753 * Security hooks for Unix domain networking.
754 *
755 * @unix_stream_connect:
756 * Check permissions before establishing a Unix domain stream connection
757 * between @sock and @other.
758 * @sock contains the socket structure.
759 * @other contains the peer socket structure.
760 * Return 0 if permission is granted.
761 * @unix_may_send:
762 * Check permissions before connecting or sending datagrams from @sock to
763 * @other.
764 * @sock contains the socket structure.
765 * @sock contains the peer socket structure.
766 * Return 0 if permission is granted.
767 *
768 * The @unix_stream_connect and @unix_may_send hooks were necessary because
769 * Linux provides an alternative to the conventional file name space for Unix
770 * domain sockets. Whereas binding and connecting to sockets in the file name
771 * space is mediated by the typical file permissions (and caught by the mknod
772 * and permission hooks in inode_security_ops), binding and connecting to
773 * sockets in the abstract name space is completely unmediated. Sufficient
774 * control of Unix domain sockets in the abstract name space isn't possible
775 * using only the socket layer hooks, since we need to know the actual target
776 * socket, which is not looked up until we are inside the af_unix code.
777 *
778 * Security hooks for socket operations.
779 *
780 * @socket_create:
781 * Check permissions prior to creating a new socket.
782 * @family contains the requested protocol family.
783 * @type contains the requested communications type.
784 * @protocol contains the requested protocol.
785 * @kern set to 1 if a kernel socket.
786 * Return 0 if permission is granted.
787 * @socket_post_create:
788 * This hook allows a module to update or allocate a per-socket security
789 * structure. Note that the security field was not added directly to the
790 * socket structure, but rather, the socket security information is stored
791 * in the associated inode. Typically, the inode alloc_security hook will
792 * allocate and and attach security information to
793 * sock->inode->i_security. This hook may be used to update the
794 * sock->inode->i_security field with additional information that wasn't
795 * available when the inode was allocated.
796 * @sock contains the newly created socket structure.
797 * @family contains the requested protocol family.
798 * @type contains the requested communications type.
799 * @protocol contains the requested protocol.
800 * @kern set to 1 if a kernel socket.
801 * @socket_bind:
802 * Check permission before socket protocol layer bind operation is
803 * performed and the socket @sock is bound to the address specified in the
804 * @address parameter.
805 * @sock contains the socket structure.
806 * @address contains the address to bind to.
807 * @addrlen contains the length of address.
808 * Return 0 if permission is granted.
809 * @socket_connect:
810 * Check permission before socket protocol layer connect operation
811 * attempts to connect socket @sock to a remote address, @address.
812 * @sock contains the socket structure.
813 * @address contains the address of remote endpoint.
814 * @addrlen contains the length of address.
815 * Return 0 if permission is granted.
816 * @socket_listen:
817 * Check permission before socket protocol layer listen operation.
818 * @sock contains the socket structure.
819 * @backlog contains the maximum length for the pending connection queue.
820 * Return 0 if permission is granted.
821 * @socket_accept:
822 * Check permission before accepting a new connection. Note that the new
823 * socket, @newsock, has been created and some information copied to it,
824 * but the accept operation has not actually been performed.
825 * @sock contains the listening socket structure.
826 * @newsock contains the newly created server socket for connection.
827 * Return 0 if permission is granted.
828 * @socket_post_accept:
829 * This hook allows a security module to copy security
830 * information into the newly created socket's inode.
831 * @sock contains the listening socket structure.
832 * @newsock contains the newly created server socket for connection.
833 * @socket_sendmsg:
834 * Check permission before transmitting a message to another socket.
835 * @sock contains the socket structure.
836 * @msg contains the message to be transmitted.
837 * @size contains the size of message.
838 * Return 0 if permission is granted.
839 * @socket_recvmsg:
840 * Check permission before receiving a message from a socket.
841 * @sock contains the socket structure.
842 * @msg contains the message structure.
843 * @size contains the size of message structure.
844 * @flags contains the operational flags.
845 * Return 0 if permission is granted.
846 * @socket_getsockname:
847 * Check permission before the local address (name) of the socket object
848 * @sock is retrieved.
849 * @sock contains the socket structure.
850 * Return 0 if permission is granted.
851 * @socket_getpeername:
852 * Check permission before the remote address (name) of a socket object
853 * @sock is retrieved.
854 * @sock contains the socket structure.
855 * Return 0 if permission is granted.
856 * @socket_getsockopt:
857 * Check permissions before retrieving the options associated with socket
858 * @sock.
859 * @sock contains the socket structure.
860 * @level contains the protocol level to retrieve option from.
861 * @optname contains the name of option to retrieve.
862 * Return 0 if permission is granted.
863 * @socket_setsockopt:
864 * Check permissions before setting the options associated with socket
865 * @sock.
866 * @sock contains the socket structure.
867 * @level contains the protocol level to set options for.
868 * @optname contains the name of the option to set.
869 * Return 0 if permission is granted.
870 * @socket_shutdown:
871 * Checks permission before all or part of a connection on the socket
872 * @sock is shut down.
873 * @sock contains the socket structure.
874 * @how contains the flag indicating how future sends and receives are handled.
875 * Return 0 if permission is granted.
876 * @socket_sock_rcv_skb:
877 * Check permissions on incoming network packets. This hook is distinct
878 * from Netfilter's IP input hooks since it is the first time that the
879 * incoming sk_buff @skb has been associated with a particular socket, @sk.
880 * @sk contains the sock (not socket) associated with the incoming sk_buff.
881 * @skb contains the incoming network data.
Serge Hallyn6da34ba2007-10-20 00:53:30 +0200882 * @socket_getpeersec_stream:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700883 * This hook allows the security module to provide peer socket security
Serge Hallyn6da34ba2007-10-20 00:53:30 +0200884 * state for unix or connected tcp sockets to userspace via getsockopt
885 * SO_GETPEERSEC. For tcp sockets this can be meaningful if the
886 * socket is associated with an ipsec SA.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700887 * @sock is the local socket.
888 * @optval userspace memory where the security state is to be copied.
889 * @optlen userspace int where the module should copy the actual length
890 * of the security state.
891 * @len as input is the maximum length to copy to userspace provided
892 * by the caller.
893 * Return 0 if all is well, otherwise, typical getsockopt return
894 * values.
Serge Hallyn6da34ba2007-10-20 00:53:30 +0200895 * @socket_getpeersec_dgram:
896 * This hook allows the security module to provide peer socket security
897 * state for udp sockets on a per-packet basis to userspace via
898 * getsockopt SO_GETPEERSEC. The application must first have indicated
899 * the IP_PASSSEC option via getsockopt. It can then retrieve the
900 * security state returned by this hook for a packet via the SCM_SECURITY
901 * ancillary message type.
902 * @skb is the skbuff for the packet being queried
903 * @secdata is a pointer to a buffer in which to copy the security data
904 * @seclen is the maximum length for @secdata
905 * Return 0 on success, error on failure.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700906 * @sk_alloc_security:
907 * Allocate and attach a security structure to the sk->sk_security field,
908 * which is used to copy security attributes between local stream sockets.
909 * @sk_free_security:
910 * Deallocate security structure.
Venkat Yekkirala892c1412006-08-04 23:08:56 -0700911 * @sk_clone_security:
912 * Clone/copy security structure.
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -0700913 * @sk_getsecid:
914 * Retrieve the LSM-specific secid for the sock to enable caching of network
Trent Jaegerdf718372005-12-13 23:12:27 -0800915 * authorizations.
Venkat Yekkirala4237c752006-07-24 23:32:50 -0700916 * @sock_graft:
917 * Sets the socket's isec sid to the sock's sid.
918 * @inet_conn_request:
919 * Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
920 * @inet_csk_clone:
921 * Sets the new child socket's sid to the openreq sid.
Venkat Yekkirala6b877692006-11-08 17:04:09 -0600922 * @inet_conn_established:
923 * Sets the connection's peersid to the secmark on skb.
Venkat Yekkirala4237c752006-07-24 23:32:50 -0700924 * @req_classify_flow:
925 * Sets the flow's sid to the openreq sid.
Trent Jaegerdf718372005-12-13 23:12:27 -0800926 *
927 * Security hooks for XFRM operations.
928 *
929 * @xfrm_policy_alloc_security:
Paul Moore03e1ad72008-04-12 19:07:52 -0700930 * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
931 * Database used by the XFRM system.
Trent Jaegerdf718372005-12-13 23:12:27 -0800932 * @sec_ctx contains the security context information being provided by
933 * the user-level policy update program (e.g., setkey).
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -0700934 * Allocate a security structure to the xp->security field; the security
Venkat Yekkiralac1a856c2006-11-08 17:03:44 -0600935 * field is initialized to NULL when the xfrm_policy is allocated.
Trent Jaegerdf718372005-12-13 23:12:27 -0800936 * Return 0 if operation was successful (memory to allocate, legal context)
937 * @xfrm_policy_clone_security:
Paul Moore03e1ad72008-04-12 19:07:52 -0700938 * @old_ctx contains an existing xfrm_sec_ctx.
939 * @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
940 * Allocate a security structure in new_ctxp that contains the
941 * information from the old_ctx structure.
Trent Jaegerdf718372005-12-13 23:12:27 -0800942 * Return 0 if operation was successful (memory to allocate).
943 * @xfrm_policy_free_security:
Paul Moore03e1ad72008-04-12 19:07:52 -0700944 * @ctx contains the xfrm_sec_ctx
Catherine Zhangc8c05a82006-06-08 23:39:49 -0700945 * Deallocate xp->security.
946 * @xfrm_policy_delete_security:
Paul Moore03e1ad72008-04-12 19:07:52 -0700947 * @ctx contains the xfrm_sec_ctx.
Catherine Zhangc8c05a82006-06-08 23:39:49 -0700948 * Authorize deletion of xp->security.
Trent Jaegerdf718372005-12-13 23:12:27 -0800949 * @xfrm_state_alloc_security:
950 * @x contains the xfrm_state being added to the Security Association
951 * Database by the XFRM system.
952 * @sec_ctx contains the security context information being provided by
953 * the user-level SA generation program (e.g., setkey or racoon).
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -0700954 * @secid contains the secid from which to take the mls portion of the context.
955 * Allocate a security structure to the x->security field; the security
956 * field is initialized to NULL when the xfrm_state is allocated. Set the
957 * context to correspond to either sec_ctx or polsec, with the mls portion
958 * taken from secid in the latter case.
Trent Jaegerdf718372005-12-13 23:12:27 -0800959 * Return 0 if operation was successful (memory to allocate, legal context).
960 * @xfrm_state_free_security:
961 * @x contains the xfrm_state.
Catherine Zhangc8c05a82006-06-08 23:39:49 -0700962 * Deallocate x->security.
963 * @xfrm_state_delete_security:
964 * @x contains the xfrm_state.
965 * Authorize deletion of x->security.
Trent Jaegerdf718372005-12-13 23:12:27 -0800966 * @xfrm_policy_lookup:
Paul Moore03e1ad72008-04-12 19:07:52 -0700967 * @ctx contains the xfrm_sec_ctx for which the access control is being
Trent Jaegerdf718372005-12-13 23:12:27 -0800968 * checked.
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -0700969 * @fl_secid contains the flow security label that is used to authorize
Trent Jaegerdf718372005-12-13 23:12:27 -0800970 * access to the policy xp.
971 * @dir contains the direction of the flow (input or output).
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -0700972 * Check permission when a flow selects a xfrm_policy for processing
Trent Jaegerdf718372005-12-13 23:12:27 -0800973 * XFRMs on a packet. The hook is called when selecting either a
974 * per-socket policy or a generic xfrm policy.
Venkat Yekkirala5b368e62006-10-05 15:42:18 -0500975 * Return 0 if permission is granted, -ESRCH otherwise, or -errno
976 * on other errors.
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -0700977 * @xfrm_state_pol_flow_match:
978 * @x contains the state to match.
979 * @xp contains the policy to check for a match.
980 * @fl contains the flow to check for a match.
981 * Return 1 if there is a match.
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -0700982 * @xfrm_decode_session:
983 * @skb points to skb to decode.
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -0700984 * @secid points to the flow key secid to set.
985 * @ckall says if all xfrms used should be checked for same secid.
986 * Return 0 if ckall is zero or all xfrms used have the same secid.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700987 *
David Howells29db9192005-10-30 15:02:44 -0800988 * Security hooks affecting all Key Management operations
989 *
990 * @key_alloc:
991 * Permit allocation of a key and assign security data. Note that key does
992 * not have a serial number assigned at this point.
993 * @key points to the key.
David Howells7e047ef2006-06-26 00:24:50 -0700994 * @flags is the allocation flags
David Howells29db9192005-10-30 15:02:44 -0800995 * Return 0 if permission is granted, -ve error otherwise.
996 * @key_free:
997 * Notification of destruction; free security data.
998 * @key points to the key.
999 * No return value.
1000 * @key_permission:
1001 * See whether a specific operational right is granted to a process on a
1002 * key.
1003 * @key_ref refers to the key (key pointer + possession attribute bit).
1004 * @context points to the process to provide the context against which to
1005 * evaluate the security data on the key.
1006 * @perm describes the combination of permissions required of this key.
1007 * Return 1 if permission granted, 0 if permission denied and -ve it the
1008 * normal permissions model should be effected.
1009 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07001010 * Security hooks affecting all System V IPC operations.
1011 *
1012 * @ipc_permission:
1013 * Check permissions for access to IPC
1014 * @ipcp contains the kernel IPC permission structure
1015 * @flag contains the desired (requested) permission set
1016 * Return 0 if permission is granted.
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02001017 * @ipc_getsecid:
1018 * Get the secid associated with the ipc object.
1019 * @ipcp contains the kernel IPC permission structure.
1020 * @secid contains a pointer to the location where result will be saved.
1021 * In case of failure, @secid will be set to zero.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001022 *
1023 * Security hooks for individual messages held in System V IPC message queues
1024 * @msg_msg_alloc_security:
1025 * Allocate and attach a security structure to the msg->security field.
1026 * The security field is initialized to NULL when the structure is first
1027 * created.
1028 * @msg contains the message structure to be modified.
1029 * Return 0 if operation was successful and permission is granted.
1030 * @msg_msg_free_security:
1031 * Deallocate the security structure for this message.
1032 * @msg contains the message structure to be modified.
1033 *
1034 * Security hooks for System V IPC Message Queues
1035 *
1036 * @msg_queue_alloc_security:
1037 * Allocate and attach a security structure to the
1038 * msq->q_perm.security field. The security field is initialized to
1039 * NULL when the structure is first created.
1040 * @msq contains the message queue structure to be modified.
1041 * Return 0 if operation was successful and permission is granted.
1042 * @msg_queue_free_security:
1043 * Deallocate security structure for this message queue.
1044 * @msq contains the message queue structure to be modified.
1045 * @msg_queue_associate:
1046 * Check permission when a message queue is requested through the
1047 * msgget system call. This hook is only called when returning the
1048 * message queue identifier for an existing message queue, not when a
1049 * new message queue is created.
1050 * @msq contains the message queue to act upon.
1051 * @msqflg contains the operation control flags.
1052 * Return 0 if permission is granted.
1053 * @msg_queue_msgctl:
1054 * Check permission when a message control operation specified by @cmd
1055 * is to be performed on the message queue @msq.
1056 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
1057 * @msq contains the message queue to act upon. May be NULL.
1058 * @cmd contains the operation to be performed.
1059 * Return 0 if permission is granted.
1060 * @msg_queue_msgsnd:
1061 * Check permission before a message, @msg, is enqueued on the message
1062 * queue, @msq.
1063 * @msq contains the message queue to send message to.
1064 * @msg contains the message to be enqueued.
1065 * @msqflg contains operational flags.
1066 * Return 0 if permission is granted.
1067 * @msg_queue_msgrcv:
1068 * Check permission before a message, @msg, is removed from the message
1069 * queue, @msq. The @target task structure contains a pointer to the
1070 * process that will be receiving the message (not equal to the current
1071 * process when inline receives are being performed).
1072 * @msq contains the message queue to retrieve message from.
1073 * @msg contains the message destination.
1074 * @target contains the task structure for recipient process.
1075 * @type contains the type of message requested.
1076 * @mode contains the operational flags.
1077 * Return 0 if permission is granted.
1078 *
1079 * Security hooks for System V Shared Memory Segments
1080 *
1081 * @shm_alloc_security:
1082 * Allocate and attach a security structure to the shp->shm_perm.security
1083 * field. The security field is initialized to NULL when the structure is
1084 * first created.
1085 * @shp contains the shared memory structure to be modified.
1086 * Return 0 if operation was successful and permission is granted.
1087 * @shm_free_security:
1088 * Deallocate the security struct for this memory segment.
1089 * @shp contains the shared memory structure to be modified.
1090 * @shm_associate:
1091 * Check permission when a shared memory region is requested through the
1092 * shmget system call. This hook is only called when returning the shared
1093 * memory region identifier for an existing region, not when a new shared
1094 * memory region is created.
1095 * @shp contains the shared memory structure to be modified.
1096 * @shmflg contains the operation control flags.
1097 * Return 0 if permission is granted.
1098 * @shm_shmctl:
1099 * Check permission when a shared memory control operation specified by
1100 * @cmd is to be performed on the shared memory region @shp.
1101 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1102 * @shp contains shared memory structure to be modified.
1103 * @cmd contains the operation to be performed.
1104 * Return 0 if permission is granted.
1105 * @shm_shmat:
1106 * Check permissions prior to allowing the shmat system call to attach the
1107 * shared memory segment @shp to the data segment of the calling process.
1108 * The attaching address is specified by @shmaddr.
1109 * @shp contains the shared memory structure to be modified.
1110 * @shmaddr contains the address to attach memory region to.
1111 * @shmflg contains the operational flags.
1112 * Return 0 if permission is granted.
1113 *
1114 * Security hooks for System V Semaphores
1115 *
1116 * @sem_alloc_security:
1117 * Allocate and attach a security structure to the sma->sem_perm.security
1118 * field. The security field is initialized to NULL when the structure is
1119 * first created.
1120 * @sma contains the semaphore structure
1121 * Return 0 if operation was successful and permission is granted.
1122 * @sem_free_security:
1123 * deallocate security struct for this semaphore
1124 * @sma contains the semaphore structure.
1125 * @sem_associate:
1126 * Check permission when a semaphore is requested through the semget
1127 * system call. This hook is only called when returning the semaphore
1128 * identifier for an existing semaphore, not when a new one must be
1129 * created.
1130 * @sma contains the semaphore structure.
1131 * @semflg contains the operation control flags.
1132 * Return 0 if permission is granted.
1133 * @sem_semctl:
1134 * Check permission when a semaphore operation specified by @cmd is to be
1135 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
1136 * IPC_INFO or SEM_INFO.
1137 * @sma contains the semaphore structure. May be NULL.
1138 * @cmd contains the operation to be performed.
1139 * Return 0 if permission is granted.
1140 * @sem_semop
1141 * Check permissions before performing operations on members of the
1142 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1143 * may be modified.
1144 * @sma contains the semaphore structure.
1145 * @sops contains the operations to perform.
1146 * @nsops contains the number of operations to perform.
1147 * @alter contains the flag indicating whether changes are to be made.
1148 * Return 0 if permission is granted.
1149 *
1150 * @ptrace:
1151 * Check permission before allowing the @parent process to trace the
1152 * @child process.
1153 * Security modules may also want to perform a process tracing check
1154 * during an execve in the set_security or apply_creds hooks of
1155 * binprm_security_ops if the process is being traced and its security
1156 * attributes would be changed by the execve.
1157 * @parent contains the task_struct structure for parent process.
1158 * @child contains the task_struct structure for child process.
1159 * Return 0 if permission is granted.
1160 * @capget:
1161 * Get the @effective, @inheritable, and @permitted capability sets for
1162 * the @target process. The hook may also perform permission checking to
1163 * determine if the current process is allowed to see the capability sets
1164 * of the @target process.
1165 * @target contains the task_struct structure for target process.
1166 * @effective contains the effective capability set.
1167 * @inheritable contains the inheritable capability set.
1168 * @permitted contains the permitted capability set.
1169 * Return 0 if the capability sets were successfully obtained.
1170 * @capset_check:
1171 * Check permission before setting the @effective, @inheritable, and
1172 * @permitted capability sets for the @target process.
1173 * Caveat: @target is also set to current if a set of processes is
1174 * specified (i.e. all processes other than current and init or a
1175 * particular process group). Hence, the capset_set hook may need to
1176 * revalidate permission to the actual target process.
1177 * @target contains the task_struct structure for target process.
1178 * @effective contains the effective capability set.
1179 * @inheritable contains the inheritable capability set.
1180 * @permitted contains the permitted capability set.
1181 * Return 0 if permission is granted.
1182 * @capset_set:
1183 * Set the @effective, @inheritable, and @permitted capability sets for
1184 * the @target process. Since capset_check cannot always check permission
1185 * to the real @target process, this hook may also perform permission
1186 * checking to determine if the current process is allowed to set the
1187 * capability sets of the @target process. However, this hook has no way
1188 * of returning an error due to the structure of the sys_capset code.
1189 * @target contains the task_struct structure for target process.
1190 * @effective contains the effective capability set.
1191 * @inheritable contains the inheritable capability set.
1192 * @permitted contains the permitted capability set.
Chris Wright12b59892006-03-25 03:07:41 -08001193 * @capable:
1194 * Check whether the @tsk process has the @cap capability.
1195 * @tsk contains the task_struct for the process.
1196 * @cap contains the capability <include/linux/capability.h>.
1197 * Return 0 if the capability is granted for @tsk.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001198 * @acct:
1199 * Check permission before enabling or disabling process accounting. If
1200 * accounting is being enabled, then @file refers to the open file used to
1201 * store accounting records. If accounting is being disabled, then @file
1202 * is NULL.
1203 * @file contains the file structure for the accounting file (may be NULL).
1204 * Return 0 if permission is granted.
1205 * @sysctl:
1206 * Check permission before accessing the @table sysctl variable in the
1207 * manner specified by @op.
1208 * @table contains the ctl_table structure for the sysctl variable.
1209 * @op contains the operation (001 = search, 002 = write, 004 = read).
1210 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001211 * @syslog:
1212 * Check permission before accessing the kernel message ring or changing
1213 * logging to the console.
1214 * See the syslog(2) manual page for an explanation of the @type values.
1215 * @type contains the type of action.
1216 * Return 0 if permission is granted.
1217 * @settime:
1218 * Check permission to change the system time.
1219 * struct timespec and timezone are defined in include/linux/time.h
1220 * @ts contains new time
1221 * @tz contains new timezone
1222 * Return 0 if permission is granted.
1223 * @vm_enough_memory:
1224 * Check permissions for allocating a new virtual mapping.
Alan Cox34b4e4a2007-08-22 14:01:28 -07001225 * @mm contains the mm struct it is being added to.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001226 * @pages contains the number of pages.
1227 * Return 0 if permission is granted.
1228 *
1229 * @register_security:
1230 * allow module stacking.
1231 * @name contains the name of the security module being stacked.
1232 * @ops contains a pointer to the struct security_operations of the module to stack.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001233 *
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07001234 * @secid_to_secctx:
1235 * Convert secid to security context.
1236 * @secid contains the security ID.
1237 * @secdata contains the pointer that stores the converted security context.
David Howells63cb3442008-01-15 23:47:35 +00001238 * @secctx_to_secid:
1239 * Convert security context to secid.
1240 * @secid contains the pointer to the generated security ID.
1241 * @secdata contains the security context.
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07001242 *
1243 * @release_secctx:
1244 * Release the security context.
1245 * @secdata contains the security context.
1246 * @seclen contains the length of the security context.
1247 *
Ahmed S. Darwish03d37d22008-03-01 22:00:05 +02001248 * Security hooks for Audit
1249 *
1250 * @audit_rule_init:
1251 * Allocate and initialize an LSM audit rule structure.
1252 * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
1253 * @op contains the operator the rule uses.
1254 * @rulestr contains the context where the rule will be applied to.
1255 * @lsmrule contains a pointer to receive the result.
1256 * Return 0 if @lsmrule has been successfully set,
1257 * -EINVAL in case of an invalid rule.
1258 *
1259 * @audit_rule_known:
1260 * Specifies whether given @rule contains any fields related to current LSM.
1261 * @rule contains the audit rule of interest.
1262 * Return 1 in case of relation found, 0 otherwise.
1263 *
1264 * @audit_rule_match:
1265 * Determine if given @secid matches a rule previously approved
1266 * by @audit_rule_known.
1267 * @secid contains the security id in question.
1268 * @field contains the field which relates to current LSM.
1269 * @op contains the operator that will be used for matching.
1270 * @rule points to the audit rule that will be checked against.
1271 * @actx points to the audit context associated with the check.
1272 * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
1273 *
1274 * @audit_rule_free:
1275 * Deallocate the LSM audit rule structure previously allocated by
1276 * audit_rule_init.
1277 * @rule contains the allocated rule
1278 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07001279 * This is the main security structure.
1280 */
1281struct security_operations {
Ahmed S. Darwish076c54c2008-03-06 18:09:10 +02001282 char name[SECURITY_NAME_MAX + 1];
1283
Linus Torvalds1da177e2005-04-16 15:20:36 -07001284 int (*ptrace) (struct task_struct * parent, struct task_struct * child);
1285 int (*capget) (struct task_struct * target,
1286 kernel_cap_t * effective,
1287 kernel_cap_t * inheritable, kernel_cap_t * permitted);
1288 int (*capset_check) (struct task_struct * target,
1289 kernel_cap_t * effective,
1290 kernel_cap_t * inheritable,
1291 kernel_cap_t * permitted);
1292 void (*capset_set) (struct task_struct * target,
1293 kernel_cap_t * effective,
1294 kernel_cap_t * inheritable,
1295 kernel_cap_t * permitted);
Chris Wright12b59892006-03-25 03:07:41 -08001296 int (*capable) (struct task_struct * tsk, int cap);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001297 int (*acct) (struct file * file);
1298 int (*sysctl) (struct ctl_table * table, int op);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001299 int (*quotactl) (int cmds, int type, int id, struct super_block * sb);
1300 int (*quota_on) (struct dentry * dentry);
1301 int (*syslog) (int type);
1302 int (*settime) (struct timespec *ts, struct timezone *tz);
Alan Cox34b4e4a2007-08-22 14:01:28 -07001303 int (*vm_enough_memory) (struct mm_struct *mm, long pages);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001304
1305 int (*bprm_alloc_security) (struct linux_binprm * bprm);
1306 void (*bprm_free_security) (struct linux_binprm * bprm);
1307 void (*bprm_apply_creds) (struct linux_binprm * bprm, int unsafe);
1308 void (*bprm_post_apply_creds) (struct linux_binprm * bprm);
1309 int (*bprm_set_security) (struct linux_binprm * bprm);
1310 int (*bprm_check_security) (struct linux_binprm * bprm);
1311 int (*bprm_secureexec) (struct linux_binprm * bprm);
1312
1313 int (*sb_alloc_security) (struct super_block * sb);
1314 void (*sb_free_security) (struct super_block * sb);
Eric Parise0007522008-03-05 10:31:54 -05001315 int (*sb_copy_data)(char *orig, char *copy);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001316 int (*sb_kern_mount) (struct super_block *sb, void *data);
David Howells726c3342006-06-23 02:02:58 -07001317 int (*sb_statfs) (struct dentry *dentry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001318 int (*sb_mount) (char *dev_name, struct nameidata * nd,
1319 char *type, unsigned long flags, void *data);
1320 int (*sb_check_sb) (struct vfsmount * mnt, struct nameidata * nd);
1321 int (*sb_umount) (struct vfsmount * mnt, int flags);
1322 void (*sb_umount_close) (struct vfsmount * mnt);
1323 void (*sb_umount_busy) (struct vfsmount * mnt);
1324 void (*sb_post_remount) (struct vfsmount * mnt,
1325 unsigned long flags, void *data);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001326 void (*sb_post_addmount) (struct vfsmount * mnt,
1327 struct nameidata * mountpoint_nd);
1328 int (*sb_pivotroot) (struct nameidata * old_nd,
1329 struct nameidata * new_nd);
1330 void (*sb_post_pivotroot) (struct nameidata * old_nd,
1331 struct nameidata * new_nd);
Eric Parisc9180a52007-11-30 13:00:35 -05001332 int (*sb_get_mnt_opts) (const struct super_block *sb,
Eric Parise0007522008-03-05 10:31:54 -05001333 struct security_mnt_opts *opts);
1334 int (*sb_set_mnt_opts) (struct super_block *sb,
1335 struct security_mnt_opts *opts);
Eric Parisc9180a52007-11-30 13:00:35 -05001336 void (*sb_clone_mnt_opts) (const struct super_block *oldsb,
1337 struct super_block *newsb);
Eric Parise0007522008-03-05 10:31:54 -05001338 int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001339
1340 int (*inode_alloc_security) (struct inode *inode);
1341 void (*inode_free_security) (struct inode *inode);
Stephen Smalley5e41ff92005-09-09 13:01:35 -07001342 int (*inode_init_security) (struct inode *inode, struct inode *dir,
1343 char **name, void **value, size_t *len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001344 int (*inode_create) (struct inode *dir,
1345 struct dentry *dentry, int mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001346 int (*inode_link) (struct dentry *old_dentry,
1347 struct inode *dir, struct dentry *new_dentry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001348 int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
1349 int (*inode_symlink) (struct inode *dir,
1350 struct dentry *dentry, const char *old_name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001351 int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, int mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001352 int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
1353 int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
1354 int mode, dev_t dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001355 int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
1356 struct inode *new_dir, struct dentry *new_dentry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001357 int (*inode_readlink) (struct dentry *dentry);
1358 int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
1359 int (*inode_permission) (struct inode *inode, int mask, struct nameidata *nd);
1360 int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
1361 int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
1362 void (*inode_delete) (struct inode *inode);
1363 int (*inode_setxattr) (struct dentry *dentry, char *name, void *value,
1364 size_t size, int flags);
1365 void (*inode_post_setxattr) (struct dentry *dentry, char *name, void *value,
1366 size_t size, int flags);
1367 int (*inode_getxattr) (struct dentry *dentry, char *name);
1368 int (*inode_listxattr) (struct dentry *dentry);
1369 int (*inode_removexattr) (struct dentry *dentry, char *name);
Serge E. Hallynb5376772007-10-16 23:31:36 -07001370 int (*inode_need_killpriv) (struct dentry *dentry);
1371 int (*inode_killpriv) (struct dentry *dentry);
David P. Quigley42492592008-02-04 22:29:39 -08001372 int (*inode_getsecurity)(const struct inode *inode, const char *name, void **buffer, bool alloc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001373 int (*inode_setsecurity)(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1374 int (*inode_listsecurity)(struct inode *inode, char *buffer, size_t buffer_size);
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02001375 void (*inode_getsecid)(const struct inode *inode, u32 *secid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001376
1377 int (*file_permission) (struct file * file, int mask);
1378 int (*file_alloc_security) (struct file * file);
1379 void (*file_free_security) (struct file * file);
1380 int (*file_ioctl) (struct file * file, unsigned int cmd,
1381 unsigned long arg);
1382 int (*file_mmap) (struct file * file,
Eric Parised032182007-06-28 15:55:21 -04001383 unsigned long reqprot, unsigned long prot,
1384 unsigned long flags, unsigned long addr,
1385 unsigned long addr_only);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001386 int (*file_mprotect) (struct vm_area_struct * vma,
1387 unsigned long reqprot,
1388 unsigned long prot);
1389 int (*file_lock) (struct file * file, unsigned int cmd);
1390 int (*file_fcntl) (struct file * file, unsigned int cmd,
1391 unsigned long arg);
1392 int (*file_set_fowner) (struct file * file);
1393 int (*file_send_sigiotask) (struct task_struct * tsk,
1394 struct fown_struct * fown, int sig);
1395 int (*file_receive) (struct file * file);
Yuichi Nakamura788e7dd2007-09-14 09:27:07 +09001396 int (*dentry_open) (struct file *file);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001397
1398 int (*task_create) (unsigned long clone_flags);
1399 int (*task_alloc_security) (struct task_struct * p);
1400 void (*task_free_security) (struct task_struct * p);
1401 int (*task_setuid) (uid_t id0, uid_t id1, uid_t id2, int flags);
1402 int (*task_post_setuid) (uid_t old_ruid /* or fsuid */ ,
1403 uid_t old_euid, uid_t old_suid, int flags);
1404 int (*task_setgid) (gid_t id0, gid_t id1, gid_t id2, int flags);
1405 int (*task_setpgid) (struct task_struct * p, pid_t pgid);
1406 int (*task_getpgid) (struct task_struct * p);
1407 int (*task_getsid) (struct task_struct * p);
David Quigleyf9008e42006-06-30 01:55:46 -07001408 void (*task_getsecid) (struct task_struct * p, u32 * secid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001409 int (*task_setgroups) (struct group_info *group_info);
1410 int (*task_setnice) (struct task_struct * p, int nice);
James Morris03e68062006-06-23 02:03:58 -07001411 int (*task_setioprio) (struct task_struct * p, int ioprio);
David Quigleya1836a42006-06-30 01:55:49 -07001412 int (*task_getioprio) (struct task_struct * p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001413 int (*task_setrlimit) (unsigned int resource, struct rlimit * new_rlim);
1414 int (*task_setscheduler) (struct task_struct * p, int policy,
1415 struct sched_param * lp);
1416 int (*task_getscheduler) (struct task_struct * p);
David Quigley35601542006-06-23 02:04:01 -07001417 int (*task_movememory) (struct task_struct * p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001418 int (*task_kill) (struct task_struct * p,
David Quigleyf9008e42006-06-30 01:55:46 -07001419 struct siginfo * info, int sig, u32 secid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001420 int (*task_wait) (struct task_struct * p);
1421 int (*task_prctl) (int option, unsigned long arg2,
1422 unsigned long arg3, unsigned long arg4,
1423 unsigned long arg5);
1424 void (*task_reparent_to_init) (struct task_struct * p);
1425 void (*task_to_inode)(struct task_struct *p, struct inode *inode);
1426
1427 int (*ipc_permission) (struct kern_ipc_perm * ipcp, short flag);
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02001428 void (*ipc_getsecid) (struct kern_ipc_perm *ipcp, u32 *secid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001429
1430 int (*msg_msg_alloc_security) (struct msg_msg * msg);
1431 void (*msg_msg_free_security) (struct msg_msg * msg);
1432
1433 int (*msg_queue_alloc_security) (struct msg_queue * msq);
1434 void (*msg_queue_free_security) (struct msg_queue * msq);
1435 int (*msg_queue_associate) (struct msg_queue * msq, int msqflg);
1436 int (*msg_queue_msgctl) (struct msg_queue * msq, int cmd);
1437 int (*msg_queue_msgsnd) (struct msg_queue * msq,
1438 struct msg_msg * msg, int msqflg);
1439 int (*msg_queue_msgrcv) (struct msg_queue * msq,
1440 struct msg_msg * msg,
1441 struct task_struct * target,
1442 long type, int mode);
1443
1444 int (*shm_alloc_security) (struct shmid_kernel * shp);
1445 void (*shm_free_security) (struct shmid_kernel * shp);
1446 int (*shm_associate) (struct shmid_kernel * shp, int shmflg);
1447 int (*shm_shmctl) (struct shmid_kernel * shp, int cmd);
1448 int (*shm_shmat) (struct shmid_kernel * shp,
1449 char __user *shmaddr, int shmflg);
1450
1451 int (*sem_alloc_security) (struct sem_array * sma);
1452 void (*sem_free_security) (struct sem_array * sma);
1453 int (*sem_associate) (struct sem_array * sma, int semflg);
1454 int (*sem_semctl) (struct sem_array * sma, int cmd);
1455 int (*sem_semop) (struct sem_array * sma,
1456 struct sembuf * sops, unsigned nsops, int alter);
1457
1458 int (*netlink_send) (struct sock * sk, struct sk_buff * skb);
Darrel Goeddelc7bdb542006-06-27 13:26:11 -07001459 int (*netlink_recv) (struct sk_buff * skb, int cap);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001460
1461 /* allow module stacking */
1462 int (*register_security) (const char *name,
1463 struct security_operations *ops);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001464
1465 void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1466
Al Viro04ff9702007-03-12 16:17:58 +00001467 int (*getprocattr)(struct task_struct *p, char *name, char **value);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001468 int (*setprocattr)(struct task_struct *p, char *name, void *value, size_t size);
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07001469 int (*secid_to_secctx)(u32 secid, char **secdata, u32 *seclen);
David Howells63cb3442008-01-15 23:47:35 +00001470 int (*secctx_to_secid)(char *secdata, u32 seclen, u32 *secid);
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07001471 void (*release_secctx)(char *secdata, u32 seclen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001472
1473#ifdef CONFIG_SECURITY_NETWORK
1474 int (*unix_stream_connect) (struct socket * sock,
1475 struct socket * other, struct sock * newsk);
1476 int (*unix_may_send) (struct socket * sock, struct socket * other);
1477
1478 int (*socket_create) (int family, int type, int protocol, int kern);
Venkat Yekkirala7420ed22006-08-04 23:17:57 -07001479 int (*socket_post_create) (struct socket * sock, int family,
1480 int type, int protocol, int kern);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001481 int (*socket_bind) (struct socket * sock,
1482 struct sockaddr * address, int addrlen);
1483 int (*socket_connect) (struct socket * sock,
1484 struct sockaddr * address, int addrlen);
1485 int (*socket_listen) (struct socket * sock, int backlog);
1486 int (*socket_accept) (struct socket * sock, struct socket * newsock);
1487 void (*socket_post_accept) (struct socket * sock,
1488 struct socket * newsock);
1489 int (*socket_sendmsg) (struct socket * sock,
1490 struct msghdr * msg, int size);
1491 int (*socket_recvmsg) (struct socket * sock,
1492 struct msghdr * msg, int size, int flags);
1493 int (*socket_getsockname) (struct socket * sock);
1494 int (*socket_getpeername) (struct socket * sock);
1495 int (*socket_getsockopt) (struct socket * sock, int level, int optname);
1496 int (*socket_setsockopt) (struct socket * sock, int level, int optname);
1497 int (*socket_shutdown) (struct socket * sock, int how);
1498 int (*socket_sock_rcv_skb) (struct sock * sk, struct sk_buff * skb);
Catherine Zhang2c7946a2006-03-20 22:41:23 -08001499 int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07001500 int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
Al Viro7d877f32005-10-21 03:20:43 -04001501 int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001502 void (*sk_free_security) (struct sock *sk);
Venkat Yekkirala892c1412006-08-04 23:08:56 -07001503 void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07001504 void (*sk_getsecid) (struct sock *sk, u32 *secid);
Venkat Yekkirala4237c752006-07-24 23:32:50 -07001505 void (*sock_graft)(struct sock* sk, struct socket *parent);
1506 int (*inet_conn_request)(struct sock *sk, struct sk_buff *skb,
1507 struct request_sock *req);
1508 void (*inet_csk_clone)(struct sock *newsk, const struct request_sock *req);
Venkat Yekkirala6b877692006-11-08 17:04:09 -06001509 void (*inet_conn_established)(struct sock *sk, struct sk_buff *skb);
Venkat Yekkirala4237c752006-07-24 23:32:50 -07001510 void (*req_classify_flow)(const struct request_sock *req, struct flowi *fl);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001511#endif /* CONFIG_SECURITY_NETWORK */
David Howells29db9192005-10-30 15:02:44 -08001512
Trent Jaegerdf718372005-12-13 23:12:27 -08001513#ifdef CONFIG_SECURITY_NETWORK_XFRM
Paul Moore03e1ad72008-04-12 19:07:52 -07001514 int (*xfrm_policy_alloc_security) (struct xfrm_sec_ctx **ctxp,
Venkat Yekkiralac1a856c2006-11-08 17:03:44 -06001515 struct xfrm_user_sec_ctx *sec_ctx);
Paul Moore03e1ad72008-04-12 19:07:52 -07001516 int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
1517 void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
1518 int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001519 int (*xfrm_state_alloc_security) (struct xfrm_state *x,
Venkat Yekkiralac1a856c2006-11-08 17:03:44 -06001520 struct xfrm_user_sec_ctx *sec_ctx,
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001521 u32 secid);
Trent Jaegerdf718372005-12-13 23:12:27 -08001522 void (*xfrm_state_free_security) (struct xfrm_state *x);
Catherine Zhangc8c05a82006-06-08 23:39:49 -07001523 int (*xfrm_state_delete_security) (struct xfrm_state *x);
Paul Moore03e1ad72008-04-12 19:07:52 -07001524 int (*xfrm_policy_lookup)(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001525 int (*xfrm_state_pol_flow_match)(struct xfrm_state *x,
1526 struct xfrm_policy *xp, struct flowi *fl);
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07001527 int (*xfrm_decode_session)(struct sk_buff *skb, u32 *secid, int ckall);
Trent Jaegerdf718372005-12-13 23:12:27 -08001528#endif /* CONFIG_SECURITY_NETWORK_XFRM */
1529
David Howells29db9192005-10-30 15:02:44 -08001530 /* key management security hooks */
1531#ifdef CONFIG_KEYS
David Howells7e047ef2006-06-26 00:24:50 -07001532 int (*key_alloc)(struct key *key, struct task_struct *tsk, unsigned long flags);
David Howells29db9192005-10-30 15:02:44 -08001533 void (*key_free)(struct key *key);
1534 int (*key_permission)(key_ref_t key_ref,
1535 struct task_struct *context,
1536 key_perm_t perm);
1537
1538#endif /* CONFIG_KEYS */
1539
Ahmed S. Darwish03d37d22008-03-01 22:00:05 +02001540#ifdef CONFIG_AUDIT
1541 int (*audit_rule_init)(u32 field, u32 op, char *rulestr, void **lsmrule);
1542 int (*audit_rule_known)(struct audit_krule *krule);
1543 int (*audit_rule_match)(u32 secid, u32 field, u32 op, void *lsmrule,
1544 struct audit_context *actx);
1545 void (*audit_rule_free)(void *lsmrule);
1546#endif /* CONFIG_AUDIT */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001547};
1548
Linus Torvalds1da177e2005-04-16 15:20:36 -07001549/* prototypes */
1550extern int security_init (void);
Ahmed S. Darwish076c54c2008-03-06 18:09:10 +02001551extern int security_module_enable(struct security_operations *ops);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001552extern int register_security (struct security_operations *ops);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001553extern int mod_reg_security (const char *name, struct security_operations *ops);
Greg KHb67dbf92005-07-07 14:37:53 -07001554extern struct dentry *securityfs_create_file(const char *name, mode_t mode,
1555 struct dentry *parent, void *data,
Arjan van de Ven54047322007-02-12 00:55:28 -08001556 const struct file_operations *fops);
Greg KHb67dbf92005-07-07 14:37:53 -07001557extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
1558extern void securityfs_remove(struct dentry *dentry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001559
1560
James Morris20510f22007-10-16 23:31:32 -07001561/* Security operations */
1562int security_ptrace(struct task_struct *parent, struct task_struct *child);
1563int security_capget(struct task_struct *target,
1564 kernel_cap_t *effective,
1565 kernel_cap_t *inheritable,
1566 kernel_cap_t *permitted);
1567int security_capset_check(struct task_struct *target,
1568 kernel_cap_t *effective,
1569 kernel_cap_t *inheritable,
1570 kernel_cap_t *permitted);
1571void security_capset_set(struct task_struct *target,
1572 kernel_cap_t *effective,
1573 kernel_cap_t *inheritable,
1574 kernel_cap_t *permitted);
1575int security_capable(struct task_struct *tsk, int cap);
1576int security_acct(struct file *file);
1577int security_sysctl(struct ctl_table *table, int op);
1578int security_quotactl(int cmds, int type, int id, struct super_block *sb);
1579int security_quota_on(struct dentry *dentry);
1580int security_syslog(int type);
1581int security_settime(struct timespec *ts, struct timezone *tz);
1582int security_vm_enough_memory(long pages);
1583int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
1584int security_bprm_alloc(struct linux_binprm *bprm);
1585void security_bprm_free(struct linux_binprm *bprm);
1586void security_bprm_apply_creds(struct linux_binprm *bprm, int unsafe);
1587void security_bprm_post_apply_creds(struct linux_binprm *bprm);
1588int security_bprm_set(struct linux_binprm *bprm);
1589int security_bprm_check(struct linux_binprm *bprm);
1590int security_bprm_secureexec(struct linux_binprm *bprm);
1591int security_sb_alloc(struct super_block *sb);
1592void security_sb_free(struct super_block *sb);
Eric Parise0007522008-03-05 10:31:54 -05001593int security_sb_copy_data(char *orig, char *copy);
James Morris20510f22007-10-16 23:31:32 -07001594int security_sb_kern_mount(struct super_block *sb, void *data);
1595int security_sb_statfs(struct dentry *dentry);
1596int security_sb_mount(char *dev_name, struct nameidata *nd,
1597 char *type, unsigned long flags, void *data);
1598int security_sb_check_sb(struct vfsmount *mnt, struct nameidata *nd);
1599int security_sb_umount(struct vfsmount *mnt, int flags);
1600void security_sb_umount_close(struct vfsmount *mnt);
1601void security_sb_umount_busy(struct vfsmount *mnt);
1602void security_sb_post_remount(struct vfsmount *mnt, unsigned long flags, void *data);
James Morris20510f22007-10-16 23:31:32 -07001603void security_sb_post_addmount(struct vfsmount *mnt, struct nameidata *mountpoint_nd);
1604int security_sb_pivotroot(struct nameidata *old_nd, struct nameidata *new_nd);
1605void security_sb_post_pivotroot(struct nameidata *old_nd, struct nameidata *new_nd);
Eric Parise0007522008-03-05 10:31:54 -05001606int security_sb_get_mnt_opts(const struct super_block *sb,
1607 struct security_mnt_opts *opts);
1608int security_sb_set_mnt_opts(struct super_block *sb, struct security_mnt_opts *opts);
Eric Parisc9180a52007-11-30 13:00:35 -05001609void security_sb_clone_mnt_opts(const struct super_block *oldsb,
1610 struct super_block *newsb);
Eric Parise0007522008-03-05 10:31:54 -05001611int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
Eric Parisc9180a52007-11-30 13:00:35 -05001612
James Morris20510f22007-10-16 23:31:32 -07001613int security_inode_alloc(struct inode *inode);
1614void security_inode_free(struct inode *inode);
1615int security_inode_init_security(struct inode *inode, struct inode *dir,
1616 char **name, void **value, size_t *len);
1617int security_inode_create(struct inode *dir, struct dentry *dentry, int mode);
1618int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1619 struct dentry *new_dentry);
1620int security_inode_unlink(struct inode *dir, struct dentry *dentry);
1621int security_inode_symlink(struct inode *dir, struct dentry *dentry,
1622 const char *old_name);
1623int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode);
1624int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
1625int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev);
1626int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
1627 struct inode *new_dir, struct dentry *new_dentry);
1628int security_inode_readlink(struct dentry *dentry);
1629int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
1630int security_inode_permission(struct inode *inode, int mask, struct nameidata *nd);
1631int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
1632int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
1633void security_inode_delete(struct inode *inode);
1634int security_inode_setxattr(struct dentry *dentry, char *name,
1635 void *value, size_t size, int flags);
1636void security_inode_post_setxattr(struct dentry *dentry, char *name,
1637 void *value, size_t size, int flags);
1638int security_inode_getxattr(struct dentry *dentry, char *name);
1639int security_inode_listxattr(struct dentry *dentry);
1640int security_inode_removexattr(struct dentry *dentry, char *name);
Serge E. Hallynb5376772007-10-16 23:31:36 -07001641int security_inode_need_killpriv(struct dentry *dentry);
1642int security_inode_killpriv(struct dentry *dentry);
David P. Quigley42492592008-02-04 22:29:39 -08001643int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
James Morris20510f22007-10-16 23:31:32 -07001644int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1645int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02001646void security_inode_getsecid(const struct inode *inode, u32 *secid);
James Morris20510f22007-10-16 23:31:32 -07001647int security_file_permission(struct file *file, int mask);
1648int security_file_alloc(struct file *file);
1649void security_file_free(struct file *file);
1650int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
1651int security_file_mmap(struct file *file, unsigned long reqprot,
1652 unsigned long prot, unsigned long flags,
1653 unsigned long addr, unsigned long addr_only);
1654int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1655 unsigned long prot);
1656int security_file_lock(struct file *file, unsigned int cmd);
1657int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
1658int security_file_set_fowner(struct file *file);
1659int security_file_send_sigiotask(struct task_struct *tsk,
1660 struct fown_struct *fown, int sig);
1661int security_file_receive(struct file *file);
1662int security_dentry_open(struct file *file);
1663int security_task_create(unsigned long clone_flags);
1664int security_task_alloc(struct task_struct *p);
1665void security_task_free(struct task_struct *p);
1666int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags);
1667int security_task_post_setuid(uid_t old_ruid, uid_t old_euid,
1668 uid_t old_suid, int flags);
1669int security_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags);
1670int security_task_setpgid(struct task_struct *p, pid_t pgid);
1671int security_task_getpgid(struct task_struct *p);
1672int security_task_getsid(struct task_struct *p);
1673void security_task_getsecid(struct task_struct *p, u32 *secid);
1674int security_task_setgroups(struct group_info *group_info);
1675int security_task_setnice(struct task_struct *p, int nice);
1676int security_task_setioprio(struct task_struct *p, int ioprio);
1677int security_task_getioprio(struct task_struct *p);
1678int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim);
1679int security_task_setscheduler(struct task_struct *p,
1680 int policy, struct sched_param *lp);
1681int security_task_getscheduler(struct task_struct *p);
1682int security_task_movememory(struct task_struct *p);
1683int security_task_kill(struct task_struct *p, struct siginfo *info,
1684 int sig, u32 secid);
1685int security_task_wait(struct task_struct *p);
1686int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1687 unsigned long arg4, unsigned long arg5);
1688void security_task_reparent_to_init(struct task_struct *p);
1689void security_task_to_inode(struct task_struct *p, struct inode *inode);
1690int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02001691void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
James Morris20510f22007-10-16 23:31:32 -07001692int security_msg_msg_alloc(struct msg_msg *msg);
1693void security_msg_msg_free(struct msg_msg *msg);
1694int security_msg_queue_alloc(struct msg_queue *msq);
1695void security_msg_queue_free(struct msg_queue *msq);
1696int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
1697int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
1698int security_msg_queue_msgsnd(struct msg_queue *msq,
1699 struct msg_msg *msg, int msqflg);
1700int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1701 struct task_struct *target, long type, int mode);
1702int security_shm_alloc(struct shmid_kernel *shp);
1703void security_shm_free(struct shmid_kernel *shp);
1704int security_shm_associate(struct shmid_kernel *shp, int shmflg);
1705int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
1706int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
1707int security_sem_alloc(struct sem_array *sma);
1708void security_sem_free(struct sem_array *sma);
1709int security_sem_associate(struct sem_array *sma, int semflg);
1710int security_sem_semctl(struct sem_array *sma, int cmd);
1711int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1712 unsigned nsops, int alter);
1713void security_d_instantiate (struct dentry *dentry, struct inode *inode);
1714int security_getprocattr(struct task_struct *p, char *name, char **value);
1715int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
1716int security_netlink_send(struct sock *sk, struct sk_buff *skb);
1717int security_netlink_recv(struct sk_buff *skb, int cap);
1718int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
David Howells63cb3442008-01-15 23:47:35 +00001719int security_secctx_to_secid(char *secdata, u32 seclen, u32 *secid);
James Morris20510f22007-10-16 23:31:32 -07001720void security_release_secctx(char *secdata, u32 seclen);
1721
Linus Torvalds1da177e2005-04-16 15:20:36 -07001722#else /* CONFIG_SECURITY */
Eric Parise0007522008-03-05 10:31:54 -05001723struct security_mnt_opts {
1724};
1725
1726static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
1727{
1728}
1729
1730static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
1731{
1732}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001733
1734/*
1735 * This is the default capabilities functionality. Most of these functions
1736 * are just stubbed out, but a few must call the proper capable code.
1737 */
1738
1739static inline int security_init(void)
1740{
1741 return 0;
1742}
1743
1744static inline int security_ptrace (struct task_struct *parent, struct task_struct * child)
1745{
1746 return cap_ptrace (parent, child);
1747}
1748
1749static inline int security_capget (struct task_struct *target,
1750 kernel_cap_t *effective,
1751 kernel_cap_t *inheritable,
1752 kernel_cap_t *permitted)
1753{
1754 return cap_capget (target, effective, inheritable, permitted);
1755}
1756
1757static inline int security_capset_check (struct task_struct *target,
1758 kernel_cap_t *effective,
1759 kernel_cap_t *inheritable,
1760 kernel_cap_t *permitted)
1761{
1762 return cap_capset_check (target, effective, inheritable, permitted);
1763}
1764
1765static inline void security_capset_set (struct task_struct *target,
1766 kernel_cap_t *effective,
1767 kernel_cap_t *inheritable,
1768 kernel_cap_t *permitted)
1769{
1770 cap_capset_set (target, effective, inheritable, permitted);
1771}
1772
Chris Wright12b59892006-03-25 03:07:41 -08001773static inline int security_capable(struct task_struct *tsk, int cap)
1774{
1775 return cap_capable(tsk, cap);
1776}
1777
Linus Torvalds1da177e2005-04-16 15:20:36 -07001778static inline int security_acct (struct file *file)
1779{
1780 return 0;
1781}
1782
1783static inline int security_sysctl(struct ctl_table *table, int op)
1784{
1785 return 0;
1786}
1787
1788static inline int security_quotactl (int cmds, int type, int id,
1789 struct super_block * sb)
1790{
1791 return 0;
1792}
1793
1794static inline int security_quota_on (struct dentry * dentry)
1795{
1796 return 0;
1797}
1798
1799static inline int security_syslog(int type)
1800{
1801 return cap_syslog(type);
1802}
1803
1804static inline int security_settime(struct timespec *ts, struct timezone *tz)
1805{
1806 return cap_settime(ts, tz);
1807}
1808
1809static inline int security_vm_enough_memory(long pages)
1810{
Alan Cox34b4e4a2007-08-22 14:01:28 -07001811 return cap_vm_enough_memory(current->mm, pages);
1812}
1813
1814static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
1815{
1816 return cap_vm_enough_memory(mm, pages);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001817}
1818
1819static inline int security_bprm_alloc (struct linux_binprm *bprm)
1820{
1821 return 0;
1822}
1823
1824static inline void security_bprm_free (struct linux_binprm *bprm)
1825{ }
1826
1827static inline void security_bprm_apply_creds (struct linux_binprm *bprm, int unsafe)
1828{
1829 cap_bprm_apply_creds (bprm, unsafe);
1830}
1831
1832static inline void security_bprm_post_apply_creds (struct linux_binprm *bprm)
1833{
1834 return;
1835}
1836
1837static inline int security_bprm_set (struct linux_binprm *bprm)
1838{
1839 return cap_bprm_set_security (bprm);
1840}
1841
1842static inline int security_bprm_check (struct linux_binprm *bprm)
1843{
1844 return 0;
1845}
1846
1847static inline int security_bprm_secureexec (struct linux_binprm *bprm)
1848{
1849 return cap_bprm_secureexec(bprm);
1850}
1851
1852static inline int security_sb_alloc (struct super_block *sb)
1853{
1854 return 0;
1855}
1856
1857static inline void security_sb_free (struct super_block *sb)
1858{ }
1859
Eric Parise0007522008-03-05 10:31:54 -05001860static inline int security_sb_copy_data (char *orig, char *copy)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001861{
1862 return 0;
1863}
1864
1865static inline int security_sb_kern_mount (struct super_block *sb, void *data)
1866{
1867 return 0;
1868}
1869
David Howells726c3342006-06-23 02:02:58 -07001870static inline int security_sb_statfs (struct dentry *dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001871{
1872 return 0;
1873}
1874
1875static inline int security_sb_mount (char *dev_name, struct nameidata *nd,
1876 char *type, unsigned long flags,
1877 void *data)
1878{
1879 return 0;
1880}
1881
1882static inline int security_sb_check_sb (struct vfsmount *mnt,
1883 struct nameidata *nd)
1884{
1885 return 0;
1886}
1887
1888static inline int security_sb_umount (struct vfsmount *mnt, int flags)
1889{
1890 return 0;
1891}
1892
1893static inline void security_sb_umount_close (struct vfsmount *mnt)
1894{ }
1895
1896static inline void security_sb_umount_busy (struct vfsmount *mnt)
1897{ }
1898
1899static inline void security_sb_post_remount (struct vfsmount *mnt,
1900 unsigned long flags, void *data)
1901{ }
1902
Linus Torvalds1da177e2005-04-16 15:20:36 -07001903static inline void security_sb_post_addmount (struct vfsmount *mnt,
1904 struct nameidata *mountpoint_nd)
1905{ }
1906
1907static inline int security_sb_pivotroot (struct nameidata *old_nd,
1908 struct nameidata *new_nd)
1909{
1910 return 0;
1911}
1912
1913static inline void security_sb_post_pivotroot (struct nameidata *old_nd,
1914 struct nameidata *new_nd)
1915{ }
Eric Parise0007522008-03-05 10:31:54 -05001916static inline int security_sb_get_mnt_opts(const struct super_block *sb,
1917 struct security_mnt_opts *opts)
1918{
1919 security_init_mnt_opts(opts);
1920 return 0;
1921}
1922
1923static inline int security_sb_set_mnt_opts(struct super_block *sb,
1924 struct security_mnt_opts *opts)
1925{
1926 return 0;
1927}
1928
1929static inline void security_sb_clone_mnt_opts(const struct super_block *oldsb,
1930 struct super_block *newsb)
1931{ }
1932
1933static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
1934{
1935 return 0;
1936}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001937
1938static inline int security_inode_alloc (struct inode *inode)
1939{
1940 return 0;
1941}
1942
1943static inline void security_inode_free (struct inode *inode)
1944{ }
Stephen Smalley5e41ff92005-09-09 13:01:35 -07001945
1946static inline int security_inode_init_security (struct inode *inode,
1947 struct inode *dir,
1948 char **name,
1949 void **value,
1950 size_t *len)
1951{
1952 return -EOPNOTSUPP;
1953}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001954
1955static inline int security_inode_create (struct inode *dir,
1956 struct dentry *dentry,
1957 int mode)
1958{
1959 return 0;
1960}
1961
Linus Torvalds1da177e2005-04-16 15:20:36 -07001962static inline int security_inode_link (struct dentry *old_dentry,
1963 struct inode *dir,
1964 struct dentry *new_dentry)
1965{
1966 return 0;
1967}
1968
Linus Torvalds1da177e2005-04-16 15:20:36 -07001969static inline int security_inode_unlink (struct inode *dir,
1970 struct dentry *dentry)
1971{
1972 return 0;
1973}
1974
1975static inline int security_inode_symlink (struct inode *dir,
1976 struct dentry *dentry,
1977 const char *old_name)
1978{
1979 return 0;
1980}
1981
Linus Torvalds1da177e2005-04-16 15:20:36 -07001982static inline int security_inode_mkdir (struct inode *dir,
1983 struct dentry *dentry,
1984 int mode)
1985{
1986 return 0;
1987}
1988
Linus Torvalds1da177e2005-04-16 15:20:36 -07001989static inline int security_inode_rmdir (struct inode *dir,
1990 struct dentry *dentry)
1991{
1992 return 0;
1993}
1994
1995static inline int security_inode_mknod (struct inode *dir,
1996 struct dentry *dentry,
1997 int mode, dev_t dev)
1998{
1999 return 0;
2000}
2001
Linus Torvalds1da177e2005-04-16 15:20:36 -07002002static inline int security_inode_rename (struct inode *old_dir,
2003 struct dentry *old_dentry,
2004 struct inode *new_dir,
2005 struct dentry *new_dentry)
2006{
2007 return 0;
2008}
2009
Linus Torvalds1da177e2005-04-16 15:20:36 -07002010static inline int security_inode_readlink (struct dentry *dentry)
2011{
2012 return 0;
2013}
2014
2015static inline int security_inode_follow_link (struct dentry *dentry,
2016 struct nameidata *nd)
2017{
2018 return 0;
2019}
2020
2021static inline int security_inode_permission (struct inode *inode, int mask,
2022 struct nameidata *nd)
2023{
2024 return 0;
2025}
2026
2027static inline int security_inode_setattr (struct dentry *dentry,
2028 struct iattr *attr)
2029{
2030 return 0;
2031}
2032
2033static inline int security_inode_getattr (struct vfsmount *mnt,
2034 struct dentry *dentry)
2035{
2036 return 0;
2037}
2038
2039static inline void security_inode_delete (struct inode *inode)
2040{ }
2041
2042static inline int security_inode_setxattr (struct dentry *dentry, char *name,
2043 void *value, size_t size, int flags)
2044{
2045 return cap_inode_setxattr(dentry, name, value, size, flags);
2046}
2047
2048static inline void security_inode_post_setxattr (struct dentry *dentry, char *name,
2049 void *value, size_t size, int flags)
2050{ }
2051
2052static inline int security_inode_getxattr (struct dentry *dentry, char *name)
2053{
2054 return 0;
2055}
2056
2057static inline int security_inode_listxattr (struct dentry *dentry)
2058{
2059 return 0;
2060}
2061
2062static inline int security_inode_removexattr (struct dentry *dentry, char *name)
2063{
2064 return cap_inode_removexattr(dentry, name);
2065}
2066
Serge E. Hallynb5376772007-10-16 23:31:36 -07002067static inline int security_inode_need_killpriv(struct dentry *dentry)
2068{
2069 return cap_inode_need_killpriv(dentry);
2070}
2071
2072static inline int security_inode_killpriv(struct dentry *dentry)
2073{
2074 return cap_inode_killpriv(dentry);
2075}
2076
David P. Quigley42492592008-02-04 22:29:39 -08002077static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002078{
2079 return -EOPNOTSUPP;
2080}
2081
2082static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
2083{
2084 return -EOPNOTSUPP;
2085}
2086
2087static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
2088{
2089 return 0;
2090}
2091
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02002092static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
2093{
2094 *secid = 0;
2095}
2096
Linus Torvalds1da177e2005-04-16 15:20:36 -07002097static inline int security_file_permission (struct file *file, int mask)
2098{
2099 return 0;
2100}
2101
2102static inline int security_file_alloc (struct file *file)
2103{
2104 return 0;
2105}
2106
2107static inline void security_file_free (struct file *file)
2108{ }
2109
2110static inline int security_file_ioctl (struct file *file, unsigned int cmd,
2111 unsigned long arg)
2112{
2113 return 0;
2114}
2115
2116static inline int security_file_mmap (struct file *file, unsigned long reqprot,
2117 unsigned long prot,
Eric Parised032182007-06-28 15:55:21 -04002118 unsigned long flags,
2119 unsigned long addr,
2120 unsigned long addr_only)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002121{
2122 return 0;
2123}
2124
2125static inline int security_file_mprotect (struct vm_area_struct *vma,
2126 unsigned long reqprot,
2127 unsigned long prot)
2128{
2129 return 0;
2130}
2131
2132static inline int security_file_lock (struct file *file, unsigned int cmd)
2133{
2134 return 0;
2135}
2136
2137static inline int security_file_fcntl (struct file *file, unsigned int cmd,
2138 unsigned long arg)
2139{
2140 return 0;
2141}
2142
2143static inline int security_file_set_fowner (struct file *file)
2144{
2145 return 0;
2146}
2147
2148static inline int security_file_send_sigiotask (struct task_struct *tsk,
2149 struct fown_struct *fown,
2150 int sig)
2151{
2152 return 0;
2153}
2154
2155static inline int security_file_receive (struct file *file)
2156{
2157 return 0;
2158}
2159
Yuichi Nakamura788e7dd2007-09-14 09:27:07 +09002160static inline int security_dentry_open (struct file *file)
2161{
2162 return 0;
2163}
2164
Linus Torvalds1da177e2005-04-16 15:20:36 -07002165static inline int security_task_create (unsigned long clone_flags)
2166{
2167 return 0;
2168}
2169
2170static inline int security_task_alloc (struct task_struct *p)
2171{
2172 return 0;
2173}
2174
2175static inline void security_task_free (struct task_struct *p)
2176{ }
2177
2178static inline int security_task_setuid (uid_t id0, uid_t id1, uid_t id2,
2179 int flags)
2180{
2181 return 0;
2182}
2183
2184static inline int security_task_post_setuid (uid_t old_ruid, uid_t old_euid,
2185 uid_t old_suid, int flags)
2186{
2187 return cap_task_post_setuid (old_ruid, old_euid, old_suid, flags);
2188}
2189
2190static inline int security_task_setgid (gid_t id0, gid_t id1, gid_t id2,
2191 int flags)
2192{
2193 return 0;
2194}
2195
2196static inline int security_task_setpgid (struct task_struct *p, pid_t pgid)
2197{
2198 return 0;
2199}
2200
2201static inline int security_task_getpgid (struct task_struct *p)
2202{
2203 return 0;
2204}
2205
2206static inline int security_task_getsid (struct task_struct *p)
2207{
2208 return 0;
2209}
2210
David Quigleyf9008e42006-06-30 01:55:46 -07002211static inline void security_task_getsecid (struct task_struct *p, u32 *secid)
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02002212{
2213 *secid = 0;
2214}
David Quigleyf9008e42006-06-30 01:55:46 -07002215
Linus Torvalds1da177e2005-04-16 15:20:36 -07002216static inline int security_task_setgroups (struct group_info *group_info)
2217{
2218 return 0;
2219}
2220
2221static inline int security_task_setnice (struct task_struct *p, int nice)
2222{
Serge E. Hallynb5376772007-10-16 23:31:36 -07002223 return cap_task_setnice(p, nice);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002224}
2225
James Morris03e68062006-06-23 02:03:58 -07002226static inline int security_task_setioprio (struct task_struct *p, int ioprio)
2227{
Serge E. Hallynb5376772007-10-16 23:31:36 -07002228 return cap_task_setioprio(p, ioprio);
James Morris03e68062006-06-23 02:03:58 -07002229}
2230
David Quigleya1836a42006-06-30 01:55:49 -07002231static inline int security_task_getioprio (struct task_struct *p)
2232{
2233 return 0;
2234}
2235
Linus Torvalds1da177e2005-04-16 15:20:36 -07002236static inline int security_task_setrlimit (unsigned int resource,
2237 struct rlimit *new_rlim)
2238{
2239 return 0;
2240}
2241
2242static inline int security_task_setscheduler (struct task_struct *p,
2243 int policy,
2244 struct sched_param *lp)
2245{
Serge E. Hallynb5376772007-10-16 23:31:36 -07002246 return cap_task_setscheduler(p, policy, lp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002247}
2248
2249static inline int security_task_getscheduler (struct task_struct *p)
2250{
2251 return 0;
2252}
2253
David Quigley35601542006-06-23 02:04:01 -07002254static inline int security_task_movememory (struct task_struct *p)
2255{
2256 return 0;
2257}
2258
Linus Torvalds1da177e2005-04-16 15:20:36 -07002259static inline int security_task_kill (struct task_struct *p,
David Quigleyf9008e42006-06-30 01:55:46 -07002260 struct siginfo *info, int sig,
2261 u32 secid)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002262{
Serge Hallynaedb60a2008-02-29 15:14:57 +00002263 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002264}
2265
2266static inline int security_task_wait (struct task_struct *p)
2267{
2268 return 0;
2269}
2270
2271static inline int security_task_prctl (int option, unsigned long arg2,
2272 unsigned long arg3,
2273 unsigned long arg4,
2274 unsigned long arg5)
2275{
2276 return 0;
2277}
2278
2279static inline void security_task_reparent_to_init (struct task_struct *p)
2280{
2281 cap_task_reparent_to_init (p);
2282}
2283
2284static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
2285{ }
2286
2287static inline int security_ipc_permission (struct kern_ipc_perm *ipcp,
2288 short flag)
2289{
2290 return 0;
2291}
2292
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02002293static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
2294{
2295 *secid = 0;
2296}
2297
Linus Torvalds1da177e2005-04-16 15:20:36 -07002298static inline int security_msg_msg_alloc (struct msg_msg * msg)
2299{
2300 return 0;
2301}
2302
2303static inline void security_msg_msg_free (struct msg_msg * msg)
2304{ }
2305
2306static inline int security_msg_queue_alloc (struct msg_queue *msq)
2307{
2308 return 0;
2309}
2310
2311static inline void security_msg_queue_free (struct msg_queue *msq)
2312{ }
2313
2314static inline int security_msg_queue_associate (struct msg_queue * msq,
2315 int msqflg)
2316{
2317 return 0;
2318}
2319
2320static inline int security_msg_queue_msgctl (struct msg_queue * msq, int cmd)
2321{
2322 return 0;
2323}
2324
2325static inline int security_msg_queue_msgsnd (struct msg_queue * msq,
2326 struct msg_msg * msg, int msqflg)
2327{
2328 return 0;
2329}
2330
2331static inline int security_msg_queue_msgrcv (struct msg_queue * msq,
2332 struct msg_msg * msg,
2333 struct task_struct * target,
2334 long type, int mode)
2335{
2336 return 0;
2337}
2338
2339static inline int security_shm_alloc (struct shmid_kernel *shp)
2340{
2341 return 0;
2342}
2343
2344static inline void security_shm_free (struct shmid_kernel *shp)
2345{ }
2346
2347static inline int security_shm_associate (struct shmid_kernel * shp,
2348 int shmflg)
2349{
2350 return 0;
2351}
2352
2353static inline int security_shm_shmctl (struct shmid_kernel * shp, int cmd)
2354{
2355 return 0;
2356}
2357
2358static inline int security_shm_shmat (struct shmid_kernel * shp,
2359 char __user *shmaddr, int shmflg)
2360{
2361 return 0;
2362}
2363
2364static inline int security_sem_alloc (struct sem_array *sma)
2365{
2366 return 0;
2367}
2368
2369static inline void security_sem_free (struct sem_array *sma)
2370{ }
2371
2372static inline int security_sem_associate (struct sem_array * sma, int semflg)
2373{
2374 return 0;
2375}
2376
2377static inline int security_sem_semctl (struct sem_array * sma, int cmd)
2378{
2379 return 0;
2380}
2381
2382static inline int security_sem_semop (struct sem_array * sma,
2383 struct sembuf * sops, unsigned nsops,
2384 int alter)
2385{
2386 return 0;
2387}
2388
2389static inline void security_d_instantiate (struct dentry *dentry, struct inode *inode)
2390{ }
2391
Al Viro04ff9702007-03-12 16:17:58 +00002392static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002393{
2394 return -EINVAL;
2395}
2396
2397static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2398{
2399 return -EINVAL;
2400}
2401
2402static inline int security_netlink_send (struct sock *sk, struct sk_buff *skb)
2403{
2404 return cap_netlink_send (sk, skb);
2405}
2406
Darrel Goeddelc7bdb542006-06-27 13:26:11 -07002407static inline int security_netlink_recv (struct sk_buff *skb, int cap)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002408{
Darrel Goeddelc7bdb542006-06-27 13:26:11 -07002409 return cap_netlink_recv (skb, cap);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002410}
2411
Randy Dunlaped5a9272006-02-01 03:05:00 -08002412static inline struct dentry *securityfs_create_dir(const char *name,
2413 struct dentry *parent)
2414{
2415 return ERR_PTR(-ENODEV);
2416}
2417
2418static inline struct dentry *securityfs_create_file(const char *name,
2419 mode_t mode,
2420 struct dentry *parent,
2421 void *data,
Jan Engelhardt1996a102008-01-23 00:02:58 +01002422 const struct file_operations *fops)
Randy Dunlaped5a9272006-02-01 03:05:00 -08002423{
2424 return ERR_PTR(-ENODEV);
2425}
2426
2427static inline void securityfs_remove(struct dentry *dentry)
2428{
2429}
2430
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07002431static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2432{
2433 return -EOPNOTSUPP;
2434}
2435
David Howells63cb3442008-01-15 23:47:35 +00002436static inline int security_secctx_to_secid(char *secdata,
2437 u32 seclen,
2438 u32 *secid)
2439{
2440 return -EOPNOTSUPP;
2441}
2442
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07002443static inline void security_release_secctx(char *secdata, u32 seclen)
2444{
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07002445}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002446#endif /* CONFIG_SECURITY */
2447
2448#ifdef CONFIG_SECURITY_NETWORK
Linus Torvalds1da177e2005-04-16 15:20:36 -07002449
James Morris20510f22007-10-16 23:31:32 -07002450int security_unix_stream_connect(struct socket *sock, struct socket *other,
2451 struct sock *newsk);
2452int security_unix_may_send(struct socket *sock, struct socket *other);
2453int security_socket_create(int family, int type, int protocol, int kern);
2454int security_socket_post_create(struct socket *sock, int family,
2455 int type, int protocol, int kern);
2456int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
2457int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
2458int security_socket_listen(struct socket *sock, int backlog);
2459int security_socket_accept(struct socket *sock, struct socket *newsock);
2460void security_socket_post_accept(struct socket *sock, struct socket *newsock);
2461int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
2462int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2463 int size, int flags);
2464int security_socket_getsockname(struct socket *sock);
2465int security_socket_getpeername(struct socket *sock);
2466int security_socket_getsockopt(struct socket *sock, int level, int optname);
2467int security_socket_setsockopt(struct socket *sock, int level, int optname);
2468int security_socket_shutdown(struct socket *sock, int how);
2469int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
2470int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2471 int __user *optlen, unsigned len);
2472int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
2473int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
2474void security_sk_free(struct sock *sk);
2475void security_sk_clone(const struct sock *sk, struct sock *newsk);
2476void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
2477void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
2478void security_sock_graft(struct sock*sk, struct socket *parent);
2479int security_inet_conn_request(struct sock *sk,
2480 struct sk_buff *skb, struct request_sock *req);
2481void security_inet_csk_clone(struct sock *newsk,
2482 const struct request_sock *req);
2483void security_inet_conn_established(struct sock *sk,
2484 struct sk_buff *skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002485
Linus Torvalds1da177e2005-04-16 15:20:36 -07002486#else /* CONFIG_SECURITY_NETWORK */
2487static inline int security_unix_stream_connect(struct socket * sock,
Venkat Yekkirala6b877692006-11-08 17:04:09 -06002488 struct socket * other,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002489 struct sock * newsk)
2490{
2491 return 0;
2492}
2493
2494static inline int security_unix_may_send(struct socket * sock,
2495 struct socket * other)
2496{
2497 return 0;
2498}
2499
2500static inline int security_socket_create (int family, int type,
2501 int protocol, int kern)
2502{
2503 return 0;
2504}
2505
Venkat Yekkirala7420ed22006-08-04 23:17:57 -07002506static inline int security_socket_post_create(struct socket * sock,
2507 int family,
2508 int type,
2509 int protocol, int kern)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002510{
Venkat Yekkirala7420ed22006-08-04 23:17:57 -07002511 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002512}
2513
2514static inline int security_socket_bind(struct socket * sock,
2515 struct sockaddr * address,
2516 int addrlen)
2517{
2518 return 0;
2519}
2520
2521static inline int security_socket_connect(struct socket * sock,
2522 struct sockaddr * address,
2523 int addrlen)
2524{
2525 return 0;
2526}
2527
2528static inline int security_socket_listen(struct socket * sock, int backlog)
2529{
2530 return 0;
2531}
2532
2533static inline int security_socket_accept(struct socket * sock,
2534 struct socket * newsock)
2535{
2536 return 0;
2537}
2538
2539static inline void security_socket_post_accept(struct socket * sock,
2540 struct socket * newsock)
2541{
2542}
2543
2544static inline int security_socket_sendmsg(struct socket * sock,
2545 struct msghdr * msg, int size)
2546{
2547 return 0;
2548}
2549
2550static inline int security_socket_recvmsg(struct socket * sock,
2551 struct msghdr * msg, int size,
2552 int flags)
2553{
2554 return 0;
2555}
2556
2557static inline int security_socket_getsockname(struct socket * sock)
2558{
2559 return 0;
2560}
2561
2562static inline int security_socket_getpeername(struct socket * sock)
2563{
2564 return 0;
2565}
2566
2567static inline int security_socket_getsockopt(struct socket * sock,
2568 int level, int optname)
2569{
2570 return 0;
2571}
2572
2573static inline int security_socket_setsockopt(struct socket * sock,
2574 int level, int optname)
2575{
2576 return 0;
2577}
2578
2579static inline int security_socket_shutdown(struct socket * sock, int how)
2580{
2581 return 0;
2582}
2583static inline int security_sock_rcv_skb (struct sock * sk,
2584 struct sk_buff * skb)
2585{
2586 return 0;
2587}
2588
Catherine Zhang2c7946a2006-03-20 22:41:23 -08002589static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2590 int __user *optlen, unsigned len)
2591{
2592 return -ENOPROTOOPT;
2593}
2594
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07002595static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002596{
2597 return -ENOPROTOOPT;
2598}
2599
Al Virodd0fc662005-10-07 07:46:04 +01002600static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002601{
2602 return 0;
2603}
2604
2605static inline void security_sk_free(struct sock *sk)
2606{
2607}
Trent Jaegerdf718372005-12-13 23:12:27 -08002608
Venkat Yekkirala892c1412006-08-04 23:08:56 -07002609static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
2610{
2611}
2612
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07002613static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
Trent Jaegerdf718372005-12-13 23:12:27 -08002614{
Trent Jaegerdf718372005-12-13 23:12:27 -08002615}
Venkat Yekkirala4237c752006-07-24 23:32:50 -07002616
2617static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2618{
2619}
2620
2621static inline void security_sock_graft(struct sock* sk, struct socket *parent)
2622{
2623}
2624
2625static inline int security_inet_conn_request(struct sock *sk,
2626 struct sk_buff *skb, struct request_sock *req)
2627{
2628 return 0;
2629}
2630
2631static inline void security_inet_csk_clone(struct sock *newsk,
2632 const struct request_sock *req)
2633{
2634}
Venkat Yekkirala6b877692006-11-08 17:04:09 -06002635
2636static inline void security_inet_conn_established(struct sock *sk,
2637 struct sk_buff *skb)
2638{
2639}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002640#endif /* CONFIG_SECURITY_NETWORK */
2641
Trent Jaegerdf718372005-12-13 23:12:27 -08002642#ifdef CONFIG_SECURITY_NETWORK_XFRM
Venkat Yekkiralacb969f02006-07-24 23:32:20 -07002643
Paul Moore03e1ad72008-04-12 19:07:52 -07002644int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx);
2645int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
2646void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
2647int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
James Morris20510f22007-10-16 23:31:32 -07002648int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
2649int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2650 struct xfrm_sec_ctx *polsec, u32 secid);
2651int security_xfrm_state_delete(struct xfrm_state *x);
2652void security_xfrm_state_free(struct xfrm_state *x);
Paul Moore03e1ad72008-04-12 19:07:52 -07002653int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
James Morris20510f22007-10-16 23:31:32 -07002654int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2655 struct xfrm_policy *xp, struct flowi *fl);
2656int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
2657void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
Trent Jaegerdf718372005-12-13 23:12:27 -08002658
Trent Jaegerdf718372005-12-13 23:12:27 -08002659#else /* CONFIG_SECURITY_NETWORK_XFRM */
James Morris20510f22007-10-16 23:31:32 -07002660
Paul Moore03e1ad72008-04-12 19:07:52 -07002661static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
Trent Jaegerdf718372005-12-13 23:12:27 -08002662{
2663 return 0;
2664}
2665
Paul Moore03e1ad72008-04-12 19:07:52 -07002666static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
Trent Jaegerdf718372005-12-13 23:12:27 -08002667{
2668 return 0;
2669}
2670
Paul Moore03e1ad72008-04-12 19:07:52 -07002671static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
Trent Jaegerdf718372005-12-13 23:12:27 -08002672{
2673}
2674
Paul Moore03e1ad72008-04-12 19:07:52 -07002675static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
Catherine Zhangc8c05a82006-06-08 23:39:49 -07002676{
2677 return 0;
2678}
2679
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07002680static inline int security_xfrm_state_alloc(struct xfrm_state *x,
2681 struct xfrm_user_sec_ctx *sec_ctx)
2682{
2683 return 0;
2684}
2685
2686static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2687 struct xfrm_sec_ctx *polsec, u32 secid)
Trent Jaegerdf718372005-12-13 23:12:27 -08002688{
2689 return 0;
2690}
2691
2692static inline void security_xfrm_state_free(struct xfrm_state *x)
2693{
2694}
2695
David S. Miller6f68dc32006-06-08 23:58:52 -07002696static inline int security_xfrm_state_delete(struct xfrm_state *x)
Catherine Zhangc8c05a82006-06-08 23:39:49 -07002697{
2698 return 0;
2699}
2700
Paul Moore03e1ad72008-04-12 19:07:52 -07002701static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
Trent Jaegerdf718372005-12-13 23:12:27 -08002702{
2703 return 0;
2704}
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07002705
2706static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2707 struct xfrm_policy *xp, struct flowi *fl)
2708{
2709 return 1;
2710}
2711
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07002712static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07002713{
2714 return 0;
2715}
2716
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07002717static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2718{
2719}
2720
Trent Jaegerdf718372005-12-13 23:12:27 -08002721#endif /* CONFIG_SECURITY_NETWORK_XFRM */
2722
David Howells29db9192005-10-30 15:02:44 -08002723#ifdef CONFIG_KEYS
2724#ifdef CONFIG_SECURITY
David Howells29db9192005-10-30 15:02:44 -08002725
James Morris20510f22007-10-16 23:31:32 -07002726int security_key_alloc(struct key *key, struct task_struct *tsk, unsigned long flags);
2727void security_key_free(struct key *key);
2728int security_key_permission(key_ref_t key_ref,
2729 struct task_struct *context, key_perm_t perm);
David Howells29db9192005-10-30 15:02:44 -08002730
2731#else
2732
Michael LeMayd7200242006-06-22 14:47:17 -07002733static inline int security_key_alloc(struct key *key,
David Howells7e047ef2006-06-26 00:24:50 -07002734 struct task_struct *tsk,
2735 unsigned long flags)
David Howells29db9192005-10-30 15:02:44 -08002736{
2737 return 0;
2738}
2739
2740static inline void security_key_free(struct key *key)
2741{
2742}
2743
2744static inline int security_key_permission(key_ref_t key_ref,
2745 struct task_struct *context,
2746 key_perm_t perm)
2747{
2748 return 0;
2749}
2750
2751#endif
2752#endif /* CONFIG_KEYS */
2753
Ahmed S. Darwish03d37d22008-03-01 22:00:05 +02002754#ifdef CONFIG_AUDIT
2755#ifdef CONFIG_SECURITY
2756int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
2757int security_audit_rule_known(struct audit_krule *krule);
2758int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
2759 struct audit_context *actx);
2760void security_audit_rule_free(void *lsmrule);
2761
2762#else
2763
2764static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
2765 void **lsmrule)
2766{
2767 return 0;
2768}
2769
2770static inline int security_audit_rule_known(struct audit_krule *krule)
2771{
2772 return 0;
2773}
2774
2775static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
2776 void *lsmrule, struct audit_context *actx)
2777{
2778 return 0;
2779}
2780
2781static inline void security_audit_rule_free(void *lsmrule)
2782{ }
2783
2784#endif /* CONFIG_SECURITY */
2785#endif /* CONFIG_AUDIT */
2786
Linus Torvalds1da177e2005-04-16 15:20:36 -07002787#endif /* ! __LINUX_SECURITY_H */
2788