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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>
Pekka Enberg3d544f42009-03-24 11:59:23 +020035#include <linux/gfp.h>
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -070036#include <net/flow.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070037
Ahmed S. Darwish076c54c2008-03-06 18:09:10 +020038/* Maximum number of letters for an LSM name string */
39#define SECURITY_NAME_MAX 10
40
Eric Paris06112162008-11-11 22:02:50 +110041/* If capable should audit the security request */
42#define SECURITY_CAP_NOAUDIT 0
43#define SECURITY_CAP_AUDIT 1
44
Linus Torvalds1da177e2005-04-16 15:20:36 -070045struct ctl_table;
Ahmed S. Darwish03d37d22008-03-01 22:00:05 +020046struct audit_krule;
Linus Torvalds1da177e2005-04-16 15:20:36 -070047
48/*
49 * These functions are in security/capability.c and are used
50 * as the default capabilities functions
51 */
David Howells3699c532009-01-06 22:27:01 +000052extern int cap_capable(struct task_struct *tsk, const struct cred *cred,
53 int cap, int audit);
Eric Paris7b41b172008-04-23 14:10:25 -040054extern int cap_settime(struct timespec *ts, struct timezone *tz);
David Howells5cd9c582008-08-14 11:37:28 +010055extern int cap_ptrace_may_access(struct task_struct *child, unsigned int mode);
56extern int cap_ptrace_traceme(struct task_struct *parent);
Eric Paris7b41b172008-04-23 14:10:25 -040057extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
David Howellsd84f4f92008-11-14 10:39:23 +110058extern int cap_capset(struct cred *new, const struct cred *old,
59 const kernel_cap_t *effective,
60 const kernel_cap_t *inheritable,
61 const kernel_cap_t *permitted);
David Howellsa6f76f22008-11-14 10:39:24 +110062extern int cap_bprm_set_creds(struct linux_binprm *bprm);
Linus Torvalds1da177e2005-04-16 15:20:36 -070063extern int cap_bprm_secureexec(struct linux_binprm *bprm);
David Howells8f0cfa52008-04-29 00:59:41 -070064extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
65 const void *value, size_t size, int flags);
66extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
Serge E. Hallynb5376772007-10-16 23:31:36 -070067extern int cap_inode_need_killpriv(struct dentry *dentry);
68extern int cap_inode_killpriv(struct dentry *dentry);
David Howellsd84f4f92008-11-14 10:39:23 +110069extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
Andrew G. Morgan3898b1b2008-04-28 02:13:40 -070070extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
David Howellsd84f4f92008-11-14 10:39:23 +110071 unsigned long arg4, unsigned long arg5);
Eric Paris7b41b172008-04-23 14:10:25 -040072extern int cap_task_setscheduler(struct task_struct *p, int policy, struct sched_param *lp);
73extern int cap_task_setioprio(struct task_struct *p, int ioprio);
74extern int cap_task_setnice(struct task_struct *p, int nice);
75extern int cap_syslog(int type);
James Morris20510f22007-10-16 23:31:32 -070076extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
Linus Torvalds1da177e2005-04-16 15:20:36 -070077
78struct msghdr;
79struct sk_buff;
80struct sock;
81struct sockaddr;
82struct socket;
Trent Jaegerdf718372005-12-13 23:12:27 -080083struct flowi;
84struct dst_entry;
85struct xfrm_selector;
86struct xfrm_policy;
87struct xfrm_state;
88struct xfrm_user_sec_ctx;
Eric Paris2069f452008-07-04 09:47:13 +100089struct seq_file;
Linus Torvalds1da177e2005-04-16 15:20:36 -070090
91extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
Darrel Goeddelc7bdb542006-06-27 13:26:11 -070092extern int cap_netlink_recv(struct sk_buff *skb, int cap);
Linus Torvalds1da177e2005-04-16 15:20:36 -070093
Eric Parised032182007-06-28 15:55:21 -040094extern unsigned long mmap_min_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -070095/*
96 * Values used in the task_security_ops calls
97 */
98/* setuid or setgid, id0 == uid or gid */
99#define LSM_SETID_ID 1
100
101/* setreuid or setregid, id0 == real, id1 == eff */
102#define LSM_SETID_RE 2
103
104/* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
105#define LSM_SETID_RES 4
106
107/* setfsuid or setfsgid, id0 == fsuid or fsgid */
108#define LSM_SETID_FS 8
109
110/* forward declares to avoid warnings */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111struct sched_param;
Venkat Yekkirala4237c752006-07-24 23:32:50 -0700112struct request_sock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113
David Howellsa6f76f22008-11-14 10:39:24 +1100114/* bprm->unsafe reasons */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115#define LSM_UNSAFE_SHARE 1
116#define LSM_UNSAFE_PTRACE 2
117#define LSM_UNSAFE_PTRACE_CAP 4
118
119#ifdef CONFIG_SECURITY
120
Eric Parise0007522008-03-05 10:31:54 -0500121struct security_mnt_opts {
122 char **mnt_opts;
123 int *mnt_opts_flags;
124 int num_mnt_opts;
125};
126
127static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
128{
129 opts->mnt_opts = NULL;
130 opts->mnt_opts_flags = NULL;
131 opts->num_mnt_opts = 0;
132}
133
134static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
135{
136 int i;
137 if (opts->mnt_opts)
Eric Paris7b41b172008-04-23 14:10:25 -0400138 for (i = 0; i < opts->num_mnt_opts; i++)
Eric Parise0007522008-03-05 10:31:54 -0500139 kfree(opts->mnt_opts[i]);
140 kfree(opts->mnt_opts);
141 opts->mnt_opts = NULL;
142 kfree(opts->mnt_opts_flags);
143 opts->mnt_opts_flags = NULL;
144 opts->num_mnt_opts = 0;
145}
146
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147/**
148 * struct security_operations - main security structure
149 *
Ahmed S. Darwish076c54c2008-03-06 18:09:10 +0200150 * Security module identifier.
151 *
152 * @name:
153 * A string that acts as a unique identifeir for the LSM with max number
154 * of characters = SECURITY_NAME_MAX.
155 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156 * Security hooks for program execution operations.
157 *
David Howellsa6f76f22008-11-14 10:39:24 +1100158 * @bprm_set_creds:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159 * Save security information in the bprm->security field, typically based
160 * on information about the bprm->file, for later use by the apply_creds
161 * hook. This hook may also optionally check permissions (e.g. for
162 * transitions between security domains).
163 * This hook may be called multiple times during a single execve, e.g. for
164 * interpreters. The hook can tell whether it has already been called by
165 * checking to see if @bprm->security is non-NULL. If so, then the hook
166 * may decide either to retain the security information saved earlier or
167 * to replace it.
168 * @bprm contains the linux_binprm structure.
169 * Return 0 if the hook is successful and permission is granted.
170 * @bprm_check_security:
David Howellsa6f76f22008-11-14 10:39:24 +1100171 * This hook mediates the point when a search for a binary handler will
172 * begin. It allows a check the @bprm->security value which is set in the
173 * preceding set_creds call. The primary difference from set_creds is
174 * that the argv list and envp list are reliably available in @bprm. This
175 * hook may be called multiple times during a single execve; and in each
176 * pass set_creds is called first.
Eric Paris7b41b172008-04-23 14:10:25 -0400177 * @bprm contains the linux_binprm structure.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178 * Return 0 if the hook is successful and permission is granted.
David Howellsa6f76f22008-11-14 10:39:24 +1100179 * @bprm_committing_creds:
180 * Prepare to install the new security attributes of a process being
181 * transformed by an execve operation, based on the old credentials
182 * pointed to by @current->cred and the information set in @bprm->cred by
183 * the bprm_set_creds hook. @bprm points to the linux_binprm structure.
184 * This hook is a good place to perform state changes on the process such
185 * as closing open file descriptors to which access will no longer be
186 * granted when the attributes are changed. This is called immediately
187 * before commit_creds().
188 * @bprm_committed_creds:
189 * Tidy up after the installation of the new security attributes of a
190 * process being transformed by an execve operation. The new credentials
191 * have, by this point, been set to @current->cred. @bprm points to the
192 * linux_binprm structure. This hook is a good place to perform state
193 * changes on the process such as clearing out non-inheritable signal
194 * state. This is called immediately after commit_creds().
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195 * @bprm_secureexec:
Eric Paris7b41b172008-04-23 14:10:25 -0400196 * Return a boolean value (0 or 1) indicating whether a "secure exec"
197 * is required. The flag is passed in the auxiliary table
198 * on the initial stack to the ELF interpreter to indicate whether libc
199 * should enable secure mode.
200 * @bprm contains the linux_binprm structure.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201 *
202 * Security hooks for filesystem operations.
203 *
204 * @sb_alloc_security:
205 * Allocate and attach a security structure to the sb->s_security field.
206 * The s_security field is initialized to NULL when the structure is
207 * allocated.
208 * @sb contains the super_block structure to be modified.
209 * Return 0 if operation was successful.
210 * @sb_free_security:
211 * Deallocate and clear the sb->s_security field.
212 * @sb contains the super_block structure to be modified.
213 * @sb_statfs:
David Howells726c3342006-06-23 02:02:58 -0700214 * Check permission before obtaining filesystem statistics for the @mnt
215 * mountpoint.
216 * @dentry is a handle on the superblock for the filesystem.
Eric Paris7b41b172008-04-23 14:10:25 -0400217 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218 * @sb_mount:
219 * Check permission before an object specified by @dev_name is mounted on
220 * the mount point named by @nd. For an ordinary mount, @dev_name
221 * identifies a device if the file system type requires a device. For a
222 * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a
223 * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
224 * pathname of the object being mounted.
225 * @dev_name contains the name for object being mounted.
Al Virob5266eb2008-03-22 17:48:24 -0400226 * @path contains the path for mount point object.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700227 * @type contains the filesystem type.
228 * @flags contains the mount flags.
229 * @data contains the filesystem-specific data.
230 * Return 0 if permission is granted.
231 * @sb_copy_data:
232 * Allow mount option data to be copied prior to parsing by the filesystem,
233 * so that the security module can extract security-specific mount
234 * options cleanly (a filesystem may modify the data e.g. with strsep()).
235 * This also allows the original mount data to be stripped of security-
236 * specific options to avoid having to make filesystems aware of them.
237 * @type the type of filesystem being mounted.
238 * @orig the original mount data copied from userspace.
239 * @copy copied data which will be passed to the security module.
240 * Returns 0 if the copy was successful.
241 * @sb_check_sb:
242 * Check permission before the device with superblock @mnt->sb is mounted
243 * on the mount point named by @nd.
244 * @mnt contains the vfsmount for device being mounted.
Al Virob5266eb2008-03-22 17:48:24 -0400245 * @path contains the path for the mount point.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246 * Return 0 if permission is granted.
247 * @sb_umount:
248 * Check permission before the @mnt file system is unmounted.
249 * @mnt contains the mounted file system.
250 * @flags contains the unmount flags, e.g. MNT_FORCE.
251 * Return 0 if permission is granted.
252 * @sb_umount_close:
253 * Close any files in the @mnt mounted filesystem that are held open by
254 * the security module. This hook is called during an umount operation
255 * prior to checking whether the filesystem is still busy.
256 * @mnt contains the mounted filesystem.
257 * @sb_umount_busy:
258 * Handle a failed umount of the @mnt mounted filesystem, e.g. re-opening
259 * any files that were closed by umount_close. This hook is called during
260 * an umount operation if the umount fails after a call to the
261 * umount_close hook.
262 * @mnt contains the mounted filesystem.
263 * @sb_post_remount:
264 * Update the security module's state when a filesystem is remounted.
265 * This hook is only called if the remount was successful.
266 * @mnt contains the mounted file system.
267 * @flags contains the new filesystem flags.
268 * @data contains the filesystem-specific data.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 * @sb_post_addmount:
270 * Update the security module's state when a filesystem is mounted.
271 * This hook is called any time a mount is successfully grafetd to
272 * the tree.
273 * @mnt contains the mounted filesystem.
Al Virob5266eb2008-03-22 17:48:24 -0400274 * @mountpoint contains the path for the mount point.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275 * @sb_pivotroot:
276 * Check permission before pivoting the root filesystem.
Al Virob5266eb2008-03-22 17:48:24 -0400277 * @old_path contains the path for the new location of the current root (put_old).
Eric Paris7b41b172008-04-23 14:10:25 -0400278 * @new_path contains the path for the new root (new_root).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279 * Return 0 if permission is granted.
280 * @sb_post_pivotroot:
281 * Update module state after a successful pivot.
Al Virob5266eb2008-03-22 17:48:24 -0400282 * @old_path contains the path for the old root.
Eric Paris7b41b172008-04-23 14:10:25 -0400283 * @new_path contains the path for the new root.
Eric Parisc9180a52007-11-30 13:00:35 -0500284 * @sb_set_mnt_opts:
285 * Set the security relevant mount options used for a superblock
286 * @sb the superblock to set security mount options for
Eric Parise0007522008-03-05 10:31:54 -0500287 * @opts binary data structure containing all lsm mount data
Eric Parisc9180a52007-11-30 13:00:35 -0500288 * @sb_clone_mnt_opts:
289 * Copy all security options from a given superblock to another
290 * @oldsb old superblock which contain information to clone
291 * @newsb new superblock which needs filled in
Eric Parise0007522008-03-05 10:31:54 -0500292 * @sb_parse_opts_str:
293 * Parse a string of security data filling in the opts structure
294 * @options string containing all mount options known by the LSM
295 * @opts binary data structure usable by the LSM
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296 *
297 * Security hooks for inode operations.
298 *
299 * @inode_alloc_security:
300 * Allocate and attach a security structure to @inode->i_security. The
301 * i_security field is initialized to NULL when the inode structure is
302 * allocated.
303 * @inode contains the inode structure.
304 * Return 0 if operation was successful.
305 * @inode_free_security:
306 * @inode contains the inode structure.
307 * Deallocate the inode security structure and set @inode->i_security to
Eric Paris7b41b172008-04-23 14:10:25 -0400308 * NULL.
Stephen Smalley5e41ff92005-09-09 13:01:35 -0700309 * @inode_init_security:
Eric Paris7b41b172008-04-23 14:10:25 -0400310 * Obtain the security attribute name suffix and value to set on a newly
Stephen Smalley5e41ff92005-09-09 13:01:35 -0700311 * created inode and set up the incore security field for the new inode.
312 * This hook is called by the fs code as part of the inode creation
313 * transaction and provides for atomic labeling of the inode, unlike
314 * the post_create/mkdir/... hooks called by the VFS. The hook function
315 * is expected to allocate the name and value via kmalloc, with the caller
316 * being responsible for calling kfree after using them.
317 * If the security module does not use security attributes or does
318 * not wish to put a security attribute on this particular inode,
319 * then it should return -EOPNOTSUPP to skip this processing.
320 * @inode contains the inode structure of the newly created inode.
321 * @dir contains the inode structure of the parent directory.
322 * @name will be set to the allocated name suffix (e.g. selinux).
323 * @value will be set to the allocated attribute value.
324 * @len will be set to the length of the value.
325 * Returns 0 if @name and @value have been successfully set,
326 * -EOPNOTSUPP if no security attribute is needed, or
327 * -ENOMEM on memory allocation failure.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328 * @inode_create:
329 * Check permission to create a regular file.
330 * @dir contains inode structure of the parent of the new file.
331 * @dentry contains the dentry structure for the file to be created.
332 * @mode contains the file mode of the file to be created.
333 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334 * @inode_link:
335 * Check permission before creating a new hard link to a file.
336 * @old_dentry contains the dentry structure for an existing link to the file.
337 * @dir contains the inode structure of the parent directory of the new link.
338 * @new_dentry contains the dentry structure for the new link.
339 * Return 0 if permission is granted.
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900340 * @path_link:
341 * Check permission before creating a new hard link to a file.
342 * @old_dentry contains the dentry structure for an existing link
343 * to the file.
344 * @new_dir contains the path structure of the parent directory of
345 * the new link.
346 * @new_dentry contains the dentry structure for the new link.
347 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348 * @inode_unlink:
Eric Paris7b41b172008-04-23 14:10:25 -0400349 * Check the permission to remove a hard link to a file.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350 * @dir contains the inode structure of parent directory of the file.
351 * @dentry contains the dentry structure for file to be unlinked.
352 * Return 0 if permission is granted.
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900353 * @path_unlink:
354 * Check the permission to remove a hard link to a file.
355 * @dir contains the path structure of parent directory of the file.
356 * @dentry contains the dentry structure for file to be unlinked.
357 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358 * @inode_symlink:
359 * Check the permission to create a symbolic link to a file.
360 * @dir contains the inode structure of parent directory of the symbolic link.
361 * @dentry contains the dentry structure of the symbolic link.
362 * @old_name contains the pathname of file.
363 * Return 0 if permission is granted.
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900364 * @path_symlink:
365 * Check the permission to create a symbolic link to a file.
366 * @dir contains the path structure of parent directory of
367 * the symbolic link.
368 * @dentry contains the dentry structure of the symbolic link.
369 * @old_name contains the pathname of file.
370 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371 * @inode_mkdir:
372 * Check permissions to create a new directory in the existing directory
Eric Paris7b41b172008-04-23 14:10:25 -0400373 * associated with inode strcture @dir.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374 * @dir containst the inode structure of parent of the directory to be created.
375 * @dentry contains the dentry structure of new directory.
376 * @mode contains the mode of new directory.
377 * Return 0 if permission is granted.
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900378 * @path_mkdir:
379 * Check permissions to create a new directory in the existing directory
380 * associated with path strcture @path.
381 * @dir containst the path structure of parent of the directory
382 * to be created.
383 * @dentry contains the dentry structure of new directory.
384 * @mode contains the mode of new directory.
385 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386 * @inode_rmdir:
387 * Check the permission to remove a directory.
388 * @dir contains the inode structure of parent of the directory to be removed.
389 * @dentry contains the dentry structure of directory to be removed.
390 * Return 0 if permission is granted.
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900391 * @path_rmdir:
392 * Check the permission to remove a directory.
393 * @dir contains the path structure of parent of the directory to be
394 * removed.
395 * @dentry contains the dentry structure of directory to be removed.
396 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397 * @inode_mknod:
398 * Check permissions when creating a special file (or a socket or a fifo
399 * file created via the mknod system call). Note that if mknod operation
400 * is being done for a regular file, then the create hook will be called
401 * and not this hook.
402 * @dir contains the inode structure of parent of the new file.
403 * @dentry contains the dentry structure of the new file.
404 * @mode contains the mode of the new file.
Michael Opdenacker59c51592007-05-09 08:57:56 +0200405 * @dev contains the device number.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406 * Return 0 if permission is granted.
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900407 * @path_mknod:
408 * Check permissions when creating a file. Note that this hook is called
409 * even if mknod operation is being done for a regular file.
410 * @dir contains the path structure of parent of the new file.
411 * @dentry contains the dentry structure of the new file.
412 * @mode contains the mode of the new file.
413 * @dev contains the undecoded device number. Use new_decode_dev() to get
414 * the decoded device number.
415 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416 * @inode_rename:
417 * Check for permission to rename a file or directory.
418 * @old_dir contains the inode structure for parent of the old link.
419 * @old_dentry contains the dentry structure of the old link.
420 * @new_dir contains the inode structure for parent of the new link.
421 * @new_dentry contains the dentry structure of the new link.
422 * Return 0 if permission is granted.
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900423 * @path_rename:
424 * Check for permission to rename a file or directory.
425 * @old_dir contains the path structure for parent of the old link.
426 * @old_dentry contains the dentry structure of the old link.
427 * @new_dir contains the path structure for parent of the new link.
428 * @new_dentry contains the dentry structure of the new link.
429 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430 * @inode_readlink:
431 * Check the permission to read the symbolic link.
432 * @dentry contains the dentry structure for the file link.
433 * Return 0 if permission is granted.
434 * @inode_follow_link:
435 * Check permission to follow a symbolic link when looking up a pathname.
436 * @dentry contains the dentry structure for the link.
437 * @nd contains the nameidata structure for the parent directory.
438 * Return 0 if permission is granted.
439 * @inode_permission:
440 * Check permission before accessing an inode. This hook is called by the
441 * existing Linux permission function, so a security module can use it to
442 * provide additional checking for existing Linux permission checks.
443 * Notice that this hook is called when a file is opened (as well as many
444 * other operations), whereas the file_security_ops permission hook is
445 * called when the actual read/write operations are performed.
446 * @inode contains the inode structure to check.
447 * @mask contains the permission mask.
Eric Paris7b41b172008-04-23 14:10:25 -0400448 * @nd contains the nameidata (may be NULL).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449 * Return 0 if permission is granted.
450 * @inode_setattr:
451 * Check permission before setting file attributes. Note that the kernel
452 * call to notify_change is performed from several locations, whenever
453 * file attributes change (such as when a file is truncated, chown/chmod
454 * operations, transferring disk quotas, etc).
455 * @dentry contains the dentry structure for the file.
456 * @attr is the iattr structure containing the new file attributes.
457 * Return 0 if permission is granted.
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900458 * @path_truncate:
459 * Check permission before truncating a file.
460 * @path contains the path structure for the file.
461 * @length is the new length of the file.
462 * @time_attrs is the flags passed to do_truncate().
463 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464 * @inode_getattr:
465 * Check permission before obtaining file attributes.
466 * @mnt is the vfsmount where the dentry was looked up
467 * @dentry contains the dentry structure for the file.
468 * Return 0 if permission is granted.
469 * @inode_delete:
470 * @inode contains the inode structure for deleted inode.
471 * This hook is called when a deleted inode is released (i.e. an inode
472 * with no hard links has its use count drop to zero). A security module
473 * can use this hook to release any persistent label associated with the
474 * inode.
475 * @inode_setxattr:
Eric Paris7b41b172008-04-23 14:10:25 -0400476 * Check permission before setting the extended attributes
477 * @value identified by @name for @dentry.
478 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479 * @inode_post_setxattr:
Eric Paris7b41b172008-04-23 14:10:25 -0400480 * Update inode security field after successful setxattr operation.
481 * @value identified by @name for @dentry.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700482 * @inode_getxattr:
Eric Paris7b41b172008-04-23 14:10:25 -0400483 * Check permission before obtaining the extended attributes
484 * identified by @name for @dentry.
485 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486 * @inode_listxattr:
Eric Paris7b41b172008-04-23 14:10:25 -0400487 * Check permission before obtaining the list of extended attribute
488 * names for @dentry.
489 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490 * @inode_removexattr:
Eric Paris7b41b172008-04-23 14:10:25 -0400491 * Check permission before removing the extended attribute
492 * identified by @name for @dentry.
493 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700494 * @inode_getsecurity:
David P. Quigley42492592008-02-04 22:29:39 -0800495 * Retrieve a copy of the extended attribute representation of the
496 * security label associated with @name for @inode via @buffer. Note that
497 * @name is the remainder of the attribute name after the security prefix
498 * has been removed. @alloc is used to specify of the call should return a
499 * value via the buffer or just the value length Return size of buffer on
500 * success.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501 * @inode_setsecurity:
502 * Set the security label associated with @name for @inode from the
503 * extended attribute value @value. @size indicates the size of the
504 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
Eric Paris7b41b172008-04-23 14:10:25 -0400505 * Note that @name is the remainder of the attribute name after the
Linus Torvalds1da177e2005-04-16 15:20:36 -0700506 * security. prefix has been removed.
507 * Return 0 on success.
508 * @inode_listsecurity:
509 * Copy the extended attribute names for the security labels
510 * associated with @inode into @buffer. The maximum size of @buffer
511 * is specified by @buffer_size. @buffer may be NULL to request
512 * the size of the buffer required.
513 * Returns number of bytes used/required on success.
Serge E. Hallynb5376772007-10-16 23:31:36 -0700514 * @inode_need_killpriv:
515 * Called when an inode has been changed.
516 * @dentry is the dentry being changed.
517 * Return <0 on error to abort the inode change operation.
518 * Return 0 if inode_killpriv does not need to be called.
519 * Return >0 if inode_killpriv does need to be called.
520 * @inode_killpriv:
521 * The setuid bit is being removed. Remove similar security labels.
522 * Called with the dentry->d_inode->i_mutex held.
523 * @dentry is the dentry being changed.
524 * Return 0 on success. If error is returned, then the operation
525 * causing setuid bit removal is failed.
Ahmed S. Darwish8a076192008-03-01 21:51:09 +0200526 * @inode_getsecid:
527 * Get the secid associated with the node.
528 * @inode contains a pointer to the inode.
529 * @secid contains a pointer to the location where result will be saved.
530 * In case of failure, @secid will be set to zero.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700531 *
532 * Security hooks for file operations
533 *
534 * @file_permission:
535 * Check file permissions before accessing an open file. This hook is
536 * called by various operations that read or write files. A security
537 * module can use this hook to perform additional checking on these
538 * operations, e.g. to revalidate permissions on use to support privilege
539 * bracketing or policy changes. Notice that this hook is used when the
540 * actual read/write operations are performed, whereas the
541 * inode_security_ops hook is called when a file is opened (as well as
542 * many other operations).
543 * Caveat: Although this hook can be used to revalidate permissions for
544 * various system call operations that read or write files, it does not
545 * address the revalidation of permissions for memory-mapped files.
546 * Security modules must handle this separately if they need such
547 * revalidation.
548 * @file contains the file structure being accessed.
549 * @mask contains the requested permissions.
550 * Return 0 if permission is granted.
551 * @file_alloc_security:
552 * Allocate and attach a security structure to the file->f_security field.
553 * The security field is initialized to NULL when the structure is first
554 * created.
555 * @file contains the file structure to secure.
556 * Return 0 if the hook is successful and permission is granted.
557 * @file_free_security:
558 * Deallocate and free any security structures stored in file->f_security.
559 * @file contains the file structure being modified.
560 * @file_ioctl:
561 * @file contains the file structure.
562 * @cmd contains the operation to perform.
563 * @arg contains the operational arguments.
564 * Check permission for an ioctl operation on @file. Note that @arg can
565 * sometimes represents a user space pointer; in other cases, it may be a
566 * simple integer value. When @arg represents a user space pointer, it
567 * should never be used by the security module.
568 * Return 0 if permission is granted.
569 * @file_mmap :
570 * Check permissions for a mmap operation. The @file may be NULL, e.g.
571 * if mapping anonymous memory.
572 * @file contains the file structure for file to map (may be NULL).
573 * @reqprot contains the protection requested by the application.
574 * @prot contains the protection that will be applied by the kernel.
575 * @flags contains the operational flags.
576 * Return 0 if permission is granted.
577 * @file_mprotect:
578 * Check permissions before changing memory access permissions.
579 * @vma contains the memory region to modify.
580 * @reqprot contains the protection requested by the application.
581 * @prot contains the protection that will be applied by the kernel.
582 * Return 0 if permission is granted.
583 * @file_lock:
584 * Check permission before performing file locking operations.
585 * Note: this hook mediates both flock and fcntl style locks.
586 * @file contains the file structure.
587 * @cmd contains the posix-translated lock operation to perform
588 * (e.g. F_RDLCK, F_WRLCK).
589 * Return 0 if permission is granted.
590 * @file_fcntl:
591 * Check permission before allowing the file operation specified by @cmd
592 * from being performed on the file @file. Note that @arg can sometimes
593 * represents a user space pointer; in other cases, it may be a simple
594 * integer value. When @arg represents a user space pointer, it should
595 * never be used by the security module.
596 * @file contains the file structure.
597 * @cmd contains the operation to be performed.
598 * @arg contains the operational arguments.
599 * Return 0 if permission is granted.
600 * @file_set_fowner:
601 * Save owner security information (typically from current->security) in
602 * file->f_security for later use by the send_sigiotask hook.
603 * @file contains the file structure to update.
604 * Return 0 on success.
605 * @file_send_sigiotask:
606 * Check permission for the file owner @fown to send SIGIO or SIGURG to the
607 * process @tsk. Note that this hook is sometimes called from interrupt.
608 * Note that the fown_struct, @fown, is never outside the context of a
609 * struct file, so the file structure (and associated security information)
610 * can always be obtained:
Robert P. J. Dayb385a142007-02-10 01:46:25 -0800611 * container_of(fown, struct file, f_owner)
Eric Paris7b41b172008-04-23 14:10:25 -0400612 * @tsk contains the structure of task receiving signal.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700613 * @fown contains the file owner information.
614 * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
615 * Return 0 if permission is granted.
616 * @file_receive:
617 * This hook allows security modules to control the ability of a process
618 * to receive an open file descriptor via socket IPC.
619 * @file contains the file structure being received.
620 * Return 0 if permission is granted.
621 *
Yuichi Nakamura788e7dd2007-09-14 09:27:07 +0900622 * Security hook for dentry
623 *
624 * @dentry_open
625 * Save open-time permission checking state for later use upon
626 * file_permission, and recheck access if anything has changed
627 * since inode_permission.
628 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700629 * Security hooks for task operations.
630 *
631 * @task_create:
632 * Check permission before creating a child process. See the clone(2)
633 * manual page for definitions of the @clone_flags.
634 * @clone_flags contains the flags indicating what should be shared.
635 * Return 0 if permission is granted.
David Howellsf1752ee2008-11-14 10:39:17 +1100636 * @cred_free:
637 * @cred points to the credentials.
638 * Deallocate and clear the cred->security field in a set of credentials.
David Howellsd84f4f92008-11-14 10:39:23 +1100639 * @cred_prepare:
640 * @new points to the new credentials.
641 * @old points to the original credentials.
642 * @gfp indicates the atomicity of any memory allocations.
643 * Prepare a new set of credentials by copying the data from the old set.
644 * @cred_commit:
645 * @new points to the new credentials.
646 * @old points to the original credentials.
647 * Install a new set of credentials.
David Howells3a3b7ce2008-11-14 10:39:28 +1100648 * @kernel_act_as:
649 * Set the credentials for a kernel service to act as (subjective context).
650 * @new points to the credentials to be modified.
651 * @secid specifies the security ID to be set
652 * The current task must be the one that nominated @secid.
653 * Return 0 if successful.
654 * @kernel_create_files_as:
655 * Set the file creation context in a set of credentials to be the same as
656 * the objective context of the specified inode.
657 * @new points to the credentials to be modified.
658 * @inode points to the inode to use as a reference.
659 * The current task must be the one that nominated @inode.
660 * Return 0 if successful.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700661 * @task_setuid:
662 * Check permission before setting one or more of the user identity
663 * attributes of the current process. The @flags parameter indicates
664 * which of the set*uid system calls invoked this hook and how to
665 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
666 * definitions at the beginning of this file for the @flags values and
667 * their meanings.
668 * @id0 contains a uid.
669 * @id1 contains a uid.
670 * @id2 contains a uid.
671 * @flags contains one of the LSM_SETID_* values.
672 * Return 0 if permission is granted.
David Howellsd84f4f92008-11-14 10:39:23 +1100673 * @task_fix_setuid:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700674 * Update the module's state after setting one or more of the user
675 * identity attributes of the current process. The @flags parameter
676 * indicates which of the set*uid system calls invoked this hook. If
David Howellsd84f4f92008-11-14 10:39:23 +1100677 * @new is the set of credentials that will be installed. Modifications
678 * should be made to this rather than to @current->cred.
679 * @old is the set of credentials that are being replaces
Linus Torvalds1da177e2005-04-16 15:20:36 -0700680 * @flags contains one of the LSM_SETID_* values.
681 * Return 0 on success.
682 * @task_setgid:
683 * Check permission before setting one or more of the group identity
684 * attributes of the current process. The @flags parameter indicates
685 * which of the set*gid system calls invoked this hook and how to
686 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
687 * definitions at the beginning of this file for the @flags values and
688 * their meanings.
689 * @id0 contains a gid.
690 * @id1 contains a gid.
691 * @id2 contains a gid.
692 * @flags contains one of the LSM_SETID_* values.
693 * Return 0 if permission is granted.
694 * @task_setpgid:
695 * Check permission before setting the process group identifier of the
696 * process @p to @pgid.
697 * @p contains the task_struct for process being modified.
698 * @pgid contains the new pgid.
699 * Return 0 if permission is granted.
700 * @task_getpgid:
701 * Check permission before getting the process group identifier of the
702 * process @p.
703 * @p contains the task_struct for the process.
704 * Return 0 if permission is granted.
705 * @task_getsid:
706 * Check permission before getting the session identifier of the process
707 * @p.
708 * @p contains the task_struct for the process.
709 * Return 0 if permission is granted.
David Quigleyf9008e42006-06-30 01:55:46 -0700710 * @task_getsecid:
711 * Retrieve the security identifier of the process @p.
712 * @p contains the task_struct for the process and place is into @secid.
Ahmed S. Darwish8a076192008-03-01 21:51:09 +0200713 * In case of failure, @secid will be set to zero.
714 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715 * @task_setgroups:
716 * Check permission before setting the supplementary group set of the
717 * current process.
718 * @group_info contains the new group information.
719 * Return 0 if permission is granted.
720 * @task_setnice:
721 * Check permission before setting the nice value of @p to @nice.
722 * @p contains the task_struct of process.
723 * @nice contains the new nice value.
724 * Return 0 if permission is granted.
James Morris03e68062006-06-23 02:03:58 -0700725 * @task_setioprio
726 * Check permission before setting the ioprio value of @p to @ioprio.
727 * @p contains the task_struct of process.
728 * @ioprio contains the new ioprio value
729 * Return 0 if permission is granted.
David Quigleya1836a42006-06-30 01:55:49 -0700730 * @task_getioprio
731 * Check permission before getting the ioprio value of @p.
732 * @p contains the task_struct of process.
733 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700734 * @task_setrlimit:
735 * Check permission before setting the resource limits of the current
736 * process for @resource to @new_rlim. The old resource limit values can
737 * be examined by dereferencing (current->signal->rlim + resource).
738 * @resource contains the resource whose limit is being set.
739 * @new_rlim contains the new limits for @resource.
740 * Return 0 if permission is granted.
741 * @task_setscheduler:
742 * Check permission before setting scheduling policy and/or parameters of
743 * process @p based on @policy and @lp.
744 * @p contains the task_struct for process.
745 * @policy contains the scheduling policy.
746 * @lp contains the scheduling parameters.
747 * Return 0 if permission is granted.
748 * @task_getscheduler:
749 * Check permission before obtaining scheduling information for process
750 * @p.
751 * @p contains the task_struct for process.
752 * Return 0 if permission is granted.
David Quigley35601542006-06-23 02:04:01 -0700753 * @task_movememory
754 * Check permission before moving memory owned by process @p.
755 * @p contains the task_struct for process.
756 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700757 * @task_kill:
758 * Check permission before sending signal @sig to @p. @info can be NULL,
759 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
760 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
761 * from the kernel and should typically be permitted.
762 * SIGIO signals are handled separately by the send_sigiotask hook in
763 * file_security_ops.
764 * @p contains the task_struct for process.
765 * @info contains the signal information.
766 * @sig contains the signal value.
David Quigleyf9008e42006-06-30 01:55:46 -0700767 * @secid contains the sid of the process where the signal originated
Linus Torvalds1da177e2005-04-16 15:20:36 -0700768 * Return 0 if permission is granted.
769 * @task_wait:
770 * Check permission before allowing a process to reap a child process @p
771 * and collect its status information.
772 * @p contains the task_struct for process.
773 * Return 0 if permission is granted.
774 * @task_prctl:
775 * Check permission before performing a process control operation on the
776 * current process.
777 * @option contains the operation.
778 * @arg2 contains a argument.
779 * @arg3 contains a argument.
780 * @arg4 contains a argument.
781 * @arg5 contains a argument.
David Howellsd84f4f92008-11-14 10:39:23 +1100782 * Return -ENOSYS if no-one wanted to handle this op, any other value to
783 * cause prctl() to return immediately with that value.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700784 * @task_to_inode:
Eric Paris7b41b172008-04-23 14:10:25 -0400785 * Set the security attributes for an inode based on an associated task's
786 * security attributes, e.g. for /proc/pid inodes.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700787 * @p contains the task_struct for the task.
788 * @inode contains the inode structure for the inode.
789 *
790 * Security hooks for Netlink messaging.
791 *
792 * @netlink_send:
793 * Save security information for a netlink message so that permission
794 * checking can be performed when the message is processed. The security
795 * information can be saved using the eff_cap field of the
Eric Paris7b41b172008-04-23 14:10:25 -0400796 * netlink_skb_parms structure. Also may be used to provide fine
Linus Torvalds1da177e2005-04-16 15:20:36 -0700797 * grained control over message transmission.
798 * @sk associated sock of task sending the message.,
799 * @skb contains the sk_buff structure for the netlink message.
800 * Return 0 if the information was successfully saved and message
801 * is allowed to be transmitted.
802 * @netlink_recv:
803 * Check permission before processing the received netlink message in
804 * @skb.
805 * @skb contains the sk_buff structure for the netlink message.
Darrel Goeddelc7bdb542006-06-27 13:26:11 -0700806 * @cap indicates the capability required
Linus Torvalds1da177e2005-04-16 15:20:36 -0700807 * Return 0 if permission is granted.
808 *
809 * Security hooks for Unix domain networking.
810 *
811 * @unix_stream_connect:
812 * Check permissions before establishing a Unix domain stream connection
813 * between @sock and @other.
814 * @sock contains the socket structure.
815 * @other contains the peer socket structure.
816 * Return 0 if permission is granted.
817 * @unix_may_send:
818 * Check permissions before connecting or sending datagrams from @sock to
819 * @other.
820 * @sock contains the socket structure.
821 * @sock contains the peer socket structure.
822 * Return 0 if permission is granted.
823 *
824 * The @unix_stream_connect and @unix_may_send hooks were necessary because
825 * Linux provides an alternative to the conventional file name space for Unix
826 * domain sockets. Whereas binding and connecting to sockets in the file name
827 * space is mediated by the typical file permissions (and caught by the mknod
828 * and permission hooks in inode_security_ops), binding and connecting to
829 * sockets in the abstract name space is completely unmediated. Sufficient
830 * control of Unix domain sockets in the abstract name space isn't possible
831 * using only the socket layer hooks, since we need to know the actual target
832 * socket, which is not looked up until we are inside the af_unix code.
833 *
834 * Security hooks for socket operations.
835 *
836 * @socket_create:
837 * Check permissions prior to creating a new socket.
838 * @family contains the requested protocol family.
839 * @type contains the requested communications type.
840 * @protocol contains the requested protocol.
841 * @kern set to 1 if a kernel socket.
842 * Return 0 if permission is granted.
843 * @socket_post_create:
844 * This hook allows a module to update or allocate a per-socket security
845 * structure. Note that the security field was not added directly to the
846 * socket structure, but rather, the socket security information is stored
847 * in the associated inode. Typically, the inode alloc_security hook will
848 * allocate and and attach security information to
849 * sock->inode->i_security. This hook may be used to update the
850 * sock->inode->i_security field with additional information that wasn't
851 * available when the inode was allocated.
852 * @sock contains the newly created socket structure.
853 * @family contains the requested protocol family.
854 * @type contains the requested communications type.
855 * @protocol contains the requested protocol.
856 * @kern set to 1 if a kernel socket.
857 * @socket_bind:
858 * Check permission before socket protocol layer bind operation is
859 * performed and the socket @sock is bound to the address specified in the
860 * @address parameter.
861 * @sock contains the socket structure.
862 * @address contains the address to bind to.
863 * @addrlen contains the length of address.
Eric Paris7b41b172008-04-23 14:10:25 -0400864 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700865 * @socket_connect:
866 * Check permission before socket protocol layer connect operation
867 * attempts to connect socket @sock to a remote address, @address.
868 * @sock contains the socket structure.
869 * @address contains the address of remote endpoint.
870 * @addrlen contains the length of address.
Eric Paris7b41b172008-04-23 14:10:25 -0400871 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700872 * @socket_listen:
873 * Check permission before socket protocol layer listen operation.
874 * @sock contains the socket structure.
875 * @backlog contains the maximum length for the pending connection queue.
876 * Return 0 if permission is granted.
877 * @socket_accept:
878 * Check permission before accepting a new connection. Note that the new
879 * socket, @newsock, has been created and some information copied to it,
880 * but the accept operation has not actually been performed.
881 * @sock contains the listening socket structure.
882 * @newsock contains the newly created server socket for connection.
883 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700884 * @socket_sendmsg:
885 * Check permission before transmitting a message to another socket.
886 * @sock contains the socket structure.
887 * @msg contains the message to be transmitted.
888 * @size contains the size of message.
889 * Return 0 if permission is granted.
890 * @socket_recvmsg:
891 * Check permission before receiving a message from a socket.
892 * @sock contains the socket structure.
893 * @msg contains the message structure.
894 * @size contains the size of message structure.
895 * @flags contains the operational flags.
Eric Paris7b41b172008-04-23 14:10:25 -0400896 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700897 * @socket_getsockname:
898 * Check permission before the local address (name) of the socket object
899 * @sock is retrieved.
900 * @sock contains the socket structure.
901 * Return 0 if permission is granted.
902 * @socket_getpeername:
903 * Check permission before the remote address (name) of a socket object
904 * @sock is retrieved.
905 * @sock contains the socket structure.
906 * Return 0 if permission is granted.
907 * @socket_getsockopt:
908 * Check permissions before retrieving the options associated with socket
909 * @sock.
910 * @sock contains the socket structure.
911 * @level contains the protocol level to retrieve option from.
912 * @optname contains the name of option to retrieve.
913 * Return 0 if permission is granted.
914 * @socket_setsockopt:
915 * Check permissions before setting the options associated with socket
916 * @sock.
917 * @sock contains the socket structure.
918 * @level contains the protocol level to set options for.
919 * @optname contains the name of the option to set.
Eric Paris7b41b172008-04-23 14:10:25 -0400920 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700921 * @socket_shutdown:
922 * Checks permission before all or part of a connection on the socket
923 * @sock is shut down.
924 * @sock contains the socket structure.
925 * @how contains the flag indicating how future sends and receives are handled.
926 * Return 0 if permission is granted.
927 * @socket_sock_rcv_skb:
928 * Check permissions on incoming network packets. This hook is distinct
929 * from Netfilter's IP input hooks since it is the first time that the
930 * incoming sk_buff @skb has been associated with a particular socket, @sk.
931 * @sk contains the sock (not socket) associated with the incoming sk_buff.
932 * @skb contains the incoming network data.
Serge Hallyn6da34ba2007-10-20 00:53:30 +0200933 * @socket_getpeersec_stream:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700934 * This hook allows the security module to provide peer socket security
Serge Hallyn6da34ba2007-10-20 00:53:30 +0200935 * state for unix or connected tcp sockets to userspace via getsockopt
936 * SO_GETPEERSEC. For tcp sockets this can be meaningful if the
937 * socket is associated with an ipsec SA.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700938 * @sock is the local socket.
939 * @optval userspace memory where the security state is to be copied.
940 * @optlen userspace int where the module should copy the actual length
941 * of the security state.
942 * @len as input is the maximum length to copy to userspace provided
943 * by the caller.
944 * Return 0 if all is well, otherwise, typical getsockopt return
945 * values.
Serge Hallyn6da34ba2007-10-20 00:53:30 +0200946 * @socket_getpeersec_dgram:
Eric Paris7b41b172008-04-23 14:10:25 -0400947 * This hook allows the security module to provide peer socket security
948 * state for udp sockets on a per-packet basis to userspace via
949 * getsockopt SO_GETPEERSEC. The application must first have indicated
950 * the IP_PASSSEC option via getsockopt. It can then retrieve the
951 * security state returned by this hook for a packet via the SCM_SECURITY
952 * ancillary message type.
953 * @skb is the skbuff for the packet being queried
954 * @secdata is a pointer to a buffer in which to copy the security data
955 * @seclen is the maximum length for @secdata
956 * Return 0 on success, error on failure.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700957 * @sk_alloc_security:
Eric Paris7b41b172008-04-23 14:10:25 -0400958 * Allocate and attach a security structure to the sk->sk_security field,
959 * which is used to copy security attributes between local stream sockets.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700960 * @sk_free_security:
961 * Deallocate security structure.
Venkat Yekkirala892c1412006-08-04 23:08:56 -0700962 * @sk_clone_security:
963 * Clone/copy security structure.
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -0700964 * @sk_getsecid:
965 * Retrieve the LSM-specific secid for the sock to enable caching of network
Trent Jaegerdf718372005-12-13 23:12:27 -0800966 * authorizations.
Venkat Yekkirala4237c752006-07-24 23:32:50 -0700967 * @sock_graft:
968 * Sets the socket's isec sid to the sock's sid.
969 * @inet_conn_request:
970 * Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
971 * @inet_csk_clone:
972 * Sets the new child socket's sid to the openreq sid.
Venkat Yekkirala6b877692006-11-08 17:04:09 -0600973 * @inet_conn_established:
Eric Paris7b41b172008-04-23 14:10:25 -0400974 * Sets the connection's peersid to the secmark on skb.
Venkat Yekkirala4237c752006-07-24 23:32:50 -0700975 * @req_classify_flow:
976 * Sets the flow's sid to the openreq sid.
Trent Jaegerdf718372005-12-13 23:12:27 -0800977 *
978 * Security hooks for XFRM operations.
979 *
980 * @xfrm_policy_alloc_security:
Paul Moore03e1ad72008-04-12 19:07:52 -0700981 * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
982 * Database used by the XFRM system.
Trent Jaegerdf718372005-12-13 23:12:27 -0800983 * @sec_ctx contains the security context information being provided by
984 * the user-level policy update program (e.g., setkey).
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -0700985 * Allocate a security structure to the xp->security field; the security
Venkat Yekkiralac1a856c2006-11-08 17:03:44 -0600986 * field is initialized to NULL when the xfrm_policy is allocated.
Trent Jaegerdf718372005-12-13 23:12:27 -0800987 * Return 0 if operation was successful (memory to allocate, legal context)
988 * @xfrm_policy_clone_security:
Paul Moore03e1ad72008-04-12 19:07:52 -0700989 * @old_ctx contains an existing xfrm_sec_ctx.
990 * @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
991 * Allocate a security structure in new_ctxp that contains the
992 * information from the old_ctx structure.
Trent Jaegerdf718372005-12-13 23:12:27 -0800993 * Return 0 if operation was successful (memory to allocate).
994 * @xfrm_policy_free_security:
Paul Moore03e1ad72008-04-12 19:07:52 -0700995 * @ctx contains the xfrm_sec_ctx
Catherine Zhangc8c05a82006-06-08 23:39:49 -0700996 * Deallocate xp->security.
997 * @xfrm_policy_delete_security:
Paul Moore03e1ad72008-04-12 19:07:52 -0700998 * @ctx contains the xfrm_sec_ctx.
Catherine Zhangc8c05a82006-06-08 23:39:49 -0700999 * Authorize deletion of xp->security.
Trent Jaegerdf718372005-12-13 23:12:27 -08001000 * @xfrm_state_alloc_security:
1001 * @x contains the xfrm_state being added to the Security Association
1002 * Database by the XFRM system.
1003 * @sec_ctx contains the security context information being provided by
1004 * the user-level SA generation program (e.g., setkey or racoon).
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001005 * @secid contains the secid from which to take the mls portion of the context.
1006 * Allocate a security structure to the x->security field; the security
1007 * field is initialized to NULL when the xfrm_state is allocated. Set the
1008 * context to correspond to either sec_ctx or polsec, with the mls portion
1009 * taken from secid in the latter case.
Trent Jaegerdf718372005-12-13 23:12:27 -08001010 * Return 0 if operation was successful (memory to allocate, legal context).
1011 * @xfrm_state_free_security:
1012 * @x contains the xfrm_state.
Catherine Zhangc8c05a82006-06-08 23:39:49 -07001013 * Deallocate x->security.
1014 * @xfrm_state_delete_security:
1015 * @x contains the xfrm_state.
1016 * Authorize deletion of x->security.
Trent Jaegerdf718372005-12-13 23:12:27 -08001017 * @xfrm_policy_lookup:
Paul Moore03e1ad72008-04-12 19:07:52 -07001018 * @ctx contains the xfrm_sec_ctx for which the access control is being
Trent Jaegerdf718372005-12-13 23:12:27 -08001019 * checked.
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001020 * @fl_secid contains the flow security label that is used to authorize
Trent Jaegerdf718372005-12-13 23:12:27 -08001021 * access to the policy xp.
1022 * @dir contains the direction of the flow (input or output).
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001023 * Check permission when a flow selects a xfrm_policy for processing
Trent Jaegerdf718372005-12-13 23:12:27 -08001024 * XFRMs on a packet. The hook is called when selecting either a
1025 * per-socket policy or a generic xfrm policy.
Venkat Yekkirala5b368e62006-10-05 15:42:18 -05001026 * Return 0 if permission is granted, -ESRCH otherwise, or -errno
1027 * on other errors.
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001028 * @xfrm_state_pol_flow_match:
1029 * @x contains the state to match.
1030 * @xp contains the policy to check for a match.
1031 * @fl contains the flow to check for a match.
1032 * Return 1 if there is a match.
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001033 * @xfrm_decode_session:
1034 * @skb points to skb to decode.
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07001035 * @secid points to the flow key secid to set.
1036 * @ckall says if all xfrms used should be checked for same secid.
1037 * Return 0 if ckall is zero or all xfrms used have the same secid.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001038 *
David Howells29db9192005-10-30 15:02:44 -08001039 * Security hooks affecting all Key Management operations
1040 *
1041 * @key_alloc:
1042 * Permit allocation of a key and assign security data. Note that key does
1043 * not have a serial number assigned at this point.
1044 * @key points to the key.
David Howells7e047ef2006-06-26 00:24:50 -07001045 * @flags is the allocation flags
David Howells29db9192005-10-30 15:02:44 -08001046 * Return 0 if permission is granted, -ve error otherwise.
1047 * @key_free:
1048 * Notification of destruction; free security data.
1049 * @key points to the key.
1050 * No return value.
1051 * @key_permission:
1052 * See whether a specific operational right is granted to a process on a
Eric Paris7b41b172008-04-23 14:10:25 -04001053 * key.
David Howells29db9192005-10-30 15:02:44 -08001054 * @key_ref refers to the key (key pointer + possession attribute bit).
David Howellsd84f4f92008-11-14 10:39:23 +11001055 * @cred points to the credentials to provide the context against which to
Eric Paris7b41b172008-04-23 14:10:25 -04001056 * evaluate the security data on the key.
David Howells29db9192005-10-30 15:02:44 -08001057 * @perm describes the combination of permissions required of this key.
1058 * Return 1 if permission granted, 0 if permission denied and -ve it the
Eric Paris7b41b172008-04-23 14:10:25 -04001059 * normal permissions model should be effected.
David Howells70a5bb72008-04-29 01:01:26 -07001060 * @key_getsecurity:
1061 * Get a textual representation of the security context attached to a key
1062 * for the purposes of honouring KEYCTL_GETSECURITY. This function
1063 * allocates the storage for the NUL-terminated string and the caller
1064 * should free it.
1065 * @key points to the key to be queried.
1066 * @_buffer points to a pointer that should be set to point to the
1067 * resulting string (if no label or an error occurs).
1068 * Return the length of the string (including terminating NUL) or -ve if
1069 * an error.
1070 * May also return 0 (and a NULL buffer pointer) if there is no label.
David Howells29db9192005-10-30 15:02:44 -08001071 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07001072 * Security hooks affecting all System V IPC operations.
1073 *
1074 * @ipc_permission:
1075 * Check permissions for access to IPC
1076 * @ipcp contains the kernel IPC permission structure
1077 * @flag contains the desired (requested) permission set
1078 * Return 0 if permission is granted.
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02001079 * @ipc_getsecid:
1080 * Get the secid associated with the ipc object.
1081 * @ipcp contains the kernel IPC permission structure.
1082 * @secid contains a pointer to the location where result will be saved.
1083 * In case of failure, @secid will be set to zero.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001084 *
1085 * Security hooks for individual messages held in System V IPC message queues
1086 * @msg_msg_alloc_security:
1087 * Allocate and attach a security structure to the msg->security field.
1088 * The security field is initialized to NULL when the structure is first
1089 * created.
1090 * @msg contains the message structure to be modified.
1091 * Return 0 if operation was successful and permission is granted.
1092 * @msg_msg_free_security:
1093 * Deallocate the security structure for this message.
1094 * @msg contains the message structure to be modified.
1095 *
1096 * Security hooks for System V IPC Message Queues
1097 *
1098 * @msg_queue_alloc_security:
1099 * Allocate and attach a security structure to the
1100 * msq->q_perm.security field. The security field is initialized to
1101 * NULL when the structure is first created.
1102 * @msq contains the message queue structure to be modified.
1103 * Return 0 if operation was successful and permission is granted.
1104 * @msg_queue_free_security:
1105 * Deallocate security structure for this message queue.
1106 * @msq contains the message queue structure to be modified.
1107 * @msg_queue_associate:
1108 * Check permission when a message queue is requested through the
1109 * msgget system call. This hook is only called when returning the
1110 * message queue identifier for an existing message queue, not when a
1111 * new message queue is created.
1112 * @msq contains the message queue to act upon.
1113 * @msqflg contains the operation control flags.
1114 * Return 0 if permission is granted.
1115 * @msg_queue_msgctl:
1116 * Check permission when a message control operation specified by @cmd
1117 * is to be performed on the message queue @msq.
1118 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
1119 * @msq contains the message queue to act upon. May be NULL.
1120 * @cmd contains the operation to be performed.
Eric Paris7b41b172008-04-23 14:10:25 -04001121 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001122 * @msg_queue_msgsnd:
1123 * Check permission before a message, @msg, is enqueued on the message
1124 * queue, @msq.
1125 * @msq contains the message queue to send message to.
1126 * @msg contains the message to be enqueued.
1127 * @msqflg contains operational flags.
1128 * Return 0 if permission is granted.
1129 * @msg_queue_msgrcv:
1130 * Check permission before a message, @msg, is removed from the message
Eric Paris7b41b172008-04-23 14:10:25 -04001131 * queue, @msq. The @target task structure contains a pointer to the
1132 * process that will be receiving the message (not equal to the current
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133 * process when inline receives are being performed).
1134 * @msq contains the message queue to retrieve message from.
1135 * @msg contains the message destination.
1136 * @target contains the task structure for recipient process.
1137 * @type contains the type of message requested.
1138 * @mode contains the operational flags.
1139 * Return 0 if permission is granted.
1140 *
1141 * Security hooks for System V Shared Memory Segments
1142 *
1143 * @shm_alloc_security:
1144 * Allocate and attach a security structure to the shp->shm_perm.security
1145 * field. The security field is initialized to NULL when the structure is
1146 * first created.
1147 * @shp contains the shared memory structure to be modified.
1148 * Return 0 if operation was successful and permission is granted.
1149 * @shm_free_security:
1150 * Deallocate the security struct for this memory segment.
1151 * @shp contains the shared memory structure to be modified.
1152 * @shm_associate:
1153 * Check permission when a shared memory region is requested through the
1154 * shmget system call. This hook is only called when returning the shared
1155 * memory region identifier for an existing region, not when a new shared
1156 * memory region is created.
1157 * @shp contains the shared memory structure to be modified.
1158 * @shmflg contains the operation control flags.
1159 * Return 0 if permission is granted.
1160 * @shm_shmctl:
1161 * Check permission when a shared memory control operation specified by
1162 * @cmd is to be performed on the shared memory region @shp.
1163 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1164 * @shp contains shared memory structure to be modified.
1165 * @cmd contains the operation to be performed.
1166 * Return 0 if permission is granted.
1167 * @shm_shmat:
1168 * Check permissions prior to allowing the shmat system call to attach the
1169 * shared memory segment @shp to the data segment of the calling process.
1170 * The attaching address is specified by @shmaddr.
1171 * @shp contains the shared memory structure to be modified.
1172 * @shmaddr contains the address to attach memory region to.
1173 * @shmflg contains the operational flags.
1174 * Return 0 if permission is granted.
1175 *
1176 * Security hooks for System V Semaphores
1177 *
1178 * @sem_alloc_security:
1179 * Allocate and attach a security structure to the sma->sem_perm.security
1180 * field. The security field is initialized to NULL when the structure is
1181 * first created.
1182 * @sma contains the semaphore structure
1183 * Return 0 if operation was successful and permission is granted.
1184 * @sem_free_security:
1185 * deallocate security struct for this semaphore
1186 * @sma contains the semaphore structure.
1187 * @sem_associate:
1188 * Check permission when a semaphore is requested through the semget
1189 * system call. This hook is only called when returning the semaphore
1190 * identifier for an existing semaphore, not when a new one must be
1191 * created.
1192 * @sma contains the semaphore structure.
1193 * @semflg contains the operation control flags.
1194 * Return 0 if permission is granted.
1195 * @sem_semctl:
1196 * Check permission when a semaphore operation specified by @cmd is to be
Eric Paris7b41b172008-04-23 14:10:25 -04001197 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
Linus Torvalds1da177e2005-04-16 15:20:36 -07001198 * IPC_INFO or SEM_INFO.
1199 * @sma contains the semaphore structure. May be NULL.
1200 * @cmd contains the operation to be performed.
1201 * Return 0 if permission is granted.
1202 * @sem_semop
1203 * Check permissions before performing operations on members of the
Eric Paris7b41b172008-04-23 14:10:25 -04001204 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1205 * may be modified.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001206 * @sma contains the semaphore structure.
1207 * @sops contains the operations to perform.
1208 * @nsops contains the number of operations to perform.
1209 * @alter contains the flag indicating whether changes are to be made.
1210 * Return 0 if permission is granted.
1211 *
David Howells5cd9c582008-08-14 11:37:28 +01001212 * @ptrace_may_access:
1213 * Check permission before allowing the current process to trace the
Linus Torvalds1da177e2005-04-16 15:20:36 -07001214 * @child process.
1215 * Security modules may also want to perform a process tracing check
1216 * during an execve in the set_security or apply_creds hooks of
David Howellsd84f4f92008-11-14 10:39:23 +11001217 * tracing check during an execve in the bprm_set_creds hook of
Linus Torvalds1da177e2005-04-16 15:20:36 -07001218 * binprm_security_ops if the process is being traced and its security
1219 * attributes would be changed by the execve.
David Howells5cd9c582008-08-14 11:37:28 +01001220 * @child contains the task_struct structure for the target process.
Stephen Smalley006ebb42008-05-19 08:32:49 -04001221 * @mode contains the PTRACE_MODE flags indicating the form of access.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001222 * Return 0 if permission is granted.
David Howells5cd9c582008-08-14 11:37:28 +01001223 * @ptrace_traceme:
1224 * Check that the @parent process has sufficient permission to trace the
1225 * current process before allowing the current process to present itself
1226 * to the @parent process for tracing.
1227 * The parent process will still have to undergo the ptrace_may_access
1228 * checks before it is allowed to trace this one.
1229 * @parent contains the task_struct structure for debugger process.
1230 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001231 * @capget:
1232 * Get the @effective, @inheritable, and @permitted capability sets for
1233 * the @target process. The hook may also perform permission checking to
1234 * determine if the current process is allowed to see the capability sets
1235 * of the @target process.
1236 * @target contains the task_struct structure for target process.
1237 * @effective contains the effective capability set.
1238 * @inheritable contains the inheritable capability set.
1239 * @permitted contains the permitted capability set.
1240 * Return 0 if the capability sets were successfully obtained.
David Howellsd84f4f92008-11-14 10:39:23 +11001241 * @capset:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001242 * Set the @effective, @inheritable, and @permitted capability sets for
David Howells1cdcbec2008-11-14 10:39:14 +11001243 * the current process.
David Howellsd84f4f92008-11-14 10:39:23 +11001244 * @new contains the new credentials structure for target process.
1245 * @old contains the current credentials structure for target process.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001246 * @effective contains the effective capability set.
1247 * @inheritable contains the inheritable capability set.
1248 * @permitted contains the permitted capability set.
David Howellsd84f4f92008-11-14 10:39:23 +11001249 * Return 0 and update @new if permission is granted.
Chris Wright12b59892006-03-25 03:07:41 -08001250 * @capable:
David Howells3699c532009-01-06 22:27:01 +00001251 * Check whether the @tsk process has the @cap capability in the indicated
1252 * credentials.
Chris Wright12b59892006-03-25 03:07:41 -08001253 * @tsk contains the task_struct for the process.
David Howells3699c532009-01-06 22:27:01 +00001254 * @cred contains the credentials to use.
Chris Wright12b59892006-03-25 03:07:41 -08001255 * @cap contains the capability <include/linux/capability.h>.
David Howells3699c532009-01-06 22:27:01 +00001256 * @audit: Whether to write an audit message or not
Chris Wright12b59892006-03-25 03:07:41 -08001257 * Return 0 if the capability is granted for @tsk.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001258 * @acct:
1259 * Check permission before enabling or disabling process accounting. If
1260 * accounting is being enabled, then @file refers to the open file used to
1261 * store accounting records. If accounting is being disabled, then @file
1262 * is NULL.
1263 * @file contains the file structure for the accounting file (may be NULL).
1264 * Return 0 if permission is granted.
1265 * @sysctl:
1266 * Check permission before accessing the @table sysctl variable in the
1267 * manner specified by @op.
1268 * @table contains the ctl_table structure for the sysctl variable.
1269 * @op contains the operation (001 = search, 002 = write, 004 = read).
1270 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001271 * @syslog:
1272 * Check permission before accessing the kernel message ring or changing
1273 * logging to the console.
Eric Paris7b41b172008-04-23 14:10:25 -04001274 * See the syslog(2) manual page for an explanation of the @type values.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001275 * @type contains the type of action.
1276 * Return 0 if permission is granted.
1277 * @settime:
1278 * Check permission to change the system time.
1279 * struct timespec and timezone are defined in include/linux/time.h
1280 * @ts contains new time
1281 * @tz contains new timezone
1282 * Return 0 if permission is granted.
1283 * @vm_enough_memory:
1284 * Check permissions for allocating a new virtual mapping.
Alan Cox34b4e4a2007-08-22 14:01:28 -07001285 * @mm contains the mm struct it is being added to.
Eric Paris7b41b172008-04-23 14:10:25 -04001286 * @pages contains the number of pages.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001287 * Return 0 if permission is granted.
1288 *
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07001289 * @secid_to_secctx:
1290 * Convert secid to security context.
1291 * @secid contains the security ID.
1292 * @secdata contains the pointer that stores the converted security context.
David Howells63cb3442008-01-15 23:47:35 +00001293 * @secctx_to_secid:
Eric Paris7b41b172008-04-23 14:10:25 -04001294 * Convert security context to secid.
1295 * @secid contains the pointer to the generated security ID.
1296 * @secdata contains the security context.
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07001297 *
1298 * @release_secctx:
1299 * Release the security context.
1300 * @secdata contains the security context.
1301 * @seclen contains the length of the security context.
1302 *
Ahmed S. Darwish03d37d22008-03-01 22:00:05 +02001303 * Security hooks for Audit
1304 *
1305 * @audit_rule_init:
1306 * Allocate and initialize an LSM audit rule structure.
1307 * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
1308 * @op contains the operator the rule uses.
1309 * @rulestr contains the context where the rule will be applied to.
1310 * @lsmrule contains a pointer to receive the result.
1311 * Return 0 if @lsmrule has been successfully set,
1312 * -EINVAL in case of an invalid rule.
1313 *
1314 * @audit_rule_known:
1315 * Specifies whether given @rule contains any fields related to current LSM.
1316 * @rule contains the audit rule of interest.
1317 * Return 1 in case of relation found, 0 otherwise.
1318 *
1319 * @audit_rule_match:
1320 * Determine if given @secid matches a rule previously approved
1321 * by @audit_rule_known.
1322 * @secid contains the security id in question.
1323 * @field contains the field which relates to current LSM.
1324 * @op contains the operator that will be used for matching.
1325 * @rule points to the audit rule that will be checked against.
1326 * @actx points to the audit context associated with the check.
1327 * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
1328 *
1329 * @audit_rule_free:
1330 * Deallocate the LSM audit rule structure previously allocated by
1331 * audit_rule_init.
1332 * @rule contains the allocated rule
1333 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07001334 * This is the main security structure.
1335 */
1336struct security_operations {
Ahmed S. Darwish076c54c2008-03-06 18:09:10 +02001337 char name[SECURITY_NAME_MAX + 1];
1338
David Howells5cd9c582008-08-14 11:37:28 +01001339 int (*ptrace_may_access) (struct task_struct *child, unsigned int mode);
1340 int (*ptrace_traceme) (struct task_struct *parent);
Eric Paris7b41b172008-04-23 14:10:25 -04001341 int (*capget) (struct task_struct *target,
1342 kernel_cap_t *effective,
1343 kernel_cap_t *inheritable, kernel_cap_t *permitted);
David Howellsd84f4f92008-11-14 10:39:23 +11001344 int (*capset) (struct cred *new,
1345 const struct cred *old,
1346 const kernel_cap_t *effective,
1347 const kernel_cap_t *inheritable,
1348 const kernel_cap_t *permitted);
David Howells3699c532009-01-06 22:27:01 +00001349 int (*capable) (struct task_struct *tsk, const struct cred *cred,
1350 int cap, int audit);
Eric Paris7b41b172008-04-23 14:10:25 -04001351 int (*acct) (struct file *file);
1352 int (*sysctl) (struct ctl_table *table, int op);
1353 int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
1354 int (*quota_on) (struct dentry *dentry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001355 int (*syslog) (int type);
1356 int (*settime) (struct timespec *ts, struct timezone *tz);
Alan Cox34b4e4a2007-08-22 14:01:28 -07001357 int (*vm_enough_memory) (struct mm_struct *mm, long pages);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001358
David Howellsa6f76f22008-11-14 10:39:24 +11001359 int (*bprm_set_creds) (struct linux_binprm *bprm);
Eric Paris7b41b172008-04-23 14:10:25 -04001360 int (*bprm_check_security) (struct linux_binprm *bprm);
1361 int (*bprm_secureexec) (struct linux_binprm *bprm);
David Howellsa6f76f22008-11-14 10:39:24 +11001362 void (*bprm_committing_creds) (struct linux_binprm *bprm);
1363 void (*bprm_committed_creds) (struct linux_binprm *bprm);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001364
Eric Paris7b41b172008-04-23 14:10:25 -04001365 int (*sb_alloc_security) (struct super_block *sb);
1366 void (*sb_free_security) (struct super_block *sb);
1367 int (*sb_copy_data) (char *orig, char *copy);
James Morris12204e22008-12-19 10:44:42 +11001368 int (*sb_kern_mount) (struct super_block *sb, int flags, void *data);
Eric Paris2069f452008-07-04 09:47:13 +10001369 int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
David Howells726c3342006-06-23 02:02:58 -07001370 int (*sb_statfs) (struct dentry *dentry);
Al Virob5266eb2008-03-22 17:48:24 -04001371 int (*sb_mount) (char *dev_name, struct path *path,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001372 char *type, unsigned long flags, void *data);
Eric Paris7b41b172008-04-23 14:10:25 -04001373 int (*sb_check_sb) (struct vfsmount *mnt, struct path *path);
1374 int (*sb_umount) (struct vfsmount *mnt, int flags);
1375 void (*sb_umount_close) (struct vfsmount *mnt);
1376 void (*sb_umount_busy) (struct vfsmount *mnt);
1377 void (*sb_post_remount) (struct vfsmount *mnt,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001378 unsigned long flags, void *data);
Eric Paris7b41b172008-04-23 14:10:25 -04001379 void (*sb_post_addmount) (struct vfsmount *mnt,
Al Virob5266eb2008-03-22 17:48:24 -04001380 struct path *mountpoint);
1381 int (*sb_pivotroot) (struct path *old_path,
1382 struct path *new_path);
1383 void (*sb_post_pivotroot) (struct path *old_path,
1384 struct path *new_path);
Eric Parise0007522008-03-05 10:31:54 -05001385 int (*sb_set_mnt_opts) (struct super_block *sb,
1386 struct security_mnt_opts *opts);
Eric Parisc9180a52007-11-30 13:00:35 -05001387 void (*sb_clone_mnt_opts) (const struct super_block *oldsb,
1388 struct super_block *newsb);
Eric Parise0007522008-03-05 10:31:54 -05001389 int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001390
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09001391#ifdef CONFIG_SECURITY_PATH
1392 int (*path_unlink) (struct path *dir, struct dentry *dentry);
1393 int (*path_mkdir) (struct path *dir, struct dentry *dentry, int mode);
1394 int (*path_rmdir) (struct path *dir, struct dentry *dentry);
1395 int (*path_mknod) (struct path *dir, struct dentry *dentry, int mode,
1396 unsigned int dev);
1397 int (*path_truncate) (struct path *path, loff_t length,
1398 unsigned int time_attrs);
1399 int (*path_symlink) (struct path *dir, struct dentry *dentry,
1400 const char *old_name);
1401 int (*path_link) (struct dentry *old_dentry, struct path *new_dir,
1402 struct dentry *new_dentry);
1403 int (*path_rename) (struct path *old_dir, struct dentry *old_dentry,
1404 struct path *new_dir, struct dentry *new_dentry);
1405#endif
1406
Eric Paris7b41b172008-04-23 14:10:25 -04001407 int (*inode_alloc_security) (struct inode *inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001408 void (*inode_free_security) (struct inode *inode);
Stephen Smalley5e41ff92005-09-09 13:01:35 -07001409 int (*inode_init_security) (struct inode *inode, struct inode *dir,
1410 char **name, void **value, size_t *len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001411 int (*inode_create) (struct inode *dir,
Eric Paris7b41b172008-04-23 14:10:25 -04001412 struct dentry *dentry, int mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001413 int (*inode_link) (struct dentry *old_dentry,
Eric Paris7b41b172008-04-23 14:10:25 -04001414 struct inode *dir, struct dentry *new_dentry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001415 int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
1416 int (*inode_symlink) (struct inode *dir,
Eric Paris7b41b172008-04-23 14:10:25 -04001417 struct dentry *dentry, const char *old_name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001418 int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, int mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001419 int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
1420 int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
Eric Paris7b41b172008-04-23 14:10:25 -04001421 int mode, dev_t dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001422 int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
Eric Paris7b41b172008-04-23 14:10:25 -04001423 struct inode *new_dir, struct dentry *new_dentry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001424 int (*inode_readlink) (struct dentry *dentry);
1425 int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
Al Virob77b0642008-07-17 09:37:02 -04001426 int (*inode_permission) (struct inode *inode, int mask);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001427 int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
1428 int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
Eric Paris7b41b172008-04-23 14:10:25 -04001429 void (*inode_delete) (struct inode *inode);
David Howells8f0cfa52008-04-29 00:59:41 -07001430 int (*inode_setxattr) (struct dentry *dentry, const char *name,
1431 const void *value, size_t size, int flags);
1432 void (*inode_post_setxattr) (struct dentry *dentry, const char *name,
1433 const void *value, size_t size, int flags);
1434 int (*inode_getxattr) (struct dentry *dentry, const char *name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001435 int (*inode_listxattr) (struct dentry *dentry);
David Howells8f0cfa52008-04-29 00:59:41 -07001436 int (*inode_removexattr) (struct dentry *dentry, const char *name);
Serge E. Hallynb5376772007-10-16 23:31:36 -07001437 int (*inode_need_killpriv) (struct dentry *dentry);
1438 int (*inode_killpriv) (struct dentry *dentry);
Eric Paris7b41b172008-04-23 14:10:25 -04001439 int (*inode_getsecurity) (const struct inode *inode, const char *name, void **buffer, bool alloc);
1440 int (*inode_setsecurity) (struct inode *inode, const char *name, const void *value, size_t size, int flags);
1441 int (*inode_listsecurity) (struct inode *inode, char *buffer, size_t buffer_size);
1442 void (*inode_getsecid) (const struct inode *inode, u32 *secid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001443
Eric Paris7b41b172008-04-23 14:10:25 -04001444 int (*file_permission) (struct file *file, int mask);
1445 int (*file_alloc_security) (struct file *file);
1446 void (*file_free_security) (struct file *file);
1447 int (*file_ioctl) (struct file *file, unsigned int cmd,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001448 unsigned long arg);
Eric Paris7b41b172008-04-23 14:10:25 -04001449 int (*file_mmap) (struct file *file,
Eric Parised032182007-06-28 15:55:21 -04001450 unsigned long reqprot, unsigned long prot,
1451 unsigned long flags, unsigned long addr,
1452 unsigned long addr_only);
Eric Paris7b41b172008-04-23 14:10:25 -04001453 int (*file_mprotect) (struct vm_area_struct *vma,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001454 unsigned long reqprot,
1455 unsigned long prot);
Eric Paris7b41b172008-04-23 14:10:25 -04001456 int (*file_lock) (struct file *file, unsigned int cmd);
1457 int (*file_fcntl) (struct file *file, unsigned int cmd,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001458 unsigned long arg);
Eric Paris7b41b172008-04-23 14:10:25 -04001459 int (*file_set_fowner) (struct file *file);
1460 int (*file_send_sigiotask) (struct task_struct *tsk,
1461 struct fown_struct *fown, int sig);
1462 int (*file_receive) (struct file *file);
David Howells745ca242008-11-14 10:39:22 +11001463 int (*dentry_open) (struct file *file, const struct cred *cred);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001464
1465 int (*task_create) (unsigned long clone_flags);
David Howellsf1752ee2008-11-14 10:39:17 +11001466 void (*cred_free) (struct cred *cred);
David Howellsd84f4f92008-11-14 10:39:23 +11001467 int (*cred_prepare)(struct cred *new, const struct cred *old,
1468 gfp_t gfp);
1469 void (*cred_commit)(struct cred *new, const struct cred *old);
David Howells3a3b7ce2008-11-14 10:39:28 +11001470 int (*kernel_act_as)(struct cred *new, u32 secid);
1471 int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001472 int (*task_setuid) (uid_t id0, uid_t id1, uid_t id2, int flags);
David Howellsd84f4f92008-11-14 10:39:23 +11001473 int (*task_fix_setuid) (struct cred *new, const struct cred *old,
1474 int flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001475 int (*task_setgid) (gid_t id0, gid_t id1, gid_t id2, int flags);
Eric Paris7b41b172008-04-23 14:10:25 -04001476 int (*task_setpgid) (struct task_struct *p, pid_t pgid);
1477 int (*task_getpgid) (struct task_struct *p);
1478 int (*task_getsid) (struct task_struct *p);
1479 void (*task_getsecid) (struct task_struct *p, u32 *secid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001480 int (*task_setgroups) (struct group_info *group_info);
Eric Paris7b41b172008-04-23 14:10:25 -04001481 int (*task_setnice) (struct task_struct *p, int nice);
1482 int (*task_setioprio) (struct task_struct *p, int ioprio);
1483 int (*task_getioprio) (struct task_struct *p);
1484 int (*task_setrlimit) (unsigned int resource, struct rlimit *new_rlim);
1485 int (*task_setscheduler) (struct task_struct *p, int policy,
1486 struct sched_param *lp);
1487 int (*task_getscheduler) (struct task_struct *p);
1488 int (*task_movememory) (struct task_struct *p);
1489 int (*task_kill) (struct task_struct *p,
1490 struct siginfo *info, int sig, u32 secid);
1491 int (*task_wait) (struct task_struct *p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001492 int (*task_prctl) (int option, unsigned long arg2,
1493 unsigned long arg3, unsigned long arg4,
David Howellsd84f4f92008-11-14 10:39:23 +11001494 unsigned long arg5);
Eric Paris7b41b172008-04-23 14:10:25 -04001495 void (*task_to_inode) (struct task_struct *p, struct inode *inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001496
Eric Paris7b41b172008-04-23 14:10:25 -04001497 int (*ipc_permission) (struct kern_ipc_perm *ipcp, short flag);
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02001498 void (*ipc_getsecid) (struct kern_ipc_perm *ipcp, u32 *secid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001499
Eric Paris7b41b172008-04-23 14:10:25 -04001500 int (*msg_msg_alloc_security) (struct msg_msg *msg);
1501 void (*msg_msg_free_security) (struct msg_msg *msg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001502
Eric Paris7b41b172008-04-23 14:10:25 -04001503 int (*msg_queue_alloc_security) (struct msg_queue *msq);
1504 void (*msg_queue_free_security) (struct msg_queue *msq);
1505 int (*msg_queue_associate) (struct msg_queue *msq, int msqflg);
1506 int (*msg_queue_msgctl) (struct msg_queue *msq, int cmd);
1507 int (*msg_queue_msgsnd) (struct msg_queue *msq,
1508 struct msg_msg *msg, int msqflg);
1509 int (*msg_queue_msgrcv) (struct msg_queue *msq,
1510 struct msg_msg *msg,
1511 struct task_struct *target,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001512 long type, int mode);
1513
Eric Paris7b41b172008-04-23 14:10:25 -04001514 int (*shm_alloc_security) (struct shmid_kernel *shp);
1515 void (*shm_free_security) (struct shmid_kernel *shp);
1516 int (*shm_associate) (struct shmid_kernel *shp, int shmflg);
1517 int (*shm_shmctl) (struct shmid_kernel *shp, int cmd);
1518 int (*shm_shmat) (struct shmid_kernel *shp,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001519 char __user *shmaddr, int shmflg);
1520
Eric Paris7b41b172008-04-23 14:10:25 -04001521 int (*sem_alloc_security) (struct sem_array *sma);
1522 void (*sem_free_security) (struct sem_array *sma);
1523 int (*sem_associate) (struct sem_array *sma, int semflg);
1524 int (*sem_semctl) (struct sem_array *sma, int cmd);
1525 int (*sem_semop) (struct sem_array *sma,
1526 struct sembuf *sops, unsigned nsops, int alter);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001527
Eric Paris7b41b172008-04-23 14:10:25 -04001528 int (*netlink_send) (struct sock *sk, struct sk_buff *skb);
1529 int (*netlink_recv) (struct sk_buff *skb, int cap);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001530
Linus Torvalds1da177e2005-04-16 15:20:36 -07001531 void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1532
Eric Paris7b41b172008-04-23 14:10:25 -04001533 int (*getprocattr) (struct task_struct *p, char *name, char **value);
1534 int (*setprocattr) (struct task_struct *p, char *name, void *value, size_t size);
1535 int (*secid_to_secctx) (u32 secid, char **secdata, u32 *seclen);
David Howells7bf570d2008-04-29 20:52:51 +01001536 int (*secctx_to_secid) (const char *secdata, u32 seclen, u32 *secid);
Eric Paris7b41b172008-04-23 14:10:25 -04001537 void (*release_secctx) (char *secdata, u32 seclen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001538
1539#ifdef CONFIG_SECURITY_NETWORK
Eric Paris7b41b172008-04-23 14:10:25 -04001540 int (*unix_stream_connect) (struct socket *sock,
1541 struct socket *other, struct sock *newsk);
1542 int (*unix_may_send) (struct socket *sock, struct socket *other);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001543
1544 int (*socket_create) (int family, int type, int protocol, int kern);
Eric Paris7b41b172008-04-23 14:10:25 -04001545 int (*socket_post_create) (struct socket *sock, int family,
Venkat Yekkirala7420ed22006-08-04 23:17:57 -07001546 int type, int protocol, int kern);
Eric Paris7b41b172008-04-23 14:10:25 -04001547 int (*socket_bind) (struct socket *sock,
1548 struct sockaddr *address, int addrlen);
1549 int (*socket_connect) (struct socket *sock,
1550 struct sockaddr *address, int addrlen);
1551 int (*socket_listen) (struct socket *sock, int backlog);
1552 int (*socket_accept) (struct socket *sock, struct socket *newsock);
Eric Paris7b41b172008-04-23 14:10:25 -04001553 int (*socket_sendmsg) (struct socket *sock,
1554 struct msghdr *msg, int size);
1555 int (*socket_recvmsg) (struct socket *sock,
1556 struct msghdr *msg, int size, int flags);
1557 int (*socket_getsockname) (struct socket *sock);
1558 int (*socket_getpeername) (struct socket *sock);
1559 int (*socket_getsockopt) (struct socket *sock, int level, int optname);
1560 int (*socket_setsockopt) (struct socket *sock, int level, int optname);
1561 int (*socket_shutdown) (struct socket *sock, int how);
1562 int (*socket_sock_rcv_skb) (struct sock *sk, struct sk_buff *skb);
Catherine Zhang2c7946a2006-03-20 22:41:23 -08001563 int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07001564 int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
Al Viro7d877f32005-10-21 03:20:43 -04001565 int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001566 void (*sk_free_security) (struct sock *sk);
Venkat Yekkirala892c1412006-08-04 23:08:56 -07001567 void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07001568 void (*sk_getsecid) (struct sock *sk, u32 *secid);
Eric Paris7b41b172008-04-23 14:10:25 -04001569 void (*sock_graft) (struct sock *sk, struct socket *parent);
1570 int (*inet_conn_request) (struct sock *sk, struct sk_buff *skb,
1571 struct request_sock *req);
1572 void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req);
1573 void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb);
1574 void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001575#endif /* CONFIG_SECURITY_NETWORK */
David Howells29db9192005-10-30 15:02:44 -08001576
Trent Jaegerdf718372005-12-13 23:12:27 -08001577#ifdef CONFIG_SECURITY_NETWORK_XFRM
Paul Moore03e1ad72008-04-12 19:07:52 -07001578 int (*xfrm_policy_alloc_security) (struct xfrm_sec_ctx **ctxp,
Venkat Yekkiralac1a856c2006-11-08 17:03:44 -06001579 struct xfrm_user_sec_ctx *sec_ctx);
Paul Moore03e1ad72008-04-12 19:07:52 -07001580 int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
1581 void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
1582 int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001583 int (*xfrm_state_alloc_security) (struct xfrm_state *x,
Venkat Yekkiralac1a856c2006-11-08 17:03:44 -06001584 struct xfrm_user_sec_ctx *sec_ctx,
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001585 u32 secid);
Trent Jaegerdf718372005-12-13 23:12:27 -08001586 void (*xfrm_state_free_security) (struct xfrm_state *x);
Catherine Zhangc8c05a82006-06-08 23:39:49 -07001587 int (*xfrm_state_delete_security) (struct xfrm_state *x);
Eric Paris7b41b172008-04-23 14:10:25 -04001588 int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1589 int (*xfrm_state_pol_flow_match) (struct xfrm_state *x,
1590 struct xfrm_policy *xp,
1591 struct flowi *fl);
1592 int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall);
Trent Jaegerdf718372005-12-13 23:12:27 -08001593#endif /* CONFIG_SECURITY_NETWORK_XFRM */
1594
David Howells29db9192005-10-30 15:02:44 -08001595 /* key management security hooks */
1596#ifdef CONFIG_KEYS
David Howellsd84f4f92008-11-14 10:39:23 +11001597 int (*key_alloc) (struct key *key, const struct cred *cred, unsigned long flags);
Eric Paris7b41b172008-04-23 14:10:25 -04001598 void (*key_free) (struct key *key);
1599 int (*key_permission) (key_ref_t key_ref,
David Howellsd84f4f92008-11-14 10:39:23 +11001600 const struct cred *cred,
Eric Paris7b41b172008-04-23 14:10:25 -04001601 key_perm_t perm);
David Howells70a5bb72008-04-29 01:01:26 -07001602 int (*key_getsecurity)(struct key *key, char **_buffer);
David Howells29db9192005-10-30 15:02:44 -08001603#endif /* CONFIG_KEYS */
1604
Ahmed S. Darwish03d37d22008-03-01 22:00:05 +02001605#ifdef CONFIG_AUDIT
Eric Paris7b41b172008-04-23 14:10:25 -04001606 int (*audit_rule_init) (u32 field, u32 op, char *rulestr, void **lsmrule);
1607 int (*audit_rule_known) (struct audit_krule *krule);
1608 int (*audit_rule_match) (u32 secid, u32 field, u32 op, void *lsmrule,
1609 struct audit_context *actx);
1610 void (*audit_rule_free) (void *lsmrule);
Ahmed S. Darwish03d37d22008-03-01 22:00:05 +02001611#endif /* CONFIG_AUDIT */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001612};
1613
Linus Torvalds1da177e2005-04-16 15:20:36 -07001614/* prototypes */
Eric Paris7b41b172008-04-23 14:10:25 -04001615extern int security_init(void);
Ahmed S. Darwish076c54c2008-03-06 18:09:10 +02001616extern int security_module_enable(struct security_operations *ops);
Eric Paris7b41b172008-04-23 14:10:25 -04001617extern int register_security(struct security_operations *ops);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001618
James Morris20510f22007-10-16 23:31:32 -07001619/* Security operations */
David Howells5cd9c582008-08-14 11:37:28 +01001620int security_ptrace_may_access(struct task_struct *child, unsigned int mode);
1621int security_ptrace_traceme(struct task_struct *parent);
James Morris20510f22007-10-16 23:31:32 -07001622int security_capget(struct task_struct *target,
Eric Paris7b41b172008-04-23 14:10:25 -04001623 kernel_cap_t *effective,
1624 kernel_cap_t *inheritable,
1625 kernel_cap_t *permitted);
David Howellsd84f4f92008-11-14 10:39:23 +11001626int security_capset(struct cred *new, const struct cred *old,
1627 const kernel_cap_t *effective,
1628 const kernel_cap_t *inheritable,
1629 const kernel_cap_t *permitted);
David Howells3699c532009-01-06 22:27:01 +00001630int security_capable(int cap);
1631int security_real_capable(struct task_struct *tsk, int cap);
1632int security_real_capable_noaudit(struct task_struct *tsk, int cap);
James Morris20510f22007-10-16 23:31:32 -07001633int security_acct(struct file *file);
1634int security_sysctl(struct ctl_table *table, int op);
1635int security_quotactl(int cmds, int type, int id, struct super_block *sb);
1636int security_quota_on(struct dentry *dentry);
1637int security_syslog(int type);
1638int security_settime(struct timespec *ts, struct timezone *tz);
1639int security_vm_enough_memory(long pages);
1640int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
Alan Cox731572d2008-10-29 14:01:20 -07001641int security_vm_enough_memory_kern(long pages);
David Howellsa6f76f22008-11-14 10:39:24 +11001642int security_bprm_set_creds(struct linux_binprm *bprm);
James Morris20510f22007-10-16 23:31:32 -07001643int security_bprm_check(struct linux_binprm *bprm);
David Howellsa6f76f22008-11-14 10:39:24 +11001644void security_bprm_committing_creds(struct linux_binprm *bprm);
1645void security_bprm_committed_creds(struct linux_binprm *bprm);
James Morris20510f22007-10-16 23:31:32 -07001646int security_bprm_secureexec(struct linux_binprm *bprm);
1647int security_sb_alloc(struct super_block *sb);
1648void security_sb_free(struct super_block *sb);
Eric Parise0007522008-03-05 10:31:54 -05001649int security_sb_copy_data(char *orig, char *copy);
James Morris12204e22008-12-19 10:44:42 +11001650int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
Eric Paris2069f452008-07-04 09:47:13 +10001651int security_sb_show_options(struct seq_file *m, struct super_block *sb);
James Morris20510f22007-10-16 23:31:32 -07001652int security_sb_statfs(struct dentry *dentry);
Al Virob5266eb2008-03-22 17:48:24 -04001653int security_sb_mount(char *dev_name, struct path *path,
Eric Paris7b41b172008-04-23 14:10:25 -04001654 char *type, unsigned long flags, void *data);
Al Virob5266eb2008-03-22 17:48:24 -04001655int security_sb_check_sb(struct vfsmount *mnt, struct path *path);
James Morris20510f22007-10-16 23:31:32 -07001656int security_sb_umount(struct vfsmount *mnt, int flags);
1657void security_sb_umount_close(struct vfsmount *mnt);
1658void security_sb_umount_busy(struct vfsmount *mnt);
1659void security_sb_post_remount(struct vfsmount *mnt, unsigned long flags, void *data);
Al Virob5266eb2008-03-22 17:48:24 -04001660void security_sb_post_addmount(struct vfsmount *mnt, struct path *mountpoint);
1661int security_sb_pivotroot(struct path *old_path, struct path *new_path);
1662void security_sb_post_pivotroot(struct path *old_path, struct path *new_path);
Eric Parise0007522008-03-05 10:31:54 -05001663int security_sb_set_mnt_opts(struct super_block *sb, struct security_mnt_opts *opts);
Eric Parisc9180a52007-11-30 13:00:35 -05001664void security_sb_clone_mnt_opts(const struct super_block *oldsb,
1665 struct super_block *newsb);
Eric Parise0007522008-03-05 10:31:54 -05001666int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
Eric Parisc9180a52007-11-30 13:00:35 -05001667
James Morris20510f22007-10-16 23:31:32 -07001668int security_inode_alloc(struct inode *inode);
1669void security_inode_free(struct inode *inode);
1670int security_inode_init_security(struct inode *inode, struct inode *dir,
1671 char **name, void **value, size_t *len);
1672int security_inode_create(struct inode *dir, struct dentry *dentry, int mode);
1673int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1674 struct dentry *new_dentry);
1675int security_inode_unlink(struct inode *dir, struct dentry *dentry);
1676int security_inode_symlink(struct inode *dir, struct dentry *dentry,
Eric Paris7b41b172008-04-23 14:10:25 -04001677 const char *old_name);
James Morris20510f22007-10-16 23:31:32 -07001678int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode);
1679int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
1680int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev);
1681int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
Eric Paris7b41b172008-04-23 14:10:25 -04001682 struct inode *new_dir, struct dentry *new_dentry);
James Morris20510f22007-10-16 23:31:32 -07001683int security_inode_readlink(struct dentry *dentry);
1684int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
Al Virob77b0642008-07-17 09:37:02 -04001685int security_inode_permission(struct inode *inode, int mask);
James Morris20510f22007-10-16 23:31:32 -07001686int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
1687int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
1688void security_inode_delete(struct inode *inode);
David Howells8f0cfa52008-04-29 00:59:41 -07001689int security_inode_setxattr(struct dentry *dentry, const char *name,
1690 const void *value, size_t size, int flags);
1691void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1692 const void *value, size_t size, int flags);
1693int security_inode_getxattr(struct dentry *dentry, const char *name);
James Morris20510f22007-10-16 23:31:32 -07001694int security_inode_listxattr(struct dentry *dentry);
David Howells8f0cfa52008-04-29 00:59:41 -07001695int security_inode_removexattr(struct dentry *dentry, const char *name);
Serge E. Hallynb5376772007-10-16 23:31:36 -07001696int security_inode_need_killpriv(struct dentry *dentry);
1697int security_inode_killpriv(struct dentry *dentry);
David P. Quigley42492592008-02-04 22:29:39 -08001698int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
James Morris20510f22007-10-16 23:31:32 -07001699int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1700int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02001701void security_inode_getsecid(const struct inode *inode, u32 *secid);
James Morris20510f22007-10-16 23:31:32 -07001702int security_file_permission(struct file *file, int mask);
1703int security_file_alloc(struct file *file);
1704void security_file_free(struct file *file);
1705int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
1706int security_file_mmap(struct file *file, unsigned long reqprot,
1707 unsigned long prot, unsigned long flags,
1708 unsigned long addr, unsigned long addr_only);
1709int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
Eric Paris7b41b172008-04-23 14:10:25 -04001710 unsigned long prot);
James Morris20510f22007-10-16 23:31:32 -07001711int security_file_lock(struct file *file, unsigned int cmd);
1712int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
1713int security_file_set_fowner(struct file *file);
1714int security_file_send_sigiotask(struct task_struct *tsk,
Eric Paris7b41b172008-04-23 14:10:25 -04001715 struct fown_struct *fown, int sig);
James Morris20510f22007-10-16 23:31:32 -07001716int security_file_receive(struct file *file);
David Howells745ca242008-11-14 10:39:22 +11001717int security_dentry_open(struct file *file, const struct cred *cred);
James Morris20510f22007-10-16 23:31:32 -07001718int security_task_create(unsigned long clone_flags);
David Howellsf1752ee2008-11-14 10:39:17 +11001719void security_cred_free(struct cred *cred);
David Howellsd84f4f92008-11-14 10:39:23 +11001720int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
1721void security_commit_creds(struct cred *new, const struct cred *old);
David Howells3a3b7ce2008-11-14 10:39:28 +11001722int security_kernel_act_as(struct cred *new, u32 secid);
1723int security_kernel_create_files_as(struct cred *new, struct inode *inode);
James Morris20510f22007-10-16 23:31:32 -07001724int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags);
David Howellsd84f4f92008-11-14 10:39:23 +11001725int security_task_fix_setuid(struct cred *new, const struct cred *old,
1726 int flags);
James Morris20510f22007-10-16 23:31:32 -07001727int security_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags);
1728int security_task_setpgid(struct task_struct *p, pid_t pgid);
1729int security_task_getpgid(struct task_struct *p);
1730int security_task_getsid(struct task_struct *p);
1731void security_task_getsecid(struct task_struct *p, u32 *secid);
1732int security_task_setgroups(struct group_info *group_info);
1733int security_task_setnice(struct task_struct *p, int nice);
1734int security_task_setioprio(struct task_struct *p, int ioprio);
1735int security_task_getioprio(struct task_struct *p);
1736int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim);
1737int security_task_setscheduler(struct task_struct *p,
1738 int policy, struct sched_param *lp);
1739int security_task_getscheduler(struct task_struct *p);
1740int security_task_movememory(struct task_struct *p);
1741int security_task_kill(struct task_struct *p, struct siginfo *info,
1742 int sig, u32 secid);
1743int security_task_wait(struct task_struct *p);
1744int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
David Howellsd84f4f92008-11-14 10:39:23 +11001745 unsigned long arg4, unsigned long arg5);
James Morris20510f22007-10-16 23:31:32 -07001746void security_task_to_inode(struct task_struct *p, struct inode *inode);
1747int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02001748void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
James Morris20510f22007-10-16 23:31:32 -07001749int security_msg_msg_alloc(struct msg_msg *msg);
1750void security_msg_msg_free(struct msg_msg *msg);
1751int security_msg_queue_alloc(struct msg_queue *msq);
1752void security_msg_queue_free(struct msg_queue *msq);
1753int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
1754int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
1755int security_msg_queue_msgsnd(struct msg_queue *msq,
Eric Paris7b41b172008-04-23 14:10:25 -04001756 struct msg_msg *msg, int msqflg);
James Morris20510f22007-10-16 23:31:32 -07001757int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
Eric Paris7b41b172008-04-23 14:10:25 -04001758 struct task_struct *target, long type, int mode);
James Morris20510f22007-10-16 23:31:32 -07001759int security_shm_alloc(struct shmid_kernel *shp);
1760void security_shm_free(struct shmid_kernel *shp);
1761int security_shm_associate(struct shmid_kernel *shp, int shmflg);
1762int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
1763int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
1764int security_sem_alloc(struct sem_array *sma);
1765void security_sem_free(struct sem_array *sma);
1766int security_sem_associate(struct sem_array *sma, int semflg);
1767int security_sem_semctl(struct sem_array *sma, int cmd);
1768int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1769 unsigned nsops, int alter);
Eric Paris7b41b172008-04-23 14:10:25 -04001770void security_d_instantiate(struct dentry *dentry, struct inode *inode);
James Morris20510f22007-10-16 23:31:32 -07001771int security_getprocattr(struct task_struct *p, char *name, char **value);
1772int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
1773int security_netlink_send(struct sock *sk, struct sk_buff *skb);
1774int security_netlink_recv(struct sk_buff *skb, int cap);
1775int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
David Howells7bf570d2008-04-29 20:52:51 +01001776int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
James Morris20510f22007-10-16 23:31:32 -07001777void security_release_secctx(char *secdata, u32 seclen);
1778
Linus Torvalds1da177e2005-04-16 15:20:36 -07001779#else /* CONFIG_SECURITY */
Eric Parise0007522008-03-05 10:31:54 -05001780struct security_mnt_opts {
1781};
1782
1783static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
1784{
1785}
1786
1787static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
1788{
1789}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001790
1791/*
1792 * This is the default capabilities functionality. Most of these functions
1793 * are just stubbed out, but a few must call the proper capable code.
1794 */
1795
1796static inline int security_init(void)
1797{
1798 return 0;
1799}
1800
David Howells5cd9c582008-08-14 11:37:28 +01001801static inline int security_ptrace_may_access(struct task_struct *child,
1802 unsigned int mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001803{
David Howells5cd9c582008-08-14 11:37:28 +01001804 return cap_ptrace_may_access(child, mode);
1805}
1806
Alexander Beregalov5e186b52008-08-17 05:34:20 +04001807static inline int security_ptrace_traceme(struct task_struct *parent)
David Howells5cd9c582008-08-14 11:37:28 +01001808{
1809 return cap_ptrace_traceme(parent);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001810}
1811
Eric Paris7b41b172008-04-23 14:10:25 -04001812static inline int security_capget(struct task_struct *target,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001813 kernel_cap_t *effective,
1814 kernel_cap_t *inheritable,
1815 kernel_cap_t *permitted)
1816{
Eric Paris7b41b172008-04-23 14:10:25 -04001817 return cap_capget(target, effective, inheritable, permitted);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001818}
1819
David Howellsd84f4f92008-11-14 10:39:23 +11001820static inline int security_capset(struct cred *new,
1821 const struct cred *old,
1822 const kernel_cap_t *effective,
1823 const kernel_cap_t *inheritable,
1824 const kernel_cap_t *permitted)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001825{
David Howellsd84f4f92008-11-14 10:39:23 +11001826 return cap_capset(new, old, effective, inheritable, permitted);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001827}
1828
David Howells3699c532009-01-06 22:27:01 +00001829static inline int security_capable(int cap)
Chris Wright12b59892006-03-25 03:07:41 -08001830{
David Howells3699c532009-01-06 22:27:01 +00001831 return cap_capable(current, current_cred(), cap, SECURITY_CAP_AUDIT);
Eric Paris06112162008-11-11 22:02:50 +11001832}
1833
David Howells3699c532009-01-06 22:27:01 +00001834static inline int security_real_capable(struct task_struct *tsk, int cap)
Eric Paris06112162008-11-11 22:02:50 +11001835{
David Howells3699c532009-01-06 22:27:01 +00001836 int ret;
1837
1838 rcu_read_lock();
1839 ret = cap_capable(tsk, __task_cred(tsk), cap, SECURITY_CAP_AUDIT);
1840 rcu_read_unlock();
1841 return ret;
1842}
1843
1844static inline
1845int security_real_capable_noaudit(struct task_struct *tsk, int cap)
1846{
1847 int ret;
1848
1849 rcu_read_lock();
1850 ret = cap_capable(tsk, __task_cred(tsk), cap,
1851 SECURITY_CAP_NOAUDIT);
1852 rcu_read_unlock();
1853 return ret;
Chris Wright12b59892006-03-25 03:07:41 -08001854}
1855
Eric Paris7b41b172008-04-23 14:10:25 -04001856static inline int security_acct(struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001857{
1858 return 0;
1859}
1860
1861static inline int security_sysctl(struct ctl_table *table, int op)
1862{
1863 return 0;
1864}
1865
Eric Paris7b41b172008-04-23 14:10:25 -04001866static inline int security_quotactl(int cmds, int type, int id,
1867 struct super_block *sb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001868{
1869 return 0;
1870}
1871
Eric Paris7b41b172008-04-23 14:10:25 -04001872static inline int security_quota_on(struct dentry *dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001873{
1874 return 0;
1875}
1876
1877static inline int security_syslog(int type)
1878{
1879 return cap_syslog(type);
1880}
1881
1882static inline int security_settime(struct timespec *ts, struct timezone *tz)
1883{
1884 return cap_settime(ts, tz);
1885}
1886
1887static inline int security_vm_enough_memory(long pages)
1888{
Junjiro R. Okajima1b79cd02008-12-02 10:31:46 -08001889 WARN_ON(current->mm == NULL);
Alan Cox731572d2008-10-29 14:01:20 -07001890 return cap_vm_enough_memory(current->mm, pages);
1891}
1892
Alan Cox34b4e4a2007-08-22 14:01:28 -07001893static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
1894{
Junjiro R. Okajima1b79cd02008-12-02 10:31:46 -08001895 WARN_ON(mm == NULL);
Alan Cox34b4e4a2007-08-22 14:01:28 -07001896 return cap_vm_enough_memory(mm, pages);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001897}
1898
Junjiro R. Okajima1b79cd02008-12-02 10:31:46 -08001899static inline int security_vm_enough_memory_kern(long pages)
1900{
1901 /* If current->mm is a kernel thread then we will pass NULL,
1902 for this specific case that is fine */
1903 return cap_vm_enough_memory(current->mm, pages);
1904}
1905
David Howellsa6f76f22008-11-14 10:39:24 +11001906static inline int security_bprm_set_creds(struct linux_binprm *bprm)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001907{
David Howellsa6f76f22008-11-14 10:39:24 +11001908 return cap_bprm_set_creds(bprm);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001909}
1910
Eric Paris7b41b172008-04-23 14:10:25 -04001911static inline int security_bprm_check(struct linux_binprm *bprm)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001912{
1913 return 0;
1914}
1915
David Howellsa6f76f22008-11-14 10:39:24 +11001916static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
1917{
1918}
1919
1920static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
1921{
1922}
1923
Eric Paris7b41b172008-04-23 14:10:25 -04001924static inline int security_bprm_secureexec(struct linux_binprm *bprm)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001925{
1926 return cap_bprm_secureexec(bprm);
1927}
1928
Eric Paris7b41b172008-04-23 14:10:25 -04001929static inline int security_sb_alloc(struct super_block *sb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001930{
1931 return 0;
1932}
1933
Eric Paris7b41b172008-04-23 14:10:25 -04001934static inline void security_sb_free(struct super_block *sb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001935{ }
1936
Eric Paris7b41b172008-04-23 14:10:25 -04001937static inline int security_sb_copy_data(char *orig, char *copy)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001938{
1939 return 0;
1940}
1941
James Morris12204e22008-12-19 10:44:42 +11001942static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001943{
1944 return 0;
1945}
1946
Eric Paris2069f452008-07-04 09:47:13 +10001947static inline int security_sb_show_options(struct seq_file *m,
1948 struct super_block *sb)
1949{
1950 return 0;
1951}
1952
Eric Paris7b41b172008-04-23 14:10:25 -04001953static inline int security_sb_statfs(struct dentry *dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001954{
1955 return 0;
1956}
1957
Eric Paris7b41b172008-04-23 14:10:25 -04001958static inline int security_sb_mount(char *dev_name, struct path *path,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001959 char *type, unsigned long flags,
1960 void *data)
1961{
1962 return 0;
1963}
1964
Eric Paris7b41b172008-04-23 14:10:25 -04001965static inline int security_sb_check_sb(struct vfsmount *mnt,
1966 struct path *path)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001967{
1968 return 0;
1969}
1970
Eric Paris7b41b172008-04-23 14:10:25 -04001971static inline int security_sb_umount(struct vfsmount *mnt, int flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001972{
1973 return 0;
1974}
1975
Eric Paris7b41b172008-04-23 14:10:25 -04001976static inline void security_sb_umount_close(struct vfsmount *mnt)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001977{ }
1978
Eric Paris7b41b172008-04-23 14:10:25 -04001979static inline void security_sb_umount_busy(struct vfsmount *mnt)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001980{ }
1981
Eric Paris7b41b172008-04-23 14:10:25 -04001982static inline void security_sb_post_remount(struct vfsmount *mnt,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001983 unsigned long flags, void *data)
1984{ }
1985
Eric Paris7b41b172008-04-23 14:10:25 -04001986static inline void security_sb_post_addmount(struct vfsmount *mnt,
1987 struct path *mountpoint)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001988{ }
1989
Eric Paris7b41b172008-04-23 14:10:25 -04001990static inline int security_sb_pivotroot(struct path *old_path,
1991 struct path *new_path)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001992{
1993 return 0;
1994}
1995
Eric Paris7b41b172008-04-23 14:10:25 -04001996static inline void security_sb_post_pivotroot(struct path *old_path,
1997 struct path *new_path)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001998{ }
Eric Parise0007522008-03-05 10:31:54 -05001999
2000static inline int security_sb_set_mnt_opts(struct super_block *sb,
2001 struct security_mnt_opts *opts)
2002{
2003 return 0;
2004}
2005
2006static inline void security_sb_clone_mnt_opts(const struct super_block *oldsb,
2007 struct super_block *newsb)
2008{ }
2009
2010static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
2011{
2012 return 0;
2013}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002014
Eric Paris7b41b172008-04-23 14:10:25 -04002015static inline int security_inode_alloc(struct inode *inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002016{
2017 return 0;
2018}
2019
Eric Paris7b41b172008-04-23 14:10:25 -04002020static inline void security_inode_free(struct inode *inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002021{ }
Stephen Smalley5e41ff92005-09-09 13:01:35 -07002022
Eric Paris7b41b172008-04-23 14:10:25 -04002023static inline int security_inode_init_security(struct inode *inode,
Stephen Smalley5e41ff92005-09-09 13:01:35 -07002024 struct inode *dir,
2025 char **name,
2026 void **value,
2027 size_t *len)
2028{
2029 return -EOPNOTSUPP;
2030}
Eric Paris7b41b172008-04-23 14:10:25 -04002031
2032static inline int security_inode_create(struct inode *dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002033 struct dentry *dentry,
2034 int mode)
2035{
2036 return 0;
2037}
2038
Eric Paris7b41b172008-04-23 14:10:25 -04002039static inline int security_inode_link(struct dentry *old_dentry,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002040 struct inode *dir,
2041 struct dentry *new_dentry)
2042{
2043 return 0;
2044}
2045
Eric Paris7b41b172008-04-23 14:10:25 -04002046static inline int security_inode_unlink(struct inode *dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002047 struct dentry *dentry)
2048{
2049 return 0;
2050}
2051
Eric Paris7b41b172008-04-23 14:10:25 -04002052static inline int security_inode_symlink(struct inode *dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002053 struct dentry *dentry,
2054 const char *old_name)
2055{
2056 return 0;
2057}
2058
Eric Paris7b41b172008-04-23 14:10:25 -04002059static inline int security_inode_mkdir(struct inode *dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002060 struct dentry *dentry,
2061 int mode)
2062{
2063 return 0;
2064}
2065
Eric Paris7b41b172008-04-23 14:10:25 -04002066static inline int security_inode_rmdir(struct inode *dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002067 struct dentry *dentry)
2068{
2069 return 0;
2070}
2071
Eric Paris7b41b172008-04-23 14:10:25 -04002072static inline int security_inode_mknod(struct inode *dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002073 struct dentry *dentry,
2074 int mode, dev_t dev)
2075{
2076 return 0;
2077}
2078
Eric Paris7b41b172008-04-23 14:10:25 -04002079static inline int security_inode_rename(struct inode *old_dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002080 struct dentry *old_dentry,
2081 struct inode *new_dir,
2082 struct dentry *new_dentry)
2083{
2084 return 0;
2085}
2086
Eric Paris7b41b172008-04-23 14:10:25 -04002087static inline int security_inode_readlink(struct dentry *dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002088{
2089 return 0;
2090}
2091
Eric Paris7b41b172008-04-23 14:10:25 -04002092static inline int security_inode_follow_link(struct dentry *dentry,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002093 struct nameidata *nd)
2094{
2095 return 0;
2096}
2097
Al Virob77b0642008-07-17 09:37:02 -04002098static inline int security_inode_permission(struct inode *inode, int mask)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002099{
2100 return 0;
2101}
2102
Eric Paris7b41b172008-04-23 14:10:25 -04002103static inline int security_inode_setattr(struct dentry *dentry,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002104 struct iattr *attr)
2105{
2106 return 0;
2107}
2108
Eric Paris7b41b172008-04-23 14:10:25 -04002109static inline int security_inode_getattr(struct vfsmount *mnt,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002110 struct dentry *dentry)
2111{
2112 return 0;
2113}
2114
Eric Paris7b41b172008-04-23 14:10:25 -04002115static inline void security_inode_delete(struct inode *inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002116{ }
2117
David Howells8f0cfa52008-04-29 00:59:41 -07002118static inline int security_inode_setxattr(struct dentry *dentry,
2119 const char *name, const void *value, size_t size, int flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002120{
2121 return cap_inode_setxattr(dentry, name, value, size, flags);
2122}
2123
David Howells8f0cfa52008-04-29 00:59:41 -07002124static inline void security_inode_post_setxattr(struct dentry *dentry,
2125 const char *name, const void *value, size_t size, int flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002126{ }
2127
David Howells8f0cfa52008-04-29 00:59:41 -07002128static inline int security_inode_getxattr(struct dentry *dentry,
2129 const char *name)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002130{
2131 return 0;
2132}
2133
Eric Paris7b41b172008-04-23 14:10:25 -04002134static inline int security_inode_listxattr(struct dentry *dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002135{
2136 return 0;
2137}
2138
David Howells8f0cfa52008-04-29 00:59:41 -07002139static inline int security_inode_removexattr(struct dentry *dentry,
2140 const char *name)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002141{
2142 return cap_inode_removexattr(dentry, name);
2143}
2144
Serge E. Hallynb5376772007-10-16 23:31:36 -07002145static inline int security_inode_need_killpriv(struct dentry *dentry)
2146{
2147 return cap_inode_need_killpriv(dentry);
2148}
2149
2150static inline int security_inode_killpriv(struct dentry *dentry)
2151{
2152 return cap_inode_killpriv(dentry);
2153}
2154
David P. Quigley42492592008-02-04 22:29:39 -08002155static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002156{
2157 return -EOPNOTSUPP;
2158}
2159
2160static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
2161{
2162 return -EOPNOTSUPP;
2163}
2164
2165static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
2166{
2167 return 0;
2168}
2169
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02002170static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
2171{
2172 *secid = 0;
2173}
2174
Eric Paris7b41b172008-04-23 14:10:25 -04002175static inline int security_file_permission(struct file *file, int mask)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002176{
2177 return 0;
2178}
2179
Eric Paris7b41b172008-04-23 14:10:25 -04002180static inline int security_file_alloc(struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002181{
2182 return 0;
2183}
2184
Eric Paris7b41b172008-04-23 14:10:25 -04002185static inline void security_file_free(struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002186{ }
2187
Eric Paris7b41b172008-04-23 14:10:25 -04002188static inline int security_file_ioctl(struct file *file, unsigned int cmd,
2189 unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002190{
2191 return 0;
2192}
2193
Eric Paris7b41b172008-04-23 14:10:25 -04002194static inline int security_file_mmap(struct file *file, unsigned long reqprot,
2195 unsigned long prot,
2196 unsigned long flags,
2197 unsigned long addr,
2198 unsigned long addr_only)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002199{
Christoph Lametere0a94c22009-06-03 16:04:31 -04002200 if ((addr < mmap_min_addr) && !capable(CAP_SYS_RAWIO))
2201 return -EACCES;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002202 return 0;
2203}
2204
Eric Paris7b41b172008-04-23 14:10:25 -04002205static inline int security_file_mprotect(struct vm_area_struct *vma,
2206 unsigned long reqprot,
2207 unsigned long prot)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002208{
2209 return 0;
2210}
2211
Eric Paris7b41b172008-04-23 14:10:25 -04002212static inline int security_file_lock(struct file *file, unsigned int cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002213{
2214 return 0;
2215}
2216
Eric Paris7b41b172008-04-23 14:10:25 -04002217static inline int security_file_fcntl(struct file *file, unsigned int cmd,
2218 unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002219{
2220 return 0;
2221}
2222
Eric Paris7b41b172008-04-23 14:10:25 -04002223static inline int security_file_set_fowner(struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002224{
2225 return 0;
2226}
2227
Eric Paris7b41b172008-04-23 14:10:25 -04002228static inline int security_file_send_sigiotask(struct task_struct *tsk,
2229 struct fown_struct *fown,
2230 int sig)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002231{
2232 return 0;
2233}
2234
Eric Paris7b41b172008-04-23 14:10:25 -04002235static inline int security_file_receive(struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002236{
2237 return 0;
2238}
2239
David Howells745ca242008-11-14 10:39:22 +11002240static inline int security_dentry_open(struct file *file,
2241 const struct cred *cred)
Yuichi Nakamura788e7dd2007-09-14 09:27:07 +09002242{
2243 return 0;
2244}
2245
Eric Paris7b41b172008-04-23 14:10:25 -04002246static inline int security_task_create(unsigned long clone_flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002247{
2248 return 0;
2249}
2250
David Howellsd84f4f92008-11-14 10:39:23 +11002251static inline void security_cred_free(struct cred *cred)
2252{ }
2253
2254static inline int security_prepare_creds(struct cred *new,
2255 const struct cred *old,
2256 gfp_t gfp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002257{
2258 return 0;
2259}
2260
David Howellsd84f4f92008-11-14 10:39:23 +11002261static inline void security_commit_creds(struct cred *new,
2262 const struct cred *old)
2263{
2264}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002265
David Howells3a3b7ce2008-11-14 10:39:28 +11002266static inline int security_kernel_act_as(struct cred *cred, u32 secid)
2267{
2268 return 0;
2269}
2270
2271static inline int security_kernel_create_files_as(struct cred *cred,
2272 struct inode *inode)
2273{
2274 return 0;
2275}
2276
Eric Paris7b41b172008-04-23 14:10:25 -04002277static inline int security_task_setuid(uid_t id0, uid_t id1, uid_t id2,
2278 int flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002279{
2280 return 0;
2281}
2282
David Howellsd84f4f92008-11-14 10:39:23 +11002283static inline int security_task_fix_setuid(struct cred *new,
2284 const struct cred *old,
2285 int flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002286{
David Howellsd84f4f92008-11-14 10:39:23 +11002287 return cap_task_fix_setuid(new, old, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002288}
2289
Eric Paris7b41b172008-04-23 14:10:25 -04002290static inline int security_task_setgid(gid_t id0, gid_t id1, gid_t id2,
2291 int flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002292{
2293 return 0;
2294}
2295
Eric Paris7b41b172008-04-23 14:10:25 -04002296static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002297{
2298 return 0;
2299}
2300
Eric Paris7b41b172008-04-23 14:10:25 -04002301static inline int security_task_getpgid(struct task_struct *p)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002302{
2303 return 0;
2304}
2305
Eric Paris7b41b172008-04-23 14:10:25 -04002306static inline int security_task_getsid(struct task_struct *p)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002307{
2308 return 0;
2309}
2310
Eric Paris7b41b172008-04-23 14:10:25 -04002311static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02002312{
2313 *secid = 0;
2314}
David Quigleyf9008e42006-06-30 01:55:46 -07002315
Eric Paris7b41b172008-04-23 14:10:25 -04002316static inline int security_task_setgroups(struct group_info *group_info)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002317{
2318 return 0;
2319}
2320
Eric Paris7b41b172008-04-23 14:10:25 -04002321static inline int security_task_setnice(struct task_struct *p, int nice)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002322{
Serge E. Hallynb5376772007-10-16 23:31:36 -07002323 return cap_task_setnice(p, nice);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002324}
2325
Eric Paris7b41b172008-04-23 14:10:25 -04002326static inline int security_task_setioprio(struct task_struct *p, int ioprio)
James Morris03e68062006-06-23 02:03:58 -07002327{
Serge E. Hallynb5376772007-10-16 23:31:36 -07002328 return cap_task_setioprio(p, ioprio);
James Morris03e68062006-06-23 02:03:58 -07002329}
2330
Eric Paris7b41b172008-04-23 14:10:25 -04002331static inline int security_task_getioprio(struct task_struct *p)
David Quigleya1836a42006-06-30 01:55:49 -07002332{
2333 return 0;
2334}
2335
Eric Paris7b41b172008-04-23 14:10:25 -04002336static inline int security_task_setrlimit(unsigned int resource,
2337 struct rlimit *new_rlim)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002338{
2339 return 0;
2340}
2341
Eric Paris7b41b172008-04-23 14:10:25 -04002342static inline int security_task_setscheduler(struct task_struct *p,
2343 int policy,
2344 struct sched_param *lp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002345{
Serge E. Hallynb5376772007-10-16 23:31:36 -07002346 return cap_task_setscheduler(p, policy, lp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002347}
2348
Eric Paris7b41b172008-04-23 14:10:25 -04002349static inline int security_task_getscheduler(struct task_struct *p)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002350{
2351 return 0;
2352}
2353
Eric Paris7b41b172008-04-23 14:10:25 -04002354static inline int security_task_movememory(struct task_struct *p)
David Quigley35601542006-06-23 02:04:01 -07002355{
2356 return 0;
2357}
2358
Eric Paris7b41b172008-04-23 14:10:25 -04002359static inline int security_task_kill(struct task_struct *p,
2360 struct siginfo *info, int sig,
2361 u32 secid)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002362{
Serge Hallynaedb60a2008-02-29 15:14:57 +00002363 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002364}
2365
Eric Paris7b41b172008-04-23 14:10:25 -04002366static inline int security_task_wait(struct task_struct *p)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002367{
2368 return 0;
2369}
2370
Eric Paris7b41b172008-04-23 14:10:25 -04002371static inline int security_task_prctl(int option, unsigned long arg2,
2372 unsigned long arg3,
2373 unsigned long arg4,
David Howellsd84f4f92008-11-14 10:39:23 +11002374 unsigned long arg5)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002375{
David Howellsd84f4f92008-11-14 10:39:23 +11002376 return cap_task_prctl(option, arg2, arg3, arg3, arg5);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002377}
2378
2379static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
2380{ }
2381
Eric Paris7b41b172008-04-23 14:10:25 -04002382static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
2383 short flag)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002384{
2385 return 0;
2386}
2387
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02002388static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
2389{
2390 *secid = 0;
2391}
2392
Eric Paris7b41b172008-04-23 14:10:25 -04002393static inline int security_msg_msg_alloc(struct msg_msg *msg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002394{
2395 return 0;
2396}
2397
Eric Paris7b41b172008-04-23 14:10:25 -04002398static inline void security_msg_msg_free(struct msg_msg *msg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002399{ }
2400
Eric Paris7b41b172008-04-23 14:10:25 -04002401static inline int security_msg_queue_alloc(struct msg_queue *msq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002402{
2403 return 0;
2404}
2405
Eric Paris7b41b172008-04-23 14:10:25 -04002406static inline void security_msg_queue_free(struct msg_queue *msq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002407{ }
2408
Eric Paris7b41b172008-04-23 14:10:25 -04002409static inline int security_msg_queue_associate(struct msg_queue *msq,
2410 int msqflg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002411{
2412 return 0;
2413}
2414
Eric Paris7b41b172008-04-23 14:10:25 -04002415static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002416{
2417 return 0;
2418}
2419
Eric Paris7b41b172008-04-23 14:10:25 -04002420static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
2421 struct msg_msg *msg, int msqflg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002422{
2423 return 0;
2424}
2425
Eric Paris7b41b172008-04-23 14:10:25 -04002426static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
2427 struct msg_msg *msg,
2428 struct task_struct *target,
2429 long type, int mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002430{
2431 return 0;
2432}
2433
Eric Paris7b41b172008-04-23 14:10:25 -04002434static inline int security_shm_alloc(struct shmid_kernel *shp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002435{
2436 return 0;
2437}
2438
Eric Paris7b41b172008-04-23 14:10:25 -04002439static inline void security_shm_free(struct shmid_kernel *shp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002440{ }
2441
Eric Paris7b41b172008-04-23 14:10:25 -04002442static inline int security_shm_associate(struct shmid_kernel *shp,
2443 int shmflg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002444{
2445 return 0;
2446}
2447
Eric Paris7b41b172008-04-23 14:10:25 -04002448static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002449{
2450 return 0;
2451}
2452
Eric Paris7b41b172008-04-23 14:10:25 -04002453static inline int security_shm_shmat(struct shmid_kernel *shp,
2454 char __user *shmaddr, int shmflg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002455{
2456 return 0;
2457}
2458
Eric Paris7b41b172008-04-23 14:10:25 -04002459static inline int security_sem_alloc(struct sem_array *sma)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002460{
2461 return 0;
2462}
2463
Eric Paris7b41b172008-04-23 14:10:25 -04002464static inline void security_sem_free(struct sem_array *sma)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002465{ }
2466
Eric Paris7b41b172008-04-23 14:10:25 -04002467static inline int security_sem_associate(struct sem_array *sma, int semflg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002468{
2469 return 0;
2470}
2471
Eric Paris7b41b172008-04-23 14:10:25 -04002472static inline int security_sem_semctl(struct sem_array *sma, int cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002473{
2474 return 0;
2475}
2476
Eric Paris7b41b172008-04-23 14:10:25 -04002477static inline int security_sem_semop(struct sem_array *sma,
2478 struct sembuf *sops, unsigned nsops,
2479 int alter)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002480{
2481 return 0;
2482}
2483
Eric Paris7b41b172008-04-23 14:10:25 -04002484static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002485{ }
2486
Al Viro04ff9702007-03-12 16:17:58 +00002487static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002488{
2489 return -EINVAL;
2490}
2491
2492static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2493{
2494 return -EINVAL;
2495}
2496
Eric Paris7b41b172008-04-23 14:10:25 -04002497static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002498{
Eric Paris7b41b172008-04-23 14:10:25 -04002499 return cap_netlink_send(sk, skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002500}
2501
Eric Paris7b41b172008-04-23 14:10:25 -04002502static inline int security_netlink_recv(struct sk_buff *skb, int cap)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002503{
Eric Paris7b41b172008-04-23 14:10:25 -04002504 return cap_netlink_recv(skb, cap);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002505}
2506
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07002507static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2508{
2509 return -EOPNOTSUPP;
2510}
2511
David Howells7bf570d2008-04-29 20:52:51 +01002512static inline int security_secctx_to_secid(const char *secdata,
David Howells63cb3442008-01-15 23:47:35 +00002513 u32 seclen,
2514 u32 *secid)
2515{
2516 return -EOPNOTSUPP;
2517}
2518
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07002519static inline void security_release_secctx(char *secdata, u32 seclen)
2520{
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07002521}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002522#endif /* CONFIG_SECURITY */
2523
2524#ifdef CONFIG_SECURITY_NETWORK
Linus Torvalds1da177e2005-04-16 15:20:36 -07002525
James Morris20510f22007-10-16 23:31:32 -07002526int security_unix_stream_connect(struct socket *sock, struct socket *other,
2527 struct sock *newsk);
2528int security_unix_may_send(struct socket *sock, struct socket *other);
2529int security_socket_create(int family, int type, int protocol, int kern);
2530int security_socket_post_create(struct socket *sock, int family,
2531 int type, int protocol, int kern);
2532int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
2533int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
2534int security_socket_listen(struct socket *sock, int backlog);
2535int security_socket_accept(struct socket *sock, struct socket *newsock);
James Morris20510f22007-10-16 23:31:32 -07002536int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
2537int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2538 int size, int flags);
2539int security_socket_getsockname(struct socket *sock);
2540int security_socket_getpeername(struct socket *sock);
2541int security_socket_getsockopt(struct socket *sock, int level, int optname);
2542int security_socket_setsockopt(struct socket *sock, int level, int optname);
2543int security_socket_shutdown(struct socket *sock, int how);
2544int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
2545int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2546 int __user *optlen, unsigned len);
2547int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
2548int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
2549void security_sk_free(struct sock *sk);
2550void security_sk_clone(const struct sock *sk, struct sock *newsk);
2551void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
2552void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
2553void security_sock_graft(struct sock*sk, struct socket *parent);
2554int security_inet_conn_request(struct sock *sk,
2555 struct sk_buff *skb, struct request_sock *req);
2556void security_inet_csk_clone(struct sock *newsk,
2557 const struct request_sock *req);
2558void security_inet_conn_established(struct sock *sk,
2559 struct sk_buff *skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002560
Linus Torvalds1da177e2005-04-16 15:20:36 -07002561#else /* CONFIG_SECURITY_NETWORK */
Eric Paris7b41b172008-04-23 14:10:25 -04002562static inline int security_unix_stream_connect(struct socket *sock,
2563 struct socket *other,
2564 struct sock *newsk)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002565{
2566 return 0;
2567}
2568
Eric Paris7b41b172008-04-23 14:10:25 -04002569static inline int security_unix_may_send(struct socket *sock,
2570 struct socket *other)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002571{
2572 return 0;
2573}
2574
Eric Paris7b41b172008-04-23 14:10:25 -04002575static inline int security_socket_create(int family, int type,
2576 int protocol, int kern)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002577{
2578 return 0;
2579}
2580
Eric Paris7b41b172008-04-23 14:10:25 -04002581static inline int security_socket_post_create(struct socket *sock,
Venkat Yekkirala7420ed22006-08-04 23:17:57 -07002582 int family,
2583 int type,
2584 int protocol, int kern)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002585{
Venkat Yekkirala7420ed22006-08-04 23:17:57 -07002586 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002587}
2588
Eric Paris7b41b172008-04-23 14:10:25 -04002589static inline int security_socket_bind(struct socket *sock,
2590 struct sockaddr *address,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002591 int addrlen)
2592{
2593 return 0;
2594}
2595
Eric Paris7b41b172008-04-23 14:10:25 -04002596static inline int security_socket_connect(struct socket *sock,
2597 struct sockaddr *address,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002598 int addrlen)
2599{
2600 return 0;
2601}
2602
Eric Paris7b41b172008-04-23 14:10:25 -04002603static inline int security_socket_listen(struct socket *sock, int backlog)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002604{
2605 return 0;
2606}
2607
Eric Paris7b41b172008-04-23 14:10:25 -04002608static inline int security_socket_accept(struct socket *sock,
2609 struct socket *newsock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002610{
2611 return 0;
2612}
2613
Eric Paris7b41b172008-04-23 14:10:25 -04002614static inline int security_socket_sendmsg(struct socket *sock,
2615 struct msghdr *msg, int size)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002616{
2617 return 0;
2618}
2619
Eric Paris7b41b172008-04-23 14:10:25 -04002620static inline int security_socket_recvmsg(struct socket *sock,
2621 struct msghdr *msg, int size,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002622 int flags)
2623{
2624 return 0;
2625}
2626
Eric Paris7b41b172008-04-23 14:10:25 -04002627static inline int security_socket_getsockname(struct socket *sock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002628{
2629 return 0;
2630}
2631
Eric Paris7b41b172008-04-23 14:10:25 -04002632static inline int security_socket_getpeername(struct socket *sock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002633{
2634 return 0;
2635}
2636
Eric Paris7b41b172008-04-23 14:10:25 -04002637static inline int security_socket_getsockopt(struct socket *sock,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002638 int level, int optname)
2639{
2640 return 0;
2641}
2642
Eric Paris7b41b172008-04-23 14:10:25 -04002643static inline int security_socket_setsockopt(struct socket *sock,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002644 int level, int optname)
2645{
2646 return 0;
2647}
2648
Eric Paris7b41b172008-04-23 14:10:25 -04002649static inline int security_socket_shutdown(struct socket *sock, int how)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002650{
2651 return 0;
2652}
Eric Paris7b41b172008-04-23 14:10:25 -04002653static inline int security_sock_rcv_skb(struct sock *sk,
2654 struct sk_buff *skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002655{
2656 return 0;
2657}
2658
Catherine Zhang2c7946a2006-03-20 22:41:23 -08002659static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2660 int __user *optlen, unsigned len)
2661{
2662 return -ENOPROTOOPT;
2663}
2664
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07002665static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002666{
2667 return -ENOPROTOOPT;
2668}
2669
Al Virodd0fc662005-10-07 07:46:04 +01002670static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002671{
2672 return 0;
2673}
2674
2675static inline void security_sk_free(struct sock *sk)
2676{
2677}
Trent Jaegerdf718372005-12-13 23:12:27 -08002678
Venkat Yekkirala892c1412006-08-04 23:08:56 -07002679static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
2680{
2681}
2682
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07002683static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
Trent Jaegerdf718372005-12-13 23:12:27 -08002684{
Trent Jaegerdf718372005-12-13 23:12:27 -08002685}
Venkat Yekkirala4237c752006-07-24 23:32:50 -07002686
2687static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2688{
2689}
2690
Eric Paris7b41b172008-04-23 14:10:25 -04002691static inline void security_sock_graft(struct sock *sk, struct socket *parent)
Venkat Yekkirala4237c752006-07-24 23:32:50 -07002692{
2693}
2694
2695static inline int security_inet_conn_request(struct sock *sk,
2696 struct sk_buff *skb, struct request_sock *req)
2697{
2698 return 0;
2699}
2700
2701static inline void security_inet_csk_clone(struct sock *newsk,
2702 const struct request_sock *req)
2703{
2704}
Venkat Yekkirala6b877692006-11-08 17:04:09 -06002705
2706static inline void security_inet_conn_established(struct sock *sk,
2707 struct sk_buff *skb)
2708{
2709}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002710#endif /* CONFIG_SECURITY_NETWORK */
2711
Trent Jaegerdf718372005-12-13 23:12:27 -08002712#ifdef CONFIG_SECURITY_NETWORK_XFRM
Venkat Yekkiralacb969f02006-07-24 23:32:20 -07002713
Paul Moore03e1ad72008-04-12 19:07:52 -07002714int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx);
2715int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
2716void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
2717int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
James Morris20510f22007-10-16 23:31:32 -07002718int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
2719int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2720 struct xfrm_sec_ctx *polsec, u32 secid);
2721int security_xfrm_state_delete(struct xfrm_state *x);
2722void security_xfrm_state_free(struct xfrm_state *x);
Paul Moore03e1ad72008-04-12 19:07:52 -07002723int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
James Morris20510f22007-10-16 23:31:32 -07002724int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2725 struct xfrm_policy *xp, struct flowi *fl);
2726int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
2727void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
Trent Jaegerdf718372005-12-13 23:12:27 -08002728
Trent Jaegerdf718372005-12-13 23:12:27 -08002729#else /* CONFIG_SECURITY_NETWORK_XFRM */
James Morris20510f22007-10-16 23:31:32 -07002730
Paul Moore03e1ad72008-04-12 19:07:52 -07002731static 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 -08002732{
2733 return 0;
2734}
2735
Paul Moore03e1ad72008-04-12 19:07:52 -07002736static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
Trent Jaegerdf718372005-12-13 23:12:27 -08002737{
2738 return 0;
2739}
2740
Paul Moore03e1ad72008-04-12 19:07:52 -07002741static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
Trent Jaegerdf718372005-12-13 23:12:27 -08002742{
2743}
2744
Paul Moore03e1ad72008-04-12 19:07:52 -07002745static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
Catherine Zhangc8c05a82006-06-08 23:39:49 -07002746{
2747 return 0;
2748}
2749
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07002750static inline int security_xfrm_state_alloc(struct xfrm_state *x,
2751 struct xfrm_user_sec_ctx *sec_ctx)
2752{
2753 return 0;
2754}
2755
2756static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2757 struct xfrm_sec_ctx *polsec, u32 secid)
Trent Jaegerdf718372005-12-13 23:12:27 -08002758{
2759 return 0;
2760}
2761
2762static inline void security_xfrm_state_free(struct xfrm_state *x)
2763{
2764}
2765
David S. Miller6f68dc32006-06-08 23:58:52 -07002766static inline int security_xfrm_state_delete(struct xfrm_state *x)
Catherine Zhangc8c05a82006-06-08 23:39:49 -07002767{
2768 return 0;
2769}
2770
Paul Moore03e1ad72008-04-12 19:07:52 -07002771static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
Trent Jaegerdf718372005-12-13 23:12:27 -08002772{
2773 return 0;
2774}
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07002775
2776static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2777 struct xfrm_policy *xp, struct flowi *fl)
2778{
2779 return 1;
2780}
2781
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07002782static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07002783{
2784 return 0;
2785}
2786
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07002787static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2788{
2789}
2790
Trent Jaegerdf718372005-12-13 23:12:27 -08002791#endif /* CONFIG_SECURITY_NETWORK_XFRM */
2792
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09002793#ifdef CONFIG_SECURITY_PATH
2794int security_path_unlink(struct path *dir, struct dentry *dentry);
2795int security_path_mkdir(struct path *dir, struct dentry *dentry, int mode);
2796int security_path_rmdir(struct path *dir, struct dentry *dentry);
2797int security_path_mknod(struct path *dir, struct dentry *dentry, int mode,
2798 unsigned int dev);
2799int security_path_truncate(struct path *path, loff_t length,
2800 unsigned int time_attrs);
2801int security_path_symlink(struct path *dir, struct dentry *dentry,
2802 const char *old_name);
2803int security_path_link(struct dentry *old_dentry, struct path *new_dir,
2804 struct dentry *new_dentry);
2805int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
2806 struct path *new_dir, struct dentry *new_dentry);
2807#else /* CONFIG_SECURITY_PATH */
2808static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
2809{
2810 return 0;
2811}
2812
2813static inline int security_path_mkdir(struct path *dir, struct dentry *dentry,
2814 int mode)
2815{
2816 return 0;
2817}
2818
2819static inline int security_path_rmdir(struct path *dir, struct dentry *dentry)
2820{
2821 return 0;
2822}
2823
2824static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
2825 int mode, unsigned int dev)
2826{
2827 return 0;
2828}
2829
2830static inline int security_path_truncate(struct path *path, loff_t length,
2831 unsigned int time_attrs)
2832{
2833 return 0;
2834}
2835
2836static inline int security_path_symlink(struct path *dir, struct dentry *dentry,
2837 const char *old_name)
2838{
2839 return 0;
2840}
2841
2842static inline int security_path_link(struct dentry *old_dentry,
2843 struct path *new_dir,
2844 struct dentry *new_dentry)
2845{
2846 return 0;
2847}
2848
2849static inline int security_path_rename(struct path *old_dir,
2850 struct dentry *old_dentry,
2851 struct path *new_dir,
2852 struct dentry *new_dentry)
2853{
2854 return 0;
2855}
2856#endif /* CONFIG_SECURITY_PATH */
2857
David Howells29db9192005-10-30 15:02:44 -08002858#ifdef CONFIG_KEYS
2859#ifdef CONFIG_SECURITY
David Howells29db9192005-10-30 15:02:44 -08002860
David Howellsd84f4f92008-11-14 10:39:23 +11002861int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
James Morris20510f22007-10-16 23:31:32 -07002862void security_key_free(struct key *key);
2863int security_key_permission(key_ref_t key_ref,
David Howellsd84f4f92008-11-14 10:39:23 +11002864 const struct cred *cred, key_perm_t perm);
David Howells70a5bb72008-04-29 01:01:26 -07002865int security_key_getsecurity(struct key *key, char **_buffer);
David Howells29db9192005-10-30 15:02:44 -08002866
2867#else
2868
Michael LeMayd7200242006-06-22 14:47:17 -07002869static inline int security_key_alloc(struct key *key,
David Howellsd84f4f92008-11-14 10:39:23 +11002870 const struct cred *cred,
David Howells7e047ef2006-06-26 00:24:50 -07002871 unsigned long flags)
David Howells29db9192005-10-30 15:02:44 -08002872{
2873 return 0;
2874}
2875
2876static inline void security_key_free(struct key *key)
2877{
2878}
2879
2880static inline int security_key_permission(key_ref_t key_ref,
David Howellsd84f4f92008-11-14 10:39:23 +11002881 const struct cred *cred,
David Howells29db9192005-10-30 15:02:44 -08002882 key_perm_t perm)
2883{
2884 return 0;
2885}
2886
David Howells70a5bb72008-04-29 01:01:26 -07002887static inline int security_key_getsecurity(struct key *key, char **_buffer)
2888{
2889 *_buffer = NULL;
2890 return 0;
2891}
2892
David Howells29db9192005-10-30 15:02:44 -08002893#endif
2894#endif /* CONFIG_KEYS */
2895
Ahmed S. Darwish03d37d22008-03-01 22:00:05 +02002896#ifdef CONFIG_AUDIT
2897#ifdef CONFIG_SECURITY
2898int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
2899int security_audit_rule_known(struct audit_krule *krule);
2900int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
2901 struct audit_context *actx);
2902void security_audit_rule_free(void *lsmrule);
2903
2904#else
2905
2906static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
2907 void **lsmrule)
2908{
2909 return 0;
2910}
2911
2912static inline int security_audit_rule_known(struct audit_krule *krule)
2913{
2914 return 0;
2915}
2916
2917static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
2918 void *lsmrule, struct audit_context *actx)
2919{
2920 return 0;
2921}
2922
2923static inline void security_audit_rule_free(void *lsmrule)
2924{ }
2925
2926#endif /* CONFIG_SECURITY */
2927#endif /* CONFIG_AUDIT */
2928
Eric Parisda318942008-08-22 11:35:57 -04002929#ifdef CONFIG_SECURITYFS
2930
2931extern struct dentry *securityfs_create_file(const char *name, mode_t mode,
2932 struct dentry *parent, void *data,
2933 const struct file_operations *fops);
2934extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
2935extern void securityfs_remove(struct dentry *dentry);
2936
2937#else /* CONFIG_SECURITYFS */
2938
2939static inline struct dentry *securityfs_create_dir(const char *name,
2940 struct dentry *parent)
2941{
2942 return ERR_PTR(-ENODEV);
2943}
2944
2945static inline struct dentry *securityfs_create_file(const char *name,
2946 mode_t mode,
2947 struct dentry *parent,
2948 void *data,
2949 const struct file_operations *fops)
2950{
2951 return ERR_PTR(-ENODEV);
2952}
2953
2954static inline void securityfs_remove(struct dentry *dentry)
2955{}
2956
2957#endif
2958
Pekka Enberg3d544f42009-03-24 11:59:23 +02002959#ifdef CONFIG_SECURITY
2960
2961static inline char *alloc_secdata(void)
2962{
2963 return (char *)get_zeroed_page(GFP_KERNEL);
2964}
2965
2966static inline void free_secdata(void *secdata)
2967{
2968 free_page((unsigned long)secdata);
2969}
2970
2971#else
2972
2973static inline char *alloc_secdata(void)
2974{
2975 return (char *)1;
2976}
2977
2978static inline void free_secdata(void *secdata)
2979{ }
2980#endif /* CONFIG_SECURITY */
2981
Linus Torvalds1da177e2005-04-16 15:20:36 -07002982#endif /* ! __LINUX_SECURITY_H */
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