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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>
Eric Parisc4ec54b2009-12-17 21:24:34 -050026#include <linux/fsnotify.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070027#include <linux/binfmts.h>
Eric Paris2a7dba32011-02-01 11:05:39 -050028#include <linux/dcache.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070029#include <linux/signal.h>
30#include <linux/resource.h>
31#include <linux/sem.h>
32#include <linux/shm.h>
Eric Parisa2551df2009-07-31 12:54:11 -040033#include <linux/mm.h> /* PAGE_ALIGN */
Linus Torvalds1da177e2005-04-16 15:20:36 -070034#include <linux/msg.h>
35#include <linux/sched.h>
David Howells29db9192005-10-30 15:02:44 -080036#include <linux/key.h>
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -070037#include <linux/xfrm.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090038#include <linux/slab.h>
Mimi Zohar9d8f13b2011-06-06 15:29:25 -040039#include <linux/xattr.h>
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -070040#include <net/flow.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070041
Ahmed S. Darwish076c54c2008-03-06 18:09:10 +020042/* Maximum number of letters for an LSM name string */
43#define SECURITY_NAME_MAX 10
44
Eric Paris06112162008-11-11 22:02:50 +110045/* If capable should audit the security request */
46#define SECURITY_CAP_NOAUDIT 0
47#define SECURITY_CAP_AUDIT 1
48
Linus Torvalds1da177e2005-04-16 15:20:36 -070049struct ctl_table;
Ahmed S. Darwish03d37d22008-03-01 22:00:05 +020050struct audit_krule;
Serge E. Hallyn34867402011-03-23 16:43:17 -070051struct user_namespace;
Linus Torvalds1da177e2005-04-16 15:20:36 -070052
53/*
54 * These functions are in security/capability.c and are used
55 * as the default capabilities functions
56 */
David Howells3699c532009-01-06 22:27:01 +000057extern int cap_capable(struct task_struct *tsk, const struct cred *cred,
Serge E. Hallyn34867402011-03-23 16:43:17 -070058 struct user_namespace *ns, int cap, int audit);
Richard Cochran1e6d7672011-02-01 13:50:58 +000059extern int cap_settime(const struct timespec *ts, const struct timezone *tz);
Ingo Molnar9e488582009-05-07 19:26:19 +100060extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
David Howells5cd9c582008-08-14 11:37:28 +010061extern int cap_ptrace_traceme(struct task_struct *parent);
Eric Paris7b41b172008-04-23 14:10:25 -040062extern 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 +110063extern int cap_capset(struct cred *new, const struct cred *old,
64 const kernel_cap_t *effective,
65 const kernel_cap_t *inheritable,
66 const kernel_cap_t *permitted);
David Howellsa6f76f22008-11-14 10:39:24 +110067extern int cap_bprm_set_creds(struct linux_binprm *bprm);
Linus Torvalds1da177e2005-04-16 15:20:36 -070068extern int cap_bprm_secureexec(struct linux_binprm *bprm);
David Howells8f0cfa52008-04-29 00:59:41 -070069extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
70 const void *value, size_t size, int flags);
71extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
Serge E. Hallynb5376772007-10-16 23:31:36 -070072extern int cap_inode_need_killpriv(struct dentry *dentry);
73extern int cap_inode_killpriv(struct dentry *dentry);
Eric Paris7c738752009-07-31 12:53:58 -040074extern int cap_file_mmap(struct file *file, unsigned long reqprot,
75 unsigned long prot, unsigned long flags,
76 unsigned long addr, unsigned long addr_only);
David Howellsd84f4f92008-11-14 10:39:23 +110077extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
Andrew G. Morgan3898b1b2008-04-28 02:13:40 -070078extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
David Howellsd84f4f92008-11-14 10:39:23 +110079 unsigned long arg4, unsigned long arg5);
KOSAKI Motohirob0ae1982010-10-15 04:21:18 +090080extern int cap_task_setscheduler(struct task_struct *p);
Eric Paris7b41b172008-04-23 14:10:25 -040081extern int cap_task_setioprio(struct task_struct *p, int ioprio);
82extern int cap_task_setnice(struct task_struct *p, int nice);
James Morris20510f22007-10-16 23:31:32 -070083extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
Linus Torvalds1da177e2005-04-16 15:20:36 -070084
85struct msghdr;
86struct sk_buff;
87struct sock;
88struct sockaddr;
89struct socket;
Trent Jaegerdf718372005-12-13 23:12:27 -080090struct flowi;
91struct dst_entry;
92struct xfrm_selector;
93struct xfrm_policy;
94struct xfrm_state;
95struct xfrm_user_sec_ctx;
Eric Paris2069f452008-07-04 09:47:13 +100096struct seq_file;
Linus Torvalds1da177e2005-04-16 15:20:36 -070097
98extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
Darrel Goeddelc7bdb542006-06-27 13:26:11 -070099extern int cap_netlink_recv(struct sk_buff *skb, int cap);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100
wzt.wzt@gmail.com189b3b12010-02-23 23:15:28 +0800101void reset_security_ops(void);
102
David Howells6e141542009-12-15 19:27:45 +0000103#ifdef CONFIG_MMU
Eric Parised032182007-06-28 15:55:21 -0400104extern unsigned long mmap_min_addr;
Eric Parisa2551df2009-07-31 12:54:11 -0400105extern unsigned long dac_mmap_min_addr;
David Howells6e141542009-12-15 19:27:45 +0000106#else
107#define dac_mmap_min_addr 0UL
108#endif
109
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110/*
111 * Values used in the task_security_ops calls
112 */
113/* setuid or setgid, id0 == uid or gid */
114#define LSM_SETID_ID 1
115
116/* setreuid or setregid, id0 == real, id1 == eff */
117#define LSM_SETID_RE 2
118
119/* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
120#define LSM_SETID_RES 4
121
122/* setfsuid or setfsgid, id0 == fsuid or fsgid */
123#define LSM_SETID_FS 8
124
125/* forward declares to avoid warnings */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126struct sched_param;
Venkat Yekkirala4237c752006-07-24 23:32:50 -0700127struct request_sock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128
David Howellsa6f76f22008-11-14 10:39:24 +1100129/* bprm->unsafe reasons */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130#define LSM_UNSAFE_SHARE 1
131#define LSM_UNSAFE_PTRACE 2
132#define LSM_UNSAFE_PTRACE_CAP 4
133
David Howells6e141542009-12-15 19:27:45 +0000134#ifdef CONFIG_MMU
Eric Paris47d439e2009-08-07 14:53:57 -0400135/*
136 * If a hint addr is less than mmap_min_addr change hint to be as
137 * low as possible but still greater than mmap_min_addr
138 */
139static inline unsigned long round_hint_to_min(unsigned long hint)
140{
141 hint &= PAGE_MASK;
142 if (((void *)hint != NULL) &&
143 (hint < mmap_min_addr))
144 return PAGE_ALIGN(mmap_min_addr);
145 return hint;
146}
Alexey Dobriyan8d65af72009-09-23 15:57:19 -0700147extern int mmap_min_addr_handler(struct ctl_table *table, int write,
Eric Paris47d439e2009-08-07 14:53:57 -0400148 void __user *buffer, size_t *lenp, loff_t *ppos);
David Howells6e141542009-12-15 19:27:45 +0000149#endif
Eric Paris47d439e2009-08-07 14:53:57 -0400150
Mimi Zohar9d8f13b2011-06-06 15:29:25 -0400151/* security_inode_init_security callback function to write xattrs */
152typedef int (*initxattrs) (struct inode *inode,
153 const struct xattr *xattr_array, void *fs_data);
154
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155#ifdef CONFIG_SECURITY
156
Eric Parise0007522008-03-05 10:31:54 -0500157struct security_mnt_opts {
158 char **mnt_opts;
159 int *mnt_opts_flags;
160 int num_mnt_opts;
161};
162
163static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
164{
165 opts->mnt_opts = NULL;
166 opts->mnt_opts_flags = NULL;
167 opts->num_mnt_opts = 0;
168}
169
170static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
171{
172 int i;
173 if (opts->mnt_opts)
Eric Paris7b41b172008-04-23 14:10:25 -0400174 for (i = 0; i < opts->num_mnt_opts; i++)
Eric Parise0007522008-03-05 10:31:54 -0500175 kfree(opts->mnt_opts[i]);
176 kfree(opts->mnt_opts);
177 opts->mnt_opts = NULL;
178 kfree(opts->mnt_opts_flags);
179 opts->mnt_opts_flags = NULL;
180 opts->num_mnt_opts = 0;
181}
182
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183/**
184 * struct security_operations - main security structure
185 *
Ahmed S. Darwish076c54c2008-03-06 18:09:10 +0200186 * Security module identifier.
187 *
188 * @name:
189 * A string that acts as a unique identifeir for the LSM with max number
190 * of characters = SECURITY_NAME_MAX.
191 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192 * Security hooks for program execution operations.
193 *
David Howellsa6f76f22008-11-14 10:39:24 +1100194 * @bprm_set_creds:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195 * Save security information in the bprm->security field, typically based
196 * on information about the bprm->file, for later use by the apply_creds
197 * hook. This hook may also optionally check permissions (e.g. for
198 * transitions between security domains).
199 * This hook may be called multiple times during a single execve, e.g. for
200 * interpreters. The hook can tell whether it has already been called by
201 * checking to see if @bprm->security is non-NULL. If so, then the hook
202 * may decide either to retain the security information saved earlier or
203 * to replace it.
204 * @bprm contains the linux_binprm structure.
205 * Return 0 if the hook is successful and permission is granted.
206 * @bprm_check_security:
David Howellsa6f76f22008-11-14 10:39:24 +1100207 * This hook mediates the point when a search for a binary handler will
208 * begin. It allows a check the @bprm->security value which is set in the
209 * preceding set_creds call. The primary difference from set_creds is
210 * that the argv list and envp list are reliably available in @bprm. This
211 * hook may be called multiple times during a single execve; and in each
212 * pass set_creds is called first.
Eric Paris7b41b172008-04-23 14:10:25 -0400213 * @bprm contains the linux_binprm structure.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214 * Return 0 if the hook is successful and permission is granted.
David Howellsa6f76f22008-11-14 10:39:24 +1100215 * @bprm_committing_creds:
216 * Prepare to install the new security attributes of a process being
217 * transformed by an execve operation, based on the old credentials
218 * pointed to by @current->cred and the information set in @bprm->cred by
219 * the bprm_set_creds hook. @bprm points to the linux_binprm structure.
220 * This hook is a good place to perform state changes on the process such
221 * as closing open file descriptors to which access will no longer be
222 * granted when the attributes are changed. This is called immediately
223 * before commit_creds().
224 * @bprm_committed_creds:
225 * Tidy up after the installation of the new security attributes of a
226 * process being transformed by an execve operation. The new credentials
227 * have, by this point, been set to @current->cred. @bprm points to the
228 * linux_binprm structure. This hook is a good place to perform state
229 * changes on the process such as clearing out non-inheritable signal
230 * state. This is called immediately after commit_creds().
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231 * @bprm_secureexec:
Eric Paris7b41b172008-04-23 14:10:25 -0400232 * Return a boolean value (0 or 1) indicating whether a "secure exec"
233 * is required. The flag is passed in the auxiliary table
234 * on the initial stack to the ELF interpreter to indicate whether libc
235 * should enable secure mode.
236 * @bprm contains the linux_binprm structure.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237 *
238 * Security hooks for filesystem operations.
239 *
240 * @sb_alloc_security:
241 * Allocate and attach a security structure to the sb->s_security field.
242 * The s_security field is initialized to NULL when the structure is
243 * allocated.
244 * @sb contains the super_block structure to be modified.
245 * Return 0 if operation was successful.
246 * @sb_free_security:
247 * Deallocate and clear the sb->s_security field.
248 * @sb contains the super_block structure to be modified.
249 * @sb_statfs:
David Howells726c3342006-06-23 02:02:58 -0700250 * Check permission before obtaining filesystem statistics for the @mnt
251 * mountpoint.
252 * @dentry is a handle on the superblock for the filesystem.
Eric Paris7b41b172008-04-23 14:10:25 -0400253 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254 * @sb_mount:
255 * Check permission before an object specified by @dev_name is mounted on
256 * the mount point named by @nd. For an ordinary mount, @dev_name
257 * identifies a device if the file system type requires a device. For a
258 * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a
259 * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
260 * pathname of the object being mounted.
261 * @dev_name contains the name for object being mounted.
Al Virob5266eb2008-03-22 17:48:24 -0400262 * @path contains the path for mount point object.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700263 * @type contains the filesystem type.
264 * @flags contains the mount flags.
265 * @data contains the filesystem-specific data.
266 * Return 0 if permission is granted.
267 * @sb_copy_data:
268 * Allow mount option data to be copied prior to parsing by the filesystem,
269 * so that the security module can extract security-specific mount
270 * options cleanly (a filesystem may modify the data e.g. with strsep()).
271 * This also allows the original mount data to be stripped of security-
272 * specific options to avoid having to make filesystems aware of them.
273 * @type the type of filesystem being mounted.
274 * @orig the original mount data copied from userspace.
275 * @copy copied data which will be passed to the security module.
276 * Returns 0 if the copy was successful.
Eric Parisff36fe22011-03-03 16:09:14 -0500277 * @sb_remount:
278 * Extracts security system specifc mount options and verifys no changes
279 * are being made to those options.
280 * @sb superblock being remounted
281 * @data contains the filesystem-specific data.
282 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283 * @sb_umount:
284 * Check permission before the @mnt file system is unmounted.
285 * @mnt contains the mounted file system.
286 * @flags contains the unmount flags, e.g. MNT_FORCE.
287 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288 * @sb_pivotroot:
289 * Check permission before pivoting the root filesystem.
Al Virob5266eb2008-03-22 17:48:24 -0400290 * @old_path contains the path for the new location of the current root (put_old).
Eric Paris7b41b172008-04-23 14:10:25 -0400291 * @new_path contains the path for the new root (new_root).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292 * Return 0 if permission is granted.
Eric Parisc9180a52007-11-30 13:00:35 -0500293 * @sb_set_mnt_opts:
294 * Set the security relevant mount options used for a superblock
295 * @sb the superblock to set security mount options for
Eric Parise0007522008-03-05 10:31:54 -0500296 * @opts binary data structure containing all lsm mount data
Eric Parisc9180a52007-11-30 13:00:35 -0500297 * @sb_clone_mnt_opts:
298 * Copy all security options from a given superblock to another
299 * @oldsb old superblock which contain information to clone
300 * @newsb new superblock which needs filled in
Eric Parise0007522008-03-05 10:31:54 -0500301 * @sb_parse_opts_str:
302 * Parse a string of security data filling in the opts structure
303 * @options string containing all mount options known by the LSM
304 * @opts binary data structure usable by the LSM
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305 *
306 * Security hooks for inode operations.
307 *
308 * @inode_alloc_security:
309 * Allocate and attach a security structure to @inode->i_security. The
310 * i_security field is initialized to NULL when the inode structure is
311 * allocated.
312 * @inode contains the inode structure.
313 * Return 0 if operation was successful.
314 * @inode_free_security:
315 * @inode contains the inode structure.
316 * Deallocate the inode security structure and set @inode->i_security to
Eric Paris7b41b172008-04-23 14:10:25 -0400317 * NULL.
Stephen Smalley5e41ff92005-09-09 13:01:35 -0700318 * @inode_init_security:
Eric Paris7b41b172008-04-23 14:10:25 -0400319 * Obtain the security attribute name suffix and value to set on a newly
Stephen Smalley5e41ff92005-09-09 13:01:35 -0700320 * created inode and set up the incore security field for the new inode.
321 * This hook is called by the fs code as part of the inode creation
322 * transaction and provides for atomic labeling of the inode, unlike
323 * the post_create/mkdir/... hooks called by the VFS. The hook function
324 * is expected to allocate the name and value via kmalloc, with the caller
325 * being responsible for calling kfree after using them.
326 * If the security module does not use security attributes or does
327 * not wish to put a security attribute on this particular inode,
328 * then it should return -EOPNOTSUPP to skip this processing.
329 * @inode contains the inode structure of the newly created inode.
330 * @dir contains the inode structure of the parent directory.
Eric Paris2a7dba32011-02-01 11:05:39 -0500331 * @qstr contains the last path component of the new object
Stephen Smalley5e41ff92005-09-09 13:01:35 -0700332 * @name will be set to the allocated name suffix (e.g. selinux).
333 * @value will be set to the allocated attribute value.
334 * @len will be set to the length of the value.
335 * Returns 0 if @name and @value have been successfully set,
336 * -EOPNOTSUPP if no security attribute is needed, or
337 * -ENOMEM on memory allocation failure.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338 * @inode_create:
339 * Check permission to create a regular file.
340 * @dir contains inode structure of the parent of the new file.
341 * @dentry contains the dentry structure for the file to be created.
342 * @mode contains the file mode of the file to be created.
343 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344 * @inode_link:
345 * Check permission before creating a new hard link to a file.
346 * @old_dentry contains the dentry structure for an existing link to the file.
347 * @dir contains the inode structure of the parent directory of the new link.
348 * @new_dentry contains the dentry structure for the new link.
349 * Return 0 if permission is granted.
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900350 * @path_link:
351 * Check permission before creating a new hard link to a file.
352 * @old_dentry contains the dentry structure for an existing link
353 * to the file.
354 * @new_dir contains the path structure of the parent directory of
355 * the new link.
356 * @new_dentry contains the dentry structure for the new link.
357 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358 * @inode_unlink:
Eric Paris7b41b172008-04-23 14:10:25 -0400359 * Check the permission to remove a hard link to a file.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360 * @dir contains the inode structure of parent directory of the file.
361 * @dentry contains the dentry structure for file to be unlinked.
362 * Return 0 if permission is granted.
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900363 * @path_unlink:
364 * Check the permission to remove a hard link to a file.
365 * @dir contains the path structure of parent directory of the file.
366 * @dentry contains the dentry structure for file to be unlinked.
367 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368 * @inode_symlink:
369 * Check the permission to create a symbolic link to a file.
370 * @dir contains the inode structure of parent directory of the symbolic link.
371 * @dentry contains the dentry structure of the symbolic link.
372 * @old_name contains the pathname of file.
373 * Return 0 if permission is granted.
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900374 * @path_symlink:
375 * Check the permission to create a symbolic link to a file.
376 * @dir contains the path structure of parent directory of
377 * the symbolic link.
378 * @dentry contains the dentry structure of the symbolic link.
379 * @old_name contains the pathname of file.
380 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381 * @inode_mkdir:
382 * Check permissions to create a new directory in the existing directory
Eric Paris7b41b172008-04-23 14:10:25 -0400383 * associated with inode strcture @dir.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384 * @dir containst the inode structure of parent of the directory to be created.
385 * @dentry contains the dentry structure of new directory.
386 * @mode contains the mode of new directory.
387 * Return 0 if permission is granted.
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900388 * @path_mkdir:
389 * Check permissions to create a new directory in the existing directory
390 * associated with path strcture @path.
391 * @dir containst the path structure of parent of the directory
392 * to be created.
393 * @dentry contains the dentry structure of new directory.
394 * @mode contains the mode of new directory.
395 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396 * @inode_rmdir:
397 * Check the permission to remove a directory.
398 * @dir contains the inode structure of parent of the directory to be removed.
399 * @dentry contains the dentry structure of directory to be removed.
400 * Return 0 if permission is granted.
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900401 * @path_rmdir:
402 * Check the permission to remove a directory.
403 * @dir contains the path structure of parent of the directory to be
404 * removed.
405 * @dentry contains the dentry structure of directory to be removed.
406 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407 * @inode_mknod:
408 * Check permissions when creating a special file (or a socket or a fifo
409 * file created via the mknod system call). Note that if mknod operation
410 * is being done for a regular file, then the create hook will be called
411 * and not this hook.
412 * @dir contains the inode structure of parent of the new file.
413 * @dentry contains the dentry structure of the new file.
414 * @mode contains the mode of the new file.
Michael Opdenacker59c51592007-05-09 08:57:56 +0200415 * @dev contains the device number.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416 * Return 0 if permission is granted.
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900417 * @path_mknod:
418 * Check permissions when creating a file. Note that this hook is called
419 * even if mknod operation is being done for a regular file.
420 * @dir contains the path structure of parent of the new file.
421 * @dentry contains the dentry structure of the new file.
422 * @mode contains the mode of the new file.
423 * @dev contains the undecoded device number. Use new_decode_dev() to get
424 * the decoded device number.
425 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426 * @inode_rename:
427 * Check for permission to rename a file or directory.
428 * @old_dir contains the inode structure for parent of the old link.
429 * @old_dentry contains the dentry structure of the old link.
430 * @new_dir contains the inode structure for parent of the new link.
431 * @new_dentry contains the dentry structure of the new link.
432 * Return 0 if permission is granted.
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900433 * @path_rename:
434 * Check for permission to rename a file or directory.
435 * @old_dir contains the path structure for parent of the old link.
436 * @old_dentry contains the dentry structure of the old link.
437 * @new_dir contains the path structure for parent of the new link.
438 * @new_dentry contains the dentry structure of the new link.
439 * Return 0 if permission is granted.
Tetsuo Handa89eda062009-10-04 21:49:47 +0900440 * @path_chmod:
441 * Check for permission to change DAC's permission of a file or directory.
442 * @dentry contains the dentry structure.
443 * @mnt contains the vfsmnt structure.
444 * @mode contains DAC's mode.
445 * Return 0 if permission is granted.
446 * @path_chown:
447 * Check for permission to change owner/group of a file or directory.
448 * @path contains the path structure.
449 * @uid contains new owner's ID.
450 * @gid contains new group's ID.
451 * Return 0 if permission is granted.
Tetsuo Handa8b8efb42009-10-04 21:49:48 +0900452 * @path_chroot:
453 * Check for permission to change root directory.
454 * @path contains the path structure.
455 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700456 * @inode_readlink:
457 * Check the permission to read the symbolic link.
458 * @dentry contains the dentry structure for the file link.
459 * Return 0 if permission is granted.
460 * @inode_follow_link:
461 * Check permission to follow a symbolic link when looking up a pathname.
462 * @dentry contains the dentry structure for the link.
463 * @nd contains the nameidata structure for the parent directory.
464 * Return 0 if permission is granted.
465 * @inode_permission:
466 * Check permission before accessing an inode. This hook is called by the
467 * existing Linux permission function, so a security module can use it to
468 * provide additional checking for existing Linux permission checks.
469 * Notice that this hook is called when a file is opened (as well as many
470 * other operations), whereas the file_security_ops permission hook is
471 * called when the actual read/write operations are performed.
472 * @inode contains the inode structure to check.
473 * @mask contains the permission mask.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474 * Return 0 if permission is granted.
475 * @inode_setattr:
476 * Check permission before setting file attributes. Note that the kernel
477 * call to notify_change is performed from several locations, whenever
478 * file attributes change (such as when a file is truncated, chown/chmod
479 * operations, transferring disk quotas, etc).
480 * @dentry contains the dentry structure for the file.
481 * @attr is the iattr structure containing the new file attributes.
482 * Return 0 if permission is granted.
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900483 * @path_truncate:
484 * Check permission before truncating a file.
485 * @path contains the path structure for the file.
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900486 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487 * @inode_getattr:
488 * Check permission before obtaining file attributes.
489 * @mnt is the vfsmount where the dentry was looked up
490 * @dentry contains the dentry structure for the file.
491 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492 * @inode_setxattr:
Eric Paris7b41b172008-04-23 14:10:25 -0400493 * Check permission before setting the extended attributes
494 * @value identified by @name for @dentry.
495 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496 * @inode_post_setxattr:
Eric Paris7b41b172008-04-23 14:10:25 -0400497 * Update inode security field after successful setxattr operation.
498 * @value identified by @name for @dentry.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499 * @inode_getxattr:
Eric Paris7b41b172008-04-23 14:10:25 -0400500 * Check permission before obtaining the extended attributes
501 * identified by @name for @dentry.
502 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503 * @inode_listxattr:
Eric Paris7b41b172008-04-23 14:10:25 -0400504 * Check permission before obtaining the list of extended attribute
505 * names for @dentry.
506 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507 * @inode_removexattr:
Eric Paris7b41b172008-04-23 14:10:25 -0400508 * Check permission before removing the extended attribute
509 * identified by @name for @dentry.
510 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511 * @inode_getsecurity:
David P. Quigley42492592008-02-04 22:29:39 -0800512 * Retrieve a copy of the extended attribute representation of the
513 * security label associated with @name for @inode via @buffer. Note that
514 * @name is the remainder of the attribute name after the security prefix
515 * has been removed. @alloc is used to specify of the call should return a
516 * value via the buffer or just the value length Return size of buffer on
517 * success.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518 * @inode_setsecurity:
519 * Set the security label associated with @name for @inode from the
520 * extended attribute value @value. @size indicates the size of the
521 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
Eric Paris7b41b172008-04-23 14:10:25 -0400522 * Note that @name is the remainder of the attribute name after the
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523 * security. prefix has been removed.
524 * Return 0 on success.
525 * @inode_listsecurity:
526 * Copy the extended attribute names for the security labels
527 * associated with @inode into @buffer. The maximum size of @buffer
528 * is specified by @buffer_size. @buffer may be NULL to request
529 * the size of the buffer required.
530 * Returns number of bytes used/required on success.
Serge E. Hallynb5376772007-10-16 23:31:36 -0700531 * @inode_need_killpriv:
532 * Called when an inode has been changed.
533 * @dentry is the dentry being changed.
534 * Return <0 on error to abort the inode change operation.
535 * Return 0 if inode_killpriv does not need to be called.
536 * Return >0 if inode_killpriv does need to be called.
537 * @inode_killpriv:
538 * The setuid bit is being removed. Remove similar security labels.
539 * Called with the dentry->d_inode->i_mutex held.
540 * @dentry is the dentry being changed.
541 * Return 0 on success. If error is returned, then the operation
542 * causing setuid bit removal is failed.
Ahmed S. Darwish8a076192008-03-01 21:51:09 +0200543 * @inode_getsecid:
544 * Get the secid associated with the node.
545 * @inode contains a pointer to the inode.
546 * @secid contains a pointer to the location where result will be saved.
547 * In case of failure, @secid will be set to zero.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700548 *
549 * Security hooks for file operations
550 *
551 * @file_permission:
552 * Check file permissions before accessing an open file. This hook is
553 * called by various operations that read or write files. A security
554 * module can use this hook to perform additional checking on these
555 * operations, e.g. to revalidate permissions on use to support privilege
556 * bracketing or policy changes. Notice that this hook is used when the
557 * actual read/write operations are performed, whereas the
558 * inode_security_ops hook is called when a file is opened (as well as
559 * many other operations).
560 * Caveat: Although this hook can be used to revalidate permissions for
561 * various system call operations that read or write files, it does not
562 * address the revalidation of permissions for memory-mapped files.
563 * Security modules must handle this separately if they need such
564 * revalidation.
565 * @file contains the file structure being accessed.
566 * @mask contains the requested permissions.
567 * Return 0 if permission is granted.
568 * @file_alloc_security:
569 * Allocate and attach a security structure to the file->f_security field.
570 * The security field is initialized to NULL when the structure is first
571 * created.
572 * @file contains the file structure to secure.
573 * Return 0 if the hook is successful and permission is granted.
574 * @file_free_security:
575 * Deallocate and free any security structures stored in file->f_security.
576 * @file contains the file structure being modified.
577 * @file_ioctl:
578 * @file contains the file structure.
579 * @cmd contains the operation to perform.
580 * @arg contains the operational arguments.
581 * Check permission for an ioctl operation on @file. Note that @arg can
582 * sometimes represents a user space pointer; in other cases, it may be a
583 * simple integer value. When @arg represents a user space pointer, it
584 * should never be used by the security module.
585 * Return 0 if permission is granted.
586 * @file_mmap :
587 * Check permissions for a mmap operation. The @file may be NULL, e.g.
588 * if mapping anonymous memory.
589 * @file contains the file structure for file to map (may be NULL).
590 * @reqprot contains the protection requested by the application.
591 * @prot contains the protection that will be applied by the kernel.
592 * @flags contains the operational flags.
593 * Return 0 if permission is granted.
594 * @file_mprotect:
595 * Check permissions before changing memory access permissions.
596 * @vma contains the memory region to modify.
597 * @reqprot contains the protection requested by the application.
598 * @prot contains the protection that will be applied by the kernel.
599 * Return 0 if permission is granted.
600 * @file_lock:
601 * Check permission before performing file locking operations.
602 * Note: this hook mediates both flock and fcntl style locks.
603 * @file contains the file structure.
604 * @cmd contains the posix-translated lock operation to perform
605 * (e.g. F_RDLCK, F_WRLCK).
606 * Return 0 if permission is granted.
607 * @file_fcntl:
608 * Check permission before allowing the file operation specified by @cmd
609 * from being performed on the file @file. Note that @arg can sometimes
610 * represents a user space pointer; in other cases, it may be a simple
611 * integer value. When @arg represents a user space pointer, it should
612 * never be used by the security module.
613 * @file contains the file structure.
614 * @cmd contains the operation to be performed.
615 * @arg contains the operational arguments.
616 * Return 0 if permission is granted.
617 * @file_set_fowner:
618 * Save owner security information (typically from current->security) in
619 * file->f_security for later use by the send_sigiotask hook.
620 * @file contains the file structure to update.
621 * Return 0 on success.
622 * @file_send_sigiotask:
623 * Check permission for the file owner @fown to send SIGIO or SIGURG to the
624 * process @tsk. Note that this hook is sometimes called from interrupt.
625 * Note that the fown_struct, @fown, is never outside the context of a
626 * struct file, so the file structure (and associated security information)
627 * can always be obtained:
Robert P. J. Dayb385a142007-02-10 01:46:25 -0800628 * container_of(fown, struct file, f_owner)
Eric Paris7b41b172008-04-23 14:10:25 -0400629 * @tsk contains the structure of task receiving signal.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700630 * @fown contains the file owner information.
631 * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
632 * Return 0 if permission is granted.
633 * @file_receive:
634 * This hook allows security modules to control the ability of a process
635 * to receive an open file descriptor via socket IPC.
636 * @file contains the file structure being received.
637 * Return 0 if permission is granted.
638 *
Yuichi Nakamura788e7dd2007-09-14 09:27:07 +0900639 * Security hook for dentry
640 *
641 * @dentry_open
642 * Save open-time permission checking state for later use upon
643 * file_permission, and recheck access if anything has changed
644 * since inode_permission.
645 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646 * Security hooks for task operations.
647 *
648 * @task_create:
649 * Check permission before creating a child process. See the clone(2)
650 * manual page for definitions of the @clone_flags.
651 * @clone_flags contains the flags indicating what should be shared.
652 * Return 0 if permission is granted.
David Howellsee18d642009-09-02 09:14:21 +0100653 * @cred_alloc_blank:
654 * @cred points to the credentials.
655 * @gfp indicates the atomicity of any memory allocations.
656 * Only allocate sufficient memory and attach to @cred such that
657 * cred_transfer() will not get ENOMEM.
David Howellsf1752ee2008-11-14 10:39:17 +1100658 * @cred_free:
659 * @cred points to the credentials.
660 * Deallocate and clear the cred->security field in a set of credentials.
David Howellsd84f4f92008-11-14 10:39:23 +1100661 * @cred_prepare:
662 * @new points to the new credentials.
663 * @old points to the original credentials.
664 * @gfp indicates the atomicity of any memory allocations.
665 * Prepare a new set of credentials by copying the data from the old set.
David Howellsee18d642009-09-02 09:14:21 +0100666 * @cred_transfer:
667 * @new points to the new credentials.
668 * @old points to the original credentials.
669 * Transfer data from original creds to new creds
David Howells3a3b7ce2008-11-14 10:39:28 +1100670 * @kernel_act_as:
671 * Set the credentials for a kernel service to act as (subjective context).
672 * @new points to the credentials to be modified.
673 * @secid specifies the security ID to be set
674 * The current task must be the one that nominated @secid.
675 * Return 0 if successful.
676 * @kernel_create_files_as:
677 * Set the file creation context in a set of credentials to be the same as
678 * the objective context of the specified inode.
679 * @new points to the credentials to be modified.
680 * @inode points to the inode to use as a reference.
681 * The current task must be the one that nominated @inode.
682 * Return 0 if successful.
Eric Paris91884992009-08-13 09:44:57 -0400683 * @kernel_module_request:
684 * Ability to trigger the kernel to automatically upcall to userspace for
685 * userspace to load a kernel module with the given name.
Eric Parisdd8dbf22009-11-03 16:35:32 +1100686 * @kmod_name name of the module requested by the kernel
James Morrisf322abf2009-08-14 11:19:29 +1000687 * Return 0 if successful.
David Howellsd84f4f92008-11-14 10:39:23 +1100688 * @task_fix_setuid:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700689 * Update the module's state after setting one or more of the user
690 * identity attributes of the current process. The @flags parameter
691 * indicates which of the set*uid system calls invoked this hook. If
David Howellsd84f4f92008-11-14 10:39:23 +1100692 * @new is the set of credentials that will be installed. Modifications
693 * should be made to this rather than to @current->cred.
694 * @old is the set of credentials that are being replaces
Linus Torvalds1da177e2005-04-16 15:20:36 -0700695 * @flags contains one of the LSM_SETID_* values.
696 * Return 0 on success.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700697 * @task_setpgid:
698 * Check permission before setting the process group identifier of the
699 * process @p to @pgid.
700 * @p contains the task_struct for process being modified.
701 * @pgid contains the new pgid.
702 * Return 0 if permission is granted.
703 * @task_getpgid:
704 * Check permission before getting the process group identifier of the
705 * process @p.
706 * @p contains the task_struct for the process.
707 * Return 0 if permission is granted.
708 * @task_getsid:
709 * Check permission before getting the session identifier of the process
710 * @p.
711 * @p contains the task_struct for the process.
712 * Return 0 if permission is granted.
David Quigleyf9008e42006-06-30 01:55:46 -0700713 * @task_getsecid:
714 * Retrieve the security identifier of the process @p.
715 * @p contains the task_struct for the process and place is into @secid.
Ahmed S. Darwish8a076192008-03-01 21:51:09 +0200716 * In case of failure, @secid will be set to zero.
717 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700718 * @task_setnice:
719 * Check permission before setting the nice value of @p to @nice.
720 * @p contains the task_struct of process.
721 * @nice contains the new nice value.
722 * Return 0 if permission is granted.
James Morris03e68062006-06-23 02:03:58 -0700723 * @task_setioprio
724 * Check permission before setting the ioprio value of @p to @ioprio.
725 * @p contains the task_struct of process.
726 * @ioprio contains the new ioprio value
727 * Return 0 if permission is granted.
David Quigleya1836a42006-06-30 01:55:49 -0700728 * @task_getioprio
729 * Check permission before getting the ioprio value of @p.
730 * @p contains the task_struct of process.
731 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700732 * @task_setrlimit:
733 * Check permission before setting the resource limits of the current
734 * process for @resource to @new_rlim. The old resource limit values can
735 * be examined by dereferencing (current->signal->rlim + resource).
736 * @resource contains the resource whose limit is being set.
737 * @new_rlim contains the new limits for @resource.
738 * Return 0 if permission is granted.
739 * @task_setscheduler:
740 * Check permission before setting scheduling policy and/or parameters of
741 * process @p based on @policy and @lp.
742 * @p contains the task_struct for process.
743 * @policy contains the scheduling policy.
744 * @lp contains the scheduling parameters.
745 * Return 0 if permission is granted.
746 * @task_getscheduler:
747 * Check permission before obtaining scheduling information for process
748 * @p.
749 * @p contains the task_struct for process.
750 * Return 0 if permission is granted.
David Quigley35601542006-06-23 02:04:01 -0700751 * @task_movememory
752 * Check permission before moving memory owned by process @p.
753 * @p contains the task_struct for process.
754 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700755 * @task_kill:
756 * Check permission before sending signal @sig to @p. @info can be NULL,
757 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
758 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
759 * from the kernel and should typically be permitted.
760 * SIGIO signals are handled separately by the send_sigiotask hook in
761 * file_security_ops.
762 * @p contains the task_struct for process.
763 * @info contains the signal information.
764 * @sig contains the signal value.
David Quigleyf9008e42006-06-30 01:55:46 -0700765 * @secid contains the sid of the process where the signal originated
Linus Torvalds1da177e2005-04-16 15:20:36 -0700766 * Return 0 if permission is granted.
767 * @task_wait:
768 * Check permission before allowing a process to reap a child process @p
769 * and collect its status information.
770 * @p contains the task_struct for process.
771 * Return 0 if permission is granted.
772 * @task_prctl:
773 * Check permission before performing a process control operation on the
774 * current process.
775 * @option contains the operation.
776 * @arg2 contains a argument.
777 * @arg3 contains a argument.
778 * @arg4 contains a argument.
779 * @arg5 contains a argument.
David Howellsd84f4f92008-11-14 10:39:23 +1100780 * Return -ENOSYS if no-one wanted to handle this op, any other value to
781 * cause prctl() to return immediately with that value.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700782 * @task_to_inode:
Eric Paris7b41b172008-04-23 14:10:25 -0400783 * Set the security attributes for an inode based on an associated task's
784 * security attributes, e.g. for /proc/pid inodes.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700785 * @p contains the task_struct for the task.
786 * @inode contains the inode structure for the inode.
787 *
788 * Security hooks for Netlink messaging.
789 *
790 * @netlink_send:
791 * Save security information for a netlink message so that permission
792 * checking can be performed when the message is processed. The security
793 * information can be saved using the eff_cap field of the
Eric Paris7b41b172008-04-23 14:10:25 -0400794 * netlink_skb_parms structure. Also may be used to provide fine
Linus Torvalds1da177e2005-04-16 15:20:36 -0700795 * grained control over message transmission.
796 * @sk associated sock of task sending the message.,
797 * @skb contains the sk_buff structure for the netlink message.
798 * Return 0 if the information was successfully saved and message
799 * is allowed to be transmitted.
800 * @netlink_recv:
801 * Check permission before processing the received netlink message in
802 * @skb.
803 * @skb contains the sk_buff structure for the netlink message.
Darrel Goeddelc7bdb542006-06-27 13:26:11 -0700804 * @cap indicates the capability required
Linus Torvalds1da177e2005-04-16 15:20:36 -0700805 * Return 0 if permission is granted.
806 *
807 * Security hooks for Unix domain networking.
808 *
809 * @unix_stream_connect:
810 * Check permissions before establishing a Unix domain stream connection
811 * between @sock and @other.
David S. Miller3610cda2011-01-05 15:38:53 -0800812 * @sock contains the sock structure.
813 * @other contains the peer sock structure.
814 * @newsk contains the new sock structure.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700815 * Return 0 if permission is granted.
816 * @unix_may_send:
817 * Check permissions before connecting or sending datagrams from @sock to
818 * @other.
819 * @sock contains the socket structure.
820 * @sock contains the peer socket structure.
821 * Return 0 if permission is granted.
822 *
823 * The @unix_stream_connect and @unix_may_send hooks were necessary because
824 * Linux provides an alternative to the conventional file name space for Unix
825 * domain sockets. Whereas binding and connecting to sockets in the file name
826 * space is mediated by the typical file permissions (and caught by the mknod
827 * and permission hooks in inode_security_ops), binding and connecting to
828 * sockets in the abstract name space is completely unmediated. Sufficient
829 * control of Unix domain sockets in the abstract name space isn't possible
830 * using only the socket layer hooks, since we need to know the actual target
831 * socket, which is not looked up until we are inside the af_unix code.
832 *
833 * Security hooks for socket operations.
834 *
835 * @socket_create:
836 * Check permissions prior to creating a new socket.
837 * @family contains the requested protocol family.
838 * @type contains the requested communications type.
839 * @protocol contains the requested protocol.
840 * @kern set to 1 if a kernel socket.
841 * Return 0 if permission is granted.
842 * @socket_post_create:
843 * This hook allows a module to update or allocate a per-socket security
844 * structure. Note that the security field was not added directly to the
845 * socket structure, but rather, the socket security information is stored
846 * in the associated inode. Typically, the inode alloc_security hook will
847 * allocate and and attach security information to
848 * sock->inode->i_security. This hook may be used to update the
849 * sock->inode->i_security field with additional information that wasn't
850 * available when the inode was allocated.
851 * @sock contains the newly created socket structure.
852 * @family contains the requested protocol family.
853 * @type contains the requested communications type.
854 * @protocol contains the requested protocol.
855 * @kern set to 1 if a kernel socket.
856 * @socket_bind:
857 * Check permission before socket protocol layer bind operation is
858 * performed and the socket @sock is bound to the address specified in the
859 * @address parameter.
860 * @sock contains the socket structure.
861 * @address contains the address to bind to.
862 * @addrlen contains the length of address.
Eric Paris7b41b172008-04-23 14:10:25 -0400863 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700864 * @socket_connect:
865 * Check permission before socket protocol layer connect operation
866 * attempts to connect socket @sock to a remote address, @address.
867 * @sock contains the socket structure.
868 * @address contains the address of remote endpoint.
869 * @addrlen contains the length of address.
Eric Paris7b41b172008-04-23 14:10:25 -0400870 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700871 * @socket_listen:
872 * Check permission before socket protocol layer listen operation.
873 * @sock contains the socket structure.
874 * @backlog contains the maximum length for the pending connection queue.
875 * Return 0 if permission is granted.
876 * @socket_accept:
877 * Check permission before accepting a new connection. Note that the new
878 * socket, @newsock, has been created and some information copied to it,
879 * but the accept operation has not actually been performed.
880 * @sock contains the listening socket structure.
881 * @newsock contains the newly created server socket for connection.
882 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700883 * @socket_sendmsg:
884 * Check permission before transmitting a message to another socket.
885 * @sock contains the socket structure.
886 * @msg contains the message to be transmitted.
887 * @size contains the size of message.
888 * Return 0 if permission is granted.
889 * @socket_recvmsg:
890 * Check permission before receiving a message from a socket.
891 * @sock contains the socket structure.
892 * @msg contains the message structure.
893 * @size contains the size of message structure.
894 * @flags contains the operational flags.
Eric Paris7b41b172008-04-23 14:10:25 -0400895 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700896 * @socket_getsockname:
897 * Check permission before the local address (name) of the socket object
898 * @sock is retrieved.
899 * @sock contains the socket structure.
900 * Return 0 if permission is granted.
901 * @socket_getpeername:
902 * Check permission before the remote address (name) of a socket object
903 * @sock is retrieved.
904 * @sock contains the socket structure.
905 * Return 0 if permission is granted.
906 * @socket_getsockopt:
907 * Check permissions before retrieving the options associated with socket
908 * @sock.
909 * @sock contains the socket structure.
910 * @level contains the protocol level to retrieve option from.
911 * @optname contains the name of option to retrieve.
912 * Return 0 if permission is granted.
913 * @socket_setsockopt:
914 * Check permissions before setting the options associated with socket
915 * @sock.
916 * @sock contains the socket structure.
917 * @level contains the protocol level to set options for.
918 * @optname contains the name of the option to set.
Eric Paris7b41b172008-04-23 14:10:25 -0400919 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700920 * @socket_shutdown:
921 * Checks permission before all or part of a connection on the socket
922 * @sock is shut down.
923 * @sock contains the socket structure.
924 * @how contains the flag indicating how future sends and receives are handled.
925 * Return 0 if permission is granted.
926 * @socket_sock_rcv_skb:
927 * Check permissions on incoming network packets. This hook is distinct
928 * from Netfilter's IP input hooks since it is the first time that the
929 * incoming sk_buff @skb has been associated with a particular socket, @sk.
Tetsuo Handa0ed73182010-01-06 09:23:54 +0900930 * Must not sleep inside this hook because some callers hold spinlocks.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700931 * @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.
Eric Paris2606fd12010-10-13 16:24:41 -0400975 * @secmark_relabel_packet:
976 * check if the process should be allowed to relabel packets to the given secid
977 * @security_secmark_refcount_inc
978 * tells the LSM to increment the number of secmark labeling rules loaded
979 * @security_secmark_refcount_dec
980 * tells the LSM to decrement the number of secmark labeling rules loaded
Venkat Yekkirala4237c752006-07-24 23:32:50 -0700981 * @req_classify_flow:
982 * Sets the flow's sid to the openreq sid.
Paul Moore2b980db2009-08-28 18:12:43 -0400983 * @tun_dev_create:
984 * Check permissions prior to creating a new TUN device.
985 * @tun_dev_post_create:
986 * This hook allows a module to update or allocate a per-socket security
987 * structure.
988 * @sk contains the newly created sock structure.
989 * @tun_dev_attach:
990 * Check permissions prior to attaching to a persistent TUN device. This
991 * hook can also be used by the module to update any security state
992 * associated with the TUN device's sock structure.
993 * @sk contains the existing sock structure.
Trent Jaegerdf718372005-12-13 23:12:27 -0800994 *
995 * Security hooks for XFRM operations.
996 *
997 * @xfrm_policy_alloc_security:
Paul Moore03e1ad72008-04-12 19:07:52 -0700998 * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
999 * Database used by the XFRM system.
Trent Jaegerdf718372005-12-13 23:12:27 -08001000 * @sec_ctx contains the security context information being provided by
1001 * the user-level policy update program (e.g., setkey).
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001002 * Allocate a security structure to the xp->security field; the security
Venkat Yekkiralac1a856c2006-11-08 17:03:44 -06001003 * field is initialized to NULL when the xfrm_policy is allocated.
Trent Jaegerdf718372005-12-13 23:12:27 -08001004 * Return 0 if operation was successful (memory to allocate, legal context)
1005 * @xfrm_policy_clone_security:
Paul Moore03e1ad72008-04-12 19:07:52 -07001006 * @old_ctx contains an existing xfrm_sec_ctx.
1007 * @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
1008 * Allocate a security structure in new_ctxp that contains the
1009 * information from the old_ctx structure.
Trent Jaegerdf718372005-12-13 23:12:27 -08001010 * Return 0 if operation was successful (memory to allocate).
1011 * @xfrm_policy_free_security:
Paul Moore03e1ad72008-04-12 19:07:52 -07001012 * @ctx contains the xfrm_sec_ctx
Catherine Zhangc8c05a82006-06-08 23:39:49 -07001013 * Deallocate xp->security.
1014 * @xfrm_policy_delete_security:
Paul Moore03e1ad72008-04-12 19:07:52 -07001015 * @ctx contains the xfrm_sec_ctx.
Catherine Zhangc8c05a82006-06-08 23:39:49 -07001016 * Authorize deletion of xp->security.
Trent Jaegerdf718372005-12-13 23:12:27 -08001017 * @xfrm_state_alloc_security:
1018 * @x contains the xfrm_state being added to the Security Association
1019 * Database by the XFRM system.
1020 * @sec_ctx contains the security context information being provided by
1021 * the user-level SA generation program (e.g., setkey or racoon).
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001022 * @secid contains the secid from which to take the mls portion of the context.
1023 * Allocate a security structure to the x->security field; the security
1024 * field is initialized to NULL when the xfrm_state is allocated. Set the
1025 * context to correspond to either sec_ctx or polsec, with the mls portion
1026 * taken from secid in the latter case.
Trent Jaegerdf718372005-12-13 23:12:27 -08001027 * Return 0 if operation was successful (memory to allocate, legal context).
1028 * @xfrm_state_free_security:
1029 * @x contains the xfrm_state.
Catherine Zhangc8c05a82006-06-08 23:39:49 -07001030 * Deallocate x->security.
1031 * @xfrm_state_delete_security:
1032 * @x contains the xfrm_state.
1033 * Authorize deletion of x->security.
Trent Jaegerdf718372005-12-13 23:12:27 -08001034 * @xfrm_policy_lookup:
Paul Moore03e1ad72008-04-12 19:07:52 -07001035 * @ctx contains the xfrm_sec_ctx for which the access control is being
Trent Jaegerdf718372005-12-13 23:12:27 -08001036 * checked.
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001037 * @fl_secid contains the flow security label that is used to authorize
Trent Jaegerdf718372005-12-13 23:12:27 -08001038 * access to the policy xp.
1039 * @dir contains the direction of the flow (input or output).
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001040 * Check permission when a flow selects a xfrm_policy for processing
Trent Jaegerdf718372005-12-13 23:12:27 -08001041 * XFRMs on a packet. The hook is called when selecting either a
1042 * per-socket policy or a generic xfrm policy.
Venkat Yekkirala5b368e62006-10-05 15:42:18 -05001043 * Return 0 if permission is granted, -ESRCH otherwise, or -errno
1044 * on other errors.
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001045 * @xfrm_state_pol_flow_match:
1046 * @x contains the state to match.
1047 * @xp contains the policy to check for a match.
1048 * @fl contains the flow to check for a match.
1049 * Return 1 if there is a match.
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001050 * @xfrm_decode_session:
1051 * @skb points to skb to decode.
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07001052 * @secid points to the flow key secid to set.
1053 * @ckall says if all xfrms used should be checked for same secid.
1054 * Return 0 if ckall is zero or all xfrms used have the same secid.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001055 *
David Howells29db9192005-10-30 15:02:44 -08001056 * Security hooks affecting all Key Management operations
1057 *
1058 * @key_alloc:
1059 * Permit allocation of a key and assign security data. Note that key does
1060 * not have a serial number assigned at this point.
1061 * @key points to the key.
David Howells7e047ef2006-06-26 00:24:50 -07001062 * @flags is the allocation flags
David Howells29db9192005-10-30 15:02:44 -08001063 * Return 0 if permission is granted, -ve error otherwise.
1064 * @key_free:
1065 * Notification of destruction; free security data.
1066 * @key points to the key.
1067 * No return value.
1068 * @key_permission:
1069 * See whether a specific operational right is granted to a process on a
Eric Paris7b41b172008-04-23 14:10:25 -04001070 * key.
David Howells29db9192005-10-30 15:02:44 -08001071 * @key_ref refers to the key (key pointer + possession attribute bit).
David Howellsd84f4f92008-11-14 10:39:23 +11001072 * @cred points to the credentials to provide the context against which to
Eric Paris7b41b172008-04-23 14:10:25 -04001073 * evaluate the security data on the key.
David Howells29db9192005-10-30 15:02:44 -08001074 * @perm describes the combination of permissions required of this key.
Tetsuo Handaad9c2b02010-11-30 11:06:47 +09001075 * Return 0 if permission is granted, -ve error otherwise.
David Howells70a5bb72008-04-29 01:01:26 -07001076 * @key_getsecurity:
1077 * Get a textual representation of the security context attached to a key
1078 * for the purposes of honouring KEYCTL_GETSECURITY. This function
1079 * allocates the storage for the NUL-terminated string and the caller
1080 * should free it.
1081 * @key points to the key to be queried.
1082 * @_buffer points to a pointer that should be set to point to the
1083 * resulting string (if no label or an error occurs).
1084 * Return the length of the string (including terminating NUL) or -ve if
1085 * an error.
1086 * May also return 0 (and a NULL buffer pointer) if there is no label.
David Howells29db9192005-10-30 15:02:44 -08001087 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07001088 * Security hooks affecting all System V IPC operations.
1089 *
1090 * @ipc_permission:
1091 * Check permissions for access to IPC
1092 * @ipcp contains the kernel IPC permission structure
1093 * @flag contains the desired (requested) permission set
1094 * Return 0 if permission is granted.
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02001095 * @ipc_getsecid:
1096 * Get the secid associated with the ipc object.
1097 * @ipcp contains the kernel IPC permission structure.
1098 * @secid contains a pointer to the location where result will be saved.
1099 * In case of failure, @secid will be set to zero.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001100 *
1101 * Security hooks for individual messages held in System V IPC message queues
1102 * @msg_msg_alloc_security:
1103 * Allocate and attach a security structure to the msg->security field.
1104 * The security field is initialized to NULL when the structure is first
1105 * created.
1106 * @msg contains the message structure to be modified.
1107 * Return 0 if operation was successful and permission is granted.
1108 * @msg_msg_free_security:
1109 * Deallocate the security structure for this message.
1110 * @msg contains the message structure to be modified.
1111 *
1112 * Security hooks for System V IPC Message Queues
1113 *
1114 * @msg_queue_alloc_security:
1115 * Allocate and attach a security structure to the
1116 * msq->q_perm.security field. The security field is initialized to
1117 * NULL when the structure is first created.
1118 * @msq contains the message queue structure to be modified.
1119 * Return 0 if operation was successful and permission is granted.
1120 * @msg_queue_free_security:
1121 * Deallocate security structure for this message queue.
1122 * @msq contains the message queue structure to be modified.
1123 * @msg_queue_associate:
1124 * Check permission when a message queue is requested through the
1125 * msgget system call. This hook is only called when returning the
1126 * message queue identifier for an existing message queue, not when a
1127 * new message queue is created.
1128 * @msq contains the message queue to act upon.
1129 * @msqflg contains the operation control flags.
1130 * Return 0 if permission is granted.
1131 * @msg_queue_msgctl:
1132 * Check permission when a message control operation specified by @cmd
1133 * is to be performed on the message queue @msq.
1134 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
1135 * @msq contains the message queue to act upon. May be NULL.
1136 * @cmd contains the operation to be performed.
Eric Paris7b41b172008-04-23 14:10:25 -04001137 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001138 * @msg_queue_msgsnd:
1139 * Check permission before a message, @msg, is enqueued on the message
1140 * queue, @msq.
1141 * @msq contains the message queue to send message to.
1142 * @msg contains the message to be enqueued.
1143 * @msqflg contains operational flags.
1144 * Return 0 if permission is granted.
1145 * @msg_queue_msgrcv:
1146 * Check permission before a message, @msg, is removed from the message
Eric Paris7b41b172008-04-23 14:10:25 -04001147 * queue, @msq. The @target task structure contains a pointer to the
1148 * process that will be receiving the message (not equal to the current
Linus Torvalds1da177e2005-04-16 15:20:36 -07001149 * process when inline receives are being performed).
1150 * @msq contains the message queue to retrieve message from.
1151 * @msg contains the message destination.
1152 * @target contains the task structure for recipient process.
1153 * @type contains the type of message requested.
1154 * @mode contains the operational flags.
1155 * Return 0 if permission is granted.
1156 *
1157 * Security hooks for System V Shared Memory Segments
1158 *
1159 * @shm_alloc_security:
1160 * Allocate and attach a security structure to the shp->shm_perm.security
1161 * field. The security field is initialized to NULL when the structure is
1162 * first created.
1163 * @shp contains the shared memory structure to be modified.
1164 * Return 0 if operation was successful and permission is granted.
1165 * @shm_free_security:
1166 * Deallocate the security struct for this memory segment.
1167 * @shp contains the shared memory structure to be modified.
1168 * @shm_associate:
1169 * Check permission when a shared memory region is requested through the
1170 * shmget system call. This hook is only called when returning the shared
1171 * memory region identifier for an existing region, not when a new shared
1172 * memory region is created.
1173 * @shp contains the shared memory structure to be modified.
1174 * @shmflg contains the operation control flags.
1175 * Return 0 if permission is granted.
1176 * @shm_shmctl:
1177 * Check permission when a shared memory control operation specified by
1178 * @cmd is to be performed on the shared memory region @shp.
1179 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1180 * @shp contains shared memory structure to be modified.
1181 * @cmd contains the operation to be performed.
1182 * Return 0 if permission is granted.
1183 * @shm_shmat:
1184 * Check permissions prior to allowing the shmat system call to attach the
1185 * shared memory segment @shp to the data segment of the calling process.
1186 * The attaching address is specified by @shmaddr.
1187 * @shp contains the shared memory structure to be modified.
1188 * @shmaddr contains the address to attach memory region to.
1189 * @shmflg contains the operational flags.
1190 * Return 0 if permission is granted.
1191 *
1192 * Security hooks for System V Semaphores
1193 *
1194 * @sem_alloc_security:
1195 * Allocate and attach a security structure to the sma->sem_perm.security
1196 * field. The security field is initialized to NULL when the structure is
1197 * first created.
1198 * @sma contains the semaphore structure
1199 * Return 0 if operation was successful and permission is granted.
1200 * @sem_free_security:
1201 * deallocate security struct for this semaphore
1202 * @sma contains the semaphore structure.
1203 * @sem_associate:
1204 * Check permission when a semaphore is requested through the semget
1205 * system call. This hook is only called when returning the semaphore
1206 * identifier for an existing semaphore, not when a new one must be
1207 * created.
1208 * @sma contains the semaphore structure.
1209 * @semflg contains the operation control flags.
1210 * Return 0 if permission is granted.
1211 * @sem_semctl:
1212 * Check permission when a semaphore operation specified by @cmd is to be
Eric Paris7b41b172008-04-23 14:10:25 -04001213 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
Linus Torvalds1da177e2005-04-16 15:20:36 -07001214 * IPC_INFO or SEM_INFO.
1215 * @sma contains the semaphore structure. May be NULL.
1216 * @cmd contains the operation to be performed.
1217 * Return 0 if permission is granted.
1218 * @sem_semop
1219 * Check permissions before performing operations on members of the
Eric Paris7b41b172008-04-23 14:10:25 -04001220 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1221 * may be modified.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001222 * @sma contains the semaphore structure.
1223 * @sops contains the operations to perform.
1224 * @nsops contains the number of operations to perform.
1225 * @alter contains the flag indicating whether changes are to be made.
1226 * Return 0 if permission is granted.
1227 *
Ingo Molnar9e488582009-05-07 19:26:19 +10001228 * @ptrace_access_check:
David Howells5cd9c582008-08-14 11:37:28 +01001229 * Check permission before allowing the current process to trace the
Linus Torvalds1da177e2005-04-16 15:20:36 -07001230 * @child process.
1231 * Security modules may also want to perform a process tracing check
1232 * during an execve in the set_security or apply_creds hooks of
David Howellsd84f4f92008-11-14 10:39:23 +11001233 * tracing check during an execve in the bprm_set_creds hook of
Linus Torvalds1da177e2005-04-16 15:20:36 -07001234 * binprm_security_ops if the process is being traced and its security
1235 * attributes would be changed by the execve.
David Howells5cd9c582008-08-14 11:37:28 +01001236 * @child contains the task_struct structure for the target process.
Stephen Smalley006ebb42008-05-19 08:32:49 -04001237 * @mode contains the PTRACE_MODE flags indicating the form of access.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001238 * Return 0 if permission is granted.
David Howells5cd9c582008-08-14 11:37:28 +01001239 * @ptrace_traceme:
1240 * Check that the @parent process has sufficient permission to trace the
1241 * current process before allowing the current process to present itself
1242 * to the @parent process for tracing.
Ingo Molnar9e488582009-05-07 19:26:19 +10001243 * The parent process will still have to undergo the ptrace_access_check
David Howells5cd9c582008-08-14 11:37:28 +01001244 * checks before it is allowed to trace this one.
1245 * @parent contains the task_struct structure for debugger process.
1246 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001247 * @capget:
1248 * Get the @effective, @inheritable, and @permitted capability sets for
1249 * the @target process. The hook may also perform permission checking to
1250 * determine if the current process is allowed to see the capability sets
1251 * of the @target process.
1252 * @target contains the task_struct structure for target process.
1253 * @effective contains the effective capability set.
1254 * @inheritable contains the inheritable capability set.
1255 * @permitted contains the permitted capability set.
1256 * Return 0 if the capability sets were successfully obtained.
David Howellsd84f4f92008-11-14 10:39:23 +11001257 * @capset:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001258 * Set the @effective, @inheritable, and @permitted capability sets for
David Howells1cdcbec2008-11-14 10:39:14 +11001259 * the current process.
David Howellsd84f4f92008-11-14 10:39:23 +11001260 * @new contains the new credentials structure for target process.
1261 * @old contains the current credentials structure for target process.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001262 * @effective contains the effective capability set.
1263 * @inheritable contains the inheritable capability set.
1264 * @permitted contains the permitted capability set.
David Howellsd84f4f92008-11-14 10:39:23 +11001265 * Return 0 and update @new if permission is granted.
Chris Wright12b59892006-03-25 03:07:41 -08001266 * @capable:
David Howells3699c532009-01-06 22:27:01 +00001267 * Check whether the @tsk process has the @cap capability in the indicated
1268 * credentials.
Chris Wright12b59892006-03-25 03:07:41 -08001269 * @tsk contains the task_struct for the process.
David Howells3699c532009-01-06 22:27:01 +00001270 * @cred contains the credentials to use.
Serge E. Hallyn34867402011-03-23 16:43:17 -07001271 * @ns contains the user namespace we want the capability in
Chris Wright12b59892006-03-25 03:07:41 -08001272 * @cap contains the capability <include/linux/capability.h>.
David Howells3699c532009-01-06 22:27:01 +00001273 * @audit: Whether to write an audit message or not
Chris Wright12b59892006-03-25 03:07:41 -08001274 * Return 0 if the capability is granted for @tsk.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001275 * @syslog:
1276 * Check permission before accessing the kernel message ring or changing
1277 * logging to the console.
Eric Paris7b41b172008-04-23 14:10:25 -04001278 * See the syslog(2) manual page for an explanation of the @type values.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001279 * @type contains the type of action.
Kees Cook00234592010-02-03 15:36:43 -08001280 * @from_file indicates the context of action (if it came from /proc).
Linus Torvalds1da177e2005-04-16 15:20:36 -07001281 * Return 0 if permission is granted.
1282 * @settime:
1283 * Check permission to change the system time.
1284 * struct timespec and timezone are defined in include/linux/time.h
1285 * @ts contains new time
1286 * @tz contains new timezone
1287 * Return 0 if permission is granted.
1288 * @vm_enough_memory:
1289 * Check permissions for allocating a new virtual mapping.
Alan Cox34b4e4a2007-08-22 14:01:28 -07001290 * @mm contains the mm struct it is being added to.
Eric Paris7b41b172008-04-23 14:10:25 -04001291 * @pages contains the number of pages.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001292 * Return 0 if permission is granted.
1293 *
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07001294 * @secid_to_secctx:
Eric Parisd5630b92010-10-13 16:24:48 -04001295 * Convert secid to security context. If secdata is NULL the length of
1296 * the result will be returned in seclen, but no secdata will be returned.
1297 * This does mean that the length could change between calls to check the
1298 * length and the next call which actually allocates and returns the secdata.
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07001299 * @secid contains the security ID.
1300 * @secdata contains the pointer that stores the converted security context.
Eric Parisd5630b92010-10-13 16:24:48 -04001301 * @seclen pointer which contains the length of the data
David Howells63cb3442008-01-15 23:47:35 +00001302 * @secctx_to_secid:
Eric Paris7b41b172008-04-23 14:10:25 -04001303 * Convert security context to secid.
1304 * @secid contains the pointer to the generated security ID.
1305 * @secdata contains the security context.
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07001306 *
1307 * @release_secctx:
1308 * Release the security context.
1309 * @secdata contains the security context.
1310 * @seclen contains the length of the security context.
1311 *
Ahmed S. Darwish03d37d22008-03-01 22:00:05 +02001312 * Security hooks for Audit
1313 *
1314 * @audit_rule_init:
1315 * Allocate and initialize an LSM audit rule structure.
1316 * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
1317 * @op contains the operator the rule uses.
1318 * @rulestr contains the context where the rule will be applied to.
1319 * @lsmrule contains a pointer to receive the result.
1320 * Return 0 if @lsmrule has been successfully set,
1321 * -EINVAL in case of an invalid rule.
1322 *
1323 * @audit_rule_known:
1324 * Specifies whether given @rule contains any fields related to current LSM.
1325 * @rule contains the audit rule of interest.
1326 * Return 1 in case of relation found, 0 otherwise.
1327 *
1328 * @audit_rule_match:
1329 * Determine if given @secid matches a rule previously approved
1330 * by @audit_rule_known.
1331 * @secid contains the security id in question.
1332 * @field contains the field which relates to current LSM.
1333 * @op contains the operator that will be used for matching.
1334 * @rule points to the audit rule that will be checked against.
1335 * @actx points to the audit context associated with the check.
1336 * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
1337 *
1338 * @audit_rule_free:
1339 * Deallocate the LSM audit rule structure previously allocated by
1340 * audit_rule_init.
1341 * @rule contains the allocated rule
1342 *
David P. Quigley1ee65e32009-09-03 14:25:57 -04001343 * @inode_notifysecctx:
1344 * Notify the security module of what the security context of an inode
1345 * should be. Initializes the incore security context managed by the
1346 * security module for this inode. Example usage: NFS client invokes
1347 * this hook to initialize the security context in its incore inode to the
1348 * value provided by the server for the file when the server returned the
1349 * file's attributes to the client.
1350 *
1351 * Must be called with inode->i_mutex locked.
1352 *
1353 * @inode we wish to set the security context of.
1354 * @ctx contains the string which we wish to set in the inode.
1355 * @ctxlen contains the length of @ctx.
1356 *
1357 * @inode_setsecctx:
1358 * Change the security context of an inode. Updates the
1359 * incore security context managed by the security module and invokes the
1360 * fs code as needed (via __vfs_setxattr_noperm) to update any backing
1361 * xattrs that represent the context. Example usage: NFS server invokes
1362 * this hook to change the security context in its incore inode and on the
1363 * backing filesystem to a value provided by the client on a SETATTR
1364 * operation.
1365 *
1366 * Must be called with inode->i_mutex locked.
1367 *
1368 * @dentry contains the inode we wish to set the security context of.
1369 * @ctx contains the string which we wish to set in the inode.
1370 * @ctxlen contains the length of @ctx.
1371 *
1372 * @inode_getsecctx:
1373 * Returns a string containing all relavent security context information
1374 *
rongqing.li@windriver.comfc9ff9b2011-09-06 11:35:36 +08001375 * @inode we wish to get the security context of.
David P. Quigley1ee65e32009-09-03 14:25:57 -04001376 * @ctx is a pointer in which to place the allocated security context.
1377 * @ctxlen points to the place to put the length of @ctx.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001378 * This is the main security structure.
1379 */
1380struct security_operations {
Ahmed S. Darwish076c54c2008-03-06 18:09:10 +02001381 char name[SECURITY_NAME_MAX + 1];
1382
Ingo Molnar9e488582009-05-07 19:26:19 +10001383 int (*ptrace_access_check) (struct task_struct *child, unsigned int mode);
David Howells5cd9c582008-08-14 11:37:28 +01001384 int (*ptrace_traceme) (struct task_struct *parent);
Eric Paris7b41b172008-04-23 14:10:25 -04001385 int (*capget) (struct task_struct *target,
1386 kernel_cap_t *effective,
1387 kernel_cap_t *inheritable, kernel_cap_t *permitted);
David Howellsd84f4f92008-11-14 10:39:23 +11001388 int (*capset) (struct cred *new,
1389 const struct cred *old,
1390 const kernel_cap_t *effective,
1391 const kernel_cap_t *inheritable,
1392 const kernel_cap_t *permitted);
David Howells3699c532009-01-06 22:27:01 +00001393 int (*capable) (struct task_struct *tsk, const struct cred *cred,
Serge E. Hallyn34867402011-03-23 16:43:17 -07001394 struct user_namespace *ns, int cap, int audit);
Eric Paris7b41b172008-04-23 14:10:25 -04001395 int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
1396 int (*quota_on) (struct dentry *dentry);
Eric Paris12b30522010-11-15 18:36:29 -05001397 int (*syslog) (int type);
Richard Cochran1e6d7672011-02-01 13:50:58 +00001398 int (*settime) (const struct timespec *ts, const struct timezone *tz);
Alan Cox34b4e4a2007-08-22 14:01:28 -07001399 int (*vm_enough_memory) (struct mm_struct *mm, long pages);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001400
David Howellsa6f76f22008-11-14 10:39:24 +11001401 int (*bprm_set_creds) (struct linux_binprm *bprm);
Eric Paris7b41b172008-04-23 14:10:25 -04001402 int (*bprm_check_security) (struct linux_binprm *bprm);
1403 int (*bprm_secureexec) (struct linux_binprm *bprm);
David Howellsa6f76f22008-11-14 10:39:24 +11001404 void (*bprm_committing_creds) (struct linux_binprm *bprm);
1405 void (*bprm_committed_creds) (struct linux_binprm *bprm);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001406
Eric Paris7b41b172008-04-23 14:10:25 -04001407 int (*sb_alloc_security) (struct super_block *sb);
1408 void (*sb_free_security) (struct super_block *sb);
1409 int (*sb_copy_data) (char *orig, char *copy);
Eric Parisff36fe22011-03-03 16:09:14 -05001410 int (*sb_remount) (struct super_block *sb, void *data);
James Morris12204e22008-12-19 10:44:42 +11001411 int (*sb_kern_mount) (struct super_block *sb, int flags, void *data);
Eric Paris2069f452008-07-04 09:47:13 +10001412 int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
David Howells726c3342006-06-23 02:02:58 -07001413 int (*sb_statfs) (struct dentry *dentry);
Al Virob5266eb2008-03-22 17:48:24 -04001414 int (*sb_mount) (char *dev_name, struct path *path,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001415 char *type, unsigned long flags, void *data);
Eric Paris7b41b172008-04-23 14:10:25 -04001416 int (*sb_umount) (struct vfsmount *mnt, int flags);
Al Virob5266eb2008-03-22 17:48:24 -04001417 int (*sb_pivotroot) (struct path *old_path,
1418 struct path *new_path);
Eric Parise0007522008-03-05 10:31:54 -05001419 int (*sb_set_mnt_opts) (struct super_block *sb,
1420 struct security_mnt_opts *opts);
Eric Parisc9180a52007-11-30 13:00:35 -05001421 void (*sb_clone_mnt_opts) (const struct super_block *oldsb,
1422 struct super_block *newsb);
Eric Parise0007522008-03-05 10:31:54 -05001423 int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001424
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09001425#ifdef CONFIG_SECURITY_PATH
1426 int (*path_unlink) (struct path *dir, struct dentry *dentry);
1427 int (*path_mkdir) (struct path *dir, struct dentry *dentry, int mode);
1428 int (*path_rmdir) (struct path *dir, struct dentry *dentry);
1429 int (*path_mknod) (struct path *dir, struct dentry *dentry, int mode,
1430 unsigned int dev);
Tetsuo Handaea0d3ab2010-06-02 13:24:43 +09001431 int (*path_truncate) (struct path *path);
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09001432 int (*path_symlink) (struct path *dir, struct dentry *dentry,
1433 const char *old_name);
1434 int (*path_link) (struct dentry *old_dentry, struct path *new_dir,
1435 struct dentry *new_dentry);
1436 int (*path_rename) (struct path *old_dir, struct dentry *old_dentry,
1437 struct path *new_dir, struct dentry *new_dentry);
Tetsuo Handa89eda062009-10-04 21:49:47 +09001438 int (*path_chmod) (struct dentry *dentry, struct vfsmount *mnt,
Al Viro910f4ece2011-07-26 04:25:58 -04001439 umode_t mode);
Tetsuo Handa89eda062009-10-04 21:49:47 +09001440 int (*path_chown) (struct path *path, uid_t uid, gid_t gid);
Tetsuo Handa8b8efb42009-10-04 21:49:48 +09001441 int (*path_chroot) (struct path *path);
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09001442#endif
1443
Eric Paris7b41b172008-04-23 14:10:25 -04001444 int (*inode_alloc_security) (struct inode *inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001445 void (*inode_free_security) (struct inode *inode);
Stephen Smalley5e41ff92005-09-09 13:01:35 -07001446 int (*inode_init_security) (struct inode *inode, struct inode *dir,
Eric Paris2a7dba32011-02-01 11:05:39 -05001447 const struct qstr *qstr, char **name,
1448 void **value, size_t *len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001449 int (*inode_create) (struct inode *dir,
Al Viro4acdaf22011-07-26 01:42:34 -04001450 struct dentry *dentry, umode_t mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001451 int (*inode_link) (struct dentry *old_dentry,
Eric Paris7b41b172008-04-23 14:10:25 -04001452 struct inode *dir, struct dentry *new_dentry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001453 int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
1454 int (*inode_symlink) (struct inode *dir,
Eric Paris7b41b172008-04-23 14:10:25 -04001455 struct dentry *dentry, const char *old_name);
Al Viro18bb1db2011-07-26 01:41:39 -04001456 int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, umode_t mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001457 int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
1458 int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
Al Viro1a67aaf2011-07-26 01:52:52 -04001459 umode_t mode, dev_t dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001460 int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
Eric Paris7b41b172008-04-23 14:10:25 -04001461 struct inode *new_dir, struct dentry *new_dentry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001462 int (*inode_readlink) (struct dentry *dentry);
1463 int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
Al Viroe74f71e2011-06-20 19:38:15 -04001464 int (*inode_permission) (struct inode *inode, int mask);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001465 int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
1466 int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
David Howells8f0cfa52008-04-29 00:59:41 -07001467 int (*inode_setxattr) (struct dentry *dentry, const char *name,
1468 const void *value, size_t size, int flags);
1469 void (*inode_post_setxattr) (struct dentry *dentry, const char *name,
1470 const void *value, size_t size, int flags);
1471 int (*inode_getxattr) (struct dentry *dentry, const char *name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001472 int (*inode_listxattr) (struct dentry *dentry);
David Howells8f0cfa52008-04-29 00:59:41 -07001473 int (*inode_removexattr) (struct dentry *dentry, const char *name);
Serge E. Hallynb5376772007-10-16 23:31:36 -07001474 int (*inode_need_killpriv) (struct dentry *dentry);
1475 int (*inode_killpriv) (struct dentry *dentry);
Eric Paris7b41b172008-04-23 14:10:25 -04001476 int (*inode_getsecurity) (const struct inode *inode, const char *name, void **buffer, bool alloc);
1477 int (*inode_setsecurity) (struct inode *inode, const char *name, const void *value, size_t size, int flags);
1478 int (*inode_listsecurity) (struct inode *inode, char *buffer, size_t buffer_size);
1479 void (*inode_getsecid) (const struct inode *inode, u32 *secid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001480
Eric Paris7b41b172008-04-23 14:10:25 -04001481 int (*file_permission) (struct file *file, int mask);
1482 int (*file_alloc_security) (struct file *file);
1483 void (*file_free_security) (struct file *file);
1484 int (*file_ioctl) (struct file *file, unsigned int cmd,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001485 unsigned long arg);
Eric Paris7b41b172008-04-23 14:10:25 -04001486 int (*file_mmap) (struct file *file,
Eric Parised032182007-06-28 15:55:21 -04001487 unsigned long reqprot, unsigned long prot,
1488 unsigned long flags, unsigned long addr,
1489 unsigned long addr_only);
Eric Paris7b41b172008-04-23 14:10:25 -04001490 int (*file_mprotect) (struct vm_area_struct *vma,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001491 unsigned long reqprot,
1492 unsigned long prot);
Eric Paris7b41b172008-04-23 14:10:25 -04001493 int (*file_lock) (struct file *file, unsigned int cmd);
1494 int (*file_fcntl) (struct file *file, unsigned int cmd,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001495 unsigned long arg);
Eric Paris7b41b172008-04-23 14:10:25 -04001496 int (*file_set_fowner) (struct file *file);
1497 int (*file_send_sigiotask) (struct task_struct *tsk,
1498 struct fown_struct *fown, int sig);
1499 int (*file_receive) (struct file *file);
David Howells745ca242008-11-14 10:39:22 +11001500 int (*dentry_open) (struct file *file, const struct cred *cred);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001501
1502 int (*task_create) (unsigned long clone_flags);
David Howellsee18d642009-09-02 09:14:21 +01001503 int (*cred_alloc_blank) (struct cred *cred, gfp_t gfp);
David Howellsf1752ee2008-11-14 10:39:17 +11001504 void (*cred_free) (struct cred *cred);
David Howellsd84f4f92008-11-14 10:39:23 +11001505 int (*cred_prepare)(struct cred *new, const struct cred *old,
1506 gfp_t gfp);
David Howellsee18d642009-09-02 09:14:21 +01001507 void (*cred_transfer)(struct cred *new, const struct cred *old);
David Howells3a3b7ce2008-11-14 10:39:28 +11001508 int (*kernel_act_as)(struct cred *new, u32 secid);
1509 int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
Eric Parisdd8dbf22009-11-03 16:35:32 +11001510 int (*kernel_module_request)(char *kmod_name);
David Howellsd84f4f92008-11-14 10:39:23 +11001511 int (*task_fix_setuid) (struct cred *new, const struct cred *old,
1512 int flags);
Eric Paris7b41b172008-04-23 14:10:25 -04001513 int (*task_setpgid) (struct task_struct *p, pid_t pgid);
1514 int (*task_getpgid) (struct task_struct *p);
1515 int (*task_getsid) (struct task_struct *p);
1516 void (*task_getsecid) (struct task_struct *p, u32 *secid);
Eric Paris7b41b172008-04-23 14:10:25 -04001517 int (*task_setnice) (struct task_struct *p, int nice);
1518 int (*task_setioprio) (struct task_struct *p, int ioprio);
1519 int (*task_getioprio) (struct task_struct *p);
Jiri Slaby8fd00b42009-08-26 18:41:16 +02001520 int (*task_setrlimit) (struct task_struct *p, unsigned int resource,
1521 struct rlimit *new_rlim);
KOSAKI Motohirob0ae1982010-10-15 04:21:18 +09001522 int (*task_setscheduler) (struct task_struct *p);
Eric Paris7b41b172008-04-23 14:10:25 -04001523 int (*task_getscheduler) (struct task_struct *p);
1524 int (*task_movememory) (struct task_struct *p);
1525 int (*task_kill) (struct task_struct *p,
1526 struct siginfo *info, int sig, u32 secid);
1527 int (*task_wait) (struct task_struct *p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001528 int (*task_prctl) (int option, unsigned long arg2,
1529 unsigned long arg3, unsigned long arg4,
David Howellsd84f4f92008-11-14 10:39:23 +11001530 unsigned long arg5);
Eric Paris7b41b172008-04-23 14:10:25 -04001531 void (*task_to_inode) (struct task_struct *p, struct inode *inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001532
Eric Paris7b41b172008-04-23 14:10:25 -04001533 int (*ipc_permission) (struct kern_ipc_perm *ipcp, short flag);
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02001534 void (*ipc_getsecid) (struct kern_ipc_perm *ipcp, u32 *secid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001535
Eric Paris7b41b172008-04-23 14:10:25 -04001536 int (*msg_msg_alloc_security) (struct msg_msg *msg);
1537 void (*msg_msg_free_security) (struct msg_msg *msg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001538
Eric Paris7b41b172008-04-23 14:10:25 -04001539 int (*msg_queue_alloc_security) (struct msg_queue *msq);
1540 void (*msg_queue_free_security) (struct msg_queue *msq);
1541 int (*msg_queue_associate) (struct msg_queue *msq, int msqflg);
1542 int (*msg_queue_msgctl) (struct msg_queue *msq, int cmd);
1543 int (*msg_queue_msgsnd) (struct msg_queue *msq,
1544 struct msg_msg *msg, int msqflg);
1545 int (*msg_queue_msgrcv) (struct msg_queue *msq,
1546 struct msg_msg *msg,
1547 struct task_struct *target,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001548 long type, int mode);
1549
Eric Paris7b41b172008-04-23 14:10:25 -04001550 int (*shm_alloc_security) (struct shmid_kernel *shp);
1551 void (*shm_free_security) (struct shmid_kernel *shp);
1552 int (*shm_associate) (struct shmid_kernel *shp, int shmflg);
1553 int (*shm_shmctl) (struct shmid_kernel *shp, int cmd);
1554 int (*shm_shmat) (struct shmid_kernel *shp,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001555 char __user *shmaddr, int shmflg);
1556
Eric Paris7b41b172008-04-23 14:10:25 -04001557 int (*sem_alloc_security) (struct sem_array *sma);
1558 void (*sem_free_security) (struct sem_array *sma);
1559 int (*sem_associate) (struct sem_array *sma, int semflg);
1560 int (*sem_semctl) (struct sem_array *sma, int cmd);
1561 int (*sem_semop) (struct sem_array *sma,
1562 struct sembuf *sops, unsigned nsops, int alter);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001563
Eric Paris7b41b172008-04-23 14:10:25 -04001564 int (*netlink_send) (struct sock *sk, struct sk_buff *skb);
1565 int (*netlink_recv) (struct sk_buff *skb, int cap);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001566
Linus Torvalds1da177e2005-04-16 15:20:36 -07001567 void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1568
Eric Paris7b41b172008-04-23 14:10:25 -04001569 int (*getprocattr) (struct task_struct *p, char *name, char **value);
1570 int (*setprocattr) (struct task_struct *p, char *name, void *value, size_t size);
1571 int (*secid_to_secctx) (u32 secid, char **secdata, u32 *seclen);
David Howells7bf570d2008-04-29 20:52:51 +01001572 int (*secctx_to_secid) (const char *secdata, u32 seclen, u32 *secid);
Eric Paris7b41b172008-04-23 14:10:25 -04001573 void (*release_secctx) (char *secdata, u32 seclen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001574
David P. Quigley1ee65e32009-09-03 14:25:57 -04001575 int (*inode_notifysecctx)(struct inode *inode, void *ctx, u32 ctxlen);
1576 int (*inode_setsecctx)(struct dentry *dentry, void *ctx, u32 ctxlen);
1577 int (*inode_getsecctx)(struct inode *inode, void **ctx, u32 *ctxlen);
1578
Linus Torvalds1da177e2005-04-16 15:20:36 -07001579#ifdef CONFIG_SECURITY_NETWORK
David S. Miller3610cda2011-01-05 15:38:53 -08001580 int (*unix_stream_connect) (struct sock *sock, struct sock *other, struct sock *newsk);
Eric Paris7b41b172008-04-23 14:10:25 -04001581 int (*unix_may_send) (struct socket *sock, struct socket *other);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001582
1583 int (*socket_create) (int family, int type, int protocol, int kern);
Eric Paris7b41b172008-04-23 14:10:25 -04001584 int (*socket_post_create) (struct socket *sock, int family,
Venkat Yekkirala7420ed22006-08-04 23:17:57 -07001585 int type, int protocol, int kern);
Eric Paris7b41b172008-04-23 14:10:25 -04001586 int (*socket_bind) (struct socket *sock,
1587 struct sockaddr *address, int addrlen);
1588 int (*socket_connect) (struct socket *sock,
1589 struct sockaddr *address, int addrlen);
1590 int (*socket_listen) (struct socket *sock, int backlog);
1591 int (*socket_accept) (struct socket *sock, struct socket *newsock);
Eric Paris7b41b172008-04-23 14:10:25 -04001592 int (*socket_sendmsg) (struct socket *sock,
1593 struct msghdr *msg, int size);
1594 int (*socket_recvmsg) (struct socket *sock,
1595 struct msghdr *msg, int size, int flags);
1596 int (*socket_getsockname) (struct socket *sock);
1597 int (*socket_getpeername) (struct socket *sock);
1598 int (*socket_getsockopt) (struct socket *sock, int level, int optname);
1599 int (*socket_setsockopt) (struct socket *sock, int level, int optname);
1600 int (*socket_shutdown) (struct socket *sock, int how);
1601 int (*socket_sock_rcv_skb) (struct sock *sk, struct sk_buff *skb);
Catherine Zhang2c7946a2006-03-20 22:41:23 -08001602 int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07001603 int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
Al Viro7d877f32005-10-21 03:20:43 -04001604 int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001605 void (*sk_free_security) (struct sock *sk);
Venkat Yekkirala892c1412006-08-04 23:08:56 -07001606 void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07001607 void (*sk_getsecid) (struct sock *sk, u32 *secid);
Eric Paris7b41b172008-04-23 14:10:25 -04001608 void (*sock_graft) (struct sock *sk, struct socket *parent);
1609 int (*inet_conn_request) (struct sock *sk, struct sk_buff *skb,
1610 struct request_sock *req);
1611 void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req);
1612 void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb);
Eric Paris2606fd12010-10-13 16:24:41 -04001613 int (*secmark_relabel_packet) (u32 secid);
1614 void (*secmark_refcount_inc) (void);
1615 void (*secmark_refcount_dec) (void);
Eric Paris7b41b172008-04-23 14:10:25 -04001616 void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
Paul Moore2b980db2009-08-28 18:12:43 -04001617 int (*tun_dev_create)(void);
1618 void (*tun_dev_post_create)(struct sock *sk);
1619 int (*tun_dev_attach)(struct sock *sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001620#endif /* CONFIG_SECURITY_NETWORK */
David Howells29db9192005-10-30 15:02:44 -08001621
Trent Jaegerdf718372005-12-13 23:12:27 -08001622#ifdef CONFIG_SECURITY_NETWORK_XFRM
Paul Moore03e1ad72008-04-12 19:07:52 -07001623 int (*xfrm_policy_alloc_security) (struct xfrm_sec_ctx **ctxp,
Venkat Yekkiralac1a856c2006-11-08 17:03:44 -06001624 struct xfrm_user_sec_ctx *sec_ctx);
Paul Moore03e1ad72008-04-12 19:07:52 -07001625 int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
1626 void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
1627 int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001628 int (*xfrm_state_alloc_security) (struct xfrm_state *x,
Venkat Yekkiralac1a856c2006-11-08 17:03:44 -06001629 struct xfrm_user_sec_ctx *sec_ctx,
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001630 u32 secid);
Trent Jaegerdf718372005-12-13 23:12:27 -08001631 void (*xfrm_state_free_security) (struct xfrm_state *x);
Catherine Zhangc8c05a82006-06-08 23:39:49 -07001632 int (*xfrm_state_delete_security) (struct xfrm_state *x);
Eric Paris7b41b172008-04-23 14:10:25 -04001633 int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1634 int (*xfrm_state_pol_flow_match) (struct xfrm_state *x,
1635 struct xfrm_policy *xp,
David S. Millere33f7702011-02-22 18:13:15 -08001636 const struct flowi *fl);
Eric Paris7b41b172008-04-23 14:10:25 -04001637 int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall);
Trent Jaegerdf718372005-12-13 23:12:27 -08001638#endif /* CONFIG_SECURITY_NETWORK_XFRM */
1639
David Howells29db9192005-10-30 15:02:44 -08001640 /* key management security hooks */
1641#ifdef CONFIG_KEYS
David Howellsd84f4f92008-11-14 10:39:23 +11001642 int (*key_alloc) (struct key *key, const struct cred *cred, unsigned long flags);
Eric Paris7b41b172008-04-23 14:10:25 -04001643 void (*key_free) (struct key *key);
1644 int (*key_permission) (key_ref_t key_ref,
David Howellsd84f4f92008-11-14 10:39:23 +11001645 const struct cred *cred,
Eric Paris7b41b172008-04-23 14:10:25 -04001646 key_perm_t perm);
David Howells70a5bb72008-04-29 01:01:26 -07001647 int (*key_getsecurity)(struct key *key, char **_buffer);
David Howells29db9192005-10-30 15:02:44 -08001648#endif /* CONFIG_KEYS */
1649
Ahmed S. Darwish03d37d22008-03-01 22:00:05 +02001650#ifdef CONFIG_AUDIT
Eric Paris7b41b172008-04-23 14:10:25 -04001651 int (*audit_rule_init) (u32 field, u32 op, char *rulestr, void **lsmrule);
1652 int (*audit_rule_known) (struct audit_krule *krule);
1653 int (*audit_rule_match) (u32 secid, u32 field, u32 op, void *lsmrule,
1654 struct audit_context *actx);
1655 void (*audit_rule_free) (void *lsmrule);
Ahmed S. Darwish03d37d22008-03-01 22:00:05 +02001656#endif /* CONFIG_AUDIT */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001657};
1658
Linus Torvalds1da177e2005-04-16 15:20:36 -07001659/* prototypes */
Eric Paris7b41b172008-04-23 14:10:25 -04001660extern int security_init(void);
Ahmed S. Darwish076c54c2008-03-06 18:09:10 +02001661extern int security_module_enable(struct security_operations *ops);
Eric Paris7b41b172008-04-23 14:10:25 -04001662extern int register_security(struct security_operations *ops);
James Morris5dbe3042011-08-30 13:48:53 +10001663extern void __init security_fixup_ops(struct security_operations *ops);
1664
Linus Torvalds1da177e2005-04-16 15:20:36 -07001665
James Morris20510f22007-10-16 23:31:32 -07001666/* Security operations */
Ingo Molnar9e488582009-05-07 19:26:19 +10001667int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
David Howells5cd9c582008-08-14 11:37:28 +01001668int security_ptrace_traceme(struct task_struct *parent);
James Morris20510f22007-10-16 23:31:32 -07001669int security_capget(struct task_struct *target,
Eric Paris7b41b172008-04-23 14:10:25 -04001670 kernel_cap_t *effective,
1671 kernel_cap_t *inheritable,
1672 kernel_cap_t *permitted);
David Howellsd84f4f92008-11-14 10:39:23 +11001673int security_capset(struct cred *new, const struct cred *old,
1674 const kernel_cap_t *effective,
1675 const kernel_cap_t *inheritable,
1676 const kernel_cap_t *permitted);
Serge E. Hallyn34867402011-03-23 16:43:17 -07001677int security_capable(struct user_namespace *ns, const struct cred *cred,
1678 int cap);
1679int security_real_capable(struct task_struct *tsk, struct user_namespace *ns,
1680 int cap);
1681int security_real_capable_noaudit(struct task_struct *tsk,
1682 struct user_namespace *ns, int cap);
James Morris20510f22007-10-16 23:31:32 -07001683int security_quotactl(int cmds, int type, int id, struct super_block *sb);
1684int security_quota_on(struct dentry *dentry);
Eric Paris12b30522010-11-15 18:36:29 -05001685int security_syslog(int type);
Richard Cochran1e6d7672011-02-01 13:50:58 +00001686int security_settime(const struct timespec *ts, const struct timezone *tz);
James Morris20510f22007-10-16 23:31:32 -07001687int security_vm_enough_memory(long pages);
1688int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
Alan Cox731572d2008-10-29 14:01:20 -07001689int security_vm_enough_memory_kern(long pages);
David Howellsa6f76f22008-11-14 10:39:24 +11001690int security_bprm_set_creds(struct linux_binprm *bprm);
James Morris20510f22007-10-16 23:31:32 -07001691int security_bprm_check(struct linux_binprm *bprm);
David Howellsa6f76f22008-11-14 10:39:24 +11001692void security_bprm_committing_creds(struct linux_binprm *bprm);
1693void security_bprm_committed_creds(struct linux_binprm *bprm);
James Morris20510f22007-10-16 23:31:32 -07001694int security_bprm_secureexec(struct linux_binprm *bprm);
1695int security_sb_alloc(struct super_block *sb);
1696void security_sb_free(struct super_block *sb);
Eric Parise0007522008-03-05 10:31:54 -05001697int security_sb_copy_data(char *orig, char *copy);
Eric Parisff36fe22011-03-03 16:09:14 -05001698int security_sb_remount(struct super_block *sb, void *data);
James Morris12204e22008-12-19 10:44:42 +11001699int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
Eric Paris2069f452008-07-04 09:47:13 +10001700int security_sb_show_options(struct seq_file *m, struct super_block *sb);
James Morris20510f22007-10-16 23:31:32 -07001701int security_sb_statfs(struct dentry *dentry);
Al Virob5266eb2008-03-22 17:48:24 -04001702int security_sb_mount(char *dev_name, struct path *path,
Eric Paris7b41b172008-04-23 14:10:25 -04001703 char *type, unsigned long flags, void *data);
James Morris20510f22007-10-16 23:31:32 -07001704int security_sb_umount(struct vfsmount *mnt, int flags);
Al Virob5266eb2008-03-22 17:48:24 -04001705int security_sb_pivotroot(struct path *old_path, struct path *new_path);
Eric Parise0007522008-03-05 10:31:54 -05001706int security_sb_set_mnt_opts(struct super_block *sb, struct security_mnt_opts *opts);
Eric Parisc9180a52007-11-30 13:00:35 -05001707void security_sb_clone_mnt_opts(const struct super_block *oldsb,
1708 struct super_block *newsb);
Eric Parise0007522008-03-05 10:31:54 -05001709int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
Eric Parisc9180a52007-11-30 13:00:35 -05001710
James Morris20510f22007-10-16 23:31:32 -07001711int security_inode_alloc(struct inode *inode);
1712void security_inode_free(struct inode *inode);
1713int security_inode_init_security(struct inode *inode, struct inode *dir,
Mimi Zohar9d8f13b2011-06-06 15:29:25 -04001714 const struct qstr *qstr,
1715 initxattrs initxattrs, void *fs_data);
1716int security_old_inode_init_security(struct inode *inode, struct inode *dir,
1717 const struct qstr *qstr, char **name,
1718 void **value, size_t *len);
Al Viro4acdaf22011-07-26 01:42:34 -04001719int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
James Morris20510f22007-10-16 23:31:32 -07001720int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1721 struct dentry *new_dentry);
1722int security_inode_unlink(struct inode *dir, struct dentry *dentry);
1723int security_inode_symlink(struct inode *dir, struct dentry *dentry,
Eric Paris7b41b172008-04-23 14:10:25 -04001724 const char *old_name);
Al Viro18bb1db2011-07-26 01:41:39 -04001725int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
James Morris20510f22007-10-16 23:31:32 -07001726int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
Al Viro1a67aaf2011-07-26 01:52:52 -04001727int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
James Morris20510f22007-10-16 23:31:32 -07001728int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
Eric Paris7b41b172008-04-23 14:10:25 -04001729 struct inode *new_dir, struct dentry *new_dentry);
James Morris20510f22007-10-16 23:31:32 -07001730int security_inode_readlink(struct dentry *dentry);
1731int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
Al Virob77b0642008-07-17 09:37:02 -04001732int security_inode_permission(struct inode *inode, int mask);
James Morris20510f22007-10-16 23:31:32 -07001733int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
1734int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
David Howells8f0cfa52008-04-29 00:59:41 -07001735int security_inode_setxattr(struct dentry *dentry, const char *name,
1736 const void *value, size_t size, int flags);
1737void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1738 const void *value, size_t size, int flags);
1739int security_inode_getxattr(struct dentry *dentry, const char *name);
James Morris20510f22007-10-16 23:31:32 -07001740int security_inode_listxattr(struct dentry *dentry);
David Howells8f0cfa52008-04-29 00:59:41 -07001741int security_inode_removexattr(struct dentry *dentry, const char *name);
Serge E. Hallynb5376772007-10-16 23:31:36 -07001742int security_inode_need_killpriv(struct dentry *dentry);
1743int security_inode_killpriv(struct dentry *dentry);
David P. Quigley42492592008-02-04 22:29:39 -08001744int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
James Morris20510f22007-10-16 23:31:32 -07001745int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1746int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02001747void security_inode_getsecid(const struct inode *inode, u32 *secid);
James Morris20510f22007-10-16 23:31:32 -07001748int security_file_permission(struct file *file, int mask);
1749int security_file_alloc(struct file *file);
1750void security_file_free(struct file *file);
1751int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
1752int security_file_mmap(struct file *file, unsigned long reqprot,
1753 unsigned long prot, unsigned long flags,
1754 unsigned long addr, unsigned long addr_only);
1755int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
Eric Paris7b41b172008-04-23 14:10:25 -04001756 unsigned long prot);
James Morris20510f22007-10-16 23:31:32 -07001757int security_file_lock(struct file *file, unsigned int cmd);
1758int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
1759int security_file_set_fowner(struct file *file);
1760int security_file_send_sigiotask(struct task_struct *tsk,
Eric Paris7b41b172008-04-23 14:10:25 -04001761 struct fown_struct *fown, int sig);
James Morris20510f22007-10-16 23:31:32 -07001762int security_file_receive(struct file *file);
David Howells745ca242008-11-14 10:39:22 +11001763int security_dentry_open(struct file *file, const struct cred *cred);
James Morris20510f22007-10-16 23:31:32 -07001764int security_task_create(unsigned long clone_flags);
David Howellsee18d642009-09-02 09:14:21 +01001765int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
David Howellsf1752ee2008-11-14 10:39:17 +11001766void security_cred_free(struct cred *cred);
David Howellsd84f4f92008-11-14 10:39:23 +11001767int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
David Howellsee18d642009-09-02 09:14:21 +01001768void security_transfer_creds(struct cred *new, const struct cred *old);
David Howells3a3b7ce2008-11-14 10:39:28 +11001769int security_kernel_act_as(struct cred *new, u32 secid);
1770int security_kernel_create_files_as(struct cred *new, struct inode *inode);
Eric Parisdd8dbf22009-11-03 16:35:32 +11001771int security_kernel_module_request(char *kmod_name);
David Howellsd84f4f92008-11-14 10:39:23 +11001772int security_task_fix_setuid(struct cred *new, const struct cred *old,
1773 int flags);
James Morris20510f22007-10-16 23:31:32 -07001774int security_task_setpgid(struct task_struct *p, pid_t pgid);
1775int security_task_getpgid(struct task_struct *p);
1776int security_task_getsid(struct task_struct *p);
1777void security_task_getsecid(struct task_struct *p, u32 *secid);
James Morris20510f22007-10-16 23:31:32 -07001778int security_task_setnice(struct task_struct *p, int nice);
1779int security_task_setioprio(struct task_struct *p, int ioprio);
1780int security_task_getioprio(struct task_struct *p);
Jiri Slaby8fd00b42009-08-26 18:41:16 +02001781int security_task_setrlimit(struct task_struct *p, unsigned int resource,
1782 struct rlimit *new_rlim);
KOSAKI Motohirob0ae1982010-10-15 04:21:18 +09001783int security_task_setscheduler(struct task_struct *p);
James Morris20510f22007-10-16 23:31:32 -07001784int security_task_getscheduler(struct task_struct *p);
1785int security_task_movememory(struct task_struct *p);
1786int security_task_kill(struct task_struct *p, struct siginfo *info,
1787 int sig, u32 secid);
1788int security_task_wait(struct task_struct *p);
1789int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
David Howellsd84f4f92008-11-14 10:39:23 +11001790 unsigned long arg4, unsigned long arg5);
James Morris20510f22007-10-16 23:31:32 -07001791void security_task_to_inode(struct task_struct *p, struct inode *inode);
1792int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02001793void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
James Morris20510f22007-10-16 23:31:32 -07001794int security_msg_msg_alloc(struct msg_msg *msg);
1795void security_msg_msg_free(struct msg_msg *msg);
1796int security_msg_queue_alloc(struct msg_queue *msq);
1797void security_msg_queue_free(struct msg_queue *msq);
1798int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
1799int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
1800int security_msg_queue_msgsnd(struct msg_queue *msq,
Eric Paris7b41b172008-04-23 14:10:25 -04001801 struct msg_msg *msg, int msqflg);
James Morris20510f22007-10-16 23:31:32 -07001802int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
Eric Paris7b41b172008-04-23 14:10:25 -04001803 struct task_struct *target, long type, int mode);
James Morris20510f22007-10-16 23:31:32 -07001804int security_shm_alloc(struct shmid_kernel *shp);
1805void security_shm_free(struct shmid_kernel *shp);
1806int security_shm_associate(struct shmid_kernel *shp, int shmflg);
1807int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
1808int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
1809int security_sem_alloc(struct sem_array *sma);
1810void security_sem_free(struct sem_array *sma);
1811int security_sem_associate(struct sem_array *sma, int semflg);
1812int security_sem_semctl(struct sem_array *sma, int cmd);
1813int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1814 unsigned nsops, int alter);
Eric Paris7b41b172008-04-23 14:10:25 -04001815void security_d_instantiate(struct dentry *dentry, struct inode *inode);
James Morris20510f22007-10-16 23:31:32 -07001816int security_getprocattr(struct task_struct *p, char *name, char **value);
1817int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
1818int security_netlink_send(struct sock *sk, struct sk_buff *skb);
1819int security_netlink_recv(struct sk_buff *skb, int cap);
1820int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
David Howells7bf570d2008-04-29 20:52:51 +01001821int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
James Morris20510f22007-10-16 23:31:32 -07001822void security_release_secctx(char *secdata, u32 seclen);
1823
David P. Quigley1ee65e32009-09-03 14:25:57 -04001824int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
1825int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
1826int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001827#else /* CONFIG_SECURITY */
Eric Parise0007522008-03-05 10:31:54 -05001828struct security_mnt_opts {
1829};
1830
1831static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
1832{
1833}
1834
1835static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
1836{
1837}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001838
1839/*
1840 * This is the default capabilities functionality. Most of these functions
1841 * are just stubbed out, but a few must call the proper capable code.
1842 */
1843
1844static inline int security_init(void)
1845{
1846 return 0;
1847}
1848
Ingo Molnar9e488582009-05-07 19:26:19 +10001849static inline int security_ptrace_access_check(struct task_struct *child,
David Howells5cd9c582008-08-14 11:37:28 +01001850 unsigned int mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001851{
Ingo Molnar9e488582009-05-07 19:26:19 +10001852 return cap_ptrace_access_check(child, mode);
David Howells5cd9c582008-08-14 11:37:28 +01001853}
1854
Alexander Beregalov5e186b52008-08-17 05:34:20 +04001855static inline int security_ptrace_traceme(struct task_struct *parent)
David Howells5cd9c582008-08-14 11:37:28 +01001856{
1857 return cap_ptrace_traceme(parent);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001858}
1859
Eric Paris7b41b172008-04-23 14:10:25 -04001860static inline int security_capget(struct task_struct *target,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001861 kernel_cap_t *effective,
1862 kernel_cap_t *inheritable,
1863 kernel_cap_t *permitted)
1864{
Eric Paris7b41b172008-04-23 14:10:25 -04001865 return cap_capget(target, effective, inheritable, permitted);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001866}
1867
David Howellsd84f4f92008-11-14 10:39:23 +11001868static inline int security_capset(struct cred *new,
1869 const struct cred *old,
1870 const kernel_cap_t *effective,
1871 const kernel_cap_t *inheritable,
1872 const kernel_cap_t *permitted)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001873{
David Howellsd84f4f92008-11-14 10:39:23 +11001874 return cap_capset(new, old, effective, inheritable, permitted);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001875}
1876
Serge E. Hallyn34867402011-03-23 16:43:17 -07001877static inline int security_capable(struct user_namespace *ns,
1878 const struct cred *cred, int cap)
Chris Wright12b59892006-03-25 03:07:41 -08001879{
Serge E. Hallyn34867402011-03-23 16:43:17 -07001880 return cap_capable(current, cred, ns, cap, SECURITY_CAP_AUDIT);
Eric Paris06112162008-11-11 22:02:50 +11001881}
1882
Serge E. Hallyn34867402011-03-23 16:43:17 -07001883static inline int security_real_capable(struct task_struct *tsk, struct user_namespace *ns, int cap)
Eric Paris06112162008-11-11 22:02:50 +11001884{
David Howells3699c532009-01-06 22:27:01 +00001885 int ret;
1886
1887 rcu_read_lock();
Serge E. Hallyn34867402011-03-23 16:43:17 -07001888 ret = cap_capable(tsk, __task_cred(tsk), ns, cap, SECURITY_CAP_AUDIT);
David Howells3699c532009-01-06 22:27:01 +00001889 rcu_read_unlock();
1890 return ret;
1891}
1892
1893static inline
Serge E. Hallyn34867402011-03-23 16:43:17 -07001894int security_real_capable_noaudit(struct task_struct *tsk, struct user_namespace *ns, int cap)
David Howells3699c532009-01-06 22:27:01 +00001895{
1896 int ret;
1897
1898 rcu_read_lock();
Serge E. Hallyn34867402011-03-23 16:43:17 -07001899 ret = cap_capable(tsk, __task_cred(tsk), ns, cap,
David Howells3699c532009-01-06 22:27:01 +00001900 SECURITY_CAP_NOAUDIT);
1901 rcu_read_unlock();
1902 return ret;
Chris Wright12b59892006-03-25 03:07:41 -08001903}
1904
Eric Paris7b41b172008-04-23 14:10:25 -04001905static inline int security_quotactl(int cmds, int type, int id,
1906 struct super_block *sb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001907{
1908 return 0;
1909}
1910
Eric Paris7b41b172008-04-23 14:10:25 -04001911static inline int security_quota_on(struct dentry *dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001912{
1913 return 0;
1914}
1915
Eric Paris12b30522010-11-15 18:36:29 -05001916static inline int security_syslog(int type)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001917{
Eric Paris12b30522010-11-15 18:36:29 -05001918 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001919}
1920
Richard Cochran1e6d7672011-02-01 13:50:58 +00001921static inline int security_settime(const struct timespec *ts,
1922 const struct timezone *tz)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001923{
1924 return cap_settime(ts, tz);
1925}
1926
1927static inline int security_vm_enough_memory(long pages)
1928{
Junjiro R. Okajima1b79cd02008-12-02 10:31:46 -08001929 WARN_ON(current->mm == NULL);
Alan Cox731572d2008-10-29 14:01:20 -07001930 return cap_vm_enough_memory(current->mm, pages);
1931}
1932
Alan Cox34b4e4a2007-08-22 14:01:28 -07001933static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
1934{
Junjiro R. Okajima1b79cd02008-12-02 10:31:46 -08001935 WARN_ON(mm == NULL);
Alan Cox34b4e4a2007-08-22 14:01:28 -07001936 return cap_vm_enough_memory(mm, pages);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001937}
1938
Junjiro R. Okajima1b79cd02008-12-02 10:31:46 -08001939static inline int security_vm_enough_memory_kern(long pages)
1940{
1941 /* If current->mm is a kernel thread then we will pass NULL,
1942 for this specific case that is fine */
1943 return cap_vm_enough_memory(current->mm, pages);
1944}
1945
David Howellsa6f76f22008-11-14 10:39:24 +11001946static inline int security_bprm_set_creds(struct linux_binprm *bprm)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001947{
David Howellsa6f76f22008-11-14 10:39:24 +11001948 return cap_bprm_set_creds(bprm);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001949}
1950
Eric Paris7b41b172008-04-23 14:10:25 -04001951static inline int security_bprm_check(struct linux_binprm *bprm)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001952{
1953 return 0;
1954}
1955
David Howellsa6f76f22008-11-14 10:39:24 +11001956static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
1957{
1958}
1959
1960static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
1961{
1962}
1963
Eric Paris7b41b172008-04-23 14:10:25 -04001964static inline int security_bprm_secureexec(struct linux_binprm *bprm)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001965{
1966 return cap_bprm_secureexec(bprm);
1967}
1968
Eric Paris7b41b172008-04-23 14:10:25 -04001969static inline int security_sb_alloc(struct super_block *sb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001970{
1971 return 0;
1972}
1973
Eric Paris7b41b172008-04-23 14:10:25 -04001974static inline void security_sb_free(struct super_block *sb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001975{ }
1976
Eric Paris7b41b172008-04-23 14:10:25 -04001977static inline int security_sb_copy_data(char *orig, char *copy)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001978{
1979 return 0;
1980}
1981
Eric Parisff36fe22011-03-03 16:09:14 -05001982static inline int security_sb_remount(struct super_block *sb, void *data)
1983{
1984 return 0;
1985}
1986
James Morris12204e22008-12-19 10:44:42 +11001987static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001988{
1989 return 0;
1990}
1991
Eric Paris2069f452008-07-04 09:47:13 +10001992static inline int security_sb_show_options(struct seq_file *m,
1993 struct super_block *sb)
1994{
1995 return 0;
1996}
1997
Eric Paris7b41b172008-04-23 14:10:25 -04001998static inline int security_sb_statfs(struct dentry *dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001999{
2000 return 0;
2001}
2002
Eric Paris7b41b172008-04-23 14:10:25 -04002003static inline int security_sb_mount(char *dev_name, struct path *path,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002004 char *type, unsigned long flags,
2005 void *data)
2006{
2007 return 0;
2008}
2009
Eric Paris7b41b172008-04-23 14:10:25 -04002010static inline int security_sb_umount(struct vfsmount *mnt, int flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002011{
2012 return 0;
2013}
2014
Eric Paris7b41b172008-04-23 14:10:25 -04002015static inline int security_sb_pivotroot(struct path *old_path,
2016 struct path *new_path)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002017{
2018 return 0;
2019}
2020
Eric Parise0007522008-03-05 10:31:54 -05002021static inline int security_sb_set_mnt_opts(struct super_block *sb,
2022 struct security_mnt_opts *opts)
2023{
2024 return 0;
2025}
2026
2027static inline void security_sb_clone_mnt_opts(const struct super_block *oldsb,
2028 struct super_block *newsb)
2029{ }
2030
2031static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
2032{
2033 return 0;
2034}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002035
Eric Paris7b41b172008-04-23 14:10:25 -04002036static inline int security_inode_alloc(struct inode *inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002037{
2038 return 0;
2039}
2040
Eric Paris7b41b172008-04-23 14:10:25 -04002041static inline void security_inode_free(struct inode *inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002042{ }
Stephen Smalley5e41ff92005-09-09 13:01:35 -07002043
Eric Paris7b41b172008-04-23 14:10:25 -04002044static inline int security_inode_init_security(struct inode *inode,
Stephen Smalley5e41ff92005-09-09 13:01:35 -07002045 struct inode *dir,
Eric Paris2a7dba32011-02-01 11:05:39 -05002046 const struct qstr *qstr,
Mimi Zohar9d8f13b2011-06-06 15:29:25 -04002047 initxattrs initxattrs,
2048 void *fs_data)
Stephen Smalley5e41ff92005-09-09 13:01:35 -07002049{
Mimi Zohar1e39f382011-08-15 09:09:16 -04002050 return 0;
Stephen Smalley5e41ff92005-09-09 13:01:35 -07002051}
Eric Paris7b41b172008-04-23 14:10:25 -04002052
Mimi Zohar1e39f382011-08-15 09:09:16 -04002053static inline int security_old_inode_init_security(struct inode *inode,
2054 struct inode *dir,
2055 const struct qstr *qstr,
2056 char **name, void **value,
2057 size_t *len)
Mimi Zohare1c9b232011-08-11 00:22:51 -04002058{
Jan Kara30e05322012-01-03 13:14:29 +01002059 return -EOPNOTSUPP;
Mimi Zohare1c9b232011-08-11 00:22:51 -04002060}
2061
Eric Paris7b41b172008-04-23 14:10:25 -04002062static inline int security_inode_create(struct inode *dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002063 struct dentry *dentry,
Al Viro4acdaf22011-07-26 01:42:34 -04002064 umode_t mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002065{
2066 return 0;
2067}
2068
Eric Paris7b41b172008-04-23 14:10:25 -04002069static inline int security_inode_link(struct dentry *old_dentry,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002070 struct inode *dir,
2071 struct dentry *new_dentry)
2072{
2073 return 0;
2074}
2075
Eric Paris7b41b172008-04-23 14:10:25 -04002076static inline int security_inode_unlink(struct inode *dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002077 struct dentry *dentry)
2078{
2079 return 0;
2080}
2081
Eric Paris7b41b172008-04-23 14:10:25 -04002082static inline int security_inode_symlink(struct inode *dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002083 struct dentry *dentry,
2084 const char *old_name)
2085{
2086 return 0;
2087}
2088
Eric Paris7b41b172008-04-23 14:10:25 -04002089static inline int security_inode_mkdir(struct inode *dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002090 struct dentry *dentry,
2091 int mode)
2092{
2093 return 0;
2094}
2095
Eric Paris7b41b172008-04-23 14:10:25 -04002096static inline int security_inode_rmdir(struct inode *dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002097 struct dentry *dentry)
2098{
2099 return 0;
2100}
2101
Eric Paris7b41b172008-04-23 14:10:25 -04002102static inline int security_inode_mknod(struct inode *dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002103 struct dentry *dentry,
2104 int mode, dev_t dev)
2105{
2106 return 0;
2107}
2108
Eric Paris7b41b172008-04-23 14:10:25 -04002109static inline int security_inode_rename(struct inode *old_dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002110 struct dentry *old_dentry,
2111 struct inode *new_dir,
2112 struct dentry *new_dentry)
2113{
2114 return 0;
2115}
2116
Eric Paris7b41b172008-04-23 14:10:25 -04002117static inline int security_inode_readlink(struct dentry *dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002118{
2119 return 0;
2120}
2121
Eric Paris7b41b172008-04-23 14:10:25 -04002122static inline int security_inode_follow_link(struct dentry *dentry,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002123 struct nameidata *nd)
2124{
2125 return 0;
2126}
2127
Al Virob77b0642008-07-17 09:37:02 -04002128static inline int security_inode_permission(struct inode *inode, int mask)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002129{
2130 return 0;
2131}
2132
Eric Paris7b41b172008-04-23 14:10:25 -04002133static inline int security_inode_setattr(struct dentry *dentry,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002134 struct iattr *attr)
2135{
2136 return 0;
2137}
2138
Eric Paris7b41b172008-04-23 14:10:25 -04002139static inline int security_inode_getattr(struct vfsmount *mnt,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002140 struct dentry *dentry)
2141{
2142 return 0;
2143}
2144
David Howells8f0cfa52008-04-29 00:59:41 -07002145static inline int security_inode_setxattr(struct dentry *dentry,
2146 const char *name, const void *value, size_t size, int flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002147{
2148 return cap_inode_setxattr(dentry, name, value, size, flags);
2149}
2150
David Howells8f0cfa52008-04-29 00:59:41 -07002151static inline void security_inode_post_setxattr(struct dentry *dentry,
2152 const char *name, const void *value, size_t size, int flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002153{ }
2154
David Howells8f0cfa52008-04-29 00:59:41 -07002155static inline int security_inode_getxattr(struct dentry *dentry,
2156 const char *name)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002157{
2158 return 0;
2159}
2160
Eric Paris7b41b172008-04-23 14:10:25 -04002161static inline int security_inode_listxattr(struct dentry *dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002162{
2163 return 0;
2164}
2165
David Howells8f0cfa52008-04-29 00:59:41 -07002166static inline int security_inode_removexattr(struct dentry *dentry,
2167 const char *name)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002168{
2169 return cap_inode_removexattr(dentry, name);
2170}
2171
Serge E. Hallynb5376772007-10-16 23:31:36 -07002172static inline int security_inode_need_killpriv(struct dentry *dentry)
2173{
2174 return cap_inode_need_killpriv(dentry);
2175}
2176
2177static inline int security_inode_killpriv(struct dentry *dentry)
2178{
2179 return cap_inode_killpriv(dentry);
2180}
2181
David P. Quigley42492592008-02-04 22:29:39 -08002182static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002183{
2184 return -EOPNOTSUPP;
2185}
2186
2187static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
2188{
2189 return -EOPNOTSUPP;
2190}
2191
2192static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
2193{
2194 return 0;
2195}
2196
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02002197static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
2198{
2199 *secid = 0;
2200}
2201
Eric Paris7b41b172008-04-23 14:10:25 -04002202static inline int security_file_permission(struct file *file, int mask)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002203{
2204 return 0;
2205}
2206
Eric Paris7b41b172008-04-23 14:10:25 -04002207static inline int security_file_alloc(struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002208{
2209 return 0;
2210}
2211
Eric Paris7b41b172008-04-23 14:10:25 -04002212static inline void security_file_free(struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002213{ }
2214
Eric Paris7b41b172008-04-23 14:10:25 -04002215static inline int security_file_ioctl(struct file *file, unsigned int cmd,
2216 unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002217{
2218 return 0;
2219}
2220
Eric Paris7b41b172008-04-23 14:10:25 -04002221static inline int security_file_mmap(struct file *file, unsigned long reqprot,
2222 unsigned long prot,
2223 unsigned long flags,
2224 unsigned long addr,
2225 unsigned long addr_only)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002226{
Eric Paris7c738752009-07-31 12:53:58 -04002227 return cap_file_mmap(file, reqprot, prot, flags, addr, addr_only);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002228}
2229
Eric Paris7b41b172008-04-23 14:10:25 -04002230static inline int security_file_mprotect(struct vm_area_struct *vma,
2231 unsigned long reqprot,
2232 unsigned long prot)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002233{
2234 return 0;
2235}
2236
Eric Paris7b41b172008-04-23 14:10:25 -04002237static inline int security_file_lock(struct file *file, unsigned int cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002238{
2239 return 0;
2240}
2241
Eric Paris7b41b172008-04-23 14:10:25 -04002242static inline int security_file_fcntl(struct file *file, unsigned int cmd,
2243 unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002244{
2245 return 0;
2246}
2247
Eric Paris7b41b172008-04-23 14:10:25 -04002248static inline int security_file_set_fowner(struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002249{
2250 return 0;
2251}
2252
Eric Paris7b41b172008-04-23 14:10:25 -04002253static inline int security_file_send_sigiotask(struct task_struct *tsk,
2254 struct fown_struct *fown,
2255 int sig)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002256{
2257 return 0;
2258}
2259
Eric Paris7b41b172008-04-23 14:10:25 -04002260static inline int security_file_receive(struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002261{
2262 return 0;
2263}
2264
David Howells745ca242008-11-14 10:39:22 +11002265static inline int security_dentry_open(struct file *file,
2266 const struct cred *cred)
Yuichi Nakamura788e7dd2007-09-14 09:27:07 +09002267{
2268 return 0;
2269}
2270
Eric Paris7b41b172008-04-23 14:10:25 -04002271static inline int security_task_create(unsigned long clone_flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002272{
2273 return 0;
2274}
2275
David Howells945af7c2009-09-04 09:19:48 +01002276static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
2277{
2278 return 0;
2279}
David Howellsee18d642009-09-02 09:14:21 +01002280
David Howellsd84f4f92008-11-14 10:39:23 +11002281static inline void security_cred_free(struct cred *cred)
2282{ }
2283
2284static inline int security_prepare_creds(struct cred *new,
2285 const struct cred *old,
2286 gfp_t gfp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002287{
2288 return 0;
2289}
2290
David Howellsee18d642009-09-02 09:14:21 +01002291static inline void security_transfer_creds(struct cred *new,
2292 const struct cred *old)
2293{
2294}
2295
David Howells3a3b7ce2008-11-14 10:39:28 +11002296static inline int security_kernel_act_as(struct cred *cred, u32 secid)
2297{
2298 return 0;
2299}
2300
2301static inline int security_kernel_create_files_as(struct cred *cred,
2302 struct inode *inode)
2303{
2304 return 0;
2305}
2306
Eric Parisdd8dbf22009-11-03 16:35:32 +11002307static inline int security_kernel_module_request(char *kmod_name)
Eric Paris91884992009-08-13 09:44:57 -04002308{
2309 return 0;
2310}
2311
David Howellsd84f4f92008-11-14 10:39:23 +11002312static inline int security_task_fix_setuid(struct cred *new,
2313 const struct cred *old,
2314 int flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002315{
David Howellsd84f4f92008-11-14 10:39:23 +11002316 return cap_task_fix_setuid(new, old, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002317}
2318
Eric Paris7b41b172008-04-23 14:10:25 -04002319static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002320{
2321 return 0;
2322}
2323
Eric Paris7b41b172008-04-23 14:10:25 -04002324static inline int security_task_getpgid(struct task_struct *p)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002325{
2326 return 0;
2327}
2328
Eric Paris7b41b172008-04-23 14:10:25 -04002329static inline int security_task_getsid(struct task_struct *p)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002330{
2331 return 0;
2332}
2333
Eric Paris7b41b172008-04-23 14:10:25 -04002334static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02002335{
2336 *secid = 0;
2337}
David Quigleyf9008e42006-06-30 01:55:46 -07002338
Eric Paris7b41b172008-04-23 14:10:25 -04002339static inline int security_task_setnice(struct task_struct *p, int nice)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002340{
Serge E. Hallynb5376772007-10-16 23:31:36 -07002341 return cap_task_setnice(p, nice);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002342}
2343
Eric Paris7b41b172008-04-23 14:10:25 -04002344static inline int security_task_setioprio(struct task_struct *p, int ioprio)
James Morris03e68062006-06-23 02:03:58 -07002345{
Serge E. Hallynb5376772007-10-16 23:31:36 -07002346 return cap_task_setioprio(p, ioprio);
James Morris03e68062006-06-23 02:03:58 -07002347}
2348
Eric Paris7b41b172008-04-23 14:10:25 -04002349static inline int security_task_getioprio(struct task_struct *p)
David Quigleya1836a42006-06-30 01:55:49 -07002350{
2351 return 0;
2352}
2353
Jiri Slaby8fd00b42009-08-26 18:41:16 +02002354static inline int security_task_setrlimit(struct task_struct *p,
2355 unsigned int resource,
Eric Paris7b41b172008-04-23 14:10:25 -04002356 struct rlimit *new_rlim)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002357{
2358 return 0;
2359}
2360
KOSAKI Motohirob0ae1982010-10-15 04:21:18 +09002361static inline int security_task_setscheduler(struct task_struct *p)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002362{
KOSAKI Motohirob0ae1982010-10-15 04:21:18 +09002363 return cap_task_setscheduler(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002364}
2365
Eric Paris7b41b172008-04-23 14:10:25 -04002366static inline int security_task_getscheduler(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_movememory(struct task_struct *p)
David Quigley35601542006-06-23 02:04:01 -07002372{
2373 return 0;
2374}
2375
Eric Paris7b41b172008-04-23 14:10:25 -04002376static inline int security_task_kill(struct task_struct *p,
2377 struct siginfo *info, int sig,
2378 u32 secid)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002379{
Serge Hallynaedb60a2008-02-29 15:14:57 +00002380 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002381}
2382
Eric Paris7b41b172008-04-23 14:10:25 -04002383static inline int security_task_wait(struct task_struct *p)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002384{
2385 return 0;
2386}
2387
Eric Paris7b41b172008-04-23 14:10:25 -04002388static inline int security_task_prctl(int option, unsigned long arg2,
2389 unsigned long arg3,
2390 unsigned long arg4,
David Howellsd84f4f92008-11-14 10:39:23 +11002391 unsigned long arg5)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002392{
David Howellsd84f4f92008-11-14 10:39:23 +11002393 return cap_task_prctl(option, arg2, arg3, arg3, arg5);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002394}
2395
2396static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
2397{ }
2398
Eric Paris7b41b172008-04-23 14:10:25 -04002399static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
2400 short flag)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002401{
2402 return 0;
2403}
2404
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02002405static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
2406{
2407 *secid = 0;
2408}
2409
Eric Paris7b41b172008-04-23 14:10:25 -04002410static inline int security_msg_msg_alloc(struct msg_msg *msg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002411{
2412 return 0;
2413}
2414
Eric Paris7b41b172008-04-23 14:10:25 -04002415static inline void security_msg_msg_free(struct msg_msg *msg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002416{ }
2417
Eric Paris7b41b172008-04-23 14:10:25 -04002418static inline int security_msg_queue_alloc(struct msg_queue *msq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002419{
2420 return 0;
2421}
2422
Eric Paris7b41b172008-04-23 14:10:25 -04002423static inline void security_msg_queue_free(struct msg_queue *msq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002424{ }
2425
Eric Paris7b41b172008-04-23 14:10:25 -04002426static inline int security_msg_queue_associate(struct msg_queue *msq,
2427 int msqflg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002428{
2429 return 0;
2430}
2431
Eric Paris7b41b172008-04-23 14:10:25 -04002432static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002433{
2434 return 0;
2435}
2436
Eric Paris7b41b172008-04-23 14:10:25 -04002437static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
2438 struct msg_msg *msg, int msqflg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002439{
2440 return 0;
2441}
2442
Eric Paris7b41b172008-04-23 14:10:25 -04002443static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
2444 struct msg_msg *msg,
2445 struct task_struct *target,
2446 long type, int mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002447{
2448 return 0;
2449}
2450
Eric Paris7b41b172008-04-23 14:10:25 -04002451static inline int security_shm_alloc(struct shmid_kernel *shp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002452{
2453 return 0;
2454}
2455
Eric Paris7b41b172008-04-23 14:10:25 -04002456static inline void security_shm_free(struct shmid_kernel *shp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002457{ }
2458
Eric Paris7b41b172008-04-23 14:10:25 -04002459static inline int security_shm_associate(struct shmid_kernel *shp,
2460 int shmflg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002461{
2462 return 0;
2463}
2464
Eric Paris7b41b172008-04-23 14:10:25 -04002465static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002466{
2467 return 0;
2468}
2469
Eric Paris7b41b172008-04-23 14:10:25 -04002470static inline int security_shm_shmat(struct shmid_kernel *shp,
2471 char __user *shmaddr, int shmflg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002472{
2473 return 0;
2474}
2475
Eric Paris7b41b172008-04-23 14:10:25 -04002476static inline int security_sem_alloc(struct sem_array *sma)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002477{
2478 return 0;
2479}
2480
Eric Paris7b41b172008-04-23 14:10:25 -04002481static inline void security_sem_free(struct sem_array *sma)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002482{ }
2483
Eric Paris7b41b172008-04-23 14:10:25 -04002484static inline int security_sem_associate(struct sem_array *sma, int semflg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002485{
2486 return 0;
2487}
2488
Eric Paris7b41b172008-04-23 14:10:25 -04002489static inline int security_sem_semctl(struct sem_array *sma, int cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002490{
2491 return 0;
2492}
2493
Eric Paris7b41b172008-04-23 14:10:25 -04002494static inline int security_sem_semop(struct sem_array *sma,
2495 struct sembuf *sops, unsigned nsops,
2496 int alter)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002497{
2498 return 0;
2499}
2500
Eric Paris7b41b172008-04-23 14:10:25 -04002501static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002502{ }
2503
Al Viro04ff9702007-03-12 16:17:58 +00002504static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002505{
2506 return -EINVAL;
2507}
2508
2509static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2510{
2511 return -EINVAL;
2512}
2513
Eric Paris7b41b172008-04-23 14:10:25 -04002514static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002515{
Eric Paris7b41b172008-04-23 14:10:25 -04002516 return cap_netlink_send(sk, skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002517}
2518
Eric Paris7b41b172008-04-23 14:10:25 -04002519static inline int security_netlink_recv(struct sk_buff *skb, int cap)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002520{
Eric Paris7b41b172008-04-23 14:10:25 -04002521 return cap_netlink_recv(skb, cap);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002522}
2523
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07002524static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2525{
2526 return -EOPNOTSUPP;
2527}
2528
David Howells7bf570d2008-04-29 20:52:51 +01002529static inline int security_secctx_to_secid(const char *secdata,
David Howells63cb3442008-01-15 23:47:35 +00002530 u32 seclen,
2531 u32 *secid)
2532{
2533 return -EOPNOTSUPP;
2534}
2535
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07002536static inline void security_release_secctx(char *secdata, u32 seclen)
2537{
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07002538}
David P. Quigley1ee65e32009-09-03 14:25:57 -04002539
2540static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
2541{
2542 return -EOPNOTSUPP;
2543}
2544static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
2545{
2546 return -EOPNOTSUPP;
2547}
2548static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
2549{
2550 return -EOPNOTSUPP;
2551}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002552#endif /* CONFIG_SECURITY */
2553
2554#ifdef CONFIG_SECURITY_NETWORK
Linus Torvalds1da177e2005-04-16 15:20:36 -07002555
David S. Miller3610cda2011-01-05 15:38:53 -08002556int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
James Morris20510f22007-10-16 23:31:32 -07002557int security_unix_may_send(struct socket *sock, struct socket *other);
2558int security_socket_create(int family, int type, int protocol, int kern);
2559int security_socket_post_create(struct socket *sock, int family,
2560 int type, int protocol, int kern);
2561int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
2562int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
2563int security_socket_listen(struct socket *sock, int backlog);
2564int security_socket_accept(struct socket *sock, struct socket *newsock);
James Morris20510f22007-10-16 23:31:32 -07002565int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
2566int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2567 int size, int flags);
2568int security_socket_getsockname(struct socket *sock);
2569int security_socket_getpeername(struct socket *sock);
2570int security_socket_getsockopt(struct socket *sock, int level, int optname);
2571int security_socket_setsockopt(struct socket *sock, int level, int optname);
2572int security_socket_shutdown(struct socket *sock, int how);
2573int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
2574int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2575 int __user *optlen, unsigned len);
2576int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
2577int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
2578void security_sk_free(struct sock *sk);
2579void security_sk_clone(const struct sock *sk, struct sock *newsk);
2580void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
2581void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
2582void security_sock_graft(struct sock*sk, struct socket *parent);
2583int security_inet_conn_request(struct sock *sk,
2584 struct sk_buff *skb, struct request_sock *req);
2585void security_inet_csk_clone(struct sock *newsk,
2586 const struct request_sock *req);
2587void security_inet_conn_established(struct sock *sk,
2588 struct sk_buff *skb);
Eric Paris2606fd12010-10-13 16:24:41 -04002589int security_secmark_relabel_packet(u32 secid);
2590void security_secmark_refcount_inc(void);
2591void security_secmark_refcount_dec(void);
Paul Moore2b980db2009-08-28 18:12:43 -04002592int security_tun_dev_create(void);
2593void security_tun_dev_post_create(struct sock *sk);
2594int security_tun_dev_attach(struct sock *sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002595
Linus Torvalds1da177e2005-04-16 15:20:36 -07002596#else /* CONFIG_SECURITY_NETWORK */
David S. Miller3610cda2011-01-05 15:38:53 -08002597static inline int security_unix_stream_connect(struct sock *sock,
2598 struct sock *other,
Eric Paris7b41b172008-04-23 14:10:25 -04002599 struct sock *newsk)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002600{
2601 return 0;
2602}
2603
Eric Paris7b41b172008-04-23 14:10:25 -04002604static inline int security_unix_may_send(struct socket *sock,
2605 struct socket *other)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002606{
2607 return 0;
2608}
2609
Eric Paris7b41b172008-04-23 14:10:25 -04002610static inline int security_socket_create(int family, int type,
2611 int protocol, int kern)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002612{
2613 return 0;
2614}
2615
Eric Paris7b41b172008-04-23 14:10:25 -04002616static inline int security_socket_post_create(struct socket *sock,
Venkat Yekkirala7420ed22006-08-04 23:17:57 -07002617 int family,
2618 int type,
2619 int protocol, int kern)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002620{
Venkat Yekkirala7420ed22006-08-04 23:17:57 -07002621 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002622}
2623
Eric Paris7b41b172008-04-23 14:10:25 -04002624static inline int security_socket_bind(struct socket *sock,
2625 struct sockaddr *address,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002626 int addrlen)
2627{
2628 return 0;
2629}
2630
Eric Paris7b41b172008-04-23 14:10:25 -04002631static inline int security_socket_connect(struct socket *sock,
2632 struct sockaddr *address,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002633 int addrlen)
2634{
2635 return 0;
2636}
2637
Eric Paris7b41b172008-04-23 14:10:25 -04002638static inline int security_socket_listen(struct socket *sock, int backlog)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002639{
2640 return 0;
2641}
2642
Eric Paris7b41b172008-04-23 14:10:25 -04002643static inline int security_socket_accept(struct socket *sock,
2644 struct socket *newsock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002645{
2646 return 0;
2647}
2648
Eric Paris7b41b172008-04-23 14:10:25 -04002649static inline int security_socket_sendmsg(struct socket *sock,
2650 struct msghdr *msg, int size)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002651{
2652 return 0;
2653}
2654
Eric Paris7b41b172008-04-23 14:10:25 -04002655static inline int security_socket_recvmsg(struct socket *sock,
2656 struct msghdr *msg, int size,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002657 int flags)
2658{
2659 return 0;
2660}
2661
Eric Paris7b41b172008-04-23 14:10:25 -04002662static inline int security_socket_getsockname(struct socket *sock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002663{
2664 return 0;
2665}
2666
Eric Paris7b41b172008-04-23 14:10:25 -04002667static inline int security_socket_getpeername(struct socket *sock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002668{
2669 return 0;
2670}
2671
Eric Paris7b41b172008-04-23 14:10:25 -04002672static inline int security_socket_getsockopt(struct socket *sock,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002673 int level, int optname)
2674{
2675 return 0;
2676}
2677
Eric Paris7b41b172008-04-23 14:10:25 -04002678static inline int security_socket_setsockopt(struct socket *sock,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002679 int level, int optname)
2680{
2681 return 0;
2682}
2683
Eric Paris7b41b172008-04-23 14:10:25 -04002684static inline int security_socket_shutdown(struct socket *sock, int how)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002685{
2686 return 0;
2687}
Eric Paris7b41b172008-04-23 14:10:25 -04002688static inline int security_sock_rcv_skb(struct sock *sk,
2689 struct sk_buff *skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002690{
2691 return 0;
2692}
2693
Catherine Zhang2c7946a2006-03-20 22:41:23 -08002694static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2695 int __user *optlen, unsigned len)
2696{
2697 return -ENOPROTOOPT;
2698}
2699
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07002700static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002701{
2702 return -ENOPROTOOPT;
2703}
2704
Al Virodd0fc662005-10-07 07:46:04 +01002705static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002706{
2707 return 0;
2708}
2709
2710static inline void security_sk_free(struct sock *sk)
2711{
2712}
Trent Jaegerdf718372005-12-13 23:12:27 -08002713
Venkat Yekkirala892c1412006-08-04 23:08:56 -07002714static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
2715{
2716}
2717
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07002718static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
Trent Jaegerdf718372005-12-13 23:12:27 -08002719{
Trent Jaegerdf718372005-12-13 23:12:27 -08002720}
Venkat Yekkirala4237c752006-07-24 23:32:50 -07002721
2722static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2723{
2724}
2725
Eric Paris7b41b172008-04-23 14:10:25 -04002726static inline void security_sock_graft(struct sock *sk, struct socket *parent)
Venkat Yekkirala4237c752006-07-24 23:32:50 -07002727{
2728}
2729
2730static inline int security_inet_conn_request(struct sock *sk,
2731 struct sk_buff *skb, struct request_sock *req)
2732{
2733 return 0;
2734}
2735
2736static inline void security_inet_csk_clone(struct sock *newsk,
2737 const struct request_sock *req)
2738{
2739}
Venkat Yekkirala6b877692006-11-08 17:04:09 -06002740
2741static inline void security_inet_conn_established(struct sock *sk,
2742 struct sk_buff *skb)
2743{
2744}
Paul Moore2b980db2009-08-28 18:12:43 -04002745
Eric Paris2606fd12010-10-13 16:24:41 -04002746static inline int security_secmark_relabel_packet(u32 secid)
2747{
2748 return 0;
2749}
2750
2751static inline void security_secmark_refcount_inc(void)
2752{
2753}
2754
2755static inline void security_secmark_refcount_dec(void)
2756{
2757}
2758
Paul Moore2b980db2009-08-28 18:12:43 -04002759static inline int security_tun_dev_create(void)
2760{
2761 return 0;
2762}
2763
2764static inline void security_tun_dev_post_create(struct sock *sk)
2765{
2766}
2767
2768static inline int security_tun_dev_attach(struct sock *sk)
2769{
2770 return 0;
2771}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002772#endif /* CONFIG_SECURITY_NETWORK */
2773
Trent Jaegerdf718372005-12-13 23:12:27 -08002774#ifdef CONFIG_SECURITY_NETWORK_XFRM
Venkat Yekkiralacb969f02006-07-24 23:32:20 -07002775
Paul Moore03e1ad72008-04-12 19:07:52 -07002776int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx);
2777int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
2778void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
2779int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
James Morris20510f22007-10-16 23:31:32 -07002780int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
2781int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2782 struct xfrm_sec_ctx *polsec, u32 secid);
2783int security_xfrm_state_delete(struct xfrm_state *x);
2784void security_xfrm_state_free(struct xfrm_state *x);
Paul Moore03e1ad72008-04-12 19:07:52 -07002785int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
James Morris20510f22007-10-16 23:31:32 -07002786int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
David S. Millere33f7702011-02-22 18:13:15 -08002787 struct xfrm_policy *xp,
2788 const struct flowi *fl);
James Morris20510f22007-10-16 23:31:32 -07002789int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
2790void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
Trent Jaegerdf718372005-12-13 23:12:27 -08002791
Trent Jaegerdf718372005-12-13 23:12:27 -08002792#else /* CONFIG_SECURITY_NETWORK_XFRM */
James Morris20510f22007-10-16 23:31:32 -07002793
Paul Moore03e1ad72008-04-12 19:07:52 -07002794static 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 -08002795{
2796 return 0;
2797}
2798
Paul Moore03e1ad72008-04-12 19:07:52 -07002799static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
Trent Jaegerdf718372005-12-13 23:12:27 -08002800{
2801 return 0;
2802}
2803
Paul Moore03e1ad72008-04-12 19:07:52 -07002804static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
Trent Jaegerdf718372005-12-13 23:12:27 -08002805{
2806}
2807
Paul Moore03e1ad72008-04-12 19:07:52 -07002808static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
Catherine Zhangc8c05a82006-06-08 23:39:49 -07002809{
2810 return 0;
2811}
2812
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07002813static inline int security_xfrm_state_alloc(struct xfrm_state *x,
2814 struct xfrm_user_sec_ctx *sec_ctx)
2815{
2816 return 0;
2817}
2818
2819static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2820 struct xfrm_sec_ctx *polsec, u32 secid)
Trent Jaegerdf718372005-12-13 23:12:27 -08002821{
2822 return 0;
2823}
2824
2825static inline void security_xfrm_state_free(struct xfrm_state *x)
2826{
2827}
2828
David S. Miller6f68dc32006-06-08 23:58:52 -07002829static inline int security_xfrm_state_delete(struct xfrm_state *x)
Catherine Zhangc8c05a82006-06-08 23:39:49 -07002830{
2831 return 0;
2832}
2833
Paul Moore03e1ad72008-04-12 19:07:52 -07002834static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
Trent Jaegerdf718372005-12-13 23:12:27 -08002835{
2836 return 0;
2837}
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07002838
2839static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
David S. Millere33f7702011-02-22 18:13:15 -08002840 struct xfrm_policy *xp, const struct flowi *fl)
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07002841{
2842 return 1;
2843}
2844
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07002845static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07002846{
2847 return 0;
2848}
2849
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07002850static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2851{
2852}
2853
Trent Jaegerdf718372005-12-13 23:12:27 -08002854#endif /* CONFIG_SECURITY_NETWORK_XFRM */
2855
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09002856#ifdef CONFIG_SECURITY_PATH
2857int security_path_unlink(struct path *dir, struct dentry *dentry);
2858int security_path_mkdir(struct path *dir, struct dentry *dentry, int mode);
2859int security_path_rmdir(struct path *dir, struct dentry *dentry);
2860int security_path_mknod(struct path *dir, struct dentry *dentry, int mode,
2861 unsigned int dev);
Tetsuo Handaea0d3ab2010-06-02 13:24:43 +09002862int security_path_truncate(struct path *path);
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09002863int security_path_symlink(struct path *dir, struct dentry *dentry,
2864 const char *old_name);
2865int security_path_link(struct dentry *old_dentry, struct path *new_dir,
2866 struct dentry *new_dentry);
2867int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
2868 struct path *new_dir, struct dentry *new_dentry);
Tetsuo Handa89eda062009-10-04 21:49:47 +09002869int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
Al Viro910f4ece2011-07-26 04:25:58 -04002870 umode_t mode);
Tetsuo Handa89eda062009-10-04 21:49:47 +09002871int security_path_chown(struct path *path, uid_t uid, gid_t gid);
Tetsuo Handa8b8efb42009-10-04 21:49:48 +09002872int security_path_chroot(struct path *path);
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09002873#else /* CONFIG_SECURITY_PATH */
2874static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
2875{
2876 return 0;
2877}
2878
2879static inline int security_path_mkdir(struct path *dir, struct dentry *dentry,
2880 int mode)
2881{
2882 return 0;
2883}
2884
2885static inline int security_path_rmdir(struct path *dir, struct dentry *dentry)
2886{
2887 return 0;
2888}
2889
2890static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
2891 int mode, unsigned int dev)
2892{
2893 return 0;
2894}
2895
Tetsuo Handaea0d3ab2010-06-02 13:24:43 +09002896static inline int security_path_truncate(struct path *path)
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09002897{
2898 return 0;
2899}
2900
2901static inline int security_path_symlink(struct path *dir, struct dentry *dentry,
2902 const char *old_name)
2903{
2904 return 0;
2905}
2906
2907static inline int security_path_link(struct dentry *old_dentry,
2908 struct path *new_dir,
2909 struct dentry *new_dentry)
2910{
2911 return 0;
2912}
2913
2914static inline int security_path_rename(struct path *old_dir,
2915 struct dentry *old_dentry,
2916 struct path *new_dir,
2917 struct dentry *new_dentry)
2918{
2919 return 0;
2920}
Tetsuo Handa89eda062009-10-04 21:49:47 +09002921
2922static inline int security_path_chmod(struct dentry *dentry,
2923 struct vfsmount *mnt,
Al Viro910f4ece2011-07-26 04:25:58 -04002924 umode_t mode)
Tetsuo Handa89eda062009-10-04 21:49:47 +09002925{
2926 return 0;
2927}
2928
2929static inline int security_path_chown(struct path *path, uid_t uid, gid_t gid)
2930{
2931 return 0;
2932}
Tetsuo Handa8b8efb42009-10-04 21:49:48 +09002933
2934static inline int security_path_chroot(struct path *path)
2935{
2936 return 0;
2937}
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09002938#endif /* CONFIG_SECURITY_PATH */
2939
David Howells29db9192005-10-30 15:02:44 -08002940#ifdef CONFIG_KEYS
2941#ifdef CONFIG_SECURITY
David Howells29db9192005-10-30 15:02:44 -08002942
David Howellsd84f4f92008-11-14 10:39:23 +11002943int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
James Morris20510f22007-10-16 23:31:32 -07002944void security_key_free(struct key *key);
2945int security_key_permission(key_ref_t key_ref,
David Howellsd84f4f92008-11-14 10:39:23 +11002946 const struct cred *cred, key_perm_t perm);
David Howells70a5bb72008-04-29 01:01:26 -07002947int security_key_getsecurity(struct key *key, char **_buffer);
David Howells29db9192005-10-30 15:02:44 -08002948
2949#else
2950
Michael LeMayd7200242006-06-22 14:47:17 -07002951static inline int security_key_alloc(struct key *key,
David Howellsd84f4f92008-11-14 10:39:23 +11002952 const struct cred *cred,
David Howells7e047ef2006-06-26 00:24:50 -07002953 unsigned long flags)
David Howells29db9192005-10-30 15:02:44 -08002954{
2955 return 0;
2956}
2957
2958static inline void security_key_free(struct key *key)
2959{
2960}
2961
2962static inline int security_key_permission(key_ref_t key_ref,
David Howellsd84f4f92008-11-14 10:39:23 +11002963 const struct cred *cred,
David Howells29db9192005-10-30 15:02:44 -08002964 key_perm_t perm)
2965{
2966 return 0;
2967}
2968
David Howells70a5bb72008-04-29 01:01:26 -07002969static inline int security_key_getsecurity(struct key *key, char **_buffer)
2970{
2971 *_buffer = NULL;
2972 return 0;
2973}
2974
David Howells29db9192005-10-30 15:02:44 -08002975#endif
2976#endif /* CONFIG_KEYS */
2977
Ahmed S. Darwish03d37d22008-03-01 22:00:05 +02002978#ifdef CONFIG_AUDIT
2979#ifdef CONFIG_SECURITY
2980int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
2981int security_audit_rule_known(struct audit_krule *krule);
2982int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
2983 struct audit_context *actx);
2984void security_audit_rule_free(void *lsmrule);
2985
2986#else
2987
2988static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
2989 void **lsmrule)
2990{
2991 return 0;
2992}
2993
2994static inline int security_audit_rule_known(struct audit_krule *krule)
2995{
2996 return 0;
2997}
2998
2999static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
3000 void *lsmrule, struct audit_context *actx)
3001{
3002 return 0;
3003}
3004
3005static inline void security_audit_rule_free(void *lsmrule)
3006{ }
3007
3008#endif /* CONFIG_SECURITY */
3009#endif /* CONFIG_AUDIT */
3010
Eric Parisda318942008-08-22 11:35:57 -04003011#ifdef CONFIG_SECURITYFS
3012
Al Viro52ef0c02011-07-26 04:30:04 -04003013extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
Eric Parisda318942008-08-22 11:35:57 -04003014 struct dentry *parent, void *data,
3015 const struct file_operations *fops);
3016extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
3017extern void securityfs_remove(struct dentry *dentry);
3018
3019#else /* CONFIG_SECURITYFS */
3020
3021static inline struct dentry *securityfs_create_dir(const char *name,
3022 struct dentry *parent)
3023{
3024 return ERR_PTR(-ENODEV);
3025}
3026
3027static inline struct dentry *securityfs_create_file(const char *name,
Al Viro52ef0c02011-07-26 04:30:04 -04003028 umode_t mode,
Eric Parisda318942008-08-22 11:35:57 -04003029 struct dentry *parent,
3030 void *data,
3031 const struct file_operations *fops)
3032{
3033 return ERR_PTR(-ENODEV);
3034}
3035
3036static inline void securityfs_remove(struct dentry *dentry)
3037{}
3038
3039#endif
3040
Pekka Enberg3d544f42009-03-24 11:59:23 +02003041#ifdef CONFIG_SECURITY
3042
3043static inline char *alloc_secdata(void)
3044{
3045 return (char *)get_zeroed_page(GFP_KERNEL);
3046}
3047
3048static inline void free_secdata(void *secdata)
3049{
3050 free_page((unsigned long)secdata);
3051}
3052
3053#else
3054
3055static inline char *alloc_secdata(void)
3056{
3057 return (char *)1;
3058}
3059
3060static inline void free_secdata(void *secdata)
3061{ }
3062#endif /* CONFIG_SECURITY */
3063
Linus Torvalds1da177e2005-04-16 15:20:36 -07003064#endif /* ! __LINUX_SECURITY_H */
3065