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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
David Howells29db9192005-10-30 15:02:44 -080025#include <linux/key.h>
Al Viro40401532012-02-13 03:58:52 +000026#include <linux/capability.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090027#include <linux/slab.h>
Al Viro40401532012-02-13 03:58:52 +000028#include <linux/err.h>
David Quigleyd47be3d2013-05-22 12:50:34 -040029#include <linux/string.h>
Al Viro40401532012-02-13 03:58:52 +000030
31struct linux_binprm;
32struct cred;
33struct rlimit;
34struct siginfo;
35struct sem_array;
36struct sembuf;
37struct kern_ipc_perm;
38struct audit_context;
39struct super_block;
40struct inode;
41struct dentry;
42struct file;
43struct vfsmount;
44struct path;
45struct qstr;
46struct nameidata;
47struct iattr;
48struct fown_struct;
49struct file_operations;
50struct shmid_kernel;
51struct msg_msg;
52struct msg_queue;
53struct xattr;
54struct xfrm_sec_ctx;
55struct mm_struct;
Linus Torvalds1da177e2005-04-16 15:20:36 -070056
Ahmed S. Darwish076c54c2008-03-06 18:09:10 +020057/* Maximum number of letters for an LSM name string */
58#define SECURITY_NAME_MAX 10
59
Eric Paris06112162008-11-11 22:02:50 +110060/* If capable should audit the security request */
61#define SECURITY_CAP_NOAUDIT 0
62#define SECURITY_CAP_AUDIT 1
63
David Quigleyeb9ae682013-05-22 12:50:37 -040064/* LSM Agnostic defines for sb_set_mnt_opts */
65#define SECURITY_LSM_NATIVE_LABELS 1
66
Linus Torvalds1da177e2005-04-16 15:20:36 -070067struct ctl_table;
Ahmed S. Darwish03d37d22008-03-01 22:00:05 +020068struct audit_krule;
Serge E. Hallyn34867402011-03-23 16:43:17 -070069struct user_namespace;
Al Viro40401532012-02-13 03:58:52 +000070struct timezone;
Linus Torvalds1da177e2005-04-16 15:20:36 -070071
72/*
73 * These functions are in security/capability.c and are used
74 * as the default capabilities functions
75 */
Eric Paris6a9de492012-01-03 12:25:14 -050076extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
77 int cap, int audit);
Richard Cochran1e6d7672011-02-01 13:50:58 +000078extern int cap_settime(const struct timespec *ts, const struct timezone *tz);
Ingo Molnar9e488582009-05-07 19:26:19 +100079extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
David Howells5cd9c582008-08-14 11:37:28 +010080extern int cap_ptrace_traceme(struct task_struct *parent);
Eric Paris7b41b172008-04-23 14:10:25 -040081extern 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 +110082extern int cap_capset(struct cred *new, const struct cred *old,
83 const kernel_cap_t *effective,
84 const kernel_cap_t *inheritable,
85 const kernel_cap_t *permitted);
David Howellsa6f76f22008-11-14 10:39:24 +110086extern int cap_bprm_set_creds(struct linux_binprm *bprm);
Linus Torvalds1da177e2005-04-16 15:20:36 -070087extern int cap_bprm_secureexec(struct linux_binprm *bprm);
David Howells8f0cfa52008-04-29 00:59:41 -070088extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
89 const void *value, size_t size, int flags);
90extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
Serge E. Hallynb5376772007-10-16 23:31:36 -070091extern int cap_inode_need_killpriv(struct dentry *dentry);
92extern int cap_inode_killpriv(struct dentry *dentry);
Al Virod0077942012-05-30 13:11:37 -040093extern int cap_mmap_addr(unsigned long addr);
Al Viroe5467852012-05-30 13:30:51 -040094extern int cap_mmap_file(struct file *file, unsigned long reqprot,
95 unsigned long prot, unsigned long flags);
David Howellsd84f4f92008-11-14 10:39:23 +110096extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
Andrew G. Morgan3898b1b2008-04-28 02:13:40 -070097extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
David Howellsd84f4f92008-11-14 10:39:23 +110098 unsigned long arg4, unsigned long arg5);
KOSAKI Motohirob0ae1982010-10-15 04:21:18 +090099extern int cap_task_setscheduler(struct task_struct *p);
Eric Paris7b41b172008-04-23 14:10:25 -0400100extern int cap_task_setioprio(struct task_struct *p, int ioprio);
101extern int cap_task_setnice(struct task_struct *p, int nice);
James Morris20510f22007-10-16 23:31:32 -0700102extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103
104struct msghdr;
105struct sk_buff;
106struct sock;
107struct sockaddr;
108struct socket;
Trent Jaegerdf718372005-12-13 23:12:27 -0800109struct flowi;
110struct dst_entry;
111struct xfrm_selector;
112struct xfrm_policy;
113struct xfrm_state;
114struct xfrm_user_sec_ctx;
Eric Paris2069f452008-07-04 09:47:13 +1000115struct seq_file;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116
117extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118
wzt.wzt@gmail.com189b3b12010-02-23 23:15:28 +0800119void reset_security_ops(void);
120
David Howells6e141542009-12-15 19:27:45 +0000121#ifdef CONFIG_MMU
Eric Parised032182007-06-28 15:55:21 -0400122extern unsigned long mmap_min_addr;
Eric Parisa2551df2009-07-31 12:54:11 -0400123extern unsigned long dac_mmap_min_addr;
David Howells6e141542009-12-15 19:27:45 +0000124#else
Mark Salterbe8cfc42012-09-24 17:17:38 -0700125#define mmap_min_addr 0UL
David Howells6e141542009-12-15 19:27:45 +0000126#define dac_mmap_min_addr 0UL
127#endif
128
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129/*
130 * Values used in the task_security_ops calls
131 */
132/* setuid or setgid, id0 == uid or gid */
133#define LSM_SETID_ID 1
134
135/* setreuid or setregid, id0 == real, id1 == eff */
136#define LSM_SETID_RE 2
137
138/* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
139#define LSM_SETID_RES 4
140
141/* setfsuid or setfsgid, id0 == fsuid or fsgid */
142#define LSM_SETID_FS 8
143
144/* forward declares to avoid warnings */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145struct sched_param;
Venkat Yekkirala4237c752006-07-24 23:32:50 -0700146struct request_sock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147
David Howellsa6f76f22008-11-14 10:39:24 +1100148/* bprm->unsafe reasons */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149#define LSM_UNSAFE_SHARE 1
150#define LSM_UNSAFE_PTRACE 2
151#define LSM_UNSAFE_PTRACE_CAP 4
Andy Lutomirski259e5e62012-04-12 16:47:50 -0500152#define LSM_UNSAFE_NO_NEW_PRIVS 8
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153
David Howells6e141542009-12-15 19:27:45 +0000154#ifdef CONFIG_MMU
Alexey Dobriyan8d65af72009-09-23 15:57:19 -0700155extern int mmap_min_addr_handler(struct ctl_table *table, int write,
Eric Paris47d439e2009-08-07 14:53:57 -0400156 void __user *buffer, size_t *lenp, loff_t *ppos);
David Howells6e141542009-12-15 19:27:45 +0000157#endif
Eric Paris47d439e2009-08-07 14:53:57 -0400158
Mimi Zohar9d8f13b2011-06-06 15:29:25 -0400159/* security_inode_init_security callback function to write xattrs */
160typedef int (*initxattrs) (struct inode *inode,
161 const struct xattr *xattr_array, void *fs_data);
162
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163#ifdef CONFIG_SECURITY
164
Eric Parise0007522008-03-05 10:31:54 -0500165struct security_mnt_opts {
166 char **mnt_opts;
167 int *mnt_opts_flags;
168 int num_mnt_opts;
169};
170
171static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
172{
173 opts->mnt_opts = NULL;
174 opts->mnt_opts_flags = NULL;
175 opts->num_mnt_opts = 0;
176}
177
178static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
179{
180 int i;
181 if (opts->mnt_opts)
Eric Paris7b41b172008-04-23 14:10:25 -0400182 for (i = 0; i < opts->num_mnt_opts; i++)
Eric Parise0007522008-03-05 10:31:54 -0500183 kfree(opts->mnt_opts[i]);
184 kfree(opts->mnt_opts);
185 opts->mnt_opts = NULL;
186 kfree(opts->mnt_opts_flags);
187 opts->mnt_opts_flags = NULL;
188 opts->num_mnt_opts = 0;
189}
190
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191/**
192 * struct security_operations - main security structure
193 *
Ahmed S. Darwish076c54c2008-03-06 18:09:10 +0200194 * Security module identifier.
195 *
196 * @name:
Vsevolod Alekseev11be0b32011-11-05 02:35:28 -0700197 * A string that acts as a unique identifier for the LSM with max number
Ahmed S. Darwish076c54c2008-03-06 18:09:10 +0200198 * of characters = SECURITY_NAME_MAX.
199 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200 * Security hooks for program execution operations.
201 *
David Howellsa6f76f22008-11-14 10:39:24 +1100202 * @bprm_set_creds:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203 * Save security information in the bprm->security field, typically based
204 * on information about the bprm->file, for later use by the apply_creds
205 * hook. This hook may also optionally check permissions (e.g. for
206 * transitions between security domains).
207 * This hook may be called multiple times during a single execve, e.g. for
208 * interpreters. The hook can tell whether it has already been called by
209 * checking to see if @bprm->security is non-NULL. If so, then the hook
210 * may decide either to retain the security information saved earlier or
211 * to replace it.
212 * @bprm contains the linux_binprm structure.
213 * Return 0 if the hook is successful and permission is granted.
214 * @bprm_check_security:
David Howellsa6f76f22008-11-14 10:39:24 +1100215 * This hook mediates the point when a search for a binary handler will
216 * begin. It allows a check the @bprm->security value which is set in the
217 * preceding set_creds call. The primary difference from set_creds is
218 * that the argv list and envp list are reliably available in @bprm. This
219 * hook may be called multiple times during a single execve; and in each
220 * pass set_creds is called first.
Eric Paris7b41b172008-04-23 14:10:25 -0400221 * @bprm contains the linux_binprm structure.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222 * Return 0 if the hook is successful and permission is granted.
David Howellsa6f76f22008-11-14 10:39:24 +1100223 * @bprm_committing_creds:
224 * Prepare to install the new security attributes of a process being
225 * transformed by an execve operation, based on the old credentials
226 * pointed to by @current->cred and the information set in @bprm->cred by
227 * the bprm_set_creds hook. @bprm points to the linux_binprm structure.
228 * This hook is a good place to perform state changes on the process such
229 * as closing open file descriptors to which access will no longer be
230 * granted when the attributes are changed. This is called immediately
231 * before commit_creds().
232 * @bprm_committed_creds:
233 * Tidy up after the installation of the new security attributes of a
234 * process being transformed by an execve operation. The new credentials
235 * have, by this point, been set to @current->cred. @bprm points to the
236 * linux_binprm structure. This hook is a good place to perform state
237 * changes on the process such as clearing out non-inheritable signal
238 * state. This is called immediately after commit_creds().
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239 * @bprm_secureexec:
Eric Paris7b41b172008-04-23 14:10:25 -0400240 * Return a boolean value (0 or 1) indicating whether a "secure exec"
241 * is required. The flag is passed in the auxiliary table
242 * on the initial stack to the ELF interpreter to indicate whether libc
243 * should enable secure mode.
244 * @bprm contains the linux_binprm structure.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245 *
246 * Security hooks for filesystem operations.
247 *
248 * @sb_alloc_security:
249 * Allocate and attach a security structure to the sb->s_security field.
250 * The s_security field is initialized to NULL when the structure is
251 * allocated.
252 * @sb contains the super_block structure to be modified.
253 * Return 0 if operation was successful.
254 * @sb_free_security:
255 * Deallocate and clear the sb->s_security field.
256 * @sb contains the super_block structure to be modified.
257 * @sb_statfs:
David Howells726c3342006-06-23 02:02:58 -0700258 * Check permission before obtaining filesystem statistics for the @mnt
259 * mountpoint.
260 * @dentry is a handle on the superblock for the filesystem.
Eric Paris7b41b172008-04-23 14:10:25 -0400261 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262 * @sb_mount:
263 * Check permission before an object specified by @dev_name is mounted on
264 * the mount point named by @nd. For an ordinary mount, @dev_name
265 * identifies a device if the file system type requires a device. For a
266 * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a
267 * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
268 * pathname of the object being mounted.
269 * @dev_name contains the name for object being mounted.
Al Virob5266eb2008-03-22 17:48:24 -0400270 * @path contains the path for mount point object.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271 * @type contains the filesystem type.
272 * @flags contains the mount flags.
273 * @data contains the filesystem-specific data.
274 * Return 0 if permission is granted.
275 * @sb_copy_data:
276 * Allow mount option data to be copied prior to parsing by the filesystem,
277 * so that the security module can extract security-specific mount
278 * options cleanly (a filesystem may modify the data e.g. with strsep()).
279 * This also allows the original mount data to be stripped of security-
280 * specific options to avoid having to make filesystems aware of them.
281 * @type the type of filesystem being mounted.
282 * @orig the original mount data copied from userspace.
283 * @copy copied data which will be passed to the security module.
284 * Returns 0 if the copy was successful.
Eric Parisff36fe22011-03-03 16:09:14 -0500285 * @sb_remount:
Vsevolod Alekseev11be0b32011-11-05 02:35:28 -0700286 * Extracts security system specific mount options and verifies no changes
Eric Parisff36fe22011-03-03 16:09:14 -0500287 * are being made to those options.
288 * @sb superblock being remounted
289 * @data contains the filesystem-specific data.
290 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291 * @sb_umount:
292 * Check permission before the @mnt file system is unmounted.
293 * @mnt contains the mounted file system.
294 * @flags contains the unmount flags, e.g. MNT_FORCE.
295 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296 * @sb_pivotroot:
297 * Check permission before pivoting the root filesystem.
Al Virob5266eb2008-03-22 17:48:24 -0400298 * @old_path contains the path for the new location of the current root (put_old).
Eric Paris7b41b172008-04-23 14:10:25 -0400299 * @new_path contains the path for the new root (new_root).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300 * Return 0 if permission is granted.
Eric Parisc9180a52007-11-30 13:00:35 -0500301 * @sb_set_mnt_opts:
302 * Set the security relevant mount options used for a superblock
303 * @sb the superblock to set security mount options for
Eric Parise0007522008-03-05 10:31:54 -0500304 * @opts binary data structure containing all lsm mount data
Eric Parisc9180a52007-11-30 13:00:35 -0500305 * @sb_clone_mnt_opts:
306 * Copy all security options from a given superblock to another
307 * @oldsb old superblock which contain information to clone
308 * @newsb new superblock which needs filled in
Eric Parise0007522008-03-05 10:31:54 -0500309 * @sb_parse_opts_str:
310 * Parse a string of security data filling in the opts structure
311 * @options string containing all mount options known by the LSM
312 * @opts binary data structure usable by the LSM
David Quigleyd47be3d2013-05-22 12:50:34 -0400313 * @dentry_init_security:
314 * Compute a context for a dentry as the inode is not yet available
315 * since NFSv4 has no label backed by an EA anyway.
316 * @dentry dentry to use in calculating the context.
317 * @mode mode used to determine resource type.
318 * @name name of the last path component used to create file
319 * @ctx pointer to place the pointer to the resulting context in.
320 * @ctxlen point to place the length of the resulting context.
321 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322 *
323 * Security hooks for inode operations.
324 *
325 * @inode_alloc_security:
326 * Allocate and attach a security structure to @inode->i_security. The
327 * i_security field is initialized to NULL when the inode structure is
328 * allocated.
329 * @inode contains the inode structure.
330 * Return 0 if operation was successful.
331 * @inode_free_security:
332 * @inode contains the inode structure.
333 * Deallocate the inode security structure and set @inode->i_security to
Eric Paris7b41b172008-04-23 14:10:25 -0400334 * NULL.
Stephen Smalley5e41ff92005-09-09 13:01:35 -0700335 * @inode_init_security:
Eric Paris7b41b172008-04-23 14:10:25 -0400336 * Obtain the security attribute name suffix and value to set on a newly
Stephen Smalley5e41ff92005-09-09 13:01:35 -0700337 * created inode and set up the incore security field for the new inode.
338 * This hook is called by the fs code as part of the inode creation
339 * transaction and provides for atomic labeling of the inode, unlike
340 * the post_create/mkdir/... hooks called by the VFS. The hook function
341 * is expected to allocate the name and value via kmalloc, with the caller
342 * being responsible for calling kfree after using them.
343 * If the security module does not use security attributes or does
344 * not wish to put a security attribute on this particular inode,
345 * then it should return -EOPNOTSUPP to skip this processing.
346 * @inode contains the inode structure of the newly created inode.
347 * @dir contains the inode structure of the parent directory.
Eric Paris2a7dba32011-02-01 11:05:39 -0500348 * @qstr contains the last path component of the new object
Stephen Smalley5e41ff92005-09-09 13:01:35 -0700349 * @name will be set to the allocated name suffix (e.g. selinux).
350 * @value will be set to the allocated attribute value.
351 * @len will be set to the length of the value.
352 * Returns 0 if @name and @value have been successfully set,
353 * -EOPNOTSUPP if no security attribute is needed, or
354 * -ENOMEM on memory allocation failure.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355 * @inode_create:
356 * Check permission to create a regular file.
357 * @dir contains inode structure of the parent of the new file.
358 * @dentry contains the dentry structure for the file to be created.
359 * @mode contains the file mode of the file to be created.
360 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361 * @inode_link:
362 * Check permission before creating a new hard link to a file.
363 * @old_dentry contains the dentry structure for an existing link to the file.
364 * @dir contains the inode structure of the parent directory of the new link.
365 * @new_dentry contains the dentry structure for the new link.
366 * Return 0 if permission is granted.
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900367 * @path_link:
368 * Check permission before creating a new hard link to a file.
369 * @old_dentry contains the dentry structure for an existing link
370 * to the file.
371 * @new_dir contains the path structure of the parent directory of
372 * the new link.
373 * @new_dentry contains the dentry structure for the new link.
374 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375 * @inode_unlink:
Eric Paris7b41b172008-04-23 14:10:25 -0400376 * Check the permission to remove a hard link to a file.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377 * @dir contains the inode structure of parent directory of the file.
378 * @dentry contains the dentry structure for file to be unlinked.
379 * Return 0 if permission is granted.
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900380 * @path_unlink:
381 * Check the permission to remove a hard link to a file.
382 * @dir contains the path structure of parent directory of the file.
383 * @dentry contains the dentry structure for file to be unlinked.
384 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385 * @inode_symlink:
386 * Check the permission to create a symbolic link to a file.
387 * @dir contains the inode structure of parent directory of the symbolic link.
388 * @dentry contains the dentry structure of the symbolic link.
389 * @old_name contains the pathname of file.
390 * Return 0 if permission is granted.
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900391 * @path_symlink:
392 * Check the permission to create a symbolic link to a file.
393 * @dir contains the path structure of parent directory of
394 * the symbolic link.
395 * @dentry contains the dentry structure of the symbolic link.
396 * @old_name contains the pathname of file.
397 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398 * @inode_mkdir:
399 * Check permissions to create a new directory in the existing directory
Vsevolod Alekseev11be0b32011-11-05 02:35:28 -0700400 * associated with inode structure @dir.
401 * @dir contains the inode structure of parent of the directory to be created.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402 * @dentry contains the dentry structure of new directory.
403 * @mode contains the mode of new directory.
404 * Return 0 if permission is granted.
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900405 * @path_mkdir:
406 * Check permissions to create a new directory in the existing directory
Vsevolod Alekseev11be0b32011-11-05 02:35:28 -0700407 * associated with path structure @path.
408 * @dir contains the path structure of parent of the directory
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900409 * to be created.
410 * @dentry contains the dentry structure of new directory.
411 * @mode contains the mode of new directory.
412 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413 * @inode_rmdir:
414 * Check the permission to remove a directory.
415 * @dir contains the inode structure of parent of the directory to be removed.
416 * @dentry contains the dentry structure of directory to be removed.
417 * Return 0 if permission is granted.
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900418 * @path_rmdir:
419 * Check the permission to remove a directory.
420 * @dir contains the path structure of parent of the directory to be
421 * removed.
422 * @dentry contains the dentry structure of directory to be removed.
423 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424 * @inode_mknod:
425 * Check permissions when creating a special file (or a socket or a fifo
426 * file created via the mknod system call). Note that if mknod operation
427 * is being done for a regular file, then the create hook will be called
428 * and not this hook.
429 * @dir contains the inode structure of parent of the new file.
430 * @dentry contains the dentry structure of the new file.
431 * @mode contains the mode of the new file.
Michael Opdenacker59c51592007-05-09 08:57:56 +0200432 * @dev contains the device number.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433 * Return 0 if permission is granted.
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900434 * @path_mknod:
435 * Check permissions when creating a file. Note that this hook is called
436 * even if mknod operation is being done for a regular file.
437 * @dir contains the path structure of parent of the new file.
438 * @dentry contains the dentry structure of the new file.
439 * @mode contains the mode of the new file.
440 * @dev contains the undecoded device number. Use new_decode_dev() to get
441 * the decoded device number.
442 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443 * @inode_rename:
444 * Check for permission to rename a file or directory.
445 * @old_dir contains the inode structure for parent of the old link.
446 * @old_dentry contains the dentry structure of the old link.
447 * @new_dir contains the inode structure for parent of the new link.
448 * @new_dentry contains the dentry structure of the new link.
449 * Return 0 if permission is granted.
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900450 * @path_rename:
451 * Check for permission to rename a file or directory.
452 * @old_dir contains the path structure for parent of the old link.
453 * @old_dentry contains the dentry structure of the old link.
454 * @new_dir contains the path structure for parent of the new link.
455 * @new_dentry contains the dentry structure of the new link.
456 * Return 0 if permission is granted.
Tetsuo Handa89eda062009-10-04 21:49:47 +0900457 * @path_chmod:
458 * Check for permission to change DAC's permission of a file or directory.
459 * @dentry contains the dentry structure.
460 * @mnt contains the vfsmnt structure.
461 * @mode contains DAC's mode.
462 * Return 0 if permission is granted.
463 * @path_chown:
464 * Check for permission to change owner/group of a file or directory.
465 * @path contains the path structure.
466 * @uid contains new owner's ID.
467 * @gid contains new group's ID.
468 * Return 0 if permission is granted.
Tetsuo Handa8b8efb42009-10-04 21:49:48 +0900469 * @path_chroot:
470 * Check for permission to change root directory.
471 * @path contains the path structure.
472 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700473 * @inode_readlink:
474 * Check the permission to read the symbolic link.
475 * @dentry contains the dentry structure for the file link.
476 * Return 0 if permission is granted.
477 * @inode_follow_link:
478 * Check permission to follow a symbolic link when looking up a pathname.
479 * @dentry contains the dentry structure for the link.
480 * @nd contains the nameidata structure for the parent directory.
481 * Return 0 if permission is granted.
482 * @inode_permission:
483 * Check permission before accessing an inode. This hook is called by the
484 * existing Linux permission function, so a security module can use it to
485 * provide additional checking for existing Linux permission checks.
486 * Notice that this hook is called when a file is opened (as well as many
487 * other operations), whereas the file_security_ops permission hook is
488 * called when the actual read/write operations are performed.
489 * @inode contains the inode structure to check.
490 * @mask contains the permission mask.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700491 * Return 0 if permission is granted.
492 * @inode_setattr:
493 * Check permission before setting file attributes. Note that the kernel
494 * call to notify_change is performed from several locations, whenever
495 * file attributes change (such as when a file is truncated, chown/chmod
496 * operations, transferring disk quotas, etc).
497 * @dentry contains the dentry structure for the file.
498 * @attr is the iattr structure containing the new file attributes.
499 * Return 0 if permission is granted.
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900500 * @path_truncate:
501 * Check permission before truncating a file.
502 * @path contains the path structure for the file.
Kentaro Takedabe6d3e52008-12-17 13:24:15 +0900503 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504 * @inode_getattr:
505 * Check permission before obtaining file attributes.
506 * @mnt is the vfsmount where the dentry was looked up
507 * @dentry contains the dentry structure for the file.
508 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509 * @inode_setxattr:
Eric Paris7b41b172008-04-23 14:10:25 -0400510 * Check permission before setting the extended attributes
511 * @value identified by @name for @dentry.
512 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513 * @inode_post_setxattr:
Eric Paris7b41b172008-04-23 14:10:25 -0400514 * Update inode security field after successful setxattr operation.
515 * @value identified by @name for @dentry.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516 * @inode_getxattr:
Eric Paris7b41b172008-04-23 14:10:25 -0400517 * Check permission before obtaining the extended attributes
518 * identified by @name for @dentry.
519 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700520 * @inode_listxattr:
Eric Paris7b41b172008-04-23 14:10:25 -0400521 * Check permission before obtaining the list of extended attribute
522 * names for @dentry.
523 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524 * @inode_removexattr:
Eric Paris7b41b172008-04-23 14:10:25 -0400525 * Check permission before removing the extended attribute
526 * identified by @name for @dentry.
527 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528 * @inode_getsecurity:
David P. Quigley42492592008-02-04 22:29:39 -0800529 * Retrieve a copy of the extended attribute representation of the
530 * security label associated with @name for @inode via @buffer. Note that
531 * @name is the remainder of the attribute name after the security prefix
532 * has been removed. @alloc is used to specify of the call should return a
533 * value via the buffer or just the value length Return size of buffer on
534 * success.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700535 * @inode_setsecurity:
536 * Set the security label associated with @name for @inode from the
537 * extended attribute value @value. @size indicates the size of the
538 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
Eric Paris7b41b172008-04-23 14:10:25 -0400539 * Note that @name is the remainder of the attribute name after the
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540 * security. prefix has been removed.
541 * Return 0 on success.
542 * @inode_listsecurity:
543 * Copy the extended attribute names for the security labels
544 * associated with @inode into @buffer. The maximum size of @buffer
545 * is specified by @buffer_size. @buffer may be NULL to request
546 * the size of the buffer required.
547 * Returns number of bytes used/required on success.
Serge E. Hallynb5376772007-10-16 23:31:36 -0700548 * @inode_need_killpriv:
549 * Called when an inode has been changed.
550 * @dentry is the dentry being changed.
551 * Return <0 on error to abort the inode change operation.
552 * Return 0 if inode_killpriv does not need to be called.
553 * Return >0 if inode_killpriv does need to be called.
554 * @inode_killpriv:
555 * The setuid bit is being removed. Remove similar security labels.
556 * Called with the dentry->d_inode->i_mutex held.
557 * @dentry is the dentry being changed.
558 * Return 0 on success. If error is returned, then the operation
559 * causing setuid bit removal is failed.
Ahmed S. Darwish8a076192008-03-01 21:51:09 +0200560 * @inode_getsecid:
561 * Get the secid associated with the node.
562 * @inode contains a pointer to the inode.
563 * @secid contains a pointer to the location where result will be saved.
564 * In case of failure, @secid will be set to zero.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700565 *
566 * Security hooks for file operations
567 *
568 * @file_permission:
569 * Check file permissions before accessing an open file. This hook is
570 * called by various operations that read or write files. A security
571 * module can use this hook to perform additional checking on these
572 * operations, e.g. to revalidate permissions on use to support privilege
573 * bracketing or policy changes. Notice that this hook is used when the
574 * actual read/write operations are performed, whereas the
575 * inode_security_ops hook is called when a file is opened (as well as
576 * many other operations).
577 * Caveat: Although this hook can be used to revalidate permissions for
578 * various system call operations that read or write files, it does not
579 * address the revalidation of permissions for memory-mapped files.
580 * Security modules must handle this separately if they need such
581 * revalidation.
582 * @file contains the file structure being accessed.
583 * @mask contains the requested permissions.
584 * Return 0 if permission is granted.
585 * @file_alloc_security:
586 * Allocate and attach a security structure to the file->f_security field.
587 * The security field is initialized to NULL when the structure is first
588 * created.
589 * @file contains the file structure to secure.
590 * Return 0 if the hook is successful and permission is granted.
591 * @file_free_security:
592 * Deallocate and free any security structures stored in file->f_security.
593 * @file contains the file structure being modified.
594 * @file_ioctl:
595 * @file contains the file structure.
596 * @cmd contains the operation to perform.
597 * @arg contains the operational arguments.
Vsevolod Alekseev11be0b32011-11-05 02:35:28 -0700598 * Check permission for an ioctl operation on @file. Note that @arg
Linus Torvalds1da177e2005-04-16 15:20:36 -0700599 * sometimes represents a user space pointer; in other cases, it may be a
600 * simple integer value. When @arg represents a user space pointer, it
601 * should never be used by the security module.
602 * Return 0 if permission is granted.
Al Viroe5467852012-05-30 13:30:51 -0400603 * @mmap_addr :
604 * Check permissions for a mmap operation at @addr.
605 * @addr contains virtual address that will be used for the operation.
606 * Return 0 if permission is granted.
607 * @mmap_file :
Linus Torvalds1da177e2005-04-16 15:20:36 -0700608 * Check permissions for a mmap operation. The @file may be NULL, e.g.
609 * if mapping anonymous memory.
610 * @file contains the file structure for file to map (may be NULL).
611 * @reqprot contains the protection requested by the application.
612 * @prot contains the protection that will be applied by the kernel.
613 * @flags contains the operational flags.
614 * Return 0 if permission is granted.
615 * @file_mprotect:
616 * Check permissions before changing memory access permissions.
617 * @vma contains the memory region to modify.
618 * @reqprot contains the protection requested by the application.
619 * @prot contains the protection that will be applied by the kernel.
620 * Return 0 if permission is granted.
621 * @file_lock:
622 * Check permission before performing file locking operations.
623 * Note: this hook mediates both flock and fcntl style locks.
624 * @file contains the file structure.
625 * @cmd contains the posix-translated lock operation to perform
626 * (e.g. F_RDLCK, F_WRLCK).
627 * Return 0 if permission is granted.
628 * @file_fcntl:
629 * Check permission before allowing the file operation specified by @cmd
Vsevolod Alekseev11be0b32011-11-05 02:35:28 -0700630 * from being performed on the file @file. Note that @arg sometimes
Linus Torvalds1da177e2005-04-16 15:20:36 -0700631 * represents a user space pointer; in other cases, it may be a simple
632 * integer value. When @arg represents a user space pointer, it should
633 * never be used by the security module.
634 * @file contains the file structure.
635 * @cmd contains the operation to be performed.
636 * @arg contains the operational arguments.
637 * Return 0 if permission is granted.
638 * @file_set_fowner:
639 * Save owner security information (typically from current->security) in
640 * file->f_security for later use by the send_sigiotask hook.
641 * @file contains the file structure to update.
642 * Return 0 on success.
643 * @file_send_sigiotask:
644 * Check permission for the file owner @fown to send SIGIO or SIGURG to the
645 * process @tsk. Note that this hook is sometimes called from interrupt.
646 * Note that the fown_struct, @fown, is never outside the context of a
647 * struct file, so the file structure (and associated security information)
648 * can always be obtained:
Robert P. J. Dayb385a142007-02-10 01:46:25 -0800649 * container_of(fown, struct file, f_owner)
Eric Paris7b41b172008-04-23 14:10:25 -0400650 * @tsk contains the structure of task receiving signal.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700651 * @fown contains the file owner information.
652 * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
653 * Return 0 if permission is granted.
654 * @file_receive:
655 * This hook allows security modules to control the ability of a process
656 * to receive an open file descriptor via socket IPC.
657 * @file contains the file structure being received.
658 * Return 0 if permission is granted.
Eric Paris83d49852012-04-04 13:45:40 -0400659 * @file_open
Yuichi Nakamura788e7dd2007-09-14 09:27:07 +0900660 * Save open-time permission checking state for later use upon
661 * file_permission, and recheck access if anything has changed
662 * since inode_permission.
663 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664 * Security hooks for task operations.
665 *
666 * @task_create:
667 * Check permission before creating a child process. See the clone(2)
668 * manual page for definitions of the @clone_flags.
669 * @clone_flags contains the flags indicating what should be shared.
670 * Return 0 if permission is granted.
Kees Cook1a2a4d02011-12-21 12:17:03 -0800671 * @task_free:
672 * @task task being freed
673 * Handle release of task-related resources. (Note that this can be called
674 * from interrupt context.)
David Howellsee18d642009-09-02 09:14:21 +0100675 * @cred_alloc_blank:
676 * @cred points to the credentials.
677 * @gfp indicates the atomicity of any memory allocations.
678 * Only allocate sufficient memory and attach to @cred such that
679 * cred_transfer() will not get ENOMEM.
David Howellsf1752ee2008-11-14 10:39:17 +1100680 * @cred_free:
681 * @cred points to the credentials.
682 * Deallocate and clear the cred->security field in a set of credentials.
David Howellsd84f4f92008-11-14 10:39:23 +1100683 * @cred_prepare:
684 * @new points to the new credentials.
685 * @old points to the original credentials.
686 * @gfp indicates the atomicity of any memory allocations.
687 * Prepare a new set of credentials by copying the data from the old set.
David Howellsee18d642009-09-02 09:14:21 +0100688 * @cred_transfer:
689 * @new points to the new credentials.
690 * @old points to the original credentials.
691 * Transfer data from original creds to new creds
David Howells3a3b7ce2008-11-14 10:39:28 +1100692 * @kernel_act_as:
693 * Set the credentials for a kernel service to act as (subjective context).
694 * @new points to the credentials to be modified.
695 * @secid specifies the security ID to be set
696 * The current task must be the one that nominated @secid.
697 * Return 0 if successful.
698 * @kernel_create_files_as:
699 * Set the file creation context in a set of credentials to be the same as
700 * the objective context of the specified inode.
701 * @new points to the credentials to be modified.
702 * @inode points to the inode to use as a reference.
703 * The current task must be the one that nominated @inode.
704 * Return 0 if successful.
Eric Paris91884992009-08-13 09:44:57 -0400705 * @kernel_module_request:
706 * Ability to trigger the kernel to automatically upcall to userspace for
707 * userspace to load a kernel module with the given name.
Eric Parisdd8dbf22009-11-03 16:35:32 +1100708 * @kmod_name name of the module requested by the kernel
James Morrisf322abf2009-08-14 11:19:29 +1000709 * Return 0 if successful.
Kees Cook2e72d512012-10-16 07:32:07 +1030710 * @kernel_module_from_file:
711 * Load a kernel module from userspace.
712 * @file contains the file structure pointing to the file containing
713 * the kernel module to load. If the module is being loaded from a blob,
714 * this argument will be NULL.
715 * Return 0 if permission is granted.
David Howellsd84f4f92008-11-14 10:39:23 +1100716 * @task_fix_setuid:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700717 * Update the module's state after setting one or more of the user
718 * identity attributes of the current process. The @flags parameter
719 * indicates which of the set*uid system calls invoked this hook. If
David Howellsd84f4f92008-11-14 10:39:23 +1100720 * @new is the set of credentials that will be installed. Modifications
721 * should be made to this rather than to @current->cred.
722 * @old is the set of credentials that are being replaces
Linus Torvalds1da177e2005-04-16 15:20:36 -0700723 * @flags contains one of the LSM_SETID_* values.
724 * Return 0 on success.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725 * @task_setpgid:
726 * Check permission before setting the process group identifier of the
727 * process @p to @pgid.
728 * @p contains the task_struct for process being modified.
729 * @pgid contains the new pgid.
730 * Return 0 if permission is granted.
731 * @task_getpgid:
732 * Check permission before getting the process group identifier of the
733 * process @p.
734 * @p contains the task_struct for the process.
735 * Return 0 if permission is granted.
736 * @task_getsid:
737 * Check permission before getting the session identifier of the process
738 * @p.
739 * @p contains the task_struct for the process.
740 * Return 0 if permission is granted.
David Quigleyf9008e42006-06-30 01:55:46 -0700741 * @task_getsecid:
742 * Retrieve the security identifier of the process @p.
743 * @p contains the task_struct for the process and place is into @secid.
Ahmed S. Darwish8a076192008-03-01 21:51:09 +0200744 * In case of failure, @secid will be set to zero.
745 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700746 * @task_setnice:
747 * Check permission before setting the nice value of @p to @nice.
748 * @p contains the task_struct of process.
749 * @nice contains the new nice value.
750 * Return 0 if permission is granted.
James Morris03e68062006-06-23 02:03:58 -0700751 * @task_setioprio
752 * Check permission before setting the ioprio value of @p to @ioprio.
753 * @p contains the task_struct of process.
754 * @ioprio contains the new ioprio value
755 * Return 0 if permission is granted.
David Quigleya1836a42006-06-30 01:55:49 -0700756 * @task_getioprio
757 * Check permission before getting the ioprio value of @p.
758 * @p contains the task_struct of process.
759 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700760 * @task_setrlimit:
761 * Check permission before setting the resource limits of the current
762 * process for @resource to @new_rlim. The old resource limit values can
763 * be examined by dereferencing (current->signal->rlim + resource).
764 * @resource contains the resource whose limit is being set.
765 * @new_rlim contains the new limits for @resource.
766 * Return 0 if permission is granted.
767 * @task_setscheduler:
768 * Check permission before setting scheduling policy and/or parameters of
769 * process @p based on @policy and @lp.
770 * @p contains the task_struct for process.
771 * @policy contains the scheduling policy.
772 * @lp contains the scheduling parameters.
773 * Return 0 if permission is granted.
774 * @task_getscheduler:
775 * Check permission before obtaining scheduling information for process
776 * @p.
777 * @p contains the task_struct for process.
778 * Return 0 if permission is granted.
David Quigley35601542006-06-23 02:04:01 -0700779 * @task_movememory
780 * Check permission before moving memory owned by process @p.
781 * @p contains the task_struct for process.
782 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700783 * @task_kill:
784 * Check permission before sending signal @sig to @p. @info can be NULL,
785 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
786 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
787 * from the kernel and should typically be permitted.
788 * SIGIO signals are handled separately by the send_sigiotask hook in
789 * file_security_ops.
790 * @p contains the task_struct for process.
791 * @info contains the signal information.
792 * @sig contains the signal value.
David Quigleyf9008e42006-06-30 01:55:46 -0700793 * @secid contains the sid of the process where the signal originated
Linus Torvalds1da177e2005-04-16 15:20:36 -0700794 * Return 0 if permission is granted.
795 * @task_wait:
796 * Check permission before allowing a process to reap a child process @p
797 * and collect its status information.
798 * @p contains the task_struct for process.
799 * Return 0 if permission is granted.
800 * @task_prctl:
801 * Check permission before performing a process control operation on the
802 * current process.
803 * @option contains the operation.
804 * @arg2 contains a argument.
805 * @arg3 contains a argument.
806 * @arg4 contains a argument.
807 * @arg5 contains a argument.
David Howellsd84f4f92008-11-14 10:39:23 +1100808 * Return -ENOSYS if no-one wanted to handle this op, any other value to
809 * cause prctl() to return immediately with that value.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700810 * @task_to_inode:
Eric Paris7b41b172008-04-23 14:10:25 -0400811 * Set the security attributes for an inode based on an associated task's
812 * security attributes, e.g. for /proc/pid inodes.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700813 * @p contains the task_struct for the task.
814 * @inode contains the inode structure for the inode.
815 *
816 * Security hooks for Netlink messaging.
817 *
818 * @netlink_send:
819 * Save security information for a netlink message so that permission
820 * checking can be performed when the message is processed. The security
821 * information can be saved using the eff_cap field of the
Eric Paris7b41b172008-04-23 14:10:25 -0400822 * netlink_skb_parms structure. Also may be used to provide fine
Linus Torvalds1da177e2005-04-16 15:20:36 -0700823 * grained control over message transmission.
Vsevolod Alekseev11be0b32011-11-05 02:35:28 -0700824 * @sk associated sock of task sending the message.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700825 * @skb contains the sk_buff structure for the netlink message.
826 * Return 0 if the information was successfully saved and message
827 * is allowed to be transmitted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700828 *
829 * Security hooks for Unix domain networking.
830 *
831 * @unix_stream_connect:
832 * Check permissions before establishing a Unix domain stream connection
833 * between @sock and @other.
David S. Miller3610cda2011-01-05 15:38:53 -0800834 * @sock contains the sock structure.
835 * @other contains the peer sock structure.
836 * @newsk contains the new sock structure.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700837 * Return 0 if permission is granted.
838 * @unix_may_send:
839 * Check permissions before connecting or sending datagrams from @sock to
840 * @other.
841 * @sock contains the socket structure.
Javier Martinez Canillasfbe74e32012-02-15 11:58:54 +0100842 * @other contains the peer socket structure.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700843 * Return 0 if permission is granted.
844 *
845 * The @unix_stream_connect and @unix_may_send hooks were necessary because
846 * Linux provides an alternative to the conventional file name space for Unix
847 * domain sockets. Whereas binding and connecting to sockets in the file name
848 * space is mediated by the typical file permissions (and caught by the mknod
849 * and permission hooks in inode_security_ops), binding and connecting to
850 * sockets in the abstract name space is completely unmediated. Sufficient
851 * control of Unix domain sockets in the abstract name space isn't possible
852 * using only the socket layer hooks, since we need to know the actual target
853 * socket, which is not looked up until we are inside the af_unix code.
854 *
855 * Security hooks for socket operations.
856 *
857 * @socket_create:
858 * Check permissions prior to creating a new socket.
859 * @family contains the requested protocol family.
860 * @type contains the requested communications type.
861 * @protocol contains the requested protocol.
862 * @kern set to 1 if a kernel socket.
863 * Return 0 if permission is granted.
864 * @socket_post_create:
865 * This hook allows a module to update or allocate a per-socket security
866 * structure. Note that the security field was not added directly to the
867 * socket structure, but rather, the socket security information is stored
868 * in the associated inode. Typically, the inode alloc_security hook will
869 * allocate and and attach security information to
870 * sock->inode->i_security. This hook may be used to update the
871 * sock->inode->i_security field with additional information that wasn't
872 * available when the inode was allocated.
873 * @sock contains the newly created socket structure.
874 * @family contains the requested protocol family.
875 * @type contains the requested communications type.
876 * @protocol contains the requested protocol.
877 * @kern set to 1 if a kernel socket.
878 * @socket_bind:
879 * Check permission before socket protocol layer bind operation is
880 * performed and the socket @sock is bound to the address specified in the
881 * @address parameter.
882 * @sock contains the socket structure.
883 * @address contains the address to bind to.
884 * @addrlen contains the length of address.
Eric Paris7b41b172008-04-23 14:10:25 -0400885 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700886 * @socket_connect:
887 * Check permission before socket protocol layer connect operation
888 * attempts to connect socket @sock to a remote address, @address.
889 * @sock contains the socket structure.
890 * @address contains the address of remote endpoint.
891 * @addrlen contains the length of address.
Eric Paris7b41b172008-04-23 14:10:25 -0400892 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700893 * @socket_listen:
894 * Check permission before socket protocol layer listen operation.
895 * @sock contains the socket structure.
896 * @backlog contains the maximum length for the pending connection queue.
897 * Return 0 if permission is granted.
898 * @socket_accept:
899 * Check permission before accepting a new connection. Note that the new
900 * socket, @newsock, has been created and some information copied to it,
901 * but the accept operation has not actually been performed.
902 * @sock contains the listening socket structure.
903 * @newsock contains the newly created server socket for connection.
904 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700905 * @socket_sendmsg:
906 * Check permission before transmitting a message to another socket.
907 * @sock contains the socket structure.
908 * @msg contains the message to be transmitted.
909 * @size contains the size of message.
910 * Return 0 if permission is granted.
911 * @socket_recvmsg:
912 * Check permission before receiving a message from a socket.
913 * @sock contains the socket structure.
914 * @msg contains the message structure.
915 * @size contains the size of message structure.
916 * @flags contains the operational flags.
Eric Paris7b41b172008-04-23 14:10:25 -0400917 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700918 * @socket_getsockname:
919 * Check permission before the local address (name) of the socket object
920 * @sock is retrieved.
921 * @sock contains the socket structure.
922 * Return 0 if permission is granted.
923 * @socket_getpeername:
924 * Check permission before the remote address (name) of a socket object
925 * @sock is retrieved.
926 * @sock contains the socket structure.
927 * Return 0 if permission is granted.
928 * @socket_getsockopt:
929 * Check permissions before retrieving the options associated with socket
930 * @sock.
931 * @sock contains the socket structure.
932 * @level contains the protocol level to retrieve option from.
933 * @optname contains the name of option to retrieve.
934 * Return 0 if permission is granted.
935 * @socket_setsockopt:
936 * Check permissions before setting the options associated with socket
937 * @sock.
938 * @sock contains the socket structure.
939 * @level contains the protocol level to set options for.
940 * @optname contains the name of the option to set.
Eric Paris7b41b172008-04-23 14:10:25 -0400941 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700942 * @socket_shutdown:
943 * Checks permission before all or part of a connection on the socket
944 * @sock is shut down.
945 * @sock contains the socket structure.
946 * @how contains the flag indicating how future sends and receives are handled.
947 * Return 0 if permission is granted.
948 * @socket_sock_rcv_skb:
949 * Check permissions on incoming network packets. This hook is distinct
950 * from Netfilter's IP input hooks since it is the first time that the
951 * incoming sk_buff @skb has been associated with a particular socket, @sk.
Tetsuo Handa0ed73182010-01-06 09:23:54 +0900952 * Must not sleep inside this hook because some callers hold spinlocks.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700953 * @sk contains the sock (not socket) associated with the incoming sk_buff.
954 * @skb contains the incoming network data.
Serge Hallyn6da34ba2007-10-20 00:53:30 +0200955 * @socket_getpeersec_stream:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700956 * This hook allows the security module to provide peer socket security
Serge Hallyn6da34ba2007-10-20 00:53:30 +0200957 * state for unix or connected tcp sockets to userspace via getsockopt
958 * SO_GETPEERSEC. For tcp sockets this can be meaningful if the
959 * socket is associated with an ipsec SA.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700960 * @sock is the local socket.
961 * @optval userspace memory where the security state is to be copied.
962 * @optlen userspace int where the module should copy the actual length
963 * of the security state.
964 * @len as input is the maximum length to copy to userspace provided
965 * by the caller.
966 * Return 0 if all is well, otherwise, typical getsockopt return
967 * values.
Serge Hallyn6da34ba2007-10-20 00:53:30 +0200968 * @socket_getpeersec_dgram:
Eric Paris7b41b172008-04-23 14:10:25 -0400969 * This hook allows the security module to provide peer socket security
970 * state for udp sockets on a per-packet basis to userspace via
971 * getsockopt SO_GETPEERSEC. The application must first have indicated
972 * the IP_PASSSEC option via getsockopt. It can then retrieve the
973 * security state returned by this hook for a packet via the SCM_SECURITY
974 * ancillary message type.
975 * @skb is the skbuff for the packet being queried
976 * @secdata is a pointer to a buffer in which to copy the security data
977 * @seclen is the maximum length for @secdata
978 * Return 0 on success, error on failure.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700979 * @sk_alloc_security:
Eric Paris7b41b172008-04-23 14:10:25 -0400980 * Allocate and attach a security structure to the sk->sk_security field,
981 * which is used to copy security attributes between local stream sockets.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700982 * @sk_free_security:
983 * Deallocate security structure.
Venkat Yekkirala892c1412006-08-04 23:08:56 -0700984 * @sk_clone_security:
985 * Clone/copy security structure.
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -0700986 * @sk_getsecid:
987 * Retrieve the LSM-specific secid for the sock to enable caching of network
Trent Jaegerdf718372005-12-13 23:12:27 -0800988 * authorizations.
Venkat Yekkirala4237c752006-07-24 23:32:50 -0700989 * @sock_graft:
990 * Sets the socket's isec sid to the sock's sid.
991 * @inet_conn_request:
992 * Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
993 * @inet_csk_clone:
994 * Sets the new child socket's sid to the openreq sid.
Venkat Yekkirala6b877692006-11-08 17:04:09 -0600995 * @inet_conn_established:
Eric Paris7b41b172008-04-23 14:10:25 -0400996 * Sets the connection's peersid to the secmark on skb.
Eric Paris2606fd12010-10-13 16:24:41 -0400997 * @secmark_relabel_packet:
998 * check if the process should be allowed to relabel packets to the given secid
999 * @security_secmark_refcount_inc
1000 * tells the LSM to increment the number of secmark labeling rules loaded
1001 * @security_secmark_refcount_dec
1002 * tells the LSM to decrement the number of secmark labeling rules loaded
Venkat Yekkirala4237c752006-07-24 23:32:50 -07001003 * @req_classify_flow:
1004 * Sets the flow's sid to the openreq sid.
Paul Moore5dbbaf22013-01-14 07:12:19 +00001005 * @tun_dev_alloc_security:
1006 * This hook allows a module to allocate a security structure for a TUN
1007 * device.
1008 * @security pointer to a security structure pointer.
1009 * Returns a zero on success, negative values on failure.
1010 * @tun_dev_free_security:
1011 * This hook allows a module to free the security structure for a TUN
1012 * device.
1013 * @security pointer to the TUN device's security structure
Paul Moore2b980db2009-08-28 18:12:43 -04001014 * @tun_dev_create:
1015 * Check permissions prior to creating a new TUN device.
Paul Moore5dbbaf22013-01-14 07:12:19 +00001016 * @tun_dev_attach_queue:
1017 * Check permissions prior to attaching to a TUN device queue.
1018 * @security pointer to the TUN device's security structure.
Paul Moore2b980db2009-08-28 18:12:43 -04001019 * @tun_dev_attach:
Paul Moore5dbbaf22013-01-14 07:12:19 +00001020 * This hook can be used by the module to update any security state
Paul Moore2b980db2009-08-28 18:12:43 -04001021 * associated with the TUN device's sock structure.
1022 * @sk contains the existing sock structure.
Paul Moore5dbbaf22013-01-14 07:12:19 +00001023 * @security pointer to the TUN device's security structure.
1024 * @tun_dev_open:
1025 * This hook can be used by the module to update any security state
1026 * associated with the TUN device's security structure.
1027 * @security pointer to the TUN devices's security structure.
Paul Moore6b07a242013-04-10 15:34:14 -04001028 * @skb_owned_by:
1029 * This hook sets the packet's owning sock.
1030 * @skb is the packet.
1031 * @sk the sock which owns the packet.
Trent Jaegerdf718372005-12-13 23:12:27 -08001032 *
1033 * Security hooks for XFRM operations.
1034 *
1035 * @xfrm_policy_alloc_security:
Paul Moore03e1ad72008-04-12 19:07:52 -07001036 * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
1037 * Database used by the XFRM system.
Trent Jaegerdf718372005-12-13 23:12:27 -08001038 * @sec_ctx contains the security context information being provided by
1039 * the user-level policy update program (e.g., setkey).
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001040 * Allocate a security structure to the xp->security field; the security
Venkat Yekkiralac1a856c2006-11-08 17:03:44 -06001041 * field is initialized to NULL when the xfrm_policy is allocated.
Trent Jaegerdf718372005-12-13 23:12:27 -08001042 * Return 0 if operation was successful (memory to allocate, legal context)
1043 * @xfrm_policy_clone_security:
Paul Moore03e1ad72008-04-12 19:07:52 -07001044 * @old_ctx contains an existing xfrm_sec_ctx.
1045 * @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
1046 * Allocate a security structure in new_ctxp that contains the
1047 * information from the old_ctx structure.
Trent Jaegerdf718372005-12-13 23:12:27 -08001048 * Return 0 if operation was successful (memory to allocate).
1049 * @xfrm_policy_free_security:
Paul Moore03e1ad72008-04-12 19:07:52 -07001050 * @ctx contains the xfrm_sec_ctx
Catherine Zhangc8c05a82006-06-08 23:39:49 -07001051 * Deallocate xp->security.
1052 * @xfrm_policy_delete_security:
Paul Moore03e1ad72008-04-12 19:07:52 -07001053 * @ctx contains the xfrm_sec_ctx.
Catherine Zhangc8c05a82006-06-08 23:39:49 -07001054 * Authorize deletion of xp->security.
Trent Jaegerdf718372005-12-13 23:12:27 -08001055 * @xfrm_state_alloc_security:
1056 * @x contains the xfrm_state being added to the Security Association
1057 * Database by the XFRM system.
1058 * @sec_ctx contains the security context information being provided by
1059 * the user-level SA generation program (e.g., setkey or racoon).
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001060 * @secid contains the secid from which to take the mls portion of the context.
1061 * Allocate a security structure to the x->security field; the security
1062 * field is initialized to NULL when the xfrm_state is allocated. Set the
1063 * context to correspond to either sec_ctx or polsec, with the mls portion
1064 * taken from secid in the latter case.
Trent Jaegerdf718372005-12-13 23:12:27 -08001065 * Return 0 if operation was successful (memory to allocate, legal context).
1066 * @xfrm_state_free_security:
1067 * @x contains the xfrm_state.
Catherine Zhangc8c05a82006-06-08 23:39:49 -07001068 * Deallocate x->security.
1069 * @xfrm_state_delete_security:
1070 * @x contains the xfrm_state.
1071 * Authorize deletion of x->security.
Trent Jaegerdf718372005-12-13 23:12:27 -08001072 * @xfrm_policy_lookup:
Paul Moore03e1ad72008-04-12 19:07:52 -07001073 * @ctx contains the xfrm_sec_ctx for which the access control is being
Trent Jaegerdf718372005-12-13 23:12:27 -08001074 * checked.
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001075 * @fl_secid contains the flow security label that is used to authorize
Trent Jaegerdf718372005-12-13 23:12:27 -08001076 * access to the policy xp.
1077 * @dir contains the direction of the flow (input or output).
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001078 * Check permission when a flow selects a xfrm_policy for processing
Trent Jaegerdf718372005-12-13 23:12:27 -08001079 * XFRMs on a packet. The hook is called when selecting either a
1080 * per-socket policy or a generic xfrm policy.
Venkat Yekkirala5b368e62006-10-05 15:42:18 -05001081 * Return 0 if permission is granted, -ESRCH otherwise, or -errno
1082 * on other errors.
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001083 * @xfrm_state_pol_flow_match:
1084 * @x contains the state to match.
1085 * @xp contains the policy to check for a match.
1086 * @fl contains the flow to check for a match.
1087 * Return 1 if there is a match.
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001088 * @xfrm_decode_session:
1089 * @skb points to skb to decode.
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07001090 * @secid points to the flow key secid to set.
1091 * @ckall says if all xfrms used should be checked for same secid.
1092 * Return 0 if ckall is zero or all xfrms used have the same secid.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001093 *
David Howells29db9192005-10-30 15:02:44 -08001094 * Security hooks affecting all Key Management operations
1095 *
1096 * @key_alloc:
1097 * Permit allocation of a key and assign security data. Note that key does
1098 * not have a serial number assigned at this point.
1099 * @key points to the key.
David Howells7e047ef2006-06-26 00:24:50 -07001100 * @flags is the allocation flags
David Howells29db9192005-10-30 15:02:44 -08001101 * Return 0 if permission is granted, -ve error otherwise.
1102 * @key_free:
1103 * Notification of destruction; free security data.
1104 * @key points to the key.
1105 * No return value.
1106 * @key_permission:
1107 * See whether a specific operational right is granted to a process on a
Eric Paris7b41b172008-04-23 14:10:25 -04001108 * key.
David Howells29db9192005-10-30 15:02:44 -08001109 * @key_ref refers to the key (key pointer + possession attribute bit).
David Howellsd84f4f92008-11-14 10:39:23 +11001110 * @cred points to the credentials to provide the context against which to
Eric Paris7b41b172008-04-23 14:10:25 -04001111 * evaluate the security data on the key.
David Howells29db9192005-10-30 15:02:44 -08001112 * @perm describes the combination of permissions required of this key.
Tetsuo Handaad9c2b02010-11-30 11:06:47 +09001113 * Return 0 if permission is granted, -ve error otherwise.
David Howells70a5bb72008-04-29 01:01:26 -07001114 * @key_getsecurity:
1115 * Get a textual representation of the security context attached to a key
1116 * for the purposes of honouring KEYCTL_GETSECURITY. This function
1117 * allocates the storage for the NUL-terminated string and the caller
1118 * should free it.
1119 * @key points to the key to be queried.
1120 * @_buffer points to a pointer that should be set to point to the
Vsevolod Alekseev11be0b32011-11-05 02:35:28 -07001121 * resulting string (if no label or an error occurs).
David Howells70a5bb72008-04-29 01:01:26 -07001122 * Return the length of the string (including terminating NUL) or -ve if
Vsevolod Alekseev11be0b32011-11-05 02:35:28 -07001123 * an error.
David Howells70a5bb72008-04-29 01:01:26 -07001124 * May also return 0 (and a NULL buffer pointer) if there is no label.
David Howells29db9192005-10-30 15:02:44 -08001125 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07001126 * Security hooks affecting all System V IPC operations.
1127 *
1128 * @ipc_permission:
1129 * Check permissions for access to IPC
1130 * @ipcp contains the kernel IPC permission structure
1131 * @flag contains the desired (requested) permission set
1132 * Return 0 if permission is granted.
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02001133 * @ipc_getsecid:
1134 * Get the secid associated with the ipc object.
1135 * @ipcp contains the kernel IPC permission structure.
1136 * @secid contains a pointer to the location where result will be saved.
1137 * In case of failure, @secid will be set to zero.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001138 *
1139 * Security hooks for individual messages held in System V IPC message queues
1140 * @msg_msg_alloc_security:
1141 * Allocate and attach a security structure to the msg->security field.
1142 * The security field is initialized to NULL when the structure is first
1143 * created.
1144 * @msg contains the message structure to be modified.
1145 * Return 0 if operation was successful and permission is granted.
1146 * @msg_msg_free_security:
1147 * Deallocate the security structure for this message.
1148 * @msg contains the message structure to be modified.
1149 *
1150 * Security hooks for System V IPC Message Queues
1151 *
1152 * @msg_queue_alloc_security:
1153 * Allocate and attach a security structure to the
1154 * msq->q_perm.security field. The security field is initialized to
1155 * NULL when the structure is first created.
1156 * @msq contains the message queue structure to be modified.
1157 * Return 0 if operation was successful and permission is granted.
1158 * @msg_queue_free_security:
1159 * Deallocate security structure for this message queue.
1160 * @msq contains the message queue structure to be modified.
1161 * @msg_queue_associate:
1162 * Check permission when a message queue is requested through the
1163 * msgget system call. This hook is only called when returning the
1164 * message queue identifier for an existing message queue, not when a
1165 * new message queue is created.
1166 * @msq contains the message queue to act upon.
1167 * @msqflg contains the operation control flags.
1168 * Return 0 if permission is granted.
1169 * @msg_queue_msgctl:
1170 * Check permission when a message control operation specified by @cmd
1171 * is to be performed on the message queue @msq.
1172 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
1173 * @msq contains the message queue to act upon. May be NULL.
1174 * @cmd contains the operation to be performed.
Eric Paris7b41b172008-04-23 14:10:25 -04001175 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001176 * @msg_queue_msgsnd:
1177 * Check permission before a message, @msg, is enqueued on the message
1178 * queue, @msq.
1179 * @msq contains the message queue to send message to.
1180 * @msg contains the message to be enqueued.
1181 * @msqflg contains operational flags.
1182 * Return 0 if permission is granted.
1183 * @msg_queue_msgrcv:
1184 * Check permission before a message, @msg, is removed from the message
Eric Paris7b41b172008-04-23 14:10:25 -04001185 * queue, @msq. The @target task structure contains a pointer to the
1186 * process that will be receiving the message (not equal to the current
Linus Torvalds1da177e2005-04-16 15:20:36 -07001187 * process when inline receives are being performed).
1188 * @msq contains the message queue to retrieve message from.
1189 * @msg contains the message destination.
1190 * @target contains the task structure for recipient process.
1191 * @type contains the type of message requested.
1192 * @mode contains the operational flags.
1193 * Return 0 if permission is granted.
1194 *
1195 * Security hooks for System V Shared Memory Segments
1196 *
1197 * @shm_alloc_security:
1198 * Allocate and attach a security structure to the shp->shm_perm.security
1199 * field. The security field is initialized to NULL when the structure is
1200 * first created.
1201 * @shp contains the shared memory structure to be modified.
1202 * Return 0 if operation was successful and permission is granted.
1203 * @shm_free_security:
1204 * Deallocate the security struct for this memory segment.
1205 * @shp contains the shared memory structure to be modified.
1206 * @shm_associate:
1207 * Check permission when a shared memory region is requested through the
1208 * shmget system call. This hook is only called when returning the shared
1209 * memory region identifier for an existing region, not when a new shared
1210 * memory region is created.
1211 * @shp contains the shared memory structure to be modified.
1212 * @shmflg contains the operation control flags.
1213 * Return 0 if permission is granted.
1214 * @shm_shmctl:
1215 * Check permission when a shared memory control operation specified by
1216 * @cmd is to be performed on the shared memory region @shp.
1217 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1218 * @shp contains shared memory structure to be modified.
1219 * @cmd contains the operation to be performed.
1220 * Return 0 if permission is granted.
1221 * @shm_shmat:
1222 * Check permissions prior to allowing the shmat system call to attach the
1223 * shared memory segment @shp to the data segment of the calling process.
1224 * The attaching address is specified by @shmaddr.
1225 * @shp contains the shared memory structure to be modified.
1226 * @shmaddr contains the address to attach memory region to.
1227 * @shmflg contains the operational flags.
1228 * Return 0 if permission is granted.
1229 *
1230 * Security hooks for System V Semaphores
1231 *
1232 * @sem_alloc_security:
1233 * Allocate and attach a security structure to the sma->sem_perm.security
1234 * field. The security field is initialized to NULL when the structure is
1235 * first created.
1236 * @sma contains the semaphore structure
1237 * Return 0 if operation was successful and permission is granted.
1238 * @sem_free_security:
1239 * deallocate security struct for this semaphore
1240 * @sma contains the semaphore structure.
1241 * @sem_associate:
1242 * Check permission when a semaphore is requested through the semget
1243 * system call. This hook is only called when returning the semaphore
1244 * identifier for an existing semaphore, not when a new one must be
1245 * created.
1246 * @sma contains the semaphore structure.
1247 * @semflg contains the operation control flags.
1248 * Return 0 if permission is granted.
1249 * @sem_semctl:
1250 * Check permission when a semaphore operation specified by @cmd is to be
Eric Paris7b41b172008-04-23 14:10:25 -04001251 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
Linus Torvalds1da177e2005-04-16 15:20:36 -07001252 * IPC_INFO or SEM_INFO.
1253 * @sma contains the semaphore structure. May be NULL.
1254 * @cmd contains the operation to be performed.
1255 * Return 0 if permission is granted.
1256 * @sem_semop
1257 * Check permissions before performing operations on members of the
Eric Paris7b41b172008-04-23 14:10:25 -04001258 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1259 * may be modified.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001260 * @sma contains the semaphore structure.
1261 * @sops contains the operations to perform.
1262 * @nsops contains the number of operations to perform.
1263 * @alter contains the flag indicating whether changes are to be made.
1264 * Return 0 if permission is granted.
1265 *
Ingo Molnar9e488582009-05-07 19:26:19 +10001266 * @ptrace_access_check:
David Howells5cd9c582008-08-14 11:37:28 +01001267 * Check permission before allowing the current process to trace the
Linus Torvalds1da177e2005-04-16 15:20:36 -07001268 * @child process.
1269 * Security modules may also want to perform a process tracing check
1270 * during an execve in the set_security or apply_creds hooks of
David Howellsd84f4f92008-11-14 10:39:23 +11001271 * tracing check during an execve in the bprm_set_creds hook of
Linus Torvalds1da177e2005-04-16 15:20:36 -07001272 * binprm_security_ops if the process is being traced and its security
1273 * attributes would be changed by the execve.
David Howells5cd9c582008-08-14 11:37:28 +01001274 * @child contains the task_struct structure for the target process.
Stephen Smalley006ebb42008-05-19 08:32:49 -04001275 * @mode contains the PTRACE_MODE flags indicating the form of access.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001276 * Return 0 if permission is granted.
David Howells5cd9c582008-08-14 11:37:28 +01001277 * @ptrace_traceme:
1278 * Check that the @parent process has sufficient permission to trace the
1279 * current process before allowing the current process to present itself
1280 * to the @parent process for tracing.
David Howells5cd9c582008-08-14 11:37:28 +01001281 * @parent contains the task_struct structure for debugger process.
1282 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001283 * @capget:
1284 * Get the @effective, @inheritable, and @permitted capability sets for
1285 * the @target process. The hook may also perform permission checking to
1286 * determine if the current process is allowed to see the capability sets
1287 * of the @target process.
1288 * @target contains the task_struct structure for target process.
1289 * @effective contains the effective capability set.
1290 * @inheritable contains the inheritable capability set.
1291 * @permitted contains the permitted capability set.
1292 * Return 0 if the capability sets were successfully obtained.
David Howellsd84f4f92008-11-14 10:39:23 +11001293 * @capset:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001294 * Set the @effective, @inheritable, and @permitted capability sets for
David Howells1cdcbec2008-11-14 10:39:14 +11001295 * the current process.
David Howellsd84f4f92008-11-14 10:39:23 +11001296 * @new contains the new credentials structure for target process.
1297 * @old contains the current credentials structure for target process.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001298 * @effective contains the effective capability set.
1299 * @inheritable contains the inheritable capability set.
1300 * @permitted contains the permitted capability set.
David Howellsd84f4f92008-11-14 10:39:23 +11001301 * Return 0 and update @new if permission is granted.
Chris Wright12b59892006-03-25 03:07:41 -08001302 * @capable:
David Howells3699c532009-01-06 22:27:01 +00001303 * Check whether the @tsk process has the @cap capability in the indicated
1304 * credentials.
David Howells3699c532009-01-06 22:27:01 +00001305 * @cred contains the credentials to use.
Vsevolod Alekseev11be0b32011-11-05 02:35:28 -07001306 * @ns contains the user namespace we want the capability in
Chris Wright12b59892006-03-25 03:07:41 -08001307 * @cap contains the capability <include/linux/capability.h>.
David Howells3699c532009-01-06 22:27:01 +00001308 * @audit: Whether to write an audit message or not
Chris Wright12b59892006-03-25 03:07:41 -08001309 * Return 0 if the capability is granted for @tsk.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001310 * @syslog:
1311 * Check permission before accessing the kernel message ring or changing
1312 * logging to the console.
Eric Paris7b41b172008-04-23 14:10:25 -04001313 * See the syslog(2) manual page for an explanation of the @type values.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001314 * @type contains the type of action.
Kees Cook00234592010-02-03 15:36:43 -08001315 * @from_file indicates the context of action (if it came from /proc).
Linus Torvalds1da177e2005-04-16 15:20:36 -07001316 * Return 0 if permission is granted.
1317 * @settime:
1318 * Check permission to change the system time.
1319 * struct timespec and timezone are defined in include/linux/time.h
1320 * @ts contains new time
1321 * @tz contains new timezone
1322 * Return 0 if permission is granted.
1323 * @vm_enough_memory:
1324 * Check permissions for allocating a new virtual mapping.
Alan Cox34b4e4a2007-08-22 14:01:28 -07001325 * @mm contains the mm struct it is being added to.
Eric Paris7b41b172008-04-23 14:10:25 -04001326 * @pages contains the number of pages.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001327 * Return 0 if permission is granted.
1328 *
David Quigley746df9b2013-05-22 12:50:35 -04001329 * @ismaclabel:
1330 * Check if the extended attribute specified by @name
1331 * represents a MAC label. Returns 1 if name is a MAC
1332 * attribute otherwise returns 0.
1333 * @name full extended attribute name to check against
1334 * LSM as a MAC label.
1335 *
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07001336 * @secid_to_secctx:
Eric Parisd5630b92010-10-13 16:24:48 -04001337 * Convert secid to security context. If secdata is NULL the length of
1338 * the result will be returned in seclen, but no secdata will be returned.
1339 * This does mean that the length could change between calls to check the
1340 * length and the next call which actually allocates and returns the secdata.
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07001341 * @secid contains the security ID.
1342 * @secdata contains the pointer that stores the converted security context.
Eric Parisd5630b92010-10-13 16:24:48 -04001343 * @seclen pointer which contains the length of the data
David Howells63cb3442008-01-15 23:47:35 +00001344 * @secctx_to_secid:
Eric Paris7b41b172008-04-23 14:10:25 -04001345 * Convert security context to secid.
1346 * @secid contains the pointer to the generated security ID.
1347 * @secdata contains the security context.
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07001348 *
1349 * @release_secctx:
1350 * Release the security context.
1351 * @secdata contains the security context.
1352 * @seclen contains the length of the security context.
1353 *
Ahmed S. Darwish03d37d22008-03-01 22:00:05 +02001354 * Security hooks for Audit
1355 *
1356 * @audit_rule_init:
1357 * Allocate and initialize an LSM audit rule structure.
1358 * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
1359 * @op contains the operator the rule uses.
1360 * @rulestr contains the context where the rule will be applied to.
1361 * @lsmrule contains a pointer to receive the result.
1362 * Return 0 if @lsmrule has been successfully set,
1363 * -EINVAL in case of an invalid rule.
1364 *
1365 * @audit_rule_known:
1366 * Specifies whether given @rule contains any fields related to current LSM.
1367 * @rule contains the audit rule of interest.
1368 * Return 1 in case of relation found, 0 otherwise.
1369 *
1370 * @audit_rule_match:
1371 * Determine if given @secid matches a rule previously approved
1372 * by @audit_rule_known.
1373 * @secid contains the security id in question.
1374 * @field contains the field which relates to current LSM.
1375 * @op contains the operator that will be used for matching.
1376 * @rule points to the audit rule that will be checked against.
1377 * @actx points to the audit context associated with the check.
1378 * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
1379 *
1380 * @audit_rule_free:
1381 * Deallocate the LSM audit rule structure previously allocated by
1382 * audit_rule_init.
1383 * @rule contains the allocated rule
1384 *
David P. Quigley1ee65e32009-09-03 14:25:57 -04001385 * @inode_notifysecctx:
1386 * Notify the security module of what the security context of an inode
1387 * should be. Initializes the incore security context managed by the
1388 * security module for this inode. Example usage: NFS client invokes
1389 * this hook to initialize the security context in its incore inode to the
1390 * value provided by the server for the file when the server returned the
1391 * file's attributes to the client.
1392 *
1393 * Must be called with inode->i_mutex locked.
1394 *
1395 * @inode we wish to set the security context of.
1396 * @ctx contains the string which we wish to set in the inode.
1397 * @ctxlen contains the length of @ctx.
1398 *
1399 * @inode_setsecctx:
1400 * Change the security context of an inode. Updates the
1401 * incore security context managed by the security module and invokes the
1402 * fs code as needed (via __vfs_setxattr_noperm) to update any backing
1403 * xattrs that represent the context. Example usage: NFS server invokes
1404 * this hook to change the security context in its incore inode and on the
1405 * backing filesystem to a value provided by the client on a SETATTR
1406 * operation.
1407 *
1408 * Must be called with inode->i_mutex locked.
1409 *
1410 * @dentry contains the inode we wish to set the security context of.
1411 * @ctx contains the string which we wish to set in the inode.
1412 * @ctxlen contains the length of @ctx.
1413 *
1414 * @inode_getsecctx:
J. Bruce Fields4726e8f2013-05-09 11:41:04 -04001415 * On success, returns 0 and fills out @ctx and @ctxlen with the security
1416 * context for the given @inode.
David P. Quigley1ee65e32009-09-03 14:25:57 -04001417 *
rongqing.li@windriver.comfc9ff9b2011-09-06 11:35:36 +08001418 * @inode we wish to get the security context of.
David P. Quigley1ee65e32009-09-03 14:25:57 -04001419 * @ctx is a pointer in which to place the allocated security context.
1420 * @ctxlen points to the place to put the length of @ctx.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001421 * This is the main security structure.
1422 */
1423struct security_operations {
Ahmed S. Darwish076c54c2008-03-06 18:09:10 +02001424 char name[SECURITY_NAME_MAX + 1];
1425
Ingo Molnar9e488582009-05-07 19:26:19 +10001426 int (*ptrace_access_check) (struct task_struct *child, unsigned int mode);
David Howells5cd9c582008-08-14 11:37:28 +01001427 int (*ptrace_traceme) (struct task_struct *parent);
Eric Paris7b41b172008-04-23 14:10:25 -04001428 int (*capget) (struct task_struct *target,
1429 kernel_cap_t *effective,
1430 kernel_cap_t *inheritable, kernel_cap_t *permitted);
David Howellsd84f4f92008-11-14 10:39:23 +11001431 int (*capset) (struct cred *new,
1432 const struct cred *old,
1433 const kernel_cap_t *effective,
1434 const kernel_cap_t *inheritable,
1435 const kernel_cap_t *permitted);
Eric Paris6a9de492012-01-03 12:25:14 -05001436 int (*capable) (const struct cred *cred, struct user_namespace *ns,
1437 int cap, int audit);
Eric Paris7b41b172008-04-23 14:10:25 -04001438 int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
1439 int (*quota_on) (struct dentry *dentry);
Eric Paris12b30522010-11-15 18:36:29 -05001440 int (*syslog) (int type);
Richard Cochran1e6d7672011-02-01 13:50:58 +00001441 int (*settime) (const struct timespec *ts, const struct timezone *tz);
Alan Cox34b4e4a2007-08-22 14:01:28 -07001442 int (*vm_enough_memory) (struct mm_struct *mm, long pages);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001443
David Howellsa6f76f22008-11-14 10:39:24 +11001444 int (*bprm_set_creds) (struct linux_binprm *bprm);
Eric Paris7b41b172008-04-23 14:10:25 -04001445 int (*bprm_check_security) (struct linux_binprm *bprm);
1446 int (*bprm_secureexec) (struct linux_binprm *bprm);
David Howellsa6f76f22008-11-14 10:39:24 +11001447 void (*bprm_committing_creds) (struct linux_binprm *bprm);
1448 void (*bprm_committed_creds) (struct linux_binprm *bprm);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001449
Eric Paris7b41b172008-04-23 14:10:25 -04001450 int (*sb_alloc_security) (struct super_block *sb);
1451 void (*sb_free_security) (struct super_block *sb);
1452 int (*sb_copy_data) (char *orig, char *copy);
Eric Parisff36fe22011-03-03 16:09:14 -05001453 int (*sb_remount) (struct super_block *sb, void *data);
James Morris12204e22008-12-19 10:44:42 +11001454 int (*sb_kern_mount) (struct super_block *sb, int flags, void *data);
Eric Paris2069f452008-07-04 09:47:13 +10001455 int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
David Howells726c3342006-06-23 02:02:58 -07001456 int (*sb_statfs) (struct dentry *dentry);
Al Viro808d4e32012-10-11 11:42:01 -04001457 int (*sb_mount) (const char *dev_name, struct path *path,
1458 const char *type, unsigned long flags, void *data);
Eric Paris7b41b172008-04-23 14:10:25 -04001459 int (*sb_umount) (struct vfsmount *mnt, int flags);
Al Virob5266eb2008-03-22 17:48:24 -04001460 int (*sb_pivotroot) (struct path *old_path,
1461 struct path *new_path);
Eric Parise0007522008-03-05 10:31:54 -05001462 int (*sb_set_mnt_opts) (struct super_block *sb,
David Quigley649f6e72013-05-22 12:50:36 -04001463 struct security_mnt_opts *opts,
1464 unsigned long kern_flags,
1465 unsigned long *set_kern_flags);
Jeff Layton094f7b62013-04-01 08:14:24 -04001466 int (*sb_clone_mnt_opts) (const struct super_block *oldsb,
Eric Parisc9180a52007-11-30 13:00:35 -05001467 struct super_block *newsb);
Eric Parise0007522008-03-05 10:31:54 -05001468 int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
David Quigleyd47be3d2013-05-22 12:50:34 -04001469 int (*dentry_init_security) (struct dentry *dentry, int mode,
1470 struct qstr *name, void **ctx,
1471 u32 *ctxlen);
1472
Linus Torvalds1da177e2005-04-16 15:20:36 -07001473
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09001474#ifdef CONFIG_SECURITY_PATH
1475 int (*path_unlink) (struct path *dir, struct dentry *dentry);
Al Viro4572bef2011-11-21 14:56:21 -05001476 int (*path_mkdir) (struct path *dir, struct dentry *dentry, umode_t mode);
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09001477 int (*path_rmdir) (struct path *dir, struct dentry *dentry);
Al Viro04fc66e2011-11-21 14:58:38 -05001478 int (*path_mknod) (struct path *dir, struct dentry *dentry, umode_t mode,
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09001479 unsigned int dev);
Tetsuo Handaea0d3ab2010-06-02 13:24:43 +09001480 int (*path_truncate) (struct path *path);
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09001481 int (*path_symlink) (struct path *dir, struct dentry *dentry,
1482 const char *old_name);
1483 int (*path_link) (struct dentry *old_dentry, struct path *new_dir,
1484 struct dentry *new_dentry);
1485 int (*path_rename) (struct path *old_dir, struct dentry *old_dentry,
1486 struct path *new_dir, struct dentry *new_dentry);
Al Virocdcf1162011-12-08 10:51:53 -05001487 int (*path_chmod) (struct path *path, umode_t mode);
Eric W. Biedermand2b31ca2012-06-01 16:14:19 -06001488 int (*path_chown) (struct path *path, kuid_t uid, kgid_t gid);
Tetsuo Handa8b8efb42009-10-04 21:49:48 +09001489 int (*path_chroot) (struct path *path);
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09001490#endif
1491
Eric Paris7b41b172008-04-23 14:10:25 -04001492 int (*inode_alloc_security) (struct inode *inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001493 void (*inode_free_security) (struct inode *inode);
Stephen Smalley5e41ff92005-09-09 13:01:35 -07001494 int (*inode_init_security) (struct inode *inode, struct inode *dir,
Tetsuo Handa95489062013-07-25 05:44:02 +09001495 const struct qstr *qstr, const char **name,
Eric Paris2a7dba32011-02-01 11:05:39 -05001496 void **value, size_t *len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001497 int (*inode_create) (struct inode *dir,
Al Viro4acdaf22011-07-26 01:42:34 -04001498 struct dentry *dentry, umode_t mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001499 int (*inode_link) (struct dentry *old_dentry,
Eric Paris7b41b172008-04-23 14:10:25 -04001500 struct inode *dir, struct dentry *new_dentry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001501 int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
1502 int (*inode_symlink) (struct inode *dir,
Eric Paris7b41b172008-04-23 14:10:25 -04001503 struct dentry *dentry, const char *old_name);
Al Viro18bb1db2011-07-26 01:41:39 -04001504 int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, umode_t mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001505 int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
1506 int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
Al Viro1a67aaf2011-07-26 01:52:52 -04001507 umode_t mode, dev_t dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001508 int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
Eric Paris7b41b172008-04-23 14:10:25 -04001509 struct inode *new_dir, struct dentry *new_dentry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001510 int (*inode_readlink) (struct dentry *dentry);
1511 int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
Al Viroe74f71e2011-06-20 19:38:15 -04001512 int (*inode_permission) (struct inode *inode, int mask);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001513 int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
1514 int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
David Howells8f0cfa52008-04-29 00:59:41 -07001515 int (*inode_setxattr) (struct dentry *dentry, const char *name,
1516 const void *value, size_t size, int flags);
1517 void (*inode_post_setxattr) (struct dentry *dentry, const char *name,
1518 const void *value, size_t size, int flags);
1519 int (*inode_getxattr) (struct dentry *dentry, const char *name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001520 int (*inode_listxattr) (struct dentry *dentry);
David Howells8f0cfa52008-04-29 00:59:41 -07001521 int (*inode_removexattr) (struct dentry *dentry, const char *name);
Serge E. Hallynb5376772007-10-16 23:31:36 -07001522 int (*inode_need_killpriv) (struct dentry *dentry);
1523 int (*inode_killpriv) (struct dentry *dentry);
Eric Paris7b41b172008-04-23 14:10:25 -04001524 int (*inode_getsecurity) (const struct inode *inode, const char *name, void **buffer, bool alloc);
1525 int (*inode_setsecurity) (struct inode *inode, const char *name, const void *value, size_t size, int flags);
1526 int (*inode_listsecurity) (struct inode *inode, char *buffer, size_t buffer_size);
1527 void (*inode_getsecid) (const struct inode *inode, u32 *secid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001528
Eric Paris7b41b172008-04-23 14:10:25 -04001529 int (*file_permission) (struct file *file, int mask);
1530 int (*file_alloc_security) (struct file *file);
1531 void (*file_free_security) (struct file *file);
1532 int (*file_ioctl) (struct file *file, unsigned int cmd,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001533 unsigned long arg);
Al Viroe5467852012-05-30 13:30:51 -04001534 int (*mmap_addr) (unsigned long addr);
1535 int (*mmap_file) (struct file *file,
Eric Parised032182007-06-28 15:55:21 -04001536 unsigned long reqprot, unsigned long prot,
Al Viroe5467852012-05-30 13:30:51 -04001537 unsigned long flags);
Eric Paris7b41b172008-04-23 14:10:25 -04001538 int (*file_mprotect) (struct vm_area_struct *vma,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001539 unsigned long reqprot,
1540 unsigned long prot);
Eric Paris7b41b172008-04-23 14:10:25 -04001541 int (*file_lock) (struct file *file, unsigned int cmd);
1542 int (*file_fcntl) (struct file *file, unsigned int cmd,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001543 unsigned long arg);
Eric Paris7b41b172008-04-23 14:10:25 -04001544 int (*file_set_fowner) (struct file *file);
1545 int (*file_send_sigiotask) (struct task_struct *tsk,
1546 struct fown_struct *fown, int sig);
1547 int (*file_receive) (struct file *file);
Eric Paris83d49852012-04-04 13:45:40 -04001548 int (*file_open) (struct file *file, const struct cred *cred);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001549
1550 int (*task_create) (unsigned long clone_flags);
Kees Cook1a2a4d02011-12-21 12:17:03 -08001551 void (*task_free) (struct task_struct *task);
David Howellsee18d642009-09-02 09:14:21 +01001552 int (*cred_alloc_blank) (struct cred *cred, gfp_t gfp);
David Howellsf1752ee2008-11-14 10:39:17 +11001553 void (*cred_free) (struct cred *cred);
David Howellsd84f4f92008-11-14 10:39:23 +11001554 int (*cred_prepare)(struct cred *new, const struct cred *old,
1555 gfp_t gfp);
David Howellsee18d642009-09-02 09:14:21 +01001556 void (*cred_transfer)(struct cred *new, const struct cred *old);
David Howells3a3b7ce2008-11-14 10:39:28 +11001557 int (*kernel_act_as)(struct cred *new, u32 secid);
1558 int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
Eric Parisdd8dbf22009-11-03 16:35:32 +11001559 int (*kernel_module_request)(char *kmod_name);
Kees Cook2e72d512012-10-16 07:32:07 +10301560 int (*kernel_module_from_file)(struct file *file);
David Howellsd84f4f92008-11-14 10:39:23 +11001561 int (*task_fix_setuid) (struct cred *new, const struct cred *old,
1562 int flags);
Eric Paris7b41b172008-04-23 14:10:25 -04001563 int (*task_setpgid) (struct task_struct *p, pid_t pgid);
1564 int (*task_getpgid) (struct task_struct *p);
1565 int (*task_getsid) (struct task_struct *p);
1566 void (*task_getsecid) (struct task_struct *p, u32 *secid);
Eric Paris7b41b172008-04-23 14:10:25 -04001567 int (*task_setnice) (struct task_struct *p, int nice);
1568 int (*task_setioprio) (struct task_struct *p, int ioprio);
1569 int (*task_getioprio) (struct task_struct *p);
Jiri Slaby8fd00b42009-08-26 18:41:16 +02001570 int (*task_setrlimit) (struct task_struct *p, unsigned int resource,
1571 struct rlimit *new_rlim);
KOSAKI Motohirob0ae1982010-10-15 04:21:18 +09001572 int (*task_setscheduler) (struct task_struct *p);
Eric Paris7b41b172008-04-23 14:10:25 -04001573 int (*task_getscheduler) (struct task_struct *p);
1574 int (*task_movememory) (struct task_struct *p);
1575 int (*task_kill) (struct task_struct *p,
1576 struct siginfo *info, int sig, u32 secid);
1577 int (*task_wait) (struct task_struct *p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001578 int (*task_prctl) (int option, unsigned long arg2,
1579 unsigned long arg3, unsigned long arg4,
David Howellsd84f4f92008-11-14 10:39:23 +11001580 unsigned long arg5);
Eric Paris7b41b172008-04-23 14:10:25 -04001581 void (*task_to_inode) (struct task_struct *p, struct inode *inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001582
Eric Paris7b41b172008-04-23 14:10:25 -04001583 int (*ipc_permission) (struct kern_ipc_perm *ipcp, short flag);
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02001584 void (*ipc_getsecid) (struct kern_ipc_perm *ipcp, u32 *secid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001585
Eric Paris7b41b172008-04-23 14:10:25 -04001586 int (*msg_msg_alloc_security) (struct msg_msg *msg);
1587 void (*msg_msg_free_security) (struct msg_msg *msg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001588
Eric Paris7b41b172008-04-23 14:10:25 -04001589 int (*msg_queue_alloc_security) (struct msg_queue *msq);
1590 void (*msg_queue_free_security) (struct msg_queue *msq);
1591 int (*msg_queue_associate) (struct msg_queue *msq, int msqflg);
1592 int (*msg_queue_msgctl) (struct msg_queue *msq, int cmd);
1593 int (*msg_queue_msgsnd) (struct msg_queue *msq,
1594 struct msg_msg *msg, int msqflg);
1595 int (*msg_queue_msgrcv) (struct msg_queue *msq,
1596 struct msg_msg *msg,
1597 struct task_struct *target,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001598 long type, int mode);
1599
Eric Paris7b41b172008-04-23 14:10:25 -04001600 int (*shm_alloc_security) (struct shmid_kernel *shp);
1601 void (*shm_free_security) (struct shmid_kernel *shp);
1602 int (*shm_associate) (struct shmid_kernel *shp, int shmflg);
1603 int (*shm_shmctl) (struct shmid_kernel *shp, int cmd);
1604 int (*shm_shmat) (struct shmid_kernel *shp,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001605 char __user *shmaddr, int shmflg);
1606
Eric Paris7b41b172008-04-23 14:10:25 -04001607 int (*sem_alloc_security) (struct sem_array *sma);
1608 void (*sem_free_security) (struct sem_array *sma);
1609 int (*sem_associate) (struct sem_array *sma, int semflg);
1610 int (*sem_semctl) (struct sem_array *sma, int cmd);
1611 int (*sem_semop) (struct sem_array *sma,
1612 struct sembuf *sops, unsigned nsops, int alter);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001613
Eric Paris7b41b172008-04-23 14:10:25 -04001614 int (*netlink_send) (struct sock *sk, struct sk_buff *skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001615
Linus Torvalds1da177e2005-04-16 15:20:36 -07001616 void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1617
Eric Paris7b41b172008-04-23 14:10:25 -04001618 int (*getprocattr) (struct task_struct *p, char *name, char **value);
1619 int (*setprocattr) (struct task_struct *p, char *name, void *value, size_t size);
David Quigley746df9b2013-05-22 12:50:35 -04001620 int (*ismaclabel) (const char *name);
Eric Paris7b41b172008-04-23 14:10:25 -04001621 int (*secid_to_secctx) (u32 secid, char **secdata, u32 *seclen);
David Howells7bf570d2008-04-29 20:52:51 +01001622 int (*secctx_to_secid) (const char *secdata, u32 seclen, u32 *secid);
Eric Paris7b41b172008-04-23 14:10:25 -04001623 void (*release_secctx) (char *secdata, u32 seclen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001624
David P. Quigley1ee65e32009-09-03 14:25:57 -04001625 int (*inode_notifysecctx)(struct inode *inode, void *ctx, u32 ctxlen);
1626 int (*inode_setsecctx)(struct dentry *dentry, void *ctx, u32 ctxlen);
1627 int (*inode_getsecctx)(struct inode *inode, void **ctx, u32 *ctxlen);
1628
Linus Torvalds1da177e2005-04-16 15:20:36 -07001629#ifdef CONFIG_SECURITY_NETWORK
David S. Miller3610cda2011-01-05 15:38:53 -08001630 int (*unix_stream_connect) (struct sock *sock, struct sock *other, struct sock *newsk);
Eric Paris7b41b172008-04-23 14:10:25 -04001631 int (*unix_may_send) (struct socket *sock, struct socket *other);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001632
1633 int (*socket_create) (int family, int type, int protocol, int kern);
Eric Paris7b41b172008-04-23 14:10:25 -04001634 int (*socket_post_create) (struct socket *sock, int family,
Venkat Yekkirala7420ed22006-08-04 23:17:57 -07001635 int type, int protocol, int kern);
Eric Paris7b41b172008-04-23 14:10:25 -04001636 int (*socket_bind) (struct socket *sock,
1637 struct sockaddr *address, int addrlen);
1638 int (*socket_connect) (struct socket *sock,
1639 struct sockaddr *address, int addrlen);
1640 int (*socket_listen) (struct socket *sock, int backlog);
1641 int (*socket_accept) (struct socket *sock, struct socket *newsock);
Eric Paris7b41b172008-04-23 14:10:25 -04001642 int (*socket_sendmsg) (struct socket *sock,
1643 struct msghdr *msg, int size);
1644 int (*socket_recvmsg) (struct socket *sock,
1645 struct msghdr *msg, int size, int flags);
1646 int (*socket_getsockname) (struct socket *sock);
1647 int (*socket_getpeername) (struct socket *sock);
1648 int (*socket_getsockopt) (struct socket *sock, int level, int optname);
1649 int (*socket_setsockopt) (struct socket *sock, int level, int optname);
1650 int (*socket_shutdown) (struct socket *sock, int how);
1651 int (*socket_sock_rcv_skb) (struct sock *sk, struct sk_buff *skb);
Catherine Zhang2c7946a2006-03-20 22:41:23 -08001652 int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07001653 int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
Al Viro7d877f32005-10-21 03:20:43 -04001654 int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001655 void (*sk_free_security) (struct sock *sk);
Venkat Yekkirala892c1412006-08-04 23:08:56 -07001656 void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07001657 void (*sk_getsecid) (struct sock *sk, u32 *secid);
Eric Paris7b41b172008-04-23 14:10:25 -04001658 void (*sock_graft) (struct sock *sk, struct socket *parent);
1659 int (*inet_conn_request) (struct sock *sk, struct sk_buff *skb,
1660 struct request_sock *req);
1661 void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req);
1662 void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb);
Eric Paris2606fd12010-10-13 16:24:41 -04001663 int (*secmark_relabel_packet) (u32 secid);
1664 void (*secmark_refcount_inc) (void);
1665 void (*secmark_refcount_dec) (void);
Eric Paris7b41b172008-04-23 14:10:25 -04001666 void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
Paul Moore5dbbaf22013-01-14 07:12:19 +00001667 int (*tun_dev_alloc_security) (void **security);
1668 void (*tun_dev_free_security) (void *security);
1669 int (*tun_dev_create) (void);
1670 int (*tun_dev_attach_queue) (void *security);
1671 int (*tun_dev_attach) (struct sock *sk, void *security);
1672 int (*tun_dev_open) (void *security);
Eric Dumazetca10b9e2013-04-08 17:58:11 +00001673 void (*skb_owned_by) (struct sk_buff *skb, struct sock *sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001674#endif /* CONFIG_SECURITY_NETWORK */
David Howells29db9192005-10-30 15:02:44 -08001675
Trent Jaegerdf718372005-12-13 23:12:27 -08001676#ifdef CONFIG_SECURITY_NETWORK_XFRM
Paul Moore03e1ad72008-04-12 19:07:52 -07001677 int (*xfrm_policy_alloc_security) (struct xfrm_sec_ctx **ctxp,
Venkat Yekkiralac1a856c2006-11-08 17:03:44 -06001678 struct xfrm_user_sec_ctx *sec_ctx);
Paul Moore03e1ad72008-04-12 19:07:52 -07001679 int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
1680 void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
1681 int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001682 int (*xfrm_state_alloc_security) (struct xfrm_state *x,
Venkat Yekkiralac1a856c2006-11-08 17:03:44 -06001683 struct xfrm_user_sec_ctx *sec_ctx,
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001684 u32 secid);
Trent Jaegerdf718372005-12-13 23:12:27 -08001685 void (*xfrm_state_free_security) (struct xfrm_state *x);
Catherine Zhangc8c05a82006-06-08 23:39:49 -07001686 int (*xfrm_state_delete_security) (struct xfrm_state *x);
Eric Paris7b41b172008-04-23 14:10:25 -04001687 int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1688 int (*xfrm_state_pol_flow_match) (struct xfrm_state *x,
1689 struct xfrm_policy *xp,
David S. Millere33f7702011-02-22 18:13:15 -08001690 const struct flowi *fl);
Eric Paris7b41b172008-04-23 14:10:25 -04001691 int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall);
Trent Jaegerdf718372005-12-13 23:12:27 -08001692#endif /* CONFIG_SECURITY_NETWORK_XFRM */
1693
David Howells29db9192005-10-30 15:02:44 -08001694 /* key management security hooks */
1695#ifdef CONFIG_KEYS
David Howellsd84f4f92008-11-14 10:39:23 +11001696 int (*key_alloc) (struct key *key, const struct cred *cred, unsigned long flags);
Eric Paris7b41b172008-04-23 14:10:25 -04001697 void (*key_free) (struct key *key);
1698 int (*key_permission) (key_ref_t key_ref,
David Howellsd84f4f92008-11-14 10:39:23 +11001699 const struct cred *cred,
Eric Paris7b41b172008-04-23 14:10:25 -04001700 key_perm_t perm);
David Howells70a5bb72008-04-29 01:01:26 -07001701 int (*key_getsecurity)(struct key *key, char **_buffer);
David Howells29db9192005-10-30 15:02:44 -08001702#endif /* CONFIG_KEYS */
1703
Ahmed S. Darwish03d37d22008-03-01 22:00:05 +02001704#ifdef CONFIG_AUDIT
Eric Paris7b41b172008-04-23 14:10:25 -04001705 int (*audit_rule_init) (u32 field, u32 op, char *rulestr, void **lsmrule);
1706 int (*audit_rule_known) (struct audit_krule *krule);
1707 int (*audit_rule_match) (u32 secid, u32 field, u32 op, void *lsmrule,
1708 struct audit_context *actx);
1709 void (*audit_rule_free) (void *lsmrule);
Ahmed S. Darwish03d37d22008-03-01 22:00:05 +02001710#endif /* CONFIG_AUDIT */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001711};
1712
Linus Torvalds1da177e2005-04-16 15:20:36 -07001713/* prototypes */
Eric Paris7b41b172008-04-23 14:10:25 -04001714extern int security_init(void);
Ahmed S. Darwish076c54c2008-03-06 18:09:10 +02001715extern int security_module_enable(struct security_operations *ops);
Eric Paris7b41b172008-04-23 14:10:25 -04001716extern int register_security(struct security_operations *ops);
James Morris5dbe3042011-08-30 13:48:53 +10001717extern void __init security_fixup_ops(struct security_operations *ops);
1718
Linus Torvalds1da177e2005-04-16 15:20:36 -07001719
James Morris20510f22007-10-16 23:31:32 -07001720/* Security operations */
Ingo Molnar9e488582009-05-07 19:26:19 +10001721int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
David Howells5cd9c582008-08-14 11:37:28 +01001722int security_ptrace_traceme(struct task_struct *parent);
James Morris20510f22007-10-16 23:31:32 -07001723int security_capget(struct task_struct *target,
Eric Paris7b41b172008-04-23 14:10:25 -04001724 kernel_cap_t *effective,
1725 kernel_cap_t *inheritable,
1726 kernel_cap_t *permitted);
David Howellsd84f4f92008-11-14 10:39:23 +11001727int security_capset(struct cred *new, const struct cred *old,
1728 const kernel_cap_t *effective,
1729 const kernel_cap_t *inheritable,
1730 const kernel_cap_t *permitted);
Eric Parisb7e724d2012-01-03 12:25:15 -05001731int security_capable(const struct cred *cred, struct user_namespace *ns,
Serge E. Hallyn34867402011-03-23 16:43:17 -07001732 int cap);
Eric Parisc7eba4a2012-01-03 12:25:15 -05001733int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
1734 int cap);
James Morris20510f22007-10-16 23:31:32 -07001735int security_quotactl(int cmds, int type, int id, struct super_block *sb);
1736int security_quota_on(struct dentry *dentry);
Eric Paris12b30522010-11-15 18:36:29 -05001737int security_syslog(int type);
Richard Cochran1e6d7672011-02-01 13:50:58 +00001738int security_settime(const struct timespec *ts, const struct timezone *tz);
James Morris20510f22007-10-16 23:31:32 -07001739int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
David Howellsa6f76f22008-11-14 10:39:24 +11001740int security_bprm_set_creds(struct linux_binprm *bprm);
James Morris20510f22007-10-16 23:31:32 -07001741int security_bprm_check(struct linux_binprm *bprm);
David Howellsa6f76f22008-11-14 10:39:24 +11001742void security_bprm_committing_creds(struct linux_binprm *bprm);
1743void security_bprm_committed_creds(struct linux_binprm *bprm);
James Morris20510f22007-10-16 23:31:32 -07001744int security_bprm_secureexec(struct linux_binprm *bprm);
1745int security_sb_alloc(struct super_block *sb);
1746void security_sb_free(struct super_block *sb);
Eric Parise0007522008-03-05 10:31:54 -05001747int security_sb_copy_data(char *orig, char *copy);
Eric Parisff36fe22011-03-03 16:09:14 -05001748int security_sb_remount(struct super_block *sb, void *data);
James Morris12204e22008-12-19 10:44:42 +11001749int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
Eric Paris2069f452008-07-04 09:47:13 +10001750int security_sb_show_options(struct seq_file *m, struct super_block *sb);
James Morris20510f22007-10-16 23:31:32 -07001751int security_sb_statfs(struct dentry *dentry);
Al Viro808d4e32012-10-11 11:42:01 -04001752int security_sb_mount(const char *dev_name, struct path *path,
1753 const char *type, unsigned long flags, void *data);
James Morris20510f22007-10-16 23:31:32 -07001754int security_sb_umount(struct vfsmount *mnt, int flags);
Al Virob5266eb2008-03-22 17:48:24 -04001755int security_sb_pivotroot(struct path *old_path, struct path *new_path);
David Quigley649f6e72013-05-22 12:50:36 -04001756int security_sb_set_mnt_opts(struct super_block *sb,
1757 struct security_mnt_opts *opts,
1758 unsigned long kern_flags,
1759 unsigned long *set_kern_flags);
Jeff Layton094f7b62013-04-01 08:14:24 -04001760int security_sb_clone_mnt_opts(const struct super_block *oldsb,
Eric Parisc9180a52007-11-30 13:00:35 -05001761 struct super_block *newsb);
Eric Parise0007522008-03-05 10:31:54 -05001762int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
David Quigleyd47be3d2013-05-22 12:50:34 -04001763int security_dentry_init_security(struct dentry *dentry, int mode,
1764 struct qstr *name, void **ctx,
1765 u32 *ctxlen);
Eric Parisc9180a52007-11-30 13:00:35 -05001766
James Morris20510f22007-10-16 23:31:32 -07001767int security_inode_alloc(struct inode *inode);
1768void security_inode_free(struct inode *inode);
1769int security_inode_init_security(struct inode *inode, struct inode *dir,
Mimi Zohar9d8f13b2011-06-06 15:29:25 -04001770 const struct qstr *qstr,
1771 initxattrs initxattrs, void *fs_data);
1772int security_old_inode_init_security(struct inode *inode, struct inode *dir,
Tetsuo Handa95489062013-07-25 05:44:02 +09001773 const struct qstr *qstr, const char **name,
Mimi Zohar9d8f13b2011-06-06 15:29:25 -04001774 void **value, size_t *len);
Al Viro4acdaf22011-07-26 01:42:34 -04001775int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
James Morris20510f22007-10-16 23:31:32 -07001776int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1777 struct dentry *new_dentry);
1778int security_inode_unlink(struct inode *dir, struct dentry *dentry);
1779int security_inode_symlink(struct inode *dir, struct dentry *dentry,
Eric Paris7b41b172008-04-23 14:10:25 -04001780 const char *old_name);
Al Viro18bb1db2011-07-26 01:41:39 -04001781int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
James Morris20510f22007-10-16 23:31:32 -07001782int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
Al Viro1a67aaf2011-07-26 01:52:52 -04001783int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
James Morris20510f22007-10-16 23:31:32 -07001784int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
Eric Paris7b41b172008-04-23 14:10:25 -04001785 struct inode *new_dir, struct dentry *new_dentry);
James Morris20510f22007-10-16 23:31:32 -07001786int security_inode_readlink(struct dentry *dentry);
1787int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
Al Virob77b0642008-07-17 09:37:02 -04001788int security_inode_permission(struct inode *inode, int mask);
James Morris20510f22007-10-16 23:31:32 -07001789int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
1790int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
David Howells8f0cfa52008-04-29 00:59:41 -07001791int security_inode_setxattr(struct dentry *dentry, const char *name,
1792 const void *value, size_t size, int flags);
1793void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1794 const void *value, size_t size, int flags);
1795int security_inode_getxattr(struct dentry *dentry, const char *name);
James Morris20510f22007-10-16 23:31:32 -07001796int security_inode_listxattr(struct dentry *dentry);
David Howells8f0cfa52008-04-29 00:59:41 -07001797int security_inode_removexattr(struct dentry *dentry, const char *name);
Serge E. Hallynb5376772007-10-16 23:31:36 -07001798int security_inode_need_killpriv(struct dentry *dentry);
1799int security_inode_killpriv(struct dentry *dentry);
David P. Quigley42492592008-02-04 22:29:39 -08001800int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
James Morris20510f22007-10-16 23:31:32 -07001801int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1802int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02001803void security_inode_getsecid(const struct inode *inode, u32 *secid);
James Morris20510f22007-10-16 23:31:32 -07001804int security_file_permission(struct file *file, int mask);
1805int security_file_alloc(struct file *file);
1806void security_file_free(struct file *file);
1807int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
Al Viro8b3ec682012-05-30 17:11:23 -04001808int security_mmap_file(struct file *file, unsigned long prot,
1809 unsigned long flags);
Al Viroe5467852012-05-30 13:30:51 -04001810int security_mmap_addr(unsigned long addr);
James Morris20510f22007-10-16 23:31:32 -07001811int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
Eric Paris7b41b172008-04-23 14:10:25 -04001812 unsigned long prot);
James Morris20510f22007-10-16 23:31:32 -07001813int security_file_lock(struct file *file, unsigned int cmd);
1814int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
1815int security_file_set_fowner(struct file *file);
1816int security_file_send_sigiotask(struct task_struct *tsk,
Eric Paris7b41b172008-04-23 14:10:25 -04001817 struct fown_struct *fown, int sig);
James Morris20510f22007-10-16 23:31:32 -07001818int security_file_receive(struct file *file);
Eric Paris83d49852012-04-04 13:45:40 -04001819int security_file_open(struct file *file, const struct cred *cred);
James Morris20510f22007-10-16 23:31:32 -07001820int security_task_create(unsigned long clone_flags);
Kees Cook1a2a4d02011-12-21 12:17:03 -08001821void security_task_free(struct task_struct *task);
David Howellsee18d642009-09-02 09:14:21 +01001822int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
David Howellsf1752ee2008-11-14 10:39:17 +11001823void security_cred_free(struct cred *cred);
David Howellsd84f4f92008-11-14 10:39:23 +11001824int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
David Howellsee18d642009-09-02 09:14:21 +01001825void security_transfer_creds(struct cred *new, const struct cred *old);
David Howells3a3b7ce2008-11-14 10:39:28 +11001826int security_kernel_act_as(struct cred *new, u32 secid);
1827int security_kernel_create_files_as(struct cred *new, struct inode *inode);
Eric Parisdd8dbf22009-11-03 16:35:32 +11001828int security_kernel_module_request(char *kmod_name);
Kees Cook2e72d512012-10-16 07:32:07 +10301829int security_kernel_module_from_file(struct file *file);
David Howellsd84f4f92008-11-14 10:39:23 +11001830int security_task_fix_setuid(struct cred *new, const struct cred *old,
1831 int flags);
James Morris20510f22007-10-16 23:31:32 -07001832int security_task_setpgid(struct task_struct *p, pid_t pgid);
1833int security_task_getpgid(struct task_struct *p);
1834int security_task_getsid(struct task_struct *p);
1835void security_task_getsecid(struct task_struct *p, u32 *secid);
James Morris20510f22007-10-16 23:31:32 -07001836int security_task_setnice(struct task_struct *p, int nice);
1837int security_task_setioprio(struct task_struct *p, int ioprio);
1838int security_task_getioprio(struct task_struct *p);
Jiri Slaby8fd00b42009-08-26 18:41:16 +02001839int security_task_setrlimit(struct task_struct *p, unsigned int resource,
1840 struct rlimit *new_rlim);
KOSAKI Motohirob0ae1982010-10-15 04:21:18 +09001841int security_task_setscheduler(struct task_struct *p);
James Morris20510f22007-10-16 23:31:32 -07001842int security_task_getscheduler(struct task_struct *p);
1843int security_task_movememory(struct task_struct *p);
1844int security_task_kill(struct task_struct *p, struct siginfo *info,
1845 int sig, u32 secid);
1846int security_task_wait(struct task_struct *p);
1847int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
David Howellsd84f4f92008-11-14 10:39:23 +11001848 unsigned long arg4, unsigned long arg5);
James Morris20510f22007-10-16 23:31:32 -07001849void security_task_to_inode(struct task_struct *p, struct inode *inode);
1850int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02001851void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
James Morris20510f22007-10-16 23:31:32 -07001852int security_msg_msg_alloc(struct msg_msg *msg);
1853void security_msg_msg_free(struct msg_msg *msg);
1854int security_msg_queue_alloc(struct msg_queue *msq);
1855void security_msg_queue_free(struct msg_queue *msq);
1856int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
1857int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
1858int security_msg_queue_msgsnd(struct msg_queue *msq,
Eric Paris7b41b172008-04-23 14:10:25 -04001859 struct msg_msg *msg, int msqflg);
James Morris20510f22007-10-16 23:31:32 -07001860int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
Eric Paris7b41b172008-04-23 14:10:25 -04001861 struct task_struct *target, long type, int mode);
James Morris20510f22007-10-16 23:31:32 -07001862int security_shm_alloc(struct shmid_kernel *shp);
1863void security_shm_free(struct shmid_kernel *shp);
1864int security_shm_associate(struct shmid_kernel *shp, int shmflg);
1865int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
1866int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
1867int security_sem_alloc(struct sem_array *sma);
1868void security_sem_free(struct sem_array *sma);
1869int security_sem_associate(struct sem_array *sma, int semflg);
1870int security_sem_semctl(struct sem_array *sma, int cmd);
1871int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1872 unsigned nsops, int alter);
Eric Paris7b41b172008-04-23 14:10:25 -04001873void security_d_instantiate(struct dentry *dentry, struct inode *inode);
James Morris20510f22007-10-16 23:31:32 -07001874int security_getprocattr(struct task_struct *p, char *name, char **value);
1875int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
1876int security_netlink_send(struct sock *sk, struct sk_buff *skb);
David Quigley746df9b2013-05-22 12:50:35 -04001877int security_ismaclabel(const char *name);
James Morris20510f22007-10-16 23:31:32 -07001878int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
David Howells7bf570d2008-04-29 20:52:51 +01001879int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
James Morris20510f22007-10-16 23:31:32 -07001880void security_release_secctx(char *secdata, u32 seclen);
1881
David P. Quigley1ee65e32009-09-03 14:25:57 -04001882int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
1883int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
1884int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001885#else /* CONFIG_SECURITY */
Eric Parise0007522008-03-05 10:31:54 -05001886struct security_mnt_opts {
1887};
1888
1889static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
1890{
1891}
1892
1893static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
1894{
1895}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001896
1897/*
1898 * This is the default capabilities functionality. Most of these functions
1899 * are just stubbed out, but a few must call the proper capable code.
1900 */
1901
1902static inline int security_init(void)
1903{
1904 return 0;
1905}
1906
Ingo Molnar9e488582009-05-07 19:26:19 +10001907static inline int security_ptrace_access_check(struct task_struct *child,
David Howells5cd9c582008-08-14 11:37:28 +01001908 unsigned int mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001909{
Ingo Molnar9e488582009-05-07 19:26:19 +10001910 return cap_ptrace_access_check(child, mode);
David Howells5cd9c582008-08-14 11:37:28 +01001911}
1912
Alexander Beregalov5e186b52008-08-17 05:34:20 +04001913static inline int security_ptrace_traceme(struct task_struct *parent)
David Howells5cd9c582008-08-14 11:37:28 +01001914{
1915 return cap_ptrace_traceme(parent);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001916}
1917
Eric Paris7b41b172008-04-23 14:10:25 -04001918static inline int security_capget(struct task_struct *target,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001919 kernel_cap_t *effective,
1920 kernel_cap_t *inheritable,
1921 kernel_cap_t *permitted)
1922{
Eric Paris7b41b172008-04-23 14:10:25 -04001923 return cap_capget(target, effective, inheritable, permitted);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001924}
1925
David Howellsd84f4f92008-11-14 10:39:23 +11001926static inline int security_capset(struct cred *new,
1927 const struct cred *old,
1928 const kernel_cap_t *effective,
1929 const kernel_cap_t *inheritable,
1930 const kernel_cap_t *permitted)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001931{
David Howellsd84f4f92008-11-14 10:39:23 +11001932 return cap_capset(new, old, effective, inheritable, permitted);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001933}
1934
Eric Parisb7e724d2012-01-03 12:25:15 -05001935static inline int security_capable(const struct cred *cred,
1936 struct user_namespace *ns, int cap)
Chris Wright12b59892006-03-25 03:07:41 -08001937{
Eric Paris6a9de492012-01-03 12:25:14 -05001938 return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT);
Eric Paris06112162008-11-11 22:02:50 +11001939}
1940
Eric Parisc7eba4a2012-01-03 12:25:15 -05001941static inline int security_capable_noaudit(const struct cred *cred,
1942 struct user_namespace *ns, int cap) {
1943 return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
Chris Wright12b59892006-03-25 03:07:41 -08001944}
1945
Eric Paris7b41b172008-04-23 14:10:25 -04001946static inline int security_quotactl(int cmds, int type, int id,
1947 struct super_block *sb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001948{
1949 return 0;
1950}
1951
Eric Paris7b41b172008-04-23 14:10:25 -04001952static inline int security_quota_on(struct dentry *dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001953{
1954 return 0;
1955}
1956
Eric Paris12b30522010-11-15 18:36:29 -05001957static inline int security_syslog(int type)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001958{
Eric Paris12b30522010-11-15 18:36:29 -05001959 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001960}
1961
Richard Cochran1e6d7672011-02-01 13:50:58 +00001962static inline int security_settime(const struct timespec *ts,
1963 const struct timezone *tz)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001964{
1965 return cap_settime(ts, tz);
1966}
1967
Alan Cox34b4e4a2007-08-22 14:01:28 -07001968static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
1969{
1970 return cap_vm_enough_memory(mm, pages);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001971}
1972
David Howellsa6f76f22008-11-14 10:39:24 +11001973static inline int security_bprm_set_creds(struct linux_binprm *bprm)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001974{
David Howellsa6f76f22008-11-14 10:39:24 +11001975 return cap_bprm_set_creds(bprm);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001976}
1977
Eric Paris7b41b172008-04-23 14:10:25 -04001978static inline int security_bprm_check(struct linux_binprm *bprm)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001979{
1980 return 0;
1981}
1982
David Howellsa6f76f22008-11-14 10:39:24 +11001983static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
1984{
1985}
1986
1987static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
1988{
1989}
1990
Eric Paris7b41b172008-04-23 14:10:25 -04001991static inline int security_bprm_secureexec(struct linux_binprm *bprm)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001992{
1993 return cap_bprm_secureexec(bprm);
1994}
1995
Eric Paris7b41b172008-04-23 14:10:25 -04001996static inline int security_sb_alloc(struct super_block *sb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001997{
1998 return 0;
1999}
2000
Eric Paris7b41b172008-04-23 14:10:25 -04002001static inline void security_sb_free(struct super_block *sb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002002{ }
2003
Eric Paris7b41b172008-04-23 14:10:25 -04002004static inline int security_sb_copy_data(char *orig, char *copy)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002005{
2006 return 0;
2007}
2008
Eric Parisff36fe22011-03-03 16:09:14 -05002009static inline int security_sb_remount(struct super_block *sb, void *data)
2010{
2011 return 0;
2012}
2013
James Morris12204e22008-12-19 10:44:42 +11002014static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002015{
2016 return 0;
2017}
2018
Eric Paris2069f452008-07-04 09:47:13 +10002019static inline int security_sb_show_options(struct seq_file *m,
2020 struct super_block *sb)
2021{
2022 return 0;
2023}
2024
Eric Paris7b41b172008-04-23 14:10:25 -04002025static inline int security_sb_statfs(struct dentry *dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002026{
2027 return 0;
2028}
2029
Al Viro808d4e32012-10-11 11:42:01 -04002030static inline int security_sb_mount(const char *dev_name, struct path *path,
2031 const char *type, unsigned long flags,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002032 void *data)
2033{
2034 return 0;
2035}
2036
Eric Paris7b41b172008-04-23 14:10:25 -04002037static inline int security_sb_umount(struct vfsmount *mnt, int flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002038{
2039 return 0;
2040}
2041
Eric Paris7b41b172008-04-23 14:10:25 -04002042static inline int security_sb_pivotroot(struct path *old_path,
2043 struct path *new_path)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002044{
2045 return 0;
2046}
2047
Eric Parise0007522008-03-05 10:31:54 -05002048static inline int security_sb_set_mnt_opts(struct super_block *sb,
David Quigley649f6e72013-05-22 12:50:36 -04002049 struct security_mnt_opts *opts,
2050 unsigned long kern_flags,
2051 unsigned long *set_kern_flags)
Eric Parise0007522008-03-05 10:31:54 -05002052{
2053 return 0;
2054}
2055
Jeff Layton094f7b62013-04-01 08:14:24 -04002056static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
Eric Parise0007522008-03-05 10:31:54 -05002057 struct super_block *newsb)
Jeff Layton094f7b62013-04-01 08:14:24 -04002058{
2059 return 0;
2060}
Eric Parise0007522008-03-05 10:31:54 -05002061
2062static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
2063{
2064 return 0;
2065}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002066
Eric Paris7b41b172008-04-23 14:10:25 -04002067static inline int security_inode_alloc(struct inode *inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002068{
2069 return 0;
2070}
2071
Eric Paris7b41b172008-04-23 14:10:25 -04002072static inline void security_inode_free(struct inode *inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002073{ }
Stephen Smalley5e41ff92005-09-09 13:01:35 -07002074
David Quigleyd47be3d2013-05-22 12:50:34 -04002075static inline int security_dentry_init_security(struct dentry *dentry,
2076 int mode,
2077 struct qstr *name,
2078 void **ctx,
2079 u32 *ctxlen)
2080{
2081 return -EOPNOTSUPP;
2082}
2083
2084
Eric Paris7b41b172008-04-23 14:10:25 -04002085static inline int security_inode_init_security(struct inode *inode,
Stephen Smalley5e41ff92005-09-09 13:01:35 -07002086 struct inode *dir,
Eric Paris2a7dba32011-02-01 11:05:39 -05002087 const struct qstr *qstr,
Andrew Morton1933ca82011-11-15 15:11:44 -08002088 const initxattrs initxattrs,
Mimi Zohar9d8f13b2011-06-06 15:29:25 -04002089 void *fs_data)
Stephen Smalley5e41ff92005-09-09 13:01:35 -07002090{
Mimi Zohar1e39f382011-08-15 09:09:16 -04002091 return 0;
Stephen Smalley5e41ff92005-09-09 13:01:35 -07002092}
Eric Paris7b41b172008-04-23 14:10:25 -04002093
Mimi Zohar1e39f382011-08-15 09:09:16 -04002094static inline int security_old_inode_init_security(struct inode *inode,
2095 struct inode *dir,
2096 const struct qstr *qstr,
Tetsuo Handa95489062013-07-25 05:44:02 +09002097 const char **name,
2098 void **value, size_t *len)
Mimi Zohare1c9b232011-08-11 00:22:51 -04002099{
Jan Kara30e05322012-01-03 13:14:29 +01002100 return -EOPNOTSUPP;
Mimi Zohare1c9b232011-08-11 00:22:51 -04002101}
2102
Eric Paris7b41b172008-04-23 14:10:25 -04002103static inline int security_inode_create(struct inode *dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002104 struct dentry *dentry,
Al Viro4acdaf22011-07-26 01:42:34 -04002105 umode_t mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002106{
2107 return 0;
2108}
2109
Eric Paris7b41b172008-04-23 14:10:25 -04002110static inline int security_inode_link(struct dentry *old_dentry,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002111 struct inode *dir,
2112 struct dentry *new_dentry)
2113{
2114 return 0;
2115}
2116
Eric Paris7b41b172008-04-23 14:10:25 -04002117static inline int security_inode_unlink(struct inode *dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002118 struct dentry *dentry)
2119{
2120 return 0;
2121}
2122
Eric Paris7b41b172008-04-23 14:10:25 -04002123static inline int security_inode_symlink(struct inode *dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002124 struct dentry *dentry,
2125 const char *old_name)
2126{
2127 return 0;
2128}
2129
Eric Paris7b41b172008-04-23 14:10:25 -04002130static inline int security_inode_mkdir(struct inode *dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002131 struct dentry *dentry,
2132 int mode)
2133{
2134 return 0;
2135}
2136
Eric Paris7b41b172008-04-23 14:10:25 -04002137static inline int security_inode_rmdir(struct inode *dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002138 struct dentry *dentry)
2139{
2140 return 0;
2141}
2142
Eric Paris7b41b172008-04-23 14:10:25 -04002143static inline int security_inode_mknod(struct inode *dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002144 struct dentry *dentry,
2145 int mode, dev_t dev)
2146{
2147 return 0;
2148}
2149
Eric Paris7b41b172008-04-23 14:10:25 -04002150static inline int security_inode_rename(struct inode *old_dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002151 struct dentry *old_dentry,
2152 struct inode *new_dir,
2153 struct dentry *new_dentry)
2154{
2155 return 0;
2156}
2157
Eric Paris7b41b172008-04-23 14:10:25 -04002158static inline int security_inode_readlink(struct dentry *dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002159{
2160 return 0;
2161}
2162
Eric Paris7b41b172008-04-23 14:10:25 -04002163static inline int security_inode_follow_link(struct dentry *dentry,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002164 struct nameidata *nd)
2165{
2166 return 0;
2167}
2168
Al Virob77b0642008-07-17 09:37:02 -04002169static inline int security_inode_permission(struct inode *inode, int mask)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002170{
2171 return 0;
2172}
2173
Eric Paris7b41b172008-04-23 14:10:25 -04002174static inline int security_inode_setattr(struct dentry *dentry,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002175 struct iattr *attr)
2176{
2177 return 0;
2178}
2179
Eric Paris7b41b172008-04-23 14:10:25 -04002180static inline int security_inode_getattr(struct vfsmount *mnt,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002181 struct dentry *dentry)
2182{
2183 return 0;
2184}
2185
David Howells8f0cfa52008-04-29 00:59:41 -07002186static inline int security_inode_setxattr(struct dentry *dentry,
2187 const char *name, const void *value, size_t size, int flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002188{
2189 return cap_inode_setxattr(dentry, name, value, size, flags);
2190}
2191
David Howells8f0cfa52008-04-29 00:59:41 -07002192static inline void security_inode_post_setxattr(struct dentry *dentry,
2193 const char *name, const void *value, size_t size, int flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002194{ }
2195
David Howells8f0cfa52008-04-29 00:59:41 -07002196static inline int security_inode_getxattr(struct dentry *dentry,
2197 const char *name)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002198{
2199 return 0;
2200}
2201
Eric Paris7b41b172008-04-23 14:10:25 -04002202static inline int security_inode_listxattr(struct dentry *dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002203{
2204 return 0;
2205}
2206
David Howells8f0cfa52008-04-29 00:59:41 -07002207static inline int security_inode_removexattr(struct dentry *dentry,
2208 const char *name)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002209{
2210 return cap_inode_removexattr(dentry, name);
2211}
2212
Serge E. Hallynb5376772007-10-16 23:31:36 -07002213static inline int security_inode_need_killpriv(struct dentry *dentry)
2214{
2215 return cap_inode_need_killpriv(dentry);
2216}
2217
2218static inline int security_inode_killpriv(struct dentry *dentry)
2219{
2220 return cap_inode_killpriv(dentry);
2221}
2222
David P. Quigley42492592008-02-04 22:29:39 -08002223static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002224{
2225 return -EOPNOTSUPP;
2226}
2227
2228static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
2229{
2230 return -EOPNOTSUPP;
2231}
2232
2233static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
2234{
2235 return 0;
2236}
2237
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02002238static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
2239{
2240 *secid = 0;
2241}
2242
Eric Paris7b41b172008-04-23 14:10:25 -04002243static inline int security_file_permission(struct file *file, int mask)
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_alloc(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 void security_file_free(struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002254{ }
2255
Eric Paris7b41b172008-04-23 14:10:25 -04002256static inline int security_file_ioctl(struct file *file, unsigned int cmd,
2257 unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002258{
2259 return 0;
2260}
2261
Al Viro8b3ec682012-05-30 17:11:23 -04002262static inline int security_mmap_file(struct file *file, unsigned long prot,
Al Viroe5467852012-05-30 13:30:51 -04002263 unsigned long flags)
2264{
2265 return 0;
2266}
2267
2268static inline int security_mmap_addr(unsigned long addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002269{
Al Virod0077942012-05-30 13:11:37 -04002270 return cap_mmap_addr(addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002271}
2272
Eric Paris7b41b172008-04-23 14:10:25 -04002273static inline int security_file_mprotect(struct vm_area_struct *vma,
2274 unsigned long reqprot,
2275 unsigned long prot)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002276{
2277 return 0;
2278}
2279
Eric Paris7b41b172008-04-23 14:10:25 -04002280static inline int security_file_lock(struct file *file, unsigned int cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002281{
2282 return 0;
2283}
2284
Eric Paris7b41b172008-04-23 14:10:25 -04002285static inline int security_file_fcntl(struct file *file, unsigned int cmd,
2286 unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002287{
2288 return 0;
2289}
2290
Eric Paris7b41b172008-04-23 14:10:25 -04002291static inline int security_file_set_fowner(struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002292{
2293 return 0;
2294}
2295
Eric Paris7b41b172008-04-23 14:10:25 -04002296static inline int security_file_send_sigiotask(struct task_struct *tsk,
2297 struct fown_struct *fown,
2298 int sig)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002299{
2300 return 0;
2301}
2302
Eric Paris7b41b172008-04-23 14:10:25 -04002303static inline int security_file_receive(struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002304{
2305 return 0;
2306}
2307
Eric Paris83d49852012-04-04 13:45:40 -04002308static inline int security_file_open(struct file *file,
2309 const struct cred *cred)
Yuichi Nakamura788e7dd2007-09-14 09:27:07 +09002310{
2311 return 0;
2312}
2313
Eric Paris7b41b172008-04-23 14:10:25 -04002314static inline int security_task_create(unsigned long clone_flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002315{
2316 return 0;
2317}
2318
Kees Cook1a2a4d02011-12-21 12:17:03 -08002319static inline void security_task_free(struct task_struct *task)
2320{ }
2321
David Howells945af7c2009-09-04 09:19:48 +01002322static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
2323{
2324 return 0;
2325}
David Howellsee18d642009-09-02 09:14:21 +01002326
David Howellsd84f4f92008-11-14 10:39:23 +11002327static inline void security_cred_free(struct cred *cred)
2328{ }
2329
2330static inline int security_prepare_creds(struct cred *new,
2331 const struct cred *old,
2332 gfp_t gfp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002333{
2334 return 0;
2335}
2336
David Howellsee18d642009-09-02 09:14:21 +01002337static inline void security_transfer_creds(struct cred *new,
2338 const struct cred *old)
2339{
2340}
2341
David Howells3a3b7ce2008-11-14 10:39:28 +11002342static inline int security_kernel_act_as(struct cred *cred, u32 secid)
2343{
2344 return 0;
2345}
2346
2347static inline int security_kernel_create_files_as(struct cred *cred,
2348 struct inode *inode)
2349{
2350 return 0;
2351}
2352
Eric Parisdd8dbf22009-11-03 16:35:32 +11002353static inline int security_kernel_module_request(char *kmod_name)
Eric Paris91884992009-08-13 09:44:57 -04002354{
2355 return 0;
2356}
2357
Kees Cook2e72d512012-10-16 07:32:07 +10302358static inline int security_kernel_module_from_file(struct file *file)
2359{
2360 return 0;
2361}
2362
David Howellsd84f4f92008-11-14 10:39:23 +11002363static inline int security_task_fix_setuid(struct cred *new,
2364 const struct cred *old,
2365 int flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002366{
David Howellsd84f4f92008-11-14 10:39:23 +11002367 return cap_task_fix_setuid(new, old, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002368}
2369
Eric Paris7b41b172008-04-23 14:10:25 -04002370static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002371{
2372 return 0;
2373}
2374
Eric Paris7b41b172008-04-23 14:10:25 -04002375static inline int security_task_getpgid(struct task_struct *p)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002376{
2377 return 0;
2378}
2379
Eric Paris7b41b172008-04-23 14:10:25 -04002380static inline int security_task_getsid(struct task_struct *p)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002381{
2382 return 0;
2383}
2384
Eric Paris7b41b172008-04-23 14:10:25 -04002385static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02002386{
2387 *secid = 0;
2388}
David Quigleyf9008e42006-06-30 01:55:46 -07002389
Eric Paris7b41b172008-04-23 14:10:25 -04002390static inline int security_task_setnice(struct task_struct *p, int nice)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002391{
Serge E. Hallynb5376772007-10-16 23:31:36 -07002392 return cap_task_setnice(p, nice);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002393}
2394
Eric Paris7b41b172008-04-23 14:10:25 -04002395static inline int security_task_setioprio(struct task_struct *p, int ioprio)
James Morris03e68062006-06-23 02:03:58 -07002396{
Serge E. Hallynb5376772007-10-16 23:31:36 -07002397 return cap_task_setioprio(p, ioprio);
James Morris03e68062006-06-23 02:03:58 -07002398}
2399
Eric Paris7b41b172008-04-23 14:10:25 -04002400static inline int security_task_getioprio(struct task_struct *p)
David Quigleya1836a42006-06-30 01:55:49 -07002401{
2402 return 0;
2403}
2404
Jiri Slaby8fd00b42009-08-26 18:41:16 +02002405static inline int security_task_setrlimit(struct task_struct *p,
2406 unsigned int resource,
Eric Paris7b41b172008-04-23 14:10:25 -04002407 struct rlimit *new_rlim)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002408{
2409 return 0;
2410}
2411
KOSAKI Motohirob0ae1982010-10-15 04:21:18 +09002412static inline int security_task_setscheduler(struct task_struct *p)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002413{
KOSAKI Motohirob0ae1982010-10-15 04:21:18 +09002414 return cap_task_setscheduler(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002415}
2416
Eric Paris7b41b172008-04-23 14:10:25 -04002417static inline int security_task_getscheduler(struct task_struct *p)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002418{
2419 return 0;
2420}
2421
Eric Paris7b41b172008-04-23 14:10:25 -04002422static inline int security_task_movememory(struct task_struct *p)
David Quigley35601542006-06-23 02:04:01 -07002423{
2424 return 0;
2425}
2426
Eric Paris7b41b172008-04-23 14:10:25 -04002427static inline int security_task_kill(struct task_struct *p,
2428 struct siginfo *info, int sig,
2429 u32 secid)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002430{
Serge Hallynaedb60a2008-02-29 15:14:57 +00002431 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002432}
2433
Eric Paris7b41b172008-04-23 14:10:25 -04002434static inline int security_task_wait(struct task_struct *p)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002435{
2436 return 0;
2437}
2438
Eric Paris7b41b172008-04-23 14:10:25 -04002439static inline int security_task_prctl(int option, unsigned long arg2,
2440 unsigned long arg3,
2441 unsigned long arg4,
David Howellsd84f4f92008-11-14 10:39:23 +11002442 unsigned long arg5)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002443{
David Howellsd84f4f92008-11-14 10:39:23 +11002444 return cap_task_prctl(option, arg2, arg3, arg3, arg5);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002445}
2446
2447static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
2448{ }
2449
Eric Paris7b41b172008-04-23 14:10:25 -04002450static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
2451 short flag)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002452{
2453 return 0;
2454}
2455
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02002456static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
2457{
2458 *secid = 0;
2459}
2460
Eric Paris7b41b172008-04-23 14:10:25 -04002461static inline int security_msg_msg_alloc(struct msg_msg *msg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002462{
2463 return 0;
2464}
2465
Eric Paris7b41b172008-04-23 14:10:25 -04002466static inline void security_msg_msg_free(struct msg_msg *msg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002467{ }
2468
Eric Paris7b41b172008-04-23 14:10:25 -04002469static inline int security_msg_queue_alloc(struct msg_queue *msq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002470{
2471 return 0;
2472}
2473
Eric Paris7b41b172008-04-23 14:10:25 -04002474static inline void security_msg_queue_free(struct msg_queue *msq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002475{ }
2476
Eric Paris7b41b172008-04-23 14:10:25 -04002477static inline int security_msg_queue_associate(struct msg_queue *msq,
2478 int msqflg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002479{
2480 return 0;
2481}
2482
Eric Paris7b41b172008-04-23 14:10:25 -04002483static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002484{
2485 return 0;
2486}
2487
Eric Paris7b41b172008-04-23 14:10:25 -04002488static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
2489 struct msg_msg *msg, int msqflg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002490{
2491 return 0;
2492}
2493
Eric Paris7b41b172008-04-23 14:10:25 -04002494static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
2495 struct msg_msg *msg,
2496 struct task_struct *target,
2497 long type, int mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002498{
2499 return 0;
2500}
2501
Eric Paris7b41b172008-04-23 14:10:25 -04002502static inline int security_shm_alloc(struct shmid_kernel *shp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002503{
2504 return 0;
2505}
2506
Eric Paris7b41b172008-04-23 14:10:25 -04002507static inline void security_shm_free(struct shmid_kernel *shp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002508{ }
2509
Eric Paris7b41b172008-04-23 14:10:25 -04002510static inline int security_shm_associate(struct shmid_kernel *shp,
2511 int shmflg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002512{
2513 return 0;
2514}
2515
Eric Paris7b41b172008-04-23 14:10:25 -04002516static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002517{
2518 return 0;
2519}
2520
Eric Paris7b41b172008-04-23 14:10:25 -04002521static inline int security_shm_shmat(struct shmid_kernel *shp,
2522 char __user *shmaddr, int shmflg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002523{
2524 return 0;
2525}
2526
Eric Paris7b41b172008-04-23 14:10:25 -04002527static inline int security_sem_alloc(struct sem_array *sma)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002528{
2529 return 0;
2530}
2531
Eric Paris7b41b172008-04-23 14:10:25 -04002532static inline void security_sem_free(struct sem_array *sma)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002533{ }
2534
Eric Paris7b41b172008-04-23 14:10:25 -04002535static inline int security_sem_associate(struct sem_array *sma, int semflg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002536{
2537 return 0;
2538}
2539
Eric Paris7b41b172008-04-23 14:10:25 -04002540static inline int security_sem_semctl(struct sem_array *sma, int cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002541{
2542 return 0;
2543}
2544
Eric Paris7b41b172008-04-23 14:10:25 -04002545static inline int security_sem_semop(struct sem_array *sma,
2546 struct sembuf *sops, unsigned nsops,
2547 int alter)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002548{
2549 return 0;
2550}
2551
Eric Paris7b41b172008-04-23 14:10:25 -04002552static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002553{ }
2554
Al Viro04ff9702007-03-12 16:17:58 +00002555static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002556{
2557 return -EINVAL;
2558}
2559
2560static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2561{
2562 return -EINVAL;
2563}
2564
Eric Paris7b41b172008-04-23 14:10:25 -04002565static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002566{
Eric Paris7b41b172008-04-23 14:10:25 -04002567 return cap_netlink_send(sk, skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002568}
2569
David Quigley746df9b2013-05-22 12:50:35 -04002570static inline int security_ismaclabel(const char *name)
2571{
2572 return 0;
2573}
2574
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07002575static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2576{
2577 return -EOPNOTSUPP;
2578}
2579
David Howells7bf570d2008-04-29 20:52:51 +01002580static inline int security_secctx_to_secid(const char *secdata,
David Howells63cb3442008-01-15 23:47:35 +00002581 u32 seclen,
2582 u32 *secid)
2583{
2584 return -EOPNOTSUPP;
2585}
2586
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07002587static inline void security_release_secctx(char *secdata, u32 seclen)
2588{
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07002589}
David P. Quigley1ee65e32009-09-03 14:25:57 -04002590
2591static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
2592{
2593 return -EOPNOTSUPP;
2594}
2595static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
2596{
2597 return -EOPNOTSUPP;
2598}
2599static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
2600{
2601 return -EOPNOTSUPP;
2602}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002603#endif /* CONFIG_SECURITY */
2604
2605#ifdef CONFIG_SECURITY_NETWORK
Linus Torvalds1da177e2005-04-16 15:20:36 -07002606
David S. Miller3610cda2011-01-05 15:38:53 -08002607int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
James Morris20510f22007-10-16 23:31:32 -07002608int security_unix_may_send(struct socket *sock, struct socket *other);
2609int security_socket_create(int family, int type, int protocol, int kern);
2610int security_socket_post_create(struct socket *sock, int family,
2611 int type, int protocol, int kern);
2612int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
2613int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
2614int security_socket_listen(struct socket *sock, int backlog);
2615int security_socket_accept(struct socket *sock, struct socket *newsock);
James Morris20510f22007-10-16 23:31:32 -07002616int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
2617int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2618 int size, int flags);
2619int security_socket_getsockname(struct socket *sock);
2620int security_socket_getpeername(struct socket *sock);
2621int security_socket_getsockopt(struct socket *sock, int level, int optname);
2622int security_socket_setsockopt(struct socket *sock, int level, int optname);
2623int security_socket_shutdown(struct socket *sock, int how);
2624int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
2625int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2626 int __user *optlen, unsigned len);
2627int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
2628int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
2629void security_sk_free(struct sock *sk);
2630void security_sk_clone(const struct sock *sk, struct sock *newsk);
2631void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
2632void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
2633void security_sock_graft(struct sock*sk, struct socket *parent);
2634int security_inet_conn_request(struct sock *sk,
2635 struct sk_buff *skb, struct request_sock *req);
2636void security_inet_csk_clone(struct sock *newsk,
2637 const struct request_sock *req);
2638void security_inet_conn_established(struct sock *sk,
2639 struct sk_buff *skb);
Eric Paris2606fd12010-10-13 16:24:41 -04002640int security_secmark_relabel_packet(u32 secid);
2641void security_secmark_refcount_inc(void);
2642void security_secmark_refcount_dec(void);
Paul Moore5dbbaf22013-01-14 07:12:19 +00002643int security_tun_dev_alloc_security(void **security);
2644void security_tun_dev_free_security(void *security);
Paul Moore2b980db2009-08-28 18:12:43 -04002645int security_tun_dev_create(void);
Paul Moore5dbbaf22013-01-14 07:12:19 +00002646int security_tun_dev_attach_queue(void *security);
2647int security_tun_dev_attach(struct sock *sk, void *security);
2648int security_tun_dev_open(void *security);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002649
Eric Dumazetca10b9e2013-04-08 17:58:11 +00002650void security_skb_owned_by(struct sk_buff *skb, struct sock *sk);
2651
Linus Torvalds1da177e2005-04-16 15:20:36 -07002652#else /* CONFIG_SECURITY_NETWORK */
David S. Miller3610cda2011-01-05 15:38:53 -08002653static inline int security_unix_stream_connect(struct sock *sock,
2654 struct sock *other,
Eric Paris7b41b172008-04-23 14:10:25 -04002655 struct sock *newsk)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002656{
2657 return 0;
2658}
2659
Eric Paris7b41b172008-04-23 14:10:25 -04002660static inline int security_unix_may_send(struct socket *sock,
2661 struct socket *other)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002662{
2663 return 0;
2664}
2665
Eric Paris7b41b172008-04-23 14:10:25 -04002666static inline int security_socket_create(int family, int type,
2667 int protocol, int kern)
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_post_create(struct socket *sock,
Venkat Yekkirala7420ed22006-08-04 23:17:57 -07002673 int family,
2674 int type,
2675 int protocol, int kern)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002676{
Venkat Yekkirala7420ed22006-08-04 23:17:57 -07002677 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002678}
2679
Eric Paris7b41b172008-04-23 14:10:25 -04002680static inline int security_socket_bind(struct socket *sock,
2681 struct sockaddr *address,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002682 int addrlen)
2683{
2684 return 0;
2685}
2686
Eric Paris7b41b172008-04-23 14:10:25 -04002687static inline int security_socket_connect(struct socket *sock,
2688 struct sockaddr *address,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002689 int addrlen)
2690{
2691 return 0;
2692}
2693
Eric Paris7b41b172008-04-23 14:10:25 -04002694static inline int security_socket_listen(struct socket *sock, int backlog)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002695{
2696 return 0;
2697}
2698
Eric Paris7b41b172008-04-23 14:10:25 -04002699static inline int security_socket_accept(struct socket *sock,
2700 struct socket *newsock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002701{
2702 return 0;
2703}
2704
Eric Paris7b41b172008-04-23 14:10:25 -04002705static inline int security_socket_sendmsg(struct socket *sock,
2706 struct msghdr *msg, int size)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002707{
2708 return 0;
2709}
2710
Eric Paris7b41b172008-04-23 14:10:25 -04002711static inline int security_socket_recvmsg(struct socket *sock,
2712 struct msghdr *msg, int size,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002713 int flags)
2714{
2715 return 0;
2716}
2717
Eric Paris7b41b172008-04-23 14:10:25 -04002718static inline int security_socket_getsockname(struct socket *sock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002719{
2720 return 0;
2721}
2722
Eric Paris7b41b172008-04-23 14:10:25 -04002723static inline int security_socket_getpeername(struct socket *sock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002724{
2725 return 0;
2726}
2727
Eric Paris7b41b172008-04-23 14:10:25 -04002728static inline int security_socket_getsockopt(struct socket *sock,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002729 int level, int optname)
2730{
2731 return 0;
2732}
2733
Eric Paris7b41b172008-04-23 14:10:25 -04002734static inline int security_socket_setsockopt(struct socket *sock,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002735 int level, int optname)
2736{
2737 return 0;
2738}
2739
Eric Paris7b41b172008-04-23 14:10:25 -04002740static inline int security_socket_shutdown(struct socket *sock, int how)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002741{
2742 return 0;
2743}
Eric Paris7b41b172008-04-23 14:10:25 -04002744static inline int security_sock_rcv_skb(struct sock *sk,
2745 struct sk_buff *skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002746{
2747 return 0;
2748}
2749
Catherine Zhang2c7946a2006-03-20 22:41:23 -08002750static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2751 int __user *optlen, unsigned len)
2752{
2753 return -ENOPROTOOPT;
2754}
2755
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07002756static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002757{
2758 return -ENOPROTOOPT;
2759}
2760
Al Virodd0fc662005-10-07 07:46:04 +01002761static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002762{
2763 return 0;
2764}
2765
2766static inline void security_sk_free(struct sock *sk)
2767{
2768}
Trent Jaegerdf718372005-12-13 23:12:27 -08002769
Venkat Yekkirala892c1412006-08-04 23:08:56 -07002770static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
2771{
2772}
2773
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07002774static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
Trent Jaegerdf718372005-12-13 23:12:27 -08002775{
Trent Jaegerdf718372005-12-13 23:12:27 -08002776}
Venkat Yekkirala4237c752006-07-24 23:32:50 -07002777
2778static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2779{
2780}
2781
Eric Paris7b41b172008-04-23 14:10:25 -04002782static inline void security_sock_graft(struct sock *sk, struct socket *parent)
Venkat Yekkirala4237c752006-07-24 23:32:50 -07002783{
2784}
2785
2786static inline int security_inet_conn_request(struct sock *sk,
2787 struct sk_buff *skb, struct request_sock *req)
2788{
2789 return 0;
2790}
2791
2792static inline void security_inet_csk_clone(struct sock *newsk,
2793 const struct request_sock *req)
2794{
2795}
Venkat Yekkirala6b877692006-11-08 17:04:09 -06002796
2797static inline void security_inet_conn_established(struct sock *sk,
2798 struct sk_buff *skb)
2799{
2800}
Paul Moore2b980db2009-08-28 18:12:43 -04002801
Eric Paris2606fd12010-10-13 16:24:41 -04002802static inline int security_secmark_relabel_packet(u32 secid)
2803{
2804 return 0;
2805}
2806
2807static inline void security_secmark_refcount_inc(void)
2808{
2809}
2810
2811static inline void security_secmark_refcount_dec(void)
2812{
2813}
2814
Paul Moore5dbbaf22013-01-14 07:12:19 +00002815static inline int security_tun_dev_alloc_security(void **security)
2816{
2817 return 0;
2818}
2819
2820static inline void security_tun_dev_free_security(void *security)
2821{
2822}
2823
Paul Moore2b980db2009-08-28 18:12:43 -04002824static inline int security_tun_dev_create(void)
2825{
2826 return 0;
2827}
2828
Paul Moore5dbbaf22013-01-14 07:12:19 +00002829static inline int security_tun_dev_attach_queue(void *security)
Paul Moore2b980db2009-08-28 18:12:43 -04002830{
Paul Moore5dbbaf22013-01-14 07:12:19 +00002831 return 0;
Paul Moore2b980db2009-08-28 18:12:43 -04002832}
2833
Paul Moore5dbbaf22013-01-14 07:12:19 +00002834static inline int security_tun_dev_attach(struct sock *sk, void *security)
2835{
2836 return 0;
2837}
2838
2839static inline int security_tun_dev_open(void *security)
Paul Moore2b980db2009-08-28 18:12:43 -04002840{
2841 return 0;
2842}
Eric Dumazetca10b9e2013-04-08 17:58:11 +00002843
2844static inline void security_skb_owned_by(struct sk_buff *skb, struct sock *sk)
2845{
2846}
2847
Linus Torvalds1da177e2005-04-16 15:20:36 -07002848#endif /* CONFIG_SECURITY_NETWORK */
2849
Trent Jaegerdf718372005-12-13 23:12:27 -08002850#ifdef CONFIG_SECURITY_NETWORK_XFRM
Venkat Yekkiralacb969f02006-07-24 23:32:20 -07002851
Paul Moore03e1ad72008-04-12 19:07:52 -07002852int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx);
2853int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
2854void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
2855int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
James Morris20510f22007-10-16 23:31:32 -07002856int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
2857int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2858 struct xfrm_sec_ctx *polsec, u32 secid);
2859int security_xfrm_state_delete(struct xfrm_state *x);
2860void security_xfrm_state_free(struct xfrm_state *x);
Paul Moore03e1ad72008-04-12 19:07:52 -07002861int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
James Morris20510f22007-10-16 23:31:32 -07002862int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
David S. Millere33f7702011-02-22 18:13:15 -08002863 struct xfrm_policy *xp,
2864 const struct flowi *fl);
James Morris20510f22007-10-16 23:31:32 -07002865int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
2866void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
Trent Jaegerdf718372005-12-13 23:12:27 -08002867
Trent Jaegerdf718372005-12-13 23:12:27 -08002868#else /* CONFIG_SECURITY_NETWORK_XFRM */
James Morris20510f22007-10-16 23:31:32 -07002869
Paul Moore03e1ad72008-04-12 19:07:52 -07002870static 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 -08002871{
2872 return 0;
2873}
2874
Paul Moore03e1ad72008-04-12 19:07:52 -07002875static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
Trent Jaegerdf718372005-12-13 23:12:27 -08002876{
2877 return 0;
2878}
2879
Paul Moore03e1ad72008-04-12 19:07:52 -07002880static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
Trent Jaegerdf718372005-12-13 23:12:27 -08002881{
2882}
2883
Paul Moore03e1ad72008-04-12 19:07:52 -07002884static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
Catherine Zhangc8c05a82006-06-08 23:39:49 -07002885{
2886 return 0;
2887}
2888
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07002889static inline int security_xfrm_state_alloc(struct xfrm_state *x,
2890 struct xfrm_user_sec_ctx *sec_ctx)
2891{
2892 return 0;
2893}
2894
2895static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2896 struct xfrm_sec_ctx *polsec, u32 secid)
Trent Jaegerdf718372005-12-13 23:12:27 -08002897{
2898 return 0;
2899}
2900
2901static inline void security_xfrm_state_free(struct xfrm_state *x)
2902{
2903}
2904
David S. Miller6f68dc32006-06-08 23:58:52 -07002905static inline int security_xfrm_state_delete(struct xfrm_state *x)
Catherine Zhangc8c05a82006-06-08 23:39:49 -07002906{
2907 return 0;
2908}
2909
Paul Moore03e1ad72008-04-12 19:07:52 -07002910static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
Trent Jaegerdf718372005-12-13 23:12:27 -08002911{
2912 return 0;
2913}
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07002914
2915static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
David S. Millere33f7702011-02-22 18:13:15 -08002916 struct xfrm_policy *xp, const struct flowi *fl)
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07002917{
2918 return 1;
2919}
2920
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07002921static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07002922{
2923 return 0;
2924}
2925
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07002926static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2927{
2928}
2929
Trent Jaegerdf718372005-12-13 23:12:27 -08002930#endif /* CONFIG_SECURITY_NETWORK_XFRM */
2931
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09002932#ifdef CONFIG_SECURITY_PATH
2933int security_path_unlink(struct path *dir, struct dentry *dentry);
Al Viro4572bef2011-11-21 14:56:21 -05002934int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode);
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09002935int security_path_rmdir(struct path *dir, struct dentry *dentry);
Al Viro04fc66e2011-11-21 14:58:38 -05002936int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode,
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09002937 unsigned int dev);
Tetsuo Handaea0d3ab2010-06-02 13:24:43 +09002938int security_path_truncate(struct path *path);
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09002939int security_path_symlink(struct path *dir, struct dentry *dentry,
2940 const char *old_name);
2941int security_path_link(struct dentry *old_dentry, struct path *new_dir,
2942 struct dentry *new_dentry);
2943int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
2944 struct path *new_dir, struct dentry *new_dentry);
Al Virocdcf1162011-12-08 10:51:53 -05002945int security_path_chmod(struct path *path, umode_t mode);
Eric W. Biedermand2b31ca2012-06-01 16:14:19 -06002946int security_path_chown(struct path *path, kuid_t uid, kgid_t gid);
Tetsuo Handa8b8efb42009-10-04 21:49:48 +09002947int security_path_chroot(struct path *path);
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09002948#else /* CONFIG_SECURITY_PATH */
2949static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
2950{
2951 return 0;
2952}
2953
2954static inline int security_path_mkdir(struct path *dir, struct dentry *dentry,
Al Viro4572bef2011-11-21 14:56:21 -05002955 umode_t mode)
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09002956{
2957 return 0;
2958}
2959
2960static inline int security_path_rmdir(struct path *dir, struct dentry *dentry)
2961{
2962 return 0;
2963}
2964
2965static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
Al Viro04fc66e2011-11-21 14:58:38 -05002966 umode_t mode, unsigned int dev)
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09002967{
2968 return 0;
2969}
2970
Tetsuo Handaea0d3ab2010-06-02 13:24:43 +09002971static inline int security_path_truncate(struct path *path)
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09002972{
2973 return 0;
2974}
2975
2976static inline int security_path_symlink(struct path *dir, struct dentry *dentry,
2977 const char *old_name)
2978{
2979 return 0;
2980}
2981
2982static inline int security_path_link(struct dentry *old_dentry,
2983 struct path *new_dir,
2984 struct dentry *new_dentry)
2985{
2986 return 0;
2987}
2988
2989static inline int security_path_rename(struct path *old_dir,
2990 struct dentry *old_dentry,
2991 struct path *new_dir,
2992 struct dentry *new_dentry)
2993{
2994 return 0;
2995}
Tetsuo Handa89eda062009-10-04 21:49:47 +09002996
Al Virocdcf1162011-12-08 10:51:53 -05002997static inline int security_path_chmod(struct path *path, umode_t mode)
Tetsuo Handa89eda062009-10-04 21:49:47 +09002998{
2999 return 0;
3000}
3001
Eric W. Biedermand2b31ca2012-06-01 16:14:19 -06003002static inline int security_path_chown(struct path *path, kuid_t uid, kgid_t gid)
Tetsuo Handa89eda062009-10-04 21:49:47 +09003003{
3004 return 0;
3005}
Tetsuo Handa8b8efb42009-10-04 21:49:48 +09003006
3007static inline int security_path_chroot(struct path *path)
3008{
3009 return 0;
3010}
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09003011#endif /* CONFIG_SECURITY_PATH */
3012
David Howells29db9192005-10-30 15:02:44 -08003013#ifdef CONFIG_KEYS
3014#ifdef CONFIG_SECURITY
David Howells29db9192005-10-30 15:02:44 -08003015
David Howellsd84f4f92008-11-14 10:39:23 +11003016int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
James Morris20510f22007-10-16 23:31:32 -07003017void security_key_free(struct key *key);
3018int security_key_permission(key_ref_t key_ref,
David Howellsd84f4f92008-11-14 10:39:23 +11003019 const struct cred *cred, key_perm_t perm);
David Howells70a5bb72008-04-29 01:01:26 -07003020int security_key_getsecurity(struct key *key, char **_buffer);
David Howells29db9192005-10-30 15:02:44 -08003021
3022#else
3023
Michael LeMayd7200242006-06-22 14:47:17 -07003024static inline int security_key_alloc(struct key *key,
David Howellsd84f4f92008-11-14 10:39:23 +11003025 const struct cred *cred,
David Howells7e047ef2006-06-26 00:24:50 -07003026 unsigned long flags)
David Howells29db9192005-10-30 15:02:44 -08003027{
3028 return 0;
3029}
3030
3031static inline void security_key_free(struct key *key)
3032{
3033}
3034
3035static inline int security_key_permission(key_ref_t key_ref,
David Howellsd84f4f92008-11-14 10:39:23 +11003036 const struct cred *cred,
David Howells29db9192005-10-30 15:02:44 -08003037 key_perm_t perm)
3038{
3039 return 0;
3040}
3041
David Howells70a5bb72008-04-29 01:01:26 -07003042static inline int security_key_getsecurity(struct key *key, char **_buffer)
3043{
3044 *_buffer = NULL;
3045 return 0;
3046}
3047
David Howells29db9192005-10-30 15:02:44 -08003048#endif
3049#endif /* CONFIG_KEYS */
3050
Ahmed S. Darwish03d37d22008-03-01 22:00:05 +02003051#ifdef CONFIG_AUDIT
3052#ifdef CONFIG_SECURITY
3053int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
3054int security_audit_rule_known(struct audit_krule *krule);
3055int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
3056 struct audit_context *actx);
3057void security_audit_rule_free(void *lsmrule);
3058
3059#else
3060
3061static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
3062 void **lsmrule)
3063{
3064 return 0;
3065}
3066
3067static inline int security_audit_rule_known(struct audit_krule *krule)
3068{
3069 return 0;
3070}
3071
3072static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
3073 void *lsmrule, struct audit_context *actx)
3074{
3075 return 0;
3076}
3077
3078static inline void security_audit_rule_free(void *lsmrule)
3079{ }
3080
3081#endif /* CONFIG_SECURITY */
3082#endif /* CONFIG_AUDIT */
3083
Eric Parisda318942008-08-22 11:35:57 -04003084#ifdef CONFIG_SECURITYFS
3085
Al Viro52ef0c02011-07-26 04:30:04 -04003086extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
Eric Parisda318942008-08-22 11:35:57 -04003087 struct dentry *parent, void *data,
3088 const struct file_operations *fops);
3089extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
3090extern void securityfs_remove(struct dentry *dentry);
3091
3092#else /* CONFIG_SECURITYFS */
3093
3094static inline struct dentry *securityfs_create_dir(const char *name,
3095 struct dentry *parent)
3096{
3097 return ERR_PTR(-ENODEV);
3098}
3099
3100static inline struct dentry *securityfs_create_file(const char *name,
Al Viro52ef0c02011-07-26 04:30:04 -04003101 umode_t mode,
Eric Parisda318942008-08-22 11:35:57 -04003102 struct dentry *parent,
3103 void *data,
3104 const struct file_operations *fops)
3105{
3106 return ERR_PTR(-ENODEV);
3107}
3108
3109static inline void securityfs_remove(struct dentry *dentry)
3110{}
3111
3112#endif
3113
Pekka Enberg3d544f42009-03-24 11:59:23 +02003114#ifdef CONFIG_SECURITY
3115
3116static inline char *alloc_secdata(void)
3117{
3118 return (char *)get_zeroed_page(GFP_KERNEL);
3119}
3120
3121static inline void free_secdata(void *secdata)
3122{
3123 free_page((unsigned long)secdata);
3124}
3125
3126#else
3127
3128static inline char *alloc_secdata(void)
3129{
3130 return (char *)1;
3131}
3132
3133static inline void free_secdata(void *secdata)
3134{ }
3135#endif /* CONFIG_SECURITY */
3136
Kees Cookc6993e42012-09-04 13:32:13 -07003137#ifdef CONFIG_SECURITY_YAMA
3138extern int yama_ptrace_access_check(struct task_struct *child,
3139 unsigned int mode);
3140extern int yama_ptrace_traceme(struct task_struct *parent);
3141extern void yama_task_free(struct task_struct *task);
3142extern int yama_task_prctl(int option, unsigned long arg2, unsigned long arg3,
3143 unsigned long arg4, unsigned long arg5);
3144#else
3145static inline int yama_ptrace_access_check(struct task_struct *child,
3146 unsigned int mode)
3147{
3148 return 0;
3149}
3150
3151static inline int yama_ptrace_traceme(struct task_struct *parent)
3152{
3153 return 0;
3154}
3155
3156static inline void yama_task_free(struct task_struct *task)
3157{
3158}
3159
3160static inline int yama_task_prctl(int option, unsigned long arg2,
3161 unsigned long arg3, unsigned long arg4,
3162 unsigned long arg5)
3163{
3164 return -ENOSYS;
3165}
3166#endif /* CONFIG_SECURITY_YAMA */
3167
Linus Torvalds1da177e2005-04-16 15:20:36 -07003168#endif /* ! __LINUX_SECURITY_H */
3169