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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)
Nikolay Aleksandrov52a4c642014-03-07 12:44:19 +01001043 * @gfp is to specify the context for the allocation
Trent Jaegerdf718372005-12-13 23:12:27 -08001044 * @xfrm_policy_clone_security:
Paul Moore03e1ad72008-04-12 19:07:52 -07001045 * @old_ctx contains an existing xfrm_sec_ctx.
1046 * @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
1047 * Allocate a security structure in new_ctxp that contains the
1048 * information from the old_ctx structure.
Trent Jaegerdf718372005-12-13 23:12:27 -08001049 * Return 0 if operation was successful (memory to allocate).
1050 * @xfrm_policy_free_security:
Paul Moore03e1ad72008-04-12 19:07:52 -07001051 * @ctx contains the xfrm_sec_ctx
Catherine Zhangc8c05a82006-06-08 23:39:49 -07001052 * Deallocate xp->security.
1053 * @xfrm_policy_delete_security:
Paul Moore03e1ad72008-04-12 19:07:52 -07001054 * @ctx contains the xfrm_sec_ctx.
Catherine Zhangc8c05a82006-06-08 23:39:49 -07001055 * Authorize deletion of xp->security.
Paul Moore2e5aa862013-07-23 17:38:38 -04001056 * @xfrm_state_alloc:
Trent Jaegerdf718372005-12-13 23:12:27 -08001057 * @x contains the xfrm_state being added to the Security Association
1058 * Database by the XFRM system.
1059 * @sec_ctx contains the security context information being provided by
1060 * the user-level SA generation program (e.g., setkey or racoon).
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001061 * 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
Paul Moore2e5aa862013-07-23 17:38:38 -04001063 * context to correspond to sec_ctx. Return 0 if operation was successful
1064 * (memory to allocate, legal context).
1065 * @xfrm_state_alloc_acquire:
1066 * @x contains the xfrm_state being added to the Security Association
1067 * Database by the XFRM system.
1068 * @polsec contains the policy's security context.
1069 * @secid contains the secid from which to take the mls portion of the
1070 * context.
1071 * Allocate a security structure to the x->security field; the security
1072 * field is initialized to NULL when the xfrm_state is allocated. Set the
1073 * context to correspond to secid. Return 0 if operation was successful
1074 * (memory to allocate, legal context).
Trent Jaegerdf718372005-12-13 23:12:27 -08001075 * @xfrm_state_free_security:
1076 * @x contains the xfrm_state.
Catherine Zhangc8c05a82006-06-08 23:39:49 -07001077 * Deallocate x->security.
1078 * @xfrm_state_delete_security:
1079 * @x contains the xfrm_state.
1080 * Authorize deletion of x->security.
Trent Jaegerdf718372005-12-13 23:12:27 -08001081 * @xfrm_policy_lookup:
Paul Moore03e1ad72008-04-12 19:07:52 -07001082 * @ctx contains the xfrm_sec_ctx for which the access control is being
Trent Jaegerdf718372005-12-13 23:12:27 -08001083 * checked.
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001084 * @fl_secid contains the flow security label that is used to authorize
Trent Jaegerdf718372005-12-13 23:12:27 -08001085 * access to the policy xp.
1086 * @dir contains the direction of the flow (input or output).
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001087 * Check permission when a flow selects a xfrm_policy for processing
Trent Jaegerdf718372005-12-13 23:12:27 -08001088 * XFRMs on a packet. The hook is called when selecting either a
1089 * per-socket policy or a generic xfrm policy.
Venkat Yekkirala5b368e62006-10-05 15:42:18 -05001090 * Return 0 if permission is granted, -ESRCH otherwise, or -errno
1091 * on other errors.
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001092 * @xfrm_state_pol_flow_match:
1093 * @x contains the state to match.
1094 * @xp contains the policy to check for a match.
1095 * @fl contains the flow to check for a match.
1096 * Return 1 if there is a match.
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001097 * @xfrm_decode_session:
1098 * @skb points to skb to decode.
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07001099 * @secid points to the flow key secid to set.
1100 * @ckall says if all xfrms used should be checked for same secid.
1101 * Return 0 if ckall is zero or all xfrms used have the same secid.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001102 *
David Howells29db9192005-10-30 15:02:44 -08001103 * Security hooks affecting all Key Management operations
1104 *
1105 * @key_alloc:
1106 * Permit allocation of a key and assign security data. Note that key does
1107 * not have a serial number assigned at this point.
1108 * @key points to the key.
David Howells7e047ef2006-06-26 00:24:50 -07001109 * @flags is the allocation flags
David Howells29db9192005-10-30 15:02:44 -08001110 * Return 0 if permission is granted, -ve error otherwise.
1111 * @key_free:
1112 * Notification of destruction; free security data.
1113 * @key points to the key.
1114 * No return value.
1115 * @key_permission:
1116 * See whether a specific operational right is granted to a process on a
Eric Paris7b41b172008-04-23 14:10:25 -04001117 * key.
David Howells29db9192005-10-30 15:02:44 -08001118 * @key_ref refers to the key (key pointer + possession attribute bit).
David Howellsd84f4f92008-11-14 10:39:23 +11001119 * @cred points to the credentials to provide the context against which to
Eric Paris7b41b172008-04-23 14:10:25 -04001120 * evaluate the security data on the key.
David Howells29db9192005-10-30 15:02:44 -08001121 * @perm describes the combination of permissions required of this key.
Tetsuo Handaad9c2b02010-11-30 11:06:47 +09001122 * Return 0 if permission is granted, -ve error otherwise.
David Howells70a5bb72008-04-29 01:01:26 -07001123 * @key_getsecurity:
1124 * Get a textual representation of the security context attached to a key
1125 * for the purposes of honouring KEYCTL_GETSECURITY. This function
1126 * allocates the storage for the NUL-terminated string and the caller
1127 * should free it.
1128 * @key points to the key to be queried.
1129 * @_buffer points to a pointer that should be set to point to the
Vsevolod Alekseev11be0b32011-11-05 02:35:28 -07001130 * resulting string (if no label or an error occurs).
David Howells70a5bb72008-04-29 01:01:26 -07001131 * Return the length of the string (including terminating NUL) or -ve if
Vsevolod Alekseev11be0b32011-11-05 02:35:28 -07001132 * an error.
David Howells70a5bb72008-04-29 01:01:26 -07001133 * May also return 0 (and a NULL buffer pointer) if there is no label.
David Howells29db9192005-10-30 15:02:44 -08001134 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07001135 * Security hooks affecting all System V IPC operations.
1136 *
1137 * @ipc_permission:
1138 * Check permissions for access to IPC
1139 * @ipcp contains the kernel IPC permission structure
1140 * @flag contains the desired (requested) permission set
1141 * Return 0 if permission is granted.
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02001142 * @ipc_getsecid:
1143 * Get the secid associated with the ipc object.
1144 * @ipcp contains the kernel IPC permission structure.
1145 * @secid contains a pointer to the location where result will be saved.
1146 * In case of failure, @secid will be set to zero.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001147 *
1148 * Security hooks for individual messages held in System V IPC message queues
1149 * @msg_msg_alloc_security:
1150 * Allocate and attach a security structure to the msg->security field.
1151 * The security field is initialized to NULL when the structure is first
1152 * created.
1153 * @msg contains the message structure to be modified.
1154 * Return 0 if operation was successful and permission is granted.
1155 * @msg_msg_free_security:
1156 * Deallocate the security structure for this message.
1157 * @msg contains the message structure to be modified.
1158 *
1159 * Security hooks for System V IPC Message Queues
1160 *
1161 * @msg_queue_alloc_security:
1162 * Allocate and attach a security structure to the
1163 * msq->q_perm.security field. The security field is initialized to
1164 * NULL when the structure is first created.
1165 * @msq contains the message queue structure to be modified.
1166 * Return 0 if operation was successful and permission is granted.
1167 * @msg_queue_free_security:
1168 * Deallocate security structure for this message queue.
1169 * @msq contains the message queue structure to be modified.
1170 * @msg_queue_associate:
1171 * Check permission when a message queue is requested through the
1172 * msgget system call. This hook is only called when returning the
1173 * message queue identifier for an existing message queue, not when a
1174 * new message queue is created.
1175 * @msq contains the message queue to act upon.
1176 * @msqflg contains the operation control flags.
1177 * Return 0 if permission is granted.
1178 * @msg_queue_msgctl:
1179 * Check permission when a message control operation specified by @cmd
1180 * is to be performed on the message queue @msq.
1181 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
1182 * @msq contains the message queue to act upon. May be NULL.
1183 * @cmd contains the operation to be performed.
Eric Paris7b41b172008-04-23 14:10:25 -04001184 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001185 * @msg_queue_msgsnd:
1186 * Check permission before a message, @msg, is enqueued on the message
1187 * queue, @msq.
1188 * @msq contains the message queue to send message to.
1189 * @msg contains the message to be enqueued.
1190 * @msqflg contains operational flags.
1191 * Return 0 if permission is granted.
1192 * @msg_queue_msgrcv:
1193 * Check permission before a message, @msg, is removed from the message
Eric Paris7b41b172008-04-23 14:10:25 -04001194 * queue, @msq. The @target task structure contains a pointer to the
1195 * process that will be receiving the message (not equal to the current
Linus Torvalds1da177e2005-04-16 15:20:36 -07001196 * process when inline receives are being performed).
1197 * @msq contains the message queue to retrieve message from.
1198 * @msg contains the message destination.
1199 * @target contains the task structure for recipient process.
1200 * @type contains the type of message requested.
1201 * @mode contains the operational flags.
1202 * Return 0 if permission is granted.
1203 *
1204 * Security hooks for System V Shared Memory Segments
1205 *
1206 * @shm_alloc_security:
1207 * Allocate and attach a security structure to the shp->shm_perm.security
1208 * field. The security field is initialized to NULL when the structure is
1209 * first created.
1210 * @shp contains the shared memory structure to be modified.
1211 * Return 0 if operation was successful and permission is granted.
1212 * @shm_free_security:
1213 * Deallocate the security struct for this memory segment.
1214 * @shp contains the shared memory structure to be modified.
1215 * @shm_associate:
1216 * Check permission when a shared memory region is requested through the
1217 * shmget system call. This hook is only called when returning the shared
1218 * memory region identifier for an existing region, not when a new shared
1219 * memory region is created.
1220 * @shp contains the shared memory structure to be modified.
1221 * @shmflg contains the operation control flags.
1222 * Return 0 if permission is granted.
1223 * @shm_shmctl:
1224 * Check permission when a shared memory control operation specified by
1225 * @cmd is to be performed on the shared memory region @shp.
1226 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1227 * @shp contains shared memory structure to be modified.
1228 * @cmd contains the operation to be performed.
1229 * Return 0 if permission is granted.
1230 * @shm_shmat:
1231 * Check permissions prior to allowing the shmat system call to attach the
1232 * shared memory segment @shp to the data segment of the calling process.
1233 * The attaching address is specified by @shmaddr.
1234 * @shp contains the shared memory structure to be modified.
1235 * @shmaddr contains the address to attach memory region to.
1236 * @shmflg contains the operational flags.
1237 * Return 0 if permission is granted.
1238 *
1239 * Security hooks for System V Semaphores
1240 *
1241 * @sem_alloc_security:
1242 * Allocate and attach a security structure to the sma->sem_perm.security
1243 * field. The security field is initialized to NULL when the structure is
1244 * first created.
1245 * @sma contains the semaphore structure
1246 * Return 0 if operation was successful and permission is granted.
1247 * @sem_free_security:
1248 * deallocate security struct for this semaphore
1249 * @sma contains the semaphore structure.
1250 * @sem_associate:
1251 * Check permission when a semaphore is requested through the semget
1252 * system call. This hook is only called when returning the semaphore
1253 * identifier for an existing semaphore, not when a new one must be
1254 * created.
1255 * @sma contains the semaphore structure.
1256 * @semflg contains the operation control flags.
1257 * Return 0 if permission is granted.
1258 * @sem_semctl:
1259 * Check permission when a semaphore operation specified by @cmd is to be
Eric Paris7b41b172008-04-23 14:10:25 -04001260 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
Linus Torvalds1da177e2005-04-16 15:20:36 -07001261 * IPC_INFO or SEM_INFO.
1262 * @sma contains the semaphore structure. May be NULL.
1263 * @cmd contains the operation to be performed.
1264 * Return 0 if permission is granted.
1265 * @sem_semop
1266 * Check permissions before performing operations on members of the
Eric Paris7b41b172008-04-23 14:10:25 -04001267 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1268 * may be modified.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001269 * @sma contains the semaphore structure.
1270 * @sops contains the operations to perform.
1271 * @nsops contains the number of operations to perform.
1272 * @alter contains the flag indicating whether changes are to be made.
1273 * Return 0 if permission is granted.
1274 *
Ingo Molnar9e488582009-05-07 19:26:19 +10001275 * @ptrace_access_check:
David Howells5cd9c582008-08-14 11:37:28 +01001276 * Check permission before allowing the current process to trace the
Linus Torvalds1da177e2005-04-16 15:20:36 -07001277 * @child process.
1278 * Security modules may also want to perform a process tracing check
1279 * during an execve in the set_security or apply_creds hooks of
David Howellsd84f4f92008-11-14 10:39:23 +11001280 * tracing check during an execve in the bprm_set_creds hook of
Linus Torvalds1da177e2005-04-16 15:20:36 -07001281 * binprm_security_ops if the process is being traced and its security
1282 * attributes would be changed by the execve.
David Howells5cd9c582008-08-14 11:37:28 +01001283 * @child contains the task_struct structure for the target process.
Stephen Smalley006ebb42008-05-19 08:32:49 -04001284 * @mode contains the PTRACE_MODE flags indicating the form of access.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001285 * Return 0 if permission is granted.
David Howells5cd9c582008-08-14 11:37:28 +01001286 * @ptrace_traceme:
1287 * Check that the @parent process has sufficient permission to trace the
1288 * current process before allowing the current process to present itself
1289 * to the @parent process for tracing.
David Howells5cd9c582008-08-14 11:37:28 +01001290 * @parent contains the task_struct structure for debugger process.
1291 * Return 0 if permission is granted.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001292 * @capget:
1293 * Get the @effective, @inheritable, and @permitted capability sets for
1294 * the @target process. The hook may also perform permission checking to
1295 * determine if the current process is allowed to see the capability sets
1296 * of the @target process.
1297 * @target contains the task_struct structure for target process.
1298 * @effective contains the effective capability set.
1299 * @inheritable contains the inheritable capability set.
1300 * @permitted contains the permitted capability set.
1301 * Return 0 if the capability sets were successfully obtained.
David Howellsd84f4f92008-11-14 10:39:23 +11001302 * @capset:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001303 * Set the @effective, @inheritable, and @permitted capability sets for
David Howells1cdcbec2008-11-14 10:39:14 +11001304 * the current process.
David Howellsd84f4f92008-11-14 10:39:23 +11001305 * @new contains the new credentials structure for target process.
1306 * @old contains the current credentials structure for target process.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001307 * @effective contains the effective capability set.
1308 * @inheritable contains the inheritable capability set.
1309 * @permitted contains the permitted capability set.
David Howellsd84f4f92008-11-14 10:39:23 +11001310 * Return 0 and update @new if permission is granted.
Chris Wright12b59892006-03-25 03:07:41 -08001311 * @capable:
David Howells3699c532009-01-06 22:27:01 +00001312 * Check whether the @tsk process has the @cap capability in the indicated
1313 * credentials.
David Howells3699c532009-01-06 22:27:01 +00001314 * @cred contains the credentials to use.
Vsevolod Alekseev11be0b32011-11-05 02:35:28 -07001315 * @ns contains the user namespace we want the capability in
Chris Wright12b59892006-03-25 03:07:41 -08001316 * @cap contains the capability <include/linux/capability.h>.
David Howells3699c532009-01-06 22:27:01 +00001317 * @audit: Whether to write an audit message or not
Chris Wright12b59892006-03-25 03:07:41 -08001318 * Return 0 if the capability is granted for @tsk.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001319 * @syslog:
1320 * Check permission before accessing the kernel message ring or changing
1321 * logging to the console.
Eric Paris7b41b172008-04-23 14:10:25 -04001322 * See the syslog(2) manual page for an explanation of the @type values.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001323 * @type contains the type of action.
Kees Cook00234592010-02-03 15:36:43 -08001324 * @from_file indicates the context of action (if it came from /proc).
Linus Torvalds1da177e2005-04-16 15:20:36 -07001325 * Return 0 if permission is granted.
1326 * @settime:
1327 * Check permission to change the system time.
1328 * struct timespec and timezone are defined in include/linux/time.h
1329 * @ts contains new time
1330 * @tz contains new timezone
1331 * Return 0 if permission is granted.
1332 * @vm_enough_memory:
1333 * Check permissions for allocating a new virtual mapping.
Alan Cox34b4e4a2007-08-22 14:01:28 -07001334 * @mm contains the mm struct it is being added to.
Eric Paris7b41b172008-04-23 14:10:25 -04001335 * @pages contains the number of pages.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001336 * Return 0 if permission is granted.
1337 *
David Quigley746df9b2013-05-22 12:50:35 -04001338 * @ismaclabel:
1339 * Check if the extended attribute specified by @name
1340 * represents a MAC label. Returns 1 if name is a MAC
1341 * attribute otherwise returns 0.
1342 * @name full extended attribute name to check against
1343 * LSM as a MAC label.
1344 *
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07001345 * @secid_to_secctx:
Eric Parisd5630b92010-10-13 16:24:48 -04001346 * Convert secid to security context. If secdata is NULL the length of
1347 * the result will be returned in seclen, but no secdata will be returned.
1348 * This does mean that the length could change between calls to check the
1349 * length and the next call which actually allocates and returns the secdata.
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07001350 * @secid contains the security ID.
1351 * @secdata contains the pointer that stores the converted security context.
Eric Parisd5630b92010-10-13 16:24:48 -04001352 * @seclen pointer which contains the length of the data
David Howells63cb3442008-01-15 23:47:35 +00001353 * @secctx_to_secid:
Eric Paris7b41b172008-04-23 14:10:25 -04001354 * Convert security context to secid.
1355 * @secid contains the pointer to the generated security ID.
1356 * @secdata contains the security context.
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07001357 *
1358 * @release_secctx:
1359 * Release the security context.
1360 * @secdata contains the security context.
1361 * @seclen contains the length of the security context.
1362 *
Ahmed S. Darwish03d37d22008-03-01 22:00:05 +02001363 * Security hooks for Audit
1364 *
1365 * @audit_rule_init:
1366 * Allocate and initialize an LSM audit rule structure.
1367 * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
1368 * @op contains the operator the rule uses.
1369 * @rulestr contains the context where the rule will be applied to.
1370 * @lsmrule contains a pointer to receive the result.
1371 * Return 0 if @lsmrule has been successfully set,
1372 * -EINVAL in case of an invalid rule.
1373 *
1374 * @audit_rule_known:
1375 * Specifies whether given @rule contains any fields related to current LSM.
1376 * @rule contains the audit rule of interest.
1377 * Return 1 in case of relation found, 0 otherwise.
1378 *
1379 * @audit_rule_match:
1380 * Determine if given @secid matches a rule previously approved
1381 * by @audit_rule_known.
1382 * @secid contains the security id in question.
1383 * @field contains the field which relates to current LSM.
1384 * @op contains the operator that will be used for matching.
1385 * @rule points to the audit rule that will be checked against.
1386 * @actx points to the audit context associated with the check.
1387 * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
1388 *
1389 * @audit_rule_free:
1390 * Deallocate the LSM audit rule structure previously allocated by
1391 * audit_rule_init.
1392 * @rule contains the allocated rule
1393 *
David P. Quigley1ee65e32009-09-03 14:25:57 -04001394 * @inode_notifysecctx:
1395 * Notify the security module of what the security context of an inode
1396 * should be. Initializes the incore security context managed by the
1397 * security module for this inode. Example usage: NFS client invokes
1398 * this hook to initialize the security context in its incore inode to the
1399 * value provided by the server for the file when the server returned the
1400 * file's attributes to the client.
1401 *
1402 * Must be called with inode->i_mutex locked.
1403 *
1404 * @inode we wish to set the security context of.
1405 * @ctx contains the string which we wish to set in the inode.
1406 * @ctxlen contains the length of @ctx.
1407 *
1408 * @inode_setsecctx:
1409 * Change the security context of an inode. Updates the
1410 * incore security context managed by the security module and invokes the
1411 * fs code as needed (via __vfs_setxattr_noperm) to update any backing
1412 * xattrs that represent the context. Example usage: NFS server invokes
1413 * this hook to change the security context in its incore inode and on the
1414 * backing filesystem to a value provided by the client on a SETATTR
1415 * operation.
1416 *
1417 * Must be called with inode->i_mutex locked.
1418 *
1419 * @dentry contains the inode we wish to set the security context of.
1420 * @ctx contains the string which we wish to set in the inode.
1421 * @ctxlen contains the length of @ctx.
1422 *
1423 * @inode_getsecctx:
J. Bruce Fields4726e8f2013-05-09 11:41:04 -04001424 * On success, returns 0 and fills out @ctx and @ctxlen with the security
1425 * context for the given @inode.
David P. Quigley1ee65e32009-09-03 14:25:57 -04001426 *
rongqing.li@windriver.comfc9ff9b2011-09-06 11:35:36 +08001427 * @inode we wish to get the security context of.
David P. Quigley1ee65e32009-09-03 14:25:57 -04001428 * @ctx is a pointer in which to place the allocated security context.
1429 * @ctxlen points to the place to put the length of @ctx.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001430 * This is the main security structure.
1431 */
1432struct security_operations {
Ahmed S. Darwish076c54c2008-03-06 18:09:10 +02001433 char name[SECURITY_NAME_MAX + 1];
1434
Ingo Molnar9e488582009-05-07 19:26:19 +10001435 int (*ptrace_access_check) (struct task_struct *child, unsigned int mode);
David Howells5cd9c582008-08-14 11:37:28 +01001436 int (*ptrace_traceme) (struct task_struct *parent);
Eric Paris7b41b172008-04-23 14:10:25 -04001437 int (*capget) (struct task_struct *target,
1438 kernel_cap_t *effective,
1439 kernel_cap_t *inheritable, kernel_cap_t *permitted);
David Howellsd84f4f92008-11-14 10:39:23 +11001440 int (*capset) (struct cred *new,
1441 const struct cred *old,
1442 const kernel_cap_t *effective,
1443 const kernel_cap_t *inheritable,
1444 const kernel_cap_t *permitted);
Eric Paris6a9de492012-01-03 12:25:14 -05001445 int (*capable) (const struct cred *cred, struct user_namespace *ns,
1446 int cap, int audit);
Eric Paris7b41b172008-04-23 14:10:25 -04001447 int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
1448 int (*quota_on) (struct dentry *dentry);
Eric Paris12b30522010-11-15 18:36:29 -05001449 int (*syslog) (int type);
Richard Cochran1e6d7672011-02-01 13:50:58 +00001450 int (*settime) (const struct timespec *ts, const struct timezone *tz);
Alan Cox34b4e4a2007-08-22 14:01:28 -07001451 int (*vm_enough_memory) (struct mm_struct *mm, long pages);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001452
David Howellsa6f76f22008-11-14 10:39:24 +11001453 int (*bprm_set_creds) (struct linux_binprm *bprm);
Eric Paris7b41b172008-04-23 14:10:25 -04001454 int (*bprm_check_security) (struct linux_binprm *bprm);
1455 int (*bprm_secureexec) (struct linux_binprm *bprm);
David Howellsa6f76f22008-11-14 10:39:24 +11001456 void (*bprm_committing_creds) (struct linux_binprm *bprm);
1457 void (*bprm_committed_creds) (struct linux_binprm *bprm);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001458
Eric Paris7b41b172008-04-23 14:10:25 -04001459 int (*sb_alloc_security) (struct super_block *sb);
1460 void (*sb_free_security) (struct super_block *sb);
1461 int (*sb_copy_data) (char *orig, char *copy);
Eric Parisff36fe22011-03-03 16:09:14 -05001462 int (*sb_remount) (struct super_block *sb, void *data);
James Morris12204e22008-12-19 10:44:42 +11001463 int (*sb_kern_mount) (struct super_block *sb, int flags, void *data);
Eric Paris2069f452008-07-04 09:47:13 +10001464 int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
David Howells726c3342006-06-23 02:02:58 -07001465 int (*sb_statfs) (struct dentry *dentry);
Al Viro808d4e32012-10-11 11:42:01 -04001466 int (*sb_mount) (const char *dev_name, struct path *path,
1467 const char *type, unsigned long flags, void *data);
Eric Paris7b41b172008-04-23 14:10:25 -04001468 int (*sb_umount) (struct vfsmount *mnt, int flags);
Al Virob5266eb2008-03-22 17:48:24 -04001469 int (*sb_pivotroot) (struct path *old_path,
1470 struct path *new_path);
Eric Parise0007522008-03-05 10:31:54 -05001471 int (*sb_set_mnt_opts) (struct super_block *sb,
David Quigley649f6e72013-05-22 12:50:36 -04001472 struct security_mnt_opts *opts,
1473 unsigned long kern_flags,
1474 unsigned long *set_kern_flags);
Jeff Layton094f7b62013-04-01 08:14:24 -04001475 int (*sb_clone_mnt_opts) (const struct super_block *oldsb,
Eric Parisc9180a52007-11-30 13:00:35 -05001476 struct super_block *newsb);
Eric Parise0007522008-03-05 10:31:54 -05001477 int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
David Quigleyd47be3d2013-05-22 12:50:34 -04001478 int (*dentry_init_security) (struct dentry *dentry, int mode,
1479 struct qstr *name, void **ctx,
1480 u32 *ctxlen);
1481
Linus Torvalds1da177e2005-04-16 15:20:36 -07001482
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09001483#ifdef CONFIG_SECURITY_PATH
1484 int (*path_unlink) (struct path *dir, struct dentry *dentry);
Al Viro4572bef2011-11-21 14:56:21 -05001485 int (*path_mkdir) (struct path *dir, struct dentry *dentry, umode_t mode);
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09001486 int (*path_rmdir) (struct path *dir, struct dentry *dentry);
Al Viro04fc66e2011-11-21 14:58:38 -05001487 int (*path_mknod) (struct path *dir, struct dentry *dentry, umode_t mode,
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09001488 unsigned int dev);
Tetsuo Handaea0d3ab2010-06-02 13:24:43 +09001489 int (*path_truncate) (struct path *path);
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09001490 int (*path_symlink) (struct path *dir, struct dentry *dentry,
1491 const char *old_name);
1492 int (*path_link) (struct dentry *old_dentry, struct path *new_dir,
1493 struct dentry *new_dentry);
1494 int (*path_rename) (struct path *old_dir, struct dentry *old_dentry,
1495 struct path *new_dir, struct dentry *new_dentry);
Al Virocdcf1162011-12-08 10:51:53 -05001496 int (*path_chmod) (struct path *path, umode_t mode);
Eric W. Biedermand2b31ca2012-06-01 16:14:19 -06001497 int (*path_chown) (struct path *path, kuid_t uid, kgid_t gid);
Tetsuo Handa8b8efb42009-10-04 21:49:48 +09001498 int (*path_chroot) (struct path *path);
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09001499#endif
1500
Eric Paris7b41b172008-04-23 14:10:25 -04001501 int (*inode_alloc_security) (struct inode *inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001502 void (*inode_free_security) (struct inode *inode);
Stephen Smalley5e41ff92005-09-09 13:01:35 -07001503 int (*inode_init_security) (struct inode *inode, struct inode *dir,
Tetsuo Handa95489062013-07-25 05:44:02 +09001504 const struct qstr *qstr, const char **name,
Eric Paris2a7dba32011-02-01 11:05:39 -05001505 void **value, size_t *len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001506 int (*inode_create) (struct inode *dir,
Al Viro4acdaf22011-07-26 01:42:34 -04001507 struct dentry *dentry, umode_t mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001508 int (*inode_link) (struct dentry *old_dentry,
Eric Paris7b41b172008-04-23 14:10:25 -04001509 struct inode *dir, struct dentry *new_dentry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001510 int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
1511 int (*inode_symlink) (struct inode *dir,
Eric Paris7b41b172008-04-23 14:10:25 -04001512 struct dentry *dentry, const char *old_name);
Al Viro18bb1db2011-07-26 01:41:39 -04001513 int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, umode_t mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001514 int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
1515 int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
Al Viro1a67aaf2011-07-26 01:52:52 -04001516 umode_t mode, dev_t dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001517 int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
Eric Paris7b41b172008-04-23 14:10:25 -04001518 struct inode *new_dir, struct dentry *new_dentry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001519 int (*inode_readlink) (struct dentry *dentry);
1520 int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
Al Viroe74f71e2011-06-20 19:38:15 -04001521 int (*inode_permission) (struct inode *inode, int mask);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001522 int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
1523 int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
David Howells8f0cfa52008-04-29 00:59:41 -07001524 int (*inode_setxattr) (struct dentry *dentry, const char *name,
1525 const void *value, size_t size, int flags);
1526 void (*inode_post_setxattr) (struct dentry *dentry, const char *name,
1527 const void *value, size_t size, int flags);
1528 int (*inode_getxattr) (struct dentry *dentry, const char *name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001529 int (*inode_listxattr) (struct dentry *dentry);
David Howells8f0cfa52008-04-29 00:59:41 -07001530 int (*inode_removexattr) (struct dentry *dentry, const char *name);
Serge E. Hallynb5376772007-10-16 23:31:36 -07001531 int (*inode_need_killpriv) (struct dentry *dentry);
1532 int (*inode_killpriv) (struct dentry *dentry);
Eric Paris7b41b172008-04-23 14:10:25 -04001533 int (*inode_getsecurity) (const struct inode *inode, const char *name, void **buffer, bool alloc);
1534 int (*inode_setsecurity) (struct inode *inode, const char *name, const void *value, size_t size, int flags);
1535 int (*inode_listsecurity) (struct inode *inode, char *buffer, size_t buffer_size);
1536 void (*inode_getsecid) (const struct inode *inode, u32 *secid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001537
Eric Paris7b41b172008-04-23 14:10:25 -04001538 int (*file_permission) (struct file *file, int mask);
1539 int (*file_alloc_security) (struct file *file);
1540 void (*file_free_security) (struct file *file);
1541 int (*file_ioctl) (struct file *file, unsigned int cmd,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001542 unsigned long arg);
Al Viroe5467852012-05-30 13:30:51 -04001543 int (*mmap_addr) (unsigned long addr);
1544 int (*mmap_file) (struct file *file,
Eric Parised032182007-06-28 15:55:21 -04001545 unsigned long reqprot, unsigned long prot,
Al Viroe5467852012-05-30 13:30:51 -04001546 unsigned long flags);
Eric Paris7b41b172008-04-23 14:10:25 -04001547 int (*file_mprotect) (struct vm_area_struct *vma,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001548 unsigned long reqprot,
1549 unsigned long prot);
Eric Paris7b41b172008-04-23 14:10:25 -04001550 int (*file_lock) (struct file *file, unsigned int cmd);
1551 int (*file_fcntl) (struct file *file, unsigned int cmd,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001552 unsigned long arg);
Eric Paris7b41b172008-04-23 14:10:25 -04001553 int (*file_set_fowner) (struct file *file);
1554 int (*file_send_sigiotask) (struct task_struct *tsk,
1555 struct fown_struct *fown, int sig);
1556 int (*file_receive) (struct file *file);
Eric Paris83d49852012-04-04 13:45:40 -04001557 int (*file_open) (struct file *file, const struct cred *cred);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001558
1559 int (*task_create) (unsigned long clone_flags);
Kees Cook1a2a4d02011-12-21 12:17:03 -08001560 void (*task_free) (struct task_struct *task);
David Howellsee18d642009-09-02 09:14:21 +01001561 int (*cred_alloc_blank) (struct cred *cred, gfp_t gfp);
David Howellsf1752ee2008-11-14 10:39:17 +11001562 void (*cred_free) (struct cred *cred);
David Howellsd84f4f92008-11-14 10:39:23 +11001563 int (*cred_prepare)(struct cred *new, const struct cred *old,
1564 gfp_t gfp);
David Howellsee18d642009-09-02 09:14:21 +01001565 void (*cred_transfer)(struct cred *new, const struct cred *old);
David Howells3a3b7ce2008-11-14 10:39:28 +11001566 int (*kernel_act_as)(struct cred *new, u32 secid);
1567 int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
Eric Parisdd8dbf22009-11-03 16:35:32 +11001568 int (*kernel_module_request)(char *kmod_name);
Kees Cook2e72d512012-10-16 07:32:07 +10301569 int (*kernel_module_from_file)(struct file *file);
David Howellsd84f4f92008-11-14 10:39:23 +11001570 int (*task_fix_setuid) (struct cred *new, const struct cred *old,
1571 int flags);
Eric Paris7b41b172008-04-23 14:10:25 -04001572 int (*task_setpgid) (struct task_struct *p, pid_t pgid);
1573 int (*task_getpgid) (struct task_struct *p);
1574 int (*task_getsid) (struct task_struct *p);
1575 void (*task_getsecid) (struct task_struct *p, u32 *secid);
Eric Paris7b41b172008-04-23 14:10:25 -04001576 int (*task_setnice) (struct task_struct *p, int nice);
1577 int (*task_setioprio) (struct task_struct *p, int ioprio);
1578 int (*task_getioprio) (struct task_struct *p);
Jiri Slaby8fd00b42009-08-26 18:41:16 +02001579 int (*task_setrlimit) (struct task_struct *p, unsigned int resource,
1580 struct rlimit *new_rlim);
KOSAKI Motohirob0ae1982010-10-15 04:21:18 +09001581 int (*task_setscheduler) (struct task_struct *p);
Eric Paris7b41b172008-04-23 14:10:25 -04001582 int (*task_getscheduler) (struct task_struct *p);
1583 int (*task_movememory) (struct task_struct *p);
1584 int (*task_kill) (struct task_struct *p,
1585 struct siginfo *info, int sig, u32 secid);
1586 int (*task_wait) (struct task_struct *p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001587 int (*task_prctl) (int option, unsigned long arg2,
1588 unsigned long arg3, unsigned long arg4,
David Howellsd84f4f92008-11-14 10:39:23 +11001589 unsigned long arg5);
Eric Paris7b41b172008-04-23 14:10:25 -04001590 void (*task_to_inode) (struct task_struct *p, struct inode *inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001591
Eric Paris7b41b172008-04-23 14:10:25 -04001592 int (*ipc_permission) (struct kern_ipc_perm *ipcp, short flag);
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02001593 void (*ipc_getsecid) (struct kern_ipc_perm *ipcp, u32 *secid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001594
Eric Paris7b41b172008-04-23 14:10:25 -04001595 int (*msg_msg_alloc_security) (struct msg_msg *msg);
1596 void (*msg_msg_free_security) (struct msg_msg *msg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001597
Eric Paris7b41b172008-04-23 14:10:25 -04001598 int (*msg_queue_alloc_security) (struct msg_queue *msq);
1599 void (*msg_queue_free_security) (struct msg_queue *msq);
1600 int (*msg_queue_associate) (struct msg_queue *msq, int msqflg);
1601 int (*msg_queue_msgctl) (struct msg_queue *msq, int cmd);
1602 int (*msg_queue_msgsnd) (struct msg_queue *msq,
1603 struct msg_msg *msg, int msqflg);
1604 int (*msg_queue_msgrcv) (struct msg_queue *msq,
1605 struct msg_msg *msg,
1606 struct task_struct *target,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001607 long type, int mode);
1608
Eric Paris7b41b172008-04-23 14:10:25 -04001609 int (*shm_alloc_security) (struct shmid_kernel *shp);
1610 void (*shm_free_security) (struct shmid_kernel *shp);
1611 int (*shm_associate) (struct shmid_kernel *shp, int shmflg);
1612 int (*shm_shmctl) (struct shmid_kernel *shp, int cmd);
1613 int (*shm_shmat) (struct shmid_kernel *shp,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001614 char __user *shmaddr, int shmflg);
1615
Eric Paris7b41b172008-04-23 14:10:25 -04001616 int (*sem_alloc_security) (struct sem_array *sma);
1617 void (*sem_free_security) (struct sem_array *sma);
1618 int (*sem_associate) (struct sem_array *sma, int semflg);
1619 int (*sem_semctl) (struct sem_array *sma, int cmd);
1620 int (*sem_semop) (struct sem_array *sma,
1621 struct sembuf *sops, unsigned nsops, int alter);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001622
Eric Paris7b41b172008-04-23 14:10:25 -04001623 int (*netlink_send) (struct sock *sk, struct sk_buff *skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001624
Linus Torvalds1da177e2005-04-16 15:20:36 -07001625 void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1626
Eric Paris7b41b172008-04-23 14:10:25 -04001627 int (*getprocattr) (struct task_struct *p, char *name, char **value);
1628 int (*setprocattr) (struct task_struct *p, char *name, void *value, size_t size);
David Quigley746df9b2013-05-22 12:50:35 -04001629 int (*ismaclabel) (const char *name);
Eric Paris7b41b172008-04-23 14:10:25 -04001630 int (*secid_to_secctx) (u32 secid, char **secdata, u32 *seclen);
David Howells7bf570d2008-04-29 20:52:51 +01001631 int (*secctx_to_secid) (const char *secdata, u32 seclen, u32 *secid);
Eric Paris7b41b172008-04-23 14:10:25 -04001632 void (*release_secctx) (char *secdata, u32 seclen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001633
David P. Quigley1ee65e32009-09-03 14:25:57 -04001634 int (*inode_notifysecctx)(struct inode *inode, void *ctx, u32 ctxlen);
1635 int (*inode_setsecctx)(struct dentry *dentry, void *ctx, u32 ctxlen);
1636 int (*inode_getsecctx)(struct inode *inode, void **ctx, u32 *ctxlen);
1637
Linus Torvalds1da177e2005-04-16 15:20:36 -07001638#ifdef CONFIG_SECURITY_NETWORK
David S. Miller3610cda2011-01-05 15:38:53 -08001639 int (*unix_stream_connect) (struct sock *sock, struct sock *other, struct sock *newsk);
Eric Paris7b41b172008-04-23 14:10:25 -04001640 int (*unix_may_send) (struct socket *sock, struct socket *other);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001641
1642 int (*socket_create) (int family, int type, int protocol, int kern);
Eric Paris7b41b172008-04-23 14:10:25 -04001643 int (*socket_post_create) (struct socket *sock, int family,
Venkat Yekkirala7420ed22006-08-04 23:17:57 -07001644 int type, int protocol, int kern);
Eric Paris7b41b172008-04-23 14:10:25 -04001645 int (*socket_bind) (struct socket *sock,
1646 struct sockaddr *address, int addrlen);
1647 int (*socket_connect) (struct socket *sock,
1648 struct sockaddr *address, int addrlen);
1649 int (*socket_listen) (struct socket *sock, int backlog);
1650 int (*socket_accept) (struct socket *sock, struct socket *newsock);
Eric Paris7b41b172008-04-23 14:10:25 -04001651 int (*socket_sendmsg) (struct socket *sock,
1652 struct msghdr *msg, int size);
1653 int (*socket_recvmsg) (struct socket *sock,
1654 struct msghdr *msg, int size, int flags);
1655 int (*socket_getsockname) (struct socket *sock);
1656 int (*socket_getpeername) (struct socket *sock);
1657 int (*socket_getsockopt) (struct socket *sock, int level, int optname);
1658 int (*socket_setsockopt) (struct socket *sock, int level, int optname);
1659 int (*socket_shutdown) (struct socket *sock, int how);
1660 int (*socket_sock_rcv_skb) (struct sock *sk, struct sk_buff *skb);
Catherine Zhang2c7946a2006-03-20 22:41:23 -08001661 int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07001662 int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
Al Viro7d877f32005-10-21 03:20:43 -04001663 int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001664 void (*sk_free_security) (struct sock *sk);
Venkat Yekkirala892c1412006-08-04 23:08:56 -07001665 void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07001666 void (*sk_getsecid) (struct sock *sk, u32 *secid);
Eric Paris7b41b172008-04-23 14:10:25 -04001667 void (*sock_graft) (struct sock *sk, struct socket *parent);
1668 int (*inet_conn_request) (struct sock *sk, struct sk_buff *skb,
1669 struct request_sock *req);
1670 void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req);
1671 void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb);
Eric Paris2606fd12010-10-13 16:24:41 -04001672 int (*secmark_relabel_packet) (u32 secid);
1673 void (*secmark_refcount_inc) (void);
1674 void (*secmark_refcount_dec) (void);
Eric Paris7b41b172008-04-23 14:10:25 -04001675 void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
Paul Moore5dbbaf22013-01-14 07:12:19 +00001676 int (*tun_dev_alloc_security) (void **security);
1677 void (*tun_dev_free_security) (void *security);
1678 int (*tun_dev_create) (void);
1679 int (*tun_dev_attach_queue) (void *security);
1680 int (*tun_dev_attach) (struct sock *sk, void *security);
1681 int (*tun_dev_open) (void *security);
Eric Dumazetca10b9e2013-04-08 17:58:11 +00001682 void (*skb_owned_by) (struct sk_buff *skb, struct sock *sk);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001683#endif /* CONFIG_SECURITY_NETWORK */
David Howells29db9192005-10-30 15:02:44 -08001684
Trent Jaegerdf718372005-12-13 23:12:27 -08001685#ifdef CONFIG_SECURITY_NETWORK_XFRM
Paul Moore03e1ad72008-04-12 19:07:52 -07001686 int (*xfrm_policy_alloc_security) (struct xfrm_sec_ctx **ctxp,
Nikolay Aleksandrov52a4c642014-03-07 12:44:19 +01001687 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
Paul Moore03e1ad72008-04-12 19:07:52 -07001688 int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
1689 void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
1690 int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
Paul Moore2e5aa862013-07-23 17:38:38 -04001691 int (*xfrm_state_alloc) (struct xfrm_state *x,
1692 struct xfrm_user_sec_ctx *sec_ctx);
1693 int (*xfrm_state_alloc_acquire) (struct xfrm_state *x,
1694 struct xfrm_sec_ctx *polsec,
1695 u32 secid);
Trent Jaegerdf718372005-12-13 23:12:27 -08001696 void (*xfrm_state_free_security) (struct xfrm_state *x);
Catherine Zhangc8c05a82006-06-08 23:39:49 -07001697 int (*xfrm_state_delete_security) (struct xfrm_state *x);
Eric Paris7b41b172008-04-23 14:10:25 -04001698 int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1699 int (*xfrm_state_pol_flow_match) (struct xfrm_state *x,
1700 struct xfrm_policy *xp,
David S. Millere33f7702011-02-22 18:13:15 -08001701 const struct flowi *fl);
Eric Paris7b41b172008-04-23 14:10:25 -04001702 int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall);
Trent Jaegerdf718372005-12-13 23:12:27 -08001703#endif /* CONFIG_SECURITY_NETWORK_XFRM */
1704
David Howells29db9192005-10-30 15:02:44 -08001705 /* key management security hooks */
1706#ifdef CONFIG_KEYS
David Howellsd84f4f92008-11-14 10:39:23 +11001707 int (*key_alloc) (struct key *key, const struct cred *cred, unsigned long flags);
Eric Paris7b41b172008-04-23 14:10:25 -04001708 void (*key_free) (struct key *key);
1709 int (*key_permission) (key_ref_t key_ref,
David Howellsd84f4f92008-11-14 10:39:23 +11001710 const struct cred *cred,
Eric Paris7b41b172008-04-23 14:10:25 -04001711 key_perm_t perm);
David Howells70a5bb72008-04-29 01:01:26 -07001712 int (*key_getsecurity)(struct key *key, char **_buffer);
David Howells29db9192005-10-30 15:02:44 -08001713#endif /* CONFIG_KEYS */
1714
Ahmed S. Darwish03d37d22008-03-01 22:00:05 +02001715#ifdef CONFIG_AUDIT
Eric Paris7b41b172008-04-23 14:10:25 -04001716 int (*audit_rule_init) (u32 field, u32 op, char *rulestr, void **lsmrule);
1717 int (*audit_rule_known) (struct audit_krule *krule);
1718 int (*audit_rule_match) (u32 secid, u32 field, u32 op, void *lsmrule,
1719 struct audit_context *actx);
1720 void (*audit_rule_free) (void *lsmrule);
Ahmed S. Darwish03d37d22008-03-01 22:00:05 +02001721#endif /* CONFIG_AUDIT */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001722};
1723
Linus Torvalds1da177e2005-04-16 15:20:36 -07001724/* prototypes */
Eric Paris7b41b172008-04-23 14:10:25 -04001725extern int security_init(void);
Ahmed S. Darwish076c54c2008-03-06 18:09:10 +02001726extern int security_module_enable(struct security_operations *ops);
Eric Paris7b41b172008-04-23 14:10:25 -04001727extern int register_security(struct security_operations *ops);
James Morris5dbe3042011-08-30 13:48:53 +10001728extern void __init security_fixup_ops(struct security_operations *ops);
1729
Linus Torvalds1da177e2005-04-16 15:20:36 -07001730
James Morris20510f22007-10-16 23:31:32 -07001731/* Security operations */
Ingo Molnar9e488582009-05-07 19:26:19 +10001732int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
David Howells5cd9c582008-08-14 11:37:28 +01001733int security_ptrace_traceme(struct task_struct *parent);
James Morris20510f22007-10-16 23:31:32 -07001734int security_capget(struct task_struct *target,
Eric Paris7b41b172008-04-23 14:10:25 -04001735 kernel_cap_t *effective,
1736 kernel_cap_t *inheritable,
1737 kernel_cap_t *permitted);
David Howellsd84f4f92008-11-14 10:39:23 +11001738int security_capset(struct cred *new, const struct cred *old,
1739 const kernel_cap_t *effective,
1740 const kernel_cap_t *inheritable,
1741 const kernel_cap_t *permitted);
Eric Parisb7e724d2012-01-03 12:25:15 -05001742int security_capable(const struct cred *cred, struct user_namespace *ns,
Serge E. Hallyn34867402011-03-23 16:43:17 -07001743 int cap);
Eric Parisc7eba4a2012-01-03 12:25:15 -05001744int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
1745 int cap);
James Morris20510f22007-10-16 23:31:32 -07001746int security_quotactl(int cmds, int type, int id, struct super_block *sb);
1747int security_quota_on(struct dentry *dentry);
Eric Paris12b30522010-11-15 18:36:29 -05001748int security_syslog(int type);
Richard Cochran1e6d7672011-02-01 13:50:58 +00001749int security_settime(const struct timespec *ts, const struct timezone *tz);
James Morris20510f22007-10-16 23:31:32 -07001750int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
David Howellsa6f76f22008-11-14 10:39:24 +11001751int security_bprm_set_creds(struct linux_binprm *bprm);
James Morris20510f22007-10-16 23:31:32 -07001752int security_bprm_check(struct linux_binprm *bprm);
David Howellsa6f76f22008-11-14 10:39:24 +11001753void security_bprm_committing_creds(struct linux_binprm *bprm);
1754void security_bprm_committed_creds(struct linux_binprm *bprm);
James Morris20510f22007-10-16 23:31:32 -07001755int security_bprm_secureexec(struct linux_binprm *bprm);
1756int security_sb_alloc(struct super_block *sb);
1757void security_sb_free(struct super_block *sb);
Eric Parise0007522008-03-05 10:31:54 -05001758int security_sb_copy_data(char *orig, char *copy);
Eric Parisff36fe22011-03-03 16:09:14 -05001759int security_sb_remount(struct super_block *sb, void *data);
James Morris12204e22008-12-19 10:44:42 +11001760int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
Eric Paris2069f452008-07-04 09:47:13 +10001761int security_sb_show_options(struct seq_file *m, struct super_block *sb);
James Morris20510f22007-10-16 23:31:32 -07001762int security_sb_statfs(struct dentry *dentry);
Al Viro808d4e32012-10-11 11:42:01 -04001763int security_sb_mount(const char *dev_name, struct path *path,
1764 const char *type, unsigned long flags, void *data);
James Morris20510f22007-10-16 23:31:32 -07001765int security_sb_umount(struct vfsmount *mnt, int flags);
Al Virob5266eb2008-03-22 17:48:24 -04001766int security_sb_pivotroot(struct path *old_path, struct path *new_path);
David Quigley649f6e72013-05-22 12:50:36 -04001767int security_sb_set_mnt_opts(struct super_block *sb,
1768 struct security_mnt_opts *opts,
1769 unsigned long kern_flags,
1770 unsigned long *set_kern_flags);
Jeff Layton094f7b62013-04-01 08:14:24 -04001771int security_sb_clone_mnt_opts(const struct super_block *oldsb,
Eric Parisc9180a52007-11-30 13:00:35 -05001772 struct super_block *newsb);
Eric Parise0007522008-03-05 10:31:54 -05001773int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
David Quigleyd47be3d2013-05-22 12:50:34 -04001774int security_dentry_init_security(struct dentry *dentry, int mode,
1775 struct qstr *name, void **ctx,
1776 u32 *ctxlen);
Eric Parisc9180a52007-11-30 13:00:35 -05001777
James Morris20510f22007-10-16 23:31:32 -07001778int security_inode_alloc(struct inode *inode);
1779void security_inode_free(struct inode *inode);
1780int security_inode_init_security(struct inode *inode, struct inode *dir,
Mimi Zohar9d8f13b2011-06-06 15:29:25 -04001781 const struct qstr *qstr,
1782 initxattrs initxattrs, void *fs_data);
1783int security_old_inode_init_security(struct inode *inode, struct inode *dir,
Tetsuo Handa95489062013-07-25 05:44:02 +09001784 const struct qstr *qstr, const char **name,
Mimi Zohar9d8f13b2011-06-06 15:29:25 -04001785 void **value, size_t *len);
Al Viro4acdaf22011-07-26 01:42:34 -04001786int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
James Morris20510f22007-10-16 23:31:32 -07001787int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1788 struct dentry *new_dentry);
1789int security_inode_unlink(struct inode *dir, struct dentry *dentry);
1790int security_inode_symlink(struct inode *dir, struct dentry *dentry,
Eric Paris7b41b172008-04-23 14:10:25 -04001791 const char *old_name);
Al Viro18bb1db2011-07-26 01:41:39 -04001792int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
James Morris20510f22007-10-16 23:31:32 -07001793int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
Al Viro1a67aaf2011-07-26 01:52:52 -04001794int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
James Morris20510f22007-10-16 23:31:32 -07001795int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
Eric Paris7b41b172008-04-23 14:10:25 -04001796 struct inode *new_dir, struct dentry *new_dentry);
James Morris20510f22007-10-16 23:31:32 -07001797int security_inode_readlink(struct dentry *dentry);
1798int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
Al Virob77b0642008-07-17 09:37:02 -04001799int security_inode_permission(struct inode *inode, int mask);
James Morris20510f22007-10-16 23:31:32 -07001800int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
1801int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
David Howells8f0cfa52008-04-29 00:59:41 -07001802int security_inode_setxattr(struct dentry *dentry, const char *name,
1803 const void *value, size_t size, int flags);
1804void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1805 const void *value, size_t size, int flags);
1806int security_inode_getxattr(struct dentry *dentry, const char *name);
James Morris20510f22007-10-16 23:31:32 -07001807int security_inode_listxattr(struct dentry *dentry);
David Howells8f0cfa52008-04-29 00:59:41 -07001808int security_inode_removexattr(struct dentry *dentry, const char *name);
Serge E. Hallynb5376772007-10-16 23:31:36 -07001809int security_inode_need_killpriv(struct dentry *dentry);
1810int security_inode_killpriv(struct dentry *dentry);
David P. Quigley42492592008-02-04 22:29:39 -08001811int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
James Morris20510f22007-10-16 23:31:32 -07001812int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1813int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02001814void security_inode_getsecid(const struct inode *inode, u32 *secid);
James Morris20510f22007-10-16 23:31:32 -07001815int security_file_permission(struct file *file, int mask);
1816int security_file_alloc(struct file *file);
1817void security_file_free(struct file *file);
1818int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
Al Viro8b3ec682012-05-30 17:11:23 -04001819int security_mmap_file(struct file *file, unsigned long prot,
1820 unsigned long flags);
Al Viroe5467852012-05-30 13:30:51 -04001821int security_mmap_addr(unsigned long addr);
James Morris20510f22007-10-16 23:31:32 -07001822int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
Eric Paris7b41b172008-04-23 14:10:25 -04001823 unsigned long prot);
James Morris20510f22007-10-16 23:31:32 -07001824int security_file_lock(struct file *file, unsigned int cmd);
1825int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
1826int security_file_set_fowner(struct file *file);
1827int security_file_send_sigiotask(struct task_struct *tsk,
Eric Paris7b41b172008-04-23 14:10:25 -04001828 struct fown_struct *fown, int sig);
James Morris20510f22007-10-16 23:31:32 -07001829int security_file_receive(struct file *file);
Eric Paris83d49852012-04-04 13:45:40 -04001830int security_file_open(struct file *file, const struct cred *cred);
James Morris20510f22007-10-16 23:31:32 -07001831int security_task_create(unsigned long clone_flags);
Kees Cook1a2a4d02011-12-21 12:17:03 -08001832void security_task_free(struct task_struct *task);
David Howellsee18d642009-09-02 09:14:21 +01001833int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
David Howellsf1752ee2008-11-14 10:39:17 +11001834void security_cred_free(struct cred *cred);
David Howellsd84f4f92008-11-14 10:39:23 +11001835int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
David Howellsee18d642009-09-02 09:14:21 +01001836void security_transfer_creds(struct cred *new, const struct cred *old);
David Howells3a3b7ce2008-11-14 10:39:28 +11001837int security_kernel_act_as(struct cred *new, u32 secid);
1838int security_kernel_create_files_as(struct cred *new, struct inode *inode);
Eric Parisdd8dbf22009-11-03 16:35:32 +11001839int security_kernel_module_request(char *kmod_name);
Kees Cook2e72d512012-10-16 07:32:07 +10301840int security_kernel_module_from_file(struct file *file);
David Howellsd84f4f92008-11-14 10:39:23 +11001841int security_task_fix_setuid(struct cred *new, const struct cred *old,
1842 int flags);
James Morris20510f22007-10-16 23:31:32 -07001843int security_task_setpgid(struct task_struct *p, pid_t pgid);
1844int security_task_getpgid(struct task_struct *p);
1845int security_task_getsid(struct task_struct *p);
1846void security_task_getsecid(struct task_struct *p, u32 *secid);
James Morris20510f22007-10-16 23:31:32 -07001847int security_task_setnice(struct task_struct *p, int nice);
1848int security_task_setioprio(struct task_struct *p, int ioprio);
1849int security_task_getioprio(struct task_struct *p);
Jiri Slaby8fd00b42009-08-26 18:41:16 +02001850int security_task_setrlimit(struct task_struct *p, unsigned int resource,
1851 struct rlimit *new_rlim);
KOSAKI Motohirob0ae1982010-10-15 04:21:18 +09001852int security_task_setscheduler(struct task_struct *p);
James Morris20510f22007-10-16 23:31:32 -07001853int security_task_getscheduler(struct task_struct *p);
1854int security_task_movememory(struct task_struct *p);
1855int security_task_kill(struct task_struct *p, struct siginfo *info,
1856 int sig, u32 secid);
1857int security_task_wait(struct task_struct *p);
1858int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
David Howellsd84f4f92008-11-14 10:39:23 +11001859 unsigned long arg4, unsigned long arg5);
James Morris20510f22007-10-16 23:31:32 -07001860void security_task_to_inode(struct task_struct *p, struct inode *inode);
1861int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02001862void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
James Morris20510f22007-10-16 23:31:32 -07001863int security_msg_msg_alloc(struct msg_msg *msg);
1864void security_msg_msg_free(struct msg_msg *msg);
1865int security_msg_queue_alloc(struct msg_queue *msq);
1866void security_msg_queue_free(struct msg_queue *msq);
1867int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
1868int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
1869int security_msg_queue_msgsnd(struct msg_queue *msq,
Eric Paris7b41b172008-04-23 14:10:25 -04001870 struct msg_msg *msg, int msqflg);
James Morris20510f22007-10-16 23:31:32 -07001871int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
Eric Paris7b41b172008-04-23 14:10:25 -04001872 struct task_struct *target, long type, int mode);
James Morris20510f22007-10-16 23:31:32 -07001873int security_shm_alloc(struct shmid_kernel *shp);
1874void security_shm_free(struct shmid_kernel *shp);
1875int security_shm_associate(struct shmid_kernel *shp, int shmflg);
1876int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
1877int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
1878int security_sem_alloc(struct sem_array *sma);
1879void security_sem_free(struct sem_array *sma);
1880int security_sem_associate(struct sem_array *sma, int semflg);
1881int security_sem_semctl(struct sem_array *sma, int cmd);
1882int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1883 unsigned nsops, int alter);
Eric Paris7b41b172008-04-23 14:10:25 -04001884void security_d_instantiate(struct dentry *dentry, struct inode *inode);
James Morris20510f22007-10-16 23:31:32 -07001885int security_getprocattr(struct task_struct *p, char *name, char **value);
1886int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
1887int security_netlink_send(struct sock *sk, struct sk_buff *skb);
David Quigley746df9b2013-05-22 12:50:35 -04001888int security_ismaclabel(const char *name);
James Morris20510f22007-10-16 23:31:32 -07001889int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
David Howells7bf570d2008-04-29 20:52:51 +01001890int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
James Morris20510f22007-10-16 23:31:32 -07001891void security_release_secctx(char *secdata, u32 seclen);
1892
David P. Quigley1ee65e32009-09-03 14:25:57 -04001893int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
1894int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
1895int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001896#else /* CONFIG_SECURITY */
Eric Parise0007522008-03-05 10:31:54 -05001897struct security_mnt_opts {
1898};
1899
1900static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
1901{
1902}
1903
1904static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
1905{
1906}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001907
1908/*
1909 * This is the default capabilities functionality. Most of these functions
1910 * are just stubbed out, but a few must call the proper capable code.
1911 */
1912
1913static inline int security_init(void)
1914{
1915 return 0;
1916}
1917
Ingo Molnar9e488582009-05-07 19:26:19 +10001918static inline int security_ptrace_access_check(struct task_struct *child,
David Howells5cd9c582008-08-14 11:37:28 +01001919 unsigned int mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001920{
Ingo Molnar9e488582009-05-07 19:26:19 +10001921 return cap_ptrace_access_check(child, mode);
David Howells5cd9c582008-08-14 11:37:28 +01001922}
1923
Alexander Beregalov5e186b52008-08-17 05:34:20 +04001924static inline int security_ptrace_traceme(struct task_struct *parent)
David Howells5cd9c582008-08-14 11:37:28 +01001925{
1926 return cap_ptrace_traceme(parent);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001927}
1928
Eric Paris7b41b172008-04-23 14:10:25 -04001929static inline int security_capget(struct task_struct *target,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001930 kernel_cap_t *effective,
1931 kernel_cap_t *inheritable,
1932 kernel_cap_t *permitted)
1933{
Eric Paris7b41b172008-04-23 14:10:25 -04001934 return cap_capget(target, effective, inheritable, permitted);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001935}
1936
David Howellsd84f4f92008-11-14 10:39:23 +11001937static inline int security_capset(struct cred *new,
1938 const struct cred *old,
1939 const kernel_cap_t *effective,
1940 const kernel_cap_t *inheritable,
1941 const kernel_cap_t *permitted)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001942{
David Howellsd84f4f92008-11-14 10:39:23 +11001943 return cap_capset(new, old, effective, inheritable, permitted);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001944}
1945
Eric Parisb7e724d2012-01-03 12:25:15 -05001946static inline int security_capable(const struct cred *cred,
1947 struct user_namespace *ns, int cap)
Chris Wright12b59892006-03-25 03:07:41 -08001948{
Eric Paris6a9de492012-01-03 12:25:14 -05001949 return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT);
Eric Paris06112162008-11-11 22:02:50 +11001950}
1951
Eric Parisc7eba4a2012-01-03 12:25:15 -05001952static inline int security_capable_noaudit(const struct cred *cred,
1953 struct user_namespace *ns, int cap) {
1954 return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
Chris Wright12b59892006-03-25 03:07:41 -08001955}
1956
Eric Paris7b41b172008-04-23 14:10:25 -04001957static inline int security_quotactl(int cmds, int type, int id,
1958 struct super_block *sb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001959{
1960 return 0;
1961}
1962
Eric Paris7b41b172008-04-23 14:10:25 -04001963static inline int security_quota_on(struct dentry *dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001964{
1965 return 0;
1966}
1967
Eric Paris12b30522010-11-15 18:36:29 -05001968static inline int security_syslog(int type)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001969{
Eric Paris12b30522010-11-15 18:36:29 -05001970 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001971}
1972
Richard Cochran1e6d7672011-02-01 13:50:58 +00001973static inline int security_settime(const struct timespec *ts,
1974 const struct timezone *tz)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001975{
1976 return cap_settime(ts, tz);
1977}
1978
Alan Cox34b4e4a2007-08-22 14:01:28 -07001979static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
1980{
1981 return cap_vm_enough_memory(mm, pages);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001982}
1983
David Howellsa6f76f22008-11-14 10:39:24 +11001984static inline int security_bprm_set_creds(struct linux_binprm *bprm)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001985{
David Howellsa6f76f22008-11-14 10:39:24 +11001986 return cap_bprm_set_creds(bprm);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001987}
1988
Eric Paris7b41b172008-04-23 14:10:25 -04001989static inline int security_bprm_check(struct linux_binprm *bprm)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001990{
1991 return 0;
1992}
1993
David Howellsa6f76f22008-11-14 10:39:24 +11001994static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
1995{
1996}
1997
1998static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
1999{
2000}
2001
Eric Paris7b41b172008-04-23 14:10:25 -04002002static inline int security_bprm_secureexec(struct linux_binprm *bprm)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002003{
2004 return cap_bprm_secureexec(bprm);
2005}
2006
Eric Paris7b41b172008-04-23 14:10:25 -04002007static inline int security_sb_alloc(struct super_block *sb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002008{
2009 return 0;
2010}
2011
Eric Paris7b41b172008-04-23 14:10:25 -04002012static inline void security_sb_free(struct super_block *sb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002013{ }
2014
Eric Paris7b41b172008-04-23 14:10:25 -04002015static inline int security_sb_copy_data(char *orig, char *copy)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002016{
2017 return 0;
2018}
2019
Eric Parisff36fe22011-03-03 16:09:14 -05002020static inline int security_sb_remount(struct super_block *sb, void *data)
2021{
2022 return 0;
2023}
2024
James Morris12204e22008-12-19 10:44:42 +11002025static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002026{
2027 return 0;
2028}
2029
Eric Paris2069f452008-07-04 09:47:13 +10002030static inline int security_sb_show_options(struct seq_file *m,
2031 struct super_block *sb)
2032{
2033 return 0;
2034}
2035
Eric Paris7b41b172008-04-23 14:10:25 -04002036static inline int security_sb_statfs(struct dentry *dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002037{
2038 return 0;
2039}
2040
Al Viro808d4e32012-10-11 11:42:01 -04002041static inline int security_sb_mount(const char *dev_name, struct path *path,
2042 const char *type, unsigned long flags,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002043 void *data)
2044{
2045 return 0;
2046}
2047
Eric Paris7b41b172008-04-23 14:10:25 -04002048static inline int security_sb_umount(struct vfsmount *mnt, int flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002049{
2050 return 0;
2051}
2052
Eric Paris7b41b172008-04-23 14:10:25 -04002053static inline int security_sb_pivotroot(struct path *old_path,
2054 struct path *new_path)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002055{
2056 return 0;
2057}
2058
Eric Parise0007522008-03-05 10:31:54 -05002059static inline int security_sb_set_mnt_opts(struct super_block *sb,
David Quigley649f6e72013-05-22 12:50:36 -04002060 struct security_mnt_opts *opts,
2061 unsigned long kern_flags,
2062 unsigned long *set_kern_flags)
Eric Parise0007522008-03-05 10:31:54 -05002063{
2064 return 0;
2065}
2066
Jeff Layton094f7b62013-04-01 08:14:24 -04002067static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
Eric Parise0007522008-03-05 10:31:54 -05002068 struct super_block *newsb)
Jeff Layton094f7b62013-04-01 08:14:24 -04002069{
2070 return 0;
2071}
Eric Parise0007522008-03-05 10:31:54 -05002072
2073static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
2074{
2075 return 0;
2076}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002077
Eric Paris7b41b172008-04-23 14:10:25 -04002078static inline int security_inode_alloc(struct inode *inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002079{
2080 return 0;
2081}
2082
Eric Paris7b41b172008-04-23 14:10:25 -04002083static inline void security_inode_free(struct inode *inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002084{ }
Stephen Smalley5e41ff92005-09-09 13:01:35 -07002085
David Quigleyd47be3d2013-05-22 12:50:34 -04002086static inline int security_dentry_init_security(struct dentry *dentry,
2087 int mode,
2088 struct qstr *name,
2089 void **ctx,
2090 u32 *ctxlen)
2091{
2092 return -EOPNOTSUPP;
2093}
2094
2095
Eric Paris7b41b172008-04-23 14:10:25 -04002096static inline int security_inode_init_security(struct inode *inode,
Stephen Smalley5e41ff92005-09-09 13:01:35 -07002097 struct inode *dir,
Eric Paris2a7dba32011-02-01 11:05:39 -05002098 const struct qstr *qstr,
Andrew Morton1933ca82011-11-15 15:11:44 -08002099 const initxattrs initxattrs,
Mimi Zohar9d8f13b2011-06-06 15:29:25 -04002100 void *fs_data)
Stephen Smalley5e41ff92005-09-09 13:01:35 -07002101{
Mimi Zohar1e39f382011-08-15 09:09:16 -04002102 return 0;
Stephen Smalley5e41ff92005-09-09 13:01:35 -07002103}
Eric Paris7b41b172008-04-23 14:10:25 -04002104
Mimi Zohar1e39f382011-08-15 09:09:16 -04002105static inline int security_old_inode_init_security(struct inode *inode,
2106 struct inode *dir,
2107 const struct qstr *qstr,
Tetsuo Handa95489062013-07-25 05:44:02 +09002108 const char **name,
2109 void **value, size_t *len)
Mimi Zohare1c9b232011-08-11 00:22:51 -04002110{
Jan Kara30e05322012-01-03 13:14:29 +01002111 return -EOPNOTSUPP;
Mimi Zohare1c9b232011-08-11 00:22:51 -04002112}
2113
Eric Paris7b41b172008-04-23 14:10:25 -04002114static inline int security_inode_create(struct inode *dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002115 struct dentry *dentry,
Al Viro4acdaf22011-07-26 01:42:34 -04002116 umode_t mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002117{
2118 return 0;
2119}
2120
Eric Paris7b41b172008-04-23 14:10:25 -04002121static inline int security_inode_link(struct dentry *old_dentry,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002122 struct inode *dir,
2123 struct dentry *new_dentry)
2124{
2125 return 0;
2126}
2127
Eric Paris7b41b172008-04-23 14:10:25 -04002128static inline int security_inode_unlink(struct inode *dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002129 struct dentry *dentry)
2130{
2131 return 0;
2132}
2133
Eric Paris7b41b172008-04-23 14:10:25 -04002134static inline int security_inode_symlink(struct inode *dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002135 struct dentry *dentry,
2136 const char *old_name)
2137{
2138 return 0;
2139}
2140
Eric Paris7b41b172008-04-23 14:10:25 -04002141static inline int security_inode_mkdir(struct inode *dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002142 struct dentry *dentry,
2143 int mode)
2144{
2145 return 0;
2146}
2147
Eric Paris7b41b172008-04-23 14:10:25 -04002148static inline int security_inode_rmdir(struct inode *dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002149 struct dentry *dentry)
2150{
2151 return 0;
2152}
2153
Eric Paris7b41b172008-04-23 14:10:25 -04002154static inline int security_inode_mknod(struct inode *dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002155 struct dentry *dentry,
2156 int mode, dev_t dev)
2157{
2158 return 0;
2159}
2160
Eric Paris7b41b172008-04-23 14:10:25 -04002161static inline int security_inode_rename(struct inode *old_dir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002162 struct dentry *old_dentry,
2163 struct inode *new_dir,
2164 struct dentry *new_dentry)
2165{
2166 return 0;
2167}
2168
Eric Paris7b41b172008-04-23 14:10:25 -04002169static inline int security_inode_readlink(struct dentry *dentry)
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_follow_link(struct dentry *dentry,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002175 struct nameidata *nd)
2176{
2177 return 0;
2178}
2179
Al Virob77b0642008-07-17 09:37:02 -04002180static inline int security_inode_permission(struct inode *inode, int mask)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002181{
2182 return 0;
2183}
2184
Eric Paris7b41b172008-04-23 14:10:25 -04002185static inline int security_inode_setattr(struct dentry *dentry,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002186 struct iattr *attr)
2187{
2188 return 0;
2189}
2190
Eric Paris7b41b172008-04-23 14:10:25 -04002191static inline int security_inode_getattr(struct vfsmount *mnt,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002192 struct dentry *dentry)
2193{
2194 return 0;
2195}
2196
David Howells8f0cfa52008-04-29 00:59:41 -07002197static inline int security_inode_setxattr(struct dentry *dentry,
2198 const char *name, const void *value, size_t size, int flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002199{
2200 return cap_inode_setxattr(dentry, name, value, size, flags);
2201}
2202
David Howells8f0cfa52008-04-29 00:59:41 -07002203static inline void security_inode_post_setxattr(struct dentry *dentry,
2204 const char *name, const void *value, size_t size, int flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002205{ }
2206
David Howells8f0cfa52008-04-29 00:59:41 -07002207static inline int security_inode_getxattr(struct dentry *dentry,
2208 const char *name)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002209{
2210 return 0;
2211}
2212
Eric Paris7b41b172008-04-23 14:10:25 -04002213static inline int security_inode_listxattr(struct dentry *dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002214{
2215 return 0;
2216}
2217
David Howells8f0cfa52008-04-29 00:59:41 -07002218static inline int security_inode_removexattr(struct dentry *dentry,
2219 const char *name)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002220{
2221 return cap_inode_removexattr(dentry, name);
2222}
2223
Serge E. Hallynb5376772007-10-16 23:31:36 -07002224static inline int security_inode_need_killpriv(struct dentry *dentry)
2225{
2226 return cap_inode_need_killpriv(dentry);
2227}
2228
2229static inline int security_inode_killpriv(struct dentry *dentry)
2230{
2231 return cap_inode_killpriv(dentry);
2232}
2233
David P. Quigley42492592008-02-04 22:29:39 -08002234static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002235{
2236 return -EOPNOTSUPP;
2237}
2238
2239static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
2240{
2241 return -EOPNOTSUPP;
2242}
2243
2244static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
2245{
2246 return 0;
2247}
2248
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02002249static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
2250{
2251 *secid = 0;
2252}
2253
Eric Paris7b41b172008-04-23 14:10:25 -04002254static inline int security_file_permission(struct file *file, int mask)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002255{
2256 return 0;
2257}
2258
Eric Paris7b41b172008-04-23 14:10:25 -04002259static inline int security_file_alloc(struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002260{
2261 return 0;
2262}
2263
Eric Paris7b41b172008-04-23 14:10:25 -04002264static inline void security_file_free(struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002265{ }
2266
Eric Paris7b41b172008-04-23 14:10:25 -04002267static inline int security_file_ioctl(struct file *file, unsigned int cmd,
2268 unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002269{
2270 return 0;
2271}
2272
Al Viro8b3ec682012-05-30 17:11:23 -04002273static inline int security_mmap_file(struct file *file, unsigned long prot,
Al Viroe5467852012-05-30 13:30:51 -04002274 unsigned long flags)
2275{
2276 return 0;
2277}
2278
2279static inline int security_mmap_addr(unsigned long addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002280{
Al Virod0077942012-05-30 13:11:37 -04002281 return cap_mmap_addr(addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002282}
2283
Eric Paris7b41b172008-04-23 14:10:25 -04002284static inline int security_file_mprotect(struct vm_area_struct *vma,
2285 unsigned long reqprot,
2286 unsigned long prot)
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_lock(struct file *file, unsigned int cmd)
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_fcntl(struct file *file, unsigned int cmd,
2297 unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002298{
2299 return 0;
2300}
2301
Eric Paris7b41b172008-04-23 14:10:25 -04002302static inline int security_file_set_fowner(struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002303{
2304 return 0;
2305}
2306
Eric Paris7b41b172008-04-23 14:10:25 -04002307static inline int security_file_send_sigiotask(struct task_struct *tsk,
2308 struct fown_struct *fown,
2309 int sig)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002310{
2311 return 0;
2312}
2313
Eric Paris7b41b172008-04-23 14:10:25 -04002314static inline int security_file_receive(struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002315{
2316 return 0;
2317}
2318
Eric Paris83d49852012-04-04 13:45:40 -04002319static inline int security_file_open(struct file *file,
2320 const struct cred *cred)
Yuichi Nakamura788e7dd2007-09-14 09:27:07 +09002321{
2322 return 0;
2323}
2324
Eric Paris7b41b172008-04-23 14:10:25 -04002325static inline int security_task_create(unsigned long clone_flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002326{
2327 return 0;
2328}
2329
Kees Cook1a2a4d02011-12-21 12:17:03 -08002330static inline void security_task_free(struct task_struct *task)
2331{ }
2332
David Howells945af7c2009-09-04 09:19:48 +01002333static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
2334{
2335 return 0;
2336}
David Howellsee18d642009-09-02 09:14:21 +01002337
David Howellsd84f4f92008-11-14 10:39:23 +11002338static inline void security_cred_free(struct cred *cred)
2339{ }
2340
2341static inline int security_prepare_creds(struct cred *new,
2342 const struct cred *old,
2343 gfp_t gfp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002344{
2345 return 0;
2346}
2347
David Howellsee18d642009-09-02 09:14:21 +01002348static inline void security_transfer_creds(struct cred *new,
2349 const struct cred *old)
2350{
2351}
2352
David Howells3a3b7ce2008-11-14 10:39:28 +11002353static inline int security_kernel_act_as(struct cred *cred, u32 secid)
2354{
2355 return 0;
2356}
2357
2358static inline int security_kernel_create_files_as(struct cred *cred,
2359 struct inode *inode)
2360{
2361 return 0;
2362}
2363
Eric Parisdd8dbf22009-11-03 16:35:32 +11002364static inline int security_kernel_module_request(char *kmod_name)
Eric Paris91884992009-08-13 09:44:57 -04002365{
2366 return 0;
2367}
2368
Kees Cook2e72d512012-10-16 07:32:07 +10302369static inline int security_kernel_module_from_file(struct file *file)
2370{
2371 return 0;
2372}
2373
David Howellsd84f4f92008-11-14 10:39:23 +11002374static inline int security_task_fix_setuid(struct cred *new,
2375 const struct cred *old,
2376 int flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002377{
David Howellsd84f4f92008-11-14 10:39:23 +11002378 return cap_task_fix_setuid(new, old, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002379}
2380
Eric Paris7b41b172008-04-23 14:10:25 -04002381static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002382{
2383 return 0;
2384}
2385
Eric Paris7b41b172008-04-23 14:10:25 -04002386static inline int security_task_getpgid(struct task_struct *p)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002387{
2388 return 0;
2389}
2390
Eric Paris7b41b172008-04-23 14:10:25 -04002391static inline int security_task_getsid(struct task_struct *p)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002392{
2393 return 0;
2394}
2395
Eric Paris7b41b172008-04-23 14:10:25 -04002396static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02002397{
2398 *secid = 0;
2399}
David Quigleyf9008e42006-06-30 01:55:46 -07002400
Eric Paris7b41b172008-04-23 14:10:25 -04002401static inline int security_task_setnice(struct task_struct *p, int nice)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002402{
Serge E. Hallynb5376772007-10-16 23:31:36 -07002403 return cap_task_setnice(p, nice);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002404}
2405
Eric Paris7b41b172008-04-23 14:10:25 -04002406static inline int security_task_setioprio(struct task_struct *p, int ioprio)
James Morris03e68062006-06-23 02:03:58 -07002407{
Serge E. Hallynb5376772007-10-16 23:31:36 -07002408 return cap_task_setioprio(p, ioprio);
James Morris03e68062006-06-23 02:03:58 -07002409}
2410
Eric Paris7b41b172008-04-23 14:10:25 -04002411static inline int security_task_getioprio(struct task_struct *p)
David Quigleya1836a42006-06-30 01:55:49 -07002412{
2413 return 0;
2414}
2415
Jiri Slaby8fd00b42009-08-26 18:41:16 +02002416static inline int security_task_setrlimit(struct task_struct *p,
2417 unsigned int resource,
Eric Paris7b41b172008-04-23 14:10:25 -04002418 struct rlimit *new_rlim)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002419{
2420 return 0;
2421}
2422
KOSAKI Motohirob0ae1982010-10-15 04:21:18 +09002423static inline int security_task_setscheduler(struct task_struct *p)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002424{
KOSAKI Motohirob0ae1982010-10-15 04:21:18 +09002425 return cap_task_setscheduler(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002426}
2427
Eric Paris7b41b172008-04-23 14:10:25 -04002428static inline int security_task_getscheduler(struct task_struct *p)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002429{
2430 return 0;
2431}
2432
Eric Paris7b41b172008-04-23 14:10:25 -04002433static inline int security_task_movememory(struct task_struct *p)
David Quigley35601542006-06-23 02:04:01 -07002434{
2435 return 0;
2436}
2437
Eric Paris7b41b172008-04-23 14:10:25 -04002438static inline int security_task_kill(struct task_struct *p,
2439 struct siginfo *info, int sig,
2440 u32 secid)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002441{
Serge Hallynaedb60a2008-02-29 15:14:57 +00002442 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002443}
2444
Eric Paris7b41b172008-04-23 14:10:25 -04002445static inline int security_task_wait(struct task_struct *p)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002446{
2447 return 0;
2448}
2449
Eric Paris7b41b172008-04-23 14:10:25 -04002450static inline int security_task_prctl(int option, unsigned long arg2,
2451 unsigned long arg3,
2452 unsigned long arg4,
David Howellsd84f4f92008-11-14 10:39:23 +11002453 unsigned long arg5)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002454{
David Howellsd84f4f92008-11-14 10:39:23 +11002455 return cap_task_prctl(option, arg2, arg3, arg3, arg5);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002456}
2457
2458static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
2459{ }
2460
Eric Paris7b41b172008-04-23 14:10:25 -04002461static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
2462 short flag)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002463{
2464 return 0;
2465}
2466
Ahmed S. Darwish8a076192008-03-01 21:51:09 +02002467static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
2468{
2469 *secid = 0;
2470}
2471
Eric Paris7b41b172008-04-23 14:10:25 -04002472static inline int security_msg_msg_alloc(struct msg_msg *msg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002473{
2474 return 0;
2475}
2476
Eric Paris7b41b172008-04-23 14:10:25 -04002477static inline void security_msg_msg_free(struct msg_msg *msg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002478{ }
2479
Eric Paris7b41b172008-04-23 14:10:25 -04002480static inline int security_msg_queue_alloc(struct msg_queue *msq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002481{
2482 return 0;
2483}
2484
Eric Paris7b41b172008-04-23 14:10:25 -04002485static inline void security_msg_queue_free(struct msg_queue *msq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002486{ }
2487
Eric Paris7b41b172008-04-23 14:10:25 -04002488static inline int security_msg_queue_associate(struct msg_queue *msq,
2489 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_msgctl(struct msg_queue *msq, int cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002495{
2496 return 0;
2497}
2498
Eric Paris7b41b172008-04-23 14:10:25 -04002499static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
2500 struct msg_msg *msg, int msqflg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002501{
2502 return 0;
2503}
2504
Eric Paris7b41b172008-04-23 14:10:25 -04002505static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
2506 struct msg_msg *msg,
2507 struct task_struct *target,
2508 long type, int mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002509{
2510 return 0;
2511}
2512
Eric Paris7b41b172008-04-23 14:10:25 -04002513static inline int security_shm_alloc(struct shmid_kernel *shp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002514{
2515 return 0;
2516}
2517
Eric Paris7b41b172008-04-23 14:10:25 -04002518static inline void security_shm_free(struct shmid_kernel *shp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002519{ }
2520
Eric Paris7b41b172008-04-23 14:10:25 -04002521static inline int security_shm_associate(struct shmid_kernel *shp,
2522 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_shm_shmctl(struct shmid_kernel *shp, int cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002528{
2529 return 0;
2530}
2531
Eric Paris7b41b172008-04-23 14:10:25 -04002532static inline int security_shm_shmat(struct shmid_kernel *shp,
2533 char __user *shmaddr, int shmflg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002534{
2535 return 0;
2536}
2537
Eric Paris7b41b172008-04-23 14:10:25 -04002538static inline int security_sem_alloc(struct sem_array *sma)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002539{
2540 return 0;
2541}
2542
Eric Paris7b41b172008-04-23 14:10:25 -04002543static inline void security_sem_free(struct sem_array *sma)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002544{ }
2545
Eric Paris7b41b172008-04-23 14:10:25 -04002546static inline int security_sem_associate(struct sem_array *sma, int semflg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002547{
2548 return 0;
2549}
2550
Eric Paris7b41b172008-04-23 14:10:25 -04002551static inline int security_sem_semctl(struct sem_array *sma, int cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002552{
2553 return 0;
2554}
2555
Eric Paris7b41b172008-04-23 14:10:25 -04002556static inline int security_sem_semop(struct sem_array *sma,
2557 struct sembuf *sops, unsigned nsops,
2558 int alter)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002559{
2560 return 0;
2561}
2562
Eric Paris7b41b172008-04-23 14:10:25 -04002563static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002564{ }
2565
Al Viro04ff9702007-03-12 16:17:58 +00002566static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002567{
2568 return -EINVAL;
2569}
2570
2571static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2572{
2573 return -EINVAL;
2574}
2575
Eric Paris7b41b172008-04-23 14:10:25 -04002576static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002577{
Eric Paris7b41b172008-04-23 14:10:25 -04002578 return cap_netlink_send(sk, skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002579}
2580
David Quigley746df9b2013-05-22 12:50:35 -04002581static inline int security_ismaclabel(const char *name)
2582{
2583 return 0;
2584}
2585
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07002586static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2587{
2588 return -EOPNOTSUPP;
2589}
2590
David Howells7bf570d2008-04-29 20:52:51 +01002591static inline int security_secctx_to_secid(const char *secdata,
David Howells63cb3442008-01-15 23:47:35 +00002592 u32 seclen,
2593 u32 *secid)
2594{
2595 return -EOPNOTSUPP;
2596}
2597
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07002598static inline void security_release_secctx(char *secdata, u32 seclen)
2599{
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07002600}
David P. Quigley1ee65e32009-09-03 14:25:57 -04002601
2602static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
2603{
2604 return -EOPNOTSUPP;
2605}
2606static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
2607{
2608 return -EOPNOTSUPP;
2609}
2610static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
2611{
2612 return -EOPNOTSUPP;
2613}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002614#endif /* CONFIG_SECURITY */
2615
2616#ifdef CONFIG_SECURITY_NETWORK
Linus Torvalds1da177e2005-04-16 15:20:36 -07002617
David S. Miller3610cda2011-01-05 15:38:53 -08002618int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
James Morris20510f22007-10-16 23:31:32 -07002619int security_unix_may_send(struct socket *sock, struct socket *other);
2620int security_socket_create(int family, int type, int protocol, int kern);
2621int security_socket_post_create(struct socket *sock, int family,
2622 int type, int protocol, int kern);
2623int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
2624int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
2625int security_socket_listen(struct socket *sock, int backlog);
2626int security_socket_accept(struct socket *sock, struct socket *newsock);
James Morris20510f22007-10-16 23:31:32 -07002627int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
2628int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2629 int size, int flags);
2630int security_socket_getsockname(struct socket *sock);
2631int security_socket_getpeername(struct socket *sock);
2632int security_socket_getsockopt(struct socket *sock, int level, int optname);
2633int security_socket_setsockopt(struct socket *sock, int level, int optname);
2634int security_socket_shutdown(struct socket *sock, int how);
2635int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
2636int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2637 int __user *optlen, unsigned len);
2638int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
2639int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
2640void security_sk_free(struct sock *sk);
2641void security_sk_clone(const struct sock *sk, struct sock *newsk);
2642void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
2643void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
2644void security_sock_graft(struct sock*sk, struct socket *parent);
2645int security_inet_conn_request(struct sock *sk,
2646 struct sk_buff *skb, struct request_sock *req);
2647void security_inet_csk_clone(struct sock *newsk,
2648 const struct request_sock *req);
2649void security_inet_conn_established(struct sock *sk,
2650 struct sk_buff *skb);
Eric Paris2606fd12010-10-13 16:24:41 -04002651int security_secmark_relabel_packet(u32 secid);
2652void security_secmark_refcount_inc(void);
2653void security_secmark_refcount_dec(void);
Paul Moore5dbbaf22013-01-14 07:12:19 +00002654int security_tun_dev_alloc_security(void **security);
2655void security_tun_dev_free_security(void *security);
Paul Moore2b980db2009-08-28 18:12:43 -04002656int security_tun_dev_create(void);
Paul Moore5dbbaf22013-01-14 07:12:19 +00002657int security_tun_dev_attach_queue(void *security);
2658int security_tun_dev_attach(struct sock *sk, void *security);
2659int security_tun_dev_open(void *security);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002660
Eric Dumazetca10b9e2013-04-08 17:58:11 +00002661void security_skb_owned_by(struct sk_buff *skb, struct sock *sk);
2662
Linus Torvalds1da177e2005-04-16 15:20:36 -07002663#else /* CONFIG_SECURITY_NETWORK */
David S. Miller3610cda2011-01-05 15:38:53 -08002664static inline int security_unix_stream_connect(struct sock *sock,
2665 struct sock *other,
Eric Paris7b41b172008-04-23 14:10:25 -04002666 struct sock *newsk)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002667{
2668 return 0;
2669}
2670
Eric Paris7b41b172008-04-23 14:10:25 -04002671static inline int security_unix_may_send(struct socket *sock,
2672 struct socket *other)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002673{
2674 return 0;
2675}
2676
Eric Paris7b41b172008-04-23 14:10:25 -04002677static inline int security_socket_create(int family, int type,
2678 int protocol, int kern)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002679{
2680 return 0;
2681}
2682
Eric Paris7b41b172008-04-23 14:10:25 -04002683static inline int security_socket_post_create(struct socket *sock,
Venkat Yekkirala7420ed22006-08-04 23:17:57 -07002684 int family,
2685 int type,
2686 int protocol, int kern)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002687{
Venkat Yekkirala7420ed22006-08-04 23:17:57 -07002688 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002689}
2690
Eric Paris7b41b172008-04-23 14:10:25 -04002691static inline int security_socket_bind(struct socket *sock,
2692 struct sockaddr *address,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002693 int addrlen)
2694{
2695 return 0;
2696}
2697
Eric Paris7b41b172008-04-23 14:10:25 -04002698static inline int security_socket_connect(struct socket *sock,
2699 struct sockaddr *address,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002700 int addrlen)
2701{
2702 return 0;
2703}
2704
Eric Paris7b41b172008-04-23 14:10:25 -04002705static inline int security_socket_listen(struct socket *sock, int backlog)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002706{
2707 return 0;
2708}
2709
Eric Paris7b41b172008-04-23 14:10:25 -04002710static inline int security_socket_accept(struct socket *sock,
2711 struct socket *newsock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002712{
2713 return 0;
2714}
2715
Eric Paris7b41b172008-04-23 14:10:25 -04002716static inline int security_socket_sendmsg(struct socket *sock,
2717 struct msghdr *msg, int size)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002718{
2719 return 0;
2720}
2721
Eric Paris7b41b172008-04-23 14:10:25 -04002722static inline int security_socket_recvmsg(struct socket *sock,
2723 struct msghdr *msg, int size,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002724 int flags)
2725{
2726 return 0;
2727}
2728
Eric Paris7b41b172008-04-23 14:10:25 -04002729static inline int security_socket_getsockname(struct socket *sock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002730{
2731 return 0;
2732}
2733
Eric Paris7b41b172008-04-23 14:10:25 -04002734static inline int security_socket_getpeername(struct socket *sock)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002735{
2736 return 0;
2737}
2738
Eric Paris7b41b172008-04-23 14:10:25 -04002739static inline int security_socket_getsockopt(struct socket *sock,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002740 int level, int optname)
2741{
2742 return 0;
2743}
2744
Eric Paris7b41b172008-04-23 14:10:25 -04002745static inline int security_socket_setsockopt(struct socket *sock,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002746 int level, int optname)
2747{
2748 return 0;
2749}
2750
Eric Paris7b41b172008-04-23 14:10:25 -04002751static inline int security_socket_shutdown(struct socket *sock, int how)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002752{
2753 return 0;
2754}
Eric Paris7b41b172008-04-23 14:10:25 -04002755static inline int security_sock_rcv_skb(struct sock *sk,
2756 struct sk_buff *skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002757{
2758 return 0;
2759}
2760
Catherine Zhang2c7946a2006-03-20 22:41:23 -08002761static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2762 int __user *optlen, unsigned len)
2763{
2764 return -ENOPROTOOPT;
2765}
2766
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07002767static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002768{
2769 return -ENOPROTOOPT;
2770}
2771
Al Virodd0fc662005-10-07 07:46:04 +01002772static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002773{
2774 return 0;
2775}
2776
2777static inline void security_sk_free(struct sock *sk)
2778{
2779}
Trent Jaegerdf718372005-12-13 23:12:27 -08002780
Venkat Yekkirala892c1412006-08-04 23:08:56 -07002781static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
2782{
2783}
2784
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07002785static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
Trent Jaegerdf718372005-12-13 23:12:27 -08002786{
Trent Jaegerdf718372005-12-13 23:12:27 -08002787}
Venkat Yekkirala4237c752006-07-24 23:32:50 -07002788
2789static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2790{
2791}
2792
Eric Paris7b41b172008-04-23 14:10:25 -04002793static inline void security_sock_graft(struct sock *sk, struct socket *parent)
Venkat Yekkirala4237c752006-07-24 23:32:50 -07002794{
2795}
2796
2797static inline int security_inet_conn_request(struct sock *sk,
2798 struct sk_buff *skb, struct request_sock *req)
2799{
2800 return 0;
2801}
2802
2803static inline void security_inet_csk_clone(struct sock *newsk,
2804 const struct request_sock *req)
2805{
2806}
Venkat Yekkirala6b877692006-11-08 17:04:09 -06002807
2808static inline void security_inet_conn_established(struct sock *sk,
2809 struct sk_buff *skb)
2810{
2811}
Paul Moore2b980db2009-08-28 18:12:43 -04002812
Eric Paris2606fd12010-10-13 16:24:41 -04002813static inline int security_secmark_relabel_packet(u32 secid)
2814{
2815 return 0;
2816}
2817
2818static inline void security_secmark_refcount_inc(void)
2819{
2820}
2821
2822static inline void security_secmark_refcount_dec(void)
2823{
2824}
2825
Paul Moore5dbbaf22013-01-14 07:12:19 +00002826static inline int security_tun_dev_alloc_security(void **security)
2827{
2828 return 0;
2829}
2830
2831static inline void security_tun_dev_free_security(void *security)
2832{
2833}
2834
Paul Moore2b980db2009-08-28 18:12:43 -04002835static inline int security_tun_dev_create(void)
2836{
2837 return 0;
2838}
2839
Paul Moore5dbbaf22013-01-14 07:12:19 +00002840static inline int security_tun_dev_attach_queue(void *security)
Paul Moore2b980db2009-08-28 18:12:43 -04002841{
Paul Moore5dbbaf22013-01-14 07:12:19 +00002842 return 0;
Paul Moore2b980db2009-08-28 18:12:43 -04002843}
2844
Paul Moore5dbbaf22013-01-14 07:12:19 +00002845static inline int security_tun_dev_attach(struct sock *sk, void *security)
2846{
2847 return 0;
2848}
2849
2850static inline int security_tun_dev_open(void *security)
Paul Moore2b980db2009-08-28 18:12:43 -04002851{
2852 return 0;
2853}
Eric Dumazetca10b9e2013-04-08 17:58:11 +00002854
2855static inline void security_skb_owned_by(struct sk_buff *skb, struct sock *sk)
2856{
2857}
2858
Linus Torvalds1da177e2005-04-16 15:20:36 -07002859#endif /* CONFIG_SECURITY_NETWORK */
2860
Trent Jaegerdf718372005-12-13 23:12:27 -08002861#ifdef CONFIG_SECURITY_NETWORK_XFRM
Venkat Yekkiralacb969f02006-07-24 23:32:20 -07002862
Nikolay Aleksandrov52a4c642014-03-07 12:44:19 +01002863int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
2864 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
Paul Moore03e1ad72008-04-12 19:07:52 -07002865int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
2866void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
2867int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
James Morris20510f22007-10-16 23:31:32 -07002868int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
2869int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2870 struct xfrm_sec_ctx *polsec, u32 secid);
2871int security_xfrm_state_delete(struct xfrm_state *x);
2872void security_xfrm_state_free(struct xfrm_state *x);
Paul Moore03e1ad72008-04-12 19:07:52 -07002873int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
James Morris20510f22007-10-16 23:31:32 -07002874int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
David S. Millere33f7702011-02-22 18:13:15 -08002875 struct xfrm_policy *xp,
2876 const struct flowi *fl);
James Morris20510f22007-10-16 23:31:32 -07002877int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
2878void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
Trent Jaegerdf718372005-12-13 23:12:27 -08002879
Trent Jaegerdf718372005-12-13 23:12:27 -08002880#else /* CONFIG_SECURITY_NETWORK_XFRM */
James Morris20510f22007-10-16 23:31:32 -07002881
Nikolay Aleksandrov52a4c642014-03-07 12:44:19 +01002882static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
2883 struct xfrm_user_sec_ctx *sec_ctx,
2884 gfp_t gfp)
Trent Jaegerdf718372005-12-13 23:12:27 -08002885{
2886 return 0;
2887}
2888
Paul Moore03e1ad72008-04-12 19:07:52 -07002889static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
Trent Jaegerdf718372005-12-13 23:12:27 -08002890{
2891 return 0;
2892}
2893
Paul Moore03e1ad72008-04-12 19:07:52 -07002894static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
Trent Jaegerdf718372005-12-13 23:12:27 -08002895{
2896}
2897
Paul Moore03e1ad72008-04-12 19:07:52 -07002898static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
Catherine Zhangc8c05a82006-06-08 23:39:49 -07002899{
2900 return 0;
2901}
2902
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07002903static inline int security_xfrm_state_alloc(struct xfrm_state *x,
2904 struct xfrm_user_sec_ctx *sec_ctx)
2905{
2906 return 0;
2907}
2908
2909static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2910 struct xfrm_sec_ctx *polsec, u32 secid)
Trent Jaegerdf718372005-12-13 23:12:27 -08002911{
2912 return 0;
2913}
2914
2915static inline void security_xfrm_state_free(struct xfrm_state *x)
2916{
2917}
2918
David S. Miller6f68dc32006-06-08 23:58:52 -07002919static inline int security_xfrm_state_delete(struct xfrm_state *x)
Catherine Zhangc8c05a82006-06-08 23:39:49 -07002920{
2921 return 0;
2922}
2923
Paul Moore03e1ad72008-04-12 19:07:52 -07002924static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
Trent Jaegerdf718372005-12-13 23:12:27 -08002925{
2926 return 0;
2927}
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07002928
2929static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
David S. Millere33f7702011-02-22 18:13:15 -08002930 struct xfrm_policy *xp, const struct flowi *fl)
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07002931{
2932 return 1;
2933}
2934
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07002935static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07002936{
2937 return 0;
2938}
2939
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07002940static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2941{
2942}
2943
Trent Jaegerdf718372005-12-13 23:12:27 -08002944#endif /* CONFIG_SECURITY_NETWORK_XFRM */
2945
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09002946#ifdef CONFIG_SECURITY_PATH
2947int security_path_unlink(struct path *dir, struct dentry *dentry);
Al Viro4572bef2011-11-21 14:56:21 -05002948int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode);
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09002949int security_path_rmdir(struct path *dir, struct dentry *dentry);
Al Viro04fc66e2011-11-21 14:58:38 -05002950int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode,
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09002951 unsigned int dev);
Tetsuo Handaea0d3ab2010-06-02 13:24:43 +09002952int security_path_truncate(struct path *path);
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09002953int security_path_symlink(struct path *dir, struct dentry *dentry,
2954 const char *old_name);
2955int security_path_link(struct dentry *old_dentry, struct path *new_dir,
2956 struct dentry *new_dentry);
2957int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
2958 struct path *new_dir, struct dentry *new_dentry);
Al Virocdcf1162011-12-08 10:51:53 -05002959int security_path_chmod(struct path *path, umode_t mode);
Eric W. Biedermand2b31ca2012-06-01 16:14:19 -06002960int security_path_chown(struct path *path, kuid_t uid, kgid_t gid);
Tetsuo Handa8b8efb42009-10-04 21:49:48 +09002961int security_path_chroot(struct path *path);
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09002962#else /* CONFIG_SECURITY_PATH */
2963static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
2964{
2965 return 0;
2966}
2967
2968static inline int security_path_mkdir(struct path *dir, struct dentry *dentry,
Al Viro4572bef2011-11-21 14:56:21 -05002969 umode_t mode)
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09002970{
2971 return 0;
2972}
2973
2974static inline int security_path_rmdir(struct path *dir, struct dentry *dentry)
2975{
2976 return 0;
2977}
2978
2979static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
Al Viro04fc66e2011-11-21 14:58:38 -05002980 umode_t mode, unsigned int dev)
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09002981{
2982 return 0;
2983}
2984
Tetsuo Handaea0d3ab2010-06-02 13:24:43 +09002985static inline int security_path_truncate(struct path *path)
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09002986{
2987 return 0;
2988}
2989
2990static inline int security_path_symlink(struct path *dir, struct dentry *dentry,
2991 const char *old_name)
2992{
2993 return 0;
2994}
2995
2996static inline int security_path_link(struct dentry *old_dentry,
2997 struct path *new_dir,
2998 struct dentry *new_dentry)
2999{
3000 return 0;
3001}
3002
3003static inline int security_path_rename(struct path *old_dir,
3004 struct dentry *old_dentry,
3005 struct path *new_dir,
3006 struct dentry *new_dentry)
3007{
3008 return 0;
3009}
Tetsuo Handa89eda062009-10-04 21:49:47 +09003010
Al Virocdcf1162011-12-08 10:51:53 -05003011static inline int security_path_chmod(struct path *path, umode_t mode)
Tetsuo Handa89eda062009-10-04 21:49:47 +09003012{
3013 return 0;
3014}
3015
Eric W. Biedermand2b31ca2012-06-01 16:14:19 -06003016static inline int security_path_chown(struct path *path, kuid_t uid, kgid_t gid)
Tetsuo Handa89eda062009-10-04 21:49:47 +09003017{
3018 return 0;
3019}
Tetsuo Handa8b8efb42009-10-04 21:49:48 +09003020
3021static inline int security_path_chroot(struct path *path)
3022{
3023 return 0;
3024}
Kentaro Takedabe6d3e52008-12-17 13:24:15 +09003025#endif /* CONFIG_SECURITY_PATH */
3026
David Howells29db9192005-10-30 15:02:44 -08003027#ifdef CONFIG_KEYS
3028#ifdef CONFIG_SECURITY
David Howells29db9192005-10-30 15:02:44 -08003029
David Howellsd84f4f92008-11-14 10:39:23 +11003030int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
James Morris20510f22007-10-16 23:31:32 -07003031void security_key_free(struct key *key);
3032int security_key_permission(key_ref_t key_ref,
David Howellsd84f4f92008-11-14 10:39:23 +11003033 const struct cred *cred, key_perm_t perm);
David Howells70a5bb72008-04-29 01:01:26 -07003034int security_key_getsecurity(struct key *key, char **_buffer);
David Howells29db9192005-10-30 15:02:44 -08003035
3036#else
3037
Michael LeMayd7200242006-06-22 14:47:17 -07003038static inline int security_key_alloc(struct key *key,
David Howellsd84f4f92008-11-14 10:39:23 +11003039 const struct cred *cred,
David Howells7e047ef2006-06-26 00:24:50 -07003040 unsigned long flags)
David Howells29db9192005-10-30 15:02:44 -08003041{
3042 return 0;
3043}
3044
3045static inline void security_key_free(struct key *key)
3046{
3047}
3048
3049static inline int security_key_permission(key_ref_t key_ref,
David Howellsd84f4f92008-11-14 10:39:23 +11003050 const struct cred *cred,
David Howells29db9192005-10-30 15:02:44 -08003051 key_perm_t perm)
3052{
3053 return 0;
3054}
3055
David Howells70a5bb72008-04-29 01:01:26 -07003056static inline int security_key_getsecurity(struct key *key, char **_buffer)
3057{
3058 *_buffer = NULL;
3059 return 0;
3060}
3061
David Howells29db9192005-10-30 15:02:44 -08003062#endif
3063#endif /* CONFIG_KEYS */
3064
Ahmed S. Darwish03d37d22008-03-01 22:00:05 +02003065#ifdef CONFIG_AUDIT
3066#ifdef CONFIG_SECURITY
3067int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
3068int security_audit_rule_known(struct audit_krule *krule);
3069int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
3070 struct audit_context *actx);
3071void security_audit_rule_free(void *lsmrule);
3072
3073#else
3074
3075static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
3076 void **lsmrule)
3077{
3078 return 0;
3079}
3080
3081static inline int security_audit_rule_known(struct audit_krule *krule)
3082{
3083 return 0;
3084}
3085
3086static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
3087 void *lsmrule, struct audit_context *actx)
3088{
3089 return 0;
3090}
3091
3092static inline void security_audit_rule_free(void *lsmrule)
3093{ }
3094
3095#endif /* CONFIG_SECURITY */
3096#endif /* CONFIG_AUDIT */
3097
Eric Parisda318942008-08-22 11:35:57 -04003098#ifdef CONFIG_SECURITYFS
3099
Al Viro52ef0c02011-07-26 04:30:04 -04003100extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
Eric Parisda318942008-08-22 11:35:57 -04003101 struct dentry *parent, void *data,
3102 const struct file_operations *fops);
3103extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
3104extern void securityfs_remove(struct dentry *dentry);
3105
3106#else /* CONFIG_SECURITYFS */
3107
3108static inline struct dentry *securityfs_create_dir(const char *name,
3109 struct dentry *parent)
3110{
3111 return ERR_PTR(-ENODEV);
3112}
3113
3114static inline struct dentry *securityfs_create_file(const char *name,
Al Viro52ef0c02011-07-26 04:30:04 -04003115 umode_t mode,
Eric Parisda318942008-08-22 11:35:57 -04003116 struct dentry *parent,
3117 void *data,
3118 const struct file_operations *fops)
3119{
3120 return ERR_PTR(-ENODEV);
3121}
3122
3123static inline void securityfs_remove(struct dentry *dentry)
3124{}
3125
3126#endif
3127
Pekka Enberg3d544f42009-03-24 11:59:23 +02003128#ifdef CONFIG_SECURITY
3129
3130static inline char *alloc_secdata(void)
3131{
3132 return (char *)get_zeroed_page(GFP_KERNEL);
3133}
3134
3135static inline void free_secdata(void *secdata)
3136{
3137 free_page((unsigned long)secdata);
3138}
3139
3140#else
3141
3142static inline char *alloc_secdata(void)
3143{
3144 return (char *)1;
3145}
3146
3147static inline void free_secdata(void *secdata)
3148{ }
3149#endif /* CONFIG_SECURITY */
3150
Kees Cookc6993e42012-09-04 13:32:13 -07003151#ifdef CONFIG_SECURITY_YAMA
3152extern int yama_ptrace_access_check(struct task_struct *child,
3153 unsigned int mode);
3154extern int yama_ptrace_traceme(struct task_struct *parent);
3155extern void yama_task_free(struct task_struct *task);
3156extern int yama_task_prctl(int option, unsigned long arg2, unsigned long arg3,
3157 unsigned long arg4, unsigned long arg5);
3158#else
3159static inline int yama_ptrace_access_check(struct task_struct *child,
3160 unsigned int mode)
3161{
3162 return 0;
3163}
3164
3165static inline int yama_ptrace_traceme(struct task_struct *parent)
3166{
3167 return 0;
3168}
3169
3170static inline void yama_task_free(struct task_struct *task)
3171{
3172}
3173
3174static inline int yama_task_prctl(int option, unsigned long arg2,
3175 unsigned long arg3, unsigned long arg4,
3176 unsigned long arg5)
3177{
3178 return -ENOSYS;
3179}
3180#endif /* CONFIG_SECURITY_YAMA */
3181
Linus Torvalds1da177e2005-04-16 15:20:36 -07003182#endif /* ! __LINUX_SECURITY_H */
3183