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1 /*
2 * Linux Security plug
3 *
4 * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
5 * Copyright (C) 2001 Greg Kroah-Hartman <greg@kroah.com>
6 * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
7 * Copyright (C) 2001 James Morris <jmorris@intercode.com.au>
8 * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group)
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * Due to this file being licensed under the GPL there is controversy over
16 * whether this permits you to write a module that #includes this file
17 * without placing your module under the GPL. Please consult a lawyer for
18 * advice before doing this.
19 *
20 */
21
22 #ifndef __LINUX_SECURITY_H
23 #define __LINUX_SECURITY_H
24
25 #include <linux/key.h>
26 #include <linux/capability.h>
27 #include <linux/slab.h>
28 #include <linux/err.h>
29 #include <linux/string.h>
30
31 struct linux_binprm;
32 struct cred;
33 struct rlimit;
34 struct siginfo;
35 struct sem_array;
36 struct sembuf;
37 struct kern_ipc_perm;
38 struct audit_context;
39 struct super_block;
40 struct inode;
41 struct dentry;
42 struct file;
43 struct vfsmount;
44 struct path;
45 struct qstr;
46 struct nameidata;
47 struct iattr;
48 struct fown_struct;
49 struct file_operations;
50 struct shmid_kernel;
51 struct msg_msg;
52 struct msg_queue;
53 struct xattr;
54 struct xfrm_sec_ctx;
55 struct mm_struct;
56
57 /* Maximum number of letters for an LSM name string */
58 #define SECURITY_NAME_MAX 10
59
60 /* If capable should audit the security request */
61 #define SECURITY_CAP_NOAUDIT 0
62 #define SECURITY_CAP_AUDIT 1
63
64 /* LSM Agnostic defines for sb_set_mnt_opts */
65 #define SECURITY_LSM_NATIVE_LABELS 1
66
67 struct ctl_table;
68 struct audit_krule;
69 struct user_namespace;
70 struct timezone;
71
72 /*
73 * These functions are in security/capability.c and are used
74 * as the default capabilities functions
75 */
76 extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
77 int cap, int audit);
78 extern int cap_settime(const struct timespec *ts, const struct timezone *tz);
79 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
80 extern int cap_ptrace_traceme(struct task_struct *parent);
81 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
82 extern 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);
86 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
87 extern int cap_bprm_secureexec(struct linux_binprm *bprm);
88 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
89 const void *value, size_t size, int flags);
90 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
91 extern int cap_inode_need_killpriv(struct dentry *dentry);
92 extern int cap_inode_killpriv(struct dentry *dentry);
93 extern int cap_mmap_addr(unsigned long addr);
94 extern int cap_mmap_file(struct file *file, unsigned long reqprot,
95 unsigned long prot, unsigned long flags);
96 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
97 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
98 unsigned long arg4, unsigned long arg5);
99 extern int cap_task_setscheduler(struct task_struct *p);
100 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
101 extern int cap_task_setnice(struct task_struct *p, int nice);
102 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
103
104 struct msghdr;
105 struct sk_buff;
106 struct sock;
107 struct sockaddr;
108 struct socket;
109 struct flowi;
110 struct dst_entry;
111 struct xfrm_selector;
112 struct xfrm_policy;
113 struct xfrm_state;
114 struct xfrm_user_sec_ctx;
115 struct seq_file;
116
117 extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
118
119 void reset_security_ops(void);
120
121 #ifdef CONFIG_MMU
122 extern unsigned long mmap_min_addr;
123 extern unsigned long dac_mmap_min_addr;
124 #else
125 #define mmap_min_addr 0UL
126 #define dac_mmap_min_addr 0UL
127 #endif
128
129 /*
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 */
145 struct sched_param;
146 struct request_sock;
147
148 /* bprm->unsafe reasons */
149 #define LSM_UNSAFE_SHARE 1
150 #define LSM_UNSAFE_PTRACE 2
151 #define LSM_UNSAFE_PTRACE_CAP 4
152 #define LSM_UNSAFE_NO_NEW_PRIVS 8
153
154 #ifdef CONFIG_MMU
155 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
156 void __user *buffer, size_t *lenp, loff_t *ppos);
157 #endif
158
159 /* security_inode_init_security callback function to write xattrs */
160 typedef int (*initxattrs) (struct inode *inode,
161 const struct xattr *xattr_array, void *fs_data);
162
163 #ifdef CONFIG_SECURITY
164
165 struct security_mnt_opts {
166 char **mnt_opts;
167 int *mnt_opts_flags;
168 int num_mnt_opts;
169 };
170
171 static 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
178 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
179 {
180 int i;
181 if (opts->mnt_opts)
182 for (i = 0; i < opts->num_mnt_opts; i++)
183 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
191 /**
192 * struct security_operations - main security structure
193 *
194 * Security module identifier.
195 *
196 * @name:
197 * A string that acts as a unique identifier for the LSM with max number
198 * of characters = SECURITY_NAME_MAX.
199 *
200 * Security hooks for program execution operations.
201 *
202 * @bprm_set_creds:
203 * 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:
215 * 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.
221 * @bprm contains the linux_binprm structure.
222 * Return 0 if the hook is successful and permission is granted.
223 * @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().
239 * @bprm_secureexec:
240 * 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.
245 *
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:
258 * Check permission before obtaining filesystem statistics for the @mnt
259 * mountpoint.
260 * @dentry is a handle on the superblock for the filesystem.
261 * Return 0 if permission is granted.
262 * @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.
270 * @path contains the path for mount point object.
271 * @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.
285 * @sb_remount:
286 * Extracts security system specific mount options and verifies no changes
287 * 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.
291 * @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.
296 * @sb_pivotroot:
297 * Check permission before pivoting the root filesystem.
298 * @old_path contains the path for the new location of the current root (put_old).
299 * @new_path contains the path for the new root (new_root).
300 * Return 0 if permission is granted.
301 * @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
304 * @opts binary data structure containing all lsm mount data
305 * @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
309 * @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
313 * @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 *
322 *
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
334 * NULL.
335 * @inode_init_security:
336 * Obtain the security attribute name suffix and value to set on a newly
337 * 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.
348 * @qstr contains the last path component of the new object
349 * @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.
355 * @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.
361 * @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.
367 * @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.
375 * @inode_unlink:
376 * Check the permission to remove a hard link to a file.
377 * @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.
380 * @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.
385 * @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.
391 * @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.
398 * @inode_mkdir:
399 * Check permissions to create a new directory in the existing directory
400 * associated with inode structure @dir.
401 * @dir contains the inode structure of parent of the directory to be created.
402 * @dentry contains the dentry structure of new directory.
403 * @mode contains the mode of new directory.
404 * Return 0 if permission is granted.
405 * @path_mkdir:
406 * Check permissions to create a new directory in the existing directory
407 * associated with path structure @path.
408 * @dir contains the path structure of parent of the directory
409 * 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.
413 * @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.
418 * @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.
424 * @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.
432 * @dev contains the device number.
433 * Return 0 if permission is granted.
434 * @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.
443 * @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.
450 * @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.
457 * @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.
469 * @path_chroot:
470 * Check for permission to change root directory.
471 * @path contains the path structure.
472 * Return 0 if permission is granted.
473 * @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.
491 * 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.
500 * @path_truncate:
501 * Check permission before truncating a file.
502 * @path contains the path structure for the file.
503 * Return 0 if permission is granted.
504 * @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.
509 * @inode_setxattr:
510 * Check permission before setting the extended attributes
511 * @value identified by @name for @dentry.
512 * Return 0 if permission is granted.
513 * @inode_post_setxattr:
514 * Update inode security field after successful setxattr operation.
515 * @value identified by @name for @dentry.
516 * @inode_getxattr:
517 * Check permission before obtaining the extended attributes
518 * identified by @name for @dentry.
519 * Return 0 if permission is granted.
520 * @inode_listxattr:
521 * Check permission before obtaining the list of extended attribute
522 * names for @dentry.
523 * Return 0 if permission is granted.
524 * @inode_removexattr:
525 * Check permission before removing the extended attribute
526 * identified by @name for @dentry.
527 * Return 0 if permission is granted.
528 * @inode_getsecurity:
529 * 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.
535 * @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.
539 * Note that @name is the remainder of the attribute name after the
540 * 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.
548 * @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.
560 * @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.
565 *
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.
598 * Check permission for an ioctl operation on @file. Note that @arg
599 * 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.
603 * @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 :
608 * 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
630 * from being performed on the file @file. Note that @arg sometimes
631 * 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:
649 * container_of(fown, struct file, f_owner)
650 * @tsk contains the structure of task receiving signal.
651 * @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.
659 * @file_open
660 * 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 *
664 * 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.
671 * @task_free:
672 * @task task being freed
673 * Handle release of task-related resources. (Note that this can be called
674 * from interrupt context.)
675 * @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.
680 * @cred_free:
681 * @cred points to the credentials.
682 * Deallocate and clear the cred->security field in a set of credentials.
683 * @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.
688 * @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
692 * @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.
705 * @kernel_fw_from_file:
706 * Load firmware from userspace (not called for built-in firmware).
707 * @file contains the file structure pointing to the file containing
708 * the firmware to load. This argument will be NULL if the firmware
709 * was loaded via the uevent-triggered blob-based interface exposed
710 * by CONFIG_FW_LOADER_USER_HELPER.
711 * @buf pointer to buffer containing firmware contents.
712 * @size length of the firmware contents.
713 * Return 0 if permission is granted.
714 * @kernel_module_request:
715 * Ability to trigger the kernel to automatically upcall to userspace for
716 * userspace to load a kernel module with the given name.
717 * @kmod_name name of the module requested by the kernel
718 * Return 0 if successful.
719 * @kernel_module_from_file:
720 * Load a kernel module from userspace.
721 * @file contains the file structure pointing to the file containing
722 * the kernel module to load. If the module is being loaded from a blob,
723 * this argument will be NULL.
724 * Return 0 if permission is granted.
725 * @task_fix_setuid:
726 * Update the module's state after setting one or more of the user
727 * identity attributes of the current process. The @flags parameter
728 * indicates which of the set*uid system calls invoked this hook. If
729 * @new is the set of credentials that will be installed. Modifications
730 * should be made to this rather than to @current->cred.
731 * @old is the set of credentials that are being replaces
732 * @flags contains one of the LSM_SETID_* values.
733 * Return 0 on success.
734 * @task_setpgid:
735 * Check permission before setting the process group identifier of the
736 * process @p to @pgid.
737 * @p contains the task_struct for process being modified.
738 * @pgid contains the new pgid.
739 * Return 0 if permission is granted.
740 * @task_getpgid:
741 * Check permission before getting the process group identifier of the
742 * process @p.
743 * @p contains the task_struct for the process.
744 * Return 0 if permission is granted.
745 * @task_getsid:
746 * Check permission before getting the session identifier of the process
747 * @p.
748 * @p contains the task_struct for the process.
749 * Return 0 if permission is granted.
750 * @task_getsecid:
751 * Retrieve the security identifier of the process @p.
752 * @p contains the task_struct for the process and place is into @secid.
753 * In case of failure, @secid will be set to zero.
754 *
755 * @task_setnice:
756 * Check permission before setting the nice value of @p to @nice.
757 * @p contains the task_struct of process.
758 * @nice contains the new nice value.
759 * Return 0 if permission is granted.
760 * @task_setioprio
761 * Check permission before setting the ioprio value of @p to @ioprio.
762 * @p contains the task_struct of process.
763 * @ioprio contains the new ioprio value
764 * Return 0 if permission is granted.
765 * @task_getioprio
766 * Check permission before getting the ioprio value of @p.
767 * @p contains the task_struct of process.
768 * Return 0 if permission is granted.
769 * @task_setrlimit:
770 * Check permission before setting the resource limits of the current
771 * process for @resource to @new_rlim. The old resource limit values can
772 * be examined by dereferencing (current->signal->rlim + resource).
773 * @resource contains the resource whose limit is being set.
774 * @new_rlim contains the new limits for @resource.
775 * Return 0 if permission is granted.
776 * @task_setscheduler:
777 * Check permission before setting scheduling policy and/or parameters of
778 * process @p based on @policy and @lp.
779 * @p contains the task_struct for process.
780 * @policy contains the scheduling policy.
781 * @lp contains the scheduling parameters.
782 * Return 0 if permission is granted.
783 * @task_getscheduler:
784 * Check permission before obtaining scheduling information for process
785 * @p.
786 * @p contains the task_struct for process.
787 * Return 0 if permission is granted.
788 * @task_movememory
789 * Check permission before moving memory owned by process @p.
790 * @p contains the task_struct for process.
791 * Return 0 if permission is granted.
792 * @task_kill:
793 * Check permission before sending signal @sig to @p. @info can be NULL,
794 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
795 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
796 * from the kernel and should typically be permitted.
797 * SIGIO signals are handled separately by the send_sigiotask hook in
798 * file_security_ops.
799 * @p contains the task_struct for process.
800 * @info contains the signal information.
801 * @sig contains the signal value.
802 * @secid contains the sid of the process where the signal originated
803 * Return 0 if permission is granted.
804 * @task_wait:
805 * Check permission before allowing a process to reap a child process @p
806 * and collect its status information.
807 * @p contains the task_struct for process.
808 * Return 0 if permission is granted.
809 * @task_prctl:
810 * Check permission before performing a process control operation on the
811 * current process.
812 * @option contains the operation.
813 * @arg2 contains a argument.
814 * @arg3 contains a argument.
815 * @arg4 contains a argument.
816 * @arg5 contains a argument.
817 * Return -ENOSYS if no-one wanted to handle this op, any other value to
818 * cause prctl() to return immediately with that value.
819 * @task_to_inode:
820 * Set the security attributes for an inode based on an associated task's
821 * security attributes, e.g. for /proc/pid inodes.
822 * @p contains the task_struct for the task.
823 * @inode contains the inode structure for the inode.
824 *
825 * Security hooks for Netlink messaging.
826 *
827 * @netlink_send:
828 * Save security information for a netlink message so that permission
829 * checking can be performed when the message is processed. The security
830 * information can be saved using the eff_cap field of the
831 * netlink_skb_parms structure. Also may be used to provide fine
832 * grained control over message transmission.
833 * @sk associated sock of task sending the message.
834 * @skb contains the sk_buff structure for the netlink message.
835 * Return 0 if the information was successfully saved and message
836 * is allowed to be transmitted.
837 *
838 * Security hooks for Unix domain networking.
839 *
840 * @unix_stream_connect:
841 * Check permissions before establishing a Unix domain stream connection
842 * between @sock and @other.
843 * @sock contains the sock structure.
844 * @other contains the peer sock structure.
845 * @newsk contains the new sock structure.
846 * Return 0 if permission is granted.
847 * @unix_may_send:
848 * Check permissions before connecting or sending datagrams from @sock to
849 * @other.
850 * @sock contains the socket structure.
851 * @other contains the peer socket structure.
852 * Return 0 if permission is granted.
853 *
854 * The @unix_stream_connect and @unix_may_send hooks were necessary because
855 * Linux provides an alternative to the conventional file name space for Unix
856 * domain sockets. Whereas binding and connecting to sockets in the file name
857 * space is mediated by the typical file permissions (and caught by the mknod
858 * and permission hooks in inode_security_ops), binding and connecting to
859 * sockets in the abstract name space is completely unmediated. Sufficient
860 * control of Unix domain sockets in the abstract name space isn't possible
861 * using only the socket layer hooks, since we need to know the actual target
862 * socket, which is not looked up until we are inside the af_unix code.
863 *
864 * Security hooks for socket operations.
865 *
866 * @socket_create:
867 * Check permissions prior to creating a new socket.
868 * @family contains the requested protocol family.
869 * @type contains the requested communications type.
870 * @protocol contains the requested protocol.
871 * @kern set to 1 if a kernel socket.
872 * Return 0 if permission is granted.
873 * @socket_post_create:
874 * This hook allows a module to update or allocate a per-socket security
875 * structure. Note that the security field was not added directly to the
876 * socket structure, but rather, the socket security information is stored
877 * in the associated inode. Typically, the inode alloc_security hook will
878 * allocate and and attach security information to
879 * sock->inode->i_security. This hook may be used to update the
880 * sock->inode->i_security field with additional information that wasn't
881 * available when the inode was allocated.
882 * @sock contains the newly created socket structure.
883 * @family contains the requested protocol family.
884 * @type contains the requested communications type.
885 * @protocol contains the requested protocol.
886 * @kern set to 1 if a kernel socket.
887 * @socket_bind:
888 * Check permission before socket protocol layer bind operation is
889 * performed and the socket @sock is bound to the address specified in the
890 * @address parameter.
891 * @sock contains the socket structure.
892 * @address contains the address to bind to.
893 * @addrlen contains the length of address.
894 * Return 0 if permission is granted.
895 * @socket_connect:
896 * Check permission before socket protocol layer connect operation
897 * attempts to connect socket @sock to a remote address, @address.
898 * @sock contains the socket structure.
899 * @address contains the address of remote endpoint.
900 * @addrlen contains the length of address.
901 * Return 0 if permission is granted.
902 * @socket_listen:
903 * Check permission before socket protocol layer listen operation.
904 * @sock contains the socket structure.
905 * @backlog contains the maximum length for the pending connection queue.
906 * Return 0 if permission is granted.
907 * @socket_accept:
908 * Check permission before accepting a new connection. Note that the new
909 * socket, @newsock, has been created and some information copied to it,
910 * but the accept operation has not actually been performed.
911 * @sock contains the listening socket structure.
912 * @newsock contains the newly created server socket for connection.
913 * Return 0 if permission is granted.
914 * @socket_sendmsg:
915 * Check permission before transmitting a message to another socket.
916 * @sock contains the socket structure.
917 * @msg contains the message to be transmitted.
918 * @size contains the size of message.
919 * Return 0 if permission is granted.
920 * @socket_recvmsg:
921 * Check permission before receiving a message from a socket.
922 * @sock contains the socket structure.
923 * @msg contains the message structure.
924 * @size contains the size of message structure.
925 * @flags contains the operational flags.
926 * Return 0 if permission is granted.
927 * @socket_getsockname:
928 * Check permission before the local address (name) of the socket object
929 * @sock is retrieved.
930 * @sock contains the socket structure.
931 * Return 0 if permission is granted.
932 * @socket_getpeername:
933 * Check permission before the remote address (name) of a socket object
934 * @sock is retrieved.
935 * @sock contains the socket structure.
936 * Return 0 if permission is granted.
937 * @socket_getsockopt:
938 * Check permissions before retrieving the options associated with socket
939 * @sock.
940 * @sock contains the socket structure.
941 * @level contains the protocol level to retrieve option from.
942 * @optname contains the name of option to retrieve.
943 * Return 0 if permission is granted.
944 * @socket_setsockopt:
945 * Check permissions before setting the options associated with socket
946 * @sock.
947 * @sock contains the socket structure.
948 * @level contains the protocol level to set options for.
949 * @optname contains the name of the option to set.
950 * Return 0 if permission is granted.
951 * @socket_shutdown:
952 * Checks permission before all or part of a connection on the socket
953 * @sock is shut down.
954 * @sock contains the socket structure.
955 * @how contains the flag indicating how future sends and receives are handled.
956 * Return 0 if permission is granted.
957 * @socket_sock_rcv_skb:
958 * Check permissions on incoming network packets. This hook is distinct
959 * from Netfilter's IP input hooks since it is the first time that the
960 * incoming sk_buff @skb has been associated with a particular socket, @sk.
961 * Must not sleep inside this hook because some callers hold spinlocks.
962 * @sk contains the sock (not socket) associated with the incoming sk_buff.
963 * @skb contains the incoming network data.
964 * @socket_getpeersec_stream:
965 * This hook allows the security module to provide peer socket security
966 * state for unix or connected tcp sockets to userspace via getsockopt
967 * SO_GETPEERSEC. For tcp sockets this can be meaningful if the
968 * socket is associated with an ipsec SA.
969 * @sock is the local socket.
970 * @optval userspace memory where the security state is to be copied.
971 * @optlen userspace int where the module should copy the actual length
972 * of the security state.
973 * @len as input is the maximum length to copy to userspace provided
974 * by the caller.
975 * Return 0 if all is well, otherwise, typical getsockopt return
976 * values.
977 * @socket_getpeersec_dgram:
978 * This hook allows the security module to provide peer socket security
979 * state for udp sockets on a per-packet basis to userspace via
980 * getsockopt SO_GETPEERSEC. The application must first have indicated
981 * the IP_PASSSEC option via getsockopt. It can then retrieve the
982 * security state returned by this hook for a packet via the SCM_SECURITY
983 * ancillary message type.
984 * @skb is the skbuff for the packet being queried
985 * @secdata is a pointer to a buffer in which to copy the security data
986 * @seclen is the maximum length for @secdata
987 * Return 0 on success, error on failure.
988 * @sk_alloc_security:
989 * Allocate and attach a security structure to the sk->sk_security field,
990 * which is used to copy security attributes between local stream sockets.
991 * @sk_free_security:
992 * Deallocate security structure.
993 * @sk_clone_security:
994 * Clone/copy security structure.
995 * @sk_getsecid:
996 * Retrieve the LSM-specific secid for the sock to enable caching of network
997 * authorizations.
998 * @sock_graft:
999 * Sets the socket's isec sid to the sock's sid.
1000 * @inet_conn_request:
1001 * Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
1002 * @inet_csk_clone:
1003 * Sets the new child socket's sid to the openreq sid.
1004 * @inet_conn_established:
1005 * Sets the connection's peersid to the secmark on skb.
1006 * @secmark_relabel_packet:
1007 * check if the process should be allowed to relabel packets to the given secid
1008 * @security_secmark_refcount_inc
1009 * tells the LSM to increment the number of secmark labeling rules loaded
1010 * @security_secmark_refcount_dec
1011 * tells the LSM to decrement the number of secmark labeling rules loaded
1012 * @req_classify_flow:
1013 * Sets the flow's sid to the openreq sid.
1014 * @tun_dev_alloc_security:
1015 * This hook allows a module to allocate a security structure for a TUN
1016 * device.
1017 * @security pointer to a security structure pointer.
1018 * Returns a zero on success, negative values on failure.
1019 * @tun_dev_free_security:
1020 * This hook allows a module to free the security structure for a TUN
1021 * device.
1022 * @security pointer to the TUN device's security structure
1023 * @tun_dev_create:
1024 * Check permissions prior to creating a new TUN device.
1025 * @tun_dev_attach_queue:
1026 * Check permissions prior to attaching to a TUN device queue.
1027 * @security pointer to the TUN device's security structure.
1028 * @tun_dev_attach:
1029 * This hook can be used by the module to update any security state
1030 * associated with the TUN device's sock structure.
1031 * @sk contains the existing sock structure.
1032 * @security pointer to the TUN device's security structure.
1033 * @tun_dev_open:
1034 * This hook can be used by the module to update any security state
1035 * associated with the TUN device's security structure.
1036 * @security pointer to the TUN devices's security structure.
1037 * @skb_owned_by:
1038 * This hook sets the packet's owning sock.
1039 * @skb is the packet.
1040 * @sk the sock which owns the packet.
1041 *
1042 * Security hooks for XFRM operations.
1043 *
1044 * @xfrm_policy_alloc_security:
1045 * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
1046 * Database used by the XFRM system.
1047 * @sec_ctx contains the security context information being provided by
1048 * the user-level policy update program (e.g., setkey).
1049 * Allocate a security structure to the xp->security field; the security
1050 * field is initialized to NULL when the xfrm_policy is allocated.
1051 * Return 0 if operation was successful (memory to allocate, legal context)
1052 * @gfp is to specify the context for the allocation
1053 * @xfrm_policy_clone_security:
1054 * @old_ctx contains an existing xfrm_sec_ctx.
1055 * @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
1056 * Allocate a security structure in new_ctxp that contains the
1057 * information from the old_ctx structure.
1058 * Return 0 if operation was successful (memory to allocate).
1059 * @xfrm_policy_free_security:
1060 * @ctx contains the xfrm_sec_ctx
1061 * Deallocate xp->security.
1062 * @xfrm_policy_delete_security:
1063 * @ctx contains the xfrm_sec_ctx.
1064 * Authorize deletion of xp->security.
1065 * @xfrm_state_alloc:
1066 * @x contains the xfrm_state being added to the Security Association
1067 * Database by the XFRM system.
1068 * @sec_ctx contains the security context information being provided by
1069 * the user-level SA generation program (e.g., setkey or racoon).
1070 * Allocate a security structure to the x->security field; the security
1071 * field is initialized to NULL when the xfrm_state is allocated. Set the
1072 * context to correspond to sec_ctx. Return 0 if operation was successful
1073 * (memory to allocate, legal context).
1074 * @xfrm_state_alloc_acquire:
1075 * @x contains the xfrm_state being added to the Security Association
1076 * Database by the XFRM system.
1077 * @polsec contains the policy's security context.
1078 * @secid contains the secid from which to take the mls portion of the
1079 * context.
1080 * Allocate a security structure to the x->security field; the security
1081 * field is initialized to NULL when the xfrm_state is allocated. Set the
1082 * context to correspond to secid. Return 0 if operation was successful
1083 * (memory to allocate, legal context).
1084 * @xfrm_state_free_security:
1085 * @x contains the xfrm_state.
1086 * Deallocate x->security.
1087 * @xfrm_state_delete_security:
1088 * @x contains the xfrm_state.
1089 * Authorize deletion of x->security.
1090 * @xfrm_policy_lookup:
1091 * @ctx contains the xfrm_sec_ctx for which the access control is being
1092 * checked.
1093 * @fl_secid contains the flow security label that is used to authorize
1094 * access to the policy xp.
1095 * @dir contains the direction of the flow (input or output).
1096 * Check permission when a flow selects a xfrm_policy for processing
1097 * XFRMs on a packet. The hook is called when selecting either a
1098 * per-socket policy or a generic xfrm policy.
1099 * Return 0 if permission is granted, -ESRCH otherwise, or -errno
1100 * on other errors.
1101 * @xfrm_state_pol_flow_match:
1102 * @x contains the state to match.
1103 * @xp contains the policy to check for a match.
1104 * @fl contains the flow to check for a match.
1105 * Return 1 if there is a match.
1106 * @xfrm_decode_session:
1107 * @skb points to skb to decode.
1108 * @secid points to the flow key secid to set.
1109 * @ckall says if all xfrms used should be checked for same secid.
1110 * Return 0 if ckall is zero or all xfrms used have the same secid.
1111 *
1112 * Security hooks affecting all Key Management operations
1113 *
1114 * @key_alloc:
1115 * Permit allocation of a key and assign security data. Note that key does
1116 * not have a serial number assigned at this point.
1117 * @key points to the key.
1118 * @flags is the allocation flags
1119 * Return 0 if permission is granted, -ve error otherwise.
1120 * @key_free:
1121 * Notification of destruction; free security data.
1122 * @key points to the key.
1123 * No return value.
1124 * @key_permission:
1125 * See whether a specific operational right is granted to a process on a
1126 * key.
1127 * @key_ref refers to the key (key pointer + possession attribute bit).
1128 * @cred points to the credentials to provide the context against which to
1129 * evaluate the security data on the key.
1130 * @perm describes the combination of permissions required of this key.
1131 * Return 0 if permission is granted, -ve error otherwise.
1132 * @key_getsecurity:
1133 * Get a textual representation of the security context attached to a key
1134 * for the purposes of honouring KEYCTL_GETSECURITY. This function
1135 * allocates the storage for the NUL-terminated string and the caller
1136 * should free it.
1137 * @key points to the key to be queried.
1138 * @_buffer points to a pointer that should be set to point to the
1139 * resulting string (if no label or an error occurs).
1140 * Return the length of the string (including terminating NUL) or -ve if
1141 * an error.
1142 * May also return 0 (and a NULL buffer pointer) if there is no label.
1143 *
1144 * Security hooks affecting all System V IPC operations.
1145 *
1146 * @ipc_permission:
1147 * Check permissions for access to IPC
1148 * @ipcp contains the kernel IPC permission structure
1149 * @flag contains the desired (requested) permission set
1150 * Return 0 if permission is granted.
1151 * @ipc_getsecid:
1152 * Get the secid associated with the ipc object.
1153 * @ipcp contains the kernel IPC permission structure.
1154 * @secid contains a pointer to the location where result will be saved.
1155 * In case of failure, @secid will be set to zero.
1156 *
1157 * Security hooks for individual messages held in System V IPC message queues
1158 * @msg_msg_alloc_security:
1159 * Allocate and attach a security structure to the msg->security field.
1160 * The security field is initialized to NULL when the structure is first
1161 * created.
1162 * @msg contains the message structure to be modified.
1163 * Return 0 if operation was successful and permission is granted.
1164 * @msg_msg_free_security:
1165 * Deallocate the security structure for this message.
1166 * @msg contains the message structure to be modified.
1167 *
1168 * Security hooks for System V IPC Message Queues
1169 *
1170 * @msg_queue_alloc_security:
1171 * Allocate and attach a security structure to the
1172 * msq->q_perm.security field. The security field is initialized to
1173 * NULL when the structure is first created.
1174 * @msq contains the message queue structure to be modified.
1175 * Return 0 if operation was successful and permission is granted.
1176 * @msg_queue_free_security:
1177 * Deallocate security structure for this message queue.
1178 * @msq contains the message queue structure to be modified.
1179 * @msg_queue_associate:
1180 * Check permission when a message queue is requested through the
1181 * msgget system call. This hook is only called when returning the
1182 * message queue identifier for an existing message queue, not when a
1183 * new message queue is created.
1184 * @msq contains the message queue to act upon.
1185 * @msqflg contains the operation control flags.
1186 * Return 0 if permission is granted.
1187 * @msg_queue_msgctl:
1188 * Check permission when a message control operation specified by @cmd
1189 * is to be performed on the message queue @msq.
1190 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
1191 * @msq contains the message queue to act upon. May be NULL.
1192 * @cmd contains the operation to be performed.
1193 * Return 0 if permission is granted.
1194 * @msg_queue_msgsnd:
1195 * Check permission before a message, @msg, is enqueued on the message
1196 * queue, @msq.
1197 * @msq contains the message queue to send message to.
1198 * @msg contains the message to be enqueued.
1199 * @msqflg contains operational flags.
1200 * Return 0 if permission is granted.
1201 * @msg_queue_msgrcv:
1202 * Check permission before a message, @msg, is removed from the message
1203 * queue, @msq. The @target task structure contains a pointer to the
1204 * process that will be receiving the message (not equal to the current
1205 * process when inline receives are being performed).
1206 * @msq contains the message queue to retrieve message from.
1207 * @msg contains the message destination.
1208 * @target contains the task structure for recipient process.
1209 * @type contains the type of message requested.
1210 * @mode contains the operational flags.
1211 * Return 0 if permission is granted.
1212 *
1213 * Security hooks for System V Shared Memory Segments
1214 *
1215 * @shm_alloc_security:
1216 * Allocate and attach a security structure to the shp->shm_perm.security
1217 * field. The security field is initialized to NULL when the structure is
1218 * first created.
1219 * @shp contains the shared memory structure to be modified.
1220 * Return 0 if operation was successful and permission is granted.
1221 * @shm_free_security:
1222 * Deallocate the security struct for this memory segment.
1223 * @shp contains the shared memory structure to be modified.
1224 * @shm_associate:
1225 * Check permission when a shared memory region is requested through the
1226 * shmget system call. This hook is only called when returning the shared
1227 * memory region identifier for an existing region, not when a new shared
1228 * memory region is created.
1229 * @shp contains the shared memory structure to be modified.
1230 * @shmflg contains the operation control flags.
1231 * Return 0 if permission is granted.
1232 * @shm_shmctl:
1233 * Check permission when a shared memory control operation specified by
1234 * @cmd is to be performed on the shared memory region @shp.
1235 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1236 * @shp contains shared memory structure to be modified.
1237 * @cmd contains the operation to be performed.
1238 * Return 0 if permission is granted.
1239 * @shm_shmat:
1240 * Check permissions prior to allowing the shmat system call to attach the
1241 * shared memory segment @shp to the data segment of the calling process.
1242 * The attaching address is specified by @shmaddr.
1243 * @shp contains the shared memory structure to be modified.
1244 * @shmaddr contains the address to attach memory region to.
1245 * @shmflg contains the operational flags.
1246 * Return 0 if permission is granted.
1247 *
1248 * Security hooks for System V Semaphores
1249 *
1250 * @sem_alloc_security:
1251 * Allocate and attach a security structure to the sma->sem_perm.security
1252 * field. The security field is initialized to NULL when the structure is
1253 * first created.
1254 * @sma contains the semaphore structure
1255 * Return 0 if operation was successful and permission is granted.
1256 * @sem_free_security:
1257 * deallocate security struct for this semaphore
1258 * @sma contains the semaphore structure.
1259 * @sem_associate:
1260 * Check permission when a semaphore is requested through the semget
1261 * system call. This hook is only called when returning the semaphore
1262 * identifier for an existing semaphore, not when a new one must be
1263 * created.
1264 * @sma contains the semaphore structure.
1265 * @semflg contains the operation control flags.
1266 * Return 0 if permission is granted.
1267 * @sem_semctl:
1268 * Check permission when a semaphore operation specified by @cmd is to be
1269 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
1270 * IPC_INFO or SEM_INFO.
1271 * @sma contains the semaphore structure. May be NULL.
1272 * @cmd contains the operation to be performed.
1273 * Return 0 if permission is granted.
1274 * @sem_semop
1275 * Check permissions before performing operations on members of the
1276 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1277 * may be modified.
1278 * @sma contains the semaphore structure.
1279 * @sops contains the operations to perform.
1280 * @nsops contains the number of operations to perform.
1281 * @alter contains the flag indicating whether changes are to be made.
1282 * Return 0 if permission is granted.
1283 *
1284 * @binder_set_context_mgr
1285 * Check whether @mgr is allowed to be the binder context manager.
1286 * @mgr contains the task_struct for the task being registered.
1287 * Return 0 if permission is granted.
1288 * @binder_transaction
1289 * Check whether @from is allowed to invoke a binder transaction call
1290 * to @to.
1291 * @from contains the task_struct for the sending task.
1292 * @to contains the task_struct for the receiving task.
1293 * @binder_transfer_binder
1294 * Check whether @from is allowed to transfer a binder reference to @to.
1295 * @from contains the task_struct for the sending task.
1296 * @to contains the task_struct for the receiving task.
1297 * @binder_transfer_file
1298 * Check whether @from is allowed to transfer @file to @to.
1299 * @from contains the task_struct for the sending task.
1300 * @file contains the struct file being transferred.
1301 * @to contains the task_struct for the receiving task.
1302 *
1303 * @ptrace_access_check:
1304 * Check permission before allowing the current process to trace the
1305 * @child process.
1306 * Security modules may also want to perform a process tracing check
1307 * during an execve in the set_security or apply_creds hooks of
1308 * tracing check during an execve in the bprm_set_creds hook of
1309 * binprm_security_ops if the process is being traced and its security
1310 * attributes would be changed by the execve.
1311 * @child contains the task_struct structure for the target process.
1312 * @mode contains the PTRACE_MODE flags indicating the form of access.
1313 * Return 0 if permission is granted.
1314 * @ptrace_traceme:
1315 * Check that the @parent process has sufficient permission to trace the
1316 * current process before allowing the current process to present itself
1317 * to the @parent process for tracing.
1318 * @parent contains the task_struct structure for debugger process.
1319 * Return 0 if permission is granted.
1320 * @capget:
1321 * Get the @effective, @inheritable, and @permitted capability sets for
1322 * the @target process. The hook may also perform permission checking to
1323 * determine if the current process is allowed to see the capability sets
1324 * of the @target process.
1325 * @target contains the task_struct structure for target process.
1326 * @effective contains the effective capability set.
1327 * @inheritable contains the inheritable capability set.
1328 * @permitted contains the permitted capability set.
1329 * Return 0 if the capability sets were successfully obtained.
1330 * @capset:
1331 * Set the @effective, @inheritable, and @permitted capability sets for
1332 * the current process.
1333 * @new contains the new credentials structure for target process.
1334 * @old contains the current credentials structure for target process.
1335 * @effective contains the effective capability set.
1336 * @inheritable contains the inheritable capability set.
1337 * @permitted contains the permitted capability set.
1338 * Return 0 and update @new if permission is granted.
1339 * @capable:
1340 * Check whether the @tsk process has the @cap capability in the indicated
1341 * credentials.
1342 * @cred contains the credentials to use.
1343 * @ns contains the user namespace we want the capability in
1344 * @cap contains the capability <include/linux/capability.h>.
1345 * @audit: Whether to write an audit message or not
1346 * Return 0 if the capability is granted for @tsk.
1347 * @syslog:
1348 * Check permission before accessing the kernel message ring or changing
1349 * logging to the console.
1350 * See the syslog(2) manual page for an explanation of the @type values.
1351 * @type contains the type of action.
1352 * @from_file indicates the context of action (if it came from /proc).
1353 * Return 0 if permission is granted.
1354 * @settime:
1355 * Check permission to change the system time.
1356 * struct timespec and timezone are defined in include/linux/time.h
1357 * @ts contains new time
1358 * @tz contains new timezone
1359 * Return 0 if permission is granted.
1360 * @vm_enough_memory:
1361 * Check permissions for allocating a new virtual mapping.
1362 * @mm contains the mm struct it is being added to.
1363 * @pages contains the number of pages.
1364 * Return 0 if permission is granted.
1365 *
1366 * @ismaclabel:
1367 * Check if the extended attribute specified by @name
1368 * represents a MAC label. Returns 1 if name is a MAC
1369 * attribute otherwise returns 0.
1370 * @name full extended attribute name to check against
1371 * LSM as a MAC label.
1372 *
1373 * @secid_to_secctx:
1374 * Convert secid to security context. If secdata is NULL the length of
1375 * the result will be returned in seclen, but no secdata will be returned.
1376 * This does mean that the length could change between calls to check the
1377 * length and the next call which actually allocates and returns the secdata.
1378 * @secid contains the security ID.
1379 * @secdata contains the pointer that stores the converted security context.
1380 * @seclen pointer which contains the length of the data
1381 * @secctx_to_secid:
1382 * Convert security context to secid.
1383 * @secid contains the pointer to the generated security ID.
1384 * @secdata contains the security context.
1385 *
1386 * @release_secctx:
1387 * Release the security context.
1388 * @secdata contains the security context.
1389 * @seclen contains the length of the security context.
1390 *
1391 * Security hooks for Audit
1392 *
1393 * @audit_rule_init:
1394 * Allocate and initialize an LSM audit rule structure.
1395 * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
1396 * @op contains the operator the rule uses.
1397 * @rulestr contains the context where the rule will be applied to.
1398 * @lsmrule contains a pointer to receive the result.
1399 * Return 0 if @lsmrule has been successfully set,
1400 * -EINVAL in case of an invalid rule.
1401 *
1402 * @audit_rule_known:
1403 * Specifies whether given @rule contains any fields related to current LSM.
1404 * @rule contains the audit rule of interest.
1405 * Return 1 in case of relation found, 0 otherwise.
1406 *
1407 * @audit_rule_match:
1408 * Determine if given @secid matches a rule previously approved
1409 * by @audit_rule_known.
1410 * @secid contains the security id in question.
1411 * @field contains the field which relates to current LSM.
1412 * @op contains the operator that will be used for matching.
1413 * @rule points to the audit rule that will be checked against.
1414 * @actx points to the audit context associated with the check.
1415 * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
1416 *
1417 * @audit_rule_free:
1418 * Deallocate the LSM audit rule structure previously allocated by
1419 * audit_rule_init.
1420 * @rule contains the allocated rule
1421 *
1422 * @inode_notifysecctx:
1423 * Notify the security module of what the security context of an inode
1424 * should be. Initializes the incore security context managed by the
1425 * security module for this inode. Example usage: NFS client invokes
1426 * this hook to initialize the security context in its incore inode to the
1427 * value provided by the server for the file when the server returned the
1428 * file's attributes to the client.
1429 *
1430 * Must be called with inode->i_mutex locked.
1431 *
1432 * @inode we wish to set the security context of.
1433 * @ctx contains the string which we wish to set in the inode.
1434 * @ctxlen contains the length of @ctx.
1435 *
1436 * @inode_setsecctx:
1437 * Change the security context of an inode. Updates the
1438 * incore security context managed by the security module and invokes the
1439 * fs code as needed (via __vfs_setxattr_noperm) to update any backing
1440 * xattrs that represent the context. Example usage: NFS server invokes
1441 * this hook to change the security context in its incore inode and on the
1442 * backing filesystem to a value provided by the client on a SETATTR
1443 * operation.
1444 *
1445 * Must be called with inode->i_mutex locked.
1446 *
1447 * @dentry contains the inode we wish to set the security context of.
1448 * @ctx contains the string which we wish to set in the inode.
1449 * @ctxlen contains the length of @ctx.
1450 *
1451 * @inode_getsecctx:
1452 * On success, returns 0 and fills out @ctx and @ctxlen with the security
1453 * context for the given @inode.
1454 *
1455 * @inode we wish to get the security context of.
1456 * @ctx is a pointer in which to place the allocated security context.
1457 * @ctxlen points to the place to put the length of @ctx.
1458 * This is the main security structure.
1459 */
1460 struct security_operations {
1461 char name[SECURITY_NAME_MAX + 1];
1462
1463 int (*binder_set_context_mgr) (struct task_struct *mgr);
1464 int (*binder_transaction) (struct task_struct *from,
1465 struct task_struct *to);
1466 int (*binder_transfer_binder) (struct task_struct *from,
1467 struct task_struct *to);
1468 int (*binder_transfer_file) (struct task_struct *from,
1469 struct task_struct *to, struct file *file);
1470
1471 int (*ptrace_access_check) (struct task_struct *child, unsigned int mode);
1472 int (*ptrace_traceme) (struct task_struct *parent);
1473 int (*capget) (struct task_struct *target,
1474 kernel_cap_t *effective,
1475 kernel_cap_t *inheritable, kernel_cap_t *permitted);
1476 int (*capset) (struct cred *new,
1477 const struct cred *old,
1478 const kernel_cap_t *effective,
1479 const kernel_cap_t *inheritable,
1480 const kernel_cap_t *permitted);
1481 int (*capable) (const struct cred *cred, struct user_namespace *ns,
1482 int cap, int audit);
1483 int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
1484 int (*quota_on) (struct dentry *dentry);
1485 int (*syslog) (int type);
1486 int (*settime) (const struct timespec *ts, const struct timezone *tz);
1487 int (*vm_enough_memory) (struct mm_struct *mm, long pages);
1488
1489 int (*bprm_set_creds) (struct linux_binprm *bprm);
1490 int (*bprm_check_security) (struct linux_binprm *bprm);
1491 int (*bprm_secureexec) (struct linux_binprm *bprm);
1492 void (*bprm_committing_creds) (struct linux_binprm *bprm);
1493 void (*bprm_committed_creds) (struct linux_binprm *bprm);
1494
1495 int (*sb_alloc_security) (struct super_block *sb);
1496 void (*sb_free_security) (struct super_block *sb);
1497 int (*sb_copy_data) (char *orig, char *copy);
1498 int (*sb_remount) (struct super_block *sb, void *data);
1499 int (*sb_kern_mount) (struct super_block *sb, int flags, void *data);
1500 int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
1501 int (*sb_statfs) (struct dentry *dentry);
1502 int (*sb_mount) (const char *dev_name, struct path *path,
1503 const char *type, unsigned long flags, void *data);
1504 int (*sb_umount) (struct vfsmount *mnt, int flags);
1505 int (*sb_pivotroot) (struct path *old_path,
1506 struct path *new_path);
1507 int (*sb_set_mnt_opts) (struct super_block *sb,
1508 struct security_mnt_opts *opts,
1509 unsigned long kern_flags,
1510 unsigned long *set_kern_flags);
1511 int (*sb_clone_mnt_opts) (const struct super_block *oldsb,
1512 struct super_block *newsb);
1513 int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
1514 int (*dentry_init_security) (struct dentry *dentry, int mode,
1515 struct qstr *name, void **ctx,
1516 u32 *ctxlen);
1517
1518
1519 #ifdef CONFIG_SECURITY_PATH
1520 int (*path_unlink) (struct path *dir, struct dentry *dentry);
1521 int (*path_mkdir) (struct path *dir, struct dentry *dentry, umode_t mode);
1522 int (*path_rmdir) (struct path *dir, struct dentry *dentry);
1523 int (*path_mknod) (struct path *dir, struct dentry *dentry, umode_t mode,
1524 unsigned int dev);
1525 int (*path_truncate) (struct path *path);
1526 int (*path_symlink) (struct path *dir, struct dentry *dentry,
1527 const char *old_name);
1528 int (*path_link) (struct dentry *old_dentry, struct path *new_dir,
1529 struct dentry *new_dentry);
1530 int (*path_rename) (struct path *old_dir, struct dentry *old_dentry,
1531 struct path *new_dir, struct dentry *new_dentry);
1532 int (*path_chmod) (struct path *path, umode_t mode);
1533 int (*path_chown) (struct path *path, kuid_t uid, kgid_t gid);
1534 int (*path_chroot) (struct path *path);
1535 #endif
1536
1537 int (*inode_alloc_security) (struct inode *inode);
1538 void (*inode_free_security) (struct inode *inode);
1539 int (*inode_init_security) (struct inode *inode, struct inode *dir,
1540 const struct qstr *qstr, const char **name,
1541 void **value, size_t *len);
1542 int (*inode_create) (struct inode *dir,
1543 struct dentry *dentry, umode_t mode);
1544 int (*inode_link) (struct dentry *old_dentry,
1545 struct inode *dir, struct dentry *new_dentry);
1546 int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
1547 int (*inode_symlink) (struct inode *dir,
1548 struct dentry *dentry, const char *old_name);
1549 int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, umode_t mode);
1550 int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
1551 int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
1552 umode_t mode, dev_t dev);
1553 int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
1554 struct inode *new_dir, struct dentry *new_dentry);
1555 int (*inode_readlink) (struct dentry *dentry);
1556 int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
1557 int (*inode_permission) (struct inode *inode, int mask);
1558 int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
1559 int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
1560 int (*inode_setxattr) (struct dentry *dentry, const char *name,
1561 const void *value, size_t size, int flags);
1562 void (*inode_post_setxattr) (struct dentry *dentry, const char *name,
1563 const void *value, size_t size, int flags);
1564 int (*inode_getxattr) (struct dentry *dentry, const char *name);
1565 int (*inode_listxattr) (struct dentry *dentry);
1566 int (*inode_removexattr) (struct dentry *dentry, const char *name);
1567 int (*inode_need_killpriv) (struct dentry *dentry);
1568 int (*inode_killpriv) (struct dentry *dentry);
1569 int (*inode_getsecurity) (const struct inode *inode, const char *name, void **buffer, bool alloc);
1570 int (*inode_setsecurity) (struct inode *inode, const char *name, const void *value, size_t size, int flags);
1571 int (*inode_listsecurity) (struct inode *inode, char *buffer, size_t buffer_size);
1572 void (*inode_getsecid) (const struct inode *inode, u32 *secid);
1573
1574 int (*file_permission) (struct file *file, int mask);
1575 int (*file_alloc_security) (struct file *file);
1576 void (*file_free_security) (struct file *file);
1577 int (*file_ioctl) (struct file *file, unsigned int cmd,
1578 unsigned long arg);
1579 int (*mmap_addr) (unsigned long addr);
1580 int (*mmap_file) (struct file *file,
1581 unsigned long reqprot, unsigned long prot,
1582 unsigned long flags);
1583 int (*file_mprotect) (struct vm_area_struct *vma,
1584 unsigned long reqprot,
1585 unsigned long prot);
1586 int (*file_lock) (struct file *file, unsigned int cmd);
1587 int (*file_fcntl) (struct file *file, unsigned int cmd,
1588 unsigned long arg);
1589 void (*file_set_fowner) (struct file *file);
1590 int (*file_send_sigiotask) (struct task_struct *tsk,
1591 struct fown_struct *fown, int sig);
1592 int (*file_receive) (struct file *file);
1593 int (*file_open) (struct file *file, const struct cred *cred);
1594
1595 int (*task_create) (unsigned long clone_flags);
1596 void (*task_free) (struct task_struct *task);
1597 int (*cred_alloc_blank) (struct cred *cred, gfp_t gfp);
1598 void (*cred_free) (struct cred *cred);
1599 int (*cred_prepare)(struct cred *new, const struct cred *old,
1600 gfp_t gfp);
1601 void (*cred_transfer)(struct cred *new, const struct cred *old);
1602 int (*kernel_act_as)(struct cred *new, u32 secid);
1603 int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
1604 int (*kernel_fw_from_file)(struct file *file, char *buf, size_t size);
1605 int (*kernel_module_request)(char *kmod_name);
1606 int (*kernel_module_from_file)(struct file *file);
1607 int (*task_fix_setuid) (struct cred *new, const struct cred *old,
1608 int flags);
1609 int (*task_setpgid) (struct task_struct *p, pid_t pgid);
1610 int (*task_getpgid) (struct task_struct *p);
1611 int (*task_getsid) (struct task_struct *p);
1612 void (*task_getsecid) (struct task_struct *p, u32 *secid);
1613 int (*task_setnice) (struct task_struct *p, int nice);
1614 int (*task_setioprio) (struct task_struct *p, int ioprio);
1615 int (*task_getioprio) (struct task_struct *p);
1616 int (*task_setrlimit) (struct task_struct *p, unsigned int resource,
1617 struct rlimit *new_rlim);
1618 int (*task_setscheduler) (struct task_struct *p);
1619 int (*task_getscheduler) (struct task_struct *p);
1620 int (*task_movememory) (struct task_struct *p);
1621 int (*task_kill) (struct task_struct *p,
1622 struct siginfo *info, int sig, u32 secid);
1623 int (*task_wait) (struct task_struct *p);
1624 int (*task_prctl) (int option, unsigned long arg2,
1625 unsigned long arg3, unsigned long arg4,
1626 unsigned long arg5);
1627 void (*task_to_inode) (struct task_struct *p, struct inode *inode);
1628
1629 int (*ipc_permission) (struct kern_ipc_perm *ipcp, short flag);
1630 void (*ipc_getsecid) (struct kern_ipc_perm *ipcp, u32 *secid);
1631
1632 int (*msg_msg_alloc_security) (struct msg_msg *msg);
1633 void (*msg_msg_free_security) (struct msg_msg *msg);
1634
1635 int (*msg_queue_alloc_security) (struct msg_queue *msq);
1636 void (*msg_queue_free_security) (struct msg_queue *msq);
1637 int (*msg_queue_associate) (struct msg_queue *msq, int msqflg);
1638 int (*msg_queue_msgctl) (struct msg_queue *msq, int cmd);
1639 int (*msg_queue_msgsnd) (struct msg_queue *msq,
1640 struct msg_msg *msg, int msqflg);
1641 int (*msg_queue_msgrcv) (struct msg_queue *msq,
1642 struct msg_msg *msg,
1643 struct task_struct *target,
1644 long type, int mode);
1645
1646 int (*shm_alloc_security) (struct shmid_kernel *shp);
1647 void (*shm_free_security) (struct shmid_kernel *shp);
1648 int (*shm_associate) (struct shmid_kernel *shp, int shmflg);
1649 int (*shm_shmctl) (struct shmid_kernel *shp, int cmd);
1650 int (*shm_shmat) (struct shmid_kernel *shp,
1651 char __user *shmaddr, int shmflg);
1652
1653 int (*sem_alloc_security) (struct sem_array *sma);
1654 void (*sem_free_security) (struct sem_array *sma);
1655 int (*sem_associate) (struct sem_array *sma, int semflg);
1656 int (*sem_semctl) (struct sem_array *sma, int cmd);
1657 int (*sem_semop) (struct sem_array *sma,
1658 struct sembuf *sops, unsigned nsops, int alter);
1659
1660 int (*netlink_send) (struct sock *sk, struct sk_buff *skb);
1661
1662 void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1663
1664 int (*getprocattr) (struct task_struct *p, char *name, char **value);
1665 int (*setprocattr) (struct task_struct *p, char *name, void *value, size_t size);
1666 int (*ismaclabel) (const char *name);
1667 int (*secid_to_secctx) (u32 secid, char **secdata, u32 *seclen);
1668 int (*secctx_to_secid) (const char *secdata, u32 seclen, u32 *secid);
1669 void (*release_secctx) (char *secdata, u32 seclen);
1670
1671 int (*inode_notifysecctx)(struct inode *inode, void *ctx, u32 ctxlen);
1672 int (*inode_setsecctx)(struct dentry *dentry, void *ctx, u32 ctxlen);
1673 int (*inode_getsecctx)(struct inode *inode, void **ctx, u32 *ctxlen);
1674
1675 #ifdef CONFIG_SECURITY_NETWORK
1676 int (*unix_stream_connect) (struct sock *sock, struct sock *other, struct sock *newsk);
1677 int (*unix_may_send) (struct socket *sock, struct socket *other);
1678
1679 int (*socket_create) (int family, int type, int protocol, int kern);
1680 int (*socket_post_create) (struct socket *sock, int family,
1681 int type, int protocol, int kern);
1682 int (*socket_bind) (struct socket *sock,
1683 struct sockaddr *address, int addrlen);
1684 int (*socket_connect) (struct socket *sock,
1685 struct sockaddr *address, int addrlen);
1686 int (*socket_listen) (struct socket *sock, int backlog);
1687 int (*socket_accept) (struct socket *sock, struct socket *newsock);
1688 int (*socket_sendmsg) (struct socket *sock,
1689 struct msghdr *msg, int size);
1690 int (*socket_recvmsg) (struct socket *sock,
1691 struct msghdr *msg, int size, int flags);
1692 int (*socket_getsockname) (struct socket *sock);
1693 int (*socket_getpeername) (struct socket *sock);
1694 int (*socket_getsockopt) (struct socket *sock, int level, int optname);
1695 int (*socket_setsockopt) (struct socket *sock, int level, int optname);
1696 int (*socket_shutdown) (struct socket *sock, int how);
1697 int (*socket_sock_rcv_skb) (struct sock *sk, struct sk_buff *skb);
1698 int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
1699 int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
1700 int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
1701 void (*sk_free_security) (struct sock *sk);
1702 void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
1703 void (*sk_getsecid) (struct sock *sk, u32 *secid);
1704 void (*sock_graft) (struct sock *sk, struct socket *parent);
1705 int (*inet_conn_request) (struct sock *sk, struct sk_buff *skb,
1706 struct request_sock *req);
1707 void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req);
1708 void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb);
1709 int (*secmark_relabel_packet) (u32 secid);
1710 void (*secmark_refcount_inc) (void);
1711 void (*secmark_refcount_dec) (void);
1712 void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
1713 int (*tun_dev_alloc_security) (void **security);
1714 void (*tun_dev_free_security) (void *security);
1715 int (*tun_dev_create) (void);
1716 int (*tun_dev_attach_queue) (void *security);
1717 int (*tun_dev_attach) (struct sock *sk, void *security);
1718 int (*tun_dev_open) (void *security);
1719 #endif /* CONFIG_SECURITY_NETWORK */
1720
1721 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1722 int (*xfrm_policy_alloc_security) (struct xfrm_sec_ctx **ctxp,
1723 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
1724 int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
1725 void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
1726 int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
1727 int (*xfrm_state_alloc) (struct xfrm_state *x,
1728 struct xfrm_user_sec_ctx *sec_ctx);
1729 int (*xfrm_state_alloc_acquire) (struct xfrm_state *x,
1730 struct xfrm_sec_ctx *polsec,
1731 u32 secid);
1732 void (*xfrm_state_free_security) (struct xfrm_state *x);
1733 int (*xfrm_state_delete_security) (struct xfrm_state *x);
1734 int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1735 int (*xfrm_state_pol_flow_match) (struct xfrm_state *x,
1736 struct xfrm_policy *xp,
1737 const struct flowi *fl);
1738 int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall);
1739 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1740
1741 /* key management security hooks */
1742 #ifdef CONFIG_KEYS
1743 int (*key_alloc) (struct key *key, const struct cred *cred, unsigned long flags);
1744 void (*key_free) (struct key *key);
1745 int (*key_permission) (key_ref_t key_ref,
1746 const struct cred *cred,
1747 unsigned perm);
1748 int (*key_getsecurity)(struct key *key, char **_buffer);
1749 #endif /* CONFIG_KEYS */
1750
1751 #ifdef CONFIG_AUDIT
1752 int (*audit_rule_init) (u32 field, u32 op, char *rulestr, void **lsmrule);
1753 int (*audit_rule_known) (struct audit_krule *krule);
1754 int (*audit_rule_match) (u32 secid, u32 field, u32 op, void *lsmrule,
1755 struct audit_context *actx);
1756 void (*audit_rule_free) (void *lsmrule);
1757 #endif /* CONFIG_AUDIT */
1758 };
1759
1760 /* prototypes */
1761 extern int security_init(void);
1762 extern int security_module_enable(struct security_operations *ops);
1763 extern int register_security(struct security_operations *ops);
1764 extern void __init security_fixup_ops(struct security_operations *ops);
1765
1766
1767 /* Security operations */
1768 int security_binder_set_context_mgr(struct task_struct *mgr);
1769 int security_binder_transaction(struct task_struct *from,
1770 struct task_struct *to);
1771 int security_binder_transfer_binder(struct task_struct *from,
1772 struct task_struct *to);
1773 int security_binder_transfer_file(struct task_struct *from,
1774 struct task_struct *to, struct file *file);
1775 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
1776 int security_ptrace_traceme(struct task_struct *parent);
1777 int security_capget(struct task_struct *target,
1778 kernel_cap_t *effective,
1779 kernel_cap_t *inheritable,
1780 kernel_cap_t *permitted);
1781 int security_capset(struct cred *new, const struct cred *old,
1782 const kernel_cap_t *effective,
1783 const kernel_cap_t *inheritable,
1784 const kernel_cap_t *permitted);
1785 int security_capable(const struct cred *cred, struct user_namespace *ns,
1786 int cap);
1787 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
1788 int cap);
1789 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
1790 int security_quota_on(struct dentry *dentry);
1791 int security_syslog(int type);
1792 int security_settime(const struct timespec *ts, const struct timezone *tz);
1793 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
1794 int security_bprm_set_creds(struct linux_binprm *bprm);
1795 int security_bprm_check(struct linux_binprm *bprm);
1796 void security_bprm_committing_creds(struct linux_binprm *bprm);
1797 void security_bprm_committed_creds(struct linux_binprm *bprm);
1798 int security_bprm_secureexec(struct linux_binprm *bprm);
1799 int security_sb_alloc(struct super_block *sb);
1800 void security_sb_free(struct super_block *sb);
1801 int security_sb_copy_data(char *orig, char *copy);
1802 int security_sb_remount(struct super_block *sb, void *data);
1803 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
1804 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
1805 int security_sb_statfs(struct dentry *dentry);
1806 int security_sb_mount(const char *dev_name, struct path *path,
1807 const char *type, unsigned long flags, void *data);
1808 int security_sb_umount(struct vfsmount *mnt, int flags);
1809 int security_sb_pivotroot(struct path *old_path, struct path *new_path);
1810 int security_sb_set_mnt_opts(struct super_block *sb,
1811 struct security_mnt_opts *opts,
1812 unsigned long kern_flags,
1813 unsigned long *set_kern_flags);
1814 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
1815 struct super_block *newsb);
1816 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
1817 int security_dentry_init_security(struct dentry *dentry, int mode,
1818 struct qstr *name, void **ctx,
1819 u32 *ctxlen);
1820
1821 int security_inode_alloc(struct inode *inode);
1822 void security_inode_free(struct inode *inode);
1823 int security_inode_init_security(struct inode *inode, struct inode *dir,
1824 const struct qstr *qstr,
1825 initxattrs initxattrs, void *fs_data);
1826 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
1827 const struct qstr *qstr, const char **name,
1828 void **value, size_t *len);
1829 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
1830 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1831 struct dentry *new_dentry);
1832 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
1833 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
1834 const char *old_name);
1835 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
1836 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
1837 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
1838 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
1839 struct inode *new_dir, struct dentry *new_dentry,
1840 unsigned int flags);
1841 int security_inode_readlink(struct dentry *dentry);
1842 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
1843 int security_inode_permission(struct inode *inode, int mask);
1844 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
1845 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
1846 int security_inode_setxattr(struct dentry *dentry, const char *name,
1847 const void *value, size_t size, int flags);
1848 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1849 const void *value, size_t size, int flags);
1850 int security_inode_getxattr(struct dentry *dentry, const char *name);
1851 int security_inode_listxattr(struct dentry *dentry);
1852 int security_inode_removexattr(struct dentry *dentry, const char *name);
1853 int security_inode_need_killpriv(struct dentry *dentry);
1854 int security_inode_killpriv(struct dentry *dentry);
1855 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
1856 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1857 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
1858 void security_inode_getsecid(const struct inode *inode, u32 *secid);
1859 int security_file_permission(struct file *file, int mask);
1860 int security_file_alloc(struct file *file);
1861 void security_file_free(struct file *file);
1862 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
1863 int security_mmap_file(struct file *file, unsigned long prot,
1864 unsigned long flags);
1865 int security_mmap_addr(unsigned long addr);
1866 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1867 unsigned long prot);
1868 int security_file_lock(struct file *file, unsigned int cmd);
1869 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
1870 void security_file_set_fowner(struct file *file);
1871 int security_file_send_sigiotask(struct task_struct *tsk,
1872 struct fown_struct *fown, int sig);
1873 int security_file_receive(struct file *file);
1874 int security_file_open(struct file *file, const struct cred *cred);
1875 int security_task_create(unsigned long clone_flags);
1876 void security_task_free(struct task_struct *task);
1877 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
1878 void security_cred_free(struct cred *cred);
1879 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
1880 void security_transfer_creds(struct cred *new, const struct cred *old);
1881 int security_kernel_act_as(struct cred *new, u32 secid);
1882 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
1883 int security_kernel_fw_from_file(struct file *file, char *buf, size_t size);
1884 int security_kernel_module_request(char *kmod_name);
1885 int security_kernel_module_from_file(struct file *file);
1886 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1887 int flags);
1888 int security_task_setpgid(struct task_struct *p, pid_t pgid);
1889 int security_task_getpgid(struct task_struct *p);
1890 int security_task_getsid(struct task_struct *p);
1891 void security_task_getsecid(struct task_struct *p, u32 *secid);
1892 int security_task_setnice(struct task_struct *p, int nice);
1893 int security_task_setioprio(struct task_struct *p, int ioprio);
1894 int security_task_getioprio(struct task_struct *p);
1895 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
1896 struct rlimit *new_rlim);
1897 int security_task_setscheduler(struct task_struct *p);
1898 int security_task_getscheduler(struct task_struct *p);
1899 int security_task_movememory(struct task_struct *p);
1900 int security_task_kill(struct task_struct *p, struct siginfo *info,
1901 int sig, u32 secid);
1902 int security_task_wait(struct task_struct *p);
1903 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1904 unsigned long arg4, unsigned long arg5);
1905 void security_task_to_inode(struct task_struct *p, struct inode *inode);
1906 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
1907 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
1908 int security_msg_msg_alloc(struct msg_msg *msg);
1909 void security_msg_msg_free(struct msg_msg *msg);
1910 int security_msg_queue_alloc(struct msg_queue *msq);
1911 void security_msg_queue_free(struct msg_queue *msq);
1912 int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
1913 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
1914 int security_msg_queue_msgsnd(struct msg_queue *msq,
1915 struct msg_msg *msg, int msqflg);
1916 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1917 struct task_struct *target, long type, int mode);
1918 int security_shm_alloc(struct shmid_kernel *shp);
1919 void security_shm_free(struct shmid_kernel *shp);
1920 int security_shm_associate(struct shmid_kernel *shp, int shmflg);
1921 int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
1922 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
1923 int security_sem_alloc(struct sem_array *sma);
1924 void security_sem_free(struct sem_array *sma);
1925 int security_sem_associate(struct sem_array *sma, int semflg);
1926 int security_sem_semctl(struct sem_array *sma, int cmd);
1927 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1928 unsigned nsops, int alter);
1929 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
1930 int security_getprocattr(struct task_struct *p, char *name, char **value);
1931 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
1932 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
1933 int security_ismaclabel(const char *name);
1934 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
1935 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
1936 void security_release_secctx(char *secdata, u32 seclen);
1937
1938 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
1939 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
1940 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
1941 #else /* CONFIG_SECURITY */
1942 struct security_mnt_opts {
1943 };
1944
1945 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
1946 {
1947 }
1948
1949 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
1950 {
1951 }
1952
1953 /*
1954 * This is the default capabilities functionality. Most of these functions
1955 * are just stubbed out, but a few must call the proper capable code.
1956 */
1957
1958 static inline int security_init(void)
1959 {
1960 return 0;
1961 }
1962
1963 static inline int security_binder_set_context_mgr(struct task_struct *mgr)
1964 {
1965 return 0;
1966 }
1967
1968 static inline int security_binder_transaction(struct task_struct *from,
1969 struct task_struct *to)
1970 {
1971 return 0;
1972 }
1973
1974 static inline int security_binder_transfer_binder(struct task_struct *from,
1975 struct task_struct *to)
1976 {
1977 return 0;
1978 }
1979
1980 static inline int security_binder_transfer_file(struct task_struct *from,
1981 struct task_struct *to,
1982 struct file *file)
1983 {
1984 return 0;
1985 }
1986
1987 static inline int security_ptrace_access_check(struct task_struct *child,
1988 unsigned int mode)
1989 {
1990 return cap_ptrace_access_check(child, mode);
1991 }
1992
1993 static inline int security_ptrace_traceme(struct task_struct *parent)
1994 {
1995 return cap_ptrace_traceme(parent);
1996 }
1997
1998 static inline int security_capget(struct task_struct *target,
1999 kernel_cap_t *effective,
2000 kernel_cap_t *inheritable,
2001 kernel_cap_t *permitted)
2002 {
2003 return cap_capget(target, effective, inheritable, permitted);
2004 }
2005
2006 static inline int security_capset(struct cred *new,
2007 const struct cred *old,
2008 const kernel_cap_t *effective,
2009 const kernel_cap_t *inheritable,
2010 const kernel_cap_t *permitted)
2011 {
2012 return cap_capset(new, old, effective, inheritable, permitted);
2013 }
2014
2015 static inline int security_capable(const struct cred *cred,
2016 struct user_namespace *ns, int cap)
2017 {
2018 return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT);
2019 }
2020
2021 static inline int security_capable_noaudit(const struct cred *cred,
2022 struct user_namespace *ns, int cap) {
2023 return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
2024 }
2025
2026 static inline int security_quotactl(int cmds, int type, int id,
2027 struct super_block *sb)
2028 {
2029 return 0;
2030 }
2031
2032 static inline int security_quota_on(struct dentry *dentry)
2033 {
2034 return 0;
2035 }
2036
2037 static inline int security_syslog(int type)
2038 {
2039 return 0;
2040 }
2041
2042 static inline int security_settime(const struct timespec *ts,
2043 const struct timezone *tz)
2044 {
2045 return cap_settime(ts, tz);
2046 }
2047
2048 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
2049 {
2050 return cap_vm_enough_memory(mm, pages);
2051 }
2052
2053 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
2054 {
2055 return cap_bprm_set_creds(bprm);
2056 }
2057
2058 static inline int security_bprm_check(struct linux_binprm *bprm)
2059 {
2060 return 0;
2061 }
2062
2063 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
2064 {
2065 }
2066
2067 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
2068 {
2069 }
2070
2071 static inline int security_bprm_secureexec(struct linux_binprm *bprm)
2072 {
2073 return cap_bprm_secureexec(bprm);
2074 }
2075
2076 static inline int security_sb_alloc(struct super_block *sb)
2077 {
2078 return 0;
2079 }
2080
2081 static inline void security_sb_free(struct super_block *sb)
2082 { }
2083
2084 static inline int security_sb_copy_data(char *orig, char *copy)
2085 {
2086 return 0;
2087 }
2088
2089 static inline int security_sb_remount(struct super_block *sb, void *data)
2090 {
2091 return 0;
2092 }
2093
2094 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
2095 {
2096 return 0;
2097 }
2098
2099 static inline int security_sb_show_options(struct seq_file *m,
2100 struct super_block *sb)
2101 {
2102 return 0;
2103 }
2104
2105 static inline int security_sb_statfs(struct dentry *dentry)
2106 {
2107 return 0;
2108 }
2109
2110 static inline int security_sb_mount(const char *dev_name, struct path *path,
2111 const char *type, unsigned long flags,
2112 void *data)
2113 {
2114 return 0;
2115 }
2116
2117 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
2118 {
2119 return 0;
2120 }
2121
2122 static inline int security_sb_pivotroot(struct path *old_path,
2123 struct path *new_path)
2124 {
2125 return 0;
2126 }
2127
2128 static inline int security_sb_set_mnt_opts(struct super_block *sb,
2129 struct security_mnt_opts *opts,
2130 unsigned long kern_flags,
2131 unsigned long *set_kern_flags)
2132 {
2133 return 0;
2134 }
2135
2136 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
2137 struct super_block *newsb)
2138 {
2139 return 0;
2140 }
2141
2142 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
2143 {
2144 return 0;
2145 }
2146
2147 static inline int security_inode_alloc(struct inode *inode)
2148 {
2149 return 0;
2150 }
2151
2152 static inline void security_inode_free(struct inode *inode)
2153 { }
2154
2155 static inline int security_dentry_init_security(struct dentry *dentry,
2156 int mode,
2157 struct qstr *name,
2158 void **ctx,
2159 u32 *ctxlen)
2160 {
2161 return -EOPNOTSUPP;
2162 }
2163
2164
2165 static inline int security_inode_init_security(struct inode *inode,
2166 struct inode *dir,
2167 const struct qstr *qstr,
2168 const initxattrs xattrs,
2169 void *fs_data)
2170 {
2171 return 0;
2172 }
2173
2174 static inline int security_old_inode_init_security(struct inode *inode,
2175 struct inode *dir,
2176 const struct qstr *qstr,
2177 const char **name,
2178 void **value, size_t *len)
2179 {
2180 return -EOPNOTSUPP;
2181 }
2182
2183 static inline int security_inode_create(struct inode *dir,
2184 struct dentry *dentry,
2185 umode_t mode)
2186 {
2187 return 0;
2188 }
2189
2190 static inline int security_inode_link(struct dentry *old_dentry,
2191 struct inode *dir,
2192 struct dentry *new_dentry)
2193 {
2194 return 0;
2195 }
2196
2197 static inline int security_inode_unlink(struct inode *dir,
2198 struct dentry *dentry)
2199 {
2200 return 0;
2201 }
2202
2203 static inline int security_inode_symlink(struct inode *dir,
2204 struct dentry *dentry,
2205 const char *old_name)
2206 {
2207 return 0;
2208 }
2209
2210 static inline int security_inode_mkdir(struct inode *dir,
2211 struct dentry *dentry,
2212 int mode)
2213 {
2214 return 0;
2215 }
2216
2217 static inline int security_inode_rmdir(struct inode *dir,
2218 struct dentry *dentry)
2219 {
2220 return 0;
2221 }
2222
2223 static inline int security_inode_mknod(struct inode *dir,
2224 struct dentry *dentry,
2225 int mode, dev_t dev)
2226 {
2227 return 0;
2228 }
2229
2230 static inline int security_inode_rename(struct inode *old_dir,
2231 struct dentry *old_dentry,
2232 struct inode *new_dir,
2233 struct dentry *new_dentry,
2234 unsigned int flags)
2235 {
2236 return 0;
2237 }
2238
2239 static inline int security_inode_readlink(struct dentry *dentry)
2240 {
2241 return 0;
2242 }
2243
2244 static inline int security_inode_follow_link(struct dentry *dentry,
2245 struct nameidata *nd)
2246 {
2247 return 0;
2248 }
2249
2250 static inline int security_inode_permission(struct inode *inode, int mask)
2251 {
2252 return 0;
2253 }
2254
2255 static inline int security_inode_setattr(struct dentry *dentry,
2256 struct iattr *attr)
2257 {
2258 return 0;
2259 }
2260
2261 static inline int security_inode_getattr(struct vfsmount *mnt,
2262 struct dentry *dentry)
2263 {
2264 return 0;
2265 }
2266
2267 static inline int security_inode_setxattr(struct dentry *dentry,
2268 const char *name, const void *value, size_t size, int flags)
2269 {
2270 return cap_inode_setxattr(dentry, name, value, size, flags);
2271 }
2272
2273 static inline void security_inode_post_setxattr(struct dentry *dentry,
2274 const char *name, const void *value, size_t size, int flags)
2275 { }
2276
2277 static inline int security_inode_getxattr(struct dentry *dentry,
2278 const char *name)
2279 {
2280 return 0;
2281 }
2282
2283 static inline int security_inode_listxattr(struct dentry *dentry)
2284 {
2285 return 0;
2286 }
2287
2288 static inline int security_inode_removexattr(struct dentry *dentry,
2289 const char *name)
2290 {
2291 return cap_inode_removexattr(dentry, name);
2292 }
2293
2294 static inline int security_inode_need_killpriv(struct dentry *dentry)
2295 {
2296 return cap_inode_need_killpriv(dentry);
2297 }
2298
2299 static inline int security_inode_killpriv(struct dentry *dentry)
2300 {
2301 return cap_inode_killpriv(dentry);
2302 }
2303
2304 static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
2305 {
2306 return -EOPNOTSUPP;
2307 }
2308
2309 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
2310 {
2311 return -EOPNOTSUPP;
2312 }
2313
2314 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
2315 {
2316 return 0;
2317 }
2318
2319 static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
2320 {
2321 *secid = 0;
2322 }
2323
2324 static inline int security_file_permission(struct file *file, int mask)
2325 {
2326 return 0;
2327 }
2328
2329 static inline int security_file_alloc(struct file *file)
2330 {
2331 return 0;
2332 }
2333
2334 static inline void security_file_free(struct file *file)
2335 { }
2336
2337 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
2338 unsigned long arg)
2339 {
2340 return 0;
2341 }
2342
2343 static inline int security_mmap_file(struct file *file, unsigned long prot,
2344 unsigned long flags)
2345 {
2346 return 0;
2347 }
2348
2349 static inline int security_mmap_addr(unsigned long addr)
2350 {
2351 return cap_mmap_addr(addr);
2352 }
2353
2354 static inline int security_file_mprotect(struct vm_area_struct *vma,
2355 unsigned long reqprot,
2356 unsigned long prot)
2357 {
2358 return 0;
2359 }
2360
2361 static inline int security_file_lock(struct file *file, unsigned int cmd)
2362 {
2363 return 0;
2364 }
2365
2366 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
2367 unsigned long arg)
2368 {
2369 return 0;
2370 }
2371
2372 static inline void security_file_set_fowner(struct file *file)
2373 {
2374 return;
2375 }
2376
2377 static inline int security_file_send_sigiotask(struct task_struct *tsk,
2378 struct fown_struct *fown,
2379 int sig)
2380 {
2381 return 0;
2382 }
2383
2384 static inline int security_file_receive(struct file *file)
2385 {
2386 return 0;
2387 }
2388
2389 static inline int security_file_open(struct file *file,
2390 const struct cred *cred)
2391 {
2392 return 0;
2393 }
2394
2395 static inline int security_task_create(unsigned long clone_flags)
2396 {
2397 return 0;
2398 }
2399
2400 static inline void security_task_free(struct task_struct *task)
2401 { }
2402
2403 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
2404 {
2405 return 0;
2406 }
2407
2408 static inline void security_cred_free(struct cred *cred)
2409 { }
2410
2411 static inline int security_prepare_creds(struct cred *new,
2412 const struct cred *old,
2413 gfp_t gfp)
2414 {
2415 return 0;
2416 }
2417
2418 static inline void security_transfer_creds(struct cred *new,
2419 const struct cred *old)
2420 {
2421 }
2422
2423 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
2424 {
2425 return 0;
2426 }
2427
2428 static inline int security_kernel_create_files_as(struct cred *cred,
2429 struct inode *inode)
2430 {
2431 return 0;
2432 }
2433
2434 static inline int security_kernel_fw_from_file(struct file *file,
2435 char *buf, size_t size)
2436 {
2437 return 0;
2438 }
2439
2440 static inline int security_kernel_module_request(char *kmod_name)
2441 {
2442 return 0;
2443 }
2444
2445 static inline int security_kernel_module_from_file(struct file *file)
2446 {
2447 return 0;
2448 }
2449
2450 static inline int security_task_fix_setuid(struct cred *new,
2451 const struct cred *old,
2452 int flags)
2453 {
2454 return cap_task_fix_setuid(new, old, flags);
2455 }
2456
2457 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
2458 {
2459 return 0;
2460 }
2461
2462 static inline int security_task_getpgid(struct task_struct *p)
2463 {
2464 return 0;
2465 }
2466
2467 static inline int security_task_getsid(struct task_struct *p)
2468 {
2469 return 0;
2470 }
2471
2472 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
2473 {
2474 *secid = 0;
2475 }
2476
2477 static inline int security_task_setnice(struct task_struct *p, int nice)
2478 {
2479 return cap_task_setnice(p, nice);
2480 }
2481
2482 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
2483 {
2484 return cap_task_setioprio(p, ioprio);
2485 }
2486
2487 static inline int security_task_getioprio(struct task_struct *p)
2488 {
2489 return 0;
2490 }
2491
2492 static inline int security_task_setrlimit(struct task_struct *p,
2493 unsigned int resource,
2494 struct rlimit *new_rlim)
2495 {
2496 return 0;
2497 }
2498
2499 static inline int security_task_setscheduler(struct task_struct *p)
2500 {
2501 return cap_task_setscheduler(p);
2502 }
2503
2504 static inline int security_task_getscheduler(struct task_struct *p)
2505 {
2506 return 0;
2507 }
2508
2509 static inline int security_task_movememory(struct task_struct *p)
2510 {
2511 return 0;
2512 }
2513
2514 static inline int security_task_kill(struct task_struct *p,
2515 struct siginfo *info, int sig,
2516 u32 secid)
2517 {
2518 return 0;
2519 }
2520
2521 static inline int security_task_wait(struct task_struct *p)
2522 {
2523 return 0;
2524 }
2525
2526 static inline int security_task_prctl(int option, unsigned long arg2,
2527 unsigned long arg3,
2528 unsigned long arg4,
2529 unsigned long arg5)
2530 {
2531 return cap_task_prctl(option, arg2, arg3, arg3, arg5);
2532 }
2533
2534 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
2535 { }
2536
2537 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
2538 short flag)
2539 {
2540 return 0;
2541 }
2542
2543 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
2544 {
2545 *secid = 0;
2546 }
2547
2548 static inline int security_msg_msg_alloc(struct msg_msg *msg)
2549 {
2550 return 0;
2551 }
2552
2553 static inline void security_msg_msg_free(struct msg_msg *msg)
2554 { }
2555
2556 static inline int security_msg_queue_alloc(struct msg_queue *msq)
2557 {
2558 return 0;
2559 }
2560
2561 static inline void security_msg_queue_free(struct msg_queue *msq)
2562 { }
2563
2564 static inline int security_msg_queue_associate(struct msg_queue *msq,
2565 int msqflg)
2566 {
2567 return 0;
2568 }
2569
2570 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
2571 {
2572 return 0;
2573 }
2574
2575 static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
2576 struct msg_msg *msg, int msqflg)
2577 {
2578 return 0;
2579 }
2580
2581 static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
2582 struct msg_msg *msg,
2583 struct task_struct *target,
2584 long type, int mode)
2585 {
2586 return 0;
2587 }
2588
2589 static inline int security_shm_alloc(struct shmid_kernel *shp)
2590 {
2591 return 0;
2592 }
2593
2594 static inline void security_shm_free(struct shmid_kernel *shp)
2595 { }
2596
2597 static inline int security_shm_associate(struct shmid_kernel *shp,
2598 int shmflg)
2599 {
2600 return 0;
2601 }
2602
2603 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
2604 {
2605 return 0;
2606 }
2607
2608 static inline int security_shm_shmat(struct shmid_kernel *shp,
2609 char __user *shmaddr, int shmflg)
2610 {
2611 return 0;
2612 }
2613
2614 static inline int security_sem_alloc(struct sem_array *sma)
2615 {
2616 return 0;
2617 }
2618
2619 static inline void security_sem_free(struct sem_array *sma)
2620 { }
2621
2622 static inline int security_sem_associate(struct sem_array *sma, int semflg)
2623 {
2624 return 0;
2625 }
2626
2627 static inline int security_sem_semctl(struct sem_array *sma, int cmd)
2628 {
2629 return 0;
2630 }
2631
2632 static inline int security_sem_semop(struct sem_array *sma,
2633 struct sembuf *sops, unsigned nsops,
2634 int alter)
2635 {
2636 return 0;
2637 }
2638
2639 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
2640 { }
2641
2642 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
2643 {
2644 return -EINVAL;
2645 }
2646
2647 static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2648 {
2649 return -EINVAL;
2650 }
2651
2652 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
2653 {
2654 return cap_netlink_send(sk, skb);
2655 }
2656
2657 static inline int security_ismaclabel(const char *name)
2658 {
2659 return 0;
2660 }
2661
2662 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2663 {
2664 return -EOPNOTSUPP;
2665 }
2666
2667 static inline int security_secctx_to_secid(const char *secdata,
2668 u32 seclen,
2669 u32 *secid)
2670 {
2671 return -EOPNOTSUPP;
2672 }
2673
2674 static inline void security_release_secctx(char *secdata, u32 seclen)
2675 {
2676 }
2677
2678 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
2679 {
2680 return -EOPNOTSUPP;
2681 }
2682 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
2683 {
2684 return -EOPNOTSUPP;
2685 }
2686 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
2687 {
2688 return -EOPNOTSUPP;
2689 }
2690 #endif /* CONFIG_SECURITY */
2691
2692 #ifdef CONFIG_SECURITY_NETWORK
2693
2694 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
2695 int security_unix_may_send(struct socket *sock, struct socket *other);
2696 int security_socket_create(int family, int type, int protocol, int kern);
2697 int security_socket_post_create(struct socket *sock, int family,
2698 int type, int protocol, int kern);
2699 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
2700 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
2701 int security_socket_listen(struct socket *sock, int backlog);
2702 int security_socket_accept(struct socket *sock, struct socket *newsock);
2703 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
2704 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2705 int size, int flags);
2706 int security_socket_getsockname(struct socket *sock);
2707 int security_socket_getpeername(struct socket *sock);
2708 int security_socket_getsockopt(struct socket *sock, int level, int optname);
2709 int security_socket_setsockopt(struct socket *sock, int level, int optname);
2710 int security_socket_shutdown(struct socket *sock, int how);
2711 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
2712 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2713 int __user *optlen, unsigned len);
2714 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
2715 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
2716 void security_sk_free(struct sock *sk);
2717 void security_sk_clone(const struct sock *sk, struct sock *newsk);
2718 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
2719 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
2720 void security_sock_graft(struct sock*sk, struct socket *parent);
2721 int security_inet_conn_request(struct sock *sk,
2722 struct sk_buff *skb, struct request_sock *req);
2723 void security_inet_csk_clone(struct sock *newsk,
2724 const struct request_sock *req);
2725 void security_inet_conn_established(struct sock *sk,
2726 struct sk_buff *skb);
2727 int security_secmark_relabel_packet(u32 secid);
2728 void security_secmark_refcount_inc(void);
2729 void security_secmark_refcount_dec(void);
2730 int security_tun_dev_alloc_security(void **security);
2731 void security_tun_dev_free_security(void *security);
2732 int security_tun_dev_create(void);
2733 int security_tun_dev_attach_queue(void *security);
2734 int security_tun_dev_attach(struct sock *sk, void *security);
2735 int security_tun_dev_open(void *security);
2736
2737 #else /* CONFIG_SECURITY_NETWORK */
2738 static inline int security_unix_stream_connect(struct sock *sock,
2739 struct sock *other,
2740 struct sock *newsk)
2741 {
2742 return 0;
2743 }
2744
2745 static inline int security_unix_may_send(struct socket *sock,
2746 struct socket *other)
2747 {
2748 return 0;
2749 }
2750
2751 static inline int security_socket_create(int family, int type,
2752 int protocol, int kern)
2753 {
2754 return 0;
2755 }
2756
2757 static inline int security_socket_post_create(struct socket *sock,
2758 int family,
2759 int type,
2760 int protocol, int kern)
2761 {
2762 return 0;
2763 }
2764
2765 static inline int security_socket_bind(struct socket *sock,
2766 struct sockaddr *address,
2767 int addrlen)
2768 {
2769 return 0;
2770 }
2771
2772 static inline int security_socket_connect(struct socket *sock,
2773 struct sockaddr *address,
2774 int addrlen)
2775 {
2776 return 0;
2777 }
2778
2779 static inline int security_socket_listen(struct socket *sock, int backlog)
2780 {
2781 return 0;
2782 }
2783
2784 static inline int security_socket_accept(struct socket *sock,
2785 struct socket *newsock)
2786 {
2787 return 0;
2788 }
2789
2790 static inline int security_socket_sendmsg(struct socket *sock,
2791 struct msghdr *msg, int size)
2792 {
2793 return 0;
2794 }
2795
2796 static inline int security_socket_recvmsg(struct socket *sock,
2797 struct msghdr *msg, int size,
2798 int flags)
2799 {
2800 return 0;
2801 }
2802
2803 static inline int security_socket_getsockname(struct socket *sock)
2804 {
2805 return 0;
2806 }
2807
2808 static inline int security_socket_getpeername(struct socket *sock)
2809 {
2810 return 0;
2811 }
2812
2813 static inline int security_socket_getsockopt(struct socket *sock,
2814 int level, int optname)
2815 {
2816 return 0;
2817 }
2818
2819 static inline int security_socket_setsockopt(struct socket *sock,
2820 int level, int optname)
2821 {
2822 return 0;
2823 }
2824
2825 static inline int security_socket_shutdown(struct socket *sock, int how)
2826 {
2827 return 0;
2828 }
2829 static inline int security_sock_rcv_skb(struct sock *sk,
2830 struct sk_buff *skb)
2831 {
2832 return 0;
2833 }
2834
2835 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2836 int __user *optlen, unsigned len)
2837 {
2838 return -ENOPROTOOPT;
2839 }
2840
2841 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
2842 {
2843 return -ENOPROTOOPT;
2844 }
2845
2846 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2847 {
2848 return 0;
2849 }
2850
2851 static inline void security_sk_free(struct sock *sk)
2852 {
2853 }
2854
2855 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
2856 {
2857 }
2858
2859 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
2860 {
2861 }
2862
2863 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2864 {
2865 }
2866
2867 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
2868 {
2869 }
2870
2871 static inline int security_inet_conn_request(struct sock *sk,
2872 struct sk_buff *skb, struct request_sock *req)
2873 {
2874 return 0;
2875 }
2876
2877 static inline void security_inet_csk_clone(struct sock *newsk,
2878 const struct request_sock *req)
2879 {
2880 }
2881
2882 static inline void security_inet_conn_established(struct sock *sk,
2883 struct sk_buff *skb)
2884 {
2885 }
2886
2887 static inline int security_secmark_relabel_packet(u32 secid)
2888 {
2889 return 0;
2890 }
2891
2892 static inline void security_secmark_refcount_inc(void)
2893 {
2894 }
2895
2896 static inline void security_secmark_refcount_dec(void)
2897 {
2898 }
2899
2900 static inline int security_tun_dev_alloc_security(void **security)
2901 {
2902 return 0;
2903 }
2904
2905 static inline void security_tun_dev_free_security(void *security)
2906 {
2907 }
2908
2909 static inline int security_tun_dev_create(void)
2910 {
2911 return 0;
2912 }
2913
2914 static inline int security_tun_dev_attach_queue(void *security)
2915 {
2916 return 0;
2917 }
2918
2919 static inline int security_tun_dev_attach(struct sock *sk, void *security)
2920 {
2921 return 0;
2922 }
2923
2924 static inline int security_tun_dev_open(void *security)
2925 {
2926 return 0;
2927 }
2928 #endif /* CONFIG_SECURITY_NETWORK */
2929
2930 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2931
2932 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
2933 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
2934 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
2935 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
2936 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
2937 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
2938 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2939 struct xfrm_sec_ctx *polsec, u32 secid);
2940 int security_xfrm_state_delete(struct xfrm_state *x);
2941 void security_xfrm_state_free(struct xfrm_state *x);
2942 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
2943 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2944 struct xfrm_policy *xp,
2945 const struct flowi *fl);
2946 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
2947 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
2948
2949 #else /* CONFIG_SECURITY_NETWORK_XFRM */
2950
2951 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
2952 struct xfrm_user_sec_ctx *sec_ctx,
2953 gfp_t gfp)
2954 {
2955 return 0;
2956 }
2957
2958 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
2959 {
2960 return 0;
2961 }
2962
2963 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
2964 {
2965 }
2966
2967 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
2968 {
2969 return 0;
2970 }
2971
2972 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
2973 struct xfrm_user_sec_ctx *sec_ctx)
2974 {
2975 return 0;
2976 }
2977
2978 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2979 struct xfrm_sec_ctx *polsec, u32 secid)
2980 {
2981 return 0;
2982 }
2983
2984 static inline void security_xfrm_state_free(struct xfrm_state *x)
2985 {
2986 }
2987
2988 static inline int security_xfrm_state_delete(struct xfrm_state *x)
2989 {
2990 return 0;
2991 }
2992
2993 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
2994 {
2995 return 0;
2996 }
2997
2998 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2999 struct xfrm_policy *xp, const struct flowi *fl)
3000 {
3001 return 1;
3002 }
3003
3004 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
3005 {
3006 return 0;
3007 }
3008
3009 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
3010 {
3011 }
3012
3013 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
3014
3015 #ifdef CONFIG_SECURITY_PATH
3016 int security_path_unlink(struct path *dir, struct dentry *dentry);
3017 int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode);
3018 int security_path_rmdir(struct path *dir, struct dentry *dentry);
3019 int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode,
3020 unsigned int dev);
3021 int security_path_truncate(struct path *path);
3022 int security_path_symlink(struct path *dir, struct dentry *dentry,
3023 const char *old_name);
3024 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
3025 struct dentry *new_dentry);
3026 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
3027 struct path *new_dir, struct dentry *new_dentry,
3028 unsigned int flags);
3029 int security_path_chmod(struct path *path, umode_t mode);
3030 int security_path_chown(struct path *path, kuid_t uid, kgid_t gid);
3031 int security_path_chroot(struct path *path);
3032 #else /* CONFIG_SECURITY_PATH */
3033 static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
3034 {
3035 return 0;
3036 }
3037
3038 static inline int security_path_mkdir(struct path *dir, struct dentry *dentry,
3039 umode_t mode)
3040 {
3041 return 0;
3042 }
3043
3044 static inline int security_path_rmdir(struct path *dir, struct dentry *dentry)
3045 {
3046 return 0;
3047 }
3048
3049 static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
3050 umode_t mode, unsigned int dev)
3051 {
3052 return 0;
3053 }
3054
3055 static inline int security_path_truncate(struct path *path)
3056 {
3057 return 0;
3058 }
3059
3060 static inline int security_path_symlink(struct path *dir, struct dentry *dentry,
3061 const char *old_name)
3062 {
3063 return 0;
3064 }
3065
3066 static inline int security_path_link(struct dentry *old_dentry,
3067 struct path *new_dir,
3068 struct dentry *new_dentry)
3069 {
3070 return 0;
3071 }
3072
3073 static inline int security_path_rename(struct path *old_dir,
3074 struct dentry *old_dentry,
3075 struct path *new_dir,
3076 struct dentry *new_dentry,
3077 unsigned int flags)
3078 {
3079 return 0;
3080 }
3081
3082 static inline int security_path_chmod(struct path *path, umode_t mode)
3083 {
3084 return 0;
3085 }
3086
3087 static inline int security_path_chown(struct path *path, kuid_t uid, kgid_t gid)
3088 {
3089 return 0;
3090 }
3091
3092 static inline int security_path_chroot(struct path *path)
3093 {
3094 return 0;
3095 }
3096 #endif /* CONFIG_SECURITY_PATH */
3097
3098 #ifdef CONFIG_KEYS
3099 #ifdef CONFIG_SECURITY
3100
3101 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
3102 void security_key_free(struct key *key);
3103 int security_key_permission(key_ref_t key_ref,
3104 const struct cred *cred, unsigned perm);
3105 int security_key_getsecurity(struct key *key, char **_buffer);
3106
3107 #else
3108
3109 static inline int security_key_alloc(struct key *key,
3110 const struct cred *cred,
3111 unsigned long flags)
3112 {
3113 return 0;
3114 }
3115
3116 static inline void security_key_free(struct key *key)
3117 {
3118 }
3119
3120 static inline int security_key_permission(key_ref_t key_ref,
3121 const struct cred *cred,
3122 unsigned perm)
3123 {
3124 return 0;
3125 }
3126
3127 static inline int security_key_getsecurity(struct key *key, char **_buffer)
3128 {
3129 *_buffer = NULL;
3130 return 0;
3131 }
3132
3133 #endif
3134 #endif /* CONFIG_KEYS */
3135
3136 #ifdef CONFIG_AUDIT
3137 #ifdef CONFIG_SECURITY
3138 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
3139 int security_audit_rule_known(struct audit_krule *krule);
3140 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
3141 struct audit_context *actx);
3142 void security_audit_rule_free(void *lsmrule);
3143
3144 #else
3145
3146 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
3147 void **lsmrule)
3148 {
3149 return 0;
3150 }
3151
3152 static inline int security_audit_rule_known(struct audit_krule *krule)
3153 {
3154 return 0;
3155 }
3156
3157 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
3158 void *lsmrule, struct audit_context *actx)
3159 {
3160 return 0;
3161 }
3162
3163 static inline void security_audit_rule_free(void *lsmrule)
3164 { }
3165
3166 #endif /* CONFIG_SECURITY */
3167 #endif /* CONFIG_AUDIT */
3168
3169 #ifdef CONFIG_SECURITYFS
3170
3171 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
3172 struct dentry *parent, void *data,
3173 const struct file_operations *fops);
3174 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
3175 extern void securityfs_remove(struct dentry *dentry);
3176
3177 #else /* CONFIG_SECURITYFS */
3178
3179 static inline struct dentry *securityfs_create_dir(const char *name,
3180 struct dentry *parent)
3181 {
3182 return ERR_PTR(-ENODEV);
3183 }
3184
3185 static inline struct dentry *securityfs_create_file(const char *name,
3186 umode_t mode,
3187 struct dentry *parent,
3188 void *data,
3189 const struct file_operations *fops)
3190 {
3191 return ERR_PTR(-ENODEV);
3192 }
3193
3194 static inline void securityfs_remove(struct dentry *dentry)
3195 {}
3196
3197 #endif
3198
3199 #ifdef CONFIG_SECURITY
3200
3201 static inline char *alloc_secdata(void)
3202 {
3203 return (char *)get_zeroed_page(GFP_KERNEL);
3204 }
3205
3206 static inline void free_secdata(void *secdata)
3207 {
3208 free_page((unsigned long)secdata);
3209 }
3210
3211 #else
3212
3213 static inline char *alloc_secdata(void)
3214 {
3215 return (char *)1;
3216 }
3217
3218 static inline void free_secdata(void *secdata)
3219 { }
3220 #endif /* CONFIG_SECURITY */
3221
3222 #ifdef CONFIG_SECURITY_YAMA
3223 extern int yama_ptrace_access_check(struct task_struct *child,
3224 unsigned int mode);
3225 extern int yama_ptrace_traceme(struct task_struct *parent);
3226 extern void yama_task_free(struct task_struct *task);
3227 extern int yama_task_prctl(int option, unsigned long arg2, unsigned long arg3,
3228 unsigned long arg4, unsigned long arg5);
3229 #else
3230 static inline int yama_ptrace_access_check(struct task_struct *child,
3231 unsigned int mode)
3232 {
3233 return 0;
3234 }
3235
3236 static inline int yama_ptrace_traceme(struct task_struct *parent)
3237 {
3238 return 0;
3239 }
3240
3241 static inline void yama_task_free(struct task_struct *task)
3242 {
3243 }
3244
3245 static inline int yama_task_prctl(int option, unsigned long arg2,
3246 unsigned long arg3, unsigned long arg4,
3247 unsigned long arg5)
3248 {
3249 return -ENOSYS;
3250 }
3251 #endif /* CONFIG_SECURITY_YAMA */
3252
3253 #endif /* ! __LINUX_SECURITY_H */
3254