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)
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.
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.
22 #ifndef __LINUX_SECURITY_H
23 #define __LINUX_SECURITY_H
26 #include <linux/fsnotify.h>
27 #include <linux/binfmts.h>
28 #include <linux/dcache.h>
29 #include <linux/signal.h>
30 #include <linux/resource.h>
31 #include <linux/sem.h>
32 #include <linux/shm.h>
33 #include <linux/mm.h> /* PAGE_ALIGN */
34 #include <linux/msg.h>
35 #include <linux/sched.h>
36 #include <linux/key.h>
37 #include <linux/xfrm.h>
38 #include <linux/slab.h>
41 /* Maximum number of letters for an LSM name string */
42 #define SECURITY_NAME_MAX 10
44 /* If capable should audit the security request */
45 #define SECURITY_CAP_NOAUDIT 0
46 #define SECURITY_CAP_AUDIT 1
52 * These functions are in security/capability.c and are used
53 * as the default capabilities functions
55 extern int cap_capable(struct task_struct
*tsk
, const struct cred
*cred
,
57 extern int cap_settime(const struct timespec
*ts
, const struct timezone
*tz
);
58 extern int cap_ptrace_access_check(struct task_struct
*child
, unsigned int mode
);
59 extern int cap_ptrace_traceme(struct task_struct
*parent
);
60 extern int cap_capget(struct task_struct
*target
, kernel_cap_t
*effective
, kernel_cap_t
*inheritable
, kernel_cap_t
*permitted
);
61 extern int cap_capset(struct cred
*new, const struct cred
*old
,
62 const kernel_cap_t
*effective
,
63 const kernel_cap_t
*inheritable
,
64 const kernel_cap_t
*permitted
);
65 extern int cap_bprm_set_creds(struct linux_binprm
*bprm
);
66 extern int cap_bprm_secureexec(struct linux_binprm
*bprm
);
67 extern int cap_inode_setxattr(struct dentry
*dentry
, const char *name
,
68 const void *value
, size_t size
, int flags
);
69 extern int cap_inode_removexattr(struct dentry
*dentry
, const char *name
);
70 extern int cap_inode_need_killpriv(struct dentry
*dentry
);
71 extern int cap_inode_killpriv(struct dentry
*dentry
);
72 extern int cap_file_mmap(struct file
*file
, unsigned long reqprot
,
73 unsigned long prot
, unsigned long flags
,
74 unsigned long addr
, unsigned long addr_only
);
75 extern int cap_task_fix_setuid(struct cred
*new, const struct cred
*old
, int flags
);
76 extern int cap_task_prctl(int option
, unsigned long arg2
, unsigned long arg3
,
77 unsigned long arg4
, unsigned long arg5
);
78 extern int cap_task_setscheduler(struct task_struct
*p
);
79 extern int cap_task_setioprio(struct task_struct
*p
, int ioprio
);
80 extern int cap_task_setnice(struct task_struct
*p
, int nice
);
81 extern int cap_vm_enough_memory(struct mm_struct
*mm
, long pages
);
93 struct xfrm_user_sec_ctx
;
96 extern int cap_netlink_send(struct sock
*sk
, struct sk_buff
*skb
);
97 extern int cap_netlink_recv(struct sk_buff
*skb
, int cap
);
99 void reset_security_ops(void);
102 extern unsigned long mmap_min_addr
;
103 extern unsigned long dac_mmap_min_addr
;
105 #define dac_mmap_min_addr 0UL
109 * Values used in the task_security_ops calls
111 /* setuid or setgid, id0 == uid or gid */
112 #define LSM_SETID_ID 1
114 /* setreuid or setregid, id0 == real, id1 == eff */
115 #define LSM_SETID_RE 2
117 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
118 #define LSM_SETID_RES 4
120 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
121 #define LSM_SETID_FS 8
123 /* forward declares to avoid warnings */
127 /* bprm->unsafe reasons */
128 #define LSM_UNSAFE_SHARE 1
129 #define LSM_UNSAFE_PTRACE 2
130 #define LSM_UNSAFE_PTRACE_CAP 4
134 * If a hint addr is less than mmap_min_addr change hint to be as
135 * low as possible but still greater than mmap_min_addr
137 static inline unsigned long round_hint_to_min(unsigned long hint
)
140 if (((void *)hint
!= NULL
) &&
141 (hint
< mmap_min_addr
))
142 return PAGE_ALIGN(mmap_min_addr
);
145 extern int mmap_min_addr_handler(struct ctl_table
*table
, int write
,
146 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
);
149 #ifdef CONFIG_SECURITY
151 struct security_mnt_opts
{
157 static inline void security_init_mnt_opts(struct security_mnt_opts
*opts
)
159 opts
->mnt_opts
= NULL
;
160 opts
->mnt_opts_flags
= NULL
;
161 opts
->num_mnt_opts
= 0;
164 static inline void security_free_mnt_opts(struct security_mnt_opts
*opts
)
168 for (i
= 0; i
< opts
->num_mnt_opts
; i
++)
169 kfree(opts
->mnt_opts
[i
]);
170 kfree(opts
->mnt_opts
);
171 opts
->mnt_opts
= NULL
;
172 kfree(opts
->mnt_opts_flags
);
173 opts
->mnt_opts_flags
= NULL
;
174 opts
->num_mnt_opts
= 0;
178 * struct security_operations - main security structure
180 * Security module identifier.
183 * A string that acts as a unique identifeir for the LSM with max number
184 * of characters = SECURITY_NAME_MAX.
186 * Security hooks for program execution operations.
189 * Save security information in the bprm->security field, typically based
190 * on information about the bprm->file, for later use by the apply_creds
191 * hook. This hook may also optionally check permissions (e.g. for
192 * transitions between security domains).
193 * This hook may be called multiple times during a single execve, e.g. for
194 * interpreters. The hook can tell whether it has already been called by
195 * checking to see if @bprm->security is non-NULL. If so, then the hook
196 * may decide either to retain the security information saved earlier or
198 * @bprm contains the linux_binprm structure.
199 * Return 0 if the hook is successful and permission is granted.
200 * @bprm_check_security:
201 * This hook mediates the point when a search for a binary handler will
202 * begin. It allows a check the @bprm->security value which is set in the
203 * preceding set_creds call. The primary difference from set_creds is
204 * that the argv list and envp list are reliably available in @bprm. This
205 * hook may be called multiple times during a single execve; and in each
206 * pass set_creds is called first.
207 * @bprm contains the linux_binprm structure.
208 * Return 0 if the hook is successful and permission is granted.
209 * @bprm_committing_creds:
210 * Prepare to install the new security attributes of a process being
211 * transformed by an execve operation, based on the old credentials
212 * pointed to by @current->cred and the information set in @bprm->cred by
213 * the bprm_set_creds hook. @bprm points to the linux_binprm structure.
214 * This hook is a good place to perform state changes on the process such
215 * as closing open file descriptors to which access will no longer be
216 * granted when the attributes are changed. This is called immediately
217 * before commit_creds().
218 * @bprm_committed_creds:
219 * Tidy up after the installation of the new security attributes of a
220 * process being transformed by an execve operation. The new credentials
221 * have, by this point, been set to @current->cred. @bprm points to the
222 * linux_binprm structure. This hook is a good place to perform state
223 * changes on the process such as clearing out non-inheritable signal
224 * state. This is called immediately after commit_creds().
226 * Return a boolean value (0 or 1) indicating whether a "secure exec"
227 * is required. The flag is passed in the auxiliary table
228 * on the initial stack to the ELF interpreter to indicate whether libc
229 * should enable secure mode.
230 * @bprm contains the linux_binprm structure.
232 * Security hooks for filesystem operations.
234 * @sb_alloc_security:
235 * Allocate and attach a security structure to the sb->s_security field.
236 * The s_security field is initialized to NULL when the structure is
238 * @sb contains the super_block structure to be modified.
239 * Return 0 if operation was successful.
241 * Deallocate and clear the sb->s_security field.
242 * @sb contains the super_block structure to be modified.
244 * Check permission before obtaining filesystem statistics for the @mnt
246 * @dentry is a handle on the superblock for the filesystem.
247 * Return 0 if permission is granted.
249 * Check permission before an object specified by @dev_name is mounted on
250 * the mount point named by @nd. For an ordinary mount, @dev_name
251 * identifies a device if the file system type requires a device. For a
252 * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a
253 * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
254 * pathname of the object being mounted.
255 * @dev_name contains the name for object being mounted.
256 * @path contains the path for mount point object.
257 * @type contains the filesystem type.
258 * @flags contains the mount flags.
259 * @data contains the filesystem-specific data.
260 * Return 0 if permission is granted.
262 * Allow mount option data to be copied prior to parsing by the filesystem,
263 * so that the security module can extract security-specific mount
264 * options cleanly (a filesystem may modify the data e.g. with strsep()).
265 * This also allows the original mount data to be stripped of security-
266 * specific options to avoid having to make filesystems aware of them.
267 * @type the type of filesystem being mounted.
268 * @orig the original mount data copied from userspace.
269 * @copy copied data which will be passed to the security module.
270 * Returns 0 if the copy was successful.
272 * Extracts security system specifc mount options and verifys no changes
273 * are being made to those options.
274 * @sb superblock being remounted
275 * @data contains the filesystem-specific data.
276 * Return 0 if permission is granted.
278 * Check permission before the @mnt file system is unmounted.
279 * @mnt contains the mounted file system.
280 * @flags contains the unmount flags, e.g. MNT_FORCE.
281 * Return 0 if permission is granted.
283 * Check permission before pivoting the root filesystem.
284 * @old_path contains the path for the new location of the current root (put_old).
285 * @new_path contains the path for the new root (new_root).
286 * Return 0 if permission is granted.
288 * Set the security relevant mount options used for a superblock
289 * @sb the superblock to set security mount options for
290 * @opts binary data structure containing all lsm mount data
291 * @sb_clone_mnt_opts:
292 * Copy all security options from a given superblock to another
293 * @oldsb old superblock which contain information to clone
294 * @newsb new superblock which needs filled in
295 * @sb_parse_opts_str:
296 * Parse a string of security data filling in the opts structure
297 * @options string containing all mount options known by the LSM
298 * @opts binary data structure usable by the LSM
300 * Security hooks for inode operations.
302 * @inode_alloc_security:
303 * Allocate and attach a security structure to @inode->i_security. The
304 * i_security field is initialized to NULL when the inode structure is
306 * @inode contains the inode structure.
307 * Return 0 if operation was successful.
308 * @inode_free_security:
309 * @inode contains the inode structure.
310 * Deallocate the inode security structure and set @inode->i_security to
312 * @inode_init_security:
313 * Obtain the security attribute name suffix and value to set on a newly
314 * created inode and set up the incore security field for the new inode.
315 * This hook is called by the fs code as part of the inode creation
316 * transaction and provides for atomic labeling of the inode, unlike
317 * the post_create/mkdir/... hooks called by the VFS. The hook function
318 * is expected to allocate the name and value via kmalloc, with the caller
319 * being responsible for calling kfree after using them.
320 * If the security module does not use security attributes or does
321 * not wish to put a security attribute on this particular inode,
322 * then it should return -EOPNOTSUPP to skip this processing.
323 * @inode contains the inode structure of the newly created inode.
324 * @dir contains the inode structure of the parent directory.
325 * @qstr contains the last path component of the new object
326 * @name will be set to the allocated name suffix (e.g. selinux).
327 * @value will be set to the allocated attribute value.
328 * @len will be set to the length of the value.
329 * Returns 0 if @name and @value have been successfully set,
330 * -EOPNOTSUPP if no security attribute is needed, or
331 * -ENOMEM on memory allocation failure.
333 * Check permission to create a regular file.
334 * @dir contains inode structure of the parent of the new file.
335 * @dentry contains the dentry structure for the file to be created.
336 * @mode contains the file mode of the file to be created.
337 * Return 0 if permission is granted.
339 * Check permission before creating a new hard link to a file.
340 * @old_dentry contains the dentry structure for an existing link to the file.
341 * @dir contains the inode structure of the parent directory of the new link.
342 * @new_dentry contains the dentry structure for the new link.
343 * Return 0 if permission is granted.
345 * Check permission before creating a new hard link to a file.
346 * @old_dentry contains the dentry structure for an existing link
348 * @new_dir contains the path structure of the parent directory of
350 * @new_dentry contains the dentry structure for the new link.
351 * Return 0 if permission is granted.
353 * Check the permission to remove a hard link to a file.
354 * @dir contains the inode structure of parent directory of the file.
355 * @dentry contains the dentry structure for file to be unlinked.
356 * Return 0 if permission is granted.
358 * Check the permission to remove a hard link to a file.
359 * @dir contains the path structure of parent directory of the file.
360 * @dentry contains the dentry structure for file to be unlinked.
361 * Return 0 if permission is granted.
363 * Check the permission to create a symbolic link to a file.
364 * @dir contains the inode structure of parent directory of the symbolic link.
365 * @dentry contains the dentry structure of the symbolic link.
366 * @old_name contains the pathname of file.
367 * Return 0 if permission is granted.
369 * Check the permission to create a symbolic link to a file.
370 * @dir contains the path structure of parent directory of
372 * @dentry contains the dentry structure of the symbolic link.
373 * @old_name contains the pathname of file.
374 * Return 0 if permission is granted.
376 * Check permissions to create a new directory in the existing directory
377 * associated with inode strcture @dir.
378 * @dir containst the inode structure of parent of the directory to be created.
379 * @dentry contains the dentry structure of new directory.
380 * @mode contains the mode of new directory.
381 * Return 0 if permission is granted.
383 * Check permissions to create a new directory in the existing directory
384 * associated with path strcture @path.
385 * @dir containst the path structure of parent of the directory
387 * @dentry contains the dentry structure of new directory.
388 * @mode contains the mode of new directory.
389 * Return 0 if permission is granted.
391 * Check the permission to remove a directory.
392 * @dir contains the inode structure of parent of the directory to be removed.
393 * @dentry contains the dentry structure of directory to be removed.
394 * Return 0 if permission is granted.
396 * Check the permission to remove a directory.
397 * @dir contains the path structure of parent of the directory to be
399 * @dentry contains the dentry structure of directory to be removed.
400 * Return 0 if permission is granted.
402 * Check permissions when creating a special file (or a socket or a fifo
403 * file created via the mknod system call). Note that if mknod operation
404 * is being done for a regular file, then the create hook will be called
406 * @dir contains the inode structure of parent of the new file.
407 * @dentry contains the dentry structure of the new file.
408 * @mode contains the mode of the new file.
409 * @dev contains the device number.
410 * Return 0 if permission is granted.
412 * Check permissions when creating a file. Note that this hook is called
413 * even if mknod operation is being done for a regular file.
414 * @dir contains the path structure of parent of the new file.
415 * @dentry contains the dentry structure of the new file.
416 * @mode contains the mode of the new file.
417 * @dev contains the undecoded device number. Use new_decode_dev() to get
418 * the decoded device number.
419 * Return 0 if permission is granted.
421 * Check for permission to rename a file or directory.
422 * @old_dir contains the inode structure for parent of the old link.
423 * @old_dentry contains the dentry structure of the old link.
424 * @new_dir contains the inode structure for parent of the new link.
425 * @new_dentry contains the dentry structure of the new link.
426 * Return 0 if permission is granted.
428 * Check for permission to rename a file or directory.
429 * @old_dir contains the path structure for parent of the old link.
430 * @old_dentry contains the dentry structure of the old link.
431 * @new_dir contains the path structure for parent of the new link.
432 * @new_dentry contains the dentry structure of the new link.
433 * Return 0 if permission is granted.
435 * Check for permission to change DAC's permission of a file or directory.
436 * @dentry contains the dentry structure.
437 * @mnt contains the vfsmnt structure.
438 * @mode contains DAC's mode.
439 * Return 0 if permission is granted.
441 * Check for permission to change owner/group of a file or directory.
442 * @path contains the path structure.
443 * @uid contains new owner's ID.
444 * @gid contains new group's ID.
445 * Return 0 if permission is granted.
447 * Check for permission to change root directory.
448 * @path contains the path structure.
449 * Return 0 if permission is granted.
451 * Check the permission to read the symbolic link.
452 * @dentry contains the dentry structure for the file link.
453 * Return 0 if permission is granted.
454 * @inode_follow_link:
455 * Check permission to follow a symbolic link when looking up a pathname.
456 * @dentry contains the dentry structure for the link.
457 * @nd contains the nameidata structure for the parent directory.
458 * Return 0 if permission is granted.
460 * Check permission before accessing an inode. This hook is called by the
461 * existing Linux permission function, so a security module can use it to
462 * provide additional checking for existing Linux permission checks.
463 * Notice that this hook is called when a file is opened (as well as many
464 * other operations), whereas the file_security_ops permission hook is
465 * called when the actual read/write operations are performed.
466 * @inode contains the inode structure to check.
467 * @mask contains the permission mask.
468 * Return 0 if permission is granted.
470 * Check permission before setting file attributes. Note that the kernel
471 * call to notify_change is performed from several locations, whenever
472 * file attributes change (such as when a file is truncated, chown/chmod
473 * operations, transferring disk quotas, etc).
474 * @dentry contains the dentry structure for the file.
475 * @attr is the iattr structure containing the new file attributes.
476 * Return 0 if permission is granted.
478 * Check permission before truncating a file.
479 * @path contains the path structure for the file.
480 * Return 0 if permission is granted.
482 * Check permission before obtaining file attributes.
483 * @mnt is the vfsmount where the dentry was looked up
484 * @dentry contains the dentry structure for the file.
485 * Return 0 if permission is granted.
487 * Check permission before setting the extended attributes
488 * @value identified by @name for @dentry.
489 * Return 0 if permission is granted.
490 * @inode_post_setxattr:
491 * Update inode security field after successful setxattr operation.
492 * @value identified by @name for @dentry.
494 * Check permission before obtaining the extended attributes
495 * identified by @name for @dentry.
496 * Return 0 if permission is granted.
498 * Check permission before obtaining the list of extended attribute
500 * Return 0 if permission is granted.
501 * @inode_removexattr:
502 * Check permission before removing the extended attribute
503 * identified by @name for @dentry.
504 * Return 0 if permission is granted.
505 * @inode_getsecurity:
506 * Retrieve a copy of the extended attribute representation of the
507 * security label associated with @name for @inode via @buffer. Note that
508 * @name is the remainder of the attribute name after the security prefix
509 * has been removed. @alloc is used to specify of the call should return a
510 * value via the buffer or just the value length Return size of buffer on
512 * @inode_setsecurity:
513 * Set the security label associated with @name for @inode from the
514 * extended attribute value @value. @size indicates the size of the
515 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
516 * Note that @name is the remainder of the attribute name after the
517 * security. prefix has been removed.
518 * Return 0 on success.
519 * @inode_listsecurity:
520 * Copy the extended attribute names for the security labels
521 * associated with @inode into @buffer. The maximum size of @buffer
522 * is specified by @buffer_size. @buffer may be NULL to request
523 * the size of the buffer required.
524 * Returns number of bytes used/required on success.
525 * @inode_need_killpriv:
526 * Called when an inode has been changed.
527 * @dentry is the dentry being changed.
528 * Return <0 on error to abort the inode change operation.
529 * Return 0 if inode_killpriv does not need to be called.
530 * Return >0 if inode_killpriv does need to be called.
532 * The setuid bit is being removed. Remove similar security labels.
533 * Called with the dentry->d_inode->i_mutex held.
534 * @dentry is the dentry being changed.
535 * Return 0 on success. If error is returned, then the operation
536 * causing setuid bit removal is failed.
538 * Get the secid associated with the node.
539 * @inode contains a pointer to the inode.
540 * @secid contains a pointer to the location where result will be saved.
541 * In case of failure, @secid will be set to zero.
543 * Security hooks for file operations
546 * Check file permissions before accessing an open file. This hook is
547 * called by various operations that read or write files. A security
548 * module can use this hook to perform additional checking on these
549 * operations, e.g. to revalidate permissions on use to support privilege
550 * bracketing or policy changes. Notice that this hook is used when the
551 * actual read/write operations are performed, whereas the
552 * inode_security_ops hook is called when a file is opened (as well as
553 * many other operations).
554 * Caveat: Although this hook can be used to revalidate permissions for
555 * various system call operations that read or write files, it does not
556 * address the revalidation of permissions for memory-mapped files.
557 * Security modules must handle this separately if they need such
559 * @file contains the file structure being accessed.
560 * @mask contains the requested permissions.
561 * Return 0 if permission is granted.
562 * @file_alloc_security:
563 * Allocate and attach a security structure to the file->f_security field.
564 * The security field is initialized to NULL when the structure is first
566 * @file contains the file structure to secure.
567 * Return 0 if the hook is successful and permission is granted.
568 * @file_free_security:
569 * Deallocate and free any security structures stored in file->f_security.
570 * @file contains the file structure being modified.
572 * @file contains the file structure.
573 * @cmd contains the operation to perform.
574 * @arg contains the operational arguments.
575 * Check permission for an ioctl operation on @file. Note that @arg can
576 * sometimes represents a user space pointer; in other cases, it may be a
577 * simple integer value. When @arg represents a user space pointer, it
578 * should never be used by the security module.
579 * Return 0 if permission is granted.
581 * Check permissions for a mmap operation. The @file may be NULL, e.g.
582 * if mapping anonymous memory.
583 * @file contains the file structure for file to map (may be NULL).
584 * @reqprot contains the protection requested by the application.
585 * @prot contains the protection that will be applied by the kernel.
586 * @flags contains the operational flags.
587 * Return 0 if permission is granted.
589 * Check permissions before changing memory access permissions.
590 * @vma contains the memory region to modify.
591 * @reqprot contains the protection requested by the application.
592 * @prot contains the protection that will be applied by the kernel.
593 * Return 0 if permission is granted.
595 * Check permission before performing file locking operations.
596 * Note: this hook mediates both flock and fcntl style locks.
597 * @file contains the file structure.
598 * @cmd contains the posix-translated lock operation to perform
599 * (e.g. F_RDLCK, F_WRLCK).
600 * Return 0 if permission is granted.
602 * Check permission before allowing the file operation specified by @cmd
603 * from being performed on the file @file. Note that @arg can sometimes
604 * represents a user space pointer; in other cases, it may be a simple
605 * integer value. When @arg represents a user space pointer, it should
606 * never be used by the security module.
607 * @file contains the file structure.
608 * @cmd contains the operation to be performed.
609 * @arg contains the operational arguments.
610 * Return 0 if permission is granted.
612 * Save owner security information (typically from current->security) in
613 * file->f_security for later use by the send_sigiotask hook.
614 * @file contains the file structure to update.
615 * Return 0 on success.
616 * @file_send_sigiotask:
617 * Check permission for the file owner @fown to send SIGIO or SIGURG to the
618 * process @tsk. Note that this hook is sometimes called from interrupt.
619 * Note that the fown_struct, @fown, is never outside the context of a
620 * struct file, so the file structure (and associated security information)
621 * can always be obtained:
622 * container_of(fown, struct file, f_owner)
623 * @tsk contains the structure of task receiving signal.
624 * @fown contains the file owner information.
625 * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
626 * Return 0 if permission is granted.
628 * This hook allows security modules to control the ability of a process
629 * to receive an open file descriptor via socket IPC.
630 * @file contains the file structure being received.
631 * Return 0 if permission is granted.
633 * Security hook for dentry
636 * Save open-time permission checking state for later use upon
637 * file_permission, and recheck access if anything has changed
638 * since inode_permission.
640 * Security hooks for task operations.
643 * Check permission before creating a child process. See the clone(2)
644 * manual page for definitions of the @clone_flags.
645 * @clone_flags contains the flags indicating what should be shared.
646 * Return 0 if permission is granted.
648 * @cred points to the credentials.
649 * @gfp indicates the atomicity of any memory allocations.
650 * Only allocate sufficient memory and attach to @cred such that
651 * cred_transfer() will not get ENOMEM.
653 * @cred points to the credentials.
654 * Deallocate and clear the cred->security field in a set of credentials.
656 * @new points to the new credentials.
657 * @old points to the original credentials.
658 * @gfp indicates the atomicity of any memory allocations.
659 * Prepare a new set of credentials by copying the data from the old set.
661 * @new points to the new credentials.
662 * @old points to the original credentials.
663 * Transfer data from original creds to new creds
665 * Set the credentials for a kernel service to act as (subjective context).
666 * @new points to the credentials to be modified.
667 * @secid specifies the security ID to be set
668 * The current task must be the one that nominated @secid.
669 * Return 0 if successful.
670 * @kernel_create_files_as:
671 * Set the file creation context in a set of credentials to be the same as
672 * the objective context of the specified inode.
673 * @new points to the credentials to be modified.
674 * @inode points to the inode to use as a reference.
675 * The current task must be the one that nominated @inode.
676 * Return 0 if successful.
677 * @kernel_module_request:
678 * Ability to trigger the kernel to automatically upcall to userspace for
679 * userspace to load a kernel module with the given name.
680 * @kmod_name name of the module requested by the kernel
681 * Return 0 if successful.
683 * Update the module's state after setting one or more of the user
684 * identity attributes of the current process. The @flags parameter
685 * indicates which of the set*uid system calls invoked this hook. If
686 * @new is the set of credentials that will be installed. Modifications
687 * should be made to this rather than to @current->cred.
688 * @old is the set of credentials that are being replaces
689 * @flags contains one of the LSM_SETID_* values.
690 * Return 0 on success.
692 * Check permission before setting the process group identifier of the
693 * process @p to @pgid.
694 * @p contains the task_struct for process being modified.
695 * @pgid contains the new pgid.
696 * Return 0 if permission is granted.
698 * Check permission before getting the process group identifier of the
700 * @p contains the task_struct for the process.
701 * Return 0 if permission is granted.
703 * Check permission before getting the session identifier of the process
705 * @p contains the task_struct for the process.
706 * Return 0 if permission is granted.
708 * Retrieve the security identifier of the process @p.
709 * @p contains the task_struct for the process and place is into @secid.
710 * In case of failure, @secid will be set to zero.
713 * Check permission before setting the nice value of @p to @nice.
714 * @p contains the task_struct of process.
715 * @nice contains the new nice value.
716 * Return 0 if permission is granted.
718 * Check permission before setting the ioprio value of @p to @ioprio.
719 * @p contains the task_struct of process.
720 * @ioprio contains the new ioprio value
721 * Return 0 if permission is granted.
723 * Check permission before getting the ioprio value of @p.
724 * @p contains the task_struct of process.
725 * Return 0 if permission is granted.
727 * Check permission before setting the resource limits of the current
728 * process for @resource to @new_rlim. The old resource limit values can
729 * be examined by dereferencing (current->signal->rlim + resource).
730 * @resource contains the resource whose limit is being set.
731 * @new_rlim contains the new limits for @resource.
732 * Return 0 if permission is granted.
733 * @task_setscheduler:
734 * Check permission before setting scheduling policy and/or parameters of
735 * process @p based on @policy and @lp.
736 * @p contains the task_struct for process.
737 * @policy contains the scheduling policy.
738 * @lp contains the scheduling parameters.
739 * Return 0 if permission is granted.
740 * @task_getscheduler:
741 * Check permission before obtaining scheduling information for process
743 * @p contains the task_struct for process.
744 * Return 0 if permission is granted.
746 * Check permission before moving memory owned by process @p.
747 * @p contains the task_struct for process.
748 * Return 0 if permission is granted.
750 * Check permission before sending signal @sig to @p. @info can be NULL,
751 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
752 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
753 * from the kernel and should typically be permitted.
754 * SIGIO signals are handled separately by the send_sigiotask hook in
756 * @p contains the task_struct for process.
757 * @info contains the signal information.
758 * @sig contains the signal value.
759 * @secid contains the sid of the process where the signal originated
760 * Return 0 if permission is granted.
762 * Check permission before allowing a process to reap a child process @p
763 * and collect its status information.
764 * @p contains the task_struct for process.
765 * Return 0 if permission is granted.
767 * Check permission before performing a process control operation on the
769 * @option contains the operation.
770 * @arg2 contains a argument.
771 * @arg3 contains a argument.
772 * @arg4 contains a argument.
773 * @arg5 contains a argument.
774 * Return -ENOSYS if no-one wanted to handle this op, any other value to
775 * cause prctl() to return immediately with that value.
777 * Set the security attributes for an inode based on an associated task's
778 * security attributes, e.g. for /proc/pid inodes.
779 * @p contains the task_struct for the task.
780 * @inode contains the inode structure for the inode.
782 * Security hooks for Netlink messaging.
785 * Save security information for a netlink message so that permission
786 * checking can be performed when the message is processed. The security
787 * information can be saved using the eff_cap field of the
788 * netlink_skb_parms structure. Also may be used to provide fine
789 * grained control over message transmission.
790 * @sk associated sock of task sending the message.,
791 * @skb contains the sk_buff structure for the netlink message.
792 * Return 0 if the information was successfully saved and message
793 * is allowed to be transmitted.
795 * Check permission before processing the received netlink message in
797 * @skb contains the sk_buff structure for the netlink message.
798 * @cap indicates the capability required
799 * Return 0 if permission is granted.
801 * Security hooks for Unix domain networking.
803 * @unix_stream_connect:
804 * Check permissions before establishing a Unix domain stream connection
805 * between @sock and @other.
806 * @sock contains the sock structure.
807 * @other contains the peer sock structure.
808 * @newsk contains the new sock structure.
809 * Return 0 if permission is granted.
811 * Check permissions before connecting or sending datagrams from @sock to
813 * @sock contains the socket structure.
814 * @sock contains the peer socket structure.
815 * Return 0 if permission is granted.
817 * The @unix_stream_connect and @unix_may_send hooks were necessary because
818 * Linux provides an alternative to the conventional file name space for Unix
819 * domain sockets. Whereas binding and connecting to sockets in the file name
820 * space is mediated by the typical file permissions (and caught by the mknod
821 * and permission hooks in inode_security_ops), binding and connecting to
822 * sockets in the abstract name space is completely unmediated. Sufficient
823 * control of Unix domain sockets in the abstract name space isn't possible
824 * using only the socket layer hooks, since we need to know the actual target
825 * socket, which is not looked up until we are inside the af_unix code.
827 * Security hooks for socket operations.
830 * Check permissions prior to creating a new socket.
831 * @family contains the requested protocol family.
832 * @type contains the requested communications type.
833 * @protocol contains the requested protocol.
834 * @kern set to 1 if a kernel socket.
835 * Return 0 if permission is granted.
836 * @socket_post_create:
837 * This hook allows a module to update or allocate a per-socket security
838 * structure. Note that the security field was not added directly to the
839 * socket structure, but rather, the socket security information is stored
840 * in the associated inode. Typically, the inode alloc_security hook will
841 * allocate and and attach security information to
842 * sock->inode->i_security. This hook may be used to update the
843 * sock->inode->i_security field with additional information that wasn't
844 * available when the inode was allocated.
845 * @sock contains the newly created socket structure.
846 * @family contains the requested protocol family.
847 * @type contains the requested communications type.
848 * @protocol contains the requested protocol.
849 * @kern set to 1 if a kernel socket.
851 * Check permission before socket protocol layer bind operation is
852 * performed and the socket @sock is bound to the address specified in the
853 * @address parameter.
854 * @sock contains the socket structure.
855 * @address contains the address to bind to.
856 * @addrlen contains the length of address.
857 * Return 0 if permission is granted.
859 * Check permission before socket protocol layer connect operation
860 * attempts to connect socket @sock to a remote address, @address.
861 * @sock contains the socket structure.
862 * @address contains the address of remote endpoint.
863 * @addrlen contains the length of address.
864 * Return 0 if permission is granted.
866 * Check permission before socket protocol layer listen operation.
867 * @sock contains the socket structure.
868 * @backlog contains the maximum length for the pending connection queue.
869 * Return 0 if permission is granted.
871 * Check permission before accepting a new connection. Note that the new
872 * socket, @newsock, has been created and some information copied to it,
873 * but the accept operation has not actually been performed.
874 * @sock contains the listening socket structure.
875 * @newsock contains the newly created server socket for connection.
876 * Return 0 if permission is granted.
878 * Check permission before transmitting a message to another socket.
879 * @sock contains the socket structure.
880 * @msg contains the message to be transmitted.
881 * @size contains the size of message.
882 * Return 0 if permission is granted.
884 * Check permission before receiving a message from a socket.
885 * @sock contains the socket structure.
886 * @msg contains the message structure.
887 * @size contains the size of message structure.
888 * @flags contains the operational flags.
889 * Return 0 if permission is granted.
890 * @socket_getsockname:
891 * Check permission before the local address (name) of the socket object
892 * @sock is retrieved.
893 * @sock contains the socket structure.
894 * Return 0 if permission is granted.
895 * @socket_getpeername:
896 * Check permission before the remote address (name) of a socket object
897 * @sock is retrieved.
898 * @sock contains the socket structure.
899 * Return 0 if permission is granted.
900 * @socket_getsockopt:
901 * Check permissions before retrieving the options associated with socket
903 * @sock contains the socket structure.
904 * @level contains the protocol level to retrieve option from.
905 * @optname contains the name of option to retrieve.
906 * Return 0 if permission is granted.
907 * @socket_setsockopt:
908 * Check permissions before setting the options associated with socket
910 * @sock contains the socket structure.
911 * @level contains the protocol level to set options for.
912 * @optname contains the name of the option to set.
913 * Return 0 if permission is granted.
915 * Checks permission before all or part of a connection on the socket
916 * @sock is shut down.
917 * @sock contains the socket structure.
918 * @how contains the flag indicating how future sends and receives are handled.
919 * Return 0 if permission is granted.
920 * @socket_sock_rcv_skb:
921 * Check permissions on incoming network packets. This hook is distinct
922 * from Netfilter's IP input hooks since it is the first time that the
923 * incoming sk_buff @skb has been associated with a particular socket, @sk.
924 * Must not sleep inside this hook because some callers hold spinlocks.
925 * @sk contains the sock (not socket) associated with the incoming sk_buff.
926 * @skb contains the incoming network data.
927 * @socket_getpeersec_stream:
928 * This hook allows the security module to provide peer socket security
929 * state for unix or connected tcp sockets to userspace via getsockopt
930 * SO_GETPEERSEC. For tcp sockets this can be meaningful if the
931 * socket is associated with an ipsec SA.
932 * @sock is the local socket.
933 * @optval userspace memory where the security state is to be copied.
934 * @optlen userspace int where the module should copy the actual length
935 * of the security state.
936 * @len as input is the maximum length to copy to userspace provided
938 * Return 0 if all is well, otherwise, typical getsockopt return
940 * @socket_getpeersec_dgram:
941 * This hook allows the security module to provide peer socket security
942 * state for udp sockets on a per-packet basis to userspace via
943 * getsockopt SO_GETPEERSEC. The application must first have indicated
944 * the IP_PASSSEC option via getsockopt. It can then retrieve the
945 * security state returned by this hook for a packet via the SCM_SECURITY
946 * ancillary message type.
947 * @skb is the skbuff for the packet being queried
948 * @secdata is a pointer to a buffer in which to copy the security data
949 * @seclen is the maximum length for @secdata
950 * Return 0 on success, error on failure.
951 * @sk_alloc_security:
952 * Allocate and attach a security structure to the sk->sk_security field,
953 * which is used to copy security attributes between local stream sockets.
955 * Deallocate security structure.
956 * @sk_clone_security:
957 * Clone/copy security structure.
959 * Retrieve the LSM-specific secid for the sock to enable caching of network
962 * Sets the socket's isec sid to the sock's sid.
963 * @inet_conn_request:
964 * Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
966 * Sets the new child socket's sid to the openreq sid.
967 * @inet_conn_established:
968 * Sets the connection's peersid to the secmark on skb.
969 * @secmark_relabel_packet:
970 * check if the process should be allowed to relabel packets to the given secid
971 * @security_secmark_refcount_inc
972 * tells the LSM to increment the number of secmark labeling rules loaded
973 * @security_secmark_refcount_dec
974 * tells the LSM to decrement the number of secmark labeling rules loaded
975 * @req_classify_flow:
976 * Sets the flow's sid to the openreq sid.
978 * Check permissions prior to creating a new TUN device.
979 * @tun_dev_post_create:
980 * This hook allows a module to update or allocate a per-socket security
982 * @sk contains the newly created sock structure.
984 * Check permissions prior to attaching to a persistent TUN device. This
985 * hook can also be used by the module to update any security state
986 * associated with the TUN device's sock structure.
987 * @sk contains the existing sock structure.
989 * Security hooks for XFRM operations.
991 * @xfrm_policy_alloc_security:
992 * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
993 * Database used by the XFRM system.
994 * @sec_ctx contains the security context information being provided by
995 * the user-level policy update program (e.g., setkey).
996 * Allocate a security structure to the xp->security field; the security
997 * field is initialized to NULL when the xfrm_policy is allocated.
998 * Return 0 if operation was successful (memory to allocate, legal context)
999 * @xfrm_policy_clone_security:
1000 * @old_ctx contains an existing xfrm_sec_ctx.
1001 * @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
1002 * Allocate a security structure in new_ctxp that contains the
1003 * information from the old_ctx structure.
1004 * Return 0 if operation was successful (memory to allocate).
1005 * @xfrm_policy_free_security:
1006 * @ctx contains the xfrm_sec_ctx
1007 * Deallocate xp->security.
1008 * @xfrm_policy_delete_security:
1009 * @ctx contains the xfrm_sec_ctx.
1010 * Authorize deletion of xp->security.
1011 * @xfrm_state_alloc_security:
1012 * @x contains the xfrm_state being added to the Security Association
1013 * Database by the XFRM system.
1014 * @sec_ctx contains the security context information being provided by
1015 * the user-level SA generation program (e.g., setkey or racoon).
1016 * @secid contains the secid from which to take the mls portion of the context.
1017 * Allocate a security structure to the x->security field; the security
1018 * field is initialized to NULL when the xfrm_state is allocated. Set the
1019 * context to correspond to either sec_ctx or polsec, with the mls portion
1020 * taken from secid in the latter case.
1021 * Return 0 if operation was successful (memory to allocate, legal context).
1022 * @xfrm_state_free_security:
1023 * @x contains the xfrm_state.
1024 * Deallocate x->security.
1025 * @xfrm_state_delete_security:
1026 * @x contains the xfrm_state.
1027 * Authorize deletion of x->security.
1028 * @xfrm_policy_lookup:
1029 * @ctx contains the xfrm_sec_ctx for which the access control is being
1031 * @fl_secid contains the flow security label that is used to authorize
1032 * access to the policy xp.
1033 * @dir contains the direction of the flow (input or output).
1034 * Check permission when a flow selects a xfrm_policy for processing
1035 * XFRMs on a packet. The hook is called when selecting either a
1036 * per-socket policy or a generic xfrm policy.
1037 * Return 0 if permission is granted, -ESRCH otherwise, or -errno
1039 * @xfrm_state_pol_flow_match:
1040 * @x contains the state to match.
1041 * @xp contains the policy to check for a match.
1042 * @fl contains the flow to check for a match.
1043 * Return 1 if there is a match.
1044 * @xfrm_decode_session:
1045 * @skb points to skb to decode.
1046 * @secid points to the flow key secid to set.
1047 * @ckall says if all xfrms used should be checked for same secid.
1048 * Return 0 if ckall is zero or all xfrms used have the same secid.
1050 * Security hooks affecting all Key Management operations
1053 * Permit allocation of a key and assign security data. Note that key does
1054 * not have a serial number assigned at this point.
1055 * @key points to the key.
1056 * @flags is the allocation flags
1057 * Return 0 if permission is granted, -ve error otherwise.
1059 * Notification of destruction; free security data.
1060 * @key points to the key.
1063 * See whether a specific operational right is granted to a process on a
1065 * @key_ref refers to the key (key pointer + possession attribute bit).
1066 * @cred points to the credentials to provide the context against which to
1067 * evaluate the security data on the key.
1068 * @perm describes the combination of permissions required of this key.
1069 * Return 0 if permission is granted, -ve error otherwise.
1071 * Get a textual representation of the security context attached to a key
1072 * for the purposes of honouring KEYCTL_GETSECURITY. This function
1073 * allocates the storage for the NUL-terminated string and the caller
1075 * @key points to the key to be queried.
1076 * @_buffer points to a pointer that should be set to point to the
1077 * resulting string (if no label or an error occurs).
1078 * Return the length of the string (including terminating NUL) or -ve if
1080 * May also return 0 (and a NULL buffer pointer) if there is no label.
1082 * Security hooks affecting all System V IPC operations.
1085 * Check permissions for access to IPC
1086 * @ipcp contains the kernel IPC permission structure
1087 * @flag contains the desired (requested) permission set
1088 * Return 0 if permission is granted.
1090 * Get the secid associated with the ipc object.
1091 * @ipcp contains the kernel IPC permission structure.
1092 * @secid contains a pointer to the location where result will be saved.
1093 * In case of failure, @secid will be set to zero.
1095 * Security hooks for individual messages held in System V IPC message queues
1096 * @msg_msg_alloc_security:
1097 * Allocate and attach a security structure to the msg->security field.
1098 * The security field is initialized to NULL when the structure is first
1100 * @msg contains the message structure to be modified.
1101 * Return 0 if operation was successful and permission is granted.
1102 * @msg_msg_free_security:
1103 * Deallocate the security structure for this message.
1104 * @msg contains the message structure to be modified.
1106 * Security hooks for System V IPC Message Queues
1108 * @msg_queue_alloc_security:
1109 * Allocate and attach a security structure to the
1110 * msq->q_perm.security field. The security field is initialized to
1111 * NULL when the structure is first created.
1112 * @msq contains the message queue structure to be modified.
1113 * Return 0 if operation was successful and permission is granted.
1114 * @msg_queue_free_security:
1115 * Deallocate security structure for this message queue.
1116 * @msq contains the message queue structure to be modified.
1117 * @msg_queue_associate:
1118 * Check permission when a message queue is requested through the
1119 * msgget system call. This hook is only called when returning the
1120 * message queue identifier for an existing message queue, not when a
1121 * new message queue is created.
1122 * @msq contains the message queue to act upon.
1123 * @msqflg contains the operation control flags.
1124 * Return 0 if permission is granted.
1125 * @msg_queue_msgctl:
1126 * Check permission when a message control operation specified by @cmd
1127 * is to be performed on the message queue @msq.
1128 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
1129 * @msq contains the message queue to act upon. May be NULL.
1130 * @cmd contains the operation to be performed.
1131 * Return 0 if permission is granted.
1132 * @msg_queue_msgsnd:
1133 * Check permission before a message, @msg, is enqueued on the message
1135 * @msq contains the message queue to send message to.
1136 * @msg contains the message to be enqueued.
1137 * @msqflg contains operational flags.
1138 * Return 0 if permission is granted.
1139 * @msg_queue_msgrcv:
1140 * Check permission before a message, @msg, is removed from the message
1141 * queue, @msq. The @target task structure contains a pointer to the
1142 * process that will be receiving the message (not equal to the current
1143 * process when inline receives are being performed).
1144 * @msq contains the message queue to retrieve message from.
1145 * @msg contains the message destination.
1146 * @target contains the task structure for recipient process.
1147 * @type contains the type of message requested.
1148 * @mode contains the operational flags.
1149 * Return 0 if permission is granted.
1151 * Security hooks for System V Shared Memory Segments
1153 * @shm_alloc_security:
1154 * Allocate and attach a security structure to the shp->shm_perm.security
1155 * field. The security field is initialized to NULL when the structure is
1157 * @shp contains the shared memory structure to be modified.
1158 * Return 0 if operation was successful and permission is granted.
1159 * @shm_free_security:
1160 * Deallocate the security struct for this memory segment.
1161 * @shp contains the shared memory structure to be modified.
1163 * Check permission when a shared memory region is requested through the
1164 * shmget system call. This hook is only called when returning the shared
1165 * memory region identifier for an existing region, not when a new shared
1166 * memory region is created.
1167 * @shp contains the shared memory structure to be modified.
1168 * @shmflg contains the operation control flags.
1169 * Return 0 if permission is granted.
1171 * Check permission when a shared memory control operation specified by
1172 * @cmd is to be performed on the shared memory region @shp.
1173 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1174 * @shp contains shared memory structure to be modified.
1175 * @cmd contains the operation to be performed.
1176 * Return 0 if permission is granted.
1178 * Check permissions prior to allowing the shmat system call to attach the
1179 * shared memory segment @shp to the data segment of the calling process.
1180 * The attaching address is specified by @shmaddr.
1181 * @shp contains the shared memory structure to be modified.
1182 * @shmaddr contains the address to attach memory region to.
1183 * @shmflg contains the operational flags.
1184 * Return 0 if permission is granted.
1186 * Security hooks for System V Semaphores
1188 * @sem_alloc_security:
1189 * Allocate and attach a security structure to the sma->sem_perm.security
1190 * field. The security field is initialized to NULL when the structure is
1192 * @sma contains the semaphore structure
1193 * Return 0 if operation was successful and permission is granted.
1194 * @sem_free_security:
1195 * deallocate security struct for this semaphore
1196 * @sma contains the semaphore structure.
1198 * Check permission when a semaphore is requested through the semget
1199 * system call. This hook is only called when returning the semaphore
1200 * identifier for an existing semaphore, not when a new one must be
1202 * @sma contains the semaphore structure.
1203 * @semflg contains the operation control flags.
1204 * Return 0 if permission is granted.
1206 * Check permission when a semaphore operation specified by @cmd is to be
1207 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
1208 * IPC_INFO or SEM_INFO.
1209 * @sma contains the semaphore structure. May be NULL.
1210 * @cmd contains the operation to be performed.
1211 * Return 0 if permission is granted.
1213 * Check permissions before performing operations on members of the
1214 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1216 * @sma contains the semaphore structure.
1217 * @sops contains the operations to perform.
1218 * @nsops contains the number of operations to perform.
1219 * @alter contains the flag indicating whether changes are to be made.
1220 * Return 0 if permission is granted.
1222 * @ptrace_access_check:
1223 * Check permission before allowing the current process to trace the
1225 * Security modules may also want to perform a process tracing check
1226 * during an execve in the set_security or apply_creds hooks of
1227 * tracing check during an execve in the bprm_set_creds hook of
1228 * binprm_security_ops if the process is being traced and its security
1229 * attributes would be changed by the execve.
1230 * @child contains the task_struct structure for the target process.
1231 * @mode contains the PTRACE_MODE flags indicating the form of access.
1232 * Return 0 if permission is granted.
1234 * Check that the @parent process has sufficient permission to trace the
1235 * current process before allowing the current process to present itself
1236 * to the @parent process for tracing.
1237 * The parent process will still have to undergo the ptrace_access_check
1238 * checks before it is allowed to trace this one.
1239 * @parent contains the task_struct structure for debugger process.
1240 * Return 0 if permission is granted.
1242 * Get the @effective, @inheritable, and @permitted capability sets for
1243 * the @target process. The hook may also perform permission checking to
1244 * determine if the current process is allowed to see the capability sets
1245 * of the @target process.
1246 * @target contains the task_struct structure for target process.
1247 * @effective contains the effective capability set.
1248 * @inheritable contains the inheritable capability set.
1249 * @permitted contains the permitted capability set.
1250 * Return 0 if the capability sets were successfully obtained.
1252 * Set the @effective, @inheritable, and @permitted capability sets for
1253 * the current process.
1254 * @new contains the new credentials structure for target process.
1255 * @old contains the current credentials structure for target process.
1256 * @effective contains the effective capability set.
1257 * @inheritable contains the inheritable capability set.
1258 * @permitted contains the permitted capability set.
1259 * Return 0 and update @new if permission is granted.
1261 * Check whether the @tsk process has the @cap capability in the indicated
1263 * @tsk contains the task_struct for the process.
1264 * @cred contains the credentials to use.
1265 * @cap contains the capability <include/linux/capability.h>.
1266 * @audit: Whether to write an audit message or not
1267 * Return 0 if the capability is granted for @tsk.
1269 * Check permission before accessing the kernel message ring or changing
1270 * logging to the console.
1271 * See the syslog(2) manual page for an explanation of the @type values.
1272 * @type contains the type of action.
1273 * @from_file indicates the context of action (if it came from /proc).
1274 * Return 0 if permission is granted.
1276 * Check permission to change the system time.
1277 * struct timespec and timezone are defined in include/linux/time.h
1278 * @ts contains new time
1279 * @tz contains new timezone
1280 * Return 0 if permission is granted.
1281 * @vm_enough_memory:
1282 * Check permissions for allocating a new virtual mapping.
1283 * @mm contains the mm struct it is being added to.
1284 * @pages contains the number of pages.
1285 * Return 0 if permission is granted.
1288 * Convert secid to security context. If secdata is NULL the length of
1289 * the result will be returned in seclen, but no secdata will be returned.
1290 * This does mean that the length could change between calls to check the
1291 * length and the next call which actually allocates and returns the secdata.
1292 * @secid contains the security ID.
1293 * @secdata contains the pointer that stores the converted security context.
1294 * @seclen pointer which contains the length of the data
1296 * Convert security context to secid.
1297 * @secid contains the pointer to the generated security ID.
1298 * @secdata contains the security context.
1301 * Release the security context.
1302 * @secdata contains the security context.
1303 * @seclen contains the length of the security context.
1305 * Security hooks for Audit
1308 * Allocate and initialize an LSM audit rule structure.
1309 * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
1310 * @op contains the operator the rule uses.
1311 * @rulestr contains the context where the rule will be applied to.
1312 * @lsmrule contains a pointer to receive the result.
1313 * Return 0 if @lsmrule has been successfully set,
1314 * -EINVAL in case of an invalid rule.
1316 * @audit_rule_known:
1317 * Specifies whether given @rule contains any fields related to current LSM.
1318 * @rule contains the audit rule of interest.
1319 * Return 1 in case of relation found, 0 otherwise.
1321 * @audit_rule_match:
1322 * Determine if given @secid matches a rule previously approved
1323 * by @audit_rule_known.
1324 * @secid contains the security id in question.
1325 * @field contains the field which relates to current LSM.
1326 * @op contains the operator that will be used for matching.
1327 * @rule points to the audit rule that will be checked against.
1328 * @actx points to the audit context associated with the check.
1329 * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
1332 * Deallocate the LSM audit rule structure previously allocated by
1334 * @rule contains the allocated rule
1336 * @inode_notifysecctx:
1337 * Notify the security module of what the security context of an inode
1338 * should be. Initializes the incore security context managed by the
1339 * security module for this inode. Example usage: NFS client invokes
1340 * this hook to initialize the security context in its incore inode to the
1341 * value provided by the server for the file when the server returned the
1342 * file's attributes to the client.
1344 * Must be called with inode->i_mutex locked.
1346 * @inode we wish to set the security context of.
1347 * @ctx contains the string which we wish to set in the inode.
1348 * @ctxlen contains the length of @ctx.
1351 * Change the security context of an inode. Updates the
1352 * incore security context managed by the security module and invokes the
1353 * fs code as needed (via __vfs_setxattr_noperm) to update any backing
1354 * xattrs that represent the context. Example usage: NFS server invokes
1355 * this hook to change the security context in its incore inode and on the
1356 * backing filesystem to a value provided by the client on a SETATTR
1359 * Must be called with inode->i_mutex locked.
1361 * @dentry contains the inode we wish to set the security context of.
1362 * @ctx contains the string which we wish to set in the inode.
1363 * @ctxlen contains the length of @ctx.
1366 * Returns a string containing all relavent security context information
1368 * @inode we wish to set the security context of.
1369 * @ctx is a pointer in which to place the allocated security context.
1370 * @ctxlen points to the place to put the length of @ctx.
1371 * This is the main security structure.
1373 struct security_operations
{
1374 char name
[SECURITY_NAME_MAX
+ 1];
1376 int (*ptrace_access_check
) (struct task_struct
*child
, unsigned int mode
);
1377 int (*ptrace_traceme
) (struct task_struct
*parent
);
1378 int (*capget
) (struct task_struct
*target
,
1379 kernel_cap_t
*effective
,
1380 kernel_cap_t
*inheritable
, kernel_cap_t
*permitted
);
1381 int (*capset
) (struct cred
*new,
1382 const struct cred
*old
,
1383 const kernel_cap_t
*effective
,
1384 const kernel_cap_t
*inheritable
,
1385 const kernel_cap_t
*permitted
);
1386 int (*capable
) (struct task_struct
*tsk
, const struct cred
*cred
,
1387 int cap
, int audit
);
1388 int (*quotactl
) (int cmds
, int type
, int id
, struct super_block
*sb
);
1389 int (*quota_on
) (struct dentry
*dentry
);
1390 int (*syslog
) (int type
);
1391 int (*settime
) (const struct timespec
*ts
, const struct timezone
*tz
);
1392 int (*vm_enough_memory
) (struct mm_struct
*mm
, long pages
);
1394 int (*bprm_set_creds
) (struct linux_binprm
*bprm
);
1395 int (*bprm_check_security
) (struct linux_binprm
*bprm
);
1396 int (*bprm_secureexec
) (struct linux_binprm
*bprm
);
1397 void (*bprm_committing_creds
) (struct linux_binprm
*bprm
);
1398 void (*bprm_committed_creds
) (struct linux_binprm
*bprm
);
1400 int (*sb_alloc_security
) (struct super_block
*sb
);
1401 void (*sb_free_security
) (struct super_block
*sb
);
1402 int (*sb_copy_data
) (char *orig
, char *copy
);
1403 int (*sb_remount
) (struct super_block
*sb
, void *data
);
1404 int (*sb_kern_mount
) (struct super_block
*sb
, int flags
, void *data
);
1405 int (*sb_show_options
) (struct seq_file
*m
, struct super_block
*sb
);
1406 int (*sb_statfs
) (struct dentry
*dentry
);
1407 int (*sb_mount
) (char *dev_name
, struct path
*path
,
1408 char *type
, unsigned long flags
, void *data
);
1409 int (*sb_umount
) (struct vfsmount
*mnt
, int flags
);
1410 int (*sb_pivotroot
) (struct path
*old_path
,
1411 struct path
*new_path
);
1412 int (*sb_set_mnt_opts
) (struct super_block
*sb
,
1413 struct security_mnt_opts
*opts
);
1414 void (*sb_clone_mnt_opts
) (const struct super_block
*oldsb
,
1415 struct super_block
*newsb
);
1416 int (*sb_parse_opts_str
) (char *options
, struct security_mnt_opts
*opts
);
1418 #ifdef CONFIG_SECURITY_PATH
1419 int (*path_unlink
) (struct path
*dir
, struct dentry
*dentry
);
1420 int (*path_mkdir
) (struct path
*dir
, struct dentry
*dentry
, int mode
);
1421 int (*path_rmdir
) (struct path
*dir
, struct dentry
*dentry
);
1422 int (*path_mknod
) (struct path
*dir
, struct dentry
*dentry
, int mode
,
1424 int (*path_truncate
) (struct path
*path
);
1425 int (*path_symlink
) (struct path
*dir
, struct dentry
*dentry
,
1426 const char *old_name
);
1427 int (*path_link
) (struct dentry
*old_dentry
, struct path
*new_dir
,
1428 struct dentry
*new_dentry
);
1429 int (*path_rename
) (struct path
*old_dir
, struct dentry
*old_dentry
,
1430 struct path
*new_dir
, struct dentry
*new_dentry
);
1431 int (*path_chmod
) (struct dentry
*dentry
, struct vfsmount
*mnt
,
1433 int (*path_chown
) (struct path
*path
, uid_t uid
, gid_t gid
);
1434 int (*path_chroot
) (struct path
*path
);
1437 int (*inode_alloc_security
) (struct inode
*inode
);
1438 void (*inode_free_security
) (struct inode
*inode
);
1439 int (*inode_init_security
) (struct inode
*inode
, struct inode
*dir
,
1440 const struct qstr
*qstr
, char **name
,
1441 void **value
, size_t *len
);
1442 int (*inode_create
) (struct inode
*dir
,
1443 struct dentry
*dentry
, int mode
);
1444 int (*inode_link
) (struct dentry
*old_dentry
,
1445 struct inode
*dir
, struct dentry
*new_dentry
);
1446 int (*inode_unlink
) (struct inode
*dir
, struct dentry
*dentry
);
1447 int (*inode_symlink
) (struct inode
*dir
,
1448 struct dentry
*dentry
, const char *old_name
);
1449 int (*inode_mkdir
) (struct inode
*dir
, struct dentry
*dentry
, int mode
);
1450 int (*inode_rmdir
) (struct inode
*dir
, struct dentry
*dentry
);
1451 int (*inode_mknod
) (struct inode
*dir
, struct dentry
*dentry
,
1452 int mode
, dev_t dev
);
1453 int (*inode_rename
) (struct inode
*old_dir
, struct dentry
*old_dentry
,
1454 struct inode
*new_dir
, struct dentry
*new_dentry
);
1455 int (*inode_readlink
) (struct dentry
*dentry
);
1456 int (*inode_follow_link
) (struct dentry
*dentry
, struct nameidata
*nd
);
1457 int (*inode_permission
) (struct inode
*inode
, int mask
);
1458 int (*inode_setattr
) (struct dentry
*dentry
, struct iattr
*attr
);
1459 int (*inode_getattr
) (struct vfsmount
*mnt
, struct dentry
*dentry
);
1460 int (*inode_setxattr
) (struct dentry
*dentry
, const char *name
,
1461 const void *value
, size_t size
, int flags
);
1462 void (*inode_post_setxattr
) (struct dentry
*dentry
, const char *name
,
1463 const void *value
, size_t size
, int flags
);
1464 int (*inode_getxattr
) (struct dentry
*dentry
, const char *name
);
1465 int (*inode_listxattr
) (struct dentry
*dentry
);
1466 int (*inode_removexattr
) (struct dentry
*dentry
, const char *name
);
1467 int (*inode_need_killpriv
) (struct dentry
*dentry
);
1468 int (*inode_killpriv
) (struct dentry
*dentry
);
1469 int (*inode_getsecurity
) (const struct inode
*inode
, const char *name
, void **buffer
, bool alloc
);
1470 int (*inode_setsecurity
) (struct inode
*inode
, const char *name
, const void *value
, size_t size
, int flags
);
1471 int (*inode_listsecurity
) (struct inode
*inode
, char *buffer
, size_t buffer_size
);
1472 void (*inode_getsecid
) (const struct inode
*inode
, u32
*secid
);
1474 int (*file_permission
) (struct file
*file
, int mask
);
1475 int (*file_alloc_security
) (struct file
*file
);
1476 void (*file_free_security
) (struct file
*file
);
1477 int (*file_ioctl
) (struct file
*file
, unsigned int cmd
,
1479 int (*file_mmap
) (struct file
*file
,
1480 unsigned long reqprot
, unsigned long prot
,
1481 unsigned long flags
, unsigned long addr
,
1482 unsigned long addr_only
);
1483 int (*file_mprotect
) (struct vm_area_struct
*vma
,
1484 unsigned long reqprot
,
1485 unsigned long prot
);
1486 int (*file_lock
) (struct file
*file
, unsigned int cmd
);
1487 int (*file_fcntl
) (struct file
*file
, unsigned int cmd
,
1489 int (*file_set_fowner
) (struct file
*file
);
1490 int (*file_send_sigiotask
) (struct task_struct
*tsk
,
1491 struct fown_struct
*fown
, int sig
);
1492 int (*file_receive
) (struct file
*file
);
1493 int (*dentry_open
) (struct file
*file
, const struct cred
*cred
);
1495 int (*task_create
) (unsigned long clone_flags
);
1496 int (*cred_alloc_blank
) (struct cred
*cred
, gfp_t gfp
);
1497 void (*cred_free
) (struct cred
*cred
);
1498 int (*cred_prepare
)(struct cred
*new, const struct cred
*old
,
1500 void (*cred_transfer
)(struct cred
*new, const struct cred
*old
);
1501 int (*kernel_act_as
)(struct cred
*new, u32 secid
);
1502 int (*kernel_create_files_as
)(struct cred
*new, struct inode
*inode
);
1503 int (*kernel_module_request
)(char *kmod_name
);
1504 int (*task_fix_setuid
) (struct cred
*new, const struct cred
*old
,
1506 int (*task_setpgid
) (struct task_struct
*p
, pid_t pgid
);
1507 int (*task_getpgid
) (struct task_struct
*p
);
1508 int (*task_getsid
) (struct task_struct
*p
);
1509 void (*task_getsecid
) (struct task_struct
*p
, u32
*secid
);
1510 int (*task_setnice
) (struct task_struct
*p
, int nice
);
1511 int (*task_setioprio
) (struct task_struct
*p
, int ioprio
);
1512 int (*task_getioprio
) (struct task_struct
*p
);
1513 int (*task_setrlimit
) (struct task_struct
*p
, unsigned int resource
,
1514 struct rlimit
*new_rlim
);
1515 int (*task_setscheduler
) (struct task_struct
*p
);
1516 int (*task_getscheduler
) (struct task_struct
*p
);
1517 int (*task_movememory
) (struct task_struct
*p
);
1518 int (*task_kill
) (struct task_struct
*p
,
1519 struct siginfo
*info
, int sig
, u32 secid
);
1520 int (*task_wait
) (struct task_struct
*p
);
1521 int (*task_prctl
) (int option
, unsigned long arg2
,
1522 unsigned long arg3
, unsigned long arg4
,
1523 unsigned long arg5
);
1524 void (*task_to_inode
) (struct task_struct
*p
, struct inode
*inode
);
1526 int (*ipc_permission
) (struct kern_ipc_perm
*ipcp
, short flag
);
1527 void (*ipc_getsecid
) (struct kern_ipc_perm
*ipcp
, u32
*secid
);
1529 int (*msg_msg_alloc_security
) (struct msg_msg
*msg
);
1530 void (*msg_msg_free_security
) (struct msg_msg
*msg
);
1532 int (*msg_queue_alloc_security
) (struct msg_queue
*msq
);
1533 void (*msg_queue_free_security
) (struct msg_queue
*msq
);
1534 int (*msg_queue_associate
) (struct msg_queue
*msq
, int msqflg
);
1535 int (*msg_queue_msgctl
) (struct msg_queue
*msq
, int cmd
);
1536 int (*msg_queue_msgsnd
) (struct msg_queue
*msq
,
1537 struct msg_msg
*msg
, int msqflg
);
1538 int (*msg_queue_msgrcv
) (struct msg_queue
*msq
,
1539 struct msg_msg
*msg
,
1540 struct task_struct
*target
,
1541 long type
, int mode
);
1543 int (*shm_alloc_security
) (struct shmid_kernel
*shp
);
1544 void (*shm_free_security
) (struct shmid_kernel
*shp
);
1545 int (*shm_associate
) (struct shmid_kernel
*shp
, int shmflg
);
1546 int (*shm_shmctl
) (struct shmid_kernel
*shp
, int cmd
);
1547 int (*shm_shmat
) (struct shmid_kernel
*shp
,
1548 char __user
*shmaddr
, int shmflg
);
1550 int (*sem_alloc_security
) (struct sem_array
*sma
);
1551 void (*sem_free_security
) (struct sem_array
*sma
);
1552 int (*sem_associate
) (struct sem_array
*sma
, int semflg
);
1553 int (*sem_semctl
) (struct sem_array
*sma
, int cmd
);
1554 int (*sem_semop
) (struct sem_array
*sma
,
1555 struct sembuf
*sops
, unsigned nsops
, int alter
);
1557 int (*netlink_send
) (struct sock
*sk
, struct sk_buff
*skb
);
1558 int (*netlink_recv
) (struct sk_buff
*skb
, int cap
);
1560 void (*d_instantiate
) (struct dentry
*dentry
, struct inode
*inode
);
1562 int (*getprocattr
) (struct task_struct
*p
, char *name
, char **value
);
1563 int (*setprocattr
) (struct task_struct
*p
, char *name
, void *value
, size_t size
);
1564 int (*secid_to_secctx
) (u32 secid
, char **secdata
, u32
*seclen
);
1565 int (*secctx_to_secid
) (const char *secdata
, u32 seclen
, u32
*secid
);
1566 void (*release_secctx
) (char *secdata
, u32 seclen
);
1568 int (*inode_notifysecctx
)(struct inode
*inode
, void *ctx
, u32 ctxlen
);
1569 int (*inode_setsecctx
)(struct dentry
*dentry
, void *ctx
, u32 ctxlen
);
1570 int (*inode_getsecctx
)(struct inode
*inode
, void **ctx
, u32
*ctxlen
);
1572 #ifdef CONFIG_SECURITY_NETWORK
1573 int (*unix_stream_connect
) (struct sock
*sock
, struct sock
*other
, struct sock
*newsk
);
1574 int (*unix_may_send
) (struct socket
*sock
, struct socket
*other
);
1576 int (*socket_create
) (int family
, int type
, int protocol
, int kern
);
1577 int (*socket_post_create
) (struct socket
*sock
, int family
,
1578 int type
, int protocol
, int kern
);
1579 int (*socket_bind
) (struct socket
*sock
,
1580 struct sockaddr
*address
, int addrlen
);
1581 int (*socket_connect
) (struct socket
*sock
,
1582 struct sockaddr
*address
, int addrlen
);
1583 int (*socket_listen
) (struct socket
*sock
, int backlog
);
1584 int (*socket_accept
) (struct socket
*sock
, struct socket
*newsock
);
1585 int (*socket_sendmsg
) (struct socket
*sock
,
1586 struct msghdr
*msg
, int size
);
1587 int (*socket_recvmsg
) (struct socket
*sock
,
1588 struct msghdr
*msg
, int size
, int flags
);
1589 int (*socket_getsockname
) (struct socket
*sock
);
1590 int (*socket_getpeername
) (struct socket
*sock
);
1591 int (*socket_getsockopt
) (struct socket
*sock
, int level
, int optname
);
1592 int (*socket_setsockopt
) (struct socket
*sock
, int level
, int optname
);
1593 int (*socket_shutdown
) (struct socket
*sock
, int how
);
1594 int (*socket_sock_rcv_skb
) (struct sock
*sk
, struct sk_buff
*skb
);
1595 int (*socket_getpeersec_stream
) (struct socket
*sock
, char __user
*optval
, int __user
*optlen
, unsigned len
);
1596 int (*socket_getpeersec_dgram
) (struct socket
*sock
, struct sk_buff
*skb
, u32
*secid
);
1597 int (*sk_alloc_security
) (struct sock
*sk
, int family
, gfp_t priority
);
1598 void (*sk_free_security
) (struct sock
*sk
);
1599 void (*sk_clone_security
) (const struct sock
*sk
, struct sock
*newsk
);
1600 void (*sk_getsecid
) (struct sock
*sk
, u32
*secid
);
1601 void (*sock_graft
) (struct sock
*sk
, struct socket
*parent
);
1602 int (*inet_conn_request
) (struct sock
*sk
, struct sk_buff
*skb
,
1603 struct request_sock
*req
);
1604 void (*inet_csk_clone
) (struct sock
*newsk
, const struct request_sock
*req
);
1605 void (*inet_conn_established
) (struct sock
*sk
, struct sk_buff
*skb
);
1606 int (*secmark_relabel_packet
) (u32 secid
);
1607 void (*secmark_refcount_inc
) (void);
1608 void (*secmark_refcount_dec
) (void);
1609 void (*req_classify_flow
) (const struct request_sock
*req
, struct flowi
*fl
);
1610 int (*tun_dev_create
)(void);
1611 void (*tun_dev_post_create
)(struct sock
*sk
);
1612 int (*tun_dev_attach
)(struct sock
*sk
);
1613 #endif /* CONFIG_SECURITY_NETWORK */
1615 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1616 int (*xfrm_policy_alloc_security
) (struct xfrm_sec_ctx
**ctxp
,
1617 struct xfrm_user_sec_ctx
*sec_ctx
);
1618 int (*xfrm_policy_clone_security
) (struct xfrm_sec_ctx
*old_ctx
, struct xfrm_sec_ctx
**new_ctx
);
1619 void (*xfrm_policy_free_security
) (struct xfrm_sec_ctx
*ctx
);
1620 int (*xfrm_policy_delete_security
) (struct xfrm_sec_ctx
*ctx
);
1621 int (*xfrm_state_alloc_security
) (struct xfrm_state
*x
,
1622 struct xfrm_user_sec_ctx
*sec_ctx
,
1624 void (*xfrm_state_free_security
) (struct xfrm_state
*x
);
1625 int (*xfrm_state_delete_security
) (struct xfrm_state
*x
);
1626 int (*xfrm_policy_lookup
) (struct xfrm_sec_ctx
*ctx
, u32 fl_secid
, u8 dir
);
1627 int (*xfrm_state_pol_flow_match
) (struct xfrm_state
*x
,
1628 struct xfrm_policy
*xp
,
1629 const struct flowi
*fl
);
1630 int (*xfrm_decode_session
) (struct sk_buff
*skb
, u32
*secid
, int ckall
);
1631 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1633 /* key management security hooks */
1635 int (*key_alloc
) (struct key
*key
, const struct cred
*cred
, unsigned long flags
);
1636 void (*key_free
) (struct key
*key
);
1637 int (*key_permission
) (key_ref_t key_ref
,
1638 const struct cred
*cred
,
1640 int (*key_getsecurity
)(struct key
*key
, char **_buffer
);
1641 #endif /* CONFIG_KEYS */
1644 int (*audit_rule_init
) (u32 field
, u32 op
, char *rulestr
, void **lsmrule
);
1645 int (*audit_rule_known
) (struct audit_krule
*krule
);
1646 int (*audit_rule_match
) (u32 secid
, u32 field
, u32 op
, void *lsmrule
,
1647 struct audit_context
*actx
);
1648 void (*audit_rule_free
) (void *lsmrule
);
1649 #endif /* CONFIG_AUDIT */
1653 extern int security_init(void);
1654 extern int security_module_enable(struct security_operations
*ops
);
1655 extern int register_security(struct security_operations
*ops
);
1657 /* Security operations */
1658 int security_ptrace_access_check(struct task_struct
*child
, unsigned int mode
);
1659 int security_ptrace_traceme(struct task_struct
*parent
);
1660 int security_capget(struct task_struct
*target
,
1661 kernel_cap_t
*effective
,
1662 kernel_cap_t
*inheritable
,
1663 kernel_cap_t
*permitted
);
1664 int security_capset(struct cred
*new, const struct cred
*old
,
1665 const kernel_cap_t
*effective
,
1666 const kernel_cap_t
*inheritable
,
1667 const kernel_cap_t
*permitted
);
1668 int security_capable(const struct cred
*cred
, int cap
);
1669 int security_real_capable(struct task_struct
*tsk
, int cap
);
1670 int security_real_capable_noaudit(struct task_struct
*tsk
, int cap
);
1671 int security_quotactl(int cmds
, int type
, int id
, struct super_block
*sb
);
1672 int security_quota_on(struct dentry
*dentry
);
1673 int security_syslog(int type
);
1674 int security_settime(const struct timespec
*ts
, const struct timezone
*tz
);
1675 int security_vm_enough_memory(long pages
);
1676 int security_vm_enough_memory_mm(struct mm_struct
*mm
, long pages
);
1677 int security_vm_enough_memory_kern(long pages
);
1678 int security_bprm_set_creds(struct linux_binprm
*bprm
);
1679 int security_bprm_check(struct linux_binprm
*bprm
);
1680 void security_bprm_committing_creds(struct linux_binprm
*bprm
);
1681 void security_bprm_committed_creds(struct linux_binprm
*bprm
);
1682 int security_bprm_secureexec(struct linux_binprm
*bprm
);
1683 int security_sb_alloc(struct super_block
*sb
);
1684 void security_sb_free(struct super_block
*sb
);
1685 int security_sb_copy_data(char *orig
, char *copy
);
1686 int security_sb_remount(struct super_block
*sb
, void *data
);
1687 int security_sb_kern_mount(struct super_block
*sb
, int flags
, void *data
);
1688 int security_sb_show_options(struct seq_file
*m
, struct super_block
*sb
);
1689 int security_sb_statfs(struct dentry
*dentry
);
1690 int security_sb_mount(char *dev_name
, struct path
*path
,
1691 char *type
, unsigned long flags
, void *data
);
1692 int security_sb_umount(struct vfsmount
*mnt
, int flags
);
1693 int security_sb_pivotroot(struct path
*old_path
, struct path
*new_path
);
1694 int security_sb_set_mnt_opts(struct super_block
*sb
, struct security_mnt_opts
*opts
);
1695 void security_sb_clone_mnt_opts(const struct super_block
*oldsb
,
1696 struct super_block
*newsb
);
1697 int security_sb_parse_opts_str(char *options
, struct security_mnt_opts
*opts
);
1699 int security_inode_alloc(struct inode
*inode
);
1700 void security_inode_free(struct inode
*inode
);
1701 int security_inode_init_security(struct inode
*inode
, struct inode
*dir
,
1702 const struct qstr
*qstr
, char **name
,
1703 void **value
, size_t *len
);
1704 int security_inode_create(struct inode
*dir
, struct dentry
*dentry
, int mode
);
1705 int security_inode_link(struct dentry
*old_dentry
, struct inode
*dir
,
1706 struct dentry
*new_dentry
);
1707 int security_inode_unlink(struct inode
*dir
, struct dentry
*dentry
);
1708 int security_inode_symlink(struct inode
*dir
, struct dentry
*dentry
,
1709 const char *old_name
);
1710 int security_inode_mkdir(struct inode
*dir
, struct dentry
*dentry
, int mode
);
1711 int security_inode_rmdir(struct inode
*dir
, struct dentry
*dentry
);
1712 int security_inode_mknod(struct inode
*dir
, struct dentry
*dentry
, int mode
, dev_t dev
);
1713 int security_inode_rename(struct inode
*old_dir
, struct dentry
*old_dentry
,
1714 struct inode
*new_dir
, struct dentry
*new_dentry
);
1715 int security_inode_readlink(struct dentry
*dentry
);
1716 int security_inode_follow_link(struct dentry
*dentry
, struct nameidata
*nd
);
1717 int security_inode_permission(struct inode
*inode
, int mask
);
1718 int security_inode_exec_permission(struct inode
*inode
, unsigned int flags
);
1719 int security_inode_setattr(struct dentry
*dentry
, struct iattr
*attr
);
1720 int security_inode_getattr(struct vfsmount
*mnt
, struct dentry
*dentry
);
1721 int security_inode_setxattr(struct dentry
*dentry
, const char *name
,
1722 const void *value
, size_t size
, int flags
);
1723 void security_inode_post_setxattr(struct dentry
*dentry
, const char *name
,
1724 const void *value
, size_t size
, int flags
);
1725 int security_inode_getxattr(struct dentry
*dentry
, const char *name
);
1726 int security_inode_listxattr(struct dentry
*dentry
);
1727 int security_inode_removexattr(struct dentry
*dentry
, const char *name
);
1728 int security_inode_need_killpriv(struct dentry
*dentry
);
1729 int security_inode_killpriv(struct dentry
*dentry
);
1730 int security_inode_getsecurity(const struct inode
*inode
, const char *name
, void **buffer
, bool alloc
);
1731 int security_inode_setsecurity(struct inode
*inode
, const char *name
, const void *value
, size_t size
, int flags
);
1732 int security_inode_listsecurity(struct inode
*inode
, char *buffer
, size_t buffer_size
);
1733 void security_inode_getsecid(const struct inode
*inode
, u32
*secid
);
1734 int security_file_permission(struct file
*file
, int mask
);
1735 int security_file_alloc(struct file
*file
);
1736 void security_file_free(struct file
*file
);
1737 int security_file_ioctl(struct file
*file
, unsigned int cmd
, unsigned long arg
);
1738 int security_file_mmap(struct file
*file
, unsigned long reqprot
,
1739 unsigned long prot
, unsigned long flags
,
1740 unsigned long addr
, unsigned long addr_only
);
1741 int security_file_mprotect(struct vm_area_struct
*vma
, unsigned long reqprot
,
1742 unsigned long prot
);
1743 int security_file_lock(struct file
*file
, unsigned int cmd
);
1744 int security_file_fcntl(struct file
*file
, unsigned int cmd
, unsigned long arg
);
1745 int security_file_set_fowner(struct file
*file
);
1746 int security_file_send_sigiotask(struct task_struct
*tsk
,
1747 struct fown_struct
*fown
, int sig
);
1748 int security_file_receive(struct file
*file
);
1749 int security_dentry_open(struct file
*file
, const struct cred
*cred
);
1750 int security_task_create(unsigned long clone_flags
);
1751 int security_cred_alloc_blank(struct cred
*cred
, gfp_t gfp
);
1752 void security_cred_free(struct cred
*cred
);
1753 int security_prepare_creds(struct cred
*new, const struct cred
*old
, gfp_t gfp
);
1754 void security_transfer_creds(struct cred
*new, const struct cred
*old
);
1755 int security_kernel_act_as(struct cred
*new, u32 secid
);
1756 int security_kernel_create_files_as(struct cred
*new, struct inode
*inode
);
1757 int security_kernel_module_request(char *kmod_name
);
1758 int security_task_fix_setuid(struct cred
*new, const struct cred
*old
,
1760 int security_task_setpgid(struct task_struct
*p
, pid_t pgid
);
1761 int security_task_getpgid(struct task_struct
*p
);
1762 int security_task_getsid(struct task_struct
*p
);
1763 void security_task_getsecid(struct task_struct
*p
, u32
*secid
);
1764 int security_task_setnice(struct task_struct
*p
, int nice
);
1765 int security_task_setioprio(struct task_struct
*p
, int ioprio
);
1766 int security_task_getioprio(struct task_struct
*p
);
1767 int security_task_setrlimit(struct task_struct
*p
, unsigned int resource
,
1768 struct rlimit
*new_rlim
);
1769 int security_task_setscheduler(struct task_struct
*p
);
1770 int security_task_getscheduler(struct task_struct
*p
);
1771 int security_task_movememory(struct task_struct
*p
);
1772 int security_task_kill(struct task_struct
*p
, struct siginfo
*info
,
1773 int sig
, u32 secid
);
1774 int security_task_wait(struct task_struct
*p
);
1775 int security_task_prctl(int option
, unsigned long arg2
, unsigned long arg3
,
1776 unsigned long arg4
, unsigned long arg5
);
1777 void security_task_to_inode(struct task_struct
*p
, struct inode
*inode
);
1778 int security_ipc_permission(struct kern_ipc_perm
*ipcp
, short flag
);
1779 void security_ipc_getsecid(struct kern_ipc_perm
*ipcp
, u32
*secid
);
1780 int security_msg_msg_alloc(struct msg_msg
*msg
);
1781 void security_msg_msg_free(struct msg_msg
*msg
);
1782 int security_msg_queue_alloc(struct msg_queue
*msq
);
1783 void security_msg_queue_free(struct msg_queue
*msq
);
1784 int security_msg_queue_associate(struct msg_queue
*msq
, int msqflg
);
1785 int security_msg_queue_msgctl(struct msg_queue
*msq
, int cmd
);
1786 int security_msg_queue_msgsnd(struct msg_queue
*msq
,
1787 struct msg_msg
*msg
, int msqflg
);
1788 int security_msg_queue_msgrcv(struct msg_queue
*msq
, struct msg_msg
*msg
,
1789 struct task_struct
*target
, long type
, int mode
);
1790 int security_shm_alloc(struct shmid_kernel
*shp
);
1791 void security_shm_free(struct shmid_kernel
*shp
);
1792 int security_shm_associate(struct shmid_kernel
*shp
, int shmflg
);
1793 int security_shm_shmctl(struct shmid_kernel
*shp
, int cmd
);
1794 int security_shm_shmat(struct shmid_kernel
*shp
, char __user
*shmaddr
, int shmflg
);
1795 int security_sem_alloc(struct sem_array
*sma
);
1796 void security_sem_free(struct sem_array
*sma
);
1797 int security_sem_associate(struct sem_array
*sma
, int semflg
);
1798 int security_sem_semctl(struct sem_array
*sma
, int cmd
);
1799 int security_sem_semop(struct sem_array
*sma
, struct sembuf
*sops
,
1800 unsigned nsops
, int alter
);
1801 void security_d_instantiate(struct dentry
*dentry
, struct inode
*inode
);
1802 int security_getprocattr(struct task_struct
*p
, char *name
, char **value
);
1803 int security_setprocattr(struct task_struct
*p
, char *name
, void *value
, size_t size
);
1804 int security_netlink_send(struct sock
*sk
, struct sk_buff
*skb
);
1805 int security_netlink_recv(struct sk_buff
*skb
, int cap
);
1806 int security_secid_to_secctx(u32 secid
, char **secdata
, u32
*seclen
);
1807 int security_secctx_to_secid(const char *secdata
, u32 seclen
, u32
*secid
);
1808 void security_release_secctx(char *secdata
, u32 seclen
);
1810 int security_inode_notifysecctx(struct inode
*inode
, void *ctx
, u32 ctxlen
);
1811 int security_inode_setsecctx(struct dentry
*dentry
, void *ctx
, u32 ctxlen
);
1812 int security_inode_getsecctx(struct inode
*inode
, void **ctx
, u32
*ctxlen
);
1813 #else /* CONFIG_SECURITY */
1814 struct security_mnt_opts
{
1817 static inline void security_init_mnt_opts(struct security_mnt_opts
*opts
)
1821 static inline void security_free_mnt_opts(struct security_mnt_opts
*opts
)
1826 * This is the default capabilities functionality. Most of these functions
1827 * are just stubbed out, but a few must call the proper capable code.
1830 static inline int security_init(void)
1835 static inline int security_ptrace_access_check(struct task_struct
*child
,
1838 return cap_ptrace_access_check(child
, mode
);
1841 static inline int security_ptrace_traceme(struct task_struct
*parent
)
1843 return cap_ptrace_traceme(parent
);
1846 static inline int security_capget(struct task_struct
*target
,
1847 kernel_cap_t
*effective
,
1848 kernel_cap_t
*inheritable
,
1849 kernel_cap_t
*permitted
)
1851 return cap_capget(target
, effective
, inheritable
, permitted
);
1854 static inline int security_capset(struct cred
*new,
1855 const struct cred
*old
,
1856 const kernel_cap_t
*effective
,
1857 const kernel_cap_t
*inheritable
,
1858 const kernel_cap_t
*permitted
)
1860 return cap_capset(new, old
, effective
, inheritable
, permitted
);
1863 static inline int security_capable(const struct cred
*cred
, int cap
)
1865 return cap_capable(current
, cred
, cap
, SECURITY_CAP_AUDIT
);
1868 static inline int security_real_capable(struct task_struct
*tsk
, int cap
)
1873 ret
= cap_capable(tsk
, __task_cred(tsk
), cap
, SECURITY_CAP_AUDIT
);
1879 int security_real_capable_noaudit(struct task_struct
*tsk
, int cap
)
1884 ret
= cap_capable(tsk
, __task_cred(tsk
), cap
,
1885 SECURITY_CAP_NOAUDIT
);
1890 static inline int security_quotactl(int cmds
, int type
, int id
,
1891 struct super_block
*sb
)
1896 static inline int security_quota_on(struct dentry
*dentry
)
1901 static inline int security_syslog(int type
)
1906 static inline int security_settime(const struct timespec
*ts
,
1907 const struct timezone
*tz
)
1909 return cap_settime(ts
, tz
);
1912 static inline int security_vm_enough_memory(long pages
)
1914 WARN_ON(current
->mm
== NULL
);
1915 return cap_vm_enough_memory(current
->mm
, pages
);
1918 static inline int security_vm_enough_memory_mm(struct mm_struct
*mm
, long pages
)
1920 WARN_ON(mm
== NULL
);
1921 return cap_vm_enough_memory(mm
, pages
);
1924 static inline int security_vm_enough_memory_kern(long pages
)
1926 /* If current->mm is a kernel thread then we will pass NULL,
1927 for this specific case that is fine */
1928 return cap_vm_enough_memory(current
->mm
, pages
);
1931 static inline int security_bprm_set_creds(struct linux_binprm
*bprm
)
1933 return cap_bprm_set_creds(bprm
);
1936 static inline int security_bprm_check(struct linux_binprm
*bprm
)
1941 static inline void security_bprm_committing_creds(struct linux_binprm
*bprm
)
1945 static inline void security_bprm_committed_creds(struct linux_binprm
*bprm
)
1949 static inline int security_bprm_secureexec(struct linux_binprm
*bprm
)
1951 return cap_bprm_secureexec(bprm
);
1954 static inline int security_sb_alloc(struct super_block
*sb
)
1959 static inline void security_sb_free(struct super_block
*sb
)
1962 static inline int security_sb_copy_data(char *orig
, char *copy
)
1967 static inline int security_sb_remount(struct super_block
*sb
, void *data
)
1972 static inline int security_sb_kern_mount(struct super_block
*sb
, int flags
, void *data
)
1977 static inline int security_sb_show_options(struct seq_file
*m
,
1978 struct super_block
*sb
)
1983 static inline int security_sb_statfs(struct dentry
*dentry
)
1988 static inline int security_sb_mount(char *dev_name
, struct path
*path
,
1989 char *type
, unsigned long flags
,
1995 static inline int security_sb_umount(struct vfsmount
*mnt
, int flags
)
2000 static inline int security_sb_pivotroot(struct path
*old_path
,
2001 struct path
*new_path
)
2006 static inline int security_sb_set_mnt_opts(struct super_block
*sb
,
2007 struct security_mnt_opts
*opts
)
2012 static inline void security_sb_clone_mnt_opts(const struct super_block
*oldsb
,
2013 struct super_block
*newsb
)
2016 static inline int security_sb_parse_opts_str(char *options
, struct security_mnt_opts
*opts
)
2021 static inline int security_inode_alloc(struct inode
*inode
)
2026 static inline void security_inode_free(struct inode
*inode
)
2029 static inline int security_inode_init_security(struct inode
*inode
,
2031 const struct qstr
*qstr
,
2039 static inline int security_inode_create(struct inode
*dir
,
2040 struct dentry
*dentry
,
2046 static inline int security_inode_link(struct dentry
*old_dentry
,
2048 struct dentry
*new_dentry
)
2053 static inline int security_inode_unlink(struct inode
*dir
,
2054 struct dentry
*dentry
)
2059 static inline int security_inode_symlink(struct inode
*dir
,
2060 struct dentry
*dentry
,
2061 const char *old_name
)
2066 static inline int security_inode_mkdir(struct inode
*dir
,
2067 struct dentry
*dentry
,
2073 static inline int security_inode_rmdir(struct inode
*dir
,
2074 struct dentry
*dentry
)
2079 static inline int security_inode_mknod(struct inode
*dir
,
2080 struct dentry
*dentry
,
2081 int mode
, dev_t dev
)
2086 static inline int security_inode_rename(struct inode
*old_dir
,
2087 struct dentry
*old_dentry
,
2088 struct inode
*new_dir
,
2089 struct dentry
*new_dentry
)
2094 static inline int security_inode_readlink(struct dentry
*dentry
)
2099 static inline int security_inode_follow_link(struct dentry
*dentry
,
2100 struct nameidata
*nd
)
2105 static inline int security_inode_permission(struct inode
*inode
, int mask
)
2110 static inline int security_inode_exec_permission(struct inode
*inode
,
2116 static inline int security_inode_setattr(struct dentry
*dentry
,
2122 static inline int security_inode_getattr(struct vfsmount
*mnt
,
2123 struct dentry
*dentry
)
2128 static inline int security_inode_setxattr(struct dentry
*dentry
,
2129 const char *name
, const void *value
, size_t size
, int flags
)
2131 return cap_inode_setxattr(dentry
, name
, value
, size
, flags
);
2134 static inline void security_inode_post_setxattr(struct dentry
*dentry
,
2135 const char *name
, const void *value
, size_t size
, int flags
)
2138 static inline int security_inode_getxattr(struct dentry
*dentry
,
2144 static inline int security_inode_listxattr(struct dentry
*dentry
)
2149 static inline int security_inode_removexattr(struct dentry
*dentry
,
2152 return cap_inode_removexattr(dentry
, name
);
2155 static inline int security_inode_need_killpriv(struct dentry
*dentry
)
2157 return cap_inode_need_killpriv(dentry
);
2160 static inline int security_inode_killpriv(struct dentry
*dentry
)
2162 return cap_inode_killpriv(dentry
);
2165 static inline int security_inode_getsecurity(const struct inode
*inode
, const char *name
, void **buffer
, bool alloc
)
2170 static inline int security_inode_setsecurity(struct inode
*inode
, const char *name
, const void *value
, size_t size
, int flags
)
2175 static inline int security_inode_listsecurity(struct inode
*inode
, char *buffer
, size_t buffer_size
)
2180 static inline void security_inode_getsecid(const struct inode
*inode
, u32
*secid
)
2185 static inline int security_file_permission(struct file
*file
, int mask
)
2190 static inline int security_file_alloc(struct file
*file
)
2195 static inline void security_file_free(struct file
*file
)
2198 static inline int security_file_ioctl(struct file
*file
, unsigned int cmd
,
2204 static inline int security_file_mmap(struct file
*file
, unsigned long reqprot
,
2206 unsigned long flags
,
2208 unsigned long addr_only
)
2210 return cap_file_mmap(file
, reqprot
, prot
, flags
, addr
, addr_only
);
2213 static inline int security_file_mprotect(struct vm_area_struct
*vma
,
2214 unsigned long reqprot
,
2220 static inline int security_file_lock(struct file
*file
, unsigned int cmd
)
2225 static inline int security_file_fcntl(struct file
*file
, unsigned int cmd
,
2231 static inline int security_file_set_fowner(struct file
*file
)
2236 static inline int security_file_send_sigiotask(struct task_struct
*tsk
,
2237 struct fown_struct
*fown
,
2243 static inline int security_file_receive(struct file
*file
)
2248 static inline int security_dentry_open(struct file
*file
,
2249 const struct cred
*cred
)
2254 static inline int security_task_create(unsigned long clone_flags
)
2259 static inline int security_cred_alloc_blank(struct cred
*cred
, gfp_t gfp
)
2264 static inline void security_cred_free(struct cred
*cred
)
2267 static inline int security_prepare_creds(struct cred
*new,
2268 const struct cred
*old
,
2274 static inline void security_transfer_creds(struct cred
*new,
2275 const struct cred
*old
)
2279 static inline int security_kernel_act_as(struct cred
*cred
, u32 secid
)
2284 static inline int security_kernel_create_files_as(struct cred
*cred
,
2285 struct inode
*inode
)
2290 static inline int security_kernel_module_request(char *kmod_name
)
2295 static inline int security_task_fix_setuid(struct cred
*new,
2296 const struct cred
*old
,
2299 return cap_task_fix_setuid(new, old
, flags
);
2302 static inline int security_task_setpgid(struct task_struct
*p
, pid_t pgid
)
2307 static inline int security_task_getpgid(struct task_struct
*p
)
2312 static inline int security_task_getsid(struct task_struct
*p
)
2317 static inline void security_task_getsecid(struct task_struct
*p
, u32
*secid
)
2322 static inline int security_task_setnice(struct task_struct
*p
, int nice
)
2324 return cap_task_setnice(p
, nice
);
2327 static inline int security_task_setioprio(struct task_struct
*p
, int ioprio
)
2329 return cap_task_setioprio(p
, ioprio
);
2332 static inline int security_task_getioprio(struct task_struct
*p
)
2337 static inline int security_task_setrlimit(struct task_struct
*p
,
2338 unsigned int resource
,
2339 struct rlimit
*new_rlim
)
2344 static inline int security_task_setscheduler(struct task_struct
*p
)
2346 return cap_task_setscheduler(p
);
2349 static inline int security_task_getscheduler(struct task_struct
*p
)
2354 static inline int security_task_movememory(struct task_struct
*p
)
2359 static inline int security_task_kill(struct task_struct
*p
,
2360 struct siginfo
*info
, int sig
,
2366 static inline int security_task_wait(struct task_struct
*p
)
2371 static inline int security_task_prctl(int option
, unsigned long arg2
,
2376 return cap_task_prctl(option
, arg2
, arg3
, arg3
, arg5
);
2379 static inline void security_task_to_inode(struct task_struct
*p
, struct inode
*inode
)
2382 static inline int security_ipc_permission(struct kern_ipc_perm
*ipcp
,
2388 static inline void security_ipc_getsecid(struct kern_ipc_perm
*ipcp
, u32
*secid
)
2393 static inline int security_msg_msg_alloc(struct msg_msg
*msg
)
2398 static inline void security_msg_msg_free(struct msg_msg
*msg
)
2401 static inline int security_msg_queue_alloc(struct msg_queue
*msq
)
2406 static inline void security_msg_queue_free(struct msg_queue
*msq
)
2409 static inline int security_msg_queue_associate(struct msg_queue
*msq
,
2415 static inline int security_msg_queue_msgctl(struct msg_queue
*msq
, int cmd
)
2420 static inline int security_msg_queue_msgsnd(struct msg_queue
*msq
,
2421 struct msg_msg
*msg
, int msqflg
)
2426 static inline int security_msg_queue_msgrcv(struct msg_queue
*msq
,
2427 struct msg_msg
*msg
,
2428 struct task_struct
*target
,
2429 long type
, int mode
)
2434 static inline int security_shm_alloc(struct shmid_kernel
*shp
)
2439 static inline void security_shm_free(struct shmid_kernel
*shp
)
2442 static inline int security_shm_associate(struct shmid_kernel
*shp
,
2448 static inline int security_shm_shmctl(struct shmid_kernel
*shp
, int cmd
)
2453 static inline int security_shm_shmat(struct shmid_kernel
*shp
,
2454 char __user
*shmaddr
, int shmflg
)
2459 static inline int security_sem_alloc(struct sem_array
*sma
)
2464 static inline void security_sem_free(struct sem_array
*sma
)
2467 static inline int security_sem_associate(struct sem_array
*sma
, int semflg
)
2472 static inline int security_sem_semctl(struct sem_array
*sma
, int cmd
)
2477 static inline int security_sem_semop(struct sem_array
*sma
,
2478 struct sembuf
*sops
, unsigned nsops
,
2484 static inline void security_d_instantiate(struct dentry
*dentry
, struct inode
*inode
)
2487 static inline int security_getprocattr(struct task_struct
*p
, char *name
, char **value
)
2492 static inline int security_setprocattr(struct task_struct
*p
, char *name
, void *value
, size_t size
)
2497 static inline int security_netlink_send(struct sock
*sk
, struct sk_buff
*skb
)
2499 return cap_netlink_send(sk
, skb
);
2502 static inline int security_netlink_recv(struct sk_buff
*skb
, int cap
)
2504 return cap_netlink_recv(skb
, cap
);
2507 static inline int security_secid_to_secctx(u32 secid
, char **secdata
, u32
*seclen
)
2512 static inline int security_secctx_to_secid(const char *secdata
,
2519 static inline void security_release_secctx(char *secdata
, u32 seclen
)
2523 static inline int security_inode_notifysecctx(struct inode
*inode
, void *ctx
, u32 ctxlen
)
2527 static inline int security_inode_setsecctx(struct dentry
*dentry
, void *ctx
, u32 ctxlen
)
2531 static inline int security_inode_getsecctx(struct inode
*inode
, void **ctx
, u32
*ctxlen
)
2535 #endif /* CONFIG_SECURITY */
2537 #ifdef CONFIG_SECURITY_NETWORK
2539 int security_unix_stream_connect(struct sock
*sock
, struct sock
*other
, struct sock
*newsk
);
2540 int security_unix_may_send(struct socket
*sock
, struct socket
*other
);
2541 int security_socket_create(int family
, int type
, int protocol
, int kern
);
2542 int security_socket_post_create(struct socket
*sock
, int family
,
2543 int type
, int protocol
, int kern
);
2544 int security_socket_bind(struct socket
*sock
, struct sockaddr
*address
, int addrlen
);
2545 int security_socket_connect(struct socket
*sock
, struct sockaddr
*address
, int addrlen
);
2546 int security_socket_listen(struct socket
*sock
, int backlog
);
2547 int security_socket_accept(struct socket
*sock
, struct socket
*newsock
);
2548 int security_socket_sendmsg(struct socket
*sock
, struct msghdr
*msg
, int size
);
2549 int security_socket_recvmsg(struct socket
*sock
, struct msghdr
*msg
,
2550 int size
, int flags
);
2551 int security_socket_getsockname(struct socket
*sock
);
2552 int security_socket_getpeername(struct socket
*sock
);
2553 int security_socket_getsockopt(struct socket
*sock
, int level
, int optname
);
2554 int security_socket_setsockopt(struct socket
*sock
, int level
, int optname
);
2555 int security_socket_shutdown(struct socket
*sock
, int how
);
2556 int security_sock_rcv_skb(struct sock
*sk
, struct sk_buff
*skb
);
2557 int security_socket_getpeersec_stream(struct socket
*sock
, char __user
*optval
,
2558 int __user
*optlen
, unsigned len
);
2559 int security_socket_getpeersec_dgram(struct socket
*sock
, struct sk_buff
*skb
, u32
*secid
);
2560 int security_sk_alloc(struct sock
*sk
, int family
, gfp_t priority
);
2561 void security_sk_free(struct sock
*sk
);
2562 void security_sk_clone(const struct sock
*sk
, struct sock
*newsk
);
2563 void security_sk_classify_flow(struct sock
*sk
, struct flowi
*fl
);
2564 void security_req_classify_flow(const struct request_sock
*req
, struct flowi
*fl
);
2565 void security_sock_graft(struct sock
*sk
, struct socket
*parent
);
2566 int security_inet_conn_request(struct sock
*sk
,
2567 struct sk_buff
*skb
, struct request_sock
*req
);
2568 void security_inet_csk_clone(struct sock
*newsk
,
2569 const struct request_sock
*req
);
2570 void security_inet_conn_established(struct sock
*sk
,
2571 struct sk_buff
*skb
);
2572 int security_secmark_relabel_packet(u32 secid
);
2573 void security_secmark_refcount_inc(void);
2574 void security_secmark_refcount_dec(void);
2575 int security_tun_dev_create(void);
2576 void security_tun_dev_post_create(struct sock
*sk
);
2577 int security_tun_dev_attach(struct sock
*sk
);
2579 #else /* CONFIG_SECURITY_NETWORK */
2580 static inline int security_unix_stream_connect(struct sock
*sock
,
2587 static inline int security_unix_may_send(struct socket
*sock
,
2588 struct socket
*other
)
2593 static inline int security_socket_create(int family
, int type
,
2594 int protocol
, int kern
)
2599 static inline int security_socket_post_create(struct socket
*sock
,
2602 int protocol
, int kern
)
2607 static inline int security_socket_bind(struct socket
*sock
,
2608 struct sockaddr
*address
,
2614 static inline int security_socket_connect(struct socket
*sock
,
2615 struct sockaddr
*address
,
2621 static inline int security_socket_listen(struct socket
*sock
, int backlog
)
2626 static inline int security_socket_accept(struct socket
*sock
,
2627 struct socket
*newsock
)
2632 static inline int security_socket_sendmsg(struct socket
*sock
,
2633 struct msghdr
*msg
, int size
)
2638 static inline int security_socket_recvmsg(struct socket
*sock
,
2639 struct msghdr
*msg
, int size
,
2645 static inline int security_socket_getsockname(struct socket
*sock
)
2650 static inline int security_socket_getpeername(struct socket
*sock
)
2655 static inline int security_socket_getsockopt(struct socket
*sock
,
2656 int level
, int optname
)
2661 static inline int security_socket_setsockopt(struct socket
*sock
,
2662 int level
, int optname
)
2667 static inline int security_socket_shutdown(struct socket
*sock
, int how
)
2671 static inline int security_sock_rcv_skb(struct sock
*sk
,
2672 struct sk_buff
*skb
)
2677 static inline int security_socket_getpeersec_stream(struct socket
*sock
, char __user
*optval
,
2678 int __user
*optlen
, unsigned len
)
2680 return -ENOPROTOOPT
;
2683 static inline int security_socket_getpeersec_dgram(struct socket
*sock
, struct sk_buff
*skb
, u32
*secid
)
2685 return -ENOPROTOOPT
;
2688 static inline int security_sk_alloc(struct sock
*sk
, int family
, gfp_t priority
)
2693 static inline void security_sk_free(struct sock
*sk
)
2697 static inline void security_sk_clone(const struct sock
*sk
, struct sock
*newsk
)
2701 static inline void security_sk_classify_flow(struct sock
*sk
, struct flowi
*fl
)
2705 static inline void security_req_classify_flow(const struct request_sock
*req
, struct flowi
*fl
)
2709 static inline void security_sock_graft(struct sock
*sk
, struct socket
*parent
)
2713 static inline int security_inet_conn_request(struct sock
*sk
,
2714 struct sk_buff
*skb
, struct request_sock
*req
)
2719 static inline void security_inet_csk_clone(struct sock
*newsk
,
2720 const struct request_sock
*req
)
2724 static inline void security_inet_conn_established(struct sock
*sk
,
2725 struct sk_buff
*skb
)
2729 static inline int security_secmark_relabel_packet(u32 secid
)
2734 static inline void security_secmark_refcount_inc(void)
2738 static inline void security_secmark_refcount_dec(void)
2742 static inline int security_tun_dev_create(void)
2747 static inline void security_tun_dev_post_create(struct sock
*sk
)
2751 static inline int security_tun_dev_attach(struct sock
*sk
)
2755 #endif /* CONFIG_SECURITY_NETWORK */
2757 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2759 int security_xfrm_policy_alloc(struct xfrm_sec_ctx
**ctxp
, struct xfrm_user_sec_ctx
*sec_ctx
);
2760 int security_xfrm_policy_clone(struct xfrm_sec_ctx
*old_ctx
, struct xfrm_sec_ctx
**new_ctxp
);
2761 void security_xfrm_policy_free(struct xfrm_sec_ctx
*ctx
);
2762 int security_xfrm_policy_delete(struct xfrm_sec_ctx
*ctx
);
2763 int security_xfrm_state_alloc(struct xfrm_state
*x
, struct xfrm_user_sec_ctx
*sec_ctx
);
2764 int security_xfrm_state_alloc_acquire(struct xfrm_state
*x
,
2765 struct xfrm_sec_ctx
*polsec
, u32 secid
);
2766 int security_xfrm_state_delete(struct xfrm_state
*x
);
2767 void security_xfrm_state_free(struct xfrm_state
*x
);
2768 int security_xfrm_policy_lookup(struct xfrm_sec_ctx
*ctx
, u32 fl_secid
, u8 dir
);
2769 int security_xfrm_state_pol_flow_match(struct xfrm_state
*x
,
2770 struct xfrm_policy
*xp
,
2771 const struct flowi
*fl
);
2772 int security_xfrm_decode_session(struct sk_buff
*skb
, u32
*secid
);
2773 void security_skb_classify_flow(struct sk_buff
*skb
, struct flowi
*fl
);
2775 #else /* CONFIG_SECURITY_NETWORK_XFRM */
2777 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx
**ctxp
, struct xfrm_user_sec_ctx
*sec_ctx
)
2782 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx
*old
, struct xfrm_sec_ctx
**new_ctxp
)
2787 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx
*ctx
)
2791 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx
*ctx
)
2796 static inline int security_xfrm_state_alloc(struct xfrm_state
*x
,
2797 struct xfrm_user_sec_ctx
*sec_ctx
)
2802 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state
*x
,
2803 struct xfrm_sec_ctx
*polsec
, u32 secid
)
2808 static inline void security_xfrm_state_free(struct xfrm_state
*x
)
2812 static inline int security_xfrm_state_delete(struct xfrm_state
*x
)
2817 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx
*ctx
, u32 fl_secid
, u8 dir
)
2822 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state
*x
,
2823 struct xfrm_policy
*xp
, const struct flowi
*fl
)
2828 static inline int security_xfrm_decode_session(struct sk_buff
*skb
, u32
*secid
)
2833 static inline void security_skb_classify_flow(struct sk_buff
*skb
, struct flowi
*fl
)
2837 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2839 #ifdef CONFIG_SECURITY_PATH
2840 int security_path_unlink(struct path
*dir
, struct dentry
*dentry
);
2841 int security_path_mkdir(struct path
*dir
, struct dentry
*dentry
, int mode
);
2842 int security_path_rmdir(struct path
*dir
, struct dentry
*dentry
);
2843 int security_path_mknod(struct path
*dir
, struct dentry
*dentry
, int mode
,
2845 int security_path_truncate(struct path
*path
);
2846 int security_path_symlink(struct path
*dir
, struct dentry
*dentry
,
2847 const char *old_name
);
2848 int security_path_link(struct dentry
*old_dentry
, struct path
*new_dir
,
2849 struct dentry
*new_dentry
);
2850 int security_path_rename(struct path
*old_dir
, struct dentry
*old_dentry
,
2851 struct path
*new_dir
, struct dentry
*new_dentry
);
2852 int security_path_chmod(struct dentry
*dentry
, struct vfsmount
*mnt
,
2854 int security_path_chown(struct path
*path
, uid_t uid
, gid_t gid
);
2855 int security_path_chroot(struct path
*path
);
2856 #else /* CONFIG_SECURITY_PATH */
2857 static inline int security_path_unlink(struct path
*dir
, struct dentry
*dentry
)
2862 static inline int security_path_mkdir(struct path
*dir
, struct dentry
*dentry
,
2868 static inline int security_path_rmdir(struct path
*dir
, struct dentry
*dentry
)
2873 static inline int security_path_mknod(struct path
*dir
, struct dentry
*dentry
,
2874 int mode
, unsigned int dev
)
2879 static inline int security_path_truncate(struct path
*path
)
2884 static inline int security_path_symlink(struct path
*dir
, struct dentry
*dentry
,
2885 const char *old_name
)
2890 static inline int security_path_link(struct dentry
*old_dentry
,
2891 struct path
*new_dir
,
2892 struct dentry
*new_dentry
)
2897 static inline int security_path_rename(struct path
*old_dir
,
2898 struct dentry
*old_dentry
,
2899 struct path
*new_dir
,
2900 struct dentry
*new_dentry
)
2905 static inline int security_path_chmod(struct dentry
*dentry
,
2906 struct vfsmount
*mnt
,
2912 static inline int security_path_chown(struct path
*path
, uid_t uid
, gid_t gid
)
2917 static inline int security_path_chroot(struct path
*path
)
2921 #endif /* CONFIG_SECURITY_PATH */
2924 #ifdef CONFIG_SECURITY
2926 int security_key_alloc(struct key
*key
, const struct cred
*cred
, unsigned long flags
);
2927 void security_key_free(struct key
*key
);
2928 int security_key_permission(key_ref_t key_ref
,
2929 const struct cred
*cred
, key_perm_t perm
);
2930 int security_key_getsecurity(struct key
*key
, char **_buffer
);
2934 static inline int security_key_alloc(struct key
*key
,
2935 const struct cred
*cred
,
2936 unsigned long flags
)
2941 static inline void security_key_free(struct key
*key
)
2945 static inline int security_key_permission(key_ref_t key_ref
,
2946 const struct cred
*cred
,
2952 static inline int security_key_getsecurity(struct key
*key
, char **_buffer
)
2959 #endif /* CONFIG_KEYS */
2962 #ifdef CONFIG_SECURITY
2963 int security_audit_rule_init(u32 field
, u32 op
, char *rulestr
, void **lsmrule
);
2964 int security_audit_rule_known(struct audit_krule
*krule
);
2965 int security_audit_rule_match(u32 secid
, u32 field
, u32 op
, void *lsmrule
,
2966 struct audit_context
*actx
);
2967 void security_audit_rule_free(void *lsmrule
);
2971 static inline int security_audit_rule_init(u32 field
, u32 op
, char *rulestr
,
2977 static inline int security_audit_rule_known(struct audit_krule
*krule
)
2982 static inline int security_audit_rule_match(u32 secid
, u32 field
, u32 op
,
2983 void *lsmrule
, struct audit_context
*actx
)
2988 static inline void security_audit_rule_free(void *lsmrule
)
2991 #endif /* CONFIG_SECURITY */
2992 #endif /* CONFIG_AUDIT */
2994 #ifdef CONFIG_SECURITYFS
2996 extern struct dentry
*securityfs_create_file(const char *name
, mode_t mode
,
2997 struct dentry
*parent
, void *data
,
2998 const struct file_operations
*fops
);
2999 extern struct dentry
*securityfs_create_dir(const char *name
, struct dentry
*parent
);
3000 extern void securityfs_remove(struct dentry
*dentry
);
3002 #else /* CONFIG_SECURITYFS */
3004 static inline struct dentry
*securityfs_create_dir(const char *name
,
3005 struct dentry
*parent
)
3007 return ERR_PTR(-ENODEV
);
3010 static inline struct dentry
*securityfs_create_file(const char *name
,
3012 struct dentry
*parent
,
3014 const struct file_operations
*fops
)
3016 return ERR_PTR(-ENODEV
);
3019 static inline void securityfs_remove(struct dentry
*dentry
)
3024 #ifdef CONFIG_SECURITY
3026 static inline char *alloc_secdata(void)
3028 return (char *)get_zeroed_page(GFP_KERNEL
);
3031 static inline void free_secdata(void *secdata
)
3033 free_page((unsigned long)secdata
);
3038 static inline char *alloc_secdata(void)
3043 static inline void free_secdata(void *secdata
)
3045 #endif /* CONFIG_SECURITY */
3047 #endif /* ! __LINUX_SECURITY_H */