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/binfmts.h>
27 #include <linux/signal.h>
28 #include <linux/resource.h>
29 #include <linux/sem.h>
30 #include <linux/shm.h>
31 #include <linux/mm.h> /* PAGE_ALIGN */
32 #include <linux/msg.h>
33 #include <linux/sched.h>
34 #include <linux/key.h>
35 #include <linux/xfrm.h>
36 #include <linux/gfp.h>
39 /* Maximum number of letters for an LSM name string */
40 #define SECURITY_NAME_MAX 10
42 /* If capable should audit the security request */
43 #define SECURITY_CAP_NOAUDIT 0
44 #define SECURITY_CAP_AUDIT 1
50 * These functions are in security/capability.c and are used
51 * as the default capabilities functions
53 extern int cap_capable(struct task_struct *tsk, const struct cred *cred,
55 extern int cap_settime(struct timespec *ts, struct timezone *tz);
56 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
57 extern int cap_ptrace_traceme(struct task_struct *parent);
58 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
59 extern int cap_capset(struct cred *new, const struct cred *old,
60 const kernel_cap_t *effective,
61 const kernel_cap_t *inheritable,
62 const kernel_cap_t *permitted);
63 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
64 extern int cap_bprm_secureexec(struct linux_binprm *bprm);
65 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
66 const void *value, size_t size, int flags);
67 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
68 extern int cap_inode_need_killpriv(struct dentry *dentry);
69 extern int cap_inode_killpriv(struct dentry *dentry);
70 extern int cap_file_mmap(struct file *file, unsigned long reqprot,
71 unsigned long prot, unsigned long flags,
72 unsigned long addr, unsigned long addr_only);
73 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
74 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
75 unsigned long arg4, unsigned long arg5);
76 extern int cap_task_setscheduler(struct task_struct *p, int policy, struct sched_param *lp);
77 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
78 extern int cap_task_setnice(struct task_struct *p, int nice);
79 extern int cap_syslog(int type);
80 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
92 struct xfrm_user_sec_ctx;
95 extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
96 extern int cap_netlink_recv(struct sk_buff *skb, int cap);
98 extern unsigned long mmap_min_addr;
99 extern unsigned long dac_mmap_min_addr;
101 * Values used in the task_security_ops calls
103 /* setuid or setgid, id0 == uid or gid */
104 #define LSM_SETID_ID 1
106 /* setreuid or setregid, id0 == real, id1 == eff */
107 #define LSM_SETID_RE 2
109 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
110 #define LSM_SETID_RES 4
112 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
113 #define LSM_SETID_FS 8
115 /* forward declares to avoid warnings */
119 /* bprm->unsafe reasons */
120 #define LSM_UNSAFE_SHARE 1
121 #define LSM_UNSAFE_PTRACE 2
122 #define LSM_UNSAFE_PTRACE_CAP 4
125 * If a hint addr is less than mmap_min_addr change hint to be as
126 * low as possible but still greater than mmap_min_addr
128 static inline unsigned long round_hint_to_min(unsigned long hint)
131 if (((void *)hint != NULL) &&
132 (hint < mmap_min_addr))
133 return PAGE_ALIGN(mmap_min_addr);
136 extern int mmap_min_addr_handler(struct ctl_table *table, int write, struct file *filp,
137 void __user *buffer, size_t *lenp, loff_t *ppos);
139 #ifdef CONFIG_SECURITY
141 struct security_mnt_opts {
147 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
149 opts->mnt_opts = NULL;
150 opts->mnt_opts_flags = NULL;
151 opts->num_mnt_opts = 0;
154 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
158 for (i = 0; i < opts->num_mnt_opts; i++)
159 kfree(opts->mnt_opts[i]);
160 kfree(opts->mnt_opts);
161 opts->mnt_opts = NULL;
162 kfree(opts->mnt_opts_flags);
163 opts->mnt_opts_flags = NULL;
164 opts->num_mnt_opts = 0;
168 * struct security_operations - main security structure
170 * Security module identifier.
173 * A string that acts as a unique identifeir for the LSM with max number
174 * of characters = SECURITY_NAME_MAX.
176 * Security hooks for program execution operations.
179 * Save security information in the bprm->security field, typically based
180 * on information about the bprm->file, for later use by the apply_creds
181 * hook. This hook may also optionally check permissions (e.g. for
182 * transitions between security domains).
183 * This hook may be called multiple times during a single execve, e.g. for
184 * interpreters. The hook can tell whether it has already been called by
185 * checking to see if @bprm->security is non-NULL. If so, then the hook
186 * may decide either to retain the security information saved earlier or
188 * @bprm contains the linux_binprm structure.
189 * Return 0 if the hook is successful and permission is granted.
190 * @bprm_check_security:
191 * This hook mediates the point when a search for a binary handler will
192 * begin. It allows a check the @bprm->security value which is set in the
193 * preceding set_creds call. The primary difference from set_creds is
194 * that the argv list and envp list are reliably available in @bprm. This
195 * hook may be called multiple times during a single execve; and in each
196 * pass set_creds is called first.
197 * @bprm contains the linux_binprm structure.
198 * Return 0 if the hook is successful and permission is granted.
199 * @bprm_committing_creds:
200 * Prepare to install the new security attributes of a process being
201 * transformed by an execve operation, based on the old credentials
202 * pointed to by @current->cred and the information set in @bprm->cred by
203 * the bprm_set_creds hook. @bprm points to the linux_binprm structure.
204 * This hook is a good place to perform state changes on the process such
205 * as closing open file descriptors to which access will no longer be
206 * granted when the attributes are changed. This is called immediately
207 * before commit_creds().
208 * @bprm_committed_creds:
209 * Tidy up after the installation of the new security attributes of a
210 * process being transformed by an execve operation. The new credentials
211 * have, by this point, been set to @current->cred. @bprm points to the
212 * linux_binprm structure. This hook is a good place to perform state
213 * changes on the process such as clearing out non-inheritable signal
214 * state. This is called immediately after commit_creds().
216 * Return a boolean value (0 or 1) indicating whether a "secure exec"
217 * is required. The flag is passed in the auxiliary table
218 * on the initial stack to the ELF interpreter to indicate whether libc
219 * should enable secure mode.
220 * @bprm contains the linux_binprm structure.
222 * Security hooks for filesystem operations.
224 * @sb_alloc_security:
225 * Allocate and attach a security structure to the sb->s_security field.
226 * The s_security field is initialized to NULL when the structure is
228 * @sb contains the super_block structure to be modified.
229 * Return 0 if operation was successful.
231 * Deallocate and clear the sb->s_security field.
232 * @sb contains the super_block structure to be modified.
234 * Check permission before obtaining filesystem statistics for the @mnt
236 * @dentry is a handle on the superblock for the filesystem.
237 * Return 0 if permission is granted.
239 * Check permission before an object specified by @dev_name is mounted on
240 * the mount point named by @nd. For an ordinary mount, @dev_name
241 * identifies a device if the file system type requires a device. For a
242 * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a
243 * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
244 * pathname of the object being mounted.
245 * @dev_name contains the name for object being mounted.
246 * @path contains the path for mount point object.
247 * @type contains the filesystem type.
248 * @flags contains the mount flags.
249 * @data contains the filesystem-specific data.
250 * Return 0 if permission is granted.
252 * Allow mount option data to be copied prior to parsing by the filesystem,
253 * so that the security module can extract security-specific mount
254 * options cleanly (a filesystem may modify the data e.g. with strsep()).
255 * This also allows the original mount data to be stripped of security-
256 * specific options to avoid having to make filesystems aware of them.
257 * @type the type of filesystem being mounted.
258 * @orig the original mount data copied from userspace.
259 * @copy copied data which will be passed to the security module.
260 * Returns 0 if the copy was successful.
262 * Check permission before the device with superblock @mnt->sb is mounted
263 * on the mount point named by @nd.
264 * @mnt contains the vfsmount for device being mounted.
265 * @path contains the path for the mount point.
266 * Return 0 if permission is granted.
268 * Check permission before the @mnt file system is unmounted.
269 * @mnt contains the mounted file system.
270 * @flags contains the unmount flags, e.g. MNT_FORCE.
271 * Return 0 if permission is granted.
273 * Close any files in the @mnt mounted filesystem that are held open by
274 * the security module. This hook is called during an umount operation
275 * prior to checking whether the filesystem is still busy.
276 * @mnt contains the mounted filesystem.
278 * Handle a failed umount of the @mnt mounted filesystem, e.g. re-opening
279 * any files that were closed by umount_close. This hook is called during
280 * an umount operation if the umount fails after a call to the
282 * @mnt contains the mounted filesystem.
284 * Update the security module's state when a filesystem is remounted.
285 * This hook is only called if the remount was successful.
286 * @mnt contains the mounted file system.
287 * @flags contains the new filesystem flags.
288 * @data contains the filesystem-specific data.
290 * Update the security module's state when a filesystem is mounted.
291 * This hook is called any time a mount is successfully grafetd to
293 * @mnt contains the mounted filesystem.
294 * @mountpoint contains the path for the mount point.
296 * Check permission before pivoting the root filesystem.
297 * @old_path contains the path for the new location of the current root (put_old).
298 * @new_path contains the path for the new root (new_root).
299 * Return 0 if permission is granted.
300 * @sb_post_pivotroot:
301 * Update module state after a successful pivot.
302 * @old_path contains the path for the old root.
303 * @new_path contains the path for the new root.
305 * Set the security relevant mount options used for a superblock
306 * @sb the superblock to set security mount options for
307 * @opts binary data structure containing all lsm mount data
308 * @sb_clone_mnt_opts:
309 * Copy all security options from a given superblock to another
310 * @oldsb old superblock which contain information to clone
311 * @newsb new superblock which needs filled in
312 * @sb_parse_opts_str:
313 * Parse a string of security data filling in the opts structure
314 * @options string containing all mount options known by the LSM
315 * @opts binary data structure usable by the LSM
317 * Security hooks for inode operations.
319 * @inode_alloc_security:
320 * Allocate and attach a security structure to @inode->i_security. The
321 * i_security field is initialized to NULL when the inode structure is
323 * @inode contains the inode structure.
324 * Return 0 if operation was successful.
325 * @inode_free_security:
326 * @inode contains the inode structure.
327 * Deallocate the inode security structure and set @inode->i_security to
329 * @inode_init_security:
330 * Obtain the security attribute name suffix and value to set on a newly
331 * created inode and set up the incore security field for the new inode.
332 * This hook is called by the fs code as part of the inode creation
333 * transaction and provides for atomic labeling of the inode, unlike
334 * the post_create/mkdir/... hooks called by the VFS. The hook function
335 * is expected to allocate the name and value via kmalloc, with the caller
336 * being responsible for calling kfree after using them.
337 * If the security module does not use security attributes or does
338 * not wish to put a security attribute on this particular inode,
339 * then it should return -EOPNOTSUPP to skip this processing.
340 * @inode contains the inode structure of the newly created inode.
341 * @dir contains the inode structure of the parent directory.
342 * @name will be set to the allocated name suffix (e.g. selinux).
343 * @value will be set to the allocated attribute value.
344 * @len will be set to the length of the value.
345 * Returns 0 if @name and @value have been successfully set,
346 * -EOPNOTSUPP if no security attribute is needed, or
347 * -ENOMEM on memory allocation failure.
349 * Check permission to create a regular file.
350 * @dir contains inode structure of the parent of the new file.
351 * @dentry contains the dentry structure for the file to be created.
352 * @mode contains the file mode of the file to be created.
353 * Return 0 if permission is granted.
355 * Check permission before creating a new hard link to a file.
356 * @old_dentry contains the dentry structure for an existing link to the file.
357 * @dir contains the inode structure of the parent directory of the new link.
358 * @new_dentry contains the dentry structure for the new link.
359 * Return 0 if permission is granted.
361 * Check permission before creating a new hard link to a file.
362 * @old_dentry contains the dentry structure for an existing link
364 * @new_dir contains the path structure of the parent directory of
366 * @new_dentry contains the dentry structure for the new link.
367 * Return 0 if permission is granted.
369 * Check the permission to remove a hard link to a file.
370 * @dir contains the inode structure of parent directory of the file.
371 * @dentry contains the dentry structure for file to be unlinked.
372 * Return 0 if permission is granted.
374 * Check the permission to remove a hard link to a file.
375 * @dir contains the path structure of parent directory of the file.
376 * @dentry contains the dentry structure for file to be unlinked.
377 * Return 0 if permission is granted.
379 * Check the permission to create a symbolic link to a file.
380 * @dir contains the inode structure of parent directory of the symbolic link.
381 * @dentry contains the dentry structure of the symbolic link.
382 * @old_name contains the pathname of file.
383 * Return 0 if permission is granted.
385 * Check the permission to create a symbolic link to a file.
386 * @dir contains the path structure of parent directory of
388 * @dentry contains the dentry structure of the symbolic link.
389 * @old_name contains the pathname of file.
390 * Return 0 if permission is granted.
392 * Check permissions to create a new directory in the existing directory
393 * associated with inode strcture @dir.
394 * @dir containst the inode structure of parent of the directory to be created.
395 * @dentry contains the dentry structure of new directory.
396 * @mode contains the mode of new directory.
397 * Return 0 if permission is granted.
399 * Check permissions to create a new directory in the existing directory
400 * associated with path strcture @path.
401 * @dir containst the path structure of parent of the directory
403 * @dentry contains the dentry structure of new directory.
404 * @mode contains the mode of new directory.
405 * Return 0 if permission is granted.
407 * Check the permission to remove a directory.
408 * @dir contains the inode structure of parent of the directory to be removed.
409 * @dentry contains the dentry structure of directory to be removed.
410 * Return 0 if permission is granted.
412 * Check the permission to remove a directory.
413 * @dir contains the path structure of parent of the directory to be
415 * @dentry contains the dentry structure of directory to be removed.
416 * Return 0 if permission is granted.
418 * Check permissions when creating a special file (or a socket or a fifo
419 * file created via the mknod system call). Note that if mknod operation
420 * is being done for a regular file, then the create hook will be called
422 * @dir contains the inode structure of parent of the new file.
423 * @dentry contains the dentry structure of the new file.
424 * @mode contains the mode of the new file.
425 * @dev contains the device number.
426 * Return 0 if permission is granted.
428 * Check permissions when creating a file. Note that this hook is called
429 * even if mknod operation is being done for a regular file.
430 * @dir contains the path structure of parent of the new file.
431 * @dentry contains the dentry structure of the new file.
432 * @mode contains the mode of the new file.
433 * @dev contains the undecoded device number. Use new_decode_dev() to get
434 * the decoded device number.
435 * Return 0 if permission is granted.
437 * Check for permission to rename a file or directory.
438 * @old_dir contains the inode structure for parent of the old link.
439 * @old_dentry contains the dentry structure of the old link.
440 * @new_dir contains the inode structure for parent of the new link.
441 * @new_dentry contains the dentry structure of the new link.
442 * Return 0 if permission is granted.
444 * Check for permission to rename a file or directory.
445 * @old_dir contains the path structure for parent of the old link.
446 * @old_dentry contains the dentry structure of the old link.
447 * @new_dir contains the path structure for parent of the new link.
448 * @new_dentry contains the dentry structure of the new link.
449 * Return 0 if permission is granted.
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 * @nd contains the nameidata (may be NULL).
469 * Return 0 if permission is granted.
471 * Check permission before setting file attributes. Note that the kernel
472 * call to notify_change is performed from several locations, whenever
473 * file attributes change (such as when a file is truncated, chown/chmod
474 * operations, transferring disk quotas, etc).
475 * @dentry contains the dentry structure for the file.
476 * @attr is the iattr structure containing the new file attributes.
477 * Return 0 if permission is granted.
479 * Check permission before truncating a file.
480 * @path contains the path structure for the file.
481 * @length is the new length of the file.
482 * @time_attrs is the flags passed to do_truncate().
483 * Return 0 if permission is granted.
485 * Check permission before obtaining file attributes.
486 * @mnt is the vfsmount where the dentry was looked up
487 * @dentry contains the dentry structure for the file.
488 * Return 0 if permission is granted.
490 * @inode contains the inode structure for deleted inode.
491 * This hook is called when a deleted inode is released (i.e. an inode
492 * with no hard links has its use count drop to zero). A security module
493 * can use this hook to release any persistent label associated with the
496 * Check permission before setting the extended attributes
497 * @value identified by @name for @dentry.
498 * Return 0 if permission is granted.
499 * @inode_post_setxattr:
500 * Update inode security field after successful setxattr operation.
501 * @value identified by @name for @dentry.
503 * Check permission before obtaining the extended attributes
504 * identified by @name for @dentry.
505 * Return 0 if permission is granted.
507 * Check permission before obtaining the list of extended attribute
509 * Return 0 if permission is granted.
510 * @inode_removexattr:
511 * Check permission before removing the extended attribute
512 * identified by @name for @dentry.
513 * Return 0 if permission is granted.
514 * @inode_getsecurity:
515 * Retrieve a copy of the extended attribute representation of the
516 * security label associated with @name for @inode via @buffer. Note that
517 * @name is the remainder of the attribute name after the security prefix
518 * has been removed. @alloc is used to specify of the call should return a
519 * value via the buffer or just the value length Return size of buffer on
521 * @inode_setsecurity:
522 * Set the security label associated with @name for @inode from the
523 * extended attribute value @value. @size indicates the size of the
524 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
525 * Note that @name is the remainder of the attribute name after the
526 * security. prefix has been removed.
527 * Return 0 on success.
528 * @inode_listsecurity:
529 * Copy the extended attribute names for the security labels
530 * associated with @inode into @buffer. The maximum size of @buffer
531 * is specified by @buffer_size. @buffer may be NULL to request
532 * the size of the buffer required.
533 * Returns number of bytes used/required on success.
534 * @inode_need_killpriv:
535 * Called when an inode has been changed.
536 * @dentry is the dentry being changed.
537 * Return <0 on error to abort the inode change operation.
538 * Return 0 if inode_killpriv does not need to be called.
539 * Return >0 if inode_killpriv does need to be called.
541 * The setuid bit is being removed. Remove similar security labels.
542 * Called with the dentry->d_inode->i_mutex held.
543 * @dentry is the dentry being changed.
544 * Return 0 on success. If error is returned, then the operation
545 * causing setuid bit removal is failed.
547 * Get the secid associated with the node.
548 * @inode contains a pointer to the inode.
549 * @secid contains a pointer to the location where result will be saved.
550 * In case of failure, @secid will be set to zero.
552 * Security hooks for file operations
555 * Check file permissions before accessing an open file. This hook is
556 * called by various operations that read or write files. A security
557 * module can use this hook to perform additional checking on these
558 * operations, e.g. to revalidate permissions on use to support privilege
559 * bracketing or policy changes. Notice that this hook is used when the
560 * actual read/write operations are performed, whereas the
561 * inode_security_ops hook is called when a file is opened (as well as
562 * many other operations).
563 * Caveat: Although this hook can be used to revalidate permissions for
564 * various system call operations that read or write files, it does not
565 * address the revalidation of permissions for memory-mapped files.
566 * Security modules must handle this separately if they need such
568 * @file contains the file structure being accessed.
569 * @mask contains the requested permissions.
570 * Return 0 if permission is granted.
571 * @file_alloc_security:
572 * Allocate and attach a security structure to the file->f_security field.
573 * The security field is initialized to NULL when the structure is first
575 * @file contains the file structure to secure.
576 * Return 0 if the hook is successful and permission is granted.
577 * @file_free_security:
578 * Deallocate and free any security structures stored in file->f_security.
579 * @file contains the file structure being modified.
581 * @file contains the file structure.
582 * @cmd contains the operation to perform.
583 * @arg contains the operational arguments.
584 * Check permission for an ioctl operation on @file. Note that @arg can
585 * sometimes represents a user space pointer; in other cases, it may be a
586 * simple integer value. When @arg represents a user space pointer, it
587 * should never be used by the security module.
588 * Return 0 if permission is granted.
590 * Check permissions for a mmap operation. The @file may be NULL, e.g.
591 * if mapping anonymous memory.
592 * @file contains the file structure for file to map (may be NULL).
593 * @reqprot contains the protection requested by the application.
594 * @prot contains the protection that will be applied by the kernel.
595 * @flags contains the operational flags.
596 * Return 0 if permission is granted.
598 * Check permissions before changing memory access permissions.
599 * @vma contains the memory region to modify.
600 * @reqprot contains the protection requested by the application.
601 * @prot contains the protection that will be applied by the kernel.
602 * Return 0 if permission is granted.
604 * Check permission before performing file locking operations.
605 * Note: this hook mediates both flock and fcntl style locks.
606 * @file contains the file structure.
607 * @cmd contains the posix-translated lock operation to perform
608 * (e.g. F_RDLCK, F_WRLCK).
609 * Return 0 if permission is granted.
611 * Check permission before allowing the file operation specified by @cmd
612 * from being performed on the file @file. Note that @arg can sometimes
613 * represents a user space pointer; in other cases, it may be a simple
614 * integer value. When @arg represents a user space pointer, it should
615 * never be used by the security module.
616 * @file contains the file structure.
617 * @cmd contains the operation to be performed.
618 * @arg contains the operational arguments.
619 * Return 0 if permission is granted.
621 * Save owner security information (typically from current->security) in
622 * file->f_security for later use by the send_sigiotask hook.
623 * @file contains the file structure to update.
624 * Return 0 on success.
625 * @file_send_sigiotask:
626 * Check permission for the file owner @fown to send SIGIO or SIGURG to the
627 * process @tsk. Note that this hook is sometimes called from interrupt.
628 * Note that the fown_struct, @fown, is never outside the context of a
629 * struct file, so the file structure (and associated security information)
630 * can always be obtained:
631 * container_of(fown, struct file, f_owner)
632 * @tsk contains the structure of task receiving signal.
633 * @fown contains the file owner information.
634 * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
635 * Return 0 if permission is granted.
637 * This hook allows security modules to control the ability of a process
638 * to receive an open file descriptor via socket IPC.
639 * @file contains the file structure being received.
640 * Return 0 if permission is granted.
642 * Security hook for dentry
645 * Save open-time permission checking state for later use upon
646 * file_permission, and recheck access if anything has changed
647 * since inode_permission.
649 * Security hooks for task operations.
652 * Check permission before creating a child process. See the clone(2)
653 * manual page for definitions of the @clone_flags.
654 * @clone_flags contains the flags indicating what should be shared.
655 * Return 0 if permission is granted.
657 * @cred points to the credentials.
658 * Deallocate and clear the cred->security field in a set of credentials.
660 * @new points to the new credentials.
661 * @old points to the original credentials.
662 * @gfp indicates the atomicity of any memory allocations.
663 * Prepare a new set of credentials by copying the data from the old set.
665 * @new points to the new credentials.
666 * @old points to the original credentials.
667 * Install a new set of credentials.
669 * Set the credentials for a kernel service to act as (subjective context).
670 * @new points to the credentials to be modified.
671 * @secid specifies the security ID to be set
672 * The current task must be the one that nominated @secid.
673 * Return 0 if successful.
674 * @kernel_create_files_as:
675 * Set the file creation context in a set of credentials to be the same as
676 * the objective context of the specified inode.
677 * @new points to the credentials to be modified.
678 * @inode points to the inode to use as a reference.
679 * The current task must be the one that nominated @inode.
680 * Return 0 if successful.
681 * @kernel_module_request:
682 * Ability to trigger the kernel to automatically upcall to userspace for
683 * userspace to load a kernel module with the given name.
685 * Check permission before setting one or more of the user identity
686 * attributes of the current process. The @flags parameter indicates
687 * which of the set*uid system calls invoked this hook and how to
688 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
689 * definitions at the beginning of this file for the @flags values and
691 * @id0 contains a uid.
692 * @id1 contains a uid.
693 * @id2 contains a uid.
694 * @flags contains one of the LSM_SETID_* values.
695 * Return 0 if permission is granted.
697 * Update the module's state after setting one or more of the user
698 * identity attributes of the current process. The @flags parameter
699 * indicates which of the set*uid system calls invoked this hook. If
700 * @new is the set of credentials that will be installed. Modifications
701 * should be made to this rather than to @current->cred.
702 * @old is the set of credentials that are being replaces
703 * @flags contains one of the LSM_SETID_* values.
704 * Return 0 on success.
706 * Check permission before setting one or more of the group identity
707 * attributes of the current process. The @flags parameter indicates
708 * which of the set*gid system calls invoked this hook and how to
709 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
710 * definitions at the beginning of this file for the @flags values and
712 * @id0 contains a gid.
713 * @id1 contains a gid.
714 * @id2 contains a gid.
715 * @flags contains one of the LSM_SETID_* values.
716 * Return 0 if permission is granted.
718 * Check permission before setting the process group identifier of the
719 * process @p to @pgid.
720 * @p contains the task_struct for process being modified.
721 * @pgid contains the new pgid.
722 * Return 0 if permission is granted.
724 * Check permission before getting the process group identifier of the
726 * @p contains the task_struct for the process.
727 * Return 0 if permission is granted.
729 * Check permission before getting the session identifier of the process
731 * @p contains the task_struct for the process.
732 * Return 0 if permission is granted.
734 * Retrieve the security identifier of the process @p.
735 * @p contains the task_struct for the process and place is into @secid.
736 * In case of failure, @secid will be set to zero.
739 * Check permission before setting the supplementary group set of the
741 * @group_info contains the new group information.
742 * Return 0 if permission is granted.
744 * Check permission before setting the nice value of @p to @nice.
745 * @p contains the task_struct of process.
746 * @nice contains the new nice value.
747 * Return 0 if permission is granted.
749 * Check permission before setting the ioprio value of @p to @ioprio.
750 * @p contains the task_struct of process.
751 * @ioprio contains the new ioprio value
752 * Return 0 if permission is granted.
754 * Check permission before getting the ioprio value of @p.
755 * @p contains the task_struct of process.
756 * Return 0 if permission is granted.
758 * Check permission before setting the resource limits of the current
759 * process for @resource to @new_rlim. The old resource limit values can
760 * be examined by dereferencing (current->signal->rlim + resource).
761 * @resource contains the resource whose limit is being set.
762 * @new_rlim contains the new limits for @resource.
763 * Return 0 if permission is granted.
764 * @task_setscheduler:
765 * Check permission before setting scheduling policy and/or parameters of
766 * process @p based on @policy and @lp.
767 * @p contains the task_struct for process.
768 * @policy contains the scheduling policy.
769 * @lp contains the scheduling parameters.
770 * Return 0 if permission is granted.
771 * @task_getscheduler:
772 * Check permission before obtaining scheduling information for process
774 * @p contains the task_struct for process.
775 * Return 0 if permission is granted.
777 * Check permission before moving memory owned by process @p.
778 * @p contains the task_struct for process.
779 * Return 0 if permission is granted.
781 * Check permission before sending signal @sig to @p. @info can be NULL,
782 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
783 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
784 * from the kernel and should typically be permitted.
785 * SIGIO signals are handled separately by the send_sigiotask hook in
787 * @p contains the task_struct for process.
788 * @info contains the signal information.
789 * @sig contains the signal value.
790 * @secid contains the sid of the process where the signal originated
791 * Return 0 if permission is granted.
793 * Check permission before allowing a process to reap a child process @p
794 * and collect its status information.
795 * @p contains the task_struct for process.
796 * Return 0 if permission is granted.
798 * Check permission before performing a process control operation on the
800 * @option contains the operation.
801 * @arg2 contains a argument.
802 * @arg3 contains a argument.
803 * @arg4 contains a argument.
804 * @arg5 contains a argument.
805 * Return -ENOSYS if no-one wanted to handle this op, any other value to
806 * cause prctl() to return immediately with that value.
808 * Set the security attributes for an inode based on an associated task's
809 * security attributes, e.g. for /proc/pid inodes.
810 * @p contains the task_struct for the task.
811 * @inode contains the inode structure for the inode.
813 * Security hooks for Netlink messaging.
816 * Save security information for a netlink message so that permission
817 * checking can be performed when the message is processed. The security
818 * information can be saved using the eff_cap field of the
819 * netlink_skb_parms structure. Also may be used to provide fine
820 * grained control over message transmission.
821 * @sk associated sock of task sending the message.,
822 * @skb contains the sk_buff structure for the netlink message.
823 * Return 0 if the information was successfully saved and message
824 * is allowed to be transmitted.
826 * Check permission before processing the received netlink message in
828 * @skb contains the sk_buff structure for the netlink message.
829 * @cap indicates the capability required
830 * Return 0 if permission is granted.
832 * Security hooks for Unix domain networking.
834 * @unix_stream_connect:
835 * Check permissions before establishing a Unix domain stream connection
836 * between @sock and @other.
837 * @sock contains the socket structure.
838 * @other contains the peer socket structure.
839 * Return 0 if permission is granted.
841 * Check permissions before connecting or sending datagrams from @sock to
843 * @sock contains the socket structure.
844 * @sock contains the peer socket structure.
845 * Return 0 if permission is granted.
847 * The @unix_stream_connect and @unix_may_send hooks were necessary because
848 * Linux provides an alternative to the conventional file name space for Unix
849 * domain sockets. Whereas binding and connecting to sockets in the file name
850 * space is mediated by the typical file permissions (and caught by the mknod
851 * and permission hooks in inode_security_ops), binding and connecting to
852 * sockets in the abstract name space is completely unmediated. Sufficient
853 * control of Unix domain sockets in the abstract name space isn't possible
854 * using only the socket layer hooks, since we need to know the actual target
855 * socket, which is not looked up until we are inside the af_unix code.
857 * Security hooks for socket operations.
860 * Check permissions prior to creating a new socket.
861 * @family contains the requested protocol family.
862 * @type contains the requested communications type.
863 * @protocol contains the requested protocol.
864 * @kern set to 1 if a kernel socket.
865 * Return 0 if permission is granted.
866 * @socket_post_create:
867 * This hook allows a module to update or allocate a per-socket security
868 * structure. Note that the security field was not added directly to the
869 * socket structure, but rather, the socket security information is stored
870 * in the associated inode. Typically, the inode alloc_security hook will
871 * allocate and and attach security information to
872 * sock->inode->i_security. This hook may be used to update the
873 * sock->inode->i_security field with additional information that wasn't
874 * available when the inode was allocated.
875 * @sock contains the newly created socket structure.
876 * @family contains the requested protocol family.
877 * @type contains the requested communications type.
878 * @protocol contains the requested protocol.
879 * @kern set to 1 if a kernel socket.
881 * Check permission before socket protocol layer bind operation is
882 * performed and the socket @sock is bound to the address specified in the
883 * @address parameter.
884 * @sock contains the socket structure.
885 * @address contains the address to bind to.
886 * @addrlen contains the length of address.
887 * Return 0 if permission is granted.
889 * Check permission before socket protocol layer connect operation
890 * attempts to connect socket @sock to a remote address, @address.
891 * @sock contains the socket structure.
892 * @address contains the address of remote endpoint.
893 * @addrlen contains the length of address.
894 * Return 0 if permission is granted.
896 * Check permission before socket protocol layer listen operation.
897 * @sock contains the socket structure.
898 * @backlog contains the maximum length for the pending connection queue.
899 * Return 0 if permission is granted.
901 * Check permission before accepting a new connection. Note that the new
902 * socket, @newsock, has been created and some information copied to it,
903 * but the accept operation has not actually been performed.
904 * @sock contains the listening socket structure.
905 * @newsock contains the newly created server socket for connection.
906 * Return 0 if permission is granted.
908 * Check permission before transmitting a message to another socket.
909 * @sock contains the socket structure.
910 * @msg contains the message to be transmitted.
911 * @size contains the size of message.
912 * Return 0 if permission is granted.
914 * Check permission before receiving a message from a socket.
915 * @sock contains the socket structure.
916 * @msg contains the message structure.
917 * @size contains the size of message structure.
918 * @flags contains the operational flags.
919 * Return 0 if permission is granted.
920 * @socket_getsockname:
921 * Check permission before the local address (name) of the socket object
922 * @sock is retrieved.
923 * @sock contains the socket structure.
924 * Return 0 if permission is granted.
925 * @socket_getpeername:
926 * Check permission before the remote address (name) of a socket object
927 * @sock is retrieved.
928 * @sock contains the socket structure.
929 * Return 0 if permission is granted.
930 * @socket_getsockopt:
931 * Check permissions before retrieving the options associated with socket
933 * @sock contains the socket structure.
934 * @level contains the protocol level to retrieve option from.
935 * @optname contains the name of option to retrieve.
936 * Return 0 if permission is granted.
937 * @socket_setsockopt:
938 * Check permissions before setting the options associated with socket
940 * @sock contains the socket structure.
941 * @level contains the protocol level to set options for.
942 * @optname contains the name of the option to set.
943 * Return 0 if permission is granted.
945 * Checks permission before all or part of a connection on the socket
946 * @sock is shut down.
947 * @sock contains the socket structure.
948 * @how contains the flag indicating how future sends and receives are handled.
949 * Return 0 if permission is granted.
950 * @socket_sock_rcv_skb:
951 * Check permissions on incoming network packets. This hook is distinct
952 * from Netfilter's IP input hooks since it is the first time that the
953 * incoming sk_buff @skb has been associated with a particular socket, @sk.
954 * @sk contains the sock (not socket) associated with the incoming sk_buff.
955 * @skb contains the incoming network data.
956 * @socket_getpeersec_stream:
957 * This hook allows the security module to provide peer socket security
958 * state for unix or connected tcp sockets to userspace via getsockopt
959 * SO_GETPEERSEC. For tcp sockets this can be meaningful if the
960 * socket is associated with an ipsec SA.
961 * @sock is the local socket.
962 * @optval userspace memory where the security state is to be copied.
963 * @optlen userspace int where the module should copy the actual length
964 * of the security state.
965 * @len as input is the maximum length to copy to userspace provided
967 * Return 0 if all is well, otherwise, typical getsockopt return
969 * @socket_getpeersec_dgram:
970 * This hook allows the security module to provide peer socket security
971 * state for udp sockets on a per-packet basis to userspace via
972 * getsockopt SO_GETPEERSEC. The application must first have indicated
973 * the IP_PASSSEC option via getsockopt. It can then retrieve the
974 * security state returned by this hook for a packet via the SCM_SECURITY
975 * ancillary message type.
976 * @skb is the skbuff for the packet being queried
977 * @secdata is a pointer to a buffer in which to copy the security data
978 * @seclen is the maximum length for @secdata
979 * Return 0 on success, error on failure.
980 * @sk_alloc_security:
981 * Allocate and attach a security structure to the sk->sk_security field,
982 * which is used to copy security attributes between local stream sockets.
984 * Deallocate security structure.
985 * @sk_clone_security:
986 * Clone/copy security structure.
988 * Retrieve the LSM-specific secid for the sock to enable caching of network
991 * Sets the socket's isec sid to the sock's sid.
992 * @inet_conn_request:
993 * Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
995 * Sets the new child socket's sid to the openreq sid.
996 * @inet_conn_established:
997 * Sets the connection's peersid to the secmark on skb.
998 * @req_classify_flow:
999 * Sets the flow's sid to the openreq sid.
1001 * Security hooks for XFRM operations.
1003 * @xfrm_policy_alloc_security:
1004 * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
1005 * Database used by the XFRM system.
1006 * @sec_ctx contains the security context information being provided by
1007 * the user-level policy update program (e.g., setkey).
1008 * Allocate a security structure to the xp->security field; the security
1009 * field is initialized to NULL when the xfrm_policy is allocated.
1010 * Return 0 if operation was successful (memory to allocate, legal context)
1011 * @xfrm_policy_clone_security:
1012 * @old_ctx contains an existing xfrm_sec_ctx.
1013 * @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
1014 * Allocate a security structure in new_ctxp that contains the
1015 * information from the old_ctx structure.
1016 * Return 0 if operation was successful (memory to allocate).
1017 * @xfrm_policy_free_security:
1018 * @ctx contains the xfrm_sec_ctx
1019 * Deallocate xp->security.
1020 * @xfrm_policy_delete_security:
1021 * @ctx contains the xfrm_sec_ctx.
1022 * Authorize deletion of xp->security.
1023 * @xfrm_state_alloc_security:
1024 * @x contains the xfrm_state being added to the Security Association
1025 * Database by the XFRM system.
1026 * @sec_ctx contains the security context information being provided by
1027 * the user-level SA generation program (e.g., setkey or racoon).
1028 * @secid contains the secid from which to take the mls portion of the context.
1029 * Allocate a security structure to the x->security field; the security
1030 * field is initialized to NULL when the xfrm_state is allocated. Set the
1031 * context to correspond to either sec_ctx or polsec, with the mls portion
1032 * taken from secid in the latter case.
1033 * Return 0 if operation was successful (memory to allocate, legal context).
1034 * @xfrm_state_free_security:
1035 * @x contains the xfrm_state.
1036 * Deallocate x->security.
1037 * @xfrm_state_delete_security:
1038 * @x contains the xfrm_state.
1039 * Authorize deletion of x->security.
1040 * @xfrm_policy_lookup:
1041 * @ctx contains the xfrm_sec_ctx for which the access control is being
1043 * @fl_secid contains the flow security label that is used to authorize
1044 * access to the policy xp.
1045 * @dir contains the direction of the flow (input or output).
1046 * Check permission when a flow selects a xfrm_policy for processing
1047 * XFRMs on a packet. The hook is called when selecting either a
1048 * per-socket policy or a generic xfrm policy.
1049 * Return 0 if permission is granted, -ESRCH otherwise, or -errno
1051 * @xfrm_state_pol_flow_match:
1052 * @x contains the state to match.
1053 * @xp contains the policy to check for a match.
1054 * @fl contains the flow to check for a match.
1055 * Return 1 if there is a match.
1056 * @xfrm_decode_session:
1057 * @skb points to skb to decode.
1058 * @secid points to the flow key secid to set.
1059 * @ckall says if all xfrms used should be checked for same secid.
1060 * Return 0 if ckall is zero or all xfrms used have the same secid.
1062 * Security hooks affecting all Key Management operations
1065 * Permit allocation of a key and assign security data. Note that key does
1066 * not have a serial number assigned at this point.
1067 * @key points to the key.
1068 * @flags is the allocation flags
1069 * Return 0 if permission is granted, -ve error otherwise.
1071 * Notification of destruction; free security data.
1072 * @key points to the key.
1075 * See whether a specific operational right is granted to a process on a
1077 * @key_ref refers to the key (key pointer + possession attribute bit).
1078 * @cred points to the credentials to provide the context against which to
1079 * evaluate the security data on the key.
1080 * @perm describes the combination of permissions required of this key.
1081 * Return 1 if permission granted, 0 if permission denied and -ve it the
1082 * normal permissions model should be effected.
1084 * Get a textual representation of the security context attached to a key
1085 * for the purposes of honouring KEYCTL_GETSECURITY. This function
1086 * allocates the storage for the NUL-terminated string and the caller
1088 * @key points to the key to be queried.
1089 * @_buffer points to a pointer that should be set to point to the
1090 * resulting string (if no label or an error occurs).
1091 * Return the length of the string (including terminating NUL) or -ve if
1093 * May also return 0 (and a NULL buffer pointer) if there is no label.
1095 * Security hooks affecting all System V IPC operations.
1098 * Check permissions for access to IPC
1099 * @ipcp contains the kernel IPC permission structure
1100 * @flag contains the desired (requested) permission set
1101 * Return 0 if permission is granted.
1103 * Get the secid associated with the ipc object.
1104 * @ipcp contains the kernel IPC permission structure.
1105 * @secid contains a pointer to the location where result will be saved.
1106 * In case of failure, @secid will be set to zero.
1108 * Security hooks for individual messages held in System V IPC message queues
1109 * @msg_msg_alloc_security:
1110 * Allocate and attach a security structure to the msg->security field.
1111 * The security field is initialized to NULL when the structure is first
1113 * @msg contains the message structure to be modified.
1114 * Return 0 if operation was successful and permission is granted.
1115 * @msg_msg_free_security:
1116 * Deallocate the security structure for this message.
1117 * @msg contains the message structure to be modified.
1119 * Security hooks for System V IPC Message Queues
1121 * @msg_queue_alloc_security:
1122 * Allocate and attach a security structure to the
1123 * msq->q_perm.security field. The security field is initialized to
1124 * NULL when the structure is first created.
1125 * @msq contains the message queue structure to be modified.
1126 * Return 0 if operation was successful and permission is granted.
1127 * @msg_queue_free_security:
1128 * Deallocate security structure for this message queue.
1129 * @msq contains the message queue structure to be modified.
1130 * @msg_queue_associate:
1131 * Check permission when a message queue is requested through the
1132 * msgget system call. This hook is only called when returning the
1133 * message queue identifier for an existing message queue, not when a
1134 * new message queue is created.
1135 * @msq contains the message queue to act upon.
1136 * @msqflg contains the operation control flags.
1137 * Return 0 if permission is granted.
1138 * @msg_queue_msgctl:
1139 * Check permission when a message control operation specified by @cmd
1140 * is to be performed on the message queue @msq.
1141 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
1142 * @msq contains the message queue to act upon. May be NULL.
1143 * @cmd contains the operation to be performed.
1144 * Return 0 if permission is granted.
1145 * @msg_queue_msgsnd:
1146 * Check permission before a message, @msg, is enqueued on the message
1148 * @msq contains the message queue to send message to.
1149 * @msg contains the message to be enqueued.
1150 * @msqflg contains operational flags.
1151 * Return 0 if permission is granted.
1152 * @msg_queue_msgrcv:
1153 * Check permission before a message, @msg, is removed from the message
1154 * queue, @msq. The @target task structure contains a pointer to the
1155 * process that will be receiving the message (not equal to the current
1156 * process when inline receives are being performed).
1157 * @msq contains the message queue to retrieve message from.
1158 * @msg contains the message destination.
1159 * @target contains the task structure for recipient process.
1160 * @type contains the type of message requested.
1161 * @mode contains the operational flags.
1162 * Return 0 if permission is granted.
1164 * Security hooks for System V Shared Memory Segments
1166 * @shm_alloc_security:
1167 * Allocate and attach a security structure to the shp->shm_perm.security
1168 * field. The security field is initialized to NULL when the structure is
1170 * @shp contains the shared memory structure to be modified.
1171 * Return 0 if operation was successful and permission is granted.
1172 * @shm_free_security:
1173 * Deallocate the security struct for this memory segment.
1174 * @shp contains the shared memory structure to be modified.
1176 * Check permission when a shared memory region is requested through the
1177 * shmget system call. This hook is only called when returning the shared
1178 * memory region identifier for an existing region, not when a new shared
1179 * memory region is created.
1180 * @shp contains the shared memory structure to be modified.
1181 * @shmflg contains the operation control flags.
1182 * Return 0 if permission is granted.
1184 * Check permission when a shared memory control operation specified by
1185 * @cmd is to be performed on the shared memory region @shp.
1186 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1187 * @shp contains shared memory structure to be modified.
1188 * @cmd contains the operation to be performed.
1189 * Return 0 if permission is granted.
1191 * Check permissions prior to allowing the shmat system call to attach the
1192 * shared memory segment @shp to the data segment of the calling process.
1193 * The attaching address is specified by @shmaddr.
1194 * @shp contains the shared memory structure to be modified.
1195 * @shmaddr contains the address to attach memory region to.
1196 * @shmflg contains the operational flags.
1197 * Return 0 if permission is granted.
1199 * Security hooks for System V Semaphores
1201 * @sem_alloc_security:
1202 * Allocate and attach a security structure to the sma->sem_perm.security
1203 * field. The security field is initialized to NULL when the structure is
1205 * @sma contains the semaphore structure
1206 * Return 0 if operation was successful and permission is granted.
1207 * @sem_free_security:
1208 * deallocate security struct for this semaphore
1209 * @sma contains the semaphore structure.
1211 * Check permission when a semaphore is requested through the semget
1212 * system call. This hook is only called when returning the semaphore
1213 * identifier for an existing semaphore, not when a new one must be
1215 * @sma contains the semaphore structure.
1216 * @semflg contains the operation control flags.
1217 * Return 0 if permission is granted.
1219 * Check permission when a semaphore operation specified by @cmd is to be
1220 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
1221 * IPC_INFO or SEM_INFO.
1222 * @sma contains the semaphore structure. May be NULL.
1223 * @cmd contains the operation to be performed.
1224 * Return 0 if permission is granted.
1226 * Check permissions before performing operations on members of the
1227 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1229 * @sma contains the semaphore structure.
1230 * @sops contains the operations to perform.
1231 * @nsops contains the number of operations to perform.
1232 * @alter contains the flag indicating whether changes are to be made.
1233 * Return 0 if permission is granted.
1235 * @ptrace_access_check:
1236 * Check permission before allowing the current process to trace the
1238 * Security modules may also want to perform a process tracing check
1239 * during an execve in the set_security or apply_creds hooks of
1240 * tracing check during an execve in the bprm_set_creds hook of
1241 * binprm_security_ops if the process is being traced and its security
1242 * attributes would be changed by the execve.
1243 * @child contains the task_struct structure for the target process.
1244 * @mode contains the PTRACE_MODE flags indicating the form of access.
1245 * Return 0 if permission is granted.
1247 * Check that the @parent process has sufficient permission to trace the
1248 * current process before allowing the current process to present itself
1249 * to the @parent process for tracing.
1250 * The parent process will still have to undergo the ptrace_access_check
1251 * checks before it is allowed to trace this one.
1252 * @parent contains the task_struct structure for debugger process.
1253 * Return 0 if permission is granted.
1255 * Get the @effective, @inheritable, and @permitted capability sets for
1256 * the @target process. The hook may also perform permission checking to
1257 * determine if the current process is allowed to see the capability sets
1258 * of the @target process.
1259 * @target contains the task_struct structure for target process.
1260 * @effective contains the effective capability set.
1261 * @inheritable contains the inheritable capability set.
1262 * @permitted contains the permitted capability set.
1263 * Return 0 if the capability sets were successfully obtained.
1265 * Set the @effective, @inheritable, and @permitted capability sets for
1266 * the current process.
1267 * @new contains the new credentials structure for target process.
1268 * @old contains the current credentials structure for target process.
1269 * @effective contains the effective capability set.
1270 * @inheritable contains the inheritable capability set.
1271 * @permitted contains the permitted capability set.
1272 * Return 0 and update @new if permission is granted.
1274 * Check whether the @tsk process has the @cap capability in the indicated
1276 * @tsk contains the task_struct for the process.
1277 * @cred contains the credentials to use.
1278 * @cap contains the capability <include/linux/capability.h>.
1279 * @audit: Whether to write an audit message or not
1280 * Return 0 if the capability is granted for @tsk.
1282 * Check permission before enabling or disabling process accounting. If
1283 * accounting is being enabled, then @file refers to the open file used to
1284 * store accounting records. If accounting is being disabled, then @file
1286 * @file contains the file structure for the accounting file (may be NULL).
1287 * Return 0 if permission is granted.
1289 * Check permission before accessing the @table sysctl variable in the
1290 * manner specified by @op.
1291 * @table contains the ctl_table structure for the sysctl variable.
1292 * @op contains the operation (001 = search, 002 = write, 004 = read).
1293 * Return 0 if permission is granted.
1295 * Check permission before accessing the kernel message ring or changing
1296 * logging to the console.
1297 * See the syslog(2) manual page for an explanation of the @type values.
1298 * @type contains the type of action.
1299 * Return 0 if permission is granted.
1301 * Check permission to change the system time.
1302 * struct timespec and timezone are defined in include/linux/time.h
1303 * @ts contains new time
1304 * @tz contains new timezone
1305 * Return 0 if permission is granted.
1306 * @vm_enough_memory:
1307 * Check permissions for allocating a new virtual mapping.
1308 * @mm contains the mm struct it is being added to.
1309 * @pages contains the number of pages.
1310 * Return 0 if permission is granted.
1313 * Convert secid to security context.
1314 * @secid contains the security ID.
1315 * @secdata contains the pointer that stores the converted security context.
1317 * Convert security context to secid.
1318 * @secid contains the pointer to the generated security ID.
1319 * @secdata contains the security context.
1322 * Release the security context.
1323 * @secdata contains the security context.
1324 * @seclen contains the length of the security context.
1326 * Security hooks for Audit
1329 * Allocate and initialize an LSM audit rule structure.
1330 * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
1331 * @op contains the operator the rule uses.
1332 * @rulestr contains the context where the rule will be applied to.
1333 * @lsmrule contains a pointer to receive the result.
1334 * Return 0 if @lsmrule has been successfully set,
1335 * -EINVAL in case of an invalid rule.
1337 * @audit_rule_known:
1338 * Specifies whether given @rule contains any fields related to current LSM.
1339 * @rule contains the audit rule of interest.
1340 * Return 1 in case of relation found, 0 otherwise.
1342 * @audit_rule_match:
1343 * Determine if given @secid matches a rule previously approved
1344 * by @audit_rule_known.
1345 * @secid contains the security id in question.
1346 * @field contains the field which relates to current LSM.
1347 * @op contains the operator that will be used for matching.
1348 * @rule points to the audit rule that will be checked against.
1349 * @actx points to the audit context associated with the check.
1350 * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
1353 * Deallocate the LSM audit rule structure previously allocated by
1355 * @rule contains the allocated rule
1357 * This is the main security structure.
1359 struct security_operations {
1360 char name[SECURITY_NAME_MAX + 1];
1362 int (*ptrace_access_check) (struct task_struct *child, unsigned int mode);
1363 int (*ptrace_traceme) (struct task_struct *parent);
1364 int (*capget) (struct task_struct *target,
1365 kernel_cap_t *effective,
1366 kernel_cap_t *inheritable, kernel_cap_t *permitted);
1367 int (*capset) (struct cred *new,
1368 const struct cred *old,
1369 const kernel_cap_t *effective,
1370 const kernel_cap_t *inheritable,
1371 const kernel_cap_t *permitted);
1372 int (*capable) (struct task_struct *tsk, const struct cred *cred,
1373 int cap, int audit);
1374 int (*acct) (struct file *file);
1375 int (*sysctl) (struct ctl_table *table, int op);
1376 int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
1377 int (*quota_on) (struct dentry *dentry);
1378 int (*syslog) (int type);
1379 int (*settime) (struct timespec *ts, struct timezone *tz);
1380 int (*vm_enough_memory) (struct mm_struct *mm, long pages);
1382 int (*bprm_set_creds) (struct linux_binprm *bprm);
1383 int (*bprm_check_security) (struct linux_binprm *bprm);
1384 int (*bprm_secureexec) (struct linux_binprm *bprm);
1385 void (*bprm_committing_creds) (struct linux_binprm *bprm);
1386 void (*bprm_committed_creds) (struct linux_binprm *bprm);
1388 int (*sb_alloc_security) (struct super_block *sb);
1389 void (*sb_free_security) (struct super_block *sb);
1390 int (*sb_copy_data) (char *orig, char *copy);
1391 int (*sb_kern_mount) (struct super_block *sb, int flags, void *data);
1392 int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
1393 int (*sb_statfs) (struct dentry *dentry);
1394 int (*sb_mount) (char *dev_name, struct path *path,
1395 char *type, unsigned long flags, void *data);
1396 int (*sb_check_sb) (struct vfsmount *mnt, struct path *path);
1397 int (*sb_umount) (struct vfsmount *mnt, int flags);
1398 void (*sb_umount_close) (struct vfsmount *mnt);
1399 void (*sb_umount_busy) (struct vfsmount *mnt);
1400 void (*sb_post_remount) (struct vfsmount *mnt,
1401 unsigned long flags, void *data);
1402 void (*sb_post_addmount) (struct vfsmount *mnt,
1403 struct path *mountpoint);
1404 int (*sb_pivotroot) (struct path *old_path,
1405 struct path *new_path);
1406 void (*sb_post_pivotroot) (struct path *old_path,
1407 struct path *new_path);
1408 int (*sb_set_mnt_opts) (struct super_block *sb,
1409 struct security_mnt_opts *opts);
1410 void (*sb_clone_mnt_opts) (const struct super_block *oldsb,
1411 struct super_block *newsb);
1412 int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
1414 #ifdef CONFIG_SECURITY_PATH
1415 int (*path_unlink) (struct path *dir, struct dentry *dentry);
1416 int (*path_mkdir) (struct path *dir, struct dentry *dentry, int mode);
1417 int (*path_rmdir) (struct path *dir, struct dentry *dentry);
1418 int (*path_mknod) (struct path *dir, struct dentry *dentry, int mode,
1420 int (*path_truncate) (struct path *path, loff_t length,
1421 unsigned int time_attrs);
1422 int (*path_symlink) (struct path *dir, struct dentry *dentry,
1423 const char *old_name);
1424 int (*path_link) (struct dentry *old_dentry, struct path *new_dir,
1425 struct dentry *new_dentry);
1426 int (*path_rename) (struct path *old_dir, struct dentry *old_dentry,
1427 struct path *new_dir, struct dentry *new_dentry);
1430 int (*inode_alloc_security) (struct inode *inode);
1431 void (*inode_free_security) (struct inode *inode);
1432 int (*inode_init_security) (struct inode *inode, struct inode *dir,
1433 char **name, void **value, size_t *len);
1434 int (*inode_create) (struct inode *dir,
1435 struct dentry *dentry, int mode);
1436 int (*inode_link) (struct dentry *old_dentry,
1437 struct inode *dir, struct dentry *new_dentry);
1438 int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
1439 int (*inode_symlink) (struct inode *dir,
1440 struct dentry *dentry, const char *old_name);
1441 int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, int mode);
1442 int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
1443 int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
1444 int mode, dev_t dev);
1445 int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
1446 struct inode *new_dir, struct dentry *new_dentry);
1447 int (*inode_readlink) (struct dentry *dentry);
1448 int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
1449 int (*inode_permission) (struct inode *inode, int mask);
1450 int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
1451 int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
1452 void (*inode_delete) (struct inode *inode);
1453 int (*inode_setxattr) (struct dentry *dentry, const char *name,
1454 const void *value, size_t size, int flags);
1455 void (*inode_post_setxattr) (struct dentry *dentry, const char *name,
1456 const void *value, size_t size, int flags);
1457 int (*inode_getxattr) (struct dentry *dentry, const char *name);
1458 int (*inode_listxattr) (struct dentry *dentry);
1459 int (*inode_removexattr) (struct dentry *dentry, const char *name);
1460 int (*inode_need_killpriv) (struct dentry *dentry);
1461 int (*inode_killpriv) (struct dentry *dentry);
1462 int (*inode_getsecurity) (const struct inode *inode, const char *name, void **buffer, bool alloc);
1463 int (*inode_setsecurity) (struct inode *inode, const char *name, const void *value, size_t size, int flags);
1464 int (*inode_listsecurity) (struct inode *inode, char *buffer, size_t buffer_size);
1465 void (*inode_getsecid) (const struct inode *inode, u32 *secid);
1467 int (*file_permission) (struct file *file, int mask);
1468 int (*file_alloc_security) (struct file *file);
1469 void (*file_free_security) (struct file *file);
1470 int (*file_ioctl) (struct file *file, unsigned int cmd,
1472 int (*file_mmap) (struct file *file,
1473 unsigned long reqprot, unsigned long prot,
1474 unsigned long flags, unsigned long addr,
1475 unsigned long addr_only);
1476 int (*file_mprotect) (struct vm_area_struct *vma,
1477 unsigned long reqprot,
1478 unsigned long prot);
1479 int (*file_lock) (struct file *file, unsigned int cmd);
1480 int (*file_fcntl) (struct file *file, unsigned int cmd,
1482 int (*file_set_fowner) (struct file *file);
1483 int (*file_send_sigiotask) (struct task_struct *tsk,
1484 struct fown_struct *fown, int sig);
1485 int (*file_receive) (struct file *file);
1486 int (*dentry_open) (struct file *file, const struct cred *cred);
1488 int (*task_create) (unsigned long clone_flags);
1489 void (*cred_free) (struct cred *cred);
1490 int (*cred_prepare)(struct cred *new, const struct cred *old,
1492 void (*cred_commit)(struct cred *new, const struct cred *old);
1493 int (*kernel_act_as)(struct cred *new, u32 secid);
1494 int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
1495 int (*kernel_module_request)(void);
1496 int (*task_setuid) (uid_t id0, uid_t id1, uid_t id2, int flags);
1497 int (*task_fix_setuid) (struct cred *new, const struct cred *old,
1499 int (*task_setgid) (gid_t id0, gid_t id1, gid_t id2, int flags);
1500 int (*task_setpgid) (struct task_struct *p, pid_t pgid);
1501 int (*task_getpgid) (struct task_struct *p);
1502 int (*task_getsid) (struct task_struct *p);
1503 void (*task_getsecid) (struct task_struct *p, u32 *secid);
1504 int (*task_setgroups) (struct group_info *group_info);
1505 int (*task_setnice) (struct task_struct *p, int nice);
1506 int (*task_setioprio) (struct task_struct *p, int ioprio);
1507 int (*task_getioprio) (struct task_struct *p);
1508 int (*task_setrlimit) (unsigned int resource, struct rlimit *new_rlim);
1509 int (*task_setscheduler) (struct task_struct *p, int policy,
1510 struct sched_param *lp);
1511 int (*task_getscheduler) (struct task_struct *p);
1512 int (*task_movememory) (struct task_struct *p);
1513 int (*task_kill) (struct task_struct *p,
1514 struct siginfo *info, int sig, u32 secid);
1515 int (*task_wait) (struct task_struct *p);
1516 int (*task_prctl) (int option, unsigned long arg2,
1517 unsigned long arg3, unsigned long arg4,
1518 unsigned long arg5);
1519 void (*task_to_inode) (struct task_struct *p, struct inode *inode);
1521 int (*ipc_permission) (struct kern_ipc_perm *ipcp, short flag);
1522 void (*ipc_getsecid) (struct kern_ipc_perm *ipcp, u32 *secid);
1524 int (*msg_msg_alloc_security) (struct msg_msg *msg);
1525 void (*msg_msg_free_security) (struct msg_msg *msg);
1527 int (*msg_queue_alloc_security) (struct msg_queue *msq);
1528 void (*msg_queue_free_security) (struct msg_queue *msq);
1529 int (*msg_queue_associate) (struct msg_queue *msq, int msqflg);
1530 int (*msg_queue_msgctl) (struct msg_queue *msq, int cmd);
1531 int (*msg_queue_msgsnd) (struct msg_queue *msq,
1532 struct msg_msg *msg, int msqflg);
1533 int (*msg_queue_msgrcv) (struct msg_queue *msq,
1534 struct msg_msg *msg,
1535 struct task_struct *target,
1536 long type, int mode);
1538 int (*shm_alloc_security) (struct shmid_kernel *shp);
1539 void (*shm_free_security) (struct shmid_kernel *shp);
1540 int (*shm_associate) (struct shmid_kernel *shp, int shmflg);
1541 int (*shm_shmctl) (struct shmid_kernel *shp, int cmd);
1542 int (*shm_shmat) (struct shmid_kernel *shp,
1543 char __user *shmaddr, int shmflg);
1545 int (*sem_alloc_security) (struct sem_array *sma);
1546 void (*sem_free_security) (struct sem_array *sma);
1547 int (*sem_associate) (struct sem_array *sma, int semflg);
1548 int (*sem_semctl) (struct sem_array *sma, int cmd);
1549 int (*sem_semop) (struct sem_array *sma,
1550 struct sembuf *sops, unsigned nsops, int alter);
1552 int (*netlink_send) (struct sock *sk, struct sk_buff *skb);
1553 int (*netlink_recv) (struct sk_buff *skb, int cap);
1555 void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1557 int (*getprocattr) (struct task_struct *p, char *name, char **value);
1558 int (*setprocattr) (struct task_struct *p, char *name, void *value, size_t size);
1559 int (*secid_to_secctx) (u32 secid, char **secdata, u32 *seclen);
1560 int (*secctx_to_secid) (const char *secdata, u32 seclen, u32 *secid);
1561 void (*release_secctx) (char *secdata, u32 seclen);
1563 #ifdef CONFIG_SECURITY_NETWORK
1564 int (*unix_stream_connect) (struct socket *sock,
1565 struct socket *other, struct sock *newsk);
1566 int (*unix_may_send) (struct socket *sock, struct socket *other);
1568 int (*socket_create) (int family, int type, int protocol, int kern);
1569 int (*socket_post_create) (struct socket *sock, int family,
1570 int type, int protocol, int kern);
1571 int (*socket_bind) (struct socket *sock,
1572 struct sockaddr *address, int addrlen);
1573 int (*socket_connect) (struct socket *sock,
1574 struct sockaddr *address, int addrlen);
1575 int (*socket_listen) (struct socket *sock, int backlog);
1576 int (*socket_accept) (struct socket *sock, struct socket *newsock);
1577 int (*socket_sendmsg) (struct socket *sock,
1578 struct msghdr *msg, int size);
1579 int (*socket_recvmsg) (struct socket *sock,
1580 struct msghdr *msg, int size, int flags);
1581 int (*socket_getsockname) (struct socket *sock);
1582 int (*socket_getpeername) (struct socket *sock);
1583 int (*socket_getsockopt) (struct socket *sock, int level, int optname);
1584 int (*socket_setsockopt) (struct socket *sock, int level, int optname);
1585 int (*socket_shutdown) (struct socket *sock, int how);
1586 int (*socket_sock_rcv_skb) (struct sock *sk, struct sk_buff *skb);
1587 int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
1588 int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
1589 int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
1590 void (*sk_free_security) (struct sock *sk);
1591 void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
1592 void (*sk_getsecid) (struct sock *sk, u32 *secid);
1593 void (*sock_graft) (struct sock *sk, struct socket *parent);
1594 int (*inet_conn_request) (struct sock *sk, struct sk_buff *skb,
1595 struct request_sock *req);
1596 void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req);
1597 void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb);
1598 void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
1599 #endif /* CONFIG_SECURITY_NETWORK */
1601 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1602 int (*xfrm_policy_alloc_security) (struct xfrm_sec_ctx **ctxp,
1603 struct xfrm_user_sec_ctx *sec_ctx);
1604 int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
1605 void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
1606 int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
1607 int (*xfrm_state_alloc_security) (struct xfrm_state *x,
1608 struct xfrm_user_sec_ctx *sec_ctx,
1610 void (*xfrm_state_free_security) (struct xfrm_state *x);
1611 int (*xfrm_state_delete_security) (struct xfrm_state *x);
1612 int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1613 int (*xfrm_state_pol_flow_match) (struct xfrm_state *x,
1614 struct xfrm_policy *xp,
1616 int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall);
1617 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1619 /* key management security hooks */
1621 int (*key_alloc) (struct key *key, const struct cred *cred, unsigned long flags);
1622 void (*key_free) (struct key *key);
1623 int (*key_permission) (key_ref_t key_ref,
1624 const struct cred *cred,
1626 int (*key_getsecurity)(struct key *key, char **_buffer);
1627 #endif /* CONFIG_KEYS */
1630 int (*audit_rule_init) (u32 field, u32 op, char *rulestr, void **lsmrule);
1631 int (*audit_rule_known) (struct audit_krule *krule);
1632 int (*audit_rule_match) (u32 secid, u32 field, u32 op, void *lsmrule,
1633 struct audit_context *actx);
1634 void (*audit_rule_free) (void *lsmrule);
1635 #endif /* CONFIG_AUDIT */
1639 extern int security_init(void);
1640 extern int security_module_enable(struct security_operations *ops);
1641 extern int register_security(struct security_operations *ops);
1643 /* Security operations */
1644 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
1645 int security_ptrace_traceme(struct task_struct *parent);
1646 int security_capget(struct task_struct *target,
1647 kernel_cap_t *effective,
1648 kernel_cap_t *inheritable,
1649 kernel_cap_t *permitted);
1650 int security_capset(struct cred *new, const struct cred *old,
1651 const kernel_cap_t *effective,
1652 const kernel_cap_t *inheritable,
1653 const kernel_cap_t *permitted);
1654 int security_capable(int cap);
1655 int security_real_capable(struct task_struct *tsk, int cap);
1656 int security_real_capable_noaudit(struct task_struct *tsk, int cap);
1657 int security_acct(struct file *file);
1658 int security_sysctl(struct ctl_table *table, int op);
1659 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
1660 int security_quota_on(struct dentry *dentry);
1661 int security_syslog(int type);
1662 int security_settime(struct timespec *ts, struct timezone *tz);
1663 int security_vm_enough_memory(long pages);
1664 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
1665 int security_vm_enough_memory_kern(long pages);
1666 int security_bprm_set_creds(struct linux_binprm *bprm);
1667 int security_bprm_check(struct linux_binprm *bprm);
1668 void security_bprm_committing_creds(struct linux_binprm *bprm);
1669 void security_bprm_committed_creds(struct linux_binprm *bprm);
1670 int security_bprm_secureexec(struct linux_binprm *bprm);
1671 int security_sb_alloc(struct super_block *sb);
1672 void security_sb_free(struct super_block *sb);
1673 int security_sb_copy_data(char *orig, char *copy);
1674 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
1675 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
1676 int security_sb_statfs(struct dentry *dentry);
1677 int security_sb_mount(char *dev_name, struct path *path,
1678 char *type, unsigned long flags, void *data);
1679 int security_sb_check_sb(struct vfsmount *mnt, struct path *path);
1680 int security_sb_umount(struct vfsmount *mnt, int flags);
1681 void security_sb_umount_close(struct vfsmount *mnt);
1682 void security_sb_umount_busy(struct vfsmount *mnt);
1683 void security_sb_post_remount(struct vfsmount *mnt, unsigned long flags, void *data);
1684 void security_sb_post_addmount(struct vfsmount *mnt, struct path *mountpoint);
1685 int security_sb_pivotroot(struct path *old_path, struct path *new_path);
1686 void security_sb_post_pivotroot(struct path *old_path, struct path *new_path);
1687 int security_sb_set_mnt_opts(struct super_block *sb, struct security_mnt_opts *opts);
1688 void security_sb_clone_mnt_opts(const struct super_block *oldsb,
1689 struct super_block *newsb);
1690 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
1692 int security_inode_alloc(struct inode *inode);
1693 void security_inode_free(struct inode *inode);
1694 int security_inode_init_security(struct inode *inode, struct inode *dir,
1695 char **name, void **value, size_t *len);
1696 int security_inode_create(struct inode *dir, struct dentry *dentry, int mode);
1697 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1698 struct dentry *new_dentry);
1699 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
1700 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
1701 const char *old_name);
1702 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode);
1703 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
1704 int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev);
1705 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
1706 struct inode *new_dir, struct dentry *new_dentry);
1707 int security_inode_readlink(struct dentry *dentry);
1708 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
1709 int security_inode_permission(struct inode *inode, int mask);
1710 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
1711 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
1712 void security_inode_delete(struct inode *inode);
1713 int security_inode_setxattr(struct dentry *dentry, const char *name,
1714 const void *value, size_t size, int flags);
1715 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1716 const void *value, size_t size, int flags);
1717 int security_inode_getxattr(struct dentry *dentry, const char *name);
1718 int security_inode_listxattr(struct dentry *dentry);
1719 int security_inode_removexattr(struct dentry *dentry, const char *name);
1720 int security_inode_need_killpriv(struct dentry *dentry);
1721 int security_inode_killpriv(struct dentry *dentry);
1722 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
1723 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1724 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
1725 void security_inode_getsecid(const struct inode *inode, u32 *secid);
1726 int security_file_permission(struct file *file, int mask);
1727 int security_file_alloc(struct file *file);
1728 void security_file_free(struct file *file);
1729 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
1730 int security_file_mmap(struct file *file, unsigned long reqprot,
1731 unsigned long prot, unsigned long flags,
1732 unsigned long addr, unsigned long addr_only);
1733 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1734 unsigned long prot);
1735 int security_file_lock(struct file *file, unsigned int cmd);
1736 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
1737 int security_file_set_fowner(struct file *file);
1738 int security_file_send_sigiotask(struct task_struct *tsk,
1739 struct fown_struct *fown, int sig);
1740 int security_file_receive(struct file *file);
1741 int security_dentry_open(struct file *file, const struct cred *cred);
1742 int security_task_create(unsigned long clone_flags);
1743 void security_cred_free(struct cred *cred);
1744 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
1745 void security_commit_creds(struct cred *new, const struct cred *old);
1746 int security_kernel_act_as(struct cred *new, u32 secid);
1747 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
1748 int security_kernel_module_request(void);
1749 int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags);
1750 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1752 int security_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags);
1753 int security_task_setpgid(struct task_struct *p, pid_t pgid);
1754 int security_task_getpgid(struct task_struct *p);
1755 int security_task_getsid(struct task_struct *p);
1756 void security_task_getsecid(struct task_struct *p, u32 *secid);
1757 int security_task_setgroups(struct group_info *group_info);
1758 int security_task_setnice(struct task_struct *p, int nice);
1759 int security_task_setioprio(struct task_struct *p, int ioprio);
1760 int security_task_getioprio(struct task_struct *p);
1761 int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim);
1762 int security_task_setscheduler(struct task_struct *p,
1763 int policy, struct sched_param *lp);
1764 int security_task_getscheduler(struct task_struct *p);
1765 int security_task_movememory(struct task_struct *p);
1766 int security_task_kill(struct task_struct *p, struct siginfo *info,
1767 int sig, u32 secid);
1768 int security_task_wait(struct task_struct *p);
1769 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1770 unsigned long arg4, unsigned long arg5);
1771 void security_task_to_inode(struct task_struct *p, struct inode *inode);
1772 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
1773 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
1774 int security_msg_msg_alloc(struct msg_msg *msg);
1775 void security_msg_msg_free(struct msg_msg *msg);
1776 int security_msg_queue_alloc(struct msg_queue *msq);
1777 void security_msg_queue_free(struct msg_queue *msq);
1778 int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
1779 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
1780 int security_msg_queue_msgsnd(struct msg_queue *msq,
1781 struct msg_msg *msg, int msqflg);
1782 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1783 struct task_struct *target, long type, int mode);
1784 int security_shm_alloc(struct shmid_kernel *shp);
1785 void security_shm_free(struct shmid_kernel *shp);
1786 int security_shm_associate(struct shmid_kernel *shp, int shmflg);
1787 int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
1788 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
1789 int security_sem_alloc(struct sem_array *sma);
1790 void security_sem_free(struct sem_array *sma);
1791 int security_sem_associate(struct sem_array *sma, int semflg);
1792 int security_sem_semctl(struct sem_array *sma, int cmd);
1793 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1794 unsigned nsops, int alter);
1795 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
1796 int security_getprocattr(struct task_struct *p, char *name, char **value);
1797 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
1798 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
1799 int security_netlink_recv(struct sk_buff *skb, int cap);
1800 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
1801 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
1802 void security_release_secctx(char *secdata, u32 seclen);
1804 #else /* CONFIG_SECURITY */
1805 struct security_mnt_opts {
1808 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
1812 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
1817 * This is the default capabilities functionality. Most of these functions
1818 * are just stubbed out, but a few must call the proper capable code.
1821 static inline int security_init(void)
1826 static inline int security_ptrace_access_check(struct task_struct *child,
1829 return cap_ptrace_access_check(child, mode);
1832 static inline int security_ptrace_traceme(struct task_struct *parent)
1834 return cap_ptrace_traceme(parent);
1837 static inline int security_capget(struct task_struct *target,
1838 kernel_cap_t *effective,
1839 kernel_cap_t *inheritable,
1840 kernel_cap_t *permitted)
1842 return cap_capget(target, effective, inheritable, permitted);
1845 static inline int security_capset(struct cred *new,
1846 const struct cred *old,
1847 const kernel_cap_t *effective,
1848 const kernel_cap_t *inheritable,
1849 const kernel_cap_t *permitted)
1851 return cap_capset(new, old, effective, inheritable, permitted);
1854 static inline int security_capable(int cap)
1856 return cap_capable(current, current_cred(), cap, SECURITY_CAP_AUDIT);
1859 static inline int security_real_capable(struct task_struct *tsk, int cap)
1864 ret = cap_capable(tsk, __task_cred(tsk), cap, SECURITY_CAP_AUDIT);
1870 int security_real_capable_noaudit(struct task_struct *tsk, int cap)
1875 ret = cap_capable(tsk, __task_cred(tsk), cap,
1876 SECURITY_CAP_NOAUDIT);
1881 static inline int security_acct(struct file *file)
1886 static inline int security_sysctl(struct ctl_table *table, int op)
1891 static inline int security_quotactl(int cmds, int type, int id,
1892 struct super_block *sb)
1897 static inline int security_quota_on(struct dentry *dentry)
1902 static inline int security_syslog(int type)
1904 return cap_syslog(type);
1907 static inline int security_settime(struct timespec *ts, 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_kern_mount(struct super_block *sb, int flags, void *data)
1972 static inline int security_sb_show_options(struct seq_file *m,
1973 struct super_block *sb)
1978 static inline int security_sb_statfs(struct dentry *dentry)
1983 static inline int security_sb_mount(char *dev_name, struct path *path,
1984 char *type, unsigned long flags,
1990 static inline int security_sb_check_sb(struct vfsmount *mnt,
1996 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
2001 static inline void security_sb_umount_close(struct vfsmount *mnt)
2004 static inline void security_sb_umount_busy(struct vfsmount *mnt)
2007 static inline void security_sb_post_remount(struct vfsmount *mnt,
2008 unsigned long flags, void *data)
2011 static inline void security_sb_post_addmount(struct vfsmount *mnt,
2012 struct path *mountpoint)
2015 static inline int security_sb_pivotroot(struct path *old_path,
2016 struct path *new_path)
2021 static inline void security_sb_post_pivotroot(struct path *old_path,
2022 struct path *new_path)
2025 static inline int security_sb_set_mnt_opts(struct super_block *sb,
2026 struct security_mnt_opts *opts)
2031 static inline void security_sb_clone_mnt_opts(const struct super_block *oldsb,
2032 struct super_block *newsb)
2035 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
2040 static inline int security_inode_alloc(struct inode *inode)
2045 static inline void security_inode_free(struct inode *inode)
2048 static inline int security_inode_init_security(struct inode *inode,
2057 static inline int security_inode_create(struct inode *dir,
2058 struct dentry *dentry,
2064 static inline int security_inode_link(struct dentry *old_dentry,
2066 struct dentry *new_dentry)
2071 static inline int security_inode_unlink(struct inode *dir,
2072 struct dentry *dentry)
2077 static inline int security_inode_symlink(struct inode *dir,
2078 struct dentry *dentry,
2079 const char *old_name)
2084 static inline int security_inode_mkdir(struct inode *dir,
2085 struct dentry *dentry,
2091 static inline int security_inode_rmdir(struct inode *dir,
2092 struct dentry *dentry)
2097 static inline int security_inode_mknod(struct inode *dir,
2098 struct dentry *dentry,
2099 int mode, dev_t dev)
2104 static inline int security_inode_rename(struct inode *old_dir,
2105 struct dentry *old_dentry,
2106 struct inode *new_dir,
2107 struct dentry *new_dentry)
2112 static inline int security_inode_readlink(struct dentry *dentry)
2117 static inline int security_inode_follow_link(struct dentry *dentry,
2118 struct nameidata *nd)
2123 static inline int security_inode_permission(struct inode *inode, int mask)
2128 static inline int security_inode_setattr(struct dentry *dentry,
2134 static inline int security_inode_getattr(struct vfsmount *mnt,
2135 struct dentry *dentry)
2140 static inline void security_inode_delete(struct inode *inode)
2143 static inline int security_inode_setxattr(struct dentry *dentry,
2144 const char *name, const void *value, size_t size, int flags)
2146 return cap_inode_setxattr(dentry, name, value, size, flags);
2149 static inline void security_inode_post_setxattr(struct dentry *dentry,
2150 const char *name, const void *value, size_t size, int flags)
2153 static inline int security_inode_getxattr(struct dentry *dentry,
2159 static inline int security_inode_listxattr(struct dentry *dentry)
2164 static inline int security_inode_removexattr(struct dentry *dentry,
2167 return cap_inode_removexattr(dentry, name);
2170 static inline int security_inode_need_killpriv(struct dentry *dentry)
2172 return cap_inode_need_killpriv(dentry);
2175 static inline int security_inode_killpriv(struct dentry *dentry)
2177 return cap_inode_killpriv(dentry);
2180 static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
2185 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
2190 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
2195 static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
2200 static inline int security_file_permission(struct file *file, int mask)
2205 static inline int security_file_alloc(struct file *file)
2210 static inline void security_file_free(struct file *file)
2213 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
2219 static inline int security_file_mmap(struct file *file, unsigned long reqprot,
2221 unsigned long flags,
2223 unsigned long addr_only)
2225 return cap_file_mmap(file, reqprot, prot, flags, addr, addr_only);
2228 static inline int security_file_mprotect(struct vm_area_struct *vma,
2229 unsigned long reqprot,
2235 static inline int security_file_lock(struct file *file, unsigned int cmd)
2240 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
2246 static inline int security_file_set_fowner(struct file *file)
2251 static inline int security_file_send_sigiotask(struct task_struct *tsk,
2252 struct fown_struct *fown,
2258 static inline int security_file_receive(struct file *file)
2263 static inline int security_dentry_open(struct file *file,
2264 const struct cred *cred)
2269 static inline int security_task_create(unsigned long clone_flags)
2274 static inline void security_cred_free(struct cred *cred)
2277 static inline int security_prepare_creds(struct cred *new,
2278 const struct cred *old,
2284 static inline void security_commit_creds(struct cred *new,
2285 const struct cred *old)
2289 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
2294 static inline int security_kernel_create_files_as(struct cred *cred,
2295 struct inode *inode)
2300 static inline int security_kernel_module_request(void)
2305 static inline int security_task_setuid(uid_t id0, uid_t id1, uid_t id2,
2311 static inline int security_task_fix_setuid(struct cred *new,
2312 const struct cred *old,
2315 return cap_task_fix_setuid(new, old, flags);
2318 static inline int security_task_setgid(gid_t id0, gid_t id1, gid_t id2,
2324 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
2329 static inline int security_task_getpgid(struct task_struct *p)
2334 static inline int security_task_getsid(struct task_struct *p)
2339 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
2344 static inline int security_task_setgroups(struct group_info *group_info)
2349 static inline int security_task_setnice(struct task_struct *p, int nice)
2351 return cap_task_setnice(p, nice);
2354 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
2356 return cap_task_setioprio(p, ioprio);
2359 static inline int security_task_getioprio(struct task_struct *p)
2364 static inline int security_task_setrlimit(unsigned int resource,
2365 struct rlimit *new_rlim)
2370 static inline int security_task_setscheduler(struct task_struct *p,
2372 struct sched_param *lp)
2374 return cap_task_setscheduler(p, policy, lp);
2377 static inline int security_task_getscheduler(struct task_struct *p)
2382 static inline int security_task_movememory(struct task_struct *p)
2387 static inline int security_task_kill(struct task_struct *p,
2388 struct siginfo *info, int sig,
2394 static inline int security_task_wait(struct task_struct *p)
2399 static inline int security_task_prctl(int option, unsigned long arg2,
2404 return cap_task_prctl(option, arg2, arg3, arg3, arg5);
2407 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
2410 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
2416 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
2421 static inline int security_msg_msg_alloc(struct msg_msg *msg)
2426 static inline void security_msg_msg_free(struct msg_msg *msg)
2429 static inline int security_msg_queue_alloc(struct msg_queue *msq)
2434 static inline void security_msg_queue_free(struct msg_queue *msq)
2437 static inline int security_msg_queue_associate(struct msg_queue *msq,
2443 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
2448 static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
2449 struct msg_msg *msg, int msqflg)
2454 static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
2455 struct msg_msg *msg,
2456 struct task_struct *target,
2457 long type, int mode)
2462 static inline int security_shm_alloc(struct shmid_kernel *shp)
2467 static inline void security_shm_free(struct shmid_kernel *shp)
2470 static inline int security_shm_associate(struct shmid_kernel *shp,
2476 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
2481 static inline int security_shm_shmat(struct shmid_kernel *shp,
2482 char __user *shmaddr, int shmflg)
2487 static inline int security_sem_alloc(struct sem_array *sma)
2492 static inline void security_sem_free(struct sem_array *sma)
2495 static inline int security_sem_associate(struct sem_array *sma, int semflg)
2500 static inline int security_sem_semctl(struct sem_array *sma, int cmd)
2505 static inline int security_sem_semop(struct sem_array *sma,
2506 struct sembuf *sops, unsigned nsops,
2512 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
2515 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
2520 static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2525 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
2527 return cap_netlink_send(sk, skb);
2530 static inline int security_netlink_recv(struct sk_buff *skb, int cap)
2532 return cap_netlink_recv(skb, cap);
2535 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2540 static inline int security_secctx_to_secid(const char *secdata,
2547 static inline void security_release_secctx(char *secdata, u32 seclen)
2550 #endif /* CONFIG_SECURITY */
2552 #ifdef CONFIG_SECURITY_NETWORK
2554 int security_unix_stream_connect(struct socket *sock, struct socket *other,
2555 struct sock *newsk);
2556 int security_unix_may_send(struct socket *sock, struct socket *other);
2557 int security_socket_create(int family, int type, int protocol, int kern);
2558 int security_socket_post_create(struct socket *sock, int family,
2559 int type, int protocol, int kern);
2560 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
2561 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
2562 int security_socket_listen(struct socket *sock, int backlog);
2563 int security_socket_accept(struct socket *sock, struct socket *newsock);
2564 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
2565 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2566 int size, int flags);
2567 int security_socket_getsockname(struct socket *sock);
2568 int security_socket_getpeername(struct socket *sock);
2569 int security_socket_getsockopt(struct socket *sock, int level, int optname);
2570 int security_socket_setsockopt(struct socket *sock, int level, int optname);
2571 int security_socket_shutdown(struct socket *sock, int how);
2572 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
2573 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2574 int __user *optlen, unsigned len);
2575 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
2576 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
2577 void security_sk_free(struct sock *sk);
2578 void security_sk_clone(const struct sock *sk, struct sock *newsk);
2579 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
2580 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
2581 void security_sock_graft(struct sock*sk, struct socket *parent);
2582 int security_inet_conn_request(struct sock *sk,
2583 struct sk_buff *skb, struct request_sock *req);
2584 void security_inet_csk_clone(struct sock *newsk,
2585 const struct request_sock *req);
2586 void security_inet_conn_established(struct sock *sk,
2587 struct sk_buff *skb);
2589 #else /* CONFIG_SECURITY_NETWORK */
2590 static inline int security_unix_stream_connect(struct socket *sock,
2591 struct socket *other,
2597 static inline int security_unix_may_send(struct socket *sock,
2598 struct socket *other)
2603 static inline int security_socket_create(int family, int type,
2604 int protocol, int kern)
2609 static inline int security_socket_post_create(struct socket *sock,
2612 int protocol, int kern)
2617 static inline int security_socket_bind(struct socket *sock,
2618 struct sockaddr *address,
2624 static inline int security_socket_connect(struct socket *sock,
2625 struct sockaddr *address,
2631 static inline int security_socket_listen(struct socket *sock, int backlog)
2636 static inline int security_socket_accept(struct socket *sock,
2637 struct socket *newsock)
2642 static inline int security_socket_sendmsg(struct socket *sock,
2643 struct msghdr *msg, int size)
2648 static inline int security_socket_recvmsg(struct socket *sock,
2649 struct msghdr *msg, int size,
2655 static inline int security_socket_getsockname(struct socket *sock)
2660 static inline int security_socket_getpeername(struct socket *sock)
2665 static inline int security_socket_getsockopt(struct socket *sock,
2666 int level, int optname)
2671 static inline int security_socket_setsockopt(struct socket *sock,
2672 int level, int optname)
2677 static inline int security_socket_shutdown(struct socket *sock, int how)
2681 static inline int security_sock_rcv_skb(struct sock *sk,
2682 struct sk_buff *skb)
2687 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2688 int __user *optlen, unsigned len)
2690 return -ENOPROTOOPT;
2693 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
2695 return -ENOPROTOOPT;
2698 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2703 static inline void security_sk_free(struct sock *sk)
2707 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
2711 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
2715 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2719 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
2723 static inline int security_inet_conn_request(struct sock *sk,
2724 struct sk_buff *skb, struct request_sock *req)
2729 static inline void security_inet_csk_clone(struct sock *newsk,
2730 const struct request_sock *req)
2734 static inline void security_inet_conn_established(struct sock *sk,
2735 struct sk_buff *skb)
2738 #endif /* CONFIG_SECURITY_NETWORK */
2740 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2742 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx);
2743 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
2744 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
2745 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
2746 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
2747 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2748 struct xfrm_sec_ctx *polsec, u32 secid);
2749 int security_xfrm_state_delete(struct xfrm_state *x);
2750 void security_xfrm_state_free(struct xfrm_state *x);
2751 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
2752 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2753 struct xfrm_policy *xp, struct flowi *fl);
2754 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
2755 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
2757 #else /* CONFIG_SECURITY_NETWORK_XFRM */
2759 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
2764 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
2769 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
2773 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
2778 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
2779 struct xfrm_user_sec_ctx *sec_ctx)
2784 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2785 struct xfrm_sec_ctx *polsec, u32 secid)
2790 static inline void security_xfrm_state_free(struct xfrm_state *x)
2794 static inline int security_xfrm_state_delete(struct xfrm_state *x)
2799 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
2804 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2805 struct xfrm_policy *xp, struct flowi *fl)
2810 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
2815 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2819 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2821 #ifdef CONFIG_SECURITY_PATH
2822 int security_path_unlink(struct path *dir, struct dentry *dentry);
2823 int security_path_mkdir(struct path *dir, struct dentry *dentry, int mode);
2824 int security_path_rmdir(struct path *dir, struct dentry *dentry);
2825 int security_path_mknod(struct path *dir, struct dentry *dentry, int mode,
2827 int security_path_truncate(struct path *path, loff_t length,
2828 unsigned int time_attrs);
2829 int security_path_symlink(struct path *dir, struct dentry *dentry,
2830 const char *old_name);
2831 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
2832 struct dentry *new_dentry);
2833 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
2834 struct path *new_dir, struct dentry *new_dentry);
2835 #else /* CONFIG_SECURITY_PATH */
2836 static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
2841 static inline int security_path_mkdir(struct path *dir, struct dentry *dentry,
2847 static inline int security_path_rmdir(struct path *dir, struct dentry *dentry)
2852 static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
2853 int mode, unsigned int dev)
2858 static inline int security_path_truncate(struct path *path, loff_t length,
2859 unsigned int time_attrs)
2864 static inline int security_path_symlink(struct path *dir, struct dentry *dentry,
2865 const char *old_name)
2870 static inline int security_path_link(struct dentry *old_dentry,
2871 struct path *new_dir,
2872 struct dentry *new_dentry)
2877 static inline int security_path_rename(struct path *old_dir,
2878 struct dentry *old_dentry,
2879 struct path *new_dir,
2880 struct dentry *new_dentry)
2884 #endif /* CONFIG_SECURITY_PATH */
2887 #ifdef CONFIG_SECURITY
2889 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
2890 void security_key_free(struct key *key);
2891 int security_key_permission(key_ref_t key_ref,
2892 const struct cred *cred, key_perm_t perm);
2893 int security_key_getsecurity(struct key *key, char **_buffer);
2897 static inline int security_key_alloc(struct key *key,
2898 const struct cred *cred,
2899 unsigned long flags)
2904 static inline void security_key_free(struct key *key)
2908 static inline int security_key_permission(key_ref_t key_ref,
2909 const struct cred *cred,
2915 static inline int security_key_getsecurity(struct key *key, char **_buffer)
2922 #endif /* CONFIG_KEYS */
2925 #ifdef CONFIG_SECURITY
2926 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
2927 int security_audit_rule_known(struct audit_krule *krule);
2928 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
2929 struct audit_context *actx);
2930 void security_audit_rule_free(void *lsmrule);
2934 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
2940 static inline int security_audit_rule_known(struct audit_krule *krule)
2945 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
2946 void *lsmrule, struct audit_context *actx)
2951 static inline void security_audit_rule_free(void *lsmrule)
2954 #endif /* CONFIG_SECURITY */
2955 #endif /* CONFIG_AUDIT */
2957 #ifdef CONFIG_SECURITYFS
2959 extern struct dentry *securityfs_create_file(const char *name, mode_t mode,
2960 struct dentry *parent, void *data,
2961 const struct file_operations *fops);
2962 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
2963 extern void securityfs_remove(struct dentry *dentry);
2965 #else /* CONFIG_SECURITYFS */
2967 static inline struct dentry *securityfs_create_dir(const char *name,
2968 struct dentry *parent)
2970 return ERR_PTR(-ENODEV);
2973 static inline struct dentry *securityfs_create_file(const char *name,
2975 struct dentry *parent,
2977 const struct file_operations *fops)
2979 return ERR_PTR(-ENODEV);
2982 static inline void securityfs_remove(struct dentry *dentry)
2987 #ifdef CONFIG_SECURITY
2989 static inline char *alloc_secdata(void)
2991 return (char *)get_zeroed_page(GFP_KERNEL);
2994 static inline void free_secdata(void *secdata)
2996 free_page((unsigned long)secdata);
3001 static inline char *alloc_secdata(void)
3006 static inline void free_secdata(void *secdata)
3008 #endif /* CONFIG_SECURITY */
3010 #endif /* ! __LINUX_SECURITY_H */