4 * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
5 * Copyright (C) 2001 Greg Kroah-Hartman <greg@kroah.com>
6 * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
7 * Copyright (C) 2001 James Morris <jmorris@intercode.com.au>
8 * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group)
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * Due to this file being licensed under the GPL there is controversy over
16 * whether this permits you to write a module that #includes this file
17 * without placing your module under the GPL. Please consult a lawyer for
18 * advice before doing this.
22 #ifndef __LINUX_SECURITY_H
23 #define __LINUX_SECURITY_H
26 #include <linux/fsnotify.h>
27 #include <linux/binfmts.h>
28 #include <linux/signal.h>
29 #include <linux/resource.h>
30 #include <linux/sem.h>
31 #include <linux/shm.h>
32 #include <linux/mm.h> /* PAGE_ALIGN */
33 #include <linux/msg.h>
34 #include <linux/sched.h>
35 #include <linux/key.h>
36 #include <linux/xfrm.h>
37 #include <linux/slab.h>
40 /* Maximum number of letters for an LSM name string */
41 #define SECURITY_NAME_MAX 10
43 /* If capable should audit the security request */
44 #define SECURITY_CAP_NOAUDIT 0
45 #define SECURITY_CAP_AUDIT 1
51 * These functions are in security/capability.c and are used
52 * as the default capabilities functions
54 extern int cap_capable(struct task_struct *tsk, const struct cred *cred,
56 extern int cap_settime(struct timespec *ts, struct timezone *tz);
57 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
58 extern int cap_ptrace_traceme(struct task_struct *parent);
59 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
60 extern int cap_capset(struct cred *new, const struct cred *old,
61 const kernel_cap_t *effective,
62 const kernel_cap_t *inheritable,
63 const kernel_cap_t *permitted);
64 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
65 extern int cap_bprm_secureexec(struct linux_binprm *bprm);
66 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
67 const void *value, size_t size, int flags);
68 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
69 extern int cap_inode_need_killpriv(struct dentry *dentry);
70 extern int cap_inode_killpriv(struct dentry *dentry);
71 extern int cap_file_mmap(struct file *file, unsigned long reqprot,
72 unsigned long prot, unsigned long flags,
73 unsigned long addr, unsigned long addr_only);
74 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
75 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
76 unsigned long arg4, unsigned long arg5);
77 extern int cap_task_setscheduler(struct task_struct *p, int policy, struct sched_param *lp);
78 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
79 extern int cap_task_setnice(struct task_struct *p, int nice);
80 extern int cap_syslog(int type, bool from_file);
81 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
93 struct xfrm_user_sec_ctx;
96 extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
97 extern int cap_netlink_recv(struct sk_buff *skb, int cap);
99 void reset_security_ops(void);
102 extern unsigned long mmap_min_addr;
103 extern unsigned long dac_mmap_min_addr;
105 #define dac_mmap_min_addr 0UL
109 * Values used in the task_security_ops calls
111 /* setuid or setgid, id0 == uid or gid */
112 #define LSM_SETID_ID 1
114 /* setreuid or setregid, id0 == real, id1 == eff */
115 #define LSM_SETID_RE 2
117 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
118 #define LSM_SETID_RES 4
120 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
121 #define LSM_SETID_FS 8
123 /* forward declares to avoid warnings */
127 /* bprm->unsafe reasons */
128 #define LSM_UNSAFE_SHARE 1
129 #define LSM_UNSAFE_PTRACE 2
130 #define LSM_UNSAFE_PTRACE_CAP 4
134 * If a hint addr is less than mmap_min_addr change hint to be as
135 * low as possible but still greater than mmap_min_addr
137 static inline unsigned long round_hint_to_min(unsigned long hint)
140 if (((void *)hint != NULL) &&
141 (hint < mmap_min_addr))
142 return PAGE_ALIGN(mmap_min_addr);
145 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
146 void __user *buffer, size_t *lenp, loff_t *ppos);
149 #ifdef CONFIG_SECURITY
151 struct security_mnt_opts {
157 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
159 opts->mnt_opts = NULL;
160 opts->mnt_opts_flags = NULL;
161 opts->num_mnt_opts = 0;
164 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
168 for (i = 0; i < opts->num_mnt_opts; i++)
169 kfree(opts->mnt_opts[i]);
170 kfree(opts->mnt_opts);
171 opts->mnt_opts = NULL;
172 kfree(opts->mnt_opts_flags);
173 opts->mnt_opts_flags = NULL;
174 opts->num_mnt_opts = 0;
178 * struct security_operations - main security structure
180 * Security module identifier.
183 * A string that acts as a unique identifeir for the LSM with max number
184 * of characters = SECURITY_NAME_MAX.
186 * Security hooks for program execution operations.
189 * Save security information in the bprm->security field, typically based
190 * on information about the bprm->file, for later use by the apply_creds
191 * hook. This hook may also optionally check permissions (e.g. for
192 * transitions between security domains).
193 * This hook may be called multiple times during a single execve, e.g. for
194 * interpreters. The hook can tell whether it has already been called by
195 * checking to see if @bprm->security is non-NULL. If so, then the hook
196 * may decide either to retain the security information saved earlier or
198 * @bprm contains the linux_binprm structure.
199 * Return 0 if the hook is successful and permission is granted.
200 * @bprm_check_security:
201 * This hook mediates the point when a search for a binary handler will
202 * begin. It allows a check the @bprm->security value which is set in the
203 * preceding set_creds call. The primary difference from set_creds is
204 * that the argv list and envp list are reliably available in @bprm. This
205 * hook may be called multiple times during a single execve; and in each
206 * pass set_creds is called first.
207 * @bprm contains the linux_binprm structure.
208 * Return 0 if the hook is successful and permission is granted.
209 * @bprm_committing_creds:
210 * Prepare to install the new security attributes of a process being
211 * transformed by an execve operation, based on the old credentials
212 * pointed to by @current->cred and the information set in @bprm->cred by
213 * the bprm_set_creds hook. @bprm points to the linux_binprm structure.
214 * This hook is a good place to perform state changes on the process such
215 * as closing open file descriptors to which access will no longer be
216 * granted when the attributes are changed. This is called immediately
217 * before commit_creds().
218 * @bprm_committed_creds:
219 * Tidy up after the installation of the new security attributes of a
220 * process being transformed by an execve operation. The new credentials
221 * have, by this point, been set to @current->cred. @bprm points to the
222 * linux_binprm structure. This hook is a good place to perform state
223 * changes on the process such as clearing out non-inheritable signal
224 * state. This is called immediately after commit_creds().
226 * Return a boolean value (0 or 1) indicating whether a "secure exec"
227 * is required. The flag is passed in the auxiliary table
228 * on the initial stack to the ELF interpreter to indicate whether libc
229 * should enable secure mode.
230 * @bprm contains the linux_binprm structure.
232 * Security hooks for filesystem operations.
234 * @sb_alloc_security:
235 * Allocate and attach a security structure to the sb->s_security field.
236 * The s_security field is initialized to NULL when the structure is
238 * @sb contains the super_block structure to be modified.
239 * Return 0 if operation was successful.
241 * Deallocate and clear the sb->s_security field.
242 * @sb contains the super_block structure to be modified.
244 * Check permission before obtaining filesystem statistics for the @mnt
246 * @dentry is a handle on the superblock for the filesystem.
247 * Return 0 if permission is granted.
249 * Check permission before an object specified by @dev_name is mounted on
250 * the mount point named by @nd. For an ordinary mount, @dev_name
251 * identifies a device if the file system type requires a device. For a
252 * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a
253 * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
254 * pathname of the object being mounted.
255 * @dev_name contains the name for object being mounted.
256 * @path contains the path for mount point object.
257 * @type contains the filesystem type.
258 * @flags contains the mount flags.
259 * @data contains the filesystem-specific data.
260 * Return 0 if permission is granted.
262 * Allow mount option data to be copied prior to parsing by the filesystem,
263 * so that the security module can extract security-specific mount
264 * options cleanly (a filesystem may modify the data e.g. with strsep()).
265 * This also allows the original mount data to be stripped of security-
266 * specific options to avoid having to make filesystems aware of them.
267 * @type the type of filesystem being mounted.
268 * @orig the original mount data copied from userspace.
269 * @copy copied data which will be passed to the security module.
270 * Returns 0 if the copy was successful.
272 * Check permission before the @mnt file system is unmounted.
273 * @mnt contains the mounted file system.
274 * @flags contains the unmount flags, e.g. MNT_FORCE.
275 * Return 0 if permission is granted.
277 * Check permission before pivoting the root filesystem.
278 * @old_path contains the path for the new location of the current root (put_old).
279 * @new_path contains the path for the new root (new_root).
280 * Return 0 if permission is granted.
282 * Set the security relevant mount options used for a superblock
283 * @sb the superblock to set security mount options for
284 * @opts binary data structure containing all lsm mount data
285 * @sb_clone_mnt_opts:
286 * Copy all security options from a given superblock to another
287 * @oldsb old superblock which contain information to clone
288 * @newsb new superblock which needs filled in
289 * @sb_parse_opts_str:
290 * Parse a string of security data filling in the opts structure
291 * @options string containing all mount options known by the LSM
292 * @opts binary data structure usable by the LSM
294 * Security hooks for inode operations.
296 * @inode_alloc_security:
297 * Allocate and attach a security structure to @inode->i_security. The
298 * i_security field is initialized to NULL when the inode structure is
300 * @inode contains the inode structure.
301 * Return 0 if operation was successful.
302 * @inode_free_security:
303 * @inode contains the inode structure.
304 * Deallocate the inode security structure and set @inode->i_security to
306 * @inode_init_security:
307 * Obtain the security attribute name suffix and value to set on a newly
308 * created inode and set up the incore security field for the new inode.
309 * This hook is called by the fs code as part of the inode creation
310 * transaction and provides for atomic labeling of the inode, unlike
311 * the post_create/mkdir/... hooks called by the VFS. The hook function
312 * is expected to allocate the name and value via kmalloc, with the caller
313 * being responsible for calling kfree after using them.
314 * If the security module does not use security attributes or does
315 * not wish to put a security attribute on this particular inode,
316 * then it should return -EOPNOTSUPP to skip this processing.
317 * @inode contains the inode structure of the newly created inode.
318 * @dir contains the inode structure of the parent directory.
319 * @name will be set to the allocated name suffix (e.g. selinux).
320 * @value will be set to the allocated attribute value.
321 * @len will be set to the length of the value.
322 * Returns 0 if @name and @value have been successfully set,
323 * -EOPNOTSUPP if no security attribute is needed, or
324 * -ENOMEM on memory allocation failure.
326 * Check permission to create a regular file.
327 * @dir contains inode structure of the parent of the new file.
328 * @dentry contains the dentry structure for the file to be created.
329 * @mode contains the file mode of the file to be created.
330 * Return 0 if permission is granted.
332 * Check permission before creating a new hard link to a file.
333 * @old_dentry contains the dentry structure for an existing link to the file.
334 * @dir contains the inode structure of the parent directory of the new link.
335 * @new_dentry contains the dentry structure for the new link.
336 * Return 0 if permission is granted.
338 * Check permission before creating a new hard link to a file.
339 * @old_dentry contains the dentry structure for an existing link
341 * @new_dir contains the path structure of the parent directory of
343 * @new_dentry contains the dentry structure for the new link.
344 * Return 0 if permission is granted.
346 * Check the permission to remove a hard link to a file.
347 * @dir contains the inode structure of parent directory of the file.
348 * @dentry contains the dentry structure for file to be unlinked.
349 * Return 0 if permission is granted.
351 * Check the permission to remove a hard link to a file.
352 * @dir contains the path structure of parent directory of the file.
353 * @dentry contains the dentry structure for file to be unlinked.
354 * Return 0 if permission is granted.
356 * Check the permission to create a symbolic link to a file.
357 * @dir contains the inode structure of parent directory of the symbolic link.
358 * @dentry contains the dentry structure of the symbolic link.
359 * @old_name contains the pathname of file.
360 * Return 0 if permission is granted.
362 * Check the permission to create a symbolic link to a file.
363 * @dir contains the path structure of parent directory of
365 * @dentry contains the dentry structure of the symbolic link.
366 * @old_name contains the pathname of file.
367 * Return 0 if permission is granted.
369 * Check permissions to create a new directory in the existing directory
370 * associated with inode strcture @dir.
371 * @dir containst the inode structure of parent of the directory to be created.
372 * @dentry contains the dentry structure of new directory.
373 * @mode contains the mode of new directory.
374 * Return 0 if permission is granted.
376 * Check permissions to create a new directory in the existing directory
377 * associated with path strcture @path.
378 * @dir containst the path structure of parent of the directory
380 * @dentry contains the dentry structure of new directory.
381 * @mode contains the mode of new directory.
382 * Return 0 if permission is granted.
384 * Check the permission to remove a directory.
385 * @dir contains the inode structure of parent of the directory to be removed.
386 * @dentry contains the dentry structure of directory to be removed.
387 * Return 0 if permission is granted.
389 * Check the permission to remove a directory.
390 * @dir contains the path structure of parent of the directory to be
392 * @dentry contains the dentry structure of directory to be removed.
393 * Return 0 if permission is granted.
395 * Check permissions when creating a special file (or a socket or a fifo
396 * file created via the mknod system call). Note that if mknod operation
397 * is being done for a regular file, then the create hook will be called
399 * @dir contains the inode structure of parent of the new file.
400 * @dentry contains the dentry structure of the new file.
401 * @mode contains the mode of the new file.
402 * @dev contains the device number.
403 * Return 0 if permission is granted.
405 * Check permissions when creating a file. Note that this hook is called
406 * even if mknod operation is being done for a regular file.
407 * @dir contains the path structure of parent of the new file.
408 * @dentry contains the dentry structure of the new file.
409 * @mode contains the mode of the new file.
410 * @dev contains the undecoded device number. Use new_decode_dev() to get
411 * the decoded device number.
412 * Return 0 if permission is granted.
414 * Check for permission to rename a file or directory.
415 * @old_dir contains the inode structure for parent of the old link.
416 * @old_dentry contains the dentry structure of the old link.
417 * @new_dir contains the inode structure for parent of the new link.
418 * @new_dentry contains the dentry structure of the new link.
419 * Return 0 if permission is granted.
421 * Check for permission to rename a file or directory.
422 * @old_dir contains the path structure for parent of the old link.
423 * @old_dentry contains the dentry structure of the old link.
424 * @new_dir contains the path structure for parent of the new link.
425 * @new_dentry contains the dentry structure of the new link.
426 * Return 0 if permission is granted.
428 * Check for permission to change DAC's permission of a file or directory.
429 * @dentry contains the dentry structure.
430 * @mnt contains the vfsmnt structure.
431 * @mode contains DAC's mode.
432 * Return 0 if permission is granted.
434 * Check for permission to change owner/group of a file or directory.
435 * @path contains the path structure.
436 * @uid contains new owner's ID.
437 * @gid contains new group's ID.
438 * Return 0 if permission is granted.
440 * Check for permission to change root directory.
441 * @path contains the path structure.
442 * Return 0 if permission is granted.
444 * Check the permission to read the symbolic link.
445 * @dentry contains the dentry structure for the file link.
446 * Return 0 if permission is granted.
447 * @inode_follow_link:
448 * Check permission to follow a symbolic link when looking up a pathname.
449 * @dentry contains the dentry structure for the link.
450 * @nd contains the nameidata structure for the parent directory.
451 * Return 0 if permission is granted.
453 * Check permission before accessing an inode. This hook is called by the
454 * existing Linux permission function, so a security module can use it to
455 * provide additional checking for existing Linux permission checks.
456 * Notice that this hook is called when a file is opened (as well as many
457 * other operations), whereas the file_security_ops permission hook is
458 * called when the actual read/write operations are performed.
459 * @inode contains the inode structure to check.
460 * @mask contains the permission mask.
461 * @nd contains the nameidata (may be NULL).
462 * Return 0 if permission is granted.
464 * Check permission before setting file attributes. Note that the kernel
465 * call to notify_change is performed from several locations, whenever
466 * file attributes change (such as when a file is truncated, chown/chmod
467 * operations, transferring disk quotas, etc).
468 * @dentry contains the dentry structure for the file.
469 * @attr is the iattr structure containing the new file attributes.
470 * Return 0 if permission is granted.
472 * Check permission before truncating a file.
473 * @path contains the path structure for the file.
474 * @length is the new length of the file.
475 * @time_attrs is the flags passed to do_truncate().
476 * Return 0 if permission is granted.
478 * Check permission before obtaining file attributes.
479 * @mnt is the vfsmount where the dentry was looked up
480 * @dentry contains the dentry structure for the file.
481 * Return 0 if permission is granted.
483 * Check permission before setting the extended attributes
484 * @value identified by @name for @dentry.
485 * Return 0 if permission is granted.
486 * @inode_post_setxattr:
487 * Update inode security field after successful setxattr operation.
488 * @value identified by @name for @dentry.
490 * Check permission before obtaining the extended attributes
491 * identified by @name for @dentry.
492 * Return 0 if permission is granted.
494 * Check permission before obtaining the list of extended attribute
496 * Return 0 if permission is granted.
497 * @inode_removexattr:
498 * Check permission before removing the extended attribute
499 * identified by @name for @dentry.
500 * Return 0 if permission is granted.
501 * @inode_getsecurity:
502 * Retrieve a copy of the extended attribute representation of the
503 * security label associated with @name for @inode via @buffer. Note that
504 * @name is the remainder of the attribute name after the security prefix
505 * has been removed. @alloc is used to specify of the call should return a
506 * value via the buffer or just the value length Return size of buffer on
508 * @inode_setsecurity:
509 * Set the security label associated with @name for @inode from the
510 * extended attribute value @value. @size indicates the size of the
511 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
512 * Note that @name is the remainder of the attribute name after the
513 * security. prefix has been removed.
514 * Return 0 on success.
515 * @inode_listsecurity:
516 * Copy the extended attribute names for the security labels
517 * associated with @inode into @buffer. The maximum size of @buffer
518 * is specified by @buffer_size. @buffer may be NULL to request
519 * the size of the buffer required.
520 * Returns number of bytes used/required on success.
521 * @inode_need_killpriv:
522 * Called when an inode has been changed.
523 * @dentry is the dentry being changed.
524 * Return <0 on error to abort the inode change operation.
525 * Return 0 if inode_killpriv does not need to be called.
526 * Return >0 if inode_killpriv does need to be called.
528 * The setuid bit is being removed. Remove similar security labels.
529 * Called with the dentry->d_inode->i_mutex held.
530 * @dentry is the dentry being changed.
531 * Return 0 on success. If error is returned, then the operation
532 * causing setuid bit removal is failed.
534 * Get the secid associated with the node.
535 * @inode contains a pointer to the inode.
536 * @secid contains a pointer to the location where result will be saved.
537 * In case of failure, @secid will be set to zero.
539 * Security hooks for file operations
542 * Check file permissions before accessing an open file. This hook is
543 * called by various operations that read or write files. A security
544 * module can use this hook to perform additional checking on these
545 * operations, e.g. to revalidate permissions on use to support privilege
546 * bracketing or policy changes. Notice that this hook is used when the
547 * actual read/write operations are performed, whereas the
548 * inode_security_ops hook is called when a file is opened (as well as
549 * many other operations).
550 * Caveat: Although this hook can be used to revalidate permissions for
551 * various system call operations that read or write files, it does not
552 * address the revalidation of permissions for memory-mapped files.
553 * Security modules must handle this separately if they need such
555 * @file contains the file structure being accessed.
556 * @mask contains the requested permissions.
557 * Return 0 if permission is granted.
558 * @file_alloc_security:
559 * Allocate and attach a security structure to the file->f_security field.
560 * The security field is initialized to NULL when the structure is first
562 * @file contains the file structure to secure.
563 * Return 0 if the hook is successful and permission is granted.
564 * @file_free_security:
565 * Deallocate and free any security structures stored in file->f_security.
566 * @file contains the file structure being modified.
568 * @file contains the file structure.
569 * @cmd contains the operation to perform.
570 * @arg contains the operational arguments.
571 * Check permission for an ioctl operation on @file. Note that @arg can
572 * sometimes represents a user space pointer; in other cases, it may be a
573 * simple integer value. When @arg represents a user space pointer, it
574 * should never be used by the security module.
575 * Return 0 if permission is granted.
577 * Check permissions for a mmap operation. The @file may be NULL, e.g.
578 * if mapping anonymous memory.
579 * @file contains the file structure for file to map (may be NULL).
580 * @reqprot contains the protection requested by the application.
581 * @prot contains the protection that will be applied by the kernel.
582 * @flags contains the operational flags.
583 * Return 0 if permission is granted.
585 * Check permissions before changing memory access permissions.
586 * @vma contains the memory region to modify.
587 * @reqprot contains the protection requested by the application.
588 * @prot contains the protection that will be applied by the kernel.
589 * Return 0 if permission is granted.
591 * Check permission before performing file locking operations.
592 * Note: this hook mediates both flock and fcntl style locks.
593 * @file contains the file structure.
594 * @cmd contains the posix-translated lock operation to perform
595 * (e.g. F_RDLCK, F_WRLCK).
596 * Return 0 if permission is granted.
598 * Check permission before allowing the file operation specified by @cmd
599 * from being performed on the file @file. Note that @arg can sometimes
600 * represents a user space pointer; in other cases, it may be a simple
601 * integer value. When @arg represents a user space pointer, it should
602 * never be used by the security module.
603 * @file contains the file structure.
604 * @cmd contains the operation to be performed.
605 * @arg contains the operational arguments.
606 * Return 0 if permission is granted.
608 * Save owner security information (typically from current->security) in
609 * file->f_security for later use by the send_sigiotask hook.
610 * @file contains the file structure to update.
611 * Return 0 on success.
612 * @file_send_sigiotask:
613 * Check permission for the file owner @fown to send SIGIO or SIGURG to the
614 * process @tsk. Note that this hook is sometimes called from interrupt.
615 * Note that the fown_struct, @fown, is never outside the context of a
616 * struct file, so the file structure (and associated security information)
617 * can always be obtained:
618 * container_of(fown, struct file, f_owner)
619 * @tsk contains the structure of task receiving signal.
620 * @fown contains the file owner information.
621 * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
622 * Return 0 if permission is granted.
624 * This hook allows security modules to control the ability of a process
625 * to receive an open file descriptor via socket IPC.
626 * @file contains the file structure being received.
627 * Return 0 if permission is granted.
629 * Security hook for dentry
632 * Save open-time permission checking state for later use upon
633 * file_permission, and recheck access if anything has changed
634 * since inode_permission.
636 * Security hooks for task operations.
639 * Check permission before creating a child process. See the clone(2)
640 * manual page for definitions of the @clone_flags.
641 * @clone_flags contains the flags indicating what should be shared.
642 * Return 0 if permission is granted.
644 * @cred points to the credentials.
645 * @gfp indicates the atomicity of any memory allocations.
646 * Only allocate sufficient memory and attach to @cred such that
647 * cred_transfer() will not get ENOMEM.
649 * @cred points to the credentials.
650 * Deallocate and clear the cred->security field in a set of credentials.
652 * @new points to the new credentials.
653 * @old points to the original credentials.
654 * @gfp indicates the atomicity of any memory allocations.
655 * Prepare a new set of credentials by copying the data from the old set.
657 * @new points to the new credentials.
658 * @old points to the original credentials.
659 * Transfer data from original creds to new creds
661 * Set the credentials for a kernel service to act as (subjective context).
662 * @new points to the credentials to be modified.
663 * @secid specifies the security ID to be set
664 * The current task must be the one that nominated @secid.
665 * Return 0 if successful.
666 * @kernel_create_files_as:
667 * Set the file creation context in a set of credentials to be the same as
668 * the objective context of the specified inode.
669 * @new points to the credentials to be modified.
670 * @inode points to the inode to use as a reference.
671 * The current task must be the one that nominated @inode.
672 * Return 0 if successful.
673 * @kernel_module_request:
674 * Ability to trigger the kernel to automatically upcall to userspace for
675 * userspace to load a kernel module with the given name.
676 * @kmod_name name of the module requested by the kernel
677 * Return 0 if successful.
679 * Update the module's state after setting one or more of the user
680 * identity attributes of the current process. The @flags parameter
681 * indicates which of the set*uid system calls invoked this hook. If
682 * @new is the set of credentials that will be installed. Modifications
683 * should be made to this rather than to @current->cred.
684 * @old is the set of credentials that are being replaces
685 * @flags contains one of the LSM_SETID_* values.
686 * Return 0 on success.
688 * Check permission before setting the process group identifier of the
689 * process @p to @pgid.
690 * @p contains the task_struct for process being modified.
691 * @pgid contains the new pgid.
692 * Return 0 if permission is granted.
694 * Check permission before getting the process group identifier of the
696 * @p contains the task_struct for the process.
697 * Return 0 if permission is granted.
699 * Check permission before getting the session identifier of the process
701 * @p contains the task_struct for the process.
702 * Return 0 if permission is granted.
704 * Retrieve the security identifier of the process @p.
705 * @p contains the task_struct for the process and place is into @secid.
706 * In case of failure, @secid will be set to zero.
709 * Check permission before setting the nice value of @p to @nice.
710 * @p contains the task_struct of process.
711 * @nice contains the new nice value.
712 * Return 0 if permission is granted.
714 * Check permission before setting the ioprio value of @p to @ioprio.
715 * @p contains the task_struct of process.
716 * @ioprio contains the new ioprio value
717 * Return 0 if permission is granted.
719 * Check permission before getting the ioprio value of @p.
720 * @p contains the task_struct of process.
721 * Return 0 if permission is granted.
723 * Check permission before setting the resource limits of the current
724 * process for @resource to @new_rlim. The old resource limit values can
725 * be examined by dereferencing (current->signal->rlim + resource).
726 * @resource contains the resource whose limit is being set.
727 * @new_rlim contains the new limits for @resource.
728 * Return 0 if permission is granted.
729 * @task_setscheduler:
730 * Check permission before setting scheduling policy and/or parameters of
731 * process @p based on @policy and @lp.
732 * @p contains the task_struct for process.
733 * @policy contains the scheduling policy.
734 * @lp contains the scheduling parameters.
735 * Return 0 if permission is granted.
736 * @task_getscheduler:
737 * Check permission before obtaining scheduling information for process
739 * @p contains the task_struct for process.
740 * Return 0 if permission is granted.
742 * Check permission before moving memory owned by process @p.
743 * @p contains the task_struct for process.
744 * Return 0 if permission is granted.
746 * Check permission before sending signal @sig to @p. @info can be NULL,
747 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
748 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
749 * from the kernel and should typically be permitted.
750 * SIGIO signals are handled separately by the send_sigiotask hook in
752 * @p contains the task_struct for process.
753 * @info contains the signal information.
754 * @sig contains the signal value.
755 * @secid contains the sid of the process where the signal originated
756 * Return 0 if permission is granted.
758 * Check permission before allowing a process to reap a child process @p
759 * and collect its status information.
760 * @p contains the task_struct for process.
761 * Return 0 if permission is granted.
763 * Check permission before performing a process control operation on the
765 * @option contains the operation.
766 * @arg2 contains a argument.
767 * @arg3 contains a argument.
768 * @arg4 contains a argument.
769 * @arg5 contains a argument.
770 * Return -ENOSYS if no-one wanted to handle this op, any other value to
771 * cause prctl() to return immediately with that value.
773 * Set the security attributes for an inode based on an associated task's
774 * security attributes, e.g. for /proc/pid inodes.
775 * @p contains the task_struct for the task.
776 * @inode contains the inode structure for the inode.
778 * Security hooks for Netlink messaging.
781 * Save security information for a netlink message so that permission
782 * checking can be performed when the message is processed. The security
783 * information can be saved using the eff_cap field of the
784 * netlink_skb_parms structure. Also may be used to provide fine
785 * grained control over message transmission.
786 * @sk associated sock of task sending the message.,
787 * @skb contains the sk_buff structure for the netlink message.
788 * Return 0 if the information was successfully saved and message
789 * is allowed to be transmitted.
791 * Check permission before processing the received netlink message in
793 * @skb contains the sk_buff structure for the netlink message.
794 * @cap indicates the capability required
795 * Return 0 if permission is granted.
797 * Security hooks for Unix domain networking.
799 * @unix_stream_connect:
800 * Check permissions before establishing a Unix domain stream connection
801 * between @sock and @other.
802 * @sock contains the socket structure.
803 * @other contains the peer socket structure.
804 * Return 0 if permission is granted.
806 * Check permissions before connecting or sending datagrams from @sock to
808 * @sock contains the socket structure.
809 * @sock contains the peer socket structure.
810 * Return 0 if permission is granted.
812 * The @unix_stream_connect and @unix_may_send hooks were necessary because
813 * Linux provides an alternative to the conventional file name space for Unix
814 * domain sockets. Whereas binding and connecting to sockets in the file name
815 * space is mediated by the typical file permissions (and caught by the mknod
816 * and permission hooks in inode_security_ops), binding and connecting to
817 * sockets in the abstract name space is completely unmediated. Sufficient
818 * control of Unix domain sockets in the abstract name space isn't possible
819 * using only the socket layer hooks, since we need to know the actual target
820 * socket, which is not looked up until we are inside the af_unix code.
822 * Security hooks for socket operations.
825 * Check permissions prior to creating a new socket.
826 * @family contains the requested protocol family.
827 * @type contains the requested communications type.
828 * @protocol contains the requested protocol.
829 * @kern set to 1 if a kernel socket.
830 * Return 0 if permission is granted.
831 * @socket_post_create:
832 * This hook allows a module to update or allocate a per-socket security
833 * structure. Note that the security field was not added directly to the
834 * socket structure, but rather, the socket security information is stored
835 * in the associated inode. Typically, the inode alloc_security hook will
836 * allocate and and attach security information to
837 * sock->inode->i_security. This hook may be used to update the
838 * sock->inode->i_security field with additional information that wasn't
839 * available when the inode was allocated.
840 * @sock contains the newly created socket structure.
841 * @family contains the requested protocol family.
842 * @type contains the requested communications type.
843 * @protocol contains the requested protocol.
844 * @kern set to 1 if a kernel socket.
846 * Check permission before socket protocol layer bind operation is
847 * performed and the socket @sock is bound to the address specified in the
848 * @address parameter.
849 * @sock contains the socket structure.
850 * @address contains the address to bind to.
851 * @addrlen contains the length of address.
852 * Return 0 if permission is granted.
854 * Check permission before socket protocol layer connect operation
855 * attempts to connect socket @sock to a remote address, @address.
856 * @sock contains the socket structure.
857 * @address contains the address of remote endpoint.
858 * @addrlen contains the length of address.
859 * Return 0 if permission is granted.
861 * Check permission before socket protocol layer listen operation.
862 * @sock contains the socket structure.
863 * @backlog contains the maximum length for the pending connection queue.
864 * Return 0 if permission is granted.
866 * Check permission before accepting a new connection. Note that the new
867 * socket, @newsock, has been created and some information copied to it,
868 * but the accept operation has not actually been performed.
869 * @sock contains the listening socket structure.
870 * @newsock contains the newly created server socket for connection.
871 * Return 0 if permission is granted.
873 * Check permission before transmitting a message to another socket.
874 * @sock contains the socket structure.
875 * @msg contains the message to be transmitted.
876 * @size contains the size of message.
877 * Return 0 if permission is granted.
879 * Check permission before receiving a message from a socket.
880 * @sock contains the socket structure.
881 * @msg contains the message structure.
882 * @size contains the size of message structure.
883 * @flags contains the operational flags.
884 * Return 0 if permission is granted.
885 * @socket_getsockname:
886 * Check permission before the local address (name) of the socket object
887 * @sock is retrieved.
888 * @sock contains the socket structure.
889 * Return 0 if permission is granted.
890 * @socket_getpeername:
891 * Check permission before the remote address (name) of a socket object
892 * @sock is retrieved.
893 * @sock contains the socket structure.
894 * Return 0 if permission is granted.
895 * @socket_getsockopt:
896 * Check permissions before retrieving the options associated with socket
898 * @sock contains the socket structure.
899 * @level contains the protocol level to retrieve option from.
900 * @optname contains the name of option to retrieve.
901 * Return 0 if permission is granted.
902 * @socket_setsockopt:
903 * Check permissions before setting the options associated with socket
905 * @sock contains the socket structure.
906 * @level contains the protocol level to set options for.
907 * @optname contains the name of the option to set.
908 * Return 0 if permission is granted.
910 * Checks permission before all or part of a connection on the socket
911 * @sock is shut down.
912 * @sock contains the socket structure.
913 * @how contains the flag indicating how future sends and receives are handled.
914 * Return 0 if permission is granted.
915 * @socket_sock_rcv_skb:
916 * Check permissions on incoming network packets. This hook is distinct
917 * from Netfilter's IP input hooks since it is the first time that the
918 * incoming sk_buff @skb has been associated with a particular socket, @sk.
919 * Must not sleep inside this hook because some callers hold spinlocks.
920 * @sk contains the sock (not socket) associated with the incoming sk_buff.
921 * @skb contains the incoming network data.
922 * @socket_getpeersec_stream:
923 * This hook allows the security module to provide peer socket security
924 * state for unix or connected tcp sockets to userspace via getsockopt
925 * SO_GETPEERSEC. For tcp sockets this can be meaningful if the
926 * socket is associated with an ipsec SA.
927 * @sock is the local socket.
928 * @optval userspace memory where the security state is to be copied.
929 * @optlen userspace int where the module should copy the actual length
930 * of the security state.
931 * @len as input is the maximum length to copy to userspace provided
933 * Return 0 if all is well, otherwise, typical getsockopt return
935 * @socket_getpeersec_dgram:
936 * This hook allows the security module to provide peer socket security
937 * state for udp sockets on a per-packet basis to userspace via
938 * getsockopt SO_GETPEERSEC. The application must first have indicated
939 * the IP_PASSSEC option via getsockopt. It can then retrieve the
940 * security state returned by this hook for a packet via the SCM_SECURITY
941 * ancillary message type.
942 * @skb is the skbuff for the packet being queried
943 * @secdata is a pointer to a buffer in which to copy the security data
944 * @seclen is the maximum length for @secdata
945 * Return 0 on success, error on failure.
946 * @sk_alloc_security:
947 * Allocate and attach a security structure to the sk->sk_security field,
948 * which is used to copy security attributes between local stream sockets.
950 * Deallocate security structure.
951 * @sk_clone_security:
952 * Clone/copy security structure.
954 * Retrieve the LSM-specific secid for the sock to enable caching of network
957 * Sets the socket's isec sid to the sock's sid.
958 * @inet_conn_request:
959 * Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
961 * Sets the new child socket's sid to the openreq sid.
962 * @inet_conn_established:
963 * Sets the connection's peersid to the secmark on skb.
964 * @req_classify_flow:
965 * Sets the flow's sid to the openreq sid.
967 * Check permissions prior to creating a new TUN device.
968 * @tun_dev_post_create:
969 * This hook allows a module to update or allocate a per-socket security
971 * @sk contains the newly created sock structure.
973 * Check permissions prior to attaching to a persistent TUN device. This
974 * hook can also be used by the module to update any security state
975 * associated with the TUN device's sock structure.
976 * @sk contains the existing sock structure.
978 * Security hooks for XFRM operations.
980 * @xfrm_policy_alloc_security:
981 * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
982 * Database used by the XFRM system.
983 * @sec_ctx contains the security context information being provided by
984 * the user-level policy update program (e.g., setkey).
985 * Allocate a security structure to the xp->security field; the security
986 * field is initialized to NULL when the xfrm_policy is allocated.
987 * Return 0 if operation was successful (memory to allocate, legal context)
988 * @xfrm_policy_clone_security:
989 * @old_ctx contains an existing xfrm_sec_ctx.
990 * @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
991 * Allocate a security structure in new_ctxp that contains the
992 * information from the old_ctx structure.
993 * Return 0 if operation was successful (memory to allocate).
994 * @xfrm_policy_free_security:
995 * @ctx contains the xfrm_sec_ctx
996 * Deallocate xp->security.
997 * @xfrm_policy_delete_security:
998 * @ctx contains the xfrm_sec_ctx.
999 * Authorize deletion of xp->security.
1000 * @xfrm_state_alloc_security:
1001 * @x contains the xfrm_state being added to the Security Association
1002 * Database by the XFRM system.
1003 * @sec_ctx contains the security context information being provided by
1004 * the user-level SA generation program (e.g., setkey or racoon).
1005 * @secid contains the secid from which to take the mls portion of the context.
1006 * Allocate a security structure to the x->security field; the security
1007 * field is initialized to NULL when the xfrm_state is allocated. Set the
1008 * context to correspond to either sec_ctx or polsec, with the mls portion
1009 * taken from secid in the latter case.
1010 * Return 0 if operation was successful (memory to allocate, legal context).
1011 * @xfrm_state_free_security:
1012 * @x contains the xfrm_state.
1013 * Deallocate x->security.
1014 * @xfrm_state_delete_security:
1015 * @x contains the xfrm_state.
1016 * Authorize deletion of x->security.
1017 * @xfrm_policy_lookup:
1018 * @ctx contains the xfrm_sec_ctx for which the access control is being
1020 * @fl_secid contains the flow security label that is used to authorize
1021 * access to the policy xp.
1022 * @dir contains the direction of the flow (input or output).
1023 * Check permission when a flow selects a xfrm_policy for processing
1024 * XFRMs on a packet. The hook is called when selecting either a
1025 * per-socket policy or a generic xfrm policy.
1026 * Return 0 if permission is granted, -ESRCH otherwise, or -errno
1028 * @xfrm_state_pol_flow_match:
1029 * @x contains the state to match.
1030 * @xp contains the policy to check for a match.
1031 * @fl contains the flow to check for a match.
1032 * Return 1 if there is a match.
1033 * @xfrm_decode_session:
1034 * @skb points to skb to decode.
1035 * @secid points to the flow key secid to set.
1036 * @ckall says if all xfrms used should be checked for same secid.
1037 * Return 0 if ckall is zero or all xfrms used have the same secid.
1039 * Security hooks affecting all Key Management operations
1042 * Permit allocation of a key and assign security data. Note that key does
1043 * not have a serial number assigned at this point.
1044 * @key points to the key.
1045 * @flags is the allocation flags
1046 * Return 0 if permission is granted, -ve error otherwise.
1048 * Notification of destruction; free security data.
1049 * @key points to the key.
1052 * See whether a specific operational right is granted to a process on a
1054 * @key_ref refers to the key (key pointer + possession attribute bit).
1055 * @cred points to the credentials to provide the context against which to
1056 * evaluate the security data on the key.
1057 * @perm describes the combination of permissions required of this key.
1058 * Return 1 if permission granted, 0 if permission denied and -ve it the
1059 * normal permissions model should be effected.
1061 * Get a textual representation of the security context attached to a key
1062 * for the purposes of honouring KEYCTL_GETSECURITY. This function
1063 * allocates the storage for the NUL-terminated string and the caller
1065 * @key points to the key to be queried.
1066 * @_buffer points to a pointer that should be set to point to the
1067 * resulting string (if no label or an error occurs).
1068 * Return the length of the string (including terminating NUL) or -ve if
1070 * May also return 0 (and a NULL buffer pointer) if there is no label.
1072 * Security hooks affecting all System V IPC operations.
1075 * Check permissions for access to IPC
1076 * @ipcp contains the kernel IPC permission structure
1077 * @flag contains the desired (requested) permission set
1078 * Return 0 if permission is granted.
1080 * Get the secid associated with the ipc object.
1081 * @ipcp contains the kernel IPC permission structure.
1082 * @secid contains a pointer to the location where result will be saved.
1083 * In case of failure, @secid will be set to zero.
1085 * Security hooks for individual messages held in System V IPC message queues
1086 * @msg_msg_alloc_security:
1087 * Allocate and attach a security structure to the msg->security field.
1088 * The security field is initialized to NULL when the structure is first
1090 * @msg contains the message structure to be modified.
1091 * Return 0 if operation was successful and permission is granted.
1092 * @msg_msg_free_security:
1093 * Deallocate the security structure for this message.
1094 * @msg contains the message structure to be modified.
1096 * Security hooks for System V IPC Message Queues
1098 * @msg_queue_alloc_security:
1099 * Allocate and attach a security structure to the
1100 * msq->q_perm.security field. The security field is initialized to
1101 * NULL when the structure is first created.
1102 * @msq contains the message queue structure to be modified.
1103 * Return 0 if operation was successful and permission is granted.
1104 * @msg_queue_free_security:
1105 * Deallocate security structure for this message queue.
1106 * @msq contains the message queue structure to be modified.
1107 * @msg_queue_associate:
1108 * Check permission when a message queue is requested through the
1109 * msgget system call. This hook is only called when returning the
1110 * message queue identifier for an existing message queue, not when a
1111 * new message queue is created.
1112 * @msq contains the message queue to act upon.
1113 * @msqflg contains the operation control flags.
1114 * Return 0 if permission is granted.
1115 * @msg_queue_msgctl:
1116 * Check permission when a message control operation specified by @cmd
1117 * is to be performed on the message queue @msq.
1118 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
1119 * @msq contains the message queue to act upon. May be NULL.
1120 * @cmd contains the operation to be performed.
1121 * Return 0 if permission is granted.
1122 * @msg_queue_msgsnd:
1123 * Check permission before a message, @msg, is enqueued on the message
1125 * @msq contains the message queue to send message to.
1126 * @msg contains the message to be enqueued.
1127 * @msqflg contains operational flags.
1128 * Return 0 if permission is granted.
1129 * @msg_queue_msgrcv:
1130 * Check permission before a message, @msg, is removed from the message
1131 * queue, @msq. The @target task structure contains a pointer to the
1132 * process that will be receiving the message (not equal to the current
1133 * process when inline receives are being performed).
1134 * @msq contains the message queue to retrieve message from.
1135 * @msg contains the message destination.
1136 * @target contains the task structure for recipient process.
1137 * @type contains the type of message requested.
1138 * @mode contains the operational flags.
1139 * Return 0 if permission is granted.
1141 * Security hooks for System V Shared Memory Segments
1143 * @shm_alloc_security:
1144 * Allocate and attach a security structure to the shp->shm_perm.security
1145 * field. The security field is initialized to NULL when the structure is
1147 * @shp contains the shared memory structure to be modified.
1148 * Return 0 if operation was successful and permission is granted.
1149 * @shm_free_security:
1150 * Deallocate the security struct for this memory segment.
1151 * @shp contains the shared memory structure to be modified.
1153 * Check permission when a shared memory region is requested through the
1154 * shmget system call. This hook is only called when returning the shared
1155 * memory region identifier for an existing region, not when a new shared
1156 * memory region is created.
1157 * @shp contains the shared memory structure to be modified.
1158 * @shmflg contains the operation control flags.
1159 * Return 0 if permission is granted.
1161 * Check permission when a shared memory control operation specified by
1162 * @cmd is to be performed on the shared memory region @shp.
1163 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1164 * @shp contains shared memory structure to be modified.
1165 * @cmd contains the operation to be performed.
1166 * Return 0 if permission is granted.
1168 * Check permissions prior to allowing the shmat system call to attach the
1169 * shared memory segment @shp to the data segment of the calling process.
1170 * The attaching address is specified by @shmaddr.
1171 * @shp contains the shared memory structure to be modified.
1172 * @shmaddr contains the address to attach memory region to.
1173 * @shmflg contains the operational flags.
1174 * Return 0 if permission is granted.
1176 * Security hooks for System V Semaphores
1178 * @sem_alloc_security:
1179 * Allocate and attach a security structure to the sma->sem_perm.security
1180 * field. The security field is initialized to NULL when the structure is
1182 * @sma contains the semaphore structure
1183 * Return 0 if operation was successful and permission is granted.
1184 * @sem_free_security:
1185 * deallocate security struct for this semaphore
1186 * @sma contains the semaphore structure.
1188 * Check permission when a semaphore is requested through the semget
1189 * system call. This hook is only called when returning the semaphore
1190 * identifier for an existing semaphore, not when a new one must be
1192 * @sma contains the semaphore structure.
1193 * @semflg contains the operation control flags.
1194 * Return 0 if permission is granted.
1196 * Check permission when a semaphore operation specified by @cmd is to be
1197 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
1198 * IPC_INFO or SEM_INFO.
1199 * @sma contains the semaphore structure. May be NULL.
1200 * @cmd contains the operation to be performed.
1201 * Return 0 if permission is granted.
1203 * Check permissions before performing operations on members of the
1204 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1206 * @sma contains the semaphore structure.
1207 * @sops contains the operations to perform.
1208 * @nsops contains the number of operations to perform.
1209 * @alter contains the flag indicating whether changes are to be made.
1210 * Return 0 if permission is granted.
1212 * @ptrace_access_check:
1213 * Check permission before allowing the current process to trace the
1215 * Security modules may also want to perform a process tracing check
1216 * during an execve in the set_security or apply_creds hooks of
1217 * tracing check during an execve in the bprm_set_creds hook of
1218 * binprm_security_ops if the process is being traced and its security
1219 * attributes would be changed by the execve.
1220 * @child contains the task_struct structure for the target process.
1221 * @mode contains the PTRACE_MODE flags indicating the form of access.
1222 * Return 0 if permission is granted.
1224 * Check that the @parent process has sufficient permission to trace the
1225 * current process before allowing the current process to present itself
1226 * to the @parent process for tracing.
1227 * The parent process will still have to undergo the ptrace_access_check
1228 * checks before it is allowed to trace this one.
1229 * @parent contains the task_struct structure for debugger process.
1230 * Return 0 if permission is granted.
1232 * Get the @effective, @inheritable, and @permitted capability sets for
1233 * the @target process. The hook may also perform permission checking to
1234 * determine if the current process is allowed to see the capability sets
1235 * of the @target process.
1236 * @target contains the task_struct structure for target process.
1237 * @effective contains the effective capability set.
1238 * @inheritable contains the inheritable capability set.
1239 * @permitted contains the permitted capability set.
1240 * Return 0 if the capability sets were successfully obtained.
1242 * Set the @effective, @inheritable, and @permitted capability sets for
1243 * the current process.
1244 * @new contains the new credentials structure for target process.
1245 * @old contains the current credentials structure for target process.
1246 * @effective contains the effective capability set.
1247 * @inheritable contains the inheritable capability set.
1248 * @permitted contains the permitted capability set.
1249 * Return 0 and update @new if permission is granted.
1251 * Check whether the @tsk process has the @cap capability in the indicated
1253 * @tsk contains the task_struct for the process.
1254 * @cred contains the credentials to use.
1255 * @cap contains the capability <include/linux/capability.h>.
1256 * @audit: Whether to write an audit message or not
1257 * Return 0 if the capability is granted for @tsk.
1259 * Check permission before accessing the @table sysctl variable in the
1260 * manner specified by @op.
1261 * @table contains the ctl_table structure for the sysctl variable.
1262 * @op contains the operation (001 = search, 002 = write, 004 = read).
1263 * Return 0 if permission is granted.
1265 * Check permission before accessing the kernel message ring or changing
1266 * logging to the console.
1267 * See the syslog(2) manual page for an explanation of the @type values.
1268 * @type contains the type of action.
1269 * @from_file indicates the context of action (if it came from /proc).
1270 * Return 0 if permission is granted.
1272 * Check permission to change the system time.
1273 * struct timespec and timezone are defined in include/linux/time.h
1274 * @ts contains new time
1275 * @tz contains new timezone
1276 * Return 0 if permission is granted.
1277 * @vm_enough_memory:
1278 * Check permissions for allocating a new virtual mapping.
1279 * @mm contains the mm struct it is being added to.
1280 * @pages contains the number of pages.
1281 * Return 0 if permission is granted.
1284 * Convert secid to security context.
1285 * @secid contains the security ID.
1286 * @secdata contains the pointer that stores the converted security context.
1288 * Convert security context to secid.
1289 * @secid contains the pointer to the generated security ID.
1290 * @secdata contains the security context.
1293 * Release the security context.
1294 * @secdata contains the security context.
1295 * @seclen contains the length of the security context.
1297 * Security hooks for Audit
1300 * Allocate and initialize an LSM audit rule structure.
1301 * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
1302 * @op contains the operator the rule uses.
1303 * @rulestr contains the context where the rule will be applied to.
1304 * @lsmrule contains a pointer to receive the result.
1305 * Return 0 if @lsmrule has been successfully set,
1306 * -EINVAL in case of an invalid rule.
1308 * @audit_rule_known:
1309 * Specifies whether given @rule contains any fields related to current LSM.
1310 * @rule contains the audit rule of interest.
1311 * Return 1 in case of relation found, 0 otherwise.
1313 * @audit_rule_match:
1314 * Determine if given @secid matches a rule previously approved
1315 * by @audit_rule_known.
1316 * @secid contains the security id in question.
1317 * @field contains the field which relates to current LSM.
1318 * @op contains the operator that will be used for matching.
1319 * @rule points to the audit rule that will be checked against.
1320 * @actx points to the audit context associated with the check.
1321 * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
1324 * Deallocate the LSM audit rule structure previously allocated by
1326 * @rule contains the allocated rule
1328 * @inode_notifysecctx:
1329 * Notify the security module of what the security context of an inode
1330 * should be. Initializes the incore security context managed by the
1331 * security module for this inode. Example usage: NFS client invokes
1332 * this hook to initialize the security context in its incore inode to the
1333 * value provided by the server for the file when the server returned the
1334 * file's attributes to the client.
1336 * Must be called with inode->i_mutex locked.
1338 * @inode we wish to set the security context of.
1339 * @ctx contains the string which we wish to set in the inode.
1340 * @ctxlen contains the length of @ctx.
1343 * Change the security context of an inode. Updates the
1344 * incore security context managed by the security module and invokes the
1345 * fs code as needed (via __vfs_setxattr_noperm) to update any backing
1346 * xattrs that represent the context. Example usage: NFS server invokes
1347 * this hook to change the security context in its incore inode and on the
1348 * backing filesystem to a value provided by the client on a SETATTR
1351 * Must be called with inode->i_mutex locked.
1353 * @dentry contains the inode we wish to set the security context of.
1354 * @ctx contains the string which we wish to set in the inode.
1355 * @ctxlen contains the length of @ctx.
1358 * Returns a string containing all relavent security context information
1360 * @inode we wish to set the security context of.
1361 * @ctx is a pointer in which to place the allocated security context.
1362 * @ctxlen points to the place to put the length of @ctx.
1363 * This is the main security structure.
1365 struct security_operations {
1366 char name[SECURITY_NAME_MAX + 1];
1368 int (*ptrace_access_check) (struct task_struct *child, unsigned int mode);
1369 int (*ptrace_traceme) (struct task_struct *parent);
1370 int (*capget) (struct task_struct *target,
1371 kernel_cap_t *effective,
1372 kernel_cap_t *inheritable, kernel_cap_t *permitted);
1373 int (*capset) (struct cred *new,
1374 const struct cred *old,
1375 const kernel_cap_t *effective,
1376 const kernel_cap_t *inheritable,
1377 const kernel_cap_t *permitted);
1378 int (*capable) (struct task_struct *tsk, const struct cred *cred,
1379 int cap, int audit);
1380 int (*sysctl) (struct ctl_table *table, int op);
1381 int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
1382 int (*quota_on) (struct dentry *dentry);
1383 int (*syslog) (int type, bool from_file);
1384 int (*settime) (struct timespec *ts, struct timezone *tz);
1385 int (*vm_enough_memory) (struct mm_struct *mm, long pages);
1387 int (*bprm_set_creds) (struct linux_binprm *bprm);
1388 int (*bprm_check_security) (struct linux_binprm *bprm);
1389 int (*bprm_secureexec) (struct linux_binprm *bprm);
1390 void (*bprm_committing_creds) (struct linux_binprm *bprm);
1391 void (*bprm_committed_creds) (struct linux_binprm *bprm);
1393 int (*sb_alloc_security) (struct super_block *sb);
1394 void (*sb_free_security) (struct super_block *sb);
1395 int (*sb_copy_data) (char *orig, char *copy);
1396 int (*sb_kern_mount) (struct super_block *sb, int flags, void *data);
1397 int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
1398 int (*sb_statfs) (struct dentry *dentry);
1399 int (*sb_mount) (char *dev_name, struct path *path,
1400 char *type, unsigned long flags, void *data);
1401 int (*sb_umount) (struct vfsmount *mnt, int flags);
1402 int (*sb_pivotroot) (struct path *old_path,
1403 struct path *new_path);
1404 int (*sb_set_mnt_opts) (struct super_block *sb,
1405 struct security_mnt_opts *opts);
1406 void (*sb_clone_mnt_opts) (const struct super_block *oldsb,
1407 struct super_block *newsb);
1408 int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
1410 #ifdef CONFIG_SECURITY_PATH
1411 int (*path_unlink) (struct path *dir, struct dentry *dentry);
1412 int (*path_mkdir) (struct path *dir, struct dentry *dentry, int mode);
1413 int (*path_rmdir) (struct path *dir, struct dentry *dentry);
1414 int (*path_mknod) (struct path *dir, struct dentry *dentry, int mode,
1416 int (*path_truncate) (struct path *path, loff_t length,
1417 unsigned int time_attrs);
1418 int (*path_symlink) (struct path *dir, struct dentry *dentry,
1419 const char *old_name);
1420 int (*path_link) (struct dentry *old_dentry, struct path *new_dir,
1421 struct dentry *new_dentry);
1422 int (*path_rename) (struct path *old_dir, struct dentry *old_dentry,
1423 struct path *new_dir, struct dentry *new_dentry);
1424 int (*path_chmod) (struct dentry *dentry, struct vfsmount *mnt,
1426 int (*path_chown) (struct path *path, uid_t uid, gid_t gid);
1427 int (*path_chroot) (struct path *path);
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 int (*inode_setxattr) (struct dentry *dentry, const char *name,
1453 const void *value, size_t size, int flags);
1454 void (*inode_post_setxattr) (struct dentry *dentry, const char *name,
1455 const void *value, size_t size, int flags);
1456 int (*inode_getxattr) (struct dentry *dentry, const char *name);
1457 int (*inode_listxattr) (struct dentry *dentry);
1458 int (*inode_removexattr) (struct dentry *dentry, const char *name);
1459 int (*inode_need_killpriv) (struct dentry *dentry);
1460 int (*inode_killpriv) (struct dentry *dentry);
1461 int (*inode_getsecurity) (const struct inode *inode, const char *name, void **buffer, bool alloc);
1462 int (*inode_setsecurity) (struct inode *inode, const char *name, const void *value, size_t size, int flags);
1463 int (*inode_listsecurity) (struct inode *inode, char *buffer, size_t buffer_size);
1464 void (*inode_getsecid) (const struct inode *inode, u32 *secid);
1466 int (*file_permission) (struct file *file, int mask);
1467 int (*file_alloc_security) (struct file *file);
1468 void (*file_free_security) (struct file *file);
1469 int (*file_ioctl) (struct file *file, unsigned int cmd,
1471 int (*file_mmap) (struct file *file,
1472 unsigned long reqprot, unsigned long prot,
1473 unsigned long flags, unsigned long addr,
1474 unsigned long addr_only);
1475 int (*file_mprotect) (struct vm_area_struct *vma,
1476 unsigned long reqprot,
1477 unsigned long prot);
1478 int (*file_lock) (struct file *file, unsigned int cmd);
1479 int (*file_fcntl) (struct file *file, unsigned int cmd,
1481 int (*file_set_fowner) (struct file *file);
1482 int (*file_send_sigiotask) (struct task_struct *tsk,
1483 struct fown_struct *fown, int sig);
1484 int (*file_receive) (struct file *file);
1485 int (*dentry_open) (struct file *file, const struct cred *cred);
1487 int (*task_create) (unsigned long clone_flags);
1488 int (*cred_alloc_blank) (struct cred *cred, gfp_t gfp);
1489 void (*cred_free) (struct cred *cred);
1490 int (*cred_prepare)(struct cred *new, const struct cred *old,
1492 void (*cred_transfer)(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)(char *kmod_name);
1496 int (*task_fix_setuid) (struct cred *new, const struct cred *old,
1498 int (*task_setpgid) (struct task_struct *p, pid_t pgid);
1499 int (*task_getpgid) (struct task_struct *p);
1500 int (*task_getsid) (struct task_struct *p);
1501 void (*task_getsecid) (struct task_struct *p, u32 *secid);
1502 int (*task_setnice) (struct task_struct *p, int nice);
1503 int (*task_setioprio) (struct task_struct *p, int ioprio);
1504 int (*task_getioprio) (struct task_struct *p);
1505 int (*task_setrlimit) (unsigned int resource, struct rlimit *new_rlim);
1506 int (*task_setscheduler) (struct task_struct *p, int policy,
1507 struct sched_param *lp);
1508 int (*task_getscheduler) (struct task_struct *p);
1509 int (*task_movememory) (struct task_struct *p);
1510 int (*task_kill) (struct task_struct *p,
1511 struct siginfo *info, int sig, u32 secid);
1512 int (*task_wait) (struct task_struct *p);
1513 int (*task_prctl) (int option, unsigned long arg2,
1514 unsigned long arg3, unsigned long arg4,
1515 unsigned long arg5);
1516 void (*task_to_inode) (struct task_struct *p, struct inode *inode);
1518 int (*ipc_permission) (struct kern_ipc_perm *ipcp, short flag);
1519 void (*ipc_getsecid) (struct kern_ipc_perm *ipcp, u32 *secid);
1521 int (*msg_msg_alloc_security) (struct msg_msg *msg);
1522 void (*msg_msg_free_security) (struct msg_msg *msg);
1524 int (*msg_queue_alloc_security) (struct msg_queue *msq);
1525 void (*msg_queue_free_security) (struct msg_queue *msq);
1526 int (*msg_queue_associate) (struct msg_queue *msq, int msqflg);
1527 int (*msg_queue_msgctl) (struct msg_queue *msq, int cmd);
1528 int (*msg_queue_msgsnd) (struct msg_queue *msq,
1529 struct msg_msg *msg, int msqflg);
1530 int (*msg_queue_msgrcv) (struct msg_queue *msq,
1531 struct msg_msg *msg,
1532 struct task_struct *target,
1533 long type, int mode);
1535 int (*shm_alloc_security) (struct shmid_kernel *shp);
1536 void (*shm_free_security) (struct shmid_kernel *shp);
1537 int (*shm_associate) (struct shmid_kernel *shp, int shmflg);
1538 int (*shm_shmctl) (struct shmid_kernel *shp, int cmd);
1539 int (*shm_shmat) (struct shmid_kernel *shp,
1540 char __user *shmaddr, int shmflg);
1542 int (*sem_alloc_security) (struct sem_array *sma);
1543 void (*sem_free_security) (struct sem_array *sma);
1544 int (*sem_associate) (struct sem_array *sma, int semflg);
1545 int (*sem_semctl) (struct sem_array *sma, int cmd);
1546 int (*sem_semop) (struct sem_array *sma,
1547 struct sembuf *sops, unsigned nsops, int alter);
1549 int (*netlink_send) (struct sock *sk, struct sk_buff *skb);
1550 int (*netlink_recv) (struct sk_buff *skb, int cap);
1552 void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1554 int (*getprocattr) (struct task_struct *p, char *name, char **value);
1555 int (*setprocattr) (struct task_struct *p, char *name, void *value, size_t size);
1556 int (*secid_to_secctx) (u32 secid, char **secdata, u32 *seclen);
1557 int (*secctx_to_secid) (const char *secdata, u32 seclen, u32 *secid);
1558 void (*release_secctx) (char *secdata, u32 seclen);
1560 int (*inode_notifysecctx)(struct inode *inode, void *ctx, u32 ctxlen);
1561 int (*inode_setsecctx)(struct dentry *dentry, void *ctx, u32 ctxlen);
1562 int (*inode_getsecctx)(struct inode *inode, void **ctx, u32 *ctxlen);
1564 #ifdef CONFIG_SECURITY_NETWORK
1565 int (*unix_stream_connect) (struct socket *sock,
1566 struct socket *other, struct sock *newsk);
1567 int (*unix_may_send) (struct socket *sock, struct socket *other);
1569 int (*socket_create) (int family, int type, int protocol, int kern);
1570 int (*socket_post_create) (struct socket *sock, int family,
1571 int type, int protocol, int kern);
1572 int (*socket_bind) (struct socket *sock,
1573 struct sockaddr *address, int addrlen);
1574 int (*socket_connect) (struct socket *sock,
1575 struct sockaddr *address, int addrlen);
1576 int (*socket_listen) (struct socket *sock, int backlog);
1577 int (*socket_accept) (struct socket *sock, struct socket *newsock);
1578 int (*socket_sendmsg) (struct socket *sock,
1579 struct msghdr *msg, int size);
1580 int (*socket_recvmsg) (struct socket *sock,
1581 struct msghdr *msg, int size, int flags);
1582 int (*socket_getsockname) (struct socket *sock);
1583 int (*socket_getpeername) (struct socket *sock);
1584 int (*socket_getsockopt) (struct socket *sock, int level, int optname);
1585 int (*socket_setsockopt) (struct socket *sock, int level, int optname);
1586 int (*socket_shutdown) (struct socket *sock, int how);
1587 int (*socket_sock_rcv_skb) (struct sock *sk, struct sk_buff *skb);
1588 int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
1589 int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
1590 int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
1591 void (*sk_free_security) (struct sock *sk);
1592 void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
1593 void (*sk_getsecid) (struct sock *sk, u32 *secid);
1594 void (*sock_graft) (struct sock *sk, struct socket *parent);
1595 int (*inet_conn_request) (struct sock *sk, struct sk_buff *skb,
1596 struct request_sock *req);
1597 void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req);
1598 void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb);
1599 void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
1600 int (*tun_dev_create)(void);
1601 void (*tun_dev_post_create)(struct sock *sk);
1602 int (*tun_dev_attach)(struct sock *sk);
1603 #endif /* CONFIG_SECURITY_NETWORK */
1605 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1606 int (*xfrm_policy_alloc_security) (struct xfrm_sec_ctx **ctxp,
1607 struct xfrm_user_sec_ctx *sec_ctx);
1608 int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
1609 void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
1610 int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
1611 int (*xfrm_state_alloc_security) (struct xfrm_state *x,
1612 struct xfrm_user_sec_ctx *sec_ctx,
1614 void (*xfrm_state_free_security) (struct xfrm_state *x);
1615 int (*xfrm_state_delete_security) (struct xfrm_state *x);
1616 int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1617 int (*xfrm_state_pol_flow_match) (struct xfrm_state *x,
1618 struct xfrm_policy *xp,
1620 int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall);
1621 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1623 /* key management security hooks */
1625 int (*key_alloc) (struct key *key, const struct cred *cred, unsigned long flags);
1626 void (*key_free) (struct key *key);
1627 int (*key_permission) (key_ref_t key_ref,
1628 const struct cred *cred,
1630 int (*key_getsecurity)(struct key *key, char **_buffer);
1631 #endif /* CONFIG_KEYS */
1634 int (*audit_rule_init) (u32 field, u32 op, char *rulestr, void **lsmrule);
1635 int (*audit_rule_known) (struct audit_krule *krule);
1636 int (*audit_rule_match) (u32 secid, u32 field, u32 op, void *lsmrule,
1637 struct audit_context *actx);
1638 void (*audit_rule_free) (void *lsmrule);
1639 #endif /* CONFIG_AUDIT */
1643 extern int security_init(void);
1644 extern int security_module_enable(struct security_operations *ops);
1645 extern int register_security(struct security_operations *ops);
1647 /* Security operations */
1648 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
1649 int security_ptrace_traceme(struct task_struct *parent);
1650 int security_capget(struct task_struct *target,
1651 kernel_cap_t *effective,
1652 kernel_cap_t *inheritable,
1653 kernel_cap_t *permitted);
1654 int security_capset(struct cred *new, const struct cred *old,
1655 const kernel_cap_t *effective,
1656 const kernel_cap_t *inheritable,
1657 const kernel_cap_t *permitted);
1658 int security_capable(int cap);
1659 int security_real_capable(struct task_struct *tsk, int cap);
1660 int security_real_capable_noaudit(struct task_struct *tsk, int cap);
1661 int security_sysctl(struct ctl_table *table, int op);
1662 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
1663 int security_quota_on(struct dentry *dentry);
1664 int security_syslog(int type, bool from_file);
1665 int security_settime(struct timespec *ts, struct timezone *tz);
1666 int security_vm_enough_memory(long pages);
1667 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
1668 int security_vm_enough_memory_kern(long pages);
1669 int security_bprm_set_creds(struct linux_binprm *bprm);
1670 int security_bprm_check(struct linux_binprm *bprm);
1671 void security_bprm_committing_creds(struct linux_binprm *bprm);
1672 void security_bprm_committed_creds(struct linux_binprm *bprm);
1673 int security_bprm_secureexec(struct linux_binprm *bprm);
1674 int security_sb_alloc(struct super_block *sb);
1675 void security_sb_free(struct super_block *sb);
1676 int security_sb_copy_data(char *orig, char *copy);
1677 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
1678 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
1679 int security_sb_statfs(struct dentry *dentry);
1680 int security_sb_mount(char *dev_name, struct path *path,
1681 char *type, unsigned long flags, void *data);
1682 int security_sb_umount(struct vfsmount *mnt, int flags);
1683 int security_sb_pivotroot(struct path *old_path, struct path *new_path);
1684 int security_sb_set_mnt_opts(struct super_block *sb, struct security_mnt_opts *opts);
1685 void security_sb_clone_mnt_opts(const struct super_block *oldsb,
1686 struct super_block *newsb);
1687 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
1689 int security_inode_alloc(struct inode *inode);
1690 void security_inode_free(struct inode *inode);
1691 int security_inode_init_security(struct inode *inode, struct inode *dir,
1692 char **name, void **value, size_t *len);
1693 int security_inode_create(struct inode *dir, struct dentry *dentry, int mode);
1694 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1695 struct dentry *new_dentry);
1696 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
1697 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
1698 const char *old_name);
1699 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode);
1700 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
1701 int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev);
1702 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
1703 struct inode *new_dir, struct dentry *new_dentry);
1704 int security_inode_readlink(struct dentry *dentry);
1705 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
1706 int security_inode_permission(struct inode *inode, int mask);
1707 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
1708 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
1709 int security_inode_setxattr(struct dentry *dentry, const char *name,
1710 const void *value, size_t size, int flags);
1711 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1712 const void *value, size_t size, int flags);
1713 int security_inode_getxattr(struct dentry *dentry, const char *name);
1714 int security_inode_listxattr(struct dentry *dentry);
1715 int security_inode_removexattr(struct dentry *dentry, const char *name);
1716 int security_inode_need_killpriv(struct dentry *dentry);
1717 int security_inode_killpriv(struct dentry *dentry);
1718 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
1719 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1720 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
1721 void security_inode_getsecid(const struct inode *inode, u32 *secid);
1722 int security_file_permission(struct file *file, int mask);
1723 int security_file_alloc(struct file *file);
1724 void security_file_free(struct file *file);
1725 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
1726 int security_file_mmap(struct file *file, unsigned long reqprot,
1727 unsigned long prot, unsigned long flags,
1728 unsigned long addr, unsigned long addr_only);
1729 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1730 unsigned long prot);
1731 int security_file_lock(struct file *file, unsigned int cmd);
1732 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
1733 int security_file_set_fowner(struct file *file);
1734 int security_file_send_sigiotask(struct task_struct *tsk,
1735 struct fown_struct *fown, int sig);
1736 int security_file_receive(struct file *file);
1737 int security_dentry_open(struct file *file, const struct cred *cred);
1738 int security_task_create(unsigned long clone_flags);
1739 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
1740 void security_cred_free(struct cred *cred);
1741 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
1742 void security_transfer_creds(struct cred *new, const struct cred *old);
1743 int security_kernel_act_as(struct cred *new, u32 secid);
1744 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
1745 int security_kernel_module_request(char *kmod_name);
1746 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1748 int security_task_setpgid(struct task_struct *p, pid_t pgid);
1749 int security_task_getpgid(struct task_struct *p);
1750 int security_task_getsid(struct task_struct *p);
1751 void security_task_getsecid(struct task_struct *p, u32 *secid);
1752 int security_task_setnice(struct task_struct *p, int nice);
1753 int security_task_setioprio(struct task_struct *p, int ioprio);
1754 int security_task_getioprio(struct task_struct *p);
1755 int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim);
1756 int security_task_setscheduler(struct task_struct *p,
1757 int policy, struct sched_param *lp);
1758 int security_task_getscheduler(struct task_struct *p);
1759 int security_task_movememory(struct task_struct *p);
1760 int security_task_kill(struct task_struct *p, struct siginfo *info,
1761 int sig, u32 secid);
1762 int security_task_wait(struct task_struct *p);
1763 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1764 unsigned long arg4, unsigned long arg5);
1765 void security_task_to_inode(struct task_struct *p, struct inode *inode);
1766 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
1767 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
1768 int security_msg_msg_alloc(struct msg_msg *msg);
1769 void security_msg_msg_free(struct msg_msg *msg);
1770 int security_msg_queue_alloc(struct msg_queue *msq);
1771 void security_msg_queue_free(struct msg_queue *msq);
1772 int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
1773 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
1774 int security_msg_queue_msgsnd(struct msg_queue *msq,
1775 struct msg_msg *msg, int msqflg);
1776 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1777 struct task_struct *target, long type, int mode);
1778 int security_shm_alloc(struct shmid_kernel *shp);
1779 void security_shm_free(struct shmid_kernel *shp);
1780 int security_shm_associate(struct shmid_kernel *shp, int shmflg);
1781 int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
1782 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
1783 int security_sem_alloc(struct sem_array *sma);
1784 void security_sem_free(struct sem_array *sma);
1785 int security_sem_associate(struct sem_array *sma, int semflg);
1786 int security_sem_semctl(struct sem_array *sma, int cmd);
1787 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1788 unsigned nsops, int alter);
1789 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
1790 int security_getprocattr(struct task_struct *p, char *name, char **value);
1791 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
1792 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
1793 int security_netlink_recv(struct sk_buff *skb, int cap);
1794 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
1795 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
1796 void security_release_secctx(char *secdata, u32 seclen);
1798 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
1799 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
1800 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
1801 #else /* CONFIG_SECURITY */
1802 struct security_mnt_opts {
1805 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
1809 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
1814 * This is the default capabilities functionality. Most of these functions
1815 * are just stubbed out, but a few must call the proper capable code.
1818 static inline int security_init(void)
1823 static inline int security_ptrace_access_check(struct task_struct *child,
1826 return cap_ptrace_access_check(child, mode);
1829 static inline int security_ptrace_traceme(struct task_struct *parent)
1831 return cap_ptrace_traceme(parent);
1834 static inline int security_capget(struct task_struct *target,
1835 kernel_cap_t *effective,
1836 kernel_cap_t *inheritable,
1837 kernel_cap_t *permitted)
1839 return cap_capget(target, effective, inheritable, permitted);
1842 static inline int security_capset(struct cred *new,
1843 const struct cred *old,
1844 const kernel_cap_t *effective,
1845 const kernel_cap_t *inheritable,
1846 const kernel_cap_t *permitted)
1848 return cap_capset(new, old, effective, inheritable, permitted);
1851 static inline int security_capable(int cap)
1853 return cap_capable(current, current_cred(), cap, SECURITY_CAP_AUDIT);
1856 static inline int security_real_capable(struct task_struct *tsk, int cap)
1861 ret = cap_capable(tsk, __task_cred(tsk), cap, SECURITY_CAP_AUDIT);
1867 int security_real_capable_noaudit(struct task_struct *tsk, int cap)
1872 ret = cap_capable(tsk, __task_cred(tsk), cap,
1873 SECURITY_CAP_NOAUDIT);
1878 static inline int security_sysctl(struct ctl_table *table, int op)
1883 static inline int security_quotactl(int cmds, int type, int id,
1884 struct super_block *sb)
1889 static inline int security_quota_on(struct dentry *dentry)
1894 static inline int security_syslog(int type, bool from_file)
1896 return cap_syslog(type, from_file);
1899 static inline int security_settime(struct timespec *ts, struct timezone *tz)
1901 return cap_settime(ts, tz);
1904 static inline int security_vm_enough_memory(long pages)
1906 WARN_ON(current->mm == NULL);
1907 return cap_vm_enough_memory(current->mm, pages);
1910 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
1912 WARN_ON(mm == NULL);
1913 return cap_vm_enough_memory(mm, pages);
1916 static inline int security_vm_enough_memory_kern(long pages)
1918 /* If current->mm is a kernel thread then we will pass NULL,
1919 for this specific case that is fine */
1920 return cap_vm_enough_memory(current->mm, pages);
1923 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
1925 return cap_bprm_set_creds(bprm);
1928 static inline int security_bprm_check(struct linux_binprm *bprm)
1933 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
1937 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
1941 static inline int security_bprm_secureexec(struct linux_binprm *bprm)
1943 return cap_bprm_secureexec(bprm);
1946 static inline int security_sb_alloc(struct super_block *sb)
1951 static inline void security_sb_free(struct super_block *sb)
1954 static inline int security_sb_copy_data(char *orig, char *copy)
1959 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
1964 static inline int security_sb_show_options(struct seq_file *m,
1965 struct super_block *sb)
1970 static inline int security_sb_statfs(struct dentry *dentry)
1975 static inline int security_sb_mount(char *dev_name, struct path *path,
1976 char *type, unsigned long flags,
1982 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
1987 static inline int security_sb_pivotroot(struct path *old_path,
1988 struct path *new_path)
1993 static inline int security_sb_set_mnt_opts(struct super_block *sb,
1994 struct security_mnt_opts *opts)
1999 static inline void security_sb_clone_mnt_opts(const struct super_block *oldsb,
2000 struct super_block *newsb)
2003 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
2008 static inline int security_inode_alloc(struct inode *inode)
2013 static inline void security_inode_free(struct inode *inode)
2016 static inline int security_inode_init_security(struct inode *inode,
2025 static inline int security_inode_create(struct inode *dir,
2026 struct dentry *dentry,
2032 static inline int security_inode_link(struct dentry *old_dentry,
2034 struct dentry *new_dentry)
2039 static inline int security_inode_unlink(struct inode *dir,
2040 struct dentry *dentry)
2045 static inline int security_inode_symlink(struct inode *dir,
2046 struct dentry *dentry,
2047 const char *old_name)
2052 static inline int security_inode_mkdir(struct inode *dir,
2053 struct dentry *dentry,
2059 static inline int security_inode_rmdir(struct inode *dir,
2060 struct dentry *dentry)
2065 static inline int security_inode_mknod(struct inode *dir,
2066 struct dentry *dentry,
2067 int mode, dev_t dev)
2072 static inline int security_inode_rename(struct inode *old_dir,
2073 struct dentry *old_dentry,
2074 struct inode *new_dir,
2075 struct dentry *new_dentry)
2080 static inline int security_inode_readlink(struct dentry *dentry)
2085 static inline int security_inode_follow_link(struct dentry *dentry,
2086 struct nameidata *nd)
2091 static inline int security_inode_permission(struct inode *inode, int mask)
2096 static inline int security_inode_setattr(struct dentry *dentry,
2102 static inline int security_inode_getattr(struct vfsmount *mnt,
2103 struct dentry *dentry)
2108 static inline int security_inode_setxattr(struct dentry *dentry,
2109 const char *name, const void *value, size_t size, int flags)
2111 return cap_inode_setxattr(dentry, name, value, size, flags);
2114 static inline void security_inode_post_setxattr(struct dentry *dentry,
2115 const char *name, const void *value, size_t size, int flags)
2118 static inline int security_inode_getxattr(struct dentry *dentry,
2124 static inline int security_inode_listxattr(struct dentry *dentry)
2129 static inline int security_inode_removexattr(struct dentry *dentry,
2132 return cap_inode_removexattr(dentry, name);
2135 static inline int security_inode_need_killpriv(struct dentry *dentry)
2137 return cap_inode_need_killpriv(dentry);
2140 static inline int security_inode_killpriv(struct dentry *dentry)
2142 return cap_inode_killpriv(dentry);
2145 static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
2150 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
2155 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
2160 static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
2165 static inline int security_file_permission(struct file *file, int mask)
2170 static inline int security_file_alloc(struct file *file)
2175 static inline void security_file_free(struct file *file)
2178 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
2184 static inline int security_file_mmap(struct file *file, unsigned long reqprot,
2186 unsigned long flags,
2188 unsigned long addr_only)
2190 return cap_file_mmap(file, reqprot, prot, flags, addr, addr_only);
2193 static inline int security_file_mprotect(struct vm_area_struct *vma,
2194 unsigned long reqprot,
2200 static inline int security_file_lock(struct file *file, unsigned int cmd)
2205 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
2211 static inline int security_file_set_fowner(struct file *file)
2216 static inline int security_file_send_sigiotask(struct task_struct *tsk,
2217 struct fown_struct *fown,
2223 static inline int security_file_receive(struct file *file)
2228 static inline int security_dentry_open(struct file *file,
2229 const struct cred *cred)
2234 static inline int security_task_create(unsigned long clone_flags)
2239 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
2244 static inline void security_cred_free(struct cred *cred)
2247 static inline int security_prepare_creds(struct cred *new,
2248 const struct cred *old,
2254 static inline void security_transfer_creds(struct cred *new,
2255 const struct cred *old)
2259 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
2264 static inline int security_kernel_create_files_as(struct cred *cred,
2265 struct inode *inode)
2270 static inline int security_kernel_module_request(char *kmod_name)
2275 static inline int security_task_fix_setuid(struct cred *new,
2276 const struct cred *old,
2279 return cap_task_fix_setuid(new, old, flags);
2282 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
2287 static inline int security_task_getpgid(struct task_struct *p)
2292 static inline int security_task_getsid(struct task_struct *p)
2297 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
2302 static inline int security_task_setnice(struct task_struct *p, int nice)
2304 return cap_task_setnice(p, nice);
2307 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
2309 return cap_task_setioprio(p, ioprio);
2312 static inline int security_task_getioprio(struct task_struct *p)
2317 static inline int security_task_setrlimit(unsigned int resource,
2318 struct rlimit *new_rlim)
2323 static inline int security_task_setscheduler(struct task_struct *p,
2325 struct sched_param *lp)
2327 return cap_task_setscheduler(p, policy, lp);
2330 static inline int security_task_getscheduler(struct task_struct *p)
2335 static inline int security_task_movememory(struct task_struct *p)
2340 static inline int security_task_kill(struct task_struct *p,
2341 struct siginfo *info, int sig,
2347 static inline int security_task_wait(struct task_struct *p)
2352 static inline int security_task_prctl(int option, unsigned long arg2,
2357 return cap_task_prctl(option, arg2, arg3, arg3, arg5);
2360 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
2363 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
2369 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
2374 static inline int security_msg_msg_alloc(struct msg_msg *msg)
2379 static inline void security_msg_msg_free(struct msg_msg *msg)
2382 static inline int security_msg_queue_alloc(struct msg_queue *msq)
2387 static inline void security_msg_queue_free(struct msg_queue *msq)
2390 static inline int security_msg_queue_associate(struct msg_queue *msq,
2396 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
2401 static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
2402 struct msg_msg *msg, int msqflg)
2407 static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
2408 struct msg_msg *msg,
2409 struct task_struct *target,
2410 long type, int mode)
2415 static inline int security_shm_alloc(struct shmid_kernel *shp)
2420 static inline void security_shm_free(struct shmid_kernel *shp)
2423 static inline int security_shm_associate(struct shmid_kernel *shp,
2429 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
2434 static inline int security_shm_shmat(struct shmid_kernel *shp,
2435 char __user *shmaddr, int shmflg)
2440 static inline int security_sem_alloc(struct sem_array *sma)
2445 static inline void security_sem_free(struct sem_array *sma)
2448 static inline int security_sem_associate(struct sem_array *sma, int semflg)
2453 static inline int security_sem_semctl(struct sem_array *sma, int cmd)
2458 static inline int security_sem_semop(struct sem_array *sma,
2459 struct sembuf *sops, unsigned nsops,
2465 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
2468 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
2473 static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2478 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
2480 return cap_netlink_send(sk, skb);
2483 static inline int security_netlink_recv(struct sk_buff *skb, int cap)
2485 return cap_netlink_recv(skb, cap);
2488 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2493 static inline int security_secctx_to_secid(const char *secdata,
2500 static inline void security_release_secctx(char *secdata, u32 seclen)
2504 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
2508 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
2512 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
2516 #endif /* CONFIG_SECURITY */
2518 #ifdef CONFIG_SECURITY_NETWORK
2520 int security_unix_stream_connect(struct socket *sock, struct socket *other,
2521 struct sock *newsk);
2522 int security_unix_may_send(struct socket *sock, struct socket *other);
2523 int security_socket_create(int family, int type, int protocol, int kern);
2524 int security_socket_post_create(struct socket *sock, int family,
2525 int type, int protocol, int kern);
2526 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
2527 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
2528 int security_socket_listen(struct socket *sock, int backlog);
2529 int security_socket_accept(struct socket *sock, struct socket *newsock);
2530 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
2531 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2532 int size, int flags);
2533 int security_socket_getsockname(struct socket *sock);
2534 int security_socket_getpeername(struct socket *sock);
2535 int security_socket_getsockopt(struct socket *sock, int level, int optname);
2536 int security_socket_setsockopt(struct socket *sock, int level, int optname);
2537 int security_socket_shutdown(struct socket *sock, int how);
2538 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
2539 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2540 int __user *optlen, unsigned len);
2541 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
2542 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
2543 void security_sk_free(struct sock *sk);
2544 void security_sk_clone(const struct sock *sk, struct sock *newsk);
2545 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
2546 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
2547 void security_sock_graft(struct sock*sk, struct socket *parent);
2548 int security_inet_conn_request(struct sock *sk,
2549 struct sk_buff *skb, struct request_sock *req);
2550 void security_inet_csk_clone(struct sock *newsk,
2551 const struct request_sock *req);
2552 void security_inet_conn_established(struct sock *sk,
2553 struct sk_buff *skb);
2554 int security_tun_dev_create(void);
2555 void security_tun_dev_post_create(struct sock *sk);
2556 int security_tun_dev_attach(struct sock *sk);
2558 #else /* CONFIG_SECURITY_NETWORK */
2559 static inline int security_unix_stream_connect(struct socket *sock,
2560 struct socket *other,
2566 static inline int security_unix_may_send(struct socket *sock,
2567 struct socket *other)
2572 static inline int security_socket_create(int family, int type,
2573 int protocol, int kern)
2578 static inline int security_socket_post_create(struct socket *sock,
2581 int protocol, int kern)
2586 static inline int security_socket_bind(struct socket *sock,
2587 struct sockaddr *address,
2593 static inline int security_socket_connect(struct socket *sock,
2594 struct sockaddr *address,
2600 static inline int security_socket_listen(struct socket *sock, int backlog)
2605 static inline int security_socket_accept(struct socket *sock,
2606 struct socket *newsock)
2611 static inline int security_socket_sendmsg(struct socket *sock,
2612 struct msghdr *msg, int size)
2617 static inline int security_socket_recvmsg(struct socket *sock,
2618 struct msghdr *msg, int size,
2624 static inline int security_socket_getsockname(struct socket *sock)
2629 static inline int security_socket_getpeername(struct socket *sock)
2634 static inline int security_socket_getsockopt(struct socket *sock,
2635 int level, int optname)
2640 static inline int security_socket_setsockopt(struct socket *sock,
2641 int level, int optname)
2646 static inline int security_socket_shutdown(struct socket *sock, int how)
2650 static inline int security_sock_rcv_skb(struct sock *sk,
2651 struct sk_buff *skb)
2656 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2657 int __user *optlen, unsigned len)
2659 return -ENOPROTOOPT;
2662 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
2664 return -ENOPROTOOPT;
2667 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2672 static inline void security_sk_free(struct sock *sk)
2676 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
2680 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
2684 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2688 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
2692 static inline int security_inet_conn_request(struct sock *sk,
2693 struct sk_buff *skb, struct request_sock *req)
2698 static inline void security_inet_csk_clone(struct sock *newsk,
2699 const struct request_sock *req)
2703 static inline void security_inet_conn_established(struct sock *sk,
2704 struct sk_buff *skb)
2708 static inline int security_tun_dev_create(void)
2713 static inline void security_tun_dev_post_create(struct sock *sk)
2717 static inline int security_tun_dev_attach(struct sock *sk)
2721 #endif /* CONFIG_SECURITY_NETWORK */
2723 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2725 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx);
2726 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
2727 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
2728 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
2729 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
2730 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2731 struct xfrm_sec_ctx *polsec, u32 secid);
2732 int security_xfrm_state_delete(struct xfrm_state *x);
2733 void security_xfrm_state_free(struct xfrm_state *x);
2734 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
2735 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2736 struct xfrm_policy *xp, struct flowi *fl);
2737 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
2738 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
2740 #else /* CONFIG_SECURITY_NETWORK_XFRM */
2742 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
2747 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
2752 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
2756 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
2761 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
2762 struct xfrm_user_sec_ctx *sec_ctx)
2767 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2768 struct xfrm_sec_ctx *polsec, u32 secid)
2773 static inline void security_xfrm_state_free(struct xfrm_state *x)
2777 static inline int security_xfrm_state_delete(struct xfrm_state *x)
2782 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
2787 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2788 struct xfrm_policy *xp, struct flowi *fl)
2793 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
2798 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2802 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2804 #ifdef CONFIG_SECURITY_PATH
2805 int security_path_unlink(struct path *dir, struct dentry *dentry);
2806 int security_path_mkdir(struct path *dir, struct dentry *dentry, int mode);
2807 int security_path_rmdir(struct path *dir, struct dentry *dentry);
2808 int security_path_mknod(struct path *dir, struct dentry *dentry, int mode,
2810 int security_path_truncate(struct path *path, loff_t length,
2811 unsigned int time_attrs);
2812 int security_path_symlink(struct path *dir, struct dentry *dentry,
2813 const char *old_name);
2814 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
2815 struct dentry *new_dentry);
2816 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
2817 struct path *new_dir, struct dentry *new_dentry);
2818 int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
2820 int security_path_chown(struct path *path, uid_t uid, gid_t gid);
2821 int security_path_chroot(struct path *path);
2822 #else /* CONFIG_SECURITY_PATH */
2823 static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
2828 static inline int security_path_mkdir(struct path *dir, struct dentry *dentry,
2834 static inline int security_path_rmdir(struct path *dir, struct dentry *dentry)
2839 static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
2840 int mode, unsigned int dev)
2845 static inline int security_path_truncate(struct path *path, loff_t length,
2846 unsigned int time_attrs)
2851 static inline int security_path_symlink(struct path *dir, struct dentry *dentry,
2852 const char *old_name)
2857 static inline int security_path_link(struct dentry *old_dentry,
2858 struct path *new_dir,
2859 struct dentry *new_dentry)
2864 static inline int security_path_rename(struct path *old_dir,
2865 struct dentry *old_dentry,
2866 struct path *new_dir,
2867 struct dentry *new_dentry)
2872 static inline int security_path_chmod(struct dentry *dentry,
2873 struct vfsmount *mnt,
2879 static inline int security_path_chown(struct path *path, uid_t uid, gid_t gid)
2884 static inline int security_path_chroot(struct path *path)
2888 #endif /* CONFIG_SECURITY_PATH */
2891 #ifdef CONFIG_SECURITY
2893 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
2894 void security_key_free(struct key *key);
2895 int security_key_permission(key_ref_t key_ref,
2896 const struct cred *cred, key_perm_t perm);
2897 int security_key_getsecurity(struct key *key, char **_buffer);
2901 static inline int security_key_alloc(struct key *key,
2902 const struct cred *cred,
2903 unsigned long flags)
2908 static inline void security_key_free(struct key *key)
2912 static inline int security_key_permission(key_ref_t key_ref,
2913 const struct cred *cred,
2919 static inline int security_key_getsecurity(struct key *key, char **_buffer)
2926 #endif /* CONFIG_KEYS */
2929 #ifdef CONFIG_SECURITY
2930 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
2931 int security_audit_rule_known(struct audit_krule *krule);
2932 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
2933 struct audit_context *actx);
2934 void security_audit_rule_free(void *lsmrule);
2938 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
2944 static inline int security_audit_rule_known(struct audit_krule *krule)
2949 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
2950 void *lsmrule, struct audit_context *actx)
2955 static inline void security_audit_rule_free(void *lsmrule)
2958 #endif /* CONFIG_SECURITY */
2959 #endif /* CONFIG_AUDIT */
2961 #ifdef CONFIG_SECURITYFS
2963 extern struct dentry *securityfs_create_file(const char *name, mode_t mode,
2964 struct dentry *parent, void *data,
2965 const struct file_operations *fops);
2966 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
2967 extern void securityfs_remove(struct dentry *dentry);
2969 #else /* CONFIG_SECURITYFS */
2971 static inline struct dentry *securityfs_create_dir(const char *name,
2972 struct dentry *parent)
2974 return ERR_PTR(-ENODEV);
2977 static inline struct dentry *securityfs_create_file(const char *name,
2979 struct dentry *parent,
2981 const struct file_operations *fops)
2983 return ERR_PTR(-ENODEV);
2986 static inline void securityfs_remove(struct dentry *dentry)
2991 #ifdef CONFIG_SECURITY
2993 static inline char *alloc_secdata(void)
2995 return (char *)get_zeroed_page(GFP_KERNEL);
2998 static inline void free_secdata(void *secdata)
3000 free_page((unsigned long)secdata);
3005 static inline char *alloc_secdata(void)
3010 static inline void free_secdata(void *secdata)
3012 #endif /* CONFIG_SECURITY */
3014 #endif /* ! __LINUX_SECURITY_H */