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
25 #include <linux/key.h>
26 #include <linux/capability.h>
27 #include <linux/slab.h>
28 #include <linux/err.h>
48 struct file_operations;
56 /* Maximum number of letters for an LSM name string */
57 #define SECURITY_NAME_MAX 10
59 /* If capable should audit the security request */
60 #define SECURITY_CAP_NOAUDIT 0
61 #define SECURITY_CAP_AUDIT 1
65 struct user_namespace;
69 * These functions are in security/capability.c and are used
70 * as the default capabilities functions
72 extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
74 extern int cap_settime(const struct timespec *ts, const struct timezone *tz);
75 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
76 extern int cap_ptrace_traceme(struct task_struct *parent);
77 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
78 extern int cap_capset(struct cred *new, const struct cred *old,
79 const kernel_cap_t *effective,
80 const kernel_cap_t *inheritable,
81 const kernel_cap_t *permitted);
82 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
83 extern int cap_bprm_secureexec(struct linux_binprm *bprm);
84 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
85 const void *value, size_t size, int flags);
86 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
87 extern int cap_inode_need_killpriv(struct dentry *dentry);
88 extern int cap_inode_killpriv(struct dentry *dentry);
89 extern int cap_mmap_addr(unsigned long addr);
90 extern int cap_mmap_file(struct file *file, unsigned long reqprot,
91 unsigned long prot, unsigned long flags);
92 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
93 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
94 unsigned long arg4, unsigned long arg5);
95 extern int cap_task_setscheduler(struct task_struct *p);
96 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
97 extern int cap_task_setnice(struct task_struct *p, int nice);
98 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
107 struct xfrm_selector;
110 struct xfrm_user_sec_ctx;
113 extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
115 void reset_security_ops(void);
118 extern unsigned long mmap_min_addr;
119 extern unsigned long dac_mmap_min_addr;
121 #define mmap_min_addr 0UL
122 #define dac_mmap_min_addr 0UL
126 * Values used in the task_security_ops calls
128 /* setuid or setgid, id0 == uid or gid */
129 #define LSM_SETID_ID 1
131 /* setreuid or setregid, id0 == real, id1 == eff */
132 #define LSM_SETID_RE 2
134 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
135 #define LSM_SETID_RES 4
137 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
138 #define LSM_SETID_FS 8
140 /* forward declares to avoid warnings */
144 /* bprm->unsafe reasons */
145 #define LSM_UNSAFE_SHARE 1
146 #define LSM_UNSAFE_PTRACE 2
147 #define LSM_UNSAFE_PTRACE_CAP 4
148 #define LSM_UNSAFE_NO_NEW_PRIVS 8
151 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
152 void __user *buffer, size_t *lenp, loff_t *ppos);
155 /* security_inode_init_security callback function to write xattrs */
156 typedef int (*initxattrs) (struct inode *inode,
157 const struct xattr *xattr_array, void *fs_data);
159 #ifdef CONFIG_SECURITY
161 struct security_mnt_opts {
167 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
169 opts->mnt_opts = NULL;
170 opts->mnt_opts_flags = NULL;
171 opts->num_mnt_opts = 0;
174 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
178 for (i = 0; i < opts->num_mnt_opts; i++)
179 kfree(opts->mnt_opts[i]);
180 kfree(opts->mnt_opts);
181 opts->mnt_opts = NULL;
182 kfree(opts->mnt_opts_flags);
183 opts->mnt_opts_flags = NULL;
184 opts->num_mnt_opts = 0;
188 * struct security_operations - main security structure
190 * Security module identifier.
193 * A string that acts as a unique identifier for the LSM with max number
194 * of characters = SECURITY_NAME_MAX.
196 * Security hooks for program execution operations.
199 * Save security information in the bprm->security field, typically based
200 * on information about the bprm->file, for later use by the apply_creds
201 * hook. This hook may also optionally check permissions (e.g. for
202 * transitions between security domains).
203 * This hook may be called multiple times during a single execve, e.g. for
204 * interpreters. The hook can tell whether it has already been called by
205 * checking to see if @bprm->security is non-NULL. If so, then the hook
206 * may decide either to retain the security information saved earlier or
208 * @bprm contains the linux_binprm structure.
209 * Return 0 if the hook is successful and permission is granted.
210 * @bprm_check_security:
211 * This hook mediates the point when a search for a binary handler will
212 * begin. It allows a check the @bprm->security value which is set in the
213 * preceding set_creds call. The primary difference from set_creds is
214 * that the argv list and envp list are reliably available in @bprm. This
215 * hook may be called multiple times during a single execve; and in each
216 * pass set_creds is called first.
217 * @bprm contains the linux_binprm structure.
218 * Return 0 if the hook is successful and permission is granted.
219 * @bprm_committing_creds:
220 * Prepare to install the new security attributes of a process being
221 * transformed by an execve operation, based on the old credentials
222 * pointed to by @current->cred and the information set in @bprm->cred by
223 * the bprm_set_creds hook. @bprm points to the linux_binprm structure.
224 * This hook is a good place to perform state changes on the process such
225 * as closing open file descriptors to which access will no longer be
226 * granted when the attributes are changed. This is called immediately
227 * before commit_creds().
228 * @bprm_committed_creds:
229 * Tidy up after the installation of the new security attributes of a
230 * process being transformed by an execve operation. The new credentials
231 * have, by this point, been set to @current->cred. @bprm points to the
232 * linux_binprm structure. This hook is a good place to perform state
233 * changes on the process such as clearing out non-inheritable signal
234 * state. This is called immediately after commit_creds().
236 * Return a boolean value (0 or 1) indicating whether a "secure exec"
237 * is required. The flag is passed in the auxiliary table
238 * on the initial stack to the ELF interpreter to indicate whether libc
239 * should enable secure mode.
240 * @bprm contains the linux_binprm structure.
242 * Security hooks for filesystem operations.
244 * @sb_alloc_security:
245 * Allocate and attach a security structure to the sb->s_security field.
246 * The s_security field is initialized to NULL when the structure is
248 * @sb contains the super_block structure to be modified.
249 * Return 0 if operation was successful.
251 * Deallocate and clear the sb->s_security field.
252 * @sb contains the super_block structure to be modified.
254 * Check permission before obtaining filesystem statistics for the @mnt
256 * @dentry is a handle on the superblock for the filesystem.
257 * Return 0 if permission is granted.
259 * Check permission before an object specified by @dev_name is mounted on
260 * the mount point named by @nd. For an ordinary mount, @dev_name
261 * identifies a device if the file system type requires a device. For a
262 * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a
263 * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
264 * pathname of the object being mounted.
265 * @dev_name contains the name for object being mounted.
266 * @path contains the path for mount point object.
267 * @type contains the filesystem type.
268 * @flags contains the mount flags.
269 * @data contains the filesystem-specific data.
270 * Return 0 if permission is granted.
272 * Allow mount option data to be copied prior to parsing by the filesystem,
273 * so that the security module can extract security-specific mount
274 * options cleanly (a filesystem may modify the data e.g. with strsep()).
275 * This also allows the original mount data to be stripped of security-
276 * specific options to avoid having to make filesystems aware of them.
277 * @type the type of filesystem being mounted.
278 * @orig the original mount data copied from userspace.
279 * @copy copied data which will be passed to the security module.
280 * Returns 0 if the copy was successful.
282 * Extracts security system specific mount options and verifies no changes
283 * are being made to those options.
284 * @sb superblock being remounted
285 * @data contains the filesystem-specific data.
286 * Return 0 if permission is granted.
288 * Check permission before the @mnt file system is unmounted.
289 * @mnt contains the mounted file system.
290 * @flags contains the unmount flags, e.g. MNT_FORCE.
291 * Return 0 if permission is granted.
293 * Check permission before pivoting the root filesystem.
294 * @old_path contains the path for the new location of the current root (put_old).
295 * @new_path contains the path for the new root (new_root).
296 * Return 0 if permission is granted.
298 * Set the security relevant mount options used for a superblock
299 * @sb the superblock to set security mount options for
300 * @opts binary data structure containing all lsm mount data
301 * @sb_clone_mnt_opts:
302 * Copy all security options from a given superblock to another
303 * @oldsb old superblock which contain information to clone
304 * @newsb new superblock which needs filled in
305 * @sb_parse_opts_str:
306 * Parse a string of security data filling in the opts structure
307 * @options string containing all mount options known by the LSM
308 * @opts binary data structure usable by the LSM
310 * Security hooks for inode operations.
312 * @inode_alloc_security:
313 * Allocate and attach a security structure to @inode->i_security. The
314 * i_security field is initialized to NULL when the inode structure is
316 * @inode contains the inode structure.
317 * Return 0 if operation was successful.
318 * @inode_free_security:
319 * @inode contains the inode structure.
320 * Deallocate the inode security structure and set @inode->i_security to
322 * @inode_init_security:
323 * Obtain the security attribute name suffix and value to set on a newly
324 * created inode and set up the incore security field for the new inode.
325 * This hook is called by the fs code as part of the inode creation
326 * transaction and provides for atomic labeling of the inode, unlike
327 * the post_create/mkdir/... hooks called by the VFS. The hook function
328 * is expected to allocate the name and value via kmalloc, with the caller
329 * being responsible for calling kfree after using them.
330 * If the security module does not use security attributes or does
331 * not wish to put a security attribute on this particular inode,
332 * then it should return -EOPNOTSUPP to skip this processing.
333 * @inode contains the inode structure of the newly created inode.
334 * @dir contains the inode structure of the parent directory.
335 * @qstr contains the last path component of the new object
336 * @name will be set to the allocated name suffix (e.g. selinux).
337 * @value will be set to the allocated attribute value.
338 * @len will be set to the length of the value.
339 * Returns 0 if @name and @value have been successfully set,
340 * -EOPNOTSUPP if no security attribute is needed, or
341 * -ENOMEM on memory allocation failure.
343 * Check permission to create a regular file.
344 * @dir contains inode structure of the parent of the new file.
345 * @dentry contains the dentry structure for the file to be created.
346 * @mode contains the file mode of the file to be created.
347 * Return 0 if permission is granted.
349 * Check permission before creating a new hard link to a file.
350 * @old_dentry contains the dentry structure for an existing link to the file.
351 * @dir contains the inode structure of the parent directory of the new link.
352 * @new_dentry contains the dentry structure for the new link.
353 * Return 0 if permission is granted.
355 * Check permission before creating a new hard link to a file.
356 * @old_dentry contains the dentry structure for an existing link
358 * @new_dir contains the path structure of the parent directory of
360 * @new_dentry contains the dentry structure for the new link.
361 * Return 0 if permission is granted.
363 * Check the permission to remove a hard link to a file.
364 * @dir contains the inode structure of parent directory of the file.
365 * @dentry contains the dentry structure for file to be unlinked.
366 * Return 0 if permission is granted.
368 * Check the permission to remove a hard link to a file.
369 * @dir contains the path structure of parent directory of the file.
370 * @dentry contains the dentry structure for file to be unlinked.
371 * Return 0 if permission is granted.
373 * Check the permission to create a symbolic link to a file.
374 * @dir contains the inode structure of parent directory of the symbolic link.
375 * @dentry contains the dentry structure of the symbolic link.
376 * @old_name contains the pathname of file.
377 * Return 0 if permission is granted.
379 * Check the permission to create a symbolic link to a file.
380 * @dir contains the path structure of parent directory of
382 * @dentry contains the dentry structure of the symbolic link.
383 * @old_name contains the pathname of file.
384 * Return 0 if permission is granted.
386 * Check permissions to create a new directory in the existing directory
387 * associated with inode structure @dir.
388 * @dir contains the inode structure of parent of the directory to be created.
389 * @dentry contains the dentry structure of new directory.
390 * @mode contains the mode of new directory.
391 * Return 0 if permission is granted.
393 * Check permissions to create a new directory in the existing directory
394 * associated with path structure @path.
395 * @dir contains the path structure of parent of the directory
397 * @dentry contains the dentry structure of new directory.
398 * @mode contains the mode of new directory.
399 * Return 0 if permission is granted.
401 * Check the permission to remove a directory.
402 * @dir contains the inode structure of parent of the directory to be removed.
403 * @dentry contains the dentry structure of directory to be removed.
404 * Return 0 if permission is granted.
406 * Check the permission to remove a directory.
407 * @dir contains the path structure of parent of the directory to be
409 * @dentry contains the dentry structure of directory to be removed.
410 * Return 0 if permission is granted.
412 * Check permissions when creating a special file (or a socket or a fifo
413 * file created via the mknod system call). Note that if mknod operation
414 * is being done for a regular file, then the create hook will be called
416 * @dir contains the inode structure of parent of the new file.
417 * @dentry contains the dentry structure of the new file.
418 * @mode contains the mode of the new file.
419 * @dev contains the device number.
420 * Return 0 if permission is granted.
422 * Check permissions when creating a file. Note that this hook is called
423 * even if mknod operation is being done for a regular file.
424 * @dir contains the path structure of parent of the new file.
425 * @dentry contains the dentry structure of the new file.
426 * @mode contains the mode of the new file.
427 * @dev contains the undecoded device number. Use new_decode_dev() to get
428 * the decoded device number.
429 * Return 0 if permission is granted.
431 * Check for permission to rename a file or directory.
432 * @old_dir contains the inode structure for parent of the old link.
433 * @old_dentry contains the dentry structure of the old link.
434 * @new_dir contains the inode structure for parent of the new link.
435 * @new_dentry contains the dentry structure of the new link.
436 * Return 0 if permission is granted.
438 * Check for permission to rename a file or directory.
439 * @old_dir contains the path structure for parent of the old link.
440 * @old_dentry contains the dentry structure of the old link.
441 * @new_dir contains the path structure for parent of the new link.
442 * @new_dentry contains the dentry structure of the new link.
443 * Return 0 if permission is granted.
445 * Check for permission to change DAC's permission of a file or directory.
446 * @dentry contains the dentry structure.
447 * @mnt contains the vfsmnt structure.
448 * @mode contains DAC's mode.
449 * Return 0 if permission is granted.
451 * Check for permission to change owner/group of a file or directory.
452 * @path contains the path structure.
453 * @uid contains new owner's ID.
454 * @gid contains new group's ID.
455 * Return 0 if permission is granted.
457 * Check for permission to change root directory.
458 * @path contains the path structure.
459 * Return 0 if permission is granted.
461 * Check the permission to read the symbolic link.
462 * @dentry contains the dentry structure for the file link.
463 * Return 0 if permission is granted.
464 * @inode_follow_link:
465 * Check permission to follow a symbolic link when looking up a pathname.
466 * @dentry contains the dentry structure for the link.
467 * @nd contains the nameidata structure for the parent directory.
468 * Return 0 if permission is granted.
470 * Check permission before accessing an inode. This hook is called by the
471 * existing Linux permission function, so a security module can use it to
472 * provide additional checking for existing Linux permission checks.
473 * Notice that this hook is called when a file is opened (as well as many
474 * other operations), whereas the file_security_ops permission hook is
475 * called when the actual read/write operations are performed.
476 * @inode contains the inode structure to check.
477 * @mask contains the permission mask.
478 * Return 0 if permission is granted.
480 * Check permission before setting file attributes. Note that the kernel
481 * call to notify_change is performed from several locations, whenever
482 * file attributes change (such as when a file is truncated, chown/chmod
483 * operations, transferring disk quotas, etc).
484 * @dentry contains the dentry structure for the file.
485 * @attr is the iattr structure containing the new file attributes.
486 * Return 0 if permission is granted.
488 * Check permission before truncating a file.
489 * @path contains the path structure for the file.
490 * Return 0 if permission is granted.
492 * Check permission before obtaining file attributes.
493 * @mnt is the vfsmount where the dentry was looked up
494 * @dentry contains the dentry structure for the file.
495 * Return 0 if permission is granted.
497 * Check permission before setting the extended attributes
498 * @value identified by @name for @dentry.
499 * Return 0 if permission is granted.
500 * @inode_post_setxattr:
501 * Update inode security field after successful setxattr operation.
502 * @value identified by @name for @dentry.
504 * Check permission before obtaining the extended attributes
505 * identified by @name for @dentry.
506 * Return 0 if permission is granted.
508 * Check permission before obtaining the list of extended attribute
510 * Return 0 if permission is granted.
511 * @inode_removexattr:
512 * Check permission before removing the extended attribute
513 * identified by @name for @dentry.
514 * Return 0 if permission is granted.
515 * @inode_getsecurity:
516 * Retrieve a copy of the extended attribute representation of the
517 * security label associated with @name for @inode via @buffer. Note that
518 * @name is the remainder of the attribute name after the security prefix
519 * has been removed. @alloc is used to specify of the call should return a
520 * value via the buffer or just the value length Return size of buffer on
522 * @inode_setsecurity:
523 * Set the security label associated with @name for @inode from the
524 * extended attribute value @value. @size indicates the size of the
525 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
526 * Note that @name is the remainder of the attribute name after the
527 * security. prefix has been removed.
528 * Return 0 on success.
529 * @inode_listsecurity:
530 * Copy the extended attribute names for the security labels
531 * associated with @inode into @buffer. The maximum size of @buffer
532 * is specified by @buffer_size. @buffer may be NULL to request
533 * the size of the buffer required.
534 * Returns number of bytes used/required on success.
535 * @inode_need_killpriv:
536 * Called when an inode has been changed.
537 * @dentry is the dentry being changed.
538 * Return <0 on error to abort the inode change operation.
539 * Return 0 if inode_killpriv does not need to be called.
540 * Return >0 if inode_killpriv does need to be called.
542 * The setuid bit is being removed. Remove similar security labels.
543 * Called with the dentry->d_inode->i_mutex held.
544 * @dentry is the dentry being changed.
545 * Return 0 on success. If error is returned, then the operation
546 * causing setuid bit removal is failed.
548 * Get the secid associated with the node.
549 * @inode contains a pointer to the inode.
550 * @secid contains a pointer to the location where result will be saved.
551 * In case of failure, @secid will be set to zero.
553 * Security hooks for file operations
556 * Check file permissions before accessing an open file. This hook is
557 * called by various operations that read or write files. A security
558 * module can use this hook to perform additional checking on these
559 * operations, e.g. to revalidate permissions on use to support privilege
560 * bracketing or policy changes. Notice that this hook is used when the
561 * actual read/write operations are performed, whereas the
562 * inode_security_ops hook is called when a file is opened (as well as
563 * many other operations).
564 * Caveat: Although this hook can be used to revalidate permissions for
565 * various system call operations that read or write files, it does not
566 * address the revalidation of permissions for memory-mapped files.
567 * Security modules must handle this separately if they need such
569 * @file contains the file structure being accessed.
570 * @mask contains the requested permissions.
571 * Return 0 if permission is granted.
572 * @file_alloc_security:
573 * Allocate and attach a security structure to the file->f_security field.
574 * The security field is initialized to NULL when the structure is first
576 * @file contains the file structure to secure.
577 * Return 0 if the hook is successful and permission is granted.
578 * @file_free_security:
579 * Deallocate and free any security structures stored in file->f_security.
580 * @file contains the file structure being modified.
582 * @file contains the file structure.
583 * @cmd contains the operation to perform.
584 * @arg contains the operational arguments.
585 * Check permission for an ioctl operation on @file. Note that @arg
586 * sometimes represents a user space pointer; in other cases, it may be a
587 * simple integer value. When @arg represents a user space pointer, it
588 * should never be used by the security module.
589 * Return 0 if permission is granted.
591 * Check permissions for a mmap operation at @addr.
592 * @addr contains virtual address that will be used for the operation.
593 * Return 0 if permission is granted.
595 * Check permissions for a mmap operation. The @file may be NULL, e.g.
596 * if mapping anonymous memory.
597 * @file contains the file structure for file to map (may be NULL).
598 * @reqprot contains the protection requested by the application.
599 * @prot contains the protection that will be applied by the kernel.
600 * @flags contains the operational flags.
601 * Return 0 if permission is granted.
603 * Check permissions before changing memory access permissions.
604 * @vma contains the memory region to modify.
605 * @reqprot contains the protection requested by the application.
606 * @prot contains the protection that will be applied by the kernel.
607 * Return 0 if permission is granted.
609 * Check permission before performing file locking operations.
610 * Note: this hook mediates both flock and fcntl style locks.
611 * @file contains the file structure.
612 * @cmd contains the posix-translated lock operation to perform
613 * (e.g. F_RDLCK, F_WRLCK).
614 * Return 0 if permission is granted.
616 * Check permission before allowing the file operation specified by @cmd
617 * from being performed on the file @file. Note that @arg sometimes
618 * represents a user space pointer; in other cases, it may be a simple
619 * integer value. When @arg represents a user space pointer, it should
620 * never be used by the security module.
621 * @file contains the file structure.
622 * @cmd contains the operation to be performed.
623 * @arg contains the operational arguments.
624 * Return 0 if permission is granted.
626 * Save owner security information (typically from current->security) in
627 * file->f_security for later use by the send_sigiotask hook.
628 * @file contains the file structure to update.
629 * Return 0 on success.
630 * @file_send_sigiotask:
631 * Check permission for the file owner @fown to send SIGIO or SIGURG to the
632 * process @tsk. Note that this hook is sometimes called from interrupt.
633 * Note that the fown_struct, @fown, is never outside the context of a
634 * struct file, so the file structure (and associated security information)
635 * can always be obtained:
636 * container_of(fown, struct file, f_owner)
637 * @tsk contains the structure of task receiving signal.
638 * @fown contains the file owner information.
639 * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
640 * Return 0 if permission is granted.
642 * This hook allows security modules to control the ability of a process
643 * to receive an open file descriptor via socket IPC.
644 * @file contains the file structure being received.
645 * Return 0 if permission is granted.
647 * Save open-time permission checking state for later use upon
648 * file_permission, and recheck access if anything has changed
649 * since inode_permission.
651 * Security hooks for task operations.
654 * Check permission before creating a child process. See the clone(2)
655 * manual page for definitions of the @clone_flags.
656 * @clone_flags contains the flags indicating what should be shared.
657 * Return 0 if permission is granted.
659 * @task task being freed
660 * Handle release of task-related resources. (Note that this can be called
661 * from interrupt context.)
663 * @cred points to the credentials.
664 * @gfp indicates the atomicity of any memory allocations.
665 * Only allocate sufficient memory and attach to @cred such that
666 * cred_transfer() will not get ENOMEM.
668 * @cred points to the credentials.
669 * Deallocate and clear the cred->security field in a set of credentials.
671 * @new points to the new credentials.
672 * @old points to the original credentials.
673 * @gfp indicates the atomicity of any memory allocations.
674 * Prepare a new set of credentials by copying the data from the old set.
676 * @new points to the new credentials.
677 * @old points to the original credentials.
678 * Transfer data from original creds to new creds
680 * Set the credentials for a kernel service to act as (subjective context).
681 * @new points to the credentials to be modified.
682 * @secid specifies the security ID to be set
683 * The current task must be the one that nominated @secid.
684 * Return 0 if successful.
685 * @kernel_create_files_as:
686 * Set the file creation context in a set of credentials to be the same as
687 * the objective context of the specified inode.
688 * @new points to the credentials to be modified.
689 * @inode points to the inode to use as a reference.
690 * The current task must be the one that nominated @inode.
691 * Return 0 if successful.
692 * @kernel_module_request:
693 * Ability to trigger the kernel to automatically upcall to userspace for
694 * userspace to load a kernel module with the given name.
695 * @kmod_name name of the module requested by the kernel
696 * Return 0 if successful.
697 * @kernel_module_from_file:
698 * Load a kernel module from userspace.
699 * @file contains the file structure pointing to the file containing
700 * the kernel module to load. If the module is being loaded from a blob,
701 * this argument will be NULL.
702 * Return 0 if permission is granted.
704 * Update the module's state after setting one or more of the user
705 * identity attributes of the current process. The @flags parameter
706 * indicates which of the set*uid system calls invoked this hook. If
707 * @new is the set of credentials that will be installed. Modifications
708 * should be made to this rather than to @current->cred.
709 * @old is the set of credentials that are being replaces
710 * @flags contains one of the LSM_SETID_* values.
711 * Return 0 on success.
713 * Check permission before setting the process group identifier of the
714 * process @p to @pgid.
715 * @p contains the task_struct for process being modified.
716 * @pgid contains the new pgid.
717 * Return 0 if permission is granted.
719 * Check permission before getting the process group identifier of the
721 * @p contains the task_struct for the process.
722 * Return 0 if permission is granted.
724 * Check permission before getting the session identifier of the process
726 * @p contains the task_struct for the process.
727 * Return 0 if permission is granted.
729 * Retrieve the security identifier of the process @p.
730 * @p contains the task_struct for the process and place is into @secid.
731 * In case of failure, @secid will be set to zero.
734 * Check permission before setting the nice value of @p to @nice.
735 * @p contains the task_struct of process.
736 * @nice contains the new nice value.
737 * Return 0 if permission is granted.
739 * Check permission before setting the ioprio value of @p to @ioprio.
740 * @p contains the task_struct of process.
741 * @ioprio contains the new ioprio value
742 * Return 0 if permission is granted.
744 * Check permission before getting the ioprio value of @p.
745 * @p contains the task_struct of process.
746 * Return 0 if permission is granted.
748 * Check permission before setting the resource limits of the current
749 * process for @resource to @new_rlim. The old resource limit values can
750 * be examined by dereferencing (current->signal->rlim + resource).
751 * @resource contains the resource whose limit is being set.
752 * @new_rlim contains the new limits for @resource.
753 * Return 0 if permission is granted.
754 * @task_setscheduler:
755 * Check permission before setting scheduling policy and/or parameters of
756 * process @p based on @policy and @lp.
757 * @p contains the task_struct for process.
758 * @policy contains the scheduling policy.
759 * @lp contains the scheduling parameters.
760 * Return 0 if permission is granted.
761 * @task_getscheduler:
762 * Check permission before obtaining scheduling information for process
764 * @p contains the task_struct for process.
765 * Return 0 if permission is granted.
767 * Check permission before moving memory owned by process @p.
768 * @p contains the task_struct for process.
769 * Return 0 if permission is granted.
771 * Check permission before sending signal @sig to @p. @info can be NULL,
772 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
773 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
774 * from the kernel and should typically be permitted.
775 * SIGIO signals are handled separately by the send_sigiotask hook in
777 * @p contains the task_struct for process.
778 * @info contains the signal information.
779 * @sig contains the signal value.
780 * @secid contains the sid of the process where the signal originated
781 * Return 0 if permission is granted.
783 * Check permission before allowing a process to reap a child process @p
784 * and collect its status information.
785 * @p contains the task_struct for process.
786 * Return 0 if permission is granted.
788 * Check permission before performing a process control operation on the
790 * @option contains the operation.
791 * @arg2 contains a argument.
792 * @arg3 contains a argument.
793 * @arg4 contains a argument.
794 * @arg5 contains a argument.
795 * Return -ENOSYS if no-one wanted to handle this op, any other value to
796 * cause prctl() to return immediately with that value.
798 * Set the security attributes for an inode based on an associated task's
799 * security attributes, e.g. for /proc/pid inodes.
800 * @p contains the task_struct for the task.
801 * @inode contains the inode structure for the inode.
803 * Security hooks for Netlink messaging.
806 * Save security information for a netlink message so that permission
807 * checking can be performed when the message is processed. The security
808 * information can be saved using the eff_cap field of the
809 * netlink_skb_parms structure. Also may be used to provide fine
810 * grained control over message transmission.
811 * @sk associated sock of task sending the message.
812 * @skb contains the sk_buff structure for the netlink message.
813 * Return 0 if the information was successfully saved and message
814 * is allowed to be transmitted.
816 * Security hooks for Unix domain networking.
818 * @unix_stream_connect:
819 * Check permissions before establishing a Unix domain stream connection
820 * between @sock and @other.
821 * @sock contains the sock structure.
822 * @other contains the peer sock structure.
823 * @newsk contains the new sock structure.
824 * Return 0 if permission is granted.
826 * Check permissions before connecting or sending datagrams from @sock to
828 * @sock contains the socket structure.
829 * @other contains the peer socket structure.
830 * Return 0 if permission is granted.
832 * The @unix_stream_connect and @unix_may_send hooks were necessary because
833 * Linux provides an alternative to the conventional file name space for Unix
834 * domain sockets. Whereas binding and connecting to sockets in the file name
835 * space is mediated by the typical file permissions (and caught by the mknod
836 * and permission hooks in inode_security_ops), binding and connecting to
837 * sockets in the abstract name space is completely unmediated. Sufficient
838 * control of Unix domain sockets in the abstract name space isn't possible
839 * using only the socket layer hooks, since we need to know the actual target
840 * socket, which is not looked up until we are inside the af_unix code.
842 * Security hooks for socket operations.
845 * Check permissions prior to creating a new socket.
846 * @family contains the requested protocol family.
847 * @type contains the requested communications type.
848 * @protocol contains the requested protocol.
849 * @kern set to 1 if a kernel socket.
850 * Return 0 if permission is granted.
851 * @socket_post_create:
852 * This hook allows a module to update or allocate a per-socket security
853 * structure. Note that the security field was not added directly to the
854 * socket structure, but rather, the socket security information is stored
855 * in the associated inode. Typically, the inode alloc_security hook will
856 * allocate and and attach security information to
857 * sock->inode->i_security. This hook may be used to update the
858 * sock->inode->i_security field with additional information that wasn't
859 * available when the inode was allocated.
860 * @sock contains the newly created socket structure.
861 * @family contains the requested protocol family.
862 * @type contains the requested communications type.
863 * @protocol contains the requested protocol.
864 * @kern set to 1 if a kernel socket.
866 * Check permission before socket protocol layer bind operation is
867 * performed and the socket @sock is bound to the address specified in the
868 * @address parameter.
869 * @sock contains the socket structure.
870 * @address contains the address to bind to.
871 * @addrlen contains the length of address.
872 * Return 0 if permission is granted.
874 * Check permission before socket protocol layer connect operation
875 * attempts to connect socket @sock to a remote address, @address.
876 * @sock contains the socket structure.
877 * @address contains the address of remote endpoint.
878 * @addrlen contains the length of address.
879 * Return 0 if permission is granted.
881 * Check permission before socket protocol layer listen operation.
882 * @sock contains the socket structure.
883 * @backlog contains the maximum length for the pending connection queue.
884 * Return 0 if permission is granted.
886 * Check permission before accepting a new connection. Note that the new
887 * socket, @newsock, has been created and some information copied to it,
888 * but the accept operation has not actually been performed.
889 * @sock contains the listening socket structure.
890 * @newsock contains the newly created server socket for connection.
891 * Return 0 if permission is granted.
893 * Check permission before transmitting a message to another socket.
894 * @sock contains the socket structure.
895 * @msg contains the message to be transmitted.
896 * @size contains the size of message.
897 * Return 0 if permission is granted.
899 * Check permission before receiving a message from a socket.
900 * @sock contains the socket structure.
901 * @msg contains the message structure.
902 * @size contains the size of message structure.
903 * @flags contains the operational flags.
904 * Return 0 if permission is granted.
905 * @socket_getsockname:
906 * Check permission before the local address (name) of the socket object
907 * @sock is retrieved.
908 * @sock contains the socket structure.
909 * Return 0 if permission is granted.
910 * @socket_getpeername:
911 * Check permission before the remote address (name) of a socket object
912 * @sock is retrieved.
913 * @sock contains the socket structure.
914 * Return 0 if permission is granted.
915 * @socket_getsockopt:
916 * Check permissions before retrieving the options associated with socket
918 * @sock contains the socket structure.
919 * @level contains the protocol level to retrieve option from.
920 * @optname contains the name of option to retrieve.
921 * Return 0 if permission is granted.
922 * @socket_setsockopt:
923 * Check permissions before setting the options associated with socket
925 * @sock contains the socket structure.
926 * @level contains the protocol level to set options for.
927 * @optname contains the name of the option to set.
928 * Return 0 if permission is granted.
930 * Checks permission before all or part of a connection on the socket
931 * @sock is shut down.
932 * @sock contains the socket structure.
933 * @how contains the flag indicating how future sends and receives are handled.
934 * Return 0 if permission is granted.
935 * @socket_sock_rcv_skb:
936 * Check permissions on incoming network packets. This hook is distinct
937 * from Netfilter's IP input hooks since it is the first time that the
938 * incoming sk_buff @skb has been associated with a particular socket, @sk.
939 * Must not sleep inside this hook because some callers hold spinlocks.
940 * @sk contains the sock (not socket) associated with the incoming sk_buff.
941 * @skb contains the incoming network data.
942 * @socket_getpeersec_stream:
943 * This hook allows the security module to provide peer socket security
944 * state for unix or connected tcp sockets to userspace via getsockopt
945 * SO_GETPEERSEC. For tcp sockets this can be meaningful if the
946 * socket is associated with an ipsec SA.
947 * @sock is the local socket.
948 * @optval userspace memory where the security state is to be copied.
949 * @optlen userspace int where the module should copy the actual length
950 * of the security state.
951 * @len as input is the maximum length to copy to userspace provided
953 * Return 0 if all is well, otherwise, typical getsockopt return
955 * @socket_getpeersec_dgram:
956 * This hook allows the security module to provide peer socket security
957 * state for udp sockets on a per-packet basis to userspace via
958 * getsockopt SO_GETPEERSEC. The application must first have indicated
959 * the IP_PASSSEC option via getsockopt. It can then retrieve the
960 * security state returned by this hook for a packet via the SCM_SECURITY
961 * ancillary message type.
962 * @skb is the skbuff for the packet being queried
963 * @secdata is a pointer to a buffer in which to copy the security data
964 * @seclen is the maximum length for @secdata
965 * Return 0 on success, error on failure.
966 * @sk_alloc_security:
967 * Allocate and attach a security structure to the sk->sk_security field,
968 * which is used to copy security attributes between local stream sockets.
970 * Deallocate security structure.
971 * @sk_clone_security:
972 * Clone/copy security structure.
974 * Retrieve the LSM-specific secid for the sock to enable caching of network
977 * Sets the socket's isec sid to the sock's sid.
978 * @inet_conn_request:
979 * Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
981 * Sets the new child socket's sid to the openreq sid.
982 * @inet_conn_established:
983 * Sets the connection's peersid to the secmark on skb.
984 * @secmark_relabel_packet:
985 * check if the process should be allowed to relabel packets to the given secid
986 * @security_secmark_refcount_inc
987 * tells the LSM to increment the number of secmark labeling rules loaded
988 * @security_secmark_refcount_dec
989 * tells the LSM to decrement the number of secmark labeling rules loaded
990 * @req_classify_flow:
991 * Sets the flow's sid to the openreq sid.
993 * Check permissions prior to creating a new TUN device.
994 * @tun_dev_post_create:
995 * This hook allows a module to update or allocate a per-socket security
997 * @sk contains the newly created sock structure.
999 * Check permissions prior to attaching to a persistent TUN device. This
1000 * hook can also be used by the module to update any security state
1001 * associated with the TUN device's sock structure.
1002 * @sk contains the existing sock structure.
1004 * Security hooks for XFRM operations.
1006 * @xfrm_policy_alloc_security:
1007 * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
1008 * Database used by the XFRM system.
1009 * @sec_ctx contains the security context information being provided by
1010 * the user-level policy update program (e.g., setkey).
1011 * Allocate a security structure to the xp->security field; the security
1012 * field is initialized to NULL when the xfrm_policy is allocated.
1013 * Return 0 if operation was successful (memory to allocate, legal context)
1014 * @xfrm_policy_clone_security:
1015 * @old_ctx contains an existing xfrm_sec_ctx.
1016 * @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
1017 * Allocate a security structure in new_ctxp that contains the
1018 * information from the old_ctx structure.
1019 * Return 0 if operation was successful (memory to allocate).
1020 * @xfrm_policy_free_security:
1021 * @ctx contains the xfrm_sec_ctx
1022 * Deallocate xp->security.
1023 * @xfrm_policy_delete_security:
1024 * @ctx contains the xfrm_sec_ctx.
1025 * Authorize deletion of xp->security.
1026 * @xfrm_state_alloc_security:
1027 * @x contains the xfrm_state being added to the Security Association
1028 * Database by the XFRM system.
1029 * @sec_ctx contains the security context information being provided by
1030 * the user-level SA generation program (e.g., setkey or racoon).
1031 * @secid contains the secid from which to take the mls portion of the context.
1032 * Allocate a security structure to the x->security field; the security
1033 * field is initialized to NULL when the xfrm_state is allocated. Set the
1034 * context to correspond to either sec_ctx or polsec, with the mls portion
1035 * taken from secid in the latter case.
1036 * Return 0 if operation was successful (memory to allocate, legal context).
1037 * @xfrm_state_free_security:
1038 * @x contains the xfrm_state.
1039 * Deallocate x->security.
1040 * @xfrm_state_delete_security:
1041 * @x contains the xfrm_state.
1042 * Authorize deletion of x->security.
1043 * @xfrm_policy_lookup:
1044 * @ctx contains the xfrm_sec_ctx for which the access control is being
1046 * @fl_secid contains the flow security label that is used to authorize
1047 * access to the policy xp.
1048 * @dir contains the direction of the flow (input or output).
1049 * Check permission when a flow selects a xfrm_policy for processing
1050 * XFRMs on a packet. The hook is called when selecting either a
1051 * per-socket policy or a generic xfrm policy.
1052 * Return 0 if permission is granted, -ESRCH otherwise, or -errno
1054 * @xfrm_state_pol_flow_match:
1055 * @x contains the state to match.
1056 * @xp contains the policy to check for a match.
1057 * @fl contains the flow to check for a match.
1058 * Return 1 if there is a match.
1059 * @xfrm_decode_session:
1060 * @skb points to skb to decode.
1061 * @secid points to the flow key secid to set.
1062 * @ckall says if all xfrms used should be checked for same secid.
1063 * Return 0 if ckall is zero or all xfrms used have the same secid.
1065 * Security hooks affecting all Key Management operations
1068 * Permit allocation of a key and assign security data. Note that key does
1069 * not have a serial number assigned at this point.
1070 * @key points to the key.
1071 * @flags is the allocation flags
1072 * Return 0 if permission is granted, -ve error otherwise.
1074 * Notification of destruction; free security data.
1075 * @key points to the key.
1078 * See whether a specific operational right is granted to a process on a
1080 * @key_ref refers to the key (key pointer + possession attribute bit).
1081 * @cred points to the credentials to provide the context against which to
1082 * evaluate the security data on the key.
1083 * @perm describes the combination of permissions required of this key.
1084 * Return 0 if permission is granted, -ve error otherwise.
1086 * Get a textual representation of the security context attached to a key
1087 * for the purposes of honouring KEYCTL_GETSECURITY. This function
1088 * allocates the storage for the NUL-terminated string and the caller
1090 * @key points to the key to be queried.
1091 * @_buffer points to a pointer that should be set to point to the
1092 * resulting string (if no label or an error occurs).
1093 * Return the length of the string (including terminating NUL) or -ve if
1095 * May also return 0 (and a NULL buffer pointer) if there is no label.
1097 * Security hooks affecting all System V IPC operations.
1100 * Check permissions for access to IPC
1101 * @ipcp contains the kernel IPC permission structure
1102 * @flag contains the desired (requested) permission set
1103 * Return 0 if permission is granted.
1105 * Get the secid associated with the ipc object.
1106 * @ipcp contains the kernel IPC permission structure.
1107 * @secid contains a pointer to the location where result will be saved.
1108 * In case of failure, @secid will be set to zero.
1110 * Security hooks for individual messages held in System V IPC message queues
1111 * @msg_msg_alloc_security:
1112 * Allocate and attach a security structure to the msg->security field.
1113 * The security field is initialized to NULL when the structure is first
1115 * @msg contains the message structure to be modified.
1116 * Return 0 if operation was successful and permission is granted.
1117 * @msg_msg_free_security:
1118 * Deallocate the security structure for this message.
1119 * @msg contains the message structure to be modified.
1121 * Security hooks for System V IPC Message Queues
1123 * @msg_queue_alloc_security:
1124 * Allocate and attach a security structure to the
1125 * msq->q_perm.security field. The security field is initialized to
1126 * NULL when the structure is first created.
1127 * @msq contains the message queue structure to be modified.
1128 * Return 0 if operation was successful and permission is granted.
1129 * @msg_queue_free_security:
1130 * Deallocate security structure for this message queue.
1131 * @msq contains the message queue structure to be modified.
1132 * @msg_queue_associate:
1133 * Check permission when a message queue is requested through the
1134 * msgget system call. This hook is only called when returning the
1135 * message queue identifier for an existing message queue, not when a
1136 * new message queue is created.
1137 * @msq contains the message queue to act upon.
1138 * @msqflg contains the operation control flags.
1139 * Return 0 if permission is granted.
1140 * @msg_queue_msgctl:
1141 * Check permission when a message control operation specified by @cmd
1142 * is to be performed on the message queue @msq.
1143 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
1144 * @msq contains the message queue to act upon. May be NULL.
1145 * @cmd contains the operation to be performed.
1146 * Return 0 if permission is granted.
1147 * @msg_queue_msgsnd:
1148 * Check permission before a message, @msg, is enqueued on the message
1150 * @msq contains the message queue to send message to.
1151 * @msg contains the message to be enqueued.
1152 * @msqflg contains operational flags.
1153 * Return 0 if permission is granted.
1154 * @msg_queue_msgrcv:
1155 * Check permission before a message, @msg, is removed from the message
1156 * queue, @msq. The @target task structure contains a pointer to the
1157 * process that will be receiving the message (not equal to the current
1158 * process when inline receives are being performed).
1159 * @msq contains the message queue to retrieve message from.
1160 * @msg contains the message destination.
1161 * @target contains the task structure for recipient process.
1162 * @type contains the type of message requested.
1163 * @mode contains the operational flags.
1164 * Return 0 if permission is granted.
1166 * Security hooks for System V Shared Memory Segments
1168 * @shm_alloc_security:
1169 * Allocate and attach a security structure to the shp->shm_perm.security
1170 * field. The security field is initialized to NULL when the structure is
1172 * @shp contains the shared memory structure to be modified.
1173 * Return 0 if operation was successful and permission is granted.
1174 * @shm_free_security:
1175 * Deallocate the security struct for this memory segment.
1176 * @shp contains the shared memory structure to be modified.
1178 * Check permission when a shared memory region is requested through the
1179 * shmget system call. This hook is only called when returning the shared
1180 * memory region identifier for an existing region, not when a new shared
1181 * memory region is created.
1182 * @shp contains the shared memory structure to be modified.
1183 * @shmflg contains the operation control flags.
1184 * Return 0 if permission is granted.
1186 * Check permission when a shared memory control operation specified by
1187 * @cmd is to be performed on the shared memory region @shp.
1188 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1189 * @shp contains shared memory structure to be modified.
1190 * @cmd contains the operation to be performed.
1191 * Return 0 if permission is granted.
1193 * Check permissions prior to allowing the shmat system call to attach the
1194 * shared memory segment @shp to the data segment of the calling process.
1195 * The attaching address is specified by @shmaddr.
1196 * @shp contains the shared memory structure to be modified.
1197 * @shmaddr contains the address to attach memory region to.
1198 * @shmflg contains the operational flags.
1199 * Return 0 if permission is granted.
1201 * Security hooks for System V Semaphores
1203 * @sem_alloc_security:
1204 * Allocate and attach a security structure to the sma->sem_perm.security
1205 * field. The security field is initialized to NULL when the structure is
1207 * @sma contains the semaphore structure
1208 * Return 0 if operation was successful and permission is granted.
1209 * @sem_free_security:
1210 * deallocate security struct for this semaphore
1211 * @sma contains the semaphore structure.
1213 * Check permission when a semaphore is requested through the semget
1214 * system call. This hook is only called when returning the semaphore
1215 * identifier for an existing semaphore, not when a new one must be
1217 * @sma contains the semaphore structure.
1218 * @semflg contains the operation control flags.
1219 * Return 0 if permission is granted.
1221 * Check permission when a semaphore operation specified by @cmd is to be
1222 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
1223 * IPC_INFO or SEM_INFO.
1224 * @sma contains the semaphore structure. May be NULL.
1225 * @cmd contains the operation to be performed.
1226 * Return 0 if permission is granted.
1228 * Check permissions before performing operations on members of the
1229 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1231 * @sma contains the semaphore structure.
1232 * @sops contains the operations to perform.
1233 * @nsops contains the number of operations to perform.
1234 * @alter contains the flag indicating whether changes are to be made.
1235 * Return 0 if permission is granted.
1237 * @ptrace_access_check:
1238 * Check permission before allowing the current process to trace the
1240 * Security modules may also want to perform a process tracing check
1241 * during an execve in the set_security or apply_creds hooks of
1242 * tracing check during an execve in the bprm_set_creds hook of
1243 * binprm_security_ops if the process is being traced and its security
1244 * attributes would be changed by the execve.
1245 * @child contains the task_struct structure for the target process.
1246 * @mode contains the PTRACE_MODE flags indicating the form of access.
1247 * Return 0 if permission is granted.
1249 * Check that the @parent process has sufficient permission to trace the
1250 * current process before allowing the current process to present itself
1251 * to the @parent process for tracing.
1252 * @parent contains the task_struct structure for debugger process.
1253 * Return 0 if permission is granted.
1255 * Get the @effective, @inheritable, and @permitted capability sets for
1256 * the @target process. The hook may also perform permission checking to
1257 * determine if the current process is allowed to see the capability sets
1258 * of the @target process.
1259 * @target contains the task_struct structure for target process.
1260 * @effective contains the effective capability set.
1261 * @inheritable contains the inheritable capability set.
1262 * @permitted contains the permitted capability set.
1263 * Return 0 if the capability sets were successfully obtained.
1265 * Set the @effective, @inheritable, and @permitted capability sets for
1266 * the current process.
1267 * @new contains the new credentials structure for target process.
1268 * @old contains the current credentials structure for target process.
1269 * @effective contains the effective capability set.
1270 * @inheritable contains the inheritable capability set.
1271 * @permitted contains the permitted capability set.
1272 * Return 0 and update @new if permission is granted.
1274 * Check whether the @tsk process has the @cap capability in the indicated
1276 * @cred contains the credentials to use.
1277 * @ns contains the user namespace we want the capability in
1278 * @cap contains the capability <include/linux/capability.h>.
1279 * @audit: Whether to write an audit message or not
1280 * Return 0 if the capability is granted for @tsk.
1282 * Check permission before accessing the kernel message ring or changing
1283 * logging to the console.
1284 * See the syslog(2) manual page for an explanation of the @type values.
1285 * @type contains the type of action.
1286 * @from_file indicates the context of action (if it came from /proc).
1287 * Return 0 if permission is granted.
1289 * Check permission to change the system time.
1290 * struct timespec and timezone are defined in include/linux/time.h
1291 * @ts contains new time
1292 * @tz contains new timezone
1293 * Return 0 if permission is granted.
1294 * @vm_enough_memory:
1295 * Check permissions for allocating a new virtual mapping.
1296 * @mm contains the mm struct it is being added to.
1297 * @pages contains the number of pages.
1298 * Return 0 if permission is granted.
1301 * Convert secid to security context. If secdata is NULL the length of
1302 * the result will be returned in seclen, but no secdata will be returned.
1303 * This does mean that the length could change between calls to check the
1304 * length and the next call which actually allocates and returns the secdata.
1305 * @secid contains the security ID.
1306 * @secdata contains the pointer that stores the converted security context.
1307 * @seclen pointer which contains the length of the data
1309 * Convert security context to secid.
1310 * @secid contains the pointer to the generated security ID.
1311 * @secdata contains the security context.
1314 * Release the security context.
1315 * @secdata contains the security context.
1316 * @seclen contains the length of the security context.
1318 * Security hooks for Audit
1321 * Allocate and initialize an LSM audit rule structure.
1322 * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
1323 * @op contains the operator the rule uses.
1324 * @rulestr contains the context where the rule will be applied to.
1325 * @lsmrule contains a pointer to receive the result.
1326 * Return 0 if @lsmrule has been successfully set,
1327 * -EINVAL in case of an invalid rule.
1329 * @audit_rule_known:
1330 * Specifies whether given @rule contains any fields related to current LSM.
1331 * @rule contains the audit rule of interest.
1332 * Return 1 in case of relation found, 0 otherwise.
1334 * @audit_rule_match:
1335 * Determine if given @secid matches a rule previously approved
1336 * by @audit_rule_known.
1337 * @secid contains the security id in question.
1338 * @field contains the field which relates to current LSM.
1339 * @op contains the operator that will be used for matching.
1340 * @rule points to the audit rule that will be checked against.
1341 * @actx points to the audit context associated with the check.
1342 * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
1345 * Deallocate the LSM audit rule structure previously allocated by
1347 * @rule contains the allocated rule
1349 * @inode_notifysecctx:
1350 * Notify the security module of what the security context of an inode
1351 * should be. Initializes the incore security context managed by the
1352 * security module for this inode. Example usage: NFS client invokes
1353 * this hook to initialize the security context in its incore inode to the
1354 * value provided by the server for the file when the server returned the
1355 * file's attributes to the client.
1357 * Must be called with inode->i_mutex locked.
1359 * @inode we wish to set the security context of.
1360 * @ctx contains the string which we wish to set in the inode.
1361 * @ctxlen contains the length of @ctx.
1364 * Change the security context of an inode. Updates the
1365 * incore security context managed by the security module and invokes the
1366 * fs code as needed (via __vfs_setxattr_noperm) to update any backing
1367 * xattrs that represent the context. Example usage: NFS server invokes
1368 * this hook to change the security context in its incore inode and on the
1369 * backing filesystem to a value provided by the client on a SETATTR
1372 * Must be called with inode->i_mutex locked.
1374 * @dentry contains the inode we wish to set the security context of.
1375 * @ctx contains the string which we wish to set in the inode.
1376 * @ctxlen contains the length of @ctx.
1379 * Returns a string containing all relevant security context information
1381 * @inode we wish to get the security context of.
1382 * @ctx is a pointer in which to place the allocated security context.
1383 * @ctxlen points to the place to put the length of @ctx.
1384 * This is the main security structure.
1386 struct security_operations {
1387 char name[SECURITY_NAME_MAX + 1];
1389 int (*ptrace_access_check) (struct task_struct *child, unsigned int mode);
1390 int (*ptrace_traceme) (struct task_struct *parent);
1391 int (*capget) (struct task_struct *target,
1392 kernel_cap_t *effective,
1393 kernel_cap_t *inheritable, kernel_cap_t *permitted);
1394 int (*capset) (struct cred *new,
1395 const struct cred *old,
1396 const kernel_cap_t *effective,
1397 const kernel_cap_t *inheritable,
1398 const kernel_cap_t *permitted);
1399 int (*capable) (const struct cred *cred, struct user_namespace *ns,
1400 int cap, int audit);
1401 int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
1402 int (*quota_on) (struct dentry *dentry);
1403 int (*syslog) (int type);
1404 int (*settime) (const struct timespec *ts, const struct timezone *tz);
1405 int (*vm_enough_memory) (struct mm_struct *mm, long pages);
1407 int (*bprm_set_creds) (struct linux_binprm *bprm);
1408 int (*bprm_check_security) (struct linux_binprm *bprm);
1409 int (*bprm_secureexec) (struct linux_binprm *bprm);
1410 void (*bprm_committing_creds) (struct linux_binprm *bprm);
1411 void (*bprm_committed_creds) (struct linux_binprm *bprm);
1413 int (*sb_alloc_security) (struct super_block *sb);
1414 void (*sb_free_security) (struct super_block *sb);
1415 int (*sb_copy_data) (char *orig, char *copy);
1416 int (*sb_remount) (struct super_block *sb, void *data);
1417 int (*sb_kern_mount) (struct super_block *sb, int flags, void *data);
1418 int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
1419 int (*sb_statfs) (struct dentry *dentry);
1420 int (*sb_mount) (const char *dev_name, struct path *path,
1421 const char *type, unsigned long flags, void *data);
1422 int (*sb_umount) (struct vfsmount *mnt, int flags);
1423 int (*sb_pivotroot) (struct path *old_path,
1424 struct path *new_path);
1425 int (*sb_set_mnt_opts) (struct super_block *sb,
1426 struct security_mnt_opts *opts);
1427 void (*sb_clone_mnt_opts) (const struct super_block *oldsb,
1428 struct super_block *newsb);
1429 int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
1431 #ifdef CONFIG_SECURITY_PATH
1432 int (*path_unlink) (struct path *dir, struct dentry *dentry);
1433 int (*path_mkdir) (struct path *dir, struct dentry *dentry, umode_t mode);
1434 int (*path_rmdir) (struct path *dir, struct dentry *dentry);
1435 int (*path_mknod) (struct path *dir, struct dentry *dentry, umode_t mode,
1437 int (*path_truncate) (struct path *path);
1438 int (*path_symlink) (struct path *dir, struct dentry *dentry,
1439 const char *old_name);
1440 int (*path_link) (struct dentry *old_dentry, struct path *new_dir,
1441 struct dentry *new_dentry);
1442 int (*path_rename) (struct path *old_dir, struct dentry *old_dentry,
1443 struct path *new_dir, struct dentry *new_dentry);
1444 int (*path_chmod) (struct path *path, umode_t mode);
1445 int (*path_chown) (struct path *path, kuid_t uid, kgid_t gid);
1446 int (*path_chroot) (struct path *path);
1449 int (*inode_alloc_security) (struct inode *inode);
1450 void (*inode_free_security) (struct inode *inode);
1451 int (*inode_init_security) (struct inode *inode, struct inode *dir,
1452 const struct qstr *qstr, char **name,
1453 void **value, size_t *len);
1454 int (*inode_create) (struct inode *dir,
1455 struct dentry *dentry, umode_t mode);
1456 int (*inode_link) (struct dentry *old_dentry,
1457 struct inode *dir, struct dentry *new_dentry);
1458 int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
1459 int (*inode_symlink) (struct inode *dir,
1460 struct dentry *dentry, const char *old_name);
1461 int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, umode_t mode);
1462 int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
1463 int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
1464 umode_t mode, dev_t dev);
1465 int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
1466 struct inode *new_dir, struct dentry *new_dentry);
1467 int (*inode_readlink) (struct dentry *dentry);
1468 int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
1469 int (*inode_permission) (struct inode *inode, int mask);
1470 int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
1471 int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
1472 int (*inode_setxattr) (struct dentry *dentry, const char *name,
1473 const void *value, size_t size, int flags);
1474 void (*inode_post_setxattr) (struct dentry *dentry, const char *name,
1475 const void *value, size_t size, int flags);
1476 int (*inode_getxattr) (struct dentry *dentry, const char *name);
1477 int (*inode_listxattr) (struct dentry *dentry);
1478 int (*inode_removexattr) (struct dentry *dentry, const char *name);
1479 int (*inode_need_killpriv) (struct dentry *dentry);
1480 int (*inode_killpriv) (struct dentry *dentry);
1481 int (*inode_getsecurity) (const struct inode *inode, const char *name, void **buffer, bool alloc);
1482 int (*inode_setsecurity) (struct inode *inode, const char *name, const void *value, size_t size, int flags);
1483 int (*inode_listsecurity) (struct inode *inode, char *buffer, size_t buffer_size);
1484 void (*inode_getsecid) (const struct inode *inode, u32 *secid);
1486 int (*file_permission) (struct file *file, int mask);
1487 int (*file_alloc_security) (struct file *file);
1488 void (*file_free_security) (struct file *file);
1489 int (*file_ioctl) (struct file *file, unsigned int cmd,
1491 int (*mmap_addr) (unsigned long addr);
1492 int (*mmap_file) (struct file *file,
1493 unsigned long reqprot, unsigned long prot,
1494 unsigned long flags);
1495 int (*file_mprotect) (struct vm_area_struct *vma,
1496 unsigned long reqprot,
1497 unsigned long prot);
1498 int (*file_lock) (struct file *file, unsigned int cmd);
1499 int (*file_fcntl) (struct file *file, unsigned int cmd,
1501 int (*file_set_fowner) (struct file *file);
1502 int (*file_send_sigiotask) (struct task_struct *tsk,
1503 struct fown_struct *fown, int sig);
1504 int (*file_receive) (struct file *file);
1505 int (*file_open) (struct file *file, const struct cred *cred);
1507 int (*task_create) (unsigned long clone_flags);
1508 void (*task_free) (struct task_struct *task);
1509 int (*cred_alloc_blank) (struct cred *cred, gfp_t gfp);
1510 void (*cred_free) (struct cred *cred);
1511 int (*cred_prepare)(struct cred *new, const struct cred *old,
1513 void (*cred_transfer)(struct cred *new, const struct cred *old);
1514 int (*kernel_act_as)(struct cred *new, u32 secid);
1515 int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
1516 int (*kernel_module_request)(char *kmod_name);
1517 int (*kernel_module_from_file)(struct file *file);
1518 int (*task_fix_setuid) (struct cred *new, const struct cred *old,
1520 int (*task_setpgid) (struct task_struct *p, pid_t pgid);
1521 int (*task_getpgid) (struct task_struct *p);
1522 int (*task_getsid) (struct task_struct *p);
1523 void (*task_getsecid) (struct task_struct *p, u32 *secid);
1524 int (*task_setnice) (struct task_struct *p, int nice);
1525 int (*task_setioprio) (struct task_struct *p, int ioprio);
1526 int (*task_getioprio) (struct task_struct *p);
1527 int (*task_setrlimit) (struct task_struct *p, unsigned int resource,
1528 struct rlimit *new_rlim);
1529 int (*task_setscheduler) (struct task_struct *p);
1530 int (*task_getscheduler) (struct task_struct *p);
1531 int (*task_movememory) (struct task_struct *p);
1532 int (*task_kill) (struct task_struct *p,
1533 struct siginfo *info, int sig, u32 secid);
1534 int (*task_wait) (struct task_struct *p);
1535 int (*task_prctl) (int option, unsigned long arg2,
1536 unsigned long arg3, unsigned long arg4,
1537 unsigned long arg5);
1538 void (*task_to_inode) (struct task_struct *p, struct inode *inode);
1540 int (*ipc_permission) (struct kern_ipc_perm *ipcp, short flag);
1541 void (*ipc_getsecid) (struct kern_ipc_perm *ipcp, u32 *secid);
1543 int (*msg_msg_alloc_security) (struct msg_msg *msg);
1544 void (*msg_msg_free_security) (struct msg_msg *msg);
1546 int (*msg_queue_alloc_security) (struct msg_queue *msq);
1547 void (*msg_queue_free_security) (struct msg_queue *msq);
1548 int (*msg_queue_associate) (struct msg_queue *msq, int msqflg);
1549 int (*msg_queue_msgctl) (struct msg_queue *msq, int cmd);
1550 int (*msg_queue_msgsnd) (struct msg_queue *msq,
1551 struct msg_msg *msg, int msqflg);
1552 int (*msg_queue_msgrcv) (struct msg_queue *msq,
1553 struct msg_msg *msg,
1554 struct task_struct *target,
1555 long type, int mode);
1557 int (*shm_alloc_security) (struct shmid_kernel *shp);
1558 void (*shm_free_security) (struct shmid_kernel *shp);
1559 int (*shm_associate) (struct shmid_kernel *shp, int shmflg);
1560 int (*shm_shmctl) (struct shmid_kernel *shp, int cmd);
1561 int (*shm_shmat) (struct shmid_kernel *shp,
1562 char __user *shmaddr, int shmflg);
1564 int (*sem_alloc_security) (struct sem_array *sma);
1565 void (*sem_free_security) (struct sem_array *sma);
1566 int (*sem_associate) (struct sem_array *sma, int semflg);
1567 int (*sem_semctl) (struct sem_array *sma, int cmd);
1568 int (*sem_semop) (struct sem_array *sma,
1569 struct sembuf *sops, unsigned nsops, int alter);
1571 int (*netlink_send) (struct sock *sk, struct sk_buff *skb);
1573 void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1575 int (*getprocattr) (struct task_struct *p, char *name, char **value);
1576 int (*setprocattr) (struct task_struct *p, char *name, void *value, size_t size);
1577 int (*secid_to_secctx) (u32 secid, char **secdata, u32 *seclen);
1578 int (*secctx_to_secid) (const char *secdata, u32 seclen, u32 *secid);
1579 void (*release_secctx) (char *secdata, u32 seclen);
1581 int (*inode_notifysecctx)(struct inode *inode, void *ctx, u32 ctxlen);
1582 int (*inode_setsecctx)(struct dentry *dentry, void *ctx, u32 ctxlen);
1583 int (*inode_getsecctx)(struct inode *inode, void **ctx, u32 *ctxlen);
1585 #ifdef CONFIG_SECURITY_NETWORK
1586 int (*unix_stream_connect) (struct sock *sock, struct sock *other, struct sock *newsk);
1587 int (*unix_may_send) (struct socket *sock, struct socket *other);
1589 int (*socket_create) (int family, int type, int protocol, int kern);
1590 int (*socket_post_create) (struct socket *sock, int family,
1591 int type, int protocol, int kern);
1592 int (*socket_bind) (struct socket *sock,
1593 struct sockaddr *address, int addrlen);
1594 int (*socket_connect) (struct socket *sock,
1595 struct sockaddr *address, int addrlen);
1596 int (*socket_listen) (struct socket *sock, int backlog);
1597 int (*socket_accept) (struct socket *sock, struct socket *newsock);
1598 int (*socket_sendmsg) (struct socket *sock,
1599 struct msghdr *msg, int size);
1600 int (*socket_recvmsg) (struct socket *sock,
1601 struct msghdr *msg, int size, int flags);
1602 int (*socket_getsockname) (struct socket *sock);
1603 int (*socket_getpeername) (struct socket *sock);
1604 int (*socket_getsockopt) (struct socket *sock, int level, int optname);
1605 int (*socket_setsockopt) (struct socket *sock, int level, int optname);
1606 int (*socket_shutdown) (struct socket *sock, int how);
1607 int (*socket_sock_rcv_skb) (struct sock *sk, struct sk_buff *skb);
1608 int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
1609 int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
1610 int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
1611 void (*sk_free_security) (struct sock *sk);
1612 void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
1613 void (*sk_getsecid) (struct sock *sk, u32 *secid);
1614 void (*sock_graft) (struct sock *sk, struct socket *parent);
1615 int (*inet_conn_request) (struct sock *sk, struct sk_buff *skb,
1616 struct request_sock *req);
1617 void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req);
1618 void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb);
1619 int (*secmark_relabel_packet) (u32 secid);
1620 void (*secmark_refcount_inc) (void);
1621 void (*secmark_refcount_dec) (void);
1622 void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
1623 int (*tun_dev_create)(void);
1624 void (*tun_dev_post_create)(struct sock *sk);
1625 int (*tun_dev_attach)(struct sock *sk);
1626 #endif /* CONFIG_SECURITY_NETWORK */
1628 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1629 int (*xfrm_policy_alloc_security) (struct xfrm_sec_ctx **ctxp,
1630 struct xfrm_user_sec_ctx *sec_ctx);
1631 int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
1632 void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
1633 int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
1634 int (*xfrm_state_alloc_security) (struct xfrm_state *x,
1635 struct xfrm_user_sec_ctx *sec_ctx,
1637 void (*xfrm_state_free_security) (struct xfrm_state *x);
1638 int (*xfrm_state_delete_security) (struct xfrm_state *x);
1639 int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1640 int (*xfrm_state_pol_flow_match) (struct xfrm_state *x,
1641 struct xfrm_policy *xp,
1642 const struct flowi *fl);
1643 int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall);
1644 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1646 /* key management security hooks */
1648 int (*key_alloc) (struct key *key, const struct cred *cred, unsigned long flags);
1649 void (*key_free) (struct key *key);
1650 int (*key_permission) (key_ref_t key_ref,
1651 const struct cred *cred,
1653 int (*key_getsecurity)(struct key *key, char **_buffer);
1654 #endif /* CONFIG_KEYS */
1657 int (*audit_rule_init) (u32 field, u32 op, char *rulestr, void **lsmrule);
1658 int (*audit_rule_known) (struct audit_krule *krule);
1659 int (*audit_rule_match) (u32 secid, u32 field, u32 op, void *lsmrule,
1660 struct audit_context *actx);
1661 void (*audit_rule_free) (void *lsmrule);
1662 #endif /* CONFIG_AUDIT */
1666 extern int security_init(void);
1667 extern int security_module_enable(struct security_operations *ops);
1668 extern int register_security(struct security_operations *ops);
1669 extern void __init security_fixup_ops(struct security_operations *ops);
1672 /* Security operations */
1673 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
1674 int security_ptrace_traceme(struct task_struct *parent);
1675 int security_capget(struct task_struct *target,
1676 kernel_cap_t *effective,
1677 kernel_cap_t *inheritable,
1678 kernel_cap_t *permitted);
1679 int security_capset(struct cred *new, const struct cred *old,
1680 const kernel_cap_t *effective,
1681 const kernel_cap_t *inheritable,
1682 const kernel_cap_t *permitted);
1683 int security_capable(const struct cred *cred, struct user_namespace *ns,
1685 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
1687 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
1688 int security_quota_on(struct dentry *dentry);
1689 int security_syslog(int type);
1690 int security_settime(const struct timespec *ts, const struct timezone *tz);
1691 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
1692 int security_bprm_set_creds(struct linux_binprm *bprm);
1693 int security_bprm_check(struct linux_binprm *bprm);
1694 void security_bprm_committing_creds(struct linux_binprm *bprm);
1695 void security_bprm_committed_creds(struct linux_binprm *bprm);
1696 int security_bprm_secureexec(struct linux_binprm *bprm);
1697 int security_sb_alloc(struct super_block *sb);
1698 void security_sb_free(struct super_block *sb);
1699 int security_sb_copy_data(char *orig, char *copy);
1700 int security_sb_remount(struct super_block *sb, void *data);
1701 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
1702 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
1703 int security_sb_statfs(struct dentry *dentry);
1704 int security_sb_mount(const char *dev_name, struct path *path,
1705 const char *type, unsigned long flags, void *data);
1706 int security_sb_umount(struct vfsmount *mnt, int flags);
1707 int security_sb_pivotroot(struct path *old_path, struct path *new_path);
1708 int security_sb_set_mnt_opts(struct super_block *sb, struct security_mnt_opts *opts);
1709 void security_sb_clone_mnt_opts(const struct super_block *oldsb,
1710 struct super_block *newsb);
1711 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
1713 int security_inode_alloc(struct inode *inode);
1714 void security_inode_free(struct inode *inode);
1715 int security_inode_init_security(struct inode *inode, struct inode *dir,
1716 const struct qstr *qstr,
1717 initxattrs initxattrs, void *fs_data);
1718 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
1719 const struct qstr *qstr, char **name,
1720 void **value, size_t *len);
1721 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
1722 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1723 struct dentry *new_dentry);
1724 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
1725 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
1726 const char *old_name);
1727 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
1728 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
1729 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
1730 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
1731 struct inode *new_dir, struct dentry *new_dentry);
1732 int security_inode_readlink(struct dentry *dentry);
1733 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
1734 int security_inode_permission(struct inode *inode, int mask);
1735 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
1736 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
1737 int security_inode_setxattr(struct dentry *dentry, const char *name,
1738 const void *value, size_t size, int flags);
1739 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1740 const void *value, size_t size, int flags);
1741 int security_inode_getxattr(struct dentry *dentry, const char *name);
1742 int security_inode_listxattr(struct dentry *dentry);
1743 int security_inode_removexattr(struct dentry *dentry, const char *name);
1744 int security_inode_need_killpriv(struct dentry *dentry);
1745 int security_inode_killpriv(struct dentry *dentry);
1746 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
1747 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1748 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
1749 void security_inode_getsecid(const struct inode *inode, u32 *secid);
1750 int security_file_permission(struct file *file, int mask);
1751 int security_file_alloc(struct file *file);
1752 void security_file_free(struct file *file);
1753 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
1754 int security_mmap_file(struct file *file, unsigned long prot,
1755 unsigned long flags);
1756 int security_mmap_addr(unsigned long addr);
1757 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1758 unsigned long prot);
1759 int security_file_lock(struct file *file, unsigned int cmd);
1760 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
1761 int security_file_set_fowner(struct file *file);
1762 int security_file_send_sigiotask(struct task_struct *tsk,
1763 struct fown_struct *fown, int sig);
1764 int security_file_receive(struct file *file);
1765 int security_file_open(struct file *file, const struct cred *cred);
1766 int security_task_create(unsigned long clone_flags);
1767 void security_task_free(struct task_struct *task);
1768 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
1769 void security_cred_free(struct cred *cred);
1770 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
1771 void security_transfer_creds(struct cred *new, const struct cred *old);
1772 int security_kernel_act_as(struct cred *new, u32 secid);
1773 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
1774 int security_kernel_module_request(char *kmod_name);
1775 int security_kernel_module_from_file(struct file *file);
1776 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1778 int security_task_setpgid(struct task_struct *p, pid_t pgid);
1779 int security_task_getpgid(struct task_struct *p);
1780 int security_task_getsid(struct task_struct *p);
1781 void security_task_getsecid(struct task_struct *p, u32 *secid);
1782 int security_task_setnice(struct task_struct *p, int nice);
1783 int security_task_setioprio(struct task_struct *p, int ioprio);
1784 int security_task_getioprio(struct task_struct *p);
1785 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
1786 struct rlimit *new_rlim);
1787 int security_task_setscheduler(struct task_struct *p);
1788 int security_task_getscheduler(struct task_struct *p);
1789 int security_task_movememory(struct task_struct *p);
1790 int security_task_kill(struct task_struct *p, struct siginfo *info,
1791 int sig, u32 secid);
1792 int security_task_wait(struct task_struct *p);
1793 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1794 unsigned long arg4, unsigned long arg5);
1795 void security_task_to_inode(struct task_struct *p, struct inode *inode);
1796 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
1797 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
1798 int security_msg_msg_alloc(struct msg_msg *msg);
1799 void security_msg_msg_free(struct msg_msg *msg);
1800 int security_msg_queue_alloc(struct msg_queue *msq);
1801 void security_msg_queue_free(struct msg_queue *msq);
1802 int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
1803 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
1804 int security_msg_queue_msgsnd(struct msg_queue *msq,
1805 struct msg_msg *msg, int msqflg);
1806 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1807 struct task_struct *target, long type, int mode);
1808 int security_shm_alloc(struct shmid_kernel *shp);
1809 void security_shm_free(struct shmid_kernel *shp);
1810 int security_shm_associate(struct shmid_kernel *shp, int shmflg);
1811 int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
1812 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
1813 int security_sem_alloc(struct sem_array *sma);
1814 void security_sem_free(struct sem_array *sma);
1815 int security_sem_associate(struct sem_array *sma, int semflg);
1816 int security_sem_semctl(struct sem_array *sma, int cmd);
1817 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1818 unsigned nsops, int alter);
1819 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
1820 int security_getprocattr(struct task_struct *p, char *name, char **value);
1821 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
1822 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
1823 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
1824 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
1825 void security_release_secctx(char *secdata, u32 seclen);
1827 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
1828 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
1829 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
1830 #else /* CONFIG_SECURITY */
1831 struct security_mnt_opts {
1834 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
1838 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
1843 * This is the default capabilities functionality. Most of these functions
1844 * are just stubbed out, but a few must call the proper capable code.
1847 static inline int security_init(void)
1852 static inline int security_ptrace_access_check(struct task_struct *child,
1855 return cap_ptrace_access_check(child, mode);
1858 static inline int security_ptrace_traceme(struct task_struct *parent)
1860 return cap_ptrace_traceme(parent);
1863 static inline int security_capget(struct task_struct *target,
1864 kernel_cap_t *effective,
1865 kernel_cap_t *inheritable,
1866 kernel_cap_t *permitted)
1868 return cap_capget(target, effective, inheritable, permitted);
1871 static inline int security_capset(struct cred *new,
1872 const struct cred *old,
1873 const kernel_cap_t *effective,
1874 const kernel_cap_t *inheritable,
1875 const kernel_cap_t *permitted)
1877 return cap_capset(new, old, effective, inheritable, permitted);
1880 static inline int security_capable(const struct cred *cred,
1881 struct user_namespace *ns, int cap)
1883 return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT);
1886 static inline int security_capable_noaudit(const struct cred *cred,
1887 struct user_namespace *ns, int cap) {
1888 return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
1891 static inline int security_quotactl(int cmds, int type, int id,
1892 struct super_block *sb)
1897 static inline int security_quota_on(struct dentry *dentry)
1902 static inline int security_syslog(int type)
1907 static inline int security_settime(const struct timespec *ts,
1908 const struct timezone *tz)
1910 return cap_settime(ts, tz);
1913 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
1915 return cap_vm_enough_memory(mm, pages);
1918 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
1920 return cap_bprm_set_creds(bprm);
1923 static inline int security_bprm_check(struct linux_binprm *bprm)
1928 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
1932 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
1936 static inline int security_bprm_secureexec(struct linux_binprm *bprm)
1938 return cap_bprm_secureexec(bprm);
1941 static inline int security_sb_alloc(struct super_block *sb)
1946 static inline void security_sb_free(struct super_block *sb)
1949 static inline int security_sb_copy_data(char *orig, char *copy)
1954 static inline int security_sb_remount(struct super_block *sb, void *data)
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(const char *dev_name, struct path *path,
1976 const 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,
2018 const struct qstr *qstr,
2019 const initxattrs initxattrs,
2025 static inline int security_old_inode_init_security(struct inode *inode,
2027 const struct qstr *qstr,
2028 char **name, void **value,
2034 static inline int security_inode_create(struct inode *dir,
2035 struct dentry *dentry,
2041 static inline int security_inode_link(struct dentry *old_dentry,
2043 struct dentry *new_dentry)
2048 static inline int security_inode_unlink(struct inode *dir,
2049 struct dentry *dentry)
2054 static inline int security_inode_symlink(struct inode *dir,
2055 struct dentry *dentry,
2056 const char *old_name)
2061 static inline int security_inode_mkdir(struct inode *dir,
2062 struct dentry *dentry,
2068 static inline int security_inode_rmdir(struct inode *dir,
2069 struct dentry *dentry)
2074 static inline int security_inode_mknod(struct inode *dir,
2075 struct dentry *dentry,
2076 int mode, dev_t dev)
2081 static inline int security_inode_rename(struct inode *old_dir,
2082 struct dentry *old_dentry,
2083 struct inode *new_dir,
2084 struct dentry *new_dentry)
2089 static inline int security_inode_readlink(struct dentry *dentry)
2094 static inline int security_inode_follow_link(struct dentry *dentry,
2095 struct nameidata *nd)
2100 static inline int security_inode_permission(struct inode *inode, int mask)
2105 static inline int security_inode_setattr(struct dentry *dentry,
2111 static inline int security_inode_getattr(struct vfsmount *mnt,
2112 struct dentry *dentry)
2117 static inline int security_inode_setxattr(struct dentry *dentry,
2118 const char *name, const void *value, size_t size, int flags)
2120 return cap_inode_setxattr(dentry, name, value, size, flags);
2123 static inline void security_inode_post_setxattr(struct dentry *dentry,
2124 const char *name, const void *value, size_t size, int flags)
2127 static inline int security_inode_getxattr(struct dentry *dentry,
2133 static inline int security_inode_listxattr(struct dentry *dentry)
2138 static inline int security_inode_removexattr(struct dentry *dentry,
2141 return cap_inode_removexattr(dentry, name);
2144 static inline int security_inode_need_killpriv(struct dentry *dentry)
2146 return cap_inode_need_killpriv(dentry);
2149 static inline int security_inode_killpriv(struct dentry *dentry)
2151 return cap_inode_killpriv(dentry);
2154 static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
2159 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
2164 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
2169 static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
2174 static inline int security_file_permission(struct file *file, int mask)
2179 static inline int security_file_alloc(struct file *file)
2184 static inline void security_file_free(struct file *file)
2187 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
2193 static inline int security_mmap_file(struct file *file, unsigned long prot,
2194 unsigned long flags)
2199 static inline int security_mmap_addr(unsigned long addr)
2201 return cap_mmap_addr(addr);
2204 static inline int security_file_mprotect(struct vm_area_struct *vma,
2205 unsigned long reqprot,
2211 static inline int security_file_lock(struct file *file, unsigned int cmd)
2216 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
2222 static inline int security_file_set_fowner(struct file *file)
2227 static inline int security_file_send_sigiotask(struct task_struct *tsk,
2228 struct fown_struct *fown,
2234 static inline int security_file_receive(struct file *file)
2239 static inline int security_file_open(struct file *file,
2240 const struct cred *cred)
2245 static inline int security_task_create(unsigned long clone_flags)
2250 static inline void security_task_free(struct task_struct *task)
2253 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
2258 static inline void security_cred_free(struct cred *cred)
2261 static inline int security_prepare_creds(struct cred *new,
2262 const struct cred *old,
2268 static inline void security_transfer_creds(struct cred *new,
2269 const struct cred *old)
2273 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
2278 static inline int security_kernel_create_files_as(struct cred *cred,
2279 struct inode *inode)
2284 static inline int security_kernel_module_request(char *kmod_name)
2289 static inline int security_kernel_module_from_file(struct file *file)
2294 static inline int security_task_fix_setuid(struct cred *new,
2295 const struct cred *old,
2298 return cap_task_fix_setuid(new, old, flags);
2301 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
2306 static inline int security_task_getpgid(struct task_struct *p)
2311 static inline int security_task_getsid(struct task_struct *p)
2316 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
2321 static inline int security_task_setnice(struct task_struct *p, int nice)
2323 return cap_task_setnice(p, nice);
2326 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
2328 return cap_task_setioprio(p, ioprio);
2331 static inline int security_task_getioprio(struct task_struct *p)
2336 static inline int security_task_setrlimit(struct task_struct *p,
2337 unsigned int resource,
2338 struct rlimit *new_rlim)
2343 static inline int security_task_setscheduler(struct task_struct *p)
2345 return cap_task_setscheduler(p);
2348 static inline int security_task_getscheduler(struct task_struct *p)
2353 static inline int security_task_movememory(struct task_struct *p)
2358 static inline int security_task_kill(struct task_struct *p,
2359 struct siginfo *info, int sig,
2365 static inline int security_task_wait(struct task_struct *p)
2370 static inline int security_task_prctl(int option, unsigned long arg2,
2375 return cap_task_prctl(option, arg2, arg3, arg3, arg5);
2378 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
2381 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
2387 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
2392 static inline int security_msg_msg_alloc(struct msg_msg *msg)
2397 static inline void security_msg_msg_free(struct msg_msg *msg)
2400 static inline int security_msg_queue_alloc(struct msg_queue *msq)
2405 static inline void security_msg_queue_free(struct msg_queue *msq)
2408 static inline int security_msg_queue_associate(struct msg_queue *msq,
2414 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
2419 static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
2420 struct msg_msg *msg, int msqflg)
2425 static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
2426 struct msg_msg *msg,
2427 struct task_struct *target,
2428 long type, int mode)
2433 static inline int security_shm_alloc(struct shmid_kernel *shp)
2438 static inline void security_shm_free(struct shmid_kernel *shp)
2441 static inline int security_shm_associate(struct shmid_kernel *shp,
2447 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
2452 static inline int security_shm_shmat(struct shmid_kernel *shp,
2453 char __user *shmaddr, int shmflg)
2458 static inline int security_sem_alloc(struct sem_array *sma)
2463 static inline void security_sem_free(struct sem_array *sma)
2466 static inline int security_sem_associate(struct sem_array *sma, int semflg)
2471 static inline int security_sem_semctl(struct sem_array *sma, int cmd)
2476 static inline int security_sem_semop(struct sem_array *sma,
2477 struct sembuf *sops, unsigned nsops,
2483 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
2486 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
2491 static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2496 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
2498 return cap_netlink_send(sk, skb);
2501 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2506 static inline int security_secctx_to_secid(const char *secdata,
2513 static inline void security_release_secctx(char *secdata, u32 seclen)
2517 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
2521 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
2525 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
2529 #endif /* CONFIG_SECURITY */
2531 #ifdef CONFIG_SECURITY_NETWORK
2533 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
2534 int security_unix_may_send(struct socket *sock, struct socket *other);
2535 int security_socket_create(int family, int type, int protocol, int kern);
2536 int security_socket_post_create(struct socket *sock, int family,
2537 int type, int protocol, int kern);
2538 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
2539 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
2540 int security_socket_listen(struct socket *sock, int backlog);
2541 int security_socket_accept(struct socket *sock, struct socket *newsock);
2542 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
2543 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2544 int size, int flags);
2545 int security_socket_getsockname(struct socket *sock);
2546 int security_socket_getpeername(struct socket *sock);
2547 int security_socket_getsockopt(struct socket *sock, int level, int optname);
2548 int security_socket_setsockopt(struct socket *sock, int level, int optname);
2549 int security_socket_shutdown(struct socket *sock, int how);
2550 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
2551 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2552 int __user *optlen, unsigned len);
2553 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
2554 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
2555 void security_sk_free(struct sock *sk);
2556 void security_sk_clone(const struct sock *sk, struct sock *newsk);
2557 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
2558 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
2559 void security_sock_graft(struct sock*sk, struct socket *parent);
2560 int security_inet_conn_request(struct sock *sk,
2561 struct sk_buff *skb, struct request_sock *req);
2562 void security_inet_csk_clone(struct sock *newsk,
2563 const struct request_sock *req);
2564 void security_inet_conn_established(struct sock *sk,
2565 struct sk_buff *skb);
2566 int security_secmark_relabel_packet(u32 secid);
2567 void security_secmark_refcount_inc(void);
2568 void security_secmark_refcount_dec(void);
2569 int security_tun_dev_create(void);
2570 void security_tun_dev_post_create(struct sock *sk);
2571 int security_tun_dev_attach(struct sock *sk);
2573 #else /* CONFIG_SECURITY_NETWORK */
2574 static inline int security_unix_stream_connect(struct sock *sock,
2581 static inline int security_unix_may_send(struct socket *sock,
2582 struct socket *other)
2587 static inline int security_socket_create(int family, int type,
2588 int protocol, int kern)
2593 static inline int security_socket_post_create(struct socket *sock,
2596 int protocol, int kern)
2601 static inline int security_socket_bind(struct socket *sock,
2602 struct sockaddr *address,
2608 static inline int security_socket_connect(struct socket *sock,
2609 struct sockaddr *address,
2615 static inline int security_socket_listen(struct socket *sock, int backlog)
2620 static inline int security_socket_accept(struct socket *sock,
2621 struct socket *newsock)
2626 static inline int security_socket_sendmsg(struct socket *sock,
2627 struct msghdr *msg, int size)
2632 static inline int security_socket_recvmsg(struct socket *sock,
2633 struct msghdr *msg, int size,
2639 static inline int security_socket_getsockname(struct socket *sock)
2644 static inline int security_socket_getpeername(struct socket *sock)
2649 static inline int security_socket_getsockopt(struct socket *sock,
2650 int level, int optname)
2655 static inline int security_socket_setsockopt(struct socket *sock,
2656 int level, int optname)
2661 static inline int security_socket_shutdown(struct socket *sock, int how)
2665 static inline int security_sock_rcv_skb(struct sock *sk,
2666 struct sk_buff *skb)
2671 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2672 int __user *optlen, unsigned len)
2674 return -ENOPROTOOPT;
2677 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
2679 return -ENOPROTOOPT;
2682 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2687 static inline void security_sk_free(struct sock *sk)
2691 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
2695 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
2699 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2703 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
2707 static inline int security_inet_conn_request(struct sock *sk,
2708 struct sk_buff *skb, struct request_sock *req)
2713 static inline void security_inet_csk_clone(struct sock *newsk,
2714 const struct request_sock *req)
2718 static inline void security_inet_conn_established(struct sock *sk,
2719 struct sk_buff *skb)
2723 static inline int security_secmark_relabel_packet(u32 secid)
2728 static inline void security_secmark_refcount_inc(void)
2732 static inline void security_secmark_refcount_dec(void)
2736 static inline int security_tun_dev_create(void)
2741 static inline void security_tun_dev_post_create(struct sock *sk)
2745 static inline int security_tun_dev_attach(struct sock *sk)
2749 #endif /* CONFIG_SECURITY_NETWORK */
2751 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2753 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx);
2754 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
2755 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
2756 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
2757 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
2758 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2759 struct xfrm_sec_ctx *polsec, u32 secid);
2760 int security_xfrm_state_delete(struct xfrm_state *x);
2761 void security_xfrm_state_free(struct xfrm_state *x);
2762 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
2763 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2764 struct xfrm_policy *xp,
2765 const struct flowi *fl);
2766 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
2767 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
2769 #else /* CONFIG_SECURITY_NETWORK_XFRM */
2771 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
2776 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
2781 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
2785 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
2790 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
2791 struct xfrm_user_sec_ctx *sec_ctx)
2796 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2797 struct xfrm_sec_ctx *polsec, u32 secid)
2802 static inline void security_xfrm_state_free(struct xfrm_state *x)
2806 static inline int security_xfrm_state_delete(struct xfrm_state *x)
2811 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
2816 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2817 struct xfrm_policy *xp, const struct flowi *fl)
2822 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
2827 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2831 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2833 #ifdef CONFIG_SECURITY_PATH
2834 int security_path_unlink(struct path *dir, struct dentry *dentry);
2835 int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode);
2836 int security_path_rmdir(struct path *dir, struct dentry *dentry);
2837 int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode,
2839 int security_path_truncate(struct path *path);
2840 int security_path_symlink(struct path *dir, struct dentry *dentry,
2841 const char *old_name);
2842 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
2843 struct dentry *new_dentry);
2844 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
2845 struct path *new_dir, struct dentry *new_dentry);
2846 int security_path_chmod(struct path *path, umode_t mode);
2847 int security_path_chown(struct path *path, kuid_t uid, kgid_t gid);
2848 int security_path_chroot(struct path *path);
2849 #else /* CONFIG_SECURITY_PATH */
2850 static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
2855 static inline int security_path_mkdir(struct path *dir, struct dentry *dentry,
2861 static inline int security_path_rmdir(struct path *dir, struct dentry *dentry)
2866 static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
2867 umode_t mode, unsigned int dev)
2872 static inline int security_path_truncate(struct path *path)
2877 static inline int security_path_symlink(struct path *dir, struct dentry *dentry,
2878 const char *old_name)
2883 static inline int security_path_link(struct dentry *old_dentry,
2884 struct path *new_dir,
2885 struct dentry *new_dentry)
2890 static inline int security_path_rename(struct path *old_dir,
2891 struct dentry *old_dentry,
2892 struct path *new_dir,
2893 struct dentry *new_dentry)
2898 static inline int security_path_chmod(struct path *path, umode_t mode)
2903 static inline int security_path_chown(struct path *path, kuid_t uid, kgid_t gid)
2908 static inline int security_path_chroot(struct path *path)
2912 #endif /* CONFIG_SECURITY_PATH */
2915 #ifdef CONFIG_SECURITY
2917 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
2918 void security_key_free(struct key *key);
2919 int security_key_permission(key_ref_t key_ref,
2920 const struct cred *cred, key_perm_t perm);
2921 int security_key_getsecurity(struct key *key, char **_buffer);
2925 static inline int security_key_alloc(struct key *key,
2926 const struct cred *cred,
2927 unsigned long flags)
2932 static inline void security_key_free(struct key *key)
2936 static inline int security_key_permission(key_ref_t key_ref,
2937 const struct cred *cred,
2943 static inline int security_key_getsecurity(struct key *key, char **_buffer)
2950 #endif /* CONFIG_KEYS */
2953 #ifdef CONFIG_SECURITY
2954 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
2955 int security_audit_rule_known(struct audit_krule *krule);
2956 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
2957 struct audit_context *actx);
2958 void security_audit_rule_free(void *lsmrule);
2962 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
2968 static inline int security_audit_rule_known(struct audit_krule *krule)
2973 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
2974 void *lsmrule, struct audit_context *actx)
2979 static inline void security_audit_rule_free(void *lsmrule)
2982 #endif /* CONFIG_SECURITY */
2983 #endif /* CONFIG_AUDIT */
2985 #ifdef CONFIG_SECURITYFS
2987 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
2988 struct dentry *parent, void *data,
2989 const struct file_operations *fops);
2990 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
2991 extern void securityfs_remove(struct dentry *dentry);
2993 #else /* CONFIG_SECURITYFS */
2995 static inline struct dentry *securityfs_create_dir(const char *name,
2996 struct dentry *parent)
2998 return ERR_PTR(-ENODEV);
3001 static inline struct dentry *securityfs_create_file(const char *name,
3003 struct dentry *parent,
3005 const struct file_operations *fops)
3007 return ERR_PTR(-ENODEV);
3010 static inline void securityfs_remove(struct dentry *dentry)
3015 #ifdef CONFIG_SECURITY
3017 static inline char *alloc_secdata(void)
3019 return (char *)get_zeroed_page(GFP_KERNEL);
3022 static inline void free_secdata(void *secdata)
3024 free_page((unsigned long)secdata);
3029 static inline char *alloc_secdata(void)
3034 static inline void free_secdata(void *secdata)
3036 #endif /* CONFIG_SECURITY */
3038 #ifdef CONFIG_SECURITY_YAMA
3039 extern int yama_ptrace_access_check(struct task_struct *child,
3041 extern int yama_ptrace_traceme(struct task_struct *parent);
3042 extern void yama_task_free(struct task_struct *task);
3043 extern int yama_task_prctl(int option, unsigned long arg2, unsigned long arg3,
3044 unsigned long arg4, unsigned long arg5);
3046 static inline int yama_ptrace_access_check(struct task_struct *child,
3052 static inline int yama_ptrace_traceme(struct task_struct *parent)
3057 static inline void yama_task_free(struct task_struct *task)
3061 static inline int yama_task_prctl(int option, unsigned long arg2,
3062 unsigned long arg3, unsigned long arg4,
3067 #endif /* CONFIG_SECURITY_YAMA */
3069 #endif /* ! __LINUX_SECURITY_H */