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_file_mmap(struct file *file, unsigned long reqprot,
90 unsigned long prot, unsigned long flags,
91 unsigned long addr, unsigned long addr_only);
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 dac_mmap_min_addr 0UL
125 * Values used in the task_security_ops calls
127 /* setuid or setgid, id0 == uid or gid */
128 #define LSM_SETID_ID 1
130 /* setreuid or setregid, id0 == real, id1 == eff */
131 #define LSM_SETID_RE 2
133 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
134 #define LSM_SETID_RES 4
136 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
137 #define LSM_SETID_FS 8
139 /* forward declares to avoid warnings */
143 /* bprm->unsafe reasons */
144 #define LSM_UNSAFE_SHARE 1
145 #define LSM_UNSAFE_PTRACE 2
146 #define LSM_UNSAFE_PTRACE_CAP 4
149 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
150 void __user *buffer, size_t *lenp, loff_t *ppos);
153 /* security_inode_init_security callback function to write xattrs */
154 typedef int (*initxattrs) (struct inode *inode,
155 const struct xattr *xattr_array, void *fs_data);
157 #ifdef CONFIG_SECURITY
159 struct security_mnt_opts {
165 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
167 opts->mnt_opts = NULL;
168 opts->mnt_opts_flags = NULL;
169 opts->num_mnt_opts = 0;
172 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
176 for (i = 0; i < opts->num_mnt_opts; i++)
177 kfree(opts->mnt_opts[i]);
178 kfree(opts->mnt_opts);
179 opts->mnt_opts = NULL;
180 kfree(opts->mnt_opts_flags);
181 opts->mnt_opts_flags = NULL;
182 opts->num_mnt_opts = 0;
186 * struct security_operations - main security structure
188 * Security module identifier.
191 * A string that acts as a unique identifier for the LSM with max number
192 * of characters = SECURITY_NAME_MAX.
194 * Security hooks for program execution operations.
197 * Save security information in the bprm->security field, typically based
198 * on information about the bprm->file, for later use by the apply_creds
199 * hook. This hook may also optionally check permissions (e.g. for
200 * transitions between security domains).
201 * This hook may be called multiple times during a single execve, e.g. for
202 * interpreters. The hook can tell whether it has already been called by
203 * checking to see if @bprm->security is non-NULL. If so, then the hook
204 * may decide either to retain the security information saved earlier or
206 * @bprm contains the linux_binprm structure.
207 * Return 0 if the hook is successful and permission is granted.
208 * @bprm_check_security:
209 * This hook mediates the point when a search for a binary handler will
210 * begin. It allows a check the @bprm->security value which is set in the
211 * preceding set_creds call. The primary difference from set_creds is
212 * that the argv list and envp list are reliably available in @bprm. This
213 * hook may be called multiple times during a single execve; and in each
214 * pass set_creds is called first.
215 * @bprm contains the linux_binprm structure.
216 * Return 0 if the hook is successful and permission is granted.
217 * @bprm_committing_creds:
218 * Prepare to install the new security attributes of a process being
219 * transformed by an execve operation, based on the old credentials
220 * pointed to by @current->cred and the information set in @bprm->cred by
221 * the bprm_set_creds hook. @bprm points to the linux_binprm structure.
222 * This hook is a good place to perform state changes on the process such
223 * as closing open file descriptors to which access will no longer be
224 * granted when the attributes are changed. This is called immediately
225 * before commit_creds().
226 * @bprm_committed_creds:
227 * Tidy up after the installation of the new security attributes of a
228 * process being transformed by an execve operation. The new credentials
229 * have, by this point, been set to @current->cred. @bprm points to the
230 * linux_binprm structure. This hook is a good place to perform state
231 * changes on the process such as clearing out non-inheritable signal
232 * state. This is called immediately after commit_creds().
234 * Return a boolean value (0 or 1) indicating whether a "secure exec"
235 * is required. The flag is passed in the auxiliary table
236 * on the initial stack to the ELF interpreter to indicate whether libc
237 * should enable secure mode.
238 * @bprm contains the linux_binprm structure.
240 * Security hooks for filesystem operations.
242 * @sb_alloc_security:
243 * Allocate and attach a security structure to the sb->s_security field.
244 * The s_security field is initialized to NULL when the structure is
246 * @sb contains the super_block structure to be modified.
247 * Return 0 if operation was successful.
249 * Deallocate and clear the sb->s_security field.
250 * @sb contains the super_block structure to be modified.
252 * Check permission before obtaining filesystem statistics for the @mnt
254 * @dentry is a handle on the superblock for the filesystem.
255 * Return 0 if permission is granted.
257 * Check permission before an object specified by @dev_name is mounted on
258 * the mount point named by @nd. For an ordinary mount, @dev_name
259 * identifies a device if the file system type requires a device. For a
260 * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a
261 * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
262 * pathname of the object being mounted.
263 * @dev_name contains the name for object being mounted.
264 * @path contains the path for mount point object.
265 * @type contains the filesystem type.
266 * @flags contains the mount flags.
267 * @data contains the filesystem-specific data.
268 * Return 0 if permission is granted.
270 * Allow mount option data to be copied prior to parsing by the filesystem,
271 * so that the security module can extract security-specific mount
272 * options cleanly (a filesystem may modify the data e.g. with strsep()).
273 * This also allows the original mount data to be stripped of security-
274 * specific options to avoid having to make filesystems aware of them.
275 * @type the type of filesystem being mounted.
276 * @orig the original mount data copied from userspace.
277 * @copy copied data which will be passed to the security module.
278 * Returns 0 if the copy was successful.
280 * Extracts security system specific mount options and verifies no changes
281 * are being made to those options.
282 * @sb superblock being remounted
283 * @data contains the filesystem-specific data.
284 * Return 0 if permission is granted.
286 * Check permission before the @mnt file system is unmounted.
287 * @mnt contains the mounted file system.
288 * @flags contains the unmount flags, e.g. MNT_FORCE.
289 * Return 0 if permission is granted.
291 * Check permission before pivoting the root filesystem.
292 * @old_path contains the path for the new location of the current root (put_old).
293 * @new_path contains the path for the new root (new_root).
294 * Return 0 if permission is granted.
296 * Set the security relevant mount options used for a superblock
297 * @sb the superblock to set security mount options for
298 * @opts binary data structure containing all lsm mount data
299 * @sb_clone_mnt_opts:
300 * Copy all security options from a given superblock to another
301 * @oldsb old superblock which contain information to clone
302 * @newsb new superblock which needs filled in
303 * @sb_parse_opts_str:
304 * Parse a string of security data filling in the opts structure
305 * @options string containing all mount options known by the LSM
306 * @opts binary data structure usable by the LSM
308 * Security hooks for inode operations.
310 * @inode_alloc_security:
311 * Allocate and attach a security structure to @inode->i_security. The
312 * i_security field is initialized to NULL when the inode structure is
314 * @inode contains the inode structure.
315 * Return 0 if operation was successful.
316 * @inode_free_security:
317 * @inode contains the inode structure.
318 * Deallocate the inode security structure and set @inode->i_security to
320 * @inode_init_security:
321 * Obtain the security attribute name suffix and value to set on a newly
322 * created inode and set up the incore security field for the new inode.
323 * This hook is called by the fs code as part of the inode creation
324 * transaction and provides for atomic labeling of the inode, unlike
325 * the post_create/mkdir/... hooks called by the VFS. The hook function
326 * is expected to allocate the name and value via kmalloc, with the caller
327 * being responsible for calling kfree after using them.
328 * If the security module does not use security attributes or does
329 * not wish to put a security attribute on this particular inode,
330 * then it should return -EOPNOTSUPP to skip this processing.
331 * @inode contains the inode structure of the newly created inode.
332 * @dir contains the inode structure of the parent directory.
333 * @qstr contains the last path component of the new object
334 * @name will be set to the allocated name suffix (e.g. selinux).
335 * @value will be set to the allocated attribute value.
336 * @len will be set to the length of the value.
337 * Returns 0 if @name and @value have been successfully set,
338 * -EOPNOTSUPP if no security attribute is needed, or
339 * -ENOMEM on memory allocation failure.
341 * Check permission to create a regular file.
342 * @dir contains inode structure of the parent of the new file.
343 * @dentry contains the dentry structure for the file to be created.
344 * @mode contains the file mode of the file to be created.
345 * Return 0 if permission is granted.
347 * Check permission before creating a new hard link to a file.
348 * @old_dentry contains the dentry structure for an existing link to the file.
349 * @dir contains the inode structure of the parent directory of the new link.
350 * @new_dentry contains the dentry structure for the new link.
351 * Return 0 if permission is granted.
353 * Check permission before creating a new hard link to a file.
354 * @old_dentry contains the dentry structure for an existing link
356 * @new_dir contains the path structure of the parent directory of
358 * @new_dentry contains the dentry structure for the new link.
359 * Return 0 if permission is granted.
361 * Check the permission to remove a hard link to a file.
362 * @dir contains the inode structure of parent directory of the file.
363 * @dentry contains the dentry structure for file to be unlinked.
364 * Return 0 if permission is granted.
366 * Check the permission to remove a hard link to a file.
367 * @dir contains the path structure of parent directory of the file.
368 * @dentry contains the dentry structure for file to be unlinked.
369 * Return 0 if permission is granted.
371 * Check the permission to create a symbolic link to a file.
372 * @dir contains the inode structure of parent directory of the symbolic link.
373 * @dentry contains the dentry structure of the symbolic link.
374 * @old_name contains the pathname of file.
375 * Return 0 if permission is granted.
377 * Check the permission to create a symbolic link to a file.
378 * @dir contains the path structure of parent directory of
380 * @dentry contains the dentry structure of the symbolic link.
381 * @old_name contains the pathname of file.
382 * Return 0 if permission is granted.
384 * Check permissions to create a new directory in the existing directory
385 * associated with inode structure @dir.
386 * @dir contains the inode structure of parent of the directory to be created.
387 * @dentry contains the dentry structure of new directory.
388 * @mode contains the mode of new directory.
389 * Return 0 if permission is granted.
391 * Check permissions to create a new directory in the existing directory
392 * associated with path structure @path.
393 * @dir contains the path structure of parent of the directory
395 * @dentry contains the dentry structure of new directory.
396 * @mode contains the mode of new directory.
397 * Return 0 if permission is granted.
399 * Check the permission to remove a directory.
400 * @dir contains the inode structure of parent of the directory to be removed.
401 * @dentry contains the dentry structure of directory to be removed.
402 * Return 0 if permission is granted.
404 * Check the permission to remove a directory.
405 * @dir contains the path structure of parent of the directory to be
407 * @dentry contains the dentry structure of directory to be removed.
408 * Return 0 if permission is granted.
410 * Check permissions when creating a special file (or a socket or a fifo
411 * file created via the mknod system call). Note that if mknod operation
412 * is being done for a regular file, then the create hook will be called
414 * @dir contains the inode structure of parent of the new file.
415 * @dentry contains the dentry structure of the new file.
416 * @mode contains the mode of the new file.
417 * @dev contains the device number.
418 * Return 0 if permission is granted.
420 * Check permissions when creating a file. Note that this hook is called
421 * even if mknod operation is being done for a regular file.
422 * @dir contains the path structure of parent of the new file.
423 * @dentry contains the dentry structure of the new file.
424 * @mode contains the mode of the new file.
425 * @dev contains the undecoded device number. Use new_decode_dev() to get
426 * the decoded device number.
427 * Return 0 if permission is granted.
429 * Check for permission to rename a file or directory.
430 * @old_dir contains the inode structure for parent of the old link.
431 * @old_dentry contains the dentry structure of the old link.
432 * @new_dir contains the inode structure for parent of the new link.
433 * @new_dentry contains the dentry structure of the new link.
434 * Return 0 if permission is granted.
436 * Check for permission to rename a file or directory.
437 * @old_dir contains the path structure for parent of the old link.
438 * @old_dentry contains the dentry structure of the old link.
439 * @new_dir contains the path structure for parent of the new link.
440 * @new_dentry contains the dentry structure of the new link.
441 * Return 0 if permission is granted.
443 * Check for permission to change DAC's permission of a file or directory.
444 * @dentry contains the dentry structure.
445 * @mnt contains the vfsmnt structure.
446 * @mode contains DAC's mode.
447 * Return 0 if permission is granted.
449 * Check for permission to change owner/group of a file or directory.
450 * @path contains the path structure.
451 * @uid contains new owner's ID.
452 * @gid contains new group's ID.
453 * Return 0 if permission is granted.
455 * Check for permission to change root directory.
456 * @path contains the path structure.
457 * Return 0 if permission is granted.
459 * Check the permission to read the symbolic link.
460 * @dentry contains the dentry structure for the file link.
461 * Return 0 if permission is granted.
462 * @inode_follow_link:
463 * Check permission to follow a symbolic link when looking up a pathname.
464 * @dentry contains the dentry structure for the link.
465 * @nd contains the nameidata structure for the parent directory.
466 * Return 0 if permission is granted.
468 * Check permission before accessing an inode. This hook is called by the
469 * existing Linux permission function, so a security module can use it to
470 * provide additional checking for existing Linux permission checks.
471 * Notice that this hook is called when a file is opened (as well as many
472 * other operations), whereas the file_security_ops permission hook is
473 * called when the actual read/write operations are performed.
474 * @inode contains the inode structure to check.
475 * @mask contains the permission mask.
476 * Return 0 if permission is granted.
478 * Check permission before setting file attributes. Note that the kernel
479 * call to notify_change is performed from several locations, whenever
480 * file attributes change (such as when a file is truncated, chown/chmod
481 * operations, transferring disk quotas, etc).
482 * @dentry contains the dentry structure for the file.
483 * @attr is the iattr structure containing the new file attributes.
484 * Return 0 if permission is granted.
486 * Check permission before truncating a file.
487 * @path contains the path structure for the file.
488 * Return 0 if permission is granted.
490 * Check permission before obtaining file attributes.
491 * @mnt is the vfsmount where the dentry was looked up
492 * @dentry contains the dentry structure for the file.
493 * Return 0 if permission is granted.
495 * Check permission before setting the extended attributes
496 * @value identified by @name for @dentry.
497 * Return 0 if permission is granted.
498 * @inode_post_setxattr:
499 * Update inode security field after successful setxattr operation.
500 * @value identified by @name for @dentry.
502 * Check permission before obtaining the extended attributes
503 * identified by @name for @dentry.
504 * Return 0 if permission is granted.
506 * Check permission before obtaining the list of extended attribute
508 * Return 0 if permission is granted.
509 * @inode_removexattr:
510 * Check permission before removing the extended attribute
511 * identified by @name for @dentry.
512 * Return 0 if permission is granted.
513 * @inode_getsecurity:
514 * Retrieve a copy of the extended attribute representation of the
515 * security label associated with @name for @inode via @buffer. Note that
516 * @name is the remainder of the attribute name after the security prefix
517 * has been removed. @alloc is used to specify of the call should return a
518 * value via the buffer or just the value length Return size of buffer on
520 * @inode_setsecurity:
521 * Set the security label associated with @name for @inode from the
522 * extended attribute value @value. @size indicates the size of the
523 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
524 * Note that @name is the remainder of the attribute name after the
525 * security. prefix has been removed.
526 * Return 0 on success.
527 * @inode_listsecurity:
528 * Copy the extended attribute names for the security labels
529 * associated with @inode into @buffer. The maximum size of @buffer
530 * is specified by @buffer_size. @buffer may be NULL to request
531 * the size of the buffer required.
532 * Returns number of bytes used/required on success.
533 * @inode_need_killpriv:
534 * Called when an inode has been changed.
535 * @dentry is the dentry being changed.
536 * Return <0 on error to abort the inode change operation.
537 * Return 0 if inode_killpriv does not need to be called.
538 * Return >0 if inode_killpriv does need to be called.
540 * The setuid bit is being removed. Remove similar security labels.
541 * Called with the dentry->d_inode->i_mutex held.
542 * @dentry is the dentry being changed.
543 * Return 0 on success. If error is returned, then the operation
544 * causing setuid bit removal is failed.
546 * Get the secid associated with the node.
547 * @inode contains a pointer to the inode.
548 * @secid contains a pointer to the location where result will be saved.
549 * In case of failure, @secid will be set to zero.
551 * Security hooks for file operations
554 * Check file permissions before accessing an open file. This hook is
555 * called by various operations that read or write files. A security
556 * module can use this hook to perform additional checking on these
557 * operations, e.g. to revalidate permissions on use to support privilege
558 * bracketing or policy changes. Notice that this hook is used when the
559 * actual read/write operations are performed, whereas the
560 * inode_security_ops hook is called when a file is opened (as well as
561 * many other operations).
562 * Caveat: Although this hook can be used to revalidate permissions for
563 * various system call operations that read or write files, it does not
564 * address the revalidation of permissions for memory-mapped files.
565 * Security modules must handle this separately if they need such
567 * @file contains the file structure being accessed.
568 * @mask contains the requested permissions.
569 * Return 0 if permission is granted.
570 * @file_alloc_security:
571 * Allocate and attach a security structure to the file->f_security field.
572 * The security field is initialized to NULL when the structure is first
574 * @file contains the file structure to secure.
575 * Return 0 if the hook is successful and permission is granted.
576 * @file_free_security:
577 * Deallocate and free any security structures stored in file->f_security.
578 * @file contains the file structure being modified.
580 * @file contains the file structure.
581 * @cmd contains the operation to perform.
582 * @arg contains the operational arguments.
583 * Check permission for an ioctl operation on @file. Note that @arg
584 * sometimes represents a user space pointer; in other cases, it may be a
585 * simple integer value. When @arg represents a user space pointer, it
586 * should never be used by the security module.
587 * Return 0 if permission is granted.
589 * Check permissions for a mmap operation. The @file may be NULL, e.g.
590 * if mapping anonymous memory.
591 * @file contains the file structure for file to map (may be NULL).
592 * @reqprot contains the protection requested by the application.
593 * @prot contains the protection that will be applied by the kernel.
594 * @flags contains the operational flags.
595 * @addr contains virtual address that will be used for the operation.
596 * @addr_only contains a boolean: 0 if file-backed VMA, otherwise 1.
597 * Return 0 if permission is granted.
599 * Check permissions before changing memory access permissions.
600 * @vma contains the memory region to modify.
601 * @reqprot contains the protection requested by the application.
602 * @prot contains the protection that will be applied by the kernel.
603 * Return 0 if permission is granted.
605 * Check permission before performing file locking operations.
606 * Note: this hook mediates both flock and fcntl style locks.
607 * @file contains the file structure.
608 * @cmd contains the posix-translated lock operation to perform
609 * (e.g. F_RDLCK, F_WRLCK).
610 * Return 0 if permission is granted.
612 * Check permission before allowing the file operation specified by @cmd
613 * from being performed on the file @file. Note that @arg sometimes
614 * represents a user space pointer; in other cases, it may be a simple
615 * integer value. When @arg represents a user space pointer, it should
616 * never be used by the security module.
617 * @file contains the file structure.
618 * @cmd contains the operation to be performed.
619 * @arg contains the operational arguments.
620 * Return 0 if permission is granted.
622 * Save owner security information (typically from current->security) in
623 * file->f_security for later use by the send_sigiotask hook.
624 * @file contains the file structure to update.
625 * Return 0 on success.
626 * @file_send_sigiotask:
627 * Check permission for the file owner @fown to send SIGIO or SIGURG to the
628 * process @tsk. Note that this hook is sometimes called from interrupt.
629 * Note that the fown_struct, @fown, is never outside the context of a
630 * struct file, so the file structure (and associated security information)
631 * can always be obtained:
632 * container_of(fown, struct file, f_owner)
633 * @tsk contains the structure of task receiving signal.
634 * @fown contains the file owner information.
635 * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
636 * Return 0 if permission is granted.
638 * This hook allows security modules to control the ability of a process
639 * to receive an open file descriptor via socket IPC.
640 * @file contains the file structure being received.
641 * Return 0 if permission is granted.
643 * Save open-time permission checking state for later use upon
644 * file_permission, and recheck access if anything has changed
645 * since inode_permission.
647 * Security hooks for task operations.
650 * Check permission before creating a child process. See the clone(2)
651 * manual page for definitions of the @clone_flags.
652 * @clone_flags contains the flags indicating what should be shared.
653 * Return 0 if permission is granted.
655 * @task task being freed
656 * Handle release of task-related resources. (Note that this can be called
657 * from interrupt context.)
659 * @cred points to the credentials.
660 * @gfp indicates the atomicity of any memory allocations.
661 * Only allocate sufficient memory and attach to @cred such that
662 * cred_transfer() will not get ENOMEM.
664 * @cred points to the credentials.
665 * Deallocate and clear the cred->security field in a set of credentials.
667 * @new points to the new credentials.
668 * @old points to the original credentials.
669 * @gfp indicates the atomicity of any memory allocations.
670 * Prepare a new set of credentials by copying the data from the old set.
672 * @new points to the new credentials.
673 * @old points to the original credentials.
674 * Transfer data from original creds to new creds
676 * Set the credentials for a kernel service to act as (subjective context).
677 * @new points to the credentials to be modified.
678 * @secid specifies the security ID to be set
679 * The current task must be the one that nominated @secid.
680 * Return 0 if successful.
681 * @kernel_create_files_as:
682 * Set the file creation context in a set of credentials to be the same as
683 * the objective context of the specified inode.
684 * @new points to the credentials to be modified.
685 * @inode points to the inode to use as a reference.
686 * The current task must be the one that nominated @inode.
687 * Return 0 if successful.
688 * @kernel_module_request:
689 * Ability to trigger the kernel to automatically upcall to userspace for
690 * userspace to load a kernel module with the given name.
691 * @kmod_name name of the module requested by the kernel
692 * Return 0 if successful.
694 * Update the module's state after setting one or more of the user
695 * identity attributes of the current process. The @flags parameter
696 * indicates which of the set*uid system calls invoked this hook. If
697 * @new is the set of credentials that will be installed. Modifications
698 * should be made to this rather than to @current->cred.
699 * @old is the set of credentials that are being replaces
700 * @flags contains one of the LSM_SETID_* values.
701 * Return 0 on success.
703 * Check permission before setting the process group identifier of the
704 * process @p to @pgid.
705 * @p contains the task_struct for process being modified.
706 * @pgid contains the new pgid.
707 * Return 0 if permission is granted.
709 * Check permission before getting the process group identifier of the
711 * @p contains the task_struct for the process.
712 * Return 0 if permission is granted.
714 * Check permission before getting the session identifier of the process
716 * @p contains the task_struct for the process.
717 * Return 0 if permission is granted.
719 * Retrieve the security identifier of the process @p.
720 * @p contains the task_struct for the process and place is into @secid.
721 * In case of failure, @secid will be set to zero.
724 * Check permission before setting the nice value of @p to @nice.
725 * @p contains the task_struct of process.
726 * @nice contains the new nice value.
727 * Return 0 if permission is granted.
729 * Check permission before setting the ioprio value of @p to @ioprio.
730 * @p contains the task_struct of process.
731 * @ioprio contains the new ioprio value
732 * Return 0 if permission is granted.
734 * Check permission before getting the ioprio value of @p.
735 * @p contains the task_struct of process.
736 * Return 0 if permission is granted.
738 * Check permission before setting the resource limits of the current
739 * process for @resource to @new_rlim. The old resource limit values can
740 * be examined by dereferencing (current->signal->rlim + resource).
741 * @resource contains the resource whose limit is being set.
742 * @new_rlim contains the new limits for @resource.
743 * Return 0 if permission is granted.
744 * @task_setscheduler:
745 * Check permission before setting scheduling policy and/or parameters of
746 * process @p based on @policy and @lp.
747 * @p contains the task_struct for process.
748 * @policy contains the scheduling policy.
749 * @lp contains the scheduling parameters.
750 * Return 0 if permission is granted.
751 * @task_getscheduler:
752 * Check permission before obtaining scheduling information for process
754 * @p contains the task_struct for process.
755 * Return 0 if permission is granted.
757 * Check permission before moving memory owned by process @p.
758 * @p contains the task_struct for process.
759 * Return 0 if permission is granted.
761 * Check permission before sending signal @sig to @p. @info can be NULL,
762 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
763 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
764 * from the kernel and should typically be permitted.
765 * SIGIO signals are handled separately by the send_sigiotask hook in
767 * @p contains the task_struct for process.
768 * @info contains the signal information.
769 * @sig contains the signal value.
770 * @secid contains the sid of the process where the signal originated
771 * Return 0 if permission is granted.
773 * Check permission before allowing a process to reap a child process @p
774 * and collect its status information.
775 * @p contains the task_struct for process.
776 * Return 0 if permission is granted.
778 * Check permission before performing a process control operation on the
780 * @option contains the operation.
781 * @arg2 contains a argument.
782 * @arg3 contains a argument.
783 * @arg4 contains a argument.
784 * @arg5 contains a argument.
785 * Return -ENOSYS if no-one wanted to handle this op, any other value to
786 * cause prctl() to return immediately with that value.
788 * Set the security attributes for an inode based on an associated task's
789 * security attributes, e.g. for /proc/pid inodes.
790 * @p contains the task_struct for the task.
791 * @inode contains the inode structure for the inode.
793 * Security hooks for Netlink messaging.
796 * Save security information for a netlink message so that permission
797 * checking can be performed when the message is processed. The security
798 * information can be saved using the eff_cap field of the
799 * netlink_skb_parms structure. Also may be used to provide fine
800 * grained control over message transmission.
801 * @sk associated sock of task sending the message.
802 * @skb contains the sk_buff structure for the netlink message.
803 * Return 0 if the information was successfully saved and message
804 * is allowed to be transmitted.
806 * Security hooks for Unix domain networking.
808 * @unix_stream_connect:
809 * Check permissions before establishing a Unix domain stream connection
810 * between @sock and @other.
811 * @sock contains the sock structure.
812 * @other contains the peer sock structure.
813 * @newsk contains the new sock structure.
814 * Return 0 if permission is granted.
816 * Check permissions before connecting or sending datagrams from @sock to
818 * @sock contains the socket structure.
819 * @other contains the peer socket structure.
820 * Return 0 if permission is granted.
822 * The @unix_stream_connect and @unix_may_send hooks were necessary because
823 * Linux provides an alternative to the conventional file name space for Unix
824 * domain sockets. Whereas binding and connecting to sockets in the file name
825 * space is mediated by the typical file permissions (and caught by the mknod
826 * and permission hooks in inode_security_ops), binding and connecting to
827 * sockets in the abstract name space is completely unmediated. Sufficient
828 * control of Unix domain sockets in the abstract name space isn't possible
829 * using only the socket layer hooks, since we need to know the actual target
830 * socket, which is not looked up until we are inside the af_unix code.
832 * Security hooks for socket operations.
835 * Check permissions prior to creating a new socket.
836 * @family contains the requested protocol family.
837 * @type contains the requested communications type.
838 * @protocol contains the requested protocol.
839 * @kern set to 1 if a kernel socket.
840 * Return 0 if permission is granted.
841 * @socket_post_create:
842 * This hook allows a module to update or allocate a per-socket security
843 * structure. Note that the security field was not added directly to the
844 * socket structure, but rather, the socket security information is stored
845 * in the associated inode. Typically, the inode alloc_security hook will
846 * allocate and and attach security information to
847 * sock->inode->i_security. This hook may be used to update the
848 * sock->inode->i_security field with additional information that wasn't
849 * available when the inode was allocated.
850 * @sock contains the newly created socket structure.
851 * @family contains the requested protocol family.
852 * @type contains the requested communications type.
853 * @protocol contains the requested protocol.
854 * @kern set to 1 if a kernel socket.
856 * Check permission before socket protocol layer bind operation is
857 * performed and the socket @sock is bound to the address specified in the
858 * @address parameter.
859 * @sock contains the socket structure.
860 * @address contains the address to bind to.
861 * @addrlen contains the length of address.
862 * Return 0 if permission is granted.
864 * Check permission before socket protocol layer connect operation
865 * attempts to connect socket @sock to a remote address, @address.
866 * @sock contains the socket structure.
867 * @address contains the address of remote endpoint.
868 * @addrlen contains the length of address.
869 * Return 0 if permission is granted.
871 * Check permission before socket protocol layer listen operation.
872 * @sock contains the socket structure.
873 * @backlog contains the maximum length for the pending connection queue.
874 * Return 0 if permission is granted.
876 * Check permission before accepting a new connection. Note that the new
877 * socket, @newsock, has been created and some information copied to it,
878 * but the accept operation has not actually been performed.
879 * @sock contains the listening socket structure.
880 * @newsock contains the newly created server socket for connection.
881 * Return 0 if permission is granted.
883 * Check permission before transmitting a message to another socket.
884 * @sock contains the socket structure.
885 * @msg contains the message to be transmitted.
886 * @size contains the size of message.
887 * Return 0 if permission is granted.
889 * Check permission before receiving a message from a socket.
890 * @sock contains the socket structure.
891 * @msg contains the message structure.
892 * @size contains the size of message structure.
893 * @flags contains the operational flags.
894 * Return 0 if permission is granted.
895 * @socket_getsockname:
896 * Check permission before the local address (name) of the socket object
897 * @sock is retrieved.
898 * @sock contains the socket structure.
899 * Return 0 if permission is granted.
900 * @socket_getpeername:
901 * Check permission before the remote address (name) of a socket object
902 * @sock is retrieved.
903 * @sock contains the socket structure.
904 * Return 0 if permission is granted.
905 * @socket_getsockopt:
906 * Check permissions before retrieving the options associated with socket
908 * @sock contains the socket structure.
909 * @level contains the protocol level to retrieve option from.
910 * @optname contains the name of option to retrieve.
911 * Return 0 if permission is granted.
912 * @socket_setsockopt:
913 * Check permissions before setting the options associated with socket
915 * @sock contains the socket structure.
916 * @level contains the protocol level to set options for.
917 * @optname contains the name of the option to set.
918 * Return 0 if permission is granted.
920 * Checks permission before all or part of a connection on the socket
921 * @sock is shut down.
922 * @sock contains the socket structure.
923 * @how contains the flag indicating how future sends and receives are handled.
924 * Return 0 if permission is granted.
925 * @socket_sock_rcv_skb:
926 * Check permissions on incoming network packets. This hook is distinct
927 * from Netfilter's IP input hooks since it is the first time that the
928 * incoming sk_buff @skb has been associated with a particular socket, @sk.
929 * Must not sleep inside this hook because some callers hold spinlocks.
930 * @sk contains the sock (not socket) associated with the incoming sk_buff.
931 * @skb contains the incoming network data.
932 * @socket_getpeersec_stream:
933 * This hook allows the security module to provide peer socket security
934 * state for unix or connected tcp sockets to userspace via getsockopt
935 * SO_GETPEERSEC. For tcp sockets this can be meaningful if the
936 * socket is associated with an ipsec SA.
937 * @sock is the local socket.
938 * @optval userspace memory where the security state is to be copied.
939 * @optlen userspace int where the module should copy the actual length
940 * of the security state.
941 * @len as input is the maximum length to copy to userspace provided
943 * Return 0 if all is well, otherwise, typical getsockopt return
945 * @socket_getpeersec_dgram:
946 * This hook allows the security module to provide peer socket security
947 * state for udp sockets on a per-packet basis to userspace via
948 * getsockopt SO_GETPEERSEC. The application must first have indicated
949 * the IP_PASSSEC option via getsockopt. It can then retrieve the
950 * security state returned by this hook for a packet via the SCM_SECURITY
951 * ancillary message type.
952 * @skb is the skbuff for the packet being queried
953 * @secdata is a pointer to a buffer in which to copy the security data
954 * @seclen is the maximum length for @secdata
955 * Return 0 on success, error on failure.
956 * @sk_alloc_security:
957 * Allocate and attach a security structure to the sk->sk_security field,
958 * which is used to copy security attributes between local stream sockets.
960 * Deallocate security structure.
961 * @sk_clone_security:
962 * Clone/copy security structure.
964 * Retrieve the LSM-specific secid for the sock to enable caching of network
967 * Sets the socket's isec sid to the sock's sid.
968 * @inet_conn_request:
969 * Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
971 * Sets the new child socket's sid to the openreq sid.
972 * @inet_conn_established:
973 * Sets the connection's peersid to the secmark on skb.
974 * @secmark_relabel_packet:
975 * check if the process should be allowed to relabel packets to the given secid
976 * @security_secmark_refcount_inc
977 * tells the LSM to increment the number of secmark labeling rules loaded
978 * @security_secmark_refcount_dec
979 * tells the LSM to decrement the number of secmark labeling rules loaded
980 * @req_classify_flow:
981 * Sets the flow's sid to the openreq sid.
983 * Check permissions prior to creating a new TUN device.
984 * @tun_dev_post_create:
985 * This hook allows a module to update or allocate a per-socket security
987 * @sk contains the newly created sock structure.
989 * Check permissions prior to attaching to a persistent TUN device. This
990 * hook can also be used by the module to update any security state
991 * associated with the TUN device's sock structure.
992 * @sk contains the existing sock structure.
994 * Security hooks for XFRM operations.
996 * @xfrm_policy_alloc_security:
997 * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
998 * Database used by the XFRM system.
999 * @sec_ctx contains the security context information being provided by
1000 * the user-level policy update program (e.g., setkey).
1001 * Allocate a security structure to the xp->security field; the security
1002 * field is initialized to NULL when the xfrm_policy is allocated.
1003 * Return 0 if operation was successful (memory to allocate, legal context)
1004 * @xfrm_policy_clone_security:
1005 * @old_ctx contains an existing xfrm_sec_ctx.
1006 * @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
1007 * Allocate a security structure in new_ctxp that contains the
1008 * information from the old_ctx structure.
1009 * Return 0 if operation was successful (memory to allocate).
1010 * @xfrm_policy_free_security:
1011 * @ctx contains the xfrm_sec_ctx
1012 * Deallocate xp->security.
1013 * @xfrm_policy_delete_security:
1014 * @ctx contains the xfrm_sec_ctx.
1015 * Authorize deletion of xp->security.
1016 * @xfrm_state_alloc_security:
1017 * @x contains the xfrm_state being added to the Security Association
1018 * Database by the XFRM system.
1019 * @sec_ctx contains the security context information being provided by
1020 * the user-level SA generation program (e.g., setkey or racoon).
1021 * @secid contains the secid from which to take the mls portion of the context.
1022 * Allocate a security structure to the x->security field; the security
1023 * field is initialized to NULL when the xfrm_state is allocated. Set the
1024 * context to correspond to either sec_ctx or polsec, with the mls portion
1025 * taken from secid in the latter case.
1026 * Return 0 if operation was successful (memory to allocate, legal context).
1027 * @xfrm_state_free_security:
1028 * @x contains the xfrm_state.
1029 * Deallocate x->security.
1030 * @xfrm_state_delete_security:
1031 * @x contains the xfrm_state.
1032 * Authorize deletion of x->security.
1033 * @xfrm_policy_lookup:
1034 * @ctx contains the xfrm_sec_ctx for which the access control is being
1036 * @fl_secid contains the flow security label that is used to authorize
1037 * access to the policy xp.
1038 * @dir contains the direction of the flow (input or output).
1039 * Check permission when a flow selects a xfrm_policy for processing
1040 * XFRMs on a packet. The hook is called when selecting either a
1041 * per-socket policy or a generic xfrm policy.
1042 * Return 0 if permission is granted, -ESRCH otherwise, or -errno
1044 * @xfrm_state_pol_flow_match:
1045 * @x contains the state to match.
1046 * @xp contains the policy to check for a match.
1047 * @fl contains the flow to check for a match.
1048 * Return 1 if there is a match.
1049 * @xfrm_decode_session:
1050 * @skb points to skb to decode.
1051 * @secid points to the flow key secid to set.
1052 * @ckall says if all xfrms used should be checked for same secid.
1053 * Return 0 if ckall is zero or all xfrms used have the same secid.
1055 * Security hooks affecting all Key Management operations
1058 * Permit allocation of a key and assign security data. Note that key does
1059 * not have a serial number assigned at this point.
1060 * @key points to the key.
1061 * @flags is the allocation flags
1062 * Return 0 if permission is granted, -ve error otherwise.
1064 * Notification of destruction; free security data.
1065 * @key points to the key.
1068 * See whether a specific operational right is granted to a process on a
1070 * @key_ref refers to the key (key pointer + possession attribute bit).
1071 * @cred points to the credentials to provide the context against which to
1072 * evaluate the security data on the key.
1073 * @perm describes the combination of permissions required of this key.
1074 * Return 0 if permission is granted, -ve error otherwise.
1076 * Get a textual representation of the security context attached to a key
1077 * for the purposes of honouring KEYCTL_GETSECURITY. This function
1078 * allocates the storage for the NUL-terminated string and the caller
1080 * @key points to the key to be queried.
1081 * @_buffer points to a pointer that should be set to point to the
1082 * resulting string (if no label or an error occurs).
1083 * Return the length of the string (including terminating NUL) or -ve if
1085 * May also return 0 (and a NULL buffer pointer) if there is no label.
1087 * Security hooks affecting all System V IPC operations.
1090 * Check permissions for access to IPC
1091 * @ipcp contains the kernel IPC permission structure
1092 * @flag contains the desired (requested) permission set
1093 * Return 0 if permission is granted.
1095 * Get the secid associated with the ipc object.
1096 * @ipcp contains the kernel IPC permission structure.
1097 * @secid contains a pointer to the location where result will be saved.
1098 * In case of failure, @secid will be set to zero.
1100 * Security hooks for individual messages held in System V IPC message queues
1101 * @msg_msg_alloc_security:
1102 * Allocate and attach a security structure to the msg->security field.
1103 * The security field is initialized to NULL when the structure is first
1105 * @msg contains the message structure to be modified.
1106 * Return 0 if operation was successful and permission is granted.
1107 * @msg_msg_free_security:
1108 * Deallocate the security structure for this message.
1109 * @msg contains the message structure to be modified.
1111 * Security hooks for System V IPC Message Queues
1113 * @msg_queue_alloc_security:
1114 * Allocate and attach a security structure to the
1115 * msq->q_perm.security field. The security field is initialized to
1116 * NULL when the structure is first created.
1117 * @msq contains the message queue structure to be modified.
1118 * Return 0 if operation was successful and permission is granted.
1119 * @msg_queue_free_security:
1120 * Deallocate security structure for this message queue.
1121 * @msq contains the message queue structure to be modified.
1122 * @msg_queue_associate:
1123 * Check permission when a message queue is requested through the
1124 * msgget system call. This hook is only called when returning the
1125 * message queue identifier for an existing message queue, not when a
1126 * new message queue is created.
1127 * @msq contains the message queue to act upon.
1128 * @msqflg contains the operation control flags.
1129 * Return 0 if permission is granted.
1130 * @msg_queue_msgctl:
1131 * Check permission when a message control operation specified by @cmd
1132 * is to be performed on the message queue @msq.
1133 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
1134 * @msq contains the message queue to act upon. May be NULL.
1135 * @cmd contains the operation to be performed.
1136 * Return 0 if permission is granted.
1137 * @msg_queue_msgsnd:
1138 * Check permission before a message, @msg, is enqueued on the message
1140 * @msq contains the message queue to send message to.
1141 * @msg contains the message to be enqueued.
1142 * @msqflg contains operational flags.
1143 * Return 0 if permission is granted.
1144 * @msg_queue_msgrcv:
1145 * Check permission before a message, @msg, is removed from the message
1146 * queue, @msq. The @target task structure contains a pointer to the
1147 * process that will be receiving the message (not equal to the current
1148 * process when inline receives are being performed).
1149 * @msq contains the message queue to retrieve message from.
1150 * @msg contains the message destination.
1151 * @target contains the task structure for recipient process.
1152 * @type contains the type of message requested.
1153 * @mode contains the operational flags.
1154 * Return 0 if permission is granted.
1156 * Security hooks for System V Shared Memory Segments
1158 * @shm_alloc_security:
1159 * Allocate and attach a security structure to the shp->shm_perm.security
1160 * field. The security field is initialized to NULL when the structure is
1162 * @shp contains the shared memory structure to be modified.
1163 * Return 0 if operation was successful and permission is granted.
1164 * @shm_free_security:
1165 * Deallocate the security struct for this memory segment.
1166 * @shp contains the shared memory structure to be modified.
1168 * Check permission when a shared memory region is requested through the
1169 * shmget system call. This hook is only called when returning the shared
1170 * memory region identifier for an existing region, not when a new shared
1171 * memory region is created.
1172 * @shp contains the shared memory structure to be modified.
1173 * @shmflg contains the operation control flags.
1174 * Return 0 if permission is granted.
1176 * Check permission when a shared memory control operation specified by
1177 * @cmd is to be performed on the shared memory region @shp.
1178 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1179 * @shp contains shared memory structure to be modified.
1180 * @cmd contains the operation to be performed.
1181 * Return 0 if permission is granted.
1183 * Check permissions prior to allowing the shmat system call to attach the
1184 * shared memory segment @shp to the data segment of the calling process.
1185 * The attaching address is specified by @shmaddr.
1186 * @shp contains the shared memory structure to be modified.
1187 * @shmaddr contains the address to attach memory region to.
1188 * @shmflg contains the operational flags.
1189 * Return 0 if permission is granted.
1191 * Security hooks for System V Semaphores
1193 * @sem_alloc_security:
1194 * Allocate and attach a security structure to the sma->sem_perm.security
1195 * field. The security field is initialized to NULL when the structure is
1197 * @sma contains the semaphore structure
1198 * Return 0 if operation was successful and permission is granted.
1199 * @sem_free_security:
1200 * deallocate security struct for this semaphore
1201 * @sma contains the semaphore structure.
1203 * Check permission when a semaphore is requested through the semget
1204 * system call. This hook is only called when returning the semaphore
1205 * identifier for an existing semaphore, not when a new one must be
1207 * @sma contains the semaphore structure.
1208 * @semflg contains the operation control flags.
1209 * Return 0 if permission is granted.
1211 * Check permission when a semaphore operation specified by @cmd is to be
1212 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
1213 * IPC_INFO or SEM_INFO.
1214 * @sma contains the semaphore structure. May be NULL.
1215 * @cmd contains the operation to be performed.
1216 * Return 0 if permission is granted.
1218 * Check permissions before performing operations on members of the
1219 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1221 * @sma contains the semaphore structure.
1222 * @sops contains the operations to perform.
1223 * @nsops contains the number of operations to perform.
1224 * @alter contains the flag indicating whether changes are to be made.
1225 * Return 0 if permission is granted.
1227 * @ptrace_access_check:
1228 * Check permission before allowing the current process to trace the
1230 * Security modules may also want to perform a process tracing check
1231 * during an execve in the set_security or apply_creds hooks of
1232 * tracing check during an execve in the bprm_set_creds hook of
1233 * binprm_security_ops if the process is being traced and its security
1234 * attributes would be changed by the execve.
1235 * @child contains the task_struct structure for the target process.
1236 * @mode contains the PTRACE_MODE flags indicating the form of access.
1237 * Return 0 if permission is granted.
1239 * Check that the @parent process has sufficient permission to trace the
1240 * current process before allowing the current process to present itself
1241 * to the @parent process for tracing.
1242 * The parent process will still have to undergo the ptrace_access_check
1243 * checks before it is allowed to trace this one.
1244 * @parent contains the task_struct structure for debugger process.
1245 * Return 0 if permission is granted.
1247 * Get the @effective, @inheritable, and @permitted capability sets for
1248 * the @target process. The hook may also perform permission checking to
1249 * determine if the current process is allowed to see the capability sets
1250 * of the @target process.
1251 * @target contains the task_struct structure for target process.
1252 * @effective contains the effective capability set.
1253 * @inheritable contains the inheritable capability set.
1254 * @permitted contains the permitted capability set.
1255 * Return 0 if the capability sets were successfully obtained.
1257 * Set the @effective, @inheritable, and @permitted capability sets for
1258 * the current process.
1259 * @new contains the new credentials structure for target process.
1260 * @old contains the current credentials structure for target process.
1261 * @effective contains the effective capability set.
1262 * @inheritable contains the inheritable capability set.
1263 * @permitted contains the permitted capability set.
1264 * Return 0 and update @new if permission is granted.
1266 * Check whether the @tsk process has the @cap capability in the indicated
1268 * @cred contains the credentials to use.
1269 * @ns contains the user namespace we want the capability in
1270 * @cap contains the capability <include/linux/capability.h>.
1271 * @audit: Whether to write an audit message or not
1272 * Return 0 if the capability is granted for @tsk.
1274 * Check permission before accessing the kernel message ring or changing
1275 * logging to the console.
1276 * See the syslog(2) manual page for an explanation of the @type values.
1277 * @type contains the type of action.
1278 * @from_file indicates the context of action (if it came from /proc).
1279 * Return 0 if permission is granted.
1281 * Check permission to change the system time.
1282 * struct timespec and timezone are defined in include/linux/time.h
1283 * @ts contains new time
1284 * @tz contains new timezone
1285 * Return 0 if permission is granted.
1286 * @vm_enough_memory:
1287 * Check permissions for allocating a new virtual mapping.
1288 * @mm contains the mm struct it is being added to.
1289 * @pages contains the number of pages.
1290 * Return 0 if permission is granted.
1293 * Convert secid to security context. If secdata is NULL the length of
1294 * the result will be returned in seclen, but no secdata will be returned.
1295 * This does mean that the length could change between calls to check the
1296 * length and the next call which actually allocates and returns the secdata.
1297 * @secid contains the security ID.
1298 * @secdata contains the pointer that stores the converted security context.
1299 * @seclen pointer which contains the length of the data
1301 * Convert security context to secid.
1302 * @secid contains the pointer to the generated security ID.
1303 * @secdata contains the security context.
1306 * Release the security context.
1307 * @secdata contains the security context.
1308 * @seclen contains the length of the security context.
1310 * Security hooks for Audit
1313 * Allocate and initialize an LSM audit rule structure.
1314 * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
1315 * @op contains the operator the rule uses.
1316 * @rulestr contains the context where the rule will be applied to.
1317 * @lsmrule contains a pointer to receive the result.
1318 * Return 0 if @lsmrule has been successfully set,
1319 * -EINVAL in case of an invalid rule.
1321 * @audit_rule_known:
1322 * Specifies whether given @rule contains any fields related to current LSM.
1323 * @rule contains the audit rule of interest.
1324 * Return 1 in case of relation found, 0 otherwise.
1326 * @audit_rule_match:
1327 * Determine if given @secid matches a rule previously approved
1328 * by @audit_rule_known.
1329 * @secid contains the security id in question.
1330 * @field contains the field which relates to current LSM.
1331 * @op contains the operator that will be used for matching.
1332 * @rule points to the audit rule that will be checked against.
1333 * @actx points to the audit context associated with the check.
1334 * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
1337 * Deallocate the LSM audit rule structure previously allocated by
1339 * @rule contains the allocated rule
1341 * @inode_notifysecctx:
1342 * Notify the security module of what the security context of an inode
1343 * should be. Initializes the incore security context managed by the
1344 * security module for this inode. Example usage: NFS client invokes
1345 * this hook to initialize the security context in its incore inode to the
1346 * value provided by the server for the file when the server returned the
1347 * file's attributes to the client.
1349 * Must be called with inode->i_mutex locked.
1351 * @inode we wish to set the security context of.
1352 * @ctx contains the string which we wish to set in the inode.
1353 * @ctxlen contains the length of @ctx.
1356 * Change the security context of an inode. Updates the
1357 * incore security context managed by the security module and invokes the
1358 * fs code as needed (via __vfs_setxattr_noperm) to update any backing
1359 * xattrs that represent the context. Example usage: NFS server invokes
1360 * this hook to change the security context in its incore inode and on the
1361 * backing filesystem to a value provided by the client on a SETATTR
1364 * Must be called with inode->i_mutex locked.
1366 * @dentry contains the inode we wish to set the security context of.
1367 * @ctx contains the string which we wish to set in the inode.
1368 * @ctxlen contains the length of @ctx.
1371 * Returns a string containing all relevant security context information
1373 * @inode we wish to get the security context of.
1374 * @ctx is a pointer in which to place the allocated security context.
1375 * @ctxlen points to the place to put the length of @ctx.
1376 * This is the main security structure.
1378 struct security_operations {
1379 char name[SECURITY_NAME_MAX + 1];
1381 int (*ptrace_access_check) (struct task_struct *child, unsigned int mode);
1382 int (*ptrace_traceme) (struct task_struct *parent);
1383 int (*capget) (struct task_struct *target,
1384 kernel_cap_t *effective,
1385 kernel_cap_t *inheritable, kernel_cap_t *permitted);
1386 int (*capset) (struct cred *new,
1387 const struct cred *old,
1388 const kernel_cap_t *effective,
1389 const kernel_cap_t *inheritable,
1390 const kernel_cap_t *permitted);
1391 int (*capable) (const struct cred *cred, struct user_namespace *ns,
1392 int cap, int audit);
1393 int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
1394 int (*quota_on) (struct dentry *dentry);
1395 int (*syslog) (int type);
1396 int (*settime) (const struct timespec *ts, const struct timezone *tz);
1397 int (*vm_enough_memory) (struct mm_struct *mm, long pages);
1399 int (*bprm_set_creds) (struct linux_binprm *bprm);
1400 int (*bprm_check_security) (struct linux_binprm *bprm);
1401 int (*bprm_secureexec) (struct linux_binprm *bprm);
1402 void (*bprm_committing_creds) (struct linux_binprm *bprm);
1403 void (*bprm_committed_creds) (struct linux_binprm *bprm);
1405 int (*sb_alloc_security) (struct super_block *sb);
1406 void (*sb_free_security) (struct super_block *sb);
1407 int (*sb_copy_data) (char *orig, char *copy);
1408 int (*sb_remount) (struct super_block *sb, void *data);
1409 int (*sb_kern_mount) (struct super_block *sb, int flags, void *data);
1410 int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
1411 int (*sb_statfs) (struct dentry *dentry);
1412 int (*sb_mount) (char *dev_name, struct path *path,
1413 char *type, unsigned long flags, void *data);
1414 int (*sb_umount) (struct vfsmount *mnt, int flags);
1415 int (*sb_pivotroot) (struct path *old_path,
1416 struct path *new_path);
1417 int (*sb_set_mnt_opts) (struct super_block *sb,
1418 struct security_mnt_opts *opts);
1419 void (*sb_clone_mnt_opts) (const struct super_block *oldsb,
1420 struct super_block *newsb);
1421 int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
1423 #ifdef CONFIG_SECURITY_PATH
1424 int (*path_unlink) (struct path *dir, struct dentry *dentry);
1425 int (*path_mkdir) (struct path *dir, struct dentry *dentry, umode_t mode);
1426 int (*path_rmdir) (struct path *dir, struct dentry *dentry);
1427 int (*path_mknod) (struct path *dir, struct dentry *dentry, umode_t mode,
1429 int (*path_truncate) (struct path *path);
1430 int (*path_symlink) (struct path *dir, struct dentry *dentry,
1431 const char *old_name);
1432 int (*path_link) (struct dentry *old_dentry, struct path *new_dir,
1433 struct dentry *new_dentry);
1434 int (*path_rename) (struct path *old_dir, struct dentry *old_dentry,
1435 struct path *new_dir, struct dentry *new_dentry);
1436 int (*path_chmod) (struct path *path, umode_t mode);
1437 int (*path_chown) (struct path *path, uid_t uid, gid_t gid);
1438 int (*path_chroot) (struct path *path);
1441 int (*inode_alloc_security) (struct inode *inode);
1442 void (*inode_free_security) (struct inode *inode);
1443 int (*inode_init_security) (struct inode *inode, struct inode *dir,
1444 const struct qstr *qstr, char **name,
1445 void **value, size_t *len);
1446 int (*inode_create) (struct inode *dir,
1447 struct dentry *dentry, umode_t mode);
1448 int (*inode_link) (struct dentry *old_dentry,
1449 struct inode *dir, struct dentry *new_dentry);
1450 int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
1451 int (*inode_symlink) (struct inode *dir,
1452 struct dentry *dentry, const char *old_name);
1453 int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, umode_t mode);
1454 int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
1455 int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
1456 umode_t mode, dev_t dev);
1457 int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
1458 struct inode *new_dir, struct dentry *new_dentry);
1459 int (*inode_readlink) (struct dentry *dentry);
1460 int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
1461 int (*inode_permission) (struct inode *inode, int mask);
1462 int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
1463 int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
1464 int (*inode_setxattr) (struct dentry *dentry, const char *name,
1465 const void *value, size_t size, int flags);
1466 void (*inode_post_setxattr) (struct dentry *dentry, const char *name,
1467 const void *value, size_t size, int flags);
1468 int (*inode_getxattr) (struct dentry *dentry, const char *name);
1469 int (*inode_listxattr) (struct dentry *dentry);
1470 int (*inode_removexattr) (struct dentry *dentry, const char *name);
1471 int (*inode_need_killpriv) (struct dentry *dentry);
1472 int (*inode_killpriv) (struct dentry *dentry);
1473 int (*inode_getsecurity) (const struct inode *inode, const char *name, void **buffer, bool alloc);
1474 int (*inode_setsecurity) (struct inode *inode, const char *name, const void *value, size_t size, int flags);
1475 int (*inode_listsecurity) (struct inode *inode, char *buffer, size_t buffer_size);
1476 void (*inode_getsecid) (const struct inode *inode, u32 *secid);
1478 int (*file_permission) (struct file *file, int mask);
1479 int (*file_alloc_security) (struct file *file);
1480 void (*file_free_security) (struct file *file);
1481 int (*file_ioctl) (struct file *file, unsigned int cmd,
1483 int (*file_mmap) (struct file *file,
1484 unsigned long reqprot, unsigned long prot,
1485 unsigned long flags, unsigned long addr,
1486 unsigned long addr_only);
1487 int (*file_mprotect) (struct vm_area_struct *vma,
1488 unsigned long reqprot,
1489 unsigned long prot);
1490 int (*file_lock) (struct file *file, unsigned int cmd);
1491 int (*file_fcntl) (struct file *file, unsigned int cmd,
1493 int (*file_set_fowner) (struct file *file);
1494 int (*file_send_sigiotask) (struct task_struct *tsk,
1495 struct fown_struct *fown, int sig);
1496 int (*file_receive) (struct file *file);
1497 int (*file_open) (struct file *file, const struct cred *cred);
1499 int (*task_create) (unsigned long clone_flags);
1500 void (*task_free) (struct task_struct *task);
1501 int (*cred_alloc_blank) (struct cred *cred, gfp_t gfp);
1502 void (*cred_free) (struct cred *cred);
1503 int (*cred_prepare)(struct cred *new, const struct cred *old,
1505 void (*cred_transfer)(struct cred *new, const struct cred *old);
1506 int (*kernel_act_as)(struct cred *new, u32 secid);
1507 int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
1508 int (*kernel_module_request)(char *kmod_name);
1509 int (*task_fix_setuid) (struct cred *new, const struct cred *old,
1511 int (*task_setpgid) (struct task_struct *p, pid_t pgid);
1512 int (*task_getpgid) (struct task_struct *p);
1513 int (*task_getsid) (struct task_struct *p);
1514 void (*task_getsecid) (struct task_struct *p, u32 *secid);
1515 int (*task_setnice) (struct task_struct *p, int nice);
1516 int (*task_setioprio) (struct task_struct *p, int ioprio);
1517 int (*task_getioprio) (struct task_struct *p);
1518 int (*task_setrlimit) (struct task_struct *p, unsigned int resource,
1519 struct rlimit *new_rlim);
1520 int (*task_setscheduler) (struct task_struct *p);
1521 int (*task_getscheduler) (struct task_struct *p);
1522 int (*task_movememory) (struct task_struct *p);
1523 int (*task_kill) (struct task_struct *p,
1524 struct siginfo *info, int sig, u32 secid);
1525 int (*task_wait) (struct task_struct *p);
1526 int (*task_prctl) (int option, unsigned long arg2,
1527 unsigned long arg3, unsigned long arg4,
1528 unsigned long arg5);
1529 void (*task_to_inode) (struct task_struct *p, struct inode *inode);
1531 int (*ipc_permission) (struct kern_ipc_perm *ipcp, short flag);
1532 void (*ipc_getsecid) (struct kern_ipc_perm *ipcp, u32 *secid);
1534 int (*msg_msg_alloc_security) (struct msg_msg *msg);
1535 void (*msg_msg_free_security) (struct msg_msg *msg);
1537 int (*msg_queue_alloc_security) (struct msg_queue *msq);
1538 void (*msg_queue_free_security) (struct msg_queue *msq);
1539 int (*msg_queue_associate) (struct msg_queue *msq, int msqflg);
1540 int (*msg_queue_msgctl) (struct msg_queue *msq, int cmd);
1541 int (*msg_queue_msgsnd) (struct msg_queue *msq,
1542 struct msg_msg *msg, int msqflg);
1543 int (*msg_queue_msgrcv) (struct msg_queue *msq,
1544 struct msg_msg *msg,
1545 struct task_struct *target,
1546 long type, int mode);
1548 int (*shm_alloc_security) (struct shmid_kernel *shp);
1549 void (*shm_free_security) (struct shmid_kernel *shp);
1550 int (*shm_associate) (struct shmid_kernel *shp, int shmflg);
1551 int (*shm_shmctl) (struct shmid_kernel *shp, int cmd);
1552 int (*shm_shmat) (struct shmid_kernel *shp,
1553 char __user *shmaddr, int shmflg);
1555 int (*sem_alloc_security) (struct sem_array *sma);
1556 void (*sem_free_security) (struct sem_array *sma);
1557 int (*sem_associate) (struct sem_array *sma, int semflg);
1558 int (*sem_semctl) (struct sem_array *sma, int cmd);
1559 int (*sem_semop) (struct sem_array *sma,
1560 struct sembuf *sops, unsigned nsops, int alter);
1562 int (*netlink_send) (struct sock *sk, struct sk_buff *skb);
1564 void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1566 int (*getprocattr) (struct task_struct *p, char *name, char **value);
1567 int (*setprocattr) (struct task_struct *p, char *name, void *value, size_t size);
1568 int (*secid_to_secctx) (u32 secid, char **secdata, u32 *seclen);
1569 int (*secctx_to_secid) (const char *secdata, u32 seclen, u32 *secid);
1570 void (*release_secctx) (char *secdata, u32 seclen);
1572 int (*inode_notifysecctx)(struct inode *inode, void *ctx, u32 ctxlen);
1573 int (*inode_setsecctx)(struct dentry *dentry, void *ctx, u32 ctxlen);
1574 int (*inode_getsecctx)(struct inode *inode, void **ctx, u32 *ctxlen);
1576 #ifdef CONFIG_SECURITY_NETWORK
1577 int (*unix_stream_connect) (struct sock *sock, struct sock *other, struct sock *newsk);
1578 int (*unix_may_send) (struct socket *sock, struct socket *other);
1580 int (*socket_create) (int family, int type, int protocol, int kern);
1581 int (*socket_post_create) (struct socket *sock, int family,
1582 int type, int protocol, int kern);
1583 int (*socket_bind) (struct socket *sock,
1584 struct sockaddr *address, int addrlen);
1585 int (*socket_connect) (struct socket *sock,
1586 struct sockaddr *address, int addrlen);
1587 int (*socket_listen) (struct socket *sock, int backlog);
1588 int (*socket_accept) (struct socket *sock, struct socket *newsock);
1589 int (*socket_sendmsg) (struct socket *sock,
1590 struct msghdr *msg, int size);
1591 int (*socket_recvmsg) (struct socket *sock,
1592 struct msghdr *msg, int size, int flags);
1593 int (*socket_getsockname) (struct socket *sock);
1594 int (*socket_getpeername) (struct socket *sock);
1595 int (*socket_getsockopt) (struct socket *sock, int level, int optname);
1596 int (*socket_setsockopt) (struct socket *sock, int level, int optname);
1597 int (*socket_shutdown) (struct socket *sock, int how);
1598 int (*socket_sock_rcv_skb) (struct sock *sk, struct sk_buff *skb);
1599 int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
1600 int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
1601 int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
1602 void (*sk_free_security) (struct sock *sk);
1603 void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
1604 void (*sk_getsecid) (struct sock *sk, u32 *secid);
1605 void (*sock_graft) (struct sock *sk, struct socket *parent);
1606 int (*inet_conn_request) (struct sock *sk, struct sk_buff *skb,
1607 struct request_sock *req);
1608 void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req);
1609 void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb);
1610 int (*secmark_relabel_packet) (u32 secid);
1611 void (*secmark_refcount_inc) (void);
1612 void (*secmark_refcount_dec) (void);
1613 void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
1614 int (*tun_dev_create)(void);
1615 void (*tun_dev_post_create)(struct sock *sk);
1616 int (*tun_dev_attach)(struct sock *sk);
1617 #endif /* CONFIG_SECURITY_NETWORK */
1619 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1620 int (*xfrm_policy_alloc_security) (struct xfrm_sec_ctx **ctxp,
1621 struct xfrm_user_sec_ctx *sec_ctx);
1622 int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
1623 void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
1624 int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
1625 int (*xfrm_state_alloc_security) (struct xfrm_state *x,
1626 struct xfrm_user_sec_ctx *sec_ctx,
1628 void (*xfrm_state_free_security) (struct xfrm_state *x);
1629 int (*xfrm_state_delete_security) (struct xfrm_state *x);
1630 int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1631 int (*xfrm_state_pol_flow_match) (struct xfrm_state *x,
1632 struct xfrm_policy *xp,
1633 const struct flowi *fl);
1634 int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall);
1635 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1637 /* key management security hooks */
1639 int (*key_alloc) (struct key *key, const struct cred *cred, unsigned long flags);
1640 void (*key_free) (struct key *key);
1641 int (*key_permission) (key_ref_t key_ref,
1642 const struct cred *cred,
1644 int (*key_getsecurity)(struct key *key, char **_buffer);
1645 #endif /* CONFIG_KEYS */
1648 int (*audit_rule_init) (u32 field, u32 op, char *rulestr, void **lsmrule);
1649 int (*audit_rule_known) (struct audit_krule *krule);
1650 int (*audit_rule_match) (u32 secid, u32 field, u32 op, void *lsmrule,
1651 struct audit_context *actx);
1652 void (*audit_rule_free) (void *lsmrule);
1653 #endif /* CONFIG_AUDIT */
1657 extern int security_init(void);
1658 extern int security_module_enable(struct security_operations *ops);
1659 extern int register_security(struct security_operations *ops);
1660 extern void __init security_fixup_ops(struct security_operations *ops);
1663 /* Security operations */
1664 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
1665 int security_ptrace_traceme(struct task_struct *parent);
1666 int security_capget(struct task_struct *target,
1667 kernel_cap_t *effective,
1668 kernel_cap_t *inheritable,
1669 kernel_cap_t *permitted);
1670 int security_capset(struct cred *new, const struct cred *old,
1671 const kernel_cap_t *effective,
1672 const kernel_cap_t *inheritable,
1673 const kernel_cap_t *permitted);
1674 int security_capable(const struct cred *cred, struct user_namespace *ns,
1676 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
1678 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
1679 int security_quota_on(struct dentry *dentry);
1680 int security_syslog(int type);
1681 int security_settime(const struct timespec *ts, const struct timezone *tz);
1682 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
1683 int security_bprm_set_creds(struct linux_binprm *bprm);
1684 int security_bprm_check(struct linux_binprm *bprm);
1685 void security_bprm_committing_creds(struct linux_binprm *bprm);
1686 void security_bprm_committed_creds(struct linux_binprm *bprm);
1687 int security_bprm_secureexec(struct linux_binprm *bprm);
1688 int security_sb_alloc(struct super_block *sb);
1689 void security_sb_free(struct super_block *sb);
1690 int security_sb_copy_data(char *orig, char *copy);
1691 int security_sb_remount(struct super_block *sb, void *data);
1692 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
1693 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
1694 int security_sb_statfs(struct dentry *dentry);
1695 int security_sb_mount(char *dev_name, struct path *path,
1696 char *type, unsigned long flags, void *data);
1697 int security_sb_umount(struct vfsmount *mnt, int flags);
1698 int security_sb_pivotroot(struct path *old_path, struct path *new_path);
1699 int security_sb_set_mnt_opts(struct super_block *sb, struct security_mnt_opts *opts);
1700 void security_sb_clone_mnt_opts(const struct super_block *oldsb,
1701 struct super_block *newsb);
1702 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
1704 int security_inode_alloc(struct inode *inode);
1705 void security_inode_free(struct inode *inode);
1706 int security_inode_init_security(struct inode *inode, struct inode *dir,
1707 const struct qstr *qstr,
1708 initxattrs initxattrs, void *fs_data);
1709 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
1710 const struct qstr *qstr, char **name,
1711 void **value, size_t *len);
1712 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
1713 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1714 struct dentry *new_dentry);
1715 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
1716 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
1717 const char *old_name);
1718 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
1719 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
1720 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
1721 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
1722 struct inode *new_dir, struct dentry *new_dentry);
1723 int security_inode_readlink(struct dentry *dentry);
1724 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
1725 int security_inode_permission(struct inode *inode, int mask);
1726 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
1727 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
1728 int security_inode_setxattr(struct dentry *dentry, const char *name,
1729 const void *value, size_t size, int flags);
1730 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1731 const void *value, size_t size, int flags);
1732 int security_inode_getxattr(struct dentry *dentry, const char *name);
1733 int security_inode_listxattr(struct dentry *dentry);
1734 int security_inode_removexattr(struct dentry *dentry, const char *name);
1735 int security_inode_need_killpriv(struct dentry *dentry);
1736 int security_inode_killpriv(struct dentry *dentry);
1737 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
1738 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1739 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
1740 void security_inode_getsecid(const struct inode *inode, u32 *secid);
1741 int security_file_permission(struct file *file, int mask);
1742 int security_file_alloc(struct file *file);
1743 void security_file_free(struct file *file);
1744 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
1745 int security_file_mmap(struct file *file, unsigned long reqprot,
1746 unsigned long prot, unsigned long flags,
1747 unsigned long addr, unsigned long addr_only);
1748 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1749 unsigned long prot);
1750 int security_file_lock(struct file *file, unsigned int cmd);
1751 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
1752 int security_file_set_fowner(struct file *file);
1753 int security_file_send_sigiotask(struct task_struct *tsk,
1754 struct fown_struct *fown, int sig);
1755 int security_file_receive(struct file *file);
1756 int security_file_open(struct file *file, const struct cred *cred);
1757 int security_task_create(unsigned long clone_flags);
1758 void security_task_free(struct task_struct *task);
1759 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
1760 void security_cred_free(struct cred *cred);
1761 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
1762 void security_transfer_creds(struct cred *new, const struct cred *old);
1763 int security_kernel_act_as(struct cred *new, u32 secid);
1764 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
1765 int security_kernel_module_request(char *kmod_name);
1766 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1768 int security_task_setpgid(struct task_struct *p, pid_t pgid);
1769 int security_task_getpgid(struct task_struct *p);
1770 int security_task_getsid(struct task_struct *p);
1771 void security_task_getsecid(struct task_struct *p, u32 *secid);
1772 int security_task_setnice(struct task_struct *p, int nice);
1773 int security_task_setioprio(struct task_struct *p, int ioprio);
1774 int security_task_getioprio(struct task_struct *p);
1775 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
1776 struct rlimit *new_rlim);
1777 int security_task_setscheduler(struct task_struct *p);
1778 int security_task_getscheduler(struct task_struct *p);
1779 int security_task_movememory(struct task_struct *p);
1780 int security_task_kill(struct task_struct *p, struct siginfo *info,
1781 int sig, u32 secid);
1782 int security_task_wait(struct task_struct *p);
1783 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1784 unsigned long arg4, unsigned long arg5);
1785 void security_task_to_inode(struct task_struct *p, struct inode *inode);
1786 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
1787 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
1788 int security_msg_msg_alloc(struct msg_msg *msg);
1789 void security_msg_msg_free(struct msg_msg *msg);
1790 int security_msg_queue_alloc(struct msg_queue *msq);
1791 void security_msg_queue_free(struct msg_queue *msq);
1792 int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
1793 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
1794 int security_msg_queue_msgsnd(struct msg_queue *msq,
1795 struct msg_msg *msg, int msqflg);
1796 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1797 struct task_struct *target, long type, int mode);
1798 int security_shm_alloc(struct shmid_kernel *shp);
1799 void security_shm_free(struct shmid_kernel *shp);
1800 int security_shm_associate(struct shmid_kernel *shp, int shmflg);
1801 int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
1802 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
1803 int security_sem_alloc(struct sem_array *sma);
1804 void security_sem_free(struct sem_array *sma);
1805 int security_sem_associate(struct sem_array *sma, int semflg);
1806 int security_sem_semctl(struct sem_array *sma, int cmd);
1807 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1808 unsigned nsops, int alter);
1809 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
1810 int security_getprocattr(struct task_struct *p, char *name, char **value);
1811 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
1812 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
1813 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
1814 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
1815 void security_release_secctx(char *secdata, u32 seclen);
1817 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
1818 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
1819 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
1820 #else /* CONFIG_SECURITY */
1821 struct security_mnt_opts {
1824 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
1828 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
1833 * This is the default capabilities functionality. Most of these functions
1834 * are just stubbed out, but a few must call the proper capable code.
1837 static inline int security_init(void)
1842 static inline int security_ptrace_access_check(struct task_struct *child,
1845 return cap_ptrace_access_check(child, mode);
1848 static inline int security_ptrace_traceme(struct task_struct *parent)
1850 return cap_ptrace_traceme(parent);
1853 static inline int security_capget(struct task_struct *target,
1854 kernel_cap_t *effective,
1855 kernel_cap_t *inheritable,
1856 kernel_cap_t *permitted)
1858 return cap_capget(target, effective, inheritable, permitted);
1861 static inline int security_capset(struct cred *new,
1862 const struct cred *old,
1863 const kernel_cap_t *effective,
1864 const kernel_cap_t *inheritable,
1865 const kernel_cap_t *permitted)
1867 return cap_capset(new, old, effective, inheritable, permitted);
1870 static inline int security_capable(const struct cred *cred,
1871 struct user_namespace *ns, int cap)
1873 return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT);
1876 static inline int security_capable_noaudit(const struct cred *cred,
1877 struct user_namespace *ns, int cap) {
1878 return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
1881 static inline int security_quotactl(int cmds, int type, int id,
1882 struct super_block *sb)
1887 static inline int security_quota_on(struct dentry *dentry)
1892 static inline int security_syslog(int type)
1897 static inline int security_settime(const struct timespec *ts,
1898 const struct timezone *tz)
1900 return cap_settime(ts, tz);
1903 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
1905 return cap_vm_enough_memory(mm, pages);
1908 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
1910 return cap_bprm_set_creds(bprm);
1913 static inline int security_bprm_check(struct linux_binprm *bprm)
1918 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
1922 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
1926 static inline int security_bprm_secureexec(struct linux_binprm *bprm)
1928 return cap_bprm_secureexec(bprm);
1931 static inline int security_sb_alloc(struct super_block *sb)
1936 static inline void security_sb_free(struct super_block *sb)
1939 static inline int security_sb_copy_data(char *orig, char *copy)
1944 static inline int security_sb_remount(struct super_block *sb, void *data)
1949 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
1954 static inline int security_sb_show_options(struct seq_file *m,
1955 struct super_block *sb)
1960 static inline int security_sb_statfs(struct dentry *dentry)
1965 static inline int security_sb_mount(char *dev_name, struct path *path,
1966 char *type, unsigned long flags,
1972 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
1977 static inline int security_sb_pivotroot(struct path *old_path,
1978 struct path *new_path)
1983 static inline int security_sb_set_mnt_opts(struct super_block *sb,
1984 struct security_mnt_opts *opts)
1989 static inline void security_sb_clone_mnt_opts(const struct super_block *oldsb,
1990 struct super_block *newsb)
1993 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
1998 static inline int security_inode_alloc(struct inode *inode)
2003 static inline void security_inode_free(struct inode *inode)
2006 static inline int security_inode_init_security(struct inode *inode,
2008 const struct qstr *qstr,
2009 const initxattrs initxattrs,
2015 static inline int security_old_inode_init_security(struct inode *inode,
2017 const struct qstr *qstr,
2018 char **name, void **value,
2024 static inline int security_inode_create(struct inode *dir,
2025 struct dentry *dentry,
2031 static inline int security_inode_link(struct dentry *old_dentry,
2033 struct dentry *new_dentry)
2038 static inline int security_inode_unlink(struct inode *dir,
2039 struct dentry *dentry)
2044 static inline int security_inode_symlink(struct inode *dir,
2045 struct dentry *dentry,
2046 const char *old_name)
2051 static inline int security_inode_mkdir(struct inode *dir,
2052 struct dentry *dentry,
2058 static inline int security_inode_rmdir(struct inode *dir,
2059 struct dentry *dentry)
2064 static inline int security_inode_mknod(struct inode *dir,
2065 struct dentry *dentry,
2066 int mode, dev_t dev)
2071 static inline int security_inode_rename(struct inode *old_dir,
2072 struct dentry *old_dentry,
2073 struct inode *new_dir,
2074 struct dentry *new_dentry)
2079 static inline int security_inode_readlink(struct dentry *dentry)
2084 static inline int security_inode_follow_link(struct dentry *dentry,
2085 struct nameidata *nd)
2090 static inline int security_inode_permission(struct inode *inode, int mask)
2095 static inline int security_inode_setattr(struct dentry *dentry,
2101 static inline int security_inode_getattr(struct vfsmount *mnt,
2102 struct dentry *dentry)
2107 static inline int security_inode_setxattr(struct dentry *dentry,
2108 const char *name, const void *value, size_t size, int flags)
2110 return cap_inode_setxattr(dentry, name, value, size, flags);
2113 static inline void security_inode_post_setxattr(struct dentry *dentry,
2114 const char *name, const void *value, size_t size, int flags)
2117 static inline int security_inode_getxattr(struct dentry *dentry,
2123 static inline int security_inode_listxattr(struct dentry *dentry)
2128 static inline int security_inode_removexattr(struct dentry *dentry,
2131 return cap_inode_removexattr(dentry, name);
2134 static inline int security_inode_need_killpriv(struct dentry *dentry)
2136 return cap_inode_need_killpriv(dentry);
2139 static inline int security_inode_killpriv(struct dentry *dentry)
2141 return cap_inode_killpriv(dentry);
2144 static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
2149 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
2154 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
2159 static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
2164 static inline int security_file_permission(struct file *file, int mask)
2169 static inline int security_file_alloc(struct file *file)
2174 static inline void security_file_free(struct file *file)
2177 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
2183 static inline int security_file_mmap(struct file *file, unsigned long reqprot,
2185 unsigned long flags,
2187 unsigned long addr_only)
2189 return cap_file_mmap(file, reqprot, prot, flags, addr, addr_only);
2192 static inline int security_file_mprotect(struct vm_area_struct *vma,
2193 unsigned long reqprot,
2199 static inline int security_file_lock(struct file *file, unsigned int cmd)
2204 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
2210 static inline int security_file_set_fowner(struct file *file)
2215 static inline int security_file_send_sigiotask(struct task_struct *tsk,
2216 struct fown_struct *fown,
2222 static inline int security_file_receive(struct file *file)
2227 static inline int security_file_open(struct file *file,
2228 const struct cred *cred)
2233 static inline int security_task_create(unsigned long clone_flags)
2238 static inline void security_task_free(struct task_struct *task)
2241 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
2246 static inline void security_cred_free(struct cred *cred)
2249 static inline int security_prepare_creds(struct cred *new,
2250 const struct cred *old,
2256 static inline void security_transfer_creds(struct cred *new,
2257 const struct cred *old)
2261 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
2266 static inline int security_kernel_create_files_as(struct cred *cred,
2267 struct inode *inode)
2272 static inline int security_kernel_module_request(char *kmod_name)
2277 static inline int security_task_fix_setuid(struct cred *new,
2278 const struct cred *old,
2281 return cap_task_fix_setuid(new, old, flags);
2284 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
2289 static inline int security_task_getpgid(struct task_struct *p)
2294 static inline int security_task_getsid(struct task_struct *p)
2299 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
2304 static inline int security_task_setnice(struct task_struct *p, int nice)
2306 return cap_task_setnice(p, nice);
2309 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
2311 return cap_task_setioprio(p, ioprio);
2314 static inline int security_task_getioprio(struct task_struct *p)
2319 static inline int security_task_setrlimit(struct task_struct *p,
2320 unsigned int resource,
2321 struct rlimit *new_rlim)
2326 static inline int security_task_setscheduler(struct task_struct *p)
2328 return cap_task_setscheduler(p);
2331 static inline int security_task_getscheduler(struct task_struct *p)
2336 static inline int security_task_movememory(struct task_struct *p)
2341 static inline int security_task_kill(struct task_struct *p,
2342 struct siginfo *info, int sig,
2348 static inline int security_task_wait(struct task_struct *p)
2353 static inline int security_task_prctl(int option, unsigned long arg2,
2358 return cap_task_prctl(option, arg2, arg3, arg3, arg5);
2361 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
2364 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
2370 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
2375 static inline int security_msg_msg_alloc(struct msg_msg *msg)
2380 static inline void security_msg_msg_free(struct msg_msg *msg)
2383 static inline int security_msg_queue_alloc(struct msg_queue *msq)
2388 static inline void security_msg_queue_free(struct msg_queue *msq)
2391 static inline int security_msg_queue_associate(struct msg_queue *msq,
2397 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
2402 static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
2403 struct msg_msg *msg, int msqflg)
2408 static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
2409 struct msg_msg *msg,
2410 struct task_struct *target,
2411 long type, int mode)
2416 static inline int security_shm_alloc(struct shmid_kernel *shp)
2421 static inline void security_shm_free(struct shmid_kernel *shp)
2424 static inline int security_shm_associate(struct shmid_kernel *shp,
2430 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
2435 static inline int security_shm_shmat(struct shmid_kernel *shp,
2436 char __user *shmaddr, int shmflg)
2441 static inline int security_sem_alloc(struct sem_array *sma)
2446 static inline void security_sem_free(struct sem_array *sma)
2449 static inline int security_sem_associate(struct sem_array *sma, int semflg)
2454 static inline int security_sem_semctl(struct sem_array *sma, int cmd)
2459 static inline int security_sem_semop(struct sem_array *sma,
2460 struct sembuf *sops, unsigned nsops,
2466 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
2469 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
2474 static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2479 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
2481 return cap_netlink_send(sk, skb);
2484 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2489 static inline int security_secctx_to_secid(const char *secdata,
2496 static inline void security_release_secctx(char *secdata, u32 seclen)
2500 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
2504 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
2508 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
2512 #endif /* CONFIG_SECURITY */
2514 #ifdef CONFIG_SECURITY_NETWORK
2516 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
2517 int security_unix_may_send(struct socket *sock, struct socket *other);
2518 int security_socket_create(int family, int type, int protocol, int kern);
2519 int security_socket_post_create(struct socket *sock, int family,
2520 int type, int protocol, int kern);
2521 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
2522 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
2523 int security_socket_listen(struct socket *sock, int backlog);
2524 int security_socket_accept(struct socket *sock, struct socket *newsock);
2525 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
2526 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2527 int size, int flags);
2528 int security_socket_getsockname(struct socket *sock);
2529 int security_socket_getpeername(struct socket *sock);
2530 int security_socket_getsockopt(struct socket *sock, int level, int optname);
2531 int security_socket_setsockopt(struct socket *sock, int level, int optname);
2532 int security_socket_shutdown(struct socket *sock, int how);
2533 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
2534 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2535 int __user *optlen, unsigned len);
2536 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
2537 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
2538 void security_sk_free(struct sock *sk);
2539 void security_sk_clone(const struct sock *sk, struct sock *newsk);
2540 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
2541 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
2542 void security_sock_graft(struct sock*sk, struct socket *parent);
2543 int security_inet_conn_request(struct sock *sk,
2544 struct sk_buff *skb, struct request_sock *req);
2545 void security_inet_csk_clone(struct sock *newsk,
2546 const struct request_sock *req);
2547 void security_inet_conn_established(struct sock *sk,
2548 struct sk_buff *skb);
2549 int security_secmark_relabel_packet(u32 secid);
2550 void security_secmark_refcount_inc(void);
2551 void security_secmark_refcount_dec(void);
2552 int security_tun_dev_create(void);
2553 void security_tun_dev_post_create(struct sock *sk);
2554 int security_tun_dev_attach(struct sock *sk);
2556 #else /* CONFIG_SECURITY_NETWORK */
2557 static inline int security_unix_stream_connect(struct sock *sock,
2564 static inline int security_unix_may_send(struct socket *sock,
2565 struct socket *other)
2570 static inline int security_socket_create(int family, int type,
2571 int protocol, int kern)
2576 static inline int security_socket_post_create(struct socket *sock,
2579 int protocol, int kern)
2584 static inline int security_socket_bind(struct socket *sock,
2585 struct sockaddr *address,
2591 static inline int security_socket_connect(struct socket *sock,
2592 struct sockaddr *address,
2598 static inline int security_socket_listen(struct socket *sock, int backlog)
2603 static inline int security_socket_accept(struct socket *sock,
2604 struct socket *newsock)
2609 static inline int security_socket_sendmsg(struct socket *sock,
2610 struct msghdr *msg, int size)
2615 static inline int security_socket_recvmsg(struct socket *sock,
2616 struct msghdr *msg, int size,
2622 static inline int security_socket_getsockname(struct socket *sock)
2627 static inline int security_socket_getpeername(struct socket *sock)
2632 static inline int security_socket_getsockopt(struct socket *sock,
2633 int level, int optname)
2638 static inline int security_socket_setsockopt(struct socket *sock,
2639 int level, int optname)
2644 static inline int security_socket_shutdown(struct socket *sock, int how)
2648 static inline int security_sock_rcv_skb(struct sock *sk,
2649 struct sk_buff *skb)
2654 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2655 int __user *optlen, unsigned len)
2657 return -ENOPROTOOPT;
2660 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
2662 return -ENOPROTOOPT;
2665 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2670 static inline void security_sk_free(struct sock *sk)
2674 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
2678 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
2682 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2686 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
2690 static inline int security_inet_conn_request(struct sock *sk,
2691 struct sk_buff *skb, struct request_sock *req)
2696 static inline void security_inet_csk_clone(struct sock *newsk,
2697 const struct request_sock *req)
2701 static inline void security_inet_conn_established(struct sock *sk,
2702 struct sk_buff *skb)
2706 static inline int security_secmark_relabel_packet(u32 secid)
2711 static inline void security_secmark_refcount_inc(void)
2715 static inline void security_secmark_refcount_dec(void)
2719 static inline int security_tun_dev_create(void)
2724 static inline void security_tun_dev_post_create(struct sock *sk)
2728 static inline int security_tun_dev_attach(struct sock *sk)
2732 #endif /* CONFIG_SECURITY_NETWORK */
2734 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2736 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx);
2737 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
2738 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
2739 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
2740 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
2741 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2742 struct xfrm_sec_ctx *polsec, u32 secid);
2743 int security_xfrm_state_delete(struct xfrm_state *x);
2744 void security_xfrm_state_free(struct xfrm_state *x);
2745 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
2746 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2747 struct xfrm_policy *xp,
2748 const struct flowi *fl);
2749 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
2750 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
2752 #else /* CONFIG_SECURITY_NETWORK_XFRM */
2754 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
2759 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
2764 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
2768 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
2773 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
2774 struct xfrm_user_sec_ctx *sec_ctx)
2779 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2780 struct xfrm_sec_ctx *polsec, u32 secid)
2785 static inline void security_xfrm_state_free(struct xfrm_state *x)
2789 static inline int security_xfrm_state_delete(struct xfrm_state *x)
2794 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
2799 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2800 struct xfrm_policy *xp, const struct flowi *fl)
2805 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
2810 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2814 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2816 #ifdef CONFIG_SECURITY_PATH
2817 int security_path_unlink(struct path *dir, struct dentry *dentry);
2818 int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode);
2819 int security_path_rmdir(struct path *dir, struct dentry *dentry);
2820 int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode,
2822 int security_path_truncate(struct path *path);
2823 int security_path_symlink(struct path *dir, struct dentry *dentry,
2824 const char *old_name);
2825 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
2826 struct dentry *new_dentry);
2827 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
2828 struct path *new_dir, struct dentry *new_dentry);
2829 int security_path_chmod(struct path *path, umode_t mode);
2830 int security_path_chown(struct path *path, uid_t uid, gid_t gid);
2831 int security_path_chroot(struct path *path);
2832 #else /* CONFIG_SECURITY_PATH */
2833 static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
2838 static inline int security_path_mkdir(struct path *dir, struct dentry *dentry,
2844 static inline int security_path_rmdir(struct path *dir, struct dentry *dentry)
2849 static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
2850 umode_t mode, unsigned int dev)
2855 static inline int security_path_truncate(struct path *path)
2860 static inline int security_path_symlink(struct path *dir, struct dentry *dentry,
2861 const char *old_name)
2866 static inline int security_path_link(struct dentry *old_dentry,
2867 struct path *new_dir,
2868 struct dentry *new_dentry)
2873 static inline int security_path_rename(struct path *old_dir,
2874 struct dentry *old_dentry,
2875 struct path *new_dir,
2876 struct dentry *new_dentry)
2881 static inline int security_path_chmod(struct path *path, umode_t mode)
2886 static inline int security_path_chown(struct path *path, uid_t uid, gid_t gid)
2891 static inline int security_path_chroot(struct path *path)
2895 #endif /* CONFIG_SECURITY_PATH */
2898 #ifdef CONFIG_SECURITY
2900 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
2901 void security_key_free(struct key *key);
2902 int security_key_permission(key_ref_t key_ref,
2903 const struct cred *cred, key_perm_t perm);
2904 int security_key_getsecurity(struct key *key, char **_buffer);
2908 static inline int security_key_alloc(struct key *key,
2909 const struct cred *cred,
2910 unsigned long flags)
2915 static inline void security_key_free(struct key *key)
2919 static inline int security_key_permission(key_ref_t key_ref,
2920 const struct cred *cred,
2926 static inline int security_key_getsecurity(struct key *key, char **_buffer)
2933 #endif /* CONFIG_KEYS */
2936 #ifdef CONFIG_SECURITY
2937 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
2938 int security_audit_rule_known(struct audit_krule *krule);
2939 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
2940 struct audit_context *actx);
2941 void security_audit_rule_free(void *lsmrule);
2945 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
2951 static inline int security_audit_rule_known(struct audit_krule *krule)
2956 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
2957 void *lsmrule, struct audit_context *actx)
2962 static inline void security_audit_rule_free(void *lsmrule)
2965 #endif /* CONFIG_SECURITY */
2966 #endif /* CONFIG_AUDIT */
2968 #ifdef CONFIG_SECURITYFS
2970 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
2971 struct dentry *parent, void *data,
2972 const struct file_operations *fops);
2973 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
2974 extern void securityfs_remove(struct dentry *dentry);
2976 #else /* CONFIG_SECURITYFS */
2978 static inline struct dentry *securityfs_create_dir(const char *name,
2979 struct dentry *parent)
2981 return ERR_PTR(-ENODEV);
2984 static inline struct dentry *securityfs_create_file(const char *name,
2986 struct dentry *parent,
2988 const struct file_operations *fops)
2990 return ERR_PTR(-ENODEV);
2993 static inline void securityfs_remove(struct dentry *dentry)
2998 #ifdef CONFIG_SECURITY
3000 static inline char *alloc_secdata(void)
3002 return (char *)get_zeroed_page(GFP_KERNEL);
3005 static inline void free_secdata(void *secdata)
3007 free_page((unsigned long)secdata);
3012 static inline char *alloc_secdata(void)
3017 static inline void free_secdata(void *secdata)
3019 #endif /* CONFIG_SECURITY */
3021 #endif /* ! __LINUX_SECURITY_H */