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>
29 #include <linux/string.h>
49 struct file_operations;
57 /* Maximum number of letters for an LSM name string */
58 #define SECURITY_NAME_MAX 10
60 /* If capable should audit the security request */
61 #define SECURITY_CAP_NOAUDIT 0
62 #define SECURITY_CAP_AUDIT 1
66 struct user_namespace;
70 * These functions are in security/capability.c and are used
71 * as the default capabilities functions
73 extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
75 extern int cap_settime(const struct timespec *ts, const struct timezone *tz);
76 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
77 extern int cap_ptrace_traceme(struct task_struct *parent);
78 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
79 extern int cap_capset(struct cred *new, const struct cred *old,
80 const kernel_cap_t *effective,
81 const kernel_cap_t *inheritable,
82 const kernel_cap_t *permitted);
83 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
84 extern int cap_bprm_secureexec(struct linux_binprm *bprm);
85 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
86 const void *value, size_t size, int flags);
87 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
88 extern int cap_inode_need_killpriv(struct dentry *dentry);
89 extern int cap_inode_killpriv(struct dentry *dentry);
90 extern int cap_mmap_addr(unsigned long addr);
91 extern int cap_mmap_file(struct file *file, unsigned long reqprot,
92 unsigned long prot, unsigned long flags);
93 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
94 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
95 unsigned long arg4, unsigned long arg5);
96 extern int cap_task_setscheduler(struct task_struct *p);
97 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
98 extern int cap_task_setnice(struct task_struct *p, int nice);
99 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
108 struct xfrm_selector;
111 struct xfrm_user_sec_ctx;
114 extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
116 void reset_security_ops(void);
119 extern unsigned long mmap_min_addr;
120 extern unsigned long dac_mmap_min_addr;
122 #define mmap_min_addr 0UL
123 #define dac_mmap_min_addr 0UL
127 * Values used in the task_security_ops calls
129 /* setuid or setgid, id0 == uid or gid */
130 #define LSM_SETID_ID 1
132 /* setreuid or setregid, id0 == real, id1 == eff */
133 #define LSM_SETID_RE 2
135 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
136 #define LSM_SETID_RES 4
138 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
139 #define LSM_SETID_FS 8
141 /* forward declares to avoid warnings */
145 /* bprm->unsafe reasons */
146 #define LSM_UNSAFE_SHARE 1
147 #define LSM_UNSAFE_PTRACE 2
148 #define LSM_UNSAFE_PTRACE_CAP 4
149 #define LSM_UNSAFE_NO_NEW_PRIVS 8
152 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
153 void __user *buffer, size_t *lenp, loff_t *ppos);
156 /* security_inode_init_security callback function to write xattrs */
157 typedef int (*initxattrs) (struct inode *inode,
158 const struct xattr *xattr_array, void *fs_data);
160 #ifdef CONFIG_SECURITY
162 struct security_mnt_opts {
168 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
170 opts->mnt_opts = NULL;
171 opts->mnt_opts_flags = NULL;
172 opts->num_mnt_opts = 0;
175 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
179 for (i = 0; i < opts->num_mnt_opts; i++)
180 kfree(opts->mnt_opts[i]);
181 kfree(opts->mnt_opts);
182 opts->mnt_opts = NULL;
183 kfree(opts->mnt_opts_flags);
184 opts->mnt_opts_flags = NULL;
185 opts->num_mnt_opts = 0;
189 * struct security_operations - main security structure
191 * Security module identifier.
194 * A string that acts as a unique identifier for the LSM with max number
195 * of characters = SECURITY_NAME_MAX.
197 * Security hooks for program execution operations.
200 * Save security information in the bprm->security field, typically based
201 * on information about the bprm->file, for later use by the apply_creds
202 * hook. This hook may also optionally check permissions (e.g. for
203 * transitions between security domains).
204 * This hook may be called multiple times during a single execve, e.g. for
205 * interpreters. The hook can tell whether it has already been called by
206 * checking to see if @bprm->security is non-NULL. If so, then the hook
207 * may decide either to retain the security information saved earlier or
209 * @bprm contains the linux_binprm structure.
210 * Return 0 if the hook is successful and permission is granted.
211 * @bprm_check_security:
212 * This hook mediates the point when a search for a binary handler will
213 * begin. It allows a check the @bprm->security value which is set in the
214 * preceding set_creds call. The primary difference from set_creds is
215 * that the argv list and envp list are reliably available in @bprm. This
216 * hook may be called multiple times during a single execve; and in each
217 * pass set_creds is called first.
218 * @bprm contains the linux_binprm structure.
219 * Return 0 if the hook is successful and permission is granted.
220 * @bprm_committing_creds:
221 * Prepare to install the new security attributes of a process being
222 * transformed by an execve operation, based on the old credentials
223 * pointed to by @current->cred and the information set in @bprm->cred by
224 * the bprm_set_creds hook. @bprm points to the linux_binprm structure.
225 * This hook is a good place to perform state changes on the process such
226 * as closing open file descriptors to which access will no longer be
227 * granted when the attributes are changed. This is called immediately
228 * before commit_creds().
229 * @bprm_committed_creds:
230 * Tidy up after the installation of the new security attributes of a
231 * process being transformed by an execve operation. The new credentials
232 * have, by this point, been set to @current->cred. @bprm points to the
233 * linux_binprm structure. This hook is a good place to perform state
234 * changes on the process such as clearing out non-inheritable signal
235 * state. This is called immediately after commit_creds().
237 * Return a boolean value (0 or 1) indicating whether a "secure exec"
238 * is required. The flag is passed in the auxiliary table
239 * on the initial stack to the ELF interpreter to indicate whether libc
240 * should enable secure mode.
241 * @bprm contains the linux_binprm structure.
243 * Security hooks for filesystem operations.
245 * @sb_alloc_security:
246 * Allocate and attach a security structure to the sb->s_security field.
247 * The s_security field is initialized to NULL when the structure is
249 * @sb contains the super_block structure to be modified.
250 * Return 0 if operation was successful.
252 * Deallocate and clear the sb->s_security field.
253 * @sb contains the super_block structure to be modified.
255 * Check permission before obtaining filesystem statistics for the @mnt
257 * @dentry is a handle on the superblock for the filesystem.
258 * Return 0 if permission is granted.
260 * Check permission before an object specified by @dev_name is mounted on
261 * the mount point named by @nd. For an ordinary mount, @dev_name
262 * identifies a device if the file system type requires a device. For a
263 * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a
264 * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
265 * pathname of the object being mounted.
266 * @dev_name contains the name for object being mounted.
267 * @path contains the path for mount point object.
268 * @type contains the filesystem type.
269 * @flags contains the mount flags.
270 * @data contains the filesystem-specific data.
271 * Return 0 if permission is granted.
273 * Allow mount option data to be copied prior to parsing by the filesystem,
274 * so that the security module can extract security-specific mount
275 * options cleanly (a filesystem may modify the data e.g. with strsep()).
276 * This also allows the original mount data to be stripped of security-
277 * specific options to avoid having to make filesystems aware of them.
278 * @type the type of filesystem being mounted.
279 * @orig the original mount data copied from userspace.
280 * @copy copied data which will be passed to the security module.
281 * Returns 0 if the copy was successful.
283 * Extracts security system specific mount options and verifies no changes
284 * are being made to those options.
285 * @sb superblock being remounted
286 * @data contains the filesystem-specific data.
287 * Return 0 if permission is granted.
289 * Check permission before the @mnt file system is unmounted.
290 * @mnt contains the mounted file system.
291 * @flags contains the unmount flags, e.g. MNT_FORCE.
292 * Return 0 if permission is granted.
294 * Check permission before pivoting the root filesystem.
295 * @old_path contains the path for the new location of the current root (put_old).
296 * @new_path contains the path for the new root (new_root).
297 * Return 0 if permission is granted.
299 * Set the security relevant mount options used for a superblock
300 * @sb the superblock to set security mount options for
301 * @opts binary data structure containing all lsm mount data
302 * @sb_clone_mnt_opts:
303 * Copy all security options from a given superblock to another
304 * @oldsb old superblock which contain information to clone
305 * @newsb new superblock which needs filled in
306 * @sb_parse_opts_str:
307 * Parse a string of security data filling in the opts structure
308 * @options string containing all mount options known by the LSM
309 * @opts binary data structure usable by the LSM
310 * @dentry_init_security:
311 * Compute a context for a dentry as the inode is not yet available
312 * since NFSv4 has no label backed by an EA anyway.
313 * @dentry dentry to use in calculating the context.
314 * @mode mode used to determine resource type.
315 * @name name of the last path component used to create file
316 * @ctx pointer to place the pointer to the resulting context in.
317 * @ctxlen point to place the length of the resulting context.
320 * Security hooks for inode operations.
322 * @inode_alloc_security:
323 * Allocate and attach a security structure to @inode->i_security. The
324 * i_security field is initialized to NULL when the inode structure is
326 * @inode contains the inode structure.
327 * Return 0 if operation was successful.
328 * @inode_free_security:
329 * @inode contains the inode structure.
330 * Deallocate the inode security structure and set @inode->i_security to
332 * @inode_init_security:
333 * Obtain the security attribute name suffix and value to set on a newly
334 * created inode and set up the incore security field for the new inode.
335 * This hook is called by the fs code as part of the inode creation
336 * transaction and provides for atomic labeling of the inode, unlike
337 * the post_create/mkdir/... hooks called by the VFS. The hook function
338 * is expected to allocate the name and value via kmalloc, with the caller
339 * being responsible for calling kfree after using them.
340 * If the security module does not use security attributes or does
341 * not wish to put a security attribute on this particular inode,
342 * then it should return -EOPNOTSUPP to skip this processing.
343 * @inode contains the inode structure of the newly created inode.
344 * @dir contains the inode structure of the parent directory.
345 * @qstr contains the last path component of the new object
346 * @name will be set to the allocated name suffix (e.g. selinux).
347 * @value will be set to the allocated attribute value.
348 * @len will be set to the length of the value.
349 * Returns 0 if @name and @value have been successfully set,
350 * -EOPNOTSUPP if no security attribute is needed, or
351 * -ENOMEM on memory allocation failure.
353 * Check permission to create a regular file.
354 * @dir contains inode structure of the parent of the new file.
355 * @dentry contains the dentry structure for the file to be created.
356 * @mode contains the file mode of the file to be created.
357 * Return 0 if permission is granted.
359 * Check permission before creating a new hard link to a file.
360 * @old_dentry contains the dentry structure for an existing link to the file.
361 * @dir contains the inode structure of the parent directory of the new link.
362 * @new_dentry contains the dentry structure for the new link.
363 * Return 0 if permission is granted.
365 * Check permission before creating a new hard link to a file.
366 * @old_dentry contains the dentry structure for an existing link
368 * @new_dir contains the path structure of the parent directory of
370 * @new_dentry contains the dentry structure for the new link.
371 * Return 0 if permission is granted.
373 * Check the permission to remove a hard link to a file.
374 * @dir contains the inode structure of parent directory of the file.
375 * @dentry contains the dentry structure for file to be unlinked.
376 * Return 0 if permission is granted.
378 * Check the permission to remove a hard link to a file.
379 * @dir contains the path structure of parent directory of the file.
380 * @dentry contains the dentry structure for file to be unlinked.
381 * Return 0 if permission is granted.
383 * Check the permission to create a symbolic link to a file.
384 * @dir contains the inode structure of parent directory of the symbolic link.
385 * @dentry contains the dentry structure of the symbolic link.
386 * @old_name contains the pathname of file.
387 * Return 0 if permission is granted.
389 * Check the permission to create a symbolic link to a file.
390 * @dir contains the path structure of parent directory of
392 * @dentry contains the dentry structure of the symbolic link.
393 * @old_name contains the pathname of file.
394 * Return 0 if permission is granted.
396 * Check permissions to create a new directory in the existing directory
397 * associated with inode structure @dir.
398 * @dir contains the inode structure of parent of the directory to be created.
399 * @dentry contains the dentry structure of new directory.
400 * @mode contains the mode of new directory.
401 * Return 0 if permission is granted.
403 * Check permissions to create a new directory in the existing directory
404 * associated with path structure @path.
405 * @dir contains the path structure of parent of the directory
407 * @dentry contains the dentry structure of new directory.
408 * @mode contains the mode of new directory.
409 * Return 0 if permission is granted.
411 * Check the permission to remove a directory.
412 * @dir contains the inode structure of parent of the directory to be removed.
413 * @dentry contains the dentry structure of directory to be removed.
414 * Return 0 if permission is granted.
416 * Check the permission to remove a directory.
417 * @dir contains the path structure of parent of the directory to be
419 * @dentry contains the dentry structure of directory to be removed.
420 * Return 0 if permission is granted.
422 * Check permissions when creating a special file (or a socket or a fifo
423 * file created via the mknod system call). Note that if mknod operation
424 * is being done for a regular file, then the create hook will be called
426 * @dir contains the inode structure of parent of the new file.
427 * @dentry contains the dentry structure of the new file.
428 * @mode contains the mode of the new file.
429 * @dev contains the device number.
430 * Return 0 if permission is granted.
432 * Check permissions when creating a file. Note that this hook is called
433 * even if mknod operation is being done for a regular file.
434 * @dir contains the path structure of parent of the new file.
435 * @dentry contains the dentry structure of the new file.
436 * @mode contains the mode of the new file.
437 * @dev contains the undecoded device number. Use new_decode_dev() to get
438 * the decoded device number.
439 * Return 0 if permission is granted.
441 * Check for permission to rename a file or directory.
442 * @old_dir contains the inode structure for parent of the old link.
443 * @old_dentry contains the dentry structure of the old link.
444 * @new_dir contains the inode structure for parent of the new link.
445 * @new_dentry contains the dentry structure of the new link.
446 * Return 0 if permission is granted.
448 * Check for permission to rename a file or directory.
449 * @old_dir contains the path structure for parent of the old link.
450 * @old_dentry contains the dentry structure of the old link.
451 * @new_dir contains the path structure for parent of the new link.
452 * @new_dentry contains the dentry structure of the new link.
453 * Return 0 if permission is granted.
455 * Check for permission to change DAC's permission of a file or directory.
456 * @dentry contains the dentry structure.
457 * @mnt contains the vfsmnt structure.
458 * @mode contains DAC's mode.
459 * Return 0 if permission is granted.
461 * Check for permission to change owner/group of a file or directory.
462 * @path contains the path structure.
463 * @uid contains new owner's ID.
464 * @gid contains new group's ID.
465 * Return 0 if permission is granted.
467 * Check for permission to change root directory.
468 * @path contains the path structure.
469 * Return 0 if permission is granted.
471 * Check the permission to read the symbolic link.
472 * @dentry contains the dentry structure for the file link.
473 * Return 0 if permission is granted.
474 * @inode_follow_link:
475 * Check permission to follow a symbolic link when looking up a pathname.
476 * @dentry contains the dentry structure for the link.
477 * @nd contains the nameidata structure for the parent directory.
478 * Return 0 if permission is granted.
480 * Check permission before accessing an inode. This hook is called by the
481 * existing Linux permission function, so a security module can use it to
482 * provide additional checking for existing Linux permission checks.
483 * Notice that this hook is called when a file is opened (as well as many
484 * other operations), whereas the file_security_ops permission hook is
485 * called when the actual read/write operations are performed.
486 * @inode contains the inode structure to check.
487 * @mask contains the permission mask.
488 * Return 0 if permission is granted.
490 * Check permission before setting file attributes. Note that the kernel
491 * call to notify_change is performed from several locations, whenever
492 * file attributes change (such as when a file is truncated, chown/chmod
493 * operations, transferring disk quotas, etc).
494 * @dentry contains the dentry structure for the file.
495 * @attr is the iattr structure containing the new file attributes.
496 * Return 0 if permission is granted.
498 * Check permission before truncating a file.
499 * @path contains the path structure for the file.
500 * Return 0 if permission is granted.
502 * Check permission before obtaining file attributes.
503 * @mnt is the vfsmount where the dentry was looked up
504 * @dentry contains the dentry structure for the file.
505 * Return 0 if permission is granted.
507 * Check permission before setting the extended attributes
508 * @value identified by @name for @dentry.
509 * Return 0 if permission is granted.
510 * @inode_post_setxattr:
511 * Update inode security field after successful setxattr operation.
512 * @value identified by @name for @dentry.
514 * Check permission before obtaining the extended attributes
515 * identified by @name for @dentry.
516 * Return 0 if permission is granted.
518 * Check permission before obtaining the list of extended attribute
520 * Return 0 if permission is granted.
521 * @inode_removexattr:
522 * Check permission before removing the extended attribute
523 * identified by @name for @dentry.
524 * Return 0 if permission is granted.
525 * @inode_getsecurity:
526 * Retrieve a copy of the extended attribute representation of the
527 * security label associated with @name for @inode via @buffer. Note that
528 * @name is the remainder of the attribute name after the security prefix
529 * has been removed. @alloc is used to specify of the call should return a
530 * value via the buffer or just the value length Return size of buffer on
532 * @inode_setsecurity:
533 * Set the security label associated with @name for @inode from the
534 * extended attribute value @value. @size indicates the size of the
535 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
536 * Note that @name is the remainder of the attribute name after the
537 * security. prefix has been removed.
538 * Return 0 on success.
539 * @inode_listsecurity:
540 * Copy the extended attribute names for the security labels
541 * associated with @inode into @buffer. The maximum size of @buffer
542 * is specified by @buffer_size. @buffer may be NULL to request
543 * the size of the buffer required.
544 * Returns number of bytes used/required on success.
545 * @inode_need_killpriv:
546 * Called when an inode has been changed.
547 * @dentry is the dentry being changed.
548 * Return <0 on error to abort the inode change operation.
549 * Return 0 if inode_killpriv does not need to be called.
550 * Return >0 if inode_killpriv does need to be called.
552 * The setuid bit is being removed. Remove similar security labels.
553 * Called with the dentry->d_inode->i_mutex held.
554 * @dentry is the dentry being changed.
555 * Return 0 on success. If error is returned, then the operation
556 * causing setuid bit removal is failed.
558 * Get the secid associated with the node.
559 * @inode contains a pointer to the inode.
560 * @secid contains a pointer to the location where result will be saved.
561 * In case of failure, @secid will be set to zero.
563 * Security hooks for file operations
566 * Check file permissions before accessing an open file. This hook is
567 * called by various operations that read or write files. A security
568 * module can use this hook to perform additional checking on these
569 * operations, e.g. to revalidate permissions on use to support privilege
570 * bracketing or policy changes. Notice that this hook is used when the
571 * actual read/write operations are performed, whereas the
572 * inode_security_ops hook is called when a file is opened (as well as
573 * many other operations).
574 * Caveat: Although this hook can be used to revalidate permissions for
575 * various system call operations that read or write files, it does not
576 * address the revalidation of permissions for memory-mapped files.
577 * Security modules must handle this separately if they need such
579 * @file contains the file structure being accessed.
580 * @mask contains the requested permissions.
581 * Return 0 if permission is granted.
582 * @file_alloc_security:
583 * Allocate and attach a security structure to the file->f_security field.
584 * The security field is initialized to NULL when the structure is first
586 * @file contains the file structure to secure.
587 * Return 0 if the hook is successful and permission is granted.
588 * @file_free_security:
589 * Deallocate and free any security structures stored in file->f_security.
590 * @file contains the file structure being modified.
592 * @file contains the file structure.
593 * @cmd contains the operation to perform.
594 * @arg contains the operational arguments.
595 * Check permission for an ioctl operation on @file. Note that @arg
596 * sometimes represents a user space pointer; in other cases, it may be a
597 * simple integer value. When @arg represents a user space pointer, it
598 * should never be used by the security module.
599 * Return 0 if permission is granted.
601 * Check permissions for a mmap operation at @addr.
602 * @addr contains virtual address that will be used for the operation.
603 * Return 0 if permission is granted.
605 * Check permissions for a mmap operation. The @file may be NULL, e.g.
606 * if mapping anonymous memory.
607 * @file contains the file structure for file to map (may be NULL).
608 * @reqprot contains the protection requested by the application.
609 * @prot contains the protection that will be applied by the kernel.
610 * @flags contains the operational flags.
611 * Return 0 if permission is granted.
613 * Check permissions before changing memory access permissions.
614 * @vma contains the memory region to modify.
615 * @reqprot contains the protection requested by the application.
616 * @prot contains the protection that will be applied by the kernel.
617 * Return 0 if permission is granted.
619 * Check permission before performing file locking operations.
620 * Note: this hook mediates both flock and fcntl style locks.
621 * @file contains the file structure.
622 * @cmd contains the posix-translated lock operation to perform
623 * (e.g. F_RDLCK, F_WRLCK).
624 * Return 0 if permission is granted.
626 * Check permission before allowing the file operation specified by @cmd
627 * from being performed on the file @file. Note that @arg sometimes
628 * represents a user space pointer; in other cases, it may be a simple
629 * integer value. When @arg represents a user space pointer, it should
630 * never be used by the security module.
631 * @file contains the file structure.
632 * @cmd contains the operation to be performed.
633 * @arg contains the operational arguments.
634 * Return 0 if permission is granted.
636 * Save owner security information (typically from current->security) in
637 * file->f_security for later use by the send_sigiotask hook.
638 * @file contains the file structure to update.
639 * Return 0 on success.
640 * @file_send_sigiotask:
641 * Check permission for the file owner @fown to send SIGIO or SIGURG to the
642 * process @tsk. Note that this hook is sometimes called from interrupt.
643 * Note that the fown_struct, @fown, is never outside the context of a
644 * struct file, so the file structure (and associated security information)
645 * can always be obtained:
646 * container_of(fown, struct file, f_owner)
647 * @tsk contains the structure of task receiving signal.
648 * @fown contains the file owner information.
649 * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
650 * Return 0 if permission is granted.
652 * This hook allows security modules to control the ability of a process
653 * to receive an open file descriptor via socket IPC.
654 * @file contains the file structure being received.
655 * Return 0 if permission is granted.
657 * Save open-time permission checking state for later use upon
658 * file_permission, and recheck access if anything has changed
659 * since inode_permission.
661 * Security hooks for task operations.
664 * Check permission before creating a child process. See the clone(2)
665 * manual page for definitions of the @clone_flags.
666 * @clone_flags contains the flags indicating what should be shared.
667 * Return 0 if permission is granted.
669 * @task task being freed
670 * Handle release of task-related resources. (Note that this can be called
671 * from interrupt context.)
673 * @cred points to the credentials.
674 * @gfp indicates the atomicity of any memory allocations.
675 * Only allocate sufficient memory and attach to @cred such that
676 * cred_transfer() will not get ENOMEM.
678 * @cred points to the credentials.
679 * Deallocate and clear the cred->security field in a set of credentials.
681 * @new points to the new credentials.
682 * @old points to the original credentials.
683 * @gfp indicates the atomicity of any memory allocations.
684 * Prepare a new set of credentials by copying the data from the old set.
686 * @new points to the new credentials.
687 * @old points to the original credentials.
688 * Transfer data from original creds to new creds
690 * Set the credentials for a kernel service to act as (subjective context).
691 * @new points to the credentials to be modified.
692 * @secid specifies the security ID to be set
693 * The current task must be the one that nominated @secid.
694 * Return 0 if successful.
695 * @kernel_create_files_as:
696 * Set the file creation context in a set of credentials to be the same as
697 * the objective context of the specified inode.
698 * @new points to the credentials to be modified.
699 * @inode points to the inode to use as a reference.
700 * The current task must be the one that nominated @inode.
701 * Return 0 if successful.
702 * @kernel_module_request:
703 * Ability to trigger the kernel to automatically upcall to userspace for
704 * userspace to load a kernel module with the given name.
705 * @kmod_name name of the module requested by the kernel
706 * Return 0 if successful.
707 * @kernel_module_from_file:
708 * Load a kernel module from userspace.
709 * @file contains the file structure pointing to the file containing
710 * the kernel module to load. If the module is being loaded from a blob,
711 * this argument will be NULL.
712 * Return 0 if permission is granted.
714 * Update the module's state after setting one or more of the user
715 * identity attributes of the current process. The @flags parameter
716 * indicates which of the set*uid system calls invoked this hook. If
717 * @new is the set of credentials that will be installed. Modifications
718 * should be made to this rather than to @current->cred.
719 * @old is the set of credentials that are being replaces
720 * @flags contains one of the LSM_SETID_* values.
721 * Return 0 on success.
723 * Check permission before setting the process group identifier of the
724 * process @p to @pgid.
725 * @p contains the task_struct for process being modified.
726 * @pgid contains the new pgid.
727 * Return 0 if permission is granted.
729 * Check permission before getting the process group identifier of the
731 * @p contains the task_struct for the process.
732 * Return 0 if permission is granted.
734 * Check permission before getting the session identifier of the process
736 * @p contains the task_struct for the process.
737 * Return 0 if permission is granted.
739 * Retrieve the security identifier of the process @p.
740 * @p contains the task_struct for the process and place is into @secid.
741 * In case of failure, @secid will be set to zero.
744 * Check permission before setting the nice value of @p to @nice.
745 * @p contains the task_struct of process.
746 * @nice contains the new nice value.
747 * Return 0 if permission is granted.
749 * Check permission before setting the ioprio value of @p to @ioprio.
750 * @p contains the task_struct of process.
751 * @ioprio contains the new ioprio value
752 * Return 0 if permission is granted.
754 * Check permission before getting the ioprio value of @p.
755 * @p contains the task_struct of process.
756 * Return 0 if permission is granted.
758 * Check permission before setting the resource limits of the current
759 * process for @resource to @new_rlim. The old resource limit values can
760 * be examined by dereferencing (current->signal->rlim + resource).
761 * @resource contains the resource whose limit is being set.
762 * @new_rlim contains the new limits for @resource.
763 * Return 0 if permission is granted.
764 * @task_setscheduler:
765 * Check permission before setting scheduling policy and/or parameters of
766 * process @p based on @policy and @lp.
767 * @p contains the task_struct for process.
768 * @policy contains the scheduling policy.
769 * @lp contains the scheduling parameters.
770 * Return 0 if permission is granted.
771 * @task_getscheduler:
772 * Check permission before obtaining scheduling information for process
774 * @p contains the task_struct for process.
775 * Return 0 if permission is granted.
777 * Check permission before moving memory owned by process @p.
778 * @p contains the task_struct for process.
779 * Return 0 if permission is granted.
781 * Check permission before sending signal @sig to @p. @info can be NULL,
782 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
783 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
784 * from the kernel and should typically be permitted.
785 * SIGIO signals are handled separately by the send_sigiotask hook in
787 * @p contains the task_struct for process.
788 * @info contains the signal information.
789 * @sig contains the signal value.
790 * @secid contains the sid of the process where the signal originated
791 * Return 0 if permission is granted.
793 * Check permission before allowing a process to reap a child process @p
794 * and collect its status information.
795 * @p contains the task_struct for process.
796 * Return 0 if permission is granted.
798 * Check permission before performing a process control operation on the
800 * @option contains the operation.
801 * @arg2 contains a argument.
802 * @arg3 contains a argument.
803 * @arg4 contains a argument.
804 * @arg5 contains a argument.
805 * Return -ENOSYS if no-one wanted to handle this op, any other value to
806 * cause prctl() to return immediately with that value.
808 * Set the security attributes for an inode based on an associated task's
809 * security attributes, e.g. for /proc/pid inodes.
810 * @p contains the task_struct for the task.
811 * @inode contains the inode structure for the inode.
813 * Security hooks for Netlink messaging.
816 * Save security information for a netlink message so that permission
817 * checking can be performed when the message is processed. The security
818 * information can be saved using the eff_cap field of the
819 * netlink_skb_parms structure. Also may be used to provide fine
820 * grained control over message transmission.
821 * @sk associated sock of task sending the message.
822 * @skb contains the sk_buff structure for the netlink message.
823 * Return 0 if the information was successfully saved and message
824 * is allowed to be transmitted.
826 * Security hooks for Unix domain networking.
828 * @unix_stream_connect:
829 * Check permissions before establishing a Unix domain stream connection
830 * between @sock and @other.
831 * @sock contains the sock structure.
832 * @other contains the peer sock structure.
833 * @newsk contains the new sock structure.
834 * Return 0 if permission is granted.
836 * Check permissions before connecting or sending datagrams from @sock to
838 * @sock contains the socket structure.
839 * @other contains the peer socket structure.
840 * Return 0 if permission is granted.
842 * The @unix_stream_connect and @unix_may_send hooks were necessary because
843 * Linux provides an alternative to the conventional file name space for Unix
844 * domain sockets. Whereas binding and connecting to sockets in the file name
845 * space is mediated by the typical file permissions (and caught by the mknod
846 * and permission hooks in inode_security_ops), binding and connecting to
847 * sockets in the abstract name space is completely unmediated. Sufficient
848 * control of Unix domain sockets in the abstract name space isn't possible
849 * using only the socket layer hooks, since we need to know the actual target
850 * socket, which is not looked up until we are inside the af_unix code.
852 * Security hooks for socket operations.
855 * Check permissions prior to creating a new socket.
856 * @family contains the requested protocol family.
857 * @type contains the requested communications type.
858 * @protocol contains the requested protocol.
859 * @kern set to 1 if a kernel socket.
860 * Return 0 if permission is granted.
861 * @socket_post_create:
862 * This hook allows a module to update or allocate a per-socket security
863 * structure. Note that the security field was not added directly to the
864 * socket structure, but rather, the socket security information is stored
865 * in the associated inode. Typically, the inode alloc_security hook will
866 * allocate and and attach security information to
867 * sock->inode->i_security. This hook may be used to update the
868 * sock->inode->i_security field with additional information that wasn't
869 * available when the inode was allocated.
870 * @sock contains the newly created socket structure.
871 * @family contains the requested protocol family.
872 * @type contains the requested communications type.
873 * @protocol contains the requested protocol.
874 * @kern set to 1 if a kernel socket.
876 * Check permission before socket protocol layer bind operation is
877 * performed and the socket @sock is bound to the address specified in the
878 * @address parameter.
879 * @sock contains the socket structure.
880 * @address contains the address to bind to.
881 * @addrlen contains the length of address.
882 * Return 0 if permission is granted.
884 * Check permission before socket protocol layer connect operation
885 * attempts to connect socket @sock to a remote address, @address.
886 * @sock contains the socket structure.
887 * @address contains the address of remote endpoint.
888 * @addrlen contains the length of address.
889 * Return 0 if permission is granted.
891 * Check permission before socket protocol layer listen operation.
892 * @sock contains the socket structure.
893 * @backlog contains the maximum length for the pending connection queue.
894 * Return 0 if permission is granted.
896 * Check permission before accepting a new connection. Note that the new
897 * socket, @newsock, has been created and some information copied to it,
898 * but the accept operation has not actually been performed.
899 * @sock contains the listening socket structure.
900 * @newsock contains the newly created server socket for connection.
901 * Return 0 if permission is granted.
903 * Check permission before transmitting a message to another socket.
904 * @sock contains the socket structure.
905 * @msg contains the message to be transmitted.
906 * @size contains the size of message.
907 * Return 0 if permission is granted.
909 * Check permission before receiving a message from a socket.
910 * @sock contains the socket structure.
911 * @msg contains the message structure.
912 * @size contains the size of message structure.
913 * @flags contains the operational flags.
914 * Return 0 if permission is granted.
915 * @socket_getsockname:
916 * Check permission before the local address (name) of the socket object
917 * @sock is retrieved.
918 * @sock contains the socket structure.
919 * Return 0 if permission is granted.
920 * @socket_getpeername:
921 * Check permission before the remote address (name) of a socket object
922 * @sock is retrieved.
923 * @sock contains the socket structure.
924 * Return 0 if permission is granted.
925 * @socket_getsockopt:
926 * Check permissions before retrieving the options associated with socket
928 * @sock contains the socket structure.
929 * @level contains the protocol level to retrieve option from.
930 * @optname contains the name of option to retrieve.
931 * Return 0 if permission is granted.
932 * @socket_setsockopt:
933 * Check permissions before setting the options associated with socket
935 * @sock contains the socket structure.
936 * @level contains the protocol level to set options for.
937 * @optname contains the name of the option to set.
938 * Return 0 if permission is granted.
940 * Checks permission before all or part of a connection on the socket
941 * @sock is shut down.
942 * @sock contains the socket structure.
943 * @how contains the flag indicating how future sends and receives are handled.
944 * Return 0 if permission is granted.
945 * @socket_sock_rcv_skb:
946 * Check permissions on incoming network packets. This hook is distinct
947 * from Netfilter's IP input hooks since it is the first time that the
948 * incoming sk_buff @skb has been associated with a particular socket, @sk.
949 * Must not sleep inside this hook because some callers hold spinlocks.
950 * @sk contains the sock (not socket) associated with the incoming sk_buff.
951 * @skb contains the incoming network data.
952 * @socket_getpeersec_stream:
953 * This hook allows the security module to provide peer socket security
954 * state for unix or connected tcp sockets to userspace via getsockopt
955 * SO_GETPEERSEC. For tcp sockets this can be meaningful if the
956 * socket is associated with an ipsec SA.
957 * @sock is the local socket.
958 * @optval userspace memory where the security state is to be copied.
959 * @optlen userspace int where the module should copy the actual length
960 * of the security state.
961 * @len as input is the maximum length to copy to userspace provided
963 * Return 0 if all is well, otherwise, typical getsockopt return
965 * @socket_getpeersec_dgram:
966 * This hook allows the security module to provide peer socket security
967 * state for udp sockets on a per-packet basis to userspace via
968 * getsockopt SO_GETPEERSEC. The application must first have indicated
969 * the IP_PASSSEC option via getsockopt. It can then retrieve the
970 * security state returned by this hook for a packet via the SCM_SECURITY
971 * ancillary message type.
972 * @skb is the skbuff for the packet being queried
973 * @secdata is a pointer to a buffer in which to copy the security data
974 * @seclen is the maximum length for @secdata
975 * Return 0 on success, error on failure.
976 * @sk_alloc_security:
977 * Allocate and attach a security structure to the sk->sk_security field,
978 * which is used to copy security attributes between local stream sockets.
980 * Deallocate security structure.
981 * @sk_clone_security:
982 * Clone/copy security structure.
984 * Retrieve the LSM-specific secid for the sock to enable caching of network
987 * Sets the socket's isec sid to the sock's sid.
988 * @inet_conn_request:
989 * Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
991 * Sets the new child socket's sid to the openreq sid.
992 * @inet_conn_established:
993 * Sets the connection's peersid to the secmark on skb.
994 * @secmark_relabel_packet:
995 * check if the process should be allowed to relabel packets to the given secid
996 * @security_secmark_refcount_inc
997 * tells the LSM to increment the number of secmark labeling rules loaded
998 * @security_secmark_refcount_dec
999 * tells the LSM to decrement the number of secmark labeling rules loaded
1000 * @req_classify_flow:
1001 * Sets the flow's sid to the openreq sid.
1002 * @tun_dev_alloc_security:
1003 * This hook allows a module to allocate a security structure for a TUN
1005 * @security pointer to a security structure pointer.
1006 * Returns a zero on success, negative values on failure.
1007 * @tun_dev_free_security:
1008 * This hook allows a module to free the security structure for a TUN
1010 * @security pointer to the TUN device's security structure
1012 * Check permissions prior to creating a new TUN device.
1013 * @tun_dev_attach_queue:
1014 * Check permissions prior to attaching to a TUN device queue.
1015 * @security pointer to the TUN device's security structure.
1017 * This hook can be used by the module to update any security state
1018 * associated with the TUN device's sock structure.
1019 * @sk contains the existing sock structure.
1020 * @security pointer to the TUN device's security structure.
1022 * This hook can be used by the module to update any security state
1023 * associated with the TUN device's security structure.
1024 * @security pointer to the TUN devices's security structure.
1026 * This hook sets the packet's owning sock.
1027 * @skb is the packet.
1028 * @sk the sock which owns the packet.
1030 * Security hooks for XFRM operations.
1032 * @xfrm_policy_alloc_security:
1033 * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
1034 * Database used by the XFRM system.
1035 * @sec_ctx contains the security context information being provided by
1036 * the user-level policy update program (e.g., setkey).
1037 * Allocate a security structure to the xp->security field; the security
1038 * field is initialized to NULL when the xfrm_policy is allocated.
1039 * Return 0 if operation was successful (memory to allocate, legal context)
1040 * @xfrm_policy_clone_security:
1041 * @old_ctx contains an existing xfrm_sec_ctx.
1042 * @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
1043 * Allocate a security structure in new_ctxp that contains the
1044 * information from the old_ctx structure.
1045 * Return 0 if operation was successful (memory to allocate).
1046 * @xfrm_policy_free_security:
1047 * @ctx contains the xfrm_sec_ctx
1048 * Deallocate xp->security.
1049 * @xfrm_policy_delete_security:
1050 * @ctx contains the xfrm_sec_ctx.
1051 * Authorize deletion of xp->security.
1052 * @xfrm_state_alloc_security:
1053 * @x contains the xfrm_state being added to the Security Association
1054 * Database by the XFRM system.
1055 * @sec_ctx contains the security context information being provided by
1056 * the user-level SA generation program (e.g., setkey or racoon).
1057 * @secid contains the secid from which to take the mls portion of the context.
1058 * Allocate a security structure to the x->security field; the security
1059 * field is initialized to NULL when the xfrm_state is allocated. Set the
1060 * context to correspond to either sec_ctx or polsec, with the mls portion
1061 * taken from secid in the latter case.
1062 * Return 0 if operation was successful (memory to allocate, legal context).
1063 * @xfrm_state_free_security:
1064 * @x contains the xfrm_state.
1065 * Deallocate x->security.
1066 * @xfrm_state_delete_security:
1067 * @x contains the xfrm_state.
1068 * Authorize deletion of x->security.
1069 * @xfrm_policy_lookup:
1070 * @ctx contains the xfrm_sec_ctx for which the access control is being
1072 * @fl_secid contains the flow security label that is used to authorize
1073 * access to the policy xp.
1074 * @dir contains the direction of the flow (input or output).
1075 * Check permission when a flow selects a xfrm_policy for processing
1076 * XFRMs on a packet. The hook is called when selecting either a
1077 * per-socket policy or a generic xfrm policy.
1078 * Return 0 if permission is granted, -ESRCH otherwise, or -errno
1080 * @xfrm_state_pol_flow_match:
1081 * @x contains the state to match.
1082 * @xp contains the policy to check for a match.
1083 * @fl contains the flow to check for a match.
1084 * Return 1 if there is a match.
1085 * @xfrm_decode_session:
1086 * @skb points to skb to decode.
1087 * @secid points to the flow key secid to set.
1088 * @ckall says if all xfrms used should be checked for same secid.
1089 * Return 0 if ckall is zero or all xfrms used have the same secid.
1091 * Security hooks affecting all Key Management operations
1094 * Permit allocation of a key and assign security data. Note that key does
1095 * not have a serial number assigned at this point.
1096 * @key points to the key.
1097 * @flags is the allocation flags
1098 * Return 0 if permission is granted, -ve error otherwise.
1100 * Notification of destruction; free security data.
1101 * @key points to the key.
1104 * See whether a specific operational right is granted to a process on a
1106 * @key_ref refers to the key (key pointer + possession attribute bit).
1107 * @cred points to the credentials to provide the context against which to
1108 * evaluate the security data on the key.
1109 * @perm describes the combination of permissions required of this key.
1110 * Return 0 if permission is granted, -ve error otherwise.
1112 * Get a textual representation of the security context attached to a key
1113 * for the purposes of honouring KEYCTL_GETSECURITY. This function
1114 * allocates the storage for the NUL-terminated string and the caller
1116 * @key points to the key to be queried.
1117 * @_buffer points to a pointer that should be set to point to the
1118 * resulting string (if no label or an error occurs).
1119 * Return the length of the string (including terminating NUL) or -ve if
1121 * May also return 0 (and a NULL buffer pointer) if there is no label.
1123 * Security hooks affecting all System V IPC operations.
1126 * Check permissions for access to IPC
1127 * @ipcp contains the kernel IPC permission structure
1128 * @flag contains the desired (requested) permission set
1129 * Return 0 if permission is granted.
1131 * Get the secid associated with the ipc object.
1132 * @ipcp contains the kernel IPC permission structure.
1133 * @secid contains a pointer to the location where result will be saved.
1134 * In case of failure, @secid will be set to zero.
1136 * Security hooks for individual messages held in System V IPC message queues
1137 * @msg_msg_alloc_security:
1138 * Allocate and attach a security structure to the msg->security field.
1139 * The security field is initialized to NULL when the structure is first
1141 * @msg contains the message structure to be modified.
1142 * Return 0 if operation was successful and permission is granted.
1143 * @msg_msg_free_security:
1144 * Deallocate the security structure for this message.
1145 * @msg contains the message structure to be modified.
1147 * Security hooks for System V IPC Message Queues
1149 * @msg_queue_alloc_security:
1150 * Allocate and attach a security structure to the
1151 * msq->q_perm.security field. The security field is initialized to
1152 * NULL when the structure is first created.
1153 * @msq contains the message queue structure to be modified.
1154 * Return 0 if operation was successful and permission is granted.
1155 * @msg_queue_free_security:
1156 * Deallocate security structure for this message queue.
1157 * @msq contains the message queue structure to be modified.
1158 * @msg_queue_associate:
1159 * Check permission when a message queue is requested through the
1160 * msgget system call. This hook is only called when returning the
1161 * message queue identifier for an existing message queue, not when a
1162 * new message queue is created.
1163 * @msq contains the message queue to act upon.
1164 * @msqflg contains the operation control flags.
1165 * Return 0 if permission is granted.
1166 * @msg_queue_msgctl:
1167 * Check permission when a message control operation specified by @cmd
1168 * is to be performed on the message queue @msq.
1169 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
1170 * @msq contains the message queue to act upon. May be NULL.
1171 * @cmd contains the operation to be performed.
1172 * Return 0 if permission is granted.
1173 * @msg_queue_msgsnd:
1174 * Check permission before a message, @msg, is enqueued on the message
1176 * @msq contains the message queue to send message to.
1177 * @msg contains the message to be enqueued.
1178 * @msqflg contains operational flags.
1179 * Return 0 if permission is granted.
1180 * @msg_queue_msgrcv:
1181 * Check permission before a message, @msg, is removed from the message
1182 * queue, @msq. The @target task structure contains a pointer to the
1183 * process that will be receiving the message (not equal to the current
1184 * process when inline receives are being performed).
1185 * @msq contains the message queue to retrieve message from.
1186 * @msg contains the message destination.
1187 * @target contains the task structure for recipient process.
1188 * @type contains the type of message requested.
1189 * @mode contains the operational flags.
1190 * Return 0 if permission is granted.
1192 * Security hooks for System V Shared Memory Segments
1194 * @shm_alloc_security:
1195 * Allocate and attach a security structure to the shp->shm_perm.security
1196 * field. The security field is initialized to NULL when the structure is
1198 * @shp contains the shared memory structure to be modified.
1199 * Return 0 if operation was successful and permission is granted.
1200 * @shm_free_security:
1201 * Deallocate the security struct for this memory segment.
1202 * @shp contains the shared memory structure to be modified.
1204 * Check permission when a shared memory region is requested through the
1205 * shmget system call. This hook is only called when returning the shared
1206 * memory region identifier for an existing region, not when a new shared
1207 * memory region is created.
1208 * @shp contains the shared memory structure to be modified.
1209 * @shmflg contains the operation control flags.
1210 * Return 0 if permission is granted.
1212 * Check permission when a shared memory control operation specified by
1213 * @cmd is to be performed on the shared memory region @shp.
1214 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1215 * @shp contains shared memory structure to be modified.
1216 * @cmd contains the operation to be performed.
1217 * Return 0 if permission is granted.
1219 * Check permissions prior to allowing the shmat system call to attach the
1220 * shared memory segment @shp to the data segment of the calling process.
1221 * The attaching address is specified by @shmaddr.
1222 * @shp contains the shared memory structure to be modified.
1223 * @shmaddr contains the address to attach memory region to.
1224 * @shmflg contains the operational flags.
1225 * Return 0 if permission is granted.
1227 * Security hooks for System V Semaphores
1229 * @sem_alloc_security:
1230 * Allocate and attach a security structure to the sma->sem_perm.security
1231 * field. The security field is initialized to NULL when the structure is
1233 * @sma contains the semaphore structure
1234 * Return 0 if operation was successful and permission is granted.
1235 * @sem_free_security:
1236 * deallocate security struct for this semaphore
1237 * @sma contains the semaphore structure.
1239 * Check permission when a semaphore is requested through the semget
1240 * system call. This hook is only called when returning the semaphore
1241 * identifier for an existing semaphore, not when a new one must be
1243 * @sma contains the semaphore structure.
1244 * @semflg contains the operation control flags.
1245 * Return 0 if permission is granted.
1247 * Check permission when a semaphore operation specified by @cmd is to be
1248 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
1249 * IPC_INFO or SEM_INFO.
1250 * @sma contains the semaphore structure. May be NULL.
1251 * @cmd contains the operation to be performed.
1252 * Return 0 if permission is granted.
1254 * Check permissions before performing operations on members of the
1255 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1257 * @sma contains the semaphore structure.
1258 * @sops contains the operations to perform.
1259 * @nsops contains the number of operations to perform.
1260 * @alter contains the flag indicating whether changes are to be made.
1261 * Return 0 if permission is granted.
1263 * @ptrace_access_check:
1264 * Check permission before allowing the current process to trace the
1266 * Security modules may also want to perform a process tracing check
1267 * during an execve in the set_security or apply_creds hooks of
1268 * tracing check during an execve in the bprm_set_creds hook of
1269 * binprm_security_ops if the process is being traced and its security
1270 * attributes would be changed by the execve.
1271 * @child contains the task_struct structure for the target process.
1272 * @mode contains the PTRACE_MODE flags indicating the form of access.
1273 * Return 0 if permission is granted.
1275 * Check that the @parent process has sufficient permission to trace the
1276 * current process before allowing the current process to present itself
1277 * to the @parent process for tracing.
1278 * @parent contains the task_struct structure for debugger process.
1279 * Return 0 if permission is granted.
1281 * Get the @effective, @inheritable, and @permitted capability sets for
1282 * the @target process. The hook may also perform permission checking to
1283 * determine if the current process is allowed to see the capability sets
1284 * of the @target process.
1285 * @target contains the task_struct structure for target process.
1286 * @effective contains the effective capability set.
1287 * @inheritable contains the inheritable capability set.
1288 * @permitted contains the permitted capability set.
1289 * Return 0 if the capability sets were successfully obtained.
1291 * Set the @effective, @inheritable, and @permitted capability sets for
1292 * the current process.
1293 * @new contains the new credentials structure for target process.
1294 * @old contains the current credentials structure for target process.
1295 * @effective contains the effective capability set.
1296 * @inheritable contains the inheritable capability set.
1297 * @permitted contains the permitted capability set.
1298 * Return 0 and update @new if permission is granted.
1300 * Check whether the @tsk process has the @cap capability in the indicated
1302 * @cred contains the credentials to use.
1303 * @ns contains the user namespace we want the capability in
1304 * @cap contains the capability <include/linux/capability.h>.
1305 * @audit: Whether to write an audit message or not
1306 * Return 0 if the capability is granted for @tsk.
1308 * Check permission before accessing the kernel message ring or changing
1309 * logging to the console.
1310 * See the syslog(2) manual page for an explanation of the @type values.
1311 * @type contains the type of action.
1312 * @from_file indicates the context of action (if it came from /proc).
1313 * Return 0 if permission is granted.
1315 * Check permission to change the system time.
1316 * struct timespec and timezone are defined in include/linux/time.h
1317 * @ts contains new time
1318 * @tz contains new timezone
1319 * Return 0 if permission is granted.
1320 * @vm_enough_memory:
1321 * Check permissions for allocating a new virtual mapping.
1322 * @mm contains the mm struct it is being added to.
1323 * @pages contains the number of pages.
1324 * Return 0 if permission is granted.
1327 * Check if the extended attribute specified by @name
1328 * represents a MAC label. Returns 1 if name is a MAC
1329 * attribute otherwise returns 0.
1330 * @name full extended attribute name to check against
1331 * LSM as a MAC label.
1334 * Convert secid to security context. If secdata is NULL the length of
1335 * the result will be returned in seclen, but no secdata will be returned.
1336 * This does mean that the length could change between calls to check the
1337 * length and the next call which actually allocates and returns the secdata.
1338 * @secid contains the security ID.
1339 * @secdata contains the pointer that stores the converted security context.
1340 * @seclen pointer which contains the length of the data
1342 * Convert security context to secid.
1343 * @secid contains the pointer to the generated security ID.
1344 * @secdata contains the security context.
1347 * Release the security context.
1348 * @secdata contains the security context.
1349 * @seclen contains the length of the security context.
1351 * Security hooks for Audit
1354 * Allocate and initialize an LSM audit rule structure.
1355 * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
1356 * @op contains the operator the rule uses.
1357 * @rulestr contains the context where the rule will be applied to.
1358 * @lsmrule contains a pointer to receive the result.
1359 * Return 0 if @lsmrule has been successfully set,
1360 * -EINVAL in case of an invalid rule.
1362 * @audit_rule_known:
1363 * Specifies whether given @rule contains any fields related to current LSM.
1364 * @rule contains the audit rule of interest.
1365 * Return 1 in case of relation found, 0 otherwise.
1367 * @audit_rule_match:
1368 * Determine if given @secid matches a rule previously approved
1369 * by @audit_rule_known.
1370 * @secid contains the security id in question.
1371 * @field contains the field which relates to current LSM.
1372 * @op contains the operator that will be used for matching.
1373 * @rule points to the audit rule that will be checked against.
1374 * @actx points to the audit context associated with the check.
1375 * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
1378 * Deallocate the LSM audit rule structure previously allocated by
1380 * @rule contains the allocated rule
1382 * @inode_notifysecctx:
1383 * Notify the security module of what the security context of an inode
1384 * should be. Initializes the incore security context managed by the
1385 * security module for this inode. Example usage: NFS client invokes
1386 * this hook to initialize the security context in its incore inode to the
1387 * value provided by the server for the file when the server returned the
1388 * file's attributes to the client.
1390 * Must be called with inode->i_mutex locked.
1392 * @inode we wish to set the security context of.
1393 * @ctx contains the string which we wish to set in the inode.
1394 * @ctxlen contains the length of @ctx.
1397 * Change the security context of an inode. Updates the
1398 * incore security context managed by the security module and invokes the
1399 * fs code as needed (via __vfs_setxattr_noperm) to update any backing
1400 * xattrs that represent the context. Example usage: NFS server invokes
1401 * this hook to change the security context in its incore inode and on the
1402 * backing filesystem to a value provided by the client on a SETATTR
1405 * Must be called with inode->i_mutex locked.
1407 * @dentry contains the inode we wish to set the security context of.
1408 * @ctx contains the string which we wish to set in the inode.
1409 * @ctxlen contains the length of @ctx.
1412 * Returns a string containing all relevant security context information
1414 * @inode we wish to get the security context of.
1415 * @ctx is a pointer in which to place the allocated security context.
1416 * @ctxlen points to the place to put the length of @ctx.
1417 * This is the main security structure.
1419 struct security_operations {
1420 char name[SECURITY_NAME_MAX + 1];
1422 int (*ptrace_access_check) (struct task_struct *child, unsigned int mode);
1423 int (*ptrace_traceme) (struct task_struct *parent);
1424 int (*capget) (struct task_struct *target,
1425 kernel_cap_t *effective,
1426 kernel_cap_t *inheritable, kernel_cap_t *permitted);
1427 int (*capset) (struct cred *new,
1428 const struct cred *old,
1429 const kernel_cap_t *effective,
1430 const kernel_cap_t *inheritable,
1431 const kernel_cap_t *permitted);
1432 int (*capable) (const struct cred *cred, struct user_namespace *ns,
1433 int cap, int audit);
1434 int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
1435 int (*quota_on) (struct dentry *dentry);
1436 int (*syslog) (int type);
1437 int (*settime) (const struct timespec *ts, const struct timezone *tz);
1438 int (*vm_enough_memory) (struct mm_struct *mm, long pages);
1440 int (*bprm_set_creds) (struct linux_binprm *bprm);
1441 int (*bprm_check_security) (struct linux_binprm *bprm);
1442 int (*bprm_secureexec) (struct linux_binprm *bprm);
1443 void (*bprm_committing_creds) (struct linux_binprm *bprm);
1444 void (*bprm_committed_creds) (struct linux_binprm *bprm);
1446 int (*sb_alloc_security) (struct super_block *sb);
1447 void (*sb_free_security) (struct super_block *sb);
1448 int (*sb_copy_data) (char *orig, char *copy);
1449 int (*sb_remount) (struct super_block *sb, void *data);
1450 int (*sb_kern_mount) (struct super_block *sb, int flags, void *data);
1451 int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
1452 int (*sb_statfs) (struct dentry *dentry);
1453 int (*sb_mount) (const char *dev_name, struct path *path,
1454 const char *type, unsigned long flags, void *data);
1455 int (*sb_umount) (struct vfsmount *mnt, int flags);
1456 int (*sb_pivotroot) (struct path *old_path,
1457 struct path *new_path);
1458 int (*sb_set_mnt_opts) (struct super_block *sb,
1459 struct security_mnt_opts *opts,
1460 unsigned long kern_flags,
1461 unsigned long *set_kern_flags);
1462 int (*sb_clone_mnt_opts) (const struct super_block *oldsb,
1463 struct super_block *newsb);
1464 int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
1465 int (*dentry_init_security) (struct dentry *dentry, int mode,
1466 struct qstr *name, void **ctx,
1470 #ifdef CONFIG_SECURITY_PATH
1471 int (*path_unlink) (struct path *dir, struct dentry *dentry);
1472 int (*path_mkdir) (struct path *dir, struct dentry *dentry, umode_t mode);
1473 int (*path_rmdir) (struct path *dir, struct dentry *dentry);
1474 int (*path_mknod) (struct path *dir, struct dentry *dentry, umode_t mode,
1476 int (*path_truncate) (struct path *path);
1477 int (*path_symlink) (struct path *dir, struct dentry *dentry,
1478 const char *old_name);
1479 int (*path_link) (struct dentry *old_dentry, struct path *new_dir,
1480 struct dentry *new_dentry);
1481 int (*path_rename) (struct path *old_dir, struct dentry *old_dentry,
1482 struct path *new_dir, struct dentry *new_dentry);
1483 int (*path_chmod) (struct path *path, umode_t mode);
1484 int (*path_chown) (struct path *path, kuid_t uid, kgid_t gid);
1485 int (*path_chroot) (struct path *path);
1488 int (*inode_alloc_security) (struct inode *inode);
1489 void (*inode_free_security) (struct inode *inode);
1490 int (*inode_init_security) (struct inode *inode, struct inode *dir,
1491 const struct qstr *qstr, char **name,
1492 void **value, size_t *len);
1493 int (*inode_create) (struct inode *dir,
1494 struct dentry *dentry, umode_t mode);
1495 int (*inode_link) (struct dentry *old_dentry,
1496 struct inode *dir, struct dentry *new_dentry);
1497 int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
1498 int (*inode_symlink) (struct inode *dir,
1499 struct dentry *dentry, const char *old_name);
1500 int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, umode_t mode);
1501 int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
1502 int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
1503 umode_t mode, dev_t dev);
1504 int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
1505 struct inode *new_dir, struct dentry *new_dentry);
1506 int (*inode_readlink) (struct dentry *dentry);
1507 int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
1508 int (*inode_permission) (struct inode *inode, int mask);
1509 int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
1510 int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
1511 int (*inode_setxattr) (struct dentry *dentry, const char *name,
1512 const void *value, size_t size, int flags);
1513 void (*inode_post_setxattr) (struct dentry *dentry, const char *name,
1514 const void *value, size_t size, int flags);
1515 int (*inode_getxattr) (struct dentry *dentry, const char *name);
1516 int (*inode_listxattr) (struct dentry *dentry);
1517 int (*inode_removexattr) (struct dentry *dentry, const char *name);
1518 int (*inode_need_killpriv) (struct dentry *dentry);
1519 int (*inode_killpriv) (struct dentry *dentry);
1520 int (*inode_getsecurity) (const struct inode *inode, const char *name, void **buffer, bool alloc);
1521 int (*inode_setsecurity) (struct inode *inode, const char *name, const void *value, size_t size, int flags);
1522 int (*inode_listsecurity) (struct inode *inode, char *buffer, size_t buffer_size);
1523 void (*inode_getsecid) (const struct inode *inode, u32 *secid);
1525 int (*file_permission) (struct file *file, int mask);
1526 int (*file_alloc_security) (struct file *file);
1527 void (*file_free_security) (struct file *file);
1528 int (*file_ioctl) (struct file *file, unsigned int cmd,
1530 int (*mmap_addr) (unsigned long addr);
1531 int (*mmap_file) (struct file *file,
1532 unsigned long reqprot, unsigned long prot,
1533 unsigned long flags);
1534 int (*file_mprotect) (struct vm_area_struct *vma,
1535 unsigned long reqprot,
1536 unsigned long prot);
1537 int (*file_lock) (struct file *file, unsigned int cmd);
1538 int (*file_fcntl) (struct file *file, unsigned int cmd,
1540 int (*file_set_fowner) (struct file *file);
1541 int (*file_send_sigiotask) (struct task_struct *tsk,
1542 struct fown_struct *fown, int sig);
1543 int (*file_receive) (struct file *file);
1544 int (*file_open) (struct file *file, const struct cred *cred);
1546 int (*task_create) (unsigned long clone_flags);
1547 void (*task_free) (struct task_struct *task);
1548 int (*cred_alloc_blank) (struct cred *cred, gfp_t gfp);
1549 void (*cred_free) (struct cred *cred);
1550 int (*cred_prepare)(struct cred *new, const struct cred *old,
1552 void (*cred_transfer)(struct cred *new, const struct cred *old);
1553 int (*kernel_act_as)(struct cred *new, u32 secid);
1554 int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
1555 int (*kernel_module_request)(char *kmod_name);
1556 int (*kernel_module_from_file)(struct file *file);
1557 int (*task_fix_setuid) (struct cred *new, const struct cred *old,
1559 int (*task_setpgid) (struct task_struct *p, pid_t pgid);
1560 int (*task_getpgid) (struct task_struct *p);
1561 int (*task_getsid) (struct task_struct *p);
1562 void (*task_getsecid) (struct task_struct *p, u32 *secid);
1563 int (*task_setnice) (struct task_struct *p, int nice);
1564 int (*task_setioprio) (struct task_struct *p, int ioprio);
1565 int (*task_getioprio) (struct task_struct *p);
1566 int (*task_setrlimit) (struct task_struct *p, unsigned int resource,
1567 struct rlimit *new_rlim);
1568 int (*task_setscheduler) (struct task_struct *p);
1569 int (*task_getscheduler) (struct task_struct *p);
1570 int (*task_movememory) (struct task_struct *p);
1571 int (*task_kill) (struct task_struct *p,
1572 struct siginfo *info, int sig, u32 secid);
1573 int (*task_wait) (struct task_struct *p);
1574 int (*task_prctl) (int option, unsigned long arg2,
1575 unsigned long arg3, unsigned long arg4,
1576 unsigned long arg5);
1577 void (*task_to_inode) (struct task_struct *p, struct inode *inode);
1579 int (*ipc_permission) (struct kern_ipc_perm *ipcp, short flag);
1580 void (*ipc_getsecid) (struct kern_ipc_perm *ipcp, u32 *secid);
1582 int (*msg_msg_alloc_security) (struct msg_msg *msg);
1583 void (*msg_msg_free_security) (struct msg_msg *msg);
1585 int (*msg_queue_alloc_security) (struct msg_queue *msq);
1586 void (*msg_queue_free_security) (struct msg_queue *msq);
1587 int (*msg_queue_associate) (struct msg_queue *msq, int msqflg);
1588 int (*msg_queue_msgctl) (struct msg_queue *msq, int cmd);
1589 int (*msg_queue_msgsnd) (struct msg_queue *msq,
1590 struct msg_msg *msg, int msqflg);
1591 int (*msg_queue_msgrcv) (struct msg_queue *msq,
1592 struct msg_msg *msg,
1593 struct task_struct *target,
1594 long type, int mode);
1596 int (*shm_alloc_security) (struct shmid_kernel *shp);
1597 void (*shm_free_security) (struct shmid_kernel *shp);
1598 int (*shm_associate) (struct shmid_kernel *shp, int shmflg);
1599 int (*shm_shmctl) (struct shmid_kernel *shp, int cmd);
1600 int (*shm_shmat) (struct shmid_kernel *shp,
1601 char __user *shmaddr, int shmflg);
1603 int (*sem_alloc_security) (struct sem_array *sma);
1604 void (*sem_free_security) (struct sem_array *sma);
1605 int (*sem_associate) (struct sem_array *sma, int semflg);
1606 int (*sem_semctl) (struct sem_array *sma, int cmd);
1607 int (*sem_semop) (struct sem_array *sma,
1608 struct sembuf *sops, unsigned nsops, int alter);
1610 int (*netlink_send) (struct sock *sk, struct sk_buff *skb);
1612 void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1614 int (*getprocattr) (struct task_struct *p, char *name, char **value);
1615 int (*setprocattr) (struct task_struct *p, char *name, void *value, size_t size);
1616 int (*ismaclabel) (const char *name);
1617 int (*secid_to_secctx) (u32 secid, char **secdata, u32 *seclen);
1618 int (*secctx_to_secid) (const char *secdata, u32 seclen, u32 *secid);
1619 void (*release_secctx) (char *secdata, u32 seclen);
1621 int (*inode_notifysecctx)(struct inode *inode, void *ctx, u32 ctxlen);
1622 int (*inode_setsecctx)(struct dentry *dentry, void *ctx, u32 ctxlen);
1623 int (*inode_getsecctx)(struct inode *inode, void **ctx, u32 *ctxlen);
1625 #ifdef CONFIG_SECURITY_NETWORK
1626 int (*unix_stream_connect) (struct sock *sock, struct sock *other, struct sock *newsk);
1627 int (*unix_may_send) (struct socket *sock, struct socket *other);
1629 int (*socket_create) (int family, int type, int protocol, int kern);
1630 int (*socket_post_create) (struct socket *sock, int family,
1631 int type, int protocol, int kern);
1632 int (*socket_bind) (struct socket *sock,
1633 struct sockaddr *address, int addrlen);
1634 int (*socket_connect) (struct socket *sock,
1635 struct sockaddr *address, int addrlen);
1636 int (*socket_listen) (struct socket *sock, int backlog);
1637 int (*socket_accept) (struct socket *sock, struct socket *newsock);
1638 int (*socket_sendmsg) (struct socket *sock,
1639 struct msghdr *msg, int size);
1640 int (*socket_recvmsg) (struct socket *sock,
1641 struct msghdr *msg, int size, int flags);
1642 int (*socket_getsockname) (struct socket *sock);
1643 int (*socket_getpeername) (struct socket *sock);
1644 int (*socket_getsockopt) (struct socket *sock, int level, int optname);
1645 int (*socket_setsockopt) (struct socket *sock, int level, int optname);
1646 int (*socket_shutdown) (struct socket *sock, int how);
1647 int (*socket_sock_rcv_skb) (struct sock *sk, struct sk_buff *skb);
1648 int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
1649 int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
1650 int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
1651 void (*sk_free_security) (struct sock *sk);
1652 void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
1653 void (*sk_getsecid) (struct sock *sk, u32 *secid);
1654 void (*sock_graft) (struct sock *sk, struct socket *parent);
1655 int (*inet_conn_request) (struct sock *sk, struct sk_buff *skb,
1656 struct request_sock *req);
1657 void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req);
1658 void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb);
1659 int (*secmark_relabel_packet) (u32 secid);
1660 void (*secmark_refcount_inc) (void);
1661 void (*secmark_refcount_dec) (void);
1662 void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
1663 int (*tun_dev_alloc_security) (void **security);
1664 void (*tun_dev_free_security) (void *security);
1665 int (*tun_dev_create) (void);
1666 int (*tun_dev_attach_queue) (void *security);
1667 int (*tun_dev_attach) (struct sock *sk, void *security);
1668 int (*tun_dev_open) (void *security);
1669 void (*skb_owned_by) (struct sk_buff *skb, struct sock *sk);
1670 #endif /* CONFIG_SECURITY_NETWORK */
1672 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1673 int (*xfrm_policy_alloc_security) (struct xfrm_sec_ctx **ctxp,
1674 struct xfrm_user_sec_ctx *sec_ctx);
1675 int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
1676 void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
1677 int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
1678 int (*xfrm_state_alloc_security) (struct xfrm_state *x,
1679 struct xfrm_user_sec_ctx *sec_ctx,
1681 void (*xfrm_state_free_security) (struct xfrm_state *x);
1682 int (*xfrm_state_delete_security) (struct xfrm_state *x);
1683 int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1684 int (*xfrm_state_pol_flow_match) (struct xfrm_state *x,
1685 struct xfrm_policy *xp,
1686 const struct flowi *fl);
1687 int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall);
1688 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1690 /* key management security hooks */
1692 int (*key_alloc) (struct key *key, const struct cred *cred, unsigned long flags);
1693 void (*key_free) (struct key *key);
1694 int (*key_permission) (key_ref_t key_ref,
1695 const struct cred *cred,
1697 int (*key_getsecurity)(struct key *key, char **_buffer);
1698 #endif /* CONFIG_KEYS */
1701 int (*audit_rule_init) (u32 field, u32 op, char *rulestr, void **lsmrule);
1702 int (*audit_rule_known) (struct audit_krule *krule);
1703 int (*audit_rule_match) (u32 secid, u32 field, u32 op, void *lsmrule,
1704 struct audit_context *actx);
1705 void (*audit_rule_free) (void *lsmrule);
1706 #endif /* CONFIG_AUDIT */
1710 extern int security_init(void);
1711 extern int security_module_enable(struct security_operations *ops);
1712 extern int register_security(struct security_operations *ops);
1713 extern void __init security_fixup_ops(struct security_operations *ops);
1716 /* Security operations */
1717 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
1718 int security_ptrace_traceme(struct task_struct *parent);
1719 int security_capget(struct task_struct *target,
1720 kernel_cap_t *effective,
1721 kernel_cap_t *inheritable,
1722 kernel_cap_t *permitted);
1723 int security_capset(struct cred *new, const struct cred *old,
1724 const kernel_cap_t *effective,
1725 const kernel_cap_t *inheritable,
1726 const kernel_cap_t *permitted);
1727 int security_capable(const struct cred *cred, struct user_namespace *ns,
1729 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
1731 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
1732 int security_quota_on(struct dentry *dentry);
1733 int security_syslog(int type);
1734 int security_settime(const struct timespec *ts, const struct timezone *tz);
1735 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
1736 int security_bprm_set_creds(struct linux_binprm *bprm);
1737 int security_bprm_check(struct linux_binprm *bprm);
1738 void security_bprm_committing_creds(struct linux_binprm *bprm);
1739 void security_bprm_committed_creds(struct linux_binprm *bprm);
1740 int security_bprm_secureexec(struct linux_binprm *bprm);
1741 int security_sb_alloc(struct super_block *sb);
1742 void security_sb_free(struct super_block *sb);
1743 int security_sb_copy_data(char *orig, char *copy);
1744 int security_sb_remount(struct super_block *sb, void *data);
1745 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
1746 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
1747 int security_sb_statfs(struct dentry *dentry);
1748 int security_sb_mount(const char *dev_name, struct path *path,
1749 const char *type, unsigned long flags, void *data);
1750 int security_sb_umount(struct vfsmount *mnt, int flags);
1751 int security_sb_pivotroot(struct path *old_path, struct path *new_path);
1752 int security_sb_set_mnt_opts(struct super_block *sb,
1753 struct security_mnt_opts *opts,
1754 unsigned long kern_flags,
1755 unsigned long *set_kern_flags);
1756 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
1757 struct super_block *newsb);
1758 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
1759 int security_dentry_init_security(struct dentry *dentry, int mode,
1760 struct qstr *name, void **ctx,
1763 int security_inode_alloc(struct inode *inode);
1764 void security_inode_free(struct inode *inode);
1765 int security_inode_init_security(struct inode *inode, struct inode *dir,
1766 const struct qstr *qstr,
1767 initxattrs initxattrs, void *fs_data);
1768 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
1769 const struct qstr *qstr, char **name,
1770 void **value, size_t *len);
1771 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
1772 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1773 struct dentry *new_dentry);
1774 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
1775 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
1776 const char *old_name);
1777 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
1778 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
1779 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
1780 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
1781 struct inode *new_dir, struct dentry *new_dentry);
1782 int security_inode_readlink(struct dentry *dentry);
1783 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
1784 int security_inode_permission(struct inode *inode, int mask);
1785 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
1786 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
1787 int security_inode_setxattr(struct dentry *dentry, const char *name,
1788 const void *value, size_t size, int flags);
1789 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1790 const void *value, size_t size, int flags);
1791 int security_inode_getxattr(struct dentry *dentry, const char *name);
1792 int security_inode_listxattr(struct dentry *dentry);
1793 int security_inode_removexattr(struct dentry *dentry, const char *name);
1794 int security_inode_need_killpriv(struct dentry *dentry);
1795 int security_inode_killpriv(struct dentry *dentry);
1796 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
1797 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1798 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
1799 void security_inode_getsecid(const struct inode *inode, u32 *secid);
1800 int security_file_permission(struct file *file, int mask);
1801 int security_file_alloc(struct file *file);
1802 void security_file_free(struct file *file);
1803 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
1804 int security_mmap_file(struct file *file, unsigned long prot,
1805 unsigned long flags);
1806 int security_mmap_addr(unsigned long addr);
1807 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1808 unsigned long prot);
1809 int security_file_lock(struct file *file, unsigned int cmd);
1810 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
1811 int security_file_set_fowner(struct file *file);
1812 int security_file_send_sigiotask(struct task_struct *tsk,
1813 struct fown_struct *fown, int sig);
1814 int security_file_receive(struct file *file);
1815 int security_file_open(struct file *file, const struct cred *cred);
1816 int security_task_create(unsigned long clone_flags);
1817 void security_task_free(struct task_struct *task);
1818 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
1819 void security_cred_free(struct cred *cred);
1820 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
1821 void security_transfer_creds(struct cred *new, const struct cred *old);
1822 int security_kernel_act_as(struct cred *new, u32 secid);
1823 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
1824 int security_kernel_module_request(char *kmod_name);
1825 int security_kernel_module_from_file(struct file *file);
1826 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1828 int security_task_setpgid(struct task_struct *p, pid_t pgid);
1829 int security_task_getpgid(struct task_struct *p);
1830 int security_task_getsid(struct task_struct *p);
1831 void security_task_getsecid(struct task_struct *p, u32 *secid);
1832 int security_task_setnice(struct task_struct *p, int nice);
1833 int security_task_setioprio(struct task_struct *p, int ioprio);
1834 int security_task_getioprio(struct task_struct *p);
1835 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
1836 struct rlimit *new_rlim);
1837 int security_task_setscheduler(struct task_struct *p);
1838 int security_task_getscheduler(struct task_struct *p);
1839 int security_task_movememory(struct task_struct *p);
1840 int security_task_kill(struct task_struct *p, struct siginfo *info,
1841 int sig, u32 secid);
1842 int security_task_wait(struct task_struct *p);
1843 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1844 unsigned long arg4, unsigned long arg5);
1845 void security_task_to_inode(struct task_struct *p, struct inode *inode);
1846 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
1847 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
1848 int security_msg_msg_alloc(struct msg_msg *msg);
1849 void security_msg_msg_free(struct msg_msg *msg);
1850 int security_msg_queue_alloc(struct msg_queue *msq);
1851 void security_msg_queue_free(struct msg_queue *msq);
1852 int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
1853 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
1854 int security_msg_queue_msgsnd(struct msg_queue *msq,
1855 struct msg_msg *msg, int msqflg);
1856 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1857 struct task_struct *target, long type, int mode);
1858 int security_shm_alloc(struct shmid_kernel *shp);
1859 void security_shm_free(struct shmid_kernel *shp);
1860 int security_shm_associate(struct shmid_kernel *shp, int shmflg);
1861 int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
1862 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
1863 int security_sem_alloc(struct sem_array *sma);
1864 void security_sem_free(struct sem_array *sma);
1865 int security_sem_associate(struct sem_array *sma, int semflg);
1866 int security_sem_semctl(struct sem_array *sma, int cmd);
1867 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1868 unsigned nsops, int alter);
1869 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
1870 int security_getprocattr(struct task_struct *p, char *name, char **value);
1871 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
1872 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
1873 int security_ismaclabel(const char *name);
1874 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
1875 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
1876 void security_release_secctx(char *secdata, u32 seclen);
1878 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
1879 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
1880 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
1881 #else /* CONFIG_SECURITY */
1882 struct security_mnt_opts {
1885 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
1889 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
1894 * This is the default capabilities functionality. Most of these functions
1895 * are just stubbed out, but a few must call the proper capable code.
1898 static inline int security_init(void)
1903 static inline int security_ptrace_access_check(struct task_struct *child,
1906 return cap_ptrace_access_check(child, mode);
1909 static inline int security_ptrace_traceme(struct task_struct *parent)
1911 return cap_ptrace_traceme(parent);
1914 static inline int security_capget(struct task_struct *target,
1915 kernel_cap_t *effective,
1916 kernel_cap_t *inheritable,
1917 kernel_cap_t *permitted)
1919 return cap_capget(target, effective, inheritable, permitted);
1922 static inline int security_capset(struct cred *new,
1923 const struct cred *old,
1924 const kernel_cap_t *effective,
1925 const kernel_cap_t *inheritable,
1926 const kernel_cap_t *permitted)
1928 return cap_capset(new, old, effective, inheritable, permitted);
1931 static inline int security_capable(const struct cred *cred,
1932 struct user_namespace *ns, int cap)
1934 return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT);
1937 static inline int security_capable_noaudit(const struct cred *cred,
1938 struct user_namespace *ns, int cap) {
1939 return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
1942 static inline int security_quotactl(int cmds, int type, int id,
1943 struct super_block *sb)
1948 static inline int security_quota_on(struct dentry *dentry)
1953 static inline int security_syslog(int type)
1958 static inline int security_settime(const struct timespec *ts,
1959 const struct timezone *tz)
1961 return cap_settime(ts, tz);
1964 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
1966 return cap_vm_enough_memory(mm, pages);
1969 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
1971 return cap_bprm_set_creds(bprm);
1974 static inline int security_bprm_check(struct linux_binprm *bprm)
1979 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
1983 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
1987 static inline int security_bprm_secureexec(struct linux_binprm *bprm)
1989 return cap_bprm_secureexec(bprm);
1992 static inline int security_sb_alloc(struct super_block *sb)
1997 static inline void security_sb_free(struct super_block *sb)
2000 static inline int security_sb_copy_data(char *orig, char *copy)
2005 static inline int security_sb_remount(struct super_block *sb, void *data)
2010 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
2015 static inline int security_sb_show_options(struct seq_file *m,
2016 struct super_block *sb)
2021 static inline int security_sb_statfs(struct dentry *dentry)
2026 static inline int security_sb_mount(const char *dev_name, struct path *path,
2027 const char *type, unsigned long flags,
2033 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
2038 static inline int security_sb_pivotroot(struct path *old_path,
2039 struct path *new_path)
2044 static inline int security_sb_set_mnt_opts(struct super_block *sb,
2045 struct security_mnt_opts *opts,
2046 unsigned long kern_flags,
2047 unsigned long *set_kern_flags)
2052 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
2053 struct super_block *newsb)
2058 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
2063 static inline int security_inode_alloc(struct inode *inode)
2068 static inline void security_inode_free(struct inode *inode)
2071 static inline int security_dentry_init_security(struct dentry *dentry,
2081 static inline int security_inode_init_security(struct inode *inode,
2083 const struct qstr *qstr,
2084 const initxattrs initxattrs,
2090 static inline int security_old_inode_init_security(struct inode *inode,
2092 const struct qstr *qstr,
2093 char **name, void **value,
2099 static inline int security_inode_create(struct inode *dir,
2100 struct dentry *dentry,
2106 static inline int security_inode_link(struct dentry *old_dentry,
2108 struct dentry *new_dentry)
2113 static inline int security_inode_unlink(struct inode *dir,
2114 struct dentry *dentry)
2119 static inline int security_inode_symlink(struct inode *dir,
2120 struct dentry *dentry,
2121 const char *old_name)
2126 static inline int security_inode_mkdir(struct inode *dir,
2127 struct dentry *dentry,
2133 static inline int security_inode_rmdir(struct inode *dir,
2134 struct dentry *dentry)
2139 static inline int security_inode_mknod(struct inode *dir,
2140 struct dentry *dentry,
2141 int mode, dev_t dev)
2146 static inline int security_inode_rename(struct inode *old_dir,
2147 struct dentry *old_dentry,
2148 struct inode *new_dir,
2149 struct dentry *new_dentry)
2154 static inline int security_inode_readlink(struct dentry *dentry)
2159 static inline int security_inode_follow_link(struct dentry *dentry,
2160 struct nameidata *nd)
2165 static inline int security_inode_permission(struct inode *inode, int mask)
2170 static inline int security_inode_setattr(struct dentry *dentry,
2176 static inline int security_inode_getattr(struct vfsmount *mnt,
2177 struct dentry *dentry)
2182 static inline int security_inode_setxattr(struct dentry *dentry,
2183 const char *name, const void *value, size_t size, int flags)
2185 return cap_inode_setxattr(dentry, name, value, size, flags);
2188 static inline void security_inode_post_setxattr(struct dentry *dentry,
2189 const char *name, const void *value, size_t size, int flags)
2192 static inline int security_inode_getxattr(struct dentry *dentry,
2198 static inline int security_inode_listxattr(struct dentry *dentry)
2203 static inline int security_inode_removexattr(struct dentry *dentry,
2206 return cap_inode_removexattr(dentry, name);
2209 static inline int security_inode_need_killpriv(struct dentry *dentry)
2211 return cap_inode_need_killpriv(dentry);
2214 static inline int security_inode_killpriv(struct dentry *dentry)
2216 return cap_inode_killpriv(dentry);
2219 static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
2224 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
2229 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
2234 static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
2239 static inline int security_file_permission(struct file *file, int mask)
2244 static inline int security_file_alloc(struct file *file)
2249 static inline void security_file_free(struct file *file)
2252 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
2258 static inline int security_mmap_file(struct file *file, unsigned long prot,
2259 unsigned long flags)
2264 static inline int security_mmap_addr(unsigned long addr)
2266 return cap_mmap_addr(addr);
2269 static inline int security_file_mprotect(struct vm_area_struct *vma,
2270 unsigned long reqprot,
2276 static inline int security_file_lock(struct file *file, unsigned int cmd)
2281 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
2287 static inline int security_file_set_fowner(struct file *file)
2292 static inline int security_file_send_sigiotask(struct task_struct *tsk,
2293 struct fown_struct *fown,
2299 static inline int security_file_receive(struct file *file)
2304 static inline int security_file_open(struct file *file,
2305 const struct cred *cred)
2310 static inline int security_task_create(unsigned long clone_flags)
2315 static inline void security_task_free(struct task_struct *task)
2318 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
2323 static inline void security_cred_free(struct cred *cred)
2326 static inline int security_prepare_creds(struct cred *new,
2327 const struct cred *old,
2333 static inline void security_transfer_creds(struct cred *new,
2334 const struct cred *old)
2338 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
2343 static inline int security_kernel_create_files_as(struct cred *cred,
2344 struct inode *inode)
2349 static inline int security_kernel_module_request(char *kmod_name)
2354 static inline int security_kernel_module_from_file(struct file *file)
2359 static inline int security_task_fix_setuid(struct cred *new,
2360 const struct cred *old,
2363 return cap_task_fix_setuid(new, old, flags);
2366 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
2371 static inline int security_task_getpgid(struct task_struct *p)
2376 static inline int security_task_getsid(struct task_struct *p)
2381 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
2386 static inline int security_task_setnice(struct task_struct *p, int nice)
2388 return cap_task_setnice(p, nice);
2391 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
2393 return cap_task_setioprio(p, ioprio);
2396 static inline int security_task_getioprio(struct task_struct *p)
2401 static inline int security_task_setrlimit(struct task_struct *p,
2402 unsigned int resource,
2403 struct rlimit *new_rlim)
2408 static inline int security_task_setscheduler(struct task_struct *p)
2410 return cap_task_setscheduler(p);
2413 static inline int security_task_getscheduler(struct task_struct *p)
2418 static inline int security_task_movememory(struct task_struct *p)
2423 static inline int security_task_kill(struct task_struct *p,
2424 struct siginfo *info, int sig,
2430 static inline int security_task_wait(struct task_struct *p)
2435 static inline int security_task_prctl(int option, unsigned long arg2,
2440 return cap_task_prctl(option, arg2, arg3, arg3, arg5);
2443 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
2446 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
2452 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
2457 static inline int security_msg_msg_alloc(struct msg_msg *msg)
2462 static inline void security_msg_msg_free(struct msg_msg *msg)
2465 static inline int security_msg_queue_alloc(struct msg_queue *msq)
2470 static inline void security_msg_queue_free(struct msg_queue *msq)
2473 static inline int security_msg_queue_associate(struct msg_queue *msq,
2479 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
2484 static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
2485 struct msg_msg *msg, int msqflg)
2490 static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
2491 struct msg_msg *msg,
2492 struct task_struct *target,
2493 long type, int mode)
2498 static inline int security_shm_alloc(struct shmid_kernel *shp)
2503 static inline void security_shm_free(struct shmid_kernel *shp)
2506 static inline int security_shm_associate(struct shmid_kernel *shp,
2512 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
2517 static inline int security_shm_shmat(struct shmid_kernel *shp,
2518 char __user *shmaddr, int shmflg)
2523 static inline int security_sem_alloc(struct sem_array *sma)
2528 static inline void security_sem_free(struct sem_array *sma)
2531 static inline int security_sem_associate(struct sem_array *sma, int semflg)
2536 static inline int security_sem_semctl(struct sem_array *sma, int cmd)
2541 static inline int security_sem_semop(struct sem_array *sma,
2542 struct sembuf *sops, unsigned nsops,
2548 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
2551 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
2556 static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2561 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
2563 return cap_netlink_send(sk, skb);
2566 static inline int security_ismaclabel(const char *name)
2571 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2576 static inline int security_secctx_to_secid(const char *secdata,
2583 static inline void security_release_secctx(char *secdata, u32 seclen)
2587 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
2591 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
2595 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
2599 #endif /* CONFIG_SECURITY */
2601 #ifdef CONFIG_SECURITY_NETWORK
2603 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
2604 int security_unix_may_send(struct socket *sock, struct socket *other);
2605 int security_socket_create(int family, int type, int protocol, int kern);
2606 int security_socket_post_create(struct socket *sock, int family,
2607 int type, int protocol, int kern);
2608 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
2609 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
2610 int security_socket_listen(struct socket *sock, int backlog);
2611 int security_socket_accept(struct socket *sock, struct socket *newsock);
2612 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
2613 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2614 int size, int flags);
2615 int security_socket_getsockname(struct socket *sock);
2616 int security_socket_getpeername(struct socket *sock);
2617 int security_socket_getsockopt(struct socket *sock, int level, int optname);
2618 int security_socket_setsockopt(struct socket *sock, int level, int optname);
2619 int security_socket_shutdown(struct socket *sock, int how);
2620 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
2621 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2622 int __user *optlen, unsigned len);
2623 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
2624 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
2625 void security_sk_free(struct sock *sk);
2626 void security_sk_clone(const struct sock *sk, struct sock *newsk);
2627 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
2628 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
2629 void security_sock_graft(struct sock*sk, struct socket *parent);
2630 int security_inet_conn_request(struct sock *sk,
2631 struct sk_buff *skb, struct request_sock *req);
2632 void security_inet_csk_clone(struct sock *newsk,
2633 const struct request_sock *req);
2634 void security_inet_conn_established(struct sock *sk,
2635 struct sk_buff *skb);
2636 int security_secmark_relabel_packet(u32 secid);
2637 void security_secmark_refcount_inc(void);
2638 void security_secmark_refcount_dec(void);
2639 int security_tun_dev_alloc_security(void **security);
2640 void security_tun_dev_free_security(void *security);
2641 int security_tun_dev_create(void);
2642 int security_tun_dev_attach_queue(void *security);
2643 int security_tun_dev_attach(struct sock *sk, void *security);
2644 int security_tun_dev_open(void *security);
2646 void security_skb_owned_by(struct sk_buff *skb, struct sock *sk);
2648 #else /* CONFIG_SECURITY_NETWORK */
2649 static inline int security_unix_stream_connect(struct sock *sock,
2656 static inline int security_unix_may_send(struct socket *sock,
2657 struct socket *other)
2662 static inline int security_socket_create(int family, int type,
2663 int protocol, int kern)
2668 static inline int security_socket_post_create(struct socket *sock,
2671 int protocol, int kern)
2676 static inline int security_socket_bind(struct socket *sock,
2677 struct sockaddr *address,
2683 static inline int security_socket_connect(struct socket *sock,
2684 struct sockaddr *address,
2690 static inline int security_socket_listen(struct socket *sock, int backlog)
2695 static inline int security_socket_accept(struct socket *sock,
2696 struct socket *newsock)
2701 static inline int security_socket_sendmsg(struct socket *sock,
2702 struct msghdr *msg, int size)
2707 static inline int security_socket_recvmsg(struct socket *sock,
2708 struct msghdr *msg, int size,
2714 static inline int security_socket_getsockname(struct socket *sock)
2719 static inline int security_socket_getpeername(struct socket *sock)
2724 static inline int security_socket_getsockopt(struct socket *sock,
2725 int level, int optname)
2730 static inline int security_socket_setsockopt(struct socket *sock,
2731 int level, int optname)
2736 static inline int security_socket_shutdown(struct socket *sock, int how)
2740 static inline int security_sock_rcv_skb(struct sock *sk,
2741 struct sk_buff *skb)
2746 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2747 int __user *optlen, unsigned len)
2749 return -ENOPROTOOPT;
2752 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
2754 return -ENOPROTOOPT;
2757 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2762 static inline void security_sk_free(struct sock *sk)
2766 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
2770 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
2774 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2778 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
2782 static inline int security_inet_conn_request(struct sock *sk,
2783 struct sk_buff *skb, struct request_sock *req)
2788 static inline void security_inet_csk_clone(struct sock *newsk,
2789 const struct request_sock *req)
2793 static inline void security_inet_conn_established(struct sock *sk,
2794 struct sk_buff *skb)
2798 static inline int security_secmark_relabel_packet(u32 secid)
2803 static inline void security_secmark_refcount_inc(void)
2807 static inline void security_secmark_refcount_dec(void)
2811 static inline int security_tun_dev_alloc_security(void **security)
2816 static inline void security_tun_dev_free_security(void *security)
2820 static inline int security_tun_dev_create(void)
2825 static inline int security_tun_dev_attach_queue(void *security)
2830 static inline int security_tun_dev_attach(struct sock *sk, void *security)
2835 static inline int security_tun_dev_open(void *security)
2840 static inline void security_skb_owned_by(struct sk_buff *skb, struct sock *sk)
2844 #endif /* CONFIG_SECURITY_NETWORK */
2846 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2848 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx);
2849 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
2850 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
2851 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
2852 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
2853 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2854 struct xfrm_sec_ctx *polsec, u32 secid);
2855 int security_xfrm_state_delete(struct xfrm_state *x);
2856 void security_xfrm_state_free(struct xfrm_state *x);
2857 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
2858 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2859 struct xfrm_policy *xp,
2860 const struct flowi *fl);
2861 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
2862 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
2864 #else /* CONFIG_SECURITY_NETWORK_XFRM */
2866 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
2871 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
2876 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
2880 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
2885 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
2886 struct xfrm_user_sec_ctx *sec_ctx)
2891 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2892 struct xfrm_sec_ctx *polsec, u32 secid)
2897 static inline void security_xfrm_state_free(struct xfrm_state *x)
2901 static inline int security_xfrm_state_delete(struct xfrm_state *x)
2906 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
2911 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2912 struct xfrm_policy *xp, const struct flowi *fl)
2917 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
2922 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2926 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2928 #ifdef CONFIG_SECURITY_PATH
2929 int security_path_unlink(struct path *dir, struct dentry *dentry);
2930 int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode);
2931 int security_path_rmdir(struct path *dir, struct dentry *dentry);
2932 int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode,
2934 int security_path_truncate(struct path *path);
2935 int security_path_symlink(struct path *dir, struct dentry *dentry,
2936 const char *old_name);
2937 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
2938 struct dentry *new_dentry);
2939 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
2940 struct path *new_dir, struct dentry *new_dentry);
2941 int security_path_chmod(struct path *path, umode_t mode);
2942 int security_path_chown(struct path *path, kuid_t uid, kgid_t gid);
2943 int security_path_chroot(struct path *path);
2944 #else /* CONFIG_SECURITY_PATH */
2945 static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
2950 static inline int security_path_mkdir(struct path *dir, struct dentry *dentry,
2956 static inline int security_path_rmdir(struct path *dir, struct dentry *dentry)
2961 static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
2962 umode_t mode, unsigned int dev)
2967 static inline int security_path_truncate(struct path *path)
2972 static inline int security_path_symlink(struct path *dir, struct dentry *dentry,
2973 const char *old_name)
2978 static inline int security_path_link(struct dentry *old_dentry,
2979 struct path *new_dir,
2980 struct dentry *new_dentry)
2985 static inline int security_path_rename(struct path *old_dir,
2986 struct dentry *old_dentry,
2987 struct path *new_dir,
2988 struct dentry *new_dentry)
2993 static inline int security_path_chmod(struct path *path, umode_t mode)
2998 static inline int security_path_chown(struct path *path, kuid_t uid, kgid_t gid)
3003 static inline int security_path_chroot(struct path *path)
3007 #endif /* CONFIG_SECURITY_PATH */
3010 #ifdef CONFIG_SECURITY
3012 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
3013 void security_key_free(struct key *key);
3014 int security_key_permission(key_ref_t key_ref,
3015 const struct cred *cred, key_perm_t perm);
3016 int security_key_getsecurity(struct key *key, char **_buffer);
3020 static inline int security_key_alloc(struct key *key,
3021 const struct cred *cred,
3022 unsigned long flags)
3027 static inline void security_key_free(struct key *key)
3031 static inline int security_key_permission(key_ref_t key_ref,
3032 const struct cred *cred,
3038 static inline int security_key_getsecurity(struct key *key, char **_buffer)
3045 #endif /* CONFIG_KEYS */
3048 #ifdef CONFIG_SECURITY
3049 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
3050 int security_audit_rule_known(struct audit_krule *krule);
3051 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
3052 struct audit_context *actx);
3053 void security_audit_rule_free(void *lsmrule);
3057 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
3063 static inline int security_audit_rule_known(struct audit_krule *krule)
3068 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
3069 void *lsmrule, struct audit_context *actx)
3074 static inline void security_audit_rule_free(void *lsmrule)
3077 #endif /* CONFIG_SECURITY */
3078 #endif /* CONFIG_AUDIT */
3080 #ifdef CONFIG_SECURITYFS
3082 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
3083 struct dentry *parent, void *data,
3084 const struct file_operations *fops);
3085 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
3086 extern void securityfs_remove(struct dentry *dentry);
3088 #else /* CONFIG_SECURITYFS */
3090 static inline struct dentry *securityfs_create_dir(const char *name,
3091 struct dentry *parent)
3093 return ERR_PTR(-ENODEV);
3096 static inline struct dentry *securityfs_create_file(const char *name,
3098 struct dentry *parent,
3100 const struct file_operations *fops)
3102 return ERR_PTR(-ENODEV);
3105 static inline void securityfs_remove(struct dentry *dentry)
3110 #ifdef CONFIG_SECURITY
3112 static inline char *alloc_secdata(void)
3114 return (char *)get_zeroed_page(GFP_KERNEL);
3117 static inline void free_secdata(void *secdata)
3119 free_page((unsigned long)secdata);
3124 static inline char *alloc_secdata(void)
3129 static inline void free_secdata(void *secdata)
3131 #endif /* CONFIG_SECURITY */
3133 #ifdef CONFIG_SECURITY_YAMA
3134 extern int yama_ptrace_access_check(struct task_struct *child,
3136 extern int yama_ptrace_traceme(struct task_struct *parent);
3137 extern void yama_task_free(struct task_struct *task);
3138 extern int yama_task_prctl(int option, unsigned long arg2, unsigned long arg3,
3139 unsigned long arg4, unsigned long arg5);
3141 static inline int yama_ptrace_access_check(struct task_struct *child,
3147 static inline int yama_ptrace_traceme(struct task_struct *parent)
3152 static inline void yama_task_free(struct task_struct *task)
3156 static inline int yama_task_prctl(int option, unsigned long arg2,
3157 unsigned long arg3, unsigned long arg4,
3162 #endif /* CONFIG_SECURITY_YAMA */
3164 #endif /* ! __LINUX_SECURITY_H */