4 * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
5 * Copyright (C) 2001 Greg Kroah-Hartman <greg@kroah.com>
6 * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
7 * Copyright (C) 2001 James Morris <jmorris@intercode.com.au>
8 * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group)
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * Due to this file being licensed under the GPL there is controversy over
16 * whether this permits you to write a module that #includes this file
17 * without placing your module under the GPL. Please consult a lawyer for
18 * advice before doing this.
22 #ifndef __LINUX_SECURITY_H
23 #define __LINUX_SECURITY_H
26 #include <linux/binfmts.h>
27 #include <linux/signal.h>
28 #include <linux/resource.h>
29 #include <linux/sem.h>
30 #include <linux/shm.h>
31 #include <linux/mm.h> /* PAGE_ALIGN */
32 #include <linux/msg.h>
33 #include <linux/sched.h>
34 #include <linux/key.h>
35 #include <linux/xfrm.h>
36 #include <linux/gfp.h>
39 /* Maximum number of letters for an LSM name string */
40 #define SECURITY_NAME_MAX 10
42 /* If capable should audit the security request */
43 #define SECURITY_CAP_NOAUDIT 0
44 #define SECURITY_CAP_AUDIT 1
50 * These functions are in security/capability.c and are used
51 * as the default capabilities functions
53 extern int cap_capable(struct task_struct *tsk, const struct cred *cred,
55 extern int cap_settime(struct timespec *ts, struct timezone *tz);
56 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
57 extern int cap_ptrace_traceme(struct task_struct *parent);
58 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
59 extern int cap_capset(struct cred *new, const struct cred *old,
60 const kernel_cap_t *effective,
61 const kernel_cap_t *inheritable,
62 const kernel_cap_t *permitted);
63 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
64 extern int cap_bprm_secureexec(struct linux_binprm *bprm);
65 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
66 const void *value, size_t size, int flags);
67 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
68 extern int cap_inode_need_killpriv(struct dentry *dentry);
69 extern int cap_inode_killpriv(struct dentry *dentry);
70 extern int cap_file_mmap(struct file *file, unsigned long reqprot,
71 unsigned long prot, unsigned long flags,
72 unsigned long addr, unsigned long addr_only);
73 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
74 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
75 unsigned long arg4, unsigned long arg5);
76 extern int cap_task_setscheduler(struct task_struct *p, int policy, struct sched_param *lp);
77 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
78 extern int cap_task_setnice(struct task_struct *p, int nice);
79 extern int cap_syslog(int type, bool from_file);
80 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
92 struct xfrm_user_sec_ctx;
95 extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
96 extern int cap_netlink_recv(struct sk_buff *skb, int cap);
98 void reset_security_ops(void);
101 extern unsigned long mmap_min_addr;
102 extern unsigned long dac_mmap_min_addr;
104 #define dac_mmap_min_addr 0UL
108 * Values used in the task_security_ops calls
110 /* setuid or setgid, id0 == uid or gid */
111 #define LSM_SETID_ID 1
113 /* setreuid or setregid, id0 == real, id1 == eff */
114 #define LSM_SETID_RE 2
116 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
117 #define LSM_SETID_RES 4
119 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
120 #define LSM_SETID_FS 8
122 /* forward declares to avoid warnings */
126 /* bprm->unsafe reasons */
127 #define LSM_UNSAFE_SHARE 1
128 #define LSM_UNSAFE_PTRACE 2
129 #define LSM_UNSAFE_PTRACE_CAP 4
133 * If a hint addr is less than mmap_min_addr change hint to be as
134 * low as possible but still greater than mmap_min_addr
136 static inline unsigned long round_hint_to_min(unsigned long hint)
139 if (((void *)hint != NULL) &&
140 (hint < mmap_min_addr))
141 return PAGE_ALIGN(mmap_min_addr);
144 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
145 void __user *buffer, size_t *lenp, loff_t *ppos);
148 #ifdef CONFIG_SECURITY
150 struct security_mnt_opts {
156 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
158 opts->mnt_opts = NULL;
159 opts->mnt_opts_flags = NULL;
160 opts->num_mnt_opts = 0;
163 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
167 for (i = 0; i < opts->num_mnt_opts; i++)
168 kfree(opts->mnt_opts[i]);
169 kfree(opts->mnt_opts);
170 opts->mnt_opts = NULL;
171 kfree(opts->mnt_opts_flags);
172 opts->mnt_opts_flags = NULL;
173 opts->num_mnt_opts = 0;
177 * struct security_operations - main security structure
179 * Security module identifier.
182 * A string that acts as a unique identifeir for the LSM with max number
183 * of characters = SECURITY_NAME_MAX.
185 * Security hooks for program execution operations.
188 * Save security information in the bprm->security field, typically based
189 * on information about the bprm->file, for later use by the apply_creds
190 * hook. This hook may also optionally check permissions (e.g. for
191 * transitions between security domains).
192 * This hook may be called multiple times during a single execve, e.g. for
193 * interpreters. The hook can tell whether it has already been called by
194 * checking to see if @bprm->security is non-NULL. If so, then the hook
195 * may decide either to retain the security information saved earlier or
197 * @bprm contains the linux_binprm structure.
198 * Return 0 if the hook is successful and permission is granted.
199 * @bprm_check_security:
200 * This hook mediates the point when a search for a binary handler will
201 * begin. It allows a check the @bprm->security value which is set in the
202 * preceding set_creds call. The primary difference from set_creds is
203 * that the argv list and envp list are reliably available in @bprm. This
204 * hook may be called multiple times during a single execve; and in each
205 * pass set_creds is called first.
206 * @bprm contains the linux_binprm structure.
207 * Return 0 if the hook is successful and permission is granted.
208 * @bprm_committing_creds:
209 * Prepare to install the new security attributes of a process being
210 * transformed by an execve operation, based on the old credentials
211 * pointed to by @current->cred and the information set in @bprm->cred by
212 * the bprm_set_creds hook. @bprm points to the linux_binprm structure.
213 * This hook is a good place to perform state changes on the process such
214 * as closing open file descriptors to which access will no longer be
215 * granted when the attributes are changed. This is called immediately
216 * before commit_creds().
217 * @bprm_committed_creds:
218 * Tidy up after the installation of the new security attributes of a
219 * process being transformed by an execve operation. The new credentials
220 * have, by this point, been set to @current->cred. @bprm points to the
221 * linux_binprm structure. This hook is a good place to perform state
222 * changes on the process such as clearing out non-inheritable signal
223 * state. This is called immediately after commit_creds().
225 * Return a boolean value (0 or 1) indicating whether a "secure exec"
226 * is required. The flag is passed in the auxiliary table
227 * on the initial stack to the ELF interpreter to indicate whether libc
228 * should enable secure mode.
229 * @bprm contains the linux_binprm structure.
231 * Security hooks for filesystem operations.
233 * @sb_alloc_security:
234 * Allocate and attach a security structure to the sb->s_security field.
235 * The s_security field is initialized to NULL when the structure is
237 * @sb contains the super_block structure to be modified.
238 * Return 0 if operation was successful.
240 * Deallocate and clear the sb->s_security field.
241 * @sb contains the super_block structure to be modified.
243 * Check permission before obtaining filesystem statistics for the @mnt
245 * @dentry is a handle on the superblock for the filesystem.
246 * Return 0 if permission is granted.
248 * Check permission before an object specified by @dev_name is mounted on
249 * the mount point named by @nd. For an ordinary mount, @dev_name
250 * identifies a device if the file system type requires a device. For a
251 * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a
252 * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
253 * pathname of the object being mounted.
254 * @dev_name contains the name for object being mounted.
255 * @path contains the path for mount point object.
256 * @type contains the filesystem type.
257 * @flags contains the mount flags.
258 * @data contains the filesystem-specific data.
259 * Return 0 if permission is granted.
261 * Allow mount option data to be copied prior to parsing by the filesystem,
262 * so that the security module can extract security-specific mount
263 * options cleanly (a filesystem may modify the data e.g. with strsep()).
264 * This also allows the original mount data to be stripped of security-
265 * specific options to avoid having to make filesystems aware of them.
266 * @type the type of filesystem being mounted.
267 * @orig the original mount data copied from userspace.
268 * @copy copied data which will be passed to the security module.
269 * Returns 0 if the copy was successful.
271 * Check permission before the @mnt file system is unmounted.
272 * @mnt contains the mounted file system.
273 * @flags contains the unmount flags, e.g. MNT_FORCE.
274 * Return 0 if permission is granted.
276 * Update the security module's state when a filesystem is mounted.
277 * This hook is called any time a mount is successfully grafetd to
279 * @mnt contains the mounted filesystem.
280 * @mountpoint contains the path for the mount point.
282 * Check permission before pivoting the root filesystem.
283 * @old_path contains the path for the new location of the current root (put_old).
284 * @new_path contains the path for the new root (new_root).
285 * Return 0 if permission is granted.
286 * @sb_post_pivotroot:
287 * Update module state after a successful pivot.
288 * @old_path contains the path for the old root.
289 * @new_path contains the path for the new root.
291 * Set the security relevant mount options used for a superblock
292 * @sb the superblock to set security mount options for
293 * @opts binary data structure containing all lsm mount data
294 * @sb_clone_mnt_opts:
295 * Copy all security options from a given superblock to another
296 * @oldsb old superblock which contain information to clone
297 * @newsb new superblock which needs filled in
298 * @sb_parse_opts_str:
299 * Parse a string of security data filling in the opts structure
300 * @options string containing all mount options known by the LSM
301 * @opts binary data structure usable by the LSM
303 * Security hooks for inode operations.
305 * @inode_alloc_security:
306 * Allocate and attach a security structure to @inode->i_security. The
307 * i_security field is initialized to NULL when the inode structure is
309 * @inode contains the inode structure.
310 * Return 0 if operation was successful.
311 * @inode_free_security:
312 * @inode contains the inode structure.
313 * Deallocate the inode security structure and set @inode->i_security to
315 * @inode_init_security:
316 * Obtain the security attribute name suffix and value to set on a newly
317 * created inode and set up the incore security field for the new inode.
318 * This hook is called by the fs code as part of the inode creation
319 * transaction and provides for atomic labeling of the inode, unlike
320 * the post_create/mkdir/... hooks called by the VFS. The hook function
321 * is expected to allocate the name and value via kmalloc, with the caller
322 * being responsible for calling kfree after using them.
323 * If the security module does not use security attributes or does
324 * not wish to put a security attribute on this particular inode,
325 * then it should return -EOPNOTSUPP to skip this processing.
326 * @inode contains the inode structure of the newly created inode.
327 * @dir contains the inode structure of the parent directory.
328 * @name will be set to the allocated name suffix (e.g. selinux).
329 * @value will be set to the allocated attribute value.
330 * @len will be set to the length of the value.
331 * Returns 0 if @name and @value have been successfully set,
332 * -EOPNOTSUPP if no security attribute is needed, or
333 * -ENOMEM on memory allocation failure.
335 * Check permission to create a regular file.
336 * @dir contains inode structure of the parent of the new file.
337 * @dentry contains the dentry structure for the file to be created.
338 * @mode contains the file mode of the file to be created.
339 * Return 0 if permission is granted.
341 * Check permission before creating a new hard link to a file.
342 * @old_dentry contains the dentry structure for an existing link to the file.
343 * @dir contains the inode structure of the parent directory of the new link.
344 * @new_dentry contains the dentry structure for the new link.
345 * Return 0 if permission is granted.
347 * Check permission before creating a new hard link to a file.
348 * @old_dentry contains the dentry structure for an existing link
350 * @new_dir contains the path structure of the parent directory of
352 * @new_dentry contains the dentry structure for the new link.
353 * Return 0 if permission is granted.
355 * Check the permission to remove a hard link to a file.
356 * @dir contains the inode structure of parent directory of the file.
357 * @dentry contains the dentry structure for file to be unlinked.
358 * Return 0 if permission is granted.
360 * Check the permission to remove a hard link to a file.
361 * @dir contains the path structure of parent directory of the file.
362 * @dentry contains the dentry structure for file to be unlinked.
363 * Return 0 if permission is granted.
365 * Check the permission to create a symbolic link to a file.
366 * @dir contains the inode structure of parent directory of the symbolic link.
367 * @dentry contains the dentry structure of the symbolic link.
368 * @old_name contains the pathname of file.
369 * Return 0 if permission is granted.
371 * Check the permission to create a symbolic link to a file.
372 * @dir contains the path structure of parent directory of
374 * @dentry contains the dentry structure of the symbolic link.
375 * @old_name contains the pathname of file.
376 * Return 0 if permission is granted.
378 * Check permissions to create a new directory in the existing directory
379 * associated with inode strcture @dir.
380 * @dir containst the inode structure of parent of the directory to be created.
381 * @dentry contains the dentry structure of new directory.
382 * @mode contains the mode of new directory.
383 * Return 0 if permission is granted.
385 * Check permissions to create a new directory in the existing directory
386 * associated with path strcture @path.
387 * @dir containst the path structure of parent of the directory
389 * @dentry contains the dentry structure of new directory.
390 * @mode contains the mode of new directory.
391 * Return 0 if permission is granted.
393 * Check the permission to remove a directory.
394 * @dir contains the inode structure of parent of the directory to be removed.
395 * @dentry contains the dentry structure of directory to be removed.
396 * Return 0 if permission is granted.
398 * Check the permission to remove a directory.
399 * @dir contains the path structure of parent of the directory to be
401 * @dentry contains the dentry structure of directory to be removed.
402 * Return 0 if permission is granted.
404 * Check permissions when creating a special file (or a socket or a fifo
405 * file created via the mknod system call). Note that if mknod operation
406 * is being done for a regular file, then the create hook will be called
408 * @dir contains the inode structure of parent of the new file.
409 * @dentry contains the dentry structure of the new file.
410 * @mode contains the mode of the new file.
411 * @dev contains the device number.
412 * Return 0 if permission is granted.
414 * Check permissions when creating a file. Note that this hook is called
415 * even if mknod operation is being done for a regular file.
416 * @dir contains the path structure of parent of the new file.
417 * @dentry contains the dentry structure of the new file.
418 * @mode contains the mode of the new file.
419 * @dev contains the undecoded device number. Use new_decode_dev() to get
420 * the decoded device number.
421 * Return 0 if permission is granted.
423 * Check for permission to rename a file or directory.
424 * @old_dir contains the inode structure for parent of the old link.
425 * @old_dentry contains the dentry structure of the old link.
426 * @new_dir contains the inode structure for parent of the new link.
427 * @new_dentry contains the dentry structure of the new link.
428 * Return 0 if permission is granted.
430 * Check for permission to rename a file or directory.
431 * @old_dir contains the path structure for parent of the old link.
432 * @old_dentry contains the dentry structure of the old link.
433 * @new_dir contains the path structure for parent of the new link.
434 * @new_dentry contains the dentry structure of the new link.
435 * Return 0 if permission is granted.
437 * Check for permission to change DAC's permission of a file or directory.
438 * @dentry contains the dentry structure.
439 * @mnt contains the vfsmnt structure.
440 * @mode contains DAC's mode.
441 * Return 0 if permission is granted.
443 * Check for permission to change owner/group of a file or directory.
444 * @path contains the path structure.
445 * @uid contains new owner's ID.
446 * @gid contains new group's ID.
447 * Return 0 if permission is granted.
449 * Check for permission to change root directory.
450 * @path contains the path structure.
451 * Return 0 if permission is granted.
453 * Check the permission to read the symbolic link.
454 * @dentry contains the dentry structure for the file link.
455 * Return 0 if permission is granted.
456 * @inode_follow_link:
457 * Check permission to follow a symbolic link when looking up a pathname.
458 * @dentry contains the dentry structure for the link.
459 * @nd contains the nameidata structure for the parent directory.
460 * Return 0 if permission is granted.
462 * Check permission before accessing an inode. This hook is called by the
463 * existing Linux permission function, so a security module can use it to
464 * provide additional checking for existing Linux permission checks.
465 * Notice that this hook is called when a file is opened (as well as many
466 * other operations), whereas the file_security_ops permission hook is
467 * called when the actual read/write operations are performed.
468 * @inode contains the inode structure to check.
469 * @mask contains the permission mask.
470 * @nd contains the nameidata (may be NULL).
471 * Return 0 if permission is granted.
473 * Check permission before setting file attributes. Note that the kernel
474 * call to notify_change is performed from several locations, whenever
475 * file attributes change (such as when a file is truncated, chown/chmod
476 * operations, transferring disk quotas, etc).
477 * @dentry contains the dentry structure for the file.
478 * @attr is the iattr structure containing the new file attributes.
479 * Return 0 if permission is granted.
481 * Check permission before truncating a file.
482 * @path contains the path structure for the file.
483 * @length is the new length of the file.
484 * @time_attrs is the flags passed to do_truncate().
485 * Return 0 if permission is granted.
487 * Check permission before obtaining file attributes.
488 * @mnt is the vfsmount where the dentry was looked up
489 * @dentry contains the dentry structure for the file.
490 * Return 0 if permission is granted.
492 * @inode contains the inode structure for deleted inode.
493 * This hook is called when a deleted inode is released (i.e. an inode
494 * with no hard links has its use count drop to zero). A security module
495 * can use this hook to release any persistent label associated with the
498 * Check permission before setting the extended attributes
499 * @value identified by @name for @dentry.
500 * Return 0 if permission is granted.
501 * @inode_post_setxattr:
502 * Update inode security field after successful setxattr operation.
503 * @value identified by @name for @dentry.
505 * Check permission before obtaining the extended attributes
506 * identified by @name for @dentry.
507 * Return 0 if permission is granted.
509 * Check permission before obtaining the list of extended attribute
511 * Return 0 if permission is granted.
512 * @inode_removexattr:
513 * Check permission before removing the extended attribute
514 * identified by @name for @dentry.
515 * Return 0 if permission is granted.
516 * @inode_getsecurity:
517 * Retrieve a copy of the extended attribute representation of the
518 * security label associated with @name for @inode via @buffer. Note that
519 * @name is the remainder of the attribute name after the security prefix
520 * has been removed. @alloc is used to specify of the call should return a
521 * value via the buffer or just the value length Return size of buffer on
523 * @inode_setsecurity:
524 * Set the security label associated with @name for @inode from the
525 * extended attribute value @value. @size indicates the size of the
526 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
527 * Note that @name is the remainder of the attribute name after the
528 * security. prefix has been removed.
529 * Return 0 on success.
530 * @inode_listsecurity:
531 * Copy the extended attribute names for the security labels
532 * associated with @inode into @buffer. The maximum size of @buffer
533 * is specified by @buffer_size. @buffer may be NULL to request
534 * the size of the buffer required.
535 * Returns number of bytes used/required on success.
536 * @inode_need_killpriv:
537 * Called when an inode has been changed.
538 * @dentry is the dentry being changed.
539 * Return <0 on error to abort the inode change operation.
540 * Return 0 if inode_killpriv does not need to be called.
541 * Return >0 if inode_killpriv does need to be called.
543 * The setuid bit is being removed. Remove similar security labels.
544 * Called with the dentry->d_inode->i_mutex held.
545 * @dentry is the dentry being changed.
546 * Return 0 on success. If error is returned, then the operation
547 * causing setuid bit removal is failed.
549 * Get the secid associated with the node.
550 * @inode contains a pointer to the inode.
551 * @secid contains a pointer to the location where result will be saved.
552 * In case of failure, @secid will be set to zero.
554 * Security hooks for file operations
557 * Check file permissions before accessing an open file. This hook is
558 * called by various operations that read or write files. A security
559 * module can use this hook to perform additional checking on these
560 * operations, e.g. to revalidate permissions on use to support privilege
561 * bracketing or policy changes. Notice that this hook is used when the
562 * actual read/write operations are performed, whereas the
563 * inode_security_ops hook is called when a file is opened (as well as
564 * many other operations).
565 * Caveat: Although this hook can be used to revalidate permissions for
566 * various system call operations that read or write files, it does not
567 * address the revalidation of permissions for memory-mapped files.
568 * Security modules must handle this separately if they need such
570 * @file contains the file structure being accessed.
571 * @mask contains the requested permissions.
572 * Return 0 if permission is granted.
573 * @file_alloc_security:
574 * Allocate and attach a security structure to the file->f_security field.
575 * The security field is initialized to NULL when the structure is first
577 * @file contains the file structure to secure.
578 * Return 0 if the hook is successful and permission is granted.
579 * @file_free_security:
580 * Deallocate and free any security structures stored in file->f_security.
581 * @file contains the file structure being modified.
583 * @file contains the file structure.
584 * @cmd contains the operation to perform.
585 * @arg contains the operational arguments.
586 * Check permission for an ioctl operation on @file. Note that @arg can
587 * sometimes represents a user space pointer; in other cases, it may be a
588 * simple integer value. When @arg represents a user space pointer, it
589 * should never be used by the security module.
590 * Return 0 if permission is granted.
592 * Check permissions for a mmap operation. The @file may be NULL, e.g.
593 * if mapping anonymous memory.
594 * @file contains the file structure for file to map (may be NULL).
595 * @reqprot contains the protection requested by the application.
596 * @prot contains the protection that will be applied by the kernel.
597 * @flags contains the operational flags.
598 * Return 0 if permission is granted.
600 * Check permissions before changing memory access permissions.
601 * @vma contains the memory region to modify.
602 * @reqprot contains the protection requested by the application.
603 * @prot contains the protection that will be applied by the kernel.
604 * Return 0 if permission is granted.
606 * Check permission before performing file locking operations.
607 * Note: this hook mediates both flock and fcntl style locks.
608 * @file contains the file structure.
609 * @cmd contains the posix-translated lock operation to perform
610 * (e.g. F_RDLCK, F_WRLCK).
611 * Return 0 if permission is granted.
613 * Check permission before allowing the file operation specified by @cmd
614 * from being performed on the file @file. Note that @arg can sometimes
615 * represents a user space pointer; in other cases, it may be a simple
616 * integer value. When @arg represents a user space pointer, it should
617 * never be used by the security module.
618 * @file contains the file structure.
619 * @cmd contains the operation to be performed.
620 * @arg contains the operational arguments.
621 * Return 0 if permission is granted.
623 * Save owner security information (typically from current->security) in
624 * file->f_security for later use by the send_sigiotask hook.
625 * @file contains the file structure to update.
626 * Return 0 on success.
627 * @file_send_sigiotask:
628 * Check permission for the file owner @fown to send SIGIO or SIGURG to the
629 * process @tsk. Note that this hook is sometimes called from interrupt.
630 * Note that the fown_struct, @fown, is never outside the context of a
631 * struct file, so the file structure (and associated security information)
632 * can always be obtained:
633 * container_of(fown, struct file, f_owner)
634 * @tsk contains the structure of task receiving signal.
635 * @fown contains the file owner information.
636 * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
637 * Return 0 if permission is granted.
639 * This hook allows security modules to control the ability of a process
640 * to receive an open file descriptor via socket IPC.
641 * @file contains the file structure being received.
642 * Return 0 if permission is granted.
644 * Security hook for dentry
647 * Save open-time permission checking state for later use upon
648 * file_permission, and recheck access if anything has changed
649 * since inode_permission.
651 * Security hooks for task operations.
654 * Check permission before creating a child process. See the clone(2)
655 * manual page for definitions of the @clone_flags.
656 * @clone_flags contains the flags indicating what should be shared.
657 * Return 0 if permission is granted.
659 * @cred points to the credentials.
660 * @gfp indicates the atomicity of any memory allocations.
661 * Only allocate sufficient memory and attach to @cred such that
662 * cred_transfer() will not get ENOMEM.
664 * @cred points to the credentials.
665 * Deallocate and clear the cred->security field in a set of credentials.
667 * @new points to the new credentials.
668 * @old points to the original credentials.
669 * @gfp indicates the atomicity of any memory allocations.
670 * Prepare a new set of credentials by copying the data from the old set.
672 * @new points to the new credentials.
673 * @old points to the original credentials.
674 * Install a new set of credentials.
676 * @new points to the new credentials.
677 * @old points to the original credentials.
678 * Transfer data from original creds to new creds
680 * Set the credentials for a kernel service to act as (subjective context).
681 * @new points to the credentials to be modified.
682 * @secid specifies the security ID to be set
683 * The current task must be the one that nominated @secid.
684 * Return 0 if successful.
685 * @kernel_create_files_as:
686 * Set the file creation context in a set of credentials to be the same as
687 * the objective context of the specified inode.
688 * @new points to the credentials to be modified.
689 * @inode points to the inode to use as a reference.
690 * The current task must be the one that nominated @inode.
691 * Return 0 if successful.
692 * @kernel_module_request:
693 * Ability to trigger the kernel to automatically upcall to userspace for
694 * userspace to load a kernel module with the given name.
695 * @kmod_name name of the module requested by the kernel
696 * Return 0 if successful.
698 * Check permission before setting one or more of the user identity
699 * attributes of the current process. The @flags parameter indicates
700 * which of the set*uid system calls invoked this hook and how to
701 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
702 * definitions at the beginning of this file for the @flags values and
704 * @id0 contains a uid.
705 * @id1 contains a uid.
706 * @id2 contains a uid.
707 * @flags contains one of the LSM_SETID_* values.
708 * Return 0 if permission is granted.
710 * Update the module's state after setting one or more of the user
711 * identity attributes of the current process. The @flags parameter
712 * indicates which of the set*uid system calls invoked this hook. If
713 * @new is the set of credentials that will be installed. Modifications
714 * should be made to this rather than to @current->cred.
715 * @old is the set of credentials that are being replaces
716 * @flags contains one of the LSM_SETID_* values.
717 * Return 0 on success.
719 * Check permission before setting one or more of the group identity
720 * attributes of the current process. The @flags parameter indicates
721 * which of the set*gid system calls invoked this hook and how to
722 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
723 * definitions at the beginning of this file for the @flags values and
725 * @id0 contains a gid.
726 * @id1 contains a gid.
727 * @id2 contains a gid.
728 * @flags contains one of the LSM_SETID_* values.
729 * Return 0 if permission is granted.
731 * Check permission before setting the process group identifier of the
732 * process @p to @pgid.
733 * @p contains the task_struct for process being modified.
734 * @pgid contains the new pgid.
735 * Return 0 if permission is granted.
737 * Check permission before getting the process group identifier of the
739 * @p contains the task_struct for the process.
740 * Return 0 if permission is granted.
742 * Check permission before getting the session identifier of the process
744 * @p contains the task_struct for the process.
745 * Return 0 if permission is granted.
747 * Retrieve the security identifier of the process @p.
748 * @p contains the task_struct for the process and place is into @secid.
749 * In case of failure, @secid will be set to zero.
752 * Check permission before setting the supplementary group set of the
754 * @group_info contains the new group information.
755 * Return 0 if permission is granted.
757 * Check permission before setting the nice value of @p to @nice.
758 * @p contains the task_struct of process.
759 * @nice contains the new nice value.
760 * Return 0 if permission is granted.
762 * Check permission before setting the ioprio value of @p to @ioprio.
763 * @p contains the task_struct of process.
764 * @ioprio contains the new ioprio value
765 * Return 0 if permission is granted.
767 * Check permission before getting the ioprio value of @p.
768 * @p contains the task_struct of process.
769 * Return 0 if permission is granted.
771 * Check permission before setting the resource limits of the current
772 * process for @resource to @new_rlim. The old resource limit values can
773 * be examined by dereferencing (current->signal->rlim + resource).
774 * @resource contains the resource whose limit is being set.
775 * @new_rlim contains the new limits for @resource.
776 * Return 0 if permission is granted.
777 * @task_setscheduler:
778 * Check permission before setting scheduling policy and/or parameters of
779 * process @p based on @policy and @lp.
780 * @p contains the task_struct for process.
781 * @policy contains the scheduling policy.
782 * @lp contains the scheduling parameters.
783 * Return 0 if permission is granted.
784 * @task_getscheduler:
785 * Check permission before obtaining scheduling information for process
787 * @p contains the task_struct for process.
788 * Return 0 if permission is granted.
790 * Check permission before moving memory owned by process @p.
791 * @p contains the task_struct for process.
792 * Return 0 if permission is granted.
794 * Check permission before sending signal @sig to @p. @info can be NULL,
795 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
796 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
797 * from the kernel and should typically be permitted.
798 * SIGIO signals are handled separately by the send_sigiotask hook in
800 * @p contains the task_struct for process.
801 * @info contains the signal information.
802 * @sig contains the signal value.
803 * @secid contains the sid of the process where the signal originated
804 * Return 0 if permission is granted.
806 * Check permission before allowing a process to reap a child process @p
807 * and collect its status information.
808 * @p contains the task_struct for process.
809 * Return 0 if permission is granted.
811 * Check permission before performing a process control operation on the
813 * @option contains the operation.
814 * @arg2 contains a argument.
815 * @arg3 contains a argument.
816 * @arg4 contains a argument.
817 * @arg5 contains a argument.
818 * Return -ENOSYS if no-one wanted to handle this op, any other value to
819 * cause prctl() to return immediately with that value.
821 * Set the security attributes for an inode based on an associated task's
822 * security attributes, e.g. for /proc/pid inodes.
823 * @p contains the task_struct for the task.
824 * @inode contains the inode structure for the inode.
826 * Security hooks for Netlink messaging.
829 * Save security information for a netlink message so that permission
830 * checking can be performed when the message is processed. The security
831 * information can be saved using the eff_cap field of the
832 * netlink_skb_parms structure. Also may be used to provide fine
833 * grained control over message transmission.
834 * @sk associated sock of task sending the message.,
835 * @skb contains the sk_buff structure for the netlink message.
836 * Return 0 if the information was successfully saved and message
837 * is allowed to be transmitted.
839 * Check permission before processing the received netlink message in
841 * @skb contains the sk_buff structure for the netlink message.
842 * @cap indicates the capability required
843 * Return 0 if permission is granted.
845 * Security hooks for Unix domain networking.
847 * @unix_stream_connect:
848 * Check permissions before establishing a Unix domain stream connection
849 * between @sock and @other.
850 * @sock contains the socket structure.
851 * @other contains the peer socket structure.
852 * Return 0 if permission is granted.
854 * Check permissions before connecting or sending datagrams from @sock to
856 * @sock contains the socket structure.
857 * @sock contains the peer socket structure.
858 * Return 0 if permission is granted.
860 * The @unix_stream_connect and @unix_may_send hooks were necessary because
861 * Linux provides an alternative to the conventional file name space for Unix
862 * domain sockets. Whereas binding and connecting to sockets in the file name
863 * space is mediated by the typical file permissions (and caught by the mknod
864 * and permission hooks in inode_security_ops), binding and connecting to
865 * sockets in the abstract name space is completely unmediated. Sufficient
866 * control of Unix domain sockets in the abstract name space isn't possible
867 * using only the socket layer hooks, since we need to know the actual target
868 * socket, which is not looked up until we are inside the af_unix code.
870 * Security hooks for socket operations.
873 * Check permissions prior to creating a new socket.
874 * @family contains the requested protocol family.
875 * @type contains the requested communications type.
876 * @protocol contains the requested protocol.
877 * @kern set to 1 if a kernel socket.
878 * Return 0 if permission is granted.
879 * @socket_post_create:
880 * This hook allows a module to update or allocate a per-socket security
881 * structure. Note that the security field was not added directly to the
882 * socket structure, but rather, the socket security information is stored
883 * in the associated inode. Typically, the inode alloc_security hook will
884 * allocate and and attach security information to
885 * sock->inode->i_security. This hook may be used to update the
886 * sock->inode->i_security field with additional information that wasn't
887 * available when the inode was allocated.
888 * @sock contains the newly created socket structure.
889 * @family contains the requested protocol family.
890 * @type contains the requested communications type.
891 * @protocol contains the requested protocol.
892 * @kern set to 1 if a kernel socket.
894 * Check permission before socket protocol layer bind operation is
895 * performed and the socket @sock is bound to the address specified in the
896 * @address parameter.
897 * @sock contains the socket structure.
898 * @address contains the address to bind to.
899 * @addrlen contains the length of address.
900 * Return 0 if permission is granted.
902 * Check permission before socket protocol layer connect operation
903 * attempts to connect socket @sock to a remote address, @address.
904 * @sock contains the socket structure.
905 * @address contains the address of remote endpoint.
906 * @addrlen contains the length of address.
907 * Return 0 if permission is granted.
909 * Check permission before socket protocol layer listen operation.
910 * @sock contains the socket structure.
911 * @backlog contains the maximum length for the pending connection queue.
912 * Return 0 if permission is granted.
914 * Check permission before accepting a new connection. Note that the new
915 * socket, @newsock, has been created and some information copied to it,
916 * but the accept operation has not actually been performed.
917 * @sock contains the listening socket structure.
918 * @newsock contains the newly created server socket for connection.
919 * Return 0 if permission is granted.
921 * Check permission before transmitting a message to another socket.
922 * @sock contains the socket structure.
923 * @msg contains the message to be transmitted.
924 * @size contains the size of message.
925 * Return 0 if permission is granted.
927 * Check permission before receiving a message from a socket.
928 * @sock contains the socket structure.
929 * @msg contains the message structure.
930 * @size contains the size of message structure.
931 * @flags contains the operational flags.
932 * Return 0 if permission is granted.
933 * @socket_getsockname:
934 * Check permission before the local address (name) of the socket object
935 * @sock is retrieved.
936 * @sock contains the socket structure.
937 * Return 0 if permission is granted.
938 * @socket_getpeername:
939 * Check permission before the remote address (name) of a socket object
940 * @sock is retrieved.
941 * @sock contains the socket structure.
942 * Return 0 if permission is granted.
943 * @socket_getsockopt:
944 * Check permissions before retrieving the options associated with socket
946 * @sock contains the socket structure.
947 * @level contains the protocol level to retrieve option from.
948 * @optname contains the name of option to retrieve.
949 * Return 0 if permission is granted.
950 * @socket_setsockopt:
951 * Check permissions before setting the options associated with socket
953 * @sock contains the socket structure.
954 * @level contains the protocol level to set options for.
955 * @optname contains the name of the option to set.
956 * Return 0 if permission is granted.
958 * Checks permission before all or part of a connection on the socket
959 * @sock is shut down.
960 * @sock contains the socket structure.
961 * @how contains the flag indicating how future sends and receives are handled.
962 * Return 0 if permission is granted.
963 * @socket_sock_rcv_skb:
964 * Check permissions on incoming network packets. This hook is distinct
965 * from Netfilter's IP input hooks since it is the first time that the
966 * incoming sk_buff @skb has been associated with a particular socket, @sk.
967 * Must not sleep inside this hook because some callers hold spinlocks.
968 * @sk contains the sock (not socket) associated with the incoming sk_buff.
969 * @skb contains the incoming network data.
970 * @socket_getpeersec_stream:
971 * This hook allows the security module to provide peer socket security
972 * state for unix or connected tcp sockets to userspace via getsockopt
973 * SO_GETPEERSEC. For tcp sockets this can be meaningful if the
974 * socket is associated with an ipsec SA.
975 * @sock is the local socket.
976 * @optval userspace memory where the security state is to be copied.
977 * @optlen userspace int where the module should copy the actual length
978 * of the security state.
979 * @len as input is the maximum length to copy to userspace provided
981 * Return 0 if all is well, otherwise, typical getsockopt return
983 * @socket_getpeersec_dgram:
984 * This hook allows the security module to provide peer socket security
985 * state for udp sockets on a per-packet basis to userspace via
986 * getsockopt SO_GETPEERSEC. The application must first have indicated
987 * the IP_PASSSEC option via getsockopt. It can then retrieve the
988 * security state returned by this hook for a packet via the SCM_SECURITY
989 * ancillary message type.
990 * @skb is the skbuff for the packet being queried
991 * @secdata is a pointer to a buffer in which to copy the security data
992 * @seclen is the maximum length for @secdata
993 * Return 0 on success, error on failure.
994 * @sk_alloc_security:
995 * Allocate and attach a security structure to the sk->sk_security field,
996 * which is used to copy security attributes between local stream sockets.
998 * Deallocate security structure.
999 * @sk_clone_security:
1000 * Clone/copy security structure.
1002 * Retrieve the LSM-specific secid for the sock to enable caching of network
1005 * Sets the socket's isec sid to the sock's sid.
1006 * @inet_conn_request:
1007 * Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
1009 * Sets the new child socket's sid to the openreq sid.
1010 * @inet_conn_established:
1011 * Sets the connection's peersid to the secmark on skb.
1012 * @req_classify_flow:
1013 * Sets the flow's sid to the openreq sid.
1015 * Check permissions prior to creating a new TUN device.
1016 * @tun_dev_post_create:
1017 * This hook allows a module to update or allocate a per-socket security
1019 * @sk contains the newly created sock structure.
1021 * Check permissions prior to attaching to a persistent TUN device. This
1022 * hook can also be used by the module to update any security state
1023 * associated with the TUN device's sock structure.
1024 * @sk contains the existing sock structure.
1026 * Security hooks for XFRM operations.
1028 * @xfrm_policy_alloc_security:
1029 * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
1030 * Database used by the XFRM system.
1031 * @sec_ctx contains the security context information being provided by
1032 * the user-level policy update program (e.g., setkey).
1033 * Allocate a security structure to the xp->security field; the security
1034 * field is initialized to NULL when the xfrm_policy is allocated.
1035 * Return 0 if operation was successful (memory to allocate, legal context)
1036 * @xfrm_policy_clone_security:
1037 * @old_ctx contains an existing xfrm_sec_ctx.
1038 * @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
1039 * Allocate a security structure in new_ctxp that contains the
1040 * information from the old_ctx structure.
1041 * Return 0 if operation was successful (memory to allocate).
1042 * @xfrm_policy_free_security:
1043 * @ctx contains the xfrm_sec_ctx
1044 * Deallocate xp->security.
1045 * @xfrm_policy_delete_security:
1046 * @ctx contains the xfrm_sec_ctx.
1047 * Authorize deletion of xp->security.
1048 * @xfrm_state_alloc_security:
1049 * @x contains the xfrm_state being added to the Security Association
1050 * Database by the XFRM system.
1051 * @sec_ctx contains the security context information being provided by
1052 * the user-level SA generation program (e.g., setkey or racoon).
1053 * @secid contains the secid from which to take the mls portion of the context.
1054 * Allocate a security structure to the x->security field; the security
1055 * field is initialized to NULL when the xfrm_state is allocated. Set the
1056 * context to correspond to either sec_ctx or polsec, with the mls portion
1057 * taken from secid in the latter case.
1058 * Return 0 if operation was successful (memory to allocate, legal context).
1059 * @xfrm_state_free_security:
1060 * @x contains the xfrm_state.
1061 * Deallocate x->security.
1062 * @xfrm_state_delete_security:
1063 * @x contains the xfrm_state.
1064 * Authorize deletion of x->security.
1065 * @xfrm_policy_lookup:
1066 * @ctx contains the xfrm_sec_ctx for which the access control is being
1068 * @fl_secid contains the flow security label that is used to authorize
1069 * access to the policy xp.
1070 * @dir contains the direction of the flow (input or output).
1071 * Check permission when a flow selects a xfrm_policy for processing
1072 * XFRMs on a packet. The hook is called when selecting either a
1073 * per-socket policy or a generic xfrm policy.
1074 * Return 0 if permission is granted, -ESRCH otherwise, or -errno
1076 * @xfrm_state_pol_flow_match:
1077 * @x contains the state to match.
1078 * @xp contains the policy to check for a match.
1079 * @fl contains the flow to check for a match.
1080 * Return 1 if there is a match.
1081 * @xfrm_decode_session:
1082 * @skb points to skb to decode.
1083 * @secid points to the flow key secid to set.
1084 * @ckall says if all xfrms used should be checked for same secid.
1085 * Return 0 if ckall is zero or all xfrms used have the same secid.
1087 * Security hooks affecting all Key Management operations
1090 * Permit allocation of a key and assign security data. Note that key does
1091 * not have a serial number assigned at this point.
1092 * @key points to the key.
1093 * @flags is the allocation flags
1094 * Return 0 if permission is granted, -ve error otherwise.
1096 * Notification of destruction; free security data.
1097 * @key points to the key.
1100 * See whether a specific operational right is granted to a process on a
1102 * @key_ref refers to the key (key pointer + possession attribute bit).
1103 * @cred points to the credentials to provide the context against which to
1104 * evaluate the security data on the key.
1105 * @perm describes the combination of permissions required of this key.
1106 * Return 1 if permission granted, 0 if permission denied and -ve it the
1107 * normal permissions model should be effected.
1109 * Get a textual representation of the security context attached to a key
1110 * for the purposes of honouring KEYCTL_GETSECURITY. This function
1111 * allocates the storage for the NUL-terminated string and the caller
1113 * @key points to the key to be queried.
1114 * @_buffer points to a pointer that should be set to point to the
1115 * resulting string (if no label or an error occurs).
1116 * Return the length of the string (including terminating NUL) or -ve if
1118 * May also return 0 (and a NULL buffer pointer) if there is no label.
1119 * @key_session_to_parent:
1120 * Forcibly assign the session keyring from a process to its parent
1122 * @cred: Pointer to process's credentials
1123 * @parent_cred: Pointer to parent process's credentials
1124 * @keyring: Proposed new session keyring
1125 * Return 0 if permission is granted, -ve error otherwise.
1127 * Security hooks affecting all System V IPC operations.
1130 * Check permissions for access to IPC
1131 * @ipcp contains the kernel IPC permission structure
1132 * @flag contains the desired (requested) permission set
1133 * Return 0 if permission is granted.
1135 * Get the secid associated with the ipc object.
1136 * @ipcp contains the kernel IPC permission structure.
1137 * @secid contains a pointer to the location where result will be saved.
1138 * In case of failure, @secid will be set to zero.
1140 * Security hooks for individual messages held in System V IPC message queues
1141 * @msg_msg_alloc_security:
1142 * Allocate and attach a security structure to the msg->security field.
1143 * The security field is initialized to NULL when the structure is first
1145 * @msg contains the message structure to be modified.
1146 * Return 0 if operation was successful and permission is granted.
1147 * @msg_msg_free_security:
1148 * Deallocate the security structure for this message.
1149 * @msg contains the message structure to be modified.
1151 * Security hooks for System V IPC Message Queues
1153 * @msg_queue_alloc_security:
1154 * Allocate and attach a security structure to the
1155 * msq->q_perm.security field. The security field is initialized to
1156 * NULL when the structure is first created.
1157 * @msq contains the message queue structure to be modified.
1158 * Return 0 if operation was successful and permission is granted.
1159 * @msg_queue_free_security:
1160 * Deallocate security structure for this message queue.
1161 * @msq contains the message queue structure to be modified.
1162 * @msg_queue_associate:
1163 * Check permission when a message queue is requested through the
1164 * msgget system call. This hook is only called when returning the
1165 * message queue identifier for an existing message queue, not when a
1166 * new message queue is created.
1167 * @msq contains the message queue to act upon.
1168 * @msqflg contains the operation control flags.
1169 * Return 0 if permission is granted.
1170 * @msg_queue_msgctl:
1171 * Check permission when a message control operation specified by @cmd
1172 * is to be performed on the message queue @msq.
1173 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
1174 * @msq contains the message queue to act upon. May be NULL.
1175 * @cmd contains the operation to be performed.
1176 * Return 0 if permission is granted.
1177 * @msg_queue_msgsnd:
1178 * Check permission before a message, @msg, is enqueued on the message
1180 * @msq contains the message queue to send message to.
1181 * @msg contains the message to be enqueued.
1182 * @msqflg contains operational flags.
1183 * Return 0 if permission is granted.
1184 * @msg_queue_msgrcv:
1185 * Check permission before a message, @msg, is removed from the message
1186 * queue, @msq. The @target task structure contains a pointer to the
1187 * process that will be receiving the message (not equal to the current
1188 * process when inline receives are being performed).
1189 * @msq contains the message queue to retrieve message from.
1190 * @msg contains the message destination.
1191 * @target contains the task structure for recipient process.
1192 * @type contains the type of message requested.
1193 * @mode contains the operational flags.
1194 * Return 0 if permission is granted.
1196 * Security hooks for System V Shared Memory Segments
1198 * @shm_alloc_security:
1199 * Allocate and attach a security structure to the shp->shm_perm.security
1200 * field. The security field is initialized to NULL when the structure is
1202 * @shp contains the shared memory structure to be modified.
1203 * Return 0 if operation was successful and permission is granted.
1204 * @shm_free_security:
1205 * Deallocate the security struct for this memory segment.
1206 * @shp contains the shared memory structure to be modified.
1208 * Check permission when a shared memory region is requested through the
1209 * shmget system call. This hook is only called when returning the shared
1210 * memory region identifier for an existing region, not when a new shared
1211 * memory region is created.
1212 * @shp contains the shared memory structure to be modified.
1213 * @shmflg contains the operation control flags.
1214 * Return 0 if permission is granted.
1216 * Check permission when a shared memory control operation specified by
1217 * @cmd is to be performed on the shared memory region @shp.
1218 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1219 * @shp contains shared memory structure to be modified.
1220 * @cmd contains the operation to be performed.
1221 * Return 0 if permission is granted.
1223 * Check permissions prior to allowing the shmat system call to attach the
1224 * shared memory segment @shp to the data segment of the calling process.
1225 * The attaching address is specified by @shmaddr.
1226 * @shp contains the shared memory structure to be modified.
1227 * @shmaddr contains the address to attach memory region to.
1228 * @shmflg contains the operational flags.
1229 * Return 0 if permission is granted.
1231 * Security hooks for System V Semaphores
1233 * @sem_alloc_security:
1234 * Allocate and attach a security structure to the sma->sem_perm.security
1235 * field. The security field is initialized to NULL when the structure is
1237 * @sma contains the semaphore structure
1238 * Return 0 if operation was successful and permission is granted.
1239 * @sem_free_security:
1240 * deallocate security struct for this semaphore
1241 * @sma contains the semaphore structure.
1243 * Check permission when a semaphore is requested through the semget
1244 * system call. This hook is only called when returning the semaphore
1245 * identifier for an existing semaphore, not when a new one must be
1247 * @sma contains the semaphore structure.
1248 * @semflg contains the operation control flags.
1249 * Return 0 if permission is granted.
1251 * Check permission when a semaphore operation specified by @cmd is to be
1252 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
1253 * IPC_INFO or SEM_INFO.
1254 * @sma contains the semaphore structure. May be NULL.
1255 * @cmd contains the operation to be performed.
1256 * Return 0 if permission is granted.
1258 * Check permissions before performing operations on members of the
1259 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1261 * @sma contains the semaphore structure.
1262 * @sops contains the operations to perform.
1263 * @nsops contains the number of operations to perform.
1264 * @alter contains the flag indicating whether changes are to be made.
1265 * Return 0 if permission is granted.
1267 * @ptrace_access_check:
1268 * Check permission before allowing the current process to trace the
1270 * Security modules may also want to perform a process tracing check
1271 * during an execve in the set_security or apply_creds hooks of
1272 * tracing check during an execve in the bprm_set_creds hook of
1273 * binprm_security_ops if the process is being traced and its security
1274 * attributes would be changed by the execve.
1275 * @child contains the task_struct structure for the target process.
1276 * @mode contains the PTRACE_MODE flags indicating the form of access.
1277 * Return 0 if permission is granted.
1279 * Check that the @parent process has sufficient permission to trace the
1280 * current process before allowing the current process to present itself
1281 * to the @parent process for tracing.
1282 * The parent process will still have to undergo the ptrace_access_check
1283 * checks before it is allowed to trace this one.
1284 * @parent contains the task_struct structure for debugger process.
1285 * Return 0 if permission is granted.
1287 * Get the @effective, @inheritable, and @permitted capability sets for
1288 * the @target process. The hook may also perform permission checking to
1289 * determine if the current process is allowed to see the capability sets
1290 * of the @target process.
1291 * @target contains the task_struct structure for target process.
1292 * @effective contains the effective capability set.
1293 * @inheritable contains the inheritable capability set.
1294 * @permitted contains the permitted capability set.
1295 * Return 0 if the capability sets were successfully obtained.
1297 * Set the @effective, @inheritable, and @permitted capability sets for
1298 * the current process.
1299 * @new contains the new credentials structure for target process.
1300 * @old contains the current credentials structure for target process.
1301 * @effective contains the effective capability set.
1302 * @inheritable contains the inheritable capability set.
1303 * @permitted contains the permitted capability set.
1304 * Return 0 and update @new if permission is granted.
1306 * Check whether the @tsk process has the @cap capability in the indicated
1308 * @tsk contains the task_struct for the process.
1309 * @cred contains the credentials to use.
1310 * @cap contains the capability <include/linux/capability.h>.
1311 * @audit: Whether to write an audit message or not
1312 * Return 0 if the capability is granted for @tsk.
1314 * Check permission before enabling or disabling process accounting. If
1315 * accounting is being enabled, then @file refers to the open file used to
1316 * store accounting records. If accounting is being disabled, then @file
1318 * @file contains the file structure for the accounting file (may be NULL).
1319 * Return 0 if permission is granted.
1321 * Check permission before accessing the @table sysctl variable in the
1322 * manner specified by @op.
1323 * @table contains the ctl_table structure for the sysctl variable.
1324 * @op contains the operation (001 = search, 002 = write, 004 = read).
1325 * Return 0 if permission is granted.
1327 * Check permission before accessing the kernel message ring or changing
1328 * logging to the console.
1329 * See the syslog(2) manual page for an explanation of the @type values.
1330 * @type contains the type of action.
1331 * @from_file indicates the context of action (if it came from /proc).
1332 * Return 0 if permission is granted.
1334 * Check permission to change the system time.
1335 * struct timespec and timezone are defined in include/linux/time.h
1336 * @ts contains new time
1337 * @tz contains new timezone
1338 * Return 0 if permission is granted.
1339 * @vm_enough_memory:
1340 * Check permissions for allocating a new virtual mapping.
1341 * @mm contains the mm struct it is being added to.
1342 * @pages contains the number of pages.
1343 * Return 0 if permission is granted.
1346 * Convert secid to security context.
1347 * @secid contains the security ID.
1348 * @secdata contains the pointer that stores the converted security context.
1350 * Convert security context to secid.
1351 * @secid contains the pointer to the generated security ID.
1352 * @secdata contains the security context.
1355 * Release the security context.
1356 * @secdata contains the security context.
1357 * @seclen contains the length of the security context.
1359 * Security hooks for Audit
1362 * Allocate and initialize an LSM audit rule structure.
1363 * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
1364 * @op contains the operator the rule uses.
1365 * @rulestr contains the context where the rule will be applied to.
1366 * @lsmrule contains a pointer to receive the result.
1367 * Return 0 if @lsmrule has been successfully set,
1368 * -EINVAL in case of an invalid rule.
1370 * @audit_rule_known:
1371 * Specifies whether given @rule contains any fields related to current LSM.
1372 * @rule contains the audit rule of interest.
1373 * Return 1 in case of relation found, 0 otherwise.
1375 * @audit_rule_match:
1376 * Determine if given @secid matches a rule previously approved
1377 * by @audit_rule_known.
1378 * @secid contains the security id in question.
1379 * @field contains the field which relates to current LSM.
1380 * @op contains the operator that will be used for matching.
1381 * @rule points to the audit rule that will be checked against.
1382 * @actx points to the audit context associated with the check.
1383 * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
1386 * Deallocate the LSM audit rule structure previously allocated by
1388 * @rule contains the allocated rule
1390 * @inode_notifysecctx:
1391 * Notify the security module of what the security context of an inode
1392 * should be. Initializes the incore security context managed by the
1393 * security module for this inode. Example usage: NFS client invokes
1394 * this hook to initialize the security context in its incore inode to the
1395 * value provided by the server for the file when the server returned the
1396 * file's attributes to the client.
1398 * Must be called with inode->i_mutex locked.
1400 * @inode we wish to set the security context of.
1401 * @ctx contains the string which we wish to set in the inode.
1402 * @ctxlen contains the length of @ctx.
1405 * Change the security context of an inode. Updates the
1406 * incore security context managed by the security module and invokes the
1407 * fs code as needed (via __vfs_setxattr_noperm) to update any backing
1408 * xattrs that represent the context. Example usage: NFS server invokes
1409 * this hook to change the security context in its incore inode and on the
1410 * backing filesystem to a value provided by the client on a SETATTR
1413 * Must be called with inode->i_mutex locked.
1415 * @dentry contains the inode we wish to set the security context of.
1416 * @ctx contains the string which we wish to set in the inode.
1417 * @ctxlen contains the length of @ctx.
1420 * Returns a string containing all relavent security context information
1422 * @inode we wish to set the security context of.
1423 * @ctx is a pointer in which to place the allocated security context.
1424 * @ctxlen points to the place to put the length of @ctx.
1425 * This is the main security structure.
1427 struct security_operations {
1428 char name[SECURITY_NAME_MAX + 1];
1430 int (*ptrace_access_check) (struct task_struct *child, unsigned int mode);
1431 int (*ptrace_traceme) (struct task_struct *parent);
1432 int (*capget) (struct task_struct *target,
1433 kernel_cap_t *effective,
1434 kernel_cap_t *inheritable, kernel_cap_t *permitted);
1435 int (*capset) (struct cred *new,
1436 const struct cred *old,
1437 const kernel_cap_t *effective,
1438 const kernel_cap_t *inheritable,
1439 const kernel_cap_t *permitted);
1440 int (*capable) (struct task_struct *tsk, const struct cred *cred,
1441 int cap, int audit);
1442 int (*acct) (struct file *file);
1443 int (*sysctl) (struct ctl_table *table, int op);
1444 int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
1445 int (*quota_on) (struct dentry *dentry);
1446 int (*syslog) (int type, bool from_file);
1447 int (*settime) (struct timespec *ts, struct timezone *tz);
1448 int (*vm_enough_memory) (struct mm_struct *mm, long pages);
1450 int (*bprm_set_creds) (struct linux_binprm *bprm);
1451 int (*bprm_check_security) (struct linux_binprm *bprm);
1452 int (*bprm_secureexec) (struct linux_binprm *bprm);
1453 void (*bprm_committing_creds) (struct linux_binprm *bprm);
1454 void (*bprm_committed_creds) (struct linux_binprm *bprm);
1456 int (*sb_alloc_security) (struct super_block *sb);
1457 void (*sb_free_security) (struct super_block *sb);
1458 int (*sb_copy_data) (char *orig, char *copy);
1459 int (*sb_kern_mount) (struct super_block *sb, int flags, void *data);
1460 int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
1461 int (*sb_statfs) (struct dentry *dentry);
1462 int (*sb_mount) (char *dev_name, struct path *path,
1463 char *type, unsigned long flags, void *data);
1464 int (*sb_umount) (struct vfsmount *mnt, int flags);
1465 void (*sb_post_addmount) (struct vfsmount *mnt,
1466 struct path *mountpoint);
1467 int (*sb_pivotroot) (struct path *old_path,
1468 struct path *new_path);
1469 void (*sb_post_pivotroot) (struct path *old_path,
1470 struct path *new_path);
1471 int (*sb_set_mnt_opts) (struct super_block *sb,
1472 struct security_mnt_opts *opts);
1473 void (*sb_clone_mnt_opts) (const struct super_block *oldsb,
1474 struct super_block *newsb);
1475 int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
1477 #ifdef CONFIG_SECURITY_PATH
1478 int (*path_unlink) (struct path *dir, struct dentry *dentry);
1479 int (*path_mkdir) (struct path *dir, struct dentry *dentry, int mode);
1480 int (*path_rmdir) (struct path *dir, struct dentry *dentry);
1481 int (*path_mknod) (struct path *dir, struct dentry *dentry, int mode,
1483 int (*path_truncate) (struct path *path, loff_t length,
1484 unsigned int time_attrs);
1485 int (*path_symlink) (struct path *dir, struct dentry *dentry,
1486 const char *old_name);
1487 int (*path_link) (struct dentry *old_dentry, struct path *new_dir,
1488 struct dentry *new_dentry);
1489 int (*path_rename) (struct path *old_dir, struct dentry *old_dentry,
1490 struct path *new_dir, struct dentry *new_dentry);
1491 int (*path_chmod) (struct dentry *dentry, struct vfsmount *mnt,
1493 int (*path_chown) (struct path *path, uid_t uid, gid_t gid);
1494 int (*path_chroot) (struct path *path);
1497 int (*inode_alloc_security) (struct inode *inode);
1498 void (*inode_free_security) (struct inode *inode);
1499 int (*inode_init_security) (struct inode *inode, struct inode *dir,
1500 char **name, void **value, size_t *len);
1501 int (*inode_create) (struct inode *dir,
1502 struct dentry *dentry, int mode);
1503 int (*inode_link) (struct dentry *old_dentry,
1504 struct inode *dir, struct dentry *new_dentry);
1505 int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
1506 int (*inode_symlink) (struct inode *dir,
1507 struct dentry *dentry, const char *old_name);
1508 int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, int mode);
1509 int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
1510 int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
1511 int mode, dev_t dev);
1512 int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
1513 struct inode *new_dir, struct dentry *new_dentry);
1514 int (*inode_readlink) (struct dentry *dentry);
1515 int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
1516 int (*inode_permission) (struct inode *inode, int mask);
1517 int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
1518 int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
1519 void (*inode_delete) (struct inode *inode);
1520 int (*inode_setxattr) (struct dentry *dentry, const char *name,
1521 const void *value, size_t size, int flags);
1522 void (*inode_post_setxattr) (struct dentry *dentry, const char *name,
1523 const void *value, size_t size, int flags);
1524 int (*inode_getxattr) (struct dentry *dentry, const char *name);
1525 int (*inode_listxattr) (struct dentry *dentry);
1526 int (*inode_removexattr) (struct dentry *dentry, const char *name);
1527 int (*inode_need_killpriv) (struct dentry *dentry);
1528 int (*inode_killpriv) (struct dentry *dentry);
1529 int (*inode_getsecurity) (const struct inode *inode, const char *name, void **buffer, bool alloc);
1530 int (*inode_setsecurity) (struct inode *inode, const char *name, const void *value, size_t size, int flags);
1531 int (*inode_listsecurity) (struct inode *inode, char *buffer, size_t buffer_size);
1532 void (*inode_getsecid) (const struct inode *inode, u32 *secid);
1534 int (*file_permission) (struct file *file, int mask);
1535 int (*file_alloc_security) (struct file *file);
1536 void (*file_free_security) (struct file *file);
1537 int (*file_ioctl) (struct file *file, unsigned int cmd,
1539 int (*file_mmap) (struct file *file,
1540 unsigned long reqprot, unsigned long prot,
1541 unsigned long flags, unsigned long addr,
1542 unsigned long addr_only);
1543 int (*file_mprotect) (struct vm_area_struct *vma,
1544 unsigned long reqprot,
1545 unsigned long prot);
1546 int (*file_lock) (struct file *file, unsigned int cmd);
1547 int (*file_fcntl) (struct file *file, unsigned int cmd,
1549 int (*file_set_fowner) (struct file *file);
1550 int (*file_send_sigiotask) (struct task_struct *tsk,
1551 struct fown_struct *fown, int sig);
1552 int (*file_receive) (struct file *file);
1553 int (*dentry_open) (struct file *file, const struct cred *cred);
1555 int (*task_create) (unsigned long clone_flags);
1556 int (*cred_alloc_blank) (struct cred *cred, gfp_t gfp);
1557 void (*cred_free) (struct cred *cred);
1558 int (*cred_prepare)(struct cred *new, const struct cred *old,
1560 void (*cred_commit)(struct cred *new, const struct cred *old);
1561 void (*cred_transfer)(struct cred *new, const struct cred *old);
1562 int (*kernel_act_as)(struct cred *new, u32 secid);
1563 int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
1564 int (*kernel_module_request)(char *kmod_name);
1565 int (*task_setuid) (uid_t id0, uid_t id1, uid_t id2, int flags);
1566 int (*task_fix_setuid) (struct cred *new, const struct cred *old,
1568 int (*task_setgid) (gid_t id0, gid_t id1, gid_t id2, int flags);
1569 int (*task_setpgid) (struct task_struct *p, pid_t pgid);
1570 int (*task_getpgid) (struct task_struct *p);
1571 int (*task_getsid) (struct task_struct *p);
1572 void (*task_getsecid) (struct task_struct *p, u32 *secid);
1573 int (*task_setgroups) (struct group_info *group_info);
1574 int (*task_setnice) (struct task_struct *p, int nice);
1575 int (*task_setioprio) (struct task_struct *p, int ioprio);
1576 int (*task_getioprio) (struct task_struct *p);
1577 int (*task_setrlimit) (unsigned int resource, struct rlimit *new_rlim);
1578 int (*task_setscheduler) (struct task_struct *p, int policy,
1579 struct sched_param *lp);
1580 int (*task_getscheduler) (struct task_struct *p);
1581 int (*task_movememory) (struct task_struct *p);
1582 int (*task_kill) (struct task_struct *p,
1583 struct siginfo *info, int sig, u32 secid);
1584 int (*task_wait) (struct task_struct *p);
1585 int (*task_prctl) (int option, unsigned long arg2,
1586 unsigned long arg3, unsigned long arg4,
1587 unsigned long arg5);
1588 void (*task_to_inode) (struct task_struct *p, struct inode *inode);
1590 int (*ipc_permission) (struct kern_ipc_perm *ipcp, short flag);
1591 void (*ipc_getsecid) (struct kern_ipc_perm *ipcp, u32 *secid);
1593 int (*msg_msg_alloc_security) (struct msg_msg *msg);
1594 void (*msg_msg_free_security) (struct msg_msg *msg);
1596 int (*msg_queue_alloc_security) (struct msg_queue *msq);
1597 void (*msg_queue_free_security) (struct msg_queue *msq);
1598 int (*msg_queue_associate) (struct msg_queue *msq, int msqflg);
1599 int (*msg_queue_msgctl) (struct msg_queue *msq, int cmd);
1600 int (*msg_queue_msgsnd) (struct msg_queue *msq,
1601 struct msg_msg *msg, int msqflg);
1602 int (*msg_queue_msgrcv) (struct msg_queue *msq,
1603 struct msg_msg *msg,
1604 struct task_struct *target,
1605 long type, int mode);
1607 int (*shm_alloc_security) (struct shmid_kernel *shp);
1608 void (*shm_free_security) (struct shmid_kernel *shp);
1609 int (*shm_associate) (struct shmid_kernel *shp, int shmflg);
1610 int (*shm_shmctl) (struct shmid_kernel *shp, int cmd);
1611 int (*shm_shmat) (struct shmid_kernel *shp,
1612 char __user *shmaddr, int shmflg);
1614 int (*sem_alloc_security) (struct sem_array *sma);
1615 void (*sem_free_security) (struct sem_array *sma);
1616 int (*sem_associate) (struct sem_array *sma, int semflg);
1617 int (*sem_semctl) (struct sem_array *sma, int cmd);
1618 int (*sem_semop) (struct sem_array *sma,
1619 struct sembuf *sops, unsigned nsops, int alter);
1621 int (*netlink_send) (struct sock *sk, struct sk_buff *skb);
1622 int (*netlink_recv) (struct sk_buff *skb, int cap);
1624 void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1626 int (*getprocattr) (struct task_struct *p, char *name, char **value);
1627 int (*setprocattr) (struct task_struct *p, char *name, void *value, size_t size);
1628 int (*secid_to_secctx) (u32 secid, char **secdata, u32 *seclen);
1629 int (*secctx_to_secid) (const char *secdata, u32 seclen, u32 *secid);
1630 void (*release_secctx) (char *secdata, u32 seclen);
1632 int (*inode_notifysecctx)(struct inode *inode, void *ctx, u32 ctxlen);
1633 int (*inode_setsecctx)(struct dentry *dentry, void *ctx, u32 ctxlen);
1634 int (*inode_getsecctx)(struct inode *inode, void **ctx, u32 *ctxlen);
1636 #ifdef CONFIG_SECURITY_NETWORK
1637 int (*unix_stream_connect) (struct socket *sock,
1638 struct socket *other, struct sock *newsk);
1639 int (*unix_may_send) (struct socket *sock, struct socket *other);
1641 int (*socket_create) (int family, int type, int protocol, int kern);
1642 int (*socket_post_create) (struct socket *sock, int family,
1643 int type, int protocol, int kern);
1644 int (*socket_bind) (struct socket *sock,
1645 struct sockaddr *address, int addrlen);
1646 int (*socket_connect) (struct socket *sock,
1647 struct sockaddr *address, int addrlen);
1648 int (*socket_listen) (struct socket *sock, int backlog);
1649 int (*socket_accept) (struct socket *sock, struct socket *newsock);
1650 int (*socket_sendmsg) (struct socket *sock,
1651 struct msghdr *msg, int size);
1652 int (*socket_recvmsg) (struct socket *sock,
1653 struct msghdr *msg, int size, int flags);
1654 int (*socket_getsockname) (struct socket *sock);
1655 int (*socket_getpeername) (struct socket *sock);
1656 int (*socket_getsockopt) (struct socket *sock, int level, int optname);
1657 int (*socket_setsockopt) (struct socket *sock, int level, int optname);
1658 int (*socket_shutdown) (struct socket *sock, int how);
1659 int (*socket_sock_rcv_skb) (struct sock *sk, struct sk_buff *skb);
1660 int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
1661 int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
1662 int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
1663 void (*sk_free_security) (struct sock *sk);
1664 void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
1665 void (*sk_getsecid) (struct sock *sk, u32 *secid);
1666 void (*sock_graft) (struct sock *sk, struct socket *parent);
1667 int (*inet_conn_request) (struct sock *sk, struct sk_buff *skb,
1668 struct request_sock *req);
1669 void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req);
1670 void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb);
1671 void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
1672 int (*tun_dev_create)(void);
1673 void (*tun_dev_post_create)(struct sock *sk);
1674 int (*tun_dev_attach)(struct sock *sk);
1675 #endif /* CONFIG_SECURITY_NETWORK */
1677 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1678 int (*xfrm_policy_alloc_security) (struct xfrm_sec_ctx **ctxp,
1679 struct xfrm_user_sec_ctx *sec_ctx);
1680 int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
1681 void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
1682 int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
1683 int (*xfrm_state_alloc_security) (struct xfrm_state *x,
1684 struct xfrm_user_sec_ctx *sec_ctx,
1686 void (*xfrm_state_free_security) (struct xfrm_state *x);
1687 int (*xfrm_state_delete_security) (struct xfrm_state *x);
1688 int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1689 int (*xfrm_state_pol_flow_match) (struct xfrm_state *x,
1690 struct xfrm_policy *xp,
1692 int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall);
1693 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1695 /* key management security hooks */
1697 int (*key_alloc) (struct key *key, const struct cred *cred, unsigned long flags);
1698 void (*key_free) (struct key *key);
1699 int (*key_permission) (key_ref_t key_ref,
1700 const struct cred *cred,
1702 int (*key_getsecurity)(struct key *key, char **_buffer);
1703 int (*key_session_to_parent)(const struct cred *cred,
1704 const struct cred *parent_cred,
1706 #endif /* CONFIG_KEYS */
1709 int (*audit_rule_init) (u32 field, u32 op, char *rulestr, void **lsmrule);
1710 int (*audit_rule_known) (struct audit_krule *krule);
1711 int (*audit_rule_match) (u32 secid, u32 field, u32 op, void *lsmrule,
1712 struct audit_context *actx);
1713 void (*audit_rule_free) (void *lsmrule);
1714 #endif /* CONFIG_AUDIT */
1718 extern int security_init(void);
1719 extern int security_module_enable(struct security_operations *ops);
1720 extern int register_security(struct security_operations *ops);
1722 /* Security operations */
1723 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
1724 int security_ptrace_traceme(struct task_struct *parent);
1725 int security_capget(struct task_struct *target,
1726 kernel_cap_t *effective,
1727 kernel_cap_t *inheritable,
1728 kernel_cap_t *permitted);
1729 int security_capset(struct cred *new, const struct cred *old,
1730 const kernel_cap_t *effective,
1731 const kernel_cap_t *inheritable,
1732 const kernel_cap_t *permitted);
1733 int security_capable(int cap);
1734 int security_real_capable(struct task_struct *tsk, int cap);
1735 int security_real_capable_noaudit(struct task_struct *tsk, int cap);
1736 int security_acct(struct file *file);
1737 int security_sysctl(struct ctl_table *table, int op);
1738 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
1739 int security_quota_on(struct dentry *dentry);
1740 int security_syslog(int type, bool from_file);
1741 int security_settime(struct timespec *ts, struct timezone *tz);
1742 int security_vm_enough_memory(long pages);
1743 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
1744 int security_vm_enough_memory_kern(long pages);
1745 int security_bprm_set_creds(struct linux_binprm *bprm);
1746 int security_bprm_check(struct linux_binprm *bprm);
1747 void security_bprm_committing_creds(struct linux_binprm *bprm);
1748 void security_bprm_committed_creds(struct linux_binprm *bprm);
1749 int security_bprm_secureexec(struct linux_binprm *bprm);
1750 int security_sb_alloc(struct super_block *sb);
1751 void security_sb_free(struct super_block *sb);
1752 int security_sb_copy_data(char *orig, char *copy);
1753 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
1754 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
1755 int security_sb_statfs(struct dentry *dentry);
1756 int security_sb_mount(char *dev_name, struct path *path,
1757 char *type, unsigned long flags, void *data);
1758 int security_sb_umount(struct vfsmount *mnt, int flags);
1759 void security_sb_post_addmount(struct vfsmount *mnt, struct path *mountpoint);
1760 int security_sb_pivotroot(struct path *old_path, struct path *new_path);
1761 void security_sb_post_pivotroot(struct path *old_path, struct path *new_path);
1762 int security_sb_set_mnt_opts(struct super_block *sb, struct security_mnt_opts *opts);
1763 void security_sb_clone_mnt_opts(const struct super_block *oldsb,
1764 struct super_block *newsb);
1765 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
1767 int security_inode_alloc(struct inode *inode);
1768 void security_inode_free(struct inode *inode);
1769 int security_inode_init_security(struct inode *inode, struct inode *dir,
1770 char **name, void **value, size_t *len);
1771 int security_inode_create(struct inode *dir, struct dentry *dentry, int 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, int mode);
1778 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
1779 int security_inode_mknod(struct inode *dir, struct dentry *dentry, int 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 void security_inode_delete(struct inode *inode);
1788 int security_inode_setxattr(struct dentry *dentry, const char *name,
1789 const void *value, size_t size, int flags);
1790 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1791 const void *value, size_t size, int flags);
1792 int security_inode_getxattr(struct dentry *dentry, const char *name);
1793 int security_inode_listxattr(struct dentry *dentry);
1794 int security_inode_removexattr(struct dentry *dentry, const char *name);
1795 int security_inode_need_killpriv(struct dentry *dentry);
1796 int security_inode_killpriv(struct dentry *dentry);
1797 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
1798 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1799 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
1800 void security_inode_getsecid(const struct inode *inode, u32 *secid);
1801 int security_file_permission(struct file *file, int mask);
1802 int security_file_alloc(struct file *file);
1803 void security_file_free(struct file *file);
1804 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
1805 int security_file_mmap(struct file *file, unsigned long reqprot,
1806 unsigned long prot, unsigned long flags,
1807 unsigned long addr, unsigned long addr_only);
1808 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1809 unsigned long prot);
1810 int security_file_lock(struct file *file, unsigned int cmd);
1811 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
1812 int security_file_set_fowner(struct file *file);
1813 int security_file_send_sigiotask(struct task_struct *tsk,
1814 struct fown_struct *fown, int sig);
1815 int security_file_receive(struct file *file);
1816 int security_dentry_open(struct file *file, const struct cred *cred);
1817 int security_task_create(unsigned long clone_flags);
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_commit_creds(struct cred *new, const struct cred *old);
1822 void security_transfer_creds(struct cred *new, const struct cred *old);
1823 int security_kernel_act_as(struct cred *new, u32 secid);
1824 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
1825 int security_kernel_module_request(char *kmod_name);
1826 int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags);
1827 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1829 int security_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags);
1830 int security_task_setpgid(struct task_struct *p, pid_t pgid);
1831 int security_task_getpgid(struct task_struct *p);
1832 int security_task_getsid(struct task_struct *p);
1833 void security_task_getsecid(struct task_struct *p, u32 *secid);
1834 int security_task_setgroups(struct group_info *group_info);
1835 int security_task_setnice(struct task_struct *p, int nice);
1836 int security_task_setioprio(struct task_struct *p, int ioprio);
1837 int security_task_getioprio(struct task_struct *p);
1838 int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim);
1839 int security_task_setscheduler(struct task_struct *p,
1840 int policy, struct sched_param *lp);
1841 int security_task_getscheduler(struct task_struct *p);
1842 int security_task_movememory(struct task_struct *p);
1843 int security_task_kill(struct task_struct *p, struct siginfo *info,
1844 int sig, u32 secid);
1845 int security_task_wait(struct task_struct *p);
1846 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1847 unsigned long arg4, unsigned long arg5);
1848 void security_task_to_inode(struct task_struct *p, struct inode *inode);
1849 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
1850 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
1851 int security_msg_msg_alloc(struct msg_msg *msg);
1852 void security_msg_msg_free(struct msg_msg *msg);
1853 int security_msg_queue_alloc(struct msg_queue *msq);
1854 void security_msg_queue_free(struct msg_queue *msq);
1855 int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
1856 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
1857 int security_msg_queue_msgsnd(struct msg_queue *msq,
1858 struct msg_msg *msg, int msqflg);
1859 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1860 struct task_struct *target, long type, int mode);
1861 int security_shm_alloc(struct shmid_kernel *shp);
1862 void security_shm_free(struct shmid_kernel *shp);
1863 int security_shm_associate(struct shmid_kernel *shp, int shmflg);
1864 int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
1865 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
1866 int security_sem_alloc(struct sem_array *sma);
1867 void security_sem_free(struct sem_array *sma);
1868 int security_sem_associate(struct sem_array *sma, int semflg);
1869 int security_sem_semctl(struct sem_array *sma, int cmd);
1870 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1871 unsigned nsops, int alter);
1872 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
1873 int security_getprocattr(struct task_struct *p, char *name, char **value);
1874 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
1875 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
1876 int security_netlink_recv(struct sk_buff *skb, int cap);
1877 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
1878 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
1879 void security_release_secctx(char *secdata, u32 seclen);
1881 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
1882 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
1883 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
1884 #else /* CONFIG_SECURITY */
1885 struct security_mnt_opts {
1888 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
1892 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
1897 * This is the default capabilities functionality. Most of these functions
1898 * are just stubbed out, but a few must call the proper capable code.
1901 static inline int security_init(void)
1906 static inline int security_ptrace_access_check(struct task_struct *child,
1909 return cap_ptrace_access_check(child, mode);
1912 static inline int security_ptrace_traceme(struct task_struct *parent)
1914 return cap_ptrace_traceme(parent);
1917 static inline int security_capget(struct task_struct *target,
1918 kernel_cap_t *effective,
1919 kernel_cap_t *inheritable,
1920 kernel_cap_t *permitted)
1922 return cap_capget(target, effective, inheritable, permitted);
1925 static inline int security_capset(struct cred *new,
1926 const struct cred *old,
1927 const kernel_cap_t *effective,
1928 const kernel_cap_t *inheritable,
1929 const kernel_cap_t *permitted)
1931 return cap_capset(new, old, effective, inheritable, permitted);
1934 static inline int security_capable(int cap)
1936 return cap_capable(current, current_cred(), cap, SECURITY_CAP_AUDIT);
1939 static inline int security_real_capable(struct task_struct *tsk, int cap)
1944 ret = cap_capable(tsk, __task_cred(tsk), cap, SECURITY_CAP_AUDIT);
1950 int security_real_capable_noaudit(struct task_struct *tsk, int cap)
1955 ret = cap_capable(tsk, __task_cred(tsk), cap,
1956 SECURITY_CAP_NOAUDIT);
1961 static inline int security_acct(struct file *file)
1966 static inline int security_sysctl(struct ctl_table *table, int op)
1971 static inline int security_quotactl(int cmds, int type, int id,
1972 struct super_block *sb)
1977 static inline int security_quota_on(struct dentry *dentry)
1982 static inline int security_syslog(int type, bool from_file)
1984 return cap_syslog(type, from_file);
1987 static inline int security_settime(struct timespec *ts, struct timezone *tz)
1989 return cap_settime(ts, tz);
1992 static inline int security_vm_enough_memory(long pages)
1994 WARN_ON(current->mm == NULL);
1995 return cap_vm_enough_memory(current->mm, pages);
1998 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
2000 WARN_ON(mm == NULL);
2001 return cap_vm_enough_memory(mm, pages);
2004 static inline int security_vm_enough_memory_kern(long pages)
2006 /* If current->mm is a kernel thread then we will pass NULL,
2007 for this specific case that is fine */
2008 return cap_vm_enough_memory(current->mm, pages);
2011 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
2013 return cap_bprm_set_creds(bprm);
2016 static inline int security_bprm_check(struct linux_binprm *bprm)
2021 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
2025 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
2029 static inline int security_bprm_secureexec(struct linux_binprm *bprm)
2031 return cap_bprm_secureexec(bprm);
2034 static inline int security_sb_alloc(struct super_block *sb)
2039 static inline void security_sb_free(struct super_block *sb)
2042 static inline int security_sb_copy_data(char *orig, char *copy)
2047 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
2052 static inline int security_sb_show_options(struct seq_file *m,
2053 struct super_block *sb)
2058 static inline int security_sb_statfs(struct dentry *dentry)
2063 static inline int security_sb_mount(char *dev_name, struct path *path,
2064 char *type, unsigned long flags,
2070 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
2075 static inline void security_sb_post_addmount(struct vfsmount *mnt,
2076 struct path *mountpoint)
2079 static inline int security_sb_pivotroot(struct path *old_path,
2080 struct path *new_path)
2085 static inline void security_sb_post_pivotroot(struct path *old_path,
2086 struct path *new_path)
2089 static inline int security_sb_set_mnt_opts(struct super_block *sb,
2090 struct security_mnt_opts *opts)
2095 static inline void security_sb_clone_mnt_opts(const struct super_block *oldsb,
2096 struct super_block *newsb)
2099 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
2104 static inline int security_inode_alloc(struct inode *inode)
2109 static inline void security_inode_free(struct inode *inode)
2112 static inline int security_inode_init_security(struct inode *inode,
2121 static inline int security_inode_create(struct inode *dir,
2122 struct dentry *dentry,
2128 static inline int security_inode_link(struct dentry *old_dentry,
2130 struct dentry *new_dentry)
2135 static inline int security_inode_unlink(struct inode *dir,
2136 struct dentry *dentry)
2141 static inline int security_inode_symlink(struct inode *dir,
2142 struct dentry *dentry,
2143 const char *old_name)
2148 static inline int security_inode_mkdir(struct inode *dir,
2149 struct dentry *dentry,
2155 static inline int security_inode_rmdir(struct inode *dir,
2156 struct dentry *dentry)
2161 static inline int security_inode_mknod(struct inode *dir,
2162 struct dentry *dentry,
2163 int mode, dev_t dev)
2168 static inline int security_inode_rename(struct inode *old_dir,
2169 struct dentry *old_dentry,
2170 struct inode *new_dir,
2171 struct dentry *new_dentry)
2176 static inline int security_inode_readlink(struct dentry *dentry)
2181 static inline int security_inode_follow_link(struct dentry *dentry,
2182 struct nameidata *nd)
2187 static inline int security_inode_permission(struct inode *inode, int mask)
2192 static inline int security_inode_setattr(struct dentry *dentry,
2198 static inline int security_inode_getattr(struct vfsmount *mnt,
2199 struct dentry *dentry)
2204 static inline void security_inode_delete(struct inode *inode)
2207 static inline int security_inode_setxattr(struct dentry *dentry,
2208 const char *name, const void *value, size_t size, int flags)
2210 return cap_inode_setxattr(dentry, name, value, size, flags);
2213 static inline void security_inode_post_setxattr(struct dentry *dentry,
2214 const char *name, const void *value, size_t size, int flags)
2217 static inline int security_inode_getxattr(struct dentry *dentry,
2223 static inline int security_inode_listxattr(struct dentry *dentry)
2228 static inline int security_inode_removexattr(struct dentry *dentry,
2231 return cap_inode_removexattr(dentry, name);
2234 static inline int security_inode_need_killpriv(struct dentry *dentry)
2236 return cap_inode_need_killpriv(dentry);
2239 static inline int security_inode_killpriv(struct dentry *dentry)
2241 return cap_inode_killpriv(dentry);
2244 static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
2249 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
2254 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
2259 static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
2264 static inline int security_file_permission(struct file *file, int mask)
2269 static inline int security_file_alloc(struct file *file)
2274 static inline void security_file_free(struct file *file)
2277 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
2283 static inline int security_file_mmap(struct file *file, unsigned long reqprot,
2285 unsigned long flags,
2287 unsigned long addr_only)
2289 return cap_file_mmap(file, reqprot, prot, flags, addr, addr_only);
2292 static inline int security_file_mprotect(struct vm_area_struct *vma,
2293 unsigned long reqprot,
2299 static inline int security_file_lock(struct file *file, unsigned int cmd)
2304 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
2310 static inline int security_file_set_fowner(struct file *file)
2315 static inline int security_file_send_sigiotask(struct task_struct *tsk,
2316 struct fown_struct *fown,
2322 static inline int security_file_receive(struct file *file)
2327 static inline int security_dentry_open(struct file *file,
2328 const struct cred *cred)
2333 static inline int security_task_create(unsigned long clone_flags)
2338 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
2343 static inline void security_cred_free(struct cred *cred)
2346 static inline int security_prepare_creds(struct cred *new,
2347 const struct cred *old,
2353 static inline void security_commit_creds(struct cred *new,
2354 const struct cred *old)
2358 static inline void security_transfer_creds(struct cred *new,
2359 const struct cred *old)
2363 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
2368 static inline int security_kernel_create_files_as(struct cred *cred,
2369 struct inode *inode)
2374 static inline int security_kernel_module_request(char *kmod_name)
2379 static inline int security_task_setuid(uid_t id0, uid_t id1, uid_t id2,
2385 static inline int security_task_fix_setuid(struct cred *new,
2386 const struct cred *old,
2389 return cap_task_fix_setuid(new, old, flags);
2392 static inline int security_task_setgid(gid_t id0, gid_t id1, gid_t id2,
2398 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
2403 static inline int security_task_getpgid(struct task_struct *p)
2408 static inline int security_task_getsid(struct task_struct *p)
2413 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
2418 static inline int security_task_setgroups(struct group_info *group_info)
2423 static inline int security_task_setnice(struct task_struct *p, int nice)
2425 return cap_task_setnice(p, nice);
2428 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
2430 return cap_task_setioprio(p, ioprio);
2433 static inline int security_task_getioprio(struct task_struct *p)
2438 static inline int security_task_setrlimit(unsigned int resource,
2439 struct rlimit *new_rlim)
2444 static inline int security_task_setscheduler(struct task_struct *p,
2446 struct sched_param *lp)
2448 return cap_task_setscheduler(p, policy, lp);
2451 static inline int security_task_getscheduler(struct task_struct *p)
2456 static inline int security_task_movememory(struct task_struct *p)
2461 static inline int security_task_kill(struct task_struct *p,
2462 struct siginfo *info, int sig,
2468 static inline int security_task_wait(struct task_struct *p)
2473 static inline int security_task_prctl(int option, unsigned long arg2,
2478 return cap_task_prctl(option, arg2, arg3, arg3, arg5);
2481 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
2484 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
2490 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
2495 static inline int security_msg_msg_alloc(struct msg_msg *msg)
2500 static inline void security_msg_msg_free(struct msg_msg *msg)
2503 static inline int security_msg_queue_alloc(struct msg_queue *msq)
2508 static inline void security_msg_queue_free(struct msg_queue *msq)
2511 static inline int security_msg_queue_associate(struct msg_queue *msq,
2517 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
2522 static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
2523 struct msg_msg *msg, int msqflg)
2528 static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
2529 struct msg_msg *msg,
2530 struct task_struct *target,
2531 long type, int mode)
2536 static inline int security_shm_alloc(struct shmid_kernel *shp)
2541 static inline void security_shm_free(struct shmid_kernel *shp)
2544 static inline int security_shm_associate(struct shmid_kernel *shp,
2550 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
2555 static inline int security_shm_shmat(struct shmid_kernel *shp,
2556 char __user *shmaddr, int shmflg)
2561 static inline int security_sem_alloc(struct sem_array *sma)
2566 static inline void security_sem_free(struct sem_array *sma)
2569 static inline int security_sem_associate(struct sem_array *sma, int semflg)
2574 static inline int security_sem_semctl(struct sem_array *sma, int cmd)
2579 static inline int security_sem_semop(struct sem_array *sma,
2580 struct sembuf *sops, unsigned nsops,
2586 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
2589 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
2594 static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2599 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
2601 return cap_netlink_send(sk, skb);
2604 static inline int security_netlink_recv(struct sk_buff *skb, int cap)
2606 return cap_netlink_recv(skb, cap);
2609 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2614 static inline int security_secctx_to_secid(const char *secdata,
2621 static inline void security_release_secctx(char *secdata, u32 seclen)
2625 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
2629 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
2633 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
2637 #endif /* CONFIG_SECURITY */
2639 #ifdef CONFIG_SECURITY_NETWORK
2641 int security_unix_stream_connect(struct socket *sock, struct socket *other,
2642 struct sock *newsk);
2643 int security_unix_may_send(struct socket *sock, struct socket *other);
2644 int security_socket_create(int family, int type, int protocol, int kern);
2645 int security_socket_post_create(struct socket *sock, int family,
2646 int type, int protocol, int kern);
2647 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
2648 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
2649 int security_socket_listen(struct socket *sock, int backlog);
2650 int security_socket_accept(struct socket *sock, struct socket *newsock);
2651 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
2652 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2653 int size, int flags);
2654 int security_socket_getsockname(struct socket *sock);
2655 int security_socket_getpeername(struct socket *sock);
2656 int security_socket_getsockopt(struct socket *sock, int level, int optname);
2657 int security_socket_setsockopt(struct socket *sock, int level, int optname);
2658 int security_socket_shutdown(struct socket *sock, int how);
2659 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
2660 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2661 int __user *optlen, unsigned len);
2662 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
2663 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
2664 void security_sk_free(struct sock *sk);
2665 void security_sk_clone(const struct sock *sk, struct sock *newsk);
2666 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
2667 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
2668 void security_sock_graft(struct sock*sk, struct socket *parent);
2669 int security_inet_conn_request(struct sock *sk,
2670 struct sk_buff *skb, struct request_sock *req);
2671 void security_inet_csk_clone(struct sock *newsk,
2672 const struct request_sock *req);
2673 void security_inet_conn_established(struct sock *sk,
2674 struct sk_buff *skb);
2675 int security_tun_dev_create(void);
2676 void security_tun_dev_post_create(struct sock *sk);
2677 int security_tun_dev_attach(struct sock *sk);
2679 #else /* CONFIG_SECURITY_NETWORK */
2680 static inline int security_unix_stream_connect(struct socket *sock,
2681 struct socket *other,
2687 static inline int security_unix_may_send(struct socket *sock,
2688 struct socket *other)
2693 static inline int security_socket_create(int family, int type,
2694 int protocol, int kern)
2699 static inline int security_socket_post_create(struct socket *sock,
2702 int protocol, int kern)
2707 static inline int security_socket_bind(struct socket *sock,
2708 struct sockaddr *address,
2714 static inline int security_socket_connect(struct socket *sock,
2715 struct sockaddr *address,
2721 static inline int security_socket_listen(struct socket *sock, int backlog)
2726 static inline int security_socket_accept(struct socket *sock,
2727 struct socket *newsock)
2732 static inline int security_socket_sendmsg(struct socket *sock,
2733 struct msghdr *msg, int size)
2738 static inline int security_socket_recvmsg(struct socket *sock,
2739 struct msghdr *msg, int size,
2745 static inline int security_socket_getsockname(struct socket *sock)
2750 static inline int security_socket_getpeername(struct socket *sock)
2755 static inline int security_socket_getsockopt(struct socket *sock,
2756 int level, int optname)
2761 static inline int security_socket_setsockopt(struct socket *sock,
2762 int level, int optname)
2767 static inline int security_socket_shutdown(struct socket *sock, int how)
2771 static inline int security_sock_rcv_skb(struct sock *sk,
2772 struct sk_buff *skb)
2777 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2778 int __user *optlen, unsigned len)
2780 return -ENOPROTOOPT;
2783 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
2785 return -ENOPROTOOPT;
2788 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2793 static inline void security_sk_free(struct sock *sk)
2797 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
2801 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
2805 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2809 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
2813 static inline int security_inet_conn_request(struct sock *sk,
2814 struct sk_buff *skb, struct request_sock *req)
2819 static inline void security_inet_csk_clone(struct sock *newsk,
2820 const struct request_sock *req)
2824 static inline void security_inet_conn_established(struct sock *sk,
2825 struct sk_buff *skb)
2829 static inline int security_tun_dev_create(void)
2834 static inline void security_tun_dev_post_create(struct sock *sk)
2838 static inline int security_tun_dev_attach(struct sock *sk)
2842 #endif /* CONFIG_SECURITY_NETWORK */
2844 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2846 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx);
2847 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
2848 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
2849 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
2850 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
2851 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2852 struct xfrm_sec_ctx *polsec, u32 secid);
2853 int security_xfrm_state_delete(struct xfrm_state *x);
2854 void security_xfrm_state_free(struct xfrm_state *x);
2855 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
2856 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2857 struct xfrm_policy *xp, struct flowi *fl);
2858 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
2859 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
2861 #else /* CONFIG_SECURITY_NETWORK_XFRM */
2863 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
2868 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
2873 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
2877 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
2882 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
2883 struct xfrm_user_sec_ctx *sec_ctx)
2888 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2889 struct xfrm_sec_ctx *polsec, u32 secid)
2894 static inline void security_xfrm_state_free(struct xfrm_state *x)
2898 static inline int security_xfrm_state_delete(struct xfrm_state *x)
2903 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
2908 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2909 struct xfrm_policy *xp, struct flowi *fl)
2914 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
2919 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2923 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2925 #ifdef CONFIG_SECURITY_PATH
2926 int security_path_unlink(struct path *dir, struct dentry *dentry);
2927 int security_path_mkdir(struct path *dir, struct dentry *dentry, int mode);
2928 int security_path_rmdir(struct path *dir, struct dentry *dentry);
2929 int security_path_mknod(struct path *dir, struct dentry *dentry, int mode,
2931 int security_path_truncate(struct path *path, loff_t length,
2932 unsigned int time_attrs);
2933 int security_path_symlink(struct path *dir, struct dentry *dentry,
2934 const char *old_name);
2935 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
2936 struct dentry *new_dentry);
2937 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
2938 struct path *new_dir, struct dentry *new_dentry);
2939 int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
2941 int security_path_chown(struct path *path, uid_t uid, gid_t gid);
2942 int security_path_chroot(struct path *path);
2943 #else /* CONFIG_SECURITY_PATH */
2944 static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
2949 static inline int security_path_mkdir(struct path *dir, struct dentry *dentry,
2955 static inline int security_path_rmdir(struct path *dir, struct dentry *dentry)
2960 static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
2961 int mode, unsigned int dev)
2966 static inline int security_path_truncate(struct path *path, loff_t length,
2967 unsigned int time_attrs)
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 dentry *dentry,
2994 struct vfsmount *mnt,
3000 static inline int security_path_chown(struct path *path, uid_t uid, gid_t gid)
3005 static inline int security_path_chroot(struct path *path)
3009 #endif /* CONFIG_SECURITY_PATH */
3012 #ifdef CONFIG_SECURITY
3014 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
3015 void security_key_free(struct key *key);
3016 int security_key_permission(key_ref_t key_ref,
3017 const struct cred *cred, key_perm_t perm);
3018 int security_key_getsecurity(struct key *key, char **_buffer);
3019 int security_key_session_to_parent(const struct cred *cred,
3020 const struct cred *parent_cred,
3025 static inline int security_key_alloc(struct key *key,
3026 const struct cred *cred,
3027 unsigned long flags)
3032 static inline void security_key_free(struct key *key)
3036 static inline int security_key_permission(key_ref_t key_ref,
3037 const struct cred *cred,
3043 static inline int security_key_getsecurity(struct key *key, char **_buffer)
3049 static inline int security_key_session_to_parent(const struct cred *cred,
3050 const struct cred *parent_cred,
3057 #endif /* CONFIG_KEYS */
3060 #ifdef CONFIG_SECURITY
3061 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
3062 int security_audit_rule_known(struct audit_krule *krule);
3063 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
3064 struct audit_context *actx);
3065 void security_audit_rule_free(void *lsmrule);
3069 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
3075 static inline int security_audit_rule_known(struct audit_krule *krule)
3080 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
3081 void *lsmrule, struct audit_context *actx)
3086 static inline void security_audit_rule_free(void *lsmrule)
3089 #endif /* CONFIG_SECURITY */
3090 #endif /* CONFIG_AUDIT */
3092 #ifdef CONFIG_SECURITYFS
3094 extern struct dentry *securityfs_create_file(const char *name, mode_t mode,
3095 struct dentry *parent, void *data,
3096 const struct file_operations *fops);
3097 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
3098 extern void securityfs_remove(struct dentry *dentry);
3100 #else /* CONFIG_SECURITYFS */
3102 static inline struct dentry *securityfs_create_dir(const char *name,
3103 struct dentry *parent)
3105 return ERR_PTR(-ENODEV);
3108 static inline struct dentry *securityfs_create_file(const char *name,
3110 struct dentry *parent,
3112 const struct file_operations *fops)
3114 return ERR_PTR(-ENODEV);
3117 static inline void securityfs_remove(struct dentry *dentry)
3122 #ifdef CONFIG_SECURITY
3124 static inline char *alloc_secdata(void)
3126 return (char *)get_zeroed_page(GFP_KERNEL);
3129 static inline void free_secdata(void *secdata)
3131 free_page((unsigned long)secdata);
3136 static inline char *alloc_secdata(void)
3141 static inline void free_secdata(void *secdata)
3143 #endif /* CONFIG_SECURITY */
3145 #endif /* ! __LINUX_SECURITY_H */