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/msg.h>
32 #include <linux/sched.h>
33 #include <linux/key.h>
34 #include <linux/xfrm.h>
40 * These functions are in security/capability.c and are used
41 * as the default capabilities functions
43 extern int cap_capable (struct task_struct *tsk, int cap);
44 extern int cap_settime (struct timespec *ts, struct timezone *tz);
45 extern int cap_ptrace (struct task_struct *parent, struct task_struct *child);
46 extern int cap_capget (struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
47 extern int cap_capset_check (struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
48 extern void cap_capset_set (struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
49 extern int cap_bprm_set_security (struct linux_binprm *bprm);
50 extern void cap_bprm_apply_creds (struct linux_binprm *bprm, int unsafe);
51 extern int cap_bprm_secureexec(struct linux_binprm *bprm);
52 extern int cap_inode_setxattr(struct dentry *dentry, char *name, void *value, size_t size, int flags);
53 extern int cap_inode_removexattr(struct dentry *dentry, char *name);
54 extern int cap_inode_need_killpriv(struct dentry *dentry);
55 extern int cap_inode_killpriv(struct dentry *dentry);
56 extern int cap_task_post_setuid (uid_t old_ruid, uid_t old_euid, uid_t old_suid, int flags);
57 extern void cap_task_reparent_to_init (struct task_struct *p);
58 extern int cap_task_kill(struct task_struct *p, struct siginfo *info, int sig, u32 secid);
59 extern int cap_task_setscheduler (struct task_struct *p, int policy, struct sched_param *lp);
60 extern int cap_task_setioprio (struct task_struct *p, int ioprio);
61 extern int cap_task_setnice (struct task_struct *p, int nice);
62 extern int cap_syslog (int type);
63 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
75 struct xfrm_user_sec_ctx;
77 extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
78 extern int cap_netlink_recv(struct sk_buff *skb, int cap);
80 extern unsigned long mmap_min_addr;
82 * Values used in the task_security_ops calls
84 /* setuid or setgid, id0 == uid or gid */
85 #define LSM_SETID_ID 1
87 /* setreuid or setregid, id0 == real, id1 == eff */
88 #define LSM_SETID_RE 2
90 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
91 #define LSM_SETID_RES 4
93 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
94 #define LSM_SETID_FS 8
96 /* forward declares to avoid warnings */
99 struct swap_info_struct;
102 /* bprm_apply_creds unsafe reasons */
103 #define LSM_UNSAFE_SHARE 1
104 #define LSM_UNSAFE_PTRACE 2
105 #define LSM_UNSAFE_PTRACE_CAP 4
107 #ifdef CONFIG_SECURITY
110 * struct security_operations - main security structure
112 * Security hooks for program execution operations.
114 * @bprm_alloc_security:
115 * Allocate and attach a security structure to the @bprm->security field.
116 * The security field is initialized to NULL when the bprm structure is
118 * @bprm contains the linux_binprm structure to be modified.
119 * Return 0 if operation was successful.
120 * @bprm_free_security:
121 * @bprm contains the linux_binprm structure to be modified.
122 * Deallocate and clear the @bprm->security field.
124 * Compute and set the security attributes of a process being transformed
125 * by an execve operation based on the old attributes (current->security)
126 * and the information saved in @bprm->security by the set_security hook.
127 * Since this hook function (and its caller) are void, this hook can not
128 * return an error. However, it can leave the security attributes of the
129 * process unchanged if an access failure occurs at this point.
130 * bprm_apply_creds is called under task_lock. @unsafe indicates various
131 * reasons why it may be unsafe to change security state.
132 * @bprm contains the linux_binprm structure.
133 * @bprm_post_apply_creds:
134 * Runs after bprm_apply_creds with the task_lock dropped, so that
135 * functions which cannot be called safely under the task_lock can
136 * be used. This hook is a good place to perform state changes on
137 * the process such as closing open file descriptors to which access
138 * is no longer granted if the attributes were changed.
139 * Note that a security module might need to save state between
140 * bprm_apply_creds and bprm_post_apply_creds to store the decision
141 * on whether the process may proceed.
142 * @bprm contains the linux_binprm structure.
143 * @bprm_set_security:
144 * Save security information in the bprm->security field, typically based
145 * on information about the bprm->file, for later use by the apply_creds
146 * hook. This hook may also optionally check permissions (e.g. for
147 * transitions between security domains).
148 * This hook may be called multiple times during a single execve, e.g. for
149 * interpreters. The hook can tell whether it has already been called by
150 * checking to see if @bprm->security is non-NULL. If so, then the hook
151 * may decide either to retain the security information saved earlier or
153 * @bprm contains the linux_binprm structure.
154 * Return 0 if the hook is successful and permission is granted.
155 * @bprm_check_security:
156 * This hook mediates the point when a search for a binary handler will
157 * begin. It allows a check the @bprm->security value which is set in
158 * the preceding set_security call. The primary difference from
159 * set_security is that the argv list and envp list are reliably
160 * available in @bprm. This hook may be called multiple times
161 * during a single execve; and in each pass set_security is called
163 * @bprm contains the linux_binprm structure.
164 * Return 0 if the hook is successful and permission is granted.
166 * Return a boolean value (0 or 1) indicating whether a "secure exec"
167 * is required. The flag is passed in the auxiliary table
168 * on the initial stack to the ELF interpreter to indicate whether libc
169 * should enable secure mode.
170 * @bprm contains the linux_binprm structure.
172 * Security hooks for filesystem operations.
174 * @sb_alloc_security:
175 * Allocate and attach a security structure to the sb->s_security field.
176 * The s_security field is initialized to NULL when the structure is
178 * @sb contains the super_block structure to be modified.
179 * Return 0 if operation was successful.
181 * Deallocate and clear the sb->s_security field.
182 * @sb contains the super_block structure to be modified.
184 * Check permission before obtaining filesystem statistics for the @mnt
186 * @dentry is a handle on the superblock for the filesystem.
187 * Return 0 if permission is granted.
189 * Check permission before an object specified by @dev_name is mounted on
190 * the mount point named by @nd. For an ordinary mount, @dev_name
191 * identifies a device if the file system type requires a device. For a
192 * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a
193 * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
194 * pathname of the object being mounted.
195 * @dev_name contains the name for object being mounted.
196 * @nd contains the nameidata structure for mount point object.
197 * @type contains the filesystem type.
198 * @flags contains the mount flags.
199 * @data contains the filesystem-specific data.
200 * Return 0 if permission is granted.
202 * Allow mount option data to be copied prior to parsing by the filesystem,
203 * so that the security module can extract security-specific mount
204 * options cleanly (a filesystem may modify the data e.g. with strsep()).
205 * This also allows the original mount data to be stripped of security-
206 * specific options to avoid having to make filesystems aware of them.
207 * @type the type of filesystem being mounted.
208 * @orig the original mount data copied from userspace.
209 * @copy copied data which will be passed to the security module.
210 * Returns 0 if the copy was successful.
212 * Check permission before the device with superblock @mnt->sb is mounted
213 * on the mount point named by @nd.
214 * @mnt contains the vfsmount for device being mounted.
215 * @nd contains the nameidata object for the mount point.
216 * Return 0 if permission is granted.
218 * Check permission before the @mnt file system is unmounted.
219 * @mnt contains the mounted file system.
220 * @flags contains the unmount flags, e.g. MNT_FORCE.
221 * Return 0 if permission is granted.
223 * Close any files in the @mnt mounted filesystem that are held open by
224 * the security module. This hook is called during an umount operation
225 * prior to checking whether the filesystem is still busy.
226 * @mnt contains the mounted filesystem.
228 * Handle a failed umount of the @mnt mounted filesystem, e.g. re-opening
229 * any files that were closed by umount_close. This hook is called during
230 * an umount operation if the umount fails after a call to the
232 * @mnt contains the mounted filesystem.
234 * Update the security module's state when a filesystem is remounted.
235 * This hook is only called if the remount was successful.
236 * @mnt contains the mounted file system.
237 * @flags contains the new filesystem flags.
238 * @data contains the filesystem-specific data.
239 * @sb_post_mountroot:
240 * Update the security module's state when the root filesystem is mounted.
241 * This hook is only called if the mount was successful.
243 * Update the security module's state when a filesystem is mounted.
244 * This hook is called any time a mount is successfully grafetd to
246 * @mnt contains the mounted filesystem.
247 * @mountpoint_nd contains the nameidata structure for the mount point.
249 * Check permission before pivoting the root filesystem.
250 * @old_nd contains the nameidata structure for the new location of the current root (put_old).
251 * @new_nd contains the nameidata structure for the new root (new_root).
252 * Return 0 if permission is granted.
253 * @sb_post_pivotroot:
254 * Update module state after a successful pivot.
255 * @old_nd contains the nameidata structure for the old root.
256 * @new_nd contains the nameidata structure for the new root.
258 * Security hooks for inode operations.
260 * @inode_alloc_security:
261 * Allocate and attach a security structure to @inode->i_security. The
262 * i_security field is initialized to NULL when the inode structure is
264 * @inode contains the inode structure.
265 * Return 0 if operation was successful.
266 * @inode_free_security:
267 * @inode contains the inode structure.
268 * Deallocate the inode security structure and set @inode->i_security to
270 * @inode_init_security:
271 * Obtain the security attribute name suffix and value to set on a newly
272 * created inode and set up the incore security field for the new inode.
273 * This hook is called by the fs code as part of the inode creation
274 * transaction and provides for atomic labeling of the inode, unlike
275 * the post_create/mkdir/... hooks called by the VFS. The hook function
276 * is expected to allocate the name and value via kmalloc, with the caller
277 * being responsible for calling kfree after using them.
278 * If the security module does not use security attributes or does
279 * not wish to put a security attribute on this particular inode,
280 * then it should return -EOPNOTSUPP to skip this processing.
281 * @inode contains the inode structure of the newly created inode.
282 * @dir contains the inode structure of the parent directory.
283 * @name will be set to the allocated name suffix (e.g. selinux).
284 * @value will be set to the allocated attribute value.
285 * @len will be set to the length of the value.
286 * Returns 0 if @name and @value have been successfully set,
287 * -EOPNOTSUPP if no security attribute is needed, or
288 * -ENOMEM on memory allocation failure.
290 * Check permission to create a regular file.
291 * @dir contains inode structure of the parent of the new file.
292 * @dentry contains the dentry structure for the file to be created.
293 * @mode contains the file mode of the file to be created.
294 * Return 0 if permission is granted.
296 * Check permission before creating a new hard link to a file.
297 * @old_dentry contains the dentry structure for an existing link to the file.
298 * @dir contains the inode structure of the parent directory of the new link.
299 * @new_dentry contains the dentry structure for the new link.
300 * Return 0 if permission is granted.
302 * Check the permission to remove a hard link to a file.
303 * @dir contains the inode structure of parent directory of the file.
304 * @dentry contains the dentry structure for file to be unlinked.
305 * Return 0 if permission is granted.
307 * Check the permission to create a symbolic link to a file.
308 * @dir contains the inode structure of parent directory of the symbolic link.
309 * @dentry contains the dentry structure of the symbolic link.
310 * @old_name contains the pathname of file.
311 * Return 0 if permission is granted.
313 * Check permissions to create a new directory in the existing directory
314 * associated with inode strcture @dir.
315 * @dir containst the inode structure of parent of the directory to be created.
316 * @dentry contains the dentry structure of new directory.
317 * @mode contains the mode of new directory.
318 * Return 0 if permission is granted.
320 * Check the permission to remove a directory.
321 * @dir contains the inode structure of parent of the directory to be removed.
322 * @dentry contains the dentry structure of directory to be removed.
323 * Return 0 if permission is granted.
325 * Check permissions when creating a special file (or a socket or a fifo
326 * file created via the mknod system call). Note that if mknod operation
327 * is being done for a regular file, then the create hook will be called
329 * @dir contains the inode structure of parent of the new file.
330 * @dentry contains the dentry structure of the new file.
331 * @mode contains the mode of the new file.
332 * @dev contains the device number.
333 * Return 0 if permission is granted.
335 * Check for permission to rename a file or directory.
336 * @old_dir contains the inode structure for parent of the old link.
337 * @old_dentry contains the dentry structure of the old link.
338 * @new_dir contains the inode structure for parent of the new link.
339 * @new_dentry contains the dentry structure of the new link.
340 * Return 0 if permission is granted.
342 * Check the permission to read the symbolic link.
343 * @dentry contains the dentry structure for the file link.
344 * Return 0 if permission is granted.
345 * @inode_follow_link:
346 * Check permission to follow a symbolic link when looking up a pathname.
347 * @dentry contains the dentry structure for the link.
348 * @nd contains the nameidata structure for the parent directory.
349 * Return 0 if permission is granted.
351 * Check permission before accessing an inode. This hook is called by the
352 * existing Linux permission function, so a security module can use it to
353 * provide additional checking for existing Linux permission checks.
354 * Notice that this hook is called when a file is opened (as well as many
355 * other operations), whereas the file_security_ops permission hook is
356 * called when the actual read/write operations are performed.
357 * @inode contains the inode structure to check.
358 * @mask contains the permission mask.
359 * @nd contains the nameidata (may be NULL).
360 * Return 0 if permission is granted.
362 * Check permission before setting file attributes. Note that the kernel
363 * call to notify_change is performed from several locations, whenever
364 * file attributes change (such as when a file is truncated, chown/chmod
365 * operations, transferring disk quotas, etc).
366 * @dentry contains the dentry structure for the file.
367 * @attr is the iattr structure containing the new file attributes.
368 * Return 0 if permission is granted.
370 * Check permission before obtaining file attributes.
371 * @mnt is the vfsmount where the dentry was looked up
372 * @dentry contains the dentry structure for the file.
373 * Return 0 if permission is granted.
375 * @inode contains the inode structure for deleted inode.
376 * This hook is called when a deleted inode is released (i.e. an inode
377 * with no hard links has its use count drop to zero). A security module
378 * can use this hook to release any persistent label associated with the
381 * Check permission before setting the extended attributes
382 * @value identified by @name for @dentry.
383 * Return 0 if permission is granted.
384 * @inode_post_setxattr:
385 * Update inode security field after successful setxattr operation.
386 * @value identified by @name for @dentry.
388 * Check permission before obtaining the extended attributes
389 * identified by @name for @dentry.
390 * Return 0 if permission is granted.
392 * Check permission before obtaining the list of extended attribute
394 * Return 0 if permission is granted.
395 * @inode_removexattr:
396 * Check permission before removing the extended attribute
397 * identified by @name for @dentry.
398 * Return 0 if permission is granted.
399 * @inode_getsecurity:
400 * Copy the extended attribute representation of the security label
401 * associated with @name for @inode into @buffer. @buffer may be
402 * NULL to request the size of the buffer required. @size indicates
403 * the size of @buffer in bytes. Note that @name is the remainder
404 * of the attribute name after the security. prefix has been removed.
405 * @err is the return value from the preceding fs getxattr call,
406 * and can be used by the security module to determine whether it
407 * should try and canonicalize the attribute value.
408 * Return number of bytes used/required on success.
409 * @inode_setsecurity:
410 * Set the security label associated with @name for @inode from the
411 * extended attribute value @value. @size indicates the size of the
412 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
413 * Note that @name is the remainder of the attribute name after the
414 * security. prefix has been removed.
415 * Return 0 on success.
416 * @inode_listsecurity:
417 * Copy the extended attribute names for the security labels
418 * associated with @inode into @buffer. The maximum size of @buffer
419 * is specified by @buffer_size. @buffer may be NULL to request
420 * the size of the buffer required.
421 * Returns number of bytes used/required on success.
422 * @inode_need_killpriv:
423 * Called when an inode has been changed.
424 * @dentry is the dentry being changed.
425 * Return <0 on error to abort the inode change operation.
426 * Return 0 if inode_killpriv does not need to be called.
427 * Return >0 if inode_killpriv does need to be called.
429 * The setuid bit is being removed. Remove similar security labels.
430 * Called with the dentry->d_inode->i_mutex held.
431 * @dentry is the dentry being changed.
432 * Return 0 on success. If error is returned, then the operation
433 * causing setuid bit removal is failed.
435 * Security hooks for file operations
438 * Check file permissions before accessing an open file. This hook is
439 * called by various operations that read or write files. A security
440 * module can use this hook to perform additional checking on these
441 * operations, e.g. to revalidate permissions on use to support privilege
442 * bracketing or policy changes. Notice that this hook is used when the
443 * actual read/write operations are performed, whereas the
444 * inode_security_ops hook is called when a file is opened (as well as
445 * many other operations).
446 * Caveat: Although this hook can be used to revalidate permissions for
447 * various system call operations that read or write files, it does not
448 * address the revalidation of permissions for memory-mapped files.
449 * Security modules must handle this separately if they need such
451 * @file contains the file structure being accessed.
452 * @mask contains the requested permissions.
453 * Return 0 if permission is granted.
454 * @file_alloc_security:
455 * Allocate and attach a security structure to the file->f_security field.
456 * The security field is initialized to NULL when the structure is first
458 * @file contains the file structure to secure.
459 * Return 0 if the hook is successful and permission is granted.
460 * @file_free_security:
461 * Deallocate and free any security structures stored in file->f_security.
462 * @file contains the file structure being modified.
464 * @file contains the file structure.
465 * @cmd contains the operation to perform.
466 * @arg contains the operational arguments.
467 * Check permission for an ioctl operation on @file. Note that @arg can
468 * sometimes represents a user space pointer; in other cases, it may be a
469 * simple integer value. When @arg represents a user space pointer, it
470 * should never be used by the security module.
471 * Return 0 if permission is granted.
473 * Check permissions for a mmap operation. The @file may be NULL, e.g.
474 * if mapping anonymous memory.
475 * @file contains the file structure for file to map (may be NULL).
476 * @reqprot contains the protection requested by the application.
477 * @prot contains the protection that will be applied by the kernel.
478 * @flags contains the operational flags.
479 * Return 0 if permission is granted.
481 * Check permissions before changing memory access permissions.
482 * @vma contains the memory region to modify.
483 * @reqprot contains the protection requested by the application.
484 * @prot contains the protection that will be applied by the kernel.
485 * Return 0 if permission is granted.
487 * Check permission before performing file locking operations.
488 * Note: this hook mediates both flock and fcntl style locks.
489 * @file contains the file structure.
490 * @cmd contains the posix-translated lock operation to perform
491 * (e.g. F_RDLCK, F_WRLCK).
492 * Return 0 if permission is granted.
494 * Check permission before allowing the file operation specified by @cmd
495 * from being performed on the file @file. Note that @arg can sometimes
496 * represents a user space pointer; in other cases, it may be a simple
497 * integer value. When @arg represents a user space pointer, it should
498 * never be used by the security module.
499 * @file contains the file structure.
500 * @cmd contains the operation to be performed.
501 * @arg contains the operational arguments.
502 * Return 0 if permission is granted.
504 * Save owner security information (typically from current->security) in
505 * file->f_security for later use by the send_sigiotask hook.
506 * @file contains the file structure to update.
507 * Return 0 on success.
508 * @file_send_sigiotask:
509 * Check permission for the file owner @fown to send SIGIO or SIGURG to the
510 * process @tsk. Note that this hook is sometimes called from interrupt.
511 * Note that the fown_struct, @fown, is never outside the context of a
512 * struct file, so the file structure (and associated security information)
513 * can always be obtained:
514 * container_of(fown, struct file, f_owner)
515 * @tsk contains the structure of task receiving signal.
516 * @fown contains the file owner information.
517 * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
518 * Return 0 if permission is granted.
520 * This hook allows security modules to control the ability of a process
521 * to receive an open file descriptor via socket IPC.
522 * @file contains the file structure being received.
523 * Return 0 if permission is granted.
525 * Security hook for dentry
528 * Save open-time permission checking state for later use upon
529 * file_permission, and recheck access if anything has changed
530 * since inode_permission.
532 * Security hooks for task operations.
535 * Check permission before creating a child process. See the clone(2)
536 * manual page for definitions of the @clone_flags.
537 * @clone_flags contains the flags indicating what should be shared.
538 * Return 0 if permission is granted.
539 * @task_alloc_security:
540 * @p contains the task_struct for child process.
541 * Allocate and attach a security structure to the p->security field. The
542 * security field is initialized to NULL when the task structure is
544 * Return 0 if operation was successful.
545 * @task_free_security:
546 * @p contains the task_struct for process.
547 * Deallocate and clear the p->security field.
549 * Check permission before setting one or more of the user identity
550 * attributes of the current process. The @flags parameter indicates
551 * which of the set*uid system calls invoked this hook and how to
552 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
553 * definitions at the beginning of this file for the @flags values and
555 * @id0 contains a uid.
556 * @id1 contains a uid.
557 * @id2 contains a uid.
558 * @flags contains one of the LSM_SETID_* values.
559 * Return 0 if permission is granted.
561 * Update the module's state after setting one or more of the user
562 * identity attributes of the current process. The @flags parameter
563 * indicates which of the set*uid system calls invoked this hook. If
564 * @flags is LSM_SETID_FS, then @old_ruid is the old fs uid and the other
565 * parameters are not used.
566 * @old_ruid contains the old real uid (or fs uid if LSM_SETID_FS).
567 * @old_euid contains the old effective uid (or -1 if LSM_SETID_FS).
568 * @old_suid contains the old saved uid (or -1 if LSM_SETID_FS).
569 * @flags contains one of the LSM_SETID_* values.
570 * Return 0 on success.
572 * Check permission before setting one or more of the group identity
573 * attributes of the current process. The @flags parameter indicates
574 * which of the set*gid system calls invoked this hook and how to
575 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
576 * definitions at the beginning of this file for the @flags values and
578 * @id0 contains a gid.
579 * @id1 contains a gid.
580 * @id2 contains a gid.
581 * @flags contains one of the LSM_SETID_* values.
582 * Return 0 if permission is granted.
584 * Check permission before setting the process group identifier of the
585 * process @p to @pgid.
586 * @p contains the task_struct for process being modified.
587 * @pgid contains the new pgid.
588 * Return 0 if permission is granted.
590 * Check permission before getting the process group identifier of the
592 * @p contains the task_struct for the process.
593 * Return 0 if permission is granted.
595 * Check permission before getting the session identifier of the process
597 * @p contains the task_struct for the process.
598 * Return 0 if permission is granted.
600 * Retrieve the security identifier of the process @p.
601 * @p contains the task_struct for the process and place is into @secid.
603 * Check permission before setting the supplementary group set of the
605 * @group_info contains the new group information.
606 * Return 0 if permission is granted.
608 * Check permission before setting the nice value of @p to @nice.
609 * @p contains the task_struct of process.
610 * @nice contains the new nice value.
611 * Return 0 if permission is granted.
613 * Check permission before setting the ioprio value of @p to @ioprio.
614 * @p contains the task_struct of process.
615 * @ioprio contains the new ioprio value
616 * Return 0 if permission is granted.
618 * Check permission before getting the ioprio value of @p.
619 * @p contains the task_struct of process.
620 * Return 0 if permission is granted.
622 * Check permission before setting the resource limits of the current
623 * process for @resource to @new_rlim. The old resource limit values can
624 * be examined by dereferencing (current->signal->rlim + resource).
625 * @resource contains the resource whose limit is being set.
626 * @new_rlim contains the new limits for @resource.
627 * Return 0 if permission is granted.
628 * @task_setscheduler:
629 * Check permission before setting scheduling policy and/or parameters of
630 * process @p based on @policy and @lp.
631 * @p contains the task_struct for process.
632 * @policy contains the scheduling policy.
633 * @lp contains the scheduling parameters.
634 * Return 0 if permission is granted.
635 * @task_getscheduler:
636 * Check permission before obtaining scheduling information for process
638 * @p contains the task_struct for process.
639 * Return 0 if permission is granted.
641 * Check permission before moving memory owned by process @p.
642 * @p contains the task_struct for process.
643 * Return 0 if permission is granted.
645 * Check permission before sending signal @sig to @p. @info can be NULL,
646 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
647 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
648 * from the kernel and should typically be permitted.
649 * SIGIO signals are handled separately by the send_sigiotask hook in
651 * @p contains the task_struct for process.
652 * @info contains the signal information.
653 * @sig contains the signal value.
654 * @secid contains the sid of the process where the signal originated
655 * Return 0 if permission is granted.
657 * Check permission before allowing a process to reap a child process @p
658 * and collect its status information.
659 * @p contains the task_struct for process.
660 * Return 0 if permission is granted.
662 * Check permission before performing a process control operation on the
664 * @option contains the operation.
665 * @arg2 contains a argument.
666 * @arg3 contains a argument.
667 * @arg4 contains a argument.
668 * @arg5 contains a argument.
669 * Return 0 if permission is granted.
670 * @task_reparent_to_init:
671 * Set the security attributes in @p->security for a kernel thread that
672 * is being reparented to the init task.
673 * @p contains the task_struct for the kernel thread.
675 * Set the security attributes for an inode based on an associated task's
676 * security attributes, e.g. for /proc/pid inodes.
677 * @p contains the task_struct for the task.
678 * @inode contains the inode structure for the inode.
680 * Security hooks for Netlink messaging.
683 * Save security information for a netlink message so that permission
684 * checking can be performed when the message is processed. The security
685 * information can be saved using the eff_cap field of the
686 * netlink_skb_parms structure. Also may be used to provide fine
687 * grained control over message transmission.
688 * @sk associated sock of task sending the message.,
689 * @skb contains the sk_buff structure for the netlink message.
690 * Return 0 if the information was successfully saved and message
691 * is allowed to be transmitted.
693 * Check permission before processing the received netlink message in
695 * @skb contains the sk_buff structure for the netlink message.
696 * @cap indicates the capability required
697 * Return 0 if permission is granted.
699 * Security hooks for Unix domain networking.
701 * @unix_stream_connect:
702 * Check permissions before establishing a Unix domain stream connection
703 * between @sock and @other.
704 * @sock contains the socket structure.
705 * @other contains the peer socket structure.
706 * Return 0 if permission is granted.
708 * Check permissions before connecting or sending datagrams from @sock to
710 * @sock contains the socket structure.
711 * @sock contains the peer socket structure.
712 * Return 0 if permission is granted.
714 * The @unix_stream_connect and @unix_may_send hooks were necessary because
715 * Linux provides an alternative to the conventional file name space for Unix
716 * domain sockets. Whereas binding and connecting to sockets in the file name
717 * space is mediated by the typical file permissions (and caught by the mknod
718 * and permission hooks in inode_security_ops), binding and connecting to
719 * sockets in the abstract name space is completely unmediated. Sufficient
720 * control of Unix domain sockets in the abstract name space isn't possible
721 * using only the socket layer hooks, since we need to know the actual target
722 * socket, which is not looked up until we are inside the af_unix code.
724 * Security hooks for socket operations.
727 * Check permissions prior to creating a new socket.
728 * @family contains the requested protocol family.
729 * @type contains the requested communications type.
730 * @protocol contains the requested protocol.
731 * @kern set to 1 if a kernel socket.
732 * Return 0 if permission is granted.
733 * @socket_post_create:
734 * This hook allows a module to update or allocate a per-socket security
735 * structure. Note that the security field was not added directly to the
736 * socket structure, but rather, the socket security information is stored
737 * in the associated inode. Typically, the inode alloc_security hook will
738 * allocate and and attach security information to
739 * sock->inode->i_security. This hook may be used to update the
740 * sock->inode->i_security field with additional information that wasn't
741 * available when the inode was allocated.
742 * @sock contains the newly created socket structure.
743 * @family contains the requested protocol family.
744 * @type contains the requested communications type.
745 * @protocol contains the requested protocol.
746 * @kern set to 1 if a kernel socket.
748 * Check permission before socket protocol layer bind operation is
749 * performed and the socket @sock is bound to the address specified in the
750 * @address parameter.
751 * @sock contains the socket structure.
752 * @address contains the address to bind to.
753 * @addrlen contains the length of address.
754 * Return 0 if permission is granted.
756 * Check permission before socket protocol layer connect operation
757 * attempts to connect socket @sock to a remote address, @address.
758 * @sock contains the socket structure.
759 * @address contains the address of remote endpoint.
760 * @addrlen contains the length of address.
761 * Return 0 if permission is granted.
763 * Check permission before socket protocol layer listen operation.
764 * @sock contains the socket structure.
765 * @backlog contains the maximum length for the pending connection queue.
766 * Return 0 if permission is granted.
768 * Check permission before accepting a new connection. Note that the new
769 * socket, @newsock, has been created and some information copied to it,
770 * but the accept operation has not actually been performed.
771 * @sock contains the listening socket structure.
772 * @newsock contains the newly created server socket for connection.
773 * Return 0 if permission is granted.
774 * @socket_post_accept:
775 * This hook allows a security module to copy security
776 * information into the newly created socket's inode.
777 * @sock contains the listening socket structure.
778 * @newsock contains the newly created server socket for connection.
780 * Check permission before transmitting a message to another socket.
781 * @sock contains the socket structure.
782 * @msg contains the message to be transmitted.
783 * @size contains the size of message.
784 * Return 0 if permission is granted.
786 * Check permission before receiving a message from a socket.
787 * @sock contains the socket structure.
788 * @msg contains the message structure.
789 * @size contains the size of message structure.
790 * @flags contains the operational flags.
791 * Return 0 if permission is granted.
792 * @socket_getsockname:
793 * Check permission before the local address (name) of the socket object
794 * @sock is retrieved.
795 * @sock contains the socket structure.
796 * Return 0 if permission is granted.
797 * @socket_getpeername:
798 * Check permission before the remote address (name) of a socket object
799 * @sock is retrieved.
800 * @sock contains the socket structure.
801 * Return 0 if permission is granted.
802 * @socket_getsockopt:
803 * Check permissions before retrieving the options associated with socket
805 * @sock contains the socket structure.
806 * @level contains the protocol level to retrieve option from.
807 * @optname contains the name of option to retrieve.
808 * Return 0 if permission is granted.
809 * @socket_setsockopt:
810 * Check permissions before setting the options associated with socket
812 * @sock contains the socket structure.
813 * @level contains the protocol level to set options for.
814 * @optname contains the name of the option to set.
815 * Return 0 if permission is granted.
817 * Checks permission before all or part of a connection on the socket
818 * @sock is shut down.
819 * @sock contains the socket structure.
820 * @how contains the flag indicating how future sends and receives are handled.
821 * Return 0 if permission is granted.
822 * @socket_sock_rcv_skb:
823 * Check permissions on incoming network packets. This hook is distinct
824 * from Netfilter's IP input hooks since it is the first time that the
825 * incoming sk_buff @skb has been associated with a particular socket, @sk.
826 * @sk contains the sock (not socket) associated with the incoming sk_buff.
827 * @skb contains the incoming network data.
828 * @socket_getpeersec:
829 * This hook allows the security module to provide peer socket security
830 * state to userspace via getsockopt SO_GETPEERSEC.
831 * @sock is the local socket.
832 * @optval userspace memory where the security state is to be copied.
833 * @optlen userspace int where the module should copy the actual length
834 * of the security state.
835 * @len as input is the maximum length to copy to userspace provided
837 * Return 0 if all is well, otherwise, typical getsockopt return
839 * @sk_alloc_security:
840 * Allocate and attach a security structure to the sk->sk_security field,
841 * which is used to copy security attributes between local stream sockets.
843 * Deallocate security structure.
844 * @sk_clone_security:
845 * Clone/copy security structure.
847 * Retrieve the LSM-specific secid for the sock to enable caching of network
850 * Sets the socket's isec sid to the sock's sid.
851 * @inet_conn_request:
852 * Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
854 * Sets the new child socket's sid to the openreq sid.
855 * @inet_conn_established:
856 * Sets the connection's peersid to the secmark on skb.
857 * @req_classify_flow:
858 * Sets the flow's sid to the openreq sid.
860 * Security hooks for XFRM operations.
862 * @xfrm_policy_alloc_security:
863 * @xp contains the xfrm_policy being added to Security Policy Database
864 * used by the XFRM system.
865 * @sec_ctx contains the security context information being provided by
866 * the user-level policy update program (e.g., setkey).
867 * Allocate a security structure to the xp->security field; the security
868 * field is initialized to NULL when the xfrm_policy is allocated.
869 * Return 0 if operation was successful (memory to allocate, legal context)
870 * @xfrm_policy_clone_security:
871 * @old contains an existing xfrm_policy in the SPD.
872 * @new contains a new xfrm_policy being cloned from old.
873 * Allocate a security structure to the new->security field
874 * that contains the information from the old->security field.
875 * Return 0 if operation was successful (memory to allocate).
876 * @xfrm_policy_free_security:
877 * @xp contains the xfrm_policy
878 * Deallocate xp->security.
879 * @xfrm_policy_delete_security:
880 * @xp contains the xfrm_policy.
881 * Authorize deletion of xp->security.
882 * @xfrm_state_alloc_security:
883 * @x contains the xfrm_state being added to the Security Association
884 * Database by the XFRM system.
885 * @sec_ctx contains the security context information being provided by
886 * the user-level SA generation program (e.g., setkey or racoon).
887 * @secid contains the secid from which to take the mls portion of the context.
888 * Allocate a security structure to the x->security field; the security
889 * field is initialized to NULL when the xfrm_state is allocated. Set the
890 * context to correspond to either sec_ctx or polsec, with the mls portion
891 * taken from secid in the latter case.
892 * Return 0 if operation was successful (memory to allocate, legal context).
893 * @xfrm_state_free_security:
894 * @x contains the xfrm_state.
895 * Deallocate x->security.
896 * @xfrm_state_delete_security:
897 * @x contains the xfrm_state.
898 * Authorize deletion of x->security.
899 * @xfrm_policy_lookup:
900 * @xp contains the xfrm_policy for which the access control is being
902 * @fl_secid contains the flow security label that is used to authorize
903 * access to the policy xp.
904 * @dir contains the direction of the flow (input or output).
905 * Check permission when a flow selects a xfrm_policy for processing
906 * XFRMs on a packet. The hook is called when selecting either a
907 * per-socket policy or a generic xfrm policy.
908 * Return 0 if permission is granted, -ESRCH otherwise, or -errno
910 * @xfrm_state_pol_flow_match:
911 * @x contains the state to match.
912 * @xp contains the policy to check for a match.
913 * @fl contains the flow to check for a match.
914 * Return 1 if there is a match.
915 * @xfrm_decode_session:
916 * @skb points to skb to decode.
917 * @secid points to the flow key secid to set.
918 * @ckall says if all xfrms used should be checked for same secid.
919 * Return 0 if ckall is zero or all xfrms used have the same secid.
921 * Security hooks affecting all Key Management operations
924 * Permit allocation of a key and assign security data. Note that key does
925 * not have a serial number assigned at this point.
926 * @key points to the key.
927 * @flags is the allocation flags
928 * Return 0 if permission is granted, -ve error otherwise.
930 * Notification of destruction; free security data.
931 * @key points to the key.
934 * See whether a specific operational right is granted to a process on a
936 * @key_ref refers to the key (key pointer + possession attribute bit).
937 * @context points to the process to provide the context against which to
938 * evaluate the security data on the key.
939 * @perm describes the combination of permissions required of this key.
940 * Return 1 if permission granted, 0 if permission denied and -ve it the
941 * normal permissions model should be effected.
943 * Security hooks affecting all System V IPC operations.
946 * Check permissions for access to IPC
947 * @ipcp contains the kernel IPC permission structure
948 * @flag contains the desired (requested) permission set
949 * Return 0 if permission is granted.
951 * Security hooks for individual messages held in System V IPC message queues
952 * @msg_msg_alloc_security:
953 * Allocate and attach a security structure to the msg->security field.
954 * The security field is initialized to NULL when the structure is first
956 * @msg contains the message structure to be modified.
957 * Return 0 if operation was successful and permission is granted.
958 * @msg_msg_free_security:
959 * Deallocate the security structure for this message.
960 * @msg contains the message structure to be modified.
962 * Security hooks for System V IPC Message Queues
964 * @msg_queue_alloc_security:
965 * Allocate and attach a security structure to the
966 * msq->q_perm.security field. The security field is initialized to
967 * NULL when the structure is first created.
968 * @msq contains the message queue structure to be modified.
969 * Return 0 if operation was successful and permission is granted.
970 * @msg_queue_free_security:
971 * Deallocate security structure for this message queue.
972 * @msq contains the message queue structure to be modified.
973 * @msg_queue_associate:
974 * Check permission when a message queue is requested through the
975 * msgget system call. This hook is only called when returning the
976 * message queue identifier for an existing message queue, not when a
977 * new message queue is created.
978 * @msq contains the message queue to act upon.
979 * @msqflg contains the operation control flags.
980 * Return 0 if permission is granted.
982 * Check permission when a message control operation specified by @cmd
983 * is to be performed on the message queue @msq.
984 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
985 * @msq contains the message queue to act upon. May be NULL.
986 * @cmd contains the operation to be performed.
987 * Return 0 if permission is granted.
989 * Check permission before a message, @msg, is enqueued on the message
991 * @msq contains the message queue to send message to.
992 * @msg contains the message to be enqueued.
993 * @msqflg contains operational flags.
994 * Return 0 if permission is granted.
996 * Check permission before a message, @msg, is removed from the message
997 * queue, @msq. The @target task structure contains a pointer to the
998 * process that will be receiving the message (not equal to the current
999 * process when inline receives are being performed).
1000 * @msq contains the message queue to retrieve message from.
1001 * @msg contains the message destination.
1002 * @target contains the task structure for recipient process.
1003 * @type contains the type of message requested.
1004 * @mode contains the operational flags.
1005 * Return 0 if permission is granted.
1007 * Security hooks for System V Shared Memory Segments
1009 * @shm_alloc_security:
1010 * Allocate and attach a security structure to the shp->shm_perm.security
1011 * field. The security field is initialized to NULL when the structure is
1013 * @shp contains the shared memory structure to be modified.
1014 * Return 0 if operation was successful and permission is granted.
1015 * @shm_free_security:
1016 * Deallocate the security struct for this memory segment.
1017 * @shp contains the shared memory structure to be modified.
1019 * Check permission when a shared memory region is requested through the
1020 * shmget system call. This hook is only called when returning the shared
1021 * memory region identifier for an existing region, not when a new shared
1022 * memory region is created.
1023 * @shp contains the shared memory structure to be modified.
1024 * @shmflg contains the operation control flags.
1025 * Return 0 if permission is granted.
1027 * Check permission when a shared memory control operation specified by
1028 * @cmd is to be performed on the shared memory region @shp.
1029 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1030 * @shp contains shared memory structure to be modified.
1031 * @cmd contains the operation to be performed.
1032 * Return 0 if permission is granted.
1034 * Check permissions prior to allowing the shmat system call to attach the
1035 * shared memory segment @shp to the data segment of the calling process.
1036 * The attaching address is specified by @shmaddr.
1037 * @shp contains the shared memory structure to be modified.
1038 * @shmaddr contains the address to attach memory region to.
1039 * @shmflg contains the operational flags.
1040 * Return 0 if permission is granted.
1042 * Security hooks for System V Semaphores
1044 * @sem_alloc_security:
1045 * Allocate and attach a security structure to the sma->sem_perm.security
1046 * field. The security field is initialized to NULL when the structure is
1048 * @sma contains the semaphore structure
1049 * Return 0 if operation was successful and permission is granted.
1050 * @sem_free_security:
1051 * deallocate security struct for this semaphore
1052 * @sma contains the semaphore structure.
1054 * Check permission when a semaphore is requested through the semget
1055 * system call. This hook is only called when returning the semaphore
1056 * identifier for an existing semaphore, not when a new one must be
1058 * @sma contains the semaphore structure.
1059 * @semflg contains the operation control flags.
1060 * Return 0 if permission is granted.
1062 * Check permission when a semaphore operation specified by @cmd is to be
1063 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
1064 * IPC_INFO or SEM_INFO.
1065 * @sma contains the semaphore structure. May be NULL.
1066 * @cmd contains the operation to be performed.
1067 * Return 0 if permission is granted.
1069 * Check permissions before performing operations on members of the
1070 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1072 * @sma contains the semaphore structure.
1073 * @sops contains the operations to perform.
1074 * @nsops contains the number of operations to perform.
1075 * @alter contains the flag indicating whether changes are to be made.
1076 * Return 0 if permission is granted.
1079 * Check permission before allowing the @parent process to trace the
1081 * Security modules may also want to perform a process tracing check
1082 * during an execve in the set_security or apply_creds hooks of
1083 * binprm_security_ops if the process is being traced and its security
1084 * attributes would be changed by the execve.
1085 * @parent contains the task_struct structure for parent process.
1086 * @child contains the task_struct structure for child process.
1087 * Return 0 if permission is granted.
1089 * Get the @effective, @inheritable, and @permitted capability sets for
1090 * the @target process. The hook may also perform permission checking to
1091 * determine if the current process is allowed to see the capability sets
1092 * of the @target process.
1093 * @target contains the task_struct structure for target process.
1094 * @effective contains the effective capability set.
1095 * @inheritable contains the inheritable capability set.
1096 * @permitted contains the permitted capability set.
1097 * Return 0 if the capability sets were successfully obtained.
1099 * Check permission before setting the @effective, @inheritable, and
1100 * @permitted capability sets for the @target process.
1101 * Caveat: @target is also set to current if a set of processes is
1102 * specified (i.e. all processes other than current and init or a
1103 * particular process group). Hence, the capset_set hook may need to
1104 * revalidate permission to the actual target process.
1105 * @target contains the task_struct structure for target process.
1106 * @effective contains the effective capability set.
1107 * @inheritable contains the inheritable capability set.
1108 * @permitted contains the permitted capability set.
1109 * Return 0 if permission is granted.
1111 * Set the @effective, @inheritable, and @permitted capability sets for
1112 * the @target process. Since capset_check cannot always check permission
1113 * to the real @target process, this hook may also perform permission
1114 * checking to determine if the current process is allowed to set the
1115 * capability sets of the @target process. However, this hook has no way
1116 * of returning an error due to the structure of the sys_capset code.
1117 * @target contains the task_struct structure for target process.
1118 * @effective contains the effective capability set.
1119 * @inheritable contains the inheritable capability set.
1120 * @permitted contains the permitted capability set.
1122 * Check whether the @tsk process has the @cap capability.
1123 * @tsk contains the task_struct for the process.
1124 * @cap contains the capability <include/linux/capability.h>.
1125 * Return 0 if the capability is granted for @tsk.
1127 * Check permission before enabling or disabling process accounting. If
1128 * accounting is being enabled, then @file refers to the open file used to
1129 * store accounting records. If accounting is being disabled, then @file
1131 * @file contains the file structure for the accounting file (may be NULL).
1132 * Return 0 if permission is granted.
1134 * Check permission before accessing the @table sysctl variable in the
1135 * manner specified by @op.
1136 * @table contains the ctl_table structure for the sysctl variable.
1137 * @op contains the operation (001 = search, 002 = write, 004 = read).
1138 * Return 0 if permission is granted.
1140 * Check permission before accessing the kernel message ring or changing
1141 * logging to the console.
1142 * See the syslog(2) manual page for an explanation of the @type values.
1143 * @type contains the type of action.
1144 * Return 0 if permission is granted.
1146 * Check permission to change the system time.
1147 * struct timespec and timezone are defined in include/linux/time.h
1148 * @ts contains new time
1149 * @tz contains new timezone
1150 * Return 0 if permission is granted.
1151 * @vm_enough_memory:
1152 * Check permissions for allocating a new virtual mapping.
1153 * @mm contains the mm struct it is being added to.
1154 * @pages contains the number of pages.
1155 * Return 0 if permission is granted.
1157 * @register_security:
1158 * allow module stacking.
1159 * @name contains the name of the security module being stacked.
1160 * @ops contains a pointer to the struct security_operations of the module to stack.
1163 * Convert secid to security context.
1164 * @secid contains the security ID.
1165 * @secdata contains the pointer that stores the converted security context.
1168 * Release the security context.
1169 * @secdata contains the security context.
1170 * @seclen contains the length of the security context.
1172 * This is the main security structure.
1174 struct security_operations {
1175 int (*ptrace) (struct task_struct * parent, struct task_struct * child);
1176 int (*capget) (struct task_struct * target,
1177 kernel_cap_t * effective,
1178 kernel_cap_t * inheritable, kernel_cap_t * permitted);
1179 int (*capset_check) (struct task_struct * target,
1180 kernel_cap_t * effective,
1181 kernel_cap_t * inheritable,
1182 kernel_cap_t * permitted);
1183 void (*capset_set) (struct task_struct * target,
1184 kernel_cap_t * effective,
1185 kernel_cap_t * inheritable,
1186 kernel_cap_t * permitted);
1187 int (*capable) (struct task_struct * tsk, int cap);
1188 int (*acct) (struct file * file);
1189 int (*sysctl) (struct ctl_table * table, int op);
1190 int (*quotactl) (int cmds, int type, int id, struct super_block * sb);
1191 int (*quota_on) (struct dentry * dentry);
1192 int (*syslog) (int type);
1193 int (*settime) (struct timespec *ts, struct timezone *tz);
1194 int (*vm_enough_memory) (struct mm_struct *mm, long pages);
1196 int (*bprm_alloc_security) (struct linux_binprm * bprm);
1197 void (*bprm_free_security) (struct linux_binprm * bprm);
1198 void (*bprm_apply_creds) (struct linux_binprm * bprm, int unsafe);
1199 void (*bprm_post_apply_creds) (struct linux_binprm * bprm);
1200 int (*bprm_set_security) (struct linux_binprm * bprm);
1201 int (*bprm_check_security) (struct linux_binprm * bprm);
1202 int (*bprm_secureexec) (struct linux_binprm * bprm);
1204 int (*sb_alloc_security) (struct super_block * sb);
1205 void (*sb_free_security) (struct super_block * sb);
1206 int (*sb_copy_data)(struct file_system_type *type,
1207 void *orig, void *copy);
1208 int (*sb_kern_mount) (struct super_block *sb, void *data);
1209 int (*sb_statfs) (struct dentry *dentry);
1210 int (*sb_mount) (char *dev_name, struct nameidata * nd,
1211 char *type, unsigned long flags, void *data);
1212 int (*sb_check_sb) (struct vfsmount * mnt, struct nameidata * nd);
1213 int (*sb_umount) (struct vfsmount * mnt, int flags);
1214 void (*sb_umount_close) (struct vfsmount * mnt);
1215 void (*sb_umount_busy) (struct vfsmount * mnt);
1216 void (*sb_post_remount) (struct vfsmount * mnt,
1217 unsigned long flags, void *data);
1218 void (*sb_post_mountroot) (void);
1219 void (*sb_post_addmount) (struct vfsmount * mnt,
1220 struct nameidata * mountpoint_nd);
1221 int (*sb_pivotroot) (struct nameidata * old_nd,
1222 struct nameidata * new_nd);
1223 void (*sb_post_pivotroot) (struct nameidata * old_nd,
1224 struct nameidata * new_nd);
1226 int (*inode_alloc_security) (struct inode *inode);
1227 void (*inode_free_security) (struct inode *inode);
1228 int (*inode_init_security) (struct inode *inode, struct inode *dir,
1229 char **name, void **value, size_t *len);
1230 int (*inode_create) (struct inode *dir,
1231 struct dentry *dentry, int mode);
1232 int (*inode_link) (struct dentry *old_dentry,
1233 struct inode *dir, struct dentry *new_dentry);
1234 int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
1235 int (*inode_symlink) (struct inode *dir,
1236 struct dentry *dentry, const char *old_name);
1237 int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, int mode);
1238 int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
1239 int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
1240 int mode, dev_t dev);
1241 int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
1242 struct inode *new_dir, struct dentry *new_dentry);
1243 int (*inode_readlink) (struct dentry *dentry);
1244 int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
1245 int (*inode_permission) (struct inode *inode, int mask, struct nameidata *nd);
1246 int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
1247 int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
1248 void (*inode_delete) (struct inode *inode);
1249 int (*inode_setxattr) (struct dentry *dentry, char *name, void *value,
1250 size_t size, int flags);
1251 void (*inode_post_setxattr) (struct dentry *dentry, char *name, void *value,
1252 size_t size, int flags);
1253 int (*inode_getxattr) (struct dentry *dentry, char *name);
1254 int (*inode_listxattr) (struct dentry *dentry);
1255 int (*inode_removexattr) (struct dentry *dentry, char *name);
1256 int (*inode_need_killpriv) (struct dentry *dentry);
1257 int (*inode_killpriv) (struct dentry *dentry);
1258 int (*inode_getsecurity)(const struct inode *inode, const char *name, void *buffer, size_t size, int err);
1259 int (*inode_setsecurity)(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1260 int (*inode_listsecurity)(struct inode *inode, char *buffer, size_t buffer_size);
1262 int (*file_permission) (struct file * file, int mask);
1263 int (*file_alloc_security) (struct file * file);
1264 void (*file_free_security) (struct file * file);
1265 int (*file_ioctl) (struct file * file, unsigned int cmd,
1267 int (*file_mmap) (struct file * file,
1268 unsigned long reqprot, unsigned long prot,
1269 unsigned long flags, unsigned long addr,
1270 unsigned long addr_only);
1271 int (*file_mprotect) (struct vm_area_struct * vma,
1272 unsigned long reqprot,
1273 unsigned long prot);
1274 int (*file_lock) (struct file * file, unsigned int cmd);
1275 int (*file_fcntl) (struct file * file, unsigned int cmd,
1277 int (*file_set_fowner) (struct file * file);
1278 int (*file_send_sigiotask) (struct task_struct * tsk,
1279 struct fown_struct * fown, int sig);
1280 int (*file_receive) (struct file * file);
1281 int (*dentry_open) (struct file *file);
1283 int (*task_create) (unsigned long clone_flags);
1284 int (*task_alloc_security) (struct task_struct * p);
1285 void (*task_free_security) (struct task_struct * p);
1286 int (*task_setuid) (uid_t id0, uid_t id1, uid_t id2, int flags);
1287 int (*task_post_setuid) (uid_t old_ruid /* or fsuid */ ,
1288 uid_t old_euid, uid_t old_suid, int flags);
1289 int (*task_setgid) (gid_t id0, gid_t id1, gid_t id2, int flags);
1290 int (*task_setpgid) (struct task_struct * p, pid_t pgid);
1291 int (*task_getpgid) (struct task_struct * p);
1292 int (*task_getsid) (struct task_struct * p);
1293 void (*task_getsecid) (struct task_struct * p, u32 * secid);
1294 int (*task_setgroups) (struct group_info *group_info);
1295 int (*task_setnice) (struct task_struct * p, int nice);
1296 int (*task_setioprio) (struct task_struct * p, int ioprio);
1297 int (*task_getioprio) (struct task_struct * p);
1298 int (*task_setrlimit) (unsigned int resource, struct rlimit * new_rlim);
1299 int (*task_setscheduler) (struct task_struct * p, int policy,
1300 struct sched_param * lp);
1301 int (*task_getscheduler) (struct task_struct * p);
1302 int (*task_movememory) (struct task_struct * p);
1303 int (*task_kill) (struct task_struct * p,
1304 struct siginfo * info, int sig, u32 secid);
1305 int (*task_wait) (struct task_struct * p);
1306 int (*task_prctl) (int option, unsigned long arg2,
1307 unsigned long arg3, unsigned long arg4,
1308 unsigned long arg5);
1309 void (*task_reparent_to_init) (struct task_struct * p);
1310 void (*task_to_inode)(struct task_struct *p, struct inode *inode);
1312 int (*ipc_permission) (struct kern_ipc_perm * ipcp, short flag);
1314 int (*msg_msg_alloc_security) (struct msg_msg * msg);
1315 void (*msg_msg_free_security) (struct msg_msg * msg);
1317 int (*msg_queue_alloc_security) (struct msg_queue * msq);
1318 void (*msg_queue_free_security) (struct msg_queue * msq);
1319 int (*msg_queue_associate) (struct msg_queue * msq, int msqflg);
1320 int (*msg_queue_msgctl) (struct msg_queue * msq, int cmd);
1321 int (*msg_queue_msgsnd) (struct msg_queue * msq,
1322 struct msg_msg * msg, int msqflg);
1323 int (*msg_queue_msgrcv) (struct msg_queue * msq,
1324 struct msg_msg * msg,
1325 struct task_struct * target,
1326 long type, int mode);
1328 int (*shm_alloc_security) (struct shmid_kernel * shp);
1329 void (*shm_free_security) (struct shmid_kernel * shp);
1330 int (*shm_associate) (struct shmid_kernel * shp, int shmflg);
1331 int (*shm_shmctl) (struct shmid_kernel * shp, int cmd);
1332 int (*shm_shmat) (struct shmid_kernel * shp,
1333 char __user *shmaddr, int shmflg);
1335 int (*sem_alloc_security) (struct sem_array * sma);
1336 void (*sem_free_security) (struct sem_array * sma);
1337 int (*sem_associate) (struct sem_array * sma, int semflg);
1338 int (*sem_semctl) (struct sem_array * sma, int cmd);
1339 int (*sem_semop) (struct sem_array * sma,
1340 struct sembuf * sops, unsigned nsops, int alter);
1342 int (*netlink_send) (struct sock * sk, struct sk_buff * skb);
1343 int (*netlink_recv) (struct sk_buff * skb, int cap);
1345 /* allow module stacking */
1346 int (*register_security) (const char *name,
1347 struct security_operations *ops);
1349 void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1351 int (*getprocattr)(struct task_struct *p, char *name, char **value);
1352 int (*setprocattr)(struct task_struct *p, char *name, void *value, size_t size);
1353 int (*secid_to_secctx)(u32 secid, char **secdata, u32 *seclen);
1354 void (*release_secctx)(char *secdata, u32 seclen);
1356 #ifdef CONFIG_SECURITY_NETWORK
1357 int (*unix_stream_connect) (struct socket * sock,
1358 struct socket * other, struct sock * newsk);
1359 int (*unix_may_send) (struct socket * sock, struct socket * other);
1361 int (*socket_create) (int family, int type, int protocol, int kern);
1362 int (*socket_post_create) (struct socket * sock, int family,
1363 int type, int protocol, int kern);
1364 int (*socket_bind) (struct socket * sock,
1365 struct sockaddr * address, int addrlen);
1366 int (*socket_connect) (struct socket * sock,
1367 struct sockaddr * address, int addrlen);
1368 int (*socket_listen) (struct socket * sock, int backlog);
1369 int (*socket_accept) (struct socket * sock, struct socket * newsock);
1370 void (*socket_post_accept) (struct socket * sock,
1371 struct socket * newsock);
1372 int (*socket_sendmsg) (struct socket * sock,
1373 struct msghdr * msg, int size);
1374 int (*socket_recvmsg) (struct socket * sock,
1375 struct msghdr * msg, int size, int flags);
1376 int (*socket_getsockname) (struct socket * sock);
1377 int (*socket_getpeername) (struct socket * sock);
1378 int (*socket_getsockopt) (struct socket * sock, int level, int optname);
1379 int (*socket_setsockopt) (struct socket * sock, int level, int optname);
1380 int (*socket_shutdown) (struct socket * sock, int how);
1381 int (*socket_sock_rcv_skb) (struct sock * sk, struct sk_buff * skb);
1382 int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
1383 int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
1384 int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
1385 void (*sk_free_security) (struct sock *sk);
1386 void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
1387 void (*sk_getsecid) (struct sock *sk, u32 *secid);
1388 void (*sock_graft)(struct sock* sk, struct socket *parent);
1389 int (*inet_conn_request)(struct sock *sk, struct sk_buff *skb,
1390 struct request_sock *req);
1391 void (*inet_csk_clone)(struct sock *newsk, const struct request_sock *req);
1392 void (*inet_conn_established)(struct sock *sk, struct sk_buff *skb);
1393 void (*req_classify_flow)(const struct request_sock *req, struct flowi *fl);
1394 #endif /* CONFIG_SECURITY_NETWORK */
1396 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1397 int (*xfrm_policy_alloc_security) (struct xfrm_policy *xp,
1398 struct xfrm_user_sec_ctx *sec_ctx);
1399 int (*xfrm_policy_clone_security) (struct xfrm_policy *old, struct xfrm_policy *new);
1400 void (*xfrm_policy_free_security) (struct xfrm_policy *xp);
1401 int (*xfrm_policy_delete_security) (struct xfrm_policy *xp);
1402 int (*xfrm_state_alloc_security) (struct xfrm_state *x,
1403 struct xfrm_user_sec_ctx *sec_ctx,
1405 void (*xfrm_state_free_security) (struct xfrm_state *x);
1406 int (*xfrm_state_delete_security) (struct xfrm_state *x);
1407 int (*xfrm_policy_lookup)(struct xfrm_policy *xp, u32 fl_secid, u8 dir);
1408 int (*xfrm_state_pol_flow_match)(struct xfrm_state *x,
1409 struct xfrm_policy *xp, struct flowi *fl);
1410 int (*xfrm_decode_session)(struct sk_buff *skb, u32 *secid, int ckall);
1411 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1413 /* key management security hooks */
1415 int (*key_alloc)(struct key *key, struct task_struct *tsk, unsigned long flags);
1416 void (*key_free)(struct key *key);
1417 int (*key_permission)(key_ref_t key_ref,
1418 struct task_struct *context,
1421 #endif /* CONFIG_KEYS */
1426 extern int security_init (void);
1427 extern int register_security (struct security_operations *ops);
1428 extern int mod_reg_security (const char *name, struct security_operations *ops);
1429 extern struct dentry *securityfs_create_file(const char *name, mode_t mode,
1430 struct dentry *parent, void *data,
1431 const struct file_operations *fops);
1432 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
1433 extern void securityfs_remove(struct dentry *dentry);
1436 /* Security operations */
1437 int security_ptrace(struct task_struct *parent, struct task_struct *child);
1438 int security_capget(struct task_struct *target,
1439 kernel_cap_t *effective,
1440 kernel_cap_t *inheritable,
1441 kernel_cap_t *permitted);
1442 int security_capset_check(struct task_struct *target,
1443 kernel_cap_t *effective,
1444 kernel_cap_t *inheritable,
1445 kernel_cap_t *permitted);
1446 void security_capset_set(struct task_struct *target,
1447 kernel_cap_t *effective,
1448 kernel_cap_t *inheritable,
1449 kernel_cap_t *permitted);
1450 int security_capable(struct task_struct *tsk, int cap);
1451 int security_acct(struct file *file);
1452 int security_sysctl(struct ctl_table *table, int op);
1453 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
1454 int security_quota_on(struct dentry *dentry);
1455 int security_syslog(int type);
1456 int security_settime(struct timespec *ts, struct timezone *tz);
1457 int security_vm_enough_memory(long pages);
1458 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
1459 int security_bprm_alloc(struct linux_binprm *bprm);
1460 void security_bprm_free(struct linux_binprm *bprm);
1461 void security_bprm_apply_creds(struct linux_binprm *bprm, int unsafe);
1462 void security_bprm_post_apply_creds(struct linux_binprm *bprm);
1463 int security_bprm_set(struct linux_binprm *bprm);
1464 int security_bprm_check(struct linux_binprm *bprm);
1465 int security_bprm_secureexec(struct linux_binprm *bprm);
1466 int security_sb_alloc(struct super_block *sb);
1467 void security_sb_free(struct super_block *sb);
1468 int security_sb_copy_data(struct file_system_type *type, void *orig, void *copy);
1469 int security_sb_kern_mount(struct super_block *sb, void *data);
1470 int security_sb_statfs(struct dentry *dentry);
1471 int security_sb_mount(char *dev_name, struct nameidata *nd,
1472 char *type, unsigned long flags, void *data);
1473 int security_sb_check_sb(struct vfsmount *mnt, struct nameidata *nd);
1474 int security_sb_umount(struct vfsmount *mnt, int flags);
1475 void security_sb_umount_close(struct vfsmount *mnt);
1476 void security_sb_umount_busy(struct vfsmount *mnt);
1477 void security_sb_post_remount(struct vfsmount *mnt, unsigned long flags, void *data);
1478 void security_sb_post_mountroot(void);
1479 void security_sb_post_addmount(struct vfsmount *mnt, struct nameidata *mountpoint_nd);
1480 int security_sb_pivotroot(struct nameidata *old_nd, struct nameidata *new_nd);
1481 void security_sb_post_pivotroot(struct nameidata *old_nd, struct nameidata *new_nd);
1482 int security_inode_alloc(struct inode *inode);
1483 void security_inode_free(struct inode *inode);
1484 int security_inode_init_security(struct inode *inode, struct inode *dir,
1485 char **name, void **value, size_t *len);
1486 int security_inode_create(struct inode *dir, struct dentry *dentry, int mode);
1487 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1488 struct dentry *new_dentry);
1489 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
1490 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
1491 const char *old_name);
1492 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode);
1493 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
1494 int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev);
1495 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
1496 struct inode *new_dir, struct dentry *new_dentry);
1497 int security_inode_readlink(struct dentry *dentry);
1498 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
1499 int security_inode_permission(struct inode *inode, int mask, struct nameidata *nd);
1500 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
1501 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
1502 void security_inode_delete(struct inode *inode);
1503 int security_inode_setxattr(struct dentry *dentry, char *name,
1504 void *value, size_t size, int flags);
1505 void security_inode_post_setxattr(struct dentry *dentry, char *name,
1506 void *value, size_t size, int flags);
1507 int security_inode_getxattr(struct dentry *dentry, char *name);
1508 int security_inode_listxattr(struct dentry *dentry);
1509 int security_inode_removexattr(struct dentry *dentry, char *name);
1510 int security_inode_need_killpriv(struct dentry *dentry);
1511 int security_inode_killpriv(struct dentry *dentry);
1512 int security_inode_getsecurity(const struct inode *inode, const char *name, void *buffer, size_t size, int err);
1513 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1514 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
1515 int security_file_permission(struct file *file, int mask);
1516 int security_file_alloc(struct file *file);
1517 void security_file_free(struct file *file);
1518 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
1519 int security_file_mmap(struct file *file, unsigned long reqprot,
1520 unsigned long prot, unsigned long flags,
1521 unsigned long addr, unsigned long addr_only);
1522 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1523 unsigned long prot);
1524 int security_file_lock(struct file *file, unsigned int cmd);
1525 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
1526 int security_file_set_fowner(struct file *file);
1527 int security_file_send_sigiotask(struct task_struct *tsk,
1528 struct fown_struct *fown, int sig);
1529 int security_file_receive(struct file *file);
1530 int security_dentry_open(struct file *file);
1531 int security_task_create(unsigned long clone_flags);
1532 int security_task_alloc(struct task_struct *p);
1533 void security_task_free(struct task_struct *p);
1534 int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags);
1535 int security_task_post_setuid(uid_t old_ruid, uid_t old_euid,
1536 uid_t old_suid, int flags);
1537 int security_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags);
1538 int security_task_setpgid(struct task_struct *p, pid_t pgid);
1539 int security_task_getpgid(struct task_struct *p);
1540 int security_task_getsid(struct task_struct *p);
1541 void security_task_getsecid(struct task_struct *p, u32 *secid);
1542 int security_task_setgroups(struct group_info *group_info);
1543 int security_task_setnice(struct task_struct *p, int nice);
1544 int security_task_setioprio(struct task_struct *p, int ioprio);
1545 int security_task_getioprio(struct task_struct *p);
1546 int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim);
1547 int security_task_setscheduler(struct task_struct *p,
1548 int policy, struct sched_param *lp);
1549 int security_task_getscheduler(struct task_struct *p);
1550 int security_task_movememory(struct task_struct *p);
1551 int security_task_kill(struct task_struct *p, struct siginfo *info,
1552 int sig, u32 secid);
1553 int security_task_wait(struct task_struct *p);
1554 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1555 unsigned long arg4, unsigned long arg5);
1556 void security_task_reparent_to_init(struct task_struct *p);
1557 void security_task_to_inode(struct task_struct *p, struct inode *inode);
1558 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
1559 int security_msg_msg_alloc(struct msg_msg *msg);
1560 void security_msg_msg_free(struct msg_msg *msg);
1561 int security_msg_queue_alloc(struct msg_queue *msq);
1562 void security_msg_queue_free(struct msg_queue *msq);
1563 int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
1564 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
1565 int security_msg_queue_msgsnd(struct msg_queue *msq,
1566 struct msg_msg *msg, int msqflg);
1567 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1568 struct task_struct *target, long type, int mode);
1569 int security_shm_alloc(struct shmid_kernel *shp);
1570 void security_shm_free(struct shmid_kernel *shp);
1571 int security_shm_associate(struct shmid_kernel *shp, int shmflg);
1572 int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
1573 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
1574 int security_sem_alloc(struct sem_array *sma);
1575 void security_sem_free(struct sem_array *sma);
1576 int security_sem_associate(struct sem_array *sma, int semflg);
1577 int security_sem_semctl(struct sem_array *sma, int cmd);
1578 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1579 unsigned nsops, int alter);
1580 void security_d_instantiate (struct dentry *dentry, struct inode *inode);
1581 int security_getprocattr(struct task_struct *p, char *name, char **value);
1582 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
1583 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
1584 int security_netlink_recv(struct sk_buff *skb, int cap);
1585 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
1586 void security_release_secctx(char *secdata, u32 seclen);
1588 #else /* CONFIG_SECURITY */
1591 * This is the default capabilities functionality. Most of these functions
1592 * are just stubbed out, but a few must call the proper capable code.
1595 static inline int security_init(void)
1600 static inline int security_ptrace (struct task_struct *parent, struct task_struct * child)
1602 return cap_ptrace (parent, child);
1605 static inline int security_capget (struct task_struct *target,
1606 kernel_cap_t *effective,
1607 kernel_cap_t *inheritable,
1608 kernel_cap_t *permitted)
1610 return cap_capget (target, effective, inheritable, permitted);
1613 static inline int security_capset_check (struct task_struct *target,
1614 kernel_cap_t *effective,
1615 kernel_cap_t *inheritable,
1616 kernel_cap_t *permitted)
1618 return cap_capset_check (target, effective, inheritable, permitted);
1621 static inline void security_capset_set (struct task_struct *target,
1622 kernel_cap_t *effective,
1623 kernel_cap_t *inheritable,
1624 kernel_cap_t *permitted)
1626 cap_capset_set (target, effective, inheritable, permitted);
1629 static inline int security_capable(struct task_struct *tsk, int cap)
1631 return cap_capable(tsk, cap);
1634 static inline int security_acct (struct file *file)
1639 static inline int security_sysctl(struct ctl_table *table, int op)
1644 static inline int security_quotactl (int cmds, int type, int id,
1645 struct super_block * sb)
1650 static inline int security_quota_on (struct dentry * dentry)
1655 static inline int security_syslog(int type)
1657 return cap_syslog(type);
1660 static inline int security_settime(struct timespec *ts, struct timezone *tz)
1662 return cap_settime(ts, tz);
1665 static inline int security_vm_enough_memory(long pages)
1667 return cap_vm_enough_memory(current->mm, pages);
1670 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
1672 return cap_vm_enough_memory(mm, pages);
1675 static inline int security_bprm_alloc (struct linux_binprm *bprm)
1680 static inline void security_bprm_free (struct linux_binprm *bprm)
1683 static inline void security_bprm_apply_creds (struct linux_binprm *bprm, int unsafe)
1685 cap_bprm_apply_creds (bprm, unsafe);
1688 static inline void security_bprm_post_apply_creds (struct linux_binprm *bprm)
1693 static inline int security_bprm_set (struct linux_binprm *bprm)
1695 return cap_bprm_set_security (bprm);
1698 static inline int security_bprm_check (struct linux_binprm *bprm)
1703 static inline int security_bprm_secureexec (struct linux_binprm *bprm)
1705 return cap_bprm_secureexec(bprm);
1708 static inline int security_sb_alloc (struct super_block *sb)
1713 static inline void security_sb_free (struct super_block *sb)
1716 static inline int security_sb_copy_data (struct file_system_type *type,
1717 void *orig, void *copy)
1722 static inline int security_sb_kern_mount (struct super_block *sb, void *data)
1727 static inline int security_sb_statfs (struct dentry *dentry)
1732 static inline int security_sb_mount (char *dev_name, struct nameidata *nd,
1733 char *type, unsigned long flags,
1739 static inline int security_sb_check_sb (struct vfsmount *mnt,
1740 struct nameidata *nd)
1745 static inline int security_sb_umount (struct vfsmount *mnt, int flags)
1750 static inline void security_sb_umount_close (struct vfsmount *mnt)
1753 static inline void security_sb_umount_busy (struct vfsmount *mnt)
1756 static inline void security_sb_post_remount (struct vfsmount *mnt,
1757 unsigned long flags, void *data)
1760 static inline void security_sb_post_mountroot (void)
1763 static inline void security_sb_post_addmount (struct vfsmount *mnt,
1764 struct nameidata *mountpoint_nd)
1767 static inline int security_sb_pivotroot (struct nameidata *old_nd,
1768 struct nameidata *new_nd)
1773 static inline void security_sb_post_pivotroot (struct nameidata *old_nd,
1774 struct nameidata *new_nd)
1777 static inline int security_inode_alloc (struct inode *inode)
1782 static inline void security_inode_free (struct inode *inode)
1785 static inline int security_inode_init_security (struct inode *inode,
1794 static inline int security_inode_create (struct inode *dir,
1795 struct dentry *dentry,
1801 static inline int security_inode_link (struct dentry *old_dentry,
1803 struct dentry *new_dentry)
1808 static inline int security_inode_unlink (struct inode *dir,
1809 struct dentry *dentry)
1814 static inline int security_inode_symlink (struct inode *dir,
1815 struct dentry *dentry,
1816 const char *old_name)
1821 static inline int security_inode_mkdir (struct inode *dir,
1822 struct dentry *dentry,
1828 static inline int security_inode_rmdir (struct inode *dir,
1829 struct dentry *dentry)
1834 static inline int security_inode_mknod (struct inode *dir,
1835 struct dentry *dentry,
1836 int mode, dev_t dev)
1841 static inline int security_inode_rename (struct inode *old_dir,
1842 struct dentry *old_dentry,
1843 struct inode *new_dir,
1844 struct dentry *new_dentry)
1849 static inline int security_inode_readlink (struct dentry *dentry)
1854 static inline int security_inode_follow_link (struct dentry *dentry,
1855 struct nameidata *nd)
1860 static inline int security_inode_permission (struct inode *inode, int mask,
1861 struct nameidata *nd)
1866 static inline int security_inode_setattr (struct dentry *dentry,
1872 static inline int security_inode_getattr (struct vfsmount *mnt,
1873 struct dentry *dentry)
1878 static inline void security_inode_delete (struct inode *inode)
1881 static inline int security_inode_setxattr (struct dentry *dentry, char *name,
1882 void *value, size_t size, int flags)
1884 return cap_inode_setxattr(dentry, name, value, size, flags);
1887 static inline void security_inode_post_setxattr (struct dentry *dentry, char *name,
1888 void *value, size_t size, int flags)
1891 static inline int security_inode_getxattr (struct dentry *dentry, char *name)
1896 static inline int security_inode_listxattr (struct dentry *dentry)
1901 static inline int security_inode_removexattr (struct dentry *dentry, char *name)
1903 return cap_inode_removexattr(dentry, name);
1906 static inline int security_inode_need_killpriv(struct dentry *dentry)
1908 return cap_inode_need_killpriv(dentry);
1911 static inline int security_inode_killpriv(struct dentry *dentry)
1913 return cap_inode_killpriv(dentry);
1916 static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void *buffer, size_t size, int err)
1921 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
1926 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
1931 static inline int security_file_permission (struct file *file, int mask)
1936 static inline int security_file_alloc (struct file *file)
1941 static inline void security_file_free (struct file *file)
1944 static inline int security_file_ioctl (struct file *file, unsigned int cmd,
1950 static inline int security_file_mmap (struct file *file, unsigned long reqprot,
1952 unsigned long flags,
1954 unsigned long addr_only)
1959 static inline int security_file_mprotect (struct vm_area_struct *vma,
1960 unsigned long reqprot,
1966 static inline int security_file_lock (struct file *file, unsigned int cmd)
1971 static inline int security_file_fcntl (struct file *file, unsigned int cmd,
1977 static inline int security_file_set_fowner (struct file *file)
1982 static inline int security_file_send_sigiotask (struct task_struct *tsk,
1983 struct fown_struct *fown,
1989 static inline int security_file_receive (struct file *file)
1994 static inline int security_dentry_open (struct file *file)
1999 static inline int security_task_create (unsigned long clone_flags)
2004 static inline int security_task_alloc (struct task_struct *p)
2009 static inline void security_task_free (struct task_struct *p)
2012 static inline int security_task_setuid (uid_t id0, uid_t id1, uid_t id2,
2018 static inline int security_task_post_setuid (uid_t old_ruid, uid_t old_euid,
2019 uid_t old_suid, int flags)
2021 return cap_task_post_setuid (old_ruid, old_euid, old_suid, flags);
2024 static inline int security_task_setgid (gid_t id0, gid_t id1, gid_t id2,
2030 static inline int security_task_setpgid (struct task_struct *p, pid_t pgid)
2035 static inline int security_task_getpgid (struct task_struct *p)
2040 static inline int security_task_getsid (struct task_struct *p)
2045 static inline void security_task_getsecid (struct task_struct *p, u32 *secid)
2048 static inline int security_task_setgroups (struct group_info *group_info)
2053 static inline int security_task_setnice (struct task_struct *p, int nice)
2055 return cap_task_setnice(p, nice);
2058 static inline int security_task_setioprio (struct task_struct *p, int ioprio)
2060 return cap_task_setioprio(p, ioprio);
2063 static inline int security_task_getioprio (struct task_struct *p)
2068 static inline int security_task_setrlimit (unsigned int resource,
2069 struct rlimit *new_rlim)
2074 static inline int security_task_setscheduler (struct task_struct *p,
2076 struct sched_param *lp)
2078 return cap_task_setscheduler(p, policy, lp);
2081 static inline int security_task_getscheduler (struct task_struct *p)
2086 static inline int security_task_movememory (struct task_struct *p)
2091 static inline int security_task_kill (struct task_struct *p,
2092 struct siginfo *info, int sig,
2095 return cap_task_kill(p, info, sig, secid);
2098 static inline int security_task_wait (struct task_struct *p)
2103 static inline int security_task_prctl (int option, unsigned long arg2,
2111 static inline void security_task_reparent_to_init (struct task_struct *p)
2113 cap_task_reparent_to_init (p);
2116 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
2119 static inline int security_ipc_permission (struct kern_ipc_perm *ipcp,
2125 static inline int security_msg_msg_alloc (struct msg_msg * msg)
2130 static inline void security_msg_msg_free (struct msg_msg * msg)
2133 static inline int security_msg_queue_alloc (struct msg_queue *msq)
2138 static inline void security_msg_queue_free (struct msg_queue *msq)
2141 static inline int security_msg_queue_associate (struct msg_queue * msq,
2147 static inline int security_msg_queue_msgctl (struct msg_queue * msq, int cmd)
2152 static inline int security_msg_queue_msgsnd (struct msg_queue * msq,
2153 struct msg_msg * msg, int msqflg)
2158 static inline int security_msg_queue_msgrcv (struct msg_queue * msq,
2159 struct msg_msg * msg,
2160 struct task_struct * target,
2161 long type, int mode)
2166 static inline int security_shm_alloc (struct shmid_kernel *shp)
2171 static inline void security_shm_free (struct shmid_kernel *shp)
2174 static inline int security_shm_associate (struct shmid_kernel * shp,
2180 static inline int security_shm_shmctl (struct shmid_kernel * shp, int cmd)
2185 static inline int security_shm_shmat (struct shmid_kernel * shp,
2186 char __user *shmaddr, int shmflg)
2191 static inline int security_sem_alloc (struct sem_array *sma)
2196 static inline void security_sem_free (struct sem_array *sma)
2199 static inline int security_sem_associate (struct sem_array * sma, int semflg)
2204 static inline int security_sem_semctl (struct sem_array * sma, int cmd)
2209 static inline int security_sem_semop (struct sem_array * sma,
2210 struct sembuf * sops, unsigned nsops,
2216 static inline void security_d_instantiate (struct dentry *dentry, struct inode *inode)
2219 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
2224 static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2229 static inline int security_netlink_send (struct sock *sk, struct sk_buff *skb)
2231 return cap_netlink_send (sk, skb);
2234 static inline int security_netlink_recv (struct sk_buff *skb, int cap)
2236 return cap_netlink_recv (skb, cap);
2239 static inline struct dentry *securityfs_create_dir(const char *name,
2240 struct dentry *parent)
2242 return ERR_PTR(-ENODEV);
2245 static inline struct dentry *securityfs_create_file(const char *name,
2247 struct dentry *parent,
2249 struct file_operations *fops)
2251 return ERR_PTR(-ENODEV);
2254 static inline void securityfs_remove(struct dentry *dentry)
2258 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2263 static inline void security_release_secctx(char *secdata, u32 seclen)
2266 #endif /* CONFIG_SECURITY */
2268 #ifdef CONFIG_SECURITY_NETWORK
2270 int security_unix_stream_connect(struct socket *sock, struct socket *other,
2271 struct sock *newsk);
2272 int security_unix_may_send(struct socket *sock, struct socket *other);
2273 int security_socket_create(int family, int type, int protocol, int kern);
2274 int security_socket_post_create(struct socket *sock, int family,
2275 int type, int protocol, int kern);
2276 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
2277 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
2278 int security_socket_listen(struct socket *sock, int backlog);
2279 int security_socket_accept(struct socket *sock, struct socket *newsock);
2280 void security_socket_post_accept(struct socket *sock, struct socket *newsock);
2281 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
2282 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2283 int size, int flags);
2284 int security_socket_getsockname(struct socket *sock);
2285 int security_socket_getpeername(struct socket *sock);
2286 int security_socket_getsockopt(struct socket *sock, int level, int optname);
2287 int security_socket_setsockopt(struct socket *sock, int level, int optname);
2288 int security_socket_shutdown(struct socket *sock, int how);
2289 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
2290 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2291 int __user *optlen, unsigned len);
2292 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
2293 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
2294 void security_sk_free(struct sock *sk);
2295 void security_sk_clone(const struct sock *sk, struct sock *newsk);
2296 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
2297 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
2298 void security_sock_graft(struct sock*sk, struct socket *parent);
2299 int security_inet_conn_request(struct sock *sk,
2300 struct sk_buff *skb, struct request_sock *req);
2301 void security_inet_csk_clone(struct sock *newsk,
2302 const struct request_sock *req);
2303 void security_inet_conn_established(struct sock *sk,
2304 struct sk_buff *skb);
2306 #else /* CONFIG_SECURITY_NETWORK */
2307 static inline int security_unix_stream_connect(struct socket * sock,
2308 struct socket * other,
2309 struct sock * newsk)
2314 static inline int security_unix_may_send(struct socket * sock,
2315 struct socket * other)
2320 static inline int security_socket_create (int family, int type,
2321 int protocol, int kern)
2326 static inline int security_socket_post_create(struct socket * sock,
2329 int protocol, int kern)
2334 static inline int security_socket_bind(struct socket * sock,
2335 struct sockaddr * address,
2341 static inline int security_socket_connect(struct socket * sock,
2342 struct sockaddr * address,
2348 static inline int security_socket_listen(struct socket * sock, int backlog)
2353 static inline int security_socket_accept(struct socket * sock,
2354 struct socket * newsock)
2359 static inline void security_socket_post_accept(struct socket * sock,
2360 struct socket * newsock)
2364 static inline int security_socket_sendmsg(struct socket * sock,
2365 struct msghdr * msg, int size)
2370 static inline int security_socket_recvmsg(struct socket * sock,
2371 struct msghdr * msg, int size,
2377 static inline int security_socket_getsockname(struct socket * sock)
2382 static inline int security_socket_getpeername(struct socket * sock)
2387 static inline int security_socket_getsockopt(struct socket * sock,
2388 int level, int optname)
2393 static inline int security_socket_setsockopt(struct socket * sock,
2394 int level, int optname)
2399 static inline int security_socket_shutdown(struct socket * sock, int how)
2403 static inline int security_sock_rcv_skb (struct sock * sk,
2404 struct sk_buff * skb)
2409 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2410 int __user *optlen, unsigned len)
2412 return -ENOPROTOOPT;
2415 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
2417 return -ENOPROTOOPT;
2420 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2425 static inline void security_sk_free(struct sock *sk)
2429 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
2433 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
2437 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2441 static inline void security_sock_graft(struct sock* sk, struct socket *parent)
2445 static inline int security_inet_conn_request(struct sock *sk,
2446 struct sk_buff *skb, struct request_sock *req)
2451 static inline void security_inet_csk_clone(struct sock *newsk,
2452 const struct request_sock *req)
2456 static inline void security_inet_conn_established(struct sock *sk,
2457 struct sk_buff *skb)
2460 #endif /* CONFIG_SECURITY_NETWORK */
2462 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2464 int security_xfrm_policy_alloc(struct xfrm_policy *xp, struct xfrm_user_sec_ctx *sec_ctx);
2465 int security_xfrm_policy_clone(struct xfrm_policy *old, struct xfrm_policy *new);
2466 void security_xfrm_policy_free(struct xfrm_policy *xp);
2467 int security_xfrm_policy_delete(struct xfrm_policy *xp);
2468 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
2469 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2470 struct xfrm_sec_ctx *polsec, u32 secid);
2471 int security_xfrm_state_delete(struct xfrm_state *x);
2472 void security_xfrm_state_free(struct xfrm_state *x);
2473 int security_xfrm_policy_lookup(struct xfrm_policy *xp, u32 fl_secid, u8 dir);
2474 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2475 struct xfrm_policy *xp, struct flowi *fl);
2476 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
2477 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
2479 #else /* CONFIG_SECURITY_NETWORK_XFRM */
2481 static inline int security_xfrm_policy_alloc(struct xfrm_policy *xp, struct xfrm_user_sec_ctx *sec_ctx)
2486 static inline int security_xfrm_policy_clone(struct xfrm_policy *old, struct xfrm_policy *new)
2491 static inline void security_xfrm_policy_free(struct xfrm_policy *xp)
2495 static inline int security_xfrm_policy_delete(struct xfrm_policy *xp)
2500 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
2501 struct xfrm_user_sec_ctx *sec_ctx)
2506 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2507 struct xfrm_sec_ctx *polsec, u32 secid)
2512 static inline void security_xfrm_state_free(struct xfrm_state *x)
2516 static inline int security_xfrm_state_delete(struct xfrm_state *x)
2521 static inline int security_xfrm_policy_lookup(struct xfrm_policy *xp, u32 fl_secid, u8 dir)
2526 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2527 struct xfrm_policy *xp, struct flowi *fl)
2532 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
2537 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2541 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2544 #ifdef CONFIG_SECURITY
2546 int security_key_alloc(struct key *key, struct task_struct *tsk, unsigned long flags);
2547 void security_key_free(struct key *key);
2548 int security_key_permission(key_ref_t key_ref,
2549 struct task_struct *context, key_perm_t perm);
2553 static inline int security_key_alloc(struct key *key,
2554 struct task_struct *tsk,
2555 unsigned long flags)
2560 static inline void security_key_free(struct key *key)
2564 static inline int security_key_permission(key_ref_t key_ref,
2565 struct task_struct *context,
2572 #endif /* CONFIG_KEYS */
2574 #endif /* ! __LINUX_SECURITY_H */