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>
38 * These functions are in security/capability.c and are used
39 * as the default capabilities functions
41 extern int cap_capable (struct task_struct *tsk, int cap);
42 extern int cap_settime (struct timespec *ts, struct timezone *tz);
43 extern int cap_ptrace (struct task_struct *parent, struct task_struct *child);
44 extern int cap_capget (struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
45 extern int cap_capset_check (struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
46 extern void cap_capset_set (struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
47 extern int cap_bprm_set_security (struct linux_binprm *bprm);
48 extern void cap_bprm_apply_creds (struct linux_binprm *bprm, int unsafe);
49 extern int cap_bprm_secureexec(struct linux_binprm *bprm);
50 extern int cap_inode_setxattr(struct dentry *dentry, char *name, void *value, size_t size, int flags);
51 extern int cap_inode_removexattr(struct dentry *dentry, char *name);
52 extern int cap_task_post_setuid (uid_t old_ruid, uid_t old_euid, uid_t old_suid, int flags);
53 extern void cap_task_reparent_to_init (struct task_struct *p);
54 extern int cap_syslog (int type);
55 extern int cap_vm_enough_memory (long pages);
67 struct xfrm_user_sec_ctx;
69 extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
70 extern int cap_netlink_recv(struct sk_buff *skb);
73 * Values used in the task_security_ops calls
75 /* setuid or setgid, id0 == uid or gid */
76 #define LSM_SETID_ID 1
78 /* setreuid or setregid, id0 == real, id1 == eff */
79 #define LSM_SETID_RE 2
81 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
82 #define LSM_SETID_RES 4
84 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
85 #define LSM_SETID_FS 8
87 /* forward declares to avoid warnings */
90 struct swap_info_struct;
92 /* bprm_apply_creds unsafe reasons */
93 #define LSM_UNSAFE_SHARE 1
94 #define LSM_UNSAFE_PTRACE 2
95 #define LSM_UNSAFE_PTRACE_CAP 4
97 #ifdef CONFIG_SECURITY
100 * struct security_operations - main security structure
102 * Security hooks for program execution operations.
104 * @bprm_alloc_security:
105 * Allocate and attach a security structure to the @bprm->security field.
106 * The security field is initialized to NULL when the bprm structure is
108 * @bprm contains the linux_binprm structure to be modified.
109 * Return 0 if operation was successful.
110 * @bprm_free_security:
111 * @bprm contains the linux_binprm structure to be modified.
112 * Deallocate and clear the @bprm->security field.
114 * Compute and set the security attributes of a process being transformed
115 * by an execve operation based on the old attributes (current->security)
116 * and the information saved in @bprm->security by the set_security hook.
117 * Since this hook function (and its caller) are void, this hook can not
118 * return an error. However, it can leave the security attributes of the
119 * process unchanged if an access failure occurs at this point.
120 * bprm_apply_creds is called under task_lock. @unsafe indicates various
121 * reasons why it may be unsafe to change security state.
122 * @bprm contains the linux_binprm structure.
123 * @bprm_post_apply_creds:
124 * Runs after bprm_apply_creds with the task_lock dropped, so that
125 * functions which cannot be called safely under the task_lock can
126 * be used. This hook is a good place to perform state changes on
127 * the process such as closing open file descriptors to which access
128 * is no longer granted if the attributes were changed.
129 * Note that a security module might need to save state between
130 * bprm_apply_creds and bprm_post_apply_creds to store the decision
131 * on whether the process may proceed.
132 * @bprm contains the linux_binprm structure.
133 * @bprm_set_security:
134 * Save security information in the bprm->security field, typically based
135 * on information about the bprm->file, for later use by the apply_creds
136 * hook. This hook may also optionally check permissions (e.g. for
137 * transitions between security domains).
138 * This hook may be called multiple times during a single execve, e.g. for
139 * interpreters. The hook can tell whether it has already been called by
140 * checking to see if @bprm->security is non-NULL. If so, then the hook
141 * may decide either to retain the security information saved earlier or
143 * @bprm contains the linux_binprm structure.
144 * Return 0 if the hook is successful and permission is granted.
145 * @bprm_check_security:
146 * This hook mediates the point when a search for a binary handler will
147 * begin. It allows a check the @bprm->security value which is set in
148 * the preceding set_security call. The primary difference from
149 * set_security is that the argv list and envp list are reliably
150 * available in @bprm. This hook may be called multiple times
151 * during a single execve; and in each pass set_security is called
153 * @bprm contains the linux_binprm structure.
154 * Return 0 if the hook is successful and permission is granted.
156 * Return a boolean value (0 or 1) indicating whether a "secure exec"
157 * is required. The flag is passed in the auxiliary table
158 * on the initial stack to the ELF interpreter to indicate whether libc
159 * should enable secure mode.
160 * @bprm contains the linux_binprm structure.
162 * Security hooks for filesystem operations.
164 * @sb_alloc_security:
165 * Allocate and attach a security structure to the sb->s_security field.
166 * The s_security field is initialized to NULL when the structure is
168 * @sb contains the super_block structure to be modified.
169 * Return 0 if operation was successful.
171 * Deallocate and clear the sb->s_security field.
172 * @sb contains the super_block structure to be modified.
174 * Check permission before obtaining filesystem statistics for the @sb
176 * @sb contains the super_block structure for the filesystem.
177 * Return 0 if permission is granted.
179 * Check permission before an object specified by @dev_name is mounted on
180 * the mount point named by @nd. For an ordinary mount, @dev_name
181 * identifies a device if the file system type requires a device. For a
182 * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a
183 * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
184 * pathname of the object being mounted.
185 * @dev_name contains the name for object being mounted.
186 * @nd contains the nameidata structure for mount point object.
187 * @type contains the filesystem type.
188 * @flags contains the mount flags.
189 * @data contains the filesystem-specific data.
190 * Return 0 if permission is granted.
192 * Allow mount option data to be copied prior to parsing by the filesystem,
193 * so that the security module can extract security-specific mount
194 * options cleanly (a filesystem may modify the data e.g. with strsep()).
195 * This also allows the original mount data to be stripped of security-
196 * specific options to avoid having to make filesystems aware of them.
197 * @type the type of filesystem being mounted.
198 * @orig the original mount data copied from userspace.
199 * @copy copied data which will be passed to the security module.
200 * Returns 0 if the copy was successful.
202 * Check permission before the device with superblock @mnt->sb is mounted
203 * on the mount point named by @nd.
204 * @mnt contains the vfsmount for device being mounted.
205 * @nd contains the nameidata object for the mount point.
206 * Return 0 if permission is granted.
208 * Check permission before the @mnt file system is unmounted.
209 * @mnt contains the mounted file system.
210 * @flags contains the unmount flags, e.g. MNT_FORCE.
211 * Return 0 if permission is granted.
213 * Close any files in the @mnt mounted filesystem that are held open by
214 * the security module. This hook is called during an umount operation
215 * prior to checking whether the filesystem is still busy.
216 * @mnt contains the mounted filesystem.
218 * Handle a failed umount of the @mnt mounted filesystem, e.g. re-opening
219 * any files that were closed by umount_close. This hook is called during
220 * an umount operation if the umount fails after a call to the
222 * @mnt contains the mounted filesystem.
224 * Update the security module's state when a filesystem is remounted.
225 * This hook is only called if the remount was successful.
226 * @mnt contains the mounted file system.
227 * @flags contains the new filesystem flags.
228 * @data contains the filesystem-specific data.
229 * @sb_post_mountroot:
230 * Update the security module's state when the root filesystem is mounted.
231 * This hook is only called if the mount was successful.
233 * Update the security module's state when a filesystem is mounted.
234 * This hook is called any time a mount is successfully grafetd to
236 * @mnt contains the mounted filesystem.
237 * @mountpoint_nd contains the nameidata structure for the mount point.
239 * Check permission before pivoting the root filesystem.
240 * @old_nd contains the nameidata structure for the new location of the current root (put_old).
241 * @new_nd contains the nameidata structure for the new root (new_root).
242 * Return 0 if permission is granted.
243 * @sb_post_pivotroot:
244 * Update module state after a successful pivot.
245 * @old_nd contains the nameidata structure for the old root.
246 * @new_nd contains the nameidata structure for the new root.
248 * Security hooks for inode operations.
250 * @inode_alloc_security:
251 * Allocate and attach a security structure to @inode->i_security. The
252 * i_security field is initialized to NULL when the inode structure is
254 * @inode contains the inode structure.
255 * Return 0 if operation was successful.
256 * @inode_free_security:
257 * @inode contains the inode structure.
258 * Deallocate the inode security structure and set @inode->i_security to
260 * @inode_init_security:
261 * Obtain the security attribute name suffix and value to set on a newly
262 * created inode and set up the incore security field for the new inode.
263 * This hook is called by the fs code as part of the inode creation
264 * transaction and provides for atomic labeling of the inode, unlike
265 * the post_create/mkdir/... hooks called by the VFS. The hook function
266 * is expected to allocate the name and value via kmalloc, with the caller
267 * being responsible for calling kfree after using them.
268 * If the security module does not use security attributes or does
269 * not wish to put a security attribute on this particular inode,
270 * then it should return -EOPNOTSUPP to skip this processing.
271 * @inode contains the inode structure of the newly created inode.
272 * @dir contains the inode structure of the parent directory.
273 * @name will be set to the allocated name suffix (e.g. selinux).
274 * @value will be set to the allocated attribute value.
275 * @len will be set to the length of the value.
276 * Returns 0 if @name and @value have been successfully set,
277 * -EOPNOTSUPP if no security attribute is needed, or
278 * -ENOMEM on memory allocation failure.
280 * Check permission to create a regular file.
281 * @dir contains inode structure of the parent of the new file.
282 * @dentry contains the dentry structure for the file to be created.
283 * @mode contains the file mode of the file to be created.
284 * Return 0 if permission is granted.
286 * Check permission before creating a new hard link to a file.
287 * @old_dentry contains the dentry structure for an existing link to the file.
288 * @dir contains the inode structure of the parent directory of the new link.
289 * @new_dentry contains the dentry structure for the new link.
290 * Return 0 if permission is granted.
292 * Check the permission to remove a hard link to a file.
293 * @dir contains the inode structure of parent directory of the file.
294 * @dentry contains the dentry structure for file to be unlinked.
295 * Return 0 if permission is granted.
297 * Check the permission to create a symbolic link to a file.
298 * @dir contains the inode structure of parent directory of the symbolic link.
299 * @dentry contains the dentry structure of the symbolic link.
300 * @old_name contains the pathname of file.
301 * Return 0 if permission is granted.
303 * Check permissions to create a new directory in the existing directory
304 * associated with inode strcture @dir.
305 * @dir containst the inode structure of parent of the directory to be created.
306 * @dentry contains the dentry structure of new directory.
307 * @mode contains the mode of new directory.
308 * Return 0 if permission is granted.
310 * Check the permission to remove a directory.
311 * @dir contains the inode structure of parent of the directory to be removed.
312 * @dentry contains the dentry structure of directory to be removed.
313 * Return 0 if permission is granted.
315 * Check permissions when creating a special file (or a socket or a fifo
316 * file created via the mknod system call). Note that if mknod operation
317 * is being done for a regular file, then the create hook will be called
319 * @dir contains the inode structure of parent of the new file.
320 * @dentry contains the dentry structure of the new file.
321 * @mode contains the mode of the new file.
322 * @dev contains the the device number.
323 * Return 0 if permission is granted.
325 * Check for permission to rename a file or directory.
326 * @old_dir contains the inode structure for parent of the old link.
327 * @old_dentry contains the dentry structure of the old link.
328 * @new_dir contains the inode structure for parent of the new link.
329 * @new_dentry contains the dentry structure of the new link.
330 * Return 0 if permission is granted.
332 * Check the permission to read the symbolic link.
333 * @dentry contains the dentry structure for the file link.
334 * Return 0 if permission is granted.
335 * @inode_follow_link:
336 * Check permission to follow a symbolic link when looking up a pathname.
337 * @dentry contains the dentry structure for the link.
338 * @nd contains the nameidata structure for the parent directory.
339 * Return 0 if permission is granted.
341 * Check permission before accessing an inode. This hook is called by the
342 * existing Linux permission function, so a security module can use it to
343 * provide additional checking for existing Linux permission checks.
344 * Notice that this hook is called when a file is opened (as well as many
345 * other operations), whereas the file_security_ops permission hook is
346 * called when the actual read/write operations are performed.
347 * @inode contains the inode structure to check.
348 * @mask contains the permission mask.
349 * @nd contains the nameidata (may be NULL).
350 * Return 0 if permission is granted.
352 * Check permission before setting file attributes. Note that the kernel
353 * call to notify_change is performed from several locations, whenever
354 * file attributes change (such as when a file is truncated, chown/chmod
355 * operations, transferring disk quotas, etc).
356 * @dentry contains the dentry structure for the file.
357 * @attr is the iattr structure containing the new file attributes.
358 * Return 0 if permission is granted.
360 * Check permission before obtaining file attributes.
361 * @mnt is the vfsmount where the dentry was looked up
362 * @dentry contains the dentry structure for the file.
363 * Return 0 if permission is granted.
365 * @inode contains the inode structure for deleted inode.
366 * This hook is called when a deleted inode is released (i.e. an inode
367 * with no hard links has its use count drop to zero). A security module
368 * can use this hook to release any persistent label associated with the
371 * Check permission before setting the extended attributes
372 * @value identified by @name for @dentry.
373 * Return 0 if permission is granted.
374 * @inode_post_setxattr:
375 * Update inode security field after successful setxattr operation.
376 * @value identified by @name for @dentry.
378 * Check permission before obtaining the extended attributes
379 * identified by @name for @dentry.
380 * Return 0 if permission is granted.
382 * Check permission before obtaining the list of extended attribute
384 * Return 0 if permission is granted.
385 * @inode_removexattr:
386 * Check permission before removing the extended attribute
387 * identified by @name for @dentry.
388 * Return 0 if permission is granted.
389 * @inode_getsecurity:
390 * Copy the extended attribute representation of the security label
391 * associated with @name for @inode into @buffer. @buffer may be
392 * NULL to request the size of the buffer required. @size indicates
393 * the size of @buffer in bytes. Note that @name is the remainder
394 * of the attribute name after the security. prefix has been removed.
395 * @err is the return value from the preceding fs getxattr call,
396 * and can be used by the security module to determine whether it
397 * should try and canonicalize the attribute value.
398 * Return number of bytes used/required on success.
399 * @inode_setsecurity:
400 * Set the security label associated with @name for @inode from the
401 * extended attribute value @value. @size indicates the size of the
402 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
403 * Note that @name is the remainder of the attribute name after the
404 * security. prefix has been removed.
405 * Return 0 on success.
406 * @inode_listsecurity:
407 * Copy the extended attribute names for the security labels
408 * associated with @inode into @buffer. The maximum size of @buffer
409 * is specified by @buffer_size. @buffer may be NULL to request
410 * the size of the buffer required.
411 * Returns number of bytes used/required on success.
413 * Security hooks for file operations
416 * Check file permissions before accessing an open file. This hook is
417 * called by various operations that read or write files. A security
418 * module can use this hook to perform additional checking on these
419 * operations, e.g. to revalidate permissions on use to support privilege
420 * bracketing or policy changes. Notice that this hook is used when the
421 * actual read/write operations are performed, whereas the
422 * inode_security_ops hook is called when a file is opened (as well as
423 * many other operations).
424 * Caveat: Although this hook can be used to revalidate permissions for
425 * various system call operations that read or write files, it does not
426 * address the revalidation of permissions for memory-mapped files.
427 * Security modules must handle this separately if they need such
429 * @file contains the file structure being accessed.
430 * @mask contains the requested permissions.
431 * Return 0 if permission is granted.
432 * @file_alloc_security:
433 * Allocate and attach a security structure to the file->f_security field.
434 * The security field is initialized to NULL when the structure is first
436 * @file contains the file structure to secure.
437 * Return 0 if the hook is successful and permission is granted.
438 * @file_free_security:
439 * Deallocate and free any security structures stored in file->f_security.
440 * @file contains the file structure being modified.
442 * @file contains the file structure.
443 * @cmd contains the operation to perform.
444 * @arg contains the operational arguments.
445 * Check permission for an ioctl operation on @file. Note that @arg can
446 * sometimes represents a user space pointer; in other cases, it may be a
447 * simple integer value. When @arg represents a user space pointer, it
448 * should never be used by the security module.
449 * Return 0 if permission is granted.
451 * Check permissions for a mmap operation. The @file may be NULL, e.g.
452 * if mapping anonymous memory.
453 * @file contains the file structure for file to map (may be NULL).
454 * @reqprot contains the protection requested by the application.
455 * @prot contains the protection that will be applied by the kernel.
456 * @flags contains the operational flags.
457 * Return 0 if permission is granted.
459 * Check permissions before changing memory access permissions.
460 * @vma contains the memory region to modify.
461 * @reqprot contains the protection requested by the application.
462 * @prot contains the protection that will be applied by the kernel.
463 * Return 0 if permission is granted.
465 * Check permission before performing file locking operations.
466 * Note: this hook mediates both flock and fcntl style locks.
467 * @file contains the file structure.
468 * @cmd contains the posix-translated lock operation to perform
469 * (e.g. F_RDLCK, F_WRLCK).
470 * Return 0 if permission is granted.
472 * Check permission before allowing the file operation specified by @cmd
473 * from being performed on the file @file. Note that @arg can sometimes
474 * represents a user space pointer; in other cases, it may be a simple
475 * integer value. When @arg represents a user space pointer, it should
476 * never be used by the security module.
477 * @file contains the file structure.
478 * @cmd contains the operation to be performed.
479 * @arg contains the operational arguments.
480 * Return 0 if permission is granted.
482 * Save owner security information (typically from current->security) in
483 * file->f_security for later use by the send_sigiotask hook.
484 * @file contains the file structure to update.
485 * Return 0 on success.
486 * @file_send_sigiotask:
487 * Check permission for the file owner @fown to send SIGIO or SIGURG to the
488 * process @tsk. Note that this hook is sometimes called from interrupt.
489 * Note that the fown_struct, @fown, is never outside the context of a
490 * struct file, so the file structure (and associated security information)
491 * can always be obtained:
492 * (struct file *)((long)fown - offsetof(struct file,f_owner));
493 * @tsk contains the structure of task receiving signal.
494 * @fown contains the file owner information.
495 * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
496 * Return 0 if permission is granted.
498 * This hook allows security modules to control the ability of a process
499 * to receive an open file descriptor via socket IPC.
500 * @file contains the file structure being received.
501 * Return 0 if permission is granted.
503 * Security hooks for task operations.
506 * Check permission before creating a child process. See the clone(2)
507 * manual page for definitions of the @clone_flags.
508 * @clone_flags contains the flags indicating what should be shared.
509 * Return 0 if permission is granted.
510 * @task_alloc_security:
511 * @p contains the task_struct for child process.
512 * Allocate and attach a security structure to the p->security field. The
513 * security field is initialized to NULL when the task structure is
515 * Return 0 if operation was successful.
516 * @task_free_security:
517 * @p contains the task_struct for process.
518 * Deallocate and clear the p->security field.
520 * Check permission before setting one or more of the user identity
521 * attributes of the current process. The @flags parameter indicates
522 * which of the set*uid system calls invoked this hook and how to
523 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
524 * definitions at the beginning of this file for the @flags values and
526 * @id0 contains a uid.
527 * @id1 contains a uid.
528 * @id2 contains a uid.
529 * @flags contains one of the LSM_SETID_* values.
530 * Return 0 if permission is granted.
532 * Update the module's state after setting one or more of the user
533 * identity attributes of the current process. The @flags parameter
534 * indicates which of the set*uid system calls invoked this hook. If
535 * @flags is LSM_SETID_FS, then @old_ruid is the old fs uid and the other
536 * parameters are not used.
537 * @old_ruid contains the old real uid (or fs uid if LSM_SETID_FS).
538 * @old_euid contains the old effective uid (or -1 if LSM_SETID_FS).
539 * @old_suid contains the old saved uid (or -1 if LSM_SETID_FS).
540 * @flags contains one of the LSM_SETID_* values.
541 * Return 0 on success.
543 * Check permission before setting one or more of the group identity
544 * attributes of the current process. The @flags parameter indicates
545 * which of the set*gid system calls invoked this hook and how to
546 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
547 * definitions at the beginning of this file for the @flags values and
549 * @id0 contains a gid.
550 * @id1 contains a gid.
551 * @id2 contains a gid.
552 * @flags contains one of the LSM_SETID_* values.
553 * Return 0 if permission is granted.
555 * Check permission before setting the process group identifier of the
556 * process @p to @pgid.
557 * @p contains the task_struct for process being modified.
558 * @pgid contains the new pgid.
559 * Return 0 if permission is granted.
561 * Check permission before getting the process group identifier of the
563 * @p contains the task_struct for the process.
564 * Return 0 if permission is granted.
566 * Check permission before getting the session identifier of the process
568 * @p contains the task_struct for the process.
569 * Return 0 if permission is granted.
571 * Check permission before setting the supplementary group set of the
573 * @group_info contains the new group information.
574 * Return 0 if permission is granted.
576 * Check permission before setting the nice value of @p to @nice.
577 * @p contains the task_struct of process.
578 * @nice contains the new nice value.
579 * Return 0 if permission is granted.
581 * Check permission before setting the resource limits of the current
582 * process for @resource to @new_rlim. The old resource limit values can
583 * be examined by dereferencing (current->signal->rlim + resource).
584 * @resource contains the resource whose limit is being set.
585 * @new_rlim contains the new limits for @resource.
586 * Return 0 if permission is granted.
587 * @task_setscheduler:
588 * Check permission before setting scheduling policy and/or parameters of
589 * process @p based on @policy and @lp.
590 * @p contains the task_struct for process.
591 * @policy contains the scheduling policy.
592 * @lp contains the scheduling parameters.
593 * Return 0 if permission is granted.
594 * @task_getscheduler:
595 * Check permission before obtaining scheduling information for process
597 * @p contains the task_struct for process.
598 * Return 0 if permission is granted.
600 * Check permission before sending signal @sig to @p. @info can be NULL,
601 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
602 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
603 * from the kernel and should typically be permitted.
604 * SIGIO signals are handled separately by the send_sigiotask hook in
606 * @p contains the task_struct for process.
607 * @info contains the signal information.
608 * @sig contains the signal value.
609 * Return 0 if permission is granted.
611 * Check permission before allowing a process to reap a child process @p
612 * and collect its status information.
613 * @p contains the task_struct for process.
614 * Return 0 if permission is granted.
616 * Check permission before performing a process control operation on the
618 * @option contains the operation.
619 * @arg2 contains a argument.
620 * @arg3 contains a argument.
621 * @arg4 contains a argument.
622 * @arg5 contains a argument.
623 * Return 0 if permission is granted.
624 * @task_reparent_to_init:
625 * Set the security attributes in @p->security for a kernel thread that
626 * is being reparented to the init task.
627 * @p contains the task_struct for the kernel thread.
629 * Set the security attributes for an inode based on an associated task's
630 * security attributes, e.g. for /proc/pid inodes.
631 * @p contains the task_struct for the task.
632 * @inode contains the inode structure for the inode.
634 * Security hooks for Netlink messaging.
637 * Save security information for a netlink message so that permission
638 * checking can be performed when the message is processed. The security
639 * information can be saved using the eff_cap field of the
640 * netlink_skb_parms structure. Also may be used to provide fine
641 * grained control over message transmission.
642 * @sk associated sock of task sending the message.,
643 * @skb contains the sk_buff structure for the netlink message.
644 * Return 0 if the information was successfully saved and message
645 * is allowed to be transmitted.
647 * Check permission before processing the received netlink message in
649 * @skb contains the sk_buff structure for the netlink message.
650 * Return 0 if permission is granted.
652 * Security hooks for Unix domain networking.
654 * @unix_stream_connect:
655 * Check permissions before establishing a Unix domain stream connection
656 * between @sock and @other.
657 * @sock contains the socket structure.
658 * @other contains the peer socket structure.
659 * Return 0 if permission is granted.
661 * Check permissions before connecting or sending datagrams from @sock to
663 * @sock contains the socket structure.
664 * @sock contains the peer socket structure.
665 * Return 0 if permission is granted.
667 * The @unix_stream_connect and @unix_may_send hooks were necessary because
668 * Linux provides an alternative to the conventional file name space for Unix
669 * domain sockets. Whereas binding and connecting to sockets in the file name
670 * space is mediated by the typical file permissions (and caught by the mknod
671 * and permission hooks in inode_security_ops), binding and connecting to
672 * sockets in the abstract name space is completely unmediated. Sufficient
673 * control of Unix domain sockets in the abstract name space isn't possible
674 * using only the socket layer hooks, since we need to know the actual target
675 * socket, which is not looked up until we are inside the af_unix code.
677 * Security hooks for socket operations.
680 * Check permissions prior to creating a new socket.
681 * @family contains the requested protocol family.
682 * @type contains the requested communications type.
683 * @protocol contains the requested protocol.
684 * @kern set to 1 if a kernel socket.
685 * Return 0 if permission is granted.
686 * @socket_post_create:
687 * This hook allows a module to update or allocate a per-socket security
688 * structure. Note that the security field was not added directly to the
689 * socket structure, but rather, the socket security information is stored
690 * in the associated inode. Typically, the inode alloc_security hook will
691 * allocate and and attach security information to
692 * sock->inode->i_security. This hook may be used to update the
693 * sock->inode->i_security field with additional information that wasn't
694 * available when the inode was allocated.
695 * @sock contains the newly created socket structure.
696 * @family contains the requested protocol family.
697 * @type contains the requested communications type.
698 * @protocol contains the requested protocol.
699 * @kern set to 1 if a kernel socket.
701 * Check permission before socket protocol layer bind operation is
702 * performed and the socket @sock is bound to the address specified in the
703 * @address parameter.
704 * @sock contains the socket structure.
705 * @address contains the address to bind to.
706 * @addrlen contains the length of address.
707 * Return 0 if permission is granted.
709 * Check permission before socket protocol layer connect operation
710 * attempts to connect socket @sock to a remote address, @address.
711 * @sock contains the socket structure.
712 * @address contains the address of remote endpoint.
713 * @addrlen contains the length of address.
714 * Return 0 if permission is granted.
716 * Check permission before socket protocol layer listen operation.
717 * @sock contains the socket structure.
718 * @backlog contains the maximum length for the pending connection queue.
719 * Return 0 if permission is granted.
721 * Check permission before accepting a new connection. Note that the new
722 * socket, @newsock, has been created and some information copied to it,
723 * but the accept operation has not actually been performed.
724 * @sock contains the listening socket structure.
725 * @newsock contains the newly created server socket for connection.
726 * Return 0 if permission is granted.
727 * @socket_post_accept:
728 * This hook allows a security module to copy security
729 * information into the newly created socket's inode.
730 * @sock contains the listening socket structure.
731 * @newsock contains the newly created server socket for connection.
733 * Check permission before transmitting a message to another socket.
734 * @sock contains the socket structure.
735 * @msg contains the message to be transmitted.
736 * @size contains the size of message.
737 * Return 0 if permission is granted.
739 * Check permission before receiving a message from a socket.
740 * @sock contains the socket structure.
741 * @msg contains the message structure.
742 * @size contains the size of message structure.
743 * @flags contains the operational flags.
744 * Return 0 if permission is granted.
745 * @socket_getsockname:
746 * Check permission before the local address (name) of the socket object
747 * @sock is retrieved.
748 * @sock contains the socket structure.
749 * Return 0 if permission is granted.
750 * @socket_getpeername:
751 * Check permission before the remote address (name) of a socket object
752 * @sock is retrieved.
753 * @sock contains the socket structure.
754 * Return 0 if permission is granted.
755 * @socket_getsockopt:
756 * Check permissions before retrieving the options associated with socket
758 * @sock contains the socket structure.
759 * @level contains the protocol level to retrieve option from.
760 * @optname contains the name of option to retrieve.
761 * Return 0 if permission is granted.
762 * @socket_setsockopt:
763 * Check permissions before setting the options associated with socket
765 * @sock contains the socket structure.
766 * @level contains the protocol level to set options for.
767 * @optname contains the name of the option to set.
768 * Return 0 if permission is granted.
770 * Checks permission before all or part of a connection on the socket
771 * @sock is shut down.
772 * @sock contains the socket structure.
773 * @how contains the flag indicating how future sends and receives are handled.
774 * Return 0 if permission is granted.
775 * @socket_sock_rcv_skb:
776 * Check permissions on incoming network packets. This hook is distinct
777 * from Netfilter's IP input hooks since it is the first time that the
778 * incoming sk_buff @skb has been associated with a particular socket, @sk.
779 * @sk contains the sock (not socket) associated with the incoming sk_buff.
780 * @skb contains the incoming network data.
781 * @socket_getpeersec:
782 * This hook allows the security module to provide peer socket security
783 * state to userspace via getsockopt SO_GETPEERSEC.
784 * @sock is the local socket.
785 * @optval userspace memory where the security state is to be copied.
786 * @optlen userspace int where the module should copy the actual length
787 * of the security state.
788 * @len as input is the maximum length to copy to userspace provided
790 * Return 0 if all is well, otherwise, typical getsockopt return
792 * @sk_alloc_security:
793 * Allocate and attach a security structure to the sk->sk_security field,
794 * which is used to copy security attributes between local stream sockets.
796 * Deallocate security structure.
798 * Retrieve the LSM-specific sid for the sock to enable caching of network
801 * Security hooks for XFRM operations.
803 * @xfrm_policy_alloc_security:
804 * @xp contains the xfrm_policy being added to Security Policy Database
805 * used by the XFRM system.
806 * @sec_ctx contains the security context information being provided by
807 * the user-level policy update program (e.g., setkey).
808 * Allocate a security structure to the xp->security field.
809 * The security field is initialized to NULL when the xfrm_policy is
811 * Return 0 if operation was successful (memory to allocate, legal context)
812 * @xfrm_policy_clone_security:
813 * @old contains an existing xfrm_policy in the SPD.
814 * @new contains a new xfrm_policy being cloned from old.
815 * Allocate a security structure to the new->security field
816 * that contains the information from the old->security field.
817 * Return 0 if operation was successful (memory to allocate).
818 * @xfrm_policy_free_security:
819 * @xp contains the xfrm_policy
820 * Deallocate xp->security.
821 * @xfrm_policy_delete_security:
822 * @xp contains the xfrm_policy.
823 * Authorize deletion of xp->security.
824 * @xfrm_state_alloc_security:
825 * @x contains the xfrm_state being added to the Security Association
826 * Database by the XFRM system.
827 * @sec_ctx contains the security context information being provided by
828 * the user-level SA generation program (e.g., setkey or racoon).
829 * Allocate a security structure to the x->security field. The
830 * security field is initialized to NULL when the xfrm_state is
832 * Return 0 if operation was successful (memory to allocate, legal context).
833 * @xfrm_state_free_security:
834 * @x contains the xfrm_state.
835 * Deallocate x->security.
836 * @xfrm_state_delete_security:
837 * @x contains the xfrm_state.
838 * Authorize deletion of x->security.
839 * @xfrm_policy_lookup:
840 * @xp contains the xfrm_policy for which the access control is being
842 * @sk_sid contains the sock security label that is used to authorize
843 * access to the policy xp.
844 * @dir contains the direction of the flow (input or output).
845 * Check permission when a sock selects a xfrm_policy for processing
846 * XFRMs on a packet. The hook is called when selecting either a
847 * per-socket policy or a generic xfrm policy.
848 * Return 0 if permission is granted.
850 * Security hooks affecting all Key Management operations
853 * Permit allocation of a key and assign security data. Note that key does
854 * not have a serial number assigned at this point.
855 * @key points to the key.
856 * Return 0 if permission is granted, -ve error otherwise.
858 * Notification of destruction; free security data.
859 * @key points to the key.
862 * See whether a specific operational right is granted to a process on a
864 * @key_ref refers to the key (key pointer + possession attribute bit).
865 * @context points to the process to provide the context against which to
866 * evaluate the security data on the key.
867 * @perm describes the combination of permissions required of this key.
868 * Return 1 if permission granted, 0 if permission denied and -ve it the
869 * normal permissions model should be effected.
871 * Security hooks affecting all System V IPC operations.
874 * Check permissions for access to IPC
875 * @ipcp contains the kernel IPC permission structure
876 * @flag contains the desired (requested) permission set
877 * Return 0 if permission is granted.
879 * Security hooks for individual messages held in System V IPC message queues
880 * @msg_msg_alloc_security:
881 * Allocate and attach a security structure to the msg->security field.
882 * The security field is initialized to NULL when the structure is first
884 * @msg contains the message structure to be modified.
885 * Return 0 if operation was successful and permission is granted.
886 * @msg_msg_free_security:
887 * Deallocate the security structure for this message.
888 * @msg contains the message structure to be modified.
890 * Security hooks for System V IPC Message Queues
892 * @msg_queue_alloc_security:
893 * Allocate and attach a security structure to the
894 * msq->q_perm.security field. The security field is initialized to
895 * NULL when the structure is first created.
896 * @msq contains the message queue structure to be modified.
897 * Return 0 if operation was successful and permission is granted.
898 * @msg_queue_free_security:
899 * Deallocate security structure for this message queue.
900 * @msq contains the message queue structure to be modified.
901 * @msg_queue_associate:
902 * Check permission when a message queue is requested through the
903 * msgget system call. This hook is only called when returning the
904 * message queue identifier for an existing message queue, not when a
905 * new message queue is created.
906 * @msq contains the message queue to act upon.
907 * @msqflg contains the operation control flags.
908 * Return 0 if permission is granted.
910 * Check permission when a message control operation specified by @cmd
911 * is to be performed on the message queue @msq.
912 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
913 * @msq contains the message queue to act upon. May be NULL.
914 * @cmd contains the operation to be performed.
915 * Return 0 if permission is granted.
917 * Check permission before a message, @msg, is enqueued on the message
919 * @msq contains the message queue to send message to.
920 * @msg contains the message to be enqueued.
921 * @msqflg contains operational flags.
922 * Return 0 if permission is granted.
924 * Check permission before a message, @msg, is removed from the message
925 * queue, @msq. The @target task structure contains a pointer to the
926 * process that will be receiving the message (not equal to the current
927 * process when inline receives are being performed).
928 * @msq contains the message queue to retrieve message from.
929 * @msg contains the message destination.
930 * @target contains the task structure for recipient process.
931 * @type contains the type of message requested.
932 * @mode contains the operational flags.
933 * Return 0 if permission is granted.
935 * Security hooks for System V Shared Memory Segments
937 * @shm_alloc_security:
938 * Allocate and attach a security structure to the shp->shm_perm.security
939 * field. The security field is initialized to NULL when the structure is
941 * @shp contains the shared memory structure to be modified.
942 * Return 0 if operation was successful and permission is granted.
943 * @shm_free_security:
944 * Deallocate the security struct for this memory segment.
945 * @shp contains the shared memory structure to be modified.
947 * Check permission when a shared memory region is requested through the
948 * shmget system call. This hook is only called when returning the shared
949 * memory region identifier for an existing region, not when a new shared
950 * memory region is created.
951 * @shp contains the shared memory structure to be modified.
952 * @shmflg contains the operation control flags.
953 * Return 0 if permission is granted.
955 * Check permission when a shared memory control operation specified by
956 * @cmd is to be performed on the shared memory region @shp.
957 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
958 * @shp contains shared memory structure to be modified.
959 * @cmd contains the operation to be performed.
960 * Return 0 if permission is granted.
962 * Check permissions prior to allowing the shmat system call to attach the
963 * shared memory segment @shp to the data segment of the calling process.
964 * The attaching address is specified by @shmaddr.
965 * @shp contains the shared memory structure to be modified.
966 * @shmaddr contains the address to attach memory region to.
967 * @shmflg contains the operational flags.
968 * Return 0 if permission is granted.
970 * Security hooks for System V Semaphores
972 * @sem_alloc_security:
973 * Allocate and attach a security structure to the sma->sem_perm.security
974 * field. The security field is initialized to NULL when the structure is
976 * @sma contains the semaphore structure
977 * Return 0 if operation was successful and permission is granted.
978 * @sem_free_security:
979 * deallocate security struct for this semaphore
980 * @sma contains the semaphore structure.
982 * Check permission when a semaphore is requested through the semget
983 * system call. This hook is only called when returning the semaphore
984 * identifier for an existing semaphore, not when a new one must be
986 * @sma contains the semaphore structure.
987 * @semflg contains the operation control flags.
988 * Return 0 if permission is granted.
990 * Check permission when a semaphore operation specified by @cmd is to be
991 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
992 * IPC_INFO or SEM_INFO.
993 * @sma contains the semaphore structure. May be NULL.
994 * @cmd contains the operation to be performed.
995 * Return 0 if permission is granted.
997 * Check permissions before performing operations on members of the
998 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1000 * @sma contains the semaphore structure.
1001 * @sops contains the operations to perform.
1002 * @nsops contains the number of operations to perform.
1003 * @alter contains the flag indicating whether changes are to be made.
1004 * Return 0 if permission is granted.
1007 * Check permission before allowing the @parent process to trace the
1009 * Security modules may also want to perform a process tracing check
1010 * during an execve in the set_security or apply_creds hooks of
1011 * binprm_security_ops if the process is being traced and its security
1012 * attributes would be changed by the execve.
1013 * @parent contains the task_struct structure for parent process.
1014 * @child contains the task_struct structure for child process.
1015 * Return 0 if permission is granted.
1017 * Get the @effective, @inheritable, and @permitted capability sets for
1018 * the @target process. The hook may also perform permission checking to
1019 * determine if the current process is allowed to see the capability sets
1020 * of the @target process.
1021 * @target contains the task_struct structure for target process.
1022 * @effective contains the effective capability set.
1023 * @inheritable contains the inheritable capability set.
1024 * @permitted contains the permitted capability set.
1025 * Return 0 if the capability sets were successfully obtained.
1027 * Check permission before setting the @effective, @inheritable, and
1028 * @permitted capability sets for the @target process.
1029 * Caveat: @target is also set to current if a set of processes is
1030 * specified (i.e. all processes other than current and init or a
1031 * particular process group). Hence, the capset_set hook may need to
1032 * revalidate permission to the actual target process.
1033 * @target contains the task_struct structure for target process.
1034 * @effective contains the effective capability set.
1035 * @inheritable contains the inheritable capability set.
1036 * @permitted contains the permitted capability set.
1037 * Return 0 if permission is granted.
1039 * Set the @effective, @inheritable, and @permitted capability sets for
1040 * the @target process. Since capset_check cannot always check permission
1041 * to the real @target process, this hook may also perform permission
1042 * checking to determine if the current process is allowed to set the
1043 * capability sets of the @target process. However, this hook has no way
1044 * of returning an error due to the structure of the sys_capset code.
1045 * @target contains the task_struct structure for target process.
1046 * @effective contains the effective capability set.
1047 * @inheritable contains the inheritable capability set.
1048 * @permitted contains the permitted capability set.
1050 * Check whether the @tsk process has the @cap capability.
1051 * @tsk contains the task_struct for the process.
1052 * @cap contains the capability <include/linux/capability.h>.
1053 * Return 0 if the capability is granted for @tsk.
1055 * Check permission before enabling or disabling process accounting. If
1056 * accounting is being enabled, then @file refers to the open file used to
1057 * store accounting records. If accounting is being disabled, then @file
1059 * @file contains the file structure for the accounting file (may be NULL).
1060 * Return 0 if permission is granted.
1062 * Check permission before accessing the @table sysctl variable in the
1063 * manner specified by @op.
1064 * @table contains the ctl_table structure for the sysctl variable.
1065 * @op contains the operation (001 = search, 002 = write, 004 = read).
1066 * Return 0 if permission is granted.
1068 * Check permission before accessing the kernel message ring or changing
1069 * logging to the console.
1070 * See the syslog(2) manual page for an explanation of the @type values.
1071 * @type contains the type of action.
1072 * Return 0 if permission is granted.
1074 * Check permission to change the system time.
1075 * struct timespec and timezone are defined in include/linux/time.h
1076 * @ts contains new time
1077 * @tz contains new timezone
1078 * Return 0 if permission is granted.
1079 * @vm_enough_memory:
1080 * Check permissions for allocating a new virtual mapping.
1081 * @pages contains the number of pages.
1082 * Return 0 if permission is granted.
1084 * @register_security:
1085 * allow module stacking.
1086 * @name contains the name of the security module being stacked.
1087 * @ops contains a pointer to the struct security_operations of the module to stack.
1088 * @unregister_security:
1089 * remove a stacked module.
1090 * @name contains the name of the security module being unstacked.
1091 * @ops contains a pointer to the struct security_operations of the module to unstack.
1093 * This is the main security structure.
1095 struct security_operations {
1096 int (*ptrace) (struct task_struct * parent, struct task_struct * child);
1097 int (*capget) (struct task_struct * target,
1098 kernel_cap_t * effective,
1099 kernel_cap_t * inheritable, kernel_cap_t * permitted);
1100 int (*capset_check) (struct task_struct * target,
1101 kernel_cap_t * effective,
1102 kernel_cap_t * inheritable,
1103 kernel_cap_t * permitted);
1104 void (*capset_set) (struct task_struct * target,
1105 kernel_cap_t * effective,
1106 kernel_cap_t * inheritable,
1107 kernel_cap_t * permitted);
1108 int (*capable) (struct task_struct * tsk, int cap);
1109 int (*acct) (struct file * file);
1110 int (*sysctl) (struct ctl_table * table, int op);
1111 int (*quotactl) (int cmds, int type, int id, struct super_block * sb);
1112 int (*quota_on) (struct dentry * dentry);
1113 int (*syslog) (int type);
1114 int (*settime) (struct timespec *ts, struct timezone *tz);
1115 int (*vm_enough_memory) (long pages);
1117 int (*bprm_alloc_security) (struct linux_binprm * bprm);
1118 void (*bprm_free_security) (struct linux_binprm * bprm);
1119 void (*bprm_apply_creds) (struct linux_binprm * bprm, int unsafe);
1120 void (*bprm_post_apply_creds) (struct linux_binprm * bprm);
1121 int (*bprm_set_security) (struct linux_binprm * bprm);
1122 int (*bprm_check_security) (struct linux_binprm * bprm);
1123 int (*bprm_secureexec) (struct linux_binprm * bprm);
1125 int (*sb_alloc_security) (struct super_block * sb);
1126 void (*sb_free_security) (struct super_block * sb);
1127 int (*sb_copy_data)(struct file_system_type *type,
1128 void *orig, void *copy);
1129 int (*sb_kern_mount) (struct super_block *sb, void *data);
1130 int (*sb_statfs) (struct super_block * sb);
1131 int (*sb_mount) (char *dev_name, struct nameidata * nd,
1132 char *type, unsigned long flags, void *data);
1133 int (*sb_check_sb) (struct vfsmount * mnt, struct nameidata * nd);
1134 int (*sb_umount) (struct vfsmount * mnt, int flags);
1135 void (*sb_umount_close) (struct vfsmount * mnt);
1136 void (*sb_umount_busy) (struct vfsmount * mnt);
1137 void (*sb_post_remount) (struct vfsmount * mnt,
1138 unsigned long flags, void *data);
1139 void (*sb_post_mountroot) (void);
1140 void (*sb_post_addmount) (struct vfsmount * mnt,
1141 struct nameidata * mountpoint_nd);
1142 int (*sb_pivotroot) (struct nameidata * old_nd,
1143 struct nameidata * new_nd);
1144 void (*sb_post_pivotroot) (struct nameidata * old_nd,
1145 struct nameidata * new_nd);
1147 int (*inode_alloc_security) (struct inode *inode);
1148 void (*inode_free_security) (struct inode *inode);
1149 int (*inode_init_security) (struct inode *inode, struct inode *dir,
1150 char **name, void **value, size_t *len);
1151 int (*inode_create) (struct inode *dir,
1152 struct dentry *dentry, int mode);
1153 int (*inode_link) (struct dentry *old_dentry,
1154 struct inode *dir, struct dentry *new_dentry);
1155 int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
1156 int (*inode_symlink) (struct inode *dir,
1157 struct dentry *dentry, const char *old_name);
1158 int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, int mode);
1159 int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
1160 int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
1161 int mode, dev_t dev);
1162 int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
1163 struct inode *new_dir, struct dentry *new_dentry);
1164 int (*inode_readlink) (struct dentry *dentry);
1165 int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
1166 int (*inode_permission) (struct inode *inode, int mask, struct nameidata *nd);
1167 int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
1168 int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
1169 void (*inode_delete) (struct inode *inode);
1170 int (*inode_setxattr) (struct dentry *dentry, char *name, void *value,
1171 size_t size, int flags);
1172 void (*inode_post_setxattr) (struct dentry *dentry, char *name, void *value,
1173 size_t size, int flags);
1174 int (*inode_getxattr) (struct dentry *dentry, char *name);
1175 int (*inode_listxattr) (struct dentry *dentry);
1176 int (*inode_removexattr) (struct dentry *dentry, char *name);
1177 const char *(*inode_xattr_getsuffix) (void);
1178 int (*inode_getsecurity)(const struct inode *inode, const char *name, void *buffer, size_t size, int err);
1179 int (*inode_setsecurity)(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1180 int (*inode_listsecurity)(struct inode *inode, char *buffer, size_t buffer_size);
1182 int (*file_permission) (struct file * file, int mask);
1183 int (*file_alloc_security) (struct file * file);
1184 void (*file_free_security) (struct file * file);
1185 int (*file_ioctl) (struct file * file, unsigned int cmd,
1187 int (*file_mmap) (struct file * file,
1188 unsigned long reqprot,
1189 unsigned long prot, unsigned long flags);
1190 int (*file_mprotect) (struct vm_area_struct * vma,
1191 unsigned long reqprot,
1192 unsigned long prot);
1193 int (*file_lock) (struct file * file, unsigned int cmd);
1194 int (*file_fcntl) (struct file * file, unsigned int cmd,
1196 int (*file_set_fowner) (struct file * file);
1197 int (*file_send_sigiotask) (struct task_struct * tsk,
1198 struct fown_struct * fown, int sig);
1199 int (*file_receive) (struct file * file);
1201 int (*task_create) (unsigned long clone_flags);
1202 int (*task_alloc_security) (struct task_struct * p);
1203 void (*task_free_security) (struct task_struct * p);
1204 int (*task_setuid) (uid_t id0, uid_t id1, uid_t id2, int flags);
1205 int (*task_post_setuid) (uid_t old_ruid /* or fsuid */ ,
1206 uid_t old_euid, uid_t old_suid, int flags);
1207 int (*task_setgid) (gid_t id0, gid_t id1, gid_t id2, int flags);
1208 int (*task_setpgid) (struct task_struct * p, pid_t pgid);
1209 int (*task_getpgid) (struct task_struct * p);
1210 int (*task_getsid) (struct task_struct * p);
1211 int (*task_setgroups) (struct group_info *group_info);
1212 int (*task_setnice) (struct task_struct * p, int nice);
1213 int (*task_setrlimit) (unsigned int resource, struct rlimit * new_rlim);
1214 int (*task_setscheduler) (struct task_struct * p, int policy,
1215 struct sched_param * lp);
1216 int (*task_getscheduler) (struct task_struct * p);
1217 int (*task_kill) (struct task_struct * p,
1218 struct siginfo * info, int sig);
1219 int (*task_wait) (struct task_struct * p);
1220 int (*task_prctl) (int option, unsigned long arg2,
1221 unsigned long arg3, unsigned long arg4,
1222 unsigned long arg5);
1223 void (*task_reparent_to_init) (struct task_struct * p);
1224 void (*task_to_inode)(struct task_struct *p, struct inode *inode);
1226 int (*ipc_permission) (struct kern_ipc_perm * ipcp, short flag);
1228 int (*msg_msg_alloc_security) (struct msg_msg * msg);
1229 void (*msg_msg_free_security) (struct msg_msg * msg);
1231 int (*msg_queue_alloc_security) (struct msg_queue * msq);
1232 void (*msg_queue_free_security) (struct msg_queue * msq);
1233 int (*msg_queue_associate) (struct msg_queue * msq, int msqflg);
1234 int (*msg_queue_msgctl) (struct msg_queue * msq, int cmd);
1235 int (*msg_queue_msgsnd) (struct msg_queue * msq,
1236 struct msg_msg * msg, int msqflg);
1237 int (*msg_queue_msgrcv) (struct msg_queue * msq,
1238 struct msg_msg * msg,
1239 struct task_struct * target,
1240 long type, int mode);
1242 int (*shm_alloc_security) (struct shmid_kernel * shp);
1243 void (*shm_free_security) (struct shmid_kernel * shp);
1244 int (*shm_associate) (struct shmid_kernel * shp, int shmflg);
1245 int (*shm_shmctl) (struct shmid_kernel * shp, int cmd);
1246 int (*shm_shmat) (struct shmid_kernel * shp,
1247 char __user *shmaddr, int shmflg);
1249 int (*sem_alloc_security) (struct sem_array * sma);
1250 void (*sem_free_security) (struct sem_array * sma);
1251 int (*sem_associate) (struct sem_array * sma, int semflg);
1252 int (*sem_semctl) (struct sem_array * sma, int cmd);
1253 int (*sem_semop) (struct sem_array * sma,
1254 struct sembuf * sops, unsigned nsops, int alter);
1256 int (*netlink_send) (struct sock * sk, struct sk_buff * skb);
1257 int (*netlink_recv) (struct sk_buff * skb);
1259 /* allow module stacking */
1260 int (*register_security) (const char *name,
1261 struct security_operations *ops);
1262 int (*unregister_security) (const char *name,
1263 struct security_operations *ops);
1265 void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1267 int (*getprocattr)(struct task_struct *p, char *name, void *value, size_t size);
1268 int (*setprocattr)(struct task_struct *p, char *name, void *value, size_t size);
1270 #ifdef CONFIG_SECURITY_NETWORK
1271 int (*unix_stream_connect) (struct socket * sock,
1272 struct socket * other, struct sock * newsk);
1273 int (*unix_may_send) (struct socket * sock, struct socket * other);
1275 int (*socket_create) (int family, int type, int protocol, int kern);
1276 void (*socket_post_create) (struct socket * sock, int family,
1277 int type, int protocol, int kern);
1278 int (*socket_bind) (struct socket * sock,
1279 struct sockaddr * address, int addrlen);
1280 int (*socket_connect) (struct socket * sock,
1281 struct sockaddr * address, int addrlen);
1282 int (*socket_listen) (struct socket * sock, int backlog);
1283 int (*socket_accept) (struct socket * sock, struct socket * newsock);
1284 void (*socket_post_accept) (struct socket * sock,
1285 struct socket * newsock);
1286 int (*socket_sendmsg) (struct socket * sock,
1287 struct msghdr * msg, int size);
1288 int (*socket_recvmsg) (struct socket * sock,
1289 struct msghdr * msg, int size, int flags);
1290 int (*socket_getsockname) (struct socket * sock);
1291 int (*socket_getpeername) (struct socket * sock);
1292 int (*socket_getsockopt) (struct socket * sock, int level, int optname);
1293 int (*socket_setsockopt) (struct socket * sock, int level, int optname);
1294 int (*socket_shutdown) (struct socket * sock, int how);
1295 int (*socket_sock_rcv_skb) (struct sock * sk, struct sk_buff * skb);
1296 int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
1297 int (*socket_getpeersec_dgram) (struct sk_buff *skb, char **secdata, u32 *seclen);
1298 int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
1299 void (*sk_free_security) (struct sock *sk);
1300 unsigned int (*sk_getsid) (struct sock *sk, struct flowi *fl, u8 dir);
1301 #endif /* CONFIG_SECURITY_NETWORK */
1303 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1304 int (*xfrm_policy_alloc_security) (struct xfrm_policy *xp, struct xfrm_user_sec_ctx *sec_ctx);
1305 int (*xfrm_policy_clone_security) (struct xfrm_policy *old, struct xfrm_policy *new);
1306 void (*xfrm_policy_free_security) (struct xfrm_policy *xp);
1307 int (*xfrm_policy_delete_security) (struct xfrm_policy *xp);
1308 int (*xfrm_state_alloc_security) (struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
1309 void (*xfrm_state_free_security) (struct xfrm_state *x);
1310 int (*xfrm_state_delete_security) (struct xfrm_state *x);
1311 int (*xfrm_policy_lookup)(struct xfrm_policy *xp, u32 sk_sid, u8 dir);
1312 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1314 /* key management security hooks */
1316 int (*key_alloc)(struct key *key);
1317 void (*key_free)(struct key *key);
1318 int (*key_permission)(key_ref_t key_ref,
1319 struct task_struct *context,
1322 #endif /* CONFIG_KEYS */
1326 /* global variables */
1327 extern struct security_operations *security_ops;
1330 static inline int security_ptrace (struct task_struct * parent, struct task_struct * child)
1332 return security_ops->ptrace (parent, child);
1335 static inline int security_capget (struct task_struct *target,
1336 kernel_cap_t *effective,
1337 kernel_cap_t *inheritable,
1338 kernel_cap_t *permitted)
1340 return security_ops->capget (target, effective, inheritable, permitted);
1343 static inline int security_capset_check (struct task_struct *target,
1344 kernel_cap_t *effective,
1345 kernel_cap_t *inheritable,
1346 kernel_cap_t *permitted)
1348 return security_ops->capset_check (target, effective, inheritable, permitted);
1351 static inline void security_capset_set (struct task_struct *target,
1352 kernel_cap_t *effective,
1353 kernel_cap_t *inheritable,
1354 kernel_cap_t *permitted)
1356 security_ops->capset_set (target, effective, inheritable, permitted);
1359 static inline int security_capable(struct task_struct *tsk, int cap)
1361 return security_ops->capable(tsk, cap);
1364 static inline int security_acct (struct file *file)
1366 return security_ops->acct (file);
1369 static inline int security_sysctl(struct ctl_table *table, int op)
1371 return security_ops->sysctl(table, op);
1374 static inline int security_quotactl (int cmds, int type, int id,
1375 struct super_block *sb)
1377 return security_ops->quotactl (cmds, type, id, sb);
1380 static inline int security_quota_on (struct dentry * dentry)
1382 return security_ops->quota_on (dentry);
1385 static inline int security_syslog(int type)
1387 return security_ops->syslog(type);
1390 static inline int security_settime(struct timespec *ts, struct timezone *tz)
1392 return security_ops->settime(ts, tz);
1396 static inline int security_vm_enough_memory(long pages)
1398 return security_ops->vm_enough_memory(pages);
1401 static inline int security_bprm_alloc (struct linux_binprm *bprm)
1403 return security_ops->bprm_alloc_security (bprm);
1405 static inline void security_bprm_free (struct linux_binprm *bprm)
1407 security_ops->bprm_free_security (bprm);
1409 static inline void security_bprm_apply_creds (struct linux_binprm *bprm, int unsafe)
1411 security_ops->bprm_apply_creds (bprm, unsafe);
1413 static inline void security_bprm_post_apply_creds (struct linux_binprm *bprm)
1415 security_ops->bprm_post_apply_creds (bprm);
1417 static inline int security_bprm_set (struct linux_binprm *bprm)
1419 return security_ops->bprm_set_security (bprm);
1422 static inline int security_bprm_check (struct linux_binprm *bprm)
1424 return security_ops->bprm_check_security (bprm);
1427 static inline int security_bprm_secureexec (struct linux_binprm *bprm)
1429 return security_ops->bprm_secureexec (bprm);
1432 static inline int security_sb_alloc (struct super_block *sb)
1434 return security_ops->sb_alloc_security (sb);
1437 static inline void security_sb_free (struct super_block *sb)
1439 security_ops->sb_free_security (sb);
1442 static inline int security_sb_copy_data (struct file_system_type *type,
1443 void *orig, void *copy)
1445 return security_ops->sb_copy_data (type, orig, copy);
1448 static inline int security_sb_kern_mount (struct super_block *sb, void *data)
1450 return security_ops->sb_kern_mount (sb, data);
1453 static inline int security_sb_statfs (struct super_block *sb)
1455 return security_ops->sb_statfs (sb);
1458 static inline int security_sb_mount (char *dev_name, struct nameidata *nd,
1459 char *type, unsigned long flags,
1462 return security_ops->sb_mount (dev_name, nd, type, flags, data);
1465 static inline int security_sb_check_sb (struct vfsmount *mnt,
1466 struct nameidata *nd)
1468 return security_ops->sb_check_sb (mnt, nd);
1471 static inline int security_sb_umount (struct vfsmount *mnt, int flags)
1473 return security_ops->sb_umount (mnt, flags);
1476 static inline void security_sb_umount_close (struct vfsmount *mnt)
1478 security_ops->sb_umount_close (mnt);
1481 static inline void security_sb_umount_busy (struct vfsmount *mnt)
1483 security_ops->sb_umount_busy (mnt);
1486 static inline void security_sb_post_remount (struct vfsmount *mnt,
1487 unsigned long flags, void *data)
1489 security_ops->sb_post_remount (mnt, flags, data);
1492 static inline void security_sb_post_mountroot (void)
1494 security_ops->sb_post_mountroot ();
1497 static inline void security_sb_post_addmount (struct vfsmount *mnt,
1498 struct nameidata *mountpoint_nd)
1500 security_ops->sb_post_addmount (mnt, mountpoint_nd);
1503 static inline int security_sb_pivotroot (struct nameidata *old_nd,
1504 struct nameidata *new_nd)
1506 return security_ops->sb_pivotroot (old_nd, new_nd);
1509 static inline void security_sb_post_pivotroot (struct nameidata *old_nd,
1510 struct nameidata *new_nd)
1512 security_ops->sb_post_pivotroot (old_nd, new_nd);
1515 static inline int security_inode_alloc (struct inode *inode)
1517 return security_ops->inode_alloc_security (inode);
1520 static inline void security_inode_free (struct inode *inode)
1522 security_ops->inode_free_security (inode);
1525 static inline int security_inode_init_security (struct inode *inode,
1531 if (unlikely (IS_PRIVATE (inode)))
1533 return security_ops->inode_init_security (inode, dir, name, value, len);
1536 static inline int security_inode_create (struct inode *dir,
1537 struct dentry *dentry,
1540 if (unlikely (IS_PRIVATE (dir)))
1542 return security_ops->inode_create (dir, dentry, mode);
1545 static inline int security_inode_link (struct dentry *old_dentry,
1547 struct dentry *new_dentry)
1549 if (unlikely (IS_PRIVATE (old_dentry->d_inode)))
1551 return security_ops->inode_link (old_dentry, dir, new_dentry);
1554 static inline int security_inode_unlink (struct inode *dir,
1555 struct dentry *dentry)
1557 if (unlikely (IS_PRIVATE (dentry->d_inode)))
1559 return security_ops->inode_unlink (dir, dentry);
1562 static inline int security_inode_symlink (struct inode *dir,
1563 struct dentry *dentry,
1564 const char *old_name)
1566 if (unlikely (IS_PRIVATE (dir)))
1568 return security_ops->inode_symlink (dir, dentry, old_name);
1571 static inline int security_inode_mkdir (struct inode *dir,
1572 struct dentry *dentry,
1575 if (unlikely (IS_PRIVATE (dir)))
1577 return security_ops->inode_mkdir (dir, dentry, mode);
1580 static inline int security_inode_rmdir (struct inode *dir,
1581 struct dentry *dentry)
1583 if (unlikely (IS_PRIVATE (dentry->d_inode)))
1585 return security_ops->inode_rmdir (dir, dentry);
1588 static inline int security_inode_mknod (struct inode *dir,
1589 struct dentry *dentry,
1590 int mode, dev_t dev)
1592 if (unlikely (IS_PRIVATE (dir)))
1594 return security_ops->inode_mknod (dir, dentry, mode, dev);
1597 static inline int security_inode_rename (struct inode *old_dir,
1598 struct dentry *old_dentry,
1599 struct inode *new_dir,
1600 struct dentry *new_dentry)
1602 if (unlikely (IS_PRIVATE (old_dentry->d_inode) ||
1603 (new_dentry->d_inode && IS_PRIVATE (new_dentry->d_inode))))
1605 return security_ops->inode_rename (old_dir, old_dentry,
1606 new_dir, new_dentry);
1609 static inline int security_inode_readlink (struct dentry *dentry)
1611 if (unlikely (IS_PRIVATE (dentry->d_inode)))
1613 return security_ops->inode_readlink (dentry);
1616 static inline int security_inode_follow_link (struct dentry *dentry,
1617 struct nameidata *nd)
1619 if (unlikely (IS_PRIVATE (dentry->d_inode)))
1621 return security_ops->inode_follow_link (dentry, nd);
1624 static inline int security_inode_permission (struct inode *inode, int mask,
1625 struct nameidata *nd)
1627 if (unlikely (IS_PRIVATE (inode)))
1629 return security_ops->inode_permission (inode, mask, nd);
1632 static inline int security_inode_setattr (struct dentry *dentry,
1635 if (unlikely (IS_PRIVATE (dentry->d_inode)))
1637 return security_ops->inode_setattr (dentry, attr);
1640 static inline int security_inode_getattr (struct vfsmount *mnt,
1641 struct dentry *dentry)
1643 if (unlikely (IS_PRIVATE (dentry->d_inode)))
1645 return security_ops->inode_getattr (mnt, dentry);
1648 static inline void security_inode_delete (struct inode *inode)
1650 if (unlikely (IS_PRIVATE (inode)))
1652 security_ops->inode_delete (inode);
1655 static inline int security_inode_setxattr (struct dentry *dentry, char *name,
1656 void *value, size_t size, int flags)
1658 if (unlikely (IS_PRIVATE (dentry->d_inode)))
1660 return security_ops->inode_setxattr (dentry, name, value, size, flags);
1663 static inline void security_inode_post_setxattr (struct dentry *dentry, char *name,
1664 void *value, size_t size, int flags)
1666 if (unlikely (IS_PRIVATE (dentry->d_inode)))
1668 security_ops->inode_post_setxattr (dentry, name, value, size, flags);
1671 static inline int security_inode_getxattr (struct dentry *dentry, char *name)
1673 if (unlikely (IS_PRIVATE (dentry->d_inode)))
1675 return security_ops->inode_getxattr (dentry, name);
1678 static inline int security_inode_listxattr (struct dentry *dentry)
1680 if (unlikely (IS_PRIVATE (dentry->d_inode)))
1682 return security_ops->inode_listxattr (dentry);
1685 static inline int security_inode_removexattr (struct dentry *dentry, char *name)
1687 if (unlikely (IS_PRIVATE (dentry->d_inode)))
1689 return security_ops->inode_removexattr (dentry, name);
1692 static inline const char *security_inode_xattr_getsuffix(void)
1694 return security_ops->inode_xattr_getsuffix();
1697 static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void *buffer, size_t size, int err)
1699 if (unlikely (IS_PRIVATE (inode)))
1701 return security_ops->inode_getsecurity(inode, name, buffer, size, err);
1704 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
1706 if (unlikely (IS_PRIVATE (inode)))
1708 return security_ops->inode_setsecurity(inode, name, value, size, flags);
1711 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
1713 if (unlikely (IS_PRIVATE (inode)))
1715 return security_ops->inode_listsecurity(inode, buffer, buffer_size);
1718 static inline int security_file_permission (struct file *file, int mask)
1720 return security_ops->file_permission (file, mask);
1723 static inline int security_file_alloc (struct file *file)
1725 return security_ops->file_alloc_security (file);
1728 static inline void security_file_free (struct file *file)
1730 security_ops->file_free_security (file);
1733 static inline int security_file_ioctl (struct file *file, unsigned int cmd,
1736 return security_ops->file_ioctl (file, cmd, arg);
1739 static inline int security_file_mmap (struct file *file, unsigned long reqprot,
1741 unsigned long flags)
1743 return security_ops->file_mmap (file, reqprot, prot, flags);
1746 static inline int security_file_mprotect (struct vm_area_struct *vma,
1747 unsigned long reqprot,
1750 return security_ops->file_mprotect (vma, reqprot, prot);
1753 static inline int security_file_lock (struct file *file, unsigned int cmd)
1755 return security_ops->file_lock (file, cmd);
1758 static inline int security_file_fcntl (struct file *file, unsigned int cmd,
1761 return security_ops->file_fcntl (file, cmd, arg);
1764 static inline int security_file_set_fowner (struct file *file)
1766 return security_ops->file_set_fowner (file);
1769 static inline int security_file_send_sigiotask (struct task_struct *tsk,
1770 struct fown_struct *fown,
1773 return security_ops->file_send_sigiotask (tsk, fown, sig);
1776 static inline int security_file_receive (struct file *file)
1778 return security_ops->file_receive (file);
1781 static inline int security_task_create (unsigned long clone_flags)
1783 return security_ops->task_create (clone_flags);
1786 static inline int security_task_alloc (struct task_struct *p)
1788 return security_ops->task_alloc_security (p);
1791 static inline void security_task_free (struct task_struct *p)
1793 security_ops->task_free_security (p);
1796 static inline int security_task_setuid (uid_t id0, uid_t id1, uid_t id2,
1799 return security_ops->task_setuid (id0, id1, id2, flags);
1802 static inline int security_task_post_setuid (uid_t old_ruid, uid_t old_euid,
1803 uid_t old_suid, int flags)
1805 return security_ops->task_post_setuid (old_ruid, old_euid, old_suid, flags);
1808 static inline int security_task_setgid (gid_t id0, gid_t id1, gid_t id2,
1811 return security_ops->task_setgid (id0, id1, id2, flags);
1814 static inline int security_task_setpgid (struct task_struct *p, pid_t pgid)
1816 return security_ops->task_setpgid (p, pgid);
1819 static inline int security_task_getpgid (struct task_struct *p)
1821 return security_ops->task_getpgid (p);
1824 static inline int security_task_getsid (struct task_struct *p)
1826 return security_ops->task_getsid (p);
1829 static inline int security_task_setgroups (struct group_info *group_info)
1831 return security_ops->task_setgroups (group_info);
1834 static inline int security_task_setnice (struct task_struct *p, int nice)
1836 return security_ops->task_setnice (p, nice);
1839 static inline int security_task_setrlimit (unsigned int resource,
1840 struct rlimit *new_rlim)
1842 return security_ops->task_setrlimit (resource, new_rlim);
1845 static inline int security_task_setscheduler (struct task_struct *p,
1847 struct sched_param *lp)
1849 return security_ops->task_setscheduler (p, policy, lp);
1852 static inline int security_task_getscheduler (struct task_struct *p)
1854 return security_ops->task_getscheduler (p);
1857 static inline int security_task_kill (struct task_struct *p,
1858 struct siginfo *info, int sig)
1860 return security_ops->task_kill (p, info, sig);
1863 static inline int security_task_wait (struct task_struct *p)
1865 return security_ops->task_wait (p);
1868 static inline int security_task_prctl (int option, unsigned long arg2,
1873 return security_ops->task_prctl (option, arg2, arg3, arg4, arg5);
1876 static inline void security_task_reparent_to_init (struct task_struct *p)
1878 security_ops->task_reparent_to_init (p);
1881 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
1883 security_ops->task_to_inode(p, inode);
1886 static inline int security_ipc_permission (struct kern_ipc_perm *ipcp,
1889 return security_ops->ipc_permission (ipcp, flag);
1892 static inline int security_msg_msg_alloc (struct msg_msg * msg)
1894 return security_ops->msg_msg_alloc_security (msg);
1897 static inline void security_msg_msg_free (struct msg_msg * msg)
1899 security_ops->msg_msg_free_security(msg);
1902 static inline int security_msg_queue_alloc (struct msg_queue *msq)
1904 return security_ops->msg_queue_alloc_security (msq);
1907 static inline void security_msg_queue_free (struct msg_queue *msq)
1909 security_ops->msg_queue_free_security (msq);
1912 static inline int security_msg_queue_associate (struct msg_queue * msq,
1915 return security_ops->msg_queue_associate (msq, msqflg);
1918 static inline int security_msg_queue_msgctl (struct msg_queue * msq, int cmd)
1920 return security_ops->msg_queue_msgctl (msq, cmd);
1923 static inline int security_msg_queue_msgsnd (struct msg_queue * msq,
1924 struct msg_msg * msg, int msqflg)
1926 return security_ops->msg_queue_msgsnd (msq, msg, msqflg);
1929 static inline int security_msg_queue_msgrcv (struct msg_queue * msq,
1930 struct msg_msg * msg,
1931 struct task_struct * target,
1932 long type, int mode)
1934 return security_ops->msg_queue_msgrcv (msq, msg, target, type, mode);
1937 static inline int security_shm_alloc (struct shmid_kernel *shp)
1939 return security_ops->shm_alloc_security (shp);
1942 static inline void security_shm_free (struct shmid_kernel *shp)
1944 security_ops->shm_free_security (shp);
1947 static inline int security_shm_associate (struct shmid_kernel * shp,
1950 return security_ops->shm_associate(shp, shmflg);
1953 static inline int security_shm_shmctl (struct shmid_kernel * shp, int cmd)
1955 return security_ops->shm_shmctl (shp, cmd);
1958 static inline int security_shm_shmat (struct shmid_kernel * shp,
1959 char __user *shmaddr, int shmflg)
1961 return security_ops->shm_shmat(shp, shmaddr, shmflg);
1964 static inline int security_sem_alloc (struct sem_array *sma)
1966 return security_ops->sem_alloc_security (sma);
1969 static inline void security_sem_free (struct sem_array *sma)
1971 security_ops->sem_free_security (sma);
1974 static inline int security_sem_associate (struct sem_array * sma, int semflg)
1976 return security_ops->sem_associate (sma, semflg);
1979 static inline int security_sem_semctl (struct sem_array * sma, int cmd)
1981 return security_ops->sem_semctl(sma, cmd);
1984 static inline int security_sem_semop (struct sem_array * sma,
1985 struct sembuf * sops, unsigned nsops,
1988 return security_ops->sem_semop(sma, sops, nsops, alter);
1991 static inline void security_d_instantiate (struct dentry *dentry, struct inode *inode)
1993 if (unlikely (inode && IS_PRIVATE (inode)))
1995 security_ops->d_instantiate (dentry, inode);
1998 static inline int security_getprocattr(struct task_struct *p, char *name, void *value, size_t size)
2000 return security_ops->getprocattr(p, name, value, size);
2003 static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2005 return security_ops->setprocattr(p, name, value, size);
2008 static inline int security_netlink_send(struct sock *sk, struct sk_buff * skb)
2010 return security_ops->netlink_send(sk, skb);
2013 static inline int security_netlink_recv(struct sk_buff * skb)
2015 return security_ops->netlink_recv(skb);
2019 extern int security_init (void);
2020 extern int register_security (struct security_operations *ops);
2021 extern int unregister_security (struct security_operations *ops);
2022 extern int mod_reg_security (const char *name, struct security_operations *ops);
2023 extern int mod_unreg_security (const char *name, struct security_operations *ops);
2024 extern struct dentry *securityfs_create_file(const char *name, mode_t mode,
2025 struct dentry *parent, void *data,
2026 struct file_operations *fops);
2027 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
2028 extern void securityfs_remove(struct dentry *dentry);
2031 #else /* CONFIG_SECURITY */
2034 * This is the default capabilities functionality. Most of these functions
2035 * are just stubbed out, but a few must call the proper capable code.
2038 static inline int security_init(void)
2043 static inline int security_ptrace (struct task_struct *parent, struct task_struct * child)
2045 return cap_ptrace (parent, child);
2048 static inline int security_capget (struct task_struct *target,
2049 kernel_cap_t *effective,
2050 kernel_cap_t *inheritable,
2051 kernel_cap_t *permitted)
2053 return cap_capget (target, effective, inheritable, permitted);
2056 static inline int security_capset_check (struct task_struct *target,
2057 kernel_cap_t *effective,
2058 kernel_cap_t *inheritable,
2059 kernel_cap_t *permitted)
2061 return cap_capset_check (target, effective, inheritable, permitted);
2064 static inline void security_capset_set (struct task_struct *target,
2065 kernel_cap_t *effective,
2066 kernel_cap_t *inheritable,
2067 kernel_cap_t *permitted)
2069 cap_capset_set (target, effective, inheritable, permitted);
2072 static inline int security_capable(struct task_struct *tsk, int cap)
2074 return cap_capable(tsk, cap);
2077 static inline int security_acct (struct file *file)
2082 static inline int security_sysctl(struct ctl_table *table, int op)
2087 static inline int security_quotactl (int cmds, int type, int id,
2088 struct super_block * sb)
2093 static inline int security_quota_on (struct dentry * dentry)
2098 static inline int security_syslog(int type)
2100 return cap_syslog(type);
2103 static inline int security_settime(struct timespec *ts, struct timezone *tz)
2105 return cap_settime(ts, tz);
2108 static inline int security_vm_enough_memory(long pages)
2110 return cap_vm_enough_memory(pages);
2113 static inline int security_bprm_alloc (struct linux_binprm *bprm)
2118 static inline void security_bprm_free (struct linux_binprm *bprm)
2121 static inline void security_bprm_apply_creds (struct linux_binprm *bprm, int unsafe)
2123 cap_bprm_apply_creds (bprm, unsafe);
2126 static inline void security_bprm_post_apply_creds (struct linux_binprm *bprm)
2131 static inline int security_bprm_set (struct linux_binprm *bprm)
2133 return cap_bprm_set_security (bprm);
2136 static inline int security_bprm_check (struct linux_binprm *bprm)
2141 static inline int security_bprm_secureexec (struct linux_binprm *bprm)
2143 return cap_bprm_secureexec(bprm);
2146 static inline int security_sb_alloc (struct super_block *sb)
2151 static inline void security_sb_free (struct super_block *sb)
2154 static inline int security_sb_copy_data (struct file_system_type *type,
2155 void *orig, void *copy)
2160 static inline int security_sb_kern_mount (struct super_block *sb, void *data)
2165 static inline int security_sb_statfs (struct super_block *sb)
2170 static inline int security_sb_mount (char *dev_name, struct nameidata *nd,
2171 char *type, unsigned long flags,
2177 static inline int security_sb_check_sb (struct vfsmount *mnt,
2178 struct nameidata *nd)
2183 static inline int security_sb_umount (struct vfsmount *mnt, int flags)
2188 static inline void security_sb_umount_close (struct vfsmount *mnt)
2191 static inline void security_sb_umount_busy (struct vfsmount *mnt)
2194 static inline void security_sb_post_remount (struct vfsmount *mnt,
2195 unsigned long flags, void *data)
2198 static inline void security_sb_post_mountroot (void)
2201 static inline void security_sb_post_addmount (struct vfsmount *mnt,
2202 struct nameidata *mountpoint_nd)
2205 static inline int security_sb_pivotroot (struct nameidata *old_nd,
2206 struct nameidata *new_nd)
2211 static inline void security_sb_post_pivotroot (struct nameidata *old_nd,
2212 struct nameidata *new_nd)
2215 static inline int security_inode_alloc (struct inode *inode)
2220 static inline void security_inode_free (struct inode *inode)
2223 static inline int security_inode_init_security (struct inode *inode,
2232 static inline int security_inode_create (struct inode *dir,
2233 struct dentry *dentry,
2239 static inline int security_inode_link (struct dentry *old_dentry,
2241 struct dentry *new_dentry)
2246 static inline int security_inode_unlink (struct inode *dir,
2247 struct dentry *dentry)
2252 static inline int security_inode_symlink (struct inode *dir,
2253 struct dentry *dentry,
2254 const char *old_name)
2259 static inline int security_inode_mkdir (struct inode *dir,
2260 struct dentry *dentry,
2266 static inline int security_inode_rmdir (struct inode *dir,
2267 struct dentry *dentry)
2272 static inline int security_inode_mknod (struct inode *dir,
2273 struct dentry *dentry,
2274 int mode, dev_t dev)
2279 static inline int security_inode_rename (struct inode *old_dir,
2280 struct dentry *old_dentry,
2281 struct inode *new_dir,
2282 struct dentry *new_dentry)
2287 static inline int security_inode_readlink (struct dentry *dentry)
2292 static inline int security_inode_follow_link (struct dentry *dentry,
2293 struct nameidata *nd)
2298 static inline int security_inode_permission (struct inode *inode, int mask,
2299 struct nameidata *nd)
2304 static inline int security_inode_setattr (struct dentry *dentry,
2310 static inline int security_inode_getattr (struct vfsmount *mnt,
2311 struct dentry *dentry)
2316 static inline void security_inode_delete (struct inode *inode)
2319 static inline int security_inode_setxattr (struct dentry *dentry, char *name,
2320 void *value, size_t size, int flags)
2322 return cap_inode_setxattr(dentry, name, value, size, flags);
2325 static inline void security_inode_post_setxattr (struct dentry *dentry, char *name,
2326 void *value, size_t size, int flags)
2329 static inline int security_inode_getxattr (struct dentry *dentry, char *name)
2334 static inline int security_inode_listxattr (struct dentry *dentry)
2339 static inline int security_inode_removexattr (struct dentry *dentry, char *name)
2341 return cap_inode_removexattr(dentry, name);
2344 static inline const char *security_inode_xattr_getsuffix (void)
2349 static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void *buffer, size_t size, int err)
2354 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
2359 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
2364 static inline int security_file_permission (struct file *file, int mask)
2369 static inline int security_file_alloc (struct file *file)
2374 static inline void security_file_free (struct file *file)
2377 static inline int security_file_ioctl (struct file *file, unsigned int cmd,
2383 static inline int security_file_mmap (struct file *file, unsigned long reqprot,
2385 unsigned long flags)
2390 static inline int security_file_mprotect (struct vm_area_struct *vma,
2391 unsigned long reqprot,
2397 static inline int security_file_lock (struct file *file, unsigned int cmd)
2402 static inline int security_file_fcntl (struct file *file, unsigned int cmd,
2408 static inline int security_file_set_fowner (struct file *file)
2413 static inline int security_file_send_sigiotask (struct task_struct *tsk,
2414 struct fown_struct *fown,
2420 static inline int security_file_receive (struct file *file)
2425 static inline int security_task_create (unsigned long clone_flags)
2430 static inline int security_task_alloc (struct task_struct *p)
2435 static inline void security_task_free (struct task_struct *p)
2438 static inline int security_task_setuid (uid_t id0, uid_t id1, uid_t id2,
2444 static inline int security_task_post_setuid (uid_t old_ruid, uid_t old_euid,
2445 uid_t old_suid, int flags)
2447 return cap_task_post_setuid (old_ruid, old_euid, old_suid, flags);
2450 static inline int security_task_setgid (gid_t id0, gid_t id1, gid_t id2,
2456 static inline int security_task_setpgid (struct task_struct *p, pid_t pgid)
2461 static inline int security_task_getpgid (struct task_struct *p)
2466 static inline int security_task_getsid (struct task_struct *p)
2471 static inline int security_task_setgroups (struct group_info *group_info)
2476 static inline int security_task_setnice (struct task_struct *p, int nice)
2481 static inline int security_task_setrlimit (unsigned int resource,
2482 struct rlimit *new_rlim)
2487 static inline int security_task_setscheduler (struct task_struct *p,
2489 struct sched_param *lp)
2494 static inline int security_task_getscheduler (struct task_struct *p)
2499 static inline int security_task_kill (struct task_struct *p,
2500 struct siginfo *info, int sig)
2505 static inline int security_task_wait (struct task_struct *p)
2510 static inline int security_task_prctl (int option, unsigned long arg2,
2518 static inline void security_task_reparent_to_init (struct task_struct *p)
2520 cap_task_reparent_to_init (p);
2523 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
2526 static inline int security_ipc_permission (struct kern_ipc_perm *ipcp,
2532 static inline int security_msg_msg_alloc (struct msg_msg * msg)
2537 static inline void security_msg_msg_free (struct msg_msg * msg)
2540 static inline int security_msg_queue_alloc (struct msg_queue *msq)
2545 static inline void security_msg_queue_free (struct msg_queue *msq)
2548 static inline int security_msg_queue_associate (struct msg_queue * msq,
2554 static inline int security_msg_queue_msgctl (struct msg_queue * msq, int cmd)
2559 static inline int security_msg_queue_msgsnd (struct msg_queue * msq,
2560 struct msg_msg * msg, int msqflg)
2565 static inline int security_msg_queue_msgrcv (struct msg_queue * msq,
2566 struct msg_msg * msg,
2567 struct task_struct * target,
2568 long type, int mode)
2573 static inline int security_shm_alloc (struct shmid_kernel *shp)
2578 static inline void security_shm_free (struct shmid_kernel *shp)
2581 static inline int security_shm_associate (struct shmid_kernel * shp,
2587 static inline int security_shm_shmctl (struct shmid_kernel * shp, int cmd)
2592 static inline int security_shm_shmat (struct shmid_kernel * shp,
2593 char __user *shmaddr, int shmflg)
2598 static inline int security_sem_alloc (struct sem_array *sma)
2603 static inline void security_sem_free (struct sem_array *sma)
2606 static inline int security_sem_associate (struct sem_array * sma, int semflg)
2611 static inline int security_sem_semctl (struct sem_array * sma, int cmd)
2616 static inline int security_sem_semop (struct sem_array * sma,
2617 struct sembuf * sops, unsigned nsops,
2623 static inline void security_d_instantiate (struct dentry *dentry, struct inode *inode)
2626 static inline int security_getprocattr(struct task_struct *p, char *name, void *value, size_t size)
2631 static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2636 static inline int security_netlink_send (struct sock *sk, struct sk_buff *skb)
2638 return cap_netlink_send (sk, skb);
2641 static inline int security_netlink_recv (struct sk_buff *skb)
2643 return cap_netlink_recv (skb);
2646 static inline struct dentry *securityfs_create_dir(const char *name,
2647 struct dentry *parent)
2649 return ERR_PTR(-ENODEV);
2652 static inline struct dentry *securityfs_create_file(const char *name,
2654 struct dentry *parent,
2656 struct file_operations *fops)
2658 return ERR_PTR(-ENODEV);
2661 static inline void securityfs_remove(struct dentry *dentry)
2665 #endif /* CONFIG_SECURITY */
2667 #ifdef CONFIG_SECURITY_NETWORK
2668 static inline int security_unix_stream_connect(struct socket * sock,
2669 struct socket * other,
2670 struct sock * newsk)
2672 return security_ops->unix_stream_connect(sock, other, newsk);
2676 static inline int security_unix_may_send(struct socket * sock,
2677 struct socket * other)
2679 return security_ops->unix_may_send(sock, other);
2682 static inline int security_socket_create (int family, int type,
2683 int protocol, int kern)
2685 return security_ops->socket_create(family, type, protocol, kern);
2688 static inline void security_socket_post_create(struct socket * sock,
2691 int protocol, int kern)
2693 security_ops->socket_post_create(sock, family, type,
2697 static inline int security_socket_bind(struct socket * sock,
2698 struct sockaddr * address,
2701 return security_ops->socket_bind(sock, address, addrlen);
2704 static inline int security_socket_connect(struct socket * sock,
2705 struct sockaddr * address,
2708 return security_ops->socket_connect(sock, address, addrlen);
2711 static inline int security_socket_listen(struct socket * sock, int backlog)
2713 return security_ops->socket_listen(sock, backlog);
2716 static inline int security_socket_accept(struct socket * sock,
2717 struct socket * newsock)
2719 return security_ops->socket_accept(sock, newsock);
2722 static inline void security_socket_post_accept(struct socket * sock,
2723 struct socket * newsock)
2725 security_ops->socket_post_accept(sock, newsock);
2728 static inline int security_socket_sendmsg(struct socket * sock,
2729 struct msghdr * msg, int size)
2731 return security_ops->socket_sendmsg(sock, msg, size);
2734 static inline int security_socket_recvmsg(struct socket * sock,
2735 struct msghdr * msg, int size,
2738 return security_ops->socket_recvmsg(sock, msg, size, flags);
2741 static inline int security_socket_getsockname(struct socket * sock)
2743 return security_ops->socket_getsockname(sock);
2746 static inline int security_socket_getpeername(struct socket * sock)
2748 return security_ops->socket_getpeername(sock);
2751 static inline int security_socket_getsockopt(struct socket * sock,
2752 int level, int optname)
2754 return security_ops->socket_getsockopt(sock, level, optname);
2757 static inline int security_socket_setsockopt(struct socket * sock,
2758 int level, int optname)
2760 return security_ops->socket_setsockopt(sock, level, optname);
2763 static inline int security_socket_shutdown(struct socket * sock, int how)
2765 return security_ops->socket_shutdown(sock, how);
2768 static inline int security_sock_rcv_skb (struct sock * sk,
2769 struct sk_buff * skb)
2771 return security_ops->socket_sock_rcv_skb (sk, skb);
2774 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2775 int __user *optlen, unsigned len)
2777 return security_ops->socket_getpeersec_stream(sock, optval, optlen, len);
2780 static inline int security_socket_getpeersec_dgram(struct sk_buff *skb, char **secdata,
2783 return security_ops->socket_getpeersec_dgram(skb, secdata, seclen);
2786 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2788 return security_ops->sk_alloc_security(sk, family, priority);
2791 static inline void security_sk_free(struct sock *sk)
2793 return security_ops->sk_free_security(sk);
2796 static inline unsigned int security_sk_sid(struct sock *sk, struct flowi *fl, u8 dir)
2798 return security_ops->sk_getsid(sk, fl, dir);
2800 #else /* CONFIG_SECURITY_NETWORK */
2801 static inline int security_unix_stream_connect(struct socket * sock,
2802 struct socket * other,
2803 struct sock * newsk)
2808 static inline int security_unix_may_send(struct socket * sock,
2809 struct socket * other)
2814 static inline int security_socket_create (int family, int type,
2815 int protocol, int kern)
2820 static inline void security_socket_post_create(struct socket * sock,
2823 int protocol, int kern)
2827 static inline int security_socket_bind(struct socket * sock,
2828 struct sockaddr * address,
2834 static inline int security_socket_connect(struct socket * sock,
2835 struct sockaddr * address,
2841 static inline int security_socket_listen(struct socket * sock, int backlog)
2846 static inline int security_socket_accept(struct socket * sock,
2847 struct socket * newsock)
2852 static inline void security_socket_post_accept(struct socket * sock,
2853 struct socket * newsock)
2857 static inline int security_socket_sendmsg(struct socket * sock,
2858 struct msghdr * msg, int size)
2863 static inline int security_socket_recvmsg(struct socket * sock,
2864 struct msghdr * msg, int size,
2870 static inline int security_socket_getsockname(struct socket * sock)
2875 static inline int security_socket_getpeername(struct socket * sock)
2880 static inline int security_socket_getsockopt(struct socket * sock,
2881 int level, int optname)
2886 static inline int security_socket_setsockopt(struct socket * sock,
2887 int level, int optname)
2892 static inline int security_socket_shutdown(struct socket * sock, int how)
2896 static inline int security_sock_rcv_skb (struct sock * sk,
2897 struct sk_buff * skb)
2902 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2903 int __user *optlen, unsigned len)
2905 return -ENOPROTOOPT;
2908 static inline int security_socket_getpeersec_dgram(struct sk_buff *skb, char **secdata,
2911 return -ENOPROTOOPT;
2914 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2919 static inline void security_sk_free(struct sock *sk)
2923 static inline unsigned int security_sk_sid(struct sock *sk, struct flowi *fl, u8 dir)
2927 #endif /* CONFIG_SECURITY_NETWORK */
2929 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2930 static inline int security_xfrm_policy_alloc(struct xfrm_policy *xp, struct xfrm_user_sec_ctx *sec_ctx)
2932 return security_ops->xfrm_policy_alloc_security(xp, sec_ctx);
2935 static inline int security_xfrm_policy_clone(struct xfrm_policy *old, struct xfrm_policy *new)
2937 return security_ops->xfrm_policy_clone_security(old, new);
2940 static inline void security_xfrm_policy_free(struct xfrm_policy *xp)
2942 security_ops->xfrm_policy_free_security(xp);
2945 static inline int security_xfrm_policy_delete(struct xfrm_policy *xp)
2947 return security_ops->xfrm_policy_delete_security(xp);
2950 static inline int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx)
2952 return security_ops->xfrm_state_alloc_security(x, sec_ctx);
2955 static inline int security_xfrm_state_delete(struct xfrm_state *x)
2957 return security_ops->xfrm_state_delete_security(x);
2960 static inline void security_xfrm_state_free(struct xfrm_state *x)
2962 security_ops->xfrm_state_free_security(x);
2965 static inline int security_xfrm_policy_lookup(struct xfrm_policy *xp, u32 sk_sid, u8 dir)
2967 return security_ops->xfrm_policy_lookup(xp, sk_sid, dir);
2969 #else /* CONFIG_SECURITY_NETWORK_XFRM */
2970 static inline int security_xfrm_policy_alloc(struct xfrm_policy *xp, struct xfrm_user_sec_ctx *sec_ctx)
2975 static inline int security_xfrm_policy_clone(struct xfrm_policy *old, struct xfrm_policy *new)
2980 static inline void security_xfrm_policy_free(struct xfrm_policy *xp)
2984 static inline int security_xfrm_policy_delete(struct xfrm_policy *xp)
2989 static inline int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx)
2994 static inline void security_xfrm_state_free(struct xfrm_state *x)
2998 static inline int security_xfrm_state_delete(struct xfrm_policy *xp)
3003 static inline int security_xfrm_policy_lookup(struct xfrm_policy *xp, u32 sk_sid, u8 dir)
3007 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
3010 #ifdef CONFIG_SECURITY
3011 static inline int security_key_alloc(struct key *key)
3013 return security_ops->key_alloc(key);
3016 static inline void security_key_free(struct key *key)
3018 security_ops->key_free(key);
3021 static inline int security_key_permission(key_ref_t key_ref,
3022 struct task_struct *context,
3025 return security_ops->key_permission(key_ref, context, perm);
3030 static inline int security_key_alloc(struct key *key)
3035 static inline void security_key_free(struct key *key)
3039 static inline int security_key_permission(key_ref_t key_ref,
3040 struct task_struct *context,
3047 #endif /* CONFIG_KEYS */
3049 #endif /* ! __LINUX_SECURITY_H */