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>
37 * These functions are in security/capability.c and are used
38 * as the default capabilities functions
40 extern int cap_capable (struct task_struct *tsk, int cap);
41 extern int cap_settime (struct timespec *ts, struct timezone *tz);
42 extern int cap_ptrace (struct task_struct *parent, struct task_struct *child);
43 extern int cap_capget (struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
44 extern int cap_capset_check (struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
45 extern void cap_capset_set (struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
46 extern int cap_bprm_set_security (struct linux_binprm *bprm);
47 extern void cap_bprm_apply_creds (struct linux_binprm *bprm, int unsafe);
48 extern int cap_bprm_secureexec(struct linux_binprm *bprm);
49 extern int cap_inode_setxattr(struct dentry *dentry, char *name, void *value, size_t size, int flags);
50 extern int cap_inode_removexattr(struct dentry *dentry, char *name);
51 extern int cap_task_post_setuid (uid_t old_ruid, uid_t old_euid, uid_t old_suid, int flags);
52 extern void cap_task_reparent_to_init (struct task_struct *p);
53 extern int cap_syslog (int type);
54 extern int cap_vm_enough_memory (long pages);
62 extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
63 extern int cap_netlink_recv(struct sk_buff *skb);
66 * Values used in the task_security_ops calls
68 /* setuid or setgid, id0 == uid or gid */
69 #define LSM_SETID_ID 1
71 /* setreuid or setregid, id0 == real, id1 == eff */
72 #define LSM_SETID_RE 2
74 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
75 #define LSM_SETID_RES 4
77 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
78 #define LSM_SETID_FS 8
80 /* forward declares to avoid warnings */
83 struct swap_info_struct;
85 /* bprm_apply_creds unsafe reasons */
86 #define LSM_UNSAFE_SHARE 1
87 #define LSM_UNSAFE_PTRACE 2
88 #define LSM_UNSAFE_PTRACE_CAP 4
90 #ifdef CONFIG_SECURITY
93 * struct security_operations - main security structure
95 * Security hooks for program execution operations.
97 * @bprm_alloc_security:
98 * Allocate and attach a security structure to the @bprm->security field.
99 * The security field is initialized to NULL when the bprm structure is
101 * @bprm contains the linux_binprm structure to be modified.
102 * Return 0 if operation was successful.
103 * @bprm_free_security:
104 * @bprm contains the linux_binprm structure to be modified.
105 * Deallocate and clear the @bprm->security field.
107 * Compute and set the security attributes of a process being transformed
108 * by an execve operation based on the old attributes (current->security)
109 * and the information saved in @bprm->security by the set_security hook.
110 * Since this hook function (and its caller) are void, this hook can not
111 * return an error. However, it can leave the security attributes of the
112 * process unchanged if an access failure occurs at this point.
113 * bprm_apply_creds is called under task_lock. @unsafe indicates various
114 * reasons why it may be unsafe to change security state.
115 * @bprm contains the linux_binprm structure.
116 * @bprm_post_apply_creds:
117 * Runs after bprm_apply_creds with the task_lock dropped, so that
118 * functions which cannot be called safely under the task_lock can
119 * be used. This hook is a good place to perform state changes on
120 * the process such as closing open file descriptors to which access
121 * is no longer granted if the attributes were changed.
122 * Note that a security module might need to save state between
123 * bprm_apply_creds and bprm_post_apply_creds to store the decision
124 * on whether the process may proceed.
125 * @bprm contains the linux_binprm structure.
126 * @bprm_set_security:
127 * Save security information in the bprm->security field, typically based
128 * on information about the bprm->file, for later use by the apply_creds
129 * hook. This hook may also optionally check permissions (e.g. for
130 * transitions between security domains).
131 * This hook may be called multiple times during a single execve, e.g. for
132 * interpreters. The hook can tell whether it has already been called by
133 * checking to see if @bprm->security is non-NULL. If so, then the hook
134 * may decide either to retain the security information saved earlier or
136 * @bprm contains the linux_binprm structure.
137 * Return 0 if the hook is successful and permission is granted.
138 * @bprm_check_security:
139 * This hook mediates the point when a search for a binary handler will
140 * begin. It allows a check the @bprm->security value which is set in
141 * the preceding set_security call. The primary difference from
142 * set_security is that the argv list and envp list are reliably
143 * available in @bprm. This hook may be called multiple times
144 * during a single execve; and in each pass set_security is called
146 * @bprm contains the linux_binprm structure.
147 * Return 0 if the hook is successful and permission is granted.
149 * Return a boolean value (0 or 1) indicating whether a "secure exec"
150 * is required. The flag is passed in the auxiliary table
151 * on the initial stack to the ELF interpreter to indicate whether libc
152 * should enable secure mode.
153 * @bprm contains the linux_binprm structure.
155 * Security hooks for filesystem operations.
157 * @sb_alloc_security:
158 * Allocate and attach a security structure to the sb->s_security field.
159 * The s_security field is initialized to NULL when the structure is
161 * @sb contains the super_block structure to be modified.
162 * Return 0 if operation was successful.
164 * Deallocate and clear the sb->s_security field.
165 * @sb contains the super_block structure to be modified.
167 * Check permission before obtaining filesystem statistics for the @sb
169 * @sb contains the super_block structure for the filesystem.
170 * Return 0 if permission is granted.
172 * Check permission before an object specified by @dev_name is mounted on
173 * the mount point named by @nd. For an ordinary mount, @dev_name
174 * identifies a device if the file system type requires a device. For a
175 * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a
176 * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
177 * pathname of the object being mounted.
178 * @dev_name contains the name for object being mounted.
179 * @nd contains the nameidata structure for mount point object.
180 * @type contains the filesystem type.
181 * @flags contains the mount flags.
182 * @data contains the filesystem-specific data.
183 * Return 0 if permission is granted.
185 * Allow mount option data to be copied prior to parsing by the filesystem,
186 * so that the security module can extract security-specific mount
187 * options cleanly (a filesystem may modify the data e.g. with strsep()).
188 * This also allows the original mount data to be stripped of security-
189 * specific options to avoid having to make filesystems aware of them.
190 * @type the type of filesystem being mounted.
191 * @orig the original mount data copied from userspace.
192 * @copy copied data which will be passed to the security module.
193 * Returns 0 if the copy was successful.
195 * Check permission before the device with superblock @mnt->sb is mounted
196 * on the mount point named by @nd.
197 * @mnt contains the vfsmount for device being mounted.
198 * @nd contains the nameidata object for the mount point.
199 * Return 0 if permission is granted.
201 * Check permission before the @mnt file system is unmounted.
202 * @mnt contains the mounted file system.
203 * @flags contains the unmount flags, e.g. MNT_FORCE.
204 * Return 0 if permission is granted.
206 * Close any files in the @mnt mounted filesystem that are held open by
207 * the security module. This hook is called during an umount operation
208 * prior to checking whether the filesystem is still busy.
209 * @mnt contains the mounted filesystem.
211 * Handle a failed umount of the @mnt mounted filesystem, e.g. re-opening
212 * any files that were closed by umount_close. This hook is called during
213 * an umount operation if the umount fails after a call to the
215 * @mnt contains the mounted filesystem.
217 * Update the security module's state when a filesystem is remounted.
218 * This hook is only called if the remount was successful.
219 * @mnt contains the mounted file system.
220 * @flags contains the new filesystem flags.
221 * @data contains the filesystem-specific data.
222 * @sb_post_mountroot:
223 * Update the security module's state when the root filesystem is mounted.
224 * This hook is only called if the mount was successful.
226 * Update the security module's state when a filesystem is mounted.
227 * This hook is called any time a mount is successfully grafetd to
229 * @mnt contains the mounted filesystem.
230 * @mountpoint_nd contains the nameidata structure for the mount point.
232 * Check permission before pivoting the root filesystem.
233 * @old_nd contains the nameidata structure for the new location of the current root (put_old).
234 * @new_nd contains the nameidata structure for the new root (new_root).
235 * Return 0 if permission is granted.
236 * @sb_post_pivotroot:
237 * Update module state after a successful pivot.
238 * @old_nd contains the nameidata structure for the old root.
239 * @new_nd contains the nameidata structure for the new root.
241 * Security hooks for inode operations.
243 * @inode_alloc_security:
244 * Allocate and attach a security structure to @inode->i_security. The
245 * i_security field is initialized to NULL when the inode structure is
247 * @inode contains the inode structure.
248 * Return 0 if operation was successful.
249 * @inode_free_security:
250 * @inode contains the inode structure.
251 * Deallocate the inode security structure and set @inode->i_security to
253 * @inode_init_security:
254 * Obtain the security attribute name suffix and value to set on a newly
255 * created inode and set up the incore security field for the new inode.
256 * This hook is called by the fs code as part of the inode creation
257 * transaction and provides for atomic labeling of the inode, unlike
258 * the post_create/mkdir/... hooks called by the VFS. The hook function
259 * is expected to allocate the name and value via kmalloc, with the caller
260 * being responsible for calling kfree after using them.
261 * If the security module does not use security attributes or does
262 * not wish to put a security attribute on this particular inode,
263 * then it should return -EOPNOTSUPP to skip this processing.
264 * @inode contains the inode structure of the newly created inode.
265 * @dir contains the inode structure of the parent directory.
266 * @name will be set to the allocated name suffix (e.g. selinux).
267 * @value will be set to the allocated attribute value.
268 * @len will be set to the length of the value.
269 * Returns 0 if @name and @value have been successfully set,
270 * -EOPNOTSUPP if no security attribute is needed, or
271 * -ENOMEM on memory allocation failure.
273 * Check permission to create a regular file.
274 * @dir contains inode structure of the parent of the new file.
275 * @dentry contains the dentry structure for the file to be created.
276 * @mode contains the file mode of the file to be created.
277 * Return 0 if permission is granted.
278 * @inode_post_create:
279 * Set the security attributes on a newly created regular file. This hook
280 * is called after a file has been successfully created.
281 * @dir contains the inode structure of the parent directory of the new file.
282 * @dentry contains the the dentry structure for the newly created file.
283 * @mode contains the file mode.
285 * Check permission before creating a new hard link to a file.
286 * @old_dentry contains the dentry structure for an existing link to the file.
287 * @dir contains the inode structure of the parent directory of the new link.
288 * @new_dentry contains the dentry structure for the new link.
289 * Return 0 if permission is granted.
291 * Set security attributes for a new hard link to a file.
292 * @old_dentry contains the dentry structure for the existing link.
293 * @dir contains the inode structure of the parent directory of the new file.
294 * @new_dentry contains the dentry structure for the new file link.
296 * Check the permission to remove a hard link to a file.
297 * @dir contains the inode structure of parent directory of the file.
298 * @dentry contains the dentry structure for file to be unlinked.
299 * Return 0 if permission is granted.
301 * Check the permission to create a symbolic link to a file.
302 * @dir contains the inode structure of parent directory of the symbolic link.
303 * @dentry contains the dentry structure of the symbolic link.
304 * @old_name contains the pathname of file.
305 * Return 0 if permission is granted.
306 * @inode_post_symlink:
307 * @dir contains the inode structure of the parent directory of the new link.
308 * @dentry contains the dentry structure of new symbolic link.
309 * @old_name contains the pathname of file.
310 * Set security attributes for a newly created symbolic link. Note that
311 * @dentry->d_inode may be NULL, since the filesystem might not
312 * instantiate the dentry (e.g. NFS).
314 * Check permissions to create a new directory in the existing directory
315 * associated with inode strcture @dir.
316 * @dir containst the inode structure of parent of the directory to be created.
317 * @dentry contains the dentry structure of new directory.
318 * @mode contains the mode of new directory.
319 * Return 0 if permission is granted.
321 * Set security attributes on a newly created directory.
322 * @dir contains the inode structure of parent of the directory to be created.
323 * @dentry contains the dentry structure of new directory.
324 * @mode contains the mode of new directory.
326 * Check the permission to remove a directory.
327 * @dir contains the inode structure of parent of the directory to be removed.
328 * @dentry contains the dentry structure of directory to be removed.
329 * Return 0 if permission is granted.
331 * Check permissions when creating a special file (or a socket or a fifo
332 * file created via the mknod system call). Note that if mknod operation
333 * is being done for a regular file, then the create hook will be called
335 * @dir contains the inode structure of parent of the new file.
336 * @dentry contains the dentry structure of the new file.
337 * @mode contains the mode of the new file.
338 * @dev contains the the device number.
339 * Return 0 if permission is granted.
341 * Set security attributes on a newly created special file (or socket or
342 * fifo file created via the mknod system call).
343 * @dir contains the inode structure of parent of the new node.
344 * @dentry contains the dentry structure of the new node.
345 * @mode contains the mode of the new node.
346 * @dev contains the the device number.
348 * Check for permission to rename a file or directory.
349 * @old_dir contains the inode structure for parent of the old link.
350 * @old_dentry contains the dentry structure of the old link.
351 * @new_dir contains the inode structure for parent of the new link.
352 * @new_dentry contains the dentry structure of the new link.
353 * Return 0 if permission is granted.
354 * @inode_post_rename:
355 * Set security attributes on a renamed file or directory.
356 * @old_dir contains the inode structure for parent of the old link.
357 * @old_dentry contains the dentry structure of the old link.
358 * @new_dir contains the inode structure for parent of the new link.
359 * @new_dentry contains the dentry structure of the new link.
361 * Check the permission to read the symbolic link.
362 * @dentry contains the dentry structure for the file link.
363 * Return 0 if permission is granted.
364 * @inode_follow_link:
365 * Check permission to follow a symbolic link when looking up a pathname.
366 * @dentry contains the dentry structure for the link.
367 * @nd contains the nameidata structure for the parent directory.
368 * Return 0 if permission is granted.
370 * Check permission before accessing an inode. This hook is called by the
371 * existing Linux permission function, so a security module can use it to
372 * provide additional checking for existing Linux permission checks.
373 * Notice that this hook is called when a file is opened (as well as many
374 * other operations), whereas the file_security_ops permission hook is
375 * called when the actual read/write operations are performed.
376 * @inode contains the inode structure to check.
377 * @mask contains the permission mask.
378 * @nd contains the nameidata (may be NULL).
379 * Return 0 if permission is granted.
381 * Check permission before setting file attributes. Note that the kernel
382 * call to notify_change is performed from several locations, whenever
383 * file attributes change (such as when a file is truncated, chown/chmod
384 * operations, transferring disk quotas, etc).
385 * @dentry contains the dentry structure for the file.
386 * @attr is the iattr structure containing the new file attributes.
387 * Return 0 if permission is granted.
389 * Check permission before obtaining file attributes.
390 * @mnt is the vfsmount where the dentry was looked up
391 * @dentry contains the dentry structure for the file.
392 * Return 0 if permission is granted.
394 * @inode contains the inode structure for deleted inode.
395 * This hook is called when a deleted inode is released (i.e. an inode
396 * with no hard links has its use count drop to zero). A security module
397 * can use this hook to release any persistent label associated with the
400 * Check permission before setting the extended attributes
401 * @value identified by @name for @dentry.
402 * Return 0 if permission is granted.
403 * @inode_post_setxattr:
404 * Update inode security field after successful setxattr operation.
405 * @value identified by @name for @dentry.
407 * Check permission before obtaining the extended attributes
408 * identified by @name for @dentry.
409 * Return 0 if permission is granted.
411 * Check permission before obtaining the list of extended attribute
413 * Return 0 if permission is granted.
414 * @inode_removexattr:
415 * Check permission before removing the extended attribute
416 * identified by @name for @dentry.
417 * Return 0 if permission is granted.
418 * @inode_getsecurity:
419 * Copy the extended attribute representation of the security label
420 * associated with @name for @inode into @buffer. @buffer may be
421 * NULL to request the size of the buffer required. @size indicates
422 * the size of @buffer in bytes. Note that @name is the remainder
423 * of the attribute name after the security. prefix has been removed.
424 * Return number of bytes used/required on success.
425 * @inode_setsecurity:
426 * Set the security label associated with @name for @inode from the
427 * extended attribute value @value. @size indicates the size of the
428 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
429 * Note that @name is the remainder of the attribute name after the
430 * security. prefix has been removed.
431 * Return 0 on success.
432 * @inode_listsecurity:
433 * Copy the extended attribute names for the security labels
434 * associated with @inode into @buffer. The maximum size of @buffer
435 * is specified by @buffer_size. @buffer may be NULL to request
436 * the size of the buffer required.
437 * Returns number of bytes used/required on success.
439 * Security hooks for file operations
442 * Check file permissions before accessing an open file. This hook is
443 * called by various operations that read or write files. A security
444 * module can use this hook to perform additional checking on these
445 * operations, e.g. to revalidate permissions on use to support privilege
446 * bracketing or policy changes. Notice that this hook is used when the
447 * actual read/write operations are performed, whereas the
448 * inode_security_ops hook is called when a file is opened (as well as
449 * many other operations).
450 * Caveat: Although this hook can be used to revalidate permissions for
451 * various system call operations that read or write files, it does not
452 * address the revalidation of permissions for memory-mapped files.
453 * Security modules must handle this separately if they need such
455 * @file contains the file structure being accessed.
456 * @mask contains the requested permissions.
457 * Return 0 if permission is granted.
458 * @file_alloc_security:
459 * Allocate and attach a security structure to the file->f_security field.
460 * The security field is initialized to NULL when the structure is first
462 * @file contains the file structure to secure.
463 * Return 0 if the hook is successful and permission is granted.
464 * @file_free_security:
465 * Deallocate and free any security structures stored in file->f_security.
466 * @file contains the file structure being modified.
468 * @file contains the file structure.
469 * @cmd contains the operation to perform.
470 * @arg contains the operational arguments.
471 * Check permission for an ioctl operation on @file. Note that @arg can
472 * sometimes represents a user space pointer; in other cases, it may be a
473 * simple integer value. When @arg represents a user space pointer, it
474 * should never be used by the security module.
475 * Return 0 if permission is granted.
477 * Check permissions for a mmap operation. The @file may be NULL, e.g.
478 * if mapping anonymous memory.
479 * @file contains the file structure for file to map (may be NULL).
480 * @reqprot contains the protection requested by the application.
481 * @prot contains the protection that will be applied by the kernel.
482 * @flags contains the operational flags.
483 * Return 0 if permission is granted.
485 * Check permissions before changing memory access permissions.
486 * @vma contains the memory region to modify.
487 * @reqprot contains the protection requested by the application.
488 * @prot contains the protection that will be applied by the kernel.
489 * Return 0 if permission is granted.
491 * Check permission before performing file locking operations.
492 * Note: this hook mediates both flock and fcntl style locks.
493 * @file contains the file structure.
494 * @cmd contains the posix-translated lock operation to perform
495 * (e.g. F_RDLCK, F_WRLCK).
496 * Return 0 if permission is granted.
498 * Check permission before allowing the file operation specified by @cmd
499 * from being performed on the file @file. Note that @arg can sometimes
500 * represents a user space pointer; in other cases, it may be a simple
501 * integer value. When @arg represents a user space pointer, it should
502 * never be used by the security module.
503 * @file contains the file structure.
504 * @cmd contains the operation to be performed.
505 * @arg contains the operational arguments.
506 * Return 0 if permission is granted.
508 * Save owner security information (typically from current->security) in
509 * file->f_security for later use by the send_sigiotask hook.
510 * @file contains the file structure to update.
511 * Return 0 on success.
512 * @file_send_sigiotask:
513 * Check permission for the file owner @fown to send SIGIO or SIGURG to the
514 * process @tsk. Note that this hook is sometimes called from interrupt.
515 * Note that the fown_struct, @fown, is never outside the context of a
516 * struct file, so the file structure (and associated security information)
517 * can always be obtained:
518 * (struct file *)((long)fown - offsetof(struct file,f_owner));
519 * @tsk contains the structure of task receiving signal.
520 * @fown contains the file owner information.
521 * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
522 * Return 0 if permission is granted.
524 * This hook allows security modules to control the ability of a process
525 * to receive an open file descriptor via socket IPC.
526 * @file contains the file structure being received.
527 * Return 0 if permission is granted.
529 * Security hooks for task operations.
532 * Check permission before creating a child process. See the clone(2)
533 * manual page for definitions of the @clone_flags.
534 * @clone_flags contains the flags indicating what should be shared.
535 * Return 0 if permission is granted.
536 * @task_alloc_security:
537 * @p contains the task_struct for child process.
538 * Allocate and attach a security structure to the p->security field. The
539 * security field is initialized to NULL when the task structure is
541 * Return 0 if operation was successful.
542 * @task_free_security:
543 * @p contains the task_struct for process.
544 * Deallocate and clear the p->security field.
546 * Check permission before setting one or more of the user identity
547 * attributes of the current process. The @flags parameter indicates
548 * which of the set*uid system calls invoked this hook and how to
549 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
550 * definitions at the beginning of this file for the @flags values and
552 * @id0 contains a uid.
553 * @id1 contains a uid.
554 * @id2 contains a uid.
555 * @flags contains one of the LSM_SETID_* values.
556 * Return 0 if permission is granted.
558 * Update the module's state after setting one or more of the user
559 * identity attributes of the current process. The @flags parameter
560 * indicates which of the set*uid system calls invoked this hook. If
561 * @flags is LSM_SETID_FS, then @old_ruid is the old fs uid and the other
562 * parameters are not used.
563 * @old_ruid contains the old real uid (or fs uid if LSM_SETID_FS).
564 * @old_euid contains the old effective uid (or -1 if LSM_SETID_FS).
565 * @old_suid contains the old saved uid (or -1 if LSM_SETID_FS).
566 * @flags contains one of the LSM_SETID_* values.
567 * Return 0 on success.
569 * Check permission before setting one or more of the group identity
570 * attributes of the current process. The @flags parameter indicates
571 * which of the set*gid system calls invoked this hook and how to
572 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
573 * definitions at the beginning of this file for the @flags values and
575 * @id0 contains a gid.
576 * @id1 contains a gid.
577 * @id2 contains a gid.
578 * @flags contains one of the LSM_SETID_* values.
579 * Return 0 if permission is granted.
581 * Check permission before setting the process group identifier of the
582 * process @p to @pgid.
583 * @p contains the task_struct for process being modified.
584 * @pgid contains the new pgid.
585 * Return 0 if permission is granted.
587 * Check permission before getting the process group identifier of the
589 * @p contains the task_struct for the process.
590 * Return 0 if permission is granted.
592 * Check permission before getting the session identifier of the process
594 * @p contains the task_struct for the process.
595 * Return 0 if permission is granted.
597 * Check permission before setting the supplementary group set of the
599 * @group_info contains the new group information.
600 * Return 0 if permission is granted.
602 * Check permission before setting the nice value of @p to @nice.
603 * @p contains the task_struct of process.
604 * @nice contains the new nice value.
605 * Return 0 if permission is granted.
607 * Check permission before setting the resource limits of the current
608 * process for @resource to @new_rlim. The old resource limit values can
609 * be examined by dereferencing (current->signal->rlim + resource).
610 * @resource contains the resource whose limit is being set.
611 * @new_rlim contains the new limits for @resource.
612 * Return 0 if permission is granted.
613 * @task_setscheduler:
614 * Check permission before setting scheduling policy and/or parameters of
615 * process @p based on @policy and @lp.
616 * @p contains the task_struct for process.
617 * @policy contains the scheduling policy.
618 * @lp contains the scheduling parameters.
619 * Return 0 if permission is granted.
620 * @task_getscheduler:
621 * Check permission before obtaining scheduling information for process
623 * @p contains the task_struct for process.
624 * Return 0 if permission is granted.
626 * Check permission before sending signal @sig to @p. @info can be NULL,
627 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
628 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
629 * from the kernel and should typically be permitted.
630 * SIGIO signals are handled separately by the send_sigiotask hook in
632 * @p contains the task_struct for process.
633 * @info contains the signal information.
634 * @sig contains the signal value.
635 * Return 0 if permission is granted.
637 * Check permission before allowing a process to reap a child process @p
638 * and collect its status information.
639 * @p contains the task_struct for process.
640 * Return 0 if permission is granted.
642 * Check permission before performing a process control operation on the
644 * @option contains the operation.
645 * @arg2 contains a argument.
646 * @arg3 contains a argument.
647 * @arg4 contains a argument.
648 * @arg5 contains a argument.
649 * Return 0 if permission is granted.
650 * @task_reparent_to_init:
651 * Set the security attributes in @p->security for a kernel thread that
652 * is being reparented to the init task.
653 * @p contains the task_struct for the kernel thread.
655 * Set the security attributes for an inode based on an associated task's
656 * security attributes, e.g. for /proc/pid inodes.
657 * @p contains the task_struct for the task.
658 * @inode contains the inode structure for the inode.
660 * Security hooks for Netlink messaging.
663 * Save security information for a netlink message so that permission
664 * checking can be performed when the message is processed. The security
665 * information can be saved using the eff_cap field of the
666 * netlink_skb_parms structure. Also may be used to provide fine
667 * grained control over message transmission.
668 * @sk associated sock of task sending the message.,
669 * @skb contains the sk_buff structure for the netlink message.
670 * Return 0 if the information was successfully saved and message
671 * is allowed to be transmitted.
673 * Check permission before processing the received netlink message in
675 * @skb contains the sk_buff structure for the netlink message.
676 * Return 0 if permission is granted.
678 * Security hooks for Unix domain networking.
680 * @unix_stream_connect:
681 * Check permissions before establishing a Unix domain stream connection
682 * between @sock and @other.
683 * @sock contains the socket structure.
684 * @other contains the peer socket structure.
685 * Return 0 if permission is granted.
687 * Check permissions before connecting or sending datagrams from @sock to
689 * @sock contains the socket structure.
690 * @sock contains the peer socket structure.
691 * Return 0 if permission is granted.
693 * The @unix_stream_connect and @unix_may_send hooks were necessary because
694 * Linux provides an alternative to the conventional file name space for Unix
695 * domain sockets. Whereas binding and connecting to sockets in the file name
696 * space is mediated by the typical file permissions (and caught by the mknod
697 * and permission hooks in inode_security_ops), binding and connecting to
698 * sockets in the abstract name space is completely unmediated. Sufficient
699 * control of Unix domain sockets in the abstract name space isn't possible
700 * using only the socket layer hooks, since we need to know the actual target
701 * socket, which is not looked up until we are inside the af_unix code.
703 * Security hooks for socket operations.
706 * Check permissions prior to creating a new socket.
707 * @family contains the requested protocol family.
708 * @type contains the requested communications type.
709 * @protocol contains the requested protocol.
710 * @kern set to 1 if a kernel socket.
711 * Return 0 if permission is granted.
712 * @socket_post_create:
713 * This hook allows a module to update or allocate a per-socket security
714 * structure. Note that the security field was not added directly to the
715 * socket structure, but rather, the socket security information is stored
716 * in the associated inode. Typically, the inode alloc_security hook will
717 * allocate and and attach security information to
718 * sock->inode->i_security. This hook may be used to update the
719 * sock->inode->i_security field with additional information that wasn't
720 * available when the inode was allocated.
721 * @sock contains the newly created socket structure.
722 * @family contains the requested protocol family.
723 * @type contains the requested communications type.
724 * @protocol contains the requested protocol.
725 * @kern set to 1 if a kernel socket.
727 * Check permission before socket protocol layer bind operation is
728 * performed and the socket @sock is bound to the address specified in the
729 * @address parameter.
730 * @sock contains the socket structure.
731 * @address contains the address to bind to.
732 * @addrlen contains the length of address.
733 * Return 0 if permission is granted.
735 * Check permission before socket protocol layer connect operation
736 * attempts to connect socket @sock to a remote address, @address.
737 * @sock contains the socket structure.
738 * @address contains the address of remote endpoint.
739 * @addrlen contains the length of address.
740 * Return 0 if permission is granted.
742 * Check permission before socket protocol layer listen operation.
743 * @sock contains the socket structure.
744 * @backlog contains the maximum length for the pending connection queue.
745 * Return 0 if permission is granted.
747 * Check permission before accepting a new connection. Note that the new
748 * socket, @newsock, has been created and some information copied to it,
749 * but the accept operation has not actually been performed.
750 * @sock contains the listening socket structure.
751 * @newsock contains the newly created server socket for connection.
752 * Return 0 if permission is granted.
753 * @socket_post_accept:
754 * This hook allows a security module to copy security
755 * information into the newly created socket's inode.
756 * @sock contains the listening socket structure.
757 * @newsock contains the newly created server socket for connection.
759 * Check permission before transmitting a message to another socket.
760 * @sock contains the socket structure.
761 * @msg contains the message to be transmitted.
762 * @size contains the size of message.
763 * Return 0 if permission is granted.
765 * Check permission before receiving a message from a socket.
766 * @sock contains the socket structure.
767 * @msg contains the message structure.
768 * @size contains the size of message structure.
769 * @flags contains the operational flags.
770 * Return 0 if permission is granted.
771 * @socket_getsockname:
772 * Check permission before the local address (name) of the socket object
773 * @sock is retrieved.
774 * @sock contains the socket structure.
775 * Return 0 if permission is granted.
776 * @socket_getpeername:
777 * Check permission before the remote address (name) of a socket object
778 * @sock is retrieved.
779 * @sock contains the socket structure.
780 * Return 0 if permission is granted.
781 * @socket_getsockopt:
782 * Check permissions before retrieving the options associated with socket
784 * @sock contains the socket structure.
785 * @level contains the protocol level to retrieve option from.
786 * @optname contains the name of option to retrieve.
787 * Return 0 if permission is granted.
788 * @socket_setsockopt:
789 * Check permissions before setting the options associated with socket
791 * @sock contains the socket structure.
792 * @level contains the protocol level to set options for.
793 * @optname contains the name of the option to set.
794 * Return 0 if permission is granted.
796 * Checks permission before all or part of a connection on the socket
797 * @sock is shut down.
798 * @sock contains the socket structure.
799 * @how contains the flag indicating how future sends and receives are handled.
800 * Return 0 if permission is granted.
801 * @socket_sock_rcv_skb:
802 * Check permissions on incoming network packets. This hook is distinct
803 * from Netfilter's IP input hooks since it is the first time that the
804 * incoming sk_buff @skb has been associated with a particular socket, @sk.
805 * @sk contains the sock (not socket) associated with the incoming sk_buff.
806 * @skb contains the incoming network data.
807 * @socket_getpeersec:
808 * This hook allows the security module to provide peer socket security
809 * state to userspace via getsockopt SO_GETPEERSEC.
810 * @sock is the local socket.
811 * @optval userspace memory where the security state is to be copied.
812 * @optlen userspace int where the module should copy the actual length
813 * of the security state.
814 * @len as input is the maximum length to copy to userspace provided
816 * Return 0 if all is well, otherwise, typical getsockopt return
818 * @sk_alloc_security:
819 * Allocate and attach a security structure to the sk->sk_security field,
820 * which is used to copy security attributes between local stream sockets.
822 * Deallocate security structure.
824 * Security hooks affecting all System V IPC operations.
827 * Check permissions for access to IPC
828 * @ipcp contains the kernel IPC permission structure
829 * @flag contains the desired (requested) permission set
830 * Return 0 if permission is granted.
832 * Security hooks for individual messages held in System V IPC message queues
833 * @msg_msg_alloc_security:
834 * Allocate and attach a security structure to the msg->security field.
835 * The security field is initialized to NULL when the structure is first
837 * @msg contains the message structure to be modified.
838 * Return 0 if operation was successful and permission is granted.
839 * @msg_msg_free_security:
840 * Deallocate the security structure for this message.
841 * @msg contains the message structure to be modified.
843 * Security hooks for System V IPC Message Queues
845 * @msg_queue_alloc_security:
846 * Allocate and attach a security structure to the
847 * msq->q_perm.security field. The security field is initialized to
848 * NULL when the structure is first created.
849 * @msq contains the message queue structure to be modified.
850 * Return 0 if operation was successful and permission is granted.
851 * @msg_queue_free_security:
852 * Deallocate security structure for this message queue.
853 * @msq contains the message queue structure to be modified.
854 * @msg_queue_associate:
855 * Check permission when a message queue is requested through the
856 * msgget system call. This hook is only called when returning the
857 * message queue identifier for an existing message queue, not when a
858 * new message queue is created.
859 * @msq contains the message queue to act upon.
860 * @msqflg contains the operation control flags.
861 * Return 0 if permission is granted.
863 * Check permission when a message control operation specified by @cmd
864 * is to be performed on the message queue @msq.
865 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
866 * @msq contains the message queue to act upon. May be NULL.
867 * @cmd contains the operation to be performed.
868 * Return 0 if permission is granted.
870 * Check permission before a message, @msg, is enqueued on the message
872 * @msq contains the message queue to send message to.
873 * @msg contains the message to be enqueued.
874 * @msqflg contains operational flags.
875 * Return 0 if permission is granted.
877 * Check permission before a message, @msg, is removed from the message
878 * queue, @msq. The @target task structure contains a pointer to the
879 * process that will be receiving the message (not equal to the current
880 * process when inline receives are being performed).
881 * @msq contains the message queue to retrieve message from.
882 * @msg contains the message destination.
883 * @target contains the task structure for recipient process.
884 * @type contains the type of message requested.
885 * @mode contains the operational flags.
886 * Return 0 if permission is granted.
888 * Security hooks for System V Shared Memory Segments
890 * @shm_alloc_security:
891 * Allocate and attach a security structure to the shp->shm_perm.security
892 * field. The security field is initialized to NULL when the structure is
894 * @shp contains the shared memory structure to be modified.
895 * Return 0 if operation was successful and permission is granted.
896 * @shm_free_security:
897 * Deallocate the security struct for this memory segment.
898 * @shp contains the shared memory structure to be modified.
900 * Check permission when a shared memory region is requested through the
901 * shmget system call. This hook is only called when returning the shared
902 * memory region identifier for an existing region, not when a new shared
903 * memory region is created.
904 * @shp contains the shared memory structure to be modified.
905 * @shmflg contains the operation control flags.
906 * Return 0 if permission is granted.
908 * Check permission when a shared memory control operation specified by
909 * @cmd is to be performed on the shared memory region @shp.
910 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
911 * @shp contains shared memory structure to be modified.
912 * @cmd contains the operation to be performed.
913 * Return 0 if permission is granted.
915 * Check permissions prior to allowing the shmat system call to attach the
916 * shared memory segment @shp to the data segment of the calling process.
917 * The attaching address is specified by @shmaddr.
918 * @shp contains the shared memory structure to be modified.
919 * @shmaddr contains the address to attach memory region to.
920 * @shmflg contains the operational flags.
921 * Return 0 if permission is granted.
923 * Security hooks for System V Semaphores
925 * @sem_alloc_security:
926 * Allocate and attach a security structure to the sma->sem_perm.security
927 * field. The security field is initialized to NULL when the structure is
929 * @sma contains the semaphore structure
930 * Return 0 if operation was successful and permission is granted.
931 * @sem_free_security:
932 * deallocate security struct for this semaphore
933 * @sma contains the semaphore structure.
935 * Check permission when a semaphore is requested through the semget
936 * system call. This hook is only called when returning the semaphore
937 * identifier for an existing semaphore, not when a new one must be
939 * @sma contains the semaphore structure.
940 * @semflg contains the operation control flags.
941 * Return 0 if permission is granted.
943 * Check permission when a semaphore operation specified by @cmd is to be
944 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
945 * IPC_INFO or SEM_INFO.
946 * @sma contains the semaphore structure. May be NULL.
947 * @cmd contains the operation to be performed.
948 * Return 0 if permission is granted.
950 * Check permissions before performing operations on members of the
951 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
953 * @sma contains the semaphore structure.
954 * @sops contains the operations to perform.
955 * @nsops contains the number of operations to perform.
956 * @alter contains the flag indicating whether changes are to be made.
957 * Return 0 if permission is granted.
960 * Check permission before allowing the @parent process to trace the
962 * Security modules may also want to perform a process tracing check
963 * during an execve in the set_security or apply_creds hooks of
964 * binprm_security_ops if the process is being traced and its security
965 * attributes would be changed by the execve.
966 * @parent contains the task_struct structure for parent process.
967 * @child contains the task_struct structure for child process.
968 * Return 0 if permission is granted.
970 * Get the @effective, @inheritable, and @permitted capability sets for
971 * the @target process. The hook may also perform permission checking to
972 * determine if the current process is allowed to see the capability sets
973 * of the @target process.
974 * @target contains the task_struct structure for target process.
975 * @effective contains the effective capability set.
976 * @inheritable contains the inheritable capability set.
977 * @permitted contains the permitted capability set.
978 * Return 0 if the capability sets were successfully obtained.
980 * Check permission before setting the @effective, @inheritable, and
981 * @permitted capability sets for the @target process.
982 * Caveat: @target is also set to current if a set of processes is
983 * specified (i.e. all processes other than current and init or a
984 * particular process group). Hence, the capset_set hook may need to
985 * revalidate permission to the actual target process.
986 * @target contains the task_struct structure for target process.
987 * @effective contains the effective capability set.
988 * @inheritable contains the inheritable capability set.
989 * @permitted contains the permitted capability set.
990 * Return 0 if permission is granted.
992 * Set the @effective, @inheritable, and @permitted capability sets for
993 * the @target process. Since capset_check cannot always check permission
994 * to the real @target process, this hook may also perform permission
995 * checking to determine if the current process is allowed to set the
996 * capability sets of the @target process. However, this hook has no way
997 * of returning an error due to the structure of the sys_capset code.
998 * @target contains the task_struct structure for target process.
999 * @effective contains the effective capability set.
1000 * @inheritable contains the inheritable capability set.
1001 * @permitted contains the permitted capability set.
1003 * Check permission before enabling or disabling process accounting. If
1004 * accounting is being enabled, then @file refers to the open file used to
1005 * store accounting records. If accounting is being disabled, then @file
1007 * @file contains the file structure for the accounting file (may be NULL).
1008 * Return 0 if permission is granted.
1010 * Check permission before accessing the @table sysctl variable in the
1011 * manner specified by @op.
1012 * @table contains the ctl_table structure for the sysctl variable.
1013 * @op contains the operation (001 = search, 002 = write, 004 = read).
1014 * Return 0 if permission is granted.
1016 * Check whether the @tsk process has the @cap capability.
1017 * @tsk contains the task_struct for the process.
1018 * @cap contains the capability <include/linux/capability.h>.
1019 * Return 0 if the capability is granted for @tsk.
1021 * Check permission before accessing the kernel message ring or changing
1022 * logging to the console.
1023 * See the syslog(2) manual page for an explanation of the @type values.
1024 * @type contains the type of action.
1025 * Return 0 if permission is granted.
1027 * Check permission to change the system time.
1028 * struct timespec and timezone are defined in include/linux/time.h
1029 * @ts contains new time
1030 * @tz contains new timezone
1031 * Return 0 if permission is granted.
1032 * @vm_enough_memory:
1033 * Check permissions for allocating a new virtual mapping.
1034 * @pages contains the number of pages.
1035 * Return 0 if permission is granted.
1037 * @register_security:
1038 * allow module stacking.
1039 * @name contains the name of the security module being stacked.
1040 * @ops contains a pointer to the struct security_operations of the module to stack.
1041 * @unregister_security:
1042 * remove a stacked module.
1043 * @name contains the name of the security module being unstacked.
1044 * @ops contains a pointer to the struct security_operations of the module to unstack.
1046 * This is the main security structure.
1048 struct security_operations {
1049 int (*ptrace) (struct task_struct * parent, struct task_struct * child);
1050 int (*capget) (struct task_struct * target,
1051 kernel_cap_t * effective,
1052 kernel_cap_t * inheritable, kernel_cap_t * permitted);
1053 int (*capset_check) (struct task_struct * target,
1054 kernel_cap_t * effective,
1055 kernel_cap_t * inheritable,
1056 kernel_cap_t * permitted);
1057 void (*capset_set) (struct task_struct * target,
1058 kernel_cap_t * effective,
1059 kernel_cap_t * inheritable,
1060 kernel_cap_t * permitted);
1061 int (*acct) (struct file * file);
1062 int (*sysctl) (struct ctl_table * table, int op);
1063 int (*capable) (struct task_struct * tsk, int cap);
1064 int (*quotactl) (int cmds, int type, int id, struct super_block * sb);
1065 int (*quota_on) (struct dentry * dentry);
1066 int (*syslog) (int type);
1067 int (*settime) (struct timespec *ts, struct timezone *tz);
1068 int (*vm_enough_memory) (long pages);
1070 int (*bprm_alloc_security) (struct linux_binprm * bprm);
1071 void (*bprm_free_security) (struct linux_binprm * bprm);
1072 void (*bprm_apply_creds) (struct linux_binprm * bprm, int unsafe);
1073 void (*bprm_post_apply_creds) (struct linux_binprm * bprm);
1074 int (*bprm_set_security) (struct linux_binprm * bprm);
1075 int (*bprm_check_security) (struct linux_binprm * bprm);
1076 int (*bprm_secureexec) (struct linux_binprm * bprm);
1078 int (*sb_alloc_security) (struct super_block * sb);
1079 void (*sb_free_security) (struct super_block * sb);
1080 int (*sb_copy_data)(struct file_system_type *type,
1081 void *orig, void *copy);
1082 int (*sb_kern_mount) (struct super_block *sb, void *data);
1083 int (*sb_statfs) (struct super_block * sb);
1084 int (*sb_mount) (char *dev_name, struct nameidata * nd,
1085 char *type, unsigned long flags, void *data);
1086 int (*sb_check_sb) (struct vfsmount * mnt, struct nameidata * nd);
1087 int (*sb_umount) (struct vfsmount * mnt, int flags);
1088 void (*sb_umount_close) (struct vfsmount * mnt);
1089 void (*sb_umount_busy) (struct vfsmount * mnt);
1090 void (*sb_post_remount) (struct vfsmount * mnt,
1091 unsigned long flags, void *data);
1092 void (*sb_post_mountroot) (void);
1093 void (*sb_post_addmount) (struct vfsmount * mnt,
1094 struct nameidata * mountpoint_nd);
1095 int (*sb_pivotroot) (struct nameidata * old_nd,
1096 struct nameidata * new_nd);
1097 void (*sb_post_pivotroot) (struct nameidata * old_nd,
1098 struct nameidata * new_nd);
1100 int (*inode_alloc_security) (struct inode *inode);
1101 void (*inode_free_security) (struct inode *inode);
1102 int (*inode_init_security) (struct inode *inode, struct inode *dir,
1103 char **name, void **value, size_t *len);
1104 int (*inode_create) (struct inode *dir,
1105 struct dentry *dentry, int mode);
1106 void (*inode_post_create) (struct inode *dir,
1107 struct dentry *dentry, int mode);
1108 int (*inode_link) (struct dentry *old_dentry,
1109 struct inode *dir, struct dentry *new_dentry);
1110 void (*inode_post_link) (struct dentry *old_dentry,
1111 struct inode *dir, struct dentry *new_dentry);
1112 int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
1113 int (*inode_symlink) (struct inode *dir,
1114 struct dentry *dentry, const char *old_name);
1115 void (*inode_post_symlink) (struct inode *dir,
1116 struct dentry *dentry,
1117 const char *old_name);
1118 int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, int mode);
1119 void (*inode_post_mkdir) (struct inode *dir, struct dentry *dentry,
1121 int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
1122 int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
1123 int mode, dev_t dev);
1124 void (*inode_post_mknod) (struct inode *dir, struct dentry *dentry,
1125 int mode, dev_t dev);
1126 int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
1127 struct inode *new_dir, struct dentry *new_dentry);
1128 void (*inode_post_rename) (struct inode *old_dir,
1129 struct dentry *old_dentry,
1130 struct inode *new_dir,
1131 struct dentry *new_dentry);
1132 int (*inode_readlink) (struct dentry *dentry);
1133 int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
1134 int (*inode_permission) (struct inode *inode, int mask, struct nameidata *nd);
1135 int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
1136 int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
1137 void (*inode_delete) (struct inode *inode);
1138 int (*inode_setxattr) (struct dentry *dentry, char *name, void *value,
1139 size_t size, int flags);
1140 void (*inode_post_setxattr) (struct dentry *dentry, char *name, void *value,
1141 size_t size, int flags);
1142 int (*inode_getxattr) (struct dentry *dentry, char *name);
1143 int (*inode_listxattr) (struct dentry *dentry);
1144 int (*inode_removexattr) (struct dentry *dentry, char *name);
1145 int (*inode_getsecurity)(struct inode *inode, const char *name, void *buffer, size_t size);
1146 int (*inode_setsecurity)(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1147 int (*inode_listsecurity)(struct inode *inode, char *buffer, size_t buffer_size);
1149 int (*file_permission) (struct file * file, int mask);
1150 int (*file_alloc_security) (struct file * file);
1151 void (*file_free_security) (struct file * file);
1152 int (*file_ioctl) (struct file * file, unsigned int cmd,
1154 int (*file_mmap) (struct file * file,
1155 unsigned long reqprot,
1156 unsigned long prot, unsigned long flags);
1157 int (*file_mprotect) (struct vm_area_struct * vma,
1158 unsigned long reqprot,
1159 unsigned long prot);
1160 int (*file_lock) (struct file * file, unsigned int cmd);
1161 int (*file_fcntl) (struct file * file, unsigned int cmd,
1163 int (*file_set_fowner) (struct file * file);
1164 int (*file_send_sigiotask) (struct task_struct * tsk,
1165 struct fown_struct * fown, int sig);
1166 int (*file_receive) (struct file * file);
1168 int (*task_create) (unsigned long clone_flags);
1169 int (*task_alloc_security) (struct task_struct * p);
1170 void (*task_free_security) (struct task_struct * p);
1171 int (*task_setuid) (uid_t id0, uid_t id1, uid_t id2, int flags);
1172 int (*task_post_setuid) (uid_t old_ruid /* or fsuid */ ,
1173 uid_t old_euid, uid_t old_suid, int flags);
1174 int (*task_setgid) (gid_t id0, gid_t id1, gid_t id2, int flags);
1175 int (*task_setpgid) (struct task_struct * p, pid_t pgid);
1176 int (*task_getpgid) (struct task_struct * p);
1177 int (*task_getsid) (struct task_struct * p);
1178 int (*task_setgroups) (struct group_info *group_info);
1179 int (*task_setnice) (struct task_struct * p, int nice);
1180 int (*task_setrlimit) (unsigned int resource, struct rlimit * new_rlim);
1181 int (*task_setscheduler) (struct task_struct * p, int policy,
1182 struct sched_param * lp);
1183 int (*task_getscheduler) (struct task_struct * p);
1184 int (*task_kill) (struct task_struct * p,
1185 struct siginfo * info, int sig);
1186 int (*task_wait) (struct task_struct * p);
1187 int (*task_prctl) (int option, unsigned long arg2,
1188 unsigned long arg3, unsigned long arg4,
1189 unsigned long arg5);
1190 void (*task_reparent_to_init) (struct task_struct * p);
1191 void (*task_to_inode)(struct task_struct *p, struct inode *inode);
1193 int (*ipc_permission) (struct kern_ipc_perm * ipcp, short flag);
1195 int (*msg_msg_alloc_security) (struct msg_msg * msg);
1196 void (*msg_msg_free_security) (struct msg_msg * msg);
1198 int (*msg_queue_alloc_security) (struct msg_queue * msq);
1199 void (*msg_queue_free_security) (struct msg_queue * msq);
1200 int (*msg_queue_associate) (struct msg_queue * msq, int msqflg);
1201 int (*msg_queue_msgctl) (struct msg_queue * msq, int cmd);
1202 int (*msg_queue_msgsnd) (struct msg_queue * msq,
1203 struct msg_msg * msg, int msqflg);
1204 int (*msg_queue_msgrcv) (struct msg_queue * msq,
1205 struct msg_msg * msg,
1206 struct task_struct * target,
1207 long type, int mode);
1209 int (*shm_alloc_security) (struct shmid_kernel * shp);
1210 void (*shm_free_security) (struct shmid_kernel * shp);
1211 int (*shm_associate) (struct shmid_kernel * shp, int shmflg);
1212 int (*shm_shmctl) (struct shmid_kernel * shp, int cmd);
1213 int (*shm_shmat) (struct shmid_kernel * shp,
1214 char __user *shmaddr, int shmflg);
1216 int (*sem_alloc_security) (struct sem_array * sma);
1217 void (*sem_free_security) (struct sem_array * sma);
1218 int (*sem_associate) (struct sem_array * sma, int semflg);
1219 int (*sem_semctl) (struct sem_array * sma, int cmd);
1220 int (*sem_semop) (struct sem_array * sma,
1221 struct sembuf * sops, unsigned nsops, int alter);
1223 int (*netlink_send) (struct sock * sk, struct sk_buff * skb);
1224 int (*netlink_recv) (struct sk_buff * skb);
1226 /* allow module stacking */
1227 int (*register_security) (const char *name,
1228 struct security_operations *ops);
1229 int (*unregister_security) (const char *name,
1230 struct security_operations *ops);
1232 void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1234 int (*getprocattr)(struct task_struct *p, char *name, void *value, size_t size);
1235 int (*setprocattr)(struct task_struct *p, char *name, void *value, size_t size);
1237 #ifdef CONFIG_SECURITY_NETWORK
1238 int (*unix_stream_connect) (struct socket * sock,
1239 struct socket * other, struct sock * newsk);
1240 int (*unix_may_send) (struct socket * sock, struct socket * other);
1242 int (*socket_create) (int family, int type, int protocol, int kern);
1243 void (*socket_post_create) (struct socket * sock, int family,
1244 int type, int protocol, int kern);
1245 int (*socket_bind) (struct socket * sock,
1246 struct sockaddr * address, int addrlen);
1247 int (*socket_connect) (struct socket * sock,
1248 struct sockaddr * address, int addrlen);
1249 int (*socket_listen) (struct socket * sock, int backlog);
1250 int (*socket_accept) (struct socket * sock, struct socket * newsock);
1251 void (*socket_post_accept) (struct socket * sock,
1252 struct socket * newsock);
1253 int (*socket_sendmsg) (struct socket * sock,
1254 struct msghdr * msg, int size);
1255 int (*socket_recvmsg) (struct socket * sock,
1256 struct msghdr * msg, int size, int flags);
1257 int (*socket_getsockname) (struct socket * sock);
1258 int (*socket_getpeername) (struct socket * sock);
1259 int (*socket_getsockopt) (struct socket * sock, int level, int optname);
1260 int (*socket_setsockopt) (struct socket * sock, int level, int optname);
1261 int (*socket_shutdown) (struct socket * sock, int how);
1262 int (*socket_sock_rcv_skb) (struct sock * sk, struct sk_buff * skb);
1263 int (*socket_getpeersec) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
1264 int (*sk_alloc_security) (struct sock *sk, int family, int priority);
1265 void (*sk_free_security) (struct sock *sk);
1266 #endif /* CONFIG_SECURITY_NETWORK */
1269 /* global variables */
1270 extern struct security_operations *security_ops;
1273 static inline int security_ptrace (struct task_struct * parent, struct task_struct * child)
1275 return security_ops->ptrace (parent, child);
1278 static inline int security_capget (struct task_struct *target,
1279 kernel_cap_t *effective,
1280 kernel_cap_t *inheritable,
1281 kernel_cap_t *permitted)
1283 return security_ops->capget (target, effective, inheritable, permitted);
1286 static inline int security_capset_check (struct task_struct *target,
1287 kernel_cap_t *effective,
1288 kernel_cap_t *inheritable,
1289 kernel_cap_t *permitted)
1291 return security_ops->capset_check (target, effective, inheritable, permitted);
1294 static inline void security_capset_set (struct task_struct *target,
1295 kernel_cap_t *effective,
1296 kernel_cap_t *inheritable,
1297 kernel_cap_t *permitted)
1299 security_ops->capset_set (target, effective, inheritable, permitted);
1302 static inline int security_acct (struct file *file)
1304 return security_ops->acct (file);
1307 static inline int security_sysctl(struct ctl_table *table, int op)
1309 return security_ops->sysctl(table, op);
1312 static inline int security_quotactl (int cmds, int type, int id,
1313 struct super_block *sb)
1315 return security_ops->quotactl (cmds, type, id, sb);
1318 static inline int security_quota_on (struct dentry * dentry)
1320 return security_ops->quota_on (dentry);
1323 static inline int security_syslog(int type)
1325 return security_ops->syslog(type);
1328 static inline int security_settime(struct timespec *ts, struct timezone *tz)
1330 return security_ops->settime(ts, tz);
1334 static inline int security_vm_enough_memory(long pages)
1336 return security_ops->vm_enough_memory(pages);
1339 static inline int security_bprm_alloc (struct linux_binprm *bprm)
1341 return security_ops->bprm_alloc_security (bprm);
1343 static inline void security_bprm_free (struct linux_binprm *bprm)
1345 security_ops->bprm_free_security (bprm);
1347 static inline void security_bprm_apply_creds (struct linux_binprm *bprm, int unsafe)
1349 security_ops->bprm_apply_creds (bprm, unsafe);
1351 static inline void security_bprm_post_apply_creds (struct linux_binprm *bprm)
1353 security_ops->bprm_post_apply_creds (bprm);
1355 static inline int security_bprm_set (struct linux_binprm *bprm)
1357 return security_ops->bprm_set_security (bprm);
1360 static inline int security_bprm_check (struct linux_binprm *bprm)
1362 return security_ops->bprm_check_security (bprm);
1365 static inline int security_bprm_secureexec (struct linux_binprm *bprm)
1367 return security_ops->bprm_secureexec (bprm);
1370 static inline int security_sb_alloc (struct super_block *sb)
1372 return security_ops->sb_alloc_security (sb);
1375 static inline void security_sb_free (struct super_block *sb)
1377 security_ops->sb_free_security (sb);
1380 static inline int security_sb_copy_data (struct file_system_type *type,
1381 void *orig, void *copy)
1383 return security_ops->sb_copy_data (type, orig, copy);
1386 static inline int security_sb_kern_mount (struct super_block *sb, void *data)
1388 return security_ops->sb_kern_mount (sb, data);
1391 static inline int security_sb_statfs (struct super_block *sb)
1393 return security_ops->sb_statfs (sb);
1396 static inline int security_sb_mount (char *dev_name, struct nameidata *nd,
1397 char *type, unsigned long flags,
1400 return security_ops->sb_mount (dev_name, nd, type, flags, data);
1403 static inline int security_sb_check_sb (struct vfsmount *mnt,
1404 struct nameidata *nd)
1406 return security_ops->sb_check_sb (mnt, nd);
1409 static inline int security_sb_umount (struct vfsmount *mnt, int flags)
1411 return security_ops->sb_umount (mnt, flags);
1414 static inline void security_sb_umount_close (struct vfsmount *mnt)
1416 security_ops->sb_umount_close (mnt);
1419 static inline void security_sb_umount_busy (struct vfsmount *mnt)
1421 security_ops->sb_umount_busy (mnt);
1424 static inline void security_sb_post_remount (struct vfsmount *mnt,
1425 unsigned long flags, void *data)
1427 security_ops->sb_post_remount (mnt, flags, data);
1430 static inline void security_sb_post_mountroot (void)
1432 security_ops->sb_post_mountroot ();
1435 static inline void security_sb_post_addmount (struct vfsmount *mnt,
1436 struct nameidata *mountpoint_nd)
1438 security_ops->sb_post_addmount (mnt, mountpoint_nd);
1441 static inline int security_sb_pivotroot (struct nameidata *old_nd,
1442 struct nameidata *new_nd)
1444 return security_ops->sb_pivotroot (old_nd, new_nd);
1447 static inline void security_sb_post_pivotroot (struct nameidata *old_nd,
1448 struct nameidata *new_nd)
1450 security_ops->sb_post_pivotroot (old_nd, new_nd);
1453 static inline int security_inode_alloc (struct inode *inode)
1455 if (unlikely (IS_PRIVATE (inode)))
1457 return security_ops->inode_alloc_security (inode);
1460 static inline void security_inode_free (struct inode *inode)
1462 if (unlikely (IS_PRIVATE (inode)))
1464 security_ops->inode_free_security (inode);
1467 static inline int security_inode_init_security (struct inode *inode,
1473 if (unlikely (IS_PRIVATE (inode)))
1475 return security_ops->inode_init_security (inode, dir, name, value, len);
1478 static inline int security_inode_create (struct inode *dir,
1479 struct dentry *dentry,
1482 if (unlikely (IS_PRIVATE (dir)))
1484 return security_ops->inode_create (dir, dentry, mode);
1487 static inline void security_inode_post_create (struct inode *dir,
1488 struct dentry *dentry,
1491 if (dentry->d_inode && unlikely (IS_PRIVATE (dentry->d_inode)))
1493 security_ops->inode_post_create (dir, dentry, mode);
1496 static inline int security_inode_link (struct dentry *old_dentry,
1498 struct dentry *new_dentry)
1500 if (unlikely (IS_PRIVATE (old_dentry->d_inode)))
1502 return security_ops->inode_link (old_dentry, dir, new_dentry);
1505 static inline void security_inode_post_link (struct dentry *old_dentry,
1507 struct dentry *new_dentry)
1509 if (new_dentry->d_inode && unlikely (IS_PRIVATE (new_dentry->d_inode)))
1511 security_ops->inode_post_link (old_dentry, dir, new_dentry);
1514 static inline int security_inode_unlink (struct inode *dir,
1515 struct dentry *dentry)
1517 if (unlikely (IS_PRIVATE (dentry->d_inode)))
1519 return security_ops->inode_unlink (dir, dentry);
1522 static inline int security_inode_symlink (struct inode *dir,
1523 struct dentry *dentry,
1524 const char *old_name)
1526 if (unlikely (IS_PRIVATE (dir)))
1528 return security_ops->inode_symlink (dir, dentry, old_name);
1531 static inline void security_inode_post_symlink (struct inode *dir,
1532 struct dentry *dentry,
1533 const char *old_name)
1535 if (dentry->d_inode && unlikely (IS_PRIVATE (dentry->d_inode)))
1537 security_ops->inode_post_symlink (dir, dentry, old_name);
1540 static inline int security_inode_mkdir (struct inode *dir,
1541 struct dentry *dentry,
1544 if (unlikely (IS_PRIVATE (dir)))
1546 return security_ops->inode_mkdir (dir, dentry, mode);
1549 static inline void security_inode_post_mkdir (struct inode *dir,
1550 struct dentry *dentry,
1553 if (dentry->d_inode && unlikely (IS_PRIVATE (dentry->d_inode)))
1555 security_ops->inode_post_mkdir (dir, dentry, mode);
1558 static inline int security_inode_rmdir (struct inode *dir,
1559 struct dentry *dentry)
1561 if (unlikely (IS_PRIVATE (dentry->d_inode)))
1563 return security_ops->inode_rmdir (dir, dentry);
1566 static inline int security_inode_mknod (struct inode *dir,
1567 struct dentry *dentry,
1568 int mode, dev_t dev)
1570 if (unlikely (IS_PRIVATE (dir)))
1572 return security_ops->inode_mknod (dir, dentry, mode, dev);
1575 static inline void security_inode_post_mknod (struct inode *dir,
1576 struct dentry *dentry,
1577 int mode, dev_t dev)
1579 if (dentry->d_inode && unlikely (IS_PRIVATE (dentry->d_inode)))
1581 security_ops->inode_post_mknod (dir, dentry, mode, dev);
1584 static inline int security_inode_rename (struct inode *old_dir,
1585 struct dentry *old_dentry,
1586 struct inode *new_dir,
1587 struct dentry *new_dentry)
1589 if (unlikely (IS_PRIVATE (old_dentry->d_inode) ||
1590 (new_dentry->d_inode && IS_PRIVATE (new_dentry->d_inode))))
1592 return security_ops->inode_rename (old_dir, old_dentry,
1593 new_dir, new_dentry);
1596 static inline void security_inode_post_rename (struct inode *old_dir,
1597 struct dentry *old_dentry,
1598 struct inode *new_dir,
1599 struct dentry *new_dentry)
1601 if (unlikely (IS_PRIVATE (old_dentry->d_inode) ||
1602 (new_dentry->d_inode && IS_PRIVATE (new_dentry->d_inode))))
1604 security_ops->inode_post_rename (old_dir, old_dentry,
1605 new_dir, new_dentry);
1608 static inline int security_inode_readlink (struct dentry *dentry)
1610 if (unlikely (IS_PRIVATE (dentry->d_inode)))
1612 return security_ops->inode_readlink (dentry);
1615 static inline int security_inode_follow_link (struct dentry *dentry,
1616 struct nameidata *nd)
1618 if (unlikely (IS_PRIVATE (dentry->d_inode)))
1620 return security_ops->inode_follow_link (dentry, nd);
1623 static inline int security_inode_permission (struct inode *inode, int mask,
1624 struct nameidata *nd)
1626 if (unlikely (IS_PRIVATE (inode)))
1628 return security_ops->inode_permission (inode, mask, nd);
1631 static inline int security_inode_setattr (struct dentry *dentry,
1634 if (unlikely (IS_PRIVATE (dentry->d_inode)))
1636 return security_ops->inode_setattr (dentry, attr);
1639 static inline int security_inode_getattr (struct vfsmount *mnt,
1640 struct dentry *dentry)
1642 if (unlikely (IS_PRIVATE (dentry->d_inode)))
1644 return security_ops->inode_getattr (mnt, dentry);
1647 static inline void security_inode_delete (struct inode *inode)
1649 if (unlikely (IS_PRIVATE (inode)))
1651 security_ops->inode_delete (inode);
1654 static inline int security_inode_setxattr (struct dentry *dentry, char *name,
1655 void *value, size_t size, int flags)
1657 if (unlikely (IS_PRIVATE (dentry->d_inode)))
1659 return security_ops->inode_setxattr (dentry, name, value, size, flags);
1662 static inline void security_inode_post_setxattr (struct dentry *dentry, char *name,
1663 void *value, size_t size, int flags)
1665 if (unlikely (IS_PRIVATE (dentry->d_inode)))
1667 security_ops->inode_post_setxattr (dentry, name, value, size, flags);
1670 static inline int security_inode_getxattr (struct dentry *dentry, char *name)
1672 if (unlikely (IS_PRIVATE (dentry->d_inode)))
1674 return security_ops->inode_getxattr (dentry, name);
1677 static inline int security_inode_listxattr (struct dentry *dentry)
1679 if (unlikely (IS_PRIVATE (dentry->d_inode)))
1681 return security_ops->inode_listxattr (dentry);
1684 static inline int security_inode_removexattr (struct dentry *dentry, char *name)
1686 if (unlikely (IS_PRIVATE (dentry->d_inode)))
1688 return security_ops->inode_removexattr (dentry, name);
1691 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void *buffer, size_t size)
1693 if (unlikely (IS_PRIVATE (inode)))
1695 return security_ops->inode_getsecurity(inode, name, buffer, size);
1698 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
1700 if (unlikely (IS_PRIVATE (inode)))
1702 return security_ops->inode_setsecurity(inode, name, value, size, flags);
1705 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
1707 if (unlikely (IS_PRIVATE (inode)))
1709 return security_ops->inode_listsecurity(inode, buffer, buffer_size);
1712 static inline int security_file_permission (struct file *file, int mask)
1714 return security_ops->file_permission (file, mask);
1717 static inline int security_file_alloc (struct file *file)
1719 return security_ops->file_alloc_security (file);
1722 static inline void security_file_free (struct file *file)
1724 security_ops->file_free_security (file);
1727 static inline int security_file_ioctl (struct file *file, unsigned int cmd,
1730 return security_ops->file_ioctl (file, cmd, arg);
1733 static inline int security_file_mmap (struct file *file, unsigned long reqprot,
1735 unsigned long flags)
1737 return security_ops->file_mmap (file, reqprot, prot, flags);
1740 static inline int security_file_mprotect (struct vm_area_struct *vma,
1741 unsigned long reqprot,
1744 return security_ops->file_mprotect (vma, reqprot, prot);
1747 static inline int security_file_lock (struct file *file, unsigned int cmd)
1749 return security_ops->file_lock (file, cmd);
1752 static inline int security_file_fcntl (struct file *file, unsigned int cmd,
1755 return security_ops->file_fcntl (file, cmd, arg);
1758 static inline int security_file_set_fowner (struct file *file)
1760 return security_ops->file_set_fowner (file);
1763 static inline int security_file_send_sigiotask (struct task_struct *tsk,
1764 struct fown_struct *fown,
1767 return security_ops->file_send_sigiotask (tsk, fown, sig);
1770 static inline int security_file_receive (struct file *file)
1772 return security_ops->file_receive (file);
1775 static inline int security_task_create (unsigned long clone_flags)
1777 return security_ops->task_create (clone_flags);
1780 static inline int security_task_alloc (struct task_struct *p)
1782 return security_ops->task_alloc_security (p);
1785 static inline void security_task_free (struct task_struct *p)
1787 security_ops->task_free_security (p);
1790 static inline int security_task_setuid (uid_t id0, uid_t id1, uid_t id2,
1793 return security_ops->task_setuid (id0, id1, id2, flags);
1796 static inline int security_task_post_setuid (uid_t old_ruid, uid_t old_euid,
1797 uid_t old_suid, int flags)
1799 return security_ops->task_post_setuid (old_ruid, old_euid, old_suid, flags);
1802 static inline int security_task_setgid (gid_t id0, gid_t id1, gid_t id2,
1805 return security_ops->task_setgid (id0, id1, id2, flags);
1808 static inline int security_task_setpgid (struct task_struct *p, pid_t pgid)
1810 return security_ops->task_setpgid (p, pgid);
1813 static inline int security_task_getpgid (struct task_struct *p)
1815 return security_ops->task_getpgid (p);
1818 static inline int security_task_getsid (struct task_struct *p)
1820 return security_ops->task_getsid (p);
1823 static inline int security_task_setgroups (struct group_info *group_info)
1825 return security_ops->task_setgroups (group_info);
1828 static inline int security_task_setnice (struct task_struct *p, int nice)
1830 return security_ops->task_setnice (p, nice);
1833 static inline int security_task_setrlimit (unsigned int resource,
1834 struct rlimit *new_rlim)
1836 return security_ops->task_setrlimit (resource, new_rlim);
1839 static inline int security_task_setscheduler (struct task_struct *p,
1841 struct sched_param *lp)
1843 return security_ops->task_setscheduler (p, policy, lp);
1846 static inline int security_task_getscheduler (struct task_struct *p)
1848 return security_ops->task_getscheduler (p);
1851 static inline int security_task_kill (struct task_struct *p,
1852 struct siginfo *info, int sig)
1854 return security_ops->task_kill (p, info, sig);
1857 static inline int security_task_wait (struct task_struct *p)
1859 return security_ops->task_wait (p);
1862 static inline int security_task_prctl (int option, unsigned long arg2,
1867 return security_ops->task_prctl (option, arg2, arg3, arg4, arg5);
1870 static inline void security_task_reparent_to_init (struct task_struct *p)
1872 security_ops->task_reparent_to_init (p);
1875 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
1877 security_ops->task_to_inode(p, inode);
1880 static inline int security_ipc_permission (struct kern_ipc_perm *ipcp,
1883 return security_ops->ipc_permission (ipcp, flag);
1886 static inline int security_msg_msg_alloc (struct msg_msg * msg)
1888 return security_ops->msg_msg_alloc_security (msg);
1891 static inline void security_msg_msg_free (struct msg_msg * msg)
1893 security_ops->msg_msg_free_security(msg);
1896 static inline int security_msg_queue_alloc (struct msg_queue *msq)
1898 return security_ops->msg_queue_alloc_security (msq);
1901 static inline void security_msg_queue_free (struct msg_queue *msq)
1903 security_ops->msg_queue_free_security (msq);
1906 static inline int security_msg_queue_associate (struct msg_queue * msq,
1909 return security_ops->msg_queue_associate (msq, msqflg);
1912 static inline int security_msg_queue_msgctl (struct msg_queue * msq, int cmd)
1914 return security_ops->msg_queue_msgctl (msq, cmd);
1917 static inline int security_msg_queue_msgsnd (struct msg_queue * msq,
1918 struct msg_msg * msg, int msqflg)
1920 return security_ops->msg_queue_msgsnd (msq, msg, msqflg);
1923 static inline int security_msg_queue_msgrcv (struct msg_queue * msq,
1924 struct msg_msg * msg,
1925 struct task_struct * target,
1926 long type, int mode)
1928 return security_ops->msg_queue_msgrcv (msq, msg, target, type, mode);
1931 static inline int security_shm_alloc (struct shmid_kernel *shp)
1933 return security_ops->shm_alloc_security (shp);
1936 static inline void security_shm_free (struct shmid_kernel *shp)
1938 security_ops->shm_free_security (shp);
1941 static inline int security_shm_associate (struct shmid_kernel * shp,
1944 return security_ops->shm_associate(shp, shmflg);
1947 static inline int security_shm_shmctl (struct shmid_kernel * shp, int cmd)
1949 return security_ops->shm_shmctl (shp, cmd);
1952 static inline int security_shm_shmat (struct shmid_kernel * shp,
1953 char __user *shmaddr, int shmflg)
1955 return security_ops->shm_shmat(shp, shmaddr, shmflg);
1958 static inline int security_sem_alloc (struct sem_array *sma)
1960 return security_ops->sem_alloc_security (sma);
1963 static inline void security_sem_free (struct sem_array *sma)
1965 security_ops->sem_free_security (sma);
1968 static inline int security_sem_associate (struct sem_array * sma, int semflg)
1970 return security_ops->sem_associate (sma, semflg);
1973 static inline int security_sem_semctl (struct sem_array * sma, int cmd)
1975 return security_ops->sem_semctl(sma, cmd);
1978 static inline int security_sem_semop (struct sem_array * sma,
1979 struct sembuf * sops, unsigned nsops,
1982 return security_ops->sem_semop(sma, sops, nsops, alter);
1985 static inline void security_d_instantiate (struct dentry *dentry, struct inode *inode)
1987 if (unlikely (inode && IS_PRIVATE (inode)))
1989 security_ops->d_instantiate (dentry, inode);
1992 static inline int security_getprocattr(struct task_struct *p, char *name, void *value, size_t size)
1994 return security_ops->getprocattr(p, name, value, size);
1997 static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
1999 return security_ops->setprocattr(p, name, value, size);
2002 static inline int security_netlink_send(struct sock *sk, struct sk_buff * skb)
2004 return security_ops->netlink_send(sk, skb);
2007 static inline int security_netlink_recv(struct sk_buff * skb)
2009 return security_ops->netlink_recv(skb);
2013 extern int security_init (void);
2014 extern int register_security (struct security_operations *ops);
2015 extern int unregister_security (struct security_operations *ops);
2016 extern int mod_reg_security (const char *name, struct security_operations *ops);
2017 extern int mod_unreg_security (const char *name, struct security_operations *ops);
2020 #else /* CONFIG_SECURITY */
2023 * This is the default capabilities functionality. Most of these functions
2024 * are just stubbed out, but a few must call the proper capable code.
2027 static inline int security_init(void)
2032 static inline int security_ptrace (struct task_struct *parent, struct task_struct * child)
2034 return cap_ptrace (parent, child);
2037 static inline int security_capget (struct task_struct *target,
2038 kernel_cap_t *effective,
2039 kernel_cap_t *inheritable,
2040 kernel_cap_t *permitted)
2042 return cap_capget (target, effective, inheritable, permitted);
2045 static inline int security_capset_check (struct task_struct *target,
2046 kernel_cap_t *effective,
2047 kernel_cap_t *inheritable,
2048 kernel_cap_t *permitted)
2050 return cap_capset_check (target, effective, inheritable, permitted);
2053 static inline void security_capset_set (struct task_struct *target,
2054 kernel_cap_t *effective,
2055 kernel_cap_t *inheritable,
2056 kernel_cap_t *permitted)
2058 cap_capset_set (target, effective, inheritable, permitted);
2061 static inline int security_acct (struct file *file)
2066 static inline int security_sysctl(struct ctl_table *table, int op)
2071 static inline int security_quotactl (int cmds, int type, int id,
2072 struct super_block * sb)
2077 static inline int security_quota_on (struct dentry * dentry)
2082 static inline int security_syslog(int type)
2084 return cap_syslog(type);
2087 static inline int security_settime(struct timespec *ts, struct timezone *tz)
2089 return cap_settime(ts, tz);
2092 static inline int security_vm_enough_memory(long pages)
2094 return cap_vm_enough_memory(pages);
2097 static inline int security_bprm_alloc (struct linux_binprm *bprm)
2102 static inline void security_bprm_free (struct linux_binprm *bprm)
2105 static inline void security_bprm_apply_creds (struct linux_binprm *bprm, int unsafe)
2107 cap_bprm_apply_creds (bprm, unsafe);
2110 static inline void security_bprm_post_apply_creds (struct linux_binprm *bprm)
2115 static inline int security_bprm_set (struct linux_binprm *bprm)
2117 return cap_bprm_set_security (bprm);
2120 static inline int security_bprm_check (struct linux_binprm *bprm)
2125 static inline int security_bprm_secureexec (struct linux_binprm *bprm)
2127 return cap_bprm_secureexec(bprm);
2130 static inline int security_sb_alloc (struct super_block *sb)
2135 static inline void security_sb_free (struct super_block *sb)
2138 static inline int security_sb_copy_data (struct file_system_type *type,
2139 void *orig, void *copy)
2144 static inline int security_sb_kern_mount (struct super_block *sb, void *data)
2149 static inline int security_sb_statfs (struct super_block *sb)
2154 static inline int security_sb_mount (char *dev_name, struct nameidata *nd,
2155 char *type, unsigned long flags,
2161 static inline int security_sb_check_sb (struct vfsmount *mnt,
2162 struct nameidata *nd)
2167 static inline int security_sb_umount (struct vfsmount *mnt, int flags)
2172 static inline void security_sb_umount_close (struct vfsmount *mnt)
2175 static inline void security_sb_umount_busy (struct vfsmount *mnt)
2178 static inline void security_sb_post_remount (struct vfsmount *mnt,
2179 unsigned long flags, void *data)
2182 static inline void security_sb_post_mountroot (void)
2185 static inline void security_sb_post_addmount (struct vfsmount *mnt,
2186 struct nameidata *mountpoint_nd)
2189 static inline int security_sb_pivotroot (struct nameidata *old_nd,
2190 struct nameidata *new_nd)
2195 static inline void security_sb_post_pivotroot (struct nameidata *old_nd,
2196 struct nameidata *new_nd)
2199 static inline int security_inode_alloc (struct inode *inode)
2204 static inline void security_inode_free (struct inode *inode)
2207 static inline int security_inode_init_security (struct inode *inode,
2216 static inline int security_inode_create (struct inode *dir,
2217 struct dentry *dentry,
2223 static inline void security_inode_post_create (struct inode *dir,
2224 struct dentry *dentry,
2228 static inline int security_inode_link (struct dentry *old_dentry,
2230 struct dentry *new_dentry)
2235 static inline void security_inode_post_link (struct dentry *old_dentry,
2237 struct dentry *new_dentry)
2240 static inline int security_inode_unlink (struct inode *dir,
2241 struct dentry *dentry)
2246 static inline int security_inode_symlink (struct inode *dir,
2247 struct dentry *dentry,
2248 const char *old_name)
2253 static inline void security_inode_post_symlink (struct inode *dir,
2254 struct dentry *dentry,
2255 const char *old_name)
2258 static inline int security_inode_mkdir (struct inode *dir,
2259 struct dentry *dentry,
2265 static inline void security_inode_post_mkdir (struct inode *dir,
2266 struct dentry *dentry,
2270 static inline int security_inode_rmdir (struct inode *dir,
2271 struct dentry *dentry)
2276 static inline int security_inode_mknod (struct inode *dir,
2277 struct dentry *dentry,
2278 int mode, dev_t dev)
2283 static inline void security_inode_post_mknod (struct inode *dir,
2284 struct dentry *dentry,
2285 int mode, dev_t dev)
2288 static inline int security_inode_rename (struct inode *old_dir,
2289 struct dentry *old_dentry,
2290 struct inode *new_dir,
2291 struct dentry *new_dentry)
2296 static inline void security_inode_post_rename (struct inode *old_dir,
2297 struct dentry *old_dentry,
2298 struct inode *new_dir,
2299 struct dentry *new_dentry)
2302 static inline int security_inode_readlink (struct dentry *dentry)
2307 static inline int security_inode_follow_link (struct dentry *dentry,
2308 struct nameidata *nd)
2313 static inline int security_inode_permission (struct inode *inode, int mask,
2314 struct nameidata *nd)
2319 static inline int security_inode_setattr (struct dentry *dentry,
2325 static inline int security_inode_getattr (struct vfsmount *mnt,
2326 struct dentry *dentry)
2331 static inline void security_inode_delete (struct inode *inode)
2334 static inline int security_inode_setxattr (struct dentry *dentry, char *name,
2335 void *value, size_t size, int flags)
2337 return cap_inode_setxattr(dentry, name, value, size, flags);
2340 static inline void security_inode_post_setxattr (struct dentry *dentry, char *name,
2341 void *value, size_t size, int flags)
2344 static inline int security_inode_getxattr (struct dentry *dentry, char *name)
2349 static inline int security_inode_listxattr (struct dentry *dentry)
2354 static inline int security_inode_removexattr (struct dentry *dentry, char *name)
2356 return cap_inode_removexattr(dentry, name);
2359 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void *buffer, size_t size)
2364 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
2369 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
2374 static inline int security_file_permission (struct file *file, int mask)
2379 static inline int security_file_alloc (struct file *file)
2384 static inline void security_file_free (struct file *file)
2387 static inline int security_file_ioctl (struct file *file, unsigned int cmd,
2393 static inline int security_file_mmap (struct file *file, unsigned long reqprot,
2395 unsigned long flags)
2400 static inline int security_file_mprotect (struct vm_area_struct *vma,
2401 unsigned long reqprot,
2407 static inline int security_file_lock (struct file *file, unsigned int cmd)
2412 static inline int security_file_fcntl (struct file *file, unsigned int cmd,
2418 static inline int security_file_set_fowner (struct file *file)
2423 static inline int security_file_send_sigiotask (struct task_struct *tsk,
2424 struct fown_struct *fown,
2430 static inline int security_file_receive (struct file *file)
2435 static inline int security_task_create (unsigned long clone_flags)
2440 static inline int security_task_alloc (struct task_struct *p)
2445 static inline void security_task_free (struct task_struct *p)
2448 static inline int security_task_setuid (uid_t id0, uid_t id1, uid_t id2,
2454 static inline int security_task_post_setuid (uid_t old_ruid, uid_t old_euid,
2455 uid_t old_suid, int flags)
2457 return cap_task_post_setuid (old_ruid, old_euid, old_suid, flags);
2460 static inline int security_task_setgid (gid_t id0, gid_t id1, gid_t id2,
2466 static inline int security_task_setpgid (struct task_struct *p, pid_t pgid)
2471 static inline int security_task_getpgid (struct task_struct *p)
2476 static inline int security_task_getsid (struct task_struct *p)
2481 static inline int security_task_setgroups (struct group_info *group_info)
2486 static inline int security_task_setnice (struct task_struct *p, int nice)
2491 static inline int security_task_setrlimit (unsigned int resource,
2492 struct rlimit *new_rlim)
2497 static inline int security_task_setscheduler (struct task_struct *p,
2499 struct sched_param *lp)
2504 static inline int security_task_getscheduler (struct task_struct *p)
2509 static inline int security_task_kill (struct task_struct *p,
2510 struct siginfo *info, int sig)
2515 static inline int security_task_wait (struct task_struct *p)
2520 static inline int security_task_prctl (int option, unsigned long arg2,
2528 static inline void security_task_reparent_to_init (struct task_struct *p)
2530 cap_task_reparent_to_init (p);
2533 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
2536 static inline int security_ipc_permission (struct kern_ipc_perm *ipcp,
2542 static inline int security_msg_msg_alloc (struct msg_msg * msg)
2547 static inline void security_msg_msg_free (struct msg_msg * msg)
2550 static inline int security_msg_queue_alloc (struct msg_queue *msq)
2555 static inline void security_msg_queue_free (struct msg_queue *msq)
2558 static inline int security_msg_queue_associate (struct msg_queue * msq,
2564 static inline int security_msg_queue_msgctl (struct msg_queue * msq, int cmd)
2569 static inline int security_msg_queue_msgsnd (struct msg_queue * msq,
2570 struct msg_msg * msg, int msqflg)
2575 static inline int security_msg_queue_msgrcv (struct msg_queue * msq,
2576 struct msg_msg * msg,
2577 struct task_struct * target,
2578 long type, int mode)
2583 static inline int security_shm_alloc (struct shmid_kernel *shp)
2588 static inline void security_shm_free (struct shmid_kernel *shp)
2591 static inline int security_shm_associate (struct shmid_kernel * shp,
2597 static inline int security_shm_shmctl (struct shmid_kernel * shp, int cmd)
2602 static inline int security_shm_shmat (struct shmid_kernel * shp,
2603 char __user *shmaddr, int shmflg)
2608 static inline int security_sem_alloc (struct sem_array *sma)
2613 static inline void security_sem_free (struct sem_array *sma)
2616 static inline int security_sem_associate (struct sem_array * sma, int semflg)
2621 static inline int security_sem_semctl (struct sem_array * sma, int cmd)
2626 static inline int security_sem_semop (struct sem_array * sma,
2627 struct sembuf * sops, unsigned nsops,
2633 static inline void security_d_instantiate (struct dentry *dentry, struct inode *inode)
2636 static inline int security_getprocattr(struct task_struct *p, char *name, void *value, size_t size)
2641 static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2646 static inline int security_netlink_send (struct sock *sk, struct sk_buff *skb)
2648 return cap_netlink_send (sk, skb);
2651 static inline int security_netlink_recv (struct sk_buff *skb)
2653 return cap_netlink_recv (skb);
2656 #endif /* CONFIG_SECURITY */
2658 #ifdef CONFIG_SECURITY_NETWORK
2659 static inline int security_unix_stream_connect(struct socket * sock,
2660 struct socket * other,
2661 struct sock * newsk)
2663 return security_ops->unix_stream_connect(sock, other, newsk);
2667 static inline int security_unix_may_send(struct socket * sock,
2668 struct socket * other)
2670 return security_ops->unix_may_send(sock, other);
2673 static inline int security_socket_create (int family, int type,
2674 int protocol, int kern)
2676 return security_ops->socket_create(family, type, protocol, kern);
2679 static inline void security_socket_post_create(struct socket * sock,
2682 int protocol, int kern)
2684 security_ops->socket_post_create(sock, family, type,
2688 static inline int security_socket_bind(struct socket * sock,
2689 struct sockaddr * address,
2692 return security_ops->socket_bind(sock, address, addrlen);
2695 static inline int security_socket_connect(struct socket * sock,
2696 struct sockaddr * address,
2699 return security_ops->socket_connect(sock, address, addrlen);
2702 static inline int security_socket_listen(struct socket * sock, int backlog)
2704 return security_ops->socket_listen(sock, backlog);
2707 static inline int security_socket_accept(struct socket * sock,
2708 struct socket * newsock)
2710 return security_ops->socket_accept(sock, newsock);
2713 static inline void security_socket_post_accept(struct socket * sock,
2714 struct socket * newsock)
2716 security_ops->socket_post_accept(sock, newsock);
2719 static inline int security_socket_sendmsg(struct socket * sock,
2720 struct msghdr * msg, int size)
2722 return security_ops->socket_sendmsg(sock, msg, size);
2725 static inline int security_socket_recvmsg(struct socket * sock,
2726 struct msghdr * msg, int size,
2729 return security_ops->socket_recvmsg(sock, msg, size, flags);
2732 static inline int security_socket_getsockname(struct socket * sock)
2734 return security_ops->socket_getsockname(sock);
2737 static inline int security_socket_getpeername(struct socket * sock)
2739 return security_ops->socket_getpeername(sock);
2742 static inline int security_socket_getsockopt(struct socket * sock,
2743 int level, int optname)
2745 return security_ops->socket_getsockopt(sock, level, optname);
2748 static inline int security_socket_setsockopt(struct socket * sock,
2749 int level, int optname)
2751 return security_ops->socket_setsockopt(sock, level, optname);
2754 static inline int security_socket_shutdown(struct socket * sock, int how)
2756 return security_ops->socket_shutdown(sock, how);
2759 static inline int security_sock_rcv_skb (struct sock * sk,
2760 struct sk_buff * skb)
2762 return security_ops->socket_sock_rcv_skb (sk, skb);
2765 static inline int security_socket_getpeersec(struct socket *sock, char __user *optval,
2766 int __user *optlen, unsigned len)
2768 return security_ops->socket_getpeersec(sock, optval, optlen, len);
2771 static inline int security_sk_alloc(struct sock *sk, int family,
2772 unsigned int __nocast priority)
2774 return security_ops->sk_alloc_security(sk, family, priority);
2777 static inline void security_sk_free(struct sock *sk)
2779 return security_ops->sk_free_security(sk);
2781 #else /* CONFIG_SECURITY_NETWORK */
2782 static inline int security_unix_stream_connect(struct socket * sock,
2783 struct socket * other,
2784 struct sock * newsk)
2789 static inline int security_unix_may_send(struct socket * sock,
2790 struct socket * other)
2795 static inline int security_socket_create (int family, int type,
2796 int protocol, int kern)
2801 static inline void security_socket_post_create(struct socket * sock,
2804 int protocol, int kern)
2808 static inline int security_socket_bind(struct socket * sock,
2809 struct sockaddr * address,
2815 static inline int security_socket_connect(struct socket * sock,
2816 struct sockaddr * address,
2822 static inline int security_socket_listen(struct socket * sock, int backlog)
2827 static inline int security_socket_accept(struct socket * sock,
2828 struct socket * newsock)
2833 static inline void security_socket_post_accept(struct socket * sock,
2834 struct socket * newsock)
2838 static inline int security_socket_sendmsg(struct socket * sock,
2839 struct msghdr * msg, int size)
2844 static inline int security_socket_recvmsg(struct socket * sock,
2845 struct msghdr * msg, int size,
2851 static inline int security_socket_getsockname(struct socket * sock)
2856 static inline int security_socket_getpeername(struct socket * sock)
2861 static inline int security_socket_getsockopt(struct socket * sock,
2862 int level, int optname)
2867 static inline int security_socket_setsockopt(struct socket * sock,
2868 int level, int optname)
2873 static inline int security_socket_shutdown(struct socket * sock, int how)
2877 static inline int security_sock_rcv_skb (struct sock * sk,
2878 struct sk_buff * skb)
2883 static inline int security_socket_getpeersec(struct socket *sock, char __user *optval,
2884 int __user *optlen, unsigned len)
2886 return -ENOPROTOOPT;
2889 static inline int security_sk_alloc(struct sock *sk, int family,
2890 unsigned int __nocast priority)
2895 static inline void security_sk_free(struct sock *sk)
2898 #endif /* CONFIG_SECURITY_NETWORK */
2900 #endif /* ! __LINUX_SECURITY_H */