4 * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
5 * Copyright (C) 2001 Greg Kroah-Hartman <greg@kroah.com>
6 * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
7 * Copyright (C) 2001 James Morris <jmorris@intercode.com.au>
8 * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group)
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * Due to this file being licensed under the GPL there is controversy over
16 * whether this permits you to write a module that #includes this file
17 * without placing your module under the GPL. Please consult a lawyer for
18 * advice before doing this.
22 #ifndef __LINUX_SECURITY_H
23 #define __LINUX_SECURITY_H
26 #include <linux/binfmts.h>
27 #include <linux/signal.h>
28 #include <linux/resource.h>
29 #include <linux/sem.h>
30 #include <linux/shm.h>
31 #include <linux/mm.h> /* PAGE_ALIGN */
32 #include <linux/msg.h>
33 #include <linux/sched.h>
34 #include <linux/key.h>
35 #include <linux/xfrm.h>
36 #include <linux/slab.h>
39 /* Maximum number of letters for an LSM name string */
40 #define SECURITY_NAME_MAX 10
42 /* If capable should audit the security request */
43 #define SECURITY_CAP_NOAUDIT 0
44 #define SECURITY_CAP_AUDIT 1
50 * These functions are in security/capability.c and are used
51 * as the default capabilities functions
53 extern int cap_capable(struct task_struct *tsk, const struct cred *cred,
55 extern int cap_settime(struct timespec *ts, struct timezone *tz);
56 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
57 extern int cap_ptrace_traceme(struct task_struct *parent);
58 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
59 extern int cap_capset(struct cred *new, const struct cred *old,
60 const kernel_cap_t *effective,
61 const kernel_cap_t *inheritable,
62 const kernel_cap_t *permitted);
63 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
64 extern int cap_bprm_secureexec(struct linux_binprm *bprm);
65 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
66 const void *value, size_t size, int flags);
67 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
68 extern int cap_inode_need_killpriv(struct dentry *dentry);
69 extern int cap_inode_killpriv(struct dentry *dentry);
70 extern int cap_file_mmap(struct file *file, unsigned long reqprot,
71 unsigned long prot, unsigned long flags,
72 unsigned long addr, unsigned long addr_only);
73 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
74 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
75 unsigned long arg4, unsigned long arg5);
76 extern int cap_task_setscheduler(struct task_struct *p, int policy, struct sched_param *lp);
77 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
78 extern int cap_task_setnice(struct task_struct *p, int nice);
79 extern int cap_syslog(int type, bool from_file);
80 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
92 struct xfrm_user_sec_ctx;
95 extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
96 extern int cap_netlink_recv(struct sk_buff *skb, int cap);
98 void reset_security_ops(void);
101 extern unsigned long mmap_min_addr;
102 extern unsigned long dac_mmap_min_addr;
104 #define dac_mmap_min_addr 0UL
108 * Values used in the task_security_ops calls
110 /* setuid or setgid, id0 == uid or gid */
111 #define LSM_SETID_ID 1
113 /* setreuid or setregid, id0 == real, id1 == eff */
114 #define LSM_SETID_RE 2
116 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
117 #define LSM_SETID_RES 4
119 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
120 #define LSM_SETID_FS 8
122 /* forward declares to avoid warnings */
126 /* bprm->unsafe reasons */
127 #define LSM_UNSAFE_SHARE 1
128 #define LSM_UNSAFE_PTRACE 2
129 #define LSM_UNSAFE_PTRACE_CAP 4
133 * If a hint addr is less than mmap_min_addr change hint to be as
134 * low as possible but still greater than mmap_min_addr
136 static inline unsigned long round_hint_to_min(unsigned long hint)
139 if (((void *)hint != NULL) &&
140 (hint < mmap_min_addr))
141 return PAGE_ALIGN(mmap_min_addr);
144 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
145 void __user *buffer, size_t *lenp, loff_t *ppos);
148 #ifdef CONFIG_SECURITY
150 struct security_mnt_opts {
156 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
158 opts->mnt_opts = NULL;
159 opts->mnt_opts_flags = NULL;
160 opts->num_mnt_opts = 0;
163 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
167 for (i = 0; i < opts->num_mnt_opts; i++)
168 kfree(opts->mnt_opts[i]);
169 kfree(opts->mnt_opts);
170 opts->mnt_opts = NULL;
171 kfree(opts->mnt_opts_flags);
172 opts->mnt_opts_flags = NULL;
173 opts->num_mnt_opts = 0;
177 * struct security_operations - main security structure
179 * Security module identifier.
182 * A string that acts as a unique identifeir for the LSM with max number
183 * of characters = SECURITY_NAME_MAX.
185 * Security hooks for program execution operations.
188 * Save security information in the bprm->security field, typically based
189 * on information about the bprm->file, for later use by the apply_creds
190 * hook. This hook may also optionally check permissions (e.g. for
191 * transitions between security domains).
192 * This hook may be called multiple times during a single execve, e.g. for
193 * interpreters. The hook can tell whether it has already been called by
194 * checking to see if @bprm->security is non-NULL. If so, then the hook
195 * may decide either to retain the security information saved earlier or
197 * @bprm contains the linux_binprm structure.
198 * Return 0 if the hook is successful and permission is granted.
199 * @bprm_check_security:
200 * This hook mediates the point when a search for a binary handler will
201 * begin. It allows a check the @bprm->security value which is set in the
202 * preceding set_creds call. The primary difference from set_creds is
203 * that the argv list and envp list are reliably available in @bprm. This
204 * hook may be called multiple times during a single execve; and in each
205 * pass set_creds is called first.
206 * @bprm contains the linux_binprm structure.
207 * Return 0 if the hook is successful and permission is granted.
208 * @bprm_committing_creds:
209 * Prepare to install the new security attributes of a process being
210 * transformed by an execve operation, based on the old credentials
211 * pointed to by @current->cred and the information set in @bprm->cred by
212 * the bprm_set_creds hook. @bprm points to the linux_binprm structure.
213 * This hook is a good place to perform state changes on the process such
214 * as closing open file descriptors to which access will no longer be
215 * granted when the attributes are changed. This is called immediately
216 * before commit_creds().
217 * @bprm_committed_creds:
218 * Tidy up after the installation of the new security attributes of a
219 * process being transformed by an execve operation. The new credentials
220 * have, by this point, been set to @current->cred. @bprm points to the
221 * linux_binprm structure. This hook is a good place to perform state
222 * changes on the process such as clearing out non-inheritable signal
223 * state. This is called immediately after commit_creds().
225 * Return a boolean value (0 or 1) indicating whether a "secure exec"
226 * is required. The flag is passed in the auxiliary table
227 * on the initial stack to the ELF interpreter to indicate whether libc
228 * should enable secure mode.
229 * @bprm contains the linux_binprm structure.
231 * Security hooks for filesystem operations.
233 * @sb_alloc_security:
234 * Allocate and attach a security structure to the sb->s_security field.
235 * The s_security field is initialized to NULL when the structure is
237 * @sb contains the super_block structure to be modified.
238 * Return 0 if operation was successful.
240 * Deallocate and clear the sb->s_security field.
241 * @sb contains the super_block structure to be modified.
243 * Check permission before obtaining filesystem statistics for the @mnt
245 * @dentry is a handle on the superblock for the filesystem.
246 * Return 0 if permission is granted.
248 * Check permission before an object specified by @dev_name is mounted on
249 * the mount point named by @nd. For an ordinary mount, @dev_name
250 * identifies a device if the file system type requires a device. For a
251 * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a
252 * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
253 * pathname of the object being mounted.
254 * @dev_name contains the name for object being mounted.
255 * @path contains the path for mount point object.
256 * @type contains the filesystem type.
257 * @flags contains the mount flags.
258 * @data contains the filesystem-specific data.
259 * Return 0 if permission is granted.
261 * Allow mount option data to be copied prior to parsing by the filesystem,
262 * so that the security module can extract security-specific mount
263 * options cleanly (a filesystem may modify the data e.g. with strsep()).
264 * This also allows the original mount data to be stripped of security-
265 * specific options to avoid having to make filesystems aware of them.
266 * @type the type of filesystem being mounted.
267 * @orig the original mount data copied from userspace.
268 * @copy copied data which will be passed to the security module.
269 * Returns 0 if the copy was successful.
271 * Check permission before the device with superblock @mnt->sb is mounted
272 * on the mount point named by @nd.
273 * @mnt contains the vfsmount for device being mounted.
274 * @path contains the path for the mount point.
275 * Return 0 if permission is granted.
277 * Check permission before the @mnt file system is unmounted.
278 * @mnt contains the mounted file system.
279 * @flags contains the unmount flags, e.g. MNT_FORCE.
280 * Return 0 if permission is granted.
282 * Close any files in the @mnt mounted filesystem that are held open by
283 * the security module. This hook is called during an umount operation
284 * prior to checking whether the filesystem is still busy.
285 * @mnt contains the mounted filesystem.
287 * Handle a failed umount of the @mnt mounted filesystem, e.g. re-opening
288 * any files that were closed by umount_close. This hook is called during
289 * an umount operation if the umount fails after a call to the
291 * @mnt contains the mounted filesystem.
293 * Update the security module's state when a filesystem is remounted.
294 * This hook is only called if the remount was successful.
295 * @mnt contains the mounted file system.
296 * @flags contains the new filesystem flags.
297 * @data contains the filesystem-specific data.
299 * Update the security module's state when a filesystem is mounted.
300 * This hook is called any time a mount is successfully grafetd to
302 * @mnt contains the mounted filesystem.
303 * @mountpoint contains the path for the mount point.
305 * Check permission before pivoting the root filesystem.
306 * @old_path contains the path for the new location of the current root (put_old).
307 * @new_path contains the path for the new root (new_root).
308 * Return 0 if permission is granted.
309 * @sb_post_pivotroot:
310 * Update module state after a successful pivot.
311 * @old_path contains the path for the old root.
312 * @new_path contains the path for the new root.
314 * Set the security relevant mount options used for a superblock
315 * @sb the superblock to set security mount options for
316 * @opts binary data structure containing all lsm mount data
317 * @sb_clone_mnt_opts:
318 * Copy all security options from a given superblock to another
319 * @oldsb old superblock which contain information to clone
320 * @newsb new superblock which needs filled in
321 * @sb_parse_opts_str:
322 * Parse a string of security data filling in the opts structure
323 * @options string containing all mount options known by the LSM
324 * @opts binary data structure usable by the LSM
326 * Security hooks for inode operations.
328 * @inode_alloc_security:
329 * Allocate and attach a security structure to @inode->i_security. The
330 * i_security field is initialized to NULL when the inode structure is
332 * @inode contains the inode structure.
333 * Return 0 if operation was successful.
334 * @inode_free_security:
335 * @inode contains the inode structure.
336 * Deallocate the inode security structure and set @inode->i_security to
338 * @inode_init_security:
339 * Obtain the security attribute name suffix and value to set on a newly
340 * created inode and set up the incore security field for the new inode.
341 * This hook is called by the fs code as part of the inode creation
342 * transaction and provides for atomic labeling of the inode, unlike
343 * the post_create/mkdir/... hooks called by the VFS. The hook function
344 * is expected to allocate the name and value via kmalloc, with the caller
345 * being responsible for calling kfree after using them.
346 * If the security module does not use security attributes or does
347 * not wish to put a security attribute on this particular inode,
348 * then it should return -EOPNOTSUPP to skip this processing.
349 * @inode contains the inode structure of the newly created inode.
350 * @dir contains the inode structure of the parent directory.
351 * @name will be set to the allocated name suffix (e.g. selinux).
352 * @value will be set to the allocated attribute value.
353 * @len will be set to the length of the value.
354 * Returns 0 if @name and @value have been successfully set,
355 * -EOPNOTSUPP if no security attribute is needed, or
356 * -ENOMEM on memory allocation failure.
358 * Check permission to create a regular file.
359 * @dir contains inode structure of the parent of the new file.
360 * @dentry contains the dentry structure for the file to be created.
361 * @mode contains the file mode of the file to be created.
362 * Return 0 if permission is granted.
364 * Check permission before creating a new hard link to a file.
365 * @old_dentry contains the dentry structure for an existing link to the file.
366 * @dir contains the inode structure of the parent directory of the new link.
367 * @new_dentry contains the dentry structure for the new link.
368 * Return 0 if permission is granted.
370 * Check permission before creating a new hard link to a file.
371 * @old_dentry contains the dentry structure for an existing link
373 * @new_dir contains the path structure of the parent directory of
375 * @new_dentry contains the dentry structure for the new link.
376 * Return 0 if permission is granted.
378 * Check the permission to remove a hard link to a file.
379 * @dir contains the inode structure of parent directory of the file.
380 * @dentry contains the dentry structure for file to be unlinked.
381 * Return 0 if permission is granted.
383 * Check the permission to remove a hard link to a file.
384 * @dir contains the path structure of parent directory of the file.
385 * @dentry contains the dentry structure for file to be unlinked.
386 * Return 0 if permission is granted.
388 * Check the permission to create a symbolic link to a file.
389 * @dir contains the inode structure of parent directory of the symbolic link.
390 * @dentry contains the dentry structure of the symbolic link.
391 * @old_name contains the pathname of file.
392 * Return 0 if permission is granted.
394 * Check the permission to create a symbolic link to a file.
395 * @dir contains the path structure of parent directory of
397 * @dentry contains the dentry structure of the symbolic link.
398 * @old_name contains the pathname of file.
399 * Return 0 if permission is granted.
401 * Check permissions to create a new directory in the existing directory
402 * associated with inode strcture @dir.
403 * @dir containst the inode structure of parent of the directory to be created.
404 * @dentry contains the dentry structure of new directory.
405 * @mode contains the mode of new directory.
406 * Return 0 if permission is granted.
408 * Check permissions to create a new directory in the existing directory
409 * associated with path strcture @path.
410 * @dir containst the path structure of parent of the directory
412 * @dentry contains the dentry structure of new directory.
413 * @mode contains the mode of new directory.
414 * Return 0 if permission is granted.
416 * Check the permission to remove a directory.
417 * @dir contains the inode structure of parent of the directory to be removed.
418 * @dentry contains the dentry structure of directory to be removed.
419 * Return 0 if permission is granted.
421 * Check the permission to remove a directory.
422 * @dir contains the path structure of parent of the directory to be
424 * @dentry contains the dentry structure of directory to be removed.
425 * Return 0 if permission is granted.
427 * Check permissions when creating a special file (or a socket or a fifo
428 * file created via the mknod system call). Note that if mknod operation
429 * is being done for a regular file, then the create hook will be called
431 * @dir contains the inode structure of parent of the new file.
432 * @dentry contains the dentry structure of the new file.
433 * @mode contains the mode of the new file.
434 * @dev contains the device number.
435 * Return 0 if permission is granted.
437 * Check permissions when creating a file. Note that this hook is called
438 * even if mknod operation is being done for a regular file.
439 * @dir contains the path structure of parent of the new file.
440 * @dentry contains the dentry structure of the new file.
441 * @mode contains the mode of the new file.
442 * @dev contains the undecoded device number. Use new_decode_dev() to get
443 * the decoded device number.
444 * Return 0 if permission is granted.
446 * Check for permission to rename a file or directory.
447 * @old_dir contains the inode structure for parent of the old link.
448 * @old_dentry contains the dentry structure of the old link.
449 * @new_dir contains the inode structure for parent of the new link.
450 * @new_dentry contains the dentry structure of the new link.
451 * Return 0 if permission is granted.
453 * Check for permission to rename a file or directory.
454 * @old_dir contains the path structure for parent of the old link.
455 * @old_dentry contains the dentry structure of the old link.
456 * @new_dir contains the path structure for parent of the new link.
457 * @new_dentry contains the dentry structure of the new link.
458 * Return 0 if permission is granted.
460 * Check for permission to change DAC's permission of a file or directory.
461 * @dentry contains the dentry structure.
462 * @mnt contains the vfsmnt structure.
463 * @mode contains DAC's mode.
464 * Return 0 if permission is granted.
466 * Check for permission to change owner/group of a file or directory.
467 * @path contains the path structure.
468 * @uid contains new owner's ID.
469 * @gid contains new group's ID.
470 * Return 0 if permission is granted.
472 * Check for permission to change root directory.
473 * @path contains the path structure.
474 * Return 0 if permission is granted.
476 * Check the permission to read the symbolic link.
477 * @dentry contains the dentry structure for the file link.
478 * Return 0 if permission is granted.
479 * @inode_follow_link:
480 * Check permission to follow a symbolic link when looking up a pathname.
481 * @dentry contains the dentry structure for the link.
482 * @nd contains the nameidata structure for the parent directory.
483 * Return 0 if permission is granted.
485 * Check permission before accessing an inode. This hook is called by the
486 * existing Linux permission function, so a security module can use it to
487 * provide additional checking for existing Linux permission checks.
488 * Notice that this hook is called when a file is opened (as well as many
489 * other operations), whereas the file_security_ops permission hook is
490 * called when the actual read/write operations are performed.
491 * @inode contains the inode structure to check.
492 * @mask contains the permission mask.
493 * @nd contains the nameidata (may be NULL).
494 * Return 0 if permission is granted.
496 * Check permission before setting file attributes. Note that the kernel
497 * call to notify_change is performed from several locations, whenever
498 * file attributes change (such as when a file is truncated, chown/chmod
499 * operations, transferring disk quotas, etc).
500 * @dentry contains the dentry structure for the file.
501 * @attr is the iattr structure containing the new file attributes.
502 * Return 0 if permission is granted.
504 * Check permission before truncating a file.
505 * @path contains the path structure for the file.
506 * @length is the new length of the file.
507 * @time_attrs is the flags passed to do_truncate().
508 * Return 0 if permission is granted.
510 * Check permission before obtaining file attributes.
511 * @mnt is the vfsmount where the dentry was looked up
512 * @dentry contains the dentry structure for the file.
513 * Return 0 if permission is granted.
515 * @inode contains the inode structure for deleted inode.
516 * This hook is called when a deleted inode is released (i.e. an inode
517 * with no hard links has its use count drop to zero). A security module
518 * can use this hook to release any persistent label associated with the
521 * Check permission before setting the extended attributes
522 * @value identified by @name for @dentry.
523 * Return 0 if permission is granted.
524 * @inode_post_setxattr:
525 * Update inode security field after successful setxattr operation.
526 * @value identified by @name for @dentry.
528 * Check permission before obtaining the extended attributes
529 * identified by @name for @dentry.
530 * Return 0 if permission is granted.
532 * Check permission before obtaining the list of extended attribute
534 * Return 0 if permission is granted.
535 * @inode_removexattr:
536 * Check permission before removing the extended attribute
537 * identified by @name for @dentry.
538 * Return 0 if permission is granted.
539 * @inode_getsecurity:
540 * Retrieve a copy of the extended attribute representation of the
541 * security label associated with @name for @inode via @buffer. Note that
542 * @name is the remainder of the attribute name after the security prefix
543 * has been removed. @alloc is used to specify of the call should return a
544 * value via the buffer or just the value length Return size of buffer on
546 * @inode_setsecurity:
547 * Set the security label associated with @name for @inode from the
548 * extended attribute value @value. @size indicates the size of the
549 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
550 * Note that @name is the remainder of the attribute name after the
551 * security. prefix has been removed.
552 * Return 0 on success.
553 * @inode_listsecurity:
554 * Copy the extended attribute names for the security labels
555 * associated with @inode into @buffer. The maximum size of @buffer
556 * is specified by @buffer_size. @buffer may be NULL to request
557 * the size of the buffer required.
558 * Returns number of bytes used/required on success.
559 * @inode_need_killpriv:
560 * Called when an inode has been changed.
561 * @dentry is the dentry being changed.
562 * Return <0 on error to abort the inode change operation.
563 * Return 0 if inode_killpriv does not need to be called.
564 * Return >0 if inode_killpriv does need to be called.
566 * The setuid bit is being removed. Remove similar security labels.
567 * Called with the dentry->d_inode->i_mutex held.
568 * @dentry is the dentry being changed.
569 * Return 0 on success. If error is returned, then the operation
570 * causing setuid bit removal is failed.
572 * Get the secid associated with the node.
573 * @inode contains a pointer to the inode.
574 * @secid contains a pointer to the location where result will be saved.
575 * In case of failure, @secid will be set to zero.
577 * Security hooks for file operations
580 * Check file permissions before accessing an open file. This hook is
581 * called by various operations that read or write files. A security
582 * module can use this hook to perform additional checking on these
583 * operations, e.g. to revalidate permissions on use to support privilege
584 * bracketing or policy changes. Notice that this hook is used when the
585 * actual read/write operations are performed, whereas the
586 * inode_security_ops hook is called when a file is opened (as well as
587 * many other operations).
588 * Caveat: Although this hook can be used to revalidate permissions for
589 * various system call operations that read or write files, it does not
590 * address the revalidation of permissions for memory-mapped files.
591 * Security modules must handle this separately if they need such
593 * @file contains the file structure being accessed.
594 * @mask contains the requested permissions.
595 * Return 0 if permission is granted.
596 * @file_alloc_security:
597 * Allocate and attach a security structure to the file->f_security field.
598 * The security field is initialized to NULL when the structure is first
600 * @file contains the file structure to secure.
601 * Return 0 if the hook is successful and permission is granted.
602 * @file_free_security:
603 * Deallocate and free any security structures stored in file->f_security.
604 * @file contains the file structure being modified.
606 * @file contains the file structure.
607 * @cmd contains the operation to perform.
608 * @arg contains the operational arguments.
609 * Check permission for an ioctl operation on @file. Note that @arg can
610 * sometimes represents a user space pointer; in other cases, it may be a
611 * simple integer value. When @arg represents a user space pointer, it
612 * should never be used by the security module.
613 * Return 0 if permission is granted.
615 * Check permissions for a mmap operation. The @file may be NULL, e.g.
616 * if mapping anonymous memory.
617 * @file contains the file structure for file to map (may be NULL).
618 * @reqprot contains the protection requested by the application.
619 * @prot contains the protection that will be applied by the kernel.
620 * @flags contains the operational flags.
621 * Return 0 if permission is granted.
623 * Check permissions before changing memory access permissions.
624 * @vma contains the memory region to modify.
625 * @reqprot contains the protection requested by the application.
626 * @prot contains the protection that will be applied by the kernel.
627 * Return 0 if permission is granted.
629 * Check permission before performing file locking operations.
630 * Note: this hook mediates both flock and fcntl style locks.
631 * @file contains the file structure.
632 * @cmd contains the posix-translated lock operation to perform
633 * (e.g. F_RDLCK, F_WRLCK).
634 * Return 0 if permission is granted.
636 * Check permission before allowing the file operation specified by @cmd
637 * from being performed on the file @file. Note that @arg can sometimes
638 * represents a user space pointer; in other cases, it may be a simple
639 * integer value. When @arg represents a user space pointer, it should
640 * never be used by the security module.
641 * @file contains the file structure.
642 * @cmd contains the operation to be performed.
643 * @arg contains the operational arguments.
644 * Return 0 if permission is granted.
646 * Save owner security information (typically from current->security) in
647 * file->f_security for later use by the send_sigiotask hook.
648 * @file contains the file structure to update.
649 * Return 0 on success.
650 * @file_send_sigiotask:
651 * Check permission for the file owner @fown to send SIGIO or SIGURG to the
652 * process @tsk. Note that this hook is sometimes called from interrupt.
653 * Note that the fown_struct, @fown, is never outside the context of a
654 * struct file, so the file structure (and associated security information)
655 * can always be obtained:
656 * container_of(fown, struct file, f_owner)
657 * @tsk contains the structure of task receiving signal.
658 * @fown contains the file owner information.
659 * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
660 * Return 0 if permission is granted.
662 * This hook allows security modules to control the ability of a process
663 * to receive an open file descriptor via socket IPC.
664 * @file contains the file structure being received.
665 * Return 0 if permission is granted.
667 * Security hook for dentry
670 * Save open-time permission checking state for later use upon
671 * file_permission, and recheck access if anything has changed
672 * since inode_permission.
674 * Security hooks for task operations.
677 * Check permission before creating a child process. See the clone(2)
678 * manual page for definitions of the @clone_flags.
679 * @clone_flags contains the flags indicating what should be shared.
680 * Return 0 if permission is granted.
682 * @cred points to the credentials.
683 * @gfp indicates the atomicity of any memory allocations.
684 * Only allocate sufficient memory and attach to @cred such that
685 * cred_transfer() will not get ENOMEM.
687 * @cred points to the credentials.
688 * Deallocate and clear the cred->security field in a set of credentials.
690 * @new points to the new credentials.
691 * @old points to the original credentials.
692 * @gfp indicates the atomicity of any memory allocations.
693 * Prepare a new set of credentials by copying the data from the old set.
695 * @new points to the new credentials.
696 * @old points to the original credentials.
697 * Install a new set of credentials.
699 * @new points to the new credentials.
700 * @old points to the original credentials.
701 * Transfer data from original creds to new creds
703 * Set the credentials for a kernel service to act as (subjective context).
704 * @new points to the credentials to be modified.
705 * @secid specifies the security ID to be set
706 * The current task must be the one that nominated @secid.
707 * Return 0 if successful.
708 * @kernel_create_files_as:
709 * Set the file creation context in a set of credentials to be the same as
710 * the objective context of the specified inode.
711 * @new points to the credentials to be modified.
712 * @inode points to the inode to use as a reference.
713 * The current task must be the one that nominated @inode.
714 * Return 0 if successful.
715 * @kernel_module_request:
716 * Ability to trigger the kernel to automatically upcall to userspace for
717 * userspace to load a kernel module with the given name.
718 * @kmod_name name of the module requested by the kernel
719 * Return 0 if successful.
721 * Check permission before setting one or more of the user identity
722 * attributes of the current process. The @flags parameter indicates
723 * which of the set*uid system calls invoked this hook and how to
724 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
725 * definitions at the beginning of this file for the @flags values and
727 * @id0 contains a uid.
728 * @id1 contains a uid.
729 * @id2 contains a uid.
730 * @flags contains one of the LSM_SETID_* values.
731 * Return 0 if permission is granted.
733 * Update the module's state after setting one or more of the user
734 * identity attributes of the current process. The @flags parameter
735 * indicates which of the set*uid system calls invoked this hook. If
736 * @new is the set of credentials that will be installed. Modifications
737 * should be made to this rather than to @current->cred.
738 * @old is the set of credentials that are being replaces
739 * @flags contains one of the LSM_SETID_* values.
740 * Return 0 on success.
742 * Check permission before setting one or more of the group identity
743 * attributes of the current process. The @flags parameter indicates
744 * which of the set*gid system calls invoked this hook and how to
745 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
746 * definitions at the beginning of this file for the @flags values and
748 * @id0 contains a gid.
749 * @id1 contains a gid.
750 * @id2 contains a gid.
751 * @flags contains one of the LSM_SETID_* values.
752 * Return 0 if permission is granted.
754 * Check permission before setting the process group identifier of the
755 * process @p to @pgid.
756 * @p contains the task_struct for process being modified.
757 * @pgid contains the new pgid.
758 * Return 0 if permission is granted.
760 * Check permission before getting the process group identifier of the
762 * @p contains the task_struct for the process.
763 * Return 0 if permission is granted.
765 * Check permission before getting the session identifier of the process
767 * @p contains the task_struct for the process.
768 * Return 0 if permission is granted.
770 * Retrieve the security identifier of the process @p.
771 * @p contains the task_struct for the process and place is into @secid.
772 * In case of failure, @secid will be set to zero.
775 * Check permission before setting the supplementary group set of the
777 * @group_info contains the new group information.
778 * Return 0 if permission is granted.
780 * Check permission before setting the nice value of @p to @nice.
781 * @p contains the task_struct of process.
782 * @nice contains the new nice value.
783 * Return 0 if permission is granted.
785 * Check permission before setting the ioprio value of @p to @ioprio.
786 * @p contains the task_struct of process.
787 * @ioprio contains the new ioprio value
788 * Return 0 if permission is granted.
790 * Check permission before getting the ioprio value of @p.
791 * @p contains the task_struct of process.
792 * Return 0 if permission is granted.
794 * Check permission before setting the resource limits of the current
795 * process for @resource to @new_rlim. The old resource limit values can
796 * be examined by dereferencing (current->signal->rlim + resource).
797 * @resource contains the resource whose limit is being set.
798 * @new_rlim contains the new limits for @resource.
799 * Return 0 if permission is granted.
800 * @task_setscheduler:
801 * Check permission before setting scheduling policy and/or parameters of
802 * process @p based on @policy and @lp.
803 * @p contains the task_struct for process.
804 * @policy contains the scheduling policy.
805 * @lp contains the scheduling parameters.
806 * Return 0 if permission is granted.
807 * @task_getscheduler:
808 * Check permission before obtaining scheduling information for process
810 * @p contains the task_struct for process.
811 * Return 0 if permission is granted.
813 * Check permission before moving memory owned by process @p.
814 * @p contains the task_struct for process.
815 * Return 0 if permission is granted.
817 * Check permission before sending signal @sig to @p. @info can be NULL,
818 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
819 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
820 * from the kernel and should typically be permitted.
821 * SIGIO signals are handled separately by the send_sigiotask hook in
823 * @p contains the task_struct for process.
824 * @info contains the signal information.
825 * @sig contains the signal value.
826 * @secid contains the sid of the process where the signal originated
827 * Return 0 if permission is granted.
829 * Check permission before allowing a process to reap a child process @p
830 * and collect its status information.
831 * @p contains the task_struct for process.
832 * Return 0 if permission is granted.
834 * Check permission before performing a process control operation on the
836 * @option contains the operation.
837 * @arg2 contains a argument.
838 * @arg3 contains a argument.
839 * @arg4 contains a argument.
840 * @arg5 contains a argument.
841 * Return -ENOSYS if no-one wanted to handle this op, any other value to
842 * cause prctl() to return immediately with that value.
844 * Set the security attributes for an inode based on an associated task's
845 * security attributes, e.g. for /proc/pid inodes.
846 * @p contains the task_struct for the task.
847 * @inode contains the inode structure for the inode.
849 * Security hooks for Netlink messaging.
852 * Save security information for a netlink message so that permission
853 * checking can be performed when the message is processed. The security
854 * information can be saved using the eff_cap field of the
855 * netlink_skb_parms structure. Also may be used to provide fine
856 * grained control over message transmission.
857 * @sk associated sock of task sending the message.,
858 * @skb contains the sk_buff structure for the netlink message.
859 * Return 0 if the information was successfully saved and message
860 * is allowed to be transmitted.
862 * Check permission before processing the received netlink message in
864 * @skb contains the sk_buff structure for the netlink message.
865 * @cap indicates the capability required
866 * Return 0 if permission is granted.
868 * Security hooks for Unix domain networking.
870 * @unix_stream_connect:
871 * Check permissions before establishing a Unix domain stream connection
872 * between @sock and @other.
873 * @sock contains the socket structure.
874 * @other contains the peer socket structure.
875 * Return 0 if permission is granted.
877 * Check permissions before connecting or sending datagrams from @sock to
879 * @sock contains the socket structure.
880 * @sock contains the peer socket structure.
881 * Return 0 if permission is granted.
883 * The @unix_stream_connect and @unix_may_send hooks were necessary because
884 * Linux provides an alternative to the conventional file name space for Unix
885 * domain sockets. Whereas binding and connecting to sockets in the file name
886 * space is mediated by the typical file permissions (and caught by the mknod
887 * and permission hooks in inode_security_ops), binding and connecting to
888 * sockets in the abstract name space is completely unmediated. Sufficient
889 * control of Unix domain sockets in the abstract name space isn't possible
890 * using only the socket layer hooks, since we need to know the actual target
891 * socket, which is not looked up until we are inside the af_unix code.
893 * Security hooks for socket operations.
896 * Check permissions prior to creating a new socket.
897 * @family contains the requested protocol family.
898 * @type contains the requested communications type.
899 * @protocol contains the requested protocol.
900 * @kern set to 1 if a kernel socket.
901 * Return 0 if permission is granted.
902 * @socket_post_create:
903 * This hook allows a module to update or allocate a per-socket security
904 * structure. Note that the security field was not added directly to the
905 * socket structure, but rather, the socket security information is stored
906 * in the associated inode. Typically, the inode alloc_security hook will
907 * allocate and and attach security information to
908 * sock->inode->i_security. This hook may be used to update the
909 * sock->inode->i_security field with additional information that wasn't
910 * available when the inode was allocated.
911 * @sock contains the newly created socket structure.
912 * @family contains the requested protocol family.
913 * @type contains the requested communications type.
914 * @protocol contains the requested protocol.
915 * @kern set to 1 if a kernel socket.
917 * Check permission before socket protocol layer bind operation is
918 * performed and the socket @sock is bound to the address specified in the
919 * @address parameter.
920 * @sock contains the socket structure.
921 * @address contains the address to bind to.
922 * @addrlen contains the length of address.
923 * Return 0 if permission is granted.
925 * Check permission before socket protocol layer connect operation
926 * attempts to connect socket @sock to a remote address, @address.
927 * @sock contains the socket structure.
928 * @address contains the address of remote endpoint.
929 * @addrlen contains the length of address.
930 * Return 0 if permission is granted.
932 * Check permission before socket protocol layer listen operation.
933 * @sock contains the socket structure.
934 * @backlog contains the maximum length for the pending connection queue.
935 * Return 0 if permission is granted.
937 * Check permission before accepting a new connection. Note that the new
938 * socket, @newsock, has been created and some information copied to it,
939 * but the accept operation has not actually been performed.
940 * @sock contains the listening socket structure.
941 * @newsock contains the newly created server socket for connection.
942 * Return 0 if permission is granted.
944 * Check permission before transmitting a message to another socket.
945 * @sock contains the socket structure.
946 * @msg contains the message to be transmitted.
947 * @size contains the size of message.
948 * Return 0 if permission is granted.
950 * Check permission before receiving a message from a socket.
951 * @sock contains the socket structure.
952 * @msg contains the message structure.
953 * @size contains the size of message structure.
954 * @flags contains the operational flags.
955 * Return 0 if permission is granted.
956 * @socket_getsockname:
957 * Check permission before the local address (name) of the socket object
958 * @sock is retrieved.
959 * @sock contains the socket structure.
960 * Return 0 if permission is granted.
961 * @socket_getpeername:
962 * Check permission before the remote address (name) of a socket object
963 * @sock is retrieved.
964 * @sock contains the socket structure.
965 * Return 0 if permission is granted.
966 * @socket_getsockopt:
967 * Check permissions before retrieving the options associated with socket
969 * @sock contains the socket structure.
970 * @level contains the protocol level to retrieve option from.
971 * @optname contains the name of option to retrieve.
972 * Return 0 if permission is granted.
973 * @socket_setsockopt:
974 * Check permissions before setting the options associated with socket
976 * @sock contains the socket structure.
977 * @level contains the protocol level to set options for.
978 * @optname contains the name of the option to set.
979 * Return 0 if permission is granted.
981 * Checks permission before all or part of a connection on the socket
982 * @sock is shut down.
983 * @sock contains the socket structure.
984 * @how contains the flag indicating how future sends and receives are handled.
985 * Return 0 if permission is granted.
986 * @socket_sock_rcv_skb:
987 * Check permissions on incoming network packets. This hook is distinct
988 * from Netfilter's IP input hooks since it is the first time that the
989 * incoming sk_buff @skb has been associated with a particular socket, @sk.
990 * Must not sleep inside this hook because some callers hold spinlocks.
991 * @sk contains the sock (not socket) associated with the incoming sk_buff.
992 * @skb contains the incoming network data.
993 * @socket_getpeersec_stream:
994 * This hook allows the security module to provide peer socket security
995 * state for unix or connected tcp sockets to userspace via getsockopt
996 * SO_GETPEERSEC. For tcp sockets this can be meaningful if the
997 * socket is associated with an ipsec SA.
998 * @sock is the local socket.
999 * @optval userspace memory where the security state is to be copied.
1000 * @optlen userspace int where the module should copy the actual length
1001 * of the security state.
1002 * @len as input is the maximum length to copy to userspace provided
1004 * Return 0 if all is well, otherwise, typical getsockopt return
1006 * @socket_getpeersec_dgram:
1007 * This hook allows the security module to provide peer socket security
1008 * state for udp sockets on a per-packet basis to userspace via
1009 * getsockopt SO_GETPEERSEC. The application must first have indicated
1010 * the IP_PASSSEC option via getsockopt. It can then retrieve the
1011 * security state returned by this hook for a packet via the SCM_SECURITY
1012 * ancillary message type.
1013 * @skb is the skbuff for the packet being queried
1014 * @secdata is a pointer to a buffer in which to copy the security data
1015 * @seclen is the maximum length for @secdata
1016 * Return 0 on success, error on failure.
1017 * @sk_alloc_security:
1018 * Allocate and attach a security structure to the sk->sk_security field,
1019 * which is used to copy security attributes between local stream sockets.
1020 * @sk_free_security:
1021 * Deallocate security structure.
1022 * @sk_clone_security:
1023 * Clone/copy security structure.
1025 * Retrieve the LSM-specific secid for the sock to enable caching of network
1028 * Sets the socket's isec sid to the sock's sid.
1029 * @inet_conn_request:
1030 * Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
1032 * Sets the new child socket's sid to the openreq sid.
1033 * @inet_conn_established:
1034 * Sets the connection's peersid to the secmark on skb.
1035 * @req_classify_flow:
1036 * Sets the flow's sid to the openreq sid.
1038 * Check permissions prior to creating a new TUN device.
1039 * @tun_dev_post_create:
1040 * This hook allows a module to update or allocate a per-socket security
1042 * @sk contains the newly created sock structure.
1044 * Check permissions prior to attaching to a persistent TUN device. This
1045 * hook can also be used by the module to update any security state
1046 * associated with the TUN device's sock structure.
1047 * @sk contains the existing sock structure.
1049 * Security hooks for XFRM operations.
1051 * @xfrm_policy_alloc_security:
1052 * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
1053 * Database used by the XFRM system.
1054 * @sec_ctx contains the security context information being provided by
1055 * the user-level policy update program (e.g., setkey).
1056 * Allocate a security structure to the xp->security field; the security
1057 * field is initialized to NULL when the xfrm_policy is allocated.
1058 * Return 0 if operation was successful (memory to allocate, legal context)
1059 * @xfrm_policy_clone_security:
1060 * @old_ctx contains an existing xfrm_sec_ctx.
1061 * @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
1062 * Allocate a security structure in new_ctxp that contains the
1063 * information from the old_ctx structure.
1064 * Return 0 if operation was successful (memory to allocate).
1065 * @xfrm_policy_free_security:
1066 * @ctx contains the xfrm_sec_ctx
1067 * Deallocate xp->security.
1068 * @xfrm_policy_delete_security:
1069 * @ctx contains the xfrm_sec_ctx.
1070 * Authorize deletion of xp->security.
1071 * @xfrm_state_alloc_security:
1072 * @x contains the xfrm_state being added to the Security Association
1073 * Database by the XFRM system.
1074 * @sec_ctx contains the security context information being provided by
1075 * the user-level SA generation program (e.g., setkey or racoon).
1076 * @secid contains the secid from which to take the mls portion of the context.
1077 * Allocate a security structure to the x->security field; the security
1078 * field is initialized to NULL when the xfrm_state is allocated. Set the
1079 * context to correspond to either sec_ctx or polsec, with the mls portion
1080 * taken from secid in the latter case.
1081 * Return 0 if operation was successful (memory to allocate, legal context).
1082 * @xfrm_state_free_security:
1083 * @x contains the xfrm_state.
1084 * Deallocate x->security.
1085 * @xfrm_state_delete_security:
1086 * @x contains the xfrm_state.
1087 * Authorize deletion of x->security.
1088 * @xfrm_policy_lookup:
1089 * @ctx contains the xfrm_sec_ctx for which the access control is being
1091 * @fl_secid contains the flow security label that is used to authorize
1092 * access to the policy xp.
1093 * @dir contains the direction of the flow (input or output).
1094 * Check permission when a flow selects a xfrm_policy for processing
1095 * XFRMs on a packet. The hook is called when selecting either a
1096 * per-socket policy or a generic xfrm policy.
1097 * Return 0 if permission is granted, -ESRCH otherwise, or -errno
1099 * @xfrm_state_pol_flow_match:
1100 * @x contains the state to match.
1101 * @xp contains the policy to check for a match.
1102 * @fl contains the flow to check for a match.
1103 * Return 1 if there is a match.
1104 * @xfrm_decode_session:
1105 * @skb points to skb to decode.
1106 * @secid points to the flow key secid to set.
1107 * @ckall says if all xfrms used should be checked for same secid.
1108 * Return 0 if ckall is zero or all xfrms used have the same secid.
1110 * Security hooks affecting all Key Management operations
1113 * Permit allocation of a key and assign security data. Note that key does
1114 * not have a serial number assigned at this point.
1115 * @key points to the key.
1116 * @flags is the allocation flags
1117 * Return 0 if permission is granted, -ve error otherwise.
1119 * Notification of destruction; free security data.
1120 * @key points to the key.
1123 * See whether a specific operational right is granted to a process on a
1125 * @key_ref refers to the key (key pointer + possession attribute bit).
1126 * @cred points to the credentials to provide the context against which to
1127 * evaluate the security data on the key.
1128 * @perm describes the combination of permissions required of this key.
1129 * Return 1 if permission granted, 0 if permission denied and -ve it the
1130 * normal permissions model should be effected.
1132 * Get a textual representation of the security context attached to a key
1133 * for the purposes of honouring KEYCTL_GETSECURITY. This function
1134 * allocates the storage for the NUL-terminated string and the caller
1136 * @key points to the key to be queried.
1137 * @_buffer points to a pointer that should be set to point to the
1138 * resulting string (if no label or an error occurs).
1139 * Return the length of the string (including terminating NUL) or -ve if
1141 * May also return 0 (and a NULL buffer pointer) if there is no label.
1142 * @key_session_to_parent:
1143 * Forcibly assign the session keyring from a process to its parent
1145 * @cred: Pointer to process's credentials
1146 * @parent_cred: Pointer to parent process's credentials
1147 * @keyring: Proposed new session keyring
1148 * Return 0 if permission is granted, -ve error otherwise.
1150 * Security hooks affecting all System V IPC operations.
1153 * Check permissions for access to IPC
1154 * @ipcp contains the kernel IPC permission structure
1155 * @flag contains the desired (requested) permission set
1156 * Return 0 if permission is granted.
1158 * Get the secid associated with the ipc object.
1159 * @ipcp contains the kernel IPC permission structure.
1160 * @secid contains a pointer to the location where result will be saved.
1161 * In case of failure, @secid will be set to zero.
1163 * Security hooks for individual messages held in System V IPC message queues
1164 * @msg_msg_alloc_security:
1165 * Allocate and attach a security structure to the msg->security field.
1166 * The security field is initialized to NULL when the structure is first
1168 * @msg contains the message structure to be modified.
1169 * Return 0 if operation was successful and permission is granted.
1170 * @msg_msg_free_security:
1171 * Deallocate the security structure for this message.
1172 * @msg contains the message structure to be modified.
1174 * Security hooks for System V IPC Message Queues
1176 * @msg_queue_alloc_security:
1177 * Allocate and attach a security structure to the
1178 * msq->q_perm.security field. The security field is initialized to
1179 * NULL when the structure is first created.
1180 * @msq contains the message queue structure to be modified.
1181 * Return 0 if operation was successful and permission is granted.
1182 * @msg_queue_free_security:
1183 * Deallocate security structure for this message queue.
1184 * @msq contains the message queue structure to be modified.
1185 * @msg_queue_associate:
1186 * Check permission when a message queue is requested through the
1187 * msgget system call. This hook is only called when returning the
1188 * message queue identifier for an existing message queue, not when a
1189 * new message queue is created.
1190 * @msq contains the message queue to act upon.
1191 * @msqflg contains the operation control flags.
1192 * Return 0 if permission is granted.
1193 * @msg_queue_msgctl:
1194 * Check permission when a message control operation specified by @cmd
1195 * is to be performed on the message queue @msq.
1196 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
1197 * @msq contains the message queue to act upon. May be NULL.
1198 * @cmd contains the operation to be performed.
1199 * Return 0 if permission is granted.
1200 * @msg_queue_msgsnd:
1201 * Check permission before a message, @msg, is enqueued on the message
1203 * @msq contains the message queue to send message to.
1204 * @msg contains the message to be enqueued.
1205 * @msqflg contains operational flags.
1206 * Return 0 if permission is granted.
1207 * @msg_queue_msgrcv:
1208 * Check permission before a message, @msg, is removed from the message
1209 * queue, @msq. The @target task structure contains a pointer to the
1210 * process that will be receiving the message (not equal to the current
1211 * process when inline receives are being performed).
1212 * @msq contains the message queue to retrieve message from.
1213 * @msg contains the message destination.
1214 * @target contains the task structure for recipient process.
1215 * @type contains the type of message requested.
1216 * @mode contains the operational flags.
1217 * Return 0 if permission is granted.
1219 * Security hooks for System V Shared Memory Segments
1221 * @shm_alloc_security:
1222 * Allocate and attach a security structure to the shp->shm_perm.security
1223 * field. The security field is initialized to NULL when the structure is
1225 * @shp contains the shared memory structure to be modified.
1226 * Return 0 if operation was successful and permission is granted.
1227 * @shm_free_security:
1228 * Deallocate the security struct for this memory segment.
1229 * @shp contains the shared memory structure to be modified.
1231 * Check permission when a shared memory region is requested through the
1232 * shmget system call. This hook is only called when returning the shared
1233 * memory region identifier for an existing region, not when a new shared
1234 * memory region is created.
1235 * @shp contains the shared memory structure to be modified.
1236 * @shmflg contains the operation control flags.
1237 * Return 0 if permission is granted.
1239 * Check permission when a shared memory control operation specified by
1240 * @cmd is to be performed on the shared memory region @shp.
1241 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1242 * @shp contains shared memory structure to be modified.
1243 * @cmd contains the operation to be performed.
1244 * Return 0 if permission is granted.
1246 * Check permissions prior to allowing the shmat system call to attach the
1247 * shared memory segment @shp to the data segment of the calling process.
1248 * The attaching address is specified by @shmaddr.
1249 * @shp contains the shared memory structure to be modified.
1250 * @shmaddr contains the address to attach memory region to.
1251 * @shmflg contains the operational flags.
1252 * Return 0 if permission is granted.
1254 * Security hooks for System V Semaphores
1256 * @sem_alloc_security:
1257 * Allocate and attach a security structure to the sma->sem_perm.security
1258 * field. The security field is initialized to NULL when the structure is
1260 * @sma contains the semaphore structure
1261 * Return 0 if operation was successful and permission is granted.
1262 * @sem_free_security:
1263 * deallocate security struct for this semaphore
1264 * @sma contains the semaphore structure.
1266 * Check permission when a semaphore is requested through the semget
1267 * system call. This hook is only called when returning the semaphore
1268 * identifier for an existing semaphore, not when a new one must be
1270 * @sma contains the semaphore structure.
1271 * @semflg contains the operation control flags.
1272 * Return 0 if permission is granted.
1274 * Check permission when a semaphore operation specified by @cmd is to be
1275 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
1276 * IPC_INFO or SEM_INFO.
1277 * @sma contains the semaphore structure. May be NULL.
1278 * @cmd contains the operation to be performed.
1279 * Return 0 if permission is granted.
1281 * Check permissions before performing operations on members of the
1282 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1284 * @sma contains the semaphore structure.
1285 * @sops contains the operations to perform.
1286 * @nsops contains the number of operations to perform.
1287 * @alter contains the flag indicating whether changes are to be made.
1288 * Return 0 if permission is granted.
1290 * @ptrace_access_check:
1291 * Check permission before allowing the current process to trace the
1293 * Security modules may also want to perform a process tracing check
1294 * during an execve in the set_security or apply_creds hooks of
1295 * tracing check during an execve in the bprm_set_creds hook of
1296 * binprm_security_ops if the process is being traced and its security
1297 * attributes would be changed by the execve.
1298 * @child contains the task_struct structure for the target process.
1299 * @mode contains the PTRACE_MODE flags indicating the form of access.
1300 * Return 0 if permission is granted.
1302 * Check that the @parent process has sufficient permission to trace the
1303 * current process before allowing the current process to present itself
1304 * to the @parent process for tracing.
1305 * The parent process will still have to undergo the ptrace_access_check
1306 * checks before it is allowed to trace this one.
1307 * @parent contains the task_struct structure for debugger process.
1308 * Return 0 if permission is granted.
1310 * Get the @effective, @inheritable, and @permitted capability sets for
1311 * the @target process. The hook may also perform permission checking to
1312 * determine if the current process is allowed to see the capability sets
1313 * of the @target process.
1314 * @target contains the task_struct structure for target process.
1315 * @effective contains the effective capability set.
1316 * @inheritable contains the inheritable capability set.
1317 * @permitted contains the permitted capability set.
1318 * Return 0 if the capability sets were successfully obtained.
1320 * Set the @effective, @inheritable, and @permitted capability sets for
1321 * the current process.
1322 * @new contains the new credentials structure for target process.
1323 * @old contains the current credentials structure for target process.
1324 * @effective contains the effective capability set.
1325 * @inheritable contains the inheritable capability set.
1326 * @permitted contains the permitted capability set.
1327 * Return 0 and update @new if permission is granted.
1329 * Check whether the @tsk process has the @cap capability in the indicated
1331 * @tsk contains the task_struct for the process.
1332 * @cred contains the credentials to use.
1333 * @cap contains the capability <include/linux/capability.h>.
1334 * @audit: Whether to write an audit message or not
1335 * Return 0 if the capability is granted for @tsk.
1337 * Check permission before enabling or disabling process accounting. If
1338 * accounting is being enabled, then @file refers to the open file used to
1339 * store accounting records. If accounting is being disabled, then @file
1341 * @file contains the file structure for the accounting file (may be NULL).
1342 * Return 0 if permission is granted.
1344 * Check permission before accessing the @table sysctl variable in the
1345 * manner specified by @op.
1346 * @table contains the ctl_table structure for the sysctl variable.
1347 * @op contains the operation (001 = search, 002 = write, 004 = read).
1348 * Return 0 if permission is granted.
1350 * Check permission before accessing the kernel message ring or changing
1351 * logging to the console.
1352 * See the syslog(2) manual page for an explanation of the @type values.
1353 * @type contains the type of action.
1354 * @from_file indicates the context of action (if it came from /proc).
1355 * Return 0 if permission is granted.
1357 * Check permission to change the system time.
1358 * struct timespec and timezone are defined in include/linux/time.h
1359 * @ts contains new time
1360 * @tz contains new timezone
1361 * Return 0 if permission is granted.
1362 * @vm_enough_memory:
1363 * Check permissions for allocating a new virtual mapping.
1364 * @mm contains the mm struct it is being added to.
1365 * @pages contains the number of pages.
1366 * Return 0 if permission is granted.
1369 * Convert secid to security context.
1370 * @secid contains the security ID.
1371 * @secdata contains the pointer that stores the converted security context.
1373 * Convert security context to secid.
1374 * @secid contains the pointer to the generated security ID.
1375 * @secdata contains the security context.
1378 * Release the security context.
1379 * @secdata contains the security context.
1380 * @seclen contains the length of the security context.
1382 * Security hooks for Audit
1385 * Allocate and initialize an LSM audit rule structure.
1386 * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
1387 * @op contains the operator the rule uses.
1388 * @rulestr contains the context where the rule will be applied to.
1389 * @lsmrule contains a pointer to receive the result.
1390 * Return 0 if @lsmrule has been successfully set,
1391 * -EINVAL in case of an invalid rule.
1393 * @audit_rule_known:
1394 * Specifies whether given @rule contains any fields related to current LSM.
1395 * @rule contains the audit rule of interest.
1396 * Return 1 in case of relation found, 0 otherwise.
1398 * @audit_rule_match:
1399 * Determine if given @secid matches a rule previously approved
1400 * by @audit_rule_known.
1401 * @secid contains the security id in question.
1402 * @field contains the field which relates to current LSM.
1403 * @op contains the operator that will be used for matching.
1404 * @rule points to the audit rule that will be checked against.
1405 * @actx points to the audit context associated with the check.
1406 * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
1409 * Deallocate the LSM audit rule structure previously allocated by
1411 * @rule contains the allocated rule
1413 * @inode_notifysecctx:
1414 * Notify the security module of what the security context of an inode
1415 * should be. Initializes the incore security context managed by the
1416 * security module for this inode. Example usage: NFS client invokes
1417 * this hook to initialize the security context in its incore inode to the
1418 * value provided by the server for the file when the server returned the
1419 * file's attributes to the client.
1421 * Must be called with inode->i_mutex locked.
1423 * @inode we wish to set the security context of.
1424 * @ctx contains the string which we wish to set in the inode.
1425 * @ctxlen contains the length of @ctx.
1428 * Change the security context of an inode. Updates the
1429 * incore security context managed by the security module and invokes the
1430 * fs code as needed (via __vfs_setxattr_noperm) to update any backing
1431 * xattrs that represent the context. Example usage: NFS server invokes
1432 * this hook to change the security context in its incore inode and on the
1433 * backing filesystem to a value provided by the client on a SETATTR
1436 * Must be called with inode->i_mutex locked.
1438 * @dentry contains the inode we wish to set the security context of.
1439 * @ctx contains the string which we wish to set in the inode.
1440 * @ctxlen contains the length of @ctx.
1443 * Returns a string containing all relavent security context information
1445 * @inode we wish to set the security context of.
1446 * @ctx is a pointer in which to place the allocated security context.
1447 * @ctxlen points to the place to put the length of @ctx.
1448 * This is the main security structure.
1450 struct security_operations {
1451 char name[SECURITY_NAME_MAX + 1];
1453 int (*ptrace_access_check) (struct task_struct *child, unsigned int mode);
1454 int (*ptrace_traceme) (struct task_struct *parent);
1455 int (*capget) (struct task_struct *target,
1456 kernel_cap_t *effective,
1457 kernel_cap_t *inheritable, kernel_cap_t *permitted);
1458 int (*capset) (struct cred *new,
1459 const struct cred *old,
1460 const kernel_cap_t *effective,
1461 const kernel_cap_t *inheritable,
1462 const kernel_cap_t *permitted);
1463 int (*capable) (struct task_struct *tsk, const struct cred *cred,
1464 int cap, int audit);
1465 int (*acct) (struct file *file);
1466 int (*sysctl) (struct ctl_table *table, int op);
1467 int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
1468 int (*quota_on) (struct dentry *dentry);
1469 int (*syslog) (int type, bool from_file);
1470 int (*settime) (struct timespec *ts, struct timezone *tz);
1471 int (*vm_enough_memory) (struct mm_struct *mm, long pages);
1473 int (*bprm_set_creds) (struct linux_binprm *bprm);
1474 int (*bprm_check_security) (struct linux_binprm *bprm);
1475 int (*bprm_secureexec) (struct linux_binprm *bprm);
1476 void (*bprm_committing_creds) (struct linux_binprm *bprm);
1477 void (*bprm_committed_creds) (struct linux_binprm *bprm);
1479 int (*sb_alloc_security) (struct super_block *sb);
1480 void (*sb_free_security) (struct super_block *sb);
1481 int (*sb_copy_data) (char *orig, char *copy);
1482 int (*sb_kern_mount) (struct super_block *sb, int flags, void *data);
1483 int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
1484 int (*sb_statfs) (struct dentry *dentry);
1485 int (*sb_mount) (char *dev_name, struct path *path,
1486 char *type, unsigned long flags, void *data);
1487 int (*sb_check_sb) (struct vfsmount *mnt, struct path *path);
1488 int (*sb_umount) (struct vfsmount *mnt, int flags);
1489 void (*sb_umount_close) (struct vfsmount *mnt);
1490 void (*sb_umount_busy) (struct vfsmount *mnt);
1491 void (*sb_post_remount) (struct vfsmount *mnt,
1492 unsigned long flags, void *data);
1493 void (*sb_post_addmount) (struct vfsmount *mnt,
1494 struct path *mountpoint);
1495 int (*sb_pivotroot) (struct path *old_path,
1496 struct path *new_path);
1497 void (*sb_post_pivotroot) (struct path *old_path,
1498 struct path *new_path);
1499 int (*sb_set_mnt_opts) (struct super_block *sb,
1500 struct security_mnt_opts *opts);
1501 void (*sb_clone_mnt_opts) (const struct super_block *oldsb,
1502 struct super_block *newsb);
1503 int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
1505 #ifdef CONFIG_SECURITY_PATH
1506 int (*path_unlink) (struct path *dir, struct dentry *dentry);
1507 int (*path_mkdir) (struct path *dir, struct dentry *dentry, int mode);
1508 int (*path_rmdir) (struct path *dir, struct dentry *dentry);
1509 int (*path_mknod) (struct path *dir, struct dentry *dentry, int mode,
1511 int (*path_truncate) (struct path *path, loff_t length,
1512 unsigned int time_attrs);
1513 int (*path_symlink) (struct path *dir, struct dentry *dentry,
1514 const char *old_name);
1515 int (*path_link) (struct dentry *old_dentry, struct path *new_dir,
1516 struct dentry *new_dentry);
1517 int (*path_rename) (struct path *old_dir, struct dentry *old_dentry,
1518 struct path *new_dir, struct dentry *new_dentry);
1519 int (*path_chmod) (struct dentry *dentry, struct vfsmount *mnt,
1521 int (*path_chown) (struct path *path, uid_t uid, gid_t gid);
1522 int (*path_chroot) (struct path *path);
1525 int (*inode_alloc_security) (struct inode *inode);
1526 void (*inode_free_security) (struct inode *inode);
1527 int (*inode_init_security) (struct inode *inode, struct inode *dir,
1528 char **name, void **value, size_t *len);
1529 int (*inode_create) (struct inode *dir,
1530 struct dentry *dentry, int mode);
1531 int (*inode_link) (struct dentry *old_dentry,
1532 struct inode *dir, struct dentry *new_dentry);
1533 int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
1534 int (*inode_symlink) (struct inode *dir,
1535 struct dentry *dentry, const char *old_name);
1536 int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, int mode);
1537 int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
1538 int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
1539 int mode, dev_t dev);
1540 int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
1541 struct inode *new_dir, struct dentry *new_dentry);
1542 int (*inode_readlink) (struct dentry *dentry);
1543 int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
1544 int (*inode_permission) (struct inode *inode, int mask);
1545 int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
1546 int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
1547 void (*inode_delete) (struct inode *inode);
1548 int (*inode_setxattr) (struct dentry *dentry, const char *name,
1549 const void *value, size_t size, int flags);
1550 void (*inode_post_setxattr) (struct dentry *dentry, const char *name,
1551 const void *value, size_t size, int flags);
1552 int (*inode_getxattr) (struct dentry *dentry, const char *name);
1553 int (*inode_listxattr) (struct dentry *dentry);
1554 int (*inode_removexattr) (struct dentry *dentry, const char *name);
1555 int (*inode_need_killpriv) (struct dentry *dentry);
1556 int (*inode_killpriv) (struct dentry *dentry);
1557 int (*inode_getsecurity) (const struct inode *inode, const char *name, void **buffer, bool alloc);
1558 int (*inode_setsecurity) (struct inode *inode, const char *name, const void *value, size_t size, int flags);
1559 int (*inode_listsecurity) (struct inode *inode, char *buffer, size_t buffer_size);
1560 void (*inode_getsecid) (const struct inode *inode, u32 *secid);
1562 int (*file_permission) (struct file *file, int mask);
1563 int (*file_alloc_security) (struct file *file);
1564 void (*file_free_security) (struct file *file);
1565 int (*file_ioctl) (struct file *file, unsigned int cmd,
1567 int (*file_mmap) (struct file *file,
1568 unsigned long reqprot, unsigned long prot,
1569 unsigned long flags, unsigned long addr,
1570 unsigned long addr_only);
1571 int (*file_mprotect) (struct vm_area_struct *vma,
1572 unsigned long reqprot,
1573 unsigned long prot);
1574 int (*file_lock) (struct file *file, unsigned int cmd);
1575 int (*file_fcntl) (struct file *file, unsigned int cmd,
1577 int (*file_set_fowner) (struct file *file);
1578 int (*file_send_sigiotask) (struct task_struct *tsk,
1579 struct fown_struct *fown, int sig);
1580 int (*file_receive) (struct file *file);
1581 int (*dentry_open) (struct file *file, const struct cred *cred);
1583 int (*task_create) (unsigned long clone_flags);
1584 int (*cred_alloc_blank) (struct cred *cred, gfp_t gfp);
1585 void (*cred_free) (struct cred *cred);
1586 int (*cred_prepare)(struct cred *new, const struct cred *old,
1588 void (*cred_commit)(struct cred *new, const struct cred *old);
1589 void (*cred_transfer)(struct cred *new, const struct cred *old);
1590 int (*kernel_act_as)(struct cred *new, u32 secid);
1591 int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
1592 int (*kernel_module_request)(char *kmod_name);
1593 int (*task_setuid) (uid_t id0, uid_t id1, uid_t id2, int flags);
1594 int (*task_fix_setuid) (struct cred *new, const struct cred *old,
1596 int (*task_setgid) (gid_t id0, gid_t id1, gid_t id2, int flags);
1597 int (*task_setpgid) (struct task_struct *p, pid_t pgid);
1598 int (*task_getpgid) (struct task_struct *p);
1599 int (*task_getsid) (struct task_struct *p);
1600 void (*task_getsecid) (struct task_struct *p, u32 *secid);
1601 int (*task_setgroups) (struct group_info *group_info);
1602 int (*task_setnice) (struct task_struct *p, int nice);
1603 int (*task_setioprio) (struct task_struct *p, int ioprio);
1604 int (*task_getioprio) (struct task_struct *p);
1605 int (*task_setrlimit) (unsigned int resource, struct rlimit *new_rlim);
1606 int (*task_setscheduler) (struct task_struct *p, int policy,
1607 struct sched_param *lp);
1608 int (*task_getscheduler) (struct task_struct *p);
1609 int (*task_movememory) (struct task_struct *p);
1610 int (*task_kill) (struct task_struct *p,
1611 struct siginfo *info, int sig, u32 secid);
1612 int (*task_wait) (struct task_struct *p);
1613 int (*task_prctl) (int option, unsigned long arg2,
1614 unsigned long arg3, unsigned long arg4,
1615 unsigned long arg5);
1616 void (*task_to_inode) (struct task_struct *p, struct inode *inode);
1618 int (*ipc_permission) (struct kern_ipc_perm *ipcp, short flag);
1619 void (*ipc_getsecid) (struct kern_ipc_perm *ipcp, u32 *secid);
1621 int (*msg_msg_alloc_security) (struct msg_msg *msg);
1622 void (*msg_msg_free_security) (struct msg_msg *msg);
1624 int (*msg_queue_alloc_security) (struct msg_queue *msq);
1625 void (*msg_queue_free_security) (struct msg_queue *msq);
1626 int (*msg_queue_associate) (struct msg_queue *msq, int msqflg);
1627 int (*msg_queue_msgctl) (struct msg_queue *msq, int cmd);
1628 int (*msg_queue_msgsnd) (struct msg_queue *msq,
1629 struct msg_msg *msg, int msqflg);
1630 int (*msg_queue_msgrcv) (struct msg_queue *msq,
1631 struct msg_msg *msg,
1632 struct task_struct *target,
1633 long type, int mode);
1635 int (*shm_alloc_security) (struct shmid_kernel *shp);
1636 void (*shm_free_security) (struct shmid_kernel *shp);
1637 int (*shm_associate) (struct shmid_kernel *shp, int shmflg);
1638 int (*shm_shmctl) (struct shmid_kernel *shp, int cmd);
1639 int (*shm_shmat) (struct shmid_kernel *shp,
1640 char __user *shmaddr, int shmflg);
1642 int (*sem_alloc_security) (struct sem_array *sma);
1643 void (*sem_free_security) (struct sem_array *sma);
1644 int (*sem_associate) (struct sem_array *sma, int semflg);
1645 int (*sem_semctl) (struct sem_array *sma, int cmd);
1646 int (*sem_semop) (struct sem_array *sma,
1647 struct sembuf *sops, unsigned nsops, int alter);
1649 int (*netlink_send) (struct sock *sk, struct sk_buff *skb);
1650 int (*netlink_recv) (struct sk_buff *skb, int cap);
1652 void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1654 int (*getprocattr) (struct task_struct *p, char *name, char **value);
1655 int (*setprocattr) (struct task_struct *p, char *name, void *value, size_t size);
1656 int (*secid_to_secctx) (u32 secid, char **secdata, u32 *seclen);
1657 int (*secctx_to_secid) (const char *secdata, u32 seclen, u32 *secid);
1658 void (*release_secctx) (char *secdata, u32 seclen);
1660 int (*inode_notifysecctx)(struct inode *inode, void *ctx, u32 ctxlen);
1661 int (*inode_setsecctx)(struct dentry *dentry, void *ctx, u32 ctxlen);
1662 int (*inode_getsecctx)(struct inode *inode, void **ctx, u32 *ctxlen);
1664 #ifdef CONFIG_SECURITY_NETWORK
1665 int (*unix_stream_connect) (struct socket *sock,
1666 struct socket *other, struct sock *newsk);
1667 int (*unix_may_send) (struct socket *sock, struct socket *other);
1669 int (*socket_create) (int family, int type, int protocol, int kern);
1670 int (*socket_post_create) (struct socket *sock, int family,
1671 int type, int protocol, int kern);
1672 int (*socket_bind) (struct socket *sock,
1673 struct sockaddr *address, int addrlen);
1674 int (*socket_connect) (struct socket *sock,
1675 struct sockaddr *address, int addrlen);
1676 int (*socket_listen) (struct socket *sock, int backlog);
1677 int (*socket_accept) (struct socket *sock, struct socket *newsock);
1678 int (*socket_sendmsg) (struct socket *sock,
1679 struct msghdr *msg, int size);
1680 int (*socket_recvmsg) (struct socket *sock,
1681 struct msghdr *msg, int size, int flags);
1682 int (*socket_getsockname) (struct socket *sock);
1683 int (*socket_getpeername) (struct socket *sock);
1684 int (*socket_getsockopt) (struct socket *sock, int level, int optname);
1685 int (*socket_setsockopt) (struct socket *sock, int level, int optname);
1686 int (*socket_shutdown) (struct socket *sock, int how);
1687 int (*socket_sock_rcv_skb) (struct sock *sk, struct sk_buff *skb);
1688 int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
1689 int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
1690 int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
1691 void (*sk_free_security) (struct sock *sk);
1692 void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
1693 void (*sk_getsecid) (struct sock *sk, u32 *secid);
1694 void (*sock_graft) (struct sock *sk, struct socket *parent);
1695 int (*inet_conn_request) (struct sock *sk, struct sk_buff *skb,
1696 struct request_sock *req);
1697 void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req);
1698 void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb);
1699 void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
1700 int (*tun_dev_create)(void);
1701 void (*tun_dev_post_create)(struct sock *sk);
1702 int (*tun_dev_attach)(struct sock *sk);
1703 #endif /* CONFIG_SECURITY_NETWORK */
1705 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1706 int (*xfrm_policy_alloc_security) (struct xfrm_sec_ctx **ctxp,
1707 struct xfrm_user_sec_ctx *sec_ctx);
1708 int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
1709 void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
1710 int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
1711 int (*xfrm_state_alloc_security) (struct xfrm_state *x,
1712 struct xfrm_user_sec_ctx *sec_ctx,
1714 void (*xfrm_state_free_security) (struct xfrm_state *x);
1715 int (*xfrm_state_delete_security) (struct xfrm_state *x);
1716 int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1717 int (*xfrm_state_pol_flow_match) (struct xfrm_state *x,
1718 struct xfrm_policy *xp,
1720 int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall);
1721 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1723 /* key management security hooks */
1725 int (*key_alloc) (struct key *key, const struct cred *cred, unsigned long flags);
1726 void (*key_free) (struct key *key);
1727 int (*key_permission) (key_ref_t key_ref,
1728 const struct cred *cred,
1730 int (*key_getsecurity)(struct key *key, char **_buffer);
1731 int (*key_session_to_parent)(const struct cred *cred,
1732 const struct cred *parent_cred,
1734 #endif /* CONFIG_KEYS */
1737 int (*audit_rule_init) (u32 field, u32 op, char *rulestr, void **lsmrule);
1738 int (*audit_rule_known) (struct audit_krule *krule);
1739 int (*audit_rule_match) (u32 secid, u32 field, u32 op, void *lsmrule,
1740 struct audit_context *actx);
1741 void (*audit_rule_free) (void *lsmrule);
1742 #endif /* CONFIG_AUDIT */
1746 extern int security_init(void);
1747 extern int security_module_enable(struct security_operations *ops);
1748 extern int register_security(struct security_operations *ops);
1750 /* Security operations */
1751 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
1752 int security_ptrace_traceme(struct task_struct *parent);
1753 int security_capget(struct task_struct *target,
1754 kernel_cap_t *effective,
1755 kernel_cap_t *inheritable,
1756 kernel_cap_t *permitted);
1757 int security_capset(struct cred *new, const struct cred *old,
1758 const kernel_cap_t *effective,
1759 const kernel_cap_t *inheritable,
1760 const kernel_cap_t *permitted);
1761 int security_capable(int cap);
1762 int security_real_capable(struct task_struct *tsk, int cap);
1763 int security_real_capable_noaudit(struct task_struct *tsk, int cap);
1764 int security_acct(struct file *file);
1765 int security_sysctl(struct ctl_table *table, int op);
1766 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
1767 int security_quota_on(struct dentry *dentry);
1768 int security_syslog(int type, bool from_file);
1769 int security_settime(struct timespec *ts, struct timezone *tz);
1770 int security_vm_enough_memory(long pages);
1771 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
1772 int security_vm_enough_memory_kern(long pages);
1773 int security_bprm_set_creds(struct linux_binprm *bprm);
1774 int security_bprm_check(struct linux_binprm *bprm);
1775 void security_bprm_committing_creds(struct linux_binprm *bprm);
1776 void security_bprm_committed_creds(struct linux_binprm *bprm);
1777 int security_bprm_secureexec(struct linux_binprm *bprm);
1778 int security_sb_alloc(struct super_block *sb);
1779 void security_sb_free(struct super_block *sb);
1780 int security_sb_copy_data(char *orig, char *copy);
1781 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
1782 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
1783 int security_sb_statfs(struct dentry *dentry);
1784 int security_sb_mount(char *dev_name, struct path *path,
1785 char *type, unsigned long flags, void *data);
1786 int security_sb_check_sb(struct vfsmount *mnt, struct path *path);
1787 int security_sb_umount(struct vfsmount *mnt, int flags);
1788 void security_sb_umount_close(struct vfsmount *mnt);
1789 void security_sb_umount_busy(struct vfsmount *mnt);
1790 void security_sb_post_remount(struct vfsmount *mnt, unsigned long flags, void *data);
1791 void security_sb_post_addmount(struct vfsmount *mnt, struct path *mountpoint);
1792 int security_sb_pivotroot(struct path *old_path, struct path *new_path);
1793 void security_sb_post_pivotroot(struct path *old_path, struct path *new_path);
1794 int security_sb_set_mnt_opts(struct super_block *sb, struct security_mnt_opts *opts);
1795 void security_sb_clone_mnt_opts(const struct super_block *oldsb,
1796 struct super_block *newsb);
1797 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
1799 int security_inode_alloc(struct inode *inode);
1800 void security_inode_free(struct inode *inode);
1801 int security_inode_init_security(struct inode *inode, struct inode *dir,
1802 char **name, void **value, size_t *len);
1803 int security_inode_create(struct inode *dir, struct dentry *dentry, int mode);
1804 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1805 struct dentry *new_dentry);
1806 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
1807 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
1808 const char *old_name);
1809 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode);
1810 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
1811 int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev);
1812 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
1813 struct inode *new_dir, struct dentry *new_dentry);
1814 int security_inode_readlink(struct dentry *dentry);
1815 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
1816 int security_inode_permission(struct inode *inode, int mask);
1817 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
1818 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
1819 void security_inode_delete(struct inode *inode);
1820 int security_inode_setxattr(struct dentry *dentry, const char *name,
1821 const void *value, size_t size, int flags);
1822 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1823 const void *value, size_t size, int flags);
1824 int security_inode_getxattr(struct dentry *dentry, const char *name);
1825 int security_inode_listxattr(struct dentry *dentry);
1826 int security_inode_removexattr(struct dentry *dentry, const char *name);
1827 int security_inode_need_killpriv(struct dentry *dentry);
1828 int security_inode_killpriv(struct dentry *dentry);
1829 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
1830 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1831 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
1832 void security_inode_getsecid(const struct inode *inode, u32 *secid);
1833 int security_file_permission(struct file *file, int mask);
1834 int security_file_alloc(struct file *file);
1835 void security_file_free(struct file *file);
1836 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
1837 int security_file_mmap(struct file *file, unsigned long reqprot,
1838 unsigned long prot, unsigned long flags,
1839 unsigned long addr, unsigned long addr_only);
1840 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1841 unsigned long prot);
1842 int security_file_lock(struct file *file, unsigned int cmd);
1843 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
1844 int security_file_set_fowner(struct file *file);
1845 int security_file_send_sigiotask(struct task_struct *tsk,
1846 struct fown_struct *fown, int sig);
1847 int security_file_receive(struct file *file);
1848 int security_dentry_open(struct file *file, const struct cred *cred);
1849 int security_task_create(unsigned long clone_flags);
1850 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
1851 void security_cred_free(struct cred *cred);
1852 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
1853 void security_commit_creds(struct cred *new, const struct cred *old);
1854 void security_transfer_creds(struct cred *new, const struct cred *old);
1855 int security_kernel_act_as(struct cred *new, u32 secid);
1856 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
1857 int security_kernel_module_request(char *kmod_name);
1858 int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags);
1859 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1861 int security_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags);
1862 int security_task_setpgid(struct task_struct *p, pid_t pgid);
1863 int security_task_getpgid(struct task_struct *p);
1864 int security_task_getsid(struct task_struct *p);
1865 void security_task_getsecid(struct task_struct *p, u32 *secid);
1866 int security_task_setgroups(struct group_info *group_info);
1867 int security_task_setnice(struct task_struct *p, int nice);
1868 int security_task_setioprio(struct task_struct *p, int ioprio);
1869 int security_task_getioprio(struct task_struct *p);
1870 int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim);
1871 int security_task_setscheduler(struct task_struct *p,
1872 int policy, struct sched_param *lp);
1873 int security_task_getscheduler(struct task_struct *p);
1874 int security_task_movememory(struct task_struct *p);
1875 int security_task_kill(struct task_struct *p, struct siginfo *info,
1876 int sig, u32 secid);
1877 int security_task_wait(struct task_struct *p);
1878 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1879 unsigned long arg4, unsigned long arg5);
1880 void security_task_to_inode(struct task_struct *p, struct inode *inode);
1881 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
1882 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
1883 int security_msg_msg_alloc(struct msg_msg *msg);
1884 void security_msg_msg_free(struct msg_msg *msg);
1885 int security_msg_queue_alloc(struct msg_queue *msq);
1886 void security_msg_queue_free(struct msg_queue *msq);
1887 int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
1888 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
1889 int security_msg_queue_msgsnd(struct msg_queue *msq,
1890 struct msg_msg *msg, int msqflg);
1891 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1892 struct task_struct *target, long type, int mode);
1893 int security_shm_alloc(struct shmid_kernel *shp);
1894 void security_shm_free(struct shmid_kernel *shp);
1895 int security_shm_associate(struct shmid_kernel *shp, int shmflg);
1896 int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
1897 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
1898 int security_sem_alloc(struct sem_array *sma);
1899 void security_sem_free(struct sem_array *sma);
1900 int security_sem_associate(struct sem_array *sma, int semflg);
1901 int security_sem_semctl(struct sem_array *sma, int cmd);
1902 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1903 unsigned nsops, int alter);
1904 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
1905 int security_getprocattr(struct task_struct *p, char *name, char **value);
1906 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
1907 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
1908 int security_netlink_recv(struct sk_buff *skb, int cap);
1909 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
1910 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
1911 void security_release_secctx(char *secdata, u32 seclen);
1913 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
1914 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
1915 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
1916 #else /* CONFIG_SECURITY */
1917 struct security_mnt_opts {
1920 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
1924 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
1929 * This is the default capabilities functionality. Most of these functions
1930 * are just stubbed out, but a few must call the proper capable code.
1933 static inline int security_init(void)
1938 static inline int security_ptrace_access_check(struct task_struct *child,
1941 return cap_ptrace_access_check(child, mode);
1944 static inline int security_ptrace_traceme(struct task_struct *parent)
1946 return cap_ptrace_traceme(parent);
1949 static inline int security_capget(struct task_struct *target,
1950 kernel_cap_t *effective,
1951 kernel_cap_t *inheritable,
1952 kernel_cap_t *permitted)
1954 return cap_capget(target, effective, inheritable, permitted);
1957 static inline int security_capset(struct cred *new,
1958 const struct cred *old,
1959 const kernel_cap_t *effective,
1960 const kernel_cap_t *inheritable,
1961 const kernel_cap_t *permitted)
1963 return cap_capset(new, old, effective, inheritable, permitted);
1966 static inline int security_capable(int cap)
1968 return cap_capable(current, current_cred(), cap, SECURITY_CAP_AUDIT);
1971 static inline int security_real_capable(struct task_struct *tsk, int cap)
1976 ret = cap_capable(tsk, __task_cred(tsk), cap, SECURITY_CAP_AUDIT);
1982 int security_real_capable_noaudit(struct task_struct *tsk, int cap)
1987 ret = cap_capable(tsk, __task_cred(tsk), cap,
1988 SECURITY_CAP_NOAUDIT);
1993 static inline int security_acct(struct file *file)
1998 static inline int security_sysctl(struct ctl_table *table, int op)
2003 static inline int security_quotactl(int cmds, int type, int id,
2004 struct super_block *sb)
2009 static inline int security_quota_on(struct dentry *dentry)
2014 static inline int security_syslog(int type, bool from_file)
2016 return cap_syslog(type, from_file);
2019 static inline int security_settime(struct timespec *ts, struct timezone *tz)
2021 return cap_settime(ts, tz);
2024 static inline int security_vm_enough_memory(long pages)
2026 WARN_ON(current->mm == NULL);
2027 return cap_vm_enough_memory(current->mm, pages);
2030 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
2032 WARN_ON(mm == NULL);
2033 return cap_vm_enough_memory(mm, pages);
2036 static inline int security_vm_enough_memory_kern(long pages)
2038 /* If current->mm is a kernel thread then we will pass NULL,
2039 for this specific case that is fine */
2040 return cap_vm_enough_memory(current->mm, pages);
2043 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
2045 return cap_bprm_set_creds(bprm);
2048 static inline int security_bprm_check(struct linux_binprm *bprm)
2053 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
2057 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
2061 static inline int security_bprm_secureexec(struct linux_binprm *bprm)
2063 return cap_bprm_secureexec(bprm);
2066 static inline int security_sb_alloc(struct super_block *sb)
2071 static inline void security_sb_free(struct super_block *sb)
2074 static inline int security_sb_copy_data(char *orig, char *copy)
2079 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
2084 static inline int security_sb_show_options(struct seq_file *m,
2085 struct super_block *sb)
2090 static inline int security_sb_statfs(struct dentry *dentry)
2095 static inline int security_sb_mount(char *dev_name, struct path *path,
2096 char *type, unsigned long flags,
2102 static inline int security_sb_check_sb(struct vfsmount *mnt,
2108 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
2113 static inline void security_sb_umount_close(struct vfsmount *mnt)
2116 static inline void security_sb_umount_busy(struct vfsmount *mnt)
2119 static inline void security_sb_post_remount(struct vfsmount *mnt,
2120 unsigned long flags, void *data)
2123 static inline void security_sb_post_addmount(struct vfsmount *mnt,
2124 struct path *mountpoint)
2127 static inline int security_sb_pivotroot(struct path *old_path,
2128 struct path *new_path)
2133 static inline void security_sb_post_pivotroot(struct path *old_path,
2134 struct path *new_path)
2137 static inline int security_sb_set_mnt_opts(struct super_block *sb,
2138 struct security_mnt_opts *opts)
2143 static inline void security_sb_clone_mnt_opts(const struct super_block *oldsb,
2144 struct super_block *newsb)
2147 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
2152 static inline int security_inode_alloc(struct inode *inode)
2157 static inline void security_inode_free(struct inode *inode)
2160 static inline int security_inode_init_security(struct inode *inode,
2169 static inline int security_inode_create(struct inode *dir,
2170 struct dentry *dentry,
2176 static inline int security_inode_link(struct dentry *old_dentry,
2178 struct dentry *new_dentry)
2183 static inline int security_inode_unlink(struct inode *dir,
2184 struct dentry *dentry)
2189 static inline int security_inode_symlink(struct inode *dir,
2190 struct dentry *dentry,
2191 const char *old_name)
2196 static inline int security_inode_mkdir(struct inode *dir,
2197 struct dentry *dentry,
2203 static inline int security_inode_rmdir(struct inode *dir,
2204 struct dentry *dentry)
2209 static inline int security_inode_mknod(struct inode *dir,
2210 struct dentry *dentry,
2211 int mode, dev_t dev)
2216 static inline int security_inode_rename(struct inode *old_dir,
2217 struct dentry *old_dentry,
2218 struct inode *new_dir,
2219 struct dentry *new_dentry)
2224 static inline int security_inode_readlink(struct dentry *dentry)
2229 static inline int security_inode_follow_link(struct dentry *dentry,
2230 struct nameidata *nd)
2235 static inline int security_inode_permission(struct inode *inode, int mask)
2240 static inline int security_inode_setattr(struct dentry *dentry,
2246 static inline int security_inode_getattr(struct vfsmount *mnt,
2247 struct dentry *dentry)
2252 static inline void security_inode_delete(struct inode *inode)
2255 static inline int security_inode_setxattr(struct dentry *dentry,
2256 const char *name, const void *value, size_t size, int flags)
2258 return cap_inode_setxattr(dentry, name, value, size, flags);
2261 static inline void security_inode_post_setxattr(struct dentry *dentry,
2262 const char *name, const void *value, size_t size, int flags)
2265 static inline int security_inode_getxattr(struct dentry *dentry,
2271 static inline int security_inode_listxattr(struct dentry *dentry)
2276 static inline int security_inode_removexattr(struct dentry *dentry,
2279 return cap_inode_removexattr(dentry, name);
2282 static inline int security_inode_need_killpriv(struct dentry *dentry)
2284 return cap_inode_need_killpriv(dentry);
2287 static inline int security_inode_killpriv(struct dentry *dentry)
2289 return cap_inode_killpriv(dentry);
2292 static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
2297 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
2302 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
2307 static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
2312 static inline int security_file_permission(struct file *file, int mask)
2317 static inline int security_file_alloc(struct file *file)
2322 static inline void security_file_free(struct file *file)
2325 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
2331 static inline int security_file_mmap(struct file *file, unsigned long reqprot,
2333 unsigned long flags,
2335 unsigned long addr_only)
2337 return cap_file_mmap(file, reqprot, prot, flags, addr, addr_only);
2340 static inline int security_file_mprotect(struct vm_area_struct *vma,
2341 unsigned long reqprot,
2347 static inline int security_file_lock(struct file *file, unsigned int cmd)
2352 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
2358 static inline int security_file_set_fowner(struct file *file)
2363 static inline int security_file_send_sigiotask(struct task_struct *tsk,
2364 struct fown_struct *fown,
2370 static inline int security_file_receive(struct file *file)
2375 static inline int security_dentry_open(struct file *file,
2376 const struct cred *cred)
2381 static inline int security_task_create(unsigned long clone_flags)
2386 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
2391 static inline void security_cred_free(struct cred *cred)
2394 static inline int security_prepare_creds(struct cred *new,
2395 const struct cred *old,
2401 static inline void security_commit_creds(struct cred *new,
2402 const struct cred *old)
2406 static inline void security_transfer_creds(struct cred *new,
2407 const struct cred *old)
2411 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
2416 static inline int security_kernel_create_files_as(struct cred *cred,
2417 struct inode *inode)
2422 static inline int security_kernel_module_request(char *kmod_name)
2427 static inline int security_task_setuid(uid_t id0, uid_t id1, uid_t id2,
2433 static inline int security_task_fix_setuid(struct cred *new,
2434 const struct cred *old,
2437 return cap_task_fix_setuid(new, old, flags);
2440 static inline int security_task_setgid(gid_t id0, gid_t id1, gid_t id2,
2446 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
2451 static inline int security_task_getpgid(struct task_struct *p)
2456 static inline int security_task_getsid(struct task_struct *p)
2461 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
2466 static inline int security_task_setgroups(struct group_info *group_info)
2471 static inline int security_task_setnice(struct task_struct *p, int nice)
2473 return cap_task_setnice(p, nice);
2476 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
2478 return cap_task_setioprio(p, ioprio);
2481 static inline int security_task_getioprio(struct task_struct *p)
2486 static inline int security_task_setrlimit(unsigned int resource,
2487 struct rlimit *new_rlim)
2492 static inline int security_task_setscheduler(struct task_struct *p,
2494 struct sched_param *lp)
2496 return cap_task_setscheduler(p, policy, lp);
2499 static inline int security_task_getscheduler(struct task_struct *p)
2504 static inline int security_task_movememory(struct task_struct *p)
2509 static inline int security_task_kill(struct task_struct *p,
2510 struct siginfo *info, int sig,
2516 static inline int security_task_wait(struct task_struct *p)
2521 static inline int security_task_prctl(int option, unsigned long arg2,
2526 return cap_task_prctl(option, arg2, arg3, arg3, arg5);
2529 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
2532 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
2538 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
2543 static inline int security_msg_msg_alloc(struct msg_msg *msg)
2548 static inline void security_msg_msg_free(struct msg_msg *msg)
2551 static inline int security_msg_queue_alloc(struct msg_queue *msq)
2556 static inline void security_msg_queue_free(struct msg_queue *msq)
2559 static inline int security_msg_queue_associate(struct msg_queue *msq,
2565 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
2570 static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
2571 struct msg_msg *msg, int msqflg)
2576 static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
2577 struct msg_msg *msg,
2578 struct task_struct *target,
2579 long type, int mode)
2584 static inline int security_shm_alloc(struct shmid_kernel *shp)
2589 static inline void security_shm_free(struct shmid_kernel *shp)
2592 static inline int security_shm_associate(struct shmid_kernel *shp,
2598 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
2603 static inline int security_shm_shmat(struct shmid_kernel *shp,
2604 char __user *shmaddr, int shmflg)
2609 static inline int security_sem_alloc(struct sem_array *sma)
2614 static inline void security_sem_free(struct sem_array *sma)
2617 static inline int security_sem_associate(struct sem_array *sma, int semflg)
2622 static inline int security_sem_semctl(struct sem_array *sma, int cmd)
2627 static inline int security_sem_semop(struct sem_array *sma,
2628 struct sembuf *sops, unsigned nsops,
2634 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
2637 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
2642 static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2647 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
2649 return cap_netlink_send(sk, skb);
2652 static inline int security_netlink_recv(struct sk_buff *skb, int cap)
2654 return cap_netlink_recv(skb, cap);
2657 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2662 static inline int security_secctx_to_secid(const char *secdata,
2669 static inline void security_release_secctx(char *secdata, u32 seclen)
2673 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
2677 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
2681 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
2685 #endif /* CONFIG_SECURITY */
2687 #ifdef CONFIG_SECURITY_NETWORK
2689 int security_unix_stream_connect(struct socket *sock, struct socket *other,
2690 struct sock *newsk);
2691 int security_unix_may_send(struct socket *sock, struct socket *other);
2692 int security_socket_create(int family, int type, int protocol, int kern);
2693 int security_socket_post_create(struct socket *sock, int family,
2694 int type, int protocol, int kern);
2695 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
2696 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
2697 int security_socket_listen(struct socket *sock, int backlog);
2698 int security_socket_accept(struct socket *sock, struct socket *newsock);
2699 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
2700 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2701 int size, int flags);
2702 int security_socket_getsockname(struct socket *sock);
2703 int security_socket_getpeername(struct socket *sock);
2704 int security_socket_getsockopt(struct socket *sock, int level, int optname);
2705 int security_socket_setsockopt(struct socket *sock, int level, int optname);
2706 int security_socket_shutdown(struct socket *sock, int how);
2707 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
2708 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2709 int __user *optlen, unsigned len);
2710 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
2711 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
2712 void security_sk_free(struct sock *sk);
2713 void security_sk_clone(const struct sock *sk, struct sock *newsk);
2714 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
2715 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
2716 void security_sock_graft(struct sock*sk, struct socket *parent);
2717 int security_inet_conn_request(struct sock *sk,
2718 struct sk_buff *skb, struct request_sock *req);
2719 void security_inet_csk_clone(struct sock *newsk,
2720 const struct request_sock *req);
2721 void security_inet_conn_established(struct sock *sk,
2722 struct sk_buff *skb);
2723 int security_tun_dev_create(void);
2724 void security_tun_dev_post_create(struct sock *sk);
2725 int security_tun_dev_attach(struct sock *sk);
2727 #else /* CONFIG_SECURITY_NETWORK */
2728 static inline int security_unix_stream_connect(struct socket *sock,
2729 struct socket *other,
2735 static inline int security_unix_may_send(struct socket *sock,
2736 struct socket *other)
2741 static inline int security_socket_create(int family, int type,
2742 int protocol, int kern)
2747 static inline int security_socket_post_create(struct socket *sock,
2750 int protocol, int kern)
2755 static inline int security_socket_bind(struct socket *sock,
2756 struct sockaddr *address,
2762 static inline int security_socket_connect(struct socket *sock,
2763 struct sockaddr *address,
2769 static inline int security_socket_listen(struct socket *sock, int backlog)
2774 static inline int security_socket_accept(struct socket *sock,
2775 struct socket *newsock)
2780 static inline int security_socket_sendmsg(struct socket *sock,
2781 struct msghdr *msg, int size)
2786 static inline int security_socket_recvmsg(struct socket *sock,
2787 struct msghdr *msg, int size,
2793 static inline int security_socket_getsockname(struct socket *sock)
2798 static inline int security_socket_getpeername(struct socket *sock)
2803 static inline int security_socket_getsockopt(struct socket *sock,
2804 int level, int optname)
2809 static inline int security_socket_setsockopt(struct socket *sock,
2810 int level, int optname)
2815 static inline int security_socket_shutdown(struct socket *sock, int how)
2819 static inline int security_sock_rcv_skb(struct sock *sk,
2820 struct sk_buff *skb)
2825 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2826 int __user *optlen, unsigned len)
2828 return -ENOPROTOOPT;
2831 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
2833 return -ENOPROTOOPT;
2836 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2841 static inline void security_sk_free(struct sock *sk)
2845 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
2849 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
2853 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2857 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
2861 static inline int security_inet_conn_request(struct sock *sk,
2862 struct sk_buff *skb, struct request_sock *req)
2867 static inline void security_inet_csk_clone(struct sock *newsk,
2868 const struct request_sock *req)
2872 static inline void security_inet_conn_established(struct sock *sk,
2873 struct sk_buff *skb)
2877 static inline int security_tun_dev_create(void)
2882 static inline void security_tun_dev_post_create(struct sock *sk)
2886 static inline int security_tun_dev_attach(struct sock *sk)
2890 #endif /* CONFIG_SECURITY_NETWORK */
2892 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2894 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx);
2895 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
2896 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
2897 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
2898 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
2899 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2900 struct xfrm_sec_ctx *polsec, u32 secid);
2901 int security_xfrm_state_delete(struct xfrm_state *x);
2902 void security_xfrm_state_free(struct xfrm_state *x);
2903 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
2904 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2905 struct xfrm_policy *xp, struct flowi *fl);
2906 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
2907 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
2909 #else /* CONFIG_SECURITY_NETWORK_XFRM */
2911 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
2916 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
2921 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
2925 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
2930 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
2931 struct xfrm_user_sec_ctx *sec_ctx)
2936 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2937 struct xfrm_sec_ctx *polsec, u32 secid)
2942 static inline void security_xfrm_state_free(struct xfrm_state *x)
2946 static inline int security_xfrm_state_delete(struct xfrm_state *x)
2951 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
2956 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2957 struct xfrm_policy *xp, struct flowi *fl)
2962 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
2967 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2971 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2973 #ifdef CONFIG_SECURITY_PATH
2974 int security_path_unlink(struct path *dir, struct dentry *dentry);
2975 int security_path_mkdir(struct path *dir, struct dentry *dentry, int mode);
2976 int security_path_rmdir(struct path *dir, struct dentry *dentry);
2977 int security_path_mknod(struct path *dir, struct dentry *dentry, int mode,
2979 int security_path_truncate(struct path *path, loff_t length,
2980 unsigned int time_attrs);
2981 int security_path_symlink(struct path *dir, struct dentry *dentry,
2982 const char *old_name);
2983 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
2984 struct dentry *new_dentry);
2985 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
2986 struct path *new_dir, struct dentry *new_dentry);
2987 int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
2989 int security_path_chown(struct path *path, uid_t uid, gid_t gid);
2990 int security_path_chroot(struct path *path);
2991 #else /* CONFIG_SECURITY_PATH */
2992 static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
2997 static inline int security_path_mkdir(struct path *dir, struct dentry *dentry,
3003 static inline int security_path_rmdir(struct path *dir, struct dentry *dentry)
3008 static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
3009 int mode, unsigned int dev)
3014 static inline int security_path_truncate(struct path *path, loff_t length,
3015 unsigned int time_attrs)
3020 static inline int security_path_symlink(struct path *dir, struct dentry *dentry,
3021 const char *old_name)
3026 static inline int security_path_link(struct dentry *old_dentry,
3027 struct path *new_dir,
3028 struct dentry *new_dentry)
3033 static inline int security_path_rename(struct path *old_dir,
3034 struct dentry *old_dentry,
3035 struct path *new_dir,
3036 struct dentry *new_dentry)
3041 static inline int security_path_chmod(struct dentry *dentry,
3042 struct vfsmount *mnt,
3048 static inline int security_path_chown(struct path *path, uid_t uid, gid_t gid)
3053 static inline int security_path_chroot(struct path *path)
3057 #endif /* CONFIG_SECURITY_PATH */
3060 #ifdef CONFIG_SECURITY
3062 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
3063 void security_key_free(struct key *key);
3064 int security_key_permission(key_ref_t key_ref,
3065 const struct cred *cred, key_perm_t perm);
3066 int security_key_getsecurity(struct key *key, char **_buffer);
3067 int security_key_session_to_parent(const struct cred *cred,
3068 const struct cred *parent_cred,
3073 static inline int security_key_alloc(struct key *key,
3074 const struct cred *cred,
3075 unsigned long flags)
3080 static inline void security_key_free(struct key *key)
3084 static inline int security_key_permission(key_ref_t key_ref,
3085 const struct cred *cred,
3091 static inline int security_key_getsecurity(struct key *key, char **_buffer)
3097 static inline int security_key_session_to_parent(const struct cred *cred,
3098 const struct cred *parent_cred,
3105 #endif /* CONFIG_KEYS */
3108 #ifdef CONFIG_SECURITY
3109 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
3110 int security_audit_rule_known(struct audit_krule *krule);
3111 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
3112 struct audit_context *actx);
3113 void security_audit_rule_free(void *lsmrule);
3117 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
3123 static inline int security_audit_rule_known(struct audit_krule *krule)
3128 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
3129 void *lsmrule, struct audit_context *actx)
3134 static inline void security_audit_rule_free(void *lsmrule)
3137 #endif /* CONFIG_SECURITY */
3138 #endif /* CONFIG_AUDIT */
3140 #ifdef CONFIG_SECURITYFS
3142 extern struct dentry *securityfs_create_file(const char *name, mode_t mode,
3143 struct dentry *parent, void *data,
3144 const struct file_operations *fops);
3145 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
3146 extern void securityfs_remove(struct dentry *dentry);
3148 #else /* CONFIG_SECURITYFS */
3150 static inline struct dentry *securityfs_create_dir(const char *name,
3151 struct dentry *parent)
3153 return ERR_PTR(-ENODEV);
3156 static inline struct dentry *securityfs_create_file(const char *name,
3158 struct dentry *parent,
3160 const struct file_operations *fops)
3162 return ERR_PTR(-ENODEV);
3165 static inline void securityfs_remove(struct dentry *dentry)
3170 #ifdef CONFIG_SECURITY
3172 static inline char *alloc_secdata(void)
3174 return (char *)get_zeroed_page(GFP_KERNEL);
3177 static inline void free_secdata(void *secdata)
3179 free_page((unsigned long)secdata);
3184 static inline char *alloc_secdata(void)
3189 static inline void free_secdata(void *secdata)
3191 #endif /* CONFIG_SECURITY */
3193 #endif /* ! __LINUX_SECURITY_H */
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