4 * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
5 * Copyright (C) 2001 Greg Kroah-Hartman <greg@kroah.com>
6 * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
7 * Copyright (C) 2001 James Morris <jmorris@intercode.com.au>
8 * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group)
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * Due to this file being licensed under the GPL there is controversy over
16 * whether this permits you to write a module that #includes this file
17 * without placing your module under the GPL. Please consult a lawyer for
18 * advice before doing this.
22 #ifndef __LINUX_SECURITY_H
23 #define __LINUX_SECURITY_H
26 #include <linux/binfmts.h>
27 #include <linux/signal.h>
28 #include <linux/resource.h>
29 #include <linux/sem.h>
30 #include <linux/shm.h>
31 #include <linux/mm.h> /* PAGE_ALIGN */
32 #include <linux/msg.h>
33 #include <linux/sched.h>
34 #include <linux/key.h>
35 #include <linux/xfrm.h>
36 #include <linux/gfp.h>
39 /* Maximum number of letters for an LSM name string */
40 #define SECURITY_NAME_MAX 10
42 /* If capable should audit the security request */
43 #define SECURITY_CAP_NOAUDIT 0
44 #define SECURITY_CAP_AUDIT 1
50 * These functions are in security/capability.c and are used
51 * as the default capabilities functions
53 extern int cap_capable(struct task_struct *tsk, const struct cred *cred,
55 extern int cap_settime(struct timespec *ts, struct timezone *tz);
56 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
57 extern int cap_ptrace_traceme(struct task_struct *parent);
58 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
59 extern int cap_capset(struct cred *new, const struct cred *old,
60 const kernel_cap_t *effective,
61 const kernel_cap_t *inheritable,
62 const kernel_cap_t *permitted);
63 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
64 extern int cap_bprm_secureexec(struct linux_binprm *bprm);
65 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
66 const void *value, size_t size, int flags);
67 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
68 extern int cap_inode_need_killpriv(struct dentry *dentry);
69 extern int cap_inode_killpriv(struct dentry *dentry);
70 extern int cap_file_mmap(struct file *file, unsigned long reqprot,
71 unsigned long prot, unsigned long flags,
72 unsigned long addr, unsigned long addr_only);
73 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
74 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
75 unsigned long arg4, unsigned long arg5);
76 extern int cap_task_setscheduler(struct task_struct *p, int policy, struct sched_param *lp);
77 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
78 extern int cap_task_setnice(struct task_struct *p, int nice);
79 extern int cap_syslog(int type, bool from_file);
80 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
92 struct xfrm_user_sec_ctx;
95 extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
96 extern int cap_netlink_recv(struct sk_buff *skb, int cap);
98 void reset_security_ops(void);
101 extern unsigned long mmap_min_addr;
102 extern unsigned long dac_mmap_min_addr;
104 #define dac_mmap_min_addr 0UL
108 * Values used in the task_security_ops calls
110 /* setuid or setgid, id0 == uid or gid */
111 #define LSM_SETID_ID 1
113 /* setreuid or setregid, id0 == real, id1 == eff */
114 #define LSM_SETID_RE 2
116 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
117 #define LSM_SETID_RES 4
119 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
120 #define LSM_SETID_FS 8
122 /* forward declares to avoid warnings */
126 /* bprm->unsafe reasons */
127 #define LSM_UNSAFE_SHARE 1
128 #define LSM_UNSAFE_PTRACE 2
129 #define LSM_UNSAFE_PTRACE_CAP 4
133 * If a hint addr is less than mmap_min_addr change hint to be as
134 * low as possible but still greater than mmap_min_addr
136 static inline unsigned long round_hint_to_min(unsigned long hint)
139 if (((void *)hint != NULL) &&
140 (hint < mmap_min_addr))
141 return PAGE_ALIGN(mmap_min_addr);
144 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
145 void __user *buffer, size_t *lenp, loff_t *ppos);
148 #ifdef CONFIG_SECURITY
150 struct security_mnt_opts {
156 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
158 opts->mnt_opts = NULL;
159 opts->mnt_opts_flags = NULL;
160 opts->num_mnt_opts = 0;
163 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
167 for (i = 0; i < opts->num_mnt_opts; i++)
168 kfree(opts->mnt_opts[i]);
169 kfree(opts->mnt_opts);
170 opts->mnt_opts = NULL;
171 kfree(opts->mnt_opts_flags);
172 opts->mnt_opts_flags = NULL;
173 opts->num_mnt_opts = 0;
177 * struct security_operations - main security structure
179 * Security module identifier.
182 * A string that acts as a unique identifeir for the LSM with max number
183 * of characters = SECURITY_NAME_MAX.
185 * Security hooks for program execution operations.
188 * Save security information in the bprm->security field, typically based
189 * on information about the bprm->file, for later use by the apply_creds
190 * hook. This hook may also optionally check permissions (e.g. for
191 * transitions between security domains).
192 * This hook may be called multiple times during a single execve, e.g. for
193 * interpreters. The hook can tell whether it has already been called by
194 * checking to see if @bprm->security is non-NULL. If so, then the hook
195 * may decide either to retain the security information saved earlier or
197 * @bprm contains the linux_binprm structure.
198 * Return 0 if the hook is successful and permission is granted.
199 * @bprm_check_security:
200 * This hook mediates the point when a search for a binary handler will
201 * begin. It allows a check the @bprm->security value which is set in the
202 * preceding set_creds call. The primary difference from set_creds is
203 * that the argv list and envp list are reliably available in @bprm. This
204 * hook may be called multiple times during a single execve; and in each
205 * pass set_creds is called first.
206 * @bprm contains the linux_binprm structure.
207 * Return 0 if the hook is successful and permission is granted.
208 * @bprm_committing_creds:
209 * Prepare to install the new security attributes of a process being
210 * transformed by an execve operation, based on the old credentials
211 * pointed to by @current->cred and the information set in @bprm->cred by
212 * the bprm_set_creds hook. @bprm points to the linux_binprm structure.
213 * This hook is a good place to perform state changes on the process such
214 * as closing open file descriptors to which access will no longer be
215 * granted when the attributes are changed. This is called immediately
216 * before commit_creds().
217 * @bprm_committed_creds:
218 * Tidy up after the installation of the new security attributes of a
219 * process being transformed by an execve operation. The new credentials
220 * have, by this point, been set to @current->cred. @bprm points to the
221 * linux_binprm structure. This hook is a good place to perform state
222 * changes on the process such as clearing out non-inheritable signal
223 * state. This is called immediately after commit_creds().
225 * Return a boolean value (0 or 1) indicating whether a "secure exec"
226 * is required. The flag is passed in the auxiliary table
227 * on the initial stack to the ELF interpreter to indicate whether libc
228 * should enable secure mode.
229 * @bprm contains the linux_binprm structure.
231 * Security hooks for filesystem operations.
233 * @sb_alloc_security:
234 * Allocate and attach a security structure to the sb->s_security field.
235 * The s_security field is initialized to NULL when the structure is
237 * @sb contains the super_block structure to be modified.
238 * Return 0 if operation was successful.
240 * Deallocate and clear the sb->s_security field.
241 * @sb contains the super_block structure to be modified.
243 * Check permission before obtaining filesystem statistics for the @mnt
245 * @dentry is a handle on the superblock for the filesystem.
246 * Return 0 if permission is granted.
248 * Check permission before an object specified by @dev_name is mounted on
249 * the mount point named by @nd. For an ordinary mount, @dev_name
250 * identifies a device if the file system type requires a device. For a
251 * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a
252 * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
253 * pathname of the object being mounted.
254 * @dev_name contains the name for object being mounted.
255 * @path contains the path for mount point object.
256 * @type contains the filesystem type.
257 * @flags contains the mount flags.
258 * @data contains the filesystem-specific data.
259 * Return 0 if permission is granted.
261 * Allow mount option data to be copied prior to parsing by the filesystem,
262 * so that the security module can extract security-specific mount
263 * options cleanly (a filesystem may modify the data e.g. with strsep()).
264 * This also allows the original mount data to be stripped of security-
265 * specific options to avoid having to make filesystems aware of them.
266 * @type the type of filesystem being mounted.
267 * @orig the original mount data copied from userspace.
268 * @copy copied data which will be passed to the security module.
269 * Returns 0 if the copy was successful.
271 * Check permission before the @mnt file system is unmounted.
272 * @mnt contains the mounted file system.
273 * @flags contains the unmount flags, e.g. MNT_FORCE.
274 * Return 0 if permission is granted.
276 * Close any files in the @mnt mounted filesystem that are held open by
277 * the security module. This hook is called during an umount operation
278 * prior to checking whether the filesystem is still busy.
279 * @mnt contains the mounted filesystem.
281 * Handle a failed umount of the @mnt mounted filesystem, e.g. re-opening
282 * any files that were closed by umount_close. This hook is called during
283 * an umount operation if the umount fails after a call to the
285 * @mnt contains the mounted filesystem.
287 * Update the security module's state when a filesystem is remounted.
288 * This hook is only called if the remount was successful.
289 * @mnt contains the mounted file system.
290 * @flags contains the new filesystem flags.
291 * @data contains the filesystem-specific data.
293 * Update the security module's state when a filesystem is mounted.
294 * This hook is called any time a mount is successfully grafetd to
296 * @mnt contains the mounted filesystem.
297 * @mountpoint contains the path for the mount point.
299 * Check permission before pivoting the root filesystem.
300 * @old_path contains the path for the new location of the current root (put_old).
301 * @new_path contains the path for the new root (new_root).
302 * Return 0 if permission is granted.
303 * @sb_post_pivotroot:
304 * Update module state after a successful pivot.
305 * @old_path contains the path for the old root.
306 * @new_path contains the path for the new root.
308 * Set the security relevant mount options used for a superblock
309 * @sb the superblock to set security mount options for
310 * @opts binary data structure containing all lsm mount data
311 * @sb_clone_mnt_opts:
312 * Copy all security options from a given superblock to another
313 * @oldsb old superblock which contain information to clone
314 * @newsb new superblock which needs filled in
315 * @sb_parse_opts_str:
316 * Parse a string of security data filling in the opts structure
317 * @options string containing all mount options known by the LSM
318 * @opts binary data structure usable by the LSM
320 * Security hooks for inode operations.
322 * @inode_alloc_security:
323 * Allocate and attach a security structure to @inode->i_security. The
324 * i_security field is initialized to NULL when the inode structure is
326 * @inode contains the inode structure.
327 * Return 0 if operation was successful.
328 * @inode_free_security:
329 * @inode contains the inode structure.
330 * Deallocate the inode security structure and set @inode->i_security to
332 * @inode_init_security:
333 * Obtain the security attribute name suffix and value to set on a newly
334 * created inode and set up the incore security field for the new inode.
335 * This hook is called by the fs code as part of the inode creation
336 * transaction and provides for atomic labeling of the inode, unlike
337 * the post_create/mkdir/... hooks called by the VFS. The hook function
338 * is expected to allocate the name and value via kmalloc, with the caller
339 * being responsible for calling kfree after using them.
340 * If the security module does not use security attributes or does
341 * not wish to put a security attribute on this particular inode,
342 * then it should return -EOPNOTSUPP to skip this processing.
343 * @inode contains the inode structure of the newly created inode.
344 * @dir contains the inode structure of the parent directory.
345 * @name will be set to the allocated name suffix (e.g. selinux).
346 * @value will be set to the allocated attribute value.
347 * @len will be set to the length of the value.
348 * Returns 0 if @name and @value have been successfully set,
349 * -EOPNOTSUPP if no security attribute is needed, or
350 * -ENOMEM on memory allocation failure.
352 * Check permission to create a regular file.
353 * @dir contains inode structure of the parent of the new file.
354 * @dentry contains the dentry structure for the file to be created.
355 * @mode contains the file mode of the file to be created.
356 * Return 0 if permission is granted.
358 * Check permission before creating a new hard link to a file.
359 * @old_dentry contains the dentry structure for an existing link to the file.
360 * @dir contains the inode structure of the parent directory of the new link.
361 * @new_dentry contains the dentry structure for the new link.
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
367 * @new_dir contains the path structure of the parent directory of
369 * @new_dentry contains the dentry structure for the new link.
370 * Return 0 if permission is granted.
372 * Check the permission to remove a hard link to a file.
373 * @dir contains the inode structure of parent directory of the file.
374 * @dentry contains the dentry structure for file to be unlinked.
375 * Return 0 if permission is granted.
377 * Check the permission to remove a hard link to a file.
378 * @dir contains the path structure of parent directory of the file.
379 * @dentry contains the dentry structure for file to be unlinked.
380 * Return 0 if permission is granted.
382 * Check the permission to create a symbolic link to a file.
383 * @dir contains the inode structure of parent directory of the symbolic link.
384 * @dentry contains the dentry structure of the symbolic link.
385 * @old_name contains the pathname of file.
386 * Return 0 if permission is granted.
388 * Check the permission to create a symbolic link to a file.
389 * @dir contains the path structure of parent directory of
391 * @dentry contains the dentry structure of the symbolic link.
392 * @old_name contains the pathname of file.
393 * Return 0 if permission is granted.
395 * Check permissions to create a new directory in the existing directory
396 * associated with inode strcture @dir.
397 * @dir containst the inode structure of parent of the directory to be created.
398 * @dentry contains the dentry structure of new directory.
399 * @mode contains the mode of new directory.
400 * Return 0 if permission is granted.
402 * Check permissions to create a new directory in the existing directory
403 * associated with path strcture @path.
404 * @dir containst the path structure of parent of the directory
406 * @dentry contains the dentry structure of new directory.
407 * @mode contains the mode of new directory.
408 * Return 0 if permission is granted.
410 * Check the permission to remove a directory.
411 * @dir contains the inode structure of parent of the directory to be removed.
412 * @dentry contains the dentry structure of directory to be removed.
413 * Return 0 if permission is granted.
415 * Check the permission to remove a directory.
416 * @dir contains the path structure of parent of the directory to be
418 * @dentry contains the dentry structure of directory to be removed.
419 * Return 0 if permission is granted.
421 * Check permissions when creating a special file (or a socket or a fifo
422 * file created via the mknod system call). Note that if mknod operation
423 * is being done for a regular file, then the create hook will be called
425 * @dir contains the inode structure of parent of the new file.
426 * @dentry contains the dentry structure of the new file.
427 * @mode contains the mode of the new file.
428 * @dev contains the device number.
429 * Return 0 if permission is granted.
431 * Check permissions when creating a file. Note that this hook is called
432 * even if mknod operation is being done for a regular file.
433 * @dir contains the path structure of parent of the new file.
434 * @dentry contains the dentry structure of the new file.
435 * @mode contains the mode of the new file.
436 * @dev contains the undecoded device number. Use new_decode_dev() to get
437 * the decoded device number.
438 * Return 0 if permission is granted.
440 * Check for permission to rename a file or directory.
441 * @old_dir contains the inode structure for parent of the old link.
442 * @old_dentry contains the dentry structure of the old link.
443 * @new_dir contains the inode structure for parent of the new link.
444 * @new_dentry contains the dentry structure of the new link.
445 * Return 0 if permission is granted.
447 * Check for permission to rename a file or directory.
448 * @old_dir contains the path structure for parent of the old link.
449 * @old_dentry contains the dentry structure of the old link.
450 * @new_dir contains the path structure for parent of the new link.
451 * @new_dentry contains the dentry structure of the new link.
452 * Return 0 if permission is granted.
454 * Check for permission to change DAC's permission of a file or directory.
455 * @dentry contains the dentry structure.
456 * @mnt contains the vfsmnt structure.
457 * @mode contains DAC's mode.
458 * Return 0 if permission is granted.
460 * Check for permission to change owner/group of a file or directory.
461 * @path contains the path structure.
462 * @uid contains new owner's ID.
463 * @gid contains new group's ID.
464 * Return 0 if permission is granted.
466 * Check for permission to change root directory.
467 * @path contains the path structure.
468 * Return 0 if permission is granted.
470 * Check the permission to read the symbolic link.
471 * @dentry contains the dentry structure for the file link.
472 * Return 0 if permission is granted.
473 * @inode_follow_link:
474 * Check permission to follow a symbolic link when looking up a pathname.
475 * @dentry contains the dentry structure for the link.
476 * @nd contains the nameidata structure for the parent directory.
477 * Return 0 if permission is granted.
479 * Check permission before accessing an inode. This hook is called by the
480 * existing Linux permission function, so a security module can use it to
481 * provide additional checking for existing Linux permission checks.
482 * Notice that this hook is called when a file is opened (as well as many
483 * other operations), whereas the file_security_ops permission hook is
484 * called when the actual read/write operations are performed.
485 * @inode contains the inode structure to check.
486 * @mask contains the permission mask.
487 * @nd contains the nameidata (may be NULL).
488 * Return 0 if permission is granted.
490 * Check permission before setting file attributes. Note that the kernel
491 * call to notify_change is performed from several locations, whenever
492 * file attributes change (such as when a file is truncated, chown/chmod
493 * operations, transferring disk quotas, etc).
494 * @dentry contains the dentry structure for the file.
495 * @attr is the iattr structure containing the new file attributes.
496 * Return 0 if permission is granted.
498 * Check permission before truncating a file.
499 * @path contains the path structure for the file.
500 * @length is the new length of the file.
501 * @time_attrs is the flags passed to do_truncate().
502 * Return 0 if permission is granted.
504 * Check permission before obtaining file attributes.
505 * @mnt is the vfsmount where the dentry was looked up
506 * @dentry contains the dentry structure for the file.
507 * Return 0 if permission is granted.
509 * @inode contains the inode structure for deleted inode.
510 * This hook is called when a deleted inode is released (i.e. an inode
511 * with no hard links has its use count drop to zero). A security module
512 * can use this hook to release any persistent label associated with the
515 * Check permission before setting the extended attributes
516 * @value identified by @name for @dentry.
517 * Return 0 if permission is granted.
518 * @inode_post_setxattr:
519 * Update inode security field after successful setxattr operation.
520 * @value identified by @name for @dentry.
522 * Check permission before obtaining the extended attributes
523 * identified by @name for @dentry.
524 * Return 0 if permission is granted.
526 * Check permission before obtaining the list of extended attribute
528 * Return 0 if permission is granted.
529 * @inode_removexattr:
530 * Check permission before removing the extended attribute
531 * identified by @name for @dentry.
532 * Return 0 if permission is granted.
533 * @inode_getsecurity:
534 * Retrieve a copy of the extended attribute representation of the
535 * security label associated with @name for @inode via @buffer. Note that
536 * @name is the remainder of the attribute name after the security prefix
537 * has been removed. @alloc is used to specify of the call should return a
538 * value via the buffer or just the value length Return size of buffer on
540 * @inode_setsecurity:
541 * Set the security label associated with @name for @inode from the
542 * extended attribute value @value. @size indicates the size of the
543 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
544 * Note that @name is the remainder of the attribute name after the
545 * security. prefix has been removed.
546 * Return 0 on success.
547 * @inode_listsecurity:
548 * Copy the extended attribute names for the security labels
549 * associated with @inode into @buffer. The maximum size of @buffer
550 * is specified by @buffer_size. @buffer may be NULL to request
551 * the size of the buffer required.
552 * Returns number of bytes used/required on success.
553 * @inode_need_killpriv:
554 * Called when an inode has been changed.
555 * @dentry is the dentry being changed.
556 * Return <0 on error to abort the inode change operation.
557 * Return 0 if inode_killpriv does not need to be called.
558 * Return >0 if inode_killpriv does need to be called.
560 * The setuid bit is being removed. Remove similar security labels.
561 * Called with the dentry->d_inode->i_mutex held.
562 * @dentry is the dentry being changed.
563 * Return 0 on success. If error is returned, then the operation
564 * causing setuid bit removal is failed.
566 * Get the secid associated with the node.
567 * @inode contains a pointer to the inode.
568 * @secid contains a pointer to the location where result will be saved.
569 * In case of failure, @secid will be set to zero.
571 * Security hooks for file operations
574 * Check file permissions before accessing an open file. This hook is
575 * called by various operations that read or write files. A security
576 * module can use this hook to perform additional checking on these
577 * operations, e.g. to revalidate permissions on use to support privilege
578 * bracketing or policy changes. Notice that this hook is used when the
579 * actual read/write operations are performed, whereas the
580 * inode_security_ops hook is called when a file is opened (as well as
581 * many other operations).
582 * Caveat: Although this hook can be used to revalidate permissions for
583 * various system call operations that read or write files, it does not
584 * address the revalidation of permissions for memory-mapped files.
585 * Security modules must handle this separately if they need such
587 * @file contains the file structure being accessed.
588 * @mask contains the requested permissions.
589 * Return 0 if permission is granted.
590 * @file_alloc_security:
591 * Allocate and attach a security structure to the file->f_security field.
592 * The security field is initialized to NULL when the structure is first
594 * @file contains the file structure to secure.
595 * Return 0 if the hook is successful and permission is granted.
596 * @file_free_security:
597 * Deallocate and free any security structures stored in file->f_security.
598 * @file contains the file structure being modified.
600 * @file contains the file structure.
601 * @cmd contains the operation to perform.
602 * @arg contains the operational arguments.
603 * Check permission for an ioctl operation on @file. Note that @arg can
604 * sometimes represents a user space pointer; in other cases, it may be a
605 * simple integer value. When @arg represents a user space pointer, it
606 * should never be used by the security module.
607 * Return 0 if permission is granted.
609 * Check permissions for a mmap operation. The @file may be NULL, e.g.
610 * if mapping anonymous memory.
611 * @file contains the file structure for file to map (may be NULL).
612 * @reqprot contains the protection requested by the application.
613 * @prot contains the protection that will be applied by the kernel.
614 * @flags contains the operational flags.
615 * Return 0 if permission is granted.
617 * Check permissions before changing memory access permissions.
618 * @vma contains the memory region to modify.
619 * @reqprot contains the protection requested by the application.
620 * @prot contains the protection that will be applied by the kernel.
621 * Return 0 if permission is granted.
623 * Check permission before performing file locking operations.
624 * Note: this hook mediates both flock and fcntl style locks.
625 * @file contains the file structure.
626 * @cmd contains the posix-translated lock operation to perform
627 * (e.g. F_RDLCK, F_WRLCK).
628 * Return 0 if permission is granted.
630 * Check permission before allowing the file operation specified by @cmd
631 * from being performed on the file @file. Note that @arg can sometimes
632 * represents a user space pointer; in other cases, it may be a simple
633 * integer value. When @arg represents a user space pointer, it should
634 * never be used by the security module.
635 * @file contains the file structure.
636 * @cmd contains the operation to be performed.
637 * @arg contains the operational arguments.
638 * Return 0 if permission is granted.
640 * Save owner security information (typically from current->security) in
641 * file->f_security for later use by the send_sigiotask hook.
642 * @file contains the file structure to update.
643 * Return 0 on success.
644 * @file_send_sigiotask:
645 * Check permission for the file owner @fown to send SIGIO or SIGURG to the
646 * process @tsk. Note that this hook is sometimes called from interrupt.
647 * Note that the fown_struct, @fown, is never outside the context of a
648 * struct file, so the file structure (and associated security information)
649 * can always be obtained:
650 * container_of(fown, struct file, f_owner)
651 * @tsk contains the structure of task receiving signal.
652 * @fown contains the file owner information.
653 * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
654 * Return 0 if permission is granted.
656 * This hook allows security modules to control the ability of a process
657 * to receive an open file descriptor via socket IPC.
658 * @file contains the file structure being received.
659 * Return 0 if permission is granted.
661 * Security hook for dentry
664 * Save open-time permission checking state for later use upon
665 * file_permission, and recheck access if anything has changed
666 * since inode_permission.
668 * Security hooks for task operations.
671 * Check permission before creating a child process. See the clone(2)
672 * manual page for definitions of the @clone_flags.
673 * @clone_flags contains the flags indicating what should be shared.
674 * Return 0 if permission is granted.
676 * @cred points to the credentials.
677 * @gfp indicates the atomicity of any memory allocations.
678 * Only allocate sufficient memory and attach to @cred such that
679 * cred_transfer() will not get ENOMEM.
681 * @cred points to the credentials.
682 * Deallocate and clear the cred->security field in a set of credentials.
684 * @new points to the new credentials.
685 * @old points to the original credentials.
686 * @gfp indicates the atomicity of any memory allocations.
687 * Prepare a new set of credentials by copying the data from the old set.
689 * @new points to the new credentials.
690 * @old points to the original credentials.
691 * Install a new set of credentials.
693 * @new points to the new credentials.
694 * @old points to the original credentials.
695 * Transfer data from original creds to new creds
697 * Set the credentials for a kernel service to act as (subjective context).
698 * @new points to the credentials to be modified.
699 * @secid specifies the security ID to be set
700 * The current task must be the one that nominated @secid.
701 * Return 0 if successful.
702 * @kernel_create_files_as:
703 * Set the file creation context in a set of credentials to be the same as
704 * the objective context of the specified inode.
705 * @new points to the credentials to be modified.
706 * @inode points to the inode to use as a reference.
707 * The current task must be the one that nominated @inode.
708 * Return 0 if successful.
709 * @kernel_module_request:
710 * Ability to trigger the kernel to automatically upcall to userspace for
711 * userspace to load a kernel module with the given name.
712 * @kmod_name name of the module requested by the kernel
713 * Return 0 if successful.
715 * Check permission before setting one or more of the user identity
716 * attributes of the current process. The @flags parameter indicates
717 * which of the set*uid system calls invoked this hook and how to
718 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
719 * definitions at the beginning of this file for the @flags values and
721 * @id0 contains a uid.
722 * @id1 contains a uid.
723 * @id2 contains a uid.
724 * @flags contains one of the LSM_SETID_* values.
725 * Return 0 if permission is granted.
727 * Update the module's state after setting one or more of the user
728 * identity attributes of the current process. The @flags parameter
729 * indicates which of the set*uid system calls invoked this hook. If
730 * @new is the set of credentials that will be installed. Modifications
731 * should be made to this rather than to @current->cred.
732 * @old is the set of credentials that are being replaces
733 * @flags contains one of the LSM_SETID_* values.
734 * Return 0 on success.
736 * Check permission before setting one or more of the group identity
737 * attributes of the current process. The @flags parameter indicates
738 * which of the set*gid system calls invoked this hook and how to
739 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
740 * definitions at the beginning of this file for the @flags values and
742 * @id0 contains a gid.
743 * @id1 contains a gid.
744 * @id2 contains a gid.
745 * @flags contains one of the LSM_SETID_* values.
746 * Return 0 if permission is granted.
748 * Check permission before setting the process group identifier of the
749 * process @p to @pgid.
750 * @p contains the task_struct for process being modified.
751 * @pgid contains the new pgid.
752 * Return 0 if permission is granted.
754 * Check permission before getting the process group identifier of the
756 * @p contains the task_struct for the process.
757 * Return 0 if permission is granted.
759 * Check permission before getting the session identifier of the process
761 * @p contains the task_struct for the process.
762 * Return 0 if permission is granted.
764 * Retrieve the security identifier of the process @p.
765 * @p contains the task_struct for the process and place is into @secid.
766 * In case of failure, @secid will be set to zero.
769 * Check permission before setting the supplementary group set of the
771 * @group_info contains the new group information.
772 * Return 0 if permission is granted.
774 * Check permission before setting the nice value of @p to @nice.
775 * @p contains the task_struct of process.
776 * @nice contains the new nice value.
777 * Return 0 if permission is granted.
779 * Check permission before setting the ioprio value of @p to @ioprio.
780 * @p contains the task_struct of process.
781 * @ioprio contains the new ioprio value
782 * Return 0 if permission is granted.
784 * Check permission before getting the ioprio value of @p.
785 * @p contains the task_struct of process.
786 * Return 0 if permission is granted.
788 * Check permission before setting the resource limits of the current
789 * process for @resource to @new_rlim. The old resource limit values can
790 * be examined by dereferencing (current->signal->rlim + resource).
791 * @resource contains the resource whose limit is being set.
792 * @new_rlim contains the new limits for @resource.
793 * Return 0 if permission is granted.
794 * @task_setscheduler:
795 * Check permission before setting scheduling policy and/or parameters of
796 * process @p based on @policy and @lp.
797 * @p contains the task_struct for process.
798 * @policy contains the scheduling policy.
799 * @lp contains the scheduling parameters.
800 * Return 0 if permission is granted.
801 * @task_getscheduler:
802 * Check permission before obtaining scheduling information for process
804 * @p contains the task_struct for process.
805 * Return 0 if permission is granted.
807 * Check permission before moving memory owned by process @p.
808 * @p contains the task_struct for process.
809 * Return 0 if permission is granted.
811 * Check permission before sending signal @sig to @p. @info can be NULL,
812 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
813 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
814 * from the kernel and should typically be permitted.
815 * SIGIO signals are handled separately by the send_sigiotask hook in
817 * @p contains the task_struct for process.
818 * @info contains the signal information.
819 * @sig contains the signal value.
820 * @secid contains the sid of the process where the signal originated
821 * Return 0 if permission is granted.
823 * Check permission before allowing a process to reap a child process @p
824 * and collect its status information.
825 * @p contains the task_struct for process.
826 * Return 0 if permission is granted.
828 * Check permission before performing a process control operation on the
830 * @option contains the operation.
831 * @arg2 contains a argument.
832 * @arg3 contains a argument.
833 * @arg4 contains a argument.
834 * @arg5 contains a argument.
835 * Return -ENOSYS if no-one wanted to handle this op, any other value to
836 * cause prctl() to return immediately with that value.
838 * Set the security attributes for an inode based on an associated task's
839 * security attributes, e.g. for /proc/pid inodes.
840 * @p contains the task_struct for the task.
841 * @inode contains the inode structure for the inode.
843 * Security hooks for Netlink messaging.
846 * Save security information for a netlink message so that permission
847 * checking can be performed when the message is processed. The security
848 * information can be saved using the eff_cap field of the
849 * netlink_skb_parms structure. Also may be used to provide fine
850 * grained control over message transmission.
851 * @sk associated sock of task sending the message.,
852 * @skb contains the sk_buff structure for the netlink message.
853 * Return 0 if the information was successfully saved and message
854 * is allowed to be transmitted.
856 * Check permission before processing the received netlink message in
858 * @skb contains the sk_buff structure for the netlink message.
859 * @cap indicates the capability required
860 * Return 0 if permission is granted.
862 * Security hooks for Unix domain networking.
864 * @unix_stream_connect:
865 * Check permissions before establishing a Unix domain stream connection
866 * between @sock and @other.
867 * @sock contains the socket structure.
868 * @other contains the peer socket structure.
869 * Return 0 if permission is granted.
871 * Check permissions before connecting or sending datagrams from @sock to
873 * @sock contains the socket structure.
874 * @sock contains the peer socket structure.
875 * Return 0 if permission is granted.
877 * The @unix_stream_connect and @unix_may_send hooks were necessary because
878 * Linux provides an alternative to the conventional file name space for Unix
879 * domain sockets. Whereas binding and connecting to sockets in the file name
880 * space is mediated by the typical file permissions (and caught by the mknod
881 * and permission hooks in inode_security_ops), binding and connecting to
882 * sockets in the abstract name space is completely unmediated. Sufficient
883 * control of Unix domain sockets in the abstract name space isn't possible
884 * using only the socket layer hooks, since we need to know the actual target
885 * socket, which is not looked up until we are inside the af_unix code.
887 * Security hooks for socket operations.
890 * Check permissions prior to creating a new socket.
891 * @family contains the requested protocol family.
892 * @type contains the requested communications type.
893 * @protocol contains the requested protocol.
894 * @kern set to 1 if a kernel socket.
895 * Return 0 if permission is granted.
896 * @socket_post_create:
897 * This hook allows a module to update or allocate a per-socket security
898 * structure. Note that the security field was not added directly to the
899 * socket structure, but rather, the socket security information is stored
900 * in the associated inode. Typically, the inode alloc_security hook will
901 * allocate and and attach security information to
902 * sock->inode->i_security. This hook may be used to update the
903 * sock->inode->i_security field with additional information that wasn't
904 * available when the inode was allocated.
905 * @sock contains the newly created socket structure.
906 * @family contains the requested protocol family.
907 * @type contains the requested communications type.
908 * @protocol contains the requested protocol.
909 * @kern set to 1 if a kernel socket.
911 * Check permission before socket protocol layer bind operation is
912 * performed and the socket @sock is bound to the address specified in the
913 * @address parameter.
914 * @sock contains the socket structure.
915 * @address contains the address to bind to.
916 * @addrlen contains the length of address.
917 * Return 0 if permission is granted.
919 * Check permission before socket protocol layer connect operation
920 * attempts to connect socket @sock to a remote address, @address.
921 * @sock contains the socket structure.
922 * @address contains the address of remote endpoint.
923 * @addrlen contains the length of address.
924 * Return 0 if permission is granted.
926 * Check permission before socket protocol layer listen operation.
927 * @sock contains the socket structure.
928 * @backlog contains the maximum length for the pending connection queue.
929 * Return 0 if permission is granted.
931 * Check permission before accepting a new connection. Note that the new
932 * socket, @newsock, has been created and some information copied to it,
933 * but the accept operation has not actually been performed.
934 * @sock contains the listening socket structure.
935 * @newsock contains the newly created server socket for connection.
936 * Return 0 if permission is granted.
938 * Check permission before transmitting a message to another socket.
939 * @sock contains the socket structure.
940 * @msg contains the message to be transmitted.
941 * @size contains the size of message.
942 * Return 0 if permission is granted.
944 * Check permission before receiving a message from a socket.
945 * @sock contains the socket structure.
946 * @msg contains the message structure.
947 * @size contains the size of message structure.
948 * @flags contains the operational flags.
949 * Return 0 if permission is granted.
950 * @socket_getsockname:
951 * Check permission before the local address (name) of the socket object
952 * @sock is retrieved.
953 * @sock contains the socket structure.
954 * Return 0 if permission is granted.
955 * @socket_getpeername:
956 * Check permission before the remote address (name) of a socket object
957 * @sock is retrieved.
958 * @sock contains the socket structure.
959 * Return 0 if permission is granted.
960 * @socket_getsockopt:
961 * Check permissions before retrieving the options associated with socket
963 * @sock contains the socket structure.
964 * @level contains the protocol level to retrieve option from.
965 * @optname contains the name of option to retrieve.
966 * Return 0 if permission is granted.
967 * @socket_setsockopt:
968 * Check permissions before setting the options associated with socket
970 * @sock contains the socket structure.
971 * @level contains the protocol level to set options for.
972 * @optname contains the name of the option to set.
973 * Return 0 if permission is granted.
975 * Checks permission before all or part of a connection on the socket
976 * @sock is shut down.
977 * @sock contains the socket structure.
978 * @how contains the flag indicating how future sends and receives are handled.
979 * Return 0 if permission is granted.
980 * @socket_sock_rcv_skb:
981 * Check permissions on incoming network packets. This hook is distinct
982 * from Netfilter's IP input hooks since it is the first time that the
983 * incoming sk_buff @skb has been associated with a particular socket, @sk.
984 * Must not sleep inside this hook because some callers hold spinlocks.
985 * @sk contains the sock (not socket) associated with the incoming sk_buff.
986 * @skb contains the incoming network data.
987 * @socket_getpeersec_stream:
988 * This hook allows the security module to provide peer socket security
989 * state for unix or connected tcp sockets to userspace via getsockopt
990 * SO_GETPEERSEC. For tcp sockets this can be meaningful if the
991 * socket is associated with an ipsec SA.
992 * @sock is the local socket.
993 * @optval userspace memory where the security state is to be copied.
994 * @optlen userspace int where the module should copy the actual length
995 * of the security state.
996 * @len as input is the maximum length to copy to userspace provided
998 * Return 0 if all is well, otherwise, typical getsockopt return
1000 * @socket_getpeersec_dgram:
1001 * This hook allows the security module to provide peer socket security
1002 * state for udp sockets on a per-packet basis to userspace via
1003 * getsockopt SO_GETPEERSEC. The application must first have indicated
1004 * the IP_PASSSEC option via getsockopt. It can then retrieve the
1005 * security state returned by this hook for a packet via the SCM_SECURITY
1006 * ancillary message type.
1007 * @skb is the skbuff for the packet being queried
1008 * @secdata is a pointer to a buffer in which to copy the security data
1009 * @seclen is the maximum length for @secdata
1010 * Return 0 on success, error on failure.
1011 * @sk_alloc_security:
1012 * Allocate and attach a security structure to the sk->sk_security field,
1013 * which is used to copy security attributes between local stream sockets.
1014 * @sk_free_security:
1015 * Deallocate security structure.
1016 * @sk_clone_security:
1017 * Clone/copy security structure.
1019 * Retrieve the LSM-specific secid for the sock to enable caching of network
1022 * Sets the socket's isec sid to the sock's sid.
1023 * @inet_conn_request:
1024 * Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
1026 * Sets the new child socket's sid to the openreq sid.
1027 * @inet_conn_established:
1028 * Sets the connection's peersid to the secmark on skb.
1029 * @req_classify_flow:
1030 * Sets the flow's sid to the openreq sid.
1032 * Check permissions prior to creating a new TUN device.
1033 * @tun_dev_post_create:
1034 * This hook allows a module to update or allocate a per-socket security
1036 * @sk contains the newly created sock structure.
1038 * Check permissions prior to attaching to a persistent TUN device. This
1039 * hook can also be used by the module to update any security state
1040 * associated with the TUN device's sock structure.
1041 * @sk contains the existing sock structure.
1043 * Security hooks for XFRM operations.
1045 * @xfrm_policy_alloc_security:
1046 * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
1047 * Database used by the XFRM system.
1048 * @sec_ctx contains the security context information being provided by
1049 * the user-level policy update program (e.g., setkey).
1050 * Allocate a security structure to the xp->security field; the security
1051 * field is initialized to NULL when the xfrm_policy is allocated.
1052 * Return 0 if operation was successful (memory to allocate, legal context)
1053 * @xfrm_policy_clone_security:
1054 * @old_ctx contains an existing xfrm_sec_ctx.
1055 * @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
1056 * Allocate a security structure in new_ctxp that contains the
1057 * information from the old_ctx structure.
1058 * Return 0 if operation was successful (memory to allocate).
1059 * @xfrm_policy_free_security:
1060 * @ctx contains the xfrm_sec_ctx
1061 * Deallocate xp->security.
1062 * @xfrm_policy_delete_security:
1063 * @ctx contains the xfrm_sec_ctx.
1064 * Authorize deletion of xp->security.
1065 * @xfrm_state_alloc_security:
1066 * @x contains the xfrm_state being added to the Security Association
1067 * Database by the XFRM system.
1068 * @sec_ctx contains the security context information being provided by
1069 * the user-level SA generation program (e.g., setkey or racoon).
1070 * @secid contains the secid from which to take the mls portion of the context.
1071 * Allocate a security structure to the x->security field; the security
1072 * field is initialized to NULL when the xfrm_state is allocated. Set the
1073 * context to correspond to either sec_ctx or polsec, with the mls portion
1074 * taken from secid in the latter case.
1075 * Return 0 if operation was successful (memory to allocate, legal context).
1076 * @xfrm_state_free_security:
1077 * @x contains the xfrm_state.
1078 * Deallocate x->security.
1079 * @xfrm_state_delete_security:
1080 * @x contains the xfrm_state.
1081 * Authorize deletion of x->security.
1082 * @xfrm_policy_lookup:
1083 * @ctx contains the xfrm_sec_ctx for which the access control is being
1085 * @fl_secid contains the flow security label that is used to authorize
1086 * access to the policy xp.
1087 * @dir contains the direction of the flow (input or output).
1088 * Check permission when a flow selects a xfrm_policy for processing
1089 * XFRMs on a packet. The hook is called when selecting either a
1090 * per-socket policy or a generic xfrm policy.
1091 * Return 0 if permission is granted, -ESRCH otherwise, or -errno
1093 * @xfrm_state_pol_flow_match:
1094 * @x contains the state to match.
1095 * @xp contains the policy to check for a match.
1096 * @fl contains the flow to check for a match.
1097 * Return 1 if there is a match.
1098 * @xfrm_decode_session:
1099 * @skb points to skb to decode.
1100 * @secid points to the flow key secid to set.
1101 * @ckall says if all xfrms used should be checked for same secid.
1102 * Return 0 if ckall is zero or all xfrms used have the same secid.
1104 * Security hooks affecting all Key Management operations
1107 * Permit allocation of a key and assign security data. Note that key does
1108 * not have a serial number assigned at this point.
1109 * @key points to the key.
1110 * @flags is the allocation flags
1111 * Return 0 if permission is granted, -ve error otherwise.
1113 * Notification of destruction; free security data.
1114 * @key points to the key.
1117 * See whether a specific operational right is granted to a process on a
1119 * @key_ref refers to the key (key pointer + possession attribute bit).
1120 * @cred points to the credentials to provide the context against which to
1121 * evaluate the security data on the key.
1122 * @perm describes the combination of permissions required of this key.
1123 * Return 1 if permission granted, 0 if permission denied and -ve it the
1124 * normal permissions model should be effected.
1126 * Get a textual representation of the security context attached to a key
1127 * for the purposes of honouring KEYCTL_GETSECURITY. This function
1128 * allocates the storage for the NUL-terminated string and the caller
1130 * @key points to the key to be queried.
1131 * @_buffer points to a pointer that should be set to point to the
1132 * resulting string (if no label or an error occurs).
1133 * Return the length of the string (including terminating NUL) or -ve if
1135 * May also return 0 (and a NULL buffer pointer) if there is no label.
1136 * @key_session_to_parent:
1137 * Forcibly assign the session keyring from a process to its parent
1139 * @cred: Pointer to process's credentials
1140 * @parent_cred: Pointer to parent process's credentials
1141 * @keyring: Proposed new session keyring
1142 * Return 0 if permission is granted, -ve error otherwise.
1144 * Security hooks affecting all System V IPC operations.
1147 * Check permissions for access to IPC
1148 * @ipcp contains the kernel IPC permission structure
1149 * @flag contains the desired (requested) permission set
1150 * Return 0 if permission is granted.
1152 * Get the secid associated with the ipc object.
1153 * @ipcp contains the kernel IPC permission structure.
1154 * @secid contains a pointer to the location where result will be saved.
1155 * In case of failure, @secid will be set to zero.
1157 * Security hooks for individual messages held in System V IPC message queues
1158 * @msg_msg_alloc_security:
1159 * Allocate and attach a security structure to the msg->security field.
1160 * The security field is initialized to NULL when the structure is first
1162 * @msg contains the message structure to be modified.
1163 * Return 0 if operation was successful and permission is granted.
1164 * @msg_msg_free_security:
1165 * Deallocate the security structure for this message.
1166 * @msg contains the message structure to be modified.
1168 * Security hooks for System V IPC Message Queues
1170 * @msg_queue_alloc_security:
1171 * Allocate and attach a security structure to the
1172 * msq->q_perm.security field. The security field is initialized to
1173 * NULL when the structure is first created.
1174 * @msq contains the message queue structure to be modified.
1175 * Return 0 if operation was successful and permission is granted.
1176 * @msg_queue_free_security:
1177 * Deallocate security structure for this message queue.
1178 * @msq contains the message queue structure to be modified.
1179 * @msg_queue_associate:
1180 * Check permission when a message queue is requested through the
1181 * msgget system call. This hook is only called when returning the
1182 * message queue identifier for an existing message queue, not when a
1183 * new message queue is created.
1184 * @msq contains the message queue to act upon.
1185 * @msqflg contains the operation control flags.
1186 * Return 0 if permission is granted.
1187 * @msg_queue_msgctl:
1188 * Check permission when a message control operation specified by @cmd
1189 * is to be performed on the message queue @msq.
1190 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
1191 * @msq contains the message queue to act upon. May be NULL.
1192 * @cmd contains the operation to be performed.
1193 * Return 0 if permission is granted.
1194 * @msg_queue_msgsnd:
1195 * Check permission before a message, @msg, is enqueued on the message
1197 * @msq contains the message queue to send message to.
1198 * @msg contains the message to be enqueued.
1199 * @msqflg contains operational flags.
1200 * Return 0 if permission is granted.
1201 * @msg_queue_msgrcv:
1202 * Check permission before a message, @msg, is removed from the message
1203 * queue, @msq. The @target task structure contains a pointer to the
1204 * process that will be receiving the message (not equal to the current
1205 * process when inline receives are being performed).
1206 * @msq contains the message queue to retrieve message from.
1207 * @msg contains the message destination.
1208 * @target contains the task structure for recipient process.
1209 * @type contains the type of message requested.
1210 * @mode contains the operational flags.
1211 * Return 0 if permission is granted.
1213 * Security hooks for System V Shared Memory Segments
1215 * @shm_alloc_security:
1216 * Allocate and attach a security structure to the shp->shm_perm.security
1217 * field. The security field is initialized to NULL when the structure is
1219 * @shp contains the shared memory structure to be modified.
1220 * Return 0 if operation was successful and permission is granted.
1221 * @shm_free_security:
1222 * Deallocate the security struct for this memory segment.
1223 * @shp contains the shared memory structure to be modified.
1225 * Check permission when a shared memory region is requested through the
1226 * shmget system call. This hook is only called when returning the shared
1227 * memory region identifier for an existing region, not when a new shared
1228 * memory region is created.
1229 * @shp contains the shared memory structure to be modified.
1230 * @shmflg contains the operation control flags.
1231 * Return 0 if permission is granted.
1233 * Check permission when a shared memory control operation specified by
1234 * @cmd is to be performed on the shared memory region @shp.
1235 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1236 * @shp contains shared memory structure to be modified.
1237 * @cmd contains the operation to be performed.
1238 * Return 0 if permission is granted.
1240 * Check permissions prior to allowing the shmat system call to attach the
1241 * shared memory segment @shp to the data segment of the calling process.
1242 * The attaching address is specified by @shmaddr.
1243 * @shp contains the shared memory structure to be modified.
1244 * @shmaddr contains the address to attach memory region to.
1245 * @shmflg contains the operational flags.
1246 * Return 0 if permission is granted.
1248 * Security hooks for System V Semaphores
1250 * @sem_alloc_security:
1251 * Allocate and attach a security structure to the sma->sem_perm.security
1252 * field. The security field is initialized to NULL when the structure is
1254 * @sma contains the semaphore structure
1255 * Return 0 if operation was successful and permission is granted.
1256 * @sem_free_security:
1257 * deallocate security struct for this semaphore
1258 * @sma contains the semaphore structure.
1260 * Check permission when a semaphore is requested through the semget
1261 * system call. This hook is only called when returning the semaphore
1262 * identifier for an existing semaphore, not when a new one must be
1264 * @sma contains the semaphore structure.
1265 * @semflg contains the operation control flags.
1266 * Return 0 if permission is granted.
1268 * Check permission when a semaphore operation specified by @cmd is to be
1269 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
1270 * IPC_INFO or SEM_INFO.
1271 * @sma contains the semaphore structure. May be NULL.
1272 * @cmd contains the operation to be performed.
1273 * Return 0 if permission is granted.
1275 * Check permissions before performing operations on members of the
1276 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1278 * @sma contains the semaphore structure.
1279 * @sops contains the operations to perform.
1280 * @nsops contains the number of operations to perform.
1281 * @alter contains the flag indicating whether changes are to be made.
1282 * Return 0 if permission is granted.
1284 * @ptrace_access_check:
1285 * Check permission before allowing the current process to trace the
1287 * Security modules may also want to perform a process tracing check
1288 * during an execve in the set_security or apply_creds hooks of
1289 * tracing check during an execve in the bprm_set_creds hook of
1290 * binprm_security_ops if the process is being traced and its security
1291 * attributes would be changed by the execve.
1292 * @child contains the task_struct structure for the target process.
1293 * @mode contains the PTRACE_MODE flags indicating the form of access.
1294 * Return 0 if permission is granted.
1296 * Check that the @parent process has sufficient permission to trace the
1297 * current process before allowing the current process to present itself
1298 * to the @parent process for tracing.
1299 * The parent process will still have to undergo the ptrace_access_check
1300 * checks before it is allowed to trace this one.
1301 * @parent contains the task_struct structure for debugger process.
1302 * Return 0 if permission is granted.
1304 * Get the @effective, @inheritable, and @permitted capability sets for
1305 * the @target process. The hook may also perform permission checking to
1306 * determine if the current process is allowed to see the capability sets
1307 * of the @target process.
1308 * @target contains the task_struct structure for target process.
1309 * @effective contains the effective capability set.
1310 * @inheritable contains the inheritable capability set.
1311 * @permitted contains the permitted capability set.
1312 * Return 0 if the capability sets were successfully obtained.
1314 * Set the @effective, @inheritable, and @permitted capability sets for
1315 * the current process.
1316 * @new contains the new credentials structure for target process.
1317 * @old contains the current credentials structure for target process.
1318 * @effective contains the effective capability set.
1319 * @inheritable contains the inheritable capability set.
1320 * @permitted contains the permitted capability set.
1321 * Return 0 and update @new if permission is granted.
1323 * Check whether the @tsk process has the @cap capability in the indicated
1325 * @tsk contains the task_struct for the process.
1326 * @cred contains the credentials to use.
1327 * @cap contains the capability <include/linux/capability.h>.
1328 * @audit: Whether to write an audit message or not
1329 * Return 0 if the capability is granted for @tsk.
1331 * Check permission before enabling or disabling process accounting. If
1332 * accounting is being enabled, then @file refers to the open file used to
1333 * store accounting records. If accounting is being disabled, then @file
1335 * @file contains the file structure for the accounting file (may be NULL).
1336 * Return 0 if permission is granted.
1338 * Check permission before accessing the @table sysctl variable in the
1339 * manner specified by @op.
1340 * @table contains the ctl_table structure for the sysctl variable.
1341 * @op contains the operation (001 = search, 002 = write, 004 = read).
1342 * Return 0 if permission is granted.
1344 * Check permission before accessing the kernel message ring or changing
1345 * logging to the console.
1346 * See the syslog(2) manual page for an explanation of the @type values.
1347 * @type contains the type of action.
1348 * @from_file indicates the context of action (if it came from /proc).
1349 * Return 0 if permission is granted.
1351 * Check permission to change the system time.
1352 * struct timespec and timezone are defined in include/linux/time.h
1353 * @ts contains new time
1354 * @tz contains new timezone
1355 * Return 0 if permission is granted.
1356 * @vm_enough_memory:
1357 * Check permissions for allocating a new virtual mapping.
1358 * @mm contains the mm struct it is being added to.
1359 * @pages contains the number of pages.
1360 * Return 0 if permission is granted.
1363 * Convert secid to security context.
1364 * @secid contains the security ID.
1365 * @secdata contains the pointer that stores the converted security context.
1367 * Convert security context to secid.
1368 * @secid contains the pointer to the generated security ID.
1369 * @secdata contains the security context.
1372 * Release the security context.
1373 * @secdata contains the security context.
1374 * @seclen contains the length of the security context.
1376 * Security hooks for Audit
1379 * Allocate and initialize an LSM audit rule structure.
1380 * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
1381 * @op contains the operator the rule uses.
1382 * @rulestr contains the context where the rule will be applied to.
1383 * @lsmrule contains a pointer to receive the result.
1384 * Return 0 if @lsmrule has been successfully set,
1385 * -EINVAL in case of an invalid rule.
1387 * @audit_rule_known:
1388 * Specifies whether given @rule contains any fields related to current LSM.
1389 * @rule contains the audit rule of interest.
1390 * Return 1 in case of relation found, 0 otherwise.
1392 * @audit_rule_match:
1393 * Determine if given @secid matches a rule previously approved
1394 * by @audit_rule_known.
1395 * @secid contains the security id in question.
1396 * @field contains the field which relates to current LSM.
1397 * @op contains the operator that will be used for matching.
1398 * @rule points to the audit rule that will be checked against.
1399 * @actx points to the audit context associated with the check.
1400 * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
1403 * Deallocate the LSM audit rule structure previously allocated by
1405 * @rule contains the allocated rule
1407 * @inode_notifysecctx:
1408 * Notify the security module of what the security context of an inode
1409 * should be. Initializes the incore security context managed by the
1410 * security module for this inode. Example usage: NFS client invokes
1411 * this hook to initialize the security context in its incore inode to the
1412 * value provided by the server for the file when the server returned the
1413 * file's attributes to the client.
1415 * Must be called with inode->i_mutex locked.
1417 * @inode we wish to set the security context of.
1418 * @ctx contains the string which we wish to set in the inode.
1419 * @ctxlen contains the length of @ctx.
1422 * Change the security context of an inode. Updates the
1423 * incore security context managed by the security module and invokes the
1424 * fs code as needed (via __vfs_setxattr_noperm) to update any backing
1425 * xattrs that represent the context. Example usage: NFS server invokes
1426 * this hook to change the security context in its incore inode and on the
1427 * backing filesystem to a value provided by the client on a SETATTR
1430 * Must be called with inode->i_mutex locked.
1432 * @dentry contains the inode we wish to set the security context of.
1433 * @ctx contains the string which we wish to set in the inode.
1434 * @ctxlen contains the length of @ctx.
1437 * Returns a string containing all relavent security context information
1439 * @inode we wish to set the security context of.
1440 * @ctx is a pointer in which to place the allocated security context.
1441 * @ctxlen points to the place to put the length of @ctx.
1442 * This is the main security structure.
1444 struct security_operations {
1445 char name[SECURITY_NAME_MAX + 1];
1447 int (*ptrace_access_check) (struct task_struct *child, unsigned int mode);
1448 int (*ptrace_traceme) (struct task_struct *parent);
1449 int (*capget) (struct task_struct *target,
1450 kernel_cap_t *effective,
1451 kernel_cap_t *inheritable, kernel_cap_t *permitted);
1452 int (*capset) (struct cred *new,
1453 const struct cred *old,
1454 const kernel_cap_t *effective,
1455 const kernel_cap_t *inheritable,
1456 const kernel_cap_t *permitted);
1457 int (*capable) (struct task_struct *tsk, const struct cred *cred,
1458 int cap, int audit);
1459 int (*acct) (struct file *file);
1460 int (*sysctl) (struct ctl_table *table, int op);
1461 int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
1462 int (*quota_on) (struct dentry *dentry);
1463 int (*syslog) (int type, bool from_file);
1464 int (*settime) (struct timespec *ts, struct timezone *tz);
1465 int (*vm_enough_memory) (struct mm_struct *mm, long pages);
1467 int (*bprm_set_creds) (struct linux_binprm *bprm);
1468 int (*bprm_check_security) (struct linux_binprm *bprm);
1469 int (*bprm_secureexec) (struct linux_binprm *bprm);
1470 void (*bprm_committing_creds) (struct linux_binprm *bprm);
1471 void (*bprm_committed_creds) (struct linux_binprm *bprm);
1473 int (*sb_alloc_security) (struct super_block *sb);
1474 void (*sb_free_security) (struct super_block *sb);
1475 int (*sb_copy_data) (char *orig, char *copy);
1476 int (*sb_kern_mount) (struct super_block *sb, int flags, void *data);
1477 int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
1478 int (*sb_statfs) (struct dentry *dentry);
1479 int (*sb_mount) (char *dev_name, struct path *path,
1480 char *type, unsigned long flags, void *data);
1481 int (*sb_umount) (struct vfsmount *mnt, int flags);
1482 void (*sb_umount_close) (struct vfsmount *mnt);
1483 void (*sb_umount_busy) (struct vfsmount *mnt);
1484 void (*sb_post_remount) (struct vfsmount *mnt,
1485 unsigned long flags, void *data);
1486 void (*sb_post_addmount) (struct vfsmount *mnt,
1487 struct path *mountpoint);
1488 int (*sb_pivotroot) (struct path *old_path,
1489 struct path *new_path);
1490 void (*sb_post_pivotroot) (struct path *old_path,
1491 struct path *new_path);
1492 int (*sb_set_mnt_opts) (struct super_block *sb,
1493 struct security_mnt_opts *opts);
1494 void (*sb_clone_mnt_opts) (const struct super_block *oldsb,
1495 struct super_block *newsb);
1496 int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
1498 #ifdef CONFIG_SECURITY_PATH
1499 int (*path_unlink) (struct path *dir, struct dentry *dentry);
1500 int (*path_mkdir) (struct path *dir, struct dentry *dentry, int mode);
1501 int (*path_rmdir) (struct path *dir, struct dentry *dentry);
1502 int (*path_mknod) (struct path *dir, struct dentry *dentry, int mode,
1504 int (*path_truncate) (struct path *path, loff_t length,
1505 unsigned int time_attrs);
1506 int (*path_symlink) (struct path *dir, struct dentry *dentry,
1507 const char *old_name);
1508 int (*path_link) (struct dentry *old_dentry, struct path *new_dir,
1509 struct dentry *new_dentry);
1510 int (*path_rename) (struct path *old_dir, struct dentry *old_dentry,
1511 struct path *new_dir, struct dentry *new_dentry);
1512 int (*path_chmod) (struct dentry *dentry, struct vfsmount *mnt,
1514 int (*path_chown) (struct path *path, uid_t uid, gid_t gid);
1515 int (*path_chroot) (struct path *path);
1518 int (*inode_alloc_security) (struct inode *inode);
1519 void (*inode_free_security) (struct inode *inode);
1520 int (*inode_init_security) (struct inode *inode, struct inode *dir,
1521 char **name, void **value, size_t *len);
1522 int (*inode_create) (struct inode *dir,
1523 struct dentry *dentry, int mode);
1524 int (*inode_link) (struct dentry *old_dentry,
1525 struct inode *dir, struct dentry *new_dentry);
1526 int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
1527 int (*inode_symlink) (struct inode *dir,
1528 struct dentry *dentry, const char *old_name);
1529 int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, int mode);
1530 int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
1531 int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
1532 int mode, dev_t dev);
1533 int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
1534 struct inode *new_dir, struct dentry *new_dentry);
1535 int (*inode_readlink) (struct dentry *dentry);
1536 int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
1537 int (*inode_permission) (struct inode *inode, int mask);
1538 int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
1539 int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
1540 void (*inode_delete) (struct inode *inode);
1541 int (*inode_setxattr) (struct dentry *dentry, const char *name,
1542 const void *value, size_t size, int flags);
1543 void (*inode_post_setxattr) (struct dentry *dentry, const char *name,
1544 const void *value, size_t size, int flags);
1545 int (*inode_getxattr) (struct dentry *dentry, const char *name);
1546 int (*inode_listxattr) (struct dentry *dentry);
1547 int (*inode_removexattr) (struct dentry *dentry, const char *name);
1548 int (*inode_need_killpriv) (struct dentry *dentry);
1549 int (*inode_killpriv) (struct dentry *dentry);
1550 int (*inode_getsecurity) (const struct inode *inode, const char *name, void **buffer, bool alloc);
1551 int (*inode_setsecurity) (struct inode *inode, const char *name, const void *value, size_t size, int flags);
1552 int (*inode_listsecurity) (struct inode *inode, char *buffer, size_t buffer_size);
1553 void (*inode_getsecid) (const struct inode *inode, u32 *secid);
1555 int (*file_permission) (struct file *file, int mask);
1556 int (*file_alloc_security) (struct file *file);
1557 void (*file_free_security) (struct file *file);
1558 int (*file_ioctl) (struct file *file, unsigned int cmd,
1560 int (*file_mmap) (struct file *file,
1561 unsigned long reqprot, unsigned long prot,
1562 unsigned long flags, unsigned long addr,
1563 unsigned long addr_only);
1564 int (*file_mprotect) (struct vm_area_struct *vma,
1565 unsigned long reqprot,
1566 unsigned long prot);
1567 int (*file_lock) (struct file *file, unsigned int cmd);
1568 int (*file_fcntl) (struct file *file, unsigned int cmd,
1570 int (*file_set_fowner) (struct file *file);
1571 int (*file_send_sigiotask) (struct task_struct *tsk,
1572 struct fown_struct *fown, int sig);
1573 int (*file_receive) (struct file *file);
1574 int (*dentry_open) (struct file *file, const struct cred *cred);
1576 int (*task_create) (unsigned long clone_flags);
1577 int (*cred_alloc_blank) (struct cred *cred, gfp_t gfp);
1578 void (*cred_free) (struct cred *cred);
1579 int (*cred_prepare)(struct cred *new, const struct cred *old,
1581 void (*cred_commit)(struct cred *new, const struct cred *old);
1582 void (*cred_transfer)(struct cred *new, const struct cred *old);
1583 int (*kernel_act_as)(struct cred *new, u32 secid);
1584 int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
1585 int (*kernel_module_request)(char *kmod_name);
1586 int (*task_setuid) (uid_t id0, uid_t id1, uid_t id2, int flags);
1587 int (*task_fix_setuid) (struct cred *new, const struct cred *old,
1589 int (*task_setgid) (gid_t id0, gid_t id1, gid_t id2, int flags);
1590 int (*task_setpgid) (struct task_struct *p, pid_t pgid);
1591 int (*task_getpgid) (struct task_struct *p);
1592 int (*task_getsid) (struct task_struct *p);
1593 void (*task_getsecid) (struct task_struct *p, u32 *secid);
1594 int (*task_setgroups) (struct group_info *group_info);
1595 int (*task_setnice) (struct task_struct *p, int nice);
1596 int (*task_setioprio) (struct task_struct *p, int ioprio);
1597 int (*task_getioprio) (struct task_struct *p);
1598 int (*task_setrlimit) (unsigned int resource, struct rlimit *new_rlim);
1599 int (*task_setscheduler) (struct task_struct *p, int policy,
1600 struct sched_param *lp);
1601 int (*task_getscheduler) (struct task_struct *p);
1602 int (*task_movememory) (struct task_struct *p);
1603 int (*task_kill) (struct task_struct *p,
1604 struct siginfo *info, int sig, u32 secid);
1605 int (*task_wait) (struct task_struct *p);
1606 int (*task_prctl) (int option, unsigned long arg2,
1607 unsigned long arg3, unsigned long arg4,
1608 unsigned long arg5);
1609 void (*task_to_inode) (struct task_struct *p, struct inode *inode);
1611 int (*ipc_permission) (struct kern_ipc_perm *ipcp, short flag);
1612 void (*ipc_getsecid) (struct kern_ipc_perm *ipcp, u32 *secid);
1614 int (*msg_msg_alloc_security) (struct msg_msg *msg);
1615 void (*msg_msg_free_security) (struct msg_msg *msg);
1617 int (*msg_queue_alloc_security) (struct msg_queue *msq);
1618 void (*msg_queue_free_security) (struct msg_queue *msq);
1619 int (*msg_queue_associate) (struct msg_queue *msq, int msqflg);
1620 int (*msg_queue_msgctl) (struct msg_queue *msq, int cmd);
1621 int (*msg_queue_msgsnd) (struct msg_queue *msq,
1622 struct msg_msg *msg, int msqflg);
1623 int (*msg_queue_msgrcv) (struct msg_queue *msq,
1624 struct msg_msg *msg,
1625 struct task_struct *target,
1626 long type, int mode);
1628 int (*shm_alloc_security) (struct shmid_kernel *shp);
1629 void (*shm_free_security) (struct shmid_kernel *shp);
1630 int (*shm_associate) (struct shmid_kernel *shp, int shmflg);
1631 int (*shm_shmctl) (struct shmid_kernel *shp, int cmd);
1632 int (*shm_shmat) (struct shmid_kernel *shp,
1633 char __user *shmaddr, int shmflg);
1635 int (*sem_alloc_security) (struct sem_array *sma);
1636 void (*sem_free_security) (struct sem_array *sma);
1637 int (*sem_associate) (struct sem_array *sma, int semflg);
1638 int (*sem_semctl) (struct sem_array *sma, int cmd);
1639 int (*sem_semop) (struct sem_array *sma,
1640 struct sembuf *sops, unsigned nsops, int alter);
1642 int (*netlink_send) (struct sock *sk, struct sk_buff *skb);
1643 int (*netlink_recv) (struct sk_buff *skb, int cap);
1645 void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1647 int (*getprocattr) (struct task_struct *p, char *name, char **value);
1648 int (*setprocattr) (struct task_struct *p, char *name, void *value, size_t size);
1649 int (*secid_to_secctx) (u32 secid, char **secdata, u32 *seclen);
1650 int (*secctx_to_secid) (const char *secdata, u32 seclen, u32 *secid);
1651 void (*release_secctx) (char *secdata, u32 seclen);
1653 int (*inode_notifysecctx)(struct inode *inode, void *ctx, u32 ctxlen);
1654 int (*inode_setsecctx)(struct dentry *dentry, void *ctx, u32 ctxlen);
1655 int (*inode_getsecctx)(struct inode *inode, void **ctx, u32 *ctxlen);
1657 #ifdef CONFIG_SECURITY_NETWORK
1658 int (*unix_stream_connect) (struct socket *sock,
1659 struct socket *other, struct sock *newsk);
1660 int (*unix_may_send) (struct socket *sock, struct socket *other);
1662 int (*socket_create) (int family, int type, int protocol, int kern);
1663 int (*socket_post_create) (struct socket *sock, int family,
1664 int type, int protocol, int kern);
1665 int (*socket_bind) (struct socket *sock,
1666 struct sockaddr *address, int addrlen);
1667 int (*socket_connect) (struct socket *sock,
1668 struct sockaddr *address, int addrlen);
1669 int (*socket_listen) (struct socket *sock, int backlog);
1670 int (*socket_accept) (struct socket *sock, struct socket *newsock);
1671 int (*socket_sendmsg) (struct socket *sock,
1672 struct msghdr *msg, int size);
1673 int (*socket_recvmsg) (struct socket *sock,
1674 struct msghdr *msg, int size, int flags);
1675 int (*socket_getsockname) (struct socket *sock);
1676 int (*socket_getpeername) (struct socket *sock);
1677 int (*socket_getsockopt) (struct socket *sock, int level, int optname);
1678 int (*socket_setsockopt) (struct socket *sock, int level, int optname);
1679 int (*socket_shutdown) (struct socket *sock, int how);
1680 int (*socket_sock_rcv_skb) (struct sock *sk, struct sk_buff *skb);
1681 int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
1682 int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
1683 int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
1684 void (*sk_free_security) (struct sock *sk);
1685 void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
1686 void (*sk_getsecid) (struct sock *sk, u32 *secid);
1687 void (*sock_graft) (struct sock *sk, struct socket *parent);
1688 int (*inet_conn_request) (struct sock *sk, struct sk_buff *skb,
1689 struct request_sock *req);
1690 void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req);
1691 void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb);
1692 void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
1693 int (*tun_dev_create)(void);
1694 void (*tun_dev_post_create)(struct sock *sk);
1695 int (*tun_dev_attach)(struct sock *sk);
1696 #endif /* CONFIG_SECURITY_NETWORK */
1698 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1699 int (*xfrm_policy_alloc_security) (struct xfrm_sec_ctx **ctxp,
1700 struct xfrm_user_sec_ctx *sec_ctx);
1701 int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
1702 void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
1703 int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
1704 int (*xfrm_state_alloc_security) (struct xfrm_state *x,
1705 struct xfrm_user_sec_ctx *sec_ctx,
1707 void (*xfrm_state_free_security) (struct xfrm_state *x);
1708 int (*xfrm_state_delete_security) (struct xfrm_state *x);
1709 int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1710 int (*xfrm_state_pol_flow_match) (struct xfrm_state *x,
1711 struct xfrm_policy *xp,
1713 int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall);
1714 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1716 /* key management security hooks */
1718 int (*key_alloc) (struct key *key, const struct cred *cred, unsigned long flags);
1719 void (*key_free) (struct key *key);
1720 int (*key_permission) (key_ref_t key_ref,
1721 const struct cred *cred,
1723 int (*key_getsecurity)(struct key *key, char **_buffer);
1724 int (*key_session_to_parent)(const struct cred *cred,
1725 const struct cred *parent_cred,
1727 #endif /* CONFIG_KEYS */
1730 int (*audit_rule_init) (u32 field, u32 op, char *rulestr, void **lsmrule);
1731 int (*audit_rule_known) (struct audit_krule *krule);
1732 int (*audit_rule_match) (u32 secid, u32 field, u32 op, void *lsmrule,
1733 struct audit_context *actx);
1734 void (*audit_rule_free) (void *lsmrule);
1735 #endif /* CONFIG_AUDIT */
1739 extern int security_init(void);
1740 extern int security_module_enable(struct security_operations *ops);
1741 extern int register_security(struct security_operations *ops);
1743 /* Security operations */
1744 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
1745 int security_ptrace_traceme(struct task_struct *parent);
1746 int security_capget(struct task_struct *target,
1747 kernel_cap_t *effective,
1748 kernel_cap_t *inheritable,
1749 kernel_cap_t *permitted);
1750 int security_capset(struct cred *new, const struct cred *old,
1751 const kernel_cap_t *effective,
1752 const kernel_cap_t *inheritable,
1753 const kernel_cap_t *permitted);
1754 int security_capable(int cap);
1755 int security_real_capable(struct task_struct *tsk, int cap);
1756 int security_real_capable_noaudit(struct task_struct *tsk, int cap);
1757 int security_acct(struct file *file);
1758 int security_sysctl(struct ctl_table *table, int op);
1759 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
1760 int security_quota_on(struct dentry *dentry);
1761 int security_syslog(int type, bool from_file);
1762 int security_settime(struct timespec *ts, struct timezone *tz);
1763 int security_vm_enough_memory(long pages);
1764 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
1765 int security_vm_enough_memory_kern(long pages);
1766 int security_bprm_set_creds(struct linux_binprm *bprm);
1767 int security_bprm_check(struct linux_binprm *bprm);
1768 void security_bprm_committing_creds(struct linux_binprm *bprm);
1769 void security_bprm_committed_creds(struct linux_binprm *bprm);
1770 int security_bprm_secureexec(struct linux_binprm *bprm);
1771 int security_sb_alloc(struct super_block *sb);
1772 void security_sb_free(struct super_block *sb);
1773 int security_sb_copy_data(char *orig, char *copy);
1774 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
1775 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
1776 int security_sb_statfs(struct dentry *dentry);
1777 int security_sb_mount(char *dev_name, struct path *path,
1778 char *type, unsigned long flags, void *data);
1779 int security_sb_umount(struct vfsmount *mnt, int flags);
1780 void security_sb_umount_close(struct vfsmount *mnt);
1781 void security_sb_umount_busy(struct vfsmount *mnt);
1782 void security_sb_post_remount(struct vfsmount *mnt, unsigned long flags, void *data);
1783 void security_sb_post_addmount(struct vfsmount *mnt, struct path *mountpoint);
1784 int security_sb_pivotroot(struct path *old_path, struct path *new_path);
1785 void security_sb_post_pivotroot(struct path *old_path, struct path *new_path);
1786 int security_sb_set_mnt_opts(struct super_block *sb, struct security_mnt_opts *opts);
1787 void security_sb_clone_mnt_opts(const struct super_block *oldsb,
1788 struct super_block *newsb);
1789 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
1791 int security_inode_alloc(struct inode *inode);
1792 void security_inode_free(struct inode *inode);
1793 int security_inode_init_security(struct inode *inode, struct inode *dir,
1794 char **name, void **value, size_t *len);
1795 int security_inode_create(struct inode *dir, struct dentry *dentry, int mode);
1796 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1797 struct dentry *new_dentry);
1798 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
1799 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
1800 const char *old_name);
1801 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode);
1802 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
1803 int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev);
1804 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
1805 struct inode *new_dir, struct dentry *new_dentry);
1806 int security_inode_readlink(struct dentry *dentry);
1807 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
1808 int security_inode_permission(struct inode *inode, int mask);
1809 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
1810 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
1811 void security_inode_delete(struct inode *inode);
1812 int security_inode_setxattr(struct dentry *dentry, const char *name,
1813 const void *value, size_t size, int flags);
1814 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1815 const void *value, size_t size, int flags);
1816 int security_inode_getxattr(struct dentry *dentry, const char *name);
1817 int security_inode_listxattr(struct dentry *dentry);
1818 int security_inode_removexattr(struct dentry *dentry, const char *name);
1819 int security_inode_need_killpriv(struct dentry *dentry);
1820 int security_inode_killpriv(struct dentry *dentry);
1821 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
1822 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1823 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
1824 void security_inode_getsecid(const struct inode *inode, u32 *secid);
1825 int security_file_permission(struct file *file, int mask);
1826 int security_file_alloc(struct file *file);
1827 void security_file_free(struct file *file);
1828 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
1829 int security_file_mmap(struct file *file, unsigned long reqprot,
1830 unsigned long prot, unsigned long flags,
1831 unsigned long addr, unsigned long addr_only);
1832 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1833 unsigned long prot);
1834 int security_file_lock(struct file *file, unsigned int cmd);
1835 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
1836 int security_file_set_fowner(struct file *file);
1837 int security_file_send_sigiotask(struct task_struct *tsk,
1838 struct fown_struct *fown, int sig);
1839 int security_file_receive(struct file *file);
1840 int security_dentry_open(struct file *file, const struct cred *cred);
1841 int security_task_create(unsigned long clone_flags);
1842 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
1843 void security_cred_free(struct cred *cred);
1844 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
1845 void security_commit_creds(struct cred *new, const struct cred *old);
1846 void security_transfer_creds(struct cred *new, const struct cred *old);
1847 int security_kernel_act_as(struct cred *new, u32 secid);
1848 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
1849 int security_kernel_module_request(char *kmod_name);
1850 int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags);
1851 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1853 int security_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags);
1854 int security_task_setpgid(struct task_struct *p, pid_t pgid);
1855 int security_task_getpgid(struct task_struct *p);
1856 int security_task_getsid(struct task_struct *p);
1857 void security_task_getsecid(struct task_struct *p, u32 *secid);
1858 int security_task_setgroups(struct group_info *group_info);
1859 int security_task_setnice(struct task_struct *p, int nice);
1860 int security_task_setioprio(struct task_struct *p, int ioprio);
1861 int security_task_getioprio(struct task_struct *p);
1862 int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim);
1863 int security_task_setscheduler(struct task_struct *p,
1864 int policy, struct sched_param *lp);
1865 int security_task_getscheduler(struct task_struct *p);
1866 int security_task_movememory(struct task_struct *p);
1867 int security_task_kill(struct task_struct *p, struct siginfo *info,
1868 int sig, u32 secid);
1869 int security_task_wait(struct task_struct *p);
1870 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1871 unsigned long arg4, unsigned long arg5);
1872 void security_task_to_inode(struct task_struct *p, struct inode *inode);
1873 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
1874 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
1875 int security_msg_msg_alloc(struct msg_msg *msg);
1876 void security_msg_msg_free(struct msg_msg *msg);
1877 int security_msg_queue_alloc(struct msg_queue *msq);
1878 void security_msg_queue_free(struct msg_queue *msq);
1879 int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
1880 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
1881 int security_msg_queue_msgsnd(struct msg_queue *msq,
1882 struct msg_msg *msg, int msqflg);
1883 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1884 struct task_struct *target, long type, int mode);
1885 int security_shm_alloc(struct shmid_kernel *shp);
1886 void security_shm_free(struct shmid_kernel *shp);
1887 int security_shm_associate(struct shmid_kernel *shp, int shmflg);
1888 int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
1889 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
1890 int security_sem_alloc(struct sem_array *sma);
1891 void security_sem_free(struct sem_array *sma);
1892 int security_sem_associate(struct sem_array *sma, int semflg);
1893 int security_sem_semctl(struct sem_array *sma, int cmd);
1894 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1895 unsigned nsops, int alter);
1896 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
1897 int security_getprocattr(struct task_struct *p, char *name, char **value);
1898 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
1899 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
1900 int security_netlink_recv(struct sk_buff *skb, int cap);
1901 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
1902 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
1903 void security_release_secctx(char *secdata, u32 seclen);
1905 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
1906 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
1907 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
1908 #else /* CONFIG_SECURITY */
1909 struct security_mnt_opts {
1912 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
1916 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
1921 * This is the default capabilities functionality. Most of these functions
1922 * are just stubbed out, but a few must call the proper capable code.
1925 static inline int security_init(void)
1930 static inline int security_ptrace_access_check(struct task_struct *child,
1933 return cap_ptrace_access_check(child, mode);
1936 static inline int security_ptrace_traceme(struct task_struct *parent)
1938 return cap_ptrace_traceme(parent);
1941 static inline int security_capget(struct task_struct *target,
1942 kernel_cap_t *effective,
1943 kernel_cap_t *inheritable,
1944 kernel_cap_t *permitted)
1946 return cap_capget(target, effective, inheritable, permitted);
1949 static inline int security_capset(struct cred *new,
1950 const struct cred *old,
1951 const kernel_cap_t *effective,
1952 const kernel_cap_t *inheritable,
1953 const kernel_cap_t *permitted)
1955 return cap_capset(new, old, effective, inheritable, permitted);
1958 static inline int security_capable(int cap)
1960 return cap_capable(current, current_cred(), cap, SECURITY_CAP_AUDIT);
1963 static inline int security_real_capable(struct task_struct *tsk, int cap)
1968 ret = cap_capable(tsk, __task_cred(tsk), cap, SECURITY_CAP_AUDIT);
1974 int security_real_capable_noaudit(struct task_struct *tsk, int cap)
1979 ret = cap_capable(tsk, __task_cred(tsk), cap,
1980 SECURITY_CAP_NOAUDIT);
1985 static inline int security_acct(struct file *file)
1990 static inline int security_sysctl(struct ctl_table *table, int op)
1995 static inline int security_quotactl(int cmds, int type, int id,
1996 struct super_block *sb)
2001 static inline int security_quota_on(struct dentry *dentry)
2006 static inline int security_syslog(int type, bool from_file)
2008 return cap_syslog(type, from_file);
2011 static inline int security_settime(struct timespec *ts, struct timezone *tz)
2013 return cap_settime(ts, tz);
2016 static inline int security_vm_enough_memory(long pages)
2018 WARN_ON(current->mm == NULL);
2019 return cap_vm_enough_memory(current->mm, pages);
2022 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
2024 WARN_ON(mm == NULL);
2025 return cap_vm_enough_memory(mm, pages);
2028 static inline int security_vm_enough_memory_kern(long pages)
2030 /* If current->mm is a kernel thread then we will pass NULL,
2031 for this specific case that is fine */
2032 return cap_vm_enough_memory(current->mm, pages);
2035 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
2037 return cap_bprm_set_creds(bprm);
2040 static inline int security_bprm_check(struct linux_binprm *bprm)
2045 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
2049 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
2053 static inline int security_bprm_secureexec(struct linux_binprm *bprm)
2055 return cap_bprm_secureexec(bprm);
2058 static inline int security_sb_alloc(struct super_block *sb)
2063 static inline void security_sb_free(struct super_block *sb)
2066 static inline int security_sb_copy_data(char *orig, char *copy)
2071 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
2076 static inline int security_sb_show_options(struct seq_file *m,
2077 struct super_block *sb)
2082 static inline int security_sb_statfs(struct dentry *dentry)
2087 static inline int security_sb_mount(char *dev_name, struct path *path,
2088 char *type, unsigned long flags,
2094 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
2099 static inline void security_sb_umount_close(struct vfsmount *mnt)
2102 static inline void security_sb_umount_busy(struct vfsmount *mnt)
2105 static inline void security_sb_post_remount(struct vfsmount *mnt,
2106 unsigned long flags, void *data)
2109 static inline void security_sb_post_addmount(struct vfsmount *mnt,
2110 struct path *mountpoint)
2113 static inline int security_sb_pivotroot(struct path *old_path,
2114 struct path *new_path)
2119 static inline void security_sb_post_pivotroot(struct path *old_path,
2120 struct path *new_path)
2123 static inline int security_sb_set_mnt_opts(struct super_block *sb,
2124 struct security_mnt_opts *opts)
2129 static inline void security_sb_clone_mnt_opts(const struct super_block *oldsb,
2130 struct super_block *newsb)
2133 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
2138 static inline int security_inode_alloc(struct inode *inode)
2143 static inline void security_inode_free(struct inode *inode)
2146 static inline int security_inode_init_security(struct inode *inode,
2155 static inline int security_inode_create(struct inode *dir,
2156 struct dentry *dentry,
2162 static inline int security_inode_link(struct dentry *old_dentry,
2164 struct dentry *new_dentry)
2169 static inline int security_inode_unlink(struct inode *dir,
2170 struct dentry *dentry)
2175 static inline int security_inode_symlink(struct inode *dir,
2176 struct dentry *dentry,
2177 const char *old_name)
2182 static inline int security_inode_mkdir(struct inode *dir,
2183 struct dentry *dentry,
2189 static inline int security_inode_rmdir(struct inode *dir,
2190 struct dentry *dentry)
2195 static inline int security_inode_mknod(struct inode *dir,
2196 struct dentry *dentry,
2197 int mode, dev_t dev)
2202 static inline int security_inode_rename(struct inode *old_dir,
2203 struct dentry *old_dentry,
2204 struct inode *new_dir,
2205 struct dentry *new_dentry)
2210 static inline int security_inode_readlink(struct dentry *dentry)
2215 static inline int security_inode_follow_link(struct dentry *dentry,
2216 struct nameidata *nd)
2221 static inline int security_inode_permission(struct inode *inode, int mask)
2226 static inline int security_inode_setattr(struct dentry *dentry,
2232 static inline int security_inode_getattr(struct vfsmount *mnt,
2233 struct dentry *dentry)
2238 static inline void security_inode_delete(struct inode *inode)
2241 static inline int security_inode_setxattr(struct dentry *dentry,
2242 const char *name, const void *value, size_t size, int flags)
2244 return cap_inode_setxattr(dentry, name, value, size, flags);
2247 static inline void security_inode_post_setxattr(struct dentry *dentry,
2248 const char *name, const void *value, size_t size, int flags)
2251 static inline int security_inode_getxattr(struct dentry *dentry,
2257 static inline int security_inode_listxattr(struct dentry *dentry)
2262 static inline int security_inode_removexattr(struct dentry *dentry,
2265 return cap_inode_removexattr(dentry, name);
2268 static inline int security_inode_need_killpriv(struct dentry *dentry)
2270 return cap_inode_need_killpriv(dentry);
2273 static inline int security_inode_killpriv(struct dentry *dentry)
2275 return cap_inode_killpriv(dentry);
2278 static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
2283 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
2288 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
2293 static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
2298 static inline int security_file_permission(struct file *file, int mask)
2303 static inline int security_file_alloc(struct file *file)
2308 static inline void security_file_free(struct file *file)
2311 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
2317 static inline int security_file_mmap(struct file *file, unsigned long reqprot,
2319 unsigned long flags,
2321 unsigned long addr_only)
2323 return cap_file_mmap(file, reqprot, prot, flags, addr, addr_only);
2326 static inline int security_file_mprotect(struct vm_area_struct *vma,
2327 unsigned long reqprot,
2333 static inline int security_file_lock(struct file *file, unsigned int cmd)
2338 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
2344 static inline int security_file_set_fowner(struct file *file)
2349 static inline int security_file_send_sigiotask(struct task_struct *tsk,
2350 struct fown_struct *fown,
2356 static inline int security_file_receive(struct file *file)
2361 static inline int security_dentry_open(struct file *file,
2362 const struct cred *cred)
2367 static inline int security_task_create(unsigned long clone_flags)
2372 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
2377 static inline void security_cred_free(struct cred *cred)
2380 static inline int security_prepare_creds(struct cred *new,
2381 const struct cred *old,
2387 static inline void security_commit_creds(struct cred *new,
2388 const struct cred *old)
2392 static inline void security_transfer_creds(struct cred *new,
2393 const struct cred *old)
2397 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
2402 static inline int security_kernel_create_files_as(struct cred *cred,
2403 struct inode *inode)
2408 static inline int security_kernel_module_request(char *kmod_name)
2413 static inline int security_task_setuid(uid_t id0, uid_t id1, uid_t id2,
2419 static inline int security_task_fix_setuid(struct cred *new,
2420 const struct cred *old,
2423 return cap_task_fix_setuid(new, old, flags);
2426 static inline int security_task_setgid(gid_t id0, gid_t id1, gid_t id2,
2432 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
2437 static inline int security_task_getpgid(struct task_struct *p)
2442 static inline int security_task_getsid(struct task_struct *p)
2447 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
2452 static inline int security_task_setgroups(struct group_info *group_info)
2457 static inline int security_task_setnice(struct task_struct *p, int nice)
2459 return cap_task_setnice(p, nice);
2462 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
2464 return cap_task_setioprio(p, ioprio);
2467 static inline int security_task_getioprio(struct task_struct *p)
2472 static inline int security_task_setrlimit(unsigned int resource,
2473 struct rlimit *new_rlim)
2478 static inline int security_task_setscheduler(struct task_struct *p,
2480 struct sched_param *lp)
2482 return cap_task_setscheduler(p, policy, lp);
2485 static inline int security_task_getscheduler(struct task_struct *p)
2490 static inline int security_task_movememory(struct task_struct *p)
2495 static inline int security_task_kill(struct task_struct *p,
2496 struct siginfo *info, int sig,
2502 static inline int security_task_wait(struct task_struct *p)
2507 static inline int security_task_prctl(int option, unsigned long arg2,
2512 return cap_task_prctl(option, arg2, arg3, arg3, arg5);
2515 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
2518 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
2524 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
2529 static inline int security_msg_msg_alloc(struct msg_msg *msg)
2534 static inline void security_msg_msg_free(struct msg_msg *msg)
2537 static inline int security_msg_queue_alloc(struct msg_queue *msq)
2542 static inline void security_msg_queue_free(struct msg_queue *msq)
2545 static inline int security_msg_queue_associate(struct msg_queue *msq,
2551 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
2556 static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
2557 struct msg_msg *msg, int msqflg)
2562 static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
2563 struct msg_msg *msg,
2564 struct task_struct *target,
2565 long type, int mode)
2570 static inline int security_shm_alloc(struct shmid_kernel *shp)
2575 static inline void security_shm_free(struct shmid_kernel *shp)
2578 static inline int security_shm_associate(struct shmid_kernel *shp,
2584 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
2589 static inline int security_shm_shmat(struct shmid_kernel *shp,
2590 char __user *shmaddr, int shmflg)
2595 static inline int security_sem_alloc(struct sem_array *sma)
2600 static inline void security_sem_free(struct sem_array *sma)
2603 static inline int security_sem_associate(struct sem_array *sma, int semflg)
2608 static inline int security_sem_semctl(struct sem_array *sma, int cmd)
2613 static inline int security_sem_semop(struct sem_array *sma,
2614 struct sembuf *sops, unsigned nsops,
2620 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
2623 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
2628 static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2633 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
2635 return cap_netlink_send(sk, skb);
2638 static inline int security_netlink_recv(struct sk_buff *skb, int cap)
2640 return cap_netlink_recv(skb, cap);
2643 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2648 static inline int security_secctx_to_secid(const char *secdata,
2655 static inline void security_release_secctx(char *secdata, u32 seclen)
2659 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
2663 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
2667 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
2671 #endif /* CONFIG_SECURITY */
2673 #ifdef CONFIG_SECURITY_NETWORK
2675 int security_unix_stream_connect(struct socket *sock, struct socket *other,
2676 struct sock *newsk);
2677 int security_unix_may_send(struct socket *sock, struct socket *other);
2678 int security_socket_create(int family, int type, int protocol, int kern);
2679 int security_socket_post_create(struct socket *sock, int family,
2680 int type, int protocol, int kern);
2681 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
2682 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
2683 int security_socket_listen(struct socket *sock, int backlog);
2684 int security_socket_accept(struct socket *sock, struct socket *newsock);
2685 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
2686 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2687 int size, int flags);
2688 int security_socket_getsockname(struct socket *sock);
2689 int security_socket_getpeername(struct socket *sock);
2690 int security_socket_getsockopt(struct socket *sock, int level, int optname);
2691 int security_socket_setsockopt(struct socket *sock, int level, int optname);
2692 int security_socket_shutdown(struct socket *sock, int how);
2693 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
2694 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2695 int __user *optlen, unsigned len);
2696 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
2697 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
2698 void security_sk_free(struct sock *sk);
2699 void security_sk_clone(const struct sock *sk, struct sock *newsk);
2700 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
2701 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
2702 void security_sock_graft(struct sock*sk, struct socket *parent);
2703 int security_inet_conn_request(struct sock *sk,
2704 struct sk_buff *skb, struct request_sock *req);
2705 void security_inet_csk_clone(struct sock *newsk,
2706 const struct request_sock *req);
2707 void security_inet_conn_established(struct sock *sk,
2708 struct sk_buff *skb);
2709 int security_tun_dev_create(void);
2710 void security_tun_dev_post_create(struct sock *sk);
2711 int security_tun_dev_attach(struct sock *sk);
2713 #else /* CONFIG_SECURITY_NETWORK */
2714 static inline int security_unix_stream_connect(struct socket *sock,
2715 struct socket *other,
2721 static inline int security_unix_may_send(struct socket *sock,
2722 struct socket *other)
2727 static inline int security_socket_create(int family, int type,
2728 int protocol, int kern)
2733 static inline int security_socket_post_create(struct socket *sock,
2736 int protocol, int kern)
2741 static inline int security_socket_bind(struct socket *sock,
2742 struct sockaddr *address,
2748 static inline int security_socket_connect(struct socket *sock,
2749 struct sockaddr *address,
2755 static inline int security_socket_listen(struct socket *sock, int backlog)
2760 static inline int security_socket_accept(struct socket *sock,
2761 struct socket *newsock)
2766 static inline int security_socket_sendmsg(struct socket *sock,
2767 struct msghdr *msg, int size)
2772 static inline int security_socket_recvmsg(struct socket *sock,
2773 struct msghdr *msg, int size,
2779 static inline int security_socket_getsockname(struct socket *sock)
2784 static inline int security_socket_getpeername(struct socket *sock)
2789 static inline int security_socket_getsockopt(struct socket *sock,
2790 int level, int optname)
2795 static inline int security_socket_setsockopt(struct socket *sock,
2796 int level, int optname)
2801 static inline int security_socket_shutdown(struct socket *sock, int how)
2805 static inline int security_sock_rcv_skb(struct sock *sk,
2806 struct sk_buff *skb)
2811 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2812 int __user *optlen, unsigned len)
2814 return -ENOPROTOOPT;
2817 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
2819 return -ENOPROTOOPT;
2822 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2827 static inline void security_sk_free(struct sock *sk)
2831 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
2835 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
2839 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2843 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
2847 static inline int security_inet_conn_request(struct sock *sk,
2848 struct sk_buff *skb, struct request_sock *req)
2853 static inline void security_inet_csk_clone(struct sock *newsk,
2854 const struct request_sock *req)
2858 static inline void security_inet_conn_established(struct sock *sk,
2859 struct sk_buff *skb)
2863 static inline int security_tun_dev_create(void)
2868 static inline void security_tun_dev_post_create(struct sock *sk)
2872 static inline int security_tun_dev_attach(struct sock *sk)
2876 #endif /* CONFIG_SECURITY_NETWORK */
2878 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2880 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx);
2881 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
2882 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
2883 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
2884 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
2885 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2886 struct xfrm_sec_ctx *polsec, u32 secid);
2887 int security_xfrm_state_delete(struct xfrm_state *x);
2888 void security_xfrm_state_free(struct xfrm_state *x);
2889 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
2890 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2891 struct xfrm_policy *xp, struct flowi *fl);
2892 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
2893 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
2895 #else /* CONFIG_SECURITY_NETWORK_XFRM */
2897 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
2902 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
2907 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
2911 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
2916 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
2917 struct xfrm_user_sec_ctx *sec_ctx)
2922 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2923 struct xfrm_sec_ctx *polsec, u32 secid)
2928 static inline void security_xfrm_state_free(struct xfrm_state *x)
2932 static inline int security_xfrm_state_delete(struct xfrm_state *x)
2937 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
2942 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2943 struct xfrm_policy *xp, struct flowi *fl)
2948 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
2953 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2957 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2959 #ifdef CONFIG_SECURITY_PATH
2960 int security_path_unlink(struct path *dir, struct dentry *dentry);
2961 int security_path_mkdir(struct path *dir, struct dentry *dentry, int mode);
2962 int security_path_rmdir(struct path *dir, struct dentry *dentry);
2963 int security_path_mknod(struct path *dir, struct dentry *dentry, int mode,
2965 int security_path_truncate(struct path *path, loff_t length,
2966 unsigned int time_attrs);
2967 int security_path_symlink(struct path *dir, struct dentry *dentry,
2968 const char *old_name);
2969 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
2970 struct dentry *new_dentry);
2971 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
2972 struct path *new_dir, struct dentry *new_dentry);
2973 int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
2975 int security_path_chown(struct path *path, uid_t uid, gid_t gid);
2976 int security_path_chroot(struct path *path);
2977 #else /* CONFIG_SECURITY_PATH */
2978 static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
2983 static inline int security_path_mkdir(struct path *dir, struct dentry *dentry,
2989 static inline int security_path_rmdir(struct path *dir, struct dentry *dentry)
2994 static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
2995 int mode, unsigned int dev)
3000 static inline int security_path_truncate(struct path *path, loff_t length,
3001 unsigned int time_attrs)
3006 static inline int security_path_symlink(struct path *dir, struct dentry *dentry,
3007 const char *old_name)
3012 static inline int security_path_link(struct dentry *old_dentry,
3013 struct path *new_dir,
3014 struct dentry *new_dentry)
3019 static inline int security_path_rename(struct path *old_dir,
3020 struct dentry *old_dentry,
3021 struct path *new_dir,
3022 struct dentry *new_dentry)
3027 static inline int security_path_chmod(struct dentry *dentry,
3028 struct vfsmount *mnt,
3034 static inline int security_path_chown(struct path *path, uid_t uid, gid_t gid)
3039 static inline int security_path_chroot(struct path *path)
3043 #endif /* CONFIG_SECURITY_PATH */
3046 #ifdef CONFIG_SECURITY
3048 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
3049 void security_key_free(struct key *key);
3050 int security_key_permission(key_ref_t key_ref,
3051 const struct cred *cred, key_perm_t perm);
3052 int security_key_getsecurity(struct key *key, char **_buffer);
3053 int security_key_session_to_parent(const struct cred *cred,
3054 const struct cred *parent_cred,
3059 static inline int security_key_alloc(struct key *key,
3060 const struct cred *cred,
3061 unsigned long flags)
3066 static inline void security_key_free(struct key *key)
3070 static inline int security_key_permission(key_ref_t key_ref,
3071 const struct cred *cred,
3077 static inline int security_key_getsecurity(struct key *key, char **_buffer)
3083 static inline int security_key_session_to_parent(const struct cred *cred,
3084 const struct cred *parent_cred,
3091 #endif /* CONFIG_KEYS */
3094 #ifdef CONFIG_SECURITY
3095 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
3096 int security_audit_rule_known(struct audit_krule *krule);
3097 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
3098 struct audit_context *actx);
3099 void security_audit_rule_free(void *lsmrule);
3103 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
3109 static inline int security_audit_rule_known(struct audit_krule *krule)
3114 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
3115 void *lsmrule, struct audit_context *actx)
3120 static inline void security_audit_rule_free(void *lsmrule)
3123 #endif /* CONFIG_SECURITY */
3124 #endif /* CONFIG_AUDIT */
3126 #ifdef CONFIG_SECURITYFS
3128 extern struct dentry *securityfs_create_file(const char *name, mode_t mode,
3129 struct dentry *parent, void *data,
3130 const struct file_operations *fops);
3131 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
3132 extern void securityfs_remove(struct dentry *dentry);
3134 #else /* CONFIG_SECURITYFS */
3136 static inline struct dentry *securityfs_create_dir(const char *name,
3137 struct dentry *parent)
3139 return ERR_PTR(-ENODEV);
3142 static inline struct dentry *securityfs_create_file(const char *name,
3144 struct dentry *parent,
3146 const struct file_operations *fops)
3148 return ERR_PTR(-ENODEV);
3151 static inline void securityfs_remove(struct dentry *dentry)
3156 #ifdef CONFIG_SECURITY
3158 static inline char *alloc_secdata(void)
3160 return (char *)get_zeroed_page(GFP_KERNEL);
3163 static inline void free_secdata(void *secdata)
3165 free_page((unsigned long)secdata);
3170 static inline char *alloc_secdata(void)
3175 static inline void free_secdata(void *secdata)
3177 #endif /* CONFIG_SECURITY */
3179 #endif /* ! __LINUX_SECURITY_H */