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 * Check permission before pivoting the root filesystem.
277 * @old_path contains the path for the new location of the current root (put_old).
278 * @new_path contains the path for the new root (new_root).
279 * Return 0 if permission is granted.
280 * @sb_post_pivotroot:
281 * Update module state after a successful pivot.
282 * @old_path contains the path for the old root.
283 * @new_path contains the path for the new root.
285 * Set the security relevant mount options used for a superblock
286 * @sb the superblock to set security mount options for
287 * @opts binary data structure containing all lsm mount data
288 * @sb_clone_mnt_opts:
289 * Copy all security options from a given superblock to another
290 * @oldsb old superblock which contain information to clone
291 * @newsb new superblock which needs filled in
292 * @sb_parse_opts_str:
293 * Parse a string of security data filling in the opts structure
294 * @options string containing all mount options known by the LSM
295 * @opts binary data structure usable by the LSM
297 * Security hooks for inode operations.
299 * @inode_alloc_security:
300 * Allocate and attach a security structure to @inode->i_security. The
301 * i_security field is initialized to NULL when the inode structure is
303 * @inode contains the inode structure.
304 * Return 0 if operation was successful.
305 * @inode_free_security:
306 * @inode contains the inode structure.
307 * Deallocate the inode security structure and set @inode->i_security to
309 * @inode_init_security:
310 * Obtain the security attribute name suffix and value to set on a newly
311 * created inode and set up the incore security field for the new inode.
312 * This hook is called by the fs code as part of the inode creation
313 * transaction and provides for atomic labeling of the inode, unlike
314 * the post_create/mkdir/... hooks called by the VFS. The hook function
315 * is expected to allocate the name and value via kmalloc, with the caller
316 * being responsible for calling kfree after using them.
317 * If the security module does not use security attributes or does
318 * not wish to put a security attribute on this particular inode,
319 * then it should return -EOPNOTSUPP to skip this processing.
320 * @inode contains the inode structure of the newly created inode.
321 * @dir contains the inode structure of the parent directory.
322 * @name will be set to the allocated name suffix (e.g. selinux).
323 * @value will be set to the allocated attribute value.
324 * @len will be set to the length of the value.
325 * Returns 0 if @name and @value have been successfully set,
326 * -EOPNOTSUPP if no security attribute is needed, or
327 * -ENOMEM on memory allocation failure.
329 * Check permission to create a regular file.
330 * @dir contains inode structure of the parent of the new file.
331 * @dentry contains the dentry structure for the file to be created.
332 * @mode contains the file mode of the file to be created.
333 * Return 0 if permission is granted.
335 * Check permission before creating a new hard link to a file.
336 * @old_dentry contains the dentry structure for an existing link to the file.
337 * @dir contains the inode structure of the parent directory of the new link.
338 * @new_dentry contains the dentry structure for the new link.
339 * Return 0 if permission is granted.
341 * Check permission before creating a new hard link to a file.
342 * @old_dentry contains the dentry structure for an existing link
344 * @new_dir contains the path structure of the parent directory of
346 * @new_dentry contains the dentry structure for the new link.
347 * Return 0 if permission is granted.
349 * Check the permission to remove a hard link to a file.
350 * @dir contains the inode structure of parent directory of the file.
351 * @dentry contains the dentry structure for file to be unlinked.
352 * Return 0 if permission is granted.
354 * Check the permission to remove a hard link to a file.
355 * @dir contains the path structure of parent directory of the file.
356 * @dentry contains the dentry structure for file to be unlinked.
357 * Return 0 if permission is granted.
359 * Check the permission to create a symbolic link to a file.
360 * @dir contains the inode structure of parent directory of the symbolic link.
361 * @dentry contains the dentry structure of the symbolic link.
362 * @old_name contains the pathname of file.
363 * Return 0 if permission is granted.
365 * Check the permission to create a symbolic link to a file.
366 * @dir contains the path structure of parent directory of
368 * @dentry contains the dentry structure of the symbolic link.
369 * @old_name contains the pathname of file.
370 * Return 0 if permission is granted.
372 * Check permissions to create a new directory in the existing directory
373 * associated with inode strcture @dir.
374 * @dir containst the inode structure of parent of the directory to be created.
375 * @dentry contains the dentry structure of new directory.
376 * @mode contains the mode of new directory.
377 * Return 0 if permission is granted.
379 * Check permissions to create a new directory in the existing directory
380 * associated with path strcture @path.
381 * @dir containst the path structure of parent of the directory
383 * @dentry contains the dentry structure of new directory.
384 * @mode contains the mode of new directory.
385 * Return 0 if permission is granted.
387 * Check the permission to remove a directory.
388 * @dir contains the inode structure of parent of the directory to be removed.
389 * @dentry contains the dentry structure of directory to be removed.
390 * Return 0 if permission is granted.
392 * Check the permission to remove a directory.
393 * @dir contains the path structure of parent of the directory to be
395 * @dentry contains the dentry structure of directory to be removed.
396 * Return 0 if permission is granted.
398 * Check permissions when creating a special file (or a socket or a fifo
399 * file created via the mknod system call). Note that if mknod operation
400 * is being done for a regular file, then the create hook will be called
402 * @dir contains the inode structure of parent of the new file.
403 * @dentry contains the dentry structure of the new file.
404 * @mode contains the mode of the new file.
405 * @dev contains the device number.
406 * Return 0 if permission is granted.
408 * Check permissions when creating a file. Note that this hook is called
409 * even if mknod operation is being done for a regular file.
410 * @dir contains the path structure of parent of the new file.
411 * @dentry contains the dentry structure of the new file.
412 * @mode contains the mode of the new file.
413 * @dev contains the undecoded device number. Use new_decode_dev() to get
414 * the decoded device number.
415 * Return 0 if permission is granted.
417 * Check for permission to rename a file or directory.
418 * @old_dir contains the inode structure for parent of the old link.
419 * @old_dentry contains the dentry structure of the old link.
420 * @new_dir contains the inode structure for parent of the new link.
421 * @new_dentry contains the dentry structure of the new link.
422 * Return 0 if permission is granted.
424 * Check for permission to rename a file or directory.
425 * @old_dir contains the path structure for parent of the old link.
426 * @old_dentry contains the dentry structure of the old link.
427 * @new_dir contains the path structure for parent of the new link.
428 * @new_dentry contains the dentry structure of the new link.
429 * Return 0 if permission is granted.
431 * Check for permission to change DAC's permission of a file or directory.
432 * @dentry contains the dentry structure.
433 * @mnt contains the vfsmnt structure.
434 * @mode contains DAC's mode.
435 * Return 0 if permission is granted.
437 * Check for permission to change owner/group of a file or directory.
438 * @path contains the path structure.
439 * @uid contains new owner's ID.
440 * @gid contains new group's ID.
441 * Return 0 if permission is granted.
443 * Check for permission to change root directory.
444 * @path contains the path structure.
445 * Return 0 if permission is granted.
447 * Check the permission to read the symbolic link.
448 * @dentry contains the dentry structure for the file link.
449 * Return 0 if permission is granted.
450 * @inode_follow_link:
451 * Check permission to follow a symbolic link when looking up a pathname.
452 * @dentry contains the dentry structure for the link.
453 * @nd contains the nameidata structure for the parent directory.
454 * Return 0 if permission is granted.
456 * Check permission before accessing an inode. This hook is called by the
457 * existing Linux permission function, so a security module can use it to
458 * provide additional checking for existing Linux permission checks.
459 * Notice that this hook is called when a file is opened (as well as many
460 * other operations), whereas the file_security_ops permission hook is
461 * called when the actual read/write operations are performed.
462 * @inode contains the inode structure to check.
463 * @mask contains the permission mask.
464 * @nd contains the nameidata (may be NULL).
465 * Return 0 if permission is granted.
467 * Check permission before setting file attributes. Note that the kernel
468 * call to notify_change is performed from several locations, whenever
469 * file attributes change (such as when a file is truncated, chown/chmod
470 * operations, transferring disk quotas, etc).
471 * @dentry contains the dentry structure for the file.
472 * @attr is the iattr structure containing the new file attributes.
473 * Return 0 if permission is granted.
475 * Check permission before truncating a file.
476 * @path contains the path structure for the file.
477 * @length is the new length of the file.
478 * @time_attrs is the flags passed to do_truncate().
479 * Return 0 if permission is granted.
481 * Check permission before obtaining file attributes.
482 * @mnt is the vfsmount where the dentry was looked up
483 * @dentry contains the dentry structure for the file.
484 * Return 0 if permission is granted.
486 * @inode contains the inode structure for deleted inode.
487 * This hook is called when a deleted inode is released (i.e. an inode
488 * with no hard links has its use count drop to zero). A security module
489 * can use this hook to release any persistent label associated with the
492 * Check permission before setting the extended attributes
493 * @value identified by @name for @dentry.
494 * Return 0 if permission is granted.
495 * @inode_post_setxattr:
496 * Update inode security field after successful setxattr operation.
497 * @value identified by @name for @dentry.
499 * Check permission before obtaining the extended attributes
500 * identified by @name for @dentry.
501 * Return 0 if permission is granted.
503 * Check permission before obtaining the list of extended attribute
505 * Return 0 if permission is granted.
506 * @inode_removexattr:
507 * Check permission before removing the extended attribute
508 * identified by @name for @dentry.
509 * Return 0 if permission is granted.
510 * @inode_getsecurity:
511 * Retrieve a copy of the extended attribute representation of the
512 * security label associated with @name for @inode via @buffer. Note that
513 * @name is the remainder of the attribute name after the security prefix
514 * has been removed. @alloc is used to specify of the call should return a
515 * value via the buffer or just the value length Return size of buffer on
517 * @inode_setsecurity:
518 * Set the security label associated with @name for @inode from the
519 * extended attribute value @value. @size indicates the size of the
520 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
521 * Note that @name is the remainder of the attribute name after the
522 * security. prefix has been removed.
523 * Return 0 on success.
524 * @inode_listsecurity:
525 * Copy the extended attribute names for the security labels
526 * associated with @inode into @buffer. The maximum size of @buffer
527 * is specified by @buffer_size. @buffer may be NULL to request
528 * the size of the buffer required.
529 * Returns number of bytes used/required on success.
530 * @inode_need_killpriv:
531 * Called when an inode has been changed.
532 * @dentry is the dentry being changed.
533 * Return <0 on error to abort the inode change operation.
534 * Return 0 if inode_killpriv does not need to be called.
535 * Return >0 if inode_killpriv does need to be called.
537 * The setuid bit is being removed. Remove similar security labels.
538 * Called with the dentry->d_inode->i_mutex held.
539 * @dentry is the dentry being changed.
540 * Return 0 on success. If error is returned, then the operation
541 * causing setuid bit removal is failed.
543 * Get the secid associated with the node.
544 * @inode contains a pointer to the inode.
545 * @secid contains a pointer to the location where result will be saved.
546 * In case of failure, @secid will be set to zero.
548 * Security hooks for file operations
551 * Check file permissions before accessing an open file. This hook is
552 * called by various operations that read or write files. A security
553 * module can use this hook to perform additional checking on these
554 * operations, e.g. to revalidate permissions on use to support privilege
555 * bracketing or policy changes. Notice that this hook is used when the
556 * actual read/write operations are performed, whereas the
557 * inode_security_ops hook is called when a file is opened (as well as
558 * many other operations).
559 * Caveat: Although this hook can be used to revalidate permissions for
560 * various system call operations that read or write files, it does not
561 * address the revalidation of permissions for memory-mapped files.
562 * Security modules must handle this separately if they need such
564 * @file contains the file structure being accessed.
565 * @mask contains the requested permissions.
566 * Return 0 if permission is granted.
567 * @file_alloc_security:
568 * Allocate and attach a security structure to the file->f_security field.
569 * The security field is initialized to NULL when the structure is first
571 * @file contains the file structure to secure.
572 * Return 0 if the hook is successful and permission is granted.
573 * @file_free_security:
574 * Deallocate and free any security structures stored in file->f_security.
575 * @file contains the file structure being modified.
577 * @file contains the file structure.
578 * @cmd contains the operation to perform.
579 * @arg contains the operational arguments.
580 * Check permission for an ioctl operation on @file. Note that @arg can
581 * sometimes represents a user space pointer; in other cases, it may be a
582 * simple integer value. When @arg represents a user space pointer, it
583 * should never be used by the security module.
584 * Return 0 if permission is granted.
586 * Check permissions for a mmap operation. The @file may be NULL, e.g.
587 * if mapping anonymous memory.
588 * @file contains the file structure for file to map (may be NULL).
589 * @reqprot contains the protection requested by the application.
590 * @prot contains the protection that will be applied by the kernel.
591 * @flags contains the operational flags.
592 * Return 0 if permission is granted.
594 * Check permissions before changing memory access permissions.
595 * @vma contains the memory region to modify.
596 * @reqprot contains the protection requested by the application.
597 * @prot contains the protection that will be applied by the kernel.
598 * Return 0 if permission is granted.
600 * Check permission before performing file locking operations.
601 * Note: this hook mediates both flock and fcntl style locks.
602 * @file contains the file structure.
603 * @cmd contains the posix-translated lock operation to perform
604 * (e.g. F_RDLCK, F_WRLCK).
605 * Return 0 if permission is granted.
607 * Check permission before allowing the file operation specified by @cmd
608 * from being performed on the file @file. Note that @arg can sometimes
609 * represents a user space pointer; in other cases, it may be a simple
610 * integer value. When @arg represents a user space pointer, it should
611 * never be used by the security module.
612 * @file contains the file structure.
613 * @cmd contains the operation to be performed.
614 * @arg contains the operational arguments.
615 * Return 0 if permission is granted.
617 * Save owner security information (typically from current->security) in
618 * file->f_security for later use by the send_sigiotask hook.
619 * @file contains the file structure to update.
620 * Return 0 on success.
621 * @file_send_sigiotask:
622 * Check permission for the file owner @fown to send SIGIO or SIGURG to the
623 * process @tsk. Note that this hook is sometimes called from interrupt.
624 * Note that the fown_struct, @fown, is never outside the context of a
625 * struct file, so the file structure (and associated security information)
626 * can always be obtained:
627 * container_of(fown, struct file, f_owner)
628 * @tsk contains the structure of task receiving signal.
629 * @fown contains the file owner information.
630 * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
631 * Return 0 if permission is granted.
633 * This hook allows security modules to control the ability of a process
634 * to receive an open file descriptor via socket IPC.
635 * @file contains the file structure being received.
636 * Return 0 if permission is granted.
638 * Security hook for dentry
641 * Save open-time permission checking state for later use upon
642 * file_permission, and recheck access if anything has changed
643 * since inode_permission.
645 * Security hooks for task operations.
648 * Check permission before creating a child process. See the clone(2)
649 * manual page for definitions of the @clone_flags.
650 * @clone_flags contains the flags indicating what should be shared.
651 * Return 0 if permission is granted.
653 * @cred points to the credentials.
654 * @gfp indicates the atomicity of any memory allocations.
655 * Only allocate sufficient memory and attach to @cred such that
656 * cred_transfer() will not get ENOMEM.
658 * @cred points to the credentials.
659 * Deallocate and clear the cred->security field in a set of credentials.
661 * @new points to the new credentials.
662 * @old points to the original credentials.
663 * @gfp indicates the atomicity of any memory allocations.
664 * Prepare a new set of credentials by copying the data from the old set.
666 * @new points to the new credentials.
667 * @old points to the original credentials.
668 * Install a new set of credentials.
670 * @new points to the new credentials.
671 * @old points to the original credentials.
672 * Transfer data from original creds to new creds
674 * Set the credentials for a kernel service to act as (subjective context).
675 * @new points to the credentials to be modified.
676 * @secid specifies the security ID to be set
677 * The current task must be the one that nominated @secid.
678 * Return 0 if successful.
679 * @kernel_create_files_as:
680 * Set the file creation context in a set of credentials to be the same as
681 * the objective context of the specified inode.
682 * @new points to the credentials to be modified.
683 * @inode points to the inode to use as a reference.
684 * The current task must be the one that nominated @inode.
685 * Return 0 if successful.
686 * @kernel_module_request:
687 * Ability to trigger the kernel to automatically upcall to userspace for
688 * userspace to load a kernel module with the given name.
689 * @kmod_name name of the module requested by the kernel
690 * Return 0 if successful.
692 * Check permission before setting one or more of the user identity
693 * attributes of the current process. The @flags parameter indicates
694 * which of the set*uid system calls invoked this hook and how to
695 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
696 * definitions at the beginning of this file for the @flags values and
698 * @id0 contains a uid.
699 * @id1 contains a uid.
700 * @id2 contains a uid.
701 * @flags contains one of the LSM_SETID_* values.
702 * Return 0 if permission is granted.
704 * Update the module's state after setting one or more of the user
705 * identity attributes of the current process. The @flags parameter
706 * indicates which of the set*uid system calls invoked this hook. If
707 * @new is the set of credentials that will be installed. Modifications
708 * should be made to this rather than to @current->cred.
709 * @old is the set of credentials that are being replaces
710 * @flags contains one of the LSM_SETID_* values.
711 * Return 0 on success.
713 * Check permission before setting one or more of the group identity
714 * attributes of the current process. The @flags parameter indicates
715 * which of the set*gid system calls invoked this hook and how to
716 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
717 * definitions at the beginning of this file for the @flags values and
719 * @id0 contains a gid.
720 * @id1 contains a gid.
721 * @id2 contains a gid.
722 * @flags contains one of the LSM_SETID_* values.
723 * Return 0 if permission is granted.
725 * Check permission before setting the process group identifier of the
726 * process @p to @pgid.
727 * @p contains the task_struct for process being modified.
728 * @pgid contains the new pgid.
729 * Return 0 if permission is granted.
731 * Check permission before getting the process group identifier of the
733 * @p contains the task_struct for the process.
734 * Return 0 if permission is granted.
736 * Check permission before getting the session identifier of the process
738 * @p contains the task_struct for the process.
739 * Return 0 if permission is granted.
741 * Retrieve the security identifier of the process @p.
742 * @p contains the task_struct for the process and place is into @secid.
743 * In case of failure, @secid will be set to zero.
746 * Check permission before setting the supplementary group set of the
748 * @group_info contains the new group information.
749 * Return 0 if permission is granted.
751 * Check permission before setting the nice value of @p to @nice.
752 * @p contains the task_struct of process.
753 * @nice contains the new nice value.
754 * Return 0 if permission is granted.
756 * Check permission before setting the ioprio value of @p to @ioprio.
757 * @p contains the task_struct of process.
758 * @ioprio contains the new ioprio value
759 * Return 0 if permission is granted.
761 * Check permission before getting the ioprio value of @p.
762 * @p contains the task_struct of process.
763 * Return 0 if permission is granted.
765 * Check permission before setting the resource limits of the current
766 * process for @resource to @new_rlim. The old resource limit values can
767 * be examined by dereferencing (current->signal->rlim + resource).
768 * @resource contains the resource whose limit is being set.
769 * @new_rlim contains the new limits for @resource.
770 * Return 0 if permission is granted.
771 * @task_setscheduler:
772 * Check permission before setting scheduling policy and/or parameters of
773 * process @p based on @policy and @lp.
774 * @p contains the task_struct for process.
775 * @policy contains the scheduling policy.
776 * @lp contains the scheduling parameters.
777 * Return 0 if permission is granted.
778 * @task_getscheduler:
779 * Check permission before obtaining scheduling information for process
781 * @p contains the task_struct for process.
782 * Return 0 if permission is granted.
784 * Check permission before moving memory owned by process @p.
785 * @p contains the task_struct for process.
786 * Return 0 if permission is granted.
788 * Check permission before sending signal @sig to @p. @info can be NULL,
789 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
790 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
791 * from the kernel and should typically be permitted.
792 * SIGIO signals are handled separately by the send_sigiotask hook in
794 * @p contains the task_struct for process.
795 * @info contains the signal information.
796 * @sig contains the signal value.
797 * @secid contains the sid of the process where the signal originated
798 * Return 0 if permission is granted.
800 * Check permission before allowing a process to reap a child process @p
801 * and collect its status information.
802 * @p contains the task_struct for process.
803 * Return 0 if permission is granted.
805 * Check permission before performing a process control operation on the
807 * @option contains the operation.
808 * @arg2 contains a argument.
809 * @arg3 contains a argument.
810 * @arg4 contains a argument.
811 * @arg5 contains a argument.
812 * Return -ENOSYS if no-one wanted to handle this op, any other value to
813 * cause prctl() to return immediately with that value.
815 * Set the security attributes for an inode based on an associated task's
816 * security attributes, e.g. for /proc/pid inodes.
817 * @p contains the task_struct for the task.
818 * @inode contains the inode structure for the inode.
820 * Security hooks for Netlink messaging.
823 * Save security information for a netlink message so that permission
824 * checking can be performed when the message is processed. The security
825 * information can be saved using the eff_cap field of the
826 * netlink_skb_parms structure. Also may be used to provide fine
827 * grained control over message transmission.
828 * @sk associated sock of task sending the message.,
829 * @skb contains the sk_buff structure for the netlink message.
830 * Return 0 if the information was successfully saved and message
831 * is allowed to be transmitted.
833 * Check permission before processing the received netlink message in
835 * @skb contains the sk_buff structure for the netlink message.
836 * @cap indicates the capability required
837 * Return 0 if permission is granted.
839 * Security hooks for Unix domain networking.
841 * @unix_stream_connect:
842 * Check permissions before establishing a Unix domain stream connection
843 * between @sock and @other.
844 * @sock contains the socket structure.
845 * @other contains the peer socket structure.
846 * Return 0 if permission is granted.
848 * Check permissions before connecting or sending datagrams from @sock to
850 * @sock contains the socket structure.
851 * @sock contains the peer socket structure.
852 * Return 0 if permission is granted.
854 * The @unix_stream_connect and @unix_may_send hooks were necessary because
855 * Linux provides an alternative to the conventional file name space for Unix
856 * domain sockets. Whereas binding and connecting to sockets in the file name
857 * space is mediated by the typical file permissions (and caught by the mknod
858 * and permission hooks in inode_security_ops), binding and connecting to
859 * sockets in the abstract name space is completely unmediated. Sufficient
860 * control of Unix domain sockets in the abstract name space isn't possible
861 * using only the socket layer hooks, since we need to know the actual target
862 * socket, which is not looked up until we are inside the af_unix code.
864 * Security hooks for socket operations.
867 * Check permissions prior to creating a new socket.
868 * @family contains the requested protocol family.
869 * @type contains the requested communications type.
870 * @protocol contains the requested protocol.
871 * @kern set to 1 if a kernel socket.
872 * Return 0 if permission is granted.
873 * @socket_post_create:
874 * This hook allows a module to update or allocate a per-socket security
875 * structure. Note that the security field was not added directly to the
876 * socket structure, but rather, the socket security information is stored
877 * in the associated inode. Typically, the inode alloc_security hook will
878 * allocate and and attach security information to
879 * sock->inode->i_security. This hook may be used to update the
880 * sock->inode->i_security field with additional information that wasn't
881 * available when the inode was allocated.
882 * @sock contains the newly created socket structure.
883 * @family contains the requested protocol family.
884 * @type contains the requested communications type.
885 * @protocol contains the requested protocol.
886 * @kern set to 1 if a kernel socket.
888 * Check permission before socket protocol layer bind operation is
889 * performed and the socket @sock is bound to the address specified in the
890 * @address parameter.
891 * @sock contains the socket structure.
892 * @address contains the address to bind to.
893 * @addrlen contains the length of address.
894 * Return 0 if permission is granted.
896 * Check permission before socket protocol layer connect operation
897 * attempts to connect socket @sock to a remote address, @address.
898 * @sock contains the socket structure.
899 * @address contains the address of remote endpoint.
900 * @addrlen contains the length of address.
901 * Return 0 if permission is granted.
903 * Check permission before socket protocol layer listen operation.
904 * @sock contains the socket structure.
905 * @backlog contains the maximum length for the pending connection queue.
906 * Return 0 if permission is granted.
908 * Check permission before accepting a new connection. Note that the new
909 * socket, @newsock, has been created and some information copied to it,
910 * but the accept operation has not actually been performed.
911 * @sock contains the listening socket structure.
912 * @newsock contains the newly created server socket for connection.
913 * Return 0 if permission is granted.
915 * Check permission before transmitting a message to another socket.
916 * @sock contains the socket structure.
917 * @msg contains the message to be transmitted.
918 * @size contains the size of message.
919 * Return 0 if permission is granted.
921 * Check permission before receiving a message from a socket.
922 * @sock contains the socket structure.
923 * @msg contains the message structure.
924 * @size contains the size of message structure.
925 * @flags contains the operational flags.
926 * Return 0 if permission is granted.
927 * @socket_getsockname:
928 * Check permission before the local address (name) of the socket object
929 * @sock is retrieved.
930 * @sock contains the socket structure.
931 * Return 0 if permission is granted.
932 * @socket_getpeername:
933 * Check permission before the remote address (name) of a socket object
934 * @sock is retrieved.
935 * @sock contains the socket structure.
936 * Return 0 if permission is granted.
937 * @socket_getsockopt:
938 * Check permissions before retrieving the options associated with socket
940 * @sock contains the socket structure.
941 * @level contains the protocol level to retrieve option from.
942 * @optname contains the name of option to retrieve.
943 * Return 0 if permission is granted.
944 * @socket_setsockopt:
945 * Check permissions before setting the options associated with socket
947 * @sock contains the socket structure.
948 * @level contains the protocol level to set options for.
949 * @optname contains the name of the option to set.
950 * Return 0 if permission is granted.
952 * Checks permission before all or part of a connection on the socket
953 * @sock is shut down.
954 * @sock contains the socket structure.
955 * @how contains the flag indicating how future sends and receives are handled.
956 * Return 0 if permission is granted.
957 * @socket_sock_rcv_skb:
958 * Check permissions on incoming network packets. This hook is distinct
959 * from Netfilter's IP input hooks since it is the first time that the
960 * incoming sk_buff @skb has been associated with a particular socket, @sk.
961 * Must not sleep inside this hook because some callers hold spinlocks.
962 * @sk contains the sock (not socket) associated with the incoming sk_buff.
963 * @skb contains the incoming network data.
964 * @socket_getpeersec_stream:
965 * This hook allows the security module to provide peer socket security
966 * state for unix or connected tcp sockets to userspace via getsockopt
967 * SO_GETPEERSEC. For tcp sockets this can be meaningful if the
968 * socket is associated with an ipsec SA.
969 * @sock is the local socket.
970 * @optval userspace memory where the security state is to be copied.
971 * @optlen userspace int where the module should copy the actual length
972 * of the security state.
973 * @len as input is the maximum length to copy to userspace provided
975 * Return 0 if all is well, otherwise, typical getsockopt return
977 * @socket_getpeersec_dgram:
978 * This hook allows the security module to provide peer socket security
979 * state for udp sockets on a per-packet basis to userspace via
980 * getsockopt SO_GETPEERSEC. The application must first have indicated
981 * the IP_PASSSEC option via getsockopt. It can then retrieve the
982 * security state returned by this hook for a packet via the SCM_SECURITY
983 * ancillary message type.
984 * @skb is the skbuff for the packet being queried
985 * @secdata is a pointer to a buffer in which to copy the security data
986 * @seclen is the maximum length for @secdata
987 * Return 0 on success, error on failure.
988 * @sk_alloc_security:
989 * Allocate and attach a security structure to the sk->sk_security field,
990 * which is used to copy security attributes between local stream sockets.
992 * Deallocate security structure.
993 * @sk_clone_security:
994 * Clone/copy security structure.
996 * Retrieve the LSM-specific secid for the sock to enable caching of network
999 * Sets the socket's isec sid to the sock's sid.
1000 * @inet_conn_request:
1001 * Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
1003 * Sets the new child socket's sid to the openreq sid.
1004 * @inet_conn_established:
1005 * Sets the connection's peersid to the secmark on skb.
1006 * @req_classify_flow:
1007 * Sets the flow's sid to the openreq sid.
1009 * Check permissions prior to creating a new TUN device.
1010 * @tun_dev_post_create:
1011 * This hook allows a module to update or allocate a per-socket security
1013 * @sk contains the newly created sock structure.
1015 * Check permissions prior to attaching to a persistent TUN device. This
1016 * hook can also be used by the module to update any security state
1017 * associated with the TUN device's sock structure.
1018 * @sk contains the existing sock structure.
1020 * Security hooks for XFRM operations.
1022 * @xfrm_policy_alloc_security:
1023 * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
1024 * Database used by the XFRM system.
1025 * @sec_ctx contains the security context information being provided by
1026 * the user-level policy update program (e.g., setkey).
1027 * Allocate a security structure to the xp->security field; the security
1028 * field is initialized to NULL when the xfrm_policy is allocated.
1029 * Return 0 if operation was successful (memory to allocate, legal context)
1030 * @xfrm_policy_clone_security:
1031 * @old_ctx contains an existing xfrm_sec_ctx.
1032 * @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
1033 * Allocate a security structure in new_ctxp that contains the
1034 * information from the old_ctx structure.
1035 * Return 0 if operation was successful (memory to allocate).
1036 * @xfrm_policy_free_security:
1037 * @ctx contains the xfrm_sec_ctx
1038 * Deallocate xp->security.
1039 * @xfrm_policy_delete_security:
1040 * @ctx contains the xfrm_sec_ctx.
1041 * Authorize deletion of xp->security.
1042 * @xfrm_state_alloc_security:
1043 * @x contains the xfrm_state being added to the Security Association
1044 * Database by the XFRM system.
1045 * @sec_ctx contains the security context information being provided by
1046 * the user-level SA generation program (e.g., setkey or racoon).
1047 * @secid contains the secid from which to take the mls portion of the context.
1048 * Allocate a security structure to the x->security field; the security
1049 * field is initialized to NULL when the xfrm_state is allocated. Set the
1050 * context to correspond to either sec_ctx or polsec, with the mls portion
1051 * taken from secid in the latter case.
1052 * Return 0 if operation was successful (memory to allocate, legal context).
1053 * @xfrm_state_free_security:
1054 * @x contains the xfrm_state.
1055 * Deallocate x->security.
1056 * @xfrm_state_delete_security:
1057 * @x contains the xfrm_state.
1058 * Authorize deletion of x->security.
1059 * @xfrm_policy_lookup:
1060 * @ctx contains the xfrm_sec_ctx for which the access control is being
1062 * @fl_secid contains the flow security label that is used to authorize
1063 * access to the policy xp.
1064 * @dir contains the direction of the flow (input or output).
1065 * Check permission when a flow selects a xfrm_policy for processing
1066 * XFRMs on a packet. The hook is called when selecting either a
1067 * per-socket policy or a generic xfrm policy.
1068 * Return 0 if permission is granted, -ESRCH otherwise, or -errno
1070 * @xfrm_state_pol_flow_match:
1071 * @x contains the state to match.
1072 * @xp contains the policy to check for a match.
1073 * @fl contains the flow to check for a match.
1074 * Return 1 if there is a match.
1075 * @xfrm_decode_session:
1076 * @skb points to skb to decode.
1077 * @secid points to the flow key secid to set.
1078 * @ckall says if all xfrms used should be checked for same secid.
1079 * Return 0 if ckall is zero or all xfrms used have the same secid.
1081 * Security hooks affecting all Key Management operations
1084 * Permit allocation of a key and assign security data. Note that key does
1085 * not have a serial number assigned at this point.
1086 * @key points to the key.
1087 * @flags is the allocation flags
1088 * Return 0 if permission is granted, -ve error otherwise.
1090 * Notification of destruction; free security data.
1091 * @key points to the key.
1094 * See whether a specific operational right is granted to a process on a
1096 * @key_ref refers to the key (key pointer + possession attribute bit).
1097 * @cred points to the credentials to provide the context against which to
1098 * evaluate the security data on the key.
1099 * @perm describes the combination of permissions required of this key.
1100 * Return 1 if permission granted, 0 if permission denied and -ve it the
1101 * normal permissions model should be effected.
1103 * Get a textual representation of the security context attached to a key
1104 * for the purposes of honouring KEYCTL_GETSECURITY. This function
1105 * allocates the storage for the NUL-terminated string and the caller
1107 * @key points to the key to be queried.
1108 * @_buffer points to a pointer that should be set to point to the
1109 * resulting string (if no label or an error occurs).
1110 * Return the length of the string (including terminating NUL) or -ve if
1112 * May also return 0 (and a NULL buffer pointer) if there is no label.
1113 * @key_session_to_parent:
1114 * Forcibly assign the session keyring from a process to its parent
1116 * @cred: Pointer to process's credentials
1117 * @parent_cred: Pointer to parent process's credentials
1118 * @keyring: Proposed new session keyring
1119 * Return 0 if permission is granted, -ve error otherwise.
1121 * Security hooks affecting all System V IPC operations.
1124 * Check permissions for access to IPC
1125 * @ipcp contains the kernel IPC permission structure
1126 * @flag contains the desired (requested) permission set
1127 * Return 0 if permission is granted.
1129 * Get the secid associated with the ipc object.
1130 * @ipcp contains the kernel IPC permission structure.
1131 * @secid contains a pointer to the location where result will be saved.
1132 * In case of failure, @secid will be set to zero.
1134 * Security hooks for individual messages held in System V IPC message queues
1135 * @msg_msg_alloc_security:
1136 * Allocate and attach a security structure to the msg->security field.
1137 * The security field is initialized to NULL when the structure is first
1139 * @msg contains the message structure to be modified.
1140 * Return 0 if operation was successful and permission is granted.
1141 * @msg_msg_free_security:
1142 * Deallocate the security structure for this message.
1143 * @msg contains the message structure to be modified.
1145 * Security hooks for System V IPC Message Queues
1147 * @msg_queue_alloc_security:
1148 * Allocate and attach a security structure to the
1149 * msq->q_perm.security field. The security field is initialized to
1150 * NULL when the structure is first created.
1151 * @msq contains the message queue structure to be modified.
1152 * Return 0 if operation was successful and permission is granted.
1153 * @msg_queue_free_security:
1154 * Deallocate security structure for this message queue.
1155 * @msq contains the message queue structure to be modified.
1156 * @msg_queue_associate:
1157 * Check permission when a message queue is requested through the
1158 * msgget system call. This hook is only called when returning the
1159 * message queue identifier for an existing message queue, not when a
1160 * new message queue is created.
1161 * @msq contains the message queue to act upon.
1162 * @msqflg contains the operation control flags.
1163 * Return 0 if permission is granted.
1164 * @msg_queue_msgctl:
1165 * Check permission when a message control operation specified by @cmd
1166 * is to be performed on the message queue @msq.
1167 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
1168 * @msq contains the message queue to act upon. May be NULL.
1169 * @cmd contains the operation to be performed.
1170 * Return 0 if permission is granted.
1171 * @msg_queue_msgsnd:
1172 * Check permission before a message, @msg, is enqueued on the message
1174 * @msq contains the message queue to send message to.
1175 * @msg contains the message to be enqueued.
1176 * @msqflg contains operational flags.
1177 * Return 0 if permission is granted.
1178 * @msg_queue_msgrcv:
1179 * Check permission before a message, @msg, is removed from the message
1180 * queue, @msq. The @target task structure contains a pointer to the
1181 * process that will be receiving the message (not equal to the current
1182 * process when inline receives are being performed).
1183 * @msq contains the message queue to retrieve message from.
1184 * @msg contains the message destination.
1185 * @target contains the task structure for recipient process.
1186 * @type contains the type of message requested.
1187 * @mode contains the operational flags.
1188 * Return 0 if permission is granted.
1190 * Security hooks for System V Shared Memory Segments
1192 * @shm_alloc_security:
1193 * Allocate and attach a security structure to the shp->shm_perm.security
1194 * field. The security field is initialized to NULL when the structure is
1196 * @shp contains the shared memory structure to be modified.
1197 * Return 0 if operation was successful and permission is granted.
1198 * @shm_free_security:
1199 * Deallocate the security struct for this memory segment.
1200 * @shp contains the shared memory structure to be modified.
1202 * Check permission when a shared memory region is requested through the
1203 * shmget system call. This hook is only called when returning the shared
1204 * memory region identifier for an existing region, not when a new shared
1205 * memory region is created.
1206 * @shp contains the shared memory structure to be modified.
1207 * @shmflg contains the operation control flags.
1208 * Return 0 if permission is granted.
1210 * Check permission when a shared memory control operation specified by
1211 * @cmd is to be performed on the shared memory region @shp.
1212 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1213 * @shp contains shared memory structure to be modified.
1214 * @cmd contains the operation to be performed.
1215 * Return 0 if permission is granted.
1217 * Check permissions prior to allowing the shmat system call to attach the
1218 * shared memory segment @shp to the data segment of the calling process.
1219 * The attaching address is specified by @shmaddr.
1220 * @shp contains the shared memory structure to be modified.
1221 * @shmaddr contains the address to attach memory region to.
1222 * @shmflg contains the operational flags.
1223 * Return 0 if permission is granted.
1225 * Security hooks for System V Semaphores
1227 * @sem_alloc_security:
1228 * Allocate and attach a security structure to the sma->sem_perm.security
1229 * field. The security field is initialized to NULL when the structure is
1231 * @sma contains the semaphore structure
1232 * Return 0 if operation was successful and permission is granted.
1233 * @sem_free_security:
1234 * deallocate security struct for this semaphore
1235 * @sma contains the semaphore structure.
1237 * Check permission when a semaphore is requested through the semget
1238 * system call. This hook is only called when returning the semaphore
1239 * identifier for an existing semaphore, not when a new one must be
1241 * @sma contains the semaphore structure.
1242 * @semflg contains the operation control flags.
1243 * Return 0 if permission is granted.
1245 * Check permission when a semaphore operation specified by @cmd is to be
1246 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
1247 * IPC_INFO or SEM_INFO.
1248 * @sma contains the semaphore structure. May be NULL.
1249 * @cmd contains the operation to be performed.
1250 * Return 0 if permission is granted.
1252 * Check permissions before performing operations on members of the
1253 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1255 * @sma contains the semaphore structure.
1256 * @sops contains the operations to perform.
1257 * @nsops contains the number of operations to perform.
1258 * @alter contains the flag indicating whether changes are to be made.
1259 * Return 0 if permission is granted.
1261 * @ptrace_access_check:
1262 * Check permission before allowing the current process to trace the
1264 * Security modules may also want to perform a process tracing check
1265 * during an execve in the set_security or apply_creds hooks of
1266 * tracing check during an execve in the bprm_set_creds hook of
1267 * binprm_security_ops if the process is being traced and its security
1268 * attributes would be changed by the execve.
1269 * @child contains the task_struct structure for the target process.
1270 * @mode contains the PTRACE_MODE flags indicating the form of access.
1271 * Return 0 if permission is granted.
1273 * Check that the @parent process has sufficient permission to trace the
1274 * current process before allowing the current process to present itself
1275 * to the @parent process for tracing.
1276 * The parent process will still have to undergo the ptrace_access_check
1277 * checks before it is allowed to trace this one.
1278 * @parent contains the task_struct structure for debugger process.
1279 * Return 0 if permission is granted.
1281 * Get the @effective, @inheritable, and @permitted capability sets for
1282 * the @target process. The hook may also perform permission checking to
1283 * determine if the current process is allowed to see the capability sets
1284 * of the @target process.
1285 * @target contains the task_struct structure for target process.
1286 * @effective contains the effective capability set.
1287 * @inheritable contains the inheritable capability set.
1288 * @permitted contains the permitted capability set.
1289 * Return 0 if the capability sets were successfully obtained.
1291 * Set the @effective, @inheritable, and @permitted capability sets for
1292 * the current process.
1293 * @new contains the new credentials structure for target process.
1294 * @old contains the current credentials structure for target process.
1295 * @effective contains the effective capability set.
1296 * @inheritable contains the inheritable capability set.
1297 * @permitted contains the permitted capability set.
1298 * Return 0 and update @new if permission is granted.
1300 * Check whether the @tsk process has the @cap capability in the indicated
1302 * @tsk contains the task_struct for the process.
1303 * @cred contains the credentials to use.
1304 * @cap contains the capability <include/linux/capability.h>.
1305 * @audit: Whether to write an audit message or not
1306 * Return 0 if the capability is granted for @tsk.
1308 * Check permission before enabling or disabling process accounting. If
1309 * accounting is being enabled, then @file refers to the open file used to
1310 * store accounting records. If accounting is being disabled, then @file
1312 * @file contains the file structure for the accounting file (may be NULL).
1313 * Return 0 if permission is granted.
1315 * Check permission before accessing the @table sysctl variable in the
1316 * manner specified by @op.
1317 * @table contains the ctl_table structure for the sysctl variable.
1318 * @op contains the operation (001 = search, 002 = write, 004 = read).
1319 * Return 0 if permission is granted.
1321 * Check permission before accessing the kernel message ring or changing
1322 * logging to the console.
1323 * See the syslog(2) manual page for an explanation of the @type values.
1324 * @type contains the type of action.
1325 * @from_file indicates the context of action (if it came from /proc).
1326 * Return 0 if permission is granted.
1328 * Check permission to change the system time.
1329 * struct timespec and timezone are defined in include/linux/time.h
1330 * @ts contains new time
1331 * @tz contains new timezone
1332 * Return 0 if permission is granted.
1333 * @vm_enough_memory:
1334 * Check permissions for allocating a new virtual mapping.
1335 * @mm contains the mm struct it is being added to.
1336 * @pages contains the number of pages.
1337 * Return 0 if permission is granted.
1340 * Convert secid to security context.
1341 * @secid contains the security ID.
1342 * @secdata contains the pointer that stores the converted security context.
1344 * Convert security context to secid.
1345 * @secid contains the pointer to the generated security ID.
1346 * @secdata contains the security context.
1349 * Release the security context.
1350 * @secdata contains the security context.
1351 * @seclen contains the length of the security context.
1353 * Security hooks for Audit
1356 * Allocate and initialize an LSM audit rule structure.
1357 * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
1358 * @op contains the operator the rule uses.
1359 * @rulestr contains the context where the rule will be applied to.
1360 * @lsmrule contains a pointer to receive the result.
1361 * Return 0 if @lsmrule has been successfully set,
1362 * -EINVAL in case of an invalid rule.
1364 * @audit_rule_known:
1365 * Specifies whether given @rule contains any fields related to current LSM.
1366 * @rule contains the audit rule of interest.
1367 * Return 1 in case of relation found, 0 otherwise.
1369 * @audit_rule_match:
1370 * Determine if given @secid matches a rule previously approved
1371 * by @audit_rule_known.
1372 * @secid contains the security id in question.
1373 * @field contains the field which relates to current LSM.
1374 * @op contains the operator that will be used for matching.
1375 * @rule points to the audit rule that will be checked against.
1376 * @actx points to the audit context associated with the check.
1377 * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
1380 * Deallocate the LSM audit rule structure previously allocated by
1382 * @rule contains the allocated rule
1384 * @inode_notifysecctx:
1385 * Notify the security module of what the security context of an inode
1386 * should be. Initializes the incore security context managed by the
1387 * security module for this inode. Example usage: NFS client invokes
1388 * this hook to initialize the security context in its incore inode to the
1389 * value provided by the server for the file when the server returned the
1390 * file's attributes to the client.
1392 * Must be called with inode->i_mutex locked.
1394 * @inode we wish to set the security context of.
1395 * @ctx contains the string which we wish to set in the inode.
1396 * @ctxlen contains the length of @ctx.
1399 * Change the security context of an inode. Updates the
1400 * incore security context managed by the security module and invokes the
1401 * fs code as needed (via __vfs_setxattr_noperm) to update any backing
1402 * xattrs that represent the context. Example usage: NFS server invokes
1403 * this hook to change the security context in its incore inode and on the
1404 * backing filesystem to a value provided by the client on a SETATTR
1407 * Must be called with inode->i_mutex locked.
1409 * @dentry contains the inode we wish to set the security context of.
1410 * @ctx contains the string which we wish to set in the inode.
1411 * @ctxlen contains the length of @ctx.
1414 * Returns a string containing all relavent security context information
1416 * @inode we wish to set the security context of.
1417 * @ctx is a pointer in which to place the allocated security context.
1418 * @ctxlen points to the place to put the length of @ctx.
1419 * This is the main security structure.
1421 struct security_operations {
1422 char name[SECURITY_NAME_MAX + 1];
1424 int (*ptrace_access_check) (struct task_struct *child, unsigned int mode);
1425 int (*ptrace_traceme) (struct task_struct *parent);
1426 int (*capget) (struct task_struct *target,
1427 kernel_cap_t *effective,
1428 kernel_cap_t *inheritable, kernel_cap_t *permitted);
1429 int (*capset) (struct cred *new,
1430 const struct cred *old,
1431 const kernel_cap_t *effective,
1432 const kernel_cap_t *inheritable,
1433 const kernel_cap_t *permitted);
1434 int (*capable) (struct task_struct *tsk, const struct cred *cred,
1435 int cap, int audit);
1436 int (*acct) (struct file *file);
1437 int (*sysctl) (struct ctl_table *table, int op);
1438 int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
1439 int (*quota_on) (struct dentry *dentry);
1440 int (*syslog) (int type, bool from_file);
1441 int (*settime) (struct timespec *ts, struct timezone *tz);
1442 int (*vm_enough_memory) (struct mm_struct *mm, long pages);
1444 int (*bprm_set_creds) (struct linux_binprm *bprm);
1445 int (*bprm_check_security) (struct linux_binprm *bprm);
1446 int (*bprm_secureexec) (struct linux_binprm *bprm);
1447 void (*bprm_committing_creds) (struct linux_binprm *bprm);
1448 void (*bprm_committed_creds) (struct linux_binprm *bprm);
1450 int (*sb_alloc_security) (struct super_block *sb);
1451 void (*sb_free_security) (struct super_block *sb);
1452 int (*sb_copy_data) (char *orig, char *copy);
1453 int (*sb_kern_mount) (struct super_block *sb, int flags, void *data);
1454 int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
1455 int (*sb_statfs) (struct dentry *dentry);
1456 int (*sb_mount) (char *dev_name, struct path *path,
1457 char *type, unsigned long flags, void *data);
1458 int (*sb_umount) (struct vfsmount *mnt, int flags);
1459 int (*sb_pivotroot) (struct path *old_path,
1460 struct path *new_path);
1461 void (*sb_post_pivotroot) (struct path *old_path,
1462 struct path *new_path);
1463 int (*sb_set_mnt_opts) (struct super_block *sb,
1464 struct security_mnt_opts *opts);
1465 void (*sb_clone_mnt_opts) (const struct super_block *oldsb,
1466 struct super_block *newsb);
1467 int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
1469 #ifdef CONFIG_SECURITY_PATH
1470 int (*path_unlink) (struct path *dir, struct dentry *dentry);
1471 int (*path_mkdir) (struct path *dir, struct dentry *dentry, int mode);
1472 int (*path_rmdir) (struct path *dir, struct dentry *dentry);
1473 int (*path_mknod) (struct path *dir, struct dentry *dentry, int mode,
1475 int (*path_truncate) (struct path *path, loff_t length,
1476 unsigned int time_attrs);
1477 int (*path_symlink) (struct path *dir, struct dentry *dentry,
1478 const char *old_name);
1479 int (*path_link) (struct dentry *old_dentry, struct path *new_dir,
1480 struct dentry *new_dentry);
1481 int (*path_rename) (struct path *old_dir, struct dentry *old_dentry,
1482 struct path *new_dir, struct dentry *new_dentry);
1483 int (*path_chmod) (struct dentry *dentry, struct vfsmount *mnt,
1485 int (*path_chown) (struct path *path, uid_t uid, gid_t gid);
1486 int (*path_chroot) (struct path *path);
1489 int (*inode_alloc_security) (struct inode *inode);
1490 void (*inode_free_security) (struct inode *inode);
1491 int (*inode_init_security) (struct inode *inode, struct inode *dir,
1492 char **name, void **value, size_t *len);
1493 int (*inode_create) (struct inode *dir,
1494 struct dentry *dentry, int mode);
1495 int (*inode_link) (struct dentry *old_dentry,
1496 struct inode *dir, struct dentry *new_dentry);
1497 int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
1498 int (*inode_symlink) (struct inode *dir,
1499 struct dentry *dentry, const char *old_name);
1500 int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, int mode);
1501 int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
1502 int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
1503 int mode, dev_t dev);
1504 int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
1505 struct inode *new_dir, struct dentry *new_dentry);
1506 int (*inode_readlink) (struct dentry *dentry);
1507 int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
1508 int (*inode_permission) (struct inode *inode, int mask);
1509 int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
1510 int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
1511 void (*inode_delete) (struct inode *inode);
1512 int (*inode_setxattr) (struct dentry *dentry, const char *name,
1513 const void *value, size_t size, int flags);
1514 void (*inode_post_setxattr) (struct dentry *dentry, const char *name,
1515 const void *value, size_t size, int flags);
1516 int (*inode_getxattr) (struct dentry *dentry, const char *name);
1517 int (*inode_listxattr) (struct dentry *dentry);
1518 int (*inode_removexattr) (struct dentry *dentry, const char *name);
1519 int (*inode_need_killpriv) (struct dentry *dentry);
1520 int (*inode_killpriv) (struct dentry *dentry);
1521 int (*inode_getsecurity) (const struct inode *inode, const char *name, void **buffer, bool alloc);
1522 int (*inode_setsecurity) (struct inode *inode, const char *name, const void *value, size_t size, int flags);
1523 int (*inode_listsecurity) (struct inode *inode, char *buffer, size_t buffer_size);
1524 void (*inode_getsecid) (const struct inode *inode, u32 *secid);
1526 int (*file_permission) (struct file *file, int mask);
1527 int (*file_alloc_security) (struct file *file);
1528 void (*file_free_security) (struct file *file);
1529 int (*file_ioctl) (struct file *file, unsigned int cmd,
1531 int (*file_mmap) (struct file *file,
1532 unsigned long reqprot, unsigned long prot,
1533 unsigned long flags, unsigned long addr,
1534 unsigned long addr_only);
1535 int (*file_mprotect) (struct vm_area_struct *vma,
1536 unsigned long reqprot,
1537 unsigned long prot);
1538 int (*file_lock) (struct file *file, unsigned int cmd);
1539 int (*file_fcntl) (struct file *file, unsigned int cmd,
1541 int (*file_set_fowner) (struct file *file);
1542 int (*file_send_sigiotask) (struct task_struct *tsk,
1543 struct fown_struct *fown, int sig);
1544 int (*file_receive) (struct file *file);
1545 int (*dentry_open) (struct file *file, const struct cred *cred);
1547 int (*task_create) (unsigned long clone_flags);
1548 int (*cred_alloc_blank) (struct cred *cred, gfp_t gfp);
1549 void (*cred_free) (struct cred *cred);
1550 int (*cred_prepare)(struct cred *new, const struct cred *old,
1552 void (*cred_commit)(struct cred *new, const struct cred *old);
1553 void (*cred_transfer)(struct cred *new, const struct cred *old);
1554 int (*kernel_act_as)(struct cred *new, u32 secid);
1555 int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
1556 int (*kernel_module_request)(char *kmod_name);
1557 int (*task_setuid) (uid_t id0, uid_t id1, uid_t id2, int flags);
1558 int (*task_fix_setuid) (struct cred *new, const struct cred *old,
1560 int (*task_setgid) (gid_t id0, gid_t id1, gid_t id2, int flags);
1561 int (*task_setpgid) (struct task_struct *p, pid_t pgid);
1562 int (*task_getpgid) (struct task_struct *p);
1563 int (*task_getsid) (struct task_struct *p);
1564 void (*task_getsecid) (struct task_struct *p, u32 *secid);
1565 int (*task_setgroups) (struct group_info *group_info);
1566 int (*task_setnice) (struct task_struct *p, int nice);
1567 int (*task_setioprio) (struct task_struct *p, int ioprio);
1568 int (*task_getioprio) (struct task_struct *p);
1569 int (*task_setrlimit) (unsigned int resource, struct rlimit *new_rlim);
1570 int (*task_setscheduler) (struct task_struct *p, int policy,
1571 struct sched_param *lp);
1572 int (*task_getscheduler) (struct task_struct *p);
1573 int (*task_movememory) (struct task_struct *p);
1574 int (*task_kill) (struct task_struct *p,
1575 struct siginfo *info, int sig, u32 secid);
1576 int (*task_wait) (struct task_struct *p);
1577 int (*task_prctl) (int option, unsigned long arg2,
1578 unsigned long arg3, unsigned long arg4,
1579 unsigned long arg5);
1580 void (*task_to_inode) (struct task_struct *p, struct inode *inode);
1582 int (*ipc_permission) (struct kern_ipc_perm *ipcp, short flag);
1583 void (*ipc_getsecid) (struct kern_ipc_perm *ipcp, u32 *secid);
1585 int (*msg_msg_alloc_security) (struct msg_msg *msg);
1586 void (*msg_msg_free_security) (struct msg_msg *msg);
1588 int (*msg_queue_alloc_security) (struct msg_queue *msq);
1589 void (*msg_queue_free_security) (struct msg_queue *msq);
1590 int (*msg_queue_associate) (struct msg_queue *msq, int msqflg);
1591 int (*msg_queue_msgctl) (struct msg_queue *msq, int cmd);
1592 int (*msg_queue_msgsnd) (struct msg_queue *msq,
1593 struct msg_msg *msg, int msqflg);
1594 int (*msg_queue_msgrcv) (struct msg_queue *msq,
1595 struct msg_msg *msg,
1596 struct task_struct *target,
1597 long type, int mode);
1599 int (*shm_alloc_security) (struct shmid_kernel *shp);
1600 void (*shm_free_security) (struct shmid_kernel *shp);
1601 int (*shm_associate) (struct shmid_kernel *shp, int shmflg);
1602 int (*shm_shmctl) (struct shmid_kernel *shp, int cmd);
1603 int (*shm_shmat) (struct shmid_kernel *shp,
1604 char __user *shmaddr, int shmflg);
1606 int (*sem_alloc_security) (struct sem_array *sma);
1607 void (*sem_free_security) (struct sem_array *sma);
1608 int (*sem_associate) (struct sem_array *sma, int semflg);
1609 int (*sem_semctl) (struct sem_array *sma, int cmd);
1610 int (*sem_semop) (struct sem_array *sma,
1611 struct sembuf *sops, unsigned nsops, int alter);
1613 int (*netlink_send) (struct sock *sk, struct sk_buff *skb);
1614 int (*netlink_recv) (struct sk_buff *skb, int cap);
1616 void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1618 int (*getprocattr) (struct task_struct *p, char *name, char **value);
1619 int (*setprocattr) (struct task_struct *p, char *name, void *value, size_t size);
1620 int (*secid_to_secctx) (u32 secid, char **secdata, u32 *seclen);
1621 int (*secctx_to_secid) (const char *secdata, u32 seclen, u32 *secid);
1622 void (*release_secctx) (char *secdata, u32 seclen);
1624 int (*inode_notifysecctx)(struct inode *inode, void *ctx, u32 ctxlen);
1625 int (*inode_setsecctx)(struct dentry *dentry, void *ctx, u32 ctxlen);
1626 int (*inode_getsecctx)(struct inode *inode, void **ctx, u32 *ctxlen);
1628 #ifdef CONFIG_SECURITY_NETWORK
1629 int (*unix_stream_connect) (struct socket *sock,
1630 struct socket *other, struct sock *newsk);
1631 int (*unix_may_send) (struct socket *sock, struct socket *other);
1633 int (*socket_create) (int family, int type, int protocol, int kern);
1634 int (*socket_post_create) (struct socket *sock, int family,
1635 int type, int protocol, int kern);
1636 int (*socket_bind) (struct socket *sock,
1637 struct sockaddr *address, int addrlen);
1638 int (*socket_connect) (struct socket *sock,
1639 struct sockaddr *address, int addrlen);
1640 int (*socket_listen) (struct socket *sock, int backlog);
1641 int (*socket_accept) (struct socket *sock, struct socket *newsock);
1642 int (*socket_sendmsg) (struct socket *sock,
1643 struct msghdr *msg, int size);
1644 int (*socket_recvmsg) (struct socket *sock,
1645 struct msghdr *msg, int size, int flags);
1646 int (*socket_getsockname) (struct socket *sock);
1647 int (*socket_getpeername) (struct socket *sock);
1648 int (*socket_getsockopt) (struct socket *sock, int level, int optname);
1649 int (*socket_setsockopt) (struct socket *sock, int level, int optname);
1650 int (*socket_shutdown) (struct socket *sock, int how);
1651 int (*socket_sock_rcv_skb) (struct sock *sk, struct sk_buff *skb);
1652 int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
1653 int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
1654 int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
1655 void (*sk_free_security) (struct sock *sk);
1656 void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
1657 void (*sk_getsecid) (struct sock *sk, u32 *secid);
1658 void (*sock_graft) (struct sock *sk, struct socket *parent);
1659 int (*inet_conn_request) (struct sock *sk, struct sk_buff *skb,
1660 struct request_sock *req);
1661 void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req);
1662 void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb);
1663 void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
1664 int (*tun_dev_create)(void);
1665 void (*tun_dev_post_create)(struct sock *sk);
1666 int (*tun_dev_attach)(struct sock *sk);
1667 #endif /* CONFIG_SECURITY_NETWORK */
1669 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1670 int (*xfrm_policy_alloc_security) (struct xfrm_sec_ctx **ctxp,
1671 struct xfrm_user_sec_ctx *sec_ctx);
1672 int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
1673 void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
1674 int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
1675 int (*xfrm_state_alloc_security) (struct xfrm_state *x,
1676 struct xfrm_user_sec_ctx *sec_ctx,
1678 void (*xfrm_state_free_security) (struct xfrm_state *x);
1679 int (*xfrm_state_delete_security) (struct xfrm_state *x);
1680 int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1681 int (*xfrm_state_pol_flow_match) (struct xfrm_state *x,
1682 struct xfrm_policy *xp,
1684 int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall);
1685 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1687 /* key management security hooks */
1689 int (*key_alloc) (struct key *key, const struct cred *cred, unsigned long flags);
1690 void (*key_free) (struct key *key);
1691 int (*key_permission) (key_ref_t key_ref,
1692 const struct cred *cred,
1694 int (*key_getsecurity)(struct key *key, char **_buffer);
1695 int (*key_session_to_parent)(const struct cred *cred,
1696 const struct cred *parent_cred,
1698 #endif /* CONFIG_KEYS */
1701 int (*audit_rule_init) (u32 field, u32 op, char *rulestr, void **lsmrule);
1702 int (*audit_rule_known) (struct audit_krule *krule);
1703 int (*audit_rule_match) (u32 secid, u32 field, u32 op, void *lsmrule,
1704 struct audit_context *actx);
1705 void (*audit_rule_free) (void *lsmrule);
1706 #endif /* CONFIG_AUDIT */
1710 extern int security_init(void);
1711 extern int security_module_enable(struct security_operations *ops);
1712 extern int register_security(struct security_operations *ops);
1714 /* Security operations */
1715 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
1716 int security_ptrace_traceme(struct task_struct *parent);
1717 int security_capget(struct task_struct *target,
1718 kernel_cap_t *effective,
1719 kernel_cap_t *inheritable,
1720 kernel_cap_t *permitted);
1721 int security_capset(struct cred *new, const struct cred *old,
1722 const kernel_cap_t *effective,
1723 const kernel_cap_t *inheritable,
1724 const kernel_cap_t *permitted);
1725 int security_capable(int cap);
1726 int security_real_capable(struct task_struct *tsk, int cap);
1727 int security_real_capable_noaudit(struct task_struct *tsk, int cap);
1728 int security_acct(struct file *file);
1729 int security_sysctl(struct ctl_table *table, int op);
1730 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
1731 int security_quota_on(struct dentry *dentry);
1732 int security_syslog(int type, bool from_file);
1733 int security_settime(struct timespec *ts, struct timezone *tz);
1734 int security_vm_enough_memory(long pages);
1735 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
1736 int security_vm_enough_memory_kern(long pages);
1737 int security_bprm_set_creds(struct linux_binprm *bprm);
1738 int security_bprm_check(struct linux_binprm *bprm);
1739 void security_bprm_committing_creds(struct linux_binprm *bprm);
1740 void security_bprm_committed_creds(struct linux_binprm *bprm);
1741 int security_bprm_secureexec(struct linux_binprm *bprm);
1742 int security_sb_alloc(struct super_block *sb);
1743 void security_sb_free(struct super_block *sb);
1744 int security_sb_copy_data(char *orig, char *copy);
1745 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
1746 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
1747 int security_sb_statfs(struct dentry *dentry);
1748 int security_sb_mount(char *dev_name, struct path *path,
1749 char *type, unsigned long flags, void *data);
1750 int security_sb_umount(struct vfsmount *mnt, int flags);
1751 int security_sb_pivotroot(struct path *old_path, struct path *new_path);
1752 void security_sb_post_pivotroot(struct path *old_path, struct path *new_path);
1753 int security_sb_set_mnt_opts(struct super_block *sb, struct security_mnt_opts *opts);
1754 void security_sb_clone_mnt_opts(const struct super_block *oldsb,
1755 struct super_block *newsb);
1756 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
1758 int security_inode_alloc(struct inode *inode);
1759 void security_inode_free(struct inode *inode);
1760 int security_inode_init_security(struct inode *inode, struct inode *dir,
1761 char **name, void **value, size_t *len);
1762 int security_inode_create(struct inode *dir, struct dentry *dentry, int mode);
1763 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1764 struct dentry *new_dentry);
1765 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
1766 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
1767 const char *old_name);
1768 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode);
1769 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
1770 int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev);
1771 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
1772 struct inode *new_dir, struct dentry *new_dentry);
1773 int security_inode_readlink(struct dentry *dentry);
1774 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
1775 int security_inode_permission(struct inode *inode, int mask);
1776 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
1777 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
1778 void security_inode_delete(struct inode *inode);
1779 int security_inode_setxattr(struct dentry *dentry, const char *name,
1780 const void *value, size_t size, int flags);
1781 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1782 const void *value, size_t size, int flags);
1783 int security_inode_getxattr(struct dentry *dentry, const char *name);
1784 int security_inode_listxattr(struct dentry *dentry);
1785 int security_inode_removexattr(struct dentry *dentry, const char *name);
1786 int security_inode_need_killpriv(struct dentry *dentry);
1787 int security_inode_killpriv(struct dentry *dentry);
1788 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
1789 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1790 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
1791 void security_inode_getsecid(const struct inode *inode, u32 *secid);
1792 int security_file_permission(struct file *file, int mask);
1793 int security_file_alloc(struct file *file);
1794 void security_file_free(struct file *file);
1795 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
1796 int security_file_mmap(struct file *file, unsigned long reqprot,
1797 unsigned long prot, unsigned long flags,
1798 unsigned long addr, unsigned long addr_only);
1799 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1800 unsigned long prot);
1801 int security_file_lock(struct file *file, unsigned int cmd);
1802 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
1803 int security_file_set_fowner(struct file *file);
1804 int security_file_send_sigiotask(struct task_struct *tsk,
1805 struct fown_struct *fown, int sig);
1806 int security_file_receive(struct file *file);
1807 int security_dentry_open(struct file *file, const struct cred *cred);
1808 int security_task_create(unsigned long clone_flags);
1809 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
1810 void security_cred_free(struct cred *cred);
1811 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
1812 void security_commit_creds(struct cred *new, const struct cred *old);
1813 void security_transfer_creds(struct cred *new, const struct cred *old);
1814 int security_kernel_act_as(struct cred *new, u32 secid);
1815 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
1816 int security_kernel_module_request(char *kmod_name);
1817 int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags);
1818 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1820 int security_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags);
1821 int security_task_setpgid(struct task_struct *p, pid_t pgid);
1822 int security_task_getpgid(struct task_struct *p);
1823 int security_task_getsid(struct task_struct *p);
1824 void security_task_getsecid(struct task_struct *p, u32 *secid);
1825 int security_task_setgroups(struct group_info *group_info);
1826 int security_task_setnice(struct task_struct *p, int nice);
1827 int security_task_setioprio(struct task_struct *p, int ioprio);
1828 int security_task_getioprio(struct task_struct *p);
1829 int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim);
1830 int security_task_setscheduler(struct task_struct *p,
1831 int policy, struct sched_param *lp);
1832 int security_task_getscheduler(struct task_struct *p);
1833 int security_task_movememory(struct task_struct *p);
1834 int security_task_kill(struct task_struct *p, struct siginfo *info,
1835 int sig, u32 secid);
1836 int security_task_wait(struct task_struct *p);
1837 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1838 unsigned long arg4, unsigned long arg5);
1839 void security_task_to_inode(struct task_struct *p, struct inode *inode);
1840 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
1841 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
1842 int security_msg_msg_alloc(struct msg_msg *msg);
1843 void security_msg_msg_free(struct msg_msg *msg);
1844 int security_msg_queue_alloc(struct msg_queue *msq);
1845 void security_msg_queue_free(struct msg_queue *msq);
1846 int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
1847 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
1848 int security_msg_queue_msgsnd(struct msg_queue *msq,
1849 struct msg_msg *msg, int msqflg);
1850 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1851 struct task_struct *target, long type, int mode);
1852 int security_shm_alloc(struct shmid_kernel *shp);
1853 void security_shm_free(struct shmid_kernel *shp);
1854 int security_shm_associate(struct shmid_kernel *shp, int shmflg);
1855 int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
1856 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
1857 int security_sem_alloc(struct sem_array *sma);
1858 void security_sem_free(struct sem_array *sma);
1859 int security_sem_associate(struct sem_array *sma, int semflg);
1860 int security_sem_semctl(struct sem_array *sma, int cmd);
1861 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1862 unsigned nsops, int alter);
1863 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
1864 int security_getprocattr(struct task_struct *p, char *name, char **value);
1865 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
1866 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
1867 int security_netlink_recv(struct sk_buff *skb, int cap);
1868 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
1869 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
1870 void security_release_secctx(char *secdata, u32 seclen);
1872 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
1873 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
1874 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
1875 #else /* CONFIG_SECURITY */
1876 struct security_mnt_opts {
1879 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
1883 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
1888 * This is the default capabilities functionality. Most of these functions
1889 * are just stubbed out, but a few must call the proper capable code.
1892 static inline int security_init(void)
1897 static inline int security_ptrace_access_check(struct task_struct *child,
1900 return cap_ptrace_access_check(child, mode);
1903 static inline int security_ptrace_traceme(struct task_struct *parent)
1905 return cap_ptrace_traceme(parent);
1908 static inline int security_capget(struct task_struct *target,
1909 kernel_cap_t *effective,
1910 kernel_cap_t *inheritable,
1911 kernel_cap_t *permitted)
1913 return cap_capget(target, effective, inheritable, permitted);
1916 static inline int security_capset(struct cred *new,
1917 const struct cred *old,
1918 const kernel_cap_t *effective,
1919 const kernel_cap_t *inheritable,
1920 const kernel_cap_t *permitted)
1922 return cap_capset(new, old, effective, inheritable, permitted);
1925 static inline int security_capable(int cap)
1927 return cap_capable(current, current_cred(), cap, SECURITY_CAP_AUDIT);
1930 static inline int security_real_capable(struct task_struct *tsk, int cap)
1935 ret = cap_capable(tsk, __task_cred(tsk), cap, SECURITY_CAP_AUDIT);
1941 int security_real_capable_noaudit(struct task_struct *tsk, int cap)
1946 ret = cap_capable(tsk, __task_cred(tsk), cap,
1947 SECURITY_CAP_NOAUDIT);
1952 static inline int security_acct(struct file *file)
1957 static inline int security_sysctl(struct ctl_table *table, int op)
1962 static inline int security_quotactl(int cmds, int type, int id,
1963 struct super_block *sb)
1968 static inline int security_quota_on(struct dentry *dentry)
1973 static inline int security_syslog(int type, bool from_file)
1975 return cap_syslog(type, from_file);
1978 static inline int security_settime(struct timespec *ts, struct timezone *tz)
1980 return cap_settime(ts, tz);
1983 static inline int security_vm_enough_memory(long pages)
1985 WARN_ON(current->mm == NULL);
1986 return cap_vm_enough_memory(current->mm, pages);
1989 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
1991 WARN_ON(mm == NULL);
1992 return cap_vm_enough_memory(mm, pages);
1995 static inline int security_vm_enough_memory_kern(long pages)
1997 /* If current->mm is a kernel thread then we will pass NULL,
1998 for this specific case that is fine */
1999 return cap_vm_enough_memory(current->mm, pages);
2002 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
2004 return cap_bprm_set_creds(bprm);
2007 static inline int security_bprm_check(struct linux_binprm *bprm)
2012 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
2016 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
2020 static inline int security_bprm_secureexec(struct linux_binprm *bprm)
2022 return cap_bprm_secureexec(bprm);
2025 static inline int security_sb_alloc(struct super_block *sb)
2030 static inline void security_sb_free(struct super_block *sb)
2033 static inline int security_sb_copy_data(char *orig, char *copy)
2038 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
2043 static inline int security_sb_show_options(struct seq_file *m,
2044 struct super_block *sb)
2049 static inline int security_sb_statfs(struct dentry *dentry)
2054 static inline int security_sb_mount(char *dev_name, struct path *path,
2055 char *type, unsigned long flags,
2061 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
2066 static inline int security_sb_pivotroot(struct path *old_path,
2067 struct path *new_path)
2072 static inline void security_sb_post_pivotroot(struct path *old_path,
2073 struct path *new_path)
2076 static inline int security_sb_set_mnt_opts(struct super_block *sb,
2077 struct security_mnt_opts *opts)
2082 static inline void security_sb_clone_mnt_opts(const struct super_block *oldsb,
2083 struct super_block *newsb)
2086 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
2091 static inline int security_inode_alloc(struct inode *inode)
2096 static inline void security_inode_free(struct inode *inode)
2099 static inline int security_inode_init_security(struct inode *inode,
2108 static inline int security_inode_create(struct inode *dir,
2109 struct dentry *dentry,
2115 static inline int security_inode_link(struct dentry *old_dentry,
2117 struct dentry *new_dentry)
2122 static inline int security_inode_unlink(struct inode *dir,
2123 struct dentry *dentry)
2128 static inline int security_inode_symlink(struct inode *dir,
2129 struct dentry *dentry,
2130 const char *old_name)
2135 static inline int security_inode_mkdir(struct inode *dir,
2136 struct dentry *dentry,
2142 static inline int security_inode_rmdir(struct inode *dir,
2143 struct dentry *dentry)
2148 static inline int security_inode_mknod(struct inode *dir,
2149 struct dentry *dentry,
2150 int mode, dev_t dev)
2155 static inline int security_inode_rename(struct inode *old_dir,
2156 struct dentry *old_dentry,
2157 struct inode *new_dir,
2158 struct dentry *new_dentry)
2163 static inline int security_inode_readlink(struct dentry *dentry)
2168 static inline int security_inode_follow_link(struct dentry *dentry,
2169 struct nameidata *nd)
2174 static inline int security_inode_permission(struct inode *inode, int mask)
2179 static inline int security_inode_setattr(struct dentry *dentry,
2185 static inline int security_inode_getattr(struct vfsmount *mnt,
2186 struct dentry *dentry)
2191 static inline void security_inode_delete(struct inode *inode)
2194 static inline int security_inode_setxattr(struct dentry *dentry,
2195 const char *name, const void *value, size_t size, int flags)
2197 return cap_inode_setxattr(dentry, name, value, size, flags);
2200 static inline void security_inode_post_setxattr(struct dentry *dentry,
2201 const char *name, const void *value, size_t size, int flags)
2204 static inline int security_inode_getxattr(struct dentry *dentry,
2210 static inline int security_inode_listxattr(struct dentry *dentry)
2215 static inline int security_inode_removexattr(struct dentry *dentry,
2218 return cap_inode_removexattr(dentry, name);
2221 static inline int security_inode_need_killpriv(struct dentry *dentry)
2223 return cap_inode_need_killpriv(dentry);
2226 static inline int security_inode_killpriv(struct dentry *dentry)
2228 return cap_inode_killpriv(dentry);
2231 static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
2236 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
2241 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
2246 static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
2251 static inline int security_file_permission(struct file *file, int mask)
2256 static inline int security_file_alloc(struct file *file)
2261 static inline void security_file_free(struct file *file)
2264 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
2270 static inline int security_file_mmap(struct file *file, unsigned long reqprot,
2272 unsigned long flags,
2274 unsigned long addr_only)
2276 return cap_file_mmap(file, reqprot, prot, flags, addr, addr_only);
2279 static inline int security_file_mprotect(struct vm_area_struct *vma,
2280 unsigned long reqprot,
2286 static inline int security_file_lock(struct file *file, unsigned int cmd)
2291 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
2297 static inline int security_file_set_fowner(struct file *file)
2302 static inline int security_file_send_sigiotask(struct task_struct *tsk,
2303 struct fown_struct *fown,
2309 static inline int security_file_receive(struct file *file)
2314 static inline int security_dentry_open(struct file *file,
2315 const struct cred *cred)
2320 static inline int security_task_create(unsigned long clone_flags)
2325 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
2330 static inline void security_cred_free(struct cred *cred)
2333 static inline int security_prepare_creds(struct cred *new,
2334 const struct cred *old,
2340 static inline void security_commit_creds(struct cred *new,
2341 const struct cred *old)
2345 static inline void security_transfer_creds(struct cred *new,
2346 const struct cred *old)
2350 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
2355 static inline int security_kernel_create_files_as(struct cred *cred,
2356 struct inode *inode)
2361 static inline int security_kernel_module_request(char *kmod_name)
2366 static inline int security_task_setuid(uid_t id0, uid_t id1, uid_t id2,
2372 static inline int security_task_fix_setuid(struct cred *new,
2373 const struct cred *old,
2376 return cap_task_fix_setuid(new, old, flags);
2379 static inline int security_task_setgid(gid_t id0, gid_t id1, gid_t id2,
2385 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
2390 static inline int security_task_getpgid(struct task_struct *p)
2395 static inline int security_task_getsid(struct task_struct *p)
2400 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
2405 static inline int security_task_setgroups(struct group_info *group_info)
2410 static inline int security_task_setnice(struct task_struct *p, int nice)
2412 return cap_task_setnice(p, nice);
2415 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
2417 return cap_task_setioprio(p, ioprio);
2420 static inline int security_task_getioprio(struct task_struct *p)
2425 static inline int security_task_setrlimit(unsigned int resource,
2426 struct rlimit *new_rlim)
2431 static inline int security_task_setscheduler(struct task_struct *p,
2433 struct sched_param *lp)
2435 return cap_task_setscheduler(p, policy, lp);
2438 static inline int security_task_getscheduler(struct task_struct *p)
2443 static inline int security_task_movememory(struct task_struct *p)
2448 static inline int security_task_kill(struct task_struct *p,
2449 struct siginfo *info, int sig,
2455 static inline int security_task_wait(struct task_struct *p)
2460 static inline int security_task_prctl(int option, unsigned long arg2,
2465 return cap_task_prctl(option, arg2, arg3, arg3, arg5);
2468 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
2471 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
2477 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
2482 static inline int security_msg_msg_alloc(struct msg_msg *msg)
2487 static inline void security_msg_msg_free(struct msg_msg *msg)
2490 static inline int security_msg_queue_alloc(struct msg_queue *msq)
2495 static inline void security_msg_queue_free(struct msg_queue *msq)
2498 static inline int security_msg_queue_associate(struct msg_queue *msq,
2504 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
2509 static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
2510 struct msg_msg *msg, int msqflg)
2515 static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
2516 struct msg_msg *msg,
2517 struct task_struct *target,
2518 long type, int mode)
2523 static inline int security_shm_alloc(struct shmid_kernel *shp)
2528 static inline void security_shm_free(struct shmid_kernel *shp)
2531 static inline int security_shm_associate(struct shmid_kernel *shp,
2537 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
2542 static inline int security_shm_shmat(struct shmid_kernel *shp,
2543 char __user *shmaddr, int shmflg)
2548 static inline int security_sem_alloc(struct sem_array *sma)
2553 static inline void security_sem_free(struct sem_array *sma)
2556 static inline int security_sem_associate(struct sem_array *sma, int semflg)
2561 static inline int security_sem_semctl(struct sem_array *sma, int cmd)
2566 static inline int security_sem_semop(struct sem_array *sma,
2567 struct sembuf *sops, unsigned nsops,
2573 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
2576 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
2581 static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2586 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
2588 return cap_netlink_send(sk, skb);
2591 static inline int security_netlink_recv(struct sk_buff *skb, int cap)
2593 return cap_netlink_recv(skb, cap);
2596 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2601 static inline int security_secctx_to_secid(const char *secdata,
2608 static inline void security_release_secctx(char *secdata, u32 seclen)
2612 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
2616 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
2620 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
2624 #endif /* CONFIG_SECURITY */
2626 #ifdef CONFIG_SECURITY_NETWORK
2628 int security_unix_stream_connect(struct socket *sock, struct socket *other,
2629 struct sock *newsk);
2630 int security_unix_may_send(struct socket *sock, struct socket *other);
2631 int security_socket_create(int family, int type, int protocol, int kern);
2632 int security_socket_post_create(struct socket *sock, int family,
2633 int type, int protocol, int kern);
2634 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
2635 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
2636 int security_socket_listen(struct socket *sock, int backlog);
2637 int security_socket_accept(struct socket *sock, struct socket *newsock);
2638 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
2639 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2640 int size, int flags);
2641 int security_socket_getsockname(struct socket *sock);
2642 int security_socket_getpeername(struct socket *sock);
2643 int security_socket_getsockopt(struct socket *sock, int level, int optname);
2644 int security_socket_setsockopt(struct socket *sock, int level, int optname);
2645 int security_socket_shutdown(struct socket *sock, int how);
2646 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
2647 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2648 int __user *optlen, unsigned len);
2649 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
2650 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
2651 void security_sk_free(struct sock *sk);
2652 void security_sk_clone(const struct sock *sk, struct sock *newsk);
2653 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
2654 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
2655 void security_sock_graft(struct sock*sk, struct socket *parent);
2656 int security_inet_conn_request(struct sock *sk,
2657 struct sk_buff *skb, struct request_sock *req);
2658 void security_inet_csk_clone(struct sock *newsk,
2659 const struct request_sock *req);
2660 void security_inet_conn_established(struct sock *sk,
2661 struct sk_buff *skb);
2662 int security_tun_dev_create(void);
2663 void security_tun_dev_post_create(struct sock *sk);
2664 int security_tun_dev_attach(struct sock *sk);
2666 #else /* CONFIG_SECURITY_NETWORK */
2667 static inline int security_unix_stream_connect(struct socket *sock,
2668 struct socket *other,
2674 static inline int security_unix_may_send(struct socket *sock,
2675 struct socket *other)
2680 static inline int security_socket_create(int family, int type,
2681 int protocol, int kern)
2686 static inline int security_socket_post_create(struct socket *sock,
2689 int protocol, int kern)
2694 static inline int security_socket_bind(struct socket *sock,
2695 struct sockaddr *address,
2701 static inline int security_socket_connect(struct socket *sock,
2702 struct sockaddr *address,
2708 static inline int security_socket_listen(struct socket *sock, int backlog)
2713 static inline int security_socket_accept(struct socket *sock,
2714 struct socket *newsock)
2719 static inline int security_socket_sendmsg(struct socket *sock,
2720 struct msghdr *msg, int size)
2725 static inline int security_socket_recvmsg(struct socket *sock,
2726 struct msghdr *msg, int size,
2732 static inline int security_socket_getsockname(struct socket *sock)
2737 static inline int security_socket_getpeername(struct socket *sock)
2742 static inline int security_socket_getsockopt(struct socket *sock,
2743 int level, int optname)
2748 static inline int security_socket_setsockopt(struct socket *sock,
2749 int level, int optname)
2754 static inline int security_socket_shutdown(struct socket *sock, int how)
2758 static inline int security_sock_rcv_skb(struct sock *sk,
2759 struct sk_buff *skb)
2764 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2765 int __user *optlen, unsigned len)
2767 return -ENOPROTOOPT;
2770 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
2772 return -ENOPROTOOPT;
2775 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2780 static inline void security_sk_free(struct sock *sk)
2784 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
2788 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
2792 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2796 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
2800 static inline int security_inet_conn_request(struct sock *sk,
2801 struct sk_buff *skb, struct request_sock *req)
2806 static inline void security_inet_csk_clone(struct sock *newsk,
2807 const struct request_sock *req)
2811 static inline void security_inet_conn_established(struct sock *sk,
2812 struct sk_buff *skb)
2816 static inline int security_tun_dev_create(void)
2821 static inline void security_tun_dev_post_create(struct sock *sk)
2825 static inline int security_tun_dev_attach(struct sock *sk)
2829 #endif /* CONFIG_SECURITY_NETWORK */
2831 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2833 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx);
2834 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
2835 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
2836 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
2837 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
2838 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2839 struct xfrm_sec_ctx *polsec, u32 secid);
2840 int security_xfrm_state_delete(struct xfrm_state *x);
2841 void security_xfrm_state_free(struct xfrm_state *x);
2842 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
2843 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2844 struct xfrm_policy *xp, struct flowi *fl);
2845 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
2846 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
2848 #else /* CONFIG_SECURITY_NETWORK_XFRM */
2850 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
2855 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
2860 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
2864 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
2869 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
2870 struct xfrm_user_sec_ctx *sec_ctx)
2875 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2876 struct xfrm_sec_ctx *polsec, u32 secid)
2881 static inline void security_xfrm_state_free(struct xfrm_state *x)
2885 static inline int security_xfrm_state_delete(struct xfrm_state *x)
2890 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
2895 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2896 struct xfrm_policy *xp, struct flowi *fl)
2901 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
2906 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2910 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2912 #ifdef CONFIG_SECURITY_PATH
2913 int security_path_unlink(struct path *dir, struct dentry *dentry);
2914 int security_path_mkdir(struct path *dir, struct dentry *dentry, int mode);
2915 int security_path_rmdir(struct path *dir, struct dentry *dentry);
2916 int security_path_mknod(struct path *dir, struct dentry *dentry, int mode,
2918 int security_path_truncate(struct path *path, loff_t length,
2919 unsigned int time_attrs);
2920 int security_path_symlink(struct path *dir, struct dentry *dentry,
2921 const char *old_name);
2922 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
2923 struct dentry *new_dentry);
2924 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
2925 struct path *new_dir, struct dentry *new_dentry);
2926 int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
2928 int security_path_chown(struct path *path, uid_t uid, gid_t gid);
2929 int security_path_chroot(struct path *path);
2930 #else /* CONFIG_SECURITY_PATH */
2931 static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
2936 static inline int security_path_mkdir(struct path *dir, struct dentry *dentry,
2942 static inline int security_path_rmdir(struct path *dir, struct dentry *dentry)
2947 static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
2948 int mode, unsigned int dev)
2953 static inline int security_path_truncate(struct path *path, loff_t length,
2954 unsigned int time_attrs)
2959 static inline int security_path_symlink(struct path *dir, struct dentry *dentry,
2960 const char *old_name)
2965 static inline int security_path_link(struct dentry *old_dentry,
2966 struct path *new_dir,
2967 struct dentry *new_dentry)
2972 static inline int security_path_rename(struct path *old_dir,
2973 struct dentry *old_dentry,
2974 struct path *new_dir,
2975 struct dentry *new_dentry)
2980 static inline int security_path_chmod(struct dentry *dentry,
2981 struct vfsmount *mnt,
2987 static inline int security_path_chown(struct path *path, uid_t uid, gid_t gid)
2992 static inline int security_path_chroot(struct path *path)
2996 #endif /* CONFIG_SECURITY_PATH */
2999 #ifdef CONFIG_SECURITY
3001 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
3002 void security_key_free(struct key *key);
3003 int security_key_permission(key_ref_t key_ref,
3004 const struct cred *cred, key_perm_t perm);
3005 int security_key_getsecurity(struct key *key, char **_buffer);
3006 int security_key_session_to_parent(const struct cred *cred,
3007 const struct cred *parent_cred,
3012 static inline int security_key_alloc(struct key *key,
3013 const struct cred *cred,
3014 unsigned long flags)
3019 static inline void security_key_free(struct key *key)
3023 static inline int security_key_permission(key_ref_t key_ref,
3024 const struct cred *cred,
3030 static inline int security_key_getsecurity(struct key *key, char **_buffer)
3036 static inline int security_key_session_to_parent(const struct cred *cred,
3037 const struct cred *parent_cred,
3044 #endif /* CONFIG_KEYS */
3047 #ifdef CONFIG_SECURITY
3048 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
3049 int security_audit_rule_known(struct audit_krule *krule);
3050 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
3051 struct audit_context *actx);
3052 void security_audit_rule_free(void *lsmrule);
3056 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
3062 static inline int security_audit_rule_known(struct audit_krule *krule)
3067 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
3068 void *lsmrule, struct audit_context *actx)
3073 static inline void security_audit_rule_free(void *lsmrule)
3076 #endif /* CONFIG_SECURITY */
3077 #endif /* CONFIG_AUDIT */
3079 #ifdef CONFIG_SECURITYFS
3081 extern struct dentry *securityfs_create_file(const char *name, mode_t mode,
3082 struct dentry *parent, void *data,
3083 const struct file_operations *fops);
3084 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
3085 extern void securityfs_remove(struct dentry *dentry);
3087 #else /* CONFIG_SECURITYFS */
3089 static inline struct dentry *securityfs_create_dir(const char *name,
3090 struct dentry *parent)
3092 return ERR_PTR(-ENODEV);
3095 static inline struct dentry *securityfs_create_file(const char *name,
3097 struct dentry *parent,
3099 const struct file_operations *fops)
3101 return ERR_PTR(-ENODEV);
3104 static inline void securityfs_remove(struct dentry *dentry)
3109 #ifdef CONFIG_SECURITY
3111 static inline char *alloc_secdata(void)
3113 return (char *)get_zeroed_page(GFP_KERNEL);
3116 static inline void free_secdata(void *secdata)
3118 free_page((unsigned long)secdata);
3123 static inline char *alloc_secdata(void)
3128 static inline void free_secdata(void *secdata)
3130 #endif /* CONFIG_SECURITY */
3132 #endif /* ! __LINUX_SECURITY_H */