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.
281 * Set the security relevant mount options used for a superblock
282 * @sb the superblock to set security mount options for
283 * @opts binary data structure containing all lsm mount data
284 * @sb_clone_mnt_opts:
285 * Copy all security options from a given superblock to another
286 * @oldsb old superblock which contain information to clone
287 * @newsb new superblock which needs filled in
288 * @sb_parse_opts_str:
289 * Parse a string of security data filling in the opts structure
290 * @options string containing all mount options known by the LSM
291 * @opts binary data structure usable by the LSM
293 * Security hooks for inode operations.
295 * @inode_alloc_security:
296 * Allocate and attach a security structure to @inode->i_security. The
297 * i_security field is initialized to NULL when the inode structure is
299 * @inode contains the inode structure.
300 * Return 0 if operation was successful.
301 * @inode_free_security:
302 * @inode contains the inode structure.
303 * Deallocate the inode security structure and set @inode->i_security to
305 * @inode_init_security:
306 * Obtain the security attribute name suffix and value to set on a newly
307 * created inode and set up the incore security field for the new inode.
308 * This hook is called by the fs code as part of the inode creation
309 * transaction and provides for atomic labeling of the inode, unlike
310 * the post_create/mkdir/... hooks called by the VFS. The hook function
311 * is expected to allocate the name and value via kmalloc, with the caller
312 * being responsible for calling kfree after using them.
313 * If the security module does not use security attributes or does
314 * not wish to put a security attribute on this particular inode,
315 * then it should return -EOPNOTSUPP to skip this processing.
316 * @inode contains the inode structure of the newly created inode.
317 * @dir contains the inode structure of the parent directory.
318 * @name will be set to the allocated name suffix (e.g. selinux).
319 * @value will be set to the allocated attribute value.
320 * @len will be set to the length of the value.
321 * Returns 0 if @name and @value have been successfully set,
322 * -EOPNOTSUPP if no security attribute is needed, or
323 * -ENOMEM on memory allocation failure.
325 * Check permission to create a regular file.
326 * @dir contains inode structure of the parent of the new file.
327 * @dentry contains the dentry structure for the file to be created.
328 * @mode contains the file mode of the file to be created.
329 * Return 0 if permission is granted.
331 * Check permission before creating a new hard link to a file.
332 * @old_dentry contains the dentry structure for an existing link to the file.
333 * @dir contains the inode structure of the parent directory of the new link.
334 * @new_dentry contains the dentry structure for the new link.
335 * Return 0 if permission is granted.
337 * Check permission before creating a new hard link to a file.
338 * @old_dentry contains the dentry structure for an existing link
340 * @new_dir contains the path structure of the parent directory of
342 * @new_dentry contains the dentry structure for the new link.
343 * Return 0 if permission is granted.
345 * Check the permission to remove a hard link to a file.
346 * @dir contains the inode structure of parent directory of the file.
347 * @dentry contains the dentry structure for file to be unlinked.
348 * Return 0 if permission is granted.
350 * Check the permission to remove a hard link to a file.
351 * @dir contains the path structure of parent directory of the file.
352 * @dentry contains the dentry structure for file to be unlinked.
353 * Return 0 if permission is granted.
355 * Check the permission to create a symbolic link to a file.
356 * @dir contains the inode structure of parent directory of the symbolic link.
357 * @dentry contains the dentry structure of the symbolic link.
358 * @old_name contains the pathname of file.
359 * Return 0 if permission is granted.
361 * Check the permission to create a symbolic link to a file.
362 * @dir contains the path structure of parent directory of
364 * @dentry contains the dentry structure of the symbolic link.
365 * @old_name contains the pathname of file.
366 * Return 0 if permission is granted.
368 * Check permissions to create a new directory in the existing directory
369 * associated with inode strcture @dir.
370 * @dir containst the inode structure of parent of the directory to be created.
371 * @dentry contains the dentry structure of new directory.
372 * @mode contains the mode of new directory.
373 * Return 0 if permission is granted.
375 * Check permissions to create a new directory in the existing directory
376 * associated with path strcture @path.
377 * @dir containst the path structure of parent of the directory
379 * @dentry contains the dentry structure of new directory.
380 * @mode contains the mode of new directory.
381 * Return 0 if permission is granted.
383 * Check the permission to remove a directory.
384 * @dir contains the inode structure of parent of the directory to be removed.
385 * @dentry contains the dentry structure of directory to be removed.
386 * Return 0 if permission is granted.
388 * Check the permission to remove a directory.
389 * @dir contains the path structure of parent of the directory to be
391 * @dentry contains the dentry structure of directory to be removed.
392 * Return 0 if permission is granted.
394 * Check permissions when creating a special file (or a socket or a fifo
395 * file created via the mknod system call). Note that if mknod operation
396 * is being done for a regular file, then the create hook will be called
398 * @dir contains the inode structure of parent of the new file.
399 * @dentry contains the dentry structure of the new file.
400 * @mode contains the mode of the new file.
401 * @dev contains the device number.
402 * Return 0 if permission is granted.
404 * Check permissions when creating a file. Note that this hook is called
405 * even if mknod operation is being done for a regular file.
406 * @dir contains the path structure of parent of the new file.
407 * @dentry contains the dentry structure of the new file.
408 * @mode contains the mode of the new file.
409 * @dev contains the undecoded device number. Use new_decode_dev() to get
410 * the decoded device number.
411 * Return 0 if permission is granted.
413 * Check for permission to rename a file or directory.
414 * @old_dir contains the inode structure for parent of the old link.
415 * @old_dentry contains the dentry structure of the old link.
416 * @new_dir contains the inode structure for parent of the new link.
417 * @new_dentry contains the dentry structure of the new link.
418 * Return 0 if permission is granted.
420 * Check for permission to rename a file or directory.
421 * @old_dir contains the path structure for parent of the old link.
422 * @old_dentry contains the dentry structure of the old link.
423 * @new_dir contains the path structure for parent of the new link.
424 * @new_dentry contains the dentry structure of the new link.
425 * Return 0 if permission is granted.
427 * Check for permission to change DAC's permission of a file or directory.
428 * @dentry contains the dentry structure.
429 * @mnt contains the vfsmnt structure.
430 * @mode contains DAC's mode.
431 * Return 0 if permission is granted.
433 * Check for permission to change owner/group of a file or directory.
434 * @path contains the path structure.
435 * @uid contains new owner's ID.
436 * @gid contains new group's ID.
437 * Return 0 if permission is granted.
439 * Check for permission to change root directory.
440 * @path contains the path structure.
441 * Return 0 if permission is granted.
443 * Check the permission to read the symbolic link.
444 * @dentry contains the dentry structure for the file link.
445 * Return 0 if permission is granted.
446 * @inode_follow_link:
447 * Check permission to follow a symbolic link when looking up a pathname.
448 * @dentry contains the dentry structure for the link.
449 * @nd contains the nameidata structure for the parent directory.
450 * Return 0 if permission is granted.
452 * Check permission before accessing an inode. This hook is called by the
453 * existing Linux permission function, so a security module can use it to
454 * provide additional checking for existing Linux permission checks.
455 * Notice that this hook is called when a file is opened (as well as many
456 * other operations), whereas the file_security_ops permission hook is
457 * called when the actual read/write operations are performed.
458 * @inode contains the inode structure to check.
459 * @mask contains the permission mask.
460 * @nd contains the nameidata (may be NULL).
461 * Return 0 if permission is granted.
463 * Check permission before setting file attributes. Note that the kernel
464 * call to notify_change is performed from several locations, whenever
465 * file attributes change (such as when a file is truncated, chown/chmod
466 * operations, transferring disk quotas, etc).
467 * @dentry contains the dentry structure for the file.
468 * @attr is the iattr structure containing the new file attributes.
469 * Return 0 if permission is granted.
471 * Check permission before truncating a file.
472 * @path contains the path structure for the file.
473 * @length is the new length of the file.
474 * @time_attrs is the flags passed to do_truncate().
475 * Return 0 if permission is granted.
477 * Check permission before obtaining file attributes.
478 * @mnt is the vfsmount where the dentry was looked up
479 * @dentry contains the dentry structure for the file.
480 * Return 0 if permission is granted.
482 * Check permission before setting the extended attributes
483 * @value identified by @name for @dentry.
484 * Return 0 if permission is granted.
485 * @inode_post_setxattr:
486 * Update inode security field after successful setxattr operation.
487 * @value identified by @name for @dentry.
489 * Check permission before obtaining the extended attributes
490 * identified by @name for @dentry.
491 * Return 0 if permission is granted.
493 * Check permission before obtaining the list of extended attribute
495 * Return 0 if permission is granted.
496 * @inode_removexattr:
497 * Check permission before removing the extended attribute
498 * identified by @name for @dentry.
499 * Return 0 if permission is granted.
500 * @inode_getsecurity:
501 * Retrieve a copy of the extended attribute representation of the
502 * security label associated with @name for @inode via @buffer. Note that
503 * @name is the remainder of the attribute name after the security prefix
504 * has been removed. @alloc is used to specify of the call should return a
505 * value via the buffer or just the value length Return size of buffer on
507 * @inode_setsecurity:
508 * Set the security label associated with @name for @inode from the
509 * extended attribute value @value. @size indicates the size of the
510 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
511 * Note that @name is the remainder of the attribute name after the
512 * security. prefix has been removed.
513 * Return 0 on success.
514 * @inode_listsecurity:
515 * Copy the extended attribute names for the security labels
516 * associated with @inode into @buffer. The maximum size of @buffer
517 * is specified by @buffer_size. @buffer may be NULL to request
518 * the size of the buffer required.
519 * Returns number of bytes used/required on success.
520 * @inode_need_killpriv:
521 * Called when an inode has been changed.
522 * @dentry is the dentry being changed.
523 * Return <0 on error to abort the inode change operation.
524 * Return 0 if inode_killpriv does not need to be called.
525 * Return >0 if inode_killpriv does need to be called.
527 * The setuid bit is being removed. Remove similar security labels.
528 * Called with the dentry->d_inode->i_mutex held.
529 * @dentry is the dentry being changed.
530 * Return 0 on success. If error is returned, then the operation
531 * causing setuid bit removal is failed.
533 * Get the secid associated with the node.
534 * @inode contains a pointer to the inode.
535 * @secid contains a pointer to the location where result will be saved.
536 * In case of failure, @secid will be set to zero.
538 * Security hooks for file operations
541 * Check file permissions before accessing an open file. This hook is
542 * called by various operations that read or write files. A security
543 * module can use this hook to perform additional checking on these
544 * operations, e.g. to revalidate permissions on use to support privilege
545 * bracketing or policy changes. Notice that this hook is used when the
546 * actual read/write operations are performed, whereas the
547 * inode_security_ops hook is called when a file is opened (as well as
548 * many other operations).
549 * Caveat: Although this hook can be used to revalidate permissions for
550 * various system call operations that read or write files, it does not
551 * address the revalidation of permissions for memory-mapped files.
552 * Security modules must handle this separately if they need such
554 * @file contains the file structure being accessed.
555 * @mask contains the requested permissions.
556 * Return 0 if permission is granted.
557 * @file_alloc_security:
558 * Allocate and attach a security structure to the file->f_security field.
559 * The security field is initialized to NULL when the structure is first
561 * @file contains the file structure to secure.
562 * Return 0 if the hook is successful and permission is granted.
563 * @file_free_security:
564 * Deallocate and free any security structures stored in file->f_security.
565 * @file contains the file structure being modified.
567 * @file contains the file structure.
568 * @cmd contains the operation to perform.
569 * @arg contains the operational arguments.
570 * Check permission for an ioctl operation on @file. Note that @arg can
571 * sometimes represents a user space pointer; in other cases, it may be a
572 * simple integer value. When @arg represents a user space pointer, it
573 * should never be used by the security module.
574 * Return 0 if permission is granted.
576 * Check permissions for a mmap operation. The @file may be NULL, e.g.
577 * if mapping anonymous memory.
578 * @file contains the file structure for file to map (may be NULL).
579 * @reqprot contains the protection requested by the application.
580 * @prot contains the protection that will be applied by the kernel.
581 * @flags contains the operational flags.
582 * Return 0 if permission is granted.
584 * Check permissions before changing memory access permissions.
585 * @vma contains the memory region to modify.
586 * @reqprot contains the protection requested by the application.
587 * @prot contains the protection that will be applied by the kernel.
588 * Return 0 if permission is granted.
590 * Check permission before performing file locking operations.
591 * Note: this hook mediates both flock and fcntl style locks.
592 * @file contains the file structure.
593 * @cmd contains the posix-translated lock operation to perform
594 * (e.g. F_RDLCK, F_WRLCK).
595 * Return 0 if permission is granted.
597 * Check permission before allowing the file operation specified by @cmd
598 * from being performed on the file @file. Note that @arg can sometimes
599 * represents a user space pointer; in other cases, it may be a simple
600 * integer value. When @arg represents a user space pointer, it should
601 * never be used by the security module.
602 * @file contains the file structure.
603 * @cmd contains the operation to be performed.
604 * @arg contains the operational arguments.
605 * Return 0 if permission is granted.
607 * Save owner security information (typically from current->security) in
608 * file->f_security for later use by the send_sigiotask hook.
609 * @file contains the file structure to update.
610 * Return 0 on success.
611 * @file_send_sigiotask:
612 * Check permission for the file owner @fown to send SIGIO or SIGURG to the
613 * process @tsk. Note that this hook is sometimes called from interrupt.
614 * Note that the fown_struct, @fown, is never outside the context of a
615 * struct file, so the file structure (and associated security information)
616 * can always be obtained:
617 * container_of(fown, struct file, f_owner)
618 * @tsk contains the structure of task receiving signal.
619 * @fown contains the file owner information.
620 * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
621 * Return 0 if permission is granted.
623 * This hook allows security modules to control the ability of a process
624 * to receive an open file descriptor via socket IPC.
625 * @file contains the file structure being received.
626 * Return 0 if permission is granted.
628 * Security hook for dentry
631 * Save open-time permission checking state for later use upon
632 * file_permission, and recheck access if anything has changed
633 * since inode_permission.
635 * Security hooks for task operations.
638 * Check permission before creating a child process. See the clone(2)
639 * manual page for definitions of the @clone_flags.
640 * @clone_flags contains the flags indicating what should be shared.
641 * Return 0 if permission is granted.
643 * @cred points to the credentials.
644 * @gfp indicates the atomicity of any memory allocations.
645 * Only allocate sufficient memory and attach to @cred such that
646 * cred_transfer() will not get ENOMEM.
648 * @cred points to the credentials.
649 * Deallocate and clear the cred->security field in a set of credentials.
651 * @new points to the new credentials.
652 * @old points to the original credentials.
653 * @gfp indicates the atomicity of any memory allocations.
654 * Prepare a new set of credentials by copying the data from the old set.
656 * @new points to the new credentials.
657 * @old points to the original credentials.
658 * Transfer data from original creds to new creds
660 * Set the credentials for a kernel service to act as (subjective context).
661 * @new points to the credentials to be modified.
662 * @secid specifies the security ID to be set
663 * The current task must be the one that nominated @secid.
664 * Return 0 if successful.
665 * @kernel_create_files_as:
666 * Set the file creation context in a set of credentials to be the same as
667 * the objective context of the specified inode.
668 * @new points to the credentials to be modified.
669 * @inode points to the inode to use as a reference.
670 * The current task must be the one that nominated @inode.
671 * Return 0 if successful.
672 * @kernel_module_request:
673 * Ability to trigger the kernel to automatically upcall to userspace for
674 * userspace to load a kernel module with the given name.
675 * @kmod_name name of the module requested by the kernel
676 * Return 0 if successful.
678 * Check permission before setting one or more of the user identity
679 * attributes of the current process. The @flags parameter indicates
680 * which of the set*uid system calls invoked this hook and how to
681 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
682 * definitions at the beginning of this file for the @flags values and
684 * @id0 contains a uid.
685 * @id1 contains a uid.
686 * @id2 contains a uid.
687 * @flags contains one of the LSM_SETID_* values.
688 * Return 0 if permission is granted.
690 * Update the module's state after setting one or more of the user
691 * identity attributes of the current process. The @flags parameter
692 * indicates which of the set*uid system calls invoked this hook. If
693 * @new is the set of credentials that will be installed. Modifications
694 * should be made to this rather than to @current->cred.
695 * @old is the set of credentials that are being replaces
696 * @flags contains one of the LSM_SETID_* values.
697 * Return 0 on success.
699 * Check permission before setting one or more of the group identity
700 * attributes of the current process. The @flags parameter indicates
701 * which of the set*gid system calls invoked this hook and how to
702 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
703 * definitions at the beginning of this file for the @flags values and
705 * @id0 contains a gid.
706 * @id1 contains a gid.
707 * @id2 contains a gid.
708 * @flags contains one of the LSM_SETID_* values.
709 * Return 0 if permission is granted.
711 * Check permission before setting the process group identifier of the
712 * process @p to @pgid.
713 * @p contains the task_struct for process being modified.
714 * @pgid contains the new pgid.
715 * Return 0 if permission is granted.
717 * Check permission before getting the process group identifier of the
719 * @p contains the task_struct for the process.
720 * Return 0 if permission is granted.
722 * Check permission before getting the session identifier of the process
724 * @p contains the task_struct for the process.
725 * Return 0 if permission is granted.
727 * Retrieve the security identifier of the process @p.
728 * @p contains the task_struct for the process and place is into @secid.
729 * In case of failure, @secid will be set to zero.
732 * Check permission before setting the supplementary group set of the
734 * @group_info contains the new group information.
735 * Return 0 if permission is granted.
737 * Check permission before setting the nice value of @p to @nice.
738 * @p contains the task_struct of process.
739 * @nice contains the new nice value.
740 * Return 0 if permission is granted.
742 * Check permission before setting the ioprio value of @p to @ioprio.
743 * @p contains the task_struct of process.
744 * @ioprio contains the new ioprio value
745 * Return 0 if permission is granted.
747 * Check permission before getting the ioprio value of @p.
748 * @p contains the task_struct of process.
749 * Return 0 if permission is granted.
751 * Check permission before setting the resource limits of the current
752 * process for @resource to @new_rlim. The old resource limit values can
753 * be examined by dereferencing (current->signal->rlim + resource).
754 * @resource contains the resource whose limit is being set.
755 * @new_rlim contains the new limits for @resource.
756 * Return 0 if permission is granted.
757 * @task_setscheduler:
758 * Check permission before setting scheduling policy and/or parameters of
759 * process @p based on @policy and @lp.
760 * @p contains the task_struct for process.
761 * @policy contains the scheduling policy.
762 * @lp contains the scheduling parameters.
763 * Return 0 if permission is granted.
764 * @task_getscheduler:
765 * Check permission before obtaining scheduling information for process
767 * @p contains the task_struct for process.
768 * Return 0 if permission is granted.
770 * Check permission before moving memory owned by process @p.
771 * @p contains the task_struct for process.
772 * Return 0 if permission is granted.
774 * Check permission before sending signal @sig to @p. @info can be NULL,
775 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
776 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
777 * from the kernel and should typically be permitted.
778 * SIGIO signals are handled separately by the send_sigiotask hook in
780 * @p contains the task_struct for process.
781 * @info contains the signal information.
782 * @sig contains the signal value.
783 * @secid contains the sid of the process where the signal originated
784 * Return 0 if permission is granted.
786 * Check permission before allowing a process to reap a child process @p
787 * and collect its status information.
788 * @p contains the task_struct for process.
789 * Return 0 if permission is granted.
791 * Check permission before performing a process control operation on the
793 * @option contains the operation.
794 * @arg2 contains a argument.
795 * @arg3 contains a argument.
796 * @arg4 contains a argument.
797 * @arg5 contains a argument.
798 * Return -ENOSYS if no-one wanted to handle this op, any other value to
799 * cause prctl() to return immediately with that value.
801 * Set the security attributes for an inode based on an associated task's
802 * security attributes, e.g. for /proc/pid inodes.
803 * @p contains the task_struct for the task.
804 * @inode contains the inode structure for the inode.
806 * Security hooks for Netlink messaging.
809 * Save security information for a netlink message so that permission
810 * checking can be performed when the message is processed. The security
811 * information can be saved using the eff_cap field of the
812 * netlink_skb_parms structure. Also may be used to provide fine
813 * grained control over message transmission.
814 * @sk associated sock of task sending the message.,
815 * @skb contains the sk_buff structure for the netlink message.
816 * Return 0 if the information was successfully saved and message
817 * is allowed to be transmitted.
819 * Check permission before processing the received netlink message in
821 * @skb contains the sk_buff structure for the netlink message.
822 * @cap indicates the capability required
823 * Return 0 if permission is granted.
825 * Security hooks for Unix domain networking.
827 * @unix_stream_connect:
828 * Check permissions before establishing a Unix domain stream connection
829 * between @sock and @other.
830 * @sock contains the socket structure.
831 * @other contains the peer socket structure.
832 * Return 0 if permission is granted.
834 * Check permissions before connecting or sending datagrams from @sock to
836 * @sock contains the socket structure.
837 * @sock contains the peer socket structure.
838 * Return 0 if permission is granted.
840 * The @unix_stream_connect and @unix_may_send hooks were necessary because
841 * Linux provides an alternative to the conventional file name space for Unix
842 * domain sockets. Whereas binding and connecting to sockets in the file name
843 * space is mediated by the typical file permissions (and caught by the mknod
844 * and permission hooks in inode_security_ops), binding and connecting to
845 * sockets in the abstract name space is completely unmediated. Sufficient
846 * control of Unix domain sockets in the abstract name space isn't possible
847 * using only the socket layer hooks, since we need to know the actual target
848 * socket, which is not looked up until we are inside the af_unix code.
850 * Security hooks for socket operations.
853 * Check permissions prior to creating a new socket.
854 * @family contains the requested protocol family.
855 * @type contains the requested communications type.
856 * @protocol contains the requested protocol.
857 * @kern set to 1 if a kernel socket.
858 * Return 0 if permission is granted.
859 * @socket_post_create:
860 * This hook allows a module to update or allocate a per-socket security
861 * structure. Note that the security field was not added directly to the
862 * socket structure, but rather, the socket security information is stored
863 * in the associated inode. Typically, the inode alloc_security hook will
864 * allocate and and attach security information to
865 * sock->inode->i_security. This hook may be used to update the
866 * sock->inode->i_security field with additional information that wasn't
867 * available when the inode was allocated.
868 * @sock contains the newly created socket structure.
869 * @family contains the requested protocol family.
870 * @type contains the requested communications type.
871 * @protocol contains the requested protocol.
872 * @kern set to 1 if a kernel socket.
874 * Check permission before socket protocol layer bind operation is
875 * performed and the socket @sock is bound to the address specified in the
876 * @address parameter.
877 * @sock contains the socket structure.
878 * @address contains the address to bind to.
879 * @addrlen contains the length of address.
880 * Return 0 if permission is granted.
882 * Check permission before socket protocol layer connect operation
883 * attempts to connect socket @sock to a remote address, @address.
884 * @sock contains the socket structure.
885 * @address contains the address of remote endpoint.
886 * @addrlen contains the length of address.
887 * Return 0 if permission is granted.
889 * Check permission before socket protocol layer listen operation.
890 * @sock contains the socket structure.
891 * @backlog contains the maximum length for the pending connection queue.
892 * Return 0 if permission is granted.
894 * Check permission before accepting a new connection. Note that the new
895 * socket, @newsock, has been created and some information copied to it,
896 * but the accept operation has not actually been performed.
897 * @sock contains the listening socket structure.
898 * @newsock contains the newly created server socket for connection.
899 * Return 0 if permission is granted.
901 * Check permission before transmitting a message to another socket.
902 * @sock contains the socket structure.
903 * @msg contains the message to be transmitted.
904 * @size contains the size of message.
905 * Return 0 if permission is granted.
907 * Check permission before receiving a message from a socket.
908 * @sock contains the socket structure.
909 * @msg contains the message structure.
910 * @size contains the size of message structure.
911 * @flags contains the operational flags.
912 * Return 0 if permission is granted.
913 * @socket_getsockname:
914 * Check permission before the local address (name) of the socket object
915 * @sock is retrieved.
916 * @sock contains the socket structure.
917 * Return 0 if permission is granted.
918 * @socket_getpeername:
919 * Check permission before the remote address (name) of a socket object
920 * @sock is retrieved.
921 * @sock contains the socket structure.
922 * Return 0 if permission is granted.
923 * @socket_getsockopt:
924 * Check permissions before retrieving the options associated with socket
926 * @sock contains the socket structure.
927 * @level contains the protocol level to retrieve option from.
928 * @optname contains the name of option to retrieve.
929 * Return 0 if permission is granted.
930 * @socket_setsockopt:
931 * Check permissions before setting the options associated with socket
933 * @sock contains the socket structure.
934 * @level contains the protocol level to set options for.
935 * @optname contains the name of the option to set.
936 * Return 0 if permission is granted.
938 * Checks permission before all or part of a connection on the socket
939 * @sock is shut down.
940 * @sock contains the socket structure.
941 * @how contains the flag indicating how future sends and receives are handled.
942 * Return 0 if permission is granted.
943 * @socket_sock_rcv_skb:
944 * Check permissions on incoming network packets. This hook is distinct
945 * from Netfilter's IP input hooks since it is the first time that the
946 * incoming sk_buff @skb has been associated with a particular socket, @sk.
947 * Must not sleep inside this hook because some callers hold spinlocks.
948 * @sk contains the sock (not socket) associated with the incoming sk_buff.
949 * @skb contains the incoming network data.
950 * @socket_getpeersec_stream:
951 * This hook allows the security module to provide peer socket security
952 * state for unix or connected tcp sockets to userspace via getsockopt
953 * SO_GETPEERSEC. For tcp sockets this can be meaningful if the
954 * socket is associated with an ipsec SA.
955 * @sock is the local socket.
956 * @optval userspace memory where the security state is to be copied.
957 * @optlen userspace int where the module should copy the actual length
958 * of the security state.
959 * @len as input is the maximum length to copy to userspace provided
961 * Return 0 if all is well, otherwise, typical getsockopt return
963 * @socket_getpeersec_dgram:
964 * This hook allows the security module to provide peer socket security
965 * state for udp sockets on a per-packet basis to userspace via
966 * getsockopt SO_GETPEERSEC. The application must first have indicated
967 * the IP_PASSSEC option via getsockopt. It can then retrieve the
968 * security state returned by this hook for a packet via the SCM_SECURITY
969 * ancillary message type.
970 * @skb is the skbuff for the packet being queried
971 * @secdata is a pointer to a buffer in which to copy the security data
972 * @seclen is the maximum length for @secdata
973 * Return 0 on success, error on failure.
974 * @sk_alloc_security:
975 * Allocate and attach a security structure to the sk->sk_security field,
976 * which is used to copy security attributes between local stream sockets.
978 * Deallocate security structure.
979 * @sk_clone_security:
980 * Clone/copy security structure.
982 * Retrieve the LSM-specific secid for the sock to enable caching of network
985 * Sets the socket's isec sid to the sock's sid.
986 * @inet_conn_request:
987 * Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
989 * Sets the new child socket's sid to the openreq sid.
990 * @inet_conn_established:
991 * Sets the connection's peersid to the secmark on skb.
992 * @req_classify_flow:
993 * Sets the flow's sid to the openreq sid.
995 * Check permissions prior to creating a new TUN device.
996 * @tun_dev_post_create:
997 * This hook allows a module to update or allocate a per-socket security
999 * @sk contains the newly created sock structure.
1001 * Check permissions prior to attaching to a persistent TUN device. This
1002 * hook can also be used by the module to update any security state
1003 * associated with the TUN device's sock structure.
1004 * @sk contains the existing sock structure.
1006 * Security hooks for XFRM operations.
1008 * @xfrm_policy_alloc_security:
1009 * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
1010 * Database used by the XFRM system.
1011 * @sec_ctx contains the security context information being provided by
1012 * the user-level policy update program (e.g., setkey).
1013 * Allocate a security structure to the xp->security field; the security
1014 * field is initialized to NULL when the xfrm_policy is allocated.
1015 * Return 0 if operation was successful (memory to allocate, legal context)
1016 * @xfrm_policy_clone_security:
1017 * @old_ctx contains an existing xfrm_sec_ctx.
1018 * @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
1019 * Allocate a security structure in new_ctxp that contains the
1020 * information from the old_ctx structure.
1021 * Return 0 if operation was successful (memory to allocate).
1022 * @xfrm_policy_free_security:
1023 * @ctx contains the xfrm_sec_ctx
1024 * Deallocate xp->security.
1025 * @xfrm_policy_delete_security:
1026 * @ctx contains the xfrm_sec_ctx.
1027 * Authorize deletion of xp->security.
1028 * @xfrm_state_alloc_security:
1029 * @x contains the xfrm_state being added to the Security Association
1030 * Database by the XFRM system.
1031 * @sec_ctx contains the security context information being provided by
1032 * the user-level SA generation program (e.g., setkey or racoon).
1033 * @secid contains the secid from which to take the mls portion of the context.
1034 * Allocate a security structure to the x->security field; the security
1035 * field is initialized to NULL when the xfrm_state is allocated. Set the
1036 * context to correspond to either sec_ctx or polsec, with the mls portion
1037 * taken from secid in the latter case.
1038 * Return 0 if operation was successful (memory to allocate, legal context).
1039 * @xfrm_state_free_security:
1040 * @x contains the xfrm_state.
1041 * Deallocate x->security.
1042 * @xfrm_state_delete_security:
1043 * @x contains the xfrm_state.
1044 * Authorize deletion of x->security.
1045 * @xfrm_policy_lookup:
1046 * @ctx contains the xfrm_sec_ctx for which the access control is being
1048 * @fl_secid contains the flow security label that is used to authorize
1049 * access to the policy xp.
1050 * @dir contains the direction of the flow (input or output).
1051 * Check permission when a flow selects a xfrm_policy for processing
1052 * XFRMs on a packet. The hook is called when selecting either a
1053 * per-socket policy or a generic xfrm policy.
1054 * Return 0 if permission is granted, -ESRCH otherwise, or -errno
1056 * @xfrm_state_pol_flow_match:
1057 * @x contains the state to match.
1058 * @xp contains the policy to check for a match.
1059 * @fl contains the flow to check for a match.
1060 * Return 1 if there is a match.
1061 * @xfrm_decode_session:
1062 * @skb points to skb to decode.
1063 * @secid points to the flow key secid to set.
1064 * @ckall says if all xfrms used should be checked for same secid.
1065 * Return 0 if ckall is zero or all xfrms used have the same secid.
1067 * Security hooks affecting all Key Management operations
1070 * Permit allocation of a key and assign security data. Note that key does
1071 * not have a serial number assigned at this point.
1072 * @key points to the key.
1073 * @flags is the allocation flags
1074 * Return 0 if permission is granted, -ve error otherwise.
1076 * Notification of destruction; free security data.
1077 * @key points to the key.
1080 * See whether a specific operational right is granted to a process on a
1082 * @key_ref refers to the key (key pointer + possession attribute bit).
1083 * @cred points to the credentials to provide the context against which to
1084 * evaluate the security data on the key.
1085 * @perm describes the combination of permissions required of this key.
1086 * Return 1 if permission granted, 0 if permission denied and -ve it the
1087 * normal permissions model should be effected.
1089 * Get a textual representation of the security context attached to a key
1090 * for the purposes of honouring KEYCTL_GETSECURITY. This function
1091 * allocates the storage for the NUL-terminated string and the caller
1093 * @key points to the key to be queried.
1094 * @_buffer points to a pointer that should be set to point to the
1095 * resulting string (if no label or an error occurs).
1096 * Return the length of the string (including terminating NUL) or -ve if
1098 * May also return 0 (and a NULL buffer pointer) if there is no label.
1099 * @key_session_to_parent:
1100 * Forcibly assign the session keyring from a process to its parent
1102 * @cred: Pointer to process's credentials
1103 * @parent_cred: Pointer to parent process's credentials
1104 * @keyring: Proposed new session keyring
1105 * Return 0 if permission is granted, -ve error otherwise.
1107 * Security hooks affecting all System V IPC operations.
1110 * Check permissions for access to IPC
1111 * @ipcp contains the kernel IPC permission structure
1112 * @flag contains the desired (requested) permission set
1113 * Return 0 if permission is granted.
1115 * Get the secid associated with the ipc object.
1116 * @ipcp contains the kernel IPC permission structure.
1117 * @secid contains a pointer to the location where result will be saved.
1118 * In case of failure, @secid will be set to zero.
1120 * Security hooks for individual messages held in System V IPC message queues
1121 * @msg_msg_alloc_security:
1122 * Allocate and attach a security structure to the msg->security field.
1123 * The security field is initialized to NULL when the structure is first
1125 * @msg contains the message structure to be modified.
1126 * Return 0 if operation was successful and permission is granted.
1127 * @msg_msg_free_security:
1128 * Deallocate the security structure for this message.
1129 * @msg contains the message structure to be modified.
1131 * Security hooks for System V IPC Message Queues
1133 * @msg_queue_alloc_security:
1134 * Allocate and attach a security structure to the
1135 * msq->q_perm.security field. The security field is initialized to
1136 * NULL when the structure is first created.
1137 * @msq contains the message queue structure to be modified.
1138 * Return 0 if operation was successful and permission is granted.
1139 * @msg_queue_free_security:
1140 * Deallocate security structure for this message queue.
1141 * @msq contains the message queue structure to be modified.
1142 * @msg_queue_associate:
1143 * Check permission when a message queue is requested through the
1144 * msgget system call. This hook is only called when returning the
1145 * message queue identifier for an existing message queue, not when a
1146 * new message queue is created.
1147 * @msq contains the message queue to act upon.
1148 * @msqflg contains the operation control flags.
1149 * Return 0 if permission is granted.
1150 * @msg_queue_msgctl:
1151 * Check permission when a message control operation specified by @cmd
1152 * is to be performed on the message queue @msq.
1153 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
1154 * @msq contains the message queue to act upon. May be NULL.
1155 * @cmd contains the operation to be performed.
1156 * Return 0 if permission is granted.
1157 * @msg_queue_msgsnd:
1158 * Check permission before a message, @msg, is enqueued on the message
1160 * @msq contains the message queue to send message to.
1161 * @msg contains the message to be enqueued.
1162 * @msqflg contains operational flags.
1163 * Return 0 if permission is granted.
1164 * @msg_queue_msgrcv:
1165 * Check permission before a message, @msg, is removed from the message
1166 * queue, @msq. The @target task structure contains a pointer to the
1167 * process that will be receiving the message (not equal to the current
1168 * process when inline receives are being performed).
1169 * @msq contains the message queue to retrieve message from.
1170 * @msg contains the message destination.
1171 * @target contains the task structure for recipient process.
1172 * @type contains the type of message requested.
1173 * @mode contains the operational flags.
1174 * Return 0 if permission is granted.
1176 * Security hooks for System V Shared Memory Segments
1178 * @shm_alloc_security:
1179 * Allocate and attach a security structure to the shp->shm_perm.security
1180 * field. The security field is initialized to NULL when the structure is
1182 * @shp contains the shared memory structure to be modified.
1183 * Return 0 if operation was successful and permission is granted.
1184 * @shm_free_security:
1185 * Deallocate the security struct for this memory segment.
1186 * @shp contains the shared memory structure to be modified.
1188 * Check permission when a shared memory region is requested through the
1189 * shmget system call. This hook is only called when returning the shared
1190 * memory region identifier for an existing region, not when a new shared
1191 * memory region is created.
1192 * @shp contains the shared memory structure to be modified.
1193 * @shmflg contains the operation control flags.
1194 * Return 0 if permission is granted.
1196 * Check permission when a shared memory control operation specified by
1197 * @cmd is to be performed on the shared memory region @shp.
1198 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1199 * @shp contains shared memory structure to be modified.
1200 * @cmd contains the operation to be performed.
1201 * Return 0 if permission is granted.
1203 * Check permissions prior to allowing the shmat system call to attach the
1204 * shared memory segment @shp to the data segment of the calling process.
1205 * The attaching address is specified by @shmaddr.
1206 * @shp contains the shared memory structure to be modified.
1207 * @shmaddr contains the address to attach memory region to.
1208 * @shmflg contains the operational flags.
1209 * Return 0 if permission is granted.
1211 * Security hooks for System V Semaphores
1213 * @sem_alloc_security:
1214 * Allocate and attach a security structure to the sma->sem_perm.security
1215 * field. The security field is initialized to NULL when the structure is
1217 * @sma contains the semaphore structure
1218 * Return 0 if operation was successful and permission is granted.
1219 * @sem_free_security:
1220 * deallocate security struct for this semaphore
1221 * @sma contains the semaphore structure.
1223 * Check permission when a semaphore is requested through the semget
1224 * system call. This hook is only called when returning the semaphore
1225 * identifier for an existing semaphore, not when a new one must be
1227 * @sma contains the semaphore structure.
1228 * @semflg contains the operation control flags.
1229 * Return 0 if permission is granted.
1231 * Check permission when a semaphore operation specified by @cmd is to be
1232 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
1233 * IPC_INFO or SEM_INFO.
1234 * @sma contains the semaphore structure. May be NULL.
1235 * @cmd contains the operation to be performed.
1236 * Return 0 if permission is granted.
1238 * Check permissions before performing operations on members of the
1239 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1241 * @sma contains the semaphore structure.
1242 * @sops contains the operations to perform.
1243 * @nsops contains the number of operations to perform.
1244 * @alter contains the flag indicating whether changes are to be made.
1245 * Return 0 if permission is granted.
1247 * @ptrace_access_check:
1248 * Check permission before allowing the current process to trace the
1250 * Security modules may also want to perform a process tracing check
1251 * during an execve in the set_security or apply_creds hooks of
1252 * tracing check during an execve in the bprm_set_creds hook of
1253 * binprm_security_ops if the process is being traced and its security
1254 * attributes would be changed by the execve.
1255 * @child contains the task_struct structure for the target process.
1256 * @mode contains the PTRACE_MODE flags indicating the form of access.
1257 * Return 0 if permission is granted.
1259 * Check that the @parent process has sufficient permission to trace the
1260 * current process before allowing the current process to present itself
1261 * to the @parent process for tracing.
1262 * The parent process will still have to undergo the ptrace_access_check
1263 * checks before it is allowed to trace this one.
1264 * @parent contains the task_struct structure for debugger process.
1265 * Return 0 if permission is granted.
1267 * Get the @effective, @inheritable, and @permitted capability sets for
1268 * the @target process. The hook may also perform permission checking to
1269 * determine if the current process is allowed to see the capability sets
1270 * of the @target process.
1271 * @target contains the task_struct structure for target process.
1272 * @effective contains the effective capability set.
1273 * @inheritable contains the inheritable capability set.
1274 * @permitted contains the permitted capability set.
1275 * Return 0 if the capability sets were successfully obtained.
1277 * Set the @effective, @inheritable, and @permitted capability sets for
1278 * the current process.
1279 * @new contains the new credentials structure for target process.
1280 * @old contains the current credentials structure for target process.
1281 * @effective contains the effective capability set.
1282 * @inheritable contains the inheritable capability set.
1283 * @permitted contains the permitted capability set.
1284 * Return 0 and update @new if permission is granted.
1286 * Check whether the @tsk process has the @cap capability in the indicated
1288 * @tsk contains the task_struct for the process.
1289 * @cred contains the credentials to use.
1290 * @cap contains the capability <include/linux/capability.h>.
1291 * @audit: Whether to write an audit message or not
1292 * Return 0 if the capability is granted for @tsk.
1294 * Check permission before enabling or disabling process accounting. If
1295 * accounting is being enabled, then @file refers to the open file used to
1296 * store accounting records. If accounting is being disabled, then @file
1298 * @file contains the file structure for the accounting file (may be NULL).
1299 * Return 0 if permission is granted.
1301 * Check permission before accessing the @table sysctl variable in the
1302 * manner specified by @op.
1303 * @table contains the ctl_table structure for the sysctl variable.
1304 * @op contains the operation (001 = search, 002 = write, 004 = read).
1305 * Return 0 if permission is granted.
1307 * Check permission before accessing the kernel message ring or changing
1308 * logging to the console.
1309 * See the syslog(2) manual page for an explanation of the @type values.
1310 * @type contains the type of action.
1311 * @from_file indicates the context of action (if it came from /proc).
1312 * Return 0 if permission is granted.
1314 * Check permission to change the system time.
1315 * struct timespec and timezone are defined in include/linux/time.h
1316 * @ts contains new time
1317 * @tz contains new timezone
1318 * Return 0 if permission is granted.
1319 * @vm_enough_memory:
1320 * Check permissions for allocating a new virtual mapping.
1321 * @mm contains the mm struct it is being added to.
1322 * @pages contains the number of pages.
1323 * Return 0 if permission is granted.
1326 * Convert secid to security context.
1327 * @secid contains the security ID.
1328 * @secdata contains the pointer that stores the converted security context.
1330 * Convert security context to secid.
1331 * @secid contains the pointer to the generated security ID.
1332 * @secdata contains the security context.
1335 * Release the security context.
1336 * @secdata contains the security context.
1337 * @seclen contains the length of the security context.
1339 * Security hooks for Audit
1342 * Allocate and initialize an LSM audit rule structure.
1343 * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
1344 * @op contains the operator the rule uses.
1345 * @rulestr contains the context where the rule will be applied to.
1346 * @lsmrule contains a pointer to receive the result.
1347 * Return 0 if @lsmrule has been successfully set,
1348 * -EINVAL in case of an invalid rule.
1350 * @audit_rule_known:
1351 * Specifies whether given @rule contains any fields related to current LSM.
1352 * @rule contains the audit rule of interest.
1353 * Return 1 in case of relation found, 0 otherwise.
1355 * @audit_rule_match:
1356 * Determine if given @secid matches a rule previously approved
1357 * by @audit_rule_known.
1358 * @secid contains the security id in question.
1359 * @field contains the field which relates to current LSM.
1360 * @op contains the operator that will be used for matching.
1361 * @rule points to the audit rule that will be checked against.
1362 * @actx points to the audit context associated with the check.
1363 * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
1366 * Deallocate the LSM audit rule structure previously allocated by
1368 * @rule contains the allocated rule
1370 * @inode_notifysecctx:
1371 * Notify the security module of what the security context of an inode
1372 * should be. Initializes the incore security context managed by the
1373 * security module for this inode. Example usage: NFS client invokes
1374 * this hook to initialize the security context in its incore inode to the
1375 * value provided by the server for the file when the server returned the
1376 * file's attributes to the client.
1378 * Must be called with inode->i_mutex locked.
1380 * @inode we wish to set the security context of.
1381 * @ctx contains the string which we wish to set in the inode.
1382 * @ctxlen contains the length of @ctx.
1385 * Change the security context of an inode. Updates the
1386 * incore security context managed by the security module and invokes the
1387 * fs code as needed (via __vfs_setxattr_noperm) to update any backing
1388 * xattrs that represent the context. Example usage: NFS server invokes
1389 * this hook to change the security context in its incore inode and on the
1390 * backing filesystem to a value provided by the client on a SETATTR
1393 * Must be called with inode->i_mutex locked.
1395 * @dentry contains the inode we wish to set the security context of.
1396 * @ctx contains the string which we wish to set in the inode.
1397 * @ctxlen contains the length of @ctx.
1400 * Returns a string containing all relavent security context information
1402 * @inode we wish to set the security context of.
1403 * @ctx is a pointer in which to place the allocated security context.
1404 * @ctxlen points to the place to put the length of @ctx.
1405 * This is the main security structure.
1407 struct security_operations {
1408 char name[SECURITY_NAME_MAX + 1];
1410 int (*ptrace_access_check) (struct task_struct *child, unsigned int mode);
1411 int (*ptrace_traceme) (struct task_struct *parent);
1412 int (*capget) (struct task_struct *target,
1413 kernel_cap_t *effective,
1414 kernel_cap_t *inheritable, kernel_cap_t *permitted);
1415 int (*capset) (struct cred *new,
1416 const struct cred *old,
1417 const kernel_cap_t *effective,
1418 const kernel_cap_t *inheritable,
1419 const kernel_cap_t *permitted);
1420 int (*capable) (struct task_struct *tsk, const struct cred *cred,
1421 int cap, int audit);
1422 int (*acct) (struct file *file);
1423 int (*sysctl) (struct ctl_table *table, int op);
1424 int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
1425 int (*quota_on) (struct dentry *dentry);
1426 int (*syslog) (int type, bool from_file);
1427 int (*settime) (struct timespec *ts, struct timezone *tz);
1428 int (*vm_enough_memory) (struct mm_struct *mm, long pages);
1430 int (*bprm_set_creds) (struct linux_binprm *bprm);
1431 int (*bprm_check_security) (struct linux_binprm *bprm);
1432 int (*bprm_secureexec) (struct linux_binprm *bprm);
1433 void (*bprm_committing_creds) (struct linux_binprm *bprm);
1434 void (*bprm_committed_creds) (struct linux_binprm *bprm);
1436 int (*sb_alloc_security) (struct super_block *sb);
1437 void (*sb_free_security) (struct super_block *sb);
1438 int (*sb_copy_data) (char *orig, char *copy);
1439 int (*sb_kern_mount) (struct super_block *sb, int flags, void *data);
1440 int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
1441 int (*sb_statfs) (struct dentry *dentry);
1442 int (*sb_mount) (char *dev_name, struct path *path,
1443 char *type, unsigned long flags, void *data);
1444 int (*sb_umount) (struct vfsmount *mnt, int flags);
1445 int (*sb_pivotroot) (struct path *old_path,
1446 struct path *new_path);
1447 int (*sb_set_mnt_opts) (struct super_block *sb,
1448 struct security_mnt_opts *opts);
1449 void (*sb_clone_mnt_opts) (const struct super_block *oldsb,
1450 struct super_block *newsb);
1451 int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
1453 #ifdef CONFIG_SECURITY_PATH
1454 int (*path_unlink) (struct path *dir, struct dentry *dentry);
1455 int (*path_mkdir) (struct path *dir, struct dentry *dentry, int mode);
1456 int (*path_rmdir) (struct path *dir, struct dentry *dentry);
1457 int (*path_mknod) (struct path *dir, struct dentry *dentry, int mode,
1459 int (*path_truncate) (struct path *path, loff_t length,
1460 unsigned int time_attrs);
1461 int (*path_symlink) (struct path *dir, struct dentry *dentry,
1462 const char *old_name);
1463 int (*path_link) (struct dentry *old_dentry, struct path *new_dir,
1464 struct dentry *new_dentry);
1465 int (*path_rename) (struct path *old_dir, struct dentry *old_dentry,
1466 struct path *new_dir, struct dentry *new_dentry);
1467 int (*path_chmod) (struct dentry *dentry, struct vfsmount *mnt,
1469 int (*path_chown) (struct path *path, uid_t uid, gid_t gid);
1470 int (*path_chroot) (struct path *path);
1473 int (*inode_alloc_security) (struct inode *inode);
1474 void (*inode_free_security) (struct inode *inode);
1475 int (*inode_init_security) (struct inode *inode, struct inode *dir,
1476 char **name, void **value, size_t *len);
1477 int (*inode_create) (struct inode *dir,
1478 struct dentry *dentry, int mode);
1479 int (*inode_link) (struct dentry *old_dentry,
1480 struct inode *dir, struct dentry *new_dentry);
1481 int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
1482 int (*inode_symlink) (struct inode *dir,
1483 struct dentry *dentry, const char *old_name);
1484 int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, int mode);
1485 int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
1486 int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
1487 int mode, dev_t dev);
1488 int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
1489 struct inode *new_dir, struct dentry *new_dentry);
1490 int (*inode_readlink) (struct dentry *dentry);
1491 int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
1492 int (*inode_permission) (struct inode *inode, int mask);
1493 int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
1494 int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
1495 int (*inode_setxattr) (struct dentry *dentry, const char *name,
1496 const void *value, size_t size, int flags);
1497 void (*inode_post_setxattr) (struct dentry *dentry, const char *name,
1498 const void *value, size_t size, int flags);
1499 int (*inode_getxattr) (struct dentry *dentry, const char *name);
1500 int (*inode_listxattr) (struct dentry *dentry);
1501 int (*inode_removexattr) (struct dentry *dentry, const char *name);
1502 int (*inode_need_killpriv) (struct dentry *dentry);
1503 int (*inode_killpriv) (struct dentry *dentry);
1504 int (*inode_getsecurity) (const struct inode *inode, const char *name, void **buffer, bool alloc);
1505 int (*inode_setsecurity) (struct inode *inode, const char *name, const void *value, size_t size, int flags);
1506 int (*inode_listsecurity) (struct inode *inode, char *buffer, size_t buffer_size);
1507 void (*inode_getsecid) (const struct inode *inode, u32 *secid);
1509 int (*file_permission) (struct file *file, int mask);
1510 int (*file_alloc_security) (struct file *file);
1511 void (*file_free_security) (struct file *file);
1512 int (*file_ioctl) (struct file *file, unsigned int cmd,
1514 int (*file_mmap) (struct file *file,
1515 unsigned long reqprot, unsigned long prot,
1516 unsigned long flags, unsigned long addr,
1517 unsigned long addr_only);
1518 int (*file_mprotect) (struct vm_area_struct *vma,
1519 unsigned long reqprot,
1520 unsigned long prot);
1521 int (*file_lock) (struct file *file, unsigned int cmd);
1522 int (*file_fcntl) (struct file *file, unsigned int cmd,
1524 int (*file_set_fowner) (struct file *file);
1525 int (*file_send_sigiotask) (struct task_struct *tsk,
1526 struct fown_struct *fown, int sig);
1527 int (*file_receive) (struct file *file);
1528 int (*dentry_open) (struct file *file, const struct cred *cred);
1530 int (*task_create) (unsigned long clone_flags);
1531 int (*cred_alloc_blank) (struct cred *cred, gfp_t gfp);
1532 void (*cred_free) (struct cred *cred);
1533 int (*cred_prepare)(struct cred *new, const struct cred *old,
1535 void (*cred_transfer)(struct cred *new, const struct cred *old);
1536 int (*kernel_act_as)(struct cred *new, u32 secid);
1537 int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
1538 int (*kernel_module_request)(char *kmod_name);
1539 int (*task_setuid) (uid_t id0, uid_t id1, uid_t id2, int flags);
1540 int (*task_fix_setuid) (struct cred *new, const struct cred *old,
1542 int (*task_setgid) (gid_t id0, gid_t id1, gid_t id2, int flags);
1543 int (*task_setpgid) (struct task_struct *p, pid_t pgid);
1544 int (*task_getpgid) (struct task_struct *p);
1545 int (*task_getsid) (struct task_struct *p);
1546 void (*task_getsecid) (struct task_struct *p, u32 *secid);
1547 int (*task_setgroups) (struct group_info *group_info);
1548 int (*task_setnice) (struct task_struct *p, int nice);
1549 int (*task_setioprio) (struct task_struct *p, int ioprio);
1550 int (*task_getioprio) (struct task_struct *p);
1551 int (*task_setrlimit) (unsigned int resource, struct rlimit *new_rlim);
1552 int (*task_setscheduler) (struct task_struct *p, int policy,
1553 struct sched_param *lp);
1554 int (*task_getscheduler) (struct task_struct *p);
1555 int (*task_movememory) (struct task_struct *p);
1556 int (*task_kill) (struct task_struct *p,
1557 struct siginfo *info, int sig, u32 secid);
1558 int (*task_wait) (struct task_struct *p);
1559 int (*task_prctl) (int option, unsigned long arg2,
1560 unsigned long arg3, unsigned long arg4,
1561 unsigned long arg5);
1562 void (*task_to_inode) (struct task_struct *p, struct inode *inode);
1564 int (*ipc_permission) (struct kern_ipc_perm *ipcp, short flag);
1565 void (*ipc_getsecid) (struct kern_ipc_perm *ipcp, u32 *secid);
1567 int (*msg_msg_alloc_security) (struct msg_msg *msg);
1568 void (*msg_msg_free_security) (struct msg_msg *msg);
1570 int (*msg_queue_alloc_security) (struct msg_queue *msq);
1571 void (*msg_queue_free_security) (struct msg_queue *msq);
1572 int (*msg_queue_associate) (struct msg_queue *msq, int msqflg);
1573 int (*msg_queue_msgctl) (struct msg_queue *msq, int cmd);
1574 int (*msg_queue_msgsnd) (struct msg_queue *msq,
1575 struct msg_msg *msg, int msqflg);
1576 int (*msg_queue_msgrcv) (struct msg_queue *msq,
1577 struct msg_msg *msg,
1578 struct task_struct *target,
1579 long type, int mode);
1581 int (*shm_alloc_security) (struct shmid_kernel *shp);
1582 void (*shm_free_security) (struct shmid_kernel *shp);
1583 int (*shm_associate) (struct shmid_kernel *shp, int shmflg);
1584 int (*shm_shmctl) (struct shmid_kernel *shp, int cmd);
1585 int (*shm_shmat) (struct shmid_kernel *shp,
1586 char __user *shmaddr, int shmflg);
1588 int (*sem_alloc_security) (struct sem_array *sma);
1589 void (*sem_free_security) (struct sem_array *sma);
1590 int (*sem_associate) (struct sem_array *sma, int semflg);
1591 int (*sem_semctl) (struct sem_array *sma, int cmd);
1592 int (*sem_semop) (struct sem_array *sma,
1593 struct sembuf *sops, unsigned nsops, int alter);
1595 int (*netlink_send) (struct sock *sk, struct sk_buff *skb);
1596 int (*netlink_recv) (struct sk_buff *skb, int cap);
1598 void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1600 int (*getprocattr) (struct task_struct *p, char *name, char **value);
1601 int (*setprocattr) (struct task_struct *p, char *name, void *value, size_t size);
1602 int (*secid_to_secctx) (u32 secid, char **secdata, u32 *seclen);
1603 int (*secctx_to_secid) (const char *secdata, u32 seclen, u32 *secid);
1604 void (*release_secctx) (char *secdata, u32 seclen);
1606 int (*inode_notifysecctx)(struct inode *inode, void *ctx, u32 ctxlen);
1607 int (*inode_setsecctx)(struct dentry *dentry, void *ctx, u32 ctxlen);
1608 int (*inode_getsecctx)(struct inode *inode, void **ctx, u32 *ctxlen);
1610 #ifdef CONFIG_SECURITY_NETWORK
1611 int (*unix_stream_connect) (struct socket *sock,
1612 struct socket *other, struct sock *newsk);
1613 int (*unix_may_send) (struct socket *sock, struct socket *other);
1615 int (*socket_create) (int family, int type, int protocol, int kern);
1616 int (*socket_post_create) (struct socket *sock, int family,
1617 int type, int protocol, int kern);
1618 int (*socket_bind) (struct socket *sock,
1619 struct sockaddr *address, int addrlen);
1620 int (*socket_connect) (struct socket *sock,
1621 struct sockaddr *address, int addrlen);
1622 int (*socket_listen) (struct socket *sock, int backlog);
1623 int (*socket_accept) (struct socket *sock, struct socket *newsock);
1624 int (*socket_sendmsg) (struct socket *sock,
1625 struct msghdr *msg, int size);
1626 int (*socket_recvmsg) (struct socket *sock,
1627 struct msghdr *msg, int size, int flags);
1628 int (*socket_getsockname) (struct socket *sock);
1629 int (*socket_getpeername) (struct socket *sock);
1630 int (*socket_getsockopt) (struct socket *sock, int level, int optname);
1631 int (*socket_setsockopt) (struct socket *sock, int level, int optname);
1632 int (*socket_shutdown) (struct socket *sock, int how);
1633 int (*socket_sock_rcv_skb) (struct sock *sk, struct sk_buff *skb);
1634 int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
1635 int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
1636 int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
1637 void (*sk_free_security) (struct sock *sk);
1638 void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
1639 void (*sk_getsecid) (struct sock *sk, u32 *secid);
1640 void (*sock_graft) (struct sock *sk, struct socket *parent);
1641 int (*inet_conn_request) (struct sock *sk, struct sk_buff *skb,
1642 struct request_sock *req);
1643 void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req);
1644 void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb);
1645 void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
1646 int (*tun_dev_create)(void);
1647 void (*tun_dev_post_create)(struct sock *sk);
1648 int (*tun_dev_attach)(struct sock *sk);
1649 #endif /* CONFIG_SECURITY_NETWORK */
1651 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1652 int (*xfrm_policy_alloc_security) (struct xfrm_sec_ctx **ctxp,
1653 struct xfrm_user_sec_ctx *sec_ctx);
1654 int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
1655 void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
1656 int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
1657 int (*xfrm_state_alloc_security) (struct xfrm_state *x,
1658 struct xfrm_user_sec_ctx *sec_ctx,
1660 void (*xfrm_state_free_security) (struct xfrm_state *x);
1661 int (*xfrm_state_delete_security) (struct xfrm_state *x);
1662 int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1663 int (*xfrm_state_pol_flow_match) (struct xfrm_state *x,
1664 struct xfrm_policy *xp,
1666 int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall);
1667 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1669 /* key management security hooks */
1671 int (*key_alloc) (struct key *key, const struct cred *cred, unsigned long flags);
1672 void (*key_free) (struct key *key);
1673 int (*key_permission) (key_ref_t key_ref,
1674 const struct cred *cred,
1676 int (*key_getsecurity)(struct key *key, char **_buffer);
1677 int (*key_session_to_parent)(const struct cred *cred,
1678 const struct cred *parent_cred,
1680 #endif /* CONFIG_KEYS */
1683 int (*audit_rule_init) (u32 field, u32 op, char *rulestr, void **lsmrule);
1684 int (*audit_rule_known) (struct audit_krule *krule);
1685 int (*audit_rule_match) (u32 secid, u32 field, u32 op, void *lsmrule,
1686 struct audit_context *actx);
1687 void (*audit_rule_free) (void *lsmrule);
1688 #endif /* CONFIG_AUDIT */
1692 extern int security_init(void);
1693 extern int security_module_enable(struct security_operations *ops);
1694 extern int register_security(struct security_operations *ops);
1696 /* Security operations */
1697 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
1698 int security_ptrace_traceme(struct task_struct *parent);
1699 int security_capget(struct task_struct *target,
1700 kernel_cap_t *effective,
1701 kernel_cap_t *inheritable,
1702 kernel_cap_t *permitted);
1703 int security_capset(struct cred *new, const struct cred *old,
1704 const kernel_cap_t *effective,
1705 const kernel_cap_t *inheritable,
1706 const kernel_cap_t *permitted);
1707 int security_capable(int cap);
1708 int security_real_capable(struct task_struct *tsk, int cap);
1709 int security_real_capable_noaudit(struct task_struct *tsk, int cap);
1710 int security_acct(struct file *file);
1711 int security_sysctl(struct ctl_table *table, int op);
1712 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
1713 int security_quota_on(struct dentry *dentry);
1714 int security_syslog(int type, bool from_file);
1715 int security_settime(struct timespec *ts, struct timezone *tz);
1716 int security_vm_enough_memory(long pages);
1717 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
1718 int security_vm_enough_memory_kern(long pages);
1719 int security_bprm_set_creds(struct linux_binprm *bprm);
1720 int security_bprm_check(struct linux_binprm *bprm);
1721 void security_bprm_committing_creds(struct linux_binprm *bprm);
1722 void security_bprm_committed_creds(struct linux_binprm *bprm);
1723 int security_bprm_secureexec(struct linux_binprm *bprm);
1724 int security_sb_alloc(struct super_block *sb);
1725 void security_sb_free(struct super_block *sb);
1726 int security_sb_copy_data(char *orig, char *copy);
1727 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
1728 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
1729 int security_sb_statfs(struct dentry *dentry);
1730 int security_sb_mount(char *dev_name, struct path *path,
1731 char *type, unsigned long flags, void *data);
1732 int security_sb_umount(struct vfsmount *mnt, int flags);
1733 int security_sb_pivotroot(struct path *old_path, struct path *new_path);
1734 int security_sb_set_mnt_opts(struct super_block *sb, struct security_mnt_opts *opts);
1735 void security_sb_clone_mnt_opts(const struct super_block *oldsb,
1736 struct super_block *newsb);
1737 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
1739 int security_inode_alloc(struct inode *inode);
1740 void security_inode_free(struct inode *inode);
1741 int security_inode_init_security(struct inode *inode, struct inode *dir,
1742 char **name, void **value, size_t *len);
1743 int security_inode_create(struct inode *dir, struct dentry *dentry, int mode);
1744 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1745 struct dentry *new_dentry);
1746 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
1747 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
1748 const char *old_name);
1749 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode);
1750 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
1751 int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev);
1752 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
1753 struct inode *new_dir, struct dentry *new_dentry);
1754 int security_inode_readlink(struct dentry *dentry);
1755 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
1756 int security_inode_permission(struct inode *inode, int mask);
1757 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
1758 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
1759 int security_inode_setxattr(struct dentry *dentry, const char *name,
1760 const void *value, size_t size, int flags);
1761 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1762 const void *value, size_t size, int flags);
1763 int security_inode_getxattr(struct dentry *dentry, const char *name);
1764 int security_inode_listxattr(struct dentry *dentry);
1765 int security_inode_removexattr(struct dentry *dentry, const char *name);
1766 int security_inode_need_killpriv(struct dentry *dentry);
1767 int security_inode_killpriv(struct dentry *dentry);
1768 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
1769 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1770 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
1771 void security_inode_getsecid(const struct inode *inode, u32 *secid);
1772 int security_file_permission(struct file *file, int mask);
1773 int security_file_alloc(struct file *file);
1774 void security_file_free(struct file *file);
1775 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
1776 int security_file_mmap(struct file *file, unsigned long reqprot,
1777 unsigned long prot, unsigned long flags,
1778 unsigned long addr, unsigned long addr_only);
1779 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1780 unsigned long prot);
1781 int security_file_lock(struct file *file, unsigned int cmd);
1782 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
1783 int security_file_set_fowner(struct file *file);
1784 int security_file_send_sigiotask(struct task_struct *tsk,
1785 struct fown_struct *fown, int sig);
1786 int security_file_receive(struct file *file);
1787 int security_dentry_open(struct file *file, const struct cred *cred);
1788 int security_task_create(unsigned long clone_flags);
1789 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
1790 void security_cred_free(struct cred *cred);
1791 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
1792 void security_transfer_creds(struct cred *new, const struct cred *old);
1793 int security_kernel_act_as(struct cred *new, u32 secid);
1794 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
1795 int security_kernel_module_request(char *kmod_name);
1796 int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags);
1797 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1799 int security_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags);
1800 int security_task_setpgid(struct task_struct *p, pid_t pgid);
1801 int security_task_getpgid(struct task_struct *p);
1802 int security_task_getsid(struct task_struct *p);
1803 void security_task_getsecid(struct task_struct *p, u32 *secid);
1804 int security_task_setgroups(struct group_info *group_info);
1805 int security_task_setnice(struct task_struct *p, int nice);
1806 int security_task_setioprio(struct task_struct *p, int ioprio);
1807 int security_task_getioprio(struct task_struct *p);
1808 int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim);
1809 int security_task_setscheduler(struct task_struct *p,
1810 int policy, struct sched_param *lp);
1811 int security_task_getscheduler(struct task_struct *p);
1812 int security_task_movememory(struct task_struct *p);
1813 int security_task_kill(struct task_struct *p, struct siginfo *info,
1814 int sig, u32 secid);
1815 int security_task_wait(struct task_struct *p);
1816 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1817 unsigned long arg4, unsigned long arg5);
1818 void security_task_to_inode(struct task_struct *p, struct inode *inode);
1819 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
1820 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
1821 int security_msg_msg_alloc(struct msg_msg *msg);
1822 void security_msg_msg_free(struct msg_msg *msg);
1823 int security_msg_queue_alloc(struct msg_queue *msq);
1824 void security_msg_queue_free(struct msg_queue *msq);
1825 int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
1826 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
1827 int security_msg_queue_msgsnd(struct msg_queue *msq,
1828 struct msg_msg *msg, int msqflg);
1829 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1830 struct task_struct *target, long type, int mode);
1831 int security_shm_alloc(struct shmid_kernel *shp);
1832 void security_shm_free(struct shmid_kernel *shp);
1833 int security_shm_associate(struct shmid_kernel *shp, int shmflg);
1834 int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
1835 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
1836 int security_sem_alloc(struct sem_array *sma);
1837 void security_sem_free(struct sem_array *sma);
1838 int security_sem_associate(struct sem_array *sma, int semflg);
1839 int security_sem_semctl(struct sem_array *sma, int cmd);
1840 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1841 unsigned nsops, int alter);
1842 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
1843 int security_getprocattr(struct task_struct *p, char *name, char **value);
1844 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
1845 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
1846 int security_netlink_recv(struct sk_buff *skb, int cap);
1847 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
1848 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
1849 void security_release_secctx(char *secdata, u32 seclen);
1851 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
1852 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
1853 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
1854 #else /* CONFIG_SECURITY */
1855 struct security_mnt_opts {
1858 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
1862 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
1867 * This is the default capabilities functionality. Most of these functions
1868 * are just stubbed out, but a few must call the proper capable code.
1871 static inline int security_init(void)
1876 static inline int security_ptrace_access_check(struct task_struct *child,
1879 return cap_ptrace_access_check(child, mode);
1882 static inline int security_ptrace_traceme(struct task_struct *parent)
1884 return cap_ptrace_traceme(parent);
1887 static inline int security_capget(struct task_struct *target,
1888 kernel_cap_t *effective,
1889 kernel_cap_t *inheritable,
1890 kernel_cap_t *permitted)
1892 return cap_capget(target, effective, inheritable, permitted);
1895 static inline int security_capset(struct cred *new,
1896 const struct cred *old,
1897 const kernel_cap_t *effective,
1898 const kernel_cap_t *inheritable,
1899 const kernel_cap_t *permitted)
1901 return cap_capset(new, old, effective, inheritable, permitted);
1904 static inline int security_capable(int cap)
1906 return cap_capable(current, current_cred(), cap, SECURITY_CAP_AUDIT);
1909 static inline int security_real_capable(struct task_struct *tsk, int cap)
1914 ret = cap_capable(tsk, __task_cred(tsk), cap, SECURITY_CAP_AUDIT);
1920 int security_real_capable_noaudit(struct task_struct *tsk, int cap)
1925 ret = cap_capable(tsk, __task_cred(tsk), cap,
1926 SECURITY_CAP_NOAUDIT);
1931 static inline int security_acct(struct file *file)
1936 static inline int security_sysctl(struct ctl_table *table, int op)
1941 static inline int security_quotactl(int cmds, int type, int id,
1942 struct super_block *sb)
1947 static inline int security_quota_on(struct dentry *dentry)
1952 static inline int security_syslog(int type, bool from_file)
1954 return cap_syslog(type, from_file);
1957 static inline int security_settime(struct timespec *ts, struct timezone *tz)
1959 return cap_settime(ts, tz);
1962 static inline int security_vm_enough_memory(long pages)
1964 WARN_ON(current->mm == NULL);
1965 return cap_vm_enough_memory(current->mm, pages);
1968 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
1970 WARN_ON(mm == NULL);
1971 return cap_vm_enough_memory(mm, pages);
1974 static inline int security_vm_enough_memory_kern(long pages)
1976 /* If current->mm is a kernel thread then we will pass NULL,
1977 for this specific case that is fine */
1978 return cap_vm_enough_memory(current->mm, pages);
1981 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
1983 return cap_bprm_set_creds(bprm);
1986 static inline int security_bprm_check(struct linux_binprm *bprm)
1991 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
1995 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
1999 static inline int security_bprm_secureexec(struct linux_binprm *bprm)
2001 return cap_bprm_secureexec(bprm);
2004 static inline int security_sb_alloc(struct super_block *sb)
2009 static inline void security_sb_free(struct super_block *sb)
2012 static inline int security_sb_copy_data(char *orig, char *copy)
2017 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
2022 static inline int security_sb_show_options(struct seq_file *m,
2023 struct super_block *sb)
2028 static inline int security_sb_statfs(struct dentry *dentry)
2033 static inline int security_sb_mount(char *dev_name, struct path *path,
2034 char *type, unsigned long flags,
2040 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
2045 static inline int security_sb_pivotroot(struct path *old_path,
2046 struct path *new_path)
2051 static inline int security_sb_set_mnt_opts(struct super_block *sb,
2052 struct security_mnt_opts *opts)
2057 static inline void security_sb_clone_mnt_opts(const struct super_block *oldsb,
2058 struct super_block *newsb)
2061 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
2066 static inline int security_inode_alloc(struct inode *inode)
2071 static inline void security_inode_free(struct inode *inode)
2074 static inline int security_inode_init_security(struct inode *inode,
2083 static inline int security_inode_create(struct inode *dir,
2084 struct dentry *dentry,
2090 static inline int security_inode_link(struct dentry *old_dentry,
2092 struct dentry *new_dentry)
2097 static inline int security_inode_unlink(struct inode *dir,
2098 struct dentry *dentry)
2103 static inline int security_inode_symlink(struct inode *dir,
2104 struct dentry *dentry,
2105 const char *old_name)
2110 static inline int security_inode_mkdir(struct inode *dir,
2111 struct dentry *dentry,
2117 static inline int security_inode_rmdir(struct inode *dir,
2118 struct dentry *dentry)
2123 static inline int security_inode_mknod(struct inode *dir,
2124 struct dentry *dentry,
2125 int mode, dev_t dev)
2130 static inline int security_inode_rename(struct inode *old_dir,
2131 struct dentry *old_dentry,
2132 struct inode *new_dir,
2133 struct dentry *new_dentry)
2138 static inline int security_inode_readlink(struct dentry *dentry)
2143 static inline int security_inode_follow_link(struct dentry *dentry,
2144 struct nameidata *nd)
2149 static inline int security_inode_permission(struct inode *inode, int mask)
2154 static inline int security_inode_setattr(struct dentry *dentry,
2160 static inline int security_inode_getattr(struct vfsmount *mnt,
2161 struct dentry *dentry)
2166 static inline int security_inode_setxattr(struct dentry *dentry,
2167 const char *name, const void *value, size_t size, int flags)
2169 return cap_inode_setxattr(dentry, name, value, size, flags);
2172 static inline void security_inode_post_setxattr(struct dentry *dentry,
2173 const char *name, const void *value, size_t size, int flags)
2176 static inline int security_inode_getxattr(struct dentry *dentry,
2182 static inline int security_inode_listxattr(struct dentry *dentry)
2187 static inline int security_inode_removexattr(struct dentry *dentry,
2190 return cap_inode_removexattr(dentry, name);
2193 static inline int security_inode_need_killpriv(struct dentry *dentry)
2195 return cap_inode_need_killpriv(dentry);
2198 static inline int security_inode_killpriv(struct dentry *dentry)
2200 return cap_inode_killpriv(dentry);
2203 static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
2208 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
2213 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
2218 static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
2223 static inline int security_file_permission(struct file *file, int mask)
2228 static inline int security_file_alloc(struct file *file)
2233 static inline void security_file_free(struct file *file)
2236 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
2242 static inline int security_file_mmap(struct file *file, unsigned long reqprot,
2244 unsigned long flags,
2246 unsigned long addr_only)
2248 return cap_file_mmap(file, reqprot, prot, flags, addr, addr_only);
2251 static inline int security_file_mprotect(struct vm_area_struct *vma,
2252 unsigned long reqprot,
2258 static inline int security_file_lock(struct file *file, unsigned int cmd)
2263 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
2269 static inline int security_file_set_fowner(struct file *file)
2274 static inline int security_file_send_sigiotask(struct task_struct *tsk,
2275 struct fown_struct *fown,
2281 static inline int security_file_receive(struct file *file)
2286 static inline int security_dentry_open(struct file *file,
2287 const struct cred *cred)
2292 static inline int security_task_create(unsigned long clone_flags)
2297 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
2302 static inline void security_cred_free(struct cred *cred)
2305 static inline int security_prepare_creds(struct cred *new,
2306 const struct cred *old,
2312 static inline void security_transfer_creds(struct cred *new,
2313 const struct cred *old)
2317 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
2322 static inline int security_kernel_create_files_as(struct cred *cred,
2323 struct inode *inode)
2328 static inline int security_kernel_module_request(char *kmod_name)
2333 static inline int security_task_setuid(uid_t id0, uid_t id1, uid_t id2,
2339 static inline int security_task_fix_setuid(struct cred *new,
2340 const struct cred *old,
2343 return cap_task_fix_setuid(new, old, flags);
2346 static inline int security_task_setgid(gid_t id0, gid_t id1, gid_t id2,
2352 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
2357 static inline int security_task_getpgid(struct task_struct *p)
2362 static inline int security_task_getsid(struct task_struct *p)
2367 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
2372 static inline int security_task_setgroups(struct group_info *group_info)
2377 static inline int security_task_setnice(struct task_struct *p, int nice)
2379 return cap_task_setnice(p, nice);
2382 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
2384 return cap_task_setioprio(p, ioprio);
2387 static inline int security_task_getioprio(struct task_struct *p)
2392 static inline int security_task_setrlimit(unsigned int resource,
2393 struct rlimit *new_rlim)
2398 static inline int security_task_setscheduler(struct task_struct *p,
2400 struct sched_param *lp)
2402 return cap_task_setscheduler(p, policy, lp);
2405 static inline int security_task_getscheduler(struct task_struct *p)
2410 static inline int security_task_movememory(struct task_struct *p)
2415 static inline int security_task_kill(struct task_struct *p,
2416 struct siginfo *info, int sig,
2422 static inline int security_task_wait(struct task_struct *p)
2427 static inline int security_task_prctl(int option, unsigned long arg2,
2432 return cap_task_prctl(option, arg2, arg3, arg3, arg5);
2435 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
2438 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
2444 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
2449 static inline int security_msg_msg_alloc(struct msg_msg *msg)
2454 static inline void security_msg_msg_free(struct msg_msg *msg)
2457 static inline int security_msg_queue_alloc(struct msg_queue *msq)
2462 static inline void security_msg_queue_free(struct msg_queue *msq)
2465 static inline int security_msg_queue_associate(struct msg_queue *msq,
2471 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
2476 static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
2477 struct msg_msg *msg, int msqflg)
2482 static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
2483 struct msg_msg *msg,
2484 struct task_struct *target,
2485 long type, int mode)
2490 static inline int security_shm_alloc(struct shmid_kernel *shp)
2495 static inline void security_shm_free(struct shmid_kernel *shp)
2498 static inline int security_shm_associate(struct shmid_kernel *shp,
2504 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
2509 static inline int security_shm_shmat(struct shmid_kernel *shp,
2510 char __user *shmaddr, int shmflg)
2515 static inline int security_sem_alloc(struct sem_array *sma)
2520 static inline void security_sem_free(struct sem_array *sma)
2523 static inline int security_sem_associate(struct sem_array *sma, int semflg)
2528 static inline int security_sem_semctl(struct sem_array *sma, int cmd)
2533 static inline int security_sem_semop(struct sem_array *sma,
2534 struct sembuf *sops, unsigned nsops,
2540 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
2543 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
2548 static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2553 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
2555 return cap_netlink_send(sk, skb);
2558 static inline int security_netlink_recv(struct sk_buff *skb, int cap)
2560 return cap_netlink_recv(skb, cap);
2563 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2568 static inline int security_secctx_to_secid(const char *secdata,
2575 static inline void security_release_secctx(char *secdata, u32 seclen)
2579 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
2583 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
2587 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
2591 #endif /* CONFIG_SECURITY */
2593 #ifdef CONFIG_SECURITY_NETWORK
2595 int security_unix_stream_connect(struct socket *sock, struct socket *other,
2596 struct sock *newsk);
2597 int security_unix_may_send(struct socket *sock, struct socket *other);
2598 int security_socket_create(int family, int type, int protocol, int kern);
2599 int security_socket_post_create(struct socket *sock, int family,
2600 int type, int protocol, int kern);
2601 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
2602 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
2603 int security_socket_listen(struct socket *sock, int backlog);
2604 int security_socket_accept(struct socket *sock, struct socket *newsock);
2605 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
2606 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2607 int size, int flags);
2608 int security_socket_getsockname(struct socket *sock);
2609 int security_socket_getpeername(struct socket *sock);
2610 int security_socket_getsockopt(struct socket *sock, int level, int optname);
2611 int security_socket_setsockopt(struct socket *sock, int level, int optname);
2612 int security_socket_shutdown(struct socket *sock, int how);
2613 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
2614 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2615 int __user *optlen, unsigned len);
2616 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
2617 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
2618 void security_sk_free(struct sock *sk);
2619 void security_sk_clone(const struct sock *sk, struct sock *newsk);
2620 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
2621 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
2622 void security_sock_graft(struct sock*sk, struct socket *parent);
2623 int security_inet_conn_request(struct sock *sk,
2624 struct sk_buff *skb, struct request_sock *req);
2625 void security_inet_csk_clone(struct sock *newsk,
2626 const struct request_sock *req);
2627 void security_inet_conn_established(struct sock *sk,
2628 struct sk_buff *skb);
2629 int security_tun_dev_create(void);
2630 void security_tun_dev_post_create(struct sock *sk);
2631 int security_tun_dev_attach(struct sock *sk);
2633 #else /* CONFIG_SECURITY_NETWORK */
2634 static inline int security_unix_stream_connect(struct socket *sock,
2635 struct socket *other,
2641 static inline int security_unix_may_send(struct socket *sock,
2642 struct socket *other)
2647 static inline int security_socket_create(int family, int type,
2648 int protocol, int kern)
2653 static inline int security_socket_post_create(struct socket *sock,
2656 int protocol, int kern)
2661 static inline int security_socket_bind(struct socket *sock,
2662 struct sockaddr *address,
2668 static inline int security_socket_connect(struct socket *sock,
2669 struct sockaddr *address,
2675 static inline int security_socket_listen(struct socket *sock, int backlog)
2680 static inline int security_socket_accept(struct socket *sock,
2681 struct socket *newsock)
2686 static inline int security_socket_sendmsg(struct socket *sock,
2687 struct msghdr *msg, int size)
2692 static inline int security_socket_recvmsg(struct socket *sock,
2693 struct msghdr *msg, int size,
2699 static inline int security_socket_getsockname(struct socket *sock)
2704 static inline int security_socket_getpeername(struct socket *sock)
2709 static inline int security_socket_getsockopt(struct socket *sock,
2710 int level, int optname)
2715 static inline int security_socket_setsockopt(struct socket *sock,
2716 int level, int optname)
2721 static inline int security_socket_shutdown(struct socket *sock, int how)
2725 static inline int security_sock_rcv_skb(struct sock *sk,
2726 struct sk_buff *skb)
2731 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2732 int __user *optlen, unsigned len)
2734 return -ENOPROTOOPT;
2737 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
2739 return -ENOPROTOOPT;
2742 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2747 static inline void security_sk_free(struct sock *sk)
2751 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
2755 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
2759 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2763 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
2767 static inline int security_inet_conn_request(struct sock *sk,
2768 struct sk_buff *skb, struct request_sock *req)
2773 static inline void security_inet_csk_clone(struct sock *newsk,
2774 const struct request_sock *req)
2778 static inline void security_inet_conn_established(struct sock *sk,
2779 struct sk_buff *skb)
2783 static inline int security_tun_dev_create(void)
2788 static inline void security_tun_dev_post_create(struct sock *sk)
2792 static inline int security_tun_dev_attach(struct sock *sk)
2796 #endif /* CONFIG_SECURITY_NETWORK */
2798 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2800 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx);
2801 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
2802 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
2803 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
2804 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
2805 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2806 struct xfrm_sec_ctx *polsec, u32 secid);
2807 int security_xfrm_state_delete(struct xfrm_state *x);
2808 void security_xfrm_state_free(struct xfrm_state *x);
2809 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
2810 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2811 struct xfrm_policy *xp, struct flowi *fl);
2812 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
2813 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
2815 #else /* CONFIG_SECURITY_NETWORK_XFRM */
2817 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
2822 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
2827 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
2831 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
2836 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
2837 struct xfrm_user_sec_ctx *sec_ctx)
2842 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2843 struct xfrm_sec_ctx *polsec, u32 secid)
2848 static inline void security_xfrm_state_free(struct xfrm_state *x)
2852 static inline int security_xfrm_state_delete(struct xfrm_state *x)
2857 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
2862 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2863 struct xfrm_policy *xp, struct flowi *fl)
2868 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
2873 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2877 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2879 #ifdef CONFIG_SECURITY_PATH
2880 int security_path_unlink(struct path *dir, struct dentry *dentry);
2881 int security_path_mkdir(struct path *dir, struct dentry *dentry, int mode);
2882 int security_path_rmdir(struct path *dir, struct dentry *dentry);
2883 int security_path_mknod(struct path *dir, struct dentry *dentry, int mode,
2885 int security_path_truncate(struct path *path, loff_t length,
2886 unsigned int time_attrs);
2887 int security_path_symlink(struct path *dir, struct dentry *dentry,
2888 const char *old_name);
2889 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
2890 struct dentry *new_dentry);
2891 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
2892 struct path *new_dir, struct dentry *new_dentry);
2893 int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
2895 int security_path_chown(struct path *path, uid_t uid, gid_t gid);
2896 int security_path_chroot(struct path *path);
2897 #else /* CONFIG_SECURITY_PATH */
2898 static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
2903 static inline int security_path_mkdir(struct path *dir, struct dentry *dentry,
2909 static inline int security_path_rmdir(struct path *dir, struct dentry *dentry)
2914 static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
2915 int mode, unsigned int dev)
2920 static inline int security_path_truncate(struct path *path, loff_t length,
2921 unsigned int time_attrs)
2926 static inline int security_path_symlink(struct path *dir, struct dentry *dentry,
2927 const char *old_name)
2932 static inline int security_path_link(struct dentry *old_dentry,
2933 struct path *new_dir,
2934 struct dentry *new_dentry)
2939 static inline int security_path_rename(struct path *old_dir,
2940 struct dentry *old_dentry,
2941 struct path *new_dir,
2942 struct dentry *new_dentry)
2947 static inline int security_path_chmod(struct dentry *dentry,
2948 struct vfsmount *mnt,
2954 static inline int security_path_chown(struct path *path, uid_t uid, gid_t gid)
2959 static inline int security_path_chroot(struct path *path)
2963 #endif /* CONFIG_SECURITY_PATH */
2966 #ifdef CONFIG_SECURITY
2968 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
2969 void security_key_free(struct key *key);
2970 int security_key_permission(key_ref_t key_ref,
2971 const struct cred *cred, key_perm_t perm);
2972 int security_key_getsecurity(struct key *key, char **_buffer);
2973 int security_key_session_to_parent(const struct cred *cred,
2974 const struct cred *parent_cred,
2979 static inline int security_key_alloc(struct key *key,
2980 const struct cred *cred,
2981 unsigned long flags)
2986 static inline void security_key_free(struct key *key)
2990 static inline int security_key_permission(key_ref_t key_ref,
2991 const struct cred *cred,
2997 static inline int security_key_getsecurity(struct key *key, char **_buffer)
3003 static inline int security_key_session_to_parent(const struct cred *cred,
3004 const struct cred *parent_cred,
3011 #endif /* CONFIG_KEYS */
3014 #ifdef CONFIG_SECURITY
3015 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
3016 int security_audit_rule_known(struct audit_krule *krule);
3017 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
3018 struct audit_context *actx);
3019 void security_audit_rule_free(void *lsmrule);
3023 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
3029 static inline int security_audit_rule_known(struct audit_krule *krule)
3034 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
3035 void *lsmrule, struct audit_context *actx)
3040 static inline void security_audit_rule_free(void *lsmrule)
3043 #endif /* CONFIG_SECURITY */
3044 #endif /* CONFIG_AUDIT */
3046 #ifdef CONFIG_SECURITYFS
3048 extern struct dentry *securityfs_create_file(const char *name, mode_t mode,
3049 struct dentry *parent, void *data,
3050 const struct file_operations *fops);
3051 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
3052 extern void securityfs_remove(struct dentry *dentry);
3054 #else /* CONFIG_SECURITYFS */
3056 static inline struct dentry *securityfs_create_dir(const char *name,
3057 struct dentry *parent)
3059 return ERR_PTR(-ENODEV);
3062 static inline struct dentry *securityfs_create_file(const char *name,
3064 struct dentry *parent,
3066 const struct file_operations *fops)
3068 return ERR_PTR(-ENODEV);
3071 static inline void securityfs_remove(struct dentry *dentry)
3076 #ifdef CONFIG_SECURITY
3078 static inline char *alloc_secdata(void)
3080 return (char *)get_zeroed_page(GFP_KERNEL);
3083 static inline void free_secdata(void *secdata)
3085 free_page((unsigned long)secdata);
3090 static inline char *alloc_secdata(void)
3095 static inline void free_secdata(void *secdata)
3097 #endif /* CONFIG_SECURITY */
3099 #endif /* ! __LINUX_SECURITY_H */