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 * Handle a failed umount of the @mnt mounted filesystem, e.g. re-opening
277 * any files that were closed by umount_close. This hook is called during
278 * an umount operation if the umount fails after a call to the
280 * @mnt contains the mounted filesystem.
282 * Update the security module's state when a filesystem is remounted.
283 * This hook is only called if the remount was successful.
284 * @mnt contains the mounted file system.
285 * @flags contains the new filesystem flags.
286 * @data contains the filesystem-specific data.
288 * Update the security module's state when a filesystem is mounted.
289 * This hook is called any time a mount is successfully grafetd to
291 * @mnt contains the mounted filesystem.
292 * @mountpoint contains the path for the mount point.
294 * Check permission before pivoting the root filesystem.
295 * @old_path contains the path for the new location of the current root (put_old).
296 * @new_path contains the path for the new root (new_root).
297 * Return 0 if permission is granted.
298 * @sb_post_pivotroot:
299 * Update module state after a successful pivot.
300 * @old_path contains the path for the old root.
301 * @new_path contains the path for the new root.
303 * Set the security relevant mount options used for a superblock
304 * @sb the superblock to set security mount options for
305 * @opts binary data structure containing all lsm mount data
306 * @sb_clone_mnt_opts:
307 * Copy all security options from a given superblock to another
308 * @oldsb old superblock which contain information to clone
309 * @newsb new superblock which needs filled in
310 * @sb_parse_opts_str:
311 * Parse a string of security data filling in the opts structure
312 * @options string containing all mount options known by the LSM
313 * @opts binary data structure usable by the LSM
315 * Security hooks for inode operations.
317 * @inode_alloc_security:
318 * Allocate and attach a security structure to @inode->i_security. The
319 * i_security field is initialized to NULL when the inode structure is
321 * @inode contains the inode structure.
322 * Return 0 if operation was successful.
323 * @inode_free_security:
324 * @inode contains the inode structure.
325 * Deallocate the inode security structure and set @inode->i_security to
327 * @inode_init_security:
328 * Obtain the security attribute name suffix and value to set on a newly
329 * created inode and set up the incore security field for the new inode.
330 * This hook is called by the fs code as part of the inode creation
331 * transaction and provides for atomic labeling of the inode, unlike
332 * the post_create/mkdir/... hooks called by the VFS. The hook function
333 * is expected to allocate the name and value via kmalloc, with the caller
334 * being responsible for calling kfree after using them.
335 * If the security module does not use security attributes or does
336 * not wish to put a security attribute on this particular inode,
337 * then it should return -EOPNOTSUPP to skip this processing.
338 * @inode contains the inode structure of the newly created inode.
339 * @dir contains the inode structure of the parent directory.
340 * @name will be set to the allocated name suffix (e.g. selinux).
341 * @value will be set to the allocated attribute value.
342 * @len will be set to the length of the value.
343 * Returns 0 if @name and @value have been successfully set,
344 * -EOPNOTSUPP if no security attribute is needed, or
345 * -ENOMEM on memory allocation failure.
347 * Check permission to create a regular file.
348 * @dir contains inode structure of the parent of the new file.
349 * @dentry contains the dentry structure for the file to be created.
350 * @mode contains the file mode of the file to be created.
351 * Return 0 if permission is granted.
353 * Check permission before creating a new hard link to a file.
354 * @old_dentry contains the dentry structure for an existing link to the file.
355 * @dir contains the inode structure of the parent directory of the new link.
356 * @new_dentry contains the dentry structure for the new link.
357 * Return 0 if permission is granted.
359 * Check permission before creating a new hard link to a file.
360 * @old_dentry contains the dentry structure for an existing link
362 * @new_dir contains the path structure of the parent directory of
364 * @new_dentry contains the dentry structure for the new link.
365 * Return 0 if permission is granted.
367 * Check the permission to remove a hard link to a file.
368 * @dir contains the inode structure of parent directory of the file.
369 * @dentry contains the dentry structure for file to be unlinked.
370 * Return 0 if permission is granted.
372 * Check the permission to remove a hard link to a file.
373 * @dir contains the path structure of parent directory of the file.
374 * @dentry contains the dentry structure for file to be unlinked.
375 * Return 0 if permission is granted.
377 * Check the permission to create a symbolic link to a file.
378 * @dir contains the inode structure of parent directory of the symbolic link.
379 * @dentry contains the dentry structure of the symbolic link.
380 * @old_name contains the pathname of file.
381 * Return 0 if permission is granted.
383 * Check the permission to create a symbolic link to a file.
384 * @dir contains the path structure of parent directory of
386 * @dentry contains the dentry structure of the symbolic link.
387 * @old_name contains the pathname of file.
388 * Return 0 if permission is granted.
390 * Check permissions to create a new directory in the existing directory
391 * associated with inode strcture @dir.
392 * @dir containst the inode structure of parent of the directory to be created.
393 * @dentry contains the dentry structure of new directory.
394 * @mode contains the mode of new directory.
395 * Return 0 if permission is granted.
397 * Check permissions to create a new directory in the existing directory
398 * associated with path strcture @path.
399 * @dir containst the path structure of parent of the directory
401 * @dentry contains the dentry structure of new directory.
402 * @mode contains the mode of new directory.
403 * Return 0 if permission is granted.
405 * Check the permission to remove a directory.
406 * @dir contains the inode structure of parent of the directory to be removed.
407 * @dentry contains the dentry structure of directory to be removed.
408 * Return 0 if permission is granted.
410 * Check the permission to remove a directory.
411 * @dir contains the path structure of parent of the directory to be
413 * @dentry contains the dentry structure of directory to be removed.
414 * Return 0 if permission is granted.
416 * Check permissions when creating a special file (or a socket or a fifo
417 * file created via the mknod system call). Note that if mknod operation
418 * is being done for a regular file, then the create hook will be called
420 * @dir contains the inode structure of parent of the new file.
421 * @dentry contains the dentry structure of the new file.
422 * @mode contains the mode of the new file.
423 * @dev contains the device number.
424 * Return 0 if permission is granted.
426 * Check permissions when creating a file. Note that this hook is called
427 * even if mknod operation is being done for a regular file.
428 * @dir contains the path structure of parent of the new file.
429 * @dentry contains the dentry structure of the new file.
430 * @mode contains the mode of the new file.
431 * @dev contains the undecoded device number. Use new_decode_dev() to get
432 * the decoded device number.
433 * Return 0 if permission is granted.
435 * Check for permission to rename a file or directory.
436 * @old_dir contains the inode structure for parent of the old link.
437 * @old_dentry contains the dentry structure of the old link.
438 * @new_dir contains the inode structure for parent of the new link.
439 * @new_dentry contains the dentry structure of the new link.
440 * Return 0 if permission is granted.
442 * Check for permission to rename a file or directory.
443 * @old_dir contains the path structure for parent of the old link.
444 * @old_dentry contains the dentry structure of the old link.
445 * @new_dir contains the path structure for parent of the new link.
446 * @new_dentry contains the dentry structure of the new link.
447 * Return 0 if permission is granted.
449 * Check for permission to change DAC's permission of a file or directory.
450 * @dentry contains the dentry structure.
451 * @mnt contains the vfsmnt structure.
452 * @mode contains DAC's mode.
453 * Return 0 if permission is granted.
455 * Check for permission to change owner/group of a file or directory.
456 * @path contains the path structure.
457 * @uid contains new owner's ID.
458 * @gid contains new group's ID.
459 * Return 0 if permission is granted.
461 * Check for permission to change root directory.
462 * @path contains the path structure.
463 * Return 0 if permission is granted.
465 * Check the permission to read the symbolic link.
466 * @dentry contains the dentry structure for the file link.
467 * Return 0 if permission is granted.
468 * @inode_follow_link:
469 * Check permission to follow a symbolic link when looking up a pathname.
470 * @dentry contains the dentry structure for the link.
471 * @nd contains the nameidata structure for the parent directory.
472 * Return 0 if permission is granted.
474 * Check permission before accessing an inode. This hook is called by the
475 * existing Linux permission function, so a security module can use it to
476 * provide additional checking for existing Linux permission checks.
477 * Notice that this hook is called when a file is opened (as well as many
478 * other operations), whereas the file_security_ops permission hook is
479 * called when the actual read/write operations are performed.
480 * @inode contains the inode structure to check.
481 * @mask contains the permission mask.
482 * @nd contains the nameidata (may be NULL).
483 * Return 0 if permission is granted.
485 * Check permission before setting file attributes. Note that the kernel
486 * call to notify_change is performed from several locations, whenever
487 * file attributes change (such as when a file is truncated, chown/chmod
488 * operations, transferring disk quotas, etc).
489 * @dentry contains the dentry structure for the file.
490 * @attr is the iattr structure containing the new file attributes.
491 * Return 0 if permission is granted.
493 * Check permission before truncating a file.
494 * @path contains the path structure for the file.
495 * @length is the new length of the file.
496 * @time_attrs is the flags passed to do_truncate().
497 * Return 0 if permission is granted.
499 * Check permission before obtaining file attributes.
500 * @mnt is the vfsmount where the dentry was looked up
501 * @dentry contains the dentry structure for the file.
502 * Return 0 if permission is granted.
504 * @inode contains the inode structure for deleted inode.
505 * This hook is called when a deleted inode is released (i.e. an inode
506 * with no hard links has its use count drop to zero). A security module
507 * can use this hook to release any persistent label associated with the
510 * Check permission before setting the extended attributes
511 * @value identified by @name for @dentry.
512 * Return 0 if permission is granted.
513 * @inode_post_setxattr:
514 * Update inode security field after successful setxattr operation.
515 * @value identified by @name for @dentry.
517 * Check permission before obtaining the extended attributes
518 * identified by @name for @dentry.
519 * Return 0 if permission is granted.
521 * Check permission before obtaining the list of extended attribute
523 * Return 0 if permission is granted.
524 * @inode_removexattr:
525 * Check permission before removing the extended attribute
526 * identified by @name for @dentry.
527 * Return 0 if permission is granted.
528 * @inode_getsecurity:
529 * Retrieve a copy of the extended attribute representation of the
530 * security label associated with @name for @inode via @buffer. Note that
531 * @name is the remainder of the attribute name after the security prefix
532 * has been removed. @alloc is used to specify of the call should return a
533 * value via the buffer or just the value length Return size of buffer on
535 * @inode_setsecurity:
536 * Set the security label associated with @name for @inode from the
537 * extended attribute value @value. @size indicates the size of the
538 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
539 * Note that @name is the remainder of the attribute name after the
540 * security. prefix has been removed.
541 * Return 0 on success.
542 * @inode_listsecurity:
543 * Copy the extended attribute names for the security labels
544 * associated with @inode into @buffer. The maximum size of @buffer
545 * is specified by @buffer_size. @buffer may be NULL to request
546 * the size of the buffer required.
547 * Returns number of bytes used/required on success.
548 * @inode_need_killpriv:
549 * Called when an inode has been changed.
550 * @dentry is the dentry being changed.
551 * Return <0 on error to abort the inode change operation.
552 * Return 0 if inode_killpriv does not need to be called.
553 * Return >0 if inode_killpriv does need to be called.
555 * The setuid bit is being removed. Remove similar security labels.
556 * Called with the dentry->d_inode->i_mutex held.
557 * @dentry is the dentry being changed.
558 * Return 0 on success. If error is returned, then the operation
559 * causing setuid bit removal is failed.
561 * Get the secid associated with the node.
562 * @inode contains a pointer to the inode.
563 * @secid contains a pointer to the location where result will be saved.
564 * In case of failure, @secid will be set to zero.
566 * Security hooks for file operations
569 * Check file permissions before accessing an open file. This hook is
570 * called by various operations that read or write files. A security
571 * module can use this hook to perform additional checking on these
572 * operations, e.g. to revalidate permissions on use to support privilege
573 * bracketing or policy changes. Notice that this hook is used when the
574 * actual read/write operations are performed, whereas the
575 * inode_security_ops hook is called when a file is opened (as well as
576 * many other operations).
577 * Caveat: Although this hook can be used to revalidate permissions for
578 * various system call operations that read or write files, it does not
579 * address the revalidation of permissions for memory-mapped files.
580 * Security modules must handle this separately if they need such
582 * @file contains the file structure being accessed.
583 * @mask contains the requested permissions.
584 * Return 0 if permission is granted.
585 * @file_alloc_security:
586 * Allocate and attach a security structure to the file->f_security field.
587 * The security field is initialized to NULL when the structure is first
589 * @file contains the file structure to secure.
590 * Return 0 if the hook is successful and permission is granted.
591 * @file_free_security:
592 * Deallocate and free any security structures stored in file->f_security.
593 * @file contains the file structure being modified.
595 * @file contains the file structure.
596 * @cmd contains the operation to perform.
597 * @arg contains the operational arguments.
598 * Check permission for an ioctl operation on @file. Note that @arg can
599 * sometimes represents a user space pointer; in other cases, it may be a
600 * simple integer value. When @arg represents a user space pointer, it
601 * should never be used by the security module.
602 * Return 0 if permission is granted.
604 * Check permissions for a mmap operation. The @file may be NULL, e.g.
605 * if mapping anonymous memory.
606 * @file contains the file structure for file to map (may be NULL).
607 * @reqprot contains the protection requested by the application.
608 * @prot contains the protection that will be applied by the kernel.
609 * @flags contains the operational flags.
610 * Return 0 if permission is granted.
612 * Check permissions before changing memory access permissions.
613 * @vma contains the memory region to modify.
614 * @reqprot contains the protection requested by the application.
615 * @prot contains the protection that will be applied by the kernel.
616 * Return 0 if permission is granted.
618 * Check permission before performing file locking operations.
619 * Note: this hook mediates both flock and fcntl style locks.
620 * @file contains the file structure.
621 * @cmd contains the posix-translated lock operation to perform
622 * (e.g. F_RDLCK, F_WRLCK).
623 * Return 0 if permission is granted.
625 * Check permission before allowing the file operation specified by @cmd
626 * from being performed on the file @file. Note that @arg can sometimes
627 * represents a user space pointer; in other cases, it may be a simple
628 * integer value. When @arg represents a user space pointer, it should
629 * never be used by the security module.
630 * @file contains the file structure.
631 * @cmd contains the operation to be performed.
632 * @arg contains the operational arguments.
633 * Return 0 if permission is granted.
635 * Save owner security information (typically from current->security) in
636 * file->f_security for later use by the send_sigiotask hook.
637 * @file contains the file structure to update.
638 * Return 0 on success.
639 * @file_send_sigiotask:
640 * Check permission for the file owner @fown to send SIGIO or SIGURG to the
641 * process @tsk. Note that this hook is sometimes called from interrupt.
642 * Note that the fown_struct, @fown, is never outside the context of a
643 * struct file, so the file structure (and associated security information)
644 * can always be obtained:
645 * container_of(fown, struct file, f_owner)
646 * @tsk contains the structure of task receiving signal.
647 * @fown contains the file owner information.
648 * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
649 * Return 0 if permission is granted.
651 * This hook allows security modules to control the ability of a process
652 * to receive an open file descriptor via socket IPC.
653 * @file contains the file structure being received.
654 * Return 0 if permission is granted.
656 * Security hook for dentry
659 * Save open-time permission checking state for later use upon
660 * file_permission, and recheck access if anything has changed
661 * since inode_permission.
663 * Security hooks for task operations.
666 * Check permission before creating a child process. See the clone(2)
667 * manual page for definitions of the @clone_flags.
668 * @clone_flags contains the flags indicating what should be shared.
669 * Return 0 if permission is granted.
671 * @cred points to the credentials.
672 * @gfp indicates the atomicity of any memory allocations.
673 * Only allocate sufficient memory and attach to @cred such that
674 * cred_transfer() will not get ENOMEM.
676 * @cred points to the credentials.
677 * Deallocate and clear the cred->security field in a set of credentials.
679 * @new points to the new credentials.
680 * @old points to the original credentials.
681 * @gfp indicates the atomicity of any memory allocations.
682 * Prepare a new set of credentials by copying the data from the old set.
684 * @new points to the new credentials.
685 * @old points to the original credentials.
686 * Install a new set of credentials.
688 * @new points to the new credentials.
689 * @old points to the original credentials.
690 * Transfer data from original creds to new creds
692 * Set the credentials for a kernel service to act as (subjective context).
693 * @new points to the credentials to be modified.
694 * @secid specifies the security ID to be set
695 * The current task must be the one that nominated @secid.
696 * Return 0 if successful.
697 * @kernel_create_files_as:
698 * Set the file creation context in a set of credentials to be the same as
699 * the objective context of the specified inode.
700 * @new points to the credentials to be modified.
701 * @inode points to the inode to use as a reference.
702 * The current task must be the one that nominated @inode.
703 * Return 0 if successful.
704 * @kernel_module_request:
705 * Ability to trigger the kernel to automatically upcall to userspace for
706 * userspace to load a kernel module with the given name.
707 * @kmod_name name of the module requested by the kernel
708 * Return 0 if successful.
710 * Check permission before setting one or more of the user identity
711 * attributes of the current process. The @flags parameter indicates
712 * which of the set*uid system calls invoked this hook and how to
713 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
714 * definitions at the beginning of this file for the @flags values and
716 * @id0 contains a uid.
717 * @id1 contains a uid.
718 * @id2 contains a uid.
719 * @flags contains one of the LSM_SETID_* values.
720 * Return 0 if permission is granted.
722 * Update the module's state after setting one or more of the user
723 * identity attributes of the current process. The @flags parameter
724 * indicates which of the set*uid system calls invoked this hook. If
725 * @new is the set of credentials that will be installed. Modifications
726 * should be made to this rather than to @current->cred.
727 * @old is the set of credentials that are being replaces
728 * @flags contains one of the LSM_SETID_* values.
729 * Return 0 on success.
731 * Check permission before setting one or more of the group identity
732 * attributes of the current process. The @flags parameter indicates
733 * which of the set*gid system calls invoked this hook and how to
734 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
735 * definitions at the beginning of this file for the @flags values and
737 * @id0 contains a gid.
738 * @id1 contains a gid.
739 * @id2 contains a gid.
740 * @flags contains one of the LSM_SETID_* values.
741 * Return 0 if permission is granted.
743 * Check permission before setting the process group identifier of the
744 * process @p to @pgid.
745 * @p contains the task_struct for process being modified.
746 * @pgid contains the new pgid.
747 * Return 0 if permission is granted.
749 * Check permission before getting the process group identifier of the
751 * @p contains the task_struct for the process.
752 * Return 0 if permission is granted.
754 * Check permission before getting the session identifier of the process
756 * @p contains the task_struct for the process.
757 * Return 0 if permission is granted.
759 * Retrieve the security identifier of the process @p.
760 * @p contains the task_struct for the process and place is into @secid.
761 * In case of failure, @secid will be set to zero.
764 * Check permission before setting the supplementary group set of the
766 * @group_info contains the new group information.
767 * Return 0 if permission is granted.
769 * Check permission before setting the nice value of @p to @nice.
770 * @p contains the task_struct of process.
771 * @nice contains the new nice value.
772 * Return 0 if permission is granted.
774 * Check permission before setting the ioprio value of @p to @ioprio.
775 * @p contains the task_struct of process.
776 * @ioprio contains the new ioprio value
777 * Return 0 if permission is granted.
779 * Check permission before getting the ioprio value of @p.
780 * @p contains the task_struct of process.
781 * Return 0 if permission is granted.
783 * Check permission before setting the resource limits of the current
784 * process for @resource to @new_rlim. The old resource limit values can
785 * be examined by dereferencing (current->signal->rlim + resource).
786 * @resource contains the resource whose limit is being set.
787 * @new_rlim contains the new limits for @resource.
788 * Return 0 if permission is granted.
789 * @task_setscheduler:
790 * Check permission before setting scheduling policy and/or parameters of
791 * process @p based on @policy and @lp.
792 * @p contains the task_struct for process.
793 * @policy contains the scheduling policy.
794 * @lp contains the scheduling parameters.
795 * Return 0 if permission is granted.
796 * @task_getscheduler:
797 * Check permission before obtaining scheduling information for process
799 * @p contains the task_struct for process.
800 * Return 0 if permission is granted.
802 * Check permission before moving memory owned by process @p.
803 * @p contains the task_struct for process.
804 * Return 0 if permission is granted.
806 * Check permission before sending signal @sig to @p. @info can be NULL,
807 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
808 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
809 * from the kernel and should typically be permitted.
810 * SIGIO signals are handled separately by the send_sigiotask hook in
812 * @p contains the task_struct for process.
813 * @info contains the signal information.
814 * @sig contains the signal value.
815 * @secid contains the sid of the process where the signal originated
816 * Return 0 if permission is granted.
818 * Check permission before allowing a process to reap a child process @p
819 * and collect its status information.
820 * @p contains the task_struct for process.
821 * Return 0 if permission is granted.
823 * Check permission before performing a process control operation on the
825 * @option contains the operation.
826 * @arg2 contains a argument.
827 * @arg3 contains a argument.
828 * @arg4 contains a argument.
829 * @arg5 contains a argument.
830 * Return -ENOSYS if no-one wanted to handle this op, any other value to
831 * cause prctl() to return immediately with that value.
833 * Set the security attributes for an inode based on an associated task's
834 * security attributes, e.g. for /proc/pid inodes.
835 * @p contains the task_struct for the task.
836 * @inode contains the inode structure for the inode.
838 * Security hooks for Netlink messaging.
841 * Save security information for a netlink message so that permission
842 * checking can be performed when the message is processed. The security
843 * information can be saved using the eff_cap field of the
844 * netlink_skb_parms structure. Also may be used to provide fine
845 * grained control over message transmission.
846 * @sk associated sock of task sending the message.,
847 * @skb contains the sk_buff structure for the netlink message.
848 * Return 0 if the information was successfully saved and message
849 * is allowed to be transmitted.
851 * Check permission before processing the received netlink message in
853 * @skb contains the sk_buff structure for the netlink message.
854 * @cap indicates the capability required
855 * Return 0 if permission is granted.
857 * Security hooks for Unix domain networking.
859 * @unix_stream_connect:
860 * Check permissions before establishing a Unix domain stream connection
861 * between @sock and @other.
862 * @sock contains the socket structure.
863 * @other contains the peer socket structure.
864 * Return 0 if permission is granted.
866 * Check permissions before connecting or sending datagrams from @sock to
868 * @sock contains the socket structure.
869 * @sock contains the peer socket structure.
870 * Return 0 if permission is granted.
872 * The @unix_stream_connect and @unix_may_send hooks were necessary because
873 * Linux provides an alternative to the conventional file name space for Unix
874 * domain sockets. Whereas binding and connecting to sockets in the file name
875 * space is mediated by the typical file permissions (and caught by the mknod
876 * and permission hooks in inode_security_ops), binding and connecting to
877 * sockets in the abstract name space is completely unmediated. Sufficient
878 * control of Unix domain sockets in the abstract name space isn't possible
879 * using only the socket layer hooks, since we need to know the actual target
880 * socket, which is not looked up until we are inside the af_unix code.
882 * Security hooks for socket operations.
885 * Check permissions prior to creating a new socket.
886 * @family contains the requested protocol family.
887 * @type contains the requested communications type.
888 * @protocol contains the requested protocol.
889 * @kern set to 1 if a kernel socket.
890 * Return 0 if permission is granted.
891 * @socket_post_create:
892 * This hook allows a module to update or allocate a per-socket security
893 * structure. Note that the security field was not added directly to the
894 * socket structure, but rather, the socket security information is stored
895 * in the associated inode. Typically, the inode alloc_security hook will
896 * allocate and and attach security information to
897 * sock->inode->i_security. This hook may be used to update the
898 * sock->inode->i_security field with additional information that wasn't
899 * available when the inode was allocated.
900 * @sock contains the newly created socket structure.
901 * @family contains the requested protocol family.
902 * @type contains the requested communications type.
903 * @protocol contains the requested protocol.
904 * @kern set to 1 if a kernel socket.
906 * Check permission before socket protocol layer bind operation is
907 * performed and the socket @sock is bound to the address specified in the
908 * @address parameter.
909 * @sock contains the socket structure.
910 * @address contains the address to bind to.
911 * @addrlen contains the length of address.
912 * Return 0 if permission is granted.
914 * Check permission before socket protocol layer connect operation
915 * attempts to connect socket @sock to a remote address, @address.
916 * @sock contains the socket structure.
917 * @address contains the address of remote endpoint.
918 * @addrlen contains the length of address.
919 * Return 0 if permission is granted.
921 * Check permission before socket protocol layer listen operation.
922 * @sock contains the socket structure.
923 * @backlog contains the maximum length for the pending connection queue.
924 * Return 0 if permission is granted.
926 * Check permission before accepting a new connection. Note that the new
927 * socket, @newsock, has been created and some information copied to it,
928 * but the accept operation has not actually been performed.
929 * @sock contains the listening socket structure.
930 * @newsock contains the newly created server socket for connection.
931 * Return 0 if permission is granted.
933 * Check permission before transmitting a message to another socket.
934 * @sock contains the socket structure.
935 * @msg contains the message to be transmitted.
936 * @size contains the size of message.
937 * Return 0 if permission is granted.
939 * Check permission before receiving a message from a socket.
940 * @sock contains the socket structure.
941 * @msg contains the message structure.
942 * @size contains the size of message structure.
943 * @flags contains the operational flags.
944 * Return 0 if permission is granted.
945 * @socket_getsockname:
946 * Check permission before the local address (name) of the socket object
947 * @sock is retrieved.
948 * @sock contains the socket structure.
949 * Return 0 if permission is granted.
950 * @socket_getpeername:
951 * Check permission before the remote address (name) of a socket object
952 * @sock is retrieved.
953 * @sock contains the socket structure.
954 * Return 0 if permission is granted.
955 * @socket_getsockopt:
956 * Check permissions before retrieving the options associated with socket
958 * @sock contains the socket structure.
959 * @level contains the protocol level to retrieve option from.
960 * @optname contains the name of option to retrieve.
961 * Return 0 if permission is granted.
962 * @socket_setsockopt:
963 * Check permissions before setting the options associated with socket
965 * @sock contains the socket structure.
966 * @level contains the protocol level to set options for.
967 * @optname contains the name of the option to set.
968 * Return 0 if permission is granted.
970 * Checks permission before all or part of a connection on the socket
971 * @sock is shut down.
972 * @sock contains the socket structure.
973 * @how contains the flag indicating how future sends and receives are handled.
974 * Return 0 if permission is granted.
975 * @socket_sock_rcv_skb:
976 * Check permissions on incoming network packets. This hook is distinct
977 * from Netfilter's IP input hooks since it is the first time that the
978 * incoming sk_buff @skb has been associated with a particular socket, @sk.
979 * Must not sleep inside this hook because some callers hold spinlocks.
980 * @sk contains the sock (not socket) associated with the incoming sk_buff.
981 * @skb contains the incoming network data.
982 * @socket_getpeersec_stream:
983 * This hook allows the security module to provide peer socket security
984 * state for unix or connected tcp sockets to userspace via getsockopt
985 * SO_GETPEERSEC. For tcp sockets this can be meaningful if the
986 * socket is associated with an ipsec SA.
987 * @sock is the local socket.
988 * @optval userspace memory where the security state is to be copied.
989 * @optlen userspace int where the module should copy the actual length
990 * of the security state.
991 * @len as input is the maximum length to copy to userspace provided
993 * Return 0 if all is well, otherwise, typical getsockopt return
995 * @socket_getpeersec_dgram:
996 * This hook allows the security module to provide peer socket security
997 * state for udp sockets on a per-packet basis to userspace via
998 * getsockopt SO_GETPEERSEC. The application must first have indicated
999 * the IP_PASSSEC option via getsockopt. It can then retrieve the
1000 * security state returned by this hook for a packet via the SCM_SECURITY
1001 * ancillary message type.
1002 * @skb is the skbuff for the packet being queried
1003 * @secdata is a pointer to a buffer in which to copy the security data
1004 * @seclen is the maximum length for @secdata
1005 * Return 0 on success, error on failure.
1006 * @sk_alloc_security:
1007 * Allocate and attach a security structure to the sk->sk_security field,
1008 * which is used to copy security attributes between local stream sockets.
1009 * @sk_free_security:
1010 * Deallocate security structure.
1011 * @sk_clone_security:
1012 * Clone/copy security structure.
1014 * Retrieve the LSM-specific secid for the sock to enable caching of network
1017 * Sets the socket's isec sid to the sock's sid.
1018 * @inet_conn_request:
1019 * Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
1021 * Sets the new child socket's sid to the openreq sid.
1022 * @inet_conn_established:
1023 * Sets the connection's peersid to the secmark on skb.
1024 * @req_classify_flow:
1025 * Sets the flow's sid to the openreq sid.
1027 * Check permissions prior to creating a new TUN device.
1028 * @tun_dev_post_create:
1029 * This hook allows a module to update or allocate a per-socket security
1031 * @sk contains the newly created sock structure.
1033 * Check permissions prior to attaching to a persistent TUN device. This
1034 * hook can also be used by the module to update any security state
1035 * associated with the TUN device's sock structure.
1036 * @sk contains the existing sock structure.
1038 * Security hooks for XFRM operations.
1040 * @xfrm_policy_alloc_security:
1041 * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
1042 * Database used by the XFRM system.
1043 * @sec_ctx contains the security context information being provided by
1044 * the user-level policy update program (e.g., setkey).
1045 * Allocate a security structure to the xp->security field; the security
1046 * field is initialized to NULL when the xfrm_policy is allocated.
1047 * Return 0 if operation was successful (memory to allocate, legal context)
1048 * @xfrm_policy_clone_security:
1049 * @old_ctx contains an existing xfrm_sec_ctx.
1050 * @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
1051 * Allocate a security structure in new_ctxp that contains the
1052 * information from the old_ctx structure.
1053 * Return 0 if operation was successful (memory to allocate).
1054 * @xfrm_policy_free_security:
1055 * @ctx contains the xfrm_sec_ctx
1056 * Deallocate xp->security.
1057 * @xfrm_policy_delete_security:
1058 * @ctx contains the xfrm_sec_ctx.
1059 * Authorize deletion of xp->security.
1060 * @xfrm_state_alloc_security:
1061 * @x contains the xfrm_state being added to the Security Association
1062 * Database by the XFRM system.
1063 * @sec_ctx contains the security context information being provided by
1064 * the user-level SA generation program (e.g., setkey or racoon).
1065 * @secid contains the secid from which to take the mls portion of the context.
1066 * Allocate a security structure to the x->security field; the security
1067 * field is initialized to NULL when the xfrm_state is allocated. Set the
1068 * context to correspond to either sec_ctx or polsec, with the mls portion
1069 * taken from secid in the latter case.
1070 * Return 0 if operation was successful (memory to allocate, legal context).
1071 * @xfrm_state_free_security:
1072 * @x contains the xfrm_state.
1073 * Deallocate x->security.
1074 * @xfrm_state_delete_security:
1075 * @x contains the xfrm_state.
1076 * Authorize deletion of x->security.
1077 * @xfrm_policy_lookup:
1078 * @ctx contains the xfrm_sec_ctx for which the access control is being
1080 * @fl_secid contains the flow security label that is used to authorize
1081 * access to the policy xp.
1082 * @dir contains the direction of the flow (input or output).
1083 * Check permission when a flow selects a xfrm_policy for processing
1084 * XFRMs on a packet. The hook is called when selecting either a
1085 * per-socket policy or a generic xfrm policy.
1086 * Return 0 if permission is granted, -ESRCH otherwise, or -errno
1088 * @xfrm_state_pol_flow_match:
1089 * @x contains the state to match.
1090 * @xp contains the policy to check for a match.
1091 * @fl contains the flow to check for a match.
1092 * Return 1 if there is a match.
1093 * @xfrm_decode_session:
1094 * @skb points to skb to decode.
1095 * @secid points to the flow key secid to set.
1096 * @ckall says if all xfrms used should be checked for same secid.
1097 * Return 0 if ckall is zero or all xfrms used have the same secid.
1099 * Security hooks affecting all Key Management operations
1102 * Permit allocation of a key and assign security data. Note that key does
1103 * not have a serial number assigned at this point.
1104 * @key points to the key.
1105 * @flags is the allocation flags
1106 * Return 0 if permission is granted, -ve error otherwise.
1108 * Notification of destruction; free security data.
1109 * @key points to the key.
1112 * See whether a specific operational right is granted to a process on a
1114 * @key_ref refers to the key (key pointer + possession attribute bit).
1115 * @cred points to the credentials to provide the context against which to
1116 * evaluate the security data on the key.
1117 * @perm describes the combination of permissions required of this key.
1118 * Return 1 if permission granted, 0 if permission denied and -ve it the
1119 * normal permissions model should be effected.
1121 * Get a textual representation of the security context attached to a key
1122 * for the purposes of honouring KEYCTL_GETSECURITY. This function
1123 * allocates the storage for the NUL-terminated string and the caller
1125 * @key points to the key to be queried.
1126 * @_buffer points to a pointer that should be set to point to the
1127 * resulting string (if no label or an error occurs).
1128 * Return the length of the string (including terminating NUL) or -ve if
1130 * May also return 0 (and a NULL buffer pointer) if there is no label.
1131 * @key_session_to_parent:
1132 * Forcibly assign the session keyring from a process to its parent
1134 * @cred: Pointer to process's credentials
1135 * @parent_cred: Pointer to parent process's credentials
1136 * @keyring: Proposed new session keyring
1137 * Return 0 if permission is granted, -ve error otherwise.
1139 * Security hooks affecting all System V IPC operations.
1142 * Check permissions for access to IPC
1143 * @ipcp contains the kernel IPC permission structure
1144 * @flag contains the desired (requested) permission set
1145 * Return 0 if permission is granted.
1147 * Get the secid associated with the ipc object.
1148 * @ipcp contains the kernel IPC permission structure.
1149 * @secid contains a pointer to the location where result will be saved.
1150 * In case of failure, @secid will be set to zero.
1152 * Security hooks for individual messages held in System V IPC message queues
1153 * @msg_msg_alloc_security:
1154 * Allocate and attach a security structure to the msg->security field.
1155 * The security field is initialized to NULL when the structure is first
1157 * @msg contains the message structure to be modified.
1158 * Return 0 if operation was successful and permission is granted.
1159 * @msg_msg_free_security:
1160 * Deallocate the security structure for this message.
1161 * @msg contains the message structure to be modified.
1163 * Security hooks for System V IPC Message Queues
1165 * @msg_queue_alloc_security:
1166 * Allocate and attach a security structure to the
1167 * msq->q_perm.security field. The security field is initialized to
1168 * NULL when the structure is first created.
1169 * @msq contains the message queue structure to be modified.
1170 * Return 0 if operation was successful and permission is granted.
1171 * @msg_queue_free_security:
1172 * Deallocate security structure for this message queue.
1173 * @msq contains the message queue structure to be modified.
1174 * @msg_queue_associate:
1175 * Check permission when a message queue is requested through the
1176 * msgget system call. This hook is only called when returning the
1177 * message queue identifier for an existing message queue, not when a
1178 * new message queue is created.
1179 * @msq contains the message queue to act upon.
1180 * @msqflg contains the operation control flags.
1181 * Return 0 if permission is granted.
1182 * @msg_queue_msgctl:
1183 * Check permission when a message control operation specified by @cmd
1184 * is to be performed on the message queue @msq.
1185 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
1186 * @msq contains the message queue to act upon. May be NULL.
1187 * @cmd contains the operation to be performed.
1188 * Return 0 if permission is granted.
1189 * @msg_queue_msgsnd:
1190 * Check permission before a message, @msg, is enqueued on the message
1192 * @msq contains the message queue to send message to.
1193 * @msg contains the message to be enqueued.
1194 * @msqflg contains operational flags.
1195 * Return 0 if permission is granted.
1196 * @msg_queue_msgrcv:
1197 * Check permission before a message, @msg, is removed from the message
1198 * queue, @msq. The @target task structure contains a pointer to the
1199 * process that will be receiving the message (not equal to the current
1200 * process when inline receives are being performed).
1201 * @msq contains the message queue to retrieve message from.
1202 * @msg contains the message destination.
1203 * @target contains the task structure for recipient process.
1204 * @type contains the type of message requested.
1205 * @mode contains the operational flags.
1206 * Return 0 if permission is granted.
1208 * Security hooks for System V Shared Memory Segments
1210 * @shm_alloc_security:
1211 * Allocate and attach a security structure to the shp->shm_perm.security
1212 * field. The security field is initialized to NULL when the structure is
1214 * @shp contains the shared memory structure to be modified.
1215 * Return 0 if operation was successful and permission is granted.
1216 * @shm_free_security:
1217 * Deallocate the security struct for this memory segment.
1218 * @shp contains the shared memory structure to be modified.
1220 * Check permission when a shared memory region is requested through the
1221 * shmget system call. This hook is only called when returning the shared
1222 * memory region identifier for an existing region, not when a new shared
1223 * memory region is created.
1224 * @shp contains the shared memory structure to be modified.
1225 * @shmflg contains the operation control flags.
1226 * Return 0 if permission is granted.
1228 * Check permission when a shared memory control operation specified by
1229 * @cmd is to be performed on the shared memory region @shp.
1230 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1231 * @shp contains shared memory structure to be modified.
1232 * @cmd contains the operation to be performed.
1233 * Return 0 if permission is granted.
1235 * Check permissions prior to allowing the shmat system call to attach the
1236 * shared memory segment @shp to the data segment of the calling process.
1237 * The attaching address is specified by @shmaddr.
1238 * @shp contains the shared memory structure to be modified.
1239 * @shmaddr contains the address to attach memory region to.
1240 * @shmflg contains the operational flags.
1241 * Return 0 if permission is granted.
1243 * Security hooks for System V Semaphores
1245 * @sem_alloc_security:
1246 * Allocate and attach a security structure to the sma->sem_perm.security
1247 * field. The security field is initialized to NULL when the structure is
1249 * @sma contains the semaphore structure
1250 * Return 0 if operation was successful and permission is granted.
1251 * @sem_free_security:
1252 * deallocate security struct for this semaphore
1253 * @sma contains the semaphore structure.
1255 * Check permission when a semaphore is requested through the semget
1256 * system call. This hook is only called when returning the semaphore
1257 * identifier for an existing semaphore, not when a new one must be
1259 * @sma contains the semaphore structure.
1260 * @semflg contains the operation control flags.
1261 * Return 0 if permission is granted.
1263 * Check permission when a semaphore operation specified by @cmd is to be
1264 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
1265 * IPC_INFO or SEM_INFO.
1266 * @sma contains the semaphore structure. May be NULL.
1267 * @cmd contains the operation to be performed.
1268 * Return 0 if permission is granted.
1270 * Check permissions before performing operations on members of the
1271 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1273 * @sma contains the semaphore structure.
1274 * @sops contains the operations to perform.
1275 * @nsops contains the number of operations to perform.
1276 * @alter contains the flag indicating whether changes are to be made.
1277 * Return 0 if permission is granted.
1279 * @ptrace_access_check:
1280 * Check permission before allowing the current process to trace the
1282 * Security modules may also want to perform a process tracing check
1283 * during an execve in the set_security or apply_creds hooks of
1284 * tracing check during an execve in the bprm_set_creds hook of
1285 * binprm_security_ops if the process is being traced and its security
1286 * attributes would be changed by the execve.
1287 * @child contains the task_struct structure for the target process.
1288 * @mode contains the PTRACE_MODE flags indicating the form of access.
1289 * Return 0 if permission is granted.
1291 * Check that the @parent process has sufficient permission to trace the
1292 * current process before allowing the current process to present itself
1293 * to the @parent process for tracing.
1294 * The parent process will still have to undergo the ptrace_access_check
1295 * checks before it is allowed to trace this one.
1296 * @parent contains the task_struct structure for debugger process.
1297 * Return 0 if permission is granted.
1299 * Get the @effective, @inheritable, and @permitted capability sets for
1300 * the @target process. The hook may also perform permission checking to
1301 * determine if the current process is allowed to see the capability sets
1302 * of the @target process.
1303 * @target contains the task_struct structure for target process.
1304 * @effective contains the effective capability set.
1305 * @inheritable contains the inheritable capability set.
1306 * @permitted contains the permitted capability set.
1307 * Return 0 if the capability sets were successfully obtained.
1309 * Set the @effective, @inheritable, and @permitted capability sets for
1310 * the current process.
1311 * @new contains the new credentials structure for target process.
1312 * @old contains the current credentials structure for target process.
1313 * @effective contains the effective capability set.
1314 * @inheritable contains the inheritable capability set.
1315 * @permitted contains the permitted capability set.
1316 * Return 0 and update @new if permission is granted.
1318 * Check whether the @tsk process has the @cap capability in the indicated
1320 * @tsk contains the task_struct for the process.
1321 * @cred contains the credentials to use.
1322 * @cap contains the capability <include/linux/capability.h>.
1323 * @audit: Whether to write an audit message or not
1324 * Return 0 if the capability is granted for @tsk.
1326 * Check permission before enabling or disabling process accounting. If
1327 * accounting is being enabled, then @file refers to the open file used to
1328 * store accounting records. If accounting is being disabled, then @file
1330 * @file contains the file structure for the accounting file (may be NULL).
1331 * Return 0 if permission is granted.
1333 * Check permission before accessing the @table sysctl variable in the
1334 * manner specified by @op.
1335 * @table contains the ctl_table structure for the sysctl variable.
1336 * @op contains the operation (001 = search, 002 = write, 004 = read).
1337 * Return 0 if permission is granted.
1339 * Check permission before accessing the kernel message ring or changing
1340 * logging to the console.
1341 * See the syslog(2) manual page for an explanation of the @type values.
1342 * @type contains the type of action.
1343 * @from_file indicates the context of action (if it came from /proc).
1344 * Return 0 if permission is granted.
1346 * Check permission to change the system time.
1347 * struct timespec and timezone are defined in include/linux/time.h
1348 * @ts contains new time
1349 * @tz contains new timezone
1350 * Return 0 if permission is granted.
1351 * @vm_enough_memory:
1352 * Check permissions for allocating a new virtual mapping.
1353 * @mm contains the mm struct it is being added to.
1354 * @pages contains the number of pages.
1355 * Return 0 if permission is granted.
1358 * Convert secid to security context.
1359 * @secid contains the security ID.
1360 * @secdata contains the pointer that stores the converted security context.
1362 * Convert security context to secid.
1363 * @secid contains the pointer to the generated security ID.
1364 * @secdata contains the security context.
1367 * Release the security context.
1368 * @secdata contains the security context.
1369 * @seclen contains the length of the security context.
1371 * Security hooks for Audit
1374 * Allocate and initialize an LSM audit rule structure.
1375 * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
1376 * @op contains the operator the rule uses.
1377 * @rulestr contains the context where the rule will be applied to.
1378 * @lsmrule contains a pointer to receive the result.
1379 * Return 0 if @lsmrule has been successfully set,
1380 * -EINVAL in case of an invalid rule.
1382 * @audit_rule_known:
1383 * Specifies whether given @rule contains any fields related to current LSM.
1384 * @rule contains the audit rule of interest.
1385 * Return 1 in case of relation found, 0 otherwise.
1387 * @audit_rule_match:
1388 * Determine if given @secid matches a rule previously approved
1389 * by @audit_rule_known.
1390 * @secid contains the security id in question.
1391 * @field contains the field which relates to current LSM.
1392 * @op contains the operator that will be used for matching.
1393 * @rule points to the audit rule that will be checked against.
1394 * @actx points to the audit context associated with the check.
1395 * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
1398 * Deallocate the LSM audit rule structure previously allocated by
1400 * @rule contains the allocated rule
1402 * @inode_notifysecctx:
1403 * Notify the security module of what the security context of an inode
1404 * should be. Initializes the incore security context managed by the
1405 * security module for this inode. Example usage: NFS client invokes
1406 * this hook to initialize the security context in its incore inode to the
1407 * value provided by the server for the file when the server returned the
1408 * file's attributes to the client.
1410 * Must be called with inode->i_mutex locked.
1412 * @inode we wish to set the security context of.
1413 * @ctx contains the string which we wish to set in the inode.
1414 * @ctxlen contains the length of @ctx.
1417 * Change the security context of an inode. Updates the
1418 * incore security context managed by the security module and invokes the
1419 * fs code as needed (via __vfs_setxattr_noperm) to update any backing
1420 * xattrs that represent the context. Example usage: NFS server invokes
1421 * this hook to change the security context in its incore inode and on the
1422 * backing filesystem to a value provided by the client on a SETATTR
1425 * Must be called with inode->i_mutex locked.
1427 * @dentry contains the inode we wish to set the security context of.
1428 * @ctx contains the string which we wish to set in the inode.
1429 * @ctxlen contains the length of @ctx.
1432 * Returns a string containing all relavent security context information
1434 * @inode we wish to set the security context of.
1435 * @ctx is a pointer in which to place the allocated security context.
1436 * @ctxlen points to the place to put the length of @ctx.
1437 * This is the main security structure.
1439 struct security_operations {
1440 char name[SECURITY_NAME_MAX + 1];
1442 int (*ptrace_access_check) (struct task_struct *child, unsigned int mode);
1443 int (*ptrace_traceme) (struct task_struct *parent);
1444 int (*capget) (struct task_struct *target,
1445 kernel_cap_t *effective,
1446 kernel_cap_t *inheritable, kernel_cap_t *permitted);
1447 int (*capset) (struct cred *new,
1448 const struct cred *old,
1449 const kernel_cap_t *effective,
1450 const kernel_cap_t *inheritable,
1451 const kernel_cap_t *permitted);
1452 int (*capable) (struct task_struct *tsk, const struct cred *cred,
1453 int cap, int audit);
1454 int (*acct) (struct file *file);
1455 int (*sysctl) (struct ctl_table *table, int op);
1456 int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
1457 int (*quota_on) (struct dentry *dentry);
1458 int (*syslog) (int type, bool from_file);
1459 int (*settime) (struct timespec *ts, struct timezone *tz);
1460 int (*vm_enough_memory) (struct mm_struct *mm, long pages);
1462 int (*bprm_set_creds) (struct linux_binprm *bprm);
1463 int (*bprm_check_security) (struct linux_binprm *bprm);
1464 int (*bprm_secureexec) (struct linux_binprm *bprm);
1465 void (*bprm_committing_creds) (struct linux_binprm *bprm);
1466 void (*bprm_committed_creds) (struct linux_binprm *bprm);
1468 int (*sb_alloc_security) (struct super_block *sb);
1469 void (*sb_free_security) (struct super_block *sb);
1470 int (*sb_copy_data) (char *orig, char *copy);
1471 int (*sb_kern_mount) (struct super_block *sb, int flags, void *data);
1472 int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
1473 int (*sb_statfs) (struct dentry *dentry);
1474 int (*sb_mount) (char *dev_name, struct path *path,
1475 char *type, unsigned long flags, void *data);
1476 int (*sb_umount) (struct vfsmount *mnt, int flags);
1477 void (*sb_umount_busy) (struct vfsmount *mnt);
1478 void (*sb_post_remount) (struct vfsmount *mnt,
1479 unsigned long flags, void *data);
1480 void (*sb_post_addmount) (struct vfsmount *mnt,
1481 struct path *mountpoint);
1482 int (*sb_pivotroot) (struct path *old_path,
1483 struct path *new_path);
1484 void (*sb_post_pivotroot) (struct path *old_path,
1485 struct path *new_path);
1486 int (*sb_set_mnt_opts) (struct super_block *sb,
1487 struct security_mnt_opts *opts);
1488 void (*sb_clone_mnt_opts) (const struct super_block *oldsb,
1489 struct super_block *newsb);
1490 int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
1492 #ifdef CONFIG_SECURITY_PATH
1493 int (*path_unlink) (struct path *dir, struct dentry *dentry);
1494 int (*path_mkdir) (struct path *dir, struct dentry *dentry, int mode);
1495 int (*path_rmdir) (struct path *dir, struct dentry *dentry);
1496 int (*path_mknod) (struct path *dir, struct dentry *dentry, int mode,
1498 int (*path_truncate) (struct path *path, loff_t length,
1499 unsigned int time_attrs);
1500 int (*path_symlink) (struct path *dir, struct dentry *dentry,
1501 const char *old_name);
1502 int (*path_link) (struct dentry *old_dentry, struct path *new_dir,
1503 struct dentry *new_dentry);
1504 int (*path_rename) (struct path *old_dir, struct dentry *old_dentry,
1505 struct path *new_dir, struct dentry *new_dentry);
1506 int (*path_chmod) (struct dentry *dentry, struct vfsmount *mnt,
1508 int (*path_chown) (struct path *path, uid_t uid, gid_t gid);
1509 int (*path_chroot) (struct path *path);
1512 int (*inode_alloc_security) (struct inode *inode);
1513 void (*inode_free_security) (struct inode *inode);
1514 int (*inode_init_security) (struct inode *inode, struct inode *dir,
1515 char **name, void **value, size_t *len);
1516 int (*inode_create) (struct inode *dir,
1517 struct dentry *dentry, int mode);
1518 int (*inode_link) (struct dentry *old_dentry,
1519 struct inode *dir, struct dentry *new_dentry);
1520 int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
1521 int (*inode_symlink) (struct inode *dir,
1522 struct dentry *dentry, const char *old_name);
1523 int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, int mode);
1524 int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
1525 int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
1526 int mode, dev_t dev);
1527 int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
1528 struct inode *new_dir, struct dentry *new_dentry);
1529 int (*inode_readlink) (struct dentry *dentry);
1530 int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
1531 int (*inode_permission) (struct inode *inode, int mask);
1532 int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
1533 int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
1534 void (*inode_delete) (struct inode *inode);
1535 int (*inode_setxattr) (struct dentry *dentry, const char *name,
1536 const void *value, size_t size, int flags);
1537 void (*inode_post_setxattr) (struct dentry *dentry, const char *name,
1538 const void *value, size_t size, int flags);
1539 int (*inode_getxattr) (struct dentry *dentry, const char *name);
1540 int (*inode_listxattr) (struct dentry *dentry);
1541 int (*inode_removexattr) (struct dentry *dentry, const char *name);
1542 int (*inode_need_killpriv) (struct dentry *dentry);
1543 int (*inode_killpriv) (struct dentry *dentry);
1544 int (*inode_getsecurity) (const struct inode *inode, const char *name, void **buffer, bool alloc);
1545 int (*inode_setsecurity) (struct inode *inode, const char *name, const void *value, size_t size, int flags);
1546 int (*inode_listsecurity) (struct inode *inode, char *buffer, size_t buffer_size);
1547 void (*inode_getsecid) (const struct inode *inode, u32 *secid);
1549 int (*file_permission) (struct file *file, int mask);
1550 int (*file_alloc_security) (struct file *file);
1551 void (*file_free_security) (struct file *file);
1552 int (*file_ioctl) (struct file *file, unsigned int cmd,
1554 int (*file_mmap) (struct file *file,
1555 unsigned long reqprot, unsigned long prot,
1556 unsigned long flags, unsigned long addr,
1557 unsigned long addr_only);
1558 int (*file_mprotect) (struct vm_area_struct *vma,
1559 unsigned long reqprot,
1560 unsigned long prot);
1561 int (*file_lock) (struct file *file, unsigned int cmd);
1562 int (*file_fcntl) (struct file *file, unsigned int cmd,
1564 int (*file_set_fowner) (struct file *file);
1565 int (*file_send_sigiotask) (struct task_struct *tsk,
1566 struct fown_struct *fown, int sig);
1567 int (*file_receive) (struct file *file);
1568 int (*dentry_open) (struct file *file, const struct cred *cred);
1570 int (*task_create) (unsigned long clone_flags);
1571 int (*cred_alloc_blank) (struct cred *cred, gfp_t gfp);
1572 void (*cred_free) (struct cred *cred);
1573 int (*cred_prepare)(struct cred *new, const struct cred *old,
1575 void (*cred_commit)(struct cred *new, const struct cred *old);
1576 void (*cred_transfer)(struct cred *new, const struct cred *old);
1577 int (*kernel_act_as)(struct cred *new, u32 secid);
1578 int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
1579 int (*kernel_module_request)(char *kmod_name);
1580 int (*task_setuid) (uid_t id0, uid_t id1, uid_t id2, int flags);
1581 int (*task_fix_setuid) (struct cred *new, const struct cred *old,
1583 int (*task_setgid) (gid_t id0, gid_t id1, gid_t id2, int flags);
1584 int (*task_setpgid) (struct task_struct *p, pid_t pgid);
1585 int (*task_getpgid) (struct task_struct *p);
1586 int (*task_getsid) (struct task_struct *p);
1587 void (*task_getsecid) (struct task_struct *p, u32 *secid);
1588 int (*task_setgroups) (struct group_info *group_info);
1589 int (*task_setnice) (struct task_struct *p, int nice);
1590 int (*task_setioprio) (struct task_struct *p, int ioprio);
1591 int (*task_getioprio) (struct task_struct *p);
1592 int (*task_setrlimit) (unsigned int resource, struct rlimit *new_rlim);
1593 int (*task_setscheduler) (struct task_struct *p, int policy,
1594 struct sched_param *lp);
1595 int (*task_getscheduler) (struct task_struct *p);
1596 int (*task_movememory) (struct task_struct *p);
1597 int (*task_kill) (struct task_struct *p,
1598 struct siginfo *info, int sig, u32 secid);
1599 int (*task_wait) (struct task_struct *p);
1600 int (*task_prctl) (int option, unsigned long arg2,
1601 unsigned long arg3, unsigned long arg4,
1602 unsigned long arg5);
1603 void (*task_to_inode) (struct task_struct *p, struct inode *inode);
1605 int (*ipc_permission) (struct kern_ipc_perm *ipcp, short flag);
1606 void (*ipc_getsecid) (struct kern_ipc_perm *ipcp, u32 *secid);
1608 int (*msg_msg_alloc_security) (struct msg_msg *msg);
1609 void (*msg_msg_free_security) (struct msg_msg *msg);
1611 int (*msg_queue_alloc_security) (struct msg_queue *msq);
1612 void (*msg_queue_free_security) (struct msg_queue *msq);
1613 int (*msg_queue_associate) (struct msg_queue *msq, int msqflg);
1614 int (*msg_queue_msgctl) (struct msg_queue *msq, int cmd);
1615 int (*msg_queue_msgsnd) (struct msg_queue *msq,
1616 struct msg_msg *msg, int msqflg);
1617 int (*msg_queue_msgrcv) (struct msg_queue *msq,
1618 struct msg_msg *msg,
1619 struct task_struct *target,
1620 long type, int mode);
1622 int (*shm_alloc_security) (struct shmid_kernel *shp);
1623 void (*shm_free_security) (struct shmid_kernel *shp);
1624 int (*shm_associate) (struct shmid_kernel *shp, int shmflg);
1625 int (*shm_shmctl) (struct shmid_kernel *shp, int cmd);
1626 int (*shm_shmat) (struct shmid_kernel *shp,
1627 char __user *shmaddr, int shmflg);
1629 int (*sem_alloc_security) (struct sem_array *sma);
1630 void (*sem_free_security) (struct sem_array *sma);
1631 int (*sem_associate) (struct sem_array *sma, int semflg);
1632 int (*sem_semctl) (struct sem_array *sma, int cmd);
1633 int (*sem_semop) (struct sem_array *sma,
1634 struct sembuf *sops, unsigned nsops, int alter);
1636 int (*netlink_send) (struct sock *sk, struct sk_buff *skb);
1637 int (*netlink_recv) (struct sk_buff *skb, int cap);
1639 void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1641 int (*getprocattr) (struct task_struct *p, char *name, char **value);
1642 int (*setprocattr) (struct task_struct *p, char *name, void *value, size_t size);
1643 int (*secid_to_secctx) (u32 secid, char **secdata, u32 *seclen);
1644 int (*secctx_to_secid) (const char *secdata, u32 seclen, u32 *secid);
1645 void (*release_secctx) (char *secdata, u32 seclen);
1647 int (*inode_notifysecctx)(struct inode *inode, void *ctx, u32 ctxlen);
1648 int (*inode_setsecctx)(struct dentry *dentry, void *ctx, u32 ctxlen);
1649 int (*inode_getsecctx)(struct inode *inode, void **ctx, u32 *ctxlen);
1651 #ifdef CONFIG_SECURITY_NETWORK
1652 int (*unix_stream_connect) (struct socket *sock,
1653 struct socket *other, struct sock *newsk);
1654 int (*unix_may_send) (struct socket *sock, struct socket *other);
1656 int (*socket_create) (int family, int type, int protocol, int kern);
1657 int (*socket_post_create) (struct socket *sock, int family,
1658 int type, int protocol, int kern);
1659 int (*socket_bind) (struct socket *sock,
1660 struct sockaddr *address, int addrlen);
1661 int (*socket_connect) (struct socket *sock,
1662 struct sockaddr *address, int addrlen);
1663 int (*socket_listen) (struct socket *sock, int backlog);
1664 int (*socket_accept) (struct socket *sock, struct socket *newsock);
1665 int (*socket_sendmsg) (struct socket *sock,
1666 struct msghdr *msg, int size);
1667 int (*socket_recvmsg) (struct socket *sock,
1668 struct msghdr *msg, int size, int flags);
1669 int (*socket_getsockname) (struct socket *sock);
1670 int (*socket_getpeername) (struct socket *sock);
1671 int (*socket_getsockopt) (struct socket *sock, int level, int optname);
1672 int (*socket_setsockopt) (struct socket *sock, int level, int optname);
1673 int (*socket_shutdown) (struct socket *sock, int how);
1674 int (*socket_sock_rcv_skb) (struct sock *sk, struct sk_buff *skb);
1675 int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
1676 int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
1677 int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
1678 void (*sk_free_security) (struct sock *sk);
1679 void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
1680 void (*sk_getsecid) (struct sock *sk, u32 *secid);
1681 void (*sock_graft) (struct sock *sk, struct socket *parent);
1682 int (*inet_conn_request) (struct sock *sk, struct sk_buff *skb,
1683 struct request_sock *req);
1684 void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req);
1685 void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb);
1686 void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
1687 int (*tun_dev_create)(void);
1688 void (*tun_dev_post_create)(struct sock *sk);
1689 int (*tun_dev_attach)(struct sock *sk);
1690 #endif /* CONFIG_SECURITY_NETWORK */
1692 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1693 int (*xfrm_policy_alloc_security) (struct xfrm_sec_ctx **ctxp,
1694 struct xfrm_user_sec_ctx *sec_ctx);
1695 int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
1696 void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
1697 int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
1698 int (*xfrm_state_alloc_security) (struct xfrm_state *x,
1699 struct xfrm_user_sec_ctx *sec_ctx,
1701 void (*xfrm_state_free_security) (struct xfrm_state *x);
1702 int (*xfrm_state_delete_security) (struct xfrm_state *x);
1703 int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1704 int (*xfrm_state_pol_flow_match) (struct xfrm_state *x,
1705 struct xfrm_policy *xp,
1707 int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall);
1708 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1710 /* key management security hooks */
1712 int (*key_alloc) (struct key *key, const struct cred *cred, unsigned long flags);
1713 void (*key_free) (struct key *key);
1714 int (*key_permission) (key_ref_t key_ref,
1715 const struct cred *cred,
1717 int (*key_getsecurity)(struct key *key, char **_buffer);
1718 int (*key_session_to_parent)(const struct cred *cred,
1719 const struct cred *parent_cred,
1721 #endif /* CONFIG_KEYS */
1724 int (*audit_rule_init) (u32 field, u32 op, char *rulestr, void **lsmrule);
1725 int (*audit_rule_known) (struct audit_krule *krule);
1726 int (*audit_rule_match) (u32 secid, u32 field, u32 op, void *lsmrule,
1727 struct audit_context *actx);
1728 void (*audit_rule_free) (void *lsmrule);
1729 #endif /* CONFIG_AUDIT */
1733 extern int security_init(void);
1734 extern int security_module_enable(struct security_operations *ops);
1735 extern int register_security(struct security_operations *ops);
1737 /* Security operations */
1738 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
1739 int security_ptrace_traceme(struct task_struct *parent);
1740 int security_capget(struct task_struct *target,
1741 kernel_cap_t *effective,
1742 kernel_cap_t *inheritable,
1743 kernel_cap_t *permitted);
1744 int security_capset(struct cred *new, const struct cred *old,
1745 const kernel_cap_t *effective,
1746 const kernel_cap_t *inheritable,
1747 const kernel_cap_t *permitted);
1748 int security_capable(int cap);
1749 int security_real_capable(struct task_struct *tsk, int cap);
1750 int security_real_capable_noaudit(struct task_struct *tsk, int cap);
1751 int security_acct(struct file *file);
1752 int security_sysctl(struct ctl_table *table, int op);
1753 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
1754 int security_quota_on(struct dentry *dentry);
1755 int security_syslog(int type, bool from_file);
1756 int security_settime(struct timespec *ts, struct timezone *tz);
1757 int security_vm_enough_memory(long pages);
1758 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
1759 int security_vm_enough_memory_kern(long pages);
1760 int security_bprm_set_creds(struct linux_binprm *bprm);
1761 int security_bprm_check(struct linux_binprm *bprm);
1762 void security_bprm_committing_creds(struct linux_binprm *bprm);
1763 void security_bprm_committed_creds(struct linux_binprm *bprm);
1764 int security_bprm_secureexec(struct linux_binprm *bprm);
1765 int security_sb_alloc(struct super_block *sb);
1766 void security_sb_free(struct super_block *sb);
1767 int security_sb_copy_data(char *orig, char *copy);
1768 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
1769 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
1770 int security_sb_statfs(struct dentry *dentry);
1771 int security_sb_mount(char *dev_name, struct path *path,
1772 char *type, unsigned long flags, void *data);
1773 int security_sb_umount(struct vfsmount *mnt, int flags);
1774 void security_sb_umount_busy(struct vfsmount *mnt);
1775 void security_sb_post_remount(struct vfsmount *mnt, unsigned long flags, void *data);
1776 void security_sb_post_addmount(struct vfsmount *mnt, struct path *mountpoint);
1777 int security_sb_pivotroot(struct path *old_path, struct path *new_path);
1778 void security_sb_post_pivotroot(struct path *old_path, struct path *new_path);
1779 int security_sb_set_mnt_opts(struct super_block *sb, struct security_mnt_opts *opts);
1780 void security_sb_clone_mnt_opts(const struct super_block *oldsb,
1781 struct super_block *newsb);
1782 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
1784 int security_inode_alloc(struct inode *inode);
1785 void security_inode_free(struct inode *inode);
1786 int security_inode_init_security(struct inode *inode, struct inode *dir,
1787 char **name, void **value, size_t *len);
1788 int security_inode_create(struct inode *dir, struct dentry *dentry, int mode);
1789 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1790 struct dentry *new_dentry);
1791 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
1792 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
1793 const char *old_name);
1794 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode);
1795 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
1796 int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev);
1797 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
1798 struct inode *new_dir, struct dentry *new_dentry);
1799 int security_inode_readlink(struct dentry *dentry);
1800 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
1801 int security_inode_permission(struct inode *inode, int mask);
1802 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
1803 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
1804 void security_inode_delete(struct inode *inode);
1805 int security_inode_setxattr(struct dentry *dentry, const char *name,
1806 const void *value, size_t size, int flags);
1807 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1808 const void *value, size_t size, int flags);
1809 int security_inode_getxattr(struct dentry *dentry, const char *name);
1810 int security_inode_listxattr(struct dentry *dentry);
1811 int security_inode_removexattr(struct dentry *dentry, const char *name);
1812 int security_inode_need_killpriv(struct dentry *dentry);
1813 int security_inode_killpriv(struct dentry *dentry);
1814 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
1815 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1816 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
1817 void security_inode_getsecid(const struct inode *inode, u32 *secid);
1818 int security_file_permission(struct file *file, int mask);
1819 int security_file_alloc(struct file *file);
1820 void security_file_free(struct file *file);
1821 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
1822 int security_file_mmap(struct file *file, unsigned long reqprot,
1823 unsigned long prot, unsigned long flags,
1824 unsigned long addr, unsigned long addr_only);
1825 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1826 unsigned long prot);
1827 int security_file_lock(struct file *file, unsigned int cmd);
1828 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
1829 int security_file_set_fowner(struct file *file);
1830 int security_file_send_sigiotask(struct task_struct *tsk,
1831 struct fown_struct *fown, int sig);
1832 int security_file_receive(struct file *file);
1833 int security_dentry_open(struct file *file, const struct cred *cred);
1834 int security_task_create(unsigned long clone_flags);
1835 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
1836 void security_cred_free(struct cred *cred);
1837 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
1838 void security_commit_creds(struct cred *new, const struct cred *old);
1839 void security_transfer_creds(struct cred *new, const struct cred *old);
1840 int security_kernel_act_as(struct cred *new, u32 secid);
1841 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
1842 int security_kernel_module_request(char *kmod_name);
1843 int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags);
1844 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1846 int security_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags);
1847 int security_task_setpgid(struct task_struct *p, pid_t pgid);
1848 int security_task_getpgid(struct task_struct *p);
1849 int security_task_getsid(struct task_struct *p);
1850 void security_task_getsecid(struct task_struct *p, u32 *secid);
1851 int security_task_setgroups(struct group_info *group_info);
1852 int security_task_setnice(struct task_struct *p, int nice);
1853 int security_task_setioprio(struct task_struct *p, int ioprio);
1854 int security_task_getioprio(struct task_struct *p);
1855 int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim);
1856 int security_task_setscheduler(struct task_struct *p,
1857 int policy, struct sched_param *lp);
1858 int security_task_getscheduler(struct task_struct *p);
1859 int security_task_movememory(struct task_struct *p);
1860 int security_task_kill(struct task_struct *p, struct siginfo *info,
1861 int sig, u32 secid);
1862 int security_task_wait(struct task_struct *p);
1863 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1864 unsigned long arg4, unsigned long arg5);
1865 void security_task_to_inode(struct task_struct *p, struct inode *inode);
1866 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
1867 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
1868 int security_msg_msg_alloc(struct msg_msg *msg);
1869 void security_msg_msg_free(struct msg_msg *msg);
1870 int security_msg_queue_alloc(struct msg_queue *msq);
1871 void security_msg_queue_free(struct msg_queue *msq);
1872 int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
1873 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
1874 int security_msg_queue_msgsnd(struct msg_queue *msq,
1875 struct msg_msg *msg, int msqflg);
1876 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1877 struct task_struct *target, long type, int mode);
1878 int security_shm_alloc(struct shmid_kernel *shp);
1879 void security_shm_free(struct shmid_kernel *shp);
1880 int security_shm_associate(struct shmid_kernel *shp, int shmflg);
1881 int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
1882 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
1883 int security_sem_alloc(struct sem_array *sma);
1884 void security_sem_free(struct sem_array *sma);
1885 int security_sem_associate(struct sem_array *sma, int semflg);
1886 int security_sem_semctl(struct sem_array *sma, int cmd);
1887 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1888 unsigned nsops, int alter);
1889 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
1890 int security_getprocattr(struct task_struct *p, char *name, char **value);
1891 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
1892 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
1893 int security_netlink_recv(struct sk_buff *skb, int cap);
1894 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
1895 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
1896 void security_release_secctx(char *secdata, u32 seclen);
1898 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
1899 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
1900 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
1901 #else /* CONFIG_SECURITY */
1902 struct security_mnt_opts {
1905 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
1909 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
1914 * This is the default capabilities functionality. Most of these functions
1915 * are just stubbed out, but a few must call the proper capable code.
1918 static inline int security_init(void)
1923 static inline int security_ptrace_access_check(struct task_struct *child,
1926 return cap_ptrace_access_check(child, mode);
1929 static inline int security_ptrace_traceme(struct task_struct *parent)
1931 return cap_ptrace_traceme(parent);
1934 static inline int security_capget(struct task_struct *target,
1935 kernel_cap_t *effective,
1936 kernel_cap_t *inheritable,
1937 kernel_cap_t *permitted)
1939 return cap_capget(target, effective, inheritable, permitted);
1942 static inline int security_capset(struct cred *new,
1943 const struct cred *old,
1944 const kernel_cap_t *effective,
1945 const kernel_cap_t *inheritable,
1946 const kernel_cap_t *permitted)
1948 return cap_capset(new, old, effective, inheritable, permitted);
1951 static inline int security_capable(int cap)
1953 return cap_capable(current, current_cred(), cap, SECURITY_CAP_AUDIT);
1956 static inline int security_real_capable(struct task_struct *tsk, int cap)
1961 ret = cap_capable(tsk, __task_cred(tsk), cap, SECURITY_CAP_AUDIT);
1967 int security_real_capable_noaudit(struct task_struct *tsk, int cap)
1972 ret = cap_capable(tsk, __task_cred(tsk), cap,
1973 SECURITY_CAP_NOAUDIT);
1978 static inline int security_acct(struct file *file)
1983 static inline int security_sysctl(struct ctl_table *table, int op)
1988 static inline int security_quotactl(int cmds, int type, int id,
1989 struct super_block *sb)
1994 static inline int security_quota_on(struct dentry *dentry)
1999 static inline int security_syslog(int type, bool from_file)
2001 return cap_syslog(type, from_file);
2004 static inline int security_settime(struct timespec *ts, struct timezone *tz)
2006 return cap_settime(ts, tz);
2009 static inline int security_vm_enough_memory(long pages)
2011 WARN_ON(current->mm == NULL);
2012 return cap_vm_enough_memory(current->mm, pages);
2015 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
2017 WARN_ON(mm == NULL);
2018 return cap_vm_enough_memory(mm, pages);
2021 static inline int security_vm_enough_memory_kern(long pages)
2023 /* If current->mm is a kernel thread then we will pass NULL,
2024 for this specific case that is fine */
2025 return cap_vm_enough_memory(current->mm, pages);
2028 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
2030 return cap_bprm_set_creds(bprm);
2033 static inline int security_bprm_check(struct linux_binprm *bprm)
2038 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
2042 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
2046 static inline int security_bprm_secureexec(struct linux_binprm *bprm)
2048 return cap_bprm_secureexec(bprm);
2051 static inline int security_sb_alloc(struct super_block *sb)
2056 static inline void security_sb_free(struct super_block *sb)
2059 static inline int security_sb_copy_data(char *orig, char *copy)
2064 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
2069 static inline int security_sb_show_options(struct seq_file *m,
2070 struct super_block *sb)
2075 static inline int security_sb_statfs(struct dentry *dentry)
2080 static inline int security_sb_mount(char *dev_name, struct path *path,
2081 char *type, unsigned long flags,
2087 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
2092 static inline void security_sb_umount_busy(struct vfsmount *mnt)
2095 static inline void security_sb_post_remount(struct vfsmount *mnt,
2096 unsigned long flags, void *data)
2099 static inline void security_sb_post_addmount(struct vfsmount *mnt,
2100 struct path *mountpoint)
2103 static inline int security_sb_pivotroot(struct path *old_path,
2104 struct path *new_path)
2109 static inline void security_sb_post_pivotroot(struct path *old_path,
2110 struct path *new_path)
2113 static inline int security_sb_set_mnt_opts(struct super_block *sb,
2114 struct security_mnt_opts *opts)
2119 static inline void security_sb_clone_mnt_opts(const struct super_block *oldsb,
2120 struct super_block *newsb)
2123 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
2128 static inline int security_inode_alloc(struct inode *inode)
2133 static inline void security_inode_free(struct inode *inode)
2136 static inline int security_inode_init_security(struct inode *inode,
2145 static inline int security_inode_create(struct inode *dir,
2146 struct dentry *dentry,
2152 static inline int security_inode_link(struct dentry *old_dentry,
2154 struct dentry *new_dentry)
2159 static inline int security_inode_unlink(struct inode *dir,
2160 struct dentry *dentry)
2165 static inline int security_inode_symlink(struct inode *dir,
2166 struct dentry *dentry,
2167 const char *old_name)
2172 static inline int security_inode_mkdir(struct inode *dir,
2173 struct dentry *dentry,
2179 static inline int security_inode_rmdir(struct inode *dir,
2180 struct dentry *dentry)
2185 static inline int security_inode_mknod(struct inode *dir,
2186 struct dentry *dentry,
2187 int mode, dev_t dev)
2192 static inline int security_inode_rename(struct inode *old_dir,
2193 struct dentry *old_dentry,
2194 struct inode *new_dir,
2195 struct dentry *new_dentry)
2200 static inline int security_inode_readlink(struct dentry *dentry)
2205 static inline int security_inode_follow_link(struct dentry *dentry,
2206 struct nameidata *nd)
2211 static inline int security_inode_permission(struct inode *inode, int mask)
2216 static inline int security_inode_setattr(struct dentry *dentry,
2222 static inline int security_inode_getattr(struct vfsmount *mnt,
2223 struct dentry *dentry)
2228 static inline void security_inode_delete(struct inode *inode)
2231 static inline int security_inode_setxattr(struct dentry *dentry,
2232 const char *name, const void *value, size_t size, int flags)
2234 return cap_inode_setxattr(dentry, name, value, size, flags);
2237 static inline void security_inode_post_setxattr(struct dentry *dentry,
2238 const char *name, const void *value, size_t size, int flags)
2241 static inline int security_inode_getxattr(struct dentry *dentry,
2247 static inline int security_inode_listxattr(struct dentry *dentry)
2252 static inline int security_inode_removexattr(struct dentry *dentry,
2255 return cap_inode_removexattr(dentry, name);
2258 static inline int security_inode_need_killpriv(struct dentry *dentry)
2260 return cap_inode_need_killpriv(dentry);
2263 static inline int security_inode_killpriv(struct dentry *dentry)
2265 return cap_inode_killpriv(dentry);
2268 static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
2273 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
2278 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
2283 static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
2288 static inline int security_file_permission(struct file *file, int mask)
2293 static inline int security_file_alloc(struct file *file)
2298 static inline void security_file_free(struct file *file)
2301 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
2307 static inline int security_file_mmap(struct file *file, unsigned long reqprot,
2309 unsigned long flags,
2311 unsigned long addr_only)
2313 return cap_file_mmap(file, reqprot, prot, flags, addr, addr_only);
2316 static inline int security_file_mprotect(struct vm_area_struct *vma,
2317 unsigned long reqprot,
2323 static inline int security_file_lock(struct file *file, unsigned int cmd)
2328 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
2334 static inline int security_file_set_fowner(struct file *file)
2339 static inline int security_file_send_sigiotask(struct task_struct *tsk,
2340 struct fown_struct *fown,
2346 static inline int security_file_receive(struct file *file)
2351 static inline int security_dentry_open(struct file *file,
2352 const struct cred *cred)
2357 static inline int security_task_create(unsigned long clone_flags)
2362 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
2367 static inline void security_cred_free(struct cred *cred)
2370 static inline int security_prepare_creds(struct cred *new,
2371 const struct cred *old,
2377 static inline void security_commit_creds(struct cred *new,
2378 const struct cred *old)
2382 static inline void security_transfer_creds(struct cred *new,
2383 const struct cred *old)
2387 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
2392 static inline int security_kernel_create_files_as(struct cred *cred,
2393 struct inode *inode)
2398 static inline int security_kernel_module_request(char *kmod_name)
2403 static inline int security_task_setuid(uid_t id0, uid_t id1, uid_t id2,
2409 static inline int security_task_fix_setuid(struct cred *new,
2410 const struct cred *old,
2413 return cap_task_fix_setuid(new, old, flags);
2416 static inline int security_task_setgid(gid_t id0, gid_t id1, gid_t id2,
2422 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
2427 static inline int security_task_getpgid(struct task_struct *p)
2432 static inline int security_task_getsid(struct task_struct *p)
2437 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
2442 static inline int security_task_setgroups(struct group_info *group_info)
2447 static inline int security_task_setnice(struct task_struct *p, int nice)
2449 return cap_task_setnice(p, nice);
2452 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
2454 return cap_task_setioprio(p, ioprio);
2457 static inline int security_task_getioprio(struct task_struct *p)
2462 static inline int security_task_setrlimit(unsigned int resource,
2463 struct rlimit *new_rlim)
2468 static inline int security_task_setscheduler(struct task_struct *p,
2470 struct sched_param *lp)
2472 return cap_task_setscheduler(p, policy, lp);
2475 static inline int security_task_getscheduler(struct task_struct *p)
2480 static inline int security_task_movememory(struct task_struct *p)
2485 static inline int security_task_kill(struct task_struct *p,
2486 struct siginfo *info, int sig,
2492 static inline int security_task_wait(struct task_struct *p)
2497 static inline int security_task_prctl(int option, unsigned long arg2,
2502 return cap_task_prctl(option, arg2, arg3, arg3, arg5);
2505 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
2508 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
2514 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
2519 static inline int security_msg_msg_alloc(struct msg_msg *msg)
2524 static inline void security_msg_msg_free(struct msg_msg *msg)
2527 static inline int security_msg_queue_alloc(struct msg_queue *msq)
2532 static inline void security_msg_queue_free(struct msg_queue *msq)
2535 static inline int security_msg_queue_associate(struct msg_queue *msq,
2541 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
2546 static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
2547 struct msg_msg *msg, int msqflg)
2552 static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
2553 struct msg_msg *msg,
2554 struct task_struct *target,
2555 long type, int mode)
2560 static inline int security_shm_alloc(struct shmid_kernel *shp)
2565 static inline void security_shm_free(struct shmid_kernel *shp)
2568 static inline int security_shm_associate(struct shmid_kernel *shp,
2574 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
2579 static inline int security_shm_shmat(struct shmid_kernel *shp,
2580 char __user *shmaddr, int shmflg)
2585 static inline int security_sem_alloc(struct sem_array *sma)
2590 static inline void security_sem_free(struct sem_array *sma)
2593 static inline int security_sem_associate(struct sem_array *sma, int semflg)
2598 static inline int security_sem_semctl(struct sem_array *sma, int cmd)
2603 static inline int security_sem_semop(struct sem_array *sma,
2604 struct sembuf *sops, unsigned nsops,
2610 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
2613 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
2618 static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2623 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
2625 return cap_netlink_send(sk, skb);
2628 static inline int security_netlink_recv(struct sk_buff *skb, int cap)
2630 return cap_netlink_recv(skb, cap);
2633 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2638 static inline int security_secctx_to_secid(const char *secdata,
2645 static inline void security_release_secctx(char *secdata, u32 seclen)
2649 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
2653 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
2657 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
2661 #endif /* CONFIG_SECURITY */
2663 #ifdef CONFIG_SECURITY_NETWORK
2665 int security_unix_stream_connect(struct socket *sock, struct socket *other,
2666 struct sock *newsk);
2667 int security_unix_may_send(struct socket *sock, struct socket *other);
2668 int security_socket_create(int family, int type, int protocol, int kern);
2669 int security_socket_post_create(struct socket *sock, int family,
2670 int type, int protocol, int kern);
2671 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
2672 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
2673 int security_socket_listen(struct socket *sock, int backlog);
2674 int security_socket_accept(struct socket *sock, struct socket *newsock);
2675 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
2676 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2677 int size, int flags);
2678 int security_socket_getsockname(struct socket *sock);
2679 int security_socket_getpeername(struct socket *sock);
2680 int security_socket_getsockopt(struct socket *sock, int level, int optname);
2681 int security_socket_setsockopt(struct socket *sock, int level, int optname);
2682 int security_socket_shutdown(struct socket *sock, int how);
2683 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
2684 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2685 int __user *optlen, unsigned len);
2686 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
2687 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
2688 void security_sk_free(struct sock *sk);
2689 void security_sk_clone(const struct sock *sk, struct sock *newsk);
2690 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
2691 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
2692 void security_sock_graft(struct sock*sk, struct socket *parent);
2693 int security_inet_conn_request(struct sock *sk,
2694 struct sk_buff *skb, struct request_sock *req);
2695 void security_inet_csk_clone(struct sock *newsk,
2696 const struct request_sock *req);
2697 void security_inet_conn_established(struct sock *sk,
2698 struct sk_buff *skb);
2699 int security_tun_dev_create(void);
2700 void security_tun_dev_post_create(struct sock *sk);
2701 int security_tun_dev_attach(struct sock *sk);
2703 #else /* CONFIG_SECURITY_NETWORK */
2704 static inline int security_unix_stream_connect(struct socket *sock,
2705 struct socket *other,
2711 static inline int security_unix_may_send(struct socket *sock,
2712 struct socket *other)
2717 static inline int security_socket_create(int family, int type,
2718 int protocol, int kern)
2723 static inline int security_socket_post_create(struct socket *sock,
2726 int protocol, int kern)
2731 static inline int security_socket_bind(struct socket *sock,
2732 struct sockaddr *address,
2738 static inline int security_socket_connect(struct socket *sock,
2739 struct sockaddr *address,
2745 static inline int security_socket_listen(struct socket *sock, int backlog)
2750 static inline int security_socket_accept(struct socket *sock,
2751 struct socket *newsock)
2756 static inline int security_socket_sendmsg(struct socket *sock,
2757 struct msghdr *msg, int size)
2762 static inline int security_socket_recvmsg(struct socket *sock,
2763 struct msghdr *msg, int size,
2769 static inline int security_socket_getsockname(struct socket *sock)
2774 static inline int security_socket_getpeername(struct socket *sock)
2779 static inline int security_socket_getsockopt(struct socket *sock,
2780 int level, int optname)
2785 static inline int security_socket_setsockopt(struct socket *sock,
2786 int level, int optname)
2791 static inline int security_socket_shutdown(struct socket *sock, int how)
2795 static inline int security_sock_rcv_skb(struct sock *sk,
2796 struct sk_buff *skb)
2801 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2802 int __user *optlen, unsigned len)
2804 return -ENOPROTOOPT;
2807 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
2809 return -ENOPROTOOPT;
2812 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2817 static inline void security_sk_free(struct sock *sk)
2821 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
2825 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
2829 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2833 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
2837 static inline int security_inet_conn_request(struct sock *sk,
2838 struct sk_buff *skb, struct request_sock *req)
2843 static inline void security_inet_csk_clone(struct sock *newsk,
2844 const struct request_sock *req)
2848 static inline void security_inet_conn_established(struct sock *sk,
2849 struct sk_buff *skb)
2853 static inline int security_tun_dev_create(void)
2858 static inline void security_tun_dev_post_create(struct sock *sk)
2862 static inline int security_tun_dev_attach(struct sock *sk)
2866 #endif /* CONFIG_SECURITY_NETWORK */
2868 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2870 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx);
2871 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
2872 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
2873 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
2874 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
2875 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2876 struct xfrm_sec_ctx *polsec, u32 secid);
2877 int security_xfrm_state_delete(struct xfrm_state *x);
2878 void security_xfrm_state_free(struct xfrm_state *x);
2879 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
2880 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2881 struct xfrm_policy *xp, struct flowi *fl);
2882 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
2883 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
2885 #else /* CONFIG_SECURITY_NETWORK_XFRM */
2887 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
2892 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
2897 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
2901 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
2906 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
2907 struct xfrm_user_sec_ctx *sec_ctx)
2912 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2913 struct xfrm_sec_ctx *polsec, u32 secid)
2918 static inline void security_xfrm_state_free(struct xfrm_state *x)
2922 static inline int security_xfrm_state_delete(struct xfrm_state *x)
2927 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
2932 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2933 struct xfrm_policy *xp, struct flowi *fl)
2938 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
2943 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2947 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2949 #ifdef CONFIG_SECURITY_PATH
2950 int security_path_unlink(struct path *dir, struct dentry *dentry);
2951 int security_path_mkdir(struct path *dir, struct dentry *dentry, int mode);
2952 int security_path_rmdir(struct path *dir, struct dentry *dentry);
2953 int security_path_mknod(struct path *dir, struct dentry *dentry, int mode,
2955 int security_path_truncate(struct path *path, loff_t length,
2956 unsigned int time_attrs);
2957 int security_path_symlink(struct path *dir, struct dentry *dentry,
2958 const char *old_name);
2959 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
2960 struct dentry *new_dentry);
2961 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
2962 struct path *new_dir, struct dentry *new_dentry);
2963 int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
2965 int security_path_chown(struct path *path, uid_t uid, gid_t gid);
2966 int security_path_chroot(struct path *path);
2967 #else /* CONFIG_SECURITY_PATH */
2968 static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
2973 static inline int security_path_mkdir(struct path *dir, struct dentry *dentry,
2979 static inline int security_path_rmdir(struct path *dir, struct dentry *dentry)
2984 static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
2985 int mode, unsigned int dev)
2990 static inline int security_path_truncate(struct path *path, loff_t length,
2991 unsigned int time_attrs)
2996 static inline int security_path_symlink(struct path *dir, struct dentry *dentry,
2997 const char *old_name)
3002 static inline int security_path_link(struct dentry *old_dentry,
3003 struct path *new_dir,
3004 struct dentry *new_dentry)
3009 static inline int security_path_rename(struct path *old_dir,
3010 struct dentry *old_dentry,
3011 struct path *new_dir,
3012 struct dentry *new_dentry)
3017 static inline int security_path_chmod(struct dentry *dentry,
3018 struct vfsmount *mnt,
3024 static inline int security_path_chown(struct path *path, uid_t uid, gid_t gid)
3029 static inline int security_path_chroot(struct path *path)
3033 #endif /* CONFIG_SECURITY_PATH */
3036 #ifdef CONFIG_SECURITY
3038 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
3039 void security_key_free(struct key *key);
3040 int security_key_permission(key_ref_t key_ref,
3041 const struct cred *cred, key_perm_t perm);
3042 int security_key_getsecurity(struct key *key, char **_buffer);
3043 int security_key_session_to_parent(const struct cred *cred,
3044 const struct cred *parent_cred,
3049 static inline int security_key_alloc(struct key *key,
3050 const struct cred *cred,
3051 unsigned long flags)
3056 static inline void security_key_free(struct key *key)
3060 static inline int security_key_permission(key_ref_t key_ref,
3061 const struct cred *cred,
3067 static inline int security_key_getsecurity(struct key *key, char **_buffer)
3073 static inline int security_key_session_to_parent(const struct cred *cred,
3074 const struct cred *parent_cred,
3081 #endif /* CONFIG_KEYS */
3084 #ifdef CONFIG_SECURITY
3085 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
3086 int security_audit_rule_known(struct audit_krule *krule);
3087 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
3088 struct audit_context *actx);
3089 void security_audit_rule_free(void *lsmrule);
3093 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
3099 static inline int security_audit_rule_known(struct audit_krule *krule)
3104 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
3105 void *lsmrule, struct audit_context *actx)
3110 static inline void security_audit_rule_free(void *lsmrule)
3113 #endif /* CONFIG_SECURITY */
3114 #endif /* CONFIG_AUDIT */
3116 #ifdef CONFIG_SECURITYFS
3118 extern struct dentry *securityfs_create_file(const char *name, mode_t mode,
3119 struct dentry *parent, void *data,
3120 const struct file_operations *fops);
3121 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
3122 extern void securityfs_remove(struct dentry *dentry);
3124 #else /* CONFIG_SECURITYFS */
3126 static inline struct dentry *securityfs_create_dir(const char *name,
3127 struct dentry *parent)
3129 return ERR_PTR(-ENODEV);
3132 static inline struct dentry *securityfs_create_file(const char *name,
3134 struct dentry *parent,
3136 const struct file_operations *fops)
3138 return ERR_PTR(-ENODEV);
3141 static inline void securityfs_remove(struct dentry *dentry)
3146 #ifdef CONFIG_SECURITY
3148 static inline char *alloc_secdata(void)
3150 return (char *)get_zeroed_page(GFP_KERNEL);
3153 static inline void free_secdata(void *secdata)
3155 free_page((unsigned long)secdata);
3160 static inline char *alloc_secdata(void)
3165 static inline void free_secdata(void *secdata)
3167 #endif /* CONFIG_SECURITY */
3169 #endif /* ! __LINUX_SECURITY_H */