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);
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 extern unsigned long mmap_min_addr;
99 extern unsigned long dac_mmap_min_addr;
101 * Values used in the task_security_ops calls
103 /* setuid or setgid, id0 == uid or gid */
104 #define LSM_SETID_ID 1
106 /* setreuid or setregid, id0 == real, id1 == eff */
107 #define LSM_SETID_RE 2
109 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
110 #define LSM_SETID_RES 4
112 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
113 #define LSM_SETID_FS 8
115 /* forward declares to avoid warnings */
119 /* bprm->unsafe reasons */
120 #define LSM_UNSAFE_SHARE 1
121 #define LSM_UNSAFE_PTRACE 2
122 #define LSM_UNSAFE_PTRACE_CAP 4
125 * If a hint addr is less than mmap_min_addr change hint to be as
126 * low as possible but still greater than mmap_min_addr
128 static inline unsigned long round_hint_to_min(unsigned long hint)
131 if (((void *)hint != NULL) &&
132 (hint < mmap_min_addr))
133 return PAGE_ALIGN(mmap_min_addr);
136 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
137 void __user *buffer, size_t *lenp, loff_t *ppos);
139 #ifdef CONFIG_SECURITY
141 struct security_mnt_opts {
147 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
149 opts->mnt_opts = NULL;
150 opts->mnt_opts_flags = NULL;
151 opts->num_mnt_opts = 0;
154 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
158 for (i = 0; i < opts->num_mnt_opts; i++)
159 kfree(opts->mnt_opts[i]);
160 kfree(opts->mnt_opts);
161 opts->mnt_opts = NULL;
162 kfree(opts->mnt_opts_flags);
163 opts->mnt_opts_flags = NULL;
164 opts->num_mnt_opts = 0;
168 * struct security_operations - main security structure
170 * Security module identifier.
173 * A string that acts as a unique identifeir for the LSM with max number
174 * of characters = SECURITY_NAME_MAX.
176 * Security hooks for program execution operations.
179 * Save security information in the bprm->security field, typically based
180 * on information about the bprm->file, for later use by the apply_creds
181 * hook. This hook may also optionally check permissions (e.g. for
182 * transitions between security domains).
183 * This hook may be called multiple times during a single execve, e.g. for
184 * interpreters. The hook can tell whether it has already been called by
185 * checking to see if @bprm->security is non-NULL. If so, then the hook
186 * may decide either to retain the security information saved earlier or
188 * @bprm contains the linux_binprm structure.
189 * Return 0 if the hook is successful and permission is granted.
190 * @bprm_check_security:
191 * This hook mediates the point when a search for a binary handler will
192 * begin. It allows a check the @bprm->security value which is set in the
193 * preceding set_creds call. The primary difference from set_creds is
194 * that the argv list and envp list are reliably available in @bprm. This
195 * hook may be called multiple times during a single execve; and in each
196 * pass set_creds is called first.
197 * @bprm contains the linux_binprm structure.
198 * Return 0 if the hook is successful and permission is granted.
199 * @bprm_committing_creds:
200 * Prepare to install the new security attributes of a process being
201 * transformed by an execve operation, based on the old credentials
202 * pointed to by @current->cred and the information set in @bprm->cred by
203 * the bprm_set_creds hook. @bprm points to the linux_binprm structure.
204 * This hook is a good place to perform state changes on the process such
205 * as closing open file descriptors to which access will no longer be
206 * granted when the attributes are changed. This is called immediately
207 * before commit_creds().
208 * @bprm_committed_creds:
209 * Tidy up after the installation of the new security attributes of a
210 * process being transformed by an execve operation. The new credentials
211 * have, by this point, been set to @current->cred. @bprm points to the
212 * linux_binprm structure. This hook is a good place to perform state
213 * changes on the process such as clearing out non-inheritable signal
214 * state. This is called immediately after commit_creds().
216 * Return a boolean value (0 or 1) indicating whether a "secure exec"
217 * is required. The flag is passed in the auxiliary table
218 * on the initial stack to the ELF interpreter to indicate whether libc
219 * should enable secure mode.
220 * @bprm contains the linux_binprm structure.
222 * Security hooks for filesystem operations.
224 * @sb_alloc_security:
225 * Allocate and attach a security structure to the sb->s_security field.
226 * The s_security field is initialized to NULL when the structure is
228 * @sb contains the super_block structure to be modified.
229 * Return 0 if operation was successful.
231 * Deallocate and clear the sb->s_security field.
232 * @sb contains the super_block structure to be modified.
234 * Check permission before obtaining filesystem statistics for the @mnt
236 * @dentry is a handle on the superblock for the filesystem.
237 * Return 0 if permission is granted.
239 * Check permission before an object specified by @dev_name is mounted on
240 * the mount point named by @nd. For an ordinary mount, @dev_name
241 * identifies a device if the file system type requires a device. For a
242 * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a
243 * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
244 * pathname of the object being mounted.
245 * @dev_name contains the name for object being mounted.
246 * @path contains the path for mount point object.
247 * @type contains the filesystem type.
248 * @flags contains the mount flags.
249 * @data contains the filesystem-specific data.
250 * Return 0 if permission is granted.
252 * Allow mount option data to be copied prior to parsing by the filesystem,
253 * so that the security module can extract security-specific mount
254 * options cleanly (a filesystem may modify the data e.g. with strsep()).
255 * This also allows the original mount data to be stripped of security-
256 * specific options to avoid having to make filesystems aware of them.
257 * @type the type of filesystem being mounted.
258 * @orig the original mount data copied from userspace.
259 * @copy copied data which will be passed to the security module.
260 * Returns 0 if the copy was successful.
262 * Check permission before the device with superblock @mnt->sb is mounted
263 * on the mount point named by @nd.
264 * @mnt contains the vfsmount for device being mounted.
265 * @path contains the path for the mount point.
266 * Return 0 if permission is granted.
268 * Check permission before the @mnt file system is unmounted.
269 * @mnt contains the mounted file system.
270 * @flags contains the unmount flags, e.g. MNT_FORCE.
271 * Return 0 if permission is granted.
273 * Close any files in the @mnt mounted filesystem that are held open by
274 * the security module. This hook is called during an umount operation
275 * prior to checking whether the filesystem is still busy.
276 * @mnt contains the mounted filesystem.
278 * Handle a failed umount of the @mnt mounted filesystem, e.g. re-opening
279 * any files that were closed by umount_close. This hook is called during
280 * an umount operation if the umount fails after a call to the
282 * @mnt contains the mounted filesystem.
284 * Update the security module's state when a filesystem is remounted.
285 * This hook is only called if the remount was successful.
286 * @mnt contains the mounted file system.
287 * @flags contains the new filesystem flags.
288 * @data contains the filesystem-specific data.
290 * Update the security module's state when a filesystem is mounted.
291 * This hook is called any time a mount is successfully grafetd to
293 * @mnt contains the mounted filesystem.
294 * @mountpoint contains the path for the mount point.
296 * Check permission before pivoting the root filesystem.
297 * @old_path contains the path for the new location of the current root (put_old).
298 * @new_path contains the path for the new root (new_root).
299 * Return 0 if permission is granted.
300 * @sb_post_pivotroot:
301 * Update module state after a successful pivot.
302 * @old_path contains the path for the old root.
303 * @new_path contains the path for the new root.
305 * Set the security relevant mount options used for a superblock
306 * @sb the superblock to set security mount options for
307 * @opts binary data structure containing all lsm mount data
308 * @sb_clone_mnt_opts:
309 * Copy all security options from a given superblock to another
310 * @oldsb old superblock which contain information to clone
311 * @newsb new superblock which needs filled in
312 * @sb_parse_opts_str:
313 * Parse a string of security data filling in the opts structure
314 * @options string containing all mount options known by the LSM
315 * @opts binary data structure usable by the LSM
317 * Security hooks for inode operations.
319 * @inode_alloc_security:
320 * Allocate and attach a security structure to @inode->i_security. The
321 * i_security field is initialized to NULL when the inode structure is
323 * @inode contains the inode structure.
324 * Return 0 if operation was successful.
325 * @inode_free_security:
326 * @inode contains the inode structure.
327 * Deallocate the inode security structure and set @inode->i_security to
329 * @inode_init_security:
330 * Obtain the security attribute name suffix and value to set on a newly
331 * created inode and set up the incore security field for the new inode.
332 * This hook is called by the fs code as part of the inode creation
333 * transaction and provides for atomic labeling of the inode, unlike
334 * the post_create/mkdir/... hooks called by the VFS. The hook function
335 * is expected to allocate the name and value via kmalloc, with the caller
336 * being responsible for calling kfree after using them.
337 * If the security module does not use security attributes or does
338 * not wish to put a security attribute on this particular inode,
339 * then it should return -EOPNOTSUPP to skip this processing.
340 * @inode contains the inode structure of the newly created inode.
341 * @dir contains the inode structure of the parent directory.
342 * @name will be set to the allocated name suffix (e.g. selinux).
343 * @value will be set to the allocated attribute value.
344 * @len will be set to the length of the value.
345 * Returns 0 if @name and @value have been successfully set,
346 * -EOPNOTSUPP if no security attribute is needed, or
347 * -ENOMEM on memory allocation failure.
349 * Check permission to create a regular file.
350 * @dir contains inode structure of the parent of the new file.
351 * @dentry contains the dentry structure for the file to be created.
352 * @mode contains the file mode of the file to be created.
353 * Return 0 if permission is granted.
355 * Check permission before creating a new hard link to a file.
356 * @old_dentry contains the dentry structure for an existing link to the file.
357 * @dir contains the inode structure of the parent directory of the new link.
358 * @new_dentry contains the dentry structure for the new link.
359 * Return 0 if permission is granted.
361 * Check permission before creating a new hard link to a file.
362 * @old_dentry contains the dentry structure for an existing link
364 * @new_dir contains the path structure of the parent directory of
366 * @new_dentry contains the dentry structure for the new link.
367 * Return 0 if permission is granted.
369 * Check the permission to remove a hard link to a file.
370 * @dir contains the inode structure of parent directory of the file.
371 * @dentry contains the dentry structure for file to be unlinked.
372 * Return 0 if permission is granted.
374 * Check the permission to remove a hard link to a file.
375 * @dir contains the path structure of parent directory of the file.
376 * @dentry contains the dentry structure for file to be unlinked.
377 * Return 0 if permission is granted.
379 * Check the permission to create a symbolic link to a file.
380 * @dir contains the inode structure of parent directory of the symbolic link.
381 * @dentry contains the dentry structure of the symbolic link.
382 * @old_name contains the pathname of file.
383 * Return 0 if permission is granted.
385 * Check the permission to create a symbolic link to a file.
386 * @dir contains the path structure of parent directory of
388 * @dentry contains the dentry structure of the symbolic link.
389 * @old_name contains the pathname of file.
390 * Return 0 if permission is granted.
392 * Check permissions to create a new directory in the existing directory
393 * associated with inode strcture @dir.
394 * @dir containst the inode structure of parent of the directory to be created.
395 * @dentry contains the dentry structure of new directory.
396 * @mode contains the mode of new directory.
397 * Return 0 if permission is granted.
399 * Check permissions to create a new directory in the existing directory
400 * associated with path strcture @path.
401 * @dir containst the path structure of parent of the directory
403 * @dentry contains the dentry structure of new directory.
404 * @mode contains the mode of new directory.
405 * Return 0 if permission is granted.
407 * Check the permission to remove a directory.
408 * @dir contains the inode structure of parent of the directory to be removed.
409 * @dentry contains the dentry structure of directory to be removed.
410 * Return 0 if permission is granted.
412 * Check the permission to remove a directory.
413 * @dir contains the path structure of parent of the directory to be
415 * @dentry contains the dentry structure of directory to be removed.
416 * Return 0 if permission is granted.
418 * Check permissions when creating a special file (or a socket or a fifo
419 * file created via the mknod system call). Note that if mknod operation
420 * is being done for a regular file, then the create hook will be called
422 * @dir contains the inode structure of parent of the new file.
423 * @dentry contains the dentry structure of the new file.
424 * @mode contains the mode of the new file.
425 * @dev contains the device number.
426 * Return 0 if permission is granted.
428 * Check permissions when creating a file. Note that this hook is called
429 * even if mknod operation is being done for a regular file.
430 * @dir contains the path structure of parent of the new file.
431 * @dentry contains the dentry structure of the new file.
432 * @mode contains the mode of the new file.
433 * @dev contains the undecoded device number. Use new_decode_dev() to get
434 * the decoded device number.
435 * Return 0 if permission is granted.
437 * Check for permission to rename a file or directory.
438 * @old_dir contains the inode structure for parent of the old link.
439 * @old_dentry contains the dentry structure of the old link.
440 * @new_dir contains the inode structure for parent of the new link.
441 * @new_dentry contains the dentry structure of the new link.
442 * Return 0 if permission is granted.
444 * Check for permission to rename a file or directory.
445 * @old_dir contains the path structure for parent of the old link.
446 * @old_dentry contains the dentry structure of the old link.
447 * @new_dir contains the path structure for parent of the new link.
448 * @new_dentry contains the dentry structure of the new link.
449 * Return 0 if permission is granted.
451 * Check for permission to change DAC's permission of a file or directory.
452 * @dentry contains the dentry structure.
453 * @mnt contains the vfsmnt structure.
454 * @mode contains DAC's mode.
455 * Return 0 if permission is granted.
457 * Check for permission to change owner/group of a file or directory.
458 * @path contains the path structure.
459 * @uid contains new owner's ID.
460 * @gid contains new group's ID.
461 * Return 0 if permission is granted.
463 * Check the permission to read the symbolic link.
464 * @dentry contains the dentry structure for the file link.
465 * Return 0 if permission is granted.
466 * @inode_follow_link:
467 * Check permission to follow a symbolic link when looking up a pathname.
468 * @dentry contains the dentry structure for the link.
469 * @nd contains the nameidata structure for the parent directory.
470 * Return 0 if permission is granted.
472 * Check permission before accessing an inode. This hook is called by the
473 * existing Linux permission function, so a security module can use it to
474 * provide additional checking for existing Linux permission checks.
475 * Notice that this hook is called when a file is opened (as well as many
476 * other operations), whereas the file_security_ops permission hook is
477 * called when the actual read/write operations are performed.
478 * @inode contains the inode structure to check.
479 * @mask contains the permission mask.
480 * @nd contains the nameidata (may be NULL).
481 * Return 0 if permission is granted.
483 * Check permission before setting file attributes. Note that the kernel
484 * call to notify_change is performed from several locations, whenever
485 * file attributes change (such as when a file is truncated, chown/chmod
486 * operations, transferring disk quotas, etc).
487 * @dentry contains the dentry structure for the file.
488 * @attr is the iattr structure containing the new file attributes.
489 * Return 0 if permission is granted.
491 * Check permission before truncating a file.
492 * @path contains the path structure for the file.
493 * @length is the new length of the file.
494 * @time_attrs is the flags passed to do_truncate().
495 * Return 0 if permission is granted.
497 * Check permission before obtaining file attributes.
498 * @mnt is the vfsmount where the dentry was looked up
499 * @dentry contains the dentry structure for the file.
500 * Return 0 if permission is granted.
502 * @inode contains the inode structure for deleted inode.
503 * This hook is called when a deleted inode is released (i.e. an inode
504 * with no hard links has its use count drop to zero). A security module
505 * can use this hook to release any persistent label associated with the
508 * Check permission before setting the extended attributes
509 * @value identified by @name for @dentry.
510 * Return 0 if permission is granted.
511 * @inode_post_setxattr:
512 * Update inode security field after successful setxattr operation.
513 * @value identified by @name for @dentry.
515 * Check permission before obtaining the extended attributes
516 * identified by @name for @dentry.
517 * Return 0 if permission is granted.
519 * Check permission before obtaining the list of extended attribute
521 * Return 0 if permission is granted.
522 * @inode_removexattr:
523 * Check permission before removing the extended attribute
524 * identified by @name for @dentry.
525 * Return 0 if permission is granted.
526 * @inode_getsecurity:
527 * Retrieve a copy of the extended attribute representation of the
528 * security label associated with @name for @inode via @buffer. Note that
529 * @name is the remainder of the attribute name after the security prefix
530 * has been removed. @alloc is used to specify of the call should return a
531 * value via the buffer or just the value length Return size of buffer on
533 * @inode_setsecurity:
534 * Set the security label associated with @name for @inode from the
535 * extended attribute value @value. @size indicates the size of the
536 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
537 * Note that @name is the remainder of the attribute name after the
538 * security. prefix has been removed.
539 * Return 0 on success.
540 * @inode_listsecurity:
541 * Copy the extended attribute names for the security labels
542 * associated with @inode into @buffer. The maximum size of @buffer
543 * is specified by @buffer_size. @buffer may be NULL to request
544 * the size of the buffer required.
545 * Returns number of bytes used/required on success.
546 * @inode_need_killpriv:
547 * Called when an inode has been changed.
548 * @dentry is the dentry being changed.
549 * Return <0 on error to abort the inode change operation.
550 * Return 0 if inode_killpriv does not need to be called.
551 * Return >0 if inode_killpriv does need to be called.
553 * The setuid bit is being removed. Remove similar security labels.
554 * Called with the dentry->d_inode->i_mutex held.
555 * @dentry is the dentry being changed.
556 * Return 0 on success. If error is returned, then the operation
557 * causing setuid bit removal is failed.
559 * Get the secid associated with the node.
560 * @inode contains a pointer to the inode.
561 * @secid contains a pointer to the location where result will be saved.
562 * In case of failure, @secid will be set to zero.
564 * Security hooks for file operations
567 * Check file permissions before accessing an open file. This hook is
568 * called by various operations that read or write files. A security
569 * module can use this hook to perform additional checking on these
570 * operations, e.g. to revalidate permissions on use to support privilege
571 * bracketing or policy changes. Notice that this hook is used when the
572 * actual read/write operations are performed, whereas the
573 * inode_security_ops hook is called when a file is opened (as well as
574 * many other operations).
575 * Caveat: Although this hook can be used to revalidate permissions for
576 * various system call operations that read or write files, it does not
577 * address the revalidation of permissions for memory-mapped files.
578 * Security modules must handle this separately if they need such
580 * @file contains the file structure being accessed.
581 * @mask contains the requested permissions.
582 * Return 0 if permission is granted.
583 * @file_alloc_security:
584 * Allocate and attach a security structure to the file->f_security field.
585 * The security field is initialized to NULL when the structure is first
587 * @file contains the file structure to secure.
588 * Return 0 if the hook is successful and permission is granted.
589 * @file_free_security:
590 * Deallocate and free any security structures stored in file->f_security.
591 * @file contains the file structure being modified.
593 * @file contains the file structure.
594 * @cmd contains the operation to perform.
595 * @arg contains the operational arguments.
596 * Check permission for an ioctl operation on @file. Note that @arg can
597 * sometimes represents a user space pointer; in other cases, it may be a
598 * simple integer value. When @arg represents a user space pointer, it
599 * should never be used by the security module.
600 * Return 0 if permission is granted.
602 * Check permissions for a mmap operation. The @file may be NULL, e.g.
603 * if mapping anonymous memory.
604 * @file contains the file structure for file to map (may be NULL).
605 * @reqprot contains the protection requested by the application.
606 * @prot contains the protection that will be applied by the kernel.
607 * @flags contains the operational flags.
608 * Return 0 if permission is granted.
610 * Check permissions before changing memory access permissions.
611 * @vma contains the memory region to modify.
612 * @reqprot contains the protection requested by the application.
613 * @prot contains the protection that will be applied by the kernel.
614 * Return 0 if permission is granted.
616 * Check permission before performing file locking operations.
617 * Note: this hook mediates both flock and fcntl style locks.
618 * @file contains the file structure.
619 * @cmd contains the posix-translated lock operation to perform
620 * (e.g. F_RDLCK, F_WRLCK).
621 * Return 0 if permission is granted.
623 * Check permission before allowing the file operation specified by @cmd
624 * from being performed on the file @file. Note that @arg can sometimes
625 * represents a user space pointer; in other cases, it may be a simple
626 * integer value. When @arg represents a user space pointer, it should
627 * never be used by the security module.
628 * @file contains the file structure.
629 * @cmd contains the operation to be performed.
630 * @arg contains the operational arguments.
631 * Return 0 if permission is granted.
633 * Save owner security information (typically from current->security) in
634 * file->f_security for later use by the send_sigiotask hook.
635 * @file contains the file structure to update.
636 * Return 0 on success.
637 * @file_send_sigiotask:
638 * Check permission for the file owner @fown to send SIGIO or SIGURG to the
639 * process @tsk. Note that this hook is sometimes called from interrupt.
640 * Note that the fown_struct, @fown, is never outside the context of a
641 * struct file, so the file structure (and associated security information)
642 * can always be obtained:
643 * container_of(fown, struct file, f_owner)
644 * @tsk contains the structure of task receiving signal.
645 * @fown contains the file owner information.
646 * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
647 * Return 0 if permission is granted.
649 * This hook allows security modules to control the ability of a process
650 * to receive an open file descriptor via socket IPC.
651 * @file contains the file structure being received.
652 * Return 0 if permission is granted.
654 * Security hook for dentry
657 * Save open-time permission checking state for later use upon
658 * file_permission, and recheck access if anything has changed
659 * since inode_permission.
661 * Security hooks for task operations.
664 * Check permission before creating a child process. See the clone(2)
665 * manual page for definitions of the @clone_flags.
666 * @clone_flags contains the flags indicating what should be shared.
667 * Return 0 if permission is granted.
669 * @cred points to the credentials.
670 * @gfp indicates the atomicity of any memory allocations.
671 * Only allocate sufficient memory and attach to @cred such that
672 * cred_transfer() will not get ENOMEM.
674 * @cred points to the credentials.
675 * Deallocate and clear the cred->security field in a set of credentials.
677 * @new points to the new credentials.
678 * @old points to the original credentials.
679 * @gfp indicates the atomicity of any memory allocations.
680 * Prepare a new set of credentials by copying the data from the old set.
682 * @new points to the new credentials.
683 * @old points to the original credentials.
684 * Install a new set of credentials.
686 * @new points to the new credentials.
687 * @old points to the original credentials.
688 * Transfer data from original creds to new creds
690 * Set the credentials for a kernel service to act as (subjective context).
691 * @new points to the credentials to be modified.
692 * @secid specifies the security ID to be set
693 * The current task must be the one that nominated @secid.
694 * Return 0 if successful.
695 * @kernel_create_files_as:
696 * Set the file creation context in a set of credentials to be the same as
697 * the objective context of the specified inode.
698 * @new points to the credentials to be modified.
699 * @inode points to the inode to use as a reference.
700 * The current task must be the one that nominated @inode.
701 * Return 0 if successful.
702 * @kernel_module_request:
703 * Ability to trigger the kernel to automatically upcall to userspace for
704 * userspace to load a kernel module with the given name.
705 * Return 0 if successful.
707 * Check permission before setting one or more of the user identity
708 * attributes of the current process. The @flags parameter indicates
709 * which of the set*uid system calls invoked this hook and how to
710 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
711 * definitions at the beginning of this file for the @flags values and
713 * @id0 contains a uid.
714 * @id1 contains a uid.
715 * @id2 contains a uid.
716 * @flags contains one of the LSM_SETID_* values.
717 * Return 0 if permission is granted.
719 * Update the module's state after setting one or more of the user
720 * identity attributes of the current process. The @flags parameter
721 * indicates which of the set*uid system calls invoked this hook. If
722 * @new is the set of credentials that will be installed. Modifications
723 * should be made to this rather than to @current->cred.
724 * @old is the set of credentials that are being replaces
725 * @flags contains one of the LSM_SETID_* values.
726 * Return 0 on success.
728 * Check permission before setting one or more of the group identity
729 * attributes of the current process. The @flags parameter indicates
730 * which of the set*gid system calls invoked this hook and how to
731 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
732 * definitions at the beginning of this file for the @flags values and
734 * @id0 contains a gid.
735 * @id1 contains a gid.
736 * @id2 contains a gid.
737 * @flags contains one of the LSM_SETID_* values.
738 * Return 0 if permission is granted.
740 * Check permission before setting the process group identifier of the
741 * process @p to @pgid.
742 * @p contains the task_struct for process being modified.
743 * @pgid contains the new pgid.
744 * Return 0 if permission is granted.
746 * Check permission before getting the process group identifier of the
748 * @p contains the task_struct for the process.
749 * Return 0 if permission is granted.
751 * Check permission before getting the session identifier of the process
753 * @p contains the task_struct for the process.
754 * Return 0 if permission is granted.
756 * Retrieve the security identifier of the process @p.
757 * @p contains the task_struct for the process and place is into @secid.
758 * In case of failure, @secid will be set to zero.
761 * Check permission before setting the supplementary group set of the
763 * @group_info contains the new group information.
764 * Return 0 if permission is granted.
766 * Check permission before setting the nice value of @p to @nice.
767 * @p contains the task_struct of process.
768 * @nice contains the new nice value.
769 * Return 0 if permission is granted.
771 * Check permission before setting the ioprio value of @p to @ioprio.
772 * @p contains the task_struct of process.
773 * @ioprio contains the new ioprio value
774 * Return 0 if permission is granted.
776 * Check permission before getting the ioprio value of @p.
777 * @p contains the task_struct of process.
778 * Return 0 if permission is granted.
780 * Check permission before setting the resource limits of the current
781 * process for @resource to @new_rlim. The old resource limit values can
782 * be examined by dereferencing (current->signal->rlim + resource).
783 * @resource contains the resource whose limit is being set.
784 * @new_rlim contains the new limits for @resource.
785 * Return 0 if permission is granted.
786 * @task_setscheduler:
787 * Check permission before setting scheduling policy and/or parameters of
788 * process @p based on @policy and @lp.
789 * @p contains the task_struct for process.
790 * @policy contains the scheduling policy.
791 * @lp contains the scheduling parameters.
792 * Return 0 if permission is granted.
793 * @task_getscheduler:
794 * Check permission before obtaining scheduling information for process
796 * @p contains the task_struct for process.
797 * Return 0 if permission is granted.
799 * Check permission before moving memory owned by process @p.
800 * @p contains the task_struct for process.
801 * Return 0 if permission is granted.
803 * Check permission before sending signal @sig to @p. @info can be NULL,
804 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
805 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
806 * from the kernel and should typically be permitted.
807 * SIGIO signals are handled separately by the send_sigiotask hook in
809 * @p contains the task_struct for process.
810 * @info contains the signal information.
811 * @sig contains the signal value.
812 * @secid contains the sid of the process where the signal originated
813 * Return 0 if permission is granted.
815 * Check permission before allowing a process to reap a child process @p
816 * and collect its status information.
817 * @p contains the task_struct for process.
818 * Return 0 if permission is granted.
820 * Check permission before performing a process control operation on the
822 * @option contains the operation.
823 * @arg2 contains a argument.
824 * @arg3 contains a argument.
825 * @arg4 contains a argument.
826 * @arg5 contains a argument.
827 * Return -ENOSYS if no-one wanted to handle this op, any other value to
828 * cause prctl() to return immediately with that value.
830 * Set the security attributes for an inode based on an associated task's
831 * security attributes, e.g. for /proc/pid inodes.
832 * @p contains the task_struct for the task.
833 * @inode contains the inode structure for the inode.
835 * Security hooks for Netlink messaging.
838 * Save security information for a netlink message so that permission
839 * checking can be performed when the message is processed. The security
840 * information can be saved using the eff_cap field of the
841 * netlink_skb_parms structure. Also may be used to provide fine
842 * grained control over message transmission.
843 * @sk associated sock of task sending the message.,
844 * @skb contains the sk_buff structure for the netlink message.
845 * Return 0 if the information was successfully saved and message
846 * is allowed to be transmitted.
848 * Check permission before processing the received netlink message in
850 * @skb contains the sk_buff structure for the netlink message.
851 * @cap indicates the capability required
852 * Return 0 if permission is granted.
854 * Security hooks for Unix domain networking.
856 * @unix_stream_connect:
857 * Check permissions before establishing a Unix domain stream connection
858 * between @sock and @other.
859 * @sock contains the socket structure.
860 * @other contains the peer socket structure.
861 * Return 0 if permission is granted.
863 * Check permissions before connecting or sending datagrams from @sock to
865 * @sock contains the socket structure.
866 * @sock contains the peer socket structure.
867 * Return 0 if permission is granted.
869 * The @unix_stream_connect and @unix_may_send hooks were necessary because
870 * Linux provides an alternative to the conventional file name space for Unix
871 * domain sockets. Whereas binding and connecting to sockets in the file name
872 * space is mediated by the typical file permissions (and caught by the mknod
873 * and permission hooks in inode_security_ops), binding and connecting to
874 * sockets in the abstract name space is completely unmediated. Sufficient
875 * control of Unix domain sockets in the abstract name space isn't possible
876 * using only the socket layer hooks, since we need to know the actual target
877 * socket, which is not looked up until we are inside the af_unix code.
879 * Security hooks for socket operations.
882 * Check permissions prior to creating a new socket.
883 * @family contains the requested protocol family.
884 * @type contains the requested communications type.
885 * @protocol contains the requested protocol.
886 * @kern set to 1 if a kernel socket.
887 * Return 0 if permission is granted.
888 * @socket_post_create:
889 * This hook allows a module to update or allocate a per-socket security
890 * structure. Note that the security field was not added directly to the
891 * socket structure, but rather, the socket security information is stored
892 * in the associated inode. Typically, the inode alloc_security hook will
893 * allocate and and attach security information to
894 * sock->inode->i_security. This hook may be used to update the
895 * sock->inode->i_security field with additional information that wasn't
896 * available when the inode was allocated.
897 * @sock contains the newly created socket structure.
898 * @family contains the requested protocol family.
899 * @type contains the requested communications type.
900 * @protocol contains the requested protocol.
901 * @kern set to 1 if a kernel socket.
903 * Check permission before socket protocol layer bind operation is
904 * performed and the socket @sock is bound to the address specified in the
905 * @address parameter.
906 * @sock contains the socket structure.
907 * @address contains the address to bind to.
908 * @addrlen contains the length of address.
909 * Return 0 if permission is granted.
911 * Check permission before socket protocol layer connect operation
912 * attempts to connect socket @sock to a remote address, @address.
913 * @sock contains the socket structure.
914 * @address contains the address of remote endpoint.
915 * @addrlen contains the length of address.
916 * Return 0 if permission is granted.
918 * Check permission before socket protocol layer listen operation.
919 * @sock contains the socket structure.
920 * @backlog contains the maximum length for the pending connection queue.
921 * Return 0 if permission is granted.
923 * Check permission before accepting a new connection. Note that the new
924 * socket, @newsock, has been created and some information copied to it,
925 * but the accept operation has not actually been performed.
926 * @sock contains the listening socket structure.
927 * @newsock contains the newly created server socket for connection.
928 * Return 0 if permission is granted.
930 * Check permission before transmitting a message to another socket.
931 * @sock contains the socket structure.
932 * @msg contains the message to be transmitted.
933 * @size contains the size of message.
934 * Return 0 if permission is granted.
936 * Check permission before receiving a message from a socket.
937 * @sock contains the socket structure.
938 * @msg contains the message structure.
939 * @size contains the size of message structure.
940 * @flags contains the operational flags.
941 * Return 0 if permission is granted.
942 * @socket_getsockname:
943 * Check permission before the local address (name) of the socket object
944 * @sock is retrieved.
945 * @sock contains the socket structure.
946 * Return 0 if permission is granted.
947 * @socket_getpeername:
948 * Check permission before the remote address (name) of a socket object
949 * @sock is retrieved.
950 * @sock contains the socket structure.
951 * Return 0 if permission is granted.
952 * @socket_getsockopt:
953 * Check permissions before retrieving the options associated with socket
955 * @sock contains the socket structure.
956 * @level contains the protocol level to retrieve option from.
957 * @optname contains the name of option to retrieve.
958 * Return 0 if permission is granted.
959 * @socket_setsockopt:
960 * Check permissions before setting the options associated with socket
962 * @sock contains the socket structure.
963 * @level contains the protocol level to set options for.
964 * @optname contains the name of the option to set.
965 * Return 0 if permission is granted.
967 * Checks permission before all or part of a connection on the socket
968 * @sock is shut down.
969 * @sock contains the socket structure.
970 * @how contains the flag indicating how future sends and receives are handled.
971 * Return 0 if permission is granted.
972 * @socket_sock_rcv_skb:
973 * Check permissions on incoming network packets. This hook is distinct
974 * from Netfilter's IP input hooks since it is the first time that the
975 * incoming sk_buff @skb has been associated with a particular socket, @sk.
976 * @sk contains the sock (not socket) associated with the incoming sk_buff.
977 * @skb contains the incoming network data.
978 * @socket_getpeersec_stream:
979 * This hook allows the security module to provide peer socket security
980 * state for unix or connected tcp sockets to userspace via getsockopt
981 * SO_GETPEERSEC. For tcp sockets this can be meaningful if the
982 * socket is associated with an ipsec SA.
983 * @sock is the local socket.
984 * @optval userspace memory where the security state is to be copied.
985 * @optlen userspace int where the module should copy the actual length
986 * of the security state.
987 * @len as input is the maximum length to copy to userspace provided
989 * Return 0 if all is well, otherwise, typical getsockopt return
991 * @socket_getpeersec_dgram:
992 * This hook allows the security module to provide peer socket security
993 * state for udp sockets on a per-packet basis to userspace via
994 * getsockopt SO_GETPEERSEC. The application must first have indicated
995 * the IP_PASSSEC option via getsockopt. It can then retrieve the
996 * security state returned by this hook for a packet via the SCM_SECURITY
997 * ancillary message type.
998 * @skb is the skbuff for the packet being queried
999 * @secdata is a pointer to a buffer in which to copy the security data
1000 * @seclen is the maximum length for @secdata
1001 * Return 0 on success, error on failure.
1002 * @sk_alloc_security:
1003 * Allocate and attach a security structure to the sk->sk_security field,
1004 * which is used to copy security attributes between local stream sockets.
1005 * @sk_free_security:
1006 * Deallocate security structure.
1007 * @sk_clone_security:
1008 * Clone/copy security structure.
1010 * Retrieve the LSM-specific secid for the sock to enable caching of network
1013 * Sets the socket's isec sid to the sock's sid.
1014 * @inet_conn_request:
1015 * Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
1017 * Sets the new child socket's sid to the openreq sid.
1018 * @inet_conn_established:
1019 * Sets the connection's peersid to the secmark on skb.
1020 * @req_classify_flow:
1021 * Sets the flow's sid to the openreq sid.
1023 * Check permissions prior to creating a new TUN device.
1024 * @tun_dev_post_create:
1025 * This hook allows a module to update or allocate a per-socket security
1027 * @sk contains the newly created sock structure.
1029 * Check permissions prior to attaching to a persistent TUN device. This
1030 * hook can also be used by the module to update any security state
1031 * associated with the TUN device's sock structure.
1032 * @sk contains the existing sock structure.
1034 * Security hooks for XFRM operations.
1036 * @xfrm_policy_alloc_security:
1037 * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
1038 * Database used by the XFRM system.
1039 * @sec_ctx contains the security context information being provided by
1040 * the user-level policy update program (e.g., setkey).
1041 * Allocate a security structure to the xp->security field; the security
1042 * field is initialized to NULL when the xfrm_policy is allocated.
1043 * Return 0 if operation was successful (memory to allocate, legal context)
1044 * @xfrm_policy_clone_security:
1045 * @old_ctx contains an existing xfrm_sec_ctx.
1046 * @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
1047 * Allocate a security structure in new_ctxp that contains the
1048 * information from the old_ctx structure.
1049 * Return 0 if operation was successful (memory to allocate).
1050 * @xfrm_policy_free_security:
1051 * @ctx contains the xfrm_sec_ctx
1052 * Deallocate xp->security.
1053 * @xfrm_policy_delete_security:
1054 * @ctx contains the xfrm_sec_ctx.
1055 * Authorize deletion of xp->security.
1056 * @xfrm_state_alloc_security:
1057 * @x contains the xfrm_state being added to the Security Association
1058 * Database by the XFRM system.
1059 * @sec_ctx contains the security context information being provided by
1060 * the user-level SA generation program (e.g., setkey or racoon).
1061 * @secid contains the secid from which to take the mls portion of the context.
1062 * Allocate a security structure to the x->security field; the security
1063 * field is initialized to NULL when the xfrm_state is allocated. Set the
1064 * context to correspond to either sec_ctx or polsec, with the mls portion
1065 * taken from secid in the latter case.
1066 * Return 0 if operation was successful (memory to allocate, legal context).
1067 * @xfrm_state_free_security:
1068 * @x contains the xfrm_state.
1069 * Deallocate x->security.
1070 * @xfrm_state_delete_security:
1071 * @x contains the xfrm_state.
1072 * Authorize deletion of x->security.
1073 * @xfrm_policy_lookup:
1074 * @ctx contains the xfrm_sec_ctx for which the access control is being
1076 * @fl_secid contains the flow security label that is used to authorize
1077 * access to the policy xp.
1078 * @dir contains the direction of the flow (input or output).
1079 * Check permission when a flow selects a xfrm_policy for processing
1080 * XFRMs on a packet. The hook is called when selecting either a
1081 * per-socket policy or a generic xfrm policy.
1082 * Return 0 if permission is granted, -ESRCH otherwise, or -errno
1084 * @xfrm_state_pol_flow_match:
1085 * @x contains the state to match.
1086 * @xp contains the policy to check for a match.
1087 * @fl contains the flow to check for a match.
1088 * Return 1 if there is a match.
1089 * @xfrm_decode_session:
1090 * @skb points to skb to decode.
1091 * @secid points to the flow key secid to set.
1092 * @ckall says if all xfrms used should be checked for same secid.
1093 * Return 0 if ckall is zero or all xfrms used have the same secid.
1095 * Security hooks affecting all Key Management operations
1098 * Permit allocation of a key and assign security data. Note that key does
1099 * not have a serial number assigned at this point.
1100 * @key points to the key.
1101 * @flags is the allocation flags
1102 * Return 0 if permission is granted, -ve error otherwise.
1104 * Notification of destruction; free security data.
1105 * @key points to the key.
1108 * See whether a specific operational right is granted to a process on a
1110 * @key_ref refers to the key (key pointer + possession attribute bit).
1111 * @cred points to the credentials to provide the context against which to
1112 * evaluate the security data on the key.
1113 * @perm describes the combination of permissions required of this key.
1114 * Return 1 if permission granted, 0 if permission denied and -ve it the
1115 * normal permissions model should be effected.
1117 * Get a textual representation of the security context attached to a key
1118 * for the purposes of honouring KEYCTL_GETSECURITY. This function
1119 * allocates the storage for the NUL-terminated string and the caller
1121 * @key points to the key to be queried.
1122 * @_buffer points to a pointer that should be set to point to the
1123 * resulting string (if no label or an error occurs).
1124 * Return the length of the string (including terminating NUL) or -ve if
1126 * May also return 0 (and a NULL buffer pointer) if there is no label.
1127 * @key_session_to_parent:
1128 * Forcibly assign the session keyring from a process to its parent
1130 * @cred: Pointer to process's credentials
1131 * @parent_cred: Pointer to parent process's credentials
1132 * @keyring: Proposed new session keyring
1133 * Return 0 if permission is granted, -ve error otherwise.
1135 * Security hooks affecting all System V IPC operations.
1138 * Check permissions for access to IPC
1139 * @ipcp contains the kernel IPC permission structure
1140 * @flag contains the desired (requested) permission set
1141 * Return 0 if permission is granted.
1143 * Get the secid associated with the ipc object.
1144 * @ipcp contains the kernel IPC permission structure.
1145 * @secid contains a pointer to the location where result will be saved.
1146 * In case of failure, @secid will be set to zero.
1148 * Security hooks for individual messages held in System V IPC message queues
1149 * @msg_msg_alloc_security:
1150 * Allocate and attach a security structure to the msg->security field.
1151 * The security field is initialized to NULL when the structure is first
1153 * @msg contains the message structure to be modified.
1154 * Return 0 if operation was successful and permission is granted.
1155 * @msg_msg_free_security:
1156 * Deallocate the security structure for this message.
1157 * @msg contains the message structure to be modified.
1159 * Security hooks for System V IPC Message Queues
1161 * @msg_queue_alloc_security:
1162 * Allocate and attach a security structure to the
1163 * msq->q_perm.security field. The security field is initialized to
1164 * NULL when the structure is first created.
1165 * @msq contains the message queue structure to be modified.
1166 * Return 0 if operation was successful and permission is granted.
1167 * @msg_queue_free_security:
1168 * Deallocate security structure for this message queue.
1169 * @msq contains the message queue structure to be modified.
1170 * @msg_queue_associate:
1171 * Check permission when a message queue is requested through the
1172 * msgget system call. This hook is only called when returning the
1173 * message queue identifier for an existing message queue, not when a
1174 * new message queue is created.
1175 * @msq contains the message queue to act upon.
1176 * @msqflg contains the operation control flags.
1177 * Return 0 if permission is granted.
1178 * @msg_queue_msgctl:
1179 * Check permission when a message control operation specified by @cmd
1180 * is to be performed on the message queue @msq.
1181 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
1182 * @msq contains the message queue to act upon. May be NULL.
1183 * @cmd contains the operation to be performed.
1184 * Return 0 if permission is granted.
1185 * @msg_queue_msgsnd:
1186 * Check permission before a message, @msg, is enqueued on the message
1188 * @msq contains the message queue to send message to.
1189 * @msg contains the message to be enqueued.
1190 * @msqflg contains operational flags.
1191 * Return 0 if permission is granted.
1192 * @msg_queue_msgrcv:
1193 * Check permission before a message, @msg, is removed from the message
1194 * queue, @msq. The @target task structure contains a pointer to the
1195 * process that will be receiving the message (not equal to the current
1196 * process when inline receives are being performed).
1197 * @msq contains the message queue to retrieve message from.
1198 * @msg contains the message destination.
1199 * @target contains the task structure for recipient process.
1200 * @type contains the type of message requested.
1201 * @mode contains the operational flags.
1202 * Return 0 if permission is granted.
1204 * Security hooks for System V Shared Memory Segments
1206 * @shm_alloc_security:
1207 * Allocate and attach a security structure to the shp->shm_perm.security
1208 * field. The security field is initialized to NULL when the structure is
1210 * @shp contains the shared memory structure to be modified.
1211 * Return 0 if operation was successful and permission is granted.
1212 * @shm_free_security:
1213 * Deallocate the security struct for this memory segment.
1214 * @shp contains the shared memory structure to be modified.
1216 * Check permission when a shared memory region is requested through the
1217 * shmget system call. This hook is only called when returning the shared
1218 * memory region identifier for an existing region, not when a new shared
1219 * memory region is created.
1220 * @shp contains the shared memory structure to be modified.
1221 * @shmflg contains the operation control flags.
1222 * Return 0 if permission is granted.
1224 * Check permission when a shared memory control operation specified by
1225 * @cmd is to be performed on the shared memory region @shp.
1226 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1227 * @shp contains shared memory structure to be modified.
1228 * @cmd contains the operation to be performed.
1229 * Return 0 if permission is granted.
1231 * Check permissions prior to allowing the shmat system call to attach the
1232 * shared memory segment @shp to the data segment of the calling process.
1233 * The attaching address is specified by @shmaddr.
1234 * @shp contains the shared memory structure to be modified.
1235 * @shmaddr contains the address to attach memory region to.
1236 * @shmflg contains the operational flags.
1237 * Return 0 if permission is granted.
1239 * Security hooks for System V Semaphores
1241 * @sem_alloc_security:
1242 * Allocate and attach a security structure to the sma->sem_perm.security
1243 * field. The security field is initialized to NULL when the structure is
1245 * @sma contains the semaphore structure
1246 * Return 0 if operation was successful and permission is granted.
1247 * @sem_free_security:
1248 * deallocate security struct for this semaphore
1249 * @sma contains the semaphore structure.
1251 * Check permission when a semaphore is requested through the semget
1252 * system call. This hook is only called when returning the semaphore
1253 * identifier for an existing semaphore, not when a new one must be
1255 * @sma contains the semaphore structure.
1256 * @semflg contains the operation control flags.
1257 * Return 0 if permission is granted.
1259 * Check permission when a semaphore operation specified by @cmd is to be
1260 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
1261 * IPC_INFO or SEM_INFO.
1262 * @sma contains the semaphore structure. May be NULL.
1263 * @cmd contains the operation to be performed.
1264 * Return 0 if permission is granted.
1266 * Check permissions before performing operations on members of the
1267 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1269 * @sma contains the semaphore structure.
1270 * @sops contains the operations to perform.
1271 * @nsops contains the number of operations to perform.
1272 * @alter contains the flag indicating whether changes are to be made.
1273 * Return 0 if permission is granted.
1275 * @ptrace_access_check:
1276 * Check permission before allowing the current process to trace the
1278 * Security modules may also want to perform a process tracing check
1279 * during an execve in the set_security or apply_creds hooks of
1280 * tracing check during an execve in the bprm_set_creds hook of
1281 * binprm_security_ops if the process is being traced and its security
1282 * attributes would be changed by the execve.
1283 * @child contains the task_struct structure for the target process.
1284 * @mode contains the PTRACE_MODE flags indicating the form of access.
1285 * Return 0 if permission is granted.
1287 * Check that the @parent process has sufficient permission to trace the
1288 * current process before allowing the current process to present itself
1289 * to the @parent process for tracing.
1290 * The parent process will still have to undergo the ptrace_access_check
1291 * checks before it is allowed to trace this one.
1292 * @parent contains the task_struct structure for debugger process.
1293 * Return 0 if permission is granted.
1295 * Get the @effective, @inheritable, and @permitted capability sets for
1296 * the @target process. The hook may also perform permission checking to
1297 * determine if the current process is allowed to see the capability sets
1298 * of the @target process.
1299 * @target contains the task_struct structure for target process.
1300 * @effective contains the effective capability set.
1301 * @inheritable contains the inheritable capability set.
1302 * @permitted contains the permitted capability set.
1303 * Return 0 if the capability sets were successfully obtained.
1305 * Set the @effective, @inheritable, and @permitted capability sets for
1306 * the current process.
1307 * @new contains the new credentials structure for target process.
1308 * @old contains the current credentials structure for target process.
1309 * @effective contains the effective capability set.
1310 * @inheritable contains the inheritable capability set.
1311 * @permitted contains the permitted capability set.
1312 * Return 0 and update @new if permission is granted.
1314 * Check whether the @tsk process has the @cap capability in the indicated
1316 * @tsk contains the task_struct for the process.
1317 * @cred contains the credentials to use.
1318 * @cap contains the capability <include/linux/capability.h>.
1319 * @audit: Whether to write an audit message or not
1320 * Return 0 if the capability is granted for @tsk.
1322 * Check permission before enabling or disabling process accounting. If
1323 * accounting is being enabled, then @file refers to the open file used to
1324 * store accounting records. If accounting is being disabled, then @file
1326 * @file contains the file structure for the accounting file (may be NULL).
1327 * Return 0 if permission is granted.
1329 * Check permission before accessing the @table sysctl variable in the
1330 * manner specified by @op.
1331 * @table contains the ctl_table structure for the sysctl variable.
1332 * @op contains the operation (001 = search, 002 = write, 004 = read).
1333 * Return 0 if permission is granted.
1335 * Check permission before accessing the kernel message ring or changing
1336 * logging to the console.
1337 * See the syslog(2) manual page for an explanation of the @type values.
1338 * @type contains the type of action.
1339 * Return 0 if permission is granted.
1341 * Check permission to change the system time.
1342 * struct timespec and timezone are defined in include/linux/time.h
1343 * @ts contains new time
1344 * @tz contains new timezone
1345 * Return 0 if permission is granted.
1346 * @vm_enough_memory:
1347 * Check permissions for allocating a new virtual mapping.
1348 * @mm contains the mm struct it is being added to.
1349 * @pages contains the number of pages.
1350 * Return 0 if permission is granted.
1353 * Convert secid to security context.
1354 * @secid contains the security ID.
1355 * @secdata contains the pointer that stores the converted security context.
1357 * Convert security context to secid.
1358 * @secid contains the pointer to the generated security ID.
1359 * @secdata contains the security context.
1362 * Release the security context.
1363 * @secdata contains the security context.
1364 * @seclen contains the length of the security context.
1366 * Security hooks for Audit
1369 * Allocate and initialize an LSM audit rule structure.
1370 * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
1371 * @op contains the operator the rule uses.
1372 * @rulestr contains the context where the rule will be applied to.
1373 * @lsmrule contains a pointer to receive the result.
1374 * Return 0 if @lsmrule has been successfully set,
1375 * -EINVAL in case of an invalid rule.
1377 * @audit_rule_known:
1378 * Specifies whether given @rule contains any fields related to current LSM.
1379 * @rule contains the audit rule of interest.
1380 * Return 1 in case of relation found, 0 otherwise.
1382 * @audit_rule_match:
1383 * Determine if given @secid matches a rule previously approved
1384 * by @audit_rule_known.
1385 * @secid contains the security id in question.
1386 * @field contains the field which relates to current LSM.
1387 * @op contains the operator that will be used for matching.
1388 * @rule points to the audit rule that will be checked against.
1389 * @actx points to the audit context associated with the check.
1390 * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
1393 * Deallocate the LSM audit rule structure previously allocated by
1395 * @rule contains the allocated rule
1397 * @inode_notifysecctx:
1398 * Notify the security module of what the security context of an inode
1399 * should be. Initializes the incore security context managed by the
1400 * security module for this inode. Example usage: NFS client invokes
1401 * this hook to initialize the security context in its incore inode to the
1402 * value provided by the server for the file when the server returned the
1403 * file's attributes to the client.
1405 * Must be called with inode->i_mutex locked.
1407 * @inode we wish to set the security context of.
1408 * @ctx contains the string which we wish to set in the inode.
1409 * @ctxlen contains the length of @ctx.
1412 * Change the security context of an inode. Updates the
1413 * incore security context managed by the security module and invokes the
1414 * fs code as needed (via __vfs_setxattr_noperm) to update any backing
1415 * xattrs that represent the context. Example usage: NFS server invokes
1416 * this hook to change the security context in its incore inode and on the
1417 * backing filesystem to a value provided by the client on a SETATTR
1420 * Must be called with inode->i_mutex locked.
1422 * @dentry contains the inode we wish to set the security context of.
1423 * @ctx contains the string which we wish to set in the inode.
1424 * @ctxlen contains the length of @ctx.
1427 * Returns a string containing all relavent security context information
1429 * @inode we wish to set the security context of.
1430 * @ctx is a pointer in which to place the allocated security context.
1431 * @ctxlen points to the place to put the length of @ctx.
1432 * This is the main security structure.
1434 struct security_operations {
1435 char name[SECURITY_NAME_MAX + 1];
1437 int (*ptrace_access_check) (struct task_struct *child, unsigned int mode);
1438 int (*ptrace_traceme) (struct task_struct *parent);
1439 int (*capget) (struct task_struct *target,
1440 kernel_cap_t *effective,
1441 kernel_cap_t *inheritable, kernel_cap_t *permitted);
1442 int (*capset) (struct cred *new,
1443 const struct cred *old,
1444 const kernel_cap_t *effective,
1445 const kernel_cap_t *inheritable,
1446 const kernel_cap_t *permitted);
1447 int (*capable) (struct task_struct *tsk, const struct cred *cred,
1448 int cap, int audit);
1449 int (*acct) (struct file *file);
1450 int (*sysctl) (struct ctl_table *table, int op);
1451 int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
1452 int (*quota_on) (struct dentry *dentry);
1453 int (*syslog) (int type);
1454 int (*settime) (struct timespec *ts, struct timezone *tz);
1455 int (*vm_enough_memory) (struct mm_struct *mm, long pages);
1457 int (*bprm_set_creds) (struct linux_binprm *bprm);
1458 int (*bprm_check_security) (struct linux_binprm *bprm);
1459 int (*bprm_secureexec) (struct linux_binprm *bprm);
1460 void (*bprm_committing_creds) (struct linux_binprm *bprm);
1461 void (*bprm_committed_creds) (struct linux_binprm *bprm);
1463 int (*sb_alloc_security) (struct super_block *sb);
1464 void (*sb_free_security) (struct super_block *sb);
1465 int (*sb_copy_data) (char *orig, char *copy);
1466 int (*sb_kern_mount) (struct super_block *sb, int flags, void *data);
1467 int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
1468 int (*sb_statfs) (struct dentry *dentry);
1469 int (*sb_mount) (char *dev_name, struct path *path,
1470 char *type, unsigned long flags, void *data);
1471 int (*sb_check_sb) (struct vfsmount *mnt, struct path *path);
1472 int (*sb_umount) (struct vfsmount *mnt, int flags);
1473 void (*sb_umount_close) (struct vfsmount *mnt);
1474 void (*sb_umount_busy) (struct vfsmount *mnt);
1475 void (*sb_post_remount) (struct vfsmount *mnt,
1476 unsigned long flags, void *data);
1477 void (*sb_post_addmount) (struct vfsmount *mnt,
1478 struct path *mountpoint);
1479 int (*sb_pivotroot) (struct path *old_path,
1480 struct path *new_path);
1481 void (*sb_post_pivotroot) (struct path *old_path,
1482 struct path *new_path);
1483 int (*sb_set_mnt_opts) (struct super_block *sb,
1484 struct security_mnt_opts *opts);
1485 void (*sb_clone_mnt_opts) (const struct super_block *oldsb,
1486 struct super_block *newsb);
1487 int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
1489 #ifdef CONFIG_SECURITY_PATH
1490 int (*path_unlink) (struct path *dir, struct dentry *dentry);
1491 int (*path_mkdir) (struct path *dir, struct dentry *dentry, int mode);
1492 int (*path_rmdir) (struct path *dir, struct dentry *dentry);
1493 int (*path_mknod) (struct path *dir, struct dentry *dentry, int mode,
1495 int (*path_truncate) (struct path *path, loff_t length,
1496 unsigned int time_attrs);
1497 int (*path_symlink) (struct path *dir, struct dentry *dentry,
1498 const char *old_name);
1499 int (*path_link) (struct dentry *old_dentry, struct path *new_dir,
1500 struct dentry *new_dentry);
1501 int (*path_rename) (struct path *old_dir, struct dentry *old_dentry,
1502 struct path *new_dir, struct dentry *new_dentry);
1503 int (*path_chmod) (struct dentry *dentry, struct vfsmount *mnt,
1505 int (*path_chown) (struct path *path, uid_t uid, gid_t gid);
1508 int (*inode_alloc_security) (struct inode *inode);
1509 void (*inode_free_security) (struct inode *inode);
1510 int (*inode_init_security) (struct inode *inode, struct inode *dir,
1511 char **name, void **value, size_t *len);
1512 int (*inode_create) (struct inode *dir,
1513 struct dentry *dentry, int mode);
1514 int (*inode_link) (struct dentry *old_dentry,
1515 struct inode *dir, struct dentry *new_dentry);
1516 int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
1517 int (*inode_symlink) (struct inode *dir,
1518 struct dentry *dentry, const char *old_name);
1519 int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, int mode);
1520 int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
1521 int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
1522 int mode, dev_t dev);
1523 int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
1524 struct inode *new_dir, struct dentry *new_dentry);
1525 int (*inode_readlink) (struct dentry *dentry);
1526 int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
1527 int (*inode_permission) (struct inode *inode, int mask);
1528 int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
1529 int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
1530 void (*inode_delete) (struct inode *inode);
1531 int (*inode_setxattr) (struct dentry *dentry, const char *name,
1532 const void *value, size_t size, int flags);
1533 void (*inode_post_setxattr) (struct dentry *dentry, const char *name,
1534 const void *value, size_t size, int flags);
1535 int (*inode_getxattr) (struct dentry *dentry, const char *name);
1536 int (*inode_listxattr) (struct dentry *dentry);
1537 int (*inode_removexattr) (struct dentry *dentry, const char *name);
1538 int (*inode_need_killpriv) (struct dentry *dentry);
1539 int (*inode_killpriv) (struct dentry *dentry);
1540 int (*inode_getsecurity) (const struct inode *inode, const char *name, void **buffer, bool alloc);
1541 int (*inode_setsecurity) (struct inode *inode, const char *name, const void *value, size_t size, int flags);
1542 int (*inode_listsecurity) (struct inode *inode, char *buffer, size_t buffer_size);
1543 void (*inode_getsecid) (const struct inode *inode, u32 *secid);
1545 int (*file_permission) (struct file *file, int mask);
1546 int (*file_alloc_security) (struct file *file);
1547 void (*file_free_security) (struct file *file);
1548 int (*file_ioctl) (struct file *file, unsigned int cmd,
1550 int (*file_mmap) (struct file *file,
1551 unsigned long reqprot, unsigned long prot,
1552 unsigned long flags, unsigned long addr,
1553 unsigned long addr_only);
1554 int (*file_mprotect) (struct vm_area_struct *vma,
1555 unsigned long reqprot,
1556 unsigned long prot);
1557 int (*file_lock) (struct file *file, unsigned int cmd);
1558 int (*file_fcntl) (struct file *file, unsigned int cmd,
1560 int (*file_set_fowner) (struct file *file);
1561 int (*file_send_sigiotask) (struct task_struct *tsk,
1562 struct fown_struct *fown, int sig);
1563 int (*file_receive) (struct file *file);
1564 int (*dentry_open) (struct file *file, const struct cred *cred);
1566 int (*task_create) (unsigned long clone_flags);
1567 int (*cred_alloc_blank) (struct cred *cred, gfp_t gfp);
1568 void (*cred_free) (struct cred *cred);
1569 int (*cred_prepare)(struct cred *new, const struct cred *old,
1571 void (*cred_commit)(struct cred *new, const struct cred *old);
1572 void (*cred_transfer)(struct cred *new, const struct cred *old);
1573 int (*kernel_act_as)(struct cred *new, u32 secid);
1574 int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
1575 int (*kernel_module_request)(void);
1576 int (*task_setuid) (uid_t id0, uid_t id1, uid_t id2, int flags);
1577 int (*task_fix_setuid) (struct cred *new, const struct cred *old,
1579 int (*task_setgid) (gid_t id0, gid_t id1, gid_t id2, int flags);
1580 int (*task_setpgid) (struct task_struct *p, pid_t pgid);
1581 int (*task_getpgid) (struct task_struct *p);
1582 int (*task_getsid) (struct task_struct *p);
1583 void (*task_getsecid) (struct task_struct *p, u32 *secid);
1584 int (*task_setgroups) (struct group_info *group_info);
1585 int (*task_setnice) (struct task_struct *p, int nice);
1586 int (*task_setioprio) (struct task_struct *p, int ioprio);
1587 int (*task_getioprio) (struct task_struct *p);
1588 int (*task_setrlimit) (unsigned int resource, struct rlimit *new_rlim);
1589 int (*task_setscheduler) (struct task_struct *p, int policy,
1590 struct sched_param *lp);
1591 int (*task_getscheduler) (struct task_struct *p);
1592 int (*task_movememory) (struct task_struct *p);
1593 int (*task_kill) (struct task_struct *p,
1594 struct siginfo *info, int sig, u32 secid);
1595 int (*task_wait) (struct task_struct *p);
1596 int (*task_prctl) (int option, unsigned long arg2,
1597 unsigned long arg3, unsigned long arg4,
1598 unsigned long arg5);
1599 void (*task_to_inode) (struct task_struct *p, struct inode *inode);
1601 int (*ipc_permission) (struct kern_ipc_perm *ipcp, short flag);
1602 void (*ipc_getsecid) (struct kern_ipc_perm *ipcp, u32 *secid);
1604 int (*msg_msg_alloc_security) (struct msg_msg *msg);
1605 void (*msg_msg_free_security) (struct msg_msg *msg);
1607 int (*msg_queue_alloc_security) (struct msg_queue *msq);
1608 void (*msg_queue_free_security) (struct msg_queue *msq);
1609 int (*msg_queue_associate) (struct msg_queue *msq, int msqflg);
1610 int (*msg_queue_msgctl) (struct msg_queue *msq, int cmd);
1611 int (*msg_queue_msgsnd) (struct msg_queue *msq,
1612 struct msg_msg *msg, int msqflg);
1613 int (*msg_queue_msgrcv) (struct msg_queue *msq,
1614 struct msg_msg *msg,
1615 struct task_struct *target,
1616 long type, int mode);
1618 int (*shm_alloc_security) (struct shmid_kernel *shp);
1619 void (*shm_free_security) (struct shmid_kernel *shp);
1620 int (*shm_associate) (struct shmid_kernel *shp, int shmflg);
1621 int (*shm_shmctl) (struct shmid_kernel *shp, int cmd);
1622 int (*shm_shmat) (struct shmid_kernel *shp,
1623 char __user *shmaddr, int shmflg);
1625 int (*sem_alloc_security) (struct sem_array *sma);
1626 void (*sem_free_security) (struct sem_array *sma);
1627 int (*sem_associate) (struct sem_array *sma, int semflg);
1628 int (*sem_semctl) (struct sem_array *sma, int cmd);
1629 int (*sem_semop) (struct sem_array *sma,
1630 struct sembuf *sops, unsigned nsops, int alter);
1632 int (*netlink_send) (struct sock *sk, struct sk_buff *skb);
1633 int (*netlink_recv) (struct sk_buff *skb, int cap);
1635 void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1637 int (*getprocattr) (struct task_struct *p, char *name, char **value);
1638 int (*setprocattr) (struct task_struct *p, char *name, void *value, size_t size);
1639 int (*secid_to_secctx) (u32 secid, char **secdata, u32 *seclen);
1640 int (*secctx_to_secid) (const char *secdata, u32 seclen, u32 *secid);
1641 void (*release_secctx) (char *secdata, u32 seclen);
1643 int (*inode_notifysecctx)(struct inode *inode, void *ctx, u32 ctxlen);
1644 int (*inode_setsecctx)(struct dentry *dentry, void *ctx, u32 ctxlen);
1645 int (*inode_getsecctx)(struct inode *inode, void **ctx, u32 *ctxlen);
1647 #ifdef CONFIG_SECURITY_NETWORK
1648 int (*unix_stream_connect) (struct socket *sock,
1649 struct socket *other, struct sock *newsk);
1650 int (*unix_may_send) (struct socket *sock, struct socket *other);
1652 int (*socket_create) (int family, int type, int protocol, int kern);
1653 int (*socket_post_create) (struct socket *sock, int family,
1654 int type, int protocol, int kern);
1655 int (*socket_bind) (struct socket *sock,
1656 struct sockaddr *address, int addrlen);
1657 int (*socket_connect) (struct socket *sock,
1658 struct sockaddr *address, int addrlen);
1659 int (*socket_listen) (struct socket *sock, int backlog);
1660 int (*socket_accept) (struct socket *sock, struct socket *newsock);
1661 int (*socket_sendmsg) (struct socket *sock,
1662 struct msghdr *msg, int size);
1663 int (*socket_recvmsg) (struct socket *sock,
1664 struct msghdr *msg, int size, int flags);
1665 int (*socket_getsockname) (struct socket *sock);
1666 int (*socket_getpeername) (struct socket *sock);
1667 int (*socket_getsockopt) (struct socket *sock, int level, int optname);
1668 int (*socket_setsockopt) (struct socket *sock, int level, int optname);
1669 int (*socket_shutdown) (struct socket *sock, int how);
1670 int (*socket_sock_rcv_skb) (struct sock *sk, struct sk_buff *skb);
1671 int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
1672 int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
1673 int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
1674 void (*sk_free_security) (struct sock *sk);
1675 void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
1676 void (*sk_getsecid) (struct sock *sk, u32 *secid);
1677 void (*sock_graft) (struct sock *sk, struct socket *parent);
1678 int (*inet_conn_request) (struct sock *sk, struct sk_buff *skb,
1679 struct request_sock *req);
1680 void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req);
1681 void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb);
1682 void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
1683 int (*tun_dev_create)(void);
1684 void (*tun_dev_post_create)(struct sock *sk);
1685 int (*tun_dev_attach)(struct sock *sk);
1686 #endif /* CONFIG_SECURITY_NETWORK */
1688 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1689 int (*xfrm_policy_alloc_security) (struct xfrm_sec_ctx **ctxp,
1690 struct xfrm_user_sec_ctx *sec_ctx);
1691 int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
1692 void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
1693 int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
1694 int (*xfrm_state_alloc_security) (struct xfrm_state *x,
1695 struct xfrm_user_sec_ctx *sec_ctx,
1697 void (*xfrm_state_free_security) (struct xfrm_state *x);
1698 int (*xfrm_state_delete_security) (struct xfrm_state *x);
1699 int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1700 int (*xfrm_state_pol_flow_match) (struct xfrm_state *x,
1701 struct xfrm_policy *xp,
1703 int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall);
1704 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1706 /* key management security hooks */
1708 int (*key_alloc) (struct key *key, const struct cred *cred, unsigned long flags);
1709 void (*key_free) (struct key *key);
1710 int (*key_permission) (key_ref_t key_ref,
1711 const struct cred *cred,
1713 int (*key_getsecurity)(struct key *key, char **_buffer);
1714 int (*key_session_to_parent)(const struct cred *cred,
1715 const struct cred *parent_cred,
1717 #endif /* CONFIG_KEYS */
1720 int (*audit_rule_init) (u32 field, u32 op, char *rulestr, void **lsmrule);
1721 int (*audit_rule_known) (struct audit_krule *krule);
1722 int (*audit_rule_match) (u32 secid, u32 field, u32 op, void *lsmrule,
1723 struct audit_context *actx);
1724 void (*audit_rule_free) (void *lsmrule);
1725 #endif /* CONFIG_AUDIT */
1729 extern int security_init(void);
1730 extern int security_module_enable(struct security_operations *ops);
1731 extern int register_security(struct security_operations *ops);
1733 /* Security operations */
1734 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
1735 int security_ptrace_traceme(struct task_struct *parent);
1736 int security_capget(struct task_struct *target,
1737 kernel_cap_t *effective,
1738 kernel_cap_t *inheritable,
1739 kernel_cap_t *permitted);
1740 int security_capset(struct cred *new, const struct cred *old,
1741 const kernel_cap_t *effective,
1742 const kernel_cap_t *inheritable,
1743 const kernel_cap_t *permitted);
1744 int security_capable(int cap);
1745 int security_real_capable(struct task_struct *tsk, int cap);
1746 int security_real_capable_noaudit(struct task_struct *tsk, int cap);
1747 int security_acct(struct file *file);
1748 int security_sysctl(struct ctl_table *table, int op);
1749 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
1750 int security_quota_on(struct dentry *dentry);
1751 int security_syslog(int type);
1752 int security_settime(struct timespec *ts, struct timezone *tz);
1753 int security_vm_enough_memory(long pages);
1754 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
1755 int security_vm_enough_memory_kern(long pages);
1756 int security_bprm_set_creds(struct linux_binprm *bprm);
1757 int security_bprm_check(struct linux_binprm *bprm);
1758 void security_bprm_committing_creds(struct linux_binprm *bprm);
1759 void security_bprm_committed_creds(struct linux_binprm *bprm);
1760 int security_bprm_secureexec(struct linux_binprm *bprm);
1761 int security_sb_alloc(struct super_block *sb);
1762 void security_sb_free(struct super_block *sb);
1763 int security_sb_copy_data(char *orig, char *copy);
1764 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
1765 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
1766 int security_sb_statfs(struct dentry *dentry);
1767 int security_sb_mount(char *dev_name, struct path *path,
1768 char *type, unsigned long flags, void *data);
1769 int security_sb_check_sb(struct vfsmount *mnt, struct path *path);
1770 int security_sb_umount(struct vfsmount *mnt, int flags);
1771 void security_sb_umount_close(struct vfsmount *mnt);
1772 void security_sb_umount_busy(struct vfsmount *mnt);
1773 void security_sb_post_remount(struct vfsmount *mnt, unsigned long flags, void *data);
1774 void security_sb_post_addmount(struct vfsmount *mnt, struct path *mountpoint);
1775 int security_sb_pivotroot(struct path *old_path, struct path *new_path);
1776 void security_sb_post_pivotroot(struct path *old_path, struct path *new_path);
1777 int security_sb_set_mnt_opts(struct super_block *sb, struct security_mnt_opts *opts);
1778 void security_sb_clone_mnt_opts(const struct super_block *oldsb,
1779 struct super_block *newsb);
1780 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
1782 int security_inode_alloc(struct inode *inode);
1783 void security_inode_free(struct inode *inode);
1784 int security_inode_init_security(struct inode *inode, struct inode *dir,
1785 char **name, void **value, size_t *len);
1786 int security_inode_create(struct inode *dir, struct dentry *dentry, int mode);
1787 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1788 struct dentry *new_dentry);
1789 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
1790 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
1791 const char *old_name);
1792 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode);
1793 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
1794 int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev);
1795 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
1796 struct inode *new_dir, struct dentry *new_dentry);
1797 int security_inode_readlink(struct dentry *dentry);
1798 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
1799 int security_inode_permission(struct inode *inode, int mask);
1800 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
1801 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
1802 void security_inode_delete(struct inode *inode);
1803 int security_inode_setxattr(struct dentry *dentry, const char *name,
1804 const void *value, size_t size, int flags);
1805 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1806 const void *value, size_t size, int flags);
1807 int security_inode_getxattr(struct dentry *dentry, const char *name);
1808 int security_inode_listxattr(struct dentry *dentry);
1809 int security_inode_removexattr(struct dentry *dentry, const char *name);
1810 int security_inode_need_killpriv(struct dentry *dentry);
1811 int security_inode_killpriv(struct dentry *dentry);
1812 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
1813 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1814 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
1815 void security_inode_getsecid(const struct inode *inode, u32 *secid);
1816 int security_file_permission(struct file *file, int mask);
1817 int security_file_alloc(struct file *file);
1818 void security_file_free(struct file *file);
1819 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
1820 int security_file_mmap(struct file *file, unsigned long reqprot,
1821 unsigned long prot, unsigned long flags,
1822 unsigned long addr, unsigned long addr_only);
1823 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1824 unsigned long prot);
1825 int security_file_lock(struct file *file, unsigned int cmd);
1826 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
1827 int security_file_set_fowner(struct file *file);
1828 int security_file_send_sigiotask(struct task_struct *tsk,
1829 struct fown_struct *fown, int sig);
1830 int security_file_receive(struct file *file);
1831 int security_dentry_open(struct file *file, const struct cred *cred);
1832 int security_task_create(unsigned long clone_flags);
1833 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
1834 void security_cred_free(struct cred *cred);
1835 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
1836 void security_commit_creds(struct cred *new, const struct cred *old);
1837 void security_transfer_creds(struct cred *new, const struct cred *old);
1838 int security_kernel_act_as(struct cred *new, u32 secid);
1839 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
1840 int security_kernel_module_request(void);
1841 int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags);
1842 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1844 int security_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags);
1845 int security_task_setpgid(struct task_struct *p, pid_t pgid);
1846 int security_task_getpgid(struct task_struct *p);
1847 int security_task_getsid(struct task_struct *p);
1848 void security_task_getsecid(struct task_struct *p, u32 *secid);
1849 int security_task_setgroups(struct group_info *group_info);
1850 int security_task_setnice(struct task_struct *p, int nice);
1851 int security_task_setioprio(struct task_struct *p, int ioprio);
1852 int security_task_getioprio(struct task_struct *p);
1853 int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim);
1854 int security_task_setscheduler(struct task_struct *p,
1855 int policy, struct sched_param *lp);
1856 int security_task_getscheduler(struct task_struct *p);
1857 int security_task_movememory(struct task_struct *p);
1858 int security_task_kill(struct task_struct *p, struct siginfo *info,
1859 int sig, u32 secid);
1860 int security_task_wait(struct task_struct *p);
1861 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1862 unsigned long arg4, unsigned long arg5);
1863 void security_task_to_inode(struct task_struct *p, struct inode *inode);
1864 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
1865 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
1866 int security_msg_msg_alloc(struct msg_msg *msg);
1867 void security_msg_msg_free(struct msg_msg *msg);
1868 int security_msg_queue_alloc(struct msg_queue *msq);
1869 void security_msg_queue_free(struct msg_queue *msq);
1870 int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
1871 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
1872 int security_msg_queue_msgsnd(struct msg_queue *msq,
1873 struct msg_msg *msg, int msqflg);
1874 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1875 struct task_struct *target, long type, int mode);
1876 int security_shm_alloc(struct shmid_kernel *shp);
1877 void security_shm_free(struct shmid_kernel *shp);
1878 int security_shm_associate(struct shmid_kernel *shp, int shmflg);
1879 int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
1880 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
1881 int security_sem_alloc(struct sem_array *sma);
1882 void security_sem_free(struct sem_array *sma);
1883 int security_sem_associate(struct sem_array *sma, int semflg);
1884 int security_sem_semctl(struct sem_array *sma, int cmd);
1885 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1886 unsigned nsops, int alter);
1887 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
1888 int security_getprocattr(struct task_struct *p, char *name, char **value);
1889 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
1890 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
1891 int security_netlink_recv(struct sk_buff *skb, int cap);
1892 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
1893 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
1894 void security_release_secctx(char *secdata, u32 seclen);
1896 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
1897 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
1898 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
1899 #else /* CONFIG_SECURITY */
1900 struct security_mnt_opts {
1903 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
1907 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
1912 * This is the default capabilities functionality. Most of these functions
1913 * are just stubbed out, but a few must call the proper capable code.
1916 static inline int security_init(void)
1921 static inline int security_ptrace_access_check(struct task_struct *child,
1924 return cap_ptrace_access_check(child, mode);
1927 static inline int security_ptrace_traceme(struct task_struct *parent)
1929 return cap_ptrace_traceme(parent);
1932 static inline int security_capget(struct task_struct *target,
1933 kernel_cap_t *effective,
1934 kernel_cap_t *inheritable,
1935 kernel_cap_t *permitted)
1937 return cap_capget(target, effective, inheritable, permitted);
1940 static inline int security_capset(struct cred *new,
1941 const struct cred *old,
1942 const kernel_cap_t *effective,
1943 const kernel_cap_t *inheritable,
1944 const kernel_cap_t *permitted)
1946 return cap_capset(new, old, effective, inheritable, permitted);
1949 static inline int security_capable(int cap)
1951 return cap_capable(current, current_cred(), cap, SECURITY_CAP_AUDIT);
1954 static inline int security_real_capable(struct task_struct *tsk, int cap)
1959 ret = cap_capable(tsk, __task_cred(tsk), cap, SECURITY_CAP_AUDIT);
1965 int security_real_capable_noaudit(struct task_struct *tsk, int cap)
1970 ret = cap_capable(tsk, __task_cred(tsk), cap,
1971 SECURITY_CAP_NOAUDIT);
1976 static inline int security_acct(struct file *file)
1981 static inline int security_sysctl(struct ctl_table *table, int op)
1986 static inline int security_quotactl(int cmds, int type, int id,
1987 struct super_block *sb)
1992 static inline int security_quota_on(struct dentry *dentry)
1997 static inline int security_syslog(int type)
1999 return cap_syslog(type);
2002 static inline int security_settime(struct timespec *ts, struct timezone *tz)
2004 return cap_settime(ts, tz);
2007 static inline int security_vm_enough_memory(long pages)
2009 WARN_ON(current->mm == NULL);
2010 return cap_vm_enough_memory(current->mm, pages);
2013 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
2015 WARN_ON(mm == NULL);
2016 return cap_vm_enough_memory(mm, pages);
2019 static inline int security_vm_enough_memory_kern(long pages)
2021 /* If current->mm is a kernel thread then we will pass NULL,
2022 for this specific case that is fine */
2023 return cap_vm_enough_memory(current->mm, pages);
2026 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
2028 return cap_bprm_set_creds(bprm);
2031 static inline int security_bprm_check(struct linux_binprm *bprm)
2036 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
2040 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
2044 static inline int security_bprm_secureexec(struct linux_binprm *bprm)
2046 return cap_bprm_secureexec(bprm);
2049 static inline int security_sb_alloc(struct super_block *sb)
2054 static inline void security_sb_free(struct super_block *sb)
2057 static inline int security_sb_copy_data(char *orig, char *copy)
2062 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
2067 static inline int security_sb_show_options(struct seq_file *m,
2068 struct super_block *sb)
2073 static inline int security_sb_statfs(struct dentry *dentry)
2078 static inline int security_sb_mount(char *dev_name, struct path *path,
2079 char *type, unsigned long flags,
2085 static inline int security_sb_check_sb(struct vfsmount *mnt,
2091 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
2096 static inline void security_sb_umount_close(struct vfsmount *mnt)
2099 static inline void security_sb_umount_busy(struct vfsmount *mnt)
2102 static inline void security_sb_post_remount(struct vfsmount *mnt,
2103 unsigned long flags, void *data)
2106 static inline void security_sb_post_addmount(struct vfsmount *mnt,
2107 struct path *mountpoint)
2110 static inline int security_sb_pivotroot(struct path *old_path,
2111 struct path *new_path)
2116 static inline void security_sb_post_pivotroot(struct path *old_path,
2117 struct path *new_path)
2120 static inline int security_sb_set_mnt_opts(struct super_block *sb,
2121 struct security_mnt_opts *opts)
2126 static inline void security_sb_clone_mnt_opts(const struct super_block *oldsb,
2127 struct super_block *newsb)
2130 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
2135 static inline int security_inode_alloc(struct inode *inode)
2140 static inline void security_inode_free(struct inode *inode)
2143 static inline int security_inode_init_security(struct inode *inode,
2152 static inline int security_inode_create(struct inode *dir,
2153 struct dentry *dentry,
2159 static inline int security_inode_link(struct dentry *old_dentry,
2161 struct dentry *new_dentry)
2166 static inline int security_inode_unlink(struct inode *dir,
2167 struct dentry *dentry)
2172 static inline int security_inode_symlink(struct inode *dir,
2173 struct dentry *dentry,
2174 const char *old_name)
2179 static inline int security_inode_mkdir(struct inode *dir,
2180 struct dentry *dentry,
2186 static inline int security_inode_rmdir(struct inode *dir,
2187 struct dentry *dentry)
2192 static inline int security_inode_mknod(struct inode *dir,
2193 struct dentry *dentry,
2194 int mode, dev_t dev)
2199 static inline int security_inode_rename(struct inode *old_dir,
2200 struct dentry *old_dentry,
2201 struct inode *new_dir,
2202 struct dentry *new_dentry)
2207 static inline int security_inode_readlink(struct dentry *dentry)
2212 static inline int security_inode_follow_link(struct dentry *dentry,
2213 struct nameidata *nd)
2218 static inline int security_inode_permission(struct inode *inode, int mask)
2223 static inline int security_inode_setattr(struct dentry *dentry,
2229 static inline int security_inode_getattr(struct vfsmount *mnt,
2230 struct dentry *dentry)
2235 static inline void security_inode_delete(struct inode *inode)
2238 static inline int security_inode_setxattr(struct dentry *dentry,
2239 const char *name, const void *value, size_t size, int flags)
2241 return cap_inode_setxattr(dentry, name, value, size, flags);
2244 static inline void security_inode_post_setxattr(struct dentry *dentry,
2245 const char *name, const void *value, size_t size, int flags)
2248 static inline int security_inode_getxattr(struct dentry *dentry,
2254 static inline int security_inode_listxattr(struct dentry *dentry)
2259 static inline int security_inode_removexattr(struct dentry *dentry,
2262 return cap_inode_removexattr(dentry, name);
2265 static inline int security_inode_need_killpriv(struct dentry *dentry)
2267 return cap_inode_need_killpriv(dentry);
2270 static inline int security_inode_killpriv(struct dentry *dentry)
2272 return cap_inode_killpriv(dentry);
2275 static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
2280 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
2285 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
2290 static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
2295 static inline int security_file_permission(struct file *file, int mask)
2300 static inline int security_file_alloc(struct file *file)
2305 static inline void security_file_free(struct file *file)
2308 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
2314 static inline int security_file_mmap(struct file *file, unsigned long reqprot,
2316 unsigned long flags,
2318 unsigned long addr_only)
2320 return cap_file_mmap(file, reqprot, prot, flags, addr, addr_only);
2323 static inline int security_file_mprotect(struct vm_area_struct *vma,
2324 unsigned long reqprot,
2330 static inline int security_file_lock(struct file *file, unsigned int cmd)
2335 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
2341 static inline int security_file_set_fowner(struct file *file)
2346 static inline int security_file_send_sigiotask(struct task_struct *tsk,
2347 struct fown_struct *fown,
2353 static inline int security_file_receive(struct file *file)
2358 static inline int security_dentry_open(struct file *file,
2359 const struct cred *cred)
2364 static inline int security_task_create(unsigned long clone_flags)
2369 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
2374 static inline void security_cred_free(struct cred *cred)
2377 static inline int security_prepare_creds(struct cred *new,
2378 const struct cred *old,
2384 static inline void security_commit_creds(struct cred *new,
2385 const struct cred *old)
2389 static inline void security_transfer_creds(struct cred *new,
2390 const struct cred *old)
2394 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
2399 static inline int security_kernel_create_files_as(struct cred *cred,
2400 struct inode *inode)
2405 static inline int security_kernel_module_request(void)
2410 static inline int security_task_setuid(uid_t id0, uid_t id1, uid_t id2,
2416 static inline int security_task_fix_setuid(struct cred *new,
2417 const struct cred *old,
2420 return cap_task_fix_setuid(new, old, flags);
2423 static inline int security_task_setgid(gid_t id0, gid_t id1, gid_t id2,
2429 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
2434 static inline int security_task_getpgid(struct task_struct *p)
2439 static inline int security_task_getsid(struct task_struct *p)
2444 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
2449 static inline int security_task_setgroups(struct group_info *group_info)
2454 static inline int security_task_setnice(struct task_struct *p, int nice)
2456 return cap_task_setnice(p, nice);
2459 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
2461 return cap_task_setioprio(p, ioprio);
2464 static inline int security_task_getioprio(struct task_struct *p)
2469 static inline int security_task_setrlimit(unsigned int resource,
2470 struct rlimit *new_rlim)
2475 static inline int security_task_setscheduler(struct task_struct *p,
2477 struct sched_param *lp)
2479 return cap_task_setscheduler(p, policy, lp);
2482 static inline int security_task_getscheduler(struct task_struct *p)
2487 static inline int security_task_movememory(struct task_struct *p)
2492 static inline int security_task_kill(struct task_struct *p,
2493 struct siginfo *info, int sig,
2499 static inline int security_task_wait(struct task_struct *p)
2504 static inline int security_task_prctl(int option, unsigned long arg2,
2509 return cap_task_prctl(option, arg2, arg3, arg3, arg5);
2512 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
2515 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
2521 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
2526 static inline int security_msg_msg_alloc(struct msg_msg *msg)
2531 static inline void security_msg_msg_free(struct msg_msg *msg)
2534 static inline int security_msg_queue_alloc(struct msg_queue *msq)
2539 static inline void security_msg_queue_free(struct msg_queue *msq)
2542 static inline int security_msg_queue_associate(struct msg_queue *msq,
2548 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
2553 static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
2554 struct msg_msg *msg, int msqflg)
2559 static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
2560 struct msg_msg *msg,
2561 struct task_struct *target,
2562 long type, int mode)
2567 static inline int security_shm_alloc(struct shmid_kernel *shp)
2572 static inline void security_shm_free(struct shmid_kernel *shp)
2575 static inline int security_shm_associate(struct shmid_kernel *shp,
2581 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
2586 static inline int security_shm_shmat(struct shmid_kernel *shp,
2587 char __user *shmaddr, int shmflg)
2592 static inline int security_sem_alloc(struct sem_array *sma)
2597 static inline void security_sem_free(struct sem_array *sma)
2600 static inline int security_sem_associate(struct sem_array *sma, int semflg)
2605 static inline int security_sem_semctl(struct sem_array *sma, int cmd)
2610 static inline int security_sem_semop(struct sem_array *sma,
2611 struct sembuf *sops, unsigned nsops,
2617 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
2620 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
2625 static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2630 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
2632 return cap_netlink_send(sk, skb);
2635 static inline int security_netlink_recv(struct sk_buff *skb, int cap)
2637 return cap_netlink_recv(skb, cap);
2640 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2645 static inline int security_secctx_to_secid(const char *secdata,
2652 static inline void security_release_secctx(char *secdata, u32 seclen)
2656 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
2660 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
2664 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
2668 #endif /* CONFIG_SECURITY */
2670 #ifdef CONFIG_SECURITY_NETWORK
2672 int security_unix_stream_connect(struct socket *sock, struct socket *other,
2673 struct sock *newsk);
2674 int security_unix_may_send(struct socket *sock, struct socket *other);
2675 int security_socket_create(int family, int type, int protocol, int kern);
2676 int security_socket_post_create(struct socket *sock, int family,
2677 int type, int protocol, int kern);
2678 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
2679 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
2680 int security_socket_listen(struct socket *sock, int backlog);
2681 int security_socket_accept(struct socket *sock, struct socket *newsock);
2682 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
2683 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2684 int size, int flags);
2685 int security_socket_getsockname(struct socket *sock);
2686 int security_socket_getpeername(struct socket *sock);
2687 int security_socket_getsockopt(struct socket *sock, int level, int optname);
2688 int security_socket_setsockopt(struct socket *sock, int level, int optname);
2689 int security_socket_shutdown(struct socket *sock, int how);
2690 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
2691 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2692 int __user *optlen, unsigned len);
2693 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
2694 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
2695 void security_sk_free(struct sock *sk);
2696 void security_sk_clone(const struct sock *sk, struct sock *newsk);
2697 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
2698 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
2699 void security_sock_graft(struct sock*sk, struct socket *parent);
2700 int security_inet_conn_request(struct sock *sk,
2701 struct sk_buff *skb, struct request_sock *req);
2702 void security_inet_csk_clone(struct sock *newsk,
2703 const struct request_sock *req);
2704 void security_inet_conn_established(struct sock *sk,
2705 struct sk_buff *skb);
2706 int security_tun_dev_create(void);
2707 void security_tun_dev_post_create(struct sock *sk);
2708 int security_tun_dev_attach(struct sock *sk);
2710 #else /* CONFIG_SECURITY_NETWORK */
2711 static inline int security_unix_stream_connect(struct socket *sock,
2712 struct socket *other,
2718 static inline int security_unix_may_send(struct socket *sock,
2719 struct socket *other)
2724 static inline int security_socket_create(int family, int type,
2725 int protocol, int kern)
2730 static inline int security_socket_post_create(struct socket *sock,
2733 int protocol, int kern)
2738 static inline int security_socket_bind(struct socket *sock,
2739 struct sockaddr *address,
2745 static inline int security_socket_connect(struct socket *sock,
2746 struct sockaddr *address,
2752 static inline int security_socket_listen(struct socket *sock, int backlog)
2757 static inline int security_socket_accept(struct socket *sock,
2758 struct socket *newsock)
2763 static inline int security_socket_sendmsg(struct socket *sock,
2764 struct msghdr *msg, int size)
2769 static inline int security_socket_recvmsg(struct socket *sock,
2770 struct msghdr *msg, int size,
2776 static inline int security_socket_getsockname(struct socket *sock)
2781 static inline int security_socket_getpeername(struct socket *sock)
2786 static inline int security_socket_getsockopt(struct socket *sock,
2787 int level, int optname)
2792 static inline int security_socket_setsockopt(struct socket *sock,
2793 int level, int optname)
2798 static inline int security_socket_shutdown(struct socket *sock, int how)
2802 static inline int security_sock_rcv_skb(struct sock *sk,
2803 struct sk_buff *skb)
2808 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2809 int __user *optlen, unsigned len)
2811 return -ENOPROTOOPT;
2814 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
2816 return -ENOPROTOOPT;
2819 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2824 static inline void security_sk_free(struct sock *sk)
2828 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
2832 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
2836 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2840 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
2844 static inline int security_inet_conn_request(struct sock *sk,
2845 struct sk_buff *skb, struct request_sock *req)
2850 static inline void security_inet_csk_clone(struct sock *newsk,
2851 const struct request_sock *req)
2855 static inline void security_inet_conn_established(struct sock *sk,
2856 struct sk_buff *skb)
2860 static inline int security_tun_dev_create(void)
2865 static inline void security_tun_dev_post_create(struct sock *sk)
2869 static inline int security_tun_dev_attach(struct sock *sk)
2873 #endif /* CONFIG_SECURITY_NETWORK */
2875 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2877 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx);
2878 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
2879 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
2880 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
2881 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
2882 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2883 struct xfrm_sec_ctx *polsec, u32 secid);
2884 int security_xfrm_state_delete(struct xfrm_state *x);
2885 void security_xfrm_state_free(struct xfrm_state *x);
2886 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
2887 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2888 struct xfrm_policy *xp, struct flowi *fl);
2889 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
2890 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
2892 #else /* CONFIG_SECURITY_NETWORK_XFRM */
2894 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
2899 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
2904 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
2908 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
2913 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
2914 struct xfrm_user_sec_ctx *sec_ctx)
2919 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2920 struct xfrm_sec_ctx *polsec, u32 secid)
2925 static inline void security_xfrm_state_free(struct xfrm_state *x)
2929 static inline int security_xfrm_state_delete(struct xfrm_state *x)
2934 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
2939 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2940 struct xfrm_policy *xp, struct flowi *fl)
2945 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
2950 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2954 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2956 #ifdef CONFIG_SECURITY_PATH
2957 int security_path_unlink(struct path *dir, struct dentry *dentry);
2958 int security_path_mkdir(struct path *dir, struct dentry *dentry, int mode);
2959 int security_path_rmdir(struct path *dir, struct dentry *dentry);
2960 int security_path_mknod(struct path *dir, struct dentry *dentry, int mode,
2962 int security_path_truncate(struct path *path, loff_t length,
2963 unsigned int time_attrs);
2964 int security_path_symlink(struct path *dir, struct dentry *dentry,
2965 const char *old_name);
2966 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
2967 struct dentry *new_dentry);
2968 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
2969 struct path *new_dir, struct dentry *new_dentry);
2970 int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
2972 int security_path_chown(struct path *path, uid_t uid, gid_t gid);
2973 #else /* CONFIG_SECURITY_PATH */
2974 static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
2979 static inline int security_path_mkdir(struct path *dir, struct dentry *dentry,
2985 static inline int security_path_rmdir(struct path *dir, struct dentry *dentry)
2990 static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
2991 int mode, unsigned int dev)
2996 static inline int security_path_truncate(struct path *path, loff_t length,
2997 unsigned int time_attrs)
3002 static inline int security_path_symlink(struct path *dir, struct dentry *dentry,
3003 const char *old_name)
3008 static inline int security_path_link(struct dentry *old_dentry,
3009 struct path *new_dir,
3010 struct dentry *new_dentry)
3015 static inline int security_path_rename(struct path *old_dir,
3016 struct dentry *old_dentry,
3017 struct path *new_dir,
3018 struct dentry *new_dentry)
3023 static inline int security_path_chmod(struct dentry *dentry,
3024 struct vfsmount *mnt,
3030 static inline int security_path_chown(struct path *path, uid_t uid, gid_t gid)
3034 #endif /* CONFIG_SECURITY_PATH */
3037 #ifdef CONFIG_SECURITY
3039 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
3040 void security_key_free(struct key *key);
3041 int security_key_permission(key_ref_t key_ref,
3042 const struct cred *cred, key_perm_t perm);
3043 int security_key_getsecurity(struct key *key, char **_buffer);
3044 int security_key_session_to_parent(const struct cred *cred,
3045 const struct cred *parent_cred,
3050 static inline int security_key_alloc(struct key *key,
3051 const struct cred *cred,
3052 unsigned long flags)
3057 static inline void security_key_free(struct key *key)
3061 static inline int security_key_permission(key_ref_t key_ref,
3062 const struct cred *cred,
3068 static inline int security_key_getsecurity(struct key *key, char **_buffer)
3074 static inline int security_key_session_to_parent(const struct cred *cred,
3075 const struct cred *parent_cred,
3082 #endif /* CONFIG_KEYS */
3085 #ifdef CONFIG_SECURITY
3086 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
3087 int security_audit_rule_known(struct audit_krule *krule);
3088 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
3089 struct audit_context *actx);
3090 void security_audit_rule_free(void *lsmrule);
3094 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
3100 static inline int security_audit_rule_known(struct audit_krule *krule)
3105 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
3106 void *lsmrule, struct audit_context *actx)
3111 static inline void security_audit_rule_free(void *lsmrule)
3114 #endif /* CONFIG_SECURITY */
3115 #endif /* CONFIG_AUDIT */
3117 #ifdef CONFIG_SECURITYFS
3119 extern struct dentry *securityfs_create_file(const char *name, mode_t mode,
3120 struct dentry *parent, void *data,
3121 const struct file_operations *fops);
3122 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
3123 extern void securityfs_remove(struct dentry *dentry);
3125 #else /* CONFIG_SECURITYFS */
3127 static inline struct dentry *securityfs_create_dir(const char *name,
3128 struct dentry *parent)
3130 return ERR_PTR(-ENODEV);
3133 static inline struct dentry *securityfs_create_file(const char *name,
3135 struct dentry *parent,
3137 const struct file_operations *fops)
3139 return ERR_PTR(-ENODEV);
3142 static inline void securityfs_remove(struct dentry *dentry)
3147 #ifdef CONFIG_SECURITY
3149 static inline char *alloc_secdata(void)
3151 return (char *)get_zeroed_page(GFP_KERNEL);
3154 static inline void free_secdata(void *secdata)
3156 free_page((unsigned long)secdata);
3161 static inline char *alloc_secdata(void)
3166 static inline void free_secdata(void *secdata)
3168 #endif /* CONFIG_SECURITY */
3170 #endif /* ! __LINUX_SECURITY_H */