4 * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
5 * Copyright (C) 2001 Greg Kroah-Hartman <greg@kroah.com>
6 * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
7 * Copyright (C) 2001 James Morris <jmorris@intercode.com.au>
8 * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group)
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * Due to this file being licensed under the GPL there is controversy over
16 * whether this permits you to write a module that #includes this file
17 * without placing your module under the GPL. Please consult a lawyer for
18 * advice before doing this.
22 #ifndef __LINUX_SECURITY_H
23 #define __LINUX_SECURITY_H
26 #include <linux/binfmts.h>
27 #include <linux/signal.h>
28 #include <linux/resource.h>
29 #include <linux/sem.h>
30 #include <linux/shm.h>
31 #include <linux/mm.h> /* PAGE_ALIGN */
32 #include <linux/msg.h>
33 #include <linux/sched.h>
34 #include <linux/key.h>
35 #include <linux/xfrm.h>
36 #include <linux/gfp.h>
39 /* Maximum number of letters for an LSM name string */
40 #define SECURITY_NAME_MAX 10
42 /* If capable should audit the security request */
43 #define SECURITY_CAP_NOAUDIT 0
44 #define SECURITY_CAP_AUDIT 1
50 * These functions are in security/capability.c and are used
51 * as the default capabilities functions
53 extern int cap_capable(struct task_struct *tsk, const struct cred *cred,
55 extern int cap_settime(struct timespec *ts, struct timezone *tz);
56 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
57 extern int cap_ptrace_traceme(struct task_struct *parent);
58 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
59 extern int cap_capset(struct cred *new, const struct cred *old,
60 const kernel_cap_t *effective,
61 const kernel_cap_t *inheritable,
62 const kernel_cap_t *permitted);
63 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
64 extern int cap_bprm_secureexec(struct linux_binprm *bprm);
65 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
66 const void *value, size_t size, int flags);
67 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
68 extern int cap_inode_need_killpriv(struct dentry *dentry);
69 extern int cap_inode_killpriv(struct dentry *dentry);
70 extern int cap_file_mmap(struct file *file, unsigned long reqprot,
71 unsigned long prot, unsigned long flags,
72 unsigned long addr, unsigned long addr_only);
73 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
74 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
75 unsigned long arg4, unsigned long arg5);
76 extern int cap_task_setscheduler(struct task_struct *p, int policy, struct sched_param *lp);
77 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
78 extern int cap_task_setnice(struct task_struct *p, int nice);
79 extern int cap_syslog(int type, bool from_file);
80 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
92 struct xfrm_user_sec_ctx;
95 extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
96 extern int cap_netlink_recv(struct sk_buff *skb, int cap);
98 void reset_security_ops(void);
101 extern unsigned long mmap_min_addr;
102 extern unsigned long dac_mmap_min_addr;
104 #define dac_mmap_min_addr 0UL
108 * Values used in the task_security_ops calls
110 /* setuid or setgid, id0 == uid or gid */
111 #define LSM_SETID_ID 1
113 /* setreuid or setregid, id0 == real, id1 == eff */
114 #define LSM_SETID_RE 2
116 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
117 #define LSM_SETID_RES 4
119 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
120 #define LSM_SETID_FS 8
122 /* forward declares to avoid warnings */
126 /* bprm->unsafe reasons */
127 #define LSM_UNSAFE_SHARE 1
128 #define LSM_UNSAFE_PTRACE 2
129 #define LSM_UNSAFE_PTRACE_CAP 4
133 * If a hint addr is less than mmap_min_addr change hint to be as
134 * low as possible but still greater than mmap_min_addr
136 static inline unsigned long round_hint_to_min(unsigned long hint)
139 if (((void *)hint != NULL) &&
140 (hint < mmap_min_addr))
141 return PAGE_ALIGN(mmap_min_addr);
144 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
145 void __user *buffer, size_t *lenp, loff_t *ppos);
148 #ifdef CONFIG_SECURITY
150 struct security_mnt_opts {
156 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
158 opts->mnt_opts = NULL;
159 opts->mnt_opts_flags = NULL;
160 opts->num_mnt_opts = 0;
163 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
167 for (i = 0; i < opts->num_mnt_opts; i++)
168 kfree(opts->mnt_opts[i]);
169 kfree(opts->mnt_opts);
170 opts->mnt_opts = NULL;
171 kfree(opts->mnt_opts_flags);
172 opts->mnt_opts_flags = NULL;
173 opts->num_mnt_opts = 0;
177 * struct security_operations - main security structure
179 * Security module identifier.
182 * A string that acts as a unique identifeir for the LSM with max number
183 * of characters = SECURITY_NAME_MAX.
185 * Security hooks for program execution operations.
188 * Save security information in the bprm->security field, typically based
189 * on information about the bprm->file, for later use by the apply_creds
190 * hook. This hook may also optionally check permissions (e.g. for
191 * transitions between security domains).
192 * This hook may be called multiple times during a single execve, e.g. for
193 * interpreters. The hook can tell whether it has already been called by
194 * checking to see if @bprm->security is non-NULL. If so, then the hook
195 * may decide either to retain the security information saved earlier or
197 * @bprm contains the linux_binprm structure.
198 * Return 0 if the hook is successful and permission is granted.
199 * @bprm_check_security:
200 * This hook mediates the point when a search for a binary handler will
201 * begin. It allows a check the @bprm->security value which is set in the
202 * preceding set_creds call. The primary difference from set_creds is
203 * that the argv list and envp list are reliably available in @bprm. This
204 * hook may be called multiple times during a single execve; and in each
205 * pass set_creds is called first.
206 * @bprm contains the linux_binprm structure.
207 * Return 0 if the hook is successful and permission is granted.
208 * @bprm_committing_creds:
209 * Prepare to install the new security attributes of a process being
210 * transformed by an execve operation, based on the old credentials
211 * pointed to by @current->cred and the information set in @bprm->cred by
212 * the bprm_set_creds hook. @bprm points to the linux_binprm structure.
213 * This hook is a good place to perform state changes on the process such
214 * as closing open file descriptors to which access will no longer be
215 * granted when the attributes are changed. This is called immediately
216 * before commit_creds().
217 * @bprm_committed_creds:
218 * Tidy up after the installation of the new security attributes of a
219 * process being transformed by an execve operation. The new credentials
220 * have, by this point, been set to @current->cred. @bprm points to the
221 * linux_binprm structure. This hook is a good place to perform state
222 * changes on the process such as clearing out non-inheritable signal
223 * state. This is called immediately after commit_creds().
225 * Return a boolean value (0 or 1) indicating whether a "secure exec"
226 * is required. The flag is passed in the auxiliary table
227 * on the initial stack to the ELF interpreter to indicate whether libc
228 * should enable secure mode.
229 * @bprm contains the linux_binprm structure.
231 * Security hooks for filesystem operations.
233 * @sb_alloc_security:
234 * Allocate and attach a security structure to the sb->s_security field.
235 * The s_security field is initialized to NULL when the structure is
237 * @sb contains the super_block structure to be modified.
238 * Return 0 if operation was successful.
240 * Deallocate and clear the sb->s_security field.
241 * @sb contains the super_block structure to be modified.
243 * Check permission before obtaining filesystem statistics for the @mnt
245 * @dentry is a handle on the superblock for the filesystem.
246 * Return 0 if permission is granted.
248 * Check permission before an object specified by @dev_name is mounted on
249 * the mount point named by @nd. For an ordinary mount, @dev_name
250 * identifies a device if the file system type requires a device. For a
251 * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a
252 * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
253 * pathname of the object being mounted.
254 * @dev_name contains the name for object being mounted.
255 * @path contains the path for mount point object.
256 * @type contains the filesystem type.
257 * @flags contains the mount flags.
258 * @data contains the filesystem-specific data.
259 * Return 0 if permission is granted.
261 * Allow mount option data to be copied prior to parsing by the filesystem,
262 * so that the security module can extract security-specific mount
263 * options cleanly (a filesystem may modify the data e.g. with strsep()).
264 * This also allows the original mount data to be stripped of security-
265 * specific options to avoid having to make filesystems aware of them.
266 * @type the type of filesystem being mounted.
267 * @orig the original mount data copied from userspace.
268 * @copy copied data which will be passed to the security module.
269 * Returns 0 if the copy was successful.
271 * Check permission before the @mnt file system is unmounted.
272 * @mnt contains the mounted file system.
273 * @flags contains the unmount flags, e.g. MNT_FORCE.
274 * Return 0 if permission is granted.
276 * Check permission before pivoting the root filesystem.
277 * @old_path contains the path for the new location of the current root (put_old).
278 * @new_path contains the path for the new root (new_root).
279 * Return 0 if permission is granted.
281 * Set the security relevant mount options used for a superblock
282 * @sb the superblock to set security mount options for
283 * @opts binary data structure containing all lsm mount data
284 * @sb_clone_mnt_opts:
285 * Copy all security options from a given superblock to another
286 * @oldsb old superblock which contain information to clone
287 * @newsb new superblock which needs filled in
288 * @sb_parse_opts_str:
289 * Parse a string of security data filling in the opts structure
290 * @options string containing all mount options known by the LSM
291 * @opts binary data structure usable by the LSM
293 * Security hooks for inode operations.
295 * @inode_alloc_security:
296 * Allocate and attach a security structure to @inode->i_security. The
297 * i_security field is initialized to NULL when the inode structure is
299 * @inode contains the inode structure.
300 * Return 0 if operation was successful.
301 * @inode_free_security:
302 * @inode contains the inode structure.
303 * Deallocate the inode security structure and set @inode->i_security to
305 * @inode_init_security:
306 * Obtain the security attribute name suffix and value to set on a newly
307 * created inode and set up the incore security field for the new inode.
308 * This hook is called by the fs code as part of the inode creation
309 * transaction and provides for atomic labeling of the inode, unlike
310 * the post_create/mkdir/... hooks called by the VFS. The hook function
311 * is expected to allocate the name and value via kmalloc, with the caller
312 * being responsible for calling kfree after using them.
313 * If the security module does not use security attributes or does
314 * not wish to put a security attribute on this particular inode,
315 * then it should return -EOPNOTSUPP to skip this processing.
316 * @inode contains the inode structure of the newly created inode.
317 * @dir contains the inode structure of the parent directory.
318 * @name will be set to the allocated name suffix (e.g. selinux).
319 * @value will be set to the allocated attribute value.
320 * @len will be set to the length of the value.
321 * Returns 0 if @name and @value have been successfully set,
322 * -EOPNOTSUPP if no security attribute is needed, or
323 * -ENOMEM on memory allocation failure.
325 * Check permission to create a regular file.
326 * @dir contains inode structure of the parent of the new file.
327 * @dentry contains the dentry structure for the file to be created.
328 * @mode contains the file mode of the file to be created.
329 * Return 0 if permission is granted.
331 * Check permission before creating a new hard link to a file.
332 * @old_dentry contains the dentry structure for an existing link to the file.
333 * @dir contains the inode structure of the parent directory of the new link.
334 * @new_dentry contains the dentry structure for the new link.
335 * Return 0 if permission is granted.
337 * Check permission before creating a new hard link to a file.
338 * @old_dentry contains the dentry structure for an existing link
340 * @new_dir contains the path structure of the parent directory of
342 * @new_dentry contains the dentry structure for the new link.
343 * Return 0 if permission is granted.
345 * Check the permission to remove a hard link to a file.
346 * @dir contains the inode structure of parent directory of the file.
347 * @dentry contains the dentry structure for file to be unlinked.
348 * Return 0 if permission is granted.
350 * Check the permission to remove a hard link to a file.
351 * @dir contains the path structure of parent directory of the file.
352 * @dentry contains the dentry structure for file to be unlinked.
353 * Return 0 if permission is granted.
355 * Check the permission to create a symbolic link to a file.
356 * @dir contains the inode structure of parent directory of the symbolic link.
357 * @dentry contains the dentry structure of the symbolic link.
358 * @old_name contains the pathname of file.
359 * Return 0 if permission is granted.
361 * Check the permission to create a symbolic link to a file.
362 * @dir contains the path structure of parent directory of
364 * @dentry contains the dentry structure of the symbolic link.
365 * @old_name contains the pathname of file.
366 * Return 0 if permission is granted.
368 * Check permissions to create a new directory in the existing directory
369 * associated with inode strcture @dir.
370 * @dir containst the inode structure of parent of the directory to be created.
371 * @dentry contains the dentry structure of new directory.
372 * @mode contains the mode of new directory.
373 * Return 0 if permission is granted.
375 * Check permissions to create a new directory in the existing directory
376 * associated with path strcture @path.
377 * @dir containst the path structure of parent of the directory
379 * @dentry contains the dentry structure of new directory.
380 * @mode contains the mode of new directory.
381 * Return 0 if permission is granted.
383 * Check the permission to remove a directory.
384 * @dir contains the inode structure of parent of the directory to be removed.
385 * @dentry contains the dentry structure of directory to be removed.
386 * Return 0 if permission is granted.
388 * Check the permission to remove a directory.
389 * @dir contains the path structure of parent of the directory to be
391 * @dentry contains the dentry structure of directory to be removed.
392 * Return 0 if permission is granted.
394 * Check permissions when creating a special file (or a socket or a fifo
395 * file created via the mknod system call). Note that if mknod operation
396 * is being done for a regular file, then the create hook will be called
398 * @dir contains the inode structure of parent of the new file.
399 * @dentry contains the dentry structure of the new file.
400 * @mode contains the mode of the new file.
401 * @dev contains the device number.
402 * Return 0 if permission is granted.
404 * Check permissions when creating a file. Note that this hook is called
405 * even if mknod operation is being done for a regular file.
406 * @dir contains the path structure of parent of the new file.
407 * @dentry contains the dentry structure of the new file.
408 * @mode contains the mode of the new file.
409 * @dev contains the undecoded device number. Use new_decode_dev() to get
410 * the decoded device number.
411 * Return 0 if permission is granted.
413 * Check for permission to rename a file or directory.
414 * @old_dir contains the inode structure for parent of the old link.
415 * @old_dentry contains the dentry structure of the old link.
416 * @new_dir contains the inode structure for parent of the new link.
417 * @new_dentry contains the dentry structure of the new link.
418 * Return 0 if permission is granted.
420 * Check for permission to rename a file or directory.
421 * @old_dir contains the path structure for parent of the old link.
422 * @old_dentry contains the dentry structure of the old link.
423 * @new_dir contains the path structure for parent of the new link.
424 * @new_dentry contains the dentry structure of the new link.
425 * Return 0 if permission is granted.
427 * Check for permission to change DAC's permission of a file or directory.
428 * @dentry contains the dentry structure.
429 * @mnt contains the vfsmnt structure.
430 * @mode contains DAC's mode.
431 * Return 0 if permission is granted.
433 * Check for permission to change owner/group of a file or directory.
434 * @path contains the path structure.
435 * @uid contains new owner's ID.
436 * @gid contains new group's ID.
437 * Return 0 if permission is granted.
439 * Check for permission to change root directory.
440 * @path contains the path structure.
441 * Return 0 if permission is granted.
443 * Check the permission to read the symbolic link.
444 * @dentry contains the dentry structure for the file link.
445 * Return 0 if permission is granted.
446 * @inode_follow_link:
447 * Check permission to follow a symbolic link when looking up a pathname.
448 * @dentry contains the dentry structure for the link.
449 * @nd contains the nameidata structure for the parent directory.
450 * Return 0 if permission is granted.
452 * Check permission before accessing an inode. This hook is called by the
453 * existing Linux permission function, so a security module can use it to
454 * provide additional checking for existing Linux permission checks.
455 * Notice that this hook is called when a file is opened (as well as many
456 * other operations), whereas the file_security_ops permission hook is
457 * called when the actual read/write operations are performed.
458 * @inode contains the inode structure to check.
459 * @mask contains the permission mask.
460 * @nd contains the nameidata (may be NULL).
461 * Return 0 if permission is granted.
463 * Check permission before setting file attributes. Note that the kernel
464 * call to notify_change is performed from several locations, whenever
465 * file attributes change (such as when a file is truncated, chown/chmod
466 * operations, transferring disk quotas, etc).
467 * @dentry contains the dentry structure for the file.
468 * @attr is the iattr structure containing the new file attributes.
469 * Return 0 if permission is granted.
471 * Check permission before truncating a file.
472 * @path contains the path structure for the file.
473 * @length is the new length of the file.
474 * @time_attrs is the flags passed to do_truncate().
475 * Return 0 if permission is granted.
477 * Check permission before obtaining file attributes.
478 * @mnt is the vfsmount where the dentry was looked up
479 * @dentry contains the dentry structure for the file.
480 * Return 0 if permission is granted.
482 * @inode contains the inode structure for deleted inode.
483 * This hook is called when a deleted inode is released (i.e. an inode
484 * with no hard links has its use count drop to zero). A security module
485 * can use this hook to release any persistent label associated with the
488 * Check permission before setting the extended attributes
489 * @value identified by @name for @dentry.
490 * Return 0 if permission is granted.
491 * @inode_post_setxattr:
492 * Update inode security field after successful setxattr operation.
493 * @value identified by @name for @dentry.
495 * Check permission before obtaining the extended attributes
496 * identified by @name for @dentry.
497 * Return 0 if permission is granted.
499 * Check permission before obtaining the list of extended attribute
501 * Return 0 if permission is granted.
502 * @inode_removexattr:
503 * Check permission before removing the extended attribute
504 * identified by @name for @dentry.
505 * Return 0 if permission is granted.
506 * @inode_getsecurity:
507 * Retrieve a copy of the extended attribute representation of the
508 * security label associated with @name for @inode via @buffer. Note that
509 * @name is the remainder of the attribute name after the security prefix
510 * has been removed. @alloc is used to specify of the call should return a
511 * value via the buffer or just the value length Return size of buffer on
513 * @inode_setsecurity:
514 * Set the security label associated with @name for @inode from the
515 * extended attribute value @value. @size indicates the size of the
516 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
517 * Note that @name is the remainder of the attribute name after the
518 * security. prefix has been removed.
519 * Return 0 on success.
520 * @inode_listsecurity:
521 * Copy the extended attribute names for the security labels
522 * associated with @inode into @buffer. The maximum size of @buffer
523 * is specified by @buffer_size. @buffer may be NULL to request
524 * the size of the buffer required.
525 * Returns number of bytes used/required on success.
526 * @inode_need_killpriv:
527 * Called when an inode has been changed.
528 * @dentry is the dentry being changed.
529 * Return <0 on error to abort the inode change operation.
530 * Return 0 if inode_killpriv does not need to be called.
531 * Return >0 if inode_killpriv does need to be called.
533 * The setuid bit is being removed. Remove similar security labels.
534 * Called with the dentry->d_inode->i_mutex held.
535 * @dentry is the dentry being changed.
536 * Return 0 on success. If error is returned, then the operation
537 * causing setuid bit removal is failed.
539 * Get the secid associated with the node.
540 * @inode contains a pointer to the inode.
541 * @secid contains a pointer to the location where result will be saved.
542 * In case of failure, @secid will be set to zero.
544 * Security hooks for file operations
547 * Check file permissions before accessing an open file. This hook is
548 * called by various operations that read or write files. A security
549 * module can use this hook to perform additional checking on these
550 * operations, e.g. to revalidate permissions on use to support privilege
551 * bracketing or policy changes. Notice that this hook is used when the
552 * actual read/write operations are performed, whereas the
553 * inode_security_ops hook is called when a file is opened (as well as
554 * many other operations).
555 * Caveat: Although this hook can be used to revalidate permissions for
556 * various system call operations that read or write files, it does not
557 * address the revalidation of permissions for memory-mapped files.
558 * Security modules must handle this separately if they need such
560 * @file contains the file structure being accessed.
561 * @mask contains the requested permissions.
562 * Return 0 if permission is granted.
563 * @file_alloc_security:
564 * Allocate and attach a security structure to the file->f_security field.
565 * The security field is initialized to NULL when the structure is first
567 * @file contains the file structure to secure.
568 * Return 0 if the hook is successful and permission is granted.
569 * @file_free_security:
570 * Deallocate and free any security structures stored in file->f_security.
571 * @file contains the file structure being modified.
573 * @file contains the file structure.
574 * @cmd contains the operation to perform.
575 * @arg contains the operational arguments.
576 * Check permission for an ioctl operation on @file. Note that @arg can
577 * sometimes represents a user space pointer; in other cases, it may be a
578 * simple integer value. When @arg represents a user space pointer, it
579 * should never be used by the security module.
580 * Return 0 if permission is granted.
582 * Check permissions for a mmap operation. The @file may be NULL, e.g.
583 * if mapping anonymous memory.
584 * @file contains the file structure for file to map (may be NULL).
585 * @reqprot contains the protection requested by the application.
586 * @prot contains the protection that will be applied by the kernel.
587 * @flags contains the operational flags.
588 * Return 0 if permission is granted.
590 * Check permissions before changing memory access permissions.
591 * @vma contains the memory region to modify.
592 * @reqprot contains the protection requested by the application.
593 * @prot contains the protection that will be applied by the kernel.
594 * Return 0 if permission is granted.
596 * Check permission before performing file locking operations.
597 * Note: this hook mediates both flock and fcntl style locks.
598 * @file contains the file structure.
599 * @cmd contains the posix-translated lock operation to perform
600 * (e.g. F_RDLCK, F_WRLCK).
601 * Return 0 if permission is granted.
603 * Check permission before allowing the file operation specified by @cmd
604 * from being performed on the file @file. Note that @arg can sometimes
605 * represents a user space pointer; in other cases, it may be a simple
606 * integer value. When @arg represents a user space pointer, it should
607 * never be used by the security module.
608 * @file contains the file structure.
609 * @cmd contains the operation to be performed.
610 * @arg contains the operational arguments.
611 * Return 0 if permission is granted.
613 * Save owner security information (typically from current->security) in
614 * file->f_security for later use by the send_sigiotask hook.
615 * @file contains the file structure to update.
616 * Return 0 on success.
617 * @file_send_sigiotask:
618 * Check permission for the file owner @fown to send SIGIO or SIGURG to the
619 * process @tsk. Note that this hook is sometimes called from interrupt.
620 * Note that the fown_struct, @fown, is never outside the context of a
621 * struct file, so the file structure (and associated security information)
622 * can always be obtained:
623 * container_of(fown, struct file, f_owner)
624 * @tsk contains the structure of task receiving signal.
625 * @fown contains the file owner information.
626 * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
627 * Return 0 if permission is granted.
629 * This hook allows security modules to control the ability of a process
630 * to receive an open file descriptor via socket IPC.
631 * @file contains the file structure being received.
632 * Return 0 if permission is granted.
634 * Security hook for dentry
637 * Save open-time permission checking state for later use upon
638 * file_permission, and recheck access if anything has changed
639 * since inode_permission.
641 * Security hooks for task operations.
644 * Check permission before creating a child process. See the clone(2)
645 * manual page for definitions of the @clone_flags.
646 * @clone_flags contains the flags indicating what should be shared.
647 * Return 0 if permission is granted.
649 * @cred points to the credentials.
650 * @gfp indicates the atomicity of any memory allocations.
651 * Only allocate sufficient memory and attach to @cred such that
652 * cred_transfer() will not get ENOMEM.
654 * @cred points to the credentials.
655 * Deallocate and clear the cred->security field in a set of credentials.
657 * @new points to the new credentials.
658 * @old points to the original credentials.
659 * @gfp indicates the atomicity of any memory allocations.
660 * Prepare a new set of credentials by copying the data from the old set.
662 * @new points to the new credentials.
663 * @old points to the original credentials.
664 * Install a new set of credentials.
666 * @new points to the new credentials.
667 * @old points to the original credentials.
668 * Transfer data from original creds to new creds
670 * Set the credentials for a kernel service to act as (subjective context).
671 * @new points to the credentials to be modified.
672 * @secid specifies the security ID to be set
673 * The current task must be the one that nominated @secid.
674 * Return 0 if successful.
675 * @kernel_create_files_as:
676 * Set the file creation context in a set of credentials to be the same as
677 * the objective context of the specified inode.
678 * @new points to the credentials to be modified.
679 * @inode points to the inode to use as a reference.
680 * The current task must be the one that nominated @inode.
681 * Return 0 if successful.
682 * @kernel_module_request:
683 * Ability to trigger the kernel to automatically upcall to userspace for
684 * userspace to load a kernel module with the given name.
685 * @kmod_name name of the module requested by the kernel
686 * Return 0 if successful.
688 * Check permission before setting one or more of the user identity
689 * attributes of the current process. The @flags parameter indicates
690 * which of the set*uid system calls invoked this hook and how to
691 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
692 * definitions at the beginning of this file for the @flags values and
694 * @id0 contains a uid.
695 * @id1 contains a uid.
696 * @id2 contains a uid.
697 * @flags contains one of the LSM_SETID_* values.
698 * Return 0 if permission is granted.
700 * Update the module's state after setting one or more of the user
701 * identity attributes of the current process. The @flags parameter
702 * indicates which of the set*uid system calls invoked this hook. If
703 * @new is the set of credentials that will be installed. Modifications
704 * should be made to this rather than to @current->cred.
705 * @old is the set of credentials that are being replaces
706 * @flags contains one of the LSM_SETID_* values.
707 * Return 0 on success.
709 * Check permission before setting one or more of the group identity
710 * attributes of the current process. The @flags parameter indicates
711 * which of the set*gid system calls invoked this hook and how to
712 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
713 * definitions at the beginning of this file for the @flags values and
715 * @id0 contains a gid.
716 * @id1 contains a gid.
717 * @id2 contains a gid.
718 * @flags contains one of the LSM_SETID_* values.
719 * Return 0 if permission is granted.
721 * Check permission before setting the process group identifier of the
722 * process @p to @pgid.
723 * @p contains the task_struct for process being modified.
724 * @pgid contains the new pgid.
725 * Return 0 if permission is granted.
727 * Check permission before getting the process group identifier of the
729 * @p contains the task_struct for the process.
730 * Return 0 if permission is granted.
732 * Check permission before getting the session identifier of the process
734 * @p contains the task_struct for the process.
735 * Return 0 if permission is granted.
737 * Retrieve the security identifier of the process @p.
738 * @p contains the task_struct for the process and place is into @secid.
739 * In case of failure, @secid will be set to zero.
742 * Check permission before setting the supplementary group set of the
744 * @group_info contains the new group information.
745 * Return 0 if permission is granted.
747 * Check permission before setting the nice value of @p to @nice.
748 * @p contains the task_struct of process.
749 * @nice contains the new nice value.
750 * Return 0 if permission is granted.
752 * Check permission before setting the ioprio value of @p to @ioprio.
753 * @p contains the task_struct of process.
754 * @ioprio contains the new ioprio value
755 * Return 0 if permission is granted.
757 * Check permission before getting the ioprio value of @p.
758 * @p contains the task_struct of process.
759 * Return 0 if permission is granted.
761 * Check permission before setting the resource limits of the current
762 * process for @resource to @new_rlim. The old resource limit values can
763 * be examined by dereferencing (current->signal->rlim + resource).
764 * @resource contains the resource whose limit is being set.
765 * @new_rlim contains the new limits for @resource.
766 * Return 0 if permission is granted.
767 * @task_setscheduler:
768 * Check permission before setting scheduling policy and/or parameters of
769 * process @p based on @policy and @lp.
770 * @p contains the task_struct for process.
771 * @policy contains the scheduling policy.
772 * @lp contains the scheduling parameters.
773 * Return 0 if permission is granted.
774 * @task_getscheduler:
775 * Check permission before obtaining scheduling information for process
777 * @p contains the task_struct for process.
778 * Return 0 if permission is granted.
780 * Check permission before moving memory owned by process @p.
781 * @p contains the task_struct for process.
782 * Return 0 if permission is granted.
784 * Check permission before sending signal @sig to @p. @info can be NULL,
785 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
786 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
787 * from the kernel and should typically be permitted.
788 * SIGIO signals are handled separately by the send_sigiotask hook in
790 * @p contains the task_struct for process.
791 * @info contains the signal information.
792 * @sig contains the signal value.
793 * @secid contains the sid of the process where the signal originated
794 * Return 0 if permission is granted.
796 * Check permission before allowing a process to reap a child process @p
797 * and collect its status information.
798 * @p contains the task_struct for process.
799 * Return 0 if permission is granted.
801 * Check permission before performing a process control operation on the
803 * @option contains the operation.
804 * @arg2 contains a argument.
805 * @arg3 contains a argument.
806 * @arg4 contains a argument.
807 * @arg5 contains a argument.
808 * Return -ENOSYS if no-one wanted to handle this op, any other value to
809 * cause prctl() to return immediately with that value.
811 * Set the security attributes for an inode based on an associated task's
812 * security attributes, e.g. for /proc/pid inodes.
813 * @p contains the task_struct for the task.
814 * @inode contains the inode structure for the inode.
816 * Security hooks for Netlink messaging.
819 * Save security information for a netlink message so that permission
820 * checking can be performed when the message is processed. The security
821 * information can be saved using the eff_cap field of the
822 * netlink_skb_parms structure. Also may be used to provide fine
823 * grained control over message transmission.
824 * @sk associated sock of task sending the message.,
825 * @skb contains the sk_buff structure for the netlink message.
826 * Return 0 if the information was successfully saved and message
827 * is allowed to be transmitted.
829 * Check permission before processing the received netlink message in
831 * @skb contains the sk_buff structure for the netlink message.
832 * @cap indicates the capability required
833 * Return 0 if permission is granted.
835 * Security hooks for Unix domain networking.
837 * @unix_stream_connect:
838 * Check permissions before establishing a Unix domain stream connection
839 * between @sock and @other.
840 * @sock contains the socket structure.
841 * @other contains the peer socket structure.
842 * Return 0 if permission is granted.
844 * Check permissions before connecting or sending datagrams from @sock to
846 * @sock contains the socket structure.
847 * @sock contains the peer socket structure.
848 * Return 0 if permission is granted.
850 * The @unix_stream_connect and @unix_may_send hooks were necessary because
851 * Linux provides an alternative to the conventional file name space for Unix
852 * domain sockets. Whereas binding and connecting to sockets in the file name
853 * space is mediated by the typical file permissions (and caught by the mknod
854 * and permission hooks in inode_security_ops), binding and connecting to
855 * sockets in the abstract name space is completely unmediated. Sufficient
856 * control of Unix domain sockets in the abstract name space isn't possible
857 * using only the socket layer hooks, since we need to know the actual target
858 * socket, which is not looked up until we are inside the af_unix code.
860 * Security hooks for socket operations.
863 * Check permissions prior to creating a new socket.
864 * @family contains the requested protocol family.
865 * @type contains the requested communications type.
866 * @protocol contains the requested protocol.
867 * @kern set to 1 if a kernel socket.
868 * Return 0 if permission is granted.
869 * @socket_post_create:
870 * This hook allows a module to update or allocate a per-socket security
871 * structure. Note that the security field was not added directly to the
872 * socket structure, but rather, the socket security information is stored
873 * in the associated inode. Typically, the inode alloc_security hook will
874 * allocate and and attach security information to
875 * sock->inode->i_security. This hook may be used to update the
876 * sock->inode->i_security field with additional information that wasn't
877 * available when the inode was allocated.
878 * @sock contains the newly created socket structure.
879 * @family contains the requested protocol family.
880 * @type contains the requested communications type.
881 * @protocol contains the requested protocol.
882 * @kern set to 1 if a kernel socket.
884 * Check permission before socket protocol layer bind operation is
885 * performed and the socket @sock is bound to the address specified in the
886 * @address parameter.
887 * @sock contains the socket structure.
888 * @address contains the address to bind to.
889 * @addrlen contains the length of address.
890 * Return 0 if permission is granted.
892 * Check permission before socket protocol layer connect operation
893 * attempts to connect socket @sock to a remote address, @address.
894 * @sock contains the socket structure.
895 * @address contains the address of remote endpoint.
896 * @addrlen contains the length of address.
897 * Return 0 if permission is granted.
899 * Check permission before socket protocol layer listen operation.
900 * @sock contains the socket structure.
901 * @backlog contains the maximum length for the pending connection queue.
902 * Return 0 if permission is granted.
904 * Check permission before accepting a new connection. Note that the new
905 * socket, @newsock, has been created and some information copied to it,
906 * but the accept operation has not actually been performed.
907 * @sock contains the listening socket structure.
908 * @newsock contains the newly created server socket for connection.
909 * Return 0 if permission is granted.
911 * Check permission before transmitting a message to another socket.
912 * @sock contains the socket structure.
913 * @msg contains the message to be transmitted.
914 * @size contains the size of message.
915 * Return 0 if permission is granted.
917 * Check permission before receiving a message from a socket.
918 * @sock contains the socket structure.
919 * @msg contains the message structure.
920 * @size contains the size of message structure.
921 * @flags contains the operational flags.
922 * Return 0 if permission is granted.
923 * @socket_getsockname:
924 * Check permission before the local address (name) of the socket object
925 * @sock is retrieved.
926 * @sock contains the socket structure.
927 * Return 0 if permission is granted.
928 * @socket_getpeername:
929 * Check permission before the remote address (name) of a socket object
930 * @sock is retrieved.
931 * @sock contains the socket structure.
932 * Return 0 if permission is granted.
933 * @socket_getsockopt:
934 * Check permissions before retrieving the options associated with socket
936 * @sock contains the socket structure.
937 * @level contains the protocol level to retrieve option from.
938 * @optname contains the name of option to retrieve.
939 * Return 0 if permission is granted.
940 * @socket_setsockopt:
941 * Check permissions before setting the options associated with socket
943 * @sock contains the socket structure.
944 * @level contains the protocol level to set options for.
945 * @optname contains the name of the option to set.
946 * Return 0 if permission is granted.
948 * Checks permission before all or part of a connection on the socket
949 * @sock is shut down.
950 * @sock contains the socket structure.
951 * @how contains the flag indicating how future sends and receives are handled.
952 * Return 0 if permission is granted.
953 * @socket_sock_rcv_skb:
954 * Check permissions on incoming network packets. This hook is distinct
955 * from Netfilter's IP input hooks since it is the first time that the
956 * incoming sk_buff @skb has been associated with a particular socket, @sk.
957 * Must not sleep inside this hook because some callers hold spinlocks.
958 * @sk contains the sock (not socket) associated with the incoming sk_buff.
959 * @skb contains the incoming network data.
960 * @socket_getpeersec_stream:
961 * This hook allows the security module to provide peer socket security
962 * state for unix or connected tcp sockets to userspace via getsockopt
963 * SO_GETPEERSEC. For tcp sockets this can be meaningful if the
964 * socket is associated with an ipsec SA.
965 * @sock is the local socket.
966 * @optval userspace memory where the security state is to be copied.
967 * @optlen userspace int where the module should copy the actual length
968 * of the security state.
969 * @len as input is the maximum length to copy to userspace provided
971 * Return 0 if all is well, otherwise, typical getsockopt return
973 * @socket_getpeersec_dgram:
974 * This hook allows the security module to provide peer socket security
975 * state for udp sockets on a per-packet basis to userspace via
976 * getsockopt SO_GETPEERSEC. The application must first have indicated
977 * the IP_PASSSEC option via getsockopt. It can then retrieve the
978 * security state returned by this hook for a packet via the SCM_SECURITY
979 * ancillary message type.
980 * @skb is the skbuff for the packet being queried
981 * @secdata is a pointer to a buffer in which to copy the security data
982 * @seclen is the maximum length for @secdata
983 * Return 0 on success, error on failure.
984 * @sk_alloc_security:
985 * Allocate and attach a security structure to the sk->sk_security field,
986 * which is used to copy security attributes between local stream sockets.
988 * Deallocate security structure.
989 * @sk_clone_security:
990 * Clone/copy security structure.
992 * Retrieve the LSM-specific secid for the sock to enable caching of network
995 * Sets the socket's isec sid to the sock's sid.
996 * @inet_conn_request:
997 * Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
999 * Sets the new child socket's sid to the openreq sid.
1000 * @inet_conn_established:
1001 * Sets the connection's peersid to the secmark on skb.
1002 * @req_classify_flow:
1003 * Sets the flow's sid to the openreq sid.
1005 * Check permissions prior to creating a new TUN device.
1006 * @tun_dev_post_create:
1007 * This hook allows a module to update or allocate a per-socket security
1009 * @sk contains the newly created sock structure.
1011 * Check permissions prior to attaching to a persistent TUN device. This
1012 * hook can also be used by the module to update any security state
1013 * associated with the TUN device's sock structure.
1014 * @sk contains the existing sock structure.
1016 * Security hooks for XFRM operations.
1018 * @xfrm_policy_alloc_security:
1019 * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
1020 * Database used by the XFRM system.
1021 * @sec_ctx contains the security context information being provided by
1022 * the user-level policy update program (e.g., setkey).
1023 * Allocate a security structure to the xp->security field; the security
1024 * field is initialized to NULL when the xfrm_policy is allocated.
1025 * Return 0 if operation was successful (memory to allocate, legal context)
1026 * @xfrm_policy_clone_security:
1027 * @old_ctx contains an existing xfrm_sec_ctx.
1028 * @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
1029 * Allocate a security structure in new_ctxp that contains the
1030 * information from the old_ctx structure.
1031 * Return 0 if operation was successful (memory to allocate).
1032 * @xfrm_policy_free_security:
1033 * @ctx contains the xfrm_sec_ctx
1034 * Deallocate xp->security.
1035 * @xfrm_policy_delete_security:
1036 * @ctx contains the xfrm_sec_ctx.
1037 * Authorize deletion of xp->security.
1038 * @xfrm_state_alloc_security:
1039 * @x contains the xfrm_state being added to the Security Association
1040 * Database by the XFRM system.
1041 * @sec_ctx contains the security context information being provided by
1042 * the user-level SA generation program (e.g., setkey or racoon).
1043 * @secid contains the secid from which to take the mls portion of the context.
1044 * Allocate a security structure to the x->security field; the security
1045 * field is initialized to NULL when the xfrm_state is allocated. Set the
1046 * context to correspond to either sec_ctx or polsec, with the mls portion
1047 * taken from secid in the latter case.
1048 * Return 0 if operation was successful (memory to allocate, legal context).
1049 * @xfrm_state_free_security:
1050 * @x contains the xfrm_state.
1051 * Deallocate x->security.
1052 * @xfrm_state_delete_security:
1053 * @x contains the xfrm_state.
1054 * Authorize deletion of x->security.
1055 * @xfrm_policy_lookup:
1056 * @ctx contains the xfrm_sec_ctx for which the access control is being
1058 * @fl_secid contains the flow security label that is used to authorize
1059 * access to the policy xp.
1060 * @dir contains the direction of the flow (input or output).
1061 * Check permission when a flow selects a xfrm_policy for processing
1062 * XFRMs on a packet. The hook is called when selecting either a
1063 * per-socket policy or a generic xfrm policy.
1064 * Return 0 if permission is granted, -ESRCH otherwise, or -errno
1066 * @xfrm_state_pol_flow_match:
1067 * @x contains the state to match.
1068 * @xp contains the policy to check for a match.
1069 * @fl contains the flow to check for a match.
1070 * Return 1 if there is a match.
1071 * @xfrm_decode_session:
1072 * @skb points to skb to decode.
1073 * @secid points to the flow key secid to set.
1074 * @ckall says if all xfrms used should be checked for same secid.
1075 * Return 0 if ckall is zero or all xfrms used have the same secid.
1077 * Security hooks affecting all Key Management operations
1080 * Permit allocation of a key and assign security data. Note that key does
1081 * not have a serial number assigned at this point.
1082 * @key points to the key.
1083 * @flags is the allocation flags
1084 * Return 0 if permission is granted, -ve error otherwise.
1086 * Notification of destruction; free security data.
1087 * @key points to the key.
1090 * See whether a specific operational right is granted to a process on a
1092 * @key_ref refers to the key (key pointer + possession attribute bit).
1093 * @cred points to the credentials to provide the context against which to
1094 * evaluate the security data on the key.
1095 * @perm describes the combination of permissions required of this key.
1096 * Return 1 if permission granted, 0 if permission denied and -ve it the
1097 * normal permissions model should be effected.
1099 * Get a textual representation of the security context attached to a key
1100 * for the purposes of honouring KEYCTL_GETSECURITY. This function
1101 * allocates the storage for the NUL-terminated string and the caller
1103 * @key points to the key to be queried.
1104 * @_buffer points to a pointer that should be set to point to the
1105 * resulting string (if no label or an error occurs).
1106 * Return the length of the string (including terminating NUL) or -ve if
1108 * May also return 0 (and a NULL buffer pointer) if there is no label.
1109 * @key_session_to_parent:
1110 * Forcibly assign the session keyring from a process to its parent
1112 * @cred: Pointer to process's credentials
1113 * @parent_cred: Pointer to parent process's credentials
1114 * @keyring: Proposed new session keyring
1115 * Return 0 if permission is granted, -ve error otherwise.
1117 * Security hooks affecting all System V IPC operations.
1120 * Check permissions for access to IPC
1121 * @ipcp contains the kernel IPC permission structure
1122 * @flag contains the desired (requested) permission set
1123 * Return 0 if permission is granted.
1125 * Get the secid associated with the ipc object.
1126 * @ipcp contains the kernel IPC permission structure.
1127 * @secid contains a pointer to the location where result will be saved.
1128 * In case of failure, @secid will be set to zero.
1130 * Security hooks for individual messages held in System V IPC message queues
1131 * @msg_msg_alloc_security:
1132 * Allocate and attach a security structure to the msg->security field.
1133 * The security field is initialized to NULL when the structure is first
1135 * @msg contains the message structure to be modified.
1136 * Return 0 if operation was successful and permission is granted.
1137 * @msg_msg_free_security:
1138 * Deallocate the security structure for this message.
1139 * @msg contains the message structure to be modified.
1141 * Security hooks for System V IPC Message Queues
1143 * @msg_queue_alloc_security:
1144 * Allocate and attach a security structure to the
1145 * msq->q_perm.security field. The security field is initialized to
1146 * NULL when the structure is first created.
1147 * @msq contains the message queue structure to be modified.
1148 * Return 0 if operation was successful and permission is granted.
1149 * @msg_queue_free_security:
1150 * Deallocate security structure for this message queue.
1151 * @msq contains the message queue structure to be modified.
1152 * @msg_queue_associate:
1153 * Check permission when a message queue is requested through the
1154 * msgget system call. This hook is only called when returning the
1155 * message queue identifier for an existing message queue, not when a
1156 * new message queue is created.
1157 * @msq contains the message queue to act upon.
1158 * @msqflg contains the operation control flags.
1159 * Return 0 if permission is granted.
1160 * @msg_queue_msgctl:
1161 * Check permission when a message control operation specified by @cmd
1162 * is to be performed on the message queue @msq.
1163 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
1164 * @msq contains the message queue to act upon. May be NULL.
1165 * @cmd contains the operation to be performed.
1166 * Return 0 if permission is granted.
1167 * @msg_queue_msgsnd:
1168 * Check permission before a message, @msg, is enqueued on the message
1170 * @msq contains the message queue to send message to.
1171 * @msg contains the message to be enqueued.
1172 * @msqflg contains operational flags.
1173 * Return 0 if permission is granted.
1174 * @msg_queue_msgrcv:
1175 * Check permission before a message, @msg, is removed from the message
1176 * queue, @msq. The @target task structure contains a pointer to the
1177 * process that will be receiving the message (not equal to the current
1178 * process when inline receives are being performed).
1179 * @msq contains the message queue to retrieve message from.
1180 * @msg contains the message destination.
1181 * @target contains the task structure for recipient process.
1182 * @type contains the type of message requested.
1183 * @mode contains the operational flags.
1184 * Return 0 if permission is granted.
1186 * Security hooks for System V Shared Memory Segments
1188 * @shm_alloc_security:
1189 * Allocate and attach a security structure to the shp->shm_perm.security
1190 * field. The security field is initialized to NULL when the structure is
1192 * @shp contains the shared memory structure to be modified.
1193 * Return 0 if operation was successful and permission is granted.
1194 * @shm_free_security:
1195 * Deallocate the security struct for this memory segment.
1196 * @shp contains the shared memory structure to be modified.
1198 * Check permission when a shared memory region is requested through the
1199 * shmget system call. This hook is only called when returning the shared
1200 * memory region identifier for an existing region, not when a new shared
1201 * memory region is created.
1202 * @shp contains the shared memory structure to be modified.
1203 * @shmflg contains the operation control flags.
1204 * Return 0 if permission is granted.
1206 * Check permission when a shared memory control operation specified by
1207 * @cmd is to be performed on the shared memory region @shp.
1208 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1209 * @shp contains shared memory structure to be modified.
1210 * @cmd contains the operation to be performed.
1211 * Return 0 if permission is granted.
1213 * Check permissions prior to allowing the shmat system call to attach the
1214 * shared memory segment @shp to the data segment of the calling process.
1215 * The attaching address is specified by @shmaddr.
1216 * @shp contains the shared memory structure to be modified.
1217 * @shmaddr contains the address to attach memory region to.
1218 * @shmflg contains the operational flags.
1219 * Return 0 if permission is granted.
1221 * Security hooks for System V Semaphores
1223 * @sem_alloc_security:
1224 * Allocate and attach a security structure to the sma->sem_perm.security
1225 * field. The security field is initialized to NULL when the structure is
1227 * @sma contains the semaphore structure
1228 * Return 0 if operation was successful and permission is granted.
1229 * @sem_free_security:
1230 * deallocate security struct for this semaphore
1231 * @sma contains the semaphore structure.
1233 * Check permission when a semaphore is requested through the semget
1234 * system call. This hook is only called when returning the semaphore
1235 * identifier for an existing semaphore, not when a new one must be
1237 * @sma contains the semaphore structure.
1238 * @semflg contains the operation control flags.
1239 * Return 0 if permission is granted.
1241 * Check permission when a semaphore operation specified by @cmd is to be
1242 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
1243 * IPC_INFO or SEM_INFO.
1244 * @sma contains the semaphore structure. May be NULL.
1245 * @cmd contains the operation to be performed.
1246 * Return 0 if permission is granted.
1248 * Check permissions before performing operations on members of the
1249 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1251 * @sma contains the semaphore structure.
1252 * @sops contains the operations to perform.
1253 * @nsops contains the number of operations to perform.
1254 * @alter contains the flag indicating whether changes are to be made.
1255 * Return 0 if permission is granted.
1257 * @ptrace_access_check:
1258 * Check permission before allowing the current process to trace the
1260 * Security modules may also want to perform a process tracing check
1261 * during an execve in the set_security or apply_creds hooks of
1262 * tracing check during an execve in the bprm_set_creds hook of
1263 * binprm_security_ops if the process is being traced and its security
1264 * attributes would be changed by the execve.
1265 * @child contains the task_struct structure for the target process.
1266 * @mode contains the PTRACE_MODE flags indicating the form of access.
1267 * Return 0 if permission is granted.
1269 * Check that the @parent process has sufficient permission to trace the
1270 * current process before allowing the current process to present itself
1271 * to the @parent process for tracing.
1272 * The parent process will still have to undergo the ptrace_access_check
1273 * checks before it is allowed to trace this one.
1274 * @parent contains the task_struct structure for debugger process.
1275 * Return 0 if permission is granted.
1277 * Get the @effective, @inheritable, and @permitted capability sets for
1278 * the @target process. The hook may also perform permission checking to
1279 * determine if the current process is allowed to see the capability sets
1280 * of the @target process.
1281 * @target contains the task_struct structure for target process.
1282 * @effective contains the effective capability set.
1283 * @inheritable contains the inheritable capability set.
1284 * @permitted contains the permitted capability set.
1285 * Return 0 if the capability sets were successfully obtained.
1287 * Set the @effective, @inheritable, and @permitted capability sets for
1288 * the current process.
1289 * @new contains the new credentials structure for target process.
1290 * @old contains the current credentials structure for target process.
1291 * @effective contains the effective capability set.
1292 * @inheritable contains the inheritable capability set.
1293 * @permitted contains the permitted capability set.
1294 * Return 0 and update @new if permission is granted.
1296 * Check whether the @tsk process has the @cap capability in the indicated
1298 * @tsk contains the task_struct for the process.
1299 * @cred contains the credentials to use.
1300 * @cap contains the capability <include/linux/capability.h>.
1301 * @audit: Whether to write an audit message or not
1302 * Return 0 if the capability is granted for @tsk.
1304 * Check permission before enabling or disabling process accounting. If
1305 * accounting is being enabled, then @file refers to the open file used to
1306 * store accounting records. If accounting is being disabled, then @file
1308 * @file contains the file structure for the accounting file (may be NULL).
1309 * Return 0 if permission is granted.
1311 * Check permission before accessing the @table sysctl variable in the
1312 * manner specified by @op.
1313 * @table contains the ctl_table structure for the sysctl variable.
1314 * @op contains the operation (001 = search, 002 = write, 004 = read).
1315 * Return 0 if permission is granted.
1317 * Check permission before accessing the kernel message ring or changing
1318 * logging to the console.
1319 * See the syslog(2) manual page for an explanation of the @type values.
1320 * @type contains the type of action.
1321 * @from_file indicates the context of action (if it came from /proc).
1322 * Return 0 if permission is granted.
1324 * Check permission to change the system time.
1325 * struct timespec and timezone are defined in include/linux/time.h
1326 * @ts contains new time
1327 * @tz contains new timezone
1328 * Return 0 if permission is granted.
1329 * @vm_enough_memory:
1330 * Check permissions for allocating a new virtual mapping.
1331 * @mm contains the mm struct it is being added to.
1332 * @pages contains the number of pages.
1333 * Return 0 if permission is granted.
1336 * Convert secid to security context.
1337 * @secid contains the security ID.
1338 * @secdata contains the pointer that stores the converted security context.
1340 * Convert security context to secid.
1341 * @secid contains the pointer to the generated security ID.
1342 * @secdata contains the security context.
1345 * Release the security context.
1346 * @secdata contains the security context.
1347 * @seclen contains the length of the security context.
1349 * Security hooks for Audit
1352 * Allocate and initialize an LSM audit rule structure.
1353 * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
1354 * @op contains the operator the rule uses.
1355 * @rulestr contains the context where the rule will be applied to.
1356 * @lsmrule contains a pointer to receive the result.
1357 * Return 0 if @lsmrule has been successfully set,
1358 * -EINVAL in case of an invalid rule.
1360 * @audit_rule_known:
1361 * Specifies whether given @rule contains any fields related to current LSM.
1362 * @rule contains the audit rule of interest.
1363 * Return 1 in case of relation found, 0 otherwise.
1365 * @audit_rule_match:
1366 * Determine if given @secid matches a rule previously approved
1367 * by @audit_rule_known.
1368 * @secid contains the security id in question.
1369 * @field contains the field which relates to current LSM.
1370 * @op contains the operator that will be used for matching.
1371 * @rule points to the audit rule that will be checked against.
1372 * @actx points to the audit context associated with the check.
1373 * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
1376 * Deallocate the LSM audit rule structure previously allocated by
1378 * @rule contains the allocated rule
1380 * @inode_notifysecctx:
1381 * Notify the security module of what the security context of an inode
1382 * should be. Initializes the incore security context managed by the
1383 * security module for this inode. Example usage: NFS client invokes
1384 * this hook to initialize the security context in its incore inode to the
1385 * value provided by the server for the file when the server returned the
1386 * file's attributes to the client.
1388 * Must be called with inode->i_mutex locked.
1390 * @inode we wish to set the security context of.
1391 * @ctx contains the string which we wish to set in the inode.
1392 * @ctxlen contains the length of @ctx.
1395 * Change the security context of an inode. Updates the
1396 * incore security context managed by the security module and invokes the
1397 * fs code as needed (via __vfs_setxattr_noperm) to update any backing
1398 * xattrs that represent the context. Example usage: NFS server invokes
1399 * this hook to change the security context in its incore inode and on the
1400 * backing filesystem to a value provided by the client on a SETATTR
1403 * Must be called with inode->i_mutex locked.
1405 * @dentry contains the inode we wish to set the security context of.
1406 * @ctx contains the string which we wish to set in the inode.
1407 * @ctxlen contains the length of @ctx.
1410 * Returns a string containing all relavent security context information
1412 * @inode we wish to set the security context of.
1413 * @ctx is a pointer in which to place the allocated security context.
1414 * @ctxlen points to the place to put the length of @ctx.
1415 * This is the main security structure.
1417 struct security_operations {
1418 char name[SECURITY_NAME_MAX + 1];
1420 int (*ptrace_access_check) (struct task_struct *child, unsigned int mode);
1421 int (*ptrace_traceme) (struct task_struct *parent);
1422 int (*capget) (struct task_struct *target,
1423 kernel_cap_t *effective,
1424 kernel_cap_t *inheritable, kernel_cap_t *permitted);
1425 int (*capset) (struct cred *new,
1426 const struct cred *old,
1427 const kernel_cap_t *effective,
1428 const kernel_cap_t *inheritable,
1429 const kernel_cap_t *permitted);
1430 int (*capable) (struct task_struct *tsk, const struct cred *cred,
1431 int cap, int audit);
1432 int (*acct) (struct file *file);
1433 int (*sysctl) (struct ctl_table *table, int op);
1434 int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
1435 int (*quota_on) (struct dentry *dentry);
1436 int (*syslog) (int type, bool from_file);
1437 int (*settime) (struct timespec *ts, struct timezone *tz);
1438 int (*vm_enough_memory) (struct mm_struct *mm, long pages);
1440 int (*bprm_set_creds) (struct linux_binprm *bprm);
1441 int (*bprm_check_security) (struct linux_binprm *bprm);
1442 int (*bprm_secureexec) (struct linux_binprm *bprm);
1443 void (*bprm_committing_creds) (struct linux_binprm *bprm);
1444 void (*bprm_committed_creds) (struct linux_binprm *bprm);
1446 int (*sb_alloc_security) (struct super_block *sb);
1447 void (*sb_free_security) (struct super_block *sb);
1448 int (*sb_copy_data) (char *orig, char *copy);
1449 int (*sb_kern_mount) (struct super_block *sb, int flags, void *data);
1450 int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
1451 int (*sb_statfs) (struct dentry *dentry);
1452 int (*sb_mount) (char *dev_name, struct path *path,
1453 char *type, unsigned long flags, void *data);
1454 int (*sb_umount) (struct vfsmount *mnt, int flags);
1455 int (*sb_pivotroot) (struct path *old_path,
1456 struct path *new_path);
1457 int (*sb_set_mnt_opts) (struct super_block *sb,
1458 struct security_mnt_opts *opts);
1459 void (*sb_clone_mnt_opts) (const struct super_block *oldsb,
1460 struct super_block *newsb);
1461 int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
1463 #ifdef CONFIG_SECURITY_PATH
1464 int (*path_unlink) (struct path *dir, struct dentry *dentry);
1465 int (*path_mkdir) (struct path *dir, struct dentry *dentry, int mode);
1466 int (*path_rmdir) (struct path *dir, struct dentry *dentry);
1467 int (*path_mknod) (struct path *dir, struct dentry *dentry, int mode,
1469 int (*path_truncate) (struct path *path, loff_t length,
1470 unsigned int time_attrs);
1471 int (*path_symlink) (struct path *dir, struct dentry *dentry,
1472 const char *old_name);
1473 int (*path_link) (struct dentry *old_dentry, struct path *new_dir,
1474 struct dentry *new_dentry);
1475 int (*path_rename) (struct path *old_dir, struct dentry *old_dentry,
1476 struct path *new_dir, struct dentry *new_dentry);
1477 int (*path_chmod) (struct dentry *dentry, struct vfsmount *mnt,
1479 int (*path_chown) (struct path *path, uid_t uid, gid_t gid);
1480 int (*path_chroot) (struct path *path);
1483 int (*inode_alloc_security) (struct inode *inode);
1484 void (*inode_free_security) (struct inode *inode);
1485 int (*inode_init_security) (struct inode *inode, struct inode *dir,
1486 char **name, void **value, size_t *len);
1487 int (*inode_create) (struct inode *dir,
1488 struct dentry *dentry, int mode);
1489 int (*inode_link) (struct dentry *old_dentry,
1490 struct inode *dir, struct dentry *new_dentry);
1491 int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
1492 int (*inode_symlink) (struct inode *dir,
1493 struct dentry *dentry, const char *old_name);
1494 int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, int mode);
1495 int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
1496 int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
1497 int mode, dev_t dev);
1498 int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
1499 struct inode *new_dir, struct dentry *new_dentry);
1500 int (*inode_readlink) (struct dentry *dentry);
1501 int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
1502 int (*inode_permission) (struct inode *inode, int mask);
1503 int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
1504 int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
1505 void (*inode_delete) (struct inode *inode);
1506 int (*inode_setxattr) (struct dentry *dentry, const char *name,
1507 const void *value, size_t size, int flags);
1508 void (*inode_post_setxattr) (struct dentry *dentry, const char *name,
1509 const void *value, size_t size, int flags);
1510 int (*inode_getxattr) (struct dentry *dentry, const char *name);
1511 int (*inode_listxattr) (struct dentry *dentry);
1512 int (*inode_removexattr) (struct dentry *dentry, const char *name);
1513 int (*inode_need_killpriv) (struct dentry *dentry);
1514 int (*inode_killpriv) (struct dentry *dentry);
1515 int (*inode_getsecurity) (const struct inode *inode, const char *name, void **buffer, bool alloc);
1516 int (*inode_setsecurity) (struct inode *inode, const char *name, const void *value, size_t size, int flags);
1517 int (*inode_listsecurity) (struct inode *inode, char *buffer, size_t buffer_size);
1518 void (*inode_getsecid) (const struct inode *inode, u32 *secid);
1520 int (*file_permission) (struct file *file, int mask);
1521 int (*file_alloc_security) (struct file *file);
1522 void (*file_free_security) (struct file *file);
1523 int (*file_ioctl) (struct file *file, unsigned int cmd,
1525 int (*file_mmap) (struct file *file,
1526 unsigned long reqprot, unsigned long prot,
1527 unsigned long flags, unsigned long addr,
1528 unsigned long addr_only);
1529 int (*file_mprotect) (struct vm_area_struct *vma,
1530 unsigned long reqprot,
1531 unsigned long prot);
1532 int (*file_lock) (struct file *file, unsigned int cmd);
1533 int (*file_fcntl) (struct file *file, unsigned int cmd,
1535 int (*file_set_fowner) (struct file *file);
1536 int (*file_send_sigiotask) (struct task_struct *tsk,
1537 struct fown_struct *fown, int sig);
1538 int (*file_receive) (struct file *file);
1539 int (*dentry_open) (struct file *file, const struct cred *cred);
1541 int (*task_create) (unsigned long clone_flags);
1542 int (*cred_alloc_blank) (struct cred *cred, gfp_t gfp);
1543 void (*cred_free) (struct cred *cred);
1544 int (*cred_prepare)(struct cred *new, const struct cred *old,
1546 void (*cred_commit)(struct cred *new, const struct cred *old);
1547 void (*cred_transfer)(struct cred *new, const struct cred *old);
1548 int (*kernel_act_as)(struct cred *new, u32 secid);
1549 int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
1550 int (*kernel_module_request)(char *kmod_name);
1551 int (*task_setuid) (uid_t id0, uid_t id1, uid_t id2, int flags);
1552 int (*task_fix_setuid) (struct cred *new, const struct cred *old,
1554 int (*task_setgid) (gid_t id0, gid_t id1, gid_t id2, int flags);
1555 int (*task_setpgid) (struct task_struct *p, pid_t pgid);
1556 int (*task_getpgid) (struct task_struct *p);
1557 int (*task_getsid) (struct task_struct *p);
1558 void (*task_getsecid) (struct task_struct *p, u32 *secid);
1559 int (*task_setgroups) (struct group_info *group_info);
1560 int (*task_setnice) (struct task_struct *p, int nice);
1561 int (*task_setioprio) (struct task_struct *p, int ioprio);
1562 int (*task_getioprio) (struct task_struct *p);
1563 int (*task_setrlimit) (unsigned int resource, struct rlimit *new_rlim);
1564 int (*task_setscheduler) (struct task_struct *p, int policy,
1565 struct sched_param *lp);
1566 int (*task_getscheduler) (struct task_struct *p);
1567 int (*task_movememory) (struct task_struct *p);
1568 int (*task_kill) (struct task_struct *p,
1569 struct siginfo *info, int sig, u32 secid);
1570 int (*task_wait) (struct task_struct *p);
1571 int (*task_prctl) (int option, unsigned long arg2,
1572 unsigned long arg3, unsigned long arg4,
1573 unsigned long arg5);
1574 void (*task_to_inode) (struct task_struct *p, struct inode *inode);
1576 int (*ipc_permission) (struct kern_ipc_perm *ipcp, short flag);
1577 void (*ipc_getsecid) (struct kern_ipc_perm *ipcp, u32 *secid);
1579 int (*msg_msg_alloc_security) (struct msg_msg *msg);
1580 void (*msg_msg_free_security) (struct msg_msg *msg);
1582 int (*msg_queue_alloc_security) (struct msg_queue *msq);
1583 void (*msg_queue_free_security) (struct msg_queue *msq);
1584 int (*msg_queue_associate) (struct msg_queue *msq, int msqflg);
1585 int (*msg_queue_msgctl) (struct msg_queue *msq, int cmd);
1586 int (*msg_queue_msgsnd) (struct msg_queue *msq,
1587 struct msg_msg *msg, int msqflg);
1588 int (*msg_queue_msgrcv) (struct msg_queue *msq,
1589 struct msg_msg *msg,
1590 struct task_struct *target,
1591 long type, int mode);
1593 int (*shm_alloc_security) (struct shmid_kernel *shp);
1594 void (*shm_free_security) (struct shmid_kernel *shp);
1595 int (*shm_associate) (struct shmid_kernel *shp, int shmflg);
1596 int (*shm_shmctl) (struct shmid_kernel *shp, int cmd);
1597 int (*shm_shmat) (struct shmid_kernel *shp,
1598 char __user *shmaddr, int shmflg);
1600 int (*sem_alloc_security) (struct sem_array *sma);
1601 void (*sem_free_security) (struct sem_array *sma);
1602 int (*sem_associate) (struct sem_array *sma, int semflg);
1603 int (*sem_semctl) (struct sem_array *sma, int cmd);
1604 int (*sem_semop) (struct sem_array *sma,
1605 struct sembuf *sops, unsigned nsops, int alter);
1607 int (*netlink_send) (struct sock *sk, struct sk_buff *skb);
1608 int (*netlink_recv) (struct sk_buff *skb, int cap);
1610 void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1612 int (*getprocattr) (struct task_struct *p, char *name, char **value);
1613 int (*setprocattr) (struct task_struct *p, char *name, void *value, size_t size);
1614 int (*secid_to_secctx) (u32 secid, char **secdata, u32 *seclen);
1615 int (*secctx_to_secid) (const char *secdata, u32 seclen, u32 *secid);
1616 void (*release_secctx) (char *secdata, u32 seclen);
1618 int (*inode_notifysecctx)(struct inode *inode, void *ctx, u32 ctxlen);
1619 int (*inode_setsecctx)(struct dentry *dentry, void *ctx, u32 ctxlen);
1620 int (*inode_getsecctx)(struct inode *inode, void **ctx, u32 *ctxlen);
1622 #ifdef CONFIG_SECURITY_NETWORK
1623 int (*unix_stream_connect) (struct socket *sock,
1624 struct socket *other, struct sock *newsk);
1625 int (*unix_may_send) (struct socket *sock, struct socket *other);
1627 int (*socket_create) (int family, int type, int protocol, int kern);
1628 int (*socket_post_create) (struct socket *sock, int family,
1629 int type, int protocol, int kern);
1630 int (*socket_bind) (struct socket *sock,
1631 struct sockaddr *address, int addrlen);
1632 int (*socket_connect) (struct socket *sock,
1633 struct sockaddr *address, int addrlen);
1634 int (*socket_listen) (struct socket *sock, int backlog);
1635 int (*socket_accept) (struct socket *sock, struct socket *newsock);
1636 int (*socket_sendmsg) (struct socket *sock,
1637 struct msghdr *msg, int size);
1638 int (*socket_recvmsg) (struct socket *sock,
1639 struct msghdr *msg, int size, int flags);
1640 int (*socket_getsockname) (struct socket *sock);
1641 int (*socket_getpeername) (struct socket *sock);
1642 int (*socket_getsockopt) (struct socket *sock, int level, int optname);
1643 int (*socket_setsockopt) (struct socket *sock, int level, int optname);
1644 int (*socket_shutdown) (struct socket *sock, int how);
1645 int (*socket_sock_rcv_skb) (struct sock *sk, struct sk_buff *skb);
1646 int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
1647 int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
1648 int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
1649 void (*sk_free_security) (struct sock *sk);
1650 void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
1651 void (*sk_getsecid) (struct sock *sk, u32 *secid);
1652 void (*sock_graft) (struct sock *sk, struct socket *parent);
1653 int (*inet_conn_request) (struct sock *sk, struct sk_buff *skb,
1654 struct request_sock *req);
1655 void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req);
1656 void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb);
1657 void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
1658 int (*tun_dev_create)(void);
1659 void (*tun_dev_post_create)(struct sock *sk);
1660 int (*tun_dev_attach)(struct sock *sk);
1661 #endif /* CONFIG_SECURITY_NETWORK */
1663 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1664 int (*xfrm_policy_alloc_security) (struct xfrm_sec_ctx **ctxp,
1665 struct xfrm_user_sec_ctx *sec_ctx);
1666 int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
1667 void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
1668 int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
1669 int (*xfrm_state_alloc_security) (struct xfrm_state *x,
1670 struct xfrm_user_sec_ctx *sec_ctx,
1672 void (*xfrm_state_free_security) (struct xfrm_state *x);
1673 int (*xfrm_state_delete_security) (struct xfrm_state *x);
1674 int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1675 int (*xfrm_state_pol_flow_match) (struct xfrm_state *x,
1676 struct xfrm_policy *xp,
1678 int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall);
1679 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1681 /* key management security hooks */
1683 int (*key_alloc) (struct key *key, const struct cred *cred, unsigned long flags);
1684 void (*key_free) (struct key *key);
1685 int (*key_permission) (key_ref_t key_ref,
1686 const struct cred *cred,
1688 int (*key_getsecurity)(struct key *key, char **_buffer);
1689 int (*key_session_to_parent)(const struct cred *cred,
1690 const struct cred *parent_cred,
1692 #endif /* CONFIG_KEYS */
1695 int (*audit_rule_init) (u32 field, u32 op, char *rulestr, void **lsmrule);
1696 int (*audit_rule_known) (struct audit_krule *krule);
1697 int (*audit_rule_match) (u32 secid, u32 field, u32 op, void *lsmrule,
1698 struct audit_context *actx);
1699 void (*audit_rule_free) (void *lsmrule);
1700 #endif /* CONFIG_AUDIT */
1704 extern int security_init(void);
1705 extern int security_module_enable(struct security_operations *ops);
1706 extern int register_security(struct security_operations *ops);
1708 /* Security operations */
1709 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
1710 int security_ptrace_traceme(struct task_struct *parent);
1711 int security_capget(struct task_struct *target,
1712 kernel_cap_t *effective,
1713 kernel_cap_t *inheritable,
1714 kernel_cap_t *permitted);
1715 int security_capset(struct cred *new, const struct cred *old,
1716 const kernel_cap_t *effective,
1717 const kernel_cap_t *inheritable,
1718 const kernel_cap_t *permitted);
1719 int security_capable(int cap);
1720 int security_real_capable(struct task_struct *tsk, int cap);
1721 int security_real_capable_noaudit(struct task_struct *tsk, int cap);
1722 int security_acct(struct file *file);
1723 int security_sysctl(struct ctl_table *table, int op);
1724 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
1725 int security_quota_on(struct dentry *dentry);
1726 int security_syslog(int type, bool from_file);
1727 int security_settime(struct timespec *ts, struct timezone *tz);
1728 int security_vm_enough_memory(long pages);
1729 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
1730 int security_vm_enough_memory_kern(long pages);
1731 int security_bprm_set_creds(struct linux_binprm *bprm);
1732 int security_bprm_check(struct linux_binprm *bprm);
1733 void security_bprm_committing_creds(struct linux_binprm *bprm);
1734 void security_bprm_committed_creds(struct linux_binprm *bprm);
1735 int security_bprm_secureexec(struct linux_binprm *bprm);
1736 int security_sb_alloc(struct super_block *sb);
1737 void security_sb_free(struct super_block *sb);
1738 int security_sb_copy_data(char *orig, char *copy);
1739 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
1740 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
1741 int security_sb_statfs(struct dentry *dentry);
1742 int security_sb_mount(char *dev_name, struct path *path,
1743 char *type, unsigned long flags, void *data);
1744 int security_sb_umount(struct vfsmount *mnt, int flags);
1745 int security_sb_pivotroot(struct path *old_path, struct path *new_path);
1746 int security_sb_set_mnt_opts(struct super_block *sb, struct security_mnt_opts *opts);
1747 void security_sb_clone_mnt_opts(const struct super_block *oldsb,
1748 struct super_block *newsb);
1749 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
1751 int security_inode_alloc(struct inode *inode);
1752 void security_inode_free(struct inode *inode);
1753 int security_inode_init_security(struct inode *inode, struct inode *dir,
1754 char **name, void **value, size_t *len);
1755 int security_inode_create(struct inode *dir, struct dentry *dentry, int mode);
1756 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1757 struct dentry *new_dentry);
1758 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
1759 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
1760 const char *old_name);
1761 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode);
1762 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
1763 int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev);
1764 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
1765 struct inode *new_dir, struct dentry *new_dentry);
1766 int security_inode_readlink(struct dentry *dentry);
1767 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
1768 int security_inode_permission(struct inode *inode, int mask);
1769 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
1770 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
1771 void security_inode_delete(struct inode *inode);
1772 int security_inode_setxattr(struct dentry *dentry, const char *name,
1773 const void *value, size_t size, int flags);
1774 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1775 const void *value, size_t size, int flags);
1776 int security_inode_getxattr(struct dentry *dentry, const char *name);
1777 int security_inode_listxattr(struct dentry *dentry);
1778 int security_inode_removexattr(struct dentry *dentry, const char *name);
1779 int security_inode_need_killpriv(struct dentry *dentry);
1780 int security_inode_killpriv(struct dentry *dentry);
1781 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
1782 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1783 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
1784 void security_inode_getsecid(const struct inode *inode, u32 *secid);
1785 int security_file_permission(struct file *file, int mask);
1786 int security_file_alloc(struct file *file);
1787 void security_file_free(struct file *file);
1788 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
1789 int security_file_mmap(struct file *file, unsigned long reqprot,
1790 unsigned long prot, unsigned long flags,
1791 unsigned long addr, unsigned long addr_only);
1792 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1793 unsigned long prot);
1794 int security_file_lock(struct file *file, unsigned int cmd);
1795 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
1796 int security_file_set_fowner(struct file *file);
1797 int security_file_send_sigiotask(struct task_struct *tsk,
1798 struct fown_struct *fown, int sig);
1799 int security_file_receive(struct file *file);
1800 int security_dentry_open(struct file *file, const struct cred *cred);
1801 int security_task_create(unsigned long clone_flags);
1802 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
1803 void security_cred_free(struct cred *cred);
1804 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
1805 void security_commit_creds(struct cred *new, const struct cred *old);
1806 void security_transfer_creds(struct cred *new, const struct cred *old);
1807 int security_kernel_act_as(struct cred *new, u32 secid);
1808 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
1809 int security_kernel_module_request(char *kmod_name);
1810 int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags);
1811 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1813 int security_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags);
1814 int security_task_setpgid(struct task_struct *p, pid_t pgid);
1815 int security_task_getpgid(struct task_struct *p);
1816 int security_task_getsid(struct task_struct *p);
1817 void security_task_getsecid(struct task_struct *p, u32 *secid);
1818 int security_task_setgroups(struct group_info *group_info);
1819 int security_task_setnice(struct task_struct *p, int nice);
1820 int security_task_setioprio(struct task_struct *p, int ioprio);
1821 int security_task_getioprio(struct task_struct *p);
1822 int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim);
1823 int security_task_setscheduler(struct task_struct *p,
1824 int policy, struct sched_param *lp);
1825 int security_task_getscheduler(struct task_struct *p);
1826 int security_task_movememory(struct task_struct *p);
1827 int security_task_kill(struct task_struct *p, struct siginfo *info,
1828 int sig, u32 secid);
1829 int security_task_wait(struct task_struct *p);
1830 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1831 unsigned long arg4, unsigned long arg5);
1832 void security_task_to_inode(struct task_struct *p, struct inode *inode);
1833 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
1834 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
1835 int security_msg_msg_alloc(struct msg_msg *msg);
1836 void security_msg_msg_free(struct msg_msg *msg);
1837 int security_msg_queue_alloc(struct msg_queue *msq);
1838 void security_msg_queue_free(struct msg_queue *msq);
1839 int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
1840 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
1841 int security_msg_queue_msgsnd(struct msg_queue *msq,
1842 struct msg_msg *msg, int msqflg);
1843 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1844 struct task_struct *target, long type, int mode);
1845 int security_shm_alloc(struct shmid_kernel *shp);
1846 void security_shm_free(struct shmid_kernel *shp);
1847 int security_shm_associate(struct shmid_kernel *shp, int shmflg);
1848 int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
1849 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
1850 int security_sem_alloc(struct sem_array *sma);
1851 void security_sem_free(struct sem_array *sma);
1852 int security_sem_associate(struct sem_array *sma, int semflg);
1853 int security_sem_semctl(struct sem_array *sma, int cmd);
1854 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1855 unsigned nsops, int alter);
1856 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
1857 int security_getprocattr(struct task_struct *p, char *name, char **value);
1858 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
1859 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
1860 int security_netlink_recv(struct sk_buff *skb, int cap);
1861 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
1862 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
1863 void security_release_secctx(char *secdata, u32 seclen);
1865 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
1866 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
1867 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
1868 #else /* CONFIG_SECURITY */
1869 struct security_mnt_opts {
1872 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
1876 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
1881 * This is the default capabilities functionality. Most of these functions
1882 * are just stubbed out, but a few must call the proper capable code.
1885 static inline int security_init(void)
1890 static inline int security_ptrace_access_check(struct task_struct *child,
1893 return cap_ptrace_access_check(child, mode);
1896 static inline int security_ptrace_traceme(struct task_struct *parent)
1898 return cap_ptrace_traceme(parent);
1901 static inline int security_capget(struct task_struct *target,
1902 kernel_cap_t *effective,
1903 kernel_cap_t *inheritable,
1904 kernel_cap_t *permitted)
1906 return cap_capget(target, effective, inheritable, permitted);
1909 static inline int security_capset(struct cred *new,
1910 const struct cred *old,
1911 const kernel_cap_t *effective,
1912 const kernel_cap_t *inheritable,
1913 const kernel_cap_t *permitted)
1915 return cap_capset(new, old, effective, inheritable, permitted);
1918 static inline int security_capable(int cap)
1920 return cap_capable(current, current_cred(), cap, SECURITY_CAP_AUDIT);
1923 static inline int security_real_capable(struct task_struct *tsk, int cap)
1928 ret = cap_capable(tsk, __task_cred(tsk), cap, SECURITY_CAP_AUDIT);
1934 int security_real_capable_noaudit(struct task_struct *tsk, int cap)
1939 ret = cap_capable(tsk, __task_cred(tsk), cap,
1940 SECURITY_CAP_NOAUDIT);
1945 static inline int security_acct(struct file *file)
1950 static inline int security_sysctl(struct ctl_table *table, int op)
1955 static inline int security_quotactl(int cmds, int type, int id,
1956 struct super_block *sb)
1961 static inline int security_quota_on(struct dentry *dentry)
1966 static inline int security_syslog(int type, bool from_file)
1968 return cap_syslog(type, from_file);
1971 static inline int security_settime(struct timespec *ts, struct timezone *tz)
1973 return cap_settime(ts, tz);
1976 static inline int security_vm_enough_memory(long pages)
1978 WARN_ON(current->mm == NULL);
1979 return cap_vm_enough_memory(current->mm, pages);
1982 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
1984 WARN_ON(mm == NULL);
1985 return cap_vm_enough_memory(mm, pages);
1988 static inline int security_vm_enough_memory_kern(long pages)
1990 /* If current->mm is a kernel thread then we will pass NULL,
1991 for this specific case that is fine */
1992 return cap_vm_enough_memory(current->mm, pages);
1995 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
1997 return cap_bprm_set_creds(bprm);
2000 static inline int security_bprm_check(struct linux_binprm *bprm)
2005 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
2009 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
2013 static inline int security_bprm_secureexec(struct linux_binprm *bprm)
2015 return cap_bprm_secureexec(bprm);
2018 static inline int security_sb_alloc(struct super_block *sb)
2023 static inline void security_sb_free(struct super_block *sb)
2026 static inline int security_sb_copy_data(char *orig, char *copy)
2031 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
2036 static inline int security_sb_show_options(struct seq_file *m,
2037 struct super_block *sb)
2042 static inline int security_sb_statfs(struct dentry *dentry)
2047 static inline int security_sb_mount(char *dev_name, struct path *path,
2048 char *type, unsigned long flags,
2054 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
2059 static inline int security_sb_pivotroot(struct path *old_path,
2060 struct path *new_path)
2065 static inline int security_sb_set_mnt_opts(struct super_block *sb,
2066 struct security_mnt_opts *opts)
2071 static inline void security_sb_clone_mnt_opts(const struct super_block *oldsb,
2072 struct super_block *newsb)
2075 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
2080 static inline int security_inode_alloc(struct inode *inode)
2085 static inline void security_inode_free(struct inode *inode)
2088 static inline int security_inode_init_security(struct inode *inode,
2097 static inline int security_inode_create(struct inode *dir,
2098 struct dentry *dentry,
2104 static inline int security_inode_link(struct dentry *old_dentry,
2106 struct dentry *new_dentry)
2111 static inline int security_inode_unlink(struct inode *dir,
2112 struct dentry *dentry)
2117 static inline int security_inode_symlink(struct inode *dir,
2118 struct dentry *dentry,
2119 const char *old_name)
2124 static inline int security_inode_mkdir(struct inode *dir,
2125 struct dentry *dentry,
2131 static inline int security_inode_rmdir(struct inode *dir,
2132 struct dentry *dentry)
2137 static inline int security_inode_mknod(struct inode *dir,
2138 struct dentry *dentry,
2139 int mode, dev_t dev)
2144 static inline int security_inode_rename(struct inode *old_dir,
2145 struct dentry *old_dentry,
2146 struct inode *new_dir,
2147 struct dentry *new_dentry)
2152 static inline int security_inode_readlink(struct dentry *dentry)
2157 static inline int security_inode_follow_link(struct dentry *dentry,
2158 struct nameidata *nd)
2163 static inline int security_inode_permission(struct inode *inode, int mask)
2168 static inline int security_inode_setattr(struct dentry *dentry,
2174 static inline int security_inode_getattr(struct vfsmount *mnt,
2175 struct dentry *dentry)
2180 static inline void security_inode_delete(struct inode *inode)
2183 static inline int security_inode_setxattr(struct dentry *dentry,
2184 const char *name, const void *value, size_t size, int flags)
2186 return cap_inode_setxattr(dentry, name, value, size, flags);
2189 static inline void security_inode_post_setxattr(struct dentry *dentry,
2190 const char *name, const void *value, size_t size, int flags)
2193 static inline int security_inode_getxattr(struct dentry *dentry,
2199 static inline int security_inode_listxattr(struct dentry *dentry)
2204 static inline int security_inode_removexattr(struct dentry *dentry,
2207 return cap_inode_removexattr(dentry, name);
2210 static inline int security_inode_need_killpriv(struct dentry *dentry)
2212 return cap_inode_need_killpriv(dentry);
2215 static inline int security_inode_killpriv(struct dentry *dentry)
2217 return cap_inode_killpriv(dentry);
2220 static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
2225 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
2230 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
2235 static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
2240 static inline int security_file_permission(struct file *file, int mask)
2245 static inline int security_file_alloc(struct file *file)
2250 static inline void security_file_free(struct file *file)
2253 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
2259 static inline int security_file_mmap(struct file *file, unsigned long reqprot,
2261 unsigned long flags,
2263 unsigned long addr_only)
2265 return cap_file_mmap(file, reqprot, prot, flags, addr, addr_only);
2268 static inline int security_file_mprotect(struct vm_area_struct *vma,
2269 unsigned long reqprot,
2275 static inline int security_file_lock(struct file *file, unsigned int cmd)
2280 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
2286 static inline int security_file_set_fowner(struct file *file)
2291 static inline int security_file_send_sigiotask(struct task_struct *tsk,
2292 struct fown_struct *fown,
2298 static inline int security_file_receive(struct file *file)
2303 static inline int security_dentry_open(struct file *file,
2304 const struct cred *cred)
2309 static inline int security_task_create(unsigned long clone_flags)
2314 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
2319 static inline void security_cred_free(struct cred *cred)
2322 static inline int security_prepare_creds(struct cred *new,
2323 const struct cred *old,
2329 static inline void security_commit_creds(struct cred *new,
2330 const struct cred *old)
2334 static inline void security_transfer_creds(struct cred *new,
2335 const struct cred *old)
2339 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
2344 static inline int security_kernel_create_files_as(struct cred *cred,
2345 struct inode *inode)
2350 static inline int security_kernel_module_request(char *kmod_name)
2355 static inline int security_task_setuid(uid_t id0, uid_t id1, uid_t id2,
2361 static inline int security_task_fix_setuid(struct cred *new,
2362 const struct cred *old,
2365 return cap_task_fix_setuid(new, old, flags);
2368 static inline int security_task_setgid(gid_t id0, gid_t id1, gid_t id2,
2374 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
2379 static inline int security_task_getpgid(struct task_struct *p)
2384 static inline int security_task_getsid(struct task_struct *p)
2389 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
2394 static inline int security_task_setgroups(struct group_info *group_info)
2399 static inline int security_task_setnice(struct task_struct *p, int nice)
2401 return cap_task_setnice(p, nice);
2404 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
2406 return cap_task_setioprio(p, ioprio);
2409 static inline int security_task_getioprio(struct task_struct *p)
2414 static inline int security_task_setrlimit(unsigned int resource,
2415 struct rlimit *new_rlim)
2420 static inline int security_task_setscheduler(struct task_struct *p,
2422 struct sched_param *lp)
2424 return cap_task_setscheduler(p, policy, lp);
2427 static inline int security_task_getscheduler(struct task_struct *p)
2432 static inline int security_task_movememory(struct task_struct *p)
2437 static inline int security_task_kill(struct task_struct *p,
2438 struct siginfo *info, int sig,
2444 static inline int security_task_wait(struct task_struct *p)
2449 static inline int security_task_prctl(int option, unsigned long arg2,
2454 return cap_task_prctl(option, arg2, arg3, arg3, arg5);
2457 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
2460 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
2466 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
2471 static inline int security_msg_msg_alloc(struct msg_msg *msg)
2476 static inline void security_msg_msg_free(struct msg_msg *msg)
2479 static inline int security_msg_queue_alloc(struct msg_queue *msq)
2484 static inline void security_msg_queue_free(struct msg_queue *msq)
2487 static inline int security_msg_queue_associate(struct msg_queue *msq,
2493 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
2498 static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
2499 struct msg_msg *msg, int msqflg)
2504 static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
2505 struct msg_msg *msg,
2506 struct task_struct *target,
2507 long type, int mode)
2512 static inline int security_shm_alloc(struct shmid_kernel *shp)
2517 static inline void security_shm_free(struct shmid_kernel *shp)
2520 static inline int security_shm_associate(struct shmid_kernel *shp,
2526 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
2531 static inline int security_shm_shmat(struct shmid_kernel *shp,
2532 char __user *shmaddr, int shmflg)
2537 static inline int security_sem_alloc(struct sem_array *sma)
2542 static inline void security_sem_free(struct sem_array *sma)
2545 static inline int security_sem_associate(struct sem_array *sma, int semflg)
2550 static inline int security_sem_semctl(struct sem_array *sma, int cmd)
2555 static inline int security_sem_semop(struct sem_array *sma,
2556 struct sembuf *sops, unsigned nsops,
2562 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
2565 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
2570 static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2575 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
2577 return cap_netlink_send(sk, skb);
2580 static inline int security_netlink_recv(struct sk_buff *skb, int cap)
2582 return cap_netlink_recv(skb, cap);
2585 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2590 static inline int security_secctx_to_secid(const char *secdata,
2597 static inline void security_release_secctx(char *secdata, u32 seclen)
2601 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
2605 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
2609 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
2613 #endif /* CONFIG_SECURITY */
2615 #ifdef CONFIG_SECURITY_NETWORK
2617 int security_unix_stream_connect(struct socket *sock, struct socket *other,
2618 struct sock *newsk);
2619 int security_unix_may_send(struct socket *sock, struct socket *other);
2620 int security_socket_create(int family, int type, int protocol, int kern);
2621 int security_socket_post_create(struct socket *sock, int family,
2622 int type, int protocol, int kern);
2623 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
2624 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
2625 int security_socket_listen(struct socket *sock, int backlog);
2626 int security_socket_accept(struct socket *sock, struct socket *newsock);
2627 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
2628 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2629 int size, int flags);
2630 int security_socket_getsockname(struct socket *sock);
2631 int security_socket_getpeername(struct socket *sock);
2632 int security_socket_getsockopt(struct socket *sock, int level, int optname);
2633 int security_socket_setsockopt(struct socket *sock, int level, int optname);
2634 int security_socket_shutdown(struct socket *sock, int how);
2635 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
2636 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2637 int __user *optlen, unsigned len);
2638 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
2639 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
2640 void security_sk_free(struct sock *sk);
2641 void security_sk_clone(const struct sock *sk, struct sock *newsk);
2642 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
2643 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
2644 void security_sock_graft(struct sock*sk, struct socket *parent);
2645 int security_inet_conn_request(struct sock *sk,
2646 struct sk_buff *skb, struct request_sock *req);
2647 void security_inet_csk_clone(struct sock *newsk,
2648 const struct request_sock *req);
2649 void security_inet_conn_established(struct sock *sk,
2650 struct sk_buff *skb);
2651 int security_tun_dev_create(void);
2652 void security_tun_dev_post_create(struct sock *sk);
2653 int security_tun_dev_attach(struct sock *sk);
2655 #else /* CONFIG_SECURITY_NETWORK */
2656 static inline int security_unix_stream_connect(struct socket *sock,
2657 struct socket *other,
2663 static inline int security_unix_may_send(struct socket *sock,
2664 struct socket *other)
2669 static inline int security_socket_create(int family, int type,
2670 int protocol, int kern)
2675 static inline int security_socket_post_create(struct socket *sock,
2678 int protocol, int kern)
2683 static inline int security_socket_bind(struct socket *sock,
2684 struct sockaddr *address,
2690 static inline int security_socket_connect(struct socket *sock,
2691 struct sockaddr *address,
2697 static inline int security_socket_listen(struct socket *sock, int backlog)
2702 static inline int security_socket_accept(struct socket *sock,
2703 struct socket *newsock)
2708 static inline int security_socket_sendmsg(struct socket *sock,
2709 struct msghdr *msg, int size)
2714 static inline int security_socket_recvmsg(struct socket *sock,
2715 struct msghdr *msg, int size,
2721 static inline int security_socket_getsockname(struct socket *sock)
2726 static inline int security_socket_getpeername(struct socket *sock)
2731 static inline int security_socket_getsockopt(struct socket *sock,
2732 int level, int optname)
2737 static inline int security_socket_setsockopt(struct socket *sock,
2738 int level, int optname)
2743 static inline int security_socket_shutdown(struct socket *sock, int how)
2747 static inline int security_sock_rcv_skb(struct sock *sk,
2748 struct sk_buff *skb)
2753 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2754 int __user *optlen, unsigned len)
2756 return -ENOPROTOOPT;
2759 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
2761 return -ENOPROTOOPT;
2764 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2769 static inline void security_sk_free(struct sock *sk)
2773 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
2777 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
2781 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2785 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
2789 static inline int security_inet_conn_request(struct sock *sk,
2790 struct sk_buff *skb, struct request_sock *req)
2795 static inline void security_inet_csk_clone(struct sock *newsk,
2796 const struct request_sock *req)
2800 static inline void security_inet_conn_established(struct sock *sk,
2801 struct sk_buff *skb)
2805 static inline int security_tun_dev_create(void)
2810 static inline void security_tun_dev_post_create(struct sock *sk)
2814 static inline int security_tun_dev_attach(struct sock *sk)
2818 #endif /* CONFIG_SECURITY_NETWORK */
2820 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2822 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx);
2823 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
2824 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
2825 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
2826 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
2827 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2828 struct xfrm_sec_ctx *polsec, u32 secid);
2829 int security_xfrm_state_delete(struct xfrm_state *x);
2830 void security_xfrm_state_free(struct xfrm_state *x);
2831 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
2832 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2833 struct xfrm_policy *xp, struct flowi *fl);
2834 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
2835 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
2837 #else /* CONFIG_SECURITY_NETWORK_XFRM */
2839 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
2844 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
2849 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
2853 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
2858 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
2859 struct xfrm_user_sec_ctx *sec_ctx)
2864 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2865 struct xfrm_sec_ctx *polsec, u32 secid)
2870 static inline void security_xfrm_state_free(struct xfrm_state *x)
2874 static inline int security_xfrm_state_delete(struct xfrm_state *x)
2879 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
2884 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2885 struct xfrm_policy *xp, struct flowi *fl)
2890 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
2895 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2899 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2901 #ifdef CONFIG_SECURITY_PATH
2902 int security_path_unlink(struct path *dir, struct dentry *dentry);
2903 int security_path_mkdir(struct path *dir, struct dentry *dentry, int mode);
2904 int security_path_rmdir(struct path *dir, struct dentry *dentry);
2905 int security_path_mknod(struct path *dir, struct dentry *dentry, int mode,
2907 int security_path_truncate(struct path *path, loff_t length,
2908 unsigned int time_attrs);
2909 int security_path_symlink(struct path *dir, struct dentry *dentry,
2910 const char *old_name);
2911 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
2912 struct dentry *new_dentry);
2913 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
2914 struct path *new_dir, struct dentry *new_dentry);
2915 int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
2917 int security_path_chown(struct path *path, uid_t uid, gid_t gid);
2918 int security_path_chroot(struct path *path);
2919 #else /* CONFIG_SECURITY_PATH */
2920 static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
2925 static inline int security_path_mkdir(struct path *dir, struct dentry *dentry,
2931 static inline int security_path_rmdir(struct path *dir, struct dentry *dentry)
2936 static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
2937 int mode, unsigned int dev)
2942 static inline int security_path_truncate(struct path *path, loff_t length,
2943 unsigned int time_attrs)
2948 static inline int security_path_symlink(struct path *dir, struct dentry *dentry,
2949 const char *old_name)
2954 static inline int security_path_link(struct dentry *old_dentry,
2955 struct path *new_dir,
2956 struct dentry *new_dentry)
2961 static inline int security_path_rename(struct path *old_dir,
2962 struct dentry *old_dentry,
2963 struct path *new_dir,
2964 struct dentry *new_dentry)
2969 static inline int security_path_chmod(struct dentry *dentry,
2970 struct vfsmount *mnt,
2976 static inline int security_path_chown(struct path *path, uid_t uid, gid_t gid)
2981 static inline int security_path_chroot(struct path *path)
2985 #endif /* CONFIG_SECURITY_PATH */
2988 #ifdef CONFIG_SECURITY
2990 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
2991 void security_key_free(struct key *key);
2992 int security_key_permission(key_ref_t key_ref,
2993 const struct cred *cred, key_perm_t perm);
2994 int security_key_getsecurity(struct key *key, char **_buffer);
2995 int security_key_session_to_parent(const struct cred *cred,
2996 const struct cred *parent_cred,
3001 static inline int security_key_alloc(struct key *key,
3002 const struct cred *cred,
3003 unsigned long flags)
3008 static inline void security_key_free(struct key *key)
3012 static inline int security_key_permission(key_ref_t key_ref,
3013 const struct cred *cred,
3019 static inline int security_key_getsecurity(struct key *key, char **_buffer)
3025 static inline int security_key_session_to_parent(const struct cred *cred,
3026 const struct cred *parent_cred,
3033 #endif /* CONFIG_KEYS */
3036 #ifdef CONFIG_SECURITY
3037 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
3038 int security_audit_rule_known(struct audit_krule *krule);
3039 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
3040 struct audit_context *actx);
3041 void security_audit_rule_free(void *lsmrule);
3045 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
3051 static inline int security_audit_rule_known(struct audit_krule *krule)
3056 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
3057 void *lsmrule, struct audit_context *actx)
3062 static inline void security_audit_rule_free(void *lsmrule)
3065 #endif /* CONFIG_SECURITY */
3066 #endif /* CONFIG_AUDIT */
3068 #ifdef CONFIG_SECURITYFS
3070 extern struct dentry *securityfs_create_file(const char *name, mode_t mode,
3071 struct dentry *parent, void *data,
3072 const struct file_operations *fops);
3073 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
3074 extern void securityfs_remove(struct dentry *dentry);
3076 #else /* CONFIG_SECURITYFS */
3078 static inline struct dentry *securityfs_create_dir(const char *name,
3079 struct dentry *parent)
3081 return ERR_PTR(-ENODEV);
3084 static inline struct dentry *securityfs_create_file(const char *name,
3086 struct dentry *parent,
3088 const struct file_operations *fops)
3090 return ERR_PTR(-ENODEV);
3093 static inline void securityfs_remove(struct dentry *dentry)
3098 #ifdef CONFIG_SECURITY
3100 static inline char *alloc_secdata(void)
3102 return (char *)get_zeroed_page(GFP_KERNEL);
3105 static inline void free_secdata(void *secdata)
3107 free_page((unsigned long)secdata);
3112 static inline char *alloc_secdata(void)
3117 static inline void free_secdata(void *secdata)
3119 #endif /* CONFIG_SECURITY */
3121 #endif /* ! __LINUX_SECURITY_H */