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
25 #include <linux/key.h>
26 #include <linux/capability.h>
27 #include <linux/slab.h>
28 #include <linux/err.h>
29 #include <linux/string.h>
49 struct file_operations;
57 /* Maximum number of letters for an LSM name string */
58 #define SECURITY_NAME_MAX 10
60 /* If capable should audit the security request */
61 #define SECURITY_CAP_NOAUDIT 0
62 #define SECURITY_CAP_AUDIT 1
64 /* LSM Agnostic defines for sb_set_mnt_opts */
65 #define SECURITY_LSM_NATIVE_LABELS 1
69 struct user_namespace;
73 * These functions are in security/capability.c and are used
74 * as the default capabilities functions
76 extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
78 extern int cap_settime(const struct timespec *ts, const struct timezone *tz);
79 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
80 extern int cap_ptrace_traceme(struct task_struct *parent);
81 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
82 extern int cap_capset(struct cred *new, const struct cred *old,
83 const kernel_cap_t *effective,
84 const kernel_cap_t *inheritable,
85 const kernel_cap_t *permitted);
86 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
87 extern int cap_bprm_secureexec(struct linux_binprm *bprm);
88 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
89 const void *value, size_t size, int flags);
90 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
91 extern int cap_inode_need_killpriv(struct dentry *dentry);
92 extern int cap_inode_killpriv(struct dentry *dentry);
93 extern int cap_mmap_addr(unsigned long addr);
94 extern int cap_mmap_file(struct file *file, unsigned long reqprot,
95 unsigned long prot, unsigned long flags);
96 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
97 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
98 unsigned long arg4, unsigned long arg5);
99 extern int cap_task_setscheduler(struct task_struct *p);
100 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
101 extern int cap_task_setnice(struct task_struct *p, int nice);
102 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
111 struct xfrm_selector;
114 struct xfrm_user_sec_ctx;
117 extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
119 void reset_security_ops(void);
122 extern unsigned long mmap_min_addr;
123 extern unsigned long dac_mmap_min_addr;
125 #define mmap_min_addr 0UL
126 #define dac_mmap_min_addr 0UL
130 * Values used in the task_security_ops calls
132 /* setuid or setgid, id0 == uid or gid */
133 #define LSM_SETID_ID 1
135 /* setreuid or setregid, id0 == real, id1 == eff */
136 #define LSM_SETID_RE 2
138 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
139 #define LSM_SETID_RES 4
141 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
142 #define LSM_SETID_FS 8
144 /* forward declares to avoid warnings */
148 /* bprm->unsafe reasons */
149 #define LSM_UNSAFE_SHARE 1
150 #define LSM_UNSAFE_PTRACE 2
151 #define LSM_UNSAFE_PTRACE_CAP 4
152 #define LSM_UNSAFE_NO_NEW_PRIVS 8
155 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
156 void __user *buffer, size_t *lenp, loff_t *ppos);
159 /* security_inode_init_security callback function to write xattrs */
160 typedef int (*initxattrs) (struct inode *inode,
161 const struct xattr *xattr_array, void *fs_data);
163 #ifdef CONFIG_SECURITY
165 struct security_mnt_opts {
171 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
173 opts->mnt_opts = NULL;
174 opts->mnt_opts_flags = NULL;
175 opts->num_mnt_opts = 0;
178 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
182 for (i = 0; i < opts->num_mnt_opts; i++)
183 kfree(opts->mnt_opts[i]);
184 kfree(opts->mnt_opts);
185 opts->mnt_opts = NULL;
186 kfree(opts->mnt_opts_flags);
187 opts->mnt_opts_flags = NULL;
188 opts->num_mnt_opts = 0;
192 * struct security_operations - main security structure
194 * Security module identifier.
197 * A string that acts as a unique identifier for the LSM with max number
198 * of characters = SECURITY_NAME_MAX.
200 * Security hooks for program execution operations.
203 * Save security information in the bprm->security field, typically based
204 * on information about the bprm->file, for later use by the apply_creds
205 * hook. This hook may also optionally check permissions (e.g. for
206 * transitions between security domains).
207 * This hook may be called multiple times during a single execve, e.g. for
208 * interpreters. The hook can tell whether it has already been called by
209 * checking to see if @bprm->security is non-NULL. If so, then the hook
210 * may decide either to retain the security information saved earlier or
212 * @bprm contains the linux_binprm structure.
213 * Return 0 if the hook is successful and permission is granted.
214 * @bprm_check_security:
215 * This hook mediates the point when a search for a binary handler will
216 * begin. It allows a check the @bprm->security value which is set in the
217 * preceding set_creds call. The primary difference from set_creds is
218 * that the argv list and envp list are reliably available in @bprm. This
219 * hook may be called multiple times during a single execve; and in each
220 * pass set_creds is called first.
221 * @bprm contains the linux_binprm structure.
222 * Return 0 if the hook is successful and permission is granted.
223 * @bprm_committing_creds:
224 * Prepare to install the new security attributes of a process being
225 * transformed by an execve operation, based on the old credentials
226 * pointed to by @current->cred and the information set in @bprm->cred by
227 * the bprm_set_creds hook. @bprm points to the linux_binprm structure.
228 * This hook is a good place to perform state changes on the process such
229 * as closing open file descriptors to which access will no longer be
230 * granted when the attributes are changed. This is called immediately
231 * before commit_creds().
232 * @bprm_committed_creds:
233 * Tidy up after the installation of the new security attributes of a
234 * process being transformed by an execve operation. The new credentials
235 * have, by this point, been set to @current->cred. @bprm points to the
236 * linux_binprm structure. This hook is a good place to perform state
237 * changes on the process such as clearing out non-inheritable signal
238 * state. This is called immediately after commit_creds().
240 * Return a boolean value (0 or 1) indicating whether a "secure exec"
241 * is required. The flag is passed in the auxiliary table
242 * on the initial stack to the ELF interpreter to indicate whether libc
243 * should enable secure mode.
244 * @bprm contains the linux_binprm structure.
246 * Security hooks for filesystem operations.
248 * @sb_alloc_security:
249 * Allocate and attach a security structure to the sb->s_security field.
250 * The s_security field is initialized to NULL when the structure is
252 * @sb contains the super_block structure to be modified.
253 * Return 0 if operation was successful.
255 * Deallocate and clear the sb->s_security field.
256 * @sb contains the super_block structure to be modified.
258 * Check permission before obtaining filesystem statistics for the @mnt
260 * @dentry is a handle on the superblock for the filesystem.
261 * Return 0 if permission is granted.
263 * Check permission before an object specified by @dev_name is mounted on
264 * the mount point named by @nd. For an ordinary mount, @dev_name
265 * identifies a device if the file system type requires a device. For a
266 * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a
267 * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
268 * pathname of the object being mounted.
269 * @dev_name contains the name for object being mounted.
270 * @path contains the path for mount point object.
271 * @type contains the filesystem type.
272 * @flags contains the mount flags.
273 * @data contains the filesystem-specific data.
274 * Return 0 if permission is granted.
276 * Allow mount option data to be copied prior to parsing by the filesystem,
277 * so that the security module can extract security-specific mount
278 * options cleanly (a filesystem may modify the data e.g. with strsep()).
279 * This also allows the original mount data to be stripped of security-
280 * specific options to avoid having to make filesystems aware of them.
281 * @type the type of filesystem being mounted.
282 * @orig the original mount data copied from userspace.
283 * @copy copied data which will be passed to the security module.
284 * Returns 0 if the copy was successful.
286 * Extracts security system specific mount options and verifies no changes
287 * are being made to those options.
288 * @sb superblock being remounted
289 * @data contains the filesystem-specific data.
290 * Return 0 if permission is granted.
292 * Check permission before the @mnt file system is unmounted.
293 * @mnt contains the mounted file system.
294 * @flags contains the unmount flags, e.g. MNT_FORCE.
295 * Return 0 if permission is granted.
297 * Check permission before pivoting the root filesystem.
298 * @old_path contains the path for the new location of the current root (put_old).
299 * @new_path contains the path for the new root (new_root).
300 * Return 0 if permission is granted.
302 * Set the security relevant mount options used for a superblock
303 * @sb the superblock to set security mount options for
304 * @opts binary data structure containing all lsm mount data
305 * @sb_clone_mnt_opts:
306 * Copy all security options from a given superblock to another
307 * @oldsb old superblock which contain information to clone
308 * @newsb new superblock which needs filled in
309 * @sb_parse_opts_str:
310 * Parse a string of security data filling in the opts structure
311 * @options string containing all mount options known by the LSM
312 * @opts binary data structure usable by the LSM
313 * @dentry_init_security:
314 * Compute a context for a dentry as the inode is not yet available
315 * since NFSv4 has no label backed by an EA anyway.
316 * @dentry dentry to use in calculating the context.
317 * @mode mode used to determine resource type.
318 * @name name of the last path component used to create file
319 * @ctx pointer to place the pointer to the resulting context in.
320 * @ctxlen point to place the length of the resulting context.
323 * Security hooks for inode operations.
325 * @inode_alloc_security:
326 * Allocate and attach a security structure to @inode->i_security. The
327 * i_security field is initialized to NULL when the inode structure is
329 * @inode contains the inode structure.
330 * Return 0 if operation was successful.
331 * @inode_free_security:
332 * @inode contains the inode structure.
333 * Deallocate the inode security structure and set @inode->i_security to
335 * @inode_init_security:
336 * Obtain the security attribute name suffix and value to set on a newly
337 * created inode and set up the incore security field for the new inode.
338 * This hook is called by the fs code as part of the inode creation
339 * transaction and provides for atomic labeling of the inode, unlike
340 * the post_create/mkdir/... hooks called by the VFS. The hook function
341 * is expected to allocate the name and value via kmalloc, with the caller
342 * being responsible for calling kfree after using them.
343 * If the security module does not use security attributes or does
344 * not wish to put a security attribute on this particular inode,
345 * then it should return -EOPNOTSUPP to skip this processing.
346 * @inode contains the inode structure of the newly created inode.
347 * @dir contains the inode structure of the parent directory.
348 * @qstr contains the last path component of the new object
349 * @name will be set to the allocated name suffix (e.g. selinux).
350 * @value will be set to the allocated attribute value.
351 * @len will be set to the length of the value.
352 * Returns 0 if @name and @value have been successfully set,
353 * -EOPNOTSUPP if no security attribute is needed, or
354 * -ENOMEM on memory allocation failure.
356 * Check permission to create a regular file.
357 * @dir contains inode structure of the parent of the new file.
358 * @dentry contains the dentry structure for the file to be created.
359 * @mode contains the file mode of the file to be created.
360 * Return 0 if permission is granted.
362 * Check permission before creating a new hard link to a file.
363 * @old_dentry contains the dentry structure for an existing link to the file.
364 * @dir contains the inode structure of the parent directory of the new link.
365 * @new_dentry contains the dentry structure for the new link.
366 * Return 0 if permission is granted.
368 * Check permission before creating a new hard link to a file.
369 * @old_dentry contains the dentry structure for an existing link
371 * @new_dir contains the path structure of the parent directory of
373 * @new_dentry contains the dentry structure for the new link.
374 * Return 0 if permission is granted.
376 * Check the permission to remove a hard link to a file.
377 * @dir contains the inode structure of parent directory of the file.
378 * @dentry contains the dentry structure for file to be unlinked.
379 * Return 0 if permission is granted.
381 * Check the permission to remove a hard link to a file.
382 * @dir contains the path structure of parent directory of the file.
383 * @dentry contains the dentry structure for file to be unlinked.
384 * Return 0 if permission is granted.
386 * Check the permission to create a symbolic link to a file.
387 * @dir contains the inode structure of parent directory of the symbolic link.
388 * @dentry contains the dentry structure of the symbolic link.
389 * @old_name contains the pathname of file.
390 * Return 0 if permission is granted.
392 * Check the permission to create a symbolic link to a file.
393 * @dir contains the path structure of parent directory of
395 * @dentry contains the dentry structure of the symbolic link.
396 * @old_name contains the pathname of file.
397 * Return 0 if permission is granted.
399 * Check permissions to create a new directory in the existing directory
400 * associated with inode structure @dir.
401 * @dir contains the inode structure of parent of the directory to be created.
402 * @dentry contains the dentry structure of new directory.
403 * @mode contains the mode of new directory.
404 * Return 0 if permission is granted.
406 * Check permissions to create a new directory in the existing directory
407 * associated with path structure @path.
408 * @dir contains the path structure of parent of the directory
410 * @dentry contains the dentry structure of new directory.
411 * @mode contains the mode of new directory.
412 * Return 0 if permission is granted.
414 * Check the permission to remove a directory.
415 * @dir contains the inode structure of parent of the directory to be removed.
416 * @dentry contains the dentry structure of directory to be removed.
417 * Return 0 if permission is granted.
419 * Check the permission to remove a directory.
420 * @dir contains the path structure of parent of the directory to be
422 * @dentry contains the dentry structure of directory to be removed.
423 * Return 0 if permission is granted.
425 * Check permissions when creating a special file (or a socket or a fifo
426 * file created via the mknod system call). Note that if mknod operation
427 * is being done for a regular file, then the create hook will be called
429 * @dir contains the inode structure of parent of the new file.
430 * @dentry contains the dentry structure of the new file.
431 * @mode contains the mode of the new file.
432 * @dev contains the device number.
433 * Return 0 if permission is granted.
435 * Check permissions when creating a file. Note that this hook is called
436 * even if mknod operation is being done for a regular file.
437 * @dir contains the path structure of parent of the new file.
438 * @dentry contains the dentry structure of the new file.
439 * @mode contains the mode of the new file.
440 * @dev contains the undecoded device number. Use new_decode_dev() to get
441 * the decoded device number.
442 * Return 0 if permission is granted.
444 * Check for permission to rename a file or directory.
445 * @old_dir contains the inode structure for parent of the old link.
446 * @old_dentry contains the dentry structure of the old link.
447 * @new_dir contains the inode structure for parent of the new link.
448 * @new_dentry contains the dentry structure of the new link.
449 * Return 0 if permission is granted.
451 * Check for permission to rename a file or directory.
452 * @old_dir contains the path structure for parent of the old link.
453 * @old_dentry contains the dentry structure of the old link.
454 * @new_dir contains the path structure for parent of the new link.
455 * @new_dentry contains the dentry structure of the new link.
456 * Return 0 if permission is granted.
458 * Check for permission to change DAC's permission of a file or directory.
459 * @dentry contains the dentry structure.
460 * @mnt contains the vfsmnt structure.
461 * @mode contains DAC's mode.
462 * Return 0 if permission is granted.
464 * Check for permission to change owner/group of a file or directory.
465 * @path contains the path structure.
466 * @uid contains new owner's ID.
467 * @gid contains new group's ID.
468 * Return 0 if permission is granted.
470 * Check for permission to change root directory.
471 * @path contains the path structure.
472 * Return 0 if permission is granted.
474 * Check the permission to read the symbolic link.
475 * @dentry contains the dentry structure for the file link.
476 * Return 0 if permission is granted.
477 * @inode_follow_link:
478 * Check permission to follow a symbolic link when looking up a pathname.
479 * @dentry contains the dentry structure for the link.
480 * @nd contains the nameidata structure for the parent directory.
481 * Return 0 if permission is granted.
483 * Check permission before accessing an inode. This hook is called by the
484 * existing Linux permission function, so a security module can use it to
485 * provide additional checking for existing Linux permission checks.
486 * Notice that this hook is called when a file is opened (as well as many
487 * other operations), whereas the file_security_ops permission hook is
488 * called when the actual read/write operations are performed.
489 * @inode contains the inode structure to check.
490 * @mask contains the permission mask.
491 * Return 0 if permission is granted.
493 * Check permission before setting file attributes. Note that the kernel
494 * call to notify_change is performed from several locations, whenever
495 * file attributes change (such as when a file is truncated, chown/chmod
496 * operations, transferring disk quotas, etc).
497 * @dentry contains the dentry structure for the file.
498 * @attr is the iattr structure containing the new file attributes.
499 * Return 0 if permission is granted.
501 * Check permission before truncating a file.
502 * @path contains the path structure for the file.
503 * Return 0 if permission is granted.
505 * Check permission before obtaining file attributes.
506 * @mnt is the vfsmount where the dentry was looked up
507 * @dentry contains the dentry structure for the file.
508 * Return 0 if permission is granted.
510 * Check permission before setting the extended attributes
511 * @value identified by @name for @dentry.
512 * Return 0 if permission is granted.
513 * @inode_post_setxattr:
514 * Update inode security field after successful setxattr operation.
515 * @value identified by @name for @dentry.
517 * Check permission before obtaining the extended attributes
518 * identified by @name for @dentry.
519 * Return 0 if permission is granted.
521 * Check permission before obtaining the list of extended attribute
523 * Return 0 if permission is granted.
524 * @inode_removexattr:
525 * Check permission before removing the extended attribute
526 * identified by @name for @dentry.
527 * Return 0 if permission is granted.
528 * @inode_getsecurity:
529 * Retrieve a copy of the extended attribute representation of the
530 * security label associated with @name for @inode via @buffer. Note that
531 * @name is the remainder of the attribute name after the security prefix
532 * has been removed. @alloc is used to specify of the call should return a
533 * value via the buffer or just the value length Return size of buffer on
535 * @inode_setsecurity:
536 * Set the security label associated with @name for @inode from the
537 * extended attribute value @value. @size indicates the size of the
538 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
539 * Note that @name is the remainder of the attribute name after the
540 * security. prefix has been removed.
541 * Return 0 on success.
542 * @inode_listsecurity:
543 * Copy the extended attribute names for the security labels
544 * associated with @inode into @buffer. The maximum size of @buffer
545 * is specified by @buffer_size. @buffer may be NULL to request
546 * the size of the buffer required.
547 * Returns number of bytes used/required on success.
548 * @inode_need_killpriv:
549 * Called when an inode has been changed.
550 * @dentry is the dentry being changed.
551 * Return <0 on error to abort the inode change operation.
552 * Return 0 if inode_killpriv does not need to be called.
553 * Return >0 if inode_killpriv does need to be called.
555 * The setuid bit is being removed. Remove similar security labels.
556 * Called with the dentry->d_inode->i_mutex held.
557 * @dentry is the dentry being changed.
558 * Return 0 on success. If error is returned, then the operation
559 * causing setuid bit removal is failed.
561 * Get the secid associated with the node.
562 * @inode contains a pointer to the inode.
563 * @secid contains a pointer to the location where result will be saved.
564 * In case of failure, @secid will be set to zero.
566 * Security hooks for file operations
569 * Check file permissions before accessing an open file. This hook is
570 * called by various operations that read or write files. A security
571 * module can use this hook to perform additional checking on these
572 * operations, e.g. to revalidate permissions on use to support privilege
573 * bracketing or policy changes. Notice that this hook is used when the
574 * actual read/write operations are performed, whereas the
575 * inode_security_ops hook is called when a file is opened (as well as
576 * many other operations).
577 * Caveat: Although this hook can be used to revalidate permissions for
578 * various system call operations that read or write files, it does not
579 * address the revalidation of permissions for memory-mapped files.
580 * Security modules must handle this separately if they need such
582 * @file contains the file structure being accessed.
583 * @mask contains the requested permissions.
584 * Return 0 if permission is granted.
585 * @file_alloc_security:
586 * Allocate and attach a security structure to the file->f_security field.
587 * The security field is initialized to NULL when the structure is first
589 * @file contains the file structure to secure.
590 * Return 0 if the hook is successful and permission is granted.
591 * @file_free_security:
592 * Deallocate and free any security structures stored in file->f_security.
593 * @file contains the file structure being modified.
595 * @file contains the file structure.
596 * @cmd contains the operation to perform.
597 * @arg contains the operational arguments.
598 * Check permission for an ioctl operation on @file. Note that @arg
599 * sometimes represents a user space pointer; in other cases, it may be a
600 * simple integer value. When @arg represents a user space pointer, it
601 * should never be used by the security module.
602 * Return 0 if permission is granted.
604 * Check permissions for a mmap operation at @addr.
605 * @addr contains virtual address that will be used for the operation.
606 * Return 0 if permission is granted.
608 * Check permissions for a mmap operation. The @file may be NULL, e.g.
609 * if mapping anonymous memory.
610 * @file contains the file structure for file to map (may be NULL).
611 * @reqprot contains the protection requested by the application.
612 * @prot contains the protection that will be applied by the kernel.
613 * @flags contains the operational flags.
614 * Return 0 if permission is granted.
616 * Check permissions before changing memory access permissions.
617 * @vma contains the memory region to modify.
618 * @reqprot contains the protection requested by the application.
619 * @prot contains the protection that will be applied by the kernel.
620 * Return 0 if permission is granted.
622 * Check permission before performing file locking operations.
623 * Note: this hook mediates both flock and fcntl style locks.
624 * @file contains the file structure.
625 * @cmd contains the posix-translated lock operation to perform
626 * (e.g. F_RDLCK, F_WRLCK).
627 * Return 0 if permission is granted.
629 * Check permission before allowing the file operation specified by @cmd
630 * from being performed on the file @file. Note that @arg sometimes
631 * represents a user space pointer; in other cases, it may be a simple
632 * integer value. When @arg represents a user space pointer, it should
633 * never be used by the security module.
634 * @file contains the file structure.
635 * @cmd contains the operation to be performed.
636 * @arg contains the operational arguments.
637 * Return 0 if permission is granted.
639 * Save owner security information (typically from current->security) in
640 * file->f_security for later use by the send_sigiotask hook.
641 * @file contains the file structure to update.
642 * Return 0 on success.
643 * @file_send_sigiotask:
644 * Check permission for the file owner @fown to send SIGIO or SIGURG to the
645 * process @tsk. Note that this hook is sometimes called from interrupt.
646 * Note that the fown_struct, @fown, is never outside the context of a
647 * struct file, so the file structure (and associated security information)
648 * can always be obtained:
649 * container_of(fown, struct file, f_owner)
650 * @tsk contains the structure of task receiving signal.
651 * @fown contains the file owner information.
652 * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
653 * Return 0 if permission is granted.
655 * This hook allows security modules to control the ability of a process
656 * to receive an open file descriptor via socket IPC.
657 * @file contains the file structure being received.
658 * Return 0 if permission is granted.
660 * Save open-time permission checking state for later use upon
661 * file_permission, and recheck access if anything has changed
662 * since inode_permission.
664 * Security hooks for task operations.
667 * Check permission before creating a child process. See the clone(2)
668 * manual page for definitions of the @clone_flags.
669 * @clone_flags contains the flags indicating what should be shared.
670 * Return 0 if permission is granted.
672 * @task task being freed
673 * Handle release of task-related resources. (Note that this can be called
674 * from interrupt context.)
676 * @cred points to the credentials.
677 * @gfp indicates the atomicity of any memory allocations.
678 * Only allocate sufficient memory and attach to @cred such that
679 * cred_transfer() will not get ENOMEM.
681 * @cred points to the credentials.
682 * Deallocate and clear the cred->security field in a set of credentials.
684 * @new points to the new credentials.
685 * @old points to the original credentials.
686 * @gfp indicates the atomicity of any memory allocations.
687 * Prepare a new set of credentials by copying the data from the old set.
689 * @new points to the new credentials.
690 * @old points to the original credentials.
691 * Transfer data from original creds to new creds
693 * Set the credentials for a kernel service to act as (subjective context).
694 * @new points to the credentials to be modified.
695 * @secid specifies the security ID to be set
696 * The current task must be the one that nominated @secid.
697 * Return 0 if successful.
698 * @kernel_create_files_as:
699 * Set the file creation context in a set of credentials to be the same as
700 * the objective context of the specified inode.
701 * @new points to the credentials to be modified.
702 * @inode points to the inode to use as a reference.
703 * The current task must be the one that nominated @inode.
704 * Return 0 if successful.
705 * @kernel_module_request:
706 * Ability to trigger the kernel to automatically upcall to userspace for
707 * userspace to load a kernel module with the given name.
708 * @kmod_name name of the module requested by the kernel
709 * Return 0 if successful.
710 * @kernel_module_from_file:
711 * Load a kernel module from userspace.
712 * @file contains the file structure pointing to the file containing
713 * the kernel module to load. If the module is being loaded from a blob,
714 * this argument will be NULL.
715 * Return 0 if permission is granted.
717 * Update the module's state after setting one or more of the user
718 * identity attributes of the current process. The @flags parameter
719 * indicates which of the set*uid system calls invoked this hook. If
720 * @new is the set of credentials that will be installed. Modifications
721 * should be made to this rather than to @current->cred.
722 * @old is the set of credentials that are being replaces
723 * @flags contains one of the LSM_SETID_* values.
724 * Return 0 on success.
726 * Check permission before setting the process group identifier of the
727 * process @p to @pgid.
728 * @p contains the task_struct for process being modified.
729 * @pgid contains the new pgid.
730 * Return 0 if permission is granted.
732 * Check permission before getting the process group identifier of the
734 * @p contains the task_struct for the process.
735 * Return 0 if permission is granted.
737 * Check permission before getting the session identifier of the process
739 * @p contains the task_struct for the process.
740 * Return 0 if permission is granted.
742 * Retrieve the security identifier of the process @p.
743 * @p contains the task_struct for the process and place is into @secid.
744 * In case of failure, @secid will be set to zero.
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 * Security hooks for Unix domain networking.
831 * @unix_stream_connect:
832 * Check permissions before establishing a Unix domain stream connection
833 * between @sock and @other.
834 * @sock contains the sock structure.
835 * @other contains the peer sock structure.
836 * @newsk contains the new sock structure.
837 * Return 0 if permission is granted.
839 * Check permissions before connecting or sending datagrams from @sock to
841 * @sock contains the socket structure.
842 * @other contains the peer socket structure.
843 * Return 0 if permission is granted.
845 * The @unix_stream_connect and @unix_may_send hooks were necessary because
846 * Linux provides an alternative to the conventional file name space for Unix
847 * domain sockets. Whereas binding and connecting to sockets in the file name
848 * space is mediated by the typical file permissions (and caught by the mknod
849 * and permission hooks in inode_security_ops), binding and connecting to
850 * sockets in the abstract name space is completely unmediated. Sufficient
851 * control of Unix domain sockets in the abstract name space isn't possible
852 * using only the socket layer hooks, since we need to know the actual target
853 * socket, which is not looked up until we are inside the af_unix code.
855 * Security hooks for socket operations.
858 * Check permissions prior to creating a new socket.
859 * @family contains the requested protocol family.
860 * @type contains the requested communications type.
861 * @protocol contains the requested protocol.
862 * @kern set to 1 if a kernel socket.
863 * Return 0 if permission is granted.
864 * @socket_post_create:
865 * This hook allows a module to update or allocate a per-socket security
866 * structure. Note that the security field was not added directly to the
867 * socket structure, but rather, the socket security information is stored
868 * in the associated inode. Typically, the inode alloc_security hook will
869 * allocate and and attach security information to
870 * sock->inode->i_security. This hook may be used to update the
871 * sock->inode->i_security field with additional information that wasn't
872 * available when the inode was allocated.
873 * @sock contains the newly created socket structure.
874 * @family contains the requested protocol family.
875 * @type contains the requested communications type.
876 * @protocol contains the requested protocol.
877 * @kern set to 1 if a kernel socket.
879 * Check permission before socket protocol layer bind operation is
880 * performed and the socket @sock is bound to the address specified in the
881 * @address parameter.
882 * @sock contains the socket structure.
883 * @address contains the address to bind to.
884 * @addrlen contains the length of address.
885 * Return 0 if permission is granted.
887 * Check permission before socket protocol layer connect operation
888 * attempts to connect socket @sock to a remote address, @address.
889 * @sock contains the socket structure.
890 * @address contains the address of remote endpoint.
891 * @addrlen contains the length of address.
892 * Return 0 if permission is granted.
894 * Check permission before socket protocol layer listen operation.
895 * @sock contains the socket structure.
896 * @backlog contains the maximum length for the pending connection queue.
897 * Return 0 if permission is granted.
899 * Check permission before accepting a new connection. Note that the new
900 * socket, @newsock, has been created and some information copied to it,
901 * but the accept operation has not actually been performed.
902 * @sock contains the listening socket structure.
903 * @newsock contains the newly created server socket for connection.
904 * Return 0 if permission is granted.
906 * Check permission before transmitting a message to another socket.
907 * @sock contains the socket structure.
908 * @msg contains the message to be transmitted.
909 * @size contains the size of message.
910 * Return 0 if permission is granted.
912 * Check permission before receiving a message from a socket.
913 * @sock contains the socket structure.
914 * @msg contains the message structure.
915 * @size contains the size of message structure.
916 * @flags contains the operational flags.
917 * Return 0 if permission is granted.
918 * @socket_getsockname:
919 * Check permission before the local address (name) of the socket object
920 * @sock is retrieved.
921 * @sock contains the socket structure.
922 * Return 0 if permission is granted.
923 * @socket_getpeername:
924 * Check permission before the remote address (name) of a socket object
925 * @sock is retrieved.
926 * @sock contains the socket structure.
927 * Return 0 if permission is granted.
928 * @socket_getsockopt:
929 * Check permissions before retrieving the options associated with socket
931 * @sock contains the socket structure.
932 * @level contains the protocol level to retrieve option from.
933 * @optname contains the name of option to retrieve.
934 * Return 0 if permission is granted.
935 * @socket_setsockopt:
936 * Check permissions before setting the options associated with socket
938 * @sock contains the socket structure.
939 * @level contains the protocol level to set options for.
940 * @optname contains the name of the option to set.
941 * Return 0 if permission is granted.
943 * Checks permission before all or part of a connection on the socket
944 * @sock is shut down.
945 * @sock contains the socket structure.
946 * @how contains the flag indicating how future sends and receives are handled.
947 * Return 0 if permission is granted.
948 * @socket_sock_rcv_skb:
949 * Check permissions on incoming network packets. This hook is distinct
950 * from Netfilter's IP input hooks since it is the first time that the
951 * incoming sk_buff @skb has been associated with a particular socket, @sk.
952 * Must not sleep inside this hook because some callers hold spinlocks.
953 * @sk contains the sock (not socket) associated with the incoming sk_buff.
954 * @skb contains the incoming network data.
955 * @socket_getpeersec_stream:
956 * This hook allows the security module to provide peer socket security
957 * state for unix or connected tcp sockets to userspace via getsockopt
958 * SO_GETPEERSEC. For tcp sockets this can be meaningful if the
959 * socket is associated with an ipsec SA.
960 * @sock is the local socket.
961 * @optval userspace memory where the security state is to be copied.
962 * @optlen userspace int where the module should copy the actual length
963 * of the security state.
964 * @len as input is the maximum length to copy to userspace provided
966 * Return 0 if all is well, otherwise, typical getsockopt return
968 * @socket_getpeersec_dgram:
969 * This hook allows the security module to provide peer socket security
970 * state for udp sockets on a per-packet basis to userspace via
971 * getsockopt SO_GETPEERSEC. The application must first have indicated
972 * the IP_PASSSEC option via getsockopt. It can then retrieve the
973 * security state returned by this hook for a packet via the SCM_SECURITY
974 * ancillary message type.
975 * @skb is the skbuff for the packet being queried
976 * @secdata is a pointer to a buffer in which to copy the security data
977 * @seclen is the maximum length for @secdata
978 * Return 0 on success, error on failure.
979 * @sk_alloc_security:
980 * Allocate and attach a security structure to the sk->sk_security field,
981 * which is used to copy security attributes between local stream sockets.
983 * Deallocate security structure.
984 * @sk_clone_security:
985 * Clone/copy security structure.
987 * Retrieve the LSM-specific secid for the sock to enable caching of network
990 * Sets the socket's isec sid to the sock's sid.
991 * @inet_conn_request:
992 * Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
994 * Sets the new child socket's sid to the openreq sid.
995 * @inet_conn_established:
996 * Sets the connection's peersid to the secmark on skb.
997 * @secmark_relabel_packet:
998 * check if the process should be allowed to relabel packets to the given secid
999 * @security_secmark_refcount_inc
1000 * tells the LSM to increment the number of secmark labeling rules loaded
1001 * @security_secmark_refcount_dec
1002 * tells the LSM to decrement the number of secmark labeling rules loaded
1003 * @req_classify_flow:
1004 * Sets the flow's sid to the openreq sid.
1005 * @tun_dev_alloc_security:
1006 * This hook allows a module to allocate a security structure for a TUN
1008 * @security pointer to a security structure pointer.
1009 * Returns a zero on success, negative values on failure.
1010 * @tun_dev_free_security:
1011 * This hook allows a module to free the security structure for a TUN
1013 * @security pointer to the TUN device's security structure
1015 * Check permissions prior to creating a new TUN device.
1016 * @tun_dev_attach_queue:
1017 * Check permissions prior to attaching to a TUN device queue.
1018 * @security pointer to the TUN device's security structure.
1020 * This hook can be used by the module to update any security state
1021 * associated with the TUN device's sock structure.
1022 * @sk contains the existing sock structure.
1023 * @security pointer to the TUN device's security structure.
1025 * This hook can be used by the module to update any security state
1026 * associated with the TUN device's security structure.
1027 * @security pointer to the TUN devices's security structure.
1029 * This hook sets the packet's owning sock.
1030 * @skb is the packet.
1031 * @sk the sock which owns the packet.
1033 * Security hooks for XFRM operations.
1035 * @xfrm_policy_alloc_security:
1036 * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
1037 * Database used by the XFRM system.
1038 * @sec_ctx contains the security context information being provided by
1039 * the user-level policy update program (e.g., setkey).
1040 * Allocate a security structure to the xp->security field; the security
1041 * field is initialized to NULL when the xfrm_policy is allocated.
1042 * Return 0 if operation was successful (memory to allocate, legal context)
1043 * @xfrm_policy_clone_security:
1044 * @old_ctx contains an existing xfrm_sec_ctx.
1045 * @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
1046 * Allocate a security structure in new_ctxp that contains the
1047 * information from the old_ctx structure.
1048 * Return 0 if operation was successful (memory to allocate).
1049 * @xfrm_policy_free_security:
1050 * @ctx contains the xfrm_sec_ctx
1051 * Deallocate xp->security.
1052 * @xfrm_policy_delete_security:
1053 * @ctx contains the xfrm_sec_ctx.
1054 * Authorize deletion of xp->security.
1055 * @xfrm_state_alloc:
1056 * @x contains the xfrm_state being added to the Security Association
1057 * Database by the XFRM system.
1058 * @sec_ctx contains the security context information being provided by
1059 * the user-level SA generation program (e.g., setkey or racoon).
1060 * Allocate a security structure to the x->security field; the security
1061 * field is initialized to NULL when the xfrm_state is allocated. Set the
1062 * context to correspond to sec_ctx. Return 0 if operation was successful
1063 * (memory to allocate, legal context).
1064 * @xfrm_state_alloc_acquire:
1065 * @x contains the xfrm_state being added to the Security Association
1066 * Database by the XFRM system.
1067 * @polsec contains the policy's security context.
1068 * @secid contains the secid from which to take the mls portion of the
1070 * Allocate a security structure to the x->security field; the security
1071 * field is initialized to NULL when the xfrm_state is allocated. Set the
1072 * context to correspond to secid. Return 0 if operation was successful
1073 * (memory to allocate, legal context).
1074 * @xfrm_state_free_security:
1075 * @x contains the xfrm_state.
1076 * Deallocate x->security.
1077 * @xfrm_state_delete_security:
1078 * @x contains the xfrm_state.
1079 * Authorize deletion of x->security.
1080 * @xfrm_policy_lookup:
1081 * @ctx contains the xfrm_sec_ctx for which the access control is being
1083 * @fl_secid contains the flow security label that is used to authorize
1084 * access to the policy xp.
1085 * @dir contains the direction of the flow (input or output).
1086 * Check permission when a flow selects a xfrm_policy for processing
1087 * XFRMs on a packet. The hook is called when selecting either a
1088 * per-socket policy or a generic xfrm policy.
1089 * Return 0 if permission is granted, -ESRCH otherwise, or -errno
1091 * @xfrm_state_pol_flow_match:
1092 * @x contains the state to match.
1093 * @xp contains the policy to check for a match.
1094 * @fl contains the flow to check for a match.
1095 * Return 1 if there is a match.
1096 * @xfrm_decode_session:
1097 * @skb points to skb to decode.
1098 * @secid points to the flow key secid to set.
1099 * @ckall says if all xfrms used should be checked for same secid.
1100 * Return 0 if ckall is zero or all xfrms used have the same secid.
1102 * Security hooks affecting all Key Management operations
1105 * Permit allocation of a key and assign security data. Note that key does
1106 * not have a serial number assigned at this point.
1107 * @key points to the key.
1108 * @flags is the allocation flags
1109 * Return 0 if permission is granted, -ve error otherwise.
1111 * Notification of destruction; free security data.
1112 * @key points to the key.
1115 * See whether a specific operational right is granted to a process on a
1117 * @key_ref refers to the key (key pointer + possession attribute bit).
1118 * @cred points to the credentials to provide the context against which to
1119 * evaluate the security data on the key.
1120 * @perm describes the combination of permissions required of this key.
1121 * Return 0 if permission is granted, -ve error otherwise.
1123 * Get a textual representation of the security context attached to a key
1124 * for the purposes of honouring KEYCTL_GETSECURITY. This function
1125 * allocates the storage for the NUL-terminated string and the caller
1127 * @key points to the key to be queried.
1128 * @_buffer points to a pointer that should be set to point to the
1129 * resulting string (if no label or an error occurs).
1130 * Return the length of the string (including terminating NUL) or -ve if
1132 * May also return 0 (and a NULL buffer pointer) if there is no label.
1134 * Security hooks affecting all System V IPC operations.
1137 * Check permissions for access to IPC
1138 * @ipcp contains the kernel IPC permission structure
1139 * @flag contains the desired (requested) permission set
1140 * Return 0 if permission is granted.
1142 * Get the secid associated with the ipc object.
1143 * @ipcp contains the kernel IPC permission structure.
1144 * @secid contains a pointer to the location where result will be saved.
1145 * In case of failure, @secid will be set to zero.
1147 * Security hooks for individual messages held in System V IPC message queues
1148 * @msg_msg_alloc_security:
1149 * Allocate and attach a security structure to the msg->security field.
1150 * The security field is initialized to NULL when the structure is first
1152 * @msg contains the message structure to be modified.
1153 * Return 0 if operation was successful and permission is granted.
1154 * @msg_msg_free_security:
1155 * Deallocate the security structure for this message.
1156 * @msg contains the message structure to be modified.
1158 * Security hooks for System V IPC Message Queues
1160 * @msg_queue_alloc_security:
1161 * Allocate and attach a security structure to the
1162 * msq->q_perm.security field. The security field is initialized to
1163 * NULL when the structure is first created.
1164 * @msq contains the message queue structure to be modified.
1165 * Return 0 if operation was successful and permission is granted.
1166 * @msg_queue_free_security:
1167 * Deallocate security structure for this message queue.
1168 * @msq contains the message queue structure to be modified.
1169 * @msg_queue_associate:
1170 * Check permission when a message queue is requested through the
1171 * msgget system call. This hook is only called when returning the
1172 * message queue identifier for an existing message queue, not when a
1173 * new message queue is created.
1174 * @msq contains the message queue to act upon.
1175 * @msqflg contains the operation control flags.
1176 * Return 0 if permission is granted.
1177 * @msg_queue_msgctl:
1178 * Check permission when a message control operation specified by @cmd
1179 * is to be performed on the message queue @msq.
1180 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
1181 * @msq contains the message queue to act upon. May be NULL.
1182 * @cmd contains the operation to be performed.
1183 * Return 0 if permission is granted.
1184 * @msg_queue_msgsnd:
1185 * Check permission before a message, @msg, is enqueued on the message
1187 * @msq contains the message queue to send message to.
1188 * @msg contains the message to be enqueued.
1189 * @msqflg contains operational flags.
1190 * Return 0 if permission is granted.
1191 * @msg_queue_msgrcv:
1192 * Check permission before a message, @msg, is removed from the message
1193 * queue, @msq. The @target task structure contains a pointer to the
1194 * process that will be receiving the message (not equal to the current
1195 * process when inline receives are being performed).
1196 * @msq contains the message queue to retrieve message from.
1197 * @msg contains the message destination.
1198 * @target contains the task structure for recipient process.
1199 * @type contains the type of message requested.
1200 * @mode contains the operational flags.
1201 * Return 0 if permission is granted.
1203 * Security hooks for System V Shared Memory Segments
1205 * @shm_alloc_security:
1206 * Allocate and attach a security structure to the shp->shm_perm.security
1207 * field. The security field is initialized to NULL when the structure is
1209 * @shp contains the shared memory structure to be modified.
1210 * Return 0 if operation was successful and permission is granted.
1211 * @shm_free_security:
1212 * Deallocate the security struct for this memory segment.
1213 * @shp contains the shared memory structure to be modified.
1215 * Check permission when a shared memory region is requested through the
1216 * shmget system call. This hook is only called when returning the shared
1217 * memory region identifier for an existing region, not when a new shared
1218 * memory region is created.
1219 * @shp contains the shared memory structure to be modified.
1220 * @shmflg contains the operation control flags.
1221 * Return 0 if permission is granted.
1223 * Check permission when a shared memory control operation specified by
1224 * @cmd is to be performed on the shared memory region @shp.
1225 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1226 * @shp contains shared memory structure to be modified.
1227 * @cmd contains the operation to be performed.
1228 * Return 0 if permission is granted.
1230 * Check permissions prior to allowing the shmat system call to attach the
1231 * shared memory segment @shp to the data segment of the calling process.
1232 * The attaching address is specified by @shmaddr.
1233 * @shp contains the shared memory structure to be modified.
1234 * @shmaddr contains the address to attach memory region to.
1235 * @shmflg contains the operational flags.
1236 * Return 0 if permission is granted.
1238 * Security hooks for System V Semaphores
1240 * @sem_alloc_security:
1241 * Allocate and attach a security structure to the sma->sem_perm.security
1242 * field. The security field is initialized to NULL when the structure is
1244 * @sma contains the semaphore structure
1245 * Return 0 if operation was successful and permission is granted.
1246 * @sem_free_security:
1247 * deallocate security struct for this semaphore
1248 * @sma contains the semaphore structure.
1250 * Check permission when a semaphore is requested through the semget
1251 * system call. This hook is only called when returning the semaphore
1252 * identifier for an existing semaphore, not when a new one must be
1254 * @sma contains the semaphore structure.
1255 * @semflg contains the operation control flags.
1256 * Return 0 if permission is granted.
1258 * Check permission when a semaphore operation specified by @cmd is to be
1259 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
1260 * IPC_INFO or SEM_INFO.
1261 * @sma contains the semaphore structure. May be NULL.
1262 * @cmd contains the operation to be performed.
1263 * Return 0 if permission is granted.
1265 * Check permissions before performing operations on members of the
1266 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1268 * @sma contains the semaphore structure.
1269 * @sops contains the operations to perform.
1270 * @nsops contains the number of operations to perform.
1271 * @alter contains the flag indicating whether changes are to be made.
1272 * Return 0 if permission is granted.
1274 * @ptrace_access_check:
1275 * Check permission before allowing the current process to trace the
1277 * Security modules may also want to perform a process tracing check
1278 * during an execve in the set_security or apply_creds hooks of
1279 * tracing check during an execve in the bprm_set_creds hook of
1280 * binprm_security_ops if the process is being traced and its security
1281 * attributes would be changed by the execve.
1282 * @child contains the task_struct structure for the target process.
1283 * @mode contains the PTRACE_MODE flags indicating the form of access.
1284 * Return 0 if permission is granted.
1286 * Check that the @parent process has sufficient permission to trace the
1287 * current process before allowing the current process to present itself
1288 * to the @parent process for tracing.
1289 * @parent contains the task_struct structure for debugger process.
1290 * Return 0 if permission is granted.
1292 * Get the @effective, @inheritable, and @permitted capability sets for
1293 * the @target process. The hook may also perform permission checking to
1294 * determine if the current process is allowed to see the capability sets
1295 * of the @target process.
1296 * @target contains the task_struct structure for target process.
1297 * @effective contains the effective capability set.
1298 * @inheritable contains the inheritable capability set.
1299 * @permitted contains the permitted capability set.
1300 * Return 0 if the capability sets were successfully obtained.
1302 * Set the @effective, @inheritable, and @permitted capability sets for
1303 * the current process.
1304 * @new contains the new credentials structure for target process.
1305 * @old contains the current credentials structure for target process.
1306 * @effective contains the effective capability set.
1307 * @inheritable contains the inheritable capability set.
1308 * @permitted contains the permitted capability set.
1309 * Return 0 and update @new if permission is granted.
1311 * Check whether the @tsk process has the @cap capability in the indicated
1313 * @cred contains the credentials to use.
1314 * @ns contains the user namespace we want the capability in
1315 * @cap contains the capability <include/linux/capability.h>.
1316 * @audit: Whether to write an audit message or not
1317 * Return 0 if the capability is granted for @tsk.
1319 * Check permission before accessing the kernel message ring or changing
1320 * logging to the console.
1321 * See the syslog(2) manual page for an explanation of the @type values.
1322 * @type contains the type of action.
1323 * @from_file indicates the context of action (if it came from /proc).
1324 * Return 0 if permission is granted.
1326 * Check permission to change the system time.
1327 * struct timespec and timezone are defined in include/linux/time.h
1328 * @ts contains new time
1329 * @tz contains new timezone
1330 * Return 0 if permission is granted.
1331 * @vm_enough_memory:
1332 * Check permissions for allocating a new virtual mapping.
1333 * @mm contains the mm struct it is being added to.
1334 * @pages contains the number of pages.
1335 * Return 0 if permission is granted.
1338 * Check if the extended attribute specified by @name
1339 * represents a MAC label. Returns 1 if name is a MAC
1340 * attribute otherwise returns 0.
1341 * @name full extended attribute name to check against
1342 * LSM as a MAC label.
1345 * Convert secid to security context. If secdata is NULL the length of
1346 * the result will be returned in seclen, but no secdata will be returned.
1347 * This does mean that the length could change between calls to check the
1348 * length and the next call which actually allocates and returns the secdata.
1349 * @secid contains the security ID.
1350 * @secdata contains the pointer that stores the converted security context.
1351 * @seclen pointer which contains the length of the data
1353 * Convert security context to secid.
1354 * @secid contains the pointer to the generated security ID.
1355 * @secdata contains the security context.
1358 * Release the security context.
1359 * @secdata contains the security context.
1360 * @seclen contains the length of the security context.
1362 * Security hooks for Audit
1365 * Allocate and initialize an LSM audit rule structure.
1366 * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
1367 * @op contains the operator the rule uses.
1368 * @rulestr contains the context where the rule will be applied to.
1369 * @lsmrule contains a pointer to receive the result.
1370 * Return 0 if @lsmrule has been successfully set,
1371 * -EINVAL in case of an invalid rule.
1373 * @audit_rule_known:
1374 * Specifies whether given @rule contains any fields related to current LSM.
1375 * @rule contains the audit rule of interest.
1376 * Return 1 in case of relation found, 0 otherwise.
1378 * @audit_rule_match:
1379 * Determine if given @secid matches a rule previously approved
1380 * by @audit_rule_known.
1381 * @secid contains the security id in question.
1382 * @field contains the field which relates to current LSM.
1383 * @op contains the operator that will be used for matching.
1384 * @rule points to the audit rule that will be checked against.
1385 * @actx points to the audit context associated with the check.
1386 * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
1389 * Deallocate the LSM audit rule structure previously allocated by
1391 * @rule contains the allocated rule
1393 * @inode_notifysecctx:
1394 * Notify the security module of what the security context of an inode
1395 * should be. Initializes the incore security context managed by the
1396 * security module for this inode. Example usage: NFS client invokes
1397 * this hook to initialize the security context in its incore inode to the
1398 * value provided by the server for the file when the server returned the
1399 * file's attributes to the client.
1401 * Must be called with inode->i_mutex locked.
1403 * @inode we wish to set the security context of.
1404 * @ctx contains the string which we wish to set in the inode.
1405 * @ctxlen contains the length of @ctx.
1408 * Change the security context of an inode. Updates the
1409 * incore security context managed by the security module and invokes the
1410 * fs code as needed (via __vfs_setxattr_noperm) to update any backing
1411 * xattrs that represent the context. Example usage: NFS server invokes
1412 * this hook to change the security context in its incore inode and on the
1413 * backing filesystem to a value provided by the client on a SETATTR
1416 * Must be called with inode->i_mutex locked.
1418 * @dentry contains the inode we wish to set the security context of.
1419 * @ctx contains the string which we wish to set in the inode.
1420 * @ctxlen contains the length of @ctx.
1423 * On success, returns 0 and fills out @ctx and @ctxlen with the security
1424 * context for the given @inode.
1426 * @inode we wish to get the security context of.
1427 * @ctx is a pointer in which to place the allocated security context.
1428 * @ctxlen points to the place to put the length of @ctx.
1429 * This is the main security structure.
1431 struct security_operations {
1432 char name[SECURITY_NAME_MAX + 1];
1434 int (*ptrace_access_check) (struct task_struct *child, unsigned int mode);
1435 int (*ptrace_traceme) (struct task_struct *parent);
1436 int (*capget) (struct task_struct *target,
1437 kernel_cap_t *effective,
1438 kernel_cap_t *inheritable, kernel_cap_t *permitted);
1439 int (*capset) (struct cred *new,
1440 const struct cred *old,
1441 const kernel_cap_t *effective,
1442 const kernel_cap_t *inheritable,
1443 const kernel_cap_t *permitted);
1444 int (*capable) (const struct cred *cred, struct user_namespace *ns,
1445 int cap, int audit);
1446 int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
1447 int (*quota_on) (struct dentry *dentry);
1448 int (*syslog) (int type);
1449 int (*settime) (const struct timespec *ts, const struct timezone *tz);
1450 int (*vm_enough_memory) (struct mm_struct *mm, long pages);
1452 int (*bprm_set_creds) (struct linux_binprm *bprm);
1453 int (*bprm_check_security) (struct linux_binprm *bprm);
1454 int (*bprm_secureexec) (struct linux_binprm *bprm);
1455 void (*bprm_committing_creds) (struct linux_binprm *bprm);
1456 void (*bprm_committed_creds) (struct linux_binprm *bprm);
1458 int (*sb_alloc_security) (struct super_block *sb);
1459 void (*sb_free_security) (struct super_block *sb);
1460 int (*sb_copy_data) (char *orig, char *copy);
1461 int (*sb_remount) (struct super_block *sb, void *data);
1462 int (*sb_kern_mount) (struct super_block *sb, int flags, void *data);
1463 int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
1464 int (*sb_statfs) (struct dentry *dentry);
1465 int (*sb_mount) (const char *dev_name, struct path *path,
1466 const char *type, unsigned long flags, void *data);
1467 int (*sb_umount) (struct vfsmount *mnt, int flags);
1468 int (*sb_pivotroot) (struct path *old_path,
1469 struct path *new_path);
1470 int (*sb_set_mnt_opts) (struct super_block *sb,
1471 struct security_mnt_opts *opts,
1472 unsigned long kern_flags,
1473 unsigned long *set_kern_flags);
1474 int (*sb_clone_mnt_opts) (const struct super_block *oldsb,
1475 struct super_block *newsb);
1476 int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
1477 int (*dentry_init_security) (struct dentry *dentry, int mode,
1478 struct qstr *name, void **ctx,
1482 #ifdef CONFIG_SECURITY_PATH
1483 int (*path_unlink) (struct path *dir, struct dentry *dentry);
1484 int (*path_mkdir) (struct path *dir, struct dentry *dentry, umode_t mode);
1485 int (*path_rmdir) (struct path *dir, struct dentry *dentry);
1486 int (*path_mknod) (struct path *dir, struct dentry *dentry, umode_t mode,
1488 int (*path_truncate) (struct path *path);
1489 int (*path_symlink) (struct path *dir, struct dentry *dentry,
1490 const char *old_name);
1491 int (*path_link) (struct dentry *old_dentry, struct path *new_dir,
1492 struct dentry *new_dentry);
1493 int (*path_rename) (struct path *old_dir, struct dentry *old_dentry,
1494 struct path *new_dir, struct dentry *new_dentry);
1495 int (*path_chmod) (struct path *path, umode_t mode);
1496 int (*path_chown) (struct path *path, kuid_t uid, kgid_t gid);
1497 int (*path_chroot) (struct path *path);
1500 int (*inode_alloc_security) (struct inode *inode);
1501 void (*inode_free_security) (struct inode *inode);
1502 int (*inode_init_security) (struct inode *inode, struct inode *dir,
1503 const struct qstr *qstr, const char **name,
1504 void **value, size_t *len);
1505 int (*inode_create) (struct inode *dir,
1506 struct dentry *dentry, umode_t mode);
1507 int (*inode_link) (struct dentry *old_dentry,
1508 struct inode *dir, struct dentry *new_dentry);
1509 int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
1510 int (*inode_symlink) (struct inode *dir,
1511 struct dentry *dentry, const char *old_name);
1512 int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, umode_t mode);
1513 int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
1514 int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
1515 umode_t mode, dev_t dev);
1516 int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
1517 struct inode *new_dir, struct dentry *new_dentry);
1518 int (*inode_readlink) (struct dentry *dentry);
1519 int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
1520 int (*inode_permission) (struct inode *inode, int mask);
1521 int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
1522 int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
1523 int (*inode_setxattr) (struct dentry *dentry, const char *name,
1524 const void *value, size_t size, int flags);
1525 void (*inode_post_setxattr) (struct dentry *dentry, const char *name,
1526 const void *value, size_t size, int flags);
1527 int (*inode_getxattr) (struct dentry *dentry, const char *name);
1528 int (*inode_listxattr) (struct dentry *dentry);
1529 int (*inode_removexattr) (struct dentry *dentry, const char *name);
1530 int (*inode_need_killpriv) (struct dentry *dentry);
1531 int (*inode_killpriv) (struct dentry *dentry);
1532 int (*inode_getsecurity) (const struct inode *inode, const char *name, void **buffer, bool alloc);
1533 int (*inode_setsecurity) (struct inode *inode, const char *name, const void *value, size_t size, int flags);
1534 int (*inode_listsecurity) (struct inode *inode, char *buffer, size_t buffer_size);
1535 void (*inode_getsecid) (const struct inode *inode, u32 *secid);
1537 int (*file_permission) (struct file *file, int mask);
1538 int (*file_alloc_security) (struct file *file);
1539 void (*file_free_security) (struct file *file);
1540 int (*file_ioctl) (struct file *file, unsigned int cmd,
1542 int (*mmap_addr) (unsigned long addr);
1543 int (*mmap_file) (struct file *file,
1544 unsigned long reqprot, unsigned long prot,
1545 unsigned long flags);
1546 int (*file_mprotect) (struct vm_area_struct *vma,
1547 unsigned long reqprot,
1548 unsigned long prot);
1549 int (*file_lock) (struct file *file, unsigned int cmd);
1550 int (*file_fcntl) (struct file *file, unsigned int cmd,
1552 int (*file_set_fowner) (struct file *file);
1553 int (*file_send_sigiotask) (struct task_struct *tsk,
1554 struct fown_struct *fown, int sig);
1555 int (*file_receive) (struct file *file);
1556 int (*file_open) (struct file *file, const struct cred *cred);
1558 int (*task_create) (unsigned long clone_flags);
1559 void (*task_free) (struct task_struct *task);
1560 int (*cred_alloc_blank) (struct cred *cred, gfp_t gfp);
1561 void (*cred_free) (struct cred *cred);
1562 int (*cred_prepare)(struct cred *new, const struct cred *old,
1564 void (*cred_transfer)(struct cred *new, const struct cred *old);
1565 int (*kernel_act_as)(struct cred *new, u32 secid);
1566 int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
1567 int (*kernel_module_request)(char *kmod_name);
1568 int (*kernel_module_from_file)(struct file *file);
1569 int (*task_fix_setuid) (struct cred *new, const struct cred *old,
1571 int (*task_setpgid) (struct task_struct *p, pid_t pgid);
1572 int (*task_getpgid) (struct task_struct *p);
1573 int (*task_getsid) (struct task_struct *p);
1574 void (*task_getsecid) (struct task_struct *p, u32 *secid);
1575 int (*task_setnice) (struct task_struct *p, int nice);
1576 int (*task_setioprio) (struct task_struct *p, int ioprio);
1577 int (*task_getioprio) (struct task_struct *p);
1578 int (*task_setrlimit) (struct task_struct *p, unsigned int resource,
1579 struct rlimit *new_rlim);
1580 int (*task_setscheduler) (struct task_struct *p);
1581 int (*task_getscheduler) (struct task_struct *p);
1582 int (*task_movememory) (struct task_struct *p);
1583 int (*task_kill) (struct task_struct *p,
1584 struct siginfo *info, int sig, u32 secid);
1585 int (*task_wait) (struct task_struct *p);
1586 int (*task_prctl) (int option, unsigned long arg2,
1587 unsigned long arg3, unsigned long arg4,
1588 unsigned long arg5);
1589 void (*task_to_inode) (struct task_struct *p, struct inode *inode);
1591 int (*ipc_permission) (struct kern_ipc_perm *ipcp, short flag);
1592 void (*ipc_getsecid) (struct kern_ipc_perm *ipcp, u32 *secid);
1594 int (*msg_msg_alloc_security) (struct msg_msg *msg);
1595 void (*msg_msg_free_security) (struct msg_msg *msg);
1597 int (*msg_queue_alloc_security) (struct msg_queue *msq);
1598 void (*msg_queue_free_security) (struct msg_queue *msq);
1599 int (*msg_queue_associate) (struct msg_queue *msq, int msqflg);
1600 int (*msg_queue_msgctl) (struct msg_queue *msq, int cmd);
1601 int (*msg_queue_msgsnd) (struct msg_queue *msq,
1602 struct msg_msg *msg, int msqflg);
1603 int (*msg_queue_msgrcv) (struct msg_queue *msq,
1604 struct msg_msg *msg,
1605 struct task_struct *target,
1606 long type, int mode);
1608 int (*shm_alloc_security) (struct shmid_kernel *shp);
1609 void (*shm_free_security) (struct shmid_kernel *shp);
1610 int (*shm_associate) (struct shmid_kernel *shp, int shmflg);
1611 int (*shm_shmctl) (struct shmid_kernel *shp, int cmd);
1612 int (*shm_shmat) (struct shmid_kernel *shp,
1613 char __user *shmaddr, int shmflg);
1615 int (*sem_alloc_security) (struct sem_array *sma);
1616 void (*sem_free_security) (struct sem_array *sma);
1617 int (*sem_associate) (struct sem_array *sma, int semflg);
1618 int (*sem_semctl) (struct sem_array *sma, int cmd);
1619 int (*sem_semop) (struct sem_array *sma,
1620 struct sembuf *sops, unsigned nsops, int alter);
1622 int (*netlink_send) (struct sock *sk, struct sk_buff *skb);
1624 void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1626 int (*getprocattr) (struct task_struct *p, char *name, char **value);
1627 int (*setprocattr) (struct task_struct *p, char *name, void *value, size_t size);
1628 int (*ismaclabel) (const char *name);
1629 int (*secid_to_secctx) (u32 secid, char **secdata, u32 *seclen);
1630 int (*secctx_to_secid) (const char *secdata, u32 seclen, u32 *secid);
1631 void (*release_secctx) (char *secdata, u32 seclen);
1633 int (*inode_notifysecctx)(struct inode *inode, void *ctx, u32 ctxlen);
1634 int (*inode_setsecctx)(struct dentry *dentry, void *ctx, u32 ctxlen);
1635 int (*inode_getsecctx)(struct inode *inode, void **ctx, u32 *ctxlen);
1637 #ifdef CONFIG_SECURITY_NETWORK
1638 int (*unix_stream_connect) (struct sock *sock, struct sock *other, struct sock *newsk);
1639 int (*unix_may_send) (struct socket *sock, struct socket *other);
1641 int (*socket_create) (int family, int type, int protocol, int kern);
1642 int (*socket_post_create) (struct socket *sock, int family,
1643 int type, int protocol, int kern);
1644 int (*socket_bind) (struct socket *sock,
1645 struct sockaddr *address, int addrlen);
1646 int (*socket_connect) (struct socket *sock,
1647 struct sockaddr *address, int addrlen);
1648 int (*socket_listen) (struct socket *sock, int backlog);
1649 int (*socket_accept) (struct socket *sock, struct socket *newsock);
1650 int (*socket_sendmsg) (struct socket *sock,
1651 struct msghdr *msg, int size);
1652 int (*socket_recvmsg) (struct socket *sock,
1653 struct msghdr *msg, int size, int flags);
1654 int (*socket_getsockname) (struct socket *sock);
1655 int (*socket_getpeername) (struct socket *sock);
1656 int (*socket_getsockopt) (struct socket *sock, int level, int optname);
1657 int (*socket_setsockopt) (struct socket *sock, int level, int optname);
1658 int (*socket_shutdown) (struct socket *sock, int how);
1659 int (*socket_sock_rcv_skb) (struct sock *sk, struct sk_buff *skb);
1660 int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
1661 int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
1662 int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
1663 void (*sk_free_security) (struct sock *sk);
1664 void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
1665 void (*sk_getsecid) (struct sock *sk, u32 *secid);
1666 void (*sock_graft) (struct sock *sk, struct socket *parent);
1667 int (*inet_conn_request) (struct sock *sk, struct sk_buff *skb,
1668 struct request_sock *req);
1669 void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req);
1670 void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb);
1671 int (*secmark_relabel_packet) (u32 secid);
1672 void (*secmark_refcount_inc) (void);
1673 void (*secmark_refcount_dec) (void);
1674 void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
1675 int (*tun_dev_alloc_security) (void **security);
1676 void (*tun_dev_free_security) (void *security);
1677 int (*tun_dev_create) (void);
1678 int (*tun_dev_attach_queue) (void *security);
1679 int (*tun_dev_attach) (struct sock *sk, void *security);
1680 int (*tun_dev_open) (void *security);
1681 void (*skb_owned_by) (struct sk_buff *skb, struct sock *sk);
1682 #endif /* CONFIG_SECURITY_NETWORK */
1684 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1685 int (*xfrm_policy_alloc_security) (struct xfrm_sec_ctx **ctxp,
1686 struct xfrm_user_sec_ctx *sec_ctx);
1687 int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
1688 void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
1689 int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
1690 int (*xfrm_state_alloc) (struct xfrm_state *x,
1691 struct xfrm_user_sec_ctx *sec_ctx);
1692 int (*xfrm_state_alloc_acquire) (struct xfrm_state *x,
1693 struct xfrm_sec_ctx *polsec,
1695 void (*xfrm_state_free_security) (struct xfrm_state *x);
1696 int (*xfrm_state_delete_security) (struct xfrm_state *x);
1697 int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1698 int (*xfrm_state_pol_flow_match) (struct xfrm_state *x,
1699 struct xfrm_policy *xp,
1700 const struct flowi *fl);
1701 int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall);
1702 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1704 /* key management security hooks */
1706 int (*key_alloc) (struct key *key, const struct cred *cred, unsigned long flags);
1707 void (*key_free) (struct key *key);
1708 int (*key_permission) (key_ref_t key_ref,
1709 const struct cred *cred,
1711 int (*key_getsecurity)(struct key *key, char **_buffer);
1712 #endif /* CONFIG_KEYS */
1715 int (*audit_rule_init) (u32 field, u32 op, char *rulestr, void **lsmrule);
1716 int (*audit_rule_known) (struct audit_krule *krule);
1717 int (*audit_rule_match) (u32 secid, u32 field, u32 op, void *lsmrule,
1718 struct audit_context *actx);
1719 void (*audit_rule_free) (void *lsmrule);
1720 #endif /* CONFIG_AUDIT */
1724 extern int security_init(void);
1725 extern int security_module_enable(struct security_operations *ops);
1726 extern int register_security(struct security_operations *ops);
1727 extern void __init security_fixup_ops(struct security_operations *ops);
1730 /* Security operations */
1731 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
1732 int security_ptrace_traceme(struct task_struct *parent);
1733 int security_capget(struct task_struct *target,
1734 kernel_cap_t *effective,
1735 kernel_cap_t *inheritable,
1736 kernel_cap_t *permitted);
1737 int security_capset(struct cred *new, const struct cred *old,
1738 const kernel_cap_t *effective,
1739 const kernel_cap_t *inheritable,
1740 const kernel_cap_t *permitted);
1741 int security_capable(const struct cred *cred, struct user_namespace *ns,
1743 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
1745 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
1746 int security_quota_on(struct dentry *dentry);
1747 int security_syslog(int type);
1748 int security_settime(const struct timespec *ts, const struct timezone *tz);
1749 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
1750 int security_bprm_set_creds(struct linux_binprm *bprm);
1751 int security_bprm_check(struct linux_binprm *bprm);
1752 void security_bprm_committing_creds(struct linux_binprm *bprm);
1753 void security_bprm_committed_creds(struct linux_binprm *bprm);
1754 int security_bprm_secureexec(struct linux_binprm *bprm);
1755 int security_sb_alloc(struct super_block *sb);
1756 void security_sb_free(struct super_block *sb);
1757 int security_sb_copy_data(char *orig, char *copy);
1758 int security_sb_remount(struct super_block *sb, void *data);
1759 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
1760 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
1761 int security_sb_statfs(struct dentry *dentry);
1762 int security_sb_mount(const char *dev_name, struct path *path,
1763 const char *type, unsigned long flags, void *data);
1764 int security_sb_umount(struct vfsmount *mnt, int flags);
1765 int security_sb_pivotroot(struct path *old_path, struct path *new_path);
1766 int security_sb_set_mnt_opts(struct super_block *sb,
1767 struct security_mnt_opts *opts,
1768 unsigned long kern_flags,
1769 unsigned long *set_kern_flags);
1770 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
1771 struct super_block *newsb);
1772 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
1773 int security_dentry_init_security(struct dentry *dentry, int mode,
1774 struct qstr *name, void **ctx,
1777 int security_inode_alloc(struct inode *inode);
1778 void security_inode_free(struct inode *inode);
1779 int security_inode_init_security(struct inode *inode, struct inode *dir,
1780 const struct qstr *qstr,
1781 initxattrs initxattrs, void *fs_data);
1782 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
1783 const struct qstr *qstr, const char **name,
1784 void **value, size_t *len);
1785 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
1786 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1787 struct dentry *new_dentry);
1788 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
1789 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
1790 const char *old_name);
1791 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
1792 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
1793 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
1794 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
1795 struct inode *new_dir, struct dentry *new_dentry);
1796 int security_inode_readlink(struct dentry *dentry);
1797 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
1798 int security_inode_permission(struct inode *inode, int mask);
1799 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
1800 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
1801 int security_inode_setxattr(struct dentry *dentry, const char *name,
1802 const void *value, size_t size, int flags);
1803 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1804 const void *value, size_t size, int flags);
1805 int security_inode_getxattr(struct dentry *dentry, const char *name);
1806 int security_inode_listxattr(struct dentry *dentry);
1807 int security_inode_removexattr(struct dentry *dentry, const char *name);
1808 int security_inode_need_killpriv(struct dentry *dentry);
1809 int security_inode_killpriv(struct dentry *dentry);
1810 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
1811 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1812 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
1813 void security_inode_getsecid(const struct inode *inode, u32 *secid);
1814 int security_file_permission(struct file *file, int mask);
1815 int security_file_alloc(struct file *file);
1816 void security_file_free(struct file *file);
1817 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
1818 int security_mmap_file(struct file *file, unsigned long prot,
1819 unsigned long flags);
1820 int security_mmap_addr(unsigned long addr);
1821 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1822 unsigned long prot);
1823 int security_file_lock(struct file *file, unsigned int cmd);
1824 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
1825 int security_file_set_fowner(struct file *file);
1826 int security_file_send_sigiotask(struct task_struct *tsk,
1827 struct fown_struct *fown, int sig);
1828 int security_file_receive(struct file *file);
1829 int security_file_open(struct file *file, const struct cred *cred);
1830 int security_task_create(unsigned long clone_flags);
1831 void security_task_free(struct task_struct *task);
1832 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
1833 void security_cred_free(struct cred *cred);
1834 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
1835 void security_transfer_creds(struct cred *new, const struct cred *old);
1836 int security_kernel_act_as(struct cred *new, u32 secid);
1837 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
1838 int security_kernel_module_request(char *kmod_name);
1839 int security_kernel_module_from_file(struct file *file);
1840 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1842 int security_task_setpgid(struct task_struct *p, pid_t pgid);
1843 int security_task_getpgid(struct task_struct *p);
1844 int security_task_getsid(struct task_struct *p);
1845 void security_task_getsecid(struct task_struct *p, u32 *secid);
1846 int security_task_setnice(struct task_struct *p, int nice);
1847 int security_task_setioprio(struct task_struct *p, int ioprio);
1848 int security_task_getioprio(struct task_struct *p);
1849 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
1850 struct rlimit *new_rlim);
1851 int security_task_setscheduler(struct task_struct *p);
1852 int security_task_getscheduler(struct task_struct *p);
1853 int security_task_movememory(struct task_struct *p);
1854 int security_task_kill(struct task_struct *p, struct siginfo *info,
1855 int sig, u32 secid);
1856 int security_task_wait(struct task_struct *p);
1857 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1858 unsigned long arg4, unsigned long arg5);
1859 void security_task_to_inode(struct task_struct *p, struct inode *inode);
1860 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
1861 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
1862 int security_msg_msg_alloc(struct msg_msg *msg);
1863 void security_msg_msg_free(struct msg_msg *msg);
1864 int security_msg_queue_alloc(struct msg_queue *msq);
1865 void security_msg_queue_free(struct msg_queue *msq);
1866 int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
1867 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
1868 int security_msg_queue_msgsnd(struct msg_queue *msq,
1869 struct msg_msg *msg, int msqflg);
1870 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1871 struct task_struct *target, long type, int mode);
1872 int security_shm_alloc(struct shmid_kernel *shp);
1873 void security_shm_free(struct shmid_kernel *shp);
1874 int security_shm_associate(struct shmid_kernel *shp, int shmflg);
1875 int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
1876 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
1877 int security_sem_alloc(struct sem_array *sma);
1878 void security_sem_free(struct sem_array *sma);
1879 int security_sem_associate(struct sem_array *sma, int semflg);
1880 int security_sem_semctl(struct sem_array *sma, int cmd);
1881 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1882 unsigned nsops, int alter);
1883 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
1884 int security_getprocattr(struct task_struct *p, char *name, char **value);
1885 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
1886 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
1887 int security_ismaclabel(const char *name);
1888 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
1889 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
1890 void security_release_secctx(char *secdata, u32 seclen);
1892 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
1893 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
1894 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
1895 #else /* CONFIG_SECURITY */
1896 struct security_mnt_opts {
1899 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
1903 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
1908 * This is the default capabilities functionality. Most of these functions
1909 * are just stubbed out, but a few must call the proper capable code.
1912 static inline int security_init(void)
1917 static inline int security_ptrace_access_check(struct task_struct *child,
1920 return cap_ptrace_access_check(child, mode);
1923 static inline int security_ptrace_traceme(struct task_struct *parent)
1925 return cap_ptrace_traceme(parent);
1928 static inline int security_capget(struct task_struct *target,
1929 kernel_cap_t *effective,
1930 kernel_cap_t *inheritable,
1931 kernel_cap_t *permitted)
1933 return cap_capget(target, effective, inheritable, permitted);
1936 static inline int security_capset(struct cred *new,
1937 const struct cred *old,
1938 const kernel_cap_t *effective,
1939 const kernel_cap_t *inheritable,
1940 const kernel_cap_t *permitted)
1942 return cap_capset(new, old, effective, inheritable, permitted);
1945 static inline int security_capable(const struct cred *cred,
1946 struct user_namespace *ns, int cap)
1948 return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT);
1951 static inline int security_capable_noaudit(const struct cred *cred,
1952 struct user_namespace *ns, int cap) {
1953 return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
1956 static inline int security_quotactl(int cmds, int type, int id,
1957 struct super_block *sb)
1962 static inline int security_quota_on(struct dentry *dentry)
1967 static inline int security_syslog(int type)
1972 static inline int security_settime(const struct timespec *ts,
1973 const struct timezone *tz)
1975 return cap_settime(ts, tz);
1978 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
1980 return cap_vm_enough_memory(mm, pages);
1983 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
1985 return cap_bprm_set_creds(bprm);
1988 static inline int security_bprm_check(struct linux_binprm *bprm)
1993 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
1997 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
2001 static inline int security_bprm_secureexec(struct linux_binprm *bprm)
2003 return cap_bprm_secureexec(bprm);
2006 static inline int security_sb_alloc(struct super_block *sb)
2011 static inline void security_sb_free(struct super_block *sb)
2014 static inline int security_sb_copy_data(char *orig, char *copy)
2019 static inline int security_sb_remount(struct super_block *sb, void *data)
2024 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
2029 static inline int security_sb_show_options(struct seq_file *m,
2030 struct super_block *sb)
2035 static inline int security_sb_statfs(struct dentry *dentry)
2040 static inline int security_sb_mount(const char *dev_name, struct path *path,
2041 const char *type, unsigned long flags,
2047 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
2052 static inline int security_sb_pivotroot(struct path *old_path,
2053 struct path *new_path)
2058 static inline int security_sb_set_mnt_opts(struct super_block *sb,
2059 struct security_mnt_opts *opts,
2060 unsigned long kern_flags,
2061 unsigned long *set_kern_flags)
2066 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
2067 struct super_block *newsb)
2072 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
2077 static inline int security_inode_alloc(struct inode *inode)
2082 static inline void security_inode_free(struct inode *inode)
2085 static inline int security_dentry_init_security(struct dentry *dentry,
2095 static inline int security_inode_init_security(struct inode *inode,
2097 const struct qstr *qstr,
2098 const initxattrs initxattrs,
2104 static inline int security_old_inode_init_security(struct inode *inode,
2106 const struct qstr *qstr,
2108 void **value, size_t *len)
2113 static inline int security_inode_create(struct inode *dir,
2114 struct dentry *dentry,
2120 static inline int security_inode_link(struct dentry *old_dentry,
2122 struct dentry *new_dentry)
2127 static inline int security_inode_unlink(struct inode *dir,
2128 struct dentry *dentry)
2133 static inline int security_inode_symlink(struct inode *dir,
2134 struct dentry *dentry,
2135 const char *old_name)
2140 static inline int security_inode_mkdir(struct inode *dir,
2141 struct dentry *dentry,
2147 static inline int security_inode_rmdir(struct inode *dir,
2148 struct dentry *dentry)
2153 static inline int security_inode_mknod(struct inode *dir,
2154 struct dentry *dentry,
2155 int mode, dev_t dev)
2160 static inline int security_inode_rename(struct inode *old_dir,
2161 struct dentry *old_dentry,
2162 struct inode *new_dir,
2163 struct dentry *new_dentry)
2168 static inline int security_inode_readlink(struct dentry *dentry)
2173 static inline int security_inode_follow_link(struct dentry *dentry,
2174 struct nameidata *nd)
2179 static inline int security_inode_permission(struct inode *inode, int mask)
2184 static inline int security_inode_setattr(struct dentry *dentry,
2190 static inline int security_inode_getattr(struct vfsmount *mnt,
2191 struct dentry *dentry)
2196 static inline int security_inode_setxattr(struct dentry *dentry,
2197 const char *name, const void *value, size_t size, int flags)
2199 return cap_inode_setxattr(dentry, name, value, size, flags);
2202 static inline void security_inode_post_setxattr(struct dentry *dentry,
2203 const char *name, const void *value, size_t size, int flags)
2206 static inline int security_inode_getxattr(struct dentry *dentry,
2212 static inline int security_inode_listxattr(struct dentry *dentry)
2217 static inline int security_inode_removexattr(struct dentry *dentry,
2220 return cap_inode_removexattr(dentry, name);
2223 static inline int security_inode_need_killpriv(struct dentry *dentry)
2225 return cap_inode_need_killpriv(dentry);
2228 static inline int security_inode_killpriv(struct dentry *dentry)
2230 return cap_inode_killpriv(dentry);
2233 static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
2238 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
2243 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
2248 static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
2253 static inline int security_file_permission(struct file *file, int mask)
2258 static inline int security_file_alloc(struct file *file)
2263 static inline void security_file_free(struct file *file)
2266 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
2272 static inline int security_mmap_file(struct file *file, unsigned long prot,
2273 unsigned long flags)
2278 static inline int security_mmap_addr(unsigned long addr)
2280 return cap_mmap_addr(addr);
2283 static inline int security_file_mprotect(struct vm_area_struct *vma,
2284 unsigned long reqprot,
2290 static inline int security_file_lock(struct file *file, unsigned int cmd)
2295 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
2301 static inline int security_file_set_fowner(struct file *file)
2306 static inline int security_file_send_sigiotask(struct task_struct *tsk,
2307 struct fown_struct *fown,
2313 static inline int security_file_receive(struct file *file)
2318 static inline int security_file_open(struct file *file,
2319 const struct cred *cred)
2324 static inline int security_task_create(unsigned long clone_flags)
2329 static inline void security_task_free(struct task_struct *task)
2332 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
2337 static inline void security_cred_free(struct cred *cred)
2340 static inline int security_prepare_creds(struct cred *new,
2341 const struct cred *old,
2347 static inline void security_transfer_creds(struct cred *new,
2348 const struct cred *old)
2352 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
2357 static inline int security_kernel_create_files_as(struct cred *cred,
2358 struct inode *inode)
2363 static inline int security_kernel_module_request(char *kmod_name)
2368 static inline int security_kernel_module_from_file(struct file *file)
2373 static inline int security_task_fix_setuid(struct cred *new,
2374 const struct cred *old,
2377 return cap_task_fix_setuid(new, old, flags);
2380 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
2385 static inline int security_task_getpgid(struct task_struct *p)
2390 static inline int security_task_getsid(struct task_struct *p)
2395 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
2400 static inline int security_task_setnice(struct task_struct *p, int nice)
2402 return cap_task_setnice(p, nice);
2405 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
2407 return cap_task_setioprio(p, ioprio);
2410 static inline int security_task_getioprio(struct task_struct *p)
2415 static inline int security_task_setrlimit(struct task_struct *p,
2416 unsigned int resource,
2417 struct rlimit *new_rlim)
2422 static inline int security_task_setscheduler(struct task_struct *p)
2424 return cap_task_setscheduler(p);
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_ismaclabel(const char *name)
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 sock *sock, struct sock *other, struct sock *newsk);
2618 int security_unix_may_send(struct socket *sock, struct socket *other);
2619 int security_socket_create(int family, int type, int protocol, int kern);
2620 int security_socket_post_create(struct socket *sock, int family,
2621 int type, int protocol, int kern);
2622 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
2623 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
2624 int security_socket_listen(struct socket *sock, int backlog);
2625 int security_socket_accept(struct socket *sock, struct socket *newsock);
2626 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
2627 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2628 int size, int flags);
2629 int security_socket_getsockname(struct socket *sock);
2630 int security_socket_getpeername(struct socket *sock);
2631 int security_socket_getsockopt(struct socket *sock, int level, int optname);
2632 int security_socket_setsockopt(struct socket *sock, int level, int optname);
2633 int security_socket_shutdown(struct socket *sock, int how);
2634 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
2635 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2636 int __user *optlen, unsigned len);
2637 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
2638 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
2639 void security_sk_free(struct sock *sk);
2640 void security_sk_clone(const struct sock *sk, struct sock *newsk);
2641 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
2642 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
2643 void security_sock_graft(struct sock*sk, struct socket *parent);
2644 int security_inet_conn_request(struct sock *sk,
2645 struct sk_buff *skb, struct request_sock *req);
2646 void security_inet_csk_clone(struct sock *newsk,
2647 const struct request_sock *req);
2648 void security_inet_conn_established(struct sock *sk,
2649 struct sk_buff *skb);
2650 int security_secmark_relabel_packet(u32 secid);
2651 void security_secmark_refcount_inc(void);
2652 void security_secmark_refcount_dec(void);
2653 int security_tun_dev_alloc_security(void **security);
2654 void security_tun_dev_free_security(void *security);
2655 int security_tun_dev_create(void);
2656 int security_tun_dev_attach_queue(void *security);
2657 int security_tun_dev_attach(struct sock *sk, void *security);
2658 int security_tun_dev_open(void *security);
2660 void security_skb_owned_by(struct sk_buff *skb, struct sock *sk);
2662 #else /* CONFIG_SECURITY_NETWORK */
2663 static inline int security_unix_stream_connect(struct sock *sock,
2670 static inline int security_unix_may_send(struct socket *sock,
2671 struct socket *other)
2676 static inline int security_socket_create(int family, int type,
2677 int protocol, int kern)
2682 static inline int security_socket_post_create(struct socket *sock,
2685 int protocol, int kern)
2690 static inline int security_socket_bind(struct socket *sock,
2691 struct sockaddr *address,
2697 static inline int security_socket_connect(struct socket *sock,
2698 struct sockaddr *address,
2704 static inline int security_socket_listen(struct socket *sock, int backlog)
2709 static inline int security_socket_accept(struct socket *sock,
2710 struct socket *newsock)
2715 static inline int security_socket_sendmsg(struct socket *sock,
2716 struct msghdr *msg, int size)
2721 static inline int security_socket_recvmsg(struct socket *sock,
2722 struct msghdr *msg, int size,
2728 static inline int security_socket_getsockname(struct socket *sock)
2733 static inline int security_socket_getpeername(struct socket *sock)
2738 static inline int security_socket_getsockopt(struct socket *sock,
2739 int level, int optname)
2744 static inline int security_socket_setsockopt(struct socket *sock,
2745 int level, int optname)
2750 static inline int security_socket_shutdown(struct socket *sock, int how)
2754 static inline int security_sock_rcv_skb(struct sock *sk,
2755 struct sk_buff *skb)
2760 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2761 int __user *optlen, unsigned len)
2763 return -ENOPROTOOPT;
2766 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
2768 return -ENOPROTOOPT;
2771 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2776 static inline void security_sk_free(struct sock *sk)
2780 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
2784 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
2788 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2792 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
2796 static inline int security_inet_conn_request(struct sock *sk,
2797 struct sk_buff *skb, struct request_sock *req)
2802 static inline void security_inet_csk_clone(struct sock *newsk,
2803 const struct request_sock *req)
2807 static inline void security_inet_conn_established(struct sock *sk,
2808 struct sk_buff *skb)
2812 static inline int security_secmark_relabel_packet(u32 secid)
2817 static inline void security_secmark_refcount_inc(void)
2821 static inline void security_secmark_refcount_dec(void)
2825 static inline int security_tun_dev_alloc_security(void **security)
2830 static inline void security_tun_dev_free_security(void *security)
2834 static inline int security_tun_dev_create(void)
2839 static inline int security_tun_dev_attach_queue(void *security)
2844 static inline int security_tun_dev_attach(struct sock *sk, void *security)
2849 static inline int security_tun_dev_open(void *security)
2854 static inline void security_skb_owned_by(struct sk_buff *skb, struct sock *sk)
2858 #endif /* CONFIG_SECURITY_NETWORK */
2860 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2862 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx);
2863 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
2864 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
2865 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
2866 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
2867 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2868 struct xfrm_sec_ctx *polsec, u32 secid);
2869 int security_xfrm_state_delete(struct xfrm_state *x);
2870 void security_xfrm_state_free(struct xfrm_state *x);
2871 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
2872 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2873 struct xfrm_policy *xp,
2874 const struct flowi *fl);
2875 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
2876 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
2878 #else /* CONFIG_SECURITY_NETWORK_XFRM */
2880 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
2885 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
2890 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
2894 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
2899 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
2900 struct xfrm_user_sec_ctx *sec_ctx)
2905 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2906 struct xfrm_sec_ctx *polsec, u32 secid)
2911 static inline void security_xfrm_state_free(struct xfrm_state *x)
2915 static inline int security_xfrm_state_delete(struct xfrm_state *x)
2920 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
2925 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2926 struct xfrm_policy *xp, const struct flowi *fl)
2931 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
2936 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2940 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2942 #ifdef CONFIG_SECURITY_PATH
2943 int security_path_unlink(struct path *dir, struct dentry *dentry);
2944 int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode);
2945 int security_path_rmdir(struct path *dir, struct dentry *dentry);
2946 int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode,
2948 int security_path_truncate(struct path *path);
2949 int security_path_symlink(struct path *dir, struct dentry *dentry,
2950 const char *old_name);
2951 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
2952 struct dentry *new_dentry);
2953 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
2954 struct path *new_dir, struct dentry *new_dentry);
2955 int security_path_chmod(struct path *path, umode_t mode);
2956 int security_path_chown(struct path *path, kuid_t uid, kgid_t gid);
2957 int security_path_chroot(struct path *path);
2958 #else /* CONFIG_SECURITY_PATH */
2959 static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
2964 static inline int security_path_mkdir(struct path *dir, struct dentry *dentry,
2970 static inline int security_path_rmdir(struct path *dir, struct dentry *dentry)
2975 static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
2976 umode_t mode, unsigned int dev)
2981 static inline int security_path_truncate(struct path *path)
2986 static inline int security_path_symlink(struct path *dir, struct dentry *dentry,
2987 const char *old_name)
2992 static inline int security_path_link(struct dentry *old_dentry,
2993 struct path *new_dir,
2994 struct dentry *new_dentry)
2999 static inline int security_path_rename(struct path *old_dir,
3000 struct dentry *old_dentry,
3001 struct path *new_dir,
3002 struct dentry *new_dentry)
3007 static inline int security_path_chmod(struct path *path, umode_t mode)
3012 static inline int security_path_chown(struct path *path, kuid_t uid, kgid_t gid)
3017 static inline int security_path_chroot(struct path *path)
3021 #endif /* CONFIG_SECURITY_PATH */
3024 #ifdef CONFIG_SECURITY
3026 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
3027 void security_key_free(struct key *key);
3028 int security_key_permission(key_ref_t key_ref,
3029 const struct cred *cred, key_perm_t perm);
3030 int security_key_getsecurity(struct key *key, char **_buffer);
3034 static inline int security_key_alloc(struct key *key,
3035 const struct cred *cred,
3036 unsigned long flags)
3041 static inline void security_key_free(struct key *key)
3045 static inline int security_key_permission(key_ref_t key_ref,
3046 const struct cred *cred,
3052 static inline int security_key_getsecurity(struct key *key, char **_buffer)
3059 #endif /* CONFIG_KEYS */
3062 #ifdef CONFIG_SECURITY
3063 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
3064 int security_audit_rule_known(struct audit_krule *krule);
3065 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
3066 struct audit_context *actx);
3067 void security_audit_rule_free(void *lsmrule);
3071 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
3077 static inline int security_audit_rule_known(struct audit_krule *krule)
3082 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
3083 void *lsmrule, struct audit_context *actx)
3088 static inline void security_audit_rule_free(void *lsmrule)
3091 #endif /* CONFIG_SECURITY */
3092 #endif /* CONFIG_AUDIT */
3094 #ifdef CONFIG_SECURITYFS
3096 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
3097 struct dentry *parent, void *data,
3098 const struct file_operations *fops);
3099 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
3100 extern void securityfs_remove(struct dentry *dentry);
3102 #else /* CONFIG_SECURITYFS */
3104 static inline struct dentry *securityfs_create_dir(const char *name,
3105 struct dentry *parent)
3107 return ERR_PTR(-ENODEV);
3110 static inline struct dentry *securityfs_create_file(const char *name,
3112 struct dentry *parent,
3114 const struct file_operations *fops)
3116 return ERR_PTR(-ENODEV);
3119 static inline void securityfs_remove(struct dentry *dentry)
3124 #ifdef CONFIG_SECURITY
3126 static inline char *alloc_secdata(void)
3128 return (char *)get_zeroed_page(GFP_KERNEL);
3131 static inline void free_secdata(void *secdata)
3133 free_page((unsigned long)secdata);
3138 static inline char *alloc_secdata(void)
3143 static inline void free_secdata(void *secdata)
3145 #endif /* CONFIG_SECURITY */
3147 #ifdef CONFIG_SECURITY_YAMA
3148 extern int yama_ptrace_access_check(struct task_struct *child,
3150 extern int yama_ptrace_traceme(struct task_struct *parent);
3151 extern void yama_task_free(struct task_struct *task);
3152 extern int yama_task_prctl(int option, unsigned long arg2, unsigned long arg3,
3153 unsigned long arg4, unsigned long arg5);
3155 static inline int yama_ptrace_access_check(struct task_struct *child,
3161 static inline int yama_ptrace_traceme(struct task_struct *parent)
3166 static inline void yama_task_free(struct task_struct *task)
3170 static inline int yama_task_prctl(int option, unsigned long arg2,
3171 unsigned long arg3, unsigned long arg4,
3176 #endif /* CONFIG_SECURITY_YAMA */
3178 #endif /* ! __LINUX_SECURITY_H */