4 * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
5 * Copyright (C) 2001 Greg Kroah-Hartman <greg@kroah.com>
6 * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
7 * Copyright (C) 2001 James Morris <jmorris@intercode.com.au>
8 * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group)
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * Due to this file being licensed under the GPL there is controversy over
16 * whether this permits you to write a module that #includes this file
17 * without placing your module under the GPL. Please consult a lawyer for
18 * advice before doing this.
22 #ifndef __LINUX_SECURITY_H
23 #define __LINUX_SECURITY_H
26 #include <linux/binfmts.h>
27 #include <linux/signal.h>
28 #include <linux/resource.h>
29 #include <linux/sem.h>
30 #include <linux/shm.h>
31 #include <linux/mm.h> /* PAGE_ALIGN */
32 #include <linux/msg.h>
33 #include <linux/sched.h>
34 #include <linux/key.h>
35 #include <linux/xfrm.h>
36 #include <linux/gfp.h>
39 /* Maximum number of letters for an LSM name string */
40 #define SECURITY_NAME_MAX 10
42 /* If capable should audit the security request */
43 #define SECURITY_CAP_NOAUDIT 0
44 #define SECURITY_CAP_AUDIT 1
50 * These functions are in security/capability.c and are used
51 * as the default capabilities functions
53 extern int cap_capable(struct task_struct
*tsk
, const struct cred
*cred
,
55 extern int cap_settime(struct timespec
*ts
, struct timezone
*tz
);
56 extern int cap_ptrace_access_check(struct task_struct
*child
, unsigned int mode
);
57 extern int cap_ptrace_traceme(struct task_struct
*parent
);
58 extern int cap_capget(struct task_struct
*target
, kernel_cap_t
*effective
, kernel_cap_t
*inheritable
, kernel_cap_t
*permitted
);
59 extern int cap_capset(struct cred
*new, const struct cred
*old
,
60 const kernel_cap_t
*effective
,
61 const kernel_cap_t
*inheritable
,
62 const kernel_cap_t
*permitted
);
63 extern int cap_bprm_set_creds(struct linux_binprm
*bprm
);
64 extern int cap_bprm_secureexec(struct linux_binprm
*bprm
);
65 extern int cap_inode_setxattr(struct dentry
*dentry
, const char *name
,
66 const void *value
, size_t size
, int flags
);
67 extern int cap_inode_removexattr(struct dentry
*dentry
, const char *name
);
68 extern int cap_inode_need_killpriv(struct dentry
*dentry
);
69 extern int cap_inode_killpriv(struct dentry
*dentry
);
70 extern int cap_file_mmap(struct file
*file
, unsigned long reqprot
,
71 unsigned long prot
, unsigned long flags
,
72 unsigned long addr
, unsigned long addr_only
);
73 extern int cap_task_fix_setuid(struct cred
*new, const struct cred
*old
, int flags
);
74 extern int cap_task_prctl(int option
, unsigned long arg2
, unsigned long arg3
,
75 unsigned long arg4
, unsigned long arg5
);
76 extern int cap_task_setscheduler(struct task_struct
*p
, int policy
, struct sched_param
*lp
);
77 extern int cap_task_setioprio(struct task_struct
*p
, int ioprio
);
78 extern int cap_task_setnice(struct task_struct
*p
, int nice
);
79 extern int cap_syslog(int type
);
80 extern int cap_vm_enough_memory(struct mm_struct
*mm
, long pages
);
92 struct xfrm_user_sec_ctx
;
95 extern int cap_netlink_send(struct sock
*sk
, struct sk_buff
*skb
);
96 extern int cap_netlink_recv(struct sk_buff
*skb
, int cap
);
98 extern unsigned long mmap_min_addr
;
99 extern unsigned long dac_mmap_min_addr
;
101 * Values used in the task_security_ops calls
103 /* setuid or setgid, id0 == uid or gid */
104 #define LSM_SETID_ID 1
106 /* setreuid or setregid, id0 == real, id1 == eff */
107 #define LSM_SETID_RE 2
109 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
110 #define LSM_SETID_RES 4
112 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
113 #define LSM_SETID_FS 8
115 /* forward declares to avoid warnings */
119 /* bprm->unsafe reasons */
120 #define LSM_UNSAFE_SHARE 1
121 #define LSM_UNSAFE_PTRACE 2
122 #define LSM_UNSAFE_PTRACE_CAP 4
125 * If a hint addr is less than mmap_min_addr change hint to be as
126 * low as possible but still greater than mmap_min_addr
128 static inline unsigned long round_hint_to_min(unsigned long hint
)
131 if (((void *)hint
!= NULL
) &&
132 (hint
< mmap_min_addr
))
133 return PAGE_ALIGN(mmap_min_addr
);
136 extern int mmap_min_addr_handler(struct ctl_table
*table
, int write
, struct file
*filp
,
137 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
);
139 #ifdef CONFIG_SECURITY
141 struct security_mnt_opts
{
147 static inline void security_init_mnt_opts(struct security_mnt_opts
*opts
)
149 opts
->mnt_opts
= NULL
;
150 opts
->mnt_opts_flags
= NULL
;
151 opts
->num_mnt_opts
= 0;
154 static inline void security_free_mnt_opts(struct security_mnt_opts
*opts
)
158 for (i
= 0; i
< opts
->num_mnt_opts
; i
++)
159 kfree(opts
->mnt_opts
[i
]);
160 kfree(opts
->mnt_opts
);
161 opts
->mnt_opts
= NULL
;
162 kfree(opts
->mnt_opts_flags
);
163 opts
->mnt_opts_flags
= NULL
;
164 opts
->num_mnt_opts
= 0;
168 * struct security_operations - main security structure
170 * Security module identifier.
173 * A string that acts as a unique identifeir for the LSM with max number
174 * of characters = SECURITY_NAME_MAX.
176 * Security hooks for program execution operations.
179 * Save security information in the bprm->security field, typically based
180 * on information about the bprm->file, for later use by the apply_creds
181 * hook. This hook may also optionally check permissions (e.g. for
182 * transitions between security domains).
183 * This hook may be called multiple times during a single execve, e.g. for
184 * interpreters. The hook can tell whether it has already been called by
185 * checking to see if @bprm->security is non-NULL. If so, then the hook
186 * may decide either to retain the security information saved earlier or
188 * @bprm contains the linux_binprm structure.
189 * Return 0 if the hook is successful and permission is granted.
190 * @bprm_check_security:
191 * This hook mediates the point when a search for a binary handler will
192 * begin. It allows a check the @bprm->security value which is set in the
193 * preceding set_creds call. The primary difference from set_creds is
194 * that the argv list and envp list are reliably available in @bprm. This
195 * hook may be called multiple times during a single execve; and in each
196 * pass set_creds is called first.
197 * @bprm contains the linux_binprm structure.
198 * Return 0 if the hook is successful and permission is granted.
199 * @bprm_committing_creds:
200 * Prepare to install the new security attributes of a process being
201 * transformed by an execve operation, based on the old credentials
202 * pointed to by @current->cred and the information set in @bprm->cred by
203 * the bprm_set_creds hook. @bprm points to the linux_binprm structure.
204 * This hook is a good place to perform state changes on the process such
205 * as closing open file descriptors to which access will no longer be
206 * granted when the attributes are changed. This is called immediately
207 * before commit_creds().
208 * @bprm_committed_creds:
209 * Tidy up after the installation of the new security attributes of a
210 * process being transformed by an execve operation. The new credentials
211 * have, by this point, been set to @current->cred. @bprm points to the
212 * linux_binprm structure. This hook is a good place to perform state
213 * changes on the process such as clearing out non-inheritable signal
214 * state. This is called immediately after commit_creds().
216 * Return a boolean value (0 or 1) indicating whether a "secure exec"
217 * is required. The flag is passed in the auxiliary table
218 * on the initial stack to the ELF interpreter to indicate whether libc
219 * should enable secure mode.
220 * @bprm contains the linux_binprm structure.
222 * Security hooks for filesystem operations.
224 * @sb_alloc_security:
225 * Allocate and attach a security structure to the sb->s_security field.
226 * The s_security field is initialized to NULL when the structure is
228 * @sb contains the super_block structure to be modified.
229 * Return 0 if operation was successful.
231 * Deallocate and clear the sb->s_security field.
232 * @sb contains the super_block structure to be modified.
234 * Check permission before obtaining filesystem statistics for the @mnt
236 * @dentry is a handle on the superblock for the filesystem.
237 * Return 0 if permission is granted.
239 * Check permission before an object specified by @dev_name is mounted on
240 * the mount point named by @nd. For an ordinary mount, @dev_name
241 * identifies a device if the file system type requires a device. For a
242 * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a
243 * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
244 * pathname of the object being mounted.
245 * @dev_name contains the name for object being mounted.
246 * @path contains the path for mount point object.
247 * @type contains the filesystem type.
248 * @flags contains the mount flags.
249 * @data contains the filesystem-specific data.
250 * Return 0 if permission is granted.
252 * Allow mount option data to be copied prior to parsing by the filesystem,
253 * so that the security module can extract security-specific mount
254 * options cleanly (a filesystem may modify the data e.g. with strsep()).
255 * This also allows the original mount data to be stripped of security-
256 * specific options to avoid having to make filesystems aware of them.
257 * @type the type of filesystem being mounted.
258 * @orig the original mount data copied from userspace.
259 * @copy copied data which will be passed to the security module.
260 * Returns 0 if the copy was successful.
262 * Check permission before the device with superblock @mnt->sb is mounted
263 * on the mount point named by @nd.
264 * @mnt contains the vfsmount for device being mounted.
265 * @path contains the path for the mount point.
266 * Return 0 if permission is granted.
268 * Check permission before the @mnt file system is unmounted.
269 * @mnt contains the mounted file system.
270 * @flags contains the unmount flags, e.g. MNT_FORCE.
271 * Return 0 if permission is granted.
273 * Close any files in the @mnt mounted filesystem that are held open by
274 * the security module. This hook is called during an umount operation
275 * prior to checking whether the filesystem is still busy.
276 * @mnt contains the mounted filesystem.
278 * Handle a failed umount of the @mnt mounted filesystem, e.g. re-opening
279 * any files that were closed by umount_close. This hook is called during
280 * an umount operation if the umount fails after a call to the
282 * @mnt contains the mounted filesystem.
284 * Update the security module's state when a filesystem is remounted.
285 * This hook is only called if the remount was successful.
286 * @mnt contains the mounted file system.
287 * @flags contains the new filesystem flags.
288 * @data contains the filesystem-specific data.
290 * Update the security module's state when a filesystem is mounted.
291 * This hook is called any time a mount is successfully grafetd to
293 * @mnt contains the mounted filesystem.
294 * @mountpoint contains the path for the mount point.
296 * Check permission before pivoting the root filesystem.
297 * @old_path contains the path for the new location of the current root (put_old).
298 * @new_path contains the path for the new root (new_root).
299 * Return 0 if permission is granted.
300 * @sb_post_pivotroot:
301 * Update module state after a successful pivot.
302 * @old_path contains the path for the old root.
303 * @new_path contains the path for the new root.
305 * Set the security relevant mount options used for a superblock
306 * @sb the superblock to set security mount options for
307 * @opts binary data structure containing all lsm mount data
308 * @sb_clone_mnt_opts:
309 * Copy all security options from a given superblock to another
310 * @oldsb old superblock which contain information to clone
311 * @newsb new superblock which needs filled in
312 * @sb_parse_opts_str:
313 * Parse a string of security data filling in the opts structure
314 * @options string containing all mount options known by the LSM
315 * @opts binary data structure usable by the LSM
317 * Security hooks for inode operations.
319 * @inode_alloc_security:
320 * Allocate and attach a security structure to @inode->i_security. The
321 * i_security field is initialized to NULL when the inode structure is
323 * @inode contains the inode structure.
324 * Return 0 if operation was successful.
325 * @inode_free_security:
326 * @inode contains the inode structure.
327 * Deallocate the inode security structure and set @inode->i_security to
329 * @inode_init_security:
330 * Obtain the security attribute name suffix and value to set on a newly
331 * created inode and set up the incore security field for the new inode.
332 * This hook is called by the fs code as part of the inode creation
333 * transaction and provides for atomic labeling of the inode, unlike
334 * the post_create/mkdir/... hooks called by the VFS. The hook function
335 * is expected to allocate the name and value via kmalloc, with the caller
336 * being responsible for calling kfree after using them.
337 * If the security module does not use security attributes or does
338 * not wish to put a security attribute on this particular inode,
339 * then it should return -EOPNOTSUPP to skip this processing.
340 * @inode contains the inode structure of the newly created inode.
341 * @dir contains the inode structure of the parent directory.
342 * @name will be set to the allocated name suffix (e.g. selinux).
343 * @value will be set to the allocated attribute value.
344 * @len will be set to the length of the value.
345 * Returns 0 if @name and @value have been successfully set,
346 * -EOPNOTSUPP if no security attribute is needed, or
347 * -ENOMEM on memory allocation failure.
349 * Check permission to create a regular file.
350 * @dir contains inode structure of the parent of the new file.
351 * @dentry contains the dentry structure for the file to be created.
352 * @mode contains the file mode of the file to be created.
353 * Return 0 if permission is granted.
355 * Check permission before creating a new hard link to a file.
356 * @old_dentry contains the dentry structure for an existing link to the file.
357 * @dir contains the inode structure of the parent directory of the new link.
358 * @new_dentry contains the dentry structure for the new link.
359 * Return 0 if permission is granted.
361 * Check permission before creating a new hard link to a file.
362 * @old_dentry contains the dentry structure for an existing link
364 * @new_dir contains the path structure of the parent directory of
366 * @new_dentry contains the dentry structure for the new link.
367 * Return 0 if permission is granted.
369 * Check the permission to remove a hard link to a file.
370 * @dir contains the inode structure of parent directory of the file.
371 * @dentry contains the dentry structure for file to be unlinked.
372 * Return 0 if permission is granted.
374 * Check the permission to remove a hard link to a file.
375 * @dir contains the path structure of parent directory of the file.
376 * @dentry contains the dentry structure for file to be unlinked.
377 * Return 0 if permission is granted.
379 * Check the permission to create a symbolic link to a file.
380 * @dir contains the inode structure of parent directory of the symbolic link.
381 * @dentry contains the dentry structure of the symbolic link.
382 * @old_name contains the pathname of file.
383 * Return 0 if permission is granted.
385 * Check the permission to create a symbolic link to a file.
386 * @dir contains the path structure of parent directory of
388 * @dentry contains the dentry structure of the symbolic link.
389 * @old_name contains the pathname of file.
390 * Return 0 if permission is granted.
392 * Check permissions to create a new directory in the existing directory
393 * associated with inode strcture @dir.
394 * @dir containst the inode structure of parent of the directory to be created.
395 * @dentry contains the dentry structure of new directory.
396 * @mode contains the mode of new directory.
397 * Return 0 if permission is granted.
399 * Check permissions to create a new directory in the existing directory
400 * associated with path strcture @path.
401 * @dir containst the path structure of parent of the directory
403 * @dentry contains the dentry structure of new directory.
404 * @mode contains the mode of new directory.
405 * Return 0 if permission is granted.
407 * Check the permission to remove a directory.
408 * @dir contains the inode structure of parent of the directory to be removed.
409 * @dentry contains the dentry structure of directory to be removed.
410 * Return 0 if permission is granted.
412 * Check the permission to remove a directory.
413 * @dir contains the path structure of parent of the directory to be
415 * @dentry contains the dentry structure of directory to be removed.
416 * Return 0 if permission is granted.
418 * Check permissions when creating a special file (or a socket or a fifo
419 * file created via the mknod system call). Note that if mknod operation
420 * is being done for a regular file, then the create hook will be called
422 * @dir contains the inode structure of parent of the new file.
423 * @dentry contains the dentry structure of the new file.
424 * @mode contains the mode of the new file.
425 * @dev contains the device number.
426 * Return 0 if permission is granted.
428 * Check permissions when creating a file. Note that this hook is called
429 * even if mknod operation is being done for a regular file.
430 * @dir contains the path structure of parent of the new file.
431 * @dentry contains the dentry structure of the new file.
432 * @mode contains the mode of the new file.
433 * @dev contains the undecoded device number. Use new_decode_dev() to get
434 * the decoded device number.
435 * Return 0 if permission is granted.
437 * Check for permission to rename a file or directory.
438 * @old_dir contains the inode structure for parent of the old link.
439 * @old_dentry contains the dentry structure of the old link.
440 * @new_dir contains the inode structure for parent of the new link.
441 * @new_dentry contains the dentry structure of the new link.
442 * Return 0 if permission is granted.
444 * Check for permission to rename a file or directory.
445 * @old_dir contains the path structure for parent of the old link.
446 * @old_dentry contains the dentry structure of the old link.
447 * @new_dir contains the path structure for parent of the new link.
448 * @new_dentry contains the dentry structure of the new link.
449 * Return 0 if permission is granted.
451 * Check the permission to read the symbolic link.
452 * @dentry contains the dentry structure for the file link.
453 * Return 0 if permission is granted.
454 * @inode_follow_link:
455 * Check permission to follow a symbolic link when looking up a pathname.
456 * @dentry contains the dentry structure for the link.
457 * @nd contains the nameidata structure for the parent directory.
458 * Return 0 if permission is granted.
460 * Check permission before accessing an inode. This hook is called by the
461 * existing Linux permission function, so a security module can use it to
462 * provide additional checking for existing Linux permission checks.
463 * Notice that this hook is called when a file is opened (as well as many
464 * other operations), whereas the file_security_ops permission hook is
465 * called when the actual read/write operations are performed.
466 * @inode contains the inode structure to check.
467 * @mask contains the permission mask.
468 * @nd contains the nameidata (may be NULL).
469 * Return 0 if permission is granted.
471 * Check permission before setting file attributes. Note that the kernel
472 * call to notify_change is performed from several locations, whenever
473 * file attributes change (such as when a file is truncated, chown/chmod
474 * operations, transferring disk quotas, etc).
475 * @dentry contains the dentry structure for the file.
476 * @attr is the iattr structure containing the new file attributes.
477 * Return 0 if permission is granted.
479 * Check permission before truncating a file.
480 * @path contains the path structure for the file.
481 * @length is the new length of the file.
482 * @time_attrs is the flags passed to do_truncate().
483 * Return 0 if permission is granted.
485 * Check permission before obtaining file attributes.
486 * @mnt is the vfsmount where the dentry was looked up
487 * @dentry contains the dentry structure for the file.
488 * Return 0 if permission is granted.
490 * @inode contains the inode structure for deleted inode.
491 * This hook is called when a deleted inode is released (i.e. an inode
492 * with no hard links has its use count drop to zero). A security module
493 * can use this hook to release any persistent label associated with the
496 * Check permission before setting the extended attributes
497 * @value identified by @name for @dentry.
498 * Return 0 if permission is granted.
499 * @inode_post_setxattr:
500 * Update inode security field after successful setxattr operation.
501 * @value identified by @name for @dentry.
503 * Check permission before obtaining the extended attributes
504 * identified by @name for @dentry.
505 * Return 0 if permission is granted.
507 * Check permission before obtaining the list of extended attribute
509 * Return 0 if permission is granted.
510 * @inode_removexattr:
511 * Check permission before removing the extended attribute
512 * identified by @name for @dentry.
513 * Return 0 if permission is granted.
514 * @inode_getsecurity:
515 * Retrieve a copy of the extended attribute representation of the
516 * security label associated with @name for @inode via @buffer. Note that
517 * @name is the remainder of the attribute name after the security prefix
518 * has been removed. @alloc is used to specify of the call should return a
519 * value via the buffer or just the value length Return size of buffer on
521 * @inode_setsecurity:
522 * Set the security label associated with @name for @inode from the
523 * extended attribute value @value. @size indicates the size of the
524 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
525 * Note that @name is the remainder of the attribute name after the
526 * security. prefix has been removed.
527 * Return 0 on success.
528 * @inode_listsecurity:
529 * Copy the extended attribute names for the security labels
530 * associated with @inode into @buffer. The maximum size of @buffer
531 * is specified by @buffer_size. @buffer may be NULL to request
532 * the size of the buffer required.
533 * Returns number of bytes used/required on success.
534 * @inode_need_killpriv:
535 * Called when an inode has been changed.
536 * @dentry is the dentry being changed.
537 * Return <0 on error to abort the inode change operation.
538 * Return 0 if inode_killpriv does not need to be called.
539 * Return >0 if inode_killpriv does need to be called.
541 * The setuid bit is being removed. Remove similar security labels.
542 * Called with the dentry->d_inode->i_mutex held.
543 * @dentry is the dentry being changed.
544 * Return 0 on success. If error is returned, then the operation
545 * causing setuid bit removal is failed.
547 * Get the secid associated with the node.
548 * @inode contains a pointer to the inode.
549 * @secid contains a pointer to the location where result will be saved.
550 * In case of failure, @secid will be set to zero.
552 * Security hooks for file operations
555 * Check file permissions before accessing an open file. This hook is
556 * called by various operations that read or write files. A security
557 * module can use this hook to perform additional checking on these
558 * operations, e.g. to revalidate permissions on use to support privilege
559 * bracketing or policy changes. Notice that this hook is used when the
560 * actual read/write operations are performed, whereas the
561 * inode_security_ops hook is called when a file is opened (as well as
562 * many other operations).
563 * Caveat: Although this hook can be used to revalidate permissions for
564 * various system call operations that read or write files, it does not
565 * address the revalidation of permissions for memory-mapped files.
566 * Security modules must handle this separately if they need such
568 * @file contains the file structure being accessed.
569 * @mask contains the requested permissions.
570 * Return 0 if permission is granted.
571 * @file_alloc_security:
572 * Allocate and attach a security structure to the file->f_security field.
573 * The security field is initialized to NULL when the structure is first
575 * @file contains the file structure to secure.
576 * Return 0 if the hook is successful and permission is granted.
577 * @file_free_security:
578 * Deallocate and free any security structures stored in file->f_security.
579 * @file contains the file structure being modified.
581 * @file contains the file structure.
582 * @cmd contains the operation to perform.
583 * @arg contains the operational arguments.
584 * Check permission for an ioctl operation on @file. Note that @arg can
585 * sometimes represents a user space pointer; in other cases, it may be a
586 * simple integer value. When @arg represents a user space pointer, it
587 * should never be used by the security module.
588 * Return 0 if permission is granted.
590 * Check permissions for a mmap operation. The @file may be NULL, e.g.
591 * if mapping anonymous memory.
592 * @file contains the file structure for file to map (may be NULL).
593 * @reqprot contains the protection requested by the application.
594 * @prot contains the protection that will be applied by the kernel.
595 * @flags contains the operational flags.
596 * Return 0 if permission is granted.
598 * Check permissions before changing memory access permissions.
599 * @vma contains the memory region to modify.
600 * @reqprot contains the protection requested by the application.
601 * @prot contains the protection that will be applied by the kernel.
602 * Return 0 if permission is granted.
604 * Check permission before performing file locking operations.
605 * Note: this hook mediates both flock and fcntl style locks.
606 * @file contains the file structure.
607 * @cmd contains the posix-translated lock operation to perform
608 * (e.g. F_RDLCK, F_WRLCK).
609 * Return 0 if permission is granted.
611 * Check permission before allowing the file operation specified by @cmd
612 * from being performed on the file @file. Note that @arg can sometimes
613 * represents a user space pointer; in other cases, it may be a simple
614 * integer value. When @arg represents a user space pointer, it should
615 * never be used by the security module.
616 * @file contains the file structure.
617 * @cmd contains the operation to be performed.
618 * @arg contains the operational arguments.
619 * Return 0 if permission is granted.
621 * Save owner security information (typically from current->security) in
622 * file->f_security for later use by the send_sigiotask hook.
623 * @file contains the file structure to update.
624 * Return 0 on success.
625 * @file_send_sigiotask:
626 * Check permission for the file owner @fown to send SIGIO or SIGURG to the
627 * process @tsk. Note that this hook is sometimes called from interrupt.
628 * Note that the fown_struct, @fown, is never outside the context of a
629 * struct file, so the file structure (and associated security information)
630 * can always be obtained:
631 * container_of(fown, struct file, f_owner)
632 * @tsk contains the structure of task receiving signal.
633 * @fown contains the file owner information.
634 * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
635 * Return 0 if permission is granted.
637 * This hook allows security modules to control the ability of a process
638 * to receive an open file descriptor via socket IPC.
639 * @file contains the file structure being received.
640 * Return 0 if permission is granted.
642 * Security hook for dentry
645 * Save open-time permission checking state for later use upon
646 * file_permission, and recheck access if anything has changed
647 * since inode_permission.
649 * Security hooks for task operations.
652 * Check permission before creating a child process. See the clone(2)
653 * manual page for definitions of the @clone_flags.
654 * @clone_flags contains the flags indicating what should be shared.
655 * Return 0 if permission is granted.
657 * @cred points to the credentials.
658 * @gfp indicates the atomicity of any memory allocations.
659 * Only allocate sufficient memory and attach to @cred such that
660 * cred_transfer() will not get ENOMEM.
662 * @cred points to the credentials.
663 * Deallocate and clear the cred->security field in a set of credentials.
665 * @new points to the new credentials.
666 * @old points to the original credentials.
667 * @gfp indicates the atomicity of any memory allocations.
668 * Prepare a new set of credentials by copying the data from the old set.
670 * @new points to the new credentials.
671 * @old points to the original credentials.
672 * Install a new set of credentials.
674 * @new points to the new credentials.
675 * @old points to the original credentials.
676 * Transfer data from original creds to new creds
678 * Set the credentials for a kernel service to act as (subjective context).
679 * @new points to the credentials to be modified.
680 * @secid specifies the security ID to be set
681 * The current task must be the one that nominated @secid.
682 * Return 0 if successful.
683 * @kernel_create_files_as:
684 * Set the file creation context in a set of credentials to be the same as
685 * the objective context of the specified inode.
686 * @new points to the credentials to be modified.
687 * @inode points to the inode to use as a reference.
688 * The current task must be the one that nominated @inode.
689 * Return 0 if successful.
690 * @kernel_module_request:
691 * Ability to trigger the kernel to automatically upcall to userspace for
692 * userspace to load a kernel module with the given name.
693 * Return 0 if successful.
695 * Check permission before setting one or more of the user identity
696 * attributes of the current process. The @flags parameter indicates
697 * which of the set*uid system calls invoked this hook and how to
698 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
699 * definitions at the beginning of this file for the @flags values and
701 * @id0 contains a uid.
702 * @id1 contains a uid.
703 * @id2 contains a uid.
704 * @flags contains one of the LSM_SETID_* values.
705 * Return 0 if permission is granted.
707 * Update the module's state after setting one or more of the user
708 * identity attributes of the current process. The @flags parameter
709 * indicates which of the set*uid system calls invoked this hook. If
710 * @new is the set of credentials that will be installed. Modifications
711 * should be made to this rather than to @current->cred.
712 * @old is the set of credentials that are being replaces
713 * @flags contains one of the LSM_SETID_* values.
714 * Return 0 on success.
716 * Check permission before setting one or more of the group identity
717 * attributes of the current process. The @flags parameter indicates
718 * which of the set*gid system calls invoked this hook and how to
719 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
720 * definitions at the beginning of this file for the @flags values and
722 * @id0 contains a gid.
723 * @id1 contains a gid.
724 * @id2 contains a gid.
725 * @flags contains one of the LSM_SETID_* values.
726 * Return 0 if permission is granted.
728 * Check permission before setting the process group identifier of the
729 * process @p to @pgid.
730 * @p contains the task_struct for process being modified.
731 * @pgid contains the new pgid.
732 * Return 0 if permission is granted.
734 * Check permission before getting the process group identifier of the
736 * @p contains the task_struct for the process.
737 * Return 0 if permission is granted.
739 * Check permission before getting the session identifier of the process
741 * @p contains the task_struct for the process.
742 * Return 0 if permission is granted.
744 * Retrieve the security identifier of the process @p.
745 * @p contains the task_struct for the process and place is into @secid.
746 * In case of failure, @secid will be set to zero.
749 * Check permission before setting the supplementary group set of the
751 * @group_info contains the new group information.
752 * Return 0 if permission is granted.
754 * Check permission before setting the nice value of @p to @nice.
755 * @p contains the task_struct of process.
756 * @nice contains the new nice value.
757 * Return 0 if permission is granted.
759 * Check permission before setting the ioprio value of @p to @ioprio.
760 * @p contains the task_struct of process.
761 * @ioprio contains the new ioprio value
762 * Return 0 if permission is granted.
764 * Check permission before getting the ioprio value of @p.
765 * @p contains the task_struct of process.
766 * Return 0 if permission is granted.
768 * Check permission before setting the resource limits of the current
769 * process for @resource to @new_rlim. The old resource limit values can
770 * be examined by dereferencing (current->signal->rlim + resource).
771 * @resource contains the resource whose limit is being set.
772 * @new_rlim contains the new limits for @resource.
773 * Return 0 if permission is granted.
774 * @task_setscheduler:
775 * Check permission before setting scheduling policy and/or parameters of
776 * process @p based on @policy and @lp.
777 * @p contains the task_struct for process.
778 * @policy contains the scheduling policy.
779 * @lp contains the scheduling parameters.
780 * Return 0 if permission is granted.
781 * @task_getscheduler:
782 * Check permission before obtaining scheduling information for process
784 * @p contains the task_struct for process.
785 * Return 0 if permission is granted.
787 * Check permission before moving memory owned by process @p.
788 * @p contains the task_struct for process.
789 * Return 0 if permission is granted.
791 * Check permission before sending signal @sig to @p. @info can be NULL,
792 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
793 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
794 * from the kernel and should typically be permitted.
795 * SIGIO signals are handled separately by the send_sigiotask hook in
797 * @p contains the task_struct for process.
798 * @info contains the signal information.
799 * @sig contains the signal value.
800 * @secid contains the sid of the process where the signal originated
801 * Return 0 if permission is granted.
803 * Check permission before allowing a process to reap a child process @p
804 * and collect its status information.
805 * @p contains the task_struct for process.
806 * Return 0 if permission is granted.
808 * Check permission before performing a process control operation on the
810 * @option contains the operation.
811 * @arg2 contains a argument.
812 * @arg3 contains a argument.
813 * @arg4 contains a argument.
814 * @arg5 contains a argument.
815 * Return -ENOSYS if no-one wanted to handle this op, any other value to
816 * cause prctl() to return immediately with that value.
818 * Set the security attributes for an inode based on an associated task's
819 * security attributes, e.g. for /proc/pid inodes.
820 * @p contains the task_struct for the task.
821 * @inode contains the inode structure for the inode.
823 * Security hooks for Netlink messaging.
826 * Save security information for a netlink message so that permission
827 * checking can be performed when the message is processed. The security
828 * information can be saved using the eff_cap field of the
829 * netlink_skb_parms structure. Also may be used to provide fine
830 * grained control over message transmission.
831 * @sk associated sock of task sending the message.,
832 * @skb contains the sk_buff structure for the netlink message.
833 * Return 0 if the information was successfully saved and message
834 * is allowed to be transmitted.
836 * Check permission before processing the received netlink message in
838 * @skb contains the sk_buff structure for the netlink message.
839 * @cap indicates the capability required
840 * Return 0 if permission is granted.
842 * Security hooks for Unix domain networking.
844 * @unix_stream_connect:
845 * Check permissions before establishing a Unix domain stream connection
846 * between @sock and @other.
847 * @sock contains the socket structure.
848 * @other contains the peer socket structure.
849 * Return 0 if permission is granted.
851 * Check permissions before connecting or sending datagrams from @sock to
853 * @sock contains the socket structure.
854 * @sock contains the peer socket structure.
855 * Return 0 if permission is granted.
857 * The @unix_stream_connect and @unix_may_send hooks were necessary because
858 * Linux provides an alternative to the conventional file name space for Unix
859 * domain sockets. Whereas binding and connecting to sockets in the file name
860 * space is mediated by the typical file permissions (and caught by the mknod
861 * and permission hooks in inode_security_ops), binding and connecting to
862 * sockets in the abstract name space is completely unmediated. Sufficient
863 * control of Unix domain sockets in the abstract name space isn't possible
864 * using only the socket layer hooks, since we need to know the actual target
865 * socket, which is not looked up until we are inside the af_unix code.
867 * Security hooks for socket operations.
870 * Check permissions prior to creating a new socket.
871 * @family contains the requested protocol family.
872 * @type contains the requested communications type.
873 * @protocol contains the requested protocol.
874 * @kern set to 1 if a kernel socket.
875 * Return 0 if permission is granted.
876 * @socket_post_create:
877 * This hook allows a module to update or allocate a per-socket security
878 * structure. Note that the security field was not added directly to the
879 * socket structure, but rather, the socket security information is stored
880 * in the associated inode. Typically, the inode alloc_security hook will
881 * allocate and and attach security information to
882 * sock->inode->i_security. This hook may be used to update the
883 * sock->inode->i_security field with additional information that wasn't
884 * available when the inode was allocated.
885 * @sock contains the newly created socket structure.
886 * @family contains the requested protocol family.
887 * @type contains the requested communications type.
888 * @protocol contains the requested protocol.
889 * @kern set to 1 if a kernel socket.
891 * Check permission before socket protocol layer bind operation is
892 * performed and the socket @sock is bound to the address specified in the
893 * @address parameter.
894 * @sock contains the socket structure.
895 * @address contains the address to bind to.
896 * @addrlen contains the length of address.
897 * Return 0 if permission is granted.
899 * Check permission before socket protocol layer connect operation
900 * attempts to connect socket @sock to a remote address, @address.
901 * @sock contains the socket structure.
902 * @address contains the address of remote endpoint.
903 * @addrlen contains the length of address.
904 * Return 0 if permission is granted.
906 * Check permission before socket protocol layer listen operation.
907 * @sock contains the socket structure.
908 * @backlog contains the maximum length for the pending connection queue.
909 * Return 0 if permission is granted.
911 * Check permission before accepting a new connection. Note that the new
912 * socket, @newsock, has been created and some information copied to it,
913 * but the accept operation has not actually been performed.
914 * @sock contains the listening socket structure.
915 * @newsock contains the newly created server socket for connection.
916 * Return 0 if permission is granted.
918 * Check permission before transmitting a message to another socket.
919 * @sock contains the socket structure.
920 * @msg contains the message to be transmitted.
921 * @size contains the size of message.
922 * Return 0 if permission is granted.
924 * Check permission before receiving a message from a socket.
925 * @sock contains the socket structure.
926 * @msg contains the message structure.
927 * @size contains the size of message structure.
928 * @flags contains the operational flags.
929 * Return 0 if permission is granted.
930 * @socket_getsockname:
931 * Check permission before the local address (name) of the socket object
932 * @sock is retrieved.
933 * @sock contains the socket structure.
934 * Return 0 if permission is granted.
935 * @socket_getpeername:
936 * Check permission before the remote address (name) of a socket object
937 * @sock is retrieved.
938 * @sock contains the socket structure.
939 * Return 0 if permission is granted.
940 * @socket_getsockopt:
941 * Check permissions before retrieving the options associated with socket
943 * @sock contains the socket structure.
944 * @level contains the protocol level to retrieve option from.
945 * @optname contains the name of option to retrieve.
946 * Return 0 if permission is granted.
947 * @socket_setsockopt:
948 * Check permissions before setting the options associated with socket
950 * @sock contains the socket structure.
951 * @level contains the protocol level to set options for.
952 * @optname contains the name of the option to set.
953 * Return 0 if permission is granted.
955 * Checks permission before all or part of a connection on the socket
956 * @sock is shut down.
957 * @sock contains the socket structure.
958 * @how contains the flag indicating how future sends and receives are handled.
959 * Return 0 if permission is granted.
960 * @socket_sock_rcv_skb:
961 * Check permissions on incoming network packets. This hook is distinct
962 * from Netfilter's IP input hooks since it is the first time that the
963 * incoming sk_buff @skb has been associated with a particular socket, @sk.
964 * @sk contains the sock (not socket) associated with the incoming sk_buff.
965 * @skb contains the incoming network data.
966 * @socket_getpeersec_stream:
967 * This hook allows the security module to provide peer socket security
968 * state for unix or connected tcp sockets to userspace via getsockopt
969 * SO_GETPEERSEC. For tcp sockets this can be meaningful if the
970 * socket is associated with an ipsec SA.
971 * @sock is the local socket.
972 * @optval userspace memory where the security state is to be copied.
973 * @optlen userspace int where the module should copy the actual length
974 * of the security state.
975 * @len as input is the maximum length to copy to userspace provided
977 * Return 0 if all is well, otherwise, typical getsockopt return
979 * @socket_getpeersec_dgram:
980 * This hook allows the security module to provide peer socket security
981 * state for udp sockets on a per-packet basis to userspace via
982 * getsockopt SO_GETPEERSEC. The application must first have indicated
983 * the IP_PASSSEC option via getsockopt. It can then retrieve the
984 * security state returned by this hook for a packet via the SCM_SECURITY
985 * ancillary message type.
986 * @skb is the skbuff for the packet being queried
987 * @secdata is a pointer to a buffer in which to copy the security data
988 * @seclen is the maximum length for @secdata
989 * Return 0 on success, error on failure.
990 * @sk_alloc_security:
991 * Allocate and attach a security structure to the sk->sk_security field,
992 * which is used to copy security attributes between local stream sockets.
994 * Deallocate security structure.
995 * @sk_clone_security:
996 * Clone/copy security structure.
998 * Retrieve the LSM-specific secid for the sock to enable caching of network
1001 * Sets the socket's isec sid to the sock's sid.
1002 * @inet_conn_request:
1003 * Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
1005 * Sets the new child socket's sid to the openreq sid.
1006 * @inet_conn_established:
1007 * Sets the connection's peersid to the secmark on skb.
1008 * @req_classify_flow:
1009 * Sets the flow's sid to the openreq sid.
1011 * Check permissions prior to creating a new TUN device.
1012 * @tun_dev_post_create:
1013 * This hook allows a module to update or allocate a per-socket security
1015 * @sk contains the newly created sock structure.
1017 * Check permissions prior to attaching to a persistent TUN device. This
1018 * hook can also be used by the module to update any security state
1019 * associated with the TUN device's sock structure.
1020 * @sk contains the existing sock structure.
1022 * Security hooks for XFRM operations.
1024 * @xfrm_policy_alloc_security:
1025 * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
1026 * Database used by the XFRM system.
1027 * @sec_ctx contains the security context information being provided by
1028 * the user-level policy update program (e.g., setkey).
1029 * Allocate a security structure to the xp->security field; the security
1030 * field is initialized to NULL when the xfrm_policy is allocated.
1031 * Return 0 if operation was successful (memory to allocate, legal context)
1032 * @xfrm_policy_clone_security:
1033 * @old_ctx contains an existing xfrm_sec_ctx.
1034 * @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
1035 * Allocate a security structure in new_ctxp that contains the
1036 * information from the old_ctx structure.
1037 * Return 0 if operation was successful (memory to allocate).
1038 * @xfrm_policy_free_security:
1039 * @ctx contains the xfrm_sec_ctx
1040 * Deallocate xp->security.
1041 * @xfrm_policy_delete_security:
1042 * @ctx contains the xfrm_sec_ctx.
1043 * Authorize deletion of xp->security.
1044 * @xfrm_state_alloc_security:
1045 * @x contains the xfrm_state being added to the Security Association
1046 * Database by the XFRM system.
1047 * @sec_ctx contains the security context information being provided by
1048 * the user-level SA generation program (e.g., setkey or racoon).
1049 * @secid contains the secid from which to take the mls portion of the context.
1050 * Allocate a security structure to the x->security field; the security
1051 * field is initialized to NULL when the xfrm_state is allocated. Set the
1052 * context to correspond to either sec_ctx or polsec, with the mls portion
1053 * taken from secid in the latter case.
1054 * Return 0 if operation was successful (memory to allocate, legal context).
1055 * @xfrm_state_free_security:
1056 * @x contains the xfrm_state.
1057 * Deallocate x->security.
1058 * @xfrm_state_delete_security:
1059 * @x contains the xfrm_state.
1060 * Authorize deletion of x->security.
1061 * @xfrm_policy_lookup:
1062 * @ctx contains the xfrm_sec_ctx for which the access control is being
1064 * @fl_secid contains the flow security label that is used to authorize
1065 * access to the policy xp.
1066 * @dir contains the direction of the flow (input or output).
1067 * Check permission when a flow selects a xfrm_policy for processing
1068 * XFRMs on a packet. The hook is called when selecting either a
1069 * per-socket policy or a generic xfrm policy.
1070 * Return 0 if permission is granted, -ESRCH otherwise, or -errno
1072 * @xfrm_state_pol_flow_match:
1073 * @x contains the state to match.
1074 * @xp contains the policy to check for a match.
1075 * @fl contains the flow to check for a match.
1076 * Return 1 if there is a match.
1077 * @xfrm_decode_session:
1078 * @skb points to skb to decode.
1079 * @secid points to the flow key secid to set.
1080 * @ckall says if all xfrms used should be checked for same secid.
1081 * Return 0 if ckall is zero or all xfrms used have the same secid.
1083 * Security hooks affecting all Key Management operations
1086 * Permit allocation of a key and assign security data. Note that key does
1087 * not have a serial number assigned at this point.
1088 * @key points to the key.
1089 * @flags is the allocation flags
1090 * Return 0 if permission is granted, -ve error otherwise.
1092 * Notification of destruction; free security data.
1093 * @key points to the key.
1096 * See whether a specific operational right is granted to a process on a
1098 * @key_ref refers to the key (key pointer + possession attribute bit).
1099 * @cred points to the credentials to provide the context against which to
1100 * evaluate the security data on the key.
1101 * @perm describes the combination of permissions required of this key.
1102 * Return 1 if permission granted, 0 if permission denied and -ve it the
1103 * normal permissions model should be effected.
1105 * Get a textual representation of the security context attached to a key
1106 * for the purposes of honouring KEYCTL_GETSECURITY. This function
1107 * allocates the storage for the NUL-terminated string and the caller
1109 * @key points to the key to be queried.
1110 * @_buffer points to a pointer that should be set to point to the
1111 * resulting string (if no label or an error occurs).
1112 * Return the length of the string (including terminating NUL) or -ve if
1114 * May also return 0 (and a NULL buffer pointer) if there is no label.
1115 * @key_session_to_parent:
1116 * Forcibly assign the session keyring from a process to its parent
1118 * @cred: Pointer to process's credentials
1119 * @parent_cred: Pointer to parent process's credentials
1120 * @keyring: Proposed new session keyring
1121 * Return 0 if permission is granted, -ve error otherwise.
1123 * Security hooks affecting all System V IPC operations.
1126 * Check permissions for access to IPC
1127 * @ipcp contains the kernel IPC permission structure
1128 * @flag contains the desired (requested) permission set
1129 * Return 0 if permission is granted.
1131 * Get the secid associated with the ipc object.
1132 * @ipcp contains the kernel IPC permission structure.
1133 * @secid contains a pointer to the location where result will be saved.
1134 * In case of failure, @secid will be set to zero.
1136 * Security hooks for individual messages held in System V IPC message queues
1137 * @msg_msg_alloc_security:
1138 * Allocate and attach a security structure to the msg->security field.
1139 * The security field is initialized to NULL when the structure is first
1141 * @msg contains the message structure to be modified.
1142 * Return 0 if operation was successful and permission is granted.
1143 * @msg_msg_free_security:
1144 * Deallocate the security structure for this message.
1145 * @msg contains the message structure to be modified.
1147 * Security hooks for System V IPC Message Queues
1149 * @msg_queue_alloc_security:
1150 * Allocate and attach a security structure to the
1151 * msq->q_perm.security field. The security field is initialized to
1152 * NULL when the structure is first created.
1153 * @msq contains the message queue structure to be modified.
1154 * Return 0 if operation was successful and permission is granted.
1155 * @msg_queue_free_security:
1156 * Deallocate security structure for this message queue.
1157 * @msq contains the message queue structure to be modified.
1158 * @msg_queue_associate:
1159 * Check permission when a message queue is requested through the
1160 * msgget system call. This hook is only called when returning the
1161 * message queue identifier for an existing message queue, not when a
1162 * new message queue is created.
1163 * @msq contains the message queue to act upon.
1164 * @msqflg contains the operation control flags.
1165 * Return 0 if permission is granted.
1166 * @msg_queue_msgctl:
1167 * Check permission when a message control operation specified by @cmd
1168 * is to be performed on the message queue @msq.
1169 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
1170 * @msq contains the message queue to act upon. May be NULL.
1171 * @cmd contains the operation to be performed.
1172 * Return 0 if permission is granted.
1173 * @msg_queue_msgsnd:
1174 * Check permission before a message, @msg, is enqueued on the message
1176 * @msq contains the message queue to send message to.
1177 * @msg contains the message to be enqueued.
1178 * @msqflg contains operational flags.
1179 * Return 0 if permission is granted.
1180 * @msg_queue_msgrcv:
1181 * Check permission before a message, @msg, is removed from the message
1182 * queue, @msq. The @target task structure contains a pointer to the
1183 * process that will be receiving the message (not equal to the current
1184 * process when inline receives are being performed).
1185 * @msq contains the message queue to retrieve message from.
1186 * @msg contains the message destination.
1187 * @target contains the task structure for recipient process.
1188 * @type contains the type of message requested.
1189 * @mode contains the operational flags.
1190 * Return 0 if permission is granted.
1192 * Security hooks for System V Shared Memory Segments
1194 * @shm_alloc_security:
1195 * Allocate and attach a security structure to the shp->shm_perm.security
1196 * field. The security field is initialized to NULL when the structure is
1198 * @shp contains the shared memory structure to be modified.
1199 * Return 0 if operation was successful and permission is granted.
1200 * @shm_free_security:
1201 * Deallocate the security struct for this memory segment.
1202 * @shp contains the shared memory structure to be modified.
1204 * Check permission when a shared memory region is requested through the
1205 * shmget system call. This hook is only called when returning the shared
1206 * memory region identifier for an existing region, not when a new shared
1207 * memory region is created.
1208 * @shp contains the shared memory structure to be modified.
1209 * @shmflg contains the operation control flags.
1210 * Return 0 if permission is granted.
1212 * Check permission when a shared memory control operation specified by
1213 * @cmd is to be performed on the shared memory region @shp.
1214 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1215 * @shp contains shared memory structure to be modified.
1216 * @cmd contains the operation to be performed.
1217 * Return 0 if permission is granted.
1219 * Check permissions prior to allowing the shmat system call to attach the
1220 * shared memory segment @shp to the data segment of the calling process.
1221 * The attaching address is specified by @shmaddr.
1222 * @shp contains the shared memory structure to be modified.
1223 * @shmaddr contains the address to attach memory region to.
1224 * @shmflg contains the operational flags.
1225 * Return 0 if permission is granted.
1227 * Security hooks for System V Semaphores
1229 * @sem_alloc_security:
1230 * Allocate and attach a security structure to the sma->sem_perm.security
1231 * field. The security field is initialized to NULL when the structure is
1233 * @sma contains the semaphore structure
1234 * Return 0 if operation was successful and permission is granted.
1235 * @sem_free_security:
1236 * deallocate security struct for this semaphore
1237 * @sma contains the semaphore structure.
1239 * Check permission when a semaphore is requested through the semget
1240 * system call. This hook is only called when returning the semaphore
1241 * identifier for an existing semaphore, not when a new one must be
1243 * @sma contains the semaphore structure.
1244 * @semflg contains the operation control flags.
1245 * Return 0 if permission is granted.
1247 * Check permission when a semaphore operation specified by @cmd is to be
1248 * performed on the semaphore @sma. The @sma may be NULL, e.g. for
1249 * IPC_INFO or SEM_INFO.
1250 * @sma contains the semaphore structure. May be NULL.
1251 * @cmd contains the operation to be performed.
1252 * Return 0 if permission is granted.
1254 * Check permissions before performing operations on members of the
1255 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1257 * @sma contains the semaphore structure.
1258 * @sops contains the operations to perform.
1259 * @nsops contains the number of operations to perform.
1260 * @alter contains the flag indicating whether changes are to be made.
1261 * Return 0 if permission is granted.
1263 * @ptrace_access_check:
1264 * Check permission before allowing the current process to trace the
1266 * Security modules may also want to perform a process tracing check
1267 * during an execve in the set_security or apply_creds hooks of
1268 * tracing check during an execve in the bprm_set_creds hook of
1269 * binprm_security_ops if the process is being traced and its security
1270 * attributes would be changed by the execve.
1271 * @child contains the task_struct structure for the target process.
1272 * @mode contains the PTRACE_MODE flags indicating the form of access.
1273 * Return 0 if permission is granted.
1275 * Check that the @parent process has sufficient permission to trace the
1276 * current process before allowing the current process to present itself
1277 * to the @parent process for tracing.
1278 * The parent process will still have to undergo the ptrace_access_check
1279 * checks before it is allowed to trace this one.
1280 * @parent contains the task_struct structure for debugger process.
1281 * Return 0 if permission is granted.
1283 * Get the @effective, @inheritable, and @permitted capability sets for
1284 * the @target process. The hook may also perform permission checking to
1285 * determine if the current process is allowed to see the capability sets
1286 * of the @target process.
1287 * @target contains the task_struct structure for target process.
1288 * @effective contains the effective capability set.
1289 * @inheritable contains the inheritable capability set.
1290 * @permitted contains the permitted capability set.
1291 * Return 0 if the capability sets were successfully obtained.
1293 * Set the @effective, @inheritable, and @permitted capability sets for
1294 * the current process.
1295 * @new contains the new credentials structure for target process.
1296 * @old contains the current credentials 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 and update @new if permission is granted.
1302 * Check whether the @tsk process has the @cap capability in the indicated
1304 * @tsk contains the task_struct for the process.
1305 * @cred contains the credentials to use.
1306 * @cap contains the capability <include/linux/capability.h>.
1307 * @audit: Whether to write an audit message or not
1308 * Return 0 if the capability is granted for @tsk.
1310 * Check permission before enabling or disabling process accounting. If
1311 * accounting is being enabled, then @file refers to the open file used to
1312 * store accounting records. If accounting is being disabled, then @file
1314 * @file contains the file structure for the accounting file (may be NULL).
1315 * Return 0 if permission is granted.
1317 * Check permission before accessing the @table sysctl variable in the
1318 * manner specified by @op.
1319 * @table contains the ctl_table structure for the sysctl variable.
1320 * @op contains the operation (001 = search, 002 = write, 004 = read).
1321 * Return 0 if permission is granted.
1323 * Check permission before accessing the kernel message ring or changing
1324 * logging to the console.
1325 * See the syslog(2) manual page for an explanation of the @type values.
1326 * @type contains the type of action.
1327 * Return 0 if permission is granted.
1329 * Check permission to change the system time.
1330 * struct timespec and timezone are defined in include/linux/time.h
1331 * @ts contains new time
1332 * @tz contains new timezone
1333 * Return 0 if permission is granted.
1334 * @vm_enough_memory:
1335 * Check permissions for allocating a new virtual mapping.
1336 * @mm contains the mm struct it is being added to.
1337 * @pages contains the number of pages.
1338 * Return 0 if permission is granted.
1341 * Convert secid to security context.
1342 * @secid contains the security ID.
1343 * @secdata contains the pointer that stores the converted security context.
1345 * Convert security context to secid.
1346 * @secid contains the pointer to the generated security ID.
1347 * @secdata contains the security context.
1350 * Release the security context.
1351 * @secdata contains the security context.
1352 * @seclen contains the length of the security context.
1354 * Security hooks for Audit
1357 * Allocate and initialize an LSM audit rule structure.
1358 * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
1359 * @op contains the operator the rule uses.
1360 * @rulestr contains the context where the rule will be applied to.
1361 * @lsmrule contains a pointer to receive the result.
1362 * Return 0 if @lsmrule has been successfully set,
1363 * -EINVAL in case of an invalid rule.
1365 * @audit_rule_known:
1366 * Specifies whether given @rule contains any fields related to current LSM.
1367 * @rule contains the audit rule of interest.
1368 * Return 1 in case of relation found, 0 otherwise.
1370 * @audit_rule_match:
1371 * Determine if given @secid matches a rule previously approved
1372 * by @audit_rule_known.
1373 * @secid contains the security id in question.
1374 * @field contains the field which relates to current LSM.
1375 * @op contains the operator that will be used for matching.
1376 * @rule points to the audit rule that will be checked against.
1377 * @actx points to the audit context associated with the check.
1378 * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
1381 * Deallocate the LSM audit rule structure previously allocated by
1383 * @rule contains the allocated rule
1385 * This is the main security structure.
1387 struct security_operations
{
1388 char name
[SECURITY_NAME_MAX
+ 1];
1390 int (*ptrace_access_check
) (struct task_struct
*child
, unsigned int mode
);
1391 int (*ptrace_traceme
) (struct task_struct
*parent
);
1392 int (*capget
) (struct task_struct
*target
,
1393 kernel_cap_t
*effective
,
1394 kernel_cap_t
*inheritable
, kernel_cap_t
*permitted
);
1395 int (*capset
) (struct cred
*new,
1396 const struct cred
*old
,
1397 const kernel_cap_t
*effective
,
1398 const kernel_cap_t
*inheritable
,
1399 const kernel_cap_t
*permitted
);
1400 int (*capable
) (struct task_struct
*tsk
, const struct cred
*cred
,
1401 int cap
, int audit
);
1402 int (*acct
) (struct file
*file
);
1403 int (*sysctl
) (struct ctl_table
*table
, int op
);
1404 int (*quotactl
) (int cmds
, int type
, int id
, struct super_block
*sb
);
1405 int (*quota_on
) (struct dentry
*dentry
);
1406 int (*syslog
) (int type
);
1407 int (*settime
) (struct timespec
*ts
, struct timezone
*tz
);
1408 int (*vm_enough_memory
) (struct mm_struct
*mm
, long pages
);
1410 int (*bprm_set_creds
) (struct linux_binprm
*bprm
);
1411 int (*bprm_check_security
) (struct linux_binprm
*bprm
);
1412 int (*bprm_secureexec
) (struct linux_binprm
*bprm
);
1413 void (*bprm_committing_creds
) (struct linux_binprm
*bprm
);
1414 void (*bprm_committed_creds
) (struct linux_binprm
*bprm
);
1416 int (*sb_alloc_security
) (struct super_block
*sb
);
1417 void (*sb_free_security
) (struct super_block
*sb
);
1418 int (*sb_copy_data
) (char *orig
, char *copy
);
1419 int (*sb_kern_mount
) (struct super_block
*sb
, int flags
, void *data
);
1420 int (*sb_show_options
) (struct seq_file
*m
, struct super_block
*sb
);
1421 int (*sb_statfs
) (struct dentry
*dentry
);
1422 int (*sb_mount
) (char *dev_name
, struct path
*path
,
1423 char *type
, unsigned long flags
, void *data
);
1424 int (*sb_check_sb
) (struct vfsmount
*mnt
, struct path
*path
);
1425 int (*sb_umount
) (struct vfsmount
*mnt
, int flags
);
1426 void (*sb_umount_close
) (struct vfsmount
*mnt
);
1427 void (*sb_umount_busy
) (struct vfsmount
*mnt
);
1428 void (*sb_post_remount
) (struct vfsmount
*mnt
,
1429 unsigned long flags
, void *data
);
1430 void (*sb_post_addmount
) (struct vfsmount
*mnt
,
1431 struct path
*mountpoint
);
1432 int (*sb_pivotroot
) (struct path
*old_path
,
1433 struct path
*new_path
);
1434 void (*sb_post_pivotroot
) (struct path
*old_path
,
1435 struct path
*new_path
);
1436 int (*sb_set_mnt_opts
) (struct super_block
*sb
,
1437 struct security_mnt_opts
*opts
);
1438 void (*sb_clone_mnt_opts
) (const struct super_block
*oldsb
,
1439 struct super_block
*newsb
);
1440 int (*sb_parse_opts_str
) (char *options
, struct security_mnt_opts
*opts
);
1442 #ifdef CONFIG_SECURITY_PATH
1443 int (*path_unlink
) (struct path
*dir
, struct dentry
*dentry
);
1444 int (*path_mkdir
) (struct path
*dir
, struct dentry
*dentry
, int mode
);
1445 int (*path_rmdir
) (struct path
*dir
, struct dentry
*dentry
);
1446 int (*path_mknod
) (struct path
*dir
, struct dentry
*dentry
, int mode
,
1448 int (*path_truncate
) (struct path
*path
, loff_t length
,
1449 unsigned int time_attrs
);
1450 int (*path_symlink
) (struct path
*dir
, struct dentry
*dentry
,
1451 const char *old_name
);
1452 int (*path_link
) (struct dentry
*old_dentry
, struct path
*new_dir
,
1453 struct dentry
*new_dentry
);
1454 int (*path_rename
) (struct path
*old_dir
, struct dentry
*old_dentry
,
1455 struct path
*new_dir
, struct dentry
*new_dentry
);
1458 int (*inode_alloc_security
) (struct inode
*inode
);
1459 void (*inode_free_security
) (struct inode
*inode
);
1460 int (*inode_init_security
) (struct inode
*inode
, struct inode
*dir
,
1461 char **name
, void **value
, size_t *len
);
1462 int (*inode_create
) (struct inode
*dir
,
1463 struct dentry
*dentry
, int mode
);
1464 int (*inode_link
) (struct dentry
*old_dentry
,
1465 struct inode
*dir
, struct dentry
*new_dentry
);
1466 int (*inode_unlink
) (struct inode
*dir
, struct dentry
*dentry
);
1467 int (*inode_symlink
) (struct inode
*dir
,
1468 struct dentry
*dentry
, const char *old_name
);
1469 int (*inode_mkdir
) (struct inode
*dir
, struct dentry
*dentry
, int mode
);
1470 int (*inode_rmdir
) (struct inode
*dir
, struct dentry
*dentry
);
1471 int (*inode_mknod
) (struct inode
*dir
, struct dentry
*dentry
,
1472 int mode
, dev_t dev
);
1473 int (*inode_rename
) (struct inode
*old_dir
, struct dentry
*old_dentry
,
1474 struct inode
*new_dir
, struct dentry
*new_dentry
);
1475 int (*inode_readlink
) (struct dentry
*dentry
);
1476 int (*inode_follow_link
) (struct dentry
*dentry
, struct nameidata
*nd
);
1477 int (*inode_permission
) (struct inode
*inode
, int mask
);
1478 int (*inode_setattr
) (struct dentry
*dentry
, struct iattr
*attr
);
1479 int (*inode_getattr
) (struct vfsmount
*mnt
, struct dentry
*dentry
);
1480 void (*inode_delete
) (struct inode
*inode
);
1481 int (*inode_setxattr
) (struct dentry
*dentry
, const char *name
,
1482 const void *value
, size_t size
, int flags
);
1483 void (*inode_post_setxattr
) (struct dentry
*dentry
, const char *name
,
1484 const void *value
, size_t size
, int flags
);
1485 int (*inode_getxattr
) (struct dentry
*dentry
, const char *name
);
1486 int (*inode_listxattr
) (struct dentry
*dentry
);
1487 int (*inode_removexattr
) (struct dentry
*dentry
, const char *name
);
1488 int (*inode_need_killpriv
) (struct dentry
*dentry
);
1489 int (*inode_killpriv
) (struct dentry
*dentry
);
1490 int (*inode_getsecurity
) (const struct inode
*inode
, const char *name
, void **buffer
, bool alloc
);
1491 int (*inode_setsecurity
) (struct inode
*inode
, const char *name
, const void *value
, size_t size
, int flags
);
1492 int (*inode_listsecurity
) (struct inode
*inode
, char *buffer
, size_t buffer_size
);
1493 void (*inode_getsecid
) (const struct inode
*inode
, u32
*secid
);
1495 int (*file_permission
) (struct file
*file
, int mask
);
1496 int (*file_alloc_security
) (struct file
*file
);
1497 void (*file_free_security
) (struct file
*file
);
1498 int (*file_ioctl
) (struct file
*file
, unsigned int cmd
,
1500 int (*file_mmap
) (struct file
*file
,
1501 unsigned long reqprot
, unsigned long prot
,
1502 unsigned long flags
, unsigned long addr
,
1503 unsigned long addr_only
);
1504 int (*file_mprotect
) (struct vm_area_struct
*vma
,
1505 unsigned long reqprot
,
1506 unsigned long prot
);
1507 int (*file_lock
) (struct file
*file
, unsigned int cmd
);
1508 int (*file_fcntl
) (struct file
*file
, unsigned int cmd
,
1510 int (*file_set_fowner
) (struct file
*file
);
1511 int (*file_send_sigiotask
) (struct task_struct
*tsk
,
1512 struct fown_struct
*fown
, int sig
);
1513 int (*file_receive
) (struct file
*file
);
1514 int (*dentry_open
) (struct file
*file
, const struct cred
*cred
);
1516 int (*task_create
) (unsigned long clone_flags
);
1517 int (*cred_alloc_blank
) (struct cred
*cred
, gfp_t gfp
);
1518 void (*cred_free
) (struct cred
*cred
);
1519 int (*cred_prepare
)(struct cred
*new, const struct cred
*old
,
1521 void (*cred_commit
)(struct cred
*new, const struct cred
*old
);
1522 void (*cred_transfer
)(struct cred
*new, const struct cred
*old
);
1523 int (*kernel_act_as
)(struct cred
*new, u32 secid
);
1524 int (*kernel_create_files_as
)(struct cred
*new, struct inode
*inode
);
1525 int (*kernel_module_request
)(void);
1526 int (*task_setuid
) (uid_t id0
, uid_t id1
, uid_t id2
, int flags
);
1527 int (*task_fix_setuid
) (struct cred
*new, const struct cred
*old
,
1529 int (*task_setgid
) (gid_t id0
, gid_t id1
, gid_t id2
, int flags
);
1530 int (*task_setpgid
) (struct task_struct
*p
, pid_t pgid
);
1531 int (*task_getpgid
) (struct task_struct
*p
);
1532 int (*task_getsid
) (struct task_struct
*p
);
1533 void (*task_getsecid
) (struct task_struct
*p
, u32
*secid
);
1534 int (*task_setgroups
) (struct group_info
*group_info
);
1535 int (*task_setnice
) (struct task_struct
*p
, int nice
);
1536 int (*task_setioprio
) (struct task_struct
*p
, int ioprio
);
1537 int (*task_getioprio
) (struct task_struct
*p
);
1538 int (*task_setrlimit
) (unsigned int resource
, struct rlimit
*new_rlim
);
1539 int (*task_setscheduler
) (struct task_struct
*p
, int policy
,
1540 struct sched_param
*lp
);
1541 int (*task_getscheduler
) (struct task_struct
*p
);
1542 int (*task_movememory
) (struct task_struct
*p
);
1543 int (*task_kill
) (struct task_struct
*p
,
1544 struct siginfo
*info
, int sig
, u32 secid
);
1545 int (*task_wait
) (struct task_struct
*p
);
1546 int (*task_prctl
) (int option
, unsigned long arg2
,
1547 unsigned long arg3
, unsigned long arg4
,
1548 unsigned long arg5
);
1549 void (*task_to_inode
) (struct task_struct
*p
, struct inode
*inode
);
1551 int (*ipc_permission
) (struct kern_ipc_perm
*ipcp
, short flag
);
1552 void (*ipc_getsecid
) (struct kern_ipc_perm
*ipcp
, u32
*secid
);
1554 int (*msg_msg_alloc_security
) (struct msg_msg
*msg
);
1555 void (*msg_msg_free_security
) (struct msg_msg
*msg
);
1557 int (*msg_queue_alloc_security
) (struct msg_queue
*msq
);
1558 void (*msg_queue_free_security
) (struct msg_queue
*msq
);
1559 int (*msg_queue_associate
) (struct msg_queue
*msq
, int msqflg
);
1560 int (*msg_queue_msgctl
) (struct msg_queue
*msq
, int cmd
);
1561 int (*msg_queue_msgsnd
) (struct msg_queue
*msq
,
1562 struct msg_msg
*msg
, int msqflg
);
1563 int (*msg_queue_msgrcv
) (struct msg_queue
*msq
,
1564 struct msg_msg
*msg
,
1565 struct task_struct
*target
,
1566 long type
, int mode
);
1568 int (*shm_alloc_security
) (struct shmid_kernel
*shp
);
1569 void (*shm_free_security
) (struct shmid_kernel
*shp
);
1570 int (*shm_associate
) (struct shmid_kernel
*shp
, int shmflg
);
1571 int (*shm_shmctl
) (struct shmid_kernel
*shp
, int cmd
);
1572 int (*shm_shmat
) (struct shmid_kernel
*shp
,
1573 char __user
*shmaddr
, int shmflg
);
1575 int (*sem_alloc_security
) (struct sem_array
*sma
);
1576 void (*sem_free_security
) (struct sem_array
*sma
);
1577 int (*sem_associate
) (struct sem_array
*sma
, int semflg
);
1578 int (*sem_semctl
) (struct sem_array
*sma
, int cmd
);
1579 int (*sem_semop
) (struct sem_array
*sma
,
1580 struct sembuf
*sops
, unsigned nsops
, int alter
);
1582 int (*netlink_send
) (struct sock
*sk
, struct sk_buff
*skb
);
1583 int (*netlink_recv
) (struct sk_buff
*skb
, int cap
);
1585 void (*d_instantiate
) (struct dentry
*dentry
, struct inode
*inode
);
1587 int (*getprocattr
) (struct task_struct
*p
, char *name
, char **value
);
1588 int (*setprocattr
) (struct task_struct
*p
, char *name
, void *value
, size_t size
);
1589 int (*secid_to_secctx
) (u32 secid
, char **secdata
, u32
*seclen
);
1590 int (*secctx_to_secid
) (const char *secdata
, u32 seclen
, u32
*secid
);
1591 void (*release_secctx
) (char *secdata
, u32 seclen
);
1593 #ifdef CONFIG_SECURITY_NETWORK
1594 int (*unix_stream_connect
) (struct socket
*sock
,
1595 struct socket
*other
, struct sock
*newsk
);
1596 int (*unix_may_send
) (struct socket
*sock
, struct socket
*other
);
1598 int (*socket_create
) (int family
, int type
, int protocol
, int kern
);
1599 int (*socket_post_create
) (struct socket
*sock
, int family
,
1600 int type
, int protocol
, int kern
);
1601 int (*socket_bind
) (struct socket
*sock
,
1602 struct sockaddr
*address
, int addrlen
);
1603 int (*socket_connect
) (struct socket
*sock
,
1604 struct sockaddr
*address
, int addrlen
);
1605 int (*socket_listen
) (struct socket
*sock
, int backlog
);
1606 int (*socket_accept
) (struct socket
*sock
, struct socket
*newsock
);
1607 int (*socket_sendmsg
) (struct socket
*sock
,
1608 struct msghdr
*msg
, int size
);
1609 int (*socket_recvmsg
) (struct socket
*sock
,
1610 struct msghdr
*msg
, int size
, int flags
);
1611 int (*socket_getsockname
) (struct socket
*sock
);
1612 int (*socket_getpeername
) (struct socket
*sock
);
1613 int (*socket_getsockopt
) (struct socket
*sock
, int level
, int optname
);
1614 int (*socket_setsockopt
) (struct socket
*sock
, int level
, int optname
);
1615 int (*socket_shutdown
) (struct socket
*sock
, int how
);
1616 int (*socket_sock_rcv_skb
) (struct sock
*sk
, struct sk_buff
*skb
);
1617 int (*socket_getpeersec_stream
) (struct socket
*sock
, char __user
*optval
, int __user
*optlen
, unsigned len
);
1618 int (*socket_getpeersec_dgram
) (struct socket
*sock
, struct sk_buff
*skb
, u32
*secid
);
1619 int (*sk_alloc_security
) (struct sock
*sk
, int family
, gfp_t priority
);
1620 void (*sk_free_security
) (struct sock
*sk
);
1621 void (*sk_clone_security
) (const struct sock
*sk
, struct sock
*newsk
);
1622 void (*sk_getsecid
) (struct sock
*sk
, u32
*secid
);
1623 void (*sock_graft
) (struct sock
*sk
, struct socket
*parent
);
1624 int (*inet_conn_request
) (struct sock
*sk
, struct sk_buff
*skb
,
1625 struct request_sock
*req
);
1626 void (*inet_csk_clone
) (struct sock
*newsk
, const struct request_sock
*req
);
1627 void (*inet_conn_established
) (struct sock
*sk
, struct sk_buff
*skb
);
1628 void (*req_classify_flow
) (const struct request_sock
*req
, struct flowi
*fl
);
1629 int (*tun_dev_create
)(void);
1630 void (*tun_dev_post_create
)(struct sock
*sk
);
1631 int (*tun_dev_attach
)(struct sock
*sk
);
1632 #endif /* CONFIG_SECURITY_NETWORK */
1634 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1635 int (*xfrm_policy_alloc_security
) (struct xfrm_sec_ctx
**ctxp
,
1636 struct xfrm_user_sec_ctx
*sec_ctx
);
1637 int (*xfrm_policy_clone_security
) (struct xfrm_sec_ctx
*old_ctx
, struct xfrm_sec_ctx
**new_ctx
);
1638 void (*xfrm_policy_free_security
) (struct xfrm_sec_ctx
*ctx
);
1639 int (*xfrm_policy_delete_security
) (struct xfrm_sec_ctx
*ctx
);
1640 int (*xfrm_state_alloc_security
) (struct xfrm_state
*x
,
1641 struct xfrm_user_sec_ctx
*sec_ctx
,
1643 void (*xfrm_state_free_security
) (struct xfrm_state
*x
);
1644 int (*xfrm_state_delete_security
) (struct xfrm_state
*x
);
1645 int (*xfrm_policy_lookup
) (struct xfrm_sec_ctx
*ctx
, u32 fl_secid
, u8 dir
);
1646 int (*xfrm_state_pol_flow_match
) (struct xfrm_state
*x
,
1647 struct xfrm_policy
*xp
,
1649 int (*xfrm_decode_session
) (struct sk_buff
*skb
, u32
*secid
, int ckall
);
1650 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1652 /* key management security hooks */
1654 int (*key_alloc
) (struct key
*key
, const struct cred
*cred
, unsigned long flags
);
1655 void (*key_free
) (struct key
*key
);
1656 int (*key_permission
) (key_ref_t key_ref
,
1657 const struct cred
*cred
,
1659 int (*key_getsecurity
)(struct key
*key
, char **_buffer
);
1660 int (*key_session_to_parent
)(const struct cred
*cred
,
1661 const struct cred
*parent_cred
,
1663 #endif /* CONFIG_KEYS */
1666 int (*audit_rule_init
) (u32 field
, u32 op
, char *rulestr
, void **lsmrule
);
1667 int (*audit_rule_known
) (struct audit_krule
*krule
);
1668 int (*audit_rule_match
) (u32 secid
, u32 field
, u32 op
, void *lsmrule
,
1669 struct audit_context
*actx
);
1670 void (*audit_rule_free
) (void *lsmrule
);
1671 #endif /* CONFIG_AUDIT */
1675 extern int security_init(void);
1676 extern int security_module_enable(struct security_operations
*ops
);
1677 extern int register_security(struct security_operations
*ops
);
1679 /* Security operations */
1680 int security_ptrace_access_check(struct task_struct
*child
, unsigned int mode
);
1681 int security_ptrace_traceme(struct task_struct
*parent
);
1682 int security_capget(struct task_struct
*target
,
1683 kernel_cap_t
*effective
,
1684 kernel_cap_t
*inheritable
,
1685 kernel_cap_t
*permitted
);
1686 int security_capset(struct cred
*new, const struct cred
*old
,
1687 const kernel_cap_t
*effective
,
1688 const kernel_cap_t
*inheritable
,
1689 const kernel_cap_t
*permitted
);
1690 int security_capable(int cap
);
1691 int security_real_capable(struct task_struct
*tsk
, int cap
);
1692 int security_real_capable_noaudit(struct task_struct
*tsk
, int cap
);
1693 int security_acct(struct file
*file
);
1694 int security_sysctl(struct ctl_table
*table
, int op
);
1695 int security_quotactl(int cmds
, int type
, int id
, struct super_block
*sb
);
1696 int security_quota_on(struct dentry
*dentry
);
1697 int security_syslog(int type
);
1698 int security_settime(struct timespec
*ts
, struct timezone
*tz
);
1699 int security_vm_enough_memory(long pages
);
1700 int security_vm_enough_memory_mm(struct mm_struct
*mm
, long pages
);
1701 int security_vm_enough_memory_kern(long pages
);
1702 int security_bprm_set_creds(struct linux_binprm
*bprm
);
1703 int security_bprm_check(struct linux_binprm
*bprm
);
1704 void security_bprm_committing_creds(struct linux_binprm
*bprm
);
1705 void security_bprm_committed_creds(struct linux_binprm
*bprm
);
1706 int security_bprm_secureexec(struct linux_binprm
*bprm
);
1707 int security_sb_alloc(struct super_block
*sb
);
1708 void security_sb_free(struct super_block
*sb
);
1709 int security_sb_copy_data(char *orig
, char *copy
);
1710 int security_sb_kern_mount(struct super_block
*sb
, int flags
, void *data
);
1711 int security_sb_show_options(struct seq_file
*m
, struct super_block
*sb
);
1712 int security_sb_statfs(struct dentry
*dentry
);
1713 int security_sb_mount(char *dev_name
, struct path
*path
,
1714 char *type
, unsigned long flags
, void *data
);
1715 int security_sb_check_sb(struct vfsmount
*mnt
, struct path
*path
);
1716 int security_sb_umount(struct vfsmount
*mnt
, int flags
);
1717 void security_sb_umount_close(struct vfsmount
*mnt
);
1718 void security_sb_umount_busy(struct vfsmount
*mnt
);
1719 void security_sb_post_remount(struct vfsmount
*mnt
, unsigned long flags
, void *data
);
1720 void security_sb_post_addmount(struct vfsmount
*mnt
, struct path
*mountpoint
);
1721 int security_sb_pivotroot(struct path
*old_path
, struct path
*new_path
);
1722 void security_sb_post_pivotroot(struct path
*old_path
, struct path
*new_path
);
1723 int security_sb_set_mnt_opts(struct super_block
*sb
, struct security_mnt_opts
*opts
);
1724 void security_sb_clone_mnt_opts(const struct super_block
*oldsb
,
1725 struct super_block
*newsb
);
1726 int security_sb_parse_opts_str(char *options
, struct security_mnt_opts
*opts
);
1728 int security_inode_alloc(struct inode
*inode
);
1729 void security_inode_free(struct inode
*inode
);
1730 int security_inode_init_security(struct inode
*inode
, struct inode
*dir
,
1731 char **name
, void **value
, size_t *len
);
1732 int security_inode_create(struct inode
*dir
, struct dentry
*dentry
, int mode
);
1733 int security_inode_link(struct dentry
*old_dentry
, struct inode
*dir
,
1734 struct dentry
*new_dentry
);
1735 int security_inode_unlink(struct inode
*dir
, struct dentry
*dentry
);
1736 int security_inode_symlink(struct inode
*dir
, struct dentry
*dentry
,
1737 const char *old_name
);
1738 int security_inode_mkdir(struct inode
*dir
, struct dentry
*dentry
, int mode
);
1739 int security_inode_rmdir(struct inode
*dir
, struct dentry
*dentry
);
1740 int security_inode_mknod(struct inode
*dir
, struct dentry
*dentry
, int mode
, dev_t dev
);
1741 int security_inode_rename(struct inode
*old_dir
, struct dentry
*old_dentry
,
1742 struct inode
*new_dir
, struct dentry
*new_dentry
);
1743 int security_inode_readlink(struct dentry
*dentry
);
1744 int security_inode_follow_link(struct dentry
*dentry
, struct nameidata
*nd
);
1745 int security_inode_permission(struct inode
*inode
, int mask
);
1746 int security_inode_setattr(struct dentry
*dentry
, struct iattr
*attr
);
1747 int security_inode_getattr(struct vfsmount
*mnt
, struct dentry
*dentry
);
1748 void security_inode_delete(struct inode
*inode
);
1749 int security_inode_setxattr(struct dentry
*dentry
, const char *name
,
1750 const void *value
, size_t size
, int flags
);
1751 void security_inode_post_setxattr(struct dentry
*dentry
, const char *name
,
1752 const void *value
, size_t size
, int flags
);
1753 int security_inode_getxattr(struct dentry
*dentry
, const char *name
);
1754 int security_inode_listxattr(struct dentry
*dentry
);
1755 int security_inode_removexattr(struct dentry
*dentry
, const char *name
);
1756 int security_inode_need_killpriv(struct dentry
*dentry
);
1757 int security_inode_killpriv(struct dentry
*dentry
);
1758 int security_inode_getsecurity(const struct inode
*inode
, const char *name
, void **buffer
, bool alloc
);
1759 int security_inode_setsecurity(struct inode
*inode
, const char *name
, const void *value
, size_t size
, int flags
);
1760 int security_inode_listsecurity(struct inode
*inode
, char *buffer
, size_t buffer_size
);
1761 void security_inode_getsecid(const struct inode
*inode
, u32
*secid
);
1762 int security_file_permission(struct file
*file
, int mask
);
1763 int security_file_alloc(struct file
*file
);
1764 void security_file_free(struct file
*file
);
1765 int security_file_ioctl(struct file
*file
, unsigned int cmd
, unsigned long arg
);
1766 int security_file_mmap(struct file
*file
, unsigned long reqprot
,
1767 unsigned long prot
, unsigned long flags
,
1768 unsigned long addr
, unsigned long addr_only
);
1769 int security_file_mprotect(struct vm_area_struct
*vma
, unsigned long reqprot
,
1770 unsigned long prot
);
1771 int security_file_lock(struct file
*file
, unsigned int cmd
);
1772 int security_file_fcntl(struct file
*file
, unsigned int cmd
, unsigned long arg
);
1773 int security_file_set_fowner(struct file
*file
);
1774 int security_file_send_sigiotask(struct task_struct
*tsk
,
1775 struct fown_struct
*fown
, int sig
);
1776 int security_file_receive(struct file
*file
);
1777 int security_dentry_open(struct file
*file
, const struct cred
*cred
);
1778 int security_task_create(unsigned long clone_flags
);
1779 int security_cred_alloc_blank(struct cred
*cred
, gfp_t gfp
);
1780 void security_cred_free(struct cred
*cred
);
1781 int security_prepare_creds(struct cred
*new, const struct cred
*old
, gfp_t gfp
);
1782 void security_commit_creds(struct cred
*new, const struct cred
*old
);
1783 void security_transfer_creds(struct cred
*new, const struct cred
*old
);
1784 int security_kernel_act_as(struct cred
*new, u32 secid
);
1785 int security_kernel_create_files_as(struct cred
*new, struct inode
*inode
);
1786 int security_kernel_module_request(void);
1787 int security_task_setuid(uid_t id0
, uid_t id1
, uid_t id2
, int flags
);
1788 int security_task_fix_setuid(struct cred
*new, const struct cred
*old
,
1790 int security_task_setgid(gid_t id0
, gid_t id1
, gid_t id2
, int flags
);
1791 int security_task_setpgid(struct task_struct
*p
, pid_t pgid
);
1792 int security_task_getpgid(struct task_struct
*p
);
1793 int security_task_getsid(struct task_struct
*p
);
1794 void security_task_getsecid(struct task_struct
*p
, u32
*secid
);
1795 int security_task_setgroups(struct group_info
*group_info
);
1796 int security_task_setnice(struct task_struct
*p
, int nice
);
1797 int security_task_setioprio(struct task_struct
*p
, int ioprio
);
1798 int security_task_getioprio(struct task_struct
*p
);
1799 int security_task_setrlimit(unsigned int resource
, struct rlimit
*new_rlim
);
1800 int security_task_setscheduler(struct task_struct
*p
,
1801 int policy
, struct sched_param
*lp
);
1802 int security_task_getscheduler(struct task_struct
*p
);
1803 int security_task_movememory(struct task_struct
*p
);
1804 int security_task_kill(struct task_struct
*p
, struct siginfo
*info
,
1805 int sig
, u32 secid
);
1806 int security_task_wait(struct task_struct
*p
);
1807 int security_task_prctl(int option
, unsigned long arg2
, unsigned long arg3
,
1808 unsigned long arg4
, unsigned long arg5
);
1809 void security_task_to_inode(struct task_struct
*p
, struct inode
*inode
);
1810 int security_ipc_permission(struct kern_ipc_perm
*ipcp
, short flag
);
1811 void security_ipc_getsecid(struct kern_ipc_perm
*ipcp
, u32
*secid
);
1812 int security_msg_msg_alloc(struct msg_msg
*msg
);
1813 void security_msg_msg_free(struct msg_msg
*msg
);
1814 int security_msg_queue_alloc(struct msg_queue
*msq
);
1815 void security_msg_queue_free(struct msg_queue
*msq
);
1816 int security_msg_queue_associate(struct msg_queue
*msq
, int msqflg
);
1817 int security_msg_queue_msgctl(struct msg_queue
*msq
, int cmd
);
1818 int security_msg_queue_msgsnd(struct msg_queue
*msq
,
1819 struct msg_msg
*msg
, int msqflg
);
1820 int security_msg_queue_msgrcv(struct msg_queue
*msq
, struct msg_msg
*msg
,
1821 struct task_struct
*target
, long type
, int mode
);
1822 int security_shm_alloc(struct shmid_kernel
*shp
);
1823 void security_shm_free(struct shmid_kernel
*shp
);
1824 int security_shm_associate(struct shmid_kernel
*shp
, int shmflg
);
1825 int security_shm_shmctl(struct shmid_kernel
*shp
, int cmd
);
1826 int security_shm_shmat(struct shmid_kernel
*shp
, char __user
*shmaddr
, int shmflg
);
1827 int security_sem_alloc(struct sem_array
*sma
);
1828 void security_sem_free(struct sem_array
*sma
);
1829 int security_sem_associate(struct sem_array
*sma
, int semflg
);
1830 int security_sem_semctl(struct sem_array
*sma
, int cmd
);
1831 int security_sem_semop(struct sem_array
*sma
, struct sembuf
*sops
,
1832 unsigned nsops
, int alter
);
1833 void security_d_instantiate(struct dentry
*dentry
, struct inode
*inode
);
1834 int security_getprocattr(struct task_struct
*p
, char *name
, char **value
);
1835 int security_setprocattr(struct task_struct
*p
, char *name
, void *value
, size_t size
);
1836 int security_netlink_send(struct sock
*sk
, struct sk_buff
*skb
);
1837 int security_netlink_recv(struct sk_buff
*skb
, int cap
);
1838 int security_secid_to_secctx(u32 secid
, char **secdata
, u32
*seclen
);
1839 int security_secctx_to_secid(const char *secdata
, u32 seclen
, u32
*secid
);
1840 void security_release_secctx(char *secdata
, u32 seclen
);
1842 #else /* CONFIG_SECURITY */
1843 struct security_mnt_opts
{
1846 static inline void security_init_mnt_opts(struct security_mnt_opts
*opts
)
1850 static inline void security_free_mnt_opts(struct security_mnt_opts
*opts
)
1855 * This is the default capabilities functionality. Most of these functions
1856 * are just stubbed out, but a few must call the proper capable code.
1859 static inline int security_init(void)
1864 static inline int security_ptrace_access_check(struct task_struct
*child
,
1867 return cap_ptrace_access_check(child
, mode
);
1870 static inline int security_ptrace_traceme(struct task_struct
*parent
)
1872 return cap_ptrace_traceme(parent
);
1875 static inline int security_capget(struct task_struct
*target
,
1876 kernel_cap_t
*effective
,
1877 kernel_cap_t
*inheritable
,
1878 kernel_cap_t
*permitted
)
1880 return cap_capget(target
, effective
, inheritable
, permitted
);
1883 static inline int security_capset(struct cred
*new,
1884 const struct cred
*old
,
1885 const kernel_cap_t
*effective
,
1886 const kernel_cap_t
*inheritable
,
1887 const kernel_cap_t
*permitted
)
1889 return cap_capset(new, old
, effective
, inheritable
, permitted
);
1892 static inline int security_capable(int cap
)
1894 return cap_capable(current
, current_cred(), cap
, SECURITY_CAP_AUDIT
);
1897 static inline int security_real_capable(struct task_struct
*tsk
, int cap
)
1902 ret
= cap_capable(tsk
, __task_cred(tsk
), cap
, SECURITY_CAP_AUDIT
);
1908 int security_real_capable_noaudit(struct task_struct
*tsk
, int cap
)
1913 ret
= cap_capable(tsk
, __task_cred(tsk
), cap
,
1914 SECURITY_CAP_NOAUDIT
);
1919 static inline int security_acct(struct file
*file
)
1924 static inline int security_sysctl(struct ctl_table
*table
, int op
)
1929 static inline int security_quotactl(int cmds
, int type
, int id
,
1930 struct super_block
*sb
)
1935 static inline int security_quota_on(struct dentry
*dentry
)
1940 static inline int security_syslog(int type
)
1942 return cap_syslog(type
);
1945 static inline int security_settime(struct timespec
*ts
, struct timezone
*tz
)
1947 return cap_settime(ts
, tz
);
1950 static inline int security_vm_enough_memory(long pages
)
1952 WARN_ON(current
->mm
== NULL
);
1953 return cap_vm_enough_memory(current
->mm
, pages
);
1956 static inline int security_vm_enough_memory_mm(struct mm_struct
*mm
, long pages
)
1958 WARN_ON(mm
== NULL
);
1959 return cap_vm_enough_memory(mm
, pages
);
1962 static inline int security_vm_enough_memory_kern(long pages
)
1964 /* If current->mm is a kernel thread then we will pass NULL,
1965 for this specific case that is fine */
1966 return cap_vm_enough_memory(current
->mm
, pages
);
1969 static inline int security_bprm_set_creds(struct linux_binprm
*bprm
)
1971 return cap_bprm_set_creds(bprm
);
1974 static inline int security_bprm_check(struct linux_binprm
*bprm
)
1979 static inline void security_bprm_committing_creds(struct linux_binprm
*bprm
)
1983 static inline void security_bprm_committed_creds(struct linux_binprm
*bprm
)
1987 static inline int security_bprm_secureexec(struct linux_binprm
*bprm
)
1989 return cap_bprm_secureexec(bprm
);
1992 static inline int security_sb_alloc(struct super_block
*sb
)
1997 static inline void security_sb_free(struct super_block
*sb
)
2000 static inline int security_sb_copy_data(char *orig
, char *copy
)
2005 static inline int security_sb_kern_mount(struct super_block
*sb
, int flags
, void *data
)
2010 static inline int security_sb_show_options(struct seq_file
*m
,
2011 struct super_block
*sb
)
2016 static inline int security_sb_statfs(struct dentry
*dentry
)
2021 static inline int security_sb_mount(char *dev_name
, struct path
*path
,
2022 char *type
, unsigned long flags
,
2028 static inline int security_sb_check_sb(struct vfsmount
*mnt
,
2034 static inline int security_sb_umount(struct vfsmount
*mnt
, int flags
)
2039 static inline void security_sb_umount_close(struct vfsmount
*mnt
)
2042 static inline void security_sb_umount_busy(struct vfsmount
*mnt
)
2045 static inline void security_sb_post_remount(struct vfsmount
*mnt
,
2046 unsigned long flags
, void *data
)
2049 static inline void security_sb_post_addmount(struct vfsmount
*mnt
,
2050 struct path
*mountpoint
)
2053 static inline int security_sb_pivotroot(struct path
*old_path
,
2054 struct path
*new_path
)
2059 static inline void security_sb_post_pivotroot(struct path
*old_path
,
2060 struct path
*new_path
)
2063 static inline int security_sb_set_mnt_opts(struct super_block
*sb
,
2064 struct security_mnt_opts
*opts
)
2069 static inline void security_sb_clone_mnt_opts(const struct super_block
*oldsb
,
2070 struct super_block
*newsb
)
2073 static inline int security_sb_parse_opts_str(char *options
, struct security_mnt_opts
*opts
)
2078 static inline int security_inode_alloc(struct inode
*inode
)
2083 static inline void security_inode_free(struct inode
*inode
)
2086 static inline int security_inode_init_security(struct inode
*inode
,
2095 static inline int security_inode_create(struct inode
*dir
,
2096 struct dentry
*dentry
,
2102 static inline int security_inode_link(struct dentry
*old_dentry
,
2104 struct dentry
*new_dentry
)
2109 static inline int security_inode_unlink(struct inode
*dir
,
2110 struct dentry
*dentry
)
2115 static inline int security_inode_symlink(struct inode
*dir
,
2116 struct dentry
*dentry
,
2117 const char *old_name
)
2122 static inline int security_inode_mkdir(struct inode
*dir
,
2123 struct dentry
*dentry
,
2129 static inline int security_inode_rmdir(struct inode
*dir
,
2130 struct dentry
*dentry
)
2135 static inline int security_inode_mknod(struct inode
*dir
,
2136 struct dentry
*dentry
,
2137 int mode
, dev_t dev
)
2142 static inline int security_inode_rename(struct inode
*old_dir
,
2143 struct dentry
*old_dentry
,
2144 struct inode
*new_dir
,
2145 struct dentry
*new_dentry
)
2150 static inline int security_inode_readlink(struct dentry
*dentry
)
2155 static inline int security_inode_follow_link(struct dentry
*dentry
,
2156 struct nameidata
*nd
)
2161 static inline int security_inode_permission(struct inode
*inode
, int mask
)
2166 static inline int security_inode_setattr(struct dentry
*dentry
,
2172 static inline int security_inode_getattr(struct vfsmount
*mnt
,
2173 struct dentry
*dentry
)
2178 static inline void security_inode_delete(struct inode
*inode
)
2181 static inline int security_inode_setxattr(struct dentry
*dentry
,
2182 const char *name
, const void *value
, size_t size
, int flags
)
2184 return cap_inode_setxattr(dentry
, name
, value
, size
, flags
);
2187 static inline void security_inode_post_setxattr(struct dentry
*dentry
,
2188 const char *name
, const void *value
, size_t size
, int flags
)
2191 static inline int security_inode_getxattr(struct dentry
*dentry
,
2197 static inline int security_inode_listxattr(struct dentry
*dentry
)
2202 static inline int security_inode_removexattr(struct dentry
*dentry
,
2205 return cap_inode_removexattr(dentry
, name
);
2208 static inline int security_inode_need_killpriv(struct dentry
*dentry
)
2210 return cap_inode_need_killpriv(dentry
);
2213 static inline int security_inode_killpriv(struct dentry
*dentry
)
2215 return cap_inode_killpriv(dentry
);
2218 static inline int security_inode_getsecurity(const struct inode
*inode
, const char *name
, void **buffer
, bool alloc
)
2223 static inline int security_inode_setsecurity(struct inode
*inode
, const char *name
, const void *value
, size_t size
, int flags
)
2228 static inline int security_inode_listsecurity(struct inode
*inode
, char *buffer
, size_t buffer_size
)
2233 static inline void security_inode_getsecid(const struct inode
*inode
, u32
*secid
)
2238 static inline int security_file_permission(struct file
*file
, int mask
)
2243 static inline int security_file_alloc(struct file
*file
)
2248 static inline void security_file_free(struct file
*file
)
2251 static inline int security_file_ioctl(struct file
*file
, unsigned int cmd
,
2257 static inline int security_file_mmap(struct file
*file
, unsigned long reqprot
,
2259 unsigned long flags
,
2261 unsigned long addr_only
)
2263 return cap_file_mmap(file
, reqprot
, prot
, flags
, addr
, addr_only
);
2266 static inline int security_file_mprotect(struct vm_area_struct
*vma
,
2267 unsigned long reqprot
,
2273 static inline int security_file_lock(struct file
*file
, unsigned int cmd
)
2278 static inline int security_file_fcntl(struct file
*file
, unsigned int cmd
,
2284 static inline int security_file_set_fowner(struct file
*file
)
2289 static inline int security_file_send_sigiotask(struct task_struct
*tsk
,
2290 struct fown_struct
*fown
,
2296 static inline int security_file_receive(struct file
*file
)
2301 static inline int security_dentry_open(struct file
*file
,
2302 const struct cred
*cred
)
2307 static inline int security_task_create(unsigned long clone_flags
)
2312 static inline void security_cred_alloc_blank(struct cred
*cred
, gfp_t gfp
)
2315 static inline void security_cred_free(struct cred
*cred
)
2318 static inline int security_prepare_creds(struct cred
*new,
2319 const struct cred
*old
,
2325 static inline void security_commit_creds(struct cred
*new,
2326 const struct cred
*old
)
2330 static inline void security_transfer_creds(struct cred
*new,
2331 const struct cred
*old
)
2335 static inline int security_kernel_act_as(struct cred
*cred
, u32 secid
)
2340 static inline int security_kernel_create_files_as(struct cred
*cred
,
2341 struct inode
*inode
)
2346 static inline int security_kernel_module_request(void)
2351 static inline int security_task_setuid(uid_t id0
, uid_t id1
, uid_t id2
,
2357 static inline int security_task_fix_setuid(struct cred
*new,
2358 const struct cred
*old
,
2361 return cap_task_fix_setuid(new, old
, flags
);
2364 static inline int security_task_setgid(gid_t id0
, gid_t id1
, gid_t id2
,
2370 static inline int security_task_setpgid(struct task_struct
*p
, pid_t pgid
)
2375 static inline int security_task_getpgid(struct task_struct
*p
)
2380 static inline int security_task_getsid(struct task_struct
*p
)
2385 static inline void security_task_getsecid(struct task_struct
*p
, u32
*secid
)
2390 static inline int security_task_setgroups(struct group_info
*group_info
)
2395 static inline int security_task_setnice(struct task_struct
*p
, int nice
)
2397 return cap_task_setnice(p
, nice
);
2400 static inline int security_task_setioprio(struct task_struct
*p
, int ioprio
)
2402 return cap_task_setioprio(p
, ioprio
);
2405 static inline int security_task_getioprio(struct task_struct
*p
)
2410 static inline int security_task_setrlimit(unsigned int resource
,
2411 struct rlimit
*new_rlim
)
2416 static inline int security_task_setscheduler(struct task_struct
*p
,
2418 struct sched_param
*lp
)
2420 return cap_task_setscheduler(p
, policy
, lp
);
2423 static inline int security_task_getscheduler(struct task_struct
*p
)
2428 static inline int security_task_movememory(struct task_struct
*p
)
2433 static inline int security_task_kill(struct task_struct
*p
,
2434 struct siginfo
*info
, int sig
,
2440 static inline int security_task_wait(struct task_struct
*p
)
2445 static inline int security_task_prctl(int option
, unsigned long arg2
,
2450 return cap_task_prctl(option
, arg2
, arg3
, arg3
, arg5
);
2453 static inline void security_task_to_inode(struct task_struct
*p
, struct inode
*inode
)
2456 static inline int security_ipc_permission(struct kern_ipc_perm
*ipcp
,
2462 static inline void security_ipc_getsecid(struct kern_ipc_perm
*ipcp
, u32
*secid
)
2467 static inline int security_msg_msg_alloc(struct msg_msg
*msg
)
2472 static inline void security_msg_msg_free(struct msg_msg
*msg
)
2475 static inline int security_msg_queue_alloc(struct msg_queue
*msq
)
2480 static inline void security_msg_queue_free(struct msg_queue
*msq
)
2483 static inline int security_msg_queue_associate(struct msg_queue
*msq
,
2489 static inline int security_msg_queue_msgctl(struct msg_queue
*msq
, int cmd
)
2494 static inline int security_msg_queue_msgsnd(struct msg_queue
*msq
,
2495 struct msg_msg
*msg
, int msqflg
)
2500 static inline int security_msg_queue_msgrcv(struct msg_queue
*msq
,
2501 struct msg_msg
*msg
,
2502 struct task_struct
*target
,
2503 long type
, int mode
)
2508 static inline int security_shm_alloc(struct shmid_kernel
*shp
)
2513 static inline void security_shm_free(struct shmid_kernel
*shp
)
2516 static inline int security_shm_associate(struct shmid_kernel
*shp
,
2522 static inline int security_shm_shmctl(struct shmid_kernel
*shp
, int cmd
)
2527 static inline int security_shm_shmat(struct shmid_kernel
*shp
,
2528 char __user
*shmaddr
, int shmflg
)
2533 static inline int security_sem_alloc(struct sem_array
*sma
)
2538 static inline void security_sem_free(struct sem_array
*sma
)
2541 static inline int security_sem_associate(struct sem_array
*sma
, int semflg
)
2546 static inline int security_sem_semctl(struct sem_array
*sma
, int cmd
)
2551 static inline int security_sem_semop(struct sem_array
*sma
,
2552 struct sembuf
*sops
, unsigned nsops
,
2558 static inline void security_d_instantiate(struct dentry
*dentry
, struct inode
*inode
)
2561 static inline int security_getprocattr(struct task_struct
*p
, char *name
, char **value
)
2566 static inline int security_setprocattr(struct task_struct
*p
, char *name
, void *value
, size_t size
)
2571 static inline int security_netlink_send(struct sock
*sk
, struct sk_buff
*skb
)
2573 return cap_netlink_send(sk
, skb
);
2576 static inline int security_netlink_recv(struct sk_buff
*skb
, int cap
)
2578 return cap_netlink_recv(skb
, cap
);
2581 static inline int security_secid_to_secctx(u32 secid
, char **secdata
, u32
*seclen
)
2586 static inline int security_secctx_to_secid(const char *secdata
,
2593 static inline void security_release_secctx(char *secdata
, u32 seclen
)
2596 #endif /* CONFIG_SECURITY */
2598 #ifdef CONFIG_SECURITY_NETWORK
2600 int security_unix_stream_connect(struct socket
*sock
, struct socket
*other
,
2601 struct sock
*newsk
);
2602 int security_unix_may_send(struct socket
*sock
, struct socket
*other
);
2603 int security_socket_create(int family
, int type
, int protocol
, int kern
);
2604 int security_socket_post_create(struct socket
*sock
, int family
,
2605 int type
, int protocol
, int kern
);
2606 int security_socket_bind(struct socket
*sock
, struct sockaddr
*address
, int addrlen
);
2607 int security_socket_connect(struct socket
*sock
, struct sockaddr
*address
, int addrlen
);
2608 int security_socket_listen(struct socket
*sock
, int backlog
);
2609 int security_socket_accept(struct socket
*sock
, struct socket
*newsock
);
2610 int security_socket_sendmsg(struct socket
*sock
, struct msghdr
*msg
, int size
);
2611 int security_socket_recvmsg(struct socket
*sock
, struct msghdr
*msg
,
2612 int size
, int flags
);
2613 int security_socket_getsockname(struct socket
*sock
);
2614 int security_socket_getpeername(struct socket
*sock
);
2615 int security_socket_getsockopt(struct socket
*sock
, int level
, int optname
);
2616 int security_socket_setsockopt(struct socket
*sock
, int level
, int optname
);
2617 int security_socket_shutdown(struct socket
*sock
, int how
);
2618 int security_sock_rcv_skb(struct sock
*sk
, struct sk_buff
*skb
);
2619 int security_socket_getpeersec_stream(struct socket
*sock
, char __user
*optval
,
2620 int __user
*optlen
, unsigned len
);
2621 int security_socket_getpeersec_dgram(struct socket
*sock
, struct sk_buff
*skb
, u32
*secid
);
2622 int security_sk_alloc(struct sock
*sk
, int family
, gfp_t priority
);
2623 void security_sk_free(struct sock
*sk
);
2624 void security_sk_clone(const struct sock
*sk
, struct sock
*newsk
);
2625 void security_sk_classify_flow(struct sock
*sk
, struct flowi
*fl
);
2626 void security_req_classify_flow(const struct request_sock
*req
, struct flowi
*fl
);
2627 void security_sock_graft(struct sock
*sk
, struct socket
*parent
);
2628 int security_inet_conn_request(struct sock
*sk
,
2629 struct sk_buff
*skb
, struct request_sock
*req
);
2630 void security_inet_csk_clone(struct sock
*newsk
,
2631 const struct request_sock
*req
);
2632 void security_inet_conn_established(struct sock
*sk
,
2633 struct sk_buff
*skb
);
2634 int security_tun_dev_create(void);
2635 void security_tun_dev_post_create(struct sock
*sk
);
2636 int security_tun_dev_attach(struct sock
*sk
);
2638 #else /* CONFIG_SECURITY_NETWORK */
2639 static inline int security_unix_stream_connect(struct socket
*sock
,
2640 struct socket
*other
,
2646 static inline int security_unix_may_send(struct socket
*sock
,
2647 struct socket
*other
)
2652 static inline int security_socket_create(int family
, int type
,
2653 int protocol
, int kern
)
2658 static inline int security_socket_post_create(struct socket
*sock
,
2661 int protocol
, int kern
)
2666 static inline int security_socket_bind(struct socket
*sock
,
2667 struct sockaddr
*address
,
2673 static inline int security_socket_connect(struct socket
*sock
,
2674 struct sockaddr
*address
,
2680 static inline int security_socket_listen(struct socket
*sock
, int backlog
)
2685 static inline int security_socket_accept(struct socket
*sock
,
2686 struct socket
*newsock
)
2691 static inline int security_socket_sendmsg(struct socket
*sock
,
2692 struct msghdr
*msg
, int size
)
2697 static inline int security_socket_recvmsg(struct socket
*sock
,
2698 struct msghdr
*msg
, int size
,
2704 static inline int security_socket_getsockname(struct socket
*sock
)
2709 static inline int security_socket_getpeername(struct socket
*sock
)
2714 static inline int security_socket_getsockopt(struct socket
*sock
,
2715 int level
, int optname
)
2720 static inline int security_socket_setsockopt(struct socket
*sock
,
2721 int level
, int optname
)
2726 static inline int security_socket_shutdown(struct socket
*sock
, int how
)
2730 static inline int security_sock_rcv_skb(struct sock
*sk
,
2731 struct sk_buff
*skb
)
2736 static inline int security_socket_getpeersec_stream(struct socket
*sock
, char __user
*optval
,
2737 int __user
*optlen
, unsigned len
)
2739 return -ENOPROTOOPT
;
2742 static inline int security_socket_getpeersec_dgram(struct socket
*sock
, struct sk_buff
*skb
, u32
*secid
)
2744 return -ENOPROTOOPT
;
2747 static inline int security_sk_alloc(struct sock
*sk
, int family
, gfp_t priority
)
2752 static inline void security_sk_free(struct sock
*sk
)
2756 static inline void security_sk_clone(const struct sock
*sk
, struct sock
*newsk
)
2760 static inline void security_sk_classify_flow(struct sock
*sk
, struct flowi
*fl
)
2764 static inline void security_req_classify_flow(const struct request_sock
*req
, struct flowi
*fl
)
2768 static inline void security_sock_graft(struct sock
*sk
, struct socket
*parent
)
2772 static inline int security_inet_conn_request(struct sock
*sk
,
2773 struct sk_buff
*skb
, struct request_sock
*req
)
2778 static inline void security_inet_csk_clone(struct sock
*newsk
,
2779 const struct request_sock
*req
)
2783 static inline void security_inet_conn_established(struct sock
*sk
,
2784 struct sk_buff
*skb
)
2788 static inline int security_tun_dev_create(void)
2793 static inline void security_tun_dev_post_create(struct sock
*sk
)
2797 static inline int security_tun_dev_attach(struct sock
*sk
)
2801 #endif /* CONFIG_SECURITY_NETWORK */
2803 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2805 int security_xfrm_policy_alloc(struct xfrm_sec_ctx
**ctxp
, struct xfrm_user_sec_ctx
*sec_ctx
);
2806 int security_xfrm_policy_clone(struct xfrm_sec_ctx
*old_ctx
, struct xfrm_sec_ctx
**new_ctxp
);
2807 void security_xfrm_policy_free(struct xfrm_sec_ctx
*ctx
);
2808 int security_xfrm_policy_delete(struct xfrm_sec_ctx
*ctx
);
2809 int security_xfrm_state_alloc(struct xfrm_state
*x
, struct xfrm_user_sec_ctx
*sec_ctx
);
2810 int security_xfrm_state_alloc_acquire(struct xfrm_state
*x
,
2811 struct xfrm_sec_ctx
*polsec
, u32 secid
);
2812 int security_xfrm_state_delete(struct xfrm_state
*x
);
2813 void security_xfrm_state_free(struct xfrm_state
*x
);
2814 int security_xfrm_policy_lookup(struct xfrm_sec_ctx
*ctx
, u32 fl_secid
, u8 dir
);
2815 int security_xfrm_state_pol_flow_match(struct xfrm_state
*x
,
2816 struct xfrm_policy
*xp
, struct flowi
*fl
);
2817 int security_xfrm_decode_session(struct sk_buff
*skb
, u32
*secid
);
2818 void security_skb_classify_flow(struct sk_buff
*skb
, struct flowi
*fl
);
2820 #else /* CONFIG_SECURITY_NETWORK_XFRM */
2822 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx
**ctxp
, struct xfrm_user_sec_ctx
*sec_ctx
)
2827 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx
*old
, struct xfrm_sec_ctx
**new_ctxp
)
2832 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx
*ctx
)
2836 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx
*ctx
)
2841 static inline int security_xfrm_state_alloc(struct xfrm_state
*x
,
2842 struct xfrm_user_sec_ctx
*sec_ctx
)
2847 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state
*x
,
2848 struct xfrm_sec_ctx
*polsec
, u32 secid
)
2853 static inline void security_xfrm_state_free(struct xfrm_state
*x
)
2857 static inline int security_xfrm_state_delete(struct xfrm_state
*x
)
2862 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx
*ctx
, u32 fl_secid
, u8 dir
)
2867 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state
*x
,
2868 struct xfrm_policy
*xp
, struct flowi
*fl
)
2873 static inline int security_xfrm_decode_session(struct sk_buff
*skb
, u32
*secid
)
2878 static inline void security_skb_classify_flow(struct sk_buff
*skb
, struct flowi
*fl
)
2882 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2884 #ifdef CONFIG_SECURITY_PATH
2885 int security_path_unlink(struct path
*dir
, struct dentry
*dentry
);
2886 int security_path_mkdir(struct path
*dir
, struct dentry
*dentry
, int mode
);
2887 int security_path_rmdir(struct path
*dir
, struct dentry
*dentry
);
2888 int security_path_mknod(struct path
*dir
, struct dentry
*dentry
, int mode
,
2890 int security_path_truncate(struct path
*path
, loff_t length
,
2891 unsigned int time_attrs
);
2892 int security_path_symlink(struct path
*dir
, struct dentry
*dentry
,
2893 const char *old_name
);
2894 int security_path_link(struct dentry
*old_dentry
, struct path
*new_dir
,
2895 struct dentry
*new_dentry
);
2896 int security_path_rename(struct path
*old_dir
, struct dentry
*old_dentry
,
2897 struct path
*new_dir
, struct dentry
*new_dentry
);
2898 #else /* CONFIG_SECURITY_PATH */
2899 static inline int security_path_unlink(struct path
*dir
, struct dentry
*dentry
)
2904 static inline int security_path_mkdir(struct path
*dir
, struct dentry
*dentry
,
2910 static inline int security_path_rmdir(struct path
*dir
, struct dentry
*dentry
)
2915 static inline int security_path_mknod(struct path
*dir
, struct dentry
*dentry
,
2916 int mode
, unsigned int dev
)
2921 static inline int security_path_truncate(struct path
*path
, loff_t length
,
2922 unsigned int time_attrs
)
2927 static inline int security_path_symlink(struct path
*dir
, struct dentry
*dentry
,
2928 const char *old_name
)
2933 static inline int security_path_link(struct dentry
*old_dentry
,
2934 struct path
*new_dir
,
2935 struct dentry
*new_dentry
)
2940 static inline int security_path_rename(struct path
*old_dir
,
2941 struct dentry
*old_dentry
,
2942 struct path
*new_dir
,
2943 struct dentry
*new_dentry
)
2947 #endif /* CONFIG_SECURITY_PATH */
2950 #ifdef CONFIG_SECURITY
2952 int security_key_alloc(struct key
*key
, const struct cred
*cred
, unsigned long flags
);
2953 void security_key_free(struct key
*key
);
2954 int security_key_permission(key_ref_t key_ref
,
2955 const struct cred
*cred
, key_perm_t perm
);
2956 int security_key_getsecurity(struct key
*key
, char **_buffer
);
2957 int security_key_session_to_parent(const struct cred
*cred
,
2958 const struct cred
*parent_cred
,
2963 static inline int security_key_alloc(struct key
*key
,
2964 const struct cred
*cred
,
2965 unsigned long flags
)
2970 static inline void security_key_free(struct key
*key
)
2974 static inline int security_key_permission(key_ref_t key_ref
,
2975 const struct cred
*cred
,
2981 static inline int security_key_getsecurity(struct key
*key
, char **_buffer
)
2987 static inline int security_key_session_to_parent(const struct cred
*cred
,
2988 const struct cred
*parent_cred
,
2992 #endif /* CONFIG_KEYS */
2995 #ifdef CONFIG_SECURITY
2996 int security_audit_rule_init(u32 field
, u32 op
, char *rulestr
, void **lsmrule
);
2997 int security_audit_rule_known(struct audit_krule
*krule
);
2998 int security_audit_rule_match(u32 secid
, u32 field
, u32 op
, void *lsmrule
,
2999 struct audit_context
*actx
);
3000 void security_audit_rule_free(void *lsmrule
);
3004 static inline int security_audit_rule_init(u32 field
, u32 op
, char *rulestr
,
3010 static inline int security_audit_rule_known(struct audit_krule
*krule
)
3015 static inline int security_audit_rule_match(u32 secid
, u32 field
, u32 op
,
3016 void *lsmrule
, struct audit_context
*actx
)
3021 static inline void security_audit_rule_free(void *lsmrule
)
3024 #endif /* CONFIG_SECURITY */
3025 #endif /* CONFIG_AUDIT */
3027 #ifdef CONFIG_SECURITYFS
3029 extern struct dentry
*securityfs_create_file(const char *name
, mode_t mode
,
3030 struct dentry
*parent
, void *data
,
3031 const struct file_operations
*fops
);
3032 extern struct dentry
*securityfs_create_dir(const char *name
, struct dentry
*parent
);
3033 extern void securityfs_remove(struct dentry
*dentry
);
3035 #else /* CONFIG_SECURITYFS */
3037 static inline struct dentry
*securityfs_create_dir(const char *name
,
3038 struct dentry
*parent
)
3040 return ERR_PTR(-ENODEV
);
3043 static inline struct dentry
*securityfs_create_file(const char *name
,
3045 struct dentry
*parent
,
3047 const struct file_operations
*fops
)
3049 return ERR_PTR(-ENODEV
);
3052 static inline void securityfs_remove(struct dentry
*dentry
)
3057 #ifdef CONFIG_SECURITY
3059 static inline char *alloc_secdata(void)
3061 return (char *)get_zeroed_page(GFP_KERNEL
);
3064 static inline void free_secdata(void *secdata
)
3066 free_page((unsigned long)secdata
);
3071 static inline char *alloc_secdata(void)
3076 static inline void free_secdata(void *secdata
)
3078 #endif /* CONFIG_SECURITY */
3080 #endif /* ! __LINUX_SECURITY_H */