Line data Source code
1 : /*
2 : * Linux Security plug
3 : *
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)
9 : *
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.
14 : *
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.
19 : *
20 : */
21 :
22 : #ifndef __LINUX_SECURITY_H
23 : #define __LINUX_SECURITY_H
24 :
25 : #include <linux/fs.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>
37 : #include <net/flow.h>
38 :
39 : /* Maximum number of letters for an LSM name string */
40 : #define SECURITY_NAME_MAX 10
41 :
42 : /* If capable should audit the security request */
43 : #define SECURITY_CAP_NOAUDIT 0
44 : #define SECURITY_CAP_AUDIT 1
45 :
46 : struct ctl_table;
47 : struct audit_krule;
48 :
49 : /*
50 : * These functions are in security/capability.c and are used
51 : * as the default capabilities functions
52 : */
53 : extern int cap_capable(struct task_struct *tsk, const struct cred *cred,
54 : int cap, int audit);
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);
81 :
82 : struct msghdr;
83 : struct sk_buff;
84 : struct sock;
85 : struct sockaddr;
86 : struct socket;
87 : struct flowi;
88 : struct dst_entry;
89 : struct xfrm_selector;
90 : struct xfrm_policy;
91 : struct xfrm_state;
92 : struct xfrm_user_sec_ctx;
93 : struct seq_file;
94 :
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);
97 :
98 : #ifdef CONFIG_MMU
99 : extern unsigned long mmap_min_addr;
100 : extern unsigned long dac_mmap_min_addr;
101 : #else
102 : #define dac_mmap_min_addr 0UL
103 : #endif
104 :
105 : /*
106 : * Values used in the task_security_ops calls
107 : */
108 : /* setuid or setgid, id0 == uid or gid */
109 : #define LSM_SETID_ID 1
110 :
111 : /* setreuid or setregid, id0 == real, id1 == eff */
112 : #define LSM_SETID_RE 2
113 :
114 : /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
115 : #define LSM_SETID_RES 4
116 :
117 : /* setfsuid or setfsgid, id0 == fsuid or fsgid */
118 : #define LSM_SETID_FS 8
119 :
120 : /* forward declares to avoid warnings */
121 : struct sched_param;
122 : struct request_sock;
123 :
124 : /* bprm->unsafe reasons */
125 : #define LSM_UNSAFE_SHARE 1
126 : #define LSM_UNSAFE_PTRACE 2
127 : #define LSM_UNSAFE_PTRACE_CAP 4
128 :
129 : #ifdef CONFIG_MMU
130 : /*
131 : * If a hint addr is less than mmap_min_addr change hint to be as
132 : * low as possible but still greater than mmap_min_addr
133 : */
134 : static inline unsigned long round_hint_to_min(unsigned long hint)
135 : {
136 : hint &= PAGE_MASK;
137 : if (((void *)hint != NULL) &&
138 : (hint < mmap_min_addr))
139 : return PAGE_ALIGN(mmap_min_addr);
140 : return hint;
141 : }
142 : extern int mmap_min_addr_handler(struct ctl_table *table, int write,
143 : void __user *buffer, size_t *lenp, loff_t *ppos);
144 : #endif
145 :
146 : #ifdef CONFIG_SECURITY
147 :
148 : struct security_mnt_opts {
149 : char **mnt_opts;
150 : int *mnt_opts_flags;
151 : int num_mnt_opts;
152 : };
153 :
154 : static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
155 : {
156 : opts->mnt_opts = NULL;
157 : opts->mnt_opts_flags = NULL;
158 : opts->num_mnt_opts = 0;
159 : }
160 :
161 : static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
162 : {
163 : int i;
164 : if (opts->mnt_opts)
165 : for (i = 0; i < opts->num_mnt_opts; i++)
166 : kfree(opts->mnt_opts[i]);
167 : kfree(opts->mnt_opts);
168 : opts->mnt_opts = NULL;
169 : kfree(opts->mnt_opts_flags);
170 : opts->mnt_opts_flags = NULL;
171 : opts->num_mnt_opts = 0;
172 : }
173 :
174 : /**
175 : * struct security_operations - main security structure
176 : *
177 : * Security module identifier.
178 : *
179 : * @name:
180 : * A string that acts as a unique identifeir for the LSM with max number
181 : * of characters = SECURITY_NAME_MAX.
182 : *
183 : * Security hooks for program execution operations.
184 : *
185 : * @bprm_set_creds:
186 : * Save security information in the bprm->security field, typically based
187 : * on information about the bprm->file, for later use by the apply_creds
188 : * hook. This hook may also optionally check permissions (e.g. for
189 : * transitions between security domains).
190 : * This hook may be called multiple times during a single execve, e.g. for
191 : * interpreters. The hook can tell whether it has already been called by
192 : * checking to see if @bprm->security is non-NULL. If so, then the hook
193 : * may decide either to retain the security information saved earlier or
194 : * to replace it.
195 : * @bprm contains the linux_binprm structure.
196 : * Return 0 if the hook is successful and permission is granted.
197 : * @bprm_check_security:
198 : * This hook mediates the point when a search for a binary handler will
199 : * begin. It allows a check the @bprm->security value which is set in the
200 : * preceding set_creds call. The primary difference from set_creds is
201 : * that the argv list and envp list are reliably available in @bprm. This
202 : * hook may be called multiple times during a single execve; and in each
203 : * pass set_creds is called first.
204 : * @bprm contains the linux_binprm structure.
205 : * Return 0 if the hook is successful and permission is granted.
206 : * @bprm_committing_creds:
207 : * Prepare to install the new security attributes of a process being
208 : * transformed by an execve operation, based on the old credentials
209 : * pointed to by @current->cred and the information set in @bprm->cred by
210 : * the bprm_set_creds hook. @bprm points to the linux_binprm structure.
211 : * This hook is a good place to perform state changes on the process such
212 : * as closing open file descriptors to which access will no longer be
213 : * granted when the attributes are changed. This is called immediately
214 : * before commit_creds().
215 : * @bprm_committed_creds:
216 : * Tidy up after the installation of the new security attributes of a
217 : * process being transformed by an execve operation. The new credentials
218 : * have, by this point, been set to @current->cred. @bprm points to the
219 : * linux_binprm structure. This hook is a good place to perform state
220 : * changes on the process such as clearing out non-inheritable signal
221 : * state. This is called immediately after commit_creds().
222 : * @bprm_secureexec:
223 : * Return a boolean value (0 or 1) indicating whether a "secure exec"
224 : * is required. The flag is passed in the auxiliary table
225 : * on the initial stack to the ELF interpreter to indicate whether libc
226 : * should enable secure mode.
227 : * @bprm contains the linux_binprm structure.
228 : *
229 : * Security hooks for filesystem operations.
230 : *
231 : * @sb_alloc_security:
232 : * Allocate and attach a security structure to the sb->s_security field.
233 : * The s_security field is initialized to NULL when the structure is
234 : * allocated.
235 : * @sb contains the super_block structure to be modified.
236 : * Return 0 if operation was successful.
237 : * @sb_free_security:
238 : * Deallocate and clear the sb->s_security field.
239 : * @sb contains the super_block structure to be modified.
240 : * @sb_statfs:
241 : * Check permission before obtaining filesystem statistics for the @mnt
242 : * mountpoint.
243 : * @dentry is a handle on the superblock for the filesystem.
244 : * Return 0 if permission is granted.
245 : * @sb_mount:
246 : * Check permission before an object specified by @dev_name is mounted on
247 : * the mount point named by @nd. For an ordinary mount, @dev_name
248 : * identifies a device if the file system type requires a device. For a
249 : * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a
250 : * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
251 : * pathname of the object being mounted.
252 : * @dev_name contains the name for object being mounted.
253 : * @path contains the path for mount point object.
254 : * @type contains the filesystem type.
255 : * @flags contains the mount flags.
256 : * @data contains the filesystem-specific data.
257 : * Return 0 if permission is granted.
258 : * @sb_copy_data:
259 : * Allow mount option data to be copied prior to parsing by the filesystem,
260 : * so that the security module can extract security-specific mount
261 : * options cleanly (a filesystem may modify the data e.g. with strsep()).
262 : * This also allows the original mount data to be stripped of security-
263 : * specific options to avoid having to make filesystems aware of them.
264 : * @type the type of filesystem being mounted.
265 : * @orig the original mount data copied from userspace.
266 : * @copy copied data which will be passed to the security module.
267 : * Returns 0 if the copy was successful.
268 : * @sb_check_sb:
269 : * Check permission before the device with superblock @mnt->sb is mounted
270 : * on the mount point named by @nd.
271 : * @mnt contains the vfsmount for device being mounted.
272 : * @path contains the path for the mount point.
273 : * Return 0 if permission is granted.
274 : * @sb_umount:
275 : * Check permission before the @mnt file system is unmounted.
276 : * @mnt contains the mounted file system.
277 : * @flags contains the unmount flags, e.g. MNT_FORCE.
278 : * Return 0 if permission is granted.
279 : * @sb_umount_close:
280 : * Close any files in the @mnt mounted filesystem that are held open by
281 : * the security module. This hook is called during an umount operation
282 : * prior to checking whether the filesystem is still busy.
283 : * @mnt contains the mounted filesystem.
284 : * @sb_umount_busy:
285 : * Handle a failed umount of the @mnt mounted filesystem, e.g. re-opening
286 : * any files that were closed by umount_close. This hook is called during
287 : * an umount operation if the umount fails after a call to the
288 : * umount_close hook.
289 : * @mnt contains the mounted filesystem.
290 : * @sb_post_remount:
291 : * Update the security module's state when a filesystem is remounted.
292 : * This hook is only called if the remount was successful.
293 : * @mnt contains the mounted file system.
294 : * @flags contains the new filesystem flags.
295 : * @data contains the filesystem-specific data.
296 : * @sb_post_addmount:
297 : * Update the security module's state when a filesystem is mounted.
298 : * This hook is called any time a mount is successfully grafetd to
299 : * the tree.
300 : * @mnt contains the mounted filesystem.
301 : * @mountpoint contains the path for the mount point.
302 : * @sb_pivotroot:
303 : * Check permission before pivoting the root filesystem.
304 : * @old_path contains the path for the new location of the current root (put_old).
305 : * @new_path contains the path for the new root (new_root).
306 : * Return 0 if permission is granted.
307 : * @sb_post_pivotroot:
308 : * Update module state after a successful pivot.
309 : * @old_path contains the path for the old root.
310 : * @new_path contains the path for the new root.
311 : * @sb_set_mnt_opts:
312 : * Set the security relevant mount options used for a superblock
313 : * @sb the superblock to set security mount options for
314 : * @opts binary data structure containing all lsm mount data
315 : * @sb_clone_mnt_opts:
316 : * Copy all security options from a given superblock to another
317 : * @oldsb old superblock which contain information to clone
318 : * @newsb new superblock which needs filled in
319 : * @sb_parse_opts_str:
320 : * Parse a string of security data filling in the opts structure
321 : * @options string containing all mount options known by the LSM
322 : * @opts binary data structure usable by the LSM
323 : *
324 : * Security hooks for inode operations.
325 : *
326 : * @inode_alloc_security:
327 : * Allocate and attach a security structure to @inode->i_security. The
328 : * i_security field is initialized to NULL when the inode structure is
329 : * allocated.
330 : * @inode contains the inode structure.
331 : * Return 0 if operation was successful.
332 : * @inode_free_security:
333 : * @inode contains the inode structure.
334 : * Deallocate the inode security structure and set @inode->i_security to
335 : * NULL.
336 : * @inode_init_security:
337 : * Obtain the security attribute name suffix and value to set on a newly
338 : * created inode and set up the incore security field for the new inode.
339 : * This hook is called by the fs code as part of the inode creation
340 : * transaction and provides for atomic labeling of the inode, unlike
341 : * the post_create/mkdir/... hooks called by the VFS. The hook function
342 : * is expected to allocate the name and value via kmalloc, with the caller
343 : * being responsible for calling kfree after using them.
344 : * If the security module does not use security attributes or does
345 : * not wish to put a security attribute on this particular inode,
346 : * then it should return -EOPNOTSUPP to skip this processing.
347 : * @inode contains the inode structure of the newly created inode.
348 : * @dir contains the inode structure of the parent directory.
349 : * @name will be set to the allocated name suffix (e.g. selinux).
350 : * @value will be set to the allocated attribute value.
351 : * @len will be set to the length of the value.
352 : * Returns 0 if @name and @value have been successfully set,
353 : * -EOPNOTSUPP if no security attribute is needed, or
354 : * -ENOMEM on memory allocation failure.
355 : * @inode_create:
356 : * Check permission to create a regular file.
357 : * @dir contains inode structure of the parent of the new file.
358 : * @dentry contains the dentry structure for the file to be created.
359 : * @mode contains the file mode of the file to be created.
360 : * Return 0 if permission is granted.
361 : * @inode_link:
362 : * Check permission before creating a new hard link to a file.
363 : * @old_dentry contains the dentry structure for an existing link to the file.
364 : * @dir contains the inode structure of the parent directory of the new link.
365 : * @new_dentry contains the dentry structure for the new link.
366 : * Return 0 if permission is granted.
367 : * @path_link:
368 : * Check permission before creating a new hard link to a file.
369 : * @old_dentry contains the dentry structure for an existing link
370 : * to the file.
371 : * @new_dir contains the path structure of the parent directory of
372 : * the new link.
373 : * @new_dentry contains the dentry structure for the new link.
374 : * Return 0 if permission is granted.
375 : * @inode_unlink:
376 : * Check the permission to remove a hard link to a file.
377 : * @dir contains the inode structure of parent directory of the file.
378 : * @dentry contains the dentry structure for file to be unlinked.
379 : * Return 0 if permission is granted.
380 : * @path_unlink:
381 : * Check the permission to remove a hard link to a file.
382 : * @dir contains the path structure of parent directory of the file.
383 : * @dentry contains the dentry structure for file to be unlinked.
384 : * Return 0 if permission is granted.
385 : * @inode_symlink:
386 : * Check the permission to create a symbolic link to a file.
387 : * @dir contains the inode structure of parent directory of the symbolic link.
388 : * @dentry contains the dentry structure of the symbolic link.
389 : * @old_name contains the pathname of file.
390 : * Return 0 if permission is granted.
391 : * @path_symlink:
392 : * Check the permission to create a symbolic link to a file.
393 : * @dir contains the path structure of parent directory of
394 : * the symbolic link.
395 : * @dentry contains the dentry structure of the symbolic link.
396 : * @old_name contains the pathname of file.
397 : * Return 0 if permission is granted.
398 : * @inode_mkdir:
399 : * Check permissions to create a new directory in the existing directory
400 : * associated with inode strcture @dir.
401 : * @dir containst the inode structure of parent of the directory to be created.
402 : * @dentry contains the dentry structure of new directory.
403 : * @mode contains the mode of new directory.
404 : * Return 0 if permission is granted.
405 : * @path_mkdir:
406 : * Check permissions to create a new directory in the existing directory
407 : * associated with path strcture @path.
408 : * @dir containst the path structure of parent of the directory
409 : * to be created.
410 : * @dentry contains the dentry structure of new directory.
411 : * @mode contains the mode of new directory.
412 : * Return 0 if permission is granted.
413 : * @inode_rmdir:
414 : * Check the permission to remove a directory.
415 : * @dir contains the inode structure of parent of the directory to be removed.
416 : * @dentry contains the dentry structure of directory to be removed.
417 : * Return 0 if permission is granted.
418 : * @path_rmdir:
419 : * Check the permission to remove a directory.
420 : * @dir contains the path structure of parent of the directory to be
421 : * removed.
422 : * @dentry contains the dentry structure of directory to be removed.
423 : * Return 0 if permission is granted.
424 : * @inode_mknod:
425 : * Check permissions when creating a special file (or a socket or a fifo
426 : * file created via the mknod system call). Note that if mknod operation
427 : * is being done for a regular file, then the create hook will be called
428 : * and not this hook.
429 : * @dir contains the inode structure of parent of the new file.
430 : * @dentry contains the dentry structure of the new file.
431 : * @mode contains the mode of the new file.
432 : * @dev contains the device number.
433 : * Return 0 if permission is granted.
434 : * @path_mknod:
435 : * Check permissions when creating a file. Note that this hook is called
436 : * even if mknod operation is being done for a regular file.
437 : * @dir contains the path structure of parent of the new file.
438 : * @dentry contains the dentry structure of the new file.
439 : * @mode contains the mode of the new file.
440 : * @dev contains the undecoded device number. Use new_decode_dev() to get
441 : * the decoded device number.
442 : * Return 0 if permission is granted.
443 : * @inode_rename:
444 : * Check for permission to rename a file or directory.
445 : * @old_dir contains the inode structure for parent of the old link.
446 : * @old_dentry contains the dentry structure of the old link.
447 : * @new_dir contains the inode structure for parent of the new link.
448 : * @new_dentry contains the dentry structure of the new link.
449 : * Return 0 if permission is granted.
450 : * @path_rename:
451 : * Check for permission to rename a file or directory.
452 : * @old_dir contains the path structure for parent of the old link.
453 : * @old_dentry contains the dentry structure of the old link.
454 : * @new_dir contains the path structure for parent of the new link.
455 : * @new_dentry contains the dentry structure of the new link.
456 : * Return 0 if permission is granted.
457 : * @path_chmod:
458 : * Check for permission to change DAC's permission of a file or directory.
459 : * @dentry contains the dentry structure.
460 : * @mnt contains the vfsmnt structure.
461 : * @mode contains DAC's mode.
462 : * Return 0 if permission is granted.
463 : * @path_chown:
464 : * Check for permission to change owner/group of a file or directory.
465 : * @path contains the path structure.
466 : * @uid contains new owner's ID.
467 : * @gid contains new group's ID.
468 : * Return 0 if permission is granted.
469 : * @path_chroot:
470 : * Check for permission to change root directory.
471 : * @path contains the path structure.
472 : * Return 0 if permission is granted.
473 : * @inode_readlink:
474 : * Check the permission to read the symbolic link.
475 : * @dentry contains the dentry structure for the file link.
476 : * Return 0 if permission is granted.
477 : * @inode_follow_link:
478 : * Check permission to follow a symbolic link when looking up a pathname.
479 : * @dentry contains the dentry structure for the link.
480 : * @nd contains the nameidata structure for the parent directory.
481 : * Return 0 if permission is granted.
482 : * @inode_permission:
483 : * Check permission before accessing an inode. This hook is called by the
484 : * existing Linux permission function, so a security module can use it to
485 : * provide additional checking for existing Linux permission checks.
486 : * Notice that this hook is called when a file is opened (as well as many
487 : * other operations), whereas the file_security_ops permission hook is
488 : * called when the actual read/write operations are performed.
489 : * @inode contains the inode structure to check.
490 : * @mask contains the permission mask.
491 : * @nd contains the nameidata (may be NULL).
492 : * Return 0 if permission is granted.
493 : * @inode_setattr:
494 : * Check permission before setting file attributes. Note that the kernel
495 : * call to notify_change is performed from several locations, whenever
496 : * file attributes change (such as when a file is truncated, chown/chmod
497 : * operations, transferring disk quotas, etc).
498 : * @dentry contains the dentry structure for the file.
499 : * @attr is the iattr structure containing the new file attributes.
500 : * Return 0 if permission is granted.
501 : * @path_truncate:
502 : * Check permission before truncating a file.
503 : * @path contains the path structure for the file.
504 : * @length is the new length of the file.
505 : * @time_attrs is the flags passed to do_truncate().
506 : * Return 0 if permission is granted.
507 : * @inode_getattr:
508 : * Check permission before obtaining file attributes.
509 : * @mnt is the vfsmount where the dentry was looked up
510 : * @dentry contains the dentry structure for the file.
511 : * Return 0 if permission is granted.
512 : * @inode_delete:
513 : * @inode contains the inode structure for deleted inode.
514 : * This hook is called when a deleted inode is released (i.e. an inode
515 : * with no hard links has its use count drop to zero). A security module
516 : * can use this hook to release any persistent label associated with the
517 : * inode.
518 : * @inode_setxattr:
519 : * Check permission before setting the extended attributes
520 : * @value identified by @name for @dentry.
521 : * Return 0 if permission is granted.
522 : * @inode_post_setxattr:
523 : * Update inode security field after successful setxattr operation.
524 : * @value identified by @name for @dentry.
525 : * @inode_getxattr:
526 : * Check permission before obtaining the extended attributes
527 : * identified by @name for @dentry.
528 : * Return 0 if permission is granted.
529 : * @inode_listxattr:
530 : * Check permission before obtaining the list of extended attribute
531 : * names for @dentry.
532 : * Return 0 if permission is granted.
533 : * @inode_removexattr:
534 : * Check permission before removing the extended attribute
535 : * identified by @name for @dentry.
536 : * Return 0 if permission is granted.
537 : * @inode_getsecurity:
538 : * Retrieve a copy of the extended attribute representation of the
539 : * security label associated with @name for @inode via @buffer. Note that
540 : * @name is the remainder of the attribute name after the security prefix
541 : * has been removed. @alloc is used to specify of the call should return a
542 : * value via the buffer or just the value length Return size of buffer on
543 : * success.
544 : * @inode_setsecurity:
545 : * Set the security label associated with @name for @inode from the
546 : * extended attribute value @value. @size indicates the size of the
547 : * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
548 : * Note that @name is the remainder of the attribute name after the
549 : * security. prefix has been removed.
550 : * Return 0 on success.
551 : * @inode_listsecurity:
552 : * Copy the extended attribute names for the security labels
553 : * associated with @inode into @buffer. The maximum size of @buffer
554 : * is specified by @buffer_size. @buffer may be NULL to request
555 : * the size of the buffer required.
556 : * Returns number of bytes used/required on success.
557 : * @inode_need_killpriv:
558 : * Called when an inode has been changed.
559 : * @dentry is the dentry being changed.
560 : * Return <0 on error to abort the inode change operation.
561 : * Return 0 if inode_killpriv does not need to be called.
562 : * Return >0 if inode_killpriv does need to be called.
563 : * @inode_killpriv:
564 : * The setuid bit is being removed. Remove similar security labels.
565 : * Called with the dentry->d_inode->i_mutex held.
566 : * @dentry is the dentry being changed.
567 : * Return 0 on success. If error is returned, then the operation
568 : * causing setuid bit removal is failed.
569 : * @inode_getsecid:
570 : * Get the secid associated with the node.
571 : * @inode contains a pointer to the inode.
572 : * @secid contains a pointer to the location where result will be saved.
573 : * In case of failure, @secid will be set to zero.
574 : *
575 : * Security hooks for file operations
576 : *
577 : * @file_permission:
578 : * Check file permissions before accessing an open file. This hook is
579 : * called by various operations that read or write files. A security
580 : * module can use this hook to perform additional checking on these
581 : * operations, e.g. to revalidate permissions on use to support privilege
582 : * bracketing or policy changes. Notice that this hook is used when the
583 : * actual read/write operations are performed, whereas the
584 : * inode_security_ops hook is called when a file is opened (as well as
585 : * many other operations).
586 : * Caveat: Although this hook can be used to revalidate permissions for
587 : * various system call operations that read or write files, it does not
588 : * address the revalidation of permissions for memory-mapped files.
589 : * Security modules must handle this separately if they need such
590 : * revalidation.
591 : * @file contains the file structure being accessed.
592 : * @mask contains the requested permissions.
593 : * Return 0 if permission is granted.
594 : * @file_alloc_security:
595 : * Allocate and attach a security structure to the file->f_security field.
596 : * The security field is initialized to NULL when the structure is first
597 : * created.
598 : * @file contains the file structure to secure.
599 : * Return 0 if the hook is successful and permission is granted.
600 : * @file_free_security:
601 : * Deallocate and free any security structures stored in file->f_security.
602 : * @file contains the file structure being modified.
603 : * @file_ioctl:
604 : * @file contains the file structure.
605 : * @cmd contains the operation to perform.
606 : * @arg contains the operational arguments.
607 : * Check permission for an ioctl operation on @file. Note that @arg can
608 : * sometimes represents a user space pointer; in other cases, it may be a
609 : * simple integer value. When @arg represents a user space pointer, it
610 : * should never be used by the security module.
611 : * Return 0 if permission is granted.
612 : * @file_mmap :
613 : * Check permissions for a mmap operation. The @file may be NULL, e.g.
614 : * if mapping anonymous memory.
615 : * @file contains the file structure for file to map (may be NULL).
616 : * @reqprot contains the protection requested by the application.
617 : * @prot contains the protection that will be applied by the kernel.
618 : * @flags contains the operational flags.
619 : * Return 0 if permission is granted.
620 : * @file_mprotect:
621 : * Check permissions before changing memory access permissions.
622 : * @vma contains the memory region to modify.
623 : * @reqprot contains the protection requested by the application.
624 : * @prot contains the protection that will be applied by the kernel.
625 : * Return 0 if permission is granted.
626 : * @file_lock:
627 : * Check permission before performing file locking operations.
628 : * Note: this hook mediates both flock and fcntl style locks.
629 : * @file contains the file structure.
630 : * @cmd contains the posix-translated lock operation to perform
631 : * (e.g. F_RDLCK, F_WRLCK).
632 : * Return 0 if permission is granted.
633 : * @file_fcntl:
634 : * Check permission before allowing the file operation specified by @cmd
635 : * from being performed on the file @file. Note that @arg can sometimes
636 : * represents a user space pointer; in other cases, it may be a simple
637 : * integer value. When @arg represents a user space pointer, it should
638 : * never be used by the security module.
639 : * @file contains the file structure.
640 : * @cmd contains the operation to be performed.
641 : * @arg contains the operational arguments.
642 : * Return 0 if permission is granted.
643 : * @file_set_fowner:
644 : * Save owner security information (typically from current->security) in
645 : * file->f_security for later use by the send_sigiotask hook.
646 : * @file contains the file structure to update.
647 : * Return 0 on success.
648 : * @file_send_sigiotask:
649 : * Check permission for the file owner @fown to send SIGIO or SIGURG to the
650 : * process @tsk. Note that this hook is sometimes called from interrupt.
651 : * Note that the fown_struct, @fown, is never outside the context of a
652 : * struct file, so the file structure (and associated security information)
653 : * can always be obtained:
654 : * container_of(fown, struct file, f_owner)
655 : * @tsk contains the structure of task receiving signal.
656 : * @fown contains the file owner information.
657 : * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
658 : * Return 0 if permission is granted.
659 : * @file_receive:
660 : * This hook allows security modules to control the ability of a process
661 : * to receive an open file descriptor via socket IPC.
662 : * @file contains the file structure being received.
663 : * Return 0 if permission is granted.
664 : *
665 : * Security hook for dentry
666 : *
667 : * @dentry_open
668 : * Save open-time permission checking state for later use upon
669 : * file_permission, and recheck access if anything has changed
670 : * since inode_permission.
671 : *
672 : * Security hooks for task operations.
673 : *
674 : * @task_create:
675 : * Check permission before creating a child process. See the clone(2)
676 : * manual page for definitions of the @clone_flags.
677 : * @clone_flags contains the flags indicating what should be shared.
678 : * Return 0 if permission is granted.
679 : * @cred_alloc_blank:
680 : * @cred points to the credentials.
681 : * @gfp indicates the atomicity of any memory allocations.
682 : * Only allocate sufficient memory and attach to @cred such that
683 : * cred_transfer() will not get ENOMEM.
684 : * @cred_free:
685 : * @cred points to the credentials.
686 : * Deallocate and clear the cred->security field in a set of credentials.
687 : * @cred_prepare:
688 : * @new points to the new credentials.
689 : * @old points to the original credentials.
690 : * @gfp indicates the atomicity of any memory allocations.
691 : * Prepare a new set of credentials by copying the data from the old set.
692 : * @cred_commit:
693 : * @new points to the new credentials.
694 : * @old points to the original credentials.
695 : * Install a new set of credentials.
696 : * @cred_transfer:
697 : * @new points to the new credentials.
698 : * @old points to the original credentials.
699 : * Transfer data from original creds to new creds
700 : * @kernel_act_as:
701 : * Set the credentials for a kernel service to act as (subjective context).
702 : * @new points to the credentials to be modified.
703 : * @secid specifies the security ID to be set
704 : * The current task must be the one that nominated @secid.
705 : * Return 0 if successful.
706 : * @kernel_create_files_as:
707 : * Set the file creation context in a set of credentials to be the same as
708 : * the objective context of the specified inode.
709 : * @new points to the credentials to be modified.
710 : * @inode points to the inode to use as a reference.
711 : * The current task must be the one that nominated @inode.
712 : * Return 0 if successful.
713 : * @kernel_module_request:
714 : * Ability to trigger the kernel to automatically upcall to userspace for
715 : * userspace to load a kernel module with the given name.
716 : * @kmod_name name of the module requested by the kernel
717 : * Return 0 if successful.
718 : * @task_setuid:
719 : * Check permission before setting one or more of the user identity
720 : * attributes of the current process. The @flags parameter indicates
721 : * which of the set*uid system calls invoked this hook and how to
722 : * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
723 : * definitions at the beginning of this file for the @flags values and
724 : * their meanings.
725 : * @id0 contains a uid.
726 : * @id1 contains a uid.
727 : * @id2 contains a uid.
728 : * @flags contains one of the LSM_SETID_* values.
729 : * Return 0 if permission is granted.
730 : * @task_fix_setuid:
731 : * Update the module's state after setting one or more of the user
732 : * identity attributes of the current process. The @flags parameter
733 : * indicates which of the set*uid system calls invoked this hook. If
734 : * @new is the set of credentials that will be installed. Modifications
735 : * should be made to this rather than to @current->cred.
736 : * @old is the set of credentials that are being replaces
737 : * @flags contains one of the LSM_SETID_* values.
738 : * Return 0 on success.
739 : * @task_setgid:
740 : * Check permission before setting one or more of the group identity
741 : * attributes of the current process. The @flags parameter indicates
742 : * which of the set*gid system calls invoked this hook and how to
743 : * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
744 : * definitions at the beginning of this file for the @flags values and
745 : * their meanings.
746 : * @id0 contains a gid.
747 : * @id1 contains a gid.
748 : * @id2 contains a gid.
749 : * @flags contains one of the LSM_SETID_* values.
750 : * Return 0 if permission is granted.
751 : * @task_setpgid:
752 : * Check permission before setting the process group identifier of the
753 : * process @p to @pgid.
754 : * @p contains the task_struct for process being modified.
755 : * @pgid contains the new pgid.
756 : * Return 0 if permission is granted.
757 : * @task_getpgid:
758 : * Check permission before getting the process group identifier of the
759 : * process @p.
760 : * @p contains the task_struct for the process.
761 : * Return 0 if permission is granted.
762 : * @task_getsid:
763 : * Check permission before getting the session identifier of the process
764 : * @p.
765 : * @p contains the task_struct for the process.
766 : * Return 0 if permission is granted.
767 : * @task_getsecid:
768 : * Retrieve the security identifier of the process @p.
769 : * @p contains the task_struct for the process and place is into @secid.
770 : * In case of failure, @secid will be set to zero.
771 : *
772 : * @task_setgroups:
773 : * Check permission before setting the supplementary group set of the
774 : * current process.
775 : * @group_info contains the new group information.
776 : * Return 0 if permission is granted.
777 : * @task_setnice:
778 : * Check permission before setting the nice value of @p to @nice.
779 : * @p contains the task_struct of process.
780 : * @nice contains the new nice value.
781 : * Return 0 if permission is granted.
782 : * @task_setioprio
783 : * Check permission before setting the ioprio value of @p to @ioprio.
784 : * @p contains the task_struct of process.
785 : * @ioprio contains the new ioprio value
786 : * Return 0 if permission is granted.
787 : * @task_getioprio
788 : * Check permission before getting the ioprio value of @p.
789 : * @p contains the task_struct of process.
790 : * Return 0 if permission is granted.
791 : * @task_setrlimit:
792 : * Check permission before setting the resource limits of the current
793 : * process for @resource to @new_rlim. The old resource limit values can
794 : * be examined by dereferencing (current->signal->rlim + resource).
795 : * @resource contains the resource whose limit is being set.
796 : * @new_rlim contains the new limits for @resource.
797 : * Return 0 if permission is granted.
798 : * @task_setscheduler:
799 : * Check permission before setting scheduling policy and/or parameters of
800 : * process @p based on @policy and @lp.
801 : * @p contains the task_struct for process.
802 : * @policy contains the scheduling policy.
803 : * @lp contains the scheduling parameters.
804 : * Return 0 if permission is granted.
805 : * @task_getscheduler:
806 : * Check permission before obtaining scheduling information for process
807 : * @p.
808 : * @p contains the task_struct for process.
809 : * Return 0 if permission is granted.
810 : * @task_movememory
811 : * Check permission before moving memory owned by process @p.
812 : * @p contains the task_struct for process.
813 : * Return 0 if permission is granted.
814 : * @task_kill:
815 : * Check permission before sending signal @sig to @p. @info can be NULL,
816 : * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
817 : * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
818 : * from the kernel and should typically be permitted.
819 : * SIGIO signals are handled separately by the send_sigiotask hook in
820 : * file_security_ops.
821 : * @p contains the task_struct for process.
822 : * @info contains the signal information.
823 : * @sig contains the signal value.
824 : * @secid contains the sid of the process where the signal originated
825 : * Return 0 if permission is granted.
826 : * @task_wait:
827 : * Check permission before allowing a process to reap a child process @p
828 : * and collect its status information.
829 : * @p contains the task_struct for process.
830 : * Return 0 if permission is granted.
831 : * @task_prctl:
832 : * Check permission before performing a process control operation on the
833 : * current process.
834 : * @option contains the operation.
835 : * @arg2 contains a argument.
836 : * @arg3 contains a argument.
837 : * @arg4 contains a argument.
838 : * @arg5 contains a argument.
839 : * Return -ENOSYS if no-one wanted to handle this op, any other value to
840 : * cause prctl() to return immediately with that value.
841 : * @task_to_inode:
842 : * Set the security attributes for an inode based on an associated task's
843 : * security attributes, e.g. for /proc/pid inodes.
844 : * @p contains the task_struct for the task.
845 : * @inode contains the inode structure for the inode.
846 : *
847 : * Security hooks for Netlink messaging.
848 : *
849 : * @netlink_send:
850 : * Save security information for a netlink message so that permission
851 : * checking can be performed when the message is processed. The security
852 : * information can be saved using the eff_cap field of the
853 : * netlink_skb_parms structure. Also may be used to provide fine
854 : * grained control over message transmission.
855 : * @sk associated sock of task sending the message.,
856 : * @skb contains the sk_buff structure for the netlink message.
857 : * Return 0 if the information was successfully saved and message
858 : * is allowed to be transmitted.
859 : * @netlink_recv:
860 : * Check permission before processing the received netlink message in
861 : * @skb.
862 : * @skb contains the sk_buff structure for the netlink message.
863 : * @cap indicates the capability required
864 : * Return 0 if permission is granted.
865 : *
866 : * Security hooks for Unix domain networking.
867 : *
868 : * @unix_stream_connect:
869 : * Check permissions before establishing a Unix domain stream connection
870 : * between @sock and @other.
871 : * @sock contains the socket structure.
872 : * @other contains the peer socket structure.
873 : * Return 0 if permission is granted.
874 : * @unix_may_send:
875 : * Check permissions before connecting or sending datagrams from @sock to
876 : * @other.
877 : * @sock contains the socket structure.
878 : * @sock contains the peer socket structure.
879 : * Return 0 if permission is granted.
880 : *
881 : * The @unix_stream_connect and @unix_may_send hooks were necessary because
882 : * Linux provides an alternative to the conventional file name space for Unix
883 : * domain sockets. Whereas binding and connecting to sockets in the file name
884 : * space is mediated by the typical file permissions (and caught by the mknod
885 : * and permission hooks in inode_security_ops), binding and connecting to
886 : * sockets in the abstract name space is completely unmediated. Sufficient
887 : * control of Unix domain sockets in the abstract name space isn't possible
888 : * using only the socket layer hooks, since we need to know the actual target
889 : * socket, which is not looked up until we are inside the af_unix code.
890 : *
891 : * Security hooks for socket operations.
892 : *
893 : * @socket_create:
894 : * Check permissions prior to creating a new socket.
895 : * @family contains the requested protocol family.
896 : * @type contains the requested communications type.
897 : * @protocol contains the requested protocol.
898 : * @kern set to 1 if a kernel socket.
899 : * Return 0 if permission is granted.
900 : * @socket_post_create:
901 : * This hook allows a module to update or allocate a per-socket security
902 : * structure. Note that the security field was not added directly to the
903 : * socket structure, but rather, the socket security information is stored
904 : * in the associated inode. Typically, the inode alloc_security hook will
905 : * allocate and and attach security information to
906 : * sock->inode->i_security. This hook may be used to update the
907 : * sock->inode->i_security field with additional information that wasn't
908 : * available when the inode was allocated.
909 : * @sock contains the newly created socket structure.
910 : * @family contains the requested protocol family.
911 : * @type contains the requested communications type.
912 : * @protocol contains the requested protocol.
913 : * @kern set to 1 if a kernel socket.
914 : * @socket_bind:
915 : * Check permission before socket protocol layer bind operation is
916 : * performed and the socket @sock is bound to the address specified in the
917 : * @address parameter.
918 : * @sock contains the socket structure.
919 : * @address contains the address to bind to.
920 : * @addrlen contains the length of address.
921 : * Return 0 if permission is granted.
922 : * @socket_connect:
923 : * Check permission before socket protocol layer connect operation
924 : * attempts to connect socket @sock to a remote address, @address.
925 : * @sock contains the socket structure.
926 : * @address contains the address of remote endpoint.
927 : * @addrlen contains the length of address.
928 : * Return 0 if permission is granted.
929 : * @socket_listen:
930 : * Check permission before socket protocol layer listen operation.
931 : * @sock contains the socket structure.
932 : * @backlog contains the maximum length for the pending connection queue.
933 : * Return 0 if permission is granted.
934 : * @socket_accept:
935 : * Check permission before accepting a new connection. Note that the new
936 : * socket, @newsock, has been created and some information copied to it,
937 : * but the accept operation has not actually been performed.
938 : * @sock contains the listening socket structure.
939 : * @newsock contains the newly created server socket for connection.
940 : * Return 0 if permission is granted.
941 : * @socket_sendmsg:
942 : * Check permission before transmitting a message to another socket.
943 : * @sock contains the socket structure.
944 : * @msg contains the message to be transmitted.
945 : * @size contains the size of message.
946 : * Return 0 if permission is granted.
947 : * @socket_recvmsg:
948 : * Check permission before receiving a message from a socket.
949 : * @sock contains the socket structure.
950 : * @msg contains the message structure.
951 : * @size contains the size of message structure.
952 : * @flags contains the operational flags.
953 : * Return 0 if permission is granted.
954 : * @socket_getsockname:
955 : * Check permission before the local address (name) of the socket object
956 : * @sock is retrieved.
957 : * @sock contains the socket structure.
958 : * Return 0 if permission is granted.
959 : * @socket_getpeername:
960 : * Check permission before the remote address (name) of a socket object
961 : * @sock is retrieved.
962 : * @sock contains the socket structure.
963 : * Return 0 if permission is granted.
964 : * @socket_getsockopt:
965 : * Check permissions before retrieving the options associated with socket
966 : * @sock.
967 : * @sock contains the socket structure.
968 : * @level contains the protocol level to retrieve option from.
969 : * @optname contains the name of option to retrieve.
970 : * Return 0 if permission is granted.
971 : * @socket_setsockopt:
972 : * Check permissions before setting the options associated with socket
973 : * @sock.
974 : * @sock contains the socket structure.
975 : * @level contains the protocol level to set options for.
976 : * @optname contains the name of the option to set.
977 : * Return 0 if permission is granted.
978 : * @socket_shutdown:
979 : * Checks permission before all or part of a connection on the socket
980 : * @sock is shut down.
981 : * @sock contains the socket structure.
982 : * @how contains the flag indicating how future sends and receives are handled.
983 : * Return 0 if permission is granted.
984 : * @socket_sock_rcv_skb:
985 : * Check permissions on incoming network packets. This hook is distinct
986 : * from Netfilter's IP input hooks since it is the first time that the
987 : * incoming sk_buff @skb has been associated with a particular socket, @sk.
988 : * @sk contains the sock (not socket) associated with the incoming sk_buff.
989 : * @skb contains the incoming network data.
990 : * @socket_getpeersec_stream:
991 : * This hook allows the security module to provide peer socket security
992 : * state for unix or connected tcp sockets to userspace via getsockopt
993 : * SO_GETPEERSEC. For tcp sockets this can be meaningful if the
994 : * socket is associated with an ipsec SA.
995 : * @sock is the local socket.
996 : * @optval userspace memory where the security state is to be copied.
997 : * @optlen userspace int where the module should copy the actual length
998 : * of the security state.
999 : * @len as input is the maximum length to copy to userspace provided
1000 : * by the caller.
1001 : * Return 0 if all is well, otherwise, typical getsockopt return
1002 : * values.
1003 : * @socket_getpeersec_dgram:
1004 : * This hook allows the security module to provide peer socket security
1005 : * state for udp sockets on a per-packet basis to userspace via
1006 : * getsockopt SO_GETPEERSEC. The application must first have indicated
1007 : * the IP_PASSSEC option via getsockopt. It can then retrieve the
1008 : * security state returned by this hook for a packet via the SCM_SECURITY
1009 : * ancillary message type.
1010 : * @skb is the skbuff for the packet being queried
1011 : * @secdata is a pointer to a buffer in which to copy the security data
1012 : * @seclen is the maximum length for @secdata
1013 : * Return 0 on success, error on failure.
1014 : * @sk_alloc_security:
1015 : * Allocate and attach a security structure to the sk->sk_security field,
1016 : * which is used to copy security attributes between local stream sockets.
1017 : * @sk_free_security:
1018 : * Deallocate security structure.
1019 : * @sk_clone_security:
1020 : * Clone/copy security structure.
1021 : * @sk_getsecid:
1022 : * Retrieve the LSM-specific secid for the sock to enable caching of network
1023 : * authorizations.
1024 : * @sock_graft:
1025 : * Sets the socket's isec sid to the sock's sid.
1026 : * @inet_conn_request:
1027 : * Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
1028 : * @inet_csk_clone:
1029 : * Sets the new child socket's sid to the openreq sid.
1030 : * @inet_conn_established:
1031 : * Sets the connection's peersid to the secmark on skb.
1032 : * @req_classify_flow:
1033 : * Sets the flow's sid to the openreq sid.
1034 : * @tun_dev_create:
1035 : * Check permissions prior to creating a new TUN device.
1036 : * @tun_dev_post_create:
1037 : * This hook allows a module to update or allocate a per-socket security
1038 : * structure.
1039 : * @sk contains the newly created sock structure.
1040 : * @tun_dev_attach:
1041 : * Check permissions prior to attaching to a persistent TUN device. This
1042 : * hook can also be used by the module to update any security state
1043 : * associated with the TUN device's sock structure.
1044 : * @sk contains the existing sock structure.
1045 : *
1046 : * Security hooks for XFRM operations.
1047 : *
1048 : * @xfrm_policy_alloc_security:
1049 : * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
1050 : * Database used by the XFRM system.
1051 : * @sec_ctx contains the security context information being provided by
1052 : * the user-level policy update program (e.g., setkey).
1053 : * Allocate a security structure to the xp->security field; the security
1054 : * field is initialized to NULL when the xfrm_policy is allocated.
1055 : * Return 0 if operation was successful (memory to allocate, legal context)
1056 : * @xfrm_policy_clone_security:
1057 : * @old_ctx contains an existing xfrm_sec_ctx.
1058 : * @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
1059 : * Allocate a security structure in new_ctxp that contains the
1060 : * information from the old_ctx structure.
1061 : * Return 0 if operation was successful (memory to allocate).
1062 : * @xfrm_policy_free_security:
1063 : * @ctx contains the xfrm_sec_ctx
1064 : * Deallocate xp->security.
1065 : * @xfrm_policy_delete_security:
1066 : * @ctx contains the xfrm_sec_ctx.
1067 : * Authorize deletion of xp->security.
1068 : * @xfrm_state_alloc_security:
1069 : * @x contains the xfrm_state being added to the Security Association
1070 : * Database by the XFRM system.
1071 : * @sec_ctx contains the security context information being provided by
1072 : * the user-level SA generation program (e.g., setkey or racoon).
1073 : * @secid contains the secid from which to take the mls portion of the context.
1074 : * Allocate a security structure to the x->security field; the security
1075 : * field is initialized to NULL when the xfrm_state is allocated. Set the
1076 : * context to correspond to either sec_ctx or polsec, with the mls portion
1077 : * taken from secid in the latter case.
1078 : * Return 0 if operation was successful (memory to allocate, legal context).
1079 : * @xfrm_state_free_security:
1080 : * @x contains the xfrm_state.
1081 : * Deallocate x->security.
1082 : * @xfrm_state_delete_security:
1083 : * @x contains the xfrm_state.
1084 : * Authorize deletion of x->security.
1085 : * @xfrm_policy_lookup:
1086 : * @ctx contains the xfrm_sec_ctx for which the access control is being
1087 : * checked.
1088 : * @fl_secid contains the flow security label that is used to authorize
1089 : * access to the policy xp.
1090 : * @dir contains the direction of the flow (input or output).
1091 : * Check permission when a flow selects a xfrm_policy for processing
1092 : * XFRMs on a packet. The hook is called when selecting either a
1093 : * per-socket policy or a generic xfrm policy.
1094 : * Return 0 if permission is granted, -ESRCH otherwise, or -errno
1095 : * on other errors.
1096 : * @xfrm_state_pol_flow_match:
1097 : * @x contains the state to match.
1098 : * @xp contains the policy to check for a match.
1099 : * @fl contains the flow to check for a match.
1100 : * Return 1 if there is a match.
1101 : * @xfrm_decode_session:
1102 : * @skb points to skb to decode.
1103 : * @secid points to the flow key secid to set.
1104 : * @ckall says if all xfrms used should be checked for same secid.
1105 : * Return 0 if ckall is zero or all xfrms used have the same secid.
1106 : *
1107 : * Security hooks affecting all Key Management operations
1108 : *
1109 : * @key_alloc:
1110 : * Permit allocation of a key and assign security data. Note that key does
1111 : * not have a serial number assigned at this point.
1112 : * @key points to the key.
1113 : * @flags is the allocation flags
1114 : * Return 0 if permission is granted, -ve error otherwise.
1115 : * @key_free:
1116 : * Notification of destruction; free security data.
1117 : * @key points to the key.
1118 : * No return value.
1119 : * @key_permission:
1120 : * See whether a specific operational right is granted to a process on a
1121 : * key.
1122 : * @key_ref refers to the key (key pointer + possession attribute bit).
1123 : * @cred points to the credentials to provide the context against which to
1124 : * evaluate the security data on the key.
1125 : * @perm describes the combination of permissions required of this key.
1126 : * Return 1 if permission granted, 0 if permission denied and -ve it the
1127 : * normal permissions model should be effected.
1128 : * @key_getsecurity:
1129 : * Get a textual representation of the security context attached to a key
1130 : * for the purposes of honouring KEYCTL_GETSECURITY. This function
1131 : * allocates the storage for the NUL-terminated string and the caller
1132 : * should free it.
1133 : * @key points to the key to be queried.
1134 : * @_buffer points to a pointer that should be set to point to the
1135 : * resulting string (if no label or an error occurs).
1136 : * Return the length of the string (including terminating NUL) or -ve if
1137 : * an error.
1138 : * May also return 0 (and a NULL buffer pointer) if there is no label.
1139 : * @key_session_to_parent:
1140 : * Forcibly assign the session keyring from a process to its parent
1141 : * process.
1142 : * @cred: Pointer to process's credentials
1143 : * @parent_cred: Pointer to parent process's credentials
1144 : * @keyring: Proposed new session keyring
1145 : * Return 0 if permission is granted, -ve error otherwise.
1146 : *
1147 : * Security hooks affecting all System V IPC operations.
1148 : *
1149 : * @ipc_permission:
1150 : * Check permissions for access to IPC
1151 : * @ipcp contains the kernel IPC permission structure
1152 : * @flag contains the desired (requested) permission set
1153 : * Return 0 if permission is granted.
1154 : * @ipc_getsecid:
1155 : * Get the secid associated with the ipc object.
1156 : * @ipcp contains the kernel IPC permission structure.
1157 : * @secid contains a pointer to the location where result will be saved.
1158 : * In case of failure, @secid will be set to zero.
1159 : *
1160 : * Security hooks for individual messages held in System V IPC message queues
1161 : * @msg_msg_alloc_security:
1162 : * Allocate and attach a security structure to the msg->security field.
1163 : * The security field is initialized to NULL when the structure is first
1164 : * created.
1165 : * @msg contains the message structure to be modified.
1166 : * Return 0 if operation was successful and permission is granted.
1167 : * @msg_msg_free_security:
1168 : * Deallocate the security structure for this message.
1169 : * @msg contains the message structure to be modified.
1170 : *
1171 : * Security hooks for System V IPC Message Queues
1172 : *
1173 : * @msg_queue_alloc_security:
1174 : * Allocate and attach a security structure to the
1175 : * msq->q_perm.security field. The security field is initialized to
1176 : * NULL when the structure is first created.
1177 : * @msq contains the message queue structure to be modified.
1178 : * Return 0 if operation was successful and permission is granted.
1179 : * @msg_queue_free_security:
1180 : * Deallocate security structure for this message queue.
1181 : * @msq contains the message queue structure to be modified.
1182 : * @msg_queue_associate:
1183 : * Check permission when a message queue is requested through the
1184 : * msgget system call. This hook is only called when returning the
1185 : * message queue identifier for an existing message queue, not when a
1186 : * new message queue is created.
1187 : * @msq contains the message queue to act upon.
1188 : * @msqflg contains the operation control flags.
1189 : * Return 0 if permission is granted.
1190 : * @msg_queue_msgctl:
1191 : * Check permission when a message control operation specified by @cmd
1192 : * is to be performed on the message queue @msq.
1193 : * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
1194 : * @msq contains the message queue to act upon. May be NULL.
1195 : * @cmd contains the operation to be performed.
1196 : * Return 0 if permission is granted.
1197 : * @msg_queue_msgsnd:
1198 : * Check permission before a message, @msg, is enqueued on the message
1199 : * queue, @msq.
1200 : * @msq contains the message queue to send message to.
1201 : * @msg contains the message to be enqueued.
1202 : * @msqflg contains operational flags.
1203 : * Return 0 if permission is granted.
1204 : * @msg_queue_msgrcv:
1205 : * Check permission before a message, @msg, is removed from the message
1206 : * queue, @msq. The @target task structure contains a pointer to the
1207 : * process that will be receiving the message (not equal to the current
1208 : * process when inline receives are being performed).
1209 : * @msq contains the message queue to retrieve message from.
1210 : * @msg contains the message destination.
1211 : * @target contains the task structure for recipient process.
1212 : * @type contains the type of message requested.
1213 : * @mode contains the operational flags.
1214 : * Return 0 if permission is granted.
1215 : *
1216 : * Security hooks for System V Shared Memory Segments
1217 : *
1218 : * @shm_alloc_security:
1219 : * Allocate and attach a security structure to the shp->shm_perm.security
1220 : * field. The security field is initialized to NULL when the structure is
1221 : * first created.
1222 : * @shp contains the shared memory structure to be modified.
1223 : * Return 0 if operation was successful and permission is granted.
1224 : * @shm_free_security:
1225 : * Deallocate the security struct for this memory segment.
1226 : * @shp contains the shared memory structure to be modified.
1227 : * @shm_associate:
1228 : * Check permission when a shared memory region is requested through the
1229 : * shmget system call. This hook is only called when returning the shared
1230 : * memory region identifier for an existing region, not when a new shared
1231 : * memory region is created.
1232 : * @shp contains the shared memory structure to be modified.
1233 : * @shmflg contains the operation control flags.
1234 : * Return 0 if permission is granted.
1235 : * @shm_shmctl:
1236 : * Check permission when a shared memory control operation specified by
1237 : * @cmd is to be performed on the shared memory region @shp.
1238 : * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1239 : * @shp contains shared memory structure to be modified.
1240 : * @cmd contains the operation to be performed.
1241 : * Return 0 if permission is granted.
1242 : * @shm_shmat:
1243 : * Check permissions prior to allowing the shmat system call to attach the
1244 : * shared memory segment @shp to the data segment of the calling process.
1245 : * The attaching address is specified by @shmaddr.
1246 : * @shp contains the shared memory structure to be modified.
1247 : * @shmaddr contains the address to attach memory region to.
1248 : * @shmflg contains the operational flags.
1249 : * Return 0 if permission is granted.
1250 : *
1251 : * Security hooks for System V Semaphores
1252 : *
1253 : * @sem_alloc_security:
1254 : * Allocate and attach a security structure to the sma->sem_perm.security
1255 : * field. The security field is initialized to NULL when the structure is
1256 : * first created.
1257 : * @sma contains the semaphore structure
1258 : * Return 0 if operation was successful and permission is granted.
1259 : * @sem_free_security:
1260 : * deallocate security struct for this semaphore
1261 : * @sma contains the semaphore structure.
1262 : * @sem_associate:
1263 : * Check permission when a semaphore is requested through the semget
1264 : * system call. This hook is only called when returning the semaphore
1265 : * identifier for an existing semaphore, not when a new one must be
1266 : * created.
1267 : * @sma contains the semaphore structure.
1268 : * @semflg contains the operation control flags.
1269 : * Return 0 if permission is granted.
1270 : * @sem_semctl:
1271 : * Check permission when a semaphore operation specified by @cmd is to be
1272 : * performed on the semaphore @sma. The @sma may be NULL, e.g. for
1273 : * IPC_INFO or SEM_INFO.
1274 : * @sma contains the semaphore structure. May be NULL.
1275 : * @cmd contains the operation to be performed.
1276 : * Return 0 if permission is granted.
1277 : * @sem_semop
1278 : * Check permissions before performing operations on members of the
1279 : * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1280 : * may be modified.
1281 : * @sma contains the semaphore structure.
1282 : * @sops contains the operations to perform.
1283 : * @nsops contains the number of operations to perform.
1284 : * @alter contains the flag indicating whether changes are to be made.
1285 : * Return 0 if permission is granted.
1286 : *
1287 : * @ptrace_access_check:
1288 : * Check permission before allowing the current process to trace the
1289 : * @child process.
1290 : * Security modules may also want to perform a process tracing check
1291 : * during an execve in the set_security or apply_creds hooks of
1292 : * tracing check during an execve in the bprm_set_creds hook of
1293 : * binprm_security_ops if the process is being traced and its security
1294 : * attributes would be changed by the execve.
1295 : * @child contains the task_struct structure for the target process.
1296 : * @mode contains the PTRACE_MODE flags indicating the form of access.
1297 : * Return 0 if permission is granted.
1298 : * @ptrace_traceme:
1299 : * Check that the @parent process has sufficient permission to trace the
1300 : * current process before allowing the current process to present itself
1301 : * to the @parent process for tracing.
1302 : * The parent process will still have to undergo the ptrace_access_check
1303 : * checks before it is allowed to trace this one.
1304 : * @parent contains the task_struct structure for debugger process.
1305 : * Return 0 if permission is granted.
1306 : * @capget:
1307 : * Get the @effective, @inheritable, and @permitted capability sets for
1308 : * the @target process. The hook may also perform permission checking to
1309 : * determine if the current process is allowed to see the capability sets
1310 : * of the @target process.
1311 : * @target contains the task_struct structure for target process.
1312 : * @effective contains the effective capability set.
1313 : * @inheritable contains the inheritable capability set.
1314 : * @permitted contains the permitted capability set.
1315 : * Return 0 if the capability sets were successfully obtained.
1316 : * @capset:
1317 : * Set the @effective, @inheritable, and @permitted capability sets for
1318 : * the current process.
1319 : * @new contains the new credentials structure for target process.
1320 : * @old contains the current credentials structure for target process.
1321 : * @effective contains the effective capability set.
1322 : * @inheritable contains the inheritable capability set.
1323 : * @permitted contains the permitted capability set.
1324 : * Return 0 and update @new if permission is granted.
1325 : * @capable:
1326 : * Check whether the @tsk process has the @cap capability in the indicated
1327 : * credentials.
1328 : * @tsk contains the task_struct for the process.
1329 : * @cred contains the credentials to use.
1330 : * @cap contains the capability <include/linux/capability.h>.
1331 : * @audit: Whether to write an audit message or not
1332 : * Return 0 if the capability is granted for @tsk.
1333 : * @acct:
1334 : * Check permission before enabling or disabling process accounting. If
1335 : * accounting is being enabled, then @file refers to the open file used to
1336 : * store accounting records. If accounting is being disabled, then @file
1337 : * is NULL.
1338 : * @file contains the file structure for the accounting file (may be NULL).
1339 : * Return 0 if permission is granted.
1340 : * @sysctl:
1341 : * Check permission before accessing the @table sysctl variable in the
1342 : * manner specified by @op.
1343 : * @table contains the ctl_table structure for the sysctl variable.
1344 : * @op contains the operation (001 = search, 002 = write, 004 = read).
1345 : * Return 0 if permission is granted.
1346 : * @syslog:
1347 : * Check permission before accessing the kernel message ring or changing
1348 : * logging to the console.
1349 : * See the syslog(2) manual page for an explanation of the @type values.
1350 : * @type contains the type of action.
1351 : * Return 0 if permission is granted.
1352 : * @settime:
1353 : * Check permission to change the system time.
1354 : * struct timespec and timezone are defined in include/linux/time.h
1355 : * @ts contains new time
1356 : * @tz contains new timezone
1357 : * Return 0 if permission is granted.
1358 : * @vm_enough_memory:
1359 : * Check permissions for allocating a new virtual mapping.
1360 : * @mm contains the mm struct it is being added to.
1361 : * @pages contains the number of pages.
1362 : * Return 0 if permission is granted.
1363 : *
1364 : * @secid_to_secctx:
1365 : * Convert secid to security context.
1366 : * @secid contains the security ID.
1367 : * @secdata contains the pointer that stores the converted security context.
1368 : * @secctx_to_secid:
1369 : * Convert security context to secid.
1370 : * @secid contains the pointer to the generated security ID.
1371 : * @secdata contains the security context.
1372 : *
1373 : * @release_secctx:
1374 : * Release the security context.
1375 : * @secdata contains the security context.
1376 : * @seclen contains the length of the security context.
1377 : *
1378 : * Security hooks for Audit
1379 : *
1380 : * @audit_rule_init:
1381 : * Allocate and initialize an LSM audit rule structure.
1382 : * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
1383 : * @op contains the operator the rule uses.
1384 : * @rulestr contains the context where the rule will be applied to.
1385 : * @lsmrule contains a pointer to receive the result.
1386 : * Return 0 if @lsmrule has been successfully set,
1387 : * -EINVAL in case of an invalid rule.
1388 : *
1389 : * @audit_rule_known:
1390 : * Specifies whether given @rule contains any fields related to current LSM.
1391 : * @rule contains the audit rule of interest.
1392 : * Return 1 in case of relation found, 0 otherwise.
1393 : *
1394 : * @audit_rule_match:
1395 : * Determine if given @secid matches a rule previously approved
1396 : * by @audit_rule_known.
1397 : * @secid contains the security id in question.
1398 : * @field contains the field which relates to current LSM.
1399 : * @op contains the operator that will be used for matching.
1400 : * @rule points to the audit rule that will be checked against.
1401 : * @actx points to the audit context associated with the check.
1402 : * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
1403 : *
1404 : * @audit_rule_free:
1405 : * Deallocate the LSM audit rule structure previously allocated by
1406 : * audit_rule_init.
1407 : * @rule contains the allocated rule
1408 : *
1409 : * @inode_notifysecctx:
1410 : * Notify the security module of what the security context of an inode
1411 : * should be. Initializes the incore security context managed by the
1412 : * security module for this inode. Example usage: NFS client invokes
1413 : * this hook to initialize the security context in its incore inode to the
1414 : * value provided by the server for the file when the server returned the
1415 : * file's attributes to the client.
1416 : *
1417 : * Must be called with inode->i_mutex locked.
1418 : *
1419 : * @inode we wish to set the security context of.
1420 : * @ctx contains the string which we wish to set in the inode.
1421 : * @ctxlen contains the length of @ctx.
1422 : *
1423 : * @inode_setsecctx:
1424 : * Change the security context of an inode. Updates the
1425 : * incore security context managed by the security module and invokes the
1426 : * fs code as needed (via __vfs_setxattr_noperm) to update any backing
1427 : * xattrs that represent the context. Example usage: NFS server invokes
1428 : * this hook to change the security context in its incore inode and on the
1429 : * backing filesystem to a value provided by the client on a SETATTR
1430 : * operation.
1431 : *
1432 : * Must be called with inode->i_mutex locked.
1433 : *
1434 : * @dentry contains the inode we wish to set the security context of.
1435 : * @ctx contains the string which we wish to set in the inode.
1436 : * @ctxlen contains the length of @ctx.
1437 : *
1438 : * @inode_getsecctx:
1439 : * Returns a string containing all relavent security context information
1440 : *
1441 : * @inode we wish to set the security context of.
1442 : * @ctx is a pointer in which to place the allocated security context.
1443 : * @ctxlen points to the place to put the length of @ctx.
1444 : * This is the main security structure.
1445 : */
1446 : struct security_operations {
1447 : char name[SECURITY_NAME_MAX + 1];
1448 :
1449 : int (*ptrace_access_check) (struct task_struct *child, unsigned int mode);
1450 : int (*ptrace_traceme) (struct task_struct *parent);
1451 : int (*capget) (struct task_struct *target,
1452 : kernel_cap_t *effective,
1453 : kernel_cap_t *inheritable, kernel_cap_t *permitted);
1454 : int (*capset) (struct cred *new,
1455 : const struct cred *old,
1456 : const kernel_cap_t *effective,
1457 : const kernel_cap_t *inheritable,
1458 : const kernel_cap_t *permitted);
1459 : int (*capable) (struct task_struct *tsk, const struct cred *cred,
1460 : int cap, int audit);
1461 : int (*acct) (struct file *file);
1462 : int (*sysctl) (struct ctl_table *table, int op);
1463 : int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
1464 : int (*quota_on) (struct dentry *dentry);
1465 : int (*syslog) (int type);
1466 : int (*settime) (struct timespec *ts, struct timezone *tz);
1467 : int (*vm_enough_memory) (struct mm_struct *mm, long pages);
1468 :
1469 : int (*bprm_set_creds) (struct linux_binprm *bprm);
1470 : int (*bprm_check_security) (struct linux_binprm *bprm);
1471 : int (*bprm_secureexec) (struct linux_binprm *bprm);
1472 : void (*bprm_committing_creds) (struct linux_binprm *bprm);
1473 : void (*bprm_committed_creds) (struct linux_binprm *bprm);
1474 :
1475 : int (*sb_alloc_security) (struct super_block *sb);
1476 : void (*sb_free_security) (struct super_block *sb);
1477 : int (*sb_copy_data) (char *orig, char *copy);
1478 : int (*sb_kern_mount) (struct super_block *sb, int flags, void *data);
1479 : int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
1480 : int (*sb_statfs) (struct dentry *dentry);
1481 : int (*sb_mount) (char *dev_name, struct path *path,
1482 : char *type, unsigned long flags, void *data);
1483 : int (*sb_check_sb) (struct vfsmount *mnt, struct path *path);
1484 : int (*sb_umount) (struct vfsmount *mnt, int flags);
1485 : void (*sb_umount_close) (struct vfsmount *mnt);
1486 : void (*sb_umount_busy) (struct vfsmount *mnt);
1487 : void (*sb_post_remount) (struct vfsmount *mnt,
1488 : unsigned long flags, void *data);
1489 : void (*sb_post_addmount) (struct vfsmount *mnt,
1490 : struct path *mountpoint);
1491 : int (*sb_pivotroot) (struct path *old_path,
1492 : struct path *new_path);
1493 : void (*sb_post_pivotroot) (struct path *old_path,
1494 : struct path *new_path);
1495 : int (*sb_set_mnt_opts) (struct super_block *sb,
1496 : struct security_mnt_opts *opts);
1497 : void (*sb_clone_mnt_opts) (const struct super_block *oldsb,
1498 : struct super_block *newsb);
1499 : int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
1500 :
1501 : #ifdef CONFIG_SECURITY_PATH
1502 : int (*path_unlink) (struct path *dir, struct dentry *dentry);
1503 : int (*path_mkdir) (struct path *dir, struct dentry *dentry, int mode);
1504 : int (*path_rmdir) (struct path *dir, struct dentry *dentry);
1505 : int (*path_mknod) (struct path *dir, struct dentry *dentry, int mode,
1506 : unsigned int dev);
1507 : int (*path_truncate) (struct path *path, loff_t length,
1508 : unsigned int time_attrs);
1509 : int (*path_symlink) (struct path *dir, struct dentry *dentry,
1510 : const char *old_name);
1511 : int (*path_link) (struct dentry *old_dentry, struct path *new_dir,
1512 : struct dentry *new_dentry);
1513 : int (*path_rename) (struct path *old_dir, struct dentry *old_dentry,
1514 : struct path *new_dir, struct dentry *new_dentry);
1515 : int (*path_chmod) (struct dentry *dentry, struct vfsmount *mnt,
1516 : mode_t mode);
1517 : int (*path_chown) (struct path *path, uid_t uid, gid_t gid);
1518 : int (*path_chroot) (struct path *path);
1519 : #endif
1520 :
1521 : int (*inode_alloc_security) (struct inode *inode);
1522 : void (*inode_free_security) (struct inode *inode);
1523 : int (*inode_init_security) (struct inode *inode, struct inode *dir,
1524 : char **name, void **value, size_t *len);
1525 : int (*inode_create) (struct inode *dir,
1526 : struct dentry *dentry, int mode);
1527 : int (*inode_link) (struct dentry *old_dentry,
1528 : struct inode *dir, struct dentry *new_dentry);
1529 : int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
1530 : int (*inode_symlink) (struct inode *dir,
1531 : struct dentry *dentry, const char *old_name);
1532 : int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, int mode);
1533 : int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
1534 : int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
1535 : int mode, dev_t dev);
1536 : int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
1537 : struct inode *new_dir, struct dentry *new_dentry);
1538 : int (*inode_readlink) (struct dentry *dentry);
1539 : int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
1540 : int (*inode_permission) (struct inode *inode, int mask);
1541 : int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
1542 : int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
1543 : void (*inode_delete) (struct inode *inode);
1544 : int (*inode_setxattr) (struct dentry *dentry, const char *name,
1545 : const void *value, size_t size, int flags);
1546 : void (*inode_post_setxattr) (struct dentry *dentry, const char *name,
1547 : const void *value, size_t size, int flags);
1548 : int (*inode_getxattr) (struct dentry *dentry, const char *name);
1549 : int (*inode_listxattr) (struct dentry *dentry);
1550 : int (*inode_removexattr) (struct dentry *dentry, const char *name);
1551 : int (*inode_need_killpriv) (struct dentry *dentry);
1552 : int (*inode_killpriv) (struct dentry *dentry);
1553 : int (*inode_getsecurity) (const struct inode *inode, const char *name, void **buffer, bool alloc);
1554 : int (*inode_setsecurity) (struct inode *inode, const char *name, const void *value, size_t size, int flags);
1555 : int (*inode_listsecurity) (struct inode *inode, char *buffer, size_t buffer_size);
1556 : void (*inode_getsecid) (const struct inode *inode, u32 *secid);
1557 :
1558 : int (*file_permission) (struct file *file, int mask);
1559 : int (*file_alloc_security) (struct file *file);
1560 : void (*file_free_security) (struct file *file);
1561 : int (*file_ioctl) (struct file *file, unsigned int cmd,
1562 : unsigned long arg);
1563 : int (*file_mmap) (struct file *file,
1564 : unsigned long reqprot, unsigned long prot,
1565 : unsigned long flags, unsigned long addr,
1566 : unsigned long addr_only);
1567 : int (*file_mprotect) (struct vm_area_struct *vma,
1568 : unsigned long reqprot,
1569 : unsigned long prot);
1570 : int (*file_lock) (struct file *file, unsigned int cmd);
1571 : int (*file_fcntl) (struct file *file, unsigned int cmd,
1572 : unsigned long arg);
1573 : int (*file_set_fowner) (struct file *file);
1574 : int (*file_send_sigiotask) (struct task_struct *tsk,
1575 : struct fown_struct *fown, int sig);
1576 : int (*file_receive) (struct file *file);
1577 : int (*dentry_open) (struct file *file, const struct cred *cred);
1578 :
1579 : int (*task_create) (unsigned long clone_flags);
1580 : int (*cred_alloc_blank) (struct cred *cred, gfp_t gfp);
1581 : void (*cred_free) (struct cred *cred);
1582 : int (*cred_prepare)(struct cred *new, const struct cred *old,
1583 : gfp_t gfp);
1584 : void (*cred_commit)(struct cred *new, const struct cred *old);
1585 : void (*cred_transfer)(struct cred *new, const struct cred *old);
1586 : int (*kernel_act_as)(struct cred *new, u32 secid);
1587 : int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
1588 : int (*kernel_module_request)(char *kmod_name);
1589 : int (*task_setuid) (uid_t id0, uid_t id1, uid_t id2, int flags);
1590 : int (*task_fix_setuid) (struct cred *new, const struct cred *old,
1591 : int flags);
1592 : int (*task_setgid) (gid_t id0, gid_t id1, gid_t id2, int flags);
1593 : int (*task_setpgid) (struct task_struct *p, pid_t pgid);
1594 : int (*task_getpgid) (struct task_struct *p);
1595 : int (*task_getsid) (struct task_struct *p);
1596 : void (*task_getsecid) (struct task_struct *p, u32 *secid);
1597 : int (*task_setgroups) (struct group_info *group_info);
1598 : int (*task_setnice) (struct task_struct *p, int nice);
1599 : int (*task_setioprio) (struct task_struct *p, int ioprio);
1600 : int (*task_getioprio) (struct task_struct *p);
1601 : int (*task_setrlimit) (unsigned int resource, struct rlimit *new_rlim);
1602 : int (*task_setscheduler) (struct task_struct *p, int policy,
1603 : struct sched_param *lp);
1604 : int (*task_getscheduler) (struct task_struct *p);
1605 : int (*task_movememory) (struct task_struct *p);
1606 : int (*task_kill) (struct task_struct *p,
1607 : struct siginfo *info, int sig, u32 secid);
1608 : int (*task_wait) (struct task_struct *p);
1609 : int (*task_prctl) (int option, unsigned long arg2,
1610 : unsigned long arg3, unsigned long arg4,
1611 : unsigned long arg5);
1612 : void (*task_to_inode) (struct task_struct *p, struct inode *inode);
1613 :
1614 : int (*ipc_permission) (struct kern_ipc_perm *ipcp, short flag);
1615 : void (*ipc_getsecid) (struct kern_ipc_perm *ipcp, u32 *secid);
1616 :
1617 : int (*msg_msg_alloc_security) (struct msg_msg *msg);
1618 : void (*msg_msg_free_security) (struct msg_msg *msg);
1619 :
1620 : int (*msg_queue_alloc_security) (struct msg_queue *msq);
1621 : void (*msg_queue_free_security) (struct msg_queue *msq);
1622 : int (*msg_queue_associate) (struct msg_queue *msq, int msqflg);
1623 : int (*msg_queue_msgctl) (struct msg_queue *msq, int cmd);
1624 : int (*msg_queue_msgsnd) (struct msg_queue *msq,
1625 : struct msg_msg *msg, int msqflg);
1626 : int (*msg_queue_msgrcv) (struct msg_queue *msq,
1627 : struct msg_msg *msg,
1628 : struct task_struct *target,
1629 : long type, int mode);
1630 :
1631 : int (*shm_alloc_security) (struct shmid_kernel *shp);
1632 : void (*shm_free_security) (struct shmid_kernel *shp);
1633 : int (*shm_associate) (struct shmid_kernel *shp, int shmflg);
1634 : int (*shm_shmctl) (struct shmid_kernel *shp, int cmd);
1635 : int (*shm_shmat) (struct shmid_kernel *shp,
1636 : char __user *shmaddr, int shmflg);
1637 :
1638 : int (*sem_alloc_security) (struct sem_array *sma);
1639 : void (*sem_free_security) (struct sem_array *sma);
1640 : int (*sem_associate) (struct sem_array *sma, int semflg);
1641 : int (*sem_semctl) (struct sem_array *sma, int cmd);
1642 : int (*sem_semop) (struct sem_array *sma,
1643 : struct sembuf *sops, unsigned nsops, int alter);
1644 :
1645 : int (*netlink_send) (struct sock *sk, struct sk_buff *skb);
1646 : int (*netlink_recv) (struct sk_buff *skb, int cap);
1647 :
1648 : void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1649 :
1650 : int (*getprocattr) (struct task_struct *p, char *name, char **value);
1651 : int (*setprocattr) (struct task_struct *p, char *name, void *value, size_t size);
1652 : int (*secid_to_secctx) (u32 secid, char **secdata, u32 *seclen);
1653 : int (*secctx_to_secid) (const char *secdata, u32 seclen, u32 *secid);
1654 : void (*release_secctx) (char *secdata, u32 seclen);
1655 :
1656 : int (*inode_notifysecctx)(struct inode *inode, void *ctx, u32 ctxlen);
1657 : int (*inode_setsecctx)(struct dentry *dentry, void *ctx, u32 ctxlen);
1658 : int (*inode_getsecctx)(struct inode *inode, void **ctx, u32 *ctxlen);
1659 :
1660 : #ifdef CONFIG_SECURITY_NETWORK
1661 : int (*unix_stream_connect) (struct socket *sock,
1662 : struct socket *other, struct sock *newsk);
1663 : int (*unix_may_send) (struct socket *sock, struct socket *other);
1664 :
1665 : int (*socket_create) (int family, int type, int protocol, int kern);
1666 : int (*socket_post_create) (struct socket *sock, int family,
1667 : int type, int protocol, int kern);
1668 : int (*socket_bind) (struct socket *sock,
1669 : struct sockaddr *address, int addrlen);
1670 : int (*socket_connect) (struct socket *sock,
1671 : struct sockaddr *address, int addrlen);
1672 : int (*socket_listen) (struct socket *sock, int backlog);
1673 : int (*socket_accept) (struct socket *sock, struct socket *newsock);
1674 : int (*socket_sendmsg) (struct socket *sock,
1675 : struct msghdr *msg, int size);
1676 : int (*socket_recvmsg) (struct socket *sock,
1677 : struct msghdr *msg, int size, int flags);
1678 : int (*socket_getsockname) (struct socket *sock);
1679 : int (*socket_getpeername) (struct socket *sock);
1680 : int (*socket_getsockopt) (struct socket *sock, int level, int optname);
1681 : int (*socket_setsockopt) (struct socket *sock, int level, int optname);
1682 : int (*socket_shutdown) (struct socket *sock, int how);
1683 : int (*socket_sock_rcv_skb) (struct sock *sk, struct sk_buff *skb);
1684 : int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
1685 : int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
1686 : int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
1687 : void (*sk_free_security) (struct sock *sk);
1688 : void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
1689 : void (*sk_getsecid) (struct sock *sk, u32 *secid);
1690 : void (*sock_graft) (struct sock *sk, struct socket *parent);
1691 : int (*inet_conn_request) (struct sock *sk, struct sk_buff *skb,
1692 : struct request_sock *req);
1693 : void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req);
1694 : void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb);
1695 : void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
1696 : int (*tun_dev_create)(void);
1697 : void (*tun_dev_post_create)(struct sock *sk);
1698 : int (*tun_dev_attach)(struct sock *sk);
1699 : #endif /* CONFIG_SECURITY_NETWORK */
1700 :
1701 : #ifdef CONFIG_SECURITY_NETWORK_XFRM
1702 : int (*xfrm_policy_alloc_security) (struct xfrm_sec_ctx **ctxp,
1703 : struct xfrm_user_sec_ctx *sec_ctx);
1704 : int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
1705 : void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
1706 : int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
1707 : int (*xfrm_state_alloc_security) (struct xfrm_state *x,
1708 : struct xfrm_user_sec_ctx *sec_ctx,
1709 : u32 secid);
1710 : void (*xfrm_state_free_security) (struct xfrm_state *x);
1711 : int (*xfrm_state_delete_security) (struct xfrm_state *x);
1712 : int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1713 : int (*xfrm_state_pol_flow_match) (struct xfrm_state *x,
1714 : struct xfrm_policy *xp,
1715 : struct flowi *fl);
1716 : int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall);
1717 : #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1718 :
1719 : /* key management security hooks */
1720 : #ifdef CONFIG_KEYS
1721 : int (*key_alloc) (struct key *key, const struct cred *cred, unsigned long flags);
1722 : void (*key_free) (struct key *key);
1723 : int (*key_permission) (key_ref_t key_ref,
1724 : const struct cred *cred,
1725 : key_perm_t perm);
1726 : int (*key_getsecurity)(struct key *key, char **_buffer);
1727 : int (*key_session_to_parent)(const struct cred *cred,
1728 : const struct cred *parent_cred,
1729 : struct key *key);
1730 : #endif /* CONFIG_KEYS */
1731 :
1732 : #ifdef CONFIG_AUDIT
1733 : int (*audit_rule_init) (u32 field, u32 op, char *rulestr, void **lsmrule);
1734 : int (*audit_rule_known) (struct audit_krule *krule);
1735 : int (*audit_rule_match) (u32 secid, u32 field, u32 op, void *lsmrule,
1736 : struct audit_context *actx);
1737 : void (*audit_rule_free) (void *lsmrule);
1738 : #endif /* CONFIG_AUDIT */
1739 : };
1740 :
1741 : /* prototypes */
1742 : extern int security_init(void);
1743 : extern int security_module_enable(struct security_operations *ops);
1744 : extern int register_security(struct security_operations *ops);
1745 :
1746 : /* Security operations */
1747 : int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
1748 : int security_ptrace_traceme(struct task_struct *parent);
1749 : int security_capget(struct task_struct *target,
1750 : kernel_cap_t *effective,
1751 : kernel_cap_t *inheritable,
1752 : kernel_cap_t *permitted);
1753 : int security_capset(struct cred *new, const struct cred *old,
1754 : const kernel_cap_t *effective,
1755 : const kernel_cap_t *inheritable,
1756 : const kernel_cap_t *permitted);
1757 : int security_capable(int cap);
1758 : int security_real_capable(struct task_struct *tsk, int cap);
1759 : int security_real_capable_noaudit(struct task_struct *tsk, int cap);
1760 : int security_acct(struct file *file);
1761 : int security_sysctl(struct ctl_table *table, int op);
1762 : int security_quotactl(int cmds, int type, int id, struct super_block *sb);
1763 : int security_quota_on(struct dentry *dentry);
1764 : int security_syslog(int type);
1765 : int security_settime(struct timespec *ts, struct timezone *tz);
1766 : int security_vm_enough_memory(long pages);
1767 : int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
1768 : int security_vm_enough_memory_kern(long pages);
1769 : int security_bprm_set_creds(struct linux_binprm *bprm);
1770 : int security_bprm_check(struct linux_binprm *bprm);
1771 : void security_bprm_committing_creds(struct linux_binprm *bprm);
1772 : void security_bprm_committed_creds(struct linux_binprm *bprm);
1773 : int security_bprm_secureexec(struct linux_binprm *bprm);
1774 : int security_sb_alloc(struct super_block *sb);
1775 : void security_sb_free(struct super_block *sb);
1776 : int security_sb_copy_data(char *orig, char *copy);
1777 : int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
1778 : int security_sb_show_options(struct seq_file *m, struct super_block *sb);
1779 : int security_sb_statfs(struct dentry *dentry);
1780 : int security_sb_mount(char *dev_name, struct path *path,
1781 : char *type, unsigned long flags, void *data);
1782 : int security_sb_check_sb(struct vfsmount *mnt, struct path *path);
1783 : int security_sb_umount(struct vfsmount *mnt, int flags);
1784 : void security_sb_umount_close(struct vfsmount *mnt);
1785 : void security_sb_umount_busy(struct vfsmount *mnt);
1786 : void security_sb_post_remount(struct vfsmount *mnt, unsigned long flags, void *data);
1787 : void security_sb_post_addmount(struct vfsmount *mnt, struct path *mountpoint);
1788 : int security_sb_pivotroot(struct path *old_path, struct path *new_path);
1789 : void security_sb_post_pivotroot(struct path *old_path, struct path *new_path);
1790 : int security_sb_set_mnt_opts(struct super_block *sb, struct security_mnt_opts *opts);
1791 : void security_sb_clone_mnt_opts(const struct super_block *oldsb,
1792 : struct super_block *newsb);
1793 : int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
1794 :
1795 : int security_inode_alloc(struct inode *inode);
1796 : void security_inode_free(struct inode *inode);
1797 : int security_inode_init_security(struct inode *inode, struct inode *dir,
1798 : char **name, void **value, size_t *len);
1799 : int security_inode_create(struct inode *dir, struct dentry *dentry, int mode);
1800 : int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1801 : struct dentry *new_dentry);
1802 : int security_inode_unlink(struct inode *dir, struct dentry *dentry);
1803 : int security_inode_symlink(struct inode *dir, struct dentry *dentry,
1804 : const char *old_name);
1805 : int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode);
1806 : int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
1807 : int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev);
1808 : int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
1809 : struct inode *new_dir, struct dentry *new_dentry);
1810 : int security_inode_readlink(struct dentry *dentry);
1811 : int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
1812 : int security_inode_permission(struct inode *inode, int mask);
1813 : int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
1814 : int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
1815 : void security_inode_delete(struct inode *inode);
1816 : int security_inode_setxattr(struct dentry *dentry, const char *name,
1817 : const void *value, size_t size, int flags);
1818 : void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1819 : const void *value, size_t size, int flags);
1820 : int security_inode_getxattr(struct dentry *dentry, const char *name);
1821 : int security_inode_listxattr(struct dentry *dentry);
1822 : int security_inode_removexattr(struct dentry *dentry, const char *name);
1823 : int security_inode_need_killpriv(struct dentry *dentry);
1824 : int security_inode_killpriv(struct dentry *dentry);
1825 : int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
1826 : int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1827 : int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
1828 : void security_inode_getsecid(const struct inode *inode, u32 *secid);
1829 : int security_file_permission(struct file *file, int mask);
1830 : int security_file_alloc(struct file *file);
1831 : void security_file_free(struct file *file);
1832 : int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
1833 : int security_file_mmap(struct file *file, unsigned long reqprot,
1834 : unsigned long prot, unsigned long flags,
1835 : unsigned long addr, unsigned long addr_only);
1836 : int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1837 : unsigned long prot);
1838 : int security_file_lock(struct file *file, unsigned int cmd);
1839 : int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
1840 : int security_file_set_fowner(struct file *file);
1841 : int security_file_send_sigiotask(struct task_struct *tsk,
1842 : struct fown_struct *fown, int sig);
1843 : int security_file_receive(struct file *file);
1844 : int security_dentry_open(struct file *file, const struct cred *cred);
1845 : int security_task_create(unsigned long clone_flags);
1846 : int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
1847 : void security_cred_free(struct cred *cred);
1848 : int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
1849 : void security_commit_creds(struct cred *new, const struct cred *old);
1850 : void security_transfer_creds(struct cred *new, const struct cred *old);
1851 : int security_kernel_act_as(struct cred *new, u32 secid);
1852 : int security_kernel_create_files_as(struct cred *new, struct inode *inode);
1853 : int security_kernel_module_request(char *kmod_name);
1854 : int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags);
1855 : int security_task_fix_setuid(struct cred *new, const struct cred *old,
1856 : int flags);
1857 : int security_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags);
1858 : int security_task_setpgid(struct task_struct *p, pid_t pgid);
1859 : int security_task_getpgid(struct task_struct *p);
1860 : int security_task_getsid(struct task_struct *p);
1861 : void security_task_getsecid(struct task_struct *p, u32 *secid);
1862 : int security_task_setgroups(struct group_info *group_info);
1863 : int security_task_setnice(struct task_struct *p, int nice);
1864 : int security_task_setioprio(struct task_struct *p, int ioprio);
1865 : int security_task_getioprio(struct task_struct *p);
1866 : int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim);
1867 : int security_task_setscheduler(struct task_struct *p,
1868 : int policy, struct sched_param *lp);
1869 : int security_task_getscheduler(struct task_struct *p);
1870 : int security_task_movememory(struct task_struct *p);
1871 : int security_task_kill(struct task_struct *p, struct siginfo *info,
1872 : int sig, u32 secid);
1873 : int security_task_wait(struct task_struct *p);
1874 : int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1875 : unsigned long arg4, unsigned long arg5);
1876 : void security_task_to_inode(struct task_struct *p, struct inode *inode);
1877 : int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
1878 : void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
1879 : int security_msg_msg_alloc(struct msg_msg *msg);
1880 : void security_msg_msg_free(struct msg_msg *msg);
1881 : int security_msg_queue_alloc(struct msg_queue *msq);
1882 : void security_msg_queue_free(struct msg_queue *msq);
1883 : int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
1884 : int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
1885 : int security_msg_queue_msgsnd(struct msg_queue *msq,
1886 : struct msg_msg *msg, int msqflg);
1887 : int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1888 : struct task_struct *target, long type, int mode);
1889 : int security_shm_alloc(struct shmid_kernel *shp);
1890 : void security_shm_free(struct shmid_kernel *shp);
1891 : int security_shm_associate(struct shmid_kernel *shp, int shmflg);
1892 : int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
1893 : int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
1894 : int security_sem_alloc(struct sem_array *sma);
1895 : void security_sem_free(struct sem_array *sma);
1896 : int security_sem_associate(struct sem_array *sma, int semflg);
1897 : int security_sem_semctl(struct sem_array *sma, int cmd);
1898 : int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1899 : unsigned nsops, int alter);
1900 : void security_d_instantiate(struct dentry *dentry, struct inode *inode);
1901 : int security_getprocattr(struct task_struct *p, char *name, char **value);
1902 : int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
1903 : int security_netlink_send(struct sock *sk, struct sk_buff *skb);
1904 : int security_netlink_recv(struct sk_buff *skb, int cap);
1905 : int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
1906 : int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
1907 : void security_release_secctx(char *secdata, u32 seclen);
1908 :
1909 : int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
1910 : int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
1911 : int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
1912 : #else /* CONFIG_SECURITY */
1913 : struct security_mnt_opts {
1914 : };
1915 :
1916 : static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
1917 : {
1918 : }
1919 :
1920 : static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
1921 : {
1922 : }
1923 :
1924 : /*
1925 : * This is the default capabilities functionality. Most of these functions
1926 : * are just stubbed out, but a few must call the proper capable code.
1927 : */
1928 :
1929 : static inline int security_init(void)
1930 : {
1931 : return 0;
1932 : }
1933 :
1934 : static inline int security_ptrace_access_check(struct task_struct *child,
1935 : unsigned int mode)
1936 : {
1937 : return cap_ptrace_access_check(child, mode);
1938 : }
1939 :
1940 : static inline int security_ptrace_traceme(struct task_struct *parent)
1941 : {
1942 : return cap_ptrace_traceme(parent);
1943 : }
1944 :
1945 : static inline int security_capget(struct task_struct *target,
1946 : kernel_cap_t *effective,
1947 : kernel_cap_t *inheritable,
1948 : kernel_cap_t *permitted)
1949 : {
1950 : return cap_capget(target, effective, inheritable, permitted);
1951 : }
1952 :
1953 : static inline int security_capset(struct cred *new,
1954 : const struct cred *old,
1955 : const kernel_cap_t *effective,
1956 : const kernel_cap_t *inheritable,
1957 : const kernel_cap_t *permitted)
1958 : {
1959 : return cap_capset(new, old, effective, inheritable, permitted);
1960 : }
1961 :
1962 : static inline int security_capable(int cap)
1963 : {
1964 : return cap_capable(current, current_cred(), cap, SECURITY_CAP_AUDIT);
1965 : }
1966 :
1967 : static inline int security_real_capable(struct task_struct *tsk, int cap)
1968 : {
1969 : int ret;
1970 :
1971 : rcu_read_lock();
1972 : ret = cap_capable(tsk, __task_cred(tsk), cap, SECURITY_CAP_AUDIT);
1973 : rcu_read_unlock();
1974 : return ret;
1975 : }
1976 :
1977 : static inline
1978 : int security_real_capable_noaudit(struct task_struct *tsk, int cap)
1979 : {
1980 : int ret;
1981 :
1982 : rcu_read_lock();
1983 : ret = cap_capable(tsk, __task_cred(tsk), cap,
1984 : SECURITY_CAP_NOAUDIT);
1985 : rcu_read_unlock();
1986 : return ret;
1987 : }
1988 :
1989 : static inline int security_acct(struct file *file)
1990 : {
1991 : return 0;
1992 : }
1993 :
1994 : static inline int security_sysctl(struct ctl_table *table, int op)
1995 : {
1996 : return 0;
1997 : }
1998 :
1999 : static inline int security_quotactl(int cmds, int type, int id,
2000 : struct super_block *sb)
2001 : {
2002 : return 0;
2003 : }
2004 :
2005 : static inline int security_quota_on(struct dentry *dentry)
2006 : {
2007 : return 0;
2008 : }
2009 :
2010 : static inline int security_syslog(int type)
2011 : {
2012 : return cap_syslog(type);
2013 : }
2014 :
2015 : static inline int security_settime(struct timespec *ts, struct timezone *tz)
2016 : {
2017 : return cap_settime(ts, tz);
2018 : }
2019 :
2020 : static inline int security_vm_enough_memory(long pages)
2021 : {
2022 : WARN_ON(current->mm == NULL);
2023 : return cap_vm_enough_memory(current->mm, pages);
2024 : }
2025 :
2026 : static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
2027 : {
2028 : WARN_ON(mm == NULL);
2029 : return cap_vm_enough_memory(mm, pages);
2030 : }
2031 :
2032 : static inline int security_vm_enough_memory_kern(long pages)
2033 : {
2034 : /* If current->mm is a kernel thread then we will pass NULL,
2035 : for this specific case that is fine */
2036 : return cap_vm_enough_memory(current->mm, pages);
2037 : }
2038 :
2039 : static inline int security_bprm_set_creds(struct linux_binprm *bprm)
2040 : {
2041 : return cap_bprm_set_creds(bprm);
2042 : }
2043 :
2044 : static inline int security_bprm_check(struct linux_binprm *bprm)
2045 : {
2046 : return 0;
2047 : }
2048 :
2049 : static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
2050 : {
2051 : }
2052 :
2053 : static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
2054 : {
2055 : }
2056 :
2057 : static inline int security_bprm_secureexec(struct linux_binprm *bprm)
2058 : {
2059 : return cap_bprm_secureexec(bprm);
2060 : }
2061 :
2062 : static inline int security_sb_alloc(struct super_block *sb)
2063 : {
2064 : return 0;
2065 : }
2066 :
2067 : static inline void security_sb_free(struct super_block *sb)
2068 : { }
2069 :
2070 : static inline int security_sb_copy_data(char *orig, char *copy)
2071 : {
2072 : return 0;
2073 : }
2074 :
2075 : static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
2076 : {
2077 : return 0;
2078 : }
2079 :
2080 : static inline int security_sb_show_options(struct seq_file *m,
2081 : struct super_block *sb)
2082 : {
2083 : return 0;
2084 : }
2085 :
2086 : static inline int security_sb_statfs(struct dentry *dentry)
2087 : {
2088 : return 0;
2089 : }
2090 :
2091 : static inline int security_sb_mount(char *dev_name, struct path *path,
2092 : char *type, unsigned long flags,
2093 : void *data)
2094 : {
2095 : return 0;
2096 : }
2097 :
2098 : static inline int security_sb_check_sb(struct vfsmount *mnt,
2099 : struct path *path)
2100 : {
2101 : return 0;
2102 : }
2103 :
2104 : static inline int security_sb_umount(struct vfsmount *mnt, int flags)
2105 : {
2106 : return 0;
2107 : }
2108 :
2109 : static inline void security_sb_umount_close(struct vfsmount *mnt)
2110 : { }
2111 :
2112 : static inline void security_sb_umount_busy(struct vfsmount *mnt)
2113 : { }
2114 :
2115 : static inline void security_sb_post_remount(struct vfsmount *mnt,
2116 : unsigned long flags, void *data)
2117 : { }
2118 :
2119 : static inline void security_sb_post_addmount(struct vfsmount *mnt,
2120 : struct path *mountpoint)
2121 : { }
2122 :
2123 : static inline int security_sb_pivotroot(struct path *old_path,
2124 : struct path *new_path)
2125 : {
2126 : return 0;
2127 : }
2128 :
2129 : static inline void security_sb_post_pivotroot(struct path *old_path,
2130 : struct path *new_path)
2131 : { }
2132 :
2133 : static inline int security_sb_set_mnt_opts(struct super_block *sb,
2134 : struct security_mnt_opts *opts)
2135 : {
2136 : return 0;
2137 : }
2138 :
2139 : static inline void security_sb_clone_mnt_opts(const struct super_block *oldsb,
2140 : struct super_block *newsb)
2141 : { }
2142 :
2143 : static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
2144 : {
2145 : return 0;
2146 : }
2147 :
2148 : static inline int security_inode_alloc(struct inode *inode)
2149 : {
2150 : return 0;
2151 : }
2152 :
2153 : static inline void security_inode_free(struct inode *inode)
2154 : { }
2155 :
2156 : static inline int security_inode_init_security(struct inode *inode,
2157 : struct inode *dir,
2158 : char **name,
2159 : void **value,
2160 : size_t *len)
2161 : {
2162 16 : return -EOPNOTSUPP;
2163 : }
2164 :
2165 : static inline int security_inode_create(struct inode *dir,
2166 : struct dentry *dentry,
2167 : int mode)
2168 : {
2169 : return 0;
2170 : }
2171 :
2172 : static inline int security_inode_link(struct dentry *old_dentry,
2173 : struct inode *dir,
2174 : struct dentry *new_dentry)
2175 : {
2176 : return 0;
2177 : }
2178 :
2179 : static inline int security_inode_unlink(struct inode *dir,
2180 : struct dentry *dentry)
2181 : {
2182 : return 0;
2183 : }
2184 :
2185 : static inline int security_inode_symlink(struct inode *dir,
2186 : struct dentry *dentry,
2187 : const char *old_name)
2188 : {
2189 : return 0;
2190 : }
2191 :
2192 : static inline int security_inode_mkdir(struct inode *dir,
2193 : struct dentry *dentry,
2194 : int mode)
2195 : {
2196 : return 0;
2197 : }
2198 :
2199 : static inline int security_inode_rmdir(struct inode *dir,
2200 : struct dentry *dentry)
2201 : {
2202 : return 0;
2203 : }
2204 :
2205 : static inline int security_inode_mknod(struct inode *dir,
2206 : struct dentry *dentry,
2207 : int mode, dev_t dev)
2208 : {
2209 : return 0;
2210 : }
2211 :
2212 : static inline int security_inode_rename(struct inode *old_dir,
2213 : struct dentry *old_dentry,
2214 : struct inode *new_dir,
2215 : struct dentry *new_dentry)
2216 : {
2217 : return 0;
2218 : }
2219 :
2220 : static inline int security_inode_readlink(struct dentry *dentry)
2221 : {
2222 : return 0;
2223 : }
2224 :
2225 : static inline int security_inode_follow_link(struct dentry *dentry,
2226 : struct nameidata *nd)
2227 : {
2228 : return 0;
2229 : }
2230 :
2231 : static inline int security_inode_permission(struct inode *inode, int mask)
2232 : {
2233 : return 0;
2234 : }
2235 :
2236 : static inline int security_inode_setattr(struct dentry *dentry,
2237 : struct iattr *attr)
2238 : {
2239 : return 0;
2240 : }
2241 :
2242 : static inline int security_inode_getattr(struct vfsmount *mnt,
2243 : struct dentry *dentry)
2244 : {
2245 : return 0;
2246 : }
2247 :
2248 : static inline void security_inode_delete(struct inode *inode)
2249 : { }
2250 :
2251 : static inline int security_inode_setxattr(struct dentry *dentry,
2252 : const char *name, const void *value, size_t size, int flags)
2253 : {
2254 : return cap_inode_setxattr(dentry, name, value, size, flags);
2255 : }
2256 :
2257 : static inline void security_inode_post_setxattr(struct dentry *dentry,
2258 : const char *name, const void *value, size_t size, int flags)
2259 : { }
2260 :
2261 : static inline int security_inode_getxattr(struct dentry *dentry,
2262 : const char *name)
2263 : {
2264 : return 0;
2265 : }
2266 :
2267 : static inline int security_inode_listxattr(struct dentry *dentry)
2268 : {
2269 : return 0;
2270 : }
2271 :
2272 : static inline int security_inode_removexattr(struct dentry *dentry,
2273 : const char *name)
2274 : {
2275 : return cap_inode_removexattr(dentry, name);
2276 : }
2277 :
2278 : static inline int security_inode_need_killpriv(struct dentry *dentry)
2279 : {
2280 : return cap_inode_need_killpriv(dentry);
2281 : }
2282 :
2283 : static inline int security_inode_killpriv(struct dentry *dentry)
2284 : {
2285 : return cap_inode_killpriv(dentry);
2286 : }
2287 :
2288 : static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
2289 : {
2290 : return -EOPNOTSUPP;
2291 : }
2292 :
2293 : static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
2294 : {
2295 : return -EOPNOTSUPP;
2296 : }
2297 :
2298 : static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
2299 : {
2300 : return 0;
2301 : }
2302 :
2303 : static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
2304 : {
2305 : *secid = 0;
2306 : }
2307 :
2308 : static inline int security_file_permission(struct file *file, int mask)
2309 : {
2310 : return 0;
2311 : }
2312 :
2313 : static inline int security_file_alloc(struct file *file)
2314 : {
2315 : return 0;
2316 : }
2317 :
2318 : static inline void security_file_free(struct file *file)
2319 : { }
2320 :
2321 : static inline int security_file_ioctl(struct file *file, unsigned int cmd,
2322 : unsigned long arg)
2323 : {
2324 : return 0;
2325 : }
2326 :
2327 : static inline int security_file_mmap(struct file *file, unsigned long reqprot,
2328 : unsigned long prot,
2329 : unsigned long flags,
2330 : unsigned long addr,
2331 : unsigned long addr_only)
2332 : {
2333 : return cap_file_mmap(file, reqprot, prot, flags, addr, addr_only);
2334 : }
2335 :
2336 : static inline int security_file_mprotect(struct vm_area_struct *vma,
2337 : unsigned long reqprot,
2338 : unsigned long prot)
2339 : {
2340 : return 0;
2341 : }
2342 :
2343 : static inline int security_file_lock(struct file *file, unsigned int cmd)
2344 : {
2345 : return 0;
2346 : }
2347 :
2348 : static inline int security_file_fcntl(struct file *file, unsigned int cmd,
2349 : unsigned long arg)
2350 : {
2351 : return 0;
2352 : }
2353 :
2354 : static inline int security_file_set_fowner(struct file *file)
2355 : {
2356 : return 0;
2357 : }
2358 :
2359 : static inline int security_file_send_sigiotask(struct task_struct *tsk,
2360 : struct fown_struct *fown,
2361 : int sig)
2362 : {
2363 : return 0;
2364 : }
2365 :
2366 : static inline int security_file_receive(struct file *file)
2367 : {
2368 : return 0;
2369 : }
2370 :
2371 : static inline int security_dentry_open(struct file *file,
2372 : const struct cred *cred)
2373 : {
2374 : return 0;
2375 : }
2376 :
2377 : static inline int security_task_create(unsigned long clone_flags)
2378 : {
2379 : return 0;
2380 : }
2381 :
2382 : static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
2383 : {
2384 : return 0;
2385 : }
2386 :
2387 : static inline void security_cred_free(struct cred *cred)
2388 : { }
2389 :
2390 : static inline int security_prepare_creds(struct cred *new,
2391 : const struct cred *old,
2392 : gfp_t gfp)
2393 : {
2394 : return 0;
2395 : }
2396 :
2397 : static inline void security_commit_creds(struct cred *new,
2398 : const struct cred *old)
2399 : {
2400 : }
2401 :
2402 : static inline void security_transfer_creds(struct cred *new,
2403 : const struct cred *old)
2404 : {
2405 : }
2406 :
2407 : static inline int security_kernel_act_as(struct cred *cred, u32 secid)
2408 : {
2409 : return 0;
2410 : }
2411 :
2412 : static inline int security_kernel_create_files_as(struct cred *cred,
2413 : struct inode *inode)
2414 : {
2415 : return 0;
2416 : }
2417 :
2418 : static inline int security_kernel_module_request(char *kmod_name)
2419 : {
2420 : return 0;
2421 : }
2422 :
2423 : static inline int security_task_setuid(uid_t id0, uid_t id1, uid_t id2,
2424 : int flags)
2425 : {
2426 : return 0;
2427 : }
2428 :
2429 : static inline int security_task_fix_setuid(struct cred *new,
2430 : const struct cred *old,
2431 : int flags)
2432 : {
2433 : return cap_task_fix_setuid(new, old, flags);
2434 : }
2435 :
2436 : static inline int security_task_setgid(gid_t id0, gid_t id1, gid_t id2,
2437 : int flags)
2438 : {
2439 : return 0;
2440 : }
2441 :
2442 : static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
2443 : {
2444 : return 0;
2445 : }
2446 :
2447 : static inline int security_task_getpgid(struct task_struct *p)
2448 : {
2449 : return 0;
2450 : }
2451 :
2452 : static inline int security_task_getsid(struct task_struct *p)
2453 : {
2454 : return 0;
2455 : }
2456 :
2457 : static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
2458 : {
2459 : *secid = 0;
2460 : }
2461 :
2462 : static inline int security_task_setgroups(struct group_info *group_info)
2463 : {
2464 : return 0;
2465 : }
2466 :
2467 : static inline int security_task_setnice(struct task_struct *p, int nice)
2468 : {
2469 : return cap_task_setnice(p, nice);
2470 : }
2471 :
2472 : static inline int security_task_setioprio(struct task_struct *p, int ioprio)
2473 : {
2474 : return cap_task_setioprio(p, ioprio);
2475 : }
2476 :
2477 : static inline int security_task_getioprio(struct task_struct *p)
2478 : {
2479 : return 0;
2480 : }
2481 :
2482 : static inline int security_task_setrlimit(unsigned int resource,
2483 : struct rlimit *new_rlim)
2484 : {
2485 : return 0;
2486 : }
2487 :
2488 : static inline int security_task_setscheduler(struct task_struct *p,
2489 : int policy,
2490 : struct sched_param *lp)
2491 : {
2492 : return cap_task_setscheduler(p, policy, lp);
2493 : }
2494 :
2495 : static inline int security_task_getscheduler(struct task_struct *p)
2496 : {
2497 : return 0;
2498 : }
2499 :
2500 : static inline int security_task_movememory(struct task_struct *p)
2501 : {
2502 : return 0;
2503 : }
2504 :
2505 : static inline int security_task_kill(struct task_struct *p,
2506 : struct siginfo *info, int sig,
2507 : u32 secid)
2508 : {
2509 : return 0;
2510 : }
2511 :
2512 : static inline int security_task_wait(struct task_struct *p)
2513 : {
2514 : return 0;
2515 : }
2516 :
2517 : static inline int security_task_prctl(int option, unsigned long arg2,
2518 : unsigned long arg3,
2519 : unsigned long arg4,
2520 : unsigned long arg5)
2521 : {
2522 : return cap_task_prctl(option, arg2, arg3, arg3, arg5);
2523 : }
2524 :
2525 : static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
2526 : { }
2527 :
2528 : static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
2529 : short flag)
2530 : {
2531 : return 0;
2532 : }
2533 :
2534 : static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
2535 : {
2536 : *secid = 0;
2537 : }
2538 :
2539 : static inline int security_msg_msg_alloc(struct msg_msg *msg)
2540 : {
2541 : return 0;
2542 : }
2543 :
2544 : static inline void security_msg_msg_free(struct msg_msg *msg)
2545 : { }
2546 :
2547 : static inline int security_msg_queue_alloc(struct msg_queue *msq)
2548 : {
2549 : return 0;
2550 : }
2551 :
2552 : static inline void security_msg_queue_free(struct msg_queue *msq)
2553 : { }
2554 :
2555 : static inline int security_msg_queue_associate(struct msg_queue *msq,
2556 : int msqflg)
2557 : {
2558 : return 0;
2559 : }
2560 :
2561 : static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
2562 : {
2563 : return 0;
2564 : }
2565 :
2566 : static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
2567 : struct msg_msg *msg, int msqflg)
2568 : {
2569 : return 0;
2570 : }
2571 :
2572 : static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
2573 : struct msg_msg *msg,
2574 : struct task_struct *target,
2575 : long type, int mode)
2576 : {
2577 : return 0;
2578 : }
2579 :
2580 : static inline int security_shm_alloc(struct shmid_kernel *shp)
2581 : {
2582 : return 0;
2583 : }
2584 :
2585 : static inline void security_shm_free(struct shmid_kernel *shp)
2586 : { }
2587 :
2588 : static inline int security_shm_associate(struct shmid_kernel *shp,
2589 : int shmflg)
2590 : {
2591 : return 0;
2592 : }
2593 :
2594 : static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
2595 : {
2596 : return 0;
2597 : }
2598 :
2599 : static inline int security_shm_shmat(struct shmid_kernel *shp,
2600 : char __user *shmaddr, int shmflg)
2601 : {
2602 : return 0;
2603 : }
2604 :
2605 : static inline int security_sem_alloc(struct sem_array *sma)
2606 : {
2607 : return 0;
2608 : }
2609 :
2610 : static inline void security_sem_free(struct sem_array *sma)
2611 : { }
2612 :
2613 : static inline int security_sem_associate(struct sem_array *sma, int semflg)
2614 : {
2615 : return 0;
2616 : }
2617 :
2618 : static inline int security_sem_semctl(struct sem_array *sma, int cmd)
2619 : {
2620 : return 0;
2621 : }
2622 :
2623 : static inline int security_sem_semop(struct sem_array *sma,
2624 : struct sembuf *sops, unsigned nsops,
2625 : int alter)
2626 : {
2627 : return 0;
2628 : }
2629 :
2630 : static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
2631 : { }
2632 :
2633 : static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
2634 : {
2635 : return -EINVAL;
2636 : }
2637 :
2638 : static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2639 : {
2640 : return -EINVAL;
2641 : }
2642 :
2643 : static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
2644 : {
2645 : return cap_netlink_send(sk, skb);
2646 : }
2647 :
2648 : static inline int security_netlink_recv(struct sk_buff *skb, int cap)
2649 : {
2650 : return cap_netlink_recv(skb, cap);
2651 : }
2652 :
2653 : static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2654 : {
2655 : return -EOPNOTSUPP;
2656 : }
2657 :
2658 : static inline int security_secctx_to_secid(const char *secdata,
2659 : u32 seclen,
2660 : u32 *secid)
2661 : {
2662 : return -EOPNOTSUPP;
2663 : }
2664 :
2665 : static inline void security_release_secctx(char *secdata, u32 seclen)
2666 : {
2667 : }
2668 :
2669 : static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
2670 : {
2671 : return -EOPNOTSUPP;
2672 : }
2673 : static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
2674 : {
2675 : return -EOPNOTSUPP;
2676 : }
2677 : static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
2678 : {
2679 : return -EOPNOTSUPP;
2680 : }
2681 : #endif /* CONFIG_SECURITY */
2682 :
2683 : #ifdef CONFIG_SECURITY_NETWORK
2684 :
2685 : int security_unix_stream_connect(struct socket *sock, struct socket *other,
2686 : struct sock *newsk);
2687 : int security_unix_may_send(struct socket *sock, struct socket *other);
2688 : int security_socket_create(int family, int type, int protocol, int kern);
2689 : int security_socket_post_create(struct socket *sock, int family,
2690 : int type, int protocol, int kern);
2691 : int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
2692 : int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
2693 : int security_socket_listen(struct socket *sock, int backlog);
2694 : int security_socket_accept(struct socket *sock, struct socket *newsock);
2695 : int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
2696 : int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2697 : int size, int flags);
2698 : int security_socket_getsockname(struct socket *sock);
2699 : int security_socket_getpeername(struct socket *sock);
2700 : int security_socket_getsockopt(struct socket *sock, int level, int optname);
2701 : int security_socket_setsockopt(struct socket *sock, int level, int optname);
2702 : int security_socket_shutdown(struct socket *sock, int how);
2703 : int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
2704 : int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2705 : int __user *optlen, unsigned len);
2706 : int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
2707 : int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
2708 : void security_sk_free(struct sock *sk);
2709 : void security_sk_clone(const struct sock *sk, struct sock *newsk);
2710 : void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
2711 : void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
2712 : void security_sock_graft(struct sock*sk, struct socket *parent);
2713 : int security_inet_conn_request(struct sock *sk,
2714 : struct sk_buff *skb, struct request_sock *req);
2715 : void security_inet_csk_clone(struct sock *newsk,
2716 : const struct request_sock *req);
2717 : void security_inet_conn_established(struct sock *sk,
2718 : struct sk_buff *skb);
2719 : int security_tun_dev_create(void);
2720 : void security_tun_dev_post_create(struct sock *sk);
2721 : int security_tun_dev_attach(struct sock *sk);
2722 :
2723 : #else /* CONFIG_SECURITY_NETWORK */
2724 : static inline int security_unix_stream_connect(struct socket *sock,
2725 : struct socket *other,
2726 : struct sock *newsk)
2727 : {
2728 : return 0;
2729 : }
2730 :
2731 : static inline int security_unix_may_send(struct socket *sock,
2732 : struct socket *other)
2733 : {
2734 : return 0;
2735 : }
2736 :
2737 : static inline int security_socket_create(int family, int type,
2738 : int protocol, int kern)
2739 : {
2740 : return 0;
2741 : }
2742 :
2743 : static inline int security_socket_post_create(struct socket *sock,
2744 : int family,
2745 : int type,
2746 : int protocol, int kern)
2747 : {
2748 : return 0;
2749 : }
2750 :
2751 : static inline int security_socket_bind(struct socket *sock,
2752 : struct sockaddr *address,
2753 : int addrlen)
2754 : {
2755 : return 0;
2756 : }
2757 :
2758 : static inline int security_socket_connect(struct socket *sock,
2759 : struct sockaddr *address,
2760 : int addrlen)
2761 : {
2762 : return 0;
2763 : }
2764 :
2765 : static inline int security_socket_listen(struct socket *sock, int backlog)
2766 : {
2767 : return 0;
2768 : }
2769 :
2770 : static inline int security_socket_accept(struct socket *sock,
2771 : struct socket *newsock)
2772 : {
2773 : return 0;
2774 : }
2775 :
2776 : static inline int security_socket_sendmsg(struct socket *sock,
2777 : struct msghdr *msg, int size)
2778 : {
2779 : return 0;
2780 : }
2781 :
2782 : static inline int security_socket_recvmsg(struct socket *sock,
2783 : struct msghdr *msg, int size,
2784 : int flags)
2785 : {
2786 : return 0;
2787 : }
2788 :
2789 : static inline int security_socket_getsockname(struct socket *sock)
2790 : {
2791 : return 0;
2792 : }
2793 :
2794 : static inline int security_socket_getpeername(struct socket *sock)
2795 : {
2796 : return 0;
2797 : }
2798 :
2799 : static inline int security_socket_getsockopt(struct socket *sock,
2800 : int level, int optname)
2801 : {
2802 : return 0;
2803 : }
2804 :
2805 : static inline int security_socket_setsockopt(struct socket *sock,
2806 : int level, int optname)
2807 : {
2808 : return 0;
2809 : }
2810 :
2811 : static inline int security_socket_shutdown(struct socket *sock, int how)
2812 : {
2813 : return 0;
2814 : }
2815 : static inline int security_sock_rcv_skb(struct sock *sk,
2816 : struct sk_buff *skb)
2817 : {
2818 : return 0;
2819 : }
2820 :
2821 : static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2822 : int __user *optlen, unsigned len)
2823 : {
2824 : return -ENOPROTOOPT;
2825 : }
2826 :
2827 : static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
2828 : {
2829 : return -ENOPROTOOPT;
2830 : }
2831 :
2832 : static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2833 : {
2834 : return 0;
2835 : }
2836 :
2837 : static inline void security_sk_free(struct sock *sk)
2838 : {
2839 : }
2840 :
2841 : static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
2842 : {
2843 : }
2844 :
2845 : static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
2846 : {
2847 : }
2848 :
2849 : static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2850 : {
2851 : }
2852 :
2853 : static inline void security_sock_graft(struct sock *sk, struct socket *parent)
2854 : {
2855 : }
2856 :
2857 : static inline int security_inet_conn_request(struct sock *sk,
2858 : struct sk_buff *skb, struct request_sock *req)
2859 : {
2860 : return 0;
2861 : }
2862 :
2863 : static inline void security_inet_csk_clone(struct sock *newsk,
2864 : const struct request_sock *req)
2865 : {
2866 : }
2867 :
2868 : static inline void security_inet_conn_established(struct sock *sk,
2869 : struct sk_buff *skb)
2870 : {
2871 : }
2872 :
2873 : static inline int security_tun_dev_create(void)
2874 : {
2875 : return 0;
2876 : }
2877 :
2878 : static inline void security_tun_dev_post_create(struct sock *sk)
2879 : {
2880 : }
2881 :
2882 : static inline int security_tun_dev_attach(struct sock *sk)
2883 : {
2884 : return 0;
2885 : }
2886 : #endif /* CONFIG_SECURITY_NETWORK */
2887 :
2888 : #ifdef CONFIG_SECURITY_NETWORK_XFRM
2889 :
2890 : int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx);
2891 : int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
2892 : void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
2893 : int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
2894 : int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
2895 : int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2896 : struct xfrm_sec_ctx *polsec, u32 secid);
2897 : int security_xfrm_state_delete(struct xfrm_state *x);
2898 : void security_xfrm_state_free(struct xfrm_state *x);
2899 : int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
2900 : int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2901 : struct xfrm_policy *xp, struct flowi *fl);
2902 : int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
2903 : void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
2904 :
2905 : #else /* CONFIG_SECURITY_NETWORK_XFRM */
2906 :
2907 : static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
2908 : {
2909 : return 0;
2910 : }
2911 :
2912 : static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
2913 : {
2914 : return 0;
2915 : }
2916 :
2917 : static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
2918 : {
2919 : }
2920 :
2921 : static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
2922 : {
2923 : return 0;
2924 : }
2925 :
2926 : static inline int security_xfrm_state_alloc(struct xfrm_state *x,
2927 : struct xfrm_user_sec_ctx *sec_ctx)
2928 : {
2929 : return 0;
2930 : }
2931 :
2932 : static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2933 : struct xfrm_sec_ctx *polsec, u32 secid)
2934 : {
2935 : return 0;
2936 : }
2937 :
2938 : static inline void security_xfrm_state_free(struct xfrm_state *x)
2939 : {
2940 : }
2941 :
2942 : static inline int security_xfrm_state_delete(struct xfrm_state *x)
2943 : {
2944 : return 0;
2945 : }
2946 :
2947 : static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
2948 : {
2949 : return 0;
2950 : }
2951 :
2952 : static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2953 : struct xfrm_policy *xp, struct flowi *fl)
2954 : {
2955 : return 1;
2956 : }
2957 :
2958 : static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
2959 : {
2960 : return 0;
2961 : }
2962 :
2963 : static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2964 : {
2965 : }
2966 :
2967 : #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2968 :
2969 : #ifdef CONFIG_SECURITY_PATH
2970 : int security_path_unlink(struct path *dir, struct dentry *dentry);
2971 : int security_path_mkdir(struct path *dir, struct dentry *dentry, int mode);
2972 : int security_path_rmdir(struct path *dir, struct dentry *dentry);
2973 : int security_path_mknod(struct path *dir, struct dentry *dentry, int mode,
2974 : unsigned int dev);
2975 : int security_path_truncate(struct path *path, loff_t length,
2976 : unsigned int time_attrs);
2977 : int security_path_symlink(struct path *dir, struct dentry *dentry,
2978 : const char *old_name);
2979 : int security_path_link(struct dentry *old_dentry, struct path *new_dir,
2980 : struct dentry *new_dentry);
2981 : int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
2982 : struct path *new_dir, struct dentry *new_dentry);
2983 : int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
2984 : mode_t mode);
2985 : int security_path_chown(struct path *path, uid_t uid, gid_t gid);
2986 : int security_path_chroot(struct path *path);
2987 : #else /* CONFIG_SECURITY_PATH */
2988 : static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
2989 : {
2990 : return 0;
2991 : }
2992 :
2993 : static inline int security_path_mkdir(struct path *dir, struct dentry *dentry,
2994 : int mode)
2995 : {
2996 : return 0;
2997 : }
2998 :
2999 : static inline int security_path_rmdir(struct path *dir, struct dentry *dentry)
3000 : {
3001 : return 0;
3002 : }
3003 :
3004 : static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
3005 : int mode, unsigned int dev)
3006 : {
3007 : return 0;
3008 : }
3009 :
3010 : static inline int security_path_truncate(struct path *path, loff_t length,
3011 : unsigned int time_attrs)
3012 : {
3013 : return 0;
3014 : }
3015 :
3016 : static inline int security_path_symlink(struct path *dir, struct dentry *dentry,
3017 : const char *old_name)
3018 : {
3019 : return 0;
3020 : }
3021 :
3022 : static inline int security_path_link(struct dentry *old_dentry,
3023 : struct path *new_dir,
3024 : struct dentry *new_dentry)
3025 : {
3026 : return 0;
3027 : }
3028 :
3029 : static inline int security_path_rename(struct path *old_dir,
3030 : struct dentry *old_dentry,
3031 : struct path *new_dir,
3032 : struct dentry *new_dentry)
3033 : {
3034 : return 0;
3035 : }
3036 :
3037 : static inline int security_path_chmod(struct dentry *dentry,
3038 : struct vfsmount *mnt,
3039 : mode_t mode)
3040 : {
3041 : return 0;
3042 : }
3043 :
3044 : static inline int security_path_chown(struct path *path, uid_t uid, gid_t gid)
3045 : {
3046 : return 0;
3047 : }
3048 :
3049 : static inline int security_path_chroot(struct path *path)
3050 : {
3051 : return 0;
3052 : }
3053 : #endif /* CONFIG_SECURITY_PATH */
3054 :
3055 : #ifdef CONFIG_KEYS
3056 : #ifdef CONFIG_SECURITY
3057 :
3058 : int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
3059 : void security_key_free(struct key *key);
3060 : int security_key_permission(key_ref_t key_ref,
3061 : const struct cred *cred, key_perm_t perm);
3062 : int security_key_getsecurity(struct key *key, char **_buffer);
3063 : int security_key_session_to_parent(const struct cred *cred,
3064 : const struct cred *parent_cred,
3065 : struct key *key);
3066 :
3067 : #else
3068 :
3069 : static inline int security_key_alloc(struct key *key,
3070 : const struct cred *cred,
3071 : unsigned long flags)
3072 : {
3073 : return 0;
3074 : }
3075 :
3076 : static inline void security_key_free(struct key *key)
3077 : {
3078 : }
3079 :
3080 : static inline int security_key_permission(key_ref_t key_ref,
3081 : const struct cred *cred,
3082 : key_perm_t perm)
3083 : {
3084 : return 0;
3085 : }
3086 :
3087 : static inline int security_key_getsecurity(struct key *key, char **_buffer)
3088 : {
3089 : *_buffer = NULL;
3090 : return 0;
3091 : }
3092 :
3093 : static inline int security_key_session_to_parent(const struct cred *cred,
3094 : const struct cred *parent_cred,
3095 : struct key *key)
3096 : {
3097 : return 0;
3098 : }
3099 :
3100 : #endif
3101 : #endif /* CONFIG_KEYS */
3102 :
3103 : #ifdef CONFIG_AUDIT
3104 : #ifdef CONFIG_SECURITY
3105 : int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
3106 : int security_audit_rule_known(struct audit_krule *krule);
3107 : int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
3108 : struct audit_context *actx);
3109 : void security_audit_rule_free(void *lsmrule);
3110 :
3111 : #else
3112 :
3113 : static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
3114 : void **lsmrule)
3115 : {
3116 : return 0;
3117 : }
3118 :
3119 : static inline int security_audit_rule_known(struct audit_krule *krule)
3120 : {
3121 : return 0;
3122 : }
3123 :
3124 : static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
3125 : void *lsmrule, struct audit_context *actx)
3126 : {
3127 : return 0;
3128 : }
3129 :
3130 : static inline void security_audit_rule_free(void *lsmrule)
3131 : { }
3132 :
3133 : #endif /* CONFIG_SECURITY */
3134 : #endif /* CONFIG_AUDIT */
3135 :
3136 : #ifdef CONFIG_SECURITYFS
3137 :
3138 : extern struct dentry *securityfs_create_file(const char *name, mode_t mode,
3139 : struct dentry *parent, void *data,
3140 : const struct file_operations *fops);
3141 : extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
3142 : extern void securityfs_remove(struct dentry *dentry);
3143 :
3144 : #else /* CONFIG_SECURITYFS */
3145 :
3146 : static inline struct dentry *securityfs_create_dir(const char *name,
3147 : struct dentry *parent)
3148 : {
3149 : return ERR_PTR(-ENODEV);
3150 : }
3151 :
3152 : static inline struct dentry *securityfs_create_file(const char *name,
3153 : mode_t mode,
3154 : struct dentry *parent,
3155 : void *data,
3156 : const struct file_operations *fops)
3157 : {
3158 : return ERR_PTR(-ENODEV);
3159 : }
3160 :
3161 : static inline void securityfs_remove(struct dentry *dentry)
3162 : {}
3163 :
3164 : #endif
3165 :
3166 : #ifdef CONFIG_SECURITY
3167 :
3168 : static inline char *alloc_secdata(void)
3169 : {
3170 : return (char *)get_zeroed_page(GFP_KERNEL);
3171 : }
3172 :
3173 : static inline void free_secdata(void *secdata)
3174 : {
3175 : free_page((unsigned long)secdata);
3176 : }
3177 :
3178 : #else
3179 :
3180 : static inline char *alloc_secdata(void)
3181 : {
3182 : return (char *)1;
3183 : }
3184 :
3185 : static inline void free_secdata(void *secdata)
3186 : { }
3187 : #endif /* CONFIG_SECURITY */
3188 :
3189 : #endif /* ! __LINUX_SECURITY_H */
3190 :
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