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