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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/key.h>
26 : : #include <linux/capability.h>
27 : : #include <linux/slab.h>
28 : : #include <linux/err.h>
29 : : #include <linux/string.h>
30 : :
31 : : struct linux_binprm;
32 : : struct cred;
33 : : struct rlimit;
34 : : struct siginfo;
35 : : struct sem_array;
36 : : struct sembuf;
37 : : struct kern_ipc_perm;
38 : : struct audit_context;
39 : : struct super_block;
40 : : struct inode;
41 : : struct dentry;
42 : : struct file;
43 : : struct vfsmount;
44 : : struct path;
45 : : struct qstr;
46 : : struct nameidata;
47 : : struct iattr;
48 : : struct fown_struct;
49 : : struct file_operations;
50 : : struct shmid_kernel;
51 : : struct msg_msg;
52 : : struct msg_queue;
53 : : struct xattr;
54 : : struct xfrm_sec_ctx;
55 : : struct mm_struct;
56 : :
57 : : /* Maximum number of letters for an LSM name string */
58 : : #define SECURITY_NAME_MAX 10
59 : :
60 : : /* If capable should audit the security request */
61 : : #define SECURITY_CAP_NOAUDIT 0
62 : : #define SECURITY_CAP_AUDIT 1
63 : :
64 : : /* LSM Agnostic defines for sb_set_mnt_opts */
65 : : #define SECURITY_LSM_NATIVE_LABELS 1
66 : :
67 : : struct ctl_table;
68 : : struct audit_krule;
69 : : struct user_namespace;
70 : : struct timezone;
71 : :
72 : : /*
73 : : * These functions are in security/capability.c and are used
74 : : * as the default capabilities functions
75 : : */
76 : : extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
77 : : int cap, int audit);
78 : : extern int cap_settime(const struct timespec *ts, const struct timezone *tz);
79 : : extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
80 : : extern int cap_ptrace_traceme(struct task_struct *parent);
81 : : extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
82 : : extern int cap_capset(struct cred *new, const struct cred *old,
83 : : const kernel_cap_t *effective,
84 : : const kernel_cap_t *inheritable,
85 : : const kernel_cap_t *permitted);
86 : : extern int cap_bprm_set_creds(struct linux_binprm *bprm);
87 : : extern int cap_bprm_secureexec(struct linux_binprm *bprm);
88 : : extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
89 : : const void *value, size_t size, int flags);
90 : : extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
91 : : extern int cap_inode_need_killpriv(struct dentry *dentry);
92 : : extern int cap_inode_killpriv(struct dentry *dentry);
93 : : extern int cap_mmap_addr(unsigned long addr);
94 : : extern int cap_mmap_file(struct file *file, unsigned long reqprot,
95 : : unsigned long prot, unsigned long flags);
96 : : extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
97 : : extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
98 : : unsigned long arg4, unsigned long arg5);
99 : : extern int cap_task_setscheduler(struct task_struct *p);
100 : : extern int cap_task_setioprio(struct task_struct *p, int ioprio);
101 : : extern int cap_task_setnice(struct task_struct *p, int nice);
102 : : extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
103 : :
104 : : struct msghdr;
105 : : struct sk_buff;
106 : : struct sock;
107 : : struct sockaddr;
108 : : struct socket;
109 : : struct flowi;
110 : : struct dst_entry;
111 : : struct xfrm_selector;
112 : : struct xfrm_policy;
113 : : struct xfrm_state;
114 : : struct xfrm_user_sec_ctx;
115 : : struct seq_file;
116 : :
117 : : extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
118 : :
119 : : void reset_security_ops(void);
120 : :
121 : : #ifdef CONFIG_MMU
122 : : extern unsigned long mmap_min_addr;
123 : : extern unsigned long dac_mmap_min_addr;
124 : : #else
125 : : #define mmap_min_addr 0UL
126 : : #define dac_mmap_min_addr 0UL
127 : : #endif
128 : :
129 : : /*
130 : : * Values used in the task_security_ops calls
131 : : */
132 : : /* setuid or setgid, id0 == uid or gid */
133 : : #define LSM_SETID_ID 1
134 : :
135 : : /* setreuid or setregid, id0 == real, id1 == eff */
136 : : #define LSM_SETID_RE 2
137 : :
138 : : /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
139 : : #define LSM_SETID_RES 4
140 : :
141 : : /* setfsuid or setfsgid, id0 == fsuid or fsgid */
142 : : #define LSM_SETID_FS 8
143 : :
144 : : /* forward declares to avoid warnings */
145 : : struct sched_param;
146 : : struct request_sock;
147 : :
148 : : /* bprm->unsafe reasons */
149 : : #define LSM_UNSAFE_SHARE 1
150 : : #define LSM_UNSAFE_PTRACE 2
151 : : #define LSM_UNSAFE_PTRACE_CAP 4
152 : : #define LSM_UNSAFE_NO_NEW_PRIVS 8
153 : :
154 : : #ifdef CONFIG_MMU
155 : : extern int mmap_min_addr_handler(struct ctl_table *table, int write,
156 : : void __user *buffer, size_t *lenp, loff_t *ppos);
157 : : #endif
158 : :
159 : : /* security_inode_init_security callback function to write xattrs */
160 : : typedef int (*initxattrs) (struct inode *inode,
161 : : const struct xattr *xattr_array, void *fs_data);
162 : :
163 : : #ifdef CONFIG_SECURITY
164 : :
165 : : struct security_mnt_opts {
166 : : char **mnt_opts;
167 : : int *mnt_opts_flags;
168 : : int num_mnt_opts;
169 : : };
170 : :
171 : : static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
172 : : {
173 : 0 : opts->mnt_opts = NULL;
174 : 0 : opts->mnt_opts_flags = NULL;
175 : 0 : opts->num_mnt_opts = 0;
176 : : }
177 : :
178 : : static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
179 : : {
180 : : int i;
181 [ # # ][ # # ]: 0 : if (opts->mnt_opts)
[ # # ][ # # ]
[ # # ]
182 [ # # ][ # # ]: 0 : for (i = 0; i < opts->num_mnt_opts; i++)
[ # # ][ # # ]
183 : 0 : kfree(opts->mnt_opts[i]);
184 : 0 : kfree(opts->mnt_opts);
185 : 0 : opts->mnt_opts = NULL;
186 : 0 : kfree(opts->mnt_opts_flags);
187 : 0 : opts->mnt_opts_flags = NULL;
188 : 0 : opts->num_mnt_opts = 0;
189 : : }
190 : :
191 : : /**
192 : : * struct security_operations - main security structure
193 : : *
194 : : * Security module identifier.
195 : : *
196 : : * @name:
197 : : * A string that acts as a unique identifier for the LSM with max number
198 : : * of characters = SECURITY_NAME_MAX.
199 : : *
200 : : * Security hooks for program execution operations.
201 : : *
202 : : * @bprm_set_creds:
203 : : * Save security information in the bprm->security field, typically based
204 : : * on information about the bprm->file, for later use by the apply_creds
205 : : * hook. This hook may also optionally check permissions (e.g. for
206 : : * transitions between security domains).
207 : : * This hook may be called multiple times during a single execve, e.g. for
208 : : * interpreters. The hook can tell whether it has already been called by
209 : : * checking to see if @bprm->security is non-NULL. If so, then the hook
210 : : * may decide either to retain the security information saved earlier or
211 : : * to replace it.
212 : : * @bprm contains the linux_binprm structure.
213 : : * Return 0 if the hook is successful and permission is granted.
214 : : * @bprm_check_security:
215 : : * This hook mediates the point when a search for a binary handler will
216 : : * begin. It allows a check the @bprm->security value which is set in the
217 : : * preceding set_creds call. The primary difference from set_creds is
218 : : * that the argv list and envp list are reliably available in @bprm. This
219 : : * hook may be called multiple times during a single execve; and in each
220 : : * pass set_creds is called first.
221 : : * @bprm contains the linux_binprm structure.
222 : : * Return 0 if the hook is successful and permission is granted.
223 : : * @bprm_committing_creds:
224 : : * Prepare to install the new security attributes of a process being
225 : : * transformed by an execve operation, based on the old credentials
226 : : * pointed to by @current->cred and the information set in @bprm->cred by
227 : : * the bprm_set_creds hook. @bprm points to the linux_binprm structure.
228 : : * This hook is a good place to perform state changes on the process such
229 : : * as closing open file descriptors to which access will no longer be
230 : : * granted when the attributes are changed. This is called immediately
231 : : * before commit_creds().
232 : : * @bprm_committed_creds:
233 : : * Tidy up after the installation of the new security attributes of a
234 : : * process being transformed by an execve operation. The new credentials
235 : : * have, by this point, been set to @current->cred. @bprm points to the
236 : : * linux_binprm structure. This hook is a good place to perform state
237 : : * changes on the process such as clearing out non-inheritable signal
238 : : * state. This is called immediately after commit_creds().
239 : : * @bprm_secureexec:
240 : : * Return a boolean value (0 or 1) indicating whether a "secure exec"
241 : : * is required. The flag is passed in the auxiliary table
242 : : * on the initial stack to the ELF interpreter to indicate whether libc
243 : : * should enable secure mode.
244 : : * @bprm contains the linux_binprm structure.
245 : : *
246 : : * Security hooks for filesystem operations.
247 : : *
248 : : * @sb_alloc_security:
249 : : * Allocate and attach a security structure to the sb->s_security field.
250 : : * The s_security field is initialized to NULL when the structure is
251 : : * allocated.
252 : : * @sb contains the super_block structure to be modified.
253 : : * Return 0 if operation was successful.
254 : : * @sb_free_security:
255 : : * Deallocate and clear the sb->s_security field.
256 : : * @sb contains the super_block structure to be modified.
257 : : * @sb_statfs:
258 : : * Check permission before obtaining filesystem statistics for the @mnt
259 : : * mountpoint.
260 : : * @dentry is a handle on the superblock for the filesystem.
261 : : * Return 0 if permission is granted.
262 : : * @sb_mount:
263 : : * Check permission before an object specified by @dev_name is mounted on
264 : : * the mount point named by @nd. For an ordinary mount, @dev_name
265 : : * identifies a device if the file system type requires a device. For a
266 : : * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a
267 : : * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
268 : : * pathname of the object being mounted.
269 : : * @dev_name contains the name for object being mounted.
270 : : * @path contains the path for mount point object.
271 : : * @type contains the filesystem type.
272 : : * @flags contains the mount flags.
273 : : * @data contains the filesystem-specific data.
274 : : * Return 0 if permission is granted.
275 : : * @sb_copy_data:
276 : : * Allow mount option data to be copied prior to parsing by the filesystem,
277 : : * so that the security module can extract security-specific mount
278 : : * options cleanly (a filesystem may modify the data e.g. with strsep()).
279 : : * This also allows the original mount data to be stripped of security-
280 : : * specific options to avoid having to make filesystems aware of them.
281 : : * @type the type of filesystem being mounted.
282 : : * @orig the original mount data copied from userspace.
283 : : * @copy copied data which will be passed to the security module.
284 : : * Returns 0 if the copy was successful.
285 : : * @sb_remount:
286 : : * Extracts security system specific mount options and verifies no changes
287 : : * are being made to those options.
288 : : * @sb superblock being remounted
289 : : * @data contains the filesystem-specific data.
290 : : * Return 0 if permission is granted.
291 : : * @sb_umount:
292 : : * Check permission before the @mnt file system is unmounted.
293 : : * @mnt contains the mounted file system.
294 : : * @flags contains the unmount flags, e.g. MNT_FORCE.
295 : : * Return 0 if permission is granted.
296 : : * @sb_pivotroot:
297 : : * Check permission before pivoting the root filesystem.
298 : : * @old_path contains the path for the new location of the current root (put_old).
299 : : * @new_path contains the path for the new root (new_root).
300 : : * Return 0 if permission is granted.
301 : : * @sb_set_mnt_opts:
302 : : * Set the security relevant mount options used for a superblock
303 : : * @sb the superblock to set security mount options for
304 : : * @opts binary data structure containing all lsm mount data
305 : : * @sb_clone_mnt_opts:
306 : : * Copy all security options from a given superblock to another
307 : : * @oldsb old superblock which contain information to clone
308 : : * @newsb new superblock which needs filled in
309 : : * @sb_parse_opts_str:
310 : : * Parse a string of security data filling in the opts structure
311 : : * @options string containing all mount options known by the LSM
312 : : * @opts binary data structure usable by the LSM
313 : : * @dentry_init_security:
314 : : * Compute a context for a dentry as the inode is not yet available
315 : : * since NFSv4 has no label backed by an EA anyway.
316 : : * @dentry dentry to use in calculating the context.
317 : : * @mode mode used to determine resource type.
318 : : * @name name of the last path component used to create file
319 : : * @ctx pointer to place the pointer to the resulting context in.
320 : : * @ctxlen point to place the length of the resulting context.
321 : : *
322 : : *
323 : : * Security hooks for inode operations.
324 : : *
325 : : * @inode_alloc_security:
326 : : * Allocate and attach a security structure to @inode->i_security. The
327 : : * i_security field is initialized to NULL when the inode structure is
328 : : * allocated.
329 : : * @inode contains the inode structure.
330 : : * Return 0 if operation was successful.
331 : : * @inode_free_security:
332 : : * @inode contains the inode structure.
333 : : * Deallocate the inode security structure and set @inode->i_security to
334 : : * NULL.
335 : : * @inode_init_security:
336 : : * Obtain the security attribute name suffix and value to set on a newly
337 : : * created inode and set up the incore security field for the new inode.
338 : : * This hook is called by the fs code as part of the inode creation
339 : : * transaction and provides for atomic labeling of the inode, unlike
340 : : * the post_create/mkdir/... hooks called by the VFS. The hook function
341 : : * is expected to allocate the name and value via kmalloc, with the caller
342 : : * being responsible for calling kfree after using them.
343 : : * If the security module does not use security attributes or does
344 : : * not wish to put a security attribute on this particular inode,
345 : : * then it should return -EOPNOTSUPP to skip this processing.
346 : : * @inode contains the inode structure of the newly created inode.
347 : : * @dir contains the inode structure of the parent directory.
348 : : * @qstr contains the last path component of the new object
349 : : * @name will be set to the allocated name suffix (e.g. selinux).
350 : : * @value will be set to the allocated attribute value.
351 : : * @len will be set to the length of the value.
352 : : * Returns 0 if @name and @value have been successfully set,
353 : : * -EOPNOTSUPP if no security attribute is needed, or
354 : : * -ENOMEM on memory allocation failure.
355 : : * @inode_create:
356 : : * Check permission to create a regular file.
357 : : * @dir contains inode structure of the parent of the new file.
358 : : * @dentry contains the dentry structure for the file to be created.
359 : : * @mode contains the file mode of the file to be created.
360 : : * Return 0 if permission is granted.
361 : : * @inode_link:
362 : : * Check permission before creating a new hard link to a file.
363 : : * @old_dentry contains the dentry structure for an existing link to the file.
364 : : * @dir contains the inode structure of the parent directory of the new link.
365 : : * @new_dentry contains the dentry structure for the new link.
366 : : * Return 0 if permission is granted.
367 : : * @path_link:
368 : : * Check permission before creating a new hard link to a file.
369 : : * @old_dentry contains the dentry structure for an existing link
370 : : * to the file.
371 : : * @new_dir contains the path structure of the parent directory of
372 : : * the new link.
373 : : * @new_dentry contains the dentry structure for the new link.
374 : : * Return 0 if permission is granted.
375 : : * @inode_unlink:
376 : : * Check the permission to remove a hard link to a file.
377 : : * @dir contains the inode structure of parent directory of the file.
378 : : * @dentry contains the dentry structure for file to be unlinked.
379 : : * Return 0 if permission is granted.
380 : : * @path_unlink:
381 : : * Check the permission to remove a hard link to a file.
382 : : * @dir contains the path structure of parent directory of the file.
383 : : * @dentry contains the dentry structure for file to be unlinked.
384 : : * Return 0 if permission is granted.
385 : : * @inode_symlink:
386 : : * Check the permission to create a symbolic link to a file.
387 : : * @dir contains the inode structure of parent directory of the symbolic link.
388 : : * @dentry contains the dentry structure of the symbolic link.
389 : : * @old_name contains the pathname of file.
390 : : * Return 0 if permission is granted.
391 : : * @path_symlink:
392 : : * Check the permission to create a symbolic link to a file.
393 : : * @dir contains the path structure of parent directory of
394 : : * the symbolic link.
395 : : * @dentry contains the dentry structure of the symbolic link.
396 : : * @old_name contains the pathname of file.
397 : : * Return 0 if permission is granted.
398 : : * @inode_mkdir:
399 : : * Check permissions to create a new directory in the existing directory
400 : : * associated with inode structure @dir.
401 : : * @dir contains the inode structure of parent of the directory to be created.
402 : : * @dentry contains the dentry structure of new directory.
403 : : * @mode contains the mode of new directory.
404 : : * Return 0 if permission is granted.
405 : : * @path_mkdir:
406 : : * Check permissions to create a new directory in the existing directory
407 : : * associated with path structure @path.
408 : : * @dir contains the path structure of parent of the directory
409 : : * to be created.
410 : : * @dentry contains the dentry structure of new directory.
411 : : * @mode contains the mode of new directory.
412 : : * Return 0 if permission is granted.
413 : : * @inode_rmdir:
414 : : * Check the permission to remove a directory.
415 : : * @dir contains the inode structure of parent of the directory to be removed.
416 : : * @dentry contains the dentry structure of directory to be removed.
417 : : * Return 0 if permission is granted.
418 : : * @path_rmdir:
419 : : * Check the permission to remove a directory.
420 : : * @dir contains the path structure of parent of the directory to be
421 : : * removed.
422 : : * @dentry contains the dentry structure of directory to be removed.
423 : : * Return 0 if permission is granted.
424 : : * @inode_mknod:
425 : : * Check permissions when creating a special file (or a socket or a fifo
426 : : * file created via the mknod system call). Note that if mknod operation
427 : : * is being done for a regular file, then the create hook will be called
428 : : * and not this hook.
429 : : * @dir contains the inode structure of parent of the new file.
430 : : * @dentry contains the dentry structure of the new file.
431 : : * @mode contains the mode of the new file.
432 : : * @dev contains the device number.
433 : : * Return 0 if permission is granted.
434 : : * @path_mknod:
435 : : * Check permissions when creating a file. Note that this hook is called
436 : : * even if mknod operation is being done for a regular file.
437 : : * @dir contains the path structure of parent of the new file.
438 : : * @dentry contains the dentry structure of the new file.
439 : : * @mode contains the mode of the new file.
440 : : * @dev contains the undecoded device number. Use new_decode_dev() to get
441 : : * the decoded device number.
442 : : * Return 0 if permission is granted.
443 : : * @inode_rename:
444 : : * Check for permission to rename a file or directory.
445 : : * @old_dir contains the inode structure for parent of the old link.
446 : : * @old_dentry contains the dentry structure of the old link.
447 : : * @new_dir contains the inode structure for parent of the new link.
448 : : * @new_dentry contains the dentry structure of the new link.
449 : : * Return 0 if permission is granted.
450 : : * @path_rename:
451 : : * Check for permission to rename a file or directory.
452 : : * @old_dir contains the path structure for parent of the old link.
453 : : * @old_dentry contains the dentry structure of the old link.
454 : : * @new_dir contains the path structure for parent of the new link.
455 : : * @new_dentry contains the dentry structure of the new link.
456 : : * Return 0 if permission is granted.
457 : : * @path_chmod:
458 : : * Check for permission to change DAC's permission of a file or directory.
459 : : * @dentry contains the dentry structure.
460 : : * @mnt contains the vfsmnt structure.
461 : : * @mode contains DAC's mode.
462 : : * Return 0 if permission is granted.
463 : : * @path_chown:
464 : : * Check for permission to change owner/group of a file or directory.
465 : : * @path contains the path structure.
466 : : * @uid contains new owner's ID.
467 : : * @gid contains new group's ID.
468 : : * Return 0 if permission is granted.
469 : : * @path_chroot:
470 : : * Check for permission to change root directory.
471 : : * @path contains the path structure.
472 : : * Return 0 if permission is granted.
473 : : * @inode_readlink:
474 : : * Check the permission to read the symbolic link.
475 : : * @dentry contains the dentry structure for the file link.
476 : : * Return 0 if permission is granted.
477 : : * @inode_follow_link:
478 : : * Check permission to follow a symbolic link when looking up a pathname.
479 : : * @dentry contains the dentry structure for the link.
480 : : * @nd contains the nameidata structure for the parent directory.
481 : : * Return 0 if permission is granted.
482 : : * @inode_permission:
483 : : * Check permission before accessing an inode. This hook is called by the
484 : : * existing Linux permission function, so a security module can use it to
485 : : * provide additional checking for existing Linux permission checks.
486 : : * Notice that this hook is called when a file is opened (as well as many
487 : : * other operations), whereas the file_security_ops permission hook is
488 : : * called when the actual read/write operations are performed.
489 : : * @inode contains the inode structure to check.
490 : : * @mask contains the permission mask.
491 : : * Return 0 if permission is granted.
492 : : * @inode_setattr:
493 : : * Check permission before setting file attributes. Note that the kernel
494 : : * call to notify_change is performed from several locations, whenever
495 : : * file attributes change (such as when a file is truncated, chown/chmod
496 : : * operations, transferring disk quotas, etc).
497 : : * @dentry contains the dentry structure for the file.
498 : : * @attr is the iattr structure containing the new file attributes.
499 : : * Return 0 if permission is granted.
500 : : * @path_truncate:
501 : : * Check permission before truncating a file.
502 : : * @path contains the path structure for the file.
503 : : * Return 0 if permission is granted.
504 : : * @inode_getattr:
505 : : * Check permission before obtaining file attributes.
506 : : * @mnt is the vfsmount where the dentry was looked up
507 : : * @dentry contains the dentry structure for the file.
508 : : * Return 0 if permission is granted.
509 : : * @inode_setxattr:
510 : : * Check permission before setting the extended attributes
511 : : * @value identified by @name for @dentry.
512 : : * Return 0 if permission is granted.
513 : : * @inode_post_setxattr:
514 : : * Update inode security field after successful setxattr operation.
515 : : * @value identified by @name for @dentry.
516 : : * @inode_getxattr:
517 : : * Check permission before obtaining the extended attributes
518 : : * identified by @name for @dentry.
519 : : * Return 0 if permission is granted.
520 : : * @inode_listxattr:
521 : : * Check permission before obtaining the list of extended attribute
522 : : * names for @dentry.
523 : : * Return 0 if permission is granted.
524 : : * @inode_removexattr:
525 : : * Check permission before removing the extended attribute
526 : : * identified by @name for @dentry.
527 : : * Return 0 if permission is granted.
528 : : * @inode_getsecurity:
529 : : * Retrieve a copy of the extended attribute representation of the
530 : : * security label associated with @name for @inode via @buffer. Note that
531 : : * @name is the remainder of the attribute name after the security prefix
532 : : * has been removed. @alloc is used to specify of the call should return a
533 : : * value via the buffer or just the value length Return size of buffer on
534 : : * success.
535 : : * @inode_setsecurity:
536 : : * Set the security label associated with @name for @inode from the
537 : : * extended attribute value @value. @size indicates the size of the
538 : : * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
539 : : * Note that @name is the remainder of the attribute name after the
540 : : * security. prefix has been removed.
541 : : * Return 0 on success.
542 : : * @inode_listsecurity:
543 : : * Copy the extended attribute names for the security labels
544 : : * associated with @inode into @buffer. The maximum size of @buffer
545 : : * is specified by @buffer_size. @buffer may be NULL to request
546 : : * the size of the buffer required.
547 : : * Returns number of bytes used/required on success.
548 : : * @inode_need_killpriv:
549 : : * Called when an inode has been changed.
550 : : * @dentry is the dentry being changed.
551 : : * Return <0 on error to abort the inode change operation.
552 : : * Return 0 if inode_killpriv does not need to be called.
553 : : * Return >0 if inode_killpriv does need to be called.
554 : : * @inode_killpriv:
555 : : * The setuid bit is being removed. Remove similar security labels.
556 : : * Called with the dentry->d_inode->i_mutex held.
557 : : * @dentry is the dentry being changed.
558 : : * Return 0 on success. If error is returned, then the operation
559 : : * causing setuid bit removal is failed.
560 : : * @inode_getsecid:
561 : : * Get the secid associated with the node.
562 : : * @inode contains a pointer to the inode.
563 : : * @secid contains a pointer to the location where result will be saved.
564 : : * In case of failure, @secid will be set to zero.
565 : : *
566 : : * Security hooks for file operations
567 : : *
568 : : * @file_permission:
569 : : * Check file permissions before accessing an open file. This hook is
570 : : * called by various operations that read or write files. A security
571 : : * module can use this hook to perform additional checking on these
572 : : * operations, e.g. to revalidate permissions on use to support privilege
573 : : * bracketing or policy changes. Notice that this hook is used when the
574 : : * actual read/write operations are performed, whereas the
575 : : * inode_security_ops hook is called when a file is opened (as well as
576 : : * many other operations).
577 : : * Caveat: Although this hook can be used to revalidate permissions for
578 : : * various system call operations that read or write files, it does not
579 : : * address the revalidation of permissions for memory-mapped files.
580 : : * Security modules must handle this separately if they need such
581 : : * revalidation.
582 : : * @file contains the file structure being accessed.
583 : : * @mask contains the requested permissions.
584 : : * Return 0 if permission is granted.
585 : : * @file_alloc_security:
586 : : * Allocate and attach a security structure to the file->f_security field.
587 : : * The security field is initialized to NULL when the structure is first
588 : : * created.
589 : : * @file contains the file structure to secure.
590 : : * Return 0 if the hook is successful and permission is granted.
591 : : * @file_free_security:
592 : : * Deallocate and free any security structures stored in file->f_security.
593 : : * @file contains the file structure being modified.
594 : : * @file_ioctl:
595 : : * @file contains the file structure.
596 : : * @cmd contains the operation to perform.
597 : : * @arg contains the operational arguments.
598 : : * Check permission for an ioctl operation on @file. Note that @arg
599 : : * sometimes represents a user space pointer; in other cases, it may be a
600 : : * simple integer value. When @arg represents a user space pointer, it
601 : : * should never be used by the security module.
602 : : * Return 0 if permission is granted.
603 : : * @mmap_addr :
604 : : * Check permissions for a mmap operation at @addr.
605 : : * @addr contains virtual address that will be used for the operation.
606 : : * Return 0 if permission is granted.
607 : : * @mmap_file :
608 : : * Check permissions for a mmap operation. The @file may be NULL, e.g.
609 : : * if mapping anonymous memory.
610 : : * @file contains the file structure for file to map (may be NULL).
611 : : * @reqprot contains the protection requested by the application.
612 : : * @prot contains the protection that will be applied by the kernel.
613 : : * @flags contains the operational flags.
614 : : * Return 0 if permission is granted.
615 : : * @file_mprotect:
616 : : * Check permissions before changing memory access permissions.
617 : : * @vma contains the memory region to modify.
618 : : * @reqprot contains the protection requested by the application.
619 : : * @prot contains the protection that will be applied by the kernel.
620 : : * Return 0 if permission is granted.
621 : : * @file_lock:
622 : : * Check permission before performing file locking operations.
623 : : * Note: this hook mediates both flock and fcntl style locks.
624 : : * @file contains the file structure.
625 : : * @cmd contains the posix-translated lock operation to perform
626 : : * (e.g. F_RDLCK, F_WRLCK).
627 : : * Return 0 if permission is granted.
628 : : * @file_fcntl:
629 : : * Check permission before allowing the file operation specified by @cmd
630 : : * from being performed on the file @file. Note that @arg sometimes
631 : : * represents a user space pointer; in other cases, it may be a simple
632 : : * integer value. When @arg represents a user space pointer, it should
633 : : * never be used by the security module.
634 : : * @file contains the file structure.
635 : : * @cmd contains the operation to be performed.
636 : : * @arg contains the operational arguments.
637 : : * Return 0 if permission is granted.
638 : : * @file_set_fowner:
639 : : * Save owner security information (typically from current->security) in
640 : : * file->f_security for later use by the send_sigiotask hook.
641 : : * @file contains the file structure to update.
642 : : * Return 0 on success.
643 : : * @file_send_sigiotask:
644 : : * Check permission for the file owner @fown to send SIGIO or SIGURG to the
645 : : * process @tsk. Note that this hook is sometimes called from interrupt.
646 : : * Note that the fown_struct, @fown, is never outside the context of a
647 : : * struct file, so the file structure (and associated security information)
648 : : * can always be obtained:
649 : : * container_of(fown, struct file, f_owner)
650 : : * @tsk contains the structure of task receiving signal.
651 : : * @fown contains the file owner information.
652 : : * @sig is the signal that will be sent. When 0, kernel sends SIGIO.
653 : : * Return 0 if permission is granted.
654 : : * @file_receive:
655 : : * This hook allows security modules to control the ability of a process
656 : : * to receive an open file descriptor via socket IPC.
657 : : * @file contains the file structure being received.
658 : : * Return 0 if permission is granted.
659 : : * @file_open
660 : : * Save open-time permission checking state for later use upon
661 : : * file_permission, and recheck access if anything has changed
662 : : * since inode_permission.
663 : : *
664 : : * Security hooks for task operations.
665 : : *
666 : : * @task_create:
667 : : * Check permission before creating a child process. See the clone(2)
668 : : * manual page for definitions of the @clone_flags.
669 : : * @clone_flags contains the flags indicating what should be shared.
670 : : * Return 0 if permission is granted.
671 : : * @task_free:
672 : : * @task task being freed
673 : : * Handle release of task-related resources. (Note that this can be called
674 : : * from interrupt context.)
675 : : * @cred_alloc_blank:
676 : : * @cred points to the credentials.
677 : : * @gfp indicates the atomicity of any memory allocations.
678 : : * Only allocate sufficient memory and attach to @cred such that
679 : : * cred_transfer() will not get ENOMEM.
680 : : * @cred_free:
681 : : * @cred points to the credentials.
682 : : * Deallocate and clear the cred->security field in a set of credentials.
683 : : * @cred_prepare:
684 : : * @new points to the new credentials.
685 : : * @old points to the original credentials.
686 : : * @gfp indicates the atomicity of any memory allocations.
687 : : * Prepare a new set of credentials by copying the data from the old set.
688 : : * @cred_transfer:
689 : : * @new points to the new credentials.
690 : : * @old points to the original credentials.
691 : : * Transfer data from original creds to new creds
692 : : * @kernel_act_as:
693 : : * Set the credentials for a kernel service to act as (subjective context).
694 : : * @new points to the credentials to be modified.
695 : : * @secid specifies the security ID to be set
696 : : * The current task must be the one that nominated @secid.
697 : : * Return 0 if successful.
698 : : * @kernel_create_files_as:
699 : : * Set the file creation context in a set of credentials to be the same as
700 : : * the objective context of the specified inode.
701 : : * @new points to the credentials to be modified.
702 : : * @inode points to the inode to use as a reference.
703 : : * The current task must be the one that nominated @inode.
704 : : * Return 0 if successful.
705 : : * @kernel_module_request:
706 : : * Ability to trigger the kernel to automatically upcall to userspace for
707 : : * userspace to load a kernel module with the given name.
708 : : * @kmod_name name of the module requested by the kernel
709 : : * Return 0 if successful.
710 : : * @kernel_module_from_file:
711 : : * Load a kernel module from userspace.
712 : : * @file contains the file structure pointing to the file containing
713 : : * the kernel module to load. If the module is being loaded from a blob,
714 : : * this argument will be NULL.
715 : : * Return 0 if permission is granted.
716 : : * @task_fix_setuid:
717 : : * Update the module's state after setting one or more of the user
718 : : * identity attributes of the current process. The @flags parameter
719 : : * indicates which of the set*uid system calls invoked this hook. If
720 : : * @new is the set of credentials that will be installed. Modifications
721 : : * should be made to this rather than to @current->cred.
722 : : * @old is the set of credentials that are being replaces
723 : : * @flags contains one of the LSM_SETID_* values.
724 : : * Return 0 on success.
725 : : * @task_setpgid:
726 : : * Check permission before setting the process group identifier of the
727 : : * process @p to @pgid.
728 : : * @p contains the task_struct for process being modified.
729 : : * @pgid contains the new pgid.
730 : : * Return 0 if permission is granted.
731 : : * @task_getpgid:
732 : : * Check permission before getting the process group identifier of the
733 : : * process @p.
734 : : * @p contains the task_struct for the process.
735 : : * Return 0 if permission is granted.
736 : : * @task_getsid:
737 : : * Check permission before getting the session identifier of the process
738 : : * @p.
739 : : * @p contains the task_struct for the process.
740 : : * Return 0 if permission is granted.
741 : : * @task_getsecid:
742 : : * Retrieve the security identifier of the process @p.
743 : : * @p contains the task_struct for the process and place is into @secid.
744 : : * In case of failure, @secid will be set to zero.
745 : : *
746 : : * @task_setnice:
747 : : * Check permission before setting the nice value of @p to @nice.
748 : : * @p contains the task_struct of process.
749 : : * @nice contains the new nice value.
750 : : * Return 0 if permission is granted.
751 : : * @task_setioprio
752 : : * Check permission before setting the ioprio value of @p to @ioprio.
753 : : * @p contains the task_struct of process.
754 : : * @ioprio contains the new ioprio value
755 : : * Return 0 if permission is granted.
756 : : * @task_getioprio
757 : : * Check permission before getting the ioprio value of @p.
758 : : * @p contains the task_struct of process.
759 : : * Return 0 if permission is granted.
760 : : * @task_setrlimit:
761 : : * Check permission before setting the resource limits of the current
762 : : * process for @resource to @new_rlim. The old resource limit values can
763 : : * be examined by dereferencing (current->signal->rlim + resource).
764 : : * @resource contains the resource whose limit is being set.
765 : : * @new_rlim contains the new limits for @resource.
766 : : * Return 0 if permission is granted.
767 : : * @task_setscheduler:
768 : : * Check permission before setting scheduling policy and/or parameters of
769 : : * process @p based on @policy and @lp.
770 : : * @p contains the task_struct for process.
771 : : * @policy contains the scheduling policy.
772 : : * @lp contains the scheduling parameters.
773 : : * Return 0 if permission is granted.
774 : : * @task_getscheduler:
775 : : * Check permission before obtaining scheduling information for process
776 : : * @p.
777 : : * @p contains the task_struct for process.
778 : : * Return 0 if permission is granted.
779 : : * @task_movememory
780 : : * Check permission before moving memory owned by process @p.
781 : : * @p contains the task_struct for process.
782 : : * Return 0 if permission is granted.
783 : : * @task_kill:
784 : : * Check permission before sending signal @sig to @p. @info can be NULL,
785 : : * the constant 1, or a pointer to a siginfo structure. If @info is 1 or
786 : : * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
787 : : * from the kernel and should typically be permitted.
788 : : * SIGIO signals are handled separately by the send_sigiotask hook in
789 : : * file_security_ops.
790 : : * @p contains the task_struct for process.
791 : : * @info contains the signal information.
792 : : * @sig contains the signal value.
793 : : * @secid contains the sid of the process where the signal originated
794 : : * Return 0 if permission is granted.
795 : : * @task_wait:
796 : : * Check permission before allowing a process to reap a child process @p
797 : : * and collect its status information.
798 : : * @p contains the task_struct for process.
799 : : * Return 0 if permission is granted.
800 : : * @task_prctl:
801 : : * Check permission before performing a process control operation on the
802 : : * current process.
803 : : * @option contains the operation.
804 : : * @arg2 contains a argument.
805 : : * @arg3 contains a argument.
806 : : * @arg4 contains a argument.
807 : : * @arg5 contains a argument.
808 : : * Return -ENOSYS if no-one wanted to handle this op, any other value to
809 : : * cause prctl() to return immediately with that value.
810 : : * @task_to_inode:
811 : : * Set the security attributes for an inode based on an associated task's
812 : : * security attributes, e.g. for /proc/pid inodes.
813 : : * @p contains the task_struct for the task.
814 : : * @inode contains the inode structure for the inode.
815 : : *
816 : : * Security hooks for Netlink messaging.
817 : : *
818 : : * @netlink_send:
819 : : * Save security information for a netlink message so that permission
820 : : * checking can be performed when the message is processed. The security
821 : : * information can be saved using the eff_cap field of the
822 : : * netlink_skb_parms structure. Also may be used to provide fine
823 : : * grained control over message transmission.
824 : : * @sk associated sock of task sending the message.
825 : : * @skb contains the sk_buff structure for the netlink message.
826 : : * Return 0 if the information was successfully saved and message
827 : : * is allowed to be transmitted.
828 : : *
829 : : * Security hooks for Unix domain networking.
830 : : *
831 : : * @unix_stream_connect:
832 : : * Check permissions before establishing a Unix domain stream connection
833 : : * between @sock and @other.
834 : : * @sock contains the sock structure.
835 : : * @other contains the peer sock structure.
836 : : * @newsk contains the new sock structure.
837 : : * Return 0 if permission is granted.
838 : : * @unix_may_send:
839 : : * Check permissions before connecting or sending datagrams from @sock to
840 : : * @other.
841 : : * @sock contains the socket structure.
842 : : * @other contains the peer socket structure.
843 : : * Return 0 if permission is granted.
844 : : *
845 : : * The @unix_stream_connect and @unix_may_send hooks were necessary because
846 : : * Linux provides an alternative to the conventional file name space for Unix
847 : : * domain sockets. Whereas binding and connecting to sockets in the file name
848 : : * space is mediated by the typical file permissions (and caught by the mknod
849 : : * and permission hooks in inode_security_ops), binding and connecting to
850 : : * sockets in the abstract name space is completely unmediated. Sufficient
851 : : * control of Unix domain sockets in the abstract name space isn't possible
852 : : * using only the socket layer hooks, since we need to know the actual target
853 : : * socket, which is not looked up until we are inside the af_unix code.
854 : : *
855 : : * Security hooks for socket operations.
856 : : *
857 : : * @socket_create:
858 : : * Check permissions prior to creating a new socket.
859 : : * @family contains the requested protocol family.
860 : : * @type contains the requested communications type.
861 : : * @protocol contains the requested protocol.
862 : : * @kern set to 1 if a kernel socket.
863 : : * Return 0 if permission is granted.
864 : : * @socket_post_create:
865 : : * This hook allows a module to update or allocate a per-socket security
866 : : * structure. Note that the security field was not added directly to the
867 : : * socket structure, but rather, the socket security information is stored
868 : : * in the associated inode. Typically, the inode alloc_security hook will
869 : : * allocate and and attach security information to
870 : : * sock->inode->i_security. This hook may be used to update the
871 : : * sock->inode->i_security field with additional information that wasn't
872 : : * available when the inode was allocated.
873 : : * @sock contains the newly created socket structure.
874 : : * @family contains the requested protocol family.
875 : : * @type contains the requested communications type.
876 : : * @protocol contains the requested protocol.
877 : : * @kern set to 1 if a kernel socket.
878 : : * @socket_bind:
879 : : * Check permission before socket protocol layer bind operation is
880 : : * performed and the socket @sock is bound to the address specified in the
881 : : * @address parameter.
882 : : * @sock contains the socket structure.
883 : : * @address contains the address to bind to.
884 : : * @addrlen contains the length of address.
885 : : * Return 0 if permission is granted.
886 : : * @socket_connect:
887 : : * Check permission before socket protocol layer connect operation
888 : : * attempts to connect socket @sock to a remote address, @address.
889 : : * @sock contains the socket structure.
890 : : * @address contains the address of remote endpoint.
891 : : * @addrlen contains the length of address.
892 : : * Return 0 if permission is granted.
893 : : * @socket_listen:
894 : : * Check permission before socket protocol layer listen operation.
895 : : * @sock contains the socket structure.
896 : : * @backlog contains the maximum length for the pending connection queue.
897 : : * Return 0 if permission is granted.
898 : : * @socket_accept:
899 : : * Check permission before accepting a new connection. Note that the new
900 : : * socket, @newsock, has been created and some information copied to it,
901 : : * but the accept operation has not actually been performed.
902 : : * @sock contains the listening socket structure.
903 : : * @newsock contains the newly created server socket for connection.
904 : : * Return 0 if permission is granted.
905 : : * @socket_sendmsg:
906 : : * Check permission before transmitting a message to another socket.
907 : : * @sock contains the socket structure.
908 : : * @msg contains the message to be transmitted.
909 : : * @size contains the size of message.
910 : : * Return 0 if permission is granted.
911 : : * @socket_recvmsg:
912 : : * Check permission before receiving a message from a socket.
913 : : * @sock contains the socket structure.
914 : : * @msg contains the message structure.
915 : : * @size contains the size of message structure.
916 : : * @flags contains the operational flags.
917 : : * Return 0 if permission is granted.
918 : : * @socket_getsockname:
919 : : * Check permission before the local address (name) of the socket object
920 : : * @sock is retrieved.
921 : : * @sock contains the socket structure.
922 : : * Return 0 if permission is granted.
923 : : * @socket_getpeername:
924 : : * Check permission before the remote address (name) of a socket object
925 : : * @sock is retrieved.
926 : : * @sock contains the socket structure.
927 : : * Return 0 if permission is granted.
928 : : * @socket_getsockopt:
929 : : * Check permissions before retrieving the options associated with socket
930 : : * @sock.
931 : : * @sock contains the socket structure.
932 : : * @level contains the protocol level to retrieve option from.
933 : : * @optname contains the name of option to retrieve.
934 : : * Return 0 if permission is granted.
935 : : * @socket_setsockopt:
936 : : * Check permissions before setting the options associated with socket
937 : : * @sock.
938 : : * @sock contains the socket structure.
939 : : * @level contains the protocol level to set options for.
940 : : * @optname contains the name of the option to set.
941 : : * Return 0 if permission is granted.
942 : : * @socket_shutdown:
943 : : * Checks permission before all or part of a connection on the socket
944 : : * @sock is shut down.
945 : : * @sock contains the socket structure.
946 : : * @how contains the flag indicating how future sends and receives are handled.
947 : : * Return 0 if permission is granted.
948 : : * @socket_sock_rcv_skb:
949 : : * Check permissions on incoming network packets. This hook is distinct
950 : : * from Netfilter's IP input hooks since it is the first time that the
951 : : * incoming sk_buff @skb has been associated with a particular socket, @sk.
952 : : * Must not sleep inside this hook because some callers hold spinlocks.
953 : : * @sk contains the sock (not socket) associated with the incoming sk_buff.
954 : : * @skb contains the incoming network data.
955 : : * @socket_getpeersec_stream:
956 : : * This hook allows the security module to provide peer socket security
957 : : * state for unix or connected tcp sockets to userspace via getsockopt
958 : : * SO_GETPEERSEC. For tcp sockets this can be meaningful if the
959 : : * socket is associated with an ipsec SA.
960 : : * @sock is the local socket.
961 : : * @optval userspace memory where the security state is to be copied.
962 : : * @optlen userspace int where the module should copy the actual length
963 : : * of the security state.
964 : : * @len as input is the maximum length to copy to userspace provided
965 : : * by the caller.
966 : : * Return 0 if all is well, otherwise, typical getsockopt return
967 : : * values.
968 : : * @socket_getpeersec_dgram:
969 : : * This hook allows the security module to provide peer socket security
970 : : * state for udp sockets on a per-packet basis to userspace via
971 : : * getsockopt SO_GETPEERSEC. The application must first have indicated
972 : : * the IP_PASSSEC option via getsockopt. It can then retrieve the
973 : : * security state returned by this hook for a packet via the SCM_SECURITY
974 : : * ancillary message type.
975 : : * @skb is the skbuff for the packet being queried
976 : : * @secdata is a pointer to a buffer in which to copy the security data
977 : : * @seclen is the maximum length for @secdata
978 : : * Return 0 on success, error on failure.
979 : : * @sk_alloc_security:
980 : : * Allocate and attach a security structure to the sk->sk_security field,
981 : : * which is used to copy security attributes between local stream sockets.
982 : : * @sk_free_security:
983 : : * Deallocate security structure.
984 : : * @sk_clone_security:
985 : : * Clone/copy security structure.
986 : : * @sk_getsecid:
987 : : * Retrieve the LSM-specific secid for the sock to enable caching of network
988 : : * authorizations.
989 : : * @sock_graft:
990 : : * Sets the socket's isec sid to the sock's sid.
991 : : * @inet_conn_request:
992 : : * Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
993 : : * @inet_csk_clone:
994 : : * Sets the new child socket's sid to the openreq sid.
995 : : * @inet_conn_established:
996 : : * Sets the connection's peersid to the secmark on skb.
997 : : * @secmark_relabel_packet:
998 : : * check if the process should be allowed to relabel packets to the given secid
999 : : * @security_secmark_refcount_inc
1000 : : * tells the LSM to increment the number of secmark labeling rules loaded
1001 : : * @security_secmark_refcount_dec
1002 : : * tells the LSM to decrement the number of secmark labeling rules loaded
1003 : : * @req_classify_flow:
1004 : : * Sets the flow's sid to the openreq sid.
1005 : : * @tun_dev_alloc_security:
1006 : : * This hook allows a module to allocate a security structure for a TUN
1007 : : * device.
1008 : : * @security pointer to a security structure pointer.
1009 : : * Returns a zero on success, negative values on failure.
1010 : : * @tun_dev_free_security:
1011 : : * This hook allows a module to free the security structure for a TUN
1012 : : * device.
1013 : : * @security pointer to the TUN device's security structure
1014 : : * @tun_dev_create:
1015 : : * Check permissions prior to creating a new TUN device.
1016 : : * @tun_dev_attach_queue:
1017 : : * Check permissions prior to attaching to a TUN device queue.
1018 : : * @security pointer to the TUN device's security structure.
1019 : : * @tun_dev_attach:
1020 : : * This hook can be used by the module to update any security state
1021 : : * associated with the TUN device's sock structure.
1022 : : * @sk contains the existing sock structure.
1023 : : * @security pointer to the TUN device's security structure.
1024 : : * @tun_dev_open:
1025 : : * This hook can be used by the module to update any security state
1026 : : * associated with the TUN device's security structure.
1027 : : * @security pointer to the TUN devices's security structure.
1028 : : * @skb_owned_by:
1029 : : * This hook sets the packet's owning sock.
1030 : : * @skb is the packet.
1031 : : * @sk the sock which owns the packet.
1032 : : *
1033 : : * Security hooks for XFRM operations.
1034 : : *
1035 : : * @xfrm_policy_alloc_security:
1036 : : * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
1037 : : * Database used by the XFRM system.
1038 : : * @sec_ctx contains the security context information being provided by
1039 : : * the user-level policy update program (e.g., setkey).
1040 : : * Allocate a security structure to the xp->security field; the security
1041 : : * field is initialized to NULL when the xfrm_policy is allocated.
1042 : : * Return 0 if operation was successful (memory to allocate, legal context)
1043 : : * @gfp is to specify the context for the allocation
1044 : : * @xfrm_policy_clone_security:
1045 : : * @old_ctx contains an existing xfrm_sec_ctx.
1046 : : * @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
1047 : : * Allocate a security structure in new_ctxp that contains the
1048 : : * information from the old_ctx structure.
1049 : : * Return 0 if operation was successful (memory to allocate).
1050 : : * @xfrm_policy_free_security:
1051 : : * @ctx contains the xfrm_sec_ctx
1052 : : * Deallocate xp->security.
1053 : : * @xfrm_policy_delete_security:
1054 : : * @ctx contains the xfrm_sec_ctx.
1055 : : * Authorize deletion of xp->security.
1056 : : * @xfrm_state_alloc:
1057 : : * @x contains the xfrm_state being added to the Security Association
1058 : : * Database by the XFRM system.
1059 : : * @sec_ctx contains the security context information being provided by
1060 : : * the user-level SA generation program (e.g., setkey or racoon).
1061 : : * Allocate a security structure to the x->security field; the security
1062 : : * field is initialized to NULL when the xfrm_state is allocated. Set the
1063 : : * context to correspond to sec_ctx. Return 0 if operation was successful
1064 : : * (memory to allocate, legal context).
1065 : : * @xfrm_state_alloc_acquire:
1066 : : * @x contains the xfrm_state being added to the Security Association
1067 : : * Database by the XFRM system.
1068 : : * @polsec contains the policy's security context.
1069 : : * @secid contains the secid from which to take the mls portion of the
1070 : : * context.
1071 : : * Allocate a security structure to the x->security field; the security
1072 : : * field is initialized to NULL when the xfrm_state is allocated. Set the
1073 : : * context to correspond to secid. Return 0 if operation was successful
1074 : : * (memory to allocate, legal context).
1075 : : * @xfrm_state_free_security:
1076 : : * @x contains the xfrm_state.
1077 : : * Deallocate x->security.
1078 : : * @xfrm_state_delete_security:
1079 : : * @x contains the xfrm_state.
1080 : : * Authorize deletion of x->security.
1081 : : * @xfrm_policy_lookup:
1082 : : * @ctx contains the xfrm_sec_ctx for which the access control is being
1083 : : * checked.
1084 : : * @fl_secid contains the flow security label that is used to authorize
1085 : : * access to the policy xp.
1086 : : * @dir contains the direction of the flow (input or output).
1087 : : * Check permission when a flow selects a xfrm_policy for processing
1088 : : * XFRMs on a packet. The hook is called when selecting either a
1089 : : * per-socket policy or a generic xfrm policy.
1090 : : * Return 0 if permission is granted, -ESRCH otherwise, or -errno
1091 : : * on other errors.
1092 : : * @xfrm_state_pol_flow_match:
1093 : : * @x contains the state to match.
1094 : : * @xp contains the policy to check for a match.
1095 : : * @fl contains the flow to check for a match.
1096 : : * Return 1 if there is a match.
1097 : : * @xfrm_decode_session:
1098 : : * @skb points to skb to decode.
1099 : : * @secid points to the flow key secid to set.
1100 : : * @ckall says if all xfrms used should be checked for same secid.
1101 : : * Return 0 if ckall is zero or all xfrms used have the same secid.
1102 : : *
1103 : : * Security hooks affecting all Key Management operations
1104 : : *
1105 : : * @key_alloc:
1106 : : * Permit allocation of a key and assign security data. Note that key does
1107 : : * not have a serial number assigned at this point.
1108 : : * @key points to the key.
1109 : : * @flags is the allocation flags
1110 : : * Return 0 if permission is granted, -ve error otherwise.
1111 : : * @key_free:
1112 : : * Notification of destruction; free security data.
1113 : : * @key points to the key.
1114 : : * No return value.
1115 : : * @key_permission:
1116 : : * See whether a specific operational right is granted to a process on a
1117 : : * key.
1118 : : * @key_ref refers to the key (key pointer + possession attribute bit).
1119 : : * @cred points to the credentials to provide the context against which to
1120 : : * evaluate the security data on the key.
1121 : : * @perm describes the combination of permissions required of this key.
1122 : : * Return 0 if permission is granted, -ve error otherwise.
1123 : : * @key_getsecurity:
1124 : : * Get a textual representation of the security context attached to a key
1125 : : * for the purposes of honouring KEYCTL_GETSECURITY. This function
1126 : : * allocates the storage for the NUL-terminated string and the caller
1127 : : * should free it.
1128 : : * @key points to the key to be queried.
1129 : : * @_buffer points to a pointer that should be set to point to the
1130 : : * resulting string (if no label or an error occurs).
1131 : : * Return the length of the string (including terminating NUL) or -ve if
1132 : : * an error.
1133 : : * May also return 0 (and a NULL buffer pointer) if there is no label.
1134 : : *
1135 : : * Security hooks affecting all System V IPC operations.
1136 : : *
1137 : : * @ipc_permission:
1138 : : * Check permissions for access to IPC
1139 : : * @ipcp contains the kernel IPC permission structure
1140 : : * @flag contains the desired (requested) permission set
1141 : : * Return 0 if permission is granted.
1142 : : * @ipc_getsecid:
1143 : : * Get the secid associated with the ipc object.
1144 : : * @ipcp contains the kernel IPC permission structure.
1145 : : * @secid contains a pointer to the location where result will be saved.
1146 : : * In case of failure, @secid will be set to zero.
1147 : : *
1148 : : * Security hooks for individual messages held in System V IPC message queues
1149 : : * @msg_msg_alloc_security:
1150 : : * Allocate and attach a security structure to the msg->security field.
1151 : : * The security field is initialized to NULL when the structure is first
1152 : : * created.
1153 : : * @msg contains the message structure to be modified.
1154 : : * Return 0 if operation was successful and permission is granted.
1155 : : * @msg_msg_free_security:
1156 : : * Deallocate the security structure for this message.
1157 : : * @msg contains the message structure to be modified.
1158 : : *
1159 : : * Security hooks for System V IPC Message Queues
1160 : : *
1161 : : * @msg_queue_alloc_security:
1162 : : * Allocate and attach a security structure to the
1163 : : * msq->q_perm.security field. The security field is initialized to
1164 : : * NULL when the structure is first created.
1165 : : * @msq contains the message queue structure to be modified.
1166 : : * Return 0 if operation was successful and permission is granted.
1167 : : * @msg_queue_free_security:
1168 : : * Deallocate security structure for this message queue.
1169 : : * @msq contains the message queue structure to be modified.
1170 : : * @msg_queue_associate:
1171 : : * Check permission when a message queue is requested through the
1172 : : * msgget system call. This hook is only called when returning the
1173 : : * message queue identifier for an existing message queue, not when a
1174 : : * new message queue is created.
1175 : : * @msq contains the message queue to act upon.
1176 : : * @msqflg contains the operation control flags.
1177 : : * Return 0 if permission is granted.
1178 : : * @msg_queue_msgctl:
1179 : : * Check permission when a message control operation specified by @cmd
1180 : : * is to be performed on the message queue @msq.
1181 : : * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
1182 : : * @msq contains the message queue to act upon. May be NULL.
1183 : : * @cmd contains the operation to be performed.
1184 : : * Return 0 if permission is granted.
1185 : : * @msg_queue_msgsnd:
1186 : : * Check permission before a message, @msg, is enqueued on the message
1187 : : * queue, @msq.
1188 : : * @msq contains the message queue to send message to.
1189 : : * @msg contains the message to be enqueued.
1190 : : * @msqflg contains operational flags.
1191 : : * Return 0 if permission is granted.
1192 : : * @msg_queue_msgrcv:
1193 : : * Check permission before a message, @msg, is removed from the message
1194 : : * queue, @msq. The @target task structure contains a pointer to the
1195 : : * process that will be receiving the message (not equal to the current
1196 : : * process when inline receives are being performed).
1197 : : * @msq contains the message queue to retrieve message from.
1198 : : * @msg contains the message destination.
1199 : : * @target contains the task structure for recipient process.
1200 : : * @type contains the type of message requested.
1201 : : * @mode contains the operational flags.
1202 : : * Return 0 if permission is granted.
1203 : : *
1204 : : * Security hooks for System V Shared Memory Segments
1205 : : *
1206 : : * @shm_alloc_security:
1207 : : * Allocate and attach a security structure to the shp->shm_perm.security
1208 : : * field. The security field is initialized to NULL when the structure is
1209 : : * first created.
1210 : : * @shp contains the shared memory structure to be modified.
1211 : : * Return 0 if operation was successful and permission is granted.
1212 : : * @shm_free_security:
1213 : : * Deallocate the security struct for this memory segment.
1214 : : * @shp contains the shared memory structure to be modified.
1215 : : * @shm_associate:
1216 : : * Check permission when a shared memory region is requested through the
1217 : : * shmget system call. This hook is only called when returning the shared
1218 : : * memory region identifier for an existing region, not when a new shared
1219 : : * memory region is created.
1220 : : * @shp contains the shared memory structure to be modified.
1221 : : * @shmflg contains the operation control flags.
1222 : : * Return 0 if permission is granted.
1223 : : * @shm_shmctl:
1224 : : * Check permission when a shared memory control operation specified by
1225 : : * @cmd is to be performed on the shared memory region @shp.
1226 : : * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
1227 : : * @shp contains shared memory structure to be modified.
1228 : : * @cmd contains the operation to be performed.
1229 : : * Return 0 if permission is granted.
1230 : : * @shm_shmat:
1231 : : * Check permissions prior to allowing the shmat system call to attach the
1232 : : * shared memory segment @shp to the data segment of the calling process.
1233 : : * The attaching address is specified by @shmaddr.
1234 : : * @shp contains the shared memory structure to be modified.
1235 : : * @shmaddr contains the address to attach memory region to.
1236 : : * @shmflg contains the operational flags.
1237 : : * Return 0 if permission is granted.
1238 : : *
1239 : : * Security hooks for System V Semaphores
1240 : : *
1241 : : * @sem_alloc_security:
1242 : : * Allocate and attach a security structure to the sma->sem_perm.security
1243 : : * field. The security field is initialized to NULL when the structure is
1244 : : * first created.
1245 : : * @sma contains the semaphore structure
1246 : : * Return 0 if operation was successful and permission is granted.
1247 : : * @sem_free_security:
1248 : : * deallocate security struct for this semaphore
1249 : : * @sma contains the semaphore structure.
1250 : : * @sem_associate:
1251 : : * Check permission when a semaphore is requested through the semget
1252 : : * system call. This hook is only called when returning the semaphore
1253 : : * identifier for an existing semaphore, not when a new one must be
1254 : : * created.
1255 : : * @sma contains the semaphore structure.
1256 : : * @semflg contains the operation control flags.
1257 : : * Return 0 if permission is granted.
1258 : : * @sem_semctl:
1259 : : * Check permission when a semaphore operation specified by @cmd is to be
1260 : : * performed on the semaphore @sma. The @sma may be NULL, e.g. for
1261 : : * IPC_INFO or SEM_INFO.
1262 : : * @sma contains the semaphore structure. May be NULL.
1263 : : * @cmd contains the operation to be performed.
1264 : : * Return 0 if permission is granted.
1265 : : * @sem_semop
1266 : : * Check permissions before performing operations on members of the
1267 : : * semaphore set @sma. If the @alter flag is nonzero, the semaphore set
1268 : : * may be modified.
1269 : : * @sma contains the semaphore structure.
1270 : : * @sops contains the operations to perform.
1271 : : * @nsops contains the number of operations to perform.
1272 : : * @alter contains the flag indicating whether changes are to be made.
1273 : : * Return 0 if permission is granted.
1274 : : *
1275 : : * @ptrace_access_check:
1276 : : * Check permission before allowing the current process to trace the
1277 : : * @child process.
1278 : : * Security modules may also want to perform a process tracing check
1279 : : * during an execve in the set_security or apply_creds hooks of
1280 : : * tracing check during an execve in the bprm_set_creds hook of
1281 : : * binprm_security_ops if the process is being traced and its security
1282 : : * attributes would be changed by the execve.
1283 : : * @child contains the task_struct structure for the target process.
1284 : : * @mode contains the PTRACE_MODE flags indicating the form of access.
1285 : : * Return 0 if permission is granted.
1286 : : * @ptrace_traceme:
1287 : : * Check that the @parent process has sufficient permission to trace the
1288 : : * current process before allowing the current process to present itself
1289 : : * to the @parent process for tracing.
1290 : : * @parent contains the task_struct structure for debugger process.
1291 : : * Return 0 if permission is granted.
1292 : : * @capget:
1293 : : * Get the @effective, @inheritable, and @permitted capability sets for
1294 : : * the @target process. The hook may also perform permission checking to
1295 : : * determine if the current process is allowed to see the capability sets
1296 : : * of the @target process.
1297 : : * @target contains the task_struct structure for target process.
1298 : : * @effective contains the effective capability set.
1299 : : * @inheritable contains the inheritable capability set.
1300 : : * @permitted contains the permitted capability set.
1301 : : * Return 0 if the capability sets were successfully obtained.
1302 : : * @capset:
1303 : : * Set the @effective, @inheritable, and @permitted capability sets for
1304 : : * the current process.
1305 : : * @new contains the new credentials structure for target process.
1306 : : * @old contains the current credentials structure for target process.
1307 : : * @effective contains the effective capability set.
1308 : : * @inheritable contains the inheritable capability set.
1309 : : * @permitted contains the permitted capability set.
1310 : : * Return 0 and update @new if permission is granted.
1311 : : * @capable:
1312 : : * Check whether the @tsk process has the @cap capability in the indicated
1313 : : * credentials.
1314 : : * @cred contains the credentials to use.
1315 : : * @ns contains the user namespace we want the capability in
1316 : : * @cap contains the capability <include/linux/capability.h>.
1317 : : * @audit: Whether to write an audit message or not
1318 : : * Return 0 if the capability is granted for @tsk.
1319 : : * @syslog:
1320 : : * Check permission before accessing the kernel message ring or changing
1321 : : * logging to the console.
1322 : : * See the syslog(2) manual page for an explanation of the @type values.
1323 : : * @type contains the type of action.
1324 : : * @from_file indicates the context of action (if it came from /proc).
1325 : : * Return 0 if permission is granted.
1326 : : * @settime:
1327 : : * Check permission to change the system time.
1328 : : * struct timespec and timezone are defined in include/linux/time.h
1329 : : * @ts contains new time
1330 : : * @tz contains new timezone
1331 : : * Return 0 if permission is granted.
1332 : : * @vm_enough_memory:
1333 : : * Check permissions for allocating a new virtual mapping.
1334 : : * @mm contains the mm struct it is being added to.
1335 : : * @pages contains the number of pages.
1336 : : * Return 0 if permission is granted.
1337 : : *
1338 : : * @ismaclabel:
1339 : : * Check if the extended attribute specified by @name
1340 : : * represents a MAC label. Returns 1 if name is a MAC
1341 : : * attribute otherwise returns 0.
1342 : : * @name full extended attribute name to check against
1343 : : * LSM as a MAC label.
1344 : : *
1345 : : * @secid_to_secctx:
1346 : : * Convert secid to security context. If secdata is NULL the length of
1347 : : * the result will be returned in seclen, but no secdata will be returned.
1348 : : * This does mean that the length could change between calls to check the
1349 : : * length and the next call which actually allocates and returns the secdata.
1350 : : * @secid contains the security ID.
1351 : : * @secdata contains the pointer that stores the converted security context.
1352 : : * @seclen pointer which contains the length of the data
1353 : : * @secctx_to_secid:
1354 : : * Convert security context to secid.
1355 : : * @secid contains the pointer to the generated security ID.
1356 : : * @secdata contains the security context.
1357 : : *
1358 : : * @release_secctx:
1359 : : * Release the security context.
1360 : : * @secdata contains the security context.
1361 : : * @seclen contains the length of the security context.
1362 : : *
1363 : : * Security hooks for Audit
1364 : : *
1365 : : * @audit_rule_init:
1366 : : * Allocate and initialize an LSM audit rule structure.
1367 : : * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
1368 : : * @op contains the operator the rule uses.
1369 : : * @rulestr contains the context where the rule will be applied to.
1370 : : * @lsmrule contains a pointer to receive the result.
1371 : : * Return 0 if @lsmrule has been successfully set,
1372 : : * -EINVAL in case of an invalid rule.
1373 : : *
1374 : : * @audit_rule_known:
1375 : : * Specifies whether given @rule contains any fields related to current LSM.
1376 : : * @rule contains the audit rule of interest.
1377 : : * Return 1 in case of relation found, 0 otherwise.
1378 : : *
1379 : : * @audit_rule_match:
1380 : : * Determine if given @secid matches a rule previously approved
1381 : : * by @audit_rule_known.
1382 : : * @secid contains the security id in question.
1383 : : * @field contains the field which relates to current LSM.
1384 : : * @op contains the operator that will be used for matching.
1385 : : * @rule points to the audit rule that will be checked against.
1386 : : * @actx points to the audit context associated with the check.
1387 : : * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
1388 : : *
1389 : : * @audit_rule_free:
1390 : : * Deallocate the LSM audit rule structure previously allocated by
1391 : : * audit_rule_init.
1392 : : * @rule contains the allocated rule
1393 : : *
1394 : : * @inode_notifysecctx:
1395 : : * Notify the security module of what the security context of an inode
1396 : : * should be. Initializes the incore security context managed by the
1397 : : * security module for this inode. Example usage: NFS client invokes
1398 : : * this hook to initialize the security context in its incore inode to the
1399 : : * value provided by the server for the file when the server returned the
1400 : : * file's attributes to the client.
1401 : : *
1402 : : * Must be called with inode->i_mutex locked.
1403 : : *
1404 : : * @inode we wish to set the security context of.
1405 : : * @ctx contains the string which we wish to set in the inode.
1406 : : * @ctxlen contains the length of @ctx.
1407 : : *
1408 : : * @inode_setsecctx:
1409 : : * Change the security context of an inode. Updates the
1410 : : * incore security context managed by the security module and invokes the
1411 : : * fs code as needed (via __vfs_setxattr_noperm) to update any backing
1412 : : * xattrs that represent the context. Example usage: NFS server invokes
1413 : : * this hook to change the security context in its incore inode and on the
1414 : : * backing filesystem to a value provided by the client on a SETATTR
1415 : : * operation.
1416 : : *
1417 : : * Must be called with inode->i_mutex locked.
1418 : : *
1419 : : * @dentry contains the inode we wish to set the security context of.
1420 : : * @ctx contains the string which we wish to set in the inode.
1421 : : * @ctxlen contains the length of @ctx.
1422 : : *
1423 : : * @inode_getsecctx:
1424 : : * On success, returns 0 and fills out @ctx and @ctxlen with the security
1425 : : * context for the given @inode.
1426 : : *
1427 : : * @inode we wish to get the security context of.
1428 : : * @ctx is a pointer in which to place the allocated security context.
1429 : : * @ctxlen points to the place to put the length of @ctx.
1430 : : * This is the main security structure.
1431 : : */
1432 : : struct security_operations {
1433 : : char name[SECURITY_NAME_MAX + 1];
1434 : :
1435 : : int (*binder_set_context_mgr) (struct task_struct *mgr);
1436 : : int (*binder_transaction) (struct task_struct *from, struct task_struct *to);
1437 : : int (*binder_transfer_binder) (struct task_struct *from, struct task_struct *to);
1438 : : int (*binder_transfer_file) (struct task_struct *from, struct task_struct *to, struct file *file);
1439 : :
1440 : : int (*ptrace_access_check) (struct task_struct *child, unsigned int mode);
1441 : : int (*ptrace_traceme) (struct task_struct *parent);
1442 : : int (*capget) (struct task_struct *target,
1443 : : kernel_cap_t *effective,
1444 : : kernel_cap_t *inheritable, kernel_cap_t *permitted);
1445 : : int (*capset) (struct cred *new,
1446 : : const struct cred *old,
1447 : : const kernel_cap_t *effective,
1448 : : const kernel_cap_t *inheritable,
1449 : : const kernel_cap_t *permitted);
1450 : : int (*capable) (const struct cred *cred, struct user_namespace *ns,
1451 : : int cap, int audit);
1452 : : int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
1453 : : int (*quota_on) (struct dentry *dentry);
1454 : : int (*syslog) (int type);
1455 : : int (*settime) (const struct timespec *ts, const struct timezone *tz);
1456 : : int (*vm_enough_memory) (struct mm_struct *mm, long pages);
1457 : :
1458 : : int (*bprm_set_creds) (struct linux_binprm *bprm);
1459 : : int (*bprm_check_security) (struct linux_binprm *bprm);
1460 : : int (*bprm_secureexec) (struct linux_binprm *bprm);
1461 : : void (*bprm_committing_creds) (struct linux_binprm *bprm);
1462 : : void (*bprm_committed_creds) (struct linux_binprm *bprm);
1463 : :
1464 : : int (*sb_alloc_security) (struct super_block *sb);
1465 : : void (*sb_free_security) (struct super_block *sb);
1466 : : int (*sb_copy_data) (char *orig, char *copy);
1467 : : int (*sb_remount) (struct super_block *sb, void *data);
1468 : : int (*sb_kern_mount) (struct super_block *sb, int flags, void *data);
1469 : : int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
1470 : : int (*sb_statfs) (struct dentry *dentry);
1471 : : int (*sb_mount) (const char *dev_name, struct path *path,
1472 : : const char *type, unsigned long flags, void *data);
1473 : : int (*sb_umount) (struct vfsmount *mnt, int flags);
1474 : : int (*sb_pivotroot) (struct path *old_path,
1475 : : struct path *new_path);
1476 : : int (*sb_set_mnt_opts) (struct super_block *sb,
1477 : : struct security_mnt_opts *opts,
1478 : : unsigned long kern_flags,
1479 : : unsigned long *set_kern_flags);
1480 : : int (*sb_clone_mnt_opts) (const struct super_block *oldsb,
1481 : : struct super_block *newsb);
1482 : : int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
1483 : : int (*dentry_init_security) (struct dentry *dentry, int mode,
1484 : : struct qstr *name, void **ctx,
1485 : : u32 *ctxlen);
1486 : :
1487 : :
1488 : : #ifdef CONFIG_SECURITY_PATH
1489 : : int (*path_unlink) (struct path *dir, struct dentry *dentry);
1490 : : int (*path_mkdir) (struct path *dir, struct dentry *dentry, umode_t mode);
1491 : : int (*path_rmdir) (struct path *dir, struct dentry *dentry);
1492 : : int (*path_mknod) (struct path *dir, struct dentry *dentry, umode_t mode,
1493 : : unsigned int dev);
1494 : : int (*path_truncate) (struct path *path);
1495 : : int (*path_symlink) (struct path *dir, struct dentry *dentry,
1496 : : const char *old_name);
1497 : : int (*path_link) (struct dentry *old_dentry, struct path *new_dir,
1498 : : struct dentry *new_dentry);
1499 : : int (*path_rename) (struct path *old_dir, struct dentry *old_dentry,
1500 : : struct path *new_dir, struct dentry *new_dentry);
1501 : : int (*path_chmod) (struct path *path, umode_t mode);
1502 : : int (*path_chown) (struct path *path, kuid_t uid, kgid_t gid);
1503 : : int (*path_chroot) (struct path *path);
1504 : : #endif
1505 : :
1506 : : int (*inode_alloc_security) (struct inode *inode);
1507 : : void (*inode_free_security) (struct inode *inode);
1508 : : int (*inode_init_security) (struct inode *inode, struct inode *dir,
1509 : : const struct qstr *qstr, const char **name,
1510 : : void **value, size_t *len);
1511 : : int (*inode_create) (struct inode *dir,
1512 : : struct dentry *dentry, umode_t mode);
1513 : : int (*inode_link) (struct dentry *old_dentry,
1514 : : struct inode *dir, struct dentry *new_dentry);
1515 : : int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
1516 : : int (*inode_symlink) (struct inode *dir,
1517 : : struct dentry *dentry, const char *old_name);
1518 : : int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, umode_t mode);
1519 : : int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
1520 : : int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
1521 : : umode_t mode, dev_t dev);
1522 : : int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
1523 : : struct inode *new_dir, struct dentry *new_dentry);
1524 : : int (*inode_readlink) (struct dentry *dentry);
1525 : : int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
1526 : : int (*inode_permission) (struct inode *inode, int mask);
1527 : : int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
1528 : : int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
1529 : : int (*inode_setxattr) (struct dentry *dentry, const char *name,
1530 : : const void *value, size_t size, int flags);
1531 : : void (*inode_post_setxattr) (struct dentry *dentry, const char *name,
1532 : : const void *value, size_t size, int flags);
1533 : : int (*inode_getxattr) (struct dentry *dentry, const char *name);
1534 : : int (*inode_listxattr) (struct dentry *dentry);
1535 : : int (*inode_removexattr) (struct dentry *dentry, const char *name);
1536 : : int (*inode_need_killpriv) (struct dentry *dentry);
1537 : : int (*inode_killpriv) (struct dentry *dentry);
1538 : : int (*inode_getsecurity) (const struct inode *inode, const char *name, void **buffer, bool alloc);
1539 : : int (*inode_setsecurity) (struct inode *inode, const char *name, const void *value, size_t size, int flags);
1540 : : int (*inode_listsecurity) (struct inode *inode, char *buffer, size_t buffer_size);
1541 : : void (*inode_getsecid) (const struct inode *inode, u32 *secid);
1542 : :
1543 : : int (*file_permission) (struct file *file, int mask);
1544 : : int (*file_alloc_security) (struct file *file);
1545 : : void (*file_free_security) (struct file *file);
1546 : : int (*file_ioctl) (struct file *file, unsigned int cmd,
1547 : : unsigned long arg);
1548 : : int (*mmap_addr) (unsigned long addr);
1549 : : int (*mmap_file) (struct file *file,
1550 : : unsigned long reqprot, unsigned long prot,
1551 : : unsigned long flags);
1552 : : int (*file_mprotect) (struct vm_area_struct *vma,
1553 : : unsigned long reqprot,
1554 : : unsigned long prot);
1555 : : int (*file_lock) (struct file *file, unsigned int cmd);
1556 : : int (*file_fcntl) (struct file *file, unsigned int cmd,
1557 : : unsigned long arg);
1558 : : int (*file_set_fowner) (struct file *file);
1559 : : int (*file_send_sigiotask) (struct task_struct *tsk,
1560 : : struct fown_struct *fown, int sig);
1561 : : int (*file_receive) (struct file *file);
1562 : : int (*file_open) (struct file *file, const struct cred *cred);
1563 : :
1564 : : int (*task_create) (unsigned long clone_flags);
1565 : : void (*task_free) (struct task_struct *task);
1566 : : int (*cred_alloc_blank) (struct cred *cred, gfp_t gfp);
1567 : : void (*cred_free) (struct cred *cred);
1568 : : int (*cred_prepare)(struct cred *new, const struct cred *old,
1569 : : gfp_t gfp);
1570 : : void (*cred_transfer)(struct cred *new, const struct cred *old);
1571 : : int (*kernel_act_as)(struct cred *new, u32 secid);
1572 : : int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
1573 : : int (*kernel_module_request)(char *kmod_name);
1574 : : int (*kernel_module_from_file)(struct file *file);
1575 : : int (*task_fix_setuid) (struct cred *new, const struct cred *old,
1576 : : int flags);
1577 : : int (*task_setpgid) (struct task_struct *p, pid_t pgid);
1578 : : int (*task_getpgid) (struct task_struct *p);
1579 : : int (*task_getsid) (struct task_struct *p);
1580 : : void (*task_getsecid) (struct task_struct *p, u32 *secid);
1581 : : int (*task_setnice) (struct task_struct *p, int nice);
1582 : : int (*task_setioprio) (struct task_struct *p, int ioprio);
1583 : : int (*task_getioprio) (struct task_struct *p);
1584 : : int (*task_setrlimit) (struct task_struct *p, unsigned int resource,
1585 : : struct rlimit *new_rlim);
1586 : : int (*task_setscheduler) (struct task_struct *p);
1587 : : int (*task_getscheduler) (struct task_struct *p);
1588 : : int (*task_movememory) (struct task_struct *p);
1589 : : int (*task_kill) (struct task_struct *p,
1590 : : struct siginfo *info, int sig, u32 secid);
1591 : : int (*task_wait) (struct task_struct *p);
1592 : : int (*task_prctl) (int option, unsigned long arg2,
1593 : : unsigned long arg3, unsigned long arg4,
1594 : : unsigned long arg5);
1595 : : void (*task_to_inode) (struct task_struct *p, struct inode *inode);
1596 : :
1597 : : int (*ipc_permission) (struct kern_ipc_perm *ipcp, short flag);
1598 : : void (*ipc_getsecid) (struct kern_ipc_perm *ipcp, u32 *secid);
1599 : :
1600 : : int (*msg_msg_alloc_security) (struct msg_msg *msg);
1601 : : void (*msg_msg_free_security) (struct msg_msg *msg);
1602 : :
1603 : : int (*msg_queue_alloc_security) (struct msg_queue *msq);
1604 : : void (*msg_queue_free_security) (struct msg_queue *msq);
1605 : : int (*msg_queue_associate) (struct msg_queue *msq, int msqflg);
1606 : : int (*msg_queue_msgctl) (struct msg_queue *msq, int cmd);
1607 : : int (*msg_queue_msgsnd) (struct msg_queue *msq,
1608 : : struct msg_msg *msg, int msqflg);
1609 : : int (*msg_queue_msgrcv) (struct msg_queue *msq,
1610 : : struct msg_msg *msg,
1611 : : struct task_struct *target,
1612 : : long type, int mode);
1613 : :
1614 : : int (*shm_alloc_security) (struct shmid_kernel *shp);
1615 : : void (*shm_free_security) (struct shmid_kernel *shp);
1616 : : int (*shm_associate) (struct shmid_kernel *shp, int shmflg);
1617 : : int (*shm_shmctl) (struct shmid_kernel *shp, int cmd);
1618 : : int (*shm_shmat) (struct shmid_kernel *shp,
1619 : : char __user *shmaddr, int shmflg);
1620 : :
1621 : : int (*sem_alloc_security) (struct sem_array *sma);
1622 : : void (*sem_free_security) (struct sem_array *sma);
1623 : : int (*sem_associate) (struct sem_array *sma, int semflg);
1624 : : int (*sem_semctl) (struct sem_array *sma, int cmd);
1625 : : int (*sem_semop) (struct sem_array *sma,
1626 : : struct sembuf *sops, unsigned nsops, int alter);
1627 : :
1628 : : int (*netlink_send) (struct sock *sk, struct sk_buff *skb);
1629 : :
1630 : : void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
1631 : :
1632 : : int (*getprocattr) (struct task_struct *p, char *name, char **value);
1633 : : int (*setprocattr) (struct task_struct *p, char *name, void *value, size_t size);
1634 : : int (*ismaclabel) (const char *name);
1635 : : int (*secid_to_secctx) (u32 secid, char **secdata, u32 *seclen);
1636 : : int (*secctx_to_secid) (const char *secdata, u32 seclen, u32 *secid);
1637 : : void (*release_secctx) (char *secdata, u32 seclen);
1638 : :
1639 : : int (*inode_notifysecctx)(struct inode *inode, void *ctx, u32 ctxlen);
1640 : : int (*inode_setsecctx)(struct dentry *dentry, void *ctx, u32 ctxlen);
1641 : : int (*inode_getsecctx)(struct inode *inode, void **ctx, u32 *ctxlen);
1642 : :
1643 : : #ifdef CONFIG_SECURITY_NETWORK
1644 : : int (*unix_stream_connect) (struct sock *sock, struct sock *other, struct sock *newsk);
1645 : : int (*unix_may_send) (struct socket *sock, struct socket *other);
1646 : :
1647 : : int (*socket_create) (int family, int type, int protocol, int kern);
1648 : : int (*socket_post_create) (struct socket *sock, int family,
1649 : : int type, int protocol, int kern);
1650 : : int (*socket_bind) (struct socket *sock,
1651 : : struct sockaddr *address, int addrlen);
1652 : : int (*socket_connect) (struct socket *sock,
1653 : : struct sockaddr *address, int addrlen);
1654 : : int (*socket_listen) (struct socket *sock, int backlog);
1655 : : int (*socket_accept) (struct socket *sock, struct socket *newsock);
1656 : : int (*socket_sendmsg) (struct socket *sock,
1657 : : struct msghdr *msg, int size);
1658 : : int (*socket_recvmsg) (struct socket *sock,
1659 : : struct msghdr *msg, int size, int flags);
1660 : : int (*socket_getsockname) (struct socket *sock);
1661 : : int (*socket_getpeername) (struct socket *sock);
1662 : : int (*socket_getsockopt) (struct socket *sock, int level, int optname);
1663 : : int (*socket_setsockopt) (struct socket *sock, int level, int optname);
1664 : : int (*socket_shutdown) (struct socket *sock, int how);
1665 : : int (*socket_sock_rcv_skb) (struct sock *sk, struct sk_buff *skb);
1666 : : int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
1667 : : int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
1668 : : int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
1669 : : void (*sk_free_security) (struct sock *sk);
1670 : : void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
1671 : : void (*sk_getsecid) (struct sock *sk, u32 *secid);
1672 : : void (*sock_graft) (struct sock *sk, struct socket *parent);
1673 : : int (*inet_conn_request) (struct sock *sk, struct sk_buff *skb,
1674 : : struct request_sock *req);
1675 : : void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req);
1676 : : void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb);
1677 : : int (*secmark_relabel_packet) (u32 secid);
1678 : : void (*secmark_refcount_inc) (void);
1679 : : void (*secmark_refcount_dec) (void);
1680 : : void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
1681 : : int (*tun_dev_alloc_security) (void **security);
1682 : : void (*tun_dev_free_security) (void *security);
1683 : : int (*tun_dev_create) (void);
1684 : : int (*tun_dev_attach_queue) (void *security);
1685 : : int (*tun_dev_attach) (struct sock *sk, void *security);
1686 : : int (*tun_dev_open) (void *security);
1687 : : void (*skb_owned_by) (struct sk_buff *skb, struct sock *sk);
1688 : : #endif /* CONFIG_SECURITY_NETWORK */
1689 : :
1690 : : #ifdef CONFIG_SECURITY_NETWORK_XFRM
1691 : : int (*xfrm_policy_alloc_security) (struct xfrm_sec_ctx **ctxp,
1692 : : struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
1693 : : int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
1694 : : void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
1695 : : int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
1696 : : int (*xfrm_state_alloc) (struct xfrm_state *x,
1697 : : struct xfrm_user_sec_ctx *sec_ctx);
1698 : : int (*xfrm_state_alloc_acquire) (struct xfrm_state *x,
1699 : : struct xfrm_sec_ctx *polsec,
1700 : : u32 secid);
1701 : : void (*xfrm_state_free_security) (struct xfrm_state *x);
1702 : : int (*xfrm_state_delete_security) (struct xfrm_state *x);
1703 : : int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1704 : : int (*xfrm_state_pol_flow_match) (struct xfrm_state *x,
1705 : : struct xfrm_policy *xp,
1706 : : const struct flowi *fl);
1707 : : int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall);
1708 : : #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1709 : :
1710 : : /* key management security hooks */
1711 : : #ifdef CONFIG_KEYS
1712 : : int (*key_alloc) (struct key *key, const struct cred *cred, unsigned long flags);
1713 : : void (*key_free) (struct key *key);
1714 : : int (*key_permission) (key_ref_t key_ref,
1715 : : const struct cred *cred,
1716 : : key_perm_t perm);
1717 : : int (*key_getsecurity)(struct key *key, char **_buffer);
1718 : : #endif /* CONFIG_KEYS */
1719 : :
1720 : : #ifdef CONFIG_AUDIT
1721 : : int (*audit_rule_init) (u32 field, u32 op, char *rulestr, void **lsmrule);
1722 : : int (*audit_rule_known) (struct audit_krule *krule);
1723 : : int (*audit_rule_match) (u32 secid, u32 field, u32 op, void *lsmrule,
1724 : : struct audit_context *actx);
1725 : : void (*audit_rule_free) (void *lsmrule);
1726 : : #endif /* CONFIG_AUDIT */
1727 : : };
1728 : :
1729 : : /* prototypes */
1730 : : extern int security_init(void);
1731 : : extern int security_module_enable(struct security_operations *ops);
1732 : : extern int register_security(struct security_operations *ops);
1733 : : extern void __init security_fixup_ops(struct security_operations *ops);
1734 : :
1735 : :
1736 : : /* Security operations */
1737 : : int security_binder_set_context_mgr(struct task_struct *mgr);
1738 : : int security_binder_transaction(struct task_struct *from, struct task_struct *to);
1739 : : int security_binder_transfer_binder(struct task_struct *from, struct task_struct *to);
1740 : : int security_binder_transfer_file(struct task_struct *from, struct task_struct *to, struct file *file);
1741 : : int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
1742 : : int security_ptrace_traceme(struct task_struct *parent);
1743 : : int security_capget(struct task_struct *target,
1744 : : kernel_cap_t *effective,
1745 : : kernel_cap_t *inheritable,
1746 : : kernel_cap_t *permitted);
1747 : : int security_capset(struct cred *new, const struct cred *old,
1748 : : const kernel_cap_t *effective,
1749 : : const kernel_cap_t *inheritable,
1750 : : const kernel_cap_t *permitted);
1751 : : int security_capable(const struct cred *cred, struct user_namespace *ns,
1752 : : int cap);
1753 : : int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
1754 : : int cap);
1755 : : int security_quotactl(int cmds, int type, int id, struct super_block *sb);
1756 : : int security_quota_on(struct dentry *dentry);
1757 : : int security_syslog(int type);
1758 : : int security_settime(const struct timespec *ts, const struct timezone *tz);
1759 : : int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
1760 : : int security_bprm_set_creds(struct linux_binprm *bprm);
1761 : : int security_bprm_check(struct linux_binprm *bprm);
1762 : : void security_bprm_committing_creds(struct linux_binprm *bprm);
1763 : : void security_bprm_committed_creds(struct linux_binprm *bprm);
1764 : : int security_bprm_secureexec(struct linux_binprm *bprm);
1765 : : int security_sb_alloc(struct super_block *sb);
1766 : : void security_sb_free(struct super_block *sb);
1767 : : int security_sb_copy_data(char *orig, char *copy);
1768 : : int security_sb_remount(struct super_block *sb, void *data);
1769 : : int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
1770 : : int security_sb_show_options(struct seq_file *m, struct super_block *sb);
1771 : : int security_sb_statfs(struct dentry *dentry);
1772 : : int security_sb_mount(const char *dev_name, struct path *path,
1773 : : const char *type, unsigned long flags, void *data);
1774 : : int security_sb_umount(struct vfsmount *mnt, int flags);
1775 : : int security_sb_pivotroot(struct path *old_path, struct path *new_path);
1776 : : int security_sb_set_mnt_opts(struct super_block *sb,
1777 : : struct security_mnt_opts *opts,
1778 : : unsigned long kern_flags,
1779 : : unsigned long *set_kern_flags);
1780 : : int security_sb_clone_mnt_opts(const struct super_block *oldsb,
1781 : : struct super_block *newsb);
1782 : : int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
1783 : : int security_dentry_init_security(struct dentry *dentry, int mode,
1784 : : struct qstr *name, void **ctx,
1785 : : u32 *ctxlen);
1786 : :
1787 : : int security_inode_alloc(struct inode *inode);
1788 : : void security_inode_free(struct inode *inode);
1789 : : int security_inode_init_security(struct inode *inode, struct inode *dir,
1790 : : const struct qstr *qstr,
1791 : : initxattrs initxattrs, void *fs_data);
1792 : : int security_old_inode_init_security(struct inode *inode, struct inode *dir,
1793 : : const struct qstr *qstr, const char **name,
1794 : : void **value, size_t *len);
1795 : : int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
1796 : : int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1797 : : struct dentry *new_dentry);
1798 : : int security_inode_unlink(struct inode *dir, struct dentry *dentry);
1799 : : int security_inode_symlink(struct inode *dir, struct dentry *dentry,
1800 : : const char *old_name);
1801 : : int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
1802 : : int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
1803 : : int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
1804 : : int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
1805 : : struct inode *new_dir, struct dentry *new_dentry);
1806 : : int security_inode_readlink(struct dentry *dentry);
1807 : : int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
1808 : : int security_inode_permission(struct inode *inode, int mask);
1809 : : int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
1810 : : int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
1811 : : int security_inode_setxattr(struct dentry *dentry, const char *name,
1812 : : const void *value, size_t size, int flags);
1813 : : void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1814 : : const void *value, size_t size, int flags);
1815 : : int security_inode_getxattr(struct dentry *dentry, const char *name);
1816 : : int security_inode_listxattr(struct dentry *dentry);
1817 : : int security_inode_removexattr(struct dentry *dentry, const char *name);
1818 : : int security_inode_need_killpriv(struct dentry *dentry);
1819 : : int security_inode_killpriv(struct dentry *dentry);
1820 : : int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
1821 : : int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
1822 : : int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
1823 : : void security_inode_getsecid(const struct inode *inode, u32 *secid);
1824 : : int security_file_permission(struct file *file, int mask);
1825 : : int security_file_alloc(struct file *file);
1826 : : void security_file_free(struct file *file);
1827 : : int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
1828 : : int security_mmap_file(struct file *file, unsigned long prot,
1829 : : unsigned long flags);
1830 : : int security_mmap_addr(unsigned long addr);
1831 : : int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1832 : : unsigned long prot);
1833 : : int security_file_lock(struct file *file, unsigned int cmd);
1834 : : int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
1835 : : int security_file_set_fowner(struct file *file);
1836 : : int security_file_send_sigiotask(struct task_struct *tsk,
1837 : : struct fown_struct *fown, int sig);
1838 : : int security_file_receive(struct file *file);
1839 : : int security_file_open(struct file *file, const struct cred *cred);
1840 : : int security_task_create(unsigned long clone_flags);
1841 : : void security_task_free(struct task_struct *task);
1842 : : int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
1843 : : void security_cred_free(struct cred *cred);
1844 : : int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
1845 : : void security_transfer_creds(struct cred *new, const struct cred *old);
1846 : : int security_kernel_act_as(struct cred *new, u32 secid);
1847 : : int security_kernel_create_files_as(struct cred *new, struct inode *inode);
1848 : : int security_kernel_module_request(char *kmod_name);
1849 : : int security_kernel_module_from_file(struct file *file);
1850 : : int security_task_fix_setuid(struct cred *new, const struct cred *old,
1851 : : int flags);
1852 : : int security_task_setpgid(struct task_struct *p, pid_t pgid);
1853 : : int security_task_getpgid(struct task_struct *p);
1854 : : int security_task_getsid(struct task_struct *p);
1855 : : void security_task_getsecid(struct task_struct *p, u32 *secid);
1856 : : int security_task_setnice(struct task_struct *p, int nice);
1857 : : int security_task_setioprio(struct task_struct *p, int ioprio);
1858 : : int security_task_getioprio(struct task_struct *p);
1859 : : int security_task_setrlimit(struct task_struct *p, unsigned int resource,
1860 : : struct rlimit *new_rlim);
1861 : : int security_task_setscheduler(struct task_struct *p);
1862 : : int security_task_getscheduler(struct task_struct *p);
1863 : : int security_task_movememory(struct task_struct *p);
1864 : : int security_task_kill(struct task_struct *p, struct siginfo *info,
1865 : : int sig, u32 secid);
1866 : : int security_task_wait(struct task_struct *p);
1867 : : int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1868 : : unsigned long arg4, unsigned long arg5);
1869 : : void security_task_to_inode(struct task_struct *p, struct inode *inode);
1870 : : int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
1871 : : void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
1872 : : int security_msg_msg_alloc(struct msg_msg *msg);
1873 : : void security_msg_msg_free(struct msg_msg *msg);
1874 : : int security_msg_queue_alloc(struct msg_queue *msq);
1875 : : void security_msg_queue_free(struct msg_queue *msq);
1876 : : int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
1877 : : int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
1878 : : int security_msg_queue_msgsnd(struct msg_queue *msq,
1879 : : struct msg_msg *msg, int msqflg);
1880 : : int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1881 : : struct task_struct *target, long type, int mode);
1882 : : int security_shm_alloc(struct shmid_kernel *shp);
1883 : : void security_shm_free(struct shmid_kernel *shp);
1884 : : int security_shm_associate(struct shmid_kernel *shp, int shmflg);
1885 : : int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
1886 : : int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
1887 : : int security_sem_alloc(struct sem_array *sma);
1888 : : void security_sem_free(struct sem_array *sma);
1889 : : int security_sem_associate(struct sem_array *sma, int semflg);
1890 : : int security_sem_semctl(struct sem_array *sma, int cmd);
1891 : : int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1892 : : unsigned nsops, int alter);
1893 : : void security_d_instantiate(struct dentry *dentry, struct inode *inode);
1894 : : int security_getprocattr(struct task_struct *p, char *name, char **value);
1895 : : int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
1896 : : int security_netlink_send(struct sock *sk, struct sk_buff *skb);
1897 : : int security_ismaclabel(const char *name);
1898 : : int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
1899 : : int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
1900 : : void security_release_secctx(char *secdata, u32 seclen);
1901 : :
1902 : : int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
1903 : : int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
1904 : : int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
1905 : : #else /* CONFIG_SECURITY */
1906 : : struct security_mnt_opts {
1907 : : };
1908 : :
1909 : : static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
1910 : : {
1911 : : }
1912 : :
1913 : : static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
1914 : : {
1915 : : }
1916 : :
1917 : : /*
1918 : : * This is the default capabilities functionality. Most of these functions
1919 : : * are just stubbed out, but a few must call the proper capable code.
1920 : : */
1921 : :
1922 : : static inline int security_init(void)
1923 : : {
1924 : : return 0;
1925 : : }
1926 : :
1927 : : static inline int security_binder_set_context_mgr(struct task_struct *mgr)
1928 : : {
1929 : : return 0;
1930 : : }
1931 : :
1932 : : static inline int security_binder_transaction(struct task_struct *from, struct task_struct *to)
1933 : : {
1934 : : return 0;
1935 : : }
1936 : :
1937 : : static inline int security_binder_transfer_binder(struct task_struct *from, struct task_struct *to)
1938 : : {
1939 : : return 0;
1940 : : }
1941 : :
1942 : : static inline int security_binder_transfer_file(struct task_struct *from, struct task_struct *to, struct file *file)
1943 : : {
1944 : : return 0;
1945 : : }
1946 : :
1947 : : static inline int security_ptrace_access_check(struct task_struct *child,
1948 : : unsigned int mode)
1949 : : {
1950 : : return cap_ptrace_access_check(child, mode);
1951 : : }
1952 : :
1953 : : static inline int security_ptrace_traceme(struct task_struct *parent)
1954 : : {
1955 : : return cap_ptrace_traceme(parent);
1956 : : }
1957 : :
1958 : : static inline int security_capget(struct task_struct *target,
1959 : : kernel_cap_t *effective,
1960 : : kernel_cap_t *inheritable,
1961 : : kernel_cap_t *permitted)
1962 : : {
1963 : : return cap_capget(target, effective, inheritable, permitted);
1964 : : }
1965 : :
1966 : : static inline int security_capset(struct cred *new,
1967 : : const struct cred *old,
1968 : : const kernel_cap_t *effective,
1969 : : const kernel_cap_t *inheritable,
1970 : : const kernel_cap_t *permitted)
1971 : : {
1972 : : return cap_capset(new, old, effective, inheritable, permitted);
1973 : : }
1974 : :
1975 : : static inline int security_capable(const struct cred *cred,
1976 : : struct user_namespace *ns, int cap)
1977 : : {
1978 : : return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT);
1979 : : }
1980 : :
1981 : : static inline int security_capable_noaudit(const struct cred *cred,
1982 : : struct user_namespace *ns, int cap) {
1983 : : return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
1984 : : }
1985 : :
1986 : : static inline int security_quotactl(int cmds, int type, int id,
1987 : : struct super_block *sb)
1988 : : {
1989 : : return 0;
1990 : : }
1991 : :
1992 : : static inline int security_quota_on(struct dentry *dentry)
1993 : : {
1994 : : return 0;
1995 : : }
1996 : :
1997 : : static inline int security_syslog(int type)
1998 : : {
1999 : : return 0;
2000 : : }
2001 : :
2002 : : static inline int security_settime(const struct timespec *ts,
2003 : : const struct timezone *tz)
2004 : : {
2005 : : return cap_settime(ts, tz);
2006 : : }
2007 : :
2008 : : static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
2009 : : {
2010 : : return cap_vm_enough_memory(mm, pages);
2011 : : }
2012 : :
2013 : : static inline int security_bprm_set_creds(struct linux_binprm *bprm)
2014 : : {
2015 : : return cap_bprm_set_creds(bprm);
2016 : : }
2017 : :
2018 : : static inline int security_bprm_check(struct linux_binprm *bprm)
2019 : : {
2020 : : return 0;
2021 : : }
2022 : :
2023 : : static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
2024 : : {
2025 : : }
2026 : :
2027 : : static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
2028 : : {
2029 : : }
2030 : :
2031 : : static inline int security_bprm_secureexec(struct linux_binprm *bprm)
2032 : : {
2033 : : return cap_bprm_secureexec(bprm);
2034 : : }
2035 : :
2036 : : static inline int security_sb_alloc(struct super_block *sb)
2037 : : {
2038 : : return 0;
2039 : : }
2040 : :
2041 : : static inline void security_sb_free(struct super_block *sb)
2042 : : { }
2043 : :
2044 : : static inline int security_sb_copy_data(char *orig, char *copy)
2045 : : {
2046 : : return 0;
2047 : : }
2048 : :
2049 : : static inline int security_sb_remount(struct super_block *sb, void *data)
2050 : : {
2051 : : return 0;
2052 : : }
2053 : :
2054 : : static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
2055 : : {
2056 : : return 0;
2057 : : }
2058 : :
2059 : : static inline int security_sb_show_options(struct seq_file *m,
2060 : : struct super_block *sb)
2061 : : {
2062 : : return 0;
2063 : : }
2064 : :
2065 : : static inline int security_sb_statfs(struct dentry *dentry)
2066 : : {
2067 : : return 0;
2068 : : }
2069 : :
2070 : : static inline int security_sb_mount(const char *dev_name, struct path *path,
2071 : : const char *type, unsigned long flags,
2072 : : void *data)
2073 : : {
2074 : : return 0;
2075 : : }
2076 : :
2077 : : static inline int security_sb_umount(struct vfsmount *mnt, int flags)
2078 : : {
2079 : : return 0;
2080 : : }
2081 : :
2082 : : static inline int security_sb_pivotroot(struct path *old_path,
2083 : : struct path *new_path)
2084 : : {
2085 : : return 0;
2086 : : }
2087 : :
2088 : : static inline int security_sb_set_mnt_opts(struct super_block *sb,
2089 : : struct security_mnt_opts *opts,
2090 : : unsigned long kern_flags,
2091 : : unsigned long *set_kern_flags)
2092 : : {
2093 : : return 0;
2094 : : }
2095 : :
2096 : : static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
2097 : : struct super_block *newsb)
2098 : : {
2099 : : return 0;
2100 : : }
2101 : :
2102 : : static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
2103 : : {
2104 : : return 0;
2105 : : }
2106 : :
2107 : : static inline int security_inode_alloc(struct inode *inode)
2108 : : {
2109 : : return 0;
2110 : : }
2111 : :
2112 : : static inline void security_inode_free(struct inode *inode)
2113 : : { }
2114 : :
2115 : : static inline int security_dentry_init_security(struct dentry *dentry,
2116 : : int mode,
2117 : : struct qstr *name,
2118 : : void **ctx,
2119 : : u32 *ctxlen)
2120 : : {
2121 : : return -EOPNOTSUPP;
2122 : : }
2123 : :
2124 : :
2125 : : static inline int security_inode_init_security(struct inode *inode,
2126 : : struct inode *dir,
2127 : : const struct qstr *qstr,
2128 : : const initxattrs initxattrs,
2129 : : void *fs_data)
2130 : : {
2131 : : return 0;
2132 : : }
2133 : :
2134 : : static inline int security_old_inode_init_security(struct inode *inode,
2135 : : struct inode *dir,
2136 : : const struct qstr *qstr,
2137 : : const char **name,
2138 : : void **value, size_t *len)
2139 : : {
2140 : : return -EOPNOTSUPP;
2141 : : }
2142 : :
2143 : : static inline int security_inode_create(struct inode *dir,
2144 : : struct dentry *dentry,
2145 : : umode_t mode)
2146 : : {
2147 : : return 0;
2148 : : }
2149 : :
2150 : : static inline int security_inode_link(struct dentry *old_dentry,
2151 : : struct inode *dir,
2152 : : struct dentry *new_dentry)
2153 : : {
2154 : : return 0;
2155 : : }
2156 : :
2157 : : static inline int security_inode_unlink(struct inode *dir,
2158 : : struct dentry *dentry)
2159 : : {
2160 : : return 0;
2161 : : }
2162 : :
2163 : : static inline int security_inode_symlink(struct inode *dir,
2164 : : struct dentry *dentry,
2165 : : const char *old_name)
2166 : : {
2167 : : return 0;
2168 : : }
2169 : :
2170 : : static inline int security_inode_mkdir(struct inode *dir,
2171 : : struct dentry *dentry,
2172 : : int mode)
2173 : : {
2174 : : return 0;
2175 : : }
2176 : :
2177 : : static inline int security_inode_rmdir(struct inode *dir,
2178 : : struct dentry *dentry)
2179 : : {
2180 : : return 0;
2181 : : }
2182 : :
2183 : : static inline int security_inode_mknod(struct inode *dir,
2184 : : struct dentry *dentry,
2185 : : int mode, dev_t dev)
2186 : : {
2187 : : return 0;
2188 : : }
2189 : :
2190 : : static inline int security_inode_rename(struct inode *old_dir,
2191 : : struct dentry *old_dentry,
2192 : : struct inode *new_dir,
2193 : : struct dentry *new_dentry)
2194 : : {
2195 : : return 0;
2196 : : }
2197 : :
2198 : : static inline int security_inode_readlink(struct dentry *dentry)
2199 : : {
2200 : : return 0;
2201 : : }
2202 : :
2203 : : static inline int security_inode_follow_link(struct dentry *dentry,
2204 : : struct nameidata *nd)
2205 : : {
2206 : : return 0;
2207 : : }
2208 : :
2209 : : static inline int security_inode_permission(struct inode *inode, int mask)
2210 : : {
2211 : : return 0;
2212 : : }
2213 : :
2214 : : static inline int security_inode_setattr(struct dentry *dentry,
2215 : : struct iattr *attr)
2216 : : {
2217 : : return 0;
2218 : : }
2219 : :
2220 : : static inline int security_inode_getattr(struct vfsmount *mnt,
2221 : : struct dentry *dentry)
2222 : : {
2223 : : return 0;
2224 : : }
2225 : :
2226 : : static inline int security_inode_setxattr(struct dentry *dentry,
2227 : : const char *name, const void *value, size_t size, int flags)
2228 : : {
2229 : : return cap_inode_setxattr(dentry, name, value, size, flags);
2230 : : }
2231 : :
2232 : : static inline void security_inode_post_setxattr(struct dentry *dentry,
2233 : : const char *name, const void *value, size_t size, int flags)
2234 : : { }
2235 : :
2236 : : static inline int security_inode_getxattr(struct dentry *dentry,
2237 : : const char *name)
2238 : : {
2239 : : return 0;
2240 : : }
2241 : :
2242 : : static inline int security_inode_listxattr(struct dentry *dentry)
2243 : : {
2244 : : return 0;
2245 : : }
2246 : :
2247 : : static inline int security_inode_removexattr(struct dentry *dentry,
2248 : : const char *name)
2249 : : {
2250 : : return cap_inode_removexattr(dentry, name);
2251 : : }
2252 : :
2253 : : static inline int security_inode_need_killpriv(struct dentry *dentry)
2254 : : {
2255 : : return cap_inode_need_killpriv(dentry);
2256 : : }
2257 : :
2258 : : static inline int security_inode_killpriv(struct dentry *dentry)
2259 : : {
2260 : : return cap_inode_killpriv(dentry);
2261 : : }
2262 : :
2263 : : static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
2264 : : {
2265 : : return -EOPNOTSUPP;
2266 : : }
2267 : :
2268 : : static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
2269 : : {
2270 : : return -EOPNOTSUPP;
2271 : : }
2272 : :
2273 : : static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
2274 : : {
2275 : : return 0;
2276 : : }
2277 : :
2278 : : static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
2279 : : {
2280 : : *secid = 0;
2281 : : }
2282 : :
2283 : : static inline int security_file_permission(struct file *file, int mask)
2284 : : {
2285 : : return 0;
2286 : : }
2287 : :
2288 : : static inline int security_file_alloc(struct file *file)
2289 : : {
2290 : : return 0;
2291 : : }
2292 : :
2293 : : static inline void security_file_free(struct file *file)
2294 : : { }
2295 : :
2296 : : static inline int security_file_ioctl(struct file *file, unsigned int cmd,
2297 : : unsigned long arg)
2298 : : {
2299 : : return 0;
2300 : : }
2301 : :
2302 : : static inline int security_mmap_file(struct file *file, unsigned long prot,
2303 : : unsigned long flags)
2304 : : {
2305 : : return 0;
2306 : : }
2307 : :
2308 : : static inline int security_mmap_addr(unsigned long addr)
2309 : : {
2310 : : return cap_mmap_addr(addr);
2311 : : }
2312 : :
2313 : : static inline int security_file_mprotect(struct vm_area_struct *vma,
2314 : : unsigned long reqprot,
2315 : : unsigned long prot)
2316 : : {
2317 : : return 0;
2318 : : }
2319 : :
2320 : : static inline int security_file_lock(struct file *file, unsigned int cmd)
2321 : : {
2322 : : return 0;
2323 : : }
2324 : :
2325 : : static inline int security_file_fcntl(struct file *file, unsigned int cmd,
2326 : : unsigned long arg)
2327 : : {
2328 : : return 0;
2329 : : }
2330 : :
2331 : : static inline int security_file_set_fowner(struct file *file)
2332 : : {
2333 : : return 0;
2334 : : }
2335 : :
2336 : : static inline int security_file_send_sigiotask(struct task_struct *tsk,
2337 : : struct fown_struct *fown,
2338 : : int sig)
2339 : : {
2340 : : return 0;
2341 : : }
2342 : :
2343 : : static inline int security_file_receive(struct file *file)
2344 : : {
2345 : : return 0;
2346 : : }
2347 : :
2348 : : static inline int security_file_open(struct file *file,
2349 : : const struct cred *cred)
2350 : : {
2351 : : return 0;
2352 : : }
2353 : :
2354 : : static inline int security_task_create(unsigned long clone_flags)
2355 : : {
2356 : : return 0;
2357 : : }
2358 : :
2359 : : static inline void security_task_free(struct task_struct *task)
2360 : : { }
2361 : :
2362 : : static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
2363 : : {
2364 : : return 0;
2365 : : }
2366 : :
2367 : : static inline void security_cred_free(struct cred *cred)
2368 : : { }
2369 : :
2370 : : static inline int security_prepare_creds(struct cred *new,
2371 : : const struct cred *old,
2372 : : gfp_t gfp)
2373 : : {
2374 : : return 0;
2375 : : }
2376 : :
2377 : : static inline void security_transfer_creds(struct cred *new,
2378 : : const struct cred *old)
2379 : : {
2380 : : }
2381 : :
2382 : : static inline int security_kernel_act_as(struct cred *cred, u32 secid)
2383 : : {
2384 : : return 0;
2385 : : }
2386 : :
2387 : : static inline int security_kernel_create_files_as(struct cred *cred,
2388 : : struct inode *inode)
2389 : : {
2390 : : return 0;
2391 : : }
2392 : :
2393 : : static inline int security_kernel_module_request(char *kmod_name)
2394 : : {
2395 : : return 0;
2396 : : }
2397 : :
2398 : : static inline int security_kernel_module_from_file(struct file *file)
2399 : : {
2400 : : return 0;
2401 : : }
2402 : :
2403 : : static inline int security_task_fix_setuid(struct cred *new,
2404 : : const struct cred *old,
2405 : : int flags)
2406 : : {
2407 : : return cap_task_fix_setuid(new, old, flags);
2408 : : }
2409 : :
2410 : : static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
2411 : : {
2412 : : return 0;
2413 : : }
2414 : :
2415 : : static inline int security_task_getpgid(struct task_struct *p)
2416 : : {
2417 : : return 0;
2418 : : }
2419 : :
2420 : : static inline int security_task_getsid(struct task_struct *p)
2421 : : {
2422 : : return 0;
2423 : : }
2424 : :
2425 : : static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
2426 : : {
2427 : : *secid = 0;
2428 : : }
2429 : :
2430 : : static inline int security_task_setnice(struct task_struct *p, int nice)
2431 : : {
2432 : : return cap_task_setnice(p, nice);
2433 : : }
2434 : :
2435 : : static inline int security_task_setioprio(struct task_struct *p, int ioprio)
2436 : : {
2437 : : return cap_task_setioprio(p, ioprio);
2438 : : }
2439 : :
2440 : : static inline int security_task_getioprio(struct task_struct *p)
2441 : : {
2442 : : return 0;
2443 : : }
2444 : :
2445 : : static inline int security_task_setrlimit(struct task_struct *p,
2446 : : unsigned int resource,
2447 : : struct rlimit *new_rlim)
2448 : : {
2449 : : return 0;
2450 : : }
2451 : :
2452 : : static inline int security_task_setscheduler(struct task_struct *p)
2453 : : {
2454 : : return cap_task_setscheduler(p);
2455 : : }
2456 : :
2457 : : static inline int security_task_getscheduler(struct task_struct *p)
2458 : : {
2459 : : return 0;
2460 : : }
2461 : :
2462 : : static inline int security_task_movememory(struct task_struct *p)
2463 : : {
2464 : : return 0;
2465 : : }
2466 : :
2467 : : static inline int security_task_kill(struct task_struct *p,
2468 : : struct siginfo *info, int sig,
2469 : : u32 secid)
2470 : : {
2471 : : return 0;
2472 : : }
2473 : :
2474 : : static inline int security_task_wait(struct task_struct *p)
2475 : : {
2476 : : return 0;
2477 : : }
2478 : :
2479 : : static inline int security_task_prctl(int option, unsigned long arg2,
2480 : : unsigned long arg3,
2481 : : unsigned long arg4,
2482 : : unsigned long arg5)
2483 : : {
2484 : : return cap_task_prctl(option, arg2, arg3, arg3, arg5);
2485 : : }
2486 : :
2487 : : static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
2488 : : { }
2489 : :
2490 : : static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
2491 : : short flag)
2492 : : {
2493 : : return 0;
2494 : : }
2495 : :
2496 : : static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
2497 : : {
2498 : : *secid = 0;
2499 : : }
2500 : :
2501 : : static inline int security_msg_msg_alloc(struct msg_msg *msg)
2502 : : {
2503 : : return 0;
2504 : : }
2505 : :
2506 : : static inline void security_msg_msg_free(struct msg_msg *msg)
2507 : : { }
2508 : :
2509 : : static inline int security_msg_queue_alloc(struct msg_queue *msq)
2510 : : {
2511 : : return 0;
2512 : : }
2513 : :
2514 : : static inline void security_msg_queue_free(struct msg_queue *msq)
2515 : : { }
2516 : :
2517 : : static inline int security_msg_queue_associate(struct msg_queue *msq,
2518 : : int msqflg)
2519 : : {
2520 : : return 0;
2521 : : }
2522 : :
2523 : : static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
2524 : : {
2525 : : return 0;
2526 : : }
2527 : :
2528 : : static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
2529 : : struct msg_msg *msg, int msqflg)
2530 : : {
2531 : : return 0;
2532 : : }
2533 : :
2534 : : static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
2535 : : struct msg_msg *msg,
2536 : : struct task_struct *target,
2537 : : long type, int mode)
2538 : : {
2539 : : return 0;
2540 : : }
2541 : :
2542 : : static inline int security_shm_alloc(struct shmid_kernel *shp)
2543 : : {
2544 : : return 0;
2545 : : }
2546 : :
2547 : : static inline void security_shm_free(struct shmid_kernel *shp)
2548 : : { }
2549 : :
2550 : : static inline int security_shm_associate(struct shmid_kernel *shp,
2551 : : int shmflg)
2552 : : {
2553 : : return 0;
2554 : : }
2555 : :
2556 : : static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
2557 : : {
2558 : : return 0;
2559 : : }
2560 : :
2561 : : static inline int security_shm_shmat(struct shmid_kernel *shp,
2562 : : char __user *shmaddr, int shmflg)
2563 : : {
2564 : : return 0;
2565 : : }
2566 : :
2567 : : static inline int security_sem_alloc(struct sem_array *sma)
2568 : : {
2569 : : return 0;
2570 : : }
2571 : :
2572 : : static inline void security_sem_free(struct sem_array *sma)
2573 : : { }
2574 : :
2575 : : static inline int security_sem_associate(struct sem_array *sma, int semflg)
2576 : : {
2577 : : return 0;
2578 : : }
2579 : :
2580 : : static inline int security_sem_semctl(struct sem_array *sma, int cmd)
2581 : : {
2582 : : return 0;
2583 : : }
2584 : :
2585 : : static inline int security_sem_semop(struct sem_array *sma,
2586 : : struct sembuf *sops, unsigned nsops,
2587 : : int alter)
2588 : : {
2589 : : return 0;
2590 : : }
2591 : :
2592 : : static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
2593 : : { }
2594 : :
2595 : : static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
2596 : : {
2597 : : return -EINVAL;
2598 : : }
2599 : :
2600 : : static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
2601 : : {
2602 : : return -EINVAL;
2603 : : }
2604 : :
2605 : : static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
2606 : : {
2607 : : return cap_netlink_send(sk, skb);
2608 : : }
2609 : :
2610 : : static inline int security_ismaclabel(const char *name)
2611 : : {
2612 : : return 0;
2613 : : }
2614 : :
2615 : : static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2616 : : {
2617 : : return -EOPNOTSUPP;
2618 : : }
2619 : :
2620 : : static inline int security_secctx_to_secid(const char *secdata,
2621 : : u32 seclen,
2622 : : u32 *secid)
2623 : : {
2624 : : return -EOPNOTSUPP;
2625 : : }
2626 : :
2627 : : static inline void security_release_secctx(char *secdata, u32 seclen)
2628 : : {
2629 : : }
2630 : :
2631 : : static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
2632 : : {
2633 : : return -EOPNOTSUPP;
2634 : : }
2635 : : static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
2636 : : {
2637 : : return -EOPNOTSUPP;
2638 : : }
2639 : : static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
2640 : : {
2641 : : return -EOPNOTSUPP;
2642 : : }
2643 : : #endif /* CONFIG_SECURITY */
2644 : :
2645 : : #ifdef CONFIG_SECURITY_NETWORK
2646 : :
2647 : : int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
2648 : : int security_unix_may_send(struct socket *sock, struct socket *other);
2649 : : int security_socket_create(int family, int type, int protocol, int kern);
2650 : : int security_socket_post_create(struct socket *sock, int family,
2651 : : int type, int protocol, int kern);
2652 : : int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
2653 : : int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
2654 : : int security_socket_listen(struct socket *sock, int backlog);
2655 : : int security_socket_accept(struct socket *sock, struct socket *newsock);
2656 : : int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
2657 : : int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2658 : : int size, int flags);
2659 : : int security_socket_getsockname(struct socket *sock);
2660 : : int security_socket_getpeername(struct socket *sock);
2661 : : int security_socket_getsockopt(struct socket *sock, int level, int optname);
2662 : : int security_socket_setsockopt(struct socket *sock, int level, int optname);
2663 : : int security_socket_shutdown(struct socket *sock, int how);
2664 : : int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
2665 : : int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2666 : : int __user *optlen, unsigned len);
2667 : : int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
2668 : : int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
2669 : : void security_sk_free(struct sock *sk);
2670 : : void security_sk_clone(const struct sock *sk, struct sock *newsk);
2671 : : void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
2672 : : void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
2673 : : void security_sock_graft(struct sock*sk, struct socket *parent);
2674 : : int security_inet_conn_request(struct sock *sk,
2675 : : struct sk_buff *skb, struct request_sock *req);
2676 : : void security_inet_csk_clone(struct sock *newsk,
2677 : : const struct request_sock *req);
2678 : : void security_inet_conn_established(struct sock *sk,
2679 : : struct sk_buff *skb);
2680 : : int security_secmark_relabel_packet(u32 secid);
2681 : : void security_secmark_refcount_inc(void);
2682 : : void security_secmark_refcount_dec(void);
2683 : : int security_tun_dev_alloc_security(void **security);
2684 : : void security_tun_dev_free_security(void *security);
2685 : : int security_tun_dev_create(void);
2686 : : int security_tun_dev_attach_queue(void *security);
2687 : : int security_tun_dev_attach(struct sock *sk, void *security);
2688 : : int security_tun_dev_open(void *security);
2689 : :
2690 : : void security_skb_owned_by(struct sk_buff *skb, struct sock *sk);
2691 : :
2692 : : #else /* CONFIG_SECURITY_NETWORK */
2693 : : static inline int security_unix_stream_connect(struct sock *sock,
2694 : : struct sock *other,
2695 : : struct sock *newsk)
2696 : : {
2697 : : return 0;
2698 : : }
2699 : :
2700 : : static inline int security_unix_may_send(struct socket *sock,
2701 : : struct socket *other)
2702 : : {
2703 : : return 0;
2704 : : }
2705 : :
2706 : : static inline int security_socket_create(int family, int type,
2707 : : int protocol, int kern)
2708 : : {
2709 : : return 0;
2710 : : }
2711 : :
2712 : : static inline int security_socket_post_create(struct socket *sock,
2713 : : int family,
2714 : : int type,
2715 : : int protocol, int kern)
2716 : : {
2717 : : return 0;
2718 : : }
2719 : :
2720 : : static inline int security_socket_bind(struct socket *sock,
2721 : : struct sockaddr *address,
2722 : : int addrlen)
2723 : : {
2724 : : return 0;
2725 : : }
2726 : :
2727 : : static inline int security_socket_connect(struct socket *sock,
2728 : : struct sockaddr *address,
2729 : : int addrlen)
2730 : : {
2731 : : return 0;
2732 : : }
2733 : :
2734 : : static inline int security_socket_listen(struct socket *sock, int backlog)
2735 : : {
2736 : : return 0;
2737 : : }
2738 : :
2739 : : static inline int security_socket_accept(struct socket *sock,
2740 : : struct socket *newsock)
2741 : : {
2742 : : return 0;
2743 : : }
2744 : :
2745 : : static inline int security_socket_sendmsg(struct socket *sock,
2746 : : struct msghdr *msg, int size)
2747 : : {
2748 : : return 0;
2749 : : }
2750 : :
2751 : : static inline int security_socket_recvmsg(struct socket *sock,
2752 : : struct msghdr *msg, int size,
2753 : : int flags)
2754 : : {
2755 : : return 0;
2756 : : }
2757 : :
2758 : : static inline int security_socket_getsockname(struct socket *sock)
2759 : : {
2760 : : return 0;
2761 : : }
2762 : :
2763 : : static inline int security_socket_getpeername(struct socket *sock)
2764 : : {
2765 : : return 0;
2766 : : }
2767 : :
2768 : : static inline int security_socket_getsockopt(struct socket *sock,
2769 : : int level, int optname)
2770 : : {
2771 : : return 0;
2772 : : }
2773 : :
2774 : : static inline int security_socket_setsockopt(struct socket *sock,
2775 : : int level, int optname)
2776 : : {
2777 : : return 0;
2778 : : }
2779 : :
2780 : : static inline int security_socket_shutdown(struct socket *sock, int how)
2781 : : {
2782 : : return 0;
2783 : : }
2784 : : static inline int security_sock_rcv_skb(struct sock *sk,
2785 : : struct sk_buff *skb)
2786 : : {
2787 : : return 0;
2788 : : }
2789 : :
2790 : : static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2791 : : int __user *optlen, unsigned len)
2792 : : {
2793 : : return -ENOPROTOOPT;
2794 : : }
2795 : :
2796 : : static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
2797 : : {
2798 : : return -ENOPROTOOPT;
2799 : : }
2800 : :
2801 : : static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2802 : : {
2803 : : return 0;
2804 : : }
2805 : :
2806 : : static inline void security_sk_free(struct sock *sk)
2807 : : {
2808 : : }
2809 : :
2810 : : static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
2811 : : {
2812 : : }
2813 : :
2814 : : static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
2815 : : {
2816 : : }
2817 : :
2818 : : static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2819 : : {
2820 : : }
2821 : :
2822 : : static inline void security_sock_graft(struct sock *sk, struct socket *parent)
2823 : : {
2824 : : }
2825 : :
2826 : : static inline int security_inet_conn_request(struct sock *sk,
2827 : : struct sk_buff *skb, struct request_sock *req)
2828 : : {
2829 : : return 0;
2830 : : }
2831 : :
2832 : : static inline void security_inet_csk_clone(struct sock *newsk,
2833 : : const struct request_sock *req)
2834 : : {
2835 : : }
2836 : :
2837 : : static inline void security_inet_conn_established(struct sock *sk,
2838 : : struct sk_buff *skb)
2839 : : {
2840 : : }
2841 : :
2842 : : static inline int security_secmark_relabel_packet(u32 secid)
2843 : : {
2844 : : return 0;
2845 : : }
2846 : :
2847 : : static inline void security_secmark_refcount_inc(void)
2848 : : {
2849 : : }
2850 : :
2851 : : static inline void security_secmark_refcount_dec(void)
2852 : : {
2853 : : }
2854 : :
2855 : : static inline int security_tun_dev_alloc_security(void **security)
2856 : : {
2857 : : return 0;
2858 : : }
2859 : :
2860 : : static inline void security_tun_dev_free_security(void *security)
2861 : : {
2862 : : }
2863 : :
2864 : : static inline int security_tun_dev_create(void)
2865 : : {
2866 : : return 0;
2867 : : }
2868 : :
2869 : : static inline int security_tun_dev_attach_queue(void *security)
2870 : : {
2871 : : return 0;
2872 : : }
2873 : :
2874 : : static inline int security_tun_dev_attach(struct sock *sk, void *security)
2875 : : {
2876 : : return 0;
2877 : : }
2878 : :
2879 : : static inline int security_tun_dev_open(void *security)
2880 : : {
2881 : : return 0;
2882 : : }
2883 : :
2884 : : static inline void security_skb_owned_by(struct sk_buff *skb, struct sock *sk)
2885 : : {
2886 : : }
2887 : :
2888 : : #endif /* CONFIG_SECURITY_NETWORK */
2889 : :
2890 : : #ifdef CONFIG_SECURITY_NETWORK_XFRM
2891 : :
2892 : : int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
2893 : : struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
2894 : : int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
2895 : : void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
2896 : : int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
2897 : : int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
2898 : : int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2899 : : struct xfrm_sec_ctx *polsec, u32 secid);
2900 : : int security_xfrm_state_delete(struct xfrm_state *x);
2901 : : void security_xfrm_state_free(struct xfrm_state *x);
2902 : : int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
2903 : : int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2904 : : struct xfrm_policy *xp,
2905 : : const struct flowi *fl);
2906 : : int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
2907 : : void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
2908 : :
2909 : : #else /* CONFIG_SECURITY_NETWORK_XFRM */
2910 : :
2911 : : static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
2912 : : struct xfrm_user_sec_ctx *sec_ctx,
2913 : : gfp_t gfp)
2914 : : {
2915 : : return 0;
2916 : : }
2917 : :
2918 : : static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
2919 : : {
2920 : : return 0;
2921 : : }
2922 : :
2923 : : static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
2924 : : {
2925 : : }
2926 : :
2927 : : static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
2928 : : {
2929 : : return 0;
2930 : : }
2931 : :
2932 : : static inline int security_xfrm_state_alloc(struct xfrm_state *x,
2933 : : struct xfrm_user_sec_ctx *sec_ctx)
2934 : : {
2935 : : return 0;
2936 : : }
2937 : :
2938 : : static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2939 : : struct xfrm_sec_ctx *polsec, u32 secid)
2940 : : {
2941 : : return 0;
2942 : : }
2943 : :
2944 : : static inline void security_xfrm_state_free(struct xfrm_state *x)
2945 : : {
2946 : : }
2947 : :
2948 : : static inline int security_xfrm_state_delete(struct xfrm_state *x)
2949 : : {
2950 : : return 0;
2951 : : }
2952 : :
2953 : : static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
2954 : : {
2955 : : return 0;
2956 : : }
2957 : :
2958 : : static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2959 : : struct xfrm_policy *xp, const struct flowi *fl)
2960 : : {
2961 : : return 1;
2962 : : }
2963 : :
2964 : : static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
2965 : : {
2966 : : return 0;
2967 : : }
2968 : :
2969 : : static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2970 : : {
2971 : : }
2972 : :
2973 : : #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2974 : :
2975 : : #ifdef CONFIG_SECURITY_PATH
2976 : : int security_path_unlink(struct path *dir, struct dentry *dentry);
2977 : : int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode);
2978 : : int security_path_rmdir(struct path *dir, struct dentry *dentry);
2979 : : int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode,
2980 : : unsigned int dev);
2981 : : int security_path_truncate(struct path *path);
2982 : : int security_path_symlink(struct path *dir, struct dentry *dentry,
2983 : : const char *old_name);
2984 : : int security_path_link(struct dentry *old_dentry, struct path *new_dir,
2985 : : struct dentry *new_dentry);
2986 : : int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
2987 : : struct path *new_dir, struct dentry *new_dentry);
2988 : : int security_path_chmod(struct path *path, umode_t mode);
2989 : : int security_path_chown(struct path *path, kuid_t uid, kgid_t gid);
2990 : : int security_path_chroot(struct path *path);
2991 : : #else /* CONFIG_SECURITY_PATH */
2992 : : static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
2993 : : {
2994 : : return 0;
2995 : : }
2996 : :
2997 : : static inline int security_path_mkdir(struct path *dir, struct dentry *dentry,
2998 : : umode_t mode)
2999 : : {
3000 : : return 0;
3001 : : }
3002 : :
3003 : : static inline int security_path_rmdir(struct path *dir, struct dentry *dentry)
3004 : : {
3005 : : return 0;
3006 : : }
3007 : :
3008 : : static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
3009 : : umode_t mode, unsigned int dev)
3010 : : {
3011 : : return 0;
3012 : : }
3013 : :
3014 : : static inline int security_path_truncate(struct path *path)
3015 : : {
3016 : : return 0;
3017 : : }
3018 : :
3019 : : static inline int security_path_symlink(struct path *dir, struct dentry *dentry,
3020 : : const char *old_name)
3021 : : {
3022 : : return 0;
3023 : : }
3024 : :
3025 : : static inline int security_path_link(struct dentry *old_dentry,
3026 : : struct path *new_dir,
3027 : : struct dentry *new_dentry)
3028 : : {
3029 : : return 0;
3030 : : }
3031 : :
3032 : : static inline int security_path_rename(struct path *old_dir,
3033 : : struct dentry *old_dentry,
3034 : : struct path *new_dir,
3035 : : struct dentry *new_dentry)
3036 : : {
3037 : : return 0;
3038 : : }
3039 : :
3040 : : static inline int security_path_chmod(struct path *path, umode_t mode)
3041 : : {
3042 : : return 0;
3043 : : }
3044 : :
3045 : : static inline int security_path_chown(struct path *path, kuid_t uid, kgid_t gid)
3046 : : {
3047 : : return 0;
3048 : : }
3049 : :
3050 : : static inline int security_path_chroot(struct path *path)
3051 : : {
3052 : : return 0;
3053 : : }
3054 : : #endif /* CONFIG_SECURITY_PATH */
3055 : :
3056 : : #ifdef CONFIG_KEYS
3057 : : #ifdef CONFIG_SECURITY
3058 : :
3059 : : int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
3060 : : void security_key_free(struct key *key);
3061 : : int security_key_permission(key_ref_t key_ref,
3062 : : const struct cred *cred, key_perm_t perm);
3063 : : int security_key_getsecurity(struct key *key, char **_buffer);
3064 : :
3065 : : #else
3066 : :
3067 : : static inline int security_key_alloc(struct key *key,
3068 : : const struct cred *cred,
3069 : : unsigned long flags)
3070 : : {
3071 : : return 0;
3072 : : }
3073 : :
3074 : : static inline void security_key_free(struct key *key)
3075 : : {
3076 : : }
3077 : :
3078 : : static inline int security_key_permission(key_ref_t key_ref,
3079 : : const struct cred *cred,
3080 : : key_perm_t perm)
3081 : : {
3082 : : return 0;
3083 : : }
3084 : :
3085 : : static inline int security_key_getsecurity(struct key *key, char **_buffer)
3086 : : {
3087 : : *_buffer = NULL;
3088 : : return 0;
3089 : : }
3090 : :
3091 : : #endif
3092 : : #endif /* CONFIG_KEYS */
3093 : :
3094 : : #ifdef CONFIG_AUDIT
3095 : : #ifdef CONFIG_SECURITY
3096 : : int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
3097 : : int security_audit_rule_known(struct audit_krule *krule);
3098 : : int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
3099 : : struct audit_context *actx);
3100 : : void security_audit_rule_free(void *lsmrule);
3101 : :
3102 : : #else
3103 : :
3104 : : static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
3105 : : void **lsmrule)
3106 : : {
3107 : : return 0;
3108 : : }
3109 : :
3110 : : static inline int security_audit_rule_known(struct audit_krule *krule)
3111 : : {
3112 : : return 0;
3113 : : }
3114 : :
3115 : : static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
3116 : : void *lsmrule, struct audit_context *actx)
3117 : : {
3118 : : return 0;
3119 : : }
3120 : :
3121 : : static inline void security_audit_rule_free(void *lsmrule)
3122 : : { }
3123 : :
3124 : : #endif /* CONFIG_SECURITY */
3125 : : #endif /* CONFIG_AUDIT */
3126 : :
3127 : : #ifdef CONFIG_SECURITYFS
3128 : :
3129 : : extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
3130 : : struct dentry *parent, void *data,
3131 : : const struct file_operations *fops);
3132 : : extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
3133 : : extern void securityfs_remove(struct dentry *dentry);
3134 : :
3135 : : #else /* CONFIG_SECURITYFS */
3136 : :
3137 : : static inline struct dentry *securityfs_create_dir(const char *name,
3138 : : struct dentry *parent)
3139 : : {
3140 : : return ERR_PTR(-ENODEV);
3141 : : }
3142 : :
3143 : : static inline struct dentry *securityfs_create_file(const char *name,
3144 : : umode_t mode,
3145 : : struct dentry *parent,
3146 : : void *data,
3147 : : const struct file_operations *fops)
3148 : : {
3149 : : return ERR_PTR(-ENODEV);
3150 : : }
3151 : :
3152 : : static inline void securityfs_remove(struct dentry *dentry)
3153 : : {}
3154 : :
3155 : : #endif
3156 : :
3157 : : #ifdef CONFIG_SECURITY
3158 : :
3159 : : static inline char *alloc_secdata(void)
3160 : : {
3161 : 5 : return (char *)get_zeroed_page(GFP_KERNEL);
3162 : : }
3163 : :
3164 : : static inline void free_secdata(void *secdata)
3165 : : {
3166 : 3011 : free_page((unsigned long)secdata);
3167 : : }
3168 : :
3169 : : #else
3170 : :
3171 : : static inline char *alloc_secdata(void)
3172 : : {
3173 : : return (char *)1;
3174 : : }
3175 : :
3176 : : static inline void free_secdata(void *secdata)
3177 : : { }
3178 : : #endif /* CONFIG_SECURITY */
3179 : :
3180 : : #ifdef CONFIG_SECURITY_YAMA
3181 : : extern int yama_ptrace_access_check(struct task_struct *child,
3182 : : unsigned int mode);
3183 : : extern int yama_ptrace_traceme(struct task_struct *parent);
3184 : : extern void yama_task_free(struct task_struct *task);
3185 : : extern int yama_task_prctl(int option, unsigned long arg2, unsigned long arg3,
3186 : : unsigned long arg4, unsigned long arg5);
3187 : : #else
3188 : : static inline int yama_ptrace_access_check(struct task_struct *child,
3189 : : unsigned int mode)
3190 : : {
3191 : : return 0;
3192 : : }
3193 : :
3194 : : static inline int yama_ptrace_traceme(struct task_struct *parent)
3195 : : {
3196 : : return 0;
3197 : : }
3198 : :
3199 : : static inline void yama_task_free(struct task_struct *task)
3200 : : {
3201 : : }
3202 : :
3203 : : static inline int yama_task_prctl(int option, unsigned long arg2,
3204 : : unsigned long arg3, unsigned long arg4,
3205 : : unsigned long arg5)
3206 : : {
3207 : : return -ENOSYS;
3208 : : }
3209 : : #endif /* CONFIG_SECURITY_YAMA */
3210 : :
3211 : : #endif /* ! __LINUX_SECURITY_H */
3212 : :
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