Root/security/security.c

1/*
2 * Security plug functions
3 *
4 * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
5 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
6 * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 */
13
14#include <linux/capability.h>
15#include <linux/module.h>
16#include <linux/init.h>
17#include <linux/kernel.h>
18#include <linux/security.h>
19#include <linux/integrity.h>
20#include <linux/ima.h>
21#include <linux/evm.h>
22#include <linux/fsnotify.h>
23#include <linux/mman.h>
24#include <linux/mount.h>
25#include <linux/personality.h>
26#include <linux/backing-dev.h>
27#include <net/flow.h>
28
29#define MAX_LSM_EVM_XATTR 2
30
31/* Boot-time LSM user choice */
32static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
33    CONFIG_DEFAULT_SECURITY;
34
35static struct security_operations *security_ops;
36static struct security_operations default_security_ops = {
37    .name = "default",
38};
39
40static inline int __init verify(struct security_operations *ops)
41{
42    /* verify the security_operations structure exists */
43    if (!ops)
44        return -EINVAL;
45    security_fixup_ops(ops);
46    return 0;
47}
48
49static void __init do_security_initcalls(void)
50{
51    initcall_t *call;
52    call = __security_initcall_start;
53    while (call < __security_initcall_end) {
54        (*call) ();
55        call++;
56    }
57}
58
59/**
60 * security_init - initializes the security framework
61 *
62 * This should be called early in the kernel initialization sequence.
63 */
64int __init security_init(void)
65{
66    printk(KERN_INFO "Security Framework initialized\n");
67
68    security_fixup_ops(&default_security_ops);
69    security_ops = &default_security_ops;
70    do_security_initcalls();
71
72    return 0;
73}
74
75void reset_security_ops(void)
76{
77    security_ops = &default_security_ops;
78}
79
80/* Save user chosen LSM */
81static int __init choose_lsm(char *str)
82{
83    strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
84    return 1;
85}
86__setup("security=", choose_lsm);
87
88/**
89 * security_module_enable - Load given security module on boot ?
90 * @ops: a pointer to the struct security_operations that is to be checked.
91 *
92 * Each LSM must pass this method before registering its own operations
93 * to avoid security registration races. This method may also be used
94 * to check if your LSM is currently loaded during kernel initialization.
95 *
96 * Return true if:
97 * -The passed LSM is the one chosen by user at boot time,
98 * -or the passed LSM is configured as the default and the user did not
99 * choose an alternate LSM at boot time.
100 * Otherwise, return false.
101 */
102int __init security_module_enable(struct security_operations *ops)
103{
104    return !strcmp(ops->name, chosen_lsm);
105}
106
107/**
108 * register_security - registers a security framework with the kernel
109 * @ops: a pointer to the struct security_options that is to be registered
110 *
111 * This function allows a security module to register itself with the
112 * kernel security subsystem. Some rudimentary checking is done on the @ops
113 * value passed to this function. You'll need to check first if your LSM
114 * is allowed to register its @ops by calling security_module_enable(@ops).
115 *
116 * If there is already a security module registered with the kernel,
117 * an error will be returned. Otherwise %0 is returned on success.
118 */
119int __init register_security(struct security_operations *ops)
120{
121    if (verify(ops)) {
122        printk(KERN_DEBUG "%s could not verify "
123               "security_operations structure.\n", __func__);
124        return -EINVAL;
125    }
126
127    if (security_ops != &default_security_ops)
128        return -EAGAIN;
129
130    security_ops = ops;
131
132    return 0;
133}
134
135/* Security operations */
136
137int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
138{
139    return security_ops->ptrace_access_check(child, mode);
140}
141
142int security_ptrace_traceme(struct task_struct *parent)
143{
144    return security_ops->ptrace_traceme(parent);
145}
146
147int security_capget(struct task_struct *target,
148             kernel_cap_t *effective,
149             kernel_cap_t *inheritable,
150             kernel_cap_t *permitted)
151{
152    return security_ops->capget(target, effective, inheritable, permitted);
153}
154
155int security_capset(struct cred *new, const struct cred *old,
156            const kernel_cap_t *effective,
157            const kernel_cap_t *inheritable,
158            const kernel_cap_t *permitted)
159{
160    return security_ops->capset(new, old,
161                    effective, inheritable, permitted);
162}
163
164int security_capable(const struct cred *cred, struct user_namespace *ns,
165             int cap)
166{
167    return security_ops->capable(cred, ns, cap, SECURITY_CAP_AUDIT);
168}
169
170int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
171                 int cap)
172{
173    return security_ops->capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
174}
175
176int security_quotactl(int cmds, int type, int id, struct super_block *sb)
177{
178    return security_ops->quotactl(cmds, type, id, sb);
179}
180
181int security_quota_on(struct dentry *dentry)
182{
183    return security_ops->quota_on(dentry);
184}
185
186int security_syslog(int type)
187{
188    return security_ops->syslog(type);
189}
190
191int security_settime(const struct timespec *ts, const struct timezone *tz)
192{
193    return security_ops->settime(ts, tz);
194}
195
196int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
197{
198    return security_ops->vm_enough_memory(mm, pages);
199}
200
201int security_bprm_set_creds(struct linux_binprm *bprm)
202{
203    return security_ops->bprm_set_creds(bprm);
204}
205
206int security_bprm_check(struct linux_binprm *bprm)
207{
208    int ret;
209
210    ret = security_ops->bprm_check_security(bprm);
211    if (ret)
212        return ret;
213    return ima_bprm_check(bprm);
214}
215
216void security_bprm_committing_creds(struct linux_binprm *bprm)
217{
218    security_ops->bprm_committing_creds(bprm);
219}
220
221void security_bprm_committed_creds(struct linux_binprm *bprm)
222{
223    security_ops->bprm_committed_creds(bprm);
224}
225
226int security_bprm_secureexec(struct linux_binprm *bprm)
227{
228    return security_ops->bprm_secureexec(bprm);
229}
230
231int security_sb_alloc(struct super_block *sb)
232{
233    return security_ops->sb_alloc_security(sb);
234}
235
236void security_sb_free(struct super_block *sb)
237{
238    security_ops->sb_free_security(sb);
239}
240
241int security_sb_copy_data(char *orig, char *copy)
242{
243    return security_ops->sb_copy_data(orig, copy);
244}
245EXPORT_SYMBOL(security_sb_copy_data);
246
247int security_sb_remount(struct super_block *sb, void *data)
248{
249    return security_ops->sb_remount(sb, data);
250}
251
252int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
253{
254    return security_ops->sb_kern_mount(sb, flags, data);
255}
256
257int security_sb_show_options(struct seq_file *m, struct super_block *sb)
258{
259    return security_ops->sb_show_options(m, sb);
260}
261
262int security_sb_statfs(struct dentry *dentry)
263{
264    return security_ops->sb_statfs(dentry);
265}
266
267int security_sb_mount(char *dev_name, struct path *path,
268                       char *type, unsigned long flags, void *data)
269{
270    return security_ops->sb_mount(dev_name, path, type, flags, data);
271}
272
273int security_sb_umount(struct vfsmount *mnt, int flags)
274{
275    return security_ops->sb_umount(mnt, flags);
276}
277
278int security_sb_pivotroot(struct path *old_path, struct path *new_path)
279{
280    return security_ops->sb_pivotroot(old_path, new_path);
281}
282
283int security_sb_set_mnt_opts(struct super_block *sb,
284                struct security_mnt_opts *opts)
285{
286    return security_ops->sb_set_mnt_opts(sb, opts);
287}
288EXPORT_SYMBOL(security_sb_set_mnt_opts);
289
290void security_sb_clone_mnt_opts(const struct super_block *oldsb,
291                struct super_block *newsb)
292{
293    security_ops->sb_clone_mnt_opts(oldsb, newsb);
294}
295EXPORT_SYMBOL(security_sb_clone_mnt_opts);
296
297int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
298{
299    return security_ops->sb_parse_opts_str(options, opts);
300}
301EXPORT_SYMBOL(security_sb_parse_opts_str);
302
303int security_inode_alloc(struct inode *inode)
304{
305    inode->i_security = NULL;
306    return security_ops->inode_alloc_security(inode);
307}
308
309void security_inode_free(struct inode *inode)
310{
311    integrity_inode_free(inode);
312    security_ops->inode_free_security(inode);
313}
314
315int security_inode_init_security(struct inode *inode, struct inode *dir,
316                 const struct qstr *qstr,
317                 const initxattrs initxattrs, void *fs_data)
318{
319    struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
320    struct xattr *lsm_xattr, *evm_xattr, *xattr;
321    int ret;
322
323    if (unlikely(IS_PRIVATE(inode)))
324        return 0;
325
326    memset(new_xattrs, 0, sizeof new_xattrs);
327    if (!initxattrs)
328        return security_ops->inode_init_security(inode, dir, qstr,
329                             NULL, NULL, NULL);
330    lsm_xattr = new_xattrs;
331    ret = security_ops->inode_init_security(inode, dir, qstr,
332                        &lsm_xattr->name,
333                        &lsm_xattr->value,
334                        &lsm_xattr->value_len);
335    if (ret)
336        goto out;
337
338    evm_xattr = lsm_xattr + 1;
339    ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
340    if (ret)
341        goto out;
342    ret = initxattrs(inode, new_xattrs, fs_data);
343out:
344    for (xattr = new_xattrs; xattr->name != NULL; xattr++) {
345        kfree(xattr->name);
346        kfree(xattr->value);
347    }
348    return (ret == -EOPNOTSUPP) ? 0 : ret;
349}
350EXPORT_SYMBOL(security_inode_init_security);
351
352int security_old_inode_init_security(struct inode *inode, struct inode *dir,
353                     const struct qstr *qstr, char **name,
354                     void **value, size_t *len)
355{
356    if (unlikely(IS_PRIVATE(inode)))
357        return -EOPNOTSUPP;
358    return security_ops->inode_init_security(inode, dir, qstr, name, value,
359                         len);
360}
361EXPORT_SYMBOL(security_old_inode_init_security);
362
363#ifdef CONFIG_SECURITY_PATH
364int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode,
365            unsigned int dev)
366{
367    if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
368        return 0;
369    return security_ops->path_mknod(dir, dentry, mode, dev);
370}
371EXPORT_SYMBOL(security_path_mknod);
372
373int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode)
374{
375    if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
376        return 0;
377    return security_ops->path_mkdir(dir, dentry, mode);
378}
379EXPORT_SYMBOL(security_path_mkdir);
380
381int security_path_rmdir(struct path *dir, struct dentry *dentry)
382{
383    if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
384        return 0;
385    return security_ops->path_rmdir(dir, dentry);
386}
387
388int security_path_unlink(struct path *dir, struct dentry *dentry)
389{
390    if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
391        return 0;
392    return security_ops->path_unlink(dir, dentry);
393}
394EXPORT_SYMBOL(security_path_unlink);
395
396int security_path_symlink(struct path *dir, struct dentry *dentry,
397              const char *old_name)
398{
399    if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
400        return 0;
401    return security_ops->path_symlink(dir, dentry, old_name);
402}
403
404int security_path_link(struct dentry *old_dentry, struct path *new_dir,
405               struct dentry *new_dentry)
406{
407    if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
408        return 0;
409    return security_ops->path_link(old_dentry, new_dir, new_dentry);
410}
411
412int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
413             struct path *new_dir, struct dentry *new_dentry)
414{
415    if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
416             (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
417        return 0;
418    return security_ops->path_rename(old_dir, old_dentry, new_dir,
419                     new_dentry);
420}
421EXPORT_SYMBOL(security_path_rename);
422
423int security_path_truncate(struct path *path)
424{
425    if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
426        return 0;
427    return security_ops->path_truncate(path);
428}
429
430int security_path_chmod(struct path *path, umode_t mode)
431{
432    if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
433        return 0;
434    return security_ops->path_chmod(path, mode);
435}
436
437int security_path_chown(struct path *path, uid_t uid, gid_t gid)
438{
439    if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
440        return 0;
441    return security_ops->path_chown(path, uid, gid);
442}
443
444int security_path_chroot(struct path *path)
445{
446    return security_ops->path_chroot(path);
447}
448#endif
449
450int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
451{
452    if (unlikely(IS_PRIVATE(dir)))
453        return 0;
454    return security_ops->inode_create(dir, dentry, mode);
455}
456EXPORT_SYMBOL_GPL(security_inode_create);
457
458int security_inode_link(struct dentry *old_dentry, struct inode *dir,
459             struct dentry *new_dentry)
460{
461    if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
462        return 0;
463    return security_ops->inode_link(old_dentry, dir, new_dentry);
464}
465
466int security_inode_unlink(struct inode *dir, struct dentry *dentry)
467{
468    if (unlikely(IS_PRIVATE(dentry->d_inode)))
469        return 0;
470    return security_ops->inode_unlink(dir, dentry);
471}
472
473int security_inode_symlink(struct inode *dir, struct dentry *dentry,
474                const char *old_name)
475{
476    if (unlikely(IS_PRIVATE(dir)))
477        return 0;
478    return security_ops->inode_symlink(dir, dentry, old_name);
479}
480
481int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
482{
483    if (unlikely(IS_PRIVATE(dir)))
484        return 0;
485    return security_ops->inode_mkdir(dir, dentry, mode);
486}
487EXPORT_SYMBOL_GPL(security_inode_mkdir);
488
489int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
490{
491    if (unlikely(IS_PRIVATE(dentry->d_inode)))
492        return 0;
493    return security_ops->inode_rmdir(dir, dentry);
494}
495
496int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
497{
498    if (unlikely(IS_PRIVATE(dir)))
499        return 0;
500    return security_ops->inode_mknod(dir, dentry, mode, dev);
501}
502
503int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
504               struct inode *new_dir, struct dentry *new_dentry)
505{
506        if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
507            (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
508        return 0;
509    return security_ops->inode_rename(old_dir, old_dentry,
510                       new_dir, new_dentry);
511}
512
513int security_inode_readlink(struct dentry *dentry)
514{
515    if (unlikely(IS_PRIVATE(dentry->d_inode)))
516        return 0;
517    return security_ops->inode_readlink(dentry);
518}
519
520int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd)
521{
522    if (unlikely(IS_PRIVATE(dentry->d_inode)))
523        return 0;
524    return security_ops->inode_follow_link(dentry, nd);
525}
526
527int security_inode_permission(struct inode *inode, int mask)
528{
529    if (unlikely(IS_PRIVATE(inode)))
530        return 0;
531    return security_ops->inode_permission(inode, mask);
532}
533
534int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
535{
536    int ret;
537
538    if (unlikely(IS_PRIVATE(dentry->d_inode)))
539        return 0;
540    ret = security_ops->inode_setattr(dentry, attr);
541    if (ret)
542        return ret;
543    return evm_inode_setattr(dentry, attr);
544}
545EXPORT_SYMBOL_GPL(security_inode_setattr);
546
547int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
548{
549    if (unlikely(IS_PRIVATE(dentry->d_inode)))
550        return 0;
551    return security_ops->inode_getattr(mnt, dentry);
552}
553
554int security_inode_setxattr(struct dentry *dentry, const char *name,
555                const void *value, size_t size, int flags)
556{
557    int ret;
558
559    if (unlikely(IS_PRIVATE(dentry->d_inode)))
560        return 0;
561    ret = security_ops->inode_setxattr(dentry, name, value, size, flags);
562    if (ret)
563        return ret;
564    return evm_inode_setxattr(dentry, name, value, size);
565}
566
567void security_inode_post_setxattr(struct dentry *dentry, const char *name,
568                  const void *value, size_t size, int flags)
569{
570    if (unlikely(IS_PRIVATE(dentry->d_inode)))
571        return;
572    security_ops->inode_post_setxattr(dentry, name, value, size, flags);
573    evm_inode_post_setxattr(dentry, name, value, size);
574}
575
576int security_inode_getxattr(struct dentry *dentry, const char *name)
577{
578    if (unlikely(IS_PRIVATE(dentry->d_inode)))
579        return 0;
580    return security_ops->inode_getxattr(dentry, name);
581}
582
583int security_inode_listxattr(struct dentry *dentry)
584{
585    if (unlikely(IS_PRIVATE(dentry->d_inode)))
586        return 0;
587    return security_ops->inode_listxattr(dentry);
588}
589
590int security_inode_removexattr(struct dentry *dentry, const char *name)
591{
592    int ret;
593
594    if (unlikely(IS_PRIVATE(dentry->d_inode)))
595        return 0;
596    ret = security_ops->inode_removexattr(dentry, name);
597    if (ret)
598        return ret;
599    return evm_inode_removexattr(dentry, name);
600}
601
602int security_inode_need_killpriv(struct dentry *dentry)
603{
604    return security_ops->inode_need_killpriv(dentry);
605}
606
607int security_inode_killpriv(struct dentry *dentry)
608{
609    return security_ops->inode_killpriv(dentry);
610}
611
612int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
613{
614    if (unlikely(IS_PRIVATE(inode)))
615        return -EOPNOTSUPP;
616    return security_ops->inode_getsecurity(inode, name, buffer, alloc);
617}
618
619int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
620{
621    if (unlikely(IS_PRIVATE(inode)))
622        return -EOPNOTSUPP;
623    return security_ops->inode_setsecurity(inode, name, value, size, flags);
624}
625
626int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
627{
628    if (unlikely(IS_PRIVATE(inode)))
629        return 0;
630    return security_ops->inode_listsecurity(inode, buffer, buffer_size);
631}
632
633void security_inode_getsecid(const struct inode *inode, u32 *secid)
634{
635    security_ops->inode_getsecid(inode, secid);
636}
637
638int security_file_permission(struct file *file, int mask)
639{
640    int ret;
641
642    ret = security_ops->file_permission(file, mask);
643    if (ret)
644        return ret;
645
646    return fsnotify_perm(file, mask);
647}
648
649int security_file_alloc(struct file *file)
650{
651    return security_ops->file_alloc_security(file);
652}
653
654void security_file_free(struct file *file)
655{
656    security_ops->file_free_security(file);
657}
658
659int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
660{
661    return security_ops->file_ioctl(file, cmd, arg);
662}
663
664static inline unsigned long mmap_prot(struct file *file, unsigned long prot)
665{
666    /*
667     * Does we have PROT_READ and does the application expect
668     * it to imply PROT_EXEC? If not, nothing to talk about...
669     */
670    if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ)
671        return prot;
672    if (!(current->personality & READ_IMPLIES_EXEC))
673        return prot;
674    /*
675     * if that's an anonymous mapping, let it.
676     */
677    if (!file)
678        return prot | PROT_EXEC;
679    /*
680     * ditto if it's not on noexec mount, except that on !MMU we need
681     * BDI_CAP_EXEC_MMAP (== VM_MAYEXEC) in this case
682     */
683    if (!(file->f_path.mnt->mnt_flags & MNT_NOEXEC)) {
684#ifndef CONFIG_MMU
685        unsigned long caps = 0;
686        struct address_space *mapping = file->f_mapping;
687        if (mapping && mapping->backing_dev_info)
688            caps = mapping->backing_dev_info->capabilities;
689        if (!(caps & BDI_CAP_EXEC_MAP))
690            return prot;
691#endif
692        return prot | PROT_EXEC;
693    }
694    /* anything on noexec mount won't get PROT_EXEC */
695    return prot;
696}
697
698int security_mmap_file(struct file *file, unsigned long prot,
699            unsigned long flags)
700{
701    int ret;
702    ret = security_ops->mmap_file(file, prot,
703                    mmap_prot(file, prot), flags);
704    if (ret)
705        return ret;
706    return ima_file_mmap(file, prot);
707}
708
709int security_mmap_addr(unsigned long addr)
710{
711    return security_ops->mmap_addr(addr);
712}
713
714int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
715                unsigned long prot)
716{
717    return security_ops->file_mprotect(vma, reqprot, prot);
718}
719
720int security_file_lock(struct file *file, unsigned int cmd)
721{
722    return security_ops->file_lock(file, cmd);
723}
724
725int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
726{
727    return security_ops->file_fcntl(file, cmd, arg);
728}
729
730int security_file_set_fowner(struct file *file)
731{
732    return security_ops->file_set_fowner(file);
733}
734
735int security_file_send_sigiotask(struct task_struct *tsk,
736                  struct fown_struct *fown, int sig)
737{
738    return security_ops->file_send_sigiotask(tsk, fown, sig);
739}
740
741int security_file_receive(struct file *file)
742{
743    return security_ops->file_receive(file);
744}
745
746int security_file_open(struct file *file, const struct cred *cred)
747{
748    int ret;
749
750    ret = security_ops->file_open(file, cred);
751    if (ret)
752        return ret;
753
754    return fsnotify_perm(file, MAY_OPEN);
755}
756
757int security_task_create(unsigned long clone_flags)
758{
759    return security_ops->task_create(clone_flags);
760}
761
762void security_task_free(struct task_struct *task)
763{
764    security_ops->task_free(task);
765}
766
767int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
768{
769    return security_ops->cred_alloc_blank(cred, gfp);
770}
771
772void security_cred_free(struct cred *cred)
773{
774    security_ops->cred_free(cred);
775}
776
777int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
778{
779    return security_ops->cred_prepare(new, old, gfp);
780}
781
782void security_transfer_creds(struct cred *new, const struct cred *old)
783{
784    security_ops->cred_transfer(new, old);
785}
786
787int security_kernel_act_as(struct cred *new, u32 secid)
788{
789    return security_ops->kernel_act_as(new, secid);
790}
791
792int security_kernel_create_files_as(struct cred *new, struct inode *inode)
793{
794    return security_ops->kernel_create_files_as(new, inode);
795}
796
797int security_kernel_module_request(char *kmod_name)
798{
799    return security_ops->kernel_module_request(kmod_name);
800}
801
802int security_task_fix_setuid(struct cred *new, const struct cred *old,
803                 int flags)
804{
805    return security_ops->task_fix_setuid(new, old, flags);
806}
807
808int security_task_setpgid(struct task_struct *p, pid_t pgid)
809{
810    return security_ops->task_setpgid(p, pgid);
811}
812
813int security_task_getpgid(struct task_struct *p)
814{
815    return security_ops->task_getpgid(p);
816}
817
818int security_task_getsid(struct task_struct *p)
819{
820    return security_ops->task_getsid(p);
821}
822
823void security_task_getsecid(struct task_struct *p, u32 *secid)
824{
825    security_ops->task_getsecid(p, secid);
826}
827EXPORT_SYMBOL(security_task_getsecid);
828
829int security_task_setnice(struct task_struct *p, int nice)
830{
831    return security_ops->task_setnice(p, nice);
832}
833
834int security_task_setioprio(struct task_struct *p, int ioprio)
835{
836    return security_ops->task_setioprio(p, ioprio);
837}
838
839int security_task_getioprio(struct task_struct *p)
840{
841    return security_ops->task_getioprio(p);
842}
843
844int security_task_setrlimit(struct task_struct *p, unsigned int resource,
845        struct rlimit *new_rlim)
846{
847    return security_ops->task_setrlimit(p, resource, new_rlim);
848}
849
850int security_task_setscheduler(struct task_struct *p)
851{
852    return security_ops->task_setscheduler(p);
853}
854
855int security_task_getscheduler(struct task_struct *p)
856{
857    return security_ops->task_getscheduler(p);
858}
859
860int security_task_movememory(struct task_struct *p)
861{
862    return security_ops->task_movememory(p);
863}
864
865int security_task_kill(struct task_struct *p, struct siginfo *info,
866            int sig, u32 secid)
867{
868    return security_ops->task_kill(p, info, sig, secid);
869}
870
871int security_task_wait(struct task_struct *p)
872{
873    return security_ops->task_wait(p);
874}
875
876int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
877             unsigned long arg4, unsigned long arg5)
878{
879    return security_ops->task_prctl(option, arg2, arg3, arg4, arg5);
880}
881
882void security_task_to_inode(struct task_struct *p, struct inode *inode)
883{
884    security_ops->task_to_inode(p, inode);
885}
886
887int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
888{
889    return security_ops->ipc_permission(ipcp, flag);
890}
891
892void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
893{
894    security_ops->ipc_getsecid(ipcp, secid);
895}
896
897int security_msg_msg_alloc(struct msg_msg *msg)
898{
899    return security_ops->msg_msg_alloc_security(msg);
900}
901
902void security_msg_msg_free(struct msg_msg *msg)
903{
904    security_ops->msg_msg_free_security(msg);
905}
906
907int security_msg_queue_alloc(struct msg_queue *msq)
908{
909    return security_ops->msg_queue_alloc_security(msq);
910}
911
912void security_msg_queue_free(struct msg_queue *msq)
913{
914    security_ops->msg_queue_free_security(msq);
915}
916
917int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
918{
919    return security_ops->msg_queue_associate(msq, msqflg);
920}
921
922int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
923{
924    return security_ops->msg_queue_msgctl(msq, cmd);
925}
926
927int security_msg_queue_msgsnd(struct msg_queue *msq,
928                   struct msg_msg *msg, int msqflg)
929{
930    return security_ops->msg_queue_msgsnd(msq, msg, msqflg);
931}
932
933int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
934                   struct task_struct *target, long type, int mode)
935{
936    return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode);
937}
938
939int security_shm_alloc(struct shmid_kernel *shp)
940{
941    return security_ops->shm_alloc_security(shp);
942}
943
944void security_shm_free(struct shmid_kernel *shp)
945{
946    security_ops->shm_free_security(shp);
947}
948
949int security_shm_associate(struct shmid_kernel *shp, int shmflg)
950{
951    return security_ops->shm_associate(shp, shmflg);
952}
953
954int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
955{
956    return security_ops->shm_shmctl(shp, cmd);
957}
958
959int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
960{
961    return security_ops->shm_shmat(shp, shmaddr, shmflg);
962}
963
964int security_sem_alloc(struct sem_array *sma)
965{
966    return security_ops->sem_alloc_security(sma);
967}
968
969void security_sem_free(struct sem_array *sma)
970{
971    security_ops->sem_free_security(sma);
972}
973
974int security_sem_associate(struct sem_array *sma, int semflg)
975{
976    return security_ops->sem_associate(sma, semflg);
977}
978
979int security_sem_semctl(struct sem_array *sma, int cmd)
980{
981    return security_ops->sem_semctl(sma, cmd);
982}
983
984int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
985            unsigned nsops, int alter)
986{
987    return security_ops->sem_semop(sma, sops, nsops, alter);
988}
989
990void security_d_instantiate(struct dentry *dentry, struct inode *inode)
991{
992    if (unlikely(inode && IS_PRIVATE(inode)))
993        return;
994    security_ops->d_instantiate(dentry, inode);
995}
996EXPORT_SYMBOL(security_d_instantiate);
997
998int security_getprocattr(struct task_struct *p, char *name, char **value)
999{
1000    return security_ops->getprocattr(p, name, value);
1001}
1002
1003int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
1004{
1005    return security_ops->setprocattr(p, name, value, size);
1006}
1007
1008int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1009{
1010    return security_ops->netlink_send(sk, skb);
1011}
1012
1013int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1014{
1015    return security_ops->secid_to_secctx(secid, secdata, seclen);
1016}
1017EXPORT_SYMBOL(security_secid_to_secctx);
1018
1019int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
1020{
1021    return security_ops->secctx_to_secid(secdata, seclen, secid);
1022}
1023EXPORT_SYMBOL(security_secctx_to_secid);
1024
1025void security_release_secctx(char *secdata, u32 seclen)
1026{
1027    security_ops->release_secctx(secdata, seclen);
1028}
1029EXPORT_SYMBOL(security_release_secctx);
1030
1031int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1032{
1033    return security_ops->inode_notifysecctx(inode, ctx, ctxlen);
1034}
1035EXPORT_SYMBOL(security_inode_notifysecctx);
1036
1037int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1038{
1039    return security_ops->inode_setsecctx(dentry, ctx, ctxlen);
1040}
1041EXPORT_SYMBOL(security_inode_setsecctx);
1042
1043int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1044{
1045    return security_ops->inode_getsecctx(inode, ctx, ctxlen);
1046}
1047EXPORT_SYMBOL(security_inode_getsecctx);
1048
1049#ifdef CONFIG_SECURITY_NETWORK
1050
1051int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1052{
1053    return security_ops->unix_stream_connect(sock, other, newsk);
1054}
1055EXPORT_SYMBOL(security_unix_stream_connect);
1056
1057int security_unix_may_send(struct socket *sock, struct socket *other)
1058{
1059    return security_ops->unix_may_send(sock, other);
1060}
1061EXPORT_SYMBOL(security_unix_may_send);
1062
1063int security_socket_create(int family, int type, int protocol, int kern)
1064{
1065    return security_ops->socket_create(family, type, protocol, kern);
1066}
1067
1068int security_socket_post_create(struct socket *sock, int family,
1069                int type, int protocol, int kern)
1070{
1071    return security_ops->socket_post_create(sock, family, type,
1072                        protocol, kern);
1073}
1074
1075int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1076{
1077    return security_ops->socket_bind(sock, address, addrlen);
1078}
1079
1080int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1081{
1082    return security_ops->socket_connect(sock, address, addrlen);
1083}
1084
1085int security_socket_listen(struct socket *sock, int backlog)
1086{
1087    return security_ops->socket_listen(sock, backlog);
1088}
1089
1090int security_socket_accept(struct socket *sock, struct socket *newsock)
1091{
1092    return security_ops->socket_accept(sock, newsock);
1093}
1094
1095int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1096{
1097    return security_ops->socket_sendmsg(sock, msg, size);
1098}
1099
1100int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1101                int size, int flags)
1102{
1103    return security_ops->socket_recvmsg(sock, msg, size, flags);
1104}
1105
1106int security_socket_getsockname(struct socket *sock)
1107{
1108    return security_ops->socket_getsockname(sock);
1109}
1110
1111int security_socket_getpeername(struct socket *sock)
1112{
1113    return security_ops->socket_getpeername(sock);
1114}
1115
1116int security_socket_getsockopt(struct socket *sock, int level, int optname)
1117{
1118    return security_ops->socket_getsockopt(sock, level, optname);
1119}
1120
1121int security_socket_setsockopt(struct socket *sock, int level, int optname)
1122{
1123    return security_ops->socket_setsockopt(sock, level, optname);
1124}
1125
1126int security_socket_shutdown(struct socket *sock, int how)
1127{
1128    return security_ops->socket_shutdown(sock, how);
1129}
1130
1131int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1132{
1133    return security_ops->socket_sock_rcv_skb(sk, skb);
1134}
1135EXPORT_SYMBOL(security_sock_rcv_skb);
1136
1137int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1138                      int __user *optlen, unsigned len)
1139{
1140    return security_ops->socket_getpeersec_stream(sock, optval, optlen, len);
1141}
1142
1143int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1144{
1145    return security_ops->socket_getpeersec_dgram(sock, skb, secid);
1146}
1147EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1148
1149int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1150{
1151    return security_ops->sk_alloc_security(sk, family, priority);
1152}
1153
1154void security_sk_free(struct sock *sk)
1155{
1156    security_ops->sk_free_security(sk);
1157}
1158
1159void security_sk_clone(const struct sock *sk, struct sock *newsk)
1160{
1161    security_ops->sk_clone_security(sk, newsk);
1162}
1163EXPORT_SYMBOL(security_sk_clone);
1164
1165void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1166{
1167    security_ops->sk_getsecid(sk, &fl->flowi_secid);
1168}
1169EXPORT_SYMBOL(security_sk_classify_flow);
1170
1171void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1172{
1173    security_ops->req_classify_flow(req, fl);
1174}
1175EXPORT_SYMBOL(security_req_classify_flow);
1176
1177void security_sock_graft(struct sock *sk, struct socket *parent)
1178{
1179    security_ops->sock_graft(sk, parent);
1180}
1181EXPORT_SYMBOL(security_sock_graft);
1182
1183int security_inet_conn_request(struct sock *sk,
1184            struct sk_buff *skb, struct request_sock *req)
1185{
1186    return security_ops->inet_conn_request(sk, skb, req);
1187}
1188EXPORT_SYMBOL(security_inet_conn_request);
1189
1190void security_inet_csk_clone(struct sock *newsk,
1191            const struct request_sock *req)
1192{
1193    security_ops->inet_csk_clone(newsk, req);
1194}
1195
1196void security_inet_conn_established(struct sock *sk,
1197            struct sk_buff *skb)
1198{
1199    security_ops->inet_conn_established(sk, skb);
1200}
1201
1202int security_secmark_relabel_packet(u32 secid)
1203{
1204    return security_ops->secmark_relabel_packet(secid);
1205}
1206EXPORT_SYMBOL(security_secmark_relabel_packet);
1207
1208void security_secmark_refcount_inc(void)
1209{
1210    security_ops->secmark_refcount_inc();
1211}
1212EXPORT_SYMBOL(security_secmark_refcount_inc);
1213
1214void security_secmark_refcount_dec(void)
1215{
1216    security_ops->secmark_refcount_dec();
1217}
1218EXPORT_SYMBOL(security_secmark_refcount_dec);
1219
1220int security_tun_dev_create(void)
1221{
1222    return security_ops->tun_dev_create();
1223}
1224EXPORT_SYMBOL(security_tun_dev_create);
1225
1226void security_tun_dev_post_create(struct sock *sk)
1227{
1228    return security_ops->tun_dev_post_create(sk);
1229}
1230EXPORT_SYMBOL(security_tun_dev_post_create);
1231
1232int security_tun_dev_attach(struct sock *sk)
1233{
1234    return security_ops->tun_dev_attach(sk);
1235}
1236EXPORT_SYMBOL(security_tun_dev_attach);
1237
1238#endif /* CONFIG_SECURITY_NETWORK */
1239
1240#ifdef CONFIG_SECURITY_NETWORK_XFRM
1241
1242int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
1243{
1244    return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx);
1245}
1246EXPORT_SYMBOL(security_xfrm_policy_alloc);
1247
1248int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1249                  struct xfrm_sec_ctx **new_ctxp)
1250{
1251    return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp);
1252}
1253
1254void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1255{
1256    security_ops->xfrm_policy_free_security(ctx);
1257}
1258EXPORT_SYMBOL(security_xfrm_policy_free);
1259
1260int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1261{
1262    return security_ops->xfrm_policy_delete_security(ctx);
1263}
1264
1265int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx)
1266{
1267    return security_ops->xfrm_state_alloc_security(x, sec_ctx, 0);
1268}
1269EXPORT_SYMBOL(security_xfrm_state_alloc);
1270
1271int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1272                      struct xfrm_sec_ctx *polsec, u32 secid)
1273{
1274    if (!polsec)
1275        return 0;
1276    /*
1277     * We want the context to be taken from secid which is usually
1278     * from the sock.
1279     */
1280    return security_ops->xfrm_state_alloc_security(x, NULL, secid);
1281}
1282
1283int security_xfrm_state_delete(struct xfrm_state *x)
1284{
1285    return security_ops->xfrm_state_delete_security(x);
1286}
1287EXPORT_SYMBOL(security_xfrm_state_delete);
1288
1289void security_xfrm_state_free(struct xfrm_state *x)
1290{
1291    security_ops->xfrm_state_free_security(x);
1292}
1293
1294int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1295{
1296    return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir);
1297}
1298
1299int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1300                       struct xfrm_policy *xp,
1301                       const struct flowi *fl)
1302{
1303    return security_ops->xfrm_state_pol_flow_match(x, xp, fl);
1304}
1305
1306int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1307{
1308    return security_ops->xfrm_decode_session(skb, secid, 1);
1309}
1310
1311void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1312{
1313    int rc = security_ops->xfrm_decode_session(skb, &fl->flowi_secid, 0);
1314
1315    BUG_ON(rc);
1316}
1317EXPORT_SYMBOL(security_skb_classify_flow);
1318
1319#endif /* CONFIG_SECURITY_NETWORK_XFRM */
1320
1321#ifdef CONFIG_KEYS
1322
1323int security_key_alloc(struct key *key, const struct cred *cred,
1324               unsigned long flags)
1325{
1326    return security_ops->key_alloc(key, cred, flags);
1327}
1328
1329void security_key_free(struct key *key)
1330{
1331    security_ops->key_free(key);
1332}
1333
1334int security_key_permission(key_ref_t key_ref,
1335                const struct cred *cred, key_perm_t perm)
1336{
1337    return security_ops->key_permission(key_ref, cred, perm);
1338}
1339
1340int security_key_getsecurity(struct key *key, char **_buffer)
1341{
1342    return security_ops->key_getsecurity(key, _buffer);
1343}
1344
1345#endif /* CONFIG_KEYS */
1346
1347#ifdef CONFIG_AUDIT
1348
1349int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1350{
1351    return security_ops->audit_rule_init(field, op, rulestr, lsmrule);
1352}
1353
1354int security_audit_rule_known(struct audit_krule *krule)
1355{
1356    return security_ops->audit_rule_known(krule);
1357}
1358
1359void security_audit_rule_free(void *lsmrule)
1360{
1361    security_ops->audit_rule_free(lsmrule);
1362}
1363
1364int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1365                  struct audit_context *actx)
1366{
1367    return security_ops->audit_rule_match(secid, field, op, lsmrule, actx);
1368}
1369
1370#endif /* CONFIG_AUDIT */
1371

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