Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target...
[linux-btrfs-devel.git] / fs / jffs2 / security.c
blob0f20208df60278c9f63f6c14c7b626cfd632ebf2
1 /*
2 * JFFS2 -- Journalling Flash File System, Version 2.
4 * Copyright © 2006 NEC Corporation
6 * Created by KaiGai Kohei <kaigai@ak.jp.nec.com>
8 * For licensing information, see the file 'LICENCE' in this directory.
12 #include <linux/kernel.h>
13 #include <linux/slab.h>
14 #include <linux/fs.h>
15 #include <linux/time.h>
16 #include <linux/pagemap.h>
17 #include <linux/highmem.h>
18 #include <linux/crc32.h>
19 #include <linux/jffs2.h>
20 #include <linux/xattr.h>
21 #include <linux/mtd/mtd.h>
22 #include <linux/security.h>
23 #include "nodelist.h"
25 /* ---- Initial Security Label(s) Attachment callback --- */
26 int jffs2_initxattrs(struct inode *inode, const struct xattr *xattr_array,
27 void *fs_info)
29 const struct xattr *xattr;
30 int err = 0;
32 for (xattr = xattr_array; xattr->name != NULL; xattr++) {
33 err = do_jffs2_setxattr(inode, JFFS2_XPREFIX_SECURITY,
34 xattr->name, xattr->value,
35 xattr->value_len, 0);
36 if (err < 0)
37 break;
39 return err;
42 /* ---- Initial Security Label(s) Attachment ----------- */
43 int jffs2_init_security(struct inode *inode, struct inode *dir,
44 const struct qstr *qstr)
46 return security_inode_init_security(inode, dir, qstr,
47 &jffs2_initxattrs, NULL);
50 /* ---- XATTR Handler for "security.*" ----------------- */
51 static int jffs2_security_getxattr(struct dentry *dentry, const char *name,
52 void *buffer, size_t size, int type)
54 if (!strcmp(name, ""))
55 return -EINVAL;
57 return do_jffs2_getxattr(dentry->d_inode, JFFS2_XPREFIX_SECURITY,
58 name, buffer, size);
61 static int jffs2_security_setxattr(struct dentry *dentry, const char *name,
62 const void *buffer, size_t size, int flags, int type)
64 if (!strcmp(name, ""))
65 return -EINVAL;
67 return do_jffs2_setxattr(dentry->d_inode, JFFS2_XPREFIX_SECURITY,
68 name, buffer, size, flags);
71 static size_t jffs2_security_listxattr(struct dentry *dentry, char *list,
72 size_t list_size, const char *name, size_t name_len, int type)
74 size_t retlen = XATTR_SECURITY_PREFIX_LEN + name_len + 1;
76 if (list && retlen <= list_size) {
77 strcpy(list, XATTR_SECURITY_PREFIX);
78 strcpy(list + XATTR_SECURITY_PREFIX_LEN, name);
81 return retlen;
84 const struct xattr_handler jffs2_security_xattr_handler = {
85 .prefix = XATTR_SECURITY_PREFIX,
86 .list = jffs2_security_listxattr,
87 .set = jffs2_security_setxattr,
88 .get = jffs2_security_getxattr