| 1 | /* |
| 2 | * JFFS2 -- Journalling Flash File System, Version 2. |
| 3 | * |
| 4 | * Copyright © 2006 NEC Corporation |
| 5 | * |
| 6 | * Created by KaiGai Kohei <kaigai@ak.jp.nec.com> |
| 7 | * |
| 8 | * For licensing information, see the file 'LICENCE' in this directory. |
| 9 | * |
| 10 | */ |
| 11 | |
| 12 | #include <linux/kernel.h> |
| 13 | #include <linux/fs.h> |
| 14 | #include <linux/jffs2.h> |
| 15 | #include <linux/xattr.h> |
| 16 | #include <linux/mtd/mtd.h> |
| 17 | #include "nodelist.h" |
| 18 | |
| 19 | static int jffs2_trusted_getxattr(struct dentry *dentry, const char *name, |
| 20 | void *buffer, size_t size, int type) |
| 21 | { |
| 22 | if (!strcmp(name, "")) |
| 23 | return -EINVAL; |
| 24 | return do_jffs2_getxattr(dentry->d_inode, JFFS2_XPREFIX_TRUSTED, |
| 25 | name, buffer, size); |
| 26 | } |
| 27 | |
| 28 | static int jffs2_trusted_setxattr(struct dentry *dentry, const char *name, |
| 29 | const void *buffer, size_t size, int flags, int type) |
| 30 | { |
| 31 | if (!strcmp(name, "")) |
| 32 | return -EINVAL; |
| 33 | return do_jffs2_setxattr(dentry->d_inode, JFFS2_XPREFIX_TRUSTED, |
| 34 | name, buffer, size, flags); |
| 35 | } |
| 36 | |
| 37 | static size_t jffs2_trusted_listxattr(struct dentry *dentry, char *list, |
| 38 | size_t list_size, const char *name, size_t name_len, int type) |
| 39 | { |
| 40 | size_t retlen = XATTR_TRUSTED_PREFIX_LEN + name_len + 1; |
| 41 | |
| 42 | if (list && retlen<=list_size) { |
| 43 | strcpy(list, XATTR_TRUSTED_PREFIX); |
| 44 | strcpy(list + XATTR_TRUSTED_PREFIX_LEN, name); |
| 45 | } |
| 46 | |
| 47 | return retlen; |
| 48 | } |
| 49 | |
| 50 | const struct xattr_handler jffs2_trusted_xattr_handler = { |
| 51 | .prefix = XATTR_TRUSTED_PREFIX, |
| 52 | .list = jffs2_trusted_listxattr, |
| 53 | .set = jffs2_trusted_setxattr, |
| 54 | .get = jffs2_trusted_getxattr |
| 55 | }; |