1 /*-------------------------------------------------------------------------* 2 * File: fs/jffs2/xattr_user.c 3 * XATTR support on JFFS2 FileSystem 4 * 5 * Implemented by KaiGai Kohei <kaigai@ak.jp.nec.com> 6 * Copyright (C) 2006 NEC Corporation 7 * 8 * For licensing information, see the file 'LICENCE' in the jffs2 directory. 9 *-------------------------------------------------------------------------*/ 10 #include <linux/kernel.h> 11 #include <linux/fs.h> 12 #include <linux/jffs2.h> 13 #include <linux/xattr.h> 14 #include <linux/mtd/mtd.h> 15 #include "nodelist.h" 16 17 static int jffs2_user_getxattr(struct inode *inode, const char *name, 18 void *buffer, size_t size) 19 { 20 if (!strcmp(name, "")) 21 return -EINVAL; 22 return do_jffs2_getxattr(inode, JFFS2_XPREFIX_USER, name, buffer, size); 23 } 24 25 static int jffs2_user_setxattr(struct inode *inode, const char *name, const void *buffer, 26 size_t size, int flags) 27 { 28 if (!strcmp(name, "")) 29 return -EINVAL; 30 return do_jffs2_setxattr(inode, JFFS2_XPREFIX_USER, name, buffer, size, flags); 31 } 32 33 static size_t jffs2_user_listxattr(struct inode *inode, char *list, size_t list_size, 34 const char *name, size_t name_len) 35 { 36 size_t retlen = XATTR_USER_PREFIX_LEN + name_len + 1; 37 38 if (list && retlen <= list_size) { 39 strcpy(list, XATTR_USER_PREFIX); 40 strcpy(list + XATTR_USER_PREFIX_LEN, name); 41 } 42 43 return retlen; 44 } 45 46 struct xattr_handler jffs2_user_xattr_handler = { 47 .prefix = XATTR_USER_PREFIX, 48 .list = jffs2_user_listxattr, 49 .set = jffs2_user_setxattr, 50 .get = jffs2_user_getxattr 51 }; 52