root/fs/jffs2/xattr_user.c

DEFINITIONS

1. jffs2_user_getxattr
2. jffs2_user_setxattr
3. jffs2_user_listxattr

/*
 * JFFS2 -- Journalling Flash File System, Version 2.
 *
 * Copyright © 2006  NEC Corporation
 *
 * Created by KaiGai Kohei <kaigai@ak.jp.nec.com>
 *
 * For licensing information, see the file 'LICENCE' in this directory.
 *
 */

#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/jffs2.h>
#include <linux/xattr.h>
#include <linux/mtd/mtd.h>
#include "nodelist.h"

static int jffs2_user_getxattr(struct inode *inode, const char *name,
                               void *buffer, size_t size)
{
        if (!strcmp(name, ""))
                return -EINVAL;
        return do_jffs2_getxattr(inode, JFFS2_XPREFIX_USER, name, buffer, size);
}

static int jffs2_user_setxattr(struct inode *inode, const char *name, const void *buffer,
                               size_t size, int flags)
{
        if (!strcmp(name, ""))
                return -EINVAL;
        return do_jffs2_setxattr(inode, JFFS2_XPREFIX_USER, name, buffer, size, flags);
}

static size_t jffs2_user_listxattr(struct inode *inode, char *list, size_t list_size,
                                   const char *name, size_t name_len)
{
        size_t retlen = XATTR_USER_PREFIX_LEN + name_len + 1;

        if (list && retlen <= list_size) {
                strcpy(list, XATTR_USER_PREFIX);
                strcpy(list + XATTR_USER_PREFIX_LEN, name);
        }

        return retlen;
}

struct xattr_handler jffs2_user_xattr_handler = {
        .prefix = XATTR_USER_PREFIX,
        .list = jffs2_user_listxattr,
        .set = jffs2_user_setxattr,
        .get = jffs2_user_getxattr
};