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/*
* 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/slab.h>
#include <linux/fs.h>
#include <linux/time.h>
#include <linux/pagemap.h>
#include <linux/highmem.h>
#include <linux/crc32.h>
#include <linux/jffs2.h>
#include <linux/xattr.h>
#include <linux/mtd/mtd.h>
#include <linux/security.h>
#include "nodelist.h"
/* ---- Initial Security Label(s) Attachment callback --- */
static int jffs2_initxattrs(struct inode *inode,
const struct xattr *xattr_array, void *fs_info)
{
const struct xattr *xattr;
int err = 0;
for (xattr = xattr_array; xattr->name != NULL; xattr++) {
err = do_jffs2_setxattr(inode, JFFS2_XPREFIX_SECURITY,
xattr->name, xattr->value,
xattr->value_len, 0);
if (err < 0)
break;
}
return err;
}
/* ---- Initial Security Label(s) Attachment ----------- */
int jffs2_init_security(struct inode *inode, struct inode *dir,
const struct qstr *qstr)
{
return security_inode_init_security(inode, dir, qstr,
&jffs2_initxattrs, NULL);
}
/* ---- XATTR Handler for "security.*" ----------------- */
static int jffs2_security_getxattr(const struct xattr_handler *handler,
struct dentry *dentry, const char *name,
void *buffer, size_t size)
{
if (!strcmp(name, ""))
return -EINVAL;
return do_jffs2_getxattr(d_inode(dentry), JFFS2_XPREFIX_SECURITY,
name, buffer, size);
}
static int jffs2_security_setxattr(const struct xattr_handler *handler,
struct dentry *dentry, const char *name,
const void *buffer, size_t size, int flags)
{
if (!strcmp(name, ""))
return -EINVAL;
return do_jffs2_setxattr(d_inode(dentry), JFFS2_XPREFIX_SECURITY,
name, buffer, size, flags);
}
static size_t jffs2_security_listxattr(const struct xattr_handler *handler,
struct dentry *dentry, char *list,
size_t list_size, const char *name,
size_t name_len)
{
size_t retlen = XATTR_SECURITY_PREFIX_LEN + name_len + 1;
if (list && retlen <= list_size) {
strcpy(list, XATTR_SECURITY_PREFIX);
strcpy(list + XATTR_SECURITY_PREFIX_LEN, name);
}
return retlen;
}
const struct xattr_handler jffs2_security_xattr_handler = {
.prefix = XATTR_SECURITY_PREFIX,
.list = jffs2_security_listxattr,
.set = jffs2_security_setxattr,
.get = jffs2_security_getxattr
};
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