mirror of
https://github.com/torvalds/linux.git
synced 2024-12-27 13:22:23 +00:00
652ecc20d1
Unify each file header part with any jffs2 file. [7/10] jffs2-xattr-v5.1-07-unify_file_header.patch Signed-off-by: KaiGai Kohei <kaigai@ak.jp.nec.com>
83 lines
2.0 KiB
C
83 lines
2.0 KiB
C
/*
|
|
* JFFS2 -- Journalling Flash File System, Version 2.
|
|
*
|
|
* Copyright (C) 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 Attachment -------------- */
|
|
int jffs2_init_security(struct inode *inode, struct inode *dir)
|
|
{
|
|
int rc;
|
|
size_t len;
|
|
void *value;
|
|
char *name;
|
|
|
|
rc = security_inode_init_security(inode, dir, &name, &value, &len);
|
|
if (rc) {
|
|
if (rc == -EOPNOTSUPP)
|
|
return 0;
|
|
return rc;
|
|
}
|
|
rc = do_jffs2_setxattr(inode, JFFS2_XPREFIX_SECURITY, name, value, len, 0);
|
|
|
|
kfree(name);
|
|
kfree(value);
|
|
return rc;
|
|
}
|
|
|
|
/* ---- XATTR Handler for "security.*" ----------------- */
|
|
static int jffs2_security_getxattr(struct inode *inode, const char *name,
|
|
void *buffer, size_t size)
|
|
{
|
|
if (!strcmp(name, ""))
|
|
return -EINVAL;
|
|
|
|
return do_jffs2_getxattr(inode, JFFS2_XPREFIX_SECURITY, name, buffer, size);
|
|
}
|
|
|
|
static int jffs2_security_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_SECURITY, name, buffer, size, flags);
|
|
}
|
|
|
|
static size_t jffs2_security_listxattr(struct inode *inode, 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;
|
|
}
|
|
|
|
struct xattr_handler jffs2_security_xattr_handler = {
|
|
.prefix = XATTR_SECURITY_PREFIX,
|
|
.list = jffs2_security_listxattr,
|
|
.set = jffs2_security_setxattr,
|
|
.get = jffs2_security_getxattr
|
|
};
|