1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * inode.c
 4 *
 5 * Copyright (C) 2001 Will Dyson <will_dyson@pobox.com>
 6 */
 7
 8#include <linux/fs.h>
 9
10#include "befs.h"
11#include "inode.h"
12
13/*
14 * Validates the correctness of the befs inode
15 * Returns BEFS_OK if the inode should be used, otherwise
16 * returns BEFS_BAD_INODE
17 */
18int
19befs_check_inode(struct super_block *sb, befs_inode *raw_inode,
20		 befs_blocknr_t inode)
21{
22	u32 magic1 = fs32_to_cpu(sb, raw_inode->magic1);
23	befs_inode_addr ino_num = fsrun_to_cpu(sb, raw_inode->inode_num);
24	u32 flags = fs32_to_cpu(sb, raw_inode->flags);
25
26	/* check magic header. */
27	if (magic1 != BEFS_INODE_MAGIC1) {
28		befs_error(sb,
29			   "Inode has a bad magic header - inode = %lu",
30			   (unsigned long)inode);
31		return BEFS_BAD_INODE;
32	}
33
34	/*
35	 * Sanity check2: inodes store their own block address. Check it.
36	 */
37	if (inode != iaddr2blockno(sb, &ino_num)) {
38		befs_error(sb, "inode blocknr field disagrees with vfs "
39			   "VFS: %lu, Inode %lu", (unsigned long)
40			   inode, (unsigned long)iaddr2blockno(sb, &ino_num));
41		return BEFS_BAD_INODE;
42	}
43
44	/*
45	 * check flag
46	 */
47
48	if (!(flags & BEFS_INODE_IN_USE)) {
49		befs_error(sb, "inode is not used - inode = %lu",
50			   (unsigned long)inode);
51		return BEFS_BAD_INODE;
52	}
53
54	return BEFS_OK;
55}

 1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * inode.c
 4 *
 5 * Copyright (C) 2001 Will Dyson <will_dyson@pobox.com>
 6 */
 7
 8#include <linux/fs.h>
 9
10#include "befs.h"
11#include "inode.h"
12
13/*
14 * Validates the correctness of the befs inode
15 * Returns BEFS_OK if the inode should be used, otherwise
16 * returns BEFS_BAD_INODE
17 */
18int
19befs_check_inode(struct super_block *sb, befs_inode *raw_inode,
20		 befs_blocknr_t inode)
21{
22	u32 magic1 = fs32_to_cpu(sb, raw_inode->magic1);
23	befs_inode_addr ino_num = fsrun_to_cpu(sb, raw_inode->inode_num);
24	u32 flags = fs32_to_cpu(sb, raw_inode->flags);
25
26	/* check magic header. */
27	if (magic1 != BEFS_INODE_MAGIC1) {
28		befs_error(sb,
29			   "Inode has a bad magic header - inode = %lu",
30			   (unsigned long)inode);
31		return BEFS_BAD_INODE;
32	}
33
34	/*
35	 * Sanity check2: inodes store their own block address. Check it.
36	 */
37	if (inode != iaddr2blockno(sb, &ino_num)) {
38		befs_error(sb, "inode blocknr field disagrees with vfs "
39			   "VFS: %lu, Inode %lu", (unsigned long)
40			   inode, (unsigned long)iaddr2blockno(sb, &ino_num));
41		return BEFS_BAD_INODE;
42	}
43
44	/*
45	 * check flag
46	 */
47
48	if (!(flags & BEFS_INODE_IN_USE)) {
49		befs_error(sb, "inode is not used - inode = %lu",
50			   (unsigned long)inode);
51		return BEFS_BAD_INODE;
52	}
53
54	return BEFS_OK;
55}