Release 4.12 include/linux/ext2_fs.h

/*
 *  linux/include/linux/ext2_fs.h
 *
 * Copyright (C) 1992, 1993, 1994, 1995
 * Remy Card (card@masi.ibp.fr)
 * Laboratoire MASI - Institut Blaise Pascal
 * Universite Pierre et Marie Curie (Paris VI)
 *
 *  from
 *
 *  linux/include/linux/minix_fs.h
 *
 *  Copyright (C) 1991, 1992  Linus Torvalds
 */

#ifndef _LINUX_EXT2_FS_H

#define _LINUX_EXT2_FS_H

#include <linux/types.h>
#include <linux/magic.h>


#define EXT2_NAME_LEN 255

/*
 * Maximal count of links to a file
 */

#define EXT2_LINK_MAX		32000


#define EXT2_SB_MAGIC_OFFSET	0x38

#define EXT2_SB_BLOCKS_OFFSET	0x04

#define EXT2_SB_BSIZE_OFFSET	0x18



static inline u64 ext2_image_size(void *ext2_sb)
{
	__u8 *p = ext2_sb;
	if (*(__le16 *)(p + EXT2_SB_MAGIC_OFFSET) != cpu_to_le16(EXT2_SUPER_MAGIC))
		return 0;
	return (u64)le32_to_cpup((__le32 *)(p + EXT2_SB_BLOCKS_OFFSET)) <<
		le32_to_cpup((__le32 *)(p + EXT2_SB_BSIZE_OFFSET));
}

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#endif	/* _LINUX_EXT2_FS_H */
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Al Viro
83
79.05%
2
22.22%
Linus Torvalds (pre-git)
17
16.19%
5
55.56%
Jeff Garzik
3
2.86%
1
11.11%
Jan Kara
2
1.90%
1
11.11%
Total
105
100.00%
9
100.00%
Directory: include/linux

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