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linux-next/include/linux/ext2_fs.h

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Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* 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>
Move several *_SUPER_MAGIC symbols to include/linux/magic.h. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-24 23:13:19 +08:00
#include <linux/magic.h>
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
migrate ext2_fs.h guts to fs/ext2/ext2.h Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-24 04:45:51 +08:00
#define EXT2_NAME_LEN 255
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* Maximal count of links to a file
*/
#define EXT2_LINK_MAX 32000
new helper: ext2_image_size() ... implemented that way since the next commit will leave it almost alone in ext2_fs.h - most of the file (including struct ext2_super_block) is going to move to fs/ext2/ext2.h. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-24 04:36:45 +08:00
#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));
}
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
#endif /* _LINUX_EXT2_FS_H */
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