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Add cleaner ext2 filesystem implementation

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Signed-off-by: Laurent Vivier <Laurent@vivier.eu>



git-svn-id: svn://coreboot.org/openbios/trunk/openbios-devel@627 f158a5a8-5612-0410-a976-696ce0be7e32
This commit is contained in:
Laurent Vivier
2009-11-22 09:47:08 +00:00
parent d2cc5db789
commit 26c129730b
21 changed files with 1381 additions and 2 deletions
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53
fs/ext2/ext2_utils.h Normal file
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/*
*
* (c) 2008-2009 Laurent Vivier <Laurent@lvivier.info>
*
* This file has been copied from EMILE, http://emile.sf.net
*
*/
#ifndef __EXT2_UTILS_H__
#define __EXT2_UTILS_H__
#include "ext2_fs.h"
#include "ext2.h"
/* from linux/stat.h */
#define S_IFMT 00170000
#define S_IFSOCK 0140000
#define S_IFLNK 0120000
#define S_IFREG 0100000
#define S_IFBLK 0060000
#define S_IFDIR 0040000
#define S_IFCHR 0020000
#define S_IFIFO 0010000
#define S_ISUID 0004000
#define S_ISGID 0002000
#define S_ISVTX 0001000
#define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
#define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
#define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
#define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
#define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
/* utilities */
extern void ext2_get_super(int fd, struct ext2_super_block *super);
extern void ext2_read_block(ext2_VOLUME* volume, unsigned int fsblock);
extern void ext2_get_group_desc(ext2_VOLUME* volume,
int group_id, struct ext2_group_desc *gdp);
extern int ext2_get_inode(ext2_VOLUME* volume,
unsigned int ino, struct ext2_inode *inode);
extern unsigned int ext2_get_block_addr(ext2_VOLUME* volume,
struct ext2_inode *inode,
unsigned int logical);
extern int ext2_read_data(ext2_VOLUME* volume, struct ext2_inode *inode,
off_t offset, char *buffer, size_t length);
extern off_t ext2_dir_entry(ext2_VOLUME *volume, struct ext2_inode *inode,
off_t offset, struct ext2_dir_entry_2 *entry);
extern unsigned int ext2_seek_name(ext2_VOLUME *volume, const char *name);
#endif /* __EXT2_UTILS_H__ */