?? rom_fs.h
字號:
/*
This is a romfs file system driver for Windows NT/2000/XP.
Copyright (C) 1999, 2000, 2001 Bo Brant閚.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _ROM_FS_
#define _ROM_FS_
#define SECTOR_SIZE 512
#define BLOCK_SIZE PAGE_SIZE
#define ROMFS_MAGIC "-rom1fs-"
#define ROMFS_MAGIC_OFFSET 0
#define SIZEOF_ROMFS_INODE(x) \
((sizeof(struct romfs_inode) + strnlen(x->name, ROMFS_MAXFN) + ROMFH_PAD) \
& ROMFH_MASK)
//
// Types used by Linux
//
#include "ltypes.h"
//
// Use 1 byte packing of on-disk structures
//
#include <pshpack1.h>
//
// The following is a subset of linux/include/linux/romfs_fs.h from
// version 2.2.14
//
/* The basic structures of the romfs filesystem */
#define ROMBSIZE BLOCK_SIZE
#define ROMFS_MAXFN 128
/* On-disk "super block" */
struct romfs_super_block {
__u32 word0;
__u32 word1;
__u32 size;
__u32 checksum;
char name[0]; /* volume name */
};
/* On disk inode */
struct romfs_inode {
__u32 next; /* low 4 bits see ROMFH_ */
__u32 spec;
__u32 size;
__u32 checksum;
char name[0];
};
#define ROMFH_TYPE 7
#define ROMFH_HRD 0
#define ROMFH_DIR 1
#define ROMFH_REG 2
#define ROMFH_SYM 3
#define ROMFH_BLK 4
#define ROMFH_CHR 5
#define ROMFH_SCK 6
#define ROMFH_FIF 7
#define ROMFH_EXEC 8
/* Alignment */
#define ROMFH_SIZE 16
#define ROMFH_PAD (ROMFH_SIZE-1)
#define ROMFH_MASK (~ROMFH_PAD)
//
// End of subset of linux/include/linux/romfs_fs.h
//
//
// Use default packing of structures
//
#include <poppack.h>
#endif
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