mirror of https://github.com/dzavalishin/oskit/
108 lines
2.9 KiB
C
Executable File
108 lines
2.9 KiB
C
Executable File
/*
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* minix_fs.h
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* stolen (and slightly extended by csb) from the Linux distribution
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* Copyright (C) 1994 Linus Torvalds
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef _LINUX_MINIX_FS_H
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#define _LINUX_MINIX_FS_H
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/*
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* The minix filesystem constants/structures
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*/
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/*
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* Thanks to Kees J Bot for sending me the definitions of the new
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* minix filesystem (aka V2) with bigger inodes and 32-bit block
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* pointers. It's not actually implemented yet, but I'll look into
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* it.
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*/
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#define MINIX_ROOT_INO 1
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/* Not the same as the bogus LINK_MAX in <linux/limits.h>. Oh well. */
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#define MINIX_LINK_MAX 250
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#define MINIX_I_MAP_SLOTS 8
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#define MINIX_Z_MAP_SLOTS 8
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#define MINIX_SUPER_MAGIC 0x137F /* original minix fs */
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#define MINIX_SUPER_MAGIC2 0x138F /* minix fs, 30 char names */
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#define NEW_MINIX_SUPER_MAGIC 0x2468 /* minix V2 - not implemented */
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#define MINIX_VALID_FS 0x0001 /* Clean fs. */
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#define MINIX_ERROR_FS 0x0002 /* fs has errors. */
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#define MINIX_INODES_PER_BLOCK ((MINIX_BLOCK_SIZE)/(sizeof (struct minix_inode)))
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struct minix_inode {
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unsigned short i_mode;
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unsigned short i_uid;
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unsigned long i_size;
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unsigned long i_time;
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unsigned char i_gid;
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unsigned char i_nlinks;
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unsigned short i_zone[9];
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};
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/*
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* The new minix inode has all the time entries, as well as
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* long block numbers and a third indirect block (7+1+1+1
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* instead of 7+1+1). Also, some previously 8-bit values are
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* now 16-bit. The inode is now 64 bytes instead of 32.
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*/
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struct new_minix_inode {
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unsigned short i_mode;
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unsigned short i_nlinks;
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unsigned short i_uid;
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unsigned short i_gid;
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unsigned long i_size;
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unsigned long i_atime;
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unsigned long i_mtime;
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unsigned long i_ctime;
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unsigned long i_zone[10];
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};
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/*
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* minix super-block data on disk
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*/
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struct minix_super_block {
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unsigned short s_ninodes;
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unsigned short s_nzones;
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unsigned short s_imap_blocks;
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unsigned short s_zmap_blocks;
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unsigned short s_firstdatazone;
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unsigned short s_log_zone_size;
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unsigned long s_max_size;
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unsigned short s_magic;
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unsigned short s_state;
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};
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struct minix_dir_entry {
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unsigned short inode;
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char name[0];
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};
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struct minix_directory_entry {
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unsigned short inode;
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char name[14];
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};
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#define MINIX_NIADDR 2
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typedef unsigned short minix_daddr_t;
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#endif
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