1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2/*
3 *  Name                         : qnx4_fs.h
4 *  Author                       : Richard Frowijn
5 *  Function                     : qnx4 global filesystem definitions
6 *  History                      : 23-03-1998 created
7 */
8#ifndef _LINUX_QNX4_FS_H
9#define _LINUX_QNX4_FS_H
10
11#include <linux/types.h>
12#include <linux/qnxtypes.h>
13#include <linux/magic.h>
14
15#define QNX4_ROOT_INO 1
16
17#define QNX4_MAX_XTNTS_PER_XBLK	60
18/* for di_status */
19#define QNX4_FILE_USED          0x01
20#define QNX4_FILE_MODIFIED      0x02
21#define QNX4_FILE_BUSY          0x04
22#define QNX4_FILE_LINK          0x08
23#define QNX4_FILE_INODE         0x10
24#define QNX4_FILE_FSYSCLEAN     0x20
25
26#define QNX4_I_MAP_SLOTS	8
27#define QNX4_Z_MAP_SLOTS	64
28#define QNX4_VALID_FS		0x0001	/* Clean fs. */
29#define QNX4_ERROR_FS		0x0002	/* fs has errors. */
30#define QNX4_BLOCK_SIZE         0x200	/* blocksize of 512 bytes */
31#define QNX4_BLOCK_SIZE_BITS    9	/* blocksize shift */
32#define QNX4_DIR_ENTRY_SIZE     0x040	/* dir entry size of 64 bytes */
33#define QNX4_DIR_ENTRY_SIZE_BITS 6	/* dir entry size shift */
34#define QNX4_XBLK_ENTRY_SIZE    0x200	/* xblk entry size */
35#define QNX4_INODES_PER_BLOCK   0x08	/* 512 / 64 */
36
37/* for filenames */
38#define QNX4_SHORT_NAME_MAX	16
39#define QNX4_NAME_MAX		48
40
41/*
42 * This is the original qnx4 inode layout on disk.
43 */
44struct qnx4_inode_entry {
45	char		di_fname[QNX4_SHORT_NAME_MAX];
46	qnx4_off_t	di_size;
47	qnx4_xtnt_t	di_first_xtnt;
48	__le32		di_xblk;
49	__le32		di_ftime;
50	__le32		di_mtime;
51	__le32		di_atime;
52	__le32		di_ctime;
53	qnx4_nxtnt_t	di_num_xtnts;
54	qnx4_mode_t	di_mode;
55	qnx4_muid_t	di_uid;
56	qnx4_mgid_t	di_gid;
57	qnx4_nlink_t	di_nlink;
58	__u8		di_zero[4];
59	qnx4_ftype_t	di_type;
60	__u8		di_status;
61};
62
63struct qnx4_link_info {
64	char		dl_fname[QNX4_NAME_MAX];
65	__le32		dl_inode_blk;
66	__u8		dl_inode_ndx;
67	__u8		dl_spare[10];
68	__u8		dl_status;
69};
70
71struct qnx4_xblk {
72	__le32		xblk_next_xblk;
73	__le32		xblk_prev_xblk;
74	__u8		xblk_num_xtnts;
75	__u8		xblk_spare[3];
76	__le32		xblk_num_blocks;
77	qnx4_xtnt_t	xblk_xtnts[QNX4_MAX_XTNTS_PER_XBLK];
78	char		xblk_signature[8];
79	qnx4_xtnt_t	xblk_first_xtnt;
80};
81
82struct qnx4_super_block {
83	struct qnx4_inode_entry RootDir;
84	struct qnx4_inode_entry Inode;
85	struct qnx4_inode_entry Boot;
86	struct qnx4_inode_entry AltBoot;
87};
88
89#endif
90