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  */
44 struct 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 
63 struct 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 
71 struct 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 
82 struct 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