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