1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Name : qnx6_fs.h
4 * Author : Kai Bankett
5 * Function : qnx6 global filesystem definitions
6 * History : 17-01-2012 created
7 */
8#ifndef _LINUX_QNX6_FS_H
9#define _LINUX_QNX6_FS_H
10
11#include <linux/types.h>
12#include <linux/magic.h>
13
14#define QNX6_ROOT_INO 1
15
16/* for di_status */
17#define QNX6_FILE_DIRECTORY 0x01
18#define QNX6_FILE_DELETED 0x02
19#define QNX6_FILE_NORMAL 0x03
20
21#define QNX6_SUPERBLOCK_SIZE 0x200 /* superblock always is 512 bytes */
22#define QNX6_SUPERBLOCK_AREA 0x1000 /* area reserved for superblock */
23#define QNX6_BOOTBLOCK_SIZE 0x2000 /* heading bootblock area */
24#define QNX6_DIR_ENTRY_SIZE 0x20 /* dir entry size of 32 bytes */
25#define QNX6_INODE_SIZE 0x80 /* each inode is 128 bytes */
26#define QNX6_INODE_SIZE_BITS 7 /* inode entry size shift */
27
28#define QNX6_NO_DIRECT_POINTERS 16 /* 16 blockptrs in sbl/inode */
29#define QNX6_PTR_MAX_LEVELS 5 /* maximum indirect levels */
30
31/* for filenames */
32#define QNX6_SHORT_NAME_MAX 27
33#define QNX6_LONG_NAME_MAX 510
34
35/* list of mount options */
36#define QNX6_MOUNT_MMI_FS 0x010000 /* mount as Audi MMI 3G fs */
37
38/*
39 * This is the original qnx6 inode layout on disk.
40 * Each inode is 128 byte long.
41 */
42struct qnx6_inode_entry {
43 __fs64 di_size;
44 __fs32 di_uid;
45 __fs32 di_gid;
46 __fs32 di_ftime;
47 __fs32 di_mtime;
48 __fs32 di_atime;
49 __fs32 di_ctime;
50 __fs16 di_mode;
51 __fs16 di_ext_mode;
52 __fs32 di_block_ptr[QNX6_NO_DIRECT_POINTERS];
53 __u8 di_filelevels;
54 __u8 di_status;
55 __u8 di_unknown2[2];
56 __fs32 di_zero2[6];
57};
58
59/*
60 * Each directory entry is maximum 32 bytes long.
61 * If more characters or special characters required it is stored
62 * in the longfilenames structure.
63 */
64struct qnx6_dir_entry {
65 __fs32 de_inode;
66 __u8 de_size;
67 char de_fname[QNX6_SHORT_NAME_MAX];
68};
69
70/*
71 * Longfilename direntries have a different structure
72 */
73struct qnx6_long_dir_entry {
74 __fs32 de_inode;
75 __u8 de_size;
76 __u8 de_unknown[3];
77 __fs32 de_long_inode;
78 __fs32 de_checksum;
79};
80
81struct qnx6_long_filename {
82 __fs16 lf_size;
83 __u8 lf_fname[QNX6_LONG_NAME_MAX];
84};
85
86struct qnx6_root_node {
87 __fs64 size;
88 __fs32 ptr[QNX6_NO_DIRECT_POINTERS];
89 __u8 levels;
90 __u8 mode;
91 __u8 spare[6];
92};
93
94struct qnx6_super_block {
95 __fs32 sb_magic;
96 __fs32 sb_checksum;
97 __fs64 sb_serial;
98 __fs32 sb_ctime; /* time the fs was created */
99 __fs32 sb_atime; /* last access time */
100 __fs32 sb_flags;
101 __fs16 sb_version1; /* filesystem version information */
102 __fs16 sb_version2; /* filesystem version information */
103 __u8 sb_volumeid[16];
104 __fs32 sb_blocksize;
105 __fs32 sb_num_inodes;
106 __fs32 sb_free_inodes;
107 __fs32 sb_num_blocks;
108 __fs32 sb_free_blocks;
109 __fs32 sb_allocgroup;
110 struct qnx6_root_node Inode;
111 struct qnx6_root_node Bitmap;
112 struct qnx6_root_node Longfile;
113 struct qnx6_root_node Unknown;
114};
115
116/* Audi MMI 3G superblock layout is different to plain qnx6 */
117struct qnx6_mmi_super_block {
118 __fs32 sb_magic;
119 __fs32 sb_checksum;
120 __fs64 sb_serial;
121 __u8 sb_spare0[12];
122 __u8 sb_id[12];
123 __fs32 sb_blocksize;
124 __fs32 sb_num_inodes;
125 __fs32 sb_free_inodes;
126 __fs32 sb_num_blocks;
127 __fs32 sb_free_blocks;
128 __u8 sb_spare1[4];
129 struct qnx6_root_node Inode;
130 struct qnx6_root_node Bitmap;
131 struct qnx6_root_node Longfile;
132 struct qnx6_root_node Unknown;
133};
134
135#endif
136