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