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 | */ |
42 | struct 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 | */ |
64 | struct 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 | */ |
73 | struct 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 | |
81 | struct qnx6_long_filename { |
82 | __fs16 lf_size; |
83 | __u8 lf_fname[QNX6_LONG_NAME_MAX]; |
84 | }; |
85 | |
86 | struct 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 | |
94 | struct 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 */ |
117 | struct 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 | |