dosfstools  4.2
About: dosfstools are utilities to create, check and label (MS-DOS) FAT filesystems.
  Fossies Dox: dosfstools-4.2.tar.gz  ("unofficial" and yet experimental doxygen-generated source code documentation)  

msdos_fs.h
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1 /* msdos_fs.h - MS-DOS filesystem constants/structures
2 
3  This program is free software: you can redistribute it and/or modify
4  it under the terms of the GNU General Public License as published by
5  the Free Software Foundation, either version 3 of the License, or
6  (at your option) any later version.
7 
8  This program is distributed in the hope that it will be useful,
9  but WITHOUT ANY WARRANTY; without even the implied warranty of
10  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11  GNU General Public License for more details.
12 
13  You should have received a copy of the GNU General Public License
14  along with this program. If not, see <http://www.gnu.org/licenses/>.
15 
16  The complete text of the GNU General Public License
17  can be found in /usr/share/common-licenses/GPL-3 file.
18 */
19 
20 #ifndef _MSDOS_FS_H
21 #define _MSDOS_FS_H
22 
23 #include <stdint.h>
24 
25 #define SECTOR_SIZE 512 /* sector size (bytes) */
26 #define MSDOS_DPS (SECTOR_SIZE / sizeof(struct msdos_dir_entry))
27 #define MSDOS_DPS_BITS 4 /* log2(MSDOS_DPS) */
28 #define MSDOS_DIR_BITS 5 /* log2(sizeof(struct msdos_dir_entry)) */
29 
30 #define ATTR_NONE 0 /* no attribute bits */
31 #define ATTR_RO 1 /* read-only */
32 #define ATTR_HIDDEN 2 /* hidden */
33 #define ATTR_SYS 4 /* system */
34 #define ATTR_VOLUME 8 /* volume label */
35 #define ATTR_DIR 16 /* directory */
36 #define ATTR_ARCH 32 /* archived */
37 
38 /* attribute bits that are copied "as is" */
39 #define ATTR_UNUSED (ATTR_VOLUME | ATTR_ARCH | ATTR_SYS | ATTR_HIDDEN)
40 
41 #define DELETED_FLAG 0xe5 /* marks file as deleted when in name[0] */
42 #define IS_FREE(n) (!*(n) || *(n) == DELETED_FLAG)
43 
44 #define MSDOS_NAME 11 /* maximum name length */
45 #define MSDOS_DOT ". " /* ".", padded to MSDOS_NAME chars */
46 #define MSDOS_DOTDOT ".. " /* "..", padded to MSDOS_NAME chars */
47 
49  uint8_t name[MSDOS_NAME]; /* name including extension */
50  uint8_t attr; /* attribute bits */
51  uint8_t lcase; /* Case for base and extension */
52  uint8_t ctime_cs; /* Creation time, centiseconds (0-199) */
53  uint16_t ctime; /* Creation time */
54  uint16_t cdate; /* Creation date */
55  uint16_t adate; /* Last access date */
56  uint16_t starthi; /* High 16 bits of cluster in FAT32 */
57  uint16_t time, date, start; /* time, date and first cluster */
58  uint32_t size; /* file size (in bytes) */
59 } __attribute__ ((packed));
60 
61 #endif /* _MSDOS_FS_H */
#define MSDOS_NAME
Definition: msdos_fs.h:44
Definition: msdos_fs.h:48
uint16_t date
Definition: msdos_fs.h:57
uint16_t cdate
Definition: msdos_fs.h:54
uint16_t adate
Definition: msdos_fs.h:55
uint16_t starthi
Definition: msdos_fs.h:56
uint8_t attr
Definition: msdos_fs.h:50
uint32_t size
Definition: msdos_fs.h:58
uint16_t time
Definition: msdos_fs.h:57
uint16_t ctime
Definition: msdos_fs.h:53
uint8_t name[11]
Definition: msdos_fs.h:49
uint8_t ctime_cs
Definition: msdos_fs.h:52
uint8_t lcase
Definition: msdos_fs.h:51
uint16_t start
Definition: msdos_fs.h:57