ReactOS  0.4.13-dev-52-g0efcfec
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 #ifndef __REACTOS__
24 #include <stdint.h>
25 #endif
26 
27 #define SECTOR_SIZE 512 /* sector size (bytes) */
28 #define MSDOS_DPS (SECTOR_SIZE / sizeof(struct msdos_dir_entry))
29 #define MSDOS_DPS_BITS 4 /* log2(MSDOS_DPS) */
30 #define MSDOS_DIR_BITS 5 /* log2(sizeof(struct msdos_dir_entry)) */
31 
32 #define ATTR_NONE 0 /* no attribute bits */
33 #define ATTR_RO 1 /* read-only */
34 #define ATTR_HIDDEN 2 /* hidden */
35 #define ATTR_SYS 4 /* system */
36 #define ATTR_VOLUME 8 /* volume label */
37 #define ATTR_DIR 16 /* directory */
38 #define ATTR_ARCH 32 /* archived */
39 
40 /* attribute bits that are copied "as is" */
41 #define ATTR_UNUSED (ATTR_VOLUME | ATTR_ARCH | ATTR_SYS | ATTR_HIDDEN)
42 
43 #define DELETED_FLAG 0xe5 /* marks file as deleted when in name[0] */
44 #define IS_FREE(n) (!*(n) || *(n) == DELETED_FLAG)
45 
46 #define MSDOS_NAME 11 /* maximum name length */
47 #define MSDOS_DOT ". " /* ".", padded to MSDOS_NAME chars */
48 #define MSDOS_DOTDOT ".. " /* "..", padded to MSDOS_NAME chars */
49 
50 #ifdef __REACTOS__
51 #include <pshpack1.h>
52 #endif
53 
54 struct msdos_dir_entry {
55  uint8_t name[MSDOS_NAME]; /* name including extension */
56  uint8_t attr; /* attribute bits */
57  uint8_t lcase; /* Case for base and extension */
58  uint8_t ctime_cs; /* Creation time, centiseconds (0-199) */
59  uint16_t ctime; /* Creation time */
60  uint16_t cdate; /* Creation date */
61  uint16_t adate; /* Last access date */
62  uint16_t starthi; /* High 16 bits of cluster in FAT32 */
63  uint16_t time, date, start; /* time, date and first cluster */
64  uint32_t size; /* file size (in bytes) */
65 } __attribute__ ((packed));
66 
67 #ifdef __REACTOS__
68 #include <poppack.h>
69 #endif
70 
71 #endif /* _MSDOS_FS_H */
GLuint GLenum GLsizei GLsizei GLint GLint GLboolean packed
Definition: glext.h:9271
uint8_t lcase
Definition: msdos_fs.h:57
uint8_t attr
Definition: msdos_fs.h:56
unsigned short int uint16_t
Definition: acefiex.h:54
struct msdos_dir_entry __attribute__((packed))
uint16_t cdate
Definition: msdos_fs.h:60
uint16_t adate
Definition: msdos_fs.h:61
#define MSDOS_NAME
Definition: msdos_fs.h:46
Definition: mkdosfs.c:466
uint16_t time
Definition: msdos_fs.h:63
uint32_t size
Definition: msdos_fs.h:64
BYTE uint8_t
Definition: msvideo1.c:66
__u16 date
Definition: mkdosfs.c:476
uint16_t ctime
Definition: msdos_fs.h:59
UINT32 uint32_t
Definition: types.h:75
uint16_t starthi
Definition: msdos_fs.h:62
Definition: name.c:36
uint8_t ctime_cs
Definition: msdos_fs.h:58
__u16 start
Definition: mkdosfs.c:476