1 files changed, 61 insertions, 0 deletions

diff --git a/dosfstools/src/msdos_fs.h b/dosfstools/src/msdos_fs.h
new file mode 100644
index 000000000..54b2a3446
--- /dev/null
+++ b/dosfstools/src/msdos_fs.h
@@ -0,0 +1,61 @@
+/* msdos_fs.h - MS-DOS filesystem constants/structures
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+   The complete text of the GNU General Public License
+   can be found in /usr/share/common-licenses/GPL-3 file.
+*/
+
+#ifndef _MSDOS_FS_H
+#define _MSDOS_FS_H
+
+#include <stdint.h>
+
+#define SECTOR_SIZE 512		/* sector size (bytes) */
+#define MSDOS_DPS (SECTOR_SIZE / sizeof(struct msdos_dir_entry))
+#define MSDOS_DPS_BITS 4	/* log2(MSDOS_DPS) */
+#define MSDOS_DIR_BITS 5	/* log2(sizeof(struct msdos_dir_entry)) */
+
+#define ATTR_NONE 0	/* no attribute bits */
+#define ATTR_RO 1	/* read-only */
+#define ATTR_HIDDEN 2	/* hidden */
+#define ATTR_SYS 4	/* system */
+#define ATTR_VOLUME 8	/* volume label */
+#define ATTR_DIR 16	/* directory */
+#define ATTR_ARCH 32	/* archived */
+
+/* attribute bits that are copied "as is" */
+#define ATTR_UNUSED (ATTR_VOLUME | ATTR_ARCH | ATTR_SYS | ATTR_HIDDEN)
+
+#define DELETED_FLAG 0xe5	/* marks file as deleted when in name[0] */
+#define IS_FREE(n) (!*(n) || *(n) == DELETED_FLAG)
+
+#define MSDOS_NAME 11			/* maximum name length */
+#define MSDOS_DOT ".          "		/* ".", padded to MSDOS_NAME chars */
+#define MSDOS_DOTDOT "..         "	/* "..", padded to MSDOS_NAME chars */
+
+struct msdos_dir_entry {
+    uint8_t name[8], ext[3];	/* name and extension */
+    uint8_t attr;		/* attribute bits */
+    uint8_t lcase;		/* Case for base and extension */
+    uint8_t ctime_cs;		/* Creation time, centiseconds (0-199) */
+    uint16_t ctime;		/* Creation time */
+    uint16_t cdate;		/* Creation date */
+    uint16_t adate;		/* Last access date */
+    uint16_t starthi;		/* High 16 bits of cluster in FAT32 */
+    uint16_t time, date, start;	/* time, date and first cluster */
+    uint32_t size;		/* file size (in bytes) */
+} __attribute__ ((packed));
+
+#endif /* _MSDOS_FS_H */