1 files changed, 101 insertions, 0 deletions
diff --git a/device.h b/device.h
new file mode 100644
index 0000000..e577029
--- /dev/null
+++ b/device.h
@@ -0,0 +1,101 @@
+#ifndef MTOOLS_DEVICE_H
+#define MTOOLS_DEVICE_H
+/*  Copyright 2021 Alain Knaff.
+ *  This file is part of mtools.
+ *
+ *  Mtools 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.
+ *
+ *  Mtools 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 Mtools.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* Functions needed to work with struct device */
+
+#include "llong.h"
+
+/* Stuff related to particular device definitions are in devices.c
+   (note the plural) */
+
+#define SCSI_FLAG		0x001u
+#define PRIV_FLAG		0x002u
+#define NOLOCK_FLAG		0x004u
+#define USE_XDF_FLAG		0x008u
+#define MFORMAT_ONLY_FLAG	0x010u
+#define VOLD_FLAG		0x020u
+#define FLOPPYD_FLAG		0x040u
+#define FILTER_FLAG		0x080u
+#define SWAP_FLAG		0x100u
+
+#define IS_SCSI(x)  ((x) && ((x)->misc_flags & SCSI_FLAG))
+#define IS_PRIVILEGED(x) ((x) && ((x)->misc_flags & PRIV_FLAG))
+#define IS_NOLOCK(x) ((x) && ((x)->misc_flags & NOLOCK_FLAG))
+#define IS_MFORMAT_ONLY(x) ((x) && ((x)->misc_flags & MFORMAT_ONLY_FLAG))
+#define SHOULD_USE_VOLD(x) ((x)&& ((x)->misc_flags & VOLD_FLAG))
+#define SHOULD_USE_XDF(x) ((x)&& ((x)->misc_flags & USE_XDF_FLAG))
+#define DO_SWAP(x)  ((x) && ((x)->misc_flags & SWAP_FLAG))
+
+typedef struct device {
+	const char *name;       /* full path to device */
+
+	char drive;	   	/* the drive letter */
+	int fat_bits;		/* FAT encoding scheme */
+
+	int mode;		/* any special open() flags */
+	unsigned int tracks;	/* tracks */
+	uint16_t heads;		/* heads */
+	uint16_t sectors;	/* sectors */
+	unsigned int hidden;	/* number of hidden sectors. Used for
+				 * mformatting partitioned devices */
+
+	off_t offset;	       	/* skip this many bytes */
+
+	unsigned int partition;
+
+	unsigned int misc_flags;
+
+	/* Linux only stuff */
+	uint8_t ssize;
+	unsigned int use_2m;
+
+	char *precmd;		/* command to be executed before opening
+				 * the drive */
+
+	/* internal variables */
+	int file_nr;		/* used during parsing */
+	unsigned int blocksize;	/* size of disk block in bytes */
+
+	unsigned int codepage;		/* codepage for shortname encoding */
+
+	const char *data_map;
+
+	uint32_t tot_sectors;	/* Amount of total sectors, more
+				 * precise than tracks (in case of
+				 * partitions which may take up parts
+				 * of a track) */
+
+	uint16_t sector_size; /* Non-default sector size */
+
+	const char *cfg_filename; /* used for debugging purposes */
+} device_t;
+
+extern struct device *devices;
+extern struct device const_devices[];
+extern const unsigned int nr_const_devices;
+
+int lock_dev(int fd, int mode, struct device *dev);
+
+void precmd(struct device *dev);
+
+int check_if_sectors_fit(uint32_t tot_sectors, mt_off_t maxBytes,
+			 uint32_t sectorSize, char *errmsg);
+int chs_to_totsectors(struct device *dev, char *errmsg);
+
+#endif