#include "kpartx.h"

#include <stdio.h>

#define UNIXWARE_FS_UNUSED     0

#define UNIXWARE_NUMSLICE      16

#define UNIXWARE_DISKMAGIC     (0xCA5E600D)

#define UNIXWARE_DISKMAGIC2    (0x600DDEEE)

struct unixware_slice {

	unsigned short s_label;		/* label */

	unsigned short s_flags;		/* permission flags */

	unsigned int   start_sect;	/* starting sector */

	unsigned int   nr_sects;	/* number of sectors in slice */

};

struct unixware_disklabel {

	unsigned int   d_type;		/* drive type */

	unsigned char  d_magic[4];	/* the magic number */

	unsigned int   d_version;	/* version number */

	char    d_serial[12];		/* serial number of the device */

	unsigned int   d_ncylinders;	/* # of data cylinders per device */

	unsigned int   d_ntracks;	/* # of tracks per cylinder */

	unsigned int   d_nsectors;	/* # of data sectors per track */

	unsigned int   d_secsize;	/* # of bytes per sector */

	unsigned int   d_part_start;	/* # of first sector of this partition */

	unsigned int   d_unknown1[12];	/* ? */

	unsigned int   d_alt_tbl;	/* byte offset of alternate table */

	unsigned int   d_alt_len;	/* byte length of alternate table */

	unsigned int   d_phys_cyl;	/* # of physical cylinders per device */

	unsigned int   d_phys_trk;	/* # of physical tracks per cylinder */

	unsigned int   d_phys_sec;	/* # of physical sectors per track */

	unsigned int   d_phys_bytes;	/* # of physical bytes per sector */

	unsigned int   d_unknown2;	/* ? */

	unsigned int   d_unknown3;	/* ? */

	unsigned int   d_pad[8];	/* pad */

	struct unixware_vtoc {

		unsigned char   v_magic[4];	/* the magic number */

		unsigned int    v_version;	/* version number */

		char    v_name[8];		/* volume name */

		unsigned short  v_nslices;	/* # of slices */

		unsigned short  v_unknown1;	/* ? */

		unsigned int    v_reserved[10];	/* reserved */

		struct unixware_slice

		    v_slice[UNIXWARE_NUMSLICE]; /* slice headers */

	} vtoc;

};  /* 408 */

int

read_unixware_pt(int fd, struct slice all, struct slice *sp, unsigned int ns) {

	struct unixware_disklabel *l;

	struct unixware_slice *p;

	unsigned int offset = all.start;

	char *bp;

	unsigned int n = 0;

	bp = getblock(fd, offset+29);	/* 1 sector suffices */

	if (bp == NULL)

		return -1;

	l = (struct unixware_disklabel *) bp;

	if (four2int(l->d_magic) != UNIXWARE_DISKMAGIC ||

	    four2int(l->vtoc.v_magic) != UNIXWARE_DISKMAGIC2)

		return -1;

	p = &l->vtoc.v_slice[1];	/* slice 0 is the whole disk. */

	while (p - &l->vtoc.v_slice[0] < UNIXWARE_NUMSLICE) {

		if (p->s_label == UNIXWARE_FS_UNUSED)

			/* nothing */;

		else if (n < ns) {

			sp[n].start = p->start_sect;

			sp[n].size = p->nr_sects;

			n++;

		} else {

			fprintf(stderr,

				"unixware_partition: too many slices\n");

			break;

		}

		p++;

	}

	return n;

}