## adapted from /sys/include/disk.h on Plan 9: subject to the Lucent Public License 1.02#Disks: module{	PATH: con "/dis/lib/disks.dis"; 	# disk partition interface	Disk: adt {		prefix:	string;		part:	string;		fd:	ref Sys->FD;		wfd:	ref Sys->FD;		ctlfd:	ref Sys->FD;		rdonly:	int;		dtype:	string;	# "file", "sd" or "floppy" 		secs:	big;		secsize:	int;		size:	big;		offset:	big;	# within larger disk, perhaps		width:	int;	# of disk size in bytes as decimal string		c:	int;	# geometry: cyl, head, sectors		h:	int;		s:	int;		chssrc:	string; # "part", "disk" or "guess" 		open:	fn(f: string, mode: int, noctl: int): ref Disk;		readn:	fn(d: self ref Disk, buf: array of byte, n: int): int;	}; 	init:	fn(); 	# PC partition grot	PCpart: adt {		active:	int;	# Active or 0		ptype:	int;		base:	big;	# base block address: 0 or first extended partition in chain		offset:	big;	# block offset from base to partition		size:		big;	# in sectors 		extract:	fn(a: array of byte, d: ref Disk): PCpart;		bytes:	fn(p: self PCpart, d: ref Disk): array of byte;	};	Toffset:	con 446;	# offset of partition table in sector	TentrySize:	con 2+2*3+4+4;	# partition table entry size	NTentry:	con 4;	# number of table entries	Magic0:	con 16r55;	Magic1:	con 16rAA;	Active:	con 16r80;	# partition is active	Type9: 	con 16r39;	# partition type used by Plan 9 and Inferno 	chstext:	fn(p: array of byte): string;};