ref: c11957a7915d355d80ff7e6a21721ba05441ca29
dir: /module/disks.m/
# # 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; };