mbr-format 2.0.0 · OCaml Package

type t = private {

active : bool;
(*
true means the partition is active, also known as bootable
*)
first_absolute_sector_chs : Geometry.t;
(*
the CHS address of the first data sector. This is only used by BIOSes with pre-LBA disks (< 1996). This will not be marshalled.
*)
ty : int;
(*
the advertised filesystem type
*)
last_absolute_sector_chs : Geometry.t;
(*
the CHS address of the last data sector. This is only used by BIOSes with pre-LBA disks (< 1996). This will not be marshalled.
*)
first_absolute_sector_lba : int32;
(*
the Logical Block Address (LBA) of the first data sector. This is the absolute sector offset of the first data sector.
*)
sectors : int32;
(*
the total number of sectors in the partition
*)

}

a primary partition within the partition table

val sector_start : t -> int64

sector_start t is the int64 representation of t.first_absolute_sector_lba.

val size_sectors : t -> int64

size_sectors t is the int64 representation of t.sectors.

val make : 
  ?active:bool ->
  partition_type:int ->
  int32 ->
  int32 ->
  (t, string) Stdlib.result

make ?active ~partition_type start length creates a partition starting at sector start and with length length sectors. If the active flag is set then the partition will be marked as active/bootable. Partition type ty determines the advertised filesystem type. ty must be between 1 and 255.

val make' : 
  ?active:bool ->
  partition_type:int ->
  int64 ->
  int64 ->
  (t, string) Stdlib.result

make' ?active ~partition_type sector_start size_sectors is make ?active ~partition_type (Int64.to_int32 sector_start) (Int64.to_int32 size_sectors) when both sector_start and size_sectors fit in int32. Otherwise Error _.

val unmarshal : Cstruct.t -> (t option, string) Stdlib.result

unmarshal buf is the partition entry encoded in the beginning of buf. If it is the empty partition entry None is returned.

package mbr-format