package fat-filesystem

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in-package search v0.2.0

Pure OCaml implementation of the FAT filesystem

Install

dune-project

Dependency

github.com Readme Changelog ISC License Edit opam file Versions (5)

Authors

Maintainers

D

dave@recoil.org

Sources

fat-filesystem-0.15.1.tbz

sha256=6211952a8dd008ab7d02cdb3a6545a65a5ff8047e71dd8ce48a09fb500fe10a3

sha512=cddfa7e43dbd6ecab23113b3136c91f60c3890efc773603e6a3c3dd531c19e437a8e10b0923e1ce7fbc1d2ca77e6f098040e94678f79f04cec98c56ecef4b5cd

doc/fat-filesystem/Fat_update/index.html

Module `Fat_update`Source

Sourcetype data =

| String of string
| Cstruct of Cstruct.t
(*
payload of a buffer update
*)

Sourcetype t = {

offset : int64;
data : data;

}

an update to a block of data (which may be in memory or on disk or somewhere else)

Sourceval to_string : t -> string

Sourceval from_string : int64 -> string -> t

Sourceval from_cstruct : int64 -> Cstruct.t -> t

Sourceval shift : int64 -> t -> t

Sourceval total_length : t -> int64

total_length x returns the minimum size of the block of data needed to apply this update. If the block is currently smaller then it will need to be enlarged

Sourceval apply : Cstruct.t -> t -> unit

apply buf update updates buf with update

Sourceval clip : t -> int64 -> int -> t

clip x offset length returns the fraction of the update between offset and offset+length in bytes

Sourceval is_empty : t -> bool

Sourceval split : t -> int -> t list

split x sector_size returns x as a sequence of consecutive updates, each of which corresponds to a region of length sector_size. Note empty updates are omitted.

Sourceval map : t list -> int list -> int -> t list

map xs offsets takes a sequence of virtual sector updates (eg within the virtual address space of a file) and a sequence of physical offsets (eg the location of physical sectors on disk) and returns a sequence of physical sector updates.