Extended_unix (core_extended.Core_extended.Extended

val fork_exec : ?⁠stdin:Core.Unix.File_descr.t ‑> ?⁠stdout:Core.Unix.File_descr.t ‑> ?⁠stderr:Core.Unix.File_descr.t ‑> ?⁠path_lookup:bool ‑> ?⁠env:[ `Extend of (string * string) list | `Replace of (string * string) list ] ‑> ?⁠working_dir:string ‑> ?⁠setuid:int ‑> ?⁠setgid:int ‑> string ‑> string list ‑> Core.Pid.t

fork_exec prog args ~stdin ~stdout ~stderr ~setuid ~setgid forks a new process that executes the program in file prog, with arguments args. The pid of the new process is returned immediately; the new process executes concurrently with the current process.

The function raises EPERM if when using set{gid,uid} and the user id is not 0.

The standard input and outputs of the new process are connected to the descriptors stdin, stdout and stderr.

The close_on_exec flag is cleared from stderrstdout and stdin so it's safe to pass in fds with close_on_exec set.

Parameter path_lookup: if true than we use PATH to find the process to exec.
Parameter env: specifies the environment the process runs in
ERRORS: Unix.unix_error. This function should not raise EINTR; it will restart itself automatically.
RATIONAL: setuid and setgid do not do a full id drop (e.g.: they save the id in saved id) when the user does not have the privileges required to setuid to anyone.
By default all file descriptors should be set_closexec ASAP after being open to avoid being captured in parallel execution of fork_exec; resetting the closexec flag on the forked flag is a cleaner and more thread safe approach.
BUGS: The capabilities for setuid in linux are not tied to the uid 0 (man 7 capabilities). It is still fair to assume that under most system this capability is there IFF uid == 0. A more fine grain permissionning approach would make this function non-portable and be hard to implement in an async-signal-way.
Because this function keeps the lock for most of its lifespan and restarts automatically on EINTR it might prevent the OCaml signal handlers to run in that thread.

val seteuid : int ‑> unit

val setreuid : uid:int ‑> euid:int ‑> unit

external ntohl : Core.Int32.t ‑> Core.Int32.t = "extended_ml_ntohl"

Network to host order long, like C.

external htonl : Core.Int32.t ‑> Core.Int32.t = "extended_ml_htonl"

Host to network order long, like C.

type statvfs = {

`bsize : int;`	(** file system block size *)
`frsize : int;`	(** fragment size *)
`blocks : int;`	(** size of fs in frsize units *)
`bfree : int;`	(** # free blocks *)
`bavail : int;`	(** # free blocks for non-root *)
`files : int;`	(** # inodes *)
`ffree : int;`	(** # free inodes *)
`favail : int;`	(** # free inodes for non-root *)
`fsid : int;`	(** file system ID *)
`flag : int;`	(** mount flags *)
`namemax : int;`	(** maximum filename length *)

}

include sig ... end

val statvfs_of_sexp : Base.Sexp.t ‑> statvfs

val sexp_of_statvfs : statvfs ‑> Base.Sexp.t

val bin_statvfs : statvfs Bin_prot.Type_class.t

val bin_read_statvfs : statvfs Bin_prot.Read.reader

val __bin_read_statvfs__ : (int ‑> statvfs) Bin_prot.Read.reader

val bin_reader_statvfs : statvfs Bin_prot.Type_class.reader

val bin_size_statvfs : statvfs Bin_prot.Size.sizer

val bin_write_statvfs : statvfs Bin_prot.Write.writer

val bin_writer_statvfs : statvfs Bin_prot.Type_class.writer

val bin_shape_statvfs : Bin_prot.Shape.t

external statvfs : string ‑> statvfs = "statvfs_stub"

get file system statistics

external getloadavg : unit ‑> float * float * float = "getloadavg_stub"

get load averages

module Extended_passwd : sig ... end

external strptime : fmt:string ‑> string ‑> Core.Unix.tm = "unix_strptime"

module Inet_port : sig ... end

Simple int wrapper to be explicit about ports.

module Mac_address : sig ... end

module Quota : sig ... end

module Mount_entry : sig ... end

val terminal_width : int Core.Lazy.t