package eio_posix

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package eio_posix

eio_posix
- Eio_posix
  - Low_level
    
    Fd
    
    Open_flags
    
    Process
    
    Fork_action

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Setup actions to perform in the child process.

type t = Eio_unix.Private.Fork_action.t

val execve : string -> argv:string array -> env:string array -> t

See execve(2). This replaces the current executable, so it only makes sense as the last action to be performed.

val chdir : string -> t

chdir path changes directory to path.

val fchdir : Fd.t -> t

fchdir dir changes directory to dir.

val inherit_fds : 
  (int * Fd.t * [< `Blocking | `Nonblocking | `Preserve_blocking ]) list ->
  t

inherit_fds mapping marks file descriptors as not close-on-exec and renumbers them.

For each key in mapping, we use dup2 to duplicate the source descriptor. If there are cycles in mapping, a temporary FD is used to break the cycle. A mapping from an FD to itself simply clears the close-on-exec flag.

For each FD, you can also say whether it should be set as blocking or non-blocking.