Re: [msysGit] [PATCH/RFC 07/11] run-command: support input-fd

> This patch adds the possibility to supply a non-0
> file descriptor for communucation, instead of the
> default-created pipe. The pipe gets duplicated, so
> the caller can free it's handles.
>
> This is usefull for async communication over sockets.
>
> Signed-off-by: Erik Faye-Lund <kusmabite@gmail.com>
> ---
>  run-command.c |    5 ++++-
>  1 files changed, 4 insertions(+), 1 deletions(-)
>
> diff --git a/run-command.c b/run-command.c
> index e5a0e06..98771ef 100644
> --- a/run-command.c
> +++ b/run-command.c
> @@ -327,7 +327,10 @@ int start_async(struct async *async)
>  {
>  	int pipe_out[2];
>
> -	if (pipe(pipe_out) < 0)
> +	if (async->out) {
> +		pipe_out[0] = dup(async->out);
> +		pipe_out[1] = dup(async->out);
> +	} else if (pipe(pipe_out) < 0)
>  		return error("cannot create pipe: %s", strerror(errno));
>  	async->out = pipe_out[0];