Re: [PATCH v2] Allow git-shell to be used as a ssh forced-command

> When using a forced-command, OpenSSH sets the SSH_ORIGINAL_COMMAND
> variable to what would otherwise be passed to $SHELL -c. When this
> variable is set and git-shell was given no argument, we use it.
> 
> Signed-off-by: Mike Hommey <mh@glandium.org>
> ---
>  shell.c |    9 +++++++--
>  1 files changed, 7 insertions(+), 2 deletions(-)
> 
> diff --git a/shell.c b/shell.c
> index b968be7..86c9273 100644
> --- a/shell.c
> +++ b/shell.c
> @@ -72,11 +72,16 @@ int main(int argc, char **argv)
>  	/*
>  	 * We do not accept anything but "-c" followed by "cmd arg",
>  	 * where "cmd" is a very limited subset of git commands.
> +	 * If no argument is given at all, see whether we were run from
> +	 * a ssh forced-command and use the original command if so.
>  	 */
>  	else if (argc != 3 || strcmp(argv[1], "-c"))
> -		die("What do you think I am? A shell?");
> +		if (argc != 1 || !(prog = getenv("SSH_ORIGINAL_COMMAND")))
> +			die("What do you think I am? A shell?");
> +
> +	if (!prog)