+let receive_event (listening_socket_spec:fname_and_fd) (_:fname_and_fd) =
+ (* Do we care about this file? *)
+ try
+ let (_,listening_socket) = listening_socket_spec in
+ let (data_socket, addr) = accept listening_socket in
+ match addr with
+ | ADDR_UNIX(fname) ->
+ let entry_info = try
+ Hashtbl.find unix_socket_watcher addr with _ -> None in
+ match entry_info with
+ | Some(_,execpath,slice_name,fd) ->
+ begin
+ let len = String.length fqp_in in
+ let fqp = String.sub fqp_in 0 (len-3) in
+ let fqp_out = String.concat "." [fqp;"out"] in
+ let fifo_fdout =
+ try openfile fqp_out [O_WRONLY;O_NONBLOCK] 0o777 with
+ _-> (* The client is opening the descriptor too fast *)
+ sleep 1;try openfile fqp_out [O_WRONLY;O_NONBLOCK] 0o777 with
+ _->
+ logprint "%s Output pipe not open, using stdout in place of %s\n" slice_name fqp_out;stdout
+ in
+ ignore(sigprocmask SIG_BLOCK [Sys.sigchld]);
+ (
+ clear_nonblock fifo_fdin;
+ let pid=try Some(create_process execpath [|execpath;slice_name|] fifo_fdin fifo_fdout fifo_fdout) with e -> None in
+ match pid with
+ | Some(pid) ->
+ if (fifo_fdout <> stdout) then close_if_open fifo_fdout;
+ Hashtbl.add pidmap pid (fqp_in,fifo_fdout)
+ | None ->logprint "Error executing service: %s\n" execpath;reopenentry fqp_in
+ );
+ ignore(sigprocmask SIG_UNBLOCK [Sys.sigchld]);
+ end
+ | None -> ()
+ with e-> logprint "Error connecting service %s\n" execpath
+ | _ -> logprint "Serious error! Got a non UNIX connection over a UNIX socket\n"
+