transport-helper: check status code of finish_command

Previously the status code of all helpers were ignored, allowing
errors that occur to go unnoticed if the error text output by the
helper is not noticed.

Signed-off-by: Sverre Rabbelier <srabbelier@gmail.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/transport-helper.c b/transport-helper.c
index dd8dd2c1aebb94b06b6a118d88f4a78ac6cefe45..e02f4a3e5a1bdbdbd1cfa7a9a1a449e3643485df 100644 (file)
--- a/transport-helper.c
+++ b/transport-helper.c
@@ -209,6 +209,7 @@ static int disconnect_helper(struct transport *transport)
 {
        struct helper_data *data = transport->data;
        struct strbuf buf = STRBUF_INIT;
+       int res = 0;
 
        if (data->helper) {
                if (debug)
@@ -220,13 +221,13 @@ static int disconnect_helper(struct transport *transport)
                close(data->helper->in);
                close(data->helper->out);
                fclose(data->out);
-               finish_command(data->helper);
+               res = finish_command(data->helper);
                free((char *)data->helper->argv[0]);
                free(data->helper->argv);
                free(data->helper);
                data->helper = NULL;
        }
-       return 0;
+       return res;
 }
 
 static const char *unsupported_options[] = {
@@ -304,12 +305,13 @@ static void standard_options(struct transport *t)
 
 static int release_helper(struct transport *transport)
 {
+       int res = 0;
        struct helper_data *data = transport->data;
        free_refspec(data->refspec_nr, data->refspecs);
        data->refspecs = NULL;
-       disconnect_helper(transport);
+       res = disconnect_helper(transport);
        free(transport->data);
-       return 0;
+       return res;
 }
 
 static int fetch_with_fetch(struct transport *transport,
@@ -415,8 +417,11 @@ static int fetch_with_import(struct transport *transport,
                sendline(data, &buf);
                strbuf_reset(&buf);
        }
-       disconnect_helper(transport);
-       finish_command(&fastimport);
+       if (disconnect_helper(transport))
+               die("Error while disconnecting helper");
+       if (finish_command(&fastimport))
+               die("Error while running fast-import");
+
        free(fastimport.argv);
        fastimport.argv = NULL;
 
@@ -760,8 +765,10 @@ static int push_refs_with_export(struct transport *transport,
                die("Couldn't run fast-export");
 
        data->no_disconnect_req = 1;
-       finish_command(&exporter);
-       disconnect_helper(transport);
+       if (finish_command(&exporter))
+               die("Error while running fast-export");
+       if (disconnect_helper(transport))
+               die("Error while disconnecting helper");
        return 0;
 }