builtin/submodule--helper: factor out submodule updating

diff --git a/credential.c b/credential.c
index 9747f47b18bf2e622f11f41889faaa4b1845ac8d..62be651b03b55ee4d478706e51ea8606b10739f0 100644 (file)
--- a/credential.c
+++ b/credential.c
@@ -5,6 +5,7 @@
 #include "run-command.h"
 #include "url.h"
 #include "prompt.h"
+#include "sigchain.h"
 
 void credential_init(struct credential *c)
 {
@@ -227,8 +228,10 @@ static int run_credential_helper(struct credential *c,
                return -1;
 
        fp = xfdopen(helper.in, "w");
+       sigchain_push(SIGPIPE, SIG_IGN);
        credential_write(c, fp);
        fclose(fp);
+       sigchain_pop(SIGPIPE);
 
        if (want_output) {
                int r;