*-daemon: properly log ready fd error

Author: navi-desu

src/start-stop-daemon/start-stop-daemon.c

@@ -1118,8 +1118,10 @@ int main(int argc, char **argv)
 		cloexec_fds_from(3);
 
 		if (notify.type == NOTIFY_FD) {
-			if (close(notify.pipe[0]) == -1 || dup2(notify.pipe[1], notify.fd) == -1)
-				eerrorx("Failed to initialize notify fd.");
+			if (close(notify.pipe[0]) == -1)
+				eerrorx("%s: failed to close notify pipe[0]: %s", applet, strerror(errno));
+			if (dup2(notify.pipe[1], notify.fd) == -1)
+				eerrorx("%s: failed to initialize notify fd: %s", applet, strerror(errno));
 		}
 
 		if (scheduler != NULL) {

src/supervise-daemon/supervise-daemon.c

@@ -597,7 +597,7 @@ RC_NORETURN static void child_process(char *exec, char **argv)
 	cloexec_fds_from(3);
 
 	if (notify.type == NOTIFY_FD && dup2(notify.pipe[1], notify.fd) == -1)
-		eerrorx("Failed to initialize ready fd.");
+		eerrorx("%s: failed to dup ready fd: %s", applet, strerror(errno));
 
 	cmdline = make_cmdline(argv);
 	syslog(LOG_INFO, "Child command line: %s", cmdline);