dwl

commit 41bb7a7679595ca50ce2e34737ba09f9a28e6a54
parent 2f39fb84ac737d5e09aac2f4462565c74825a287
Author: Devin J. Pohly <djpohly@gmail.com>
Date:   Mon, 10 May 2021 11:49:16 -0500

Merge branch 'pipe-status'

Diffstat:
M
dwl.c
 | 
9
++++++++-

1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/dwl.c b/dwl.c
@@ -1809,15 +1809,22 @@ run(char *startup_cmd)
 	setenv("WAYLAND_DISPLAY", socket, 1);
 
 	if (startup_cmd) {
+		int piperw[2];
+		pipe(piperw);
 		startup_pid = fork();
 		if (startup_pid < 0)
 			EBARF("startup: fork");
 		if (startup_pid == 0) {
-			dup2(STDERR_FILENO, STDOUT_FILENO);
+			dup2(piperw[0], STDIN_FILENO);
+			close(piperw[1]);
 			execl("/bin/sh", "/bin/sh", "-c", startup_cmd, NULL);
 			EBARF("startup: execl");
 		}
+		dup2(piperw[1], STDOUT_FILENO);
+		close(piperw[0]);
 	}
+	/* If nobody is reading the status output, don't terminate */
+	signal(SIGPIPE, SIG_IGN);
 
 	/* Run the Wayland event loop. This does not return until you exit the
 	 * compositor. Starting the backend rigged up all of the necessary event