X-Git-Url: https://jasonwoof.com/gitweb/?p=dwm.git;a=blobdiff_plain;f=util.c;h=d39d73c65b26873d3d2e59f4eb1633b17a13c7f6;hp=eba841613bf2a66e89a2878586b5d4fa647627de;hb=2091200c957783deed032380d56c4199a23c6b81;hpb=e7fa504c3e095db65853afd39d2d1324d439dcf4

diff --git a/util.c b/util.c
index eba8416..d39d73c 100644
--- a/util.c
+++ b/util.c
@@ -1,59 +1,52 @@
-/*
- * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
- * See LICENSE file for license details.
- */
-
+/* See LICENSE file for copyright and license details. */
+#include "dwm.h"
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <sys/types.h>
 #include <sys/wait.h>
 #include <unistd.h>
 
-#include "dwm.h"
+/* extern */
+
+void *
+emallocz(unsigned int size) {
+	void *res = calloc(1, size);
+
+	if(!res)
+		eprint("fatal: could not malloc() %u bytes\n", size);
+	return res;
+}
 
 void
-error(const char *errstr, ...) {
+eprint(const char *errstr, ...) {
 	va_list ap;
+
 	va_start(ap, errstr);
 	vfprintf(stderr, errstr, ap);
 	va_end(ap);
-	exit(1);
-}
-
-static void
-bad_malloc(unsigned int size)
-{
-	fprintf(stderr, "fatal: could not malloc() %d bytes\n",
-			(int) size);
-	exit(1);
-}
-
-void *
-emallocz(unsigned int size)
-{
-	void *res = calloc(1, size);
-	if(!res)
-		bad_malloc(size);
-	return res;
+	exit(EXIT_FAILURE);
 }
 
 void
-spawn(Arg *arg)
-{
-	char **argv = (char **)arg->argv;
-	if(!argv || !argv[0])
+spawn(const char *arg) {
+	static char *shell = NULL;
+
+	if(!shell && !(shell = getenv("SHELL")))
+		shell = "/bin/sh";
+	if(!arg)
 		return;
+	/* The double-fork construct avoids zombie processes and keeps the code
+	 * clean from stupid signal handlers. */
 	if(fork() == 0) {
 		if(fork() == 0) {
 			if(dpy)
 				close(ConnectionNumber(dpy));
 			setsid();
-			execvp(argv[0], argv);
-			fprintf(stderr, "dwm: execvp %s", argv[0]);
+			execl(shell, shell, "-c", arg, (char *)NULL);
+			fprintf(stderr, "dwm: execl '%s -c %s'", shell, arg);
 			perror(" failed");
 		}
-		exit (0);
+		exit(0);
 	}
 	wait(0);
 }