X-Git-Url: https://jasonwoof.com/gitweb/?a=blobdiff_plain;f=util.c;h=3e5fd1e074c0946dee5b49c47134eec76dd2b06b;hb=789717d109016279bd541efe5b72899fbcf68335;hp=3553f5d3f01ab8ad5cb3d5861a1d6811238c834f;hpb=8a34fa50f75f4d6d8af234ac0c4f6d40b988d700;p=dwm.git

diff --git a/util.c b/util.c
index 3553f5d..3e5fd1e 100644
--- a/util.c
+++ b/util.c
@@ -2,13 +2,37 @@
  * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
  * See LICENSE file for license details.
  */
+#include "dwm.h"
 
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+/* static */
+
+static void
+bad_malloc(unsigned int size)
+{
+	fprintf(stderr, "fatal: could not malloc() %d bytes\n",
+			(int) size);
+	exit(1);
+}
+
+/* extern */
+
+void *
+emallocz(unsigned int size)
+{
+	void *res = calloc(1, size);
+	if(!res)
+		bad_malloc(size);
+	return res;
+}
 
 void
-error(char *errstr, ...) {
+eprint(const char *errstr, ...) {
 	va_list ap;
 	va_start(ap, errstr);
 	vfprintf(stderr, errstr, ap);
@@ -16,3 +40,22 @@ error(char *errstr, ...) {
 	exit(1);
 }
 
+void
+spawn(Arg *arg)
+{
+	char **argv = (char **)arg->argv;
+	if(!argv || !argv[0])
+		return;
+	if(fork() == 0) {
+		if(fork() == 0) {
+			if(dpy)
+				close(ConnectionNumber(dpy));
+			setsid();
+			execvp(argv[0], argv);
+			fprintf(stderr, "dwm: execvp %s", argv[0]);
+			perror(" failed");
+		}
+		exit (0);
+	}
+	wait(0);
+}