X-Git-Url: https://jasonwoof.com/gitweb/?a=blobdiff_plain;f=util.c;h=2414b394fc7a2fe81b5b3043ea1c937be7cb9e2d;hb=442334641e4124d8c32387287d431a83761ff916;hp=3553f5d3f01ab8ad5cb3d5861a1d6811238c834f;hpb=8a34fa50f75f4d6d8af234ac0c4f6d40b988d700;p=dwm.git

diff --git a/util.c b/util.c
index 3553f5d..2414b39 100644
--- a/util.c
+++ b/util.c
@@ -2,17 +2,73 @@
  * (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)
+{
+	eprint("fatal: could not malloc() %u bytes\n", size);
+}
+
+/* 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);
 	va_end(ap);
-	exit(1);
+	exit(EXIT_FAILURE);
+}
+
+void *
+erealloc(void *ptr, unsigned int size)
+{
+	void *res = realloc(ptr, size);
+	if(!res)
+		bad_malloc(size);
+	return res;
 }
 
+void
+spawn(Arg *arg)
+{
+	static char *shell = NULL;
+
+	if(!shell && !(shell = getenv("SHELL")))
+		shell = "/bin/sh";
+
+	if(!arg->cmd)
+		return;
+	if(fork() == 0) {
+		if(fork() == 0) {
+			if(dpy)
+				close(ConnectionNumber(dpy));
+			setsid();
+			execl(shell, shell, "-c", arg->cmd, NULL);
+			fprintf(stderr, "dwm: execl '%s -c %s'", shell, arg->cmd);
+			perror(" failed");
+		}
+		exit(0);
+	}
+	wait(0);
+}