X-Git-Url: https://jasonwoof.com/gitweb/?p=dwm.git;a=blobdiff_plain;f=util.c;h=cae9ba3508dddd753685c24a2053cdd49ef19e85;hp=d8e661256ee38f37a6a6adc41462d95395263a89;hb=399993c6b5d594278bf822e2981ebfe8bfcb58c7;hpb=c47da143bdf5b4e3924a411f42648d4b3e86ff00

diff --git a/util.c b/util.c
index d8e6612..cae9ba3 100644
--- a/util.c
+++ b/util.c
@@ -1,95 +1,53 @@
-/*
- * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
- * See LICENSE file for license details.
- */
-
+/* © 2004-2007 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 <string.h>
-#include <sys/types.h>
 #include <sys/wait.h>
 #include <unistd.h>
 
-#include "dwm.h"
-
-void
-error(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);
-}
+/* extern */
 
 void *
-emallocz(unsigned int size)
-{
+emallocz(unsigned int size) {
 	void *res = calloc(1, size);
-	if(!res)
-		bad_malloc(size);
-	return res;
-}
 
-void *
-emalloc(unsigned int size)
-{
-	void *res = malloc(size);
 	if(!res)
-		bad_malloc(size);
+		eprint("fatal: could not malloc() %u bytes\n", size);
 	return res;
 }
 
-void *
-erealloc(void *ptr, unsigned int size)
-{
-	void *res = realloc(ptr, size);
-	if(!res)
-		bad_malloc(size);
-	return res;
-}
+void
+eprint(const char *errstr, ...) {
+	va_list ap;
 
-char *
-estrdup(const char *str)
-{
-	char *res = strdup(str);
-	if(!res)
-		bad_malloc(strlen(str));
-	return res;
+	va_start(ap, errstr);
+	vfprintf(stderr, errstr, ap);
+	va_end(ap);
+	exit(EXIT_FAILURE);
 }
 
 void
-swap(void **p1, void **p2)
-{
-	void *tmp = *p1;
-	*p1 = *p2;
-	*p2 = tmp;
-}
+spawn(const char *arg) {
+	static char *shell = NULL;
 
-void
-spawn(Arg *arg)
-{
-	char **argv = (char **)arg->argv;
-	if(!argv || !argv[0])
+	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);
 }