-/*
- * (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 <string.h>
-
-void
-error(char *errstr, ...) {
- va_list ap;
- va_start(ap, errstr);
- vfprintf(stderr, errstr, ap);
- va_end(ap);
- exit(1);
-}
+#include <sys/wait.h>
+#include <unistd.h>
-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);
- return res;
-}
-
-void *
-erealloc(void *ptr, unsigned int size)
-{
- void *res = realloc(ptr, size);
- if(!res)
- bad_malloc(size);
- return res;
-}
-
-char *
-estrdup(const char *str)
-{
- void *res = strdup(str);
- if(!res)
- bad_malloc(strlen(str));
+ eprint("fatal: could not malloc() %u bytes\n", size);
return res;
}
void
-failed_assert(char *a, char *file, int line)
-{
- fprintf(stderr, "Assertion \"%s\" failed at %s:%d\n", a, file, line);
- abort();
+eprint(const char *errstr, ...) {
+ va_list ap;
+
+ 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;
+
+ 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();
+ execl(shell, shell, "-c", arg, (char *)NULL);
+ fprintf(stderr, "dwm: execl '%s -c %s'", shell, arg);
+ perror(" failed");
+ }
+ exit(0);
+ }
+ wait(0);
}