fixing missing extern declars in dwm.h for {de,at}tach()

[dwm.git] / util.c

diff --git a/util.c b/util.c
index 99842e9..b786480 100644 (file)
--- a/util.c
+++ b/util.c
@@ -1,77 +1,54 @@
-/*
- * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
+/* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>

  * See LICENSE file for license details.
  */
  * See LICENSE file for license details.
  */

-
+#include "dwm.h"

 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.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 *
 
 void *

-emallocz(unsigned int size)
-{
+emallocz(unsigned int size) {

        void *res = calloc(1, size);
        void *res = calloc(1, size);

-       if(!res)
-               bad_malloc(size);
-       return res;
-}

 
 

-void *
-emalloc(unsigned int size)
-{
-       void *res = malloc(size);

        if(!res)
        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
        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
 }
 
 void

-swap(void **p1, void **p2)
-{
-       void *tmp = *p1;
-       *p1 = *p2;
-       *p2 = tmp;
+spawn(Arg arg) {
+       static char *shell = NULL;
+
+       if(!shell && !(shell = getenv("SHELL")))
+               shell = "/bin/sh";
+       if(!arg.cmd)
+               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.cmd, (char *)NULL);
+                       fprintf(stderr, "dwm: execl '%s -c %s'", shell, arg.cmd);
+                       perror(" failed");
+               }
+               exit(0);
+       }
+       wait(0);

 }
 }