-/*
- * (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.
*/
-
+#include "dwm.h"
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
-#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
-#include "dwm.h"
+/* extern */
+
+void *
+emallocz(unsigned int size) {
+ void *res = calloc(1, size);
+
+ if(!res)
+ eprint("fatal: could not malloc() %u bytes\n", size);
+ return res;
+}
void
eprint(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);
+ exit(EXIT_FAILURE);
}
void *
-emallocz(unsigned int size)
-{
- void *res = calloc(1, size);
+erealloc(void *ptr, unsigned int size) {
+ void *res = realloc(ptr, size);
+
if(!res)
- bad_malloc(size);
+ eprint("fatal: could not malloc() %u bytes\n", size);
return res;
}
void
-spawn(Arg *arg)
-{
- char **argv = (char **)arg->argv;
- if(!argv || !argv[0])
+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();
- execvp(argv[0], argv);
- fprintf(stderr, "dwm: execvp %s", argv[0]);
+ execl(shell, shell, "-c", arg->cmd, (char *)NULL);
+ fprintf(stderr, "dwm: execl '%s -c %s'", shell, arg->cmd);
perror(" failed");
}
- exit (0);
+ exit(0);
}
wait(0);
}