-/*
- * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
- * See LICENSE file for license details.
- */
-
+/* © 2006-2007 Anselm R. Garbe <garbeam at gmail dot com>
+ * © 2006-2007 Sander van Dijk <a dot h dot vandijk at gmail dot com>
+ * © 2006-2007 Jukka Salmi <jukka at salmi dot ch>
+ * © 2007 Premysl Hruby <dfenze at gmail dot com>
+ * © 2007 Szabolcs Nagy <nszabolcs 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 "util.h"
-
-static char *shell = NULL;
-
-void
-error(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);
- 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;
-void
-swap(void **p1, void **p2)
-{
- void *tmp = *p1;
- *p1 = *p2;
- *p2 = tmp;
+ va_start(ap, errstr);
+ vfprintf(stderr, errstr, ap);
+ va_end(ap);
+ exit(EXIT_FAILURE);
}
void
-spawn(Display *dpy, const char *cmd)
-{
+spawn(const char *arg) {
+ static char *shell = NULL;
+
if(!shell && !(shell = getenv("SHELL")))
shell = "/bin/sh";
-
- if(!cmd)
+ 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) {
- setsid();
if(dpy)
close(ConnectionNumber(dpy));
- execlp(shell, "shell", "-c", cmd, NULL);
- fprintf(stderr, "gridwm: execvp %s", cmd);
+ setsid();
+ execl(shell, shell, "-c", arg, (char *)NULL);
+ fprintf(stderr, "dwm: execl '%s -c %s'", shell, arg);
perror(" failed");
}
- exit (0);
- }
- wait(0);
-}
-
-void
-pipe_spawn(char *buf, unsigned int len, Display *dpy, const char *cmd)
-{
- unsigned int l, n;
- int pfd[2];
-
- if(!shell && !(shell = getenv("SHELL")))
- shell = "/bin/sh";
-
- if(!cmd)
- return;
-
- if(pipe(pfd) == -1) {
- perror("pipe");
- exit(1);
- }
-
- if(fork() == 0) {
- setsid();
- if(dpy)
- close(ConnectionNumber(dpy));
- dup2(pfd[1], STDOUT_FILENO);
- close(pfd[0]);
- close(pfd[1]);
- execlp(shell, "shell", "-c", cmd, NULL);
- fprintf(stderr, "gridwm: execvp %s", cmd);
- perror(" failed");
- }
- else {
- n = 0;
- close(pfd[1]);
- while(l > n) {
- if((l = read(pfd[0], buf + n, len - n)) < 1)
- break;
- n += l;
- }
- close(pfd[0]);
- buf[n - 1] = 0;
+ exit(0);
}
wait(0);
}