util.c
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/* * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com> * See LICENSE file for license details. */ #include <stdarg.h> #include <stdio.h> #include <stdlib.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); } void * emallocz(unsigned int size) { void *res = calloc(1, size); if(!res) bad_malloc(size); return res; } void spawn(Arg *arg) { char **argv = (char **)arg->argv; if(!argv || !argv[0]) return; if(fork() == 0) { if(fork() == 0) { if(dpy) close(ConnectionNumber(dpy)); setsid(); execvp(argv[0], argv); fprintf(stderr, "dwm: execvp %s", argv[0]); perror(" failed"); } exit (0); } wait(0); }