/* $NetBSD: rdconfig.c,v 1.1.1.1 1995/10/08 22:40:41 gwr Exp $ */ /* * Copyright (c) 1995 Gordon W. Ross * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * 4. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Gordon W. Ross * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* * This program exists for the sole purpose of providing * user-space memory for the new RAM-disk driver (rd). * The job done by this is similar to mount_mfs. * (But this design allows any filesystem format!) */ #include <fcntl.h> #include <stdio.h> #include <stdlib.h> #include <sys/mman.h> #include <sys/param.h> #include <sys/ioctl.h> #include <dev/ramdisk.h> int main(int argc, char *argv[]) { struct rd_conf rd; int nblks, fd; if (argc <= 2) { fprintf(stderr, "usage: rdconfig <device> <%d-byte-blocks>\n", DEV_BSIZE); exit(1); } nblks = atoi(argv[2]); if (nblks <= 0) { fprintf(stderr, "invalid number of blocks\n"); exit(1); } rd.rd_size = nblks << DEV_BSHIFT; fd = open(argv[1], O_RDWR, 0); if (fd < 0) { perror(argv[1]); exit(1); } rd.rd_addr = mmap(NULL, rd.rd_size, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, -1, 0); if (rd.rd_addr == MAP_FAILED) { perror("mmap"); exit(1); } /* Become server! */ rd.rd_type = RD_UMEM_SERVER; if (ioctl(fd, RD_SETCONF, &rd)) { perror("ioctl"); exit(1); } exit(0); }