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/* $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);
}
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