/* $NetBSD: newdisk.c,v 1.11 2014/03/26 08:17:59 christos Exp $ */

/* $NetBSD: newdisk.c,v 1.11 2014/03/26 08:17:59 christos Exp $ */

/*-
* Copyright (c) 1999 Minoura Makoto
* 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.
*
* 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.
*/

/*
* Create the disk mark for x68k SCSI IPL.
* It used to be a shell/awk script, but is rewritten in order to be fit with
* the install kernel.
*
* Usage: /usr/mdec/newdisk [-vnfc] [-m /usr/mdec/mboot] /dev/rsd?c
*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <err.h>
#include <fcntl.h>
#include <unistd.h>
#include <util.h>
#include <sys/param.h>
#include <sys/disklabel.h>
#include <sys/dkio.h>
#include <sys/ioctl.h>

const char *mboot = MBOOT;
char dev[MAXPATHLEN];
char buf[4096 + 1];

const char copyright[] = "NetBSD/x68k SCSI Primary Boot. ";

int verbose = 0, dry_run = 0, force = 0, check_only = 0, mark_only = 0;

void usage(void) __attribute__((__noreturn__));
int main(int, char *[]);

void
usage(void)
{
fprintf(stderr,
"Usage: %s [-v] [-n] [-f] [-c] [-m /usr/mdec/mboot] "
"/dev/rsdXc\n", getprogname());
exit(1);
/* NOTREACHED */
}

int
main(int argc, char *argv[])
{
int ch;
int fd;
struct disklabel label;

while ((ch = getopt(argc, argv, "vnfcm:p")) != -1) {
switch (ch) {
case 'v':
verbose = 1;
break;
case 'n':
dry_run = 1;
break;
case 'f':
force = 1;
break;
case 'c':
check_only = 1;
break;
case 'm':
mboot = optarg;
break;
case 'p':
mark_only = 1;
break;
default:
usage();
}
}
argc -= optind;
argv += optind;

if (argc != 1)
usage();

fd = opendisk(argv[0], O_RDONLY, dev, MAXPATHLEN, 0);
if (fd < 0)
err(1, "opening %s", dev);
if (access(mboot, R_OK) < 0)
err(1, "checking %s", mboot);

if (read(fd, buf, 512) < 0)
err(1, "reading %s", dev);
if (strncmp(buf, "X68SCSI1", 8) == 0 && !force)
errx(1, "%s is already marked. "
"Use -f to overwrite the existing mark.", dev);
if (check_only)
return 0;

if (verbose)
fprintf(stderr, "Inspecting %s... ", dev);

if (ioctl(fd, DIOCGDINFO, &label) < 0)
err(1, "inspecting %s", dev);
close(fd);
if (label.d_secsize != 512)
errx(1, "This type of disk is not supported by NetBSD.");

if (verbose)
fprintf(stderr, "total number of sector is %d.\n",
label.d_secperunit);

if (verbose)
fprintf(stderr, "Building disk mark... ");
memset(buf, 0, 3072);
#define n label.d_secperunit
snprintf(buf, sizeof(buf), "X68SCSI1%c%c%c%c%c%c%c%c%s",
2, 0,
(n/16777216)%256, (n/65536)%256, (n/256)%256, n%256,
1, 0, copyright);
#undef n
if (verbose)
fprintf(stderr, "done.\n");

if (verbose)
fprintf(stderr, "Merging %s... ", mboot);
fd = open(mboot, O_RDONLY);
if (fd < 0)
err(1, "opening %s", mboot);
if (read(fd, buf+1024, 1024) < 0)
err(1, "reading %s", mboot);
close(fd);
if (verbose)
fprintf(stderr, "done.\n");

if (!mark_only) {
if (verbose)
fprintf(stderr,
"Creating an empty partition table... ");
#define n (label.d_secperunit/2)
snprintf(buf + 2048, sizeof(buf) - 2048,
"X68K%c%c%c%c%c%c%c%c%c%c%c%c",
0, 0, 0, 32,
(n/16777215)%256, (n/65536)%256, (n/256)%256, n%256,
(n/16777215)%256, (n/65536)%256, (n/256)%256, n%256);
#undef n
if (verbose)
fprintf(stderr, "done.\n");
}

if (dry_run) {
char filename[MAXPATHLEN] = "/tmp/diskmarkXXXXX";
fd = mkstemp(filename);
if (fd < 0)
err(1, "opening %s", filename);
if (write(fd, buf, 4096) < 0)
err(1, "writing %s", filename);
close(fd);
fprintf(stderr, "Disk mark is kept in %s.\n", filename);
} else {
int mode = 1;

if (verbose)
fprintf(stderr, "Writing... ");
fd = open(dev, O_WRONLY);
if (fd < 0)
err(1, "opening %s", dev);
if (ioctl(fd, DIOCWLABEL, (char *)&mode) < 0)
err(1, "DIOCWLABEL %s", dev);
if (write(fd, buf, 4096) != 4096) {
mode = 0;
ioctl(fd, DIOCWLABEL, (char *)&mode);
err(1, "DIOCWLABEL %s", dev);
}
ioctl(fd, DIOCWLABEL, (char *)&mode);
if (verbose)
fprintf(stderr, "done.\n");
close(fd);
}

return 0;
}