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/*
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* <phk@FreeBSD.org> wrote this file. As long as you retain this notice you
* can do whatever you want with this stuff. If we meet some day, and you think
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
* ----------------------------------------------------------------------------
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/disklabel.h>
#include <paths.h>
#include "libdisk.h"
/*
* XXX: A lot of hardcoded 512s probably should be foo->sector_size;
* I'm not sure which, so I leave it like it worked before. --schweikh
*/
int
Write_Disk(const struct disk *d1)
{
u_char buf[BBSIZE];
char device[64];
struct chunk *c1;
struct disklabel *dl;
void *p;
uint64_t *lp, sum;
int fd, i;
strcpy(device, _PATH_DEV);
strcat(device, d1->name);
fd = open(device, O_RDWR);
if (fd < 0)
return (1);
c1 = d1->chunks->part;
if (!strcmp(c1->name, "X") || c1->type != freebsd) {
close (fd);
return (0);
}
for (i = 0; i < BBSIZE/512; i++) {
p = read_block(fd, i + c1->offset, 512);
memcpy(buf + 512 * i, p, 512);
free(p);
}
if (d1->boot1)
memcpy(buf + 512, d1->boot1, BBSIZE - 512);
dl = (struct disklabel *)(buf + 512 * LABELSECTOR + LABELOFFSET);
Fill_Disklabel(dl, d1, c1);
/*
* Tell SRM where the bootstrap is.
*/
lp = (uint64_t *)buf;
lp[60] = (BBSIZE - 512) / 512; /* Length */
lp[61] = 1; /* Start */
lp[62] = 0; /* Flags */
/*
* Generate the bootblock checksum for the SRM console.
*/
sum = 0;
for (i = 0; i < 63; i++)
sum += lp[i];
lp[63] = sum;
for (i = 0; i < BBSIZE / 512; i++)
write_block(fd, i + c1->offset, buf + 512 * i, 512);
close(fd);
return (0);
}
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