110 lines
2.5 KiB
C
110 lines
2.5 KiB
C
/*
|
|
* ----------------------------------------------------------------------------
|
|
* "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 <sys/diskslice.h>
|
|
#include <sys/diskmbr.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 */
|
|
static int
|
|
Write_FreeBSD(int fd, const struct disk *new, const struct disk *old, const struct chunk *c1)
|
|
{
|
|
struct disklabel *dl;
|
|
int i;
|
|
void *p;
|
|
u_char buf[BBSIZE];
|
|
u_long *lp, sum;
|
|
|
|
for(i = 0; i < BBSIZE/512; i++) {
|
|
p = read_block(fd, i + c1->offset, 512);
|
|
memcpy(buf + 512 * i, p, 512);
|
|
free(p);
|
|
}
|
|
if(new->boot1)
|
|
memcpy(buf + 512, new->boot1, BBSIZE-512);
|
|
|
|
dl = (struct disklabel *)(buf + 512 * LABELSECTOR + LABELOFFSET);
|
|
Fill_Disklabel(dl, new, old, c1);
|
|
|
|
/*
|
|
* Tell SRM where the bootstrap is.
|
|
*/
|
|
lp = (u_long *)buf;
|
|
lp[60] = 15;
|
|
lp[61] = 1;
|
|
lp[62] = 0;
|
|
|
|
/*
|
|
* Generate the bootblock checksum for the SRM console.
|
|
*/
|
|
for (lp = (u_long *)buf, i = 0, sum = 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);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
int
|
|
Write_Disk(const struct disk *d1)
|
|
{
|
|
int fd;
|
|
struct disk *old = 0;
|
|
struct chunk *c1;
|
|
int ret = 0;
|
|
char device[64];
|
|
u_char *mbr;
|
|
struct dos_partition *dp,work[NDOSPART];
|
|
int s[4];
|
|
|
|
strcpy(device,_PATH_DEV);
|
|
strcat(device,d1->name);
|
|
|
|
|
|
fd = open(device,O_RDWR);
|
|
if (fd < 0)
|
|
return 1;
|
|
|
|
memset(s,0,sizeof s);
|
|
mbr = read_block(fd, 0, d1->sector_size);
|
|
dp = (struct dos_partition*)(mbr + DOSPARTOFF);
|
|
memcpy(work, dp, sizeof work);
|
|
dp = work;
|
|
free(mbr);
|
|
for (c1 = d1->chunks->part->part; c1; c1 = c1->next) {
|
|
if (c1->type == unused) continue;
|
|
if (!strcmp(c1->name, "X")) continue;
|
|
if (c1->type == freebsd)
|
|
ret += Write_FreeBSD(fd, d1, old, c1);
|
|
|
|
}
|
|
|
|
close(fd);
|
|
return 0;
|
|
}
|