113 lines
2.8 KiB
C
113 lines
2.8 KiB
C
/*
|
|
* Copyright (c) 1994, Paul Richards.
|
|
*
|
|
* All rights reserved.
|
|
*
|
|
* This software may be used, modified, copied, distributed, and
|
|
* sold, in both source and binary form provided that the above
|
|
* copyright and these terms are retained, verbatim, as the first
|
|
* lines of this file. Under no circumstances is the author
|
|
* responsible for the proper functioning of this software, nor does
|
|
* the author assume any responsibility for damages incurred with
|
|
* its use.
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/disklabel.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/fcntl.h>
|
|
#include <sys/uio.h>
|
|
#include <unistd.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <dialog.h>
|
|
|
|
#include "mbr.h"
|
|
#include "sysinstall.h"
|
|
|
|
extern char *bootblocks;
|
|
extern struct mbr *mbr;
|
|
|
|
int
|
|
write_bootblocks(int fd, struct disklabel *lbl)
|
|
{
|
|
off_t of = lbl->d_partitions[OURPART].p_offset;
|
|
|
|
Debug("Seeking to byte %ld ", of * lbl->d_secsize);
|
|
if (lseek(fd, (of * lbl->d_secsize), SEEK_SET) < 0) {
|
|
Fatal("Couldn't seek to start of partition\n");
|
|
}
|
|
|
|
enable_label(fd);
|
|
|
|
if (write(fd, bootblocks, lbl->d_bbsize) != lbl->d_bbsize) {
|
|
Fatal("Failed to write bootblocks (%p,%d) %d %s\n",
|
|
bootblocks, lbl->d_bbsize,
|
|
errno, strerror(errno)
|
|
);
|
|
}
|
|
|
|
disable_label(fd);
|
|
|
|
return(0);
|
|
}
|
|
|
|
int
|
|
build_bootblocks(int dfd,struct disklabel *label,struct dos_partition *dospart)
|
|
{
|
|
int fd;
|
|
off_t of = label->d_partitions[OURPART].p_offset;
|
|
|
|
Debug("Loading boot code from %s", boot1);
|
|
|
|
fd = open(boot1, O_RDONLY);
|
|
if (fd < 0)
|
|
Fatal("Couldn't open boot file %s\n", boot1);
|
|
|
|
if (read(fd, bootblocks, MBRSIZE) < 0)
|
|
Fatal("Couldn't read from boot file %s\n", boot1);
|
|
|
|
if (close(fd) == -1)
|
|
Fatal("Couldn't close boot file %s\n", boot1);
|
|
|
|
Debug("Loading boot code from %s", boot2);
|
|
|
|
fd = open(boot2, O_RDONLY);
|
|
if (fd < 0)
|
|
Fatal("Couldn't open boot file %s", boot2);
|
|
|
|
if (read(fd, &bootblocks[MBRSIZE], (int)(label->d_bbsize - MBRSIZE)) < 0)
|
|
Fatal("Couldn't read from boot file %s\n", boot2);
|
|
|
|
if (close(fd) == -1)
|
|
Fatal("Couldn't close boot file %s", boot2);
|
|
|
|
bcopy(dospart, &bootblocks[DOSPARTOFF],
|
|
sizeof(struct dos_partition) * NDOSPART);
|
|
|
|
label->d_checksum = 0;
|
|
label->d_checksum = dkcksum(label);
|
|
bcopy(label, &bootblocks[(LABELSECTOR * label->d_secsize) + LABELOFFSET],
|
|
sizeof *label);
|
|
|
|
Debug("Seeking to byte %ld ", of * label->d_secsize);
|
|
|
|
if (lseek(dfd, (of * label->d_secsize), SEEK_SET) < 0) {
|
|
Fatal("Couldn't seek to start of partition\n");
|
|
}
|
|
|
|
enable_label(dfd);
|
|
|
|
if (write(dfd, bootblocks, label->d_bbsize) != label->d_bbsize) {
|
|
Fatal("Failed to write bootblocks (%p,%d) %d %s\n",
|
|
bootblocks, label->d_bbsize,
|
|
errno, strerror(errno)
|
|
);
|
|
}
|
|
|
|
disable_label(dfd);
|
|
|
|
return(0);
|
|
}
|