int
Xwrite(char *args, struct disk *disk, struct mbr *mbr, struct mbr *tt,
int offset)
{
struct dos_mbr dos_mbr;
int fd, i, n;
for (i = 0, n = 0; i < NDOSPART; i++)
if (mbr->part[i].id == 0xA6)
n++;
if (n >= 2) {
warnx("MBR contains more than one OpenBSD partition!");
if (!ask_yn("Write MBR anyway?"))
return (CMD_CONT);
}
fd = DISK_open(disk->name, O_RDWR);
MBR_make(mbr, &dos_mbr);
printf("Writing MBR at offset %d.\n", offset);
if (MBR_write(fd, offset, &dos_mbr) == -1) {
int saved_errno = errno;
warn("error writing MBR");
close(fd);
errno = saved_errno;
return (CMD_CONT);
}
close(fd);
/* Refresh in memory copy to reflect what was just written. */
MBR_parse(disk, &dos_mbr, mbr->offset, mbr->reloffset, mbr);
return (CMD_CLEAN);
}
int
Xreinit(cmd_t *cmd, disk_t *disk, mbr_t *mbr, mbr_t *tt, int offset)
{
char buf[DEV_BSIZE];
/* Copy template MBR */
MBR_make(tt, buf);
MBR_parse(disk, buf, mbr->offset, mbr->reloffset, mbr);
MBR_init(disk, mbr);
/* Tell em we did something */
printf("In memory copy is initialized to:\n");
printf("Offset: %d\t", offset);
MBR_print(mbr, cmd->args);
printf("Use 'write' to update disk.\n");
return (CMD_DIRTY);
}
int
Xreinit(char *args, struct disk *disk, struct mbr *mbr, struct mbr *tt,
int offset)
{
struct dos_mbr dos_mbr;
/* Copy template MBR */
MBR_make(tt, &dos_mbr);
MBR_parse(disk, &dos_mbr, mbr->offset, mbr->reloffset, mbr);
MBR_init(disk, mbr);
/* Tell em we did something */
printf("In memory copy is initialized to:\n");
printf("Offset: %d\t", offset);
MBR_print(mbr, args);
printf("Use 'write' to update disk.\n");
return (CMD_DIRTY);
}