static int
xbsd_readlabel (struct partition *p, struct xbsd_disklabel *d)
{
int t, sector;
#if !defined (__alpha__)
sector = (p ? get_start_sect(p) : 0);
#elif defined (__alpha__)
sector = 0;
#endif
if (ext2_llseek (fd, (ext2_loff_t) sector * SECTOR_SIZE, SEEK_SET) == -1)
fatal (unable_to_seek);
if (BSD_BBSIZE != read (fd, disklabelbuffer, BSD_BBSIZE))
fatal (unable_to_read);
bcopy (&disklabelbuffer[BSD_LABELSECTOR * SECTOR_SIZE + BSD_LABELOFFSET],
d, sizeof (struct xbsd_disklabel));
for (t = d -> d_npartitions; t < BSD_MAXPARTITIONS; t++)
{
d -> d_partitions[t].p_size = 0;
d -> d_partitions[t].p_offset = 0;
d -> d_partitions[t].p_fstype = BSD_FS_UNUSED;
}
if (d -> d_magic != BSD_DISKMAGIC || d -> d_magic2 != BSD_DISKMAGIC)
return 0;
if (d -> d_npartitions > BSD_MAXPARTITIONS)
fprintf (stderr, _("Warning: too many partitions (%d, maximum is %d).\n"),
d -> d_npartitions, BSD_MAXPARTITIONS);
return 1;
}
static int valid_offset (int fd, ext2_loff_t offset)
{
char ch;
if (ext2_llseek (fd, offset, 0) < 0)
return 0;
if (read (fd, &ch, 1) < 1)
return 0;
return 1;
}
static int
xbsd_writelabel (struct partition *p, struct xbsd_disklabel *d)
{
int sector;
#if !defined (__alpha__) && !defined (__powerpc__)
sector = get_start_sect(p) + BSD_LABELSECTOR;
#elif defined (__alpha__) || defined (__powerpc__)
sector = BSD_LABELSECTOR;
#endif
d -> d_checksum = 0;
d -> d_checksum = xbsd_dkcksum (d);
/* This is necessary if we want to write the bootstrap later,
otherwise we'd write the old disklabel with the bootstrap.
*/
bcopy (d, &disklabelbuffer[BSD_LABELSECTOR * SECTOR_SIZE + BSD_LABELOFFSET],
sizeof (struct xbsd_disklabel));
#if defined (__alpha__) && BSD_LABELSECTOR == 0
alpha_bootblock_checksum (disklabelbuffer);
if (ext2_llseek (fd, (ext2_loff_t) 0, SEEK_SET) == -1)
fatal (unable_to_seek);
if (BSD_BBSIZE != write (fd, disklabelbuffer, BSD_BBSIZE))
fatal (unable_to_write);
#else
if (ext2_llseek (fd, (ext2_loff_t) sector * SECTOR_SIZE + BSD_LABELOFFSET,
SEEK_SET) == -1)
fatal (unable_to_seek);
if (sizeof (struct xbsd_disklabel) != write (fd, d, sizeof (struct xbsd_disklabel)))
fatal (unable_to_write);
#endif
sync_disks ();
return 1;
}
static void
xbsd_write_bootstrap (void)
{
char *bootdir = BSD_LINUX_BOOTDIR;
char path[MAXPATHLEN];
char *dkbasename;
struct xbsd_disklabel dl;
char *d, *p, *e;
int sector;
if (xbsd_dlabel.d_type == BSD_DTYPE_SCSI)
dkbasename = "sd";
else
dkbasename = "wd";
printf (_("Bootstrap: %sboot -> boot%s (%s): "), dkbasename, dkbasename, dkbasename);
if (read_line ())
{
line_ptr[strlen (line_ptr)-1] = '\0';
dkbasename = line_ptr;
}
sprintf (path, "%s/%sboot", bootdir, dkbasename);
if (!xbsd_get_bootstrap (path, disklabelbuffer, (int) xbsd_dlabel.d_secsize))
return;
/* We need a backup of the disklabel (xbsd_dlabel might have changed). */
d = &disklabelbuffer[BSD_LABELSECTOR * SECTOR_SIZE];
bcopy (d, &dl, sizeof (struct xbsd_disklabel));
/* The disklabel will be overwritten by 0's from bootxx anyway */
bzero (d, sizeof (struct xbsd_disklabel));
sprintf (path, "%s/boot%s", bootdir, dkbasename);
if (!xbsd_get_bootstrap (path, &disklabelbuffer[xbsd_dlabel.d_secsize],
(int) xbsd_dlabel.d_bbsize - xbsd_dlabel.d_secsize))
return;
e = d + sizeof (struct xbsd_disklabel);
for (p=d; p < e; p++)
if (*p)
{
fprintf (stderr, _("Bootstrap overlaps with disk label!\n"));
exit ( EXIT_FAILURE );
}
bcopy (&dl, d, sizeof (struct xbsd_disklabel));
#if defined (__powerpc__)
sector = 0;
#elif defined (__alpha__)
sector = 0;
alpha_bootblock_checksum (disklabelbuffer);
#else
sector = get_start_sect(xbsd_part);
#endif
if (ext2_llseek (fd, (ext2_loff_t) sector * SECTOR_SIZE, SEEK_SET) == -1)
fatal (unable_to_seek);
if (BSD_BBSIZE != write (fd, disklabelbuffer, BSD_BBSIZE))
fatal (unable_to_write);
#if defined (__alpha__)
printf (_("Bootstrap installed on %s.\n"), disk_device);
#else
printf (_("Bootstrap installed on %s.\n"),
partname (disk_device, xbsd_part_index+1, 0));
#endif
sync_disks ();
}
