void
display(FILE *f, struct disklabel *lp, char unit, int all)
{
int i, j;
double d;
unit = canonical_unit(lp, unit);
fprintf(f, "# %s:\n", specname);
if (lp->d_type < DKMAXTYPES)
fprintf(f, "type: %s\n", dktypenames[lp->d_type]);
else
fprintf(f, "type: %d\n", lp->d_type);
fprintf(f, "disk: %.*s\n", (int)sizeof(lp->d_typename),
lp->d_typename);
fprintf(f, "label: %.*s\n", (int)sizeof(lp->d_packname),
lp->d_packname);
fprintf(f, "duid: %02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx\n",
lp->d_uid[0], lp->d_uid[1], lp->d_uid[2], lp->d_uid[3],
lp->d_uid[4], lp->d_uid[5], lp->d_uid[6], lp->d_uid[7]);
fprintf(f, "flags:");
if (lp->d_flags & D_BADSECT)
fprintf(f, " badsect");
if (lp->d_flags & D_VENDOR)
fprintf(f, " vendor");
putc('\n', f);
fprintf(f, "bytes/sector: %u\n", lp->d_secsize);
fprintf(f, "sectors/track: %u\n", lp->d_nsectors);
fprintf(f, "tracks/cylinder: %u\n", lp->d_ntracks);
fprintf(f, "sectors/cylinder: %u\n", lp->d_secpercyl);
fprintf(f, "cylinders: %u\n", lp->d_ncylinders);
fprintf(f, "total sectors: %llu", DL_GETDSIZE(lp));
d = scale(DL_GETDSIZE(lp), unit, lp);
if (d > 0)
fprintf(f, " # total bytes: %.*f%c", unit == 'B' ? 0 : 1,
d, unit);
fprintf(f, "\n");
fprintf(f, "boundstart: %llu\n", DL_GETBSTART(lp));
fprintf(f, "boundend: %llu\n", DL_GETBEND(lp));
fprintf(f, "drivedata: ");
for (i = NDDATA - 1; i >= 0; i--)
if (lp->d_drivedata[i])
break;
if (i < 0)
i = 0;
for (j = 0; j <= i; j++)
fprintf(f, "%d ", lp->d_drivedata[j]);
fprintf(f, "\n");
if (all) {
fprintf(f, "\n%hu partitions:\n", lp->d_npartitions);
fprintf(f, "# %16.16s %16.16s fstype [fsize bsize cpg]\n",
"size", "offset");
for (i = 0; i < lp->d_npartitions; i++)
display_partition(f, lp, i, unit);
}
fflush(f);
}
int
edit(struct disklabel *lp, int f)
{
int first, ch, fd, error = 0;
struct disklabel label;
FILE *fp;
u_int64_t total_sectors, starting_sector, ending_sector;
if ((fd = mkstemp(tmpfil)) == -1 || (fp = fdopen(fd, "w")) == NULL) {
if (fd != -1)
close(fd);
warn("%s", tmpfil);
return (1);
}
display(fp, lp, 0, 1);
fprintf(fp, "\n# Notes:\n");
fprintf(fp,
"# Up to 16 partitions are valid, named from 'a' to 'p'. Partition 'a' is\n"
"# your root filesystem, 'b' is your swap, and 'c' should cover your whole\n"
"# disk. Any other partition is free for any use. 'size' and 'offset' are\n"
"# in 512-byte blocks. fstype should be '4.2BSD', 'swap', or 'none' or some\n"
"# other values. fsize/bsize/cpg should typically be '2048 16384 16' for a\n"
"# 4.2BSD filesystem (or '512 4096 16' except on alpha, sun4, ...)\n");
fclose(fp);
for (;;) {
if (editit(tmpfil) == -1)
break;
fp = fopen(tmpfil, "r");
if (fp == NULL) {
warn("%s", tmpfil);
break;
}
/* Get values set by OS and not the label. */
if (ioctl(f, DIOCGPDINFO, &label) < 0)
err(4, "ioctl DIOCGPDINFO");
ending_sector = DL_GETBEND(&label);
starting_sector = DL_GETBSTART(&label);
total_sectors = DL_GETDSIZE(&label);
memset(&label, 0, sizeof(label));
error = getasciilabel(fp, &label);
DL_SETBEND(&label, ending_sector);
DL_SETBSTART(&label, starting_sector);
DL_SETDSIZE(&label, total_sectors);
if (error == 0) {
if (cmplabel(lp, &label) == 0) {
puts("No changes.");
fclose(fp);
(void) unlink(tmpfil);
return (0);
}
*lp = label;
if (writelabel(f, bootarea, lp) == 0) {
fclose(fp);
(void) unlink(tmpfil);
return (0);
}
}
fclose(fp);
printf("re-edit the label? [y]: ");
fflush(stdout);
first = ch = getchar();
while (ch != '\n' && ch != EOF)
ch = getchar();
if (first == 'n' || first == 'N')
break;
}
(void)unlink(tmpfil);
return (1);
}
/*
* Search for a VDM "label" (which does not describe any partition).
* If one is found, search for either a VDIT label, or a native OpenBSD
* label in the first sector.
*/
int
readvdmlabel(struct buf *bp, void (*strat)(struct buf *), struct disklabel *lp,
daddr_t *partoffp, int spoofonly)
{
struct vdm_label *vdl;
struct vdm_boot_info *vbi;
int error = 0;
/*
* Read first sector and check for a VDM label.
* Note that a VDM label is only required for bootable disks, and
* may not be followed by a VDIT.
*/
error = readdisksector(bp, strat, lp, DL_BLKTOSEC(lp,
VDM_LABEL_SECTOR));
if (error)
return (error);
vdl = (struct vdm_label *)(bp->b_data + VDM_LABEL_OFFSET);
if (vdl->signature != VDM_LABEL_SIGNATURE)
vdl = (struct vdm_label *)(bp->b_data + VDM_LABEL_OFFSET_ALT);
if (vdl->signature != VDM_LABEL_SIGNATURE)
return EINVAL;
/*
* If the disk is a bootable disk, remember the boot block area, to
* be able to check that the VDIT does not overwrite it.
*/
vbi = (struct vdm_boot_info *)(bp->b_data + dbtob(1) - sizeof *vbi);
if (vbi->signature != VDM_LABEL_SIGNATURE || vbi->boot_start == 0)
vbi = NULL;
if (vbi != NULL && vbi->boot_start == VDIT_SECTOR)
return EINVAL;
if (vbi != NULL && vbi->boot_start + vbi->boot_size > DL_GETBSTART(lp))
DL_SETBSTART(lp, vbi->boot_start + vbi->boot_size);
error = readvditlabel(bp, strat, lp, partoffp, spoofonly, vbi);
if (error == 0)
return 0;
/*
* Valid VDIT information, but no OpenBSD vdmpart found.
* Do not try to read a native label.
*/
if (error == ENOENT)
return error;
if (partoffp != NULL)
*partoffp = 0;
/* don't read the on-disk label if we are in spoofed-only mode */
if (spoofonly != 0)
return 0;
error = readdisksector(bp, strat, lp, DL_BLKTOSEC(lp, LABELSECTOR));
if (error)
return (error);
return checkdisklabel(bp->b_data + LABELOFFSET, lp,
DL_GETBSTART(lp), DL_GETBEND(lp));
}
int
readsgilabel(struct buf *bp, void (*strat)(struct buf *),
struct disklabel *lp, daddr_t *partoffp, int spoofonly)
{
struct sgilabel *dlp;
int i, *p, cs = 0;
daddr_t fsoffs, fsend;
int error, offset;
/* if successful, locate disk label within block and validate */
error = readdisksector(bp, strat, lp, 0);
if (error)
return (error);
fsoffs = DL_SECTOBLK(lp, DL_GETBSTART(lp));
fsend = DL_SECTOBLK(lp, DL_GETBEND(lp));
dlp = (struct sgilabel *)(bp->b_data + LABELOFFSET);
if (dlp->magic != htobe32(SGILABEL_MAGIC))
goto finished;
if (dlp->partitions[0].blocks == 0)
return (EINVAL);
fsoffs = (long long)dlp->partitions[0].first;
fsend = fsoffs + dlp->partitions[0].blocks;
/* Only came here to find the offset... */
if (partoffp) {
*partoffp = fsoffs;
goto finished;
}
p = (int *)dlp;
i = sizeof(struct sgilabel) / sizeof(int);
while (i--)
cs += *p++;
if (cs != 0)
return (EINVAL); /* sgilabel checksum error */
/* Spoof info from sgi label, in case there is no OpenBSD label. */
lp->d_npartitions = MAXPARTITIONS;
for (i = 0; i < 16; i++) {
int bsd = maptab[i].m;
int type = maptab[i].b;
if (spoofonly && type != FS_UNUSED && type != FS_OTHER)
continue;
DL_SETPOFFSET(&lp->d_partitions[bsd],
dlp->partitions[i].first);
DL_SETPSIZE(&lp->d_partitions[bsd],
dlp->partitions[i].blocks);
lp->d_partitions[bsd].p_fstype = type;
if (type == FS_BSDFFS) {
lp->d_partitions[bsd].p_fragblock =
DISKLABELV1_FFS_FRAGBLOCK(1024, 8);
lp->d_partitions[bsd].p_cpg = 16;
}
}
DL_SETBSTART(lp, DL_BLKTOSEC(lp, fsoffs));
DL_SETBEND(lp, DL_BLKTOSEC(lp, fsend));
lp->d_version = 1;
lp->d_flags = D_VENDOR;
lp->d_checksum = 0;
lp->d_checksum = dkcksum(lp);
finished:
/* record the OpenBSD partition's placement for the caller */
if (partoffp)
*partoffp = fsoffs;
else {
DL_SETBSTART(lp, DL_BLKTOSEC(lp, fsoffs));
DL_SETBEND(lp, DL_BLKTOSEC(lp, fsend));
}
/* don't read the on-disk label if we are in spoofed-only mode */
if (spoofonly)
return (0);
error = readdisksector(bp, strat, lp, DL_BLKTOSEC(lp, fsoffs +
LABELSECTOR));
if (error)
return (error);
offset = DL_BLKOFFSET(lp, fsoffs + LABELSECTOR) + LABELOFFSET;
/*
* Do OpenBSD disklabel validation/adjustment.
*
* N.B: No matter what the bits are on the disk, we now have the
* OpenBSD disklabel for this sgi disk. DO NOT proceed to
* readdoslabel(), iso_spooflabel(), etc.
*/
checkdisklabel(bp->b_data + offset, lp, fsoffs, fsend);
return (0);
}
