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Catch up with the BSD label changes. The partition offsets are relative

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to the partition now. While here, make sure we skip unused partition
entries.
This commit is contained in:
Marcel Moolenaar 2004-10-25 03:27:31 +00:00
parent 7199d81ac9
commit e80c38cd22
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=136934
1 changed files with 20 additions and 3 deletions
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23
sbin/gpt/migrate.c
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@ -67,6 +67,7 @@ migrate_disklabel(int fd, off_t start, struct gpt_ent *ent)
{
char *buf;
struct disklabel *dl;
off_t ofs, rawofs;
int i;
buf = gpt_read(fd, start + LABELSECTOR, 1);
@ -79,8 +80,22 @@ migrate_disklabel(int fd, off_t start, struct gpt_ent *ent)
return (ent);
}
rawofs = le32toh(dl->d_partitions[RAW_PART].p_offset) *
le32toh(dl->d_secsize);
for (i = 0; i < le16toh(dl->d_npartitions); i++) {
if (dl->d_partitions[i].p_fstype == FS_UNUSED)
continue;
ofs = le32toh(dl->d_partitions[i].p_offset) *
le32toh(dl->d_secsize);
if (ofs < rawofs)
rawofs = 0;
}
rawofs /= secsz;
for (i = 0; i < le16toh(dl->d_npartitions); i++) {
switch (dl->d_partitions[i].p_fstype) {
case FS_UNUSED:
continue;
case FS_SWAP: {
uuid_t swap = GPT_ENT_TYPE_FREEBSD_SWAP;
le_uuid_enc(&ent->ent_type, &swap);
@ -108,9 +123,11 @@ migrate_disklabel(int fd, off_t start, struct gpt_ent *ent)
continue;
}
ent->ent_lba_start =
htole64(le32toh(dl->d_partitions[i].p_offset));
ent->ent_lba_end = htole64(le64toh(ent->ent_lba_start) +
ofs = (le32toh(dl->d_partitions[i].p_offset) *
le32toh(dl->d_secsize)) / secsz;
ofs = (ofs > 0) ? ofs - rawofs : 0;
ent->ent_lba_start = htole64(start + ofs);
ent->ent_lba_end = htole64(start + ofs +
le32toh(dl->d_partitions[i].p_size) - 1LL);
ent++;
}