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| author | marcel <marcel@FreeBSD.org> | 2009-03-30 00:48:42 +0000 |
|---|---|---|
| committer | marcel <marcel@FreeBSD.org> | 2009-03-30 00:48:42 +0000 |
| commit | 5f1a50b47c3e1177f3ae625df08af3f4b3667233 (patch) | |
| tree | c6efe2a8b8e61a64a6b6dfd57a32900d459a1a30 /sys/geom | |
| parent | bfa8e2dd6f0aaaf53628020b2410c56ddc574d1c (diff) | |
| download | FreeBSD-src-5f1a50b47c3e1177f3ae625df08af3f4b3667233.zip FreeBSD-src-5f1a50b47c3e1177f3ae625df08af3f4b3667233.tar.gz | |
Sharpen the saw:
o EBR uses 32-bit block numbers. Limit the scheme to 2^32-1
blocks when the media is larger.
o Calculate the number of entries based on the rounded media
size, rather than the raw media size.
Diffstat (limited to 'sys/geom')
| -rw-r--r-- | sys/geom/part/g_part_ebr.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/sys/geom/part/g_part_ebr.c b/sys/geom/part/g_part_ebr.c index 80e5ef2..82b728d 100644 --- a/sys/geom/part/g_part_ebr.c +++ b/sys/geom/part/g_part_ebr.c @@ -237,7 +237,7 @@ g_part_ebr_create(struct g_part_table *basetable, struct g_part_parms *gpp) char psn[8]; struct g_consumer *cp; struct g_provider *pp; - uint64_t msize; + uint32_t msize; int error; pp = gpp->gpp_provider; @@ -257,10 +257,11 @@ g_part_ebr_create(struct g_part_table *basetable, struct g_part_parms *gpp) if (strcmp(psn, "MBR")) return (ENXIO); - msize = pp->mediasize / pp->sectorsize; - basetable->gpt_entries = msize / basetable->gpt_sectors; + msize = MIN(pp->mediasize / pp->sectorsize, 0xffffffff); + msize -= msize % basetable->gpt_sectors; basetable->gpt_first = 0; - basetable->gpt_last = msize - (msize % basetable->gpt_sectors) - 1; + basetable->gpt_last = msize - 1; + basetable->gpt_entries = msize / basetable->gpt_sectors; return (0); } |
