diff options
Diffstat (limited to 'sbin/gpt/create.c')
| -rw-r--r-- | sbin/gpt/create.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/sbin/gpt/create.c b/sbin/gpt/create.c index ec2b121..e9ac8ce 100644 --- a/sbin/gpt/create.c +++ b/sbin/gpt/create.c @@ -58,6 +58,7 @@ create(int fd) map_t *gpt, *tpg; map_t *tbl, *lbt; map_t *map; + struct mbr *mbr; struct gpt_hdr *hdr; struct gpt_ent *ent; unsigned int i; @@ -67,6 +68,40 @@ create(int fd) warnx("%s: error: device already contains a GPT", device_name); return; } + if (map_find(MAP_TYPE_MBR) != NULL) { + warnx("%s: error: device contains a MBR", device_name); + return; + } + + /* + * Create PMBR. + */ + if (map_find(MAP_TYPE_PMBR) == NULL) { + if (map_free(0LL, 1LL) == 0) { + warnx("%s: error: no room for the PMBR", device_name); + return; + } + mbr = gpt_read(fd, 0LL, 1); + bzero(mbr, sizeof(*mbr)); + mbr->mbr_sig = MBR_SIG; + mbr->mbr_part[0].part_shd = 0xff; + mbr->mbr_part[0].part_ssect = 0xff; + mbr->mbr_part[0].part_scyl = 0xff; + mbr->mbr_part[0].part_typ = 0xee; + mbr->mbr_part[0].part_ehd = 0xff; + mbr->mbr_part[0].part_esect = 0xff; + mbr->mbr_part[0].part_ecyl = 0xff; + mbr->mbr_part[0].part_start_lo = 1; + if (mediasz > 0xffffffff) { + mbr->mbr_part[0].part_size_lo = 0xffff; + mbr->mbr_part[0].part_size_hi = 0xffff; + } else { + mbr->mbr_part[0].part_size_lo = mediasz & 0xffff; + mbr->mbr_part[0].part_size_hi = mediasz >> 16; + } + map = map_add(0LL, 1LL, MAP_TYPE_PMBR, mbr); + gpt_write(fd, map); + } /* Get the amount of free space after the MBR */ blocks = map_free(1LL, 0LL); |
