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-rw-r--r--sys/geom/geom_gpt.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/sys/geom/geom_gpt.c b/sys/geom/geom_gpt.c
index 8e5b583..aa074ee 100644
--- a/sys/geom/geom_gpt.c
+++ b/sys/geom/geom_gpt.c
@@ -358,8 +358,8 @@ g_gpt_ctl_remove(struct gctl_req *req, const char *flags, struct g_geom *gp,
static int
g_gpt_has_pmbr(struct g_consumer *cp, int *error)
{
- struct dos_partition *part;
char *buf;
+ uint8_t *typ;
int i, pmbr;
uint16_t magic;
@@ -373,9 +373,10 @@ g_gpt_has_pmbr(struct g_consumer *cp, int *error)
if (magic != DOSMAGIC)
goto out;
- part = (struct dos_partition *)(uintptr_t)(buf + DOSPARTOFF);
for (i = 0; i < 4; i++) {
- if (part[i].dp_typ != 0 && part[i].dp_typ != DOSPTYP_PMBR)
+ typ = buf + DOSPARTOFF + i * sizeof(struct dos_partition) +
+ offsetof(struct dos_partition, dp_typ);
+ if (*typ != 0 && *typ != DOSPTYP_PMBR)
goto out;
}
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