- Fix a potential NULL pointer reference. Note that this should not happen in

  practice, but it is a good programming practice and allows the kernel to not
  depend on userland correctness.
- While there, make sizeof usage match the rest of the code.

Found with:	Coverity Prevent(tm)
CID:		660, 662

1 files changed, 17 insertions, 1 deletions

diff --git a/sys/geom/geom_ccd.c b/sys/geom/geom_ccd.c
index 75d7f0f..1659321 100644
--- a/sys/geom/geom_ccd.c
+++ b/sys/geom/geom_ccd.c
@@ -709,8 +709,20 @@ g_ccd_create(struct gctl_req *req, struct g_class *mp)
 
 	g_topology_assert();
 	unit = gctl_get_paraml(req, "unit", sizeof (*unit));
+	if (unit == NULL) {
+		gctl_error(req, "unit parameter not given");
+		return;
+	}
 	ileave = gctl_get_paraml(req, "ileave", sizeof (*ileave));
+	if (ileave == NULL) {
+		gctl_error(req, "ileave parameter not given");
+		return;
+	}
 	nprovider = gctl_get_paraml(req, "nprovider", sizeof (*nprovider));
+	if (nprovider == NULL) {
+		gctl_error(req, "nprovider parameter not given");
+		return;
+	}
 
 	/* Check for duplicate unit */
 	LIST_FOREACH(gp, &mp->geom, geom) {
@@ -838,7 +850,11 @@ g_ccd_list(struct gctl_req *req, struct g_class *mp)
 	struct g_geom *gp;
 	int i, unit, *up;
 
-	up = gctl_get_paraml(req, "unit", sizeof (int));
+	up = gctl_get_paraml(req, "unit", sizeof (*up));
+	if (up == NULL) {
+		gctl_error(req, "unit parameter not given");
+		return;
+	}
 	unit = *up;
 	sb = sbuf_new_auto();
 	LIST_FOREACH(gp, &mp->geom, geom) {