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Only allow for unloading when there are no geoms in LABEL GEOM class.

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We have to use our own destroy_geom method, because default one, which
is a part of geom_slice is broken.
MT5 candidate.

PR:		kern/72467
Submitted by:	Vladimir Novoseltsev
This commit is contained in:
Pawel Jakub Dawidek 2004-10-14 07:46:13 +00:00
parent 6eaa08deba
commit 268111a210
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=136503
1 changed files with 16 additions and 1 deletions
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17
sys/geom/label/g_label.c
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@ -48,6 +48,8 @@ TUNABLE_INT("kern.geom.label.debug", &g_label_debug);
SYSCTL_UINT(_kern_geom_label, OID_AUTO, debug, CTLFLAG_RW, &g_label_debug, 0,
"Debug level");
static int g_label_destroy_geom(struct gctl_req *req, struct g_class *mp,
struct g_geom *gp);
static int g_label_destroy(struct g_geom *gp, boolean_t force);
static struct g_geom *g_label_taste(struct g_class *mp, struct g_provider *pp,
int flags __unused);
@ -58,7 +60,8 @@ struct g_class g_label_class = {
.name = G_LABEL_CLASS_NAME,
.version = G_VERSION,
.ctlreq = g_label_config,
.taste = g_label_taste
.taste = g_label_taste,
.destroy_geom = g_label_destroy_geom
};
/*
@ -76,6 +79,18 @@ const struct g_label_desc *g_labels[] = {
};
static int
g_label_destroy_geom(struct gctl_req *req __unused, struct g_class *mp,
struct g_geom *gp __unused)
{
/*
* XXX: Unloading a class which is using geom_slice:1.56 is currently
* XXX: broken, so we deny unloading when we have geoms.
*/
return (EOPNOTSUPP);
}
static void
g_label_orphan(struct g_consumer *cp __unused)
{