sector_t *highs;
struct dm_target *targets;
+ struct target_type *immutable_target_type;
unsigned integrity_supported:1;
+ unsigned singleton:1;
/*
* Indicates the rw permissions for the new logical
char **argv;
struct dm_target *tgt;
+ if (t->singleton) {
+ DMERR("%s: target type %s must appear alone in table",
+ dm_device_name(t->md), t->targets->type->name);
+ return -EINVAL;
+ }
+
if ((r = check_space(t)))
return r;
return -EINVAL;
}
+ if (dm_target_needs_singleton(tgt->type)) {
+ if (t->num_targets) {
+ DMERR("%s: target type %s must appear alone in table",
+ dm_device_name(t->md), type);
+ return -EINVAL;
+ }
+ t->singleton = 1;
+ }
+
+ if (dm_target_always_writeable(tgt->type) && !(t->mode & FMODE_WRITE)) {
+ DMERR("%s: target type %s may not be included in read-only tables",
+ dm_device_name(t->md), type);
+ return -EINVAL;
+ }
+
+ if (t->immutable_target_type) {
+ if (t->immutable_target_type != tgt->type) {
+ DMERR("%s: immutable target type %s cannot be mixed with other target types",
+ dm_device_name(t->md), t->immutable_target_type->name);
+ return -EINVAL;
+ }
+ } else if (dm_target_is_immutable(tgt->type)) {
+ if (t->num_targets) {
+ DMERR("%s: immutable target type %s cannot be mixed with other target types",
+ dm_device_name(t->md), tgt->type->name);
+ return -EINVAL;
+ }
+ t->immutable_target_type = tgt->type;
+ }
+
tgt->table = t;
tgt->begin = start;
tgt->len = len;
return t->type;
}
+struct target_type *dm_table_get_immutable_target_type(struct dm_table *t)
+{
+ return t->immutable_target_type;
+}
+
bool dm_table_request_based(struct dm_table *t)
{
return dm_table_get_type(t) == DM_TYPE_REQUEST_BASED;