Added ability to remove id mappings in wbinfo and libwbclient.

The idmap_tdb backend already provides an interface to remove existing id
mappings.  This commit plumbs that ability up through, winbindd, libwbclient,
and wbinfo.

Added new winbindd command:
        WINBINDD_REMOVE_MAPPING
Added new libwbclient interfaces:
        wbcRemoveUidMapping() and wbcRemoveGidMapping()
Added new wbinfo options:
        --remove-uid-mapping
        --remove-gid-mapping

Increased libwbclient version to 0.2
Increased winbind interface version to 20

1 files changed, 17 insertions, 0 deletions

diff --git a/source3/winbindd/idmap.c b/source3/winbindd/idmap.c
index cfc5597f42..054df9be05 100644
--- a/source3/winbindd/idmap.c
+++ b/source3/winbindd/idmap.c
@@ -788,3 +788,20 @@ NTSTATUS idmap_set_mapping(const struct id_map *map)
 
 	return dom->methods->set_mapping(dom, map);
 }
+
+NTSTATUS idmap_remove_mapping(const struct id_map *map)
+{
+	struct idmap_domain *dom;
+
+	dom = idmap_find_domain(NULL);
+	if (dom == NULL) {
+		DEBUG(3, ("no default domain, no place to write\n"));
+		return NT_STATUS_ACCESS_DENIED;
+	}
+	if (dom->methods->remove_mapping == NULL) {
+		DEBUG(3, ("default domain not writable\n"));
+		return NT_STATUS_MEDIA_WRITE_PROTECTED;
+	}
+
+	return dom->methods->remove_mapping(dom, map);
+}