File device-mapper-dmsetup-deps-export.patch of Package device-mapper

Index: LVM2.2.02.84/tools/dmsetup.c
===================================================================
--- LVM2.2.02.84.orig/tools/dmsetup.c	2011-02-15 15:00:52.000000000 +0800
+++ LVM2.2.02.84/tools/dmsetup.c	2011-02-15 15:00:54.000000000 +0800
@@ -1645,6 +1645,7 @@
 	const char *name = NULL;
 	const char *uuid = NULL;
 	struct dm_info info;
+	struct dm_deps *deps;
 
 	if (data)
 		name = names->name;
@@ -1714,6 +1715,28 @@
 		printf("\n");
 	}
 
+	dm_task_destroy(dmt);
+
+	if (!(dmt = dm_task_create(DM_DEVICE_DEPS)))
+		goto out;
+
+	name = NULL;
+    if (data)
+		name = names->name;
+    else if (argc == 2)
+		name = argv[1];
+
+	if (!_set_task_device(dmt, name, 0))
+		goto out;
+
+	if (!dm_task_run(dmt))
+		goto out;
+
+	if (!(deps = dm_task_get_deps(dmt)))
+		goto out;
+
+	printf("DM_DEPS=%d\n", deps->count);
+
 	r = 1;
       out:
 	if (dmt)