X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fmd%2Fdm-ioctl.c;h=9627fa0f9470cfdb4055199e83eb68c7f8a5f18f;hb=2b7e5bcbd9e03f7236d2869f4261059074ea50a2;hp=b441d82c338a32156a6d270eaa1f7cb5553178f9;hpb=fe6af6faec078ec8137631f24cb541f9918244f0;p=linux-2.6

diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c
index b441d82c33..9627fa0f94 100644
--- a/drivers/md/dm-ioctl.c
+++ b/drivers/md/dm-ioctl.c
@@ -332,6 +332,8 @@ static int dm_hash_rename(const char *old, const char *new)
 		dm_table_put(table);
 	}
 
+	dm_kobject_uevent(hc->md);
+
 	dm_put(hc->md);
 	up_write(&_hash_lock);
 	kfree(old_name);
@@ -700,7 +702,7 @@ static int dev_rename(struct dm_ioctl *param, size_t param_size)
 	int r;
 	char *new_name = (char *) param + param->data_start;
 
-	if (new_name < (char *) (param + 1) ||
+	if (new_name < (char *) param->data ||
 	    invalid_str(new_name, (void *) param + param_size)) {
 		DMWARN("Invalid new logical volume name supplied.");
 		return -EINVAL;
@@ -726,7 +728,7 @@ static int dev_set_geometry(struct dm_ioctl *param, size_t param_size)
 	if (!md)
 		return -ENXIO;
 
-	if (geostr < (char *) (param + 1) ||
+	if (geostr < (char *) param->data ||
 	    invalid_str(geostr, (void *) param + param_size)) {
 		DMWARN("Invalid geometry supplied.");
 		goto out;
@@ -1233,7 +1235,7 @@ static int target_message(struct dm_ioctl *param, size_t param_size)
 	if (r)
 		goto out;
 
-	if (tmsg < (struct dm_target_msg *) (param + 1) ||
+	if (tmsg < (struct dm_target_msg *) param->data ||
 	    invalid_str(tmsg->message, (void *) param + param_size)) {
 		DMWARN("Invalid target message parameters.");
 		r = -EINVAL;
@@ -1250,21 +1252,17 @@ static int target_message(struct dm_ioctl *param, size_t param_size)
 	if (!table)
 		goto out_argv;
 
-	if (tmsg->sector >= dm_table_get_size(table)) {
+	ti = dm_table_find_target(table, tmsg->sector);
+	if (!dm_target_is_valid(ti)) {
 		DMWARN("Target message sector outside device.");
 		r = -EINVAL;
-		goto out_table;
-	}
-
-	ti = dm_table_find_target(table, tmsg->sector);
-	if (ti->type->message)
+	} else if (ti->type->message)
 		r = ti->type->message(ti, argc, argv);
 	else {
 		DMWARN("Target type does not support messages");
 		r = -EINVAL;
 	}
 
- out_table:
 	dm_table_put(table);
  out_argv:
 	kfree(argv);
@@ -1358,7 +1356,7 @@ static int copy_params(struct dm_ioctl __user *user, struct dm_ioctl **param)
 	if (tmp.data_size < sizeof(tmp))
 		return -EINVAL;
 
-	dmi = (struct dm_ioctl *) vmalloc(tmp.data_size);
+	dmi = vmalloc(tmp.data_size);
 	if (!dmi)
 		return -ENOMEM;
 
@@ -1515,3 +1513,35 @@ void dm_interface_exit(void)
 
 	dm_hash_exit();
 }
+
+/**
+ * dm_copy_name_and_uuid - Copy mapped device name & uuid into supplied buffers
+ * @md: Pointer to mapped_device
+ * @name: Buffer (size DM_NAME_LEN) for name
+ * @uuid: Buffer (size DM_UUID_LEN) for uuid or empty string if uuid not defined
+ */
+int dm_copy_name_and_uuid(struct mapped_device *md, char *name, char *uuid)
+{
+	int r = 0;
+	struct hash_cell *hc;
+
+	if (!md)
+		return -ENXIO;
+
+	dm_get(md);
+	down_read(&_hash_lock);
+	hc = dm_get_mdptr(md);
+	if (!hc || hc->md != md) {
+		r = -ENXIO;
+		goto out;
+	}
+
+	strcpy(name, hc->name);
+	strcpy(uuid, hc->uuid ? : "");
+
+out:
+	up_read(&_hash_lock);
+	dm_put(md);
+
+	return r;
+}