5 Commits

Author	SHA1	Message	Date
Peter Rajnoha	03c941a4ca	device: cleanup signature wiping functions ... The wipe_known_signatures fn now wraps the _wipe_signature fn that is called for each known signature (currently md, swap and luks). This patch makes the code more readable, not repeating the same sequence when used anywhere in the code. We're going to reuse this code later...	2013-11-27 12:56:58 +01:00
Zdenek Kabelac	17a3ddf89e	cleanup: drop unused headers ... Drop heades which do not provide any used symbols.	2013-06-16 00:07:32 +02:00
Peter Rajnoha	c6f48b7c1a	refactor: make device type recognition code common for general use ... Changes: - move device type registration out of "type filter" (filter.c) to a separate and new dev-type.[ch] for common use throughout the code - the structure for keeping the major numbers detected for available device types and available partitioning available is stored in "dev_types" structure now - move common partitioning detection code to dev-type.[ch] as well together with other device-related functions bound to dev_types (see dev-type.h for the interface) The dev-type interface contains all common functions used to detect subsystems/device types, signature/superblock recognition code, type-specific device properties and other common device properties (bound to dev_types), including partitioning support. - add dev_types instance to cmd context as cmd->dev_types for common use - use cmd->dev_types throughout as a central point for providing information about device types	2013-06-12 12:08:56 +02:00
Peter Rajnoha	c08c564e21	Use new dev_open_readonly fn to prevent opening devices for read-write when not necessary. ... Before, we used vg_write_lock_held call to determnine the way a device is opened. Unfortunately, this opened many devices in RW mode when it was not really necessary. With the OPTIONS+="watch" rule used in the udev rules, this could fire numerous events while closing such devices (and it caused useless scans from within udev rules in return). A common bug we hit with this was with the lvremove command which was unable to remove the LV since it was being opened from within the udev rules. This patch should minimize such situations (at least with respect to LVM handling of devices). Though there's still a possibility someone will open a device 'outside' in parallel and fire the event based on the watch rule when closing a device once opened for RW.	2011-05-28 09:48:14 +00:00
Milan Broz	727f7bfa49	Detect LUKS signature in pvcreate ... One shiny day we should use libblkid here. But now using LUKS is very common together with LVM and pvcreate destroys LUKS completely. So for user's convenience, try to detect LUKS signature and allow abort.	2010-08-19 23:08:18 +00:00