IoLockType Enumeration

Specifies the type of lock to obtain for the device session.

enum IoLockType

Members

	Member name	Description
	IoLockExclusive	Obtain an exclusive lock on the device. A session can lock a device using this lock type to get exclusive access privileges to the device. This exclusive lock type excludes access to the device from all other sessions.
	IoLockShared	Obtain a shared lock on the device. A session can share a lock on a device with other sessions by using a shared lock. Shared locks are similar to exclusive locks in terms of access privileges, but they can be shared between multiple sessions. A session that has obtained a shared lock can modify aspects of the device (unless it has been exclusively locked by another session). Sessions that do not have a shared lock on the device will not be able to access it.

Member name

Description

IoLockExclusive

Obtain an exclusive lock on the device.

A session can lock a device using this lock type to get exclusive access privileges to the device. This exclusive lock type excludes access to the device from all other sessions.

IoLockShared

Obtain a shared lock on the device.

A session can share a lock on a device with other sessions by using a shared lock. Shared locks are similar to exclusive locks in terms of access privileges, but they can be shared between multiple sessions.

A session that has obtained a shared lock can modify aspects of the device (unless it has been exclusively locked by another session). Sessions that do not have a shared lock on the device will not be able to access it.

Remarks

See the Lock function for details.

Other Resources

Lock

Unlock