Patent ID: 6256646
Filing Date: 2001-07-03
Classification: G06F,Y10S

Abstract:
A method for identifying the state of a media device by monitoring file system calls, comprising:monitoring and obtaining information from a file system call;determining whether the file system call originated from a specified high level application;setting a state for a monitored media device to indicate an unknown state if the file system call did not originate from the specified high level application and will modify the monitored media device;setting a state for the monitored media device to indicate a known state if the file system call did originate from the specified high level application and is a read request;allowing the file system call to pass to a low level driver for the monitored media device if the file system call is a write request that originated from the specified high level application and the monitored media device is in a known state;rejecting the file system call if the file system call is a write request that originated from the specified high level application and the monitored media device is in an unknown state; andwherein the high level application writes to the monitored media device to perform a flushing process on the monitored media device to securely delete inactive data.