A Windows file system control filter driver library, for you to develop Windows file access control application with the SDK.A file system filter driver is an optional driver that adds value to or modifies the behavior of a file system. A file system filter driver is a kernel-mode component that runs as part of the Windows executive.A file system filter driver intercepts requests targeted at a file system or another file system filter driver. By intercepting the request before it reaches its intended target, the filter driver can extend or replace functionality provided by the original target of the request.

What can you do with the File Control Filter Driver SDK 1.Block the new file creation via configuring the access control flag of the filter rule.

Example: Block the new file creation in folder c:\test: AddFileFilterRule(ALLOW_MAX_RIGHT_ACCESS&(~ALLOW_OPEN_WITH_CREATE_OR_OVERWRITE_ACCESS), L"c:\test\*", 1);

2.Prevent your sensitive files from being copied out of your protected folder

Example: Prevent the files in folder c:\test from being copied out. AddFileFilterRule(ALLOW_MAX_RIGHT_ACCESS&(~ALLOW_COPY_PROTECTED_FILES_OUT), L"c:\test\*", 1);

3.Prevent your sensitive files from being modified, renamed or deleted

Example: Prevent the file from being modified, renamed or deleted in folder c:\test: AddFileFilterRule(ALLOW_MAX_RIGHT_ACCESS&(~(ALLOW_WRITE_ACCESS|ALLOW_FILE_RENAME|ALLOW_FILE_DELETE), L"c:\test\*", 1);

4.Prevent your sensitive files from being accessed from the network computer

Example: Protect the files in folder c:\test, block the file access from the network.

AddFileFilterRule(ALLOW_MAX_RIGHT_ACCESS&(~ALLOW_FILE_ACCESS_FROM_NETWORK), L"c:\test\*", 1);

5.Hide your sensitive files to the specific processes or users

Example: Hide the files in folder c:\test for process "explorer.exe"

AddFileFilterRule(ALLOW_MAX_RIGHT_ACCESS|HIDE_FILES_IN_DIRECTORY_BROWSING, L"c:\test\", 1); AddIncludeProcessNameToFilterRule(L"c:\test\",L"explorer.exe"); AddHiddenFileMaskToFilterRule(L"c:\test\",L".*");

6.Reparse your file open from one location to another location.

Example: Reparse the file open in folder c:\test to another folder c:\reparseFolder"

AddFileFilterRule(ALLOW_MAX_RIGHT_ACCESS|REPARSE_FILE_OPEN, L"c:\test\", 1); AddReparseFileMaskToFilterRule(L"c:\test\",L"c:\reparseFolder\*");

7.Allow or deny the specific file I/O operation via registering the specific I/O callback routine based on the process name, user name or the file I/O information.

Example: Register the PRE_CREATE, PRE_SETINFORMATION I/O for folder c:\test, you can allow or deny the file opern, creation, deletion, rename in the callback routine.

AddFileFilterRule(ALLOW_MAX_RIGHT_ACCESS, L"c:\test\", 1); RegisterControlToFilterRule(L"c:\test\",PRE_CREATE|PRE_SET_INFORMATION);

8.Authorize or De-authorize the file access rights (read,write,rename,delete..) to the specific processes or users. Example: Set the full access rights to the process "notepad.exe", set the readonly access rights to the process "wordpad.exe", remove all the access rights to other processes.

AddFileFilterRule(LEAST_ACCESS_FLAG, L"c:\test\", 1); AddProcessRightsToFilterRule(L"c:\test\",L"notepad.exe",ALLOW_MAX_RIGHT_ACCESS); AddProcessRightsToFilterRule(L"c:\test\*",L"wordpad.exe",ALLOW_MAX_RIGHT_ACCESS&(~(ALLOW_OPEN_WITH_CREATE_OR_OVERWRITE_ACCESS|ALLOW_WRITE_ACCESS|ALLOW_FILE_RENAME|ALLOW_FILE_DELETE|ALLOW_SET_INFORMATION));