AddPassthroughRule Method

Adds a passthrough rule.

Syntax

int AddPassthroughRule(const char* lpszMask, int64 lNotifyFlags);
INT AddPassthroughRule(LPCWSTR lpszMask, LONG64 lNotifyFlags);

Remarks

This method adds a passthrough rule for the files and directories that match the specified Mask. Each rule in a ruleset is uniquely identified by its mask; if a rule with the specified mask already exists, the new rule's parameters are merged into it.

If the rule is added successfully, this method returns true; otherwise, it returns false.

Passthrough rules exclude matching files and directories from being processed by other filter rules.

The Mask parameter must be a valid file mask according to the File Masks topic. Only the files and directories which match the specified mask will be covered by the rule.

The NotifyFlags parameter specifies which filesystem operations the class should not fire Notification Events for. The value passed for this parameter should be constructed by OR'ing together zero or more of the following flags:

FS_NE_NONE0Don't fire for any filesystem operations.

Notification Events will not fire for any filesystem operations.

FS_NE_CREATE0x00000001LFire for file creation operations.

The NotifyCreateFile event will fire anytime the OS creates a file or directory.

FS_NE_OPEN0x00000002LFire for file open operations.

The NotifyOpenFile event will fire anytime the OS opens a file or directory.

FS_NE_READ0x00000004LFire for read operations.

The NotifyReadFile event will fire anytime the OS reads data from a file.

FS_NE_WRITE0x00000008LFire for write operations.

The NotifyWriteFile event will fire anytime the OS write data to a file.

FS_NE_LOCK_CONTROL0x00000010LFire for lock and unlock operations.

The NotifyLock, NotifyUnlockAll, NotifyUnlockAllByKey, and NotifyUnlockSingle events will fire, as applicable, anytime the OS locks or unlocks a range of bytes in a file.

FS_NE_CLEANUP0x00000020LFire for file handle cleanup operations.

The NotifyCleanupFile event will fire anytime a process closes a file or directory handle.

FS_NE_CLOSE0x00000040LFire for file close operations.

The NotifyCloseFile event will fire anytime the OS closes a file or directory.

FS_NE_CAN_DELETE0x00000080LFire for 'can be deleted' operations.

The NotifyCanFileBeDeleted event will fire anytime the OS checks whether a file or directory can be deleted.

FS_NE_DELETE0x00000100LFire for delete operations.

The NotifyDeleteFile event will fire anytime the OS deletes a file or directory.

FS_NE_RENAME0x00000200LFire for rename/move operations.

The NotifyRenameOrMoveFile event will fire anytime the OS renames or moves a file or directory.

FS_NE_GET_SECURITY0x00000400LFire for get security operations.

The NotifyGetFileSecurity event will fire anytime the OS queries the security attributes of a file or directory.

FS_NE_ENUMERATE_DIRECTORY0x00000800LFire for directory enumeration operations.

The NotifyEnumerateDirectory event will fire anytime the OS retrieves a directory entry during directory enumeration.

FS_NE_QUERY_FILE_INFO0x00001000LFire for QueryFileInformation operations.

The NotifyQueryFileInfo event will fire anytime the OS retrieves information about a file or directory.

FS_NE_GET_SIZES0x00002000LFire for get size operations.

The NotifyGetFileSizes event will fire anytime the OS retrieves a file's size information.

FS_NE_SET_SECURITY0x00004000LFire for set security operations.

The NotifySetFileSecurity event will fire anytime the OS changes the security attributes of a file or directory.

FS_NE_SET_ATTRIBUTES0x00008000LFire for file attribute update operations.

The NotifySetFileAttributes event will fire anytime the OS changes the attributes of a file or directory.

FS_NE_SET_SIZES0x00010000LFire for file resize operations.

The NotifySetFileSize event will fire anytime the OS resizes a file, and the NotifySetAllocationSize event will fire anytime the OS changes a file's allocation size.

FS_NE_CREATE_HARD_LINK0x00020000LFire for hard link creation operations.

The NotifyCreateHardLink event will fire anytime the OS creates a hard link.

FS_NE_FSCTL0x00040000LFire for FSCTL operations.

The NotifyFsctl event will fire anytime an IRP_MJ_FILE_SYSTEM_CONTROL operation occurs.

FS_NE_IOCTL0x00080000LFire for IOCTL operations.

The NotifyIoctl event will fire anytime an IRP_MJ_DEVICE_CONTROL operation occurs.

FS_NE_SET_FILE_INFO0x00100000LFire for SetFileInformation operations.

The NotifySetFileInfo event will fire anytime the OS changed information about a file or directory.

FS_NE_ALL-1Fire for all filesystem operations.

Notification Events will fire for all filesystem operations.

Note: The methods and properties related to rule management are not intended to be used from multiple threads at once. Applications that wish to use said methods and properties from multiple threads (such as, e.g., during the AfterFilterAttachToVolume and AfterFilterDetachFromVolume events) are responsible for employing proper thread synchronization techniques to ensure that manipulation and enumeration of the rule lists occurs in a thread-safe manner.

Error Handling (C++)

This method returns a Boolean value; after it returns, call the GetLastErrorCode() method to obtain its result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.

 
 
Copyright (c) 2020 Callback Technologies, Inc. - All rights reserved.
CBFS Filter 2020 C++ Edition - Version 20.0 [Build 7543]