HSetFLock

HSetFLock
Header:	Files.h		Carbon status:	Supported

Locks a file.

OSErr HSetFLock (
    SInt16 vRefNum, 
    SInt32 dirID, 
    ConstStr255Param fileName
);

vRefNum: A volume reference number, a working directory reference number, or 0 for the default volume.
dirID: A directory ID.
fileName: The name of the file.

function result: A result code.

DISCUSSION

After you lock a file, all new access paths to that file are read-only. This function has no effect on existing access paths.

If the PBHGetVolParmsSync or PBHGetVolParmsAsync function indicates that the volume supports folder locking (that is, the bHasFolderLock bit of the vMAttrib field is set), you can use HSetFLock to lock a directory.

AVAILABILITY

Supported in Carbon. Available in Mac OS 8.1 and later when Carbon 1.0.2 or later is present.