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Inside Macintosh: Files /

Chapter 2 - File Manager / File Manager Reference

File System Specification Routines / Accessing Information About Files and Directories

FSpSetFLock

You can use the FSpSetFLock function to lock a file.

FUNCTION FSpSetFLock (spec: FSSpec): OSErr; 

spec

An FSSpec record specifying the file to lock.

DESCRIPTION

The FSpSetFLock function locks a file. 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 PBHGetVolParms function indicates that the volume supports folder locking (that is, the bHasFolderLock bit of the vMAttrib field is set), you can use FSpSetFLock to lock a directory.

ASSEMBLY-LANGUAGE INFORMATION

The trap macro and routine selector for FSpSetFLock are

Trap macro	Selector
_HighLevelHFSDispatch	$0009

RESULT CODES

noErr	0	No error
nsvErr	-35	No such volume
ioErr	-36	I/O error
fnfErr	-43	File not found
wPrErr	-44	Hardware volume lock
vLckdErr	-46	Software volume lock
dirNFErr	-120	Directory not found or incomplete pathname
afpAccessDenied	-5000	User does not have the correct access to the file
afpObjectTypeErr	-5025	Folder locking not supported by volume