Inside Macintosh: Files /

Chapter 2 - File Manager / File Manager Reference

File ID Routines / Creating and Deleting File ID References

PBCreateFileIDRef

Use the PBCreateFileIDRef function to establish a file ID reference for a file.

FUNCTION PBCreateFileIDRef (paramBlock: HParmBlkPtr; 
                              async: Boolean): OSErr;

paramBlock

A pointer to an fidParam variant of the HFS parameter block.

async

A Boolean value that specifies asynchronous (TRUE) or synchronous (FALSE) execution.

-->	ioCompletion	ProcPtr	A pointer to a completion routine.
<--	ioResult	OSErr	The result code of the function.
-->	ioNamePtr	StringPtr	A pointer to a filename.
-->	ioVRefNum	Integer	A volume specification.
-->	ioSrcDirID	LongInt	The file's parent directory ID.
<--	ioFileID	LongInt	A file ID.

DESCRIPTION

Given a volume reference number, filename, and parent directory ID, the PBCreateFileIDRef function creates a record to hold the name and parent directory ID of the specified file. PBCreateFileIDRef places the file ID in the ioFileID field.
If a file ID reference already exists for the file, PBCreateFileIDRef supplies the file
ID but returns the result code fidExists.

ASSEMBLY-LANGUAGE INFORMATION

The trap macro and routine selector for PBCreateFileIDRef are

Trap macro	Selector
_HFSDispatch	$0014

RESULT CODES

noErr	0	No error
nsvErr	-35	Volume not found
ioErr	-36	I/O error
fnfErr	-43	File not found
wPrErr	-44	Hardware volume lock
vLckdErr	-46	Software volume lock
paramErr	-50	Function not supported by volume
volOfflinErr	-53	Volume is offline
extFSErr	-58	External file system
wrgVolTypErr	-123	Not an HFS volume
fidExists	-1301	File ID already exists
notAFileErr	-1302	Specified file is a directory
afpAccessDenied	-5000	User does not have the correct access
afpObjectTypeErr	-5025	Specified file is a directory
afpIDExists	-5035	File ID already exists