# FS_ARCHIVE_PROC_FUNC

## Definition

  `#include <nitro/fs.h>`
  `typedef FSResult (*FS_ARCHIVE_PROC_FUNC)(struct FSFile*, FSCommandType);`

## Description

Defines the function formats of the user procedures specified in the archive.
The file system calls this function as a callback as necessary. User procedures must return appropriate values after processes.
See description of `FSResult` for return values.
When `FS_RESULT_PROC_ASYNC` is returned as the return value, you must call the `FS_NotifyArchiveAsyncEnd` function upon completion of asynchronous processing, and notify the archive.

## See Also

`FSArchive, FSCommandType, FSResult, FS_SetArchiveProc, FS_NotifyArchiveAsyncEnd`

## Revision History

11/02/2004 Corrected the function declaration.
07/12/2004 Added description of return values.
06/30/2004 Initial version.