DB_MPOOLFILE->set_ftype()
#include <db.h>
int
DB_MPOOLFILE->set_ftype(DB_MPOOLFILE *mpf, int ftype); The DB_MPOOLFILE->set_ftype() method specifies a file type for the purposes of input or output processing of the file's pages as they are read from or written to, the backing filesystem store.
The DB_MPOOLFILE->set_ftype() method configures a file in the cache, not only operations performed using the specified DB_MPOOLFILE handle.
The DB_MPOOLFILE->set_ftype() method may not be called after the DB_MPOOLFILE->open() method is called. If the file is already open in the cache when DB_MPOOLFILE->open() is called, the information specified to DB_MPOOLFILE->set_ftype() will replace the existing information.
The DB_MPOOLFILE->set_ftype() method returns a non-zero error value on failure and 0 on success.
Parameters
ftype
The ftype parameter sets the file's type for the purposes of input and output processing. The ftype must be the same as a ftype parameter previously specified to the DB_ENV->memp_register() method.