DBENV->set_func_exists |
![]() ![]() |
#include <db.h>int DBENV->set_func_exists(DB_ENV *dbenv, int (*func_exists)(const char *path, int *isdirp));
The Berkeley DB library requires the ability to determine if a file exists, and optionally, if it is a file of type directory. The func argument must conform to the following interface:
int exists(const char *path, int *isdirp);
The path argument is the pathname of the file to be checked.
If the isdirp argument is non-NULL, it must be set to non-0 if path is a directory, and 0 if path is not a directory.
The func_exists function must return the value of errno on failure and 0 on success.
The DBENV->set_func_exists interface affects the entire application, not only the environment in which it is called.
The DBENV->set_func_exists interface may only be used to configure Berkeley DB before the DBENV->open interface is called.
The DBENV->set_func_exists function returns a non-zero error value on failure and 0 on success.
Called after DBENV->open was called.
![]() ![]() |