db_env_set_func_close
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## db_env_set_func_close

    #include <db.h>

    int
    db_env_set_func_close(int (*func_close)(int fd));

Replace Berkeley DB calls to the IEEE/ANSI Std 1003.1 (POSIX) close function with func_close, which must conform to the standard interface specification.

The `db_env_set_func_close()` function configures all operations performed by a process and all of its threads of control, not operations confined to a single database environment.

Although the `db_env_set_func_close()` function may be called at any time during the life of the application, it should normally be called before making calls to the db_env_create or db_create methods.

The `db_env_set_func_close()` function returns a non-zero error value on failure and 0 on success.

### Parameters

#### func_close

The func_close parameter is the replacement function. It must conform to the standard interface specification.

### See Also

Run-time configuration

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