Open a connection and attach it to the HA lib
#include <ha/fcntl.h> int ha_open(const char *path, int oflag, RFp rfn, void *rhdl, unsigned haflags, ...); int ha_open64(const char *path, int oflag, RFp rfn, void *rhdl, unsigned haflags, ...);
In addition to opening the connection using the standard open|64() call, these convenience functions also call ha_attach() with the connection returned by the open() call.
The parameters rfn(), and rhdl(), and haflags() are passed to the ha_attach() call along with the connection ID returned by the open() call.
The remaining parameters are passed to the corresponding parameters in the open() call in their appropriate positions.
A new connection ID or -1 if an error occurred (errno is set).
The ha_open() call returns errors as returned by either the underlying open() call or the ha_attach() call.
ha_attach(), ha_creat(), ha_close(), ha_detach()
In the Library Reference: open()