shim_dbm_open
m.map = (map_ctrl *)shim_dbm_open(path, 0, 0);
netgroupmap = (map_ctrl *)shim_dbm_open(cmdbuf,
extern DBM *shim_dbm_open(const char *file, int open_flags,
map = shim_dbm_open(map_name, O_RDWR, 0600);
extern DBM *shim_dbm_open(const char *file, int open_flags,
#define dbm_open shim_dbm_open