fs_open_query
extern DIR *fs_open_query(dev_t device, const char *query, uint32 flags);
p->grent_query = fs_open_query(boot_device, Q_GR_ALL, 0);
query = fs_open_query(boot_device, p->grfile, 0);
query = fs_open_query(boot_device, p->grfile, 0);
p->pwent_query = fs_open_query(boot_device, Q_PW_ALL, 0);
query = fs_open_query(boot_device, p->pwfile, 0);
query = fs_open_query(boot_device, p->pwfile, 0);