/* Set up NIP to run through the services. Return nonzero if there are no
services (left). */
static int
setup (void **fctp, service_user **nipp)
{
/* Remember the first service_entry, it's always the same. */
static bool startp_initialized;
static service_user *startp;
int no_more;
if (!startp_initialized)
{
/* Executing this more than once at the same time must yield the
same result every time. So we need no locking. */
no_more = __nss_netgroup_lookup (nipp, "setnetgrent", fctp);
startp = no_more ? (service_user *) -1 : *nipp;
PTR_MANGLE (startp);
atomic_write_barrier ();
startp_initialized = true;
}
else
{
service_user *nip = startp;
PTR_DEMANGLE (nip);
if (nip == (service_user *) -1)
/* No services at all. */
return 1;
/* Reset to the beginning of the service list. */
*nipp = nip;
/* Look up the first function. */
no_more = __nss_lookup (nipp, "setnetgrent", NULL, fctp);
}
return no_more;
}
/* Set up NIP to run through the services. If ALL is zero, use NIP's
current location if it's not nil. Return nonzero if there are no
services (left). */
static enum nss_status
setup (void **fctp, const char *func_name, int all, service_user **nipp)
{
/* Remember the first service_entry, it's always the same. */
static service_user *startp;
int no_more;
if (startp == NULL)
{
/* Executing this more than once at the same time must yield the
same result every time. So we need no locking. */
no_more = __nss_netgroup_lookup (nipp, func_name, fctp);
startp = no_more ? (service_user *) -1 : *nipp;
}
else if (startp == (service_user *) -1)
/* No services at all. */
return 1;
else
{
if (all || *nipp == NULL)
/* Reset to the beginning of the service list. */
*nipp = startp;
/* Look up the first function. */
no_more = __nss_lookup (nipp, func_name, fctp);
}
return no_more;
}
