minix/lib/libc/yp/yp_master.c

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/* $NetBSD: yp_master.c,v 1.15 2012/06/25 22:32:46 abs Exp $ */
/*
* Copyright (c) 1992, 1993 Theo de Raadt <deraadt@fsa.ca>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: yp_master.c,v 1.15 2012/06/25 22:32:46 abs Exp $");
#endif
#include "namespace.h"
#include <string.h>
#include <stdlib.h>
#include <rpc/rpc.h>
#include <rpcsvc/yp_prot.h>
#include <rpcsvc/ypclnt.h>
#include "local.h"
extern struct timeval _yplib_timeout;
extern int _yplib_nerrs;
extern int _yplib_bindtries;
#ifdef __weak_alias
__weak_alias(yp_master,_yp_master)
#endif
int
yp_master(const char *indomain, const char *inmap, char **outname)
{
struct dom_binding *ysd;
struct ypresp_master yprm;
struct ypreq_nokey yprnk;
int r, nerrs = 0;
if (outname == NULL)
return YPERR_BADARGS;
*outname = NULL;
if (_yp_invalid_domain(indomain))
return YPERR_BADARGS;
if (inmap == NULL || *inmap == '\0'
|| strlen(inmap) > YPMAXMAP)
return YPERR_BADARGS;
again:
if (_yp_dobind(indomain, &ysd) != 0)
return YPERR_DOMAIN;
yprnk.domain = indomain;
yprnk.map = inmap;
(void)memset(&yprm, 0, sizeof yprm);
r = clnt_call(ysd->dom_client, (rpcproc_t)YPPROC_MASTER,
(xdrproc_t)xdr_ypreq_nokey, &yprnk,
(xdrproc_t)xdr_ypresp_master, &yprm, _yplib_timeout);
if (r != RPC_SUCCESS) {
if (_yplib_bindtries <= 0 && ++nerrs == _yplib_nerrs) {
clnt_perror(ysd->dom_client, "yp_master: clnt_call");
nerrs = 0;
} else if (_yplib_bindtries > 0 && ++nerrs == _yplib_bindtries)
return YPERR_YPSERV;
ysd->dom_vers = -1;
goto again;
}
if (!(r = ypprot_err(yprm.status))) {
if ((*outname = strdup(yprm.master)) == NULL)
r = YPERR_RESRC;
}
xdr_free((xdrproc_t)xdr_ypresp_master, (char *)(void *)&yprm);
__yp_unbind(ysd);
if (r != 0) {
if (*outname) {
free(*outname);
*outname = NULL;
}
}
return r;
}