usr/src/lib/libc/port/nsl/getrpcent.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22
  23 /*
  24  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  25  * Use is subject to license terms.
  26  */
  27
  28 /*
  29  * Ye olde non-reentrant interface (MT-unsafe, caveat utor)
  30  */
  31
  32 #pragma ident   "%Z%%M% %I%     %E% SMI"
  33
  34 #include "mt.h"
  35 #include <rpc/rpcent.h>
  36 #include <nss_dbdefs.h>
  37
  38 /*
  39  * Don't free this, even on an endrpcent(), because bitter experience shows
  40  * that there's production code that does getXXXbyYYY(), then endXXXent(),
  41  * and then continues to use the pointer it got back.
  42  */
  43 static nss_XbyY_buf_t *buffer;
  44 #define GETBUF()        \
  45         NSS_XbyY_ALLOC(&buffer, sizeof (struct rpcent), NSS_BUFLEN_RPC)
  46         /* === ?? set ENOMEM on failure?  */
  47
  48 struct rpcent *
  49 getrpcbyname(const char *nam)
  50 {
  51         nss_XbyY_buf_t  *b;
  52
  53         if ((b = GETBUF()) == 0)
  54                 return (NULL);
  55         return (getrpcbyname_r(nam, b->result, b->buffer, b->buflen));
  56 }
  57
  58 struct rpcent *
  59 getrpcbynumber(const int num)
  60 {
  61         nss_XbyY_buf_t  *b;
  62
  63         if ((b = GETBUF()) == 0)
  64                 return (NULL);
  65         return (getrpcbynumber_r(num, b->result, b->buffer, b->buflen));
  66 }
  67
  68 struct rpcent *
  69 getrpcent(void)
  70 {
  71         nss_XbyY_buf_t  *b;
  72
  73         if ((b = GETBUF()) == 0)
  74                 return (NULL);
  75         return (getrpcent_r(b->result, b->buffer, b->buflen));
  76 }