yp_dbwrite.c revision 16132
1168054Sflz/* 2168054Sflz * Copyright (c) 1995 3168054Sflz * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. 4168054Sflz * 5168064Sflz * Redistribution and use in source and binary forms, with or without 6168064Sflz * modification, are permitted provided that the following conditions 7168064Sflz * are met: 8168064Sflz * 1. Redistributions of source code must retain the above copyright 9168064Sflz * notice, this list of conditions and the following disclaimer. 10168064Sflz * 2. Redistributions in binary form must reproduce the above copyright 11168064Sflz * notice, this list of conditions and the following disclaimer in the 12168064Sflz * documentation and/or other materials provided with the distribution. 13168064Sflz * 3. All advertising materials mentioning features or use of this software 14168064Sflz * must display the following acknowledgement: 15168064Sflz * This product includes software developed by Bill Paul. 16168064Sflz * 4. Neither the name of the author nor the names of any co-contributors 17168064Sflz * may be used to endorse or promote products derived from this software 18168064Sflz * without specific prior written permission. 19168054Sflz * 20168054Sflz * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 21168064Sflz * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22168054Sflz * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23168064Sflz * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE 24168064Sflz * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25168054Sflz * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26168054Sflz * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27168054Sflz * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28168054Sflz * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29168055Spav * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30168059Sgabor * SUCH DAMAGE. 31168054Sflz * 32168059Sgabor * $Id: yp_dbwrite.c,v 1.10 1996/06/03 03:11:25 wpaul Exp $ 33168054Sflz * 34168054Sflz */ 35168055Spav#include <stdio.h> 36168055Spav#include <stdlib.h> 37168055Spav#include <fcntl.h> 38168054Sflz#include <string.h> 39168055Spav#include <limits.h> 40168055Spav#include <unistd.h> 41168054Sflz#include <db.h> 42168055Spav#include <sys/stat.h> 43168061Sahze#include <errno.h> 44168054Sflz#include <paths.h> 45168054Sflz#include <rpcsvc/yp.h> 46168064Sflz#include "ypxfr_extern.h" 47168064Sflz 48168054Sflz#ifndef lint 49168055Spavstatic const char rcsid[] = "$Id: yp_dbwrite.c,v 1.10 1996/06/03 03:11:25 wpaul Exp $"; 50168055Spav#endif 51168055Spav 52168055Spav#define PERM_SECURE (S_IRUSR|S_IWUSR) 53168055Spav 54168055Spav/* 55168057Sahze * Open a DB database read/write 56168055Spav */ 57168059SgaborDB *yp_open_db_rw(domain, map, flags) 58168059Sgabor const char *domain; 59168054Sflz const char *map; 60168054Sflz const int flags; 61168054Sflz{ 62168054Sflz DB *dbp; 63168054Sflz char buf[1025]; 64168055Spav 65168055Spav 66168055Spav yp_errno = YP_TRUE; 67168054Sflz 68168054Sflz if (map[0] == '.' || strchr(map, '/')) { 69 yp_errno = YP_BADARGS; 70 return (NULL); 71 } 72 73#define FLAGS O_RDWR|O_EXLOCK|O_EXCL|O_CREAT 74 75 snprintf(buf, sizeof(buf), "%s/%s/%s", yp_dir, domain, map); 76 dbp = dbopen(buf,flags ? flags : FLAGS,PERM_SECURE,DB_HASH,&openinfo); 77 78 if (dbp == NULL) { 79 switch(errno) { 80 case ENOENT: 81 yp_errno = YP_NOMAP; 82 break; 83 case EFTYPE: 84 yp_errno = YP_BADDB; 85 break; 86 default: 87 yp_errno = YP_YPERR; 88 break; 89 } 90 } 91 92 return (dbp); 93} 94 95int yp_put_record(dbp,key,data,allow_overwrite) 96 DB *dbp; 97 DBT *key; 98 DBT *data; 99 int allow_overwrite; 100{ 101 int rval; 102 103 if ((rval = (dbp->put)(dbp,key,data, allow_overwrite ? 0 : 104 R_NOOVERWRITE))) { 105 switch(rval) { 106 case 1: 107 return(YP_FALSE); 108 break; 109 case -1: 110 default: 111 (void)(dbp->close)(dbp); 112 return(YP_BADDB); 113 break; 114 } 115 } 116 117 return(YP_TRUE); 118} 119