yp_dbwrite.c revision 16132
1217309Snwhitehorn/* 2217309Snwhitehorn * Copyright (c) 1995 3217309Snwhitehorn * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. 4217309Snwhitehorn * 5217309Snwhitehorn * Redistribution and use in source and binary forms, with or without 6217309Snwhitehorn * modification, are permitted provided that the following conditions 7217309Snwhitehorn * are met: 8217309Snwhitehorn * 1. Redistributions of source code must retain the above copyright 9217309Snwhitehorn * notice, this list of conditions and the following disclaimer. 10217309Snwhitehorn * 2. Redistributions in binary form must reproduce the above copyright 11217309Snwhitehorn * notice, this list of conditions and the following disclaimer in the 12217309Snwhitehorn * documentation and/or other materials provided with the distribution. 13217309Snwhitehorn * 3. All advertising materials mentioning features or use of this software 14217309Snwhitehorn * must display the following acknowledgement: 15217309Snwhitehorn * This product includes software developed by Bill Paul. 16217309Snwhitehorn * 4. Neither the name of the author nor the names of any co-contributors 17217309Snwhitehorn * may be used to endorse or promote products derived from this software 18217309Snwhitehorn * without specific prior written permission. 19217309Snwhitehorn * 20217309Snwhitehorn * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 21217309Snwhitehorn * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22217309Snwhitehorn * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23217309Snwhitehorn * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE 24217309Snwhitehorn * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25217309Snwhitehorn * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26217309Snwhitehorn * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27217309Snwhitehorn * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28217309Snwhitehorn * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29217309Snwhitehorn * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30217309Snwhitehorn * SUCH DAMAGE. 31217309Snwhitehorn * 32217309Snwhitehorn * $Id: yp_dbwrite.c,v 1.10 1996/06/03 03:11:25 wpaul Exp $ 33217309Snwhitehorn * 34217309Snwhitehorn */ 35217309Snwhitehorn#include <stdio.h> 36217309Snwhitehorn#include <stdlib.h> 37217309Snwhitehorn#include <fcntl.h> 38217309Snwhitehorn#include <string.h> 39217309Snwhitehorn#include <limits.h> 40217309Snwhitehorn#include <unistd.h> 41217309Snwhitehorn#include <db.h> 42217309Snwhitehorn#include <sys/stat.h> 43217309Snwhitehorn#include <errno.h> 44217309Snwhitehorn#include <paths.h> 45217309Snwhitehorn#include <rpcsvc/yp.h> 46217309Snwhitehorn#include "ypxfr_extern.h" 47217309Snwhitehorn 48217309Snwhitehorn#ifndef lint 49217309Snwhitehornstatic const char rcsid[] = "$Id: yp_dbwrite.c,v 1.10 1996/06/03 03:11:25 wpaul Exp $"; 50217309Snwhitehorn#endif 51217309Snwhitehorn 52217309Snwhitehorn#define PERM_SECURE (S_IRUSR|S_IWUSR) 53217309Snwhitehorn 54217309Snwhitehorn/* 55217309Snwhitehorn * Open a DB database read/write 56217309Snwhitehorn */ 57217309SnwhitehornDB *yp_open_db_rw(domain, map, flags) 58217309Snwhitehorn const char *domain; 59217309Snwhitehorn const char *map; 60217309Snwhitehorn const int flags; 61217309Snwhitehorn{ 62217309Snwhitehorn DB *dbp; 63217309Snwhitehorn char buf[1025]; 64217309Snwhitehorn 65217309Snwhitehorn 66217309Snwhitehorn yp_errno = YP_TRUE; 67217309Snwhitehorn 68217309Snwhitehorn if (map[0] == '.' || strchr(map, '/')) { 69217309Snwhitehorn yp_errno = YP_BADARGS; 70217309Snwhitehorn 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