1 /*
2 * Copyright (c) 1995
3 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * $FreeBSD: src/libexec/ypxfr/yp_dbwrite.c,v 1.8.2.1 2002/02/15 00:46:54 des Exp $
33 */
34
35 #include <db.h>
36 #include <errno.h>
37 #include <fcntl.h>
38 #include <limits.h>
39 #include <paths.h>
40 #include <stdio.h>
41 #include <stdlib.h>
42 #include <string.h>
43 #include <unistd.h>
44 #include <sys/stat.h>
45 #include <rpcsvc/yp.h>
46 #include "ypxfr_extern.h"
47
48 #define PERM_SECURE (S_IRUSR|S_IWUSR)
49
50 /*
51 * Open a DB database read/write
52 */
53 DB *
yp_open_db_rw(const char * domain,const char * map,const int flags)54 yp_open_db_rw(const char *domain, const char *map, const int flags)
55 {
56 DB *dbp;
57 char buf[1025];
58
59
60 yp_errno = YP_TRUE;
61
62 if (map[0] == '.' || strchr(map, '/')) {
63 yp_errno = YP_BADARGS;
64 return (NULL);
65 }
66
67 #define FLAGS O_RDWR|O_EXLOCK|O_EXCL|O_CREAT
68
69 snprintf(buf, sizeof(buf), "%s/%s/%s", yp_dir, domain, map);
70 dbp = dbopen(buf,flags ? flags : FLAGS,PERM_SECURE,DB_HASH,&openinfo);
71
72 if (dbp == NULL) {
73 switch (errno) {
74 case ENOENT:
75 yp_errno = YP_NOMAP;
76 break;
77 case EFTYPE:
78 yp_errno = YP_BADDB;
79 break;
80 default:
81 yp_errno = YP_YPERR;
82 break;
83 }
84 }
85
86 return (dbp);
87 }
88
89 int
yp_put_record(DB * dbp,DBT * key,DBT * data,int allow_overwrite)90 yp_put_record(DB *dbp, DBT *key, DBT *data, int allow_overwrite)
91 {
92 int rval;
93
94 if ((rval = (dbp->put)(dbp,key,data, allow_overwrite ? 0 :
95 R_NOOVERWRITE))) {
96 switch (rval) {
97 case 1:
98 return(YP_FALSE);
99 break;
100 case -1:
101 default:
102 (void)(dbp->close)(dbp);
103 return(YP_BADDB);
104 break;
105 }
106 }
107
108 return(YP_TRUE);
109 }
110