1 /* $NetBSD: info_ndbm.c,v 1.1.1.3 2015/01/17 16:34:15 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1997-2014 Erez Zadok 5 * Copyright (c) 1989 Jan-Simon Pendry 6 * Copyright (c) 1989 Imperial College of Science, Technology & Medicine 7 * Copyright (c) 1989 The Regents of the University of California. 8 * All rights reserved. 9 * 10 * This code is derived from software contributed to Berkeley by 11 * Jan-Simon Pendry at Imperial College, London. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * 38 * File: am-utils/amd/info_ndbm.c 39 * 40 */ 41 42 /* 43 * Get info from NDBM map 44 */ 45 46 #ifdef HAVE_CONFIG_H 47 # include <config.h> 48 #endif /* HAVE_CONFIG_H */ 49 #include <am_defs.h> 50 #include <amd.h> 51 #include <sun_map.h> 52 53 /* forward declarations */ 54 int ndbm_init(mnt_map *m, char *map, time_t *tp); 55 int ndbm_mtime(mnt_map *m, char *map, time_t *tp); 56 int ndbm_search(mnt_map *m, char *map, char *key, char **pval, time_t *tp); 57 58 59 static int 60 search_ndbm(mnt_map *m, DBM *db, char *key, char **val) 61 { 62 datum k, v; 63 64 k.dptr = key; 65 k.dsize = strlen(key) + 1; 66 v = dbm_fetch(db, k); 67 if (v.dptr) { 68 if (m->cfm && (m->cfm->cfm_flags & CFM_SUN_MAP_SYNTAX)) 69 *val = sun_entry2amd(key, v.dptr); 70 else 71 *val = xstrdup(v.dptr); 72 return 0; 73 } 74 return ENOENT; 75 } 76 77 78 int 79 ndbm_search(mnt_map *m, char *map, char *key, char **pval, time_t *tp) 80 { 81 DBM *db; 82 83 db = dbm_open(map, O_RDONLY, 0); 84 if (db) { 85 struct stat stb; 86 int error; 87 #ifdef DBM_SUFFIX 88 char dbfilename[256]; 89 90 xstrlcpy(dbfilename, map, sizeof(dbfilename)); 91 xstrlcat(dbfilename, DBM_SUFFIX, sizeof(dbfilename)); 92 error = stat(dbfilename, &stb); 93 #else /* not DBM_SUFFIX */ 94 error = fstat(dbm_pagfno(db), &stb); 95 #endif /* not DBM_SUFFIX */ 96 if (!error && *tp < stb.st_mtime) { 97 *tp = stb.st_mtime; 98 error = -1; 99 } else { 100 error = search_ndbm(m, db, key, pval); 101 } 102 (void) dbm_close(db); 103 return error; 104 } 105 return errno; 106 } 107 108 109 int 110 ndbm_init(mnt_map *m, char *map, time_t *tp) 111 { 112 DBM *db; 113 114 db = dbm_open(map, O_RDONLY, 0); 115 if (db) { 116 struct stat stb; 117 int error; 118 #ifdef DBM_SUFFIX 119 char dbfilename[256]; 120 121 xstrlcpy(dbfilename, map, sizeof(dbfilename)); 122 xstrlcat(dbfilename, DBM_SUFFIX, sizeof(dbfilename)); 123 error = stat(dbfilename, &stb); 124 #else /* not DBM_SUFFIX */ 125 error = fstat(dbm_pagfno(db), &stb); 126 #endif /* not DBM_SUFFIX */ 127 if (error < 0) 128 *tp = clocktime(NULL); 129 else 130 *tp = stb.st_mtime; 131 dbm_close(db); 132 return 0; 133 } 134 return errno; 135 } 136 137 138 int 139 ndbm_mtime(mnt_map *m, char *map, time_t *tp) 140 { 141 return ndbm_init(m,map, tp); 142 } 143