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124 lines
3.3 KiB
C
124 lines
3.3 KiB
C
/*
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* Copyright (c) 1989 Jan-Simon Pendry
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* Copyright (c) 1989 Imperial College of Science, Technology & Medicine
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Jan-Simon Pendry at Imperial College, London.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)info_ndbm.c 8.1 (Berkeley) 6/6/93
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*
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* $Id: info_ndbm.c,v 5.2.2.1 1992/02/09 15:08:31 jsp beta $
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*
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*/
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/*
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* Get info from NDBM map
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*/
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#include "am.h"
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#ifdef HAS_NDBM_MAPS
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#include <ndbm.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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static int search_ndbm P((DBM *db, char *key, char **val));
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static int search_ndbm(db, key, val)
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DBM *db;
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char *key;
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char **val;
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{
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datum k, v;
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k.dptr = key;
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k.dsize = strlen(key) + 1;
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v = dbm_fetch(db, k);
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if (v.dptr) {
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*val = strdup(v.dptr);
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return 0;
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}
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return ENOENT;
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}
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int ndbm_search P((mnt_map *m, char *map, char *key, char **pval, time_t *tp));
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int ndbm_search(m, map, key, pval, tp)
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mnt_map *m;
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char *map;
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char *key;
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char **pval;
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time_t *tp;
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{
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DBM *db;
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db = dbm_open(map, O_RDONLY, 0);
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if (db) {
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struct stat stb;
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int error;
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error = fstat(dbm_pagfno(db), &stb);
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if (!error && *tp < stb.st_mtime) {
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*tp = stb.st_mtime;
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error = -1;
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} else {
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error = search_ndbm(db, key, pval);
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}
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(void) dbm_close(db);
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return error;
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}
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return errno;
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}
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int ndbm_init P((char *map, time_t *tp));
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int ndbm_init(map, tp)
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char *map;
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time_t *tp;
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{
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DBM *db;
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db = dbm_open(map, O_RDONLY, 0);
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if (db) {
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struct stat stb;
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if (fstat(dbm_pagfno(db), &stb) < 0)
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*tp = clocktime();
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else
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*tp = stb.st_mtime;
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dbm_close(db);
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return 0;
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}
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return errno;
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}
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#endif /* HAS_NDBM_MAPS */
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