143 lines
3.9 KiB
C
143 lines
3.9 KiB
C
/* $NetBSD: info_ndbm.c,v 1.1.1.5 2002/11/29 22:58:18 christos Exp $ */
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/*
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* Copyright (c) 1997-2002 Erez Zadok
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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 The Regents of the University of California.
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* 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 acknowledgment:
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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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*
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* Id: info_ndbm.c,v 1.6 2002/02/02 20:58:54 ezk Exp
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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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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif /* HAVE_CONFIG_H */
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#include <am_defs.h>
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#include <amd.h>
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/* forward declarations */
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int ndbm_init(mnt_map *m, char *map, time_t *tp);
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int ndbm_mtime(mnt_map *m, char *map, time_t *tp);
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int ndbm_search(mnt_map *m, char *map, char *key, char **pval, time_t *tp);
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static int
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search_ndbm(DBM *db, char *key, 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
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ndbm_search(mnt_map *m, char *map, char *key, char **pval, 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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#ifdef DBM_SUFFIX
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char dbfilename[256];
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strcpy(dbfilename, map);
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strcat(dbfilename, DBM_SUFFIX);
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error = stat(dbfilename, &stb);
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#else /* not DBM_SUFFIX */
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error = fstat(dbm_pagfno(db), &stb);
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#endif /* not DBM_SUFFIX */
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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
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ndbm_init(mnt_map *m, char *map, 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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#ifdef DBM_SUFFIX
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char dbfilename[256];
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strcpy(dbfilename, map);
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strcat(dbfilename, DBM_SUFFIX);
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error = stat(dbfilename, &stb);
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#else /* not DBM_SUFFIX */
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error = fstat(dbm_pagfno(db), &stb);
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#endif /* not DBM_SUFFIX */
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if (error < 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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int
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ndbm_mtime(mnt_map *m, char *map, time_t *tp)
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{
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return ndbm_init(m,map, tp);
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}
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