NetBSD/dist/am-utils/amd/info_ndbm.c

144 lines
4.0 KiB
C

/* $NetBSD: info_ndbm.c,v 1.1.1.4 2001/05/13 17:50:14 veego Exp $ */
/*
* Copyright (c) 1997-2001 Erez Zadok
* Copyright (c) 1989 Jan-Simon Pendry
* Copyright (c) 1989 Imperial College of Science, Technology & Medicine
* Copyright (c) 1989 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Jan-Simon Pendry at Imperial College, London.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgment:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* %W% (Berkeley) %G%
*
* Id: info_ndbm.c,v 1.3.2.1 2001/01/10 03:23:06 ezk Exp
*
*/
/*
* Get info from NDBM map
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <am_defs.h>
#include <amd.h>
/* forward declarations */
int ndbm_init(mnt_map *m, char *map, time_t *tp);
int ndbm_mtime(mnt_map *m, char *map, time_t *tp);
int ndbm_search(mnt_map *m, char *map, char *key, char **pval, time_t *tp);
static int
search_ndbm(DBM *db, char *key, char **val)
{
datum k, v;
k.dptr = key;
k.dsize = strlen(key) + 1;
v = dbm_fetch(db, k);
if (v.dptr) {
*val = strdup(v.dptr);
return 0;
}
return ENOENT;
}
int
ndbm_search(mnt_map *m, char *map, char *key, char **pval, time_t *tp)
{
DBM *db;
db = dbm_open(map, O_RDONLY, 0);
if (db) {
struct stat stb;
int error;
#ifdef DBM_SUFFIX
char dbfilename[256];
strcpy(dbfilename, map);
strcat(dbfilename, DBM_SUFFIX);
error = stat(dbfilename, &stb);
#else /* not DBM_SUFFIX */
error = fstat(dbm_pagfno(db), &stb);
#endif /* not DBM_SUFFIX */
if (!error && *tp < stb.st_mtime) {
*tp = stb.st_mtime;
error = -1;
} else {
error = search_ndbm(db, key, pval);
}
(void) dbm_close(db);
return error;
}
return errno;
}
int
ndbm_init(mnt_map *m, char *map, time_t *tp)
{
DBM *db;
db = dbm_open(map, O_RDONLY, 0);
if (db) {
struct stat stb;
int error;
#ifdef DBM_SUFFIX
char dbfilename[256];
strcpy(dbfilename, map);
strcat(dbfilename, DBM_SUFFIX);
error = stat(dbfilename, &stb);
#else /* not DBM_SUFFIX */
error = fstat(dbm_pagfno(db), &stb);
#endif /* not DBM_SUFFIX */
if (error < 0)
*tp = clocktime();
else
*tp = stb.st_mtime;
dbm_close(db);
return 0;
}
return errno;
}
int
ndbm_mtime(mnt_map *m, char *map, time_t *tp)
{
return ndbm_init(m,map, tp);
}