checkver.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <rpc/trace.h>
# define VSTR "# VERSION="
/*
* check_version - check to make sure designated file is the correct version
* returns : 0 - version correct
* 1 - version incorrect
* 2 - could not open file
* 3 - corrupt file
*/
int
check_version(ver, fname)
int ver;
char *fname;
{
FILE *fp; /* file pointer for sactab */
char line[BUFSIZ]; /* temp buffer for input */
char *p; /* working pointer */
int version; /* version number from sactab */
trace2(TR_check_version, 0, ver);
if ((fp = fopen(fname, "r")) == NULL) {
trace2(TR_check_version, 1, ver);
return(2);
}
p = line;
while (fgets(p, BUFSIZ, fp)) {
if (!strncmp(p, VSTR, strlen(VSTR))) {
p += strlen(VSTR);
if (*p)
version = atoi(p);
else {
trace2(TR_check_version, 1, ver);
return(3);
}
(void) fclose(fp);
trace2(TR_check_version, 1, ver);
return((version != ver) ? 1 : 0);
}
p = line;
}
trace2(TR_check_version, 1, ver);
return(3);
}