/*
 * 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   */

#include "mail.h"
/*
        Generic open routine.
        Exits on error with passed error value.
        Returns file pointer on success.

        Note: This should be used only for critical files
        as it will terminate mail(1) on failure.
*/
FILE *
doopen(char *file, char *type, int errnum)
{
        static char pn[] = "doopen";
        FILE *fptr;
        struct stat st;

        if ((stat(file, &st) < 0 && errno == EOVERFLOW) ||
                (fptr = fopen(file, type)) == NULL) {
                fprintf(stderr,
                        "%s: Can't open '%s' type: %s\n",program,file,type);
                error = errnum;
                sav_errno = errno;
                Dout(pn, 0, "can't open '%s' type: %s\n",program,file,type);
                Dout(pn, 0, "error set to %d\n", error);
                done(0);
        }
        return(fptr);
}