a5f69788de7ac07553de47f7fec8c05a9a94c105craigm/*
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm * CDDL HEADER START
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm *
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm * The contents of this file are subject to the terms of the
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm * Common Development and Distribution License (the "License").
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm * You may not use this file except in compliance with the License.
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm *
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm * or http://www.opensolaris.org/os/licensing.
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm * See the License for the specific language governing permissions
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm * and limitations under the License.
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm *
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm * When distributing Covered Code, include this CDDL HEADER in each
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm * If applicable, add the following below this CDDL HEADER, with the
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm * fields enclosed by brackets "[]" replaced with your own identifying
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm * information: Portions Copyright [yyyy] [name of copyright owner]
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm *
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm * CDDL HEADER END
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm */
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm/*
7257d1b4d25bfac0c802847390e98a464fd787acraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm * Use is subject to license terms.
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm */
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm#pragma ident "%Z%%M% %I% %E% SMI"
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm#include <sys/types.h>
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm#include <errno.h>
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm#include <fcntl.h>
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm#include <limits.h>
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm#include <signal.h>
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm#include <stdio.h>
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm#include <stdio_ext.h>
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm#include <stdlib.h>
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm#include <string.h>
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm#include <unistd.h>
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm#define _FILE_FD_MAX 255
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm/*
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm * This 32-bit only preloadable library enables extended fd FILE's.
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm */
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm#pragma init(init_STDIO_bad_fd)
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm
a5f69788de7ac07553de47f7fec8c05a9a94c105craigmvoid
a5f69788de7ac07553de47f7fec8c05a9a94c105craigminit_STDIO_bad_fd(void)
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm{
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm int action = -1; /* default signal */
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm int closed_fd = -1; /* default fd */
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm char *ptr;
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm int signal;
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm int retval;
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm /*
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm * user specified badfd
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm */
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm if ((ptr = getenv("_STDIO_BADFD")) != NULL) {
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm closed_fd = atoi(ptr);
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm if (closed_fd < 3 || closed_fd > _FILE_FD_MAX) {
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm (void) fprintf(stderr, "File descriptor must be"
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm " in the range 3-%d inclusive.\n", _FILE_FD_MAX);
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm exit(1);
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm }
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm }
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm /*
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm * user specified action
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm */
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm if ((ptr = getenv("_STDIO_BADFD_SIGNAL")) != NULL) {
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm /* accept numbers or symbolic names */
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm if (strncmp(ptr, "SIG", 3) == 0) /* begins with "SIG"? */
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm ptr = ptr + 3;
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm retval = str2sig(ptr, &signal);
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm if (retval == -1) {
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm (void) fprintf(stderr,
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm "Invalid signal name or number.\n");
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm exit(1);
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm }
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm action = signal;
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm }
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm if ((closed_fd = enable_extended_FILE_stdio(closed_fd, action)) == -1) {
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm perror("enable_extended_FILE_stdio(3C)");
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm exit(1);
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm }
a5f69788de7ac07553de47f7fec8c05a9a94c105craigm}