/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (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 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <signal.h>
#include <stdio.h>
#include <stdio_ext.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define _FILE_FD_MAX 255
/*
* This 32-bit only preloadable library enables extended fd FILE's.
*/
#pragma init(init_STDIO_bad_fd)
void
init_STDIO_bad_fd(void)
{
int action = -1; /* default signal */
int closed_fd = -1; /* default fd */
char *ptr;
int signal;
int retval;
/*
* user specified badfd
*/
if ((ptr = getenv("_STDIO_BADFD")) != NULL) {
closed_fd = atoi(ptr);
if (closed_fd < 3 || closed_fd > _FILE_FD_MAX) {
(void) fprintf(stderr, "File descriptor must be"
" in the range 3-%d inclusive.\n", _FILE_FD_MAX);
exit(1);
}
}
/*
* user specified action
*/
if ((ptr = getenv("_STDIO_BADFD_SIGNAL")) != NULL) {
/* accept numbers or symbolic names */
if (strncmp(ptr, "SIG", 3) == 0) /* begins with "SIG"? */
ptr = ptr + 3;
retval = str2sig(ptr, &signal);
if (retval == -1) {
(void) fprintf(stderr,
"Invalid signal name or number.\n");
exit(1);
}
action = signal;
}
if ((closed_fd = enable_extended_FILE_stdio(closed_fd, action)) == -1) {
perror("enable_extended_FILE_stdio(3C)");
exit(1);
}
}