2N/A/*
2N/A * CDDL HEADER START
2N/A *
2N/A * The contents of this file are subject to the terms of the
2N/A * Common Development and Distribution License (the "License").
2N/A * You may not use this file except in compliance with the License.
2N/A *
2N/A * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
2N/A * or http://www.opensolaris.org/os/licensing.
2N/A * See the License for the specific language governing permissions
2N/A * and limitations under the License.
2N/A *
2N/A * When distributing Covered Code, include this CDDL HEADER in each
2N/A * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
2N/A * If applicable, add the following below this CDDL HEADER, with the
2N/A * fields enclosed by brackets "[]" replaced with your own identifying
2N/A * information: Portions Copyright [yyyy] [name of copyright owner]
2N/A *
2N/A * CDDL HEADER END
2N/A */
2N/A
2N/A/*
2N/A * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
2N/A * Use is subject to license terms.
2N/A */
2N/A
2N/A/* Copyright (c) 1988 AT&T */
2N/A/* All Rights Reserved */
2N/A
2N/A#pragma ident "%Z%%M% %I% %E% SMI"
2N/A
2N/A/*
2N/A * Attach a STREAMS or door based file descriptor to an object in the file
2N/A * system name space.
2N/A */
2N/A
2N/A#pragma weak _fattach = fattach
2N/A
2N/A#include "lint.h"
2N/A#include <sys/types.h>
2N/A#include <errno.h>
2N/A#include <stdio.h>
2N/A#include <stropts.h>
2N/A#include <sys/door.h>
2N/A#include <sys/fs/namenode.h>
2N/A#include <sys/mount.h>
2N/A#include <unistd.h>
2N/A#include <string.h>
2N/A#include "libc.h"
2N/A
2N/Aint
2N/Afattach(int fildes, const char *path)
2N/A{
2N/A struct namefd namefdp;
2N/A struct door_info dinfo;
2N/A int s;
2N/A char buf[MAXPATHLEN];
2N/A
2N/A /* Only STREAMS and doors allowed to be mounted */
2N/A if ((s = isastream(fildes)) == 1 || __door_info(fildes, &dinfo) == 0) {
2N/A namefdp.fd = fildes;
2N/A if (path == NULL || *path == '\0') {
2N/A errno = ENOENT;
2N/A return (-1);
2N/A } else if (*path != '/') {
2N/A /*
2N/A * The mount point must be an absolute path.
2N/A */
2N/A if (getcwd(buf, sizeof (buf)) == NULL) {
2N/A /* errno already set */
2N/A return (-1);
2N/A }
2N/A /*
2N/A * The kernel will truncate the path if it would have
2N/A * turned into something more than MAXPATHLEN bytes.
2N/A * So we do the same here.
2N/A */
2N/A if (strlcat(buf, "/", sizeof (buf)) >= sizeof (buf) ||
2N/A strlcat(buf, path, sizeof (buf)) >= sizeof (buf)) {
2N/A errno = ENAMETOOLONG;
2N/A return (-1);
2N/A }
2N/A path = buf;
2N/A }
2N/A return (mount((char *)NULL, path, MS_DATA|MS_NOMNTTAB,
2N/A (const char *)"namefs", (char *)&namefdp,
2N/A sizeof (struct namefd), NULL, 0));
2N/A } else if (s == 0) {
2N/A /* Not a STREAM */
2N/A errno = EINVAL;
2N/A return (-1);
2N/A } else {
2N/A /* errno already set */
2N/A return (-1);
2N/A }
2N/A}