10Sstevel@tonic-gate /*
20Sstevel@tonic-gate * CDDL HEADER START
30Sstevel@tonic-gate *
40Sstevel@tonic-gate * The contents of this file are subject to the terms of the
55006Sek110237 * Common Development and Distribution License (the "License").
65006Sek110237 * You may not use this file except in compliance with the License.
70Sstevel@tonic-gate *
80Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
90Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
100Sstevel@tonic-gate * See the License for the specific language governing permissions
110Sstevel@tonic-gate * and limitations under the License.
120Sstevel@tonic-gate *
130Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
140Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
150Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
160Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
170Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
180Sstevel@tonic-gate *
190Sstevel@tonic-gate * CDDL HEADER END
200Sstevel@tonic-gate */
21*6812Sraf
220Sstevel@tonic-gate /*
23*6812Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
240Sstevel@tonic-gate * Use is subject to license terms.
250Sstevel@tonic-gate */
260Sstevel@tonic-gate
270Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */
280Sstevel@tonic-gate /* All Rights Reserved */
290Sstevel@tonic-gate
30*6812Sraf #pragma ident "%Z%%M% %I% %E% SMI"
310Sstevel@tonic-gate
320Sstevel@tonic-gate /*
330Sstevel@tonic-gate * Attach a STREAMS or door based file descriptor to an object in the file
340Sstevel@tonic-gate * system name space.
350Sstevel@tonic-gate */
36*6812Sraf
37*6812Sraf #pragma weak _fattach = fattach
38*6812Sraf
39*6812Sraf #include "lint.h"
400Sstevel@tonic-gate #include <sys/types.h>
410Sstevel@tonic-gate #include <errno.h>
420Sstevel@tonic-gate #include <stdio.h>
430Sstevel@tonic-gate #include <stropts.h>
440Sstevel@tonic-gate #include <sys/door.h>
450Sstevel@tonic-gate #include <sys/fs/namenode.h>
460Sstevel@tonic-gate #include <sys/mount.h>
470Sstevel@tonic-gate #include <unistd.h>
480Sstevel@tonic-gate #include <string.h>
490Sstevel@tonic-gate #include "libc.h"
500Sstevel@tonic-gate
510Sstevel@tonic-gate int
fattach(int fildes,const char * path)520Sstevel@tonic-gate fattach(int fildes, const char *path)
530Sstevel@tonic-gate {
540Sstevel@tonic-gate struct namefd namefdp;
550Sstevel@tonic-gate struct door_info dinfo;
560Sstevel@tonic-gate int s;
570Sstevel@tonic-gate char buf[MAXPATHLEN];
580Sstevel@tonic-gate
590Sstevel@tonic-gate /* Only STREAMS and doors allowed to be mounted */
600Sstevel@tonic-gate if ((s = isastream(fildes)) == 1 || __door_info(fildes, &dinfo) == 0) {
610Sstevel@tonic-gate namefdp.fd = fildes;
620Sstevel@tonic-gate if (path == NULL || *path == '\0') {
630Sstevel@tonic-gate errno = ENOENT;
640Sstevel@tonic-gate return (-1);
650Sstevel@tonic-gate } else if (*path != '/') {
660Sstevel@tonic-gate /*
670Sstevel@tonic-gate * The mount point must be an absolute path.
680Sstevel@tonic-gate */
690Sstevel@tonic-gate if (getcwd(buf, sizeof (buf)) == NULL) {
700Sstevel@tonic-gate /* errno already set */
710Sstevel@tonic-gate return (-1);
720Sstevel@tonic-gate }
730Sstevel@tonic-gate /*
740Sstevel@tonic-gate * The kernel will truncate the path if it would have
750Sstevel@tonic-gate * turned into something more than MAXPATHLEN bytes.
760Sstevel@tonic-gate * So we do the same here.
770Sstevel@tonic-gate */
780Sstevel@tonic-gate if (strlcat(buf, "/", sizeof (buf)) >= sizeof (buf) ||
790Sstevel@tonic-gate strlcat(buf, path, sizeof (buf)) >= sizeof (buf)) {
800Sstevel@tonic-gate errno = ENAMETOOLONG;
810Sstevel@tonic-gate return (-1);
820Sstevel@tonic-gate }
830Sstevel@tonic-gate path = buf;
840Sstevel@tonic-gate }
850Sstevel@tonic-gate return (mount((char *)NULL, path, MS_DATA|MS_NOMNTTAB,
860Sstevel@tonic-gate (const char *)"namefs", (char *)&namefdp,
870Sstevel@tonic-gate sizeof (struct namefd), NULL, 0));
880Sstevel@tonic-gate } else if (s == 0) {
890Sstevel@tonic-gate /* Not a STREAM */
900Sstevel@tonic-gate errno = EINVAL;
910Sstevel@tonic-gate return (-1);
920Sstevel@tonic-gate } else {
930Sstevel@tonic-gate /* errno already set */
940Sstevel@tonic-gate return (-1);
950Sstevel@tonic-gate }
960Sstevel@tonic-gate }
97