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
56082Smarks * Common Development and Distribution License (the "License").
66082Smarks * 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 /*
236082Smarks * 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
32*6812Sraf #pragma weak _ftok = ftok
33*6812Sraf
34*6812Sraf #include "lint.h"
356082Smarks #include "libc.h"
360Sstevel@tonic-gate #include <sys/types.h>
370Sstevel@tonic-gate #include <sys/stat.h>
380Sstevel@tonic-gate #include <sys/mkdev.h>
396082Smarks #include <sys/nvpair.h>
406082Smarks #include <fcntl.h>
416082Smarks #include <attr.h>
420Sstevel@tonic-gate
430Sstevel@tonic-gate key_t
ftok(const char * path,int id)440Sstevel@tonic-gate ftok(const char *path, int id)
450Sstevel@tonic-gate {
460Sstevel@tonic-gate struct stat64 st;
476082Smarks nvlist_t *nvp;
486082Smarks uint32_t devpiece;
496082Smarks int error;
500Sstevel@tonic-gate
516082Smarks if (stat64(path, &st) < 0)
526082Smarks return ((key_t)-1);
536082Smarks
546082Smarks /*
556082Smarks * if getattrat works then extract the FSID from the nvlist
566082Smarks * otherwise, just fall back and use the value from the stat data
576082Smarks */
586082Smarks if ((error = getattrat(AT_FDCWD, XATTR_VIEW_READONLY,
596082Smarks path, &nvp)) == 0) {
606082Smarks uint64_t value;
616082Smarks
626082Smarks if ((error = libc_nvlist_lookup_uint64(nvp,
636082Smarks A_FSID, &value)) == 0)
646082Smarks devpiece = value & 0xfff;
656082Smarks libc_nvlist_free(nvp);
666082Smarks }
676082Smarks
686082Smarks if (error)
696082Smarks devpiece = st.st_dev & 0xfff;
706082Smarks
716082Smarks return ((key_t)((key_t)id << 24 | devpiece << 12 |
726082Smarks ((uint32_t)st.st_ino & 0x0fff)));
730Sstevel@tonic-gate }
74