17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5d8ac9b2dSmarks * Common Development and Distribution License (the "License"). 6d8ac9b2dSmarks * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 21*7257d1b4Sraf 227c478bd9Sstevel@tonic-gate /* 23d8ac9b2dSmarks * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 247c478bd9Sstevel@tonic-gate * Use is subject to license terms. 257c478bd9Sstevel@tonic-gate */ 267c478bd9Sstevel@tonic-gate 277c478bd9Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */ 287c478bd9Sstevel@tonic-gate /* All Rights Reserved */ 297c478bd9Sstevel@tonic-gate 30*7257d1b4Sraf #pragma ident "%Z%%M% %I% %E% SMI" 317c478bd9Sstevel@tonic-gate 32*7257d1b4Sraf #pragma weak _ftok = ftok 33*7257d1b4Sraf 34*7257d1b4Sraf #include "lint.h" 35d8ac9b2dSmarks #include "libc.h" 367c478bd9Sstevel@tonic-gate #include <sys/types.h> 377c478bd9Sstevel@tonic-gate #include <sys/stat.h> 387c478bd9Sstevel@tonic-gate #include <sys/mkdev.h> 39d8ac9b2dSmarks #include <sys/nvpair.h> 40d8ac9b2dSmarks #include <fcntl.h> 41d8ac9b2dSmarks #include <attr.h> 427c478bd9Sstevel@tonic-gate 437c478bd9Sstevel@tonic-gate key_t 447c478bd9Sstevel@tonic-gate ftok(const char *path, int id) 457c478bd9Sstevel@tonic-gate { 467c478bd9Sstevel@tonic-gate struct stat64 st; 47d8ac9b2dSmarks nvlist_t *nvp; 48d8ac9b2dSmarks uint32_t devpiece; 49d8ac9b2dSmarks int error; 507c478bd9Sstevel@tonic-gate 51d8ac9b2dSmarks if (stat64(path, &st) < 0) 52d8ac9b2dSmarks return ((key_t)-1); 53d8ac9b2dSmarks 54d8ac9b2dSmarks /* 55d8ac9b2dSmarks * if getattrat works then extract the FSID from the nvlist 56d8ac9b2dSmarks * otherwise, just fall back and use the value from the stat data 57d8ac9b2dSmarks */ 58d8ac9b2dSmarks if ((error = getattrat(AT_FDCWD, XATTR_VIEW_READONLY, 59d8ac9b2dSmarks path, &nvp)) == 0) { 60d8ac9b2dSmarks uint64_t value; 61d8ac9b2dSmarks 62d8ac9b2dSmarks if ((error = libc_nvlist_lookup_uint64(nvp, 63d8ac9b2dSmarks A_FSID, &value)) == 0) 64d8ac9b2dSmarks devpiece = value & 0xfff; 65d8ac9b2dSmarks libc_nvlist_free(nvp); 66d8ac9b2dSmarks } 67d8ac9b2dSmarks 68d8ac9b2dSmarks if (error) 69d8ac9b2dSmarks devpiece = st.st_dev & 0xfff; 70d8ac9b2dSmarks 71d8ac9b2dSmarks return ((key_t)((key_t)id << 24 | devpiece << 12 | 72d8ac9b2dSmarks ((uint32_t)st.st_ino & 0x0fff))); 737c478bd9Sstevel@tonic-gate } 74