1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */ 30*0Sstevel@tonic-gate /* All Rights Reserved */ 31*0Sstevel@tonic-gate 32*0Sstevel@tonic-gate 33*0Sstevel@tonic-gate /* 34*0Sstevel@tonic-gate * telldir -- C library extension routine 35*0Sstevel@tonic-gate */ 36*0Sstevel@tonic-gate 37*0Sstevel@tonic-gate #include <sys/isa_defs.h> 38*0Sstevel@tonic-gate 39*0Sstevel@tonic-gate #if !defined(_LP64) 40*0Sstevel@tonic-gate #pragma weak telldir64 = _telldir64 41*0Sstevel@tonic-gate #endif 42*0Sstevel@tonic-gate #pragma weak telldir = _telldir 43*0Sstevel@tonic-gate 44*0Sstevel@tonic-gate #include "synonyms.h" 45*0Sstevel@tonic-gate #include <mtlib.h> 46*0Sstevel@tonic-gate #include <sys/types.h> 47*0Sstevel@tonic-gate #include <dirent.h> 48*0Sstevel@tonic-gate #include <thread.h> 49*0Sstevel@tonic-gate #include <errno.h> 50*0Sstevel@tonic-gate #include <limits.h> 51*0Sstevel@tonic-gate #include <synch.h> 52*0Sstevel@tonic-gate #include <fcntl.h> 53*0Sstevel@tonic-gate #include <stdio.h> 54*0Sstevel@tonic-gate #include <unistd.h> 55*0Sstevel@tonic-gate #include <inttypes.h> 56*0Sstevel@tonic-gate 57*0Sstevel@tonic-gate extern mutex_t _dirent_lock; 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate #ifdef _LP64 60*0Sstevel@tonic-gate 61*0Sstevel@tonic-gate long 62*0Sstevel@tonic-gate telldir(DIR *dirp) 63*0Sstevel@tonic-gate { 64*0Sstevel@tonic-gate struct dirent *dp; 65*0Sstevel@tonic-gate off_t off = 0; 66*0Sstevel@tonic-gate 67*0Sstevel@tonic-gate lmutex_lock(&_dirent_lock); 68*0Sstevel@tonic-gate /* if at beginning of dir, return 0 */ 69*0Sstevel@tonic-gate if (lseek(dirp->dd_fd, 0, SEEK_CUR) != 0) { 70*0Sstevel@tonic-gate dp = (struct dirent *)(uintptr_t)(&dirp->dd_buf[dirp->dd_loc]); 71*0Sstevel@tonic-gate off = dp->d_off; 72*0Sstevel@tonic-gate } 73*0Sstevel@tonic-gate lmutex_unlock(&_dirent_lock); 74*0Sstevel@tonic-gate return (off); 75*0Sstevel@tonic-gate } 76*0Sstevel@tonic-gate 77*0Sstevel@tonic-gate #else 78*0Sstevel@tonic-gate 79*0Sstevel@tonic-gate static off64_t 80*0Sstevel@tonic-gate telldir64(DIR *dirp) 81*0Sstevel@tonic-gate { 82*0Sstevel@tonic-gate struct dirent64 *dp64; 83*0Sstevel@tonic-gate off64_t off = 0; 84*0Sstevel@tonic-gate 85*0Sstevel@tonic-gate lmutex_lock(&_dirent_lock); 86*0Sstevel@tonic-gate /* if at beginning of dir, return 0 */ 87*0Sstevel@tonic-gate if (lseek64(dirp->dd_fd, 0, SEEK_CUR) != 0) { 88*0Sstevel@tonic-gate dp64 = (struct dirent64 *) 89*0Sstevel@tonic-gate (uintptr_t)(&dirp->dd_buf[dirp->dd_loc]); 90*0Sstevel@tonic-gate /* was converted by readdir and needs to be reversed */ 91*0Sstevel@tonic-gate if (dp64->d_ino == (ino64_t)-1) { 92*0Sstevel@tonic-gate struct dirent *dp32; 93*0Sstevel@tonic-gate 94*0Sstevel@tonic-gate dp32 = (struct dirent *) 95*0Sstevel@tonic-gate ((uintptr_t)dp64 + sizeof (ino64_t)); 96*0Sstevel@tonic-gate dp64->d_ino = (ino64_t)dp32->d_ino; 97*0Sstevel@tonic-gate dp64->d_off = (off64_t)dp32->d_off; 98*0Sstevel@tonic-gate dp64->d_reclen = (unsigned short)(dp32->d_reclen + 99*0Sstevel@tonic-gate ((char *)&dp64->d_off - (char *)dp64)); 100*0Sstevel@tonic-gate } 101*0Sstevel@tonic-gate off = dp64->d_off; 102*0Sstevel@tonic-gate } 103*0Sstevel@tonic-gate lmutex_unlock(&_dirent_lock); 104*0Sstevel@tonic-gate return (off); 105*0Sstevel@tonic-gate } 106*0Sstevel@tonic-gate 107*0Sstevel@tonic-gate long 108*0Sstevel@tonic-gate telldir(DIR *dirp) 109*0Sstevel@tonic-gate { 110*0Sstevel@tonic-gate off64_t off; 111*0Sstevel@tonic-gate 112*0Sstevel@tonic-gate off = telldir64(dirp); 113*0Sstevel@tonic-gate 114*0Sstevel@tonic-gate /* 115*0Sstevel@tonic-gate * Make sure that the offset fits in 32 bits. 116*0Sstevel@tonic-gate */ 117*0Sstevel@tonic-gate if ((long)off != off && 118*0Sstevel@tonic-gate (uint64_t)off > (uint64_t)UINT32_MAX) { 119*0Sstevel@tonic-gate errno = EOVERFLOW; 120*0Sstevel@tonic-gate return (-1); 121*0Sstevel@tonic-gate } 122*0Sstevel@tonic-gate return ((long)off); 123*0Sstevel@tonic-gate } 124*0Sstevel@tonic-gate 125*0Sstevel@tonic-gate #endif /* _LP64 */ 126