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 5*3453Sraf * Common Development and Distribution License (the "License"). 6*3453Sraf * 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*3453Sraf 220Sstevel@tonic-gate /* 23*3453Sraf * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 240Sstevel@tonic-gate * Use is subject to license terms. 250Sstevel@tonic-gate */ 260Sstevel@tonic-gate 270Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 280Sstevel@tonic-gate 290Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */ 300Sstevel@tonic-gate /* All Rights Reserved */ 310Sstevel@tonic-gate 320Sstevel@tonic-gate /* 330Sstevel@tonic-gate * telldir -- C library extension routine 340Sstevel@tonic-gate */ 350Sstevel@tonic-gate 360Sstevel@tonic-gate #include <sys/isa_defs.h> 370Sstevel@tonic-gate 380Sstevel@tonic-gate #if !defined(_LP64) 390Sstevel@tonic-gate #pragma weak telldir64 = _telldir64 400Sstevel@tonic-gate #endif 410Sstevel@tonic-gate #pragma weak telldir = _telldir 420Sstevel@tonic-gate 430Sstevel@tonic-gate #include "synonyms.h" 44*3453Sraf #include "libc.h" 450Sstevel@tonic-gate #include <mtlib.h> 460Sstevel@tonic-gate #include <dirent.h> 470Sstevel@tonic-gate #include <errno.h> 480Sstevel@tonic-gate #include <limits.h> 490Sstevel@tonic-gate #include <fcntl.h> 500Sstevel@tonic-gate #include <unistd.h> 510Sstevel@tonic-gate 520Sstevel@tonic-gate #ifdef _LP64 530Sstevel@tonic-gate 540Sstevel@tonic-gate long 550Sstevel@tonic-gate telldir(DIR *dirp) 560Sstevel@tonic-gate { 57*3453Sraf private_DIR *pdirp = (private_DIR *)dirp; 58*3453Sraf dirent_t *dp; 59*3453Sraf off_t off = 0; 600Sstevel@tonic-gate 61*3453Sraf lmutex_lock(&pdirp->dd_lock); 620Sstevel@tonic-gate /* if at beginning of dir, return 0 */ 630Sstevel@tonic-gate if (lseek(dirp->dd_fd, 0, SEEK_CUR) != 0) { 64*3453Sraf dp = (dirent_t *)(uintptr_t)(&dirp->dd_buf[dirp->dd_loc]); 650Sstevel@tonic-gate off = dp->d_off; 660Sstevel@tonic-gate } 67*3453Sraf lmutex_unlock(&pdirp->dd_lock); 680Sstevel@tonic-gate return (off); 690Sstevel@tonic-gate } 700Sstevel@tonic-gate 710Sstevel@tonic-gate #else 720Sstevel@tonic-gate 730Sstevel@tonic-gate static off64_t 740Sstevel@tonic-gate telldir64(DIR *dirp) 750Sstevel@tonic-gate { 76*3453Sraf private_DIR *pdirp = (private_DIR *)(uintptr_t)dirp; 77*3453Sraf dirent64_t *dp64; 780Sstevel@tonic-gate off64_t off = 0; 790Sstevel@tonic-gate 80*3453Sraf lmutex_lock(&pdirp->dd_lock); 810Sstevel@tonic-gate /* if at beginning of dir, return 0 */ 820Sstevel@tonic-gate if (lseek64(dirp->dd_fd, 0, SEEK_CUR) != 0) { 83*3453Sraf dp64 = (dirent64_t *)(uintptr_t)(&dirp->dd_buf[dirp->dd_loc]); 840Sstevel@tonic-gate /* was converted by readdir and needs to be reversed */ 850Sstevel@tonic-gate if (dp64->d_ino == (ino64_t)-1) { 86*3453Sraf dirent_t *dp32; 870Sstevel@tonic-gate 88*3453Sraf dp32 = (dirent_t *)((uintptr_t)dp64 + sizeof (ino64_t)); 890Sstevel@tonic-gate dp64->d_ino = (ino64_t)dp32->d_ino; 900Sstevel@tonic-gate dp64->d_off = (off64_t)dp32->d_off; 910Sstevel@tonic-gate dp64->d_reclen = (unsigned short)(dp32->d_reclen + 92*3453Sraf ((char *)&dp64->d_off - (char *)dp64)); 930Sstevel@tonic-gate } 940Sstevel@tonic-gate off = dp64->d_off; 950Sstevel@tonic-gate } 96*3453Sraf lmutex_unlock(&pdirp->dd_lock); 970Sstevel@tonic-gate return (off); 980Sstevel@tonic-gate } 990Sstevel@tonic-gate 1000Sstevel@tonic-gate long 1010Sstevel@tonic-gate telldir(DIR *dirp) 1020Sstevel@tonic-gate { 1030Sstevel@tonic-gate off64_t off; 1040Sstevel@tonic-gate 1050Sstevel@tonic-gate off = telldir64(dirp); 1060Sstevel@tonic-gate 1070Sstevel@tonic-gate /* 1080Sstevel@tonic-gate * Make sure that the offset fits in 32 bits. 1090Sstevel@tonic-gate */ 110*3453Sraf if ((long)off != off && (uint64_t)off > (uint64_t)UINT32_MAX) { 1110Sstevel@tonic-gate errno = EOVERFLOW; 1120Sstevel@tonic-gate return (-1); 1130Sstevel@tonic-gate } 1140Sstevel@tonic-gate return ((long)off); 1150Sstevel@tonic-gate } 1160Sstevel@tonic-gate 1170Sstevel@tonic-gate #endif /* _LP64 */ 118