1 /* 2 * Copyright (c) 2002 Tim J. Robbins. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 /* 28 * Copyright 2010 Nexenta Systems, Inc. All rights reserved. 29 * Use is subject to license terms. 30 */ 31 32 #include "lint.h" 33 #include "mse_int.h" 34 #include "file64.h" 35 #include "mse.h" 36 #include <errno.h> 37 #include <stdio.h> 38 #include <wchar.h> 39 #include "mblocal.h" 40 41 int 42 fwide(FILE *fp, int mode) 43 { 44 int m; 45 rmutex_t *lk; 46 47 FLOCKFILE(lk, fp); 48 /* Only change the orientation if the stream is not oriented yet. */ 49 m = _getorientation(fp); 50 if (mode != 0 && m == _NO_MODE) 51 _setorientation(fp, (mode > 0) ? _WC_MODE : _BYTE_MODE); 52 FUNLOCKFILE(lk); 53 54 switch (m) { 55 case _WC_MODE: 56 mode = 1; 57 break; 58 case _NO_MODE: 59 mode = 0; 60 break; 61 case _BYTE_MODE: 62 mode = -1; 63 break; 64 } 65 66 return (mode); 67 } 68