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