| 1 | /*
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| 2 | Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
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| 3 | This program and the accompanying materials are licensed and made available
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| 4 | under the terms and conditions of the BSD License that accompanies this
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| 5 | distribution. The full text of the license may be found at
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| 6 | http://opensource.org/licenses/bsd-license.
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| 7 |
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| 8 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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| 9 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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| 10 |
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| 11 | * Copyright (c)2001 Citrus Project,
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| 12 | * All rights reserved.
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| 13 | *
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| 14 | * Redistribution and use in source and binary forms, with or without
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| 15 | * modification, are permitted provided that the following conditions
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| 16 | * are met:
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| 17 | * 1. Redistributions of source code must retain the above copyright
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| 18 | * notice, this list of conditions and the following disclaimer.
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| 19 | * 2. Redistributions in binary form must reproduce the above copyright
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| 20 | * notice, this list of conditions and the following disclaimer in the
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| 21 | * documentation and/or other materials provided with the distribution.
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| 22 | *
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| 23 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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| 24 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 25 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 26 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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| 27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 28 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 29 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 30 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 31 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 32 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 33 | * SUCH DAMAGE.
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| 34 | *
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| 35 | * $Citrus$
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| 36 |
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| 37 | NetBSD: fwide.c,v 1.3 2005/06/12 05:21:27 lukem Exp
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| 38 | */
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| 39 | #include <LibConfig.h>
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| 40 | #include <sys/EfiCdefs.h>
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| 41 |
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| 42 | #include <assert.h>
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| 43 | #include <errno.h>
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| 44 | #include <stdio.h>
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| 45 | #include <wchar.h>
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| 46 | #include "reentrant.h"
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| 47 | #include "local.h"
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| 48 |
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| 49 | int
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| 50 | fwide(FILE *fp, int mode)
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| 51 | {
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| 52 | struct wchar_io_data *wcio;
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| 53 |
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| 54 | _DIAGASSERT(fp != NULL);
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| 55 | if(fp == NULL) {
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| 56 | errno = EINVAL;
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| 57 | return (0);
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| 58 | }
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| 59 |
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| 60 | /*
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| 61 | * this implementation use only -1, 0, 1
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| 62 | * for mode value.
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| 63 | * (we don't need to do this, but
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| 64 | * this can make things simpler.)
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| 65 | */
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| 66 | if (mode > 0)
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| 67 | mode = 1;
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| 68 | else if (mode < 0)
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| 69 | mode = -1;
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| 70 |
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| 71 | FLOCKFILE(fp);
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| 72 | wcio = WCIO_GET(fp);
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| 73 | if (!wcio)
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| 74 | return 0; /* XXX */
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| 75 |
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| 76 | if (wcio->wcio_mode == 0 && mode != 0)
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| 77 | wcio->wcio_mode = mode;
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| 78 | else
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| 79 | mode = wcio->wcio_mode;
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| 80 | FUNLOCKFILE(fp);
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| 81 |
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| 82 | return mode;
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| 83 | }
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