Blame debug/readonly-area.c

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/* Copyright (C) 2004-2018 Free Software Foundation, Inc.
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   This file is part of the GNU C Library.
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   The GNU C Library is free software; you can redistribute it and/or
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   modify it under the terms of the GNU Lesser General Public
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   License as published by the Free Software Foundation; either
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   version 2.1 of the License, or (at your option) any later version.
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   The GNU C Library is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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   Lesser General Public License for more details.
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   You should have received a copy of the GNU Lesser General Public
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   License along with the GNU C Library; if not, see
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   <http://www.gnu.org/licenses/>.  */
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#include <stdlib.h>
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/* Return 1 if the whole area PTR .. PTR+SIZE is not writable.
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   Return -1 if it is writable.  */
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int
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__readonly_area (const void *ptr, size_t size)
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{
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  /* We cannot determine in general whether memory is writable or not.
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     This must be handled in a system-dependent manner.  to not
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     unconditionally break code we need to return here a positive
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     answer.  This disables this security measure but that is the
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     price people have to pay for using systems without a real
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     implementation of this interface.  */
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  return 1;
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}