2f85740ecc
2.) Add a wrapper function __findenv() which implements the previous
*internal* interface. It turns out that ld.elf_so(1) and pthread(3)
both use it.
Stripping e.g. "LD_LIBRARY_PATH" from the environment while running
setuid binaries works again now.
66 lines
2.0 KiB
C
66 lines
2.0 KiB
C
/* $NetBSD: env.h,v 1.2 2010/11/14 22:04:36 tron Exp $ */
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/*-
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* Copyright (c) 2010 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Matthias Scheler.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/types.h>
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#include <stdbool.h>
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#include "reentrant.h"
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extern ssize_t __getenvslot(const char *name, size_t l_name, bool allocate);
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extern char *__findenvvar(const char *name, size_t l_name);
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#ifdef _REENTRANT
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extern bool __readlockenv(void);
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extern bool __writelockenv(void);
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extern bool __unlockenv(void);
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#else
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static __inline bool
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__readlockenv(void)
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{
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return true;
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}
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static __inline bool
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__writelockenv(void)
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{
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return true;
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}
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static __inline bool
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__unlocklockenv(void)
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{
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return true;
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}
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#endif
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extern char **environ;
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