468efc80da
pclose(3) is now an alias for fclose(3). We could add a FORTIFY check that you use pclose(3) if and only if you used popen(3), but there seems little value to that when we can just do the right thing. This patch also adds the missing locking to _fwalk --- we need to lock both the global list of FILE*s and also each FILE* we touch. POSIX says that "The popen() function shall ensure that any streams from previous popen() calls that remain open in the parent process are closed in the new child process", which we implement via _fwalk(fclose) in the child, but we might want to just make *all* popen(3) file descriptors O_CLOEXEC in all cases. Ignore fewer errors in popen(3) failure cases. Improve popen(3) test coverage. Bug: http://b/72470344 Test: ran tests Change-Id: Ic937594bf28ec88b375f7e5825b9c05f500af438
42 lines
1.7 KiB
C++
42 lines
1.7 KiB
C++
/*
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* Copyright (C) 2008 The Android Open Source Project
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* All rights reserved.
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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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* * 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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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <pthread.h>
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#include "private/thread_private.h"
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// Some simple glue used to make BSD code thread-safe.
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static pthread_mutex_t g_arc4_lock = PTHREAD_MUTEX_INITIALIZER;
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void _thread_arc4_lock() {
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pthread_mutex_lock(&g_arc4_lock);
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}
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void _thread_arc4_unlock() {
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pthread_mutex_unlock(&g_arc4_lock);
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}
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