4129113128
Bug: http://b/153926671 Test: 32/64-bit bionic-unit-tests on blueline, x86_64 emulator Change-Id: If42905f3d6a76ed70a45e5b9edd029ffd7789045
95 lines
4.7 KiB
C
95 lines
4.7 KiB
C
/*
|
|
* Copyright (C) 2019 The Android Open Source Project
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
|
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <sys/cdefs.h>
|
|
#include <stdatomic.h>
|
|
|
|
#include "platform/bionic/fdtrack.h"
|
|
|
|
#include "bionic/pthread_internal.h"
|
|
#include "private/bionic_tls.h"
|
|
#include "private/ErrnoRestorer.h"
|
|
|
|
extern "C" _Atomic(android_fdtrack_hook_t) __android_fdtrack_hook;
|
|
|
|
// Macro to record file descriptor creation.
|
|
// e.g.:
|
|
// int socket(int domain, int type, int protocol) {
|
|
// return FDTRACK_CREATE_NAME("socket", __socket(domain, type, protocol));
|
|
// }
|
|
#define FDTRACK_CREATE_NAME(name, fd_value) \
|
|
({ \
|
|
int __fd = (fd_value); \
|
|
if (__fd != -1 && __predict_false(__android_fdtrack_hook) && \
|
|
!__predict_false(__get_thread()->is_vforked())) { \
|
|
bionic_tls& tls = __get_bionic_tls(); \
|
|
/* fdtrack_disabled is only true during reentrant calls. */ \
|
|
if (!__predict_false(tls.fdtrack_disabled)) { \
|
|
ErrnoRestorer r; \
|
|
tls.fdtrack_disabled = true; \
|
|
android_fdtrack_event event; \
|
|
event.fd = __fd; \
|
|
event.type = ANDROID_FDTRACK_EVENT_TYPE_CREATE; \
|
|
event.data.create.function_name = name; \
|
|
__android_fdtrack_hook(&event); \
|
|
tls.fdtrack_disabled = false; \
|
|
} \
|
|
} \
|
|
__fd; \
|
|
})
|
|
|
|
// Macro to record file descriptor creation, with the current function's name.
|
|
// e.g.:
|
|
// int socket(int domain, int type, int protocol) {
|
|
// return FDTRACK_CREATE_NAME(__socket(domain, type, protocol));
|
|
// }
|
|
#define FDTRACK_CREATE(fd_value) FDTRACK_CREATE_NAME(__func__, (fd_value))
|
|
|
|
// Macro to record file descriptor closure.
|
|
// Note that this does not actually close the file descriptor.
|
|
#define FDTRACK_CLOSE(fd_value) \
|
|
({ \
|
|
int __fd = (fd_value); \
|
|
if (__fd != -1 && __predict_false(__android_fdtrack_hook) && \
|
|
!__predict_false(__get_thread()->is_vforked())) { \
|
|
bionic_tls& tls = __get_bionic_tls(); \
|
|
if (!__predict_false(tls.fdtrack_disabled)) { \
|
|
int saved_errno = errno; \
|
|
tls.fdtrack_disabled = true; \
|
|
android_fdtrack_event event; \
|
|
event.fd = __fd; \
|
|
event.type = ANDROID_FDTRACK_EVENT_TYPE_CLOSE; \
|
|
__android_fdtrack_hook(&event); \
|
|
tls.fdtrack_disabled = false; \
|
|
errno = saved_errno; \
|
|
} \
|
|
} \
|
|
__fd; \
|
|
})
|