11dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project/* 21dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * Copyright (C) 2008 The Android Open Source Project 31dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * All rights reserved. 41dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 51dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * Redistribution and use in source and binary forms, with or without 61dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * modification, are permitted provided that the following conditions 71dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * are met: 81dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * * Redistributions of source code must retain the above copyright 91dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * notice, this list of conditions and the following disclaimer. 101dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * * Redistributions in binary form must reproduce the above copyright 111dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * notice, this list of conditions and the following disclaimer in 121dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * the documentation and/or other materials provided with the 131dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * distribution. 141dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 151dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 161dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 171dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 181dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 191dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 201dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 211dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 221dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 231dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 241dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 251dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 261dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * SUCH DAMAGE. 271dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project */ 28c5d028fc913de84a781bd61084bf7ae2182fd48eElliott Hughes 291dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <errno.h> 301dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <signal.h> 311dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <string.h> 321dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <time.h> 331dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 341f5af926fa626734981d6b4dcc0ab54e520032a9Elliott Hughes#include "private/kernel_sigset_t.h" 351dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 36c5d028fc913de84a781bd61084bf7ae2182fd48eElliott Hughesextern "C" int __rt_sigtimedwait(const sigset_t* uthese, siginfo_t* uinfo, const struct timespec* uts, size_t sigsetsize); 371dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 38c5d028fc913de84a781bd61084bf7ae2182fd48eElliott Hughesint sigwait(const sigset_t* set, int* sig) { 39c5d028fc913de84a781bd61084bf7ae2182fd48eElliott Hughes kernel_sigset_t sigset(set); 40c5d028fc913de84a781bd61084bf7ae2182fd48eElliott Hughes while (true) { 41c5d028fc913de84a781bd61084bf7ae2182fd48eElliott Hughes // __rt_sigtimedwait can return EAGAIN or EINTR, we need to loop 42c5d028fc913de84a781bd61084bf7ae2182fd48eElliott Hughes // around them since sigwait is only allowed to return EINVAL. 43c5d028fc913de84a781bd61084bf7ae2182fd48eElliott Hughes int result = __rt_sigtimedwait(sigset.get(), NULL, NULL, sizeof(sigset)); 44c5d028fc913de84a781bd61084bf7ae2182fd48eElliott Hughes if (result >= 0) { 45c5d028fc913de84a781bd61084bf7ae2182fd48eElliott Hughes *sig = result; 46c5d028fc913de84a781bd61084bf7ae2182fd48eElliott Hughes return 0; 471dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 481dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 49c5d028fc913de84a781bd61084bf7ae2182fd48eElliott Hughes if (errno != EAGAIN && errno != EINTR) { 50c5d028fc913de84a781bd61084bf7ae2182fd48eElliott Hughes return errno; 51c5d028fc913de84a781bd61084bf7ae2182fd48eElliott Hughes } 52c5d028fc913de84a781bd61084bf7ae2182fd48eElliott Hughes } 531dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 54