| Elliott Hughes | 7ae3912 | 2018-02-26 16:49:43 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 The Android Open Source Project |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * * Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * * Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in |
| 12 | * the documentation and/or other materials provided with the |
| 13 | * distribution. |
| 14 | * |
| 15 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 16 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 17 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 18 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 19 | * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 21 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| 22 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| 23 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 24 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| 25 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 26 | * SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | #include <signal.h> |
| 30 | |
| 31 | #include "private/SigSetConverter.h" |
| 32 | |
| 33 | extern "C" int __rt_sigprocmask(int, const sigset64_t*, sigset64_t*, size_t); |
| 34 | |
| 35 | // |
| 36 | // These need to be kept separate from pthread_sigmask, sigblock, sigsetmask, |
| 37 | // sighold, and sigset because libsigchain only intercepts sigprocmask so we |
| 38 | // can't allow clang to decide to inline sigprocmask. |
| 39 | // |
| 40 | |
| 41 | int sigprocmask(int how, |
| 42 | const sigset_t* bionic_new_set, |
| 43 | sigset_t* bionic_old_set) __attribute__((__noinline__)) { |
| 44 | SigSetConverter new_set; |
| 45 | sigset64_t* new_set_ptr = nullptr; |
| 46 | if (bionic_new_set != nullptr) { |
| 47 | sigemptyset64(&new_set.sigset64); |
| 48 | new_set.sigset = *bionic_new_set; |
| 49 | new_set_ptr = &new_set.sigset64; |
| 50 | } |
| 51 | |
| 52 | SigSetConverter old_set; |
| 53 | if (sigprocmask64(how, new_set_ptr, &old_set.sigset64) == -1) { |
| 54 | return -1; |
| 55 | } |
| 56 | |
| 57 | if (bionic_old_set != nullptr) { |
| 58 | *bionic_old_set = old_set.sigset; |
| 59 | } |
| 60 | |
| 61 | return 0; |
| 62 | } |
| 63 | |
| 64 | int sigprocmask64(int how, |
| 65 | const sigset64_t* new_set, |
| 66 | sigset64_t* old_set) __attribute__((__noinline__)) { |
| 67 | return __rt_sigprocmask(how, new_set, old_set, sizeof(*new_set)); |
| 68 | } |