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/sigrtmin.h" 32 #include "private/SigSetConverter.h" 33 34 extern "C" int __rt_sigprocmask(int, const sigset64_t*, sigset64_t*, size_t); 35 36 // 37 // These need to be kept separate from pthread_sigmask, sigblock, sigsetmask, 38 // sighold, and sigset because libsigchain only intercepts sigprocmask so we 39 // can't allow clang to decide to inline sigprocmask. 40 // 41 42 int sigprocmask(int how, 43 const sigset_t* bionic_new_set, 44 sigset_t* bionic_old_set) __attribute__((__noinline__)) { 45 SigSetConverter new_set; 46 sigset64_t* new_set_ptr = nullptr; 47 if (bionic_new_set != nullptr) { 48 sigemptyset64(&new_set.sigset64); 49 new_set.sigset = *bionic_new_set; 50 new_set_ptr = &new_set.sigset64; 51 } 52 53 SigSetConverter old_set; 54 if (sigprocmask64(how, new_set_ptr, &old_set.sigset64) == -1) { 55 return -1; 56 } 57 58 if (bionic_old_set != nullptr) { 59 *bionic_old_set = old_set.sigset; 60 } 61 62 return 0; 63 } 64 65 int sigprocmask64(int how, 66 const sigset64_t* new_set, 67 sigset64_t* old_set) __attribute__((__noinline__)) { 68 sigset64_t mutable_new_set; 69 sigset64_t* mutable_new_set_ptr = nullptr; 70 if (new_set) { 71 mutable_new_set = filter_reserved_signals(*new_set); 72 mutable_new_set_ptr = &mutable_new_set; 73 } 74 return __rt_sigprocmask(how, mutable_new_set_ptr, old_set, sizeof(*new_set)); 75 } 76
