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 <errno.h> 30 #include <pthread.h> 31 #include <signal.h> 32 33 #include "private/ErrnoRestorer.h" 34 #include "private/kernel_sigset_t.h" 35 36 extern "C" int __rt_sigprocmask(int, const kernel_sigset_t*, kernel_sigset_t*, size_t); 37 38 int pthread_sigmask(int how, const sigset_t* iset, sigset_t* oset) { 39 ErrnoRestorer errno_restorer; 40 41 // 'in_set_ptr' is the second parameter to __rt_sigprocmask. It must be NULL 42 // if 'set' is NULL to ensure correct semantics (which in this case would 43 // be to ignore 'how' and return the current signal set into 'oset'). 44 kernel_sigset_t in_set; 45 kernel_sigset_t* in_set_ptr = NULL; 46 if (iset != NULL) { 47 in_set.set(iset); 48 in_set_ptr = &in_set; 49 } 50 51 kernel_sigset_t out_set; 52 if (__rt_sigprocmask(how, in_set_ptr, &out_set, sizeof(out_set)) == -1) { 53 return errno; 54 } 55 56 if (oset != NULL) { 57 *oset = out_set.bionic; 58 } 59 60 return 0; 61 } 62
