1 /* 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef LIBC_PRIVATE_KERNEL_SIGSET_T_H_ 18 #define LIBC_PRIVATE_KERNEL_SIGSET_T_H_ 19 20 #include <signal.h> 21 22 // Our sigset_t is wrong for ARM and x86. It's 32-bit but the kernel expects 64 bits. 23 // This means we can't support real-time signals correctly until we can change the ABI. 24 // In the meantime, we can use this union to pass an appropriately-sized block of memory 25 // to the kernel, at the cost of not being able to refer to real-time signals. 26 union kernel_sigset_t { 27 kernel_sigset_t() { 28 clear(); 29 } 30 31 kernel_sigset_t(const sigset_t* value) { 32 clear(); 33 set(value); 34 } 35 36 void clear() { 37 __builtin_memset(this, 0, sizeof(*this)); 38 } 39 40 void set(const sigset_t* value) { 41 bionic = *value; 42 } 43 44 sigset_t* get() { 45 return &bionic; 46 } 47 48 sigset_t bionic; 49 #ifndef __mips__ 50 uint32_t kernel[2]; 51 #endif 52 }; 53 54 #endif 55
