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 // Our sigset_t is wrong for ARM and x86. It's 32-bit but the kernel expects 64 bits. 21 // This means we can't support real-time signals correctly until we can change the ABI. 22 // In the meantime, we can use this union to pass an appropriately-sized block of memory 23 // to the kernel, at the cost of not being able to refer to real-time signals. 24 union kernel_sigset_t { 25 kernel_sigset_t() { 26 clear(); 27 } 28 29 kernel_sigset_t(const sigset_t* value) { 30 clear(); 31 set(value); 32 } 33 34 void clear() { 35 memset(this, 0, sizeof(*this)); 36 } 37 38 void set(const sigset_t* value) { 39 bionic = *value; 40 } 41 42 sigset_t* get() { 43 return &bionic; 44 } 45 46 sigset_t bionic; 47 #ifndef __mips__ 48 uint32_t kernel[2]; 49 #endif 50 }; 51 52 #endif 53
