| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| #ifndef _BITS_SIGNAL_TYPES_H_ |
| #define _BITS_SIGNAL_TYPES_H_ |
| |
| #include <limits.h> |
| #include <sys/cdefs.h> |
| #include <sys/types.h> |
| |
| /* For 64-bit (and mips), the kernel's struct sigaction doesn't match the |
| * POSIX one, so we need to expose our own and translate behind the scenes. |
| * For 32-bit, we're stuck with the definitions we already shipped, |
| * even though they contain a sigset_t that's too small. See sigaction64. |
| */ |
| #define sigaction __kernel_sigaction |
| #include <linux/signal.h> |
| #undef sigaction |
| |
| /* The arm and x86 kernel header files don't define _NSIG. */ |
| #ifndef _KERNEL__NSIG |
| #define _KERNEL__NSIG 64 |
| #endif |
| |
| /* Userspace's NSIG is the kernel's _NSIG + 1. */ |
| #define _NSIG (_KERNEL__NSIG + 1) |
| #define NSIG _NSIG |
| |
| typedef int sig_atomic_t; |
| |
| typedef __sighandler_t sig_t; /* BSD compatibility. */ |
| typedef __sighandler_t sighandler_t; /* glibc compatibility. */ |
| |
| /* sigset_t is already large enough on LP64 and mips, but other LP32's sigset_t |
| * is just `unsigned long`. |
| */ |
| #if defined(__LP64__) || defined(__mips__) |
| typedef sigset_t sigset64_t; |
| #else |
| typedef struct { unsigned long __bits[_KERNEL__NSIG/LONG_BIT]; } sigset64_t; |
| #endif |
| |
| #if defined(__LP64__) |
| |
| #define __SIGACTION_BODY \ |
| int sa_flags; \ |
| union { \ |
| sighandler_t sa_handler; \ |
| void (*sa_sigaction)(int, struct siginfo*, void*); \ |
| }; \ |
| sigset_t sa_mask; \ |
| void (*sa_restorer)(void); \ |
| |
| struct sigaction { __SIGACTION_BODY }; |
| struct sigaction64 { __SIGACTION_BODY }; |
| |
| #undef __SIGACTION_BODY |
| |
| #elif defined(__mips__) |
| |
| #define __SIGACTION_BODY \ |
| int sa_flags; \ |
| union { \ |
| sighandler_t sa_handler; \ |
| void (*sa_sigaction)(int, struct siginfo*, void*); \ |
| }; \ |
| sigset_t sa_mask; \ |
| |
| struct sigaction { __SIGACTION_BODY }; |
| struct sigaction64 { __SIGACTION_BODY }; |
| |
| #undef __SIGACTION_BODY |
| |
| #else |
| |
| #undef sa_handler |
| #undef sa_sigaction |
| |
| struct sigaction { |
| union { |
| sighandler_t sa_handler; |
| void (*sa_sigaction)(int, struct siginfo*, void*); |
| }; |
| sigset_t sa_mask; |
| int sa_flags; |
| void (*sa_restorer)(void); |
| }; |
| |
| /* This matches the kernel's internal structure. */ |
| struct sigaction64 { |
| union { |
| sighandler_t sa_handler; |
| void (*sa_sigaction)(int, struct siginfo*, void*); |
| }; |
| int sa_flags; |
| void (*sa_restorer)(void); |
| sigset64_t sa_mask; |
| }; |
| |
| #endif |
| |
| #endif |