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 #ifndef _SIGNAL_H_ 30 #define _SIGNAL_H_ 31 32 #include <sys/cdefs.h> 33 #include <sys/types.h> 34 35 #include <asm/sigcontext.h> 36 #include <bits/pthread_types.h> 37 #include <bits/signal_types.h> 38 #include <bits/timespec.h> 39 #include <limits.h> 40 41 #include <sys/ucontext.h> 42 #define __BIONIC_HAVE_UCONTEXT_T 43 44 __BEGIN_DECLS 45 46 /* The kernel headers define SIG_DFL (0) and SIG_IGN (1) but not SIG_HOLD, since 47 * SIG_HOLD is only used by the deprecated SysV signal API. 48 */ 49 #define SIG_HOLD __BIONIC_CAST(reinterpret_cast, sighandler_t, 2) 50 51 /* We take a few real-time signals for ourselves. May as well use the same names as glibc. */ 52 #define SIGRTMIN (__libc_current_sigrtmin()) 53 #define SIGRTMAX (__libc_current_sigrtmax()) 54 int __libc_current_sigrtmin(void); 55 int __libc_current_sigrtmax(void); 56 57 extern const char* _Nonnull const sys_siglist[_NSIG]; 58 extern const char* _Nonnull const sys_signame[_NSIG]; /* BSD compatibility. */ 59 60 #define si_timerid si_tid /* glibc compatibility. */ 61 62 int sigaction(int __signal, const struct sigaction* _Nullable __new_action, struct sigaction* _Nullable __old_action); 63 int sigaction64(int __signal, const struct sigaction64* _Nullable __new_action, struct sigaction64* _Nullable __old_action) __INTRODUCED_IN(28); 64 65 int siginterrupt(int __signal, int __flag); 66 67 sighandler_t _Nonnull signal(int __signal, sighandler_t _Nullable __handler); 68 int sigaddset(sigset_t* _Nonnull __set, int __signal); 69 int sigaddset64(sigset64_t* _Nonnull __set, int __signal) __INTRODUCED_IN(28); 70 int sigdelset(sigset_t* _Nonnull __set, int __signal); 71 int sigdelset64(sigset64_t* _Nonnull __set, int __signal) __INTRODUCED_IN(28); 72 int sigemptyset(sigset_t* _Nonnull __set); 73 int sigemptyset64(sigset64_t* _Nonnull __set) __INTRODUCED_IN(28); 74 int sigfillset(sigset_t* _Nonnull __set); 75 int sigfillset64(sigset64_t* _Nonnull __set) __INTRODUCED_IN(28); 76 int sigismember(const sigset_t* _Nonnull __set, int __signal); 77 int sigismember64(const sigset64_t* _Nonnull __set, int __signal) __INTRODUCED_IN(28); 78 79 int sigpending(sigset_t* _Nonnull __set); 80 int sigpending64(sigset64_t* _Nonnull __set) __INTRODUCED_IN(28); 81 int sigprocmask(int __how, const sigset_t* _Nullable __new_set, sigset_t* _Nullable __old_set); 82 int sigprocmask64(int __how, const sigset64_t* _Nullable __new_set, sigset64_t* _Nullable __old_set) __INTRODUCED_IN(28); 83 int sigsuspend(const sigset_t* _Nonnull __mask); 84 int sigsuspend64(const sigset64_t* _Nonnull __mask) __INTRODUCED_IN(28); 85 int sigwait(const sigset_t* _Nonnull __set, int* _Nonnull __signal); 86 int sigwait64(const sigset64_t* _Nonnull __set, int* _Nonnull __signal) __INTRODUCED_IN(28); 87 88 int sighold(int __signal) 89 __attribute__((__deprecated__("use sigprocmask() or pthread_sigmask() instead"))) 90 __INTRODUCED_IN(26); 91 int sigignore(int __signal) 92 __attribute__((__deprecated__("use sigaction() instead"))) __INTRODUCED_IN(26); 93 int sigpause(int __signal) 94 __attribute__((__deprecated__("use sigsuspend() instead"))) __INTRODUCED_IN(26); 95 int sigrelse(int __signal) 96 __attribute__((__deprecated__("use sigprocmask() or pthread_sigmask() instead"))) 97 __INTRODUCED_IN(26); 98 sighandler_t _Nonnull sigset(int __signal, sighandler_t _Nullable __handler) 99 __attribute__((__deprecated__("use sigaction() instead"))) __INTRODUCED_IN(26); 100 101 int raise(int __signal); 102 int kill(pid_t __pid, int __signal); 103 int killpg(int __pgrp, int __signal); 104 int tgkill(int __tgid, int __tid, int __signal); 105 106 int sigaltstack(const stack_t* _Nullable __new_signal_stack, stack_t* _Nullable __old_signal_stack); 107 108 void psiginfo(const siginfo_t* _Nonnull __info, const char* _Nullable __msg); 109 void psignal(int __signal, const char* _Nullable __msg); 110 111 int pthread_kill(pthread_t __pthread, int __signal); 112 #if defined(__USE_GNU) 113 int pthread_sigqueue(pthread_t __pthread, int __signal, const union sigval __value) __INTRODUCED_IN(29); 114 #endif 115 116 int pthread_sigmask(int __how, const sigset_t* _Nullable __new_set, sigset_t* _Nullable __old_set); 117 int pthread_sigmask64(int __how, const sigset64_t* _Nullable __new_set, sigset64_t* _Nullable __old_set) __INTRODUCED_IN(28); 118 119 int sigqueue(pid_t __pid, int __signal, const union sigval __value) __INTRODUCED_IN(23); 120 int sigtimedwait(const sigset_t* _Nonnull __set, siginfo_t* _Nullable __info, const struct timespec* _Nullable __timeout) __INTRODUCED_IN(23); 121 int sigtimedwait64(const sigset64_t* _Nonnull __set, siginfo_t* _Nullable __info, const struct timespec* _Nullable __timeout) __INTRODUCED_IN(28); 122 int sigwaitinfo(const sigset_t* _Nonnull __set, siginfo_t* _Nullable __info) __INTRODUCED_IN(23); 123 int sigwaitinfo64(const sigset64_t* _Nonnull __set, siginfo_t* _Nullable __info) __INTRODUCED_IN(28); 124 125 __END_DECLS 126 127 #endif 128