signal.h revision 40d105ccb3e6283566ce54b693b3088f31aa4f26
11dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project/* 21dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * Copyright (C) 2008 The Android Open Source Project 31dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * All rights reserved. 41dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 51dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * Redistribution and use in source and binary forms, with or without 61dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * modification, are permitted provided that the following conditions 71dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * are met: 81dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * * Redistributions of source code must retain the above copyright 91dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * notice, this list of conditions and the following disclaimer. 101dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * * Redistributions in binary form must reproduce the above copyright 111dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * notice, this list of conditions and the following disclaimer in 121dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * the documentation and/or other materials provided with the 131dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * distribution. 141dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 151dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 161dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 171dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 181dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 191dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 201dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 211dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 221dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 231dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 241dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 251dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 261dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * SUCH DAMAGE. 271dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project */ 281dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#ifndef _SIGNAL_H_ 291dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#define _SIGNAL_H_ 301dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 31da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughes#include <errno.h> 321dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <sys/cdefs.h> 33c1b44ecc5385e68e81667068e03b32c2084a85b1David 'Digit' Turner#include <limits.h> /* For LONG_BIT */ 34c1b44ecc5385e68e81667068e03b32c2084a85b1David 'Digit' Turner#include <string.h> /* For memset() */ 351dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <sys/types.h> 36c1b44ecc5385e68e81667068e03b32c2084a85b1David 'Digit' Turner#include <asm/signal.h> 371dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 38c1b44ecc5385e68e81667068e03b32c2084a85b1David 'Digit' Turner#define __ARCH_SI_UID_T __kernel_uid32_t 39c1b44ecc5385e68e81667068e03b32c2084a85b1David 'Digit' Turner#include <asm/siginfo.h> 40c1b44ecc5385e68e81667068e03b32c2084a85b1David 'Digit' Turner#undef __ARCH_SI_UID_T 411dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 421dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project__BEGIN_DECLS 431dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 44c1b44ecc5385e68e81667068e03b32c2084a85b1David 'Digit' Turnertypedef int sig_atomic_t; 451dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 46c1b44ecc5385e68e81667068e03b32c2084a85b1David 'Digit' Turner/* _NSIG is used by the SIGRTMAX definition under <asm/signal.h>, however 47c1b44ecc5385e68e81667068e03b32c2084a85b1David 'Digit' Turner * its definition is part of a #if __KERNEL__ .. #endif block in the original 48c1b44ecc5385e68e81667068e03b32c2084a85b1David 'Digit' Turner * kernel headers and is thus not part of our cleaned-up versions. 495c8c00a95a6cdcd74ac32dadedf0cea2b1661169David 'Digit' Turner * 50c1b44ecc5385e68e81667068e03b32c2084a85b1David 'Digit' Turner * Looking at the current kernel sources, it is defined as 64 for all 51c1b44ecc5385e68e81667068e03b32c2084a85b1David 'Digit' Turner * architectures except for the 'mips' one which set it to 128. 525c8c00a95a6cdcd74ac32dadedf0cea2b1661169David 'Digit' Turner */ 53c1b44ecc5385e68e81667068e03b32c2084a85b1David 'Digit' Turner#ifndef _NSIG 54c1b44ecc5385e68e81667068e03b32c2084a85b1David 'Digit' Turner# define _NSIG 64 55c1b44ecc5385e68e81667068e03b32c2084a85b1David 'Digit' Turner#endif 561dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 57da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughesextern const char* const sys_siglist[]; 58da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughesextern const char* const sys_signame[]; 59da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughes 60f373b11f9ff46a2f4b918b0027d466eaa035297aKito Chengstatic __inline__ int sigismember(const sigset_t* set, int signum) { 61fb5e5cbdd4e1d75594c37ebb544c0f46482a027bElliott Hughes int bit = signum - 1; // Signal numbers start at 1, but bit positions start at 0. 62156ccf42ff622bc7284640bd6679bf35cfa9a123Erik Gilling const unsigned long* local_set = (const unsigned long*) set; 6341b3179c9ef03ebb447cac7f5e8405dce399cb17Elliott Hughes if (set == NULL || bit < 0 || bit >= (int) (8*sizeof(sigset_t))) { 64da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughes errno = EINVAL; 65da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughes return -1; 66da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughes } 67fb5e5cbdd4e1d75594c37ebb544c0f46482a027bElliott Hughes return (int) ((local_set[bit / LONG_BIT] >> (bit % LONG_BIT)) & 1); 681dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 691dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 70da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughesstatic __inline__ int sigaddset(sigset_t* set, int signum) { 71fb5e5cbdd4e1d75594c37ebb544c0f46482a027bElliott Hughes int bit = signum - 1; // Signal numbers start at 1, but bit positions start at 0. 72156ccf42ff622bc7284640bd6679bf35cfa9a123Erik Gilling unsigned long* local_set = (unsigned long*) set; 7341b3179c9ef03ebb447cac7f5e8405dce399cb17Elliott Hughes if (set == NULL || bit < 0 || bit >= (int) (8*sizeof(sigset_t))) { 74da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughes errno = EINVAL; 75da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughes return -1; 76da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughes } 77fb5e5cbdd4e1d75594c37ebb544c0f46482a027bElliott Hughes local_set[bit / LONG_BIT] |= 1UL << (bit % LONG_BIT); 78da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughes return 0; 791dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 801dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 81da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughesstatic __inline__ int sigdelset(sigset_t* set, int signum) { 82fb5e5cbdd4e1d75594c37ebb544c0f46482a027bElliott Hughes int bit = signum - 1; // Signal numbers start at 1, but bit positions start at 0. 83156ccf42ff622bc7284640bd6679bf35cfa9a123Erik Gilling unsigned long* local_set = (unsigned long*) set; 8441b3179c9ef03ebb447cac7f5e8405dce399cb17Elliott Hughes if (set == NULL || bit < 0 || bit >= (int) (8*sizeof(sigset_t))) { 85da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughes errno = EINVAL; 86da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughes return -1; 87da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughes } 88fb5e5cbdd4e1d75594c37ebb544c0f46482a027bElliott Hughes local_set[bit / LONG_BIT] &= ~(1UL << (bit % LONG_BIT)); 89da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughes return 0; 901dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 911dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 92da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughesstatic __inline__ int sigemptyset(sigset_t* set) { 93da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughes if (set == NULL) { 94da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughes errno = EINVAL; 95da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughes return -1; 96da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughes } 97da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughes memset(set, 0, sizeof *set); 98da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughes return 0; 991dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 1001dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 101da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughesstatic __inline__ int sigfillset(sigset_t* set) { 102da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughes if (set == NULL) { 103da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughes errno = EINVAL; 104da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughes return -1; 105da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughes } 106da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughes memset(set, ~0, sizeof *set); 107da73f655fcbac6e1a8bfd35303cef6f41187d12bElliott Hughes return 0; 1081dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 1091dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 1101dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 1111dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project/* compatibility types */ 1121dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projecttypedef void (*sig_t)(int); 1131dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projecttypedef sig_t sighandler_t; 1141dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 1151dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project/* differentiater between sysv and bsd behaviour 8*/ 1161dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectextern __sighandler_t sysv_signal(int, __sighandler_t); 1171dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectextern __sighandler_t bsd_signal(int, __sighandler_t); 1181dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 1191dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project/* the default is bsd */ 1201dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectstatic __inline__ __sighandler_t signal(int s, __sighandler_t f) 1211dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project{ 1221dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return bsd_signal(s,f); 1231dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 1241dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 12540d105ccb3e6283566ce54b693b3088f31aa4f26Elliott Hughesextern int sigaction(int, const struct sigaction*, struct sigaction*); 12640d105ccb3e6283566ce54b693b3088f31aa4f26Elliott Hughesextern int siginterrupt(int, int); 12740d105ccb3e6283566ce54b693b3088f31aa4f26Elliott Hughesextern int sigpending(sigset_t*) __nonnull((1)); 12840d105ccb3e6283566ce54b693b3088f31aa4f26Elliott Hughesextern int sigprocmask(int, const sigset_t*, sigset_t*); 12940d105ccb3e6283566ce54b693b3088f31aa4f26Elliott Hughesextern int sigsuspend(const sigset_t*) __nonnull((1)); 13040d105ccb3e6283566ce54b693b3088f31aa4f26Elliott Hughesextern int sigwait(const sigset_t*, int*) __nonnull((1, 2)); 1311dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 1321dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectextern int raise(int); 1331dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectextern int kill(pid_t, int); 13440d105ccb3e6283566ce54b693b3088f31aa4f26Elliott Hughesextern int killpg(int, int); 13540d105ccb3e6283566ce54b693b3088f31aa4f26Elliott Hughesextern int sigaltstack(const stack_t*, stack_t*); 1361dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 13740d105ccb3e6283566ce54b693b3088f31aa4f26Elliott Hughesextern void psiginfo(const siginfo_t*, const char*); 13840d105ccb3e6283566ce54b693b3088f31aa4f26Elliott Hughesextern void psignal(int, const char*); 1391dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 1401dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project__END_DECLS 1411dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 1421dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#endif /* _SIGNAL_H_ */ 143