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 #ifndef _SIGNAL_H_ 29 #define _SIGNAL_H_ 30 31 #include <sys/cdefs.h> 32 #include <limits.h> /* For LONG_BIT */ 33 #include <string.h> /* For memset() */ 34 #include <sys/types.h> 35 #include <asm/signal.h> 36 #include <asm/sigcontext.h> 37 38 #define __ARCH_SI_UID_T __kernel_uid32_t 39 #include <asm/siginfo.h> 40 #undef __ARCH_SI_UID_T 41 42 #include <sys/ucontext.h> 43 #define __BIONIC_HAVE_UCONTEXT_T 44 45 __BEGIN_DECLS 46 47 typedef int sig_atomic_t; 48 49 /* _NSIG is used by the SIGRTMAX definition under <asm/signal.h>, however 50 * its definition is part of a #if __KERNEL__ .. #endif block in the original 51 * kernel headers and is thus not part of our cleaned-up versions. 52 * 53 * Looking at the current kernel sources, it is defined as 64 for all 54 * architectures except for the 'mips' one which set it to 128. 55 */ 56 #ifndef _NSIG 57 # define _NSIG 64 58 #endif 59 60 extern const char * const sys_siglist[]; 61 extern const char * const sys_signame[]; 62 63 static __inline__ int sigismember(sigset_t *set, int signum) 64 { 65 unsigned long *local_set = (unsigned long *)set; 66 signum--; 67 return (int)((local_set[signum/LONG_BIT] >> (signum%LONG_BIT)) & 1); 68 } 69 70 71 static __inline__ int sigaddset(sigset_t *set, int signum) 72 { 73 unsigned long *local_set = (unsigned long *)set; 74 signum--; 75 local_set[signum/LONG_BIT] |= 1UL << (signum%LONG_BIT); 76 return 0; 77 } 78 79 80 static __inline__ int sigdelset(sigset_t *set, int signum) 81 { 82 unsigned long *local_set = (unsigned long *)set; 83 signum--; 84 local_set[signum/LONG_BIT] &= ~(1UL << (signum%LONG_BIT)); 85 return 0; 86 } 87 88 89 static __inline__ int sigemptyset(sigset_t *set) 90 { 91 memset(set, 0, sizeof *set); 92 return 0; 93 } 94 95 static __inline__ int sigfillset(sigset_t *set) 96 { 97 memset(set, ~0, sizeof *set); 98 return 0; 99 } 100 101 102 /* compatibility types */ 103 typedef void (*sig_t)(int); 104 typedef sig_t sighandler_t; 105 106 /* differentiater between sysv and bsd behaviour 8*/ 107 extern __sighandler_t sysv_signal(int, __sighandler_t); 108 extern __sighandler_t bsd_signal(int, __sighandler_t); 109 110 /* the default is bsd */ 111 static __inline__ __sighandler_t signal(int s, __sighandler_t f) 112 { 113 return bsd_signal(s,f); 114 } 115 116 /* the syscall itself */ 117 extern __sighandler_t __signal(int, __sighandler_t, int); 118 119 extern int sigprocmask(int, const sigset_t *, sigset_t *); 120 extern int sigaction(int, const struct sigaction *, struct sigaction *); 121 122 extern int sigpending(sigset_t *); 123 extern int sigsuspend(const sigset_t *); 124 extern int sigwait(const sigset_t *set, int *sig); 125 extern int siginterrupt(int sig, int flag); 126 127 extern int raise(int); 128 extern int kill(pid_t, int); 129 extern int killpg(int pgrp, int sig); 130 extern int sigaltstack(const stack_t *ss, stack_t *oss); 131 132 133 __END_DECLS 134 135 #endif /* _SIGNAL_H_ */ 136
