/*
* Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
/*
* Copyright (c) 1982, 1986, 1989, 1991, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
* @(#)signal.h 8.2 (Berkeley) 1/21/94
*/
#ifndef _SYS_SIGNAL_H_
#define _SYS_SIGNAL_H_
#include <sys/cdefs.h>
#include <sys/appleapiopts.h>
#include <Availability.h>
#define __DARWIN_NSIG 32 /* counting 0; could be 33 (mask is 1-32) */
#if !defined(_ANSI_SOURCE) && (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE))
#define NSIG __DARWIN_NSIG
#endif
#include <machine/signal.h> /* sigcontext; codes for SIGILL, SIGFPE */
#define SIGHUP 1 /* hangup */
#define SIGINT 2 /* interrupt */
#define SIGQUIT 3 /* quit */
#define SIGILL 4 /* illegal instruction (not reset when caught) */
#define SIGTRAP 5 /* trace trap (not reset when caught) */
#define SIGABRT 6 /* abort() */
#if (defined(_POSIX_C_SOURCE) && !defined(_DARWIN_C_SOURCE))
#define SIGPOLL 7 /* pollable event ([XSR] generated, not supported) */
#else /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
#define SIGIOT SIGABRT /* compatibility */
#define SIGEMT 7 /* EMT instruction */
#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
#define SIGFPE 8 /* floating point exception */
#define SIGKILL 9 /* kill (cannot be caught or ignored) */
#define SIGBUS 10 /* bus error */
#define SIGSEGV 11 /* segmentation violation */
#define SIGSYS 12 /* bad argument to system call */
#define SIGPIPE 13 /* write on a pipe with no one to read it */
#define SIGALRM 14 /* alarm clock */
#define SIGTERM 15 /* software termination signal from kill */
#define SIGURG 16 /* urgent condition on IO channel */
#define SIGSTOP 17 /* sendable stop signal not from tty */
#define SIGTSTP 18 /* stop signal from tty */
#define SIGCONT 19 /* continue a stopped process */
#define SIGCHLD 20 /* to parent on child stop or exit */
#define SIGTTIN 21 /* to readers pgrp upon background tty read */
#define SIGTTOU 22 /* like TTIN for output if (tp->t_local<OSTOP) */
#if (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE))
#define SIGIO 23 /* input/output possible signal */
#endif
#define SIGXCPU 24 /* exceeded CPU time limit */
#define SIGXFSZ 25 /* exceeded file size limit */
#define SIGVTALRM 26 /* virtual time alarm */
#define SIGPROF 27 /* profiling time alarm */
#if (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE))
#define SIGWINCH 28 /* window size changes */
#define SIGINFO 29 /* information request */
#endif
#define SIGUSR1 30 /* user defined signal 1 */
#define SIGUSR2 31 /* user defined signal 2 */
#if defined(_ANSI_SOURCE) || __DARWIN_UNIX03 || defined(__cplusplus)
/*
* Language spec sez we must list exactly one parameter, even though we
* actually supply three. Ugh!
* SIG_HOLD is chosen to avoid KERN_SIG_* values in <sys/signalvar.h>
*/
#define SIG_DFL (void (*)(int))0
#define SIG_IGN (void (*)(int))1
#define SIG_HOLD (void (*)(int))5
#define SIG_ERR ((void (*)(int))-1)
#else
/* DO NOT REMOVE THE COMMENTED OUT int: fixincludes needs to see them */
#define SIG_DFL (void (*)( /*int*/ ))0
#define SIG_IGN (void (*)( /*int*/ ))1
#define SIG_HOLD (void (*)( /*int*/ ))5
#define SIG_ERR ((void (*)( /*int*/ ))-1)
#endif
#ifndef _ANSI_SOURCE
#include <sys/_types.h>
#include <machine/_mcontext.h>
#include <sys/_pthread/_pthread_attr_t.h>
#include <sys/_types/_sigaltstack.h>
#include <sys/_types/_ucontext.h>
#include <sys/_types/_pid_t.h>
#include <sys/_types/_sigset_t.h>
#include <sys/_types/_size_t.h>
#include <sys/_types/_uid_t.h>
union sigval {
/* Members as suggested by Annex C of POSIX 1003.1b. */
int sival_int;
void *sival_ptr;
};
#define SIGEV_NONE 0 /* No async notification */
#define SIGEV_SIGNAL 1 /* aio - completion notification */
#define SIGEV_THREAD 3 /* [NOTIMP] [RTS] call notification function */
struct sigevent {
int sigev_notify; /* Notification type */
int sigev_signo; /* Signal number */
union sigval sigev_value; /* Signal value */
void (*sigev_notify_function)(union sigval); /* Notification function */
pthread_attr_t *sigev_notify_attributes; /* Notification attributes */
};
typedef struct __siginfo {
int si_signo; /* signal number */
int si_errno; /* errno association */
int si_code; /* signal code */
pid_t si_pid; /* sending process */
uid_t si_uid; /* sender's ruid */
int si_status; /* exit value */
void *si_addr; /* faulting instruction */
union sigval si_value; /* signal value */
long si_band; /* band event for SIGPOLL */
unsigned long __pad[7]; /* Reserved for Future Use */
} siginfo_t;
/*
* When the signal is SIGILL or SIGFPE, si_addr contains the address of
* the faulting instruction.
* When the signal is SIGSEGV or SIGBUS, si_addr contains the address of
* the faulting memory reference. Although for x86 there are cases of SIGSEGV
* for which si_addr cannot be determined and is NULL.
* If the signal is SIGCHLD, the si_pid field will contain the child process ID,
* si_status contains the exit value or signal and
* si_uid contains the real user ID of the process that sent the signal.
*/
/* Values for si_code */
/* Codes for SIGILL */
#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
#define ILL_NOOP 0 /* if only I knew... */
#endif
#define ILL_ILLOPC 1 /* [XSI] illegal opcode */
#define ILL_ILLTRP 2 /* [XSI] illegal trap */
#define ILL_PRVOPC 3 /* [XSI] privileged opcode */
#define ILL_ILLOPN 4 /* [XSI] illegal operand -NOTIMP */
#define ILL_ILLADR 5 /* [XSI] illegal addressing mode -NOTIMP */
#define ILL_PRVREG 6 /* [XSI] privileged register -NOTIMP */
#define ILL_COPROC 7 /* [XSI] coprocessor error -NOTIMP */
#define ILL_BADSTK 8 /* [XSI] internal stack error -NOTIMP */
/* Codes for SIGFPE */
#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
#define FPE_NOOP 0 /* if only I knew... */
#endif
#define FPE_FLTDIV 1 /* [XSI] floating point divide by zero */
#define FPE_FLTOVF 2 /* [XSI] floating point overflow */
#define FPE_FLTUND 3 /* [XSI] floating point underflow */
#define FPE_FLTRES 4 /* [XSI] floating point inexact result */
#define FPE_FLTINV 5 /* [XSI] invalid floating point operation */
#define FPE_FLTSUB 6 /* [XSI] subscript out of range -NOTIMP */
#define FPE_INTDIV 7 /* [XSI] integer divide by zero */
#define FPE_INTOVF 8 /* [XSI] integer overflow */
/* Codes for SIGSEGV */
#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
#define SEGV_NOOP 0 /* if only I knew... */
#endif
#define SEGV_MAPERR 1 /* [XSI] address not mapped to object */
#define SEGV_ACCERR 2 /* [XSI] invalid permission for mapped object */
/* Codes for SIGBUS */
#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
#define BUS_NOOP 0 /* if only I knew... */
#endif
#define BUS_ADRALN 1 /* [XSI] Invalid address alignment */
#define BUS_ADRERR 2 /* [XSI] Nonexistent physical address -NOTIMP */
#define BUS_OBJERR 3 /* [XSI] Object-specific HW error - NOTIMP */
/* Codes for SIGTRAP */
#define TRAP_BRKPT 1 /* [XSI] Process breakpoint -NOTIMP */
#define TRAP_TRACE 2 /* [XSI] Process trace trap -NOTIMP */
/* Codes for SIGCHLD */
#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
#define CLD_NOOP 0 /* if only I knew... */
#endif
#define CLD_EXITED 1 /* [XSI] child has exited */
#define CLD_KILLED 2 /* [XSI] terminated abnormally, no core file */
#define CLD_DUMPED 3 /* [XSI] terminated abnormally, core file */
#define CLD_TRAPPED 4 /* [XSI] traced child has trapped */
#define CLD_STOPPED 5 /* [XSI] child has stopped */
#define CLD_CONTINUED 6 /* [XSI] stopped child has continued */
/* Codes for SIGPOLL */
#define POLL_IN 1 /* [XSR] Data input available */
#define POLL_OUT 2 /* [XSR] Output buffers available */
#define POLL_MSG 3 /* [XSR] Input message available */
#define POLL_ERR 4 /* [XSR] I/O error */
#define POLL_PRI 5 /* [XSR] High priority input available */
#define POLL_HUP 6 /* [XSR] Device disconnected */
/* union for signal handlers */
union __sigaction_u {
void (*__sa_handler)(int);
void (*__sa_sigaction)(int, struct __siginfo *,
void *);
};
/* Signal vector template for Kernel user boundary */
struct __sigaction {
union __sigaction_u __sigaction_u; /* signal handler */
void (*sa_tramp)(void *, int, int, siginfo_t *, void *);
sigset_t sa_mask; /* signal mask to apply */
int sa_flags; /* see signal options below */
};
/*
* Signal vector "template" used in sigaction call.
*/
struct sigaction {
union __sigaction_u __sigaction_u; /* signal handler */
sigset_t sa_mask; /* signal mask to apply */
int sa_flags; /* see signal options below */
};
/* if SA_SIGINFO is set, sa_sigaction is to be used instead of sa_handler. */
#define sa_handler __sigaction_u.__sa_handler
#define sa_sigaction __sigaction_u.__sa_sigaction
#define SA_ONSTACK 0x0001 /* take signal on signal stack */
#define SA_RESTART 0x0002 /* restart system on signal return */
#define SA_RESETHAND 0x0004 /* reset to SIG_DFL when taking signal */
#define SA_NOCLDSTOP 0x0008 /* do not generate SIGCHLD on child stop */
#define SA_NODEFER 0x0010 /* don't mask the signal we're delivering */
#define SA_NOCLDWAIT 0x0020 /* don't keep zombies around */
#define SA_SIGINFO 0x0040 /* signal handler with SA_SIGINFO args */
#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
#define SA_USERTRAMP 0x0100 /* do not bounce off kernel's sigtramp */
/* This will provide 64bit register set in a 32bit user address space */
#define SA_64REGSET 0x0200 /* signal handler with SA_SIGINFO args with 64bit regs information */
#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
/* the following are the only bits we support from user space, the
* rest are for kernel use only.
*/
#define SA_USERSPACE_MASK (SA_ONSTACK | SA_RESTART | SA_RESETHAND | SA_NOCLDSTOP | SA_NODEFER | SA_NOCLDWAIT | SA_SIGINFO)
/*
* Flags for sigprocmask:
*/
#define SIG_BLOCK 1 /* block specified signal set */
#define SIG_UNBLOCK 2 /* unblock specified signal set */
#define SIG_SETMASK 3 /* set specified signal set */
/* POSIX 1003.1b required values. */
#define SI_USER 0x10001 /* [CX] signal from kill() */
#define SI_QUEUE 0x10002 /* [CX] signal from sigqueue() */
#define SI_TIMER 0x10003 /* [CX] timer expiration */
#define SI_ASYNCIO 0x10004 /* [CX] aio request completion */
#define SI_MESGQ 0x10005 /* [CX] from message arrival on empty queue */
#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
typedef void (*sig_t)(int); /* type of signal function */
#endif
/*
* Structure used in sigaltstack call.
*/
#define SS_ONSTACK 0x0001 /* take signal on signal stack */
#define SS_DISABLE 0x0004 /* disable taking signals on alternate stack */
#define MINSIGSTKSZ 32768 /* (32K)minimum allowable stack */
#define SIGSTKSZ 131072 /* (128K)recommended stack size */
#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
/*
* 4.3 compatibility:
* Signal vector "template" used in sigvec call.
*/
struct sigvec {
void (*sv_handler)(int); /* signal handler */
int sv_mask; /* signal mask to apply */
int sv_flags; /* see signal options below */
};
#define SV_ONSTACK SA_ONSTACK
#define SV_INTERRUPT SA_RESTART /* same bit, opposite sense */
#define SV_RESETHAND SA_RESETHAND
#define SV_NODEFER SA_NODEFER
#define SV_NOCLDSTOP SA_NOCLDSTOP
#define SV_SIGINFO SA_SIGINFO
#define sv_onstack sv_flags /* isn't compatibility wonderful! */
#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
/*
* Structure used in sigstack call.
*/
struct sigstack {
char *ss_sp; /* signal stack pointer */
int ss_onstack; /* current status */
};
#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
/*
* Macro for converting signal number to a mask suitable for
* sigblock().
*/
#define sigmask(m) (1 << ((m)-1))
#define BADSIG SIG_ERR
#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
#endif /* !_ANSI_SOURCE */
/*
* For historical reasons; programs expect signal's return value to be
* defined by <sys/signal.h>.
*/
__BEGIN_DECLS
void(*signal(int, void (*)(int)))(int);
__END_DECLS
#endif /* !_SYS_SIGNAL_H_ */
