| /*- |
| * 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. |
| * 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 8.4 (Berkeley) 5/4/95 |
| * $FreeBSD$ |
| */ |
| |
| #ifndef _BSD_SYS_SIGNAL_H_ |
| #define _BSD_SYS_SIGNAL_H_ |
| |
| #include <sys/bsd_cdefs.h> |
| #include <sys/bsd__types.h> |
| #include <sys/bsd__sigset.h> |
| |
| #include <machine/bsd__limits.h> /* __MINSIGSTKSZ */ |
| #include <machine/bsd_signal.h> /* sig_atomic_t; trap codes; sigcontext */ |
| |
| #include <signal.h> |
| #if 0 |
| /* |
| * System defined signals. |
| */ |
| #if __POSIX_VISIBLE || __XSI_VISIBLE |
| #define SIGHUP 1 /* hangup */ |
| #endif |
| #define SIGINT 2 /* interrupt */ |
| #if __POSIX_VISIBLE || __XSI_VISIBLE |
| #define SIGQUIT 3 /* quit */ |
| #endif |
| #define SIGILL 4 /* illegal instr. (not reset when caught) */ |
| #if __XSI_VISIBLE |
| #define SIGTRAP 5 /* trace trap (not reset when caught) */ |
| #endif |
| #define SIGABRT 6 /* abort() */ |
| #if __BSD_VISIBLE |
| #define SIGIOT SIGABRT /* compatibility */ |
| #define SIGEMT 7 /* EMT instruction */ |
| #endif |
| #define SIGFPE 8 /* floating point exception */ |
| #if __POSIX_VISIBLE || __XSI_VISIBLE |
| #define SIGKILL 9 /* kill (cannot be caught or ignored) */ |
| #endif |
| #if __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE |
| #define SIGBUS 10 /* bus error */ |
| #endif |
| #define SIGSEGV 11 /* segmentation violation */ |
| #if __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE |
| #define SIGSYS 12 /* non-existent system call invoked */ |
| #endif |
| #if __POSIX_VISIBLE || __XSI_VISIBLE |
| #define SIGPIPE 13 /* write on a pipe with no one to read it */ |
| #define SIGALRM 14 /* alarm clock */ |
| #endif |
| #define SIGTERM 15 /* software termination signal from kill */ |
| #if __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE |
| #define SIGURG 16 /* urgent condition on IO channel */ |
| #endif |
| #if __POSIX_VISIBLE || __XSI_VISIBLE |
| #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 if (tp->t_local<OSTOP) */ |
| #endif |
| #if __BSD_VISIBLE |
| #define SIGIO 23 /* input/output possible signal */ |
| #endif |
| #if __XSI_VISIBLE |
| #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 */ |
| #endif |
| #if __BSD_VISIBLE |
| #define SIGWINCH 28 /* window size changes */ |
| #define SIGINFO 29 /* information request */ |
| #endif |
| #if __POSIX_VISIBLE || __XSI_VISIBLE |
| #define SIGUSR1 30 /* user defined signal 1 */ |
| #define SIGUSR2 31 /* user defined signal 2 */ |
| #endif |
| #if __BSD_VISIBLE |
| #define SIGTHR 32 /* reserved by thread library. */ |
| #define SIGLWP SIGTHR |
| #endif |
| |
| #define SIGRTMIN 65 |
| #define SIGRTMAX 126 |
| |
| #define SIG_DFL ((__sighandler_t *)0) |
| #define SIG_IGN ((__sighandler_t *)1) |
| #define SIG_ERR ((__sighandler_t *)-1) |
| /* |
| * XXX missing SIG_HOLD. |
| */ |
| |
| /*- |
| * Type of a signal handling function. |
| * |
| * Language spec sez signal handlers take exactly one arg, even though we |
| * actually supply three. Ugh! |
| * |
| * We don't try to hide the difference by leaving out the args because |
| * that would cause warnings about conformant programs. Nonconformant |
| * programs can avoid the warnings by casting to (__sighandler_t *) or |
| * sig_t before calling signal() or assigning to sa_handler or sv_handler. |
| * |
| * The kernel should reverse the cast before calling the function. It |
| * has no way to do this, but on most machines 1-arg and 3-arg functions |
| * have the same calling protocol so there is no problem in practice. |
| * A bit in sa_flags could be used to specify the number of args. |
| */ |
| typedef void __sighandler_t(int); |
| |
| #if __POSIX_VISIBLE || __XSI_VISIBLE |
| #ifndef __sigset_t_defined |
| #define __sigset_t_defined |
| typedef __sigset_t sigset_t; |
| #endif |
| #endif |
| |
| #if __POSIX_VISIBLE >= 199309 || __XSI_VISIBLE >= 500 |
| union sigval { |
| /* Members as suggested by Annex C of POSIX 1003.1b. */ |
| int sival_int; |
| void *sival_ptr; |
| /* 6.0 compatibility */ |
| int sigval_int; |
| void *sigval_ptr; |
| }; |
| #endif |
| |
| #if __POSIX_VISIBLE >= 199309 |
| struct sigevent { |
| int sigev_notify; /* Notification type */ |
| int sigev_signo; /* Signal number */ |
| union sigval sigev_value; /* Signal value */ |
| union { |
| __lwpid_t _threadid; |
| struct { |
| void (*_function)(union sigval); |
| void *_attribute; /* pthread_attr_t * */ |
| } _sigev_thread; |
| long __spare__[8]; |
| } _sigev_un; |
| }; |
| |
| #if __BSD_VISIBLE |
| #define sigev_notify_kqueue sigev_signo |
| #define sigev_notify_thread_id _sigev_un._threadid |
| #endif |
| #define sigev_notify_function _sigev_un._sigev_thread._function |
| #define sigev_notify_attributes _sigev_un._sigev_thread._attribute |
| |
| #define SIGEV_NONE 0 /* No async notification. */ |
| #define SIGEV_SIGNAL 1 /* Generate a queued signal. */ |
| #define SIGEV_THREAD 2 /* Call back from another pthread. */ |
| #if __BSD_VISIBLE |
| #define SIGEV_KEVENT 3 /* Generate a kevent. */ |
| #define SIGEV_THREAD_ID 4 /* Send signal to a kernel thread. */ |
| #endif |
| #endif /* __POSIX_VISIBLE >= 199309 */ |
| |
| #if __POSIX_VISIBLE >= 199309 || __XSI_VISIBLE |
| typedef struct __siginfo { |
| int si_signo; /* signal number */ |
| int si_errno; /* errno association */ |
| /* |
| * Cause of signal, one of the SI_ macros or signal-specific |
| * values, i.e. one of the FPE_... values for SIGFPE. This |
| * value is equivalent to the second argument to an old-style |
| * FreeBSD signal handler. |
| */ |
| 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 */ |
| union { |
| struct { |
| int _trapno;/* machine specific trap code */ |
| } _fault; |
| struct { |
| int _timerid; |
| int _overrun; |
| } _timer; |
| struct { |
| int _mqd; |
| } _mesgq; |
| struct { |
| long _band; /* band event for SIGPOLL */ |
| } _poll; /* was this ever used ? */ |
| struct { |
| long __spare1__; |
| int __spare2__[7]; |
| } __spare__; |
| } _reason; |
| } siginfo_t; |
| |
| #define si_trapno _reason._fault._trapno |
| #define si_timerid _reason._timer._timerid |
| #define si_overrun _reason._timer._overrun |
| #define si_mqd _reason._mesgq._mqd |
| #define si_band _reason._poll._band |
| |
| /** si_code **/ |
| /* codes for SIGILL */ |
| #define ILL_ILLOPC 1 /* Illegal opcode. */ |
| #define ILL_ILLOPN 2 /* Illegal operand. */ |
| #define ILL_ILLADR 3 /* Illegal addressing mode. */ |
| #define ILL_ILLTRP 4 /* Illegal trap. */ |
| #define ILL_PRVOPC 5 /* Privileged opcode. */ |
| #define ILL_PRVREG 6 /* Privileged register. */ |
| #define ILL_COPROC 7 /* Coprocessor error. */ |
| #define ILL_BADSTK 8 /* Internal stack error. */ |
| |
| /* codes for SIGBUS */ |
| #define BUS_ADRALN 1 /* Invalid address alignment. */ |
| #define BUS_ADRERR 2 /* Nonexistent physical address. */ |
| #define BUS_OBJERR 3 /* Object-specific hardware error. */ |
| |
| /* codes for SIGSEGV */ |
| #define SEGV_MAPERR 1 /* Address not mapped to object. */ |
| #define SEGV_ACCERR 2 /* Invalid permissions for mapped */ |
| /* object. */ |
| |
| /* codes for SIGFPE */ |
| #define FPE_INTOVF 1 /* Integer overflow. */ |
| #define FPE_INTDIV 2 /* Integer divide by zero. */ |
| #define FPE_FLTDIV 3 /* Floating point divide by zero. */ |
| #define FPE_FLTOVF 4 /* Floating point overflow. */ |
| #define FPE_FLTUND 5 /* Floating point underflow. */ |
| #define FPE_FLTRES 6 /* Floating point inexact result. */ |
| #define FPE_FLTINV 7 /* Invalid floating point operation. */ |
| #define FPE_FLTSUB 8 /* Subscript out of range. */ |
| |
| /* codes for SIGTRAP */ |
| #define TRAP_BRKPT 1 /* Process breakpoint. */ |
| #define TRAP_TRACE 2 /* Process trace trap. */ |
| |
| /* codes for SIGCHLD */ |
| #define CLD_EXITED 1 /* Child has exited */ |
| #define CLD_KILLED 2 /* Child has terminated abnormally but */ |
| /* did not create a core file */ |
| #define CLD_DUMPED 3 /* Child has terminated abnormally and */ |
| /* created a core file */ |
| #define CLD_TRAPPED 4 /* Traced child has trapped */ |
| #define CLD_STOPPED 5 /* Child has stopped */ |
| #define CLD_CONTINUED 6 /* Stopped child has continued */ |
| |
| /* codes for SIGPOLL */ |
| #define POLL_IN 1 /* Data input available */ |
| #define POLL_OUT 2 /* Output buffers available */ |
| #define POLL_MSG 3 /* Input message available */ |
| #define POLL_ERR 4 /* I/O Error */ |
| #define POLL_PRI 5 /* High priority input available */ |
| #define POLL_HUP 4 /* Device disconnected */ |
| |
| #endif |
| |
| #if __POSIX_VISIBLE || __XSI_VISIBLE |
| struct __siginfo; |
| |
| /* |
| * Signal vector "template" used in sigaction call. |
| */ |
| struct sigaction { |
| union { |
| void (*__sa_handler)(int); |
| void (*__sa_sigaction)(int, struct __siginfo *, void *); |
| } __sigaction_u; /* signal handler */ |
| int sa_flags; /* see signal options below */ |
| sigset_t sa_mask; /* signal mask to apply */ |
| }; |
| |
| #define sa_handler __sigaction_u.__sa_handler |
| #endif |
| |
| #if __XSI_VISIBLE |
| /* If SA_SIGINFO is set, sa_sigaction must be used instead of sa_handler. */ |
| #define sa_sigaction __sigaction_u.__sa_sigaction |
| #endif |
| |
| #if __POSIX_VISIBLE || __XSI_VISIBLE |
| #define SA_NOCLDSTOP 0x0008 /* do not generate SIGCHLD on child stop */ |
| #endif /* __POSIX_VISIBLE || __XSI_VISIBLE */ |
| |
| #if __XSI_VISIBLE |
| #define SA_ONSTACK 0x0001 /* take signal on signal stack */ |
| #define SA_RESTART 0x0002 /* restart system call on signal return */ |
| #define SA_RESETHAND 0x0004 /* reset to SIG_DFL when taking signal */ |
| #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 */ |
| #endif |
| |
| #if __BSD_VISIBLE |
| #define NSIG 32 /* number of old signals (counting 0) */ |
| #endif |
| |
| #if __POSIX_VISIBLE || __XSI_VISIBLE |
| #define SI_NOINFO 0 /* No signal info besides si_signo. */ |
| #define SI_USER 0x10001 /* Signal sent by kill(). */ |
| #define SI_QUEUE 0x10002 /* Signal sent by the sigqueue(). */ |
| #define SI_TIMER 0x10003 /* Signal generated by expiration of */ |
| /* a timer set by timer_settime(). */ |
| #define SI_ASYNCIO 0x10004 /* Signal generated by completion of */ |
| /* an asynchronous I/O request.*/ |
| #define SI_MESGQ 0x10005 /* Signal generated by arrival of a */ |
| /* message on an empty message queue. */ |
| #define SI_FREEBSD_KERNEL 0x10006 |
| #endif |
| #if __BSD_VISIBLE |
| #define SI_UNDEFINED 0 |
| #endif |
| |
| #if __BSD_VISIBLE |
| typedef __sighandler_t *sig_t; /* type of pointer to a signal function */ |
| typedef void __siginfohandler_t(int, struct __siginfo *, void *); |
| #endif |
| |
| #if __XSI_VISIBLE |
| /* |
| * Structure used in sigaltstack call. |
| */ |
| #if __BSD_VISIBLE |
| typedef struct sigaltstack { |
| #else |
| typedef struct { |
| #endif |
| char *ss_sp; /* signal stack base */ |
| __size_t ss_size; /* signal stack length */ |
| int ss_flags; /* SS_DISABLE and/or SS_ONSTACK */ |
| } stack_t; |
| |
| #define SS_ONSTACK 0x0001 /* take signal on alternate stack */ |
| #define SS_DISABLE 0x0004 /* disable taking signals on alternate stack */ |
| #define MINSIGSTKSZ __MINSIGSTKSZ /* minimum stack size */ |
| #define SIGSTKSZ (MINSIGSTKSZ + 32768) /* recommended stack size */ |
| #endif |
| |
| #if __BSD_VISIBLE |
| /* |
| * 4.3 compatibility: |
| * Signal vector "template" used in sigvec call. |
| */ |
| struct sigvec { |
| __sighandler_t *sv_handler; /* 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 |
| |
| /* Keep this in one place only */ |
| #if defined(_FREEBSD_KERNEL) && defined(COMPAT_43) && \ |
| !defined(__i386__) |
| struct osigcontext { |
| int _not_used; |
| }; |
| #endif |
| |
| #if __XSI_VISIBLE |
| /* |
| * Structure used in sigstack call. |
| */ |
| struct sigstack { |
| /* XXX ss_sp's type should be `void *'. */ |
| char *ss_sp; /* signal stack pointer */ |
| int ss_onstack; /* current status */ |
| }; |
| #endif |
| |
| #if __BSD_VISIBLE || __POSIX_VISIBLE > 0 && __POSIX_VISIBLE <= 200112 |
| /* |
| * Macro for converting signal number to a mask suitable for |
| * sigblock(). |
| */ |
| #define sigmask(m) (1 << ((m)-1)) |
| #endif |
| |
| #if __BSD_VISIBLE |
| #define BADSIG SIG_ERR |
| #endif |
| |
| #if __POSIX_VISIBLE || __XSI_VISIBLE |
| /* |
| * 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 */ |
| #endif |
| |
| /* |
| * For historical reasons; programs expect signal's return value to be |
| * defined by <sys/signal.h>. |
| */ |
| __BEGIN_DECLS |
| __sighandler_t *signal(int, __sighandler_t *); |
| __END_DECLS |
| #endif //0 |
| |
| #endif /* !_BSD_SYS_SIGNAL_H_ */ |
