X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/6601e61aa18bf4f09af135ff61fc7f4771d23b06..3903760236c30e3b5ace7a4eefac3a269d68957c:/bsd/sys/signal.h?ds=sidebyside diff --git a/bsd/sys/signal.h b/bsd/sys/signal.h index 0fa8fb1cb..2483e8db3 100644 --- a/bsd/sys/signal.h +++ b/bsd/sys/signal.h @@ -1,23 +1,29 @@ /* - * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * - * The contents of this file constitute Original Code as defined in and - * are subject to the Apple Public Source License Version 1.1 (the - * "License"). You may not use this file except in compliance with the - * License. Please obtain a copy of the License at - * http://www.apple.com/publicsource and read it before using this file. + * 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. * - * This Original Code and all software distributed under the License are - * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * 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 OR NON-INFRINGEMENT. Please see the - * License for the specific language governing rights and limitations - * under the License. + * 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_LICENSE_HEADER_END@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */ /* @@ -65,9 +71,12 @@ #include #include +#include + +#define __DARWIN_NSIG 32 /* counting 0; could be 33 (mask is 1-32) */ -#if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) -#define 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 /* sigcontext; codes for SIGILL, SIGFPE */ @@ -78,12 +87,12 @@ #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) +#if (defined(_POSIX_C_SOURCE) && !defined(_DARWIN_C_SOURCE)) #define SIGPOLL 7 /* pollable event ([XSR] generated, not supported) */ -#else /* !_POSIX_C_SOURCE */ +#else /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ #define SIGIOT SIGABRT /* compatibility */ #define SIGEMT 7 /* EMT instruction */ -#endif /* !_POSIX_C_SOURCE */ +#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 */ @@ -99,21 +108,21 @@ #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) +#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) +#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) || defined(_POSIX_C_SOURCE) || defined(__cplusplus) +#if defined(_ANSI_SOURCE) || __DARWIN_UNIX03 || defined(__cplusplus) /* * Language spec sez we must list exactly one parameter, even though we * actually supply three. Ugh! @@ -134,54 +143,19 @@ #ifndef _ANSI_SOURCE #include -#ifndef _MCONTEXT_T -#define _MCONTEXT_T -typedef __darwin_mcontext_t mcontext_t; -#endif - -#ifndef _POSIX_C_SOURCE -#ifndef _MCONTEXT64_T -#define _MCONTEXT64_T -typedef __darwin_mcontext64_t mcontext64_t; -#endif -#endif /* _POSIX_C_SOURCE */ - -#ifndef _PID_T -#define _PID_T -typedef __darwin_pid_t pid_t; -#endif - -#ifndef _PTHREAD_ATTR_T -#define _PTHREAD_ATTR_T -typedef __darwin_pthread_attr_t pthread_attr_t; -#endif +#include -#ifndef _SIGSET_T -#define _SIGSET_T -typedef __darwin_sigset_t sigset_t; -#endif +#ifndef KERNEL +#include +#endif /* KERNEL */ -#ifndef _SIZE_T -#define _SIZE_T -typedef __darwin_size_t size_t; -#endif +#include +#include -#ifndef _UCONTEXT_T -#define _UCONTEXT_T -typedef __darwin_ucontext_t ucontext_t; -#endif - -#ifndef _POSIX_C_SOURCE -#ifndef _UCONTEXT64_T -#define _UCONTEXT64_T -typedef __darwin_ucontext64_t ucontext64_t; -#endif -#endif /* _POSIX_C_SOURCE */ - -#ifndef _UID_T -#define _UID_T -typedef __darwin_uid_t uid_t; -#endif +#include +#include +#include +#include union sigval { /* Members as suggested by Annex C of POSIX 1003.1b. */ @@ -189,10 +163,11 @@ union sigval { void *sival_ptr; }; -#define SIGEV_NONE 0 /* No async notification */ -#define SIGEV_SIGNAL 1 /* aio - completion notification */ -#define SIGEV_THREAD 3 /* A notification function will be called to perform notification */ +#define SIGEV_NONE 0 /* No async notification */ +#define SIGEV_SIGNAL 1 /* aio - completion notification */ +#define SIGEV_THREAD 3 /* [NOTIMP] [RTS] call notification function */ +#ifndef KERNEL struct sigevent { int sigev_notify; /* Notification type */ int sigev_signo; /* Signal number */ @@ -200,20 +175,46 @@ struct sigevent { void (*sigev_notify_function)(union sigval); /* Notification function */ pthread_attr_t *sigev_notify_attributes; /* Notification attributes */ }; +#endif /* KERNEL */ -// LP64todo - should this move? #ifdef BSD_KERNEL_PRIVATE -#if __DARWIN_ALIGN_NATURAL -#pragma options align=natural -#endif +union user64_sigval { + struct { + uint32_t pad; /* assumes Motorola byte order */ + int32_t sival_int; + } size_equivalent; + user64_addr_t sival_ptr; +}; + +union user32_sigval { + /* Members as suggested by Annex C of POSIX 1003.1b. */ + int32_t sival_int; + user32_addr_t sival_ptr; +}; union user_sigval { struct { - int pad; /* assumes Motorolla byte order */ - int sival_int; + uint32_t pad; /* assumes Motorola byte order */ + int32_t sival_int; } size_equivalent; - user_addr_t sival_ptr; + user_addr_t sival_ptr; +}; + +struct user64_sigevent { + int sigev_notify; /* Notification type */ + int sigev_signo; /* Signal number */ + union user64_sigval sigev_value; /* Signal value */ + user64_addr_t sigev_notify_function; /* Notify function */ + user64_addr_t sigev_notify_attributes; /* Notify attributes */ +}; + +struct user32_sigevent { + int sigev_notify; /* Notification type */ + int sigev_signo; /* Signal number */ + union user32_sigval sigev_value; /* Signal value */ + user32_addr_t sigev_notify_function; /* Notify function */ + user32_addr_t sigev_notify_attributes; /* Notify attributes */ }; struct user_sigevent { @@ -224,10 +225,6 @@ struct user_sigevent { user_addr_t sigev_notify_attributes; /* Notify attributes */ }; -#if __DARWIN_ALIGN_NATURAL -#pragma options align=reset -#endif - #endif /* BSD_KERNEL_PRIVATE */ typedef struct __siginfo { @@ -240,48 +237,70 @@ typedef struct __siginfo { 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 */ + unsigned long __pad[7]; /* Reserved for Future Use */ } siginfo_t; #ifdef BSD_KERNEL_PRIVATE -#if __DARWIN_ALIGN_NATURAL -#pragma options align=natural -#endif - -typedef struct __user_siginfo { +typedef struct user_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 */ - user_addr_t si_addr; /* faulting instruction */ + user_addr_t si_addr; /* faulting instruction (see below) */ union user_sigval si_value; /* signal value */ user_long_t si_band; /* band event for SIGPOLL */ user_ulong_t pad[7]; /* Reserved for Future Use */ } user_siginfo_t; -#if __DARWIN_ALIGN_NATURAL -#pragma options align=reset -#endif +typedef struct user64_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 */ + user64_addr_t si_addr; /* faulting instruction (see below) */ + union user64_sigval si_value; /* signal value */ + user64_long_t si_band; /* band event for SIGPOLL */ + user64_ulong_t __pad[7]; /* Reserved for Future Use */ +} user64_siginfo_t; + +typedef struct user32_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 */ + user32_addr_t si_addr; /* faulting instruction (see below) */ + union user32_sigval si_value; /* signal value */ + user32_long_t si_band; /* band event for SIGPOLL */ + user32_ulong_t __pad[7]; /* Reserved for Future Use */ +} user32_siginfo_t; + +void siginfo_user_to_user32(user_siginfo_t *, user32_siginfo_t *); +void siginfo_user_to_user64(user_siginfo_t *, user64_siginfo_t *); #endif /* BSD_KERNEL_PRIVATE */ /* - * Incase of SIGILL and SIGFPE, si_addr contains the address of - * faulting instruction. - * Incase of SIGSEGV and SIGBUS, si_addr contains address of - * faulting memory reference. - * Incase of SIGCHLD, si_pid willhave child process ID, - * si_status will contain exit value or signal. - * si_uid contains real user ID of the process that sent the signal + * 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 */ -#ifndef _POSIX_C_SOURCE +#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 */ @@ -294,7 +313,7 @@ typedef struct __user_siginfo { #define ILL_BADSTK 8 /* [XSI] internal stack error -NOTIMP */ /* Codes for SIGFPE */ -#ifndef _POSIX_C_SOURCE +#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 */ @@ -303,18 +322,18 @@ typedef struct __user_siginfo { #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 -NOTIMP */ -#define FPE_INTOVF 8 /* [XSI] integer overflow -NOTIMP */ +#define FPE_INTDIV 7 /* [XSI] integer divide by zero */ +#define FPE_INTOVF 8 /* [XSI] integer overflow */ /* Codes for SIGSEGV */ -#ifndef _POSIX_C_SOURCE +#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 */ -#ifndef _POSIX_C_SOURCE +#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 */ @@ -326,7 +345,7 @@ typedef struct __user_siginfo { #define TRAP_TRACE 2 /* [XSI] Process trace trap -NOTIMP */ /* Codes for SIGCHLD */ -#ifndef _POSIX_C_SOURCE +#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 */ @@ -371,32 +390,60 @@ struct sigaction { #ifdef BSD_KERNEL_PRIVATE #include -#if __DARWIN_ALIGN_NATURAL -#pragma options align=natural -#endif +union __user32_sigaction_u { + user32_addr_t __sa_handler; + user32_addr_t __sa_sigaction; +}; + +struct user32_sigaction { + union __user32_sigaction_u __sigaction_u; /* signal handler */ + sigset_t sa_mask; /* signal mask to apply */ + int sa_flags; /* see signal options below */ +}; + +struct __user32_sigaction { + union __user32_sigaction_u __sigaction_u; /* signal handler */ + user32_addr_t sa_tramp; + sigset_t sa_mask; /* signal mask to apply */ + int sa_flags; /* see signal options below */ +}; + +union __user64_sigaction_u { + user64_addr_t __sa_handler; + user64_addr_t __sa_sigaction; +}; + +struct user64_sigaction { + union __user64_sigaction_u __sigaction_u; /* signal handler */ + sigset_t sa_mask; /* signal mask to apply */ + int sa_flags; /* see signal options below */ +}; + +struct __user64_sigaction { + union __user64_sigaction_u __sigaction_u; /* signal handler */ + user64_addr_t sa_tramp; /* signal mask to apply */ + sigset_t sa_mask; /* signal mask to apply */ + int sa_flags; /* see signal options below */ +}; -union __user_sigaction_u { +union __kern_sigaction_u { user_addr_t __sa_handler; user_addr_t __sa_sigaction; }; -struct user_sigaction { - union __user_sigaction_u __sigaction_u; /* signal handler */ +struct kern_sigaction { + union __kern_sigaction_u __sigaction_u; /* signal handler */ sigset_t sa_mask; /* signal mask to apply */ int sa_flags; /* see signal options below */ }; -struct __user_sigaction { - union __user_sigaction_u __sigaction_u; /* signal handler */ +struct __kern_sigaction { + union __kern_sigaction_u __sigaction_u; /* signal handler */ user_addr_t sa_tramp; /* signal mask to apply */ sigset_t sa_mask; /* signal mask to apply */ int sa_flags; /* see signal options below */ }; -#if __DARWIN_ALIGN_NATURAL -#pragma options align=reset -#endif - #undef SIG_DFL #undef SIG_IGN #undef SIG_ERR @@ -413,17 +460,24 @@ struct __user_sigaction { #define SA_ONSTACK 0x0001 /* take signal on signal stack */ #define SA_RESTART 0x0002 /* restart system on signal return */ -#define SA_DISABLE 0x0004 /* disable taking signals on alternate stack */ +#ifdef BSD_KERNEL_PRIVATE +#define SA_DISABLE 0x0004 /* disable taking signals on alternate stack - for user_sigaltstack.ss_flags only */ +#endif /* BSD_KERNEL_PRIVATE */ #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 */ -#ifndef _POSIX_C_SOURCE +#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 */ +#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: @@ -439,7 +493,7 @@ struct __user_sigaction { #define SI_ASYNCIO 0x10004 /* [CX] aio request completion */ #define SI_MESGQ 0x10005 /* [CX] from message arrival on empty queue */ -#ifndef _POSIX_C_SOURCE +#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) typedef void (*sig_t)(int); /* type of signal function */ #endif @@ -448,33 +502,32 @@ typedef void (*sig_t)(int); /* type of signal function */ */ #ifdef BSD_KERNEL_PRIVATE -#if __DARWIN_ALIGN_NATURAL -#pragma options align=natural -#endif +struct user32_sigaltstack { + user32_addr_t ss_sp; /* signal stack base */ + user32_size_t ss_size; /* signal stack length */ + int ss_flags; /* SA_DISABLE and/or SA_ONSTACK */ +}; + +struct user64_sigaltstack { + user64_addr_t ss_sp; /* signal stack base */ + user64_size_t ss_size; /* signal stack length */ + int ss_flags; /* SA_DISABLE and/or SA_ONSTACK */ +}; -struct user_sigaltstack { +struct kern_sigaltstack { user_addr_t ss_sp; /* signal stack base */ user_size_t ss_size; /* signal stack length */ int ss_flags; /* SA_DISABLE and/or SA_ONSTACK */ }; -#if __DARWIN_ALIGN_NATURAL -#pragma options align=reset -#endif - #endif /* BSD_KERNEL_PRIVATE */ -#ifndef _STACK_T -#define _STACK_T -typedef __darwin_stack_t stack_t; -#endif - #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 */ -#ifndef _POSIX_C_SOURCE +#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) /* * 4.3 compatibility: * Signal vector "template" used in sigvec call. @@ -493,7 +546,7 @@ struct sigvec { #define SV_SIGINFO SA_SIGINFO #define sv_onstack sv_flags /* isn't compatibility wonderful! */ -#endif /* !_POSIX_C_SOURCE */ +#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ /* * Structure used in sigstack call. @@ -503,14 +556,14 @@ struct sigstack { int ss_onstack; /* current status */ }; -#ifndef _POSIX_C_SOURCE +#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)) -#ifdef BSD_KERNEL_PRIVATE +#ifdef KERNEL_PRIVATE /* * signals delivered on a per-thread basis. */ @@ -518,12 +571,25 @@ struct sigstack { sigmask(SIGIOT)|sigmask(SIGEMT)|\ sigmask(SIGFPE)|sigmask(SIGBUS)|\ sigmask(SIGSEGV)|sigmask(SIGSYS)|\ - sigmask(SIGPIPE)) -#endif /* BSD_KERNEL_PRIVATE */ + sigmask(SIGPIPE)|sigmask(SIGKILL)) + +#define workq_threadmask (threadmask | sigcantmask | sigmask(SIGPROF)) + +/* + * Signals carried across exec. + */ +#define execmask (sigmask(SIGHUP)|sigmask(SIGINT)|\ + sigmask(SIGQUIT)|sigmask(SIGKILL)|\ + sigmask(SIGTERM)|sigmask(SIGSTOP)|\ + sigmask(SIGTSTP)|sigmask(SIGCONT)|\ + sigmask(SIGTTIN)|sigmask(SIGTTOU)|\ + sigmask(SIGUSR1)|sigmask(SIGUSR2)) + +#endif /* KERNEL_PRIVATE */ #define BADSIG SIG_ERR -#endif /* !_POSIX_C_SOURCE */ +#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ #endif /* !_ANSI_SOURCE */ /*