X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/1c79356b52d46aa6b508fb032f5ae709b1f2897b..0c530ab8987f0ae6a1a3d9284f40182b88852816:/bsd/sys/signal.h diff --git a/bsd/sys/signal.h b/bsd/sys/signal.h index 136b3d1f0..27914af93 100644 --- a/bsd/sys/signal.h +++ b/bsd/sys/signal.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * @@ -63,7 +63,10 @@ #ifndef _SYS_SIGNAL_H_ #define _SYS_SIGNAL_H_ -#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE) +#include +#include + +#if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) #define NSIG 32 /* counting 0; could be 33 (mask is 1-32) */ #endif @@ -73,83 +76,330 @@ #define SIGINT 2 /* interrupt */ #define SIGQUIT 3 /* quit */ #define SIGILL 4 /* illegal instruction (not reset when caught) */ -#if !defined(_POSIX_SOURCE) #define SIGTRAP 5 /* trace trap (not reset when caught) */ -#endif #define SIGABRT 6 /* abort() */ -#if !defined(_POSIX_SOURCE) +#if defined(_POSIX_C_SOURCE) +#define SIGPOLL 7 /* pollable event ([XSR] generated, not supported) */ +#else /* !_POSIX_C_SOURCE */ #define SIGIOT SIGABRT /* compatibility */ #define SIGEMT 7 /* EMT instruction */ -#endif +#endif /* !_POSIX_C_SOURCE */ #define SIGFPE 8 /* floating point exception */ #define SIGKILL 9 /* kill (cannot be caught or ignored) */ -#if !defined(_POSIX_SOURCE) #define SIGBUS 10 /* bus error */ -#endif #define SIGSEGV 11 /* segmentation violation */ -#if !defined(_POSIX_SOURCE) #define SIGSYS 12 /* bad argument to system call */ -#endif #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 */ -#if !defined(_POSIX_SOURCE) #define SIGURG 16 /* urgent condition on IO channel */ -#endif #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_SOURCE) +#if !defined(_POSIX_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) #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(__cplusplus) +#if defined(_ANSI_SOURCE) || defined(_POSIX_C_SOURCE) || 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 */ #define SIG_DFL (void (*)(int))0 #define SIG_IGN (void (*)(int))1 -#define SIG_ERR (void (*)(int))-1 +#define SIG_HOLD (void (*)(int))5 +#define SIG_ERR ((void (*)(int))-1) #else -#define SIG_DFL (void (*)())0 -#define SIG_IGN (void (*)())1 -#define SIG_ERR (void (*)())-1 +/* 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 -typedef unsigned int sigset_t; +#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 + +#ifndef _SIGSET_T +#define _SIGSET_T +typedef __darwin_sigset_t sigset_t; +#endif + +#ifndef _SIZE_T +#define _SIZE_T +typedef __darwin_size_t size_t; +#endif + +#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 + +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 /* A notification function will be called to perform notification */ + +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 */ +}; + +// LP64todo - should this move? +#ifdef BSD_KERNEL_PRIVATE + +union user_sigval { + struct { + int pad; /* assumes Motorolla byte order */ + int sival_int; + } size_equivalent; + user_addr_t sival_ptr; +}; + +struct user_sigevent { + int sigev_notify; /* Notification type */ + int sigev_signo; /* Signal number */ + union user_sigval sigev_value; /* Signal value */ + user_addr_t sigev_notify_function; /* Notify function */ + user_addr_t sigev_notify_attributes; /* Notify attributes */ +}; + +#endif /* BSD_KERNEL_PRIVATE */ + +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; + +#ifdef BSD_KERNEL_PRIVATE + +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 */ + 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; + +#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 + */ + +/* Values for si_code */ + +/* Codes for SIGILL */ +#ifndef _POSIX_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 */ +#ifndef _POSIX_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 -NOTIMP */ +#define FPE_INTOVF 8 /* [XSI] integer overflow -NOTIMP */ + +/* Codes for SIGSEGV */ +#ifndef _POSIX_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 +#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 */ +#ifndef _POSIX_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 { -#if defined(__cplusplus) - void (*sa_handler)(int); /* signal handler */ -#else - void (*sa_handler)(); /* signal handler */ -#endif /* __cplusplus */ + union __sigaction_u __sigaction_u; /* signal handler */ + sigset_t sa_mask; /* signal mask to apply */ + int sa_flags; /* see signal options below */ +}; + +#ifdef BSD_KERNEL_PRIVATE +#include + +union __user_sigaction_u { + user_addr_t __sa_handler; + user_addr_t __sa_sigaction; +}; + +struct user_sigaction { + union __user_sigaction_u __sigaction_u; /* signal handler */ sigset_t sa_mask; /* signal mask to apply */ int sa_flags; /* see signal options below */ }; -#if !defined(_POSIX_SOURCE) + +struct __user_sigaction { + union __user_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 */ +}; + +#undef SIG_DFL +#undef SIG_IGN +#undef SIG_ERR +#define SIG_DFL ((user_addr_t)0LL) +#define SIG_IGN ((user_addr_t)1LL) +#define SIG_ERR ((user_addr_t)-1LL) + +#endif /* BSD_KERNEL_PRIVATE */ + + +/* 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_DISABLE 0x0004 /* disable taking signals on alternate stack */ -#define SA_USERTRAMP 0x0100 /* do not bounce off kernel's sigtramp */ -#endif +#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 +#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 */ /* * Flags for sigprocmask: @@ -158,34 +408,60 @@ struct sigaction { #define SIG_UNBLOCK 2 /* unblock specified signal set */ #define SIG_SETMASK 3 /* set specified signal set */ -#if !defined(_POSIX_SOURCE) -#include -typedef void (*sig_t) __P((int)); /* type of signal function */ +/* 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 */ + +#ifndef _POSIX_C_SOURCE +typedef void (*sig_t)(int); /* type of signal function */ +#endif /* * Structure used in sigaltstack call. */ -struct sigaltstack { - char *ss_sp; /* signal stack base */ - int ss_size; /* signal stack length */ - int ss_flags; /* SA_DISABLE and/or SA_ONSTACK */ +#ifdef BSD_KERNEL_PRIVATE + +struct user_sigaltstack { + user_addr_t ss_sp; /* signal stack base */ + user_size_t ss_size; /* signal stack length */ + int ss_flags __attribute((aligned(8))); /* SA_DISABLE and/or SA_ONSTACK */ }; -#define MINSIGSTKSZ 8192 /* minimum allowable stack */ -#define SIGSTKSZ (MINSIGSTKSZ + 32768) /* recommended stack size */ +#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 /* * 4.3 compatibility: * Signal vector "template" used in sigvec call. */ struct sigvec { - void (*sv_handler)(); /* signal handler */ + 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 */ /* * Structure used in sigstack call. @@ -195,26 +471,27 @@ struct sigstack { int ss_onstack; /* current status */ }; +#ifndef _POSIX_C_SOURCE /* * Macro for converting signal number to a mask suitable for * sigblock(). */ #define sigmask(m) (1 << ((m)-1)) -#ifdef KERNEL - /* - * signals delivered on a per-thread basis. - */ - #define threadmask (sigmask(SIGILL)|sigmask(SIGTRAP)|\ - sigmask(SIGIOT)|sigmask(SIGEMT)|\ - sigmask(SIGFPE)|sigmask(SIGBUS)|\ - sigmask(SIGSEGV)|sigmask(SIGSYS)|\ - sigmask(SIGPIPE)) -#endif /* KERNEL */ +#ifdef BSD_KERNEL_PRIVATE +/* + * signals delivered on a per-thread basis. + */ +#define threadmask (sigmask(SIGILL)|sigmask(SIGTRAP)|\ + sigmask(SIGIOT)|sigmask(SIGEMT)|\ + sigmask(SIGFPE)|sigmask(SIGBUS)|\ + sigmask(SIGSEGV)|sigmask(SIGSYS)|\ + sigmask(SIGPIPE)) +#endif /* BSD_KERNEL_PRIVATE */ #define BADSIG SIG_ERR -#endif /* !_POSIX_SOURCE */ +#endif /* !_POSIX_C_SOURCE */ #endif /* !_ANSI_SOURCE */ /* @@ -222,6 +499,6 @@ struct sigstack { * defined by . */ __BEGIN_DECLS -void (*signal __P((int, void (*) __P((int))))) __P((int)); +void (*signal(int, void (*)(int)))(int); __END_DECLS #endif /* !_SYS_SIGNAL_H_ */