siginfo.h
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上传日期:2013-02-24
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- /* $Id: siginfo.h,v 1.5 1999/08/18 23:37:49 ralf Exp $
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1998, 1999 by Ralf Baechle
- */
- #ifndef _ASM_SIGINFO_H
- #define _ASM_SIGINFO_H
- #include <linux/types.h>
- /* This structure matches IRIX 32/n32 ABIs for binary compatibility. */
- typedef union sigval {
- int sival_int;
- void *sival_ptr;
- } sigval_t;
- /* This structure matches IRIX 32/n32 ABIs for binary compatibility but
- has Linux extensions. */
- #define SI_MAX_SIZE 128
- #define SI_PAD_SIZE ((SI_MAX_SIZE/sizeof(int)) - 3)
- typedef struct siginfo {
- int si_signo;
- int si_code;
- int si_errno;
- union {
- int _pad[SI_PAD_SIZE];
- /* kill() */
- struct {
- pid_t _pid; /* sender's pid */
- uid_t _uid; /* sender's uid */
- } _kill;
- /* SIGCHLD */
- struct {
- pid_t _pid; /* which child */
- uid_t _uid; /* sender's uid */
- clock_t _utime;
- int _status; /* exit code */
- clock_t _stime;
- } _sigchld;
- /* IRIX SIGCHLD */
- struct {
- pid_t _pid; /* which child */
- clock_t _utime;
- int _status; /* exit code */
- clock_t _stime;
- } _irix_sigchld;
- /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
- struct {
- void *_addr; /* faulting insn/memory ref. */
- } _sigfault;
- /* SIGPOLL, SIGXFSZ (To do ...) */
- struct {
- int _band; /* POLL_IN, POLL_OUT, POLL_MSG */
- int _fd;
- } _sigpoll;
- /* POSIX.1b timers */
- struct {
- unsigned int _timer1;
- unsigned int _timer2;
- } _timer;
- /* POSIX.1b signals */
- struct {
- pid_t _pid; /* sender's pid */
- uid_t _uid; /* sender's uid */
- sigval_t _sigval;
- } _rt;
- } _sifields;
- } siginfo_t;
- /*
- * How these fields are to be accessed.
- */
- #define si_pid _sifields._kill._pid
- #define si_uid _sifields._kill._uid
- #define si_status _sifields._sigchld._status
- #define si_utime _sifields._sigchld._utime
- #define si_stime _sifields._sigchld._stime
- #define si_value _sifields._rt._sigval
- #define si_int _sifields._rt._sigval.sival_int
- #define si_ptr _sifields._rt._sigval.sival_ptr
- #define si_addr _sifields._sigfault._addr
- #define si_band _sifields._sigpoll._band
- #define si_fd _sifields._sigpoll._fd
- #ifdef __KERNEL__
- #define __SI_MASK 0xffff0000
- #define __SI_KILL (0 << 16)
- #define __SI_TIMER (1 << 16)
- #define __SI_POLL (2 << 16)
- #define __SI_FAULT (3 << 16)
- #define __SI_CHLD (4 << 16)
- #define __SI_RT (5 << 16)
- #define __SI_CODE(T,N) ((T) << 16 | ((N) & 0xffff))
- #else
- #define __SI_KILL 0
- #define __SI_TIMER 0
- #define __SI_POLL 0
- #define __SI_FAULT 0
- #define __SI_CHLD 0
- #define __SI_RT 0
- #define __SI_CODE(T,N) (N)
- #endif
- /*
- * si_code values
- * Again these have been choosen to be IRIX compatible.
- */
- #define SI_USER 0 /* sent by kill, sigsend, raise */
- #define SI_KERNEL 0x80 /* sent by the kernel from somewhere */
- #define SI_QUEUE -1 /* sent by sigqueue */
- #define SI_ASYNCIO -2 /* sent by AIO completion */
- #define SI_TIMER __SI_CODE(__SI_TIMER,-3) /* sent by timer expiration */
- #define SI_MESGQ -4 /* sent by real time mesq state change */
- #define SI_SIGIO -5 /* sent by queued SIGIO */
- #define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
- #define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
- /*
- * SIGILL si_codes
- */
- #define ILL_ILLOPC (__SI_FAULT|1) /* illegal opcode */
- #define ILL_ILLOPN (__SI_FAULT|2) /* illegal operand */
- #define ILL_ILLADR (__SI_FAULT|3) /* illegal addressing mode */
- #define ILL_ILLTRP (__SI_FAULT|4) /* illegal trap */
- #define ILL_PRVOPC (__SI_FAULT|5) /* privileged opcode */
- #define ILL_PRVREG (__SI_FAULT|6) /* privileged register */
- #define ILL_COPROC (__SI_FAULT|7) /* coprocessor error */
- #define ILL_BADSTK (__SI_FAULT|8) /* internal stack error */
- #define NSIGILL 8
- /*
- * SIGFPE si_codes
- */
- #define FPE_INTDIV (__SI_FAULT|1) /* integer divide by zero */
- #define FPE_INTOVF (__SI_FAULT|2) /* integer overflow */
- #define FPE_FLTDIV (__SI_FAULT|3) /* floating point divide by zero */
- #define FPE_FLTOVF (__SI_FAULT|4) /* floating point overflow */
- #define FPE_FLTUND (__SI_FAULT|5) /* floating point underflow */
- #define FPE_FLTRES (__SI_FAULT|6) /* floating point inexact result */
- #define FPE_FLTINV (__SI_FAULT|7) /* floating point invalid operation */
- #define FPE_FLTSUB (__SI_FAULT|8) /* subscript out of range */
- #define NSIGFPE 8
- /*
- * SIGSEGV si_codes
- */
- #define SEGV_MAPERR (__SI_FAULT|1) /* address not mapped to object */
- #define SEGV_ACCERR (__SI_FAULT|2) /* invalid permissions for mapped object */
- #define NSIGSEGV 2
- /*
- * SIGBUS si_codes
- */
- #define BUS_ADRALN (__SI_FAULT|1) /* invalid address alignment */
- #define BUS_ADRERR (__SI_FAULT|2) /* non-existant physical address */
- #define BUS_OBJERR (__SI_FAULT|3) /* object specific hardware error */
- #define NSIGBUS 3
- /*
- * SIGTRAP si_codes
- */
- #define TRAP_BRKPT (__SI_FAULT|1) /* process breakpoint */
- #define TRAP_TRACE (__SI_FAULT|2) /* process trace trap */
- #define NSIGTRAP 2
- /*
- * SIGCHLD si_codes
- */
- #define CLD_EXITED (__SI_CHLD|1) /* child has exited */
- #define CLD_KILLED (__SI_CHLD|2) /* child was killed */
- #define CLD_DUMPED (__SI_CHLD|3) /* child terminated abnormally */
- #define CLD_TRAPPED (__SI_CHLD|4) /* traced child has trapped */
- #define CLD_STOPPED (__SI_CHLD|5) /* child has stopped */
- #define CLD_CONTINUED (__SI_CHLD|6) /* stopped child has continued */
- #define NSIGCHLD 6
- /*
- * SIGPOLL si_codes
- */
- #define POLL_IN (__SI_POLL|1) /* data input available */
- #define POLL_OUT (__SI_POLL|2) /* output buffers available */
- #define POLL_MSG (__SI_POLL|3) /* input message available */
- #define POLL_ERR (__SI_POLL|4) /* i/o error */
- #define POLL_PRI (__SI_POLL|5) /* high priority input available */
- #define POLL_HUP (__SI_POLL|6) /* device disconnected */
- #define NSIGPOLL 6
- /*
- * sigevent definitions
- *
- * It seems likely that SIGEV_THREAD will have to be handled from
- * userspace, libpthread transmuting it to SIGEV_SIGNAL, which the
- * thread manager then catches and does the appropriate nonsense.
- * However, everything is written out here so as to not get lost.
- */
- #define SIGEV_NONE 128 /* other notification: meaningless */
- #define SIGEV_SIGNAL 129 /* notify via signal */
- #define SIGEV_CALLBACK 130 /* ??? */
- #define SIGEV_THREAD 131 /* deliver via thread creation */
- #define SIGEV_MAX_SIZE 64
- #define SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 4)
- /* XXX This one isn't yet IRIX / ABI compatible. */
- typedef struct sigevent {
- int sigev_notify;
- sigval_t sigev_value;
- int sigev_signo;
- union {
- int _pad[SIGEV_PAD_SIZE];
- struct {
- void (*_function)(sigval_t);
- void *_attribute; /* really pthread_attr_t */
- } _sigev_thread;
- } _sigev_un;
- } sigevent_t;
- #define sigev_notify_function _sigev_un._sigev_thread._function
- #define sigev_notify_attributes _sigev_un._sigev_thread._attribute
- #ifdef __KERNEL__
- #include <linux/string.h>
- extern inline void copy_siginfo(siginfo_t *to, siginfo_t *from)
- {
- if (from->si_code < 0)
- memcpy(to, from, sizeof(siginfo_t));
- else
- /* _sigchld is currently the largest know union member */
- memcpy(to, from, 3*sizeof(int) + sizeof(from->_sifields._sigchld));
- }
- extern int copy_siginfo_to_user(siginfo_t *to, siginfo_t *from);
- #endif /* __KERNEL__ */
- #endif /* _ASM_SIGINFO_H */