295 lines
8.2 KiB
C
295 lines
8.2 KiB
C
#ifndef _ASM_GENERIC_SIGINFO_H
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#define _ASM_GENERIC_SIGINFO_H
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#include <linux/compiler.h>
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#include <linux/types.h>
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typedef union sigval {
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int sival_int;
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void __user *sival_ptr;
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} sigval_t;
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/*
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* This is the size (including padding) of the part of the
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* struct siginfo that is before the union.
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*/
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#ifndef __ARCH_SI_PREAMBLE_SIZE
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#define __ARCH_SI_PREAMBLE_SIZE (3 * sizeof(int))
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#endif
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#define SI_MAX_SIZE 128
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#ifndef SI_PAD_SIZE
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#define SI_PAD_SIZE ((SI_MAX_SIZE - __ARCH_SI_PREAMBLE_SIZE) / sizeof(int))
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#endif
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#ifndef __ARCH_SI_UID_T
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#define __ARCH_SI_UID_T uid_t
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#endif
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/*
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* The default "si_band" type is "long", as specified by POSIX.
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* However, some architectures want to override this to "int"
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* for historical compatibility reasons, so we allow that.
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*/
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#ifndef __ARCH_SI_BAND_T
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#define __ARCH_SI_BAND_T long
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#endif
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#ifndef HAVE_ARCH_SIGINFO_T
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typedef struct siginfo {
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int si_signo;
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int si_errno;
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int si_code;
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union {
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int _pad[SI_PAD_SIZE];
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/* kill() */
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struct {
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pid_t _pid; /* sender's pid */
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__ARCH_SI_UID_T _uid; /* sender's uid */
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} _kill;
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/* POSIX.1b timers */
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struct {
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timer_t _tid; /* timer id */
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int _overrun; /* overrun count */
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char _pad[sizeof( __ARCH_SI_UID_T) - sizeof(int)];
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sigval_t _sigval; /* same as below */
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int _sys_private; /* not to be passed to user */
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} _timer;
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/* POSIX.1b signals */
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struct {
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pid_t _pid; /* sender's pid */
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__ARCH_SI_UID_T _uid; /* sender's uid */
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sigval_t _sigval;
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} _rt;
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/* SIGCHLD */
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struct {
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pid_t _pid; /* which child */
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__ARCH_SI_UID_T _uid; /* sender's uid */
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int _status; /* exit code */
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clock_t _utime;
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clock_t _stime;
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} _sigchld;
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/* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
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struct {
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void __user *_addr; /* faulting insn/memory ref. */
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#ifdef __ARCH_SI_TRAPNO
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int _trapno; /* TRAP # which caused the signal */
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#endif
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} _sigfault;
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/* SIGPOLL */
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struct {
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__ARCH_SI_BAND_T _band; /* POLL_IN, POLL_OUT, POLL_MSG */
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int _fd;
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} _sigpoll;
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} _sifields;
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} siginfo_t;
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#endif
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/*
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* How these fields are to be accessed.
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*/
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#define si_pid _sifields._kill._pid
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#define si_uid _sifields._kill._uid
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#define si_tid _sifields._timer._tid
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#define si_overrun _sifields._timer._overrun
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#define si_sys_private _sifields._timer._sys_private
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#define si_status _sifields._sigchld._status
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#define si_utime _sifields._sigchld._utime
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#define si_stime _sifields._sigchld._stime
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#define si_value _sifields._rt._sigval
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#define si_int _sifields._rt._sigval.sival_int
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#define si_ptr _sifields._rt._sigval.sival_ptr
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#define si_addr _sifields._sigfault._addr
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#ifdef __ARCH_SI_TRAPNO
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#define si_trapno _sifields._sigfault._trapno
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#endif
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#define si_band _sifields._sigpoll._band
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#define si_fd _sifields._sigpoll._fd
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#ifdef __KERNEL__
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#define __SI_MASK 0xffff0000u
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#define __SI_KILL (0 << 16)
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#define __SI_TIMER (1 << 16)
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#define __SI_POLL (2 << 16)
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#define __SI_FAULT (3 << 16)
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#define __SI_CHLD (4 << 16)
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#define __SI_RT (5 << 16)
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#define __SI_MESGQ (6 << 16)
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#define __SI_CODE(T,N) ((T) | ((N) & 0xffff))
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#else
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#define __SI_KILL 0
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#define __SI_TIMER 0
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#define __SI_POLL 0
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#define __SI_FAULT 0
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#define __SI_CHLD 0
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#define __SI_RT 0
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#define __SI_MESGQ 0
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#define __SI_CODE(T,N) (N)
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#endif
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/*
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* si_code values
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* Digital reserves positive values for kernel-generated signals.
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*/
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#define SI_USER 0 /* sent by kill, sigsend, raise */
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#define SI_KERNEL 0x80 /* sent by the kernel from somewhere */
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#define SI_QUEUE -1 /* sent by sigqueue */
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#define SI_TIMER __SI_CODE(__SI_TIMER,-2) /* sent by timer expiration */
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#define SI_MESGQ __SI_CODE(__SI_MESGQ,-3) /* sent by real time mesq state change */
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#define SI_ASYNCIO -4 /* sent by AIO completion */
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#define SI_SIGIO -5 /* sent by queued SIGIO */
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#define SI_TKILL -6 /* sent by tkill system call */
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#define SI_DETHREAD -7 /* sent by execve() killing subsidiary threads */
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#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
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#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
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/*
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* SIGILL si_codes
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*/
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#define ILL_ILLOPC (__SI_FAULT|1) /* illegal opcode */
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#define ILL_ILLOPN (__SI_FAULT|2) /* illegal operand */
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#define ILL_ILLADR (__SI_FAULT|3) /* illegal addressing mode */
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#define ILL_ILLTRP (__SI_FAULT|4) /* illegal trap */
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#define ILL_PRVOPC (__SI_FAULT|5) /* privileged opcode */
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#define ILL_PRVREG (__SI_FAULT|6) /* privileged register */
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#define ILL_COPROC (__SI_FAULT|7) /* coprocessor error */
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#define ILL_BADSTK (__SI_FAULT|8) /* internal stack error */
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#define NSIGILL 8
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/*
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* SIGFPE si_codes
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*/
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#define FPE_INTDIV (__SI_FAULT|1) /* integer divide by zero */
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#define FPE_INTOVF (__SI_FAULT|2) /* integer overflow */
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#define FPE_FLTDIV (__SI_FAULT|3) /* floating point divide by zero */
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#define FPE_FLTOVF (__SI_FAULT|4) /* floating point overflow */
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#define FPE_FLTUND (__SI_FAULT|5) /* floating point underflow */
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#define FPE_FLTRES (__SI_FAULT|6) /* floating point inexact result */
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#define FPE_FLTINV (__SI_FAULT|7) /* floating point invalid operation */
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#define FPE_FLTSUB (__SI_FAULT|8) /* subscript out of range */
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#define NSIGFPE 8
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/*
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* SIGSEGV si_codes
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*/
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#define SEGV_MAPERR (__SI_FAULT|1) /* address not mapped to object */
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#define SEGV_ACCERR (__SI_FAULT|2) /* invalid permissions for mapped object */
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#define NSIGSEGV 2
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/*
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* SIGBUS si_codes
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*/
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#define BUS_ADRALN (__SI_FAULT|1) /* invalid address alignment */
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#define BUS_ADRERR (__SI_FAULT|2) /* non-existant physical address */
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#define BUS_OBJERR (__SI_FAULT|3) /* object specific hardware error */
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#define NSIGBUS 3
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/*
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* SIGTRAP si_codes
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*/
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#define TRAP_BRKPT (__SI_FAULT|1) /* process breakpoint */
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#define TRAP_TRACE (__SI_FAULT|2) /* process trace trap */
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#define NSIGTRAP 2
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/*
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* SIGCHLD si_codes
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*/
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#define CLD_EXITED (__SI_CHLD|1) /* child has exited */
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#define CLD_KILLED (__SI_CHLD|2) /* child was killed */
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#define CLD_DUMPED (__SI_CHLD|3) /* child terminated abnormally */
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#define CLD_TRAPPED (__SI_CHLD|4) /* traced child has trapped */
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#define CLD_STOPPED (__SI_CHLD|5) /* child has stopped */
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#define CLD_CONTINUED (__SI_CHLD|6) /* stopped child has continued */
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#define NSIGCHLD 6
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/*
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* SIGPOLL si_codes
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*/
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#define POLL_IN (__SI_POLL|1) /* data input available */
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#define POLL_OUT (__SI_POLL|2) /* output buffers available */
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#define POLL_MSG (__SI_POLL|3) /* input message available */
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#define POLL_ERR (__SI_POLL|4) /* i/o error */
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#define POLL_PRI (__SI_POLL|5) /* high priority input available */
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#define POLL_HUP (__SI_POLL|6) /* device disconnected */
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#define NSIGPOLL 6
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/*
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* sigevent definitions
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*
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* It seems likely that SIGEV_THREAD will have to be handled from
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* userspace, libpthread transmuting it to SIGEV_SIGNAL, which the
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* thread manager then catches and does the appropriate nonsense.
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* However, everything is written out here so as to not get lost.
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*/
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#define SIGEV_SIGNAL 0 /* notify via signal */
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#define SIGEV_NONE 1 /* other notification: meaningless */
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#define SIGEV_THREAD 2 /* deliver via thread creation */
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#define SIGEV_THREAD_ID 4 /* deliver to thread */
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/*
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* This works because the alignment is ok on all current architectures
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* but we leave open this being overridden in the future
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*/
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#ifndef __ARCH_SIGEV_PREAMBLE_SIZE
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#define __ARCH_SIGEV_PREAMBLE_SIZE (sizeof(int) * 2 + sizeof(sigval_t))
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#endif
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#define SIGEV_MAX_SIZE 64
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#define SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE - __ARCH_SIGEV_PREAMBLE_SIZE) \
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/ sizeof(int))
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typedef struct sigevent {
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sigval_t sigev_value;
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int sigev_signo;
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int sigev_notify;
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union {
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int _pad[SIGEV_PAD_SIZE];
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int _tid;
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struct {
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void (*_function)(sigval_t);
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void *_attribute; /* really pthread_attr_t */
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} _sigev_thread;
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} _sigev_un;
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} sigevent_t;
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#define sigev_notify_function _sigev_un._sigev_thread._function
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#define sigev_notify_attributes _sigev_un._sigev_thread._attribute
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#define sigev_notify_thread_id _sigev_un._tid
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#ifdef __KERNEL__
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struct siginfo;
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void do_schedule_next_timer(struct siginfo *info);
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#ifndef HAVE_ARCH_COPY_SIGINFO
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#include <linux/string.h>
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static inline void copy_siginfo(struct siginfo *to, struct siginfo *from)
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{
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if (from->si_code < 0)
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memcpy(to, from, sizeof(*to));
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else
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/* _sigchld is currently the largest know union member */
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memcpy(to, from, __ARCH_SI_PREAMBLE_SIZE + sizeof(from->_sifields._sigchld));
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}
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#endif
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extern int copy_siginfo_to_user(struct siginfo __user *to, struct siginfo *from);
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#endif /* __KERNEL__ */
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#endif
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