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siginfo.h

/*
 * 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, 2001, 2003 Ralf Baechle
 * Copyright (C) 2000, 2001 Silicon Graphics, Inc.
 */
#ifndef _ASM_SIGINFO_H
#define _ASM_SIGINFO_H


#define __ARCH_SIGEV_PREAMBLE_SIZE (sizeof(long) + 2*sizeof(int))
#undef __ARCH_SI_TRAPNO /* exception code needs to fill this ...  */

#define HAVE_ARCH_SIGINFO_T

/*
 * We duplicate the generic versions - <asm-generic/siginfo.h> is just borked
 * by design ...
 */
#define HAVE_ARCH_COPY_SIGINFO
struct siginfo;

/*
 * Careful to keep union _sifields from shifting ...
 */
#ifdef CONFIG_32BIT
#define __ARCH_SI_PREAMBLE_SIZE (3 * sizeof(int))
#endif
#ifdef CONFIG_64BIT
#define __ARCH_SI_PREAMBLE_SIZE (4 * sizeof(int))
#endif

#include <asm-generic/siginfo.h>

typedef struct siginfo {
      int si_signo;
      int si_code;
      int si_errno;
      int __pad0[SI_MAX_SIZE / sizeof(int) - SI_PAD_SIZE - 3];

      union {
            int _pad[SI_PAD_SIZE];

            /* kill() */
            struct {
                  pid_t _pid;       /* sender's pid */
                  __ARCH_SI_UID_T _uid;   /* sender's uid */
            } _kill;

            /* POSIX.1b timers */
            struct {
                  timer_t _tid;           /* timer id */
                  int _overrun;           /* overrun count */
                  char _pad[sizeof( __ARCH_SI_UID_T) - sizeof(int)];
                  sigval_t _sigval; /* same as below */
                  int _sys_private;       /* not to be passed to user */
            } _timer;

            /* POSIX.1b signals */
            struct {
                  pid_t _pid;       /* sender's pid */
                  __ARCH_SI_UID_T _uid;   /* sender's uid */
                  sigval_t _sigval;
            } _rt;

            /* SIGCHLD */
            struct {
                  pid_t _pid;       /* which child */
                  __ARCH_SI_UID_T _uid;   /* sender's uid */
                  int _status;            /* exit code */
                  clock_t _utime;
                  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 __user *_addr; /* faulting insn/memory ref. */
#ifdef __ARCH_SI_TRAPNO
                  int _trapno;      /* TRAP # which caused the signal */
#endif
            } _sigfault;

            /* SIGPOLL, SIGXFSZ (To do ...)  */
            struct {
                  __ARCH_SI_BAND_T _band; /* POLL_IN, POLL_OUT, POLL_MSG */
                  int _fd;
            } _sigpoll;
      } _sifields;
} siginfo_t;

/*
 * si_code values
 * Again these have been choosen to be IRIX compatible.
 */
#undef SI_ASYNCIO
#undef SI_TIMER
#undef SI_MESGQ
#define SI_ASYNCIO      -2    /* sent by AIO completion */
#define SI_TIMER __SI_CODE(__SI_TIMER, -3) /* sent by timer expiration */
#define SI_MESGQ __SI_CODE(__SI_MESGQ, -4) /* sent by real time mesq state change */

#ifdef __KERNEL__

/*
 * Duplicated here because of <asm-generic/siginfo.h> braindamage ...
 */
#include <linux/string.h>

static inline void copy_siginfo(struct siginfo *to, struct siginfo *from)
{
      if (from->si_code < 0)
            memcpy(to, from, sizeof(*to));
      else
            /* _sigchld is currently the largest know union member */
            memcpy(to, from, 3*sizeof(int) + sizeof(from->_sifields._sigchld));
}

#endif

#endif /* _ASM_SIGINFO_H */

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