LXR linux/arch/mips/include/asm/siginfo.h

   1/*
   2 * This file is subject to the terms and conditions of the GNU General Public
   3 * License.  See the file "COPYING" in the main directory of this archive
   4 * for more details.
   5 *
   6 * Copyright (C) 1998, 1999, 2001, 2003 Ralf Baechle
   7 * Copyright (C) 2000, 2001 Silicon Graphics, Inc.
   8 */
   9#ifndef _ASM_SIGINFO_H
  10#define _ASM_SIGINFO_H
  11
  12
  13#define __ARCH_SIGEV_PREAMBLE_SIZE (sizeof(long) + 2*sizeof(int))
  14#undef __ARCH_SI_TRAPNO /* exception code needs to fill this ...  */
  15
  16#define HAVE_ARCH_SIGINFO_T
  17
  18/*
  19 * We duplicate the generic versions - <asm-generic/siginfo.h> is just borked
  20 * by design ...
  21 */
  22#define HAVE_ARCH_COPY_SIGINFO
  23struct siginfo;
  24
  25/*
  26 * Careful to keep union _sifields from shifting ...
  27 */
  28#ifdef CONFIG_32BIT
  29#define __ARCH_SI_PREAMBLE_SIZE (3 * sizeof(int))
  30#endif
  31#ifdef CONFIG_64BIT
  32#define __ARCH_SI_PREAMBLE_SIZE (4 * sizeof(int))
  33#endif
  34
  35#include <asm-generic/siginfo.h>
  36
  37typedef struct siginfo {
  38        int si_signo;
  39        int si_code;
  40        int si_errno;
  41        int __pad0[SI_MAX_SIZE / sizeof(int) - SI_PAD_SIZE - 3];
  42
  43        union {
  44                int _pad[SI_PAD_SIZE];
  45
  46                /* kill() */
  47                struct {
  48                        pid_t _pid;             /* sender's pid */
  49                        __ARCH_SI_UID_T _uid;   /* sender's uid */
  50                } _kill;
  51
  52                /* POSIX.1b timers */
  53                struct {
  54                        timer_t _tid;           /* timer id */
  55                        int _overrun;           /* overrun count */
  56                        char _pad[sizeof( __ARCH_SI_UID_T) - sizeof(int)];
  57                        sigval_t _sigval;       /* same as below */
  58                        int _sys_private;       /* not to be passed to user */
  59                } _timer;
  60
  61                /* POSIX.1b signals */
  62                struct {
  63                        pid_t _pid;             /* sender's pid */
  64                        __ARCH_SI_UID_T _uid;   /* sender's uid */
  65                        sigval_t _sigval;
  66                } _rt;
  67
  68                /* SIGCHLD */
  69                struct {
  70                        pid_t _pid;             /* which child */
  71                        __ARCH_SI_UID_T _uid;   /* sender's uid */
  72                        int _status;            /* exit code */
  73                        clock_t _utime;
  74                        clock_t _stime;
  75                } _sigchld;
  76
  77                /* IRIX SIGCHLD */
  78                struct {
  79                        pid_t _pid;             /* which child */
  80                        clock_t _utime;
  81                        int _status;            /* exit code */
  82                        clock_t _stime;
  83                } _irix_sigchld;
  84
  85                /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
  86                struct {
  87                        void __user *_addr; /* faulting insn/memory ref. */
  88#ifdef __ARCH_SI_TRAPNO
  89                        int _trapno;    /* TRAP # which caused the signal */
  90#endif
  91                        short _addr_lsb;
  92                } _sigfault;
  93
  94                /* SIGPOLL, SIGXFSZ (To do ...)  */
  95                struct {
  96                        __ARCH_SI_BAND_T _band; /* POLL_IN, POLL_OUT, POLL_MSG */
  97                        int _fd;
  98                } _sigpoll;
  99        } _sifields;
 100} siginfo_t;
 101
 102/*
 103 * si_code values
 104 * Again these have been choosen to be IRIX compatible.
 105 */
 106#undef SI_ASYNCIO
 107#undef SI_TIMER
 108#undef SI_MESGQ
 109#define SI_ASYNCIO      -2      /* sent by AIO completion */
 110#define SI_TIMER __SI_CODE(__SI_TIMER, -3) /* sent by timer expiration */
 111#define SI_MESGQ __SI_CODE(__SI_MESGQ, -4) /* sent by real time mesq state change */
 112
 113#ifdef __KERNEL__
 114
 115/*
 116 * Duplicated here because of <asm-generic/siginfo.h> braindamage ...
 117 */
 118#include <linux/string.h>
 119
 120static inline void copy_siginfo(struct siginfo *to, struct siginfo *from)
 121{
 122        if (from->si_code < 0)
 123                memcpy(to, from, sizeof(*to));
 124        else
 125                /* _sigchld is currently the largest know union member */
 126                memcpy(to, from, 3*sizeof(int) + sizeof(from->_sifields._sigchld));
 127}
 128
 129#endif
 130
 131#endif /* _ASM_SIGINFO_H */
 132