include/asm-mips/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 #include <linux/config.h>
  13
  14 #define SIGEV_HEAD_SIZE (sizeof(long) + 2*sizeof(int))
  15 #define SIGEV_PAD_SIZE  ((SIGEV_MAX_SIZE-SIGEV_HEAD_SIZE) / sizeof(int))
  16 #undef __ARCH_SI_TRAPNO /* exception code needs to fill this ...  */
  17
  18 #define HAVE_ARCH_SIGINFO_T
  19
  20 /*
  21  * We duplicate the generic versions - <asm-generic/siginfo.h> is just borked
  22  * by design ...
  23  */
  24 #define HAVE_ARCH_COPY_SIGINFO
  25 struct siginfo;
  26
  27 /*
  28  * Careful to keep union _sifields from shifting ...
  29  */
  30 #ifdef CONFIG_MIPS32
  31 #define __ARCH_SI_PREAMBLE_SIZE (3 * sizeof(int))
  32 #endif
  33 #ifdef CONFIG_MIPS64
  34 #define __ARCH_SI_PREAMBLE_SIZE (4 * sizeof(int))
  35 #endif
  36
  37 #include <asm-generic/siginfo.h>
  38
  39 typedef struct siginfo {
  40         int si_signo;
  41         int si_code;
  42         int si_errno;
  43         int __pad0[SI_MAX_SIZE / sizeof(int) - SI_PAD_SIZE - 3];
  44
  45         union {
  46                 int _pad[SI_PAD_SIZE];
  47
  48                 /* kill() */
  49                 struct {
  50                         pid_t _pid;             /* sender's pid */
  51                         __ARCH_SI_UID_T _uid;   /* sender's uid */
  52                 } _kill;
  53
  54                 /* POSIX.1b timers */
  55                 struct {
  56                         timer_t _tid;           /* timer id */
  57                         int _overrun;           /* overrun count */
  58                         char _pad[sizeof( __ARCH_SI_UID_T) - sizeof(int)];
  59                         sigval_t _sigval;       /* same as below */
  60                         int _sys_private;       /* not to be passed to user */
  61                 } _timer;
  62
  63                 /* POSIX.1b signals */
  64                 struct {
  65                         pid_t _pid;             /* sender's pid */
  66                         __ARCH_SI_UID_T _uid;   /* sender's uid */
  67                         sigval_t _sigval;
  68                 } _rt;
  69
  70                 /* SIGCHLD */
  71                 struct {
  72                         pid_t _pid;             /* which child */
  73                         __ARCH_SI_UID_T _uid;   /* sender's uid */
  74                         int _status;            /* exit code */
  75                         clock_t _utime;
  76                         clock_t _stime;
  77                 } _sigchld;
  78
  79                 /* IRIX SIGCHLD */
  80                 struct {
  81                         pid_t _pid;             /* which child */
  82                         clock_t _utime;
  83                         int _status;            /* exit code */
  84                         clock_t _stime;
  85                 } _irix_sigchld;
  86
  87                 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
  88                 struct {
  89                         void __user *_addr; /* faulting insn/memory ref. */
  90 #ifdef __ARCH_SI_TRAPNO
  91                         int _trapno;    /* TRAP # which caused the signal */
  92 #endif
  93                 } _sigfault;
  94
  95                 /* SIGPOLL, SIGXFSZ (To do ...)  */
  96                 struct {
  97                         __ARCH_SI_BAND_T _band; /* POLL_IN, POLL_OUT, POLL_MSG */
  98                         int _fd;
  99                 } _sigpoll;
 100         } _sifields;
 101 } siginfo_t;
 102
 103 /*
 104  * si_code values
 105  * Again these have been choosen to be IRIX compatible.
 106  */
 107 #undef SI_ASYNCIO
 108 #undef SI_TIMER
 109 #undef SI_MESGQ
 110 #define SI_ASYNCIO      -2      /* sent by AIO completion */
 111 #define SI_TIMER __SI_CODE(__SI_TIMER,-3) /* sent by timer expiration */
 112 #define SI_MESGQ __SI_CODE(__SI_MESGQ,-4) /* sent by real time mesq state change */
 113
 114 #ifdef __KERNEL__
 115
 116 /*
 117  * Duplicated here because of <asm-generic/siginfo.h> braindamage ...
 118  */
 119 #include <linux/string.h>
 120
 121 static inline void copy_siginfo(struct siginfo *to, struct siginfo *from)
 122 {
 123         if (from->si_code < 0)
 124                 memcpy(to, from, sizeof(*to));
 125         else
 126                 /* _sigchld is currently the largest know union member */
 127                 memcpy(to, from, 3*sizeof(int) + sizeof(from->_sifields._sigchld));
 128 }
 129
 130 #endif
 131
 132 #endif /* _ASM_SIGINFO_H */