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 __ARCH_SIGEV_PREAMBLE_SIZE (sizeof(long) + 2*sizeof(int))
  15 #undef __ARCH_SI_TRAPNO /* exception code needs to fill this ...  */
  16
  17 #define HAVE_ARCH_SIGINFO_T
  18
  19 /*
  20  * We duplicate the generic versions - <asm-generic/siginfo.h> is just borked
  21  * by design ...
  22  */
  23 #define HAVE_ARCH_COPY_SIGINFO
  24 struct siginfo;
  25
  26 /*
  27  * Careful to keep union _sifields from shifting ...
  28  */
  29 #ifdef CONFIG_32BIT
  30 #define __ARCH_SI_PREAMBLE_SIZE (3 * sizeof(int))
  31 #endif
  32 #ifdef CONFIG_64BIT
  33 #define __ARCH_SI_PREAMBLE_SIZE (4 * sizeof(int))
  34 #endif
  35
  36 #include <asm-generic/siginfo.h>
  37
  38 typedef struct siginfo {
  39         int si_signo;
  40         int si_code;
  41         int si_errno;
  42         int __pad0[SI_MAX_SIZE / sizeof(int) - SI_PAD_SIZE - 3];
  43
  44         union {
  45                 int _pad[SI_PAD_SIZE];
  46
  47                 /* kill() */
  48                 struct {
  49                         pid_t _pid;             /* sender's pid */
  50                         __ARCH_SI_UID_T _uid;   /* sender's uid */
  51                 } _kill;
  52
  53                 /* POSIX.1b timers */
  54                 struct {
  55                         timer_t _tid;           /* timer id */
  56                         int _overrun;           /* overrun count */
  57                         char _pad[sizeof( __ARCH_SI_UID_T) - sizeof(int)];
  58                         sigval_t _sigval;       /* same as below */
  59                         int _sys_private;       /* not to be passed to user */
  60                 } _timer;
  61
  62                 /* POSIX.1b signals */
  63                 struct {
  64                         pid_t _pid;             /* sender's pid */
  65                         __ARCH_SI_UID_T _uid;   /* sender's uid */
  66                         sigval_t _sigval;
  67                 } _rt;
  68
  69                 /* SIGCHLD */
  70                 struct {
  71                         pid_t _pid;             /* which child */
  72                         __ARCH_SI_UID_T _uid;   /* sender's uid */
  73                         int _status;            /* exit code */
  74                         clock_t _utime;
  75                         clock_t _stime;
  76                 } _sigchld;
  77
  78                 /* IRIX SIGCHLD */
  79                 struct {
  80                         pid_t _pid;             /* which child */
  81                         clock_t _utime;
  82                         int _status;            /* exit code */
  83                         clock_t _stime;
  84                 } _irix_sigchld;
  85
  86                 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
  87                 struct {
  88                         void __user *_addr; /* faulting insn/memory ref. */
  89 #ifdef __ARCH_SI_TRAPNO
  90                         int _trapno;    /* TRAP # which caused the signal */
  91 #endif
  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
 120 static 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 */