The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/siginfo.h

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    1 /*      $NetBSD: siginfo.h,v 1.17.10.1 2009/04/01 22:30:55 snj Exp $     */
    2 
    3 /*-
    4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Christos Zoulas.
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   29  * POSSIBILITY OF SUCH DAMAGE.
   30  */
   31 
   32 #ifndef _SYS_SIGINFO_H_
   33 #define _SYS_SIGINFO_H_
   34 
   35 #include <machine/signal.h>     /* XXX: __HAVE_SIGINFO */
   36 #ifdef _KERNEL
   37 #include <sys/queue.h>
   38 #endif
   39 
   40 typedef union sigval {
   41         int     sival_int;
   42         void    *sival_ptr;
   43 } sigval_t;
   44 
   45 struct _ksiginfo {
   46         int     _signo;
   47         int     _code;
   48         int     _errno;
   49 #ifdef _LP64
   50         /* In _LP64 the union starts on an 8-byte boundary. */
   51         int     _pad;
   52 #endif
   53         union {
   54                 struct {
   55                         pid_t   _pid;
   56                         uid_t   _uid;
   57                         sigval_t        _value;
   58                 } _rt;
   59 
   60                 struct {
   61                         pid_t   _pid;
   62                         uid_t   _uid;
   63                         int     _status;
   64                         clock_t _utime;
   65                         clock_t _stime;
   66                 } _child;
   67 
   68                 struct {
   69                         void   *_addr;
   70                         int     _trap;
   71                 } _fault;
   72 
   73                 struct {
   74                         long    _band;
   75                         int     _fd;
   76                 } _poll;
   77         } _reason;
   78 };
   79 
   80 #ifdef _KERNEL
   81 typedef struct ksiginfo {
   82         u_long                  ksi_flags;      /* 4 or 8 bytes (LP64) */
   83         CIRCLEQ_ENTRY(ksiginfo) ksi_list;
   84         struct _ksiginfo        ksi_info;
   85         lwpid_t                 ksi_lid;        /* 0, or directed to LWP */
   86 } ksiginfo_t;
   87 
   88 #define KSI_TRAP        0x01    /* signal caused by trap */
   89 #define KSI_EMPTY       0x02    /* no additional information */
   90 #define KSI_QUEUED      0x04    /* on a sigpend_t queue */
   91 #define KSI_FROMPOOL    0x08    /* allocated from the ksiginfo pool */
   92 
   93 /* Macros to initialize a ksiginfo_t. */
   94 #define KSI_INIT(ksi)                                                   \
   95 do {                                                                    \
   96         memset((ksi), 0, sizeof(*(ksi)));                               \
   97 } while (/*CONSTCOND*/0)
   98 
   99 #define KSI_INIT_EMPTY(ksi)                                             \
  100 do {                                                                    \
  101         KSI_INIT((ksi));                                                \
  102         (ksi)->ksi_flags = KSI_EMPTY;                                   \
  103 } while (/*CONSTCOND*/0)
  104 
  105 #define KSI_INIT_TRAP(ksi)                                              \
  106 do {                                                                    \
  107         KSI_INIT((ksi));                                                \
  108         (ksi)->ksi_flags = KSI_TRAP;                                    \
  109 } while (/*CONSTCOND*/0)
  110 
  111 /* Copy the part of ksiginfo_t without the queue pointers */
  112 #define KSI_COPY(fksi, tksi)                                            \
  113 do {                                                                    \
  114         (tksi)->ksi_info = (fksi)->ksi_info;                            \
  115         (tksi)->ksi_flags = (fksi)->ksi_flags;                          \
  116 } while (/*CONSTCOND*/0)
  117 
  118 
  119 /* Predicate macros to test how a ksiginfo_t was generated. */
  120 #define KSI_TRAP_P(ksi)         (((ksi)->ksi_flags & KSI_TRAP) != 0)
  121 #define KSI_EMPTY_P(ksi)        (((ksi)->ksi_flags & KSI_EMPTY) != 0)
  122 
  123 /*
  124  * Old-style signal handler "code" arguments were only non-zero for
  125  * signals caused by traps.
  126  */
  127 #define KSI_TRAPCODE(ksi)       (KSI_TRAP_P(ksi) ? (ksi)->ksi_trap : 0)
  128 #endif /* _KERNEL */
  129 
  130 typedef union siginfo {
  131         char    si_pad[128];    /* Total size; for future expansion */
  132         struct _ksiginfo _info;
  133 } siginfo_t;
  134 
  135 /** Field access macros */
  136 #define si_signo        _info._signo
  137 #define si_code         _info._code
  138 #define si_errno        _info._errno
  139 
  140 #define si_value        _info._reason._rt._value
  141 #define si_pid          _info._reason._child._pid
  142 #define si_uid          _info._reason._child._uid
  143 #define si_status       _info._reason._child._status
  144 #define si_utime        _info._reason._child._utime
  145 #define si_stime        _info._reason._child._stime
  146 
  147 #define si_addr         _info._reason._fault._addr
  148 #define si_trap         _info._reason._fault._trap
  149 
  150 #define si_band         _info._reason._poll._band
  151 #define si_fd           _info._reason._poll._fd
  152 
  153 #ifdef _KERNEL
  154 /** Field access macros */
  155 #define ksi_signo       ksi_info._signo
  156 #define ksi_code        ksi_info._code
  157 #define ksi_errno       ksi_info._errno
  158 
  159 #define ksi_value       ksi_info._reason._rt._value
  160 #define ksi_pid         ksi_info._reason._child._pid
  161 #define ksi_uid         ksi_info._reason._child._uid
  162 #define ksi_status      ksi_info._reason._child._status
  163 #define ksi_utime       ksi_info._reason._child._utime
  164 #define ksi_stime       ksi_info._reason._child._stime
  165 
  166 #define ksi_addr        ksi_info._reason._fault._addr
  167 #define ksi_trap        ksi_info._reason._fault._trap
  168 
  169 #define ksi_band        ksi_info._reason._poll._band
  170 #define ksi_fd          ksi_info._reason._poll._fd
  171 #endif /* _KERNEL */
  172 
  173 /** si_code */
  174 /* SIGILL */
  175 #define ILL_ILLOPC      1       /* Illegal opcode                       */
  176 #define ILL_ILLOPN      2       /* Illegal operand                      */
  177 #define ILL_ILLADR      3       /* Illegal addressing mode              */
  178 #define ILL_ILLTRP      4       /* Illegal trap                         */
  179 #define ILL_PRVOPC      5       /* Privileged opcode                    */
  180 #define ILL_PRVREG      6       /* Privileged register                  */
  181 #define ILL_COPROC      7       /* Coprocessor error                    */
  182 #define ILL_BADSTK      8       /* Internal stack error                 */
  183 
  184 /* SIGFPE */
  185 #define FPE_INTDIV      1       /* Integer divide by zero               */
  186 #define FPE_INTOVF      2       /* Integer overflow                     */
  187 #define FPE_FLTDIV      3       /* Floating point divide by zero        */
  188 #define FPE_FLTOVF      4       /* Floating point overflow              */
  189 #define FPE_FLTUND      5       /* Floating point underflow             */
  190 #define FPE_FLTRES      6       /* Floating point inexact result        */
  191 #define FPE_FLTINV      7       /* Invalid Floating point operation     */
  192 #define FPE_FLTSUB      8       /* Subscript out of range               */
  193 
  194 /* SIGSEGV */
  195 #define SEGV_MAPERR     1       /* Address not mapped to object         */
  196 #define SEGV_ACCERR     2       /* Invalid permissions for mapped object*/
  197 
  198 /* SIGBUS */
  199 #define BUS_ADRALN      1       /* Invalid address alignment            */
  200 #define BUS_ADRERR      2       /* Non-existent physical address        */
  201 #define BUS_OBJERR      3       /* Object specific hardware error       */
  202 
  203 /* SIGTRAP */
  204 #define TRAP_BRKPT      1       /* Process breakpoint                   */
  205 #define TRAP_TRACE      2       /* Process trace trap                   */
  206 
  207 /* SIGCHLD */
  208 #define CLD_EXITED      1       /* Child has exited                     */
  209 #define CLD_KILLED      2       /* Child has terminated abnormally but  */
  210                                 /* did not create a core file           */
  211 #define CLD_DUMPED      3       /* Child has terminated abnormally and  */
  212                                 /* created a core file                  */
  213 #define CLD_TRAPPED     4       /* Traced child has trapped             */
  214 #define CLD_STOPPED     5       /* Child has stopped                    */
  215 #define CLD_CONTINUED   6       /* Stopped child has continued          */
  216 
  217 /* SIGPOLL */
  218 #define POLL_IN         1       /* Data input available                 */
  219 #define POLL_OUT        2       /* Output buffers available             */
  220 #define POLL_MSG        3       /* Input message available              */
  221 #define POLL_ERR        4       /* I/O Error                            */
  222 #define POLL_PRI        5       /* High priority input available        */
  223 #define POLL_HUP        6       /* Device disconnected                  */
  224 
  225 
  226 /** si_code */
  227 #define SI_NOINFO       32767   /* No signal specific info available    */
  228 #define SI_USER         0       /* Sent by kill(2)                      */
  229 #define SI_QUEUE        -1      /* Sent by the sigqueue(2)              */
  230 #define SI_TIMER        -2      /* Generated by expiration of a timer   */
  231                                 /* set by timer_settime(2)              */
  232 #define SI_ASYNCIO      -3      /* Generated by completion of an        */
  233                                 /* asynchronous I/O signal              */
  234 #define SI_MESGQ        -4      /* Generated by arrival of a message on */
  235                                 /* an empty message queue               */
  236 #define SI_LWP          -5      /* Generated by _lwp_kill(2)            */
  237 
  238 #endif /* !_SYS_SIGINFO_H_ */

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