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 1.34 2019/09/30 21:13:33 kamil 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>
   36 #include <sys/featuretest.h>
   37 #ifdef _KERNEL
   38 #include <sys/queue.h>
   39 #endif
   40 
   41 typedef union sigval {
   42         int     sival_int;
   43         void    *sival_ptr;
   44 } sigval_t;
   45 
   46 struct _ksiginfo {
   47         int     _signo;
   48         int     _code;
   49         int     _errno;
   50 #ifdef _LP64
   51         /* In _LP64 the union starts on an 8-byte boundary. */
   52         int     _pad;
   53 #endif
   54         union {
   55                 struct {
   56                         pid_t   _pid;
   57                         uid_t   _uid;
   58                         sigval_t        _value;
   59                 } _rt;
   60 
   61                 struct {
   62                         pid_t   _pid;
   63                         uid_t   _uid;
   64                         int     _status;
   65                         clock_t _utime;
   66                         clock_t _stime;
   67                 } _child;
   68 
   69                 struct {
   70                         void   *_addr;
   71                         int     _trap;
   72                         int     _trap2;
   73                         int     _trap3;
   74                 } _fault;
   75 
   76                 struct {
   77                         long    _band;
   78                         int     _fd;
   79                 } _poll;
   80 
   81                 struct {
   82                         int     _sysnum;
   83                         int     _retval[2];
   84                         int     _error;
   85                         uint64_t _args[8]; /* SYS_MAXSYSARGS */
   86                 } _syscall;
   87 
   88                 struct {
   89                         int     _pe_report_event;
   90                         union {
   91                                 pid_t _pe_other_pid;
   92                                 lwpid_t _pe_lwp;
   93                         } _option;
   94                 } _ptrace_state;
   95         } _reason;
   96 };
   97 
   98 #ifdef _KERNEL
   99 typedef struct ksiginfo {
  100         u_long                  ksi_flags;      /* 4 or 8 bytes (LP64) */
  101         TAILQ_ENTRY(ksiginfo)   ksi_list;
  102         struct _ksiginfo        ksi_info;
  103         lwpid_t                 ksi_lid;        /* 0, or directed to LWP */
  104 } ksiginfo_t;
  105 
  106 #define KSI_TRAP        0x01    /* signal caused by trap */
  107 #define KSI_EMPTY       0x02    /* no additional information */
  108 #define KSI_QUEUED      0x04    /* on a sigpend_t queue */
  109 #define KSI_FROMPOOL    0x08    /* allocated from the ksiginfo pool */
  110 
  111 /* Macros to initialize a ksiginfo_t. */
  112 #define KSI_INIT(ksi)                                                   \
  113 do {                                                                    \
  114         memset((ksi), 0, sizeof(*(ksi)));                               \
  115 } while (/*CONSTCOND*/0)
  116 
  117 #define KSI_INIT_EMPTY(ksi)                                             \
  118 do {                                                                    \
  119         KSI_INIT((ksi));                                                \
  120         (ksi)->ksi_flags = KSI_EMPTY;                                   \
  121 } while (/*CONSTCOND*/0)
  122 
  123 #define KSI_INIT_TRAP(ksi)                                              \
  124 do {                                                                    \
  125         KSI_INIT((ksi));                                                \
  126         (ksi)->ksi_flags = KSI_TRAP;                                    \
  127 } while (/*CONSTCOND*/0)
  128 
  129 /* Copy the part of ksiginfo_t without the queue pointers */
  130 #define KSI_COPY(fksi, tksi)                                            \
  131 do {                                                                    \
  132         (tksi)->ksi_info = (fksi)->ksi_info;                            \
  133         (tksi)->ksi_flags = (fksi)->ksi_flags;                          \
  134 } while (/*CONSTCOND*/0)
  135 
  136 
  137 /* Predicate macros to test how a ksiginfo_t was generated. */
  138 #define KSI_TRAP_P(ksi)         (((ksi)->ksi_flags & KSI_TRAP) != 0)
  139 #define KSI_EMPTY_P(ksi)        (((ksi)->ksi_flags & KSI_EMPTY) != 0)
  140 
  141 /*
  142  * Old-style signal handler "code" arguments were only non-zero for
  143  * signals caused by traps.
  144  */
  145 #define KSI_TRAPCODE(ksi)       (KSI_TRAP_P(ksi) ? (ksi)->ksi_trap : 0)
  146 #endif /* _KERNEL */
  147 
  148 typedef union siginfo {
  149         char    si_pad[128];    /* Total size; for future expansion */
  150         struct _ksiginfo _info;
  151 } siginfo_t;
  152 
  153 /** Field access macros */
  154 #define si_signo        _info._signo
  155 #define si_code         _info._code
  156 #define si_errno        _info._errno
  157 
  158 #define si_value        _info._reason._rt._value
  159 #define si_pid          _info._reason._child._pid
  160 #define si_uid          _info._reason._child._uid
  161 #define si_status       _info._reason._child._status
  162 #define si_utime        _info._reason._child._utime
  163 #define si_stime        _info._reason._child._stime
  164 
  165 #define si_addr         _info._reason._fault._addr
  166 #define si_trap         _info._reason._fault._trap
  167 #define si_trap2        _info._reason._fault._trap2
  168 #define si_trap3        _info._reason._fault._trap3
  169 
  170 #define si_band         _info._reason._poll._band
  171 #define si_fd           _info._reason._poll._fd
  172 
  173 #define si_sysnum       _info._reason._syscall._sysnum
  174 #define si_retval       _info._reason._syscall._retval
  175 #define si_error        _info._reason._syscall._error
  176 #define si_args         _info._reason._syscall._args
  177 
  178 #define si_pe_report_event      _info._reason._ptrace_state._pe_report_event
  179 #define si_pe_other_pid _info._reason._ptrace_state._option._pe_other_pid
  180 #define si_pe_lwp       _info._reason._ptrace_state._option._pe_lwp
  181 
  182 #ifdef _KERNEL
  183 /** Field access macros */
  184 #define ksi_signo       ksi_info._signo
  185 #define ksi_code        ksi_info._code
  186 #define ksi_errno       ksi_info._errno
  187 
  188 #define ksi_value       ksi_info._reason._rt._value
  189 #define ksi_pid         ksi_info._reason._child._pid
  190 #define ksi_uid         ksi_info._reason._child._uid
  191 #define ksi_status      ksi_info._reason._child._status
  192 #define ksi_utime       ksi_info._reason._child._utime
  193 #define ksi_stime       ksi_info._reason._child._stime
  194 
  195 #define ksi_addr        ksi_info._reason._fault._addr
  196 #define ksi_trap        ksi_info._reason._fault._trap
  197 #define ksi_trap2       ksi_info._reason._fault._trap2
  198 #define ksi_trap3       ksi_info._reason._fault._trap3
  199 
  200 #define ksi_band        ksi_info._reason._poll._band
  201 #define ksi_fd          ksi_info._reason._poll._fd
  202 
  203 #define ksi_sysnum      ksi_info._reason._syscall._sysnum
  204 #define ksi_retval      ksi_info._reason._syscall._retval
  205 #define ksi_error       ksi_info._reason._syscall._error
  206 #define ksi_args        ksi_info._reason._syscall._args
  207 
  208 #define ksi_pe_report_event     ksi_info._reason._ptrace_state._pe_report_event
  209 #define ksi_pe_other_pid        ksi_info._reason._ptrace_state._option._pe_other_pid
  210 #define ksi_pe_lwp              ksi_info._reason._ptrace_state._option._pe_lwp
  211 #endif /* _KERNEL */
  212 
  213 /** si_code */
  214 /* SIGILL */
  215 #define ILL_ILLOPC      1       /* Illegal opcode                       */
  216 #define ILL_ILLOPN      2       /* Illegal operand                      */
  217 #define ILL_ILLADR      3       /* Illegal addressing mode              */
  218 #define ILL_ILLTRP      4       /* Illegal trap                         */
  219 #define ILL_PRVOPC      5       /* Privileged opcode                    */
  220 #define ILL_PRVREG      6       /* Privileged register                  */
  221 #define ILL_COPROC      7       /* Coprocessor error                    */
  222 #define ILL_BADSTK      8       /* Internal stack error                 */
  223 
  224 /* SIGFPE */
  225 #define FPE_INTDIV      1       /* Integer divide by zero               */
  226 #define FPE_INTOVF      2       /* Integer overflow                     */
  227 #define FPE_FLTDIV      3       /* Floating point divide by zero        */
  228 #define FPE_FLTOVF      4       /* Floating point overflow              */
  229 #define FPE_FLTUND      5       /* Floating point underflow             */
  230 #define FPE_FLTRES      6       /* Floating point inexact result        */
  231 #define FPE_FLTINV      7       /* Invalid Floating point operation     */
  232 #define FPE_FLTSUB      8       /* Subscript out of range               */
  233 
  234 /* SIGSEGV */
  235 #define SEGV_MAPERR     1       /* Address not mapped to object         */
  236 #define SEGV_ACCERR     2       /* Invalid permissions for mapped object*/
  237 
  238 /* SIGBUS */
  239 #define BUS_ADRALN      1       /* Invalid address alignment            */
  240 #define BUS_ADRERR      2       /* Non-existent physical address        */
  241 #define BUS_OBJERR      3       /* Object specific hardware error       */
  242 
  243 /* SIGTRAP */
  244 #define TRAP_BRKPT      1       /* Process breakpoint                   */
  245 #define TRAP_TRACE      2       /* Process trace trap                   */
  246 #define TRAP_EXEC       3       /* Process exec trap                    */
  247 #define TRAP_CHLD       4       /* Process child trap                   */
  248 #define TRAP_LWP        5       /* Process lwp trap                     */
  249 #define TRAP_DBREG      6       /* Process hardware debug register trap */
  250 #define TRAP_SCE        7       /* Process syscall entry trap           */
  251 #define TRAP_SCX        8       /* Process syscall exit trap            */
  252 
  253 /* SIGCHLD */
  254 #define CLD_EXITED      1       /* Child has exited                     */
  255 #define CLD_KILLED      2       /* Child has terminated abnormally but  */
  256                                 /* did not create a core file           */
  257 #define CLD_DUMPED      3       /* Child has terminated abnormally and  */
  258                                 /* created a core file                  */
  259 #define CLD_TRAPPED     4       /* Traced child has trapped             */
  260 #define CLD_STOPPED     5       /* Child has stopped                    */
  261 #define CLD_CONTINUED   6       /* Stopped child has continued          */
  262 
  263 /* SIGIO */
  264 #define POLL_IN         1       /* Data input available                 */
  265 #define POLL_OUT        2       /* Output buffers available             */
  266 #define POLL_MSG        3       /* Input message available              */
  267 #define POLL_ERR        4       /* I/O Error                            */
  268 #define POLL_PRI        5       /* High priority input available        */
  269 #define POLL_HUP        6       /* Device disconnected                  */
  270 
  271 
  272 /** si_code */
  273 #define SI_USER         0       /* Sent by kill(2)                      */
  274 #define SI_QUEUE        -1      /* Sent by the sigqueue(2)              */
  275 #define SI_TIMER        -2      /* Generated by expiration of a timer   */
  276                                 /* set by timer_settime(2)              */
  277 #define SI_ASYNCIO      -3      /* Generated by completion of an        */
  278                                 /* asynchronous I/O signal              */
  279 #define SI_MESGQ        -4      /* Generated by arrival of a message on */
  280                                 /* an empty message queue               */
  281 #if defined(_KERNEL) || defined(_NETBSD_SOURCE)
  282 #define SI_LWP          -5      /* Generated by _lwp_kill(2)            */
  283 #define SI_NOINFO       32767   /* No signal specific info available    */
  284 #endif
  285 
  286 #endif /* !_SYS_SIGINFO_H_ */

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