1/* $NetBSD: siginfo.h,v 1.25 2013/11/22 21:04:11 christos 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
41typedef union sigval {
42 int sival_int;
43 void *sival_ptr;
44} sigval_t;
45
46struct _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 } _reason;
81};
82
83#ifdef _KERNEL
84typedef struct ksiginfo {
85 u_long ksi_flags; /* 4 or 8 bytes (LP64) */
86 TAILQ_ENTRY(ksiginfo) ksi_list;
87 struct _ksiginfo ksi_info;
88 lwpid_t ksi_lid; /* 0, or directed to LWP */
89} ksiginfo_t;
90
91#define KSI_TRAP 0x01 /* signal caused by trap */
92#define KSI_EMPTY 0x02 /* no additional information */
93#define KSI_QUEUED 0x04 /* on a sigpend_t queue */
94#define KSI_FROMPOOL 0x08 /* allocated from the ksiginfo pool */
95
96/* Macros to initialize a ksiginfo_t. */
97#define KSI_INIT(ksi) \
98do { \
99 memset((ksi), 0, sizeof(*(ksi))); \
100} while (/*CONSTCOND*/0)
101
102#define KSI_INIT_EMPTY(ksi) \
103do { \
104 KSI_INIT((ksi)); \
105 (ksi)->ksi_flags = KSI_EMPTY; \
106} while (/*CONSTCOND*/0)
107
108#define KSI_INIT_TRAP(ksi) \
109do { \
110 KSI_INIT((ksi)); \
111 (ksi)->ksi_flags = KSI_TRAP; \
112} while (/*CONSTCOND*/0)
113
114/* Copy the part of ksiginfo_t without the queue pointers */
115#define KSI_COPY(fksi, tksi) \
116do { \
117 (tksi)->ksi_info = (fksi)->ksi_info; \
118 (tksi)->ksi_flags = (fksi)->ksi_flags; \
119} while (/*CONSTCOND*/0)
120
121
122/* Predicate macros to test how a ksiginfo_t was generated. */
123#define KSI_TRAP_P(ksi) (((ksi)->ksi_flags & KSI_TRAP) != 0)
124#define KSI_EMPTY_P(ksi) (((ksi)->ksi_flags & KSI_EMPTY) != 0)
125
126/*
127 * Old-style signal handler "code" arguments were only non-zero for
128 * signals caused by traps.
129 */
130#define KSI_TRAPCODE(ksi) (KSI_TRAP_P(ksi) ? (ksi)->ksi_trap : 0)
131#endif /* _KERNEL */
132
133typedef union siginfo {
134 char si_pad[128]; /* Total size; for future expansion */
135 struct _ksiginfo _info;
136} siginfo_t;
137
138/** Field access macros */
139#define si_signo _info._signo
140#define si_code _info._code
141#define si_errno _info._errno
142
143#define si_value _info._reason._rt._value
144#define si_pid _info._reason._child._pid
145#define si_uid _info._reason._child._uid
146#define si_status _info._reason._child._status
147#define si_utime _info._reason._child._utime
148#define si_stime _info._reason._child._stime
149
150#define si_addr _info._reason._fault._addr
151#define si_trap _info._reason._fault._trap
152#define si_trap2 _info._reason._fault._trap2
153#define si_trap3 _info._reason._fault._trap3
154
155#define si_band _info._reason._poll._band
156#define si_fd _info._reason._poll._fd
157
158#ifdef _KERNEL
159/** Field access macros */
160#define ksi_signo ksi_info._signo
161#define ksi_code ksi_info._code
162#define ksi_errno ksi_info._errno
163
164#define ksi_value ksi_info._reason._rt._value
165#define ksi_pid ksi_info._reason._child._pid
166#define ksi_uid ksi_info._reason._child._uid
167#define ksi_status ksi_info._reason._child._status
168#define ksi_utime ksi_info._reason._child._utime
169#define ksi_stime ksi_info._reason._child._stime
170
171#define ksi_addr ksi_info._reason._fault._addr
172#define ksi_trap ksi_info._reason._fault._trap
173#define ksi_trap2 ksi_info._reason._fault._trap2
174#define ksi_trap3 ksi_info._reason._fault._trap3
175
176#define ksi_band ksi_info._reason._poll._band
177#define ksi_fd ksi_info._reason._poll._fd
178#endif /* _KERNEL */
179
180/** si_code */
181/* SIGILL */
182#define ILL_ILLOPC 1 /* Illegal opcode */
183#define ILL_ILLOPN 2 /* Illegal operand */
184#define ILL_ILLADR 3 /* Illegal addressing mode */
185#define ILL_ILLTRP 4 /* Illegal trap */
186#define ILL_PRVOPC 5 /* Privileged opcode */
187#define ILL_PRVREG 6 /* Privileged register */
188#define ILL_COPROC 7 /* Coprocessor error */
189#define ILL_BADSTK 8 /* Internal stack error */
190
191/* SIGFPE */
192#define FPE_INTDIV 1 /* Integer divide by zero */
193#define FPE_INTOVF 2 /* Integer overflow */
194#define FPE_FLTDIV 3 /* Floating point divide by zero */
195#define FPE_FLTOVF 4 /* Floating point overflow */
196#define FPE_FLTUND 5 /* Floating point underflow */
197#define FPE_FLTRES 6 /* Floating point inexact result */
198#define FPE_FLTINV 7 /* Invalid Floating point operation */
199#define FPE_FLTSUB 8 /* Subscript out of range */
200
201/* SIGSEGV */
202#define SEGV_MAPERR 1 /* Address not mapped to object */
203#define SEGV_ACCERR 2 /* Invalid permissions for mapped object*/
204
205/* SIGBUS */
206#define BUS_ADRALN 1 /* Invalid address alignment */
207#define BUS_ADRERR 2 /* Non-existent physical address */
208#define BUS_OBJERR 3 /* Object specific hardware error */
209
210/* SIGTRAP */
211#define TRAP_BRKPT 1 /* Process breakpoint */
212#define TRAP_TRACE 2 /* Process trace trap */
213
214/* SIGCHLD */
215#define CLD_EXITED 1 /* Child has exited */
216#define CLD_KILLED 2 /* Child has terminated abnormally but */
217 /* did not create a core file */
218#define CLD_DUMPED 3 /* Child has terminated abnormally and */
219 /* created a core file */
220#define CLD_TRAPPED 4 /* Traced child has trapped */
221#define CLD_STOPPED 5 /* Child has stopped */
222#define CLD_CONTINUED 6 /* Stopped child has continued */
223
224/* SIGPOLL */
225#define POLL_IN 1 /* Data input available */
226#define POLL_OUT 2 /* Output buffers available */
227#define POLL_MSG 3 /* Input message available */
228#define POLL_ERR 4 /* I/O Error */
229#define POLL_PRI 5 /* High priority input available */
230#define POLL_HUP 6 /* Device disconnected */
231
232
233/** si_code */
234#define SI_USER 0 /* Sent by kill(2) */
235#define SI_QUEUE -1 /* Sent by the sigqueue(2) */
236#define SI_TIMER -2 /* Generated by expiration of a timer */
237 /* set by timer_settime(2) */
238#define SI_ASYNCIO -3 /* Generated by completion of an */
239 /* asynchronous I/O signal */
240#define SI_MESGQ -4 /* Generated by arrival of a message on */
241 /* an empty message queue */
242#if defined(_KERNEL) || defined(_NETBSD_SOURCE)
243#define SI_LWP -5 /* Generated by _lwp_kill(2) */
244#define SI_NOINFO 32767 /* No signal specific info available */
245#endif
246
247#endif /* !_SYS_SIGINFO_H_ */
248