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