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