1 /* siginfo_t, sigevent and constants. Linux version.
2 Copyright (C) 1997-2002, 2003 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 02111-1307 USA. */
19
20 #if !defined _SIGNAL_H && !defined __need_siginfo_t \
21 && !defined __need_sigevent_t
22 # error "Never include this file directly. Use <signal.h> instead"
23 #endif
24
25 #include <bits/wordsize.h>
26
27 #if (!defined __have_sigval_t \
28 && (defined _SIGNAL_H || defined __need_siginfo_t \
29 || defined __need_sigevent_t))
30 # define __have_sigval_t 1
31
32 /* Type for data associated with a signal. */
33 typedef union sigval
34 {
35 int sival_int;
36 void *sival_ptr;
37 } sigval_t;
38 #endif
39
40 #if (!defined __have_siginfo_t \
41 && (defined _SIGNAL_H || defined __need_siginfo_t))
42 # define __have_siginfo_t 1
43
44 # define __SI_MAX_SIZE 128
45 # if __WORDSIZE == 64
46 # define __SI_PAD_SIZE ((__SI_MAX_SIZE / sizeof (int)) - 4)
47 # else
48 # define __SI_PAD_SIZE ((__SI_MAX_SIZE / sizeof (int)) - 3)
49 # endif
50
51 typedef struct siginfo
52 {
53 int si_signo; /* Signal number. */
54 int si_errno; /* If non-zero, an errno value associated with
55 this signal, as defined in <errno.h>. */
56 int si_code; /* Signal code. */
57
58 union
59 {
60 int _pad[__SI_PAD_SIZE];
61
62 /* kill(). */
63 struct
64 {
65 __pid_t si_pid; /* Sending process ID. */
66 __uid_t si_uid; /* Real user ID of sending process. */
67 } _kill;
68
69 /* POSIX.1b timers. */
70 struct
71 {
72 int si_tid; /* Timer ID. */
73 int si_overrun; /* Overrun count. */
74 sigval_t si_sigval; /* Signal value. */
75 } _timer;
76
77 /* POSIX.1b signals. */
78 struct
79 {
80 __pid_t si_pid; /* Sending process ID. */
81 __uid_t si_uid; /* Real user ID of sending process. */
82 sigval_t si_sigval; /* Signal value. */
83 } _rt;
84
85 /* SIGCHLD. */
86 struct
87 {
88 __pid_t si_pid; /* Which child. */
89 __uid_t si_uid; /* Real user ID of sending process. */
90 int si_status; /* Exit value or signal. */
91 __clock_t si_utime;
92 __clock_t si_stime;
93 } _sigchld;
94
95 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS. */
96 struct
97 {
98 void *si_addr; /* Faulting insn/memory ref. */
99 } _sigfault;
100
101 /* SIGPOLL. */
102 struct
103 {
104 long int si_band; /* Band event for SIGPOLL. */
105 int si_fd;
106 } _sigpoll;
107 } _sifields;
108 } siginfo_t;
109
110
111 /* X/Open requires some more fields with fixed names. */
112 # define si_pid _sifields._kill.si_pid
113 # define si_uid _sifields._kill.si_uid
114 # define si_timerid _sifields._timer.si_tid
115 # define si_overrun _sifields._timer.si_overrun
116 # define si_status _sifields._sigchld.si_status
117 # define si_utime _sifields._sigchld.si_utime
118 # define si_stime _sifields._sigchld.si_stime
119 # define si_value _sifields._rt.si_sigval
120 # define si_int _sifields._rt.si_sigval.sival_int
121 # define si_ptr _sifields._rt.si_sigval.sival_ptr
122 # define si_addr _sifields._sigfault.si_addr
123 # define si_band _sifields._sigpoll.si_band
124 # define si_fd _sifields._sigpoll.si_fd
125
126
127 /* Values for `si_code'. Positive values are reserved for kernel-generated
128 signals. */
129 enum
130 {
131 SI_ASYNCNL = -60, /* Sent by asynch name lookup completion. */
132 # define SI_ASYNCNL SI_ASYNCNL
133 SI_TKILL = -6, /* Sent by tkill. */
134 # define SI_TKILL SI_TKILL
135 SI_SIGIO, /* Sent by queued SIGIO. */
136 # define SI_SIGIO SI_SIGIO
137 SI_ASYNCIO, /* Sent by AIO completion. */
138 # define SI_ASYNCIO SI_ASYNCIO
139 SI_MESGQ, /* Sent by real time mesq state change. */
140 # define SI_MESGQ SI_MESGQ
141 SI_TIMER, /* Sent by timer expiration. */
142 # define SI_TIMER SI_TIMER
143 SI_QUEUE, /* Sent by sigqueue. */
144 # define SI_QUEUE SI_QUEUE
145 SI_USER, /* Sent by kill, sigsend, raise. */
146 # define SI_USER SI_USER
147 SI_KERNEL = 0x80 /* Send by kernel. */
148 #define SI_KERNEL SI_KERNEL
149 };
150
151
152 /* `si_code' values for SIGILL signal. */
153 enum
154 {
155 ILL_ILLOPC = 1, /* Illegal opcode. */
156 # define ILL_ILLOPC ILL_ILLOPC
157 ILL_ILLOPN, /* Illegal operand. */
158 # define ILL_ILLOPN ILL_ILLOPN
159 ILL_ILLADR, /* Illegal addressing mode. */
160 # define ILL_ILLADR ILL_ILLADR
161 ILL_ILLTRP, /* Illegal trap. */
162 # define ILL_ILLTRP ILL_ILLTRP
163 ILL_PRVOPC, /* Privileged opcode. */
164 # define ILL_PRVOPC ILL_PRVOPC
165 ILL_PRVREG, /* Privileged register. */
166 # define ILL_PRVREG ILL_PRVREG
167 ILL_COPROC, /* Coprocessor error. */
168 # define ILL_COPROC ILL_COPROC
169 ILL_BADSTK /* Internal stack error. */
170 # define ILL_BADSTK ILL_BADSTK
171 };
172
173 /* `si_code' values for SIGFPE signal. */
174 enum
175 {
176 FPE_INTDIV = 1, /* Integer divide by zero. */
177 # define FPE_INTDIV FPE_INTDIV
178 FPE_INTOVF, /* Integer overflow. */
179 # define FPE_INTOVF FPE_INTOVF
180 FPE_FLTDIV, /* Floating point divide by zero. */
181 # define FPE_FLTDIV FPE_FLTDIV
182 FPE_FLTOVF, /* Floating point overflow. */
183 # define FPE_FLTOVF FPE_FLTOVF
184 FPE_FLTUND, /* Floating point underflow. */
185 # define FPE_FLTUND FPE_FLTUND
186 FPE_FLTRES, /* Floating point inexact result. */
187 # define FPE_FLTRES FPE_FLTRES
188 FPE_FLTINV, /* Floating point invalid operation. */
189 # define FPE_FLTINV FPE_FLTINV
190 FPE_FLTSUB /* Subscript out of range. */
191 # define FPE_FLTSUB FPE_FLTSUB
192 };
193
194 /* `si_code' values for SIGSEGV signal. */
195 enum
196 {
197 SEGV_MAPERR = 1, /* Address not mapped to object. */
198 # define SEGV_MAPERR SEGV_MAPERR
199 SEGV_ACCERR /* Invalid permissions for mapped object. */
200 # define SEGV_ACCERR SEGV_ACCERR
201 };
202
203 /* `si_code' values for SIGBUS signal. */
204 enum
205 {
206 BUS_ADRALN = 1, /* Invalid address alignment. */
207 # define BUS_ADRALN BUS_ADRALN
208 BUS_ADRERR, /* Non-existant physical address. */
209 # define BUS_ADRERR BUS_ADRERR
210 BUS_OBJERR /* Object specific hardware error. */
211 # define BUS_OBJERR BUS_OBJERR
212 };
213
214 /* `si_code' values for SIGTRAP signal. */
215 enum
216 {
217 TRAP_BRKPT = 1, /* Process breakpoint. */
218 # define TRAP_BRKPT TRAP_BRKPT
219 TRAP_TRACE /* Process trace trap. */
220 # define TRAP_TRACE TRAP_TRACE
221 };
222
223 /* `si_code' values for SIGCHLD signal. */
224 enum
225 {
226 CLD_EXITED = 1, /* Child has exited. */
227 # define CLD_EXITED CLD_EXITED
228 CLD_KILLED, /* Child was killed. */
229 # define CLD_KILLED CLD_KILLED
230 CLD_DUMPED, /* Child terminated abnormally. */
231 # define CLD_DUMPED CLD_DUMPED
232 CLD_TRAPPED, /* Traced child has trapped. */
233 # define CLD_TRAPPED CLD_TRAPPED
234 CLD_STOPPED, /* Child has stopped. */
235 # define CLD_STOPPED CLD_STOPPED
236 CLD_CONTINUED /* Stopped child has continued. */
237 # define CLD_CONTINUED CLD_CONTINUED
238 };
239
240 /* `si_code' values for SIGPOLL signal. */
241 enum
242 {
243 POLL_IN = 1, /* Data input available. */
244 # define POLL_IN POLL_IN
245 POLL_OUT, /* Output buffers available. */
246 # define POLL_OUT POLL_OUT
247 POLL_MSG, /* Input message available. */
248 # define POLL_MSG POLL_MSG
249 POLL_ERR, /* I/O error. */
250 # define POLL_ERR POLL_ERR
251 POLL_PRI, /* High priority input available. */
252 # define POLL_PRI POLL_PRI
253 POLL_HUP /* Device disconnected. */
254 # define POLL_HUP POLL_HUP
255 };
256
257 # undef __need_siginfo_t
258 #endif /* !have siginfo_t && (have _SIGNAL_H || need siginfo_t). */
259
260
261 #if (defined _SIGNAL_H || defined __need_sigevent_t) \
262 && !defined __have_sigevent_t
263 # define __have_sigevent_t 1
264
265 /* Structure to transport application-defined values with signals. */
266 # define __SIGEV_MAX_SIZE 64
267 # if __WORDSIZE == 64
268 # define __SIGEV_PAD_SIZE ((__SIGEV_MAX_SIZE / sizeof (int)) - 4)
269 # else
270 # define __SIGEV_PAD_SIZE ((__SIGEV_MAX_SIZE / sizeof (int)) - 3)
271 # endif
272
273 typedef struct sigevent
274 {
275 sigval_t sigev_value;
276 int sigev_signo;
277 int sigev_notify;
278
279 union
280 {
281 int _pad[__SIGEV_PAD_SIZE];
282
283 /* When SIGEV_SIGNAL and SIGEV_THREAD_ID set, LWP ID of the
284 thread to receive the signal. */
285 __pid_t _tid;
286
287 struct
288 {
289 void (*_function) (sigval_t); /* Function to start. */
290 void *_attribute; /* Really pthread_attr_t. */
291 } _sigev_thread;
292 } _sigev_un;
293 } sigevent_t;
294
295 /* POSIX names to access some of the members. */
296 # define sigev_notify_function _sigev_un._sigev_thread._function
297 # define sigev_notify_attributes _sigev_un._sigev_thread._attribute
298
299 /* `sigev_notify' values. */
300 enum
301 {
302 SIGEV_SIGNAL = 0, /* Notify via signal. */
303 # define SIGEV_SIGNAL SIGEV_SIGNAL
304 SIGEV_NONE, /* Other notification: meaningless. */
305 # define SIGEV_NONE SIGEV_NONE
306 SIGEV_THREAD, /* Deliver via thread creation. */
307 # define SIGEV_THREAD SIGEV_THREAD
308
309 SIGEV_THREAD_ID = 4 /* Send signal to specific thread. */
310 #define SIGEV_THREAD_ID SIGEV_THREAD_ID
311 };
312
313 #endif /* have _SIGNAL_H. */
314