aboutsummaryrefslogtreecommitdiff
path: root/sysdeps/unix/sysv/linux/bits/siginfo.h
blob: 1e423636c872793586fe0813d58074b956679a0b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
/* siginfo_t, sigevent and constants.  Linux version.
   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public License as
   published by the Free Software Foundation; either version 2 of the
   License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#if !defined _SIGNAL_H && !defined __need_siginfo_t
# error "Never include this file directly.  Use <signal.h> instead"
#endif

#if (!defined __have_siginfo_t \
     && (defined _SIGNAL_H || defined __need_siginfo_t))
# define __have_siginfo_t	1

/* Type for data associated with a signal.  */
typedef union sigval
  {
    int sival_int;
    void *sival_ptr;
  } sigval_t;

# define __SI_MAX_SIZE     128
# define __SI_PAD_SIZE     ((__SI_MAX_SIZE / sizeof (int)) - 3)

typedef struct siginfo
  {
    int si_signo;		/* Signal number.  */
    int si_errno;		/* If non-zero, an errno value associated with
				   this signal, as defined in <errno.h>.  */
    int si_code;		/* Signal code.  */

    union
      {
	int _pad[__SI_PAD_SIZE];

	 /* kill().  */
	struct
	  {
	    __pid_t si_pid;	/* Sending process ID.  */
	    __uid_t si_uid;	/* Real user ID of sending process.  */
	  } _kill;

	/* POSIX.1b timers.  */
	struct
	  {
	    unsigned int _timer1;
	    unsigned int _timer2;
	  } _timer;

	/* POSIX.1b signals.  */
	struct
	  {
	    __pid_t si_pid;	/* Sending process ID.  */
	    __uid_t si_uid;	/* Real user ID of sending process.  */
	    sigval_t si_sigval;	/* Signal value.  */
	  } _rt;

	/* SIGCHLD.  */
	struct
	  {
	    __pid_t si_pid;	/* Which child.  */
	    int si_status;	/* Exit value or signal.  */
	    __clock_t si_utime;
	    __clock_t si_stime;
	  } _sigchld;

	/* SIGILL, SIGFPE, SIGSEGV, SIGBUS.  */
	struct
	  {
	    void *si_addr;	/* Faulting insn/memory ref.  */
	  } _sigfault;

	/* SIGPOLL.  */
	struct
	  {
	    int si_band;	/* Band event for SIGPOLL.  */
	    int si_fd;
	  } _sigpoll;
      } _sifields;
  } siginfo_t;


/* X/Open requires some more fields with fixed names.  */
# define si_pid		_sifields._kill.si_pid
# define si_uid		_sifields._kill.si_uid
# define si_status	_sifields._sigchld.si_status
# define si_utime	_sifields._sigchld.si_utime
# define si_stime	_sifields._sigchld.si_stime
# define si_value	_sifields._rt.si_sigval
# define si_int		_sifields._rt.si_sigval.sival_int
# define si_ptr		_sifields._rt.si_sigval.sival_ptr
# define si_addr	_sifields._sigfault.si_addr
# define si_band	_sifields._sigpoll.si_band
# define si_fd		_sifields._sigpoll.si_fd


/* Values for `si_code'.  Positive values are reserved for kernel-generated
   signals.  */
enum
{
  SI_ASYNCIO = -4,		/* Sent by AIO completion.  */
# define SI_ASYNCIO	SI_ASYNCIO
  SI_MESGQ,			/* Sent by real time mesq state change.  */
# define SI_MESGQ	SI_MESGQ
  SI_TIMER,			/* Sent by timer expiration.  */
# define SI_TIMER	SI_TIMER
  SI_QUEUE,			/* Sent by sigqueue.  */
# define SI_QUEUE	SI_QUEUE
  SI_USER			/* Sent by kill, sigsend, raise.  */
# define SI_USER	SI_USER
};


/* `si_code' values for SIGILL signal.  */
enum
{
  ILL_ILLOPC = 1,		/* Illegal opcode.  */
# define ILL_ILLOPC	ILL_ILLOPC
  ILL_ILL_OPN,			/* Illegal operand.  */
# define ILL_ILLOPN	ILL_ILLOPN
  ILL_ILLADR,			/* Illegal addressing mode.  */
# define ILL_ILLADR	ILL_ILLADR
  ILL_ILLTRP,			/* Illegal trap. */
# define ILL_ILLTRP	ILL_ILLTRP
  ILL_PRVOPC,			/* Privileged opcode.  */
# define ILL_PRVOPC	ILL_PRVOPC
  ILL_PRVREG,			/* Privileged register.  */
# define ILL_PRVREG	ILL_PRVREG
  ILL_COPROC,			/* Coprocessor error.  */
# define ILL_COPROC	ILL_COPROC
  ILL_BADSTK			/* Internal stack error.  */
# define ILL_BADSTK	ILL_BADSTK
};

/* `si_code' values for SIGFPE signal.  */
enum
{
  FPE_INTDIV = 1,		/* Integer divide by zero.  */
# define FPE_INTDIV	FPE_INTDIV
  FPE_INTOVF,			/* Integer overflow.  */
# define FPE_INTOVF	FPE_INTOVF
  FPE_FLTDIV,			/* Floating point divide by zero.  */
# define FPE_FLTDIV	FPE_FLTDIV
  FPE_FLTOVF,			/* Floating point overflow.  */
# define FPE_FLTOVF	FPE_FLTOVF
  FPE_FLTUND,			/* Floating point underflow.  */
# define FPE_FLTUND	FPE_FLTUND
  FPE_FLTRES,			/* Floating point inexact result.  */
# define FPE_FLTRES	FPE_FLTRES
  FPE_FLTINV,			/* Floating point invalid operation.  */
# define FPE_FLTINV	FPE_FLTINV
  FPE_FLTSUB			/* Subscript out of range.  */
# define FPE_FLTSUB	FPE_FLTSUB
};

/* `si_code' values for SIGSEGV signal.  */
enum
{
  SEGV_MAPERR = 1,		/* Address not mapped to object.  */
# define SEGV_MAPERR	SEGV_MAPERR
  SEGV_ACCERR			/* Invalid permissions for mapped object.  */
# define SEGV_ACCERR	SEGV_ACCERR
};

/* `si_code' values for SIGBUS signal.  */
enum
{
  BUS_ADRALN = 1,		/* Invalid address alignment.  */
# define BUS_ADRALN	BUS_ADRALN
  BUS_ADRERR,			/* Non-existant physical address.  */
# define BUS_ADRERR	BUS_ADRERR
  BUS_OBJERR			/* Object specific hardware error.  */
# define BUS_OBJERR	BUS_OBJERR
};

/* `si_code' values for SIGTRAP signal.  */
enum
{
  TRAP_BRKPT = 1,		/* Process breakpoint.  */
# define TRAP_BRKPT	TRAP_BRKPT
  TRAP_TRACE			/* Process trace trap.  */
# define TRAP_TRACE	TRAP_TRACE
};

/* `si_code' values for SIGCHLD signal.  */
enum
{
  CLD_EXITED = 1,		/* Child has exited.  */
# define CLD_EXITED	CLD_EXITED
  CLD_KILLED,			/* Child was killed.  */
# define CLD_KILLED	CLD_KILLED
  CLD_DUMPED,			/* Child terminated abnormally.  */
# define CLD_DUMPED	CLD_DUMPED
  CLD_TRAPPED,			/* Traced child has trapped.  */
# define CLD_TRAPPED	CLD_TRAPPED
  CLD_STOPPED,			/* Child has stopped.  */
# define CLD_STOPPED	CLD_STOPPED
  CLD_CONTINUED			/* Stopped child has continued.  */
# define CLD_CONTINUED	CLD_CONTINUED
};

/* `si_code' values for SIGPOLL signal.  */
enum
{
  POLL_IN = 1,			/* Data input available.  */
# define POLL_IN	POLL_IN
  POLL_OUT,			/* Output buffers available.  */
# define POLL_OUT	POLL_OUT
  POLL_MSG,			/* Input message available.   */
# define POLL_MSG	POLL_MSG
  POLL_ERR,			/* I/O error.  */
# define POLL_ERR	POLL_ERR
  POLL_PRI,			/* High priority input available.  */
# define POLL_PRI	POLL_PRI
  POLL_HUP			/* Device disconnected.  */
# define POLL_HUP	POLL_HUP
};

# undef __need_siginfo_t
#endif	/* !have siginfo_t && (have _SIGNAL_H || need siginfo_t).  */


#if defined _SIGNAL_H && !defined __have_sigevent_t
# define __have_sigevent_t	1

/* Structure to transport application-defined values with signals.  */
# define __SIGEV_MAX_SIZE	64
# define __SIGEV_PAD_SIZE	((__SIGEV_MAX_SIZE / sizeof (int)) - 3)

typedef struct sigevent
  {
    sigval_t sigev_value;
    int sigev_signo;
    int sigev_notify;

    union
      {
	int _pad[__SIGEV_PAD_SIZE];

	struct
	  {
	    void (*_function) __PMT ((sigval_t)); /* Function to start.  */
	    void *_attribute;			  /* Really pthread_attr_t.  */
	  } _sigev_thread;
      } _sigev_un;
  } sigevent_t;

/* POSIX names to access some of the members.  */
# define sigev_notify_function   _sigev_un._sigev_thread._function
# define sigev_notify_attributes _sigev_un._sigev_thread._attribute

/* `sigev_notify' values.  */
enum
{
  SIGEV_SIGNAL = 0,		/* Notify via signal.  */
# define SIGEV_SIGNAL	SIGEV_SIGNAL
  SIGEV_NONE,			/* Other notification: meaningless.  */
# define SIGEV_NONE	SIGEV_NONE
  SIGEV_THREAD			/* Deliver via thread creation.  */
# define SIGEV_THREAD	SIGEV_THREAD
};

#endif	/* have _SIGNAL_H.  */