1 /* $Id: siginfo.h,v 1.2 2000/01/27 01:05:37 ralf Exp $
2 *
3 * This file is subject to the terms and conditions of the GNU General Public
4 * License. See the file "COPYING" in the main directory of this archive
5 * for more details.
6 *
7 * Copyright (C) 1998, 1999 by Ralf Baechle
8 */
9 #ifndef _ASM_SIGINFO_H
10 #define _ASM_SIGINFO_H
11
12 #include <linux/types.h>
13
14 /* This structure matches IRIX 32/n32 ABIs for binary compatibility. */
15
16 typedef union sigval {
17 int sival_int;
18 void *sival_ptr;
19 } sigval_t;
20
21 /* This structure matches IRIX 32/n32 ABIs for binary compatibility but
22 has Linux extensions. */
23
24 #define SI_MAX_SIZE 128
25 #define SI_PAD_SIZE ((SI_MAX_SIZE/sizeof(int)) - 3)
26
27 typedef struct siginfo {
28 int si_signo;
29 int si_code;
30 int si_errno;
31
32 union {
33 int _pad[SI_PAD_SIZE];
34
35 /* kill() */
36 struct {
37 pid_t _pid; /* sender's pid */
38 uid_t _uid; /* sender's uid */
39 } _kill;
40
41 /* SIGCHLD */
42 struct {
43 pid_t _pid; /* which child */
44 uid_t _uid; /* sender's uid */
45 clock_t _utime;
46 int _status; /* exit code */
47 clock_t _stime;
48 } _sigchld;
49
50 /* IRIX SIGCHLD */
51 struct {
52 pid_t _pid; /* which child */
53 clock_t _utime;
54 int _status; /* exit code */
55 clock_t _stime;
56 } _irix_sigchld;
57
58 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
59 struct {
60 void *_addr; /* faulting insn/memory ref. */
61 } _sigfault;
62
63 /* SIGPOLL, SIGXFSZ (To do ...) */
64 struct {
65 int _band; /* POLL_IN, POLL_OUT, POLL_MSG */
66 int _fd;
67 } _sigpoll;
68
69 /* POSIX.1b timers */
70 struct {
71 unsigned int _timer1;
72 unsigned int _timer2;
73 } _timer;
74
75 /* POSIX.1b signals */
76 struct {
77 pid_t _pid; /* sender's pid */
78 uid_t _uid; /* sender's uid */
79 sigval_t _sigval;
80 } _rt;
81
82 } _sifields;
83 } siginfo_t;
84
85 /*
86 * How these fields are to be accessed.
87 */
88 #define si_pid _sifields._kill._pid
89 #define si_uid _sifields._kill._uid
90 #define si_status _sifields._sigchld._status
91 #define si_utime _sifields._sigchld._utime
92 #define si_stime _sifields._sigchld._stime
93 #define si_value _sifields._rt._sigval
94 #define si_int _sifields._rt._sigval.sival_int
95 #define si_ptr _sifields._rt._sigval.sival_ptr
96 #define si_addr _sifields._sigfault._addr
97 #define si_band _sifields._sigpoll._band
98 #define si_fd _sifields._sigpoll._fd
99
100 #ifdef __KERNEL__
101 #define __SI_MASK 0xffff0000
102 #define __SI_KILL (0 << 16)
103 #define __SI_TIMER (1 << 16)
104 #define __SI_POLL (2 << 16)
105 #define __SI_FAULT (3 << 16)
106 #define __SI_CHLD (4 << 16)
107 #define __SI_RT (5 << 16)
108 #define __SI_CODE(T,N) ((T) << 16 | ((N) & 0xffff))
109 #else
110 #define __SI_KILL 0
111 #define __SI_TIMER 0
112 #define __SI_POLL 0
113 #define __SI_FAULT 0
114 #define __SI_CHLD 0
115 #define __SI_RT 0
116 #define __SI_CODE(T,N) (N)
117 #endif
118
119 /*
120 * si_code values
121 * Again these have been choosen to be IRIX compatible.
122 */
123 #define SI_USER 0 /* sent by kill, sigsend, raise */
124 #define SI_KERNEL 0x80 /* sent by the kernel from somewhere */
125 #define SI_QUEUE -1 /* sent by sigqueue */
126 #define SI_ASYNCIO -2 /* sent by AIO completion */
127 #define SI_TIMER __SI_CODE(__SI_TIMER,-3) /* sent by timer expiration */
128 #define SI_MESGQ -4 /* sent by real time mesq state change */
129 #define SI_SIGIO -5 /* sent by queued SIGIO */
130
131 #define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
132 #define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
133
134 /*
135 * SIGILL si_codes
136 */
137 #define ILL_ILLOPC (__SI_FAULT|1) /* illegal opcode */
138 #define ILL_ILLOPN (__SI_FAULT|2) /* illegal operand */
139 #define ILL_ILLADR (__SI_FAULT|3) /* illegal addressing mode */
140 #define ILL_ILLTRP (__SI_FAULT|4) /* illegal trap */
141 #define ILL_PRVOPC (__SI_FAULT|5) /* privileged opcode */
142 #define ILL_PRVREG (__SI_FAULT|6) /* privileged register */
143 #define ILL_COPROC (__SI_FAULT|7) /* coprocessor error */
144 #define ILL_BADSTK (__SI_FAULT|8) /* internal stack error */
145 #define NSIGILL 8
146
147 /*
148 * SIGFPE si_codes
149 */
150 #define FPE_INTDIV (__SI_FAULT|1) /* integer divide by zero */
151 #define FPE_INTOVF (__SI_FAULT|2) /* integer overflow */
152 #define FPE_FLTDIV (__SI_FAULT|3) /* floating point divide by zero */
153 #define FPE_FLTOVF (__SI_FAULT|4) /* floating point overflow */
154 #define FPE_FLTUND (__SI_FAULT|5) /* floating point underflow */
155 #define FPE_FLTRES (__SI_FAULT|6) /* floating point inexact result */
156 #define FPE_FLTINV (__SI_FAULT|7) /* floating point invalid operation */
157 #define FPE_FLTSUB (__SI_FAULT|8) /* subscript out of range */
158 #define NSIGFPE 8
159
160 /*
161 * SIGSEGV si_codes
162 */
163 #define SEGV_MAPERR (__SI_FAULT|1) /* address not mapped to object */
164 #define SEGV_ACCERR (__SI_FAULT|2) /* invalid permissions for mapped object */
165 #define NSIGSEGV 2
166
167 /*
168 * SIGBUS si_codes
169 */
170 #define BUS_ADRALN (__SI_FAULT|1) /* invalid address alignment */
171 #define BUS_ADRERR (__SI_FAULT|2) /* non-existant physical address */
172 #define BUS_OBJERR (__SI_FAULT|3) /* object specific hardware error */
173 #define NSIGBUS 3
174
175 /*
176 * SIGTRAP si_codes
177 */
178 #define TRAP_BRKPT (__SI_FAULT|1) /* process breakpoint */
179 #define TRAP_TRACE (__SI_FAULT|2) /* process trace trap */
180 #define NSIGTRAP 2
181
182 /*
183 * SIGCHLD si_codes
184 */
185 #define CLD_EXITED (__SI_CHLD|1) /* child has exited */
186 #define CLD_KILLED (__SI_CHLD|2) /* child was killed */
187 #define CLD_DUMPED (__SI_CHLD|3) /* child terminated abnormally */
188 #define CLD_TRAPPED (__SI_CHLD|4) /* traced child has trapped */
189 #define CLD_STOPPED (__SI_CHLD|5) /* child has stopped */
190 #define CLD_CONTINUED (__SI_CHLD|6) /* stopped child has continued */
191 #define NSIGCHLD 6
192
193 /*
194 * SIGPOLL si_codes
195 */
196 #define POLL_IN (__SI_POLL|1) /* data input available */
197 #define POLL_OUT (__SI_POLL|2) /* output buffers available */
198 #define POLL_MSG (__SI_POLL|3) /* input message available */
199 #define POLL_ERR (__SI_POLL|4) /* i/o error */
200 #define POLL_PRI (__SI_POLL|5) /* high priority input available */
201 #define POLL_HUP (__SI_POLL|6) /* device disconnected */
202 #define NSIGPOLL 6
203
204 /*
205 * sigevent definitions
206 *
207 * It seems likely that SIGEV_THREAD will have to be handled from
208 * userspace, libpthread transmuting it to SIGEV_SIGNAL, which the
209 * thread manager then catches and does the appropriate nonsense.
210 * However, everything is written out here so as to not get lost.
211 */
212 #define SIGEV_NONE 128 /* other notification: meaningless */
213 #define SIGEV_SIGNAL 129 /* notify via signal */
214 #define SIGEV_CALLBACK 130 /* ??? */
215 #define SIGEV_THREAD 131 /* deliver via thread creation */
216
217 #define SIGEV_MAX_SIZE 64
218 #define SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 4)
219
220 /* XXX This one isn't yet IRIX / ABI compatible. */
221 typedef struct sigevent {
222 int sigev_notify;
223 sigval_t sigev_value;
224 int sigev_signo;
225 union {
226 int _pad[SIGEV_PAD_SIZE];
227
228 struct {
229 void (*_function)(sigval_t);
230 void *_attribute; /* really pthread_attr_t */
231 } _sigev_thread;
232 } _sigev_un;
233 } sigevent_t;
234
235 #define sigev_notify_function _sigev_un._sigev_thread._function
236 #define sigev_notify_attributes _sigev_un._sigev_thread._attribute
237
238 #ifdef __KERNEL__
239 #include <linux/string.h>
240
241 extern inline void copy_siginfo(siginfo_t *to, siginfo_t *from)
242 {
243 if (from->si_code < 0)
244 memcpy(to, from, sizeof(siginfo_t));
245 else
246 /* _sigchld is currently the largest know union member */
247 memcpy(to, from, 3*sizeof(int) + sizeof(from->_sifields._sigchld));
248 }
249
250 extern int copy_siginfo_to_user(siginfo_t *to, siginfo_t *from);
251
252 #endif /* __KERNEL__ */
253
254 #endif /* _ASM_SIGINFO_H */
255
This page was automatically generated by the
LXR engine.
Visit the LXR main site for more
information.