1 /*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 1998, 1999, 2001, 03, 04 Ralf Baechle
7 * Copyright (C) 2000, 2001 Silicon Graphics, Inc.
8 */
9 #ifndef _ASM_SIGINFO_H
10 #define _ASM_SIGINFO_H
11
12 #include <linux/config.h>
13 #include <linux/types.h>
14
15 /* This structure matches IRIX 32/n32 ABIs for binary compatibility. */
16
17 typedef union sigval {
18 int sival_int;
19 void *sival_ptr;
20 } sigval_t;
21
22 /* This structure matches IRIX 32/n32 ABIs for binary compatibility but
23 has Linux extensions. */
24
25 #define SI_MAX_SIZE 128
26 #ifdef CONFIG_MIPS32
27 #define SI_PAD_SIZE ((SI_MAX_SIZE/sizeof(int)) - 3)
28 #endif
29 #ifdef CONFIG_MIPS64
30 #define SI_PAD_SIZE ((SI_MAX_SIZE/sizeof(int)) - 4)
31 #endif
32
33 typedef struct siginfo {
34 int si_signo;
35 int si_code;
36 int si_errno;
37 int __pad0[SI_MAX_SIZE / sizeof(int) - SI_PAD_SIZE - 3];
38
39 union {
40 int _pad[SI_PAD_SIZE];
41
42 /* kill() */
43 struct {
44 pid_t _pid; /* sender's pid */
45 uid_t _uid; /* sender's uid */
46 } _kill;
47
48 /* SIGCHLD */
49 struct {
50 pid_t _pid; /* which child */
51 uid_t _uid; /* sender's uid */
52 int _status; /* exit code */
53 clock_t _utime;
54 clock_t _stime;
55 } _sigchld;
56
57 /* IRIX SIGCHLD */
58 struct {
59 pid_t _pid; /* which child */
60 clock_t _utime;
61 int _status; /* exit code */
62 clock_t _stime;
63 } _irix_sigchld;
64
65 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
66 struct {
67 void *_addr; /* faulting insn/memory ref. */
68 } _sigfault;
69
70 /* SIGPOLL, SIGXFSZ (To do ...) */
71 struct {
72 long _band; /* POLL_IN, POLL_OUT, POLL_MSG */
73 int _fd;
74 } _sigpoll;
75
76 /* POSIX.1b timers */
77 struct {
78 unsigned int _timer1;
79 unsigned int _timer2;
80 } _timer;
81
82 /* POSIX.1b signals */
83 struct {
84 pid_t _pid; /* sender's pid */
85 uid_t _uid; /* sender's uid */
86 sigval_t _sigval;
87 } _rt;
88
89 } _sifields;
90 } siginfo_t;
91
92 /*
93 * How these fields are to be accessed.
94 */
95 #define si_pid _sifields._kill._pid
96 #define si_uid _sifields._kill._uid
97 #define si_status _sifields._sigchld._status
98 #define si_utime _sifields._sigchld._utime
99 #define si_stime _sifields._sigchld._stime
100 #define si_value _sifields._rt._sigval
101 #define si_int _sifields._rt._sigval.sival_int
102 #define si_ptr _sifields._rt._sigval.sival_ptr
103 #define si_addr _sifields._sigfault._addr
104 #define si_band _sifields._sigpoll._band
105 #define si_fd _sifields._sigpoll._fd
106
107 #ifdef __KERNEL__
108 #define __SI_MASK 0xffff0000
109 #define __SI_KILL (0 << 16)
110 #define __SI_TIMER (1 << 16)
111 #define __SI_POLL (2 << 16)
112 #define __SI_FAULT (3 << 16)
113 #define __SI_CHLD (4 << 16)
114 #define __SI_RT (5 << 16)
115 #define __SI_CODE(T,N) ((T) << 16 | ((N) & 0xffff))
116 #else
117 #define __SI_KILL 0
118 #define __SI_TIMER 0
119 #define __SI_POLL 0
120 #define __SI_FAULT 0
121 #define __SI_CHLD 0
122 #define __SI_RT 0
123 #define __SI_CODE(T,N) (N)
124 #endif
125
126 /*
127 * si_code values
128 * Again these have been choosen to be IRIX compatible.
129 */
130 #define SI_USER 0 /* sent by kill, sigsend, raise */
131 #define SI_KERNEL 0x80 /* sent by the kernel from somewhere */
132 #define SI_QUEUE -1 /* sent by sigqueue */
133 #define SI_ASYNCIO -2 /* sent by AIO completion */
134 #define SI_TIMER __SI_CODE(__SI_TIMER,-3) /* sent by timer expiration */
135 #define SI_MESGQ -4 /* sent by real time mesq state change */
136 #define SI_SIGIO -5 /* sent by queued SIGIO */
137 #define SI_TKILL -6 /* sent by tkill system call */
138
139 #define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
140 #define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
141
142 /*
143 * SIGILL si_codes
144 */
145 #define ILL_ILLOPC (__SI_FAULT|1) /* illegal opcode */
146 #define ILL_ILLOPN (__SI_FAULT|2) /* illegal operand */
147 #define ILL_ILLADR (__SI_FAULT|3) /* illegal addressing mode */
148 #define ILL_ILLTRP (__SI_FAULT|4) /* illegal trap */
149 #define ILL_PRVOPC (__SI_FAULT|5) /* privileged opcode */
150 #define ILL_PRVREG (__SI_FAULT|6) /* privileged register */
151 #define ILL_COPROC (__SI_FAULT|7) /* coprocessor error */
152 #define ILL_BADSTK (__SI_FAULT|8) /* internal stack error */
153 #define NSIGILL 8
154
155 /*
156 * SIGFPE si_codes
157 */
158 #define FPE_INTDIV (__SI_FAULT|1) /* integer divide by zero */
159 #define FPE_INTOVF (__SI_FAULT|2) /* integer overflow */
160 #define FPE_FLTDIV (__SI_FAULT|3) /* floating point divide by zero */
161 #define FPE_FLTOVF (__SI_FAULT|4) /* floating point overflow */
162 #define FPE_FLTUND (__SI_FAULT|5) /* floating point underflow */
163 #define FPE_FLTRES (__SI_FAULT|6) /* floating point inexact result */
164 #define FPE_FLTINV (__SI_FAULT|7) /* floating point invalid operation */
165 #define FPE_FLTSUB (__SI_FAULT|8) /* subscript out of range */
166 #define NSIGFPE 8
167
168 /*
169 * SIGSEGV si_codes
170 */
171 #define SEGV_MAPERR (__SI_FAULT|1) /* address not mapped to object */
172 #define SEGV_ACCERR (__SI_FAULT|2) /* invalid permissions for mapped object */
173 #define NSIGSEGV 2
174
175 /*
176 * SIGBUS si_codes
177 */
178 #define BUS_ADRALN (__SI_FAULT|1) /* invalid address alignment */
179 #define BUS_ADRERR (__SI_FAULT|2) /* non-existant physical address */
180 #define BUS_OBJERR (__SI_FAULT|3) /* object specific hardware error */
181 #define NSIGBUS 3
182
183 /*
184 * SIGTRAP si_codes
185 */
186 #define TRAP_BRKPT (__SI_FAULT|1) /* process breakpoint */
187 #define TRAP_TRACE (__SI_FAULT|2) /* process trace trap */
188 #define NSIGTRAP 2
189
190 /*
191 * SIGCHLD si_codes
192 */
193 #define CLD_EXITED (__SI_CHLD|1) /* child has exited */
194 #define CLD_KILLED (__SI_CHLD|2) /* child was killed */
195 #define CLD_DUMPED (__SI_CHLD|3) /* child terminated abnormally */
196 #define CLD_TRAPPED (__SI_CHLD|4) /* traced child has trapped */
197 #define CLD_STOPPED (__SI_CHLD|5) /* child has stopped */
198 #define CLD_CONTINUED (__SI_CHLD|6) /* stopped child has continued */
199 #define NSIGCHLD 6
200
201 /*
202 * SIGPOLL si_codes
203 */
204 #define POLL_IN (__SI_POLL|1) /* data input available */
205 #define POLL_OUT (__SI_POLL|2) /* output buffers available */
206 #define POLL_MSG (__SI_POLL|3) /* input message available */
207 #define POLL_ERR (__SI_POLL|4) /* i/o error */
208 #define POLL_PRI (__SI_POLL|5) /* high priority input available */
209 #define POLL_HUP (__SI_POLL|6) /* device disconnected */
210 #define NSIGPOLL 6
211
212 /*
213 * sigevent definitions
214 *
215 * It seems likely that SIGEV_THREAD will have to be handled from
216 * userspace, libpthread transmuting it to SIGEV_SIGNAL, which the
217 * thread manager then catches and does the appropriate nonsense.
218 * However, everything is written out here so as to not get lost.
219 */
220 #define SIGEV_SIGNAL 0 /* notify via signal */
221 #define SIGEV_NONE 1 /* other notification: meaningless */
222 #define SIGEV_THREAD 2 /* deliver via thread creation */
223
224 #define SIGEV_MAX_SIZE 64
225 #define SIGEV_HEAD_SIZE (sizeof(long) + 2*sizeof(int))
226 #define SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE-SIGEV_HEAD_SIZE) / sizeof(int))
227
228 typedef struct sigevent {
229 sigval_t sigev_value;
230 int sigev_signo;
231 int sigev_notify;
232 union {
233 int _pad[SIGEV_PAD_SIZE];
234
235 struct {
236 void (*_function)(sigval_t);
237 void *_attribute; /* really pthread_attr_t */
238 } _sigev_thread;
239 } _sigev_un;
240 } sigevent_t;
241
242 #define sigev_notify_function _sigev_un._sigev_thread._function
243 #define sigev_notify_attributes _sigev_un._sigev_thread._attribute
244
245 #ifdef __KERNEL__
246 #include <linux/string.h>
247
copy_siginfo(siginfo_t * to,siginfo_t * from)248 static inline void copy_siginfo(siginfo_t *to, siginfo_t *from)
249 {
250 if (from->si_code < 0)
251 memcpy(to, from, sizeof(siginfo_t));
252 else
253 /* _sigchld is currently the largest know union member */
254 memcpy(to, from, 3*sizeof(int) + sizeof(from->_sifields._sigchld));
255 }
256
257 extern int copy_siginfo_to_user(siginfo_t *to, siginfo_t *from);
258
259 #endif /* __KERNEL__ */
260
261 #endif /* _ASM_SIGINFO_H */
262