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1 | #ifndef _ASM_GENERIC_SIGINFO_H |
2 | #define _ASM_GENERIC_SIGINFO_H | |
3 | ||
4 | #include <linux/compiler.h> | |
5 | #include <linux/types.h> | |
6 | ||
7 | typedef union sigval { | |
8 | int sival_int; | |
9 | void __user *sival_ptr; | |
10 | } sigval_t; | |
11 | ||
12 | /* | |
13 | * This is the size (including padding) of the part of the | |
14 | * struct siginfo that is before the union. | |
15 | */ | |
16 | #ifndef __ARCH_SI_PREAMBLE_SIZE | |
17 | #define __ARCH_SI_PREAMBLE_SIZE (3 * sizeof(int)) | |
18 | #endif | |
19 | ||
20 | #define SI_MAX_SIZE 128 | |
21 | #ifndef SI_PAD_SIZE | |
22 | #define SI_PAD_SIZE ((SI_MAX_SIZE - __ARCH_SI_PREAMBLE_SIZE) / sizeof(int)) | |
23 | #endif | |
24 | ||
25 | #ifndef __ARCH_SI_UID_T | |
26 | #define __ARCH_SI_UID_T uid_t | |
27 | #endif | |
28 | ||
29 | /* | |
30 | * The default "si_band" type is "long", as specified by POSIX. | |
31 | * However, some architectures want to override this to "int" | |
32 | * for historical compatibility reasons, so we allow that. | |
33 | */ | |
34 | #ifndef __ARCH_SI_BAND_T | |
35 | #define __ARCH_SI_BAND_T long | |
36 | #endif | |
37 | ||
38 | #ifndef HAVE_ARCH_SIGINFO_T | |
39 | ||
40 | typedef struct siginfo { | |
41 | int si_signo; | |
42 | int si_errno; | |
43 | int si_code; | |
44 | ||
45 | union { | |
46 | int _pad[SI_PAD_SIZE]; | |
47 | ||
48 | /* kill() */ | |
49 | struct { | |
50 | pid_t _pid; /* sender's pid */ | |
51 | __ARCH_SI_UID_T _uid; /* sender's uid */ | |
52 | } _kill; | |
53 | ||
54 | /* POSIX.1b timers */ | |
55 | struct { | |
56 | timer_t _tid; /* timer id */ | |
57 | int _overrun; /* overrun count */ | |
58 | char _pad[sizeof( __ARCH_SI_UID_T) - sizeof(int)]; | |
59 | sigval_t _sigval; /* same as below */ | |
60 | int _sys_private; /* not to be passed to user */ | |
61 | } _timer; | |
62 | ||
63 | /* POSIX.1b signals */ | |
64 | struct { | |
65 | pid_t _pid; /* sender's pid */ | |
66 | __ARCH_SI_UID_T _uid; /* sender's uid */ | |
67 | sigval_t _sigval; | |
68 | } _rt; | |
69 | ||
70 | /* SIGCHLD */ | |
71 | struct { | |
72 | pid_t _pid; /* which child */ | |
73 | __ARCH_SI_UID_T _uid; /* sender's uid */ | |
74 | int _status; /* exit code */ | |
75 | clock_t _utime; | |
76 | clock_t _stime; | |
77 | } _sigchld; | |
78 | ||
79 | /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */ | |
80 | struct { | |
81 | void __user *_addr; /* faulting insn/memory ref. */ | |
82 | #ifdef __ARCH_SI_TRAPNO | |
83 | int _trapno; /* TRAP # which caused the signal */ | |
84 | #endif | |
85 | } _sigfault; | |
86 | ||
87 | /* SIGPOLL */ | |
88 | struct { | |
89 | __ARCH_SI_BAND_T _band; /* POLL_IN, POLL_OUT, POLL_MSG */ | |
90 | int _fd; | |
91 | } _sigpoll; | |
92 | } _sifields; | |
93 | } siginfo_t; | |
94 | ||
95 | #endif | |
96 | ||
97 | /* | |
98 | * How these fields are to be accessed. | |
99 | */ | |
100 | #define si_pid _sifields._kill._pid | |
101 | #define si_uid _sifields._kill._uid | |
102 | #define si_tid _sifields._timer._tid | |
103 | #define si_overrun _sifields._timer._overrun | |
104 | #define si_sys_private _sifields._timer._sys_private | |
105 | #define si_status _sifields._sigchld._status | |
106 | #define si_utime _sifields._sigchld._utime | |
107 | #define si_stime _sifields._sigchld._stime | |
108 | #define si_value _sifields._rt._sigval | |
109 | #define si_int _sifields._rt._sigval.sival_int | |
110 | #define si_ptr _sifields._rt._sigval.sival_ptr | |
111 | #define si_addr _sifields._sigfault._addr | |
112 | #ifdef __ARCH_SI_TRAPNO | |
113 | #define si_trapno _sifields._sigfault._trapno | |
114 | #endif | |
115 | #define si_band _sifields._sigpoll._band | |
116 | #define si_fd _sifields._sigpoll._fd | |
117 | ||
118 | #ifdef __KERNEL__ | |
119 | #define __SI_MASK 0xffff0000u | |
120 | #define __SI_KILL (0 << 16) | |
121 | #define __SI_TIMER (1 << 16) | |
122 | #define __SI_POLL (2 << 16) | |
123 | #define __SI_FAULT (3 << 16) | |
124 | #define __SI_CHLD (4 << 16) | |
125 | #define __SI_RT (5 << 16) | |
126 | #define __SI_MESGQ (6 << 16) | |
127 | #define __SI_CODE(T,N) ((T) | ((N) & 0xffff)) | |
128 | #else | |
129 | #define __SI_KILL 0 | |
130 | #define __SI_TIMER 0 | |
131 | #define __SI_POLL 0 | |
132 | #define __SI_FAULT 0 | |
133 | #define __SI_CHLD 0 | |
134 | #define __SI_RT 0 | |
135 | #define __SI_MESGQ 0 | |
136 | #define __SI_CODE(T,N) (N) | |
137 | #endif | |
138 | ||
139 | /* | |
140 | * si_code values | |
141 | * Digital reserves positive values for kernel-generated signals. | |
142 | */ | |
143 | #define SI_USER 0 /* sent by kill, sigsend, raise */ | |
144 | #define SI_KERNEL 0x80 /* sent by the kernel from somewhere */ | |
145 | #define SI_QUEUE -1 /* sent by sigqueue */ | |
146 | #define SI_TIMER __SI_CODE(__SI_TIMER,-2) /* sent by timer expiration */ | |
147 | #define SI_MESGQ __SI_CODE(__SI_MESGQ,-3) /* sent by real time mesq state change */ | |
148 | #define SI_ASYNCIO -4 /* sent by AIO completion */ | |
149 | #define SI_SIGIO -5 /* sent by queued SIGIO */ | |
150 | #define SI_TKILL -6 /* sent by tkill system call */ | |
151 | #define SI_DETHREAD -7 /* sent by execve() killing subsidiary threads */ | |
152 | ||
153 | #define SI_FROMUSER(siptr) ((siptr)->si_code <= 0) | |
154 | #define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0) | |
155 | ||
156 | /* | |
157 | * SIGILL si_codes | |
158 | */ | |
159 | #define ILL_ILLOPC (__SI_FAULT|1) /* illegal opcode */ | |
160 | #define ILL_ILLOPN (__SI_FAULT|2) /* illegal operand */ | |
161 | #define ILL_ILLADR (__SI_FAULT|3) /* illegal addressing mode */ | |
162 | #define ILL_ILLTRP (__SI_FAULT|4) /* illegal trap */ | |
163 | #define ILL_PRVOPC (__SI_FAULT|5) /* privileged opcode */ | |
164 | #define ILL_PRVREG (__SI_FAULT|6) /* privileged register */ | |
165 | #define ILL_COPROC (__SI_FAULT|7) /* coprocessor error */ | |
166 | #define ILL_BADSTK (__SI_FAULT|8) /* internal stack error */ | |
167 | #define NSIGILL 8 | |
168 | ||
169 | /* | |
170 | * SIGFPE si_codes | |
171 | */ | |
172 | #define FPE_INTDIV (__SI_FAULT|1) /* integer divide by zero */ | |
173 | #define FPE_INTOVF (__SI_FAULT|2) /* integer overflow */ | |
174 | #define FPE_FLTDIV (__SI_FAULT|3) /* floating point divide by zero */ | |
175 | #define FPE_FLTOVF (__SI_FAULT|4) /* floating point overflow */ | |
176 | #define FPE_FLTUND (__SI_FAULT|5) /* floating point underflow */ | |
177 | #define FPE_FLTRES (__SI_FAULT|6) /* floating point inexact result */ | |
178 | #define FPE_FLTINV (__SI_FAULT|7) /* floating point invalid operation */ | |
179 | #define FPE_FLTSUB (__SI_FAULT|8) /* subscript out of range */ | |
180 | #define NSIGFPE 8 | |
181 | ||
182 | /* | |
183 | * SIGSEGV si_codes | |
184 | */ | |
185 | #define SEGV_MAPERR (__SI_FAULT|1) /* address not mapped to object */ | |
186 | #define SEGV_ACCERR (__SI_FAULT|2) /* invalid permissions for mapped object */ | |
187 | #define NSIGSEGV 2 | |
188 | ||
189 | /* | |
190 | * SIGBUS si_codes | |
191 | */ | |
192 | #define BUS_ADRALN (__SI_FAULT|1) /* invalid address alignment */ | |
193 | #define BUS_ADRERR (__SI_FAULT|2) /* non-existant physical address */ | |
194 | #define BUS_OBJERR (__SI_FAULT|3) /* object specific hardware error */ | |
195 | #define NSIGBUS 3 | |
196 | ||
197 | /* | |
198 | * SIGTRAP si_codes | |
199 | */ | |
200 | #define TRAP_BRKPT (__SI_FAULT|1) /* process breakpoint */ | |
201 | #define TRAP_TRACE (__SI_FAULT|2) /* process trace trap */ | |
da654b74 SD |
202 | #define TRAP_BRANCH (__SI_FAULT|3) /* process taken branch trap */ |
203 | #define TRAP_HWBKPT (__SI_FAULT|4) /* hardware breakpoint/watchpoint */ | |
1da177e4 LT |
204 | #define NSIGTRAP 2 |
205 | ||
206 | /* | |
207 | * SIGCHLD si_codes | |
208 | */ | |
209 | #define CLD_EXITED (__SI_CHLD|1) /* child has exited */ | |
210 | #define CLD_KILLED (__SI_CHLD|2) /* child was killed */ | |
211 | #define CLD_DUMPED (__SI_CHLD|3) /* child terminated abnormally */ | |
212 | #define CLD_TRAPPED (__SI_CHLD|4) /* traced child has trapped */ | |
213 | #define CLD_STOPPED (__SI_CHLD|5) /* child has stopped */ | |
214 | #define CLD_CONTINUED (__SI_CHLD|6) /* stopped child has continued */ | |
215 | #define NSIGCHLD 6 | |
216 | ||
217 | /* | |
218 | * SIGPOLL si_codes | |
219 | */ | |
220 | #define POLL_IN (__SI_POLL|1) /* data input available */ | |
221 | #define POLL_OUT (__SI_POLL|2) /* output buffers available */ | |
222 | #define POLL_MSG (__SI_POLL|3) /* input message available */ | |
223 | #define POLL_ERR (__SI_POLL|4) /* i/o error */ | |
224 | #define POLL_PRI (__SI_POLL|5) /* high priority input available */ | |
225 | #define POLL_HUP (__SI_POLL|6) /* device disconnected */ | |
226 | #define NSIGPOLL 6 | |
227 | ||
228 | /* | |
229 | * sigevent definitions | |
230 | * | |
231 | * It seems likely that SIGEV_THREAD will have to be handled from | |
232 | * userspace, libpthread transmuting it to SIGEV_SIGNAL, which the | |
233 | * thread manager then catches and does the appropriate nonsense. | |
234 | * However, everything is written out here so as to not get lost. | |
235 | */ | |
236 | #define SIGEV_SIGNAL 0 /* notify via signal */ | |
237 | #define SIGEV_NONE 1 /* other notification: meaningless */ | |
238 | #define SIGEV_THREAD 2 /* deliver via thread creation */ | |
239 | #define SIGEV_THREAD_ID 4 /* deliver to thread */ | |
240 | ||
a71c1ab5 SR |
241 | /* |
242 | * This works because the alignment is ok on all current architectures | |
243 | * but we leave open this being overridden in the future | |
244 | */ | |
245 | #ifndef __ARCH_SIGEV_PREAMBLE_SIZE | |
246 | #define __ARCH_SIGEV_PREAMBLE_SIZE (sizeof(int) * 2 + sizeof(sigval_t)) | |
1da177e4 LT |
247 | #endif |
248 | ||
a71c1ab5 SR |
249 | #define SIGEV_MAX_SIZE 64 |
250 | #define SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE - __ARCH_SIGEV_PREAMBLE_SIZE) \ | |
251 | / sizeof(int)) | |
252 | ||
1da177e4 LT |
253 | typedef struct sigevent { |
254 | sigval_t sigev_value; | |
255 | int sigev_signo; | |
256 | int sigev_notify; | |
257 | union { | |
258 | int _pad[SIGEV_PAD_SIZE]; | |
259 | int _tid; | |
260 | ||
261 | struct { | |
262 | void (*_function)(sigval_t); | |
263 | void *_attribute; /* really pthread_attr_t */ | |
264 | } _sigev_thread; | |
265 | } _sigev_un; | |
266 | } sigevent_t; | |
267 | ||
268 | #define sigev_notify_function _sigev_un._sigev_thread._function | |
269 | #define sigev_notify_attributes _sigev_un._sigev_thread._attribute | |
270 | #define sigev_notify_thread_id _sigev_un._tid | |
271 | ||
272 | #ifdef __KERNEL__ | |
273 | ||
274 | struct siginfo; | |
275 | void do_schedule_next_timer(struct siginfo *info); | |
276 | ||
277 | #ifndef HAVE_ARCH_COPY_SIGINFO | |
278 | ||
279 | #include <linux/string.h> | |
280 | ||
281 | static inline void copy_siginfo(struct siginfo *to, struct siginfo *from) | |
282 | { | |
283 | if (from->si_code < 0) | |
284 | memcpy(to, from, sizeof(*to)); | |
285 | else | |
286 | /* _sigchld is currently the largest know union member */ | |
287 | memcpy(to, from, __ARCH_SI_PREAMBLE_SIZE + sizeof(from->_sifields._sigchld)); | |
288 | } | |
289 | ||
290 | #endif | |
291 | ||
292 | extern int copy_siginfo_to_user(struct siginfo __user *to, struct siginfo *from); | |
293 | ||
294 | #endif /* __KERNEL__ */ | |
295 | ||
296 | #endif |