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1da177e4 LT |
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 | |
85efde6f | 26 | #define __ARCH_SI_UID_T __kernel_uid32_t |
1da177e4 LT |
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 | ||
d643bdca PA |
38 | #ifndef __ARCH_SI_CLOCK_T |
39 | #define __ARCH_SI_CLOCK_T __kernel_clock_t | |
40 | #endif | |
41 | ||
42 | #ifndef __ARCH_SI_ATTRIBUTES | |
43 | #define __ARCH_SI_ATTRIBUTES | |
44 | #endif | |
45 | ||
1da177e4 LT |
46 | #ifndef HAVE_ARCH_SIGINFO_T |
47 | ||
48 | typedef struct siginfo { | |
49 | int si_signo; | |
50 | int si_errno; | |
51 | int si_code; | |
52 | ||
53 | union { | |
54 | int _pad[SI_PAD_SIZE]; | |
55 | ||
56 | /* kill() */ | |
57 | struct { | |
85efde6f | 58 | __kernel_pid_t _pid; /* sender's pid */ |
1da177e4 LT |
59 | __ARCH_SI_UID_T _uid; /* sender's uid */ |
60 | } _kill; | |
61 | ||
62 | /* POSIX.1b timers */ | |
63 | struct { | |
85efde6f | 64 | __kernel_timer_t _tid; /* timer id */ |
1da177e4 LT |
65 | int _overrun; /* overrun count */ |
66 | char _pad[sizeof( __ARCH_SI_UID_T) - sizeof(int)]; | |
67 | sigval_t _sigval; /* same as below */ | |
68 | int _sys_private; /* not to be passed to user */ | |
69 | } _timer; | |
70 | ||
71 | /* POSIX.1b signals */ | |
72 | struct { | |
85efde6f | 73 | __kernel_pid_t _pid; /* sender's pid */ |
1da177e4 LT |
74 | __ARCH_SI_UID_T _uid; /* sender's uid */ |
75 | sigval_t _sigval; | |
76 | } _rt; | |
77 | ||
78 | /* SIGCHLD */ | |
79 | struct { | |
85efde6f | 80 | __kernel_pid_t _pid; /* which child */ |
1da177e4 LT |
81 | __ARCH_SI_UID_T _uid; /* sender's uid */ |
82 | int _status; /* exit code */ | |
d643bdca PA |
83 | __ARCH_SI_CLOCK_T _utime; |
84 | __ARCH_SI_CLOCK_T _stime; | |
1da177e4 LT |
85 | } _sigchld; |
86 | ||
87 | /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */ | |
88 | struct { | |
89 | void __user *_addr; /* faulting insn/memory ref. */ | |
90 | #ifdef __ARCH_SI_TRAPNO | |
91 | int _trapno; /* TRAP # which caused the signal */ | |
92 | #endif | |
ad5fa913 | 93 | short _addr_lsb; /* LSB of the reported address */ |
1da177e4 LT |
94 | } _sigfault; |
95 | ||
96 | /* SIGPOLL */ | |
97 | struct { | |
98 | __ARCH_SI_BAND_T _band; /* POLL_IN, POLL_OUT, POLL_MSG */ | |
99 | int _fd; | |
100 | } _sigpoll; | |
a0727e8c WD |
101 | |
102 | /* SIGSYS */ | |
103 | struct { | |
bb6ea430 | 104 | void __user *_call_addr; /* calling user insn */ |
a0727e8c WD |
105 | int _syscall; /* triggering system call number */ |
106 | unsigned int _arch; /* AUDIT_ARCH_* of syscall */ | |
107 | } _sigsys; | |
1da177e4 | 108 | } _sifields; |
d643bdca | 109 | } __ARCH_SI_ATTRIBUTES siginfo_t; |
1da177e4 | 110 | |
a0727e8c WD |
111 | /* If the arch shares siginfo, then it has SIGSYS. */ |
112 | #define __ARCH_SIGSYS | |
1da177e4 LT |
113 | #endif |
114 | ||
115 | /* | |
116 | * How these fields are to be accessed. | |
117 | */ | |
118 | #define si_pid _sifields._kill._pid | |
119 | #define si_uid _sifields._kill._uid | |
120 | #define si_tid _sifields._timer._tid | |
121 | #define si_overrun _sifields._timer._overrun | |
122 | #define si_sys_private _sifields._timer._sys_private | |
123 | #define si_status _sifields._sigchld._status | |
124 | #define si_utime _sifields._sigchld._utime | |
125 | #define si_stime _sifields._sigchld._stime | |
126 | #define si_value _sifields._rt._sigval | |
127 | #define si_int _sifields._rt._sigval.sival_int | |
128 | #define si_ptr _sifields._rt._sigval.sival_ptr | |
129 | #define si_addr _sifields._sigfault._addr | |
130 | #ifdef __ARCH_SI_TRAPNO | |
131 | #define si_trapno _sifields._sigfault._trapno | |
132 | #endif | |
ad5fa913 | 133 | #define si_addr_lsb _sifields._sigfault._addr_lsb |
1da177e4 LT |
134 | #define si_band _sifields._sigpoll._band |
135 | #define si_fd _sifields._sigpoll._fd | |
a0727e8c WD |
136 | #ifdef __ARCH_SIGSYS |
137 | #define si_call_addr _sifields._sigsys._call_addr | |
138 | #define si_syscall _sifields._sigsys._syscall | |
139 | #define si_arch _sifields._sigsys._arch | |
140 | #endif | |
1da177e4 LT |
141 | |
142 | #ifdef __KERNEL__ | |
143 | #define __SI_MASK 0xffff0000u | |
144 | #define __SI_KILL (0 << 16) | |
145 | #define __SI_TIMER (1 << 16) | |
146 | #define __SI_POLL (2 << 16) | |
147 | #define __SI_FAULT (3 << 16) | |
148 | #define __SI_CHLD (4 << 16) | |
149 | #define __SI_RT (5 << 16) | |
150 | #define __SI_MESGQ (6 << 16) | |
a0727e8c | 151 | #define __SI_SYS (7 << 16) |
1da177e4 LT |
152 | #define __SI_CODE(T,N) ((T) | ((N) & 0xffff)) |
153 | #else | |
154 | #define __SI_KILL 0 | |
155 | #define __SI_TIMER 0 | |
156 | #define __SI_POLL 0 | |
157 | #define __SI_FAULT 0 | |
158 | #define __SI_CHLD 0 | |
159 | #define __SI_RT 0 | |
160 | #define __SI_MESGQ 0 | |
a0727e8c | 161 | #define __SI_SYS 0 |
1da177e4 LT |
162 | #define __SI_CODE(T,N) (N) |
163 | #endif | |
164 | ||
165 | /* | |
166 | * si_code values | |
167 | * Digital reserves positive values for kernel-generated signals. | |
168 | */ | |
169 | #define SI_USER 0 /* sent by kill, sigsend, raise */ | |
170 | #define SI_KERNEL 0x80 /* sent by the kernel from somewhere */ | |
171 | #define SI_QUEUE -1 /* sent by sigqueue */ | |
172 | #define SI_TIMER __SI_CODE(__SI_TIMER,-2) /* sent by timer expiration */ | |
173 | #define SI_MESGQ __SI_CODE(__SI_MESGQ,-3) /* sent by real time mesq state change */ | |
174 | #define SI_ASYNCIO -4 /* sent by AIO completion */ | |
175 | #define SI_SIGIO -5 /* sent by queued SIGIO */ | |
176 | #define SI_TKILL -6 /* sent by tkill system call */ | |
177 | #define SI_DETHREAD -7 /* sent by execve() killing subsidiary threads */ | |
178 | ||
179 | #define SI_FROMUSER(siptr) ((siptr)->si_code <= 0) | |
180 | #define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0) | |
181 | ||
182 | /* | |
183 | * SIGILL si_codes | |
184 | */ | |
185 | #define ILL_ILLOPC (__SI_FAULT|1) /* illegal opcode */ | |
186 | #define ILL_ILLOPN (__SI_FAULT|2) /* illegal operand */ | |
187 | #define ILL_ILLADR (__SI_FAULT|3) /* illegal addressing mode */ | |
188 | #define ILL_ILLTRP (__SI_FAULT|4) /* illegal trap */ | |
189 | #define ILL_PRVOPC (__SI_FAULT|5) /* privileged opcode */ | |
190 | #define ILL_PRVREG (__SI_FAULT|6) /* privileged register */ | |
191 | #define ILL_COPROC (__SI_FAULT|7) /* coprocessor error */ | |
192 | #define ILL_BADSTK (__SI_FAULT|8) /* internal stack error */ | |
193 | #define NSIGILL 8 | |
194 | ||
195 | /* | |
196 | * SIGFPE si_codes | |
197 | */ | |
198 | #define FPE_INTDIV (__SI_FAULT|1) /* integer divide by zero */ | |
199 | #define FPE_INTOVF (__SI_FAULT|2) /* integer overflow */ | |
200 | #define FPE_FLTDIV (__SI_FAULT|3) /* floating point divide by zero */ | |
201 | #define FPE_FLTOVF (__SI_FAULT|4) /* floating point overflow */ | |
202 | #define FPE_FLTUND (__SI_FAULT|5) /* floating point underflow */ | |
203 | #define FPE_FLTRES (__SI_FAULT|6) /* floating point inexact result */ | |
204 | #define FPE_FLTINV (__SI_FAULT|7) /* floating point invalid operation */ | |
205 | #define FPE_FLTSUB (__SI_FAULT|8) /* subscript out of range */ | |
206 | #define NSIGFPE 8 | |
207 | ||
208 | /* | |
209 | * SIGSEGV si_codes | |
210 | */ | |
211 | #define SEGV_MAPERR (__SI_FAULT|1) /* address not mapped to object */ | |
212 | #define SEGV_ACCERR (__SI_FAULT|2) /* invalid permissions for mapped object */ | |
213 | #define NSIGSEGV 2 | |
214 | ||
215 | /* | |
216 | * SIGBUS si_codes | |
217 | */ | |
218 | #define BUS_ADRALN (__SI_FAULT|1) /* invalid address alignment */ | |
25985edc | 219 | #define BUS_ADRERR (__SI_FAULT|2) /* non-existent physical address */ |
1da177e4 | 220 | #define BUS_OBJERR (__SI_FAULT|3) /* object specific hardware error */ |
ad5fa913 AK |
221 | /* hardware memory error consumed on a machine check: action required */ |
222 | #define BUS_MCEERR_AR (__SI_FAULT|4) | |
223 | /* hardware memory error detected in process but not consumed: action optional*/ | |
224 | #define BUS_MCEERR_AO (__SI_FAULT|5) | |
225 | #define NSIGBUS 5 | |
1da177e4 LT |
226 | |
227 | /* | |
228 | * SIGTRAP si_codes | |
229 | */ | |
230 | #define TRAP_BRKPT (__SI_FAULT|1) /* process breakpoint */ | |
231 | #define TRAP_TRACE (__SI_FAULT|2) /* process trace trap */ | |
da654b74 SD |
232 | #define TRAP_BRANCH (__SI_FAULT|3) /* process taken branch trap */ |
233 | #define TRAP_HWBKPT (__SI_FAULT|4) /* hardware breakpoint/watchpoint */ | |
0769c298 | 234 | #define NSIGTRAP 4 |
1da177e4 LT |
235 | |
236 | /* | |
237 | * SIGCHLD si_codes | |
238 | */ | |
239 | #define CLD_EXITED (__SI_CHLD|1) /* child has exited */ | |
240 | #define CLD_KILLED (__SI_CHLD|2) /* child was killed */ | |
241 | #define CLD_DUMPED (__SI_CHLD|3) /* child terminated abnormally */ | |
242 | #define CLD_TRAPPED (__SI_CHLD|4) /* traced child has trapped */ | |
243 | #define CLD_STOPPED (__SI_CHLD|5) /* child has stopped */ | |
244 | #define CLD_CONTINUED (__SI_CHLD|6) /* stopped child has continued */ | |
245 | #define NSIGCHLD 6 | |
246 | ||
247 | /* | |
248 | * SIGPOLL si_codes | |
249 | */ | |
250 | #define POLL_IN (__SI_POLL|1) /* data input available */ | |
251 | #define POLL_OUT (__SI_POLL|2) /* output buffers available */ | |
252 | #define POLL_MSG (__SI_POLL|3) /* input message available */ | |
253 | #define POLL_ERR (__SI_POLL|4) /* i/o error */ | |
254 | #define POLL_PRI (__SI_POLL|5) /* high priority input available */ | |
255 | #define POLL_HUP (__SI_POLL|6) /* device disconnected */ | |
256 | #define NSIGPOLL 6 | |
257 | ||
a0727e8c WD |
258 | /* |
259 | * SIGSYS si_codes | |
260 | */ | |
261 | #define SYS_SECCOMP (__SI_SYS|1) /* seccomp triggered */ | |
262 | #define NSIGSYS 1 | |
263 | ||
1da177e4 LT |
264 | /* |
265 | * sigevent definitions | |
266 | * | |
267 | * It seems likely that SIGEV_THREAD will have to be handled from | |
268 | * userspace, libpthread transmuting it to SIGEV_SIGNAL, which the | |
269 | * thread manager then catches and does the appropriate nonsense. | |
270 | * However, everything is written out here so as to not get lost. | |
271 | */ | |
272 | #define SIGEV_SIGNAL 0 /* notify via signal */ | |
273 | #define SIGEV_NONE 1 /* other notification: meaningless */ | |
274 | #define SIGEV_THREAD 2 /* deliver via thread creation */ | |
275 | #define SIGEV_THREAD_ID 4 /* deliver to thread */ | |
276 | ||
a71c1ab5 SR |
277 | /* |
278 | * This works because the alignment is ok on all current architectures | |
279 | * but we leave open this being overridden in the future | |
280 | */ | |
281 | #ifndef __ARCH_SIGEV_PREAMBLE_SIZE | |
282 | #define __ARCH_SIGEV_PREAMBLE_SIZE (sizeof(int) * 2 + sizeof(sigval_t)) | |
1da177e4 LT |
283 | #endif |
284 | ||
a71c1ab5 SR |
285 | #define SIGEV_MAX_SIZE 64 |
286 | #define SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE - __ARCH_SIGEV_PREAMBLE_SIZE) \ | |
287 | / sizeof(int)) | |
288 | ||
1da177e4 LT |
289 | typedef struct sigevent { |
290 | sigval_t sigev_value; | |
291 | int sigev_signo; | |
292 | int sigev_notify; | |
293 | union { | |
294 | int _pad[SIGEV_PAD_SIZE]; | |
295 | int _tid; | |
296 | ||
297 | struct { | |
298 | void (*_function)(sigval_t); | |
299 | void *_attribute; /* really pthread_attr_t */ | |
300 | } _sigev_thread; | |
301 | } _sigev_un; | |
302 | } sigevent_t; | |
303 | ||
304 | #define sigev_notify_function _sigev_un._sigev_thread._function | |
305 | #define sigev_notify_attributes _sigev_un._sigev_thread._attribute | |
306 | #define sigev_notify_thread_id _sigev_un._tid | |
307 | ||
308 | #ifdef __KERNEL__ | |
309 | ||
310 | struct siginfo; | |
311 | void do_schedule_next_timer(struct siginfo *info); | |
312 | ||
313 | #ifndef HAVE_ARCH_COPY_SIGINFO | |
314 | ||
315 | #include <linux/string.h> | |
316 | ||
317 | static inline void copy_siginfo(struct siginfo *to, struct siginfo *from) | |
318 | { | |
319 | if (from->si_code < 0) | |
320 | memcpy(to, from, sizeof(*to)); | |
321 | else | |
322 | /* _sigchld is currently the largest know union member */ | |
323 | memcpy(to, from, __ARCH_SI_PREAMBLE_SIZE + sizeof(from->_sifields._sigchld)); | |
324 | } | |
325 | ||
326 | #endif | |
327 | ||
328 | extern int copy_siginfo_to_user(struct siginfo __user *to, struct siginfo *from); | |
329 | ||
330 | #endif /* __KERNEL__ */ | |
331 | ||
332 | #endif |