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1#ifndef _ASM_GENERIC_SIGINFO_H
2#define _ASM_GENERIC_SIGINFO_H
3
4#include <uapi/asm-generic/siginfo.h>
5
6#define __SI_MASK 0xffff0000u
7#define __SI_KILL (0 << 16)
8#define __SI_TIMER (1 << 16)
9#define __SI_POLL (2 << 16)
10#define __SI_FAULT (3 << 16)
11#define __SI_CHLD (4 << 16)
12#define __SI_RT (5 << 16)
13#define __SI_MESGQ (6 << 16)
14#define __SI_SYS (7 << 16)
15#define __SI_CODE(T,N) ((T) | ((N) & 0xffff))
16
17struct siginfo;
18void do_schedule_next_timer(struct siginfo *info);
19
20#ifndef HAVE_ARCH_COPY_SIGINFO
21
22#include <linux/string.h>
23
24static inline void copy_siginfo(struct siginfo *to, struct siginfo *from)
25{
26 if (from->si_code < 0)
27 memcpy(to, from, sizeof(*to));
28 else
29 /* _sigchld is currently the largest know union member */
30 memcpy(to, from, __ARCH_SI_PREAMBLE_SIZE + sizeof(from->_sifields._sigchld));
31}
32
33#endif
34
35extern int copy_siginfo_to_user(struct siginfo __user *to, const struct siginfo *from);
36
37#endif
1#ifndef _ASM_GENERIC_SIGINFO_H
2#define _ASM_GENERIC_SIGINFO_H
3
4#include <linux/compiler.h>
5#include <linux/types.h>
6
7typedef 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 __kernel_uid32_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 __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
46#ifndef HAVE_ARCH_SIGINFO_T
47
48typedef 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 {
58 __kernel_pid_t _pid; /* sender's pid */
59 __ARCH_SI_UID_T _uid; /* sender's uid */
60 } _kill;
61
62 /* POSIX.1b timers */
63 struct {
64 __kernel_timer_t _tid; /* timer id */
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 {
73 __kernel_pid_t _pid; /* sender's pid */
74 __ARCH_SI_UID_T _uid; /* sender's uid */
75 sigval_t _sigval;
76 } _rt;
77
78 /* SIGCHLD */
79 struct {
80 __kernel_pid_t _pid; /* which child */
81 __ARCH_SI_UID_T _uid; /* sender's uid */
82 int _status; /* exit code */
83 __ARCH_SI_CLOCK_T _utime;
84 __ARCH_SI_CLOCK_T _stime;
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
93 short _addr_lsb; /* LSB of the reported address */
94 } _sigfault;
95
96 /* SIGPOLL */
97 struct {
98 __ARCH_SI_BAND_T _band; /* POLL_IN, POLL_OUT, POLL_MSG */
99 int _fd;
100 } _sigpoll;
101
102 /* SIGSYS */
103 struct {
104 void __user *_call_addr; /* calling user insn */
105 int _syscall; /* triggering system call number */
106 unsigned int _arch; /* AUDIT_ARCH_* of syscall */
107 } _sigsys;
108 } _sifields;
109} __ARCH_SI_ATTRIBUTES siginfo_t;
110
111/* If the arch shares siginfo, then it has SIGSYS. */
112#define __ARCH_SIGSYS
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
133#define si_addr_lsb _sifields._sigfault._addr_lsb
134#define si_band _sifields._sigpoll._band
135#define si_fd _sifields._sigpoll._fd
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
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)
151#define __SI_SYS (7 << 16)
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
161#define __SI_SYS 0
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 */
219#define BUS_ADRERR (__SI_FAULT|2) /* non-existent physical address */
220#define BUS_OBJERR (__SI_FAULT|3) /* object specific hardware error */
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
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 */
232#define TRAP_BRANCH (__SI_FAULT|3) /* process taken branch trap */
233#define TRAP_HWBKPT (__SI_FAULT|4) /* hardware breakpoint/watchpoint */
234#define NSIGTRAP 4
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
258/*
259 * SIGSYS si_codes
260 */
261#define SYS_SECCOMP (__SI_SYS|1) /* seccomp triggered */
262#define NSIGSYS 1
263
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
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))
283#endif
284
285#define SIGEV_MAX_SIZE 64
286#define SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE - __ARCH_SIGEV_PREAMBLE_SIZE) \
287 / sizeof(int))
288
289typedef 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
310struct siginfo;
311void do_schedule_next_timer(struct siginfo *info);
312
313#ifndef HAVE_ARCH_COPY_SIGINFO
314
315#include <linux/string.h>
316
317static 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
328extern int copy_siginfo_to_user(struct siginfo __user *to, struct siginfo *from);
329
330#endif /* __KERNEL__ */
331
332#endif