1 #ifndef _I386_SIGINFO_H
2 #define _I386_SIGINFO_H
3
4 #include <linux/types.h>
5
6 /* XXX: This structure was copied from the Alpha; is there an iBCS version? */
7
8 typedef union sigval {
9 int sival_int;
10 void *sival_ptr;
11 } sigval_t;
12
13 #define SI_MAX_SIZE 128
14 #define SI_PAD_SIZE ((SI_MAX_SIZE/sizeof(int)) - 3)
15
16 typedef struct siginfo {
17 int si_signo;
18 int si_errno;
19 int si_code;
20
21 union {
22 int _pad[SI_PAD_SIZE];
23
24 /* kill() */
25 struct {
26 pid_t _pid; /* sender's pid */
27 uid_t _uid; /* sender's uid */
28 } _kill;
29
30 /* POSIX.1b timers */
31 struct {
32 unsigned int _timer1;
33 unsigned int _timer2;
34 } _timer;
35
36 /* POSIX.1b signals */
37 struct {
38 pid_t _pid; /* sender's pid */
39 uid_t _uid; /* sender's uid */
40 sigval_t _sigval;
41 } _rt;
42
43 /* SIGCHLD */
44 struct {
45 pid_t _pid; /* which child */
46 uid_t _uid; /* sender's uid */
47 int _status; /* exit code */
48 clock_t _utime;
49 clock_t _stime;
50 } _sigchld;
51
52 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
53 struct {
54 void *_addr; /* faulting insn/memory ref. */
55 } _sigfault;
56
57 /* SIGPOLL */
58 struct {
59 int _band; /* POLL_IN, POLL_OUT, POLL_MSG */
60 int _fd;
61 } _sigpoll;
62 } _sifields;
63 } siginfo_t;
64
65 /*
66 * How these fields are to be accessed.
67 */
68 #define si_pid _sifields._kill._pid
69 #define si_uid _sifields._kill._uid
70 #define si_status _sifields._sigchld._status
71 #define si_utime _sifields._sigchld._utime
72 #define si_stime _sifields._sigchld._stime
73 #define si_value _sifields._rt._sigval
74 #define si_int _sifields._rt._sigval.sival_int
75 #define si_ptr _sifields._rt._sigval.sival_ptr
76 #define si_addr _sifields._sigfault._addr
77 #define si_band _sifields._sigpoll._band
78 #define si_fd _sifields._sigpoll._fd
79
80 #ifdef __KERNEL__
81 #define __SI_MASK 0xffff0000
82 #define __SI_KILL (0 << 16)
83 #define __SI_TIMER (1 << 16)
84 #define __SI_POLL (2 << 16)
85 #define __SI_FAULT (3 << 16)
86 #define __SI_CHLD (4 << 16)
87 #define __SI_RT (5 << 16)
88 #define __SI_CODE(T,N) ((T) << 16 | ((N) & 0xffff))
89 #else
90 #define __SI_KILL 0
91 #define __SI_TIMER 0
92 #define __SI_POLL 0
93 #define __SI_FAULT 0
94 #define __SI_CHLD 0
95 #define __SI_RT 0
96 #define __SI_CODE(T,N) (N)
97 #endif
98
99 /*
100 * si_code values
101 * Digital reserves positive values for kernel-generated signals.
102 */
103 #define SI_USER 0 /* sent by kill, sigsend, raise */
104 #define SI_KERNEL 0x80 /* sent by the kernel from somewhere */
105 #define SI_QUEUE -1 /* sent by sigqueue */
106 #define SI_TIMER __SI_CODE(__SI_TIMER,-2) /* sent by timer expiration */
107 #define SI_MESGQ -3 /* sent by real time mesq state change */
108 #define SI_ASYNCIO -4 /* sent by AIO completion */
109 #define SI_SIGIO -5 /* sent by queued SIGIO */
110 #define SI_TKILL -6 /* sent by tkill system call */
111
112 #define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
113 #define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
114
115 /*
116 * SIGILL si_codes
117 */
118 #define ILL_ILLOPC (__SI_FAULT|1) /* illegal opcode */
119 #define ILL_ILLOPN (__SI_FAULT|2) /* illegal operand */
120 #define ILL_ILLADR (__SI_FAULT|3) /* illegal addressing mode */
121 #define ILL_ILLTRP (__SI_FAULT|4) /* illegal trap */
122 #define ILL_PRVOPC (__SI_FAULT|5) /* privileged opcode */
123 #define ILL_PRVREG (__SI_FAULT|6) /* privileged register */
124 #define ILL_COPROC (__SI_FAULT|7) /* coprocessor error */
125 #define ILL_BADSTK (__SI_FAULT|8) /* internal stack error */
126 #define NSIGILL 8
127
128 /*
129 * SIGFPE si_codes
130 */
131 #define FPE_INTDIV (__SI_FAULT|1) /* integer divide by zero */
132 #define FPE_INTOVF (__SI_FAULT|2) /* integer overflow */
133 #define FPE_FLTDIV (__SI_FAULT|3) /* floating point divide by zero */
134 #define FPE_FLTOVF (__SI_FAULT|4) /* floating point overflow */
135 #define FPE_FLTUND (__SI_FAULT|5) /* floating point underflow */
136 #define FPE_FLTRES (__SI_FAULT|6) /* floating point inexact result */
137 #define FPE_FLTINV (__SI_FAULT|7) /* floating point invalid operation */
138 #define FPE_FLTSUB (__SI_FAULT|8) /* subscript out of range */
139 #define NSIGFPE 8
140
141 /*
142 * SIGSEGV si_codes
143 */
144 #define SEGV_MAPERR (__SI_FAULT|1) /* address not mapped to object */
145 #define SEGV_ACCERR (__SI_FAULT|2) /* invalid permissions for mapped object */
146 #define NSIGSEGV 2
147
148 /*
149 * SIGBUS si_codes
150 */
151 #define BUS_ADRALN (__SI_FAULT|1) /* invalid address alignment */
152 #define BUS_ADRERR (__SI_FAULT|2) /* non-existant physical address */
153 #define BUS_OBJERR (__SI_FAULT|3) /* object specific hardware error */
154 #define NSIGBUS 3
155
156 /*
157 * SIGTRAP si_codes
158 */
159 #define TRAP_BRKPT (__SI_FAULT|1) /* process breakpoint */
160 #define TRAP_TRACE (__SI_FAULT|2) /* process trace trap */
161 #define NSIGTRAP 2
162
163 /*
164 * SIGCHLD si_codes
165 */
166 #define CLD_EXITED (__SI_CHLD|1) /* child has exited */
167 #define CLD_KILLED (__SI_CHLD|2) /* child was killed */
168 #define CLD_DUMPED (__SI_CHLD|3) /* child terminated abnormally */
169 #define CLD_TRAPPED (__SI_CHLD|4) /* traced child has trapped */
170 #define CLD_STOPPED (__SI_CHLD|5) /* child has stopped */
171 #define CLD_CONTINUED (__SI_CHLD|6) /* stopped child has continued */
172 #define NSIGCHLD 6
173
174 /*
175 * SIGPOLL si_codes
176 */
177 #define POLL_IN (__SI_POLL|1) /* data input available */
178 #define POLL_OUT (__SI_POLL|2) /* output buffers available */
179 #define POLL_MSG (__SI_POLL|3) /* input message available */
180 #define POLL_ERR (__SI_POLL|4) /* i/o error */
181 #define POLL_PRI (__SI_POLL|5) /* high priority input available */
182 #define POLL_HUP (__SI_POLL|6) /* device disconnected */
183 #define NSIGPOLL 6
184
185 /*
186 * sigevent definitions
187 *
188 * It seems likely that SIGEV_THREAD will have to be handled from
189 * userspace, libpthread transmuting it to SIGEV_SIGNAL, which the
190 * thread manager then catches and does the appropriate nonsense.
191 * However, everything is written out here so as to not get lost.
192 */
193 #define SIGEV_SIGNAL 0 /* notify via signal */
194 #define SIGEV_NONE 1 /* other notification: meaningless */
195 #define SIGEV_THREAD 2 /* deliver via thread creation */
196
197 #define SIGEV_MAX_SIZE 64
198 #define SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3)
199
200 typedef struct sigevent {
201 sigval_t sigev_value;
202 int sigev_signo;
203 int sigev_notify;
204 union {
205 int _pad[SIGEV_PAD_SIZE];
206
207 struct {
208 void (*_function)(sigval_t);
209 void *_attribute; /* really pthread_attr_t */
210 } _sigev_thread;
211 } _sigev_un;
212 } sigevent_t;
213
214 #define sigev_notify_function _sigev_un._sigev_thread._function
215 #define sigev_notify_attributes _sigev_un._sigev_thread._attribute
216
217 #ifdef __KERNEL__
218 #include <linux/string.h>
219
copy_siginfo(siginfo_t * to,siginfo_t * from)220 static inline void copy_siginfo(siginfo_t *to, siginfo_t *from)
221 {
222 if (from->si_code < 0)
223 memcpy(to, from, sizeof(siginfo_t));
224 else
225 /* _sigchld is currently the largest know union member */
226 memcpy(to, from, 3*sizeof(int) + sizeof(from->_sifields._sigchld));
227 }
228
229 extern int copy_siginfo_to_user(siginfo_t *to, siginfo_t *from);
230
231 #endif /* __KERNEL__ */
232
233 #endif
234