1 #ifndef _UAPI_ASM_GENERIC_SIGINFO_H
2 #define _UAPI_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	__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 
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 {
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 			union {
95 				/* used when si_code=SEGV_BNDERR */
96 				struct {
97 					void __user *_lower;
98 					void __user *_upper;
99 				} _addr_bnd;
100 				/* used when si_code=SEGV_PKUERR */
101 				__u32 _pkey;
102 			};
103 		} _sigfault;
104 
105 		/* SIGPOLL */
106 		struct {
107 			__ARCH_SI_BAND_T _band;	/* POLL_IN, POLL_OUT, POLL_MSG */
108 			int _fd;
109 		} _sigpoll;
110 
111 		/* SIGSYS */
112 		struct {
113 			void __user *_call_addr; /* calling user insn */
114 			int _syscall;	/* triggering system call number */
115 			unsigned int _arch;	/* AUDIT_ARCH_* of syscall */
116 		} _sigsys;
117 	} _sifields;
118 } __ARCH_SI_ATTRIBUTES siginfo_t;
119 
120 /* If the arch shares siginfo, then it has SIGSYS. */
121 #define __ARCH_SIGSYS
122 #endif
123 
124 /*
125  * How these fields are to be accessed.
126  */
127 #define si_pid		_sifields._kill._pid
128 #define si_uid		_sifields._kill._uid
129 #define si_tid		_sifields._timer._tid
130 #define si_overrun	_sifields._timer._overrun
131 #define si_sys_private  _sifields._timer._sys_private
132 #define si_status	_sifields._sigchld._status
133 #define si_utime	_sifields._sigchld._utime
134 #define si_stime	_sifields._sigchld._stime
135 #define si_value	_sifields._rt._sigval
136 #define si_int		_sifields._rt._sigval.sival_int
137 #define si_ptr		_sifields._rt._sigval.sival_ptr
138 #define si_addr		_sifields._sigfault._addr
139 #ifdef __ARCH_SI_TRAPNO
140 #define si_trapno	_sifields._sigfault._trapno
141 #endif
142 #define si_addr_lsb	_sifields._sigfault._addr_lsb
143 #define si_lower	_sifields._sigfault._addr_bnd._lower
144 #define si_upper	_sifields._sigfault._addr_bnd._upper
145 #define si_pkey		_sifields._sigfault._pkey
146 #define si_band		_sifields._sigpoll._band
147 #define si_fd		_sifields._sigpoll._fd
148 #ifdef __ARCH_SIGSYS
149 #define si_call_addr	_sifields._sigsys._call_addr
150 #define si_syscall	_sifields._sigsys._syscall
151 #define si_arch		_sifields._sigsys._arch
152 #endif
153 
154 #ifdef __KERNEL__
155 #define __SI_MASK	0xffff0000u
156 #define __SI_KILL	(0 << 16)
157 #define __SI_TIMER	(1 << 16)
158 #define __SI_POLL	(2 << 16)
159 #define __SI_FAULT	(3 << 16)
160 #define __SI_CHLD	(4 << 16)
161 #define __SI_RT		(5 << 16)
162 #define __SI_MESGQ	(6 << 16)
163 #define __SI_SYS	(7 << 16)
164 #define __SI_CODE(T,N)	((T) | ((N) & 0xffff))
165 #else /* __KERNEL__ */
166 #define __SI_KILL	0
167 #define __SI_TIMER	0
168 #define __SI_POLL	0
169 #define __SI_FAULT	0
170 #define __SI_CHLD	0
171 #define __SI_RT		0
172 #define __SI_MESGQ	0
173 #define __SI_SYS	0
174 #define __SI_CODE(T,N)	(N)
175 #endif /* __KERNEL__ */
176 
177 /*
178  * si_code values
179  * Digital reserves positive values for kernel-generated signals.
180  */
181 #define SI_USER		0		/* sent by kill, sigsend, raise */
182 #define SI_KERNEL	0x80		/* sent by the kernel from somewhere */
183 #define SI_QUEUE	-1		/* sent by sigqueue */
184 #define SI_TIMER __SI_CODE(__SI_TIMER,-2) /* sent by timer expiration */
185 #define SI_MESGQ __SI_CODE(__SI_MESGQ,-3) /* sent by real time mesq state change */
186 #define SI_ASYNCIO	-4		/* sent by AIO completion */
187 #define SI_SIGIO	-5		/* sent by queued SIGIO */
188 #define SI_TKILL	-6		/* sent by tkill system call */
189 #define SI_DETHREAD	-7		/* sent by execve() killing subsidiary threads */
190 
191 #define SI_FROMUSER(siptr)	((siptr)->si_code <= 0)
192 #define SI_FROMKERNEL(siptr)	((siptr)->si_code > 0)
193 
194 /*
195  * SIGILL si_codes
196  */
197 #define ILL_ILLOPC	(__SI_FAULT|1)	/* illegal opcode */
198 #define ILL_ILLOPN	(__SI_FAULT|2)	/* illegal operand */
199 #define ILL_ILLADR	(__SI_FAULT|3)	/* illegal addressing mode */
200 #define ILL_ILLTRP	(__SI_FAULT|4)	/* illegal trap */
201 #define ILL_PRVOPC	(__SI_FAULT|5)	/* privileged opcode */
202 #define ILL_PRVREG	(__SI_FAULT|6)	/* privileged register */
203 #define ILL_COPROC	(__SI_FAULT|7)	/* coprocessor error */
204 #define ILL_BADSTK	(__SI_FAULT|8)	/* internal stack error */
205 #define NSIGILL		8
206 
207 /*
208  * SIGFPE si_codes
209  */
210 #define FPE_INTDIV	(__SI_FAULT|1)	/* integer divide by zero */
211 #define FPE_INTOVF	(__SI_FAULT|2)	/* integer overflow */
212 #define FPE_FLTDIV	(__SI_FAULT|3)	/* floating point divide by zero */
213 #define FPE_FLTOVF	(__SI_FAULT|4)	/* floating point overflow */
214 #define FPE_FLTUND	(__SI_FAULT|5)	/* floating point underflow */
215 #define FPE_FLTRES	(__SI_FAULT|6)	/* floating point inexact result */
216 #define FPE_FLTINV	(__SI_FAULT|7)	/* floating point invalid operation */
217 #define FPE_FLTSUB	(__SI_FAULT|8)	/* subscript out of range */
218 #define NSIGFPE		8
219 
220 /*
221  * SIGSEGV si_codes
222  */
223 #define SEGV_MAPERR	(__SI_FAULT|1)	/* address not mapped to object */
224 #define SEGV_ACCERR	(__SI_FAULT|2)	/* invalid permissions for mapped object */
225 #define SEGV_BNDERR	(__SI_FAULT|3)  /* failed address bound checks */
226 #define SEGV_PKUERR	(__SI_FAULT|4)  /* failed protection key checks */
227 #define NSIGSEGV	4
228 
229 /*
230  * SIGBUS si_codes
231  */
232 #define BUS_ADRALN	(__SI_FAULT|1)	/* invalid address alignment */
233 #define BUS_ADRERR	(__SI_FAULT|2)	/* non-existent physical address */
234 #define BUS_OBJERR	(__SI_FAULT|3)	/* object specific hardware error */
235 /* hardware memory error consumed on a machine check: action required */
236 #define BUS_MCEERR_AR	(__SI_FAULT|4)
237 /* hardware memory error detected in process but not consumed: action optional*/
238 #define BUS_MCEERR_AO	(__SI_FAULT|5)
239 #define NSIGBUS		5
240 
241 /*
242  * SIGTRAP si_codes
243  */
244 #define TRAP_BRKPT	(__SI_FAULT|1)	/* process breakpoint */
245 #define TRAP_TRACE	(__SI_FAULT|2)	/* process trace trap */
246 #define TRAP_BRANCH     (__SI_FAULT|3)  /* process taken branch trap */
247 #define TRAP_HWBKPT     (__SI_FAULT|4)  /* hardware breakpoint/watchpoint */
248 #define NSIGTRAP	4
249 
250 /*
251  * SIGCHLD si_codes
252  */
253 #define CLD_EXITED	(__SI_CHLD|1)	/* child has exited */
254 #define CLD_KILLED	(__SI_CHLD|2)	/* child was killed */
255 #define CLD_DUMPED	(__SI_CHLD|3)	/* child terminated abnormally */
256 #define CLD_TRAPPED	(__SI_CHLD|4)	/* traced child has trapped */
257 #define CLD_STOPPED	(__SI_CHLD|5)	/* child has stopped */
258 #define CLD_CONTINUED	(__SI_CHLD|6)	/* stopped child has continued */
259 #define NSIGCHLD	6
260 
261 /*
262  * SIGPOLL si_codes
263  */
264 #define POLL_IN		(__SI_POLL|1)	/* data input available */
265 #define POLL_OUT	(__SI_POLL|2)	/* output buffers available */
266 #define POLL_MSG	(__SI_POLL|3)	/* input message available */
267 #define POLL_ERR	(__SI_POLL|4)	/* i/o error */
268 #define POLL_PRI	(__SI_POLL|5)	/* high priority input available */
269 #define POLL_HUP	(__SI_POLL|6)	/* device disconnected */
270 #define NSIGPOLL	6
271 
272 /*
273  * SIGSYS si_codes
274  */
275 #define SYS_SECCOMP		(__SI_SYS|1)	/* seccomp triggered */
276 #define NSIGSYS	1
277 
278 /*
279  * sigevent definitions
280  *
281  * It seems likely that SIGEV_THREAD will have to be handled from
282  * userspace, libpthread transmuting it to SIGEV_SIGNAL, which the
283  * thread manager then catches and does the appropriate nonsense.
284  * However, everything is written out here so as to not get lost.
285  */
286 #define SIGEV_SIGNAL	0	/* notify via signal */
287 #define SIGEV_NONE	1	/* other notification: meaningless */
288 #define SIGEV_THREAD	2	/* deliver via thread creation */
289 #define SIGEV_THREAD_ID 4	/* deliver to thread */
290 
291 /*
292  * This works because the alignment is ok on all current architectures
293  * but we leave open this being overridden in the future
294  */
295 #ifndef __ARCH_SIGEV_PREAMBLE_SIZE
296 #define __ARCH_SIGEV_PREAMBLE_SIZE	(sizeof(int) * 2 + sizeof(sigval_t))
297 #endif
298 
299 #define SIGEV_MAX_SIZE	64
300 #define SIGEV_PAD_SIZE	((SIGEV_MAX_SIZE - __ARCH_SIGEV_PREAMBLE_SIZE) \
301 		/ sizeof(int))
302 
303 typedef struct sigevent {
304 	sigval_t sigev_value;
305 	int sigev_signo;
306 	int sigev_notify;
307 	union {
308 		int _pad[SIGEV_PAD_SIZE];
309 		 int _tid;
310 
311 		struct {
312 			void (*_function)(sigval_t);
313 			void *_attribute;	/* really pthread_attr_t */
314 		} _sigev_thread;
315 	} _sigev_un;
316 } sigevent_t;
317 
318 #define sigev_notify_function	_sigev_un._sigev_thread._function
319 #define sigev_notify_attributes	_sigev_un._sigev_thread._attribute
320 #define sigev_notify_thread_id	 _sigev_un._tid
321 
322 
323 #endif /* _UAPI_ASM_GENERIC_SIGINFO_H */
324