1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
2 | #ifndef _UAPI_ASM_GENERIC_SIGINFO_H |
3 | #define _UAPI_ASM_GENERIC_SIGINFO_H |
4 | |
5 | #include <linux/compiler.h> |
6 | #include <linux/types.h> |
7 | |
8 | typedef union sigval { |
9 | int sival_int; |
10 | void __user *sival_ptr; |
11 | } sigval_t; |
12 | |
13 | #define SI_MAX_SIZE 128 |
14 | |
15 | /* |
16 | * The default "si_band" type is "long", as specified by POSIX. |
17 | * However, some architectures want to override this to "int" |
18 | * for historical compatibility reasons, so we allow that. |
19 | */ |
20 | #ifndef __ARCH_SI_BAND_T |
21 | #define __ARCH_SI_BAND_T long |
22 | #endif |
23 | |
24 | #ifndef __ARCH_SI_CLOCK_T |
25 | #define __ARCH_SI_CLOCK_T __kernel_clock_t |
26 | #endif |
27 | |
28 | #ifndef __ARCH_SI_ATTRIBUTES |
29 | #define __ARCH_SI_ATTRIBUTES |
30 | #endif |
31 | |
32 | /* |
33 | * Be careful when extending this union. On 32bit siginfo_t is 32bit |
34 | * aligned. Which means that a 64bit field or any other field that |
35 | * would increase the alignment of siginfo_t will break the ABI. |
36 | */ |
37 | union __sifields { |
38 | /* kill() */ |
39 | struct { |
40 | __kernel_pid_t _pid; /* sender's pid */ |
41 | __kernel_uid32_t _uid; /* sender's uid */ |
42 | } _kill; |
43 | |
44 | /* POSIX.1b timers */ |
45 | struct { |
46 | __kernel_timer_t _tid; /* timer id */ |
47 | int _overrun; /* overrun count */ |
48 | sigval_t _sigval; /* same as below */ |
49 | int _sys_private; /* not to be passed to user */ |
50 | } _timer; |
51 | |
52 | /* POSIX.1b signals */ |
53 | struct { |
54 | __kernel_pid_t _pid; /* sender's pid */ |
55 | __kernel_uid32_t _uid; /* sender's uid */ |
56 | sigval_t _sigval; |
57 | } _rt; |
58 | |
59 | /* SIGCHLD */ |
60 | struct { |
61 | __kernel_pid_t _pid; /* which child */ |
62 | __kernel_uid32_t _uid; /* sender's uid */ |
63 | int _status; /* exit code */ |
64 | __ARCH_SI_CLOCK_T _utime; |
65 | __ARCH_SI_CLOCK_T _stime; |
66 | } _sigchld; |
67 | |
68 | /* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGTRAP, SIGEMT */ |
69 | struct { |
70 | void __user *_addr; /* faulting insn/memory ref. */ |
71 | |
72 | #define __ADDR_BND_PKEY_PAD (__alignof__(void *) < sizeof(short) ? \ |
73 | sizeof(short) : __alignof__(void *)) |
74 | union { |
75 | /* used on alpha and sparc */ |
76 | int _trapno; /* TRAP # which caused the signal */ |
77 | /* |
78 | * used when si_code=BUS_MCEERR_AR or |
79 | * used when si_code=BUS_MCEERR_AO |
80 | */ |
81 | short _addr_lsb; /* LSB of the reported address */ |
82 | /* used when si_code=SEGV_BNDERR */ |
83 | struct { |
84 | char _dummy_bnd[__ADDR_BND_PKEY_PAD]; |
85 | void __user *_lower; |
86 | void __user *_upper; |
87 | } _addr_bnd; |
88 | /* used when si_code=SEGV_PKUERR */ |
89 | struct { |
90 | char _dummy_pkey[__ADDR_BND_PKEY_PAD]; |
91 | __u32 _pkey; |
92 | } _addr_pkey; |
93 | /* used when si_code=TRAP_PERF */ |
94 | struct { |
95 | unsigned long _data; |
96 | __u32 _type; |
97 | __u32 _flags; |
98 | } _perf; |
99 | }; |
100 | } _sigfault; |
101 | |
102 | /* SIGPOLL */ |
103 | struct { |
104 | __ARCH_SI_BAND_T _band; /* POLL_IN, POLL_OUT, POLL_MSG */ |
105 | int _fd; |
106 | } _sigpoll; |
107 | |
108 | /* SIGSYS */ |
109 | struct { |
110 | void __user *_call_addr; /* calling user insn */ |
111 | int _syscall; /* triggering system call number */ |
112 | unsigned int _arch; /* AUDIT_ARCH_* of syscall */ |
113 | } _sigsys; |
114 | }; |
115 | |
116 | #ifndef __ARCH_HAS_SWAPPED_SIGINFO |
117 | #define __SIGINFO \ |
118 | struct { \ |
119 | int si_signo; \ |
120 | int si_errno; \ |
121 | int si_code; \ |
122 | union __sifields _sifields; \ |
123 | } |
124 | #else |
125 | #define __SIGINFO \ |
126 | struct { \ |
127 | int si_signo; \ |
128 | int si_code; \ |
129 | int si_errno; \ |
130 | union __sifields _sifields; \ |
131 | } |
132 | #endif /* __ARCH_HAS_SWAPPED_SIGINFO */ |
133 | |
134 | typedef struct siginfo { |
135 | union { |
136 | __SIGINFO; |
137 | int _si_pad[SI_MAX_SIZE/sizeof(int)]; |
138 | }; |
139 | } __ARCH_SI_ATTRIBUTES siginfo_t; |
140 | |
141 | /* |
142 | * How these fields are to be accessed. |
143 | */ |
144 | #define si_pid _sifields._kill._pid |
145 | #define si_uid _sifields._kill._uid |
146 | #define si_tid _sifields._timer._tid |
147 | #define si_overrun _sifields._timer._overrun |
148 | #define si_sys_private _sifields._timer._sys_private |
149 | #define si_status _sifields._sigchld._status |
150 | #define si_utime _sifields._sigchld._utime |
151 | #define si_stime _sifields._sigchld._stime |
152 | #define si_value _sifields._rt._sigval |
153 | #define si_int _sifields._rt._sigval.sival_int |
154 | #define si_ptr _sifields._rt._sigval.sival_ptr |
155 | #define si_addr _sifields._sigfault._addr |
156 | #define si_trapno _sifields._sigfault._trapno |
157 | #define si_addr_lsb _sifields._sigfault._addr_lsb |
158 | #define si_lower _sifields._sigfault._addr_bnd._lower |
159 | #define si_upper _sifields._sigfault._addr_bnd._upper |
160 | #define si_pkey _sifields._sigfault._addr_pkey._pkey |
161 | #define si_perf_data _sifields._sigfault._perf._data |
162 | #define si_perf_type _sifields._sigfault._perf._type |
163 | #define si_perf_flags _sifields._sigfault._perf._flags |
164 | #define si_band _sifields._sigpoll._band |
165 | #define si_fd _sifields._sigpoll._fd |
166 | #define si_call_addr _sifields._sigsys._call_addr |
167 | #define si_syscall _sifields._sigsys._syscall |
168 | #define si_arch _sifields._sigsys._arch |
169 | |
170 | /* |
171 | * si_code values |
172 | * Digital reserves positive values for kernel-generated signals. |
173 | */ |
174 | #define SI_USER 0 /* sent by kill, sigsend, raise */ |
175 | #define SI_KERNEL 0x80 /* sent by the kernel from somewhere */ |
176 | #define SI_QUEUE -1 /* sent by sigqueue */ |
177 | #define SI_TIMER -2 /* sent by timer expiration */ |
178 | #define SI_MESGQ -3 /* sent by real time mesq state change */ |
179 | #define SI_ASYNCIO -4 /* sent by AIO completion */ |
180 | #define SI_SIGIO -5 /* sent by queued SIGIO */ |
181 | #define SI_TKILL -6 /* sent by tkill system call */ |
182 | #define SI_DETHREAD -7 /* sent by execve() killing subsidiary threads */ |
183 | #define SI_ASYNCNL -60 /* sent by glibc async name lookup completion */ |
184 | |
185 | #define SI_FROMUSER(siptr) ((siptr)->si_code <= 0) |
186 | #define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0) |
187 | |
188 | /* |
189 | * SIGILL si_codes |
190 | */ |
191 | #define ILL_ILLOPC 1 /* illegal opcode */ |
192 | #define ILL_ILLOPN 2 /* illegal operand */ |
193 | #define ILL_ILLADR 3 /* illegal addressing mode */ |
194 | #define ILL_ILLTRP 4 /* illegal trap */ |
195 | #define ILL_PRVOPC 5 /* privileged opcode */ |
196 | #define ILL_PRVREG 6 /* privileged register */ |
197 | #define ILL_COPROC 7 /* coprocessor error */ |
198 | #define ILL_BADSTK 8 /* internal stack error */ |
199 | #define ILL_BADIADDR 9 /* unimplemented instruction address */ |
200 | #define __ILL_BREAK 10 /* illegal break */ |
201 | #define __ILL_BNDMOD 11 /* bundle-update (modification) in progress */ |
202 | #define NSIGILL 11 |
203 | |
204 | /* |
205 | * SIGFPE si_codes |
206 | */ |
207 | #define FPE_INTDIV 1 /* integer divide by zero */ |
208 | #define FPE_INTOVF 2 /* integer overflow */ |
209 | #define FPE_FLTDIV 3 /* floating point divide by zero */ |
210 | #define FPE_FLTOVF 4 /* floating point overflow */ |
211 | #define FPE_FLTUND 5 /* floating point underflow */ |
212 | #define FPE_FLTRES 6 /* floating point inexact result */ |
213 | #define FPE_FLTINV 7 /* floating point invalid operation */ |
214 | #define FPE_FLTSUB 8 /* subscript out of range */ |
215 | #define __FPE_DECOVF 9 /* decimal overflow */ |
216 | #define __FPE_DECDIV 10 /* decimal division by zero */ |
217 | #define __FPE_DECERR 11 /* packed decimal error */ |
218 | #define __FPE_INVASC 12 /* invalid ASCII digit */ |
219 | #define __FPE_INVDEC 13 /* invalid decimal digit */ |
220 | #define FPE_FLTUNK 14 /* undiagnosed floating-point exception */ |
221 | #define FPE_CONDTRAP 15 /* trap on condition */ |
222 | #define NSIGFPE 15 |
223 | |
224 | /* |
225 | * SIGSEGV si_codes |
226 | */ |
227 | #define SEGV_MAPERR 1 /* address not mapped to object */ |
228 | #define SEGV_ACCERR 2 /* invalid permissions for mapped object */ |
229 | #define SEGV_BNDERR 3 /* failed address bound checks */ |
230 | #ifdef __ia64__ |
231 | # define __SEGV_PSTKOVF 4 /* paragraph stack overflow */ |
232 | #else |
233 | # define SEGV_PKUERR 4 /* failed protection key checks */ |
234 | #endif |
235 | #define SEGV_ACCADI 5 /* ADI not enabled for mapped object */ |
236 | #define SEGV_ADIDERR 6 /* Disrupting MCD error */ |
237 | #define SEGV_ADIPERR 7 /* Precise MCD exception */ |
238 | #define SEGV_MTEAERR 8 /* Asynchronous ARM MTE error */ |
239 | #define SEGV_MTESERR 9 /* Synchronous ARM MTE exception */ |
240 | #define SEGV_CPERR 10 /* Control protection fault */ |
241 | #define NSIGSEGV 10 |
242 | |
243 | /* |
244 | * SIGBUS si_codes |
245 | */ |
246 | #define BUS_ADRALN 1 /* invalid address alignment */ |
247 | #define BUS_ADRERR 2 /* non-existent physical address */ |
248 | #define BUS_OBJERR 3 /* object specific hardware error */ |
249 | /* hardware memory error consumed on a machine check: action required */ |
250 | #define BUS_MCEERR_AR 4 |
251 | /* hardware memory error detected in process but not consumed: action optional*/ |
252 | #define BUS_MCEERR_AO 5 |
253 | #define NSIGBUS 5 |
254 | |
255 | /* |
256 | * SIGTRAP si_codes |
257 | */ |
258 | #define TRAP_BRKPT 1 /* process breakpoint */ |
259 | #define TRAP_TRACE 2 /* process trace trap */ |
260 | #define TRAP_BRANCH 3 /* process taken branch trap */ |
261 | #define TRAP_HWBKPT 4 /* hardware breakpoint/watchpoint */ |
262 | #define TRAP_UNK 5 /* undiagnosed trap */ |
263 | #define TRAP_PERF 6 /* perf event with sigtrap=1 */ |
264 | #define NSIGTRAP 6 |
265 | |
266 | /* |
267 | * There is an additional set of SIGTRAP si_codes used by ptrace |
268 | * that are of the form: ((PTRACE_EVENT_XXX << 8) | SIGTRAP) |
269 | */ |
270 | |
271 | /* |
272 | * Flags for si_perf_flags if SIGTRAP si_code is TRAP_PERF. |
273 | */ |
274 | #define TRAP_PERF_FLAG_ASYNC (1u << 0) |
275 | |
276 | /* |
277 | * SIGCHLD si_codes |
278 | */ |
279 | #define CLD_EXITED 1 /* child has exited */ |
280 | #define CLD_KILLED 2 /* child was killed */ |
281 | #define CLD_DUMPED 3 /* child terminated abnormally */ |
282 | #define CLD_TRAPPED 4 /* traced child has trapped */ |
283 | #define CLD_STOPPED 5 /* child has stopped */ |
284 | #define CLD_CONTINUED 6 /* stopped child has continued */ |
285 | #define NSIGCHLD 6 |
286 | |
287 | /* |
288 | * SIGPOLL (or any other signal without signal specific si_codes) si_codes |
289 | */ |
290 | #define POLL_IN 1 /* data input available */ |
291 | #define POLL_OUT 2 /* output buffers available */ |
292 | #define POLL_MSG 3 /* input message available */ |
293 | #define POLL_ERR 4 /* i/o error */ |
294 | #define POLL_PRI 5 /* high priority input available */ |
295 | #define POLL_HUP 6 /* device disconnected */ |
296 | #define NSIGPOLL 6 |
297 | |
298 | /* |
299 | * SIGSYS si_codes |
300 | */ |
301 | #define SYS_SECCOMP 1 /* seccomp triggered */ |
302 | #define SYS_USER_DISPATCH 2 /* syscall user dispatch triggered */ |
303 | #define NSIGSYS 2 |
304 | |
305 | /* |
306 | * SIGEMT si_codes |
307 | */ |
308 | #define EMT_TAGOVF 1 /* tag overflow */ |
309 | #define NSIGEMT 1 |
310 | |
311 | /* |
312 | * sigevent definitions |
313 | * |
314 | * It seems likely that SIGEV_THREAD will have to be handled from |
315 | * userspace, libpthread transmuting it to SIGEV_SIGNAL, which the |
316 | * thread manager then catches and does the appropriate nonsense. |
317 | * However, everything is written out here so as to not get lost. |
318 | */ |
319 | #define SIGEV_SIGNAL 0 /* notify via signal */ |
320 | #define SIGEV_NONE 1 /* other notification: meaningless */ |
321 | #define SIGEV_THREAD 2 /* deliver via thread creation */ |
322 | #define SIGEV_THREAD_ID 4 /* deliver to thread */ |
323 | |
324 | /* |
325 | * This works because the alignment is ok on all current architectures |
326 | * but we leave open this being overridden in the future |
327 | */ |
328 | #ifndef __ARCH_SIGEV_PREAMBLE_SIZE |
329 | #define __ARCH_SIGEV_PREAMBLE_SIZE (sizeof(int) * 2 + sizeof(sigval_t)) |
330 | #endif |
331 | |
332 | #define SIGEV_MAX_SIZE 64 |
333 | #define SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE - __ARCH_SIGEV_PREAMBLE_SIZE) \ |
334 | / sizeof(int)) |
335 | |
336 | typedef struct sigevent { |
337 | sigval_t sigev_value; |
338 | int sigev_signo; |
339 | int sigev_notify; |
340 | union { |
341 | int _pad[SIGEV_PAD_SIZE]; |
342 | int _tid; |
343 | |
344 | struct { |
345 | void (*_function)(sigval_t); |
346 | void *_attribute; /* really pthread_attr_t */ |
347 | } _sigev_thread; |
348 | } _sigev_un; |
349 | } sigevent_t; |
350 | |
351 | #define sigev_notify_function _sigev_un._sigev_thread._function |
352 | #define sigev_notify_attributes _sigev_un._sigev_thread._attribute |
353 | #define sigev_notify_thread_id _sigev_un._tid |
354 | |
355 | |
356 | #endif /* _UAPI_ASM_GENERIC_SIGINFO_H */ |
357 | |