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