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 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 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#ifndef __KERNEL__ 155#define __SI_KILL 0 156#define __SI_TIMER 0 157#define __SI_POLL 0 158#define __SI_FAULT 0 159#define __SI_CHLD 0 160#define __SI_RT 0 161#define __SI_MESGQ 0 162#define __SI_SYS 0 163#define __SI_CODE(T,N) (N) 164#endif 165 166/* 167 * si_code values 168 * Digital reserves positive values for kernel-generated signals. 169 */ 170#define SI_USER 0 /* sent by kill, sigsend, raise */ 171#define SI_KERNEL 0x80 /* sent by the kernel from somewhere */ 172#define SI_QUEUE -1 /* sent by sigqueue */ 173#define SI_TIMER __SI_CODE(__SI_TIMER,-2) /* sent by timer expiration */ 174#define SI_MESGQ __SI_CODE(__SI_MESGQ,-3) /* sent by real time mesq state change */ 175#define SI_ASYNCIO -4 /* sent by AIO completion */ 176#define SI_SIGIO -5 /* sent by queued SIGIO */ 177#define SI_TKILL -6 /* sent by tkill system call */ 178#define SI_DETHREAD -7 /* sent by execve() killing subsidiary threads */ 179 180#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0) 181#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0) 182 183/* 184 * SIGILL si_codes 185 */ 186#define ILL_ILLOPC (__SI_FAULT|1) /* illegal opcode */ 187#define ILL_ILLOPN (__SI_FAULT|2) /* illegal operand */ 188#define ILL_ILLADR (__SI_FAULT|3) /* illegal addressing mode */ 189#define ILL_ILLTRP (__SI_FAULT|4) /* illegal trap */ 190#define ILL_PRVOPC (__SI_FAULT|5) /* privileged opcode */ 191#define ILL_PRVREG (__SI_FAULT|6) /* privileged register */ 192#define ILL_COPROC (__SI_FAULT|7) /* coprocessor error */ 193#define ILL_BADSTK (__SI_FAULT|8) /* internal stack error */ 194#define NSIGILL 8 195 196/* 197 * SIGFPE si_codes 198 */ 199#define FPE_INTDIV (__SI_FAULT|1) /* integer divide by zero */ 200#define FPE_INTOVF (__SI_FAULT|2) /* integer overflow */ 201#define FPE_FLTDIV (__SI_FAULT|3) /* floating point divide by zero */ 202#define FPE_FLTOVF (__SI_FAULT|4) /* floating point overflow */ 203#define FPE_FLTUND (__SI_FAULT|5) /* floating point underflow */ 204#define FPE_FLTRES (__SI_FAULT|6) /* floating point inexact result */ 205#define FPE_FLTINV (__SI_FAULT|7) /* floating point invalid operation */ 206#define FPE_FLTSUB (__SI_FAULT|8) /* subscript out of range */ 207#define NSIGFPE 8 208 209/* 210 * SIGSEGV si_codes 211 */ 212#define SEGV_MAPERR (__SI_FAULT|1) /* address not mapped to object */ 213#define SEGV_ACCERR (__SI_FAULT|2) /* invalid permissions for mapped object */ 214#define SEGV_BNDERR (__SI_FAULT|3) /* failed address bound checks */ 215#define SEGV_PKUERR (__SI_FAULT|4) /* failed protection key checks */ 216#define NSIGSEGV 4 217 218/* 219 * SIGBUS si_codes 220 */ 221#define BUS_ADRALN (__SI_FAULT|1) /* invalid address alignment */ 222#define BUS_ADRERR (__SI_FAULT|2) /* non-existent physical address */ 223#define BUS_OBJERR (__SI_FAULT|3) /* object specific hardware error */ 224/* hardware memory error consumed on a machine check: action required */ 225#define BUS_MCEERR_AR (__SI_FAULT|4) 226/* hardware memory error detected in process but not consumed: action optional*/ 227#define BUS_MCEERR_AO (__SI_FAULT|5) 228#define NSIGBUS 5 229 230/* 231 * SIGTRAP si_codes 232 */ 233#define TRAP_BRKPT (__SI_FAULT|1) /* process breakpoint */ 234#define TRAP_TRACE (__SI_FAULT|2) /* process trace trap */ 235#define TRAP_BRANCH (__SI_FAULT|3) /* process taken branch trap */ 236#define TRAP_HWBKPT (__SI_FAULT|4) /* hardware breakpoint/watchpoint */ 237#define NSIGTRAP 4 238 239/* 240 * SIGCHLD si_codes 241 */ 242#define CLD_EXITED (__SI_CHLD|1) /* child has exited */ 243#define CLD_KILLED (__SI_CHLD|2) /* child was killed */ 244#define CLD_DUMPED (__SI_CHLD|3) /* child terminated abnormally */ 245#define CLD_TRAPPED (__SI_CHLD|4) /* traced child has trapped */ 246#define CLD_STOPPED (__SI_CHLD|5) /* child has stopped */ 247#define CLD_CONTINUED (__SI_CHLD|6) /* stopped child has continued */ 248#define NSIGCHLD 6 249 250/* 251 * SIGPOLL si_codes 252 */ 253#define POLL_IN (__SI_POLL|1) /* data input available */ 254#define POLL_OUT (__SI_POLL|2) /* output buffers available */ 255#define POLL_MSG (__SI_POLL|3) /* input message available */ 256#define POLL_ERR (__SI_POLL|4) /* i/o error */ 257#define POLL_PRI (__SI_POLL|5) /* high priority input available */ 258#define POLL_HUP (__SI_POLL|6) /* device disconnected */ 259#define NSIGPOLL 6 260 261/* 262 * SIGSYS si_codes 263 */ 264#define SYS_SECCOMP (__SI_SYS|1) /* seccomp triggered */ 265#define NSIGSYS 1 266 267/* 268 * sigevent definitions 269 * 270 * It seems likely that SIGEV_THREAD will have to be handled from 271 * userspace, libpthread transmuting it to SIGEV_SIGNAL, which the 272 * thread manager then catches and does the appropriate nonsense. 273 * However, everything is written out here so as to not get lost. 274 */ 275#define SIGEV_SIGNAL 0 /* notify via signal */ 276#define SIGEV_NONE 1 /* other notification: meaningless */ 277#define SIGEV_THREAD 2 /* deliver via thread creation */ 278#define SIGEV_THREAD_ID 4 /* deliver to thread */ 279 280/* 281 * This works because the alignment is ok on all current architectures 282 * but we leave open this being overridden in the future 283 */ 284#ifndef __ARCH_SIGEV_PREAMBLE_SIZE 285#define __ARCH_SIGEV_PREAMBLE_SIZE (sizeof(int) * 2 + sizeof(sigval_t)) 286#endif 287 288#define SIGEV_MAX_SIZE 64 289#define SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE - __ARCH_SIGEV_PREAMBLE_SIZE) \ 290 / sizeof(int)) 291 292typedef struct sigevent { 293 sigval_t sigev_value; 294 int sigev_signo; 295 int sigev_notify; 296 union { 297 int _pad[SIGEV_PAD_SIZE]; 298 int _tid; 299 300 struct { 301 void (*_function)(sigval_t); 302 void *_attribute; /* really pthread_attr_t */ 303 } _sigev_thread; 304 } _sigev_un; 305} sigevent_t; 306 307#define sigev_notify_function _sigev_un._sigev_thread._function 308#define sigev_notify_attributes _sigev_un._sigev_thread._attribute 309#define sigev_notify_thread_id _sigev_un._tid 310 311 312#endif /* _UAPI_ASM_GENERIC_SIGINFO_H */ 313