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