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 8typedef 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 32union __sifields { 33 /* kill() */ 34 struct { 35 __kernel_pid_t _pid; /* sender's pid */ 36 __kernel_uid32_t _uid; /* sender's uid */ 37 } _kill; 38 39 /* POSIX.1b timers */ 40 struct { 41 __kernel_timer_t _tid; /* timer id */ 42 int _overrun; /* overrun count */ 43 sigval_t _sigval; /* same as below */ 44 int _sys_private; /* not to be passed to user */ 45 } _timer; 46 47 /* POSIX.1b signals */ 48 struct { 49 __kernel_pid_t _pid; /* sender's pid */ 50 __kernel_uid32_t _uid; /* sender's uid */ 51 sigval_t _sigval; 52 } _rt; 53 54 /* SIGCHLD */ 55 struct { 56 __kernel_pid_t _pid; /* which child */ 57 __kernel_uid32_t _uid; /* sender's uid */ 58 int _status; /* exit code */ 59 __ARCH_SI_CLOCK_T _utime; 60 __ARCH_SI_CLOCK_T _stime; 61 } _sigchld; 62 63 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGTRAP, SIGEMT */ 64 struct { 65 void __user *_addr; /* faulting insn/memory ref. */ 66#ifdef __ARCH_SI_TRAPNO 67 int _trapno; /* TRAP # which caused the signal */ 68#endif 69#ifdef __ia64__ 70 int _imm; /* immediate value for "break" */ 71 unsigned int _flags; /* see ia64 si_flags */ 72 unsigned long _isr; /* isr */ 73#endif 74 75#define __ADDR_BND_PKEY_PAD (__alignof__(void *) < sizeof(short) ? \ 76 sizeof(short) : __alignof__(void *)) 77 union { 78 /* 79 * used when si_code=BUS_MCEERR_AR or 80 * used when si_code=BUS_MCEERR_AO 81 */ 82 short _addr_lsb; /* LSB of the reported address */ 83 /* used when si_code=SEGV_BNDERR */ 84 struct { 85 char _dummy_bnd[__ADDR_BND_PKEY_PAD]; 86 void __user *_lower; 87 void __user *_upper; 88 } _addr_bnd; 89 /* used when si_code=SEGV_PKUERR */ 90 struct { 91 char _dummy_pkey[__ADDR_BND_PKEY_PAD]; 92 __u32 _pkey; 93 } _addr_pkey; 94 }; 95 } _sigfault; 96 97 /* SIGPOLL */ 98 struct { 99 __ARCH_SI_BAND_T _band; /* POLL_IN, POLL_OUT, POLL_MSG */ 100 int _fd; 101 } _sigpoll; 102 103 /* SIGSYS */ 104 struct { 105 void __user *_call_addr; /* calling user insn */ 106 int _syscall; /* triggering system call number */ 107 unsigned int _arch; /* AUDIT_ARCH_* of syscall */ 108 } _sigsys; 109}; 110 111#ifndef __ARCH_HAS_SWAPPED_SIGINFO 112#define __SIGINFO \ 113struct { \ 114 int si_signo; \ 115 int si_errno; \ 116 int si_code; \ 117 union __sifields _sifields; \ 118} 119#else 120#define __SIGINFO \ 121struct { \ 122 int si_signo; \ 123 int si_code; \ 124 int si_errno; \ 125 union __sifields _sifields; \ 126} 127#endif /* __ARCH_HAS_SWAPPED_SIGINFO */ 128 129typedef struct siginfo { 130 union { 131 __SIGINFO; 132 int _si_pad[SI_MAX_SIZE/sizeof(int)]; 133 }; 134} __ARCH_SI_ATTRIBUTES siginfo_t; 135 136/* 137 * How these fields are to be accessed. 138 */ 139#define si_pid _sifields._kill._pid 140#define si_uid _sifields._kill._uid 141#define si_tid _sifields._timer._tid 142#define si_overrun _sifields._timer._overrun 143#define si_sys_private _sifields._timer._sys_private 144#define si_status _sifields._sigchld._status 145#define si_utime _sifields._sigchld._utime 146#define si_stime _sifields._sigchld._stime 147#define si_value _sifields._rt._sigval 148#define si_int _sifields._rt._sigval.sival_int 149#define si_ptr _sifields._rt._sigval.sival_ptr 150#define si_addr _sifields._sigfault._addr 151#ifdef __ARCH_SI_TRAPNO 152#define si_trapno _sifields._sigfault._trapno 153#endif 154#define si_addr_lsb _sifields._sigfault._addr_lsb 155#define si_lower _sifields._sigfault._addr_bnd._lower 156#define si_upper _sifields._sigfault._addr_bnd._upper 157#define si_pkey _sifields._sigfault._addr_pkey._pkey 158#define si_band _sifields._sigpoll._band 159#define si_fd _sifields._sigpoll._fd 160#define si_call_addr _sifields._sigsys._call_addr 161#define si_syscall _sifields._sigsys._syscall 162#define si_arch _sifields._sigsys._arch 163 164/* 165 * si_code values 166 * Digital reserves positive values for kernel-generated signals. 167 */ 168#define SI_USER 0 /* sent by kill, sigsend, raise */ 169#define SI_KERNEL 0x80 /* sent by the kernel from somewhere */ 170#define SI_QUEUE -1 /* sent by sigqueue */ 171#define SI_TIMER -2 /* sent by timer expiration */ 172#define SI_MESGQ -3 /* sent by real time mesq state change */ 173#define SI_ASYNCIO -4 /* sent by AIO completion */ 174#define SI_SIGIO -5 /* sent by queued SIGIO */ 175#define SI_TKILL -6 /* sent by tkill system call */ 176#define SI_DETHREAD -7 /* sent by execve() killing subsidiary threads */ 177#define SI_ASYNCNL -60 /* sent by glibc async name lookup completion */ 178 179#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0) 180#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0) 181 182/* 183 * SIGILL si_codes 184 */ 185#define ILL_ILLOPC 1 /* illegal opcode */ 186#define ILL_ILLOPN 2 /* illegal operand */ 187#define ILL_ILLADR 3 /* illegal addressing mode */ 188#define ILL_ILLTRP 4 /* illegal trap */ 189#define ILL_PRVOPC 5 /* privileged opcode */ 190#define ILL_PRVREG 6 /* privileged register */ 191#define ILL_COPROC 7 /* coprocessor error */ 192#define ILL_BADSTK 8 /* internal stack error */ 193#define ILL_BADIADDR 9 /* unimplemented instruction address */ 194#define __ILL_BREAK 10 /* illegal break */ 195#define __ILL_BNDMOD 11 /* bundle-update (modification) in progress */ 196#define NSIGILL 11 197 198/* 199 * SIGFPE si_codes 200 */ 201#define FPE_INTDIV 1 /* integer divide by zero */ 202#define FPE_INTOVF 2 /* integer overflow */ 203#define FPE_FLTDIV 3 /* floating point divide by zero */ 204#define FPE_FLTOVF 4 /* floating point overflow */ 205#define FPE_FLTUND 5 /* floating point underflow */ 206#define FPE_FLTRES 6 /* floating point inexact result */ 207#define FPE_FLTINV 7 /* floating point invalid operation */ 208#define FPE_FLTSUB 8 /* subscript out of range */ 209#define __FPE_DECOVF 9 /* decimal overflow */ 210#define __FPE_DECDIV 10 /* decimal division by zero */ 211#define __FPE_DECERR 11 /* packed decimal error */ 212#define __FPE_INVASC 12 /* invalid ASCII digit */ 213#define __FPE_INVDEC 13 /* invalid decimal digit */ 214#define FPE_FLTUNK 14 /* undiagnosed floating-point exception */ 215#define FPE_CONDTRAP 15 /* trap on condition */ 216#define NSIGFPE 15 217 218/* 219 * SIGSEGV si_codes 220 */ 221#define SEGV_MAPERR 1 /* address not mapped to object */ 222#define SEGV_ACCERR 2 /* invalid permissions for mapped object */ 223#define SEGV_BNDERR 3 /* failed address bound checks */ 224#ifdef __ia64__ 225# define __SEGV_PSTKOVF 4 /* paragraph stack overflow */ 226#else 227# define SEGV_PKUERR 4 /* failed protection key checks */ 228#endif 229#define SEGV_ACCADI 5 /* ADI not enabled for mapped object */ 230#define SEGV_ADIDERR 6 /* Disrupting MCD error */ 231#define SEGV_ADIPERR 7 /* Precise MCD exception */ 232#define SEGV_MTEAERR 8 /* Asynchronous ARM MTE error */ 233#define SEGV_MTESERR 9 /* Synchronous ARM MTE exception */ 234#define NSIGSEGV 9 235 236/* 237 * SIGBUS si_codes 238 */ 239#define BUS_ADRALN 1 /* invalid address alignment */ 240#define BUS_ADRERR 2 /* non-existent physical address */ 241#define BUS_OBJERR 3 /* object specific hardware error */ 242/* hardware memory error consumed on a machine check: action required */ 243#define BUS_MCEERR_AR 4 244/* hardware memory error detected in process but not consumed: action optional*/ 245#define BUS_MCEERR_AO 5 246#define NSIGBUS 5 247 248/* 249 * SIGTRAP si_codes 250 */ 251#define TRAP_BRKPT 1 /* process breakpoint */ 252#define TRAP_TRACE 2 /* process trace trap */ 253#define TRAP_BRANCH 3 /* process taken branch trap */ 254#define TRAP_HWBKPT 4 /* hardware breakpoint/watchpoint */ 255#define TRAP_UNK 5 /* undiagnosed trap */ 256#define NSIGTRAP 5 257 258/* 259 * There is an additional set of SIGTRAP si_codes used by ptrace 260 * that are of the form: ((PTRACE_EVENT_XXX << 8) | SIGTRAP) 261 */ 262 263/* 264 * SIGCHLD si_codes 265 */ 266#define CLD_EXITED 1 /* child has exited */ 267#define CLD_KILLED 2 /* child was killed */ 268#define CLD_DUMPED 3 /* child terminated abnormally */ 269#define CLD_TRAPPED 4 /* traced child has trapped */ 270#define CLD_STOPPED 5 /* child has stopped */ 271#define CLD_CONTINUED 6 /* stopped child has continued */ 272#define NSIGCHLD 6 273 274/* 275 * SIGPOLL (or any other signal without signal specific si_codes) si_codes 276 */ 277#define POLL_IN 1 /* data input available */ 278#define POLL_OUT 2 /* output buffers available */ 279#define POLL_MSG 3 /* input message available */ 280#define POLL_ERR 4 /* i/o error */ 281#define POLL_PRI 5 /* high priority input available */ 282#define POLL_HUP 6 /* device disconnected */ 283#define NSIGPOLL 6 284 285/* 286 * SIGSYS si_codes 287 */ 288#define SYS_SECCOMP 1 /* seccomp triggered */ 289#define NSIGSYS 1 290 291/* 292 * SIGEMT si_codes 293 */ 294#define EMT_TAGOVF 1 /* tag overflow */ 295#define NSIGEMT 1 296 297/* 298 * sigevent definitions 299 * 300 * It seems likely that SIGEV_THREAD will have to be handled from 301 * userspace, libpthread transmuting it to SIGEV_SIGNAL, which the 302 * thread manager then catches and does the appropriate nonsense. 303 * However, everything is written out here so as to not get lost. 304 */ 305#define SIGEV_SIGNAL 0 /* notify via signal */ 306#define SIGEV_NONE 1 /* other notification: meaningless */ 307#define SIGEV_THREAD 2 /* deliver via thread creation */ 308#define SIGEV_THREAD_ID 4 /* deliver to thread */ 309 310/* 311 * This works because the alignment is ok on all current architectures 312 * but we leave open this being overridden in the future 313 */ 314#ifndef __ARCH_SIGEV_PREAMBLE_SIZE 315#define __ARCH_SIGEV_PREAMBLE_SIZE (sizeof(int) * 2 + sizeof(sigval_t)) 316#endif 317 318#define SIGEV_MAX_SIZE 64 319#define SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE - __ARCH_SIGEV_PREAMBLE_SIZE) \ 320 / sizeof(int)) 321 322typedef struct sigevent { 323 sigval_t sigev_value; 324 int sigev_signo; 325 int sigev_notify; 326 union { 327 int _pad[SIGEV_PAD_SIZE]; 328 int _tid; 329 330 struct { 331 void (*_function)(sigval_t); 332 void *_attribute; /* really pthread_attr_t */ 333 } _sigev_thread; 334 } _sigev_un; 335} sigevent_t; 336 337#define sigev_notify_function _sigev_un._sigev_thread._function 338#define sigev_notify_attributes _sigev_un._sigev_thread._attribute 339#define sigev_notify_thread_id _sigev_un._tid 340 341 342#endif /* _UAPI_ASM_GENERIC_SIGINFO_H */ 343