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/* 14 * This is the size (including padding) of the part of the 15 * struct siginfo that is before the union. 16 */ 17#ifndef __ARCH_SI_PREAMBLE_SIZE 18#define __ARCH_SI_PREAMBLE_SIZE (3 * sizeof(int)) 19#endif 20 21#define SI_MAX_SIZE 128 22#ifndef SI_PAD_SIZE 23#define SI_PAD_SIZE ((SI_MAX_SIZE - __ARCH_SI_PREAMBLE_SIZE) / sizeof(int)) 24#endif 25 26/* 27 * The default "si_band" type is "long", as specified by POSIX. 28 * However, some architectures want to override this to "int" 29 * for historical compatibility reasons, so we allow that. 30 */ 31#ifndef __ARCH_SI_BAND_T 32#define __ARCH_SI_BAND_T long 33#endif 34 35#ifndef __ARCH_SI_CLOCK_T 36#define __ARCH_SI_CLOCK_T __kernel_clock_t 37#endif 38 39#ifndef __ARCH_SI_ATTRIBUTES 40#define __ARCH_SI_ATTRIBUTES 41#endif 42 43typedef struct siginfo { 44 int si_signo; 45#ifndef __ARCH_HAS_SWAPPED_SIGINFO 46 int si_errno; 47 int si_code; 48#else 49 int si_code; 50 int si_errno; 51#endif 52 53 union { 54 int _pad[SI_PAD_SIZE]; 55 56 /* kill() */ 57 struct { 58 __kernel_pid_t _pid; /* sender's pid */ 59 __kernel_uid32_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 sigval_t _sigval; /* same as below */ 67 int _sys_private; /* not to be passed to user */ 68 } _timer; 69 70 /* POSIX.1b signals */ 71 struct { 72 __kernel_pid_t _pid; /* sender's pid */ 73 __kernel_uid32_t _uid; /* sender's uid */ 74 sigval_t _sigval; 75 } _rt; 76 77 /* SIGCHLD */ 78 struct { 79 __kernel_pid_t _pid; /* which child */ 80 __kernel_uid32_t _uid; /* sender's uid */ 81 int _status; /* exit code */ 82 __ARCH_SI_CLOCK_T _utime; 83 __ARCH_SI_CLOCK_T _stime; 84 } _sigchld; 85 86 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGTRAP, SIGEMT */ 87 struct { 88 void __user *_addr; /* faulting insn/memory ref. */ 89#ifdef __ARCH_SI_TRAPNO 90 int _trapno; /* TRAP # which caused the signal */ 91#endif 92#ifdef __ia64__ 93 int _imm; /* immediate value for "break" */ 94 unsigned int _flags; /* see ia64 si_flags */ 95 unsigned long _isr; /* isr */ 96#endif 97 98#define __ADDR_BND_PKEY_PAD (__alignof__(void *) < sizeof(short) ? \ 99 sizeof(short) : __alignof__(void *)) 100 union { 101 /* 102 * used when si_code=BUS_MCEERR_AR or 103 * used when si_code=BUS_MCEERR_AO 104 */ 105 short _addr_lsb; /* LSB of the reported address */ 106 /* used when si_code=SEGV_BNDERR */ 107 struct { 108 char _dummy_bnd[__ADDR_BND_PKEY_PAD]; 109 void __user *_lower; 110 void __user *_upper; 111 } _addr_bnd; 112 /* used when si_code=SEGV_PKUERR */ 113 struct { 114 char _dummy_pkey[__ADDR_BND_PKEY_PAD]; 115 __u32 _pkey; 116 } _addr_pkey; 117 }; 118 } _sigfault; 119 120 /* SIGPOLL */ 121 struct { 122 __ARCH_SI_BAND_T _band; /* POLL_IN, POLL_OUT, POLL_MSG */ 123 int _fd; 124 } _sigpoll; 125 126 /* SIGSYS */ 127 struct { 128 void __user *_call_addr; /* calling user insn */ 129 int _syscall; /* triggering system call number */ 130 unsigned int _arch; /* AUDIT_ARCH_* of syscall */ 131 } _sigsys; 132 } _sifields; 133} __ARCH_SI_ATTRIBUTES siginfo_t; 134 135/* 136 * How these fields are to be accessed. 137 */ 138#define si_pid _sifields._kill._pid 139#define si_uid _sifields._kill._uid 140#define si_tid _sifields._timer._tid 141#define si_overrun _sifields._timer._overrun 142#define si_sys_private _sifields._timer._sys_private 143#define si_status _sifields._sigchld._status 144#define si_utime _sifields._sigchld._utime 145#define si_stime _sifields._sigchld._stime 146#define si_value _sifields._rt._sigval 147#define si_int _sifields._rt._sigval.sival_int 148#define si_ptr _sifields._rt._sigval.sival_ptr 149#define si_addr _sifields._sigfault._addr 150#ifdef __ARCH_SI_TRAPNO 151#define si_trapno _sifields._sigfault._trapno 152#endif 153#define si_addr_lsb _sifields._sigfault._addr_lsb 154#define si_lower _sifields._sigfault._addr_bnd._lower 155#define si_upper _sifields._sigfault._addr_bnd._upper 156#define si_pkey _sifields._sigfault._addr_pkey._pkey 157#define si_band _sifields._sigpoll._band 158#define si_fd _sifields._sigpoll._fd 159#define si_call_addr _sifields._sigsys._call_addr 160#define si_syscall _sifields._sigsys._syscall 161#define si_arch _sifields._sigsys._arch 162 163/* 164 * si_code values 165 * Digital reserves positive values for kernel-generated signals. 166 */ 167#define SI_USER 0 /* sent by kill, sigsend, raise */ 168#define SI_KERNEL 0x80 /* sent by the kernel from somewhere */ 169#define SI_QUEUE -1 /* sent by sigqueue */ 170#define SI_TIMER -2 /* sent by timer expiration */ 171#define SI_MESGQ -3 /* sent by real time mesq state change */ 172#define SI_ASYNCIO -4 /* sent by AIO completion */ 173#define SI_SIGIO -5 /* sent by queued SIGIO */ 174#define SI_TKILL -6 /* sent by tkill system call */ 175#define SI_DETHREAD -7 /* sent by execve() killing subsidiary threads */ 176#define SI_ASYNCNL -60 /* sent by glibc async name lookup completion */ 177 178#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0) 179#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0) 180 181/* 182 * SIGILL si_codes 183 */ 184#define ILL_ILLOPC 1 /* illegal opcode */ 185#define ILL_ILLOPN 2 /* illegal operand */ 186#define ILL_ILLADR 3 /* illegal addressing mode */ 187#define ILL_ILLTRP 4 /* illegal trap */ 188#define ILL_PRVOPC 5 /* privileged opcode */ 189#define ILL_PRVREG 6 /* privileged register */ 190#define ILL_COPROC 7 /* coprocessor error */ 191#define ILL_BADSTK 8 /* internal stack error */ 192#define ILL_BADIADDR 9 /* unimplemented instruction address */ 193#define __ILL_BREAK 10 /* illegal break */ 194#define __ILL_BNDMOD 11 /* bundle-update (modification) in progress */ 195#define NSIGILL 11 196 197/* 198 * SIGFPE si_codes 199 */ 200#define FPE_INTDIV 1 /* integer divide by zero */ 201#define FPE_INTOVF 2 /* integer overflow */ 202#define FPE_FLTDIV 3 /* floating point divide by zero */ 203#define FPE_FLTOVF 4 /* floating point overflow */ 204#define FPE_FLTUND 5 /* floating point underflow */ 205#define FPE_FLTRES 6 /* floating point inexact result */ 206#define FPE_FLTINV 7 /* floating point invalid operation */ 207#define FPE_FLTSUB 8 /* subscript out of range */ 208#define __FPE_DECOVF 9 /* decimal overflow */ 209#define __FPE_DECDIV 10 /* decimal division by zero */ 210#define __FPE_DECERR 11 /* packed decimal error */ 211#define __FPE_INVASC 12 /* invalid ASCII digit */ 212#define __FPE_INVDEC 13 /* invalid decimal digit */ 213#define FPE_FLTUNK 14 /* undiagnosed floating-point exception */ 214#define FPE_CONDTRAP 15 /* trap on condition */ 215#define NSIGFPE 15 216 217/* 218 * SIGSEGV si_codes 219 */ 220#define SEGV_MAPERR 1 /* address not mapped to object */ 221#define SEGV_ACCERR 2 /* invalid permissions for mapped object */ 222#define SEGV_BNDERR 3 /* failed address bound checks */ 223#ifdef __ia64__ 224# define __SEGV_PSTKOVF 4 /* paragraph stack overflow */ 225#else 226# define SEGV_PKUERR 4 /* failed protection key checks */ 227#endif 228#define SEGV_ACCADI 5 /* ADI not enabled for mapped object */ 229#define SEGV_ADIDERR 6 /* Disrupting MCD error */ 230#define SEGV_ADIPERR 7 /* Precise MCD exception */ 231#define NSIGSEGV 7 232 233/* 234 * SIGBUS si_codes 235 */ 236#define BUS_ADRALN 1 /* invalid address alignment */ 237#define BUS_ADRERR 2 /* non-existent physical address */ 238#define BUS_OBJERR 3 /* object specific hardware error */ 239/* hardware memory error consumed on a machine check: action required */ 240#define BUS_MCEERR_AR 4 241/* hardware memory error detected in process but not consumed: action optional*/ 242#define BUS_MCEERR_AO 5 243#define NSIGBUS 5 244 245/* 246 * SIGTRAP si_codes 247 */ 248#define TRAP_BRKPT 1 /* process breakpoint */ 249#define TRAP_TRACE 2 /* process trace trap */ 250#define TRAP_BRANCH 3 /* process taken branch trap */ 251#define TRAP_HWBKPT 4 /* hardware breakpoint/watchpoint */ 252#define TRAP_UNK 5 /* undiagnosed trap */ 253#define NSIGTRAP 5 254 255/* 256 * There is an additional set of SIGTRAP si_codes used by ptrace 257 * that are of the form: ((PTRACE_EVENT_XXX << 8) | SIGTRAP) 258 */ 259 260/* 261 * SIGCHLD si_codes 262 */ 263#define CLD_EXITED 1 /* child has exited */ 264#define CLD_KILLED 2 /* child was killed */ 265#define CLD_DUMPED 3 /* child terminated abnormally */ 266#define CLD_TRAPPED 4 /* traced child has trapped */ 267#define CLD_STOPPED 5 /* child has stopped */ 268#define CLD_CONTINUED 6 /* stopped child has continued */ 269#define NSIGCHLD 6 270 271/* 272 * SIGPOLL (or any other signal without signal specific si_codes) si_codes 273 */ 274#define POLL_IN 1 /* data input available */ 275#define POLL_OUT 2 /* output buffers available */ 276#define POLL_MSG 3 /* input message available */ 277#define POLL_ERR 4 /* i/o error */ 278#define POLL_PRI 5 /* high priority input available */ 279#define POLL_HUP 6 /* device disconnected */ 280#define NSIGPOLL 6 281 282/* 283 * SIGSYS si_codes 284 */ 285#define SYS_SECCOMP 1 /* seccomp triggered */ 286#define NSIGSYS 1 287 288/* 289 * sigevent definitions 290 * 291 * It seems likely that SIGEV_THREAD will have to be handled from 292 * userspace, libpthread transmuting it to SIGEV_SIGNAL, which the 293 * thread manager then catches and does the appropriate nonsense. 294 * However, everything is written out here so as to not get lost. 295 */ 296#define SIGEV_SIGNAL 0 /* notify via signal */ 297#define SIGEV_NONE 1 /* other notification: meaningless */ 298#define SIGEV_THREAD 2 /* deliver via thread creation */ 299#define SIGEV_THREAD_ID 4 /* deliver to thread */ 300 301/* 302 * This works because the alignment is ok on all current architectures 303 * but we leave open this being overridden in the future 304 */ 305#ifndef __ARCH_SIGEV_PREAMBLE_SIZE 306#define __ARCH_SIGEV_PREAMBLE_SIZE (sizeof(int) * 2 + sizeof(sigval_t)) 307#endif 308 309#define SIGEV_MAX_SIZE 64 310#define SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE - __ARCH_SIGEV_PREAMBLE_SIZE) \ 311 / sizeof(int)) 312 313typedef struct sigevent { 314 sigval_t sigev_value; 315 int sigev_signo; 316 int sigev_notify; 317 union { 318 int _pad[SIGEV_PAD_SIZE]; 319 int _tid; 320 321 struct { 322 void (*_function)(sigval_t); 323 void *_attribute; /* really pthread_attr_t */ 324 } _sigev_thread; 325 } _sigev_un; 326} sigevent_t; 327 328#define sigev_notify_function _sigev_un._sigev_thread._function 329#define sigev_notify_attributes _sigev_un._sigev_thread._attribute 330#define sigev_notify_thread_id _sigev_un._tid 331 332 333#endif /* _UAPI_ASM_GENERIC_SIGINFO_H */ 334