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Edit File: siginfo.h

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ #ifndef _ASM_GENERIC_SIGINFO_H #define _ASM_GENERIC_SIGINFO_H #include <linux/types.h> typedef union sigval { int sival_int; void *sival_ptr; } sigval_t; #define SI_MAX_SIZE 128 /* * The default "si_band" type is "long", as specified by POSIX. * However, some architectures want to override this to "int" * for historical compatibility reasons, so we allow that. */ #ifndef __ARCH_SI_BAND_T #define __ARCH_SI_BAND_T long #endif #ifndef __ARCH_SI_CLOCK_T #define __ARCH_SI_CLOCK_T __kernel_clock_t #endif #ifndef __ARCH_SI_ATTRIBUTES #define __ARCH_SI_ATTRIBUTES #endif /* * Be careful when extending this union. On 32bit siginfo_t is 32bit * aligned. Which means that a 64bit field or any other field that * would increase the alignment of siginfo_t will break the ABI. */ union __sifields { /* kill() */ struct { __kernel_pid_t _pid; /* sender's pid */ __kernel_uid32_t _uid; /* sender's uid */ } _kill; /* POSIX.1b timers */ struct { __kernel_timer_t _tid; /* timer id */ int _overrun; /* overrun count */ sigval_t _sigval; /* same as below */ int _sys_private; /* not to be passed to user */ } _timer; /* POSIX.1b signals */ struct { __kernel_pid_t _pid; /* sender's pid */ __kernel_uid32_t _uid; /* sender's uid */ sigval_t _sigval; } _rt; /* SIGCHLD */ struct { __kernel_pid_t _pid; /* which child */ __kernel_uid32_t _uid; /* sender's uid */ int _status; /* exit code */ __ARCH_SI_CLOCK_T _utime; __ARCH_SI_CLOCK_T _stime; } _sigchld; /* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGTRAP, SIGEMT */ struct { void *_addr; /* faulting insn/memory ref. */ #ifdef __ia64__ int _imm; /* immediate value for "break" */ unsigned int _flags; /* see ia64 si_flags */ unsigned long _isr; /* isr */ #endif #define __ADDR_BND_PKEY_PAD (__alignof__(void *) < sizeof(short) ? \ sizeof(short) : __alignof__(void *)) union { /* used on alpha and sparc */ int _trapno; /* TRAP # which caused the signal */ /* * used when si_code=BUS_MCEERR_AR or * used when si_code=BUS_MCEERR_AO */ short _addr_lsb; /* LSB of the reported address */ /* used when si_code=SEGV_BNDERR */ struct { char _dummy_bnd[__ADDR_BND_PKEY_PAD]; void *_lower; void *_upper; } _addr_bnd; /* used when si_code=SEGV_PKUERR */ struct { char _dummy_pkey[__ADDR_BND_PKEY_PAD]; __u32 _pkey; } _addr_pkey; /* used when si_code=TRAP_PERF */ struct { unsigned long _data; __u32 _type; __u32 _flags; } _perf; }; } _sigfault; /* SIGPOLL */ struct { __ARCH_SI_BAND_T _band; /* POLL_IN, POLL_OUT, POLL_MSG */ int _fd; } _sigpoll; /* SIGSYS */ struct { void *_call_addr; /* calling user insn */ int _syscall; /* triggering system call number */ unsigned int _arch; /* AUDIT_ARCH_* of syscall */ } _sigsys; }; #ifndef __ARCH_HAS_SWAPPED_SIGINFO #define __SIGINFO \ struct { \ int si_signo; \ int si_errno; \ int si_code; \ union __sifields _sifields; \ } #else #define __SIGINFO \ struct { \ int si_signo; \ int si_code; \ int si_errno; \ union __sifields _sifields; \ } #endif /* __ARCH_HAS_SWAPPED_SIGINFO */ typedef struct siginfo { union { __SIGINFO; int _si_pad[SI_MAX_SIZE/sizeof(int)]; }; } __ARCH_SI_ATTRIBUTES siginfo_t; /* * How these fields are to be accessed. */ #define si_pid _sifields._kill._pid #define si_uid _sifields._kill._uid #define si_tid _sifields._timer._tid #define si_overrun _sifields._timer._overrun #define si_sys_private _sifields._timer._sys_private #define si_status _sifields._sigchld._status #define si_utime _sifields._sigchld._utime #define si_stime _sifields._sigchld._stime #define si_value _sifields._rt._sigval #define si_int _sifields._rt._sigval.sival_int #define si_ptr _sifields._rt._sigval.sival_ptr #define si_addr _sifields._sigfault._addr #define si_trapno _sifields._sigfault._trapno #define si_addr_lsb _sifields._sigfault._addr_lsb #define si_lower _sifields._sigfault._addr_bnd._lower #define si_upper _sifields._sigfault._addr_bnd._upper #define si_pkey _sifields._sigfault._addr_pkey._pkey #define si_perf_data _sifields._sigfault._perf._data #define si_perf_type _sifields._sigfault._perf._type #define si_perf_flags _sifields._sigfault._perf._flags #define si_band _sifields._sigpoll._band #define si_fd _sifields._sigpoll._fd #define si_call_addr _sifields._sigsys._call_addr #define si_syscall _sifields._sigsys._syscall #define si_arch _sifields._sigsys._arch /* * si_code values * Digital reserves positive values for kernel-generated signals. */ #define SI_USER 0 /* sent by kill, sigsend, raise */ #define SI_KERNEL 0x80 /* sent by the kernel from somewhere */ #define SI_QUEUE -1 /* sent by sigqueue */ #define SI_TIMER -2 /* sent by timer expiration */ #define SI_MESGQ -3 /* sent by real time mesq state change */ #define SI_ASYNCIO -4 /* sent by AIO completion */ #define SI_SIGIO -5 /* sent by queued SIGIO */ #define SI_TKILL -6 /* sent by tkill system call */ #define SI_DETHREAD -7 /* sent by execve() killing subsidiary threads */ #define SI_ASYNCNL -60 /* sent by glibc async name lookup completion */ #define SI_FROMUSER(siptr) ((siptr)->si_code <= 0) #define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0) /* * SIGILL si_codes */ #define ILL_ILLOPC 1 /* illegal opcode */ #define ILL_ILLOPN 2 /* illegal operand */ #define ILL_ILLADR 3 /* illegal addressing mode */ #define ILL_ILLTRP 4 /* illegal trap */ #define ILL_PRVOPC 5 /* privileged opcode */ #define ILL_PRVREG 6 /* privileged register */ #define ILL_COPROC 7 /* coprocessor error */ #define ILL_BADSTK 8 /* internal stack error */ #define ILL_BADIADDR 9 /* unimplemented instruction address */ #define __ILL_BREAK 10 /* illegal break */ #define __ILL_BNDMOD 11 /* bundle-update (modification) in progress */ #define NSIGILL 11 /* * SIGFPE si_codes */ #define FPE_INTDIV 1 /* integer divide by zero */ #define FPE_INTOVF 2 /* integer overflow */ #define FPE_FLTDIV 3 /* floating point divide by zero */ #define FPE_FLTOVF 4 /* floating point overflow */ #define FPE_FLTUND 5 /* floating point underflow */ #define FPE_FLTRES 6 /* floating point inexact result */ #define FPE_FLTINV 7 /* floating point invalid operation */ #define FPE_FLTSUB 8 /* subscript out of range */ #define __FPE_DECOVF 9 /* decimal overflow */ #define __FPE_DECDIV 10 /* decimal division by zero */ #define __FPE_DECERR 11 /* packed decimal error */ #define __FPE_INVASC 12 /* invalid ASCII digit */ #define __FPE_INVDEC 13 /* invalid decimal digit */ #define FPE_FLTUNK 14 /* undiagnosed floating-point exception */ #define FPE_CONDTRAP 15 /* trap on condition */ #define NSIGFPE 15 /* * SIGSEGV si_codes */ #define SEGV_MAPERR 1 /* address not mapped to object */ #define SEGV_ACCERR 2 /* invalid permissions for mapped object */ #define SEGV_BNDERR 3 /* failed address bound checks */ #ifdef __ia64__ # define __SEGV_PSTKOVF 4 /* paragraph stack overflow */ #else # define SEGV_PKUERR 4 /* failed protection key checks */ #endif #define SEGV_ACCADI 5 /* ADI not enabled for mapped object */ #define SEGV_ADIDERR 6 /* Disrupting MCD error */ #define SEGV_ADIPERR 7 /* Precise MCD exception */ #define SEGV_MTEAERR 8 /* Asynchronous ARM MTE error */ #define SEGV_MTESERR 9 /* Synchronous ARM MTE exception */ #define SEGV_CPERR 10 /* Control protection fault */ #define NSIGSEGV 10 /* * SIGBUS si_codes */ #define BUS_ADRALN 1 /* invalid address alignment */ #define BUS_ADRERR 2 /* non-existent physical address */ #define BUS_OBJERR 3 /* object specific hardware error */ /* hardware memory error consumed on a machine check: action required */ #define BUS_MCEERR_AR 4 /* hardware memory error detected in process but not consumed: action optional*/ #define BUS_MCEERR_AO 5 #define NSIGBUS 5 /* * SIGTRAP si_codes */ #define TRAP_BRKPT 1 /* process breakpoint */ #define TRAP_TRACE 2 /* process trace trap */ #define TRAP_BRANCH 3 /* process taken branch trap */ #define TRAP_HWBKPT 4 /* hardware breakpoint/watchpoint */ #define TRAP_UNK 5 /* undiagnosed trap */ #define TRAP_PERF 6 /* perf event with sigtrap=1 */ #define NSIGTRAP 6 /* * There is an additional set of SIGTRAP si_codes used by ptrace * that are of the form: ((PTRACE_EVENT_XXX << 8) | SIGTRAP) */ /* * Flags for si_perf_flags if SIGTRAP si_code is TRAP_PERF. */ #define TRAP_PERF_FLAG_ASYNC (1u << 0) /* * SIGCHLD si_codes */ #define CLD_EXITED 1 /* child has exited */ #define CLD_KILLED 2 /* child was killed */ #define CLD_DUMPED 3 /* child terminated abnormally */ #define CLD_TRAPPED 4 /* traced child has trapped */ #define CLD_STOPPED 5 /* child has stopped */ #define CLD_CONTINUED 6 /* stopped child has continued */ #define NSIGCHLD 6 /* * SIGPOLL (or any other signal without signal specific si_codes) si_codes */ #define POLL_IN 1 /* data input available */ #define POLL_OUT 2 /* output buffers available */ #define POLL_MSG 3 /* input message available */ #define POLL_ERR 4 /* i/o error */ #define POLL_PRI 5 /* high priority input available */ #define POLL_HUP 6 /* device disconnected */ #define NSIGPOLL 6 /* * SIGSYS si_codes */ #define SYS_SECCOMP 1 /* seccomp triggered */ #define SYS_USER_DISPATCH 2 /* syscall user dispatch triggered */ #define NSIGSYS 2 /* * SIGEMT si_codes */ #define EMT_TAGOVF 1 /* tag overflow */ #define NSIGEMT 1 /* * sigevent definitions * * It seems likely that SIGEV_THREAD will have to be handled from * userspace, libpthread transmuting it to SIGEV_SIGNAL, which the * thread manager then catches and does the appropriate nonsense. * However, everything is written out here so as to not get lost. */ #define SIGEV_SIGNAL 0 /* notify via signal */ #define SIGEV_NONE 1 /* other notification: meaningless */ #define SIGEV_THREAD 2 /* deliver via thread creation */ #define SIGEV_THREAD_ID 4 /* deliver to thread */ /* * This works because the alignment is ok on all current architectures * but we leave open this being overridden in the future */ #ifndef __ARCH_SIGEV_PREAMBLE_SIZE #define __ARCH_SIGEV_PREAMBLE_SIZE (sizeof(int) * 2 + sizeof(sigval_t)) #endif #define SIGEV_MAX_SIZE 64 #define SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE - __ARCH_SIGEV_PREAMBLE_SIZE) \ / sizeof(int)) typedef struct sigevent { sigval_t sigev_value; int sigev_signo; int sigev_notify; union { int _pad[SIGEV_PAD_SIZE]; int _tid; struct { void (*_function)(sigval_t); void *_attribute; /* really pthread_attr_t */ } _sigev_thread; } _sigev_un; } sigevent_t; #define sigev_notify_function _sigev_un._sigev_thread._function #define sigev_notify_attributes _sigev_un._sigev_thread._attribute #define sigev_notify_thread_id _sigev_un._tid #endif /* _ASM_GENERIC_SIGINFO_H */