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siginfo.h
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/* siginfo_t, sigevent and constants. Linux x86-64 version. Copyright (C) 2012 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ #if !defined _SIGNAL_H && !defined __need_siginfo_t \ && !defined __need_sigevent_t # error "Never include this file directly. Use <signal.h> instead" #endif #include <bits/wordsize.h> #if (!defined __have_sigval_t \ && (defined _SIGNAL_H || defined __need_siginfo_t \ || defined __need_sigevent_t)) # define __have_sigval_t 1 /* Type for data associated with a signal. */ typedef union sigval { int sival_int; void *sival_ptr; } sigval_t; #endif #if (!defined __have_siginfo_t \ && (defined _SIGNAL_H || defined __need_siginfo_t)) # define __have_siginfo_t 1 # define __SI_MAX_SIZE 128 # if __WORDSIZE == 64 # define __SI_PAD_SIZE ((__SI_MAX_SIZE / sizeof (int)) - 4) # else # define __SI_PAD_SIZE ((__SI_MAX_SIZE / sizeof (int)) - 3) # endif # if defined __x86_64__ && __WORDSIZE == 32 /* si_utime and si_stime must be 4 byte aligned for x32 to match the kernel. We align siginfo_t to 8 bytes so that si_utime and si_stime are actually aligned to 8 bytes since their offsets are multiple of 8 bytes. */ typedef __clock_t __attribute__ ((__aligned__ (4))) __sigchld_clock_t; # define __SI_ALIGNMENT __attribute__ ((__aligned__ (8))) # else typedef __clock_t __sigchld_clock_t; # define __SI_ALIGNMENT # endif typedef struct { int si_signo; /* Signal number. */ int si_errno; /* If non-zero, an errno value associated with this signal, as defined in <errno.h>. */ int si_code; /* Signal code. */ union { int _pad[__SI_PAD_SIZE]; /* kill(). */ struct { __pid_t si_pid; /* Sending process ID. */ __uid_t si_uid; /* Real user ID of sending process. */ } _kill; /* POSIX.1b timers. */ struct { int si_tid; /* Timer ID. */ int si_overrun; /* Overrun count. */ sigval_t si_sigval; /* Signal value. */ } _timer; /* POSIX.1b signals. */ struct { __pid_t si_pid; /* Sending process ID. */ __uid_t si_uid; /* Real user ID of sending process. */ sigval_t si_sigval; /* Signal value. */ } _rt; /* SIGCHLD. */ struct { __pid_t si_pid; /* Which child. */ __uid_t si_uid; /* Real user ID of sending process. */ int si_status; /* Exit value or signal. */ __sigchld_clock_t si_utime; __sigchld_clock_t si_stime; } _sigchld; /* SIGILL, SIGFPE, SIGSEGV, SIGBUS. */ struct { void *si_addr; /* Faulting insn/memory ref. */ } _sigfault; /* SIGPOLL. */ struct { long int si_band; /* Band event for SIGPOLL. */ int si_fd; } _sigpoll; /* SIGSYS. */ struct { void *_call_addr; /* Calling user insn. */ int _syscall; /* Triggering system call number. */ unsigned int _arch; /* AUDIT_ARCH_* of syscall. */ } _sigsys; } _sifields; } siginfo_t __SI_ALIGNMENT; /* X/Open requires some more fields with fixed names. */ # define si_pid _sifields._kill.si_pid # define si_uid _sifields._kill.si_uid # define si_timerid _sifields._timer.si_tid # define si_overrun _sifields._timer.si_overrun # define si_status _sifields._sigchld.si_status # define si_utime _sifields._sigchld.si_utime # define si_stime _sifields._sigchld.si_stime # define si_value _sifields._rt.si_sigval # define si_int _sifields._rt.si_sigval.sival_int # define si_ptr _sifields._rt.si_sigval.sival_ptr # define si_addr _sifields._sigfault.si_addr # define si_band _sifields._sigpoll.si_band # define si_fd _sifields._sigpoll.si_fd # define si_call_addr _sifields._sigsys._call_addr # define si_syscall _sifields._sigsys._syscall # define si_arch _sifields._sigsys._arch /* Values for `si_code'. Positive values are reserved for kernel-generated signals. */ enum { SI_ASYNCNL = -60, /* Sent by asynch name lookup completion. */ # define SI_ASYNCNL SI_ASYNCNL SI_TKILL = -6, /* Sent by tkill. */ # define SI_TKILL SI_TKILL SI_SIGIO, /* Sent by queued SIGIO. */ # define SI_SIGIO SI_SIGIO SI_ASYNCIO, /* Sent by AIO completion. */ # define SI_ASYNCIO SI_ASYNCIO SI_MESGQ, /* Sent by real time mesq state change. */ # define SI_MESGQ SI_MESGQ SI_TIMER, /* Sent by timer expiration. */ # define SI_TIMER SI_TIMER SI_QUEUE, /* Sent by sigqueue. */ # define SI_QUEUE SI_QUEUE SI_USER, /* Sent by kill, sigsend. */ # define SI_USER SI_USER SI_KERNEL = 0x80 /* Send by kernel. */ #define SI_KERNEL SI_KERNEL }; /* `si_code' values for SIGILL signal. */ enum { ILL_ILLOPC = 1, /* Illegal opcode. */ # define ILL_ILLOPC ILL_ILLOPC ILL_ILLOPN, /* Illegal operand. */ # define ILL_ILLOPN ILL_ILLOPN ILL_ILLADR, /* Illegal addressing mode. */ # define ILL_ILLADR ILL_ILLADR ILL_ILLTRP, /* Illegal trap. */ # define ILL_ILLTRP ILL_ILLTRP ILL_PRVOPC, /* Privileged opcode. */ # define ILL_PRVOPC ILL_PRVOPC ILL_PRVREG, /* Privileged register. */ # define ILL_PRVREG ILL_PRVREG ILL_COPROC, /* Coprocessor error. */ # define ILL_COPROC ILL_COPROC ILL_BADSTK /* Internal stack error. */ # define ILL_BADSTK ILL_BADSTK }; /* `si_code' values for SIGFPE signal. */ enum { FPE_INTDIV = 1, /* Integer divide by zero. */ # define FPE_INTDIV FPE_INTDIV FPE_INTOVF, /* Integer overflow. */ # define FPE_INTOVF FPE_INTOVF FPE_FLTDIV, /* Floating point divide by zero. */ # define FPE_FLTDIV FPE_FLTDIV FPE_FLTOVF, /* Floating point overflow. */ # define FPE_FLTOVF FPE_FLTOVF FPE_FLTUND, /* Floating point underflow. */ # define FPE_FLTUND FPE_FLTUND FPE_FLTRES, /* Floating point inexact result. */ # define FPE_FLTRES FPE_FLTRES FPE_FLTINV, /* Floating point invalid operation. */ # define FPE_FLTINV FPE_FLTINV FPE_FLTSUB /* Subscript out of range. */ # define FPE_FLTSUB FPE_FLTSUB }; /* `si_code' values for SIGSEGV signal. */ enum { SEGV_MAPERR = 1, /* Address not mapped to object. */ # define SEGV_MAPERR SEGV_MAPERR SEGV_ACCERR /* Invalid permissions for mapped object. */ # define SEGV_ACCERR SEGV_ACCERR }; /* `si_code' values for SIGBUS signal. */ enum { BUS_ADRALN = 1, /* Invalid address alignment. */ # define BUS_ADRALN BUS_ADRALN BUS_ADRERR, /* Non-existant physical address. */ # define BUS_ADRERR BUS_ADRERR BUS_OBJERR /* Object specific hardware error. */ # define BUS_OBJERR BUS_OBJERR }; /* `si_code' values for SIGTRAP signal. */ enum { TRAP_BRKPT = 1, /* Process breakpoint. */ # define TRAP_BRKPT TRAP_BRKPT TRAP_TRACE /* Process trace trap. */ # define TRAP_TRACE TRAP_TRACE }; /* `si_code' values for SIGCHLD signal. */ enum { CLD_EXITED = 1, /* Child has exited. */ # define CLD_EXITED CLD_EXITED CLD_KILLED, /* Child was killed. */ # define CLD_KILLED CLD_KILLED CLD_DUMPED, /* Child terminated abnormally. */ # define CLD_DUMPED CLD_DUMPED CLD_TRAPPED, /* Traced child has trapped. */ # define CLD_TRAPPED CLD_TRAPPED CLD_STOPPED, /* Child has stopped. */ # define CLD_STOPPED CLD_STOPPED CLD_CONTINUED /* Stopped child has continued. */ # define CLD_CONTINUED CLD_CONTINUED }; /* `si_code' values for SIGPOLL signal. */ enum { POLL_IN = 1, /* Data input available. */ # define POLL_IN POLL_IN POLL_OUT, /* Output buffers available. */ # define POLL_OUT POLL_OUT POLL_MSG, /* Input message available. */ # define POLL_MSG POLL_MSG POLL_ERR, /* I/O error. */ # define POLL_ERR POLL_ERR POLL_PRI, /* High priority input available. */ # define POLL_PRI POLL_PRI POLL_HUP /* Device disconnected. */ # define POLL_HUP POLL_HUP }; # undef __need_siginfo_t #endif /* !have siginfo_t && (have _SIGNAL_H || need siginfo_t). */ #if (defined _SIGNAL_H || defined __need_sigevent_t) \ && !defined __have_sigevent_t # define __have_sigevent_t 1 /* Structure to transport application-defined values with signals. */ # define __SIGEV_MAX_SIZE 64 # if __WORDSIZE == 64 # define __SIGEV_PAD_SIZE ((__SIGEV_MAX_SIZE / sizeof (int)) - 4) # else # define __SIGEV_PAD_SIZE ((__SIGEV_MAX_SIZE / sizeof (int)) - 3) # endif /* Forward declaration. */ # ifndef __have_pthread_attr_t typedef union pthread_attr_t pthread_attr_t; # define __have_pthread_attr_t 1 # endif typedef struct sigevent { sigval_t sigev_value; int sigev_signo; int sigev_notify; union { int _pad[__SIGEV_PAD_SIZE]; /* When SIGEV_SIGNAL and SIGEV_THREAD_ID set, LWP ID of the thread to receive the signal. */ __pid_t _tid; struct { void (*_function) (sigval_t); /* Function to start. */ pthread_attr_t *_attribute; /* Thread attributes. */ } _sigev_thread; } _sigev_un; } sigevent_t; /* POSIX names to access some of the members. */ # define sigev_notify_function _sigev_un._sigev_thread._function # define sigev_notify_attributes _sigev_un._sigev_thread._attribute /* `sigev_notify' values. */ enum { SIGEV_SIGNAL = 0, /* Notify via signal. */ # define SIGEV_SIGNAL SIGEV_SIGNAL SIGEV_NONE, /* Other notification: meaningless. */ # define SIGEV_NONE SIGEV_NONE SIGEV_THREAD, /* Deliver via thread creation. */ # define SIGEV_THREAD SIGEV_THREAD SIGEV_THREAD_ID = 4 /* Send signal to specific thread. */ #define SIGEV_THREAD_ID SIGEV_THREAD_ID }; #endif /* have _SIGNAL_H. */