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+/* Signal number constants. Generic template.
+ Copyright (C) 1991-2018 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/>. */
+
+#ifndef _BITS_SIGNUM_GENERIC_H
+#define _BITS_SIGNUM_GENERIC_H 1
+
+#ifndef _SIGNAL_H
+#error "Never include <bits/signum-generic.h> directly; use <signal.h> instead."
+#endif
+
+/* Fake signal functions. */
+
+#define SIG_ERR ((__sighandler_t) -1) /* Error return. */
+#define SIG_DFL ((__sighandler_t) 0) /* Default action. */
+#define SIG_IGN ((__sighandler_t) 1) /* Ignore signal. */
+
+#ifdef __USE_XOPEN
+# define SIG_HOLD ((__sighandler_t) 2) /* Add signal to hold mask. */
+#endif
+
+/* We define here all the signal names listed in POSIX (1003.1-2008);
+ as of 1003.1-2013, no additional signals have been added by POSIX.
+ We also define here signal names that historically exist in every
+ real-world POSIX variant (e.g. SIGWINCH).
+
+ Signals in the 1-15 range are defined with their historical numbers.
+ For other signals, we use the BSD numbers.
+ There are two unallocated signal numbers in the 1-31 range: 7 and 29.
+ Signal number 0 is reserved for use as kill(pid, 0), to test whether
+ a process exists without sending it a signal. */
+
+/* ISO C99 signals. */
+#define SIGINT 2 /* Interactive attention signal. */
+#define SIGILL 4 /* Illegal instruction. */
+#define SIGABRT 6 /* Abnormal termination. */
+#define SIGFPE 8 /* Erroneous arithmetic operation. */
+#define SIGSEGV 11 /* Invalid access to storage. */
+#define SIGTERM 15 /* Termination request. */
+
+/* Historical signals specified by POSIX. */
+#define SIGHUP 1 /* Hangup. */
+#define SIGQUIT 3 /* Quit. */
+#define SIGTRAP 5 /* Trace/breakpoint trap. */
+#define SIGKILL 9 /* Killed. */
+#define SIGBUS 10 /* Bus error. */
+#define SIGSYS 12 /* Bad system call. */
+#define SIGPIPE 13 /* Broken pipe. */
+#define SIGALRM 14 /* Alarm clock. */
+
+/* New(er) POSIX signals (1003.1-2008, 1003.1-2013). */
+#define SIGURG 16 /* Urgent data is available at a socket. */
+#define SIGSTOP 17 /* Stop, unblockable. */
+#define SIGTSTP 18 /* Keyboard stop. */
+#define SIGCONT 19 /* Continue. */
+#define SIGCHLD 20 /* Child terminated or stopped. */
+#define SIGTTIN 21 /* Background read from control terminal. */
+#define SIGTTOU 22 /* Background write to control terminal. */
+#define SIGPOLL 23 /* Pollable event occurred (System V). */
+#define SIGXCPU 24 /* CPU time limit exceeded. */
+#define SIGXFSZ 25 /* File size limit exceeded. */
+#define SIGVTALRM 26 /* Virtual timer expired. */
+#define SIGPROF 27 /* Profiling timer expired. */
+#define SIGUSR1 30 /* User-defined signal 1. */
+#define SIGUSR2 31 /* User-defined signal 2. */
+
+/* Nonstandard signals found in all modern POSIX systems
+ (including both BSD and Linux). */
+#define SIGWINCH 28 /* Window size change (4.3 BSD, Sun). */
+
+/* Archaic names for compatibility. */
+#define SIGIO SIGPOLL /* I/O now possible (4.2 BSD). */
+#define SIGIOT SIGABRT /* IOT instruction, abort() on a PDP-11. */
+#define SIGCLD SIGCHLD /* Old System V name */
+
+/* Not all systems support real-time signals. bits/signum.h indicates
+ that they are supported by overriding __SIGRTMAX to a value greater
+ than __SIGRTMIN. These constants give the kernel-level hard limits,
+ but some real-time signals may be used internally by glibc. Do not
+ use these constants in application code; use SIGRTMIN and SIGRTMAX
+ (defined in signal.h) instead. */
+#define __SIGRTMIN 32
+#define __SIGRTMAX __SIGRTMIN
+
+/* Biggest signal number + 1 (including real-time signals). */
+#define _NSIG (__SIGRTMAX + 1)
+
+#endif /* bits/signum-generic.h. */