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- /* Signal number constants. Generic template.
- Copyright (C) 1991-2021 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
- <https://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 SIGPIPE 13 /* Broken pipe. */
- #define SIGALRM 14 /* Alarm clock. */
- /* 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. */
- /* Include system specific bits. */
- #include <bits/signum-arch.h>
- /* Biggest signal number + 1 (including real-time signals). */
- #define _NSIG (__SIGRTMAX + 1)
- #endif /* bits/signum-generic.h. */
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