1/* Signal number definitions. Linux version.
2 Copyright (C) 1995-2026 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#ifndef _BITS_SIGNUM_ARCH_H
20#define _BITS_SIGNUM_ARCH_H 1
21
22#ifndef _SIGNAL_H
23#error "Never include <bits/signum-arch.h> directly; use <signal.h> instead."
24#endif
25
26/* Adjustments and additions to the signal number constants for
27 most Linux systems. */
28
29#define SIGSTKFLT 16 /* Stack fault (obsolete). */
30#define SIGPWR 30 /* Power failure imminent. */
31
32/* Historical signals specified by POSIX. */
33#define SIGBUS 7 /* Bus error. */
34#define SIGSYS 31 /* Bad system call. */
35
36/* New(er) POSIX signals (1003.1-2008, 1003.1-2013). */
37#define SIGURG 23 /* Urgent data is available at a socket. */
38#define SIGSTOP 19 /* Stop, unblockable. */
39#define SIGTSTP 20 /* Keyboard stop. */
40#define SIGCONT 18 /* Continue. */
41#define SIGCHLD 17 /* Child terminated or stopped. */
42#define SIGTTIN 21 /* Background read from control terminal. */
43#define SIGTTOU 22 /* Background write to control terminal. */
44#define SIGPOLL 29 /* Pollable event occurred (System V). */
45#define SIGXFSZ 25 /* File size limit exceeded. */
46#define SIGXCPU 24 /* CPU time limit exceeded. */
47#define SIGVTALRM 26 /* Virtual timer expired. */
48#define SIGPROF 27 /* Profiling timer expired. */
49#define SIGUSR1 10 /* User-defined signal 1. */
50#define SIGUSR2 12 /* User-defined signal 2. */
51
52/* Nonstandard signals found in all modern POSIX systems
53 (including both BSD and Linux). */
54#define SIGWINCH 28 /* Window size change (4.3 BSD, Sun). */
55
56/* Archaic names for compatibility. */
57#define SIGIO SIGPOLL /* I/O now possible (4.2 BSD). */
58#define SIGIOT SIGABRT /* IOT instruction, abort() on a PDP-11. */
59#define SIGCLD SIGCHLD /* Old System V name */
60
61#define __SIGRTMIN 32
62#define __SIGRTMAX 64
63
64#endif /* <signal.h> included. */