1 | /* Signal number constants. Generic template. |
2 | Copyright (C) 1991-2022 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_GENERIC_H |
20 | #define _BITS_SIGNUM_GENERIC_H 1 |
21 | |
22 | #ifndef _SIGNAL_H |
23 | #error "Never include <bits/signum-generic.h> directly; use <signal.h> instead." |
24 | #endif |
25 | |
26 | /* Fake signal functions. */ |
27 | |
28 | #define SIG_ERR ((__sighandler_t) -1) /* Error return. */ |
29 | #define SIG_DFL ((__sighandler_t) 0) /* Default action. */ |
30 | #define SIG_IGN ((__sighandler_t) 1) /* Ignore signal. */ |
31 | |
32 | #ifdef __USE_XOPEN |
33 | # define SIG_HOLD ((__sighandler_t) 2) /* Add signal to hold mask. */ |
34 | #endif |
35 | |
36 | /* We define here all the signal names listed in POSIX (1003.1-2008); |
37 | as of 1003.1-2013, no additional signals have been added by POSIX. |
38 | We also define here signal names that historically exist in every |
39 | real-world POSIX variant (e.g. SIGWINCH). |
40 | |
41 | Signals in the 1-15 range are defined with their historical numbers. |
42 | For other signals, we use the BSD numbers. |
43 | There are two unallocated signal numbers in the 1-31 range: 7 and 29. |
44 | Signal number 0 is reserved for use as kill(pid, 0), to test whether |
45 | a process exists without sending it a signal. */ |
46 | |
47 | /* ISO C99 signals. */ |
48 | #define SIGINT 2 /* Interactive attention signal. */ |
49 | #define SIGILL 4 /* Illegal instruction. */ |
50 | #define SIGABRT 6 /* Abnormal termination. */ |
51 | #define SIGFPE 8 /* Erroneous arithmetic operation. */ |
52 | #define SIGSEGV 11 /* Invalid access to storage. */ |
53 | #define SIGTERM 15 /* Termination request. */ |
54 | |
55 | /* Historical signals specified by POSIX. */ |
56 | #define SIGHUP 1 /* Hangup. */ |
57 | #define SIGQUIT 3 /* Quit. */ |
58 | #define SIGTRAP 5 /* Trace/breakpoint trap. */ |
59 | #define SIGKILL 9 /* Killed. */ |
60 | #define SIGPIPE 13 /* Broken pipe. */ |
61 | #define SIGALRM 14 /* Alarm clock. */ |
62 | |
63 | /* Archaic names for compatibility. */ |
64 | #define SIGIO SIGPOLL /* I/O now possible (4.2 BSD). */ |
65 | #define SIGIOT SIGABRT /* IOT instruction, abort() on a PDP-11. */ |
66 | #define SIGCLD SIGCHLD /* Old System V name */ |
67 | |
68 | /* Not all systems support real-time signals. bits/signum.h indicates |
69 | that they are supported by overriding __SIGRTMAX to a value greater |
70 | than __SIGRTMIN. These constants give the kernel-level hard limits, |
71 | but some real-time signals may be used internally by glibc. Do not |
72 | use these constants in application code; use SIGRTMIN and SIGRTMAX |
73 | (defined in signal.h) instead. */ |
74 | |
75 | /* Include system specific bits. */ |
76 | #include <bits/signum-arch.h> |
77 | |
78 | /* Biggest signal number + 1 (including real-time signals). */ |
79 | #define _NSIG (__SIGRTMAX + 1) |
80 | |
81 | #endif /* bits/signum-generic.h. */ |
82 | |