]>
Commit | Line | Data |
---|---|---|
8082d91e | 1 | /* Signal number constants. Generic template. |
04277e02 | 2 | Copyright (C) 1991-2019 Free Software Foundation, Inc. |
8082d91e ZW |
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 | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
8082d91e ZW |
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 SIGBUS 10 /* Bus error. */ | |
61 | #define SIGSYS 12 /* Bad system call. */ | |
62 | #define SIGPIPE 13 /* Broken pipe. */ | |
63 | #define SIGALRM 14 /* Alarm clock. */ | |
64 | ||
65 | /* New(er) POSIX signals (1003.1-2008, 1003.1-2013). */ | |
66 | #define SIGURG 16 /* Urgent data is available at a socket. */ | |
67 | #define SIGSTOP 17 /* Stop, unblockable. */ | |
68 | #define SIGTSTP 18 /* Keyboard stop. */ | |
69 | #define SIGCONT 19 /* Continue. */ | |
70 | #define SIGCHLD 20 /* Child terminated or stopped. */ | |
71 | #define SIGTTIN 21 /* Background read from control terminal. */ | |
72 | #define SIGTTOU 22 /* Background write to control terminal. */ | |
73 | #define SIGPOLL 23 /* Pollable event occurred (System V). */ | |
74 | #define SIGXCPU 24 /* CPU time limit exceeded. */ | |
75 | #define SIGXFSZ 25 /* File size limit exceeded. */ | |
76 | #define SIGVTALRM 26 /* Virtual timer expired. */ | |
77 | #define SIGPROF 27 /* Profiling timer expired. */ | |
78 | #define SIGUSR1 30 /* User-defined signal 1. */ | |
79 | #define SIGUSR2 31 /* User-defined signal 2. */ | |
80 | ||
81 | /* Nonstandard signals found in all modern POSIX systems | |
82 | (including both BSD and Linux). */ | |
83 | #define SIGWINCH 28 /* Window size change (4.3 BSD, Sun). */ | |
84 | ||
85 | /* Archaic names for compatibility. */ | |
86 | #define SIGIO SIGPOLL /* I/O now possible (4.2 BSD). */ | |
87 | #define SIGIOT SIGABRT /* IOT instruction, abort() on a PDP-11. */ | |
88 | #define SIGCLD SIGCHLD /* Old System V name */ | |
89 | ||
90 | /* Not all systems support real-time signals. bits/signum.h indicates | |
91 | that they are supported by overriding __SIGRTMAX to a value greater | |
92 | than __SIGRTMIN. These constants give the kernel-level hard limits, | |
93 | but some real-time signals may be used internally by glibc. Do not | |
94 | use these constants in application code; use SIGRTMIN and SIGRTMAX | |
95 | (defined in signal.h) instead. */ | |
96 | #define __SIGRTMIN 32 | |
97 | #define __SIGRTMAX __SIGRTMIN | |
98 | ||
99 | /* Biggest signal number + 1 (including real-time signals). */ | |
100 | #define _NSIG (__SIGRTMAX + 1) | |
101 | ||
102 | #endif /* bits/signum-generic.h. */ |