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Diffstat (limited to 'bits/signum-generic.h')
| -rw-r--r-- | bits/signum-generic.h | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/bits/signum-generic.h b/bits/signum-generic.h new file mode 100644 index 0000000000..5a5683e753 --- /dev/null +++ b/bits/signum-generic.h @@ -0,0 +1,102 @@ +/* Signal number constants. Generic template. + Copyright (C) 1991-2017 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. */ |