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8082d91e1c
Many of the things defined by bits/signum.h are invariant across all supported operating systems. This patch factors out all of them to a new header bits/signum-generic.h, which each bits/signum.h will include and then override whichever things need adjustment. Normally that will mean, at most, adding or changing a few signal numbers. A user-visible side effect is that the obsolete signal constant SIGUNUSED (which is an alias for SIGSYS on all platforms that define it) is no longer exposed by any version of bits/signum.h. A side effect only relevant to glibc hackers is that _NSIG is now defined in terms of __SIGRTMAX, instead of the other way around. This is because __SIGRTMAX varies from platform to platform, but _NSIG==__SIGRTMAX+1 is true universally. If your platform doesn't support realtime signals, leave __SIGRTMAX equal to __SIGRTMIN. I also added a Linux-specific test to make sure that our signal constants match the ones in <asm/signal.h>, since we can't use that header (it's not even vaguely namespace-clean). * bits/signum-generic.h: Renamed from bits/signum.h. Add proper multiple include guard and misuse check. Define __SIGRTMIN = __SIGRTMAX = 32, and define _NSIG = __SIGRTMAX+1. Move definition of SIGIO to "archaic names for compatibility" section. * bits/signum.h: New file which just includes bits/signum-generic.h. * sysdeps/unix/bsd/bits/signum.h * sysdeps/unix/sysv/linux/bits/signum.h * sysdeps/unix/sysv/linux/alpha/bits/signum.h * sysdeps/unix/sysv/linux/hppa/bits/signum.h * sysdeps/unix/sysv/linux/mips/bits/signum.h * sysdeps/unix/sysv/linux/sparc/bits/signum.h Just include <bits/signum-generic.h> and then add or adjust signal constants. Do not define SIGUNUSED, SIGRTMIN, or SIGRTMAX. * signal/Makefile: Install bits/signum-generic.h. * signal/signal.h: Define SIGRTMIN and SIGRTMAX here. * sysdeps/generic/siglist.h: SIGSYS and SIGWINCH are universal. Prefer SIGPOLL to SIGIO. Simplify #ifdeffage. * sysdeps/unix/sysv/linux/tst-signal-numbers.sh: New test. * sysdeps/unix/sysv/linux/Makefile: Run it.
75 lines
3.2 KiB
C
75 lines
3.2 KiB
C
/* Canonical list of all signal names.
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Copyright (C) 1996-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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/* This file should be usable for any platform, since it just associates
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the SIG* macros with text names and descriptions. The actual values
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come from <bits/signum.h> (via <signal.h>). For any signal macros do not
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exist on every platform, we can use #ifdef tests here and still use
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this single common file for all platforms. */
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/* This file is included multiple times. */
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/* Standard signals, in the numerical order defined in
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bits/signum-generic.h. */
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init_sig (SIGHUP, "HUP", N_("Hangup"))
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init_sig (SIGINT, "INT", N_("Interrupt"))
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init_sig (SIGQUIT, "QUIT", N_("Quit"))
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init_sig (SIGILL, "ILL", N_("Illegal instruction"))
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init_sig (SIGTRAP, "TRAP", N_("Trace/breakpoint trap"))
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init_sig (SIGABRT, "ABRT", N_("Aborted"))
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init_sig (SIGFPE, "FPE", N_("Floating point exception"))
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init_sig (SIGKILL, "KILL", N_("Killed"))
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init_sig (SIGBUS, "BUS", N_("Bus error"))
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init_sig (SIGSYS, "SYS", N_("Bad system call"))
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init_sig (SIGSEGV, "SEGV", N_("Segmentation fault"))
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init_sig (SIGPIPE, "PIPE", N_("Broken pipe"))
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init_sig (SIGALRM, "ALRM", N_("Alarm clock"))
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init_sig (SIGTERM, "TERM", N_("Terminated"))
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init_sig (SIGURG, "URG", N_("Urgent I/O condition"))
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init_sig (SIGSTOP, "STOP", N_("Stopped (signal)"))
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init_sig (SIGTSTP, "TSTP", N_("Stopped"))
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init_sig (SIGCONT, "CONT", N_("Continued"))
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init_sig (SIGCHLD, "CHLD", N_("Child exited"))
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init_sig (SIGTTIN, "TTIN", N_("Stopped (tty input)"))
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init_sig (SIGTTOU, "TTOU", N_("Stopped (tty output)"))
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init_sig (SIGPOLL, "POLL", N_("I/O possible"))
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init_sig (SIGXCPU, "XCPU", N_("CPU time limit exceeded"))
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init_sig (SIGXFSZ, "XFSZ", N_("File size limit exceeded"))
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init_sig (SIGVTALRM, "VTALRM", N_("Virtual timer expired"))
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init_sig (SIGPROF, "PROF", N_("Profiling timer expired"))
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init_sig (SIGUSR1, "USR1", N_("User defined signal 1"))
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init_sig (SIGUSR2, "USR2", N_("User defined signal 2"))
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init_sig (SIGWINCH, "WINCH", N_("Window changed"))
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/* Signals that are not present on all supported platforms. */
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#ifdef SIGEMT
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init_sig (SIGEMT, "EMT", N_("EMT trap"))
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#endif
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#ifdef SIGSTKFLT
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init_sig (SIGSTKFLT, "STKFLT", N_("Stack fault"))
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#endif
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#ifdef SIGPWR
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init_sig (SIGPWR, "PWR", N_("Power failure"))
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#endif
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#if defined SIGINFO && (!defined SIGPWR || SIGPWR != SIGINFO)
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init_sig (SIGINFO, "INFO", N_("Information request"))
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#endif
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#if defined SIGLOST && (!defined SIGPWR || SIGPWR != SIGLOST)
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init_sig (SIGLOST, "LOST", N_("Resource lost"))
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#endif
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