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3a3a763349
In glibc 2.32 sys_siglist is no longer exported. The MT-safe function sigdescr_np() is now available for the same purpose. Signed-off-by: Mike Pattrick <mkp@redhat.com> Reviewed-by: David Marchand <david.marchand@redhat.com> Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
81 lines
2.3 KiB
C
81 lines
2.3 KiB
C
/*
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* Copyright (c) 2008, 2009, 2011, 2012, 2013 Nicira, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <config.h>
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#include "signals.h"
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#include <errno.h>
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#include <limits.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "openvswitch/poll-loop.h"
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#include "socket-util.h"
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#include "openvswitch/type-props.h"
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#include "util.h"
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#include "openvswitch/vlog.h"
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VLOG_DEFINE_THIS_MODULE(signals);
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#if defined(_NSIG)
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#define N_SIGNALS _NSIG
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#elif defined(NSIG)
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#define N_SIGNALS NSIG
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#else
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/* We could try harder to get the maximum signal number, but in practice we
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* only care about SIGHUP, which is normally signal 1 anyway. */
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#define N_SIGNALS 32
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#endif
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/* Returns the name of signal 'signum' as a string. The return value is either
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* a statically allocated constant string or the 'bufsize'-byte buffer
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* 'namebuf'. 'bufsize' should be at least SIGNAL_NAME_BUFSIZE.
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*
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* The string is probably a (possibly multi-word) description of the signal
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* (e.g. "Hangup") instead of just the stringified version of the macro
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* (e.g. "SIGHUP"). */
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const char *
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signal_name(int signum, char *namebuf, size_t bufsize)
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{
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#if HAVE_DECL_SYS_SIGLIST
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if (signum >= 0 && signum < N_SIGNALS) {
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const char *name = sys_siglist[signum];
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if (name) {
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return name;
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}
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}
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#elif HAVE_SIGDESCR_NP
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const char *name = sigdescr_np(signum);
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if (name) {
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return name;
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}
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#endif
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snprintf(namebuf, bufsize, "signal %d", signum);
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return namebuf;
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}
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void
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xsigaction(int signum, const struct sigaction *new, struct sigaction *old)
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{
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if (sigaction(signum, new, old)) {
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char namebuf[SIGNAL_NAME_BUFSIZE];
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VLOG_FATAL("sigaction(%s) failed (%s)",
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signal_name(signum, namebuf, sizeof namebuf),
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ovs_strerror(errno));
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}
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}
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