mirror of https://github.com/n-hys/bash.git
447 lines
11 KiB
C
447 lines
11 KiB
C
/* signames.c -- Create an array of signal names. */
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/* Copyright (C) 2006-2020 Free Software Foundation, Inc.
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This file is part of GNU Bash, the Bourne Again SHell.
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Bash is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Bash 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Bash. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <signal.h>
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#if defined (HAVE_STDLIB_H)
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# include <stdlib.h>
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#else
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# include "ansi_stdlib.h"
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#endif /* HAVE_STDLIB_H */
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#if !defined (NSIG)
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# define NSIG 64
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#endif
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/*
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* Special traps:
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* EXIT == 0
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* DEBUG == NSIG
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* ERR == NSIG+1
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* RETURN == NSIG+2
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*/
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#define LASTSIG NSIG+2
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char *signal_names[2 * (LASTSIG)];
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#define signal_names_size (sizeof(signal_names)/sizeof(signal_names[0]))
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/* AIX 4.3 defines SIGRTMIN and SIGRTMAX as 888 and 999 respectively.
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I don't want to allocate so much unused space for the intervening signal
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numbers, so we just punt if SIGRTMAX is past the bounds of the
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signal_names array (handled in configure). */
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#if defined (SIGRTMAX) && defined (UNUSABLE_RT_SIGNALS)
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# undef SIGRTMAX
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# undef SIGRTMIN
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#endif
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#if defined (SIGRTMAX) || defined (SIGRTMIN)
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# define RTLEN 14
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# define RTLIM 256
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#endif
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#if defined (BUILDTOOL)
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extern char *progname;
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#endif
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void
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initialize_signames ()
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{
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register int i;
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#if defined (SIGRTMAX) || defined (SIGRTMIN)
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int rtmin, rtmax, rtcnt;
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#endif
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for (i = 1; i < signal_names_size; i++)
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signal_names[i] = (char *)NULL;
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/* `signal' 0 is what we do on exit. */
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signal_names[0] = "EXIT";
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/* Place signal names which can be aliases for more common signal
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names first. This allows (for example) SIGABRT to overwrite SIGLOST. */
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/* POSIX 1003.1b-1993 real time signals, but take care of incomplete
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implementations. Acoording to the standard, both, SIGRTMIN and
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SIGRTMAX must be defined, SIGRTMIN must be strictly less than
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SIGRTMAX, and the difference must be at least 7, that is, there
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must be at least eight distinct real time signals. */
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/* The generated signal names are SIGRTMIN, SIGRTMIN+1, ...,
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SIGRTMIN+x, SIGRTMAX-x, ..., SIGRTMAX-1, SIGRTMAX. If the number
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of RT signals is odd, there is an extra SIGRTMIN+(x+1).
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These names are the ones used by ksh and /usr/xpg4/bin/sh on SunOS5. */
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#if defined (SIGRTMIN)
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rtmin = SIGRTMIN;
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signal_names[rtmin] = "SIGRTMIN";
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#endif
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#if defined (SIGRTMAX)
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rtmax = SIGRTMAX;
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signal_names[rtmax] = "SIGRTMAX";
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#endif
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#if defined (SIGRTMAX) && defined (SIGRTMIN)
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if (rtmax > rtmin)
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{
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rtcnt = (rtmax - rtmin - 1) / 2;
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/* croak if there are too many RT signals */
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if (rtcnt >= RTLIM/2)
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{
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rtcnt = RTLIM/2-1;
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#ifdef BUILDTOOL
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fprintf(stderr, "%s: error: more than %d real time signals, fix `%s'\n",
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progname, RTLIM, progname);
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#endif
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}
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for (i = 1; i <= rtcnt; i++)
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{
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signal_names[rtmin+i] = (char *)malloc(RTLEN);
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if (signal_names[rtmin+i])
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sprintf (signal_names[rtmin+i], "SIGRTMIN+%d", i);
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signal_names[rtmax-i] = (char *)malloc(RTLEN);
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if (signal_names[rtmax-i])
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sprintf (signal_names[rtmax-i], "SIGRTMAX-%d", i);
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}
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if (rtcnt < RTLIM/2-1 && rtcnt != (rtmax-rtmin)/2)
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{
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/* Need an extra RTMIN signal */
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signal_names[rtmin+rtcnt+1] = (char *)malloc(RTLEN);
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if (signal_names[rtmin+rtcnt+1])
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sprintf (signal_names[rtmin+rtcnt+1], "SIGRTMIN+%d", rtcnt+1);
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}
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}
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#endif /* SIGRTMIN && SIGRTMAX */
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#if defined (SIGLOST) /* resource lost (eg, record-lock lost) */
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signal_names[SIGLOST] = "SIGLOST";
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#endif
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/* AIX */
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#if defined (SIGMSG) /* HFT input data pending */
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signal_names[SIGMSG] = "SIGMSG";
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#endif
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#if defined (SIGDANGER) /* system crash imminent */
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signal_names[SIGDANGER] = "SIGDANGER";
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#endif
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#if defined (SIGMIGRATE) /* migrate process to another CPU */
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signal_names[SIGMIGRATE] = "SIGMIGRATE";
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#endif
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#if defined (SIGPRE) /* programming error */
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signal_names[SIGPRE] = "SIGPRE";
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#endif
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#if defined (SIGPHONE) /* Phone interrupt */
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signal_names[SIGPHONE] = "SIGPHONE";
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#endif
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#if defined (SIGVIRT) /* AIX virtual time alarm */
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signal_names[SIGVIRT] = "SIGVIRT";
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#endif
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#if defined (SIGTINT) /* Interrupt */
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signal_names[SIGTINT] = "SIGTINT";
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#endif
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#if defined (SIGALRM1) /* m:n condition variables */
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signal_names[SIGALRM1] = "SIGALRM1";
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#endif
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#if defined (SIGWAITING) /* m:n scheduling */
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signal_names[SIGWAITING] = "SIGWAITING";
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#endif
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#if defined (SIGGRANT) /* HFT monitor mode granted */
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signal_names[SIGGRANT] = "SIGGRANT";
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#endif
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#if defined (SIGKAP) /* keep alive poll from native keyboard */
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signal_names[SIGKAP] = "SIGKAP";
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#endif
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#if defined (SIGRETRACT) /* HFT monitor mode retracted */
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signal_names[SIGRETRACT] = "SIGRETRACT";
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#endif
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#if defined (SIGSOUND) /* HFT sound sequence has completed */
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signal_names[SIGSOUND] = "SIGSOUND";
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#endif
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#if defined (SIGSAK) /* Secure Attention Key */
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signal_names[SIGSAK] = "SIGSAK";
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#endif
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#if defined (SIGCPUFAIL) /* Predictive processor deconfiguration */
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signal_names[SIGCPUFAIL] = "SIGCPUFAIL";
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#endif
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#if defined (SIGAIO) /* Asynchronous I/O */
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signal_names[SIGAIO] = "SIGAIO";
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#endif
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#if defined (SIGLAB) /* Security label changed */
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signal_names[SIGLAB] = "SIGLAB";
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#endif
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/* SunOS5 */
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#if defined (SIGLWP) /* Solaris: special signal used by thread library */
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signal_names[SIGLWP] = "SIGLWP";
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#endif
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#if defined (SIGFREEZE) /* Solaris: special signal used by CPR */
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signal_names[SIGFREEZE] = "SIGFREEZE";
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#endif
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#if defined (SIGTHAW) /* Solaris: special signal used by CPR */
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signal_names[SIGTHAW] = "SIGTHAW";
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#endif
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#if defined (SIGCANCEL) /* Solaris: thread cancellation signal used by libthread */
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signal_names[SIGCANCEL] = "SIGCANCEL";
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#endif
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#if defined (SIGXRES) /* Solaris: resource control exceeded */
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signal_names[SIGXRES] = "SIGXRES";
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#endif
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#if defined (SIGJVM1) /* Solaris: Java Virtual Machine 1 */
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signal_names[SIGJVM1] = "SIGJVM1";
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#endif
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#if defined (SIGJVM2) /* Solaris: Java Virtual Machine 2 */
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signal_names[SIGJVM2] = "SIGJVM2";
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#endif
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#if defined (SIGDGTIMER1)
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signal_names[SIGDGTIMER1] = "SIGDGTIMER1";
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#endif
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#if defined (SIGDGTIMER2)
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signal_names[SIGDGTIMER2] = "SIGDGTIMER2";
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#endif
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#if defined (SIGDGTIMER3)
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signal_names[SIGDGTIMER3] = "SIGDGTIMER3";
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#endif
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#if defined (SIGDGTIMER4)
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signal_names[SIGDGTIMER4] = "SIGDGTIMER4";
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#endif
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#if defined (SIGDGNOTIFY)
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signal_names[SIGDGNOTIFY] = "SIGDGNOTIFY";
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#endif
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/* Apollo */
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#if defined (SIGAPOLLO)
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signal_names[SIGAPOLLO] = "SIGAPOLLO";
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#endif
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/* HP-UX */
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#if defined (SIGDIL) /* DIL signal (?) */
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signal_names[SIGDIL] = "SIGDIL";
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#endif
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/* System V */
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#if defined (SIGCLD) /* Like SIGCHLD. */
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signal_names[SIGCLD] = "SIGCLD";
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#endif
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#if defined (SIGPWR) /* power state indication */
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signal_names[SIGPWR] = "SIGPWR";
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#endif
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#if defined (SIGPOLL) /* Pollable event (for streams) */
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signal_names[SIGPOLL] = "SIGPOLL";
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#endif
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/* Unknown */
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#if defined (SIGWINDOW)
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signal_names[SIGWINDOW] = "SIGWINDOW";
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#endif
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/* Linux */
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#if defined (SIGSTKFLT)
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signal_names[SIGSTKFLT] = "SIGSTKFLT";
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#endif
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/* FreeBSD */
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#if defined (SIGTHR) /* thread interrupt */
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signal_names[SIGTHR] = "SIGTHR";
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#endif
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/* Common */
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#if defined (SIGHUP) /* hangup */
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signal_names[SIGHUP] = "SIGHUP";
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#endif
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#if defined (SIGINT) /* interrupt */
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signal_names[SIGINT] = "SIGINT";
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#endif
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#if defined (SIGQUIT) /* quit */
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signal_names[SIGQUIT] = "SIGQUIT";
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#endif
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#if defined (SIGILL) /* illegal instruction (not reset when caught) */
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signal_names[SIGILL] = "SIGILL";
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#endif
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#if defined (SIGTRAP) /* trace trap (not reset when caught) */
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signal_names[SIGTRAP] = "SIGTRAP";
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#endif
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#if defined (SIGIOT) /* IOT instruction */
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signal_names[SIGIOT] = "SIGIOT";
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#endif
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#if defined (SIGABRT) /* Cause current process to dump core. */
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signal_names[SIGABRT] = "SIGABRT";
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#endif
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#if defined (SIGEMT) /* EMT instruction */
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signal_names[SIGEMT] = "SIGEMT";
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#endif
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#if defined (SIGFPE) /* floating point exception */
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signal_names[SIGFPE] = "SIGFPE";
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#endif
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#if defined (SIGKILL) /* kill (cannot be caught or ignored) */
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signal_names[SIGKILL] = "SIGKILL";
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#endif
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#if defined (SIGBUS) /* bus error */
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signal_names[SIGBUS] = "SIGBUS";
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#endif
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#if defined (SIGSEGV) /* segmentation violation */
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signal_names[SIGSEGV] = "SIGSEGV";
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#endif
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#if defined (SIGSYS) /* bad argument to system call */
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signal_names[SIGSYS] = "SIGSYS";
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#endif
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#if defined (SIGPIPE) /* write on a pipe with no one to read it */
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signal_names[SIGPIPE] = "SIGPIPE";
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#endif
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#if defined (SIGALRM) /* alarm clock */
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signal_names[SIGALRM] = "SIGALRM";
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#endif
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#if defined (SIGTERM) /* software termination signal from kill */
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signal_names[SIGTERM] = "SIGTERM";
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#endif
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#if defined (SIGURG) /* urgent condition on IO channel */
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signal_names[SIGURG] = "SIGURG";
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#endif
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#if defined (SIGSTOP) /* sendable stop signal not from tty */
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signal_names[SIGSTOP] = "SIGSTOP";
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#endif
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#if defined (SIGTSTP) /* stop signal from tty */
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signal_names[SIGTSTP] = "SIGTSTP";
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#endif
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#if defined (SIGCONT) /* continue a stopped process */
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signal_names[SIGCONT] = "SIGCONT";
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#endif
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#if defined (SIGCHLD) /* to parent on child stop or exit */
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signal_names[SIGCHLD] = "SIGCHLD";
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#endif
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#if defined (SIGTTIN) /* to readers pgrp upon background tty read */
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signal_names[SIGTTIN] = "SIGTTIN";
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#endif
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#if defined (SIGTTOU) /* like TTIN for output if (tp->t_local<OSTOP) */
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signal_names[SIGTTOU] = "SIGTTOU";
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#endif
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#if defined (SIGIO) /* input/output possible signal */
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signal_names[SIGIO] = "SIGIO";
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#endif
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#if defined (SIGXCPU) /* exceeded CPU time limit */
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signal_names[SIGXCPU] = "SIGXCPU";
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#endif
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#if defined (SIGXFSZ) /* exceeded file size limit */
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signal_names[SIGXFSZ] = "SIGXFSZ";
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#endif
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#if defined (SIGVTALRM) /* virtual time alarm */
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signal_names[SIGVTALRM] = "SIGVTALRM";
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#endif
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#if defined (SIGPROF) /* profiling time alarm */
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signal_names[SIGPROF] = "SIGPROF";
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#endif
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#if defined (SIGWINCH) /* window changed */
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signal_names[SIGWINCH] = "SIGWINCH";
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#endif
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/* 4.4 BSD */
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#if defined (SIGINFO) && !defined (_SEQUENT_) /* information request */
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signal_names[SIGINFO] = "SIGINFO";
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#endif
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#if defined (SIGUSR1) /* user defined signal 1 */
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signal_names[SIGUSR1] = "SIGUSR1";
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#endif
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#if defined (SIGUSR2) /* user defined signal 2 */
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signal_names[SIGUSR2] = "SIGUSR2";
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#endif
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#if defined (SIGKILLTHR) /* BeOS: Kill Thread */
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signal_names[SIGKILLTHR] = "SIGKILLTHR";
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#endif
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for (i = 0; i < NSIG; i++)
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if (signal_names[i] == (char *)NULL)
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{
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signal_names[i] = (char *)malloc (18);
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if (signal_names[i])
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sprintf (signal_names[i], "SIGJUNK(%d)", i);
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}
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signal_names[NSIG] = "DEBUG";
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signal_names[NSIG+1] = "ERR";
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signal_names[NSIG+2] = "RETURN";
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}
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