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