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/*
* sigstat - print out useful information about signal arguments
*
* Chet Ramey
* chet@po.cwru.edu
*/
/* Copyright (C) 1991-2009 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 <sys/types.h>
#include <signal.h>
#include <stdio.h>
extern char *strrchr();
static char *signames[NSIG];
char *progname;
void sigstat();
main(argc, argv)
int argc;
char **argv;
{
register int i;
char *t;
if (t = strrchr(argv[0], '/'))
progname = ++t;
else
progname = argv[0];
init_signames();
if (argc == 1) {
for (i = 1; i < NSIG; i++)
sigstat(i);
exit(0);
}
for (i = 1; i < argc; i++)
sigstat(atoi(argv[i]));
exit(0);
}
void
sigstat(sig)
int sig;
{
struct sigaction oact;
char *signame;
sigset_t set, oset;
int blocked;
if (sig < 0 || sig >= NSIG) {
fprintf(stderr, "%s: %d: signal out of range\n", progname, sig);
return;
}
signame = signames[sig];
sigemptyset(&oset);
sigprocmask(SIG_BLOCK, (sigset_t *)NULL, &oset);
if (sigismember(&oset, sig))
printf("%s: signal is blocked\n", signame);
sigaction(sig, (struct sigaction *)NULL, &oact);
if (oact.sa_handler == SIG_IGN)
printf("%s: signal is ignored\n", signame);
else if (oact.sa_handler == SIG_DFL)
printf("%s: signal is defaulted\n", signame);
else
printf("%s: signal is trapped (?)\n", signame);
}
init_signames()
{
register int i;
bzero(signames, sizeof(signames));
#if defined (SIGHUP) /* hangup */
signames[SIGHUP] = "SIGHUP";
#endif
#if defined (SIGINT) /* interrupt */
signames[SIGINT] = "SIGINT";
#endif
#if defined (SIGQUIT) /* quit */
signames[SIGQUIT] = "SIGQUIT";
#endif
#if defined (SIGILL) /* illegal instruction (not reset when caught) */
signames[SIGILL] = "SIGILL";
#endif
#if defined (SIGTRAP) /* trace trap (not reset when caught) */
signames[SIGTRAP] = "SIGTRAP";
#endif
#if defined (SIGABRT) /* */
signames[SIGABRT] = "SIGABRT";
#endif
#if defined (SIGIOT) /* IOT instruction */
signames[SIGIOT] = "SIGIOT";
#endif
#if defined (SIGEMT) /* EMT instruction */
signames[SIGEMT] = "SIGEMT";
#endif
#if defined (SIGFPE) /* floating point exception */
signames[SIGFPE] = "SIGFPE";
#endif
#if defined (SIGKILL) /* kill (cannot be caught or ignored) */
signames[SIGKILL] = "SIGKILL";
#endif
#if defined (SIGBUS) /* bus error */
signames[SIGBUS] = "SIGBUS";
#endif
#if defined (SIGSEGV) /* segmentation violation */
signames[SIGSEGV] = "SIGSEGV";
#endif
#if defined (SIGSYS) /* bad argument to system call */
signames[SIGSYS] = "SIGSYS";
#endif
#if defined (SIGPIPE) /* write on a pipe with no one to read it */
signames[SIGPIPE] = "SIGPIPE";
#endif
#if defined (SIGALRM) /* alarm clock */
signames[SIGALRM] = "SIGALRM";
#endif
#if defined (SIGTERM) /* software termination signal from kill */
signames[SIGTERM] = "SIGTERM";
#endif
#if defined (SIGCLD) /* Like SIGCHLD. */
signames[SIGCLD] = "SIGCLD";
#endif
#if defined (SIGPWR) /* Magic thing for some machines. */
signames[SIGPWR] = "SIGPWR";
#endif
#if defined (SIGPOLL) /* For keyboard input? */
signames[SIGPOLL] = "SIGPOLL";
#endif
#if defined (SIGURG) /* urgent condition on IO channel */
signames[SIGURG] = "SIGURG";
#endif
#if defined (SIGSTOP) /* sendable stop signal not from tty */
signames[SIGSTOP] = "SIGSTOP";
#endif
#if defined (SIGTSTP) /* stop signal from tty */
signames[SIGTSTP] = "SIGTSTP";
#endif
#if defined (SIGCONT) /* continue a stopped process */
signames[SIGCONT] = "SIGCONT";
#endif
#if defined (SIGCHLD) /* to parent on child stop or exit */
signames[SIGCHLD] = "SIGCHLD";
#endif
#if defined (SIGTTIN) /* to readers pgrp upon background tty read */
signames[SIGTTIN] = "SIGTTIN";
#endif
#if defined (SIGTTOU) /* like TTIN for output if (tp->t_local<OSTOP) */
signames[SIGTTOU] = "SIGTTOU";
#endif
#if defined (SIGIO) /* input/output possible signal */
signames[SIGIO] = "SIGIO";
#endif
#if defined (SIGXCPU) /* exceeded CPU time limit */
signames[SIGXCPU] = "SIGXCPU";
#endif
#if defined (SIGXFSZ) /* exceeded file size limit */
signames[SIGXFSZ] = "SIGXFSZ";
#endif
#if defined (SIGVTALRM) /* virtual time alarm */
signames[SIGVTALRM] = "SIGVTALRM";
#endif
#if defined (SIGPROF) /* profiling time alarm */
signames[SIGPROF] = "SIGPROF";
#endif
#if defined (SIGWINCH) /* window changed */
signames[SIGWINCH] = "SIGWINCH";
#endif
#if defined (SIGLOST) /* resource lost (eg, record-lock lost) */
signames[SIGLOST] = "SIGLOST";
#endif
#if defined (SIGUSR1) /* user defined signal 1 */
signames[SIGUSR1] = "SIGUSR1";
#endif
#if defined (SIGUSR2) /* user defined signal 2 */
signames[SIGUSR2] = "SIGUSR2";
#endif
#if defined (SIGMSG) /* HFT input data pending */
signames[SIGMSG] = "SIGMSG";
#endif
#if defined (SIGPWR) /* power failure imminent (save your data) */
signames[SIGPWR] = "SIGPWR";
#endif
#if defined (SIGDANGER) /* system crash imminent */
signames[SIGDANGER] = "SIGDANGER";
#endif
#if defined (SIGMIGRATE) /* migrate process to another CPU */
signames[SIGMIGRATE] = "SIGMIGRATE";
#endif
#if defined (SIGPRE) /* programming error */
signames[SIGPRE] = "SIGPRE";
#endif
#if defined (SIGGRANT) /* HFT monitor mode granted */
signames[SIGGRANT] = "SIGGRANT";
#endif
#if defined (SIGRETRACT) /* HFT monitor mode retracted */
signames[SIGRETRACT] = "SIGRETRACT";
#endif
#if defined (SIGSOUND) /* HFT sound sequence has completed */
signames[SIGSOUND] = "SIGSOUND";
#endif
for (i = 0; i < NSIG; i++)
if (signames[i] == (char *)NULL) {
signames[i] = (char *)malloc (16);;
sprintf (signames[i], "signal %d", i);
}
}
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