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/* Copyright 2016-2021 Free Software Foundation, Inc.
This file is part of GDB.
This program 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.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */
#include <stdlib.h>
#include <stdio.h>
#include <signal.h>
#include <assert.h>
#include <errno.h>
#ifndef OUTPUT_TXT
# define OUTPUT_TXT "output.txt"
#endif
static void
perror_and_exit (const char *s)
{
perror (s);
exit (1);
}
int
main (int argc, char **argv)
{
int i;
FILE *out;
sigset_t sigset;
int res;
res = sigprocmask (0, NULL, &sigset);
if (res != 0)
perror_and_exit ("sigprocmask");
if (argc > 1)
out = stdout;
else
{
out = fopen (OUTPUT_TXT, "w");
if (out == NULL)
perror_and_exit ("fopen");
}
for (i = 1; i < NSIG; i++)
{
struct sigaction oldact;
fprintf (out, "signal %d: ", i);
res = sigaction (i, NULL, &oldact);
if (res == -1 && errno == EINVAL)
{
/* Some signal numbers in the range are invalid. E.g.,
signals 32 and 33 on GNU/Linux. */
fprintf (out, "invalid");
}
else if (res == -1)
{
perror_and_exit ("sigaction");
}
else
{
int m;
fprintf (out, "sigaction={sa_handler=");
if (oldact.sa_handler == SIG_DFL)
fprintf (out, "SIG_DFL");
else if (oldact.sa_handler == SIG_IGN)
fprintf (out, "SIG_IGN");
else
abort ();
fprintf (out, ", sa_mask=");
for (m = 1; m < NSIG; m++)
fprintf (out, "%c", sigismember (&oldact.sa_mask, m) ? '1' : '0');
fprintf (out, ", sa_flags=%d", oldact.sa_flags);
fprintf (out, "}, masked=%d", sigismember (&sigset, i));
}
fprintf (out, "\n");
}
if (out != stdout)
fclose (out);
return 0;
}
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