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https://sourceware.org/git/binutils-gdb.git
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102 lines
2.2 KiB
C
102 lines
2.2 KiB
C
/* Copyright 2016-2018 Free Software Foundation, Inc.
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This file is part of GDB.
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This program 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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This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */
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#include <stdlib.h>
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#include <stdio.h>
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#include <signal.h>
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#include <assert.h>
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#include <errno.h>
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#ifndef OUTPUT_TXT
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# define OUTPUT_TXT "output.txt"
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#endif
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static void
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perror_and_exit (const char *s)
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{
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perror (s);
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exit (1);
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}
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int
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main (int argc, char **argv)
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{
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int i;
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FILE *out;
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sigset_t sigset;
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int res;
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res = sigprocmask (0, NULL, &sigset);
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if (res != 0)
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perror_and_exit ("sigprocmask");
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if (argc > 1)
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out = stdout;
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else
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{
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out = fopen (OUTPUT_TXT, "w");
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if (out == NULL)
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perror_and_exit ("fopen");
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}
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for (i = 1; i < NSIG; i++)
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{
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struct sigaction oldact;
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fprintf (out, "signal %d: ", i);
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res = sigaction (i, NULL, &oldact);
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if (res == -1 && errno == EINVAL)
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{
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/* Some signal numbers in the range are invalid. E.g.,
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signals 32 and 33 on GNU/Linux. */
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fprintf (out, "invalid");
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}
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else if (res == -1)
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{
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perror_and_exit ("sigaction");
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}
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else
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{
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int m;
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fprintf (out, "sigaction={sa_handler=");
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if (oldact.sa_handler == SIG_DFL)
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fprintf (out, "SIG_DFL");
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else if (oldact.sa_handler == SIG_IGN)
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fprintf (out, "SIG_IGN");
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else
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abort ();
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fprintf (out, ", sa_mask=");
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for (m = 1; m < NSIG; m++)
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fprintf (out, "%c", sigismember (&oldact.sa_mask, m) ? '1' : '0');
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fprintf (out, ", sa_flags=%d", oldact.sa_flags);
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fprintf (out, "}, masked=%d", sigismember (&sigset, i));
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}
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fprintf (out, "\n");
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}
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if (out != stdout)
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fclose (out);
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return 0;
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}
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