bt.c
2.01 KB
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2011 Free Software Foundation, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General
Public License along with this library. If not, see
<http://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <mailutils/diag.h>
#include <mailutils/util.h>
/* Dump a stack trace and terminate current program.
The trace is written to file /tmp/mailutils.PROG.PID, where PROG
is the file name of the program, and PID its PID. */
void
mu_gdb_bt ()
{
int i;
pid_t master_pid = getpid ();
pid_t pid;
static char buf[1024];
static char fname[1024];
int fd;
char *argv[8];
if (!mu_program_name)
abort ();
sprintf (fname, "/tmp/mailutils.%s.%lu",
mu_program_name, (unsigned long) master_pid);
pid = fork ();
if (pid == (pid_t)-1)
abort ();
if (pid)
{
sleep (10);
abort ();
}
for (i = mu_getmaxfd (); i >= 0; i--)
close (i);
fd = open (fname, O_WRONLY|O_CREAT, 0600);
if (fd == -1)
abort ();
dup2 (fd, 1);
dup2 (fd, 2);
close (fd);
argv[0] = "/usr/bin/gdb";
argv[1] = (char*) mu_full_program_name;
sprintf (buf, "%lu", (unsigned long) master_pid);
argv[2] = buf;
argv[3] = "-ex";
argv[4] = "bt";
argv[5] = "-ex";
argv[6] = "kill";
argv[7] = NULL;
execvp (argv[0], argv);
abort ();
}