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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/* NetworkManager -- Network link manager
*
* 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 2 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Copyright (C) 2006 - 2008 Red Hat, Inc.
* Copyright (C) 2006 - 2008 Novell, Inc.
*/
#define _GNU_SOURCE
#include <dlfcn.h>
#include <syslog.h>
#include <execinfo.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <execinfo.h>
#include "nm-logging.h"
#include "nm-utils.h"
static void
fallback_get_backtrace (void)
{
void *frames[64];
Dl_info info;
size_t size;
guint32 i;
const char *name;
size = backtrace (frames, G_N_ELEMENTS (frames));
syslog (LOG_CRIT, "******************* START **********************************");
for (i = 0; i < size; i++) {
dladdr (frames[i], &info);
name = (info.dli_fname && *info.dli_fname) ? info.dli_fname : "(vdso)";
if (info.dli_saddr) {
syslog (LOG_CRIT, "Frame %d: %s (%s+0x%lx) [%p]",
i, name,
info.dli_sname,
(gulong)(frames[i] - info.dli_saddr),
frames[i]);
} else {
syslog (LOG_CRIT, "Frame %d: %s (%p+0x%lx) [%p]",
i, name,
info.dli_fbase,
(gulong)(frames[i] - info.dli_saddr),
frames[i]);
}
}
syslog (LOG_CRIT, "******************* END **********************************");
}
static gboolean
crashlogger_get_backtrace (void)
{
gboolean success = FALSE;
int pid;
pid = fork();
if (pid > 0)
{
/* Wait for the child to finish */
int estatus;
if (waitpid (pid, &estatus, 0) != -1)
{
/* Only succeed if the crashlogger succeeded */
if (WIFEXITED (estatus) && (WEXITSTATUS (estatus) == 0))
success = TRUE;
}
}
else if (pid == 0)
{
/* Child process */
execl (LIBEXECDIR"/nm-crash-logger",
LIBEXECDIR"/nm-crash-logger", NULL);
}
return success;
}
void
nm_logging_backtrace (void)
{
struct stat s;
gboolean fallback = TRUE;
/* Try to use gdb via nm-crash-logger if it exists, since
* we get much better information out of it. Otherwise
* fall back to execinfo.
*/
if (stat (LIBEXECDIR"/nm-crash-logger", &s) == 0)
fallback = crashlogger_get_backtrace () ? FALSE : TRUE;
if (fallback)
fallback_get_backtrace ();
}
static void
nm_log_handler (const gchar * log_domain,
GLogLevelFlags log_level,
const gchar * message,
gpointer ignored)
{
int syslog_priority;
switch (log_level)
{
case G_LOG_LEVEL_ERROR:
syslog_priority = LOG_CRIT;
break;
case G_LOG_LEVEL_CRITICAL:
syslog_priority = LOG_ERR;
break;
case G_LOG_LEVEL_WARNING:
syslog_priority = LOG_WARNING;
break;
case G_LOG_LEVEL_MESSAGE:
syslog_priority = LOG_NOTICE;
break;
case G_LOG_LEVEL_DEBUG:
syslog_priority = LOG_DEBUG;
break;
case G_LOG_LEVEL_INFO:
default:
syslog_priority = LOG_INFO;
break;
}
syslog (syslog_priority, "%s", message);
}
void
nm_logging_setup (gboolean become_daemon)
{
if (become_daemon)
openlog (G_LOG_DOMAIN, 0, LOG_DAEMON);
else
openlog (G_LOG_DOMAIN, LOG_CONS | LOG_PERROR, LOG_USER);
g_log_set_handler (G_LOG_DOMAIN,
G_LOG_LEVEL_MASK | G_LOG_FLAG_FATAL | G_LOG_FLAG_RECURSION,
nm_log_handler,
NULL);
}
void
nm_logging_shutdown (void)
{
closelog ();
}
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