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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
*
* Copyright (C) 2008 William Jon McCann <jmccann@redhat.com>
*
* 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., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <string.h>
#include <locale.h>
#include <glib.h>
#include <glib/gi18n.h>
#include <glib/gstdio.h>
#include "ck-log-event.h"
#define DEFAULT_LOG_FILENAME LOCALSTATEDIR "/log/ConsoleKit/history"
/* Adapted from auditd auditd-event.c */
static gboolean
open_log_file (const char *filename,
int *fdp,
FILE **filep)
{
int flags;
int fd;
FILE *file;
gboolean ret;
ret = FALSE;
/*
* Likely errors on rotate: ENFILE, ENOMEM, ENOSPC
*/
flags = O_WRONLY | O_APPEND;
#ifdef O_NOFOLLOW
flags |= O_NOFOLLOW;
#endif
retry:
fd = g_open (filename, flags, 0600);
if (fd < 0) {
if (errno == ENOENT) {
/* FIXME: should we just skip if file doesn't exist? */
fd = g_open (filename,
O_CREAT | O_EXCL | O_APPEND,
S_IRUSR | S_IWUSR | S_IRGRP);
if (fd < 0) {
g_warning ("Couldn't create log file %s (%s)",
filename,
g_strerror (errno));
goto out;
}
close (fd);
fd = g_open (filename, flags, 0600);
} else if (errno == ENFILE) {
/* All system descriptors used, try again... */
goto retry;
}
if (fd < 0) {
g_warning ("Couldn't open log file %s (%s)",
filename,
g_strerror (errno));
goto out;
}
}
if (fcntl (fd, F_SETFD, FD_CLOEXEC) == -1) {
close (fd);
g_warning ("Error setting log file CLOEXEC flag (%s)",
g_strerror (errno));
goto out;
}
fchown (fd, 0, 0);
file = fdopen (fd, "a");
if (file == NULL) {
g_warning ("Error setting up log descriptor (%s)",
g_strerror (errno));
close (fd);
goto out;
}
/* Set it to line buffering */
setlinebuf (file);
ret = TRUE;
if (fdp != NULL) {
*fdp = fd;
}
if (filep != NULL) {
*filep = file;
}
out:
return ret;
}
static gboolean
write_log_for_event (CkLogEvent *event)
{
GString *str;
FILE *file;
int fd;
str = g_string_new (NULL);
ck_log_event_to_string (event, str);
if (! open_log_file (DEFAULT_LOG_FILENAME, &fd, &file)) {
exit (1);
}
if (file != NULL) {
int rc;
rc = fprintf (file, "%s\n", str->str);
if (rc <= 0) {
g_warning ("Record was not written to disk (%s)",
g_strerror (errno));
}
} else {
g_warning ("Log file not open for writing");
}
g_string_free (str, TRUE);
return TRUE;
}
int
main (int argc,
char **argv)
{
CkLogEvent event;
memset (&event, 0, sizeof (CkLogEvent));
event.type = CK_LOG_EVENT_SYSTEM_RESTART;
g_get_current_time (&event.timestamp);
write_log_for_event (&event);
return 0;
}
|
