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/* vi: set et sw=4 ts=4 cino=t0,(0: */
/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of libaccounts-glib
*
* Copyright (C) 2011 Nokia Corporation.
*
* Contact: Alberto Mardegan <alberto.mardegan@canonical.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* version 2.1 as published by the Free Software Foundation.
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#include <glib.h>
#include <sched.h>
#include <sqlite3.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static void
show_help ()
{
printf ("\nUsage:\n"
" %1$s\n"
"Backups the accounts from ~/.config/libaccounts-glib/accounts.db\n"
"into ~/.config/libaccounts-glib/accounts.db.bak\n\n",
g_get_prgname());
}
static gboolean
write_backup (sqlite3 *src, const gchar *filename)
{
sqlite3_backup *backup;
sqlite3 *dest;
gint n_retries;
int ret;
ret = sqlite3_open (filename, &dest);
if (ret != SQLITE_OK) return FALSE;
backup = sqlite3_backup_init (dest, "main", src, "main");
if (!backup)
{
g_warning ("Couldn't start backup");
sqlite3_close (dest);
return FALSE;
}
n_retries = 0;
do
{
ret = sqlite3_backup_step (backup, -1);
if (ret == SQLITE_BUSY || ret == SQLITE_LOCKED)
sqlite3_sleep(250);
n_retries++;
}
while ((ret == SQLITE_BUSY || ret == SQLITE_LOCKED) && n_retries < 5);
sqlite3_backup_finish (backup);
sqlite3_close (dest);
return ret == SQLITE_OK;
}
static gboolean
backup ()
{
gchar *filename, *filename_bak;
sqlite3 *db;
gint n_retries;
int ret;
gboolean success = FALSE;;
filename = g_build_filename (g_get_user_config_dir (),
DATABASE_DIR,
"accounts.db",
NULL);
filename_bak = g_strdup_printf ("%s.bak", filename);
g_debug ("Opening %s", filename);
n_retries = 0;
do
{
ret = sqlite3_open (filename, &db);
if (ret == SQLITE_BUSY)
sched_yield ();
n_retries++;
}
while (ret == SQLITE_BUSY && n_retries < 5);
if (G_UNLIKELY (ret != SQLITE_OK))
{
g_warning ("Couldn't open accounts DB: %s", sqlite3_errmsg (db));
goto error_open;
}
n_retries = 0;
do
{
ret = sqlite3_wal_checkpoint (db, NULL);
if (ret == SQLITE_BUSY)
sched_yield ();
n_retries++;
}
while (ret == SQLITE_BUSY && n_retries < 5);
if (G_UNLIKELY (ret != SQLITE_OK))
g_warning ("Checkpoint failed: %s", sqlite3_errmsg (db));
success = write_backup (db, filename_bak);
sqlite3_close (db);
success = TRUE;
error_open:
g_free (filename_bak);
g_free (filename);
return success;
}
int
main (int argc, char **argv)
{
gboolean success;
g_set_prgname (g_path_get_basename (argv[0]));
if (argc > 1)
{
show_help ();
return 0;
}
success = backup ();
return success ? EXIT_SUCCESS : EXIT_FAILURE;
}
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