blob: a2c3faf5a0d05b6dcd10dd6456c61644ff583053 [file] [log] [blame]
/* Copyright 2012, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdbool.h>
#include "big_lock.h"
#include "ipc_lock.h"
#include "flash.h"
#define LOCKFILE_NAME "firmware_utility_lock"
static struct ipc_lock big_lock = LOCKFILE_INIT(LOCKFILE_NAME);
/** Big lock acquisition status. */
static bool g_big_lock_acquired = false;
int acquire_big_lock(int timeout_secs)
{
msg_gdbg("Acquiring lock (timeout=%d sec)...\n", timeout_secs);
int ret = acquire_lock(&big_lock, timeout_secs * 1000);
if (ret < 0) {
msg_gerr("Could not acquire lock.\n");
} else {
g_big_lock_acquired = true;
msg_gdbg("Lock acquired.\n");
}
return ret;
}
int release_big_lock(void)
{
int ret = 0;
if (g_big_lock_acquired) {
ret = release_lock(&big_lock);
g_big_lock_acquired = false;
}
return ret;
}