xref: /aosp_15_r20/external/flashrom/big_lock.c (revision 0d6140be3aa665ecc836e8907834fcd3e3b018fc)

/* Copyright 2012, Google Inc.
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 *
 *    * Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
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 *      with the distribution.
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 *      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
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 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 */

#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;
}