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/* Copyright 2019 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "console.h"
#include "extension.h"
#include "flash_log.h"
#include "util.h"
static enum vendor_cmd_rc vc_pop_log_entry(enum vendor_cmd_cc code, void *buf,
size_t input_size,
size_t *response_size)
{
uint32_t prev_timestamp;
int byte_size;
*response_size = 0; /* In case there is an error. */
if (input_size != sizeof(uint32_t))
return VENDOR_RC_BOGUS_ARGS;
memcpy(&prev_timestamp, buf, sizeof(prev_timestamp));
byte_size = flash_log_dequeue_event(
prev_timestamp, buf,
FLASH_LOG_ENTRY_SIZE(MAX_FLASH_LOG_PAYLOAD_SIZE));
if (byte_size >= 0) {
*response_size = byte_size;
return VENDOR_RC_SUCCESS;
}
/* Negative value should fit into a byte. */
*response_size = 1;
((uint8_t *)buf)[0] = -byte_size;
return VENDOR_RC_ERR;
}
DECLARE_VENDOR_COMMAND(VENDOR_CC_POP_LOG_ENTRY, vc_pop_log_entry);
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