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/* Copyright (c) 2013 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.
*
* Tests for vboot_kernel.c
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "cgptlib.h"
#include "gbb_header.h"
#include "gpt.h"
#include "host_common.h"
#include "load_kernel_fw.h"
#include "test_common.h"
#include "vboot_api.h"
#include "vboot_common.h"
#include "vboot_kernel.h"
#include "vboot_nvstorage.h"
#define LOGCALL(fmt, args...) sprintf(call_log + strlen(call_log), fmt, ##args)
#define TEST_CALLS(expect_log) TEST_STR_EQ(call_log, expect_log, " calls")
/* Mock data */
static char call_log[4096];
static int disk_call_to_fail;
static int disk_calls;
static int gpt_init_fail;
static GoogleBinaryBlockHeader gbb;
static VbExDiskHandle_t handle;
static VbNvContext vnc;
static uint8_t shared_data[VB_SHARED_DATA_MIN_SIZE];
static VbSharedDataHeader *shared = (VbSharedDataHeader *)shared_data;
static LoadKernelParams lkp;
static void ResetCallLog(void)
{
*call_log = 0;
}
/**
* Reset mock data (for use before each test)
*/
static void ResetMocks(void)
{
ResetCallLog();
disk_call_to_fail = 0;
disk_calls = 0;
gpt_init_fail = 0;
memset(&gbb, 0, sizeof(gbb));
gbb.major_version = GBB_MAJOR_VER;
gbb.minor_version = GBB_MINOR_VER;
gbb.flags = 0;
memset(&vnc, 0, sizeof(vnc));
VbNvSetup(&vnc);
VbNvTeardown(&vnc); /* So CRC gets generated */
memset(&shared_data, 0, sizeof(shared_data));
VbSharedDataInit(shared, sizeof(shared_data));
memset(&lkp, 0, sizeof(lkp));
lkp.nv_context = &vnc;
lkp.shared_data_blob = shared;
lkp.gbb_data = &gbb;
lkp.bytes_per_lba = 512;
lkp.ending_lba = 1023;
}
/* Mocks */
VbError_t VbExDiskRead(VbExDiskHandle_t handle, uint64_t lba_start,
uint64_t lba_count, void *buffer)
{
LOGCALL("VbExDiskRead(h, %d, %d)\n", (int)lba_start, (int)lba_count);
if (++disk_calls == disk_call_to_fail)
return VBERROR_SIMULATED;
return VBERROR_SUCCESS;
}
VbError_t VbExDiskWrite(VbExDiskHandle_t handle, uint64_t lba_start,
uint64_t lba_count, const void *buffer)
{
LOGCALL("VbExDiskWrite(h, %d, %d)\n", (int)lba_start, (int)lba_count);
if (++disk_calls == disk_call_to_fail)
return VBERROR_SIMULATED;
return VBERROR_SUCCESS;
}
int GptInit(GptData *gpt)
{
return gpt_init_fail;
}
/**
* Test reading/writing GPT
*/
static void ReadWriteGptTest(void)
{
GptData g;
GptHeader *h;
g.sector_bytes = 512;
g.drive_sectors = 1024;
ResetMocks();
TEST_EQ(AllocAndReadGptData(handle, &g), 0, "AllocAndRead");
TEST_CALLS("VbExDiskRead(h, 1, 1)\n"
"VbExDiskRead(h, 2, 32)\n"
"VbExDiskRead(h, 991, 32)\n"
"VbExDiskRead(h, 1023, 1)\n");
ResetCallLog();
TEST_EQ(WriteAndFreeGptData(handle, &g), 0, "WriteAndFree");
TEST_CALLS("");
/* Data which is changed is written */
ResetMocks();
AllocAndReadGptData(handle, &g);
g.modified |= GPT_MODIFIED_HEADER1 | GPT_MODIFIED_ENTRIES1;
ResetCallLog();
TEST_EQ(WriteAndFreeGptData(handle, &g), 0, "WriteAndFree mod 1");
TEST_CALLS("VbExDiskWrite(h, 1, 1)\n"
"VbExDiskWrite(h, 2, 32)\n");
/* Data which is changed is written */
ResetMocks();
AllocAndReadGptData(handle, &g);
g.modified = -1;
ResetCallLog();
TEST_EQ(WriteAndFreeGptData(handle, &g), 0, "WriteAndFree mod all");
TEST_CALLS("VbExDiskWrite(h, 1, 1)\n"
"VbExDiskWrite(h, 2, 32)\n"
"VbExDiskWrite(h, 991, 32)\n"
"VbExDiskWrite(h, 1023, 1)\n");
/* If legacy signature, don't modify GPT header/entries 1 */
ResetMocks();
AllocAndReadGptData(handle, &g);
h = (GptHeader *)g.primary_header;
memcpy(h->signature, GPT_HEADER_SIGNATURE2, GPT_HEADER_SIGNATURE_SIZE);
g.modified = -1;
ResetCallLog();
TEST_EQ(WriteAndFreeGptData(handle, &g), 0, "WriteAndFree mod all");
TEST_CALLS("VbExDiskWrite(h, 991, 32)\n"
"VbExDiskWrite(h, 1023, 1)\n");
/* Error reading */
ResetMocks();
disk_call_to_fail = 1;
TEST_NEQ(AllocAndReadGptData(handle, &g), 0, "AllocAndRead disk fail");
WriteAndFreeGptData(handle, &g);
/* Error writing */
ResetMocks();
disk_call_to_fail = 5;
AllocAndReadGptData(handle, &g);
g.modified = -1;
TEST_NEQ(WriteAndFreeGptData(handle, &g), 0, "WriteAndFree disk fail");
}
/**
* Trivial invalid calls to LoadKernel()
*/
static void InvalidParamsTest(void)
{
ResetMocks();
lkp.bytes_per_lba = 0;
TEST_EQ(LoadKernel(&lkp), VBERROR_INVALID_PARAMETER, "Bad lba size");
ResetMocks();
lkp.ending_lba = 0;
TEST_EQ(LoadKernel(&lkp), VBERROR_INVALID_PARAMETER, "Bad lba count");
ResetMocks();
lkp.bytes_per_lba = 128*1024;
TEST_EQ(LoadKernel(&lkp), VBERROR_INVALID_PARAMETER, "Huge lba size");
ResetMocks();
disk_call_to_fail = 1;
TEST_EQ(LoadKernel(&lkp), VBERROR_NO_KERNEL_FOUND, "Can't read disk");
ResetMocks();
gpt_init_fail = 1;
TEST_EQ(LoadKernel(&lkp), VBERROR_NO_KERNEL_FOUND, "Bad GPT");
}
int main(void)
{
ReadWriteGptTest();
InvalidParamsTest();
return gTestSuccess ? 0 : 255;
}
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