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/* Copyright (c) 2014 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 firmware 2common.c
*/
#include "2common.h"
#include "2sysincludes.h"
#include "test_common.h"
#include "vboot_struct.h" /* For old struct sizes */
/*
* Test array size macro.
*/
static void test_array_size(void)
{
uint8_t arr1[12];
uint32_t arr2[7];
uint64_t arr3[9];
TEST_EQ(ARRAY_SIZE(arr1), 12, "ARRAYSIZE(uint8_t)");
TEST_EQ(ARRAY_SIZE(arr2), 7, "ARRAYSIZE(uint32_t)");
TEST_EQ(ARRAY_SIZE(arr3), 9, "ARRAYSIZE(uint64_t)");
}
/*
* Test struct packing for vboot_struct.h structs which are passed between
* firmware and OS, or passed between different phases of firmware.
*/
static void test_struct_packing(void)
{
/* Test vboot2 versions of vboot1 structs */
TEST_EQ(EXPECTED_VB2_PACKED_KEY_SIZE,
sizeof(struct vb2_packed_key),
"sizeof(vb2_packed_key)");
TEST_EQ(EXPECTED_VB2_GBB_HEADER_SIZE,
sizeof(struct vb2_gbb_header),
"sizeof(vb2_gbb_header)");
/* And make sure they're the same as their vboot1 equivalents */
TEST_EQ(EXPECTED_VB2_PACKED_KEY_SIZE,
EXPECTED_VBPUBLICKEY_SIZE,
"vboot1->2 packed key sizes same");
}
/**
* Test memory compare functions
*/
static void test_memcmp(void)
{
TEST_EQ(vb2_safe_memcmp("foo", "foo", 3), 0, "memcmp equal");
TEST_NEQ(vb2_safe_memcmp("foo1", "foo2", 4), 0, "memcmp different");
TEST_EQ(vb2_safe_memcmp("foo1", "foo2", 0), 0, "memcmp 0-size");
}
/**
* Test alignment functions
*/
static void test_align(void)
{
uint64_t buf[4];
uint8_t *p0, *ptr;
uint32_t size;
/* Already aligned */
p0 = (uint8_t *)buf;
ptr = p0;
size = 16;
TEST_SUCC(vb2_align(&ptr, &size, 4, 16), "vb2_align() aligned");
TEST_EQ(vb2_offset_of(p0, ptr), 0, "ptr");
TEST_EQ(size, 16, " size");
TEST_EQ(vb2_align(&ptr, &size, 4, 17),
VB2_ERROR_ALIGN_SIZE, "vb2_align() small");
/* Offset */
ptr = p0 + 1;
size = 15;
TEST_SUCC(vb2_align(&ptr, &size, 4, 12), "vb2_align() offset");
TEST_EQ(vb2_offset_of(p0, ptr), 4, "ptr");
TEST_EQ(size, 12, " size");
/* Offset, now too small */
ptr = p0 + 1;
size = 15;
TEST_EQ(vb2_align(&ptr, &size, 4, 15),
VB2_ERROR_ALIGN_SIZE, "vb2_align() offset small");
/* Offset, too small even to align */
ptr = p0 + 1;
size = 1;
TEST_EQ(vb2_align(&ptr, &size, 4, 1),
VB2_ERROR_ALIGN_BIGGER_THAN_SIZE, "vb2_align() offset tiny");
}
/**
* Test work buffer functions
*/
static void test_workbuf(void)
{
uint64_t buf[8] __attribute__ ((aligned (VB2_WORKBUF_ALIGN)));
uint8_t *p0 = (uint8_t *)buf, *ptr;
struct vb2_workbuf wb;
/* NOTE: There are several magic numbers below which assume that
* VB2_WORKBUF_ALIGN == 16 */
/* Init */
vb2_workbuf_init(&wb, p0, 64);
TEST_EQ(vb2_offset_of(p0, wb.buf), 0, "Workbuf init aligned");
TEST_EQ(wb.size, 64, " size");
vb2_workbuf_init(&wb, p0 + 4, 64);
TEST_EQ(vb2_offset_of(p0, wb.buf), VB2_WORKBUF_ALIGN,
"Workbuf init unaligned");
TEST_EQ(wb.size, 64 - VB2_WORKBUF_ALIGN + 4, " size");
vb2_workbuf_init(&wb, p0 + 2, 5);
TEST_EQ(wb.size, 0, "Workbuf init tiny unaligned size");
/* Alloc rounds up */
vb2_workbuf_init(&wb, p0, 64);
ptr = vb2_workbuf_alloc(&wb, 22);
TEST_EQ(vb2_offset_of(p0, ptr), 0, "Workbuf alloc");
TEST_EQ(vb2_offset_of(p0, wb.buf), 32, " buf");
TEST_EQ(wb.size, 32, " size");
vb2_workbuf_init(&wb, p0, 32);
TEST_PTR_EQ(vb2_workbuf_alloc(&wb, 33), NULL, "Workbuf alloc too big");
/* Free reverses alloc */
vb2_workbuf_init(&wb, p0, 32);
vb2_workbuf_alloc(&wb, 22);
vb2_workbuf_free(&wb, 22);
TEST_EQ(vb2_offset_of(p0, wb.buf), 0, "Workbuf free buf");
TEST_EQ(wb.size, 32, " size");
/* Realloc keeps same pointer as alloc */
vb2_workbuf_init(&wb, p0, 64);
vb2_workbuf_alloc(&wb, 6);
ptr = vb2_workbuf_realloc(&wb, 6, 21);
TEST_EQ(vb2_offset_of(p0, ptr), 0, "Workbuf realloc");
TEST_EQ(vb2_offset_of(p0, wb.buf), 32, " buf");
TEST_EQ(wb.size, 32, " size");
}
/**
* Helper functions not dependent on specific key sizes
*/
static void test_helper_functions(void)
{
{
struct vb2_packed_key k = {.key_offset = sizeof(k)};
TEST_EQ((int)vb2_offset_of(&k, vb2_packed_key_data(&k)),
sizeof(k), "vb2_packed_key_data() adjacent");
}
{
struct vb2_packed_key k = {.key_offset = 123};
TEST_EQ((int)vb2_offset_of(&k, vb2_packed_key_data(&k)), 123,
"vb2_packed_key_data() spaced");
}
{
uint8_t *p = (uint8_t *)test_helper_functions;
TEST_EQ((int)vb2_offset_of(p, p), 0, "vb2_offset_of() equal");
TEST_EQ((int)vb2_offset_of(p, p+10), 10,
"vb2_offset_of() positive");
TEST_EQ((int)vb2_offset_of(p, p+0x12345678), 0x12345678,
"vb2_offset_of() large");
}
{
uint8_t *p = (uint8_t *)test_helper_functions;
TEST_SUCC(vb2_verify_member_inside(p, 20, p, 6, 11, 3),
"vb2_verify_member_inside() ok 1");
TEST_SUCC(vb2_verify_member_inside(p, 20, p+4, 4, 8, 4),
"vb2_verify_member_inside() ok 2");
TEST_EQ(vb2_verify_member_inside(p, 20, p-4, 4, 8, 4),
VB2_ERROR_INSIDE_MEMBER_OUTSIDE,
"vb2_verify_member_inside() member before parent");
TEST_EQ(vb2_verify_member_inside(p, 20, p+20, 4, 8, 4),
VB2_ERROR_INSIDE_MEMBER_OUTSIDE,
"vb2_verify_member_inside() member after parent");
TEST_EQ(vb2_verify_member_inside(p, 20, p, 21, 0, 0),
VB2_ERROR_INSIDE_MEMBER_OUTSIDE,
"vb2_verify_member_inside() member too big");
TEST_EQ(vb2_verify_member_inside(p, 20, p, 4, 21, 0),
VB2_ERROR_INSIDE_DATA_OUTSIDE,
"vb2_verify_member_inside() data after parent");
TEST_EQ(vb2_verify_member_inside(p, 20, p, 4, SIZE_MAX, 0),
VB2_ERROR_INSIDE_DATA_OUTSIDE,
"vb2_verify_member_inside() data before parent");
TEST_EQ(vb2_verify_member_inside(p, 20, p, 4, 4, 17),
VB2_ERROR_INSIDE_DATA_OUTSIDE,
"vb2_verify_member_inside() data too big");
TEST_EQ(vb2_verify_member_inside(p, 20, p, 8, 4, 8),
VB2_ERROR_INSIDE_DATA_OVERLAP,
"vb2_verify_member_inside() data overlaps member");
TEST_EQ(vb2_verify_member_inside(p, -8, p, 12, 0, 0),
VB2_ERROR_INSIDE_PARENT_WRAPS,
"vb2_verify_member_inside() wraparound 1");
TEST_EQ(vb2_verify_member_inside(p, 20, p, -8, 0, 0),
VB2_ERROR_INSIDE_MEMBER_WRAPS,
"vb2_verify_member_inside() wraparound 2");
TEST_EQ(vb2_verify_member_inside(p, 20, p, 4, 4, -12),
VB2_ERROR_INSIDE_DATA_WRAPS,
"vb2_verify_member_inside() wraparound 3");
}
{
struct vb2_packed_key k = {.key_offset = sizeof(k),
.key_size = 128};
TEST_SUCC(vb2_verify_packed_key_inside(&k, sizeof(k)+128, &k),
"vb2_packed_key_inside() ok 1");
TEST_SUCC(vb2_verify_packed_key_inside(&k - 1,
2*sizeof(k)+128, &k),
"vb2_packed_key_inside() ok 2");
TEST_EQ(vb2_verify_packed_key_inside(&k, 128, &k),
VB2_ERROR_INSIDE_DATA_OUTSIDE,
"vb2_packed_key_inside() key too big");
}
{
struct vb2_packed_key k = {.key_offset = 100,
.key_size = 4};
TEST_EQ(vb2_verify_packed_key_inside(&k, 99, &k),
VB2_ERROR_INSIDE_DATA_OUTSIDE,
"vb2_packed_key_inside() offset too big");
}
}
int main(int argc, char* argv[])
{
test_array_size();
test_struct_packing();
test_memcmp();
test_align();
test_workbuf();
test_helper_functions();
return gTestSuccess ? 0 : 255;
}
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