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Diffstat (limited to 'tests/gpt_misc_tests.c')
-rw-r--r-- | tests/gpt_misc_tests.c | 378 |
1 files changed, 378 insertions, 0 deletions
diff --git a/tests/gpt_misc_tests.c b/tests/gpt_misc_tests.c new file mode 100644 index 00000000..e0a8d56e --- /dev/null +++ b/tests/gpt_misc_tests.c @@ -0,0 +1,378 @@ +/* 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 "2api.h" +#include "cgptlib.h" +#include "cgptlib_internal.h" +#include "gpt.h" +#include "test_common.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") + +/* Assumes 512-byte disk sectors */ +#define MOCK_SECTOR_SIZE 512 +#define MOCK_SECTOR_COUNT 1024 + +/* Mock kernel partition */ +struct mock_part { + uint32_t start; + uint32_t size; +}; + +/* Mock data */ +static char call_log[4096]; +static int disk_read_to_fail; +static int disk_write_to_fail; + +static VbExDiskHandle_t handle; +static uint8_t mock_disk[MOCK_SECTOR_SIZE * MOCK_SECTOR_COUNT]; +static GptHeader *mock_gpt_primary = + (GptHeader*)&mock_disk[MOCK_SECTOR_SIZE * 1]; +static GptHeader *mock_gpt_secondary = + (GptHeader*)&mock_disk[MOCK_SECTOR_SIZE * (MOCK_SECTOR_COUNT - 1)]; + +/** + * Prepare a valid GPT header that will pass CheckHeader() tests + */ +static void SetupGptHeader(GptHeader *h, int is_secondary) +{ + memset(h, '\0', MOCK_SECTOR_SIZE); + + /* "EFI PART" */ + memcpy(h->signature, GPT_HEADER_SIGNATURE, GPT_HEADER_SIGNATURE_SIZE); + h->revision = GPT_HEADER_REVISION; + h->size = MIN_SIZE_OF_HEADER; + + /* 16KB: 128 entries of 128 bytes */ + h->size_of_entry = sizeof(GptEntry); + h->number_of_entries = MAX_NUMBER_OF_ENTRIES; + + /* Set LBA pointers for primary or secondary header */ + if (is_secondary) { + h->my_lba = MOCK_SECTOR_COUNT - GPT_HEADER_SECTORS; + h->entries_lba = h->my_lba - CalculateEntriesSectors(h, + MOCK_SECTOR_SIZE); + } else { + h->my_lba = GPT_PMBR_SECTORS; + h->entries_lba = h->my_lba + 1; + } + + h->first_usable_lba = 2 + CalculateEntriesSectors(h, MOCK_SECTOR_SIZE); + h->last_usable_lba = MOCK_SECTOR_COUNT - 2 - CalculateEntriesSectors(h, + MOCK_SECTOR_SIZE); + + h->header_crc32 = HeaderCrc(h); +} + +static void ResetCallLog(void) +{ + *call_log = 0; +} + +/** + * Reset mock data (for use before each test) + */ +static void ResetMocks(void) +{ + ResetCallLog(); + + memset(&mock_disk, 0, sizeof(mock_disk)); + SetupGptHeader(mock_gpt_primary, 0); + SetupGptHeader(mock_gpt_secondary, 1); + + disk_read_to_fail = -1; + disk_write_to_fail = -1; +} + +/* Mocks */ + +vb2_error_t VbExDiskRead(VbExDiskHandle_t h, uint64_t lba_start, + uint64_t lba_count, void *buffer) +{ + LOGCALL("VbExDiskRead(h, %d, %d)\n", (int)lba_start, (int)lba_count); + + if ((int)lba_start == disk_read_to_fail) + return VB2_ERROR_MOCK; + + memcpy(buffer, &mock_disk[lba_start * MOCK_SECTOR_SIZE], + lba_count * MOCK_SECTOR_SIZE); + + return VB2_SUCCESS; +} + +vb2_error_t VbExDiskWrite(VbExDiskHandle_t h, uint64_t lba_start, + uint64_t lba_count, const void *buffer) +{ + LOGCALL("VbExDiskWrite(h, %d, %d)\n", (int)lba_start, (int)lba_count); + + if ((int)lba_start == disk_write_to_fail) + return VB2_ERROR_MOCK; + + memcpy(&mock_disk[lba_start * MOCK_SECTOR_SIZE], buffer, + lba_count * MOCK_SECTOR_SIZE); + + return VB2_SUCCESS; +} + +/** + * Test reading/writing GPT + */ +static void ReadWriteGptTest(void) +{ + GptData g; + GptHeader *h; + + g.sector_bytes = MOCK_SECTOR_SIZE; + g.streaming_drive_sectors = g.gpt_drive_sectors = MOCK_SECTOR_COUNT; + g.valid_headers = g.valid_entries = MASK_BOTH; + + ResetMocks(); + TEST_EQ(AllocAndReadGptData(handle, &g), 0, "AllocAndRead"); + TEST_CALLS("VbExDiskRead(h, 1, 1)\n" + "VbExDiskRead(h, 2, 32)\n" + "VbExDiskRead(h, 1023, 1)\n" + "VbExDiskRead(h, 991, 32)\n"); + ResetCallLog(); + /* + * Valgrind complains about access to uninitialized memory here, so + * zero the primary header before each test. + */ + memset(g.primary_header, '\0', g.sector_bytes); + TEST_EQ(WriteAndFreeGptData(handle, &g), 0, "WriteAndFree"); + TEST_CALLS(""); + + /* + * Invalidate primary GPT header, + * check that AllocAndReadGptData still succeeds + */ + ResetMocks(); + memset(mock_gpt_primary, '\0', sizeof(*mock_gpt_primary)); + TEST_EQ(AllocAndReadGptData(handle, &g), 0, + "AllocAndRead primary invalid"); + TEST_EQ(CheckHeader(mock_gpt_primary, 0, g.streaming_drive_sectors, + g.gpt_drive_sectors, 0, g.sector_bytes), + 1, "Primary header is invalid"); + TEST_EQ(CheckHeader(mock_gpt_secondary, 1, g.streaming_drive_sectors, + g.gpt_drive_sectors, 0, g.sector_bytes), + 0, "Secondary header is valid"); + TEST_CALLS("VbExDiskRead(h, 1, 1)\n" + "VbExDiskRead(h, 1023, 1)\n" + "VbExDiskRead(h, 991, 32)\n"); + WriteAndFreeGptData(handle, &g); + + /* + * Invalidate secondary GPT header, + * check that AllocAndReadGptData still succeeds + */ + ResetMocks(); + memset(mock_gpt_secondary, '\0', sizeof(*mock_gpt_secondary)); + TEST_EQ(AllocAndReadGptData(handle, &g), 0, + "AllocAndRead secondary invalid"); + TEST_EQ(CheckHeader(mock_gpt_primary, 0, g.streaming_drive_sectors, + g.gpt_drive_sectors, 0, g.sector_bytes), + 0, "Primary header is valid"); + TEST_EQ(CheckHeader(mock_gpt_secondary, 1, g.streaming_drive_sectors, + g.gpt_drive_sectors, 0, g.sector_bytes), + 1, "Secondary header is invalid"); + TEST_CALLS("VbExDiskRead(h, 1, 1)\n" + "VbExDiskRead(h, 2, 32)\n" + "VbExDiskRead(h, 1023, 1)\n"); + WriteAndFreeGptData(handle, &g); + + /* + * Invalidate primary AND secondary GPT header, + * check that AllocAndReadGptData fails. + */ + ResetMocks(); + memset(mock_gpt_primary, '\0', sizeof(*mock_gpt_primary)); + memset(mock_gpt_secondary, '\0', sizeof(*mock_gpt_secondary)); + TEST_EQ(AllocAndReadGptData(handle, &g), 1, + "AllocAndRead primary and secondary invalid"); + TEST_EQ(CheckHeader(mock_gpt_primary, 0, g.streaming_drive_sectors, + g.gpt_drive_sectors, 0, g.sector_bytes), + 1, "Primary header is invalid"); + TEST_EQ(CheckHeader(mock_gpt_secondary, 1, g.streaming_drive_sectors, + g.gpt_drive_sectors, 0, g.sector_bytes), + 1, "Secondary header is invalid"); + TEST_CALLS("VbExDiskRead(h, 1, 1)\n" + "VbExDiskRead(h, 1023, 1)\n"); + WriteAndFreeGptData(handle, &g); + + /* + * Invalidate primary GPT header and check that it is + * repaired by GptRepair(). + * + * This would normally be called by LoadKernel()->GptInit() + * but this callback is mocked in these tests. + */ + ResetMocks(); + memset(mock_gpt_primary, '\0', sizeof(*mock_gpt_primary)); + TEST_EQ(AllocAndReadGptData(handle, &g), 0, + "Fix Primary GPT: AllocAndRead"); + /* Call GptRepair() with input indicating secondary GPT is valid */ + g.valid_headers = g.valid_entries = MASK_SECONDARY; + GptRepair(&g); + TEST_EQ(WriteAndFreeGptData(handle, &g), 0, + "Fix Primary GPT: WriteAndFreeGptData"); + TEST_CALLS("VbExDiskRead(h, 1, 1)\n" + "VbExDiskRead(h, 1023, 1)\n" + "VbExDiskRead(h, 991, 32)\n" + "VbExDiskWrite(h, 1, 1)\n" + "VbExDiskWrite(h, 2, 32)\n"); + TEST_EQ(CheckHeader(mock_gpt_primary, 0, g.streaming_drive_sectors, + g.gpt_drive_sectors, 0, g.sector_bytes), + 0, "Fix Primary GPT: Primary header is valid"); + + /* + * Invalidate secondary GPT header and check that it can be + * repaired by GptRepair(). + * + * This would normally be called by LoadKernel()->GptInit() + * but this callback is mocked in these tests. + */ + ResetMocks(); + memset(mock_gpt_secondary, '\0', sizeof(*mock_gpt_secondary)); + TEST_EQ(AllocAndReadGptData(handle, &g), 0, + "Fix Secondary GPT: AllocAndRead"); + /* Call GptRepair() with input indicating primary GPT is valid */ + g.valid_headers = g.valid_entries = MASK_PRIMARY; + GptRepair(&g); + TEST_EQ(WriteAndFreeGptData(handle, &g), 0, + "Fix Secondary GPT: WriteAndFreeGptData"); + TEST_CALLS("VbExDiskRead(h, 1, 1)\n" + "VbExDiskRead(h, 2, 32)\n" + "VbExDiskRead(h, 1023, 1)\n" + "VbExDiskWrite(h, 1023, 1)\n" + "VbExDiskWrite(h, 991, 32)\n"); + TEST_EQ(CheckHeader(mock_gpt_secondary, 1, g.streaming_drive_sectors, + g.gpt_drive_sectors, 0, g.sector_bytes), + 0, "Fix Secondary GPT: Secondary header is valid"); + + /* Data which is changed is written */ + ResetMocks(); + AllocAndReadGptData(handle, &g); + g.modified |= GPT_MODIFIED_HEADER1 | GPT_MODIFIED_ENTRIES1; + ResetCallLog(); + memset(g.primary_header, '\0', g.sector_bytes); + h = (GptHeader*)g.primary_header; + h->entries_lba = 2; + h->number_of_entries = MAX_NUMBER_OF_ENTRIES; + h->size_of_entry = sizeof(GptEntry); + 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(); + memset(g.primary_header, '\0', g.sector_bytes); + h = (GptHeader*)g.primary_header; + h->entries_lba = 2; + h->number_of_entries = MAX_NUMBER_OF_ENTRIES; + h->size_of_entry = sizeof(GptEntry); + h = (GptHeader*)g.secondary_header; + h->entries_lba = 991; + TEST_EQ(WriteAndFreeGptData(handle, &g), 0, "WriteAndFree mod all"); + TEST_CALLS("VbExDiskWrite(h, 1, 1)\n" + "VbExDiskWrite(h, 2, 32)\n" + "VbExDiskWrite(h, 1023, 1)\n" + "VbExDiskWrite(h, 991, 32)\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, 1023, 1)\n" + "VbExDiskWrite(h, 991, 32)\n"); + + /* Error reading */ + ResetMocks(); + disk_read_to_fail = 1; + TEST_EQ(AllocAndReadGptData(handle, &g), 0, "AllocAndRead disk fail"); + g.valid_headers = g.valid_entries = MASK_SECONDARY; + GptRepair(&g); + ResetCallLog(); + TEST_EQ(WriteAndFreeGptData(handle, &g), 0, "WriteAndFree mod 1"); + TEST_CALLS("VbExDiskWrite(h, 1, 1)\n" + "VbExDiskWrite(h, 2, 32)\n"); + + ResetMocks(); + disk_read_to_fail = 2; + TEST_EQ(AllocAndReadGptData(handle, &g), 0, "AllocAndRead disk fail"); + g.valid_headers = MASK_BOTH; + g.valid_entries = MASK_SECONDARY; + GptRepair(&g); + ResetCallLog(); + TEST_EQ(WriteAndFreeGptData(handle, &g), 0, "WriteAndFree mod 1"); + TEST_CALLS("VbExDiskWrite(h, 2, 32)\n"); + + ResetMocks(); + disk_read_to_fail = 991; + TEST_EQ(AllocAndReadGptData(handle, &g), 0, "AllocAndRead disk fail"); + g.valid_headers = MASK_BOTH; + g.valid_entries = MASK_PRIMARY; + GptRepair(&g); + ResetCallLog(); + TEST_EQ(WriteAndFreeGptData(handle, &g), 0, "WriteAndFree mod 2"); + TEST_CALLS("VbExDiskWrite(h, 991, 32)\n"); + + ResetMocks(); + disk_read_to_fail = 1023; + TEST_EQ(AllocAndReadGptData(handle, &g), 0, "AllocAndRead disk fail"); + g.valid_headers = g.valid_entries = MASK_PRIMARY; + GptRepair(&g); + ResetCallLog(); + TEST_EQ(WriteAndFreeGptData(handle, &g), 0, "WriteAndFree mod 2"); + TEST_CALLS("VbExDiskWrite(h, 1023, 1)\n" + "VbExDiskWrite(h, 991, 32)\n"); + + /* Error writing */ + ResetMocks(); + disk_write_to_fail = 1; + AllocAndReadGptData(handle, &g); + g.modified = -1; + memset(g.primary_header, '\0', g.sector_bytes); + TEST_NEQ(WriteAndFreeGptData(handle, &g), 0, "WriteAndFree disk fail"); + + ResetMocks(); + disk_write_to_fail = 2; + AllocAndReadGptData(handle, &g); + g.modified = -1; + memset(g.primary_header, '\0', g.sector_bytes); + h = (GptHeader*)g.primary_header; + h->entries_lba = 2; + TEST_NEQ(WriteAndFreeGptData(handle, &g), 0, "WriteAndFree disk fail"); + + ResetMocks(); + disk_write_to_fail = 991; + AllocAndReadGptData(handle, &g); + g.modified = -1; + memset(g.primary_header, '\0', g.sector_bytes); + TEST_NEQ(WriteAndFreeGptData(handle, &g), 0, "WriteAndFree disk fail"); + + ResetMocks(); + disk_write_to_fail = 1023; + AllocAndReadGptData(handle, &g); + g.modified = -1; + memset(g.primary_header, '\0', g.sector_bytes); + TEST_NEQ(WriteAndFreeGptData(handle, &g), 0, "WriteAndFree disk fail"); + +} + +int main(void) +{ + ReadWriteGptTest(); + + return gTestSuccess ? 0 : 255; +} |