1 // Copyright (c) 2012 The Chromium OS Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include <string.h> 6 7 #include "cgpt.h" 8 #include "cgptlib_internal.h" 9 #include "vboot_host.h" 10 11 int CgptLegacy(CgptLegacyParams *params) { 12 struct drive drive; 13 GptHeader *h1, *h2; 14 15 if (params == NULL) 16 return CGPT_FAILED; 17 18 if (CGPT_OK != DriveOpen(params->drive_name, &drive, O_RDWR, 19 params->drive_size)) 20 return CGPT_FAILED; 21 22 h1 = (GptHeader *)drive.gpt.primary_header; 23 h2 = (GptHeader *)drive.gpt.secondary_header; 24 if (params->efipart) { 25 memcpy(h1->signature, GPT_HEADER_SIGNATURE, GPT_HEADER_SIGNATURE_SIZE); 26 memcpy(h2->signature, GPT_HEADER_SIGNATURE, GPT_HEADER_SIGNATURE_SIZE); 27 RepairEntries(&drive.gpt, MASK_SECONDARY); 28 drive.gpt.modified |= (GPT_MODIFIED_HEADER1 | GPT_MODIFIED_ENTRIES1 | 29 GPT_MODIFIED_HEADER2); 30 } else { 31 memcpy(h1->signature, GPT_HEADER_SIGNATURE2, GPT_HEADER_SIGNATURE_SIZE); 32 memcpy(h2->signature, GPT_HEADER_SIGNATURE2, GPT_HEADER_SIGNATURE_SIZE); 33 memset(drive.gpt.primary_entries, 0, drive.gpt.sector_bytes); 34 drive.gpt.modified |= (GPT_MODIFIED_HEADER1 | GPT_MODIFIED_ENTRIES1 | 35 GPT_MODIFIED_HEADER2); 36 } 37 38 UpdateCrc(&drive.gpt); 39 40 // Write it all out 41 return DriveClose(&drive, 1); 42 } 43
