2020-04-16 09:15:26 +02:00
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/*
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* APFS.cpp
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*
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* Created on: 16 Apr 2020
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* Author: jief
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*/
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#include "Platform.h"
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#include "guid.h"
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/* S. Mitrofanov 08.06.2016
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* APFS Container introduced new partitions structure
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* Now we have, for example:
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* /dev/disk0 (internal, physical):
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* #: TYPE NAME SIZE IDENTIFIER
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* 0: GUID_partition_scheme *240.1 GB disk0
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* 1: EFI EFI 209.7 MB disk0s1
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* 2: Apple_APFS Container disk1 239.2 GB disk0s2
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* 3: Apple_KernelCoreDump 655.4 MB disk0s3
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*
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* /dev/disk1 (synthesized):
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* #: TYPE NAME SIZE IDENTIFIER
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* 0: APFS Container Scheme - +239.2 GB disk1
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* Physical Store disk0s2
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* 1: APFS Volume Macintosh SSD 170.8 GB disk1s1
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* 2: APFS Volume Preboot 17.9 MB disk1s2
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* 3: APFS Volume Recovery 521.1 MB disk1s3
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* 4: APFS Volume VM 1.1 GB disk1s4
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*/
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UINTN APFSUUIDBankCounter = 0;
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UINT8 *APFSUUIDBank = NULL;
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//Vednor APFS device path signature
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//BE74FCF7-0B7C-49F3-9147-01F4042E6842
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EFI_GUID APFSSignature = {0xBE74FCF7, 0x0B7C, 0x49F3, { 0x91, 0x47, 0x01, 0xf4, 0x04, 0x2E, 0x68, 0x42 }};
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BOOLEAN APFSSupport = FALSE;
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//Function for obtaining unique part id from APFS partition
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//IN DevicePath
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//Out: EFI_GUID
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//null if it is not APFS part
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EFI_GUID *APFSPartitionUUIDExtract(
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IN EFI_DEVICE_PATH_PROTOCOL *DevicePath
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)
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{
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while (!IsDevicePathEndType(DevicePath) &&
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!(DevicePathType(DevicePath) == MEDIA_DEVICE_PATH && DevicePathSubType (DevicePath) == MEDIA_VENDOR_DP)) {
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DevicePath = NextDevicePathNode(DevicePath);
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}
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if (DevicePathType(DevicePath) == MEDIA_DEVICE_PATH && DevicePathSubType (DevicePath) == MEDIA_VENDOR_DP) {
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//Check that vendor-assigned GUID defines APFS Container Partition
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2020-04-27 11:50:49 +02:00
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if ( GuidLEToStr((EFI_GUID *)((UINT8 *)DevicePath+0x04)).equalIC(GuidLEToStr(&APFSSignature)) ) {
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2020-04-16 09:15:26 +02:00
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return (EFI_GUID *)((UINT8 *)DevicePath+0x14);
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}
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}
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return NULL;
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}
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UINT8 *APFSContainer_Support(VOID) {
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/*
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* S. Mtr 2017
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* APFS Container partition support
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* Gather System PartitionUniqueGUID
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* edit: 17.06.2017
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* Fiil UUIDBank only with APFS container UUIDs
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*/
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UINTN VolumeIndex;
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REFIT_VOLUME *Volume;
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EFI_GUID *TmpUUID = NULL;
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//Fill APFSUUIDBank
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APFSUUIDBank = (__typeof__(APFSUUIDBank))AllocateZeroPool(0x10*Volumes.size());
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for (VolumeIndex = 0; VolumeIndex < Volumes.size(); VolumeIndex++) {
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Volume = &Volumes[VolumeIndex];
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//Check that current volume - apfs partition
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if ((TmpUUID = APFSPartitionUUIDExtract(Volume->DevicePath)) != NULL){
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CopyMem(APFSUUIDBank+APFSUUIDBankCounter*0x10,(UINT8 *)TmpUUID,0x10);
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APFSUUIDBankCounter++;
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}
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}
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return APFSUUIDBank;
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}
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