28 May
2022
28 May
'22
9:33 a.m.
https://git.reactos.org/?p=reactos.git;a=commitdiff;h=723947eab127001405d07…
commit 723947eab127001405d07963f2046e147be6498f
Author: Eric Kohl <eric.kohl(a)reactos.org>
AuthorDate: Sat May 28 11:33:29 2022 +0200
Commit: Eric Kohl <eric.kohl(a)reactos.org>
CommitDate: Sat May 28 11:33:29 2022 +0200
[DISKPART] Implement CREATE PARTITION PRIMARY and DELETE PARTITION
---
base/system/diskpart/create.c | 146 ++++++++--
base/system/diskpart/delete.c | 121 ++++++++
base/system/diskpart/diskpart.h | 34 ++-
base/system/diskpart/partlist.c | 630 ++++++++++++++++++++++++++++++++++++++--
4 files changed, 891 insertions(+), 40 deletions(-)
diff --git a/base/system/diskpart/create.c b/base/system/diskpart/create.c
index a933da2c5ae..095bf4e3d10 100644
--- a/base/system/diskpart/create.c
+++ b/base/system/diskpart/create.c
@@ -8,6 +8,10 @@
#include "diskpart.h"
+#define NDEBUG
+#include <debug.h>
+
+
BOOL
CreateExtendedPartition(
INT argc,
@@ -47,32 +51,30 @@ CreatePrimaryPartition(
INT argc,
PWSTR *argv)
{
- LARGE_INTEGER liSize, liOffset;
- INT i;
+ PPARTENTRY PartEntry, NewPartEntry;
+ PLIST_ENTRY ListEntry;
+ ULONGLONG ullSize = 0ULL, ullOffset = 0ULL;
+ ULONGLONG ullSectorCount;
+ UCHAR PartitionType = 6;
+ INT i, length;
// BOOL bNoErr = FALSE;
PWSTR pszSuffix = NULL;
- liSize.QuadPart = -1;
- liOffset.QuadPart = -1;
-
-/*
if (CurrentDisk == NULL)
{
ConResPuts(StdOut, IDS_SELECT_NO_DISK);
return TRUE;
}
-*/
for (i = 3; i < argc; i++)
{
if (HasPrefix(argv[i], L"size=", &pszSuffix))
{
/* size=<N> (MB) */
- ConPrintf(StdOut, L"Size : %s\n", pszSuffix);
+ DPRINT("Size : %s\n", pszSuffix);
- liSize.QuadPart = _wcstoui64(pszSuffix, NULL, 10);
- if (((liSize.QuadPart == 0) && (errno == ERANGE)) ||
- (liSize.QuadPart < 0))
+ ullSize = _wcstoui64(pszSuffix, NULL, 10);
+ if ((ullSize == 0) && (errno == ERANGE))
{
ConResPuts(StdErr, IDS_ERROR_INVALID_ARGS);
return TRUE;
@@ -81,11 +83,10 @@ CreatePrimaryPartition(
else if (HasPrefix(argv[i], L"offset=", &pszSuffix))
{
/* offset=<N> (KB) */
- ConPrintf(StdOut, L"Offset : %s\n", pszSuffix);
+ DPRINT("Offset : %s\n", pszSuffix);
- liOffset.QuadPart = _wcstoui64(pszSuffix, NULL, 10);
- if (((liOffset.QuadPart == 0) && (errno == ERANGE)) ||
- (liOffset.QuadPart < 0))
+ ullOffset = _wcstoui64(pszSuffix, NULL, 10);
+ if ((ullOffset == 0) && (errno == ERANGE))
{
ConResPuts(StdErr, IDS_ERROR_INVALID_ARGS);
return TRUE;
@@ -94,17 +95,41 @@ CreatePrimaryPartition(
else if (HasPrefix(argv[i], L"id=", &pszSuffix))
{
/* id=<Byte>|<GUID> */
- ConPrintf(StdOut, L"Id : %s\n", pszSuffix);
+ DPRINT("Id : %s\n", pszSuffix);
+
+ length = wcslen(pszSuffix);
+ if ((length == 1) || (length == 2))
+ {
+ /* Byte */
+ PartitionType = (UCHAR)wcstoul(pszSuffix, NULL, 16);
+ if ((PartitionType == 0) && (errno == ERANGE))
+ {
+ ConResPuts(StdErr, IDS_ERROR_INVALID_ARGS);
+ return TRUE;
+ }
+ }
+#if 0
+ else if ()
+ {
+ /* GUID */
+ }
+#endif
+ else
+ {
+ ConResPuts(StdErr, IDS_ERROR_INVALID_ARGS);
+ return TRUE;
+ }
}
else if (HasPrefix(argv[i], L"align=", &pszSuffix))
{
/* align=<N> */
- ConPrintf(StdOut, L"Align : %s\n", pszSuffix);
+ DPRINT("Align : %s\n", pszSuffix);
+// bAlign = TRUE;
}
else if (_wcsicmp(argv[i], L"noerr") == 0)
{
/* noerr */
- ConPrintf(StdOut, L"NoErr\n", pszSuffix);
+ DPRINT("NoErr\n", pszSuffix);
// bNoErr = TRUE;
}
else
@@ -114,8 +139,89 @@ CreatePrimaryPartition(
}
}
- ConPrintf(StdOut, L"Size: %I64d\n", liSize.QuadPart);
- ConPrintf(StdOut, L"Offset: %I64d\n", liOffset.QuadPart);
+ DPRINT1("Size: %I64u\n", ullSize);
+ DPRINT1("Offset: %I64u\n", ullOffset);
+ DPRINT1("Partition Type: %hx\n", PartitionType);
+
+ if (GetPrimaryPartitionCount(CurrentDisk) >= 4)
+ {
+ ConPuts(StdOut, L"No space left for another primary partition!\n");
+ return TRUE;
+ }
+
+ if (ullSize != 0)
+ ullSectorCount = (ullSize * 1024 * 1024) / CurrentDisk->BytesPerSector;
+ else
+ ullSectorCount = 0;
+
+ DPRINT1("SectorCount: %I64u\n", ullSectorCount);
+
+ for (ListEntry = CurrentDisk->PrimaryPartListHead.Flink;
+ ListEntry != &CurrentDisk->PrimaryPartListHead;
+ ListEntry = ListEntry->Flink)
+ {
+ PartEntry = CONTAINING_RECORD(ListEntry, PARTENTRY, ListEntry);
+ if (PartEntry->IsPartitioned)
+ continue;
+
+ if (ullSectorCount == 0)
+ {
+ PartEntry->IsPartitioned = TRUE;
+ PartEntry->New = TRUE;
+ PartEntry->PartitionType = PartitionType;
+ PartEntry->FormatState = Unformatted;
+ PartEntry->FileSystemName[0] = L'\0';
+
+ CurrentDisk->Dirty = TRUE;
+ break;
+ }
+ else
+ {
+ if (PartEntry->SectorCount.QuadPart == ullSectorCount)
+ {
+ PartEntry->IsPartitioned = TRUE;
+ PartEntry->New = TRUE;
+ PartEntry->PartitionType = PartitionType;
+ PartEntry->FormatState = Unformatted;
+ PartEntry->FileSystemName[0] = L'\0';
+
+ CurrentDisk->Dirty = TRUE;
+ break;
+ }
+ else if (PartEntry->SectorCount.QuadPart > ullSectorCount)
+ {
+ NewPartEntry = RtlAllocateHeap(RtlGetProcessHeap(), HEAP_ZERO_MEMORY,
sizeof(PPARTENTRY));
+ if (NewPartEntry == NULL)
+ {
+ ConPuts(StdOut, L"Memory allocation failed!\n");
+ return TRUE;
+ }
+
+ NewPartEntry->DiskEntry = PartEntry->DiskEntry;
+
+ NewPartEntry->StartSector.QuadPart =
PartEntry->StartSector.QuadPart;
+ NewPartEntry->SectorCount.QuadPart = ullSectorCount;
+
+ NewPartEntry->LogicalPartition = FALSE;
+ NewPartEntry->IsPartitioned = TRUE;
+ NewPartEntry->New = TRUE;
+ NewPartEntry->PartitionType = PartitionType;
+ NewPartEntry->FormatState = Unformatted;
+ NewPartEntry->FileSystemName[0] = L'\0';
+
+ PartEntry->StartSector.QuadPart += ullSectorCount;
+ PartEntry->SectorCount.QuadPart -= ullSectorCount;
+
+ InsertTailList(ListEntry, &NewPartEntry->ListEntry);
+
+ CurrentDisk->Dirty = TRUE;
+ break;
+ }
+ }
+ }
+
+ UpdateDiskLayout(CurrentDisk);
+ WritePartitions(CurrentDisk);
return TRUE;
}
diff --git a/base/system/diskpart/delete.c b/base/system/diskpart/delete.c
index de712944dcc..c17498bd863 100644
--- a/base/system/diskpart/delete.c
+++ b/base/system/diskpart/delete.c
@@ -8,6 +8,9 @@
#include "diskpart.h"
+#define NDEBUG
+#include <debug.h>
+
BOOL
DeleteDisk(
_In_ INT argc,
@@ -16,14 +19,132 @@ DeleteDisk(
return TRUE;
}
+
BOOL
DeletePartition(
_In_ INT argc,
_In_ PWSTR *argv)
{
+ PPARTENTRY PrevPartEntry;
+ PPARTENTRY NextPartEntry;
+ PPARTENTRY LogicalPartEntry;
+ PLIST_ENTRY Entry;
+
+ DPRINT("DeletePartition()\n");
+
+ if (CurrentDisk == NULL)
+ {
+ ConResPuts(StdOut, IDS_SELECT_NO_DISK);
+ return TRUE;
+ }
+
+ if (CurrentPartition == NULL)
+ {
+ ConResPuts(StdOut, IDS_SELECT_NO_PARTITION);
+ return TRUE;
+ }
+
+ ASSERT(CurrentPartition->PartitionType != PARTITION_ENTRY_UNUSED);
+
+ /* Clear the system partition if it is being deleted */
+#if 0
+ if (List->SystemPartition == PartEntry)
+ {
+ ASSERT(List->SystemPartition);
+ List->SystemPartition = NULL;
+ }
+#endif
+
+ /* Check which type of partition (primary/logical or extended) is being deleted */
+ if (CurrentDisk->ExtendedPartition == CurrentPartition)
+ {
+ /* An extended partition is being deleted: delete all logical partition entries
*/
+ while (!IsListEmpty(&CurrentDisk->LogicalPartListHead))
+ {
+ Entry = RemoveHeadList(&CurrentDisk->LogicalPartListHead);
+ LogicalPartEntry = CONTAINING_RECORD(Entry, PARTENTRY, ListEntry);
+
+ /* Dismount the logical partition */
+ DismountVolume(LogicalPartEntry);
+
+ /* Delete it */
+ RtlFreeHeap(RtlGetProcessHeap(), 0, LogicalPartEntry);
+ }
+
+ CurrentDisk->ExtendedPartition = NULL;
+ }
+ else
+ {
+ /* A primary partition is being deleted: dismount it */
+ DismountVolume(CurrentPartition);
+ }
+
+ /* Adjust the unpartitioned disk space entries */
+
+ /* Get pointer to previous and next unpartitioned entries */
+ PrevPartEntry = GetPrevUnpartitionedEntry(CurrentPartition);
+ NextPartEntry = GetNextUnpartitionedEntry(CurrentPartition);
+
+ if (PrevPartEntry != NULL && NextPartEntry != NULL)
+ {
+ /* Merge the previous, current and next unpartitioned entries */
+
+ /* Adjust the previous entry length */
+ PrevPartEntry->SectorCount.QuadPart +=
(CurrentPartition->SectorCount.QuadPart + NextPartEntry->SectorCount.QuadPart);
+
+ /* Remove the current and next entries */
+ RemoveEntryList(&CurrentPartition->ListEntry);
+ RtlFreeHeap(RtlGetProcessHeap(), 0, CurrentPartition);
+ RemoveEntryList(&NextPartEntry->ListEntry);
+ RtlFreeHeap(RtlGetProcessHeap(), 0, NextPartEntry);
+ }
+ else if (PrevPartEntry != NULL && NextPartEntry == NULL)
+ {
+ /* Merge the current and the previous unpartitioned entries */
+
+ /* Adjust the previous entry length */
+ PrevPartEntry->SectorCount.QuadPart +=
CurrentPartition->SectorCount.QuadPart;
+
+ /* Remove the current entry */
+ RemoveEntryList(&CurrentPartition->ListEntry);
+ RtlFreeHeap(RtlGetProcessHeap(), 0, CurrentPartition);
+ }
+ else if (PrevPartEntry == NULL && NextPartEntry != NULL)
+ {
+ /* Merge the current and the next unpartitioned entries */
+
+ /* Adjust the next entry offset and length */
+ NextPartEntry->StartSector.QuadPart =
CurrentPartition->StartSector.QuadPart;
+ NextPartEntry->SectorCount.QuadPart +=
CurrentPartition->SectorCount.QuadPart;
+
+ /* Remove the current entry */
+ RemoveEntryList(&CurrentPartition->ListEntry);
+ RtlFreeHeap(RtlGetProcessHeap(), 0, CurrentPartition);
+ }
+ else
+ {
+ /* Nothing to merge but change the current entry */
+ CurrentPartition->IsPartitioned = FALSE;
+ CurrentPartition->OnDiskPartitionNumber = 0;
+ CurrentPartition->PartitionNumber = 0;
+ // CurrentPartition->PartitionIndex = 0;
+ CurrentPartition->BootIndicator = FALSE;
+ CurrentPartition->PartitionType = PARTITION_ENTRY_UNUSED;
+ CurrentPartition->FormatState = Unformatted;
+ CurrentPartition->FileSystemName[0] = L'\0';
+ CurrentPartition->DriveLetter = 0;
+ RtlZeroMemory(CurrentPartition->VolumeLabel,
sizeof(CurrentPartition->VolumeLabel));
+ }
+
+ CurrentPartition = NULL;
+
+ UpdateDiskLayout(CurrentDisk);
+ WritePartitions(CurrentDisk);
+
return TRUE;
}
+
BOOL
DeleteVolume(
_In_ INT argc,
diff --git a/base/system/diskpart/diskpart.h b/base/system/diskpart/diskpart.h
index f13e6724262..218b6030a17 100644
--- a/base/system/diskpart/diskpart.h
+++ b/base/system/diskpart/diskpart.h
@@ -94,13 +94,14 @@ typedef struct _PARTENTRY
BOOLEAN BootIndicator;
UCHAR PartitionType;
- ULONG HiddenSectors;
+ ULONG OnDiskPartitionNumber;
ULONG PartitionNumber;
ULONG PartitionIndex;
CHAR DriveLetter;
CHAR VolumeLabel[17];
CHAR FileSystemName[9];
+ FORMATSTATE FormatState;
BOOLEAN LogicalPartition;
@@ -113,8 +114,6 @@ typedef struct _PARTENTRY
/* Partition was created automatically. */
BOOLEAN AutoCreate;
- FORMATSTATE FormatState;
-
/* Partition must be checked */
BOOLEAN NeedsCheck;
@@ -383,6 +382,11 @@ BOOL offline_main(INT argc, LPWSTR *argv);
BOOL online_main(INT argc, LPWSTR *argv);
/* partlist.c */
+ULONGLONG
+AlignDown(
+ _In_ ULONGLONG Value,
+ _In_ ULONG Alignment);
+
NTSTATUS
CreatePartitionList(VOID);
@@ -395,6 +399,30 @@ CreateVolumeList(VOID);
VOID
DestroyVolumeList(VOID);
+NTSTATUS
+WritePartitions(
+ _In_ PDISKENTRY DiskEntry);
+
+VOID
+UpdateDiskLayout(
+ _In_ PDISKENTRY DiskEntry);
+
+PPARTENTRY
+GetPrevUnpartitionedEntry(
+ _In_ PPARTENTRY PartEntry);
+
+PPARTENTRY
+GetNextUnpartitionedEntry(
+ _In_ PPARTENTRY PartEntry);
+
+ULONG
+GetPrimaryPartitionCount(
+ _In_ PDISKENTRY DiskEntry);
+
+NTSTATUS
+DismountVolume(
+ IN PPARTENTRY PartEntry);
+
/* recover.c */
BOOL recover_main(INT argc, LPWSTR *argv);
diff --git a/base/system/diskpart/partlist.c b/base/system/diskpart/partlist.c
index 6d91e385571..568f902ea38 100644
--- a/base/system/diskpart/partlist.c
+++ b/base/system/diskpart/partlist.c
@@ -10,6 +10,7 @@
#include "diskpart.h"
#include <ntddscsi.h>
+#include <strsafe.h>
#define NDEBUG
#include <debug.h>
@@ -80,8 +81,8 @@ PVOLENTRY CurrentVolume = NULL;
ULONGLONG
AlignDown(
- IN ULONGLONG Value,
- IN ULONG Alignment)
+ _In_ ULONGLONG Value,
+ _In_ ULONG Alignment)
{
ULONGLONG Temp;
@@ -102,9 +103,9 @@ GetDriverName(
RtlInitUnicodeString(&DiskEntry->DriverName,
NULL);
- swprintf(KeyName,
- L"\\Scsi\\Scsi Port %lu",
- DiskEntry->Port);
+ StringCchPrintfW(KeyName, ARRAYSIZE(KeyName),
+ L"\\Scsi\\Scsi Port %lu",
+ DiskEntry->Port);
RtlZeroMemory(&QueryTable,
sizeof(QueryTable));
@@ -280,7 +281,8 @@ EnumerateBiosDiskEntries(VOID)
AdapterCount = 0;
while (1)
{
- swprintf(Name, L"%s\\%lu", ROOT_NAME, AdapterCount);
+ StringCchPrintfW(Name, ARRAYSIZE(Name),
+ L"%s\\%lu", ROOT_NAME, AdapterCount);
Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE,
Name,
&QueryTable[2],
@@ -291,7 +293,8 @@ EnumerateBiosDiskEntries(VOID)
break;
}
- swprintf(Name, L"%s\\%lu\\DiskController", ROOT_NAME, AdapterCount);
+ StringCchPrintfW(Name, ARRAYSIZE(Name),
+ L"%s\\%lu\\DiskController", ROOT_NAME, AdapterCount);
Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE,
Name,
&QueryTable[2],
@@ -301,7 +304,8 @@ EnumerateBiosDiskEntries(VOID)
{
while (1)
{
- swprintf(Name, L"%s\\%lu\\DiskController\\0", ROOT_NAME,
AdapterCount);
+ StringCchPrintfW(Name, ARRAYSIZE(Name),
+ L"%s\\%lu\\DiskController\\0", ROOT_NAME,
AdapterCount);
Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE,
Name,
&QueryTable[2],
@@ -313,7 +317,8 @@ EnumerateBiosDiskEntries(VOID)
return;
}
- swprintf(Name, L"%s\\%lu\\DiskController\\0\\DiskPeripheral",
ROOT_NAME, AdapterCount);
+ StringCchPrintfW(Name, ARRAYSIZE(Name),
+ L"%s\\%lu\\DiskController\\0\\DiskPeripheral",
ROOT_NAME, AdapterCount);
Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE,
Name,
&QueryTable[2],
@@ -335,7 +340,8 @@ EnumerateBiosDiskEntries(VOID)
break;
}
- swprintf(Name,
L"%s\\%lu\\DiskController\\0\\DiskPeripheral\\%lu", ROOT_NAME, AdapterCount,
DiskCount);
+ StringCchPrintfW(Name, ARRAYSIZE(Name),
+
L"%s\\%lu\\DiskController\\0\\DiskPeripheral\\%lu", ROOT_NAME, AdapterCount,
DiskCount);
Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE,
Name,
QueryTable,
@@ -420,7 +426,6 @@ AddPartitionToDisk(
PartEntry->BootIndicator = PartitionInfo->BootIndicator;
PartEntry->PartitionType = PartitionInfo->PartitionType;
- PartEntry->HiddenSectors = PartitionInfo->HiddenSectors;
PartEntry->LogicalPartition = LogicalPartition;
PartEntry->IsPartitioned = TRUE;
@@ -849,7 +854,8 @@ AddDiskToList(
}
Checksum = ~Checksum + 1;
- swprintf(Identifier, L"%08x-%08x-A", Checksum, Signature);
+ StringCchPrintfW(Identifier, ARRAYSIZE(Identifier),
+ L"%08x-%08x-A", Checksum, Signature);
DPRINT("Identifier: %S\n", Identifier);
DiskEntry = RtlAllocateHeap(RtlGetProcessHeap(),
@@ -927,8 +933,10 @@ AddDiskToList(
(ULONGLONG)DiskGeometry.TracksPerCylinder *
(ULONGLONG)DiskGeometry.SectorsPerTrack;
- DiskEntry->SectorAlignment = DiskGeometry.SectorsPerTrack;
- DiskEntry->CylinderAlignment = DiskGeometry.SectorsPerTrack *
DiskGeometry.TracksPerCylinder;
+// DiskEntry->SectorAlignment = DiskGeometry.SectorsPerTrack;
+// DiskEntry->CylinderAlignment = DiskGeometry.SectorsPerTrack *
DiskGeometry.TracksPerCylinder;
+ DiskEntry->SectorAlignment = (1024 * 1024) / DiskGeometry.BytesPerSector;
+ DiskEntry->CylinderAlignment = (1024 * 1024) / DiskGeometry.BytesPerSector;
DPRINT1("SectorCount: %I64u\n", DiskEntry->SectorCount);
DPRINT1("SectorAlignment: %lu\n", DiskEntry->SectorAlignment);
@@ -1085,9 +1093,10 @@ CreatePartitionList(VOID)
for (DiskNumber = 0; DiskNumber < Sdi.NumberOfDisks; DiskNumber++)
{
- swprintf(Buffer,
- L"\\Device\\Harddisk%d\\Partition0",
- DiskNumber);
+ StringCchPrintfW(Buffer, ARRAYSIZE(Buffer),
+ L"\\Device\\Harddisk%d\\Partition0",
+ DiskNumber);
+
RtlInitUnicodeString(&Name,
Buffer);
@@ -1309,4 +1318,591 @@ DestroyVolumeList(VOID)
}
}
+
+NTSTATUS
+WritePartitions(
+ _In_ PDISKENTRY DiskEntry)
+{
+ NTSTATUS Status;
+ OBJECT_ATTRIBUTES ObjectAttributes;
+ UNICODE_STRING Name;
+ HANDLE FileHandle;
+ IO_STATUS_BLOCK Iosb;
+ ULONG BufferSize;
+ PPARTITION_INFORMATION PartitionInfo;
+ ULONG PartitionCount;
+ PLIST_ENTRY ListEntry;
+ PPARTENTRY PartEntry;
+ WCHAR DstPath[MAX_PATH];
+
+ DPRINT("WritePartitions() Disk: %lu\n", DiskEntry->DiskNumber);
+
+ /* If the disk is not dirty, there is nothing to do */
+ if (!DiskEntry->Dirty)
+ return STATUS_SUCCESS;
+
+ StringCchPrintfW(DstPath, ARRAYSIZE(DstPath),
+ L"\\Device\\Harddisk%lu\\Partition0",
+ DiskEntry->DiskNumber);
+ RtlInitUnicodeString(&Name, DstPath);
+
+ InitializeObjectAttributes(&ObjectAttributes,
+ &Name,
+ OBJ_CASE_INSENSITIVE,
+ NULL,
+ NULL);
+
+ Status = NtOpenFile(&FileHandle,
+ GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE,
+ &ObjectAttributes,
+ &Iosb,
+ 0,
+ FILE_SYNCHRONOUS_IO_NONALERT);
+ if (!NT_SUCCESS(Status))
+ {
+ DPRINT1("NtOpenFile() failed (Status %lx)\n", Status);
+ return Status;
+ }
+
+ //
+ // FIXME: We first *MUST* use IOCTL_DISK_CREATE_DISK to initialize
+ // the disk in MBR or GPT format in case the disk was not initialized!!
+ // For this we must ask the user which format to use.
+ //
+
+ /* Save the original partition count to be restored later (see comment below) */
+ PartitionCount = DiskEntry->LayoutBuffer->PartitionCount;
+
+ /* Set the new disk layout and retrieve its updated version with possibly modified
partition numbers */
+ BufferSize = sizeof(DRIVE_LAYOUT_INFORMATION) +
+ ((PartitionCount - 1) * sizeof(PARTITION_INFORMATION));
+ Status = NtDeviceIoControlFile(FileHandle,
+ NULL,
+ NULL,
+ NULL,
+ &Iosb,
+ IOCTL_DISK_SET_DRIVE_LAYOUT,
+ DiskEntry->LayoutBuffer,
+ BufferSize,
+ DiskEntry->LayoutBuffer,
+ BufferSize);
+ NtClose(FileHandle);
+
+ /*
+ * IOCTL_DISK_SET_DRIVE_LAYOUT calls IoWritePartitionTable(), which converts
+ * DiskEntry->LayoutBuffer->PartitionCount into a partition *table* count,
+ * where such a table is expected to enumerate up to 4 partitions:
+ * partition *table* count == ROUND_UP(PartitionCount, 4) / 4 .
+ * Due to this we need to restore the original PartitionCount number.
+ */
+ DiskEntry->LayoutBuffer->PartitionCount = PartitionCount;
+
+ /* Check whether the IOCTL_DISK_SET_DRIVE_LAYOUT call succeeded */
+ if (!NT_SUCCESS(Status))
+ {
+ DPRINT1("IOCTL_DISK_SET_DRIVE_LAYOUT failed (Status 0x%08lx)\n",
Status);
+ return Status;
+ }
+
+ /* Update the partition numbers */
+
+ /* Update the primary partition table */
+ for (ListEntry = DiskEntry->PrimaryPartListHead.Flink;
+ ListEntry != &DiskEntry->PrimaryPartListHead;
+ ListEntry = ListEntry->Flink)
+ {
+ PartEntry = CONTAINING_RECORD(ListEntry, PARTENTRY, ListEntry);
+
+ if (PartEntry->IsPartitioned)
+ {
+ ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED);
+ PartitionInfo =
&DiskEntry->LayoutBuffer->PartitionEntry[PartEntry->PartitionIndex];
+ PartEntry->PartitionNumber = PartitionInfo->PartitionNumber;
+ }
+ }
+
+ /* Update the logical partition table */
+ for (ListEntry = DiskEntry->LogicalPartListHead.Flink;
+ ListEntry != &DiskEntry->LogicalPartListHead;
+ ListEntry = ListEntry->Flink)
+ {
+ PartEntry = CONTAINING_RECORD(ListEntry, PARTENTRY, ListEntry);
+
+ if (PartEntry->IsPartitioned)
+ {
+ ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED);
+ PartitionInfo =
&DiskEntry->LayoutBuffer->PartitionEntry[PartEntry->PartitionIndex];
+ PartEntry->PartitionNumber = PartitionInfo->PartitionNumber;
+ }
+ }
+
+ /* The layout has been successfully updated, the disk is not dirty anymore */
+ DiskEntry->Dirty = FALSE;
+
+ return Status;
+}
+
+
+static
+BOOLEAN
+IsEmptyLayoutEntry(
+ IN PPARTITION_INFORMATION PartitionInfo)
+{
+ if (PartitionInfo->StartingOffset.QuadPart == 0 &&
+ PartitionInfo->PartitionLength.QuadPart == 0)
+ {
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+
+static
+BOOLEAN
+IsSamePrimaryLayoutEntry(
+ IN PPARTITION_INFORMATION PartitionInfo,
+ IN PDISKENTRY DiskEntry,
+ IN PPARTENTRY PartEntry)
+{
+ if ((PartitionInfo->StartingOffset.QuadPart == PartEntry->StartSector.QuadPart
* DiskEntry->BytesPerSector) &&
+ (PartitionInfo->PartitionLength.QuadPart == PartEntry->SectorCount.QuadPart
* DiskEntry->BytesPerSector))
+ {
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+
+ULONG
+GetPrimaryPartitionCount(
+ IN PDISKENTRY DiskEntry)
+{
+ PLIST_ENTRY Entry;
+ PPARTENTRY PartEntry;
+ ULONG Count = 0;
+
+ for (Entry = DiskEntry->PrimaryPartListHead.Flink;
+ Entry != &DiskEntry->PrimaryPartListHead;
+ Entry = Entry->Flink)
+ {
+ PartEntry = CONTAINING_RECORD(Entry, PARTENTRY, ListEntry);
+ if (PartEntry->IsPartitioned)
+ Count++;
+ }
+
+ return Count;
+}
+
+
+static
+ULONG
+GetLogicalPartitionCount(
+ IN PDISKENTRY DiskEntry)
+{
+ PLIST_ENTRY ListEntry;
+ PPARTENTRY PartEntry;
+ ULONG Count = 0;
+
+ for (ListEntry = DiskEntry->LogicalPartListHead.Flink;
+ ListEntry != &DiskEntry->LogicalPartListHead;
+ ListEntry = ListEntry->Flink)
+ {
+ PartEntry = CONTAINING_RECORD(ListEntry, PARTENTRY, ListEntry);
+ if (PartEntry->IsPartitioned)
+ Count++;
+ }
+
+ return Count;
+}
+
+
+static
+BOOLEAN
+ReAllocateLayoutBuffer(
+ IN PDISKENTRY DiskEntry)
+{
+ PDRIVE_LAYOUT_INFORMATION NewLayoutBuffer;
+ ULONG NewPartitionCount;
+ ULONG CurrentPartitionCount = 0;
+ ULONG LayoutBufferSize;
+ ULONG i;
+
+ DPRINT1("ReAllocateLayoutBuffer()\n");
+
+ NewPartitionCount = 4 + GetLogicalPartitionCount(DiskEntry) * 4;
+
+ if (DiskEntry->LayoutBuffer)
+ CurrentPartitionCount = DiskEntry->LayoutBuffer->PartitionCount;
+
+ DPRINT1("CurrentPartitionCount: %lu ; NewPartitionCount: %lu\n",
+ CurrentPartitionCount, NewPartitionCount);
+
+ if (CurrentPartitionCount == NewPartitionCount)
+ return TRUE;
+
+ LayoutBufferSize = sizeof(DRIVE_LAYOUT_INFORMATION) +
+ ((NewPartitionCount - ANYSIZE_ARRAY) *
sizeof(PARTITION_INFORMATION));
+ NewLayoutBuffer = RtlReAllocateHeap(RtlGetProcessHeap(),
+ HEAP_ZERO_MEMORY,
+ DiskEntry->LayoutBuffer,
+ LayoutBufferSize);
+ if (NewLayoutBuffer == NULL)
+ {
+ DPRINT1("Failed to allocate the new layout buffer (size: %lu)\n",
LayoutBufferSize);
+ return FALSE;
+ }
+
+ NewLayoutBuffer->PartitionCount = NewPartitionCount;
+
+ /* If the layout buffer grows, make sure the new (empty) entries are written to the
disk */
+ if (NewPartitionCount > CurrentPartitionCount)
+ {
+ for (i = CurrentPartitionCount; i < NewPartitionCount; i++)
+ {
+ NewLayoutBuffer->PartitionEntry[i].RewritePartition = TRUE;
+ }
+ }
+
+ DiskEntry->LayoutBuffer = NewLayoutBuffer;
+
+ return TRUE;
+}
+
+
+VOID
+UpdateDiskLayout(
+ IN PDISKENTRY DiskEntry)
+{
+ PPARTITION_INFORMATION PartitionInfo;
+ PPARTITION_INFORMATION LinkInfo = NULL;
+ PLIST_ENTRY ListEntry;
+ PPARTENTRY PartEntry;
+ LARGE_INTEGER HiddenSectors64;
+ ULONG Index;
+ ULONG PartitionNumber = 1;
+
+ DPRINT1("UpdateDiskLayout()\n");
+
+ /* Resize the layout buffer if necessary */
+ if (ReAllocateLayoutBuffer(DiskEntry) == FALSE)
+ {
+ DPRINT("ReAllocateLayoutBuffer() failed.\n");
+ return;
+ }
+
+ /* Update the primary partition table */
+ Index = 0;
+ for (ListEntry = DiskEntry->PrimaryPartListHead.Flink;
+ ListEntry != &DiskEntry->PrimaryPartListHead;
+ ListEntry = ListEntry->Flink)
+ {
+ PartEntry = CONTAINING_RECORD(ListEntry, PARTENTRY, ListEntry);
+
+ if (PartEntry->IsPartitioned)
+ {
+ ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED);
+
+ PartitionInfo = &DiskEntry->LayoutBuffer->PartitionEntry[Index];
+ PartEntry->PartitionIndex = Index;
+
+ /* Reset the current partition number only for newly-created (unmounted)
partitions */
+ if (PartEntry->New)
+ PartEntry->PartitionNumber = 0;
+
+ PartEntry->OnDiskPartitionNumber =
(!IsContainerPartition(PartEntry->PartitionType) ? PartitionNumber : 0);
+
+ if (!IsSamePrimaryLayoutEntry(PartitionInfo, DiskEntry, PartEntry))
+ {
+ DPRINT1("Updating primary partition entry %lu\n", Index);
+
+ PartitionInfo->StartingOffset.QuadPart =
PartEntry->StartSector.QuadPart * DiskEntry->BytesPerSector;
+ PartitionInfo->PartitionLength.QuadPart =
PartEntry->SectorCount.QuadPart * DiskEntry->BytesPerSector;
+ PartitionInfo->HiddenSectors = PartEntry->StartSector.LowPart;
+ PartitionInfo->PartitionNumber = PartEntry->PartitionNumber;
+ PartitionInfo->PartitionType = PartEntry->PartitionType;
+ PartitionInfo->BootIndicator = PartEntry->BootIndicator;
+ PartitionInfo->RecognizedPartition =
IsRecognizedPartition(PartEntry->PartitionType);
+ PartitionInfo->RewritePartition = TRUE;
+ }
+
+ if (!IsContainerPartition(PartEntry->PartitionType))
+ PartitionNumber++;
+
+ Index++;
+ }
+ }
+
+ ASSERT(Index <= 4);
+
+ /* Update the logical partition table */
+ Index = 4;
+ for (ListEntry = DiskEntry->LogicalPartListHead.Flink;
+ ListEntry != &DiskEntry->LogicalPartListHead;
+ ListEntry = ListEntry->Flink)
+ {
+ PartEntry = CONTAINING_RECORD(ListEntry, PARTENTRY, ListEntry);
+
+ if (PartEntry->IsPartitioned)
+ {
+ ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED);
+
+ PartitionInfo = &DiskEntry->LayoutBuffer->PartitionEntry[Index];
+ PartEntry->PartitionIndex = Index;
+
+ /* Reset the current partition number only for newly-created (unmounted)
partitions */
+ if (PartEntry->New)
+ PartEntry->PartitionNumber = 0;
+
+ PartEntry->OnDiskPartitionNumber = PartitionNumber;
+
+ DPRINT1("Updating logical partition entry %lu\n", Index);
+
+ PartitionInfo->StartingOffset.QuadPart =
PartEntry->StartSector.QuadPart * DiskEntry->BytesPerSector;
+ PartitionInfo->PartitionLength.QuadPart =
PartEntry->SectorCount.QuadPart * DiskEntry->BytesPerSector;
+ PartitionInfo->HiddenSectors = DiskEntry->SectorAlignment;
+ PartitionInfo->PartitionNumber = PartEntry->PartitionNumber;
+ PartitionInfo->PartitionType = PartEntry->PartitionType;
+ PartitionInfo->BootIndicator = FALSE;
+ PartitionInfo->RecognizedPartition =
IsRecognizedPartition(PartEntry->PartitionType);
+ PartitionInfo->RewritePartition = TRUE;
+
+ /* Fill the link entry of the previous partition entry */
+ if (LinkInfo != NULL)
+ {
+ LinkInfo->StartingOffset.QuadPart =
(PartEntry->StartSector.QuadPart - DiskEntry->SectorAlignment) *
DiskEntry->BytesPerSector;
+ LinkInfo->PartitionLength.QuadPart =
(PartEntry->StartSector.QuadPart + DiskEntry->SectorAlignment) *
DiskEntry->BytesPerSector;
+ HiddenSectors64.QuadPart = PartEntry->StartSector.QuadPart -
DiskEntry->SectorAlignment - DiskEntry->ExtendedPartition->StartSector.QuadPart;
+ LinkInfo->HiddenSectors = HiddenSectors64.LowPart;
+ LinkInfo->PartitionNumber = 0;
+ LinkInfo->PartitionType = PARTITION_EXTENDED;
+ LinkInfo->BootIndicator = FALSE;
+ LinkInfo->RecognizedPartition = FALSE;
+ LinkInfo->RewritePartition = TRUE;
+ }
+
+ /* Save a pointer to the link entry of the current partition entry */
+ LinkInfo = &DiskEntry->LayoutBuffer->PartitionEntry[Index + 1];
+
+ PartitionNumber++;
+ Index += 4;
+ }
+ }
+
+ /* Wipe unused primary partition entries */
+ for (Index = GetPrimaryPartitionCount(DiskEntry); Index < 4; Index++)
+ {
+ DPRINT1("Primary partition entry %lu\n", Index);
+
+ PartitionInfo = &DiskEntry->LayoutBuffer->PartitionEntry[Index];
+
+ if (!IsEmptyLayoutEntry(PartitionInfo))
+ {
+ DPRINT1("Wiping primary partition entry %lu\n", Index);
+
+ PartitionInfo->StartingOffset.QuadPart = 0;
+ PartitionInfo->PartitionLength.QuadPart = 0;
+ PartitionInfo->HiddenSectors = 0;
+ PartitionInfo->PartitionNumber = 0;
+ PartitionInfo->PartitionType = PARTITION_ENTRY_UNUSED;
+ PartitionInfo->BootIndicator = FALSE;
+ PartitionInfo->RecognizedPartition = FALSE;
+ PartitionInfo->RewritePartition = TRUE;
+ }
+ }
+
+ /* Wipe unused logical partition entries */
+ for (Index = 4; Index < DiskEntry->LayoutBuffer->PartitionCount; Index++)
+ {
+ if (Index % 4 >= 2)
+ {
+ DPRINT1("Logical partition entry %lu\n", Index);
+
+ PartitionInfo = &DiskEntry->LayoutBuffer->PartitionEntry[Index];
+
+ if (!IsEmptyLayoutEntry(PartitionInfo))
+ {
+ DPRINT1("Wiping partition entry %lu\n", Index);
+
+ PartitionInfo->StartingOffset.QuadPart = 0;
+ PartitionInfo->PartitionLength.QuadPart = 0;
+ PartitionInfo->HiddenSectors = 0;
+ PartitionInfo->PartitionNumber = 0;
+ PartitionInfo->PartitionType = PARTITION_ENTRY_UNUSED;
+ PartitionInfo->BootIndicator = FALSE;
+ PartitionInfo->RecognizedPartition = FALSE;
+ PartitionInfo->RewritePartition = TRUE;
+ }
+ }
+ }
+
+ DiskEntry->Dirty = TRUE;
+}
+
+
+PPARTENTRY
+GetPrevUnpartitionedEntry(
+ IN PPARTENTRY PartEntry)
+{
+ PDISKENTRY DiskEntry = PartEntry->DiskEntry;
+ PPARTENTRY PrevPartEntry;
+ PLIST_ENTRY ListHead;
+
+ if (PartEntry->LogicalPartition)
+ ListHead = &DiskEntry->LogicalPartListHead;
+ else
+ ListHead = &DiskEntry->PrimaryPartListHead;
+
+ if (PartEntry->ListEntry.Blink != ListHead)
+ {
+ PrevPartEntry = CONTAINING_RECORD(PartEntry->ListEntry.Blink,
+ PARTENTRY,
+ ListEntry);
+ if (!PrevPartEntry->IsPartitioned)
+ {
+ ASSERT(PrevPartEntry->PartitionType == PARTITION_ENTRY_UNUSED);
+ return PrevPartEntry;
+ }
+ }
+
+ return NULL;
+}
+
+
+PPARTENTRY
+GetNextUnpartitionedEntry(
+ IN PPARTENTRY PartEntry)
+{
+ PDISKENTRY DiskEntry = PartEntry->DiskEntry;
+ PPARTENTRY NextPartEntry;
+ PLIST_ENTRY ListHead;
+
+ if (PartEntry->LogicalPartition)
+ ListHead = &DiskEntry->LogicalPartListHead;
+ else
+ ListHead = &DiskEntry->PrimaryPartListHead;
+
+ if (PartEntry->ListEntry.Flink != ListHead)
+ {
+ NextPartEntry = CONTAINING_RECORD(PartEntry->ListEntry.Flink,
+ PARTENTRY,
+ ListEntry);
+ if (!NextPartEntry->IsPartitioned)
+ {
+ ASSERT(NextPartEntry->PartitionType == PARTITION_ENTRY_UNUSED);
+ return NextPartEntry;
+ }
+ }
+
+ return NULL;
+}
+
+NTSTATUS
+DismountVolume(
+ IN PPARTENTRY PartEntry)
+{
+ NTSTATUS Status;
+ NTSTATUS LockStatus;
+ UNICODE_STRING Name;
+ OBJECT_ATTRIBUTES ObjectAttributes;
+ IO_STATUS_BLOCK IoStatusBlock;
+ HANDLE PartitionHandle;
+ WCHAR Buffer[MAX_PATH];
+
+ /* Check whether the partition is valid and was mounted by the system */
+ if (!PartEntry->IsPartitioned ||
+ IsContainerPartition(PartEntry->PartitionType) ||
+ !IsRecognizedPartition(PartEntry->PartitionType) ||
+ PartEntry->FormatState == UnknownFormat ||
+ // NOTE: If FormatState == Unformatted but *FileSystem != 0 this means
+ // it has been usually mounted with RawFS and thus needs to be dismounted.
+/* !*PartEntry->FileSystem || */
+ PartEntry->PartitionNumber == 0)
+ {
+ /* The partition is not mounted, so just return success */
+ return STATUS_SUCCESS;
+ }
+
+ ASSERT(PartEntry->PartitionType != PARTITION_ENTRY_UNUSED);
+
+ /* Open the volume */
+ StringCchPrintfW(Buffer, ARRAYSIZE(Buffer),
+ L"\\Device\\Harddisk%lu\\Partition%lu",
+ PartEntry->DiskEntry->DiskNumber,
+ PartEntry->PartitionNumber);
+ RtlInitUnicodeString(&Name, Buffer);
+
+ InitializeObjectAttributes(&ObjectAttributes,
+ &Name,
+ OBJ_CASE_INSENSITIVE,
+ NULL,
+ NULL);
+
+ Status = NtOpenFile(&PartitionHandle,
+ GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE,
+ &ObjectAttributes,
+ &IoStatusBlock,
+ FILE_SHARE_READ | FILE_SHARE_WRITE,
+ FILE_SYNCHRONOUS_IO_NONALERT);
+ if (!NT_SUCCESS(Status))
+ {
+ DPRINT1("ERROR: Cannot open volume %wZ for dismounting! (Status
0x%lx)\n", &Name, Status);
+ return Status;
+ }
+
+ /* Lock the volume */
+ LockStatus = NtFsControlFile(PartitionHandle,
+ NULL,
+ NULL,
+ NULL,
+ &IoStatusBlock,
+ FSCTL_LOCK_VOLUME,
+ NULL,
+ 0,
+ NULL,
+ 0);
+ if (!NT_SUCCESS(LockStatus))
+ {
+ DPRINT1("WARNING: Failed to lock volume! Operations may fail! (Status
0x%lx)\n", LockStatus);
+ }
+
+ /* Dismount the volume */
+ Status = NtFsControlFile(PartitionHandle,
+ NULL,
+ NULL,
+ NULL,
+ &IoStatusBlock,
+ FSCTL_DISMOUNT_VOLUME,
+ NULL,
+ 0,
+ NULL,
+ 0);
+ if (!NT_SUCCESS(Status))
+ {
+ DPRINT1("Failed to unmount volume (Status 0x%lx)\n", Status);
+ }
+
+ /* Unlock the volume */
+ LockStatus = NtFsControlFile(PartitionHandle,
+ NULL,
+ NULL,
+ NULL,
+ &IoStatusBlock,
+ FSCTL_UNLOCK_VOLUME,
+ NULL,
+ 0,
+ NULL,
+ 0);
+ if (!NT_SUCCESS(LockStatus))
+ {
+ DPRINT1("Failed to unlock volume (Status 0x%lx)\n", LockStatus);
+ }
+
+ /* Close the volume */
+ NtClose(PartitionHandle);
+
+ return Status;
+}
+
/* EOF */
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Eric Kohl