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[USETUP]

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Allocate a disk layout buffer that is large enough to keep all partitions of the disk.

CORE-5818 resolve

svn path=/trunk/; revision=68122
This commit is contained in:
Eric Kohl 2015-06-13 12:46:42 +00:00
parent 09b36e8cd5
commit 1d240a84ee
1 changed files with 32 additions and 5 deletions
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37
reactos/base/setup/usetup/partlist.c
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@ -1151,12 +1151,9 @@ AddDiskToList(
InsertAscendingList(&List->DiskListHead, DiskEntry, DISKENTRY, ListEntry, DiskNumber);
/*
* Allocate a buffer for 26 logical drives (2 entries each == 52)
* plus the main partiton table (4 entries). Total 56 entries.
*/
/* Allocate a layout buffer for 4 partition entries first */
LayoutBufferSize = sizeof(DRIVE_LAYOUT_INFORMATION) +
((56 - ANYSIZE_ARRAY) * sizeof(PARTITION_INFORMATION));
((4 - ANYSIZE_ARRAY) * sizeof(PARTITION_INFORMATION));
DiskEntry->LayoutBuffer = RtlAllocateHeap(ProcessHeap,
HEAP_ZERO_MEMORY,
LayoutBufferSize);
@ -1175,6 +1172,36 @@ AddDiskToList(
0,
DiskEntry->LayoutBuffer,
LayoutBufferSize);
DPRINT("Status: 0x%08lx\n", Status);
DPRINT("PartitionCount: %lu\n", DiskEntry->LayoutBuffer->PartitionCount);
/* If we need more than 4 partition entries, reallocte the buffer and
retrieve the disk layout again */
if (!NT_SUCCESS(Status) && DiskEntry->LayoutBuffer->PartitionCount > 4)
{
LayoutBufferSize = sizeof(DRIVE_LAYOUT_INFORMATION) +
((DiskEntry->LayoutBuffer->PartitionCount - ANYSIZE_ARRAY) * sizeof(PARTITION_INFORMATION));
DiskEntry->LayoutBuffer = RtlReAllocateHeap(ProcessHeap,
HEAP_ZERO_MEMORY,
DiskEntry->LayoutBuffer,
LayoutBufferSize);
if (DiskEntry->LayoutBuffer == NULL)
{
return;
}
Status = NtDeviceIoControlFile(FileHandle,
NULL,
NULL,
NULL,
&Iosb,
IOCTL_DISK_GET_DRIVE_LAYOUT,
NULL,
0,
DiskEntry->LayoutBuffer,
LayoutBufferSize);
}
if (NT_SUCCESS(Status))
{
#ifdef DUMP_PARTITION_TABLE