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-rw-r--r--winsup/w32api/include/winioctl.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/winsup/w32api/include/winioctl.h b/winsup/w32api/include/winioctl.h
index 44704d744..efa0b732e 100644
--- a/winsup/w32api/include/winioctl.h
+++ b/winsup/w32api/include/winioctl.h
@@ -432,9 +432,12 @@ typedef struct _DRIVE_LAYOUT_INFORMATION_GPT {
LARGE_INTEGER UsableLength;
ULONG MaxPartitionCount;
} DRIVE_LAYOUT_INFORMATION_GPT,*PDRIVE_LAYOUT_INFORMATION_GPT;
+#ifndef _DRIVE_LAYOUT_INFORMATION_MBR_DEFINED
+#define _DRIVE_LAYOUT_INFORMATION_MBR_DEFINED
typedef struct _DRIVE_LAYOUT_INFORMATION_MBR {
ULONG Signature;
} DRIVE_LAYOUT_INFORMATION_MBR, *PDRIVE_LAYOUT_INFORMATION_MBR;
+#endif
typedef struct _PARTITION_INFORMATION_MBR {
BYTE PartitionType;
BOOLEAN BootIndicator;