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inc: winfsp: FSP_FILE_SYSTEM_INTERFACE: ensure it has 64 entries

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This commit is contained in:
Bill Zissimopoulos 2016-06-23 00:33:18 -07:00
parent b8b15e8035
commit ee5c584614
1 changed files with 14 additions and 0 deletions
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14
inc/winfsp/winfsp.h
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@ -576,7 +576,21 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
PVOID FileNode, PVOID Buffer, UINT64 Offset, ULONG Length,
PWSTR Pattern,
PULONG PBytesTransferred);
/*
* This ensures that this interface will always contain 64 function pointers.
* Please update when changing the interface as it is important for future compatibility.
*/
NTSTATUS (*Reserved[44])();
} FSP_FILE_SYSTEM_INTERFACE;
#if defined(WINFSP_DLL_INTERNAL)
/*
* Static_assert is a C++11 feature, but seems to work with C on MSVC 2015.
* Use it to verify that FSP_FILE_SYSTEM_INTERFACE has the right size.
*/
static_assert(sizeof(FSP_FILE_SYSTEM_INTERFACE) == 64 * sizeof(NTSTATUS (*)()),
"FSP_FILE_SYSTEM_INTERFACE must have 64 entries.");
#endif
typedef enum
{
FSP_FILE_SYSTEM_OPERATION_GUARD_STRATEGY_FINE = 0,