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mdbx-windows: use SetFileInformationByHandle() when available.

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Change-Id: I27d9d4271d4328947ad68cdf30af61a31978b4f9
This commit is contained in:
Leonid Yuriev 2018-12-26 19:53:03 +03:00
parent e3ff44d01b
commit 624968b74c
3 changed files with 26 additions and 5 deletions
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5
src/lck-windows.c
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@ -663,6 +663,7 @@ MDBX_srwlock_function mdbx_srwlock_Init, mdbx_srwlock_AcquireShared,
MDBX_GetFileInformationByHandleEx mdbx_GetFileInformationByHandleEx;
MDBX_GetVolumeInformationByHandleW mdbx_GetVolumeInformationByHandleW;
MDBX_GetFinalPathNameByHandleW mdbx_GetFinalPathNameByHandleW;
MDBX_SetFileInformationByHandle mdbx_SetFileInformationByHandle;
MDBX_NtFsControlFile mdbx_NtFsControlFile;
static void mdbx_winnt_import(void) {
@ -699,6 +700,10 @@ static void mdbx_winnt_import(void) {
(MDBX_GetFinalPathNameByHandleW)GetProcAddress(
hKernel32dll, "GetFinalPathNameByHandleW");
mdbx_SetFileInformationByHandle =
(MDBX_SetFileInformationByHandle)GetProcAddress(
hKernel32dll, "SetFileInformationByHandle");
const HINSTANCE hNtdll = GetModuleHandleA("ntdll.dll");
mdbx_NtFsControlFile =
(MDBX_NtFsControlFile)GetProcAddress(hNtdll, "NtFsControlFile");

20
src/osal.c
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@ -741,11 +741,21 @@ int mdbx_filesize(mdbx_filehandle_t fd, uint64_t *length) {
int mdbx_ftruncate(mdbx_filehandle_t fd, uint64_t length) {
#if defined(_WIN32) || defined(_WIN64)
LARGE_INTEGER li;
li.QuadPart = length;
return (SetFilePointerEx(fd, li, NULL, FILE_BEGIN) && SetEndOfFile(fd))
? MDBX_SUCCESS
: GetLastError();
if (mdbx_SetFileInformationByHandle) {
FILE_END_OF_FILE_INFO EndOfFileInfo;
EndOfFileInfo.EndOfFile.QuadPart = length;
return mdbx_SetFileInformationByHandle(fd, FileEndOfFileInfo,
&EndOfFileInfo,
sizeof(FILE_END_OF_FILE_INFO))
? MDBX_SUCCESS
: GetLastError();
} else {
LARGE_INTEGER li;
li.QuadPart = length;
return (SetFilePointerEx(fd, li, NULL, FILE_BEGIN) && SetEndOfFile(fd))
? MDBX_SUCCESS
: GetLastError();
}
#else
STATIC_ASSERT_MSG(sizeof(off_t) >= sizeof(size_t),
"libmdbx requires 64-bit file I/O on 64-bit systems");

6
src/osal.h
View File

@ -627,6 +627,12 @@ typedef DWORD(WINAPI *MDBX_GetFinalPathNameByHandleW)(_In_ HANDLE hFile,
_In_ DWORD dwFlags);
extern MDBX_GetFinalPathNameByHandleW mdbx_GetFinalPathNameByHandleW;
typedef BOOL(WINAPI *MDBX_SetFileInformationByHandle)(
_In_ HANDLE hFile, _In_ FILE_INFO_BY_HANDLE_CLASS FileInformationClass,
_Out_ LPVOID lpFileInformation, _In_ DWORD dwBufferSize);
extern MDBX_SetFileInformationByHandle mdbx_SetFileInformationByHandle;
typedef NTSTATUS(NTAPI *MDBX_NtFsControlFile)(
IN HANDLE FileHandle, IN OUT HANDLE Event,
IN OUT PVOID /* PIO_APC_ROUTINE */ ApcRoutine, IN OUT PVOID ApcContext,