git/compat/win32/flush.c

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#include "git-compat-util.h"
#include <winternl.h>
#include "lazyload.h"
int win32_fsync_no_flush(int fd)
{
IO_STATUS_BLOCK io_status;
#define FLUSH_FLAGS_FILE_DATA_ONLY 1
DECLARE_PROC_ADDR(ntdll.dll, NTSTATUS, NTAPI, NtFlushBuffersFileEx,
HANDLE FileHandle, ULONG Flags, PVOID Parameters, ULONG ParameterSize,
PIO_STATUS_BLOCK IoStatusBlock);
if (!INIT_PROC_ADDR(NtFlushBuffersFileEx)) {
errno = ENOSYS;
return -1;
}
memset(&io_status, 0, sizeof(io_status));
if (NtFlushBuffersFileEx((HANDLE)_get_osfhandle(fd), FLUSH_FLAGS_FILE_DATA_ONLY,
NULL, 0, &io_status)) {
errno = EINVAL;
return -1;
}
return 0;
}