sector

#include <windows.h>

#include <stdio.h>

int main(void){
    char const * fname = "test.txt";
    int err = 0;
    HANDLE file = CreateFile(fname,GENERIC_READ,FILE_SHARE_READ,NULL,OPEN_ALWAYS,FILE_ATTRIBUTE_NORMAL,NULL);
    if(file==INVALID_HANDLE_VALUE){
        fprintf(stderr,"Open of \"%s\" failed.\n",fname);
        return 1;
    }
    FILE_STORAGE_INFO fsi;
    if(GetFileInformationByHandleEx(
        file,
        FileStorageInfo,
        &fsi,
        sizeof(fsi) == 0))
    {
        fputs("GetFileInformationByHandleEx failed.\n",stderr);
        err = 1;
        goto quick_err;
    }

    printf("fsi.LogicalBytesPerSector: %lu\n"
           "fsi.PhysicalBytesPerSectorForAtomicity: %lu\n"
           "fsi.PhysicalBytesPerSectorForPerformance: %lu\n"
           "fsi.FileSystemEffectivePhysicalBytesPerSectorForAtomicity: %lu\n"
           "fsi.Flags: %lu\n"
           "fsi.ByteOffsetForSectorAlignment: %lu\n"
           "fsi.ByteOffsetForPartitionAlignment: %lu\n",
        fsi.LogicalBytesPerSector,
        fsi.PhysicalBytesPerSectorForAtomicity,
        fsi.PhysicalBytesPerSectorForPerformance,
        fsi.FileSystemEffectivePhysicalBytesPerSectorForAtomicity,
        fsi.Flags,
        fsi.ByteOffsetForSectorAlignment,
        fsi.ByteOffsetForPartitionAlignment);
    long spc;
    long bps;//
    long nfc;
    long tnc;
    if(GetDiskFreeSpaceW(NULL,&spc,&bps,&nfc,&tnc)==0){
        fputs("GetFreeSpaceW failed.\n",stderr);
        err = 1;
        goto quick_err;
    }
    printf("spc: %ld\nbps: %ld\nnfc: %ld\ntnc: %ld\n",spc,bps,nfc,tnc);
quick_err:
    CloseHandle(file);
    return err;
}