Rename File on Disk using SetFileInformationByHandle | Win32 API

rename.c

#define _UNICODE
#define UNICODE

#include <windows.h>

#ifdef __cplusplus
#include <cstdio>
#else
#include <stdio.h>
#endif

int wmain(int argc, const WCHAR** argv)
{  
    if (argc < 2)
    {
        wprintf_s(L"Usage: %ws [src path] [dst path]\n", argv[0]);
        return 1;
    }
    HANDLE hFile = CreateFile(argv[1],
        DELETE,
        0,
        NULL,
        OPEN_EXISTING,
        FILE_ATTRIBUTE_NORMAL,
        NULL);
    if (hFile == INVALID_HANDLE_VALUE)
    {
        puts("error: CreateFile failed");
        return GetLastError();
    }

    DWORD dstLen = lstrlenW(argv[2]);
    DWORD infoSize = sizeof(FILE_RENAME_INFO) + (dstLen + 1) * 2;
    FILE_RENAME_INFO* info = (FILE_RENAME_INFO*)malloc(infoSize);
    info->ReplaceIfExists =  TRUE;
    info->RootDirectory = NULL;
    info->FileNameLength = dstLen;
    memcpy(info->FileName, argv[2], (dstLen + 1)*2);
    BOOL res = SetFileInformationByHandle(hFile, FileRenameInfo, info, infoSize);
    free(info);

    if(res==FALSE){
        puts("error: SetFileInformationByHandle failed");
        return GetLastError();
    }
    return 0;
}