Как создать hard link на NTFS

#include <windows.h>
#include <stdio.h>
#pragma hdrstop
#define err doerr( __FILE__, __LINE__ )

void doerr( const char *file, int line )
{
 DWORD e;

 e = GetLastError();
 if ( e == 0 )
 return;

 printf( "%s(%d): gle = %lu\n", file, line, e );
 exit( 2 );
}

void enableprivs()
{
 HANDLE hToken;
 byte buf[sizeof TOKEN_PRIVILEGES * 2];
 TOKEN_PRIVILEGES & tkp = *( (TOKEN_PRIVILEGES *) buf );

 if ( ! OpenProcessToken( GetCurrentProcess(),
 TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken ) )
 err;

 // берем SeBackupPrivilege и SeRestorePrivilege

 if ( !LookupPrivilegeValue( NULL, SE_BACKUP_NAME, &tkp.Privileges[0].Luid ) )
 err;

 if ( !LookupPrivilegeValue( NULL, SE_RESTORE_NAME, &tkp.Privileges[1].Luid ) )
 err;

 tkp.PrivilegeCount = 2;
 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
 tkp.Privileges[1].Attributes = SE_PRIVILEGE_ENABLED;

 AdjustTokenPrivileges( hToken, FALSE, &tkp, sizeof tkp,
 NULL, NULL );
}

int main( int argc, char *argv[] )
{
 HANDLE fh;

 if ( argc != 3 )
 {
 printf( "usage: lnw {file} {new_link_name}\n" );
 return 1;
 }
 enableprivs();

 fh = CreateFile( argv[1], GENERIC_WRITE, 0, NULL, OPEN_EXISTING,
 FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_POSIX_SEMANTICS, NULL );
 if ( fh == INVALID_HANDLE_VALUE || fh == NULL ) err;

 static char buf1[MAX_PATH];
 static wchar_t buf2[MAX_PATH * 2];
 char *p;
 void *ctx = NULL;
 WIN32_STREAM_ID wsi;
 DWORD numwritten;

 GetFullPathName( argv[2], MAX_PATH, &buf1[0], &p );

 wsi.dwStreamId = BACKUP_LINK;
 wsi.dwStreamAttributes = 0;
 wsi.dwStreamNameSize = 0;
 wsi.Size.QuadPart = strlen( buf1 ) * 2 + 2;
 MultiByteToWideChar( CP_ACP, 0, buf1, strlen( buf1 ) + 1, buf2, MAX_PATH );

 if ( ! BackupWrite( fh, (byte *) &wsi, 20, &numwritten, FALSE, FALSE, &ctx )
)err;
 if ( numwritten != 20 ) err;

 if ( ! BackupWrite( fh, (byte *) buf2, wsi.Size.LowPart, &numwritten, FALSE,
FALSE, &ctx ) )err;
 if ( numwritten != wsi.Size.LowPart )err;

 BackupWrite( fh, (byte *) &buf1[0], 0, &numwritten, TRUE, FALSE, &ctx );
 CloseHandle( fh );
 return 0;
}