Function silc_sftp_open
SYNOPSIS
void silc_sftp_open(SilcSFTP sftp,
const char *filename,
SilcSFTPFileOperation pflags,
SilcSFTPAttributes attrs,
SilcSFTPHandleCallback callback,
void *context);
DESCRIPTION
Open a file indicated by the `filename' with flags indicated by the
`pflags', and with attributes indicated by the `attsr'. Calls the
`callback' to return the opened file handle.