SDO upload of strings

[jafem]

To start an SDO upload, the buffer size must be specified in COCSdoRequestUpload.

CO_ERR COCSdoRequestUpload(CO_CSDO *csdo,
                           uint32_t key,
                           uint8_t *buf,
                           uint32_t size,
                           CO_CSDO_CALLBACK_T callback,
                           uint32_t timeout)

For uploading null-terminated strings the transferred object size depends on the position of the Nul terminator. Without knowing the exact string size in advance, the upload will fail.

I adapted the size check obj_size == csdo->Tfer.Size to obj_size <= csdo->Tfer.Size in COCSdoInitUploadSegmented to overcome this issue.

static CO_ERR COCSdoInitUploadSegmented(CO_CSDO *csdo)
{
    ...

    /* verify size, Idx, Sub */
    if ((obj_size <= csdo->Tfer.Size) &&
        (Idx == csdo->Tfer.Idx) &&
        (Sub == csdo->Tfer.Sub)) {

       ...

   }
 
   ...
}

Is this modification permissible or are there side effects?