On 04/05/2017 09:27 PM, Michael Engstler wrote: > Hi, > I noticed that when using the INSTREAM command and sending it a memory > buffer of a file, clamd takes the memory buffer and saves it to > the TemporaryDirectory (as defined in the config file). > > This is an unnecessary overhead as it requires disk IO in order to scan the > file which is already loaded in-memory. > Is there any way to command clamd to scan the buffer completely in-memory > without writing anything to the disk?
That's a feature that I requested many years ago because I had a non-copying MIME parser that worked on mmap()ed files, and I wanted to virus-scan some parts of the message. It was not possible, and I think it's not possible now. I suggest you to mmap() your memory region to a temp. file, ideally on tmpfs, and pass this file to clamav. That ought to minimize the overhead. Eugene
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