Does iOS (or iPhone OS) support file operations via SMB network shares? If so, are there any documents about how to do this?
Not sure about SMB, but I was able to read/write files on a jailbroken IPad using SFTP. OS versions 4.1, 4.2, 4.3.
On a side note, I think that the question needs a bit of clarification - what exactly are you trying to do, and whether you're working with a regular or a jailbroken device. Answers may vary greatly one knowing these things.