topic Re: Error code2: Access violation when using "put" with tftp in Operating System - HP-UX

Error code2: Access violation when using "put" with tftp

Jason Tedford — Wed, 06 Dec 2006 19:34:20 GMT

I'm trying to "put" a file in the tftpdir using tftp. The directory is wide open but the file does not exist as a default. When I attemp this I get the error "Error code 2: Access violation"

However, when I pre-create and open up the file at the destination using:
> touch junk.filename
> chmod 777 junk.filename

I can successfully write or in this case overwrite the file. Is there somewhere in the inetd.conf file or elsewhere where I can allow "put" to create a file in the tftpdir?

I'm using HP/UX 11.11

Regards.
Jason

Re: Error code2: Access violation when using "put" with tftp

Steven Schweda — Wed, 06 Dec 2006 19:45:36 GMT

I don't know, but I doubt it. It's a
general property of TFTP servers to allow a
PUT only to an existing file. With the basic
security limitations of TFTP, this limitation
is supposed to help prevent people from
filling your file system with junk (which
would otherwise be even easier).

If you can allow it, you might be wiser not
to.

"man tftpd"?

[...] Furthermore, tftp
clients can only read files in that directory if they are
readable by the pseudo-user tftp, and tftp clients can only
write files in that directory if they exist and are writable by
the pseudo-user tftp.

Re: Error code2: Access violation when using "put" with tftp

Peter Godron — Thu, 07 Dec 2006 04:46:28 GMT

Hi,
and welcome to the forums !
OldSchool's answer in
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=999726
"If the server is to receive a file, it must already exist and be writeable by the user tftp."

Confirmed in "Common tftp problems"
http://docs.hp.com/en/5991-6548/ch03s05.html

Please also read:
http://forums1.itrc.hp.com/service/forums/helptips.do?#33 on how to reward any useful answers given to your questions.