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possiblylinux127

[SOLVED] TFTP error: "Only absolute filenames allowed" (sh.itjust.works)

submitted 11 months ago* (last edited 11 months ago) by [email protected] to c/linuxquestions

4 comments fedilink hide all child comments

Workaround

I'm not sure what was going wrong with what I was doing initially, but, thanks to @[email protected], as suggested, I disabled the tftp server system service, and, instead, started it with the following command:

sudo in.tftpd -L /srv/tftp --verbose --permissive -s

and it then flashed successfully.

Original Post

I'm trying to flash firmware to a router (Archer C7) using TFTP, but, when the router makes the request for the firmware file over TFTP, the TFTP server responds with the following error

Error code: Access violation (2)
Error message: Only absolute filenames allowed

This is the config for tftpd in /etc/conf.d/tftpd:

TFTP_OPTIONS="-s"
TFTP_DIRECTORY="/srv/tftp"
TFTP_USERNAME="tftp"
TFTP_ADDRESS="192.168.0.66:69"

I have the firmware file in /srv/tftp, and both the firmware file, and /srv/tftp have chmod 777 permissions.

The TFTP server is running on Archlinux, and is installed as tftp-hpa from the arch repos.

If I test as a client, I can get it to download if I specify the full (absolute) path to the file /srv/tftp/filename, so it seems that the config isn't pointing the server to /srv/tftp as the relative path... How would I go about fixing that?

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[–] [email protected] 2 points 11 months ago (1 children)

It probably won't help, but have you tried mapping tftp to / and going to the absolute path from there?

[–] [email protected] 2 points 11 months ago

I set TFTP_DIRECTORY="/", and then restarted the service, but, unfortunately, it didn't work.