Bdtyktl

System info:

Linux ravi-Inspiron-N5010 3.13.0-46-generic #79-Ubuntu SMP Tue Mar 10

20:08:14 UTC 2015 i686 i686 i686 GNU/Linux

Using Ubuntu 14.04.2 LTS.

I am struggling to run tftp localhost.

Tried:

root@ravi-Inspiron-N5010:/home/ravi/Desktop# service tftpd-hpa restart

tftpd-hpa stop/waiting

tftpd-hpa start/running

root@ravi-Inspiron-N5010:/home/ravi/Desktop# service tftpd-hpa status

tftpd-hpa start/running

Now I get error:

root@ravi-Inspiron-N5010:/home/ravi/Desktop# tftp 127.0.0.1

tftp> put test

Error code 2: Access violation

tftp> 

permission of the file I am trying to put is :

root@ravi-Inspiron-N5010:/home/ravi/Desktop# ls -ld test 

-rwxrwxrwx 1 ravi ravi 0 Mar 21 20:09 test

Permission of the /tftpboot folder:

root@ravi-Inspiron-N5010:/# ls -ld  tftpboot/

drwxrwxrwx 2 nobody root 4096 Mar 15 15:34 tftpboot/

Additional Information

root@ravi-Inspiron-N5010:/home/ravi/Desktop# nano /etc/xinetd.d/tftp



service tftp





{

   protocol = udp

   port = 69

   socket_type = dgram

   wait = yes

   user = nobody

   server = /usr/sbin/in.tftpd

   server_args = /tftpboot -s

   disable = no

}

Please help me resolve this issue.

Check syslog and you will see that :

 tftpd: serving file from /srv/tftp

Basically there is a bug and you will need in your case to move all files from the folder /tftpboot to /srv/tftp (make the folder /srv/tftp if doens't exist) and make sure you give 777 permissions and to all file inside, restart xinetd and it will works!

The file you want to put via tftp must exist in the destination directory, and have permissions allowing it to be overwritten. For your instance, test must exist in /tftpboot.

You can see the reason in the tftp man page BUGS section.

I'm struggling to solve how to put a new file via tftp, but still don't know how.

This could be because 14.04 has a tftp server setting in /etc/inetd.conf:

#BOOT: TFTP service is provided primarily for booting.  Most sites

#       run this only on machines acting as "boot servers."

tftp    dgram  udp wait    nobody  /usr/sbin/tcpd  /usr/sbin/in.tftpd /srv/tftp

you can comment out this line and try again.

I got this from here:
http://www.beer.org/blog/tftpd-and-xinetd-on-ubuntu.html

As leondgarse mention, you cannot upload new files directly with your settings. But you can add "-c" to server_args, like:

service tftp

{

   protocol = udp

   port = 69

   socket_type = dgram

   wait = yes

   user = nobody

   server = /usr/sbin/in.tftpd

   server_args = -c -s /tftpboot

   disable = no

}

For detail, you can see man page of "in.tftpd":

   --create, -c

          Allow new files to be created.  By default, tftpd will only allow upload of files that already exist.  Files are created with default permissions allow‐

          ing anyone to read or write them, unless the --permissive or --umask options are specified.

Not sure if this is something with the design of TFTP but when doing a put it does not let you create a file.

Solution:

Create the file before hand and give 777 rights. Run transfer again and it should work.

Please check the files mode bits.

In my case, the tftp root directory is /opt/tftpboot/

Using ls -l command, I could see the file mode was 600, so when I try to access tftp to get this file with anonymous, it reports an access violation.

This may be the cause of this error. But there may be another reason for it.