Very Computer

I'm attempting to port Chris Myers' deluxe ftp daemon to AIX
(it's the one used by ftp.uu.net, I believe) and I'm having
problems with the setegid() and seteuid() calls.  This section
of the code looks like it is from the original ftpd.

I've successfully compiled it, set permissions to -r-sr-xr--,
ownership to root.system, then I use 'smit inetd' to set the
the new ftpd. It works, but only for root logins. For all
others, it fails at the setegid() call in ftpd.c - with
an errno of 1, 'Not owner'.

Has anyone successfully ported this one? If so, could you tell me
how you did it?

Is there something different in the use of the sete[g|u]id
calls between SunOS (for example - where things do work) and
AIX?

Thanks,

--Paul

Quote:Turner) writes:

> Is there something different in the use of the sete[g|u]id calls
> between SunOS (for example - where things do work) and AIX?

However, there is another bug.  Apparently, the saved uid and gid are
used when checking file permissions; i.e. if your saved uid == 0, you
can write to any file.  This is not correct.

The latter bug makes it a real pain to port ftpd.  Currently, you have
to sprinkle access() calls throughout the code.

Hopefully this will be fixed soon.  B-P
--

  White atheist male (WAM) pride!

Quote:

>Is there something different in the use of the sete[g|u]id
>calls between SunOS (for example - where things do work) and
>AIX?

        setuidx( ID_EFFECTIVE|ID_REAL,0 );      /* become root */

The setuidx call gives you what you want I think.  Read info on it.
It conforms to some standard or the other, Posix I think.
--

My views are unrelated to those of IBM     |        Austin, TX
"We have no rules around here. We're trying accomplish something."-Thomas Edison

Quote:>The setuidx call gives you what you want I think.  Read info on it.
>It conforms to some standard or the other, Posix I think.