Re: Setting up Anon FTP?

[Joel Klecker <jk@espy.org>]

At 10:26 -0800 1998-02-26, Alan Su wrote:
>Ossama Othman wrote (Thu, 26 Feb 1998 12:31:56 -0500 (EST) ):
>|>Why are you trying to chroot to /bin/ls?  The ftpd daemon automatically
>|>does a chroot when someone logs in as "anonymous" or "ftp."  Here is an
>|>excerpt from the ftpd man page.  Did you follow what it says?
>|>
>
>Tony was trying to diagnose the problem, the same problem I'm having.
>Namely, ls depends on libc (at least) and simply copying the library
>to the ~ftp/lib directory doesn't work.  The man page mentions nothing
>about this, leading me to believe that it assumes that ls is
>statically linked.

Here is the /home/ftp on my hamm system:

(106) ttyp0@cerberus!root
[/home/ftp]# ls -lR
total 5
d--x--x--x   2 root     root         1024 Feb 17 11:15 bin/
d--x--x--x   2 root     root         1024 Feb 17 11:14 etc/
d--x--x--x   2 root     root         1024 Feb 17 11:32 lib/
dr-xr-xr-x   6 root     root         1024 Feb 11 03:17 pub/
-rw-r--r--   1 root     root          487 Dec 30 10:59 welcome.msg

bin:
total 233
---x--x--x   1 root     root        45580 Feb 17 11:15 gzip
---x--x--x   1 root     root        29428 Feb 17 11:15 ls
---x--x--x   1 root     root       102380 Feb 17 11:15 tar
---x--x--x   1 root     root        56156 Feb 17 11:15 zip

etc:
total 3
-r--r--r--   1 root     root           18 Feb 17 11:15 group
-r--r--r--   1 root     root           44 Feb 17 11:15 passwd
-r--r--r--   1 root     root          172 Feb 17 11:14 pathmsg

lib:
total 793
-r-xr-xr-x   1 root     root       161959 Jan 21 10:30 ld-2.0.6.so
lrwxrwxrwx   1 root     root           11 Feb 17 11:32 ld-linux.so.2 ->
ld-2.0.6.so
-r-xr-xr-x   1 root     root       643772 Jan 21 10:31 libc-2.0.6.so
lrwxrwxrwx   1 root     root           13 Feb 17 11:32 libc.so.6 ->
libc-2.0.6.so
[snip of the listing of pub]

Output of ldd on /home/ftp/bin/*:

(107) ttyp0@cerberus!root
[/home/ftp]# ldd bin/*
bin/gzip:
        libc.so.6 => /lib/libc.so.6 (0x40010000)
        /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x40000000)
bin/ls:
        libc.so.6 => /lib/libc.so.6 (0x40010000)
        /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x40000000)
bin/tar:
        libc.so.6 => /lib/libc.so.6 (0x40010000)
        /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x40000000)
bin/zip:
        libc.so.6 => /lib/libc.so.6 (0x40010000)
        /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x40000000)

And yes, it does work.

--
Joel "Espy" Klecker    Debian GNU/Linux Developer    <mailto:jk@espy.org>
<http://espy.org/>                               <ftp://ftp.espy.org/pub>
God shows his contempt for wealth by the kind of person He selects to
receive it.  -- Austin O'Malley (1858-1952)



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