SunOS 4.1.3, ftpd umask
2007-12-25 9:58:00
Jochen Bern. Their replies are attached.
Thanks for the following ppl who replied.
From: Alex Soares <alex@nc-rj.rnp.br>
From: meng sher <mcao@freenet.com>
From: Chris Marble <cmarble@orion.ac.hmc.edu>
From: Peter M Allan <peter.allan@aeat.co.uk>
From: Jochen Bern <bern@penthesilea.uni-trier.de>
--- The original question -------
Hi,
How to change the default umask for ftpd daemon. The access mode of
uploaded files are 666. I would like to change the umask to either 022 or
077 to protect the newly uploaded files from being overwritten.
--- Answers ---------------------
>From bern@penthesilea.uni-trier.de Fri Apr 4 01:43:40 1997
Date: Thu, 3 Apr 1997 18:12:17 +0200 (MET DST)
From: Jochen Bern <bern@penthesilea.uni-trier.de>
Reply-To: bern@uni-trier.de
To: tonywu@hades.life.nthu.edu.tw
Subject: Re: SunOS 4.1.3, ftpd umask
> How to change the default umask for ftpd daemon. The access mode of
> uploaded files are 666. I would like to change the umask to either 022 or
> 077 to protect the newly uploaded files from being overwritten.
The plain Vanilla ftpd inherits its umask from inetd, which inherits
it from the Shell running the Boot Scripts (/etc/rc* on SunOS,
/etc/rc?.d/* on Solaris). In other Words: You don't have that Problem
with ftpd alone! It's a good_Thing (tm) to add a "umask 022" as first
Command to all Boot Scripts.
Setting the umask for ftpd alone is a Bit harder, you'ld probably
have to have inetd start a Wrapper instead of ftpd which does
umask 077
exec real.ftpd
or somesuch. Do you really want to do this for *all* FTP Users, or
only for Users of anonymous FTP? wu-ftpd has a separate Setup for
the latter which allows you to disable Overwrites independent from
the Permissions.
Regards,
J. Bern
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>From peter.allan@aeat.co.uk Fri Apr 4 01:43:44 1997
Date: Thu, 3 Apr 97 12:15:07 BST
From: Peter M Allan <peter.allan@aeat.co.uk>
To: tonywu@hades.life.nthu.edu.tw
Subject: Re: SunOS 4.1.3, ftpd umask
Tony,
Beside the methods suggested in this old summary,
tcp wrappers are worth having and do this for you.
> From: andrew@mdlhk.attmail.com (Andrew Law)
> Date: 20 Jun 94 06:56:40 GMT
> Subject: SUMMARY: Attributes of file created by ftp put
>
> ORIGINAL QUESTION:
>
> I have a problem in transfer files using ftp, the files that I 'put' to
> the ftp server are always created with permissions -rw-rw-rw which
> is not what I want. Everytime after the ftp, I have to telnet to
> the host and chmod the files to -rw-r--r--.
>
> Is there method to change the default permissions to -rw-r--r--?
>
> SOLUTIONS:
> 1.
> Use a wrapper on /usr/etc/in.ftpd,
>
> Wrapper: /usr/etc/in.ftpd.umask
>
> #!/bin/sh
> umask 022
> exec /usr/etc/in.ftpd.umask $*
>
> Remember to chmod +x on the wrapper.
>
> Change ftp entry in /etc/inetd.conf
>
> ftp stream tcp nowait root /usr/etc/in.ftpd.umask in.ftpd
>
> 2.
> For wu-ftpd user, use option -u022. In /etc/inetd.conf, writes
>
> ftp stream tcp nowait root /usr/local/sbin/ftpd in.ftpd -l -u022
>
> 3.
> Add 'umask 022' to /etc/rc to cause all daemons started by /etc/rc
> to have umask 022. Subsequently, /etc/rc.local, inetd, in.ftpd will
> have umask 022.
>
> 4.
> Try SITE CHMOD command in ftp.
I'm not wild about suggestion 4. I don't think it
even works on recent ftpds.
-- Peter Allan peter.allan@aeat.co.uk
Thanks,
Tony C. Wu
--
"I never think of the future. It comes soon enough." - Albert Einstein
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