/etc/mtab mode change with dismount

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3 total messages Started by J.B. Nicholson-Owens Fri, 06 Nov 1992 00:42

#1163

Author: J.B. Nicholson-Owens
Date: Fri, 06 Nov 1992 00:42

17 lines
950 bytes

What is the correct way to keep the mode of /etc/mtab from changing to
root-only read and write when a volume is unmounted?  I inserted and
ejected a floppy disk on my 3.0 Cube and it changed the mode of
/etc/mtab so that nobody but root can use df(1) (the 'df' command).

On a related note, is the fix for this to make df(1) setuid root?  I'm
hesitant to do that, but if that's the only way to fix this problem...

And lastly, on a clean 3.0 system, what is the output of the following
command?:

ls -lg /bin/df /etc/mtab

Thanks.
-- 
-- Jeff (jeffo@uiuc.edu)
-- NeXTmail ok

Re: /etc/mtab mode change with dismount

#1172

Author: Rex Pruess
Date: Fri, 06 Nov 1992 12:35

14 lines
1094 bytes

jeffo@ux1.cso.uiuc.edu writes:
   > What is the correct way to keep the mode of /etc/mtab from changing to
   > root-only read and write when a volume is unmounted?
   > ... is the fix for this to make df(1) setuid root?

You could stuff something like the following in '/etc/crontab.local':

          1,31 * * * *  root  /bin/chmod 644 /etc/mtab

Not elegant, but probably adequate.
--
--
  Rex Pruess, Weeg Computing Center, University of Iowa, Iowa City, IA
     NeXTmail: Rex-Pruess@uiowa.edu ......... Phone: (319) 335-5452

Re: /etc/mtab mode change with dismount

#1174

Author: Paul S. Sears
Date: Fri, 06 Nov 1992 16:19

29 lines
1514 bytes

In article <Bx9rBD.F2E@ux1.cso.uiuc.edu> jeffo@ux1.cso.uiuc.edu (J.B.  
Nicholson-Owens) writes:

=>And lastly, on a clean 3.0 system, what is the output of the following
=>command?:
=>
=>ls -lg /bin/df /etc/mtab
=>

server1# ls -lg /bin/df /etc/mtab
-rwxr-sr-x  1 root     operator    6692 Jul 21 11:40 /bin/df*
-rw-r--r--  1 root     wheel        762 Nov  1 20:07 /etc/mtab

server2# ls -lg /bin/df /etc/mtab
-rwxr-sr-x  1 root     operator    6692 Jul 21 11:40 /bin/df*
-rw-r--r--  1 root     wheel        643 Nov  6 08:56 /etc/mtab

=>Thanks.
=>-- 
=>-- Jeff (jeffo@uiuc.edu)
=>-- NeXTmail ok

--
Paul S. Sears                *  sears@uh.edu (NeXT Mail OK)
The University of Houston    *  suggestions@tree.egr.uh.edu (NeXT
Engineering Computing Center *  comments, complaints, questions)
NeXT System Administration   *  DoD#1967 '83 NightHawk 650SC 
          >>> SSI Diving Certification #755020059 <<<
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