NetNews Usenet Archive 1992 #31/NN_1992_31.iso/spool/comp/os/linux/21553

Internet Message Format | 1992-12-23 | 1.6 KB

Path: sparky!uunet!cs.utexas.edu!qt.cs.utexas.edu!yale.edu!ira.uka.de!rz.uni-karlsruhe.de!fg30.rz.uni-karlsruhe.de!ig25
From: [e-mail] (Thomas Koenig)
Newsgroups: comp.os.linux
Subject: chmod weirdness in ext file system, 0.99, and mount(2)
Date: 23 Dec 1992 19:04:56 GMT
Organization: University of Karlsruhe, Germany
Lines: 21
Message-ID: <[e-mail]>
Reply-To: [e-mail]
NNTP-Posting-Host: fg30.rz.uni-karlsruhe.de

I recently experienced something weird with the chmod(1) command.  I had
a directory in my home dir whose flags were set to r--------, the uid
was my userid, and the gid was root; I had set the flags by accident,
and wanted to correct them to rwx------.  Problem:  chmod 700 dir didn't
work (permission denied).  I had to su to root to fix the permissions.
Later, I wanted to reproduce the problem, but I couldn't.

I'm running a 486/50 with a Minix partition as root and an extended file
system mounted on /usr, as partitions /dev/hda2 and /dev/hda3 on an AT
bus disk, and 0.99 with Linux' two fixes patched in by hand.  The home
directory in question was in /usr/homes, i.e. on the extended fs.
The chmod command came from the 0.98pl5 SLS distribution.

BTW, what are the parameters to the 0.99 mount(2) system call? I wanted
to write replacements for the m0, m0d, ...  - macros for mounting
filesystems from a floppy, but the manpage mentioned only three parameters,
and I could not figure out legal values for the other two...
--
Thomas Koenig, [e-mail], [e-mail]
The joy of engineering is to find a straight line on a double logarithmic
diagram.