Files created with group other than default

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2 total messages Started by Michael Pizolato Tue, 03 Nov 1992 16:42

#121

Author: Michael Pizolato
Date: Tue, 03 Nov 1992 16:42

16 lines
1277 bytes

When creating files in the / or /tmp directory, the group assigned to the file  is always "wheel" whether or not the user has wheel as the default group.  In fact, the file has wheel for the group whether or not the user has wheel in the group list at all!  Try this, both as a user who has wheel but not as the default group and as a user who does not have wheel at all:

	cd /tmp
	touch foo
	ls -lag foo

Substitue / for /tmp and try it again.  The file foo must not exist before you do this.  In our case, the group for the file foo is always wheel.  It doesn't seem to matter how the file is created - Edit does it, too.  This sounds like an OS bug.  Is this behaviour limited to system directories?  What are the rules that determine group ownership during file creation?  Anyone know anything about this?

Thanx,
Michael

--
Michael_Pizolato@afs.com
~18 kyu
Q16
NeXTMail appreciated

Re: Files created with group other than default

#128

Author: Eric P. Scott
Date: Wed, 04 Nov 1992 08:45

7 lines
787 bytes

On a "true" BSD system (e.g. NeXT), new UFS files are created
with their parent directory's group regardless of the process'
effective group.  This differs from System V UNIX.  On SunOS 4.x
(which is a hybrid of BSD and System V), setting a directory's
"setgid" bit selects BSD-style behavior.

					-=EPS=-

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