>Number: 159586
>Category: conf
>Synopsis: mergemaster -p breaks /etc/group when /usr/src/etc/group is
>0600
>Confidential: no
>Severity: non-critical
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun Aug 07 16:00:30 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator: J R M
>Release: FreeBSD 8.0-RELEASE-p2 i386
>Organization:
n/a
>Environment:
System: FreeBSD inferno 8.0-RELEASE-p2 FreeBSD 8.0-RELEASE-p2 #0: Tue Jan 5
16:02:27 UTC 2010
[email protected]:/usr/obj/usr/src/sys/GENERIC i386
>Description:
When performing a 'mergemaster -p' as part of an upgrade, and
merging the /etc/group file, when it installs the file it
breaks the permissions on /etc/group to 0600 when the /usr/src/etc/group
file is set to 0600 from what I can tell. This is irrespective of
the umask set by the user. On my systems I've always kept
/usr/src to 077 during cvsup. This has never been a problem in the
past and I've been using these same permissions on /usr/src since
3.x days -- This only seems to have cropped up in 8.x.
Running mergemaster -x, I can see the following:
+ [ -n /etc -a ! -d /etc ]
+ find_mode ./etc/group
+ local OCTAL
+ echo 'obase=10; ibase=8; 022'
+ bc
+ stat -f %OMp%OLp ./etc/group
+ bc
+ echo 'obase=10; ibase=8; 0600'
+ OCTAL=384
+ printf '%04o\n' 384
+ FILE_MODE=0600
+ [ ! -x ./etc/group ]
+ do_install_and_rm 0600 ./etc/group /etc
+ [ ! -d /etc/group ]
+ install -m 0600 ./etc/group /etc
+ unlink ./etc/group
+ return 0
+ echo ' *** Merged version of ./etc/group installed successfully'
The permissions on /var/tmp/temproot/etc/group and group.merged
stay at 0600 and this seems to pass through to /etc when the
install takes place. This seems to be a bug to me. Other configuration
files seem to install perfectly without any issue with their
individual permissions.
>How-To-Repeat:
Set /usr/src/etc/group to 0600 permissions. Run 'mergemaster -p'
ensuring that the installed /etc/group file differs sufficiently
from /usr/src/etc/group. Hit 'install' or 'merge' to merge the
file. The file will be installed with 0600 permissions. This
works perfectly when /usr/src/etc/group has 0644 permissions - but
this situation cannot be guaranteed - and has never been
required in the past (nor is a requirement for other files). I
suspect this problem also affects /etc/master.passwd but because
this file should be 0600, it is not noticed.
Note: if you mergemaster the entire tree during a regular
mergemaster, the permissions on /etc/group are handled correctly.
>Fix:
Modify mergemaster to properly handle the permissions on
/etc/group during 'mergemaster -p' as it does other files
during a regular mermgemaster
>Release-Note:
>Audit-Trail:
>Unformatted:
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