cvs commit: src/usr.sbin/pkg_install/lib url.c
ru at FreeBSD.org
Wed Mar 7 11:21:10 UTC 2007
On Wed, Mar 07, 2007 at 05:15:08PM +1100, Bruce Evans wrote:
> On Tue, 6 Mar 2007, Tim Kientzle wrote:
> >>>>>... GNU tar(1) implied the
> >>>>>-p option for root, but BSD tar(1) doesn't do that.
> >>>>Hmmm... This might actually be considered a bsdtar bug.
> >>>>I'll look into it.
> >>>That behavior of BSD tar(1) surprised me, to be honest.
> >It's a trivial fix; there's already a check for whether
> >tar is being run by root. If so, it sets _EXTRACT_OWNER
> >to restore the owner. I just need to fill in the flags
> >associated with -p as well.
> >One problem that I don't see documented in any GNU tar
> >docs I can find: Is there a way to suppress this behavior
> >for root in GNU tar?
> >From tar.info:
> Do not attempt to restore ownership when extracting. This is the
> default behavior for ordinary users, so this option has an effect
> only for the superuser.
You probably wanted this instead:
: When `tar' is extracting an archive, it normally subtracts the
: users' umask from the permissions specified in the archive and
: uses that number as the permissions to create the destination
: file. Specifying this option instructs `tar' that it should use
: the permissions directly from the archive. *Note Writing::.
: When extracting an archive, subtract the user's umask from files
: from the permissions specified in the archive. This is the
: default behavior for ordinary users; this option has an effect
: only for the superuser.
It doesn't say it explicitly that -p is the default option for root,
nowehre, but you can guess it from reading the last sentence. ;)
ru at FreeBSD.org
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