Date: Thu, 16 Jan 2014 20:20:31 +0100 From: =?iso-8859-2?Q?Edward_Tomasz_Napiera=B3a?= <trasz@FreeBSD.org> To: Tim Kientzle <tim@kientzle.com> Cc: FreeBSD current <freebsd-current@freebsd.org> Subject: Re: mtree acl support Message-ID: <C48E8727-B311-4BC7-B80A-4F0288C1CBB7@FreeBSD.org> In-Reply-To: <93FD368C-21D1-4A5F-986A-859D83AFB5BF@kientzle.com> References: <1389710847.2685.70601137.72B5C024@webmail.messagingengine.com> <93FD368C-21D1-4A5F-986A-859D83AFB5BF@kientzle.com>
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Wiadomość napisana przez Tim Kientzle w dniu 16 sty 2014, o godz. 06:11: > On Jan 14, 2014, at 6:47 AM, Mark Felder <feld@freebsd.org> wrote: > >> I was recently talking to someone about how one would backup / restore >> ACLs reliably. I didn't see any mention of ACLs in the mtree man page >> and after a quick google I came upon this old mailing list post: >> >> http://lists.freebsd.org/pipermail/freebsd-hackers/2008-April/024173.html >> >> patch in list is here: http://heka.cenkes.org/sat/diffs/mtree_acl.diff >> I've mirrored it here: https://feld.me/freebsd/mtree_acl.diff >> >> This old patch appears to still apply cleanly. I hate to see a patch die >> and be forgotten. > > One problem that ‘tar’ has addressed (inspired by Joerg Schilling’s > work on star) is to permit ACLs to be restored even if the user database > is out of date. > > This is done by including a fourth field in each ACE with the > numeric user ID. > > I suspect you want to do the same for mtree. I thought > I remembered acl_to_text having an option to use > an extended text format, so it might be a trivial change. It's ACL_TEXT_APPEND_ID, used with acl_to_text_np(3). The other side, acl_from_text(3), already does the right thing when appended IDs are present in the textual form. -- If you cut off my head, what would I say? Me and my head, or me and my body?help
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