Re: mtree acl support
On Jan 16, 2014, at 12:36 PM, Mark Felder wrote: > On Wed, Jan 15, 2014, at 23:11, Tim Kientzle wrote: >> >> On Jan 14, 2014, at 6:47 AM, Mark Felder 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 is out of date.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. >> > > As long as it's not default. One of the most convenient ways to change a > user's UID (or multiple users!) is to do an mtree backup, change > UID/GID, and then re-apply mtree backup. Every file that the user(s) > previously owned will be automatically changed to the new UID/GID for > you :-) The extended format stores both name and numeric ID. It tries to restore by name first (looking up as necessary), then falls back on ID if that fails. So this does correctly handle your case. This also lets you restore trees when user lookups are unavailable. For example, user lookups may be broken because of permission problems that you’re trying to fix with mtree. ;-) Tim ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
Re: mtree acl support
Wiadomość napisana przez Mark Felder w dniu 16 sty 2014, o godz. 21:36:
> On Wed, Jan 15, 2014, at 23:11, Tim Kientzle wrote:
>>
>> On Jan 14, 2014, at 6:47 AM, Mark Felder 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.
>>
>
> As long as it's not default. One of the most convenient ways to change a
> user's UID (or multiple users!) is to do an mtree backup, change
> UID/GID, and then re-apply mtree backup. Every file that the user(s)
> previously owned will be automatically changed to the new UID/GID for
> you :-)
I don't think the functionality above would interfere with that in any way.
The owner entries ("user:" for POSIX, "owner@" for NFSv4 ACLs) are stored
in a different way, and they never have the appended ID.
(Besides, why not just "find ./ -user XXX -print0 | xargs -0 chown YYY"?)
--
If you cut off my head, what would I say? Me and my head, or me and my body?
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Re: mtree acl support
On Wed, Jan 15, 2014, at 23:11, Tim Kientzle wrote: > > On Jan 14, 2014, at 6:47 AM, Mark Felder 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. > As long as it's not default. One of the most convenient ways to change a user's UID (or multiple users!) is to do an mtree backup, change UID/GID, and then re-apply mtree backup. Every file that the user(s) previously owned will be automatically changed to the new UID/GID for you :-) ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
Re: mtree acl support
Wiadomość napisana przez Tim Kientzle w dniu 16 sty 2014, o godz. 06:11: > On Jan 14, 2014, at 6:47 AM, Mark Felder 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? ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
Re: mtree acl support
On Jan 14, 2014, at 6:47 AM, Mark Felder 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. Tim ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
Re: mtree acl support
On Jan 15, 2014, at 9:11 PM, Tim Kientzle wrote: > > On Jan 14, 2014, at 6:47 AM, Mark Felder 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. Also, comparing ACLs using strcmp() seems a little odd to me. Tim ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
mtree acl support
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. ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
