[Bug 8020] New: --acls does not honor --numeric-ids if UIDs do not match

[samba-bugs at samba.org]

https://bugzilla.samba.org/show_bug.cgi?id=8020

           Summary: --acls does not honor --numeric-ids if UIDs do not
                    match
           Product: rsync
           Version: 3.0.7
          Platform: x86
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P5
         Component: core
        AssignedTo: wayned at samba.org
        ReportedBy: rsync at sanitarium.net
         QAContact: rsync-qa at samba.org


If the same user name exists on two systems but with different numeric UIDs
rsync normally does a translation.  Using --numeric-ids is supposed to disable
that translation feature (which it does for file ownership).  However, it does
not for ACLs.

Here is an example of an directory with an ACL transferred between 2 systems
that have a qmaild user with different UIDs.

---------------------------------------------------------------

localbox# rsync --archive --acls --itemize-changes --numeric-ids
remotebox:/service ./
.d.......a. service/
localbox# ssh remotebox getfacl /service
getfacl: Removing leading '/' from absolute path names
# file: service
# owner: root
# group: service
user::rwx
user:nagios:r-x
user:qmaild:r-x
user:nobody:r-x
group::r-x
mask::r-x
other::---

localbox# ssh remotebox id qmaild
uid=380(qmaild) gid=200(nofiles) groups=200(nofiles),300(service)
localbox# getfacl service
# file: service
# owner: root
# group: 300
user::rwx
user:qmaild:r-x
user:320:r-x
user:nobody:r-x
group::r-x
mask::r-x
other::---

localbox# id qmaild
uid=201(qmaild) gid=200(nofiles) groups=200(nofiles)

------------------------------------------------------------

Both systems are running Gentoo Linux and rsync 3.0.7.  I discovered this
problem because I was using rsync to backup the server with the ACL to a backup
system that also had the qmaild user but with a different UID.  When I later
restored that backup while booted from a live CD (SystemRescueCD) it did not
have a qmaild user so the numeric value from my backup server was used rather
than the numeric value it was supposed to be.

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