Mail Archives: cygwin/2006/08/07/15:55:26
Matt, Thank, but I'd rather determine a way to preserve the perms by
using some type of ACL\UID exchange. That way I don't have to doctor up
all the perms again if I have to restore from a backup. It seems that
root\administrator have been mapped, hence the reason I can read root
owned files.
Thanks,
Jimmy
mwoehlke wrote:
> Jimmy McMillan wrote:
>> I've had this problem for some time now, and just getting around to
>> doing something about it. I'll keep the description as brief as
>> possible.
>>
>> I'm rsyncing from a linux server to a Windows XP machine's firewire
>> drive via SSH\cygwin\rsync. The linux server pushs with the
>> following command.
>>
>> /usr/local/bin/rsync -e ssh --recursive --verbose --delete --force
>> --update /mnt/hd/mail_store/
>> jackcorn AT 192 DOT 168 DOT 66 DOT 99:/cygdrive/i/backups/webs_data/
>>
>> 192.168.66.99 == My Workstation. (Windows XP + Cygwin)
>> /cygdrive/i == 250GB firewire drive on my workstation. (NTFS)
>> jackcorn == a Local user on my workstation. (Didn't want to bother
>> with a domain account)
>>
>> it appears that any file owned by root once on it's NTFS filesystem
>> after the backup can be opened successfully. However any file owned
>> by vpopmail:vchkpw cannot be opened.
>> -rw-r--r-- 1 root root 167851 2005-10-04 15:33 byebye.sh
>> -rwx--x--x 1 vpopmail vchkpw 55996 2005-06-28 14:44 clearopensmtp*
>> (In this case I can open byebye.sh on the firewire drive after the
>> backup, but not the clearopensmtp)
>>
>> The only way I can access those files are to "Replace permission
>> entries on all child....yatta yatta" under the Advanced Security
>> Settings under windows. However there are a couple hundred thousand
>> files in there and that can take some time.
>>
>> I've tried with the -g -o -p options with rsync and I've also tried
>> using CYGWIN=nontsec or CYGWIN=ntsec under the windows Enviro
>> Variables, with no luck.
>>
>> Is there anyway I can map the vpopmail user to a windows local user?
>> Or does anyone know what else to do?
>
> Well, first off, you don't have permission to read that file unless
> you are "vpopmail" (notice that only the owner has read permission?).
> Thus, you need to change the permissions to allow you to read it.
>
> Brute force solution #1 (assuming you can chown):
> find . -user vpopmail -print0 | xargs -0 chown Administrator
>
> Brute force solution #2 (assuming you can chmod):
> chown -R a+r .
>
> Both of those should be done on the backups ONLY - which would mean in
> Cygwin - as changing permissions on the computer using the files is a
> potential security risk (well, it's that on the backups, too, but I
> assume you feel comfortable with whatever safeguards you have against
> your backup drive being hacked into) and might cause programs to
> malfunction.
>
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