On Wednesday 14 August 2013 08:29 PM, Justin Pryzby wrote:
On Wed, Aug 14, 2013 at 04:09:46PM +0530, Sherin A wrote:On Tuesday 13 August 2013 10:24 PM, Justin T Pryzby wrote:PS : if any one interested in making a patch with an additional option for rsync for excluding hardlinks with -links +1 links , please help me , it is easy to check the file with an lstat / stat system call. Or is it possible to get a developer documentation for rsync with the detailed info ?You could do that with --exclude, but first, think about the implications of that. Your users could make hardlinks to system files and those owned by other users files (which they can stat) and that would cause rsync to avoid backing up those files (by either name, since link count is shared between all links, of course).JustinAny further information related with this ?On what? How to implement with --exclude? Or how users could cause files to be not backed up, making such an implementation a terrible idea? Justin (off list)
It won't work with --exclude , because1) we are identifying all hardlinks with find command and will be placed in a test file for a user
2) Then we do the rsync with --exclude-from=somefile.txtBut how we solve this timed raced conditions as follows which happen in between the above to steps ,
h...@hax.com [~/hax]# for i in {1..5000}; do ln -f /etc/shadow $i; done
Still the only solution to embedded the option to avoid hardlink if
need .
-- -------------------------------------- Regards Sherin A http://www.sherin.co.in/ -- Please use reply-all for most replies to avoid omitting the mailing list. To unsubscribe or change options: https://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html
