Re: [fuse-devel] overlay mount

[jonywalker <jon...@gm...>]

Hi Stef
  Mount dir is /tmp/Dirx since its overlay mount source and destination are
same. 
overlay
  ./myfs /tmp/DirX /tmp/DirX -o nonempty 

 general (  this is working fine )
 
./myfs /tmp/DirX /tmp/Diry                      


In my file system (myfs) before calling fuse_main() i am opening /tmp/Dirx
and storing fd because once overlay mount happens opening /tmp/Dirx will
fail.  So later on using fd i am accessing content of directory (/tmp/Dirx)
using openat calls (relative access). 

hope i made it clear, please give some idea to achieve overlay mount 

thanks
jony 



Stef Bon-3 wrote:
> 
> 2010/10/5 jonywalker <jon...@gm...>:
>>
>> Hi Stef
>>     Thank you for reply. I got little confused. I try to explain flow of
>> my
>> fs. In my fs before calling fuse_main i am opening mount dir
>> gfdir = open("/tmp/Dirx",O_RDONLY);   here gfdir is global.
>>
>> and in opendir
>>
>>  Dir *dp = fdopendir(gfdir);
>>
>>  closedir call i commented, since closedir will close dp and underlying
>> fd.
>>
>> creating local defined fd !? since its overlay mount before calling
>> fuse_main only, we need to open dir and using that fd later we can access
>> mountdir. if we try to open after fuse main opendir will fail. Even i
>> tried
>> storing this fd in fuse data, still same problem.
>>
>> When i looked into my logfile fs call flow is like
>> opendir
>> readdir
>> getattr
>> releasedir (close dir call is commented )
> 
> Don't do this. I'm not sure what happens.
> 
> What do you mean with:
> 
> my fs before calling fuse_main i am opening mount dir
> gfdir = open("/tmp/Dirx",O_RDONLY)
> 
> What is the mount dir??
> 
> Stef
> 
> ------------------------------------------------------------------------------
> Beautiful is writing same markup. Internet Explorer 9 supports
> standards for HTML5, CSS3, SVG 1.1,  ECMAScript5, and DOM L2 & L3.
> Spend less time writing and  rewriting code and more time creating great
> experiences on the web. Be a part of the beta today.
> http://p.sf.net/sfu/beautyoftheweb
> _______________________________________________
> fuse-devel mailing list
> fus...@li...
> https://lists.sourceforge.net/lists/listinfo/fuse-devel
> 
> 

-- 
View this message in context: http://old.nabble.com/overlay-mount-tp29845101p29886496.html
Sent from the Fuse - Dev mailing list archive at Nabble.com.