File contents end at NULL bytes

[Cytrian]

rfuse-1.0.3
ruby 1.8.7 (2010-08-16 patchlevel 302) [x86_64-linux] on debian squeeze

I'm currently trying to implement a fuse-filesystem in ruby and stubled upon your fine gem.
It work's find most of the time but fails on the file-read-operation, if the contents of the file
contains NULL bytes:

def read(ctx,path,size,offset,fi)
s=IO.read("/tmp/temp.tar",size,offset)
return s
end

The contents end at the first NULL byte. What I wanted to do is some virtual, read/only fs which simulates
TAR archives for subdirectories.

Can you help me?

[lwoggardner]

This spec passes on both 1.8.7 (p302 and p358) and 1.9.3

      it "should read over null characters in a real file" do
           file_stat.size = 12
           File.open("/tmp/nulltest","w") { |f| f.print "hello\000world\000" }

           mockfs.stub(:getattr).with(anything(),"/testnull").and_return(file_stat)

           mockfs.stub(:read) { |ctx,path,size,offset,ffi|
               IO.read("/tmp/nulltest",size,offset)
           }

           with_fuse(mountpoint,mockfs) do
               File.open("#{mountpoint}/testnull") do |f|
                   val = f.gets
                   val.should == "hello\000world\000"
                   val.size.should == 12
                   puts val
               end
           end
       end

[lwoggardner]

so next steps will be some more debugging.

Are you running your fs via RFuse::FuseDelegator? - if so you can run ruby with -debug (or just set $DEBUG = true somewhere). This will output to $stderr the rfuse methods and arguments as they are called.

If you are subclassing RFuse::Fuse directly then I suggest refactoring to use FuseDelegator :-)

Also passing the mount option "-odebug" will cause the Fuse library itself to output debugging statements

If you could do that and attach the output somewhere that will help.

[lwoggardner]

Assume issue is resolved as invalid.