undefined method `backtrace' for nil:NilClass about rfusefs HOT 5 CLOSED

Hello, still encountering the issue.
Ruby 2.3.1, rfusefs 1.0.3

When I try to use File.read in read_file to return requested file, I get it content, but with the error

ERROR: Exception nil not an Errno:: !respond_to?(:errno)
ERROR: Exception in exception!
ERROR: Exception #<NoMethodError: undefined method backtrace' for nil:NilClass> not an Errno:: !respond_to?(:errno) /home/mobil/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rfuse-1.1.2/lib/rfuse.rb:333:in process'
/home/mobil/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rfuse-1.1.2/lib/rfuse.rb:333:in loop' /home/mobil/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rfuse-1.1.2/lib/rfuse.rb:293:in run'
/home/mobil/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rfusefs-1.0.3/lib/fuse/rfusefs-fuse.rb:104:in run' /home/mobil/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rfuse-1.1.2/lib/rfuse.rb:244:in main'
/home/mobil/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rfusefs-1.0.3/lib/rfusefs.rb:48:in `main'
/home/mobil/scripts/ruby/test/megafs/mega.rb:96:in <main>

Can I do some monkey patching to resolve it locally?

from rfusefs.

What version of rfuse_ng are you using? As far as I know there is no version that works correctly on ruby 1.9

from rfusefs.

I have the latest version of the gem installed.

I found out that this error occurs everytime read_file is executed and I return a files data via File.read, what causes the FUSE to assume the file does not exist. To avoid this error I just return the file name and the error disappears.

Still I have an error telling me "There is no such method length for nil object in rfusefs process() method"
I cannot reproduce the exact error message right now. Sorry for that.
But I think it happens when the file manager trys to read a big folder.

Do you have a clue to fix rfuse_ng for 1.9.3? I thought rfuse_ng was a fork to accomplish 1.9 compatibility?
Unfortunately I don´t know enough about fuse and c extensions to have a quick fix.

from rfusefs.

I think I found this (while documenting rfuse).

Error occurs when getattr returns nil, and possibly for other methods calling rfuse return_error() function without an exception having been thrown. I'm going to do a new release of rfuse (and then rfusefs) which should fix this.

from rfusefs.

I'm late to this party but maybe this will help some future traveller: the vanilla rfuse gem (to which rfusefs is related) throws the same error if, for example, the implementation of #read mistakenly returns more data than was requested by the caller. See the size parameter:

read(ctx, path, size, offset, ffi)

from rfusefs.