IRC, freenode, #hurd, 2009-08-25

dir lookup.

<cfhammar> also I fixed (what I think is) a bug in
  hurd_file_name_lookup_retry when opening FDs with FS_RETRY_MAGICAL
<cfhammar> it didn't actually reopen the FD, rather it just (effectively)
  duped it
<scolobb> cfhammar: That's great!  I think I had some problems because of
  not being able to truly reopen a port to a file.
<antrik> cfhammar: what is the difference, and why do you consider it a
<cfhammar> antrik: for one thing you can't change open modes, and it
  doesn't reset the file cursor
<cfhammar> (which I actually needed, though I could have done it manually)
<cfhammar> antrik: and also it isn't consistant with linux
<cfhammar> you can trigger the bug from the shell: cat /dev/fd/3 3>>
<antrik> cfhammar: I can't say that I understand the test case... but I can
  at least confirm that it behaves differently on Hurd and on Linux :-)



$ cat /dev/fd/3 3>> /tmp/foo
$ ls -l /tmp/foo 
-rw-rw-r-- 1 thomas thomas 0 Feb 17 12:01 /tmp/foo


$ cat /dev/fd/3 3>> /tmp/foo
cat: /dev/fd/3: Bad file descriptor