[Libguestfs] [PATCH 0/9] FOR DISCUSSION ONLY: daemon error handling

[Richard W.M. Jones]

The more I look at this patch, the less I like it.  I would summarise
why I think it's wrong here, but it's better if you look at the
message I posted on the gnulib mailing list here first:

http://lists.gnu.org/archive/html/bug-gnulib/2009-11/msg00434.html

Directly accessing errno on Windows is wrong: you won't see the true
reasons for an error by doing that.  However depending on what the
call is and whether it was replaced by gnulib, the alternatives are a
lot more complicated.

This patch series attempts to Do The Right Thing with gnulib code as
it stands at the moment (assuming my understanding of gnulib error
handling is correct -- see above link).

I feel however that it's probably better to change gnulib error
handling to be more rational.

There's also an additional complication I discovered: MinGW error
values are often wrong.  So that's a MinGW bug to take to the nice
upstream folks on the MinGW project.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
libguestfs lets you edit virtual machines.  Supports shell scripting,
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See what it can do: http://et.redhat.com/~rjones/libguestfs/recipes.html