[BUG][LIBC] getcwd gives up too easily

[Ognyan Kulev]

Hi,

getcwd constructs pathname by dir_lookup("..").  When root of translated 
file system is found, dir_readdir is run for the directory that contains 
the translator.  For each directory entry, dir_lookup is called in order 
to find the translated node.

The problem is that if dir_lookup fails for some reason, the readdir 
loop stops and the whole function fails.  Imagine we have directories 
/cdrom and /test, /test is after /cdrom in directory, both has 
translators attached and /cdrom translator dies (e.g., because there is 
no cdrom).  This means that all calls of getcwd inside /test will fail!

If someone else doesn't do it, I'll provide tested patch next week.

Regards,
ogi

PS Compiling glibc makes me sick.  I dream for fixing the Hurd, which 
compiles for only an hour.