IBM blew it (again) MOUNT-POINT BUG

[Petri Helenius]

  I noticed last friday a nice 'little' feature in AIX 3.1 rev 3003:
Have a mount point directory with permissions like this:
drwx------ owned by root
then mount a filesystem (JFS) with root directory permissions as normal:
drwxr-xr-x
Then take a normal user, (anyone non-root will suffice) and cd to
the mounted directory. Then try pwd or du without arguments. (remember
that ksh has an internal pwd, so you must use /bin/pwd instead.) they
all claim that they cannot find current directory. Ls will complain
about file .. non-accessable. The the fs is unmounted and mount point
directory chmoded to 755 and the fs remounted everything works fine.
.. seems that the IBM guys missed some pages from the "Design of the Unix OS"
book...
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 Petri Helenius, Fimeko-Data Oy 
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