su failed to chdir with NFS mounted home dir

[Luigi Rizzo]

On Sat, Sep 23, 2006 at 01:00:21AM +0000, Luoqi Chen wrote:
> Hi,
> 
> I've encountered a problem with su on NFS mounted home dir. In revision
> 1.68 of su.c, the code was rearranged to chdir before new uid was set,
> this chdir would fail if local root doesn't have permission to enter
> the target user's home dir. This is exactly the case when you have a NFS
> mounted home dir with 0750 permission while root is mapped to nobody on NFS.

interesting, i was seeing problems with suid binaries (e.g. mtools)
being unable to write on NFS-mounted directories on 6.1 -- this was on
a lab with diskless machines.

Could it be due to similar reasons ?

	cheers
	luigi

> Is there an owner for su.c? I'd like to modify it to delay this chdir to
> after the new uid is set.
> 
> Thanks
> -lq
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