Re: FreeBSD process substitution bug

[Steve Atwell <satwell@xxxxxxxxxxxx>]

On Sat, Oct 29, 2005 at 11:02:26AM +0100, Peter Stephenson wrote:
> Steve Atwell wrote:
> > % cat <(date)
> > cat: /dev/fd/11: No such file or directory
> >
> > This happens to me on FreeBSD 5.4 with zsh 4.2.5 built with default 
> > configure options.
>
> That suggests there's something wrong with the following configure test:
> any idea what?  You should find it works if you #undef PATH_DEV_FD in
> config.h.

I did a little more investigation and found the problem.  FreeBSD 5.x by 
default only provides file descriptors 0, 1, and 2 for the current 
process in /dev/fd.  If you want to be able to access other file 
descriptors, you have to mount the special fdescfs filesystem on 
/dev/fd.  The configure test to see if zsh can use /dev/fd succeeds 
because it only tests /dev/fd/0.

--
Steve Atwell <satwell@xxxxxxxxxxxx>