trying to figure out why Plack temporary files were being put into the wrong directory

On recent linux system you can find out the original location of the deleted file by examining /proc: 

qwurx [shmem] ~> perl
open $fh, "+>", undef or die "Can't create anonymous storage: $!";
$file = "/proc/$$/fd/" . fileno $fh;
print "$file => ", readlink( $file ), $/;
__END__
/proc/26628/fd/3 => /tmp/PerlIO_eVAtFg (deleted)

[download]

On systems which lack /proc/$$/fd it can be quite annoying to find out, specially when the file system is full and a process is just sitting around in IOWAIT. In this condition there's a difference between disk usage of device and file system. Found that on an old Solaris server running a program which employed this trick: create file, get handle, unlink. Took me some time to find out.

perl -le'print map{pack c,($-++?1:13)+ord}split//,ESEL'

In reply to Re^4: Is there a way to open a memory file with binmode :raw? (open undef) by shmem
in thread Is there a way to open a memory file with binmode :raw? by stevieb

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