Package: posh
Severity: wishlist
Currently posh creates heredocs in the filesystem. This means that
heredoc contents will unnecessarily touch the disks, and it also means
dealing with risky juggling of tempfile names.
It would be nicer, on platforms that support it, if posh could use
memfd_create(2) for its heredocs.
this appears to be done in the herein() function in exec.c.
that code currently opens the same filename twice, once read-only, and
then closes the read/write file descriptor.
if posh uses memfd_create, it will get the file descriptor in read-write
mode. once done writing, it should probably seek() back to offset 0,
and somehow convert it to read-only (i don't know how to do that) before
returning the file descriptor directly.
--dkg
