On Thu, Jul 30, 2009 at 1:08 PM, Russ Cox<r...@swtch.com> wrote: > On Thu, Jul 30, 2009 at 8:28 AM, Venkatesh Srinivas<m...@acm.jhu.edu> wrote: >> How come you can't TWalk along an open Fid? > > In the original 9P protocol, that didn't make sense, > because walk always updated the fid it was starting from. > If you open a fid and then walk it elsewhere, > is it still open? Is that an implicit close? > And the operation isn't needed by the Plan 9 kernel anyway, > so out it goes. > > In the current 9P protocol, I think it would be fine to > allow a walk to start at an open fid as long as newfid > was being used to create a new fid. This would > make it easy to implement fchdir on Unix. >
it would surely make it easier for unix implementations. i have had plenty of issues with that in o9fs. but as yourself pointed out, what would that walk mean? iru
