Quoth Chris McGee <[email protected]>: > Hi All, > > I was thinking about file descriptors in the context of Plan 9. On Unix an > fd is generally only usable by the current process, and child ones through > a fork with some special incantation if one wants to communicate one over a > domain socket. This is possibly for security reasons, avoiding other users' > processes from trying to guess the fd of a critical file. > > It's common practice in Plan 9 to post an fd (sometimes via a pipe) from > one process to the /srv filesystem so that others can discover it and open > a comms channel. Does the kernel transform the fd into something when > posted to /srv so that it can be consumed by any other process in the > system? > > Thanks, > Chris >
it's all just Chans in the kernel; devsrv just provides a way of giving an open chan a name in the namespace. ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/Tfaa2554a9b74c479-Mfaf45bf1e56e90cf94f97cb8 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription
