Thanks all for the explanations. I think I understand better now. Chris
> On Oct 4, 2023, at 12:06 PM, o...@eigenstate.org wrote: > > Quoth Chris McGee <newton...@gmail.com>: >> 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-M5fd43d2e15b927fd76e19b2b Delivery options: https://9fans.topicbox.com/groups/9fans/subscription
