On Mar 14, 6:49pm, net...@izyk.ru (Ilya Zykov) wrote: -- Subject: Re: Enhance ptyfs to handle multiple instances.
| > We first need to decide if disclosing gaps in the pty number is a security | > issue. If not, it is simple; we just allocate the next free one and we don't | > care about gaps. I.e. first mount can grab 0,1,2,3,5,6 second mount can grab | > 4,7,8 etc. | | It introduces limits. How so? | > I think that this is not very desirable because it again introduces limits | > to the number of ptys per mountpoint. | | I don't understand how? if the first mount can only have [0..n-1] the second [n...2*n] etc... | Ok. | One remark: mount one instance more than one time useless, because, which mount point must return TIOCPTMGET in this case? | Maybe I don't understand fully NetBSD pty layer realization yet. If they point to the same device and they are both reachable, it does not matter. If you are inside a chroot, then a reachable one within the root. christos
