jamal <hadi@xxxxxxxxxx> writes: > Added Daniel to the discussion.. > > On Tue, 2010-02-23 at 06:07 -0800, Eric W. Biederman wrote: >> jamal <hadi@xxxxxxxxxx> writes: > >> > Does the point after sys_setns(fd) allow me to do io inside >> > ns <name>? Can i do open() and get a fd from ns <name>? >> >> Yes. My intention is that current->nsproxy->net_ns be changed. >> We can already change it in unshare so this is feasible. > > I like it if it makes it as easy as it sounds;-> With lxc, > i essentially have to create a proxy process inside the > namespace that i use unix domain to open fds inside the ns. > Do i still need that? That point of the mount to hold a persistent reference to the namespace without using a process. The point of the of the to be written set_ns call is to change the default network namespace of the process such that all future open/bind/socket calls happen in the referenced network namespace. The are a few stray places like sysfs where it is the mount point not current->nsproxy->net_ns that will determine what we see. >> > The only problem that i see is events are not as nice. I take it i am >> > going to get something like an inotify when a new namespace is created? >> >> Yes. Inotify would at the very least see that mkdir. You could also >> use poll on /proc/mounts to see the set of mounts change. > > It is not as nice but livable. I suppose attributes of the specific > namespace are retrieved somewhere there as well.. Attributes of the specific namespace? Eric -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
