[add linux-kernel] On Tue, Jan 24, 2017 at 5:38 AM, Andy Lutomirski <[email protected]> wrote: > Here's another one: split up and modernize /proc. > > I'm imagining a whole series of changes: > > - Make a sysctlfs. You could mount it and get all the sysctls if you > have global privilege. If you only have privilege relative to some > namespace, you could pass a mount option like -o scope=net to get just > sysctls that belong to the mounting process' netns. If done > carefully, this should be safe for unprivileged mounting without the > fs_fully_visible() checks. > > - Teach procfs to understand mount options for real (per-superblock). > Shouldn't be that hard. > > - Make it possible to control hidepid per mount. systemd and such > could use this to tighten up daemons. > > - Make it possible to make /proc/PID/cmdline only show argv[0] via > per-mount option or perhaps sysctl. > > - Make it possible to mount a mini-proc that doesn't have all the > non-PID stuff. Presumably it would still have an empty directory > called sys and maybe some other minimal contents for compatibility
Yes, please! mount -t sysctl ... mount -t proc-pid ... mount -t proc-kitchen-sink ...
