diff options
| author | Lennart Poettering <lennart@poettering.net> | 2016-08-25 15:57:21 +0200 |
|---|---|---|
| committer | Djalal Harouni <tixxdz@opendz.org> | 2016-09-25 10:42:18 +0200 |
| commit | 3f815163ff8fdcdbd329680580df36f94e15325d (patch) | |
| tree | 1436ba9f8a74ad8c6f4311764b7591a8283a5c00 /m4 | |
| parent | 160cfdbed3eb23b6bc3c17613685b756f23be4a1 (diff) | |
core: introduce ProtectSystem=strict
Let's tighten our sandbox a bit more: with this change ProtectSystem= gains a
new setting "strict". If set, the entire directory tree of the system is
mounted read-only, but the API file systems /proc, /dev, /sys are excluded
(they may be managed with PrivateDevices= and ProtectKernelTunables=). Also,
/home and /root are excluded as those are left for ProtectHome= to manage.
In this mode, all "real" file systems (i.e. non-API file systems) are mounted
read-only, and specific directories may only be excluded via
ReadWriteDirectories=, thus implementing an effective whitelist instead of
blacklist of writable directories.
While we are at, also add /efi to the list of paths always affected by
ProtectSystem=. This is a follow-up for
b52a109ad38cd37b660ccd5394ff5c171a5e5355 which added /efi as alternative for
/boot. Our namespacing logic should respect that too.
Diffstat (limited to 'm4')
0 files changed, 0 insertions, 0 deletions