update TODO

TODO

@@ -12,9 +12,6 @@ Bugfixes:
           Environment=ONE='one' "TWO='two two' too" THREE=
           ExecStart=/bin/python3 -c 'import sys;print(sys.argv)' $ONE $TWO $THREE
 
-* When systemctl --host is used, underlying ssh connection can remain open.
-  bus_close does not kill children?
-
 External:
 
 * Fedora: add an rpmlint check that verifies that all unit files in the RPM are listed in %systemd_post macros.
@@ -34,6 +31,38 @@ Features:
 * replace all canonicalize_file_name() invocations by chase_symlinks(), in
   particulr those where a rootdir is relevant.
 
+* maybe introduce gpt auto discovery for /var/tmp?
+
+* set ProtectSystem=strict for all our usual services.
+
+* maybe add gpt-partition-based user management: each user gets his own
+  LUKS-encrypted GPT partition with a new GPT type. A small nss module
+  enumerates users via udev partition enumeration. UIDs are assigned in a fixed
+  way: the partition index is added as offset to some fixed base uid. User name
+  is stored in GPT partition name. A PAM module authenticates the user via the
+  LUKS partition password. Benefits: strong per-user security, compatibility
+  with stateless/read-only/verity-enabled root. (other idea: do this based on
+  loopback files in /home, without GPT involvement)
+
+* gpt-auto logic: introduce support for discovering /var matching an image. For
+  that, use a partition type UUID that is hashed from the OS name (as encoded
+  in /etc/os-release), the architecture, and 4 new bits from the gpt flags
+  field of the root partition. This way can easily support multiple OS
+  installations on the same GPT partition table, without problems with
+  unmatched /var partitions.
+
+* gpt-auto logic: related to the above, maybe support a "secondary" root
+  partition, that is mounted to / and is writable, and where the actual root's
+  /usr is mounted into.
+
+* add dm-verity boots, and in nspawn (libcryptsetup knows this, should be relatively straight-forward)
+
+* machined: add apis to query /etc/machine-info data of a container
+
+* .mount and .swap units: add Format=yes|no option that formats the partition before mounting/enabling it, implicitly
+
+* gpt-auto logic: support encrypted swap, add kernel cmdline option to force it, and honour a gpt bit about it, plus maybe a configuration file
+
 * drop nss-myhostname in favour of nss-resolve?
 
 * drop internal dlopen() based nss-dns fallback in nss-resolve, and rely on the
@@ -279,8 +308,6 @@ Features:
 * For timer units: add some mechanisms so that timer units that trigger immediately on boot do not have the services
   they run added to the initial transaction and thus confuse Type=idle.
 
-* Run most system services with cgroupfs read-only and procfs with a more secure mode (doesn't work, since the hidepid= option is per-pid-namespace, not per-mount)
-
 * add bus api to query unit file's X fields.
 
 * gpt-auto-generator: