Right now, if you're already in a session and call CreateSession, we
return information about the current session of yours. This is highy
confusing and a nasty hack. Avoid that, and instead return a commonly
known error, so the caller can detect that.
This has the side-effect, that we no longer override XDG_VTNR and XDG_SEAT
in pam_systemd, if you're already in a session. But this sounds like the
right thing to do, anyway.
Old gdm and lightdm start the user-session during login before they
destroy the greeter-session. Therefore, the user-session will take over
the VT from the greeter. We recently prevented this by never allowing
multiple sessions on the same VT. Fix this now, by explicitly allowing
this if the owning session is a GREETER.
Note that gdm no longer behaves like this. Instead, due to wayland, they
always use a different VT for each session. All other login-managers are
highly encouraged to destroy the greeter-session _before_ starting the
user-session. We now work around this, but this will probably not last
forever (and will already have nasty side-effects on the greeter-session).
- Make sure that the IPv6PrivacyExtensions=yes results in
prefer-temporary, not prefer-public.
- Introduce special enum value "kernel" to leave setting unset, similar
how we have it for the IP forwarding settings.
- Bring the enum values in sync with the the strings we parse for them,
to the level this makes sense (specifically, rename "disabled" to
"no", and "prefer-temporary" to "yes").
- Make sure we really set the value to to "no" by default, the way it is
already documented in the man page.
- Fix whitespace error.
- Make sure link_ipv6_privacy_extensions() actually returns the correct
enum type, rather than implicitly casting it to "bool".
- properly size formatting buffer for ipv6 sysctl value
- Don't complain if /proc/sys isn't writable
- Document that the enum follows the kernel's own values (0 = off, 1 =
prefer-public, 2 = prefer-temporary)
- Drop redundant negating of error code passed to log_syntax()
- Manpage fixes
This fixes a number of issues from PR #417
Right now, we never install destination matches on kdbus as the kernel did
not support MATCH rules on those. With the introduction of
KDBUS_ITEM_DST_ID we can now match on destination IDs, so add explicit
support for those.
This requires a recent kdbus module to work. However, there seems to be no
user-space that uses "Destination=''" matches, yet, so old kdbus modules
still work fine (we couldn't find any real user).
This is needed to match on unicast signals in bus-proxy. A followup will
add support for this.
There is logic to determine the UID shift from the file-system, rather
than having it be explicitly passed in.
However, this needs to happen in the child process that sets up the
mounts, as what's important is the UID of the mounted root, rather than
the mount-point.
Setting up the UID map needs to happen in the parent becuase the inner
child needs to have been started, and the outer child is no longer able
to access the uid_map file, since it lost access to it when setting up
the mounts for the inner child.
So we need to communicate the uid shift back out, along with the PID of
the inner child process.
Failing to communicate this means that the invalid UID shift, which is
the value used to specify "this needs to be determined from the file
system" is left invalid, so setting up the user namespace's UID shift
fails.
1) never bother with setting the flag for loopback devices
2) if we fail to write the flag due to EROFS (which is likely to happen
in containers where /proc/sys is read-only) or any other error, check
if the flag already has the right value. If so, don't complain.
Closes#469
Just like we conditionalize loading kdbus.ko, we should conditionalize
mounting kdbusfs. Otherwise, we might run with kdbus if it is builtin,
even though the user didn't want this.
This patch add support for ipv6 privacy extensions.
The variable /proc/sys/net/ipv6/conf/<if>/use_tempaddr
can be changed via the boolean
IPv6PrivacyExtensions=[yes/no/prefer-temporary]
When true enables privacy extensions, but prefer public addresses over
temporary addresses.
prefer-temporary prefers temporary adresses over public addresses.
Defaults to false.
[Match]
Name=enp0s25
[Network]
IPv6PrivacyExtensions=prefer-temporary
We refer to the same sysctl-setting twice, which is misleading. Correctly
list all global forwarding options. As we _always_ change the forwarding
setting on links, they will get disabled by default. The global sysctl
defaults thus will not have any effect.
Lennart Poettering
Tom Gundersen
Daniel Mack
Daniel Mack
Kay Sievers
David Herrmann
Marcel Holtmann
Zbigniew Jędrzejewski-Szmek
Thomas Hindoe Paaboel Andersen
Richard Maw
Torstein Husebø
Susant Sahani
Miguel Bernal Marin