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This makes the ask-password agent handling more alike the polkit agent
handling again, and introduces ask_password_agent_open_if_enabled() that
works just like the already existing polkit_agent_open_if_enabled().
The commit:
a3fc6b55ac nspawn: mask out CAP_NET_ADMIN again if settings file turns off private networking
turned off the CAP_NET_ADMIN capability whenever no private networking
feature was enabled. This broke configurations where the CAP_NET_ADMIN
capability was explicitly requested in the configuration.
Changing the order of evalution here to allow the Capability= setting
to overrule this implicit setting:
Order of evaluation:
1. if no private network setting is enabled, CAP_NET_ADMIN is removed
2. if a private network setting is enabled, CAP_NET_ADMIN is added
3. the settings of Capability= are added
4. the settings of DropCapability= are removed
This allows the fix for #11755 to be retained and to still allow the
admin to specify CAP_NET_ADMIN as additional capability.
Fixes: a3fc6b55acFixes: #13995
We set ProtectKernelLogs=yes on all long running services except for
udevd, since it accesses /dev/kmsg, and journald, since it calls syslog
and accesses /dev/kmsg.
If we fail to start polkit, we get a message like
"org.freedesktop.DBus.Error.NameHasNoOwner: Could not activate remote peer.",
which has no meaning for the caller of our StartUnit method. Let's just
return -EACCES.
$ systemctl start apache
Failed to start apache.service: Could not activate remote peer. (before)
Failed to start apache.service: Access denied (after)
Fixes#13865.
We would only write to the field, and take the address. All *readers* were
removed in 2841493927. (The explanation for why
the field wasn't removed back then is that the patch underwent a few iterations,
with the initial version adding translation back and forth. Later versions of
the patch simply emit a warning and ignore the old value. Apparently nobody
noticed that the value became unused.)
We allow expressing configuration as a fraction with granularity of 0.001, but
when writing out the unit file, we'd round that up to 0.01.
Longer term, I think it'd be nicer to simply use floats and do away with
arbitrary restrictions on precision.
TasksMax= and DefaultTasksMax= can be specified as percentages. We don't
actually document of what the percentage is relative to, but the implementation
uses the smallest of /proc/sys/kernel/pid_max, /proc/sys/kernel/threads-max,
and /sys/fs/cgroup/pids.max (when present). When the value is a percentage,
we immediately convert it to an absolute value. If the limit later changes
(which can happen e.g. when systemd-sysctl runs), the absolute value becomes
outdated.
So let's store either the percentage or absolute value, whatever was specified,
and only convert to an absolute value when the value is used. For example, when
starting a unit, the absolute value will be calculated when the cgroup for
the unit is created.
Fixes#13419.
We currently use the host's kernel and initramfs in our QEMU tests.
If the host is running on an encrypted LUKS partition, then the initramfs
will have a crypttab setup looking for the particular root disk it needs to
encrypt before booting into the system.
However, this disk obviously doesn't exist in our QEMU VM, so it turns out
our tests end up waiting for this device to become available, which will
never actually happen, and boot hangs for 90s until that service times out.
[*** ] A start job is running for /dev/disk/by-uuid/01234567-abcd-1234-abcd-0123456789ab (20s / 1min 30s)
In order to prevent this issue, let's pass "rd.luks=0" to disable LUKS in
the initramfs only as part of our default kernel command-line in our QEMU
tests.
This is enough to disable this behavior and prevent the timeout, while at
the same time doesn't conflict with our tests that actually check for LUKS
behavior in the systemd running under test (such as TEST-02-CRYPTSETUP).
Tested: `sudo make -C TEST-02-CRYPTSETUP/ clean setup run`
DNSOverTLS in strict mode (value yes) does check the server, as it is said in
the first few lines of the option documentation. The check is not performed in
"opportunistic" mode, however, as that is allowed by RFC 7858, section "4.1.
Opportunistic Privacy Profile".
> With such a discovered DNS server, the client might or might not validate the
> resolver. These choices maximize availability and performance, but they leave
> the client vulnerable to on-path attacks that remove privacy.
This partially reverts db11487d10 (the logic to
calculate the correct value is removed, we always use the same setting as for
the system manager). Distributions have an easy mechanism to override this if
they wish.
I think making this configurable is better, because different distros clearly
want different defaults here, and making this configurable is nice and clean.
If we don't make it configurable, distros which either have to carry patches,
or what would be worse, rely on some other configuration mechanism, like
/etc/profile. Those other solutions do not apply everywhere (they usually
require the shell to be used at some point), so it is better if we provide
a nice way to override the default.
Fixes #13469.
systemd-analyze verify command now results in segmentation fault if two
consecutive non-existent unit file names are given:
# ./build/systemd-analyze a.service b.service
...<snip irrelevant part>...
Unit a.service not found.
Unit b.service not found.
Segmentation fault (core dumped)
The cause of this is a wrong handling of return value of
manager_load_startable_unit_or_warn() in verify_units() in failure case.
It looks that the current logic wants to assign the first error status
throughout verify_units() into variable r and count up variable count only when
a given unit file exists.
However, due to the wrong handling of the return value of
manager_load_startable_unit_or_warn() in verify_units(), the variable count is
unexpectedly incremented even when there is no such unit file because the
variable r already contains non-zero value in the 2nd failure, set by the 1st
failure, and then the condition k < 0 && r == 0 evaluates to false.
This commit fixes the wrong handling of return value of
manager_load_startable_unit_or_warn() in verify_units().
I added a fairly vague entry to docs/ENVIRONMENT because I think it is worth
mentioning there (in case someone is looking for any environment variable that
might be relevant).
Initially I thought this is a good idea, but when reviewing a different PR
(https://github.com/systemd/systemd/pull/13862#discussion_r340604313) I changed
my mind about this. At some point we probably should start warning about the
old option name, and yet later remove it. But it'll make it easier for people
to transition to the new option name if there's a period of support for both
names without any fuss. There's nothing particularly wrong about the old name,
and there is no support cost.
Fixes#13919 (by avoiding the issue completely).
