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The function dns_server_limited_domains() was very strange as it
enumerate the domains associated with a DnsScope object to determine
whether any "route-only" domains, but did so as a function associated
with a DnsServer object.
Let's clear this up, and replace it by a function associated with a
DnsScope instead. This makes more sense philosphically and allows us to
reduce the loops through which we need to jump to determine whether a
scope is suitable for default routing a bit.
Previously, we'd return DNS_SCOPE_MAYBE for all domain lookups matching
LLMNR or mDNS. Let's upgrade this to DNS_SCOPE_YES, to make the binding
stronger.
The effect of this is that even if "local" is defined as routing domain
on some iface, we'll still lookup domains in local via mDNS — if mDNS is
turned on. This should not be limiting, as people who don't want such
lookups should turn off mDNS altogether, as it is useless if nothing is
routed to it.
This also has the nice benefit that mDNS/LLMR continue to work if people
use "~." as routing domain on some interface.
Similar for LLMNR and single label names.
Similar also for the link local IPv4 and IPv6 reverse lookups.
Fixes: #10125
I looked over the diff, and it seems it's only additions and fixes, no removals.
The diff for the source files is much bigger, but it seems that the sorting
code is working well.
The function to replacement paths into the configuration file list was borked.
Apart from the crash with empty root prefix, it would incorrectly handle the
case where root *was* set, and the replacement file was supposed to override
an existing file.
prefix_root is used instead of path_join because prefix_root removes duplicate
slashes (when --root=dir/ is used).
A test is added.
Fixes#11124.
Generators run in a context where waiting for udev is not an option,
simply because it's not running there yet. Hence, let's not wait for it
in this case.
This is generally OK to do as we are operating on the root disk only
here, which should have been probed already by the time we come this
far.
An alternative fix might be to remove the udev dependency from image
dissection again in the long run (and thus replace reliance on
/dev/block/x:y somehow with something else).
Fixes: #11205
This reverts commit 89f9752ea0.
This patch causes various problems during boot, where a "mount storm" occurs
naturally. Current approach is flakey, and it seems very risky to push a
feature like this which impacts boot right before a release. So let's revert
for now, and consider a more robust solution after later.
Fixes#11209.
> https://github.com/systemd/systemd/pull/11196#issuecomment-448523186:
"Reverting 89f9752ea0 and fcfb1f775e fixes this test."
The starting of mount units requires that changes to
/proc/self/mountinfo be processed before the SIGCHILD from the
completion of /sbin/mount is processed, as described by the comment
/* Note that due to the io event priority logic, we can be sure the new mountinfo is loaded
* before we process the SIGCHLD for the mount command. */
The recently-added mount-storm protection can defeat this as it
will sometimes deliberately delay processing of /proc/self/mountinfo.
So we need to disable mount-storm protection when a mount unit is starting.
We do this by keeping a counter of the number of pending
mounts, and disabling the protection when this is non-zero.
Thanks to @asavah for finding and reporting this problem.
Apparently this originated in PHP, so the json output could be directly
embedded in HTML script tags.
See https://stackoverflow.com/questions/1580647/json-why-are-forward-slashes-escaped.
Since the output of our tools is not intended directly for web page generation,
let's not do this unescaping. If needed, the consumer can always do escaping as
appropriate for the target format.
read_line() is a lot more careful and optimized than read_nul_string()
but does mostly the same thing. let's replace the latter by the former,
just with a special flag that toggles between the slightly different EOL
rules if both.
This ensures that the read/write state of the root mount matches the
read/write flag in the GPT partition table entry.
This is only used as fallback in case no ro/rw flag is specified on the
kernel cmdline, and there's no entry for the root partition in
/etc/fstab.
This is missing functionality of the GPT auto logic, as without this the
root partition was always mounted read-only — when booting with zero
configuration in /etc/fstab and /proc/cmdline —, as we defaulted to
read-only behaviour for all mounts. Moreover we honoured the r/o flag in
the partition table for all other partition types, except for the root
partition.
