Let's synthesize DNS RRs for leases handed out by our DHCP server. This
way local VMs can have resolvable hostnames locally.
This does not implement reverse look ups for now. We can add this
later in similar fashion.
This adds a new `Hostname=` option to the [DHCPServerStaticLease]
section in .network files, allowing an administrator to assign a
specific hostname to a client receiving a static lease.
We automatically select the correct DHCP option to use based on the
format of the provided string:
- Single DNS labels are sent as Option 12.
- Names with multiple DNS labels are sent as Option 81 in wire format.
Fixes: #39634
Both `list` and `status` with `--json=pretty|short` show the description.
It is fetched via D-Bus by org.freedesktop.network1.Manager.Describe
This change exposes the same data via Varlink API `io.systemd.Network.Describe`
and migrates networkctl list and status commands to use Varlink API.
Update GetStates IDL to use enums for link states.
The io.systemd.Resolve.Monitor.DNSConfiguration type is being expanded,
but we do not need the extra information for determining online status.
Ignore these fields when dispatching JSON to avoid "Unrecognized object field"
messages adding noise to systemd-networkd-wait-online debug output.
All other cases, settings on different interfaces are completely
independent. But IPMasquerade=yes on an interface enables the global
IPv6Forwarding= setting, and hence affects other interfaces.
Let's log about that.
Prompted by https://github.com/systemd/systemd/issues/39304#issuecomment-3430382233.
- use dns_name_parent(),
- only ignore errors when the current hostname does not have domain
part, but make other errors like ENOMEM critical.
Follow-ups for 3eb7b881bd.
- Make sure forward headers have the iwyu pragma to always keep them
- Make sure we always include the daemon specific forward header
instead of shared-forward.h
- Remove shared-forward.h include where the daemon specific forward
header is already included
Let's not leak details from src/shared and src/libsystemd into
src/basic, even though you can't actually do anything useful with
just forward declarations from src/shared.
The sd-forward.h header is put in src/libsystemd/sd-common as we
don't have a directory for shared internal headers for libsystemd
yet.
Let's also rename forward.h to basic-forward.h to keep things
self-explanatory.
Implements DHCP option 15 (Domain Name) for systemd-networkd's DHCP
server, allowing administrators to configure the DNS default domain that
clients should use.
This addresses the feature request in issue #37077, where users needed
to manually configure domain names using
SendOption=15:string:example.com as a workaround.
This adds two new configuration options to the [DHCPServer] section:
- EmitDomain= (boolean): whether to send domain name to clients
- Domain= (string): the domain name to send (e.g., "example.com")
Example configuration:
[DHCPServer] EmitDomain=yes Domain=example.com
This eliminates the need for manual workarounds using
SendOption=15:string:...
Fixes#37077
linux https://www.kernel.org/doc/html/latest/admin-guide/nfs/nfsroot.html
states `ntp0-ip` as parameter to `ip=` command line.
Until now systemd-network-generator would fail if ntp was provided with
-EINVAL due to trailing arguments.
Stay in line with kernel doc and handle ntp value properly.
In integration tests (for example TEST-85-NETWORK-NetworkctlTests)
LINK_OPERSTATE_RANGE_INVALID and required_for_online == -1 are serialized as
```
"RequiredForOnline": "true",
"RequiredOperationalStateForOnline": [null, null]
```
Such link should be reported as required_for_online=False and not
serialize nulls.
Fixes the following warning:
```
[ 130.968170] H systemd-networkd[4288]: Restart operation initiated.
[ 130.968265] H systemd-networkd[4288]: Serializing...
[ 130.968274] H systemd-networkd[4288]: There is nothing to serialize.
(snip)
[ 130.978756] H systemd[1]: Stopped systemd-networkd.service.
(snip)
[ 130.991407] H systemd[1]: Starting systemd-networkd.service...
(snip)
[ 131.077440] H systemd-networkd[4318]: Enumeration completed.
[ 131.077471] H systemd-networkd[4318]: Deserializing...
[ 131.077491] H systemd-networkd[4318]: Failed to parse json (line=0, column=0): No data available
[ 131.077524] H systemd-networkd[4318]: Failed to deserialize the previous invocation, ignoring: No data available
```
The 'NFTSet' directive in various units adds and removes entries in nftables
sets, it does not add or remove entire sets. The logging messages should
indicate that an entry was added or removed, not that a set was added or
removed.
bpf_loop() and bpf_strncmp(), used by sysctl-monitor, were introduced
in libbpf 0.7, so skip the module if using an older version
Follow-up for 6d9ef22acd
This renames and splits link_may_have_ipv6ll() into
link_ipv6ll_enabled_harder() and link_multicast_enabled(),
as they are completely irrelevant to each other.
Also, this makes link_ipv6ll_enabled_harder() work non-Wireguard
interfaces.
We use symbols provided by unistd.h without including it. E.g.
open(), close(), read(), write(), access(), symlink(), unlink(), rmdir(),
fsync(), syncfs(), lseek(), ftruncate(), fchown(), dup2(), pipe2(),
getuid(), getgid(), gettid(), getppid(), pipe2(), execv(), _exit(),
environ, STDIN_FILENO, STDOUT_FILENO, STDERR_FILENO, F_OK, and their
friends and variants, so on.
Currently, unistd.h is indirectly included mainly in the following two paths:
- through missing_syscall.h, which is planned to covert to .c file.
- through signal.h -> bits/sigstksz.h, which is new since glibc-2.34.
Note, signal.h is included by sd-eevent.h. So, many source files
indirectly include unistd.h if newer glibc is used.
Currently, our baseline on glibc is 2.31. We need to support glibc older
than 2.34, but unfortunately, we do not have any CI environments with
such old glibc. CIFuzz uses glibc-2.31, but it builds only fuzzers, and
many files are even not compiled.
[1] says:
> Since 0.60.0 the name argument is optional and defaults to the basename of
> the first output
We specify >= 0.62 as the supported version, so drop the duplicate name in all cases
where it is the same as outputs[0], i.e. almost all cases.
[1] https://mesonbuild.com/Reference-manual_functions.html#custom_target
Lennart Poettering
Luca Boccassi
Chris Down
Dr. David Alan Gilbert
Anton Tiurin
Nick Rosbrook
Yu Watanabe
Daan De Meyer
Govind Venugopal
Sebastian Gross
Anton Tiurin
Kevin P. Fleming
Mike Yuan
Zbigniew Jędrzejewski-Szmek
haxibami
Linus Heckemann