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resolved. Fully implement search domains for single-label names
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core: support <soft:hard> ranges for RLIMIT options
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man: Add a not that mount unit cannot be templated
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minor resolved fixes
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man: fix function name
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It may be unexpected to find a CNAME record when doing a reverse lookup, as we
expect to find a PTR record directly. However, it is explicitly supported
according to <https://tools.ietf.org/html/rfc2181#section-10.2>, and there
seems to be no benefit to not supporting it.
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The assumption that no NSEC bitmap could be empty due to the presence of the bit representing
the record itself turns out to be flawed. See (the admittedly experimental) RFC4956 for a
counter example.
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The new dns_label_escape() call now operates on a buffer passed in,
similar to dns_label_unescape(). This should make decoding a bit faster,
and nicer.
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For similar reasons as dns_name_is_root() got changed in the previous
commit.
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Let's change the return value to bool. If we encounter an error while
parsing, return "false" instead of the actual parsing error, after all
the specified hostname does not qualify for what the function is
supposed to test.
Dealing with the additional error codes was always cumbersome, and
easily misused, like for example in the DHCP code.
Let's also rename the functions from dns_name_root() to
dns_name_is_root(), to indicate that this function checks something and
returns a bool. Similar for dns_name_is_signal_label().
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This adds support for searching single-label hostnames in a set of
configured search domains.
A new object DnsQueryCandidate is added that links queries to scopes.
It keeps track of the search domain last used for a query on a specific
link. Whenever a host name was unsuccessfuly resolved on a scope all its
transactions are flushed out and replaced by a new set, with the next
search domain appended.
This also adds a new flag SD_RESOLVED_NO_SEARCH to disable search domain
behaviour. The "systemd-resolve-host" tool is updated to make this
configurable via --search=.
Fixes #1697
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For now, let's just expose the LLMNR hostname currently in use; a
combined list of all dns servers with their interface indexes; a
combined list of all search domains with their interface indexes.
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Let's split this out from the resolv.conf parser, so that this becomes
generically useful.
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ordered_set_ensure_allocated() does for an OrderedSet, what
set_ensure_allicated() does for a Set.
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This copies concepts we introduced for the DnsSearchDomain stuff, and
reworks the operations on lists of dns servers to be reusable and
generic for use both with the Link and the Manager object.
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With this change, we add a new object to resolved, "DnsSearchDomain="
which wraps a search domain. This is then used to introduce a global
search domain list, in addition to the existing per-link search domain
list which is reword to make use of this new object too.
This is preparation for implement proper unicast DNS search domain
support.
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Previously, we'd keep adding new dns servers we discover to the end of
our linked list of servers. When we encountered a pre-existing server,
we'd just leave it where it was. In essence that meant that old servers
ended up at the front, and new servers at the end, but not in an order
that would reflect the configuration.
With this change we ensure that every pre-existing server we want to add
again we move to the back of the linked list, so that the order is
stable and in sync with the requested configuration.
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Closes #342.
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Previously, there was a chance of memory corruption, because when
switching to the next DNS server we didn't care whether they linked list
of DNS servers was still valid.
Clean up lifecycle of the dns server logic:
- When a DnsServer object is still in the linked list of DnsServers for
a link or the manager, indicate so with a "linked" boolean field, and
never follow the linked list if that boolean is not set.
- When picking a DnsServer to use for a link ot manager, always
explicitly take a reference.
This also rearranges some logic, to make the tracking of dns servers by
link and globally more alike.
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resolved-dns-server.c
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No functional changes.
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Let's use the same parser when parsing dns server information from
/etc/resolv.conf and our native configuration file.
Also, move all code that manages lists of dns servers to a single place.
resolved-dns-server.c
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Don't propagate any error in this case, it's really not an error.
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/etc/resolv.conf is only read when the DNS= setting does not appear at
all in resolved.conf, regardless if set to the empty list or anything
else. Correct that in the man page.
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Wen DnsQuestion objects are used for DnsQuery objects all contained keys
have to share the same name, but otherwise they generally don't have to,
and this can actually happen in real-life because DnsPacket objects for
mDNS use DnsQuestion for the question section.
Hence, rename:
dns_question_is_valid() to dns_question_is_valid_for_query(), since the
name uniqueness check it does is only relevant when used for a query.
Similar, rename dns_question_name() to dns_question_first_name(),
to be more accurate, as this difference matters if we keys don#t have to
share the same name.
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networkd: link - do not drop config for loopback device
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Commit 5e5b137a (networkd: link - drop foreign config when configuring
link) introduced a regression where addresses (including 127.0.0.1) are
removed from loopback device.
Do not handle loopback device when removing foreign configs.
Signed-off-by: Christian Hesse <mail@eworm.de>
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tests: remove unnecessary /sys/fs/cgroup/systemd checking
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A unified hierarchy obsoletes this checking
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The new parser supports:
<value> - specify both limits to the same value
<soft:hard> - specify both limits
the size or time specific suffixes are supported, for example
LimitRTTIME=1sec
LimitAS=4G:16G
The patch introduces parse_rlimit_range() and rlim type (size, sec,
usec, etc.) specific parsers. No code is duplicated now.
The patch also sync docs for DefaultLimitXXX= and LimitXXX=.
References: https://github.com/systemd/systemd/issues/1769
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bash-completion: list valid signal names
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resolved: remove unused variable
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this is a follow-up for commit 18540892d18addc4dcb81
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tests: don't rely on system's machined
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bash-completion: list only valid signal names
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Fixup for #1999.
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Fixes backward/forward incompatibility errors on spawning.
For example:
$ sudo make run
...
Failed to register machine: Cannot set property TasksMax, or unknown
property.
$ ../../systemd-nspawn --version
systemd 228
$ systemd-nspawn --version
systemd 225
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test: make QEMU tests work on Semaphore
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core: mount flags remove FOREACH_WORD_SEPARATOR
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basic: fix build on architectures with small long
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The x32 architecture has a small "long" type which is not enough to hold
struct statfs.f_type.
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FOREACH_WORD_SEPARATOR is no need here since we only
apply only one mount flag. The rvalue is sufficient for
this.
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Implement client-side DNAME RR resolving
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