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alloc-util: extract overflow check into inline function
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This patch contains a set of little cleanups for alloc-util.h:
1. The malloc_multiply(), realloc_multiply() and memdup_multiply()
functions check allocation related parameters on overflow. Let's
move them to the separate size_multiply_overflow() function for
simplicity, code duplication prevention and possible reuse in future.
2. use SIZE_MAX from stdlib instead of ((size_t) - 1) to be more
clear.
3. The 'a'/'b' variables are renamed to 'size' and 'need' to be
more clear.'
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This reverts commit cb48dfca6a8bc15d9081651001a16bf51e03838a.
Exec*-settings resolve specifiers twice:
%%U -> config_parse_exec [cb48dfca6a8] -> %U -> service_spawn -> 0
Fixes #2637
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+ perl -e 'exit(!(qq{0} eq qq{\x25U}))'
exec-spec-interpolation.service: Main process exited, code=exited, status=1/FAILURE
exec-spec-interpolation.service: Unit entered failed state.
exec-spec-interpolation.service: Failed with result 'exit-code'.
PID: 11270
Start Timestamp: Wed 2016-02-17 22:21:31 UTC
Exit Timestamp: Wed 2016-02-17 22:21:31 UTC
Exit Code: exited
Exit Status: 1
Assertion 'service->main_exec_status.status == status_expected' failed at src/test/test-execute.c:65, function check(). Aborting.
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resolve: dumping of binary packets
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DNS_TYPE_STRING_MAX causes a problem with the table autogeneration code,
change to _DNS_TYPE_STRING_MAX.
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When the buffer is allocated on the stack we do not have to check for
failure everywhere. This is especially useful in debug statements, because
we can put dns_resource_key_to_string() call in the debug statement, and
we do not need a seperate if (log_level >= LOG_DEBUG) for the conversion.
dns_resource_key_to_string() is changed not to provide any whitespace
padding. Most callers were stripping the whitespace with strstrip(),
and it did not look to well anyway. systemd-resolve output is not column
aligned anymore.
The result of the conversion is not stored in DnsTransaction object
anymore. It is used only for debugging, so it seems fine to generate it
when needed.
Various debug statements are extended to provide more information.
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This fixes formatting of root domain in debug messages:
Old:
systemd-resolved[10049]: Requesting DS to validate transaction 19313 (., DNSKEY with key tag: 19036).
New:
systemd-resolved[10049]: Requesting DS to validate transaction 19313 (, DNSKEY with key tag: 19036).
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With two nested loops and a switch statements, it's quite hard to
understand what break and continue mean.
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$ systemd-resolve --raw --openpgp zbyszek@fedoraproject.org | pgpdump /dev/stdin
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The output didn't specify if the default for --cname/--search/--legend and
other options was yes or no. Change the description to be explicit about that.
Also make the --help output and man page closer.
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Networkd, resolved, build-sys fixes
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networkd: FIONREAD is not reliable on some sockets
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main: no need to set errno manually
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Most domain names we deal with are normalized anyway (since we read them that
way from DNS packets), but some might not (because they are synthesized from
unnormalized configuration or so), hence make sure to normalize all names
before passing them out to clients, to be fully deterministic.
Note that internally we are process normalized and non-normalized names the
same way, and while comparing them ignore the differences due to unnormalized
names. However, that internal implementation detail really shouldn't spill out
the clients, hence make sure to clean it all up.
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Fixes fall-out from 8b3aa503c171acdb9ec63484a8c50e2680d31e79.
Fixes: #2635
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Fixes: #2632
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authenticated
Doing DNS retrieval on non-authenticated crypt keys is useless, hence warn
loudly about it.
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This patch makes networkd stay around as long as there is more than just a
loopback interface around, or the loopback device isn't fully probed yet, or
the loopback device has a .network file attached.
In essence, this means networkd stays around now continously as it should,
unless it is running in some (container?) environment that really has no
interface except a loopback device.
Fixes #2577.
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Before this patch existence of char16_t, char32_t, key_serial_t was checked
with AC_CHECK_DECLS() which doesn't actually work for types. Correct this to
use AC_CHECK_TYPES() instead.
Also, while we are at it, change the check for memfd_create() to use
AC_CHECK_DECLS() instead of AC_CHECK_FUNCS(). This is a better choice, since a
couple of syscalls are defined by glibc but not exported in the header files
(pivot_root() for example), and we hence should probably be more picky with
memfd_create() too, which glibc might decide to expose one day, but not
necessarily in the headers too.
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Let's make sure DNSSEC gets more testing, by defaulting DNSSEC to
"allow-downgrade" mode. Since distros should probably not ship DNSSEC enabled
by default add a configure switch to disable this again.
DNSSEC in "allow-downgrade" mode should mostly work without affecting user
experience. There's one exception: some captive portal systems rewrite DNS in
order to redirect HTTP traffic to the captive portal. If these systems
implement DNS servers that are otherwise DNSSEC-capable (which in fact is
pretty unlikely, but still...), then this will result in the captive portal
being inaccessible. To fix this support in NetworkManager (or any other network
management solution that does captive portal detection) is required, which
simply turns off DNSSEC during the captive portal detection, and resets it back
to the default (i.e. on) after captive portal authentication is complete.
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If we are not PID 1 and started as init, we executing systemctl
with execv(). Here no need to set errno manually, because in a
failure case, because the execv() anyway will set errno depends
on a error.
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systemctl: fix style to avoid modification of array passed by caller
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Fixes: #2457
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Followup for 4524439edb7d.
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time-util: Rename and fix call of deserialize_timestamp_value()
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The deserialize_timestamp_value() is renamed timestamp_deserialize() to be more
consistent with dual_timestamp_deserialize()
And add the NULL check back on realtime and monotonic
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systemctl: include -M or -H arguments in the hint
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https://github.com/systemd/systemd/issues/2431
Some newlines are added, but the output will still exceed 80 columns in many
cases. The fallback for oom conditions is changed from "n/a" to something
"<service>", and a similar pattern is used for the new code. This way we
have a realistic fallback for oom, which seems nicer than making the whole
function return an error code which would then have to be propagated.
$ systemctl -M fedora-rawhide restart systemd-networkd.service
Job for systemd-networkd.service failed because start of the service was attempted too often.
See "systemctl -M fedora-rawhide status systemd-networkd.service" and "journalctl -M fedora-rawhide -xe" for details.
To force a start use "systemctl -M fedora-rawhide reset-failed systemd-networkd.service"
followed by "systemctl -M fedora-rawhide start systemd-networkd.service" again.
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time-util: introduce deserialize_timestamp_value()
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which is introduced in the ebf30a086d commit.
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which is introduced in the ebf30a086dfa commit.
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The time-util.c provides dual_timestamp_deserialize() function to
convert value to usec_t and set it as value of ts->monotonic and
ts->realtime.
There are some places in code which do the same but only for one
clockid_t (realtime or monotonic), when dual_timestamp_deserialize()
sets value of both.
This patch introduces the deserialize_timestamp_value() which converts
a given value to usec_t and write it to a given timestamp.
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The function must never fail.
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remove bus-proxyd
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Move activate to bin, extend --fdnames functionality
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We already define IFLA_PROMISCUITY and some other of these masks in
order to allow building with older headers. Define IFLA_EXT_MASK too,
which was added in the same kernel version as IFLA_PROMISCUITY (v3.10).
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bus property name fix in resolved
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Previously we'd miss a necessary whitespace at the end of arrays, if more data
was following.
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If the hostname passed to ResolveHostname() is actually an IP address that is
correctly formatted as string parse it as such, avoid any DNS traffic and
return the data in parsed form.
This is useful for clients which can simply call the bus function now without
caring about the precise formatting of specified hostnames. This mimics
getaddrinfo()'s behaviour with the AI_NUMERICHOST flag set.
Note that this logic is only implemented for ResolveHostname(), but not for
calls such as ResolveRecord(), for which only DNS domain names may be used as
input.
The "authenticated" flag is set for look-ups of this type, after all no
untrusted network traffic is involved.
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Another property name fuck-up. The property contains both search and routing
domains and hence should be exposed as "Domains" rather than "SearchDomains".
The counterpart in the Link object was correctly named, and the
SetLinkDomains() and SetDomains() setter calls too, hence let's get this right,
too.
(Yepp, a minor API break actually, but given that this was so far not
documented, and only 3 days public let's fix this now)
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We call dual_timestamp_serialize() only if the s->watchdog_timestamp is
set. But the dual_timestamp_serialize() already checks a given dual
timestamp by the call of the dual_timestamp_is_set(). So we can remove
this check safely.
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By mistake the "DNSSECSupported" bus property of the Link object got named
"DNSSECSupport". Internally, it's named correctly, and the counterpart on the
"Manager" object got named correctly too.
Technically this rename is an API break, but given that the interface is not
documented or widely announced yet, and just 3 days in a published release,
let's just fix this, and hope nobody notices.
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Previous code only allowed a single name to be passed, and duplicated
it over all descriptors. For the sake of testing, allow different
names and in arbitrary number. If just one is given, duplicate it
to match the number of sockets. This matches previuos behaviour.
Since this is a testing tool, it seems useful to allow passing invalid
names to test application behaviour with invalid names. Hence, only
warn. When warning, escape the name.
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Empty strings were ignored in strv_join, but only if they were at the beginning
of the string. Empty strings after at least one non-empty item were treated
normally.
Previously:
{"x"} → "x"
{"x", ""} → "x"
{"x", "", ""} → "x::"
{""} → ""
{"", ""} → ""
{"", "", ""} → ""
{"", "x"} → "x"
{"", "x", ""} → "x:"
Now:
{"x"} → "x"
{"x", ""} → "x"
{"x", "", ""} → "x::"
{""} → ""
{"", ""} → ":"
{"", "", ""} → "::"
{"", "x"} → ":x"
{"", "x", ""} → ":x:"
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Some spring cleaning
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