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We must restore part->mmap_begin when poping memfds from the memfd-cache.
We rely on the memfds to be unsealed, so we can be sure that we own the
whole FD. Therefore, simply set part->mmap_begin to the same as
part->data.
This fixes test-bus-kernel-benchmark.
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https://bugs.freedesktop.org/show_bug.cgi?id=85411
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for leaf units
Otherwise a slice or delegation unit might move PIDs around ignoring the
fact that it is attached to a subcgroup.
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Let's stick to generic sections that describe the general technology,
instead of specific per-object sections, unless we really have a reason
to do that otherwise.
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src/libsystemd/sd-bus/bus-common-errors.h
Stuff in src/shared/ should not use stuff from src/libsystemd/ really.
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When ICMPv6 Other information is received, enable Information request
in DHCPv6. If the DHCPv6 client already exists, only update the client
if there is a transition from Other to Managed state.
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Handle all aspects of ICMPv6 and DHCPv6 in a file of its own as is done
with DHCPv4 and IPv4LL.
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Start the DHCPv6 test case by sending an Information Request, verifying
the reply and continuing at once with the normal address acquisition
procedure. Reuse the DHCPv6 Solicit Reply so that the client code is
verified to ignore any erroneously added IPv6 address information.
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Implement Information Request message according to RFC 3315, section
18.1.5. with the excepion that the first message is not delayed by a
random amount. Instead systemd-networkd is supposed to take care of
desynchronizing between other clients.
Initialize the DHCPv6 client structure in sd_dhcp6_client_start()
as this allows toggling between information request and normal
DHCPv6 address aquisition modes.
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Suppyling a NULL lease is not a condition that needs to be asserted,
returning -EINVAL is informative enough to the caller. This simplifies
calling code and doesn't falsely indicate that something erroneous was
attempted.
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When all DHCPv6 options have been parsed, dhcp6_option_parse() returns
-ENOMSG. Explicitely set the return value to indicate success so that
later code does not need to take this special value into account.
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check /proc/1/environ
This way, we should be in a slightly better situation if a container is
booted up with only a shell as PID 1. In that case
/run/systemd/container will not be populated, and a check for it hence
be ineffective.
Checking /proc/1/environ doesn't fully fix the problem though, as the
file is only accessible with privileges. This means if PID 1 is not
systemd, and if privileges have been dropped the container detection
will continue to fail.
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The error was introduced in v215-343-g60731f32f1 'systemctl: do not
bother to mutate state on error', by causing strv_free to attempt to
free a static string. Simplify the whole thing by always keeping the
array in valid state.
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loop_write() didn't follow the usual systemd rules and returned status
partially in errno and required extensive checks from callers. Some of
the callers dealt with this properly, but many did not, treating
partial writes as successful. Simplify things by conforming to usual rules.
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kdbus is not available
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This way, we can ensure we have a more complete, up-to-date list of
capabilities around, always.
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native API for this in libmount, as soon as that's stable
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Let's add some syntactic sugar for iterating through inotify events, and
use it everywhere.
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candidate entry
Suppose that while iterating we have already looked into a journal file
and got a candidate for the next entry. And we are considering to look
into another journal file because it may contain an entry that is nearer
to the current location than the candidate.
We should skip the whole journal file if we can tell by looking at its
header that none of its entries can precede the candidate.
Before:
$ time ./journalctl --since=2014-06-01 --until=2014-07-01 > /dev/null
real 0m20.518s
user 0m19.989s
sys 0m0.328s
After:
$ time ./journalctl --since=2014-06-01 --until=2014-07-01 > /dev/null
real 0m9.445s
user 0m9.228s
sys 0m0.213s
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Interleaving of entries from many journal files is expensive. But there
is room for optimization.
We can skip looking into journal files whose entries all lie before the
current iterating location. We can tell if that's the case from looking
at the journal file header. This saves a huge amount of work if one has
many of mostly not interleaved journal files.
On my workstation with 90 journal files in /var/log/journal/ID/
totalling 3.4 GB I get these results:
Before:
$ time ./journalctl --since=2014-06-01 --until=2014-07-01 > /dev/null
real 5m54.258s
user 2m4.263s
sys 3m48.965s
After:
$ time ./journalctl --since=2014-06-01 --until=2014-07-01 > /dev/null
real 0m20.518s
user 0m19.989s
sys 0m0.328s
The high "sys" time in the original was caused by putting more stress on
the mmap-cache than it could handle. With the patch the working set
now consists of fewer mmap windows and mmap-cache is not thrashing.
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It is no longer used after 45af44d47da6933b260c734ad9ff721f63f80a4d
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If a unit is set property by "systemctl set-property", a new dropin
file is generated. But the unit's dropin_paths and dropin_mtime are
not updated. So the unit is shown as need daemon reload.
Update unit dropin_paths and dropin_mtime also when dropin file is
written.
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When dbus client connects to systemd-bus-proxyd through
Unix domain socket proxy takes client's smack label and sets for itself.
It is done before and independent of dropping privileges.
The reason of such soluton is fact that tests of access rights
performed by lsm may take place inside kernel, not only
in userspace of recipient of message.
The bus-proxyd needs CAP_MAC_ADMIN to manipulate its label.
In case of systemd running in system mode, CAP_MAC_ADMIN
should be added to CapabilityBoundingSet in service file of bus-proxyd.
In case of systemd running in user mode ('systemd --user')
it can be achieved by addition
Capabilities=cap_mac_admin=i and SecureBits=keep-caps
to user@.service file
and setting cap_mac_admin+ei on bus-proxyd binary.
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Support timer options --on-active=, --on-boot=, --on-startup=,
--on-unit-active=, --on-unit-inactive=, --on-calendar=. Each options
corresponding with OnActiveSec=, OnBootSec=, OnStartupSec=,
OnUnitActiveSec=, OnUnitInactiveSec=, OnCalendar= of timer
respectively. And OnCalendar= and WakeSystem= supported by
--timer-property= option like --property= of systemd-run.
And if --unit= option and timer options are specified the command can
be omitted. In this case, systemd-run assumes the target service is
already loaded. And just try to generate transient timer unit only.
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As kdbus no longer exports this, remove all traces from sd-bus too
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kdbus-git gained two new features:
* memfd offsets: This allows to specify a 'start' offset in kdbus_memfd
so you can send partial memfd hunks instead of always
the full memfd
* KDBUS_HELLO_UNPRIVILEGED: If passed during HELLO, the client will be
treated as unprivileged.
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inet_ntoa() uses a static buffer, so you can't call it twice in the
same fprintf() call.
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In the case where no entries have been added to the journal after the specified
cursor, set need_seek before the main loop to prevent display of the entry at
said cursor.
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it's not quite as destructive as it sounds nowadays
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If a cgroup fails to be destroyed (most likely because there are still
processes running as part of a service after the main pid exits), don't
free and remove the cgroup unit from the manager. This fixes a
regression introduced by the cgroup rework in v205 where systemd would
forget about processes still running after the unit becomes inactive.
(This can happen when the main pid exits and KillMode=process or none).
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There is no need to require mount.usrflags. The original implementation
assumed that a btrfs subvolume would always be needed but that is not
applicable to systems that do not use btrfs for /usr.
Similar to using rootflags= for the default of mount.usrflags=, append
the classic 'ro' and 'rw' flags to the mount options.
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https://bugs.freedesktop.org/show_bug.cgi?id=85527
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connections
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config_parse_warn_compat is now always used for removed options.
https://bugs.freedesktop.org/show_bug.cgi?id=87125
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The kernel always returns all addresses, rather than only for the given link, so let's only enumerate once.
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With DIRECTION_UP (i.e. navigating backwards) in generic_array_bisect() when the
needle was found as the last item in the array, it wasn't actually processed as
match, resulting in entries being missed.
https://bugs.freedesktop.org/show_bug.cgi?id=86855
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Nothing was being dropped, we just failed to account for the NLMSG_DONE.
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