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networkd: IPv6 fixes
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Fix multiple unaligned accesses in test-dns-packet and sd-dhcp-server.
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various sd-Ipv4ll/sd-ipv4acd fixes
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systemctl: return success for set-default, add-wants, add-requires...
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We need to explicitly define authorizations for allow_inactive and
allow_active. Otherwise one is getting "Access denied" when run from a
local console:
$ loginctl enable-linger
Could not enable linger: Access denied
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If an interface is managed as a bridge slave, we don't want any IP configuration for it. Therefore, disable IPv6 in such case.
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When we manage an interface with networkd but not as a slave (i.e. no `Bridge=` or `Bond=` set in its .network), we do not want it to remain slaved.
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On the unified hierarchy, memory controller implements three control knobs -
low, high and max which enables more useable and versatile control over memory
usage. This patch implements support for the three control knobs.
* MemoryLow, MemoryHigh and MemoryMax are added for memory.low, memory.high and
memory.max, respectively.
* As all absolute limits on the unified hierarchy use "max" for no limit, make
memory limit parse functions accept "max" in addition to "infinity" and
document "max" for the new knobs.
* Implement compatibility translation between MemoryMax and MemoryLimit.
v2:
- Fixed missing else's in config_parse_memory_limit().
- Fixed missing newline when writing out drop-ins.
- Coding style updates to use "val > 0" instead of "val".
- Minor updates to documentation.
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dbus-cgroup fixes
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nspawn: filesystem uid patching fixes and other minor improvments
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The argument is about capabilities.
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Split seccomp into nspawn-seccomp.[ch]. Currently there are no changes,
but this will make it easy in the future to share or use the seccomp logic
from systemd core.
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Rename is_procfs_sysfs_or_suchlike() to is_fs_fully_userns_compatible()
to give it the real meaning. This may prevent future modifications that
may introduce bugs.
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Add some special filesystems that should not be shifted, most of them
relate to the host and not to containers.
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We have to pass addresses of changes and n_changes to
bus_deserialize_and_dump_unit_file_changes(). Otherwise we are hit by
missing information (subsequent calls to unit_file_changes_add() to
not add anything).
Also prevent null pointer dereference in
bus_deserialize_and_dump_unit_file_changes() by asserting.
Fixes #3339
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As suggested:
https://github.com/systemd/systemd/pull/3328#discussion-diff-64285764
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Let's use usec_t internally always, when dealing with time values.
Let's use uint8_t* pointers if we are dealing with generic byte pointers.
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Whitespace doesn't hurt and helps structuring things.
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Let's better check the size before we subtract. Also, let's change the size
argument to size_t, as it cannot be signed anyway.
Finally, use EBADMSG for indicating invalid packets, like we do everywhere
else.
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Otherwise it gets too confusing whether "timeout" refers to an event source or
just a timeout time specification.
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Also make use of it where appropriate.
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There's no "client" object, in both cases. There's only "nd".
This wasn't noticed before, as the context object is currently not actually
used by the log macros.
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Appears to be a (confusing) left-over from copy/paste when this still was
ipv4ll code.
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Appears to be a copy/paste mistake from sd-ipv4ll. Let's get rid of this.
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Let's make the seed actually work as stable seed, and use siphash24 to generate
the series of addresses, instead of the opaque libc random_r().
This not only makes the seed truly work as stable, portable seed, but also
makes the code quite a bit shorter, and removes a couple of memory allocations.
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Let's make clear this always has the same size, since otherwise it's not useful
for reproducible runs, which this is really about however.
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for errors
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We try to stick to usec_t for encoding time information, do that here too. In
particular, get rid of "int" second specifications, since signed timespans are
a weird thing.
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This state is active immediately after the state engine was started, but before
the first timer hits.
This way multiple _start() invocations on the same object are always detected
correctly.
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This is much less confusing, since there's also sd_ipv4acd_stop(), which was
idfferent from ipv4acd_stop().
After renaming it, let's also use the funciton when destroying ipv4acd objects,
as the code is pretty much the same for that.
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Otherwise the field "receive_message" is a bit too confusing, as it suggests it
actually stores a message object of some kind.
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They are counters after all, and can never go below zero, hence don't pretend
with the chose type that they could.
Also, prefix their name with "n_", to indicate that they are counters.
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And some other minor fixes.
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Or actually, not at any level higher than debug.
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These objects are only useful when multiple threads are involved, as they
operate with atomic operations. Given that our libraries are explicitly not
thread-safe don't make use of RefCnt here, and make things a bit simpler.
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It's OK to abbreviate this in the local scope, but otherwise, let's not be
needlessly terse.
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It's a good idea to make stopcalls idempotent, so that they become nops if the
object is already stopped.
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