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This properly detects the state of the link based on both the link flags and the
operstate.
Moreover, always log state-changes even if we are not yet managing the link.
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Avoid having two code-paths racing with eacother to do the same thing. The change
of flags will be detected in the normal way, so only use the link_up_handler
to detect if the 'up' failed and in that case fail the link.
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This reverts commit cdc85c875b842b9309f72caefc51c262f521cf92.
There appears to be a kernel bug that (among other things) cause bridges
not to get a bridge id set when supplying IFLA_ADDRESS when creating the
netdev.
Simply revert the whole thing until we sort this out in the kernel.
See: http://www.spinics.net/lists/netdev/msg279807.html
Reported-by: C. R. Oldham <cr@saltstack.com>
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When rebooting with systemctl, an optional argument can be passed to the
reboot system call. This makes it possible the specify the argument in a
service file and use it when the service triggers a restart.
This is useful to distinguish between manual reboots and reboots caused by
failing services.
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And move it to sperate function.
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Cases where name_to_handle_at is used allocated the full struct to be
MAX_HANDLE_SZ, and assigned this size to handle_bytes. This is wrong
since handle_bytes should describe the length of the flexible array
member and not the whole struct.
Define a union type which includes sufficient padding to allow
assignment of MAX_HANDLE_SZ to be correct.
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MAC addreses are also set when NEWLINK messages are receieved, but only if the clients have
already been initialized.
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Should be no functional change, but avoids spurious log
messages when in operstate UNKNOWN and !IFF_LOWER_UP.
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Drop leading zeros which will never be used when printing the link flags.
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The address may be already changed by other processes, or set
when creating the netdev from userspace.
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This is a second attempt at 9754d56, reverted in 2f20a8e, because
I lost a 'break;' when moving chunks around.
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when processing multi-part message
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We may receive RTM_NEWLINK messages with missing LINKINFO after the initial NEWLINK message,
don't bother verifying these, just drop out early after checking that the ifindex is not in conflict.
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This essentially swaps the roles of rtnl and udev in networkd. After this
change libudev is only used for waiting for udev to initialize devices and
to get udev-specific information needed for some [Match] attributes.
This in particular simplifies the code in containers where udev is not really
useful, but also simplifies things and reduces round-trips in the non-container
case.
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If nothing interesting was receieved we should not put anything on
the queue.
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Also, don't actually read any of the message when peeking, just get its length.
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This reverts commit 9754d56e9b21bfe89fc18f47987d6bef491b8521.
It causes a crash in PID1:
Apr 19 13:49:32 lon systemd[1]: Code should not be reached 'Unhandled socket type.'
at src/core/socket.c:684, function instance_from_socket(). Aborting.
Apr 19 13:49:32 lon systemd[1]: Caught <ABRT>, dumped core as pid 336.
Apr 19 13:49:32 lon systemd[1]: Freezing execution.
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https://bugzilla.redhat.com/show_bug.cgi?id=1088418
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create_symlink() do not check the return value of unlink(), this may
confuse the user.
Before the unlink() call we check the 'force' argument. If it is not set
we fail with -EEXIST, otherwise we unlink() the file, therefore the next
symlink() should not fail with -EEXIST (do not count races...).
However since callers may not have appropriate privileges to unlink()
the file we lose the -EPERM or any other errno code of unlink(), and
return the -EEXIST of the next symlink(). Fix this by checking unlink()
results.
Before:
$ systemctl --force --root=~/container-03 set-default multi-user.target
Failed to set default target: File exists
After:
$ systemctl --force --root=~/container-03 set-default multi-user.target
Failed to set default target: Permission denied
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Currently "systemctl set-default" will fail to change the default target
due to the 'default.target' being a symlink which is always the case.
To work around this, the user must specify the "--force" switch to be
able to overwrite the existing symlink.
This is clearly a regression that was introduced by commit 718db96199e
since it worked before without the "--force" switch and the man pages do
not mention that you need to specify it. It is expected that this is a
symlink.
So just explicity set the force flag to make it work again.
https://bugs.freedesktop.org/show_bug.cgi?id=76623
Reported-by: <code@progandy.de>
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NixOS uses Unix domain sockets for certain host <-> container
interaction; i.e. the host connects to a socket visible in the
container's directory tree, where the container uses a .socket unit to
spawn the handler program on demand. This worked in systemd 203, but
in 212 fails with "foo.socket failed to queue service startup job
(Maybe the service file is missing or not a template unit?): No data
available".
The reason is that getpeercred() now returns ENODATA if it can't get
the PID of the client, which happens in this case because the client
is not in the same PID namespace. Since getpeercred() is only used to
generate the instance name, this patch simply handles ENODATA by
creating an instance name "<nr>-unknown".
[zj: reorder clauses and remove (unsigned long) casts.]
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test-path-utils attempts to find itself, but if the binary is not
in current directory, the test would fail.
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It turns out that plain sysctl understands a.b/c syntax to write to
/proc/sys/a/b.c. Support this for compatibility.
https://bugs.freedesktop.org/show_bug.cgi?id=77466
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