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The flag is automatically set by kernel when the valid lifetime is
infinite. Note that the flag in netlink message for IPv4 address is
ignored. See set_ifa_lifetime() in kernel's net/ipv4/devinet.c.
But the flag is honored for IPv6 address. And if the flag is set with
finite valid lifetime, the address will not removed automatically by
the kernel.
If an address is assigned with IFA_F_MANAGETEMPADDR, then the flag must
be also set on remove. Otherwise, temporary addresses will not be
removed. See also inet6_rtm_deladdr() in kernel's net/ipv6/addrconf.c.
Fixes#13218.
The difference between sd_rtnl_message_new_addr() and
sd_rtnl_message_new_addr_update() is only whether NLM_F_REPLACE flag
will be set or not.
If an address is already assigned, then we need to set NLM_F_REPLACE
flag, otherwise, address_configure() will be fail.
This makes address_configure() judge whether we should use the flag or
not.
This use on %n was completely unnecessary: fprintf returns the number of
characters written. And the issue was that if fprintf failed for whatever
reason, it would not process the %n and m would be unitialized. Rework the
code a bit to simplify it.
Coverity CID#1444708.
Coverity says:
CID 1446387 (#1 of 1): Bad bit shift operation (BAD_SHIFT)
8. negative_shift: In expression 1U << (int)cmd, shifting by a negative amount
has undefined behavior. The shift amount, cmd, is -22.
I don't think there's any issue, unless we forget to set token->data
appropriately. Let's add an assert.
Similar to DHCPv4's UseHostname option, add a UseFQDN config option in
[DHCPv6] to set the system's transient hostname if the FQDN option is
set in the DHCPv6 response from the server.
Let's use uint32_t everywhere to maintain the seqno, since that's what
the kernel does. Prviously in the reply_callback logic we used 64bit,
for no apparent reason.
Using 32bit also provides us with the benefit that we can avoid using
uint64_hash_ops, and can use trivial_hash_ops instead for the reply
hashmap, so that we can store the seqno in the key pointer directly.
While we are at it, let's make sure we never run into serial collisions
internally (32bit is a lot, but not that much), and let's put a limit on
outstanding serials, to catch programming errors.
I don't think it's realistic to operate without /proc/. Hence, let's
make this explicit.
If one day someone finds a way to do what we need without /proc/ we can
certainly drop this check again, but for now I think it's a lot
friendlier to users to make this explicitly early on instead continuing
to run and then not do what we need to do, oftentimes failing in cryptic
ways.
After all, invoking the tool without /proc/ is not an error that was
specific to some of the lines we process, but it's systematic error that
will show its ugly face in many codepaths down the line.
Fixes: #14745
Whenever a unit deactivates sucessfully we so far generated a message
"unit xyz: succeeded". This is a bit confusing, since various unit types
cannot really "succeed", e.g. a device unit can't really "suceed", not
can a swap unit. In particular in the latter case people would probably
assume that a swap unit that "suceeded" would actually mean a swap was
active now, but the opposite is actually true.
Let's improve this by saying "Deactivated successfully", which hopefully
clears this up.
(I thought about saying "terminated" or "completed" or "finished" or so
instead, but that too doesn#t make sense if you think about unit types
like swaps or devices.)
Docker doesn't set $container, so it cannot be detected that way. Instead, we
check for presence of /.dockerinit, which it creates. Podman does set
$container, but some Red Hat images (in particular, Fedora images) override
$container to equal "oci". So to correctly detect Podman containers, we check
for presence of /run/.containerenv, which is created by Podman and is now the
official way to get information about the container from within the container.
Fixes https://github.com/systemd/systemd/issues/15393
Add 'reattach' verb to portablectl, and corresponding DBUS interface
to systemd-portabled.
Takes the same parameters as 'attach', but it will do a 'detach' (and
it will refuse to proceed if it cannot be done) first, matching on
the unversioned prefix of the new image. Eg:
portablectl reattach /tmp/foo_2.raw
will cause foo_1.raw to be detached, and foo_2.raw to be attached.
The key difference with a manual 'detach old' plus 'attach new' is that
the running units are not disturbed until after the attach completed,
and if --now is passed they are then restarted.
A 'detach' is not allowed normally if the units are running.
By using a restart-after-deploy method, 'reattach' allows for minimal
interruption of service and also for features that only work on restart
(eg: file descriptor store) to work as intended.
The DBUS interface returns two lists: first the removals from the detach
that were not immediately re-added in the attach, so that the caller
can stop the relevant units, and then the list of additions that are
either new or updates, so that the caller can restart/enable the
relevant units. portablectl already implements this with the existing
--now/--enable switches.
Binaries on the latest Arch Linux use `call` instructions instead of
`callq`, which breaks the ASan detection and eventually the image
building process (due to insufficient space).
