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The code already calls sd_notify("READY=1"), so we may as well take
advantage of the startup behavior in the unit. The same was done for
the journal in a87a38c20.
The client identifier can be in many different formats, not just
the one that systemd creates from the Ethernet MAC address. Non-
ethernet interfaces may have different client IDs formats. Users
may also have custom client IDs that the wish to use to preserve
lease options delivered by servers configured with the existing
client ID.
client->secs wasn't getting set in the REBOOT state, causing
an assertion. REBOOT should work the same way as INIT, per
RFC 2131:
secs 2 Filled in by client, seconds elapsed since client
began address acquisition or renewal process.
REBOOT is necessary because some DHCP servers (eg on
home routers) do not hand back the same IP address unless the
'ciaddr' field is filled with that address, which DISCOVER
cannot do per the RFCs. This leads to multiple leases
on machine reboot or DHCP client restart.
fix:
CID 1237553 (#1 of 6): Unchecked return value from library
(CHECKED_RETURN
CID 1237553 (#3 of 6): Unchecked return value from library
(CHECKED_RETURN)
CID 1237553 (#4 of 6): Unchecked return value from library
(CHECKED_RETURN)
CID 1237553 (#5 of 6): Unchecked return value from library
(CHECKED_RETURN
CID 1237553 (#6 of 6): Unchecked return value from library
(CHECKED_RETURN)
CID#979416. There is no real race here to fix, but lets make coverity
happy and rework the code.
Note that we still fail if the directory is removed _after_ we ran
mkdir(), so the same race is still there. Coverity is complaining, though.
Rewrite the code to make it happy.
(David: rewrote the commit-message to note that this is not a race. If I'm
wrong, blame me, not Ronny!)
The access check call was broken (as it tried to read a service name
from the UpdateActivationEnvironment() method call which doesn't carry
any). Also, it's unnecessary to make any access checks here, as we just
forward the call to PID 1 which should do the access checks necessary.
Turns out we can just do kmod_setup() earlier, before we do mount_setup(),
so there's no need for mount_setup_late() anymore. Instead, put kdbusfs in
mount_table[].
kdbus has seen a larger update than expected lately, most notably with
kdbusfs, a file system to expose the kdbus control files:
* Each time a file system of this type is mounted, a new kdbus
domain is created.
* The layout inside each mount point is the same as before, except
that domains are not hierarchically nested anymore.
* Domains are therefore also unnamed now.
* Unmounting a kdbusfs will automatically also detroy the
associated domain.
* Hence, the action of creating a kdbus domain is now as
privileged as mounting a filesystem.
* This way, we can get around creating dev nodes for everything,
which is last but not least something that is not limited by
20-bit minor numbers.
The kdbus specific bits in nspawn have all been dropped now, as nspawn
can rely on the container OS to set up its own kdbus domain, simply by
mounting a new instance.
A new set of mounts has been added to mount things *after* the kernel
modules have been loaded. For now, only kdbus is in this set, which is
invoked with mount_setup_late().
There are issues to investigate on with policies shipped by some
packages, which we'll address later. Move that topic out of the
way for now to bring sd-bus in sync with upstream kdbus.
add tests for the following directives:
- WorkingDirectory
- Personality
- IgnoreSIGPIPE
- PrivateTmp
- SystemCallFilter: It makes test/TEST-04-SECCOMP obsolete, so it has
been removed.
- SystemCallErrorNumber
- User
- Group
- Environment
kdbus learned parsing the attach flags for the KDBUS_CMD_BUS_CREATOR_INFO
ioctl. Bits not set in this mask will not be exported. Set that field to
_KDBUS_ATTACH_ALL for now.
Signed-off-by: Daniel Mack <daniel@zonque.org>
In order to check for matching policy entries at message transfers, we
have to consider the following:
* check the currently owned names of both the sending and the receiving
peer. If the sending peer is connected via kdbus, the currently owned
names are already attached to the message. If it was originated by the
connection we're proxying for, we store the owned names in our own strv
so we can check against them.
* Walk the list of names to check which name would allow the message to
pass, and explicitly use that name as destination of the message. If the
destination is on kdbus, store both the connection's unique name and the
chosen well-known-name in the message. That way, the kernel will make sure
the supplied name is owned by the supplied unique name, at the time of
sending, and return -EREMCHG otherwise.
* Make the policy checks optional by retrieving the bus owner creds, and
when the uid matches the current user's uid and is non-null, don't check
the bus policy.
We need to figure out which of the possible names satisfied the policy,
so we cannot do the iteration in check_policy_item() but have to leave it
to the users.
Test cases amended accordingly.
