udev: Provide a fallback for IPoIB device port numbers
In older kernels IPoIB network devices expose the port number via
the sysfs attribute 'dev_id', which is not intended to be used this way.
Let's support both options for a while.
An InfiniBand network address is 20 bytes long. Only the least
significant 8 bytes can be interpreted as a persistent hardware unit
identifier; the other 12 are transiently derived at runtime from metadata
specific to the protocol stack.
However, since the network interface name length is hard-capped by
IFNAMSIZ at 16 chars and the 2-byte type prefix with '\0' at the end
leave us only at 13, we cannot squeeze a descriptive representation of a
HW address into an interface name. Thus, it makes the most sense to drop
the scheme for IPoIB interfaces entirely.
Currently udev just gets confused and does what it has been taught
to do: fetches the first six bytes and puts them into a permanent
device attribute.
udev: Introduce predictable naming for InfiniBand NICs
We've long neglected IP-over-InfiniBand network interfaces, let's treat
them the same way we treat anyone else.
IPoIB interfaces will retain the 'ib' prefix; otherwise the naming scheme
is the same one we use for other network interfaces. E.g. a IPoIB network
device provided by a PCI card at bus 21 slot 0 function 6 will be named
'ibp21s0f6'.
detect-virt: do not try to read all of /proc/cpuinfo
Quoting https://github.com/systemd/systemd/issues/10074:
> detect_vm_uml() reads /proc/cpuinfo with read_full_file()
> read_full_file() has a file max limit size of READ_FULL_BYTES_MAX=(4U*1024U*1024U)
> Unfortunately, the size of my /proc/cpuinfo is bigger, approximately:
> echo $(( 4* $(cat /proc/cpuinfo | wc -c)))
> 9918072
> This causes read_full_file() to fail and the Condition test fallout.
Let's just read line by line until we find an intersting line. This also
helps if not running under UML, because we avoid reading as much data.
Since the commit torvalds/linux@fdb5c4531c1e0e50e609df83f736b6f3a02896e2
the syscall BPF_PROG_ATTACH return EBADF when CONFIG_CGROUP_BPF is
turned off and as result the bpf_firewall_supported() returns the
incorrect value.
This commmit replaces the syscall BPF_PROG_ATTACH with BPF_PROG_DETACH
which is still work as expected.
Resolves openbmc/linux#159
See also systemd/systemd#7054
Signed-off-by: Alexander Filippov <a.filippov@yadro.com>
core/execute: do not use the negative errno when setup_namespace() returns -ENOANO
Without this, log shows meaningless error message 'No anode', e.g.,
===
Failed to unshare the mount namespace: Operation not permitted
foo.service: Failed to set up mount namespacing: No anode
foo.service: Failed at step NAMESPACE spawning /usr/bin/test: No anode
===
socket-util: attempt SO_RCVBUFFORCE/SO_SNDBUFFORCE only if SO_RCVBUF/SO_SNDBUF fails
Both SO_SNDBUFFORCE and SO_RCVBUFFORCE requires capability 'net_admin'.
If this capability is not granted to the service the first attempt to increase
the recv/snd buffers (via sd_notify()) with SO_RCVBUFFORCE/SO_SNDBUFFORCE will
fail, even if the requested size is lower than the limit enforced by the
kernel.
If apparmor is used, the DENIED logs for net_admin will show up. These log
entries are seen as red warning light, because they could indicate that a
program has been hacked and tries to compromise the system.
It would be nicer if they can be avoided without giving services (relying on
sd_notify) net_admin capability or dropping DENIED logs for all such services
via their apparmor profile.
I'm not sure if sd_notify really needs to forcibly increase the buffer sizes,
but at least if the requested size is below the kernel limit, the capability
(hence the log entries) should be avoided.
Hence let's first ask politely for increasing the buffers and only if it fails
then ignore the kernel limit if we have sufficient privileges.
Alan Jenkins [Fri, 14 Sep 2018 03:11:57 +0000 (04:11 +0100)]
user-runtime-dir@.service: don't stop on runlevel switch (#10079)
Followup to commit 13cf422e04b7 ("user@.service: don't kill user manager at runlevel switch")
I think there's a general rule that units with `StopWhenUnneeded=yes` need
`IgnoreOnIsolate=yes`... But it doesn't apply to `suspend.target` and friends.
`printer.target` and friends break on isolate even if we apply the rule[1].
That just leaves `graphical-session.target`, which is a user service.
"isolate" is *mostly* a weird attempt to emulate runlevels, so I decided
not to worry about it for user services.
replace https://github.com/systemd/systemd/blob/master/doc/* with https://github.com/systemd/systemd/blob/master/docs/* to point to proper documentation
Thomas Blume [Wed, 12 Sep 2018 13:10:58 +0000 (15:10 +0200)]
user@.service: don't kill user manager at runlevel switch
Loggin in as root user and then switching the runlevel results in a
stop of the user manager, even though the user ist still logged in.
That leaves a broken user session.
Adding "IgnoreOnIsolate=true" to user@.service fixes this.
When $XDG_DATA_DIRS is unset, then, the default value
'/usr/local/share:/usr/share' is used.
When $XDG_DATA_DIRS contain the default paths but the order
is inverted: '/usr/share:/usr/local/share', then test-path-lookup fails.
Back in 08318a2c5acb3d0e4243c36461e69a3e45482441, value "false" was enabled for
'-Dtests=', but various tests were not conditionalized properly. So even with
-Dtests=false -Dslow-tests=false we'd run 120 tests. Let's make this consistent.
meson: disable "slow tests" too when tests are generally disabled
We would have a strange situation where after setting -Dslow-tests=true -Dtests=false
we'd get mostly the slow tests (plus some other ones which I'll fix in
subsequent commit). Let's simplify things by making -Dtests=false just
disable those tests too.
test: use ${builddir}/systemd-runtest.env for $SYSTEMD_CATALOG_DIR
This makes it so that tests no longer need to know the absolute paths to the
source and build dirs, instead using the systemd-runtest.env file to get these
paths when running from the build tree.
Confirmed that test-catalog works on `ninja test`, when called standalone and
also when the environment file is not present, in which case it will use the
installed location under /usr/lib/systemd/catalog.
The location can now also be overridden for this test by setting the
$SYSTEMD_CATALOG_DIR environment variable.
test: use ${builddir}/systemd-runtest.env to set $SYSTEMD_TEST_DATA
This simplifies get_testdata_dir() to simply checking for an environment
variable, with an additional function to locate a systemd-runtest.env file in
the same directory as the test binary and reading environment variable
assignments from that file if it exists.
This makes it possible to:
- Run `ninja test` from the build dir and have it use ${srcdir}/test for
test unit definitions.
- Run a test directly, such as `build/test-execute` and have it locate
them correctly.
- Run installed tests (from systemd-tests package) and locate the test
units in the installed location (/usr/lib/systemd/tests/testdata), in
which case the absence of the systemd-runtest.env file will have
get_testdata_dir() use the installed location hardcoded into the
binaries.
Explicit setting of $SYSTEMD_TEST_DATA still overrides the contents of
systemd-runtest.env.
This also unifies __filter_units_by_property() and
__filter_units_by_properties(), and makes completion for 'restart',
'reload' or 'stop' show more candidates.
systemctl: correctly proceed to immediate shutdown if scheduling fails
Actually check the return code from logind_schedule_shutdown() and proceed to
immediate shutdown if that fails. Negative return codes can be returned if
systemctl is compiled without logind support, or if logind otherwise failed
(either too old, disabled/masked, or it is incomplete
systemd-shim/systemd-service implementation).
In that case, the arp-type and MAC address is still unset. Note that
dhcp_network_bind_raw_socket() already checks for a valid arp-type
and MAC address below, so we should just gracefully return -EINVAL.
Maybe sd_dhcp_client_start() should fail earlier when starting without
MAC address. But the failure here will be correctly propagated and
the start aborted.