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Other functions in sd-login generally allow the output parameter to be NULL, in
which case only the number of items that would be stored in the array is returned.
Be nice and do the same here.
C.f. 0543105b0f.
This makes if /run/systemd/{seats,sessions,users} are missing, then
sd_get_seats(), sd_get_sessions() and sd_get_uids() return 0, that is,
an empty list, instead of -ENOENT.
This fixes commit 5e354b2252 which was an attempt to avoid installation
of tmpfiles.d/systemd-remote.conf when it was not needed (ie HAVE_REMOTE=false).
Before this fix and with the autotool build, systemd-remote.conf was
distributed and also installed (although it was empty) even though
HAVE_REMOTE=false.
That's what happens when doing last second changes without retesting...
While at it, update tmpfiles.d/.gitignore (var.conf was missing as well
since commit a083537e5d).
$ reboot -f
Failed to read reboot parameter file: No such file or directory
It seems that the warning on ENOENT was inadvertently introduced in
27c06cb516.
The warning reported in #5646 comes from systemctl, but let's fix the other
call site in the same way too.
Fixes#5646.
The TAGS file was generated in build/ following what autotools did.
Nevertheless, it's more convenient to put in the source dir.
(It doesn't get deleted by mistake, and it's easier to find for the
editor.)
The -ENOMEDIUM return value was introduced in v232-1001-g2977724b09,
('core: make hybrid cgroup unified mode keep compat /sys/fs/cgroup/systemd hierarchy'),
and would be returned by cg_pid_get_path_shifted(), but the documented and
expected return value is -ENODATA. Let's just catch ENXIO/ENOMEDIUM and translate
it to ENODATA in all cases.
Complements 171f8f591f, fixes#6012.
They require a writable /tmp dir (in the bash implementation).
Let's use echo, and not 'echo -e' since that doesn't seem to be completely
portable.
Fixes#6052.
Some .install plugins does not require that machine ID is set such as
20-grubby.install for Fedora and 50-depmod.install.
To support such plugins to run without valid machine-id, this commit
makes the following change:
* if /etc/machine-id is missing or empty, create temporary directory
and set its path to BOOT_DIR_ABS,
* run the .install helpers with KERNEL_INSTALL_MACHINE_ID environment
variable that'd be empty if /etc/machine-id is missing or empty.
This may be useful for installing kernel for e.g. stateless systems
which initialize machine-id while booting the systems.
Formatting sd-cards does not trigger "change" uevents. As a result clients
using udev API don't get any updates afterwards and get outdated information
about the device.
Include mmcblk* in a match for watch option assignment.
Test ICMPv6 Router Solicitation exponential backoff timer by
computing the minimum and maximum values according to RFC 7559,
Section 2 and the algorithm itself described in RFC 3315, Section
14. Reset the sd_ndisc timer to trigger after a zero second delay,
which causes the ndisc timeout to be triggered immediately once
the caller of the "sending" function returns to the main loop.
Move ICMPv6 Router Solicitation sending after timer computation so
that timers are already set up when the packet is being sent. This
makes it possible to create a test that inspects Router
Solicitation timer values when the Router Solicitation is sent out
on the network.
Instead of sending a fixed amount of Router Solicitiations, implement
the backoff algorithm proposed in RFC 7559. The backoff algorithm is
the same as used by DHCPv6.
Time out after 12s as specified in RFC 4861 in order not to delay
setting up a link for too long while sending Router Solicitations
in the background. Notice that after this change the callback will
receive a SD_NDISC_EVENT_TIMEOUT timeout event, and at a later point
when a router appears, a received Router Advertisment will cause the
callback to be called again with the SD_NDISC_EVENT_ROUTER event.
this patch makes it possible to configure a vlan aware bridge without the
PVID. To configure no PVID set DefaultPVID=none in the [BridgeVLAN] section.
fixes#5716
This adds two options that are useful for user units. In particular, it
is useful to check ConditionUser=!0 to not start for the root user.
Closes: #5187
Many eMMC devices have separate boot partitions that aren't part of the
normal partition table that show up as /dev/mmcblk[0-9]boot[0-9]. These
partitions are generally small (128KB to 16MB) and typically hold a boot
loader, boot loader data or a recovery image. Match these and create
-boot%n by-path symlinks.
Prior to this change by-path symlinks for the main device would be
incorrectly linked to one of the boot partitions.
For instance before:
/dev/disk/by-path/platform-219c000.usdhc linked to /dev/mmcblk1boot1
Now:
/dev/disk/by-path/platform-219c000.usdhc links to /dev/mmcblk1
/dev/disk/by-path/platform-219c000.usdhc-boot0 links to /dev/mmcblk1boot0
/dev/disk/by-path/platform-219c000.usdhc-boot1 links to /dev/mmcblk1boot1
On systems that support multiple SD/MMC devices it can be essential to
have by-path links to these devices since device names vary depending on
which other devices are connected.
Commit f5938e8ff3 started dropping all
messages before we become a monitor, but the last one was getting
through.
This drops also the last NameLost message, which indicatse the switch
from a regular peer to a monitor.
We parse the string supplied in NTP_SERVERS during configuration under an
assert_se(). Right now we will accept pretty much anything there, but in case
we are more picky in the future, add a simple test which checks that we can
actually parse whatever is in NTP_SERVERS so that we don't fail the assertion
at runtime.
On a machine without a VGA console, /dev/tty{0,1,…} exist, so
systemd-vconsole-setup is started, but all setfont operations fail.
setfont has a bunch of return codes for different failure modes. It uses
EX_OSERR when the communication with the kernel using ioctls fails. This isn't
too specific, but at least it's only used this general class of errors. Let's
swallow the error in this case to avoid systemd-vconsole-setup.service failing
on cloud vms.
On a machine from https://bugzilla.redhat.com/show_bug.cgi?id=1272686#c4:
$ build/systemd-vconsole-setup
setfont: putfont: 512,8x16: failed: -1
putfont: PIO_FONT: Invalid argument
/usr/bin/setfont failed with error code 71.
Setting fonts failed with a "system error", ignoring.
$ SYSTEMD_LOG_LEVEL=debug build/systemd-vconsole-setup
Found container virtualization none.
Sysfs UTF-8 flag enabled
UTF-8 kbdmode enabled on /dev/tty0
Executing "/usr/bin/setfont -C /dev/tty0 eurlatgr"...
setfont: putfont: 512,8x16: failed: -1
putfont: PIO_FONT: Invalid argument
/usr/bin/setfont failed with error code 71.
Executing "/usr/bin/loadkeys -q -C /dev/tty0 -u us"...
/usr/bin/loadkeys succeeded.
Setting fonts failed with a "system error", ignoring.
$ lspci | grep -i vga
$ ls /dev/tty?
/dev/tty0 /dev/tty2 /dev/tty4 /dev/tty6 /dev/tty8
/dev/tty1 /dev/tty3 /dev/tty5 /dev/tty7 /dev/tty9
If we have a better test for /dev/tty? being connected to something that has a
font, we could avoid running setfont at all… ATM, I'm not aware of a simple
test like that.
This makes it quite a bit easier to see what failed.
strv_join is called inline in log_debug so that it is under the conditional
that kills the whole thing if debugging is disabled.
Currently the local variable `address` is unintialized if the DHCP lease
doesn't provide a router address (when r == -ENODATA). Thus the
subsequent call to route_scope_from_address will result in accessing an
unintialized variable.
As a matter of fact, sd-dhcp-client ignores DHCP leases without an
address so link_dhcp_set_routes probably will never be called without a
valid address.
Since commit 36c16a7cdd ("core: rework unit timeout handling, and add
new setting RuntimeMaxSec=") TimeoutSec=0 in mount units has
cause the mount to timeout immediately instead of never as documented.
There is a similar problem with Socket.TimeoutSec and Swap.TimeoutSec.
These are easily fixed using config_parse_sec_fix_0().
Automount.TimeoutIdleSec looks like it could have the same problem,
but doesn't because the kernel treats '0' as 'no timeout'.
It handle USEC_INFINITY correctly only because that constant has
the value '-1', and when round up, it becomes zero.
To avoid possible confusion, use config_parse_sec_fix_0() as well, and
explicitly handle USEC_INFINITY.
When automatic /tmp mount was introduced to nspawn in v219, it was done without having the nosuid and nodev mount options, which was the same case as systemd's default tmp.mount unit back then.
nosuid and nodev was added to tmp.mount(.m4) in v231 for security reasons. matching the nspawn /tmp mount entry against that.
Ref.:
2f9df7c96abbb99c30d0
LLDP should be received on bridge slaves as they're the entities
directly connected to a peer. Receiving LLDP on the bridge device makes
little sense, Linux by default even filters out LLDP going onto the
bridge device.
Flip the current logic, receive LLDP on bridge slaves don't listen for
them on the bridge itself.
Let's log about this in the caller.
Doesn't really matter, but let's do something about my OCD, and
propagate errors properly, so that the caller can log about them.
