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let's not make up new errors in these checks that validate if connect()
work at all. After all, we don't really know if the ENXIO we saw earlier
actually is really caused by the inode being an AF_UNIX socket, we just
have the suspicion...
This way we can implement nice fallbacks later on.
While we are at it, provide a test for this (one that is a bit over the
top, but then again, we can never have enough tests).
The issue #12953 is caused by the following:
On switching root,
- deserialized_found == DEVICE_FOUND_UDEV | DEVICE_FOUND_MOUNT,
- deserialized_state == DEVICE_PLUGGED,
- enumerated_found == DEVICE_FOUND_MOUNT,
On switching root, most devices are not found by the enumeration process.
Hence, the device state is set to plugged by device_coldplug(), and then
changed to the dead state in device_catchup(). So the corresponding
mount point is unmounted. Later when the device is processed by udevd, it
will be changed to plugged state again.
The issue #23208 is caused by the fact that generated udev database in
initramfs and the main system are often different.
So, the two issues have the same root; we should not honor
DEVICE_FOUND_UDEV bit in the deserialized_found on switching root.
This partially reverts c6e892bc0e.
Fixes#12953 and #23208.
Replaces #23215.
Co-authored-by: Martin Wilck <mwilck@suse.com>
Previously, in sd_device_new_from_subsystem_sysname(), '/' in sysname
was replaced '!' for several limited subsystems. This was based on a wrong
assumption that no sysname in e.g. driver subsystem does not contain '!'.
And the assumption is actually wrong, and trigger issue #23327.
In device_set_sysname_and_sysnum() we unconditionally replace '!' in the
filename. Hence, the translation in sd_device_new_from_subsystem_sysname()
must be also done unconditionally.
Fixes#23327.
Without the size limits, oss-fuzz creates huge samples that time out. Usually
this is because some of our code has bad algorithmic complexity. For data like
configuration samples we don't need to care about this: non-rogue configs are
rarely more than a few items, and a bit of a slowdown with a few hundred items
is acceptable. This wouldn't be OK for processing of untrusted data though.
We need to set the limit in two ways: through .options and in the code. The
first because it nicely allows libFuzzer to avoid wasting time, and the second
because fuzzers like hongfuzz and afl don't support .options.
While at it, let's fix an off-by-one (65535 is the largest offset for a
power-of-two size, but we're checking the size here).
Co-authored-by: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
The methods published by the example have a reply in the signature, but
the code was not sending any, so the client gets stuck waiting for a
response that doesn't arrive. Echo back the input string.
Update the object path to follow what would be the canonical format.
Request a service name on the bus, so that the code can be dropped in a
service and it can be dbus-activatable. It also makes it easier to see
on busctl list.
test-execute checks that only /var/lib/private/waldo is writable, but there are
some filesystems that are always writable and excluded. Add /sys/devices/system/cpu
which is created by lxcfs.
Fixes https://github.com/systemd/systemd/issues/23263
With an intentional mistake:
../src/login/logind-dbus.c: In function ‘bus_manager_log_shutdown’:
../src/login/logind-dbus.c:1542:39: error: format ‘%s’ expects a matching ‘char *’ argument [-Werror=format=]
1542 | LOG_MESSAGE("%s %s", message),
| ^~~~~~~
Also break some long lines for more uniform formatting. No functional change.
I went over all log_struct, log_struct_errno, log_unit_struct,
log_unit_struct_errno calls, and they seem fine.
This is trivially exploitable (in the sense of causing a crash from SEGV) e.g.
by 'shutdown now "Message %s %s %n"'. The message is settable through polkit,
but is limited to auth_admin:
<action id="org.freedesktop.login1.set-wall-message">
<description gettext-domain="systemd">Set a wall message</description>
<message gettext-domain="systemd">Authentication is required to set a wall message</message>
<defaults>
<allow_any>auth_admin_keep</allow_any>
<allow_inactive>auth_admin_keep</allow_inactive>
<allow_active>auth_admin_keep</allow_active>
</defaults>
</action>
Bug introduced in 9ef15026c0
('logind/systemctl: introduce SetWallMessage and --message', 2015-09-15).
