We normally expect sd-resolved only to return the validated subset of a
validated response. In some cases we give up on validating, because we
have enough information already to conclude the answer is bogus.
Let's be sure to always reply with only the validated subset in these
cases too, so that we don't return bogus answers and confuse primitive
clients that won't see the SERVFAIL rcode.
Fixes a bug introduced in e44f06065b: it was
supposed to be a refactoring, but unfortunately FOREACH_ARRAY is implemented
using a for loop, so when the 'goto finish' was replaced by 'break', it only
broke the inner loop, leading to a infinite loop.
Today listen file descriptors created by socket unit don't get passed to
commands in Exec{Start,Stop}{Pre,Post}= socket options.
This prevents ExecXYZ= commands from accessing the created socket FDs to do
any kind of system setup which involves the socket but is not covered by
existing socket unit options.
One concrete example is to insert a socket FD into a BPF map capable of
holding socket references, such as BPF sockmap/sockhash [1] or
reuseport_sockarray [2]. Or, similarly, send the file descriptor with
SCM_RIGHTS to another process, which has access to a BPF map for storing
sockets.
To unblock this use case, pass ListenXYZ= file descriptors to ExecXYZ=
commands as listen FDs [4]. As an exception, ExecStartPre= command does not
inherit any file descriptors because it gets invoked before the listen FDs
are created.
This new behavior can potentially break existing configurations. Commands
invoked from ExecXYZ= might not expect to inherit file descriptors through
sd_listen_fds protocol.
To prevent breakage, add a new socket unit parameter,
PassFileDescriptorsToExec=, to control whether ExecXYZ= programs inherit
listen FDs.
[1] https://docs.kernel.org/bpf/map_sockmap.html
[2] https://lore.kernel.org/r/20180808075917.3009181-1-kafai@fb.com
[3] https://man.archlinux.org/man/socket.7#SO_INCOMING_CPU
[4] https://www.freedesktop.org/software/systemd/man/latest/sd_listen_fds.html
Drop connections and caches and reload config from files, to allow
for low-interruptions updates, and hook up to the usual SIGHUP and
ExecReload=. Mark servers and services configured directly via D-Bus
so that they can be kept around, and only the configuration file
settings are dropped and reloaded.
Fixes https://github.com/systemd/systemd/issues/17503
Fixes https://github.com/systemd/systemd/issues/20604
* efi: Measure into both CC and TPM if available.
It's possible that both measurement protocols are made available, so
instead of assuming only one or the other are available, measure into
both to avoid a problem like CVE-2021-42299.
Signed-off-by: Dionna Glaze <dionnaglaze@google.com>
In case kernel-install is called to install what's already a UKI, 60-ukify
must be skipped. E.g. when distro shipped and signed UKI is being installed,
it is counter-productive to try to rebuild it with ukify. Also, the existing
script is not ready to handle UKIs with embedded initramfs.
Note, it is already possible to disable 60-ukify by setting
KERNEL_INSTALL_UKI_GENERATOR to something but in case it is not set, 60-ukify
assumes it should run.
To enable it, use "ephemeral-import" either for mutable mode environment
variable or for value of "--mutable=" flag.
This is a combination of "ephemeral" and "import" modes. It results in a
mutable hierarchy that includes contents of the mutable extension data, but the
modifications are thrown away when the hierarchy is unmerged.
To enable it, use "ephemeral" either for mutable mode environment variable or
for value of "--mutable=" flag.
Instead of using mutable dir in /var/lib/extensions.mutable/<hierarchy>, we
create a directory for overlayfs upperdir and workdir in the same tmpfs mount
that sysext worker process creates in /run/systemd/sysext. As the path for the
workdir will be gone when the worker quits, there is no need to do any
additional cleanup. As such, there is also no need to store a path to workdir
in the metadata directory.
Yu Watanabe
Ronan Pigott
Zbigniew Jędrzejewski-Szmek
Jakub Sitnicki
Antonio Alvarez Feijoo
Luca Boccassi
Mike Yuan
Dionna Amalie Glaze
Vitaly Kuznetsov
Krzesimir Nowak