This setting allows services to run in an ephemeral copy of the root
directory or root image. To make sure the ephemeral copies are always
cleaned up, we add a tmpfiles snippet to unconditionally clean up
/var/lib/systemd/ephemeral. To prevent in use ephemeral copies from
being cleaned up by tmpfiles, we use the newly added COPY_LOCK_BSD
and BTRFS_SNAPSHOT_LOCK_BSD flags to take a BSD lock on the ephemeral
copies which instruct tmpfiles to not touch those ephemeral copies as
long as the BSD lock is held.
Let's reduce the argument count of setup_namespace() a bit by loading
the sidecar verity settings in apply_mount_namespace(). This will also
make it possible to pass file descriptors to the root image/directory
into setup_namespace() as before this wasn't possible because the
verity settings logic looks for sidecar files next to the
root image which requires the path to be available.
When making ephemeral snapshots of subvolumes whose cleanup depends on
whether they're locked or not, it's necessary to have the lock from the
very beginning, so let's support that with a new BTRFS_SNAPSHOT_LOCK_BSD
flag.
Before this commit, we only accept the case when LoaderDevicePartUUID
points to the ESP, while XBOOTLDR is mounted unconditionally.
After this commit, we check if LoaderDevicePartUUID points to either
ESP or XBOOTLDR. If it does, mount both, else nothing gets mounted.
This reverts commit ff32060f2e.
This change is incorrect as we don't want to mark the PID as invalid but
only mark it as dead.
The change in question also breaks user level socket activation for
`podman.service` as the termination of the main `podman system service`
process is not properly handled, causing any application accessing the
socket to hang.
This is because the user-level `podman.service` unit also hosts two
non-main processes: `rootlessport` and `rootlessport-child` which causes
the `cgroup_good` check to still succeed.
The original submitter of this commit is recommended to find another
more correct way to fix the cgroupsv1 issue on CentOS 8.
Let's visually separate the options associated with cpu, io, memory, …
in subsections
This patch tries to be minimal. It just adds the section titles, and
does minimal reordering to make sure the options on the same kind of
resource are placed close to each other.
The order of the description of each item should match the order that they are declared. Un-document effect of deprecated non-unified CGroup hierarchy on
DefaultCPUAccounting=. Mention that the default value for DefaultCPUAccouting= is
affected by the kernel version.
If the backing storage is LUKS2 on a block device, auto resize mode
is enabled, and disk size is not specified, resize the partition to
the maximum expandable size.
Fixes: #22255, #23967
We now run repart before starting systemd-nspawn to make sure that
the root partition is also generated when we boot the image in a
container instead of a VM.
To make sure we start from scratch for both the container boot and
the VM boot, we also enable Ephemeral to make sure all changes to
the image are ephemeral.
When trying to log, if we fail we try to close the journal FD. If
it is bad, safe_close() will fail and assert, which will try to log,
which will fail, which will try to close the journal FD...
Infinite recursion looks very pretty live in gdb, but let's avoid
that by immediately invalidating the journal FD before closing it.
The UEFI spec has a generic `Path` node representation that can be used
for device path nodes that are unknown. So we can use that instead of
giving up when we see a node other than FilePath.
This also simplifies the FilePath case by just using xasprintf(). The
code is really just a fallback for silly firmware that does not
implement EFI_DEVICE_PATH_TO_TEXT_PROTOCOL (looking at you, Apple).
The correctness of this was tested by round-tripping it through
EFI_DEVICE_PATH_FROM_TEXT_PROTOCOL, which yielded an identical device
compared to our input path.
When we call safe_fork() with the first argument set (process name), we
call rename_process() that zeroes out saved argv (that was saved by
save_argc_argv() in the main func defined by DEFINE_MAIN_FUNC()). In this
case this means that with --accept both the target executable name and
its arguments will be empty strings:
```
$ systemd-socket-activate --accept --listen 1111 cat &
Listening on [::]:1111 as 3.
$ curl localhost:1111
Communication attempt on fd 3.
Connection from 127.0.0.1:52948 to [::ffff:127.0.0.1]:1111
Spawned cat (cat) as PID 10576.
Execing ()
Failed to execp (): No such file or directory
Child 10576 died with code 1
curl: (56) Recv failure: Connection reset by peer
```
Let's make a copy of the necessary arguments beforehand and use it
instead to fix this.
Daan De Meyer
Lennart Poettering
Mike Yuan
cvlc12
Zbigniew Jędrzejewski-Szmek
msizanoen
Frantisek Sumsal
Sam Morris
Luca Boccassi
David Tardon
Gibeom Gwon
Frantisek Sumsal
licunlong
Jan Janssen
Yu Watanabe