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Making keys case insensitive should help if caps lock is on.
We are not advertising them at runtime or in the manual to
reduce the noise.
This also hides the quit and version commands from the help
string. They are mostly for devs and otherwise have little
to no use to normal users. The latter overlaps with print
status which is still advertised.
This basically does what the previous two commits did for systemd-import
+ systemd-pull but for systemd-import-fs.
This commit is a bit simpler though, as a --direct mode doesn't change
that much. It's mostly about not searching for existing, conflicting
images and not much else.
This does what the previous commit did for systemd-import the same way
for systemd-pull.
It also adds one more thing: the checksum validation is extended, in
addition of doing SHA256SUMS/gpg verification it is now possible to
immediately specify a hash value on the command line that the download
needs to match. This is particularly useful in --direct mode as we can
download/decompress/unpack arbitrary files and check the hash of the
downloaded file on-the-fly.
This reworks/modernizes the tar/raw import logic and adds the following
new features:
- Adds the ability to control btrfs subvol and quota behaviour which was
previously always on via an env var and cmdline arg
- Adds control whether to sync() stuff after writing it, similar via env
var + cmdline arg
- Similar, the QCOW2 unpacking logic that was previously the implied
default may now be controlled via env var + cmdline arg.
- adds a "direct" mode. In this mode, the systemd-import tool can be
used as a simple tool for decompressing/unpacking/installing arbitrary
files, without all the additional meta data and auxiliary resources,
i.e. outside of the immediate disk image context. Via the new
--offset= and --size-max= switches the downloaded data can be written
to specific locations of a file (which is particularly useful to use
the tool to download fs images and write them to a partition location
before actually creating the partition).
We'll later use the latter feature for "sysupdate" concept, where images
can be directly be written to partitions. That way the systemd-import
binary will be used as backend for both "systemd-importd" and
"systemd-sysupdate" and share most of the same code.
This adds a bit of generic helper tools for installing files/dir trees.
"installing" is supposed to mean the final step when preparing a disk
image or directory tree, where the result is renamed to its final name.
It has some bells and whistles, as it is able to replace existing files
sanely, can fsync() things carefully and can mark things read-only in a
nice way.
This is supposed to be generic, unified code that can be used eventually
for any of our tools that prepare disk images/directory trees, including
importd, nspawn's --template= mechanism, the discover-image.c logic,
and more.
While we haven't implemented a key for users to set MACVLAN/MACVTAP flags,
we can at least allow them to make use of the Promiscuous= key of
the corresponding link to set the nopromisc flag.
Note that this slightly breaks backward compatibility when
Termination=1. Previously, this is handled as boolean true, then 120 ohm
was used. But now with this commit, it is handled as 1 ohm.
We only need the PE header offset from the DOS header, not
its size. Previously, the section table could be cut off in the middle.
While we are at it, also modernize the remaining code.
The SERVFAIL RCODE can be generated for many reasons which may not be related
to lack of feature support. For example, the Stubby resolver generates
SERVFAIL when a request times out. Such transient failures can cause
unnecessary downgrades to both the transaction and the server's feature level.
The consequences of this are especially severe if the server is in DNSSEC
strict mode. In this case repeated downgrades eventually cause the server to
stop resolving entirely with the error "incompatible-server".
To avoid unnecessary downgrades the request should be retried once with the
current level before the transaction's feature level is downgraded.
The commit introduces a callback invoked from log_syntax_internal.
Use it from systemd-analyze to gather a list of units that contain
syntax warnings. A new command line option is added to make use of this.
The new option --recursive-errors takes in three possible modes:
1. yes - which is the default. systemd-analyze exits with an error when syntax warnings arise during verification of the
specified units or any of their dependencies.
3. no - systemd-analyze exits with an error when syntax warnings arise during verification of only the selected unit.
Analyzing and loading any dependencies will be skipped.
4. one - systemd-analyze exits with an error when syntax warnings arise during verification
of only the selected units and their direct dependencies.
Below are two service unit files that I created for the purposes of testing:
1. First, we run the commands on a unit that does not have dependencies but has a non-existing key-value setting (i.e. foo = bar).
> cat <<EOF>testcase.service
[Unit]
foo = bar
[Service]
ExecStart = echo hello
EOF
OUTPUT:
maanya-goenka@debian:~/systemd (log-error)$ sudo build/systemd-analyze verify testcase.service
/home/maanya-goenka/systemd/testcase.service:2: Unknown key name 'foo' in section 'Unit', ignoring.
/usr/lib/systemd/system/plymouth-start.service:15: Unit configured to use KillMode=none. This is unsafe, as it disables systemd's process lifecycle management for the service. Please update your service to use a safer KillMode=, such as 'mixed' or 'control-group'. Support for KillMode=none is deprecated and will eventually be removed.
/usr/lib/systemd/system/dbus.socket:5: ListenStream= references a path below legacy directory /var/run/, updating /var/run/dbus/system_bus_socket → /run/dbus/system_bus_socket; please update the unit file accordingly.
/usr/lib/systemd/system/gdm.service:30: Standard output type syslog is obsolete, automatically updating to journal. Please update your unit file, and consider removing the setting altogether.
maanya-goenka@debian:~/systemd (log-error)$ echo $?
1
maanya-goenka@debian:~/systemd (log-error)$ sudo build/systemd-analyze verify --recursive-errors=yes testcase.service
/home/maanya-goenka/systemd/testcase.service:2: Unknown key name 'foo' in section 'Unit', ignoring.
/usr/lib/systemd/system/plymouth-start.service:15: Unit configured to use KillMode=none. This is unsafe, as it disables systemd's process lifecycle management for the service. Please update your service to use a safer KillMode=, such as 'mixed' or 'control-group'. Support for KillMode=none is deprecated and will eventually be removed.
/usr/lib/systemd/system/dbus.socket:5: ListenStream= references a path below legacy directory /var/run/, updating /var/run/dbus/system_bus_socket → /run/dbus/system_bus_socket; please update the unit file accordingly.
/usr/lib/systemd/system/gdm.service:30: Standard output type syslog is obsolete, automatically updating to journal. Please update your unit file, and consider removing the setting altogether.
maanya-goenka@debian:~/systemd (log-error)$ echo $?
1
maanya-goenka@debian:~/systemd (log-error)$ sudo build/systemd-analyze verify --recursive-errors=no testcase.service
/home/maanya-goenka/systemd/testcase.service:2: Unknown key name 'foo' in section 'Unit', ignoring.
maanya-goenka@debian:~/systemd (log-error)$ echo $?
1
maanya-goenka@debian:~/systemd (log-error)$ sudo build/systemd-analyze verify --recursive-errors=one testcase.service
/home/maanya-goenka/systemd/testcase.service:2: Unknown key name 'foo' in section 'Unit', ignoring.
/usr/lib/systemd/system/plymouth-start.service:15: Unit configured to use KillMode=none. This is unsafe, as it disables systemd's process lifecycle management for the service. Please update your service to use a safer KillMode=, such as 'mixed' or 'control-group'. Support for KillMode=none is deprecated and will eventually be removed.
/usr/lib/systemd/system/dbus.socket:5: ListenStream= references a path below legacy directory /var/run/, updating /var/run/dbus/system_bus_socket → /run/dbus/system_bus_socket; please update the unit file accordingly.
/usr/lib/systemd/system/gdm.service:30: Standard output type syslog is obsolete, automatically updating to journal. Please update your unit file, and consider removing the setting altogether.
maanya-goenka@debian:~/systemd (log-error)$ echo $?
1
2. Next, we run the commands on a unit that is syntactically valid but has a non-existing dependency (i.e. foo2.service)
> cat <<EOF>foobar.service
[Unit]
Requires = foo2.service
[Service]
ExecStart = echo hello
EOF
OUTPUT:
maanya-goenka@debian:~/systemd (log-error)$ sudo build/systemd-analyze verify foobar.service
/usr/lib/systemd/system/plymouth-start.service:15: Unit configured to use KillMode=none. This is unsafe, as it disables systemd's process lifecycle management for the service. Please update your service to use a safer KillMode=, such as 'mixed' or 'control-group'. Support for KillMode=none is deprecated and will eventually be removed.
/usr/lib/systemd/system/dbus.socket:5: ListenStream= references a path below legacy directory /var/run/, updating /var/run/dbus/system_bus_socket → /run/dbus/system_bus_socket; please update the unit file accordingly.
/usr/lib/systemd/system/gdm.service:30: Standard output type syslog is obsolete, automatically updating to journal. Please update your unit file, and consider removing the setting altogether.
foobar.service: Failed to create foobar.service/start: Unit foo2.service not found.
maanya-goenka@debian:~/systemd (log-error)$ echo $?
1
maanya-goenka@debian:~/systemd (log-error)$ sudo build/systemd-analyze verify --recursive-errors=yes foobar.service
/usr/lib/systemd/system/plymouth-start.service:15: Unit configured to use KillMode=none. This is unsafe, as it disables systemd's process lifecycle management for the service. Please update your service to use a safer KillMode=, such as 'mixed' or 'control-group'. Support for KillMode=none is deprecated and will eventually be removed.
/usr/lib/systemd/system/dbus.socket:5: ListenStream= references a path below legacy directory /var/run/, updating /var/run/dbus/system_bus_socket → /run/dbus/system_bus_socket; please update the unit file accordingly.
/usr/lib/systemd/system/gdm.service:30: Standard output type syslog is obsolete, automatically updating to journal. Please update your unit file, and consider removing the setting altogether.
foobar.service: Failed to create foobar.service/start: Unit foo2.service not found.
maanya-goenka@debian:~/systemd (log-error)$ echo $?
1
maanya-goenka@debian:~/systemd (log-error)$ sudo build/systemd-analyze verify --recursive-errors=no foobar.service
maanya-goenka@debian:~/systemd (log-error)$ echo $?
0
maanya-goenka@debian:~/systemd (log-error)$ sudo build/systemd-analyze verify --recursive-errors=one foobar.service
/usr/lib/systemd/system/plymouth-start.service:15: Unit configured to use KillMode=none. This is unsafe, as it disables systemd's process lifecycle management for the service. Please update your service to use a safer KillMode=, such as 'mixed' or 'control-group'. Support for KillMode=none is deprecated and will eventually be removed.
/usr/lib/systemd/system/dbus.socket:5: ListenStream= references a path below legacy directory /var/run/, updating /var/run/dbus/system_bus_socket → /run/dbus/system_bus_socket; please update the unit file accordingly.
/usr/lib/systemd/system/gdm.service:30: Standard output type syslog is obsolete, automatically updating to journal. Please update your unit file, and consider removing the setting altogether.
foobar.service: Failed to create foobar.service/start: Unit foo2.service not found.
maanya-goenka@debian:~/systemd (log-error)$ echo $?
1
The MANAGER_TEST_RUN_IGNORE_DEPENDENCIES flag was added in order to allow the caller
to skip the recursive loading of dependency units when loading specific
unit files. This includes the default dependencies, the specified dependencies, the slice.
This will be used by systemd-analyze to allow checking individual unit files in isolation.
