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14 commits

Author SHA1 Message Date
Mikko Ylinen
3fd314b600 source/kernel: add more search paths
Signed-off-by: Mikko Ylinen <mikko.ylinen@intel.com>
2020-09-14 12:06:23 +03:00
Markus Lehtonen
a2b9df5cd3 nfd-worker: rework configuration handling
Extend the FeatureSource interface with new methods for configuration
handling. This enables easier on-the fly reconfiguration of the
feature sources. Further, it simplifies adding config support to feature
sources in the future. Stub methods are added to sources that do not
currently have any configurability.

The patch fixes some (corner) cases with the overrides (--options)
handling, too:
- Overrides were not applied if config file was missing or its parsing
  failed
- Overrides for a certain source did not have effect if an empty config
  for the source was specified in the config file. This was caused by
  the first pass of parsing (config file) setting a nil pointer to the
  source-specific config, effectively detaching it from the main config.
  The second pass would then create a new instance of the source
  specific config, but, this was not visible in the feature source, of
  course.
2020-05-21 00:59:37 +03:00
Markus Lehtonen
248859c64d source: parametrise host directory paths
Specify and handle system paths we use for discovery in a unified way.
2020-05-20 22:15:41 +03:00
Markus Lehtonen
640dc9fbf3 source: miscellaneous lint fixes 2020-05-20 21:48:06 +03:00
Pablo Rodriguez
3c81ff9d80 kernel.go: Replace forbidden symbols
Some Kernel versions include symbols such as "+".
Yocto L4T kernel is an example of this behaviour.
To fix this error all unknown symbols are replaced by an underscore.

Signed-off-by: Pablo Rodriguez <paroque28@gmail.com>
2020-05-15 17:58:08 +00:00
Markus Lehtonen
6002a00750 kernel: fix undefined symbol error
Fix a build failure that slipped through when adding support for
non-binary kconfig options in #197,
2019-06-10 15:25:41 +03:00
Kubernetes Prow Robot
8c666cbdc2
Merge pull request #197 from marquiz/devel/kconfig
Support non-binary kconfig options in kernel feature source
2019-06-07 11:44:00 -07:00
Markus Lehtonen
d4cb0e742b Use standard logger for all feature sources 2019-04-25 17:17:41 +03:00
Markus Lehtonen
eeed6d14b1 Support non-binary kconfig options in kernel feature source
Discover other than bool or tristate kconfig options, too. For bool and
tristate the node label is still binary (i.e. set to "true" if the
kconfig option has been enabled). For other kconfig types (e.g. string
or int) the value of the label directly corresponds to the value of the
kconfig flag, e.g. "32", "elf64-x86-64" etc.
2019-02-22 22:15:25 +02:00
Markus Lehtonen
e8249e6fa3 Move selinux detection to kernel feature source
Remove the 'selinux' feature source and move the functionality under the
'kernel' feature source. The selinux feature label is changed to
  feature.node.kubernetes.io/selinux.enabled

The selinux feature source was rather narrow in scope, and, the sole
feature it advertised naturally falls under the kernel feature source.
2019-01-03 10:08:28 +02:00
Markus Lehtonen
47a97db35a Import from sigs.k8s.io/node-feature-discovery 2018-12-04 15:15:46 +02:00
Markus Lehtonen
4053010dd9 Make the kernel feature source configurable
Adding two config options:
- kernel config file to read
- kconfig options that are detected
2018-12-04 09:34:56 +02:00
Markus Lehtonen
ce129aef88 Implement kernel config detection
This implementation only detects kconfig options ("NO_HZ", "NO_HZ_IDLE",
"NO_HZ_FULL" and "PREEMPT"). The corresponding node labels will be
  node.alpha.kubernetes-incubator.io/nfd-kernel-config.<option name>

Currently, only bool and tristate (i.e. '=y' or '=m') kernel config
options are supported. Other kconfig types (e.g. string or int) are
simply ignored. If the kconfig flag is set to '=y' or '=m', the
corresponding node label will be present and it's value will be 'true'.
2018-12-04 09:34:56 +02:00
Markus Lehtonen
86947fc16b Implement kernel version detection
Add a new 'kernel' feature source, detecting the kernel version. The
kernel version is split into multiple labels in order to make this more
usable in label selectors. Kernel version in the format X.Y.Z-patch will
be presented as
  node.alpha.kubernetes-incubator.io/nfd-kernel-version.full=X.Y.Z-patch
  node.alpha.kubernetes-incubator.io/nfd-kernel-version.major=X
  node.alpha.kubernetes-incubator.io/nfd-kernel-version.minor=Y
  node.alpha.kubernetes-incubator.io/nfd-kernel-version.revision=Z

The '.full' label will always be avaiable. The other labels if these
components can be parsed from the kernel version number.
2018-10-10 13:21:49 +03:00