This change adds a features config that allows
individual features to be toggled at a global level. Each feature can (by default)
be controlled by an environment variable.
The GDS, MOFED, NVSWITCH, and GDRCOPY features are examples of such features.
Signed-off-by: Evan Lezar <elezar@nvidia.com>
Since the `createContainer` `runc` hook runs with the environment that
the container's config.json specifies, the path to `ldconfig` may not be
easily resolvable if the host environment differs enough from the
container (e.g. on a NixOS host where all binaries are under hashed
paths in /nix/store with an Ubuntu container whose PATH contains
FHS-style paths such as /bin and /usr/bin). This change allows for
specifying exactly where ldconfig comes from.
Signed-off-by: Jared Baur <jaredbaur@fastmail.com>
This change adds crun as a configured low-level runtime.
Note that runc still preferred and will be used if present on the
system.
Signed-off-by: Evan Lezar <elezar@nvidia.com>
For users running the nvidia-container-runtime it would be useful
to determine the runtime mode used from the logs directly instead
of relying on other log messages as signals. This change ensures
that an explicitly selected mode is also logged instead of only
when mode=auto.
Signed-off-by: Evan Lezar <elezar@nvidia.com>
Using `WithDevRoot` on Tegra platforms was incorrectly setting
`driverRoot`, fix it so that it correctly sets `devRoot`.
Signed-off-by: Jared Baur <jaredbaur@fastmail.com>
This change adds support for an NVIDIA_NVSWITCH environment variable.
When set to `enabled` this striggers the injection of all available
/dev/nvidia-nvswitch* device nodes.
Signed-off-by: Evan Lezar <elezar@nvidia.com>
This change adds a driver root abstraction that defines how
libraries are located relative to the root. This allows for
this driver root to be constructed once and passed to discovery
code.
Signed-off-by: Evan Lezar <elezar@nvidia.com>
Instead of relying solely on a static config, we resolve the path
to ldconfig. The path is checked for existence and a .real suffix is preferred.
Signed-off-by: Evan Lezar <elezar@nvidia.com>
This change renames NewGraphicsDiscoverer to NewDRMNodesDiscoverer and
instead calls NewGraphicsMountsDiscoverer explicitly when constructing
a graphics modifier.
This avoids the import of config.Config into the discover package
which leads to a transitive dependency on toml-specifics and
requires that the vendor/github.com/pelletier/ package
be vendored in to consumers.
Signed-off-by: Evan Lezar <elezar@nvidia.com>
A driverRoot defines both the driver library root and the
root for device nodes. In the case of preinstalled drivers or
the driver container, these are equal, but in cases such as GKE
they do not match. In this case, drivers are extracted to a folder
and devices exist at the root /.
The changes here add a devRoot option to the nvcdi API that allows the
parent of /dev to be specified explicitly.
Signed-off-by: Evan Lezar <elezar@nvidia.com>
Since we allow pattern inputs for locating symlinks we could have
multiples. The error being checked is resolved by the deduplication.
Signed-off-by: Evan Lezar <elezar@nvidia.com>
These changes make library lookups more robust. The core change is that
library lookups now first look a set of predefined locations before checking
the ldcache. This also handles cases where an ldcache is not available more
gracefully.
Signed-off-by: Evan Lezar <elezar@nvidia.com>
This change allows CDI devices to be requested as mounts in the
container. This enables their use in environments such as kind
where environment variables or annotations cannot be used.
Signed-off-by: Evan Lezar <elezar@nvidia.com>
This change refactors the use of the symlink filter to make it extendible.
A blocked filter can be set on the Tegra CSV discoverer to ensure that the correct
symlink libraries are filtered out. Here, globs can be used to select mulitple libraries,
and a **/ prefix on the globs indicates that the pattern that follows is only applied to
the filename of the symlink entry in the CSV file.
A --csv.ignore-pattern command line argument is added to the nvidia-ctk cdi generate
command that allows this to be set.
Signed-off-by: Evan Lezar <elezar@nvidia.com>
This change improves the testibility of the CSV discoverer.
This is done by adding injection points for mocks for library discovery and
symlink resolution.
Note that this highlights a bug in the current implementation where the
library filter causes valid symlinks to be skipped.
Signed-off-by: Evan Lezar <elezar@nvidia.com>
This change adds a "required" option to the new toml config
that controls whether a default config is returned or not.
This is useful from the NVIDIA Container Runtime Hook, where
/run/driver/nvidia/etc/nvidia-container-runtime/config.toml
is checked before the standard path.
This fixes a bug where the default config was always applied
when this config was not used.
See https://github.com/NVIDIA/nvidia-container-toolkit/issues/106
Signed-off-by: Evan Lezar <elezar@nvidia.com>
This change adds a UsesNVGPUModule function that checks whether the nvgpu
kernel module is used by NVML. This allows for more robust detection of
Tegra-based platforms where libnvidia-ml.so is supported to enumerate the
iGPU.
Signed-off-by: Evan Lezar <elezar@nvidia.com>
This change introduced a config.Toml type that is used as the base for
config file processing and manipulation. This ensures that configs --
including commented values -- can be handled consistently.
Signed-off-by: Evan Lezar <elezar@nvidia.com>
This change ensures that the Config structs from internal.Config
are used for the NVIDIA Container Runtime Hook config too.
Signed-off-by: Evan Lezar <elezar@nvidia.com>
In order to properly handle systems with both iGPU and dGPU
drivers included, we skip "sym" mount specifications which
refer to .so or .so.[1-9] files.
Signed-off-by: Evan Lezar <elezar@nvidia.com>
This change explicitly generates a CDI specification from
the supplied CSV files when cdi mode is detected. This
ensures consistency between the behaviour on Tegra-based
systems.
Signed-off-by: Evan Lezar <elezar@nvidia.com>
Since the incoming OCI spec has already been parsed and used to
construct a CUDA image representation, pass this to the CSV
modifier constructor instead of re-creating an image representation.
Signed-off-by: Evan Lezar <elezar@nvidia.com>
This change sets the default CDI spec dirs at a config level instead
of when a CDI runtime modifier is constructed. This makes this setting
consistent with other options such as the nvidia-ctk path.
Signed-off-by: Evan Lezar <elezar@nvidia.com>
This change ensures that the nvidia-ctk config default command
generates a config file that is compatible with the official documentation
to, for example, disable cgroups in the NVIDIA Container CLI.
This requires that whitespace around comments is stripped before outputing the
contets.
This also adds an option to load a config and modify it in-place instead. This can
be triggered as a post-install step, for example.
Signed-off-by: Evan Lezar <elezar@nvidia.com>
This changes splits the functionality in the internal system package
into two packages: one for dealing with devices and one for dealing
with kernel modules. This removes ambiguity around the meaning of
driver / device roots in each case.
In each case, a root can be specified where device nodes are created
or kernel modules loaded.
Signed-off-by: Evan Lezar <elezar@nvidia.com>
