Add driverdog to link and load kernel modules at runtime #1867
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etungsten
approved these changes
Dec 14, 2021
packages/release/Cargo.toml
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| ca-certificates = { path = "../ca-certificates" } | ||
| binutils = { path = "../binutils" } |
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super nit: should keep this sorted.
Suggested change
| ca-certificates = { path = "../ca-certificates" } | |
| binutils = { path = "../binutils" } | |
| binutils = { path = "../binutils" } | |
| ca-certificates = { path = "../ca-certificates" } |
bcressey
reviewed
Dec 16, 2021
| RefuseManualStart=true | ||
| RefuseManualStop=true | ||
| After=link-kernel-modules.service | ||
| Wants=link-kernel-modules.service |
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nit: could strengthen this dependency -
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| Wants=link-kernel-modules.service | |
| Requires=link-kernel-modules.service |
sources/driverdog/src/main.rs
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| // If the target module set was given, link the kernel modules in it | ||
| if let Some(target) = target { | ||
| let driver_config = modules_sets | ||
| .get(&target) | ||
| .context(error::MissingModuleSet { target })?; | ||
| link_modules(&driver_config, &kernel_version)? | ||
| } | ||
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| // Link all the modules sets if no target module was given | ||
| for driver_config in modules_sets.values() { | ||
| link_modules(&driver_config, &kernel_version)?; | ||
| } |
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Looks like we always link all module sets, even if we pass the option for a specific set. The load modules function has the same issue.
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Good catch, missing else block? (Edit: Resolved)
webern
approved these changes
Dec 30, 2021
sources/driverdog/src/main.rs
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Comment on lines
109
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120
| // If the target module set was given, link the kernel modules in it | ||
| if let Some(target) = target { | ||
| let driver_config = modules_sets | ||
| .get(&target) | ||
| .context(error::MissingModuleSet { target })?; | ||
| link_modules(&driver_config, &kernel_version)? | ||
| } | ||
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| // Link all the modules sets if no target module was given | ||
| for driver_config in modules_sets.values() { | ||
| link_modules(&driver_config, &kernel_version)?; | ||
| } |
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Good catch, missing else block? (Edit: Resolved)
Binutils provides the ld linker, required to link proprietary kernel modules at runtime. Signed-off-by: Arnaldo Garcia Rincon <agarrcia@amazon.com>
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Forced push includes rebase to resolve conflicts |
driverdog is a tool to link kernel modules at runtime, given a
configuration. The configuration must be provided per driver vendor, and
it is created at runtime by the tmpfilesd daemon, using a file
from the %{_cross_factorydir} directory.
Signed-off-by: Arnaldo Garcia Rincon <agarrcia@amazon.com>
arnaldo2792
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webern
approved these changes
Jan 11, 2022
bcressey
approved these changes
Jan 11, 2022
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Issue number:
N / A
Description of changes:
Related to #1799 , that PR is quite big. I'm taking some of the commits in that PR as their individual PR.
We can't ship kernel modules linked against GPL code (i. e. proprietary kernel modules), doing so violates the GPL license under which the kernel is released. Instead, Bottlerocket images with proprietary kernel modules will link and load the kernel modules at runtime using
driverdog.binutilsis built as part of thereleasepackage, but it isn't included in any variant. Instead, packages that depend on it will include it in their spec file, as follows:Testing done:
In the new variant created in #1799:
Shipped a drivers configuration file that looks as follows, along with required objects in the OS image:
Validated the kernel modules were linked and loaded:
Terms of contribution:
By submitting this pull request, I agree that this contribution is dual-licensed under the terms of both the Apache License, version 2.0, and the MIT license.