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| author |   Matthias Maennich <maennich@google.com> | 2019-09-06 11:32:29 +0100 |
|---|---|---|
| committer |   Jessica Yu <jeyu@kernel.org> | 2019-09-10 10:30:27 +0200 |
| commit | 3d52ec5e5d0dd7f8ca96a68c6756bd96e58b716b (patch) | |
| tree | 51b5da97980203a40b9b1393ec5da9157d4d3215 /init | |
| parent | modpost: add support for symbol namespaces (diff) | |
| download | wireguard-linux-3d52ec5e5d0dd7f8ca96a68c6756bd96e58b716b.tar.xz wireguard-linux-3d52ec5e5d0dd7f8ca96a68c6756bd96e58b716b.zip | |
module: add config option MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS
If MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS is enabled (default=n), the
requirement for modules to import all namespaces that are used by
the module is relaxed.
Enabling this option effectively allows (invalid) modules to be loaded
while only a warning is emitted.
Disabling this option keeps the enforcement at module loading time and
loading is denied if the module's imports are not satisfactory.
Reviewed-by: Martijn Coenen <maco@android.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Matthias Maennich <maennich@google.com>
Signed-off-by: Jessica Yu <jeyu@kernel.org>
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/init/Kconfig b/init/Kconfig index bd7d650d4a99..cc28561288a7 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -2119,6 +2119,19 @@ config MODULE_COMPRESS_XZ endchoice +config MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS + bool "Allow loading of modules with missing namespace imports" + help + Symbols exported with EXPORT_SYMBOL_NS*() are considered exported in + a namespace. A module that makes use of a symbol exported with such a + namespace is required to import the namespace via MODULE_IMPORT_NS(). + There is no technical reason to enforce correct namespace imports, + but it creates consistency between symbols defining namespaces and + users importing namespaces they make use of. This option relaxes this + requirement and lifts the enforcement when loading a module. + + If unsure, say N. + config TRIM_UNUSED_KSYMS bool "Trim unused exported kernel symbols" depends on MODULES && !UNUSED_SYMBOLS |