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| author | Thiago Jung Bauermann <bauerman@linux.ibm.com> | 2019-07-04 15:57:34 -0300 |
|---|---|---|
| committer | Mimi Zohar <zohar@linux.ibm.com> | 2019-08-05 18:39:56 -0400 |
| commit | c8424e776b093280d3fdd104d850706b3b229ac8 (patch) | |
| tree | 3f14381fe576439fa1fa94736b67d1015c40752d /init | |
| parent | b36f281f4a314de4be0a51d6511b794691f8a244 (diff) | |
| download | linux-c8424e776b093280d3fdd104d850706b3b229ac8.tar.gz linux-c8424e776b093280d3fdd104d850706b3b229ac8.tar.bz2 linux-c8424e776b093280d3fdd104d850706b3b229ac8.zip | |
MODSIGN: Export module signature definitions
IMA will use the module_signature format for append signatures, so export
the relevant definitions and factor out the code which verifies that the
appended signature trailer is valid.
Also, create a CONFIG_MODULE_SIG_FORMAT option so that IMA can select it
and be able to use mod_check_sig() without having to depend on either
CONFIG_MODULE_SIG or CONFIG_MODULES.
s390 duplicated the definition of struct module_signature so now they can
use the new <linux/module_signature.h> header instead.
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.ibm.com>
Acked-by: Jessica Yu <jeyu@kernel.org>
Reviewed-by: Philipp Rudo <prudo@linux.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/init/Kconfig b/init/Kconfig index bd7d650d4a99..2dca877c9ed7 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1930,6 +1930,10 @@ config BASE_SMALL default 0 if BASE_FULL default 1 if !BASE_FULL +config MODULE_SIG_FORMAT + def_bool n + select SYSTEM_DATA_VERIFICATION + menuconfig MODULES bool "Enable loadable module support" option modules @@ -2007,7 +2011,7 @@ config MODULE_SRCVERSION_ALL config MODULE_SIG bool "Module signature verification" depends on MODULES - select SYSTEM_DATA_VERIFICATION + select MODULE_SIG_FORMAT help Check modules for valid signatures upon load: the signature is simply appended to the module. For more information see |