[v4] module: Introduce hash-based integrity checking

[PATCH v4 03/17] ima: efi: Drop unnecessary check for CONFIG_MODULE_SIG/CONFIG_KEXEC_SIG

Posted by Thomas Weißschuh 3 weeks, 3 days ago

When configuration settings are disabled the guarded functions are
defined as empty stubs, so the check is unnecessary.
The specific configuration option for set_module_sig_enforced() is
about to change and removing the checks avoids some later churn.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
---
 security/integrity/ima/ima_efi.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/security/integrity/ima/ima_efi.c b/security/integrity/ima/ima_efi.c
index 138029bfcce1..a35dd166ad47 100644
--- a/security/integrity/ima/ima_efi.c
+++ b/security/integrity/ima/ima_efi.c
@@ -68,10 +68,8 @@ static const char * const sb_arch_rules[] = {
 const char * const *arch_get_ima_policy(void)
 {
 	if (IS_ENABLED(CONFIG_IMA_ARCH_POLICY) && arch_ima_get_secureboot()) {
-		if (IS_ENABLED(CONFIG_MODULE_SIG))
-			set_module_sig_enforced();
-		if (IS_ENABLED(CONFIG_KEXEC_SIG))
-			set_kexec_sig_enforced();
+		set_module_sig_enforced();
+		set_kexec_sig_enforced();
 		return sb_arch_rules;
 	}
 	return NULL;

-- 
2.52.0

Re: [PATCH v4 03/17] ima: efi: Drop unnecessary check for CONFIG_MODULE_SIG/CONFIG_KEXEC_SIG

Posted by Nicolas Schier 21 hours ago

On Tue, Jan 13, 2026 at 01:28:47PM +0100, Thomas Weißschuh wrote:
> When configuration settings are disabled the guarded functions are
> defined as empty stubs, so the check is unnecessary.
> The specific configuration option for set_module_sig_enforced() is
> about to change and removing the checks avoids some later churn.
> 
> Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
> ---
>  security/integrity/ima/ima_efi.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 

Reviewed-by: Nicolas Schier <nsc@kernel.org>

-- 
Nicolas

Re: [PATCH v4 03/17] ima: efi: Drop unnecessary check for CONFIG_MODULE_SIG/CONFIG_KEXEC_SIG

Posted by Aaron Tomlin 1 week ago

On Tue, Jan 13, 2026 at 01:28:47PM +0100, Thomas Weißschuh wrote:
> When configuration settings are disabled the guarded functions are
> defined as empty stubs, so the check is unnecessary.
> The specific configuration option for set_module_sig_enforced() is
> about to change and removing the checks avoids some later churn.
> 
> Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
> ---
>  security/integrity/ima/ima_efi.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/security/integrity/ima/ima_efi.c b/security/integrity/ima/ima_efi.c
> index 138029bfcce1..a35dd166ad47 100644
> --- a/security/integrity/ima/ima_efi.c
> +++ b/security/integrity/ima/ima_efi.c
> @@ -68,10 +68,8 @@ static const char * const sb_arch_rules[] = {
>  const char * const *arch_get_ima_policy(void)
>  {
>  	if (IS_ENABLED(CONFIG_IMA_ARCH_POLICY) && arch_ima_get_secureboot()) {
> -		if (IS_ENABLED(CONFIG_MODULE_SIG))
> -			set_module_sig_enforced();
> -		if (IS_ENABLED(CONFIG_KEXEC_SIG))
> -			set_kexec_sig_enforced();
> +		set_module_sig_enforced();
> +		set_kexec_sig_enforced();
>  		return sb_arch_rules;
>  	}
>  	return NULL;
> 
> -- 
> 2.52.0
> 

Reviewed-by: Aaron Tomlin <atomlin@atomlin.com>

-- 
Aaron Tomlin