diff options
| -rw-r--r-- | security/integrity/ima/Kconfig | 18 | ||||
| -rw-r--r-- | security/integrity/ima/ima_api.c | 3 | ||||
| -rw-r--r-- | security/integrity/ima/ima_init.c | 17 | ||||
| -rw-r--r-- | security/integrity/integrity.h | 8 |
4 files changed, 44 insertions, 2 deletions
diff --git a/security/integrity/ima/Kconfig b/security/integrity/ima/Kconfig index e099875643c5..b0840f9a552f 100644 --- a/security/integrity/ima/Kconfig +++ b/security/integrity/ima/Kconfig @@ -131,3 +131,21 @@ config IMA_TRUSTED_KEYRING help This option requires that all keys added to the .ima keyring be signed by a key on the system trusted keyring. + +config IMA_LOAD_X509 + bool "Load X509 certificate onto the '.ima' trusted keyring" + depends on IMA_TRUSTED_KEYRING + default n + help + File signature verification is based on the public keys + loaded on the .ima trusted keyring. These public keys are + X509 certificates signed by a trusted key on the + .system keyring. This option enables X509 certificate + loading from the kernel onto the '.ima' trusted keyring. + +config IMA_X509_PATH + string "IMA X509 certificate path" + depends on IMA_LOAD_X509 + default "/etc/keys/x509_ima.der" + help + This option defines IMA X509 certificate path. diff --git a/security/integrity/ima/ima_api.c b/security/integrity/ima/ima_api.c index a99eb6d4bc09..b0dc922d8be3 100644 --- a/security/integrity/ima/ima_api.c +++ b/security/integrity/ima/ima_api.c @@ -173,8 +173,7 @@ int ima_get_action(struct inode *inode, int mask, int function) { int flags = IMA_MEASURE | IMA_AUDIT | IMA_APPRAISE; - if (!ima_appraise) - flags &= ~IMA_APPRAISE; + flags &= ima_policy_flag; return ima_match_policy(inode, function, mask, flags); } diff --git a/security/integrity/ima/ima_init.c b/security/integrity/ima/ima_init.c index 9164fc8cac84..5e4c29d174ee 100644 --- a/security/integrity/ima/ima_init.c +++ b/security/integrity/ima/ima_init.c @@ -24,6 +24,12 @@ #include <crypto/hash_info.h> #include "ima.h" +#ifdef CONFIG_IMA_X509_PATH +#define IMA_X509_PATH CONFIG_IMA_X509_PATH +#else +#define IMA_X509_PATH "/etc/keys/x509_ima.der" +#endif + /* name for boot aggregate entry */ static const char *boot_aggregate_name = "boot_aggregate"; int ima_used_chip; @@ -91,6 +97,17 @@ err_out: return result; } +#ifdef CONFIG_IMA_LOAD_X509 +void __init ima_load_x509(void) +{ + int unset_flags = ima_policy_flag & IMA_APPRAISE; + + ima_policy_flag &= ~unset_flags; + integrity_load_x509(INTEGRITY_KEYRING_IMA, IMA_X509_PATH); + ima_policy_flag |= unset_flags; +} +#endif + int __init ima_init(void) { u8 pcr_i[TPM_DIGEST_SIZE]; diff --git a/security/integrity/integrity.h b/security/integrity/integrity.h index 1057abbd31cd..caa1f6ca72e9 100644 --- a/security/integrity/integrity.h +++ b/security/integrity/integrity.h @@ -162,6 +162,14 @@ static inline int asymmetric_verify(struct key *keyring, const char *sig, } #endif +#ifdef CONFIG_IMA_LOAD_X509 +void __init ima_load_x509(void); +#else +static inline void ima_load_x509(void) +{ +} +#endif + #ifdef CONFIG_INTEGRITY_AUDIT /* declarations */ void integrity_audit_msg(int audit_msgno, struct inode *inode, |