diff options
| author | Thiago Jung Bauermann <bauerman@linux.ibm.com> | 2019-06-27 23:19:28 -0300 |
|---|---|---|
| committer | Mimi Zohar <zohar@linux.ibm.com> | 2019-08-05 18:40:21 -0400 |
| commit | 9044d627fd18f9fca49b62d4619ee14914b91464 (patch) | |
| tree | db035dc7773f8b8509f87115f510ed340aef7b52 /security/integrity/ima/ima.h | |
| parent | cf38fed1e183dd2410f62d49ae635fe593082f0c (diff) | |
ima: Add modsig appraise_type option for module-style appended signatures
Introduce the modsig keyword to the IMA policy syntax to specify that
a given hook should expect the file to have the IMA signature appended
to it. Here is how it can be used in a rule:
appraise func=KEXEC_KERNEL_CHECK appraise_type=imasig|modsig
With this rule, IMA will accept either a signature stored in the extended
attribute or an appended signature.
For now, the rule above will behave exactly the same as if
appraise_type=imasig was specified. The actual modsig implementation
will be introduced separately.
Suggested-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.ibm.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Diffstat (limited to 'security/integrity/ima/ima.h')
| -rw-r--r-- | security/integrity/ima/ima.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/security/integrity/ima/ima.h b/security/integrity/ima/ima.h index 011b91c79351..e21b06942858 100644 --- a/security/integrity/ima/ima.h +++ b/security/integrity/ima/ima.h @@ -302,6 +302,15 @@ static inline int ima_read_xattr(struct dentry *dentry, #endif /* CONFIG_IMA_APPRAISE */ +#ifdef CONFIG_IMA_APPRAISE_MODSIG +bool ima_hook_supports_modsig(enum ima_hooks func); +#else +static inline bool ima_hook_supports_modsig(enum ima_hooks func) +{ + return false; +} +#endif /* CONFIG_IMA_APPRAISE_MODSIG */ + /* LSM based policy rules require audit */ #ifdef CONFIG_IMA_LSM_RULES |