ima: add support for measuring and appraising firmware
The "security: introduce kernel_fw_from_file hook" patch defined a
new security hook to evaluate any loaded firmware that wasn't built
into the kernel.
This patch defines ima_fw_from_file(), which is called from the new
security hook, to measure and/or appraise the loaded firmware's
integrity.
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
diff --git a/security/security.c b/security/security.c
index 35d37d0..e41b1a8 100644
--- a/security/security.c
+++ b/security/security.c
@@ -847,7 +847,12 @@
int security_kernel_fw_from_file(struct file *file, char *buf, size_t size)
{
- return security_ops->kernel_fw_from_file(file, buf, size);
+ int ret;
+
+ ret = security_ops->kernel_fw_from_file(file, buf, size);
+ if (ret)
+ return ret;
+ return ima_fw_from_file(file, buf, size);
}
EXPORT_SYMBOL_GPL(security_kernel_fw_from_file);