ima: define kernel parameter 'ima_template=' to change configured default

This patch allows users to specify from the kernel command line the
template descriptor, among those defined, that will be used to generate
and display measurement entries. If an user specifies a wrong template,
IMA reverts to the template descriptor set in the kernel configuration.

Signed-off-by: Roberto Sassu <roberto.sassu@polito.it>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 1a036cd972fb..2b78cb55ac34 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1190,6 +1190,11 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                         programs exec'd, files mmap'd for exec, and all files
                         opened for read by uid=0.
 
+        ima_template=   [IMA]
+                        Select one of defined IMA measurements template formats.
+                        Formats: { "ima" | "ima-ng" }
+                        Default: "ima-ng"
+
         init=           [KNL]
                         Format: <full_path>
                         Run specified binary instead of /sbin/init as init