path: root/Documentation/kernel-parameters.txt
diff options
authorMimi Zohar <zohar@linux.vnet.ibm.com>2015-06-11 20:48:33 -0400
committerMimi Zohar <zohar@linux.vnet.ibm.com>2015-06-16 08:18:45 -0400
commit24fd03c87695a76f0517df42a37e51b1597d2c8a (patch)
treea08107bb7ad12b472a5b1b60cea8770211113c31 /Documentation/kernel-parameters.txt
parent4351c294b8c1028077280f761e158d167b592974 (diff)
ima: update builtin policies
This patch defines a builtin measurement policy "tcb", similar to the existing "ima_tcb", but with additional rules to also measure files based on the effective uid and to measure files opened with the "read" mode bit set (eg. read, read-write). Changing the builtin "ima_tcb" policy could potentially break existing users. Instead of defining a new separate boot command line option each time the builtin measurement policy is modified, this patch defines a single generic boot command line option "ima_policy=" to specify the builtin policy and deprecates the use of the builtin ima_tcb policy. [The "ima_policy=" boot command line option is based on Roberto Sassu's "ima: added new policy type exec" patch.] Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com> Signed-off-by: Dr. Greg Wettstein <gw@idfusion.org> Cc: stable@vger.kernel.org
Diffstat (limited to 'Documentation/kernel-parameters.txt')
1 files changed, 9 insertions, 1 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index abc496f95220..807b765087d4 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1398,7 +1398,15 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
The list of supported hash algorithms is defined
in crypto/hash_info.h.
- ima_tcb [IMA]
+ ima_policy= [IMA]
+ The builtin measurement policy to load during IMA
+ setup. Specyfing "tcb" as the value, measures all
+ programs exec'd, files mmap'd for exec, and all files
+ opened with the read mode bit set by either the
+ effective uid (euid=0) or uid=0.
+ Format: "tcb"
+ ima_tcb [IMA] Deprecated. Use ima_policy= instead.
Load a policy which meets the needs of the Trusted
Computing Base. This means IMA will measure all
programs exec'd, files mmap'd for exec, and all files

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