Mimi Zohar 143f450c6c ima: detect changes to the backing overlay file ... commit b836c4d29f2744200b2af41e14bf50758dddc818 upstream. Commit 18b44bc5a6 ("ovl: Always reevaluate the file signature for IMA") forced signature re-evaulation on every file access. Instead of always re-evaluating the file's integrity, detect a change to the backing file, by comparing the cached file metadata with the backing file's metadata. Verifying just the i_version has not changed is insufficient. In addition save and compare the i_ino and s_dev as well. Reviewed-by: Amir Goldstein <amir73il@gmail.com> Tested-by: Eric Snowberg <eric.snowberg@oracle.com> Tested-by: Raul E Rangel <rrangel@chromium.org> Cc: stable@vger.kernel.org Signed-off-by: Mimi Zohar <zohar@linux.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-11-28 17:07:12 +00:00
..
evm	…
ima	ima: detect changes to the backing overlay file	2023-11-28 17:07:12 +00:00
platform_certs	…
Kconfig	…
Makefile	…
digsig.c	…
digsig_asymmetric.c	…
iint.c	…
integrity.h	ima: detect changes to the backing overlay file	2023-11-28 17:07:12 +00:00
integrity_audit.c	…