LSM: Multiple LSM mount options
From: | Casey Schaufler <casey-AT-schaufler-ca.com> | |
To: | casey-AT-schaufler-ca.com, paul-AT-paul-moore.com, eparis-AT-redhat.com, linux-security-module-AT-vger.kernel.org | |
Subject: | [PATCH v2 0/2] LSM: Multiple LSM mount options | |
Date: | Thu, 25 Sep 2025 10:12:06 -0700 | |
Message-ID: | <20250925171208.5997-1-casey@schaufler-ca.com> | |
Cc: | jmorris-AT-namei.org, serge-AT-hallyn.com, keescook-AT-chromium.org, john.johansen-AT-canonical.com, penguin-kernel-AT-i-love.sakura.ne.jp, stephen.smalley.work-AT-gmail.com, linux-kernel-AT-vger.kernel.org, selinux-AT-vger.kernel.org | |
Archive-link: | Article |
Linux Security Module (LSM) that support mount options, currently SELinux and Smack, allocate their own data for those options. This patch set moves the handling of mount option data out of the individual LSMs and into the LSM infrastructure. This allows for multiple LSMs to support mount options at the same time. https://github.com/cschaufler/lsm-stacking#mount-opts-6.1... v2: Significant rewrite to move allocations out of the LSMs. Casey Schaufler (2): LSM: Add mount opts blob size tracking LSM: Infrastructure management of the mnt_opts security blob include/linux/lsm_hooks.h | 1 + security/security.c | 44 ++++++++++++++++++ security/selinux/hooks.c | 76 ++++++++++--------------------- security/selinux/include/objsec.h | 8 ++++ security/smack/smack.h | 8 ++++ security/smack/smack_lsm.c | 45 +++++------------- 6 files changed, 97 insertions(+), 85 deletions(-) -- 2.51.0