From 43b666622c60bc001f2f8a19f5f97946ff53a5cc Mon Sep 17 00:00:00 2001 From: Paul Moore Date: Tue, 1 Mar 2022 17:53:01 -0500 Subject: [PATCH] selinux: runtime disable is deprecated, add some ssleep() discomfort We deprecated the SELinux runtime disable functionality in Linux v5.6, and it is time to get a bit more serious about removing it. Add a five second sleep to anyone using it to help draw their attention to the deprecation and provide a URL which helps explain things in more detail, including how to add kernel command line parameters to some of the more popular Linux distributions. Acked-by: Casey Schaufler Signed-off-by: Paul Moore --- security/selinux/selinuxfs.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c index 097c6d866ec4..6568bc48cd3e 100644 --- a/security/selinux/selinuxfs.c +++ b/security/selinux/selinuxfs.c @@ -293,6 +293,8 @@ static ssize_t sel_write_disable(struct file *file, const char __user *buf, * kernel releases until eventually it is removed */ pr_err("SELinux: Runtime disable is deprecated, use selinux=0 on the kernel cmdline.\n"); + pr_err("SELinux: https://github.com/SELinuxProject/selinux-kernel/wiki/DEPRECATE-runtime-disable\n"); + ssleep(5); if (count >= PAGE_SIZE) return -ENOMEM;