Re: [PATCH] fs: Return raw xattr for security.* if there is size disagreement with LSMs
From: Paul Moore <paul@paul-moore.com>
Date: 2021-06-18 03:18:43
Also in:
linux-fsdevel, linux-security-module, lkml, selinux
On Thu, Jun 17, 2021 at 11:28 AM Mimi Zohar [off-list ref] wrote:
On Thu, 2021-06-17 at 07:09 +0000, Roberto Sassu wrote:
...
quoted
An alternative would be to do the EVM verification twice if the first time didn't succeed (with vfs_getxattr_alloc() and with the new function that behaves like vfs_getxattr()).Unfortunately, I don't see an alternative.
... and while unfortunate, the impact should be non-existant if you are using the right tools to label files or ensuring that you are formatting labels properly if doing it by hand. Handling a corner case is good, but I wouldn't add a lot of code complexity trying to optimize it. -- paul moore www.paul-moore.com