On Jan 15, 2024 Roberto Sassu <[email protected]> wrote: > > In preparation for moving IMA and EVM to the LSM infrastructure, introduce > the inode_post_setattr hook. > > At inode_setattr hook, EVM verifies the file's existing HMAC value. At > inode_post_setattr, EVM re-calculates the file's HMAC based on the modified > file attributes and other file metadata. > > Other LSMs could similarly take some action after successful file attribute > change. > > The new hook cannot return an error and cannot cause the operation to be > reverted. > > Signed-off-by: Roberto Sassu <[email protected]> > Reviewed-by: Stefan Berger <[email protected]> > Reviewed-by: Mimi Zohar <[email protected]> > Acked-by: Casey Schaufler <[email protected]> > --- > fs/attr.c | 1 + > include/linux/lsm_hook_defs.h | 2 ++ > include/linux/security.h | 7 +++++++ > security/security.c | 16 ++++++++++++++++ > 4 files changed, 26 insertions(+)
Acked-by: Paul Moore <[email protected]> -- paul-moore.com
