[PATCH v12 02/25] LSM: Create and manage the lsmblob data structure.

Mimi Zohar zohar at linux.ibm.com
Thu Dec 19 21:11:31 UTC 2019


On Mon, 2019-12-16 at 14:35 -0800, Casey Schaufler wrote:
> When more than one security module is exporting data to
> audit and networking sub-systems a single 32 bit integer
> is no longer sufficient to represent the data. Add a
> structure to be used instead.
> 
> The lsmblob structure is currently an array of
> u32 "secids". There is an entry for each of the
> security modules built into the system that would
> use secids if active. The system assigns the module
> a "slot" when it registers hooks. If modules are
> compiled in but not registered there will be unused
> slots.
> 
> A new lsm_id structure, which contains the name
> of the LSM and its slot number, is created. There
> is an instance for each LSM, which assigns the name
> and passes it to the infrastructure to set the slot.
> 
> Reviewed-by: John Johansen <john.johansen at canonical.com>
> Signed-off-by: Casey Schaufler <casey at schaufler-ca.com>
> ---
>  include/linux/lsm_hooks.h  | 12 ++++++--
>  include/linux/security.h   | 58 ++++++++++++++++++++++++++++++++++++++
>  security/apparmor/lsm.c    |  7 ++++-
>  security/commoncap.c       |  7 ++++-
>  security/loadpin/loadpin.c |  8 +++++-
>  security/safesetid/lsm.c   |  8 +++++-
>  security/security.c        | 28 ++++++++++++++----
>  security/selinux/hooks.c   |  8 +++++-
>  security/smack/smack_lsm.c |  7 ++++-
>  security/tomoyo/tomoyo.c   |  8 +++++-
>  security/yama/yama_lsm.c   |  7 ++++-
>  11 files changed, 142 insertions(+), 16 deletions(-)

security/lockdown/lockdown.c is missing.  I'm getting a compiler
error.

Mimi



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