[RFC PATCH v2 31/34] ima, evm: move initcalls to the LSM framework

[Paul Moore]

On Mon, Jul 21, 2025 at 7:24 PM Paul Moore <paul at paul-moore.com> wrote:
>
> This patch converts IMA and EVM to use the LSM frameworks's initcall
> mechanism.  There was a minor challenge in this conversion that wasn't
> seen when converting the other LSMs brought about by the resource
> sharing between the two related, yes independent IMA and EVM LSMs.
> This was resolved by registering the same initcalls for each LSM and
> including code in each registered initcall to ensure it only executes
> once during each boot.
>
> It is worth mentioning that this patch does not touch any of the
> "platform certs" code that lives in the security/integrity/platform_certs
> directory as the IMA/EVM maintainers have assured me that this code is
> unrelated to IMA/EVM, despite the location, and will be moved to a more
> relevant subsystem in the future.
>
> Signed-off-by: Paul Moore <paul at paul-moore.com>
> ---
>  security/integrity/Makefile       |  2 +-
>  security/integrity/evm/evm_main.c |  6 ++---
>  security/integrity/iint.c         |  4 +--
>  security/integrity/ima/ima_main.c |  6 ++---
>  security/integrity/initcalls.c    | 41 +++++++++++++++++++++++++++++++
>  security/integrity/initcalls.h    | 13 ++++++++++
>  6 files changed, 63 insertions(+), 9 deletions(-)
>  create mode 100644 security/integrity/initcalls.c
>  create mode 100644 security/integrity/initcalls.h

...

> diff --git a/security/integrity/initcalls.h b/security/integrity/initcalls.h
> new file mode 100644
> index 000000000000..5511c62f8166
> --- /dev/null
> +++ b/security/integrity/initcalls.h
> @@ -0,0 +1,13 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +
> +#ifndef PLATFORM_CERTS_INITCALLS_H
> +#define PLATFORM_CERTS_INITCALLS_H

Ooops, the above two lines can obviously be removed, vestiges of the
previous revision.

> +int integrity_fs_init(void);
> +
> +int init_ima(void);
> +int init_evm(void);
> +
> +int integrity_late_init(void);
> +
> +#endif
> --
> 2.50.1

-- 
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