linux-kernel - Re: [PATCH v2 2/3] evm: add support to disable EVM on unsupported filesystems

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Date: Tue, 19 Dec 2023 14:09:58 -0500
From: Mimi Zohar <zohar@...ux.ibm.com>
To: linux-unionfs@...r.kernel.org
Cc: linux-integrity@...r.kernel.org, linux-kernel@...r.kernel.org,
        Amir
 Goldstein <amir73il@...il.com>,
        Christian Brauner <brauner@...nel.org>,
        Seth Forshee <sforshee@...nel.org>,
        Roberto Sassu
 <roberto.sassu@...weicloud.com>
Subject: Re: [PATCH v2 2/3] evm: add support to disable EVM on unsupported
 filesystems

On Tue, 2023-12-19 at 12:52 -0500, Mimi Zohar wrote:

> diff --git a/include/linux/fs.h b/include/linux/fs.h
> index 98b7a7a8c42e..db9350a734ef 100644
> --- a/include/linux/fs.h
> +++ b/include/linux/fs.h
> @@ -1164,6 +1164,7 @@ extern int send_sigurg(struct fown_struct *fown);
>  #define SB_I_USERNS_VISIBLE		0x00000010 /* fstype already mounted */
>  #define SB_I_IMA_UNVERIFIABLE_SIGNATURE	0x00000020
>  #define SB_I_UNTRUSTED_MOUNTER		0x00000040
> +#define SB_I_EVM_UNSUPPORTED		0x00000050

This needs to be fixed.

Mimi

>  
>  #define SB_I_SKIP_SYNC	0x00000100	/* Skip superblock at global sync */
>  #define SB_I_PERSB_BDI	0x00000200	/* has a per-sb bdi */
> diff --git a/security/integrity/evm/evm_main.c b/security/integrity/evm/evm_main.c