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Wed, 19 Aug 2026 16:45:36 -0700 (PDT) Received: from [127.0.1.1] ([2a09:bac6:947f:3af::5e:75]) by smtp.gmail.com with ESMTPSA id 006d021491bc7-6b13c90d160sm3470216eaf.0.2026.08.19.16.45.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Aug 2026 16:45:36 -0700 (PDT) From: Frederick Lawler Date: Wed, 19 Aug 2026 18:45:22 -0500 Subject: [PATCH v2 1/2] configfs: move CONFIGFS_MAGIC definition to magic.h Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260819-configfs-v2-1-cb6e65d11589@cloudflare.com> References: <20260819-configfs-v2-0-cb6e65d11589@cloudflare.com> In-Reply-To: <20260819-configfs-v2-0-cb6e65d11589@cloudflare.com> To: Andreas Hindborg , Breno Leitao , Mimi Zohar , Roberto Sassu , Dmitry Kasatkin , Eric Snowberg , Paul Moore , James Morris , "Serge E. Hallyn" Cc: linux-kernel@vger.kernel.org, linux-integrity@vger.kernel.org, linux-security-module@vger.kernel.org, kernel-team@cloudflare.com, Frederick Lawler X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1753; i=fred@cloudflare.com; h=from:subject:message-id; bh=4Dr8FUckZZs6x07b+xsKvc6HgeTnce7Z1vxgvZfvoJU=; b=owEBbQKS/ZANAwAKAasltHYDktNtAcsmYgBqhkAbRsSTJS9G2sPxjiFu59N81pvJcvRyNEY2j jNVCOkKGpuJAjMEAAEKAB0WIQTLNBqMVmu1PHvjOe2rJbR2A5LTbQUCaoZAGwAKCRCrJbR2A5LT bX4xD/9BUVDi6eSCaYdVaU0HrQZZklUbYQ3Qcv91ER5zNZ4CBqiQh8ih2Bd7N83O5qB+tLtXn+h 2RQyapH/2XBDtNxiggB/XATmp7tiGbmGR9qvlEd0lYu+A+iqm6GRh1MgROUnULnSX3hGuDYGtia hqyddIctgRgI9T1Xko/lPHQGO20QXM3muiamVOWBGMU0woRSHLTH4yuYEYvhIxfQCYBKyTJ/YmY xUQaHkPqxnFkW3e/UDDNPC9vkyg1yaKpTOfpegRYQ0cAzArIaGyM1BYiqNjtOTeN2Q+gRvM+EeK 9PtCaZ6dlk/iEMSRnMWUR9Rx2NjQk9HnE6IGqSVQMYk4/pmKbFE+CbztStQZkWsJmi9xMwxQ3sN yKT0fIcKgw7hyZbA/Qd65uIuPIrvWOLmopNOtGBmOgHn/HBgmt7q43IMegXstFonHqZwCdP1VTN 6IsPKmbghn6rSB4Jwmu1YwJoBCLasPlbWYzgSKKh+/e+8Cy3um6fpvDQnde+RaN8G+UyKDKsXAq LLv5X+AKHnwCN4RARDjW5KAyr/tnsektIDaeKa0Q3GeHsVYckBpOuh+M79B5qC7CH5wFvZeeE/r E9dtdt0WBvJB58nZhSTpz7A6tVeO0he2gfYEDSCYpbHbdMqkp9FT9L83V+NhE7Q8YGapa0FgPYS Hz3gO886SmRWwCg== X-Developer-Key: i=fred@cloudflare.com; a=openpgp; fpr=CB341A8C566BB53C7BE339EDAB25B4760392D36D IMA shouldn't measure or appraise configfs, but currently does because it's missing from the default exclusion policies. Move CONFIGFS_MAGIC to magic.h to expose the file system's magic to IMA, as well as other userland applications. Suggested-by: Mimi Zohar Signed-off-by: Frederick Lawler --- fs/configfs/mount.c | 4 +--- include/uapi/linux/magic.h | 1 + 2 files changed, 2 insertions(+), 3 deletions(-) diff --git a/fs/configfs/mount.c b/fs/configfs/mount.c index 4929f343118946eaa55a539db4192e9c6621a8dc..d8cac1cbf3bd573a0549f2f044714c9d669205a4 100644 --- a/fs/configfs/mount.c +++ b/fs/configfs/mount.c @@ -9,6 +9,7 @@ */ #include +#include #include #include #include @@ -19,9 +20,6 @@ #include #include "configfs_internal.h" -/* Random magic number */ -#define CONFIGFS_MAGIC 0x62656570 - static struct vfsmount *configfs_mount = NULL; struct kmem_cache *configfs_dir_cachep; static int configfs_mnt_count = 0; diff --git a/include/uapi/linux/magic.h b/include/uapi/linux/magic.h index 4f2da935a76ccae6e1c3310b2fae5379186548b8..d5b9958ddfaae90b270b66fe7853c5a3d49ce739 100644 --- a/include/uapi/linux/magic.h +++ b/include/uapi/linux/magic.h @@ -8,6 +8,7 @@ #define AUTOFS_SUPER_MAGIC 0x0187 #define CEPH_SUPER_MAGIC 0x00c36400 #define CODA_SUPER_MAGIC 0x73757245 +#define CONFIGFS_MAGIC 0x62656570 /* some random number */ #define CRAMFS_MAGIC 0x28cd3d45 /* some random number */ #define CRAMFS_MAGIC_WEND 0x453dcd28 /* magic number with the wrong endianess */ #define DEBUGFS_MAGIC 0x64626720 -- 2.43.0