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configfs: move CONFIGFS_MAGIC definition to magic.h

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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 <zohar@linux.ibm.com>
Signed-off-by: Frederick Lawler <fred@cloudflare.com>
Acked-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
This commit is contained in:
Frederick Lawler 2026-08-19 18:45:22 -05:00 committed by Mimi Zohar
parent cee9395acd
commit ab84c31441
2 changed files with 2 additions and 3 deletions
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4
fs/configfs/mount.c
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@ -9,6 +9,7 @@
*/
#include <linux/fs.h>
#include <linux/magic.h>
#include <linux/module.h>
#include <linux/mount.h>
#include <linux/fs_context.h>
@ -19,9 +20,6 @@
#include <linux/configfs.h>
#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;

1
include/uapi/linux/magic.h
View File

@ -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