fs_context: drop the unused lsm_flags member

This isn't ever used by VFS now, and it couldn't even work. Any FS that uses the SECURITY_LSM_NATIVE_LABELS flag needs to also process the value returned back from the LSM, so it needs to do its security_sb_set_mnt_opts() call on its own anyway. Signed-off-by: Ondrej Mosnacek <[email protected]> Signed-off-by: Christian Brauner (Microsoft) <[email protected]>
dzndl · Mar 16, 2023 · 4e04143 · 4e04143
1 parent 74e60b8
commit 4e04143
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Showing 4 changed files with 1 addition and 6 deletions.
diff --git a/Documentation/filesystems/mount_api.rst b/Documentation/filesystems/mount_api.rst
@@ -79,7 +79,6 @@ context.  This is represented by the fs_context structure::
 		unsigned int		sb_flags;
 		unsigned int		sb_flags_mask;
 		unsigned int		s_iflags;
-		unsigned int		lsm_flags;
 		enum fs_context_purpose	purpose:8;
 		...
 	};

diff --git a/fs/nfs/super.c b/fs/nfs/super.c
@@ -1274,9 +1274,6 @@ int nfs_get_tree_common(struct fs_context *fc)
 		if (ctx->clone_data.sb->s_flags & SB_SYNCHRONOUS)
 			fc->sb_flags |= SB_SYNCHRONOUS;
 
-	if (server->caps & NFS_CAP_SECURITY_LABEL)
-		fc->lsm_flags |= SECURITY_LSM_NATIVE_LABELS;
-
 	/* Get a superblock - note that we may end up sharing one that already exists */
 	fc->s_fs_info = server;
 	s = sget_fc(fc, compare_super, nfs_set_super);

diff --git a/include/linux/fs_context.h b/include/linux/fs_context.h
@@ -104,7 +104,6 @@ struct fs_context {
 	unsigned int		sb_flags;	/* Proposed superblock flags (SB_*) */
 	unsigned int		sb_flags_mask;	/* Superblock flags that were changed */
 	unsigned int		s_iflags;	/* OR'd with sb->s_iflags */
-	unsigned int		lsm_flags;	/* Information flags from the fs to the LSM */
 	enum fs_context_purpose	purpose:8;
 	enum fs_context_phase	phase:8;	/* The phase the context is in */
 	bool			need_free:1;	/* Need to call ops->free() */

diff --git a/include/linux/security.h b/include/linux/security.h
@@ -68,7 +68,7 @@ struct watch_notification;
 /* If capable is being called by a setid function */
 #define CAP_OPT_INSETID BIT(2)
 
-/* LSM Agnostic defines for fs_context::lsm_flags */
+/* LSM Agnostic defines for security_sb_set_mnt_opts() flags */
 #define SECURITY_LSM_NATIVE_LABELS	1
 
 struct ctl_table;