From 5aca284210ce827f780ea2f4f9c6ab8d6e2d6648 Mon Sep 17 00:00:00 2001
From: "Darrick J. Wong" <darrick.wong@oracle.com>
Date: Mon, 1 Jul 2019 08:25:34 -0700
Subject: vfs: create a generic checking and prep function for FS_IOC_SETFLAGS

Create a generic function to check incoming FS_IOC_SETFLAGS flag values
and later prepare the inode for updates so that we can standardize the
implementations that follow ext4's flag values.

Note that the efivarfs implementation no longer fails a no-op SETFLAGS
without CAP_LINUX_IMMUTABLE since that's the behavior in ext*.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: David Sterba <dsterba@suse.com>
Reviewed-by: Bob Peterson <rpeterso@redhat.com>
---
 include/linux/fs.h | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'include/linux')

diff --git a/include/linux/fs.h b/include/linux/fs.h
index f7fdfe93e25d..41d5175ffdd7 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -3546,4 +3546,7 @@ static inline struct sock *io_uring_get_socket(struct file *file)
 }
 #endif
 
+int vfs_ioc_setflags_prepare(struct inode *inode, unsigned int oldflags,
+			     unsigned int flags);
+
 #endif /* _LINUX_FS_H */
-- 
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