From 5aca284210ce827f780ea2f4f9c6ab8d6e2d6648 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" 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 Reviewed-by: Jan Kara Reviewed-by: Christoph Hellwig Acked-by: David Sterba Reviewed-by: Bob Peterson --- fs/ext4/ioctl.c | 13 +++---------- 1 file changed, 3 insertions(+), 10 deletions(-) (limited to 'fs/ext4') diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index e486e49b31ed..272b6e44191b 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -289,16 +289,9 @@ static int ext4_ioctl_setflags(struct inode *inode, /* The JOURNAL_DATA flag is modifiable only by root */ jflag = flags & EXT4_JOURNAL_DATA_FL; - /* - * The IMMUTABLE and APPEND_ONLY flags can only be changed by - * the relevant capability. - * - * This test looks nicer. Thanks to Pauline Middelink - */ - if ((flags ^ oldflags) & (EXT4_APPEND_FL | EXT4_IMMUTABLE_FL)) { - if (!capable(CAP_LINUX_IMMUTABLE)) - goto flags_out; - } + err = vfs_ioc_setflags_prepare(inode, oldflags, flags); + if (err) + goto flags_out; /* * The JOURNAL_DATA flag can only be changed by -- cgit v1.2.3