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| author | Darrick J. Wong <darrick.wong@oracle.com> | 2019-07-01 17:25:34 +0200 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2019-07-01 17:25:34 +0200 |
| commit | 5aca284210ce827f780ea2f4f9c6ab8d6e2d6648 (patch) | |
| tree | 485c43c3dd95105dccf7fcc32934112a76ea2129 /fs/ext4/ioctl.c | |
| parent | Linux 5.2-rc4 (diff) | |
| download | linux-5aca284210ce827f780ea2f4f9c6ab8d6e2d6648.tar.xz linux-5aca284210ce827f780ea2f4f9c6ab8d6e2d6648.zip | |
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>
Diffstat (limited to 'fs/ext4/ioctl.c')
| -rw-r--r-- | fs/ext4/ioctl.c | 13 |
1 files changed, 3 insertions, 10 deletions
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 |