Message ID | 20190701202630.43776-4-ebiggers@kernel.org (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
Series | f2fs: use generic helpers for FS_IOC_{SETFLAGS,FSSETXATTR} | expand |
On 2019/7/2 4:26, Eric Biggers wrote: > From: Eric Biggers <ebiggers@google.com> > > Now that f2fs_ioc_setflags() and f2fs_ioc_fssetxattr() call the VFS > helper functions which check for permission to change the immutable and > append-only flags, it's no longer needed to do this check in > f2fs_setflags_common() too. So remove it. > > This is based on a patch from Darrick Wong, but reworked to apply after > commit 360985573b55 ("f2fs: separate f2fs i_flags from fs_flags and ext4 > i_flags"). > > Originally-from: Darrick J. Wong <darrick.wong@oracle.com> > Signed-off-by: Eric Biggers <ebiggers@google.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Thanks,
On Mon, Jul 01, 2019 at 01:26:30PM -0700, Eric Biggers wrote: > From: Eric Biggers <ebiggers@google.com> > > Now that f2fs_ioc_setflags() and f2fs_ioc_fssetxattr() call the VFS > helper functions which check for permission to change the immutable and > append-only flags, it's no longer needed to do this check in > f2fs_setflags_common() too. So remove it. > > This is based on a patch from Darrick Wong, but reworked to apply after > commit 360985573b55 ("f2fs: separate f2fs i_flags from fs_flags and ext4 > i_flags"). > > Originally-from: Darrick J. Wong <darrick.wong@oracle.com> > Signed-off-by: Eric Biggers <ebiggers@google.com> Looks ok, Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> --D > --- > fs/f2fs/file.c | 9 +-------- > 1 file changed, 1 insertion(+), 8 deletions(-) > > diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c > index ae1a54ecc9fccc..e8b81f6f5c2b15 100644 > --- a/fs/f2fs/file.c > +++ b/fs/f2fs/file.c > @@ -1648,19 +1648,12 @@ static int f2fs_file_flush(struct file *file, fl_owner_t id) > static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask) > { > struct f2fs_inode_info *fi = F2FS_I(inode); > - u32 oldflags; > > /* Is it quota file? Do not allow user to mess with it */ > if (IS_NOQUOTA(inode)) > return -EPERM; > > - oldflags = fi->i_flags; > - > - if ((iflags ^ oldflags) & (F2FS_APPEND_FL | F2FS_IMMUTABLE_FL)) > - if (!capable(CAP_LINUX_IMMUTABLE)) > - return -EPERM; > - > - fi->i_flags = iflags | (oldflags & ~mask); > + fi->i_flags = iflags | (fi->i_flags & ~mask); > > if (fi->i_flags & F2FS_PROJINHERIT_FL) > set_inode_flag(inode, FI_PROJ_INHERIT); > -- > 2.22.0.410.gd8fdbe21b5-goog >
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index ae1a54ecc9fccc..e8b81f6f5c2b15 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -1648,19 +1648,12 @@ static int f2fs_file_flush(struct file *file, fl_owner_t id) static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask) { struct f2fs_inode_info *fi = F2FS_I(inode); - u32 oldflags; /* Is it quota file? Do not allow user to mess with it */ if (IS_NOQUOTA(inode)) return -EPERM; - oldflags = fi->i_flags; - - if ((iflags ^ oldflags) & (F2FS_APPEND_FL | F2FS_IMMUTABLE_FL)) - if (!capable(CAP_LINUX_IMMUTABLE)) - return -EPERM; - - fi->i_flags = iflags | (oldflags & ~mask); + fi->i_flags = iflags | (fi->i_flags & ~mask); if (fi->i_flags & F2FS_PROJINHERIT_FL) set_inode_flag(inode, FI_PROJ_INHERIT);