The generic/513 tell that cloning into a file did not strip security privileges (suid, capabilities) like a regular write would.

Signed-off-by: Lu Fengqi lufq.fnst@cn.fujitsu.com --- The xfs and ocfs2 call generic_remap_file_range_prep to drop file privileges, I'm not sure whether btrfs should do the same thing.

Any suggestion?

fs/btrfs/ioctl.c | 4 ++++ 1 file changed, 4 insertions(+)

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 410c7e007ba8..bc33c480603b 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -4312,6 +4312,10 @@ static noinline int btrfs_clone_files(struct file *file, struct file *file_src, goto out_unlock; }

+ ret = file_remove_privs(file); + if (ret) + goto out_unlock; + if (destoff > inode->i_size) { ret = btrfs_cont_expand(inode, inode->i_size, destoff); if (ret)