提交 0fcbf996 编写于 作者: C Christoph Hellwig 提交者: Al Viro

fs: return -EOPNOTSUPP if clone is not supported

-EBADF is a rather confusing error if an operations is not supported,
and nfsd gets rather upset about it.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
上级 b6853f78
......@@ -1533,10 +1533,12 @@ int vfs_clone_file_range(struct file *file_in, loff_t pos_in,
if (!(file_in->f_mode & FMODE_READ) ||
!(file_out->f_mode & FMODE_WRITE) ||
(file_out->f_flags & O_APPEND) ||
!file_in->f_op->clone_file_range)
(file_out->f_flags & O_APPEND))
return -EBADF;
if (!file_in->f_op->clone_file_range)
return -EOPNOTSUPP;
ret = clone_verify_area(file_in, pos_in, len, false);
if (ret)
return ret;
......
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