fs: return -EOPNOTSUPP if clone is not supported (0fcbf996) · Commits · 戴 / test

-EBADF is a rather confusing error if an operations is not supported, and nfsd gets rather upset about it. Signed-off-by:

fs/read_write.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -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;