On Mon, Dec 3, 2018 at 1:20 AM Dave Chinner <david@xxxxxxxxxxxxx> wrote:
>
> From: Dave Chinner <dchinner@xxxxxxxxxx>
>
> copy_file_range() takes a size_t as it's length, not a "long long".
> Therefore we need to be able to pass sizes larger than 8EB to it
> to be able to test the interface fully and that requires copy_range
> to accept all values except an explicit error value of "-1LL".
>
> Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
Reviewed-by: Jan Tulak <jtulak@xxxxxxxxxx>
> ---
> io/copy_file_range.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/io/copy_file_range.c b/io/copy_file_range.c
> index f118a3bfd506..4e2969c9ca47 100644
> --- a/io/copy_file_range.c
> +++ b/io/copy_file_range.c
> @@ -34,7 +34,7 @@ copy_range_help(void)
> * glibc buffered copy fallback.
> */
> static loff_t
> -copy_file_range_cmd(int fd, long long *src, long long *dst, long long len)
> +copy_file_range_cmd(int fd, long long *src, long long *dst, size_t len)
> {
> loff_t ret;
>
> @@ -78,7 +78,7 @@ copy_range_f(int argc, char **argv)
> {
> long long src = 0;
> long long dst = 0;
> - long long len = 0;
> + size_t len = 0;
> int opt;
> int ret;
> int fd;
> @@ -104,7 +104,7 @@ copy_range_f(int argc, char **argv)
> break;
> case 'l':
> len = cvtnum(fsblocksize, fssectsize, optarg);
> - if (len < 0) {
> + if (len == -1LL) {
> printf(_("invalid length -- %s\n"), optarg);
> return 0;
> }
>
--
Jan Tulak
