From 550dce92152f0b2217b4eab8e48fcf02e6311606 Mon Sep 17 00:00:00 2001
From: Darshan Sen <raisinten@gmail.com>
Date: Sat, 13 Feb 2021 20:53:06 +0530
Subject: [PATCH] unix: check for EXDEV for uv__fs_copy_file_range

copy_file_range will not work when in_fd and out_fd
are not on the same mounted filesystem (pre Linux 5.3).

Fixes: https://github.com/nodejs/node/issues/37284
Refs: https://www.man7.org/linux/man-pages/man2/copy_file_range.2.html#ERRORS
---
 src/unix/fs.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/unix/fs.c b/src/unix/fs.c
index 88ac07312c7..fa39b987606 100644
--- a/src/unix/fs.c
+++ b/src/unix/fs.c
@@ -929,6 +929,11 @@ static ssize_t uv__fs_sendfile(uv_fs_t* req) {
         } else if (r == -1 && errno == ENOTSUP) {
           /* ENOTSUP - it could work on another file system type */
           errno = 0;
+        } else if (r == -1 && errno == EXDEV) {
+          /* EXDEV - it will not work when in_fd and out_fd
+           * are not on the same mounted filesystem (pre Linux 5.3)
+           */
+          errno = 0;
         } else {
           goto ok;
         }