From 993e9ebd07246b0f1a4201eed180c6f74c4d2f13 Mon Sep 17 00:00:00 2001
From: David CARLIER <devnexen@gmail.com>
Date: Sun, 27 Feb 2022 10:49:29 +0000
Subject: [PATCH] freebsd: use copy_file_range() in uv_fs_sendfile() (#3496)

Use copy_file_range() on FreeBSD 13 and above.
---
 src/unix/freebsd.c  | 15 +++++++++++++++
 src/unix/fs.c       | 11 +++++++++++
 src/unix/internal.h | 10 ++++++++++
 3 files changed, 36 insertions(+)

diff --git a/src/unix/freebsd.c b/src/unix/freebsd.c
index 170b897e..658ff262 100644
--- a/src/unix/freebsd.c
+++ b/src/unix/freebsd.c
@@ -287,3 +287,18 @@ int uv__recvmmsg(int fd, struct uv__mmsghdr* mmsg, unsigned int vlen) {
   return errno = ENOSYS, -1;
 #endif
 }
+
+ssize_t
+uv__fs_copy_file_range(int fd_in,
+                       off_t* off_in,
+                       int fd_out,
+                       off_t* off_out,
+                       size_t len,
+                       unsigned int flags)
+{
+#if __FreeBSD__ >= 13 && !defined(__DragonFly__)
+	return copy_file_range(fd_in, off_in, fd_out, off_out, len, flags);
+#else
+	return errno = ENOSYS, -1;
+#endif
+}
diff --git a/src/unix/fs.c b/src/unix/fs.c
index 99ea7465..b3211ec1 100644
--- a/src/unix/fs.c
+++ b/src/unix/fs.c
@@ -1075,6 +1075,17 @@ static ssize_t uv__fs_sendfile(uv_fs_t* req) {
      */
 
 #if defined(__FreeBSD__) || defined(__DragonFly__)
+#if defined(__FreeBSD__)
+    off_t off;
+
+    off = req->off;
+    r = uv__fs_copy_file_range(in_fd, &off, out_fd, NULL, req->bufsml[0].len, 0);
+    if (r >= 0) {
+        r = off - req->off;
+        req->off = off;
+        return r;
+    }
+#endif
     len = 0;
     r = sendfile(in_fd, out_fd, req->off, req->bufsml[0].len, NULL, &len, 0);
 #elif defined(__FreeBSD_kernel__)
diff --git a/src/unix/internal.h b/src/unix/internal.h
index ec46f385..2fa903e9 100644
--- a/src/unix/internal.h
+++ b/src/unix/internal.h
@@ -359,5 +359,15 @@ size_t strnlen(const char* s, size_t maxlen);
 #endif
 #endif
 
+#if defined(__FreeBSD__)
+ssize_t
+uv__fs_copy_file_range(int fd_in,
+                       off_t* off_in,
+                       int fd_out,
+                       off_t* off_out,
+                       size_t len,
+                       unsigned int flags);
+#endif
+
 
 #endif /* UV_UNIX_INTERNAL_H_ */