httpd: round down sendfile byte count to 64k

*: style fixes

1 files changed, 2 insertions, 1 deletions

diff --git a/networking/httpd.c b/networking/httpd.c
index 3e3117a79..9c02ad679 100644
--- a/networking/httpd.c
+++ b/networking/httpd.c
@@ -1395,7 +1395,8 @@ static int sendFile(const char *url)
                 fd++; /* write to fd #1 in inetd mode */
 #if ENABLE_FEATURE_HTTPD_USE_SENDFILE
         do {
-                count = sendfile(fd, f, &offset, MAXINT(ssize_t));
+                /* byte count is rounded down to 64k */
+                count = sendfile(fd, f, &offset, MAXINT(ssize_t) - 0xffff);
                 if (count < 0) {
                         if (offset == 0)
                                 goto fallback;