From 1e11fb24066f3fc259ee30db3dbb2a3127e05956 Mon Sep 17 00:00:00 2001
From: Darren Tucker <dtucker@dtucker.net>
Date: Mon, 2 Aug 2021 18:56:29 +1000
Subject: [PATCH] Check for RLIMIT_NOFILE before trying to use it.

---
 sftp-server.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sftp-server.c b/sftp-server.c
index 4972b2a65..c89c1f424 100644
--- a/sftp-server.c
+++ b/sftp-server.c
@@ -1491,13 +1491,13 @@ process_extended_limits(u_int32_t id)
 	struct sshbuf *msg;
 	int r;
 	uint64_t nfiles = 0;
-#ifdef HAVE_GETRLIMIT
+#if defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE)
 	struct rlimit rlim;
 #endif
 
 	debug("request %u: limits", id);
 
-#ifdef HAVE_GETRLIMIT
+#if defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE)
 	if (getrlimit(RLIMIT_NOFILE, &rlim) != -1 && rlim.rlim_cur > 5)
 		nfiles = rlim.rlim_cur - 5; /* stdio(3) + syslog + spare */
 #endif