1 files changed, 5 insertions, 0 deletions

diff --git a/update.c b/update.c
index e9f496913..7279d83a8 100644
--- a/update.c
+++ b/update.c
@@ -72,7 +72,12 @@ extern int update_main(int argc, char **argv)
                 /* Become a proper daemon */
                 setsid();
                 chdir("/");
+#ifdef OPEN_MAX
                 for (pid = 0; pid < OPEN_MAX; pid++) close(pid);
+#else
+                /* glibc 2.1.92 requires using sysconf(_SC_OPEN_MAX) */
+                for (pid = 0; pid < sysconf(_SC_OPEN_MAX); pid++) close(pid);
+#endif
 
                 /*
                  * This is no longer necessary since 1.3.5x, but it will harmlessly