1 files changed, 8 insertions, 0 deletions
diff --git a/src/prof.c b/src/prof.c
index 975722c..32760e6 100644
--- a/src/prof.c
+++ b/src/prof.c
@@ -1409,7 +1409,15 @@ prof_open_maps(const char *format, ...) {
 	va_start(ap, format);
 	malloc_vsnprintf(filename, sizeof(filename), format, ap);
 	va_end(ap);
+
+#if defined(O_CLOEXEC)
 	mfd = open(filename, O_RDONLY | O_CLOEXEC);
+#else
+	mfd = open(filename, O_RDONLY);
+	if (mfd != -1) {
+		fcntl(mfd, F_SETFD, fcntl(mfd, F_GETFD) | FD_CLOEXEC);
+	}
+#endif
 
 	return mfd;
 }