1 files changed, 20 insertions, 0 deletions
diff --git a/lang/modula-3-socks/files/select.c b/lang/modula-3-socks/files/select.c
new file mode 100644
index 000000000000..a3602472ce7a
--- /dev/null
+++ b/lang/modula-3-socks/files/select.c
@@ -0,0 +1,20 @@
+#include "wrap.h"
+#include <sys/types.h>
+#include <sys/time.h>
+#include <unistd.h>
+
+int
+m3_select(int nfds, fd_set *readfds, fd_set *writefds,
+  fd_set *exceptfds, struct timeval *timeout)
+{
+  int result;
+
+  ENTER_CRITICAL;
+  MAKE_WRITABLE(readfds);
+  MAKE_WRITABLE(writefds);
+  MAKE_WRITABLE(exceptfds);
+  MAKE_READABLE(timeout);
+  result = select(nfds, readfds, writefds, exceptfds, timeout);
+  EXIT_CRITICAL;
+  return result;
+}