diff --git a/libc/unistd/pselect.c b/libc/unistd/pselect.c
new file mode 100644
index 0000000..76ce2c0
--- /dev/null
+++ b/libc/unistd/pselect.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <sys/select.h>
+#include <signal.h>
+#include <pthread.h>
+
+int
+pselect(int  n, fd_set*  readfds, fd_set*  writefds, fd_set*  errfds,
+        const struct timespec*  timeout, const sigset_t*  sigmask)
+{
+    sigset_t        oldmask;
+    int             result;
+    struct timeval  tv, *tv_timeout = NULL;
+
+    if (sigmask != NULL)
+        pthread_sigmask( SIG_SETMASK, sigmask, &oldmask );
+
+    if (timeout != NULL) {
+        tv_timeout = &tv;
+        tv.tv_sec  = timeout->tv_sec;
+        tv.tv_usec = (timeout->tv_nsec + 999)/1000;  // round up
+        if (tv.tv_usec >= 1000000) {
+            tv.tv_sec  += 1;
+            tv.tv_usec -= 1000000;
+        }
+    }
+
+    result = select( n, readfds, writefds, errfds, tv_timeout );
+
+    if (sigmask != NULL)
+        pthread_sigmask( SIG_SETMASK, &oldmask, NULL );
+
+    return result;
+}