diff --git a/linux/linux.c b/linux/linux.c
index 9d622a800c0..78b1e678bac 100644
--- a/linux/linux.c
+++ b/linux/linux.c
@@ -282,6 +282,13 @@ toku_os_get_processor_frequency(uint64_t *hzret) {
     return r;
 }
 
+int
+toku_dup2(int fd, int fd2) {
+    int r;
+    r = dup2(fd, fd2);
+    return r;
+}
+
 #if __GNUC__ && __i386__
 
 // workaround for a gcc 4.1.2 bug on 32 bit platforms.
diff --git a/newbrt/brt-serialize.c b/newbrt/brt-serialize.c
index 8c19fc336e1..2e2ff421cb0 100644
--- a/newbrt/brt-serialize.c
+++ b/newbrt/brt-serialize.c
@@ -991,7 +991,7 @@ toku_deserialize_brtnode_from (int fd, BLOCKNUM blocknum, u_int32_t fullhash, BR
 
 #if DO_TOKU_TRACE
     if (toku_trace_fd == -1) 
-        toku_trace_fd = open("/dev/null", O_WRONLY);
+        toku_trace_fd = open(DEV_NULL_FILE, O_WRONLY);
     toku_trace("deserial start");
 #endif
 
diff --git a/newbrt/tests/recovery-cbegin-cend-hello.c b/newbrt/tests/recovery-cbegin-cend-hello.c
index 1eea963c951..66446e758d8 100644
--- a/newbrt/tests/recovery-cbegin-cend-hello.c
+++ b/newbrt/tests/recovery-cbegin-cend-hello.c
@@ -34,9 +34,9 @@ run_test(void) {
     }
 
     // redirect stderr
-    int devnul = open("/dev/null", O_WRONLY);
+    int devnul = open(DEV_NULL_FILE, O_WRONLY);
     assert(devnul>=0);
-    r = dup2(devnul, fileno(stderr)); 	    assert(r==fileno(stderr));
+    r = toku_dup2(devnul, fileno(stderr)); 	    assert(r==fileno(stderr));
     r = close(devnul);                      assert(r==0);
 
     // run recovery
diff --git a/newbrt/tests/recovery-cbegin.c b/newbrt/tests/recovery-cbegin.c
index 41d44b5b5c0..6fde03d5a9f 100644
--- a/newbrt/tests/recovery-cbegin.c
+++ b/newbrt/tests/recovery-cbegin.c
@@ -22,10 +22,12 @@ run_test(void) {
     r = toku_logger_close(&logger); assert(r == 0);
 
     // run recovery
-    int devnul = open("/dev/null", O_WRONLY);
+    int devnul = open(DEV_NULL_FILE, O_WRONLY);
     assert(devnul>=0);
-    r = dup2(devnul, fileno(stderr)); 	    assert(r==fileno(stderr));
-    r = close(devnul);                      assert(r==0);
+    r = toku_dup2(devnul, fileno(stderr));
+    assert(r==fileno(stderr));
+    r = close(devnul);
+    assert(r==0);
 
     r = tokudb_recover(TESTDIR, TESTDIR, 0, 0, NULL, NULL, NULL, NULL, 0); 
     assert(r == 0);
diff --git a/newbrt/tests/recovery-fopen-missing-file.c b/newbrt/tests/recovery-fopen-missing-file.c
index 48035939c01..cf1af0829c4 100644
--- a/newbrt/tests/recovery-fopen-missing-file.c
+++ b/newbrt/tests/recovery-fopen-missing-file.c
@@ -28,9 +28,9 @@ run_test(void) {
     r = toku_logger_close(&logger); assert(r == 0);
 
     // redirect stderr
-    int devnul = open("/dev/null", O_WRONLY);
+    int devnul = open(DEV_NULL_FILE, O_WRONLY);
     assert(devnul>=0);
-    r = dup2(devnul, fileno(stderr)); 	    assert(r==fileno(stderr));
+    r = toku_dup2(devnul, fileno(stderr)); 	    assert(r==fileno(stderr));
     r = close(devnul);                      assert(r==0);
 
     // run recovery
diff --git a/newbrt/tests/recovery-hello.c b/newbrt/tests/recovery-hello.c
index cd1741c0025..d94d905f15e 100644
--- a/newbrt/tests/recovery-hello.c
+++ b/newbrt/tests/recovery-hello.c
@@ -28,9 +28,9 @@ run_test(void) {
     r = toku_logger_close(&logger); assert(r == 0);
 
     // redirect stderr
-    int devnul = open("/dev/null", O_WRONLY);
+    int devnul = open(DEV_NULL_FILE, O_WRONLY);
     assert(devnul>=0);
-    r = dup2(devnul, fileno(stderr)); 	    assert(r==fileno(stderr));
+    r = toku_dup2(devnul, fileno(stderr)); 	    assert(r==fileno(stderr));
     r = close(devnul);                      assert(r==0);
 
     // run recovery
diff --git a/newbrt/tests/recovery-no-datadir.c b/newbrt/tests/recovery-no-datadir.c
index 5b829d86efe..45f9a439ce4 100644
--- a/newbrt/tests/recovery-no-datadir.c
+++ b/newbrt/tests/recovery-no-datadir.c
@@ -22,9 +22,9 @@ run_test(void) {
     r = toku_logger_close(&logger); assert(r == 0);
 
     // redirect stderr
-    int devnul = open("/dev/null", O_WRONLY);
+    int devnul = open(DEV_NULL_FILE, O_WRONLY);
     assert(devnul>=0);
-    r = dup2(devnul, fileno(stderr)); 	    assert(r==fileno(stderr));
+    r = toku_dup2(devnul, fileno(stderr)); 	    assert(r==fileno(stderr));
     r = close(devnul);                      assert(r==0);
 
     // run recovery
diff --git a/newbrt/tests/recovery-no-log.c b/newbrt/tests/recovery-no-log.c
index a756e035a4c..a23f98de3ee 100644
--- a/newbrt/tests/recovery-no-log.c
+++ b/newbrt/tests/recovery-no-log.c
@@ -14,9 +14,9 @@ run_test(void) {
     r = toku_os_mkdir(TESTDIR, S_IRWXU); assert(r == 0);
 
     // redirect stderr
-    int devnul = open("/dev/null", O_WRONLY);
+    int devnul = open(DEV_NULL_FILE, O_WRONLY);
     assert(devnul>=0);
-    r = dup2(devnul, fileno(stderr)); 	    assert(r==fileno(stderr));
+    r = toku_dup2(devnul, fileno(stderr)); 	    assert(r==fileno(stderr));
     r = close(devnul);                      assert(r==0);
 
     // run recovery
diff --git a/release/examples/db-scan.c b/release/examples/db-scan.c
index 2ef5e81a800..e82d0218fd9 100644
--- a/release/examples/db-scan.c
+++ b/release/examples/db-scan.c
@@ -222,7 +222,7 @@ static void scanscan_lwc (void) {
 #endif
 
 static void scanscan_range (void) {
-    int fnull = open("/dev/null", O_WRONLY); assert(fnull >= 0); // use with strace
+    int fnull = open(DEV_NULL_FILE, O_WRONLY); assert(fnull >= 0); // use with strace
     int r;
     double tstart = gettime();
     DBC *dbc;
diff --git a/src/tests/diskfull.c b/src/tests/diskfull.c
index e895c500a47..e48cfec05e3 100644
--- a/src/tests/diskfull.c
+++ b/src/tests/diskfull.c
@@ -178,9 +178,9 @@ do_writes_that_fail (void) {
 	write_count=0;
 	pid_t child;
 	if ((child=fork())==0) {
-	    int devnul = open("/dev/null", O_WRONLY);
+	    int devnul = open(DEV_NULL_FILE, O_WRONLY);
 	    assert(devnul>=0);
-	    { int r = dup2(devnul, fileno(stderr)); 	    assert(r==fileno(stderr)); }
+	    { int r = toku_dup2(devnul, fileno(stderr)); 	    assert(r==fileno(stderr)); }
 	    { int r = close(devnul);                          assert(r==0);              }
 	    do_db_work();
 	    exit(1);
diff --git a/src/tests/test_abort_delete_first.c b/src/tests/test_abort_delete_first.c
index db86373abb7..793751af952 100644
--- a/src/tests/test_abort_delete_first.c
+++ b/src/tests/test_abort_delete_first.c
@@ -119,7 +119,7 @@ do_abort_delete_first_or_last(int N,
     r=db->close(db, 0); CKERR(r);
     r=env->close(env, 0); CKERR(r);
 #if defined(TOKUDB) && defined(__unix__)
-    r=system("../../utils/tokudb_dump_static -h " ENVDIR " foo.db > /dev/null");
+    r=system("../../utils/tokudb_dump_static -h " ENVDIR " foo.db > " DEV_NULL_FILE);
     CKERR(r);
 #endif
 }
diff --git a/toku_include/toku_os.h b/toku_include/toku_os.h
index b54c128aaa4..a6e70d45314 100644
--- a/toku_include/toku_os.h
+++ b/toku_include/toku_os.h
@@ -79,6 +79,9 @@ int toku_stat(const char *name, toku_struct_stat *statbuf) __attribute__((__visi
 // Portable linux 'fstat'
 int toku_fstat(int fd, toku_struct_stat *statbuf) __attribute__((__visibility__("default")));
 
+// Portable linux 'dup2'
+int toku_dup2(int fd, int fd2) __attribute__((__visibility__("default")));
+
 #if defined __cplusplus
 };
 #endif
diff --git a/toku_include/toku_portability.h b/toku_include/toku_portability.h
index d1aa3384c0a..69ae88d6d74 100644
--- a/toku_include/toku_portability.h
+++ b/toku_include/toku_portability.h
@@ -94,6 +94,10 @@ typedef int64_t toku_off_t;
 #    ifndef DONT_DEPRECATE_MALLOC
 #       pragma deprecated (malloc, free, realloc)
 #    endif
+#    ifndef TOKU_WINDOWS_ALLOW_DEPRECATED
+#       pragma poison   dup2
+#       pragma poison   _dup2
+#    endif
 #   else
 int      creat(const char *pathname, mode_t mode)   __attribute__((__deprecated__));
 int      fstat(int fd, struct stat *buf)            __attribute__((__deprecated__));
@@ -103,6 +107,8 @@ long int syscall(long int __sysno, ...)             __attribute__((__deprecated_
 // Sadly, dlmalloc needs sysconf, and on linux this causes trouble with -combine.  So let the warnings show up under windows only.
 // long int sysconf(int)                   __attribute__((__deprecated__));
 int      mkdir(const char *pathname, mode_t mode)   __attribute__((__deprecated__));
+int      dup2(int fd, int fd2)                      __attribute__((__deprecated__));
+int      _dup2(int fd, int fd2)                     __attribute__((__deprecated__));
 // strdup is a macro in some libraries.
 #undef strdup
 char*    strdup(const char *)           __attribute__((__deprecated__));
diff --git a/windows/Makefile b/windows/Makefile
index 64966e4b0b9..c4f99f55576 100644
--- a/windows/Makefile
+++ b/windows/Makefile
@@ -26,6 +26,8 @@ $(TARGET): $(OBJS)
 check: $(TARGET)
 	cd tests && $(MAKE) check
 
+$(OBJS): CFLAGS += -DTOKU_WINDOWS_ALLOW_DEPRECATED
+
 clean:
 	rm -rf $(TARGET) $(LIBPORTABILITY) $(PTHREAD_LIB)
 	cd tests && $(MAKE) clean
diff --git a/windows/windows.c b/windows/windows.c
index 63b029f1e9b..31cef7d4aea 100644
--- a/windows/windows.c
+++ b/windows/windows.c
@@ -315,3 +315,13 @@ toku_os_get_processor_frequency(uint64_t *hzret) {
     return 0;
 }
 
+int
+toku_dup2(int fd, int fd2) {
+    int r;
+    r = _dup2(fd, fd2);
+    if (r==0) //success
+        r = fd2;
+    return r;
+
+}
+