diff --git a/deps/uv/.gitignore b/deps/uv/.gitignore
index 7eb49322af01f2..6d396efb49fbe5 100644
--- a/deps/uv/.gitignore
+++ b/deps/uv/.gitignore
@@ -7,9 +7,11 @@
 *.sdf
 *.suo
 .vs/
+.vscode/
 *.VC.db
 *.VC.opendb
 core
+.cache
 vgcore.*
 .buildstamp
 .dirstamp
@@ -74,3 +76,5 @@ cmake-build-debug/
 
 # make dist output
 libuv-*.tar.*
+/dist.libuv.org/
+/libuv-release-tool/
diff --git a/deps/uv/AUTHORS b/deps/uv/AUTHORS
index 6bf1a9fa2f96fa..f3942ced3c5703 100644
--- a/deps/uv/AUTHORS
+++ b/deps/uv/AUTHORS
@@ -560,3 +560,10 @@ prubel <paul@rubels.net>
 Per Allansson <65364157+per-allansson@users.noreply.github.com>
 Matheus Izvekov <mizvekov@gmail.com>
 Christian Heimlich <chris@pcserenity.com>
+Hao Hu <33607772+hhu8@users.noreply.github.com>
+matoro <12038583+matoro@users.noreply.github.com>
+Bo Anderson <mail@boanderson.me>
+Ardi Nugraha <33378542+ardi-nugraha@users.noreply.github.com>
+Anton Bachin <antonbachin@yahoo.com>
+Trevor Flynn <trevorflynn@liquidcrystalstudios.com>
+Andy Pan <panjf2000@gmail.com>
diff --git a/deps/uv/CMakeLists.txt b/deps/uv/CMakeLists.txt
index 72377851b69f74..5e8e0166d743bc 100644
--- a/deps/uv/CMakeLists.txt
+++ b/deps/uv/CMakeLists.txt
@@ -161,6 +161,11 @@ list(APPEND uv_cflags ${lint-utf8-msvc} )
 check_c_compiler_flag(-fno-strict-aliasing UV_F_STRICT_ALIASING)
 list(APPEND uv_cflags $<$<BOOL:${UV_F_STRICT_ALIASING}>:-fno-strict-aliasing>)
 
+if (MSVC)
+  # Error on calling undeclared functions.
+  list(APPEND uv_cflags "/we4013")
+endif()
+
 set(uv_sources
     src/fs-poll.c
     src/idna.c
@@ -176,7 +181,7 @@ set(uv_sources
     src/version.c)
 
 if(WIN32)
-  list(APPEND uv_defines WIN32_LEAN_AND_MEAN _WIN32_WINNT=0x0602)
+  list(APPEND uv_defines WIN32_LEAN_AND_MEAN _WIN32_WINNT=0x0602 _CRT_DECLARE_NONSTDC_NAMES=0)
   list(APPEND uv_libraries
        psapi
        user32
@@ -186,7 +191,6 @@ if(WIN32)
        ws2_32
        dbghelp
        ole32
-       uuid
        shell32)
   list(APPEND uv_sources
        src/win/async.c
@@ -655,6 +659,7 @@ if(LIBUV_BUILD_TESTS)
        test/test-thread-affinity.c
        test/test-thread-equal.c
        test/test-thread.c
+       test/test-thread-priority.c
        test/test-threadpool-cancel.c
        test/test-threadpool.c
        test/test-timer-again.c
@@ -702,6 +707,12 @@ if(LIBUV_BUILD_TESTS)
     set_tests_properties(uv_test PROPERTIES ENVIRONMENT
                          "LIBPATH=${CMAKE_BINARY_DIR}:$ENV{LIBPATH}")
   endif()
+  if(WIN32)
+    add_custom_command(TARGET uv_run_tests POST_BUILD
+                       COMMAND "${CMAKE_COMMAND}" -E copy
+                       "$<TARGET_FILE:uv_run_tests>"
+                       "$<TARGET_FILE_DIR:uv_run_tests>/uv_run_tests_no_ext")
+  endif()
   add_executable(uv_run_tests_a ${uv_test_sources} uv_win_longpath.manifest)
   target_compile_definitions(uv_run_tests_a PRIVATE ${uv_defines})
   target_compile_options(uv_run_tests_a PRIVATE ${uv_cflags})
@@ -718,6 +729,12 @@ if(LIBUV_BUILD_TESTS)
     set_target_properties(uv_run_tests PROPERTIES LINKER_LANGUAGE CXX)
     set_target_properties(uv_run_tests_a PROPERTIES LINKER_LANGUAGE CXX)
   endif()
+  if(WIN32)
+    add_custom_command(TARGET uv_run_tests_a POST_BUILD
+                       COMMAND "${CMAKE_COMMAND}" -E copy
+                       "$<TARGET_FILE:uv_run_tests_a>"
+                       "$<TARGET_FILE_DIR:uv_run_tests_a>/uv_run_tests_a_no_ext")
+  endif()
 endif()
 
 # Now for some gibbering horrors from beyond the stars...
@@ -762,6 +779,12 @@ endif()
 
 if(MSVC)
   set(CMAKE_DEBUG_POSTFIX d)
+  get_filename_component(CMAKE_C_COMPILER_DIR ${CMAKE_C_COMPILER} DIRECTORY)
+  if(ASAN)
+    file(INSTALL "${CMAKE_C_COMPILER_DIR}/llvm-symbolizer.exe" DESTINATION "${CMAKE_CURRENT_BINARY_DIR}")
+    file(INSTALL "${CMAKE_C_COMPILER_DIR}/clang_rt.asan_dynamic-x86_64.dll" DESTINATION "${CMAKE_CURRENT_BINARY_DIR}")
+    file(INSTALL "${CMAKE_C_COMPILER_DIR}/clang_rt.asan_dbg_dynamic-x86_64.dll" DESTINATION "${CMAKE_CURRENT_BINARY_DIR}")
+  endif()
 endif()
 
 message(STATUS "summary of build options:
diff --git a/deps/uv/ChangeLog b/deps/uv/ChangeLog
index f40fcc600bbc34..05c1cb7e748b43 100644
--- a/deps/uv/ChangeLog
+++ b/deps/uv/ChangeLog
@@ -1,4 +1,95 @@
-2023.11.06, Version 1.47.0 (Stable)
+2024.02.07, Version 1.48.0 (Stable)
+
+Changes since version 1.47.0:
+
+* misc: remove deprecated stalebot file (Jameson Nash)
+
+* build: disable windows asan buildbot (Ben Noordhuis)
+
+* test: don't run tcp_writealot under msan (Ben Noordhuis)
+
+* build,win: remove extraneous -lshell32 (Ben Noordhuis)
+
+* unix: ignore ifaddrs with NULL ifa_addr (Stephen Gallagher)
+
+* unix,win: utility for setting priority for thread (Hao Hu)
+
+* pipe: add back error handling to connect / bind (Jameson Nash)
+
+* test: check if ipv6 link-local traffic is routable (Ben Noordhuis)
+
+* win: remove check for UV_PIPE_NO_TRUNCATE (Jameson Nash)
+
+* linux: disable io_uring on hppa below kernel 6.1.51 (matoro)
+
+* unix,win: fix read past end of pipe name buffer (Ben Noordhuis)
+
+* unix: unbreak macOS < 10.14 (Sergey Fedorov)
+
+* aix: disable ipv6 link local (Abdirahim Musse)
+
+* doc: move cjihrig to emeriti (cjihrig)
+
+* unix: correct pwritev conditional (Bo Anderson)
+
+* test_fs.c: Fix issue on 32-bit systems using btrfs (Stephen Gallagher)
+
+* misc: ignore libuv-release-tool files (Jameson Nash)
+
+* win: honor NoDefaultCurrentDirectoryInExePath env var (Ardi Nugraha)
+
+* idna: fix compilation warning (Saúl Ibarra Corretgé)
+
+* linux: remove HAVE_IFADDRS_H macro (Ben Noordhuis)
+
+* test: skip tcp-write-in-a-row on IBM i (Abdirahim Musse)
+
+* build,win: work around missing uuid.dll on MinGW (Anton Bachin)
+
+* win: stop using deprecated names (Matheus Izvekov)
+
+* unix,win: fix busy loop with zero timeout timers (Matheus Izvekov)
+
+* aix,ibmi: use uv_interface_addresses instead of getifaddrs (Abdirahim Musse)
+
+* linux: fix bind/connect for abstract sockets (Santiago Gimeno)
+
+* win: replace c99 comments with c89 comments (Trevor Flynn)
+
+* build: add .cache clangd folder to .gitignore (Juan José Arboleda)
+
+* unix: support full TCP keep-alive on Solaris (Andy Pan)
+
+* freebsd: fix F_KINFO file path handling (David Carlier)
+
+* linux: retry fs op if unsupported by io_uring (Santiago Gimeno)
+
+* freebsd: fix build on non-intel archs (David Carlier)
+
+* unix: optimize uv__tcp_keepalive cpp directives (Andy Pan)
+
+* linux: disable io_uring on ppc64 and ppc64le (Brad King)
+
+* doc: add very basic Security Policy document (Santiago Gimeno)
+
+* build: re-enable msvc-asan job on CI (Jameson Nash)
+
+* win/spawn: optionally run executable paths with no file extension (Brad King)
+
+* win: fix ESRCH implementation (Jameson Nash)
+
+* unix,win: reset the timer queue on stop (Santiago Gimeno)
+
+* fix: always zero-terminate idna output (Ben Noordhuis)
+
+* fix: reject zero-length idna inputs (Ben Noordhuis)
+
+* test: empty strings are not valid IDNA (Santiago Gimeno)
+
+* Merge pull request from GHSA-f74f-cvh7-c6q6 (Ben Noordhuis)
+
+
+2023.11.06, Version 1.47.0 (Stable), be6b81a352d17513c95be153afcb3148f1a451cd
 
 Changes since version 1.46.0:
 
diff --git a/deps/uv/MAINTAINERS.md b/deps/uv/MAINTAINERS.md
index ff8be88b7b7cd5..41c60cb383cfbe 100644
--- a/deps/uv/MAINTAINERS.md
+++ b/deps/uv/MAINTAINERS.md
@@ -4,9 +4,6 @@ libuv is currently managed by the following individuals:
 
 * **Ben Noordhuis** ([@bnoordhuis](https://github.com/bnoordhuis))
   - GPG key: D77B 1E34 243F BAF0 5F8E  9CC3 4F55 C8C8 46AB 89B9 (pubkey-bnoordhuis)
-* **Colin Ihrig** ([@cjihrig](https://github.com/cjihrig))
-  - GPG key: 94AE 3667 5C46 4D64 BAFA  68DD 7434 390B DBE9 B9C5 (pubkey-cjihrig)
-  - GPG key: 5735 3E0D BDAA A7E8 39B6  6A1A FF47 D5E4 AD8B 4FDC (pubkey-cjihrig-kb)
 * **Jameson Nash** ([@vtjnash](https://github.com/vtjnash))
   - GPG key: AEAD 0A4B 6867 6775 1A0E  4AEF 34A2 5FB1 2824 6514 (pubkey-vtjnash)
   - GPG key: CFBB 9CA9 A5BE AFD7 0E2B  3C5A 79A6 7C55 A367 9C8B (pubkey2022-vtjnash)
@@ -27,6 +24,9 @@ libuv is currently managed by the following individuals:
 * **Anna Henningsen** ([@addaleax](https://github.com/addaleax))
 * **Bartosz Sosnowski** ([@bzoz](https://github.com/bzoz))
 * **Bert Belder** ([@piscisaureus](https://github.com/piscisaureus))
+* **Colin Ihrig** ([@cjihrig](https://github.com/cjihrig))
+  - GPG key: 94AE 3667 5C46 4D64 BAFA  68DD 7434 390B DBE9 B9C5 (pubkey-cjihrig)
+  - GPG key: 5735 3E0D BDAA A7E8 39B6  6A1A FF47 D5E4 AD8B 4FDC (pubkey-cjihrig-kb)
 * **Fedor Indutny** ([@indutny](https://github.com/indutny))
   - GPG key: AF2E EA41 EC34 47BF DD86  FED9 D706 3CCE 19B7 E890 (pubkey-indutny)
 * **Imran Iqbal** ([@imran-iq](https://github.com/imran-iq))
diff --git a/deps/uv/Makefile.am b/deps/uv/Makefile.am
index 1dca3dd1f8a82e..a14228da3bf7b2 100644
--- a/deps/uv/Makefile.am
+++ b/deps/uv/Makefile.am
@@ -136,6 +136,12 @@ TESTS = test/run-tests
 check_PROGRAMS = test/run-tests
 test_run_tests_CFLAGS = $(AM_CFLAGS)
 
+if WINNT
+check-am: test/run-tests_no_ext
+test/run-tests_no_ext: test/run-tests$(EXEEXT)
+	cp test/run-tests$(EXEEXT) test/run-tests_no_ext
+endif
+
 if SUNOS
 # Can't be turned into a CC_CHECK_CFLAGS in configure.ac, it makes compilers
 # on other platforms complain that the argument is unused during compilation.
@@ -286,6 +292,7 @@ test_run_tests_SOURCES = test/blackhole-server.c \
                          test/test-thread-equal.c \
                          test/test-thread.c \
                          test/test-thread-affinity.c \
+                         test/test-thread-priority.c \
                          test/test-threadpool-cancel.c \
                          test/test-threadpool.c \
                          test/test-timer-again.c \
diff --git a/deps/uv/SECURITY.md b/deps/uv/SECURITY.md
new file mode 100644
index 00000000000000..32abba81544c22
--- /dev/null
+++ b/deps/uv/SECURITY.md
@@ -0,0 +1,27 @@
+# Security Policy
+
+## Supported Versions
+
+Currently, we are providing security updates for the latest release in the v1.x series:
+
+| Version | Supported          |
+| ------- | ------------------ |
+| Latest v1.x  | :white_check_mark: |
+
+## Reporting a Vulnerability
+
+If you believe you have found a security vulnerability in `libuv`, please use the [GitHub's private vulnerability reporting feature](https://docs.github.com/en/code-security/security-advisories/guidance-on-reporting-and-writing-information-about-vulnerabilities/privately-reporting-a-security-vulnerability#privately-reporting-a-security-vulnerability) in the [libuv repository](https://github.com/libuv/libuv) to report it to us.
+
+This will allow us to assess the risk, and make a fix available before we add a bug report to the GitHub repository.
+
+Please do:
+
+* Provide as much information as you can about the vulnerability.
+* Provide details about your configuration and environment, if applicable.
+
+Please do not:
+
+* Post any information about the vulnerability in public places.
+* Attempt to exploit the vulnerability yourself.
+
+We take all security bugs seriously. Thank you for improving the security of `libuv`. We appreciate your efforts and responsible disclosure and will make every effort to acknowledge your contributions.
\ No newline at end of file
diff --git a/deps/uv/configure.ac b/deps/uv/configure.ac
index 0a1042ce3d384f..d4cc003e34388d 100644
--- a/deps/uv/configure.ac
+++ b/deps/uv/configure.ac
@@ -13,7 +13,7 @@
 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 AC_PREREQ(2.57)
-AC_INIT([libuv], [1.47.0], [https://github.com/libuv/libuv/issues])
+AC_INIT([libuv], [1.48.0], [https://github.com/libuv/libuv/issues])
 AC_CONFIG_MACRO_DIR([m4])
 m4_include([m4/libuv-extra-automake-flags.m4])
 m4_include([m4/as_case.m4])
@@ -74,7 +74,7 @@ AM_CONDITIONAL([OS400],    [AS_CASE([$host_os],[os400],         [true], [false])
 AM_CONDITIONAL([SUNOS],    [AS_CASE([$host_os],[solaris*],      [true], [false])])
 AM_CONDITIONAL([WINNT],    [AS_CASE([$host_os],[mingw*],        [true], [false])])
 AS_CASE([$host_os],[mingw*], [
-    LIBS="$LIBS -lws2_32 -lpsapi -liphlpapi -lshell32 -luserenv -luser32 -ldbghelp -lole32 -luuid -lshell32"
+    LIBS="$LIBS -lws2_32 -lpsapi -liphlpapi -luserenv -luser32 -ldbghelp -lole32 -lshell32"
 ])
 AS_CASE([$host_os], [solaris2.10], [
     CFLAGS="$CFLAGS -DSUNOS_NO_IFADDRS"
diff --git a/deps/uv/docs/src/process.rst b/deps/uv/docs/src/process.rst
index 8acf7db3df3caf..8d2fdb3e47988d 100644
--- a/deps/uv/docs/src/process.rst
+++ b/deps/uv/docs/src/process.rst
@@ -85,7 +85,14 @@ Data types
             * option is only meaningful on Windows systems. On Unix it is silently
             * ignored.
             */
-            UV_PROCESS_WINDOWS_HIDE_GUI = (1 << 6)
+            UV_PROCESS_WINDOWS_HIDE_GUI = (1 << 6),
+            /*
+             * On Windows, if the path to the program to execute, specified in
+             * uv_process_options_t's file field, has a directory component,
+             * search for the exact file name before trying variants with
+             * extensions like '.exe' or '.cmd'.
+             */
+            UV_PROCESS_WINDOWS_FILE_PATH_EXACT_NAME = (1 << 7)
         };
 
 .. c:type:: uv_stdio_container_t
@@ -262,6 +269,9 @@ API
     .. versionchanged:: 1.24.0 Added `UV_PROCESS_WINDOWS_HIDE_CONSOLE` and
                         `UV_PROCESS_WINDOWS_HIDE_GUI` flags.
 
+    .. versionchanged:: 1.48.0 Added the
+                        `UV_PROCESS_WINDOWS_FILE_PATH_EXACT_NAME` flag.
+
 .. c:function:: int uv_process_kill(uv_process_t* handle, int signum)
 
     Sends the specified signal to the given process handle. Check the documentation
diff --git a/deps/uv/docs/src/threading.rst b/deps/uv/docs/src/threading.rst
index d379677a2113bd..883218fa829ccb 100644
--- a/deps/uv/docs/src/threading.rst
+++ b/deps/uv/docs/src/threading.rst
@@ -132,6 +132,21 @@ Threads
 .. c:function:: int uv_thread_join(uv_thread_t *tid)
 .. c:function:: int uv_thread_equal(const uv_thread_t* t1, const uv_thread_t* t2)
 
+.. c:function:: int uv_thread_setpriority(uv_thread_t tid, int priority)
+    If the function succeeds, the return value is 0.
+    If the function fails, the return value is less than zero.
+    Sets the scheduling priority of the thread specified by tid. It requires elevated
+    privilege to set specific priorities on some platforms.
+    The priority can be set to the following constants. UV_THREAD_PRIORITY_HIGHEST, 
+    UV_THREAD_PRIORITY_ABOVE_NORMAL, UV_THREAD_PRIORITY_NORMAL, 
+    UV_THREAD_PRIORITY_BELOW_NORMAL, UV_THREAD_PRIORITY_LOWEST.
+.. c:function:: int uv_thread_getpriority(uv_thread_t tid, int* priority)
+    If the function succeeds, the return value is 0.
+    If the function fails, the return value is less than zero.
+    Retrieves the scheduling priority of the thread specified by tid. The value in the
+    output parameter priority is platform dependent.
+    For Linux, when schedule policy is SCHED_OTHER (default), priority is 0.
+
 Thread-local storage
 ^^^^^^^^^^^^^^^^^^^^
 
diff --git a/deps/uv/include/uv.h b/deps/uv/include/uv.h
index 5642101c10c351..a62b3fa69b1087 100644
--- a/deps/uv/include/uv.h
+++ b/deps/uv/include/uv.h
@@ -1106,7 +1106,14 @@ enum uv_process_flags {
    * option is only meaningful on Windows systems. On Unix it is silently
    * ignored.
    */
-  UV_PROCESS_WINDOWS_HIDE_GUI = (1 << 6)
+  UV_PROCESS_WINDOWS_HIDE_GUI = (1 << 6),
+  /*
+   * On Windows, if the path to the program to execute, specified in
+   * uv_process_options_t's file field, has a directory component,
+   * search for the exact file name before trying variants with
+   * extensions like '.exe' or '.cmd'.
+   */
+  UV_PROCESS_WINDOWS_FILE_PATH_EXACT_NAME = (1 << 7)
 };
 
 /*
@@ -1284,6 +1291,17 @@ UV_EXTERN uv_pid_t uv_os_getppid(void);
 UV_EXTERN int uv_os_getpriority(uv_pid_t pid, int* priority);
 UV_EXTERN int uv_os_setpriority(uv_pid_t pid, int priority);
 
+enum {
+  UV_THREAD_PRIORITY_HIGHEST = 2,
+  UV_THREAD_PRIORITY_ABOVE_NORMAL = 1,
+  UV_THREAD_PRIORITY_NORMAL = 0,
+  UV_THREAD_PRIORITY_BELOW_NORMAL = -1,
+  UV_THREAD_PRIORITY_LOWEST = -2,
+};
+
+UV_EXTERN int uv_thread_getpriority(uv_thread_t tid, int* priority);
+UV_EXTERN int uv_thread_setpriority(uv_thread_t tid, int priority);
+
 UV_EXTERN unsigned int uv_available_parallelism(void);
 UV_EXTERN int uv_cpu_info(uv_cpu_info_t** cpu_infos, int* count);
 UV_EXTERN void uv_free_cpu_info(uv_cpu_info_t* cpu_infos, int count);
diff --git a/deps/uv/include/uv/unix.h b/deps/uv/include/uv/unix.h
index 09f88a5674280d..538f98b6c5d657 100644
--- a/deps/uv/include/uv/unix.h
+++ b/deps/uv/include/uv/unix.h
@@ -328,7 +328,10 @@ typedef struct {
 
 #define UV_TIMER_PRIVATE_FIELDS                                               \
   uv_timer_cb timer_cb;                                                       \
-  void* heap_node[3];                                                         \
+  union {                                                                     \
+    void* heap[3];                                                            \
+    struct uv__queue queue;                                                   \
+  } node;                                                                     \
   uint64_t timeout;                                                           \
   uint64_t repeat;                                                            \
   uint64_t start_id;
diff --git a/deps/uv/include/uv/version.h b/deps/uv/include/uv/version.h
index b17220fcf9090e..d6a61a10f7c4b5 100644
--- a/deps/uv/include/uv/version.h
+++ b/deps/uv/include/uv/version.h
@@ -31,7 +31,7 @@
  */
 
 #define UV_VERSION_MAJOR 1
-#define UV_VERSION_MINOR 47
+#define UV_VERSION_MINOR 48
 #define UV_VERSION_PATCH 0
 #define UV_VERSION_IS_RELEASE 1
 #define UV_VERSION_SUFFIX ""
diff --git a/deps/uv/include/uv/win.h b/deps/uv/include/uv/win.h
index 6f8c47298e407b..f4adaa216c6f0c 100644
--- a/deps/uv/include/uv/win.h
+++ b/deps/uv/include/uv/win.h
@@ -45,7 +45,7 @@ typedef struct pollfd {
 #endif
 
 #include <mswsock.h>
-// Disable the typedef in mstcpip.h of MinGW.
+/* Disable the typedef in mstcpip.h of MinGW. */
 #define _TCP_INITIAL_RTO_PARAMETERS _TCP_INITIAL_RTO_PARAMETERS__AVOID
 #define TCP_INITIAL_RTO_PARAMETERS TCP_INITIAL_RTO_PARAMETERS__AVOID
 #define PTCP_INITIAL_RTO_PARAMETERS PTCP_INITIAL_RTO_PARAMETERS__AVOID
@@ -70,7 +70,7 @@ typedef struct pollfd {
 # define S_IFLNK 0xA000
 #endif
 
-// Define missing in Windows Kit Include\{VERSION}\ucrt\sys\stat.h
+/* Define missing in Windows Kit Include\{VERSION}\ucrt\sys\stat.h */
 #if defined(_CRT_INTERNAL_NONSTDC_NAMES) && _CRT_INTERNAL_NONSTDC_NAMES && !defined(S_IFIFO)
 # define S_IFIFO _S_IFIFO
 #endif
@@ -550,7 +550,10 @@ typedef struct {
   unsigned char events;
 
 #define UV_TIMER_PRIVATE_FIELDS                                               \
-  void* heap_node[3];                                                         \
+  union {                                                                     \
+    void* heap[3];                                                            \
+    struct uv__queue queue;                                                   \
+  } node;                                                                     \
   int unused;                                                                 \
   uint64_t timeout;                                                           \
   uint64_t repeat;                                                            \
diff --git a/deps/uv/src/idna.c b/deps/uv/src/idna.c
index 1c0a60cf3e3bec..efc5f283ce2ef9 100644
--- a/deps/uv/src/idna.c
+++ b/deps/uv/src/idna.c
@@ -322,6 +322,9 @@ ssize_t uv__idna_toascii(const char* s, const char* se, char* d, char* de) {
   char* ds;
   int rc;
 
+  if (s == se)
+    return UV_EINVAL;
+
   ds = d;
 
   si = s;
@@ -356,9 +359,10 @@ ssize_t uv__idna_toascii(const char* s, const char* se, char* d, char* de) {
       return rc;
   }
 
-  if (d < de)
-    *d++ = '\0';
+  if (d >= de)
+    return UV_EINVAL;
 
+  *d++ = '\0';
   return d - ds;  /* Number of bytes written. */
 }
 
@@ -400,6 +404,7 @@ void uv_wtf8_to_utf16(const char* source_ptr,
     }
   } while (*source_ptr++);
 
+  (void)w_target_len;
   assert(w_target_len == 0);
 }
 
diff --git a/deps/uv/src/timer.c b/deps/uv/src/timer.c
index bc680e71a9ef04..4525199ddc18c4 100644
--- a/deps/uv/src/timer.c
+++ b/deps/uv/src/timer.c
@@ -40,8 +40,8 @@ static int timer_less_than(const struct heap_node* ha,
   const uv_timer_t* a;
   const uv_timer_t* b;
 
-  a = container_of(ha, uv_timer_t, heap_node);
-  b = container_of(hb, uv_timer_t, heap_node);
+  a = container_of(ha, uv_timer_t, node.heap);
+  b = container_of(hb, uv_timer_t, node.heap);
 
   if (a->timeout < b->timeout)
     return 1;
@@ -60,6 +60,7 @@ int uv_timer_init(uv_loop_t* loop, uv_timer_t* handle) {
   handle->timer_cb = NULL;
   handle->timeout = 0;
   handle->repeat = 0;
+  uv__queue_init(&handle->node.queue);
   return 0;
 }
 
@@ -73,8 +74,7 @@ int uv_timer_start(uv_timer_t* handle,
   if (uv__is_closing(handle) || cb == NULL)
     return UV_EINVAL;
 
-  if (uv__is_active(handle))
-    uv_timer_stop(handle);
+  uv_timer_stop(handle);
 
   clamped_timeout = handle->loop->time + timeout;
   if (clamped_timeout < timeout)
@@ -87,7 +87,7 @@ int uv_timer_start(uv_timer_t* handle,
   handle->start_id = handle->loop->timer_counter++;
 
   heap_insert(timer_heap(handle->loop),
-              (struct heap_node*) &handle->heap_node,
+              (struct heap_node*) &handle->node.heap,
               timer_less_than);
   uv__handle_start(handle);
 
@@ -96,14 +96,16 @@ int uv_timer_start(uv_timer_t* handle,
 
 
 int uv_timer_stop(uv_timer_t* handle) {
-  if (!uv__is_active(handle))
-    return 0;
-
-  heap_remove(timer_heap(handle->loop),
-              (struct heap_node*) &handle->heap_node,
-              timer_less_than);
-  uv__handle_stop(handle);
+  if (uv__is_active(handle)) {
+    heap_remove(timer_heap(handle->loop),
+                (struct heap_node*) &handle->node.heap,
+                timer_less_than);
+    uv__handle_stop(handle);
+  } else {
+    uv__queue_remove(&handle->node.queue);
+  }
 
+  uv__queue_init(&handle->node.queue);
   return 0;
 }
 
@@ -148,7 +150,7 @@ int uv__next_timeout(const uv_loop_t* loop) {
   if (heap_node == NULL)
     return -1; /* block indefinitely */
 
-  handle = container_of(heap_node, uv_timer_t, heap_node);
+  handle = container_of(heap_node, uv_timer_t, node.heap);
   if (handle->timeout <= loop->time)
     return 0;
 
@@ -163,17 +165,30 @@ int uv__next_timeout(const uv_loop_t* loop) {
 void uv__run_timers(uv_loop_t* loop) {
   struct heap_node* heap_node;
   uv_timer_t* handle;
+  struct uv__queue* queue_node;
+  struct uv__queue ready_queue;
+
+  uv__queue_init(&ready_queue);
 
   for (;;) {
     heap_node = heap_min(timer_heap(loop));
     if (heap_node == NULL)
       break;
 
-    handle = container_of(heap_node, uv_timer_t, heap_node);
+    handle = container_of(heap_node, uv_timer_t, node.heap);
     if (handle->timeout > loop->time)
       break;
 
     uv_timer_stop(handle);
+    uv__queue_insert_tail(&ready_queue, &handle->node.queue);
+  }
+
+  while (!uv__queue_empty(&ready_queue)) {
+    queue_node = uv__queue_head(&ready_queue);
+    uv__queue_remove(queue_node);
+    uv__queue_init(queue_node);
+    handle = container_of(queue_node, uv_timer_t, node.queue);
+
     uv_timer_again(handle);
     handle->timer_cb(handle);
   }
diff --git a/deps/uv/src/unix/core.c b/deps/uv/src/unix/core.c
index 25c5181f370e94..965e7f775250cf 100644
--- a/deps/uv/src/unix/core.c
+++ b/deps/uv/src/unix/core.c
@@ -90,6 +90,7 @@ extern char** environ;
 #if defined(__linux__)
 # include <sched.h>
 # include <sys/syscall.h>
+# define gettid() syscall(SYS_gettid)
 # define uv__accept4 accept4
 #endif
 
@@ -1557,6 +1558,130 @@ int uv_os_setpriority(uv_pid_t pid, int priority) {
   return 0;
 }
 
+/**
+ * If the function succeeds, the return value is 0.
+ * If the function fails, the return value is non-zero.
+ * for Linux, when schedule policy is SCHED_OTHER (default), priority is 0.
+ * So the output parameter priority is actually the nice value.
+*/
+int uv_thread_getpriority(uv_thread_t tid, int* priority) {
+  int r;
+  int policy;
+  struct sched_param param;
+#ifdef __linux__
+  pid_t pid = gettid();
+#endif
+
+  if (priority == NULL)
+    return UV_EINVAL;
+
+  r = pthread_getschedparam(tid, &policy, &param);
+  if (r != 0)
+    return UV__ERR(errno);
+
+#ifdef __linux__
+  if (SCHED_OTHER == policy && pthread_equal(tid, pthread_self())) {
+    errno = 0;
+    r = getpriority(PRIO_PROCESS, pid);
+    if (r == -1 && errno != 0)
+      return UV__ERR(errno);
+    *priority = r;
+    return 0;
+  }
+#endif
+
+  *priority = param.sched_priority;
+  return 0;
+}
+
+#ifdef __linux__
+static int set_nice_for_calling_thread(int priority) {
+  int r;
+  int nice;
+
+  if (priority < UV_THREAD_PRIORITY_LOWEST || priority > UV_THREAD_PRIORITY_HIGHEST)
+    return UV_EINVAL;
+
+  pid_t pid = gettid();
+  nice = 0 - priority * 2;
+  r = setpriority(PRIO_PROCESS, pid, nice);
+  if (r != 0)
+    return UV__ERR(errno);
+  return 0;
+}
+#endif
+
+/**
+ * If the function succeeds, the return value is 0.
+ * If the function fails, the return value is non-zero.
+*/
+int uv_thread_setpriority(uv_thread_t tid, int priority) {
+  int r;
+  int min;
+  int max;
+  int range;
+  int prio;
+  int policy;
+  struct sched_param param;
+
+  if (priority < UV_THREAD_PRIORITY_LOWEST || priority > UV_THREAD_PRIORITY_HIGHEST)
+    return UV_EINVAL;
+
+  r = pthread_getschedparam(tid, &policy, &param);
+  if (r != 0)
+    return UV__ERR(errno);
+
+#ifdef __linux__
+/**
+ * for Linux, when schedule policy is SCHED_OTHER (default), priority must be 0,
+ * we should set the nice value in this case.
+*/
+  if (SCHED_OTHER == policy && pthread_equal(tid, pthread_self()))
+    return set_nice_for_calling_thread(priority);
+#endif
+
+#ifdef __PASE__
+  min = 1;
+  max = 127;
+#else
+  min = sched_get_priority_min(policy);
+  max = sched_get_priority_max(policy);
+#endif
+
+  if (min == -1 || max == -1)
+    return UV__ERR(errno);
+
+  range = max - min;
+
+  switch (priority) {
+    case UV_THREAD_PRIORITY_HIGHEST:
+      prio = max;
+      break;
+    case UV_THREAD_PRIORITY_ABOVE_NORMAL:
+      prio = min + range * 3 / 4;
+      break;
+    case UV_THREAD_PRIORITY_NORMAL:
+      prio = min + range / 2;
+      break;
+    case UV_THREAD_PRIORITY_BELOW_NORMAL:
+      prio = min + range / 4;
+      break;
+    case UV_THREAD_PRIORITY_LOWEST:
+      prio = min;
+      break;
+    default:
+      return 0;
+  }
+
+  if (param.sched_priority != prio) {
+    param.sched_priority = prio;
+    r = pthread_setschedparam(tid, policy, &param);
+    if (r != 0)
+      return UV__ERR(errno);  
+  }
+
+  return 0;
+}
 
 int uv_os_uname(uv_utsname_t* buffer) {
   struct utsname buf;
diff --git a/deps/uv/src/unix/fs.c b/deps/uv/src/unix/fs.c
index 891306daedcc6a..3a74350f0e5ab6 100644
--- a/deps/uv/src/unix/fs.c
+++ b/deps/uv/src/unix/fs.c
@@ -84,7 +84,9 @@
 
 #if defined(__CYGWIN__) ||                                                    \
     (defined(__HAIKU__) && B_HAIKU_VERSION < B_HAIKU_VERSION_1_PRE_BETA_5) || \
-    (defined(__sun) && !defined(__illumos__))
+    (defined(__sun) && !defined(__illumos__)) ||                              \
+    (defined(__APPLE__) && !TARGET_OS_IPHONE &&                               \
+     MAC_OS_X_VERSION_MIN_REQUIRED < 110000)
 #define preadv(fd, bufs, nbufs, off)                                          \
   pread(fd, (bufs)->iov_base, (bufs)->iov_len, off)
 #define pwritev(fd, bufs, nbufs, off)                                         \
@@ -1628,6 +1630,16 @@ static void uv__fs_done(struct uv__work* w, int status) {
 }
 
 
+void uv__fs_post(uv_loop_t* loop, uv_fs_t* req) {
+  uv__req_register(loop, req);
+  uv__work_submit(loop,
+                  &req->work_req,
+                  UV__WORK_FAST_IO,
+                  uv__fs_work,
+                  uv__fs_done);
+}
+
+
 int uv_fs_access(uv_loop_t* loop,
                  uv_fs_t* req,
                  const char* path,
diff --git a/deps/uv/src/unix/internal.h b/deps/uv/src/unix/internal.h
index fe5885136039d5..bcb3be577e5849 100644
--- a/deps/uv/src/unix/internal.h
+++ b/deps/uv/src/unix/internal.h
@@ -425,6 +425,7 @@ UV_UNUSED(static int uv__stat(const char* path, struct stat* s)) {
 }
 
 #if defined(__linux__)
+void uv__fs_post(uv_loop_t* loop, uv_fs_t* req);
 ssize_t
 uv__fs_copy_file_range(int fd_in,
                        off_t* off_in,
diff --git a/deps/uv/src/unix/kqueue.c b/deps/uv/src/unix/kqueue.c
index 94ace58680cf39..4d09edc06a0972 100644
--- a/deps/uv/src/unix/kqueue.c
+++ b/deps/uv/src/unix/kqueue.c
@@ -488,11 +488,21 @@ static void uv__fs_event(uv_loop_t* loop, uv__io_t* w, unsigned int fflags) {
    * the struct's kf_structsize must be initialised beforehand
    * whether with the KINFO_FILE_SIZE constant or this way.
    */
+  struct stat statbuf;
   struct kinfo_file kf;
-  kf.kf_structsize = sizeof(kf);
 
-  if (fcntl(handle->event_watcher.fd, F_KINFO, &kf) == 0)
-    path = uv__basename_r(kf.kf_path);
+  if (handle->event_watcher.fd != -1 &&
+     (!uv__fstat(handle->event_watcher.fd, &statbuf) && !(statbuf.st_mode & S_IFDIR))) {
+     /* we are purposely not using KINFO_FILE_SIZE here
+      * as it is not available on non intl archs
+      * and here it gives 1392 too on intel.
+      * anyway, the man page also mentions we can proceed
+      * this way.
+      */
+     kf.kf_structsize = sizeof(kf);
+     if (fcntl(handle->event_watcher.fd, F_KINFO, &kf) == 0)
+       path = uv__basename_r(kf.kf_path);
+  }
 #endif
   handle->cb(handle, path, events, 0);
 
diff --git a/deps/uv/src/unix/linux.c b/deps/uv/src/unix/linux.c
index 8eeb352e6238a9..4164e90dbb0a39 100644
--- a/deps/uv/src/unix/linux.c
+++ b/deps/uv/src/unix/linux.c
@@ -37,12 +37,16 @@
 #include <errno.h>
 
 #include <fcntl.h>
+#include <ifaddrs.h>
+#include <net/ethernet.h>
 #include <net/if.h>
+#include <netpacket/packet.h>
 #include <sys/epoll.h>
 #include <sys/inotify.h>
 #include <sys/mman.h>
 #include <sys/param.h>
 #include <sys/prctl.h>
+#include <sys/socket.h>
 #include <sys/stat.h>
 #include <sys/syscall.h>
 #include <sys/sysinfo.h>
@@ -120,25 +124,6 @@
 # endif
 #endif /* __NR_getrandom */
 
-#define HAVE_IFADDRS_H 1
-
-# if defined(__ANDROID_API__) && __ANDROID_API__ < 24
-# undef HAVE_IFADDRS_H
-#endif
-
-#ifdef __UCLIBC__
-# if __UCLIBC_MAJOR__ < 0 && __UCLIBC_MINOR__ < 9 && __UCLIBC_SUBLEVEL__ < 32
-#  undef HAVE_IFADDRS_H
-# endif
-#endif
-
-#ifdef HAVE_IFADDRS_H
-# include <ifaddrs.h>
-# include <sys/socket.h>
-# include <net/ethernet.h>
-# include <netpacket/packet.h>
-#endif /* HAVE_IFADDRS_H */
-
 enum {
   UV__IORING_SETUP_SQPOLL = 2u,
 };
@@ -478,6 +463,9 @@ static int uv__use_io_uring(void) {
 #elif defined(__arm__) && __SIZEOF_POINTER__ == 4
   /* See https://github.com/libuv/libuv/issues/4158. */
   return 0;  /* All 32 bits kernels appear buggy. */
+#elif defined(__powerpc64__) || defined(__ppc64__)
+  /* See https://github.com/libuv/libuv/issues/4283. */
+  return 0; /* Random SIGSEGV in signal handler. */
 #else
   /* Ternary: unknown=0, yes=1, no=-1 */
   static _Atomic int use_io_uring;
@@ -487,8 +475,16 @@ static int uv__use_io_uring(void) {
   use = atomic_load_explicit(&use_io_uring, memory_order_relaxed);
 
   if (use == 0) {
+    use = uv__kernel_version() >=
+#if defined(__hppa__)
+    /* io_uring first supported on parisc in 6.1, functional in .51 */
+    /* https://lore.kernel.org/all/cb912694-b1fe-dbb0-4d8c-d608f3526905@gmx.de/ */
+    /* 6.1.51 */ 0x060133
+#else
     /* Older kernels have a bug where the sqpoll thread uses 100% CPU. */
-    use = uv__kernel_version() >= /* 5.10.186 */ 0x050ABA ? 1 : -1;
+    /* 5.10.186 */ 0x050ABA
+#endif
+    ? 1 : -1;
 
     /* But users can still enable it if they so desire. */
     val = getenv("UV_USE_IO_URING");
@@ -1162,6 +1158,12 @@ static void uv__poll_io_uring(uv_loop_t* loop, struct uv__iou* iou) {
     uv__req_unregister(loop, req);
     iou->in_flight--;
 
+    /* If the op is not supported by the kernel retry using the thread pool */
+    if (e->res == -EOPNOTSUPP) {
+      uv__fs_post(loop, req);
+      continue;
+    }
+
     /* io_uring stores error codes as negative numbers, same as libuv. */
     req->result = e->res;
 
@@ -1908,7 +1910,6 @@ int uv_cpu_info(uv_cpu_info_t** ci, int* count) {
 }
 
 
-#ifdef HAVE_IFADDRS_H
 static int uv__ifaddr_exclude(struct ifaddrs *ent, int exclude_type) {
   if (!((ent->ifa_flags & IFF_UP) && (ent->ifa_flags & IFF_RUNNING)))
     return 1;
@@ -1922,14 +1923,8 @@ static int uv__ifaddr_exclude(struct ifaddrs *ent, int exclude_type) {
     return exclude_type;
   return !exclude_type;
 }
-#endif
 
 int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
-#ifndef HAVE_IFADDRS_H
-  *count = 0;
-  *addresses = NULL;
-  return UV_ENOSYS;
-#else
   struct ifaddrs *addrs, *ent;
   uv_interface_address_t* address;
   int i;
@@ -2008,7 +2003,6 @@ int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
   freeifaddrs(addrs);
 
   return 0;
-#endif
 }
 
 
diff --git a/deps/uv/src/unix/pipe.c b/deps/uv/src/unix/pipe.c
index d332f3518303d6..fca364426f809e 100644
--- a/deps/uv/src/unix/pipe.c
+++ b/deps/uv/src/unix/pipe.c
@@ -30,6 +30,19 @@
 #include <stdlib.h>
 
 
+/* Does the file path contain embedded nul bytes? */
+static int includes_nul(const char *s, size_t n) {
+  if (n == 0)
+    return 0;
+#ifdef __linux__
+  /* Accept abstract socket namespace path ("\0/virtual/path"). */
+  s++;
+  n--;
+#endif
+  return NULL != memchr(s, '\0', n);
+}
+
+
 int uv_pipe_init(uv_loop_t* loop, uv_pipe_t* handle, int ipc) {
   uv__stream_init(loop, (uv_stream_t*)handle, UV_NAMED_PIPE);
   handle->shutdown_req = NULL;
@@ -53,6 +66,7 @@ int uv_pipe_bind2(uv_pipe_t* handle,
   char* pipe_fname;
   int sockfd;
   int err;
+  socklen_t addrlen;
 
   pipe_fname = NULL;
 
@@ -65,11 +79,8 @@ int uv_pipe_bind2(uv_pipe_t* handle,
   if (namelen == 0)
     return UV_EINVAL;
 
-#ifndef __linux__
-  /* Abstract socket namespace only works on Linux. */
-  if (*name == '\0')
+  if (includes_nul(name, namelen))
     return UV_EINVAL;
-#endif
 
   if (flags & UV_PIPE_NO_TRUNCATE)
     if (namelen > sizeof(saddr.sun_path))
@@ -90,10 +101,15 @@ int uv_pipe_bind2(uv_pipe_t* handle,
    * We unlink the file later but abstract sockets disappear
    * automatically since they're not real file system entities.
    */
-  if (*name != '\0') {
-    pipe_fname = uv__strdup(name);
+  if (*name == '\0') {
+    addrlen = offsetof(struct sockaddr_un, sun_path) + namelen;
+  } else {
+    pipe_fname = uv__malloc(namelen + 1);
     if (pipe_fname == NULL)
       return UV_ENOMEM;
+    memcpy(pipe_fname, name, namelen);
+    pipe_fname[namelen] = '\0';
+    addrlen = sizeof saddr;
   }
 
   err = uv__socket(AF_UNIX, SOCK_STREAM, 0);
@@ -105,7 +121,7 @@ int uv_pipe_bind2(uv_pipe_t* handle,
   memcpy(&saddr.sun_path, name, namelen);
   saddr.sun_family = AF_UNIX;
 
-  if (bind(sockfd, (struct sockaddr*)&saddr, sizeof saddr)) {
+  if (bind(sockfd, (struct sockaddr*)&saddr, addrlen)) {
     err = UV__ERR(errno);
     /* Convert ENOENT to EACCES for compatibility with Windows. */
     if (err == UV_ENOENT)
@@ -117,7 +133,7 @@ int uv_pipe_bind2(uv_pipe_t* handle,
 
   /* Success. */
   handle->flags |= UV_HANDLE_BOUND;
-  handle->pipe_fname = pipe_fname; /* NULL or a strdup'ed copy. */
+  handle->pipe_fname = pipe_fname; /* NULL or a copy of |name| */
   handle->io_watcher.fd = sockfd;
   return 0;
 
@@ -210,7 +226,22 @@ void uv_pipe_connect(uv_connect_t* req,
                     uv_pipe_t* handle,
                     const char* name,
                     uv_connect_cb cb) {
-  uv_pipe_connect2(req, handle, name, strlen(name), 0, cb);
+  int err;
+
+  err = uv_pipe_connect2(req, handle, name, strlen(name), 0, cb);
+
+  if (err) {
+    handle->delayed_error = err;
+    handle->connect_req = req;
+
+    uv__req_init(handle->loop, req, UV_CONNECT);
+    req->handle = (uv_stream_t*) handle;
+    req->cb = cb;
+    uv__queue_init(&req->queue);
+
+    /* Force callback to run on next tick in case of error. */
+    uv__io_feed(handle->loop, &handle->io_watcher);
+  }
 }
 
 
@@ -224,6 +255,7 @@ int uv_pipe_connect2(uv_connect_t* req,
   int new_sock;
   int err;
   int r;
+  socklen_t addrlen;
 
   if (flags & ~UV_PIPE_NO_TRUNCATE)
     return UV_EINVAL;
@@ -234,11 +266,8 @@ int uv_pipe_connect2(uv_connect_t* req,
   if (namelen == 0)
     return UV_EINVAL;
 
-#ifndef __linux__
-  /* Abstract socket namespace only works on Linux. */
-  if (*name == '\0')
+  if (includes_nul(name, namelen))
     return UV_EINVAL;
-#endif
 
   if (flags & UV_PIPE_NO_TRUNCATE)
     if (namelen > sizeof(saddr.sun_path))
@@ -261,9 +290,13 @@ int uv_pipe_connect2(uv_connect_t* req,
   memcpy(&saddr.sun_path, name, namelen);
   saddr.sun_family = AF_UNIX;
 
+  if (*name == '\0')
+    addrlen = offsetof(struct sockaddr_un, sun_path) + namelen;
+  else
+    addrlen = sizeof saddr;
+
   do {
-    r = connect(uv__stream_fd(handle),
-                (struct sockaddr*)&saddr, sizeof saddr);
+    r = connect(uv__stream_fd(handle), (struct sockaddr*)&saddr, addrlen);
   }
   while (r == -1 && errno == EINTR);
 
@@ -295,7 +328,7 @@ int uv_pipe_connect2(uv_connect_t* req,
   handle->connect_req = req;
 
   uv__req_init(handle->loop, req, UV_CONNECT);
-  req->handle = (uv_stream_t*)handle;
+  req->handle = (uv_stream_t*) handle;
   req->cb = cb;
   uv__queue_init(&req->queue);
 
diff --git a/deps/uv/src/unix/process.c b/deps/uv/src/unix/process.c
index dd58c18d9b9359..4812a90f2f5047 100644
--- a/deps/uv/src/unix/process.c
+++ b/deps/uv/src/unix/process.c
@@ -972,6 +972,7 @@ int uv_spawn(uv_loop_t* loop,
   assert(!(options->flags & ~(UV_PROCESS_DETACHED |
                               UV_PROCESS_SETGID |
                               UV_PROCESS_SETUID |
+                              UV_PROCESS_WINDOWS_FILE_PATH_EXACT_NAME |
                               UV_PROCESS_WINDOWS_HIDE |
                               UV_PROCESS_WINDOWS_HIDE_CONSOLE |
                               UV_PROCESS_WINDOWS_HIDE_GUI |
diff --git a/deps/uv/src/unix/tcp.c b/deps/uv/src/unix/tcp.c
index a02b6bbf88ef3a..799fca77aa5392 100644
--- a/deps/uv/src/unix/tcp.c
+++ b/deps/uv/src/unix/tcp.c
@@ -220,21 +220,40 @@ static int uv__is_ipv6_link_local(const struct sockaddr* addr) {
 
 
 static int uv__ipv6_link_local_scope_id(void) {
-/* disable link local on AIX & PASE for now */
+  struct sockaddr_in6* a6;
+  int rv;
 #if defined(_AIX)
-  return 0;
+  /* AIX & IBM i do not have ifaddrs
+   * so fallback to use uv_interface_addresses */
+  uv_interface_address_t* interfaces;
+  uv_interface_address_t* ifa;
+  int count, i;
+
+  if (uv_interface_addresses(&interfaces, &count))
+    return 0;
+
+  rv = 0;
+
+  for (ifa = interfaces; ifa != &interfaces[count]; ifa++) {
+    if (uv__is_ipv6_link_local((struct sockaddr*) &ifa->address)) {
+      rv = ifa->address.address6.sin6_scope_id;
+      break;
+    }
+  }
+
+  uv_free_interface_addresses(interfaces, count);
+
 #else
-  struct sockaddr_in6* a6;
   struct ifaddrs* ifa;
   struct ifaddrs* p;
-  int rv;
 
   if (getifaddrs(&ifa))
     return 0;
 
   for (p = ifa; p != NULL; p = p->ifa_next)
-    if (uv__is_ipv6_link_local(p->ifa_addr))
-      break;
+    if (p->ifa_addr != NULL)
+      if (uv__is_ipv6_link_local(p->ifa_addr))
+        break;
 
   rv = 0;
   if (p != NULL) {
@@ -243,8 +262,9 @@ static int uv__ipv6_link_local_scope_id(void) {
   }
 
   freeifaddrs(ifa);
+#endif /* defined(_AIX) */
+
   return rv;
-#endif
 }
 
 
@@ -433,26 +453,91 @@ int uv__tcp_nodelay(int fd, int on) {
 
 
 int uv__tcp_keepalive(int fd, int on, unsigned int delay) {
+  int idle;
   int intvl;
   int cnt;
 
+  (void) &idle;
   (void) &intvl;
   (void) &cnt;
-    
+
   if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &on, sizeof(on)))
     return UV__ERR(errno);
 
   if (!on)
     return 0;
 
+  if (delay == 0)
+    return -1;
+
+#ifdef __sun
+  /* The implementation of TCP keep-alive on Solaris/SmartOS is a bit unusual
+   * compared to other Unix-like systems.
+   * Thus, we need to specialize it on Solaris.
+   *
+   * There are two keep-alive mechanisms on Solaris:
+   * - By default, the first keep-alive probe is sent out after a TCP connection is idle for two hours.
+   * If the peer does not respond to the probe within eight minutes, the TCP connection is aborted.
+   * You can alter the interval for sending out the first probe using the socket option TCP_KEEPALIVE_THRESHOLD
+   * in milliseconds or TCP_KEEPIDLE in seconds.
+   * The system default is controlled by the TCP ndd parameter tcp_keepalive_interval. The minimum value is ten seconds.
+   * The maximum is ten days, while the default is two hours. If you receive no response to the probe,
+   * you can use the TCP_KEEPALIVE_ABORT_THRESHOLD socket option to change the time threshold for aborting a TCP connection.
+   * The option value is an unsigned integer in milliseconds. The value zero indicates that TCP should never time out and
+   * abort the connection when probing. The system default is controlled by the TCP ndd parameter tcp_keepalive_abort_interval.
+   * The default is eight minutes.
+   *
+   * - The second implementation is activated if socket option TCP_KEEPINTVL and/or TCP_KEEPCNT are set.
+   * The time between each consequent probes is set by TCP_KEEPINTVL in seconds.
+   * The minimum value is ten seconds. The maximum is ten days, while the default is two hours.
+   * The TCP connection will be aborted after certain amount of probes, which is set by TCP_KEEPCNT, without receiving response.
+   */
+
+  idle = delay;
+  /* Kernel expects at least 10 seconds. */
+  if (idle < 10)
+    idle = 10;
+  /* Kernel expects at most 10 days. */
+  if (idle > 10*24*60*60)
+    idle = 10*24*60*60;
+
+  /* `TCP_KEEPIDLE`, `TCP_KEEPINTVL`, and `TCP_KEEPCNT` were not available on Solaris
+   * until version 11.4, but let's take a chance here. */
+#if defined(TCP_KEEPIDLE) && defined(TCP_KEEPINTVL) && defined(TCP_KEEPCNT)
+  if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPIDLE, &idle, sizeof(idle)))
+    return UV__ERR(errno);
+
+  intvl = idle/3;
+  if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPINTVL, &intvl, sizeof(intvl)))
+    return UV__ERR(errno);
+
+  cnt = 3;
+  if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPCNT, &cnt, sizeof(cnt)))
+    return UV__ERR(errno);
+#else
+  /* Fall back to the first implementation of tcp-alive mechanism for older Solaris,
+   * simulate the tcp-alive mechanism on other platforms via `TCP_KEEPALIVE_THRESHOLD` + `TCP_KEEPALIVE_ABORT_THRESHOLD`.
+   */
+  idle *= 1000; /* kernel expects milliseconds */
+  if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPALIVE_THRESHOLD, &idle, sizeof(idle)))
+    return UV__ERR(errno);
+
+  /* Note that the consequent probes will not be sent at equal intervals on Solaris,
+   * but will be sent using the exponential backoff algorithm. */
+  intvl = idle/3;
+  cnt = 3;
+  int time_to_abort = intvl * cnt;
+  if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPALIVE_ABORT_THRESHOLD, &time_to_abort, sizeof(time_to_abort)))
+    return UV__ERR(errno);
+#endif
+
+#else  /* !defined(__sun) */
+
 #ifdef TCP_KEEPIDLE
   if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPIDLE, &delay, sizeof(delay)))
     return UV__ERR(errno);
-/* Solaris/SmartOS, if you don't support keep-alive,
- * then don't advertise it in your system headers...
- */
-/* FIXME(bnoordhuis) That's possibly because sizeof(delay) should be 1. */
-#elif defined(TCP_KEEPALIVE) && !defined(__sun)
+#elif defined(TCP_KEEPALIVE)
+  /* Darwin/macOS uses TCP_KEEPALIVE in place of TCP_KEEPIDLE. */
   if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPALIVE, &delay, sizeof(delay)))
     return UV__ERR(errno);
 #endif
@@ -469,6 +554,7 @@ int uv__tcp_keepalive(int fd, int on, unsigned int delay) {
     return UV__ERR(errno);
 #endif
 
+#endif  /* !defined(__sun) */
   return 0;
 }
 
diff --git a/deps/uv/src/win/fs-event.c b/deps/uv/src/win/fs-event.c
index 4a0ca1f70a22b6..fce411813e9370 100644
--- a/deps/uv/src/win/fs-event.c
+++ b/deps/uv/src/win/fs-event.c
@@ -114,7 +114,7 @@ static int uv__split_path(const WCHAR* filename, WCHAR** dir,
       }
     }
 
-    *file = wcsdup(filename);
+    *file = _wcsdup(filename);
   } else {
     if (dir) {
       *dir = (WCHAR*)uv__malloc((i + 2) * sizeof(WCHAR));
diff --git a/deps/uv/src/win/fs.c b/deps/uv/src/win/fs.c
index 99c8a2bf8bf124..b73c17d8c1c831 100644
--- a/deps/uv/src/win/fs.c
+++ b/deps/uv/src/win/fs.c
@@ -407,8 +407,8 @@ void fs__open(uv_fs_t* req) {
 
   /* Obtain the active umask. umask() never fails and returns the previous
    * umask. */
-  current_umask = umask(0);
-  umask(current_umask);
+  current_umask = _umask(0);
+  _umask(current_umask);
 
   /* convert flags and mode to CreateFile parameters */
   switch (flags & (UV_FS_O_RDONLY | UV_FS_O_WRONLY | UV_FS_O_RDWR)) {
diff --git a/deps/uv/src/win/pipe.c b/deps/uv/src/win/pipe.c
index cec72ff750b5a1..3c8abe1c28ce36 100644
--- a/deps/uv/src/win/pipe.c
+++ b/deps/uv/src/win/pipe.c
@@ -98,6 +98,14 @@ static void eof_timer_destroy(uv_pipe_t* pipe);
 static void eof_timer_close_cb(uv_handle_t* handle);
 
 
+/* Does the file path contain embedded nul bytes? */
+static int includes_nul(const char *s, size_t n) {
+  if (n == 0)
+    return 0;
+  return NULL != memchr(s, '\0', n);
+}
+
+
 static void uv__unique_pipe_name(char* ptr, char* name, size_t size) {
   snprintf(name, size, "\\\\?\\pipe\\uv\\%p-%lu", ptr, GetCurrentProcessId());
 }
@@ -191,7 +199,7 @@ static void close_pipe(uv_pipe_t* pipe) {
   if (pipe->u.fd == -1)
     CloseHandle(pipe->handle);
   else
-    close(pipe->u.fd);
+    _close(pipe->u.fd);
 
   pipe->u.fd = -1;
   pipe->handle = INVALID_HANDLE_VALUE;
@@ -705,6 +713,7 @@ int uv_pipe_bind2(uv_pipe_t* handle,
   uv_loop_t* loop = handle->loop;
   int i, err;
   uv_pipe_accept_t* req;
+  char* name_copy;
 
   if (flags & ~UV_PIPE_NO_TRUNCATE) {
     return UV_EINVAL;
@@ -718,16 +727,10 @@ int uv_pipe_bind2(uv_pipe_t* handle,
     return UV_EINVAL;
   }
 
-  if (*name == '\0') {
+  if (includes_nul(name, namelen)) {
     return UV_EINVAL;
   }
 
-  if (flags & UV_PIPE_NO_TRUNCATE) {
-    if (namelen > 256) {
-      return UV_EINVAL;
-    }
-  }
-
   if (handle->flags & UV_HANDLE_BOUND) {
     return UV_EINVAL;
   }
@@ -736,14 +739,24 @@ int uv_pipe_bind2(uv_pipe_t* handle,
     return UV_EINVAL;
   }
 
+  name_copy = uv__malloc(namelen + 1);
+  if (name_copy == NULL) {
+    return UV_ENOMEM;
+  }
+
+  memcpy(name_copy, name, namelen);
+  name_copy[namelen] = '\0';
+
   if (!(handle->flags & UV_HANDLE_PIPESERVER)) {
     handle->pipe.serv.pending_instances = default_pending_pipe_instances;
   }
 
+  err = UV_ENOMEM;
   handle->pipe.serv.accept_reqs = (uv_pipe_accept_t*)
     uv__malloc(sizeof(uv_pipe_accept_t) * handle->pipe.serv.pending_instances);
-  if (!handle->pipe.serv.accept_reqs)
-    return UV_ENOMEM;
+  if (handle->pipe.serv.accept_reqs == NULL) {
+    goto error;
+  }
 
   for (i = 0; i < handle->pipe.serv.pending_instances; i++) {
     req = &handle->pipe.serv.accept_reqs[i];
@@ -753,9 +766,14 @@ int uv_pipe_bind2(uv_pipe_t* handle,
     req->next_pending = NULL;
   }
 
-  err = uv__convert_utf8_to_utf16(name, &handle->name);
-  if (err)
-    return err;
+  /* TODO(bnoordhuis) Add converters that take a |length| parameter. */
+  err = uv__convert_utf8_to_utf16(name_copy, &handle->name);
+  uv__free(name_copy);
+  name_copy = NULL;
+
+  if (err) {
+    goto error;
+  }
 
   /*
    * Attempt to create the first pipe with FILE_FLAG_FIRST_PIPE_INSTANCE.
@@ -767,9 +785,11 @@ int uv_pipe_bind2(uv_pipe_t* handle,
                          TRUE)) {
     err = GetLastError();
     if (err == ERROR_ACCESS_DENIED) {
-      err = WSAEADDRINUSE;  /* Translates to UV_EADDRINUSE. */
+      err = UV_EADDRINUSE;
     } else if (err == ERROR_PATH_NOT_FOUND || err == ERROR_INVALID_NAME) {
-      err = WSAEACCES;  /* Translates to UV_EACCES. */
+      err = UV_EACCES;
+    } else {
+      err = uv_translate_sys_error(err);
     }
     goto error;
   }
@@ -781,10 +801,13 @@ int uv_pipe_bind2(uv_pipe_t* handle,
   return 0;
 
 error:
+  uv__free(handle->pipe.serv.accept_reqs);
   uv__free(handle->name);
+  uv__free(name_copy);
+  handle->pipe.serv.accept_reqs = NULL;
   handle->name = NULL;
 
-  return uv_translate_sys_error(err);
+  return err;
 }
 
 
@@ -834,7 +857,19 @@ void uv_pipe_connect(uv_connect_t* req,
                     uv_pipe_t* handle,
                     const char* name,
                     uv_connect_cb cb) {
-  uv_pipe_connect2(req, handle, name, strlen(name), 0, cb);
+  uv_loop_t* loop;
+  int err;
+
+  err = uv_pipe_connect2(req, handle, name, strlen(name), 0, cb);
+
+  if (err) {
+    loop = handle->loop;
+    /* Make this req pending reporting an error. */
+    SET_REQ_ERROR(req, err);
+    uv__insert_pending_req(loop, (uv_req_t*) req);
+    handle->reqs_pending++;
+    REGISTER_HANDLE_REQ(loop, handle, req);
+  }
 }
 
 
@@ -844,11 +879,20 @@ int uv_pipe_connect2(uv_connect_t* req,
                      size_t namelen,
                      unsigned int flags,
                      uv_connect_cb cb) {
-  uv_loop_t* loop = handle->loop;
+  uv_loop_t* loop;
   int err;
   size_t nameSize;
   HANDLE pipeHandle = INVALID_HANDLE_VALUE;
   DWORD duplex_flags;
+  char* name_copy;
+
+  loop = handle->loop;
+  UV_REQ_INIT(req, UV_CONNECT);
+  req->handle = (uv_stream_t*) handle;
+  req->cb = cb;
+  req->u.connect.pipeHandle = INVALID_HANDLE_VALUE;
+  req->u.connect.duplex_flags = 0;
+  req->u.connect.name = NULL;
 
   if (flags & ~UV_PIPE_NO_TRUNCATE) {
     return UV_EINVAL;
@@ -862,22 +906,17 @@ int uv_pipe_connect2(uv_connect_t* req,
     return UV_EINVAL;
   }
 
-  if (*name == '\0') {
+  if (includes_nul(name, namelen)) {
     return UV_EINVAL;
   }
 
-  if (flags & UV_PIPE_NO_TRUNCATE) {
-    if (namelen > 256) {
-      return UV_EINVAL;
-    }
+  name_copy = uv__malloc(namelen + 1);
+  if (name_copy == NULL) {
+    return UV_ENOMEM;
   }
 
-  UV_REQ_INIT(req, UV_CONNECT);
-  req->handle = (uv_stream_t*) handle;
-  req->cb = cb;
-  req->u.connect.pipeHandle = INVALID_HANDLE_VALUE;
-  req->u.connect.duplex_flags = 0;
-  req->u.connect.name = NULL;
+  memcpy(name_copy, name, namelen);
+  name_copy[namelen] = '\0';
 
   if (handle->flags & UV_HANDLE_PIPESERVER) {
     err = ERROR_INVALID_PARAMETER;
@@ -889,7 +928,11 @@ int uv_pipe_connect2(uv_connect_t* req,
   }
   uv__pipe_connection_init(handle);
 
-  err = uv__convert_utf8_to_utf16(name, &handle->name);
+  /* TODO(bnoordhuis) Add converters that take a |length| parameter. */
+  err = uv__convert_utf8_to_utf16(name_copy, &handle->name);
+  uv__free(name_copy);
+  name_copy = NULL;
+
   if (err) {
     err = ERROR_NO_UNICODE_TRANSLATION;
     goto error;
@@ -935,6 +978,8 @@ int uv_pipe_connect2(uv_connect_t* req,
   return 0;
 
 error:
+  uv__free(name_copy);
+
   if (handle->name) {
     uv__free(handle->name);
     handle->name = NULL;
diff --git a/deps/uv/src/win/process.c b/deps/uv/src/win/process.c
index 43059858f3112e..4e94dee90e13ee 100644
--- a/deps/uv/src/win/process.c
+++ b/deps/uv/src/win/process.c
@@ -26,7 +26,7 @@
 #include <signal.h>
 #include <limits.h>
 #include <wchar.h>
-#include <malloc.h>    /* alloca */
+#include <malloc.h>    /* _alloca */
 
 #include "uv.h"
 #include "internal.h"
@@ -304,8 +304,9 @@ static WCHAR* path_search_walk_ext(const WCHAR *dir,
  * - If there's really only a filename, check the current directory for file,
  *   then search all path directories.
  *
- * - If filename specified has *any* extension, search for the file with the
- *   specified extension first.
+ * - If filename specified has *any* extension, or already contains a path
+ *   and the UV_PROCESS_WINDOWS_FILE_PATH_EXACT_NAME flag is specified,
+ *   search for the file with the exact specified filename first.
  *
  * - If the literal filename is not found in a directory, try *appending*
  *   (not replacing) .com first and then .exe.
@@ -331,7 +332,8 @@ static WCHAR* path_search_walk_ext(const WCHAR *dir,
  */
 static WCHAR* search_path(const WCHAR *file,
                             WCHAR *cwd,
-                            const WCHAR *path) {
+                            const WCHAR *path,
+                            unsigned int flags) {
   int file_has_dir;
   WCHAR* result = NULL;
   WCHAR *file_name_start;
@@ -372,16 +374,18 @@ static WCHAR* search_path(const WCHAR *file,
         file, file_name_start - file,
         file_name_start, file_len - (file_name_start - file),
         cwd, cwd_len,
-        name_has_ext);
+        name_has_ext || (flags & UV_PROCESS_WINDOWS_FILE_PATH_EXACT_NAME));
 
   } else {
     dir_end = path;
 
-    /* The file is really only a name; look in cwd first, then scan path */
-    result = path_search_walk_ext(L"", 0,
-                                  file, file_len,
-                                  cwd, cwd_len,
-                                  name_has_ext);
+    if (NeedCurrentDirectoryForExePathW(L"")) {
+      /* The file is really only a name; look in cwd first, then scan path */
+      result = path_search_walk_ext(L"", 0,
+                                    file, file_len,
+                                    cwd, cwd_len,
+                                    name_has_ext);
+    }
 
     while (result == NULL) {
       if (dir_end == NULL || *dir_end == L'\0') {
@@ -509,7 +513,7 @@ WCHAR* quote_cmd_arg(const WCHAR *source, WCHAR *target) {
     }
   }
   target[0] = L'\0';
-  wcsrev(start);
+  _wcsrev(start);
   *(target++) = L'"';
   return target;
 }
@@ -613,8 +617,8 @@ int env_strncmp(const wchar_t* a, int na, const wchar_t* b) {
   assert(b_eq);
   nb = b_eq - b;
 
-  A = alloca((na+1) * sizeof(wchar_t));
-  B = alloca((nb+1) * sizeof(wchar_t));
+  A = _alloca((na+1) * sizeof(wchar_t));
+  B = _alloca((nb+1) * sizeof(wchar_t));
 
   r = LCMapStringW(LOCALE_INVARIANT, LCMAP_UPPERCASE, a, na, A, na);
   assert(r==na);
@@ -691,7 +695,7 @@ int make_program_env(char* env_block[], WCHAR** dst_ptr) {
   if (dst_copy == NULL && env_len > 0) {
     return UV_ENOMEM;
   }
-  env_copy = alloca(env_block_count * sizeof(WCHAR*));
+  env_copy = _alloca(env_block_count * sizeof(WCHAR*));
 
   ptr = dst_copy;
   ptr_copy = env_copy;
@@ -933,6 +937,7 @@ int uv_spawn(uv_loop_t* loop,
   assert(!(options->flags & ~(UV_PROCESS_DETACHED |
                               UV_PROCESS_SETGID |
                               UV_PROCESS_SETUID |
+                              UV_PROCESS_WINDOWS_FILE_PATH_EXACT_NAME |
                               UV_PROCESS_WINDOWS_HIDE |
                               UV_PROCESS_WINDOWS_HIDE_CONSOLE |
                               UV_PROCESS_WINDOWS_HIDE_GUI |
@@ -1012,7 +1017,8 @@ int uv_spawn(uv_loop_t* loop,
 
   application_path = search_path(application,
                                  cwd,
-                                 path);
+                                 path,
+                                 options->flags);
   if (application_path == NULL) {
     /* Not found. */
     err = ERROR_FILE_NOT_FOUND;
@@ -1210,9 +1216,18 @@ static int uv__kill(HANDLE process_handle, int signum) {
                          (PVOID) dump_folder,
                          &dump_folder_len);
       if (ret != ERROR_SUCCESS) {
+        /* Workaround for missing uuid.dll on MinGW. */
+        static const GUID FOLDERID_LocalAppData_libuv = {
+          0xf1b32785, 0x6fba, 0x4fcf,
+              {0x9d, 0x55, 0x7b, 0x8e, 0x7f, 0x15, 0x70, 0x91}
+        };
+
         /* Default value for `dump_folder` is `%LOCALAPPDATA%\CrashDumps`. */
         WCHAR* localappdata;
-        SHGetKnownFolderPath(&FOLDERID_LocalAppData, 0, NULL, &localappdata);
+        SHGetKnownFolderPath(&FOLDERID_LocalAppData_libuv,
+                             0,
+                             NULL,
+                             &localappdata);
         _snwprintf_s(dump_folder,
                      sizeof(dump_folder),
                      _TRUNCATE,
@@ -1292,7 +1307,6 @@ static int uv__kill(HANDLE process_handle, int signum) {
     case SIGINT: {
       /* Unconditionally terminate the process. On Windows, killed processes
        * normally return 1. */
-      DWORD status;
       int err;
 
       if (TerminateProcess(process_handle, 1))
@@ -1302,8 +1316,7 @@ static int uv__kill(HANDLE process_handle, int signum) {
        * TerminateProcess will fail with ERROR_ACCESS_DENIED. */
       err = GetLastError();
       if (err == ERROR_ACCESS_DENIED &&
-          GetExitCodeProcess(process_handle, &status) &&
-          status != STILL_ACTIVE) {
+          WaitForSingleObject(process_handle, 0) == WAIT_OBJECT_0) {
         return UV_ESRCH;
       }
 
@@ -1312,15 +1325,16 @@ static int uv__kill(HANDLE process_handle, int signum) {
 
     case 0: {
       /* Health check: is the process still alive? */
-      DWORD status;
-
-      if (!GetExitCodeProcess(process_handle, &status))
-        return uv_translate_sys_error(GetLastError());
-
-      if (status != STILL_ACTIVE)
-        return UV_ESRCH;
-
-      return 0;
+      switch (WaitForSingleObject(process_handle, 0)) {
+        case WAIT_OBJECT_0:
+          return UV_ESRCH;
+        case WAIT_FAILED:
+          return uv_translate_sys_error(GetLastError());
+        case WAIT_TIMEOUT:
+          return 0;
+        default:
+          return UV_UNKNOWN;
+      }
     }
 
     default:
@@ -1355,7 +1369,7 @@ int uv_kill(int pid, int signum) {
   if (pid == 0) {
     process_handle = GetCurrentProcess();
   } else {
-    process_handle = OpenProcess(PROCESS_TERMINATE | PROCESS_QUERY_INFORMATION,
+    process_handle = OpenProcess(PROCESS_TERMINATE | PROCESS_QUERY_INFORMATION | SYNCHRONIZE,
                                  FALSE,
                                  pid);
   }
diff --git a/deps/uv/src/win/tty.c b/deps/uv/src/win/tty.c
index ac836930d6f3a1..9f8dd698d76124 100644
--- a/deps/uv/src/win/tty.c
+++ b/deps/uv/src/win/tty.c
@@ -695,7 +695,7 @@ void uv_process_tty_read_raw_req(uv_loop_t* loop, uv_tty_t* handle,
 
   DWORD records_left, records_read;
   uv_buf_t buf;
-  off_t buf_used;
+  _off_t buf_used;
 
   assert(handle->type == UV_TTY);
   assert(handle->flags & UV_HANDLE_TTY_READABLE);
@@ -2246,7 +2246,7 @@ void uv__tty_close(uv_tty_t* handle) {
   if (handle->u.fd == -1)
     CloseHandle(handle->handle);
   else
-    close(handle->u.fd);
+    _close(handle->u.fd);
 
   handle->u.fd = -1;
   handle->handle = INVALID_HANDLE_VALUE;
diff --git a/deps/uv/src/win/util.c b/deps/uv/src/win/util.c
index 91d88a54fb24a6..a96cb915930a30 100644
--- a/deps/uv/src/win/util.c
+++ b/deps/uv/src/win/util.c
@@ -1466,6 +1466,48 @@ int uv_os_setpriority(uv_pid_t pid, int priority) {
   return r;
 }
 
+int uv_thread_getpriority(uv_thread_t tid, int* priority) {
+  int r;
+
+  if (priority == NULL)
+    return UV_EINVAL;
+
+  r = GetThreadPriority(tid);
+  if (r == THREAD_PRIORITY_ERROR_RETURN)
+    return uv_translate_sys_error(GetLastError());
+
+  *priority = r;
+  return 0;
+}
+
+int uv_thread_setpriority(uv_thread_t tid, int priority) {
+  int r;
+
+  switch (priority) {
+    case UV_THREAD_PRIORITY_HIGHEST:
+      r = SetThreadPriority(tid, THREAD_PRIORITY_HIGHEST);
+      break;
+    case UV_THREAD_PRIORITY_ABOVE_NORMAL:
+      r = SetThreadPriority(tid, THREAD_PRIORITY_ABOVE_NORMAL);
+      break;
+    case UV_THREAD_PRIORITY_NORMAL:
+      r = SetThreadPriority(tid, THREAD_PRIORITY_NORMAL);
+      break;
+    case UV_THREAD_PRIORITY_BELOW_NORMAL:
+      r = SetThreadPriority(tid, THREAD_PRIORITY_BELOW_NORMAL);
+      break;
+    case UV_THREAD_PRIORITY_LOWEST:
+      r = SetThreadPriority(tid, THREAD_PRIORITY_LOWEST);
+      break;
+    default:
+      return 0;
+  }
+
+  if (r == 0)
+    return uv_translate_sys_error(GetLastError());
+
+  return 0;
+}
 
 int uv_os_uname(uv_utsname_t* buffer) {
   /* Implementation loosely based on
diff --git a/deps/uv/test/run-tests.c b/deps/uv/test/run-tests.c
index 97fec52f1d8b06..17fb0e0cf73d25 100644
--- a/deps/uv/test/run-tests.c
+++ b/deps/uv/test/run-tests.c
@@ -25,6 +25,7 @@
 
 #ifdef _WIN32
 # include <io.h>
+# define read _read
 #else
 # include <unistd.h>
 #endif
diff --git a/deps/uv/test/runner-win.c b/deps/uv/test/runner-win.c
index 61d6f1431be9e3..6c6e35f7731327 100644
--- a/deps/uv/test/runner-win.c
+++ b/deps/uv/test/runner-win.c
@@ -310,7 +310,7 @@ static int clear_line(void) {
   COORD coord;
   DWORD written;
 
-  handle = (HANDLE)_get_osfhandle(fileno(stderr));
+  handle = (HANDLE)_get_osfhandle(_fileno(stderr));
   if (handle == INVALID_HANDLE_VALUE)
     return -1;
 
diff --git a/deps/uv/test/test-fs-copyfile.c b/deps/uv/test/test-fs-copyfile.c
index 3f159aeb68fa89..3aacf12596f558 100644
--- a/deps/uv/test/test-fs-copyfile.c
+++ b/deps/uv/test/test-fs-copyfile.c
@@ -74,7 +74,8 @@ static void touch_file(const char* name, unsigned int size) {
   int r;
   unsigned int i;
 
-  r = uv_fs_open(NULL, &req, name, O_WRONLY | O_CREAT | O_TRUNC,
+  r = uv_fs_open(NULL, &req, name,
+                 UV_FS_O_WRONLY | UV_FS_O_CREAT | UV_FS_O_TRUNC,
                  S_IWUSR | S_IRUSR, NULL);
   uv_fs_req_cleanup(&req);
   ASSERT_GE(r, 0);
diff --git a/deps/uv/test/test-fs-event.c b/deps/uv/test/test-fs-event.c
index 7b5c0d8eb3d967..0ef51180dbd94d 100644
--- a/deps/uv/test/test-fs-event.c
+++ b/deps/uv/test/test-fs-event.c
@@ -80,7 +80,9 @@ static void create_file(const char* name) {
   uv_file file;
   uv_fs_t req;
 
-  r = uv_fs_open(NULL, &req, name, O_WRONLY | O_CREAT, S_IWUSR | S_IRUSR, NULL);
+  r = uv_fs_open(NULL, &req, name, UV_FS_O_WRONLY | UV_FS_O_CREAT,
+                 S_IWUSR | S_IRUSR,
+                 NULL);
   ASSERT_GE(r, 0);
   file = r;
   uv_fs_req_cleanup(&req);
@@ -95,7 +97,7 @@ static void touch_file(const char* name) {
   uv_fs_t req;
   uv_buf_t buf;
 
-  r = uv_fs_open(NULL, &req, name, O_RDWR, 0, NULL);
+  r = uv_fs_open(NULL, &req, name, UV_FS_O_RDWR, 0, NULL);
   ASSERT_GE(r, 0);
   file = r;
   uv_fs_req_cleanup(&req);
diff --git a/deps/uv/test/test-fs-readdir.c b/deps/uv/test/test-fs-readdir.c
index b6b5b7ff2c1d71..0f2b4afa58c589 100644
--- a/deps/uv/test/test-fs-readdir.c
+++ b/deps/uv/test/test-fs-readdir.c
@@ -359,7 +359,7 @@ TEST_IMPL(fs_readdir_non_empty_dir) {
   r = uv_fs_open(uv_default_loop(),
                  &create_req,
                  "test_dir/file1",
-                 O_WRONLY | O_CREAT, S_IWUSR | S_IRUSR,
+                 UV_FS_O_WRONLY | UV_FS_O_CREAT, S_IWUSR | S_IRUSR,
                  NULL);
   ASSERT_GE(r, 0);
   uv_fs_req_cleanup(&create_req);
@@ -373,7 +373,7 @@ TEST_IMPL(fs_readdir_non_empty_dir) {
   r = uv_fs_open(uv_default_loop(),
                  &create_req,
                  "test_dir/file2",
-                 O_WRONLY | O_CREAT, S_IWUSR | S_IRUSR,
+                 UV_FS_O_WRONLY | UV_FS_O_CREAT, S_IWUSR | S_IRUSR,
                  NULL);
   ASSERT_GE(r, 0);
   uv_fs_req_cleanup(&create_req);
diff --git a/deps/uv/test/test-fs.c b/deps/uv/test/test-fs.c
index 1acdc5c67082c7..fe78117bbeddc0 100644
--- a/deps/uv/test/test-fs.c
+++ b/deps/uv/test/test-fs.c
@@ -51,6 +51,9 @@
 # ifndef lseek
 #   define lseek _lseek
 # endif
+# define S_IFDIR _S_IFDIR
+# define S_IFCHR _S_IFCHR
+# define S_IFREG _S_IFREG
 #endif
 
 #define TOO_LONG_NAME_LENGTH 65536
@@ -227,7 +230,7 @@ static void realpath_cb(uv_fs_t* req) {
   uv_cwd(test_file_abs_buf, &test_file_abs_size);
 #ifdef _WIN32
   strcat(test_file_abs_buf, "\\test_file");
-  ASSERT_OK(stricmp(req->ptr, test_file_abs_buf));
+  ASSERT_OK(_stricmp(req->ptr, test_file_abs_buf));
 #else
   strcat(test_file_abs_buf, "/test_file");
   ASSERT_OK(strcmp(req->ptr, test_file_abs_buf));
@@ -343,7 +346,7 @@ static void statfs_cb(uv_fs_t* req) {
   defined(__OpenBSD__) || defined(__NetBSD__)
   ASSERT_OK(stats->f_type);
 #else
-  ASSERT_GT(stats->f_type, 0);
+  ASSERT_UINT64_GT(stats->f_type, 0);
 #endif
 
   ASSERT_GT(stats->f_bsize, 0);
@@ -718,12 +721,13 @@ TEST_IMPL(fs_file_noent) {
 
   loop = uv_default_loop();
 
-  r = uv_fs_open(NULL, &req, "does_not_exist", O_RDONLY, 0, NULL);
+  r = uv_fs_open(NULL, &req, "does_not_exist", UV_FS_O_RDONLY, 0, NULL);
   ASSERT_EQ(r, UV_ENOENT);
   ASSERT_EQ(req.result, UV_ENOENT);
   uv_fs_req_cleanup(&req);
 
-  r = uv_fs_open(loop, &req, "does_not_exist", O_RDONLY, 0, open_noent_cb);
+  r = uv_fs_open(loop, &req, "does_not_exist", UV_FS_O_RDONLY, 0,
+                 open_noent_cb);
   ASSERT_OK(r);
 
   ASSERT_OK(open_cb_count);
@@ -746,12 +750,12 @@ TEST_IMPL(fs_file_nametoolong) {
   memset(name, 'a', TOO_LONG_NAME_LENGTH);
   name[TOO_LONG_NAME_LENGTH] = 0;
 
-  r = uv_fs_open(NULL, &req, name, O_RDONLY, 0, NULL);
+  r = uv_fs_open(NULL, &req, name, UV_FS_O_RDONLY, 0, NULL);
   ASSERT_EQ(r, UV_ENAMETOOLONG);
   ASSERT_EQ(req.result, UV_ENAMETOOLONG);
   uv_fs_req_cleanup(&req);
 
-  r = uv_fs_open(loop, &req, name, O_RDONLY, 0, open_nametoolong_cb);
+  r = uv_fs_open(loop, &req, name, UV_FS_O_RDONLY, 0, open_nametoolong_cb);
   ASSERT_OK(r);
 
   ASSERT_OK(open_cb_count);
@@ -786,12 +790,12 @@ TEST_IMPL(fs_file_loop) {
   ASSERT_OK(r);
   uv_fs_req_cleanup(&req);
 
-  r = uv_fs_open(NULL, &req, "test_symlink", O_RDONLY, 0, NULL);
+  r = uv_fs_open(NULL, &req, "test_symlink", UV_FS_O_RDONLY, 0, NULL);
   ASSERT_EQ(r, UV_ELOOP);
   ASSERT_EQ(req.result, UV_ELOOP);
   uv_fs_req_cleanup(&req);
 
-  r = uv_fs_open(loop, &req, "test_symlink", O_RDONLY, 0, open_loop_cb);
+  r = uv_fs_open(loop, &req, "test_symlink", UV_FS_O_RDONLY, 0, open_loop_cb);
   ASSERT_OK(r);
 
   ASSERT_OK(open_cb_count);
@@ -918,7 +922,7 @@ TEST_IMPL(fs_file_async) {
 
   loop = uv_default_loop();
 
-  r = uv_fs_open(loop, &open_req1, "test_file", O_WRONLY | O_CREAT,
+  r = uv_fs_open(loop, &open_req1, "test_file", UV_FS_O_WRONLY | UV_FS_O_CREAT,
       S_IRUSR | S_IWUSR, create_cb);
   ASSERT_OK(r);
   uv_run(loop, UV_RUN_DEFAULT);
@@ -938,7 +942,7 @@ TEST_IMPL(fs_file_async) {
   ASSERT_EQ(1, close_cb_count);
   ASSERT_EQ(1, rename_cb_count);
 
-  r = uv_fs_open(loop, &open_req1, "test_file2", O_RDWR, 0, open_cb);
+  r = uv_fs_open(loop, &open_req1, "test_file2", UV_FS_O_RDWR, 0, open_cb);
   ASSERT_OK(r);
 
   uv_run(loop, UV_RUN_DEFAULT);
@@ -950,7 +954,7 @@ TEST_IMPL(fs_file_async) {
   ASSERT_EQ(1, write_cb_count);
   ASSERT_EQ(1, ftruncate_cb_count);
 
-  r = uv_fs_open(loop, &open_req1, "test_file2", O_RDONLY, 0, open_cb);
+  r = uv_fs_open(loop, &open_req1, "test_file2", UV_FS_O_RDONLY, 0, open_cb);
   ASSERT_OK(r);
 
   uv_run(loop, UV_RUN_DEFAULT);
@@ -982,7 +986,8 @@ static void fs_file_sync(int add_flags) {
   loop = uv_default_loop();
 
   r = uv_fs_open(loop, &open_req1, "test_file",
-      O_WRONLY | O_CREAT | add_flags, S_IWUSR | S_IRUSR, NULL);
+                 UV_FS_O_WRONLY | UV_FS_O_CREAT | add_flags, S_IWUSR | S_IRUSR,
+                 NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(open_req1.result, 0);
   uv_fs_req_cleanup(&open_req1);
@@ -998,7 +1003,8 @@ static void fs_file_sync(int add_flags) {
   ASSERT_OK(close_req.result);
   uv_fs_req_cleanup(&close_req);
 
-  r = uv_fs_open(NULL, &open_req1, "test_file", O_RDWR | add_flags, 0, NULL);
+  r = uv_fs_open(NULL, &open_req1, "test_file", UV_FS_O_RDWR | add_flags, 0,
+                 NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(open_req1.result, 0);
   uv_fs_req_cleanup(&open_req1);
@@ -1025,7 +1031,7 @@ static void fs_file_sync(int add_flags) {
   ASSERT_OK(rename_req.result);
   uv_fs_req_cleanup(&rename_req);
 
-  r = uv_fs_open(NULL, &open_req1, "test_file2", O_RDONLY | add_flags, 0,
+  r = uv_fs_open(NULL, &open_req1, "test_file2", UV_FS_O_RDONLY | add_flags, 0,
       NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(open_req1.result, 0);
@@ -1071,7 +1077,8 @@ static void fs_file_write_null_buffer(int add_flags) {
   loop = uv_default_loop();
 
   r = uv_fs_open(NULL, &open_req1, "test_file",
-      O_WRONLY | O_CREAT | add_flags, S_IWUSR | S_IRUSR, NULL);
+                 UV_FS_O_WRONLY | UV_FS_O_CREAT | add_flags, S_IWUSR | S_IRUSR,
+                 NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(open_req1.result, 0);
   uv_fs_req_cleanup(&open_req1);
@@ -1116,7 +1123,8 @@ TEST_IMPL(fs_async_dir) {
   ASSERT_EQ(1, mkdir_cb_count);
 
   /* Create 2 files synchronously. */
-  r = uv_fs_open(NULL, &open_req1, "test_dir/file1", O_WRONLY | O_CREAT,
+  r = uv_fs_open(NULL, &open_req1, "test_dir/file1",
+                 UV_FS_O_WRONLY | UV_FS_O_CREAT,
       S_IWUSR | S_IRUSR, NULL);
   ASSERT_GE(r, 0);
   uv_fs_req_cleanup(&open_req1);
@@ -1124,7 +1132,8 @@ TEST_IMPL(fs_async_dir) {
   ASSERT_OK(r);
   uv_fs_req_cleanup(&close_req);
 
-  r = uv_fs_open(NULL, &open_req1, "test_dir/file2", O_WRONLY | O_CREAT,
+  r = uv_fs_open(NULL, &open_req1, "test_dir/file2",
+                 UV_FS_O_WRONLY | UV_FS_O_CREAT,
       S_IWUSR | S_IRUSR, NULL);
   ASSERT_GE(r, 0);
   uv_fs_req_cleanup(&open_req1);
@@ -1193,7 +1202,7 @@ TEST_IMPL(fs_async_dir) {
 }
 
 
-static int test_sendfile(void (*setup)(int), uv_fs_cb cb, off_t expected_size) {
+static int test_sendfile(void (*setup)(int), uv_fs_cb cb, size_t expected_size) {
   int f, r;
   struct stat s1, s2;
   uv_fs_t req;
@@ -1205,7 +1214,7 @@ static int test_sendfile(void (*setup)(int), uv_fs_cb cb, off_t expected_size) {
   unlink("test_file");
   unlink("test_file2");
 
-  f = open("test_file", O_WRONLY | O_CREAT, S_IWUSR | S_IRUSR);
+  f = open("test_file", UV_FS_O_WRONLY | UV_FS_O_CREAT, S_IWUSR | S_IRUSR);
   ASSERT_NE(f, -1);
 
   if (setup != NULL)
@@ -1215,12 +1224,12 @@ static int test_sendfile(void (*setup)(int), uv_fs_cb cb, off_t expected_size) {
   ASSERT_OK(r);
 
   /* Test starts here. */
-  r = uv_fs_open(NULL, &open_req1, "test_file", O_RDWR, 0, NULL);
+  r = uv_fs_open(NULL, &open_req1, "test_file", UV_FS_O_RDWR, 0, NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(open_req1.result, 0);
   uv_fs_req_cleanup(&open_req1);
 
-  r = uv_fs_open(NULL, &open_req2, "test_file2", O_WRONLY | O_CREAT,
+  r = uv_fs_open(NULL, &open_req2, "test_file2", UV_FS_O_WRONLY | UV_FS_O_CREAT,
       S_IWUSR | S_IRUSR, NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(open_req2.result, 0);
@@ -1248,7 +1257,7 @@ static int test_sendfile(void (*setup)(int), uv_fs_cb cb, off_t expected_size) {
 
   if (expected_size > 0) {
     ASSERT_UINT64_EQ(s1.st_size, s2.st_size + 1);
-    r = uv_fs_open(NULL, &open_req1, "test_file2", O_RDWR, 0, NULL);
+    r = uv_fs_open(NULL, &open_req1, "test_file2", UV_FS_O_RDWR, 0, NULL);
     ASSERT_GE(r, 0);
     ASSERT_GE(open_req1.result, 0);
     uv_fs_req_cleanup(&open_req1);
@@ -1364,7 +1373,7 @@ TEST_IMPL(fs_mkstemp) {
   uv_fs_close(NULL, &req, mkstemp_req2.result, NULL);
   uv_fs_req_cleanup(&req);
 
-  fd = uv_fs_open(NULL, &req, mkstemp_req1.path , O_RDONLY, 0, NULL);
+  fd = uv_fs_open(NULL, &req, mkstemp_req1.path, UV_FS_O_RDONLY, 0, NULL);
   ASSERT_GE(fd, 0);
   uv_fs_req_cleanup(&req);
 
@@ -1410,7 +1419,7 @@ TEST_IMPL(fs_fstat) {
 
   loop = uv_default_loop();
 
-  r = uv_fs_open(NULL, &req, "test_file", O_RDWR | O_CREAT,
+  r = uv_fs_open(NULL, &req, "test_file", UV_FS_O_RDWR | UV_FS_O_CREAT,
       S_IWUSR | S_IRUSR, NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(req.result, 0);
@@ -1617,7 +1626,7 @@ TEST_IMPL(fs_access) {
   access_cb_count = 0; /* reset for the next test */
 
   /* Create file */
-  r = uv_fs_open(NULL, &req, "test_file", O_RDWR | O_CREAT,
+  r = uv_fs_open(NULL, &req, "test_file", UV_FS_O_RDWR | UV_FS_O_CREAT,
                  S_IWUSR | S_IRUSR, NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(req.result, 0);
@@ -1678,7 +1687,7 @@ TEST_IMPL(fs_chmod) {
 
   loop = uv_default_loop();
 
-  r = uv_fs_open(NULL, &req, "test_file", O_RDWR | O_CREAT,
+  r = uv_fs_open(NULL, &req, "test_file", UV_FS_O_RDWR | UV_FS_O_CREAT,
       S_IWUSR | S_IRUSR, NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(req.result, 0);
@@ -1777,9 +1786,7 @@ TEST_IMPL(fs_unlink_readonly) {
   loop = uv_default_loop();
 
   r = uv_fs_open(NULL,
-                 &req,
-                 "test_file",
-                 O_RDWR | O_CREAT,
+                 &req, "test_file", UV_FS_O_RDWR | UV_FS_O_CREAT,
                  S_IWUSR | S_IRUSR,
                  NULL);
   ASSERT_GE(r, 0);
@@ -1836,9 +1843,7 @@ TEST_IMPL(fs_unlink_archive_readonly) {
   loop = uv_default_loop();
 
   r = uv_fs_open(NULL,
-                 &req,
-                 "test_file",
-                 O_RDWR | O_CREAT,
+                 &req, "test_file", UV_FS_O_RDWR | UV_FS_O_CREAT,
                  S_IWUSR | S_IRUSR,
                  NULL);
   ASSERT_GE(r, 0);
@@ -1894,7 +1899,7 @@ TEST_IMPL(fs_chown) {
 
   loop = uv_default_loop();
 
-  r = uv_fs_open(NULL, &req, "test_file", O_RDWR | O_CREAT,
+  r = uv_fs_open(NULL, &req, "test_file", UV_FS_O_RDWR | UV_FS_O_CREAT,
       S_IWUSR | S_IRUSR, NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(req.result, 0);
@@ -1989,7 +1994,7 @@ TEST_IMPL(fs_link) {
 
   loop = uv_default_loop();
 
-  r = uv_fs_open(NULL, &req, "test_file", O_RDWR | O_CREAT,
+  r = uv_fs_open(NULL, &req, "test_file", UV_FS_O_RDWR | UV_FS_O_CREAT,
       S_IWUSR | S_IRUSR, NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(req.result, 0);
@@ -2010,7 +2015,7 @@ TEST_IMPL(fs_link) {
   ASSERT_OK(req.result);
   uv_fs_req_cleanup(&req);
 
-  r = uv_fs_open(NULL, &req, "test_file_link", O_RDWR, 0, NULL);
+  r = uv_fs_open(NULL, &req, "test_file_link", UV_FS_O_RDWR, 0, NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(req.result, 0);
   link = req.result;
@@ -2031,7 +2036,7 @@ TEST_IMPL(fs_link) {
   uv_run(loop, UV_RUN_DEFAULT);
   ASSERT_EQ(1, link_cb_count);
 
-  r = uv_fs_open(NULL, &req, "test_file_link2", O_RDWR, 0, NULL);
+  r = uv_fs_open(NULL, &req, "test_file_link2", UV_FS_O_RDWR, 0, NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(req.result, 0);
   link = req.result;
@@ -2090,7 +2095,7 @@ TEST_IMPL(fs_readlink) {
     /* Setup */
 
     /* Create a non-symlink file */
-    r = uv_fs_open(NULL, &req, "test_file", O_RDWR | O_CREAT,
+    r = uv_fs_open(NULL, &req, "test_file", UV_FS_O_RDWR | UV_FS_O_CREAT,
                    S_IWUSR | S_IRUSR, NULL);
     ASSERT_GE(r, 0);
     ASSERT_GE(req.result, 0);
@@ -2162,7 +2167,7 @@ TEST_IMPL(fs_symlink) {
 
   loop = uv_default_loop();
 
-  r = uv_fs_open(NULL, &req, "test_file", O_RDWR | O_CREAT,
+  r = uv_fs_open(NULL, &req, "test_file", UV_FS_O_RDWR | UV_FS_O_CREAT,
       S_IWUSR | S_IRUSR, NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(req.result, 0);
@@ -2200,7 +2205,7 @@ TEST_IMPL(fs_symlink) {
   ASSERT_OK(req.result);
   uv_fs_req_cleanup(&req);
 
-  r = uv_fs_open(NULL, &req, "test_file_symlink", O_RDWR, 0, NULL);
+  r = uv_fs_open(NULL, &req, "test_file_symlink", UV_FS_O_RDWR, 0, NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(req.result, 0);
   link = req.result;
@@ -2236,7 +2241,7 @@ TEST_IMPL(fs_symlink) {
   r = uv_fs_realpath(NULL, &req, "test_file_symlink_symlink", NULL);
   ASSERT_OK(r);
 #ifdef _WIN32
-  ASSERT_OK(stricmp(req.ptr, test_file_abs_buf));
+  ASSERT_OK(_stricmp(req.ptr, test_file_abs_buf));
 #else
   ASSERT_OK(strcmp(req.ptr, test_file_abs_buf));
 #endif
@@ -2253,7 +2258,7 @@ TEST_IMPL(fs_symlink) {
   uv_run(loop, UV_RUN_DEFAULT);
   ASSERT_EQ(1, symlink_cb_count);
 
-  r = uv_fs_open(NULL, &req, "test_file_symlink2", O_RDWR, 0, NULL);
+  r = uv_fs_open(NULL, &req, "test_file_symlink2", UV_FS_O_RDWR, 0, NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(req.result, 0);
   link = req.result;
@@ -2386,13 +2391,14 @@ int test_symlink_dir_impl(int type) {
   ASSERT_OK(r);
 #ifdef _WIN32
   ASSERT_EQ(strlen(req.ptr), test_dir_abs_size - 5);
-  ASSERT_OK(strnicmp(req.ptr, test_dir + 4, test_dir_abs_size - 5));
+  ASSERT_OK(_strnicmp(req.ptr, test_dir + 4, test_dir_abs_size - 5));
 #else
   ASSERT_OK(strcmp(req.ptr, test_dir_abs_buf));
 #endif
   uv_fs_req_cleanup(&req);
 
-  r = uv_fs_open(NULL, &open_req1, "test_dir/file1", O_WRONLY | O_CREAT,
+  r = uv_fs_open(NULL, &open_req1, "test_dir/file1",
+                 UV_FS_O_WRONLY | UV_FS_O_CREAT,
       S_IWUSR | S_IRUSR, NULL);
   ASSERT_GE(r, 0);
   uv_fs_req_cleanup(&open_req1);
@@ -2400,7 +2406,8 @@ int test_symlink_dir_impl(int type) {
   ASSERT_OK(r);
   uv_fs_req_cleanup(&close_req);
 
-  r = uv_fs_open(NULL, &open_req1, "test_dir/file2", O_WRONLY | O_CREAT,
+  r = uv_fs_open(NULL, &open_req1, "test_dir/file2",
+                 UV_FS_O_WRONLY | UV_FS_O_CREAT,
       S_IWUSR | S_IRUSR, NULL);
   ASSERT_GE(r, 0);
   uv_fs_req_cleanup(&open_req1);
@@ -2622,7 +2629,9 @@ TEST_IMPL(fs_utime) {
   /* Setup. */
   loop = uv_default_loop();
   unlink(path);
-  r = uv_fs_open(NULL, &req, path, O_RDWR | O_CREAT, S_IWUSR | S_IRUSR, NULL);
+  r = uv_fs_open(NULL, &req, path, UV_FS_O_RDWR | UV_FS_O_CREAT,
+                 S_IWUSR | S_IRUSR,
+                 NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(req.result, 0);
   uv_fs_req_cleanup(&req);
@@ -2666,7 +2675,9 @@ TEST_IMPL(fs_utime_round) {
 
   loop = uv_default_loop();
   unlink(path);
-  r = uv_fs_open(NULL, &req, path, O_RDWR | O_CREAT, S_IWUSR | S_IRUSR, NULL);
+  r = uv_fs_open(NULL, &req, path, UV_FS_O_RDWR | UV_FS_O_CREAT,
+                 S_IWUSR | S_IRUSR,
+                 NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(req.result, 0);
   uv_fs_req_cleanup(&req);
@@ -2743,7 +2754,9 @@ TEST_IMPL(fs_futime) {
   /* Setup. */
   loop = uv_default_loop();
   unlink(path);
-  r = uv_fs_open(NULL, &req, path, O_RDWR | O_CREAT, S_IWUSR | S_IRUSR, NULL);
+  r = uv_fs_open(NULL, &req, path, UV_FS_O_RDWR | UV_FS_O_CREAT,
+                 S_IWUSR | S_IRUSR,
+                 NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(req.result, 0);
   uv_fs_req_cleanup(&req);
@@ -2751,7 +2764,7 @@ TEST_IMPL(fs_futime) {
 
   atime = mtime = 400497753.25; /* 1982-09-10 11:22:33.25 */
 
-  r = uv_fs_open(NULL, &req, path, O_RDWR, 0, NULL);
+  r = uv_fs_open(NULL, &req, path, UV_FS_O_RDWR, 0, NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(req.result, 0);
   file = req.result; /* FIXME probably not how it's supposed to be used */
@@ -2803,7 +2816,9 @@ TEST_IMPL(fs_lutime) {
   /* Setup */
   loop = uv_default_loop();
   unlink(path);
-  r = uv_fs_open(NULL, &req, path, O_RDWR | O_CREAT, S_IWUSR | S_IRUSR, NULL);
+  r = uv_fs_open(NULL, &req, path, UV_FS_O_RDWR | UV_FS_O_CREAT,
+                 S_IWUSR | S_IRUSR,
+                 NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(req.result, 0);
   uv_fs_req_cleanup(&req);
@@ -2999,7 +3014,7 @@ TEST_IMPL(fs_open_dir) {
   path = ".";
   loop = uv_default_loop();
 
-  r = uv_fs_open(NULL, &req, path, O_RDONLY, 0, NULL);
+  r = uv_fs_open(NULL, &req, path, UV_FS_O_RDONLY, 0, NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(req.result, 0);
   ASSERT_NULL(req.ptr);
@@ -3009,7 +3024,7 @@ TEST_IMPL(fs_open_dir) {
   r = uv_fs_close(NULL, &req, file, NULL);
   ASSERT_OK(r);
 
-  r = uv_fs_open(loop, &req, path, O_RDONLY, 0, open_cb_simple);
+  r = uv_fs_open(loop, &req, path, UV_FS_O_RDONLY, 0, open_cb_simple);
   ASSERT_OK(r);
 
   ASSERT_OK(open_cb_count);
@@ -3030,7 +3045,8 @@ static void fs_file_open_append(int add_flags) {
   loop = uv_default_loop();
 
   r = uv_fs_open(NULL, &open_req1, "test_file",
-      O_WRONLY | O_CREAT | add_flags, S_IWUSR | S_IRUSR, NULL);
+                 UV_FS_O_WRONLY | UV_FS_O_CREAT | add_flags, S_IWUSR | S_IRUSR,
+                 NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(open_req1.result, 0);
   uv_fs_req_cleanup(&open_req1);
@@ -3047,7 +3063,7 @@ static void fs_file_open_append(int add_flags) {
   uv_fs_req_cleanup(&close_req);
 
   r = uv_fs_open(NULL, &open_req1, "test_file",
-      O_RDWR | O_APPEND | add_flags, 0, NULL);
+                 UV_FS_O_RDWR | UV_FS_O_APPEND | add_flags, 0, NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(open_req1.result, 0);
   uv_fs_req_cleanup(&open_req1);
@@ -3063,7 +3079,7 @@ static void fs_file_open_append(int add_flags) {
   ASSERT_OK(close_req.result);
   uv_fs_req_cleanup(&close_req);
 
-  r = uv_fs_open(NULL, &open_req1, "test_file", O_RDONLY | add_flags,
+  r = uv_fs_open(NULL, &open_req1, "test_file", UV_FS_O_RDONLY | add_flags,
       S_IRUSR, NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(open_req1.result, 0);
@@ -3105,7 +3121,7 @@ TEST_IMPL(fs_rename_to_existing_file) {
 
   loop = uv_default_loop();
 
-  r = uv_fs_open(NULL, &open_req1, "test_file", O_WRONLY | O_CREAT,
+  r = uv_fs_open(NULL, &open_req1, "test_file", UV_FS_O_WRONLY | UV_FS_O_CREAT,
       S_IWUSR | S_IRUSR, NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(open_req1.result, 0);
@@ -3122,7 +3138,7 @@ TEST_IMPL(fs_rename_to_existing_file) {
   ASSERT_OK(close_req.result);
   uv_fs_req_cleanup(&close_req);
 
-  r = uv_fs_open(NULL, &open_req1, "test_file2", O_WRONLY | O_CREAT,
+  r = uv_fs_open(NULL, &open_req1, "test_file2", UV_FS_O_WRONLY | UV_FS_O_CREAT,
       S_IWUSR | S_IRUSR, NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(open_req1.result, 0);
@@ -3138,7 +3154,7 @@ TEST_IMPL(fs_rename_to_existing_file) {
   ASSERT_OK(rename_req.result);
   uv_fs_req_cleanup(&rename_req);
 
-  r = uv_fs_open(NULL, &open_req1, "test_file2", O_RDONLY, 0, NULL);
+  r = uv_fs_open(NULL, &open_req1, "test_file2", UV_FS_O_RDONLY, 0, NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(open_req1.result, 0);
   uv_fs_req_cleanup(&open_req1);
@@ -3171,7 +3187,7 @@ static void fs_read_bufs(int add_flags) {
 
   ASSERT_LE(0, uv_fs_open(NULL, &open_req1,
                           "test/fixtures/lorem_ipsum.txt",
-                          O_RDONLY | add_flags, 0, NULL));
+                          UV_FS_O_RDONLY | add_flags, 0, NULL));
   ASSERT_GE(open_req1.result, 0);
   uv_fs_req_cleanup(&open_req1);
 
@@ -3235,7 +3251,8 @@ static void fs_read_file_eof(int add_flags) {
   loop = uv_default_loop();
 
   r = uv_fs_open(NULL, &open_req1, "test_file",
-      O_WRONLY | O_CREAT | add_flags, S_IWUSR | S_IRUSR, NULL);
+                 UV_FS_O_WRONLY | UV_FS_O_CREAT | add_flags, S_IWUSR | S_IRUSR,
+                 NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(open_req1.result, 0);
   uv_fs_req_cleanup(&open_req1);
@@ -3251,7 +3268,7 @@ static void fs_read_file_eof(int add_flags) {
   ASSERT_OK(close_req.result);
   uv_fs_req_cleanup(&close_req);
 
-  r = uv_fs_open(NULL, &open_req1, "test_file", O_RDONLY | add_flags, 0,
+  r = uv_fs_open(NULL, &open_req1, "test_file", UV_FS_O_RDONLY | add_flags, 0,
       NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(open_req1.result, 0);
@@ -3299,7 +3316,8 @@ static void fs_write_multiple_bufs(int add_flags) {
   loop = uv_default_loop();
 
   r = uv_fs_open(NULL, &open_req1, "test_file",
-      O_WRONLY | O_CREAT | add_flags, S_IWUSR | S_IRUSR, NULL);
+                 UV_FS_O_WRONLY | UV_FS_O_CREAT | add_flags, S_IWUSR | S_IRUSR,
+                 NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(open_req1.result, 0);
   uv_fs_req_cleanup(&open_req1);
@@ -3316,7 +3334,7 @@ static void fs_write_multiple_bufs(int add_flags) {
   ASSERT_OK(close_req.result);
   uv_fs_req_cleanup(&close_req);
 
-  r = uv_fs_open(NULL, &open_req1, "test_file", O_RDONLY | add_flags, 0,
+  r = uv_fs_open(NULL, &open_req1, "test_file", UV_FS_O_RDONLY | add_flags, 0,
       NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(open_req1.result, 0);
@@ -3405,7 +3423,7 @@ static void fs_write_alotof_bufs(int add_flags) {
   r = uv_fs_open(NULL,
                  &open_req1,
                  "test_file",
-                 O_RDWR | O_CREAT | add_flags,
+                 UV_FS_O_RDWR | UV_FS_O_CREAT | add_flags,
                  S_IWUSR | S_IRUSR,
                  NULL);
   ASSERT_GE(r, 0);
@@ -3439,7 +3457,7 @@ static void fs_write_alotof_bufs(int add_flags) {
   ASSERT_OK(close_req.result);
   uv_fs_req_cleanup(&close_req);
 
-  r = uv_fs_open(NULL, &open_req1, "test_file", O_RDONLY | add_flags, 0,
+  r = uv_fs_open(NULL, &open_req1, "test_file", UV_FS_O_RDONLY | add_flags, 0,
     NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(open_req1.result, 0);
@@ -3518,7 +3536,7 @@ static void fs_write_alotof_bufs_with_offset(int add_flags) {
   r = uv_fs_open(NULL,
                  &open_req1,
                  "test_file",
-                 O_RDWR | O_CREAT | add_flags,
+                 UV_FS_O_RDWR | UV_FS_O_CREAT | add_flags,
                  S_IWUSR | S_IRUSR,
                  NULL);
   ASSERT_GE(r, 0);
@@ -3904,9 +3922,7 @@ TEST_IMPL(get_osfhandle_valid_handle) {
   loop = uv_default_loop();
 
   r = uv_fs_open(NULL,
-                 &open_req1,
-                 "test_file",
-                 O_RDWR | O_CREAT,
+                 &open_req1, "test_file", UV_FS_O_RDWR | UV_FS_O_CREAT,
                  S_IWUSR | S_IRUSR,
                  NULL);
   ASSERT_GE(r, 0);
@@ -3945,7 +3961,7 @@ TEST_IMPL(open_osfhandle_valid_handle) {
   r = uv_fs_open(NULL,
                  &open_req1,
                  "test_file",
-                 O_RDWR | O_CREAT,
+                 UV_FS_O_RDWR | UV_FS_O_CREAT,
                  S_IWUSR | S_IRUSR,
                  NULL);
   ASSERT_GE(r, 0);
@@ -3986,9 +4002,7 @@ TEST_IMPL(fs_file_pos_after_op_with_offset) {
   loop = uv_default_loop();
 
   r = uv_fs_open(loop,
-                 &open_req1,
-                 "test_file",
-                 O_RDWR | O_CREAT,
+                 &open_req1, "test_file", UV_FS_O_RDWR | UV_FS_O_CREAT,
                  S_IWUSR | S_IRUSR,
                  NULL);
   ASSERT_GT(r, 0);
@@ -4060,7 +4074,7 @@ static void fs_file_pos_close_check(const char *contents, int size) {
   uv_fs_req_cleanup(&close_req);
 
   /* Confirm file contents */
-  r = uv_fs_open(NULL, &open_req1, "test_file", O_RDONLY, 0, NULL);
+  r = uv_fs_open(NULL, &open_req1, "test_file", UV_FS_O_RDONLY, 0, NULL);
   ASSERT_GE(r, 0);
   ASSERT_GE(open_req1.result, 0);
   uv_fs_req_cleanup(&open_req1);
@@ -4088,7 +4102,7 @@ static void fs_file_pos_write(int add_flags) {
   r = uv_fs_open(NULL,
                  &open_req1,
                  "test_file",
-                 O_TRUNC | O_CREAT | O_RDWR | add_flags,
+                 UV_FS_O_TRUNC | UV_FS_O_CREAT | UV_FS_O_RDWR | add_flags,
                  S_IWUSR | S_IRUSR,
                  NULL);
   ASSERT_GT(r, 0);
@@ -4126,7 +4140,7 @@ static void fs_file_pos_append(int add_flags) {
   r = uv_fs_open(NULL,
                  &open_req1,
                  "test_file",
-                 O_APPEND | O_CREAT | O_RDWR | add_flags,
+                 UV_FS_O_APPEND | UV_FS_O_CREAT | UV_FS_O_RDWR | add_flags,
                  S_IWUSR | S_IRUSR,
                  NULL);
   ASSERT_GT(r, 0);
@@ -4273,7 +4287,7 @@ TEST_IMPL(fs_exclusive_sharing_mode) {
   r = uv_fs_open(NULL,
                  &open_req1,
                  "test_file",
-                 O_RDWR | O_CREAT | UV_FS_O_EXLOCK,
+                 UV_FS_O_RDWR | UV_FS_O_CREAT | UV_FS_O_EXLOCK,
                  S_IWUSR | S_IRUSR,
                  NULL);
   ASSERT_GE(r, 0);
@@ -4282,8 +4296,7 @@ TEST_IMPL(fs_exclusive_sharing_mode) {
 
   r = uv_fs_open(NULL,
                  &open_req2,
-                 "test_file",
-                 O_RDONLY | UV_FS_O_EXLOCK,
+                 "test_file", UV_FS_O_RDONLY | UV_FS_O_EXLOCK,
                  S_IWUSR | S_IRUSR,
                  NULL);
   ASSERT_LT(r, 0);
@@ -4297,8 +4310,7 @@ TEST_IMPL(fs_exclusive_sharing_mode) {
 
   r = uv_fs_open(NULL,
                  &open_req2,
-                 "test_file",
-                 O_RDONLY | UV_FS_O_EXLOCK,
+                 "test_file", UV_FS_O_RDONLY | UV_FS_O_EXLOCK,
                  S_IWUSR | S_IRUSR,
                  NULL);
   ASSERT_GE(r, 0);
@@ -4405,7 +4417,7 @@ TEST_IMPL(fs_open_readonly_acl) {
     r = uv_fs_open(loop,
                    &open_req1,
                    "test_file_icacls",
-                   O_RDONLY | O_CREAT,
+                   UV_FS_O_RDONLY | UV_FS_O_CREAT,
                    S_IRUSR,
                    NULL);
     ASSERT_GE(r, 0);
@@ -4428,7 +4440,8 @@ TEST_IMPL(fs_open_readonly_acl) {
     }
 
     /* Try opening the file */
-    r = uv_fs_open(NULL, &open_req1, "test_file_icacls", O_RDONLY, 0, NULL);
+    r = uv_fs_open(NULL, &open_req1, "test_file_icacls", UV_FS_O_RDONLY, 0,
+                   NULL);
     if (r < 0) {
         goto acl_cleanup;
     }
@@ -4461,9 +4474,7 @@ TEST_IMPL(fs_fchmod_archive_readonly) {
     /* Setup*/
     unlink("test_file");
     r = uv_fs_open(NULL,
-                   &req,
-                   "test_file",
-                   O_WRONLY | O_CREAT,
+                   &req, "test_file", UV_FS_O_WRONLY | UV_FS_O_CREAT,
                    S_IWUSR | S_IRUSR,
                    NULL);
     ASSERT_GE(r, 0);
@@ -4478,7 +4489,7 @@ TEST_IMPL(fs_fchmod_archive_readonly) {
     ASSERT(r);
     check_permission("test_file", 0400);
     /* Try fchmod */
-    r = uv_fs_open(NULL, &req, "test_file", O_RDONLY, 0, NULL);
+    r = uv_fs_open(NULL, &req, "test_file", UV_FS_O_RDONLY, 0, NULL);
     ASSERT_GE(r, 0);
     ASSERT_GE(req.result, 0);
     file = req.result;
diff --git a/deps/uv/test/test-getters-setters.c b/deps/uv/test/test-getters-setters.c
index e4c6717d3bca64..3b9e89e1fe08a6 100644
--- a/deps/uv/test/test-getters-setters.c
+++ b/deps/uv/test/test-getters-setters.c
@@ -24,6 +24,10 @@
 #include <string.h>
 #include <sys/stat.h>
 
+#ifdef _WIN32
+# define S_IFDIR _S_IFDIR
+#endif
+
 int cookie1;
 int cookie2;
 int cookie3;
diff --git a/deps/uv/test/test-idna.c b/deps/uv/test/test-idna.c
index bcacfc8a3ad785..28f9eaaae9e77a 100644
--- a/deps/uv/test/test-idna.c
+++ b/deps/uv/test/test-idna.c
@@ -100,6 +100,7 @@ TEST_IMPL(utf8_decode1) {
 TEST_IMPL(utf8_decode1_overrun) {
   const char* p;
   char b[1];
+  char c[1];
 
   /* Single byte. */
   p = b;
@@ -113,6 +114,10 @@ TEST_IMPL(utf8_decode1_overrun) {
   ASSERT_EQ((unsigned) -1, uv__utf8_decode1(&p, b + 1));
   ASSERT_PTR_EQ(p, b + 1);
 
+  b[0] = 0x7F;
+  ASSERT_EQ(UV_EINVAL, uv__idna_toascii(b, b + 0, c, c + 1));
+  ASSERT_EQ(UV_EINVAL, uv__idna_toascii(b, b + 1, c, c + 1));
+
   return 0;
 }
 
@@ -146,8 +151,8 @@ TEST_IMPL(idna_toascii) {
   /* Illegal inputs. */
   F("\xC0\x80\xC1\x80", UV_EINVAL);  /* Overlong UTF-8 sequence. */
   F("\xC0\x80\xC1\x80.com", UV_EINVAL);  /* Overlong UTF-8 sequence. */
+  F("", UV_EINVAL);
   /* No conversion. */
-  T("", "");
   T(".", ".");
   T(".com", ".com");
   T("example", "example");
diff --git a/deps/uv/test/test-list.h b/deps/uv/test/test-list.h
index d112d07a29a8ec..d30f02faa8515c 100644
--- a/deps/uv/test/test-list.h
+++ b/deps/uv/test/test-list.h
@@ -227,6 +227,7 @@ TEST_DECLARE   (timer_init)
 TEST_DECLARE   (timer_again)
 TEST_DECLARE   (timer_start_twice)
 TEST_DECLARE   (timer_order)
+TEST_DECLARE   (timer_zero_timeout)
 TEST_DECLARE   (timer_huge_timeout)
 TEST_DECLARE   (timer_huge_repeat)
 TEST_DECLARE   (timer_run_once)
@@ -468,6 +469,7 @@ TEST_DECLARE   (thread_rwlock_trylock)
 TEST_DECLARE   (thread_create)
 TEST_DECLARE   (thread_equal)
 TEST_DECLARE   (thread_affinity)
+TEST_DECLARE   (thread_priority)
 TEST_DECLARE   (dlerror)
 #if (defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))) && \
     !defined(__sun)
@@ -505,6 +507,8 @@ TEST_DECLARE   (listen_no_simultaneous_accepts)
 TEST_DECLARE   (fs_stat_root)
 TEST_DECLARE   (spawn_with_an_odd_path)
 TEST_DECLARE   (spawn_no_path)
+TEST_DECLARE   (spawn_no_ext)
+TEST_DECLARE   (spawn_path_no_ext)
 TEST_DECLARE   (ipc_listen_after_bind_twice)
 TEST_DECLARE   (win32_signum_number)
 #else
@@ -848,6 +852,7 @@ TASK_LIST_START
   TEST_ENTRY  (timer_again)
   TEST_ENTRY  (timer_start_twice)
   TEST_ENTRY  (timer_order)
+  TEST_ENTRY  (timer_zero_timeout)
   TEST_ENTRY  (timer_huge_timeout)
   TEST_ENTRY  (timer_huge_repeat)
   TEST_ENTRY  (timer_run_once)
@@ -1024,6 +1029,8 @@ TASK_LIST_START
   TEST_ENTRY  (fs_stat_root)
   TEST_ENTRY  (spawn_with_an_odd_path)
   TEST_ENTRY  (spawn_no_path)
+  TEST_ENTRY  (spawn_no_ext)
+  TEST_ENTRY  (spawn_path_no_ext)
   TEST_ENTRY  (ipc_listen_after_bind_twice)
   TEST_ENTRY  (win32_signum_number)
 #else
@@ -1165,6 +1172,7 @@ TASK_LIST_START
   TEST_ENTRY  (thread_create)
   TEST_ENTRY  (thread_equal)
   TEST_ENTRY  (thread_affinity)
+  TEST_ENTRY  (thread_priority)
   TEST_ENTRY  (dlerror)
   TEST_ENTRY  (ip4_addr)
   TEST_ENTRY  (ip6_addr_link_local)
diff --git a/deps/uv/test/test-metrics.c b/deps/uv/test/test-metrics.c
index c7c73aa53d79cc..361fcef5ced023 100644
--- a/deps/uv/test/test-metrics.c
+++ b/deps/uv/test/test-metrics.c
@@ -217,7 +217,7 @@ static void prepare_cb(uv_prepare_t* handle) {
   ASSERT_OK(uv_fs_open(uv_default_loop(),
                        &fs_reqs.open_req,
                        "test_file",
-                       O_WRONLY | O_CREAT, S_IRUSR | S_IWUSR,
+                       UV_FS_O_WRONLY | UV_FS_O_CREAT, S_IRUSR | S_IWUSR,
                        create_cb));
 }
 
@@ -329,9 +329,7 @@ TEST_IMPL(metrics_pool_events) {
 
   pool_events_counter = 0;
   fd = uv_fs_open(NULL,
-                  &open_req,
-                  "test_file",
-                  O_WRONLY | O_CREAT,
+                  &open_req, "test_file", UV_FS_O_WRONLY | UV_FS_O_CREAT,
                   S_IRUSR | S_IWUSR,
                   NULL);
   ASSERT_GT(fd, 0);
diff --git a/deps/uv/test/test-pipe-bind-error.c b/deps/uv/test/test-pipe-bind-error.c
index 381a0084dec2cc..412f23aedb0a01 100644
--- a/deps/uv/test/test-pipe-bind-error.c
+++ b/deps/uv/test/test-pipe-bind-error.c
@@ -33,6 +33,7 @@
 
 
 static int close_cb_called = 0;
+static int connect_cb_called = 0;
 
 
 static void close_cb(uv_handle_t* handle) {
@@ -154,13 +155,23 @@ TEST_IMPL(pipe_bind_or_listen_error_after_close) {
   return 0;
 }
 
+
+static void connect_overlong_cb(uv_connect_t* connect_req, int status) {
+  ASSERT_EQ(status, UV_EINVAL);
+  connect_cb_called++;
+  uv_close((uv_handle_t*) connect_req->handle, close_cb);
+}
+
+
 TEST_IMPL(pipe_overlong_path) {
-  char path[512];
   uv_pipe_t pipe;
   uv_connect_t req;
 
-  memset(path, '@', sizeof(path));
   ASSERT_OK(uv_pipe_init(uv_default_loop(), &pipe, 0));
+
+#ifndef _WIN32
+  char path[512];
+  memset(path, '@', sizeof(path));
   ASSERT_EQ(UV_EINVAL,
             uv_pipe_bind2(&pipe, path, sizeof(path), UV_PIPE_NO_TRUNCATE));
   ASSERT_EQ(UV_EINVAL,
@@ -170,8 +181,17 @@ TEST_IMPL(pipe_overlong_path) {
                              sizeof(path),
                              UV_PIPE_NO_TRUNCATE,
                              (uv_connect_cb) abort));
-  uv_close((uv_handle_t*) &pipe, NULL);
   ASSERT_OK(uv_run(uv_default_loop(), UV_RUN_DEFAULT));
+#endif
+
+  ASSERT_EQ(UV_EINVAL, uv_pipe_bind(&pipe, ""));
+  uv_pipe_connect(&req,
+                  &pipe,
+                  "",
+                  (uv_connect_cb) connect_overlong_cb);
+  ASSERT_OK(uv_run(uv_default_loop(), UV_RUN_DEFAULT));
+  ASSERT_EQ(1, connect_cb_called);
+  ASSERT_EQ(1, close_cb_called);
 
   MAKE_VALGRIND_HAPPY(uv_default_loop());
   return 0;
diff --git a/deps/uv/test/test-pipe-getsockname.c b/deps/uv/test/test-pipe-getsockname.c
index eb09d88fd2b3a5..d76b6ad4917021 100644
--- a/deps/uv/test/test-pipe-getsockname.c
+++ b/deps/uv/test/test-pipe-getsockname.c
@@ -60,8 +60,8 @@ static void pipe_client_connect_cb(uv_connect_t* req, int status) {
 
   if (*buf == '\0') {  /* Linux abstract socket. */
     const char expected[] = "\0" TEST_PIPENAME;
-    ASSERT_GE(len, sizeof(expected));
-    ASSERT_MEM_EQ(buf, expected, sizeof(expected));
+    ASSERT_EQ(len, sizeof(expected) - 1);
+    ASSERT_MEM_EQ(buf, expected, len);
   } else {
     ASSERT_NE(0, buf[len - 1]);
     ASSERT_MEM_EQ(buf, TEST_PIPENAME, len);
@@ -91,16 +91,24 @@ TEST_IMPL(pipe_getsockname) {
   RETURN_SKIP(NO_SELF_CONNECT);
 #endif
   uv_loop_t* loop;
+  char namebuf[256];
   char buf[1024];
+  size_t namelen;
   size_t len;
   int r;
 
+  snprintf(namebuf, sizeof(namebuf), "%s-oob", TEST_PIPENAME);
+  namelen = sizeof(TEST_PIPENAME) - 1;
+
   loop = uv_default_loop();
   ASSERT_NOT_NULL(loop);
 
   r = uv_pipe_init(loop, &pipe_server, 0);
   ASSERT_OK(r);
 
+  r = uv_pipe_bind2(&pipe_server, "bad\0path", 8, 0);
+  ASSERT_EQ(r, UV_EINVAL);
+
   len = sizeof buf;
   r = uv_pipe_getsockname(&pipe_server, buf, &len);
   ASSERT_EQ(r, UV_EBADF);
@@ -109,9 +117,13 @@ TEST_IMPL(pipe_getsockname) {
   r = uv_pipe_getpeername(&pipe_server, buf, &len);
   ASSERT_EQ(r, UV_EBADF);
 
-  r = uv_pipe_bind(&pipe_server, TEST_PIPENAME);
+  r = uv_pipe_bind2(&pipe_server, namebuf, namelen, 0);
   ASSERT_OK(r);
 
+#ifndef _WIN32
+  ASSERT_STR_EQ(pipe_server.pipe_fname, TEST_PIPENAME);
+#endif
+
   len = sizeof buf;
   r = uv_pipe_getsockname(&pipe_server, buf, &len);
   ASSERT_OK(r);
@@ -138,7 +150,13 @@ TEST_IMPL(pipe_getsockname) {
   r = uv_pipe_getpeername(&pipe_client, buf, &len);
   ASSERT_EQ(r, UV_EBADF);
 
-  uv_pipe_connect(&connect_req, &pipe_client, TEST_PIPENAME, pipe_client_connect_cb);
+  r = uv_pipe_connect2(&connect_req,
+                       &pipe_client,
+                       namebuf,
+                       namelen,
+                       0,
+                       pipe_client_connect_cb);
+  ASSERT_OK(r);
 
   len = sizeof buf;
   r = uv_pipe_getsockname(&pipe_client, buf, &len);
@@ -171,9 +189,10 @@ TEST_IMPL(pipe_getsockname_abstract) {
   buflen = sizeof(buf);
   memset(buf, 0, sizeof(buf));
   ASSERT_OK(uv_pipe_init(uv_default_loop(), &pipe_server, 0));
-  ASSERT_OK(uv_pipe_bind2(&pipe_server, name, sizeof(name), 0));
+  ASSERT_OK(uv_pipe_bind2(&pipe_server, name, sizeof(name) - 1, 0));
   ASSERT_OK(uv_pipe_getsockname(&pipe_server, buf, &buflen));
-  ASSERT_MEM_EQ(name, buf, sizeof(name));
+  ASSERT_UINT64_EQ(sizeof(name) - 1, buflen);
+  ASSERT_MEM_EQ(name, buf, buflen);
   ASSERT_OK(uv_listen((uv_stream_t*) &pipe_server,
                       0,
                       pipe_server_connection_cb));
@@ -181,7 +200,7 @@ TEST_IMPL(pipe_getsockname_abstract) {
   ASSERT_OK(uv_pipe_connect2(&connect_req,
                              &pipe_client,
                              name,
-                             sizeof(name),
+                             sizeof(name) - 1,
                              0,
                              pipe_client_connect_cb));
   ASSERT_OK(uv_run(uv_default_loop(), UV_RUN_DEFAULT));
diff --git a/deps/uv/test/test-poll.c b/deps/uv/test/test-poll.c
index f5a30e9a6b2499..fcd644f2c2563b 100644
--- a/deps/uv/test/test-poll.c
+++ b/deps/uv/test/test-poll.c
@@ -23,6 +23,7 @@
 
 #ifdef _WIN32
 # include <fcntl.h>
+# define close _close
 #else
 # include <sys/socket.h>
 # include <unistd.h>
@@ -638,9 +639,9 @@ TEST_IMPL(poll_bad_fdtype) {
   int fd;
 
 #if defined(_WIN32)
-  fd = open("test/fixtures/empty_file", O_RDONLY);
+  fd = _open("test/fixtures/empty_file", UV_FS_O_RDONLY);
 #else
-  fd = open(".", O_RDONLY);
+  fd = open(".", UV_FS_O_RDONLY);
 #endif
   ASSERT_NE(fd, -1);
   ASSERT_NE(0, uv_poll_init(uv_default_loop(), &poll_handle, fd));
diff --git a/deps/uv/test/test-spawn.c b/deps/uv/test/test-spawn.c
index bbb7cb498bacf2..6a848747036405 100644
--- a/deps/uv/test/test-spawn.c
+++ b/deps/uv/test/test-spawn.c
@@ -32,6 +32,9 @@
 # include <shellapi.h>
 # include <wchar.h>
   typedef BOOL (WINAPI *sCompareObjectHandles)(_In_ HANDLE, _In_ HANDLE);
+# define unlink _unlink
+# define putenv _putenv
+# define close _close
 #else
 # include <unistd.h>
 # include <sys/wait.h>
@@ -322,7 +325,7 @@ TEST_IMPL(spawn_stdout_to_file) {
 
   init_process_options("spawn_helper2", exit_cb);
 
-  r = uv_fs_open(NULL, &fs_req, "stdout_file", O_CREAT | O_RDWR,
+  r = uv_fs_open(NULL, &fs_req, "stdout_file", UV_FS_O_CREAT | UV_FS_O_RDWR,
       S_IRUSR | S_IWUSR, NULL);
   ASSERT_NE(r, -1);
   uv_fs_req_cleanup(&fs_req);
@@ -376,7 +379,7 @@ TEST_IMPL(spawn_stdout_and_stderr_to_file) {
 
   init_process_options("spawn_helper6", exit_cb);
 
-  r = uv_fs_open(NULL, &fs_req, "stdout_file", O_CREAT | O_RDWR,
+  r = uv_fs_open(NULL, &fs_req, "stdout_file", UV_FS_O_CREAT | UV_FS_O_RDWR,
       S_IRUSR | S_IWUSR, NULL);
   ASSERT_NE(r, -1);
   uv_fs_req_cleanup(&fs_req);
@@ -1394,6 +1397,67 @@ TEST_IMPL(spawn_no_path) {
   MAKE_VALGRIND_HAPPY(uv_default_loop());
   return 0;
 }
+
+
+TEST_IMPL(spawn_no_ext) {
+  char new_exepath[1024];
+
+  init_process_options("spawn_helper1", exit_cb);
+  options.flags |= UV_PROCESS_WINDOWS_FILE_PATH_EXACT_NAME;
+  snprintf(new_exepath, sizeof(new_exepath), "%.*s_no_ext",
+           (int) (exepath_size - sizeof(".exe") + 1),
+           exepath);
+  options.file = options.args[0] = new_exepath;
+
+  ASSERT_OK(uv_spawn(uv_default_loop(), &process, &options));
+  ASSERT_OK(uv_run(uv_default_loop(), UV_RUN_DEFAULT));
+
+  ASSERT_EQ(1, exit_cb_called);
+  ASSERT_EQ(1, close_cb_called);
+
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+
+
+TEST_IMPL(spawn_path_no_ext) {
+  int r;
+  int len;
+  int file_len;
+  char file[64];
+  char path[1024];
+  char* env[2];
+
+  /* Set up the process, but make sure that the file to run is relative and
+   * requires a lookup into PATH. */
+  init_process_options("spawn_helper1", exit_cb);
+  options.flags |= UV_PROCESS_WINDOWS_FILE_PATH_EXACT_NAME;
+
+  /* Set up the PATH env variable */
+  for (len = strlen(exepath), file_len = 0;
+       exepath[len - 1] != '/' && exepath[len - 1] != '\\';
+       len--, file_len++);
+  snprintf(file, sizeof(file), "%.*s_no_ext",
+           (int) (file_len - sizeof(".exe") + 1),
+           exepath + len);
+  exepath[len] = 0;
+  snprintf(path, sizeof(path), "PATH=%s", exepath);
+
+  env[0] = path;
+  env[1] = NULL;
+
+  options.file = options.args[0] = file;
+  options.env = env;
+
+  r = uv_spawn(uv_default_loop(), &process, &options);
+  ASSERT(r == UV_ENOENT || r == UV_EACCES);
+  ASSERT_OK(uv_is_active((uv_handle_t*) &process));
+  uv_close((uv_handle_t*) &process, NULL);
+  ASSERT_OK(uv_run(uv_default_loop(), UV_RUN_DEFAULT));
+
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
 #endif
 
 #ifndef _WIN32
@@ -1621,7 +1685,7 @@ TEST_IMPL(spawn_fs_open) {
   const char dev_null[] = "/dev/null";
 #endif
 
-  r = uv_fs_open(NULL, &fs_req, dev_null, O_RDWR, 0, NULL);
+  r = uv_fs_open(NULL, &fs_req, dev_null, UV_FS_O_RDWR, 0, NULL);
   ASSERT_NE(r, -1);
   fd = uv_get_osfhandle((uv_file) fs_req.result);
   uv_fs_req_cleanup(&fs_req);
diff --git a/deps/uv/test/test-tcp-connect6-error.c b/deps/uv/test/test-tcp-connect6-error.c
index 1e6d7c78da999d..dc2fce82f8958a 100644
--- a/deps/uv/test/test-tcp-connect6-error.c
+++ b/deps/uv/test/test-tcp-connect6-error.c
@@ -23,6 +23,7 @@
 #include "task.h"
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 
 
 static int connect_cb_called = 0;
@@ -75,9 +76,13 @@ TEST_IMPL(tcp_connect6_error_fault) {
 
 
 TEST_IMPL(tcp_connect6_link_local) {
+  uv_interface_address_t* ifs;
+  uv_interface_address_t* p;
   struct sockaddr_in6 addr;
   uv_connect_t req;
   uv_tcp_t server;
+  int ok;
+  int n;
 
   if (!can_ipv6())
     RETURN_SKIP("IPv6 not supported");
@@ -90,6 +95,18 @@ TEST_IMPL(tcp_connect6_link_local) {
   RETURN_SKIP("Test does not currently work in QEMU");
 #endif  /* defined(__QEMU__) */
 
+  /* Check there's an interface that routes link-local (fe80::/10) traffic. */
+  ASSERT_OK(uv_interface_addresses(&ifs, &n));
+  for (p = ifs; p < &ifs[n]; p++)
+    if (p->address.address6.sin6_family == AF_INET6)
+      if (!memcmp(&p->address.address6.sin6_addr, "\xfe\x80", 2))
+        break;
+  ok = (p < &ifs[n]);
+  uv_free_interface_addresses(ifs, n);
+
+  if (!ok)
+    RETURN_SKIP("IPv6 link-local traffic not supported");
+
   ASSERT_OK(uv_ip6_addr("fe80::0bad:babe", 1337, &addr));
   ASSERT_OK(uv_tcp_init(uv_default_loop(), &server));
 
diff --git a/deps/uv/test/test-tcp-write-in-a-row.c b/deps/uv/test/test-tcp-write-in-a-row.c
index 89304eb5a34999..5c17ed496138e1 100644
--- a/deps/uv/test/test-tcp-write-in-a-row.c
+++ b/deps/uv/test/test-tcp-write-in-a-row.c
@@ -114,8 +114,9 @@ static void start_server(void) {
 TEST_IMPL(tcp_write_in_a_row) {
 #if defined(_WIN32)
   RETURN_SKIP("tcp_write_in_a_row does not work on Windows");
+#elif defined(__PASE__)
+  RETURN_SKIP("tcp_write_in_a_row does not work on IBM i PASE");
 #else
-
   uv_connect_t connect_req;
   struct sockaddr_in addr;
 
diff --git a/deps/uv/test/test-tcp-writealot.c b/deps/uv/test/test-tcp-writealot.c
index ebafb1796327d3..fbfa498403c34e 100644
--- a/deps/uv/test/test-tcp-writealot.c
+++ b/deps/uv/test/test-tcp-writealot.c
@@ -149,8 +149,9 @@ TEST_IMPL(tcp_writealot) {
   uv_tcp_t client;
   int r;
 
-#ifdef __TSAN__
-  RETURN_SKIP("Test is too slow to run under ThreadSanitizer");
+#if defined(__MSAN__) || defined(__TSAN__)
+  RETURN_SKIP("Test is too slow to run under "
+              "MemorySanitizer or ThreadSanitizer");
 #endif
 
   ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
diff --git a/deps/uv/test/test-thread-priority.c b/deps/uv/test/test-thread-priority.c
new file mode 100644
index 00000000000000..0aaf297722b118
--- /dev/null
+++ b/deps/uv/test/test-thread-priority.c
@@ -0,0 +1,105 @@
+/* Copyright libuv contributors. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "uv.h"
+#include "task.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h> /* memset */
+
+#ifdef __POSIX__
+#include <pthread.h>
+#include <errno.h>
+#endif
+
+#ifdef _WIN32
+#include <windows.h>
+#else
+#include <unistd.h>
+#endif
+
+uv_sem_t sem;
+
+static void simple_task(void *args) {
+  uv_sem_wait(&sem);
+  printf("in simple_task\n");
+}
+
+TEST_IMPL(thread_priority) {
+  int priority;
+#ifndef _WIN32
+  int min;
+  int max;
+  int policy;
+  struct sched_param param;
+#endif
+  uv_thread_t task_id;
+
+  /* Verify that passing a NULL pointer returns UV_EINVAL. */
+  ASSERT_EQ(UV_EINVAL, uv_thread_getpriority(0, NULL));
+  ASSERT_OK(uv_sem_init(&sem, 1));
+  uv_sem_wait(&sem);
+  ASSERT_OK(uv_thread_create(&task_id, simple_task, NULL));
+  ASSERT_OK(uv_thread_getpriority(task_id, &priority));
+
+#ifdef _WIN32
+  ASSERT_EQ(priority, THREAD_PRIORITY_NORMAL);
+#else
+  ASSERT_OK(pthread_getschedparam(task_id, &policy, &param));
+#ifdef __PASE__
+  min = 1;
+  max = 127;
+#else
+  min = sched_get_priority_min(policy);
+  max = sched_get_priority_max(policy);
+#endif
+  ASSERT(priority >= min && priority <= max);
+#endif
+
+  ASSERT_OK(uv_thread_setpriority(task_id, UV_THREAD_PRIORITY_LOWEST));
+  ASSERT_OK(uv_thread_getpriority(task_id, &priority));
+
+#ifdef _WIN32
+  ASSERT_EQ(priority, THREAD_PRIORITY_LOWEST);
+#else
+  ASSERT_EQ(priority, min);
+#endif
+
+/**
+ * test set nice value for the calling thread with default schedule policy
+*/
+#ifdef __linux__
+  ASSERT_OK(uv_thread_getpriority(pthread_self(), &priority));
+  ASSERT_EQ(priority, 0);
+  ASSERT_OK(uv_thread_setpriority(pthread_self(), UV_THREAD_PRIORITY_LOWEST));
+  ASSERT_OK(uv_thread_getpriority(pthread_self(), &priority));
+  ASSERT_EQ(priority, (0 - UV_THREAD_PRIORITY_LOWEST * 2));
+#endif
+
+  uv_sem_post(&sem);
+
+  ASSERT_OK(uv_thread_join(&task_id));
+
+  uv_sem_destroy(&sem);
+
+  return 0;
+}
\ No newline at end of file
diff --git a/deps/uv/test/test-threadpool-cancel.c b/deps/uv/test/test-threadpool-cancel.c
index b758ac4f6b66ec..544fbbc348a159 100644
--- a/deps/uv/test/test-threadpool-cancel.c
+++ b/deps/uv/test/test-threadpool-cancel.c
@@ -22,6 +22,10 @@
 #include "uv.h"
 #include "task.h"
 
+#ifdef _WIN32
+# define putenv _putenv
+#endif
+
 #define INIT_CANCEL_INFO(ci, what)                                            \
   do {                                                                        \
     (ci)->reqs = (what);                                                      \
diff --git a/deps/uv/test/test-timer.c b/deps/uv/test/test-timer.c
index d889e707731886..641d3a90775a41 100644
--- a/deps/uv/test/test-timer.c
+++ b/deps/uv/test/test-timer.c
@@ -31,6 +31,7 @@ static int repeat_cb_called = 0;
 static int repeat_close_cb_called = 0;
 static int order_cb_called = 0;
 static int timer_check_double_call_called = 0;
+static int zero_timeout_cb_calls = 0;
 static uint64_t start_time;
 static uv_timer_t tiny_timer;
 static uv_timer_t huge_timer1;
@@ -242,6 +243,31 @@ TEST_IMPL(timer_order) {
 }
 
 
+static void zero_timeout_cb(uv_timer_t* handle) {
+  ASSERT_OK(uv_timer_start(handle, zero_timeout_cb, 0, 0));
+  uv_stop(handle->loop);
+  zero_timeout_cb_calls++;
+}
+
+
+TEST_IMPL(timer_zero_timeout) {
+  uv_timer_t timer;
+  uv_loop_t* loop;
+
+  loop = uv_default_loop();
+  ASSERT_OK(uv_timer_init(loop, &timer));
+  ASSERT_OK(uv_timer_start(&timer, zero_timeout_cb, 0, 0));
+  ASSERT_EQ(1, uv_run(loop, UV_RUN_DEFAULT));  /* because of uv_stop() */
+  ASSERT_EQ(1, zero_timeout_cb_calls);
+  uv_close((uv_handle_t*) &timer, NULL);
+  ASSERT_OK(uv_run(loop, UV_RUN_DEFAULT));
+  ASSERT_EQ(1, zero_timeout_cb_calls);
+
+  MAKE_VALGRIND_HAPPY(loop);
+  return 0;
+}
+
+
 static void tiny_timer_cb(uv_timer_t* handle) {
   ASSERT_PTR_EQ(handle, &tiny_timer);
   uv_close((uv_handle_t*) &tiny_timer, NULL);