update libuv to 855764406e

fixes #2521

deps/uv/src/win/fs.c

@@ -490,38 +490,69 @@ void fs__readdir(uv_fs_t* req, const wchar_t* path, int flags) {
 
 
 void fs__stat(uv_fs_t* req, const wchar_t* path) {
+  HANDLE file;
+  WIN32_FIND_DATAW ent;
   int result;
-  unsigned short mode;
 
-  fs__open(req, path, _O_RDONLY, 0);
-  if (req->result == -1) {
+  req->ptr = NULL;
+
+  file = FindFirstFileExW(path, FindExInfoStandard, &ent,
+    FindExSearchNameMatch, NULL, 0);
+
+  if (file == INVALID_HANDLE_VALUE) {
+    SET_REQ_RESULT_WIN32_ERROR(req, GetLastError());
     return;
   }
 
-  result = _fstati64(req->result, &req->stat);
-  if (result == -1) {
-    req->ptr = NULL;
-  } else {
+  FindClose(file);
 
-    /*
-     * VC CRT doesn't properly set S_IFDIR in _fstati64,
-     * so we set it here if path is a directory.
-     */
-    if (GetFileAttributesW(path) & FILE_ATTRIBUTE_DIRECTORY) {
-      mode = req->stat.st_mode;
-      mode &= ~_S_IFMT;
-      mode |= _S_IFDIR;
-
-      req->stat.st_mode = mode;
-      assert((req->stat.st_mode & _S_IFMT) == _S_IFDIR);
+  if (ent.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT &&
+      ent.dwReserved0 == IO_REPARSE_TAG_SYMLINK) {
+    fs__open(req, path, _O_RDONLY, 0);
+    if (req->result != -1) {
+      result = _fstati64(req->result, &req->stat);
+      _close(req->result);
+
+      if (result != -1) {
+        req->ptr = &req->stat;
+      }
+    
+      SET_REQ_RESULT(req, result);
     }
 
-    req->ptr = &req->stat;
+    return;
   }
 
-  _close(req->result);
+  req->stat.st_ino = 0;
+  req->stat.st_uid = 0;
+  req->stat.st_gid = 0;
+  req->stat.st_mode = 0;
+  req->stat.st_rdev = 0;
+  req->stat.st_dev = 0;
+  req->stat.st_nlink = 1;
 
-  SET_REQ_RESULT(req, result);
+  if (ent.dwFileAttributes & FILE_ATTRIBUTE_READONLY ) {
+    req->stat.st_mode |= (_S_IREAD + (_S_IREAD >> 3) + (_S_IREAD >> 6));
+  } else {
+    req->stat.st_mode |= ((_S_IREAD|_S_IWRITE) + ((_S_IREAD|_S_IWRITE) >> 3) +
+      ((_S_IREAD|_S_IWRITE) >> 6));
+  }
+
+  if (ent.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
+    req->stat.st_mode |= _S_IFDIR;
+  } else {
+    req->stat.st_mode |= _S_IFREG;
+  }
+
+  uv_filetime_to_time_t(&ent.ftLastWriteTime, &(req->stat.st_mtime));
+  uv_filetime_to_time_t(&ent.ftLastAccessTime, &(req->stat.st_atime));
+  uv_filetime_to_time_t(&ent.ftCreationTime, &(req->stat.st_ctime));
+
+  req->stat.st_size = ((int64_t)ent.nFileSizeHigh << 32) +
+    (int64_t)ent.nFileSizeLow;
+
+  req->ptr = &req->stat;
+  req->result = 0;
 }
 
 
@@ -1543,3 +1574,4 @@ void uv_fs_req_cleanup(uv_fs_t* req) {
 
   req->flags |= UV_FS_CLEANEDUP;
 }
+

deps/uv/src/win/internal.h

@@ -284,10 +284,8 @@ void uv_fs_event_endgame(uv_loop_t* loop, uv_fs_event_t* handle);
 
 /* Utils */
 int uv_parent_pid();
-
-
+void uv_filetime_to_time_t(FILETIME* file_time,  time_t* stat_time);
 void uv_fatal_error(const int errorno, const char* syscall);
-
 uv_err_code uv_translate_sys_error(int sys_errno);
 
 #define SET_REQ_STATUS(req, status)                                     \

deps/uv/src/win/util.c

@@ -23,6 +23,7 @@
 #include <direct.h>
 #include <malloc.h>
 #include <string.h>
+#include <time.h>
 
 #include "uv.h"
 #include "internal.h"
@@ -236,3 +237,25 @@ int uv_parent_pid() {
   CloseHandle(handle);
   return parent_pid;
 }
+
+
+void uv_filetime_to_time_t(FILETIME* file_time, time_t* stat_time) {
+  FILETIME local_time;
+  SYSTEMTIME system_time;
+  struct tm time;
+
+  if ((file_time->dwLowDateTime || file_time->dwHighDateTime) &&
+      FileTimeToLocalFileTime(file_time, &local_time)         &&
+      FileTimeToSystemTime(&local_time, &system_time)) {
+    time.tm_year = system_time.wYear - 1900;
+    time.tm_mon = system_time.wMonth - 1;
+    time.tm_mday = system_time.wDay;
+    time.tm_hour = system_time.wHour;
+    time.tm_min = system_time.wMinute;
+    time.tm_sec = system_time.wSecond;
+
+    *stat_time = mktime(&time);
+  } else {
+    *stat_time = 0;
+  }
+}