Windows: fix uv_fs_ftruncate to compile with Mingw32

Close: #382, #397 Ref: #381
joyent · Apr 29, 2012 · d13b1e0 · d13b1e0
1 parent b386c44
commit d13b1e0
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Showing 2 changed files with 23 additions and 3 deletions.
diff --git a/src/win/fs.c b/src/win/fs.c
@@ -573,12 +573,28 @@ void fs__fsync(uv_fs_t* req, uv_file file) {
 
 
 void fs__ftruncate(uv_fs_t* req, uv_file file, int64_t offset) {
-  int result;
+  HANDLE handle;
+  NTSTATUS status;
+  IO_STATUS_BLOCK io_status;
+  FILE_END_OF_FILE_INFORMATION eof_info;
 
   VERIFY_UV_FILE(file, req);
 
-  result = _chsize_s(file, offset);
-  SET_REQ_RESULT(req, result);
+  handle = (HANDLE)_get_osfhandle(file);
+
+  eof_info.EndOfFile.QuadPart = offset;
+
+  status = pNtSetInformationFile(handle,
+                                 &io_status,
+                                 &eof_info,
+                                 sizeof eof_info,
+                                 FileEndOfFileInformation);
+
+  if (NT_SUCCESS(status)) {
+    SET_REQ_RESULT(req, 0);
+  } else {
+    SET_REQ_WIN32_ERROR(req, pRtlNtStatusToDosError(status));
+  }
 }
 
 

diff --git a/src/win/winapi.h b/src/win/winapi.h
@@ -4141,6 +4141,10 @@ typedef struct _FILE_MODE_INFORMATION {
   ULONG Mode;
 } FILE_MODE_INFORMATION, *PFILE_MODE_INFORMATION;
 
+typedef struct _FILE_END_OF_FILE_INFORMATION {
+  LARGE_INTEGER  EndOfFile;
+} FILE_END_OF_FILE_INFORMATION, *PFILE_END_OF_FILE_INFORMATION;
+
 #define FILE_SYNCHRONOUS_IO_ALERT               0x00000010
 #define FILE_SYNCHRONOUS_IO_NONALERT            0x00000020