[PATCH] Cygwin: console: Fix a problem that minor ID is incorrect in ConEmu.

[Takashi Yano <takashi.yano@nifty.ne.jp>]

Previously, minor device number of console was not assigned correctly
in ConEmu environment. This is because console window of ConEmu is
not enumerated by EnumWindows(). This patch fixes the issue.

Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
---
 winsup/cygwin/autoload.cc         |  2 ++
 winsup/cygwin/devices.cc          |  7 +++++++
 winsup/cygwin/devices.in          |  7 +++++++
 winsup/cygwin/fhandler/console.cc | 14 ++++++++++++++
 4 files changed, 30 insertions(+)

diff --git a/winsup/cygwin/autoload.cc b/winsup/cygwin/autoload.cc
index 7e610bdd0..65e906e8b 100644
--- a/winsup/cygwin/autoload.cc
+++ b/winsup/cygwin/autoload.cc
@@ -548,7 +548,9 @@ LoadDLLfunc (DefWindowProcW, user32)
 LoadDLLfunc (DestroyWindow, user32)
 LoadDLLfunc (DispatchMessageW, user32)
 LoadDLLfunc (EmptyClipboard, user32)
+LoadDLLfunc (EnumChildWindows, user32)
 LoadDLLfunc (EnumWindows, user32)
+LoadDLLfunc (GetClassNameA, user32)
 LoadDLLfunc (GetClipboardData, user32)
 LoadDLLfunc (GetDC, user32)
 LoadDLLfunc (GetForegroundWindow, user32)
diff --git a/winsup/cygwin/devices.cc b/winsup/cygwin/devices.cc
index 167b0e4b4..ca1fdf3be 100644
--- a/winsup/cygwin/devices.cc
+++ b/winsup/cygwin/devices.cc
@@ -81,6 +81,13 @@ enum_cons_dev (HWND hw, LPARAM lp)
       UnmapViewOfFile ((void *) cs);
       CloseHandle (h);
     }
+  else
+    { /* Only for ConEmu */
+      char class_hw[32];
+      if (19 == GetClassName (hw, class_hw, sizeof (class_hw))
+	  && 0 == strcmp (class_hw, "VirtualConsoleClass"))
+	EnumChildWindows (hw, enum_cons_dev, lp);
+    }
   return TRUE;
 }
 
diff --git a/winsup/cygwin/devices.in b/winsup/cygwin/devices.in
index 48d3843fe..842f09c18 100644
--- a/winsup/cygwin/devices.in
+++ b/winsup/cygwin/devices.in
@@ -77,6 +77,13 @@ enum_cons_dev (HWND hw, LPARAM lp)
       UnmapViewOfFile ((void *) cs);
       CloseHandle (h);
     }
+  else
+    { /* Only for ConEmu */
+      char class_hw[32];
+      if (19 == GetClassName (hw, class_hw, sizeof (class_hw))
+	  && 0 == strcmp (class_hw, "VirtualConsoleClass"))
+	EnumChildWindows (hw, enum_cons_dev, lp);
+    }
   return TRUE;
 }
 
diff --git a/winsup/cygwin/fhandler/console.cc b/winsup/cygwin/fhandler/console.cc
index b0907eb31..70824e694 100644
--- a/winsup/cygwin/fhandler/console.cc
+++ b/winsup/cygwin/fhandler/console.cc
@@ -250,6 +250,13 @@ enum_windows (HWND hw, LPARAM lp)
       UnmapViewOfFile ((void *) cs);
       CloseHandle (h);
     }
+  else
+    { /* Only for ConEmu */
+      char class_hw[32];
+      if (19 == GetClassName (hw, class_hw, sizeof (class_hw))
+	  && 0 == strcmp (class_hw, "VirtualConsoleClass"))
+	EnumChildWindows (hw, enum_windows, lp);
+    }
   return TRUE;
 }
 
@@ -656,6 +663,13 @@ scan_console (HWND hw, LPARAM lp)
       UnmapViewOfFile ((void *) cs);
       CloseHandle (h);
     }
+  else
+    { /* Only for ConEmu */
+      char class_hw[32];
+      if (19 == GetClassName (hw, class_hw, sizeof (class_hw))
+	  && 0 == strcmp (class_hw, "VirtualConsoleClass"))
+	EnumChildWindows (hw, scan_console, lp);
+    }
   return TRUE;
 }
 
-- 
2.43.0