Alistair Leslie-Hughes : mountmgr.sys: Don't attempt to read from invalid media.

[Alexandre Julliard]

Module: wine
Branch: stable
Commit: bccf125524a01ddb32e34fd981426f325abc18e6
URL:    https://gitlab.winehq.org/wine/wine/-/commit/bccf125524a01ddb32e34fd981426f3...

Author: Alistair Leslie-Hughes <leslie_alistair(a)hotmail.com>
Date:   Thu Jan 19 12:49:28 2023 +1100

mountmgr.sys: Don't attempt to read from invalid media.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=49615
(cherry picked from commit 90d50bc611b71688287d0ddf28c5babcb8e84e98)

---

 dlls/mountmgr.sys/device.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/dlls/mountmgr.sys/device.c b/dlls/mountmgr.sys/device.c
index 22c17025e87..33ce1f248e5 100644
--- a/dlls/mountmgr.sys/device.c
+++ b/dlls/mountmgr.sys/device.c
@@ -899,6 +899,14 @@ static BOOL get_volume_device_info( struct volume *volume )
     }
     else
     {
+        if(GetLastError() == ERROR_NOT_READY)
+        {
+            TRACE( "%s: removable drive with no inserted media\n", debugstr_a(unix_device) );
+            volume->fs_type = FS_UNKNOWN;
+            CloseHandle( handle );
+            return TRUE;
+        }
+
         volume->fs_type = VOLUME_ReadFATSuperblock( handle, superblock );
         if (volume->fs_type == FS_UNKNOWN) volume->fs_type = VOLUME_ReadCDSuperblock( handle, superblock );
     }