[PATCH] ntdll: Don't translate Unix virtual disks to FILE_DEVICE_VIRTUAL_DISK.

[Zebediah Figura]

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=36546
Signed-off-by: Zebediah Figura <z.figura12(a)gmail.com>
---
Despite my sign-off, I don't profess to hold an opinion on whether this bug
should be solved, but multiple users have requested this behaviour, and it
seems not wholly unreasonable. I'm submitting this patch so that the question
at least doesn't languish on bugzilla forever.

This patch was tested with FutureMark's SystemInfo version 4.28; it refuses to
install in a WINEPREFIX in tmpfs without this patch, and succeeds with it.

 dlls/ntdll/unix/file.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/dlls/ntdll/unix/file.c b/dlls/ntdll/unix/file.c
index a0ad361fcbb..a28cfe9818f 100644
--- a/dlls/ntdll/unix/file.c
+++ b/dlls/ntdll/unix/file.c
@@ -6001,12 +6001,15 @@ static NTSTATUS get_device_info( int fd, FILE_FS_DEVICE_INFORMATION *info )
             info->DeviceType = FILE_DEVICE_NETWORK_FILE_SYSTEM;
             info->Characteristics |= FILE_REMOTE_DEVICE;
             break;
-        case 0x01021994:  /* tmpfs */
-        case 0x28cd3d45:  /* cramfs */
         case 0x1373:      /* devfs */
         case 0x9fa0:      /* procfs */
             info->DeviceType = FILE_DEVICE_VIRTUAL_DISK;
             break;
+        case 0x01021994:  /* tmpfs */
+        case 0x28cd3d45:  /* cramfs */
+            /* Don't map these to FILE_DEVICE_VIRTUAL_DISK by default. Virtual
+             * filesystems are rare on Windows, and some programs refuse to
+             * recognize them as valid. */
         default:
             info->DeviceType = FILE_DEVICE_DISK_FILE_SYSTEM;
             break;
@@ -6050,8 +6053,9 @@ static NTSTATUS get_device_info( int fd, FILE_FS_DEVICE_INFORMATION *info )
                 info->Characteristics |= FILE_REMOVABLE_MEDIA;
                 break;
             case DKC_MD:
-                info->DeviceType = FILE_DEVICE_VIRTUAL_DISK;
-                break;
+            /* Don't map these to FILE_DEVICE_VIRTUAL_DISK by default. Virtual
+             * filesystems are rare on Windows, and some programs refuse to
+             * recognize them as valid. */
             default:
                 info->DeviceType = FILE_DEVICE_DISK_FILE_SYSTEM;
             }
-- 
2.27.0