[PATCH v2 2/2] mountmgr.sys: Do not add drive letters or volumes for macOS volumes without mount paths.

[Tim Clem]

From: Tim Clem

Mounted volumes that are not represented in the filesystem are system
volumes that we should ignore (e.g. recovery and preboot).
---
 dlls/mountmgr.sys/diskarb.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/dlls/mountmgr.sys/diskarb.c b/dlls/mountmgr.sys/diskarb.c
index 63986c3df93..d33f6c60afb 100644
--- a/dlls/mountmgr.sys/diskarb.c
+++ b/dlls/mountmgr.sys/diskarb.c
@@ -91,9 +91,12 @@ static void appeared_callback( DADiskRef disk, void *context )
     if ((volume_url = CFDictionaryGetValue( dict, CFSTR("DAVolumePath") )))
         CFURLGetFileSystemRepresentation( volume_url, true, (UInt8 *)mount_point, sizeof(mount_point) );
     else
-        mount_point[0] = 0;
+    {
+        TRACE( "ignoring volume %s, uuid %s: no macOS volume path\n", device, wine_dbgstr_guid(guid_ptr) );
+        goto done;
+    }

-    if (volume_url && CFURLCopyResourcePropertyForKey( volume_url, kCFURLVolumeIsBrowsableKey, &ref, NULL ))
+    if (CFURLCopyResourcePropertyForKey( volume_url, kCFURLVolumeIsBrowsableKey, &ref, NULL ))
     {
         Boolean is_browsable = CFBooleanGetValue( ref );
         CFRelease( ref );