[PATCH v8 4/7] ntoskrnl: Store DEVPKEY_Device_Siblings on each child after bus enumeration.

[Robert Gerigk]

From: Robert Gerigk <[e-mail]>

After enumerating child devices via IRP_MN_QUERY_DEVICE_RELATIONS,
store the list of sibling device instance IDs (all other children of
the same parent) as DEVPKEY_Device_Siblings on each child device.

Signed-off-by: Jan Robert Gerigk <[e-mail]>
---
 dlls/ntoskrnl.exe/pnp.c | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/dlls/ntoskrnl.exe/pnp.c b/dlls/ntoskrnl.exe/pnp.c
index 25707ed9eb1..5096b646b58 100644
--- a/dlls/ntoskrnl.exe/pnp.c
+++ b/dlls/ntoskrnl.exe/pnp.c
@@ -598,6 +598,44 @@ static void handle_bus_relations( DEVICE_OBJECT *parent )
         free( child_ids );
     }
 
+    {
+        WCHAR (*child_ids)[MAX_DEVICE_ID_LEN] = malloc( relations->Count * sizeof(*child_ids) );
+        DWORD count = relations->Count;
+
+        for (i = 0; i < count; ++i)
+            get_device_instance_id( relations->Objects[i], child_ids[i] );
+
+        for (i = 0; i < count; ++i)
+        {
+            SP_DEVINFO_DATA child_sp = {sizeof(child_sp)};
+            if (SetupDiOpenDeviceInfoW( set, child_ids[i], NULL, 0, &child_sp ))
+            {
+                DWORD sib_len = 1, j;
+                WCHAR *siblings_multi, *p;
+
+                for (j = 0; j < count; ++j)
+                    if (j != i) sib_len += wcslen( child_ids[j] ) + 1;
+
+                siblings_multi = malloc( sib_len * sizeof(WCHAR) );
+                p = siblings_multi;
+                for (j = 0; j < count; ++j)
+                {
+                    if (j != i)
+                    {
+                        wcscpy( p, child_ids[j] );
+                        p += wcslen( child_ids[j] ) + 1;
+                    }
+                }
+                *p = 0;
+                SetupDiSetDevicePropertyW( set, &child_sp, &DEVPKEY_Device_Siblings,
+                        DEVPROP_TYPE_STRING_LIST, (BYTE *)siblings_multi,
+                        sib_len * sizeof(WCHAR), 0 );
+                free( siblings_multi );
+            }
+        }
+        free( child_ids );
+    }
+
     SetupDiDestroyDeviceInfoList( set );
 }
 
-- 
GitLab


https://gitlab.winehq.org/wine/wine/-/merge_requests/10604