[PATCH 1/2] ntdll: NtQuerySystemInformation() implement SystemBootEnvironmentInformation

[Dāvis Mosāns]

From: Dāvis Mosāns

Co-authored-by: Daniel Clark 
Co-authored-by: Haltinulo
---
 dlls/ntdll/unix/system.c | 29 +++++++++++++++++++++++++++++
 include/winternl.h       | 11 +++++++++++
 2 files changed, 40 insertions(+)

diff --git a/dlls/ntdll/unix/system.c b/dlls/ntdll/unix/system.c
index 879a5893758..52d27c7c472 100644
--- a/dlls/ntdll/unix/system.c
+++ b/dlls/ntdll/unix/system.c
@@ -3261,6 +3261,35 @@ NTSTATUS WINAPI NtQuerySystemInformation( SYSTEM_INFORMATION_CLASS class,
     case SystemCpuSetInformation:  /* 175 */
         return NtQuerySystemInformationEx(class, NULL, 0, info, size, ret_size);

+    case SystemBootEnvironmentInformation:
+    {
+        PSYSTEM_BOOT_ENVIRONMENT_INFORMATION result;
+
+        len = sizeof(SYSTEM_BOOT_ENVIRONMENT_INFORMATION);
+        if (size >= sizeof(SYSTEM_BOOT_ENVIRONMENT_V1))
+        {
+            if (!info) ret = STATUS_ACCESS_VIOLATION;
+            else
+            {
+                result = (PSYSTEM_BOOT_ENVIRONMENT_INFORMATION)info;
+                get_system_uuid(&result->BootIdentifier);
+
+                if (access("/sys/firmware/efi", F_OK) == 0)
+                {
+                    result->FirmwareType = FirmwareTypeUefi;
+                } else
+                {
+                    result->FirmwareType = FirmwareTypeBios;
+                }
+
+                if (size >= len) result->BootFlags = 0;
+                else len = sizeof(SYSTEM_BOOT_ENVIRONMENT_V1);
+            }
+        }
+        else ret = STATUS_INFO_LENGTH_MISMATCH;
+        break;
+    }
+
     /* Wine extensions */

case SystemWineVersionInformation:  /* 1000 */
diff --git a/include/winternl.h b/include/winternl.h
index b551e404fc9..917988a69dd 100644
--- a/include/winternl.h
+++ b/include/winternl.h
@@ -2644,6 +2644,17 @@ typedef struct _SYSTEM_CPU_INFORMATION {
     ULONG  ProcessorFeatureBits;
 } SYSTEM_CPU_INFORMATION, *PSYSTEM_CPU_INFORMATION;

+typedef struct _SYSTEM_BOOT_ENVIRONMENT_V1 {
+  GUID BootIdentifier;
+  FIRMWARE_TYPE FirmwareType;
+} SYSTEM_BOOT_ENVIRONMENT_V1, *PSYSTEM_BOOT_ENVIRONMENT_V1;
+
+typedef struct _SYSTEM_BOOT_ENVIRONMENT_INFORMATION {
+  GUID BootIdentifier;
+  FIRMWARE_TYPE FirmwareType;
+  ULONGLONG BootFlags;
+} SYSTEM_BOOT_ENVIRONMENT_INFORMATION, *PSYSTEM_BOOT_ENVIRONMENT_INFORMATION;
+
 /* definitions of bits in the Feature set for the x86 processors */
 #define CPU_FEATURE_VME    0x00000005   /* Virtual 86 Mode Extensions */
 #define CPU_FEATURE_TSC    0x00000002   /* Time Stamp Counter available */