From 2c82277b5e7ac7e43edefe60aaf6dfeaa36d620b Mon Sep 17 00:00:00 2001
From: Igor Pissolati <igo08an@hotmail.com>
Date: Thu, 23 Oct 2025 11:19:17 -0300
Subject: [PATCH] Add FileIdInformation file info class

---
 src/common/platform/file_management.hpp | 18 ++++++++++----
 src/windows-emulator/syscalls/file.cpp  | 32 +++++++++++++++++++++++++
 2 files changed, 45 insertions(+), 5 deletions(-)

diff --git a/src/common/platform/file_management.hpp b/src/common/platform/file_management.hpp
index 5c6d091e..0d8745e1 100644
--- a/src/common/platform/file_management.hpp
+++ b/src/common/platform/file_management.hpp
@@ -333,6 +333,19 @@ typedef struct _FILE_IS_REMOTE_DEVICE_INFORMATION
     BOOLEAN IsRemote;
 } FILE_IS_REMOTE_DEVICE_INFORMATION, *PFILE_IS_REMOTE_DEVICE_INFORMATION;
 
+#ifndef OS_WINDOWS
+typedef struct _FILE_ID_128
+{
+    BYTE Identifier[16];
+} FILE_ID_128, *PFILE_ID_128;
+#endif
+
+typedef struct _FILE_ID_INFORMATION
+{
+    ULONGLONG VolumeSerialNumber;
+    FILE_ID_128 FileId;
+} FILE_ID_INFORMATION, *PFILE_ID_INFORMATION;
+
 typedef struct _FILE_STANDARD_INFORMATION
 {
     LARGE_INTEGER AllocationSize;
@@ -426,11 +439,6 @@ typedef struct _FILE_RENAME_INFORMATION
 } FILE_RENAME_INFORMATION, *PFILE_RENAME_INFORMATION;
 
 #ifndef OS_WINDOWS
-typedef struct _FILE_ID_128
-{
-    BYTE Identifier[16];
-} FILE_ID_128, *PFILE_ID_128;
-
 typedef BOOLEAN SECURITY_CONTEXT_TRACKING_MODE, *PSECURITY_CONTEXT_TRACKING_MODE;
 typedef struct _SECURITY_QUALITY_OF_SERVICE
 {
diff --git a/src/windows-emulator/syscalls/file.cpp b/src/windows-emulator/syscalls/file.cpp
index 62fd7ff7..7c9a0199 100644
--- a/src/windows-emulator/syscalls/file.cpp
+++ b/src/windows-emulator/syscalls/file.cpp
@@ -571,6 +571,38 @@ namespace syscalls
             return ret(STATUS_SUCCESS);
         }
 
+        if (info_class == FileIdInformation)
+        {
+            if (!f->handle)
+            {
+                return ret(STATUS_NOT_SUPPORTED);
+            }
+
+            block.Information = sizeof(FILE_ID_INFORMATION);
+
+            if (length < block.Information)
+            {
+                return ret(STATUS_BUFFER_OVERFLOW);
+            }
+
+            struct _stat64 file_stat{};
+            if (fstat64(f->handle, &file_stat) != 0)
+            {
+                return ret(STATUS_INVALID_HANDLE);
+            }
+
+            const emulator_object<FILE_ID_INFORMATION> info{c.emu, file_information};
+            FILE_ID_INFORMATION i{};
+
+            i.VolumeSerialNumber = file_stat.st_dev;
+            memset(&i.FileId, 0, sizeof(i.FileId));
+            memcpy(&i.FileId.Identifier[0], &file_stat.st_ino, sizeof(file_stat.st_ino));
+
+            info.write(i);
+
+            return ret(STATUS_SUCCESS);
+        }
+
         if (info_class == FileAllInformation)
         {
             return ret(STATUS_NOT_SUPPORTED);