[v5 1/2] ntdll: Implement FileIdInformation class support in NtQueryInformationFile.

[Jonathan Doron]

Signed-off-by: Jonathan Doron <jond at wizery.com>
---
 dlls/ntdll/file.c       | 29 ++++++++++++++++++++++++-
 dlls/ntdll/tests/file.c | 56 +++++++++++++++++++++++++++++++++++++++++++++++++
 include/winternl.h      |  9 ++++++++
 3 files changed, 93 insertions(+), 1 deletion(-)

diff --git a/dlls/ntdll/file.c b/dlls/ntdll/file.c
index a6c1098..182db56 100644
--- a/dlls/ntdll/file.c
+++ b/dlls/ntdll/file.c
@@ -2377,7 +2377,7 @@ NTSTATUS WINAPI NtQueryInformationFile( HANDLE hFile, PIO_STATUS_BLOCK io,
         0,                                             /* FileRenameInformationBypassAccessCheck */
         0,                                             /* FileLinkInformationBypassAccessCheck */
         0,                                             /* FileVolumeNameInformation */
-        0,                                             /* FileIdInformation */
+        sizeof(FILE_ID_INFORMATION),                   /* FileIdInformation */
         0,                                             /* FileIdExtdDirectoryInformation */
         0,                                             /* FileReplaceCompletionInformation */
         0,                                             /* FileHardLinkFullIdInformation */
@@ -2619,6 +2619,33 @@ NTSTATUS WINAPI NtQueryInformationFile( HANDLE hFile, PIO_STATUS_BLOCK io,
             }
         }
         break;
+    case FileIdInformation:
+        {
+            if (fstat(fd, &st) == -1)
+            {
+                io->u.Status = FILE_GetNtStatus();
+            }
+            else
+            {
+                FILE_ID_INFORMATION *info = ptr;
+#if defined(HAVE_FSTATFS)
+                struct statfs volstats;
+                if (fstatfs(fd, &volstats) == -1)
+                {
+                    io->u.Status = FILE_GetNtStatus();
+                    break;
+                }
+
+                memcpy(&info->VolumeSerialNumber,
+                       &volstats.f_fsid,
+                       min(sizeof(info->VolumeSerialNumber), sizeof(volstats.f_fsid)));
+#else
+                memset(&info->VolumeSerialNumber, 0, sizeof(info->VolumeSerialNumber));
+#endif
+                ((LARGE_INTEGER *)&info->FileId)->QuadPart = st.st_ino;
+            }
+        }
+        break;
     default:
         FIXME("Unsupported class (%d)\n", class);
         io->u.Status = STATUS_NOT_IMPLEMENTED;
diff --git a/dlls/ntdll/tests/file.c b/dlls/ntdll/tests/file.c
index 57d7df9..926b8f8 100644
--- a/dlls/ntdll/tests/file.c
+++ b/dlls/ntdll/tests/file.c
@@ -1444,6 +1444,61 @@ static void test_file_basic_information(void)
     CloseHandle( h );
 }
 
+static void test_file_id_information(void)
+{
+    IO_STATUS_BLOCK io;
+    FILE_ID_INFORMATION fid1, fid2;
+    HANDLE h = INVALID_HANDLE_VALUE;
+    NTSTATUS res;
+    char path[MAX_PATH], buffer[MAX_PATH];
+
+    GetTempPathA(MAX_PATH, path);
+    GetTempFileNameA(path, "foo", 0, buffer);
+
+    h = CreateFileA(buffer, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
+    ok(h != INVALID_HANDLE_VALUE, "CreateFile error %d\n", GetLastError());
+
+    /* Query the temp file unique id */
+    memset(&fid1, 0, sizeof(fid1));
+    res = pNtQueryInformationFile(h, &io, &fid1, sizeof(fid1), FileIdInformation);
+    if (res == STATUS_NOT_IMPLEMENTED || res == STATUS_INVALID_INFO_CLASS)
+    {
+        CloseHandle(h);
+        DeleteFileA(buffer);
+        win_skip("FileIdInformation not supported\n");
+        return;
+    }
+
+    ok(res == STATUS_SUCCESS, "can't get fid1, res %x\n", res);
+
+    CloseHandle(h);
+
+    h = CreateFileA(buffer, GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
+    ok(h != INVALID_HANDLE_VALUE, "CreateFile error %d\n", GetLastError());
+
+    memset(&fid2, 0, sizeof(fid2));
+    res = pNtQueryInformationFile(h, &io, &fid2, sizeof(fid2), FileIdInformation);
+    ok(res == STATUS_SUCCESS, "can't get fid2, res %x\n", res);
+
+    /* Verify we got the same unique id for the file */
+    ok(memcmp(&fid1, &fid2, sizeof(fid1)) == 0, "file id is not unique\n");
+
+    CloseHandle(h);
+
+    h = create_temp_file(0);
+    ok(h != NULL, "error creating new file %d\n", GetLastError());
+
+    memset(&fid2, 0, sizeof(fid2));
+    res = pNtQueryInformationFile(h, &io, &fid2, sizeof(fid2), FileIdInformation);
+    ok(res == STATUS_SUCCESS, "can't get new fid2, res %x\n", res);
+
+    /* Verify we got the different unique id for the new file */
+    ok(memcmp(&fid1, &fid2, sizeof(fid1)) != 0, "file id is not unique\n");
+
+    CloseHandle(h);
+    DeleteFileA(buffer);
+}
+
 static void test_file_all_information(void)
 {
     IO_STATUS_BLOCK io;
@@ -4262,4 +4317,5 @@ START_TEST(file)
     test_file_disposition_information();
     test_query_volume_information_file();
     test_query_attribute_information_file();
+    test_file_id_information();
 }
diff --git a/include/winternl.h b/include/winternl.h
index 891b6a7..2f2ea86 100644
--- a/include/winternl.h
+++ b/include/winternl.h
@@ -571,6 +571,15 @@ typedef struct _FILE_INTERNAL_INFORMATION {
     LARGE_INTEGER IndexNumber;
 } FILE_INTERNAL_INFORMATION, *PFILE_INTERNAL_INFORMATION;
 
+typedef struct _FILE_ID_128 {
+    UCHAR Identifier[16];
+} FILE_ID_128, *PFILE_ID_128;
+
+typedef struct _FILE_ID_INFORMATION {
+    ULONGLONG VolumeSerialNumber;
+    FILE_ID_128 FileId;
+} FILE_ID_INFORMATION, *PFILE_ID_INFORMATION;
+
 typedef struct _FILE_EA_INFORMATION {
     ULONG EaSize;
 } FILE_EA_INFORMATION, *PFILE_EA_INFORMATION;
-- 
2.9.3