tor-browser

commit 597ff721069b65e46c26c0cf059f5cdb36255751
parent 7a067618e9b94f6303e65dc7a2505fca48106a30
Author: Robin Steuber <bytesized@mozilla.com>
Date:   Thu,  9 Oct 2025 23:58:23 +0000

Bug 1984458 - Add test utilities for `update.status` I/O failures r=cdupuis,nrishel

Differential Revision: https://phabricator.services.mozilla.com/D247858

Diffstat:
M
toolkit/mozapps/update/tests/moz.build
 | 
3
+++
A
toolkit/mozapps/update/tests/test_file_change_mtime.cpp
 | 
65
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
A
toolkit/mozapps/update/tests/test_file_hold_open.cpp
 | 
53
+++++++++++++++++++++++++++++++++++++++++++++++++++++

3 files changed, 121 insertions(+), 0 deletions(-)
diff --git a/toolkit/mozapps/update/tests/moz.build b/toolkit/mozapps/update/tests/moz.build
@@ -34,6 +34,9 @@ SimplePrograms(
     ]
 )
 
+if CONFIG["OS_ARCH"] == "WINNT":
+    SimplePrograms(["test_file_change_mtime", "test_file_hold_open"])
+
 LOCAL_INCLUDES += [
     "/toolkit/mozapps/update",
     "/toolkit/mozapps/update/common",
diff --git a/toolkit/mozapps/update/tests/test_file_change_mtime.cpp b/toolkit/mozapps/update/tests/test_file_change_mtime.cpp
@@ -0,0 +1,65 @@
+#include <windows.h>
+#include <iostream>
+#include <string>
+
+void usage(int argc, wchar_t** argv) {
+  std::wcout << L"Usage:\n"
+             << L"  " << argv[0] << L" filename age\n\n"
+             << L"    filename\n"
+             << L"      The path of the file to change.\n"
+             << L"    age\n"
+             << L"      The number of seconds in the past to set the file's \n"
+             << L"      modification time to.\n\n";
+}
+
+static const ULONGLONG FILETIME_TICKS_PER_SECOND = 10'000'000;
+
+static ULARGE_INTEGER secondsAgoTimestamp(ULONGLONG secondsAgo) {
+  FILETIME now{};
+  GetSystemTimeAsFileTime(&now);
+  ULARGE_INTEGER systemTime;
+  systemTime.LowPart = now.dwLowDateTime;
+  systemTime.HighPart = now.dwHighDateTime;
+  systemTime.QuadPart -= secondsAgo * FILETIME_TICKS_PER_SECOND;
+  return systemTime;
+}
+
+int wmain(int argc, wchar_t** argv) {
+  HANDLE handle;
+  FILE_BASIC_INFO fileBasicInfo{};
+  long ageInSeconds;
+  if (argc != 3) {
+    usage(argc, argv);
+    return 1;
+  }
+  if (!swscanf(argv[2], L"%lu", &ageInSeconds)) {
+    std::wcout << "Invalid seconds: " << argv[2] << std::endl;
+    return 2;
+  }
+  if ((handle = CreateFileW(argv[1], GENERIC_WRITE, 0, nullptr, OPEN_ALWAYS,
+                            FILE_ATTRIBUTE_NORMAL, nullptr)) ==
+      INVALID_HANDLE_VALUE) {
+    std::wcout << "Error opening file: " << argv[1] << ", " << GetLastError()
+               << std::endl;
+    return 3;
+  }
+  if (!GetFileInformationByHandleEx(handle, FileBasicInfo, &fileBasicInfo,
+                                    sizeof(fileBasicInfo))) {
+    std::wcout << "Error getting file info: " << GetLastError() << std::endl;
+    return 4;
+  }
+
+  ULARGE_INTEGER desiredTimestamp = secondsAgoTimestamp(ageInSeconds);
+  fileBasicInfo.LastWriteTime.QuadPart = desiredTimestamp.QuadPart;
+
+  if (!SetFileInformationByHandle(handle, FileBasicInfo, &fileBasicInfo,
+                                  sizeof(fileBasicInfo))) {
+    std::wcout << "Error setting file mtime: " << GetLastError() << std::endl;
+    return 5;
+  }
+  if (!CloseHandle(handle)) {
+    std::wcout << "Error closing handle: " << GetLastError() << std::endl;
+    return 6;
+  }
+  return 0;
+}
diff --git a/toolkit/mozapps/update/tests/test_file_hold_open.cpp b/toolkit/mozapps/update/tests/test_file_hold_open.cpp
@@ -0,0 +1,53 @@
+#include <windows.h>
+#include <iostream>
+#include <string>
+
+// Opens a file and holds it open until the caller sends input.
+// Then it closes the file and exits.
+
+void usage(int argc, wchar_t** argv) {
+  std::wcout << L"Usage:\n"
+             << L"  " << argv[0] << L" filename [sharing]\n\n"
+             << L"    filename\n"
+             << L"      The path of the file to hold open.\n"
+             << L"    sharing\n"
+             << L"      File sharing flags. 'r', 'w', and/or 'd' can be\n"
+             << L"      specified. Defaults to no sharing.\n\n";
+}
+
+int wmain(int argc, wchar_t** argv) {
+  DWORD dwShareMode = 0;
+
+  if (argc < 2 || argc > 3) {
+    usage(argc, argv);
+    exit(1);
+  }
+  if (argc >= 3) {
+    for (wchar_t* curr = argv[2]; *curr; ++curr) {
+      switch (*curr) {
+        case L'w':
+          dwShareMode |= FILE_SHARE_WRITE;
+          break;
+        case L'r':
+          dwShareMode |= FILE_SHARE_READ;
+          break;
+        case L'd':
+          dwShareMode |= FILE_SHARE_DELETE;
+          break;
+        default:
+          usage(argc, argv);
+          return 1;
+      }
+    }
+  }
+  HANDLE handle = CreateFileW(argv[1], GENERIC_READ, dwShareMode, nullptr,
+                              OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, nullptr);
+  if (handle == INVALID_HANDLE_VALUE) {
+    std::wcout << L"failed to open file " << argv[1] << std::endl;
+    return 1;
+  }
+  std::wcout << "Locked" << std::endl;
+  (void)std::wcin.get();
+  CloseHandle(handle);
+  return 0;
+}