--- chrome/browser/download/download_prefs.cc.orig	2022-10-05 07:34:01 UTC
+++ chrome/browser/download/download_prefs.cc
@@ -13,6 +13,7 @@
 #include "base/callback_helpers.h"
 #include "base/check.h"
 #include "base/cxx17_backports.h"
+#include "base/command_line.h"
 #include "base/feature_list.h"
 #include "base/files/file_util.h"
 #include "base/no_destructor.h"
@@ -61,6 +62,10 @@
 #include "chrome/browser/ui/pdf/adobe_reader_info_win.h"
 #endif
 
+#if BUILDFLAG(IS_OPENBSD)
+#include "sandbox/policy/openbsd/sandbox_openbsd.h"
+#endif
+
 using content::BrowserContext;
 using content::BrowserThread;
 using content::DownloadManager;
@@ -71,7 +76,7 @@ namespace {
 // Consider downloads 'dangerous' if they go to the home directory on Linux and
 // to the desktop on any platform.
 bool DownloadPathIsDangerous(const base::FilePath& download_path) {
-#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
+#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_BSD)
   base::FilePath home_dir = base::GetHomeDir();
   if (download_path == home_dir) {
     return true;
@@ -182,7 +187,7 @@ DownloadPrefs::DownloadPrefs(Profile* profile) : profi
 #endif  // BUILDFLAG(IS_CHROMEOS_ASH)
 
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || \
-    BUILDFLAG(IS_MAC)
+    BUILDFLAG(IS_MAC) || BUILDFLAG(IS_BSD)
   should_open_pdf_in_system_reader_ =
       prefs->GetBoolean(prefs::kOpenPdfDownloadInSystemReader);
 #endif
@@ -302,7 +307,7 @@ void DownloadPrefs::RegisterProfilePrefs(
   registry->RegisterTimePref(prefs::kDownloadLastCompleteTime,
                              /*default_value=*/base::Time());
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || \
-    BUILDFLAG(IS_MAC)
+    BUILDFLAG(IS_MAC) || BUILDFLAG(IS_BSD)
   registry->RegisterBooleanPref(prefs::kOpenPdfDownloadInSystemReader, false);
 #endif
 #if BUILDFLAG(IS_ANDROID)
@@ -483,7 +488,7 @@ void DownloadPrefs::DisableAutoOpenByUserBasedOnExtens
 }
 
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || \
-    BUILDFLAG(IS_MAC)
+    BUILDFLAG(IS_MAC) || BUILDFLAG(IS_BSD)
 void DownloadPrefs::SetShouldOpenPdfInSystemReader(bool should_open) {
   if (should_open_pdf_in_system_reader_ == should_open)
     return;
@@ -515,7 +520,7 @@ bool DownloadPrefs::ShouldOpenPdfInSystemReader() cons
 
 void DownloadPrefs::ResetAutoOpenByUser() {
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || \
-    BUILDFLAG(IS_MAC)
+    BUILDFLAG(IS_MAC) || BUILDFLAG(IS_BSD)
   SetShouldOpenPdfInSystemReader(false);
 #endif
   auto_open_by_user_.clear();
@@ -546,7 +551,7 @@ void DownloadPrefs::SaveAutoOpenState() {
 bool DownloadPrefs::CanPlatformEnableAutoOpenForPdf() const {
 #if BUILDFLAG(IS_CHROMEOS)
   return false;  // There is no UI for auto-open on ChromeOS.
-#elif BUILDFLAG(IS_WIN) || BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_MAC)
+#elif BUILDFLAG(IS_WIN) || BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_BSD)
   return ShouldOpenPdfInSystemReader();
 #else
   return false;
@@ -670,7 +675,14 @@ base::FilePath DownloadPrefs::SanitizeDownloadTargetPa
 #else
   // If the stored download directory is an absolute path, we presume it's
   // correct; there's not really much more validation we can do here.
+#if BUILDFLAG(IS_OPENBSD)
+  // If unveil(2) is used, force the file dialog directory to something we
+  // know is available.
+  auto* sandbox = sandbox::policy::SandboxLinux::GetInstance();
+  if (!sandbox->unveil_initialized() && path.IsAbsolute())
+#else
   if (path.IsAbsolute())
+#endif
     return path;
 
   // When the default download directory is *not* an absolute path, we use the