Nuke the sandbox

1 files changed, 0 insertions, 72 deletions

diff --git a/security/sandbox/linux/SandboxHooks.cpp b/security/sandbox/linux/SandboxHooks.cpp
deleted file mode 100644
index eaaf56982..000000000
--- a/security/sandbox/linux/SandboxHooks.cpp
+++ /dev/null
@@ -1,72 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim: set ts=8 sts=2 et sw=2 tw=80: */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this file,
- * You can obtain one at http://mozilla.org/MPL/2.0/. */
-#include <dlfcn.h>
-#include <signal.h>
-#include <errno.h>
-
-#include "mozilla/Types.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-
-// Signal number used to enable seccomp on each thread.
-extern int gSeccompTsyncBroadcastSignum;
-
-// This file defines a hook for sigprocmask() and pthread_sigmask().
-// Bug 1176099: some threads block SIGSYS signal which breaks our seccomp-bpf
-// sandbox. To avoid this, we intercept the call and remove SIGSYS.
-//
-// ENOSYS indicates an error within the hook function itself.
-static int HandleSigset(int (*aRealFunc)(int, const sigset_t*, sigset_t*),
-                        int aHow, const sigset_t* aSet,
-                        sigset_t* aOldSet, bool aUseErrno)
-{
-  if (!aRealFunc) {
-    if (aUseErrno) {
-      errno = ENOSYS;
-      return -1;
-    }
-
-    return ENOSYS;
-  }
-
-  // Avoid unnecessary work
-  if (aSet == NULL || aHow == SIG_UNBLOCK) {
-    return aRealFunc(aHow, aSet, aOldSet);
-  }
-
-  sigset_t newSet = *aSet;
-  if (sigdelset(&newSet, SIGSYS) != 0 ||
-     (gSeccompTsyncBroadcastSignum &&
-      sigdelset(&newSet, gSeccompTsyncBroadcastSignum) != 0)) {
-    if (aUseErrno) {
-      errno = ENOSYS;
-      return -1;
-    }
-
-    return ENOSYS;
-  }
-
-  return aRealFunc(aHow, &newSet, aOldSet);
-}
-
-extern "C" MOZ_EXPORT int
-sigprocmask(int how, const sigset_t* set, sigset_t* oldset)
-{
-  static auto sRealFunc = (int (*)(int, const sigset_t*, sigset_t*))
-    dlsym(RTLD_NEXT, "sigprocmask");
-
-  return HandleSigset(sRealFunc, how, set, oldset, true);
-}
-
-extern "C" MOZ_EXPORT int
-pthread_sigmask(int how, const sigset_t* set, sigset_t* oldset)
-{
-  static auto sRealFunc = (int (*)(int, const sigset_t*, sigset_t*))
-    dlsym(RTLD_NEXT, "pthread_sigmask");
-
-  return HandleSigset(sRealFunc, how, set, oldset, false);
-}