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-rw-r--r--security/sandbox/linux/SandboxInfo.h81
1 files changed, 0 insertions, 81 deletions
diff --git a/security/sandbox/linux/SandboxInfo.h b/security/sandbox/linux/SandboxInfo.h
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index 1999ac392..000000000
--- a/security/sandbox/linux/SandboxInfo.h
+++ /dev/null
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-/* -*- 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/. */
-
-#ifndef mozilla_SandboxInfo_h
-#define mozilla_SandboxInfo_h
-
-#include "mozilla/Types.h"
-
-// Information on what parts of sandboxing are enabled in this build
-// and/or supported by the system.
-
-namespace mozilla {
-
-class SandboxInfo {
-public:
- // No need to prevent copying; this is essentially just a const int.
- SandboxInfo(const SandboxInfo& aOther) : mFlags(aOther.mFlags) { }
-
- // Flags are checked at initializer time; this returns them.
- static const SandboxInfo& Get() { return sSingleton; }
-
- enum Flags {
- // System call filtering; kernel config option CONFIG_SECCOMP_FILTER.
- kHasSeccompBPF = 1 << 0,
- // Config flag MOZ_CONTENT_SANDBOX; env var MOZ_DISABLE_CONTENT_SANDBOX.
- kEnabledForContent = 1 << 1,
- // Config flag MOZ_GMP_SANDBOX; env var MOZ_DISABLE_GMP_SANDBOX.
- kEnabledForMedia = 1 << 2,
- // Env var MOZ_SANDBOX_VERBOSE.
- kVerbose = 1 << 3,
- // Kernel can atomically set system call filtering on entire thread group.
- kHasSeccompTSync = 1 << 4,
- // Can this process create user namespaces? (Man page user_namespaces(7).)
- kHasUserNamespaces = 1 << 5,
- // Could a more privileged process have user namespaces, even if we can't?
- kHasPrivilegedUserNamespaces = 1 << 6,
- // Env var MOZ_PERMISSIVE_CONTENT_SANDBOX
- kPermissive = 1 << 7,
- // Something is creating threads when we need to still be single-threaded.
- kUnexpectedThreads = 1 << 8,
- };
-
- bool Test(Flags aFlag) const { return (mFlags & aFlag) == aFlag; }
-
- // Returns true if SetContentProcessSandbox may be called.
- bool CanSandboxContent() const
- {
- return !Test(kEnabledForContent) || Test(kHasSeccompBPF);
- }
-
- // Returns true if SetMediaPluginSandbox may be called.
- bool CanSandboxMedia() const
- {
- return !Test(kEnabledForMedia) || Test(kHasSeccompBPF);
- }
-
- // For telemetry / crash annotation uses.
- uint32_t AsInteger() const {
- return mFlags;
- }
-
- // For bug 1222500 or anything else like it: On desktop, this is
- // called in the parent process at a point when it should still be
- // single-threaded, to check that the SandboxEarlyInit() call in a
- // child process is early enough to be single-threaded. If not,
- // kUnexpectedThreads is set and affected flags (user namespaces;
- // possibly others in the future) are cleared.
- static MOZ_EXPORT void ThreadingCheck();
-private:
- enum Flags mFlags;
- // This should be const, but has to allow for ThreadingCheck.
- static MOZ_EXPORT SandboxInfo sSingleton;
- SandboxInfo();
-};
-
-} // namespace mozilla
-
-#endif // mozilla_SandboxInfo_h