// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef SANDBOX_LINUX_SECCOMP_BPF_HELPERS_SIGSYS_HANDLERS_H_
#define SANDBOX_LINUX_SECCOMP_BPF_HELPERS_SIGSYS_HANDLERS_H_
#include "base/basictypes.h"
#include "build/build_config.h"
#include "sandbox/linux/sandbox_export.h"
// The handlers are suitable for use in Trap() error codes. They are
// guaranteed to be async-signal safe.
// See sandbox/linux/seccomp-bpf/trap.h to see how they work.
namespace sandbox {
struct arch_seccomp_data;
// This handler will crash the currently running process. The crashing address
// will be the number of the current system call, extracted from |args|.
// This handler will also print to stderr the number of the crashing syscall.
SANDBOX_EXPORT intptr_t
CrashSIGSYS_Handler(const struct arch_seccomp_data& args, void* aux);
// The following three handlers are suitable to report failures with the
// clone(), prctl() and ioctl() system calls respectively.
// The crashing address will be (clone_flags & 0xFFFFFF), where clone_flags is
// the clone(2) argument, extracted from |args|.
SANDBOX_EXPORT intptr_t
SIGSYSCloneFailure(const struct arch_seccomp_data& args, void* aux);
// The crashing address will be (option & 0xFFF), where option is the prctl(2)
// argument.
SANDBOX_EXPORT intptr_t
SIGSYSPrctlFailure(const struct arch_seccomp_data& args, void* aux);
// The crashing address will be request & 0xFFFF, where request is the ioctl(2)
// argument.
SANDBOX_EXPORT intptr_t
SIGSYSIoctlFailure(const struct arch_seccomp_data& args, void* aux);
} // namespace sandbox.
#endif // SANDBOX_LINUX_SECCOMP_BPF_HELPERS_SIGSYS_HANDLERS_H_