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// Copyright 2017 syzkaller project authors. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
// This file is shared between executor and csource package.
#include <zircon/process.h>
#include <zircon/syscalls.h>
#define doexit exit
#include "common.h"
#if defined(SYZ_EXECUTOR) || defined(SYZ_HANDLE_SEGV)
static void install_segv_handler()
{
struct sigaction sa;
memset(&sa, 0, sizeof(sa));
sa.sa_sigaction = segv_handler;
sa.sa_flags = SA_NODEFER | SA_SIGINFO;
sigaction(SIGSEGV, &sa, NULL);
sigaction(SIGBUS, &sa, NULL);
}
#endif
#if defined(SYZ_EXECUTOR) || defined(SYZ_FAULT_INJECTION)
static int inject_fault(int nth)
{
return 0;
}
static int fault_injected(int fail_fd)
{
return 0;
}
#endif
#if defined(SYZ_EXECUTOR) || defined(__NR_syz_mmap)
long syz_mmap(size_t addr, size_t size)
{
zx_handle_t mapping = 0;
uintptr_t res = 0;
uintptr_t offset = 16 << 20;
zx_status_t status = zx_vmar_allocate(zx_vmar_root_self(), addr - offset, size,
ZX_VM_FLAG_SPECIFIC | ZX_VM_FLAG_CAN_MAP_READ | ZX_VM_FLAG_CAN_MAP_WRITE,
&mapping, &res);
if (addr != res)
error("zx_vmar_allocate allocated wrong address: %p, want %p", (void*)res, (void*)addr);
return status;
}
#endif
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