| // Copyright 2018 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <lib/fzl/vmar-manager.h> |
| |
| #include <utility> |
| |
| #include <fbl/alloc_checker.h> |
| |
| namespace fzl { |
| |
| fbl::RefPtr<VmarManager> VmarManager::Create(size_t size, fbl::RefPtr<VmarManager> parent, |
| zx_vm_option_t options) { |
| if (!size || (parent && !parent->vmar().is_valid())) { |
| return nullptr; |
| } |
| |
| fbl::AllocChecker ac; |
| fbl::RefPtr<VmarManager> ret = fbl::AdoptRef(new (&ac) VmarManager()); |
| |
| if (!ac.check()) { |
| return nullptr; |
| } |
| |
| zx_status_t res; |
| zx_handle_t p = parent ? parent->vmar().get() : zx::vmar::root_self()->get(); |
| uintptr_t child_addr; |
| |
| res = zx_vmar_allocate(p, options, 0, size, ret->vmar_.reset_and_get_address(), &child_addr); |
| if (res != ZX_OK) { |
| return nullptr; |
| } |
| |
| ret->parent_ = std::move(parent); |
| ret->start_ = reinterpret_cast<void*>(child_addr); |
| ret->size_ = size; |
| |
| return ret; |
| } |
| |
| } // namespace fzl |