41 lines
1.3 KiB
Go
41 lines
1.3 KiB
Go
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/*
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*------------------------------------------------------------------
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* Copyright (c) 2020 Cisco and/or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*------------------------------------------------------------------
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*/
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package memif
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import (
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"fmt"
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"os"
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"syscall"
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"unsafe"
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)
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// memfdCreate returns memory file file descriptor (memif.sys_memfd_create)
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func memfdCreate() (mfd int, err error) {
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p0, err := syscall.BytePtrFromString("memif_region_0")
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if err != nil {
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return -1, fmt.Errorf("memfdCreate: %s", err)
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}
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u_mfd, _, errno := syscall.Syscall(sys_memfd_create, uintptr(unsafe.Pointer(p0)), uintptr(mfd_allow_sealing), uintptr(0))
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if errno != 0 {
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return -1, fmt.Errorf("memfdCreate: %s", os.NewSyscallError("memfd_create", errno))
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}
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return int(u_mfd), nil
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}
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