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