github.com/ttpreport/gvisor-ligolo@v0.0.0-20240123134145-a858404967ba/pkg/sentry/syscalls/linux/sys_clone_arm64.go (about)

     1  // Copyright 2020 The gVisor Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  //go:build arm64
    16  // +build arm64
    17  
    18  package linux
    19  
    20  import (
    21  	"github.com/ttpreport/gvisor-ligolo/pkg/sentry/arch"
    22  	"github.com/ttpreport/gvisor-ligolo/pkg/sentry/kernel"
    23  )
    24  
    25  // Clone implements linux syscall clone(2).
    26  // sys_clone has so many flavors, and we implement the default one in linux 3.11
    27  // arm64(kernel/fork.c with CONFIG_CLONE_BACKWARDS defined in the config file):
    28  //
    29  //	sys_clone(clone_flags, newsp, parent_tidptr, tls_val, child_tidptr)
    30  func Clone(t *kernel.Task, sysno uintptr, args arch.SyscallArguments) (uintptr, *kernel.SyscallControl, error) {
    31  	flags := int(args[0].Int())
    32  	stack := args[1].Pointer()
    33  	parentTID := args[2].Pointer()
    34  	tls := args[3].Pointer()
    35  	childTID := args[4].Pointer()
    36  	return clone(t, flags, stack, parentTID, childTID, tls)
    37  }