github.com/ttpreport/gvisor-ligolo@v0.0.0-20240123134145-a858404967ba/pkg/sentry/platform/ptrace/subprocess_linux_unsafe.go (about)

     1  // Copyright 2018 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 linux && (amd64 || arm64)
    16  // +build linux
    17  // +build amd64 arm64
    18  
    19  package ptrace
    20  
    21  import (
    22  	"unsafe"
    23  
    24  	"github.com/ttpreport/gvisor-ligolo/pkg/abi/linux"
    25  	"golang.org/x/sys/unix"
    26  )
    27  
    28  // unmaskAllSignals unmasks all signals on the current thread.
    29  //
    30  //go:norace
    31  //go:nosplit
    32  func unmaskAllSignals() unix.Errno {
    33  	var set linux.SignalSet
    34  	_, _, errno := unix.RawSyscall6(unix.SYS_RT_SIGPROCMASK, linux.SIG_SETMASK, uintptr(unsafe.Pointer(&set)), 0, linux.SignalSetSize, 0, 0)
    35  	return errno
    36  }