github.com/lalkh/containerd@v1.4.3/sys/reaper/reaper_utils_linux.go (about)

     1  /*
     2     Copyright The containerd Authors.
     3  
     4     Licensed under the Apache License, Version 2.0 (the "License");
     5     you may not use this file except in compliance with the License.
     6     You may obtain a copy of the License at
     7  
     8         http://www.apache.org/licenses/LICENSE-2.0
     9  
    10     Unless required by applicable law or agreed to in writing, software
    11     distributed under the License is distributed on an "AS IS" BASIS,
    12     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13     See the License for the specific language governing permissions and
    14     limitations under the License.
    15  */
    16  
    17  package reaper
    18  
    19  import (
    20  	"unsafe"
    21  
    22  	"golang.org/x/sys/unix"
    23  )
    24  
    25  // SetSubreaper sets the value i as the subreaper setting for the calling process
    26  func SetSubreaper(i int) error {
    27  	return unix.Prctl(unix.PR_SET_CHILD_SUBREAPER, uintptr(i), 0, 0, 0)
    28  }
    29  
    30  // GetSubreaper returns the subreaper setting for the calling process
    31  func GetSubreaper() (int, error) {
    32  	var i uintptr
    33  
    34  	if err := unix.Prctl(unix.PR_GET_CHILD_SUBREAPER, uintptr(unsafe.Pointer(&i)), 0, 0, 0); err != nil {
    35  		return -1, err
    36  	}
    37  
    38  	return int(i), nil
    39  }