github.com/lalkh/containerd@v1.4.3/signals_unix.go (about)

     1  // +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
     2  
     3  /*
     4     Copyright The containerd Authors.
     5  
     6     Licensed under the Apache License, Version 2.0 (the "License");
     7     you may not use this file except in compliance with the License.
     8     You may obtain a copy of the License at
     9  
    10         http://www.apache.org/licenses/LICENSE-2.0
    11  
    12     Unless required by applicable law or agreed to in writing, software
    13     distributed under the License is distributed on an "AS IS" BASIS,
    14     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    15     See the License for the specific language governing permissions and
    16     limitations under the License.
    17  */
    18  
    19  package containerd
    20  
    21  import (
    22  	"fmt"
    23  	"strconv"
    24  	"strings"
    25  	"syscall"
    26  
    27  	"golang.org/x/sys/unix"
    28  )
    29  
    30  // ParseSignal parses a given string into a syscall.Signal
    31  // the rawSignal can be a string with "SIG" prefix,
    32  // or a signal number in string format.
    33  func ParseSignal(rawSignal string) (syscall.Signal, error) {
    34  	s, err := strconv.Atoi(rawSignal)
    35  	if err == nil {
    36  		return syscall.Signal(s), nil
    37  	}
    38  	signal := unix.SignalNum(strings.ToUpper(rawSignal))
    39  	if signal == 0 {
    40  		return -1, fmt.Errorf("unknown signal %q", rawSignal)
    41  	}
    42  	return signal, nil
    43  }