containerd/signals_unix.go
Shengjing Zhu f0d5dd3c82 Use unix.SignalNum in ParseSignal on unix platform
This removes the signalMap on unix platform, since
the signalMap on different architectures is not same,
especially it's wrong on mipsx.

golang.org/x/sys/unix now has a SignalNum func to convert
signal name to a number, thus there's no need to keep
this redundant map.

Windows platform still needs to have a signalMap, since
golang.org/x/sys/windows doesn't have corresponding
functions.

Address: #3061

Signed-off-by: Shengjing Zhu <zhsj@debian.org>
2019-03-03 22:10:58 +08:00

48 lines
1.3 KiB
Go

// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
/*
Copyright The containerd Authors.
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 containerd
import (
"fmt"
"strconv"
"strings"
"syscall"
"golang.org/x/sys/unix"
)
// ParseSignal parses a given string into a syscall.Signal
// the rawSignal can be a string with "SIG" prefix,
// or a signal number in string format.
func ParseSignal(rawSignal string) (syscall.Signal, error) {
s, err := strconv.Atoi(rawSignal)
if err == nil {
signal := syscall.Signal(s)
if unix.SignalName(signal) != "" {
return signal, nil
}
return -1, fmt.Errorf("unknown signal %q", rawSignal)
}
signal := unix.SignalNum(strings.ToUpper(rawSignal))
if signal == 0 {
return -1, fmt.Errorf("unknown signal %q", rawSignal)
}
return signal, nil
}