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| 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 containerd |
| 18 | + |
| 19 | +import ( |
| 20 | + "fmt" |
| 21 | + "strconv" |
| 22 | + "strings" |
| 23 | + "syscall" |
| 24 | +) |
| 25 | + |
| 26 | +// ParseSignal parses a given string into a syscall.Signal |
| 27 | +// it checks that the signal exists in the platform-appropriate signalMap |
| 28 | +func ParseSignal(rawSignal string) (syscall.Signal, error) { |
| 29 | + s, err := strconv.Atoi(rawSignal) |
| 30 | + if err == nil { |
| 31 | + sig := syscall.Signal(s) |
| 32 | + for _, msig := range signalMap { |
| 33 | + if sig == msig { |
| 34 | + return sig, nil |
| 35 | + } |
| 36 | + } |
| 37 | + return -1, fmt.Errorf("unknown signal %q", rawSignal) |
| 38 | + } |
| 39 | + signal, ok := signalMap[strings.TrimPrefix(strings.ToUpper(rawSignal), "SIG")] |
| 40 | + if !ok { |
| 41 | + return -1, fmt.Errorf("unknown signal %q", rawSignal) |
| 42 | + } |
| 43 | + return signal, nil |
| 44 | +} |
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