mirror of
https://github.com/apple/container.git
synced 2026-07-12 20:47:04 +00:00
Kathryn Baldauf
d6f052d206
## Motivation and Context
Now that we're in 2026, we need to update the license headers on all the
files. Unfortunately, Hawkeye doesn't have an attribute for the current
year to help us avoid this in the future. Instead, I had to work around
this by doing the following:
1. Update licenserc.toml with:
```
[properties]
... (other properties)
currentYear = "2026"
```
2. Update scripts/license-header.txt with
```
Copyright ©{{ " " }}{%- set created = attrs.git_file_created_year or
attrs.disk_file_created_year -%}{%- set modified = props["currentYear"]
-%}{%- if created != modified -%} {{created}}-{{modified}}{%- else
-%}{{created}}{%- endif -%}{{ " " }}{{ props["copyrightOwner"] }}.
```
Then I removed these two changes before committing. After this PR is
merged, all files will have recently had git updates, so the existing
code for setting the modified year should work as intended.
Signed-off-by: Kathryn Baldauf <k_baldauf@apple.com>
62 lines
2.3 KiB
Swift
62 lines
2.3 KiB
Swift
//===----------------------------------------------------------------------===//
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// Copyright © 2025-2026 Apple Inc. and the container project authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//===----------------------------------------------------------------------===//
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import ContainerizationOS
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// For a lot of programs, they don't install their own signal handlers for
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// SIGINT/SIGTERM which poses a somewhat fun problem for containers. Because
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// they're pid 1 (doesn't matter that it isn't in the "root" pid namespace)
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// the default actions for SIGINT and SIGTERM now are nops. So this type gives
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// us an opportunity to set a threshold for a certain number of signals received
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// so we can have an escape hatch for users to escape their horrific mistake
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// of cat'ing /dev/urandom by exit(1)'ing :)
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public struct SignalThreshold {
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private let threshold: Int
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private let signals: [Int32]
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private var t: Task<(), Never>?
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public init(
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threshold: Int,
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signals: [Int32],
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) {
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self.threshold = threshold
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self.signals = signals
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}
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// Start kicks off the signal watching. The passed in handler will
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// run only once upon passing the threshold number passed in the constructor.
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mutating public func start(handler: @Sendable @escaping () -> Void) {
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let signals = self.signals
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let threshold = self.threshold
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self.t = Task {
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var received = 0
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let signalHandler = AsyncSignalHandler.create(notify: signals)
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for await _ in signalHandler.signals {
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received += 1
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if received == threshold {
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handler()
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signalHandler.cancel()
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return
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}
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}
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}
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}
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public func stop() {
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self.t?.cancel()
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}
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}
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