From 9539fea16e0d8d07faf7edf50d480e0a80c4ccfc Mon Sep 17 00:00:00 2001 From: nsfisis Date: Tue, 11 Aug 2026 12:19:31 +0900 Subject: feat(signal): abort on SIGINT, SIGTERM and SIGHUP at checkpoints The SignalHandler port was a no-op stub, so all four of Composer's abort paths were dead code: nothing removed a half-created project, reverted composer.json, or cleaned up half-installed packages. Composer runs those handlers from pcntl callbacks, which a Rust signal handler cannot do -- it may touch nothing beyond atomics. SignalSubscription records the signal instead, and the abort runs from checkpoints on the normal call stack, where the clean-up can borrow the state it needs. That also resolves the closure-capture TODO(phase-c)s in RequireCommand and InstallationManager, and replaces exit_with_last_signal's exit(0) with the restore-and-re-raise Seld\Signal does. A subscription is live only inside the four abort regions, so elsewhere the signals keep their default disposition and kill the process at once. It is installed without SA_RESTART so a signal interrupts an interactive prompt rather than resuming the read. A signal reaches only the innermost subscription, reproducing SignalHandler's single-stack dispatch. Drop SignalRegistry, SignalableCommandInterface and the Application wiring for them: nothing in Composer reaches that path, and SignalHandler discards whatever they register. Signal handling from plugins and scripts is undefined behavior; see docs/dev/signals.md. Co-Authored-By: Claude Opus 5 (1M context) --- crates/shirabe-seld-signal/LICENSE | 19 ------------------- 1 file changed, 19 deletions(-) delete mode 100644 crates/shirabe-seld-signal/LICENSE (limited to 'crates/shirabe-seld-signal/LICENSE') diff --git a/crates/shirabe-seld-signal/LICENSE b/crates/shirabe-seld-signal/LICENSE deleted file mode 100644 index c1b62a35..00000000 --- a/crates/shirabe-seld-signal/LICENSE +++ /dev/null @@ -1,19 +0,0 @@ -Copyright (c) 2015 Jordi Boggiano - -Permission is hereby granted, free of charge, to any person obtaining a copy -of this software and associated documentation files (the "Software"), to deal -in the Software without restriction, including without limitation the rights -to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -copies of the Software, and to permit persons to whom the Software is furnished -to do so, subject to the following conditions: - -The above copyright notice and this permission notice shall be included in all -copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -THE SOFTWARE. -- cgit v1.3.1-4-g156e